drivers/net/ethernet/intel/i40e/i40e_main.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
   3
   4 #include <linux/etherdevice.h>
   5 #include <linux/of_net.h>
   6 #include <linux/pci.h>
   7 #include <linux/bpf.h>
   8 #include <generated/utsrelease.h>
   9
  10 /* Local includes */
  11 #include "i40e.h"
  12 #include "i40e_diag.h"
  13 #include "i40e_xsk.h"
  14 #include <net/udp_tunnel.h>
  15 #include <net/xdp_sock_drv.h>
  16 /* All i40e tracepoints are defined by the include below, which
  17  * must be included exactly once across the whole kernel with
  18  * CREATE_TRACE_POINTS defined
  19  */
  20 #define CREATE_TRACE_POINTS
  21 #include "i40e_trace.h"
  22
  23 const char i40e_driver_name[] = "i40e";
  24 static const char i40e_driver_string[] =
  25                         "Intel(R) Ethernet Connection XL710 Network Driver";
  26
  27 static const char i40e_copyright[] = "Copyright (c) 2013 - 2019 Intel Corporation.";
  28
  29 /* a bit of forward declarations */
  30 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  31 static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired);
  32 static int i40e_add_vsi(struct i40e_vsi *vsi);
  33 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  34 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  35 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  36 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  37 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  38 static void i40e_prep_for_reset(struct i40e_pf *pf, bool lock_acquired);
  39 static int i40e_reset(struct i40e_pf *pf);
  40 static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired);
  41 static int i40e_setup_misc_vector_for_recovery_mode(struct i40e_pf *pf);
  42 static int i40e_restore_interrupt_scheme(struct i40e_pf *pf);
  43 static bool i40e_check_recovery_mode(struct i40e_pf *pf);
  44 static int i40e_init_recovery_mode(struct i40e_pf *pf, struct i40e_hw *hw);
  45 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  46 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  47 static int i40e_get_capabilities(struct i40e_pf *pf,
  48                                  enum i40e_admin_queue_opc list_type);
  49 static bool i40e_is_total_port_shutdown_enabled(struct i40e_pf *pf);
  50
  51 /* i40e_pci_tbl - PCI Device ID Table
  52  *
  53  * Last entry must be all 0s
  54  *
  55  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  56  *   Class, Class Mask, private data (not used) }
  57  */
  58 static const struct pci_device_id i40e_pci_tbl[] = {
  59         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  60         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  61         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  62         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  63         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  64         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  65         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  66         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  67         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  68         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_BC), 0},
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_SFP), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_B), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_X710_N3000), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_XXV710_N3000), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_B), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_SFP28), 0},
  83         /* required last entry */
  84         {0, }
  85 };
  86 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  87
  88 #define I40E_MAX_VF_COUNT 128
  89 static int debug = -1;
  90 module_param(debug, uint, 0);
  91 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all), Debug mask (0x8XXXXXXX)");
  92
  93 MODULE_AUTHOR("Intel Corporation, <[email protected]>");
  94 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  95 MODULE_LICENSE("GPL v2");
  96
  97 static struct workqueue_struct *i40e_wq;
  98
  99 /**
 100  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 101  * @hw:   pointer to the HW structure
 102  * @mem:  ptr to mem struct to fill out
 103  * @size: size of memory requested
 104  * @alignment: what to align the allocation to
 105  **/
 106 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 107                             u64 size, u32 alignment)
 108 {
 109         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 110
 111         mem->size = ALIGN(size, alignment);
 112         mem->va = dma_alloc_coherent(&pf->pdev->dev, mem->size, &mem->pa,
 113                                      GFP_KERNEL);
 114         if (!mem->va)
 115                 return -ENOMEM;
 116
 117         return 0;
 118 }
 119
 120 /**
 121  * i40e_free_dma_mem_d - OS specific memory free for shared code
 122  * @hw:   pointer to the HW structure
 123  * @mem:  ptr to mem struct to free
 124  **/
 125 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 126 {
 127         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 128
 129         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 130         mem->va = NULL;
 131         mem->pa = 0;
 132         mem->size = 0;
 133
 134         return 0;
 135 }
 136
 137 /**
 138  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 139  * @hw:   pointer to the HW structure
 140  * @mem:  ptr to mem struct to fill out
 141  * @size: size of memory requested
 142  **/
 143 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 144                              u32 size)
 145 {
 146         mem->size = size;
 147         mem->va = kzalloc(size, GFP_KERNEL);
 148
 149         if (!mem->va)
 150                 return -ENOMEM;
 151
 152         return 0;
 153 }
 154
 155 /**
 156  * i40e_free_virt_mem_d - OS specific memory free for shared code
 157  * @hw:   pointer to the HW structure
 158  * @mem:  ptr to mem struct to free
 159  **/
 160 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 161 {
 162         /* it's ok to kfree a NULL pointer */
 163         kfree(mem->va);
 164         mem->va = NULL;
 165         mem->size = 0;
 166
 167         return 0;
 168 }
 169
 170 /**
 171  * i40e_get_lump - find a lump of free generic resource
 172  * @pf: board private structure
 173  * @pile: the pile of resource to search
 174  * @needed: the number of items needed
 175  * @id: an owner id to stick on the items assigned
 176  *
 177  * Returns the base item index of the lump, or negative for error
 178  *
 179  * The search_hint trick and lack of advanced fit-finding only work
 180  * because we're highly likely to have all the same size lump requests.
 181  * Linear search time and any fragmentation should be minimal.
 182  **/
 183 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 184                          u16 needed, u16 id)
 185 {
 186         int ret = -ENOMEM;
 187         int i, j;
 188
 189         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 190                 dev_info(&pf->pdev->dev,
 191                          "param err: pile=%s needed=%d id=0x%04x\n",
 192                          pile ? "<valid>" : "<null>", needed, id);
 193                 return -EINVAL;
 194         }
 195
 196         /* start the linear search with an imperfect hint */
 197         i = pile->search_hint;
 198         while (i < pile->num_entries) {
 199                 /* skip already allocated entries */
 200                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 201                         i++;
 202                         continue;
 203                 }
 204
 205                 /* do we have enough in this lump? */
 206                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 207                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 208                                 break;
 209                 }
 210
 211                 if (j == needed) {
 212                         /* there was enough, so assign it to the requestor */
 213                         for (j = 0; j < needed; j++)
 214                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 215                         ret = i;
 216                         pile->search_hint = i + j;
 217                         break;
 218                 }
 219
 220                 /* not enough, so skip over it and continue looking */
 221                 i += j;
 222         }
 223
 224         return ret;
 225 }
 226
 227 /**
 228  * i40e_put_lump - return a lump of generic resource
 229  * @pile: the pile of resource to search
 230  * @index: the base item index
 231  * @id: the owner id of the items assigned
 232  *
 233  * Returns the count of items in the lump
 234  **/
 235 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 236 {
 237         int valid_id = (id | I40E_PILE_VALID_BIT);
 238         int count = 0;
 239         int i;
 240
 241         if (!pile || index >= pile->num_entries)
 242                 return -EINVAL;
 243
 244         for (i = index;
 245              i < pile->num_entries && pile->list[i] == valid_id;
 246              i++) {
 247                 pile->list[i] = 0;
 248                 count++;
 249         }
 250
 251         if (count && index < pile->search_hint)
 252                 pile->search_hint = index;
 253
 254         return count;
 255 }
 256
 257 /**
 258  * i40e_find_vsi_from_id - searches for the vsi with the given id
 259  * @pf: the pf structure to search for the vsi
 260  * @id: id of the vsi it is searching for
 261  **/
 262 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 263 {
 264         int i;
 265
 266         for (i = 0; i < pf->num_alloc_vsi; i++)
 267                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 268                         return pf->vsi[i];
 269
 270         return NULL;
 271 }
 272
 273 /**
 274  * i40e_service_event_schedule - Schedule the service task to wake up
 275  * @pf: board private structure
 276  *
 277  * If not already scheduled, this puts the task into the work queue
 278  **/
 279 void i40e_service_event_schedule(struct i40e_pf *pf)
 280 {
 281         if ((!test_bit(__I40E_DOWN, pf->state) &&
 282              !test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state)) ||
 283               test_bit(__I40E_RECOVERY_MODE, pf->state))
 284                 queue_work(i40e_wq, &pf->service_task);
 285 }
 286
 287 /**
 288  * i40e_tx_timeout - Respond to a Tx Hang
 289  * @netdev: network interface device structure
 290  *
 291  * If any port has noticed a Tx timeout, it is likely that the whole
 292  * device is munged, not just the one netdev port, so go for the full
 293  * reset.
 294  **/
 295 static void i40e_tx_timeout(struct net_device *netdev, unsigned int txqueue)
 296 {
 297         struct i40e_netdev_priv *np = netdev_priv(netdev);
 298         struct i40e_vsi *vsi = np->vsi;
 299         struct i40e_pf *pf = vsi->back;
 300         struct i40e_ring *tx_ring = NULL;
 301         unsigned int i;
 302         u32 head, val;
 303
 304         pf->tx_timeout_count++;
 305
 306         /* with txqueue index, find the tx_ring struct */
 307         for (i = 0; i < vsi->num_queue_pairs; i++) {
 308                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 309                         if (txqueue ==
 310                             vsi->tx_rings[i]->queue_index) {
 311                                 tx_ring = vsi->tx_rings[i];
 312                                 break;
 313                         }
 314                 }
 315         }
 316
 317         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 318                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 319         else if (time_before(jiffies,
 320                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 321                 return;   /* don't do any new action before the next timeout */
 322
 323         /* don't kick off another recovery if one is already pending */
 324         if (test_and_set_bit(__I40E_TIMEOUT_RECOVERY_PENDING, pf->state))
 325                 return;
 326
 327         if (tx_ring) {
 328                 head = i40e_get_head(tx_ring);
 329                 /* Read interrupt register */
 330                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 331                         val = rd32(&pf->hw,
 332                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 333                                                 tx_ring->vsi->base_vector - 1));
 334                 else
 335                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 336
 337                 netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
 338                             vsi->seid, txqueue, tx_ring->next_to_clean,
 339                             head, tx_ring->next_to_use,
 340                             readl(tx_ring->tail), val);
 341         }
 342
 343         pf->tx_timeout_last_recovery = jiffies;
 344         netdev_info(netdev, "tx_timeout recovery level %d, txqueue %d\n",
 345                     pf->tx_timeout_recovery_level, txqueue);
 346
 347         switch (pf->tx_timeout_recovery_level) {
 348         case 1:
 349                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
 350                 break;
 351         case 2:
 352                 set_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
 353                 break;
 354         case 3:
 355                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
 356                 break;
 357         default:
 358                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 359                 break;
 360         }
 361
 362         i40e_service_event_schedule(pf);
 363         pf->tx_timeout_recovery_level++;
 364 }
 365
 366 /**
 367  * i40e_get_vsi_stats_struct - Get System Network Statistics
 368  * @vsi: the VSI we care about
 369  *
 370  * Returns the address of the device statistics structure.
 371  * The statistics are actually updated from the service task.
 372  **/
 373 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 374 {
 375         return &vsi->net_stats;
 376 }
 377
 378 /**
 379  * i40e_get_netdev_stats_struct_tx - populate stats from a Tx ring
 380  * @ring: Tx ring to get statistics from
 381  * @stats: statistics entry to be updated
 382  **/
 383 static void i40e_get_netdev_stats_struct_tx(struct i40e_ring *ring,
 384                                             struct rtnl_link_stats64 *stats)
 385 {
 386         u64 bytes, packets;
 387         unsigned int start;
 388
 389         do {
 390                 start = u64_stats_fetch_begin_irq(&ring->syncp);
 391                 packets = ring->stats.packets;
 392                 bytes   = ring->stats.bytes;
 393         } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
 394
 395         stats->tx_packets += packets;
 396         stats->tx_bytes   += bytes;
 397 }
 398
 399 /**
 400  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 401  * @netdev: network interface device structure
 402  * @stats: data structure to store statistics
 403  *
 404  * Returns the address of the device statistics structure.
 405  * The statistics are actually updated from the service task.
 406  **/
 407 static void i40e_get_netdev_stats_struct(struct net_device *netdev,
 408                                   struct rtnl_link_stats64 *stats)
 409 {
 410         struct i40e_netdev_priv *np = netdev_priv(netdev);
 411         struct i40e_vsi *vsi = np->vsi;
 412         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 413         struct i40e_ring *ring;
 414         int i;
 415
 416         if (test_bit(__I40E_VSI_DOWN, vsi->state))
 417                 return;
 418
 419         if (!vsi->tx_rings)
 420                 return;
 421
 422         rcu_read_lock();
 423         for (i = 0; i < vsi->num_queue_pairs; i++) {
 424                 u64 bytes, packets;
 425                 unsigned int start;
 426
 427                 ring = READ_ONCE(vsi->tx_rings[i]);
 428                 if (!ring)
 429                         continue;
 430                 i40e_get_netdev_stats_struct_tx(ring, stats);
 431
 432                 if (i40e_enabled_xdp_vsi(vsi)) {
 433                         ring = READ_ONCE(vsi->xdp_rings[i]);
 434                         if (!ring)
 435                                 continue;
 436                         i40e_get_netdev_stats_struct_tx(ring, stats);
 437                 }
 438
 439                 ring = READ_ONCE(vsi->rx_rings[i]);
 440                 if (!ring)
 441                         continue;
 442                 do {
 443                         start   = u64_stats_fetch_begin_irq(&ring->syncp);
 444                         packets = ring->stats.packets;
 445                         bytes   = ring->stats.bytes;
 446                 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
 447
 448                 stats->rx_packets += packets;
 449                 stats->rx_bytes   += bytes;
 450
 451         }
 452         rcu_read_unlock();
 453
 454         /* following stats updated by i40e_watchdog_subtask() */
 455         stats->multicast        = vsi_stats->multicast;
 456         stats->tx_errors        = vsi_stats->tx_errors;
 457         stats->tx_dropped       = vsi_stats->tx_dropped;
 458         stats->rx_errors        = vsi_stats->rx_errors;
 459         stats->rx_dropped       = vsi_stats->rx_dropped;
 460         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 461         stats->rx_length_errors = vsi_stats->rx_length_errors;
 462 }
 463
 464 /**
 465  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 466  * @vsi: the VSI to have its stats reset
 467  **/
 468 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 469 {
 470         struct rtnl_link_stats64 *ns;
 471         int i;
 472
 473         if (!vsi)
 474                 return;
 475
 476         ns = i40e_get_vsi_stats_struct(vsi);
 477         memset(ns, 0, sizeof(*ns));
 478         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 479         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 480         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 481         if (vsi->rx_rings && vsi->rx_rings[0]) {
 482                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 483                         memset(&vsi->rx_rings[i]->stats, 0,
 484                                sizeof(vsi->rx_rings[i]->stats));
 485                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 486                                sizeof(vsi->rx_rings[i]->rx_stats));
 487                         memset(&vsi->tx_rings[i]->stats, 0,
 488                                sizeof(vsi->tx_rings[i]->stats));
 489                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 490                                sizeof(vsi->tx_rings[i]->tx_stats));
 491                 }
 492         }
 493         vsi->stat_offsets_loaded = false;
 494 }
 495
 496 /**
 497  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 498  * @pf: the PF to be reset
 499  **/
 500 void i40e_pf_reset_stats(struct i40e_pf *pf)
 501 {
 502         int i;
 503
 504         memset(&pf->stats, 0, sizeof(pf->stats));
 505         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 506         pf->stat_offsets_loaded = false;
 507
 508         for (i = 0; i < I40E_MAX_VEB; i++) {
 509                 if (pf->veb[i]) {
 510                         memset(&pf->veb[i]->stats, 0,
 511                                sizeof(pf->veb[i]->stats));
 512                         memset(&pf->veb[i]->stats_offsets, 0,
 513                                sizeof(pf->veb[i]->stats_offsets));
 514                         memset(&pf->veb[i]->tc_stats, 0,
 515                                sizeof(pf->veb[i]->tc_stats));
 516                         memset(&pf->veb[i]->tc_stats_offsets, 0,
 517                                sizeof(pf->veb[i]->tc_stats_offsets));
 518                         pf->veb[i]->stat_offsets_loaded = false;
 519                 }
 520         }
 521         pf->hw_csum_rx_error = 0;
 522 }
 523
 524 /**
 525  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 526  * @hw: ptr to the hardware info
 527  * @hireg: the high 32 bit reg to read
 528  * @loreg: the low 32 bit reg to read
 529  * @offset_loaded: has the initial offset been loaded yet
 530  * @offset: ptr to current offset value
 531  * @stat: ptr to the stat
 532  *
 533  * Since the device stats are not reset at PFReset, they likely will not
 534  * be zeroed when the driver starts.  We'll save the first values read
 535  * and use them as offsets to be subtracted from the raw values in order
 536  * to report stats that count from zero.  In the process, we also manage
 537  * the potential roll-over.
 538  **/
 539 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 540                                bool offset_loaded, u64 *offset, u64 *stat)
 541 {
 542         u64 new_data;
 543
 544         if (hw->device_id == I40E_DEV_ID_QEMU) {
 545                 new_data = rd32(hw, loreg);
 546                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 547         } else {
 548                 new_data = rd64(hw, loreg);
 549         }
 550         if (!offset_loaded)
 551                 *offset = new_data;
 552         if (likely(new_data >= *offset))
 553                 *stat = new_data - *offset;
 554         else
 555                 *stat = (new_data + BIT_ULL(48)) - *offset;
 556         *stat &= 0xFFFFFFFFFFFFULL;
 557 }
 558
 559 /**
 560  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 561  * @hw: ptr to the hardware info
 562  * @reg: the hw reg to read
 563  * @offset_loaded: has the initial offset been loaded yet
 564  * @offset: ptr to current offset value
 565  * @stat: ptr to the stat
 566  **/
 567 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 568                                bool offset_loaded, u64 *offset, u64 *stat)
 569 {
 570         u32 new_data;
 571
 572         new_data = rd32(hw, reg);
 573         if (!offset_loaded)
 574                 *offset = new_data;
 575         if (likely(new_data >= *offset))
 576                 *stat = (u32)(new_data - *offset);
 577         else
 578                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 579 }
 580
 581 /**
 582  * i40e_stat_update_and_clear32 - read and clear hw reg, update a 32 bit stat
 583  * @hw: ptr to the hardware info
 584  * @reg: the hw reg to read and clear
 585  * @stat: ptr to the stat
 586  **/
 587 static void i40e_stat_update_and_clear32(struct i40e_hw *hw, u32 reg, u64 *stat)
 588 {
 589         u32 new_data = rd32(hw, reg);
 590
 591         wr32(hw, reg, 1); /* must write a nonzero value to clear register */
 592         *stat += new_data;
 593 }
 594
 595 /**
 596  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 597  * @vsi: the VSI to be updated
 598  **/
 599 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 600 {
 601         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 602         struct i40e_pf *pf = vsi->back;
 603         struct i40e_hw *hw = &pf->hw;
 604         struct i40e_eth_stats *oes;
 605         struct i40e_eth_stats *es;     /* device's eth stats */
 606
 607         es = &vsi->eth_stats;
 608         oes = &vsi->eth_stats_offsets;
 609
 610         /* Gather up the stats that the hw collects */
 611         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 612                            vsi->stat_offsets_loaded,
 613                            &oes->tx_errors, &es->tx_errors);
 614         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 615                            vsi->stat_offsets_loaded,
 616                            &oes->rx_discards, &es->rx_discards);
 617         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 618                            vsi->stat_offsets_loaded,
 619                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 620
 621         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 622                            I40E_GLV_GORCL(stat_idx),
 623                            vsi->stat_offsets_loaded,
 624                            &oes->rx_bytes, &es->rx_bytes);
 625         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 626                            I40E_GLV_UPRCL(stat_idx),
 627                            vsi->stat_offsets_loaded,
 628                            &oes->rx_unicast, &es->rx_unicast);
 629         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 630                            I40E_GLV_MPRCL(stat_idx),
 631                            vsi->stat_offsets_loaded,
 632                            &oes->rx_multicast, &es->rx_multicast);
 633         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 634                            I40E_GLV_BPRCL(stat_idx),
 635                            vsi->stat_offsets_loaded,
 636                            &oes->rx_broadcast, &es->rx_broadcast);
 637
 638         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 639                            I40E_GLV_GOTCL(stat_idx),
 640                            vsi->stat_offsets_loaded,
 641                            &oes->tx_bytes, &es->tx_bytes);
 642         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 643                            I40E_GLV_UPTCL(stat_idx),
 644                            vsi->stat_offsets_loaded,
 645                            &oes->tx_unicast, &es->tx_unicast);
 646         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 647                            I40E_GLV_MPTCL(stat_idx),
 648                            vsi->stat_offsets_loaded,
 649                            &oes->tx_multicast, &es->tx_multicast);
 650         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 651                            I40E_GLV_BPTCL(stat_idx),
 652                            vsi->stat_offsets_loaded,
 653                            &oes->tx_broadcast, &es->tx_broadcast);
 654         vsi->stat_offsets_loaded = true;
 655 }
 656
 657 /**
 658  * i40e_update_veb_stats - Update Switch component statistics
 659  * @veb: the VEB being updated
 660  **/
 661 void i40e_update_veb_stats(struct i40e_veb *veb)
 662 {
 663         struct i40e_pf *pf = veb->pf;
 664         struct i40e_hw *hw = &pf->hw;
 665         struct i40e_eth_stats *oes;
 666         struct i40e_eth_stats *es;     /* device's eth stats */
 667         struct i40e_veb_tc_stats *veb_oes;
 668         struct i40e_veb_tc_stats *veb_es;
 669         int i, idx = 0;
 670
 671         idx = veb->stats_idx;
 672         es = &veb->stats;
 673         oes = &veb->stats_offsets;
 674         veb_es = &veb->tc_stats;
 675         veb_oes = &veb->tc_stats_offsets;
 676
 677         /* Gather up the stats that the hw collects */
 678         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 679                            veb->stat_offsets_loaded,
 680                            &oes->tx_discards, &es->tx_discards);
 681         if (hw->revision_id > 0)
 682                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 683                                    veb->stat_offsets_loaded,
 684                                    &oes->rx_unknown_protocol,
 685                                    &es->rx_unknown_protocol);
 686         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 687                            veb->stat_offsets_loaded,
 688                            &oes->rx_bytes, &es->rx_bytes);
 689         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 690                            veb->stat_offsets_loaded,
 691                            &oes->rx_unicast, &es->rx_unicast);
 692         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 693                            veb->stat_offsets_loaded,
 694                            &oes->rx_multicast, &es->rx_multicast);
 695         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 696                            veb->stat_offsets_loaded,
 697                            &oes->rx_broadcast, &es->rx_broadcast);
 698
 699         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 700                            veb->stat_offsets_loaded,
 701                            &oes->tx_bytes, &es->tx_bytes);
 702         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 703                            veb->stat_offsets_loaded,
 704                            &oes->tx_unicast, &es->tx_unicast);
 705         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 706                            veb->stat_offsets_loaded,
 707                            &oes->tx_multicast, &es->tx_multicast);
 708         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 709                            veb->stat_offsets_loaded,
 710                            &oes->tx_broadcast, &es->tx_broadcast);
 711         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 712                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 713                                    I40E_GLVEBTC_RPCL(i, idx),
 714                                    veb->stat_offsets_loaded,
 715                                    &veb_oes->tc_rx_packets[i],
 716                                    &veb_es->tc_rx_packets[i]);
 717                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 718                                    I40E_GLVEBTC_RBCL(i, idx),
 719                                    veb->stat_offsets_loaded,
 720                                    &veb_oes->tc_rx_bytes[i],
 721                                    &veb_es->tc_rx_bytes[i]);
 722                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 723                                    I40E_GLVEBTC_TPCL(i, idx),
 724                                    veb->stat_offsets_loaded,
 725                                    &veb_oes->tc_tx_packets[i],
 726                                    &veb_es->tc_tx_packets[i]);
 727                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 728                                    I40E_GLVEBTC_TBCL(i, idx),
 729                                    veb->stat_offsets_loaded,
 730                                    &veb_oes->tc_tx_bytes[i],
 731                                    &veb_es->tc_tx_bytes[i]);
 732         }
 733         veb->stat_offsets_loaded = true;
 734 }
 735
 736 /**
 737  * i40e_update_vsi_stats - Update the vsi statistics counters.
 738  * @vsi: the VSI to be updated
 739  *
 740  * There are a few instances where we store the same stat in a
 741  * couple of different structs.  This is partly because we have
 742  * the netdev stats that need to be filled out, which is slightly
 743  * different from the "eth_stats" defined by the chip and used in
 744  * VF communications.  We sort it out here.
 745  **/
 746 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 747 {
 748         struct i40e_pf *pf = vsi->back;
 749         struct rtnl_link_stats64 *ons;
 750         struct rtnl_link_stats64 *ns;   /* netdev stats */
 751         struct i40e_eth_stats *oes;
 752         struct i40e_eth_stats *es;     /* device's eth stats */
 753         u32 tx_restart, tx_busy;
 754         struct i40e_ring *p;
 755         u32 rx_page, rx_buf;
 756         u64 bytes, packets;
 757         unsigned int start;
 758         u64 tx_linearize;
 759         u64 tx_force_wb;
 760         u64 rx_p, rx_b;
 761         u64 tx_p, tx_b;
 762         u16 q;
 763
 764         if (test_bit(__I40E_VSI_DOWN, vsi->state) ||
 765             test_bit(__I40E_CONFIG_BUSY, pf->state))
 766                 return;
 767
 768         ns = i40e_get_vsi_stats_struct(vsi);
 769         ons = &vsi->net_stats_offsets;
 770         es = &vsi->eth_stats;
 771         oes = &vsi->eth_stats_offsets;
 772
 773         /* Gather up the netdev and vsi stats that the driver collects
 774          * on the fly during packet processing
 775          */
 776         rx_b = rx_p = 0;
 777         tx_b = tx_p = 0;
 778         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 779         rx_page = 0;
 780         rx_buf = 0;
 781         rcu_read_lock();
 782         for (q = 0; q < vsi->num_queue_pairs; q++) {
 783                 /* locate Tx ring */
 784                 p = READ_ONCE(vsi->tx_rings[q]);
 785                 if (!p)
 786                         continue;
 787
 788                 do {
 789                         start = u64_stats_fetch_begin_irq(&p->syncp);
 790                         packets = p->stats.packets;
 791                         bytes = p->stats.bytes;
 792                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 793                 tx_b += bytes;
 794                 tx_p += packets;
 795                 tx_restart += p->tx_stats.restart_queue;
 796                 tx_busy += p->tx_stats.tx_busy;
 797                 tx_linearize += p->tx_stats.tx_linearize;
 798                 tx_force_wb += p->tx_stats.tx_force_wb;
 799
 800                 /* locate Rx ring */
 801                 p = READ_ONCE(vsi->rx_rings[q]);
 802                 if (!p)
 803                         continue;
 804
 805                 do {
 806                         start = u64_stats_fetch_begin_irq(&p->syncp);
 807                         packets = p->stats.packets;
 808                         bytes = p->stats.bytes;
 809                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 810                 rx_b += bytes;
 811                 rx_p += packets;
 812                 rx_buf += p->rx_stats.alloc_buff_failed;
 813                 rx_page += p->rx_stats.alloc_page_failed;
 814
 815                 if (i40e_enabled_xdp_vsi(vsi)) {
 816                         /* locate XDP ring */
 817                         p = READ_ONCE(vsi->xdp_rings[q]);
 818                         if (!p)
 819                                 continue;
 820
 821                         do {
 822                                 start = u64_stats_fetch_begin_irq(&p->syncp);
 823                                 packets = p->stats.packets;
 824                                 bytes = p->stats.bytes;
 825                         } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 826                         tx_b += bytes;
 827                         tx_p += packets;
 828                         tx_restart += p->tx_stats.restart_queue;
 829                         tx_busy += p->tx_stats.tx_busy;
 830                         tx_linearize += p->tx_stats.tx_linearize;
 831                         tx_force_wb += p->tx_stats.tx_force_wb;
 832                 }
 833         }
 834         rcu_read_unlock();
 835         vsi->tx_restart = tx_restart;
 836         vsi->tx_busy = tx_busy;
 837         vsi->tx_linearize = tx_linearize;
 838         vsi->tx_force_wb = tx_force_wb;
 839         vsi->rx_page_failed = rx_page;
 840         vsi->rx_buf_failed = rx_buf;
 841
 842         ns->rx_packets = rx_p;
 843         ns->rx_bytes = rx_b;
 844         ns->tx_packets = tx_p;
 845         ns->tx_bytes = tx_b;
 846
 847         /* update netdev stats from eth stats */
 848         i40e_update_eth_stats(vsi);
 849         ons->tx_errors = oes->tx_errors;
 850         ns->tx_errors = es->tx_errors;
 851         ons->multicast = oes->rx_multicast;
 852         ns->multicast = es->rx_multicast;
 853         ons->rx_dropped = oes->rx_discards;
 854         ns->rx_dropped = es->rx_discards;
 855         ons->tx_dropped = oes->tx_discards;
 856         ns->tx_dropped = es->tx_discards;
 857
 858         /* pull in a couple PF stats if this is the main vsi */
 859         if (vsi == pf->vsi[pf->lan_vsi]) {
 860                 ns->rx_crc_errors = pf->stats.crc_errors;
 861                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 862                 ns->rx_length_errors = pf->stats.rx_length_errors;
 863         }
 864 }
 865
 866 /**
 867  * i40e_update_pf_stats - Update the PF statistics counters.
 868  * @pf: the PF to be updated
 869  **/
 870 static void i40e_update_pf_stats(struct i40e_pf *pf)
 871 {
 872         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 873         struct i40e_hw_port_stats *nsd = &pf->stats;
 874         struct i40e_hw *hw = &pf->hw;
 875         u32 val;
 876         int i;
 877
 878         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 879                            I40E_GLPRT_GORCL(hw->port),
 880                            pf->stat_offsets_loaded,
 881                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 882         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 883                            I40E_GLPRT_GOTCL(hw->port),
 884                            pf->stat_offsets_loaded,
 885                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 886         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 887                            pf->stat_offsets_loaded,
 888                            &osd->eth.rx_discards,
 889                            &nsd->eth.rx_discards);
 890         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 891                            I40E_GLPRT_UPRCL(hw->port),
 892                            pf->stat_offsets_loaded,
 893                            &osd->eth.rx_unicast,
 894                            &nsd->eth.rx_unicast);
 895         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 896                            I40E_GLPRT_MPRCL(hw->port),
 897                            pf->stat_offsets_loaded,
 898                            &osd->eth.rx_multicast,
 899                            &nsd->eth.rx_multicast);
 900         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 901                            I40E_GLPRT_BPRCL(hw->port),
 902                            pf->stat_offsets_loaded,
 903                            &osd->eth.rx_broadcast,
 904                            &nsd->eth.rx_broadcast);
 905         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 906                            I40E_GLPRT_UPTCL(hw->port),
 907                            pf->stat_offsets_loaded,
 908                            &osd->eth.tx_unicast,
 909                            &nsd->eth.tx_unicast);
 910         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 911                            I40E_GLPRT_MPTCL(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->eth.tx_multicast,
 914                            &nsd->eth.tx_multicast);
 915         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 916                            I40E_GLPRT_BPTCL(hw->port),
 917                            pf->stat_offsets_loaded,
 918                            &osd->eth.tx_broadcast,
 919                            &nsd->eth.tx_broadcast);
 920
 921         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 922                            pf->stat_offsets_loaded,
 923                            &osd->tx_dropped_link_down,
 924                            &nsd->tx_dropped_link_down);
 925
 926         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 927                            pf->stat_offsets_loaded,
 928                            &osd->crc_errors, &nsd->crc_errors);
 929
 930         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 931                            pf->stat_offsets_loaded,
 932                            &osd->illegal_bytes, &nsd->illegal_bytes);
 933
 934         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 935                            pf->stat_offsets_loaded,
 936                            &osd->mac_local_faults,
 937                            &nsd->mac_local_faults);
 938         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 939                            pf->stat_offsets_loaded,
 940                            &osd->mac_remote_faults,
 941                            &nsd->mac_remote_faults);
 942
 943         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 944                            pf->stat_offsets_loaded,
 945                            &osd->rx_length_errors,
 946                            &nsd->rx_length_errors);
 947
 948         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->link_xon_rx, &nsd->link_xon_rx);
 951         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 952                            pf->stat_offsets_loaded,
 953                            &osd->link_xon_tx, &nsd->link_xon_tx);
 954         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 955                            pf->stat_offsets_loaded,
 956                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 957         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 958                            pf->stat_offsets_loaded,
 959                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 960
 961         for (i = 0; i < 8; i++) {
 962                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 963                                    pf->stat_offsets_loaded,
 964                                    &osd->priority_xoff_rx[i],
 965                                    &nsd->priority_xoff_rx[i]);
 966                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 967                                    pf->stat_offsets_loaded,
 968                                    &osd->priority_xon_rx[i],
 969                                    &nsd->priority_xon_rx[i]);
 970                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 971                                    pf->stat_offsets_loaded,
 972                                    &osd->priority_xon_tx[i],
 973                                    &nsd->priority_xon_tx[i]);
 974                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 975                                    pf->stat_offsets_loaded,
 976                                    &osd->priority_xoff_tx[i],
 977                                    &nsd->priority_xoff_tx[i]);
 978                 i40e_stat_update32(hw,
 979                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 980                                    pf->stat_offsets_loaded,
 981                                    &osd->priority_xon_2_xoff[i],
 982                                    &nsd->priority_xon_2_xoff[i]);
 983         }
 984
 985         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
 986                            I40E_GLPRT_PRC64L(hw->port),
 987                            pf->stat_offsets_loaded,
 988                            &osd->rx_size_64, &nsd->rx_size_64);
 989         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
 990                            I40E_GLPRT_PRC127L(hw->port),
 991                            pf->stat_offsets_loaded,
 992                            &osd->rx_size_127, &nsd->rx_size_127);
 993         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
 994                            I40E_GLPRT_PRC255L(hw->port),
 995                            pf->stat_offsets_loaded,
 996                            &osd->rx_size_255, &nsd->rx_size_255);
 997         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
 998                            I40E_GLPRT_PRC511L(hw->port),
 999                            pf->stat_offsets_loaded,
1000                            &osd->rx_size_511, &nsd->rx_size_511);
1001         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1002                            I40E_GLPRT_PRC1023L(hw->port),
1003                            pf->stat_offsets_loaded,
1004                            &osd->rx_size_1023, &nsd->rx_size_1023);
1005         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1006                            I40E_GLPRT_PRC1522L(hw->port),
1007                            pf->stat_offsets_loaded,
1008                            &osd->rx_size_1522, &nsd->rx_size_1522);
1009         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1010                            I40E_GLPRT_PRC9522L(hw->port),
1011                            pf->stat_offsets_loaded,
1012                            &osd->rx_size_big, &nsd->rx_size_big);
1013
1014         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1015                            I40E_GLPRT_PTC64L(hw->port),
1016                            pf->stat_offsets_loaded,
1017                            &osd->tx_size_64, &nsd->tx_size_64);
1018         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1019                            I40E_GLPRT_PTC127L(hw->port),
1020                            pf->stat_offsets_loaded,
1021                            &osd->tx_size_127, &nsd->tx_size_127);
1022         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1023                            I40E_GLPRT_PTC255L(hw->port),
1024                            pf->stat_offsets_loaded,
1025                            &osd->tx_size_255, &nsd->tx_size_255);
1026         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1027                            I40E_GLPRT_PTC511L(hw->port),
1028                            pf->stat_offsets_loaded,
1029                            &osd->tx_size_511, &nsd->tx_size_511);
1030         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1031                            I40E_GLPRT_PTC1023L(hw->port),
1032                            pf->stat_offsets_loaded,
1033                            &osd->tx_size_1023, &nsd->tx_size_1023);
1034         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1035                            I40E_GLPRT_PTC1522L(hw->port),
1036                            pf->stat_offsets_loaded,
1037                            &osd->tx_size_1522, &nsd->tx_size_1522);
1038         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1039                            I40E_GLPRT_PTC9522L(hw->port),
1040                            pf->stat_offsets_loaded,
1041                            &osd->tx_size_big, &nsd->tx_size_big);
1042
1043         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1044                            pf->stat_offsets_loaded,
1045                            &osd->rx_undersize, &nsd->rx_undersize);
1046         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->rx_fragments, &nsd->rx_fragments);
1049         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->rx_oversize, &nsd->rx_oversize);
1052         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1053                            pf->stat_offsets_loaded,
1054                            &osd->rx_jabber, &nsd->rx_jabber);
1055
1056         /* FDIR stats */
1057         i40e_stat_update_and_clear32(hw,
1058                         I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(hw->pf_id)),
1059                         &nsd->fd_atr_match);
1060         i40e_stat_update_and_clear32(hw,
1061                         I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(hw->pf_id)),
1062                         &nsd->fd_sb_match);
1063         i40e_stat_update_and_clear32(hw,
1064                         I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(hw->pf_id)),
1065                         &nsd->fd_atr_tunnel_match);
1066
1067         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1068         nsd->tx_lpi_status =
1069                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1070                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1071         nsd->rx_lpi_status =
1072                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1073                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1074         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1075                            pf->stat_offsets_loaded,
1076                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1077         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1080
1081         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1082             !test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
1083                 nsd->fd_sb_status = true;
1084         else
1085                 nsd->fd_sb_status = false;
1086
1087         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1088             !test_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state))
1089                 nsd->fd_atr_status = true;
1090         else
1091                 nsd->fd_atr_status = false;
1092
1093         pf->stat_offsets_loaded = true;
1094 }
1095
1096 /**
1097  * i40e_update_stats - Update the various statistics counters.
1098  * @vsi: the VSI to be updated
1099  *
1100  * Update the various stats for this VSI and its related entities.
1101  **/
1102 void i40e_update_stats(struct i40e_vsi *vsi)
1103 {
1104         struct i40e_pf *pf = vsi->back;
1105
1106         if (vsi == pf->vsi[pf->lan_vsi])
1107                 i40e_update_pf_stats(pf);
1108
1109         i40e_update_vsi_stats(vsi);
1110 }
1111
1112 /**
1113  * i40e_count_filters - counts VSI mac filters
1114  * @vsi: the VSI to be searched
1115  *
1116  * Returns count of mac filters
1117  **/
1118 int i40e_count_filters(struct i40e_vsi *vsi)
1119 {
1120         struct i40e_mac_filter *f;
1121         struct hlist_node *h;
1122         int bkt;
1123         int cnt = 0;
1124
1125         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
1126                 ++cnt;
1127
1128         return cnt;
1129 }
1130
1131 /**
1132  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1133  * @vsi: the VSI to be searched
1134  * @macaddr: the MAC address
1135  * @vlan: the vlan
1136  *
1137  * Returns ptr to the filter object or NULL
1138  **/
1139 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1140                                                 const u8 *macaddr, s16 vlan)
1141 {
1142         struct i40e_mac_filter *f;
1143         u64 key;
1144
1145         if (!vsi || !macaddr)
1146                 return NULL;
1147
1148         key = i40e_addr_to_hkey(macaddr);
1149         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1150                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1151                     (vlan == f->vlan))
1152                         return f;
1153         }
1154         return NULL;
1155 }
1156
1157 /**
1158  * i40e_find_mac - Find a mac addr in the macvlan filters list
1159  * @vsi: the VSI to be searched
1160  * @macaddr: the MAC address we are searching for
1161  *
1162  * Returns the first filter with the provided MAC address or NULL if
1163  * MAC address was not found
1164  **/
1165 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, const u8 *macaddr)
1166 {
1167         struct i40e_mac_filter *f;
1168         u64 key;
1169
1170         if (!vsi || !macaddr)
1171                 return NULL;
1172
1173         key = i40e_addr_to_hkey(macaddr);
1174         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1175                 if ((ether_addr_equal(macaddr, f->macaddr)))
1176                         return f;
1177         }
1178         return NULL;
1179 }
1180
1181 /**
1182  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1183  * @vsi: the VSI to be searched
1184  *
1185  * Returns true if VSI is in vlan mode or false otherwise
1186  **/
1187 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1188 {
1189         /* If we have a PVID, always operate in VLAN mode */
1190         if (vsi->info.pvid)
1191                 return true;
1192
1193         /* We need to operate in VLAN mode whenever we have any filters with
1194          * a VLAN other than I40E_VLAN_ALL. We could check the table each
1195          * time, incurring search cost repeatedly. However, we can notice two
1196          * things:
1197          *
1198          * 1) the only place where we can gain a VLAN filter is in
1199          *    i40e_add_filter.
1200          *
1201          * 2) the only place where filters are actually removed is in
1202          *    i40e_sync_filters_subtask.
1203          *
1204          * Thus, we can simply use a boolean value, has_vlan_filters which we
1205          * will set to true when we add a VLAN filter in i40e_add_filter. Then
1206          * we have to perform the full search after deleting filters in
1207          * i40e_sync_filters_subtask, but we already have to search
1208          * filters here and can perform the check at the same time. This
1209          * results in avoiding embedding a loop for VLAN mode inside another
1210          * loop over all the filters, and should maintain correctness as noted
1211          * above.
1212          */
1213         return vsi->has_vlan_filter;
1214 }
1215
1216 /**
1217  * i40e_correct_mac_vlan_filters - Correct non-VLAN filters if necessary
1218  * @vsi: the VSI to configure
1219  * @tmp_add_list: list of filters ready to be added
1220  * @tmp_del_list: list of filters ready to be deleted
1221  * @vlan_filters: the number of active VLAN filters
1222  *
1223  * Update VLAN=0 and VLAN=-1 (I40E_VLAN_ANY) filters properly so that they
1224  * behave as expected. If we have any active VLAN filters remaining or about
1225  * to be added then we need to update non-VLAN filters to be marked as VLAN=0
1226  * so that they only match against untagged traffic. If we no longer have any
1227  * active VLAN filters, we need to make all non-VLAN filters marked as VLAN=-1
1228  * so that they match against both tagged and untagged traffic. In this way,
1229  * we ensure that we correctly receive the desired traffic. This ensures that
1230  * when we have an active VLAN we will receive only untagged traffic and
1231  * traffic matching active VLANs. If we have no active VLANs then we will
1232  * operate in non-VLAN mode and receive all traffic, tagged or untagged.
1233  *
1234  * Finally, in a similar fashion, this function also corrects filters when
1235  * there is an active PVID assigned to this VSI.
1236  *
1237  * In case of memory allocation failure return -ENOMEM. Otherwise, return 0.
1238  *
1239  * This function is only expected to be called from within
1240  * i40e_sync_vsi_filters.
1241  *
1242  * NOTE: This function expects to be called while under the
1243  * mac_filter_hash_lock
1244  */
1245 static int i40e_correct_mac_vlan_filters(struct i40e_vsi *vsi,
1246                                          struct hlist_head *tmp_add_list,
1247                                          struct hlist_head *tmp_del_list,
1248                                          int vlan_filters)
1249 {
1250         s16 pvid = le16_to_cpu(vsi->info.pvid);
1251         struct i40e_mac_filter *f, *add_head;
1252         struct i40e_new_mac_filter *new;
1253         struct hlist_node *h;
1254         int bkt, new_vlan;
1255
1256         /* To determine if a particular filter needs to be replaced we
1257          * have the three following conditions:
1258          *
1259          * a) if we have a PVID assigned, then all filters which are
1260          *    not marked as VLAN=PVID must be replaced with filters that
1261          *    are.
1262          * b) otherwise, if we have any active VLANS, all filters
1263          *    which are marked as VLAN=-1 must be replaced with
1264          *    filters marked as VLAN=0
1265          * c) finally, if we do not have any active VLANS, all filters
1266          *    which are marked as VLAN=0 must be replaced with filters
1267          *    marked as VLAN=-1
1268          */
1269
1270         /* Update the filters about to be added in place */
1271         hlist_for_each_entry(new, tmp_add_list, hlist) {
1272                 if (pvid && new->f->vlan != pvid)
1273                         new->f->vlan = pvid;
1274                 else if (vlan_filters && new->f->vlan == I40E_VLAN_ANY)
1275                         new->f->vlan = 0;
1276                 else if (!vlan_filters && new->f->vlan == 0)
1277                         new->f->vlan = I40E_VLAN_ANY;
1278         }
1279
1280         /* Update the remaining active filters */
1281         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1282                 /* Combine the checks for whether a filter needs to be changed
1283                  * and then determine the new VLAN inside the if block, in
1284                  * order to avoid duplicating code for adding the new filter
1285                  * then deleting the old filter.
1286                  */
1287                 if ((pvid && f->vlan != pvid) ||
1288                     (vlan_filters && f->vlan == I40E_VLAN_ANY) ||
1289                     (!vlan_filters && f->vlan == 0)) {
1290                         /* Determine the new vlan we will be adding */
1291                         if (pvid)
1292                                 new_vlan = pvid;
1293                         else if (vlan_filters)
1294                                 new_vlan = 0;
1295                         else
1296                                 new_vlan = I40E_VLAN_ANY;
1297
1298                         /* Create the new filter */
1299                         add_head = i40e_add_filter(vsi, f->macaddr, new_vlan);
1300                         if (!add_head)
1301                                 return -ENOMEM;
1302
1303                         /* Create a temporary i40e_new_mac_filter */
1304                         new = kzalloc(sizeof(*new), GFP_ATOMIC);
1305                         if (!new)
1306                                 return -ENOMEM;
1307
1308                         new->f = add_head;
1309                         new->state = add_head->state;
1310
1311                         /* Add the new filter to the tmp list */
1312                         hlist_add_head(&new->hlist, tmp_add_list);
1313
1314                         /* Put the original filter into the delete list */
1315                         f->state = I40E_FILTER_REMOVE;
1316                         hash_del(&f->hlist);
1317                         hlist_add_head(&f->hlist, tmp_del_list);
1318                 }
1319         }
1320
1321         vsi->has_vlan_filter = !!vlan_filters;
1322
1323         return 0;
1324 }
1325
1326 /**
1327  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1328  * @vsi: the PF Main VSI - inappropriate for any other VSI
1329  * @macaddr: the MAC address
1330  *
1331  * Remove whatever filter the firmware set up so the driver can manage
1332  * its own filtering intelligently.
1333  **/
1334 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1335 {
1336         struct i40e_aqc_remove_macvlan_element_data element;
1337         struct i40e_pf *pf = vsi->back;
1338
1339         /* Only appropriate for the PF main VSI */
1340         if (vsi->type != I40E_VSI_MAIN)
1341                 return;
1342
1343         memset(&element, 0, sizeof(element));
1344         ether_addr_copy(element.mac_addr, macaddr);
1345         element.vlan_tag = 0;
1346         /* Ignore error returns, some firmware does it this way... */
1347         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1348         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1349
1350         memset(&element, 0, sizeof(element));
1351         ether_addr_copy(element.mac_addr, macaddr);
1352         element.vlan_tag = 0;
1353         /* ...and some firmware does it this way. */
1354         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1355                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1356         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1357 }
1358
1359 /**
1360  * i40e_add_filter - Add a mac/vlan filter to the VSI
1361  * @vsi: the VSI to be searched
1362  * @macaddr: the MAC address
1363  * @vlan: the vlan
1364  *
1365  * Returns ptr to the filter object or NULL when no memory available.
1366  *
1367  * NOTE: This function is expected to be called with mac_filter_hash_lock
1368  * being held.
1369  **/
1370 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1371                                         const u8 *macaddr, s16 vlan)
1372 {
1373         struct i40e_mac_filter *f;
1374         u64 key;
1375
1376         if (!vsi || !macaddr)
1377                 return NULL;
1378
1379         f = i40e_find_filter(vsi, macaddr, vlan);
1380         if (!f) {
1381                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1382                 if (!f)
1383                         return NULL;
1384
1385                 /* Update the boolean indicating if we need to function in
1386                  * VLAN mode.
1387                  */
1388                 if (vlan >= 0)
1389                         vsi->has_vlan_filter = true;
1390
1391                 ether_addr_copy(f->macaddr, macaddr);
1392                 f->vlan = vlan;
1393                 f->state = I40E_FILTER_NEW;
1394                 INIT_HLIST_NODE(&f->hlist);
1395
1396                 key = i40e_addr_to_hkey(macaddr);
1397                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1398
1399                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1400                 set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
1401         }
1402
1403         /* If we're asked to add a filter that has been marked for removal, it
1404          * is safe to simply restore it to active state. __i40e_del_filter
1405          * will have simply deleted any filters which were previously marked
1406          * NEW or FAILED, so if it is currently marked REMOVE it must have
1407          * previously been ACTIVE. Since we haven't yet run the sync filters
1408          * task, just restore this filter to the ACTIVE state so that the
1409          * sync task leaves it in place
1410          */
1411         if (f->state == I40E_FILTER_REMOVE)
1412                 f->state = I40E_FILTER_ACTIVE;
1413
1414         return f;
1415 }
1416
1417 /**
1418  * __i40e_del_filter - Remove a specific filter from the VSI
1419  * @vsi: VSI to remove from
1420  * @f: the filter to remove from the list
1421  *
1422  * This function should be called instead of i40e_del_filter only if you know
1423  * the exact filter you will remove already, such as via i40e_find_filter or
1424  * i40e_find_mac.
1425  *
1426  * NOTE: This function is expected to be called with mac_filter_hash_lock
1427  * being held.
1428  * ANOTHER NOTE: This function MUST be called from within the context of
1429  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1430  * instead of list_for_each_entry().
1431  **/
1432 void __i40e_del_filter(struct i40e_vsi *vsi, struct i40e_mac_filter *f)
1433 {
1434         if (!f)
1435                 return;
1436
1437         /* If the filter was never added to firmware then we can just delete it
1438          * directly and we don't want to set the status to remove or else an
1439          * admin queue command will unnecessarily fire.
1440          */
1441         if ((f->state == I40E_FILTER_FAILED) ||
1442             (f->state == I40E_FILTER_NEW)) {
1443                 hash_del(&f->hlist);
1444                 kfree(f);
1445         } else {
1446                 f->state = I40E_FILTER_REMOVE;
1447         }
1448
1449         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1450         set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
1451 }
1452
1453 /**
1454  * i40e_del_filter - Remove a MAC/VLAN filter from the VSI
1455  * @vsi: the VSI to be searched
1456  * @macaddr: the MAC address
1457  * @vlan: the VLAN
1458  *
1459  * NOTE: This function is expected to be called with mac_filter_hash_lock
1460  * being held.
1461  * ANOTHER NOTE: This function MUST be called from within the context of
1462  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1463  * instead of list_for_each_entry().
1464  **/
1465 void i40e_del_filter(struct i40e_vsi *vsi, const u8 *macaddr, s16 vlan)
1466 {
1467         struct i40e_mac_filter *f;
1468
1469         if (!vsi || !macaddr)
1470                 return;
1471
1472         f = i40e_find_filter(vsi, macaddr, vlan);
1473         __i40e_del_filter(vsi, f);
1474 }
1475
1476 /**
1477  * i40e_add_mac_filter - Add a MAC filter for all active VLANs
1478  * @vsi: the VSI to be searched
1479  * @macaddr: the mac address to be filtered
1480  *
1481  * If we're not in VLAN mode, just add the filter to I40E_VLAN_ANY. Otherwise,
1482  * go through all the macvlan filters and add a macvlan filter for each
1483  * unique vlan that already exists. If a PVID has been assigned, instead only
1484  * add the macaddr to that VLAN.
1485  *
1486  * Returns last filter added on success, else NULL
1487  **/
1488 struct i40e_mac_filter *i40e_add_mac_filter(struct i40e_vsi *vsi,
1489                                             const u8 *macaddr)
1490 {
1491         struct i40e_mac_filter *f, *add = NULL;
1492         struct hlist_node *h;
1493         int bkt;
1494
1495         if (vsi->info.pvid)
1496                 return i40e_add_filter(vsi, macaddr,
1497                                        le16_to_cpu(vsi->info.pvid));
1498
1499         if (!i40e_is_vsi_in_vlan(vsi))
1500                 return i40e_add_filter(vsi, macaddr, I40E_VLAN_ANY);
1501
1502         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1503                 if (f->state == I40E_FILTER_REMOVE)
1504                         continue;
1505                 add = i40e_add_filter(vsi, macaddr, f->vlan);
1506                 if (!add)
1507                         return NULL;
1508         }
1509
1510         return add;
1511 }
1512
1513 /**
1514  * i40e_del_mac_filter - Remove a MAC filter from all VLANs
1515  * @vsi: the VSI to be searched
1516  * @macaddr: the mac address to be removed
1517  *
1518  * Removes a given MAC address from a VSI regardless of what VLAN it has been
1519  * associated with.
1520  *
1521  * Returns 0 for success, or error
1522  **/
1523 int i40e_del_mac_filter(struct i40e_vsi *vsi, const u8 *macaddr)
1524 {
1525         struct i40e_mac_filter *f;
1526         struct hlist_node *h;
1527         bool found = false;
1528         int bkt;
1529
1530         lockdep_assert_held(&vsi->mac_filter_hash_lock);
1531         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1532                 if (ether_addr_equal(macaddr, f->macaddr)) {
1533                         __i40e_del_filter(vsi, f);
1534                         found = true;
1535                 }
1536         }
1537
1538         if (found)
1539                 return 0;
1540         else
1541                 return -ENOENT;
1542 }
1543
1544 /**
1545  * i40e_set_mac - NDO callback to set mac address
1546  * @netdev: network interface device structure
1547  * @p: pointer to an address structure
1548  *
1549  * Returns 0 on success, negative on failure
1550  **/
1551 static int i40e_set_mac(struct net_device *netdev, void *p)
1552 {
1553         struct i40e_netdev_priv *np = netdev_priv(netdev);
1554         struct i40e_vsi *vsi = np->vsi;
1555         struct i40e_pf *pf = vsi->back;
1556         struct i40e_hw *hw = &pf->hw;
1557         struct sockaddr *addr = p;
1558
1559         if (!is_valid_ether_addr(addr->sa_data))
1560                 return -EADDRNOTAVAIL;
1561
1562         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1563                 netdev_info(netdev, "already using mac address %pM\n",
1564                             addr->sa_data);
1565                 return 0;
1566         }
1567
1568         if (test_bit(__I40E_DOWN, pf->state) ||
1569             test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
1570                 return -EADDRNOTAVAIL;
1571
1572         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1573                 netdev_info(netdev, "returning to hw mac address %pM\n",
1574                             hw->mac.addr);
1575         else
1576                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1577
1578         /* Copy the address first, so that we avoid a possible race with
1579          * .set_rx_mode().
1580          * - Remove old address from MAC filter
1581          * - Copy new address
1582          * - Add new address to MAC filter
1583          */
1584         spin_lock_bh(&vsi->mac_filter_hash_lock);
1585         i40e_del_mac_filter(vsi, netdev->dev_addr);
1586         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1587         i40e_add_mac_filter(vsi, netdev->dev_addr);
1588         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1589
1590         if (vsi->type == I40E_VSI_MAIN) {
1591                 i40e_status ret;
1592
1593                 ret = i40e_aq_mac_address_write(hw, I40E_AQC_WRITE_TYPE_LAA_WOL,
1594                                                 addr->sa_data, NULL);
1595                 if (ret)
1596                         netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
1597                                     i40e_stat_str(hw, ret),
1598                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1599         }
1600
1601         /* schedule our worker thread which will take care of
1602          * applying the new filter changes
1603          */
1604         i40e_service_event_schedule(pf);
1605         return 0;
1606 }
1607
1608 /**
1609  * i40e_config_rss_aq - Prepare for RSS using AQ commands
1610  * @vsi: vsi structure
1611  * @seed: RSS hash seed
1612  **/
1613 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
1614                               u8 *lut, u16 lut_size)
1615 {
1616         struct i40e_pf *pf = vsi->back;
1617         struct i40e_hw *hw = &pf->hw;
1618         int ret = 0;
1619
1620         if (seed) {
1621                 struct i40e_aqc_get_set_rss_key_data *seed_dw =
1622                         (struct i40e_aqc_get_set_rss_key_data *)seed;
1623                 ret = i40e_aq_set_rss_key(hw, vsi->id, seed_dw);
1624                 if (ret) {
1625                         dev_info(&pf->pdev->dev,
1626                                  "Cannot set RSS key, err %s aq_err %s\n",
1627                                  i40e_stat_str(hw, ret),
1628                                  i40e_aq_str(hw, hw->aq.asq_last_status));
1629                         return ret;
1630                 }
1631         }
1632         if (lut) {
1633                 bool pf_lut = vsi->type == I40E_VSI_MAIN;
1634
1635                 ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
1636                 if (ret) {
1637                         dev_info(&pf->pdev->dev,
1638                                  "Cannot set RSS lut, err %s aq_err %s\n",
1639                                  i40e_stat_str(hw, ret),
1640                                  i40e_aq_str(hw, hw->aq.asq_last_status));
1641                         return ret;
1642                 }
1643         }
1644         return ret;
1645 }
1646
1647 /**
1648  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
1649  * @vsi: VSI structure
1650  **/
1651 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
1652 {
1653         struct i40e_pf *pf = vsi->back;
1654         u8 seed[I40E_HKEY_ARRAY_SIZE];
1655         u8 *lut;
1656         int ret;
1657
1658         if (!(pf->hw_features & I40E_HW_RSS_AQ_CAPABLE))
1659                 return 0;
1660         if (!vsi->rss_size)
1661                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
1662                                       vsi->num_queue_pairs);
1663         if (!vsi->rss_size)
1664                 return -EINVAL;
1665         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
1666         if (!lut)
1667                 return -ENOMEM;
1668
1669         /* Use the user configured hash keys and lookup table if there is one,
1670          * otherwise use default
1671          */
1672         if (vsi->rss_lut_user)
1673                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
1674         else
1675                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
1676         if (vsi->rss_hkey_user)
1677                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
1678         else
1679                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
1680         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
1681         kfree(lut);
1682         return ret;
1683 }
1684
1685 /**
1686  * i40e_vsi_setup_queue_map_mqprio - Prepares mqprio based tc_config
1687  * @vsi: the VSI being configured,
1688  * @ctxt: VSI context structure
1689  * @enabled_tc: number of traffic classes to enable
1690  *
1691  * Prepares VSI tc_config to have queue configurations based on MQPRIO options.
1692  **/
1693 static int i40e_vsi_setup_queue_map_mqprio(struct i40e_vsi *vsi,
1694                                            struct i40e_vsi_context *ctxt,
1695                                            u8 enabled_tc)
1696 {
1697         u16 qcount = 0, max_qcount, qmap, sections = 0;
1698         int i, override_q, pow, num_qps, ret;
1699         u8 netdev_tc = 0, offset = 0;
1700
1701         if (vsi->type != I40E_VSI_MAIN)
1702                 return -EINVAL;
1703         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1704         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1705         vsi->tc_config.numtc = vsi->mqprio_qopt.qopt.num_tc;
1706         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1707         num_qps = vsi->mqprio_qopt.qopt.count[0];
1708
1709         /* find the next higher power-of-2 of num queue pairs */
1710         pow = ilog2(num_qps);
1711         if (!is_power_of_2(num_qps))
1712                 pow++;
1713         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1714                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1715
1716         /* Setup queue offset/count for all TCs for given VSI */
1717         max_qcount = vsi->mqprio_qopt.qopt.count[0];
1718         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1719                 /* See if the given TC is enabled for the given VSI */
1720                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1721                         offset = vsi->mqprio_qopt.qopt.offset[i];
1722                         qcount = vsi->mqprio_qopt.qopt.count[i];
1723                         if (qcount > max_qcount)
1724                                 max_qcount = qcount;
1725                         vsi->tc_config.tc_info[i].qoffset = offset;
1726                         vsi->tc_config.tc_info[i].qcount = qcount;
1727                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1728                 } else {
1729                         /* TC is not enabled so set the offset to
1730                          * default queue and allocate one queue
1731                          * for the given TC.
1732                          */
1733                         vsi->tc_config.tc_info[i].qoffset = 0;
1734                         vsi->tc_config.tc_info[i].qcount = 1;
1735                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1736                 }
1737         }
1738
1739         /* Set actual Tx/Rx queue pairs */
1740         vsi->num_queue_pairs = offset + qcount;
1741
1742         /* Setup queue TC[0].qmap for given VSI context */
1743         ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
1744         ctxt->info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1745         ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1746         ctxt->info.valid_sections |= cpu_to_le16(sections);
1747
1748         /* Reconfigure RSS for main VSI with max queue count */
1749         vsi->rss_size = max_qcount;
1750         ret = i40e_vsi_config_rss(vsi);
1751         if (ret) {
1752                 dev_info(&vsi->back->pdev->dev,
1753                          "Failed to reconfig rss for num_queues (%u)\n",
1754                          max_qcount);
1755                 return ret;
1756         }
1757         vsi->reconfig_rss = true;
1758         dev_dbg(&vsi->back->pdev->dev,
1759                 "Reconfigured rss with num_queues (%u)\n", max_qcount);
1760
1761         /* Find queue count available for channel VSIs and starting offset
1762          * for channel VSIs
1763          */
1764         override_q = vsi->mqprio_qopt.qopt.count[0];
1765         if (override_q && override_q < vsi->num_queue_pairs) {
1766                 vsi->cnt_q_avail = vsi->num_queue_pairs - override_q;
1767                 vsi->next_base_queue = override_q;
1768         }
1769         return 0;
1770 }
1771
1772 /**
1773  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1774  * @vsi: the VSI being setup
1775  * @ctxt: VSI context structure
1776  * @enabled_tc: Enabled TCs bitmap
1777  * @is_add: True if called before Add VSI
1778  *
1779  * Setup VSI queue mapping for enabled traffic classes.
1780  **/
1781 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1782                                      struct i40e_vsi_context *ctxt,
1783                                      u8 enabled_tc,
1784                                      bool is_add)
1785 {
1786         struct i40e_pf *pf = vsi->back;
1787         u16 sections = 0;
1788         u8 netdev_tc = 0;
1789         u16 numtc = 1;
1790         u16 qcount;
1791         u8 offset;
1792         u16 qmap;
1793         int i;
1794         u16 num_tc_qps = 0;
1795
1796         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1797         offset = 0;
1798
1799         /* Number of queues per enabled TC */
1800         num_tc_qps = vsi->alloc_queue_pairs;
1801         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1802                 /* Find numtc from enabled TC bitmap */
1803                 for (i = 0, numtc = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1804                         if (enabled_tc & BIT(i)) /* TC is enabled */
1805                                 numtc++;
1806                 }
1807                 if (!numtc) {
1808                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1809                         numtc = 1;
1810                 }
1811                 num_tc_qps = num_tc_qps / numtc;
1812                 num_tc_qps = min_t(int, num_tc_qps,
1813                                    i40e_pf_get_max_q_per_tc(pf));
1814         }
1815
1816         vsi->tc_config.numtc = numtc;
1817         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1818
1819         /* Do not allow use more TC queue pairs than MSI-X vectors exist */
1820         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1821                 num_tc_qps = min_t(int, num_tc_qps, pf->num_lan_msix);
1822
1823         /* Setup queue offset/count for all TCs for given VSI */
1824         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1825                 /* See if the given TC is enabled for the given VSI */
1826                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1827                         /* TC is enabled */
1828                         int pow, num_qps;
1829
1830                         switch (vsi->type) {
1831                         case I40E_VSI_MAIN:
1832                                 if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED |
1833                                     I40E_FLAG_FD_ATR_ENABLED)) ||
1834                                     vsi->tc_config.enabled_tc != 1) {
1835                                         qcount = min_t(int, pf->alloc_rss_size,
1836                                                        num_tc_qps);
1837                                         break;
1838                                 }
1839                                 fallthrough;
1840                         case I40E_VSI_FDIR:
1841                         case I40E_VSI_SRIOV:
1842                         case I40E_VSI_VMDQ2:
1843                         default:
1844                                 qcount = num_tc_qps;
1845                                 WARN_ON(i != 0);
1846                                 break;
1847                         }
1848                         vsi->tc_config.tc_info[i].qoffset = offset;
1849                         vsi->tc_config.tc_info[i].qcount = qcount;
1850
1851                         /* find the next higher power-of-2 of num queue pairs */
1852                         num_qps = qcount;
1853                         pow = 0;
1854                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1855                                 pow++;
1856                                 num_qps >>= 1;
1857                         }
1858
1859                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1860                         qmap =
1861                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1862                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1863
1864                         offset += qcount;
1865                 } else {
1866                         /* TC is not enabled so set the offset to
1867                          * default queue and allocate one queue
1868                          * for the given TC.
1869                          */
1870                         vsi->tc_config.tc_info[i].qoffset = 0;
1871                         vsi->tc_config.tc_info[i].qcount = 1;
1872                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1873
1874                         qmap = 0;
1875                 }
1876                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1877         }
1878
1879         /* Set actual Tx/Rx queue pairs */
1880         vsi->num_queue_pairs = offset;
1881         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1882                 if (vsi->req_queue_pairs > 0)
1883                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1884                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1885                         vsi->num_queue_pairs = pf->num_lan_msix;
1886         }
1887
1888         /* Scheduler section valid can only be set for ADD VSI */
1889         if (is_add) {
1890                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1891
1892                 ctxt->info.up_enable_bits = enabled_tc;
1893         }
1894         if (vsi->type == I40E_VSI_SRIOV) {
1895                 ctxt->info.mapping_flags |=
1896                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1897                 for (i = 0; i < vsi->num_queue_pairs; i++)
1898                         ctxt->info.queue_mapping[i] =
1899                                                cpu_to_le16(vsi->base_queue + i);
1900         } else {
1901                 ctxt->info.mapping_flags |=
1902                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1903                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1904         }
1905         ctxt->info.valid_sections |= cpu_to_le16(sections);
1906 }
1907
1908 /**
1909  * i40e_addr_sync - Callback for dev_(mc|uc)_sync to add address
1910  * @netdev: the netdevice
1911  * @addr: address to add
1912  *
1913  * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
1914  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
1915  */
1916 static int i40e_addr_sync(struct net_device *netdev, const u8 *addr)
1917 {
1918         struct i40e_netdev_priv *np = netdev_priv(netdev);
1919         struct i40e_vsi *vsi = np->vsi;
1920
1921         if (i40e_add_mac_filter(vsi, addr))
1922                 return 0;
1923         else
1924                 return -ENOMEM;
1925 }
1926
1927 /**
1928  * i40e_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
1929  * @netdev: the netdevice
1930  * @addr: address to add
1931  *
1932  * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call
1933  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
1934  */
1935 static int i40e_addr_unsync(struct net_device *netdev, const u8 *addr)
1936 {
1937         struct i40e_netdev_priv *np = netdev_priv(netdev);
1938         struct i40e_vsi *vsi = np->vsi;
1939
1940         /* Under some circumstances, we might receive a request to delete
1941          * our own device address from our uc list. Because we store the
1942          * device address in the VSI's MAC/VLAN filter list, we need to ignore
1943          * such requests and not delete our device address from this list.
1944          */
1945         if (ether_addr_equal(addr, netdev->dev_addr))
1946                 return 0;
1947
1948         i40e_del_mac_filter(vsi, addr);
1949
1950         return 0;
1951 }
1952
1953 /**
1954  * i40e_set_rx_mode - NDO callback to set the netdev filters
1955  * @netdev: network interface device structure
1956  **/
1957 static void i40e_set_rx_mode(struct net_device *netdev)
1958 {
1959         struct i40e_netdev_priv *np = netdev_priv(netdev);
1960         struct i40e_vsi *vsi = np->vsi;
1961
1962         spin_lock_bh(&vsi->mac_filter_hash_lock);
1963
1964         __dev_uc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
1965         __dev_mc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
1966
1967         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1968
1969         /* check for other flag changes */
1970         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1971                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1972                 set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
1973         }
1974 }
1975
1976 /**
1977  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1978  * @vsi: Pointer to VSI struct
1979  * @from: Pointer to list which contains MAC filter entries - changes to
1980  *        those entries needs to be undone.
1981  *
1982  * MAC filter entries from this list were slated for deletion.
1983  **/
1984 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1985                                          struct hlist_head *from)
1986 {
1987         struct i40e_mac_filter *f;
1988         struct hlist_node *h;
1989
1990         hlist_for_each_entry_safe(f, h, from, hlist) {
1991                 u64 key = i40e_addr_to_hkey(f->macaddr);
1992
1993                 /* Move the element back into MAC filter list*/
1994                 hlist_del(&f->hlist);
1995                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1996         }
1997 }
1998
1999 /**
2000  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
2001  * @vsi: Pointer to vsi struct
2002  * @from: Pointer to list which contains MAC filter entries - changes to
2003  *        those entries needs to be undone.
2004  *
2005  * MAC filter entries from this list were slated for addition.
2006  **/
2007 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi,
2008                                          struct hlist_head *from)
2009 {
2010         struct i40e_new_mac_filter *new;
2011         struct hlist_node *h;
2012
2013         hlist_for_each_entry_safe(new, h, from, hlist) {
2014                 /* We can simply free the wrapper structure */
2015                 hlist_del(&new->hlist);
2016                 kfree(new);
2017         }
2018 }
2019
2020 /**
2021  * i40e_next_entry - Get the next non-broadcast filter from a list
2022  * @next: pointer to filter in list
2023  *
2024  * Returns the next non-broadcast filter in the list. Required so that we
2025  * ignore broadcast filters within the list, since these are not handled via
2026  * the normal firmware update path.
2027  */
2028 static
2029 struct i40e_new_mac_filter *i40e_next_filter(struct i40e_new_mac_filter *next)
2030 {
2031         hlist_for_each_entry_continue(next, hlist) {
2032                 if (!is_broadcast_ether_addr(next->f->macaddr))
2033                         return next;
2034         }
2035
2036         return NULL;
2037 }
2038
2039 /**
2040  * i40e_update_filter_state - Update filter state based on return data
2041  * from firmware
2042  * @count: Number of filters added
2043  * @add_list: return data from fw
2044  * @add_head: pointer to first filter in current batch
2045  *
2046  * MAC filter entries from list were slated to be added to device. Returns
2047  * number of successful filters. Note that 0 does NOT mean success!
2048  **/
2049 static int
2050 i40e_update_filter_state(int count,
2051                          struct i40e_aqc_add_macvlan_element_data *add_list,
2052                          struct i40e_new_mac_filter *add_head)
2053 {
2054         int retval = 0;
2055         int i;
2056
2057         for (i = 0; i < count; i++) {
2058                 /* Always check status of each filter. We don't need to check
2059                  * the firmware return status because we pre-set the filter
2060                  * status to I40E_AQC_MM_ERR_NO_RES when sending the filter
2061                  * request to the adminq. Thus, if it no longer matches then
2062                  * we know the filter is active.
2063                  */
2064                 if (add_list[i].match_method == I40E_AQC_MM_ERR_NO_RES) {
2065                         add_head->state = I40E_FILTER_FAILED;
2066                 } else {
2067                         add_head->state = I40E_FILTER_ACTIVE;
2068                         retval++;
2069                 }
2070
2071                 add_head = i40e_next_filter(add_head);
2072                 if (!add_head)
2073                         break;
2074         }
2075
2076         return retval;
2077 }
2078
2079 /**
2080  * i40e_aqc_del_filters - Request firmware to delete a set of filters
2081  * @vsi: ptr to the VSI
2082  * @vsi_name: name to display in messages
2083  * @list: the list of filters to send to firmware
2084  * @num_del: the number of filters to delete
2085  * @retval: Set to -EIO on failure to delete
2086  *
2087  * Send a request to firmware via AdminQ to delete a set of filters. Uses
2088  * *retval instead of a return value so that success does not force ret_val to
2089  * be set to 0. This ensures that a sequence of calls to this function
2090  * preserve the previous value of *retval on successful delete.
2091  */
2092 static
2093 void i40e_aqc_del_filters(struct i40e_vsi *vsi, const char *vsi_name,
2094                           struct i40e_aqc_remove_macvlan_element_data *list,
2095                           int num_del, int *retval)
2096 {
2097         struct i40e_hw *hw = &vsi->back->hw;
2098         i40e_status aq_ret;
2099         int aq_err;
2100
2101         aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid, list, num_del, NULL);
2102         aq_err = hw->aq.asq_last_status;
2103
2104         /* Explicitly ignore and do not report when firmware returns ENOENT */
2105         if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
2106                 *retval = -EIO;
2107                 dev_info(&vsi->back->pdev->dev,
2108                          "ignoring delete macvlan error on %s, err %s, aq_err %s\n",
2109                          vsi_name, i40e_stat_str(hw, aq_ret),
2110                          i40e_aq_str(hw, aq_err));
2111         }
2112 }
2113
2114 /**
2115  * i40e_aqc_add_filters - Request firmware to add a set of filters
2116  * @vsi: ptr to the VSI
2117  * @vsi_name: name to display in messages
2118  * @list: the list of filters to send to firmware
2119  * @add_head: Position in the add hlist
2120  * @num_add: the number of filters to add
2121  *
2122  * Send a request to firmware via AdminQ to add a chunk of filters. Will set
2123  * __I40E_VSI_OVERFLOW_PROMISC bit in vsi->state if the firmware has run out of
2124  * space for more filters.
2125  */
2126 static
2127 void i40e_aqc_add_filters(struct i40e_vsi *vsi, const char *vsi_name,
2128                           struct i40e_aqc_add_macvlan_element_data *list,
2129                           struct i40e_new_mac_filter *add_head,
2130                           int num_add)
2131 {
2132         struct i40e_hw *hw = &vsi->back->hw;
2133         int aq_err, fcnt;
2134
2135         i40e_aq_add_macvlan(hw, vsi->seid, list, num_add, NULL);
2136         aq_err = hw->aq.asq_last_status;
2137         fcnt = i40e_update_filter_state(num_add, list, add_head);
2138
2139         if (fcnt != num_add) {
2140                 if (vsi->type == I40E_VSI_MAIN) {
2141                         set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2142                         dev_warn(&vsi->back->pdev->dev,
2143                                  "Error %s adding RX filters on %s, promiscuous mode forced on\n",
2144                                  i40e_aq_str(hw, aq_err), vsi_name);
2145                 } else if (vsi->type == I40E_VSI_SRIOV ||
2146                            vsi->type == I40E_VSI_VMDQ1 ||
2147                            vsi->type == I40E_VSI_VMDQ2) {
2148                         dev_warn(&vsi->back->pdev->dev,
2149                                  "Error %s adding RX filters on %s, please set promiscuous on manually for %s\n",
2150                                  i40e_aq_str(hw, aq_err), vsi_name, vsi_name);
2151                 } else {
2152                         dev_warn(&vsi->back->pdev->dev,
2153                                  "Error %s adding RX filters on %s, incorrect VSI type: %i.\n",
2154                                  i40e_aq_str(hw, aq_err), vsi_name, vsi->type);
2155                 }
2156         }
2157 }
2158
2159 /**
2160  * i40e_aqc_broadcast_filter - Set promiscuous broadcast flags
2161  * @vsi: pointer to the VSI
2162  * @vsi_name: the VSI name
2163  * @f: filter data
2164  *
2165  * This function sets or clears the promiscuous broadcast flags for VLAN
2166  * filters in order to properly receive broadcast frames. Assumes that only
2167  * broadcast filters are passed.
2168  *
2169  * Returns status indicating success or failure;
2170  **/
2171 static i40e_status
2172 i40e_aqc_broadcast_filter(struct i40e_vsi *vsi, const char *vsi_name,
2173                           struct i40e_mac_filter *f)
2174 {
2175         bool enable = f->state == I40E_FILTER_NEW;
2176         struct i40e_hw *hw = &vsi->back->hw;
2177         i40e_status aq_ret;
2178
2179         if (f->vlan == I40E_VLAN_ANY) {
2180                 aq_ret = i40e_aq_set_vsi_broadcast(hw,
2181                                                    vsi->seid,
2182                                                    enable,
2183                                                    NULL);
2184         } else {
2185                 aq_ret = i40e_aq_set_vsi_bc_promisc_on_vlan(hw,
2186                                                             vsi->seid,
2187                                                             enable,
2188                                                             f->vlan,
2189                                                             NULL);
2190         }
2191
2192         if (aq_ret) {
2193                 set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2194                 dev_warn(&vsi->back->pdev->dev,
2195                          "Error %s, forcing overflow promiscuous on %s\n",
2196                          i40e_aq_str(hw, hw->aq.asq_last_status),
2197                          vsi_name);
2198         }
2199
2200         return aq_ret;
2201 }
2202
2203 /**
2204  * i40e_set_promiscuous - set promiscuous mode
2205  * @pf: board private structure
2206  * @promisc: promisc on or off
2207  *
2208  * There are different ways of setting promiscuous mode on a PF depending on
2209  * what state/environment we're in.  This identifies and sets it appropriately.
2210  * Returns 0 on success.
2211  **/
2212 static int i40e_set_promiscuous(struct i40e_pf *pf, bool promisc)
2213 {
2214         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
2215         struct i40e_hw *hw = &pf->hw;
2216         i40e_status aq_ret;
2217
2218         if (vsi->type == I40E_VSI_MAIN &&
2219             pf->lan_veb != I40E_NO_VEB &&
2220             !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2221                 /* set defport ON for Main VSI instead of true promisc
2222                  * this way we will get all unicast/multicast and VLAN
2223                  * promisc behavior but will not get VF or VMDq traffic
2224                  * replicated on the Main VSI.
2225                  */
2226                 if (promisc)
2227                         aq_ret = i40e_aq_set_default_vsi(hw,
2228                                                          vsi->seid,
2229                                                          NULL);
2230                 else
2231                         aq_ret = i40e_aq_clear_default_vsi(hw,
2232                                                            vsi->seid,
2233                                                            NULL);
2234                 if (aq_ret) {
2235                         dev_info(&pf->pdev->dev,
2236                                  "Set default VSI failed, err %s, aq_err %s\n",
2237                                  i40e_stat_str(hw, aq_ret),
2238                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2239                 }
2240         } else {
2241                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2242                                                   hw,
2243                                                   vsi->seid,
2244                                                   promisc, NULL,
2245                                                   true);
2246                 if (aq_ret) {
2247                         dev_info(&pf->pdev->dev,
2248                                  "set unicast promisc failed, err %s, aq_err %s\n",
2249                                  i40e_stat_str(hw, aq_ret),
2250                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2251                 }
2252                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2253                                                   hw,
2254                                                   vsi->seid,
2255                                                   promisc, NULL);
2256                 if (aq_ret) {
2257                         dev_info(&pf->pdev->dev,
2258                                  "set multicast promisc failed, err %s, aq_err %s\n",
2259                                  i40e_stat_str(hw, aq_ret),
2260                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2261                 }
2262         }
2263
2264         if (!aq_ret)
2265                 pf->cur_promisc = promisc;
2266
2267         return aq_ret;
2268 }
2269
2270 /**
2271  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
2272  * @vsi: ptr to the VSI
2273  *
2274  * Push any outstanding VSI filter changes through the AdminQ.
2275  *
2276  * Returns 0 or error value
2277  **/
2278 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
2279 {
2280         struct hlist_head tmp_add_list, tmp_del_list;
2281         struct i40e_mac_filter *f;
2282         struct i40e_new_mac_filter *new, *add_head = NULL;
2283         struct i40e_hw *hw = &vsi->back->hw;
2284         bool old_overflow, new_overflow;
2285         unsigned int failed_filters = 0;
2286         unsigned int vlan_filters = 0;
2287         char vsi_name[16] = "PF";
2288         int filter_list_len = 0;
2289         i40e_status aq_ret = 0;
2290         u32 changed_flags = 0;
2291         struct hlist_node *h;
2292         struct i40e_pf *pf;
2293         int num_add = 0;
2294         int num_del = 0;
2295         int retval = 0;
2296         u16 cmd_flags;
2297         int list_size;
2298         int bkt;
2299
2300         /* empty array typed pointers, kcalloc later */
2301         struct i40e_aqc_add_macvlan_element_data *add_list;
2302         struct i40e_aqc_remove_macvlan_element_data *del_list;
2303
2304         while (test_and_set_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state))
2305                 usleep_range(1000, 2000);
2306         pf = vsi->back;
2307
2308         old_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2309
2310         if (vsi->netdev) {
2311                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
2312                 vsi->current_netdev_flags = vsi->netdev->flags;
2313         }
2314
2315         INIT_HLIST_HEAD(&tmp_add_list);
2316         INIT_HLIST_HEAD(&tmp_del_list);
2317
2318         if (vsi->type == I40E_VSI_SRIOV)
2319                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
2320         else if (vsi->type != I40E_VSI_MAIN)
2321                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
2322
2323         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
2324                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
2325
2326                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2327                 /* Create a list of filters to delete. */
2328                 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2329                         if (f->state == I40E_FILTER_REMOVE) {
2330                                 /* Move the element into temporary del_list */
2331                                 hash_del(&f->hlist);
2332                                 hlist_add_head(&f->hlist, &tmp_del_list);
2333
2334                                 /* Avoid counting removed filters */
2335                                 continue;
2336                         }
2337                         if (f->state == I40E_FILTER_NEW) {
2338                                 /* Create a temporary i40e_new_mac_filter */
2339                                 new = kzalloc(sizeof(*new), GFP_ATOMIC);
2340                                 if (!new)
2341                                         goto err_no_memory_locked;
2342
2343                                 /* Store pointer to the real filter */
2344                                 new->f = f;
2345                                 new->state = f->state;
2346
2347                                 /* Add it to the hash list */
2348                                 hlist_add_head(&new->hlist, &tmp_add_list);
2349                         }
2350
2351                         /* Count the number of active (current and new) VLAN
2352                          * filters we have now. Does not count filters which
2353                          * are marked for deletion.
2354                          */
2355                         if (f->vlan > 0)
2356                                 vlan_filters++;
2357                 }
2358
2359                 retval = i40e_correct_mac_vlan_filters(vsi,
2360                                                        &tmp_add_list,
2361                                                        &tmp_del_list,
2362                                                        vlan_filters);
2363                 if (retval)
2364                         goto err_no_memory_locked;
2365
2366                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2367         }
2368
2369         /* Now process 'del_list' outside the lock */
2370         if (!hlist_empty(&tmp_del_list)) {
2371                 filter_list_len = hw->aq.asq_buf_size /
2372                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2373                 list_size = filter_list_len *
2374                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2375                 del_list = kzalloc(list_size, GFP_ATOMIC);
2376                 if (!del_list)
2377                         goto err_no_memory;
2378
2379                 hlist_for_each_entry_safe(f, h, &tmp_del_list, hlist) {
2380                         cmd_flags = 0;
2381
2382                         /* handle broadcast filters by updating the broadcast
2383                          * promiscuous flag and release filter list.
2384                          */
2385                         if (is_broadcast_ether_addr(f->macaddr)) {
2386                                 i40e_aqc_broadcast_filter(vsi, vsi_name, f);
2387
2388                                 hlist_del(&f->hlist);
2389                                 kfree(f);
2390                                 continue;
2391                         }
2392
2393                         /* add to delete list */
2394                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
2395                         if (f->vlan == I40E_VLAN_ANY) {
2396                                 del_list[num_del].vlan_tag = 0;
2397                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
2398                         } else {
2399                                 del_list[num_del].vlan_tag =
2400                                         cpu_to_le16((u16)(f->vlan));
2401                         }
2402
2403                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
2404                         del_list[num_del].flags = cmd_flags;
2405                         num_del++;
2406
2407                         /* flush a full buffer */
2408                         if (num_del == filter_list_len) {
2409                                 i40e_aqc_del_filters(vsi, vsi_name, del_list,
2410                                                      num_del, &retval);
2411                                 memset(del_list, 0, list_size);
2412                                 num_del = 0;
2413                         }
2414                         /* Release memory for MAC filter entries which were
2415                          * synced up with HW.
2416                          */
2417                         hlist_del(&f->hlist);
2418                         kfree(f);
2419                 }
2420
2421                 if (num_del) {
2422                         i40e_aqc_del_filters(vsi, vsi_name, del_list,
2423                                              num_del, &retval);
2424                 }
2425
2426                 kfree(del_list);
2427                 del_list = NULL;
2428         }
2429
2430         if (!hlist_empty(&tmp_add_list)) {
2431                 /* Do all the adds now. */
2432                 filter_list_len = hw->aq.asq_buf_size /
2433                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2434                 list_size = filter_list_len *
2435                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2436                 add_list = kzalloc(list_size, GFP_ATOMIC);
2437                 if (!add_list)
2438                         goto err_no_memory;
2439
2440                 num_add = 0;
2441                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2442                         /* handle broadcast filters by updating the broadcast
2443                          * promiscuous flag instead of adding a MAC filter.
2444                          */
2445                         if (is_broadcast_ether_addr(new->f->macaddr)) {
2446                                 if (i40e_aqc_broadcast_filter(vsi, vsi_name,
2447                                                               new->f))
2448                                         new->state = I40E_FILTER_FAILED;
2449                                 else
2450                                         new->state = I40E_FILTER_ACTIVE;
2451                                 continue;
2452                         }
2453
2454                         /* add to add array */
2455                         if (num_add == 0)
2456                                 add_head = new;
2457                         cmd_flags = 0;
2458                         ether_addr_copy(add_list[num_add].mac_addr,
2459                                         new->f->macaddr);
2460                         if (new->f->vlan == I40E_VLAN_ANY) {
2461                                 add_list[num_add].vlan_tag = 0;
2462                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
2463                         } else {
2464                                 add_list[num_add].vlan_tag =
2465                                         cpu_to_le16((u16)(new->f->vlan));
2466                         }
2467                         add_list[num_add].queue_number = 0;
2468                         /* set invalid match method for later detection */
2469                         add_list[num_add].match_method = I40E_AQC_MM_ERR_NO_RES;
2470                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2471                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2472                         num_add++;
2473
2474                         /* flush a full buffer */
2475                         if (num_add == filter_list_len) {
2476                                 i40e_aqc_add_filters(vsi, vsi_name, add_list,
2477                                                      add_head, num_add);
2478                                 memset(add_list, 0, list_size);
2479                                 num_add = 0;
2480                         }
2481                 }
2482                 if (num_add) {
2483                         i40e_aqc_add_filters(vsi, vsi_name, add_list, add_head,
2484                                              num_add);
2485                 }
2486                 /* Now move all of the filters from the temp add list back to
2487                  * the VSI's list.
2488                  */
2489                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2490                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2491                         /* Only update the state if we're still NEW */
2492                         if (new->f->state == I40E_FILTER_NEW)
2493                                 new->f->state = new->state;
2494                         hlist_del(&new->hlist);
2495                         kfree(new);
2496                 }
2497                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2498                 kfree(add_list);
2499                 add_list = NULL;
2500         }
2501
2502         /* Determine the number of active and failed filters. */
2503         spin_lock_bh(&vsi->mac_filter_hash_lock);
2504         vsi->active_filters = 0;
2505         hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
2506                 if (f->state == I40E_FILTER_ACTIVE)
2507                         vsi->active_filters++;
2508                 else if (f->state == I40E_FILTER_FAILED)
2509                         failed_filters++;
2510         }
2511         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2512
2513         /* Check if we are able to exit overflow promiscuous mode. We can
2514          * safely exit if we didn't just enter, we no longer have any failed
2515          * filters, and we have reduced filters below the threshold value.
2516          */
2517         if (old_overflow && !failed_filters &&
2518             vsi->active_filters < vsi->promisc_threshold) {
2519                 dev_info(&pf->pdev->dev,
2520                          "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
2521                          vsi_name);
2522                 clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2523                 vsi->promisc_threshold = 0;
2524         }
2525
2526         /* if the VF is not trusted do not do promisc */
2527         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2528                 clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2529                 goto out;
2530         }
2531
2532         new_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2533
2534         /* If we are entering overflow promiscuous, we need to calculate a new
2535          * threshold for when we are safe to exit
2536          */
2537         if (!old_overflow && new_overflow)
2538                 vsi->promisc_threshold = (vsi->active_filters * 3) / 4;
2539
2540         /* check for changes in promiscuous modes */
2541         if (changed_flags & IFF_ALLMULTI) {
2542                 bool cur_multipromisc;
2543
2544                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2545                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2546                                                                vsi->seid,
2547                                                                cur_multipromisc,
2548                                                                NULL);
2549                 if (aq_ret) {
2550                         retval = i40e_aq_rc_to_posix(aq_ret,
2551                                                      hw->aq.asq_last_status);
2552                         dev_info(&pf->pdev->dev,
2553                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2554                                  vsi_name,
2555                                  i40e_stat_str(hw, aq_ret),
2556                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2557                 } else {
2558                         dev_info(&pf->pdev->dev, "%s is %s allmulti mode.\n",
2559                                  vsi->netdev->name,
2560                                  cur_multipromisc ? "entering" : "leaving");
2561                 }
2562         }
2563
2564         if ((changed_flags & IFF_PROMISC) || old_overflow != new_overflow) {
2565                 bool cur_promisc;
2566
2567                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2568                                new_overflow);
2569                 aq_ret = i40e_set_promiscuous(pf, cur_promisc);
2570                 if (aq_ret) {
2571                         retval = i40e_aq_rc_to_posix(aq_ret,
2572                                                      hw->aq.asq_last_status);
2573                         dev_info(&pf->pdev->dev,
2574                                  "Setting promiscuous %s failed on %s, err %s aq_err %s\n",
2575                                  cur_promisc ? "on" : "off",
2576                                  vsi_name,
2577                                  i40e_stat_str(hw, aq_ret),
2578                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2579                 }
2580         }
2581 out:
2582         /* if something went wrong then set the changed flag so we try again */
2583         if (retval)
2584                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2585
2586         clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
2587         return retval;
2588
2589 err_no_memory:
2590         /* Restore elements on the temporary add and delete lists */
2591         spin_lock_bh(&vsi->mac_filter_hash_lock);
2592 err_no_memory_locked:
2593         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
2594         i40e_undo_add_filter_entries(vsi, &tmp_add_list);
2595         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2596
2597         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2598         clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
2599         return -ENOMEM;
2600 }
2601
2602 /**
2603  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2604  * @pf: board private structure
2605  **/
2606 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2607 {
2608         int v;
2609
2610         if (!pf)
2611                 return;
2612         if (!test_and_clear_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state))
2613                 return;
2614         if (test_and_set_bit(__I40E_VF_DISABLE, pf->state)) {
2615                 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
2616                 return;
2617         }
2618
2619         for (v = 0; v < pf->num_alloc_vsi; v++) {
2620                 if (pf->vsi[v] &&
2621                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2622                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2623
2624                         if (ret) {
2625                                 /* come back and try again later */
2626                                 set_bit(__I40E_MACVLAN_SYNC_PENDING,
2627                                         pf->state);
2628                                 break;
2629                         }
2630                 }
2631         }
2632         clear_bit(__I40E_VF_DISABLE, pf->state);
2633 }
2634
2635 /**
2636  * i40e_max_xdp_frame_size - returns the maximum allowed frame size for XDP
2637  * @vsi: the vsi
2638  **/
2639 static int i40e_max_xdp_frame_size(struct i40e_vsi *vsi)
2640 {
2641         if (PAGE_SIZE >= 8192 || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
2642                 return I40E_RXBUFFER_2048;
2643         else
2644                 return I40E_RXBUFFER_3072;
2645 }
2646
2647 /**
2648  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2649  * @netdev: network interface device structure
2650  * @new_mtu: new value for maximum frame size
2651  *
2652  * Returns 0 on success, negative on failure
2653  **/
2654 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2655 {
2656         struct i40e_netdev_priv *np = netdev_priv(netdev);
2657         struct i40e_vsi *vsi = np->vsi;
2658         struct i40e_pf *pf = vsi->back;
2659
2660         if (i40e_enabled_xdp_vsi(vsi)) {
2661                 int frame_size = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2662
2663                 if (frame_size > i40e_max_xdp_frame_size(vsi))
2664                         return -EINVAL;
2665         }
2666
2667         netdev_dbg(netdev, "changing MTU from %d to %d\n",
2668                    netdev->mtu, new_mtu);
2669         netdev->mtu = new_mtu;
2670         if (netif_running(netdev))
2671                 i40e_vsi_reinit_locked(vsi);
2672         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
2673         set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
2674         return 0;
2675 }
2676
2677 /**
2678  * i40e_ioctl - Access the hwtstamp interface
2679  * @netdev: network interface device structure
2680  * @ifr: interface request data
2681  * @cmd: ioctl command
2682  **/
2683 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2684 {
2685         struct i40e_netdev_priv *np = netdev_priv(netdev);
2686         struct i40e_pf *pf = np->vsi->back;
2687
2688         switch (cmd) {
2689         case SIOCGHWTSTAMP:
2690                 return i40e_ptp_get_ts_config(pf, ifr);
2691         case SIOCSHWTSTAMP:
2692                 return i40e_ptp_set_ts_config(pf, ifr);
2693         default:
2694                 return -EOPNOTSUPP;
2695         }
2696 }
2697
2698 /**
2699  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2700  * @vsi: the vsi being adjusted
2701  **/
2702 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2703 {
2704         struct i40e_vsi_context ctxt;
2705         i40e_status ret;
2706
2707         /* Don't modify stripping options if a port VLAN is active */
2708         if (vsi->info.pvid)
2709                 return;
2710
2711         if ((vsi->info.valid_sections &
2712              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2713             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2714                 return;  /* already enabled */
2715
2716         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2717         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2718                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2719
2720         ctxt.seid = vsi->seid;
2721         ctxt.info = vsi->info;
2722         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2723         if (ret) {
2724                 dev_info(&vsi->back->pdev->dev,
2725                          "update vlan stripping failed, err %s aq_err %s\n",
2726                          i40e_stat_str(&vsi->back->hw, ret),
2727                          i40e_aq_str(&vsi->back->hw,
2728                                      vsi->back->hw.aq.asq_last_status));
2729         }
2730 }
2731
2732 /**
2733  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2734  * @vsi: the vsi being adjusted
2735  **/
2736 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2737 {
2738         struct i40e_vsi_context ctxt;
2739         i40e_status ret;
2740
2741         /* Don't modify stripping options if a port VLAN is active */
2742         if (vsi->info.pvid)
2743                 return;
2744
2745         if ((vsi->info.valid_sections &
2746              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2747             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2748              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2749                 return;  /* already disabled */
2750
2751         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2752         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2753                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2754
2755         ctxt.seid = vsi->seid;
2756         ctxt.info = vsi->info;
2757         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2758         if (ret) {
2759                 dev_info(&vsi->back->pdev->dev,
2760                          "update vlan stripping failed, err %s aq_err %s\n",
2761                          i40e_stat_str(&vsi->back->hw, ret),
2762                          i40e_aq_str(&vsi->back->hw,
2763                                      vsi->back->hw.aq.asq_last_status));
2764         }
2765 }
2766
2767 /**
2768  * i40e_add_vlan_all_mac - Add a MAC/VLAN filter for each existing MAC address
2769  * @vsi: the vsi being configured
2770  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2771  *
2772  * This is a helper function for adding a new MAC/VLAN filter with the
2773  * specified VLAN for each existing MAC address already in the hash table.
2774  * This function does *not* perform any accounting to update filters based on
2775  * VLAN mode.
2776  *
2777  * NOTE: this function expects to be called while under the
2778  * mac_filter_hash_lock
2779  **/
2780 int i40e_add_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2781 {
2782         struct i40e_mac_filter *f, *add_f;
2783         struct hlist_node *h;
2784         int bkt;
2785
2786         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2787                 if (f->state == I40E_FILTER_REMOVE)
2788                         continue;
2789                 add_f = i40e_add_filter(vsi, f->macaddr, vid);
2790                 if (!add_f) {
2791                         dev_info(&vsi->back->pdev->dev,
2792                                  "Could not add vlan filter %d for %pM\n",
2793                                  vid, f->macaddr);
2794                         return -ENOMEM;
2795                 }
2796         }
2797
2798         return 0;
2799 }
2800
2801 /**
2802  * i40e_vsi_add_vlan - Add VSI membership for given VLAN
2803  * @vsi: the VSI being configured
2804  * @vid: VLAN id to be added
2805  **/
2806 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, u16 vid)
2807 {
2808         int err;
2809
2810         if (vsi->info.pvid)
2811                 return -EINVAL;
2812
2813         /* The network stack will attempt to add VID=0, with the intention to
2814          * receive priority tagged packets with a VLAN of 0. Our HW receives
2815          * these packets by default when configured to receive untagged
2816          * packets, so we don't need to add a filter for this case.
2817          * Additionally, HW interprets adding a VID=0 filter as meaning to
2818          * receive *only* tagged traffic and stops receiving untagged traffic.
2819          * Thus, we do not want to actually add a filter for VID=0
2820          */
2821         if (!vid)
2822                 return 0;
2823
2824         /* Locked once because all functions invoked below iterates list*/
2825         spin_lock_bh(&vsi->mac_filter_hash_lock);
2826         err = i40e_add_vlan_all_mac(vsi, vid);
2827         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2828         if (err)
2829                 return err;
2830
2831         /* schedule our worker thread which will take care of
2832          * applying the new filter changes
2833          */
2834         i40e_service_event_schedule(vsi->back);
2835         return 0;
2836 }
2837
2838 /**
2839  * i40e_rm_vlan_all_mac - Remove MAC/VLAN pair for all MAC with the given VLAN
2840  * @vsi: the vsi being configured
2841  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2842  *
2843  * This function should be used to remove all VLAN filters which match the
2844  * given VID. It does not schedule the service event and does not take the
2845  * mac_filter_hash_lock so it may be combined with other operations under
2846  * a single invocation of the mac_filter_hash_lock.
2847  *
2848  * NOTE: this function expects to be called while under the
2849  * mac_filter_hash_lock
2850  */
2851 void i40e_rm_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2852 {
2853         struct i40e_mac_filter *f;
2854         struct hlist_node *h;
2855         int bkt;
2856
2857         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2858                 if (f->vlan == vid)
2859                         __i40e_del_filter(vsi, f);
2860         }
2861 }
2862
2863 /**
2864  * i40e_vsi_kill_vlan - Remove VSI membership for given VLAN
2865  * @vsi: the VSI being configured
2866  * @vid: VLAN id to be removed
2867  **/
2868 void i40e_vsi_kill_vlan(struct i40e_vsi *vsi, u16 vid)
2869 {
2870         if (!vid || vsi->info.pvid)
2871                 return;
2872
2873         spin_lock_bh(&vsi->mac_filter_hash_lock);
2874         i40e_rm_vlan_all_mac(vsi, vid);
2875         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2876
2877         /* schedule our worker thread which will take care of
2878          * applying the new filter changes
2879          */
2880         i40e_service_event_schedule(vsi->back);
2881 }
2882
2883 /**
2884  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2885  * @netdev: network interface to be adjusted
2886  * @proto: unused protocol value
2887  * @vid: vlan id to be added
2888  *
2889  * net_device_ops implementation for adding vlan ids
2890  **/
2891 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2892                                 __always_unused __be16 proto, u16 vid)
2893 {
2894         struct i40e_netdev_priv *np = netdev_priv(netdev);
2895         struct i40e_vsi *vsi = np->vsi;
2896         int ret = 0;
2897
2898         if (vid >= VLAN_N_VID)
2899                 return -EINVAL;
2900
2901         ret = i40e_vsi_add_vlan(vsi, vid);
2902         if (!ret)
2903                 set_bit(vid, vsi->active_vlans);
2904
2905         return ret;
2906 }
2907
2908 /**
2909  * i40e_vlan_rx_add_vid_up - Add a vlan id filter to HW offload in UP path
2910  * @netdev: network interface to be adjusted
2911  * @proto: unused protocol value
2912  * @vid: vlan id to be added
2913  **/
2914 static void i40e_vlan_rx_add_vid_up(struct net_device *netdev,
2915                                     __always_unused __be16 proto, u16 vid)
2916 {
2917         struct i40e_netdev_priv *np = netdev_priv(netdev);
2918         struct i40e_vsi *vsi = np->vsi;
2919
2920         if (vid >= VLAN_N_VID)
2921                 return;
2922         set_bit(vid, vsi->active_vlans);
2923 }
2924
2925 /**
2926  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2927  * @netdev: network interface to be adjusted
2928  * @proto: unused protocol value
2929  * @vid: vlan id to be removed
2930  *
2931  * net_device_ops implementation for removing vlan ids
2932  **/
2933 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2934                                  __always_unused __be16 proto, u16 vid)
2935 {
2936         struct i40e_netdev_priv *np = netdev_priv(netdev);
2937         struct i40e_vsi *vsi = np->vsi;
2938
2939         /* return code is ignored as there is nothing a user
2940          * can do about failure to remove and a log message was
2941          * already printed from the other function
2942          */
2943         i40e_vsi_kill_vlan(vsi, vid);
2944
2945         clear_bit(vid, vsi->active_vlans);
2946
2947         return 0;
2948 }
2949
2950 /**
2951  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2952  * @vsi: the vsi being brought back up
2953  **/
2954 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2955 {
2956         u16 vid;
2957
2958         if (!vsi->netdev)
2959                 return;
2960
2961         if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
2962                 i40e_vlan_stripping_enable(vsi);
2963         else
2964                 i40e_vlan_stripping_disable(vsi);
2965
2966         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2967                 i40e_vlan_rx_add_vid_up(vsi->netdev, htons(ETH_P_8021Q),
2968                                         vid);
2969 }
2970
2971 /**
2972  * i40e_vsi_add_pvid - Add pvid for the VSI
2973  * @vsi: the vsi being adjusted
2974  * @vid: the vlan id to set as a PVID
2975  **/
2976 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2977 {
2978         struct i40e_vsi_context ctxt;
2979         i40e_status ret;
2980
2981         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2982         vsi->info.pvid = cpu_to_le16(vid);
2983         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2984                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2985                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2986
2987         ctxt.seid = vsi->seid;
2988         ctxt.info = vsi->info;
2989         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2990         if (ret) {
2991                 dev_info(&vsi->back->pdev->dev,
2992                          "add pvid failed, err %s aq_err %s\n",
2993                          i40e_stat_str(&vsi->back->hw, ret),
2994                          i40e_aq_str(&vsi->back->hw,
2995                                      vsi->back->hw.aq.asq_last_status));
2996                 return -ENOENT;
2997         }
2998
2999         return 0;
3000 }
3001
3002 /**
3003  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
3004  * @vsi: the vsi being adjusted
3005  *
3006  * Just use the vlan_rx_register() service to put it back to normal
3007  **/
3008 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
3009 {
3010         vsi->info.pvid = 0;
3011
3012         i40e_vlan_stripping_disable(vsi);
3013 }
3014
3015 /**
3016  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
3017  * @vsi: ptr to the VSI
3018  *
3019  * If this function returns with an error, then it's possible one or
3020  * more of the rings is populated (while the rest are not).  It is the
3021  * callers duty to clean those orphaned rings.
3022  *
3023  * Return 0 on success, negative on failure
3024  **/
3025 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
3026 {
3027         int i, err = 0;
3028
3029         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3030                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
3031
3032         if (!i40e_enabled_xdp_vsi(vsi))
3033                 return err;
3034
3035         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3036                 err = i40e_setup_tx_descriptors(vsi->xdp_rings[i]);
3037
3038         return err;
3039 }
3040
3041 /**
3042  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
3043  * @vsi: ptr to the VSI
3044  *
3045  * Free VSI's transmit software resources
3046  **/
3047 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
3048 {
3049         int i;
3050
3051         if (vsi->tx_rings) {
3052                 for (i = 0; i < vsi->num_queue_pairs; i++)
3053                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
3054                                 i40e_free_tx_resources(vsi->tx_rings[i]);
3055         }
3056
3057         if (vsi->xdp_rings) {
3058                 for (i = 0; i < vsi->num_queue_pairs; i++)
3059                         if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc)
3060                                 i40e_free_tx_resources(vsi->xdp_rings[i]);
3061         }
3062 }
3063
3064 /**
3065  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
3066  * @vsi: ptr to the VSI
3067  *
3068  * If this function returns with an error, then it's possible one or
3069  * more of the rings is populated (while the rest are not).  It is the
3070  * callers duty to clean those orphaned rings.
3071  *
3072  * Return 0 on success, negative on failure
3073  **/
3074 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
3075 {
3076         int i, err = 0;
3077
3078         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3079                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
3080         return err;
3081 }
3082
3083 /**
3084  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
3085  * @vsi: ptr to the VSI
3086  *
3087  * Free all receive software resources
3088  **/
3089 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
3090 {
3091         int i;
3092
3093         if (!vsi->rx_rings)
3094                 return;
3095
3096         for (i = 0; i < vsi->num_queue_pairs; i++)
3097                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
3098                         i40e_free_rx_resources(vsi->rx_rings[i]);
3099 }
3100
3101 /**
3102  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
3103  * @ring: The Tx ring to configure
3104  *
3105  * This enables/disables XPS for a given Tx descriptor ring
3106  * based on the TCs enabled for the VSI that ring belongs to.
3107  **/
3108 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
3109 {
3110         int cpu;
3111
3112         if (!ring->q_vector || !ring->netdev || ring->ch)
3113                 return;
3114
3115         /* We only initialize XPS once, so as not to overwrite user settings */
3116         if (test_and_set_bit(__I40E_TX_XPS_INIT_DONE, ring->state))
3117                 return;
3118
3119         cpu = cpumask_local_spread(ring->q_vector->v_idx, -1);
3120         netif_set_xps_queue(ring->netdev, get_cpu_mask(cpu),
3121                             ring->queue_index);
3122 }
3123
3124 /**
3125  * i40e_xsk_umem - Retrieve the AF_XDP ZC if XDP and ZC is enabled
3126  * @ring: The Tx or Rx ring
3127  *
3128  * Returns the UMEM or NULL.
3129  **/
3130 static struct xdp_umem *i40e_xsk_umem(struct i40e_ring *ring)
3131 {
3132         bool xdp_on = i40e_enabled_xdp_vsi(ring->vsi);
3133         int qid = ring->queue_index;
3134
3135         if (ring_is_xdp(ring))
3136                 qid -= ring->vsi->alloc_queue_pairs;
3137
3138         if (!xdp_on || !test_bit(qid, ring->vsi->af_xdp_zc_qps))
3139                 return NULL;
3140
3141         return xdp_get_umem_from_qid(ring->vsi->netdev, qid);
3142 }
3143
3144 /**
3145  * i40e_configure_tx_ring - Configure a transmit ring context and rest
3146  * @ring: The Tx ring to configure
3147  *
3148  * Configure the Tx descriptor ring in the HMC context.
3149  **/
3150 static int i40e_configure_tx_ring(struct i40e_ring *ring)
3151 {
3152         struct i40e_vsi *vsi = ring->vsi;
3153         u16 pf_q = vsi->base_queue + ring->queue_index;
3154         struct i40e_hw *hw = &vsi->back->hw;
3155         struct i40e_hmc_obj_txq tx_ctx;
3156         i40e_status err = 0;
3157         u32 qtx_ctl = 0;
3158
3159         if (ring_is_xdp(ring))
3160                 ring->xsk_umem = i40e_xsk_umem(ring);
3161
3162         /* some ATR related tx ring init */
3163         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
3164                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
3165                 ring->atr_count = 0;
3166         } else {
3167                 ring->atr_sample_rate = 0;
3168         }
3169
3170         /* configure XPS */
3171         i40e_config_xps_tx_ring(ring);
3172
3173         /* clear the context structure first */
3174         memset(&tx_ctx, 0, sizeof(tx_ctx));
3175
3176         tx_ctx.new_context = 1;
3177         tx_ctx.base = (ring->dma / 128);
3178         tx_ctx.qlen = ring->count;
3179         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
3180                                                I40E_FLAG_FD_ATR_ENABLED));
3181         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
3182         /* FDIR VSI tx ring can still use RS bit and writebacks */
3183         if (vsi->type != I40E_VSI_FDIR)
3184                 tx_ctx.head_wb_ena = 1;
3185         tx_ctx.head_wb_addr = ring->dma +
3186                               (ring->count * sizeof(struct i40e_tx_desc));
3187
3188         /* As part of VSI creation/update, FW allocates certain
3189          * Tx arbitration queue sets for each TC enabled for
3190          * the VSI. The FW returns the handles to these queue
3191          * sets as part of the response buffer to Add VSI,
3192          * Update VSI, etc. AQ commands. It is expected that
3193          * these queue set handles be associated with the Tx
3194          * queues by the driver as part of the TX queue context
3195          * initialization. This has to be done regardless of
3196          * DCB as by default everything is mapped to TC0.
3197          */
3198
3199         if (ring->ch)
3200                 tx_ctx.rdylist =
3201                         le16_to_cpu(ring->ch->info.qs_handle[ring->dcb_tc]);
3202
3203         else
3204                 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
3205
3206         tx_ctx.rdylist_act = 0;
3207
3208         /* clear the context in the HMC */
3209         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
3210         if (err) {
3211                 dev_info(&vsi->back->pdev->dev,
3212                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
3213                          ring->queue_index, pf_q, err);
3214                 return -ENOMEM;
3215         }
3216
3217         /* set the context in the HMC */
3218         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
3219         if (err) {
3220                 dev_info(&vsi->back->pdev->dev,
3221                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
3222                          ring->queue_index, pf_q, err);
3223                 return -ENOMEM;
3224         }
3225
3226         /* Now associate this queue with this PCI function */
3227         if (ring->ch) {
3228                 if (ring->ch->type == I40E_VSI_VMDQ2)
3229                         qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
3230                 else
3231                         return -EINVAL;
3232
3233                 qtx_ctl |= (ring->ch->vsi_number <<
3234                             I40E_QTX_CTL_VFVM_INDX_SHIFT) &
3235                             I40E_QTX_CTL_VFVM_INDX_MASK;
3236         } else {
3237                 if (vsi->type == I40E_VSI_VMDQ2) {
3238                         qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
3239                         qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
3240                                     I40E_QTX_CTL_VFVM_INDX_MASK;
3241                 } else {
3242                         qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
3243                 }
3244         }
3245
3246         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
3247                     I40E_QTX_CTL_PF_INDX_MASK);
3248         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
3249         i40e_flush(hw);
3250
3251         /* cache tail off for easier writes later */
3252         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
3253
3254         return 0;
3255 }
3256
3257 /**
3258  * i40e_configure_rx_ring - Configure a receive ring context
3259  * @ring: The Rx ring to configure
3260  *
3261  * Configure the Rx descriptor ring in the HMC context.
3262  **/
3263 static int i40e_configure_rx_ring(struct i40e_ring *ring)
3264 {
3265         struct i40e_vsi *vsi = ring->vsi;
3266         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
3267         u16 pf_q = vsi->base_queue + ring->queue_index;
3268         struct i40e_hw *hw = &vsi->back->hw;
3269         struct i40e_hmc_obj_rxq rx_ctx;
3270         i40e_status err = 0;
3271         bool ok;
3272         int ret;
3273
3274         bitmap_zero(ring->state, __I40E_RING_STATE_NBITS);
3275
3276         /* clear the context structure first */
3277         memset(&rx_ctx, 0, sizeof(rx_ctx));
3278
3279         if (ring->vsi->type == I40E_VSI_MAIN)
3280                 xdp_rxq_info_unreg_mem_model(&ring->xdp_rxq);
3281
3282         kfree(ring->rx_bi);
3283         ring->xsk_umem = i40e_xsk_umem(ring);
3284         if (ring->xsk_umem) {
3285                 ret = i40e_alloc_rx_bi_zc(ring);
3286                 if (ret)
3287                         return ret;
3288                 ring->rx_buf_len = xsk_umem_get_rx_frame_size(ring->xsk_umem);
3289                 /* For AF_XDP ZC, we disallow packets to span on
3290                  * multiple buffers, thus letting us skip that
3291                  * handling in the fast-path.
3292                  */
3293                 chain_len = 1;
3294                 ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
3295                                                  MEM_TYPE_XSK_BUFF_POOL,
3296                                                  NULL);
3297                 if (ret)
3298                         return ret;
3299                 dev_info(&vsi->back->pdev->dev,
3300                          "Registered XDP mem model MEM_TYPE_XSK_BUFF_POOL on Rx ring %d\n",
3301                          ring->queue_index);
3302
3303         } else {
3304                 ret = i40e_alloc_rx_bi(ring);
3305                 if (ret)
3306                         return ret;
3307                 ring->rx_buf_len = vsi->rx_buf_len;
3308                 if (ring->vsi->type == I40E_VSI_MAIN) {
3309                         ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
3310                                                          MEM_TYPE_PAGE_SHARED,
3311                                                          NULL);
3312                         if (ret)
3313                                 return ret;
3314                 }
3315         }
3316
3317         rx_ctx.dbuff = DIV_ROUND_UP(ring->rx_buf_len,
3318                                     BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3319
3320         rx_ctx.base = (ring->dma / 128);
3321         rx_ctx.qlen = ring->count;
3322
3323         /* use 32 byte descriptors */
3324         rx_ctx.dsize = 1;
3325
3326         /* descriptor type is always zero
3327          * rx_ctx.dtype = 0;
3328          */
3329         rx_ctx.hsplit_0 = 0;
3330
3331         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
3332         if (hw->revision_id == 0)
3333                 rx_ctx.lrxqthresh = 0;
3334         else
3335                 rx_ctx.lrxqthresh = 1;
3336         rx_ctx.crcstrip = 1;
3337         rx_ctx.l2tsel = 1;
3338         /* this controls whether VLAN is stripped from inner headers */
3339         rx_ctx.showiv = 0;
3340         /* set the prefena field to 1 because the manual says to */
3341         rx_ctx.prefena = 1;
3342
3343         /* clear the context in the HMC */
3344         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
3345         if (err) {
3346                 dev_info(&vsi->back->pdev->dev,
3347                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3348                          ring->queue_index, pf_q, err);
3349                 return -ENOMEM;
3350         }
3351
3352         /* set the context in the HMC */
3353         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
3354         if (err) {
3355                 dev_info(&vsi->back->pdev->dev,
3356                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3357                          ring->queue_index, pf_q, err);
3358                 return -ENOMEM;
3359         }
3360
3361         /* configure Rx buffer alignment */
3362         if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
3363                 clear_ring_build_skb_enabled(ring);
3364         else
3365                 set_ring_build_skb_enabled(ring);
3366
3367         /* cache tail for quicker writes, and clear the reg before use */
3368         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
3369         writel(0, ring->tail);
3370
3371         if (ring->xsk_umem) {
3372                 xsk_buff_set_rxq_info(ring->xsk_umem, &ring->xdp_rxq);
3373                 ok = i40e_alloc_rx_buffers_zc(ring, I40E_DESC_UNUSED(ring));
3374         } else {
3375                 ok = !i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
3376         }
3377         if (!ok) {
3378                 /* Log this in case the user has forgotten to give the kernel
3379                  * any buffers, even later in the application.
3380                  */
3381                 dev_info(&vsi->back->pdev->dev,
3382                          "Failed to allocate some buffers on %sRx ring %d (pf_q %d)\n",
3383                          ring->xsk_umem ? "UMEM enabled " : "",
3384                          ring->queue_index, pf_q);
3385         }
3386
3387         return 0;
3388 }
3389
3390 /**
3391  * i40e_vsi_configure_tx - Configure the VSI for Tx
3392  * @vsi: VSI structure describing this set of rings and resources
3393  *
3394  * Configure the Tx VSI for operation.
3395  **/
3396 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
3397 {
3398         int err = 0;
3399         u16 i;
3400
3401         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3402                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
3403
3404         if (err || !i40e_enabled_xdp_vsi(vsi))
3405                 return err;
3406
3407         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3408                 err = i40e_configure_tx_ring(vsi->xdp_rings[i]);
3409
3410         return err;
3411 }
3412
3413 /**
3414  * i40e_vsi_configure_rx - Configure the VSI for Rx
3415  * @vsi: the VSI being configured
3416  *
3417  * Configure the Rx VSI for operation.
3418  **/
3419 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
3420 {
3421         int err = 0;
3422         u16 i;
3423
3424         if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX)) {
3425                 vsi->max_frame = I40E_MAX_RXBUFFER;
3426                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
3427 #if (PAGE_SIZE < 8192)
3428         } else if (!I40E_2K_TOO_SMALL_WITH_PADDING &&
3429                    (vsi->netdev->mtu <= ETH_DATA_LEN)) {
3430                 vsi->max_frame = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
3431                 vsi->rx_buf_len = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
3432 #endif
3433         } else {
3434                 vsi->max_frame = I40E_MAX_RXBUFFER;
3435                 vsi->rx_buf_len = (PAGE_SIZE < 8192) ? I40E_RXBUFFER_3072 :
3436                                                        I40E_RXBUFFER_2048;
3437         }
3438
3439         /* set up individual rings */
3440         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3441                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3442
3443         return err;
3444 }
3445
3446 /**
3447  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3448  * @vsi: ptr to the VSI
3449  **/
3450 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3451 {
3452         struct i40e_ring *tx_ring, *rx_ring;
3453         u16 qoffset, qcount;
3454         int i, n;
3455
3456         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3457                 /* Reset the TC information */
3458                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3459                         rx_ring = vsi->rx_rings[i];
3460                         tx_ring = vsi->tx_rings[i];
3461                         rx_ring->dcb_tc = 0;
3462                         tx_ring->dcb_tc = 0;
3463                 }
3464                 return;
3465         }
3466
3467         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3468                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3469                         continue;
3470
3471                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3472                 qcount = vsi->tc_config.tc_info[n].qcount;
3473                 for (i = qoffset; i < (qoffset + qcount); i++) {
3474                         rx_ring = vsi->rx_rings[i];
3475                         tx_ring = vsi->tx_rings[i];
3476                         rx_ring->dcb_tc = n;
3477                         tx_ring->dcb_tc = n;
3478                 }
3479         }
3480 }
3481
3482 /**
3483  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3484  * @vsi: ptr to the VSI
3485  **/
3486 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3487 {
3488         if (vsi->netdev)
3489                 i40e_set_rx_mode(vsi->netdev);
3490 }
3491
3492 /**
3493  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3494  * @vsi: Pointer to the targeted VSI
3495  *
3496  * This function replays the hlist on the hw where all the SB Flow Director
3497  * filters were saved.
3498  **/
3499 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3500 {
3501         struct i40e_fdir_filter *filter;
3502         struct i40e_pf *pf = vsi->back;
3503         struct hlist_node *node;
3504
3505         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3506                 return;
3507
3508         /* Reset FDir counters as we're replaying all existing filters */
3509         pf->fd_tcp4_filter_cnt = 0;
3510         pf->fd_udp4_filter_cnt = 0;
3511         pf->fd_sctp4_filter_cnt = 0;
3512         pf->fd_ip4_filter_cnt = 0;
3513
3514         hlist_for_each_entry_safe(filter, node,
3515                                   &pf->fdir_filter_list, fdir_node) {
3516                 i40e_add_del_fdir(vsi, filter, true);
3517         }
3518 }
3519
3520 /**
3521  * i40e_vsi_configure - Set up the VSI for action
3522  * @vsi: the VSI being configured
3523  **/
3524 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3525 {
3526         int err;
3527
3528         i40e_set_vsi_rx_mode(vsi);
3529         i40e_restore_vlan(vsi);
3530         i40e_vsi_config_dcb_rings(vsi);
3531         err = i40e_vsi_configure_tx(vsi);
3532         if (!err)
3533                 err = i40e_vsi_configure_rx(vsi);
3534
3535         return err;
3536 }
3537
3538 /**
3539  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3540  * @vsi: the VSI being configured
3541  **/
3542 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3543 {
3544         bool has_xdp = i40e_enabled_xdp_vsi(vsi);
3545         struct i40e_pf *pf = vsi->back;
3546         struct i40e_hw *hw = &pf->hw;
3547         u16 vector;
3548         int i, q;
3549         u32 qp;
3550
3551         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3552          * and PFINT_LNKLSTn registers, e.g.:
3553          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3554          */
3555         qp = vsi->base_queue;
3556         vector = vsi->base_vector;
3557         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3558                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3559
3560                 q_vector->rx.next_update = jiffies + 1;
3561                 q_vector->rx.target_itr =
3562                         ITR_TO_REG(vsi->rx_rings[i]->itr_setting);
3563                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3564                      q_vector->rx.target_itr >> 1);
3565                 q_vector->rx.current_itr = q_vector->rx.target_itr;
3566
3567                 q_vector->tx.next_update = jiffies + 1;
3568                 q_vector->tx.target_itr =
3569                         ITR_TO_REG(vsi->tx_rings[i]->itr_setting);
3570                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3571                      q_vector->tx.target_itr >> 1);
3572                 q_vector->tx.current_itr = q_vector->tx.target_itr;
3573
3574                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3575                      i40e_intrl_usec_to_reg(vsi->int_rate_limit));
3576
3577                 /* Linked list for the queuepairs assigned to this vector */
3578                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3579                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3580                         u32 nextqp = has_xdp ? qp + vsi->alloc_queue_pairs : qp;
3581                         u32 val;
3582
3583                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3584                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3585                               (vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3586                               (nextqp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
3587                               (I40E_QUEUE_TYPE_TX <<
3588                                I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3589
3590                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3591
3592                         if (has_xdp) {
3593                                 val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3594                                       (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3595                                       (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3596                                       (qp << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
3597                                       (I40E_QUEUE_TYPE_TX <<
3598                                        I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3599
3600                                 wr32(hw, I40E_QINT_TQCTL(nextqp), val);
3601                         }
3602
3603                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3604                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3605                               (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3606                               ((qp + 1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
3607                               (I40E_QUEUE_TYPE_RX <<
3608                                I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3609
3610                         /* Terminate the linked list */
3611                         if (q == (q_vector->num_ringpairs - 1))
3612                                 val |= (I40E_QUEUE_END_OF_LIST <<
3613                                         I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3614
3615                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3616                         qp++;
3617                 }
3618         }
3619
3620         i40e_flush(hw);
3621 }
3622
3623 /**
3624  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3625  * @pf: pointer to private device data structure
3626  **/
3627 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3628 {
3629         struct i40e_hw *hw = &pf->hw;
3630         u32 val;
3631
3632         /* clear things first */
3633         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3634         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3635
3636         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3637               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3638               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3639               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3640               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3641               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3642               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3643               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3644
3645         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3646                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3647
3648         if (pf->flags & I40E_FLAG_PTP)
3649                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3650
3651         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3652
3653         /* SW_ITR_IDX = 0, but don't change INTENA */
3654         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3655                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3656
3657         /* OTHER_ITR_IDX = 0 */
3658         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3659 }
3660
3661 /**
3662  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3663  * @vsi: the VSI being configured
3664  **/
3665 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3666 {
3667         u32 nextqp = i40e_enabled_xdp_vsi(vsi) ? vsi->alloc_queue_pairs : 0;
3668         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3669         struct i40e_pf *pf = vsi->back;
3670         struct i40e_hw *hw = &pf->hw;
3671         u32 val;
3672
3673         /* set the ITR configuration */
3674         q_vector->rx.next_update = jiffies + 1;
3675         q_vector->rx.target_itr = ITR_TO_REG(vsi->rx_rings[0]->itr_setting);
3676         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.target_itr >> 1);
3677         q_vector->rx.current_itr = q_vector->rx.target_itr;
3678         q_vector->tx.next_update = jiffies + 1;
3679         q_vector->tx.target_itr = ITR_TO_REG(vsi->tx_rings[0]->itr_setting);
3680         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.target_itr >> 1);
3681         q_vector->tx.current_itr = q_vector->tx.target_itr;
3682
3683         i40e_enable_misc_int_causes(pf);
3684
3685         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3686         wr32(hw, I40E_PFINT_LNKLST0, 0);
3687
3688         /* Associate the queue pair to the vector and enable the queue int */
3689         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                   |
3690               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3691               (nextqp      << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3692               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3693
3694         wr32(hw, I40E_QINT_RQCTL(0), val);
3695
3696         if (i40e_enabled_xdp_vsi(vsi)) {
3697                 val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                 |
3698                       (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)|
3699                       (I40E_QUEUE_TYPE_TX
3700                        << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3701
3702                 wr32(hw, I40E_QINT_TQCTL(nextqp), val);
3703         }
3704
3705         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3706               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3707               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3708
3709         wr32(hw, I40E_QINT_TQCTL(0), val);
3710         i40e_flush(hw);
3711 }
3712
3713 /**
3714  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3715  * @pf: board private structure
3716  **/
3717 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3718 {
3719         struct i40e_hw *hw = &pf->hw;
3720
3721         wr32(hw, I40E_PFINT_DYN_CTL0,
3722              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3723         i40e_flush(hw);
3724 }
3725
3726 /**
3727  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3728  * @pf: board private structure
3729  **/
3730 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3731 {
3732         struct i40e_hw *hw = &pf->hw;
3733         u32 val;
3734
3735         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3736               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3737               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3738
3739         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3740         i40e_flush(hw);
3741 }
3742
3743 /**
3744  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3745  * @irq: interrupt number
3746  * @data: pointer to a q_vector
3747  **/
3748 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3749 {
3750         struct i40e_q_vector *q_vector = data;
3751
3752         if (!q_vector->tx.ring && !q_vector->rx.ring)
3753                 return IRQ_HANDLED;
3754
3755         napi_schedule_irqoff(&q_vector->napi);
3756
3757         return IRQ_HANDLED;
3758 }
3759
3760 /**
3761  * i40e_irq_affinity_notify - Callback for affinity changes
3762  * @notify: context as to what irq was changed
3763  * @mask: the new affinity mask
3764  *
3765  * This is a callback function used by the irq_set_affinity_notifier function
3766  * so that we may register to receive changes to the irq affinity masks.
3767  **/
3768 static void i40e_irq_affinity_notify(struct irq_affinity_notify *notify,
3769                                      const cpumask_t *mask)
3770 {
3771         struct i40e_q_vector *q_vector =
3772                 container_of(notify, struct i40e_q_vector, affinity_notify);
3773
3774         cpumask_copy(&q_vector->affinity_mask, mask);
3775 }
3776
3777 /**
3778  * i40e_irq_affinity_release - Callback for affinity notifier release
3779  * @ref: internal core kernel usage
3780  *
3781  * This is a callback function used by the irq_set_affinity_notifier function
3782  * to inform the current notification subscriber that they will no longer
3783  * receive notifications.
3784  **/
3785 static void i40e_irq_affinity_release(struct kref *ref) {}
3786
3787 /**
3788  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3789  * @vsi: the VSI being configured
3790  * @basename: name for the vector
3791  *
3792  * Allocates MSI-X vectors and requests interrupts from the kernel.
3793  **/
3794 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3795 {
3796         int q_vectors = vsi->num_q_vectors;
3797         struct i40e_pf *pf = vsi->back;
3798         int base = vsi->base_vector;
3799         int rx_int_idx = 0;
3800         int tx_int_idx = 0;
3801         int vector, err;
3802         int irq_num;
3803         int cpu;
3804
3805         for (vector = 0; vector < q_vectors; vector++) {
3806                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3807
3808                 irq_num = pf->msix_entries[base + vector].vector;
3809
3810                 if (q_vector->tx.ring && q_vector->rx.ring) {
3811                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3812                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3813                         tx_int_idx++;
3814                 } else if (q_vector->rx.ring) {
3815                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3816                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3817                 } else if (q_vector->tx.ring) {
3818                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3819                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3820                 } else {
3821                         /* skip this unused q_vector */
3822                         continue;
3823                 }
3824                 err = request_irq(irq_num,
3825                                   vsi->irq_handler,
3826                                   0,
3827                                   q_vector->name,
3828                                   q_vector);
3829                 if (err) {
3830                         dev_info(&pf->pdev->dev,
3831                                  "MSIX request_irq failed, error: %d\n", err);
3832                         goto free_queue_irqs;
3833                 }
3834
3835                 /* register for affinity change notifications */
3836                 q_vector->affinity_notify.notify = i40e_irq_affinity_notify;
3837                 q_vector->affinity_notify.release = i40e_irq_affinity_release;
3838                 irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
3839                 /* Spread affinity hints out across online CPUs.
3840                  *
3841                  * get_cpu_mask returns a static constant mask with
3842                  * a permanent lifetime so it's ok to pass to
3843                  * irq_set_affinity_hint without making a copy.
3844                  */
3845                 cpu = cpumask_local_spread(q_vector->v_idx, -1);
3846                 irq_set_affinity_hint(irq_num, get_cpu_mask(cpu));
3847         }
3848
3849         vsi->irqs_ready = true;
3850         return 0;
3851
3852 free_queue_irqs:
3853         while (vector) {
3854                 vector--;
3855                 irq_num = pf->msix_entries[base + vector].vector;
3856                 irq_set_affinity_notifier(irq_num, NULL);
3857                 irq_set_affinity_hint(irq_num, NULL);
3858                 free_irq(irq_num, &vsi->q_vectors[vector]);
3859         }
3860         return err;
3861 }
3862
3863 /**
3864  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3865  * @vsi: the VSI being un-configured
3866  **/
3867 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3868 {
3869         struct i40e_pf *pf = vsi->back;
3870         struct i40e_hw *hw = &pf->hw;
3871         int base = vsi->base_vector;
3872         int i;
3873
3874         /* disable interrupt causation from each queue */
3875         for (i = 0; i < vsi->num_queue_pairs; i++) {
3876                 u32 val;
3877
3878                 val = rd32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx));
3879                 val &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3880                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), val);
3881
3882                 val = rd32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx));
3883                 val &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3884                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), val);
3885
3886                 if (!i40e_enabled_xdp_vsi(vsi))
3887                         continue;
3888                 wr32(hw, I40E_QINT_TQCTL(vsi->xdp_rings[i]->reg_idx), 0);
3889         }
3890
3891         /* disable each interrupt */
3892         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3893                 for (i = vsi->base_vector;
3894                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3895                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3896
3897                 i40e_flush(hw);
3898                 for (i = 0; i < vsi->num_q_vectors; i++)
3899                         synchronize_irq(pf->msix_entries[i + base].vector);
3900         } else {
3901                 /* Legacy and MSI mode - this stops all interrupt handling */
3902                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3903                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3904                 i40e_flush(hw);
3905                 synchronize_irq(pf->pdev->irq);
3906         }
3907 }
3908
3909 /**
3910  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3911  * @vsi: the VSI being configured
3912  **/
3913 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3914 {
3915         struct i40e_pf *pf = vsi->back;
3916         int i;
3917
3918         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3919                 for (i = 0; i < vsi->num_q_vectors; i++)
3920                         i40e_irq_dynamic_enable(vsi, i);
3921         } else {
3922                 i40e_irq_dynamic_enable_icr0(pf);
3923         }
3924
3925         i40e_flush(&pf->hw);
3926         return 0;
3927 }
3928
3929 /**
3930  * i40e_free_misc_vector - Free the vector that handles non-queue events
3931  * @pf: board private structure
3932  **/
3933 static void i40e_free_misc_vector(struct i40e_pf *pf)
3934 {
3935         /* Disable ICR 0 */
3936         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3937         i40e_flush(&pf->hw);
3938
3939         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
3940                 synchronize_irq(pf->msix_entries[0].vector);
3941                 free_irq(pf->msix_entries[0].vector, pf);
3942                 clear_bit(__I40E_MISC_IRQ_REQUESTED, pf->state);
3943         }
3944 }
3945
3946 /**
3947  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3948  * @irq: interrupt number
3949  * @data: pointer to a q_vector
3950  *
3951  * This is the handler used for all MSI/Legacy interrupts, and deals
3952  * with both queue and non-queue interrupts.  This is also used in
3953  * MSIX mode to handle the non-queue interrupts.
3954  **/
3955 static irqreturn_t i40e_intr(int irq, void *data)
3956 {
3957         struct i40e_pf *pf = (struct i40e_pf *)data;
3958         struct i40e_hw *hw = &pf->hw;
3959         irqreturn_t ret = IRQ_NONE;
3960         u32 icr0, icr0_remaining;
3961         u32 val, ena_mask;
3962
3963         icr0 = rd32(hw, I40E_PFINT_ICR0);
3964         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3965
3966         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3967         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3968                 goto enable_intr;
3969
3970         /* if interrupt but no bits showing, must be SWINT */
3971         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3972             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3973                 pf->sw_int_count++;
3974
3975         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3976             (icr0 & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3977                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3978                 dev_dbg(&pf->pdev->dev, "cleared PE_CRITERR\n");
3979                 set_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
3980         }
3981
3982         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3983         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3984                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3985                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3986
3987                 /* We do not have a way to disarm Queue causes while leaving
3988                  * interrupt enabled for all other causes, ideally
3989                  * interrupt should be disabled while we are in NAPI but
3990                  * this is not a performance path and napi_schedule()
3991                  * can deal with rescheduling.
3992                  */
3993                 if (!test_bit(__I40E_DOWN, pf->state))
3994                         napi_schedule_irqoff(&q_vector->napi);
3995         }
3996
3997         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3998                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3999                 set_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state);
4000                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
4001         }
4002
4003         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
4004                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
4005                 set_bit(__I40E_MDD_EVENT_PENDING, pf->state);
4006         }
4007
4008         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
4009                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
4010                 set_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4011         }
4012
4013         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
4014                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
4015                         set_bit(__I40E_RESET_INTR_RECEIVED, pf->state);
4016                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
4017                 val = rd32(hw, I40E_GLGEN_RSTAT);
4018                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
4019                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
4020                 if (val == I40E_RESET_CORER) {
4021                         pf->corer_count++;
4022                 } else if (val == I40E_RESET_GLOBR) {
4023                         pf->globr_count++;
4024                 } else if (val == I40E_RESET_EMPR) {
4025                         pf->empr_count++;
4026                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state);
4027                 }
4028         }
4029
4030         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
4031                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
4032                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
4033                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
4034                          rd32(hw, I40E_PFHMC_ERRORINFO),
4035                          rd32(hw, I40E_PFHMC_ERRORDATA));
4036         }
4037
4038         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
4039                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
4040
4041                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
4042                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
4043                         i40e_ptp_tx_hwtstamp(pf);
4044                 }
4045         }
4046
4047         /* If a critical error is pending we have no choice but to reset the
4048          * device.
4049          * Report and mask out any remaining unexpected interrupts.
4050          */
4051         icr0_remaining = icr0 & ena_mask;
4052         if (icr0_remaining) {
4053                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
4054                          icr0_remaining);
4055                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
4056                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
4057                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
4058                         dev_info(&pf->pdev->dev, "device will be reset\n");
4059                         set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
4060                         i40e_service_event_schedule(pf);
4061                 }
4062                 ena_mask &= ~icr0_remaining;
4063         }
4064         ret = IRQ_HANDLED;
4065
4066 enable_intr:
4067         /* re-enable interrupt causes */
4068         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
4069         if (!test_bit(__I40E_DOWN, pf->state) ||
4070             test_bit(__I40E_RECOVERY_MODE, pf->state)) {
4071                 i40e_service_event_schedule(pf);
4072                 i40e_irq_dynamic_enable_icr0(pf);
4073         }
4074
4075         return ret;
4076 }
4077
4078 /**
4079  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
4080  * @tx_ring:  tx ring to clean
4081  * @budget:   how many cleans we're allowed
4082  *
4083  * Returns true if there's any budget left (e.g. the clean is finished)
4084  **/
4085 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
4086 {
4087         struct i40e_vsi *vsi = tx_ring->vsi;
4088         u16 i = tx_ring->next_to_clean;
4089         struct i40e_tx_buffer *tx_buf;
4090         struct i40e_tx_desc *tx_desc;
4091
4092         tx_buf = &tx_ring->tx_bi[i];
4093         tx_desc = I40E_TX_DESC(tx_ring, i);
4094         i -= tx_ring->count;
4095
4096         do {
4097                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
4098
4099                 /* if next_to_watch is not set then there is no work pending */
4100                 if (!eop_desc)
4101                         break;
4102
4103                 /* prevent any other reads prior to eop_desc */
4104                 smp_rmb();
4105
4106                 /* if the descriptor isn't done, no work yet to do */
4107                 if (!(eop_desc->cmd_type_offset_bsz &
4108                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
4109                         break;
4110
4111                 /* clear next_to_watch to prevent false hangs */
4112                 tx_buf->next_to_watch = NULL;
4113
4114                 tx_desc->buffer_addr = 0;
4115                 tx_desc->cmd_type_offset_bsz = 0;
4116                 /* move past filter desc */
4117                 tx_buf++;
4118                 tx_desc++;
4119                 i++;
4120                 if (unlikely(!i)) {
4121                         i -= tx_ring->count;
4122                         tx_buf = tx_ring->tx_bi;
4123                         tx_desc = I40E_TX_DESC(tx_ring, 0);
4124                 }
4125                 /* unmap skb header data */
4126                 dma_unmap_single(tx_ring->dev,
4127                                  dma_unmap_addr(tx_buf, dma),
4128                                  dma_unmap_len(tx_buf, len),
4129                                  DMA_TO_DEVICE);
4130                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
4131                         kfree(tx_buf->raw_buf);
4132
4133                 tx_buf->raw_buf = NULL;
4134                 tx_buf->tx_flags = 0;
4135                 tx_buf->next_to_watch = NULL;
4136                 dma_unmap_len_set(tx_buf, len, 0);
4137                 tx_desc->buffer_addr = 0;
4138                 tx_desc->cmd_type_offset_bsz = 0;
4139
4140                 /* move us past the eop_desc for start of next FD desc */
4141                 tx_buf++;
4142                 tx_desc++;
4143                 i++;
4144                 if (unlikely(!i)) {
4145                         i -= tx_ring->count;
4146                         tx_buf = tx_ring->tx_bi;
4147                         tx_desc = I40E_TX_DESC(tx_ring, 0);
4148                 }
4149
4150                 /* update budget accounting */
4151                 budget--;
4152         } while (likely(budget));
4153
4154         i += tx_ring->count;
4155         tx_ring->next_to_clean = i;
4156
4157         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
4158                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
4159
4160         return budget > 0;
4161 }
4162
4163 /**
4164  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
4165  * @irq: interrupt number
4166  * @data: pointer to a q_vector
4167  **/
4168 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
4169 {
4170         struct i40e_q_vector *q_vector = data;
4171         struct i40e_vsi *vsi;
4172
4173         if (!q_vector->tx.ring)
4174                 return IRQ_HANDLED;
4175
4176         vsi = q_vector->tx.ring->vsi;
4177         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
4178
4179         return IRQ_HANDLED;
4180 }
4181
4182 /**
4183  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
4184  * @vsi: the VSI being configured
4185  * @v_idx: vector index
4186  * @qp_idx: queue pair index
4187  **/
4188 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
4189 {
4190         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4191         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
4192         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
4193
4194         tx_ring->q_vector = q_vector;
4195         tx_ring->next = q_vector->tx.ring;
4196         q_vector->tx.ring = tx_ring;
4197         q_vector->tx.count++;
4198
4199         /* Place XDP Tx ring in the same q_vector ring list as regular Tx */
4200         if (i40e_enabled_xdp_vsi(vsi)) {
4201                 struct i40e_ring *xdp_ring = vsi->xdp_rings[qp_idx];
4202
4203                 xdp_ring->q_vector = q_vector;
4204                 xdp_ring->next = q_vector->tx.ring;
4205                 q_vector->tx.ring = xdp_ring;
4206                 q_vector->tx.count++;
4207         }
4208
4209         rx_ring->q_vector = q_vector;
4210         rx_ring->next = q_vector->rx.ring;
4211         q_vector->rx.ring = rx_ring;
4212         q_vector->rx.count++;
4213 }
4214
4215 /**
4216  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
4217  * @vsi: the VSI being configured
4218  *
4219  * This function maps descriptor rings to the queue-specific vectors
4220  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
4221  * one vector per queue pair, but on a constrained vector budget, we
4222  * group the queue pairs as "efficiently" as possible.
4223  **/
4224 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
4225 {
4226         int qp_remaining = vsi->num_queue_pairs;
4227         int q_vectors = vsi->num_q_vectors;
4228         int num_ringpairs;
4229         int v_start = 0;
4230         int qp_idx = 0;
4231
4232         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
4233          * group them so there are multiple queues per vector.
4234          * It is also important to go through all the vectors available to be
4235          * sure that if we don't use all the vectors, that the remaining vectors
4236          * are cleared. This is especially important when decreasing the
4237          * number of queues in use.
4238          */
4239         for (; v_start < q_vectors; v_start++) {
4240                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
4241
4242                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
4243
4244                 q_vector->num_ringpairs = num_ringpairs;
4245                 q_vector->reg_idx = q_vector->v_idx + vsi->base_vector - 1;
4246
4247                 q_vector->rx.count = 0;
4248                 q_vector->tx.count = 0;
4249                 q_vector->rx.ring = NULL;
4250                 q_vector->tx.ring = NULL;
4251
4252                 while (num_ringpairs--) {
4253                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
4254                         qp_idx++;
4255                         qp_remaining--;
4256                 }
4257         }
4258 }
4259
4260 /**
4261  * i40e_vsi_request_irq - Request IRQ from the OS
4262  * @vsi: the VSI being configured
4263  * @basename: name for the vector
4264  **/
4265 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
4266 {
4267         struct i40e_pf *pf = vsi->back;
4268         int err;
4269
4270         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4271                 err = i40e_vsi_request_irq_msix(vsi, basename);
4272         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
4273                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
4274                                   pf->int_name, pf);
4275         else
4276                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
4277                                   pf->int_name, pf);
4278
4279         if (err)
4280                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
4281
4282         return err;
4283 }
4284
4285 #ifdef CONFIG_NET_POLL_CONTROLLER
4286 /**
4287  * i40e_netpoll - A Polling 'interrupt' handler
4288  * @netdev: network interface device structure
4289  *
4290  * This is used by netconsole to send skbs without having to re-enable
4291  * interrupts.  It's not called while the normal interrupt routine is executing.
4292  **/
4293 static void i40e_netpoll(struct net_device *netdev)
4294 {
4295         struct i40e_netdev_priv *np = netdev_priv(netdev);
4296         struct i40e_vsi *vsi = np->vsi;
4297         struct i40e_pf *pf = vsi->back;
4298         int i;
4299
4300         /* if interface is down do nothing */
4301         if (test_bit(__I40E_VSI_DOWN, vsi->state))
4302                 return;
4303
4304         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4305                 for (i = 0; i < vsi->num_q_vectors; i++)
4306                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
4307         } else {
4308                 i40e_intr(pf->pdev->irq, netdev);
4309         }
4310 }
4311 #endif
4312
4313 #define I40E_QTX_ENA_WAIT_COUNT 50
4314
4315 /**
4316  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
4317  * @pf: the PF being configured
4318  * @pf_q: the PF queue
4319  * @enable: enable or disable state of the queue
4320  *
4321  * This routine will wait for the given Tx queue of the PF to reach the
4322  * enabled or disabled state.
4323  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4324  * multiple retries; else will return 0 in case of success.
4325  **/
4326 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4327 {
4328         int i;
4329         u32 tx_reg;
4330
4331         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4332                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
4333                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4334                         break;
4335
4336                 usleep_range(10, 20);
4337         }
4338         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4339                 return -ETIMEDOUT;
4340
4341         return 0;
4342 }
4343
4344 /**
4345  * i40e_control_tx_q - Start or stop a particular Tx queue
4346  * @pf: the PF structure
4347  * @pf_q: the PF queue to configure
4348  * @enable: start or stop the queue
4349  *
4350  * This function enables or disables a single queue. Note that any delay
4351  * required after the operation is expected to be handled by the caller of
4352  * this function.
4353  **/
4354 static void i40e_control_tx_q(struct i40e_pf *pf, int pf_q, bool enable)
4355 {
4356         struct i40e_hw *hw = &pf->hw;
4357         u32 tx_reg;
4358         int i;
4359
4360         /* warn the TX unit of coming changes */
4361         i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
4362         if (!enable)
4363                 usleep_range(10, 20);
4364
4365         for (i = 0; i < I40E_QTX_ENA_WAIT_COUNT; i++) {
4366                 tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
4367                 if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
4368                     ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
4369                         break;
4370                 usleep_range(1000, 2000);
4371         }
4372
4373         /* Skip if the queue is already in the requested state */
4374         if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4375                 return;
4376
4377         /* turn on/off the queue */
4378         if (enable) {
4379                 wr32(hw, I40E_QTX_HEAD(pf_q), 0);
4380                 tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
4381         } else {
4382                 tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
4383         }
4384
4385         wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
4386 }
4387
4388 /**
4389  * i40e_control_wait_tx_q - Start/stop Tx queue and wait for completion
4390  * @seid: VSI SEID
4391  * @pf: the PF structure
4392  * @pf_q: the PF queue to configure
4393  * @is_xdp: true if the queue is used for XDP
4394  * @enable: start or stop the queue
4395  **/
4396 int i40e_control_wait_tx_q(int seid, struct i40e_pf *pf, int pf_q,
4397                            bool is_xdp, bool enable)
4398 {
4399         int ret;
4400
4401         i40e_control_tx_q(pf, pf_q, enable);
4402
4403         /* wait for the change to finish */
4404         ret = i40e_pf_txq_wait(pf, pf_q, enable);
4405         if (ret) {
4406                 dev_info(&pf->pdev->dev,
4407                          "VSI seid %d %sTx ring %d %sable timeout\n",
4408                          seid, (is_xdp ? "XDP " : ""), pf_q,
4409                          (enable ? "en" : "dis"));
4410         }
4411
4412         return ret;
4413 }
4414
4415 /**
4416  * i40e_vsi_control_tx - Start or stop a VSI's rings
4417  * @vsi: the VSI being configured
4418  * @enable: start or stop the rings
4419  **/
4420 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
4421 {
4422         struct i40e_pf *pf = vsi->back;
4423         int i, pf_q, ret = 0;
4424
4425         pf_q = vsi->base_queue;
4426         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4427                 ret = i40e_control_wait_tx_q(vsi->seid, pf,
4428                                              pf_q,
4429                                              false /*is xdp*/, enable);
4430                 if (ret)
4431                         break;
4432
4433                 if (!i40e_enabled_xdp_vsi(vsi))
4434                         continue;
4435
4436                 ret = i40e_control_wait_tx_q(vsi->seid, pf,
4437                                              pf_q + vsi->alloc_queue_pairs,
4438                                              true /*is xdp*/, enable);
4439                 if (ret)
4440                         break;
4441         }
4442         return ret;
4443 }
4444
4445 /**
4446  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
4447  * @pf: the PF being configured
4448  * @pf_q: the PF queue
4449  * @enable: enable or disable state of the queue
4450  *
4451  * This routine will wait for the given Rx queue of the PF to reach the
4452  * enabled or disabled state.
4453  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4454  * multiple retries; else will return 0 in case of success.
4455  **/
4456 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4457 {
4458         int i;
4459         u32 rx_reg;
4460
4461         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4462                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
4463                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4464                         break;
4465
4466                 usleep_range(10, 20);
4467         }
4468         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4469                 return -ETIMEDOUT;
4470
4471         return 0;
4472 }
4473
4474 /**
4475  * i40e_control_rx_q - Start or stop a particular Rx queue
4476  * @pf: the PF structure
4477  * @pf_q: the PF queue to configure
4478  * @enable: start or stop the queue
4479  *
4480  * This function enables or disables a single queue. Note that
4481  * any delay required after the operation is expected to be
4482  * handled by the caller of this function.
4483  **/
4484 static void i40e_control_rx_q(struct i40e_pf *pf, int pf_q, bool enable)
4485 {
4486         struct i40e_hw *hw = &pf->hw;
4487         u32 rx_reg;
4488         int i;
4489
4490         for (i = 0; i < I40E_QTX_ENA_WAIT_COUNT; i++) {
4491                 rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
4492                 if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
4493                     ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
4494                         break;
4495                 usleep_range(1000, 2000);
4496         }
4497
4498         /* Skip if the queue is already in the requested state */
4499         if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4500                 return;
4501
4502         /* turn on/off the queue */
4503         if (enable)
4504                 rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
4505         else
4506                 rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
4507
4508         wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
4509 }
4510
4511 /**
4512  * i40e_control_wait_rx_q
4513  * @pf: the PF structure
4514  * @pf_q: queue being configured
4515  * @enable: start or stop the rings
4516  *
4517  * This function enables or disables a single queue along with waiting
4518  * for the change to finish. The caller of this function should handle
4519  * the delays needed in the case of disabling queues.
4520  **/
4521 int i40e_control_wait_rx_q(struct i40e_pf *pf, int pf_q, bool enable)
4522 {
4523         int ret = 0;
4524
4525         i40e_control_rx_q(pf, pf_q, enable);
4526
4527         /* wait for the change to finish */
4528         ret = i40e_pf_rxq_wait(pf, pf_q, enable);
4529         if (ret)
4530                 return ret;
4531
4532         return ret;
4533 }
4534
4535 /**
4536  * i40e_vsi_control_rx - Start or stop a VSI's rings
4537  * @vsi: the VSI being configured
4538  * @enable: start or stop the rings
4539  **/
4540 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
4541 {
4542         struct i40e_pf *pf = vsi->back;
4543         int i, pf_q, ret = 0;
4544
4545         pf_q = vsi->base_queue;
4546         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4547                 ret = i40e_control_wait_rx_q(pf, pf_q, enable);
4548                 if (ret) {
4549                         dev_info(&pf->pdev->dev,
4550                                  "VSI seid %d Rx ring %d %sable timeout\n",
4551                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
4552                         break;
4553                 }
4554         }
4555
4556         /* Due to HW errata, on Rx disable only, the register can indicate done
4557          * before it really is. Needs 50ms to be sure
4558          */
4559         if (!enable)
4560                 mdelay(50);
4561
4562         return ret;
4563 }
4564
4565 /**
4566  * i40e_vsi_start_rings - Start a VSI's rings
4567  * @vsi: the VSI being configured
4568  **/
4569 int i40e_vsi_start_rings(struct i40e_vsi *vsi)
4570 {
4571         int ret = 0;
4572
4573         /* do rx first for enable and last for disable */
4574         ret = i40e_vsi_control_rx(vsi, true);
4575         if (ret)
4576                 return ret;
4577         ret = i40e_vsi_control_tx(vsi, true);
4578
4579         return ret;
4580 }
4581
4582 /**
4583  * i40e_vsi_stop_rings - Stop a VSI's rings
4584  * @vsi: the VSI being configured
4585  **/
4586 void i40e_vsi_stop_rings(struct i40e_vsi *vsi)
4587 {
4588         /* When port TX is suspended, don't wait */
4589         if (test_bit(__I40E_PORT_SUSPENDED, vsi->back->state))
4590                 return i40e_vsi_stop_rings_no_wait(vsi);
4591
4592         /* do rx first for enable and last for disable
4593          * Ignore return value, we need to shutdown whatever we can
4594          */
4595         i40e_vsi_control_tx(vsi, false);
4596         i40e_vsi_control_rx(vsi, false);
4597 }
4598
4599 /**
4600  * i40e_vsi_stop_rings_no_wait - Stop a VSI's rings and do not delay
4601  * @vsi: the VSI being shutdown
4602  *
4603  * This function stops all the rings for a VSI but does not delay to verify
4604  * that rings have been disabled. It is expected that the caller is shutting
4605  * down multiple VSIs at once and will delay together for all the VSIs after
4606  * initiating the shutdown. This is particularly useful for shutting down lots
4607  * of VFs together. Otherwise, a large delay can be incurred while configuring
4608  * each VSI in serial.
4609  **/
4610 void i40e_vsi_stop_rings_no_wait(struct i40e_vsi *vsi)
4611 {
4612         struct i40e_pf *pf = vsi->back;
4613         int i, pf_q;
4614
4615         pf_q = vsi->base_queue;
4616         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4617                 i40e_control_tx_q(pf, pf_q, false);
4618                 i40e_control_rx_q(pf, pf_q, false);
4619         }
4620 }
4621
4622 /**
4623  * i40e_vsi_free_irq - Free the irq association with the OS
4624  * @vsi: the VSI being configured
4625  **/
4626 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
4627 {
4628         struct i40e_pf *pf = vsi->back;
4629         struct i40e_hw *hw = &pf->hw;
4630         int base = vsi->base_vector;
4631         u32 val, qp;
4632         int i;
4633
4634         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4635                 if (!vsi->q_vectors)
4636                         return;
4637
4638                 if (!vsi->irqs_ready)
4639                         return;
4640
4641                 vsi->irqs_ready = false;
4642                 for (i = 0; i < vsi->num_q_vectors; i++) {
4643                         int irq_num;
4644                         u16 vector;
4645
4646                         vector = i + base;
4647                         irq_num = pf->msix_entries[vector].vector;
4648
4649                         /* free only the irqs that were actually requested */
4650                         if (!vsi->q_vectors[i] ||
4651                             !vsi->q_vectors[i]->num_ringpairs)
4652                                 continue;
4653
4654                         /* clear the affinity notifier in the IRQ descriptor */
4655                         irq_set_affinity_notifier(irq_num, NULL);
4656                         /* remove our suggested affinity mask for this IRQ */
4657                         irq_set_affinity_hint(irq_num, NULL);
4658                         synchronize_irq(irq_num);
4659                         free_irq(irq_num, vsi->q_vectors[i]);
4660
4661                         /* Tear down the interrupt queue link list
4662                          *
4663                          * We know that they come in pairs and always
4664                          * the Rx first, then the Tx.  To clear the
4665                          * link list, stick the EOL value into the
4666                          * next_q field of the registers.
4667                          */
4668                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4669                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4670                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4671                         val |= I40E_QUEUE_END_OF_LIST
4672                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4673                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4674
4675                         while (qp != I40E_QUEUE_END_OF_LIST) {
4676                                 u32 next;
4677
4678                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4679
4680                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4681                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4682                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4683                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4684
4685                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4686                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4687
4688                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4689
4690                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4691
4692                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4693                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4694
4695                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4696                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4697                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4698                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4699
4700                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4701                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4702
4703                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4704                                 qp = next;
4705                         }
4706                 }
4707         } else {
4708                 free_irq(pf->pdev->irq, pf);
4709
4710                 val = rd32(hw, I40E_PFINT_LNKLST0);
4711                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4712                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4713                 val |= I40E_QUEUE_END_OF_LIST
4714                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4715                 wr32(hw, I40E_PFINT_LNKLST0, val);
4716
4717                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4718                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4719                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4720                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4721                          I40E_QINT_RQCTL_INTEVENT_MASK);
4722
4723                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4724                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4725
4726                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4727
4728                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4729
4730                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4731                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4732                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4733                          I40E_QINT_TQCTL_INTEVENT_MASK);
4734
4735                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4736                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4737
4738                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4739         }
4740 }
4741
4742 /**
4743  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4744  * @vsi: the VSI being configured
4745  * @v_idx: Index of vector to be freed
4746  *
4747  * This function frees the memory allocated to the q_vector.  In addition if
4748  * NAPI is enabled it will delete any references to the NAPI struct prior
4749  * to freeing the q_vector.
4750  **/
4751 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4752 {
4753         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4754         struct i40e_ring *ring;
4755
4756         if (!q_vector)
4757                 return;
4758
4759         /* disassociate q_vector from rings */
4760         i40e_for_each_ring(ring, q_vector->tx)
4761                 ring->q_vector = NULL;
4762
4763         i40e_for_each_ring(ring, q_vector->rx)
4764                 ring->q_vector = NULL;
4765
4766         /* only VSI w/ an associated netdev is set up w/ NAPI */
4767         if (vsi->netdev)
4768                 netif_napi_del(&q_vector->napi);
4769
4770         vsi->q_vectors[v_idx] = NULL;
4771
4772         kfree_rcu(q_vector, rcu);
4773 }
4774
4775 /**
4776  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4777  * @vsi: the VSI being un-configured
4778  *
4779  * This frees the memory allocated to the q_vectors and
4780  * deletes references to the NAPI struct.
4781  **/
4782 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4783 {
4784         int v_idx;
4785
4786         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4787                 i40e_free_q_vector(vsi, v_idx);
4788 }
4789
4790 /**
4791  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4792  * @pf: board private structure
4793  **/
4794 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4795 {
4796         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4797         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4798                 pci_disable_msix(pf->pdev);
4799                 kfree(pf->msix_entries);
4800                 pf->msix_entries = NULL;
4801                 kfree(pf->irq_pile);
4802                 pf->irq_pile = NULL;
4803         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4804                 pci_disable_msi(pf->pdev);
4805         }
4806         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4807 }
4808
4809 /**
4810  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4811  * @pf: board private structure
4812  *
4813  * We go through and clear interrupt specific resources and reset the structure
4814  * to pre-load conditions
4815  **/
4816 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4817 {
4818         int i;
4819
4820         i40e_free_misc_vector(pf);
4821
4822         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4823                       I40E_IWARP_IRQ_PILE_ID);
4824
4825         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4826         for (i = 0; i < pf->num_alloc_vsi; i++)
4827                 if (pf->vsi[i])
4828                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4829         i40e_reset_interrupt_capability(pf);
4830 }
4831
4832 /**
4833  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4834  * @vsi: the VSI being configured
4835  **/
4836 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4837 {
4838         int q_idx;
4839
4840         if (!vsi->netdev)
4841                 return;
4842
4843         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
4844                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
4845
4846                 if (q_vector->rx.ring || q_vector->tx.ring)
4847                         napi_enable(&q_vector->napi);
4848         }
4849 }
4850
4851 /**
4852  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4853  * @vsi: the VSI being configured
4854  **/
4855 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4856 {
4857         int q_idx;
4858
4859         if (!vsi->netdev)
4860                 return;
4861
4862         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
4863                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
4864
4865                 if (q_vector->rx.ring || q_vector->tx.ring)
4866                         napi_disable(&q_vector->napi);
4867         }
4868 }
4869
4870 /**
4871  * i40e_vsi_close - Shut down a VSI
4872  * @vsi: the vsi to be quelled
4873  **/
4874 static void i40e_vsi_close(struct i40e_vsi *vsi)
4875 {
4876         struct i40e_pf *pf = vsi->back;
4877         if (!test_and_set_bit(__I40E_VSI_DOWN, vsi->state))
4878                 i40e_down(vsi);
4879         i40e_vsi_free_irq(vsi);
4880         i40e_vsi_free_tx_resources(vsi);
4881         i40e_vsi_free_rx_resources(vsi);
4882         vsi->current_netdev_flags = 0;
4883         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
4884         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
4885                 set_bit(__I40E_CLIENT_RESET, pf->state);
4886 }
4887
4888 /**
4889  * i40e_quiesce_vsi - Pause a given VSI
4890  * @vsi: the VSI being paused
4891  **/
4892 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4893 {
4894         if (test_bit(__I40E_VSI_DOWN, vsi->state))
4895                 return;
4896
4897         set_bit(__I40E_VSI_NEEDS_RESTART, vsi->state);
4898         if (vsi->netdev && netif_running(vsi->netdev))
4899                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4900         else
4901                 i40e_vsi_close(vsi);
4902 }
4903
4904 /**
4905  * i40e_unquiesce_vsi - Resume a given VSI
4906  * @vsi: the VSI being resumed
4907  **/
4908 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4909 {
4910         if (!test_and_clear_bit(__I40E_VSI_NEEDS_RESTART, vsi->state))
4911                 return;
4912
4913         if (vsi->netdev && netif_running(vsi->netdev))
4914                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4915         else
4916                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4917 }
4918
4919 /**
4920  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4921  * @pf: the PF
4922  **/
4923 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4924 {
4925         int v;
4926
4927         for (v = 0; v < pf->num_alloc_vsi; v++) {
4928                 if (pf->vsi[v])
4929                         i40e_quiesce_vsi(pf->vsi[v]);
4930         }
4931 }
4932
4933 /**
4934  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4935  * @pf: the PF
4936  **/
4937 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4938 {
4939         int v;
4940
4941         for (v = 0; v < pf->num_alloc_vsi; v++) {
4942                 if (pf->vsi[v])
4943                         i40e_unquiesce_vsi(pf->vsi[v]);
4944         }
4945 }
4946
4947 /**
4948  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4949  * @vsi: the VSI being configured
4950  *
4951  * Wait until all queues on a given VSI have been disabled.
4952  **/
4953 int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4954 {
4955         struct i40e_pf *pf = vsi->back;
4956         int i, pf_q, ret;
4957
4958         pf_q = vsi->base_queue;
4959         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4960                 /* Check and wait for the Tx queue */
4961                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4962                 if (ret) {
4963                         dev_info(&pf->pdev->dev,
4964                                  "VSI seid %d Tx ring %d disable timeout\n",
4965                                  vsi->seid, pf_q);
4966                         return ret;
4967                 }
4968
4969                 if (!i40e_enabled_xdp_vsi(vsi))
4970                         goto wait_rx;
4971
4972                 /* Check and wait for the XDP Tx queue */
4973                 ret = i40e_pf_txq_wait(pf, pf_q + vsi->alloc_queue_pairs,
4974                                        false);
4975                 if (ret) {
4976                         dev_info(&pf->pdev->dev,
4977                                  "VSI seid %d XDP Tx ring %d disable timeout\n",
4978                                  vsi->seid, pf_q);
4979                         return ret;
4980                 }
4981 wait_rx:
4982                 /* Check and wait for the Rx queue */
4983                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4984                 if (ret) {
4985                         dev_info(&pf->pdev->dev,
4986                                  "VSI seid %d Rx ring %d disable timeout\n",
4987                                  vsi->seid, pf_q);
4988                         return ret;
4989                 }
4990         }
4991
4992         return 0;
4993 }
4994
4995 #ifdef CONFIG_I40E_DCB
4996 /**
4997  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4998  * @pf: the PF
4999  *
5000  * This function waits for the queues to be in disabled state for all the
5001  * VSIs that are managed by this PF.
5002  **/
5003 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
5004 {
5005         int v, ret = 0;
5006
5007         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5008                 if (pf->vsi[v]) {
5009                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
5010                         if (ret)
5011                                 break;
5012                 }
5013         }
5014
5015         return ret;
5016 }
5017
5018 #endif
5019
5020 /**
5021  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
5022  * @pf: pointer to PF
5023  *
5024  * Get TC map for ISCSI PF type that will include iSCSI TC
5025  * and LAN TC.
5026  **/
5027 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
5028 {
5029         struct i40e_dcb_app_priority_table app;
5030         struct i40e_hw *hw = &pf->hw;
5031         u8 enabled_tc = 1; /* TC0 is always enabled */
5032         u8 tc, i;
5033         /* Get the iSCSI APP TLV */
5034         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5035
5036         for (i = 0; i < dcbcfg->numapps; i++) {
5037                 app = dcbcfg->app[i];
5038                 if (app.selector == I40E_APP_SEL_TCPIP &&
5039                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
5040                         tc = dcbcfg->etscfg.prioritytable[app.priority];
5041                         enabled_tc |= BIT(tc);
5042                         break;
5043                 }
5044         }
5045
5046         return enabled_tc;
5047 }
5048
5049 /**
5050  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
5051  * @dcbcfg: the corresponding DCBx configuration structure
5052  *
5053  * Return the number of TCs from given DCBx configuration
5054  **/
5055 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
5056 {
5057         int i, tc_unused = 0;
5058         u8 num_tc = 0;
5059         u8 ret = 0;
5060
5061         /* Scan the ETS Config Priority Table to find
5062          * traffic class enabled for a given priority
5063          * and create a bitmask of enabled TCs
5064          */
5065         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
5066                 num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
5067
5068         /* Now scan the bitmask to check for
5069          * contiguous TCs starting with TC0
5070          */
5071         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5072                 if (num_tc & BIT(i)) {
5073                         if (!tc_unused) {
5074                                 ret++;
5075                         } else {
5076                                 pr_err("Non-contiguous TC - Disabling DCB\n");
5077                                 return 1;
5078                         }
5079                 } else {
5080                         tc_unused = 1;
5081                 }
5082         }
5083
5084         /* There is always at least TC0 */
5085         if (!ret)
5086                 ret = 1;
5087
5088         return ret;
5089 }
5090
5091 /**
5092  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
5093  * @dcbcfg: the corresponding DCBx configuration structure
5094  *
5095  * Query the current DCB configuration and return the number of
5096  * traffic classes enabled from the given DCBX config
5097  **/
5098 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
5099 {
5100         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
5101         u8 enabled_tc = 1;
5102         u8 i;
5103
5104         for (i = 0; i < num_tc; i++)
5105                 enabled_tc |= BIT(i);
5106
5107         return enabled_tc;
5108 }
5109
5110 /**
5111  * i40e_mqprio_get_enabled_tc - Get enabled traffic classes
5112  * @pf: PF being queried
5113  *
5114  * Query the current MQPRIO configuration and return the number of
5115  * traffic classes enabled.
5116  **/
5117 static u8 i40e_mqprio_get_enabled_tc(struct i40e_pf *pf)
5118 {
5119         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5120         u8 num_tc = vsi->mqprio_qopt.qopt.num_tc;
5121         u8 enabled_tc = 1, i;
5122
5123         for (i = 1; i < num_tc; i++)
5124                 enabled_tc |= BIT(i);
5125         return enabled_tc;
5126 }
5127
5128 /**
5129  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
5130  * @pf: PF being queried
5131  *
5132  * Return number of traffic classes enabled for the given PF
5133  **/
5134 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
5135 {
5136         struct i40e_hw *hw = &pf->hw;
5137         u8 i, enabled_tc = 1;
5138         u8 num_tc = 0;
5139         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5140
5141         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5142                 return pf->vsi[pf->lan_vsi]->mqprio_qopt.qopt.num_tc;
5143
5144         /* If neither MQPRIO nor DCB is enabled, then always use single TC */
5145         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
5146                 return 1;
5147
5148         /* SFP mode will be enabled for all TCs on port */
5149         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
5150                 return i40e_dcb_get_num_tc(dcbcfg);
5151
5152         /* MFP mode return count of enabled TCs for this PF */
5153         if (pf->hw.func_caps.iscsi)
5154                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
5155         else
5156                 return 1; /* Only TC0 */
5157
5158         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5159                 if (enabled_tc & BIT(i))
5160                         num_tc++;
5161         }
5162         return num_tc;
5163 }
5164
5165 /**
5166  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
5167  * @pf: PF being queried
5168  *
5169  * Return a bitmap for enabled traffic classes for this PF.
5170  **/
5171 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
5172 {
5173         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5174                 return i40e_mqprio_get_enabled_tc(pf);
5175
5176         /* If neither MQPRIO nor DCB is enabled for this PF then just return
5177          * default TC
5178          */
5179         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
5180                 return I40E_DEFAULT_TRAFFIC_CLASS;
5181
5182         /* SFP mode we want PF to be enabled for all TCs */
5183         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
5184                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
5185
5186         /* MFP enabled and iSCSI PF type */
5187         if (pf->hw.func_caps.iscsi)
5188                 return i40e_get_iscsi_tc_map(pf);
5189         else
5190                 return I40E_DEFAULT_TRAFFIC_CLASS;
5191 }
5192
5193 /**
5194  * i40e_vsi_get_bw_info - Query VSI BW Information
5195  * @vsi: the VSI being queried
5196  *
5197  * Returns 0 on success, negative value on failure
5198  **/
5199 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
5200 {
5201         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
5202         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
5203         struct i40e_pf *pf = vsi->back;
5204         struct i40e_hw *hw = &pf->hw;
5205         i40e_status ret;
5206         u32 tc_bw_max;
5207         int i;
5208
5209         /* Get the VSI level BW configuration */
5210         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
5211         if (ret) {
5212                 dev_info(&pf->pdev->dev,
5213                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
5214                          i40e_stat_str(&pf->hw, ret),
5215                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5216                 return -EINVAL;
5217         }
5218
5219         /* Get the VSI level BW configuration per TC */
5220         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
5221                                                NULL);
5222         if (ret) {
5223                 dev_info(&pf->pdev->dev,
5224                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
5225                          i40e_stat_str(&pf->hw, ret),
5226                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5227                 return -EINVAL;
5228         }
5229
5230         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
5231                 dev_info(&pf->pdev->dev,
5232                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
5233                          bw_config.tc_valid_bits,
5234                          bw_ets_config.tc_valid_bits);
5235                 /* Still continuing */
5236         }
5237
5238         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
5239         vsi->bw_max_quanta = bw_config.max_bw;
5240         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
5241                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
5242         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5243                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
5244                 vsi->bw_ets_limit_credits[i] =
5245                                         le16_to_cpu(bw_ets_config.credits[i]);
5246                 /* 3 bits out of 4 for each TC */
5247                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
5248         }
5249
5250         return 0;
5251 }
5252
5253 /**
5254  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
5255  * @vsi: the VSI being configured
5256  * @enabled_tc: TC bitmap
5257  * @bw_share: BW shared credits per TC
5258  *
5259  * Returns 0 on success, negative value on failure
5260  **/
5261 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
5262                                        u8 *bw_share)
5263 {
5264         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
5265         struct i40e_pf *pf = vsi->back;
5266         i40e_status ret;
5267         int i;
5268
5269         /* There is no need to reset BW when mqprio mode is on.  */
5270         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5271                 return 0;
5272         if (!vsi->mqprio_qopt.qopt.hw && !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5273                 ret = i40e_set_bw_limit(vsi, vsi->seid, 0);
5274                 if (ret)
5275                         dev_info(&pf->pdev->dev,
5276                                  "Failed to reset tx rate for vsi->seid %u\n",
5277                                  vsi->seid);
5278                 return ret;
5279         }
5280         bw_data.tc_valid_bits = enabled_tc;
5281         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5282                 bw_data.tc_bw_credits[i] = bw_share[i];
5283
5284         ret = i40e_aq_config_vsi_tc_bw(&pf->hw, vsi->seid, &bw_data, NULL);
5285         if (ret) {
5286                 dev_info(&pf->pdev->dev,
5287                          "AQ command Config VSI BW allocation per TC failed = %d\n",
5288                          pf->hw.aq.asq_last_status);
5289                 return -EINVAL;
5290         }
5291
5292         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5293                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
5294
5295         return 0;
5296 }
5297
5298 /**
5299  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
5300  * @vsi: the VSI being configured
5301  * @enabled_tc: TC map to be enabled
5302  *
5303  **/
5304 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
5305 {
5306         struct net_device *netdev = vsi->netdev;
5307         struct i40e_pf *pf = vsi->back;
5308         struct i40e_hw *hw = &pf->hw;
5309         u8 netdev_tc = 0;
5310         int i;
5311         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5312
5313         if (!netdev)
5314                 return;
5315
5316         if (!enabled_tc) {
5317                 netdev_reset_tc(netdev);
5318                 return;
5319         }
5320
5321         /* Set up actual enabled TCs on the VSI */
5322         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
5323                 return;
5324
5325         /* set per TC queues for the VSI */
5326         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5327                 /* Only set TC queues for enabled tcs
5328                  *
5329                  * e.g. For a VSI that has TC0 and TC3 enabled the
5330                  * enabled_tc bitmap would be 0x00001001; the driver
5331                  * will set the numtc for netdev as 2 that will be
5332                  * referenced by the netdev layer as TC 0 and 1.
5333                  */
5334                 if (vsi->tc_config.enabled_tc & BIT(i))
5335                         netdev_set_tc_queue(netdev,
5336                                         vsi->tc_config.tc_info[i].netdev_tc,
5337                                         vsi->tc_config.tc_info[i].qcount,
5338                                         vsi->tc_config.tc_info[i].qoffset);
5339         }
5340
5341         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5342                 return;
5343
5344         /* Assign UP2TC map for the VSI */
5345         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
5346                 /* Get the actual TC# for the UP */
5347                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
5348                 /* Get the mapped netdev TC# for the UP */
5349                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
5350                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
5351         }
5352 }
5353
5354 /**
5355  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
5356  * @vsi: the VSI being configured
5357  * @ctxt: the ctxt buffer returned from AQ VSI update param command
5358  **/
5359 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
5360                                       struct i40e_vsi_context *ctxt)
5361 {
5362         /* copy just the sections touched not the entire info
5363          * since not all sections are valid as returned by
5364          * update vsi params
5365          */
5366         vsi->info.mapping_flags = ctxt->info.mapping_flags;
5367         memcpy(&vsi->info.queue_mapping,
5368                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
5369         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
5370                sizeof(vsi->info.tc_mapping));
5371 }
5372
5373 /**
5374  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
5375  * @vsi: VSI to be configured
5376  * @enabled_tc: TC bitmap
5377  *
5378  * This configures a particular VSI for TCs that are mapped to the
5379  * given TC bitmap. It uses default bandwidth share for TCs across
5380  * VSIs to configure TC for a particular VSI.
5381  *
5382  * NOTE:
5383  * It is expected that the VSI queues have been quisced before calling
5384  * this function.
5385  **/
5386 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
5387 {
5388         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
5389         struct i40e_pf *pf = vsi->back;
5390         struct i40e_hw *hw = &pf->hw;
5391         struct i40e_vsi_context ctxt;
5392         int ret = 0;
5393         int i;
5394
5395         /* Check if enabled_tc is same as existing or new TCs */
5396         if (vsi->tc_config.enabled_tc == enabled_tc &&
5397             vsi->mqprio_qopt.mode != TC_MQPRIO_MODE_CHANNEL)
5398                 return ret;
5399
5400         /* Enable ETS TCs with equal BW Share for now across all VSIs */
5401         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5402                 if (enabled_tc & BIT(i))
5403                         bw_share[i] = 1;
5404         }
5405
5406         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
5407         if (ret) {
5408                 struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
5409
5410                 dev_info(&pf->pdev->dev,
5411                          "Failed configuring TC map %d for VSI %d\n",
5412                          enabled_tc, vsi->seid);
5413                 ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid,
5414                                                   &bw_config, NULL);
5415                 if (ret) {
5416                         dev_info(&pf->pdev->dev,
5417                                  "Failed querying vsi bw info, err %s aq_err %s\n",
5418                                  i40e_stat_str(hw, ret),
5419                                  i40e_aq_str(hw, hw->aq.asq_last_status));
5420                         goto out;
5421                 }
5422                 if ((bw_config.tc_valid_bits & enabled_tc) != enabled_tc) {
5423                         u8 valid_tc = bw_config.tc_valid_bits & enabled_tc;
5424
5425                         if (!valid_tc)
5426                                 valid_tc = bw_config.tc_valid_bits;
5427                         /* Always enable TC0, no matter what */
5428                         valid_tc |= 1;
5429                         dev_info(&pf->pdev->dev,
5430                                  "Requested tc 0x%x, but FW reports 0x%x as valid. Attempting to use 0x%x.\n",
5431                                  enabled_tc, bw_config.tc_valid_bits, valid_tc);
5432                         enabled_tc = valid_tc;
5433                 }
5434
5435                 ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
5436                 if (ret) {
5437                         dev_err(&pf->pdev->dev,
5438                                 "Unable to  configure TC map %d for VSI %d\n",
5439                                 enabled_tc, vsi->seid);
5440                         goto out;
5441                 }
5442         }
5443
5444         /* Update Queue Pairs Mapping for currently enabled UPs */
5445         ctxt.seid = vsi->seid;
5446         ctxt.pf_num = vsi->back->hw.pf_id;
5447         ctxt.vf_num = 0;
5448         ctxt.uplink_seid = vsi->uplink_seid;
5449         ctxt.info = vsi->info;
5450         if (vsi->back->flags & I40E_FLAG_TC_MQPRIO) {
5451                 ret = i40e_vsi_setup_queue_map_mqprio(vsi, &ctxt, enabled_tc);
5452                 if (ret)
5453                         goto out;
5454         } else {
5455                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
5456         }
5457
5458         /* On destroying the qdisc, reset vsi->rss_size, as number of enabled
5459          * queues changed.
5460          */
5461         if (!vsi->mqprio_qopt.qopt.hw && vsi->reconfig_rss) {
5462                 vsi->rss_size = min_t(int, vsi->back->alloc_rss_size,
5463                                       vsi->num_queue_pairs);
5464                 ret = i40e_vsi_config_rss(vsi);
5465                 if (ret) {
5466                         dev_info(&vsi->back->pdev->dev,
5467                                  "Failed to reconfig rss for num_queues\n");
5468                         return ret;
5469                 }
5470                 vsi->reconfig_rss = false;
5471         }
5472         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
5473                 ctxt.info.valid_sections |=
5474                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
5475                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
5476         }
5477
5478         /* Update the VSI after updating the VSI queue-mapping
5479          * information
5480          */
5481         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
5482         if (ret) {
5483                 dev_info(&pf->pdev->dev,
5484                          "Update vsi tc config failed, err %s aq_err %s\n",
5485                          i40e_stat_str(hw, ret),
5486                          i40e_aq_str(hw, hw->aq.asq_last_status));
5487                 goto out;
5488         }
5489         /* update the local VSI info with updated queue map */
5490         i40e_vsi_update_queue_map(vsi, &ctxt);
5491         vsi->info.valid_sections = 0;
5492
5493         /* Update current VSI BW information */
5494         ret = i40e_vsi_get_bw_info(vsi);
5495         if (ret) {
5496                 dev_info(&pf->pdev->dev,
5497                          "Failed updating vsi bw info, err %s aq_err %s\n",
5498                          i40e_stat_str(hw, ret),
5499                          i40e_aq_str(hw, hw->aq.asq_last_status));
5500                 goto out;
5501         }
5502
5503         /* Update the netdev TC setup */
5504         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
5505 out:
5506         return ret;
5507 }
5508
5509 /**
5510  * i40e_get_link_speed - Returns link speed for the interface
5511  * @vsi: VSI to be configured
5512  *
5513  **/
5514 static int i40e_get_link_speed(struct i40e_vsi *vsi)
5515 {
5516         struct i40e_pf *pf = vsi->back;
5517
5518         switch (pf->hw.phy.link_info.link_speed) {
5519         case I40E_LINK_SPEED_40GB:
5520                 return 40000;
5521         case I40E_LINK_SPEED_25GB:
5522                 return 25000;
5523         case I40E_LINK_SPEED_20GB:
5524                 return 20000;
5525         case I40E_LINK_SPEED_10GB:
5526                 return 10000;
5527         case I40E_LINK_SPEED_1GB:
5528                 return 1000;
5529         default:
5530                 return -EINVAL;
5531         }
5532 }
5533
5534 /**
5535  * i40e_set_bw_limit - setup BW limit for Tx traffic based on max_tx_rate
5536  * @vsi: VSI to be configured
5537  * @seid: seid of the channel/VSI
5538  * @max_tx_rate: max TX rate to be configured as BW limit
5539  *
5540  * Helper function to set BW limit for a given VSI
5541  **/
5542 int i40e_set_bw_limit(struct i40e_vsi *vsi, u16 seid, u64 max_tx_rate)
5543 {
5544         struct i40e_pf *pf = vsi->back;
5545         u64 credits = 0;
5546         int speed = 0;
5547         int ret = 0;
5548
5549         speed = i40e_get_link_speed(vsi);
5550         if (max_tx_rate > speed) {
5551                 dev_err(&pf->pdev->dev,
5552                         "Invalid max tx rate %llu specified for VSI seid %d.",
5553                         max_tx_rate, seid);
5554                 return -EINVAL;
5555         }
5556         if (max_tx_rate && max_tx_rate < 50) {
5557                 dev_warn(&pf->pdev->dev,
5558                          "Setting max tx rate to minimum usable value of 50Mbps.\n");
5559                 max_tx_rate = 50;
5560         }
5561
5562         /* Tx rate credits are in values of 50Mbps, 0 is disabled */
5563         credits = max_tx_rate;
5564         do_div(credits, I40E_BW_CREDIT_DIVISOR);
5565         ret = i40e_aq_config_vsi_bw_limit(&pf->hw, seid, credits,
5566                                           I40E_MAX_BW_INACTIVE_ACCUM, NULL);
5567         if (ret)
5568                 dev_err(&pf->pdev->dev,
5569                         "Failed set tx rate (%llu Mbps) for vsi->seid %u, err %s aq_err %s\n",
5570                         max_tx_rate, seid, i40e_stat_str(&pf->hw, ret),
5571                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5572         return ret;
5573 }
5574
5575 /**
5576  * i40e_remove_queue_channels - Remove queue channels for the TCs
5577  * @vsi: VSI to be configured
5578  *
5579  * Remove queue channels for the TCs
5580  **/
5581 static void i40e_remove_queue_channels(struct i40e_vsi *vsi)
5582 {
5583         enum i40e_admin_queue_err last_aq_status;
5584         struct i40e_cloud_filter *cfilter;
5585         struct i40e_channel *ch, *ch_tmp;
5586         struct i40e_pf *pf = vsi->back;
5587         struct hlist_node *node;
5588         int ret, i;
5589
5590         /* Reset rss size that was stored when reconfiguring rss for
5591          * channel VSIs with non-power-of-2 queue count.
5592          */
5593         vsi->current_rss_size = 0;
5594
5595         /* perform cleanup for channels if they exist */
5596         if (list_empty(&vsi->ch_list))
5597                 return;
5598
5599         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
5600                 struct i40e_vsi *p_vsi;
5601
5602                 list_del(&ch->list);
5603                 p_vsi = ch->parent_vsi;
5604                 if (!p_vsi || !ch->initialized) {
5605                         kfree(ch);
5606                         continue;
5607                 }
5608                 /* Reset queue contexts */
5609                 for (i = 0; i < ch->num_queue_pairs; i++) {
5610                         struct i40e_ring *tx_ring, *rx_ring;
5611                         u16 pf_q;
5612
5613                         pf_q = ch->base_queue + i;
5614                         tx_ring = vsi->tx_rings[pf_q];
5615                         tx_ring->ch = NULL;
5616
5617                         rx_ring = vsi->rx_rings[pf_q];
5618                         rx_ring->ch = NULL;
5619                 }
5620
5621                 /* Reset BW configured for this VSI via mqprio */
5622                 ret = i40e_set_bw_limit(vsi, ch->seid, 0);
5623                 if (ret)
5624                         dev_info(&vsi->back->pdev->dev,
5625                                  "Failed to reset tx rate for ch->seid %u\n",
5626                                  ch->seid);
5627
5628                 /* delete cloud filters associated with this channel */
5629                 hlist_for_each_entry_safe(cfilter, node,
5630                                           &pf->cloud_filter_list, cloud_node) {
5631                         if (cfilter->seid != ch->seid)
5632                                 continue;
5633
5634                         hash_del(&cfilter->cloud_node);
5635                         if (cfilter->dst_port)
5636                                 ret = i40e_add_del_cloud_filter_big_buf(vsi,
5637                                                                         cfilter,
5638                                                                         false);
5639                         else
5640                                 ret = i40e_add_del_cloud_filter(vsi, cfilter,
5641                                                                 false);
5642                         last_aq_status = pf->hw.aq.asq_last_status;
5643                         if (ret)
5644                                 dev_info(&pf->pdev->dev,
5645                                          "Failed to delete cloud filter, err %s aq_err %s\n",
5646                                          i40e_stat_str(&pf->hw, ret),
5647                                          i40e_aq_str(&pf->hw, last_aq_status));
5648                         kfree(cfilter);
5649                 }
5650
5651                 /* delete VSI from FW */
5652                 ret = i40e_aq_delete_element(&vsi->back->hw, ch->seid,
5653                                              NULL);
5654                 if (ret)
5655                         dev_err(&vsi->back->pdev->dev,
5656                                 "unable to remove channel (%d) for parent VSI(%d)\n",
5657                                 ch->seid, p_vsi->seid);
5658                 kfree(ch);
5659         }
5660         INIT_LIST_HEAD(&vsi->ch_list);
5661 }
5662
5663 /**
5664  * i40e_is_any_channel - channel exist or not
5665  * @vsi: ptr to VSI to which channels are associated with
5666  *
5667  * Returns true or false if channel(s) exist for associated VSI or not
5668  **/
5669 static bool i40e_is_any_channel(struct i40e_vsi *vsi)
5670 {
5671         struct i40e_channel *ch, *ch_tmp;
5672
5673         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
5674                 if (ch->initialized)
5675                         return true;
5676         }
5677
5678         return false;
5679 }
5680
5681 /**
5682  * i40e_get_max_queues_for_channel
5683  * @vsi: ptr to VSI to which channels are associated with
5684  *
5685  * Helper function which returns max value among the queue counts set on the
5686  * channels/TCs created.
5687  **/
5688 static int i40e_get_max_queues_for_channel(struct i40e_vsi *vsi)
5689 {
5690         struct i40e_channel *ch, *ch_tmp;
5691         int max = 0;
5692
5693         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
5694                 if (!ch->initialized)
5695                         continue;
5696                 if (ch->num_queue_pairs > max)
5697                         max = ch->num_queue_pairs;
5698         }
5699
5700         return max;
5701 }
5702
5703 /**
5704  * i40e_validate_num_queues - validate num_queues w.r.t channel
5705  * @pf: ptr to PF device
5706  * @num_queues: number of queues
5707  * @vsi: the parent VSI
5708  * @reconfig_rss: indicates should the RSS be reconfigured or not
5709  *
5710  * This function validates number of queues in the context of new channel
5711  * which is being established and determines if RSS should be reconfigured
5712  * or not for parent VSI.
5713  **/
5714 static int i40e_validate_num_queues(struct i40e_pf *pf, int num_queues,
5715                                     struct i40e_vsi *vsi, bool *reconfig_rss)
5716 {
5717         int max_ch_queues;
5718
5719         if (!reconfig_rss)
5720                 return -EINVAL;
5721
5722         *reconfig_rss = false;
5723         if (vsi->current_rss_size) {
5724                 if (num_queues > vsi->current_rss_size) {
5725                         dev_dbg(&pf->pdev->dev,
5726                                 "Error: num_queues (%d) > vsi's current_size(%d)\n",
5727                                 num_queues, vsi->current_rss_size);
5728                         return -EINVAL;
5729                 } else if ((num_queues < vsi->current_rss_size) &&
5730                            (!is_power_of_2(num_queues))) {
5731                         dev_dbg(&pf->pdev->dev,
5732                                 "Error: num_queues (%d) < vsi's current_size(%d), but not power of 2\n",
5733                                 num_queues, vsi->current_rss_size);
5734                         return -EINVAL;
5735                 }
5736         }
5737
5738         if (!is_power_of_2(num_queues)) {
5739                 /* Find the max num_queues configured for channel if channel
5740                  * exist.
5741                  * if channel exist, then enforce 'num_queues' to be more than
5742                  * max ever queues configured for channel.
5743                  */
5744                 max_ch_queues = i40e_get_max_queues_for_channel(vsi);
5745                 if (num_queues < max_ch_queues) {
5746                         dev_dbg(&pf->pdev->dev,
5747                                 "Error: num_queues (%d) < max queues configured for channel(%d)\n",
5748                                 num_queues, max_ch_queues);
5749                         return -EINVAL;
5750                 }
5751                 *reconfig_rss = true;
5752         }
5753
5754         return 0;
5755 }
5756
5757 /**
5758  * i40e_vsi_reconfig_rss - reconfig RSS based on specified rss_size
5759  * @vsi: the VSI being setup
5760  * @rss_size: size of RSS, accordingly LUT gets reprogrammed
5761  *
5762  * This function reconfigures RSS by reprogramming LUTs using 'rss_size'
5763  **/
5764 static int i40e_vsi_reconfig_rss(struct i40e_vsi *vsi, u16 rss_size)
5765 {
5766         struct i40e_pf *pf = vsi->back;
5767         u8 seed[I40E_HKEY_ARRAY_SIZE];
5768         struct i40e_hw *hw = &pf->hw;
5769         int local_rss_size;
5770         u8 *lut;
5771         int ret;
5772
5773         if (!vsi->rss_size)
5774                 return -EINVAL;
5775
5776         if (rss_size > vsi->rss_size)
5777                 return -EINVAL;
5778
5779         local_rss_size = min_t(int, vsi->rss_size, rss_size);
5780         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
5781         if (!lut)
5782                 return -ENOMEM;
5783
5784         /* Ignoring user configured lut if there is one */
5785         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, local_rss_size);
5786
5787         /* Use user configured hash key if there is one, otherwise
5788          * use default.
5789          */
5790         if (vsi->rss_hkey_user)
5791                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
5792         else
5793                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
5794
5795         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
5796         if (ret) {
5797                 dev_info(&pf->pdev->dev,
5798                          "Cannot set RSS lut, err %s aq_err %s\n",
5799                          i40e_stat_str(hw, ret),
5800                          i40e_aq_str(hw, hw->aq.asq_last_status));
5801                 kfree(lut);
5802                 return ret;
5803         }
5804         kfree(lut);
5805
5806         /* Do the update w.r.t. storing rss_size */
5807         if (!vsi->orig_rss_size)
5808                 vsi->orig_rss_size = vsi->rss_size;
5809         vsi->current_rss_size = local_rss_size;
5810
5811         return ret;
5812 }
5813
5814 /**
5815  * i40e_channel_setup_queue_map - Setup a channel queue map
5816  * @pf: ptr to PF device
5817  * @vsi: the VSI being setup
5818  * @ctxt: VSI context structure
5819  * @ch: ptr to channel structure
5820  *
5821  * Setup queue map for a specific channel
5822  **/
5823 static void i40e_channel_setup_queue_map(struct i40e_pf *pf,
5824                                          struct i40e_vsi_context *ctxt,
5825                                          struct i40e_channel *ch)
5826 {
5827         u16 qcount, qmap, sections = 0;
5828         u8 offset = 0;
5829         int pow;
5830
5831         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
5832         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
5833
5834         qcount = min_t(int, ch->num_queue_pairs, pf->num_lan_msix);
5835         ch->num_queue_pairs = qcount;
5836
5837         /* find the next higher power-of-2 of num queue pairs */
5838         pow = ilog2(qcount);
5839         if (!is_power_of_2(qcount))
5840                 pow++;
5841
5842         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
5843                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
5844
5845         /* Setup queue TC[0].qmap for given VSI context */
5846         ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
5847
5848         ctxt->info.up_enable_bits = 0x1; /* TC0 enabled */
5849         ctxt->info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
5850         ctxt->info.queue_mapping[0] = cpu_to_le16(ch->base_queue);
5851         ctxt->info.valid_sections |= cpu_to_le16(sections);
5852 }
5853
5854 /**
5855  * i40e_add_channel - add a channel by adding VSI
5856  * @pf: ptr to PF device
5857  * @uplink_seid: underlying HW switching element (VEB) ID
5858  * @ch: ptr to channel structure
5859  *
5860  * Add a channel (VSI) using add_vsi and queue_map
5861  **/
5862 static int i40e_add_channel(struct i40e_pf *pf, u16 uplink_seid,
5863                             struct i40e_channel *ch)
5864 {
5865         struct i40e_hw *hw = &pf->hw;
5866         struct i40e_vsi_context ctxt;
5867         u8 enabled_tc = 0x1; /* TC0 enabled */
5868         int ret;
5869
5870         if (ch->type != I40E_VSI_VMDQ2) {
5871                 dev_info(&pf->pdev->dev,
5872                          "add new vsi failed, ch->type %d\n", ch->type);
5873                 return -EINVAL;
5874         }
5875
5876         memset(&ctxt, 0, sizeof(ctxt));
5877         ctxt.pf_num = hw->pf_id;
5878         ctxt.vf_num = 0;
5879         ctxt.uplink_seid = uplink_seid;
5880         ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
5881         if (ch->type == I40E_VSI_VMDQ2)
5882                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
5883
5884         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED) {
5885                 ctxt.info.valid_sections |=
5886                      cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
5887                 ctxt.info.switch_id =
5888                    cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
5889         }
5890
5891         /* Set queue map for a given VSI context */
5892         i40e_channel_setup_queue_map(pf, &ctxt, ch);
5893
5894         /* Now time to create VSI */
5895         ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
5896         if (ret) {
5897                 dev_info(&pf->pdev->dev,
5898                          "add new vsi failed, err %s aq_err %s\n",
5899                          i40e_stat_str(&pf->hw, ret),
5900                          i40e_aq_str(&pf->hw,
5901                                      pf->hw.aq.asq_last_status));
5902                 return -ENOENT;
5903         }
5904
5905         /* Success, update channel, set enabled_tc only if the channel
5906          * is not a macvlan
5907          */
5908         ch->enabled_tc = !i40e_is_channel_macvlan(ch) && enabled_tc;
5909         ch->seid = ctxt.seid;
5910         ch->vsi_number = ctxt.vsi_number;
5911         ch->stat_counter_idx = cpu_to_le16(ctxt.info.stat_counter_idx);
5912
5913         /* copy just the sections touched not the entire info
5914          * since not all sections are valid as returned by
5915          * update vsi params
5916          */
5917         ch->info.mapping_flags = ctxt.info.mapping_flags;
5918         memcpy(&ch->info.queue_mapping,
5919                &ctxt.info.queue_mapping, sizeof(ctxt.info.queue_mapping));
5920         memcpy(&ch->info.tc_mapping, ctxt.info.tc_mapping,
5921                sizeof(ctxt.info.tc_mapping));
5922
5923         return 0;
5924 }
5925
5926 static int i40e_channel_config_bw(struct i40e_vsi *vsi, struct i40e_channel *ch,
5927                                   u8 *bw_share)
5928 {
5929         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
5930         i40e_status ret;
5931         int i;
5932
5933         bw_data.tc_valid_bits = ch->enabled_tc;
5934         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5935                 bw_data.tc_bw_credits[i] = bw_share[i];
5936
5937         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, ch->seid,
5938                                        &bw_data, NULL);
5939         if (ret) {
5940                 dev_info(&vsi->back->pdev->dev,
5941                          "Config VSI BW allocation per TC failed, aq_err: %d for new_vsi->seid %u\n",
5942                          vsi->back->hw.aq.asq_last_status, ch->seid);
5943                 return -EINVAL;
5944         }
5945
5946         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5947                 ch->info.qs_handle[i] = bw_data.qs_handles[i];
5948
5949         return 0;
5950 }
5951
5952 /**
5953  * i40e_channel_config_tx_ring - config TX ring associated with new channel
5954  * @pf: ptr to PF device
5955  * @vsi: the VSI being setup
5956  * @ch: ptr to channel structure
5957  *
5958  * Configure TX rings associated with channel (VSI) since queues are being
5959  * from parent VSI.
5960  **/
5961 static int i40e_channel_config_tx_ring(struct i40e_pf *pf,
5962                                        struct i40e_vsi *vsi,
5963                                        struct i40e_channel *ch)
5964 {
5965         i40e_status ret;
5966         int i;
5967         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
5968
5969         /* Enable ETS TCs with equal BW Share for now across all VSIs */
5970         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5971                 if (ch->enabled_tc & BIT(i))
5972                         bw_share[i] = 1;
5973         }
5974
5975         /* configure BW for new VSI */
5976         ret = i40e_channel_config_bw(vsi, ch, bw_share);
5977         if (ret) {
5978                 dev_info(&vsi->back->pdev->dev,
5979                          "Failed configuring TC map %d for channel (seid %u)\n",
5980                          ch->enabled_tc, ch->seid);
5981                 return ret;
5982         }
5983
5984         for (i = 0; i < ch->num_queue_pairs; i++) {
5985                 struct i40e_ring *tx_ring, *rx_ring;
5986                 u16 pf_q;
5987
5988                 pf_q = ch->base_queue + i;
5989
5990                 /* Get to TX ring ptr of main VSI, for re-setup TX queue
5991                  * context
5992                  */
5993                 tx_ring = vsi->tx_rings[pf_q];
5994                 tx_ring->ch = ch;
5995
5996                 /* Get the RX ring ptr */
5997                 rx_ring = vsi->rx_rings[pf_q];
5998                 rx_ring->ch = ch;
5999         }
6000
6001         return 0;
6002 }
6003
6004 /**
6005  * i40e_setup_hw_channel - setup new channel
6006  * @pf: ptr to PF device
6007  * @vsi: the VSI being setup
6008  * @ch: ptr to channel structure
6009  * @uplink_seid: underlying HW switching element (VEB) ID
6010  * @type: type of channel to be created (VMDq2/VF)
6011  *
6012  * Setup new channel (VSI) based on specified type (VMDq2/VF)
6013  * and configures TX rings accordingly
6014  **/
6015 static inline int i40e_setup_hw_channel(struct i40e_pf *pf,
6016                                         struct i40e_vsi *vsi,
6017                                         struct i40e_channel *ch,
6018                                         u16 uplink_seid, u8 type)
6019 {
6020         int ret;
6021
6022         ch->initialized = false;
6023         ch->base_queue = vsi->next_base_queue;
6024         ch->type = type;
6025
6026         /* Proceed with creation of channel (VMDq2) VSI */
6027         ret = i40e_add_channel(pf, uplink_seid, ch);
6028         if (ret) {
6029                 dev_info(&pf->pdev->dev,
6030                          "failed to add_channel using uplink_seid %u\n",
6031                          uplink_seid);
6032                 return ret;
6033         }
6034
6035         /* Mark the successful creation of channel */
6036         ch->initialized = true;
6037
6038         /* Reconfigure TX queues using QTX_CTL register */
6039         ret = i40e_channel_config_tx_ring(pf, vsi, ch);
6040         if (ret) {
6041                 dev_info(&pf->pdev->dev,
6042                          "failed to configure TX rings for channel %u\n",
6043                          ch->seid);
6044                 return ret;
6045         }
6046
6047         /* update 'next_base_queue' */
6048         vsi->next_base_queue = vsi->next_base_queue + ch->num_queue_pairs;
6049         dev_dbg(&pf->pdev->dev,
6050                 "Added channel: vsi_seid %u, vsi_number %u, stat_counter_idx %u, num_queue_pairs %u, pf->next_base_queue %d\n",
6051                 ch->seid, ch->vsi_number, ch->stat_counter_idx,
6052                 ch->num_queue_pairs,
6053                 vsi->next_base_queue);
6054         return ret;
6055 }
6056
6057 /**
6058  * i40e_setup_channel - setup new channel using uplink element
6059  * @pf: ptr to PF device
6060  * @type: type of channel to be created (VMDq2/VF)
6061  * @uplink_seid: underlying HW switching element (VEB) ID
6062  * @ch: ptr to channel structure
6063  *
6064  * Setup new channel (VSI) based on specified type (VMDq2/VF)
6065  * and uplink switching element (uplink_seid)
6066  **/
6067 static bool i40e_setup_channel(struct i40e_pf *pf, struct i40e_vsi *vsi,
6068                                struct i40e_channel *ch)
6069 {
6070         u8 vsi_type;
6071         u16 seid;
6072         int ret;
6073
6074         if (vsi->type == I40E_VSI_MAIN) {
6075                 vsi_type = I40E_VSI_VMDQ2;
6076         } else {
6077                 dev_err(&pf->pdev->dev, "unsupported parent vsi type(%d)\n",
6078                         vsi->type);
6079                 return false;
6080         }
6081
6082         /* underlying switching element */
6083         seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6084
6085         /* create channel (VSI), configure TX rings */
6086         ret = i40e_setup_hw_channel(pf, vsi, ch, seid, vsi_type);
6087         if (ret) {
6088                 dev_err(&pf->pdev->dev, "failed to setup hw_channel\n");
6089                 return false;
6090         }
6091
6092         return ch->initialized ? true : false;
6093 }
6094
6095 /**
6096  * i40e_validate_and_set_switch_mode - sets up switch mode correctly
6097  * @vsi: ptr to VSI which has PF backing
6098  *
6099  * Sets up switch mode correctly if it needs to be changed and perform
6100  * what are allowed modes.
6101  **/
6102 static int i40e_validate_and_set_switch_mode(struct i40e_vsi *vsi)
6103 {
6104         u8 mode;
6105         struct i40e_pf *pf = vsi->back;
6106         struct i40e_hw *hw = &pf->hw;
6107         int ret;
6108
6109         ret = i40e_get_capabilities(pf, i40e_aqc_opc_list_dev_capabilities);
6110         if (ret)
6111                 return -EINVAL;
6112
6113         if (hw->dev_caps.switch_mode) {
6114                 /* if switch mode is set, support mode2 (non-tunneled for
6115                  * cloud filter) for now
6116                  */
6117                 u32 switch_mode = hw->dev_caps.switch_mode &
6118                                   I40E_SWITCH_MODE_MASK;
6119                 if (switch_mode >= I40E_CLOUD_FILTER_MODE1) {
6120                         if (switch_mode == I40E_CLOUD_FILTER_MODE2)
6121                                 return 0;
6122                         dev_err(&pf->pdev->dev,
6123                                 "Invalid switch_mode (%d), only non-tunneled mode for cloud filter is supported\n",
6124                                 hw->dev_caps.switch_mode);
6125                         return -EINVAL;
6126                 }
6127         }
6128
6129         /* Set Bit 7 to be valid */
6130         mode = I40E_AQ_SET_SWITCH_BIT7_VALID;
6131
6132         /* Set L4type for TCP support */
6133         mode |= I40E_AQ_SET_SWITCH_L4_TYPE_TCP;
6134
6135         /* Set cloud filter mode */
6136         mode |= I40E_AQ_SET_SWITCH_MODE_NON_TUNNEL;
6137
6138         /* Prep mode field for set_switch_config */
6139         ret = i40e_aq_set_switch_config(hw, pf->last_sw_conf_flags,
6140                                         pf->last_sw_conf_valid_flags,
6141                                         mode, NULL);
6142         if (ret && hw->aq.asq_last_status != I40E_AQ_RC_ESRCH)
6143                 dev_err(&pf->pdev->dev,
6144                         "couldn't set switch config bits, err %s aq_err %s\n",
6145                         i40e_stat_str(hw, ret),
6146                         i40e_aq_str(hw,
6147                                     hw->aq.asq_last_status));
6148
6149         return ret;
6150 }
6151
6152 /**
6153  * i40e_create_queue_channel - function to create channel
6154  * @vsi: VSI to be configured
6155  * @ch: ptr to channel (it contains channel specific params)
6156  *
6157  * This function creates channel (VSI) using num_queues specified by user,
6158  * reconfigs RSS if needed.
6159  **/
6160 int i40e_create_queue_channel(struct i40e_vsi *vsi,
6161                               struct i40e_channel *ch)
6162 {
6163         struct i40e_pf *pf = vsi->back;
6164         bool reconfig_rss;
6165         int err;
6166
6167         if (!ch)
6168                 return -EINVAL;
6169
6170         if (!ch->num_queue_pairs) {
6171                 dev_err(&pf->pdev->dev, "Invalid num_queues requested: %d\n",
6172                         ch->num_queue_pairs);
6173                 return -EINVAL;
6174         }
6175
6176         /* validate user requested num_queues for channel */
6177         err = i40e_validate_num_queues(pf, ch->num_queue_pairs, vsi,
6178                                        &reconfig_rss);
6179         if (err) {
6180                 dev_info(&pf->pdev->dev, "Failed to validate num_queues (%d)\n",
6181                          ch->num_queue_pairs);
6182                 return -EINVAL;
6183         }
6184
6185         /* By default we are in VEPA mode, if this is the first VF/VMDq
6186          * VSI to be added switch to VEB mode.
6187          */
6188         if ((!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) ||
6189             (!i40e_is_any_channel(vsi))) {
6190                 if (!is_power_of_2(vsi->tc_config.tc_info[0].qcount)) {
6191                         dev_dbg(&pf->pdev->dev,
6192                                 "Failed to create channel. Override queues (%u) not power of 2\n",
6193                                 vsi->tc_config.tc_info[0].qcount);
6194                         return -EINVAL;
6195                 }
6196
6197                 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
6198                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
6199
6200                         if (vsi->type == I40E_VSI_MAIN) {
6201                                 if (pf->flags & I40E_FLAG_TC_MQPRIO)
6202                                         i40e_do_reset(pf, I40E_PF_RESET_FLAG,
6203                                                       true);
6204                                 else
6205                                         i40e_do_reset_safe(pf,
6206                                                            I40E_PF_RESET_FLAG);
6207                         }
6208                 }
6209                 /* now onwards for main VSI, number of queues will be value
6210                  * of TC0's queue count
6211                  */
6212         }
6213
6214         /* By this time, vsi->cnt_q_avail shall be set to non-zero and
6215          * it should be more than num_queues
6216          */
6217         if (!vsi->cnt_q_avail || vsi->cnt_q_avail < ch->num_queue_pairs) {
6218                 dev_dbg(&pf->pdev->dev,
6219                         "Error: cnt_q_avail (%u) less than num_queues %d\n",
6220                         vsi->cnt_q_avail, ch->num_queue_pairs);
6221                 return -EINVAL;
6222         }
6223
6224         /* reconfig_rss only if vsi type is MAIN_VSI */
6225         if (reconfig_rss && (vsi->type == I40E_VSI_MAIN)) {
6226                 err = i40e_vsi_reconfig_rss(vsi, ch->num_queue_pairs);
6227                 if (err) {
6228                         dev_info(&pf->pdev->dev,
6229                                  "Error: unable to reconfig rss for num_queues (%u)\n",
6230                                  ch->num_queue_pairs);
6231                         return -EINVAL;
6232                 }
6233         }
6234
6235         if (!i40e_setup_channel(pf, vsi, ch)) {
6236                 dev_info(&pf->pdev->dev, "Failed to setup channel\n");
6237                 return -EINVAL;
6238         }
6239
6240         dev_info(&pf->pdev->dev,
6241                  "Setup channel (id:%u) utilizing num_queues %d\n",
6242                  ch->seid, ch->num_queue_pairs);
6243
6244         /* configure VSI for BW limit */
6245         if (ch->max_tx_rate) {
6246                 u64 credits = ch->max_tx_rate;
6247
6248                 if (i40e_set_bw_limit(vsi, ch->seid, ch->max_tx_rate))
6249                         return -EINVAL;
6250
6251                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
6252                 dev_dbg(&pf->pdev->dev,
6253                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
6254                         ch->max_tx_rate,
6255                         credits,
6256                         ch->seid);
6257         }
6258
6259         /* in case of VF, this will be main SRIOV VSI */
6260         ch->parent_vsi = vsi;
6261
6262         /* and update main_vsi's count for queue_available to use */
6263         vsi->cnt_q_avail -= ch->num_queue_pairs;
6264
6265         return 0;
6266 }
6267
6268 /**
6269  * i40e_configure_queue_channels - Add queue channel for the given TCs
6270  * @vsi: VSI to be configured
6271  *
6272  * Configures queue channel mapping to the given TCs
6273  **/
6274 static int i40e_configure_queue_channels(struct i40e_vsi *vsi)
6275 {
6276         struct i40e_channel *ch;
6277         u64 max_rate = 0;
6278         int ret = 0, i;
6279
6280         /* Create app vsi with the TCs. Main VSI with TC0 is already set up */
6281         vsi->tc_seid_map[0] = vsi->seid;
6282         for (i = 1; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6283                 if (vsi->tc_config.enabled_tc & BIT(i)) {
6284                         ch = kzalloc(sizeof(*ch), GFP_KERNEL);
6285                         if (!ch) {
6286                                 ret = -ENOMEM;
6287                                 goto err_free;
6288                         }
6289
6290                         INIT_LIST_HEAD(&ch->list);
6291                         ch->num_queue_pairs =
6292                                 vsi->tc_config.tc_info[i].qcount;
6293                         ch->base_queue =
6294                                 vsi->tc_config.tc_info[i].qoffset;
6295
6296                         /* Bandwidth limit through tc interface is in bytes/s,
6297                          * change to Mbit/s
6298                          */
6299                         max_rate = vsi->mqprio_qopt.max_rate[i];
6300                         do_div(max_rate, I40E_BW_MBPS_DIVISOR);
6301                         ch->max_tx_rate = max_rate;
6302
6303                         list_add_tail(&ch->list, &vsi->ch_list);
6304
6305                         ret = i40e_create_queue_channel(vsi, ch);
6306                         if (ret) {
6307                                 dev_err(&vsi->back->pdev->dev,
6308                                         "Failed creating queue channel with TC%d: queues %d\n",
6309                                         i, ch->num_queue_pairs);
6310                                 goto err_free;
6311                         }
6312                         vsi->tc_seid_map[i] = ch->seid;
6313                 }
6314         }
6315         return ret;
6316
6317 err_free:
6318         i40e_remove_queue_channels(vsi);
6319         return ret;
6320 }
6321
6322 /**
6323  * i40e_veb_config_tc - Configure TCs for given VEB
6324  * @veb: given VEB
6325  * @enabled_tc: TC bitmap
6326  *
6327  * Configures given TC bitmap for VEB (switching) element
6328  **/
6329 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
6330 {
6331         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
6332         struct i40e_pf *pf = veb->pf;
6333         int ret = 0;
6334         int i;
6335
6336         /* No TCs or already enabled TCs just return */
6337         if (!enabled_tc || veb->enabled_tc == enabled_tc)
6338                 return ret;
6339
6340         bw_data.tc_valid_bits = enabled_tc;
6341         /* bw_data.absolute_credits is not set (relative) */
6342
6343         /* Enable ETS TCs with equal BW Share for now */
6344         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6345                 if (enabled_tc & BIT(i))
6346                         bw_data.tc_bw_share_credits[i] = 1;
6347         }
6348
6349         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
6350                                                    &bw_data, NULL);
6351         if (ret) {
6352                 dev_info(&pf->pdev->dev,
6353                          "VEB bw config failed, err %s aq_err %s\n",
6354                          i40e_stat_str(&pf->hw, ret),
6355                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6356                 goto out;
6357         }
6358
6359         /* Update the BW information */
6360         ret = i40e_veb_get_bw_info(veb);
6361         if (ret) {
6362                 dev_info(&pf->pdev->dev,
6363                          "Failed getting veb bw config, err %s aq_err %s\n",
6364                          i40e_stat_str(&pf->hw, ret),
6365                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6366         }
6367
6368 out:
6369         return ret;
6370 }
6371
6372 #ifdef CONFIG_I40E_DCB
6373 /**
6374  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
6375  * @pf: PF struct
6376  *
6377  * Reconfigure VEB/VSIs on a given PF; it is assumed that
6378  * the caller would've quiesce all the VSIs before calling
6379  * this function
6380  **/
6381 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
6382 {
6383         u8 tc_map = 0;
6384         int ret;
6385         u8 v;
6386
6387         /* Enable the TCs available on PF to all VEBs */
6388         tc_map = i40e_pf_get_tc_map(pf);
6389         for (v = 0; v < I40E_MAX_VEB; v++) {
6390                 if (!pf->veb[v])
6391                         continue;
6392                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
6393                 if (ret) {
6394                         dev_info(&pf->pdev->dev,
6395                                  "Failed configuring TC for VEB seid=%d\n",
6396                                  pf->veb[v]->seid);
6397                         /* Will try to configure as many components */
6398                 }
6399         }
6400
6401         /* Update each VSI */
6402         for (v = 0; v < pf->num_alloc_vsi; v++) {
6403                 if (!pf->vsi[v])
6404                         continue;
6405
6406                 /* - Enable all TCs for the LAN VSI
6407                  * - For all others keep them at TC0 for now
6408                  */
6409                 if (v == pf->lan_vsi)
6410                         tc_map = i40e_pf_get_tc_map(pf);
6411                 else
6412                         tc_map = I40E_DEFAULT_TRAFFIC_CLASS;
6413
6414                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
6415                 if (ret) {
6416                         dev_info(&pf->pdev->dev,
6417                                  "Failed configuring TC for VSI seid=%d\n",
6418                                  pf->vsi[v]->seid);
6419                         /* Will try to configure as many components */
6420                 } else {
6421                         /* Re-configure VSI vectors based on updated TC map */
6422                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
6423                         if (pf->vsi[v]->netdev)
6424                                 i40e_dcbnl_set_all(pf->vsi[v]);
6425                 }
6426         }
6427 }
6428
6429 /**
6430  * i40e_resume_port_tx - Resume port Tx
6431  * @pf: PF struct
6432  *
6433  * Resume a port's Tx and issue a PF reset in case of failure to
6434  * resume.
6435  **/
6436 static int i40e_resume_port_tx(struct i40e_pf *pf)
6437 {
6438         struct i40e_hw *hw = &pf->hw;
6439         int ret;
6440
6441         ret = i40e_aq_resume_port_tx(hw, NULL);
6442         if (ret) {
6443                 dev_info(&pf->pdev->dev,
6444                          "Resume Port Tx failed, err %s aq_err %s\n",
6445                           i40e_stat_str(&pf->hw, ret),
6446                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6447                 /* Schedule PF reset to recover */
6448                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
6449                 i40e_service_event_schedule(pf);
6450         }
6451
6452         return ret;
6453 }
6454
6455 /**
6456  * i40e_init_pf_dcb - Initialize DCB configuration
6457  * @pf: PF being configured
6458  *
6459  * Query the current DCB configuration and cache it
6460  * in the hardware structure
6461  **/
6462 static int i40e_init_pf_dcb(struct i40e_pf *pf)
6463 {
6464         struct i40e_hw *hw = &pf->hw;
6465         int err = 0;
6466
6467         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable
6468          * Also do not enable DCBx if FW LLDP agent is disabled
6469          */
6470         if ((pf->hw_features & I40E_HW_NO_DCB_SUPPORT) ||
6471             (pf->flags & I40E_FLAG_DISABLE_FW_LLDP)) {
6472                 dev_info(&pf->pdev->dev, "DCB is not supported or FW LLDP is disabled\n");
6473                 err = I40E_NOT_SUPPORTED;
6474                 goto out;
6475         }
6476
6477         err = i40e_init_dcb(hw, true);
6478         if (!err) {
6479                 /* Device/Function is not DCBX capable */
6480                 if ((!hw->func_caps.dcb) ||
6481                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
6482                         dev_info(&pf->pdev->dev,
6483                                  "DCBX offload is not supported or is disabled for this PF.\n");
6484                 } else {
6485                         /* When status is not DISABLED then DCBX in FW */
6486                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
6487                                        DCB_CAP_DCBX_VER_IEEE;
6488
6489                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
6490                         /* Enable DCB tagging only when more than one TC
6491                          * or explicitly disable if only one TC
6492                          */
6493                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
6494                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
6495                         else
6496                                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
6497                         dev_dbg(&pf->pdev->dev,
6498                                 "DCBX offload is supported for this PF.\n");
6499                 }
6500         } else if (pf->hw.aq.asq_last_status == I40E_AQ_RC_EPERM) {
6501                 dev_info(&pf->pdev->dev, "FW LLDP disabled for this PF.\n");
6502                 pf->flags |= I40E_FLAG_DISABLE_FW_LLDP;
6503         } else {
6504                 dev_info(&pf->pdev->dev,
6505                          "Query for DCB configuration failed, err %s aq_err %s\n",
6506                          i40e_stat_str(&pf->hw, err),
6507                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6508         }
6509
6510 out:
6511         return err;
6512 }
6513 #endif /* CONFIG_I40E_DCB */
6514
6515 /**
6516  * i40e_print_link_message - print link up or down
6517  * @vsi: the VSI for which link needs a message
6518  * @isup: true of link is up, false otherwise
6519  */
6520 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
6521 {
6522         enum i40e_aq_link_speed new_speed;
6523         struct i40e_pf *pf = vsi->back;
6524         char *speed = "Unknown";
6525         char *fc = "Unknown";
6526         char *fec = "";
6527         char *req_fec = "";
6528         char *an = "";
6529
6530         if (isup)
6531                 new_speed = pf->hw.phy.link_info.link_speed;
6532         else
6533                 new_speed = I40E_LINK_SPEED_UNKNOWN;
6534
6535         if ((vsi->current_isup == isup) && (vsi->current_speed == new_speed))
6536                 return;
6537         vsi->current_isup = isup;
6538         vsi->current_speed = new_speed;
6539         if (!isup) {
6540                 netdev_info(vsi->netdev, "NIC Link is Down\n");
6541                 return;
6542         }
6543
6544         /* Warn user if link speed on NPAR enabled partition is not at
6545          * least 10GB
6546          */
6547         if (pf->hw.func_caps.npar_enable &&
6548             (pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
6549              pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
6550                 netdev_warn(vsi->netdev,
6551                             "The partition detected link speed that is less than 10Gbps\n");
6552
6553         switch (pf->hw.phy.link_info.link_speed) {
6554         case I40E_LINK_SPEED_40GB:
6555                 speed = "40 G";
6556                 break;
6557         case I40E_LINK_SPEED_20GB:
6558                 speed = "20 G";
6559                 break;
6560         case I40E_LINK_SPEED_25GB:
6561                 speed = "25 G";
6562                 break;
6563         case I40E_LINK_SPEED_10GB:
6564                 speed = "10 G";
6565                 break;
6566         case I40E_LINK_SPEED_5GB:
6567                 speed = "5 G";
6568                 break;
6569         case I40E_LINK_SPEED_2_5GB:
6570                 speed = "2.5 G";
6571                 break;
6572         case I40E_LINK_SPEED_1GB:
6573                 speed = "1000 M";
6574                 break;
6575         case I40E_LINK_SPEED_100MB:
6576                 speed = "100 M";
6577                 break;
6578         default:
6579                 break;
6580         }
6581
6582         switch (pf->hw.fc.current_mode) {
6583         case I40E_FC_FULL:
6584                 fc = "RX/TX";
6585                 break;
6586         case I40E_FC_TX_PAUSE:
6587                 fc = "TX";
6588                 break;
6589         case I40E_FC_RX_PAUSE:
6590                 fc = "RX";
6591                 break;
6592         default:
6593                 fc = "None";
6594                 break;
6595         }
6596
6597         if (pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_25GB) {
6598                 req_fec = "None";
6599                 fec = "None";
6600                 an = "False";
6601
6602                 if (pf->hw.phy.link_info.an_info & I40E_AQ_AN_COMPLETED)
6603                         an = "True";
6604
6605                 if (pf->hw.phy.link_info.fec_info &
6606                     I40E_AQ_CONFIG_FEC_KR_ENA)
6607                         fec = "CL74 FC-FEC/BASE-R";
6608                 else if (pf->hw.phy.link_info.fec_info &
6609                          I40E_AQ_CONFIG_FEC_RS_ENA)
6610                         fec = "CL108 RS-FEC";
6611
6612                 /* 'CL108 RS-FEC' should be displayed when RS is requested, or
6613                  * both RS and FC are requested
6614                  */
6615                 if (vsi->back->hw.phy.link_info.req_fec_info &
6616                     (I40E_AQ_REQUEST_FEC_KR | I40E_AQ_REQUEST_FEC_RS)) {
6617                         if (vsi->back->hw.phy.link_info.req_fec_info &
6618                             I40E_AQ_REQUEST_FEC_RS)
6619                                 req_fec = "CL108 RS-FEC";
6620                         else
6621                                 req_fec = "CL74 FC-FEC/BASE-R";
6622                 }
6623                 netdev_info(vsi->netdev,
6624                             "NIC Link is Up, %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg: %s, Flow Control: %s\n",
6625                             speed, req_fec, fec, an, fc);
6626         } else {
6627                 netdev_info(vsi->netdev,
6628                             "NIC Link is Up, %sbps Full Duplex, Flow Control: %s\n",
6629                             speed, fc);
6630         }
6631
6632 }
6633
6634 /**
6635  * i40e_up_complete - Finish the last steps of bringing up a connection
6636  * @vsi: the VSI being configured
6637  **/
6638 static int i40e_up_complete(struct i40e_vsi *vsi)
6639 {
6640         struct i40e_pf *pf = vsi->back;
6641         int err;
6642
6643         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6644                 i40e_vsi_configure_msix(vsi);
6645         else
6646                 i40e_configure_msi_and_legacy(vsi);
6647
6648         /* start rings */
6649         err = i40e_vsi_start_rings(vsi);
6650         if (err)
6651                 return err;
6652
6653         clear_bit(__I40E_VSI_DOWN, vsi->state);
6654         i40e_napi_enable_all(vsi);
6655         i40e_vsi_enable_irq(vsi);
6656
6657         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
6658             (vsi->netdev)) {
6659                 i40e_print_link_message(vsi, true);
6660                 netif_tx_start_all_queues(vsi->netdev);
6661                 netif_carrier_on(vsi->netdev);
6662         }
6663
6664         /* replay FDIR SB filters */
6665         if (vsi->type == I40E_VSI_FDIR) {
6666                 /* reset fd counters */
6667                 pf->fd_add_err = 0;
6668                 pf->fd_atr_cnt = 0;
6669                 i40e_fdir_filter_restore(vsi);
6670         }
6671
6672         /* On the next run of the service_task, notify any clients of the new
6673          * opened netdev
6674          */
6675         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
6676         i40e_service_event_schedule(pf);
6677
6678         return 0;
6679 }
6680
6681 /**
6682  * i40e_vsi_reinit_locked - Reset the VSI
6683  * @vsi: the VSI being configured
6684  *
6685  * Rebuild the ring structs after some configuration
6686  * has changed, e.g. MTU size.
6687  **/
6688 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
6689 {
6690         struct i40e_pf *pf = vsi->back;
6691
6692         WARN_ON(in_interrupt());
6693         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state))
6694                 usleep_range(1000, 2000);
6695         i40e_down(vsi);
6696
6697         i40e_up(vsi);
6698         clear_bit(__I40E_CONFIG_BUSY, pf->state);
6699 }
6700
6701 /**
6702  * i40e_force_link_state - Force the link status
6703  * @pf: board private structure
6704  * @is_up: whether the link state should be forced up or down
6705  **/
6706 static i40e_status i40e_force_link_state(struct i40e_pf *pf, bool is_up)
6707 {
6708         struct i40e_aq_get_phy_abilities_resp abilities;
6709         struct i40e_aq_set_phy_config config = {0};
6710         bool non_zero_phy_type = is_up;
6711         struct i40e_hw *hw = &pf->hw;
6712         i40e_status err;
6713         u64 mask;
6714         u8 speed;
6715
6716         /* Card might've been put in an unstable state by other drivers
6717          * and applications, which causes incorrect speed values being
6718          * set on startup. In order to clear speed registers, we call
6719          * get_phy_capabilities twice, once to get initial state of
6720          * available speeds, and once to get current PHY config.
6721          */
6722         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities,
6723                                            NULL);
6724         if (err) {
6725                 dev_err(&pf->pdev->dev,
6726                         "failed to get phy cap., ret =  %s last_status =  %s\n",
6727                         i40e_stat_str(hw, err),
6728                         i40e_aq_str(hw, hw->aq.asq_last_status));
6729                 return err;
6730         }
6731         speed = abilities.link_speed;
6732
6733         /* Get the current phy config */
6734         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
6735                                            NULL);
6736         if (err) {
6737                 dev_err(&pf->pdev->dev,
6738                         "failed to get phy cap., ret =  %s last_status =  %s\n",
6739                         i40e_stat_str(hw, err),
6740                         i40e_aq_str(hw, hw->aq.asq_last_status));
6741                 return err;
6742         }
6743
6744         /* If link needs to go up, but was not forced to go down,
6745          * and its speed values are OK, no need for a flap
6746          * if non_zero_phy_type was set, still need to force up
6747          */
6748         if (pf->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED)
6749                 non_zero_phy_type = true;
6750         else if (is_up && abilities.phy_type != 0 && abilities.link_speed != 0)
6751                 return I40E_SUCCESS;
6752
6753         /* To force link we need to set bits for all supported PHY types,
6754          * but there are now more than 32, so we need to split the bitmap
6755          * across two fields.
6756          */
6757         mask = I40E_PHY_TYPES_BITMASK;
6758         config.phy_type =
6759                 non_zero_phy_type ? cpu_to_le32((u32)(mask & 0xffffffff)) : 0;
6760         config.phy_type_ext =
6761                 non_zero_phy_type ? (u8)((mask >> 32) & 0xff) : 0;
6762         /* Copy the old settings, except of phy_type */
6763         config.abilities = abilities.abilities;
6764         if (pf->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED) {
6765                 if (is_up)
6766                         config.abilities |= I40E_AQ_PHY_ENABLE_LINK;
6767                 else
6768                         config.abilities &= ~(I40E_AQ_PHY_ENABLE_LINK);
6769         }
6770         if (abilities.link_speed != 0)
6771                 config.link_speed = abilities.link_speed;
6772         else
6773                 config.link_speed = speed;
6774         config.eee_capability = abilities.eee_capability;
6775         config.eeer = abilities.eeer_val;
6776         config.low_power_ctrl = abilities.d3_lpan;
6777         config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
6778                             I40E_AQ_PHY_FEC_CONFIG_MASK;
6779         err = i40e_aq_set_phy_config(hw, &config, NULL);
6780
6781         if (err) {
6782                 dev_err(&pf->pdev->dev,
6783                         "set phy config ret =  %s last_status =  %s\n",
6784                         i40e_stat_str(&pf->hw, err),
6785                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6786                 return err;
6787         }
6788
6789         /* Update the link info */
6790         err = i40e_update_link_info(hw);
6791         if (err) {
6792                 /* Wait a little bit (on 40G cards it sometimes takes a really
6793                  * long time for link to come back from the atomic reset)
6794                  * and try once more
6795                  */
6796                 msleep(1000);
6797                 i40e_update_link_info(hw);
6798         }
6799
6800         i40e_aq_set_link_restart_an(hw, is_up, NULL);
6801
6802         return I40E_SUCCESS;
6803 }
6804
6805 /**
6806  * i40e_up - Bring the connection back up after being down
6807  * @vsi: the VSI being configured
6808  **/
6809 int i40e_up(struct i40e_vsi *vsi)
6810 {
6811         int err;
6812
6813         if (vsi->type == I40E_VSI_MAIN &&
6814             (vsi->back->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED ||
6815              vsi->back->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED))
6816                 i40e_force_link_state(vsi->back, true);
6817
6818         err = i40e_vsi_configure(vsi);
6819         if (!err)
6820                 err = i40e_up_complete(vsi);
6821
6822         return err;
6823 }
6824
6825 /**
6826  * i40e_down - Shutdown the connection processing
6827  * @vsi: the VSI being stopped
6828  **/
6829 void i40e_down(struct i40e_vsi *vsi)
6830 {
6831         int i;
6832
6833         /* It is assumed that the caller of this function
6834          * sets the vsi->state __I40E_VSI_DOWN bit.
6835          */
6836         if (vsi->netdev) {
6837                 netif_carrier_off(vsi->netdev);
6838                 netif_tx_disable(vsi->netdev);
6839         }
6840         i40e_vsi_disable_irq(vsi);
6841         i40e_vsi_stop_rings(vsi);
6842         if (vsi->type == I40E_VSI_MAIN &&
6843            (vsi->back->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED ||
6844             vsi->back->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED))
6845                 i40e_force_link_state(vsi->back, false);
6846         i40e_napi_disable_all(vsi);
6847
6848         for (i = 0; i < vsi->num_queue_pairs; i++) {
6849                 i40e_clean_tx_ring(vsi->tx_rings[i]);
6850                 if (i40e_enabled_xdp_vsi(vsi)) {
6851                         /* Make sure that in-progress ndo_xdp_xmit and
6852                          * ndo_xsk_wakeup calls are completed.
6853                          */
6854                         synchronize_rcu();
6855                         i40e_clean_tx_ring(vsi->xdp_rings[i]);
6856                 }
6857                 i40e_clean_rx_ring(vsi->rx_rings[i]);
6858         }
6859
6860 }
6861
6862 /**
6863  * i40e_validate_mqprio_qopt- validate queue mapping info
6864  * @vsi: the VSI being configured
6865  * @mqprio_qopt: queue parametrs
6866  **/
6867 static int i40e_validate_mqprio_qopt(struct i40e_vsi *vsi,
6868                                      struct tc_mqprio_qopt_offload *mqprio_qopt)
6869 {
6870         u64 sum_max_rate = 0;
6871         u64 max_rate = 0;
6872         int i;
6873
6874         if (mqprio_qopt->qopt.offset[0] != 0 ||
6875             mqprio_qopt->qopt.num_tc < 1 ||
6876             mqprio_qopt->qopt.num_tc > I40E_MAX_TRAFFIC_CLASS)
6877                 return -EINVAL;
6878         for (i = 0; ; i++) {
6879                 if (!mqprio_qopt->qopt.count[i])
6880                         return -EINVAL;
6881                 if (mqprio_qopt->min_rate[i]) {
6882                         dev_err(&vsi->back->pdev->dev,
6883                                 "Invalid min tx rate (greater than 0) specified\n");
6884                         return -EINVAL;
6885                 }
6886                 max_rate = mqprio_qopt->max_rate[i];
6887                 do_div(max_rate, I40E_BW_MBPS_DIVISOR);
6888                 sum_max_rate += max_rate;
6889
6890                 if (i >= mqprio_qopt->qopt.num_tc - 1)
6891                         break;
6892                 if (mqprio_qopt->qopt.offset[i + 1] !=
6893                     (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i]))
6894                         return -EINVAL;
6895         }
6896         if (vsi->num_queue_pairs <
6897             (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i])) {
6898                 return -EINVAL;
6899         }
6900         if (sum_max_rate > i40e_get_link_speed(vsi)) {
6901                 dev_err(&vsi->back->pdev->dev,
6902                         "Invalid max tx rate specified\n");
6903                 return -EINVAL;
6904         }
6905         return 0;
6906 }
6907
6908 /**
6909  * i40e_vsi_set_default_tc_config - set default values for tc configuration
6910  * @vsi: the VSI being configured
6911  **/
6912 static void i40e_vsi_set_default_tc_config(struct i40e_vsi *vsi)
6913 {
6914         u16 qcount;
6915         int i;
6916
6917         /* Only TC0 is enabled */
6918         vsi->tc_config.numtc = 1;
6919         vsi->tc_config.enabled_tc = 1;
6920         qcount = min_t(int, vsi->alloc_queue_pairs,
6921                        i40e_pf_get_max_q_per_tc(vsi->back));
6922         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6923                 /* For the TC that is not enabled set the offset to to default
6924                  * queue and allocate one queue for the given TC.
6925                  */
6926                 vsi->tc_config.tc_info[i].qoffset = 0;
6927                 if (i == 0)
6928                         vsi->tc_config.tc_info[i].qcount = qcount;
6929                 else
6930                         vsi->tc_config.tc_info[i].qcount = 1;
6931                 vsi->tc_config.tc_info[i].netdev_tc = 0;
6932         }
6933 }
6934
6935 /**
6936  * i40e_del_macvlan_filter
6937  * @hw: pointer to the HW structure
6938  * @seid: seid of the channel VSI
6939  * @macaddr: the mac address to apply as a filter
6940  * @aq_err: store the admin Q error
6941  *
6942  * This function deletes a mac filter on the channel VSI which serves as the
6943  * macvlan. Returns 0 on success.
6944  **/
6945 static i40e_status i40e_del_macvlan_filter(struct i40e_hw *hw, u16 seid,
6946                                            const u8 *macaddr, int *aq_err)
6947 {
6948         struct i40e_aqc_remove_macvlan_element_data element;
6949         i40e_status status;
6950
6951         memset(&element, 0, sizeof(element));
6952         ether_addr_copy(element.mac_addr, macaddr);
6953         element.vlan_tag = 0;
6954         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
6955         status = i40e_aq_remove_macvlan(hw, seid, &element, 1, NULL);
6956         *aq_err = hw->aq.asq_last_status;
6957
6958         return status;
6959 }
6960
6961 /**
6962  * i40e_add_macvlan_filter
6963  * @hw: pointer to the HW structure
6964  * @seid: seid of the channel VSI
6965  * @macaddr: the mac address to apply as a filter
6966  * @aq_err: store the admin Q error
6967  *
6968  * This function adds a mac filter on the channel VSI which serves as the
6969  * macvlan. Returns 0 on success.
6970  **/
6971 static i40e_status i40e_add_macvlan_filter(struct i40e_hw *hw, u16 seid,
6972                                            const u8 *macaddr, int *aq_err)
6973 {
6974         struct i40e_aqc_add_macvlan_element_data element;
6975         i40e_status status;
6976         u16 cmd_flags = 0;
6977
6978         ether_addr_copy(element.mac_addr, macaddr);
6979         element.vlan_tag = 0;
6980         element.queue_number = 0;
6981         element.match_method = I40E_AQC_MM_ERR_NO_RES;
6982         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
6983         element.flags = cpu_to_le16(cmd_flags);
6984         status = i40e_aq_add_macvlan(hw, seid, &element, 1, NULL);
6985         *aq_err = hw->aq.asq_last_status;
6986
6987         return status;
6988 }
6989
6990 /**
6991  * i40e_reset_ch_rings - Reset the queue contexts in a channel
6992  * @vsi: the VSI we want to access
6993  * @ch: the channel we want to access
6994  */
6995 static void i40e_reset_ch_rings(struct i40e_vsi *vsi, struct i40e_channel *ch)
6996 {
6997         struct i40e_ring *tx_ring, *rx_ring;
6998         u16 pf_q;
6999         int i;
7000
7001         for (i = 0; i < ch->num_queue_pairs; i++) {
7002                 pf_q = ch->base_queue + i;
7003                 tx_ring = vsi->tx_rings[pf_q];
7004                 tx_ring->ch = NULL;
7005                 rx_ring = vsi->rx_rings[pf_q];
7006                 rx_ring->ch = NULL;
7007         }
7008 }
7009
7010 /**
7011  * i40e_free_macvlan_channels
7012  * @vsi: the VSI we want to access
7013  *
7014  * This function frees the Qs of the channel VSI from
7015  * the stack and also deletes the channel VSIs which
7016  * serve as macvlans.
7017  */
7018 static void i40e_free_macvlan_channels(struct i40e_vsi *vsi)
7019 {
7020         struct i40e_channel *ch, *ch_tmp;
7021         int ret;
7022
7023         if (list_empty(&vsi->macvlan_list))
7024                 return;
7025
7026         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7027                 struct i40e_vsi *parent_vsi;
7028
7029                 if (i40e_is_channel_macvlan(ch)) {
7030                         i40e_reset_ch_rings(vsi, ch);
7031                         clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
7032                         netdev_unbind_sb_channel(vsi->netdev, ch->fwd->netdev);
7033                         netdev_set_sb_channel(ch->fwd->netdev, 0);
7034                         kfree(ch->fwd);
7035                         ch->fwd = NULL;
7036                 }
7037
7038                 list_del(&ch->list);
7039                 parent_vsi = ch->parent_vsi;
7040                 if (!parent_vsi || !ch->initialized) {
7041                         kfree(ch);
7042                         continue;
7043                 }
7044
7045                 /* remove the VSI */
7046                 ret = i40e_aq_delete_element(&vsi->back->hw, ch->seid,
7047                                              NULL);
7048                 if (ret)
7049                         dev_err(&vsi->back->pdev->dev,
7050                                 "unable to remove channel (%d) for parent VSI(%d)\n",
7051                                 ch->seid, parent_vsi->seid);
7052                 kfree(ch);
7053         }
7054         vsi->macvlan_cnt = 0;
7055 }
7056
7057 /**
7058  * i40e_fwd_ring_up - bring the macvlan device up
7059  * @vsi: the VSI we want to access
7060  * @vdev: macvlan netdevice
7061  * @fwd: the private fwd structure
7062  */
7063 static int i40e_fwd_ring_up(struct i40e_vsi *vsi, struct net_device *vdev,
7064                             struct i40e_fwd_adapter *fwd)
7065 {
7066         int ret = 0, num_tc = 1,  i, aq_err;
7067         struct i40e_channel *ch, *ch_tmp;
7068         struct i40e_pf *pf = vsi->back;
7069         struct i40e_hw *hw = &pf->hw;
7070
7071         if (list_empty(&vsi->macvlan_list))
7072                 return -EINVAL;
7073
7074         /* Go through the list and find an available channel */
7075         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7076                 if (!i40e_is_channel_macvlan(ch)) {
7077                         ch->fwd = fwd;
7078                         /* record configuration for macvlan interface in vdev */
7079                         for (i = 0; i < num_tc; i++)
7080                                 netdev_bind_sb_channel_queue(vsi->netdev, vdev,
7081                                                              i,
7082                                                              ch->num_queue_pairs,
7083                                                              ch->base_queue);
7084                         for (i = 0; i < ch->num_queue_pairs; i++) {
7085                                 struct i40e_ring *tx_ring, *rx_ring;
7086                                 u16 pf_q;
7087
7088                                 pf_q = ch->base_queue + i;
7089
7090                                 /* Get to TX ring ptr */
7091                                 tx_ring = vsi->tx_rings[pf_q];
7092                                 tx_ring->ch = ch;
7093
7094                                 /* Get the RX ring ptr */
7095                                 rx_ring = vsi->rx_rings[pf_q];
7096                                 rx_ring->ch = ch;
7097                         }
7098                         break;
7099                 }
7100         }
7101
7102         /* Guarantee all rings are updated before we update the
7103          * MAC address filter.
7104          */
7105         wmb();
7106
7107         /* Add a mac filter */
7108         ret = i40e_add_macvlan_filter(hw, ch->seid, vdev->dev_addr, &aq_err);
7109         if (ret) {
7110                 /* if we cannot add the MAC rule then disable the offload */
7111                 macvlan_release_l2fw_offload(vdev);
7112                 for (i = 0; i < ch->num_queue_pairs; i++) {
7113                         struct i40e_ring *rx_ring;
7114                         u16 pf_q;
7115
7116                         pf_q = ch->base_queue + i;
7117                         rx_ring = vsi->rx_rings[pf_q];
7118                         rx_ring->netdev = NULL;
7119                 }
7120                 dev_info(&pf->pdev->dev,
7121                          "Error adding mac filter on macvlan err %s, aq_err %s\n",
7122                           i40e_stat_str(hw, ret),
7123                           i40e_aq_str(hw, aq_err));
7124                 netdev_err(vdev, "L2fwd offload disabled to L2 filter error\n");
7125         }
7126
7127         return ret;
7128 }
7129
7130 /**
7131  * i40e_setup_macvlans - create the channels which will be macvlans
7132  * @vsi: the VSI we want to access
7133  * @macvlan_cnt: no. of macvlans to be setup
7134  * @qcnt: no. of Qs per macvlan
7135  * @vdev: macvlan netdevice
7136  */
7137 static int i40e_setup_macvlans(struct i40e_vsi *vsi, u16 macvlan_cnt, u16 qcnt,
7138                                struct net_device *vdev)
7139 {
7140         struct i40e_pf *pf = vsi->back;
7141         struct i40e_hw *hw = &pf->hw;
7142         struct i40e_vsi_context ctxt;
7143         u16 sections, qmap, num_qps;
7144         struct i40e_channel *ch;
7145         int i, pow, ret = 0;
7146         u8 offset = 0;
7147
7148         if (vsi->type != I40E_VSI_MAIN || !macvlan_cnt)
7149                 return -EINVAL;
7150
7151         num_qps = vsi->num_queue_pairs - (macvlan_cnt * qcnt);
7152
7153         /* find the next higher power-of-2 of num queue pairs */
7154         pow = fls(roundup_pow_of_two(num_qps) - 1);
7155
7156         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
7157                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
7158
7159         /* Setup context bits for the main VSI */
7160         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
7161         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
7162         memset(&ctxt, 0, sizeof(ctxt));
7163         ctxt.seid = vsi->seid;
7164         ctxt.pf_num = vsi->back->hw.pf_id;
7165         ctxt.vf_num = 0;
7166         ctxt.uplink_seid = vsi->uplink_seid;
7167         ctxt.info = vsi->info;
7168         ctxt.info.tc_mapping[0] = cpu_to_le16(qmap);
7169         ctxt.info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
7170         ctxt.info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
7171         ctxt.info.valid_sections |= cpu_to_le16(sections);
7172
7173         /* Reconfigure RSS for main VSI with new max queue count */
7174         vsi->rss_size = max_t(u16, num_qps, qcnt);
7175         ret = i40e_vsi_config_rss(vsi);
7176         if (ret) {
7177                 dev_info(&pf->pdev->dev,
7178                          "Failed to reconfig RSS for num_queues (%u)\n",
7179                          vsi->rss_size);
7180                 return ret;
7181         }
7182         vsi->reconfig_rss = true;
7183         dev_dbg(&vsi->back->pdev->dev,
7184                 "Reconfigured RSS with num_queues (%u)\n", vsi->rss_size);
7185         vsi->next_base_queue = num_qps;
7186         vsi->cnt_q_avail = vsi->num_queue_pairs - num_qps;
7187
7188         /* Update the VSI after updating the VSI queue-mapping
7189          * information
7190          */
7191         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7192         if (ret) {
7193                 dev_info(&pf->pdev->dev,
7194                          "Update vsi tc config failed, err %s aq_err %s\n",
7195                          i40e_stat_str(hw, ret),
7196                          i40e_aq_str(hw, hw->aq.asq_last_status));
7197                 return ret;
7198         }
7199         /* update the local VSI info with updated queue map */
7200         i40e_vsi_update_queue_map(vsi, &ctxt);
7201         vsi->info.valid_sections = 0;
7202
7203         /* Create channels for macvlans */
7204         INIT_LIST_HEAD(&vsi->macvlan_list);
7205         for (i = 0; i < macvlan_cnt; i++) {
7206                 ch = kzalloc(sizeof(*ch), GFP_KERNEL);
7207                 if (!ch) {
7208                         ret = -ENOMEM;
7209                         goto err_free;
7210                 }
7211                 INIT_LIST_HEAD(&ch->list);
7212                 ch->num_queue_pairs = qcnt;
7213                 if (!i40e_setup_channel(pf, vsi, ch)) {
7214                         ret = -EINVAL;
7215                         kfree(ch);
7216                         goto err_free;
7217                 }
7218                 ch->parent_vsi = vsi;
7219                 vsi->cnt_q_avail -= ch->num_queue_pairs;
7220                 vsi->macvlan_cnt++;
7221                 list_add_tail(&ch->list, &vsi->macvlan_list);
7222         }
7223
7224         return ret;
7225
7226 err_free:
7227         dev_info(&pf->pdev->dev, "Failed to setup macvlans\n");
7228         i40e_free_macvlan_channels(vsi);
7229
7230         return ret;
7231 }
7232
7233 /**
7234  * i40e_fwd_add - configure macvlans
7235  * @netdev: net device to configure
7236  * @vdev: macvlan netdevice
7237  **/
7238 static void *i40e_fwd_add(struct net_device *netdev, struct net_device *vdev)
7239 {
7240         struct i40e_netdev_priv *np = netdev_priv(netdev);
7241         u16 q_per_macvlan = 0, macvlan_cnt = 0, vectors;
7242         struct i40e_vsi *vsi = np->vsi;
7243         struct i40e_pf *pf = vsi->back;
7244         struct i40e_fwd_adapter *fwd;
7245         int avail_macvlan, ret;
7246
7247         if ((pf->flags & I40E_FLAG_DCB_ENABLED)) {
7248                 netdev_info(netdev, "Macvlans are not supported when DCB is enabled\n");
7249                 return ERR_PTR(-EINVAL);
7250         }
7251         if ((pf->flags & I40E_FLAG_TC_MQPRIO)) {
7252                 netdev_info(netdev, "Macvlans are not supported when HW TC offload is on\n");
7253                 return ERR_PTR(-EINVAL);
7254         }
7255         if (pf->num_lan_msix < I40E_MIN_MACVLAN_VECTORS) {
7256                 netdev_info(netdev, "Not enough vectors available to support macvlans\n");
7257                 return ERR_PTR(-EINVAL);
7258         }
7259
7260         /* The macvlan device has to be a single Q device so that the
7261          * tc_to_txq field can be reused to pick the tx queue.
7262          */
7263         if (netif_is_multiqueue(vdev))
7264                 return ERR_PTR(-ERANGE);
7265
7266         if (!vsi->macvlan_cnt) {
7267                 /* reserve bit 0 for the pf device */
7268                 set_bit(0, vsi->fwd_bitmask);
7269
7270                 /* Try to reserve as many queues as possible for macvlans. First
7271                  * reserve 3/4th of max vectors, then half, then quarter and
7272                  * calculate Qs per macvlan as you go
7273                  */
7274                 vectors = pf->num_lan_msix;
7275                 if (vectors <= I40E_MAX_MACVLANS && vectors > 64) {
7276                         /* allocate 4 Qs per macvlan and 32 Qs to the PF*/
7277                         q_per_macvlan = 4;
7278                         macvlan_cnt = (vectors - 32) / 4;
7279                 } else if (vectors <= 64 && vectors > 32) {
7280                         /* allocate 2 Qs per macvlan and 16 Qs to the PF*/
7281                         q_per_macvlan = 2;
7282                         macvlan_cnt = (vectors - 16) / 2;
7283                 } else if (vectors <= 32 && vectors > 16) {
7284                         /* allocate 1 Q per macvlan and 16 Qs to the PF*/
7285                         q_per_macvlan = 1;
7286                         macvlan_cnt = vectors - 16;
7287                 } else if (vectors <= 16 && vectors > 8) {
7288                         /* allocate 1 Q per macvlan and 8 Qs to the PF */
7289                         q_per_macvlan = 1;
7290                         macvlan_cnt = vectors - 8;
7291                 } else {
7292                         /* allocate 1 Q per macvlan and 1 Q to the PF */
7293                         q_per_macvlan = 1;
7294                         macvlan_cnt = vectors - 1;
7295                 }
7296
7297                 if (macvlan_cnt == 0)
7298                         return ERR_PTR(-EBUSY);
7299
7300                 /* Quiesce VSI queues */
7301                 i40e_quiesce_vsi(vsi);
7302
7303                 /* sets up the macvlans but does not "enable" them */
7304                 ret = i40e_setup_macvlans(vsi, macvlan_cnt, q_per_macvlan,
7305                                           vdev);
7306                 if (ret)
7307                         return ERR_PTR(ret);
7308
7309                 /* Unquiesce VSI */
7310                 i40e_unquiesce_vsi(vsi);
7311         }
7312         avail_macvlan = find_first_zero_bit(vsi->fwd_bitmask,
7313                                             vsi->macvlan_cnt);
7314         if (avail_macvlan >= I40E_MAX_MACVLANS)
7315                 return ERR_PTR(-EBUSY);
7316
7317         /* create the fwd struct */
7318         fwd = kzalloc(sizeof(*fwd), GFP_KERNEL);
7319         if (!fwd)
7320                 return ERR_PTR(-ENOMEM);
7321
7322         set_bit(avail_macvlan, vsi->fwd_bitmask);
7323         fwd->bit_no = avail_macvlan;
7324         netdev_set_sb_channel(vdev, avail_macvlan);
7325         fwd->netdev = vdev;
7326
7327         if (!netif_running(netdev))
7328                 return fwd;
7329
7330         /* Set fwd ring up */
7331         ret = i40e_fwd_ring_up(vsi, vdev, fwd);
7332         if (ret) {
7333                 /* unbind the queues and drop the subordinate channel config */
7334                 netdev_unbind_sb_channel(netdev, vdev);
7335                 netdev_set_sb_channel(vdev, 0);
7336
7337                 kfree(fwd);
7338                 return ERR_PTR(-EINVAL);
7339         }
7340
7341         return fwd;
7342 }
7343
7344 /**
7345  * i40e_del_all_macvlans - Delete all the mac filters on the channels
7346  * @vsi: the VSI we want to access
7347  */
7348 static void i40e_del_all_macvlans(struct i40e_vsi *vsi)
7349 {
7350         struct i40e_channel *ch, *ch_tmp;
7351         struct i40e_pf *pf = vsi->back;
7352         struct i40e_hw *hw = &pf->hw;
7353         int aq_err, ret = 0;
7354
7355         if (list_empty(&vsi->macvlan_list))
7356                 return;
7357
7358         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7359                 if (i40e_is_channel_macvlan(ch)) {
7360                         ret = i40e_del_macvlan_filter(hw, ch->seid,
7361                                                       i40e_channel_mac(ch),
7362                                                       &aq_err);
7363                         if (!ret) {
7364                                 /* Reset queue contexts */
7365                                 i40e_reset_ch_rings(vsi, ch);
7366                                 clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
7367                                 netdev_unbind_sb_channel(vsi->netdev,
7368                                                          ch->fwd->netdev);
7369                                 netdev_set_sb_channel(ch->fwd->netdev, 0);
7370                                 kfree(ch->fwd);
7371                                 ch->fwd = NULL;
7372                         }
7373                 }
7374         }
7375 }
7376
7377 /**
7378  * i40e_fwd_del - delete macvlan interfaces
7379  * @netdev: net device to configure
7380  * @vdev: macvlan netdevice
7381  */
7382 static void i40e_fwd_del(struct net_device *netdev, void *vdev)
7383 {
7384         struct i40e_netdev_priv *np = netdev_priv(netdev);
7385         struct i40e_fwd_adapter *fwd = vdev;
7386         struct i40e_channel *ch, *ch_tmp;
7387         struct i40e_vsi *vsi = np->vsi;
7388         struct i40e_pf *pf = vsi->back;
7389         struct i40e_hw *hw = &pf->hw;
7390         int aq_err, ret = 0;
7391
7392         /* Find the channel associated with the macvlan and del mac filter */
7393         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7394                 if (i40e_is_channel_macvlan(ch) &&
7395                     ether_addr_equal(i40e_channel_mac(ch),
7396                                      fwd->netdev->dev_addr)) {
7397                         ret = i40e_del_macvlan_filter(hw, ch->seid,
7398                                                       i40e_channel_mac(ch),
7399                                                       &aq_err);
7400                         if (!ret) {
7401                                 /* Reset queue contexts */
7402                                 i40e_reset_ch_rings(vsi, ch);
7403                                 clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
7404                                 netdev_unbind_sb_channel(netdev, fwd->netdev);
7405                                 netdev_set_sb_channel(fwd->netdev, 0);
7406                                 kfree(ch->fwd);
7407                                 ch->fwd = NULL;
7408                         } else {
7409                                 dev_info(&pf->pdev->dev,
7410                                          "Error deleting mac filter on macvlan err %s, aq_err %s\n",
7411                                           i40e_stat_str(hw, ret),
7412                                           i40e_aq_str(hw, aq_err));
7413                         }
7414                         break;
7415                 }
7416         }
7417 }
7418
7419 /**
7420  * i40e_setup_tc - configure multiple traffic classes
7421  * @netdev: net device to configure
7422  * @type_data: tc offload data
7423  **/
7424 static int i40e_setup_tc(struct net_device *netdev, void *type_data)
7425 {
7426         struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
7427         struct i40e_netdev_priv *np = netdev_priv(netdev);
7428         struct i40e_vsi *vsi = np->vsi;
7429         struct i40e_pf *pf = vsi->back;
7430         u8 enabled_tc = 0, num_tc, hw;
7431         bool need_reset = false;
7432         int old_queue_pairs;
7433         int ret = -EINVAL;
7434         u16 mode;
7435         int i;
7436
7437         old_queue_pairs = vsi->num_queue_pairs;
7438         num_tc = mqprio_qopt->qopt.num_tc;
7439         hw = mqprio_qopt->qopt.hw;
7440         mode = mqprio_qopt->mode;
7441         if (!hw) {
7442                 pf->flags &= ~I40E_FLAG_TC_MQPRIO;
7443                 memcpy(&vsi->mqprio_qopt, mqprio_qopt, sizeof(*mqprio_qopt));
7444                 goto config_tc;
7445         }
7446
7447         /* Check if MFP enabled */
7448         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
7449                 netdev_info(netdev,
7450                             "Configuring TC not supported in MFP mode\n");
7451                 return ret;
7452         }
7453         switch (mode) {
7454         case TC_MQPRIO_MODE_DCB:
7455                 pf->flags &= ~I40E_FLAG_TC_MQPRIO;
7456
7457                 /* Check if DCB enabled to continue */
7458                 if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
7459                         netdev_info(netdev,
7460                                     "DCB is not enabled for adapter\n");
7461                         return ret;
7462                 }
7463
7464                 /* Check whether tc count is within enabled limit */
7465                 if (num_tc > i40e_pf_get_num_tc(pf)) {
7466                         netdev_info(netdev,
7467                                     "TC count greater than enabled on link for adapter\n");
7468                         return ret;
7469                 }
7470                 break;
7471         case TC_MQPRIO_MODE_CHANNEL:
7472                 if (pf->flags & I40E_FLAG_DCB_ENABLED) {
7473                         netdev_info(netdev,
7474                                     "Full offload of TC Mqprio options is not supported when DCB is enabled\n");
7475                         return ret;
7476                 }
7477                 if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7478                         return ret;
7479                 ret = i40e_validate_mqprio_qopt(vsi, mqprio_qopt);
7480                 if (ret)
7481                         return ret;
7482                 memcpy(&vsi->mqprio_qopt, mqprio_qopt,
7483                        sizeof(*mqprio_qopt));
7484                 pf->flags |= I40E_FLAG_TC_MQPRIO;
7485                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
7486                 break;
7487         default:
7488                 return -EINVAL;
7489         }
7490
7491 config_tc:
7492         /* Generate TC map for number of tc requested */
7493         for (i = 0; i < num_tc; i++)
7494                 enabled_tc |= BIT(i);
7495
7496         /* Requesting same TC configuration as already enabled */
7497         if (enabled_tc == vsi->tc_config.enabled_tc &&
7498             mode != TC_MQPRIO_MODE_CHANNEL)
7499                 return 0;
7500
7501         /* Quiesce VSI queues */
7502         i40e_quiesce_vsi(vsi);
7503
7504         if (!hw && !(pf->flags & I40E_FLAG_TC_MQPRIO))
7505                 i40e_remove_queue_channels(vsi);
7506
7507         /* Configure VSI for enabled TCs */
7508         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7509         if (ret) {
7510                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
7511                             vsi->seid);
7512                 need_reset = true;
7513                 goto exit;
7514         } else {
7515                 dev_info(&vsi->back->pdev->dev,
7516                          "Setup channel (id:%u) utilizing num_queues %d\n",
7517                          vsi->seid, vsi->tc_config.tc_info[0].qcount);
7518         }
7519
7520         if (pf->flags & I40E_FLAG_TC_MQPRIO) {
7521                 if (vsi->mqprio_qopt.max_rate[0]) {
7522                         u64 max_tx_rate = vsi->mqprio_qopt.max_rate[0];
7523
7524                         do_div(max_tx_rate, I40E_BW_MBPS_DIVISOR);
7525                         ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
7526                         if (!ret) {
7527                                 u64 credits = max_tx_rate;
7528
7529                                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
7530                                 dev_dbg(&vsi->back->pdev->dev,
7531                                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
7532                                         max_tx_rate,
7533                                         credits,
7534                                         vsi->seid);
7535                         } else {
7536                                 need_reset = true;
7537                                 goto exit;
7538                         }
7539                 }
7540                 ret = i40e_configure_queue_channels(vsi);
7541                 if (ret) {
7542                         vsi->num_queue_pairs = old_queue_pairs;
7543                         netdev_info(netdev,
7544                                     "Failed configuring queue channels\n");
7545                         need_reset = true;
7546                         goto exit;
7547                 }
7548         }
7549
7550 exit:
7551         /* Reset the configuration data to defaults, only TC0 is enabled */
7552         if (need_reset) {
7553                 i40e_vsi_set_default_tc_config(vsi);
7554                 need_reset = false;
7555         }
7556
7557         /* Unquiesce VSI */
7558         i40e_unquiesce_vsi(vsi);
7559         return ret;
7560 }
7561
7562 /**
7563  * i40e_set_cld_element - sets cloud filter element data
7564  * @filter: cloud filter rule
7565  * @cld: ptr to cloud filter element data
7566  *
7567  * This is helper function to copy data into cloud filter element
7568  **/
7569 static inline void
7570 i40e_set_cld_element(struct i40e_cloud_filter *filter,
7571                      struct i40e_aqc_cloud_filters_element_data *cld)
7572 {
7573         int i, j;
7574         u32 ipa;
7575
7576         memset(cld, 0, sizeof(*cld));
7577         ether_addr_copy(cld->outer_mac, filter->dst_mac);
7578         ether_addr_copy(cld->inner_mac, filter->src_mac);
7579
7580         if (filter->n_proto != ETH_P_IP && filter->n_proto != ETH_P_IPV6)
7581                 return;
7582
7583         if (filter->n_proto == ETH_P_IPV6) {
7584 #define IPV6_MAX_INDEX  (ARRAY_SIZE(filter->dst_ipv6) - 1)
7585                 for (i = 0, j = 0; i < ARRAY_SIZE(filter->dst_ipv6);
7586                      i++, j += 2) {
7587                         ipa = be32_to_cpu(filter->dst_ipv6[IPV6_MAX_INDEX - i]);
7588                         ipa = cpu_to_le32(ipa);
7589                         memcpy(&cld->ipaddr.raw_v6.data[j], &ipa, sizeof(ipa));
7590                 }
7591         } else {
7592                 ipa = be32_to_cpu(filter->dst_ipv4);
7593                 memcpy(&cld->ipaddr.v4.data, &ipa, sizeof(ipa));
7594         }
7595
7596         cld->inner_vlan = cpu_to_le16(ntohs(filter->vlan_id));
7597
7598         /* tenant_id is not supported by FW now, once the support is enabled
7599          * fill the cld->tenant_id with cpu_to_le32(filter->tenant_id)
7600          */
7601         if (filter->tenant_id)
7602                 return;
7603 }
7604
7605 /**
7606  * i40e_add_del_cloud_filter - Add/del cloud filter
7607  * @vsi: pointer to VSI
7608  * @filter: cloud filter rule
7609  * @add: if true, add, if false, delete
7610  *
7611  * Add or delete a cloud filter for a specific flow spec.
7612  * Returns 0 if the filter were successfully added.
7613  **/
7614 int i40e_add_del_cloud_filter(struct i40e_vsi *vsi,
7615                               struct i40e_cloud_filter *filter, bool add)
7616 {
7617         struct i40e_aqc_cloud_filters_element_data cld_filter;
7618         struct i40e_pf *pf = vsi->back;
7619         int ret;
7620         static const u16 flag_table[128] = {
7621                 [I40E_CLOUD_FILTER_FLAGS_OMAC]  =
7622                         I40E_AQC_ADD_CLOUD_FILTER_OMAC,
7623                 [I40E_CLOUD_FILTER_FLAGS_IMAC]  =
7624                         I40E_AQC_ADD_CLOUD_FILTER_IMAC,
7625                 [I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN]  =
7626                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN,
7627                 [I40E_CLOUD_FILTER_FLAGS_IMAC_TEN_ID] =
7628                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_TEN_ID,
7629                 [I40E_CLOUD_FILTER_FLAGS_OMAC_TEN_ID_IMAC] =
7630                         I40E_AQC_ADD_CLOUD_FILTER_OMAC_TEN_ID_IMAC,
7631                 [I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN_TEN_ID] =
7632                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN_TEN_ID,
7633                 [I40E_CLOUD_FILTER_FLAGS_IIP] =
7634                         I40E_AQC_ADD_CLOUD_FILTER_IIP,
7635         };
7636
7637         if (filter->flags >= ARRAY_SIZE(flag_table))
7638                 return I40E_ERR_CONFIG;
7639
7640         /* copy element needed to add cloud filter from filter */
7641         i40e_set_cld_element(filter, &cld_filter);
7642
7643         if (filter->tunnel_type != I40E_CLOUD_TNL_TYPE_NONE)
7644                 cld_filter.flags = cpu_to_le16(filter->tunnel_type <<
7645                                              I40E_AQC_ADD_CLOUD_TNL_TYPE_SHIFT);
7646
7647         if (filter->n_proto == ETH_P_IPV6)
7648                 cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
7649                                                 I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
7650         else
7651                 cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
7652                                                 I40E_AQC_ADD_CLOUD_FLAGS_IPV4);
7653
7654         if (add)
7655                 ret = i40e_aq_add_cloud_filters(&pf->hw, filter->seid,
7656                                                 &cld_filter, 1);
7657         else
7658                 ret = i40e_aq_rem_cloud_filters(&pf->hw, filter->seid,
7659                                                 &cld_filter, 1);
7660         if (ret)
7661                 dev_dbg(&pf->pdev->dev,
7662                         "Failed to %s cloud filter using l4 port %u, err %d aq_err %d\n",
7663                         add ? "add" : "delete", filter->dst_port, ret,
7664                         pf->hw.aq.asq_last_status);
7665         else
7666                 dev_info(&pf->pdev->dev,
7667                          "%s cloud filter for VSI: %d\n",
7668                          add ? "Added" : "Deleted", filter->seid);
7669         return ret;
7670 }
7671
7672 /**
7673  * i40e_add_del_cloud_filter_big_buf - Add/del cloud filter using big_buf
7674  * @vsi: pointer to VSI
7675  * @filter: cloud filter rule
7676  * @add: if true, add, if false, delete
7677  *
7678  * Add or delete a cloud filter for a specific flow spec using big buffer.
7679  * Returns 0 if the filter were successfully added.
7680  **/
7681 int i40e_add_del_cloud_filter_big_buf(struct i40e_vsi *vsi,
7682                                       struct i40e_cloud_filter *filter,
7683                                       bool add)
7684 {
7685         struct i40e_aqc_cloud_filters_element_bb cld_filter;
7686         struct i40e_pf *pf = vsi->back;
7687         int ret;
7688
7689         /* Both (src/dst) valid mac_addr are not supported */
7690         if ((is_valid_ether_addr(filter->dst_mac) &&
7691              is_valid_ether_addr(filter->src_mac)) ||
7692             (is_multicast_ether_addr(filter->dst_mac) &&
7693              is_multicast_ether_addr(filter->src_mac)))
7694                 return -EOPNOTSUPP;
7695
7696         /* Big buffer cloud filter needs 'L4 port' to be non-zero. Also, UDP
7697          * ports are not supported via big buffer now.
7698          */
7699         if (!filter->dst_port || filter->ip_proto == IPPROTO_UDP)
7700                 return -EOPNOTSUPP;
7701
7702         /* adding filter using src_port/src_ip is not supported at this stage */
7703         if (filter->src_port || filter->src_ipv4 ||
7704             !ipv6_addr_any(&filter->ip.v6.src_ip6))
7705                 return -EOPNOTSUPP;
7706
7707         /* copy element needed to add cloud filter from filter */
7708         i40e_set_cld_element(filter, &cld_filter.element);
7709
7710         if (is_valid_ether_addr(filter->dst_mac) ||
7711             is_valid_ether_addr(filter->src_mac) ||
7712             is_multicast_ether_addr(filter->dst_mac) ||
7713             is_multicast_ether_addr(filter->src_mac)) {
7714                 /* MAC + IP : unsupported mode */
7715                 if (filter->dst_ipv4)
7716                         return -EOPNOTSUPP;
7717
7718                 /* since we validated that L4 port must be valid before
7719                  * we get here, start with respective "flags" value
7720                  * and update if vlan is present or not
7721                  */
7722                 cld_filter.element.flags =
7723                         cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_PORT);
7724
7725                 if (filter->vlan_id) {
7726                         cld_filter.element.flags =
7727                         cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_VLAN_PORT);
7728                 }
7729
7730         } else if (filter->dst_ipv4 ||
7731                    !ipv6_addr_any(&filter->ip.v6.dst_ip6)) {
7732                 cld_filter.element.flags =
7733                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_IP_PORT);
7734                 if (filter->n_proto == ETH_P_IPV6)
7735                         cld_filter.element.flags |=
7736                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
7737                 else
7738                         cld_filter.element.flags |=
7739                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV4);
7740         } else {
7741                 dev_err(&pf->pdev->dev,
7742                         "either mac or ip has to be valid for cloud filter\n");
7743                 return -EINVAL;
7744         }
7745
7746         /* Now copy L4 port in Byte 6..7 in general fields */
7747         cld_filter.general_fields[I40E_AQC_ADD_CLOUD_FV_FLU_0X16_WORD0] =
7748                                                 be16_to_cpu(filter->dst_port);
7749
7750         if (add) {
7751                 /* Validate current device switch mode, change if necessary */
7752                 ret = i40e_validate_and_set_switch_mode(vsi);
7753                 if (ret) {
7754                         dev_err(&pf->pdev->dev,
7755                                 "failed to set switch mode, ret %d\n",
7756                                 ret);
7757                         return ret;
7758                 }
7759
7760                 ret = i40e_aq_add_cloud_filters_bb(&pf->hw, filter->seid,
7761                                                    &cld_filter, 1);
7762         } else {
7763                 ret = i40e_aq_rem_cloud_filters_bb(&pf->hw, filter->seid,
7764                                                    &cld_filter, 1);
7765         }
7766
7767         if (ret)
7768                 dev_dbg(&pf->pdev->dev,
7769                         "Failed to %s cloud filter(big buffer) err %d aq_err %d\n",
7770                         add ? "add" : "delete", ret, pf->hw.aq.asq_last_status);
7771         else
7772                 dev_info(&pf->pdev->dev,
7773                          "%s cloud filter for VSI: %d, L4 port: %d\n",
7774                          add ? "add" : "delete", filter->seid,
7775                          ntohs(filter->dst_port));
7776         return ret;
7777 }
7778
7779 /**
7780  * i40e_parse_cls_flower - Parse tc flower filters provided by kernel
7781  * @vsi: Pointer to VSI
7782  * @cls_flower: Pointer to struct flow_cls_offload
7783  * @filter: Pointer to cloud filter structure
7784  *
7785  **/
7786 static int i40e_parse_cls_flower(struct i40e_vsi *vsi,
7787                                  struct flow_cls_offload *f,
7788                                  struct i40e_cloud_filter *filter)
7789 {
7790         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
7791         struct flow_dissector *dissector = rule->match.dissector;
7792         u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0;
7793         struct i40e_pf *pf = vsi->back;
7794         u8 field_flags = 0;
7795
7796         if (dissector->used_keys &
7797             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
7798               BIT(FLOW_DISSECTOR_KEY_BASIC) |
7799               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
7800               BIT(FLOW_DISSECTOR_KEY_VLAN) |
7801               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
7802               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
7803               BIT(FLOW_DISSECTOR_KEY_PORTS) |
7804               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID))) {
7805                 dev_err(&pf->pdev->dev, "Unsupported key used: 0x%x\n",
7806                         dissector->used_keys);
7807                 return -EOPNOTSUPP;
7808         }
7809
7810         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
7811                 struct flow_match_enc_keyid match;
7812
7813                 flow_rule_match_enc_keyid(rule, &match);
7814                 if (match.mask->keyid != 0)
7815                         field_flags |= I40E_CLOUD_FIELD_TEN_ID;
7816
7817                 filter->tenant_id = be32_to_cpu(match.key->keyid);
7818         }
7819
7820         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
7821                 struct flow_match_basic match;
7822
7823                 flow_rule_match_basic(rule, &match);
7824                 n_proto_key = ntohs(match.key->n_proto);
7825                 n_proto_mask = ntohs(match.mask->n_proto);
7826
7827                 if (n_proto_key == ETH_P_ALL) {
7828                         n_proto_key = 0;
7829                         n_proto_mask = 0;
7830                 }
7831                 filter->n_proto = n_proto_key & n_proto_mask;
7832                 filter->ip_proto = match.key->ip_proto;
7833         }
7834
7835         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
7836                 struct flow_match_eth_addrs match;
7837
7838                 flow_rule_match_eth_addrs(rule, &match);
7839
7840                 /* use is_broadcast and is_zero to check for all 0xf or 0 */
7841                 if (!is_zero_ether_addr(match.mask->dst)) {
7842                         if (is_broadcast_ether_addr(match.mask->dst)) {
7843                                 field_flags |= I40E_CLOUD_FIELD_OMAC;
7844                         } else {
7845                                 dev_err(&pf->pdev->dev, "Bad ether dest mask %pM\n",
7846                                         match.mask->dst);
7847                                 return I40E_ERR_CONFIG;
7848                         }
7849                 }
7850
7851                 if (!is_zero_ether_addr(match.mask->src)) {
7852                         if (is_broadcast_ether_addr(match.mask->src)) {
7853                                 field_flags |= I40E_CLOUD_FIELD_IMAC;
7854                         } else {
7855                                 dev_err(&pf->pdev->dev, "Bad ether src mask %pM\n",
7856                                         match.mask->src);
7857                                 return I40E_ERR_CONFIG;
7858                         }
7859                 }
7860                 ether_addr_copy(filter->dst_mac, match.key->dst);
7861                 ether_addr_copy(filter->src_mac, match.key->src);
7862         }
7863
7864         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
7865                 struct flow_match_vlan match;
7866
7867                 flow_rule_match_vlan(rule, &match);
7868                 if (match.mask->vlan_id) {
7869                         if (match.mask->vlan_id == VLAN_VID_MASK) {
7870                                 field_flags |= I40E_CLOUD_FIELD_IVLAN;
7871
7872                         } else {
7873                                 dev_err(&pf->pdev->dev, "Bad vlan mask 0x%04x\n",
7874                                         match.mask->vlan_id);
7875                                 return I40E_ERR_CONFIG;
7876                         }
7877                 }
7878
7879                 filter->vlan_id = cpu_to_be16(match.key->vlan_id);
7880         }
7881
7882         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
7883                 struct flow_match_control match;
7884
7885                 flow_rule_match_control(rule, &match);
7886                 addr_type = match.key->addr_type;
7887         }
7888
7889         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
7890                 struct flow_match_ipv4_addrs match;
7891
7892                 flow_rule_match_ipv4_addrs(rule, &match);
7893                 if (match.mask->dst) {
7894                         if (match.mask->dst == cpu_to_be32(0xffffffff)) {
7895                                 field_flags |= I40E_CLOUD_FIELD_IIP;
7896                         } else {
7897                                 dev_err(&pf->pdev->dev, "Bad ip dst mask %pI4b\n",
7898                                         &match.mask->dst);
7899                                 return I40E_ERR_CONFIG;
7900                         }
7901                 }
7902
7903                 if (match.mask->src) {
7904                         if (match.mask->src == cpu_to_be32(0xffffffff)) {
7905                                 field_flags |= I40E_CLOUD_FIELD_IIP;
7906                         } else {
7907                                 dev_err(&pf->pdev->dev, "Bad ip src mask %pI4b\n",
7908                                         &match.mask->src);
7909                                 return I40E_ERR_CONFIG;
7910                         }
7911                 }
7912
7913                 if (field_flags & I40E_CLOUD_FIELD_TEN_ID) {
7914                         dev_err(&pf->pdev->dev, "Tenant id not allowed for ip filter\n");
7915                         return I40E_ERR_CONFIG;
7916                 }
7917                 filter->dst_ipv4 = match.key->dst;
7918                 filter->src_ipv4 = match.key->src;
7919         }
7920
7921         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
7922                 struct flow_match_ipv6_addrs match;
7923
7924                 flow_rule_match_ipv6_addrs(rule, &match);
7925
7926                 /* src and dest IPV6 address should not be LOOPBACK
7927                  * (0:0:0:0:0:0:0:1), which can be represented as ::1
7928                  */
7929                 if (ipv6_addr_loopback(&match.key->dst) ||
7930                     ipv6_addr_loopback(&match.key->src)) {
7931                         dev_err(&pf->pdev->dev,
7932                                 "Bad ipv6, addr is LOOPBACK\n");
7933                         return I40E_ERR_CONFIG;
7934                 }
7935                 if (!ipv6_addr_any(&match.mask->dst) ||
7936                     !ipv6_addr_any(&match.mask->src))
7937                         field_flags |= I40E_CLOUD_FIELD_IIP;
7938
7939                 memcpy(&filter->src_ipv6, &match.key->src.s6_addr32,
7940                        sizeof(filter->src_ipv6));
7941                 memcpy(&filter->dst_ipv6, &match.key->dst.s6_addr32,
7942                        sizeof(filter->dst_ipv6));
7943         }
7944
7945         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
7946                 struct flow_match_ports match;
7947
7948                 flow_rule_match_ports(rule, &match);
7949                 if (match.mask->src) {
7950                         if (match.mask->src == cpu_to_be16(0xffff)) {
7951                                 field_flags |= I40E_CLOUD_FIELD_IIP;
7952                         } else {
7953                                 dev_err(&pf->pdev->dev, "Bad src port mask 0x%04x\n",
7954                                         be16_to_cpu(match.mask->src));
7955                                 return I40E_ERR_CONFIG;
7956                         }
7957                 }
7958
7959                 if (match.mask->dst) {
7960                         if (match.mask->dst == cpu_to_be16(0xffff)) {
7961                                 field_flags |= I40E_CLOUD_FIELD_IIP;
7962                         } else {
7963                                 dev_err(&pf->pdev->dev, "Bad dst port mask 0x%04x\n",
7964                                         be16_to_cpu(match.mask->dst));
7965                                 return I40E_ERR_CONFIG;
7966                         }
7967                 }
7968
7969                 filter->dst_port = match.key->dst;
7970                 filter->src_port = match.key->src;
7971
7972                 switch (filter->ip_proto) {
7973                 case IPPROTO_TCP:
7974                 case IPPROTO_UDP:
7975                         break;
7976                 default:
7977                         dev_err(&pf->pdev->dev,
7978                                 "Only UDP and TCP transport are supported\n");
7979                         return -EINVAL;
7980                 }
7981         }
7982         filter->flags = field_flags;
7983         return 0;
7984 }
7985
7986 /**
7987  * i40e_handle_tclass: Forward to a traffic class on the device
7988  * @vsi: Pointer to VSI
7989  * @tc: traffic class index on the device
7990  * @filter: Pointer to cloud filter structure
7991  *
7992  **/
7993 static int i40e_handle_tclass(struct i40e_vsi *vsi, u32 tc,
7994                               struct i40e_cloud_filter *filter)
7995 {
7996         struct i40e_channel *ch, *ch_tmp;
7997
7998         /* direct to a traffic class on the same device */
7999         if (tc == 0) {
8000                 filter->seid = vsi->seid;
8001                 return 0;
8002         } else if (vsi->tc_config.enabled_tc & BIT(tc)) {
8003                 if (!filter->dst_port) {
8004                         dev_err(&vsi->back->pdev->dev,
8005                                 "Specify destination port to direct to traffic class that is not default\n");
8006                         return -EINVAL;
8007                 }
8008                 if (list_empty(&vsi->ch_list))
8009                         return -EINVAL;
8010                 list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list,
8011                                          list) {
8012                         if (ch->seid == vsi->tc_seid_map[tc])
8013                                 filter->seid = ch->seid;
8014                 }
8015                 return 0;
8016         }
8017         dev_err(&vsi->back->pdev->dev, "TC is not enabled\n");
8018         return -EINVAL;
8019 }
8020
8021 /**
8022  * i40e_configure_clsflower - Configure tc flower filters
8023  * @vsi: Pointer to VSI
8024  * @cls_flower: Pointer to struct flow_cls_offload
8025  *
8026  **/
8027 static int i40e_configure_clsflower(struct i40e_vsi *vsi,
8028                                     struct flow_cls_offload *cls_flower)
8029 {
8030         int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid);
8031         struct i40e_cloud_filter *filter = NULL;
8032         struct i40e_pf *pf = vsi->back;
8033         int err = 0;
8034
8035         if (tc < 0) {
8036                 dev_err(&vsi->back->pdev->dev, "Invalid traffic class\n");
8037                 return -EOPNOTSUPP;
8038         }
8039
8040         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
8041             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
8042                 return -EBUSY;
8043
8044         if (pf->fdir_pf_active_filters ||
8045             (!hlist_empty(&pf->fdir_filter_list))) {
8046                 dev_err(&vsi->back->pdev->dev,
8047                         "Flow Director Sideband filters exists, turn ntuple off to configure cloud filters\n");
8048                 return -EINVAL;
8049         }
8050
8051         if (vsi->back->flags & I40E_FLAG_FD_SB_ENABLED) {
8052                 dev_err(&vsi->back->pdev->dev,
8053                         "Disable Flow Director Sideband, configuring Cloud filters via tc-flower\n");
8054                 vsi->back->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8055                 vsi->back->flags |= I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
8056         }
8057
8058         filter = kzalloc(sizeof(*filter), GFP_KERNEL);
8059         if (!filter)
8060                 return -ENOMEM;
8061
8062         filter->cookie = cls_flower->cookie;
8063
8064         err = i40e_parse_cls_flower(vsi, cls_flower, filter);
8065         if (err < 0)
8066                 goto err;
8067
8068         err = i40e_handle_tclass(vsi, tc, filter);
8069         if (err < 0)
8070                 goto err;
8071
8072         /* Add cloud filter */
8073         if (filter->dst_port)
8074                 err = i40e_add_del_cloud_filter_big_buf(vsi, filter, true);
8075         else
8076                 err = i40e_add_del_cloud_filter(vsi, filter, true);
8077
8078         if (err) {
8079                 dev_err(&pf->pdev->dev,
8080                         "Failed to add cloud filter, err %s\n",
8081                         i40e_stat_str(&pf->hw, err));
8082                 goto err;
8083         }
8084
8085         /* add filter to the ordered list */
8086         INIT_HLIST_NODE(&filter->cloud_node);
8087
8088         hlist_add_head(&filter->cloud_node, &pf->cloud_filter_list);
8089
8090         pf->num_cloud_filters++;
8091
8092         return err;
8093 err:
8094         kfree(filter);
8095         return err;
8096 }
8097
8098 /**
8099  * i40e_find_cloud_filter - Find the could filter in the list
8100  * @vsi: Pointer to VSI
8101  * @cookie: filter specific cookie
8102  *
8103  **/
8104 static struct i40e_cloud_filter *i40e_find_cloud_filter(struct i40e_vsi *vsi,
8105                                                         unsigned long *cookie)
8106 {
8107         struct i40e_cloud_filter *filter = NULL;
8108         struct hlist_node *node2;
8109
8110         hlist_for_each_entry_safe(filter, node2,
8111                                   &vsi->back->cloud_filter_list, cloud_node)
8112                 if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie)))
8113                         return filter;
8114         return NULL;
8115 }
8116
8117 /**
8118  * i40e_delete_clsflower - Remove tc flower filters
8119  * @vsi: Pointer to VSI
8120  * @cls_flower: Pointer to struct flow_cls_offload
8121  *
8122  **/
8123 static int i40e_delete_clsflower(struct i40e_vsi *vsi,
8124                                  struct flow_cls_offload *cls_flower)
8125 {
8126         struct i40e_cloud_filter *filter = NULL;
8127         struct i40e_pf *pf = vsi->back;
8128         int err = 0;
8129
8130         filter = i40e_find_cloud_filter(vsi, &cls_flower->cookie);
8131
8132         if (!filter)
8133                 return -EINVAL;
8134
8135         hash_del(&filter->cloud_node);
8136
8137         if (filter->dst_port)
8138                 err = i40e_add_del_cloud_filter_big_buf(vsi, filter, false);
8139         else
8140                 err = i40e_add_del_cloud_filter(vsi, filter, false);
8141
8142         kfree(filter);
8143         if (err) {
8144                 dev_err(&pf->pdev->dev,
8145                         "Failed to delete cloud filter, err %s\n",
8146                         i40e_stat_str(&pf->hw, err));
8147                 return i40e_aq_rc_to_posix(err, pf->hw.aq.asq_last_status);
8148         }
8149
8150         pf->num_cloud_filters--;
8151         if (!pf->num_cloud_filters)
8152                 if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
8153                     !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
8154                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8155                         pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
8156                         pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
8157                 }
8158         return 0;
8159 }
8160
8161 /**
8162  * i40e_setup_tc_cls_flower - flower classifier offloads
8163  * @netdev: net device to configure
8164  * @type_data: offload data
8165  **/
8166 static int i40e_setup_tc_cls_flower(struct i40e_netdev_priv *np,
8167                                     struct flow_cls_offload *cls_flower)
8168 {
8169         struct i40e_vsi *vsi = np->vsi;
8170
8171         switch (cls_flower->command) {
8172         case FLOW_CLS_REPLACE:
8173                 return i40e_configure_clsflower(vsi, cls_flower);
8174         case FLOW_CLS_DESTROY:
8175                 return i40e_delete_clsflower(vsi, cls_flower);
8176         case FLOW_CLS_STATS:
8177                 return -EOPNOTSUPP;
8178         default:
8179                 return -EOPNOTSUPP;
8180         }
8181 }
8182
8183 static int i40e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
8184                                   void *cb_priv)
8185 {
8186         struct i40e_netdev_priv *np = cb_priv;
8187
8188         if (!tc_cls_can_offload_and_chain0(np->vsi->netdev, type_data))
8189                 return -EOPNOTSUPP;
8190
8191         switch (type) {
8192         case TC_SETUP_CLSFLOWER:
8193                 return i40e_setup_tc_cls_flower(np, type_data);
8194
8195         default:
8196                 return -EOPNOTSUPP;
8197         }
8198 }
8199
8200 static LIST_HEAD(i40e_block_cb_list);
8201
8202 static int __i40e_setup_tc(struct net_device *netdev, enum tc_setup_type type,
8203                            void *type_data)
8204 {
8205         struct i40e_netdev_priv *np = netdev_priv(netdev);
8206
8207         switch (type) {
8208         case TC_SETUP_QDISC_MQPRIO:
8209                 return i40e_setup_tc(netdev, type_data);
8210         case TC_SETUP_BLOCK:
8211                 return flow_block_cb_setup_simple(type_data,
8212                                                   &i40e_block_cb_list,
8213                                                   i40e_setup_tc_block_cb,
8214                                                   np, np, true);
8215         default:
8216                 return -EOPNOTSUPP;
8217         }
8218 }
8219
8220 /**
8221  * i40e_open - Called when a network interface is made active
8222  * @netdev: network interface device structure
8223  *
8224  * The open entry point is called when a network interface is made
8225  * active by the system (IFF_UP).  At this point all resources needed
8226  * for transmit and receive operations are allocated, the interrupt
8227  * handler is registered with the OS, the netdev watchdog subtask is
8228  * enabled, and the stack is notified that the interface is ready.
8229  *
8230  * Returns 0 on success, negative value on failure
8231  **/
8232 int i40e_open(struct net_device *netdev)
8233 {
8234         struct i40e_netdev_priv *np = netdev_priv(netdev);
8235         struct i40e_vsi *vsi = np->vsi;
8236         struct i40e_pf *pf = vsi->back;
8237         int err;
8238
8239         /* disallow open during test or if eeprom is broken */
8240         if (test_bit(__I40E_TESTING, pf->state) ||
8241             test_bit(__I40E_BAD_EEPROM, pf->state))
8242                 return -EBUSY;
8243
8244         netif_carrier_off(netdev);
8245
8246         if (i40e_force_link_state(pf, true))
8247                 return -EAGAIN;
8248
8249         err = i40e_vsi_open(vsi);
8250         if (err)
8251                 return err;
8252
8253         /* configure global TSO hardware offload settings */
8254         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
8255                                                        TCP_FLAG_FIN) >> 16);
8256         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
8257                                                        TCP_FLAG_FIN |
8258                                                        TCP_FLAG_CWR) >> 16);
8259         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
8260
8261         udp_tunnel_get_rx_info(netdev);
8262
8263         return 0;
8264 }
8265
8266 /**
8267  * i40e_vsi_open -
8268  * @vsi: the VSI to open
8269  *
8270  * Finish initialization of the VSI.
8271  *
8272  * Returns 0 on success, negative value on failure
8273  *
8274  * Note: expects to be called while under rtnl_lock()
8275  **/
8276 int i40e_vsi_open(struct i40e_vsi *vsi)
8277 {
8278         struct i40e_pf *pf = vsi->back;
8279         char int_name[I40E_INT_NAME_STR_LEN];
8280         int err;
8281
8282         /* allocate descriptors */
8283         err = i40e_vsi_setup_tx_resources(vsi);
8284         if (err)
8285                 goto err_setup_tx;
8286         err = i40e_vsi_setup_rx_resources(vsi);
8287         if (err)
8288                 goto err_setup_rx;
8289
8290         err = i40e_vsi_configure(vsi);
8291         if (err)
8292                 goto err_setup_rx;
8293
8294         if (vsi->netdev) {
8295                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
8296                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
8297                 err = i40e_vsi_request_irq(vsi, int_name);
8298                 if (err)
8299                         goto err_setup_rx;
8300
8301                 /* Notify the stack of the actual queue counts. */
8302                 err = netif_set_real_num_tx_queues(vsi->netdev,
8303                                                    vsi->num_queue_pairs);
8304                 if (err)
8305                         goto err_set_queues;
8306
8307                 err = netif_set_real_num_rx_queues(vsi->netdev,
8308                                                    vsi->num_queue_pairs);
8309                 if (err)
8310                         goto err_set_queues;
8311
8312         } else if (vsi->type == I40E_VSI_FDIR) {
8313                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
8314                          dev_driver_string(&pf->pdev->dev),
8315                          dev_name(&pf->pdev->dev));
8316                 err = i40e_vsi_request_irq(vsi, int_name);
8317
8318         } else {
8319                 err = -EINVAL;
8320                 goto err_setup_rx;
8321         }
8322
8323         err = i40e_up_complete(vsi);
8324         if (err)
8325                 goto err_up_complete;
8326
8327         return 0;
8328
8329 err_up_complete:
8330         i40e_down(vsi);
8331 err_set_queues:
8332         i40e_vsi_free_irq(vsi);
8333 err_setup_rx:
8334         i40e_vsi_free_rx_resources(vsi);
8335 err_setup_tx:
8336         i40e_vsi_free_tx_resources(vsi);
8337         if (vsi == pf->vsi[pf->lan_vsi])
8338                 i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
8339
8340         return err;
8341 }
8342
8343 /**
8344  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
8345  * @pf: Pointer to PF
8346  *
8347  * This function destroys the hlist where all the Flow Director
8348  * filters were saved.
8349  **/
8350 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
8351 {
8352         struct i40e_fdir_filter *filter;
8353         struct i40e_flex_pit *pit_entry, *tmp;
8354         struct hlist_node *node2;
8355
8356         hlist_for_each_entry_safe(filter, node2,
8357                                   &pf->fdir_filter_list, fdir_node) {
8358                 hlist_del(&filter->fdir_node);
8359                 kfree(filter);
8360         }
8361
8362         list_for_each_entry_safe(pit_entry, tmp, &pf->l3_flex_pit_list, list) {
8363                 list_del(&pit_entry->list);
8364                 kfree(pit_entry);
8365         }
8366         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
8367
8368         list_for_each_entry_safe(pit_entry, tmp, &pf->l4_flex_pit_list, list) {
8369                 list_del(&pit_entry->list);
8370                 kfree(pit_entry);
8371         }
8372         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
8373
8374         pf->fdir_pf_active_filters = 0;
8375         pf->fd_tcp4_filter_cnt = 0;
8376         pf->fd_udp4_filter_cnt = 0;
8377         pf->fd_sctp4_filter_cnt = 0;
8378         pf->fd_ip4_filter_cnt = 0;
8379
8380         /* Reprogram the default input set for TCP/IPv4 */
8381         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
8382                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
8383                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8384
8385         /* Reprogram the default input set for UDP/IPv4 */
8386         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_UDP,
8387                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
8388                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8389
8390         /* Reprogram the default input set for SCTP/IPv4 */
8391         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_SCTP,
8392                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
8393                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8394
8395         /* Reprogram the default input set for Other/IPv4 */
8396         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_OTHER,
8397                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
8398
8399         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
8400                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
8401 }
8402
8403 /**
8404  * i40e_cloud_filter_exit - Cleans up the cloud filters
8405  * @pf: Pointer to PF
8406  *
8407  * This function destroys the hlist where all the cloud filters
8408  * were saved.
8409  **/
8410 static void i40e_cloud_filter_exit(struct i40e_pf *pf)
8411 {
8412         struct i40e_cloud_filter *cfilter;
8413         struct hlist_node *node;
8414
8415         hlist_for_each_entry_safe(cfilter, node,
8416                                   &pf->cloud_filter_list, cloud_node) {
8417                 hlist_del(&cfilter->cloud_node);
8418                 kfree(cfilter);
8419         }
8420         pf->num_cloud_filters = 0;
8421
8422         if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
8423             !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
8424                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8425                 pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
8426                 pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
8427         }
8428 }
8429
8430 /**
8431  * i40e_close - Disables a network interface
8432  * @netdev: network interface device structure
8433  *
8434  * The close entry point is called when an interface is de-activated
8435  * by the OS.  The hardware is still under the driver's control, but
8436  * this netdev interface is disabled.
8437  *
8438  * Returns 0, this is not allowed to fail
8439  **/
8440 int i40e_close(struct net_device *netdev)
8441 {
8442         struct i40e_netdev_priv *np = netdev_priv(netdev);
8443         struct i40e_vsi *vsi = np->vsi;
8444
8445         i40e_vsi_close(vsi);
8446
8447         return 0;
8448 }
8449
8450 /**
8451  * i40e_do_reset - Start a PF or Core Reset sequence
8452  * @pf: board private structure
8453  * @reset_flags: which reset is requested
8454  * @lock_acquired: indicates whether or not the lock has been acquired
8455  * before this function was called.
8456  *
8457  * The essential difference in resets is that the PF Reset
8458  * doesn't clear the packet buffers, doesn't reset the PE
8459  * firmware, and doesn't bother the other PFs on the chip.
8460  **/
8461 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags, bool lock_acquired)
8462 {
8463         u32 val;
8464
8465         WARN_ON(in_interrupt());
8466
8467
8468         /* do the biggest reset indicated */
8469         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
8470
8471                 /* Request a Global Reset
8472                  *
8473                  * This will start the chip's countdown to the actual full
8474                  * chip reset event, and a warning interrupt to be sent
8475                  * to all PFs, including the requestor.  Our handler
8476                  * for the warning interrupt will deal with the shutdown
8477                  * and recovery of the switch setup.
8478                  */
8479                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
8480                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8481                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
8482                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
8483
8484         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
8485
8486                 /* Request a Core Reset
8487                  *
8488                  * Same as Global Reset, except does *not* include the MAC/PHY
8489                  */
8490                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
8491                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8492                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
8493                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
8494                 i40e_flush(&pf->hw);
8495
8496         } else if (reset_flags & I40E_PF_RESET_FLAG) {
8497
8498                 /* Request a PF Reset
8499                  *
8500                  * Resets only the PF-specific registers
8501                  *
8502                  * This goes directly to the tear-down and rebuild of
8503                  * the switch, since we need to do all the recovery as
8504                  * for the Core Reset.
8505                  */
8506                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
8507                 i40e_handle_reset_warning(pf, lock_acquired);
8508
8509                 dev_info(&pf->pdev->dev,
8510                          pf->flags & I40E_FLAG_DISABLE_FW_LLDP ?
8511                          "FW LLDP is disabled\n" :
8512                          "FW LLDP is enabled\n");
8513
8514         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
8515                 int v;
8516
8517                 /* Find the VSI(s) that requested a re-init */
8518                 dev_info(&pf->pdev->dev,
8519                          "VSI reinit requested\n");
8520                 for (v = 0; v < pf->num_alloc_vsi; v++) {
8521                         struct i40e_vsi *vsi = pf->vsi[v];
8522
8523                         if (vsi != NULL &&
8524                             test_and_clear_bit(__I40E_VSI_REINIT_REQUESTED,
8525                                                vsi->state))
8526                                 i40e_vsi_reinit_locked(pf->vsi[v]);
8527                 }
8528         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
8529                 int v;
8530
8531                 /* Find the VSI(s) that needs to be brought down */
8532                 dev_info(&pf->pdev->dev, "VSI down requested\n");
8533                 for (v = 0; v < pf->num_alloc_vsi; v++) {
8534                         struct i40e_vsi *vsi = pf->vsi[v];
8535
8536                         if (vsi != NULL &&
8537                             test_and_clear_bit(__I40E_VSI_DOWN_REQUESTED,
8538                                                vsi->state)) {
8539                                 set_bit(__I40E_VSI_DOWN, vsi->state);
8540                                 i40e_down(vsi);
8541                         }
8542                 }
8543         } else {
8544                 dev_info(&pf->pdev->dev,
8545                          "bad reset request 0x%08x\n", reset_flags);
8546         }
8547 }
8548
8549 #ifdef CONFIG_I40E_DCB
8550 /**
8551  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
8552  * @pf: board private structure
8553  * @old_cfg: current DCB config
8554  * @new_cfg: new DCB config
8555  **/
8556 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
8557                             struct i40e_dcbx_config *old_cfg,
8558                             struct i40e_dcbx_config *new_cfg)
8559 {
8560         bool need_reconfig = false;
8561
8562         /* Check if ETS configuration has changed */
8563         if (memcmp(&new_cfg->etscfg,
8564                    &old_cfg->etscfg,
8565                    sizeof(new_cfg->etscfg))) {
8566                 /* If Priority Table has changed reconfig is needed */
8567                 if (memcmp(&new_cfg->etscfg.prioritytable,
8568                            &old_cfg->etscfg.prioritytable,
8569                            sizeof(new_cfg->etscfg.prioritytable))) {
8570                         need_reconfig = true;
8571                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
8572                 }
8573
8574                 if (memcmp(&new_cfg->etscfg.tcbwtable,
8575                            &old_cfg->etscfg.tcbwtable,
8576                            sizeof(new_cfg->etscfg.tcbwtable)))
8577                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
8578
8579                 if (memcmp(&new_cfg->etscfg.tsatable,
8580                            &old_cfg->etscfg.tsatable,
8581                            sizeof(new_cfg->etscfg.tsatable)))
8582                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
8583         }
8584
8585         /* Check if PFC configuration has changed */
8586         if (memcmp(&new_cfg->pfc,
8587                    &old_cfg->pfc,
8588                    sizeof(new_cfg->pfc))) {
8589                 need_reconfig = true;
8590                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
8591         }
8592
8593         /* Check if APP Table has changed */
8594         if (memcmp(&new_cfg->app,
8595                    &old_cfg->app,
8596                    sizeof(new_cfg->app))) {
8597                 need_reconfig = true;
8598                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
8599         }
8600
8601         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
8602         return need_reconfig;
8603 }
8604
8605 /**
8606  * i40e_handle_lldp_event - Handle LLDP Change MIB event
8607  * @pf: board private structure
8608  * @e: event info posted on ARQ
8609  **/
8610 static int i40e_handle_lldp_event(struct i40e_pf *pf,
8611                                   struct i40e_arq_event_info *e)
8612 {
8613         struct i40e_aqc_lldp_get_mib *mib =
8614                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
8615         struct i40e_hw *hw = &pf->hw;
8616         struct i40e_dcbx_config tmp_dcbx_cfg;
8617         bool need_reconfig = false;
8618         int ret = 0;
8619         u8 type;
8620
8621         /* Not DCB capable or capability disabled */
8622         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
8623                 return ret;
8624
8625         /* Ignore if event is not for Nearest Bridge */
8626         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
8627                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
8628         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
8629         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
8630                 return ret;
8631
8632         /* Check MIB Type and return if event for Remote MIB update */
8633         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
8634         dev_dbg(&pf->pdev->dev,
8635                 "LLDP event mib type %s\n", type ? "remote" : "local");
8636         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
8637                 /* Update the remote cached instance and return */
8638                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
8639                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
8640                                 &hw->remote_dcbx_config);
8641                 goto exit;
8642         }
8643
8644         /* Store the old configuration */
8645         tmp_dcbx_cfg = hw->local_dcbx_config;
8646
8647         /* Reset the old DCBx configuration data */
8648         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
8649         /* Get updated DCBX data from firmware */
8650         ret = i40e_get_dcb_config(&pf->hw);
8651         if (ret) {
8652                 dev_info(&pf->pdev->dev,
8653                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
8654                          i40e_stat_str(&pf->hw, ret),
8655                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8656                 goto exit;
8657         }
8658
8659         /* No change detected in DCBX configs */
8660         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
8661                     sizeof(tmp_dcbx_cfg))) {
8662                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
8663                 goto exit;
8664         }
8665
8666         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
8667                                                &hw->local_dcbx_config);
8668
8669         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
8670
8671         if (!need_reconfig)
8672                 goto exit;
8673
8674         /* Enable DCB tagging only when more than one TC */
8675         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
8676                 pf->flags |= I40E_FLAG_DCB_ENABLED;
8677         else
8678                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8679
8680         set_bit(__I40E_PORT_SUSPENDED, pf->state);
8681         /* Reconfiguration needed quiesce all VSIs */
8682         i40e_pf_quiesce_all_vsi(pf);
8683
8684         /* Changes in configuration update VEB/VSI */
8685         i40e_dcb_reconfigure(pf);
8686
8687         ret = i40e_resume_port_tx(pf);
8688
8689         clear_bit(__I40E_PORT_SUSPENDED, pf->state);
8690         /* In case of error no point in resuming VSIs */
8691         if (ret)
8692                 goto exit;
8693
8694         /* Wait for the PF's queues to be disabled */
8695         ret = i40e_pf_wait_queues_disabled(pf);
8696         if (ret) {
8697                 /* Schedule PF reset to recover */
8698                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
8699                 i40e_service_event_schedule(pf);
8700         } else {
8701                 i40e_pf_unquiesce_all_vsi(pf);
8702                 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
8703                 set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
8704         }
8705
8706 exit:
8707         return ret;
8708 }
8709 #endif /* CONFIG_I40E_DCB */
8710
8711 /**
8712  * i40e_do_reset_safe - Protected reset path for userland calls.
8713  * @pf: board private structure
8714  * @reset_flags: which reset is requested
8715  *
8716  **/
8717 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
8718 {
8719         rtnl_lock();
8720         i40e_do_reset(pf, reset_flags, true);
8721         rtnl_unlock();
8722 }
8723
8724 /**
8725  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
8726  * @pf: board private structure
8727  * @e: event info posted on ARQ
8728  *
8729  * Handler for LAN Queue Overflow Event generated by the firmware for PF
8730  * and VF queues
8731  **/
8732 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
8733                                            struct i40e_arq_event_info *e)
8734 {
8735         struct i40e_aqc_lan_overflow *data =
8736                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
8737         u32 queue = le32_to_cpu(data->prtdcb_rupto);
8738         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
8739         struct i40e_hw *hw = &pf->hw;
8740         struct i40e_vf *vf;
8741         u16 vf_id;
8742
8743         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
8744                 queue, qtx_ctl);
8745
8746         /* Queue belongs to VF, find the VF and issue VF reset */
8747         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
8748             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
8749                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
8750                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
8751                 vf_id -= hw->func_caps.vf_base_id;
8752                 vf = &pf->vf[vf_id];
8753                 i40e_vc_notify_vf_reset(vf);
8754                 /* Allow VF to process pending reset notification */
8755                 msleep(20);
8756                 i40e_reset_vf(vf, false);
8757         }
8758 }
8759
8760 /**
8761  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
8762  * @pf: board private structure
8763  **/
8764 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
8765 {
8766         u32 val, fcnt_prog;
8767
8768         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
8769         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
8770         return fcnt_prog;
8771 }
8772
8773 /**
8774  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
8775  * @pf: board private structure
8776  **/
8777 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
8778 {
8779         u32 val, fcnt_prog;
8780
8781         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
8782         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
8783                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
8784                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
8785         return fcnt_prog;
8786 }
8787
8788 /**
8789  * i40e_get_global_fd_count - Get total FD filters programmed on device
8790  * @pf: board private structure
8791  **/
8792 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
8793 {
8794         u32 val, fcnt_prog;
8795
8796         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
8797         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
8798                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
8799                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
8800         return fcnt_prog;
8801 }
8802
8803 /**
8804  * i40e_reenable_fdir_sb - Restore FDir SB capability
8805  * @pf: board private structure
8806  **/
8807 static void i40e_reenable_fdir_sb(struct i40e_pf *pf)
8808 {
8809         if (test_and_clear_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
8810                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
8811                     (I40E_DEBUG_FD & pf->hw.debug_mask))
8812                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
8813 }
8814
8815 /**
8816  * i40e_reenable_fdir_atr - Restore FDir ATR capability
8817  * @pf: board private structure
8818  **/
8819 static void i40e_reenable_fdir_atr(struct i40e_pf *pf)
8820 {
8821         if (test_and_clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state)) {
8822                 /* ATR uses the same filtering logic as SB rules. It only
8823                  * functions properly if the input set mask is at the default
8824                  * settings. It is safe to restore the default input set
8825                  * because there are no active TCPv4 filter rules.
8826                  */
8827                 i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
8828                                         I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
8829                                         I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8830
8831                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8832                     (I40E_DEBUG_FD & pf->hw.debug_mask))
8833                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
8834         }
8835 }
8836
8837 /**
8838  * i40e_delete_invalid_filter - Delete an invalid FDIR filter
8839  * @pf: board private structure
8840  * @filter: FDir filter to remove
8841  */
8842 static void i40e_delete_invalid_filter(struct i40e_pf *pf,
8843                                        struct i40e_fdir_filter *filter)
8844 {
8845         /* Update counters */
8846         pf->fdir_pf_active_filters--;
8847         pf->fd_inv = 0;
8848
8849         switch (filter->flow_type) {
8850         case TCP_V4_FLOW:
8851                 pf->fd_tcp4_filter_cnt--;
8852                 break;
8853         case UDP_V4_FLOW:
8854                 pf->fd_udp4_filter_cnt--;
8855                 break;
8856         case SCTP_V4_FLOW:
8857                 pf->fd_sctp4_filter_cnt--;
8858                 break;
8859         case IP_USER_FLOW:
8860                 switch (filter->ip4_proto) {
8861                 case IPPROTO_TCP:
8862                         pf->fd_tcp4_filter_cnt--;
8863                         break;
8864                 case IPPROTO_UDP:
8865                         pf->fd_udp4_filter_cnt--;
8866                         break;
8867                 case IPPROTO_SCTP:
8868                         pf->fd_sctp4_filter_cnt--;
8869                         break;
8870                 case IPPROTO_IP:
8871                         pf->fd_ip4_filter_cnt--;
8872                         break;
8873                 }
8874                 break;
8875         }
8876
8877         /* Remove the filter from the list and free memory */
8878         hlist_del(&filter->fdir_node);
8879         kfree(filter);
8880 }
8881
8882 /**
8883  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
8884  * @pf: board private structure
8885  **/
8886 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
8887 {
8888         struct i40e_fdir_filter *filter;
8889         u32 fcnt_prog, fcnt_avail;
8890         struct hlist_node *node;
8891
8892         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
8893                 return;
8894
8895         /* Check if we have enough room to re-enable FDir SB capability. */
8896         fcnt_prog = i40e_get_global_fd_count(pf);
8897         fcnt_avail = pf->fdir_pf_filter_count;
8898         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
8899             (pf->fd_add_err == 0) ||
8900             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt))
8901                 i40e_reenable_fdir_sb(pf);
8902
8903         /* We should wait for even more space before re-enabling ATR.
8904          * Additionally, we cannot enable ATR as long as we still have TCP SB
8905          * rules active.
8906          */
8907         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) &&
8908             (pf->fd_tcp4_filter_cnt == 0))
8909                 i40e_reenable_fdir_atr(pf);
8910
8911         /* if hw had a problem adding a filter, delete it */
8912         if (pf->fd_inv > 0) {
8913                 hlist_for_each_entry_safe(filter, node,
8914                                           &pf->fdir_filter_list, fdir_node)
8915                         if (filter->fd_id == pf->fd_inv)
8916                                 i40e_delete_invalid_filter(pf, filter);
8917         }
8918 }
8919
8920 #define I40E_MIN_FD_FLUSH_INTERVAL 10
8921 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
8922 /**
8923  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
8924  * @pf: board private structure
8925  **/
8926 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
8927 {
8928         unsigned long min_flush_time;
8929         int flush_wait_retry = 50;
8930         bool disable_atr = false;
8931         int fd_room;
8932         int reg;
8933
8934         if (!time_after(jiffies, pf->fd_flush_timestamp +
8935                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
8936                 return;
8937
8938         /* If the flush is happening too quick and we have mostly SB rules we
8939          * should not re-enable ATR for some time.
8940          */
8941         min_flush_time = pf->fd_flush_timestamp +
8942                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
8943         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
8944
8945         if (!(time_after(jiffies, min_flush_time)) &&
8946             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
8947                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8948                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
8949                 disable_atr = true;
8950         }
8951
8952         pf->fd_flush_timestamp = jiffies;
8953         set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
8954         /* flush all filters */
8955         wr32(&pf->hw, I40E_PFQF_CTL_1,
8956              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
8957         i40e_flush(&pf->hw);
8958         pf->fd_flush_cnt++;
8959         pf->fd_add_err = 0;
8960         do {
8961                 /* Check FD flush status every 5-6msec */
8962                 usleep_range(5000, 6000);
8963                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
8964                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
8965                         break;
8966         } while (flush_wait_retry--);
8967         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
8968                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
8969         } else {
8970                 /* replay sideband filters */
8971                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
8972                 if (!disable_atr && !pf->fd_tcp4_filter_cnt)
8973                         clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
8974                 clear_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
8975                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8976                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
8977         }
8978 }
8979
8980 /**
8981  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
8982  * @pf: board private structure
8983  **/
8984 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
8985 {
8986         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
8987 }
8988
8989 /**
8990  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
8991  * @pf: board private structure
8992  **/
8993 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
8994 {
8995
8996         /* if interface is down do nothing */
8997         if (test_bit(__I40E_DOWN, pf->state))
8998                 return;
8999
9000         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
9001                 i40e_fdir_flush_and_replay(pf);
9002
9003         i40e_fdir_check_and_reenable(pf);
9004
9005 }
9006
9007 /**
9008  * i40e_vsi_link_event - notify VSI of a link event
9009  * @vsi: vsi to be notified
9010  * @link_up: link up or down
9011  **/
9012 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
9013 {
9014         if (!vsi || test_bit(__I40E_VSI_DOWN, vsi->state))
9015                 return;
9016
9017         switch (vsi->type) {
9018         case I40E_VSI_MAIN:
9019                 if (!vsi->netdev || !vsi->netdev_registered)
9020                         break;
9021
9022                 if (link_up) {
9023                         netif_carrier_on(vsi->netdev);
9024                         netif_tx_wake_all_queues(vsi->netdev);
9025                 } else {
9026                         netif_carrier_off(vsi->netdev);
9027                         netif_tx_stop_all_queues(vsi->netdev);
9028                 }
9029                 break;
9030
9031         case I40E_VSI_SRIOV:
9032         case I40E_VSI_VMDQ2:
9033         case I40E_VSI_CTRL:
9034         case I40E_VSI_IWARP:
9035         case I40E_VSI_MIRROR:
9036         default:
9037                 /* there is no notification for other VSIs */
9038                 break;
9039         }
9040 }
9041
9042 /**
9043  * i40e_veb_link_event - notify elements on the veb of a link event
9044  * @veb: veb to be notified
9045  * @link_up: link up or down
9046  **/
9047 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
9048 {
9049         struct i40e_pf *pf;
9050         int i;
9051
9052         if (!veb || !veb->pf)
9053                 return;
9054         pf = veb->pf;
9055
9056         /* depth first... */
9057         for (i = 0; i < I40E_MAX_VEB; i++)
9058                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
9059                         i40e_veb_link_event(pf->veb[i], link_up);
9060
9061         /* ... now the local VSIs */
9062         for (i = 0; i < pf->num_alloc_vsi; i++)
9063                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
9064                         i40e_vsi_link_event(pf->vsi[i], link_up);
9065 }
9066
9067 /**
9068  * i40e_link_event - Update netif_carrier status
9069  * @pf: board private structure
9070  **/
9071 static void i40e_link_event(struct i40e_pf *pf)
9072 {
9073         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9074         u8 new_link_speed, old_link_speed;
9075         i40e_status status;
9076         bool new_link, old_link;
9077
9078         /* set this to force the get_link_status call to refresh state */
9079         pf->hw.phy.get_link_info = true;
9080         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
9081         status = i40e_get_link_status(&pf->hw, &new_link);
9082
9083         /* On success, disable temp link polling */
9084         if (status == I40E_SUCCESS) {
9085                 clear_bit(__I40E_TEMP_LINK_POLLING, pf->state);
9086         } else {
9087                 /* Enable link polling temporarily until i40e_get_link_status
9088                  * returns I40E_SUCCESS
9089                  */
9090                 set_bit(__I40E_TEMP_LINK_POLLING, pf->state);
9091                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
9092                         status);
9093                 return;
9094         }
9095
9096         old_link_speed = pf->hw.phy.link_info_old.link_speed;
9097         new_link_speed = pf->hw.phy.link_info.link_speed;
9098
9099         if (new_link == old_link &&
9100             new_link_speed == old_link_speed &&
9101             (test_bit(__I40E_VSI_DOWN, vsi->state) ||
9102              new_link == netif_carrier_ok(vsi->netdev)))
9103                 return;
9104
9105         i40e_print_link_message(vsi, new_link);
9106
9107         /* Notify the base of the switch tree connected to
9108          * the link.  Floating VEBs are not notified.
9109          */
9110         if (pf->lan_veb < I40E_MAX_VEB && pf->veb[pf->lan_veb])
9111                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
9112         else
9113                 i40e_vsi_link_event(vsi, new_link);
9114
9115         if (pf->vf)
9116                 i40e_vc_notify_link_state(pf);
9117
9118         if (pf->flags & I40E_FLAG_PTP)
9119                 i40e_ptp_set_increment(pf);
9120 }
9121
9122 /**
9123  * i40e_watchdog_subtask - periodic checks not using event driven response
9124  * @pf: board private structure
9125  **/
9126 static void i40e_watchdog_subtask(struct i40e_pf *pf)
9127 {
9128         int i;
9129
9130         /* if interface is down do nothing */
9131         if (test_bit(__I40E_DOWN, pf->state) ||
9132             test_bit(__I40E_CONFIG_BUSY, pf->state))
9133                 return;
9134
9135         /* make sure we don't do these things too often */
9136         if (time_before(jiffies, (pf->service_timer_previous +
9137                                   pf->service_timer_period)))
9138                 return;
9139         pf->service_timer_previous = jiffies;
9140
9141         if ((pf->flags & I40E_FLAG_LINK_POLLING_ENABLED) ||
9142             test_bit(__I40E_TEMP_LINK_POLLING, pf->state))
9143                 i40e_link_event(pf);
9144
9145         /* Update the stats for active netdevs so the network stack
9146          * can look at updated numbers whenever it cares to
9147          */
9148         for (i = 0; i < pf->num_alloc_vsi; i++)
9149                 if (pf->vsi[i] && pf->vsi[i]->netdev)
9150                         i40e_update_stats(pf->vsi[i]);
9151
9152         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
9153                 /* Update the stats for the active switching components */
9154                 for (i = 0; i < I40E_MAX_VEB; i++)
9155                         if (pf->veb[i])
9156                                 i40e_update_veb_stats(pf->veb[i]);
9157         }
9158
9159         i40e_ptp_rx_hang(pf);
9160         i40e_ptp_tx_hang(pf);
9161 }
9162
9163 /**
9164  * i40e_reset_subtask - Set up for resetting the device and driver
9165  * @pf: board private structure
9166  **/
9167 static void i40e_reset_subtask(struct i40e_pf *pf)
9168 {
9169         u32 reset_flags = 0;
9170
9171         if (test_bit(__I40E_REINIT_REQUESTED, pf->state)) {
9172                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
9173                 clear_bit(__I40E_REINIT_REQUESTED, pf->state);
9174         }
9175         if (test_bit(__I40E_PF_RESET_REQUESTED, pf->state)) {
9176                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
9177                 clear_bit(__I40E_PF_RESET_REQUESTED, pf->state);
9178         }
9179         if (test_bit(__I40E_CORE_RESET_REQUESTED, pf->state)) {
9180                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
9181                 clear_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
9182         }
9183         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state)) {
9184                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
9185                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
9186         }
9187         if (test_bit(__I40E_DOWN_REQUESTED, pf->state)) {
9188                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
9189                 clear_bit(__I40E_DOWN_REQUESTED, pf->state);
9190         }
9191
9192         /* If there's a recovery already waiting, it takes
9193          * precedence before starting a new reset sequence.
9194          */
9195         if (test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) {
9196                 i40e_prep_for_reset(pf, false);
9197                 i40e_reset(pf);
9198                 i40e_rebuild(pf, false, false);
9199         }
9200
9201         /* If we're already down or resetting, just bail */
9202         if (reset_flags &&
9203             !test_bit(__I40E_DOWN, pf->state) &&
9204             !test_bit(__I40E_CONFIG_BUSY, pf->state)) {
9205                 i40e_do_reset(pf, reset_flags, false);
9206         }
9207 }
9208
9209 /**
9210  * i40e_handle_link_event - Handle link event
9211  * @pf: board private structure
9212  * @e: event info posted on ARQ
9213  **/
9214 static void i40e_handle_link_event(struct i40e_pf *pf,
9215                                    struct i40e_arq_event_info *e)
9216 {
9217         struct i40e_aqc_get_link_status *status =
9218                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
9219
9220         /* Do a new status request to re-enable LSE reporting
9221          * and load new status information into the hw struct
9222          * This completely ignores any state information
9223          * in the ARQ event info, instead choosing to always
9224          * issue the AQ update link status command.
9225          */
9226         i40e_link_event(pf);
9227
9228         /* Check if module meets thermal requirements */
9229         if (status->phy_type == I40E_PHY_TYPE_NOT_SUPPORTED_HIGH_TEMP) {
9230                 dev_err(&pf->pdev->dev,
9231                         "Rx/Tx is disabled on this device because the module does not meet thermal requirements.\n");
9232                 dev_err(&pf->pdev->dev,
9233                         "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
9234         } else {
9235                 /* check for unqualified module, if link is down, suppress
9236                  * the message if link was forced to be down.
9237                  */
9238                 if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
9239                     (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
9240                     (!(status->link_info & I40E_AQ_LINK_UP)) &&
9241                     (!(pf->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED))) {
9242                         dev_err(&pf->pdev->dev,
9243                                 "Rx/Tx is disabled on this device because an unsupported SFP module type was detected.\n");
9244                         dev_err(&pf->pdev->dev,
9245                                 "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
9246                 }
9247         }
9248 }
9249
9250 /**
9251  * i40e_clean_adminq_subtask - Clean the AdminQ rings
9252  * @pf: board private structure
9253  **/
9254 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
9255 {
9256         struct i40e_arq_event_info event;
9257         struct i40e_hw *hw = &pf->hw;
9258         u16 pending, i = 0;
9259         i40e_status ret;
9260         u16 opcode;
9261         u32 oldval;
9262         u32 val;
9263
9264         /* Do not run clean AQ when PF reset fails */
9265         if (test_bit(__I40E_RESET_FAILED, pf->state))
9266                 return;
9267
9268         /* check for error indications */
9269         val = rd32(&pf->hw, pf->hw.aq.arq.len);
9270         oldval = val;
9271         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
9272                 if (hw->debug_mask & I40E_DEBUG_AQ)
9273                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
9274                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
9275         }
9276         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
9277                 if (hw->debug_mask & I40E_DEBUG_AQ)
9278                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
9279                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
9280                 pf->arq_overflows++;
9281         }
9282         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
9283                 if (hw->debug_mask & I40E_DEBUG_AQ)
9284                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
9285                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
9286         }
9287         if (oldval != val)
9288                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
9289
9290         val = rd32(&pf->hw, pf->hw.aq.asq.len);
9291         oldval = val;
9292         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
9293                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
9294                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
9295                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
9296         }
9297         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
9298                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
9299                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
9300                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
9301         }
9302         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
9303                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
9304                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
9305                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
9306         }
9307         if (oldval != val)
9308                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
9309
9310         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
9311         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
9312         if (!event.msg_buf)
9313                 return;
9314
9315         do {
9316                 ret = i40e_clean_arq_element(hw, &event, &pending);
9317                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
9318                         break;
9319                 else if (ret) {
9320                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
9321                         break;
9322                 }
9323
9324                 opcode = le16_to_cpu(event.desc.opcode);
9325                 switch (opcode) {
9326
9327                 case i40e_aqc_opc_get_link_status:
9328                         i40e_handle_link_event(pf, &event);
9329                         break;
9330                 case i40e_aqc_opc_send_msg_to_pf:
9331                         ret = i40e_vc_process_vf_msg(pf,
9332                                         le16_to_cpu(event.desc.retval),
9333                                         le32_to_cpu(event.desc.cookie_high),
9334                                         le32_to_cpu(event.desc.cookie_low),
9335                                         event.msg_buf,
9336                                         event.msg_len);
9337                         break;
9338                 case i40e_aqc_opc_lldp_update_mib:
9339                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
9340 #ifdef CONFIG_I40E_DCB
9341                         rtnl_lock();
9342                         ret = i40e_handle_lldp_event(pf, &event);
9343                         rtnl_unlock();
9344 #endif /* CONFIG_I40E_DCB */
9345                         break;
9346                 case i40e_aqc_opc_event_lan_overflow:
9347                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
9348                         i40e_handle_lan_overflow_event(pf, &event);
9349                         break;
9350                 case i40e_aqc_opc_send_msg_to_peer:
9351                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
9352                         break;
9353                 case i40e_aqc_opc_nvm_erase:
9354                 case i40e_aqc_opc_nvm_update:
9355                 case i40e_aqc_opc_oem_post_update:
9356                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
9357                                    "ARQ NVM operation 0x%04x completed\n",
9358                                    opcode);
9359                         break;
9360                 default:
9361                         dev_info(&pf->pdev->dev,
9362                                  "ARQ: Unknown event 0x%04x ignored\n",
9363                                  opcode);
9364                         break;
9365                 }
9366         } while (i++ < pf->adminq_work_limit);
9367
9368         if (i < pf->adminq_work_limit)
9369                 clear_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state);
9370
9371         /* re-enable Admin queue interrupt cause */
9372         val = rd32(hw, I40E_PFINT_ICR0_ENA);
9373         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
9374         wr32(hw, I40E_PFINT_ICR0_ENA, val);
9375         i40e_flush(hw);
9376
9377         kfree(event.msg_buf);
9378 }
9379
9380 /**
9381  * i40e_verify_eeprom - make sure eeprom is good to use
9382  * @pf: board private structure
9383  **/
9384 static void i40e_verify_eeprom(struct i40e_pf *pf)
9385 {
9386         int err;
9387
9388         err = i40e_diag_eeprom_test(&pf->hw);
9389         if (err) {
9390                 /* retry in case of garbage read */
9391                 err = i40e_diag_eeprom_test(&pf->hw);
9392                 if (err) {
9393                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
9394                                  err);
9395                         set_bit(__I40E_BAD_EEPROM, pf->state);
9396                 }
9397         }
9398
9399         if (!err && test_bit(__I40E_BAD_EEPROM, pf->state)) {
9400                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
9401                 clear_bit(__I40E_BAD_EEPROM, pf->state);
9402         }
9403 }
9404
9405 /**
9406  * i40e_enable_pf_switch_lb
9407  * @pf: pointer to the PF structure
9408  *
9409  * enable switch loop back or die - no point in a return value
9410  **/
9411 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
9412 {
9413         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9414         struct i40e_vsi_context ctxt;
9415         int ret;
9416
9417         ctxt.seid = pf->main_vsi_seid;
9418         ctxt.pf_num = pf->hw.pf_id;
9419         ctxt.vf_num = 0;
9420         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9421         if (ret) {
9422                 dev_info(&pf->pdev->dev,
9423                          "couldn't get PF vsi config, err %s aq_err %s\n",
9424                          i40e_stat_str(&pf->hw, ret),
9425                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9426                 return;
9427         }
9428         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9429         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9430         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9431
9432         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
9433         if (ret) {
9434                 dev_info(&pf->pdev->dev,
9435                          "update vsi switch failed, err %s aq_err %s\n",
9436                          i40e_stat_str(&pf->hw, ret),
9437                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9438         }
9439 }
9440
9441 /**
9442  * i40e_disable_pf_switch_lb
9443  * @pf: pointer to the PF structure
9444  *
9445  * disable switch loop back or die - no point in a return value
9446  **/
9447 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
9448 {
9449         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9450         struct i40e_vsi_context ctxt;
9451         int ret;
9452
9453         ctxt.seid = pf->main_vsi_seid;
9454         ctxt.pf_num = pf->hw.pf_id;
9455         ctxt.vf_num = 0;
9456         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9457         if (ret) {
9458                 dev_info(&pf->pdev->dev,
9459                          "couldn't get PF vsi config, err %s aq_err %s\n",
9460                          i40e_stat_str(&pf->hw, ret),
9461                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9462                 return;
9463         }
9464         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9465         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9466         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9467
9468         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
9469         if (ret) {
9470                 dev_info(&pf->pdev->dev,
9471                          "update vsi switch failed, err %s aq_err %s\n",
9472                          i40e_stat_str(&pf->hw, ret),
9473                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9474         }
9475 }
9476
9477 /**
9478  * i40e_config_bridge_mode - Configure the HW bridge mode
9479  * @veb: pointer to the bridge instance
9480  *
9481  * Configure the loop back mode for the LAN VSI that is downlink to the
9482  * specified HW bridge instance. It is expected this function is called
9483  * when a new HW bridge is instantiated.
9484  **/
9485 static void i40e_config_bridge_mode(struct i40e_veb *veb)
9486 {
9487         struct i40e_pf *pf = veb->pf;
9488
9489         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
9490                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
9491                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
9492         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
9493                 i40e_disable_pf_switch_lb(pf);
9494         else
9495                 i40e_enable_pf_switch_lb(pf);
9496 }
9497
9498 /**
9499  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
9500  * @veb: pointer to the VEB instance
9501  *
9502  * This is a recursive function that first builds the attached VSIs then
9503  * recurses in to build the next layer of VEB.  We track the connections
9504  * through our own index numbers because the seid's from the HW could
9505  * change across the reset.
9506  **/
9507 static int i40e_reconstitute_veb(struct i40e_veb *veb)
9508 {
9509         struct i40e_vsi *ctl_vsi = NULL;
9510         struct i40e_pf *pf = veb->pf;
9511         int v, veb_idx;
9512         int ret;
9513
9514         /* build VSI that owns this VEB, temporarily attached to base VEB */
9515         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
9516                 if (pf->vsi[v] &&
9517                     pf->vsi[v]->veb_idx == veb->idx &&
9518                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
9519                         ctl_vsi = pf->vsi[v];
9520                         break;
9521                 }
9522         }
9523         if (!ctl_vsi) {
9524                 dev_info(&pf->pdev->dev,
9525                          "missing owner VSI for veb_idx %d\n", veb->idx);
9526                 ret = -ENOENT;
9527                 goto end_reconstitute;
9528         }
9529         if (ctl_vsi != pf->vsi[pf->lan_vsi])
9530                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9531         ret = i40e_add_vsi(ctl_vsi);
9532         if (ret) {
9533                 dev_info(&pf->pdev->dev,
9534                          "rebuild of veb_idx %d owner VSI failed: %d\n",
9535                          veb->idx, ret);
9536                 goto end_reconstitute;
9537         }
9538         i40e_vsi_reset_stats(ctl_vsi);
9539
9540         /* create the VEB in the switch and move the VSI onto the VEB */
9541         ret = i40e_add_veb(veb, ctl_vsi);
9542         if (ret)
9543                 goto end_reconstitute;
9544
9545         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
9546                 veb->bridge_mode = BRIDGE_MODE_VEB;
9547         else
9548                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9549         i40e_config_bridge_mode(veb);
9550
9551         /* create the remaining VSIs attached to this VEB */
9552         for (v = 0; v < pf->num_alloc_vsi; v++) {
9553                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
9554                         continue;
9555
9556                 if (pf->vsi[v]->veb_idx == veb->idx) {
9557                         struct i40e_vsi *vsi = pf->vsi[v];
9558
9559                         vsi->uplink_seid = veb->seid;
9560                         ret = i40e_add_vsi(vsi);
9561                         if (ret) {
9562                                 dev_info(&pf->pdev->dev,
9563                                          "rebuild of vsi_idx %d failed: %d\n",
9564                                          v, ret);
9565                                 goto end_reconstitute;
9566                         }
9567                         i40e_vsi_reset_stats(vsi);
9568                 }
9569         }
9570
9571         /* create any VEBs attached to this VEB - RECURSION */
9572         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9573                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
9574                         pf->veb[veb_idx]->uplink_seid = veb->seid;
9575                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
9576                         if (ret)
9577                                 break;
9578                 }
9579         }
9580
9581 end_reconstitute:
9582         return ret;
9583 }
9584
9585 /**
9586  * i40e_get_capabilities - get info about the HW
9587  * @pf: the PF struct
9588  **/
9589 static int i40e_get_capabilities(struct i40e_pf *pf,
9590                                  enum i40e_admin_queue_opc list_type)
9591 {
9592         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
9593         u16 data_size;
9594         int buf_len;
9595         int err;
9596
9597         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
9598         do {
9599                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
9600                 if (!cap_buf)
9601                         return -ENOMEM;
9602
9603                 /* this loads the data into the hw struct for us */
9604                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
9605                                                     &data_size, list_type,
9606                                                     NULL);
9607                 /* data loaded, buffer no longer needed */
9608                 kfree(cap_buf);
9609
9610                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
9611                         /* retry with a larger buffer */
9612                         buf_len = data_size;
9613                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
9614                         dev_info(&pf->pdev->dev,
9615                                  "capability discovery failed, err %s aq_err %s\n",
9616                                  i40e_stat_str(&pf->hw, err),
9617                                  i40e_aq_str(&pf->hw,
9618                                              pf->hw.aq.asq_last_status));
9619                         return -ENODEV;
9620                 }
9621         } while (err);
9622
9623         if (pf->hw.debug_mask & I40E_DEBUG_USER) {
9624                 if (list_type == i40e_aqc_opc_list_func_capabilities) {
9625                         dev_info(&pf->pdev->dev,
9626                                  "pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
9627                                  pf->hw.pf_id, pf->hw.func_caps.num_vfs,
9628                                  pf->hw.func_caps.num_msix_vectors,
9629                                  pf->hw.func_caps.num_msix_vectors_vf,
9630                                  pf->hw.func_caps.fd_filters_guaranteed,
9631                                  pf->hw.func_caps.fd_filters_best_effort,
9632                                  pf->hw.func_caps.num_tx_qp,
9633                                  pf->hw.func_caps.num_vsis);
9634                 } else if (list_type == i40e_aqc_opc_list_dev_capabilities) {
9635                         dev_info(&pf->pdev->dev,
9636                                  "switch_mode=0x%04x, function_valid=0x%08x\n",
9637                                  pf->hw.dev_caps.switch_mode,
9638                                  pf->hw.dev_caps.valid_functions);
9639                         dev_info(&pf->pdev->dev,
9640                                  "SR-IOV=%d, num_vfs for all function=%u\n",
9641                                  pf->hw.dev_caps.sr_iov_1_1,
9642                                  pf->hw.dev_caps.num_vfs);
9643                         dev_info(&pf->pdev->dev,
9644                                  "num_vsis=%u, num_rx:%u, num_tx=%u\n",
9645                                  pf->hw.dev_caps.num_vsis,
9646                                  pf->hw.dev_caps.num_rx_qp,
9647                                  pf->hw.dev_caps.num_tx_qp);
9648                 }
9649         }
9650         if (list_type == i40e_aqc_opc_list_func_capabilities) {
9651 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
9652                        + pf->hw.func_caps.num_vfs)
9653                 if (pf->hw.revision_id == 0 &&
9654                     pf->hw.func_caps.num_vsis < DEF_NUM_VSI) {
9655                         dev_info(&pf->pdev->dev,
9656                                  "got num_vsis %d, setting num_vsis to %d\n",
9657                                  pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
9658                         pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
9659                 }
9660         }
9661         return 0;
9662 }
9663
9664 static int i40e_vsi_clear(struct i40e_vsi *vsi);
9665
9666 /**
9667  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
9668  * @pf: board private structure
9669  **/
9670 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
9671 {
9672         struct i40e_vsi *vsi;
9673
9674         /* quick workaround for an NVM issue that leaves a critical register
9675          * uninitialized
9676          */
9677         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
9678                 static const u32 hkey[] = {
9679                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
9680                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
9681                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
9682                         0x95b3a76d};
9683                 int i;
9684
9685                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
9686                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
9687         }
9688
9689         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
9690                 return;
9691
9692         /* find existing VSI and see if it needs configuring */
9693         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
9694
9695         /* create a new VSI if none exists */
9696         if (!vsi) {
9697                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
9698                                      pf->vsi[pf->lan_vsi]->seid, 0);
9699                 if (!vsi) {
9700                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
9701                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9702                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
9703                         return;
9704                 }
9705         }
9706
9707         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
9708 }
9709
9710 /**
9711  * i40e_fdir_teardown - release the Flow Director resources
9712  * @pf: board private structure
9713  **/
9714 static void i40e_fdir_teardown(struct i40e_pf *pf)
9715 {
9716         struct i40e_vsi *vsi;
9717
9718         i40e_fdir_filter_exit(pf);
9719         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
9720         if (vsi)
9721                 i40e_vsi_release(vsi);
9722 }
9723
9724 /**
9725  * i40e_rebuild_cloud_filters - Rebuilds cloud filters for VSIs
9726  * @vsi: PF main vsi
9727  * @seid: seid of main or channel VSIs
9728  *
9729  * Rebuilds cloud filters associated with main VSI and channel VSIs if they
9730  * existed before reset
9731  **/
9732 static int i40e_rebuild_cloud_filters(struct i40e_vsi *vsi, u16 seid)
9733 {
9734         struct i40e_cloud_filter *cfilter;
9735         struct i40e_pf *pf = vsi->back;
9736         struct hlist_node *node;
9737         i40e_status ret;
9738
9739         /* Add cloud filters back if they exist */
9740         hlist_for_each_entry_safe(cfilter, node, &pf->cloud_filter_list,
9741                                   cloud_node) {
9742                 if (cfilter->seid != seid)
9743                         continue;
9744
9745                 if (cfilter->dst_port)
9746                         ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
9747                                                                 true);
9748                 else
9749                         ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
9750
9751                 if (ret) {
9752                         dev_dbg(&pf->pdev->dev,
9753                                 "Failed to rebuild cloud filter, err %s aq_err %s\n",
9754                                 i40e_stat_str(&pf->hw, ret),
9755                                 i40e_aq_str(&pf->hw,
9756                                             pf->hw.aq.asq_last_status));
9757                         return ret;
9758                 }
9759         }
9760         return 0;
9761 }
9762
9763 /**
9764  * i40e_rebuild_channels - Rebuilds channel VSIs if they existed before reset
9765  * @vsi: PF main vsi
9766  *
9767  * Rebuilds channel VSIs if they existed before reset
9768  **/
9769 static int i40e_rebuild_channels(struct i40e_vsi *vsi)
9770 {
9771         struct i40e_channel *ch, *ch_tmp;
9772         i40e_status ret;
9773
9774         if (list_empty(&vsi->ch_list))
9775                 return 0;
9776
9777         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
9778                 if (!ch->initialized)
9779                         break;
9780                 /* Proceed with creation of channel (VMDq2) VSI */
9781                 ret = i40e_add_channel(vsi->back, vsi->uplink_seid, ch);
9782                 if (ret) {
9783                         dev_info(&vsi->back->pdev->dev,
9784                                  "failed to rebuild channels using uplink_seid %u\n",
9785                                  vsi->uplink_seid);
9786                         return ret;
9787                 }
9788                 /* Reconfigure TX queues using QTX_CTL register */
9789                 ret = i40e_channel_config_tx_ring(vsi->back, vsi, ch);
9790                 if (ret) {
9791                         dev_info(&vsi->back->pdev->dev,
9792                                  "failed to configure TX rings for channel %u\n",
9793                                  ch->seid);
9794                         return ret;
9795                 }
9796                 /* update 'next_base_queue' */
9797                 vsi->next_base_queue = vsi->next_base_queue +
9798                                                         ch->num_queue_pairs;
9799                 if (ch->max_tx_rate) {
9800                         u64 credits = ch->max_tx_rate;
9801
9802                         if (i40e_set_bw_limit(vsi, ch->seid,
9803                                               ch->max_tx_rate))
9804                                 return -EINVAL;
9805
9806                         do_div(credits, I40E_BW_CREDIT_DIVISOR);
9807                         dev_dbg(&vsi->back->pdev->dev,
9808                                 "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
9809                                 ch->max_tx_rate,
9810                                 credits,
9811                                 ch->seid);
9812                 }
9813                 ret = i40e_rebuild_cloud_filters(vsi, ch->seid);
9814                 if (ret) {
9815                         dev_dbg(&vsi->back->pdev->dev,
9816                                 "Failed to rebuild cloud filters for channel VSI %u\n",
9817                                 ch->seid);
9818                         return ret;
9819                 }
9820         }
9821         return 0;
9822 }
9823
9824 /**
9825  * i40e_prep_for_reset - prep for the core to reset
9826  * @pf: board private structure
9827  * @lock_acquired: indicates whether or not the lock has been acquired
9828  * before this function was called.
9829  *
9830  * Close up the VFs and other things in prep for PF Reset.
9831   **/
9832 static void i40e_prep_for_reset(struct i40e_pf *pf, bool lock_acquired)
9833 {
9834         struct i40e_hw *hw = &pf->hw;
9835         i40e_status ret = 0;
9836         u32 v;
9837
9838         clear_bit(__I40E_RESET_INTR_RECEIVED, pf->state);
9839         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
9840                 return;
9841         if (i40e_check_asq_alive(&pf->hw))
9842                 i40e_vc_notify_reset(pf);
9843
9844         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
9845
9846         /* quiesce the VSIs and their queues that are not already DOWN */
9847         /* pf_quiesce_all_vsi modifies netdev structures -rtnl_lock needed */
9848         if (!lock_acquired)
9849                 rtnl_lock();
9850         i40e_pf_quiesce_all_vsi(pf);
9851         if (!lock_acquired)
9852                 rtnl_unlock();
9853
9854         for (v = 0; v < pf->num_alloc_vsi; v++) {
9855                 if (pf->vsi[v])
9856                         pf->vsi[v]->seid = 0;
9857         }
9858
9859         i40e_shutdown_adminq(&pf->hw);
9860
9861         /* call shutdown HMC */
9862         if (hw->hmc.hmc_obj) {
9863                 ret = i40e_shutdown_lan_hmc(hw);
9864                 if (ret)
9865                         dev_warn(&pf->pdev->dev,
9866                                  "shutdown_lan_hmc failed: %d\n", ret);
9867         }
9868
9869         /* Save the current PTP time so that we can restore the time after the
9870          * reset completes.
9871          */
9872         i40e_ptp_save_hw_time(pf);
9873 }
9874
9875 /**
9876  * i40e_send_version - update firmware with driver version
9877  * @pf: PF struct
9878  */
9879 static void i40e_send_version(struct i40e_pf *pf)
9880 {
9881         struct i40e_driver_version dv;
9882
9883         dv.major_version = 0xff;
9884         dv.minor_version = 0xff;
9885         dv.build_version = 0xff;
9886         dv.subbuild_version = 0;
9887         strlcpy(dv.driver_string, UTS_RELEASE, sizeof(dv.driver_string));
9888         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
9889 }
9890
9891 /**
9892  * i40e_get_oem_version - get OEM specific version information
9893  * @hw: pointer to the hardware structure
9894  **/
9895 static void i40e_get_oem_version(struct i40e_hw *hw)
9896 {
9897         u16 block_offset = 0xffff;
9898         u16 block_length = 0;
9899         u16 capabilities = 0;
9900         u16 gen_snap = 0;
9901         u16 release = 0;
9902
9903 #define I40E_SR_NVM_OEM_VERSION_PTR             0x1B
9904 #define I40E_NVM_OEM_LENGTH_OFFSET              0x00
9905 #define I40E_NVM_OEM_CAPABILITIES_OFFSET        0x01
9906 #define I40E_NVM_OEM_GEN_OFFSET                 0x02
9907 #define I40E_NVM_OEM_RELEASE_OFFSET             0x03
9908 #define I40E_NVM_OEM_CAPABILITIES_MASK          0x000F
9909 #define I40E_NVM_OEM_LENGTH                     3
9910
9911         /* Check if pointer to OEM version block is valid. */
9912         i40e_read_nvm_word(hw, I40E_SR_NVM_OEM_VERSION_PTR, &block_offset);
9913         if (block_offset == 0xffff)
9914                 return;
9915
9916         /* Check if OEM version block has correct length. */
9917         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_LENGTH_OFFSET,
9918                            &block_length);
9919         if (block_length < I40E_NVM_OEM_LENGTH)
9920                 return;
9921
9922         /* Check if OEM version format is as expected. */
9923         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_CAPABILITIES_OFFSET,
9924                            &capabilities);
9925         if ((capabilities & I40E_NVM_OEM_CAPABILITIES_MASK) != 0)
9926                 return;
9927
9928         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_GEN_OFFSET,
9929                            &gen_snap);
9930         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_RELEASE_OFFSET,
9931                            &release);
9932         hw->nvm.oem_ver = (gen_snap << I40E_OEM_SNAP_SHIFT) | release;
9933         hw->nvm.eetrack = I40E_OEM_EETRACK_ID;
9934 }
9935
9936 /**
9937  * i40e_reset - wait for core reset to finish reset, reset pf if corer not seen
9938  * @pf: board private structure
9939  **/
9940 static int i40e_reset(struct i40e_pf *pf)
9941 {
9942         struct i40e_hw *hw = &pf->hw;
9943         i40e_status ret;
9944
9945         ret = i40e_pf_reset(hw);
9946         if (ret) {
9947                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
9948                 set_bit(__I40E_RESET_FAILED, pf->state);
9949                 clear_bit(__I40E_RESET_RECOVERY_PENDING, pf->state);
9950         } else {
9951                 pf->pfr_count++;
9952         }
9953         return ret;
9954 }
9955
9956 /**
9957  * i40e_rebuild - rebuild using a saved config
9958  * @pf: board private structure
9959  * @reinit: if the Main VSI needs to re-initialized.
9960  * @lock_acquired: indicates whether or not the lock has been acquired
9961  * before this function was called.
9962  **/
9963 static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired)
9964 {
9965         int old_recovery_mode_bit = test_bit(__I40E_RECOVERY_MODE, pf->state);
9966         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9967         struct i40e_hw *hw = &pf->hw;
9968         u8 set_fc_aq_fail = 0;
9969         i40e_status ret;
9970         u32 val;
9971         int v;
9972
9973         if (test_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state) &&
9974             i40e_check_recovery_mode(pf)) {
9975                 i40e_set_ethtool_ops(pf->vsi[pf->lan_vsi]->netdev);
9976         }
9977
9978         if (test_bit(__I40E_DOWN, pf->state) &&
9979             !test_bit(__I40E_RECOVERY_MODE, pf->state) &&
9980             !old_recovery_mode_bit)
9981                 goto clear_recovery;
9982         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
9983
9984         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
9985         ret = i40e_init_adminq(&pf->hw);
9986         if (ret) {
9987                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
9988                          i40e_stat_str(&pf->hw, ret),
9989                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9990                 goto clear_recovery;
9991         }
9992         i40e_get_oem_version(&pf->hw);
9993
9994         if (test_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state) &&
9995             ((hw->aq.fw_maj_ver == 4 && hw->aq.fw_min_ver <= 33) ||
9996              hw->aq.fw_maj_ver < 4) && hw->mac.type == I40E_MAC_XL710) {
9997                 /* The following delay is necessary for 4.33 firmware and older
9998                  * to recover after EMP reset. 200 ms should suffice but we
9999                  * put here 300 ms to be sure that FW is ready to operate
10000                  * after reset.
10001                  */
10002                 mdelay(300);
10003         }
10004
10005         /* re-verify the eeprom if we just had an EMP reset */
10006         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state))
10007                 i40e_verify_eeprom(pf);
10008
10009         /* if we are going out of or into recovery mode we have to act
10010          * accordingly with regard to resources initialization
10011          * and deinitialization
10012          */
10013         if (test_bit(__I40E_RECOVERY_MODE, pf->state) ||
10014             old_recovery_mode_bit) {
10015                 if (i40e_get_capabilities(pf,
10016                                           i40e_aqc_opc_list_func_capabilities))
10017                         goto end_unlock;
10018
10019                 if (test_bit(__I40E_RECOVERY_MODE, pf->state)) {
10020                         /* we're staying in recovery mode so we'll reinitialize
10021                          * misc vector here
10022                          */
10023                         if (i40e_setup_misc_vector_for_recovery_mode(pf))
10024                                 goto end_unlock;
10025                 } else {
10026                         if (!lock_acquired)
10027                                 rtnl_lock();
10028                         /* we're going out of recovery mode so we'll free
10029                          * the IRQ allocated specifically for recovery mode
10030                          * and restore the interrupt scheme
10031                          */
10032                         free_irq(pf->pdev->irq, pf);
10033                         i40e_clear_interrupt_scheme(pf);
10034                         if (i40e_restore_interrupt_scheme(pf))
10035                                 goto end_unlock;
10036                 }
10037
10038                 /* tell the firmware that we're starting */
10039                 i40e_send_version(pf);
10040
10041                 /* bail out in case recovery mode was detected, as there is
10042                  * no need for further configuration.
10043                  */
10044                 goto end_unlock;
10045         }
10046
10047         i40e_clear_pxe_mode(hw);
10048         ret = i40e_get_capabilities(pf, i40e_aqc_opc_list_func_capabilities);
10049         if (ret)
10050                 goto end_core_reset;
10051
10052         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10053                                 hw->func_caps.num_rx_qp, 0, 0);
10054         if (ret) {
10055                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
10056                 goto end_core_reset;
10057         }
10058         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10059         if (ret) {
10060                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
10061                 goto end_core_reset;
10062         }
10063
10064         /* Enable FW to write a default DCB config on link-up */
10065         i40e_aq_set_dcb_parameters(hw, true, NULL);
10066
10067 #ifdef CONFIG_I40E_DCB
10068         ret = i40e_init_pf_dcb(pf);
10069         if (ret) {
10070                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
10071                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10072                 /* Continue without DCB enabled */
10073         }
10074 #endif /* CONFIG_I40E_DCB */
10075         /* do basic switch setup */
10076         if (!lock_acquired)
10077                 rtnl_lock();
10078         ret = i40e_setup_pf_switch(pf, reinit);
10079         if (ret)
10080                 goto end_unlock;
10081
10082         /* The driver only wants link up/down and module qualification
10083          * reports from firmware.  Note the negative logic.
10084          */
10085         ret = i40e_aq_set_phy_int_mask(&pf->hw,
10086                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
10087                                          I40E_AQ_EVENT_MEDIA_NA |
10088                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
10089         if (ret)
10090                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10091                          i40e_stat_str(&pf->hw, ret),
10092                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10093
10094         /* make sure our flow control settings are restored */
10095         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
10096         if (ret)
10097                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
10098                         i40e_stat_str(&pf->hw, ret),
10099                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10100
10101         /* Rebuild the VSIs and VEBs that existed before reset.
10102          * They are still in our local switch element arrays, so only
10103          * need to rebuild the switch model in the HW.
10104          *
10105          * If there were VEBs but the reconstitution failed, we'll try
10106          * try to recover minimal use by getting the basic PF VSI working.
10107          */
10108         if (vsi->uplink_seid != pf->mac_seid) {
10109                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
10110                 /* find the one VEB connected to the MAC, and find orphans */
10111                 for (v = 0; v < I40E_MAX_VEB; v++) {
10112                         if (!pf->veb[v])
10113                                 continue;
10114
10115                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
10116                             pf->veb[v]->uplink_seid == 0) {
10117                                 ret = i40e_reconstitute_veb(pf->veb[v]);
10118
10119                                 if (!ret)
10120                                         continue;
10121
10122                                 /* If Main VEB failed, we're in deep doodoo,
10123                                  * so give up rebuilding the switch and set up
10124                                  * for minimal rebuild of PF VSI.
10125                                  * If orphan failed, we'll report the error
10126                                  * but try to keep going.
10127                                  */
10128                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
10129                                         dev_info(&pf->pdev->dev,
10130                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
10131                                                  ret);
10132                                         vsi->uplink_seid = pf->mac_seid;
10133                                         break;
10134                                 } else if (pf->veb[v]->uplink_seid == 0) {
10135                                         dev_info(&pf->pdev->dev,
10136                                                  "rebuild of orphan VEB failed: %d\n",
10137                                                  ret);
10138                                 }
10139                         }
10140                 }
10141         }
10142
10143         if (vsi->uplink_seid == pf->mac_seid) {
10144                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
10145                 /* no VEB, so rebuild only the Main VSI */
10146                 ret = i40e_add_vsi(vsi);
10147                 if (ret) {
10148                         dev_info(&pf->pdev->dev,
10149                                  "rebuild of Main VSI failed: %d\n", ret);
10150                         goto end_unlock;
10151                 }
10152         }
10153
10154         if (vsi->mqprio_qopt.max_rate[0]) {
10155                 u64 max_tx_rate = vsi->mqprio_qopt.max_rate[0];
10156                 u64 credits = 0;
10157
10158                 do_div(max_tx_rate, I40E_BW_MBPS_DIVISOR);
10159                 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
10160                 if (ret)
10161                         goto end_unlock;
10162
10163                 credits = max_tx_rate;
10164                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
10165                 dev_dbg(&vsi->back->pdev->dev,
10166                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
10167                         max_tx_rate,
10168                         credits,
10169                         vsi->seid);
10170         }
10171
10172         ret = i40e_rebuild_cloud_filters(vsi, vsi->seid);
10173         if (ret)
10174                 goto end_unlock;
10175
10176         /* PF Main VSI is rebuild by now, go ahead and rebuild channel VSIs
10177          * for this main VSI if they exist
10178          */
10179         ret = i40e_rebuild_channels(vsi);
10180         if (ret)
10181                 goto end_unlock;
10182
10183         /* Reconfigure hardware for allowing smaller MSS in the case
10184          * of TSO, so that we avoid the MDD being fired and causing
10185          * a reset in the case of small MSS+TSO.
10186          */
10187 #define I40E_REG_MSS          0x000E64DC
10188 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
10189 #define I40E_64BYTE_MSS       0x400000
10190         val = rd32(hw, I40E_REG_MSS);
10191         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10192                 val &= ~I40E_REG_MSS_MIN_MASK;
10193                 val |= I40E_64BYTE_MSS;
10194                 wr32(hw, I40E_REG_MSS, val);
10195         }
10196
10197         if (pf->hw_features & I40E_HW_RESTART_AUTONEG) {
10198                 msleep(75);
10199                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10200                 if (ret)
10201                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10202                                  i40e_stat_str(&pf->hw, ret),
10203                                  i40e_aq_str(&pf->hw,
10204                                              pf->hw.aq.asq_last_status));
10205         }
10206         /* reinit the misc interrupt */
10207         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
10208                 ret = i40e_setup_misc_vector(pf);
10209
10210         /* Add a filter to drop all Flow control frames from any VSI from being
10211          * transmitted. By doing so we stop a malicious VF from sending out
10212          * PAUSE or PFC frames and potentially controlling traffic for other
10213          * PF/VF VSIs.
10214          * The FW can still send Flow control frames if enabled.
10215          */
10216         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
10217                                                        pf->main_vsi_seid);
10218
10219         /* restart the VSIs that were rebuilt and running before the reset */
10220         i40e_pf_unquiesce_all_vsi(pf);
10221
10222         /* Release the RTNL lock before we start resetting VFs */
10223         if (!lock_acquired)
10224                 rtnl_unlock();
10225
10226         /* Restore promiscuous settings */
10227         ret = i40e_set_promiscuous(pf, pf->cur_promisc);
10228         if (ret)
10229                 dev_warn(&pf->pdev->dev,
10230                          "Failed to restore promiscuous setting: %s, err %s aq_err %s\n",
10231                          pf->cur_promisc ? "on" : "off",
10232                          i40e_stat_str(&pf->hw, ret),
10233                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10234
10235         i40e_reset_all_vfs(pf, true);
10236
10237         /* tell the firmware that we're starting */
10238         i40e_send_version(pf);
10239
10240         /* We've already released the lock, so don't do it again */
10241         goto end_core_reset;
10242
10243 end_unlock:
10244         if (!lock_acquired)
10245                 rtnl_unlock();
10246 end_core_reset:
10247         clear_bit(__I40E_RESET_FAILED, pf->state);
10248 clear_recovery:
10249         clear_bit(__I40E_RESET_RECOVERY_PENDING, pf->state);
10250         clear_bit(__I40E_TIMEOUT_RECOVERY_PENDING, pf->state);
10251 }
10252
10253 /**
10254  * i40e_reset_and_rebuild - reset and rebuild using a saved config
10255  * @pf: board private structure
10256  * @reinit: if the Main VSI needs to re-initialized.
10257  * @lock_acquired: indicates whether or not the lock has been acquired
10258  * before this function was called.
10259  **/
10260 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit,
10261                                    bool lock_acquired)
10262 {
10263         int ret;
10264         /* Now we wait for GRST to settle out.
10265          * We don't have to delete the VEBs or VSIs from the hw switch
10266          * because the reset will make them disappear.
10267          */
10268         ret = i40e_reset(pf);
10269         if (!ret)
10270                 i40e_rebuild(pf, reinit, lock_acquired);
10271 }
10272
10273 /**
10274  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
10275  * @pf: board private structure
10276  *
10277  * Close up the VFs and other things in prep for a Core Reset,
10278  * then get ready to rebuild the world.
10279  * @lock_acquired: indicates whether or not the lock has been acquired
10280  * before this function was called.
10281  **/
10282 static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired)
10283 {
10284         i40e_prep_for_reset(pf, lock_acquired);
10285         i40e_reset_and_rebuild(pf, false, lock_acquired);
10286 }
10287
10288 /**
10289  * i40e_handle_mdd_event
10290  * @pf: pointer to the PF structure
10291  *
10292  * Called from the MDD irq handler to identify possibly malicious vfs
10293  **/
10294 static void i40e_handle_mdd_event(struct i40e_pf *pf)
10295 {
10296         struct i40e_hw *hw = &pf->hw;
10297         bool mdd_detected = false;
10298         struct i40e_vf *vf;
10299         u32 reg;
10300         int i;
10301
10302         if (!test_bit(__I40E_MDD_EVENT_PENDING, pf->state))
10303                 return;
10304
10305         /* find what triggered the MDD event */
10306         reg = rd32(hw, I40E_GL_MDET_TX);
10307         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
10308                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
10309                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
10310                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
10311                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
10312                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
10313                                 I40E_GL_MDET_TX_EVENT_SHIFT;
10314                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
10315                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
10316                                 pf->hw.func_caps.base_queue;
10317                 if (netif_msg_tx_err(pf))
10318                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
10319                                  event, queue, pf_num, vf_num);
10320                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
10321                 mdd_detected = true;
10322         }
10323         reg = rd32(hw, I40E_GL_MDET_RX);
10324         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
10325                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
10326                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
10327                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
10328                                 I40E_GL_MDET_RX_EVENT_SHIFT;
10329                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
10330                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
10331                                 pf->hw.func_caps.base_queue;
10332                 if (netif_msg_rx_err(pf))
10333                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
10334                                  event, queue, func);
10335                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
10336                 mdd_detected = true;
10337         }
10338
10339         if (mdd_detected) {
10340                 reg = rd32(hw, I40E_PF_MDET_TX);
10341                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
10342                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
10343                         dev_dbg(&pf->pdev->dev, "TX driver issue detected on PF\n");
10344                 }
10345                 reg = rd32(hw, I40E_PF_MDET_RX);
10346                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
10347                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
10348                         dev_dbg(&pf->pdev->dev, "RX driver issue detected on PF\n");
10349                 }
10350         }
10351
10352         /* see if one of the VFs needs its hand slapped */
10353         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
10354                 vf = &(pf->vf[i]);
10355                 reg = rd32(hw, I40E_VP_MDET_TX(i));
10356                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
10357                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
10358                         vf->num_mdd_events++;
10359                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
10360                                  i);
10361                         dev_info(&pf->pdev->dev,
10362                                  "Use PF Control I/F to re-enable the VF\n");
10363                         set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
10364                 }
10365
10366                 reg = rd32(hw, I40E_VP_MDET_RX(i));
10367                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
10368                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
10369                         vf->num_mdd_events++;
10370                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
10371                                  i);
10372                         dev_info(&pf->pdev->dev,
10373                                  "Use PF Control I/F to re-enable the VF\n");
10374                         set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
10375                 }
10376         }
10377
10378         /* re-enable mdd interrupt cause */
10379         clear_bit(__I40E_MDD_EVENT_PENDING, pf->state);
10380         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
10381         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
10382         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
10383         i40e_flush(hw);
10384 }
10385
10386 static const char *i40e_tunnel_name(u8 type)
10387 {
10388         switch (type) {
10389         case UDP_TUNNEL_TYPE_VXLAN:
10390                 return "vxlan";
10391         case UDP_TUNNEL_TYPE_GENEVE:
10392                 return "geneve";
10393         default:
10394                 return "unknown";
10395         }
10396 }
10397
10398 /**
10399  * i40e_sync_udp_filters - Trigger a sync event for existing UDP filters
10400  * @pf: board private structure
10401  **/
10402 static void i40e_sync_udp_filters(struct i40e_pf *pf)
10403 {
10404         int i;
10405
10406         /* loop through and set pending bit for all active UDP filters */
10407         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
10408                 if (pf->udp_ports[i].port)
10409                         pf->pending_udp_bitmap |= BIT_ULL(i);
10410         }
10411
10412         set_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state);
10413 }
10414
10415 /**
10416  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
10417  * @pf: board private structure
10418  **/
10419 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
10420 {
10421         struct i40e_hw *hw = &pf->hw;
10422         u8 filter_index, type;
10423         u16 port;
10424         int i;
10425
10426         if (!test_and_clear_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state))
10427                 return;
10428
10429         /* acquire RTNL to maintain state of flags and port requests */
10430         rtnl_lock();
10431
10432         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
10433                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
10434                         struct i40e_udp_port_config *udp_port;
10435                         i40e_status ret = 0;
10436
10437                         udp_port = &pf->udp_ports[i];
10438                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
10439
10440                         port = READ_ONCE(udp_port->port);
10441                         type = READ_ONCE(udp_port->type);
10442                         filter_index = READ_ONCE(udp_port->filter_index);
10443
10444                         /* release RTNL while we wait on AQ command */
10445                         rtnl_unlock();
10446
10447                         if (port)
10448                                 ret = i40e_aq_add_udp_tunnel(hw, port,
10449                                                              type,
10450                                                              &filter_index,
10451                                                              NULL);
10452                         else if (filter_index != I40E_UDP_PORT_INDEX_UNUSED)
10453                                 ret = i40e_aq_del_udp_tunnel(hw, filter_index,
10454                                                              NULL);
10455
10456                         /* reacquire RTNL so we can update filter_index */
10457                         rtnl_lock();
10458
10459                         if (ret) {
10460                                 dev_info(&pf->pdev->dev,
10461                                          "%s %s port %d, index %d failed, err %s aq_err %s\n",
10462                                          i40e_tunnel_name(type),
10463                                          port ? "add" : "delete",
10464                                          port,
10465                                          filter_index,
10466                                          i40e_stat_str(&pf->hw, ret),
10467                                          i40e_aq_str(&pf->hw,
10468                                                      pf->hw.aq.asq_last_status));
10469                                 if (port) {
10470                                         /* failed to add, just reset port,
10471                                          * drop pending bit for any deletion
10472                                          */
10473                                         udp_port->port = 0;
10474                                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
10475                                 }
10476                         } else if (port) {
10477                                 /* record filter index on success */
10478                                 udp_port->filter_index = filter_index;
10479                         }
10480                 }
10481         }
10482
10483         rtnl_unlock();
10484 }
10485
10486 /**
10487  * i40e_service_task - Run the driver's async subtasks
10488  * @work: pointer to work_struct containing our data
10489  **/
10490 static void i40e_service_task(struct work_struct *work)
10491 {
10492         struct i40e_pf *pf = container_of(work,
10493                                           struct i40e_pf,
10494                                           service_task);
10495         unsigned long start_time = jiffies;
10496
10497         /* don't bother with service tasks if a reset is in progress */
10498         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
10499             test_bit(__I40E_SUSPENDED, pf->state))
10500                 return;
10501
10502         if (test_and_set_bit(__I40E_SERVICE_SCHED, pf->state))
10503                 return;
10504
10505         if (!test_bit(__I40E_RECOVERY_MODE, pf->state)) {
10506                 i40e_detect_recover_hung(pf->vsi[pf->lan_vsi]);
10507                 i40e_sync_filters_subtask(pf);
10508                 i40e_reset_subtask(pf);
10509                 i40e_handle_mdd_event(pf);
10510                 i40e_vc_process_vflr_event(pf);
10511                 i40e_watchdog_subtask(pf);
10512                 i40e_fdir_reinit_subtask(pf);
10513                 if (test_and_clear_bit(__I40E_CLIENT_RESET, pf->state)) {
10514                         /* Client subtask will reopen next time through. */
10515                         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi],
10516                                                            true);
10517                 } else {
10518                         i40e_client_subtask(pf);
10519                         if (test_and_clear_bit(__I40E_CLIENT_L2_CHANGE,
10520                                                pf->state))
10521                                 i40e_notify_client_of_l2_param_changes(
10522                                                                 pf->vsi[pf->lan_vsi]);
10523                 }
10524                 i40e_sync_filters_subtask(pf);
10525                 i40e_sync_udp_filters_subtask(pf);
10526         } else {
10527                 i40e_reset_subtask(pf);
10528         }
10529
10530         i40e_clean_adminq_subtask(pf);
10531
10532         /* flush memory to make sure state is correct before next watchdog */
10533         smp_mb__before_atomic();
10534         clear_bit(__I40E_SERVICE_SCHED, pf->state);
10535
10536         /* If the tasks have taken longer than one timer cycle or there
10537          * is more work to be done, reschedule the service task now
10538          * rather than wait for the timer to tick again.
10539          */
10540         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
10541             test_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state)             ||
10542             test_bit(__I40E_MDD_EVENT_PENDING, pf->state)                ||
10543             test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
10544                 i40e_service_event_schedule(pf);
10545 }
10546
10547 /**
10548  * i40e_service_timer - timer callback
10549  * @data: pointer to PF struct
10550  **/
10551 static void i40e_service_timer(struct timer_list *t)
10552 {
10553         struct i40e_pf *pf = from_timer(pf, t, service_timer);
10554
10555         mod_timer(&pf->service_timer,
10556                   round_jiffies(jiffies + pf->service_timer_period));
10557         i40e_service_event_schedule(pf);
10558 }
10559
10560 /**
10561  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
10562  * @vsi: the VSI being configured
10563  **/
10564 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
10565 {
10566         struct i40e_pf *pf = vsi->back;
10567
10568         switch (vsi->type) {
10569         case I40E_VSI_MAIN:
10570                 vsi->alloc_queue_pairs = pf->num_lan_qps;
10571                 if (!vsi->num_tx_desc)
10572                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10573                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10574                 if (!vsi->num_rx_desc)
10575                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10576                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10577                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
10578                         vsi->num_q_vectors = pf->num_lan_msix;
10579                 else
10580                         vsi->num_q_vectors = 1;
10581
10582                 break;
10583
10584         case I40E_VSI_FDIR:
10585                 vsi->alloc_queue_pairs = 1;
10586                 vsi->num_tx_desc = ALIGN(I40E_FDIR_RING_COUNT,
10587                                          I40E_REQ_DESCRIPTOR_MULTIPLE);
10588                 vsi->num_rx_desc = ALIGN(I40E_FDIR_RING_COUNT,
10589                                          I40E_REQ_DESCRIPTOR_MULTIPLE);
10590                 vsi->num_q_vectors = pf->num_fdsb_msix;
10591                 break;
10592
10593         case I40E_VSI_VMDQ2:
10594                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
10595                 if (!vsi->num_tx_desc)
10596                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10597                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10598                 if (!vsi->num_rx_desc)
10599                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10600                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10601                 vsi->num_q_vectors = pf->num_vmdq_msix;
10602                 break;
10603
10604         case I40E_VSI_SRIOV:
10605                 vsi->alloc_queue_pairs = pf->num_vf_qps;
10606                 if (!vsi->num_tx_desc)
10607                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10608                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10609                 if (!vsi->num_rx_desc)
10610                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10611                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10612                 break;
10613
10614         default:
10615                 WARN_ON(1);
10616                 return -ENODATA;
10617         }
10618
10619         return 0;
10620 }
10621
10622 /**
10623  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
10624  * @vsi: VSI pointer
10625  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
10626  *
10627  * On error: returns error code (negative)
10628  * On success: returns 0
10629  **/
10630 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
10631 {
10632         struct i40e_ring **next_rings;
10633         int size;
10634         int ret = 0;
10635
10636         /* allocate memory for both Tx, XDP Tx and Rx ring pointers */
10637         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs *
10638                (i40e_enabled_xdp_vsi(vsi) ? 3 : 2);
10639         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
10640         if (!vsi->tx_rings)
10641                 return -ENOMEM;
10642         next_rings = vsi->tx_rings + vsi->alloc_queue_pairs;
10643         if (i40e_enabled_xdp_vsi(vsi)) {
10644                 vsi->xdp_rings = next_rings;
10645                 next_rings += vsi->alloc_queue_pairs;
10646         }
10647         vsi->rx_rings = next_rings;
10648
10649         if (alloc_qvectors) {
10650                 /* allocate memory for q_vector pointers */
10651                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
10652                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
10653                 if (!vsi->q_vectors) {
10654                         ret = -ENOMEM;
10655                         goto err_vectors;
10656                 }
10657         }
10658         return ret;
10659
10660 err_vectors:
10661         kfree(vsi->tx_rings);
10662         return ret;
10663 }
10664
10665 /**
10666  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
10667  * @pf: board private structure
10668  * @type: type of VSI
10669  *
10670  * On error: returns error code (negative)
10671  * On success: returns vsi index in PF (positive)
10672  **/
10673 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
10674 {
10675         int ret = -ENODEV;
10676         struct i40e_vsi *vsi;
10677         int vsi_idx;
10678         int i;
10679
10680         /* Need to protect the allocation of the VSIs at the PF level */
10681         mutex_lock(&pf->switch_mutex);
10682
10683         /* VSI list may be fragmented if VSI creation/destruction has
10684          * been happening.  We can afford to do a quick scan to look
10685          * for any free VSIs in the list.
10686          *
10687          * find next empty vsi slot, looping back around if necessary
10688          */
10689         i = pf->next_vsi;
10690         while (i < pf->num_alloc_vsi && pf->vsi[i])
10691                 i++;
10692         if (i >= pf->num_alloc_vsi) {
10693                 i = 0;
10694                 while (i < pf->next_vsi && pf->vsi[i])
10695                         i++;
10696         }
10697
10698         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
10699                 vsi_idx = i;             /* Found one! */
10700         } else {
10701                 ret = -ENODEV;
10702                 goto unlock_pf;  /* out of VSI slots! */
10703         }
10704         pf->next_vsi = ++i;
10705
10706         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
10707         if (!vsi) {
10708                 ret = -ENOMEM;
10709                 goto unlock_pf;
10710         }
10711         vsi->type = type;
10712         vsi->back = pf;
10713         set_bit(__I40E_VSI_DOWN, vsi->state);
10714         vsi->flags = 0;
10715         vsi->idx = vsi_idx;
10716         vsi->int_rate_limit = 0;
10717         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
10718                                 pf->rss_table_size : 64;
10719         vsi->netdev_registered = false;
10720         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
10721         hash_init(vsi->mac_filter_hash);
10722         vsi->irqs_ready = false;
10723
10724         if (type == I40E_VSI_MAIN) {
10725                 vsi->af_xdp_zc_qps = bitmap_zalloc(pf->num_lan_qps, GFP_KERNEL);
10726                 if (!vsi->af_xdp_zc_qps)
10727                         goto err_rings;
10728         }
10729
10730         ret = i40e_set_num_rings_in_vsi(vsi);
10731         if (ret)
10732                 goto err_rings;
10733
10734         ret = i40e_vsi_alloc_arrays(vsi, true);
10735         if (ret)
10736                 goto err_rings;
10737
10738         /* Setup default MSIX irq handler for VSI */
10739         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
10740
10741         /* Initialize VSI lock */
10742         spin_lock_init(&vsi->mac_filter_hash_lock);
10743         pf->vsi[vsi_idx] = vsi;
10744         ret = vsi_idx;
10745         goto unlock_pf;
10746
10747 err_rings:
10748         bitmap_free(vsi->af_xdp_zc_qps);
10749         pf->next_vsi = i - 1;
10750         kfree(vsi);
10751 unlock_pf:
10752         mutex_unlock(&pf->switch_mutex);
10753         return ret;
10754 }
10755
10756 /**
10757  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
10758  * @vsi: VSI pointer
10759  * @free_qvectors: a bool to specify if q_vectors need to be freed.
10760  *
10761  * On error: returns error code (negative)
10762  * On success: returns 0
10763  **/
10764 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
10765 {
10766         /* free the ring and vector containers */
10767         if (free_qvectors) {
10768                 kfree(vsi->q_vectors);
10769                 vsi->q_vectors = NULL;
10770         }
10771         kfree(vsi->tx_rings);
10772         vsi->tx_rings = NULL;
10773         vsi->rx_rings = NULL;
10774         vsi->xdp_rings = NULL;
10775 }
10776
10777 /**
10778  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
10779  * and lookup table
10780  * @vsi: Pointer to VSI structure
10781  */
10782 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
10783 {
10784         if (!vsi)
10785                 return;
10786
10787         kfree(vsi->rss_hkey_user);
10788         vsi->rss_hkey_user = NULL;
10789
10790         kfree(vsi->rss_lut_user);
10791         vsi->rss_lut_user = NULL;
10792 }
10793
10794 /**
10795  * i40e_vsi_clear - Deallocate the VSI provided
10796  * @vsi: the VSI being un-configured
10797  **/
10798 static int i40e_vsi_clear(struct i40e_vsi *vsi)
10799 {
10800         struct i40e_pf *pf;
10801
10802         if (!vsi)
10803                 return 0;
10804
10805         if (!vsi->back)
10806                 goto free_vsi;
10807         pf = vsi->back;
10808
10809         mutex_lock(&pf->switch_mutex);
10810         if (!pf->vsi[vsi->idx]) {
10811                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](type %d)\n",
10812                         vsi->idx, vsi->idx, vsi->type);
10813                 goto unlock_vsi;
10814         }
10815
10816         if (pf->vsi[vsi->idx] != vsi) {
10817                 dev_err(&pf->pdev->dev,
10818                         "pf->vsi[%d](type %d) != vsi[%d](type %d): no free!\n",
10819                         pf->vsi[vsi->idx]->idx,
10820                         pf->vsi[vsi->idx]->type,
10821                         vsi->idx, vsi->type);
10822                 goto unlock_vsi;
10823         }
10824
10825         /* updates the PF for this cleared vsi */
10826         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
10827         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
10828
10829         bitmap_free(vsi->af_xdp_zc_qps);
10830         i40e_vsi_free_arrays(vsi, true);
10831         i40e_clear_rss_config_user(vsi);
10832
10833         pf->vsi[vsi->idx] = NULL;
10834         if (vsi->idx < pf->next_vsi)
10835                 pf->next_vsi = vsi->idx;
10836
10837 unlock_vsi:
10838         mutex_unlock(&pf->switch_mutex);
10839 free_vsi:
10840         kfree(vsi);
10841
10842         return 0;
10843 }
10844
10845 /**
10846  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
10847  * @vsi: the VSI being cleaned
10848  **/
10849 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
10850 {
10851         int i;
10852
10853         if (vsi->tx_rings && vsi->tx_rings[0]) {
10854                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
10855                         kfree_rcu(vsi->tx_rings[i], rcu);
10856                         WRITE_ONCE(vsi->tx_rings[i], NULL);
10857                         WRITE_ONCE(vsi->rx_rings[i], NULL);
10858                         if (vsi->xdp_rings)
10859                                 WRITE_ONCE(vsi->xdp_rings[i], NULL);
10860                 }
10861         }
10862 }
10863
10864 /**
10865  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
10866  * @vsi: the VSI being configured
10867  **/
10868 static int i40e_alloc_rings(struct i40e_vsi *vsi)
10869 {
10870         int i, qpv = i40e_enabled_xdp_vsi(vsi) ? 3 : 2;
10871         struct i40e_pf *pf = vsi->back;
10872         struct i40e_ring *ring;
10873
10874         /* Set basic values in the rings to be used later during open() */
10875         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
10876                 /* allocate space for both Tx and Rx in one shot */
10877                 ring = kcalloc(qpv, sizeof(struct i40e_ring), GFP_KERNEL);
10878                 if (!ring)
10879                         goto err_out;
10880
10881                 ring->queue_index = i;
10882                 ring->reg_idx = vsi->base_queue + i;
10883                 ring->ring_active = false;
10884                 ring->vsi = vsi;
10885                 ring->netdev = vsi->netdev;
10886                 ring->dev = &pf->pdev->dev;
10887                 ring->count = vsi->num_tx_desc;
10888                 ring->size = 0;
10889                 ring->dcb_tc = 0;
10890                 if (vsi->back->hw_features & I40E_HW_WB_ON_ITR_CAPABLE)
10891                         ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
10892                 ring->itr_setting = pf->tx_itr_default;
10893                 WRITE_ONCE(vsi->tx_rings[i], ring++);
10894
10895                 if (!i40e_enabled_xdp_vsi(vsi))
10896                         goto setup_rx;
10897
10898                 ring->queue_index = vsi->alloc_queue_pairs + i;
10899                 ring->reg_idx = vsi->base_queue + ring->queue_index;
10900                 ring->ring_active = false;
10901                 ring->vsi = vsi;
10902                 ring->netdev = NULL;
10903                 ring->dev = &pf->pdev->dev;
10904                 ring->count = vsi->num_tx_desc;
10905                 ring->size = 0;
10906                 ring->dcb_tc = 0;
10907                 if (vsi->back->hw_features & I40E_HW_WB_ON_ITR_CAPABLE)
10908                         ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
10909                 set_ring_xdp(ring);
10910                 ring->itr_setting = pf->tx_itr_default;
10911                 WRITE_ONCE(vsi->xdp_rings[i], ring++);
10912
10913 setup_rx:
10914                 ring->queue_index = i;
10915                 ring->reg_idx = vsi->base_queue + i;
10916                 ring->ring_active = false;
10917                 ring->vsi = vsi;
10918                 ring->netdev = vsi->netdev;
10919                 ring->dev = &pf->pdev->dev;
10920                 ring->count = vsi->num_rx_desc;
10921                 ring->size = 0;
10922                 ring->dcb_tc = 0;
10923                 ring->itr_setting = pf->rx_itr_default;
10924                 WRITE_ONCE(vsi->rx_rings[i], ring);
10925         }
10926
10927         return 0;
10928
10929 err_out:
10930         i40e_vsi_clear_rings(vsi);
10931         return -ENOMEM;
10932 }
10933
10934 /**
10935  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
10936  * @pf: board private structure
10937  * @vectors: the number of MSI-X vectors to request
10938  *
10939  * Returns the number of vectors reserved, or error
10940  **/
10941 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
10942 {
10943         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
10944                                         I40E_MIN_MSIX, vectors);
10945         if (vectors < 0) {
10946                 dev_info(&pf->pdev->dev,
10947                          "MSI-X vector reservation failed: %d\n", vectors);
10948                 vectors = 0;
10949         }
10950
10951         return vectors;
10952 }
10953
10954 /**
10955  * i40e_init_msix - Setup the MSIX capability
10956  * @pf: board private structure
10957  *
10958  * Work with the OS to set up the MSIX vectors needed.
10959  *
10960  * Returns the number of vectors reserved or negative on failure
10961  **/
10962 static int i40e_init_msix(struct i40e_pf *pf)
10963 {
10964         struct i40e_hw *hw = &pf->hw;
10965         int cpus, extra_vectors;
10966         int vectors_left;
10967         int v_budget, i;
10968         int v_actual;
10969         int iwarp_requested = 0;
10970
10971         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
10972                 return -ENODEV;
10973
10974         /* The number of vectors we'll request will be comprised of:
10975          *   - Add 1 for "other" cause for Admin Queue events, etc.
10976          *   - The number of LAN queue pairs
10977          *      - Queues being used for RSS.
10978          *              We don't need as many as max_rss_size vectors.
10979          *              use rss_size instead in the calculation since that
10980          *              is governed by number of cpus in the system.
10981          *      - assumes symmetric Tx/Rx pairing
10982          *   - The number of VMDq pairs
10983          *   - The CPU count within the NUMA node if iWARP is enabled
10984          * Once we count this up, try the request.
10985          *
10986          * If we can't get what we want, we'll simplify to nearly nothing
10987          * and try again.  If that still fails, we punt.
10988          */
10989         vectors_left = hw->func_caps.num_msix_vectors;
10990         v_budget = 0;
10991
10992         /* reserve one vector for miscellaneous handler */
10993         if (vectors_left) {
10994                 v_budget++;
10995                 vectors_left--;
10996         }
10997
10998         /* reserve some vectors for the main PF traffic queues. Initially we
10999          * only reserve at most 50% of the available vectors, in the case that
11000          * the number of online CPUs is large. This ensures that we can enable
11001          * extra features as well. Once we've enabled the other features, we
11002          * will use any remaining vectors to reach as close as we can to the
11003          * number of online CPUs.
11004          */
11005         cpus = num_online_cpus();
11006         pf->num_lan_msix = min_t(int, cpus, vectors_left / 2);
11007         vectors_left -= pf->num_lan_msix;
11008
11009         /* reserve one vector for sideband flow director */
11010         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
11011                 if (vectors_left) {
11012                         pf->num_fdsb_msix = 1;
11013                         v_budget++;
11014                         vectors_left--;
11015                 } else {
11016                         pf->num_fdsb_msix = 0;
11017                 }
11018         }
11019
11020         /* can we reserve enough for iWARP? */
11021         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11022                 iwarp_requested = pf->num_iwarp_msix;
11023
11024                 if (!vectors_left)
11025                         pf->num_iwarp_msix = 0;
11026                 else if (vectors_left < pf->num_iwarp_msix)
11027                         pf->num_iwarp_msix = 1;
11028                 v_budget += pf->num_iwarp_msix;
11029                 vectors_left -= pf->num_iwarp_msix;
11030         }
11031
11032         /* any vectors left over go for VMDq support */
11033         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
11034                 if (!vectors_left) {
11035                         pf->num_vmdq_msix = 0;
11036                         pf->num_vmdq_qps = 0;
11037                 } else {
11038                         int vmdq_vecs_wanted =
11039                                 pf->num_vmdq_vsis * pf->num_vmdq_qps;
11040                         int vmdq_vecs =
11041                                 min_t(int, vectors_left, vmdq_vecs_wanted);
11042
11043                         /* if we're short on vectors for what's desired, we limit
11044                          * the queues per vmdq.  If this is still more than are
11045                          * available, the user will need to change the number of
11046                          * queues/vectors used by the PF later with the ethtool
11047                          * channels command
11048                          */
11049                         if (vectors_left < vmdq_vecs_wanted) {
11050                                 pf->num_vmdq_qps = 1;
11051                                 vmdq_vecs_wanted = pf->num_vmdq_vsis;
11052                                 vmdq_vecs = min_t(int,
11053                                                   vectors_left,
11054                                                   vmdq_vecs_wanted);
11055                         }
11056                         pf->num_vmdq_msix = pf->num_vmdq_qps;
11057
11058                         v_budget += vmdq_vecs;
11059                         vectors_left -= vmdq_vecs;
11060                 }
11061         }
11062
11063         /* On systems with a large number of SMP cores, we previously limited
11064          * the number of vectors for num_lan_msix to be at most 50% of the
11065          * available vectors, to allow for other features. Now, we add back
11066          * the remaining vectors. However, we ensure that the total
11067          * num_lan_msix will not exceed num_online_cpus(). To do this, we
11068          * calculate the number of vectors we can add without going over the
11069          * cap of CPUs. For systems with a small number of CPUs this will be
11070          * zero.
11071          */
11072         extra_vectors = min_t(int, cpus - pf->num_lan_msix, vectors_left);
11073         pf->num_lan_msix += extra_vectors;
11074         vectors_left -= extra_vectors;
11075
11076         WARN(vectors_left < 0,
11077              "Calculation of remaining vectors underflowed. This is an accounting bug when determining total MSI-X vectors.\n");
11078
11079         v_budget += pf->num_lan_msix;
11080         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
11081                                    GFP_KERNEL);
11082         if (!pf->msix_entries)
11083                 return -ENOMEM;
11084
11085         for (i = 0; i < v_budget; i++)
11086                 pf->msix_entries[i].entry = i;
11087         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
11088
11089         if (v_actual < I40E_MIN_MSIX) {
11090                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
11091                 kfree(pf->msix_entries);
11092                 pf->msix_entries = NULL;
11093                 pci_disable_msix(pf->pdev);
11094                 return -ENODEV;
11095
11096         } else if (v_actual == I40E_MIN_MSIX) {
11097                 /* Adjust for minimal MSIX use */
11098                 pf->num_vmdq_vsis = 0;
11099                 pf->num_vmdq_qps = 0;
11100                 pf->num_lan_qps = 1;
11101                 pf->num_lan_msix = 1;
11102
11103         } else if (v_actual != v_budget) {
11104                 /* If we have limited resources, we will start with no vectors
11105                  * for the special features and then allocate vectors to some
11106                  * of these features based on the policy and at the end disable
11107                  * the features that did not get any vectors.
11108                  */
11109                 int vec;
11110
11111                 dev_info(&pf->pdev->dev,
11112                          "MSI-X vector limit reached with %d, wanted %d, attempting to redistribute vectors\n",
11113                          v_actual, v_budget);
11114                 /* reserve the misc vector */
11115                 vec = v_actual - 1;
11116
11117                 /* Scale vector usage down */
11118                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
11119                 pf->num_vmdq_vsis = 1;
11120                 pf->num_vmdq_qps = 1;
11121
11122                 /* partition out the remaining vectors */
11123                 switch (vec) {
11124                 case 2:
11125                         pf->num_lan_msix = 1;
11126                         break;
11127                 case 3:
11128                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11129                                 pf->num_lan_msix = 1;
11130                                 pf->num_iwarp_msix = 1;
11131                         } else {
11132                                 pf->num_lan_msix = 2;
11133                         }
11134                         break;
11135                 default:
11136                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11137                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
11138                                                  iwarp_requested);
11139                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
11140                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
11141                         } else {
11142                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
11143                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
11144                         }
11145                         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
11146                                 pf->num_fdsb_msix = 1;
11147                                 vec--;
11148                         }
11149                         pf->num_lan_msix = min_t(int,
11150                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
11151                                                               pf->num_lan_msix);
11152                         pf->num_lan_qps = pf->num_lan_msix;
11153                         break;
11154                 }
11155         }
11156
11157         if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
11158             (pf->num_fdsb_msix == 0)) {
11159                 dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n");
11160                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
11161                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
11162         }
11163         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
11164             (pf->num_vmdq_msix == 0)) {
11165                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
11166                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
11167         }
11168
11169         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
11170             (pf->num_iwarp_msix == 0)) {
11171                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
11172                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11173         }
11174         i40e_debug(&pf->hw, I40E_DEBUG_INIT,
11175                    "MSI-X vector distribution: PF %d, VMDq %d, FDSB %d, iWARP %d\n",
11176                    pf->num_lan_msix,
11177                    pf->num_vmdq_msix * pf->num_vmdq_vsis,
11178                    pf->num_fdsb_msix,
11179                    pf->num_iwarp_msix);
11180
11181         return v_actual;
11182 }
11183
11184 /**
11185  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
11186  * @vsi: the VSI being configured
11187  * @v_idx: index of the vector in the vsi struct
11188  * @cpu: cpu to be used on affinity_mask
11189  *
11190  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
11191  **/
11192 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
11193 {
11194         struct i40e_q_vector *q_vector;
11195
11196         /* allocate q_vector */
11197         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
11198         if (!q_vector)
11199                 return -ENOMEM;
11200
11201         q_vector->vsi = vsi;
11202         q_vector->v_idx = v_idx;
11203         cpumask_copy(&q_vector->affinity_mask, cpu_possible_mask);
11204
11205         if (vsi->netdev)
11206                 netif_napi_add(vsi->netdev, &q_vector->napi,
11207                                i40e_napi_poll, NAPI_POLL_WEIGHT);
11208
11209         /* tie q_vector and vsi together */
11210         vsi->q_vectors[v_idx] = q_vector;
11211
11212         return 0;
11213 }
11214
11215 /**
11216  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
11217  * @vsi: the VSI being configured
11218  *
11219  * We allocate one q_vector per queue interrupt.  If allocation fails we
11220  * return -ENOMEM.
11221  **/
11222 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
11223 {
11224         struct i40e_pf *pf = vsi->back;
11225         int err, v_idx, num_q_vectors, current_cpu;
11226
11227         /* if not MSIX, give the one vector only to the LAN VSI */
11228         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
11229                 num_q_vectors = vsi->num_q_vectors;
11230         else if (vsi == pf->vsi[pf->lan_vsi])
11231                 num_q_vectors = 1;
11232         else
11233                 return -EINVAL;
11234
11235         current_cpu = cpumask_first(cpu_online_mask);
11236
11237         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
11238                 err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
11239                 if (err)
11240                         goto err_out;
11241                 current_cpu = cpumask_next(current_cpu, cpu_online_mask);
11242                 if (unlikely(current_cpu >= nr_cpu_ids))
11243                         current_cpu = cpumask_first(cpu_online_mask);
11244         }
11245
11246         return 0;
11247
11248 err_out:
11249         while (v_idx--)
11250                 i40e_free_q_vector(vsi, v_idx);
11251
11252         return err;
11253 }
11254
11255 /**
11256  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
11257  * @pf: board private structure to initialize
11258  **/
11259 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
11260 {
11261         int vectors = 0;
11262         ssize_t size;
11263
11264         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11265                 vectors = i40e_init_msix(pf);
11266                 if (vectors < 0) {
11267                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
11268                                        I40E_FLAG_IWARP_ENABLED  |
11269                                        I40E_FLAG_RSS_ENABLED    |
11270                                        I40E_FLAG_DCB_CAPABLE    |
11271                                        I40E_FLAG_DCB_ENABLED    |
11272                                        I40E_FLAG_SRIOV_ENABLED  |
11273                                        I40E_FLAG_FD_SB_ENABLED  |
11274                                        I40E_FLAG_FD_ATR_ENABLED |
11275                                        I40E_FLAG_VMDQ_ENABLED);
11276                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
11277
11278                         /* rework the queue expectations without MSIX */
11279                         i40e_determine_queue_usage(pf);
11280                 }
11281         }
11282
11283         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11284             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
11285                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
11286                 vectors = pci_enable_msi(pf->pdev);
11287                 if (vectors < 0) {
11288                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
11289                                  vectors);
11290                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
11291                 }
11292                 vectors = 1;  /* one MSI or Legacy vector */
11293         }
11294
11295         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
11296                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
11297
11298         /* set up vector assignment tracking */
11299         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
11300         pf->irq_pile = kzalloc(size, GFP_KERNEL);
11301         if (!pf->irq_pile)
11302                 return -ENOMEM;
11303
11304         pf->irq_pile->num_entries = vectors;
11305         pf->irq_pile->search_hint = 0;
11306
11307         /* track first vector for misc interrupts, ignore return */
11308         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
11309
11310         return 0;
11311 }
11312
11313 /**
11314  * i40e_restore_interrupt_scheme - Restore the interrupt scheme
11315  * @pf: private board data structure
11316  *
11317  * Restore the interrupt scheme that was cleared when we suspended the
11318  * device. This should be called during resume to re-allocate the q_vectors
11319  * and reacquire IRQs.
11320  */
11321 static int i40e_restore_interrupt_scheme(struct i40e_pf *pf)
11322 {
11323         int err, i;
11324
11325         /* We cleared the MSI and MSI-X flags when disabling the old interrupt
11326          * scheme. We need to re-enabled them here in order to attempt to
11327          * re-acquire the MSI or MSI-X vectors
11328          */
11329         pf->flags |= (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
11330
11331         err = i40e_init_interrupt_scheme(pf);
11332         if (err)
11333                 return err;
11334
11335         /* Now that we've re-acquired IRQs, we need to remap the vectors and
11336          * rings together again.
11337          */
11338         for (i = 0; i < pf->num_alloc_vsi; i++) {
11339                 if (pf->vsi[i]) {
11340                         err = i40e_vsi_alloc_q_vectors(pf->vsi[i]);
11341                         if (err)
11342                                 goto err_unwind;
11343                         i40e_vsi_map_rings_to_vectors(pf->vsi[i]);
11344                 }
11345         }
11346
11347         err = i40e_setup_misc_vector(pf);
11348         if (err)
11349                 goto err_unwind;
11350
11351         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
11352                 i40e_client_update_msix_info(pf);
11353
11354         return 0;
11355
11356 err_unwind:
11357         while (i--) {
11358                 if (pf->vsi[i])
11359                         i40e_vsi_free_q_vectors(pf->vsi[i]);
11360         }
11361
11362         return err;
11363 }
11364
11365 /**
11366  * i40e_setup_misc_vector_for_recovery_mode - Setup the misc vector to handle
11367  * non queue events in recovery mode
11368  * @pf: board private structure
11369  *
11370  * This sets up the handler for MSIX 0 or MSI/legacy, which is used to manage
11371  * the non-queue interrupts, e.g. AdminQ and errors in recovery mode.
11372  * This is handled differently than in recovery mode since no Tx/Rx resources
11373  * are being allocated.
11374  **/
11375 static int i40e_setup_misc_vector_for_recovery_mode(struct i40e_pf *pf)
11376 {
11377         int err;
11378
11379         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11380                 err = i40e_setup_misc_vector(pf);
11381
11382                 if (err) {
11383                         dev_info(&pf->pdev->dev,
11384                                  "MSI-X misc vector request failed, error %d\n",
11385                                  err);
11386                         return err;
11387                 }
11388         } else {
11389                 u32 flags = pf->flags & I40E_FLAG_MSI_ENABLED ? 0 : IRQF_SHARED;
11390
11391                 err = request_irq(pf->pdev->irq, i40e_intr, flags,
11392                                   pf->int_name, pf);
11393
11394                 if (err) {
11395                         dev_info(&pf->pdev->dev,
11396                                  "MSI/legacy misc vector request failed, error %d\n",
11397                                  err);
11398                         return err;
11399                 }
11400                 i40e_enable_misc_int_causes(pf);
11401                 i40e_irq_dynamic_enable_icr0(pf);
11402         }
11403
11404         return 0;
11405 }
11406
11407 /**
11408  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
11409  * @pf: board private structure
11410  *
11411  * This sets up the handler for MSIX 0, which is used to manage the
11412  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
11413  * when in MSI or Legacy interrupt mode.
11414  **/
11415 static int i40e_setup_misc_vector(struct i40e_pf *pf)
11416 {
11417         struct i40e_hw *hw = &pf->hw;
11418         int err = 0;
11419
11420         /* Only request the IRQ once, the first time through. */
11421         if (!test_and_set_bit(__I40E_MISC_IRQ_REQUESTED, pf->state)) {
11422                 err = request_irq(pf->msix_entries[0].vector,
11423                                   i40e_intr, 0, pf->int_name, pf);
11424                 if (err) {
11425                         clear_bit(__I40E_MISC_IRQ_REQUESTED, pf->state);
11426                         dev_info(&pf->pdev->dev,
11427                                  "request_irq for %s failed: %d\n",
11428                                  pf->int_name, err);
11429                         return -EFAULT;
11430                 }
11431         }
11432
11433         i40e_enable_misc_int_causes(pf);
11434
11435         /* associate no queues to the misc vector */
11436         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
11437         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K >> 1);
11438
11439         i40e_flush(hw);
11440
11441         i40e_irq_dynamic_enable_icr0(pf);
11442
11443         return err;
11444 }
11445
11446 /**
11447  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
11448  * @vsi: Pointer to vsi structure
11449  * @seed: Buffter to store the hash keys
11450  * @lut: Buffer to store the lookup table entries
11451  * @lut_size: Size of buffer to store the lookup table entries
11452  *
11453  * Return 0 on success, negative on failure
11454  */
11455 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
11456                            u8 *lut, u16 lut_size)
11457 {
11458         struct i40e_pf *pf = vsi->back;
11459         struct i40e_hw *hw = &pf->hw;
11460         int ret = 0;
11461
11462         if (seed) {
11463                 ret = i40e_aq_get_rss_key(hw, vsi->id,
11464                         (struct i40e_aqc_get_set_rss_key_data *)seed);
11465                 if (ret) {
11466                         dev_info(&pf->pdev->dev,
11467                                  "Cannot get RSS key, err %s aq_err %s\n",
11468                                  i40e_stat_str(&pf->hw, ret),
11469                                  i40e_aq_str(&pf->hw,
11470                                              pf->hw.aq.asq_last_status));
11471                         return ret;
11472                 }
11473         }
11474
11475         if (lut) {
11476                 bool pf_lut = vsi->type == I40E_VSI_MAIN;
11477
11478                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
11479                 if (ret) {
11480                         dev_info(&pf->pdev->dev,
11481                                  "Cannot get RSS lut, err %s aq_err %s\n",
11482                                  i40e_stat_str(&pf->hw, ret),
11483                                  i40e_aq_str(&pf->hw,
11484                                              pf->hw.aq.asq_last_status));
11485                         return ret;
11486                 }
11487         }
11488
11489         return ret;
11490 }
11491
11492 /**
11493  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
11494  * @vsi: Pointer to vsi structure
11495  * @seed: RSS hash seed
11496  * @lut: Lookup table
11497  * @lut_size: Lookup table size
11498  *
11499  * Returns 0 on success, negative on failure
11500  **/
11501 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
11502                                const u8 *lut, u16 lut_size)
11503 {
11504         struct i40e_pf *pf = vsi->back;
11505         struct i40e_hw *hw = &pf->hw;
11506         u16 vf_id = vsi->vf_id;
11507         u8 i;
11508
11509         /* Fill out hash function seed */
11510         if (seed) {
11511                 u32 *seed_dw = (u32 *)seed;
11512
11513                 if (vsi->type == I40E_VSI_MAIN) {
11514                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
11515                                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
11516                 } else if (vsi->type == I40E_VSI_SRIOV) {
11517                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
11518                                 wr32(hw, I40E_VFQF_HKEY1(i, vf_id), seed_dw[i]);
11519                 } else {
11520                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
11521                 }
11522         }
11523
11524         if (lut) {
11525                 u32 *lut_dw = (u32 *)lut;
11526
11527                 if (vsi->type == I40E_VSI_MAIN) {
11528                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
11529                                 return -EINVAL;
11530                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
11531                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
11532                 } else if (vsi->type == I40E_VSI_SRIOV) {
11533                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
11534                                 return -EINVAL;
11535                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
11536                                 wr32(hw, I40E_VFQF_HLUT1(i, vf_id), lut_dw[i]);
11537                 } else {
11538                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
11539                 }
11540         }
11541         i40e_flush(hw);
11542
11543         return 0;
11544 }
11545
11546 /**
11547  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
11548  * @vsi: Pointer to VSI structure
11549  * @seed: Buffer to store the keys
11550  * @lut: Buffer to store the lookup table entries
11551  * @lut_size: Size of buffer to store the lookup table entries
11552  *
11553  * Returns 0 on success, negative on failure
11554  */
11555 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
11556                             u8 *lut, u16 lut_size)
11557 {
11558         struct i40e_pf *pf = vsi->back;
11559         struct i40e_hw *hw = &pf->hw;
11560         u16 i;
11561
11562         if (seed) {
11563                 u32 *seed_dw = (u32 *)seed;
11564
11565                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
11566                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
11567         }
11568         if (lut) {
11569                 u32 *lut_dw = (u32 *)lut;
11570
11571                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
11572                         return -EINVAL;
11573                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
11574                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
11575         }
11576
11577         return 0;
11578 }
11579
11580 /**
11581  * i40e_config_rss - Configure RSS keys and lut
11582  * @vsi: Pointer to VSI structure
11583  * @seed: RSS hash seed
11584  * @lut: Lookup table
11585  * @lut_size: Lookup table size
11586  *
11587  * Returns 0 on success, negative on failure
11588  */
11589 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
11590 {
11591         struct i40e_pf *pf = vsi->back;
11592
11593         if (pf->hw_features & I40E_HW_RSS_AQ_CAPABLE)
11594                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
11595         else
11596                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
11597 }
11598
11599 /**
11600  * i40e_get_rss - Get RSS keys and lut
11601  * @vsi: Pointer to VSI structure
11602  * @seed: Buffer to store the keys
11603  * @lut: Buffer to store the lookup table entries
11604  * @lut_size: Size of buffer to store the lookup table entries
11605  *
11606  * Returns 0 on success, negative on failure
11607  */
11608 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
11609 {
11610         struct i40e_pf *pf = vsi->back;
11611
11612         if (pf->hw_features & I40E_HW_RSS_AQ_CAPABLE)
11613                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
11614         else
11615                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
11616 }
11617
11618 /**
11619  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
11620  * @pf: Pointer to board private structure
11621  * @lut: Lookup table
11622  * @rss_table_size: Lookup table size
11623  * @rss_size: Range of queue number for hashing
11624  */
11625 void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
11626                        u16 rss_table_size, u16 rss_size)
11627 {
11628         u16 i;
11629
11630         for (i = 0; i < rss_table_size; i++)
11631                 lut[i] = i % rss_size;
11632 }
11633
11634 /**
11635  * i40e_pf_config_rss - Prepare for RSS if used
11636  * @pf: board private structure
11637  **/
11638 static int i40e_pf_config_rss(struct i40e_pf *pf)
11639 {
11640         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
11641         u8 seed[I40E_HKEY_ARRAY_SIZE];
11642         u8 *lut;
11643         struct i40e_hw *hw = &pf->hw;
11644         u32 reg_val;
11645         u64 hena;
11646         int ret;
11647
11648         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
11649         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
11650                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
11651         hena |= i40e_pf_get_default_rss_hena(pf);
11652
11653         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
11654         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
11655
11656         /* Determine the RSS table size based on the hardware capabilities */
11657         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
11658         reg_val = (pf->rss_table_size == 512) ?
11659                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
11660                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
11661         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
11662
11663         /* Determine the RSS size of the VSI */
11664         if (!vsi->rss_size) {
11665                 u16 qcount;
11666                 /* If the firmware does something weird during VSI init, we
11667                  * could end up with zero TCs. Check for that to avoid
11668                  * divide-by-zero. It probably won't pass traffic, but it also
11669                  * won't panic.
11670                  */
11671                 qcount = vsi->num_queue_pairs /
11672                          (vsi->tc_config.numtc ? vsi->tc_config.numtc : 1);
11673                 vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
11674         }
11675         if (!vsi->rss_size)
11676                 return -EINVAL;
11677
11678         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
11679         if (!lut)
11680                 return -ENOMEM;
11681
11682         /* Use user configured lut if there is one, otherwise use default */
11683         if (vsi->rss_lut_user)
11684                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
11685         else
11686                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
11687
11688         /* Use user configured hash key if there is one, otherwise
11689          * use default.
11690          */
11691         if (vsi->rss_hkey_user)
11692                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
11693         else
11694                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
11695         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
11696         kfree(lut);
11697
11698         return ret;
11699 }
11700
11701 /**
11702  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
11703  * @pf: board private structure
11704  * @queue_count: the requested queue count for rss.
11705  *
11706  * returns 0 if rss is not enabled, if enabled returns the final rss queue
11707  * count which may be different from the requested queue count.
11708  * Note: expects to be called while under rtnl_lock()
11709  **/
11710 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
11711 {
11712         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
11713         int new_rss_size;
11714
11715         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
11716                 return 0;
11717
11718         queue_count = min_t(int, queue_count, num_online_cpus());
11719         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
11720
11721         if (queue_count != vsi->num_queue_pairs) {
11722                 u16 qcount;
11723
11724                 vsi->req_queue_pairs = queue_count;
11725                 i40e_prep_for_reset(pf, true);
11726
11727                 pf->alloc_rss_size = new_rss_size;
11728
11729                 i40e_reset_and_rebuild(pf, true, true);
11730
11731                 /* Discard the user configured hash keys and lut, if less
11732                  * queues are enabled.
11733                  */
11734                 if (queue_count < vsi->rss_size) {
11735                         i40e_clear_rss_config_user(vsi);
11736                         dev_dbg(&pf->pdev->dev,
11737                                 "discard user configured hash keys and lut\n");
11738                 }
11739
11740                 /* Reset vsi->rss_size, as number of enabled queues changed */
11741                 qcount = vsi->num_queue_pairs / vsi->tc_config.numtc;
11742                 vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
11743
11744                 i40e_pf_config_rss(pf);
11745         }
11746         dev_info(&pf->pdev->dev, "User requested queue count/HW max RSS count:  %d/%d\n",
11747                  vsi->req_queue_pairs, pf->rss_size_max);
11748         return pf->alloc_rss_size;
11749 }
11750
11751 /**
11752  * i40e_get_partition_bw_setting - Retrieve BW settings for this PF partition
11753  * @pf: board private structure
11754  **/
11755 i40e_status i40e_get_partition_bw_setting(struct i40e_pf *pf)
11756 {
11757         i40e_status status;
11758         bool min_valid, max_valid;
11759         u32 max_bw, min_bw;
11760
11761         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
11762                                            &min_valid, &max_valid);
11763
11764         if (!status) {
11765                 if (min_valid)
11766                         pf->min_bw = min_bw;
11767                 if (max_valid)
11768                         pf->max_bw = max_bw;
11769         }
11770
11771         return status;
11772 }
11773
11774 /**
11775  * i40e_set_partition_bw_setting - Set BW settings for this PF partition
11776  * @pf: board private structure
11777  **/
11778 i40e_status i40e_set_partition_bw_setting(struct i40e_pf *pf)
11779 {
11780         struct i40e_aqc_configure_partition_bw_data bw_data;
11781         i40e_status status;
11782
11783         /* Set the valid bit for this PF */
11784         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
11785         bw_data.max_bw[pf->hw.pf_id] = pf->max_bw & I40E_ALT_BW_VALUE_MASK;
11786         bw_data.min_bw[pf->hw.pf_id] = pf->min_bw & I40E_ALT_BW_VALUE_MASK;
11787
11788         /* Set the new bandwidths */
11789         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
11790
11791         return status;
11792 }
11793
11794 /**
11795  * i40e_commit_partition_bw_setting - Commit BW settings for this PF partition
11796  * @pf: board private structure
11797  **/
11798 i40e_status i40e_commit_partition_bw_setting(struct i40e_pf *pf)
11799 {
11800         /* Commit temporary BW setting to permanent NVM image */
11801         enum i40e_admin_queue_err last_aq_status;
11802         i40e_status ret;
11803         u16 nvm_word;
11804
11805         if (pf->hw.partition_id != 1) {
11806                 dev_info(&pf->pdev->dev,
11807                          "Commit BW only works on partition 1! This is partition %d",
11808                          pf->hw.partition_id);
11809                 ret = I40E_NOT_SUPPORTED;
11810                 goto bw_commit_out;
11811         }
11812
11813         /* Acquire NVM for read access */
11814         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
11815         last_aq_status = pf->hw.aq.asq_last_status;
11816         if (ret) {
11817                 dev_info(&pf->pdev->dev,
11818                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
11819                          i40e_stat_str(&pf->hw, ret),
11820                          i40e_aq_str(&pf->hw, last_aq_status));
11821                 goto bw_commit_out;
11822         }
11823
11824         /* Read word 0x10 of NVM - SW compatibility word 1 */
11825         ret = i40e_aq_read_nvm(&pf->hw,
11826                                I40E_SR_NVM_CONTROL_WORD,
11827                                0x10, sizeof(nvm_word), &nvm_word,
11828                                false, NULL);
11829         /* Save off last admin queue command status before releasing
11830          * the NVM
11831          */
11832         last_aq_status = pf->hw.aq.asq_last_status;
11833         i40e_release_nvm(&pf->hw);
11834         if (ret) {
11835                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
11836                          i40e_stat_str(&pf->hw, ret),
11837                          i40e_aq_str(&pf->hw, last_aq_status));
11838                 goto bw_commit_out;
11839         }
11840
11841         /* Wait a bit for NVM release to complete */
11842         msleep(50);
11843
11844         /* Acquire NVM for write access */
11845         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
11846         last_aq_status = pf->hw.aq.asq_last_status;
11847         if (ret) {
11848                 dev_info(&pf->pdev->dev,
11849                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
11850                          i40e_stat_str(&pf->hw, ret),
11851                          i40e_aq_str(&pf->hw, last_aq_status));
11852                 goto bw_commit_out;
11853         }
11854         /* Write it back out unchanged to initiate update NVM,
11855          * which will force a write of the shadow (alt) RAM to
11856          * the NVM - thus storing the bandwidth values permanently.
11857          */
11858         ret = i40e_aq_update_nvm(&pf->hw,
11859                                  I40E_SR_NVM_CONTROL_WORD,
11860                                  0x10, sizeof(nvm_word),
11861                                  &nvm_word, true, 0, NULL);
11862         /* Save off last admin queue command status before releasing
11863          * the NVM
11864          */
11865         last_aq_status = pf->hw.aq.asq_last_status;
11866         i40e_release_nvm(&pf->hw);
11867         if (ret)
11868                 dev_info(&pf->pdev->dev,
11869                          "BW settings NOT SAVED, err %s aq_err %s\n",
11870                          i40e_stat_str(&pf->hw, ret),
11871                          i40e_aq_str(&pf->hw, last_aq_status));
11872 bw_commit_out:
11873
11874         return ret;
11875 }
11876
11877 /**
11878  * i40e_is_total_port_shutdown_enabled - read NVM and return value
11879  * if total port shutdown feature is enabled for this PF
11880  * @pf: board private structure
11881  **/
11882 static bool i40e_is_total_port_shutdown_enabled(struct i40e_pf *pf)
11883 {
11884 #define I40E_TOTAL_PORT_SHUTDOWN_ENABLED        BIT(4)
11885 #define I40E_FEATURES_ENABLE_PTR                0x2A
11886 #define I40E_CURRENT_SETTING_PTR                0x2B
11887 #define I40E_LINK_BEHAVIOR_WORD_OFFSET          0x2D
11888 #define I40E_LINK_BEHAVIOR_WORD_LENGTH          0x1
11889 #define I40E_LINK_BEHAVIOR_OS_FORCED_ENABLED    BIT(0)
11890 #define I40E_LINK_BEHAVIOR_PORT_BIT_LENGTH      4
11891         i40e_status read_status = I40E_SUCCESS;
11892         u16 sr_emp_sr_settings_ptr = 0;
11893         u16 features_enable = 0;
11894         u16 link_behavior = 0;
11895         bool ret = false;
11896
11897         read_status = i40e_read_nvm_word(&pf->hw,
11898                                          I40E_SR_EMP_SR_SETTINGS_PTR,
11899                                          &sr_emp_sr_settings_ptr);
11900         if (read_status)
11901                 goto err_nvm;
11902         read_status = i40e_read_nvm_word(&pf->hw,
11903                                          sr_emp_sr_settings_ptr +
11904                                          I40E_FEATURES_ENABLE_PTR,
11905                                          &features_enable);
11906         if (read_status)
11907                 goto err_nvm;
11908         if (I40E_TOTAL_PORT_SHUTDOWN_ENABLED & features_enable) {
11909                 read_status = i40e_read_nvm_module_data(&pf->hw,
11910                                                         I40E_SR_EMP_SR_SETTINGS_PTR,
11911                                                         I40E_CURRENT_SETTING_PTR,
11912                                                         I40E_LINK_BEHAVIOR_WORD_OFFSET,
11913                                                         I40E_LINK_BEHAVIOR_WORD_LENGTH,
11914                                                         &link_behavior);
11915                 if (read_status)
11916                         goto err_nvm;
11917                 link_behavior >>= (pf->hw.port * I40E_LINK_BEHAVIOR_PORT_BIT_LENGTH);
11918                 ret = I40E_LINK_BEHAVIOR_OS_FORCED_ENABLED & link_behavior;
11919         }
11920         return ret;
11921
11922 err_nvm:
11923         dev_warn(&pf->pdev->dev,
11924                  "total-port-shutdown feature is off due to read nvm error: %s\n",
11925                  i40e_stat_str(&pf->hw, read_status));
11926         return ret;
11927 }
11928
11929 /**
11930  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
11931  * @pf: board private structure to initialize
11932  *
11933  * i40e_sw_init initializes the Adapter private data structure.
11934  * Fields are initialized based on PCI device information and
11935  * OS network device settings (MTU size).
11936  **/
11937 static int i40e_sw_init(struct i40e_pf *pf)
11938 {
11939         int err = 0;
11940         int size;
11941
11942         /* Set default capability flags */
11943         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
11944                     I40E_FLAG_MSI_ENABLED     |
11945                     I40E_FLAG_MSIX_ENABLED;
11946
11947         /* Set default ITR */
11948         pf->rx_itr_default = I40E_ITR_RX_DEF;
11949         pf->tx_itr_default = I40E_ITR_TX_DEF;
11950
11951         /* Depending on PF configurations, it is possible that the RSS
11952          * maximum might end up larger than the available queues
11953          */
11954         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
11955         pf->alloc_rss_size = 1;
11956         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
11957         pf->rss_size_max = min_t(int, pf->rss_size_max,
11958                                  pf->hw.func_caps.num_tx_qp);
11959         if (pf->hw.func_caps.rss) {
11960                 pf->flags |= I40E_FLAG_RSS_ENABLED;
11961                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
11962                                            num_online_cpus());
11963         }
11964
11965         /* MFP mode enabled */
11966         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
11967                 pf->flags |= I40E_FLAG_MFP_ENABLED;
11968                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
11969                 if (i40e_get_partition_bw_setting(pf)) {
11970                         dev_warn(&pf->pdev->dev,
11971                                  "Could not get partition bw settings\n");
11972                 } else {
11973                         dev_info(&pf->pdev->dev,
11974                                  "Partition BW Min = %8.8x, Max = %8.8x\n",
11975                                  pf->min_bw, pf->max_bw);
11976
11977                         /* nudge the Tx scheduler */
11978                         i40e_set_partition_bw_setting(pf);
11979                 }
11980         }
11981
11982         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
11983             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
11984                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
11985                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
11986                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
11987                     pf->hw.num_partitions > 1)
11988                         dev_info(&pf->pdev->dev,
11989                                  "Flow Director Sideband mode Disabled in MFP mode\n");
11990                 else
11991                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
11992                 pf->fdir_pf_filter_count =
11993                                  pf->hw.func_caps.fd_filters_guaranteed;
11994                 pf->hw.fdir_shared_filter_count =
11995                                  pf->hw.func_caps.fd_filters_best_effort;
11996         }
11997
11998         if (pf->hw.mac.type == I40E_MAC_X722) {
11999                 pf->hw_features |= (I40E_HW_RSS_AQ_CAPABLE |
12000                                     I40E_HW_128_QP_RSS_CAPABLE |
12001                                     I40E_HW_ATR_EVICT_CAPABLE |
12002                                     I40E_HW_WB_ON_ITR_CAPABLE |
12003                                     I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE |
12004                                     I40E_HW_NO_PCI_LINK_CHECK |
12005                                     I40E_HW_USE_SET_LLDP_MIB |
12006                                     I40E_HW_GENEVE_OFFLOAD_CAPABLE |
12007                                     I40E_HW_PTP_L4_CAPABLE |
12008                                     I40E_HW_WOL_MC_MAGIC_PKT_WAKE |
12009                                     I40E_HW_OUTER_UDP_CSUM_CAPABLE);
12010
12011 #define I40E_FDEVICT_PCTYPE_DEFAULT 0xc03
12012                 if (rd32(&pf->hw, I40E_GLQF_FDEVICTENA(1)) !=
12013                     I40E_FDEVICT_PCTYPE_DEFAULT) {
12014                         dev_warn(&pf->pdev->dev,
12015                                  "FD EVICT PCTYPES are not right, disable FD HW EVICT\n");
12016                         pf->hw_features &= ~I40E_HW_ATR_EVICT_CAPABLE;
12017                 }
12018         } else if ((pf->hw.aq.api_maj_ver > 1) ||
12019                    ((pf->hw.aq.api_maj_ver == 1) &&
12020                     (pf->hw.aq.api_min_ver > 4))) {
12021                 /* Supported in FW API version higher than 1.4 */
12022                 pf->hw_features |= I40E_HW_GENEVE_OFFLOAD_CAPABLE;
12023         }
12024
12025         /* Enable HW ATR eviction if possible */
12026         if (pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE)
12027                 pf->flags |= I40E_FLAG_HW_ATR_EVICT_ENABLED;
12028
12029         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12030             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
12031             (pf->hw.aq.fw_maj_ver < 4))) {
12032                 pf->hw_features |= I40E_HW_RESTART_AUTONEG;
12033                 /* No DCB support  for FW < v4.33 */
12034                 pf->hw_features |= I40E_HW_NO_DCB_SUPPORT;
12035         }
12036
12037         /* Disable FW LLDP if FW < v4.3 */
12038         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12039             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
12040             (pf->hw.aq.fw_maj_ver < 4)))
12041                 pf->hw_features |= I40E_HW_STOP_FW_LLDP;
12042
12043         /* Use the FW Set LLDP MIB API if FW > v4.40 */
12044         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12045             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
12046             (pf->hw.aq.fw_maj_ver >= 5)))
12047                 pf->hw_features |= I40E_HW_USE_SET_LLDP_MIB;
12048
12049         /* Enable PTP L4 if FW > v6.0 */
12050         if (pf->hw.mac.type == I40E_MAC_XL710 &&
12051             pf->hw.aq.fw_maj_ver >= 6)
12052                 pf->hw_features |= I40E_HW_PTP_L4_CAPABLE;
12053
12054         if (pf->hw.func_caps.vmdq && num_online_cpus() != 1) {
12055                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
12056                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
12057                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
12058         }
12059
12060         if (pf->hw.func_caps.iwarp && num_online_cpus() != 1) {
12061                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
12062                 /* IWARP needs one extra vector for CQP just like MISC.*/
12063                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
12064         }
12065         /* Stopping FW LLDP engine is supported on XL710 and X722
12066          * starting from FW versions determined in i40e_init_adminq.
12067          * Stopping the FW LLDP engine is not supported on XL710
12068          * if NPAR is functioning so unset this hw flag in this case.
12069          */
12070         if (pf->hw.mac.type == I40E_MAC_XL710 &&
12071             pf->hw.func_caps.npar_enable &&
12072             (pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE))
12073                 pf->hw.flags &= ~I40E_HW_FLAG_FW_LLDP_STOPPABLE;
12074
12075 #ifdef CONFIG_PCI_IOV
12076         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
12077                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
12078                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
12079                 pf->num_req_vfs = min_t(int,
12080                                         pf->hw.func_caps.num_vfs,
12081                                         I40E_MAX_VF_COUNT);
12082         }
12083 #endif /* CONFIG_PCI_IOV */
12084         pf->eeprom_version = 0xDEAD;
12085         pf->lan_veb = I40E_NO_VEB;
12086         pf->lan_vsi = I40E_NO_VSI;
12087
12088         /* By default FW has this off for performance reasons */
12089         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
12090
12091         /* set up queue assignment tracking */
12092         size = sizeof(struct i40e_lump_tracking)
12093                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
12094         pf->qp_pile = kzalloc(size, GFP_KERNEL);
12095         if (!pf->qp_pile) {
12096                 err = -ENOMEM;
12097                 goto sw_init_done;
12098         }
12099         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
12100         pf->qp_pile->search_hint = 0;
12101
12102         pf->tx_timeout_recovery_level = 1;
12103
12104         if (pf->hw.mac.type != I40E_MAC_X722 &&
12105             i40e_is_total_port_shutdown_enabled(pf)) {
12106                 /* Link down on close must be on when total port shutdown
12107                  * is enabled for a given port
12108                  */
12109                 pf->flags |= (I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED |
12110                               I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED);
12111                 dev_info(&pf->pdev->dev,
12112                          "total-port-shutdown was enabled, link-down-on-close is forced on\n");
12113         }
12114         mutex_init(&pf->switch_mutex);
12115
12116 sw_init_done:
12117         return err;
12118 }
12119
12120 /**
12121  * i40e_set_ntuple - set the ntuple feature flag and take action
12122  * @pf: board private structure to initialize
12123  * @features: the feature set that the stack is suggesting
12124  *
12125  * returns a bool to indicate if reset needs to happen
12126  **/
12127 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
12128 {
12129         bool need_reset = false;
12130
12131         /* Check if Flow Director n-tuple support was enabled or disabled.  If
12132          * the state changed, we need to reset.
12133          */
12134         if (features & NETIF_F_NTUPLE) {
12135                 /* Enable filters and mark for reset */
12136                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
12137                         need_reset = true;
12138                 /* enable FD_SB only if there is MSI-X vector and no cloud
12139                  * filters exist
12140                  */
12141                 if (pf->num_fdsb_msix > 0 && !pf->num_cloud_filters) {
12142                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
12143                         pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
12144                 }
12145         } else {
12146                 /* turn off filters, mark for reset and clear SW filter list */
12147                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
12148                         need_reset = true;
12149                         i40e_fdir_filter_exit(pf);
12150                 }
12151                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
12152                 clear_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state);
12153                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
12154
12155                 /* reset fd counters */
12156                 pf->fd_add_err = 0;
12157                 pf->fd_atr_cnt = 0;
12158                 /* if ATR was auto disabled it can be re-enabled. */
12159                 if (test_and_clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state))
12160                         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
12161                             (I40E_DEBUG_FD & pf->hw.debug_mask))
12162                                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
12163         }
12164         return need_reset;
12165 }
12166
12167 /**
12168  * i40e_clear_rss_lut - clear the rx hash lookup table
12169  * @vsi: the VSI being configured
12170  **/
12171 static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
12172 {
12173         struct i40e_pf *pf = vsi->back;
12174         struct i40e_hw *hw = &pf->hw;
12175         u16 vf_id = vsi->vf_id;
12176         u8 i;
12177
12178         if (vsi->type == I40E_VSI_MAIN) {
12179                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
12180                         wr32(hw, I40E_PFQF_HLUT(i), 0);
12181         } else if (vsi->type == I40E_VSI_SRIOV) {
12182                 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
12183                         i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
12184         } else {
12185                 dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
12186         }
12187 }
12188
12189 /**
12190  * i40e_set_features - set the netdev feature flags
12191  * @netdev: ptr to the netdev being adjusted
12192  * @features: the feature set that the stack is suggesting
12193  * Note: expects to be called while under rtnl_lock()
12194  **/
12195 static int i40e_set_features(struct net_device *netdev,
12196                              netdev_features_t features)
12197 {
12198         struct i40e_netdev_priv *np = netdev_priv(netdev);
12199         struct i40e_vsi *vsi = np->vsi;
12200         struct i40e_pf *pf = vsi->back;
12201         bool need_reset;
12202
12203         if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
12204                 i40e_pf_config_rss(pf);
12205         else if (!(features & NETIF_F_RXHASH) &&
12206                  netdev->features & NETIF_F_RXHASH)
12207                 i40e_clear_rss_lut(vsi);
12208
12209         if (features & NETIF_F_HW_VLAN_CTAG_RX)
12210                 i40e_vlan_stripping_enable(vsi);
12211         else
12212                 i40e_vlan_stripping_disable(vsi);
12213
12214         if (!(features & NETIF_F_HW_TC) && pf->num_cloud_filters) {
12215                 dev_err(&pf->pdev->dev,
12216                         "Offloaded tc filters active, can't turn hw_tc_offload off");
12217                 return -EINVAL;
12218         }
12219
12220         if (!(features & NETIF_F_HW_L2FW_DOFFLOAD) && vsi->macvlan_cnt)
12221                 i40e_del_all_macvlans(vsi);
12222
12223         need_reset = i40e_set_ntuple(pf, features);
12224
12225         if (need_reset)
12226                 i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
12227
12228         return 0;
12229 }
12230
12231 /**
12232  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
12233  * @pf: board private structure
12234  * @port: The UDP port to look up
12235  *
12236  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
12237  **/
12238 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, u16 port)
12239 {
12240         u8 i;
12241
12242         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
12243                 /* Do not report ports with pending deletions as
12244                  * being available.
12245                  */
12246                 if (!port && (pf->pending_udp_bitmap & BIT_ULL(i)))
12247                         continue;
12248                 if (pf->udp_ports[i].port == port)
12249                         return i;
12250         }
12251
12252         return i;
12253 }
12254
12255 /**
12256  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
12257  * @netdev: This physical port's netdev
12258  * @ti: Tunnel endpoint information
12259  **/
12260 static void i40e_udp_tunnel_add(struct net_device *netdev,
12261                                 struct udp_tunnel_info *ti)
12262 {
12263         struct i40e_netdev_priv *np = netdev_priv(netdev);
12264         struct i40e_vsi *vsi = np->vsi;
12265         struct i40e_pf *pf = vsi->back;
12266         u16 port = ntohs(ti->port);
12267         u8 next_idx;
12268         u8 idx;
12269
12270         idx = i40e_get_udp_port_idx(pf, port);
12271
12272         /* Check if port already exists */
12273         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
12274                 netdev_info(netdev, "port %d already offloaded\n", port);
12275                 return;
12276         }
12277
12278         /* Now check if there is space to add the new port */
12279         next_idx = i40e_get_udp_port_idx(pf, 0);
12280
12281         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
12282                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
12283                             port);
12284                 return;
12285         }
12286
12287         switch (ti->type) {
12288         case UDP_TUNNEL_TYPE_VXLAN:
12289                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
12290                 break;
12291         case UDP_TUNNEL_TYPE_GENEVE:
12292                 if (!(pf->hw_features & I40E_HW_GENEVE_OFFLOAD_CAPABLE))
12293                         return;
12294                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
12295                 break;
12296         default:
12297                 return;
12298         }
12299
12300         /* New port: add it and mark its index in the bitmap */
12301         pf->udp_ports[next_idx].port = port;
12302         pf->udp_ports[next_idx].filter_index = I40E_UDP_PORT_INDEX_UNUSED;
12303         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
12304         set_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state);
12305 }
12306
12307 /**
12308  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
12309  * @netdev: This physical port's netdev
12310  * @ti: Tunnel endpoint information
12311  **/
12312 static void i40e_udp_tunnel_del(struct net_device *netdev,
12313                                 struct udp_tunnel_info *ti)
12314 {
12315         struct i40e_netdev_priv *np = netdev_priv(netdev);
12316         struct i40e_vsi *vsi = np->vsi;
12317         struct i40e_pf *pf = vsi->back;
12318         u16 port = ntohs(ti->port);
12319         u8 idx;
12320
12321         idx = i40e_get_udp_port_idx(pf, port);
12322
12323         /* Check if port already exists */
12324         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
12325                 goto not_found;
12326
12327         switch (ti->type) {
12328         case UDP_TUNNEL_TYPE_VXLAN:
12329                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
12330                         goto not_found;
12331                 break;
12332         case UDP_TUNNEL_TYPE_GENEVE:
12333                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
12334                         goto not_found;
12335                 break;
12336         default:
12337                 goto not_found;
12338         }
12339
12340         /* if port exists, set it to 0 (mark for deletion)
12341          * and make it pending
12342          */
12343         pf->udp_ports[idx].port = 0;
12344
12345         /* Toggle pending bit instead of setting it. This way if we are
12346          * deleting a port that has yet to be added we just clear the pending
12347          * bit and don't have to worry about it.
12348          */
12349         pf->pending_udp_bitmap ^= BIT_ULL(idx);
12350         set_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state);
12351
12352         return;
12353 not_found:
12354         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
12355                     port);
12356 }
12357
12358 static int i40e_get_phys_port_id(struct net_device *netdev,
12359                                  struct netdev_phys_item_id *ppid)
12360 {
12361         struct i40e_netdev_priv *np = netdev_priv(netdev);
12362         struct i40e_pf *pf = np->vsi->back;
12363         struct i40e_hw *hw = &pf->hw;
12364
12365         if (!(pf->hw_features & I40E_HW_PORT_ID_VALID))
12366                 return -EOPNOTSUPP;
12367
12368         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
12369         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
12370
12371         return 0;
12372 }
12373
12374 /**
12375  * i40e_ndo_fdb_add - add an entry to the hardware database
12376  * @ndm: the input from the stack
12377  * @tb: pointer to array of nladdr (unused)
12378  * @dev: the net device pointer
12379  * @addr: the MAC address entry being added
12380  * @vid: VLAN ID
12381  * @flags: instructions from stack about fdb operation
12382  */
12383 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
12384                             struct net_device *dev,
12385                             const unsigned char *addr, u16 vid,
12386                             u16 flags,
12387                             struct netlink_ext_ack *extack)
12388 {
12389         struct i40e_netdev_priv *np = netdev_priv(dev);
12390         struct i40e_pf *pf = np->vsi->back;
12391         int err = 0;
12392
12393         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
12394                 return -EOPNOTSUPP;
12395
12396         if (vid) {
12397                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
12398                 return -EINVAL;
12399         }
12400
12401         /* Hardware does not support aging addresses so if a
12402          * ndm_state is given only allow permanent addresses
12403          */
12404         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
12405                 netdev_info(dev, "FDB only supports static addresses\n");
12406                 return -EINVAL;
12407         }
12408
12409         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
12410                 err = dev_uc_add_excl(dev, addr);
12411         else if (is_multicast_ether_addr(addr))
12412                 err = dev_mc_add_excl(dev, addr);
12413         else
12414                 err = -EINVAL;
12415
12416         /* Only return duplicate errors if NLM_F_EXCL is set */
12417         if (err == -EEXIST && !(flags & NLM_F_EXCL))
12418                 err = 0;
12419
12420         return err;
12421 }
12422
12423 /**
12424  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
12425  * @dev: the netdev being configured
12426  * @nlh: RTNL message
12427  * @flags: bridge flags
12428  * @extack: netlink extended ack
12429  *
12430  * Inserts a new hardware bridge if not already created and
12431  * enables the bridging mode requested (VEB or VEPA). If the
12432  * hardware bridge has already been inserted and the request
12433  * is to change the mode then that requires a PF reset to
12434  * allow rebuild of the components with required hardware
12435  * bridge mode enabled.
12436  *
12437  * Note: expects to be called while under rtnl_lock()
12438  **/
12439 static int i40e_ndo_bridge_setlink(struct net_device *dev,
12440                                    struct nlmsghdr *nlh,
12441                                    u16 flags,
12442                                    struct netlink_ext_ack *extack)
12443 {
12444         struct i40e_netdev_priv *np = netdev_priv(dev);
12445         struct i40e_vsi *vsi = np->vsi;
12446         struct i40e_pf *pf = vsi->back;
12447         struct i40e_veb *veb = NULL;
12448         struct nlattr *attr, *br_spec;
12449         int i, rem;
12450
12451         /* Only for PF VSI for now */
12452         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
12453                 return -EOPNOTSUPP;
12454
12455         /* Find the HW bridge for PF VSI */
12456         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
12457                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
12458                         veb = pf->veb[i];
12459         }
12460
12461         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
12462
12463         nla_for_each_nested(attr, br_spec, rem) {
12464                 __u16 mode;
12465
12466                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
12467                         continue;
12468
12469                 mode = nla_get_u16(attr);
12470                 if ((mode != BRIDGE_MODE_VEPA) &&
12471                     (mode != BRIDGE_MODE_VEB))
12472                         return -EINVAL;
12473
12474                 /* Insert a new HW bridge */
12475                 if (!veb) {
12476                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
12477                                              vsi->tc_config.enabled_tc);
12478                         if (veb) {
12479                                 veb->bridge_mode = mode;
12480                                 i40e_config_bridge_mode(veb);
12481                         } else {
12482                                 /* No Bridge HW offload available */
12483                                 return -ENOENT;
12484                         }
12485                         break;
12486                 } else if (mode != veb->bridge_mode) {
12487                         /* Existing HW bridge but different mode needs reset */
12488                         veb->bridge_mode = mode;
12489                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
12490                         if (mode == BRIDGE_MODE_VEB)
12491                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
12492                         else
12493                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
12494                         i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
12495                         break;
12496                 }
12497         }
12498
12499         return 0;
12500 }
12501
12502 /**
12503  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
12504  * @skb: skb buff
12505  * @pid: process id
12506  * @seq: RTNL message seq #
12507  * @dev: the netdev being configured
12508  * @filter_mask: unused
12509  * @nlflags: netlink flags passed in
12510  *
12511  * Return the mode in which the hardware bridge is operating in
12512  * i.e VEB or VEPA.
12513  **/
12514 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
12515                                    struct net_device *dev,
12516                                    u32 __always_unused filter_mask,
12517                                    int nlflags)
12518 {
12519         struct i40e_netdev_priv *np = netdev_priv(dev);
12520         struct i40e_vsi *vsi = np->vsi;
12521         struct i40e_pf *pf = vsi->back;
12522         struct i40e_veb *veb = NULL;
12523         int i;
12524
12525         /* Only for PF VSI for now */
12526         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
12527                 return -EOPNOTSUPP;
12528
12529         /* Find the HW bridge for the PF VSI */
12530         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
12531                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
12532                         veb = pf->veb[i];
12533         }
12534
12535         if (!veb)
12536                 return 0;
12537
12538         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
12539                                        0, 0, nlflags, filter_mask, NULL);
12540 }
12541
12542 /**
12543  * i40e_features_check - Validate encapsulated packet conforms to limits
12544  * @skb: skb buff
12545  * @dev: This physical port's netdev
12546  * @features: Offload features that the stack believes apply
12547  **/
12548 static netdev_features_t i40e_features_check(struct sk_buff *skb,
12549                                              struct net_device *dev,
12550                                              netdev_features_t features)
12551 {
12552         size_t len;
12553
12554         /* No point in doing any of this if neither checksum nor GSO are
12555          * being requested for this frame.  We can rule out both by just
12556          * checking for CHECKSUM_PARTIAL
12557          */
12558         if (skb->ip_summed != CHECKSUM_PARTIAL)
12559                 return features;
12560
12561         /* We cannot support GSO if the MSS is going to be less than
12562          * 64 bytes.  If it is then we need to drop support for GSO.
12563          */
12564         if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
12565                 features &= ~NETIF_F_GSO_MASK;
12566
12567         /* MACLEN can support at most 63 words */
12568         len = skb_network_header(skb) - skb->data;
12569         if (len & ~(63 * 2))
12570                 goto out_err;
12571
12572         /* IPLEN and EIPLEN can support at most 127 dwords */
12573         len = skb_transport_header(skb) - skb_network_header(skb);
12574         if (len & ~(127 * 4))
12575                 goto out_err;
12576
12577         if (skb->encapsulation) {
12578                 /* L4TUNLEN can support 127 words */
12579                 len = skb_inner_network_header(skb) - skb_transport_header(skb);
12580                 if (len & ~(127 * 2))
12581                         goto out_err;
12582
12583                 /* IPLEN can support at most 127 dwords */
12584                 len = skb_inner_transport_header(skb) -
12585                       skb_inner_network_header(skb);
12586                 if (len & ~(127 * 4))
12587                         goto out_err;
12588         }
12589
12590         /* No need to validate L4LEN as TCP is the only protocol with a
12591          * a flexible value and we support all possible values supported
12592          * by TCP, which is at most 15 dwords
12593          */
12594
12595         return features;
12596 out_err:
12597         return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
12598 }
12599
12600 /**
12601  * i40e_xdp_setup - add/remove an XDP program
12602  * @vsi: VSI to changed
12603  * @prog: XDP program
12604  **/
12605 static int i40e_xdp_setup(struct i40e_vsi *vsi,
12606                           struct bpf_prog *prog)
12607 {
12608         int frame_size = vsi->netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
12609         struct i40e_pf *pf = vsi->back;
12610         struct bpf_prog *old_prog;
12611         bool need_reset;
12612         int i;
12613
12614         /* Don't allow frames that span over multiple buffers */
12615         if (frame_size > vsi->rx_buf_len)
12616                 return -EINVAL;
12617
12618         if (!i40e_enabled_xdp_vsi(vsi) && !prog)
12619                 return 0;
12620
12621         /* When turning XDP on->off/off->on we reset and rebuild the rings. */
12622         need_reset = (i40e_enabled_xdp_vsi(vsi) != !!prog);
12623
12624         if (need_reset)
12625                 i40e_prep_for_reset(pf, true);
12626
12627         old_prog = xchg(&vsi->xdp_prog, prog);
12628
12629         if (need_reset) {
12630                 if (!prog)
12631                         /* Wait until ndo_xsk_wakeup completes. */
12632                         synchronize_rcu();
12633                 i40e_reset_and_rebuild(pf, true, true);
12634         }
12635
12636         for (i = 0; i < vsi->num_queue_pairs; i++)
12637                 WRITE_ONCE(vsi->rx_rings[i]->xdp_prog, vsi->xdp_prog);
12638
12639         if (old_prog)
12640                 bpf_prog_put(old_prog);
12641
12642         /* Kick start the NAPI context if there is an AF_XDP socket open
12643          * on that queue id. This so that receiving will start.
12644          */
12645         if (need_reset && prog)
12646                 for (i = 0; i < vsi->num_queue_pairs; i++)
12647                         if (vsi->xdp_rings[i]->xsk_umem)
12648                                 (void)i40e_xsk_wakeup(vsi->netdev, i,
12649                                                       XDP_WAKEUP_RX);
12650
12651         return 0;
12652 }
12653
12654 /**
12655  * i40e_enter_busy_conf - Enters busy config state
12656  * @vsi: vsi
12657  *
12658  * Returns 0 on success, <0 for failure.
12659  **/
12660 static int i40e_enter_busy_conf(struct i40e_vsi *vsi)
12661 {
12662         struct i40e_pf *pf = vsi->back;
12663         int timeout = 50;
12664
12665         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
12666                 timeout--;
12667                 if (!timeout)
12668                         return -EBUSY;
12669                 usleep_range(1000, 2000);
12670         }
12671
12672         return 0;
12673 }
12674
12675 /**
12676  * i40e_exit_busy_conf - Exits busy config state
12677  * @vsi: vsi
12678  **/
12679 static void i40e_exit_busy_conf(struct i40e_vsi *vsi)
12680 {
12681         struct i40e_pf *pf = vsi->back;
12682
12683         clear_bit(__I40E_CONFIG_BUSY, pf->state);
12684 }
12685
12686 /**
12687  * i40e_queue_pair_reset_stats - Resets all statistics for a queue pair
12688  * @vsi: vsi
12689  * @queue_pair: queue pair
12690  **/
12691 static void i40e_queue_pair_reset_stats(struct i40e_vsi *vsi, int queue_pair)
12692 {
12693         memset(&vsi->rx_rings[queue_pair]->rx_stats, 0,
12694                sizeof(vsi->rx_rings[queue_pair]->rx_stats));
12695         memset(&vsi->tx_rings[queue_pair]->stats, 0,
12696                sizeof(vsi->tx_rings[queue_pair]->stats));
12697         if (i40e_enabled_xdp_vsi(vsi)) {
12698                 memset(&vsi->xdp_rings[queue_pair]->stats, 0,
12699                        sizeof(vsi->xdp_rings[queue_pair]->stats));
12700         }
12701 }
12702
12703 /**
12704  * i40e_queue_pair_clean_rings - Cleans all the rings of a queue pair
12705  * @vsi: vsi
12706  * @queue_pair: queue pair
12707  **/
12708 static void i40e_queue_pair_clean_rings(struct i40e_vsi *vsi, int queue_pair)
12709 {
12710         i40e_clean_tx_ring(vsi->tx_rings[queue_pair]);
12711         if (i40e_enabled_xdp_vsi(vsi)) {
12712                 /* Make sure that in-progress ndo_xdp_xmit calls are
12713                  * completed.
12714                  */
12715                 synchronize_rcu();
12716                 i40e_clean_tx_ring(vsi->xdp_rings[queue_pair]);
12717         }
12718         i40e_clean_rx_ring(vsi->rx_rings[queue_pair]);
12719 }
12720
12721 /**
12722  * i40e_queue_pair_toggle_napi - Enables/disables NAPI for a queue pair
12723  * @vsi: vsi
12724  * @queue_pair: queue pair
12725  * @enable: true for enable, false for disable
12726  **/
12727 static void i40e_queue_pair_toggle_napi(struct i40e_vsi *vsi, int queue_pair,
12728                                         bool enable)
12729 {
12730         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
12731         struct i40e_q_vector *q_vector = rxr->q_vector;
12732
12733         if (!vsi->netdev)
12734                 return;
12735
12736         /* All rings in a qp belong to the same qvector. */
12737         if (q_vector->rx.ring || q_vector->tx.ring) {
12738                 if (enable)
12739                         napi_enable(&q_vector->napi);
12740                 else
12741                         napi_disable(&q_vector->napi);
12742         }
12743 }
12744
12745 /**
12746  * i40e_queue_pair_toggle_rings - Enables/disables all rings for a queue pair
12747  * @vsi: vsi
12748  * @queue_pair: queue pair
12749  * @enable: true for enable, false for disable
12750  *
12751  * Returns 0 on success, <0 on failure.
12752  **/
12753 static int i40e_queue_pair_toggle_rings(struct i40e_vsi *vsi, int queue_pair,
12754                                         bool enable)
12755 {
12756         struct i40e_pf *pf = vsi->back;
12757         int pf_q, ret = 0;
12758
12759         pf_q = vsi->base_queue + queue_pair;
12760         ret = i40e_control_wait_tx_q(vsi->seid, pf, pf_q,
12761                                      false /*is xdp*/, enable);
12762         if (ret) {
12763                 dev_info(&pf->pdev->dev,
12764                          "VSI seid %d Tx ring %d %sable timeout\n",
12765                          vsi->seid, pf_q, (enable ? "en" : "dis"));
12766                 return ret;
12767         }
12768
12769         i40e_control_rx_q(pf, pf_q, enable);
12770         ret = i40e_pf_rxq_wait(pf, pf_q, enable);
12771         if (ret) {
12772                 dev_info(&pf->pdev->dev,
12773                          "VSI seid %d Rx ring %d %sable timeout\n",
12774                          vsi->seid, pf_q, (enable ? "en" : "dis"));
12775                 return ret;
12776         }
12777
12778         /* Due to HW errata, on Rx disable only, the register can
12779          * indicate done before it really is. Needs 50ms to be sure
12780          */
12781         if (!enable)
12782                 mdelay(50);
12783
12784         if (!i40e_enabled_xdp_vsi(vsi))
12785                 return ret;
12786
12787         ret = i40e_control_wait_tx_q(vsi->seid, pf,
12788                                      pf_q + vsi->alloc_queue_pairs,
12789                                      true /*is xdp*/, enable);
12790         if (ret) {
12791                 dev_info(&pf->pdev->dev,
12792                          "VSI seid %d XDP Tx ring %d %sable timeout\n",
12793                          vsi->seid, pf_q, (enable ? "en" : "dis"));
12794         }
12795
12796         return ret;
12797 }
12798
12799 /**
12800  * i40e_queue_pair_enable_irq - Enables interrupts for a queue pair
12801  * @vsi: vsi
12802  * @queue_pair: queue_pair
12803  **/
12804 static void i40e_queue_pair_enable_irq(struct i40e_vsi *vsi, int queue_pair)
12805 {
12806         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
12807         struct i40e_pf *pf = vsi->back;
12808         struct i40e_hw *hw = &pf->hw;
12809
12810         /* All rings in a qp belong to the same qvector. */
12811         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
12812                 i40e_irq_dynamic_enable(vsi, rxr->q_vector->v_idx);
12813         else
12814                 i40e_irq_dynamic_enable_icr0(pf);
12815
12816         i40e_flush(hw);
12817 }
12818
12819 /**
12820  * i40e_queue_pair_disable_irq - Disables interrupts for a queue pair
12821  * @vsi: vsi
12822  * @queue_pair: queue_pair
12823  **/
12824 static void i40e_queue_pair_disable_irq(struct i40e_vsi *vsi, int queue_pair)
12825 {
12826         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
12827         struct i40e_pf *pf = vsi->back;
12828         struct i40e_hw *hw = &pf->hw;
12829
12830         /* For simplicity, instead of removing the qp interrupt causes
12831          * from the interrupt linked list, we simply disable the interrupt, and
12832          * leave the list intact.
12833          *
12834          * All rings in a qp belong to the same qvector.
12835          */
12836         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
12837                 u32 intpf = vsi->base_vector + rxr->q_vector->v_idx;
12838
12839                 wr32(hw, I40E_PFINT_DYN_CTLN(intpf - 1), 0);
12840                 i40e_flush(hw);
12841                 synchronize_irq(pf->msix_entries[intpf].vector);
12842         } else {
12843                 /* Legacy and MSI mode - this stops all interrupt handling */
12844                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
12845                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
12846                 i40e_flush(hw);
12847                 synchronize_irq(pf->pdev->irq);
12848         }
12849 }
12850
12851 /**
12852  * i40e_queue_pair_disable - Disables a queue pair
12853  * @vsi: vsi
12854  * @queue_pair: queue pair
12855  *
12856  * Returns 0 on success, <0 on failure.
12857  **/
12858 int i40e_queue_pair_disable(struct i40e_vsi *vsi, int queue_pair)
12859 {
12860         int err;
12861
12862         err = i40e_enter_busy_conf(vsi);
12863         if (err)
12864                 return err;
12865
12866         i40e_queue_pair_disable_irq(vsi, queue_pair);
12867         err = i40e_queue_pair_toggle_rings(vsi, queue_pair, false /* off */);
12868         i40e_queue_pair_toggle_napi(vsi, queue_pair, false /* off */);
12869         i40e_queue_pair_clean_rings(vsi, queue_pair);
12870         i40e_queue_pair_reset_stats(vsi, queue_pair);
12871
12872         return err;
12873 }
12874
12875 /**
12876  * i40e_queue_pair_enable - Enables a queue pair
12877  * @vsi: vsi
12878  * @queue_pair: queue pair
12879  *
12880  * Returns 0 on success, <0 on failure.
12881  **/
12882 int i40e_queue_pair_enable(struct i40e_vsi *vsi, int queue_pair)
12883 {
12884         int err;
12885
12886         err = i40e_configure_tx_ring(vsi->tx_rings[queue_pair]);
12887         if (err)
12888                 return err;
12889
12890         if (i40e_enabled_xdp_vsi(vsi)) {
12891                 err = i40e_configure_tx_ring(vsi->xdp_rings[queue_pair]);
12892                 if (err)
12893                         return err;
12894         }
12895
12896         err = i40e_configure_rx_ring(vsi->rx_rings[queue_pair]);
12897         if (err)
12898                 return err;
12899
12900         err = i40e_queue_pair_toggle_rings(vsi, queue_pair, true /* on */);
12901         i40e_queue_pair_toggle_napi(vsi, queue_pair, true /* on */);
12902         i40e_queue_pair_enable_irq(vsi, queue_pair);
12903
12904         i40e_exit_busy_conf(vsi);
12905
12906         return err;
12907 }
12908
12909 /**
12910  * i40e_xdp - implements ndo_bpf for i40e
12911  * @dev: netdevice
12912  * @xdp: XDP command
12913  **/
12914 static int i40e_xdp(struct net_device *dev,
12915                     struct netdev_bpf *xdp)
12916 {
12917         struct i40e_netdev_priv *np = netdev_priv(dev);
12918         struct i40e_vsi *vsi = np->vsi;
12919
12920         if (vsi->type != I40E_VSI_MAIN)
12921                 return -EINVAL;
12922
12923         switch (xdp->command) {
12924         case XDP_SETUP_PROG:
12925                 return i40e_xdp_setup(vsi, xdp->prog);
12926         case XDP_SETUP_XSK_UMEM:
12927                 return i40e_xsk_umem_setup(vsi, xdp->xsk.umem,
12928                                            xdp->xsk.queue_id);
12929         default:
12930                 return -EINVAL;
12931         }
12932 }
12933
12934 static const struct net_device_ops i40e_netdev_ops = {
12935         .ndo_open               = i40e_open,
12936         .ndo_stop               = i40e_close,
12937         .ndo_start_xmit         = i40e_lan_xmit_frame,
12938         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
12939         .ndo_set_rx_mode        = i40e_set_rx_mode,
12940         .ndo_validate_addr      = eth_validate_addr,
12941         .ndo_set_mac_address    = i40e_set_mac,
12942         .ndo_change_mtu         = i40e_change_mtu,
12943         .ndo_do_ioctl           = i40e_ioctl,
12944         .ndo_tx_timeout         = i40e_tx_timeout,
12945         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
12946         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
12947 #ifdef CONFIG_NET_POLL_CONTROLLER
12948         .ndo_poll_controller    = i40e_netpoll,
12949 #endif
12950         .ndo_setup_tc           = __i40e_setup_tc,
12951         .ndo_set_features       = i40e_set_features,
12952         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
12953         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
12954         .ndo_get_vf_stats       = i40e_get_vf_stats,
12955         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
12956         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
12957         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
12958         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
12959         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
12960         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
12961         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
12962         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
12963         .ndo_fdb_add            = i40e_ndo_fdb_add,
12964         .ndo_features_check     = i40e_features_check,
12965         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
12966         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
12967         .ndo_bpf                = i40e_xdp,
12968         .ndo_xdp_xmit           = i40e_xdp_xmit,
12969         .ndo_xsk_wakeup         = i40e_xsk_wakeup,
12970         .ndo_dfwd_add_station   = i40e_fwd_add,
12971         .ndo_dfwd_del_station   = i40e_fwd_del,
12972 };
12973
12974 /**
12975  * i40e_config_netdev - Setup the netdev flags
12976  * @vsi: the VSI being configured
12977  *
12978  * Returns 0 on success, negative value on failure
12979  **/
12980 static int i40e_config_netdev(struct i40e_vsi *vsi)
12981 {
12982         struct i40e_pf *pf = vsi->back;
12983         struct i40e_hw *hw = &pf->hw;
12984         struct i40e_netdev_priv *np;
12985         struct net_device *netdev;
12986         u8 broadcast[ETH_ALEN];
12987         u8 mac_addr[ETH_ALEN];
12988         int etherdev_size;
12989         netdev_features_t hw_enc_features;
12990         netdev_features_t hw_features;
12991
12992         etherdev_size = sizeof(struct i40e_netdev_priv);
12993         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
12994         if (!netdev)
12995                 return -ENOMEM;
12996
12997         vsi->netdev = netdev;
12998         np = netdev_priv(netdev);
12999         np->vsi = vsi;
13000
13001         hw_enc_features = NETIF_F_SG                    |
13002                           NETIF_F_IP_CSUM               |
13003                           NETIF_F_IPV6_CSUM             |
13004                           NETIF_F_HIGHDMA               |
13005                           NETIF_F_SOFT_FEATURES         |
13006                           NETIF_F_TSO                   |
13007                           NETIF_F_TSO_ECN               |
13008                           NETIF_F_TSO6                  |
13009                           NETIF_F_GSO_GRE               |
13010                           NETIF_F_GSO_GRE_CSUM          |
13011                           NETIF_F_GSO_PARTIAL           |
13012                           NETIF_F_GSO_IPXIP4            |
13013                           NETIF_F_GSO_IPXIP6            |
13014                           NETIF_F_GSO_UDP_TUNNEL        |
13015                           NETIF_F_GSO_UDP_TUNNEL_CSUM   |
13016                           NETIF_F_GSO_UDP_L4            |
13017                           NETIF_F_SCTP_CRC              |
13018                           NETIF_F_RXHASH                |
13019                           NETIF_F_RXCSUM                |
13020                           0;
13021
13022         if (!(pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE))
13023                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
13024
13025         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
13026
13027         netdev->hw_enc_features |= hw_enc_features;
13028
13029         /* record features VLANs can make use of */
13030         netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID;
13031
13032         /* enable macvlan offloads */
13033         netdev->hw_features |= NETIF_F_HW_L2FW_DOFFLOAD;
13034
13035         hw_features = hw_enc_features           |
13036                       NETIF_F_HW_VLAN_CTAG_TX   |
13037                       NETIF_F_HW_VLAN_CTAG_RX;
13038
13039         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
13040                 hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
13041
13042         netdev->hw_features |= hw_features;
13043
13044         netdev->features |= hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
13045         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
13046
13047         if (vsi->type == I40E_VSI_MAIN) {
13048                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
13049                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
13050                 /* The following steps are necessary for two reasons. First,
13051                  * some older NVM configurations load a default MAC-VLAN
13052                  * filter that will accept any tagged packet, and we want to
13053                  * replace this with a normal filter. Additionally, it is
13054                  * possible our MAC address was provided by the platform using
13055                  * Open Firmware or similar.
13056                  *
13057                  * Thus, we need to remove the default filter and install one
13058                  * specific to the MAC address.
13059                  */
13060                 i40e_rm_default_mac_filter(vsi, mac_addr);
13061                 spin_lock_bh(&vsi->mac_filter_hash_lock);
13062                 i40e_add_mac_filter(vsi, mac_addr);
13063                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
13064         } else {
13065                 /* Relate the VSI_VMDQ name to the VSI_MAIN name. Note that we
13066                  * are still limited by IFNAMSIZ, but we're adding 'v%d\0' to
13067                  * the end, which is 4 bytes long, so force truncation of the
13068                  * original name by IFNAMSIZ - 4
13069                  */
13070                 snprintf(netdev->name, IFNAMSIZ, "%.*sv%%d",
13071                          IFNAMSIZ - 4,
13072                          pf->vsi[pf->lan_vsi]->netdev->name);
13073                 eth_random_addr(mac_addr);
13074
13075                 spin_lock_bh(&vsi->mac_filter_hash_lock);
13076                 i40e_add_mac_filter(vsi, mac_addr);
13077                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
13078         }
13079
13080         /* Add the broadcast filter so that we initially will receive
13081          * broadcast packets. Note that when a new VLAN is first added the
13082          * driver will convert all filters marked I40E_VLAN_ANY into VLAN
13083          * specific filters as part of transitioning into "vlan" operation.
13084          * When more VLANs are added, the driver will copy each existing MAC
13085          * filter and add it for the new VLAN.
13086          *
13087          * Broadcast filters are handled specially by
13088          * i40e_sync_filters_subtask, as the driver must to set the broadcast
13089          * promiscuous bit instead of adding this directly as a MAC/VLAN
13090          * filter. The subtask will update the correct broadcast promiscuous
13091          * bits as VLANs become active or inactive.
13092          */
13093         eth_broadcast_addr(broadcast);
13094         spin_lock_bh(&vsi->mac_filter_hash_lock);
13095         i40e_add_mac_filter(vsi, broadcast);
13096         spin_unlock_bh(&vsi->mac_filter_hash_lock);
13097
13098         ether_addr_copy(netdev->dev_addr, mac_addr);
13099         ether_addr_copy(netdev->perm_addr, mac_addr);
13100
13101         /* i40iw_net_event() reads 16 bytes from neigh->primary_key */
13102         netdev->neigh_priv_len = sizeof(u32) * 4;
13103
13104         netdev->priv_flags |= IFF_UNICAST_FLT;
13105         netdev->priv_flags |= IFF_SUPP_NOFCS;
13106         /* Setup netdev TC information */
13107         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
13108
13109         netdev->netdev_ops = &i40e_netdev_ops;
13110         netdev->watchdog_timeo = 5 * HZ;
13111         i40e_set_ethtool_ops(netdev);
13112
13113         /* MTU range: 68 - 9706 */
13114         netdev->min_mtu = ETH_MIN_MTU;
13115         netdev->max_mtu = I40E_MAX_RXBUFFER - I40E_PACKET_HDR_PAD;
13116
13117         return 0;
13118 }
13119
13120 /**
13121  * i40e_vsi_delete - Delete a VSI from the switch
13122  * @vsi: the VSI being removed
13123  *
13124  * Returns 0 on success, negative value on failure
13125  **/
13126 static void i40e_vsi_delete(struct i40e_vsi *vsi)
13127 {
13128         /* remove default VSI is not allowed */
13129         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
13130                 return;
13131
13132         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
13133 }
13134
13135 /**
13136  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
13137  * @vsi: the VSI being queried
13138  *
13139  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
13140  **/
13141 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
13142 {
13143         struct i40e_veb *veb;
13144         struct i40e_pf *pf = vsi->back;
13145
13146         /* Uplink is not a bridge so default to VEB */
13147         if (vsi->veb_idx >= I40E_MAX_VEB)
13148                 return 1;
13149
13150         veb = pf->veb[vsi->veb_idx];
13151         if (!veb) {
13152                 dev_info(&pf->pdev->dev,
13153                          "There is no veb associated with the bridge\n");
13154                 return -ENOENT;
13155         }
13156
13157         /* Uplink is a bridge in VEPA mode */
13158         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
13159                 return 0;
13160         } else {
13161                 /* Uplink is a bridge in VEB mode */
13162                 return 1;
13163         }
13164
13165         /* VEPA is now default bridge, so return 0 */
13166         return 0;
13167 }
13168
13169 /**
13170  * i40e_add_vsi - Add a VSI to the switch
13171  * @vsi: the VSI being configured
13172  *
13173  * This initializes a VSI context depending on the VSI type to be added and
13174  * passes it down to the add_vsi aq command.
13175  **/
13176 static int i40e_add_vsi(struct i40e_vsi *vsi)
13177 {
13178         int ret = -ENODEV;
13179         struct i40e_pf *pf = vsi->back;
13180         struct i40e_hw *hw = &pf->hw;
13181         struct i40e_vsi_context ctxt;
13182         struct i40e_mac_filter *f;
13183         struct hlist_node *h;
13184         int bkt;
13185
13186         u8 enabled_tc = 0x1; /* TC0 enabled */
13187         int f_count = 0;
13188
13189         memset(&ctxt, 0, sizeof(ctxt));
13190         switch (vsi->type) {
13191         case I40E_VSI_MAIN:
13192                 /* The PF's main VSI is already setup as part of the
13193                  * device initialization, so we'll not bother with
13194                  * the add_vsi call, but we will retrieve the current
13195                  * VSI context.
13196                  */
13197                 ctxt.seid = pf->main_vsi_seid;
13198                 ctxt.pf_num = pf->hw.pf_id;
13199                 ctxt.vf_num = 0;
13200                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
13201                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
13202                 if (ret) {
13203                         dev_info(&pf->pdev->dev,
13204                                  "couldn't get PF vsi config, err %s aq_err %s\n",
13205                                  i40e_stat_str(&pf->hw, ret),
13206                                  i40e_aq_str(&pf->hw,
13207                                              pf->hw.aq.asq_last_status));
13208                         return -ENOENT;
13209                 }
13210                 vsi->info = ctxt.info;
13211                 vsi->info.valid_sections = 0;
13212
13213                 vsi->seid = ctxt.seid;
13214                 vsi->id = ctxt.vsi_number;
13215
13216                 enabled_tc = i40e_pf_get_tc_map(pf);
13217
13218                 /* Source pruning is enabled by default, so the flag is
13219                  * negative logic - if it's set, we need to fiddle with
13220                  * the VSI to disable source pruning.
13221                  */
13222                 if (pf->flags & I40E_FLAG_SOURCE_PRUNING_DISABLED) {
13223                         memset(&ctxt, 0, sizeof(ctxt));
13224                         ctxt.seid = pf->main_vsi_seid;
13225                         ctxt.pf_num = pf->hw.pf_id;
13226                         ctxt.vf_num = 0;
13227                         ctxt.info.valid_sections |=
13228                                      cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13229                         ctxt.info.switch_id =
13230                                    cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
13231                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
13232                         if (ret) {
13233                                 dev_info(&pf->pdev->dev,
13234                                          "update vsi failed, err %s aq_err %s\n",
13235                                          i40e_stat_str(&pf->hw, ret),
13236                                          i40e_aq_str(&pf->hw,
13237                                                      pf->hw.aq.asq_last_status));
13238                                 ret = -ENOENT;
13239                                 goto err;
13240                         }
13241                 }
13242
13243                 /* MFP mode setup queue map and update VSI */
13244                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
13245                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
13246                         memset(&ctxt, 0, sizeof(ctxt));
13247                         ctxt.seid = pf->main_vsi_seid;
13248                         ctxt.pf_num = pf->hw.pf_id;
13249                         ctxt.vf_num = 0;
13250                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
13251                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
13252                         if (ret) {
13253                                 dev_info(&pf->pdev->dev,
13254                                          "update vsi failed, err %s aq_err %s\n",
13255                                          i40e_stat_str(&pf->hw, ret),
13256                                          i40e_aq_str(&pf->hw,
13257                                                     pf->hw.aq.asq_last_status));
13258                                 ret = -ENOENT;
13259                                 goto err;
13260                         }
13261                         /* update the local VSI info queue map */
13262                         i40e_vsi_update_queue_map(vsi, &ctxt);
13263                         vsi->info.valid_sections = 0;
13264                 } else {
13265                         /* Default/Main VSI is only enabled for TC0
13266                          * reconfigure it to enable all TCs that are
13267                          * available on the port in SFP mode.
13268                          * For MFP case the iSCSI PF would use this
13269                          * flow to enable LAN+iSCSI TC.
13270                          */
13271                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
13272                         if (ret) {
13273                                 /* Single TC condition is not fatal,
13274                                  * message and continue
13275                                  */
13276                                 dev_info(&pf->pdev->dev,
13277                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
13278                                          enabled_tc,
13279                                          i40e_stat_str(&pf->hw, ret),
13280                                          i40e_aq_str(&pf->hw,
13281                                                     pf->hw.aq.asq_last_status));
13282                         }
13283                 }
13284                 break;
13285
13286         case I40E_VSI_FDIR:
13287                 ctxt.pf_num = hw->pf_id;
13288                 ctxt.vf_num = 0;
13289                 ctxt.uplink_seid = vsi->uplink_seid;
13290                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
13291                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
13292                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
13293                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
13294                         ctxt.info.valid_sections |=
13295                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13296                         ctxt.info.switch_id =
13297                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
13298                 }
13299                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
13300                 break;
13301
13302         case I40E_VSI_VMDQ2:
13303                 ctxt.pf_num = hw->pf_id;
13304                 ctxt.vf_num = 0;
13305                 ctxt.uplink_seid = vsi->uplink_seid;
13306                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
13307                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
13308
13309                 /* This VSI is connected to VEB so the switch_id
13310                  * should be set to zero by default.
13311                  */
13312                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
13313                         ctxt.info.valid_sections |=
13314                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13315                         ctxt.info.switch_id =
13316                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
13317                 }
13318
13319                 /* Setup the VSI tx/rx queue map for TC0 only for now */
13320                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
13321                 break;
13322
13323         case I40E_VSI_SRIOV:
13324                 ctxt.pf_num = hw->pf_id;
13325                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
13326                 ctxt.uplink_seid = vsi->uplink_seid;
13327                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
13328                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
13329
13330                 /* This VSI is connected to VEB so the switch_id
13331                  * should be set to zero by default.
13332                  */
13333                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
13334                         ctxt.info.valid_sections |=
13335                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13336                         ctxt.info.switch_id =
13337                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
13338                 }
13339
13340                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
13341                         ctxt.info.valid_sections |=
13342                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
13343                         ctxt.info.queueing_opt_flags |=
13344                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
13345                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
13346                 }
13347
13348                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
13349                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
13350                 if (pf->vf[vsi->vf_id].spoofchk) {
13351                         ctxt.info.valid_sections |=
13352                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
13353                         ctxt.info.sec_flags |=
13354                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
13355                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
13356                 }
13357                 /* Setup the VSI tx/rx queue map for TC0 only for now */
13358                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
13359                 break;
13360
13361         case I40E_VSI_IWARP:
13362                 /* send down message to iWARP */
13363                 break;
13364
13365         default:
13366                 return -ENODEV;
13367         }
13368
13369         if (vsi->type != I40E_VSI_MAIN) {
13370                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
13371                 if (ret) {
13372                         dev_info(&vsi->back->pdev->dev,
13373                                  "add vsi failed, err %s aq_err %s\n",
13374                                  i40e_stat_str(&pf->hw, ret),
13375                                  i40e_aq_str(&pf->hw,
13376                                              pf->hw.aq.asq_last_status));
13377                         ret = -ENOENT;
13378                         goto err;
13379                 }
13380                 vsi->info = ctxt.info;
13381                 vsi->info.valid_sections = 0;
13382                 vsi->seid = ctxt.seid;
13383                 vsi->id = ctxt.vsi_number;
13384         }
13385
13386         vsi->active_filters = 0;
13387         clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
13388         spin_lock_bh(&vsi->mac_filter_hash_lock);
13389         /* If macvlan filters already exist, force them to get loaded */
13390         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
13391                 f->state = I40E_FILTER_NEW;
13392                 f_count++;
13393         }
13394         spin_unlock_bh(&vsi->mac_filter_hash_lock);
13395
13396         if (f_count) {
13397                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
13398                 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
13399         }
13400
13401         /* Update VSI BW information */
13402         ret = i40e_vsi_get_bw_info(vsi);
13403         if (ret) {
13404                 dev_info(&pf->pdev->dev,
13405                          "couldn't get vsi bw info, err %s aq_err %s\n",
13406                          i40e_stat_str(&pf->hw, ret),
13407                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
13408                 /* VSI is already added so not tearing that up */
13409                 ret = 0;
13410         }
13411
13412 err:
13413         return ret;
13414 }
13415
13416 /**
13417  * i40e_vsi_release - Delete a VSI and free its resources
13418  * @vsi: the VSI being removed
13419  *
13420  * Returns 0 on success or < 0 on error
13421  **/
13422 int i40e_vsi_release(struct i40e_vsi *vsi)
13423 {
13424         struct i40e_mac_filter *f;
13425         struct hlist_node *h;
13426         struct i40e_veb *veb = NULL;
13427         struct i40e_pf *pf;
13428         u16 uplink_seid;
13429         int i, n, bkt;
13430
13431         pf = vsi->back;
13432
13433         /* release of a VEB-owner or last VSI is not allowed */
13434         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
13435                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
13436                          vsi->seid, vsi->uplink_seid);
13437                 return -ENODEV;
13438         }
13439         if (vsi == pf->vsi[pf->lan_vsi] &&
13440             !test_bit(__I40E_DOWN, pf->state)) {
13441                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
13442                 return -ENODEV;
13443         }
13444
13445         uplink_seid = vsi->uplink_seid;
13446         if (vsi->type != I40E_VSI_SRIOV) {
13447                 if (vsi->netdev_registered) {
13448                         vsi->netdev_registered = false;
13449                         if (vsi->netdev) {
13450                                 /* results in a call to i40e_close() */
13451                                 unregister_netdev(vsi->netdev);
13452                         }
13453                 } else {
13454                         i40e_vsi_close(vsi);
13455                 }
13456                 i40e_vsi_disable_irq(vsi);
13457         }
13458
13459         spin_lock_bh(&vsi->mac_filter_hash_lock);
13460
13461         /* clear the sync flag on all filters */
13462         if (vsi->netdev) {
13463                 __dev_uc_unsync(vsi->netdev, NULL);
13464                 __dev_mc_unsync(vsi->netdev, NULL);
13465         }
13466
13467         /* make sure any remaining filters are marked for deletion */
13468         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
13469                 __i40e_del_filter(vsi, f);
13470
13471         spin_unlock_bh(&vsi->mac_filter_hash_lock);
13472
13473         i40e_sync_vsi_filters(vsi);
13474
13475         i40e_vsi_delete(vsi);
13476         i40e_vsi_free_q_vectors(vsi);
13477         if (vsi->netdev) {
13478                 free_netdev(vsi->netdev);
13479                 vsi->netdev = NULL;
13480         }
13481         i40e_vsi_clear_rings(vsi);
13482         i40e_vsi_clear(vsi);
13483
13484         /* If this was the last thing on the VEB, except for the
13485          * controlling VSI, remove the VEB, which puts the controlling
13486          * VSI onto the next level down in the switch.
13487          *
13488          * Well, okay, there's one more exception here: don't remove
13489          * the orphan VEBs yet.  We'll wait for an explicit remove request
13490          * from up the network stack.
13491          */
13492         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
13493                 if (pf->vsi[i] &&
13494                     pf->vsi[i]->uplink_seid == uplink_seid &&
13495                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
13496                         n++;      /* count the VSIs */
13497                 }
13498         }
13499         for (i = 0; i < I40E_MAX_VEB; i++) {
13500                 if (!pf->veb[i])
13501                         continue;
13502                 if (pf->veb[i]->uplink_seid == uplink_seid)
13503                         n++;     /* count the VEBs */
13504                 if (pf->veb[i]->seid == uplink_seid)
13505                         veb = pf->veb[i];
13506         }
13507         if (n == 0 && veb && veb->uplink_seid != 0)
13508                 i40e_veb_release(veb);
13509
13510         return 0;
13511 }
13512
13513 /**
13514  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
13515  * @vsi: ptr to the VSI
13516  *
13517  * This should only be called after i40e_vsi_mem_alloc() which allocates the
13518  * corresponding SW VSI structure and initializes num_queue_pairs for the
13519  * newly allocated VSI.
13520  *
13521  * Returns 0 on success or negative on failure
13522  **/
13523 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
13524 {
13525         int ret = -ENOENT;
13526         struct i40e_pf *pf = vsi->back;
13527
13528         if (vsi->q_vectors[0]) {
13529                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
13530                          vsi->seid);
13531                 return -EEXIST;
13532         }
13533
13534         if (vsi->base_vector) {
13535                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
13536                          vsi->seid, vsi->base_vector);
13537                 return -EEXIST;
13538         }
13539
13540         ret = i40e_vsi_alloc_q_vectors(vsi);
13541         if (ret) {
13542                 dev_info(&pf->pdev->dev,
13543                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
13544                          vsi->num_q_vectors, vsi->seid, ret);
13545                 vsi->num_q_vectors = 0;
13546                 goto vector_setup_out;
13547         }
13548
13549         /* In Legacy mode, we do not have to get any other vector since we
13550          * piggyback on the misc/ICR0 for queue interrupts.
13551         */
13552         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
13553                 return ret;
13554         if (vsi->num_q_vectors)
13555                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
13556                                                  vsi->num_q_vectors, vsi->idx);
13557         if (vsi->base_vector < 0) {
13558                 dev_info(&pf->pdev->dev,
13559                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
13560                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
13561                 i40e_vsi_free_q_vectors(vsi);
13562                 ret = -ENOENT;
13563                 goto vector_setup_out;
13564         }
13565
13566 vector_setup_out:
13567         return ret;
13568 }
13569
13570 /**
13571  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
13572  * @vsi: pointer to the vsi.
13573  *
13574  * This re-allocates a vsi's queue resources.
13575  *
13576  * Returns pointer to the successfully allocated and configured VSI sw struct
13577  * on success, otherwise returns NULL on failure.
13578  **/
13579 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
13580 {
13581         u16 alloc_queue_pairs;
13582         struct i40e_pf *pf;
13583         u8 enabled_tc;
13584         int ret;
13585
13586         if (!vsi)
13587                 return NULL;
13588
13589         pf = vsi->back;
13590
13591         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
13592         i40e_vsi_clear_rings(vsi);
13593
13594         i40e_vsi_free_arrays(vsi, false);
13595         i40e_set_num_rings_in_vsi(vsi);
13596         ret = i40e_vsi_alloc_arrays(vsi, false);
13597         if (ret)
13598                 goto err_vsi;
13599
13600         alloc_queue_pairs = vsi->alloc_queue_pairs *
13601                             (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
13602
13603         ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
13604         if (ret < 0) {
13605                 dev_info(&pf->pdev->dev,
13606                          "failed to get tracking for %d queues for VSI %d err %d\n",
13607                          alloc_queue_pairs, vsi->seid, ret);
13608                 goto err_vsi;
13609         }
13610         vsi->base_queue = ret;
13611
13612         /* Update the FW view of the VSI. Force a reset of TC and queue
13613          * layout configurations.
13614          */
13615         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
13616         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
13617         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
13618         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
13619         if (vsi->type == I40E_VSI_MAIN)
13620                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
13621
13622         /* assign it some queues */
13623         ret = i40e_alloc_rings(vsi);
13624         if (ret)
13625                 goto err_rings;
13626
13627         /* map all of the rings to the q_vectors */
13628         i40e_vsi_map_rings_to_vectors(vsi);
13629         return vsi;
13630
13631 err_rings:
13632         i40e_vsi_free_q_vectors(vsi);
13633         if (vsi->netdev_registered) {
13634                 vsi->netdev_registered = false;
13635                 unregister_netdev(vsi->netdev);
13636                 free_netdev(vsi->netdev);
13637                 vsi->netdev = NULL;
13638         }
13639         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
13640 err_vsi:
13641         i40e_vsi_clear(vsi);
13642         return NULL;
13643 }
13644
13645 /**
13646  * i40e_vsi_setup - Set up a VSI by a given type
13647  * @pf: board private structure
13648  * @type: VSI type
13649  * @uplink_seid: the switch element to link to
13650  * @param1: usage depends upon VSI type. For VF types, indicates VF id
13651  *
13652  * This allocates the sw VSI structure and its queue resources, then add a VSI
13653  * to the identified VEB.
13654  *
13655  * Returns pointer to the successfully allocated and configure VSI sw struct on
13656  * success, otherwise returns NULL on failure.
13657  **/
13658 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
13659                                 u16 uplink_seid, u32 param1)
13660 {
13661         struct i40e_vsi *vsi = NULL;
13662         struct i40e_veb *veb = NULL;
13663         u16 alloc_queue_pairs;
13664         int ret, i;
13665         int v_idx;
13666
13667         /* The requested uplink_seid must be either
13668          *     - the PF's port seid
13669          *              no VEB is needed because this is the PF
13670          *              or this is a Flow Director special case VSI
13671          *     - seid of an existing VEB
13672          *     - seid of a VSI that owns an existing VEB
13673          *     - seid of a VSI that doesn't own a VEB
13674          *              a new VEB is created and the VSI becomes the owner
13675          *     - seid of the PF VSI, which is what creates the first VEB
13676          *              this is a special case of the previous
13677          *
13678          * Find which uplink_seid we were given and create a new VEB if needed
13679          */
13680         for (i = 0; i < I40E_MAX_VEB; i++) {
13681                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
13682                         veb = pf->veb[i];
13683                         break;
13684                 }
13685         }
13686
13687         if (!veb && uplink_seid != pf->mac_seid) {
13688
13689                 for (i = 0; i < pf->num_alloc_vsi; i++) {
13690                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
13691                                 vsi = pf->vsi[i];
13692                                 break;
13693                         }
13694                 }
13695                 if (!vsi) {
13696                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
13697                                  uplink_seid);
13698                         return NULL;
13699                 }
13700
13701                 if (vsi->uplink_seid == pf->mac_seid)
13702                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
13703                                              vsi->tc_config.enabled_tc);
13704                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
13705                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
13706                                              vsi->tc_config.enabled_tc);
13707                 if (veb) {
13708                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
13709                                 dev_info(&vsi->back->pdev->dev,
13710                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
13711                                 return NULL;
13712                         }
13713                         /* We come up by default in VEPA mode if SRIOV is not
13714                          * already enabled, in which case we can't force VEPA
13715                          * mode.
13716                          */
13717                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
13718                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
13719                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
13720                         }
13721                         i40e_config_bridge_mode(veb);
13722                 }
13723                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
13724                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
13725                                 veb = pf->veb[i];
13726                 }
13727                 if (!veb) {
13728                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
13729                         return NULL;
13730                 }
13731
13732                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
13733                 uplink_seid = veb->seid;
13734         }
13735
13736         /* get vsi sw struct */
13737         v_idx = i40e_vsi_mem_alloc(pf, type);
13738         if (v_idx < 0)
13739                 goto err_alloc;
13740         vsi = pf->vsi[v_idx];
13741         if (!vsi)
13742                 goto err_alloc;
13743         vsi->type = type;
13744         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
13745
13746         if (type == I40E_VSI_MAIN)
13747                 pf->lan_vsi = v_idx;
13748         else if (type == I40E_VSI_SRIOV)
13749                 vsi->vf_id = param1;
13750         /* assign it some queues */
13751         alloc_queue_pairs = vsi->alloc_queue_pairs *
13752                             (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
13753
13754         ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
13755         if (ret < 0) {
13756                 dev_info(&pf->pdev->dev,
13757                          "failed to get tracking for %d queues for VSI %d err=%d\n",
13758                          alloc_queue_pairs, vsi->seid, ret);
13759                 goto err_vsi;
13760         }
13761         vsi->base_queue = ret;
13762
13763         /* get a VSI from the hardware */
13764         vsi->uplink_seid = uplink_seid;
13765         ret = i40e_add_vsi(vsi);
13766         if (ret)
13767                 goto err_vsi;
13768
13769         switch (vsi->type) {
13770         /* setup the netdev if needed */
13771         case I40E_VSI_MAIN:
13772         case I40E_VSI_VMDQ2:
13773                 ret = i40e_config_netdev(vsi);
13774                 if (ret)
13775                         goto err_netdev;
13776                 ret = register_netdev(vsi->netdev);
13777                 if (ret)
13778                         goto err_netdev;
13779                 vsi->netdev_registered = true;
13780                 netif_carrier_off(vsi->netdev);
13781 #ifdef CONFIG_I40E_DCB
13782                 /* Setup DCB netlink interface */
13783                 i40e_dcbnl_setup(vsi);
13784 #endif /* CONFIG_I40E_DCB */
13785                 fallthrough;
13786         case I40E_VSI_FDIR:
13787                 /* set up vectors and rings if needed */
13788                 ret = i40e_vsi_setup_vectors(vsi);
13789                 if (ret)
13790                         goto err_msix;
13791
13792                 ret = i40e_alloc_rings(vsi);
13793                 if (ret)
13794                         goto err_rings;
13795
13796                 /* map all of the rings to the q_vectors */
13797                 i40e_vsi_map_rings_to_vectors(vsi);
13798
13799                 i40e_vsi_reset_stats(vsi);
13800                 break;
13801         default:
13802                 /* no netdev or rings for the other VSI types */
13803                 break;
13804         }
13805
13806         if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
13807             (vsi->type == I40E_VSI_VMDQ2)) {
13808                 ret = i40e_vsi_config_rss(vsi);
13809         }
13810         return vsi;
13811
13812 err_rings:
13813         i40e_vsi_free_q_vectors(vsi);
13814 err_msix:
13815         if (vsi->netdev_registered) {
13816                 vsi->netdev_registered = false;
13817                 unregister_netdev(vsi->netdev);
13818                 free_netdev(vsi->netdev);
13819                 vsi->netdev = NULL;
13820         }
13821 err_netdev:
13822         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
13823 err_vsi:
13824         i40e_vsi_clear(vsi);
13825 err_alloc:
13826         return NULL;
13827 }
13828
13829 /**
13830  * i40e_veb_get_bw_info - Query VEB BW information
13831  * @veb: the veb to query
13832  *
13833  * Query the Tx scheduler BW configuration data for given VEB
13834  **/
13835 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
13836 {
13837         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
13838         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
13839         struct i40e_pf *pf = veb->pf;
13840         struct i40e_hw *hw = &pf->hw;
13841         u32 tc_bw_max;
13842         int ret = 0;
13843         int i;
13844
13845         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
13846                                                   &bw_data, NULL);
13847         if (ret) {
13848                 dev_info(&pf->pdev->dev,
13849                          "query veb bw config failed, err %s aq_err %s\n",
13850                          i40e_stat_str(&pf->hw, ret),
13851                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
13852                 goto out;
13853         }
13854
13855         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
13856                                                    &ets_data, NULL);
13857         if (ret) {
13858                 dev_info(&pf->pdev->dev,
13859                          "query veb bw ets config failed, err %s aq_err %s\n",
13860                          i40e_stat_str(&pf->hw, ret),
13861                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
13862                 goto out;
13863         }
13864
13865         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
13866         veb->bw_max_quanta = ets_data.tc_bw_max;
13867         veb->is_abs_credits = bw_data.absolute_credits_enable;
13868         veb->enabled_tc = ets_data.tc_valid_bits;
13869         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
13870                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
13871         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
13872                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
13873                 veb->bw_tc_limit_credits[i] =
13874                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
13875                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
13876         }
13877
13878 out:
13879         return ret;
13880 }
13881
13882 /**
13883  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
13884  * @pf: board private structure
13885  *
13886  * On error: returns error code (negative)
13887  * On success: returns vsi index in PF (positive)
13888  **/
13889 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
13890 {
13891         int ret = -ENOENT;
13892         struct i40e_veb *veb;
13893         int i;
13894
13895         /* Need to protect the allocation of switch elements at the PF level */
13896         mutex_lock(&pf->switch_mutex);
13897
13898         /* VEB list may be fragmented if VEB creation/destruction has
13899          * been happening.  We can afford to do a quick scan to look
13900          * for any free slots in the list.
13901          *
13902          * find next empty veb slot, looping back around if necessary
13903          */
13904         i = 0;
13905         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
13906                 i++;
13907         if (i >= I40E_MAX_VEB) {
13908                 ret = -ENOMEM;
13909                 goto err_alloc_veb;  /* out of VEB slots! */
13910         }
13911
13912         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
13913         if (!veb) {
13914                 ret = -ENOMEM;
13915                 goto err_alloc_veb;
13916         }
13917         veb->pf = pf;
13918         veb->idx = i;
13919         veb->enabled_tc = 1;
13920
13921         pf->veb[i] = veb;
13922         ret = i;
13923 err_alloc_veb:
13924         mutex_unlock(&pf->switch_mutex);
13925         return ret;
13926 }
13927
13928 /**
13929  * i40e_switch_branch_release - Delete a branch of the switch tree
13930  * @branch: where to start deleting
13931  *
13932  * This uses recursion to find the tips of the branch to be
13933  * removed, deleting until we get back to and can delete this VEB.
13934  **/
13935 static void i40e_switch_branch_release(struct i40e_veb *branch)
13936 {
13937         struct i40e_pf *pf = branch->pf;
13938         u16 branch_seid = branch->seid;
13939         u16 veb_idx = branch->idx;
13940         int i;
13941
13942         /* release any VEBs on this VEB - RECURSION */
13943         for (i = 0; i < I40E_MAX_VEB; i++) {
13944                 if (!pf->veb[i])
13945                         continue;
13946                 if (pf->veb[i]->uplink_seid == branch->seid)
13947                         i40e_switch_branch_release(pf->veb[i]);
13948         }
13949
13950         /* Release the VSIs on this VEB, but not the owner VSI.
13951          *
13952          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
13953          *       the VEB itself, so don't use (*branch) after this loop.
13954          */
13955         for (i = 0; i < pf->num_alloc_vsi; i++) {
13956                 if (!pf->vsi[i])
13957                         continue;
13958                 if (pf->vsi[i]->uplink_seid == branch_seid &&
13959                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
13960                         i40e_vsi_release(pf->vsi[i]);
13961                 }
13962         }
13963
13964         /* There's one corner case where the VEB might not have been
13965          * removed, so double check it here and remove it if needed.
13966          * This case happens if the veb was created from the debugfs
13967          * commands and no VSIs were added to it.
13968          */
13969         if (pf->veb[veb_idx])
13970                 i40e_veb_release(pf->veb[veb_idx]);
13971 }
13972
13973 /**
13974  * i40e_veb_clear - remove veb struct
13975  * @veb: the veb to remove
13976  **/
13977 static void i40e_veb_clear(struct i40e_veb *veb)
13978 {
13979         if (!veb)
13980                 return;
13981
13982         if (veb->pf) {
13983                 struct i40e_pf *pf = veb->pf;
13984
13985                 mutex_lock(&pf->switch_mutex);
13986                 if (pf->veb[veb->idx] == veb)
13987                         pf->veb[veb->idx] = NULL;
13988                 mutex_unlock(&pf->switch_mutex);
13989         }
13990
13991         kfree(veb);
13992 }
13993
13994 /**
13995  * i40e_veb_release - Delete a VEB and free its resources
13996  * @veb: the VEB being removed
13997  **/
13998 void i40e_veb_release(struct i40e_veb *veb)
13999 {
14000         struct i40e_vsi *vsi = NULL;
14001         struct i40e_pf *pf;
14002         int i, n = 0;
14003
14004         pf = veb->pf;
14005
14006         /* find the remaining VSI and check for extras */
14007         for (i = 0; i < pf->num_alloc_vsi; i++) {
14008                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
14009                         n++;
14010                         vsi = pf->vsi[i];
14011                 }
14012         }
14013         if (n != 1) {
14014                 dev_info(&pf->pdev->dev,
14015                          "can't remove VEB %d with %d VSIs left\n",
14016                          veb->seid, n);
14017                 return;
14018         }
14019
14020         /* move the remaining VSI to uplink veb */
14021         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
14022         if (veb->uplink_seid) {
14023                 vsi->uplink_seid = veb->uplink_seid;
14024                 if (veb->uplink_seid == pf->mac_seid)
14025                         vsi->veb_idx = I40E_NO_VEB;
14026                 else
14027                         vsi->veb_idx = veb->veb_idx;
14028         } else {
14029                 /* floating VEB */
14030                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
14031                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
14032         }
14033
14034         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
14035         i40e_veb_clear(veb);
14036 }
14037
14038 /**
14039  * i40e_add_veb - create the VEB in the switch
14040  * @veb: the VEB to be instantiated
14041  * @vsi: the controlling VSI
14042  **/
14043 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
14044 {
14045         struct i40e_pf *pf = veb->pf;
14046         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
14047         int ret;
14048
14049         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
14050                               veb->enabled_tc, false,
14051                               &veb->seid, enable_stats, NULL);
14052
14053         /* get a VEB from the hardware */
14054         if (ret) {
14055                 dev_info(&pf->pdev->dev,
14056                          "couldn't add VEB, err %s aq_err %s\n",
14057                          i40e_stat_str(&pf->hw, ret),
14058                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14059                 return -EPERM;
14060         }
14061
14062         /* get statistics counter */
14063         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
14064                                          &veb->stats_idx, NULL, NULL, NULL);
14065         if (ret) {
14066                 dev_info(&pf->pdev->dev,
14067                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
14068                          i40e_stat_str(&pf->hw, ret),
14069                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14070                 return -EPERM;
14071         }
14072         ret = i40e_veb_get_bw_info(veb);
14073         if (ret) {
14074                 dev_info(&pf->pdev->dev,
14075                          "couldn't get VEB bw info, err %s aq_err %s\n",
14076                          i40e_stat_str(&pf->hw, ret),
14077                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14078                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
14079                 return -ENOENT;
14080         }
14081
14082         vsi->uplink_seid = veb->seid;
14083         vsi->veb_idx = veb->idx;
14084         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
14085
14086         return 0;
14087 }
14088
14089 /**
14090  * i40e_veb_setup - Set up a VEB
14091  * @pf: board private structure
14092  * @flags: VEB setup flags
14093  * @uplink_seid: the switch element to link to
14094  * @vsi_seid: the initial VSI seid
14095  * @enabled_tc: Enabled TC bit-map
14096  *
14097  * This allocates the sw VEB structure and links it into the switch
14098  * It is possible and legal for this to be a duplicate of an already
14099  * existing VEB.  It is also possible for both uplink and vsi seids
14100  * to be zero, in order to create a floating VEB.
14101  *
14102  * Returns pointer to the successfully allocated VEB sw struct on
14103  * success, otherwise returns NULL on failure.
14104  **/
14105 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
14106                                 u16 uplink_seid, u16 vsi_seid,
14107                                 u8 enabled_tc)
14108 {
14109         struct i40e_veb *veb, *uplink_veb = NULL;
14110         int vsi_idx, veb_idx;
14111         int ret;
14112
14113         /* if one seid is 0, the other must be 0 to create a floating relay */
14114         if ((uplink_seid == 0 || vsi_seid == 0) &&
14115             (uplink_seid + vsi_seid != 0)) {
14116                 dev_info(&pf->pdev->dev,
14117                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
14118                          uplink_seid, vsi_seid);
14119                 return NULL;
14120         }
14121
14122         /* make sure there is such a vsi and uplink */
14123         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
14124                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
14125                         break;
14126         if (vsi_idx == pf->num_alloc_vsi && vsi_seid != 0) {
14127                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
14128                          vsi_seid);
14129                 return NULL;
14130         }
14131
14132         if (uplink_seid && uplink_seid != pf->mac_seid) {
14133                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
14134                         if (pf->veb[veb_idx] &&
14135                             pf->veb[veb_idx]->seid == uplink_seid) {
14136                                 uplink_veb = pf->veb[veb_idx];
14137                                 break;
14138                         }
14139                 }
14140                 if (!uplink_veb) {
14141                         dev_info(&pf->pdev->dev,
14142                                  "uplink seid %d not found\n", uplink_seid);
14143                         return NULL;
14144                 }
14145         }
14146
14147         /* get veb sw struct */
14148         veb_idx = i40e_veb_mem_alloc(pf);
14149         if (veb_idx < 0)
14150                 goto err_alloc;
14151         veb = pf->veb[veb_idx];
14152         veb->flags = flags;
14153         veb->uplink_seid = uplink_seid;
14154         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
14155         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
14156
14157         /* create the VEB in the switch */
14158         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
14159         if (ret)
14160                 goto err_veb;
14161         if (vsi_idx == pf->lan_vsi)
14162                 pf->lan_veb = veb->idx;
14163
14164         return veb;
14165
14166 err_veb:
14167         i40e_veb_clear(veb);
14168 err_alloc:
14169         return NULL;
14170 }
14171
14172 /**
14173  * i40e_setup_pf_switch_element - set PF vars based on switch type
14174  * @pf: board private structure
14175  * @ele: element we are building info from
14176  * @num_reported: total number of elements
14177  * @printconfig: should we print the contents
14178  *
14179  * helper function to assist in extracting a few useful SEID values.
14180  **/
14181 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
14182                                 struct i40e_aqc_switch_config_element_resp *ele,
14183                                 u16 num_reported, bool printconfig)
14184 {
14185         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
14186         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
14187         u8 element_type = ele->element_type;
14188         u16 seid = le16_to_cpu(ele->seid);
14189
14190         if (printconfig)
14191                 dev_info(&pf->pdev->dev,
14192                          "type=%d seid=%d uplink=%d downlink=%d\n",
14193                          element_type, seid, uplink_seid, downlink_seid);
14194
14195         switch (element_type) {
14196         case I40E_SWITCH_ELEMENT_TYPE_MAC:
14197                 pf->mac_seid = seid;
14198                 break;
14199         case I40E_SWITCH_ELEMENT_TYPE_VEB:
14200                 /* Main VEB? */
14201                 if (uplink_seid != pf->mac_seid)
14202                         break;
14203                 if (pf->lan_veb >= I40E_MAX_VEB) {
14204                         int v;
14205
14206                         /* find existing or else empty VEB */
14207                         for (v = 0; v < I40E_MAX_VEB; v++) {
14208                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
14209                                         pf->lan_veb = v;
14210                                         break;
14211                                 }
14212                         }
14213                         if (pf->lan_veb >= I40E_MAX_VEB) {
14214                                 v = i40e_veb_mem_alloc(pf);
14215                                 if (v < 0)
14216                                         break;
14217                                 pf->lan_veb = v;
14218                         }
14219                 }
14220                 if (pf->lan_veb >= I40E_MAX_VEB)
14221                         break;
14222
14223                 pf->veb[pf->lan_veb]->seid = seid;
14224                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
14225                 pf->veb[pf->lan_veb]->pf = pf;
14226                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
14227                 break;
14228         case I40E_SWITCH_ELEMENT_TYPE_VSI:
14229                 if (num_reported != 1)
14230                         break;
14231                 /* This is immediately after a reset so we can assume this is
14232                  * the PF's VSI
14233                  */
14234                 pf->mac_seid = uplink_seid;
14235                 pf->pf_seid = downlink_seid;
14236                 pf->main_vsi_seid = seid;
14237                 if (printconfig)
14238                         dev_info(&pf->pdev->dev,
14239                                  "pf_seid=%d main_vsi_seid=%d\n",
14240                                  pf->pf_seid, pf->main_vsi_seid);
14241                 break;
14242         case I40E_SWITCH_ELEMENT_TYPE_PF:
14243         case I40E_SWITCH_ELEMENT_TYPE_VF:
14244         case I40E_SWITCH_ELEMENT_TYPE_EMP:
14245         case I40E_SWITCH_ELEMENT_TYPE_BMC:
14246         case I40E_SWITCH_ELEMENT_TYPE_PE:
14247         case I40E_SWITCH_ELEMENT_TYPE_PA:
14248                 /* ignore these for now */
14249                 break;
14250         default:
14251                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
14252                          element_type, seid);
14253                 break;
14254         }
14255 }
14256
14257 /**
14258  * i40e_fetch_switch_configuration - Get switch config from firmware
14259  * @pf: board private structure
14260  * @printconfig: should we print the contents
14261  *
14262  * Get the current switch configuration from the device and
14263  * extract a few useful SEID values.
14264  **/
14265 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
14266 {
14267         struct i40e_aqc_get_switch_config_resp *sw_config;
14268         u16 next_seid = 0;
14269         int ret = 0;
14270         u8 *aq_buf;
14271         int i;
14272
14273         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
14274         if (!aq_buf)
14275                 return -ENOMEM;
14276
14277         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
14278         do {
14279                 u16 num_reported, num_total;
14280
14281                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
14282                                                 I40E_AQ_LARGE_BUF,
14283                                                 &next_seid, NULL);
14284                 if (ret) {
14285                         dev_info(&pf->pdev->dev,
14286                                  "get switch config failed err %s aq_err %s\n",
14287                                  i40e_stat_str(&pf->hw, ret),
14288                                  i40e_aq_str(&pf->hw,
14289                                              pf->hw.aq.asq_last_status));
14290                         kfree(aq_buf);
14291                         return -ENOENT;
14292                 }
14293
14294                 num_reported = le16_to_cpu(sw_config->header.num_reported);
14295                 num_total = le16_to_cpu(sw_config->header.num_total);
14296
14297                 if (printconfig)
14298                         dev_info(&pf->pdev->dev,
14299                                  "header: %d reported %d total\n",
14300                                  num_reported, num_total);
14301
14302                 for (i = 0; i < num_reported; i++) {
14303                         struct i40e_aqc_switch_config_element_resp *ele =
14304                                 &sw_config->element[i];
14305
14306                         i40e_setup_pf_switch_element(pf, ele, num_reported,
14307                                                      printconfig);
14308                 }
14309         } while (next_seid != 0);
14310
14311         kfree(aq_buf);
14312         return ret;
14313 }
14314
14315 /**
14316  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
14317  * @pf: board private structure
14318  * @reinit: if the Main VSI needs to re-initialized.
14319  *
14320  * Returns 0 on success, negative value on failure
14321  **/
14322 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
14323 {
14324         u16 flags = 0;
14325         int ret;
14326
14327         /* find out what's out there already */
14328         ret = i40e_fetch_switch_configuration(pf, false);
14329         if (ret) {
14330                 dev_info(&pf->pdev->dev,
14331                          "couldn't fetch switch config, err %s aq_err %s\n",
14332                          i40e_stat_str(&pf->hw, ret),
14333                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14334                 return ret;
14335         }
14336         i40e_pf_reset_stats(pf);
14337
14338         /* set the switch config bit for the whole device to
14339          * support limited promisc or true promisc
14340          * when user requests promisc. The default is limited
14341          * promisc.
14342         */
14343
14344         if ((pf->hw.pf_id == 0) &&
14345             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT)) {
14346                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
14347                 pf->last_sw_conf_flags = flags;
14348         }
14349
14350         if (pf->hw.pf_id == 0) {
14351                 u16 valid_flags;
14352
14353                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
14354                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags, 0,
14355                                                 NULL);
14356                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
14357                         dev_info(&pf->pdev->dev,
14358                                  "couldn't set switch config bits, err %s aq_err %s\n",
14359                                  i40e_stat_str(&pf->hw, ret),
14360                                  i40e_aq_str(&pf->hw,
14361                                              pf->hw.aq.asq_last_status));
14362                         /* not a fatal problem, just keep going */
14363                 }
14364                 pf->last_sw_conf_valid_flags = valid_flags;
14365         }
14366
14367         /* first time setup */
14368         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
14369                 struct i40e_vsi *vsi = NULL;
14370                 u16 uplink_seid;
14371
14372                 /* Set up the PF VSI associated with the PF's main VSI
14373                  * that is already in the HW switch
14374                  */
14375                 if (pf->lan_veb < I40E_MAX_VEB && pf->veb[pf->lan_veb])
14376                         uplink_seid = pf->veb[pf->lan_veb]->seid;
14377                 else
14378                         uplink_seid = pf->mac_seid;
14379                 if (pf->lan_vsi == I40E_NO_VSI)
14380                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
14381                 else if (reinit)
14382                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
14383                 if (!vsi) {
14384                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
14385                         i40e_cloud_filter_exit(pf);
14386                         i40e_fdir_teardown(pf);
14387                         return -EAGAIN;
14388                 }
14389         } else {
14390                 /* force a reset of TC and queue layout configurations */
14391                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
14392
14393                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
14394                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
14395                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
14396         }
14397         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
14398
14399         i40e_fdir_sb_setup(pf);
14400
14401         /* Setup static PF queue filter control settings */
14402         ret = i40e_setup_pf_filter_control(pf);
14403         if (ret) {
14404                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
14405                          ret);
14406                 /* Failure here should not stop continuing other steps */
14407         }
14408
14409         /* enable RSS in the HW, even for only one queue, as the stack can use
14410          * the hash
14411          */
14412         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
14413                 i40e_pf_config_rss(pf);
14414
14415         /* fill in link information and enable LSE reporting */
14416         i40e_link_event(pf);
14417
14418         /* Initialize user-specific link properties */
14419         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
14420                                   I40E_AQ_AN_COMPLETED) ? true : false);
14421
14422         i40e_ptp_init(pf);
14423
14424         /* repopulate tunnel port filters */
14425         i40e_sync_udp_filters(pf);
14426
14427         return ret;
14428 }
14429
14430 /**
14431  * i40e_determine_queue_usage - Work out queue distribution
14432  * @pf: board private structure
14433  **/
14434 static void i40e_determine_queue_usage(struct i40e_pf *pf)
14435 {
14436         int queues_left;
14437         int q_max;
14438
14439         pf->num_lan_qps = 0;
14440
14441         /* Find the max queues to be put into basic use.  We'll always be
14442          * using TC0, whether or not DCB is running, and TC0 will get the
14443          * big RSS set.
14444          */
14445         queues_left = pf->hw.func_caps.num_tx_qp;
14446
14447         if ((queues_left == 1) ||
14448             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
14449                 /* one qp for PF, no queues for anything else */
14450                 queues_left = 0;
14451                 pf->alloc_rss_size = pf->num_lan_qps = 1;
14452
14453                 /* make sure all the fancies are disabled */
14454                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
14455                                I40E_FLAG_IWARP_ENABLED  |
14456                                I40E_FLAG_FD_SB_ENABLED  |
14457                                I40E_FLAG_FD_ATR_ENABLED |
14458                                I40E_FLAG_DCB_CAPABLE    |
14459                                I40E_FLAG_DCB_ENABLED    |
14460                                I40E_FLAG_SRIOV_ENABLED  |
14461                                I40E_FLAG_VMDQ_ENABLED);
14462                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
14463         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
14464                                   I40E_FLAG_FD_SB_ENABLED |
14465                                   I40E_FLAG_FD_ATR_ENABLED |
14466                                   I40E_FLAG_DCB_CAPABLE))) {
14467                 /* one qp for PF */
14468                 pf->alloc_rss_size = pf->num_lan_qps = 1;
14469                 queues_left -= pf->num_lan_qps;
14470
14471                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
14472                                I40E_FLAG_IWARP_ENABLED  |
14473                                I40E_FLAG_FD_SB_ENABLED  |
14474                                I40E_FLAG_FD_ATR_ENABLED |
14475                                I40E_FLAG_DCB_ENABLED    |
14476                                I40E_FLAG_VMDQ_ENABLED);
14477                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
14478         } else {
14479                 /* Not enough queues for all TCs */
14480                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
14481                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
14482                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
14483                                         I40E_FLAG_DCB_ENABLED);
14484                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
14485                 }
14486
14487                 /* limit lan qps to the smaller of qps, cpus or msix */
14488                 q_max = max_t(int, pf->rss_size_max, num_online_cpus());
14489                 q_max = min_t(int, q_max, pf->hw.func_caps.num_tx_qp);
14490                 q_max = min_t(int, q_max, pf->hw.func_caps.num_msix_vectors);
14491                 pf->num_lan_qps = q_max;
14492
14493                 queues_left -= pf->num_lan_qps;
14494         }
14495
14496         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
14497                 if (queues_left > 1) {
14498                         queues_left -= 1; /* save 1 queue for FD */
14499                 } else {
14500                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
14501                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
14502                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
14503                 }
14504         }
14505
14506         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
14507             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
14508                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
14509                                         (queues_left / pf->num_vf_qps));
14510                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
14511         }
14512
14513         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
14514             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
14515                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
14516                                           (queues_left / pf->num_vmdq_qps));
14517                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
14518         }
14519
14520         pf->queues_left = queues_left;
14521         dev_dbg(&pf->pdev->dev,
14522                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
14523                 pf->hw.func_caps.num_tx_qp,
14524                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
14525                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
14526                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
14527                 queues_left);
14528 }
14529
14530 /**
14531  * i40e_setup_pf_filter_control - Setup PF static filter control
14532  * @pf: PF to be setup
14533  *
14534  * i40e_setup_pf_filter_control sets up a PF's initial filter control
14535  * settings. If PE/FCoE are enabled then it will also set the per PF
14536  * based filter sizes required for them. It also enables Flow director,
14537  * ethertype and macvlan type filter settings for the pf.
14538  *
14539  * Returns 0 on success, negative on failure
14540  **/
14541 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
14542 {
14543         struct i40e_filter_control_settings *settings = &pf->filter_settings;
14544
14545         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
14546
14547         /* Flow Director is enabled */
14548         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
14549                 settings->enable_fdir = true;
14550
14551         /* Ethtype and MACVLAN filters enabled for PF */
14552         settings->enable_ethtype = true;
14553         settings->enable_macvlan = true;
14554
14555         if (i40e_set_filter_control(&pf->hw, settings))
14556                 return -ENOENT;
14557
14558         return 0;
14559 }
14560
14561 #define INFO_STRING_LEN 255
14562 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
14563 static void i40e_print_features(struct i40e_pf *pf)
14564 {
14565         struct i40e_hw *hw = &pf->hw;
14566         char *buf;
14567         int i;
14568
14569         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
14570         if (!buf)
14571                 return;
14572
14573         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
14574 #ifdef CONFIG_PCI_IOV
14575         i += scnprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
14576 #endif
14577         i += scnprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
14578                       pf->hw.func_caps.num_vsis,
14579                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
14580         if (pf->flags & I40E_FLAG_RSS_ENABLED)
14581                 i += scnprintf(&buf[i], REMAIN(i), " RSS");
14582         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
14583                 i += scnprintf(&buf[i], REMAIN(i), " FD_ATR");
14584         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
14585                 i += scnprintf(&buf[i], REMAIN(i), " FD_SB");
14586                 i += scnprintf(&buf[i], REMAIN(i), " NTUPLE");
14587         }
14588         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
14589                 i += scnprintf(&buf[i], REMAIN(i), " DCB");
14590         i += scnprintf(&buf[i], REMAIN(i), " VxLAN");
14591         i += scnprintf(&buf[i], REMAIN(i), " Geneve");
14592         if (pf->flags & I40E_FLAG_PTP)
14593                 i += scnprintf(&buf[i], REMAIN(i), " PTP");
14594         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
14595                 i += scnprintf(&buf[i], REMAIN(i), " VEB");
14596         else
14597                 i += scnprintf(&buf[i], REMAIN(i), " VEPA");
14598
14599         dev_info(&pf->pdev->dev, "%s\n", buf);
14600         kfree(buf);
14601         WARN_ON(i > INFO_STRING_LEN);
14602 }
14603
14604 /**
14605  * i40e_get_platform_mac_addr - get platform-specific MAC address
14606  * @pdev: PCI device information struct
14607  * @pf: board private structure
14608  *
14609  * Look up the MAC address for the device. First we'll try
14610  * eth_platform_get_mac_address, which will check Open Firmware, or arch
14611  * specific fallback. Otherwise, we'll default to the stored value in
14612  * firmware.
14613  **/
14614 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
14615 {
14616         if (eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
14617                 i40e_get_mac_addr(&pf->hw, pf->hw.mac.addr);
14618 }
14619
14620 /**
14621  * i40e_set_fec_in_flags - helper function for setting FEC options in flags
14622  * @fec_cfg: FEC option to set in flags
14623  * @flags: ptr to flags in which we set FEC option
14624  **/
14625 void i40e_set_fec_in_flags(u8 fec_cfg, u32 *flags)
14626 {
14627         if (fec_cfg & I40E_AQ_SET_FEC_AUTO)
14628                 *flags |= I40E_FLAG_RS_FEC | I40E_FLAG_BASE_R_FEC;
14629         if ((fec_cfg & I40E_AQ_SET_FEC_REQUEST_RS) ||
14630             (fec_cfg & I40E_AQ_SET_FEC_ABILITY_RS)) {
14631                 *flags |= I40E_FLAG_RS_FEC;
14632                 *flags &= ~I40E_FLAG_BASE_R_FEC;
14633         }
14634         if ((fec_cfg & I40E_AQ_SET_FEC_REQUEST_KR) ||
14635             (fec_cfg & I40E_AQ_SET_FEC_ABILITY_KR)) {
14636                 *flags |= I40E_FLAG_BASE_R_FEC;
14637                 *flags &= ~I40E_FLAG_RS_FEC;
14638         }
14639         if (fec_cfg == 0)
14640                 *flags &= ~(I40E_FLAG_RS_FEC | I40E_FLAG_BASE_R_FEC);
14641 }
14642
14643 /**
14644  * i40e_check_recovery_mode - check if we are running transition firmware
14645  * @pf: board private structure
14646  *
14647  * Check registers indicating the firmware runs in recovery mode. Sets the
14648  * appropriate driver state.
14649  *
14650  * Returns true if the recovery mode was detected, false otherwise
14651  **/
14652 static bool i40e_check_recovery_mode(struct i40e_pf *pf)
14653 {
14654         u32 val = rd32(&pf->hw, I40E_GL_FWSTS);
14655
14656         if (val & I40E_GL_FWSTS_FWS1B_MASK) {
14657                 dev_crit(&pf->pdev->dev, "Firmware recovery mode detected. Limiting functionality.\n");
14658                 dev_crit(&pf->pdev->dev, "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for details on firmware recovery mode.\n");
14659                 set_bit(__I40E_RECOVERY_MODE, pf->state);
14660
14661                 return true;
14662         }
14663         if (test_bit(__I40E_RECOVERY_MODE, pf->state))
14664                 dev_info(&pf->pdev->dev, "Please do Power-On Reset to initialize adapter in normal mode with full functionality.\n");
14665
14666         return false;
14667 }
14668
14669 /**
14670  * i40e_pf_loop_reset - perform reset in a loop.
14671  * @pf: board private structure
14672  *
14673  * This function is useful when a NIC is about to enter recovery mode.
14674  * When a NIC's internal data structures are corrupted the NIC's
14675  * firmware is going to enter recovery mode.
14676  * Right after a POR it takes about 7 minutes for firmware to enter
14677  * recovery mode. Until that time a NIC is in some kind of intermediate
14678  * state. After that time period the NIC almost surely enters
14679  * recovery mode. The only way for a driver to detect intermediate
14680  * state is to issue a series of pf-resets and check a return value.
14681  * If a PF reset returns success then the firmware could be in recovery
14682  * mode so the caller of this code needs to check for recovery mode
14683  * if this function returns success. There is a little chance that
14684  * firmware will hang in intermediate state forever.
14685  * Since waiting 7 minutes is quite a lot of time this function waits
14686  * 10 seconds and then gives up by returning an error.
14687  *
14688  * Return 0 on success, negative on failure.
14689  **/
14690 static i40e_status i40e_pf_loop_reset(struct i40e_pf *pf)
14691 {
14692         /* wait max 10 seconds for PF reset to succeed */
14693         const unsigned long time_end = jiffies + 10 * HZ;
14694
14695         struct i40e_hw *hw = &pf->hw;
14696         i40e_status ret;
14697
14698         ret = i40e_pf_reset(hw);
14699         while (ret != I40E_SUCCESS && time_before(jiffies, time_end)) {
14700                 usleep_range(10000, 20000);
14701                 ret = i40e_pf_reset(hw);
14702         }
14703
14704         if (ret == I40E_SUCCESS)
14705                 pf->pfr_count++;
14706         else
14707                 dev_info(&pf->pdev->dev, "PF reset failed: %d\n", ret);
14708
14709         return ret;
14710 }
14711
14712 /**
14713  * i40e_check_fw_empr - check if FW issued unexpected EMP Reset
14714  * @pf: board private structure
14715  *
14716  * Check FW registers to determine if FW issued unexpected EMP Reset.
14717  * Every time when unexpected EMP Reset occurs the FW increments
14718  * a counter of unexpected EMP Resets. When the counter reaches 10
14719  * the FW should enter the Recovery mode
14720  *
14721  * Returns true if FW issued unexpected EMP Reset
14722  **/
14723 static bool i40e_check_fw_empr(struct i40e_pf *pf)
14724 {
14725         const u32 fw_sts = rd32(&pf->hw, I40E_GL_FWSTS) &
14726                            I40E_GL_FWSTS_FWS1B_MASK;
14727         return (fw_sts > I40E_GL_FWSTS_FWS1B_EMPR_0) &&
14728                (fw_sts <= I40E_GL_FWSTS_FWS1B_EMPR_10);
14729 }
14730
14731 /**
14732  * i40e_handle_resets - handle EMP resets and PF resets
14733  * @pf: board private structure
14734  *
14735  * Handle both EMP resets and PF resets and conclude whether there are
14736  * any issues regarding these resets. If there are any issues then
14737  * generate log entry.
14738  *
14739  * Return 0 if NIC is healthy or negative value when there are issues
14740  * with resets
14741  **/
14742 static i40e_status i40e_handle_resets(struct i40e_pf *pf)
14743 {
14744         const i40e_status pfr = i40e_pf_loop_reset(pf);
14745         const bool is_empr = i40e_check_fw_empr(pf);
14746
14747         if (is_empr || pfr != I40E_SUCCESS)
14748                 dev_crit(&pf->pdev->dev, "Entering recovery mode due to repeated FW resets. This may take several minutes. Refer to the Intel(R) Ethernet Adapters and Devices User Guide.\n");
14749
14750         return is_empr ? I40E_ERR_RESET_FAILED : pfr;
14751 }
14752
14753 /**
14754  * i40e_init_recovery_mode - initialize subsystems needed in recovery mode
14755  * @pf: board private structure
14756  * @hw: ptr to the hardware info
14757  *
14758  * This function does a minimal setup of all subsystems needed for running
14759  * recovery mode.
14760  *
14761  * Returns 0 on success, negative on failure
14762  **/
14763 static int i40e_init_recovery_mode(struct i40e_pf *pf, struct i40e_hw *hw)
14764 {
14765         struct i40e_vsi *vsi;
14766         int err;
14767         int v_idx;
14768
14769         pci_save_state(pf->pdev);
14770
14771         /* set up periodic task facility */
14772         timer_setup(&pf->service_timer, i40e_service_timer, 0);
14773         pf->service_timer_period = HZ;
14774
14775         INIT_WORK(&pf->service_task, i40e_service_task);
14776         clear_bit(__I40E_SERVICE_SCHED, pf->state);
14777
14778         err = i40e_init_interrupt_scheme(pf);
14779         if (err)
14780                 goto err_switch_setup;
14781
14782         /* The number of VSIs reported by the FW is the minimum guaranteed
14783          * to us; HW supports far more and we share the remaining pool with
14784          * the other PFs. We allocate space for more than the guarantee with
14785          * the understanding that we might not get them all later.
14786          */
14787         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
14788                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
14789         else
14790                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
14791
14792         /* Set up the vsi struct and our local tracking of the MAIN PF vsi. */
14793         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
14794                           GFP_KERNEL);
14795         if (!pf->vsi) {
14796                 err = -ENOMEM;
14797                 goto err_switch_setup;
14798         }
14799
14800         /* We allocate one VSI which is needed as absolute minimum
14801          * in order to register the netdev
14802          */
14803         v_idx = i40e_vsi_mem_alloc(pf, I40E_VSI_MAIN);
14804         if (v_idx < 0)
14805                 goto err_switch_setup;
14806         pf->lan_vsi = v_idx;
14807         vsi = pf->vsi[v_idx];
14808         if (!vsi)
14809                 goto err_switch_setup;
14810         vsi->alloc_queue_pairs = 1;
14811         err = i40e_config_netdev(vsi);
14812         if (err)
14813                 goto err_switch_setup;
14814         err = register_netdev(vsi->netdev);
14815         if (err)
14816                 goto err_switch_setup;
14817         vsi->netdev_registered = true;
14818         i40e_dbg_pf_init(pf);
14819
14820         err = i40e_setup_misc_vector_for_recovery_mode(pf);
14821         if (err)
14822                 goto err_switch_setup;
14823
14824         /* tell the firmware that we're starting */
14825         i40e_send_version(pf);
14826
14827         /* since everything's happy, start the service_task timer */
14828         mod_timer(&pf->service_timer,
14829                   round_jiffies(jiffies + pf->service_timer_period));
14830
14831         return 0;
14832
14833 err_switch_setup:
14834         i40e_reset_interrupt_capability(pf);
14835         del_timer_sync(&pf->service_timer);
14836         i40e_shutdown_adminq(hw);
14837         iounmap(hw->hw_addr);
14838         pci_disable_pcie_error_reporting(pf->pdev);
14839         pci_release_mem_regions(pf->pdev);
14840         pci_disable_device(pf->pdev);
14841         kfree(pf);
14842
14843         return err;
14844 }
14845
14846 /**
14847  * i40e_probe - Device initialization routine
14848  * @pdev: PCI device information struct
14849  * @ent: entry in i40e_pci_tbl
14850  *
14851  * i40e_probe initializes a PF identified by a pci_dev structure.
14852  * The OS initialization, configuring of the PF private structure,
14853  * and a hardware reset occur.
14854  *
14855  * Returns 0 on success, negative on failure
14856  **/
14857 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
14858 {
14859         struct i40e_aq_get_phy_abilities_resp abilities;
14860         struct i40e_pf *pf;
14861         struct i40e_hw *hw;
14862         static u16 pfs_found;
14863         u16 wol_nvm_bits;
14864         u16 link_status;
14865         int err;
14866         u32 val;
14867         u32 i;
14868         u8 set_fc_aq_fail;
14869
14870         err = pci_enable_device_mem(pdev);
14871         if (err)
14872                 return err;
14873
14874         /* set up for high or low dma */
14875         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
14876         if (err) {
14877                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
14878                 if (err) {
14879                         dev_err(&pdev->dev,
14880                                 "DMA configuration failed: 0x%x\n", err);
14881                         goto err_dma;
14882                 }
14883         }
14884
14885         /* set up pci connections */
14886         err = pci_request_mem_regions(pdev, i40e_driver_name);
14887         if (err) {
14888                 dev_info(&pdev->dev,
14889                          "pci_request_selected_regions failed %d\n", err);
14890                 goto err_pci_reg;
14891         }
14892
14893         pci_enable_pcie_error_reporting(pdev);
14894         pci_set_master(pdev);
14895
14896         /* Now that we have a PCI connection, we need to do the
14897          * low level device setup.  This is primarily setting up
14898          * the Admin Queue structures and then querying for the
14899          * device's current profile information.
14900          */
14901         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
14902         if (!pf) {
14903                 err = -ENOMEM;
14904                 goto err_pf_alloc;
14905         }
14906         pf->next_vsi = 0;
14907         pf->pdev = pdev;
14908         set_bit(__I40E_DOWN, pf->state);
14909
14910         hw = &pf->hw;
14911         hw->back = pf;
14912
14913         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
14914                                 I40E_MAX_CSR_SPACE);
14915         /* We believe that the highest register to read is
14916          * I40E_GLGEN_STAT_CLEAR, so we check if the BAR size
14917          * is not less than that before mapping to prevent a
14918          * kernel panic.
14919          */
14920         if (pf->ioremap_len < I40E_GLGEN_STAT_CLEAR) {
14921                 dev_err(&pdev->dev, "Cannot map registers, bar size 0x%X too small, aborting\n",
14922                         pf->ioremap_len);
14923                 err = -ENOMEM;
14924                 goto err_ioremap;
14925         }
14926         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
14927         if (!hw->hw_addr) {
14928                 err = -EIO;
14929                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
14930                          (unsigned int)pci_resource_start(pdev, 0),
14931                          pf->ioremap_len, err);
14932                 goto err_ioremap;
14933         }
14934         hw->vendor_id = pdev->vendor;
14935         hw->device_id = pdev->device;
14936         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
14937         hw->subsystem_vendor_id = pdev->subsystem_vendor;
14938         hw->subsystem_device_id = pdev->subsystem_device;
14939         hw->bus.device = PCI_SLOT(pdev->devfn);
14940         hw->bus.func = PCI_FUNC(pdev->devfn);
14941         hw->bus.bus_id = pdev->bus->number;
14942         pf->instance = pfs_found;
14943
14944         /* Select something other than the 802.1ad ethertype for the
14945          * switch to use internally and drop on ingress.
14946          */
14947         hw->switch_tag = 0xffff;
14948         hw->first_tag = ETH_P_8021AD;
14949         hw->second_tag = ETH_P_8021Q;
14950
14951         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
14952         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
14953         INIT_LIST_HEAD(&pf->ddp_old_prof);
14954
14955         /* set up the locks for the AQ, do this only once in probe
14956          * and destroy them only once in remove
14957          */
14958         mutex_init(&hw->aq.asq_mutex);
14959         mutex_init(&hw->aq.arq_mutex);
14960
14961         pf->msg_enable = netif_msg_init(debug,
14962                                         NETIF_MSG_DRV |
14963                                         NETIF_MSG_PROBE |
14964                                         NETIF_MSG_LINK);
14965         if (debug < -1)
14966                 pf->hw.debug_mask = debug;
14967
14968         /* do a special CORER for clearing PXE mode once at init */
14969         if (hw->revision_id == 0 &&
14970             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
14971                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
14972                 i40e_flush(hw);
14973                 msleep(200);
14974                 pf->corer_count++;
14975
14976                 i40e_clear_pxe_mode(hw);
14977         }
14978
14979         /* Reset here to make sure all is clean and to define PF 'n' */
14980         i40e_clear_hw(hw);
14981
14982         err = i40e_set_mac_type(hw);
14983         if (err) {
14984                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
14985                          err);
14986                 goto err_pf_reset;
14987         }
14988
14989         err = i40e_handle_resets(pf);
14990         if (err)
14991                 goto err_pf_reset;
14992
14993         i40e_check_recovery_mode(pf);
14994
14995         hw->aq.num_arq_entries = I40E_AQ_LEN;
14996         hw->aq.num_asq_entries = I40E_AQ_LEN;
14997         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
14998         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
14999         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
15000
15001         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
15002                  "%s-%s:misc",
15003                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
15004
15005         err = i40e_init_shared_code(hw);
15006         if (err) {
15007                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
15008                          err);
15009                 goto err_pf_reset;
15010         }
15011
15012         /* set up a default setting for link flow control */
15013         pf->hw.fc.requested_mode = I40E_FC_NONE;
15014
15015         err = i40e_init_adminq(hw);
15016         if (err) {
15017                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
15018                         dev_info(&pdev->dev,
15019                                  "The driver for the device stopped because the NVM image v%u.%u is newer than expected v%u.%u. You must install the most recent version of the network driver.\n",
15020                                  hw->aq.api_maj_ver,
15021                                  hw->aq.api_min_ver,
15022                                  I40E_FW_API_VERSION_MAJOR,
15023                                  I40E_FW_MINOR_VERSION(hw));
15024                 else
15025                         dev_info(&pdev->dev,
15026                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
15027
15028                 goto err_pf_reset;
15029         }
15030         i40e_get_oem_version(hw);
15031
15032         /* provide nvm, fw, api versions, vendor:device id, subsys vendor:device id */
15033         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s [%04x:%04x] [%04x:%04x]\n",
15034                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
15035                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
15036                  i40e_nvm_version_str(hw), hw->vendor_id, hw->device_id,
15037                  hw->subsystem_vendor_id, hw->subsystem_device_id);
15038
15039         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
15040             hw->aq.api_min_ver > I40E_FW_MINOR_VERSION(hw))
15041                 dev_info(&pdev->dev,
15042                          "The driver for the device detected a newer version of the NVM image v%u.%u than expected v%u.%u. Please install the most recent version of the network driver.\n",
15043                          hw->aq.api_maj_ver,
15044                          hw->aq.api_min_ver,
15045                          I40E_FW_API_VERSION_MAJOR,
15046                          I40E_FW_MINOR_VERSION(hw));
15047         else if (hw->aq.api_maj_ver == 1 && hw->aq.api_min_ver < 4)
15048                 dev_info(&pdev->dev,
15049                          "The driver for the device detected an older version of the NVM image v%u.%u than expected v%u.%u. Please update the NVM image.\n",
15050                          hw->aq.api_maj_ver,
15051                          hw->aq.api_min_ver,
15052                          I40E_FW_API_VERSION_MAJOR,
15053                          I40E_FW_MINOR_VERSION(hw));
15054
15055         i40e_verify_eeprom(pf);
15056
15057         /* Rev 0 hardware was never productized */
15058         if (hw->revision_id < 1)
15059                 dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");
15060
15061         i40e_clear_pxe_mode(hw);
15062
15063         err = i40e_get_capabilities(pf, i40e_aqc_opc_list_func_capabilities);
15064         if (err)
15065                 goto err_adminq_setup;
15066
15067         err = i40e_sw_init(pf);
15068         if (err) {
15069                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
15070                 goto err_sw_init;
15071         }
15072
15073         if (test_bit(__I40E_RECOVERY_MODE, pf->state))
15074                 return i40e_init_recovery_mode(pf, hw);
15075
15076         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
15077                                 hw->func_caps.num_rx_qp, 0, 0);
15078         if (err) {
15079                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
15080                 goto err_init_lan_hmc;
15081         }
15082
15083         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
15084         if (err) {
15085                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
15086                 err = -ENOENT;
15087                 goto err_configure_lan_hmc;
15088         }
15089
15090         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
15091          * Ignore error return codes because if it was already disabled via
15092          * hardware settings this will fail
15093          */
15094         if (pf->hw_features & I40E_HW_STOP_FW_LLDP) {
15095                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
15096                 i40e_aq_stop_lldp(hw, true, false, NULL);
15097         }
15098
15099         /* allow a platform config to override the HW addr */
15100         i40e_get_platform_mac_addr(pdev, pf);
15101
15102         if (!is_valid_ether_addr(hw->mac.addr)) {
15103                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
15104                 err = -EIO;
15105                 goto err_mac_addr;
15106         }
15107         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
15108         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
15109         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
15110         if (is_valid_ether_addr(hw->mac.port_addr))
15111                 pf->hw_features |= I40E_HW_PORT_ID_VALID;
15112
15113         pci_set_drvdata(pdev, pf);
15114         pci_save_state(pdev);
15115
15116         dev_info(&pdev->dev,
15117                  (pf->flags & I40E_FLAG_DISABLE_FW_LLDP) ?
15118                         "FW LLDP is disabled\n" :
15119                         "FW LLDP is enabled\n");
15120
15121         /* Enable FW to write default DCB config on link-up */
15122         i40e_aq_set_dcb_parameters(hw, true, NULL);
15123
15124 #ifdef CONFIG_I40E_DCB
15125         err = i40e_init_pf_dcb(pf);
15126         if (err) {
15127                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
15128                 pf->flags &= ~(I40E_FLAG_DCB_CAPABLE | I40E_FLAG_DCB_ENABLED);
15129                 /* Continue without DCB enabled */
15130         }
15131 #endif /* CONFIG_I40E_DCB */
15132
15133         /* set up periodic task facility */
15134         timer_setup(&pf->service_timer, i40e_service_timer, 0);
15135         pf->service_timer_period = HZ;
15136
15137         INIT_WORK(&pf->service_task, i40e_service_task);
15138         clear_bit(__I40E_SERVICE_SCHED, pf->state);
15139
15140         /* NVM bit on means WoL disabled for the port */
15141         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
15142         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
15143                 pf->wol_en = false;
15144         else
15145                 pf->wol_en = true;
15146         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
15147
15148         /* set up the main switch operations */
15149         i40e_determine_queue_usage(pf);
15150         err = i40e_init_interrupt_scheme(pf);
15151         if (err)
15152                 goto err_switch_setup;
15153
15154         /* The number of VSIs reported by the FW is the minimum guaranteed
15155          * to us; HW supports far more and we share the remaining pool with
15156          * the other PFs. We allocate space for more than the guarantee with
15157          * the understanding that we might not get them all later.
15158          */
15159         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
15160                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
15161         else
15162                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
15163
15164         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
15165         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
15166                           GFP_KERNEL);
15167         if (!pf->vsi) {
15168                 err = -ENOMEM;
15169                 goto err_switch_setup;
15170         }
15171
15172 #ifdef CONFIG_PCI_IOV
15173         /* prep for VF support */
15174         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
15175             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
15176             !test_bit(__I40E_BAD_EEPROM, pf->state)) {
15177                 if (pci_num_vf(pdev))
15178                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
15179         }
15180 #endif
15181         err = i40e_setup_pf_switch(pf, false);
15182         if (err) {
15183                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
15184                 goto err_vsis;
15185         }
15186         INIT_LIST_HEAD(&pf->vsi[pf->lan_vsi]->ch_list);
15187
15188         /* Make sure flow control is set according to current settings */
15189         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
15190         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
15191                 dev_dbg(&pf->pdev->dev,
15192                         "Set fc with err %s aq_err %s on get_phy_cap\n",
15193                         i40e_stat_str(hw, err),
15194                         i40e_aq_str(hw, hw->aq.asq_last_status));
15195         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
15196                 dev_dbg(&pf->pdev->dev,
15197                         "Set fc with err %s aq_err %s on set_phy_config\n",
15198                         i40e_stat_str(hw, err),
15199                         i40e_aq_str(hw, hw->aq.asq_last_status));
15200         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
15201                 dev_dbg(&pf->pdev->dev,
15202                         "Set fc with err %s aq_err %s on get_link_info\n",
15203                         i40e_stat_str(hw, err),
15204                         i40e_aq_str(hw, hw->aq.asq_last_status));
15205
15206         /* if FDIR VSI was set up, start it now */
15207         for (i = 0; i < pf->num_alloc_vsi; i++) {
15208                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
15209                         i40e_vsi_open(pf->vsi[i]);
15210                         break;
15211                 }
15212         }
15213
15214         /* The driver only wants link up/down and module qualification
15215          * reports from firmware.  Note the negative logic.
15216          */
15217         err = i40e_aq_set_phy_int_mask(&pf->hw,
15218                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
15219                                          I40E_AQ_EVENT_MEDIA_NA |
15220                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
15221         if (err)
15222                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
15223                          i40e_stat_str(&pf->hw, err),
15224                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
15225
15226         /* Reconfigure hardware for allowing smaller MSS in the case
15227          * of TSO, so that we avoid the MDD being fired and causing
15228          * a reset in the case of small MSS+TSO.
15229          */
15230         val = rd32(hw, I40E_REG_MSS);
15231         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
15232                 val &= ~I40E_REG_MSS_MIN_MASK;
15233                 val |= I40E_64BYTE_MSS;
15234                 wr32(hw, I40E_REG_MSS, val);
15235         }
15236
15237         if (pf->hw_features & I40E_HW_RESTART_AUTONEG) {
15238                 msleep(75);
15239                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
15240                 if (err)
15241                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
15242                                  i40e_stat_str(&pf->hw, err),
15243                                  i40e_aq_str(&pf->hw,
15244                                              pf->hw.aq.asq_last_status));
15245         }
15246         /* The main driver is (mostly) up and happy. We need to set this state
15247          * before setting up the misc vector or we get a race and the vector
15248          * ends up disabled forever.
15249          */
15250         clear_bit(__I40E_DOWN, pf->state);
15251
15252         /* In case of MSIX we are going to setup the misc vector right here
15253          * to handle admin queue events etc. In case of legacy and MSI
15254          * the misc functionality and queue processing is combined in
15255          * the same vector and that gets setup at open.
15256          */
15257         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
15258                 err = i40e_setup_misc_vector(pf);
15259                 if (err) {
15260                         dev_info(&pdev->dev,
15261                                  "setup of misc vector failed: %d\n", err);
15262                         goto err_vsis;
15263                 }
15264         }
15265
15266 #ifdef CONFIG_PCI_IOV
15267         /* prep for VF support */
15268         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
15269             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
15270             !test_bit(__I40E_BAD_EEPROM, pf->state)) {
15271                 /* disable link interrupts for VFs */
15272                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
15273                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
15274                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
15275                 i40e_flush(hw);
15276
15277                 if (pci_num_vf(pdev)) {
15278                         dev_info(&pdev->dev,
15279                                  "Active VFs found, allocating resources.\n");
15280                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
15281                         if (err)
15282                                 dev_info(&pdev->dev,
15283                                          "Error %d allocating resources for existing VFs\n",
15284                                          err);
15285                 }
15286         }
15287 #endif /* CONFIG_PCI_IOV */
15288
15289         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
15290                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
15291                                                       pf->num_iwarp_msix,
15292                                                       I40E_IWARP_IRQ_PILE_ID);
15293                 if (pf->iwarp_base_vector < 0) {
15294                         dev_info(&pdev->dev,
15295                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
15296                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
15297                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
15298                 }
15299         }
15300
15301         i40e_dbg_pf_init(pf);
15302
15303         /* tell the firmware that we're starting */
15304         i40e_send_version(pf);
15305
15306         /* since everything's happy, start the service_task timer */
15307         mod_timer(&pf->service_timer,
15308                   round_jiffies(jiffies + pf->service_timer_period));
15309
15310         /* add this PF to client device list and launch a client service task */
15311         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
15312                 err = i40e_lan_add_device(pf);
15313                 if (err)
15314                         dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
15315                                  err);
15316         }
15317
15318 #define PCI_SPEED_SIZE 8
15319 #define PCI_WIDTH_SIZE 8
15320         /* Devices on the IOSF bus do not have this information
15321          * and will report PCI Gen 1 x 1 by default so don't bother
15322          * checking them.
15323          */
15324         if (!(pf->hw_features & I40E_HW_NO_PCI_LINK_CHECK)) {
15325                 char speed[PCI_SPEED_SIZE] = "Unknown";
15326                 char width[PCI_WIDTH_SIZE] = "Unknown";
15327
15328                 /* Get the negotiated link width and speed from PCI config
15329                  * space
15330                  */
15331                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
15332                                           &link_status);
15333
15334                 i40e_set_pci_config_data(hw, link_status);
15335
15336                 switch (hw->bus.speed) {
15337                 case i40e_bus_speed_8000:
15338                         strlcpy(speed, "8.0", PCI_SPEED_SIZE); break;
15339                 case i40e_bus_speed_5000:
15340                         strlcpy(speed, "5.0", PCI_SPEED_SIZE); break;
15341                 case i40e_bus_speed_2500:
15342                         strlcpy(speed, "2.5", PCI_SPEED_SIZE); break;
15343                 default:
15344                         break;
15345                 }
15346                 switch (hw->bus.width) {
15347                 case i40e_bus_width_pcie_x8:
15348                         strlcpy(width, "8", PCI_WIDTH_SIZE); break;
15349                 case i40e_bus_width_pcie_x4:
15350                         strlcpy(width, "4", PCI_WIDTH_SIZE); break;
15351                 case i40e_bus_width_pcie_x2:
15352                         strlcpy(width, "2", PCI_WIDTH_SIZE); break;
15353                 case i40e_bus_width_pcie_x1:
15354                         strlcpy(width, "1", PCI_WIDTH_SIZE); break;
15355                 default:
15356                         break;
15357                 }
15358
15359                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
15360                          speed, width);
15361
15362                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
15363                     hw->bus.speed < i40e_bus_speed_8000) {
15364                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
15365                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
15366                 }
15367         }
15368
15369         /* get the requested speeds from the fw */
15370         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
15371         if (err)
15372                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
15373                         i40e_stat_str(&pf->hw, err),
15374                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
15375         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
15376
15377         /* set the FEC config due to the board capabilities */
15378         i40e_set_fec_in_flags(abilities.fec_cfg_curr_mod_ext_info, &pf->flags);
15379
15380         /* get the supported phy types from the fw */
15381         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
15382         if (err)
15383                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
15384                         i40e_stat_str(&pf->hw, err),
15385                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
15386
15387         /* make sure the MFS hasn't been set lower than the default */
15388 #define MAX_FRAME_SIZE_DEFAULT 0x2600
15389         val = (rd32(&pf->hw, I40E_PRTGL_SAH) &
15390                I40E_PRTGL_SAH_MFS_MASK) >> I40E_PRTGL_SAH_MFS_SHIFT;
15391         if (val < MAX_FRAME_SIZE_DEFAULT)
15392                 dev_warn(&pdev->dev, "MFS for port %x has been set below the default: %x\n",
15393                          i, val);
15394
15395         /* Add a filter to drop all Flow control frames from any VSI from being
15396          * transmitted. By doing so we stop a malicious VF from sending out
15397          * PAUSE or PFC frames and potentially controlling traffic for other
15398          * PF/VF VSIs.
15399          * The FW can still send Flow control frames if enabled.
15400          */
15401         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
15402                                                        pf->main_vsi_seid);
15403
15404         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
15405                 (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
15406                 pf->hw_features |= I40E_HW_PHY_CONTROLS_LEDS;
15407         if (pf->hw.device_id == I40E_DEV_ID_SFP_I_X722)
15408                 pf->hw_features |= I40E_HW_HAVE_CRT_RETIMER;
15409         /* print a string summarizing features */
15410         i40e_print_features(pf);
15411
15412         return 0;
15413
15414         /* Unwind what we've done if something failed in the setup */
15415 err_vsis:
15416         set_bit(__I40E_DOWN, pf->state);
15417         i40e_clear_interrupt_scheme(pf);
15418         kfree(pf->vsi);
15419 err_switch_setup:
15420         i40e_reset_interrupt_capability(pf);
15421         del_timer_sync(&pf->service_timer);
15422 err_mac_addr:
15423 err_configure_lan_hmc:
15424         (void)i40e_shutdown_lan_hmc(hw);
15425 err_init_lan_hmc:
15426         kfree(pf->qp_pile);
15427 err_sw_init:
15428 err_adminq_setup:
15429 err_pf_reset:
15430         iounmap(hw->hw_addr);
15431 err_ioremap:
15432         kfree(pf);
15433 err_pf_alloc:
15434         pci_disable_pcie_error_reporting(pdev);
15435         pci_release_mem_regions(pdev);
15436 err_pci_reg:
15437 err_dma:
15438         pci_disable_device(pdev);
15439         return err;
15440 }
15441
15442 /**
15443  * i40e_remove - Device removal routine
15444  * @pdev: PCI device information struct
15445  *
15446  * i40e_remove is called by the PCI subsystem to alert the driver
15447  * that is should release a PCI device.  This could be caused by a
15448  * Hot-Plug event, or because the driver is going to be removed from
15449  * memory.
15450  **/
15451 static void i40e_remove(struct pci_dev *pdev)
15452 {
15453         struct i40e_pf *pf = pci_get_drvdata(pdev);
15454         struct i40e_hw *hw = &pf->hw;
15455         i40e_status ret_code;
15456         int i;
15457
15458         i40e_dbg_pf_exit(pf);
15459
15460         i40e_ptp_stop(pf);
15461
15462         /* Disable RSS in hw */
15463         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
15464         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
15465
15466         /* no more scheduling of any task */
15467         set_bit(__I40E_SUSPENDED, pf->state);
15468         set_bit(__I40E_DOWN, pf->state);
15469         if (pf->service_timer.function)
15470                 del_timer_sync(&pf->service_timer);
15471         if (pf->service_task.func)
15472                 cancel_work_sync(&pf->service_task);
15473
15474         if (test_bit(__I40E_RECOVERY_MODE, pf->state)) {
15475                 struct i40e_vsi *vsi = pf->vsi[0];
15476
15477                 /* We know that we have allocated only one vsi for this PF,
15478                  * it was just for registering netdevice, so the interface
15479                  * could be visible in the 'ifconfig' output
15480                  */
15481                 unregister_netdev(vsi->netdev);
15482                 free_netdev(vsi->netdev);
15483
15484                 goto unmap;
15485         }
15486
15487         /* Client close must be called explicitly here because the timer
15488          * has been stopped.
15489          */
15490         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
15491
15492         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
15493                 i40e_free_vfs(pf);
15494                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
15495         }
15496
15497         i40e_fdir_teardown(pf);
15498
15499         /* If there is a switch structure or any orphans, remove them.
15500          * This will leave only the PF's VSI remaining.
15501          */
15502         for (i = 0; i < I40E_MAX_VEB; i++) {
15503                 if (!pf->veb[i])
15504                         continue;
15505
15506                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
15507                     pf->veb[i]->uplink_seid == 0)
15508                         i40e_switch_branch_release(pf->veb[i]);
15509         }
15510
15511         /* Now we can shutdown the PF's VSI, just before we kill
15512          * adminq and hmc.
15513          */
15514         if (pf->vsi[pf->lan_vsi])
15515                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
15516
15517         i40e_cloud_filter_exit(pf);
15518
15519         /* remove attached clients */
15520         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
15521                 ret_code = i40e_lan_del_device(pf);
15522                 if (ret_code)
15523                         dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
15524                                  ret_code);
15525         }
15526
15527         /* shutdown and destroy the HMC */
15528         if (hw->hmc.hmc_obj) {
15529                 ret_code = i40e_shutdown_lan_hmc(hw);
15530                 if (ret_code)
15531                         dev_warn(&pdev->dev,
15532                                  "Failed to destroy the HMC resources: %d\n",
15533                                  ret_code);
15534         }
15535
15536 unmap:
15537         /* Free MSI/legacy interrupt 0 when in recovery mode. */
15538         if (test_bit(__I40E_RECOVERY_MODE, pf->state) &&
15539             !(pf->flags & I40E_FLAG_MSIX_ENABLED))
15540                 free_irq(pf->pdev->irq, pf);
15541
15542         /* shutdown the adminq */
15543         i40e_shutdown_adminq(hw);
15544
15545         /* destroy the locks only once, here */
15546         mutex_destroy(&hw->aq.arq_mutex);
15547         mutex_destroy(&hw->aq.asq_mutex);
15548
15549         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
15550         rtnl_lock();
15551         i40e_clear_interrupt_scheme(pf);
15552         for (i = 0; i < pf->num_alloc_vsi; i++) {
15553                 if (pf->vsi[i]) {
15554                         if (!test_bit(__I40E_RECOVERY_MODE, pf->state))
15555                                 i40e_vsi_clear_rings(pf->vsi[i]);
15556                         i40e_vsi_clear(pf->vsi[i]);
15557                         pf->vsi[i] = NULL;
15558                 }
15559         }
15560         rtnl_unlock();
15561
15562         for (i = 0; i < I40E_MAX_VEB; i++) {
15563                 kfree(pf->veb[i]);
15564                 pf->veb[i] = NULL;
15565         }
15566
15567         kfree(pf->qp_pile);
15568         kfree(pf->vsi);
15569
15570         iounmap(hw->hw_addr);
15571         kfree(pf);
15572         pci_release_mem_regions(pdev);
15573
15574         pci_disable_pcie_error_reporting(pdev);
15575         pci_disable_device(pdev);
15576 }
15577
15578 /**
15579  * i40e_pci_error_detected - warning that something funky happened in PCI land
15580  * @pdev: PCI device information struct
15581  * @error: the type of PCI error
15582  *
15583  * Called to warn that something happened and the error handling steps
15584  * are in progress.  Allows the driver to quiesce things, be ready for
15585  * remediation.
15586  **/
15587 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
15588                                                 enum pci_channel_state error)
15589 {
15590         struct i40e_pf *pf = pci_get_drvdata(pdev);
15591
15592         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
15593
15594         if (!pf) {
15595                 dev_info(&pdev->dev,
15596                          "Cannot recover - error happened during device probe\n");
15597                 return PCI_ERS_RESULT_DISCONNECT;
15598         }
15599
15600         /* shutdown all operations */
15601         if (!test_bit(__I40E_SUSPENDED, pf->state))
15602                 i40e_prep_for_reset(pf, false);
15603
15604         /* Request a slot reset */
15605         return PCI_ERS_RESULT_NEED_RESET;
15606 }
15607
15608 /**
15609  * i40e_pci_error_slot_reset - a PCI slot reset just happened
15610  * @pdev: PCI device information struct
15611  *
15612  * Called to find if the driver can work with the device now that
15613  * the pci slot has been reset.  If a basic connection seems good
15614  * (registers are readable and have sane content) then return a
15615  * happy little PCI_ERS_RESULT_xxx.
15616  **/
15617 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
15618 {
15619         struct i40e_pf *pf = pci_get_drvdata(pdev);
15620         pci_ers_result_t result;
15621         u32 reg;
15622
15623         dev_dbg(&pdev->dev, "%s\n", __func__);
15624         if (pci_enable_device_mem(pdev)) {
15625                 dev_info(&pdev->dev,
15626                          "Cannot re-enable PCI device after reset.\n");
15627                 result = PCI_ERS_RESULT_DISCONNECT;
15628         } else {
15629                 pci_set_master(pdev);
15630                 pci_restore_state(pdev);
15631                 pci_save_state(pdev);
15632                 pci_wake_from_d3(pdev, false);
15633
15634                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
15635                 if (reg == 0)
15636                         result = PCI_ERS_RESULT_RECOVERED;
15637                 else
15638                         result = PCI_ERS_RESULT_DISCONNECT;
15639         }
15640
15641         return result;
15642 }
15643
15644 /**
15645  * i40e_pci_error_reset_prepare - prepare device driver for pci reset
15646  * @pdev: PCI device information struct
15647  */
15648 static void i40e_pci_error_reset_prepare(struct pci_dev *pdev)
15649 {
15650         struct i40e_pf *pf = pci_get_drvdata(pdev);
15651
15652         i40e_prep_for_reset(pf, false);
15653 }
15654
15655 /**
15656  * i40e_pci_error_reset_done - pci reset done, device driver reset can begin
15657  * @pdev: PCI device information struct
15658  */
15659 static void i40e_pci_error_reset_done(struct pci_dev *pdev)
15660 {
15661         struct i40e_pf *pf = pci_get_drvdata(pdev);
15662
15663         i40e_reset_and_rebuild(pf, false, false);
15664 }
15665
15666 /**
15667  * i40e_pci_error_resume - restart operations after PCI error recovery
15668  * @pdev: PCI device information struct
15669  *
15670  * Called to allow the driver to bring things back up after PCI error
15671  * and/or reset recovery has finished.
15672  **/
15673 static void i40e_pci_error_resume(struct pci_dev *pdev)
15674 {
15675         struct i40e_pf *pf = pci_get_drvdata(pdev);
15676
15677         dev_dbg(&pdev->dev, "%s\n", __func__);
15678         if (test_bit(__I40E_SUSPENDED, pf->state))
15679                 return;
15680
15681         i40e_handle_reset_warning(pf, false);
15682 }
15683
15684 /**
15685  * i40e_enable_mc_magic_wake - enable multicast magic packet wake up
15686  * using the mac_address_write admin q function
15687  * @pf: pointer to i40e_pf struct
15688  **/
15689 static void i40e_enable_mc_magic_wake(struct i40e_pf *pf)
15690 {
15691         struct i40e_hw *hw = &pf->hw;
15692         i40e_status ret;
15693         u8 mac_addr[6];
15694         u16 flags = 0;
15695
15696         /* Get current MAC address in case it's an LAA */
15697         if (pf->vsi[pf->lan_vsi] && pf->vsi[pf->lan_vsi]->netdev) {
15698                 ether_addr_copy(mac_addr,
15699                                 pf->vsi[pf->lan_vsi]->netdev->dev_addr);
15700         } else {
15701                 dev_err(&pf->pdev->dev,
15702                         "Failed to retrieve MAC address; using default\n");
15703                 ether_addr_copy(mac_addr, hw->mac.addr);
15704         }
15705
15706         /* The FW expects the mac address write cmd to first be called with
15707          * one of these flags before calling it again with the multicast
15708          * enable flags.
15709          */
15710         flags = I40E_AQC_WRITE_TYPE_LAA_WOL;
15711
15712         if (hw->func_caps.flex10_enable && hw->partition_id != 1)
15713                 flags = I40E_AQC_WRITE_TYPE_LAA_ONLY;
15714
15715         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
15716         if (ret) {
15717                 dev_err(&pf->pdev->dev,
15718                         "Failed to update MAC address registers; cannot enable Multicast Magic packet wake up");
15719                 return;
15720         }
15721
15722         flags = I40E_AQC_MC_MAG_EN
15723                         | I40E_AQC_WOL_PRESERVE_ON_PFR
15724                         | I40E_AQC_WRITE_TYPE_UPDATE_MC_MAG;
15725         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
15726         if (ret)
15727                 dev_err(&pf->pdev->dev,
15728                         "Failed to enable Multicast Magic Packet wake up\n");
15729 }
15730
15731 /**
15732  * i40e_shutdown - PCI callback for shutting down
15733  * @pdev: PCI device information struct
15734  **/
15735 static void i40e_shutdown(struct pci_dev *pdev)
15736 {
15737         struct i40e_pf *pf = pci_get_drvdata(pdev);
15738         struct i40e_hw *hw = &pf->hw;
15739
15740         set_bit(__I40E_SUSPENDED, pf->state);
15741         set_bit(__I40E_DOWN, pf->state);
15742
15743         del_timer_sync(&pf->service_timer);
15744         cancel_work_sync(&pf->service_task);
15745         i40e_cloud_filter_exit(pf);
15746         i40e_fdir_teardown(pf);
15747
15748         /* Client close must be called explicitly here because the timer
15749          * has been stopped.
15750          */
15751         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
15752
15753         if (pf->wol_en && (pf->hw_features & I40E_HW_WOL_MC_MAGIC_PKT_WAKE))
15754                 i40e_enable_mc_magic_wake(pf);
15755
15756         i40e_prep_for_reset(pf, false);
15757
15758         wr32(hw, I40E_PFPM_APM,
15759              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
15760         wr32(hw, I40E_PFPM_WUFC,
15761              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
15762
15763         /* Free MSI/legacy interrupt 0 when in recovery mode. */
15764         if (test_bit(__I40E_RECOVERY_MODE, pf->state) &&
15765             !(pf->flags & I40E_FLAG_MSIX_ENABLED))
15766                 free_irq(pf->pdev->irq, pf);
15767
15768         /* Since we're going to destroy queues during the
15769          * i40e_clear_interrupt_scheme() we should hold the RTNL lock for this
15770          * whole section
15771          */
15772         rtnl_lock();
15773         i40e_clear_interrupt_scheme(pf);
15774         rtnl_unlock();
15775
15776         if (system_state == SYSTEM_POWER_OFF) {
15777                 pci_wake_from_d3(pdev, pf->wol_en);
15778                 pci_set_power_state(pdev, PCI_D3hot);
15779         }
15780 }
15781
15782 /**
15783  * i40e_suspend - PM callback for moving to D3
15784  * @dev: generic device information structure
15785  **/
15786 static int __maybe_unused i40e_suspend(struct device *dev)
15787 {
15788         struct i40e_pf *pf = dev_get_drvdata(dev);
15789         struct i40e_hw *hw = &pf->hw;
15790
15791         /* If we're already suspended, then there is nothing to do */
15792         if (test_and_set_bit(__I40E_SUSPENDED, pf->state))
15793                 return 0;
15794
15795         set_bit(__I40E_DOWN, pf->state);
15796
15797         /* Ensure service task will not be running */
15798         del_timer_sync(&pf->service_timer);
15799         cancel_work_sync(&pf->service_task);
15800
15801         /* Client close must be called explicitly here because the timer
15802          * has been stopped.
15803          */
15804         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
15805
15806         if (pf->wol_en && (pf->hw_features & I40E_HW_WOL_MC_MAGIC_PKT_WAKE))
15807                 i40e_enable_mc_magic_wake(pf);
15808
15809         /* Since we're going to destroy queues during the
15810          * i40e_clear_interrupt_scheme() we should hold the RTNL lock for this
15811          * whole section
15812          */
15813         rtnl_lock();
15814
15815         i40e_prep_for_reset(pf, true);
15816
15817         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
15818         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
15819
15820         /* Clear the interrupt scheme and release our IRQs so that the system
15821          * can safely hibernate even when there are a large number of CPUs.
15822          * Otherwise hibernation might fail when mapping all the vectors back
15823          * to CPU0.
15824          */
15825         i40e_clear_interrupt_scheme(pf);
15826
15827         rtnl_unlock();
15828
15829         return 0;
15830 }
15831
15832 /**
15833  * i40e_resume - PM callback for waking up from D3
15834  * @dev: generic device information structure
15835  **/
15836 static int __maybe_unused i40e_resume(struct device *dev)
15837 {
15838         struct i40e_pf *pf = dev_get_drvdata(dev);
15839         int err;
15840
15841         /* If we're not suspended, then there is nothing to do */
15842         if (!test_bit(__I40E_SUSPENDED, pf->state))
15843                 return 0;
15844
15845         /* We need to hold the RTNL lock prior to restoring interrupt schemes,
15846          * since we're going to be restoring queues
15847          */
15848         rtnl_lock();
15849
15850         /* We cleared the interrupt scheme when we suspended, so we need to
15851          * restore it now to resume device functionality.
15852          */
15853         err = i40e_restore_interrupt_scheme(pf);
15854         if (err) {
15855                 dev_err(dev, "Cannot restore interrupt scheme: %d\n",
15856                         err);
15857         }
15858
15859         clear_bit(__I40E_DOWN, pf->state);
15860         i40e_reset_and_rebuild(pf, false, true);
15861
15862         rtnl_unlock();
15863
15864         /* Clear suspended state last after everything is recovered */
15865         clear_bit(__I40E_SUSPENDED, pf->state);
15866
15867         /* Restart the service task */
15868         mod_timer(&pf->service_timer,
15869                   round_jiffies(jiffies + pf->service_timer_period));
15870
15871         return 0;
15872 }
15873
15874 static const struct pci_error_handlers i40e_err_handler = {
15875         .error_detected = i40e_pci_error_detected,
15876         .slot_reset = i40e_pci_error_slot_reset,
15877         .reset_prepare = i40e_pci_error_reset_prepare,
15878         .reset_done = i40e_pci_error_reset_done,
15879         .resume = i40e_pci_error_resume,
15880 };
15881
15882 static SIMPLE_DEV_PM_OPS(i40e_pm_ops, i40e_suspend, i40e_resume);
15883
15884 static struct pci_driver i40e_driver = {
15885         .name     = i40e_driver_name,
15886         .id_table = i40e_pci_tbl,
15887         .probe    = i40e_probe,
15888         .remove   = i40e_remove,
15889         .driver   = {
15890                 .pm = &i40e_pm_ops,
15891         },
15892         .shutdown = i40e_shutdown,
15893         .err_handler = &i40e_err_handler,
15894         .sriov_configure = i40e_pci_sriov_configure,
15895 };
15896
15897 /**
15898  * i40e_init_module - Driver registration routine
15899  *
15900  * i40e_init_module is the first routine called when the driver is
15901  * loaded. All it does is register with the PCI subsystem.
15902  **/
15903 static int __init i40e_init_module(void)
15904 {
15905         pr_info("%s: %s\n", i40e_driver_name, i40e_driver_string);
15906         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
15907
15908         /* There is no need to throttle the number of active tasks because
15909          * each device limits its own task using a state bit for scheduling
15910          * the service task, and the device tasks do not interfere with each
15911          * other, so we don't set a max task limit. We must set WQ_MEM_RECLAIM
15912          * since we need to be able to guarantee forward progress even under
15913          * memory pressure.
15914          */
15915         i40e_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0, i40e_driver_name);
15916         if (!i40e_wq) {
15917                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
15918                 return -ENOMEM;
15919         }
15920
15921         i40e_dbg_init();
15922         return pci_register_driver(&i40e_driver);
15923 }
15924 module_init(i40e_init_module);
15925
15926 /**
15927  * i40e_exit_module - Driver exit cleanup routine
15928  *
15929  * i40e_exit_module is called just before the driver is removed
15930  * from memory.
15931  **/
15932 static void __exit i40e_exit_module(void)
15933 {
15934         pci_unregister_driver(&i40e_driver);
15935         destroy_workqueue(i40e_wq);
15936         i40e_dbg_exit();
15937 }
15938 module_exit(i40e_exit_module);