drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c

   1 /*******************************************************************************
   2
   3   Intel 10 Gigabit PCI Express Linux driver
   4   Copyright(c) 1999 - 2013 Intel Corporation.
   5
   6   This program is free software; you can redistribute it and/or modify it
   7   under the terms and conditions of the GNU General Public License,
   8   version 2, as published by the Free Software Foundation.
   9
  10   This program is distributed in the hope it will be useful, but WITHOUT
  11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13   more details.
  14
  15   You should have received a copy of the GNU General Public License along with
  16   this program; if not, write to the Free Software Foundation, Inc.,
  17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19   The full GNU General Public License is included in this distribution in
  20   the file called "COPYING".
  21
  22   Contact Information:
  23   Linux NICS <[email protected]>
  24   e1000-devel Mailing List <[email protected]>
  25   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  26
  27 *******************************************************************************/
  28
  29 #include "ixgbe.h"
  30 #include <linux/dcbnl.h>
  31 #include "ixgbe_dcb_82598.h"
  32 #include "ixgbe_dcb_82599.h"
  33 #include "ixgbe_sriov.h"
  34
  35 /* Callbacks for DCB netlink in the kernel */
  36 #define BIT_DCB_MODE    0x01
  37 #define BIT_PFC         0x02
  38 #define BIT_PG_RX       0x04
  39 #define BIT_PG_TX       0x08
  40 #define BIT_APP_UPCHG   0x10
  41 #define BIT_LINKSPEED   0x80
  42
  43 /* Responses for the DCB_C_SET_ALL command */
  44 #define DCB_HW_CHG_RST  0  /* DCB configuration changed with reset */
  45 #define DCB_NO_HW_CHG   1  /* DCB configuration did not change */
  46 #define DCB_HW_CHG      2  /* DCB configuration changed, no reset */
  47
  48 static int ixgbe_copy_dcb_cfg(struct ixgbe_adapter *adapter, int tc_max)
  49 {
  50         struct ixgbe_dcb_config *scfg = &adapter->temp_dcb_cfg;
  51         struct ixgbe_dcb_config *dcfg = &adapter->dcb_cfg;
  52         struct tc_configuration *src = NULL;
  53         struct tc_configuration *dst = NULL;
  54         int i, j;
  55         int tx = DCB_TX_CONFIG;
  56         int rx = DCB_RX_CONFIG;
  57         int changes = 0;
  58 #ifdef IXGBE_FCOE
  59         struct dcb_app app = {
  60                               .selector = DCB_APP_IDTYPE_ETHTYPE,
  61                               .protocol = ETH_P_FCOE,
  62                              };
  63         u8 up = dcb_getapp(adapter->netdev, &app);
  64
  65         if (up && !(up & (1 << adapter->fcoe.up)))
  66                 changes |= BIT_APP_UPCHG;
  67 #endif
  68
  69         for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
  70                 src = &scfg->tc_config[i - DCB_PG_ATTR_TC_0];
  71                 dst = &dcfg->tc_config[i - DCB_PG_ATTR_TC_0];
  72
  73                 if (dst->path[tx].prio_type != src->path[tx].prio_type) {
  74                         dst->path[tx].prio_type = src->path[tx].prio_type;
  75                         changes |= BIT_PG_TX;
  76                 }
  77
  78                 if (dst->path[tx].bwg_id != src->path[tx].bwg_id) {
  79                         dst->path[tx].bwg_id = src->path[tx].bwg_id;
  80                         changes |= BIT_PG_TX;
  81                 }
  82
  83                 if (dst->path[tx].bwg_percent != src->path[tx].bwg_percent) {
  84                         dst->path[tx].bwg_percent = src->path[tx].bwg_percent;
  85                         changes |= BIT_PG_TX;
  86                 }
  87
  88                 if (dst->path[tx].up_to_tc_bitmap !=
  89                                 src->path[tx].up_to_tc_bitmap) {
  90                         dst->path[tx].up_to_tc_bitmap =
  91                                 src->path[tx].up_to_tc_bitmap;
  92                         changes |= (BIT_PG_TX | BIT_PFC | BIT_APP_UPCHG);
  93                 }
  94
  95                 if (dst->path[rx].prio_type != src->path[rx].prio_type) {
  96                         dst->path[rx].prio_type = src->path[rx].prio_type;
  97                         changes |= BIT_PG_RX;
  98                 }
  99
 100                 if (dst->path[rx].bwg_id != src->path[rx].bwg_id) {
 101                         dst->path[rx].bwg_id = src->path[rx].bwg_id;
 102                         changes |= BIT_PG_RX;
 103                 }
 104
 105                 if (dst->path[rx].bwg_percent != src->path[rx].bwg_percent) {
 106                         dst->path[rx].bwg_percent = src->path[rx].bwg_percent;
 107                         changes |= BIT_PG_RX;
 108                 }
 109
 110                 if (dst->path[rx].up_to_tc_bitmap !=
 111                                 src->path[rx].up_to_tc_bitmap) {
 112                         dst->path[rx].up_to_tc_bitmap =
 113                                 src->path[rx].up_to_tc_bitmap;
 114                         changes |= (BIT_PG_RX | BIT_PFC | BIT_APP_UPCHG);
 115                 }
 116         }
 117
 118         for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
 119                 j = i - DCB_PG_ATTR_BW_ID_0;
 120                 if (dcfg->bw_percentage[tx][j] != scfg->bw_percentage[tx][j]) {
 121                         dcfg->bw_percentage[tx][j] = scfg->bw_percentage[tx][j];
 122                         changes |= BIT_PG_TX;
 123                 }
 124                 if (dcfg->bw_percentage[rx][j] != scfg->bw_percentage[rx][j]) {
 125                         dcfg->bw_percentage[rx][j] = scfg->bw_percentage[rx][j];
 126                         changes |= BIT_PG_RX;
 127                 }
 128         }
 129
 130         for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
 131                 j = i - DCB_PFC_UP_ATTR_0;
 132                 if (dcfg->tc_config[j].dcb_pfc != scfg->tc_config[j].dcb_pfc) {
 133                         dcfg->tc_config[j].dcb_pfc = scfg->tc_config[j].dcb_pfc;
 134                         changes |= BIT_PFC;
 135                 }
 136         }
 137
 138         if (dcfg->pfc_mode_enable != scfg->pfc_mode_enable) {
 139                 dcfg->pfc_mode_enable = scfg->pfc_mode_enable;
 140                 changes |= BIT_PFC;
 141         }
 142
 143         return changes;
 144 }
 145
 146 static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
 147 {
 148         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 149
 150         return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
 151 }
 152
 153 static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
 154 {
 155         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 156         int err = 0;
 157
 158         /* Fail command if not in CEE mode */
 159         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 160                 return 1;
 161
 162         /* verify there is something to do, if not then exit */
 163         if (!state == !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
 164                 goto out;
 165
 166         err = ixgbe_setup_tc(netdev,
 167                              state ? adapter->dcb_cfg.num_tcs.pg_tcs : 0);
 168 out:
 169         return !!err;
 170 }
 171
 172 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 173                                          u8 *perm_addr)
 174 {
 175         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 176         int i, j;
 177
 178         memset(perm_addr, 0xff, MAX_ADDR_LEN);
 179
 180         for (i = 0; i < netdev->addr_len; i++)
 181                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
 182
 183         switch (adapter->hw.mac.type) {
 184         case ixgbe_mac_82599EB:
 185         case ixgbe_mac_X540:
 186                 for (j = 0; j < netdev->addr_len; j++, i++)
 187                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 188                 break;
 189         default:
 190                 break;
 191         }
 192 }
 193
 194 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 195                                          u8 prio, u8 bwg_id, u8 bw_pct,
 196                                          u8 up_map)
 197 {
 198         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 199
 200         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 201                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 202         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 203                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 204         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 205                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 206                         bw_pct;
 207         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 208                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 209                         up_map;
 210 }
 211
 212 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 213                                           u8 bw_pct)
 214 {
 215         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 216
 217         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 218 }
 219
 220 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 221                                          u8 prio, u8 bwg_id, u8 bw_pct,
 222                                          u8 up_map)
 223 {
 224         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 225
 226         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 227                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 228         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 229                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 230         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 231                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 232                         bw_pct;
 233         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 234                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 235                         up_map;
 236 }
 237
 238 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 239                                           u8 bw_pct)
 240 {
 241         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 242
 243         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 244 }
 245
 246 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 247                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 248                                          u8 *up_map)
 249 {
 250         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 251
 252         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
 253         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
 254         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
 255         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
 256 }
 257
 258 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 259                                           u8 *bw_pct)
 260 {
 261         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 262
 263         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
 264 }
 265
 266 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 267                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 268                                          u8 *up_map)
 269 {
 270         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 271
 272         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
 273         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
 274         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
 275         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
 276 }
 277
 278 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 279                                           u8 *bw_pct)
 280 {
 281         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 282
 283         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
 284 }
 285
 286 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
 287                                     u8 setting)
 288 {
 289         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 290
 291         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
 292         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
 293             adapter->dcb_cfg.tc_config[priority].dcb_pfc)
 294                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
 295 }
 296
 297 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 298                                     u8 *setting)
 299 {
 300         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 301
 302         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 303 }
 304
 305 static void ixgbe_dcbnl_devreset(struct net_device *dev)
 306 {
 307         struct ixgbe_adapter *adapter = netdev_priv(dev);
 308
 309         while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 310                 usleep_range(1000, 2000);
 311
 312         if (netif_running(dev))
 313                 dev->netdev_ops->ndo_stop(dev);
 314
 315         ixgbe_clear_interrupt_scheme(adapter);
 316         ixgbe_init_interrupt_scheme(adapter);
 317
 318         if (netif_running(dev))
 319                 dev->netdev_ops->ndo_open(dev);
 320
 321         clear_bit(__IXGBE_RESETTING, &adapter->state);
 322 }
 323
 324 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 325 {
 326         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 327         struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg;
 328         struct ixgbe_hw *hw = &adapter->hw;
 329         int ret = DCB_NO_HW_CHG;
 330         int i;
 331
 332         /* Fail command if not in CEE mode */
 333         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 334                 return ret;
 335
 336         adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(adapter,
 337                                                       MAX_TRAFFIC_CLASS);
 338         if (!adapter->dcb_set_bitmap)
 339                 return ret;
 340
 341         if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
 342                 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
 343                 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
 344                 /* Priority to TC mapping in CEE case default to 1:1 */
 345                 u8 prio_tc[MAX_USER_PRIORITY];
 346                 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
 347
 348 #ifdef IXGBE_FCOE
 349                 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
 350                         max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
 351 #endif
 352
 353                 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
 354                                                DCB_TX_CONFIG);
 355                 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
 356                                                DCB_RX_CONFIG);
 357
 358                 ixgbe_dcb_unpack_refill(dcb_cfg, DCB_TX_CONFIG, refill);
 359                 ixgbe_dcb_unpack_max(dcb_cfg, max);
 360                 ixgbe_dcb_unpack_bwgid(dcb_cfg, DCB_TX_CONFIG, bwg_id);
 361                 ixgbe_dcb_unpack_prio(dcb_cfg, DCB_TX_CONFIG, prio_type);
 362                 ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
 363
 364                 ixgbe_dcb_hw_ets_config(hw, refill, max, bwg_id,
 365                                         prio_type, prio_tc);
 366
 367                 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 368                         netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
 369
 370                 ret = DCB_HW_CHG_RST;
 371         }
 372
 373         if (adapter->dcb_set_bitmap & BIT_PFC) {
 374                 if (dcb_cfg->pfc_mode_enable) {
 375                         u8 pfc_en;
 376                         u8 prio_tc[MAX_USER_PRIORITY];
 377
 378                         ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
 379                         ixgbe_dcb_unpack_pfc(dcb_cfg, &pfc_en);
 380                         ixgbe_dcb_hw_pfc_config(hw, pfc_en, prio_tc);
 381                 } else {
 382                         hw->mac.ops.fc_enable(hw);
 383                 }
 384
 385                 ixgbe_set_rx_drop_en(adapter);
 386
 387                 ret = DCB_HW_CHG;
 388         }
 389
 390 #ifdef IXGBE_FCOE
 391         /* Reprogam FCoE hardware offloads when the traffic class
 392          * FCoE is using changes. This happens if the APP info
 393          * changes or the up2tc mapping is updated.
 394          */
 395         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
 396                 struct dcb_app app = {
 397                                       .selector = DCB_APP_IDTYPE_ETHTYPE,
 398                                       .protocol = ETH_P_FCOE,
 399                                      };
 400                 u8 up = dcb_getapp(netdev, &app);
 401
 402                 adapter->fcoe.up = ffs(up) - 1;
 403                 ixgbe_dcbnl_devreset(netdev);
 404                 ret = DCB_HW_CHG_RST;
 405         }
 406 #endif
 407
 408         adapter->dcb_set_bitmap = 0x00;
 409         return ret;
 410 }
 411
 412 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 413 {
 414         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 415
 416         switch (capid) {
 417         case DCB_CAP_ATTR_PG:
 418                 *cap = true;
 419                 break;
 420         case DCB_CAP_ATTR_PFC:
 421                 *cap = true;
 422                 break;
 423         case DCB_CAP_ATTR_UP2TC:
 424                 *cap = false;
 425                 break;
 426         case DCB_CAP_ATTR_PG_TCS:
 427                 *cap = 0x80;
 428                 break;
 429         case DCB_CAP_ATTR_PFC_TCS:
 430                 *cap = 0x80;
 431                 break;
 432         case DCB_CAP_ATTR_GSP:
 433                 *cap = true;
 434                 break;
 435         case DCB_CAP_ATTR_BCN:
 436                 *cap = false;
 437                 break;
 438         case DCB_CAP_ATTR_DCBX:
 439                 *cap = adapter->dcbx_cap;
 440                 break;
 441         default:
 442                 *cap = false;
 443                 break;
 444         }
 445
 446         return 0;
 447 }
 448
 449 static int ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 450 {
 451         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 452
 453         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 454                 switch (tcid) {
 455                 case DCB_NUMTCS_ATTR_PG:
 456                         *num = adapter->dcb_cfg.num_tcs.pg_tcs;
 457                         break;
 458                 case DCB_NUMTCS_ATTR_PFC:
 459                         *num = adapter->dcb_cfg.num_tcs.pfc_tcs;
 460                         break;
 461                 default:
 462                         return -EINVAL;
 463                         break;
 464                 }
 465         } else {
 466                 return -EINVAL;
 467         }
 468
 469         return 0;
 470 }
 471
 472 static int ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 473 {
 474         return -EINVAL;
 475 }
 476
 477 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 478 {
 479         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 480
 481         return adapter->dcb_cfg.pfc_mode_enable;
 482 }
 483
 484 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 485 {
 486         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 487
 488         adapter->temp_dcb_cfg.pfc_mode_enable = state;
 489 }
 490
 491 /**
 492  * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
 493  * @netdev : the corresponding netdev
 494  * @idtype : identifies the id as ether type or TCP/UDP port number
 495  * @id: id is either ether type or TCP/UDP port number
 496  *
 497  * Returns : on success, returns a non-zero 802.1p user priority bitmap
 498  * otherwise returns 0 as the invalid user priority bitmap to indicate an
 499  * error.
 500  */
 501 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
 502 {
 503         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 504         struct dcb_app app = {
 505                                 .selector = idtype,
 506                                 .protocol = id,
 507                              };
 508
 509         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 510                 return 0;
 511
 512         return dcb_getapp(netdev, &app);
 513 }
 514
 515 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
 516                                    struct ieee_ets *ets)
 517 {
 518         struct ixgbe_adapter *adapter = netdev_priv(dev);
 519         struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
 520
 521         ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;
 522
 523         /* No IEEE PFC settings available */
 524         if (!my_ets)
 525                 return 0;
 526
 527         ets->cbs = my_ets->cbs;
 528         memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
 529         memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
 530         memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
 531         memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
 532         return 0;
 533 }
 534
 535 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
 536                                    struct ieee_ets *ets)
 537 {
 538         struct ixgbe_adapter *adapter = netdev_priv(dev);
 539         int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
 540         int i, err = 0;
 541         __u8 max_tc = 0;
 542         __u8 map_chg = 0;
 543
 544         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 545                 return -EINVAL;
 546
 547         if (!adapter->ixgbe_ieee_ets) {
 548                 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
 549                                                   GFP_KERNEL);
 550                 if (!adapter->ixgbe_ieee_ets)
 551                         return -ENOMEM;
 552
 553                 /* initialize UP2TC mappings to invalid value */
 554                 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 555                         adapter->ixgbe_ieee_ets->prio_tc[i] =
 556                                 IEEE_8021QAZ_MAX_TCS;
 557                 /* if possible update UP2TC mappings from HW */
 558                 ixgbe_dcb_read_rtrup2tc(&adapter->hw,
 559                                         adapter->ixgbe_ieee_ets->prio_tc);
 560         }
 561
 562         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
 563                 if (ets->prio_tc[i] > max_tc)
 564                         max_tc = ets->prio_tc[i];
 565                 if (ets->prio_tc[i] != adapter->ixgbe_ieee_ets->prio_tc[i])
 566                         map_chg = 1;
 567         }
 568
 569         memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
 570
 571         if (max_tc)
 572                 max_tc++;
 573
 574         if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
 575                 return -EINVAL;
 576
 577         if (max_tc != netdev_get_num_tc(dev))
 578                 err = ixgbe_setup_tc(dev, max_tc);
 579         else if (map_chg)
 580                 ixgbe_dcbnl_devreset(dev);
 581
 582         if (err)
 583                 goto err_out;
 584
 585         err = ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
 586 err_out:
 587         return err;
 588 }
 589
 590 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
 591                                    struct ieee_pfc *pfc)
 592 {
 593         struct ixgbe_adapter *adapter = netdev_priv(dev);
 594         struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
 595         int i;
 596
 597         pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
 598
 599         /* No IEEE PFC settings available */
 600         if (!my_pfc)
 601                 return 0;
 602
 603         pfc->pfc_en = my_pfc->pfc_en;
 604         pfc->mbc = my_pfc->mbc;
 605         pfc->delay = my_pfc->delay;
 606
 607         for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
 608                 pfc->requests[i] = adapter->stats.pxoffrxc[i];
 609                 pfc->indications[i] = adapter->stats.pxofftxc[i];
 610         }
 611
 612         return 0;
 613 }
 614
 615 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
 616                                    struct ieee_pfc *pfc)
 617 {
 618         struct ixgbe_adapter *adapter = netdev_priv(dev);
 619         struct ixgbe_hw *hw = &adapter->hw;
 620         u8 *prio_tc;
 621         int err;
 622
 623         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 624                 return -EINVAL;
 625
 626         if (!adapter->ixgbe_ieee_pfc) {
 627                 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
 628                                                   GFP_KERNEL);
 629                 if (!adapter->ixgbe_ieee_pfc)
 630                         return -ENOMEM;
 631         }
 632
 633         prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
 634         memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
 635
 636         /* Enable link flow control parameters if PFC is disabled */
 637         if (pfc->pfc_en)
 638                 err = ixgbe_dcb_hw_pfc_config(hw, pfc->pfc_en, prio_tc);
 639         else
 640                 err = hw->mac.ops.fc_enable(hw);
 641
 642         ixgbe_set_rx_drop_en(adapter);
 643
 644         return err;
 645 }
 646
 647 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
 648                                    struct dcb_app *app)
 649 {
 650         struct ixgbe_adapter *adapter = netdev_priv(dev);
 651         int err = -EINVAL;
 652
 653         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 654                 return err;
 655
 656         err = dcb_ieee_setapp(dev, app);
 657         if (err)
 658                 return err;
 659
 660 #ifdef IXGBE_FCOE
 661         if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 662             app->protocol == ETH_P_FCOE) {
 663                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 664
 665                 if (app_mask & (1 << adapter->fcoe.up))
 666                         return err;
 667
 668                 adapter->fcoe.up = app->priority;
 669                 ixgbe_dcbnl_devreset(dev);
 670         }
 671 #endif
 672
 673         /* VF devices should use default UP when available */
 674         if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 675             app->protocol == 0) {
 676                 int vf;
 677
 678                 adapter->default_up = app->priority;
 679
 680                 for (vf = 0; vf < adapter->num_vfs; vf++) {
 681                         struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
 682
 683                         if (!vfinfo->pf_qos)
 684                                 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
 685                                                 app->priority, vf);
 686                 }
 687         }
 688
 689         return 0;
 690 }
 691
 692 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
 693                                    struct dcb_app *app)
 694 {
 695         struct ixgbe_adapter *adapter = netdev_priv(dev);
 696         int err;
 697
 698         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 699                 return -EINVAL;
 700
 701         err = dcb_ieee_delapp(dev, app);
 702
 703 #ifdef IXGBE_FCOE
 704         if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 705             app->protocol == ETH_P_FCOE) {
 706                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 707
 708                 if (app_mask & (1 << adapter->fcoe.up))
 709                         return err;
 710
 711                 adapter->fcoe.up = app_mask ?
 712                                    ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
 713                 ixgbe_dcbnl_devreset(dev);
 714         }
 715 #endif
 716         /* IF default priority is being removed clear VF default UP */
 717         if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 718             app->protocol == 0 && adapter->default_up == app->priority) {
 719                 int vf;
 720                 long unsigned int app_mask = dcb_ieee_getapp_mask(dev, app);
 721                 int qos = app_mask ? find_first_bit(&app_mask, 8) : 0;
 722
 723                 adapter->default_up = qos;
 724
 725                 for (vf = 0; vf < adapter->num_vfs; vf++) {
 726                         struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
 727
 728                         if (!vfinfo->pf_qos)
 729                                 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
 730                                                 qos, vf);
 731                 }
 732         }
 733
 734         return err;
 735 }
 736
 737 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
 738 {
 739         struct ixgbe_adapter *adapter = netdev_priv(dev);
 740         return adapter->dcbx_cap;
 741 }
 742
 743 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
 744 {
 745         struct ixgbe_adapter *adapter = netdev_priv(dev);
 746         struct ieee_ets ets = {0};
 747         struct ieee_pfc pfc = {0};
 748         int err = 0;
 749
 750         /* no support for LLD_MANAGED modes or CEE+IEEE */
 751         if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
 752             ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
 753             !(mode & DCB_CAP_DCBX_HOST))
 754                 return 1;
 755
 756         if (mode == adapter->dcbx_cap)
 757                 return 0;
 758
 759         adapter->dcbx_cap = mode;
 760
 761         /* ETS and PFC defaults */
 762         ets.ets_cap = 8;
 763         pfc.pfc_cap = 8;
 764
 765         if (mode & DCB_CAP_DCBX_VER_IEEE) {
 766                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 767                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 768         } else if (mode & DCB_CAP_DCBX_VER_CEE) {
 769                 u8 mask = BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG;
 770
 771                 adapter->dcb_set_bitmap |= mask;
 772                 ixgbe_dcbnl_set_all(dev);
 773         } else {
 774                 /* Drop into single TC mode strict priority as this
 775                  * indicates CEE and IEEE versions are disabled
 776                  */
 777                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 778                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 779                 err = ixgbe_setup_tc(dev, 0);
 780         }
 781
 782         return err ? 1 : 0;
 783 }
 784
 785 const struct dcbnl_rtnl_ops dcbnl_ops = {
 786         .ieee_getets    = ixgbe_dcbnl_ieee_getets,
 787         .ieee_setets    = ixgbe_dcbnl_ieee_setets,
 788         .ieee_getpfc    = ixgbe_dcbnl_ieee_getpfc,
 789         .ieee_setpfc    = ixgbe_dcbnl_ieee_setpfc,
 790         .ieee_setapp    = ixgbe_dcbnl_ieee_setapp,
 791         .ieee_delapp    = ixgbe_dcbnl_ieee_delapp,
 792         .getstate       = ixgbe_dcbnl_get_state,
 793         .setstate       = ixgbe_dcbnl_set_state,
 794         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 795         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 796         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 797         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 798         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 799         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 800         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 801         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 802         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 803         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 804         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 805         .setall         = ixgbe_dcbnl_set_all,
 806         .getcap         = ixgbe_dcbnl_getcap,
 807         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 808         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 809         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 810         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 811         .getapp         = ixgbe_dcbnl_getapp,
 812         .getdcbx        = ixgbe_dcbnl_getdcbx,
 813         .setdcbx        = ixgbe_dcbnl_setdcbx,
 814 };