drivers/net/ethernet/mellanox/mlx4/en_netdev.c

   1 /*
   2  * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/bpf.h>
  35 #include <linux/etherdevice.h>
  36 #include <linux/tcp.h>
  37 #include <linux/if_vlan.h>
  38 #include <linux/delay.h>
  39 #include <linux/slab.h>
  40 #include <linux/hash.h>
  41 #include <net/ip.h>
  42 #include <net/vxlan.h>
  43 #include <net/devlink.h>
  44
  45 #include <linux/mlx4/driver.h>
  46 #include <linux/mlx4/device.h>
  47 #include <linux/mlx4/cmd.h>
  48 #include <linux/mlx4/cq.h>
  49
  50 #include "mlx4_en.h"
  51 #include "en_port.h"
  52
  53 #define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \
  54                                 XDP_PACKET_HEADROOM -                       \
  55                                 SKB_DATA_ALIGN(sizeof(struct skb_shared_info))))
  56
  57 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  58 {
  59         struct mlx4_en_priv *priv = netdev_priv(dev);
  60         int i;
  61         unsigned int offset = 0;
  62
  63         if (up && up != MLX4_EN_NUM_UP_HIGH)
  64                 return -EINVAL;
  65
  66         netdev_set_num_tc(dev, up);
  67         netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
  68         /* Partition Tx queues evenly amongst UP's */
  69         for (i = 0; i < up; i++) {
  70                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  71                 offset += priv->num_tx_rings_p_up;
  72         }
  73
  74 #ifdef CONFIG_MLX4_EN_DCB
  75         if (!mlx4_is_slave(priv->mdev->dev)) {
  76                 if (up) {
  77                         if (priv->dcbx_cap)
  78                                 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
  79                 } else {
  80                         priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
  81                         priv->cee_config.pfc_state = false;
  82                 }
  83         }
  84 #endif /* CONFIG_MLX4_EN_DCB */
  85
  86         return 0;
  87 }
  88
  89 int mlx4_en_alloc_tx_queue_per_tc(struct net_device *dev, u8 tc)
  90 {
  91         struct mlx4_en_priv *priv = netdev_priv(dev);
  92         struct mlx4_en_dev *mdev = priv->mdev;
  93         struct mlx4_en_port_profile new_prof;
  94         struct mlx4_en_priv *tmp;
  95         int total_count;
  96         int port_up = 0;
  97         int err = 0;
  98
  99         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
 100         if (!tmp)
 101                 return -ENOMEM;
 102
 103         mutex_lock(&mdev->state_lock);
 104         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
 105         new_prof.num_up = (tc == 0) ? MLX4_EN_NUM_UP_LOW :
 106                                       MLX4_EN_NUM_UP_HIGH;
 107         new_prof.tx_ring_num[TX] = new_prof.num_tx_rings_p_up *
 108                                    new_prof.num_up;
 109         total_count = new_prof.tx_ring_num[TX] + new_prof.tx_ring_num[TX_XDP];
 110         if (total_count > MAX_TX_RINGS) {
 111                 err = -EINVAL;
 112                 en_err(priv,
 113                        "Total number of TX and XDP rings (%d) exceeds the maximum supported (%d)\n",
 114                        total_count, MAX_TX_RINGS);
 115                 goto out;
 116         }
 117         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
 118         if (err)
 119                 goto out;
 120
 121         if (priv->port_up) {
 122                 port_up = 1;
 123                 mlx4_en_stop_port(dev, 1);
 124         }
 125
 126         mlx4_en_safe_replace_resources(priv, tmp);
 127         if (port_up) {
 128                 err = mlx4_en_start_port(dev);
 129                 if (err) {
 130                         en_err(priv, "Failed starting port for setup TC\n");
 131                         goto out;
 132                 }
 133         }
 134
 135         err = mlx4_en_setup_tc(dev, tc);
 136 out:
 137         mutex_unlock(&mdev->state_lock);
 138         kfree(tmp);
 139         return err;
 140 }
 141
 142 static int __mlx4_en_setup_tc(struct net_device *dev, enum tc_setup_type type,
 143                               void *type_data)
 144 {
 145         struct tc_mqprio_qopt *mqprio = type_data;
 146
 147         if (type != TC_SETUP_QDISC_MQPRIO)
 148                 return -EOPNOTSUPP;
 149
 150         if (mqprio->num_tc && mqprio->num_tc != MLX4_EN_NUM_UP_HIGH)
 151                 return -EINVAL;
 152
 153         mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
 154
 155         return mlx4_en_alloc_tx_queue_per_tc(dev, mqprio->num_tc);
 156 }
 157
 158 #ifdef CONFIG_RFS_ACCEL
 159
 160 struct mlx4_en_filter {
 161         struct list_head next;
 162         struct work_struct work;
 163
 164         u8     ip_proto;
 165         __be32 src_ip;
 166         __be32 dst_ip;
 167         __be16 src_port;
 168         __be16 dst_port;
 169
 170         int rxq_index;
 171         struct mlx4_en_priv *priv;
 172         u32 flow_id;                    /* RFS infrastructure id */
 173         int id;                         /* mlx4_en driver id */
 174         u64 reg_id;                     /* Flow steering API id */
 175         u8 activated;                   /* Used to prevent expiry before filter
 176                                          * is attached
 177                                          */
 178         struct hlist_node filter_chain;
 179 };
 180
 181 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 182
 183 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 184 {
 185         switch (ip_proto) {
 186         case IPPROTO_UDP:
 187                 return MLX4_NET_TRANS_RULE_ID_UDP;
 188         case IPPROTO_TCP:
 189                 return MLX4_NET_TRANS_RULE_ID_TCP;
 190         default:
 191                 return MLX4_NET_TRANS_RULE_NUM;
 192         }
 193 };
 194
 195 /* Must not acquire state_lock, as its corresponding work_sync
 196  * is done under it.
 197  */
 198 static void mlx4_en_filter_work(struct work_struct *work)
 199 {
 200         struct mlx4_en_filter *filter = container_of(work,
 201                                                      struct mlx4_en_filter,
 202                                                      work);
 203         struct mlx4_en_priv *priv = filter->priv;
 204         struct mlx4_spec_list spec_tcp_udp = {
 205                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 206                 {
 207                         .tcp_udp = {
 208                                 .dst_port = filter->dst_port,
 209                                 .dst_port_msk = (__force __be16)-1,
 210                                 .src_port = filter->src_port,
 211                                 .src_port_msk = (__force __be16)-1,
 212                         },
 213                 },
 214         };
 215         struct mlx4_spec_list spec_ip = {
 216                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 217                 {
 218                         .ipv4 = {
 219                                 .dst_ip = filter->dst_ip,
 220                                 .dst_ip_msk = (__force __be32)-1,
 221                                 .src_ip = filter->src_ip,
 222                                 .src_ip_msk = (__force __be32)-1,
 223                         },
 224                 },
 225         };
 226         struct mlx4_spec_list spec_eth = {
 227                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 228         };
 229         struct mlx4_net_trans_rule rule = {
 230                 .list = LIST_HEAD_INIT(rule.list),
 231                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 232                 .exclusive = 1,
 233                 .allow_loopback = 1,
 234                 .promisc_mode = MLX4_FS_REGULAR,
 235                 .port = priv->port,
 236                 .priority = MLX4_DOMAIN_RFS,
 237         };
 238         int rc;
 239         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 240
 241         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 242                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 243                         filter->ip_proto);
 244                 goto ignore;
 245         }
 246         list_add_tail(&spec_eth.list, &rule.list);
 247         list_add_tail(&spec_ip.list, &rule.list);
 248         list_add_tail(&spec_tcp_udp.list, &rule.list);
 249
 250         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 251         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 252         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 253
 254         filter->activated = 0;
 255
 256         if (filter->reg_id) {
 257                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 258                 if (rc && rc != -ENOENT)
 259                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 260         }
 261
 262         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 263         if (rc)
 264                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 265
 266 ignore:
 267         mlx4_en_filter_rfs_expire(priv);
 268
 269         filter->activated = 1;
 270 }
 271
 272 static inline struct hlist_head *
 273 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 274                    __be16 src_port, __be16 dst_port)
 275 {
 276         unsigned long l;
 277         int bucket_idx;
 278
 279         l = (__force unsigned long)src_port |
 280             ((__force unsigned long)dst_port << 2);
 281         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 282
 283         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 284
 285         return &priv->filter_hash[bucket_idx];
 286 }
 287
 288 static struct mlx4_en_filter *
 289 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 290                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 291                      __be16 dst_port, u32 flow_id)
 292 {
 293         struct mlx4_en_filter *filter = NULL;
 294
 295         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 296         if (!filter)
 297                 return NULL;
 298
 299         filter->priv = priv;
 300         filter->rxq_index = rxq_index;
 301         INIT_WORK(&filter->work, mlx4_en_filter_work);
 302
 303         filter->src_ip = src_ip;
 304         filter->dst_ip = dst_ip;
 305         filter->ip_proto = ip_proto;
 306         filter->src_port = src_port;
 307         filter->dst_port = dst_port;
 308
 309         filter->flow_id = flow_id;
 310
 311         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 312
 313         list_add_tail(&filter->next, &priv->filters);
 314         hlist_add_head(&filter->filter_chain,
 315                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 316                                           dst_port));
 317
 318         return filter;
 319 }
 320
 321 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 322 {
 323         struct mlx4_en_priv *priv = filter->priv;
 324         int rc;
 325
 326         list_del(&filter->next);
 327
 328         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 329         if (rc && rc != -ENOENT)
 330                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 331
 332         kfree(filter);
 333 }
 334
 335 static inline struct mlx4_en_filter *
 336 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 337                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 338 {
 339         struct mlx4_en_filter *filter;
 340         struct mlx4_en_filter *ret = NULL;
 341
 342         hlist_for_each_entry(filter,
 343                              filter_hash_bucket(priv, src_ip, dst_ip,
 344                                                 src_port, dst_port),
 345                              filter_chain) {
 346                 if (filter->src_ip == src_ip &&
 347                     filter->dst_ip == dst_ip &&
 348                     filter->ip_proto == ip_proto &&
 349                     filter->src_port == src_port &&
 350                     filter->dst_port == dst_port) {
 351                         ret = filter;
 352                         break;
 353                 }
 354         }
 355
 356         return ret;
 357 }
 358
 359 static int
 360 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 361                    u16 rxq_index, u32 flow_id)
 362 {
 363         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 364         struct mlx4_en_filter *filter;
 365         const struct iphdr *ip;
 366         const __be16 *ports;
 367         u8 ip_proto;
 368         __be32 src_ip;
 369         __be32 dst_ip;
 370         __be16 src_port;
 371         __be16 dst_port;
 372         int nhoff = skb_network_offset(skb);
 373         int ret = 0;
 374
 375         if (skb->protocol != htons(ETH_P_IP))
 376                 return -EPROTONOSUPPORT;
 377
 378         ip = (const struct iphdr *)(skb->data + nhoff);
 379         if (ip_is_fragment(ip))
 380                 return -EPROTONOSUPPORT;
 381
 382         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 383                 return -EPROTONOSUPPORT;
 384         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 385
 386         ip_proto = ip->protocol;
 387         src_ip = ip->saddr;
 388         dst_ip = ip->daddr;
 389         src_port = ports[0];
 390         dst_port = ports[1];
 391
 392         spin_lock_bh(&priv->filters_lock);
 393         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 394                                      src_port, dst_port);
 395         if (filter) {
 396                 if (filter->rxq_index == rxq_index)
 397                         goto out;
 398
 399                 filter->rxq_index = rxq_index;
 400         } else {
 401                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 402                                               src_ip, dst_ip, ip_proto,
 403                                               src_port, dst_port, flow_id);
 404                 if (!filter) {
 405                         ret = -ENOMEM;
 406                         goto err;
 407                 }
 408         }
 409
 410         queue_work(priv->mdev->workqueue, &filter->work);
 411
 412 out:
 413         ret = filter->id;
 414 err:
 415         spin_unlock_bh(&priv->filters_lock);
 416
 417         return ret;
 418 }
 419
 420 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 421 {
 422         struct mlx4_en_filter *filter, *tmp;
 423         LIST_HEAD(del_list);
 424
 425         spin_lock_bh(&priv->filters_lock);
 426         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 427                 list_move(&filter->next, &del_list);
 428                 hlist_del(&filter->filter_chain);
 429         }
 430         spin_unlock_bh(&priv->filters_lock);
 431
 432         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 433                 cancel_work_sync(&filter->work);
 434                 mlx4_en_filter_free(filter);
 435         }
 436 }
 437
 438 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 439 {
 440         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 441         LIST_HEAD(del_list);
 442         int i = 0;
 443
 444         spin_lock_bh(&priv->filters_lock);
 445         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 446                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 447                         break;
 448
 449                 if (filter->activated &&
 450                     !work_pending(&filter->work) &&
 451                     rps_may_expire_flow(priv->dev,
 452                                         filter->rxq_index, filter->flow_id,
 453                                         filter->id)) {
 454                         list_move(&filter->next, &del_list);
 455                         hlist_del(&filter->filter_chain);
 456                 } else
 457                         last_filter = filter;
 458
 459                 i++;
 460         }
 461
 462         if (last_filter && (&last_filter->next != priv->filters.next))
 463                 list_move(&priv->filters, &last_filter->next);
 464
 465         spin_unlock_bh(&priv->filters_lock);
 466
 467         list_for_each_entry_safe(filter, tmp, &del_list, next)
 468                 mlx4_en_filter_free(filter);
 469 }
 470 #endif
 471
 472 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 473                                    __be16 proto, u16 vid)
 474 {
 475         struct mlx4_en_priv *priv = netdev_priv(dev);
 476         struct mlx4_en_dev *mdev = priv->mdev;
 477         int err;
 478         int idx;
 479
 480         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 481
 482         set_bit(vid, priv->active_vlans);
 483
 484         /* Add VID to port VLAN filter */
 485         mutex_lock(&mdev->state_lock);
 486         if (mdev->device_up && priv->port_up) {
 487                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 488                 if (err) {
 489                         en_err(priv, "Failed configuring VLAN filter\n");
 490                         goto out;
 491                 }
 492         }
 493         err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
 494         if (err)
 495                 en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
 496
 497 out:
 498         mutex_unlock(&mdev->state_lock);
 499         return err;
 500 }
 501
 502 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 503                                     __be16 proto, u16 vid)
 504 {
 505         struct mlx4_en_priv *priv = netdev_priv(dev);
 506         struct mlx4_en_dev *mdev = priv->mdev;
 507         int err = 0;
 508
 509         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 510
 511         clear_bit(vid, priv->active_vlans);
 512
 513         /* Remove VID from port VLAN filter */
 514         mutex_lock(&mdev->state_lock);
 515         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 516
 517         if (mdev->device_up && priv->port_up) {
 518                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 519                 if (err)
 520                         en_err(priv, "Failed configuring VLAN filter\n");
 521         }
 522         mutex_unlock(&mdev->state_lock);
 523
 524         return err;
 525 }
 526
 527 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 528 {
 529         int i;
 530         for (i = ETH_ALEN - 1; i >= 0; --i) {
 531                 dst_mac[i] = src_mac & 0xff;
 532                 src_mac >>= 8;
 533         }
 534         memset(&dst_mac[ETH_ALEN], 0, 2);
 535 }
 536
 537
 538 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 539                                     int qpn, u64 *reg_id)
 540 {
 541         int err;
 542
 543         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 544             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 545                 return 0; /* do nothing */
 546
 547         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 548                                     MLX4_DOMAIN_NIC, reg_id);
 549         if (err) {
 550                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 551                 return err;
 552         }
 553         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 554         return 0;
 555 }
 556
 557
 558 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 559                                 unsigned char *mac, int *qpn, u64 *reg_id)
 560 {
 561         struct mlx4_en_dev *mdev = priv->mdev;
 562         struct mlx4_dev *dev = mdev->dev;
 563         int err;
 564
 565         switch (dev->caps.steering_mode) {
 566         case MLX4_STEERING_MODE_B0: {
 567                 struct mlx4_qp qp;
 568                 u8 gid[16] = {0};
 569
 570                 qp.qpn = *qpn;
 571                 memcpy(&gid[10], mac, ETH_ALEN);
 572                 gid[5] = priv->port;
 573
 574                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 575                 break;
 576         }
 577         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 578                 struct mlx4_spec_list spec_eth = { {NULL} };
 579                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 580
 581                 struct mlx4_net_trans_rule rule = {
 582                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 583                         .exclusive = 0,
 584                         .allow_loopback = 1,
 585                         .promisc_mode = MLX4_FS_REGULAR,
 586                         .priority = MLX4_DOMAIN_NIC,
 587                 };
 588
 589                 rule.port = priv->port;
 590                 rule.qpn = *qpn;
 591                 INIT_LIST_HEAD(&rule.list);
 592
 593                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 594                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 595                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 596                 list_add_tail(&spec_eth.list, &rule.list);
 597
 598                 err = mlx4_flow_attach(dev, &rule, reg_id);
 599                 break;
 600         }
 601         default:
 602                 return -EINVAL;
 603         }
 604         if (err)
 605                 en_warn(priv, "Failed Attaching Unicast\n");
 606
 607         return err;
 608 }
 609
 610 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 611                                      unsigned char *mac, int qpn, u64 reg_id)
 612 {
 613         struct mlx4_en_dev *mdev = priv->mdev;
 614         struct mlx4_dev *dev = mdev->dev;
 615
 616         switch (dev->caps.steering_mode) {
 617         case MLX4_STEERING_MODE_B0: {
 618                 struct mlx4_qp qp;
 619                 u8 gid[16] = {0};
 620
 621                 qp.qpn = qpn;
 622                 memcpy(&gid[10], mac, ETH_ALEN);
 623                 gid[5] = priv->port;
 624
 625                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 626                 break;
 627         }
 628         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 629                 mlx4_flow_detach(dev, reg_id);
 630                 break;
 631         }
 632         default:
 633                 en_err(priv, "Invalid steering mode.\n");
 634         }
 635 }
 636
 637 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 638 {
 639         struct mlx4_en_dev *mdev = priv->mdev;
 640         struct mlx4_dev *dev = mdev->dev;
 641         int index = 0;
 642         int err = 0;
 643         int *qpn = &priv->base_qpn;
 644         u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 645
 646         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 647                priv->dev->dev_addr);
 648         index = mlx4_register_mac(dev, priv->port, mac);
 649         if (index < 0) {
 650                 err = index;
 651                 en_err(priv, "Failed adding MAC: %pM\n",
 652                        priv->dev->dev_addr);
 653                 return err;
 654         }
 655
 656         en_info(priv, "Steering Mode %d\n", dev->caps.steering_mode);
 657
 658         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 659                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 660                 *qpn = base_qpn + index;
 661                 return 0;
 662         }
 663
 664         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP,
 665                                     MLX4_RES_USAGE_DRIVER);
 666         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 667         if (err) {
 668                 en_err(priv, "Failed to reserve qp for mac registration\n");
 669                 mlx4_unregister_mac(dev, priv->port, mac);
 670                 return err;
 671         }
 672
 673         return 0;
 674 }
 675
 676 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 677 {
 678         struct mlx4_en_dev *mdev = priv->mdev;
 679         struct mlx4_dev *dev = mdev->dev;
 680         int qpn = priv->base_qpn;
 681
 682         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 683                 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 684                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 685                        priv->dev->dev_addr);
 686                 mlx4_unregister_mac(dev, priv->port, mac);
 687         } else {
 688                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 689                        priv->port, qpn);
 690                 mlx4_qp_release_range(dev, qpn, 1);
 691                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 692         }
 693 }
 694
 695 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 696                                unsigned char *new_mac, unsigned char *prev_mac)
 697 {
 698         struct mlx4_en_dev *mdev = priv->mdev;
 699         struct mlx4_dev *dev = mdev->dev;
 700         int err = 0;
 701         u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 702
 703         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 704                 struct hlist_head *bucket;
 705                 unsigned int mac_hash;
 706                 struct mlx4_mac_entry *entry;
 707                 struct hlist_node *tmp;
 708                 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 709
 710                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 711                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 712                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 713                                 mlx4_en_uc_steer_release(priv, entry->mac,
 714                                                          qpn, entry->reg_id);
 715                                 mlx4_unregister_mac(dev, priv->port,
 716                                                     prev_mac_u64);
 717                                 hlist_del_rcu(&entry->hlist);
 718                                 synchronize_rcu();
 719                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 720                                 entry->reg_id = 0;
 721                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 722                                 hlist_add_head_rcu(&entry->hlist,
 723                                                    &priv->mac_hash[mac_hash]);
 724                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 725                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 726                                                            &qpn,
 727                                                            &entry->reg_id);
 728                                 if (err)
 729                                         return err;
 730                                 if (priv->tunnel_reg_id) {
 731                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 732                                         priv->tunnel_reg_id = 0;
 733                                 }
 734                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 735                                                                &priv->tunnel_reg_id);
 736                                 return err;
 737                         }
 738                 }
 739                 return -EINVAL;
 740         }
 741
 742         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 743 }
 744
 745 static void mlx4_en_update_user_mac(struct mlx4_en_priv *priv,
 746                                     unsigned char new_mac[ETH_ALEN + 2])
 747 {
 748         struct mlx4_en_dev *mdev = priv->mdev;
 749         int err;
 750
 751         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_USER_MAC_EN))
 752                 return;
 753
 754         err = mlx4_SET_PORT_user_mac(mdev->dev, priv->port, new_mac);
 755         if (err)
 756                 en_err(priv, "Failed to pass user MAC(%pM) to Firmware for port %d, with error %d\n",
 757                        new_mac, priv->port, err);
 758 }
 759
 760 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 761                               unsigned char new_mac[ETH_ALEN + 2])
 762 {
 763         int err = 0;
 764
 765         if (priv->port_up) {
 766                 /* Remove old MAC and insert the new one */
 767                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 768                                           new_mac, priv->current_mac);
 769                 if (err)
 770                         en_err(priv, "Failed changing HW MAC address\n");
 771         } else
 772                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 773
 774         if (!err)
 775                 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 776
 777         return err;
 778 }
 779
 780 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 781 {
 782         struct mlx4_en_priv *priv = netdev_priv(dev);
 783         struct mlx4_en_dev *mdev = priv->mdev;
 784         struct sockaddr *saddr = addr;
 785         unsigned char new_mac[ETH_ALEN + 2];
 786         int err;
 787
 788         if (!is_valid_ether_addr(saddr->sa_data))
 789                 return -EADDRNOTAVAIL;
 790
 791         mutex_lock(&mdev->state_lock);
 792         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 793         err = mlx4_en_do_set_mac(priv, new_mac);
 794         if (err)
 795                 goto out;
 796
 797         memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 798         mlx4_en_update_user_mac(priv, new_mac);
 799 out:
 800         mutex_unlock(&mdev->state_lock);
 801
 802         return err;
 803 }
 804
 805 static void mlx4_en_clear_list(struct net_device *dev)
 806 {
 807         struct mlx4_en_priv *priv = netdev_priv(dev);
 808         struct mlx4_en_mc_list *tmp, *mc_to_del;
 809
 810         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 811                 list_del(&mc_to_del->list);
 812                 kfree(mc_to_del);
 813         }
 814 }
 815
 816 static void mlx4_en_cache_mclist(struct net_device *dev)
 817 {
 818         struct mlx4_en_priv *priv = netdev_priv(dev);
 819         struct netdev_hw_addr *ha;
 820         struct mlx4_en_mc_list *tmp;
 821
 822         mlx4_en_clear_list(dev);
 823         netdev_for_each_mc_addr(ha, dev) {
 824                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 825                 if (!tmp) {
 826                         mlx4_en_clear_list(dev);
 827                         return;
 828                 }
 829                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 830                 list_add_tail(&tmp->list, &priv->mc_list);
 831         }
 832 }
 833
 834 static void update_mclist_flags(struct mlx4_en_priv *priv,
 835                                 struct list_head *dst,
 836                                 struct list_head *src)
 837 {
 838         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 839         bool found;
 840
 841         /* Find all the entries that should be removed from dst,
 842          * These are the entries that are not found in src
 843          */
 844         list_for_each_entry(dst_tmp, dst, list) {
 845                 found = false;
 846                 list_for_each_entry(src_tmp, src, list) {
 847                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 848                                 found = true;
 849                                 break;
 850                         }
 851                 }
 852                 if (!found)
 853                         dst_tmp->action = MCLIST_REM;
 854         }
 855
 856         /* Add entries that exist in src but not in dst
 857          * mark them as need to add
 858          */
 859         list_for_each_entry(src_tmp, src, list) {
 860                 found = false;
 861                 list_for_each_entry(dst_tmp, dst, list) {
 862                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 863                                 dst_tmp->action = MCLIST_NONE;
 864                                 found = true;
 865                                 break;
 866                         }
 867                 }
 868                 if (!found) {
 869                         new_mc = kmemdup(src_tmp,
 870                                          sizeof(struct mlx4_en_mc_list),
 871                                          GFP_KERNEL);
 872                         if (!new_mc)
 873                                 return;
 874
 875                         new_mc->action = MCLIST_ADD;
 876                         list_add_tail(&new_mc->list, dst);
 877                 }
 878         }
 879 }
 880
 881 static void mlx4_en_set_rx_mode(struct net_device *dev)
 882 {
 883         struct mlx4_en_priv *priv = netdev_priv(dev);
 884
 885         if (!priv->port_up)
 886                 return;
 887
 888         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 889 }
 890
 891 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 892                                      struct mlx4_en_dev *mdev)
 893 {
 894         int err = 0;
 895
 896         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 897                 if (netif_msg_rx_status(priv))
 898                         en_warn(priv, "Entering promiscuous mode\n");
 899                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 900
 901                 /* Enable promiscouos mode */
 902                 switch (mdev->dev->caps.steering_mode) {
 903                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 904                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 905                                                           priv->port,
 906                                                           priv->base_qpn,
 907                                                           MLX4_FS_ALL_DEFAULT);
 908                         if (err)
 909                                 en_err(priv, "Failed enabling promiscuous mode\n");
 910                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 911                         break;
 912
 913                 case MLX4_STEERING_MODE_B0:
 914                         err = mlx4_unicast_promisc_add(mdev->dev,
 915                                                        priv->base_qpn,
 916                                                        priv->port);
 917                         if (err)
 918                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 919
 920                         /* Add the default qp number as multicast
 921                          * promisc
 922                          */
 923                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 924                                 err = mlx4_multicast_promisc_add(mdev->dev,
 925                                                                  priv->base_qpn,
 926                                                                  priv->port);
 927                                 if (err)
 928                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 929                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 930                         }
 931                         break;
 932
 933                 case MLX4_STEERING_MODE_A0:
 934                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 935                                                      priv->port,
 936                                                      priv->base_qpn,
 937                                                      1);
 938                         if (err)
 939                                 en_err(priv, "Failed enabling promiscuous mode\n");
 940                         break;
 941                 }
 942
 943                 /* Disable port multicast filter (unconditionally) */
 944                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 945                                           0, MLX4_MCAST_DISABLE);
 946                 if (err)
 947                         en_err(priv, "Failed disabling multicast filter\n");
 948         }
 949 }
 950
 951 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 952                                        struct mlx4_en_dev *mdev)
 953 {
 954         int err = 0;
 955
 956         if (netif_msg_rx_status(priv))
 957                 en_warn(priv, "Leaving promiscuous mode\n");
 958         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 959
 960         /* Disable promiscouos mode */
 961         switch (mdev->dev->caps.steering_mode) {
 962         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 963                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 964                                                      priv->port,
 965                                                      MLX4_FS_ALL_DEFAULT);
 966                 if (err)
 967                         en_err(priv, "Failed disabling promiscuous mode\n");
 968                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 969                 break;
 970
 971         case MLX4_STEERING_MODE_B0:
 972                 err = mlx4_unicast_promisc_remove(mdev->dev,
 973                                                   priv->base_qpn,
 974                                                   priv->port);
 975                 if (err)
 976                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 977                 /* Disable Multicast promisc */
 978                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 979                         err = mlx4_multicast_promisc_remove(mdev->dev,
 980                                                             priv->base_qpn,
 981                                                             priv->port);
 982                         if (err)
 983                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 984                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 985                 }
 986                 break;
 987
 988         case MLX4_STEERING_MODE_A0:
 989                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 990                                              priv->port,
 991                                              priv->base_qpn, 0);
 992                 if (err)
 993                         en_err(priv, "Failed disabling promiscuous mode\n");
 994                 break;
 995         }
 996 }
 997
 998 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 999                                  struct net_device *dev,
1000                                  struct mlx4_en_dev *mdev)
1001 {
1002         struct mlx4_en_mc_list *mclist, *tmp;
1003         u64 mcast_addr = 0;
1004         u8 mc_list[16] = {0};
1005         int err = 0;
1006
1007         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
1008         if (dev->flags & IFF_ALLMULTI) {
1009                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1010                                           0, MLX4_MCAST_DISABLE);
1011                 if (err)
1012                         en_err(priv, "Failed disabling multicast filter\n");
1013
1014                 /* Add the default qp number as multicast promisc */
1015                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
1016                         switch (mdev->dev->caps.steering_mode) {
1017                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1018                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
1019                                                                   priv->port,
1020                                                                   priv->base_qpn,
1021                                                                   MLX4_FS_MC_DEFAULT);
1022                                 break;
1023
1024                         case MLX4_STEERING_MODE_B0:
1025                                 err = mlx4_multicast_promisc_add(mdev->dev,
1026                                                                  priv->base_qpn,
1027                                                                  priv->port);
1028                                 break;
1029
1030                         case MLX4_STEERING_MODE_A0:
1031                                 break;
1032                         }
1033                         if (err)
1034                                 en_err(priv, "Failed entering multicast promisc mode\n");
1035                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1036                 }
1037         } else {
1038                 /* Disable Multicast promisc */
1039                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1040                         switch (mdev->dev->caps.steering_mode) {
1041                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1042                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
1043                                                                      priv->port,
1044                                                                      MLX4_FS_MC_DEFAULT);
1045                                 break;
1046
1047                         case MLX4_STEERING_MODE_B0:
1048                                 err = mlx4_multicast_promisc_remove(mdev->dev,
1049                                                                     priv->base_qpn,
1050                                                                     priv->port);
1051                                 break;
1052
1053                         case MLX4_STEERING_MODE_A0:
1054                                 break;
1055                         }
1056                         if (err)
1057                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1058                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1059                 }
1060
1061                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1062                                           0, MLX4_MCAST_DISABLE);
1063                 if (err)
1064                         en_err(priv, "Failed disabling multicast filter\n");
1065
1066                 /* Flush mcast filter and init it with broadcast address */
1067                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1068                                     1, MLX4_MCAST_CONFIG);
1069
1070                 /* Update multicast list - we cache all addresses so they won't
1071                  * change while HW is updated holding the command semaphor */
1072                 netif_addr_lock_bh(dev);
1073                 mlx4_en_cache_mclist(dev);
1074                 netif_addr_unlock_bh(dev);
1075                 list_for_each_entry(mclist, &priv->mc_list, list) {
1076                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
1077                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1078                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
1079                 }
1080                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1081                                           0, MLX4_MCAST_ENABLE);
1082                 if (err)
1083                         en_err(priv, "Failed enabling multicast filter\n");
1084
1085                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1086                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1087                         if (mclist->action == MCLIST_REM) {
1088                                 /* detach this address and delete from list */
1089                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1090                                 mc_list[5] = priv->port;
1091                                 err = mlx4_multicast_detach(mdev->dev,
1092                                                             priv->rss_map.indir_qp,
1093                                                             mc_list,
1094                                                             MLX4_PROT_ETH,
1095                                                             mclist->reg_id);
1096                                 if (err)
1097                                         en_err(priv, "Fail to detach multicast address\n");
1098
1099                                 if (mclist->tunnel_reg_id) {
1100                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1101                                         if (err)
1102                                                 en_err(priv, "Failed to detach multicast address\n");
1103                                 }
1104
1105                                 /* remove from list */
1106                                 list_del(&mclist->list);
1107                                 kfree(mclist);
1108                         } else if (mclist->action == MCLIST_ADD) {
1109                                 /* attach the address */
1110                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1111                                 /* needed for B0 steering support */
1112                                 mc_list[5] = priv->port;
1113                                 err = mlx4_multicast_attach(mdev->dev,
1114                                                             priv->rss_map.indir_qp,
1115                                                             mc_list,
1116                                                             priv->port, 0,
1117                                                             MLX4_PROT_ETH,
1118                                                             &mclist->reg_id);
1119                                 if (err)
1120                                         en_err(priv, "Fail to attach multicast address\n");
1121
1122                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1123                                                                &mclist->tunnel_reg_id);
1124                                 if (err)
1125                                         en_err(priv, "Failed to attach multicast address\n");
1126                         }
1127                 }
1128         }
1129 }
1130
1131 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1132                                  struct net_device *dev,
1133                                  struct mlx4_en_dev *mdev)
1134 {
1135         struct netdev_hw_addr *ha;
1136         struct mlx4_mac_entry *entry;
1137         struct hlist_node *tmp;
1138         bool found;
1139         u64 mac;
1140         int err = 0;
1141         struct hlist_head *bucket;
1142         unsigned int i;
1143         int removed = 0;
1144         u32 prev_flags;
1145
1146         /* Note that we do not need to protect our mac_hash traversal with rcu,
1147          * since all modification code is protected by mdev->state_lock
1148          */
1149
1150         /* find what to remove */
1151         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1152                 bucket = &priv->mac_hash[i];
1153                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1154                         found = false;
1155                         netdev_for_each_uc_addr(ha, dev) {
1156                                 if (ether_addr_equal_64bits(entry->mac,
1157                                                             ha->addr)) {
1158                                         found = true;
1159                                         break;
1160                                 }
1161                         }
1162
1163                         /* MAC address of the port is not in uc list */
1164                         if (ether_addr_equal_64bits(entry->mac,
1165                                                     priv->current_mac))
1166                                 found = true;
1167
1168                         if (!found) {
1169                                 mac = mlx4_mac_to_u64(entry->mac);
1170                                 mlx4_en_uc_steer_release(priv, entry->mac,
1171                                                          priv->base_qpn,
1172                                                          entry->reg_id);
1173                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1174
1175                                 hlist_del_rcu(&entry->hlist);
1176                                 kfree_rcu(entry, rcu);
1177                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1178                                        entry->mac, priv->port);
1179                                 ++removed;
1180                         }
1181                 }
1182         }
1183
1184         /* if we didn't remove anything, there is no use in trying to add
1185          * again once we are in a forced promisc mode state
1186          */
1187         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1188                 return;
1189
1190         prev_flags = priv->flags;
1191         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1192
1193         /* find what to add */
1194         netdev_for_each_uc_addr(ha, dev) {
1195                 found = false;
1196                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1197                 hlist_for_each_entry(entry, bucket, hlist) {
1198                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1199                                 found = true;
1200                                 break;
1201                         }
1202                 }
1203
1204                 if (!found) {
1205                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1206                         if (!entry) {
1207                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1208                                        ha->addr, priv->port);
1209                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1210                                 break;
1211                         }
1212                         mac = mlx4_mac_to_u64(ha->addr);
1213                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1214                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1215                         if (err < 0) {
1216                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1217                                        ha->addr, priv->port, err);
1218                                 kfree(entry);
1219                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1220                                 break;
1221                         }
1222                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1223                                                    &priv->base_qpn,
1224                                                    &entry->reg_id);
1225                         if (err) {
1226                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1227                                        ha->addr, priv->port, err);
1228                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1229                                 kfree(entry);
1230                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1231                                 break;
1232                         } else {
1233                                 unsigned int mac_hash;
1234                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1235                                        ha->addr, priv->port);
1236                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1237                                 bucket = &priv->mac_hash[mac_hash];
1238                                 hlist_add_head_rcu(&entry->hlist, bucket);
1239                         }
1240                 }
1241         }
1242
1243         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1244                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1245                         priv->port);
1246         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1247                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1248                         priv->port);
1249         }
1250 }
1251
1252 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1253 {
1254         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1255                                                  rx_mode_task);
1256         struct mlx4_en_dev *mdev = priv->mdev;
1257         struct net_device *dev = priv->dev;
1258
1259         mutex_lock(&mdev->state_lock);
1260         if (!mdev->device_up) {
1261                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1262                 goto out;
1263         }
1264         if (!priv->port_up) {
1265                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1266                 goto out;
1267         }
1268
1269         if (!netif_carrier_ok(dev)) {
1270                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1271                         if (priv->port_state.link_state) {
1272                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1273                                 netif_carrier_on(dev);
1274                                 en_dbg(LINK, priv, "Link Up\n");
1275                         }
1276                 }
1277         }
1278
1279         if (dev->priv_flags & IFF_UNICAST_FLT)
1280                 mlx4_en_do_uc_filter(priv, dev, mdev);
1281
1282         /* Promsicuous mode: disable all filters */
1283         if ((dev->flags & IFF_PROMISC) ||
1284             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1285                 mlx4_en_set_promisc_mode(priv, mdev);
1286                 goto out;
1287         }
1288
1289         /* Not in promiscuous mode */
1290         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1291                 mlx4_en_clear_promisc_mode(priv, mdev);
1292
1293         mlx4_en_do_multicast(priv, dev, mdev);
1294 out:
1295         mutex_unlock(&mdev->state_lock);
1296 }
1297
1298 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1299 {
1300         u64 reg_id;
1301         int err = 0;
1302         int *qpn = &priv->base_qpn;
1303         struct mlx4_mac_entry *entry;
1304
1305         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1306         if (err)
1307                 return err;
1308
1309         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1310                                        &priv->tunnel_reg_id);
1311         if (err)
1312                 goto tunnel_err;
1313
1314         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1315         if (!entry) {
1316                 err = -ENOMEM;
1317                 goto alloc_err;
1318         }
1319
1320         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1321         memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1322         entry->reg_id = reg_id;
1323         hlist_add_head_rcu(&entry->hlist,
1324                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1325
1326         return 0;
1327
1328 alloc_err:
1329         if (priv->tunnel_reg_id)
1330                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1331
1332 tunnel_err:
1333         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1334         return err;
1335 }
1336
1337 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1338 {
1339         u64 mac;
1340         unsigned int i;
1341         int qpn = priv->base_qpn;
1342         struct hlist_head *bucket;
1343         struct hlist_node *tmp;
1344         struct mlx4_mac_entry *entry;
1345
1346         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1347                 bucket = &priv->mac_hash[i];
1348                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1349                         mac = mlx4_mac_to_u64(entry->mac);
1350                         en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1351                                entry->mac);
1352                         mlx4_en_uc_steer_release(priv, entry->mac,
1353                                                  qpn, entry->reg_id);
1354
1355                         mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1356                         hlist_del_rcu(&entry->hlist);
1357                         kfree_rcu(entry, rcu);
1358                 }
1359         }
1360
1361         if (priv->tunnel_reg_id) {
1362                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1363                 priv->tunnel_reg_id = 0;
1364         }
1365 }
1366
1367 static void mlx4_en_tx_timeout(struct net_device *dev, unsigned int txqueue)
1368 {
1369         struct mlx4_en_priv *priv = netdev_priv(dev);
1370         struct mlx4_en_dev *mdev = priv->mdev;
1371         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][txqueue];
1372
1373         if (netif_msg_timer(priv))
1374                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1375
1376         en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1377                 txqueue, tx_ring->qpn, tx_ring->sp_cqn,
1378                 tx_ring->cons, tx_ring->prod);
1379
1380         priv->port_stats.tx_timeout++;
1381         if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state)) {
1382                 en_dbg(DRV, priv, "Scheduling port restart\n");
1383                 queue_work(mdev->workqueue, &priv->restart_task);
1384         }
1385 }
1386
1387
1388 static void
1389 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1390 {
1391         struct mlx4_en_priv *priv = netdev_priv(dev);
1392
1393         spin_lock_bh(&priv->stats_lock);
1394         mlx4_en_fold_software_stats(dev);
1395         netdev_stats_to_stats64(stats, &dev->stats);
1396         spin_unlock_bh(&priv->stats_lock);
1397 }
1398
1399 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1400 {
1401         struct mlx4_en_cq *cq;
1402         int i, t;
1403
1404         /* If we haven't received a specific coalescing setting
1405          * (module param), we set the moderation parameters as follows:
1406          * - moder_cnt is set to the number of mtu sized packets to
1407          *   satisfy our coalescing target.
1408          * - moder_time is set to a fixed value.
1409          */
1410         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1411         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1412         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1413         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1414         en_dbg(INTR, priv, "Default coalescing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1415                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1416
1417         /* Setup cq moderation params */
1418         for (i = 0; i < priv->rx_ring_num; i++) {
1419                 cq = priv->rx_cq[i];
1420                 cq->moder_cnt = priv->rx_frames;
1421                 cq->moder_time = priv->rx_usecs;
1422                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1423                 priv->last_moder_packets[i] = 0;
1424                 priv->last_moder_bytes[i] = 0;
1425         }
1426
1427         for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1428                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1429                         cq = priv->tx_cq[t][i];
1430                         cq->moder_cnt = priv->tx_frames;
1431                         cq->moder_time = priv->tx_usecs;
1432                 }
1433         }
1434
1435         /* Reset auto-moderation params */
1436         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1437         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1438         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1439         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1440         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1441         priv->adaptive_rx_coal = 1;
1442         priv->last_moder_jiffies = 0;
1443         priv->last_moder_tx_packets = 0;
1444 }
1445
1446 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1447 {
1448         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1449         u32 pkt_rate_high, pkt_rate_low;
1450         struct mlx4_en_cq *cq;
1451         unsigned long packets;
1452         unsigned long rate;
1453         unsigned long avg_pkt_size;
1454         unsigned long rx_packets;
1455         unsigned long rx_bytes;
1456         unsigned long rx_pkt_diff;
1457         int moder_time;
1458         int ring, err;
1459
1460         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1461                 return;
1462
1463         pkt_rate_low = READ_ONCE(priv->pkt_rate_low);
1464         pkt_rate_high = READ_ONCE(priv->pkt_rate_high);
1465
1466         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1467                 rx_packets = READ_ONCE(priv->rx_ring[ring]->packets);
1468                 rx_bytes = READ_ONCE(priv->rx_ring[ring]->bytes);
1469
1470                 rx_pkt_diff = rx_packets - priv->last_moder_packets[ring];
1471                 packets = rx_pkt_diff;
1472                 rate = packets * HZ / period;
1473                 avg_pkt_size = packets ? (rx_bytes -
1474                                 priv->last_moder_bytes[ring]) / packets : 0;
1475
1476                 /* Apply auto-moderation only when packet rate
1477                  * exceeds a rate that it matters */
1478                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1479                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1480                         if (rate <= pkt_rate_low)
1481                                 moder_time = priv->rx_usecs_low;
1482                         else if (rate >= pkt_rate_high)
1483                                 moder_time = priv->rx_usecs_high;
1484                         else
1485                                 moder_time = (rate - pkt_rate_low) *
1486                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1487                                         (pkt_rate_high - pkt_rate_low) +
1488                                         priv->rx_usecs_low;
1489                 } else {
1490                         moder_time = priv->rx_usecs_low;
1491                 }
1492
1493                 cq = priv->rx_cq[ring];
1494                 if (moder_time != priv->last_moder_time[ring] ||
1495                     cq->moder_cnt != priv->rx_frames) {
1496                         priv->last_moder_time[ring] = moder_time;
1497                         cq->moder_time = moder_time;
1498                         cq->moder_cnt = priv->rx_frames;
1499                         err = mlx4_en_set_cq_moder(priv, cq);
1500                         if (err)
1501                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1502                                        ring);
1503                 }
1504                 priv->last_moder_packets[ring] = rx_packets;
1505                 priv->last_moder_bytes[ring] = rx_bytes;
1506         }
1507
1508         priv->last_moder_jiffies = jiffies;
1509 }
1510
1511 static void mlx4_en_do_get_stats(struct work_struct *work)
1512 {
1513         struct delayed_work *delay = to_delayed_work(work);
1514         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1515                                                  stats_task);
1516         struct mlx4_en_dev *mdev = priv->mdev;
1517         int err;
1518
1519         mutex_lock(&mdev->state_lock);
1520         if (mdev->device_up) {
1521                 if (priv->port_up) {
1522                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1523                         if (err)
1524                                 en_dbg(HW, priv, "Could not update stats\n");
1525
1526                         mlx4_en_auto_moderation(priv);
1527                 }
1528
1529                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1530         }
1531         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1532                 mlx4_en_do_set_mac(priv, priv->current_mac);
1533                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1534         }
1535         mutex_unlock(&mdev->state_lock);
1536 }
1537
1538 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1539  * periodically
1540  */
1541 static void mlx4_en_service_task(struct work_struct *work)
1542 {
1543         struct delayed_work *delay = to_delayed_work(work);
1544         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1545                                                  service_task);
1546         struct mlx4_en_dev *mdev = priv->mdev;
1547
1548         mutex_lock(&mdev->state_lock);
1549         if (mdev->device_up) {
1550                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1551                         mlx4_en_ptp_overflow_check(mdev);
1552
1553                 mlx4_en_recover_from_oom(priv);
1554                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1555                                    SERVICE_TASK_DELAY);
1556         }
1557         mutex_unlock(&mdev->state_lock);
1558 }
1559
1560 static void mlx4_en_linkstate(struct work_struct *work)
1561 {
1562         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1563                                                  linkstate_task);
1564         struct mlx4_en_dev *mdev = priv->mdev;
1565         int linkstate = priv->link_state;
1566
1567         mutex_lock(&mdev->state_lock);
1568         /* If observable port state changed set carrier state and
1569          * report to system log */
1570         if (priv->last_link_state != linkstate) {
1571                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1572                         en_info(priv, "Link Down\n");
1573                         netif_carrier_off(priv->dev);
1574                 } else {
1575                         en_info(priv, "Link Up\n");
1576                         netif_carrier_on(priv->dev);
1577                 }
1578         }
1579         priv->last_link_state = linkstate;
1580         mutex_unlock(&mdev->state_lock);
1581 }
1582
1583 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1584 {
1585         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1586         int numa_node = priv->mdev->dev->numa_node;
1587
1588         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1589                 return -ENOMEM;
1590
1591         cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1592                         ring->affinity_mask);
1593         return 0;
1594 }
1595
1596 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1597 {
1598         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1599 }
1600
1601 static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv,
1602                                       int tx_ring_idx)
1603 {
1604         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX_XDP][tx_ring_idx];
1605         int rr_index = tx_ring_idx;
1606
1607         tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc;
1608         tx_ring->recycle_ring = priv->rx_ring[rr_index];
1609         en_dbg(DRV, priv, "Set tx_ring[%d][%d]->recycle_ring = rx_ring[%d]\n",
1610                TX_XDP, tx_ring_idx, rr_index);
1611 }
1612
1613 int mlx4_en_start_port(struct net_device *dev)
1614 {
1615         struct mlx4_en_priv *priv = netdev_priv(dev);
1616         struct mlx4_en_dev *mdev = priv->mdev;
1617         struct mlx4_en_cq *cq;
1618         struct mlx4_en_tx_ring *tx_ring;
1619         int rx_index = 0;
1620         int err = 0;
1621         int i, t;
1622         int j;
1623         u8 mc_list[16] = {0};
1624
1625         if (priv->port_up) {
1626                 en_dbg(DRV, priv, "start port called while port already up\n");
1627                 return 0;
1628         }
1629
1630         INIT_LIST_HEAD(&priv->mc_list);
1631         INIT_LIST_HEAD(&priv->curr_list);
1632         INIT_LIST_HEAD(&priv->ethtool_list);
1633         memset(&priv->ethtool_rules[0], 0,
1634                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1635
1636         /* Calculate Rx buf size */
1637         dev->mtu = min(dev->mtu, priv->max_mtu);
1638         mlx4_en_calc_rx_buf(dev);
1639         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1640
1641         /* Configure rx cq's and rings */
1642         err = mlx4_en_activate_rx_rings(priv);
1643         if (err) {
1644                 en_err(priv, "Failed to activate RX rings\n");
1645                 return err;
1646         }
1647         for (i = 0; i < priv->rx_ring_num; i++) {
1648                 cq = priv->rx_cq[i];
1649
1650                 err = mlx4_en_init_affinity_hint(priv, i);
1651                 if (err) {
1652                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1653                         goto cq_err;
1654                 }
1655
1656                 err = mlx4_en_activate_cq(priv, cq, i);
1657                 if (err) {
1658                         en_err(priv, "Failed activating Rx CQ\n");
1659                         mlx4_en_free_affinity_hint(priv, i);
1660                         goto cq_err;
1661                 }
1662
1663                 for (j = 0; j < cq->size; j++) {
1664                         struct mlx4_cqe *cqe = NULL;
1665
1666                         cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1667                               priv->cqe_factor;
1668                         cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1669                 }
1670
1671                 err = mlx4_en_set_cq_moder(priv, cq);
1672                 if (err) {
1673                         en_err(priv, "Failed setting cq moderation parameters\n");
1674                         mlx4_en_deactivate_cq(priv, cq);
1675                         mlx4_en_free_affinity_hint(priv, i);
1676                         goto cq_err;
1677                 }
1678                 mlx4_en_arm_cq(priv, cq);
1679                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1680                 ++rx_index;
1681         }
1682
1683         /* Set qp number */
1684         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1685         err = mlx4_en_get_qp(priv);
1686         if (err) {
1687                 en_err(priv, "Failed getting eth qp\n");
1688                 goto cq_err;
1689         }
1690         mdev->mac_removed[priv->port] = 0;
1691
1692         priv->counter_index =
1693                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1694
1695         err = mlx4_en_config_rss_steer(priv);
1696         if (err) {
1697                 en_err(priv, "Failed configuring rss steering\n");
1698                 goto mac_err;
1699         }
1700
1701         err = mlx4_en_create_drop_qp(priv);
1702         if (err)
1703                 goto rss_err;
1704
1705         /* Configure tx cq's and rings */
1706         for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1707                 u8 num_tx_rings_p_up = t == TX ?
1708                         priv->num_tx_rings_p_up : priv->tx_ring_num[t];
1709
1710                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1711                         /* Configure cq */
1712                         cq = priv->tx_cq[t][i];
1713                         err = mlx4_en_activate_cq(priv, cq, i);
1714                         if (err) {
1715                                 en_err(priv, "Failed allocating Tx CQ\n");
1716                                 goto tx_err;
1717                         }
1718                         err = mlx4_en_set_cq_moder(priv, cq);
1719                         if (err) {
1720                                 en_err(priv, "Failed setting cq moderation parameters\n");
1721                                 mlx4_en_deactivate_cq(priv, cq);
1722                                 goto tx_err;
1723                         }
1724                         en_dbg(DRV, priv,
1725                                "Resetting index of collapsed CQ:%d to -1\n", i);
1726                         cq->buf->wqe_index = cpu_to_be16(0xffff);
1727
1728                         /* Configure ring */
1729                         tx_ring = priv->tx_ring[t][i];
1730                         err = mlx4_en_activate_tx_ring(priv, tx_ring,
1731                                                        cq->mcq.cqn,
1732                                                        i / num_tx_rings_p_up);
1733                         if (err) {
1734                                 en_err(priv, "Failed allocating Tx ring\n");
1735                                 mlx4_en_deactivate_cq(priv, cq);
1736                                 goto tx_err;
1737                         }
1738                         clear_bit(MLX4_EN_TX_RING_STATE_RECOVERING, &tx_ring->state);
1739                         if (t != TX_XDP) {
1740                                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1741                                 tx_ring->recycle_ring = NULL;
1742
1743                                 /* Arm CQ for TX completions */
1744                                 mlx4_en_arm_cq(priv, cq);
1745
1746                         } else {
1747                                 mlx4_en_init_tx_xdp_ring_descs(priv, tx_ring);
1748                                 mlx4_en_init_recycle_ring(priv, i);
1749                                 /* XDP TX CQ should never be armed */
1750                         }
1751
1752                         /* Set initial ownership of all Tx TXBBs to SW (1) */
1753                         for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1754                                 *((u32 *)(tx_ring->buf + j)) = 0xffffffff;
1755                 }
1756         }
1757
1758         /* Configure port */
1759         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1760                                     priv->rx_skb_size + ETH_FCS_LEN,
1761                                     priv->prof->tx_pause,
1762                                     priv->prof->tx_ppp,
1763                                     priv->prof->rx_pause,
1764                                     priv->prof->rx_ppp);
1765         if (err) {
1766                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1767                        priv->port, err);
1768                 goto tx_err;
1769         }
1770
1771         err = mlx4_SET_PORT_user_mtu(mdev->dev, priv->port, dev->mtu);
1772         if (err) {
1773                 en_err(priv, "Failed to pass user MTU(%d) to Firmware for port %d, with error %d\n",
1774                        dev->mtu, priv->port, err);
1775                 goto tx_err;
1776         }
1777
1778         /* Set default qp number */
1779         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1780         if (err) {
1781                 en_err(priv, "Failed setting default qp numbers\n");
1782                 goto tx_err;
1783         }
1784
1785         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1786                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1787                 if (err) {
1788                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1789                                err);
1790                         goto tx_err;
1791                 }
1792         }
1793
1794         /* Init port */
1795         en_dbg(HW, priv, "Initializing port\n");
1796         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1797         if (err) {
1798                 en_err(priv, "Failed Initializing port\n");
1799                 goto tx_err;
1800         }
1801
1802         /* Set Unicast and VXLAN steering rules */
1803         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1804             mlx4_en_set_rss_steer_rules(priv))
1805                 mlx4_warn(mdev, "Failed setting steering rules\n");
1806
1807         /* Attach rx QP to bradcast address */
1808         eth_broadcast_addr(&mc_list[10]);
1809         mc_list[5] = priv->port; /* needed for B0 steering support */
1810         if (mlx4_multicast_attach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1811                                   priv->port, 0, MLX4_PROT_ETH,
1812                                   &priv->broadcast_id))
1813                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1814
1815         /* Must redo promiscuous mode setup. */
1816         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1817
1818         /* Schedule multicast task to populate multicast list */
1819         queue_work(mdev->workqueue, &priv->rx_mode_task);
1820
1821         if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1822                 udp_tunnel_nic_reset_ntf(dev);
1823
1824         priv->port_up = true;
1825
1826         /* Process all completions if exist to prevent
1827          * the queues freezing if they are full
1828          */
1829         for (i = 0; i < priv->rx_ring_num; i++) {
1830                 local_bh_disable();
1831                 napi_schedule(&priv->rx_cq[i]->napi);
1832                 local_bh_enable();
1833         }
1834
1835         clear_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state);
1836         netif_tx_start_all_queues(dev);
1837         netif_device_attach(dev);
1838
1839         return 0;
1840
1841 tx_err:
1842         if (t == MLX4_EN_NUM_TX_TYPES) {
1843                 t--;
1844                 i = priv->tx_ring_num[t];
1845         }
1846         while (t >= 0) {
1847                 while (i--) {
1848                         mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1849                         mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1850                 }
1851                 if (!t--)
1852                         break;
1853                 i = priv->tx_ring_num[t];
1854         }
1855         mlx4_en_destroy_drop_qp(priv);
1856 rss_err:
1857         mlx4_en_release_rss_steer(priv);
1858 mac_err:
1859         mlx4_en_put_qp(priv);
1860 cq_err:
1861         while (rx_index--) {
1862                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1863                 mlx4_en_free_affinity_hint(priv, rx_index);
1864         }
1865         for (i = 0; i < priv->rx_ring_num; i++)
1866                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1867
1868         return err; /* need to close devices */
1869 }
1870
1871
1872 void mlx4_en_stop_port(struct net_device *dev, int detach)
1873 {
1874         struct mlx4_en_priv *priv = netdev_priv(dev);
1875         struct mlx4_en_dev *mdev = priv->mdev;
1876         struct mlx4_en_mc_list *mclist, *tmp;
1877         struct ethtool_flow_id *flow, *tmp_flow;
1878         int i, t;
1879         u8 mc_list[16] = {0};
1880
1881         if (!priv->port_up) {
1882                 en_dbg(DRV, priv, "stop port called while port already down\n");
1883                 return;
1884         }
1885
1886         /* close port*/
1887         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1888
1889         /* Synchronize with tx routine */
1890         netif_tx_lock_bh(dev);
1891         if (detach)
1892                 netif_device_detach(dev);
1893         netif_tx_stop_all_queues(dev);
1894         netif_tx_unlock_bh(dev);
1895
1896         netif_tx_disable(dev);
1897
1898         spin_lock_bh(&priv->stats_lock);
1899         mlx4_en_fold_software_stats(dev);
1900         /* Set port as not active */
1901         priv->port_up = false;
1902         spin_unlock_bh(&priv->stats_lock);
1903
1904         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1905
1906         /* Promsicuous mode */
1907         if (mdev->dev->caps.steering_mode ==
1908             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1909                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1910                                  MLX4_EN_FLAG_MC_PROMISC);
1911                 mlx4_flow_steer_promisc_remove(mdev->dev,
1912                                                priv->port,
1913                                                MLX4_FS_ALL_DEFAULT);
1914                 mlx4_flow_steer_promisc_remove(mdev->dev,
1915                                                priv->port,
1916                                                MLX4_FS_MC_DEFAULT);
1917         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1918                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1919
1920                 /* Disable promiscouos mode */
1921                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1922                                             priv->port);
1923
1924                 /* Disable Multicast promisc */
1925                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1926                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1927                                                       priv->port);
1928                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1929                 }
1930         }
1931
1932         /* Detach All multicasts */
1933         eth_broadcast_addr(&mc_list[10]);
1934         mc_list[5] = priv->port; /* needed for B0 steering support */
1935         mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1936                               MLX4_PROT_ETH, priv->broadcast_id);
1937         list_for_each_entry(mclist, &priv->curr_list, list) {
1938                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1939                 mc_list[5] = priv->port;
1940                 mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp,
1941                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1942                 if (mclist->tunnel_reg_id)
1943                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1944         }
1945         mlx4_en_clear_list(dev);
1946         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1947                 list_del(&mclist->list);
1948                 kfree(mclist);
1949         }
1950
1951         /* Flush multicast filter */
1952         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1953
1954         /* Remove flow steering rules for the port*/
1955         if (mdev->dev->caps.steering_mode ==
1956             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1957                 ASSERT_RTNL();
1958                 list_for_each_entry_safe(flow, tmp_flow,
1959                                          &priv->ethtool_list, list) {
1960                         mlx4_flow_detach(mdev->dev, flow->id);
1961                         list_del(&flow->list);
1962                 }
1963         }
1964
1965         mlx4_en_destroy_drop_qp(priv);
1966
1967         /* Free TX Rings */
1968         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
1969                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1970                         mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1971                         mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1972                 }
1973         }
1974         msleep(10);
1975
1976         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++)
1977                 for (i = 0; i < priv->tx_ring_num[t]; i++)
1978                         mlx4_en_free_tx_buf(dev, priv->tx_ring[t][i]);
1979
1980         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1981                 mlx4_en_delete_rss_steer_rules(priv);
1982
1983         /* Free RSS qps */
1984         mlx4_en_release_rss_steer(priv);
1985
1986         /* Unregister Mac address for the port */
1987         mlx4_en_put_qp(priv);
1988         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1989                 mdev->mac_removed[priv->port] = 1;
1990
1991         /* Free RX Rings */
1992         for (i = 0; i < priv->rx_ring_num; i++) {
1993                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1994
1995                 napi_synchronize(&cq->napi);
1996                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1997                 mlx4_en_deactivate_cq(priv, cq);
1998
1999                 mlx4_en_free_affinity_hint(priv, i);
2000         }
2001 }
2002
2003 static void mlx4_en_restart(struct work_struct *work)
2004 {
2005         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2006                                                  restart_task);
2007         struct mlx4_en_dev *mdev = priv->mdev;
2008         struct net_device *dev = priv->dev;
2009
2010         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
2011
2012         rtnl_lock();
2013         mutex_lock(&mdev->state_lock);
2014         if (priv->port_up) {
2015                 mlx4_en_stop_port(dev, 1);
2016                 if (mlx4_en_start_port(dev))
2017                         en_err(priv, "Failed restarting port %d\n", priv->port);
2018         }
2019         mutex_unlock(&mdev->state_lock);
2020         rtnl_unlock();
2021 }
2022
2023 static void mlx4_en_clear_stats(struct net_device *dev)
2024 {
2025         struct mlx4_en_priv *priv = netdev_priv(dev);
2026         struct mlx4_en_dev *mdev = priv->mdev;
2027         struct mlx4_en_tx_ring **tx_ring;
2028         int i;
2029
2030         if (!mlx4_is_slave(mdev->dev))
2031                 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
2032                         en_dbg(HW, priv, "Failed dumping statistics\n");
2033
2034         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
2035         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
2036         memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
2037         memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
2038         memset(&priv->rx_priority_flowstats, 0,
2039                sizeof(priv->rx_priority_flowstats));
2040         memset(&priv->tx_priority_flowstats, 0,
2041                sizeof(priv->tx_priority_flowstats));
2042         memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
2043
2044         tx_ring = priv->tx_ring[TX];
2045         for (i = 0; i < priv->tx_ring_num[TX]; i++) {
2046                 tx_ring[i]->bytes = 0;
2047                 tx_ring[i]->packets = 0;
2048                 tx_ring[i]->tx_csum = 0;
2049                 tx_ring[i]->tx_dropped = 0;
2050                 tx_ring[i]->queue_stopped = 0;
2051                 tx_ring[i]->wake_queue = 0;
2052                 tx_ring[i]->tso_packets = 0;
2053                 tx_ring[i]->xmit_more = 0;
2054         }
2055         for (i = 0; i < priv->rx_ring_num; i++) {
2056                 priv->rx_ring[i]->bytes = 0;
2057                 priv->rx_ring[i]->packets = 0;
2058                 priv->rx_ring[i]->csum_ok = 0;
2059                 priv->rx_ring[i]->csum_none = 0;
2060                 priv->rx_ring[i]->csum_complete = 0;
2061         }
2062 }
2063
2064 static int mlx4_en_open(struct net_device *dev)
2065 {
2066         struct mlx4_en_priv *priv = netdev_priv(dev);
2067         struct mlx4_en_dev *mdev = priv->mdev;
2068         int err = 0;
2069
2070         mutex_lock(&mdev->state_lock);
2071
2072         if (!mdev->device_up) {
2073                 en_err(priv, "Cannot open - device down/disabled\n");
2074                 err = -EBUSY;
2075                 goto out;
2076         }
2077
2078         /* Reset HW statistics and SW counters */
2079         mlx4_en_clear_stats(dev);
2080
2081         err = mlx4_en_start_port(dev);
2082         if (err)
2083                 en_err(priv, "Failed starting port:%d\n", priv->port);
2084
2085 out:
2086         mutex_unlock(&mdev->state_lock);
2087         return err;
2088 }
2089
2090
2091 static int mlx4_en_close(struct net_device *dev)
2092 {
2093         struct mlx4_en_priv *priv = netdev_priv(dev);
2094         struct mlx4_en_dev *mdev = priv->mdev;
2095
2096         en_dbg(IFDOWN, priv, "Close port called\n");
2097
2098         mutex_lock(&mdev->state_lock);
2099
2100         mlx4_en_stop_port(dev, 0);
2101         netif_carrier_off(dev);
2102
2103         mutex_unlock(&mdev->state_lock);
2104         return 0;
2105 }
2106
2107 static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
2108 {
2109         int i, t;
2110
2111 #ifdef CONFIG_RFS_ACCEL
2112         priv->dev->rx_cpu_rmap = NULL;
2113 #endif
2114
2115         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2116                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2117                         if (priv->tx_ring[t] && priv->tx_ring[t][i])
2118                                 mlx4_en_destroy_tx_ring(priv,
2119                                                         &priv->tx_ring[t][i]);
2120                         if (priv->tx_cq[t] && priv->tx_cq[t][i])
2121                                 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2122                 }
2123                 kfree(priv->tx_ring[t]);
2124                 kfree(priv->tx_cq[t]);
2125         }
2126
2127         for (i = 0; i < priv->rx_ring_num; i++) {
2128                 if (priv->rx_ring[i])
2129                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2130                                 priv->prof->rx_ring_size, priv->stride);
2131                 if (priv->rx_cq[i])
2132                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2133         }
2134
2135 }
2136
2137 static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2138 {
2139         struct mlx4_en_port_profile *prof = priv->prof;
2140         int i, t;
2141         int node;
2142
2143         /* Create tx Rings */
2144         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2145                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2146                         node = cpu_to_node(i % num_online_cpus());
2147                         if (mlx4_en_create_cq(priv, &priv->tx_cq[t][i],
2148                                               prof->tx_ring_size, i, t, node))
2149                                 goto err;
2150
2151                         if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[t][i],
2152                                                    prof->tx_ring_size,
2153                                                    TXBB_SIZE, node, i))
2154                                 goto err;
2155                 }
2156         }
2157
2158         /* Create rx Rings */
2159         for (i = 0; i < priv->rx_ring_num; i++) {
2160                 node = cpu_to_node(i % num_online_cpus());
2161                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2162                                       prof->rx_ring_size, i, RX, node))
2163                         goto err;
2164
2165                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2166                                            prof->rx_ring_size, priv->stride,
2167                                            node, i))
2168                         goto err;
2169
2170         }
2171
2172 #ifdef CONFIG_RFS_ACCEL
2173         priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2174 #endif
2175
2176         return 0;
2177
2178 err:
2179         en_err(priv, "Failed to allocate NIC resources\n");
2180         for (i = 0; i < priv->rx_ring_num; i++) {
2181                 if (priv->rx_ring[i])
2182                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2183                                                 prof->rx_ring_size,
2184                                                 priv->stride);
2185                 if (priv->rx_cq[i])
2186                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2187         }
2188         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2189                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2190                         if (priv->tx_ring[t][i])
2191                                 mlx4_en_destroy_tx_ring(priv,
2192                                                         &priv->tx_ring[t][i]);
2193                         if (priv->tx_cq[t][i])
2194                                 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2195                 }
2196         }
2197         return -ENOMEM;
2198 }
2199
2200
2201 static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2202                              struct mlx4_en_priv *src,
2203                              struct mlx4_en_port_profile *prof)
2204 {
2205         int t;
2206
2207         memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2208                sizeof(dst->hwtstamp_config));
2209         dst->num_tx_rings_p_up = prof->num_tx_rings_p_up;
2210         dst->rx_ring_num = prof->rx_ring_num;
2211         dst->flags = prof->flags;
2212         dst->mdev = src->mdev;
2213         dst->port = src->port;
2214         dst->dev = src->dev;
2215         dst->prof = prof;
2216         dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2217                                          DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2218
2219         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2220                 dst->tx_ring_num[t] = prof->tx_ring_num[t];
2221                 if (!dst->tx_ring_num[t])
2222                         continue;
2223
2224                 dst->tx_ring[t] = kcalloc(MAX_TX_RINGS,
2225                                           sizeof(struct mlx4_en_tx_ring *),
2226                                           GFP_KERNEL);
2227                 if (!dst->tx_ring[t])
2228                         goto err_free_tx;
2229
2230                 dst->tx_cq[t] = kcalloc(MAX_TX_RINGS,
2231                                         sizeof(struct mlx4_en_cq *),
2232                                         GFP_KERNEL);
2233                 if (!dst->tx_cq[t]) {
2234                         kfree(dst->tx_ring[t]);
2235                         goto err_free_tx;
2236                 }
2237         }
2238
2239         return 0;
2240
2241 err_free_tx:
2242         while (t--) {
2243                 kfree(dst->tx_ring[t]);
2244                 kfree(dst->tx_cq[t]);
2245         }
2246         return -ENOMEM;
2247 }
2248
2249 static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2250                                 struct mlx4_en_priv *src)
2251 {
2252         int t;
2253         memcpy(dst->rx_ring, src->rx_ring,
2254                sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2255         memcpy(dst->rx_cq, src->rx_cq,
2256                sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2257         memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2258                sizeof(dst->hwtstamp_config));
2259         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2260                 dst->tx_ring_num[t] = src->tx_ring_num[t];
2261                 dst->tx_ring[t] = src->tx_ring[t];
2262                 dst->tx_cq[t] = src->tx_cq[t];
2263         }
2264         dst->num_tx_rings_p_up = src->num_tx_rings_p_up;
2265         dst->rx_ring_num = src->rx_ring_num;
2266         memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2267 }
2268
2269 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2270                                 struct mlx4_en_priv *tmp,
2271                                 struct mlx4_en_port_profile *prof,
2272                                 bool carry_xdp_prog)
2273 {
2274         struct bpf_prog *xdp_prog;
2275         int i, t;
2276
2277         mlx4_en_copy_priv(tmp, priv, prof);
2278
2279         if (mlx4_en_alloc_resources(tmp)) {
2280                 en_warn(priv,
2281                         "%s: Resource allocation failed, using previous configuration\n",
2282                         __func__);
2283                 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2284                         kfree(tmp->tx_ring[t]);
2285                         kfree(tmp->tx_cq[t]);
2286                 }
2287                 return -ENOMEM;
2288         }
2289
2290         /* All rx_rings has the same xdp_prog.  Pick the first one. */
2291         xdp_prog = rcu_dereference_protected(
2292                 priv->rx_ring[0]->xdp_prog,
2293                 lockdep_is_held(&priv->mdev->state_lock));
2294
2295         if (xdp_prog && carry_xdp_prog) {
2296                 bpf_prog_add(xdp_prog, tmp->rx_ring_num);
2297                 for (i = 0; i < tmp->rx_ring_num; i++)
2298                         rcu_assign_pointer(tmp->rx_ring[i]->xdp_prog,
2299                                            xdp_prog);
2300         }
2301
2302         return 0;
2303 }
2304
2305 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2306                                     struct mlx4_en_priv *tmp)
2307 {
2308         mlx4_en_free_resources(priv);
2309         mlx4_en_update_priv(priv, tmp);
2310 }
2311
2312 void mlx4_en_destroy_netdev(struct net_device *dev)
2313 {
2314         struct mlx4_en_priv *priv = netdev_priv(dev);
2315         struct mlx4_en_dev *mdev = priv->mdev;
2316
2317         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2318
2319         /* Unregister device - this will close the port if it was up */
2320         if (priv->registered) {
2321                 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
2322                                                               priv->port));
2323                 unregister_netdev(dev);
2324         }
2325
2326         if (priv->allocated)
2327                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2328
2329         cancel_delayed_work(&priv->stats_task);
2330         cancel_delayed_work(&priv->service_task);
2331         /* flush any pending task for this netdev */
2332         flush_workqueue(mdev->workqueue);
2333
2334         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2335                 mlx4_en_remove_timestamp(mdev);
2336
2337         /* Detach the netdev so tasks would not attempt to access it */
2338         mutex_lock(&mdev->state_lock);
2339         mdev->pndev[priv->port] = NULL;
2340         mdev->upper[priv->port] = NULL;
2341
2342 #ifdef CONFIG_RFS_ACCEL
2343         mlx4_en_cleanup_filters(priv);
2344 #endif
2345
2346         mlx4_en_free_resources(priv);
2347         mutex_unlock(&mdev->state_lock);
2348
2349         free_netdev(dev);
2350 }
2351
2352 static bool mlx4_en_check_xdp_mtu(struct net_device *dev, int mtu)
2353 {
2354         struct mlx4_en_priv *priv = netdev_priv(dev);
2355
2356         if (mtu > MLX4_EN_MAX_XDP_MTU) {
2357                 en_err(priv, "mtu:%d > max:%d when XDP prog is attached\n",
2358                        mtu, MLX4_EN_MAX_XDP_MTU);
2359                 return false;
2360         }
2361
2362         return true;
2363 }
2364
2365 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2366 {
2367         struct mlx4_en_priv *priv = netdev_priv(dev);
2368         struct mlx4_en_dev *mdev = priv->mdev;
2369         int err = 0;
2370
2371         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2372                  dev->mtu, new_mtu);
2373
2374         if (priv->tx_ring_num[TX_XDP] &&
2375             !mlx4_en_check_xdp_mtu(dev, new_mtu))
2376                 return -EOPNOTSUPP;
2377
2378         dev->mtu = new_mtu;
2379
2380         if (netif_running(dev)) {
2381                 mutex_lock(&mdev->state_lock);
2382                 if (!mdev->device_up) {
2383                         /* NIC is probably restarting - let restart task reset
2384                          * the port */
2385                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2386                 } else {
2387                         mlx4_en_stop_port(dev, 1);
2388                         err = mlx4_en_start_port(dev);
2389                         if (err) {
2390                                 en_err(priv, "Failed restarting port:%d\n",
2391                                          priv->port);
2392                                 if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING,
2393                                                       &priv->state))
2394                                         queue_work(mdev->workqueue, &priv->restart_task);
2395                         }
2396                 }
2397                 mutex_unlock(&mdev->state_lock);
2398         }
2399         return 0;
2400 }
2401
2402 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2403 {
2404         struct mlx4_en_priv *priv = netdev_priv(dev);
2405         struct mlx4_en_dev *mdev = priv->mdev;
2406         struct hwtstamp_config config;
2407
2408         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2409                 return -EFAULT;
2410
2411         /* reserved for future extensions */
2412         if (config.flags)
2413                 return -EINVAL;
2414
2415         /* device doesn't support time stamping */
2416         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2417                 return -EINVAL;
2418
2419         /* TX HW timestamp */
2420         switch (config.tx_type) {
2421         case HWTSTAMP_TX_OFF:
2422         case HWTSTAMP_TX_ON:
2423                 break;
2424         default:
2425                 return -ERANGE;
2426         }
2427
2428         /* RX HW timestamp */
2429         switch (config.rx_filter) {
2430         case HWTSTAMP_FILTER_NONE:
2431                 break;
2432         case HWTSTAMP_FILTER_ALL:
2433         case HWTSTAMP_FILTER_SOME:
2434         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2435         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2436         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2437         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2438         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2439         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2440         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2441         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2442         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2443         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2444         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2445         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2446         case HWTSTAMP_FILTER_NTP_ALL:
2447                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2448                 break;
2449         default:
2450                 return -ERANGE;
2451         }
2452
2453         if (mlx4_en_reset_config(dev, config, dev->features)) {
2454                 config.tx_type = HWTSTAMP_TX_OFF;
2455                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2456         }
2457
2458         return copy_to_user(ifr->ifr_data, &config,
2459                             sizeof(config)) ? -EFAULT : 0;
2460 }
2461
2462 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2463 {
2464         struct mlx4_en_priv *priv = netdev_priv(dev);
2465
2466         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2467                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2468 }
2469
2470 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2471 {
2472         switch (cmd) {
2473         case SIOCSHWTSTAMP:
2474                 return mlx4_en_hwtstamp_set(dev, ifr);
2475         case SIOCGHWTSTAMP:
2476                 return mlx4_en_hwtstamp_get(dev, ifr);
2477         default:
2478                 return -EOPNOTSUPP;
2479         }
2480 }
2481
2482 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2483                                               netdev_features_t features)
2484 {
2485         struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2486         struct mlx4_en_dev *mdev = en_priv->mdev;
2487
2488         /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2489          * enable/disable make sure S-TAG flag is always in same state as
2490          * C-TAG.
2491          */
2492         if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2493             !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2494                 features |= NETIF_F_HW_VLAN_STAG_RX;
2495         else
2496                 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2497
2498         return features;
2499 }
2500
2501 static int mlx4_en_set_features(struct net_device *netdev,
2502                 netdev_features_t features)
2503 {
2504         struct mlx4_en_priv *priv = netdev_priv(netdev);
2505         bool reset = false;
2506         int ret = 0;
2507
2508         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2509                 en_info(priv, "Turn %s RX-FCS\n",
2510                         (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2511                 reset = true;
2512         }
2513
2514         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2515                 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2516
2517                 en_info(priv, "Turn %s RX-ALL\n",
2518                         ignore_fcs_value ? "ON" : "OFF");
2519                 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2520                                               priv->port, ignore_fcs_value);
2521                 if (ret)
2522                         return ret;
2523         }
2524
2525         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2526                 en_info(priv, "Turn %s RX vlan strip offload\n",
2527                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2528                 reset = true;
2529         }
2530
2531         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2532                 en_info(priv, "Turn %s TX vlan strip offload\n",
2533                         (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2534
2535         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2536                 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2537                         (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2538
2539         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2540                 en_info(priv, "Turn %s loopback\n",
2541                         (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2542                 mlx4_en_update_loopback_state(netdev, features);
2543         }
2544
2545         if (reset) {
2546                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2547                                            features);
2548                 if (ret)
2549                         return ret;
2550         }
2551
2552         return 0;
2553 }
2554
2555 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2556 {
2557         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2558         struct mlx4_en_dev *mdev = en_priv->mdev;
2559
2560         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac);
2561 }
2562
2563 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos,
2564                                __be16 vlan_proto)
2565 {
2566         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2567         struct mlx4_en_dev *mdev = en_priv->mdev;
2568
2569         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos,
2570                                 vlan_proto);
2571 }
2572
2573 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2574                                int max_tx_rate)
2575 {
2576         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2577         struct mlx4_en_dev *mdev = en_priv->mdev;
2578
2579         return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2580                                 max_tx_rate);
2581 }
2582
2583 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2584 {
2585         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2586         struct mlx4_en_dev *mdev = en_priv->mdev;
2587
2588         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2589 }
2590
2591 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2592 {
2593         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2594         struct mlx4_en_dev *mdev = en_priv->mdev;
2595
2596         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2597 }
2598
2599 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2600 {
2601         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2602         struct mlx4_en_dev *mdev = en_priv->mdev;
2603
2604         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2605 }
2606
2607 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2608                                 struct ifla_vf_stats *vf_stats)
2609 {
2610         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2611         struct mlx4_en_dev *mdev = en_priv->mdev;
2612
2613         return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2614 }
2615
2616 #define PORT_ID_BYTE_LEN 8
2617 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2618                                     struct netdev_phys_item_id *ppid)
2619 {
2620         struct mlx4_en_priv *priv = netdev_priv(dev);
2621         struct mlx4_dev *mdev = priv->mdev->dev;
2622         int i;
2623         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2624
2625         if (!phys_port_id)
2626                 return -EOPNOTSUPP;
2627
2628         ppid->id_len = sizeof(phys_port_id);
2629         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2630                 ppid->id[i] =  phys_port_id & 0xff;
2631                 phys_port_id >>= 8;
2632         }
2633         return 0;
2634 }
2635
2636 static int mlx4_udp_tunnel_sync(struct net_device *dev, unsigned int table)
2637 {
2638         struct mlx4_en_priv *priv = netdev_priv(dev);
2639         struct udp_tunnel_info ti;
2640         int ret;
2641
2642         udp_tunnel_nic_get_port(dev, table, 0, &ti);
2643         priv->vxlan_port = ti.port;
2644
2645         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2646         if (ret)
2647                 return ret;
2648
2649         return mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2650                                    VXLAN_STEER_BY_OUTER_MAC,
2651                                    !!priv->vxlan_port);
2652 }
2653
2654 static const struct udp_tunnel_nic_info mlx4_udp_tunnels = {
2655         .sync_table     = mlx4_udp_tunnel_sync,
2656         .flags          = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
2657                           UDP_TUNNEL_NIC_INFO_IPV4_ONLY,
2658         .tables         = {
2659                 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
2660         },
2661 };
2662
2663 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2664                                                 struct net_device *dev,
2665                                                 netdev_features_t features)
2666 {
2667         features = vlan_features_check(skb, features);
2668         features = vxlan_features_check(skb, features);
2669
2670         /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2671          * support inner IPv6 checksums and segmentation so  we need to
2672          * strip that feature if this is an IPv6 encapsulated frame.
2673          */
2674         if (skb->encapsulation &&
2675             (skb->ip_summed == CHECKSUM_PARTIAL)) {
2676                 struct mlx4_en_priv *priv = netdev_priv(dev);
2677
2678                 if (!priv->vxlan_port ||
2679                     (ip_hdr(skb)->version != 4) ||
2680                     (udp_hdr(skb)->dest != priv->vxlan_port))
2681                         features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2682         }
2683
2684         return features;
2685 }
2686
2687 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2688 {
2689         struct mlx4_en_priv *priv = netdev_priv(dev);
2690         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][queue_index];
2691         struct mlx4_update_qp_params params;
2692         int err;
2693
2694         if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2695                 return -EOPNOTSUPP;
2696
2697         /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2698         if (maxrate >> 12) {
2699                 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2700                 params.rate_val  = maxrate / 1000;
2701         } else if (maxrate) {
2702                 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2703                 params.rate_val  = maxrate;
2704         } else { /* zero serves to revoke the QP rate-limitation */
2705                 params.rate_unit = 0;
2706                 params.rate_val  = 0;
2707         }
2708
2709         err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2710                              &params);
2711         return err;
2712 }
2713
2714 static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog)
2715 {
2716         struct mlx4_en_priv *priv = netdev_priv(dev);
2717         struct mlx4_en_dev *mdev = priv->mdev;
2718         struct mlx4_en_port_profile new_prof;
2719         struct bpf_prog *old_prog;
2720         struct mlx4_en_priv *tmp;
2721         int tx_changed = 0;
2722         int xdp_ring_num;
2723         int port_up = 0;
2724         int err;
2725         int i;
2726
2727         xdp_ring_num = prog ? priv->rx_ring_num : 0;
2728
2729         /* No need to reconfigure buffers when simply swapping the
2730          * program for a new one.
2731          */
2732         if (priv->tx_ring_num[TX_XDP] == xdp_ring_num) {
2733                 if (prog)
2734                         bpf_prog_add(prog, priv->rx_ring_num - 1);
2735
2736                 mutex_lock(&mdev->state_lock);
2737                 for (i = 0; i < priv->rx_ring_num; i++) {
2738                         old_prog = rcu_dereference_protected(
2739                                         priv->rx_ring[i]->xdp_prog,
2740                                         lockdep_is_held(&mdev->state_lock));
2741                         rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2742                         if (old_prog)
2743                                 bpf_prog_put(old_prog);
2744                 }
2745                 mutex_unlock(&mdev->state_lock);
2746                 return 0;
2747         }
2748
2749         if (!mlx4_en_check_xdp_mtu(dev, dev->mtu))
2750                 return -EOPNOTSUPP;
2751
2752         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
2753         if (!tmp)
2754                 return -ENOMEM;
2755
2756         if (prog)
2757                 bpf_prog_add(prog, priv->rx_ring_num - 1);
2758
2759         mutex_lock(&mdev->state_lock);
2760         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
2761         new_prof.tx_ring_num[TX_XDP] = xdp_ring_num;
2762
2763         if (priv->tx_ring_num[TX] + xdp_ring_num > MAX_TX_RINGS) {
2764                 tx_changed = 1;
2765                 new_prof.tx_ring_num[TX] =
2766                         MAX_TX_RINGS - ALIGN(xdp_ring_num, priv->prof->num_up);
2767                 en_warn(priv, "Reducing the number of TX rings, to not exceed the max total rings number.\n");
2768         }
2769
2770         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, false);
2771         if (err) {
2772                 if (prog)
2773                         bpf_prog_sub(prog, priv->rx_ring_num - 1);
2774                 goto unlock_out;
2775         }
2776
2777         if (priv->port_up) {
2778                 port_up = 1;
2779                 mlx4_en_stop_port(dev, 1);
2780         }
2781
2782         mlx4_en_safe_replace_resources(priv, tmp);
2783         if (tx_changed)
2784                 netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
2785
2786         for (i = 0; i < priv->rx_ring_num; i++) {
2787                 old_prog = rcu_dereference_protected(
2788                                         priv->rx_ring[i]->xdp_prog,
2789                                         lockdep_is_held(&mdev->state_lock));
2790                 rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2791                 if (old_prog)
2792                         bpf_prog_put(old_prog);
2793         }
2794
2795         if (port_up) {
2796                 err = mlx4_en_start_port(dev);
2797                 if (err) {
2798                         en_err(priv, "Failed starting port %d for XDP change\n",
2799                                priv->port);
2800                         if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state))
2801                                 queue_work(mdev->workqueue, &priv->restart_task);
2802                 }
2803         }
2804
2805 unlock_out:
2806         mutex_unlock(&mdev->state_lock);
2807         kfree(tmp);
2808         return err;
2809 }
2810
2811 static int mlx4_xdp(struct net_device *dev, struct netdev_bpf *xdp)
2812 {
2813         switch (xdp->command) {
2814         case XDP_SETUP_PROG:
2815                 return mlx4_xdp_set(dev, xdp->prog);
2816         default:
2817                 return -EINVAL;
2818         }
2819 }
2820
2821 static const struct net_device_ops mlx4_netdev_ops = {
2822         .ndo_open               = mlx4_en_open,
2823         .ndo_stop               = mlx4_en_close,
2824         .ndo_start_xmit         = mlx4_en_xmit,
2825         .ndo_select_queue       = mlx4_en_select_queue,
2826         .ndo_get_stats64        = mlx4_en_get_stats64,
2827         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2828         .ndo_set_mac_address    = mlx4_en_set_mac,
2829         .ndo_validate_addr      = eth_validate_addr,
2830         .ndo_change_mtu         = mlx4_en_change_mtu,
2831         .ndo_do_ioctl           = mlx4_en_ioctl,
2832         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2833         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2834         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2835         .ndo_set_features       = mlx4_en_set_features,
2836         .ndo_fix_features       = mlx4_en_fix_features,
2837         .ndo_setup_tc           = __mlx4_en_setup_tc,
2838 #ifdef CONFIG_RFS_ACCEL
2839         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2840 #endif
2841         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2842         .ndo_features_check     = mlx4_en_features_check,
2843         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2844         .ndo_bpf                = mlx4_xdp,
2845 };
2846
2847 static const struct net_device_ops mlx4_netdev_ops_master = {
2848         .ndo_open               = mlx4_en_open,
2849         .ndo_stop               = mlx4_en_close,
2850         .ndo_start_xmit         = mlx4_en_xmit,
2851         .ndo_select_queue       = mlx4_en_select_queue,
2852         .ndo_get_stats64        = mlx4_en_get_stats64,
2853         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2854         .ndo_set_mac_address    = mlx4_en_set_mac,
2855         .ndo_validate_addr      = eth_validate_addr,
2856         .ndo_change_mtu         = mlx4_en_change_mtu,
2857         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2858         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2859         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2860         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2861         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2862         .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2863         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2864         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2865         .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2866         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2867         .ndo_set_features       = mlx4_en_set_features,
2868         .ndo_fix_features       = mlx4_en_fix_features,
2869         .ndo_setup_tc           = __mlx4_en_setup_tc,
2870 #ifdef CONFIG_RFS_ACCEL
2871         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2872 #endif
2873         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2874         .ndo_features_check     = mlx4_en_features_check,
2875         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2876         .ndo_bpf                = mlx4_xdp,
2877 };
2878
2879 struct mlx4_en_bond {
2880         struct work_struct work;
2881         struct mlx4_en_priv *priv;
2882         int is_bonded;
2883         struct mlx4_port_map port_map;
2884 };
2885
2886 static void mlx4_en_bond_work(struct work_struct *work)
2887 {
2888         struct mlx4_en_bond *bond = container_of(work,
2889                                                      struct mlx4_en_bond,
2890                                                      work);
2891         int err = 0;
2892         struct mlx4_dev *dev = bond->priv->mdev->dev;
2893
2894         if (bond->is_bonded) {
2895                 if (!mlx4_is_bonded(dev)) {
2896                         err = mlx4_bond(dev);
2897                         if (err)
2898                                 en_err(bond->priv, "Fail to bond device\n");
2899                 }
2900                 if (!err) {
2901                         err = mlx4_port_map_set(dev, &bond->port_map);
2902                         if (err)
2903                                 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2904                                        bond->port_map.port1,
2905                                        bond->port_map.port2,
2906                                        err);
2907                 }
2908         } else if (mlx4_is_bonded(dev)) {
2909                 err = mlx4_unbond(dev);
2910                 if (err)
2911                         en_err(bond->priv, "Fail to unbond device\n");
2912         }
2913         dev_put(bond->priv->dev);
2914         kfree(bond);
2915 }
2916
2917 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
2918                                    u8 v2p_p1, u8 v2p_p2)
2919 {
2920         struct mlx4_en_bond *bond = NULL;
2921
2922         bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
2923         if (!bond)
2924                 return -ENOMEM;
2925
2926         INIT_WORK(&bond->work, mlx4_en_bond_work);
2927         bond->priv = priv;
2928         bond->is_bonded = is_bonded;
2929         bond->port_map.port1 = v2p_p1;
2930         bond->port_map.port2 = v2p_p2;
2931         dev_hold(priv->dev);
2932         queue_work(priv->mdev->workqueue, &bond->work);
2933         return 0;
2934 }
2935
2936 int mlx4_en_netdev_event(struct notifier_block *this,
2937                          unsigned long event, void *ptr)
2938 {
2939         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2940         u8 port = 0;
2941         struct mlx4_en_dev *mdev;
2942         struct mlx4_dev *dev;
2943         int i, num_eth_ports = 0;
2944         bool do_bond = true;
2945         struct mlx4_en_priv *priv;
2946         u8 v2p_port1 = 0;
2947         u8 v2p_port2 = 0;
2948
2949         if (!net_eq(dev_net(ndev), &init_net))
2950                 return NOTIFY_DONE;
2951
2952         mdev = container_of(this, struct mlx4_en_dev, nb);
2953         dev = mdev->dev;
2954
2955         /* Go into this mode only when two network devices set on two ports
2956          * of the same mlx4 device are slaves of the same bonding master
2957          */
2958         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2959                 ++num_eth_ports;
2960                 if (!port && (mdev->pndev[i] == ndev))
2961                         port = i;
2962                 mdev->upper[i] = mdev->pndev[i] ?
2963                         netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2964                 /* condition not met: network device is a slave */
2965                 if (!mdev->upper[i])
2966                         do_bond = false;
2967                 if (num_eth_ports < 2)
2968                         continue;
2969                 /* condition not met: same master */
2970                 if (mdev->upper[i] != mdev->upper[i-1])
2971                         do_bond = false;
2972         }
2973         /* condition not met: 2 salves */
2974         do_bond = (num_eth_ports ==  2) ? do_bond : false;
2975
2976         /* handle only events that come with enough info */
2977         if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2978                 return NOTIFY_DONE;
2979
2980         priv = netdev_priv(ndev);
2981         if (do_bond) {
2982                 struct netdev_notifier_bonding_info *notifier_info = ptr;
2983                 struct netdev_bonding_info *bonding_info =
2984                         &notifier_info->bonding_info;
2985
2986                 /* required mode 1, 2 or 4 */
2987                 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2988                     (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2989                     (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2990                         do_bond = false;
2991
2992                 /* require exactly 2 slaves */
2993                 if (bonding_info->master.num_slaves != 2)
2994                         do_bond = false;
2995
2996                 /* calc v2p */
2997                 if (do_bond) {
2998                         if (bonding_info->master.bond_mode ==
2999                             BOND_MODE_ACTIVEBACKUP) {
3000                                 /* in active-backup mode virtual ports are
3001                                  * mapped to the physical port of the active
3002                                  * slave */
3003                                 if (bonding_info->slave.state ==
3004                                     BOND_STATE_BACKUP) {
3005                                         if (port == 1) {
3006                                                 v2p_port1 = 2;
3007                                                 v2p_port2 = 2;
3008                                         } else {
3009                                                 v2p_port1 = 1;
3010                                                 v2p_port2 = 1;
3011                                         }
3012                                 } else { /* BOND_STATE_ACTIVE */
3013                                         if (port == 1) {
3014                                                 v2p_port1 = 1;
3015                                                 v2p_port2 = 1;
3016                                         } else {
3017                                                 v2p_port1 = 2;
3018                                                 v2p_port2 = 2;
3019                                         }
3020                                 }
3021                         } else { /* Active-Active */
3022                                 /* in active-active mode a virtual port is
3023                                  * mapped to the native physical port if and only
3024                                  * if the physical port is up */
3025                                 __s8 link = bonding_info->slave.link;
3026
3027                                 if (port == 1)
3028                                         v2p_port2 = 2;
3029                                 else
3030                                         v2p_port1 = 1;
3031                                 if ((link == BOND_LINK_UP) ||
3032                                     (link == BOND_LINK_FAIL)) {
3033                                         if (port == 1)
3034                                                 v2p_port1 = 1;
3035                                         else
3036                                                 v2p_port2 = 2;
3037                                 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
3038                                         if (port == 1)
3039                                                 v2p_port1 = 2;
3040                                         else
3041                                                 v2p_port2 = 1;
3042                                 }
3043                         }
3044                 }
3045         }
3046
3047         mlx4_en_queue_bond_work(priv, do_bond,
3048                                 v2p_port1, v2p_port2);
3049
3050         return NOTIFY_DONE;
3051 }
3052
3053 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
3054                                      struct mlx4_en_stats_bitmap *stats_bitmap,
3055                                      u8 rx_ppp, u8 rx_pause,
3056                                      u8 tx_ppp, u8 tx_pause)
3057 {
3058         int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
3059
3060         if (!mlx4_is_slave(dev) &&
3061             (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
3062                 mutex_lock(&stats_bitmap->mutex);
3063                 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
3064
3065                 if (rx_ppp)
3066                         bitmap_set(stats_bitmap->bitmap, last_i,
3067                                    NUM_FLOW_PRIORITY_STATS_RX);
3068                 last_i += NUM_FLOW_PRIORITY_STATS_RX;
3069
3070                 if (rx_pause && !(rx_ppp))
3071                         bitmap_set(stats_bitmap->bitmap, last_i,
3072                                    NUM_FLOW_STATS_RX);
3073                 last_i += NUM_FLOW_STATS_RX;
3074
3075                 if (tx_ppp)
3076                         bitmap_set(stats_bitmap->bitmap, last_i,
3077                                    NUM_FLOW_PRIORITY_STATS_TX);
3078                 last_i += NUM_FLOW_PRIORITY_STATS_TX;
3079
3080                 if (tx_pause && !(tx_ppp))
3081                         bitmap_set(stats_bitmap->bitmap, last_i,
3082                                    NUM_FLOW_STATS_TX);
3083                 last_i += NUM_FLOW_STATS_TX;
3084
3085                 mutex_unlock(&stats_bitmap->mutex);
3086         }
3087 }
3088
3089 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
3090                               struct mlx4_en_stats_bitmap *stats_bitmap,
3091                               u8 rx_ppp, u8 rx_pause,
3092                               u8 tx_ppp, u8 tx_pause)
3093 {
3094         int last_i = 0;
3095
3096         mutex_init(&stats_bitmap->mutex);
3097         bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
3098
3099         if (mlx4_is_slave(dev)) {
3100                 bitmap_set(stats_bitmap->bitmap, last_i +
3101                                          MLX4_FIND_NETDEV_STAT(rx_packets), 1);
3102                 bitmap_set(stats_bitmap->bitmap, last_i +
3103                                          MLX4_FIND_NETDEV_STAT(tx_packets), 1);
3104                 bitmap_set(stats_bitmap->bitmap, last_i +
3105                                          MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
3106                 bitmap_set(stats_bitmap->bitmap, last_i +
3107                                          MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
3108                 bitmap_set(stats_bitmap->bitmap, last_i +
3109                                          MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
3110                 bitmap_set(stats_bitmap->bitmap, last_i +
3111                                          MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
3112         } else {
3113                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
3114         }
3115         last_i += NUM_MAIN_STATS;
3116
3117         bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
3118         last_i += NUM_PORT_STATS;
3119
3120         if (mlx4_is_master(dev))
3121                 bitmap_set(stats_bitmap->bitmap, last_i,
3122                            NUM_PF_STATS);
3123         last_i += NUM_PF_STATS;
3124
3125         mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
3126                                         rx_ppp, rx_pause,
3127                                         tx_ppp, tx_pause);
3128         last_i += NUM_FLOW_STATS;
3129
3130         if (!mlx4_is_slave(dev))
3131                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
3132         last_i += NUM_PKT_STATS;
3133
3134         bitmap_set(stats_bitmap->bitmap, last_i, NUM_XDP_STATS);
3135         last_i += NUM_XDP_STATS;
3136
3137         if (!mlx4_is_slave(dev))
3138                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PHY_STATS);
3139         last_i += NUM_PHY_STATS;
3140 }
3141
3142 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
3143                         struct mlx4_en_port_profile *prof)
3144 {
3145         struct net_device *dev;
3146         struct mlx4_en_priv *priv;
3147         int i, t;
3148         int err;
3149
3150         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
3151                                  MAX_TX_RINGS, MAX_RX_RINGS);
3152         if (dev == NULL)
3153                 return -ENOMEM;
3154
3155         netif_set_real_num_tx_queues(dev, prof->tx_ring_num[TX]);
3156         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
3157
3158         SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
3159         dev->dev_port = port - 1;
3160
3161         /*
3162          * Initialize driver private data
3163          */
3164
3165         priv = netdev_priv(dev);
3166         memset(priv, 0, sizeof(struct mlx4_en_priv));
3167         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
3168         spin_lock_init(&priv->stats_lock);
3169         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
3170         INIT_WORK(&priv->restart_task, mlx4_en_restart);
3171         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
3172         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
3173         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
3174 #ifdef CONFIG_RFS_ACCEL
3175         INIT_LIST_HEAD(&priv->filters);
3176         spin_lock_init(&priv->filters_lock);
3177 #endif
3178
3179         priv->dev = dev;
3180         priv->mdev = mdev;
3181         priv->ddev = &mdev->pdev->dev;
3182         priv->prof = prof;
3183         priv->port = port;
3184         priv->port_up = false;
3185         priv->flags = prof->flags;
3186         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
3187         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
3188                         MLX4_WQE_CTRL_SOLICITED);
3189         priv->num_tx_rings_p_up = mdev->profile.max_num_tx_rings_p_up;
3190         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
3191         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
3192
3193         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
3194                 priv->tx_ring_num[t] = prof->tx_ring_num[t];
3195                 if (!priv->tx_ring_num[t])
3196                         continue;
3197
3198                 priv->tx_ring[t] = kcalloc(MAX_TX_RINGS,
3199                                            sizeof(struct mlx4_en_tx_ring *),
3200                                            GFP_KERNEL);
3201                 if (!priv->tx_ring[t]) {
3202                         err = -ENOMEM;
3203                         goto out;
3204                 }
3205                 priv->tx_cq[t] = kcalloc(MAX_TX_RINGS,
3206                                          sizeof(struct mlx4_en_cq *),
3207                                          GFP_KERNEL);
3208                 if (!priv->tx_cq[t]) {
3209                         err = -ENOMEM;
3210                         goto out;
3211                 }
3212         }
3213         priv->rx_ring_num = prof->rx_ring_num;
3214         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
3215         priv->cqe_size = mdev->dev->caps.cqe_size;
3216         priv->mac_index = -1;
3217         priv->msg_enable = MLX4_EN_MSG_LEVEL;
3218 #ifdef CONFIG_MLX4_EN_DCB
3219         if (!mlx4_is_slave(priv->mdev->dev)) {
3220                 u8 prio;
3221
3222                 for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; ++prio) {
3223                         priv->ets.prio_tc[prio] = prio;
3224                         priv->ets.tc_tsa[prio]  = IEEE_8021QAZ_TSA_VENDOR;
3225                 }
3226
3227                 priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST |
3228                         DCB_CAP_DCBX_VER_IEEE;
3229                 priv->flags |= MLX4_EN_DCB_ENABLED;
3230                 priv->cee_config.pfc_state = false;
3231
3232                 for (i = 0; i < MLX4_EN_NUM_UP_HIGH; i++)
3233                         priv->cee_config.dcb_pfc[i] = pfc_disabled;
3234
3235                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
3236                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
3237                 } else {
3238                         en_info(priv, "enabling only PFC DCB ops\n");
3239                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
3240                 }
3241         }
3242 #endif
3243
3244         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
3245                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
3246
3247         /* Query for default mac and max mtu */
3248         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
3249
3250         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
3251             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
3252                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3253
3254         /* Set default MAC */
3255         dev->addr_len = ETH_ALEN;
3256         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
3257         if (!is_valid_ether_addr(dev->dev_addr)) {
3258                 en_err(priv, "Port: %d, invalid mac burned: %pM, quitting\n",
3259                        priv->port, dev->dev_addr);
3260                 err = -EINVAL;
3261                 goto out;
3262         } else if (mlx4_is_slave(priv->mdev->dev) &&
3263                    (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3264                 /* Random MAC was assigned in mlx4_slave_cap
3265                  * in mlx4_core module
3266                  */
3267                 dev->addr_assign_type |= NET_ADDR_RANDOM;
3268                 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3269         }
3270
3271         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3272
3273         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3274                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3275         err = mlx4_en_alloc_resources(priv);
3276         if (err)
3277                 goto out;
3278
3279         /* Initialize time stamping config */
3280         priv->hwtstamp_config.flags = 0;
3281         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3282         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3283
3284         /* Allocate page for receive rings */
3285         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
3286                                 MLX4_EN_PAGE_SIZE);
3287         if (err) {
3288                 en_err(priv, "Failed to allocate page for rx qps\n");
3289                 goto out;
3290         }
3291         priv->allocated = 1;
3292
3293         /*
3294          * Initialize netdev entry points
3295          */
3296         if (mlx4_is_master(priv->mdev->dev))
3297                 dev->netdev_ops = &mlx4_netdev_ops_master;
3298         else
3299                 dev->netdev_ops = &mlx4_netdev_ops;
3300         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3301         netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
3302         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
3303
3304         dev->ethtool_ops = &mlx4_en_ethtool_ops;
3305
3306         /*
3307          * Set driver features
3308          */
3309         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3310         if (mdev->LSO_support)
3311                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3312
3313         if (mdev->dev->caps.tunnel_offload_mode ==
3314             MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3315                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3316                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3317                                     NETIF_F_GSO_PARTIAL;
3318                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL |
3319                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3320                                     NETIF_F_GSO_PARTIAL;
3321                 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3322                 dev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3323                                        NETIF_F_RXCSUM |
3324                                        NETIF_F_TSO | NETIF_F_TSO6 |
3325                                        NETIF_F_GSO_UDP_TUNNEL |
3326                                        NETIF_F_GSO_UDP_TUNNEL_CSUM |
3327                                        NETIF_F_GSO_PARTIAL;
3328
3329                 dev->udp_tunnel_nic_info = &mlx4_udp_tunnels;
3330         }
3331
3332         dev->vlan_features = dev->hw_features;
3333
3334         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3335         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3336                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3337                         NETIF_F_HW_VLAN_CTAG_FILTER;
3338         dev->hw_features |= NETIF_F_LOOPBACK |
3339                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3340
3341         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3342                 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3343                         NETIF_F_HW_VLAN_STAG_FILTER;
3344                 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3345         }
3346
3347         if (mlx4_is_slave(mdev->dev)) {
3348                 bool vlan_offload_disabled;
3349                 int phv;
3350
3351                 err = get_phv_bit(mdev->dev, port, &phv);
3352                 if (!err && phv) {
3353                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3354                         priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3355                 }
3356                 err = mlx4_get_is_vlan_offload_disabled(mdev->dev, port,
3357                                                         &vlan_offload_disabled);
3358                 if (!err && vlan_offload_disabled) {
3359                         dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3360                                               NETIF_F_HW_VLAN_CTAG_RX |
3361                                               NETIF_F_HW_VLAN_STAG_TX |
3362                                               NETIF_F_HW_VLAN_STAG_RX);
3363                         dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3364                                            NETIF_F_HW_VLAN_CTAG_RX |
3365                                            NETIF_F_HW_VLAN_STAG_TX |
3366                                            NETIF_F_HW_VLAN_STAG_RX);
3367                 }
3368         } else {
3369                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3370                     !(mdev->dev->caps.flags2 &
3371                       MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3372                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3373         }
3374
3375         if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3376                 dev->hw_features |= NETIF_F_RXFCS;
3377
3378         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3379                 dev->hw_features |= NETIF_F_RXALL;
3380
3381         if (mdev->dev->caps.steering_mode ==
3382             MLX4_STEERING_MODE_DEVICE_MANAGED &&
3383             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3384                 dev->hw_features |= NETIF_F_NTUPLE;
3385
3386         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3387                 dev->priv_flags |= IFF_UNICAST_FLT;
3388
3389         /* Setting a default hash function value */
3390         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3391                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3392         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3393                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3394         } else {
3395                 en_warn(priv,
3396                         "No RSS hash capabilities exposed, using Toeplitz\n");
3397                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3398         }
3399
3400         /* MTU range: 68 - hw-specific max */
3401         dev->min_mtu = ETH_MIN_MTU;
3402         dev->max_mtu = priv->max_mtu;
3403
3404         mdev->pndev[port] = dev;
3405         mdev->upper[port] = NULL;
3406
3407         netif_carrier_off(dev);
3408         mlx4_en_set_default_moderation(priv);
3409
3410         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num[TX]);
3411         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3412
3413         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3414
3415         /* Configure port */
3416         mlx4_en_calc_rx_buf(dev);
3417         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3418                                     priv->rx_skb_size + ETH_FCS_LEN,
3419                                     prof->tx_pause, prof->tx_ppp,
3420                                     prof->rx_pause, prof->rx_ppp);
3421         if (err) {
3422                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3423                        priv->port, err);
3424                 goto out;
3425         }
3426
3427         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3428                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3429                 if (err) {
3430                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3431                                err);
3432                         goto out;
3433                 }
3434         }
3435
3436         /* Init port */
3437         en_warn(priv, "Initializing port\n");
3438         err = mlx4_INIT_PORT(mdev->dev, priv->port);
3439         if (err) {
3440                 en_err(priv, "Failed Initializing port\n");
3441                 goto out;
3442         }
3443         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3444
3445         /* Initialize time stamp mechanism */
3446         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3447                 mlx4_en_init_timestamp(mdev);
3448
3449         queue_delayed_work(mdev->workqueue, &priv->service_task,
3450                            SERVICE_TASK_DELAY);
3451
3452         mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3453                                  mdev->profile.prof[priv->port].rx_ppp,
3454                                  mdev->profile.prof[priv->port].rx_pause,
3455                                  mdev->profile.prof[priv->port].tx_ppp,
3456                                  mdev->profile.prof[priv->port].tx_pause);
3457
3458         err = register_netdev(dev);
3459         if (err) {
3460                 en_err(priv, "Netdev registration failed for port %d\n", port);
3461                 goto out;
3462         }
3463
3464         priv->registered = 1;
3465         devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
3466                                   dev);
3467
3468         return 0;
3469
3470 out:
3471         mlx4_en_destroy_netdev(dev);
3472         return err;
3473 }
3474
3475 int mlx4_en_reset_config(struct net_device *dev,
3476                          struct hwtstamp_config ts_config,
3477                          netdev_features_t features)
3478 {
3479         struct mlx4_en_priv *priv = netdev_priv(dev);
3480         struct mlx4_en_dev *mdev = priv->mdev;
3481         struct mlx4_en_port_profile new_prof;
3482         struct mlx4_en_priv *tmp;
3483         int port_up = 0;
3484         int err = 0;
3485
3486         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3487             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3488             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3489             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3490                 return 0; /* Nothing to change */
3491
3492         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3493             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3494             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3495                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3496                 return -EINVAL;
3497         }
3498
3499         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
3500         if (!tmp)
3501                 return -ENOMEM;
3502
3503         mutex_lock(&mdev->state_lock);
3504
3505         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3506         memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config));
3507
3508         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
3509         if (err)
3510                 goto out;
3511
3512         if (priv->port_up) {
3513                 port_up = 1;
3514                 mlx4_en_stop_port(dev, 1);
3515         }
3516
3517         mlx4_en_safe_replace_resources(priv, tmp);
3518
3519         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3520                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3521                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3522                 else
3523                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3524         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3525                 /* RX time-stamping is OFF, update the RX vlan offload
3526                  * to the latest wanted state
3527                  */
3528                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3529                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3530                 else
3531                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3532         }
3533
3534         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3535                 if (features & NETIF_F_RXFCS)
3536                         dev->features |= NETIF_F_RXFCS;
3537                 else
3538                         dev->features &= ~NETIF_F_RXFCS;
3539         }
3540
3541         /* RX vlan offload and RX time-stamping can't co-exist !
3542          * Regardless of the caller's choice,
3543          * Turn Off RX vlan offload in case of time-stamping is ON
3544          */
3545         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3546                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3547                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3548                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3549         }
3550
3551         if (port_up) {
3552                 err = mlx4_en_start_port(dev);
3553                 if (err)
3554                         en_err(priv, "Failed starting port\n");
3555         }
3556
3557         if (!err)
3558                 err = mlx4_en_moderation_update(priv);
3559 out:
3560         mutex_unlock(&mdev->state_lock);
3561         kfree(tmp);
3562         if (!err)
3563                 netdev_features_change(dev);
3564         return err;
3565 }