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/etherdevice.h>
  35 #include <linux/tcp.h>
  36 #include <linux/if_vlan.h>
  37 #include <linux/delay.h>
  38 #include <linux/slab.h>
  39 #include <linux/hash.h>
  40 #include <net/ip.h>
  41 #include <net/busy_poll.h>
  42 #include <net/vxlan.h>
  43
  44 #include <linux/mlx4/driver.h>
  45 #include <linux/mlx4/device.h>
  46 #include <linux/mlx4/cmd.h>
  47 #include <linux/mlx4/cq.h>
  48
  49 #include "mlx4_en.h"
  50 #include "en_port.h"
  51
  52 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  53 {
  54         struct mlx4_en_priv *priv = netdev_priv(dev);
  55         int i;
  56         unsigned int offset = 0;
  57
  58         if (up && up != MLX4_EN_NUM_UP)
  59                 return -EINVAL;
  60
  61         netdev_set_num_tc(dev, up);
  62
  63         /* Partition Tx queues evenly amongst UP's */
  64         for (i = 0; i < up; i++) {
  65                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  66                 offset += priv->num_tx_rings_p_up;
  67         }
  68
  69         return 0;
  70 }
  71
  72 #ifdef CONFIG_NET_RX_BUSY_POLL
  73 /* must be called with local_bh_disable()d */
  74 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
  75 {
  76         struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
  77         struct net_device *dev = cq->dev;
  78         struct mlx4_en_priv *priv = netdev_priv(dev);
  79         struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
  80         int done;
  81
  82         if (!priv->port_up)
  83                 return LL_FLUSH_FAILED;
  84
  85         if (!mlx4_en_cq_lock_poll(cq))
  86                 return LL_FLUSH_BUSY;
  87
  88         done = mlx4_en_process_rx_cq(dev, cq, 4);
  89         if (likely(done))
  90                 rx_ring->cleaned += done;
  91         else
  92                 rx_ring->misses++;
  93
  94         mlx4_en_cq_unlock_poll(cq);
  95
  96         return done;
  97 }
  98 #endif  /* CONFIG_NET_RX_BUSY_POLL */
  99
 100 #ifdef CONFIG_RFS_ACCEL
 101
 102 struct mlx4_en_filter {
 103         struct list_head next;
 104         struct work_struct work;
 105
 106         u8     ip_proto;
 107         __be32 src_ip;
 108         __be32 dst_ip;
 109         __be16 src_port;
 110         __be16 dst_port;
 111
 112         int rxq_index;
 113         struct mlx4_en_priv *priv;
 114         u32 flow_id;                    /* RFS infrastructure id */
 115         int id;                         /* mlx4_en driver id */
 116         u64 reg_id;                     /* Flow steering API id */
 117         u8 activated;                   /* Used to prevent expiry before filter
 118                                          * is attached
 119                                          */
 120         struct hlist_node filter_chain;
 121 };
 122
 123 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 124
 125 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 126 {
 127         switch (ip_proto) {
 128         case IPPROTO_UDP:
 129                 return MLX4_NET_TRANS_RULE_ID_UDP;
 130         case IPPROTO_TCP:
 131                 return MLX4_NET_TRANS_RULE_ID_TCP;
 132         default:
 133                 return MLX4_NET_TRANS_RULE_NUM;
 134         }
 135 };
 136
 137 static void mlx4_en_filter_work(struct work_struct *work)
 138 {
 139         struct mlx4_en_filter *filter = container_of(work,
 140                                                      struct mlx4_en_filter,
 141                                                      work);
 142         struct mlx4_en_priv *priv = filter->priv;
 143         struct mlx4_spec_list spec_tcp_udp = {
 144                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 145                 {
 146                         .tcp_udp = {
 147                                 .dst_port = filter->dst_port,
 148                                 .dst_port_msk = (__force __be16)-1,
 149                                 .src_port = filter->src_port,
 150                                 .src_port_msk = (__force __be16)-1,
 151                         },
 152                 },
 153         };
 154         struct mlx4_spec_list spec_ip = {
 155                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 156                 {
 157                         .ipv4 = {
 158                                 .dst_ip = filter->dst_ip,
 159                                 .dst_ip_msk = (__force __be32)-1,
 160                                 .src_ip = filter->src_ip,
 161                                 .src_ip_msk = (__force __be32)-1,
 162                         },
 163                 },
 164         };
 165         struct mlx4_spec_list spec_eth = {
 166                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 167         };
 168         struct mlx4_net_trans_rule rule = {
 169                 .list = LIST_HEAD_INIT(rule.list),
 170                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 171                 .exclusive = 1,
 172                 .allow_loopback = 1,
 173                 .promisc_mode = MLX4_FS_REGULAR,
 174                 .port = priv->port,
 175                 .priority = MLX4_DOMAIN_RFS,
 176         };
 177         int rc;
 178         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 179
 180         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 181                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 182                         filter->ip_proto);
 183                 goto ignore;
 184         }
 185         list_add_tail(&spec_eth.list, &rule.list);
 186         list_add_tail(&spec_ip.list, &rule.list);
 187         list_add_tail(&spec_tcp_udp.list, &rule.list);
 188
 189         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 190         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 191         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 192
 193         filter->activated = 0;
 194
 195         if (filter->reg_id) {
 196                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 197                 if (rc && rc != -ENOENT)
 198                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 199         }
 200
 201         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 202         if (rc)
 203                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 204
 205 ignore:
 206         mlx4_en_filter_rfs_expire(priv);
 207
 208         filter->activated = 1;
 209 }
 210
 211 static inline struct hlist_head *
 212 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 213                    __be16 src_port, __be16 dst_port)
 214 {
 215         unsigned long l;
 216         int bucket_idx;
 217
 218         l = (__force unsigned long)src_port |
 219             ((__force unsigned long)dst_port << 2);
 220         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 221
 222         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 223
 224         return &priv->filter_hash[bucket_idx];
 225 }
 226
 227 static struct mlx4_en_filter *
 228 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 229                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 230                      __be16 dst_port, u32 flow_id)
 231 {
 232         struct mlx4_en_filter *filter = NULL;
 233
 234         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 235         if (!filter)
 236                 return NULL;
 237
 238         filter->priv = priv;
 239         filter->rxq_index = rxq_index;
 240         INIT_WORK(&filter->work, mlx4_en_filter_work);
 241
 242         filter->src_ip = src_ip;
 243         filter->dst_ip = dst_ip;
 244         filter->ip_proto = ip_proto;
 245         filter->src_port = src_port;
 246         filter->dst_port = dst_port;
 247
 248         filter->flow_id = flow_id;
 249
 250         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 251
 252         list_add_tail(&filter->next, &priv->filters);
 253         hlist_add_head(&filter->filter_chain,
 254                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 255                                           dst_port));
 256
 257         return filter;
 258 }
 259
 260 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 261 {
 262         struct mlx4_en_priv *priv = filter->priv;
 263         int rc;
 264
 265         list_del(&filter->next);
 266
 267         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 268         if (rc && rc != -ENOENT)
 269                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 270
 271         kfree(filter);
 272 }
 273
 274 static inline struct mlx4_en_filter *
 275 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 276                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 277 {
 278         struct mlx4_en_filter *filter;
 279         struct mlx4_en_filter *ret = NULL;
 280
 281         hlist_for_each_entry(filter,
 282                              filter_hash_bucket(priv, src_ip, dst_ip,
 283                                                 src_port, dst_port),
 284                              filter_chain) {
 285                 if (filter->src_ip == src_ip &&
 286                     filter->dst_ip == dst_ip &&
 287                     filter->ip_proto == ip_proto &&
 288                     filter->src_port == src_port &&
 289                     filter->dst_port == dst_port) {
 290                         ret = filter;
 291                         break;
 292                 }
 293         }
 294
 295         return ret;
 296 }
 297
 298 static int
 299 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 300                    u16 rxq_index, u32 flow_id)
 301 {
 302         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 303         struct mlx4_en_filter *filter;
 304         const struct iphdr *ip;
 305         const __be16 *ports;
 306         u8 ip_proto;
 307         __be32 src_ip;
 308         __be32 dst_ip;
 309         __be16 src_port;
 310         __be16 dst_port;
 311         int nhoff = skb_network_offset(skb);
 312         int ret = 0;
 313
 314         if (skb->protocol != htons(ETH_P_IP))
 315                 return -EPROTONOSUPPORT;
 316
 317         ip = (const struct iphdr *)(skb->data + nhoff);
 318         if (ip_is_fragment(ip))
 319                 return -EPROTONOSUPPORT;
 320
 321         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 322                 return -EPROTONOSUPPORT;
 323         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 324
 325         ip_proto = ip->protocol;
 326         src_ip = ip->saddr;
 327         dst_ip = ip->daddr;
 328         src_port = ports[0];
 329         dst_port = ports[1];
 330
 331         spin_lock_bh(&priv->filters_lock);
 332         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 333                                      src_port, dst_port);
 334         if (filter) {
 335                 if (filter->rxq_index == rxq_index)
 336                         goto out;
 337
 338                 filter->rxq_index = rxq_index;
 339         } else {
 340                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 341                                               src_ip, dst_ip, ip_proto,
 342                                               src_port, dst_port, flow_id);
 343                 if (!filter) {
 344                         ret = -ENOMEM;
 345                         goto err;
 346                 }
 347         }
 348
 349         queue_work(priv->mdev->workqueue, &filter->work);
 350
 351 out:
 352         ret = filter->id;
 353 err:
 354         spin_unlock_bh(&priv->filters_lock);
 355
 356         return ret;
 357 }
 358
 359 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 360 {
 361         struct mlx4_en_filter *filter, *tmp;
 362         LIST_HEAD(del_list);
 363
 364         spin_lock_bh(&priv->filters_lock);
 365         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 366                 list_move(&filter->next, &del_list);
 367                 hlist_del(&filter->filter_chain);
 368         }
 369         spin_unlock_bh(&priv->filters_lock);
 370
 371         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 372                 cancel_work_sync(&filter->work);
 373                 mlx4_en_filter_free(filter);
 374         }
 375 }
 376
 377 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 378 {
 379         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 380         LIST_HEAD(del_list);
 381         int i = 0;
 382
 383         spin_lock_bh(&priv->filters_lock);
 384         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 385                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 386                         break;
 387
 388                 if (filter->activated &&
 389                     !work_pending(&filter->work) &&
 390                     rps_may_expire_flow(priv->dev,
 391                                         filter->rxq_index, filter->flow_id,
 392                                         filter->id)) {
 393                         list_move(&filter->next, &del_list);
 394                         hlist_del(&filter->filter_chain);
 395                 } else
 396                         last_filter = filter;
 397
 398                 i++;
 399         }
 400
 401         if (last_filter && (&last_filter->next != priv->filters.next))
 402                 list_move(&priv->filters, &last_filter->next);
 403
 404         spin_unlock_bh(&priv->filters_lock);
 405
 406         list_for_each_entry_safe(filter, tmp, &del_list, next)
 407                 mlx4_en_filter_free(filter);
 408 }
 409 #endif
 410
 411 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 412                                    __be16 proto, u16 vid)
 413 {
 414         struct mlx4_en_priv *priv = netdev_priv(dev);
 415         struct mlx4_en_dev *mdev = priv->mdev;
 416         int err;
 417         int idx;
 418
 419         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 420
 421         set_bit(vid, priv->active_vlans);
 422
 423         /* Add VID to port VLAN filter */
 424         mutex_lock(&mdev->state_lock);
 425         if (mdev->device_up && priv->port_up) {
 426                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 427                 if (err)
 428                         en_err(priv, "Failed configuring VLAN filter\n");
 429         }
 430         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 431                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 432         mutex_unlock(&mdev->state_lock);
 433
 434         return 0;
 435 }
 436
 437 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 438                                     __be16 proto, u16 vid)
 439 {
 440         struct mlx4_en_priv *priv = netdev_priv(dev);
 441         struct mlx4_en_dev *mdev = priv->mdev;
 442         int err;
 443
 444         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 445
 446         clear_bit(vid, priv->active_vlans);
 447
 448         /* Remove VID from port VLAN filter */
 449         mutex_lock(&mdev->state_lock);
 450         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 451
 452         if (mdev->device_up && priv->port_up) {
 453                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 454                 if (err)
 455                         en_err(priv, "Failed configuring VLAN filter\n");
 456         }
 457         mutex_unlock(&mdev->state_lock);
 458
 459         return 0;
 460 }
 461
 462 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 463 {
 464         int i;
 465         for (i = ETH_ALEN - 1; i >= 0; --i) {
 466                 dst_mac[i] = src_mac & 0xff;
 467                 src_mac >>= 8;
 468         }
 469         memset(&dst_mac[ETH_ALEN], 0, 2);
 470 }
 471
 472
 473 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 474                                     int qpn, u64 *reg_id)
 475 {
 476         int err;
 477
 478         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 479             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 480                 return 0; /* do nothing */
 481
 482         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 483                                     MLX4_DOMAIN_NIC, reg_id);
 484         if (err) {
 485                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 486                 return err;
 487         }
 488         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 489         return 0;
 490 }
 491
 492
 493 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 494                                 unsigned char *mac, int *qpn, u64 *reg_id)
 495 {
 496         struct mlx4_en_dev *mdev = priv->mdev;
 497         struct mlx4_dev *dev = mdev->dev;
 498         int err;
 499
 500         switch (dev->caps.steering_mode) {
 501         case MLX4_STEERING_MODE_B0: {
 502                 struct mlx4_qp qp;
 503                 u8 gid[16] = {0};
 504
 505                 qp.qpn = *qpn;
 506                 memcpy(&gid[10], mac, ETH_ALEN);
 507                 gid[5] = priv->port;
 508
 509                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 510                 break;
 511         }
 512         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 513                 struct mlx4_spec_list spec_eth = { {NULL} };
 514                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 515
 516                 struct mlx4_net_trans_rule rule = {
 517                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 518                         .exclusive = 0,
 519                         .allow_loopback = 1,
 520                         .promisc_mode = MLX4_FS_REGULAR,
 521                         .priority = MLX4_DOMAIN_NIC,
 522                 };
 523
 524                 rule.port = priv->port;
 525                 rule.qpn = *qpn;
 526                 INIT_LIST_HEAD(&rule.list);
 527
 528                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 529                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 530                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 531                 list_add_tail(&spec_eth.list, &rule.list);
 532
 533                 err = mlx4_flow_attach(dev, &rule, reg_id);
 534                 break;
 535         }
 536         default:
 537                 return -EINVAL;
 538         }
 539         if (err)
 540                 en_warn(priv, "Failed Attaching Unicast\n");
 541
 542         return err;
 543 }
 544
 545 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 546                                      unsigned char *mac, int qpn, u64 reg_id)
 547 {
 548         struct mlx4_en_dev *mdev = priv->mdev;
 549         struct mlx4_dev *dev = mdev->dev;
 550
 551         switch (dev->caps.steering_mode) {
 552         case MLX4_STEERING_MODE_B0: {
 553                 struct mlx4_qp qp;
 554                 u8 gid[16] = {0};
 555
 556                 qp.qpn = qpn;
 557                 memcpy(&gid[10], mac, ETH_ALEN);
 558                 gid[5] = priv->port;
 559
 560                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 561                 break;
 562         }
 563         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 564                 mlx4_flow_detach(dev, reg_id);
 565                 break;
 566         }
 567         default:
 568                 en_err(priv, "Invalid steering mode.\n");
 569         }
 570 }
 571
 572 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 573 {
 574         struct mlx4_en_dev *mdev = priv->mdev;
 575         struct mlx4_dev *dev = mdev->dev;
 576         struct mlx4_mac_entry *entry;
 577         int index = 0;
 578         int err = 0;
 579         u64 reg_id = 0;
 580         int *qpn = &priv->base_qpn;
 581         u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 582
 583         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 584                priv->dev->dev_addr);
 585         index = mlx4_register_mac(dev, priv->port, mac);
 586         if (index < 0) {
 587                 err = index;
 588                 en_err(priv, "Failed adding MAC: %pM\n",
 589                        priv->dev->dev_addr);
 590                 return err;
 591         }
 592
 593         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 594                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 595                 *qpn = base_qpn + index;
 596                 return 0;
 597         }
 598
 599         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
 600         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 601         if (err) {
 602                 en_err(priv, "Failed to reserve qp for mac registration\n");
 603                 goto qp_err;
 604         }
 605
 606         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
 607         if (err)
 608                 goto steer_err;
 609
 610         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
 611                                        &priv->tunnel_reg_id);
 612         if (err)
 613                 goto tunnel_err;
 614
 615         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
 616         if (!entry) {
 617                 err = -ENOMEM;
 618                 goto alloc_err;
 619         }
 620         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
 621         memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
 622         entry->reg_id = reg_id;
 623
 624         hlist_add_head_rcu(&entry->hlist,
 625                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
 626
 627         return 0;
 628
 629 alloc_err:
 630         if (priv->tunnel_reg_id)
 631                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 632 tunnel_err:
 633         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
 634
 635 steer_err:
 636         mlx4_qp_release_range(dev, *qpn, 1);
 637
 638 qp_err:
 639         mlx4_unregister_mac(dev, priv->port, mac);
 640         return err;
 641 }
 642
 643 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 644 {
 645         struct mlx4_en_dev *mdev = priv->mdev;
 646         struct mlx4_dev *dev = mdev->dev;
 647         int qpn = priv->base_qpn;
 648         u64 mac;
 649
 650         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 651                 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 652                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 653                        priv->dev->dev_addr);
 654                 mlx4_unregister_mac(dev, priv->port, mac);
 655         } else {
 656                 struct mlx4_mac_entry *entry;
 657                 struct hlist_node *tmp;
 658                 struct hlist_head *bucket;
 659                 unsigned int i;
 660
 661                 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
 662                         bucket = &priv->mac_hash[i];
 663                         hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 664                                 mac = mlx4_mac_to_u64(entry->mac);
 665                                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 666                                        entry->mac);
 667                                 mlx4_en_uc_steer_release(priv, entry->mac,
 668                                                          qpn, entry->reg_id);
 669
 670                                 mlx4_unregister_mac(dev, priv->port, mac);
 671                                 hlist_del_rcu(&entry->hlist);
 672                                 kfree_rcu(entry, rcu);
 673                         }
 674                 }
 675
 676                 if (priv->tunnel_reg_id) {
 677                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 678                         priv->tunnel_reg_id = 0;
 679                 }
 680
 681                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 682                        priv->port, qpn);
 683                 mlx4_qp_release_range(dev, qpn, 1);
 684                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 685         }
 686 }
 687
 688 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 689                                unsigned char *new_mac, unsigned char *prev_mac)
 690 {
 691         struct mlx4_en_dev *mdev = priv->mdev;
 692         struct mlx4_dev *dev = mdev->dev;
 693         int err = 0;
 694         u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 695
 696         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 697                 struct hlist_head *bucket;
 698                 unsigned int mac_hash;
 699                 struct mlx4_mac_entry *entry;
 700                 struct hlist_node *tmp;
 701                 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 702
 703                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 704                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 705                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 706                                 mlx4_en_uc_steer_release(priv, entry->mac,
 707                                                          qpn, entry->reg_id);
 708                                 mlx4_unregister_mac(dev, priv->port,
 709                                                     prev_mac_u64);
 710                                 hlist_del_rcu(&entry->hlist);
 711                                 synchronize_rcu();
 712                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 713                                 entry->reg_id = 0;
 714                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 715                                 hlist_add_head_rcu(&entry->hlist,
 716                                                    &priv->mac_hash[mac_hash]);
 717                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 718                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 719                                                            &qpn,
 720                                                            &entry->reg_id);
 721                                 if (err)
 722                                         return err;
 723                                 if (priv->tunnel_reg_id) {
 724                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 725                                         priv->tunnel_reg_id = 0;
 726                                 }
 727                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 728                                                                &priv->tunnel_reg_id);
 729                                 return err;
 730                         }
 731                 }
 732                 return -EINVAL;
 733         }
 734
 735         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 736 }
 737
 738 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 739                               unsigned char new_mac[ETH_ALEN + 2])
 740 {
 741         int err = 0;
 742
 743         if (priv->port_up) {
 744                 /* Remove old MAC and insert the new one */
 745                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 746                                           new_mac, priv->current_mac);
 747                 if (err)
 748                         en_err(priv, "Failed changing HW MAC address\n");
 749         } else
 750                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 751
 752         if (!err)
 753                 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 754
 755         return err;
 756 }
 757
 758 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 759 {
 760         struct mlx4_en_priv *priv = netdev_priv(dev);
 761         struct mlx4_en_dev *mdev = priv->mdev;
 762         struct sockaddr *saddr = addr;
 763         unsigned char new_mac[ETH_ALEN + 2];
 764         int err;
 765
 766         if (!is_valid_ether_addr(saddr->sa_data))
 767                 return -EADDRNOTAVAIL;
 768
 769         mutex_lock(&mdev->state_lock);
 770         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 771         err = mlx4_en_do_set_mac(priv, new_mac);
 772         if (!err)
 773                 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 774         mutex_unlock(&mdev->state_lock);
 775
 776         return err;
 777 }
 778
 779 static void mlx4_en_clear_list(struct net_device *dev)
 780 {
 781         struct mlx4_en_priv *priv = netdev_priv(dev);
 782         struct mlx4_en_mc_list *tmp, *mc_to_del;
 783
 784         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 785                 list_del(&mc_to_del->list);
 786                 kfree(mc_to_del);
 787         }
 788 }
 789
 790 static void mlx4_en_cache_mclist(struct net_device *dev)
 791 {
 792         struct mlx4_en_priv *priv = netdev_priv(dev);
 793         struct netdev_hw_addr *ha;
 794         struct mlx4_en_mc_list *tmp;
 795
 796         mlx4_en_clear_list(dev);
 797         netdev_for_each_mc_addr(ha, dev) {
 798                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 799                 if (!tmp) {
 800                         mlx4_en_clear_list(dev);
 801                         return;
 802                 }
 803                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 804                 list_add_tail(&tmp->list, &priv->mc_list);
 805         }
 806 }
 807
 808 static void update_mclist_flags(struct mlx4_en_priv *priv,
 809                                 struct list_head *dst,
 810                                 struct list_head *src)
 811 {
 812         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 813         bool found;
 814
 815         /* Find all the entries that should be removed from dst,
 816          * These are the entries that are not found in src
 817          */
 818         list_for_each_entry(dst_tmp, dst, list) {
 819                 found = false;
 820                 list_for_each_entry(src_tmp, src, list) {
 821                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 822                                 found = true;
 823                                 break;
 824                         }
 825                 }
 826                 if (!found)
 827                         dst_tmp->action = MCLIST_REM;
 828         }
 829
 830         /* Add entries that exist in src but not in dst
 831          * mark them as need to add
 832          */
 833         list_for_each_entry(src_tmp, src, list) {
 834                 found = false;
 835                 list_for_each_entry(dst_tmp, dst, list) {
 836                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 837                                 dst_tmp->action = MCLIST_NONE;
 838                                 found = true;
 839                                 break;
 840                         }
 841                 }
 842                 if (!found) {
 843                         new_mc = kmemdup(src_tmp,
 844                                          sizeof(struct mlx4_en_mc_list),
 845                                          GFP_KERNEL);
 846                         if (!new_mc)
 847                                 return;
 848
 849                         new_mc->action = MCLIST_ADD;
 850                         list_add_tail(&new_mc->list, dst);
 851                 }
 852         }
 853 }
 854
 855 static void mlx4_en_set_rx_mode(struct net_device *dev)
 856 {
 857         struct mlx4_en_priv *priv = netdev_priv(dev);
 858
 859         if (!priv->port_up)
 860                 return;
 861
 862         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 863 }
 864
 865 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 866                                      struct mlx4_en_dev *mdev)
 867 {
 868         int err = 0;
 869
 870         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 871                 if (netif_msg_rx_status(priv))
 872                         en_warn(priv, "Entering promiscuous mode\n");
 873                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 874
 875                 /* Enable promiscouos mode */
 876                 switch (mdev->dev->caps.steering_mode) {
 877                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 878                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 879                                                           priv->port,
 880                                                           priv->base_qpn,
 881                                                           MLX4_FS_ALL_DEFAULT);
 882                         if (err)
 883                                 en_err(priv, "Failed enabling promiscuous mode\n");
 884                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 885                         break;
 886
 887                 case MLX4_STEERING_MODE_B0:
 888                         err = mlx4_unicast_promisc_add(mdev->dev,
 889                                                        priv->base_qpn,
 890                                                        priv->port);
 891                         if (err)
 892                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 893
 894                         /* Add the default qp number as multicast
 895                          * promisc
 896                          */
 897                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 898                                 err = mlx4_multicast_promisc_add(mdev->dev,
 899                                                                  priv->base_qpn,
 900                                                                  priv->port);
 901                                 if (err)
 902                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 903                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 904                         }
 905                         break;
 906
 907                 case MLX4_STEERING_MODE_A0:
 908                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 909                                                      priv->port,
 910                                                      priv->base_qpn,
 911                                                      1);
 912                         if (err)
 913                                 en_err(priv, "Failed enabling promiscuous mode\n");
 914                         break;
 915                 }
 916
 917                 /* Disable port multicast filter (unconditionally) */
 918                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 919                                           0, MLX4_MCAST_DISABLE);
 920                 if (err)
 921                         en_err(priv, "Failed disabling multicast filter\n");
 922         }
 923 }
 924
 925 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 926                                        struct mlx4_en_dev *mdev)
 927 {
 928         int err = 0;
 929
 930         if (netif_msg_rx_status(priv))
 931                 en_warn(priv, "Leaving promiscuous mode\n");
 932         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 933
 934         /* Disable promiscouos mode */
 935         switch (mdev->dev->caps.steering_mode) {
 936         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 937                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 938                                                      priv->port,
 939                                                      MLX4_FS_ALL_DEFAULT);
 940                 if (err)
 941                         en_err(priv, "Failed disabling promiscuous mode\n");
 942                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 943                 break;
 944
 945         case MLX4_STEERING_MODE_B0:
 946                 err = mlx4_unicast_promisc_remove(mdev->dev,
 947                                                   priv->base_qpn,
 948                                                   priv->port);
 949                 if (err)
 950                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 951                 /* Disable Multicast promisc */
 952                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 953                         err = mlx4_multicast_promisc_remove(mdev->dev,
 954                                                             priv->base_qpn,
 955                                                             priv->port);
 956                         if (err)
 957                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 958                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 959                 }
 960                 break;
 961
 962         case MLX4_STEERING_MODE_A0:
 963                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 964                                              priv->port,
 965                                              priv->base_qpn, 0);
 966                 if (err)
 967                         en_err(priv, "Failed disabling promiscuous mode\n");
 968                 break;
 969         }
 970 }
 971
 972 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 973                                  struct net_device *dev,
 974                                  struct mlx4_en_dev *mdev)
 975 {
 976         struct mlx4_en_mc_list *mclist, *tmp;
 977         u64 mcast_addr = 0;
 978         u8 mc_list[16] = {0};
 979         int err = 0;
 980
 981         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 982         if (dev->flags & IFF_ALLMULTI) {
 983                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 984                                           0, MLX4_MCAST_DISABLE);
 985                 if (err)
 986                         en_err(priv, "Failed disabling multicast filter\n");
 987
 988                 /* Add the default qp number as multicast promisc */
 989                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 990                         switch (mdev->dev->caps.steering_mode) {
 991                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 992                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 993                                                                   priv->port,
 994                                                                   priv->base_qpn,
 995                                                                   MLX4_FS_MC_DEFAULT);
 996                                 break;
 997
 998                         case MLX4_STEERING_MODE_B0:
 999                                 err = mlx4_multicast_promisc_add(mdev->dev,
1000                                                                  priv->base_qpn,
1001                                                                  priv->port);
1002                                 break;
1003
1004                         case MLX4_STEERING_MODE_A0:
1005                                 break;
1006                         }
1007                         if (err)
1008                                 en_err(priv, "Failed entering multicast promisc mode\n");
1009                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1010                 }
1011         } else {
1012                 /* Disable Multicast promisc */
1013                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1014                         switch (mdev->dev->caps.steering_mode) {
1015                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1016                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
1017                                                                      priv->port,
1018                                                                      MLX4_FS_MC_DEFAULT);
1019                                 break;
1020
1021                         case MLX4_STEERING_MODE_B0:
1022                                 err = mlx4_multicast_promisc_remove(mdev->dev,
1023                                                                     priv->base_qpn,
1024                                                                     priv->port);
1025                                 break;
1026
1027                         case MLX4_STEERING_MODE_A0:
1028                                 break;
1029                         }
1030                         if (err)
1031                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1032                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1033                 }
1034
1035                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1036                                           0, MLX4_MCAST_DISABLE);
1037                 if (err)
1038                         en_err(priv, "Failed disabling multicast filter\n");
1039
1040                 /* Flush mcast filter and init it with broadcast address */
1041                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1042                                     1, MLX4_MCAST_CONFIG);
1043
1044                 /* Update multicast list - we cache all addresses so they won't
1045                  * change while HW is updated holding the command semaphor */
1046                 netif_addr_lock_bh(dev);
1047                 mlx4_en_cache_mclist(dev);
1048                 netif_addr_unlock_bh(dev);
1049                 list_for_each_entry(mclist, &priv->mc_list, list) {
1050                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
1051                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1052                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
1053                 }
1054                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1055                                           0, MLX4_MCAST_ENABLE);
1056                 if (err)
1057                         en_err(priv, "Failed enabling multicast filter\n");
1058
1059                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1060                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1061                         if (mclist->action == MCLIST_REM) {
1062                                 /* detach this address and delete from list */
1063                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1064                                 mc_list[5] = priv->port;
1065                                 err = mlx4_multicast_detach(mdev->dev,
1066                                                             &priv->rss_map.indir_qp,
1067                                                             mc_list,
1068                                                             MLX4_PROT_ETH,
1069                                                             mclist->reg_id);
1070                                 if (err)
1071                                         en_err(priv, "Fail to detach multicast address\n");
1072
1073                                 if (mclist->tunnel_reg_id) {
1074                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1075                                         if (err)
1076                                                 en_err(priv, "Failed to detach multicast address\n");
1077                                 }
1078
1079                                 /* remove from list */
1080                                 list_del(&mclist->list);
1081                                 kfree(mclist);
1082                         } else if (mclist->action == MCLIST_ADD) {
1083                                 /* attach the address */
1084                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1085                                 /* needed for B0 steering support */
1086                                 mc_list[5] = priv->port;
1087                                 err = mlx4_multicast_attach(mdev->dev,
1088                                                             &priv->rss_map.indir_qp,
1089                                                             mc_list,
1090                                                             priv->port, 0,
1091                                                             MLX4_PROT_ETH,
1092                                                             &mclist->reg_id);
1093                                 if (err)
1094                                         en_err(priv, "Fail to attach multicast address\n");
1095
1096                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1097                                                                &mclist->tunnel_reg_id);
1098                                 if (err)
1099                                         en_err(priv, "Failed to attach multicast address\n");
1100                         }
1101                 }
1102         }
1103 }
1104
1105 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1106                                  struct net_device *dev,
1107                                  struct mlx4_en_dev *mdev)
1108 {
1109         struct netdev_hw_addr *ha;
1110         struct mlx4_mac_entry *entry;
1111         struct hlist_node *tmp;
1112         bool found;
1113         u64 mac;
1114         int err = 0;
1115         struct hlist_head *bucket;
1116         unsigned int i;
1117         int removed = 0;
1118         u32 prev_flags;
1119
1120         /* Note that we do not need to protect our mac_hash traversal with rcu,
1121          * since all modification code is protected by mdev->state_lock
1122          */
1123
1124         /* find what to remove */
1125         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1126                 bucket = &priv->mac_hash[i];
1127                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1128                         found = false;
1129                         netdev_for_each_uc_addr(ha, dev) {
1130                                 if (ether_addr_equal_64bits(entry->mac,
1131                                                             ha->addr)) {
1132                                         found = true;
1133                                         break;
1134                                 }
1135                         }
1136
1137                         /* MAC address of the port is not in uc list */
1138                         if (ether_addr_equal_64bits(entry->mac,
1139                                                     priv->current_mac))
1140                                 found = true;
1141
1142                         if (!found) {
1143                                 mac = mlx4_mac_to_u64(entry->mac);
1144                                 mlx4_en_uc_steer_release(priv, entry->mac,
1145                                                          priv->base_qpn,
1146                                                          entry->reg_id);
1147                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1148
1149                                 hlist_del_rcu(&entry->hlist);
1150                                 kfree_rcu(entry, rcu);
1151                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1152                                        entry->mac, priv->port);
1153                                 ++removed;
1154                         }
1155                 }
1156         }
1157
1158         /* if we didn't remove anything, there is no use in trying to add
1159          * again once we are in a forced promisc mode state
1160          */
1161         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1162                 return;
1163
1164         prev_flags = priv->flags;
1165         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1166
1167         /* find what to add */
1168         netdev_for_each_uc_addr(ha, dev) {
1169                 found = false;
1170                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1171                 hlist_for_each_entry(entry, bucket, hlist) {
1172                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1173                                 found = true;
1174                                 break;
1175                         }
1176                 }
1177
1178                 if (!found) {
1179                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1180                         if (!entry) {
1181                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1182                                        ha->addr, priv->port);
1183                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1184                                 break;
1185                         }
1186                         mac = mlx4_mac_to_u64(ha->addr);
1187                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1188                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1189                         if (err < 0) {
1190                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1191                                        ha->addr, priv->port, err);
1192                                 kfree(entry);
1193                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1194                                 break;
1195                         }
1196                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1197                                                    &priv->base_qpn,
1198                                                    &entry->reg_id);
1199                         if (err) {
1200                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1201                                        ha->addr, priv->port, err);
1202                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1203                                 kfree(entry);
1204                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1205                                 break;
1206                         } else {
1207                                 unsigned int mac_hash;
1208                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1209                                        ha->addr, priv->port);
1210                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1211                                 bucket = &priv->mac_hash[mac_hash];
1212                                 hlist_add_head_rcu(&entry->hlist, bucket);
1213                         }
1214                 }
1215         }
1216
1217         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1218                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1219                         priv->port);
1220         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1221                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1222                         priv->port);
1223         }
1224 }
1225
1226 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1227 {
1228         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1229                                                  rx_mode_task);
1230         struct mlx4_en_dev *mdev = priv->mdev;
1231         struct net_device *dev = priv->dev;
1232
1233         mutex_lock(&mdev->state_lock);
1234         if (!mdev->device_up) {
1235                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1236                 goto out;
1237         }
1238         if (!priv->port_up) {
1239                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1240                 goto out;
1241         }
1242
1243         if (!netif_carrier_ok(dev)) {
1244                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1245                         if (priv->port_state.link_state) {
1246                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1247                                 netif_carrier_on(dev);
1248                                 en_dbg(LINK, priv, "Link Up\n");
1249                         }
1250                 }
1251         }
1252
1253         if (dev->priv_flags & IFF_UNICAST_FLT)
1254                 mlx4_en_do_uc_filter(priv, dev, mdev);
1255
1256         /* Promsicuous mode: disable all filters */
1257         if ((dev->flags & IFF_PROMISC) ||
1258             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1259                 mlx4_en_set_promisc_mode(priv, mdev);
1260                 goto out;
1261         }
1262
1263         /* Not in promiscuous mode */
1264         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1265                 mlx4_en_clear_promisc_mode(priv, mdev);
1266
1267         mlx4_en_do_multicast(priv, dev, mdev);
1268 out:
1269         mutex_unlock(&mdev->state_lock);
1270 }
1271
1272 #ifdef CONFIG_NET_POLL_CONTROLLER
1273 static void mlx4_en_netpoll(struct net_device *dev)
1274 {
1275         struct mlx4_en_priv *priv = netdev_priv(dev);
1276         struct mlx4_en_cq *cq;
1277         int i;
1278
1279         for (i = 0; i < priv->rx_ring_num; i++) {
1280                 cq = priv->rx_cq[i];
1281                 napi_schedule(&cq->napi);
1282         }
1283 }
1284 #endif
1285
1286 static void mlx4_en_tx_timeout(struct net_device *dev)
1287 {
1288         struct mlx4_en_priv *priv = netdev_priv(dev);
1289         struct mlx4_en_dev *mdev = priv->mdev;
1290         int i;
1291
1292         if (netif_msg_timer(priv))
1293                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1294
1295         for (i = 0; i < priv->tx_ring_num; i++) {
1296                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1297                         continue;
1298                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1299                         i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1300                         priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1301         }
1302
1303         priv->port_stats.tx_timeout++;
1304         en_dbg(DRV, priv, "Scheduling watchdog\n");
1305         queue_work(mdev->workqueue, &priv->watchdog_task);
1306 }
1307
1308
1309 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1310 {
1311         struct mlx4_en_priv *priv = netdev_priv(dev);
1312
1313         spin_lock_bh(&priv->stats_lock);
1314         memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1315         spin_unlock_bh(&priv->stats_lock);
1316
1317         return &priv->ret_stats;
1318 }
1319
1320 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1321 {
1322         struct mlx4_en_cq *cq;
1323         int i;
1324
1325         /* If we haven't received a specific coalescing setting
1326          * (module param), we set the moderation parameters as follows:
1327          * - moder_cnt is set to the number of mtu sized packets to
1328          *   satisfy our coalescing target.
1329          * - moder_time is set to a fixed value.
1330          */
1331         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1332         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1333         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1334         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1335         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1336                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1337
1338         /* Setup cq moderation params */
1339         for (i = 0; i < priv->rx_ring_num; i++) {
1340                 cq = priv->rx_cq[i];
1341                 cq->moder_cnt = priv->rx_frames;
1342                 cq->moder_time = priv->rx_usecs;
1343                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1344                 priv->last_moder_packets[i] = 0;
1345                 priv->last_moder_bytes[i] = 0;
1346         }
1347
1348         for (i = 0; i < priv->tx_ring_num; i++) {
1349                 cq = priv->tx_cq[i];
1350                 cq->moder_cnt = priv->tx_frames;
1351                 cq->moder_time = priv->tx_usecs;
1352         }
1353
1354         /* Reset auto-moderation params */
1355         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1356         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1357         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1358         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1359         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1360         priv->adaptive_rx_coal = 1;
1361         priv->last_moder_jiffies = 0;
1362         priv->last_moder_tx_packets = 0;
1363 }
1364
1365 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1366 {
1367         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1368         struct mlx4_en_cq *cq;
1369         unsigned long packets;
1370         unsigned long rate;
1371         unsigned long avg_pkt_size;
1372         unsigned long rx_packets;
1373         unsigned long rx_bytes;
1374         unsigned long rx_pkt_diff;
1375         int moder_time;
1376         int ring, err;
1377
1378         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1379                 return;
1380
1381         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1382                 spin_lock_bh(&priv->stats_lock);
1383                 rx_packets = priv->rx_ring[ring]->packets;
1384                 rx_bytes = priv->rx_ring[ring]->bytes;
1385                 spin_unlock_bh(&priv->stats_lock);
1386
1387                 rx_pkt_diff = ((unsigned long) (rx_packets -
1388                                 priv->last_moder_packets[ring]));
1389                 packets = rx_pkt_diff;
1390                 rate = packets * HZ / period;
1391                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1392                                 priv->last_moder_bytes[ring])) / packets : 0;
1393
1394                 /* Apply auto-moderation only when packet rate
1395                  * exceeds a rate that it matters */
1396                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1397                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1398                         if (rate < priv->pkt_rate_low)
1399                                 moder_time = priv->rx_usecs_low;
1400                         else if (rate > priv->pkt_rate_high)
1401                                 moder_time = priv->rx_usecs_high;
1402                         else
1403                                 moder_time = (rate - priv->pkt_rate_low) *
1404                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1405                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1406                                         priv->rx_usecs_low;
1407                 } else {
1408                         moder_time = priv->rx_usecs_low;
1409                 }
1410
1411                 if (moder_time != priv->last_moder_time[ring]) {
1412                         priv->last_moder_time[ring] = moder_time;
1413                         cq = priv->rx_cq[ring];
1414                         cq->moder_time = moder_time;
1415                         cq->moder_cnt = priv->rx_frames;
1416                         err = mlx4_en_set_cq_moder(priv, cq);
1417                         if (err)
1418                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1419                                        ring);
1420                 }
1421                 priv->last_moder_packets[ring] = rx_packets;
1422                 priv->last_moder_bytes[ring] = rx_bytes;
1423         }
1424
1425         priv->last_moder_jiffies = jiffies;
1426 }
1427
1428 static void mlx4_en_do_get_stats(struct work_struct *work)
1429 {
1430         struct delayed_work *delay = to_delayed_work(work);
1431         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1432                                                  stats_task);
1433         struct mlx4_en_dev *mdev = priv->mdev;
1434         int err;
1435
1436         mutex_lock(&mdev->state_lock);
1437         if (mdev->device_up) {
1438                 if (priv->port_up) {
1439                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1440                         if (err)
1441                                 en_dbg(HW, priv, "Could not update stats\n");
1442
1443                         mlx4_en_auto_moderation(priv);
1444                 }
1445
1446                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1447         }
1448         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1449                 mlx4_en_do_set_mac(priv, priv->current_mac);
1450                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1451         }
1452         mutex_unlock(&mdev->state_lock);
1453 }
1454
1455 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1456  * periodically
1457  */
1458 static void mlx4_en_service_task(struct work_struct *work)
1459 {
1460         struct delayed_work *delay = to_delayed_work(work);
1461         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1462                                                  service_task);
1463         struct mlx4_en_dev *mdev = priv->mdev;
1464
1465         mutex_lock(&mdev->state_lock);
1466         if (mdev->device_up) {
1467                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1468                         mlx4_en_ptp_overflow_check(mdev);
1469
1470                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1471                                    SERVICE_TASK_DELAY);
1472         }
1473         mutex_unlock(&mdev->state_lock);
1474 }
1475
1476 static void mlx4_en_linkstate(struct work_struct *work)
1477 {
1478         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1479                                                  linkstate_task);
1480         struct mlx4_en_dev *mdev = priv->mdev;
1481         int linkstate = priv->link_state;
1482
1483         mutex_lock(&mdev->state_lock);
1484         /* If observable port state changed set carrier state and
1485          * report to system log */
1486         if (priv->last_link_state != linkstate) {
1487                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1488                         en_info(priv, "Link Down\n");
1489                         netif_carrier_off(priv->dev);
1490                 } else {
1491                         en_info(priv, "Link Up\n");
1492                         netif_carrier_on(priv->dev);
1493                 }
1494         }
1495         priv->last_link_state = linkstate;
1496         mutex_unlock(&mdev->state_lock);
1497 }
1498
1499 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1500 {
1501         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1502         int numa_node = priv->mdev->dev->numa_node;
1503         int ret = 0;
1504
1505         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1506                 return -ENOMEM;
1507
1508         ret = cpumask_set_cpu_local_first(ring_idx, numa_node,
1509                                           ring->affinity_mask);
1510         if (ret)
1511                 free_cpumask_var(ring->affinity_mask);
1512
1513         return ret;
1514 }
1515
1516 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1517 {
1518         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1519 }
1520
1521 int mlx4_en_start_port(struct net_device *dev)
1522 {
1523         struct mlx4_en_priv *priv = netdev_priv(dev);
1524         struct mlx4_en_dev *mdev = priv->mdev;
1525         struct mlx4_en_cq *cq;
1526         struct mlx4_en_tx_ring *tx_ring;
1527         int rx_index = 0;
1528         int tx_index = 0;
1529         int err = 0;
1530         int i;
1531         int j;
1532         u8 mc_list[16] = {0};
1533
1534         if (priv->port_up) {
1535                 en_dbg(DRV, priv, "start port called while port already up\n");
1536                 return 0;
1537         }
1538
1539         INIT_LIST_HEAD(&priv->mc_list);
1540         INIT_LIST_HEAD(&priv->curr_list);
1541         INIT_LIST_HEAD(&priv->ethtool_list);
1542         memset(&priv->ethtool_rules[0], 0,
1543                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1544
1545         /* Calculate Rx buf size */
1546         dev->mtu = min(dev->mtu, priv->max_mtu);
1547         mlx4_en_calc_rx_buf(dev);
1548         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1549
1550         /* Configure rx cq's and rings */
1551         err = mlx4_en_activate_rx_rings(priv);
1552         if (err) {
1553                 en_err(priv, "Failed to activate RX rings\n");
1554                 return err;
1555         }
1556         for (i = 0; i < priv->rx_ring_num; i++) {
1557                 cq = priv->rx_cq[i];
1558
1559                 mlx4_en_cq_init_lock(cq);
1560
1561                 err = mlx4_en_init_affinity_hint(priv, i);
1562                 if (err) {
1563                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1564                         goto cq_err;
1565                 }
1566
1567                 err = mlx4_en_activate_cq(priv, cq, i);
1568                 if (err) {
1569                         en_err(priv, "Failed activating Rx CQ\n");
1570                         mlx4_en_free_affinity_hint(priv, i);
1571                         goto cq_err;
1572                 }
1573
1574                 for (j = 0; j < cq->size; j++) {
1575                         struct mlx4_cqe *cqe = NULL;
1576
1577                         cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1578                               priv->cqe_factor;
1579                         cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1580                 }
1581
1582                 err = mlx4_en_set_cq_moder(priv, cq);
1583                 if (err) {
1584                         en_err(priv, "Failed setting cq moderation parameters\n");
1585                         mlx4_en_deactivate_cq(priv, cq);
1586                         mlx4_en_free_affinity_hint(priv, i);
1587                         goto cq_err;
1588                 }
1589                 mlx4_en_arm_cq(priv, cq);
1590                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1591                 ++rx_index;
1592         }
1593
1594         /* Set qp number */
1595         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1596         err = mlx4_en_get_qp(priv);
1597         if (err) {
1598                 en_err(priv, "Failed getting eth qp\n");
1599                 goto cq_err;
1600         }
1601         mdev->mac_removed[priv->port] = 0;
1602
1603         err = mlx4_en_config_rss_steer(priv);
1604         if (err) {
1605                 en_err(priv, "Failed configuring rss steering\n");
1606                 goto mac_err;
1607         }
1608
1609         err = mlx4_en_create_drop_qp(priv);
1610         if (err)
1611                 goto rss_err;
1612
1613         /* Configure tx cq's and rings */
1614         for (i = 0; i < priv->tx_ring_num; i++) {
1615                 /* Configure cq */
1616                 cq = priv->tx_cq[i];
1617                 err = mlx4_en_activate_cq(priv, cq, i);
1618                 if (err) {
1619                         en_err(priv, "Failed allocating Tx CQ\n");
1620                         goto tx_err;
1621                 }
1622                 err = mlx4_en_set_cq_moder(priv, cq);
1623                 if (err) {
1624                         en_err(priv, "Failed setting cq moderation parameters\n");
1625                         mlx4_en_deactivate_cq(priv, cq);
1626                         goto tx_err;
1627                 }
1628                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1629                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1630
1631                 /* Configure ring */
1632                 tx_ring = priv->tx_ring[i];
1633                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1634                         i / priv->num_tx_rings_p_up);
1635                 if (err) {
1636                         en_err(priv, "Failed allocating Tx ring\n");
1637                         mlx4_en_deactivate_cq(priv, cq);
1638                         goto tx_err;
1639                 }
1640                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1641
1642                 /* Arm CQ for TX completions */
1643                 mlx4_en_arm_cq(priv, cq);
1644
1645                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1646                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1647                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1648                 ++tx_index;
1649         }
1650
1651         /* Configure port */
1652         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1653                                     priv->rx_skb_size + ETH_FCS_LEN,
1654                                     priv->prof->tx_pause,
1655                                     priv->prof->tx_ppp,
1656                                     priv->prof->rx_pause,
1657                                     priv->prof->rx_ppp);
1658         if (err) {
1659                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1660                        priv->port, err);
1661                 goto tx_err;
1662         }
1663         /* Set default qp number */
1664         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1665         if (err) {
1666                 en_err(priv, "Failed setting default qp numbers\n");
1667                 goto tx_err;
1668         }
1669
1670         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1671                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1672                 if (err) {
1673                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1674                                err);
1675                         goto tx_err;
1676                 }
1677         }
1678
1679         /* Init port */
1680         en_dbg(HW, priv, "Initializing port\n");
1681         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1682         if (err) {
1683                 en_err(priv, "Failed Initializing port\n");
1684                 goto tx_err;
1685         }
1686
1687         /* Attach rx QP to bradcast address */
1688         memset(&mc_list[10], 0xff, ETH_ALEN);
1689         mc_list[5] = priv->port; /* needed for B0 steering support */
1690         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1691                                   priv->port, 0, MLX4_PROT_ETH,
1692                                   &priv->broadcast_id))
1693                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1694
1695         /* Must redo promiscuous mode setup. */
1696         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1697
1698         /* Schedule multicast task to populate multicast list */
1699         queue_work(mdev->workqueue, &priv->rx_mode_task);
1700
1701         mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1702
1703 #ifdef CONFIG_MLX4_EN_VXLAN
1704         if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1705                 vxlan_get_rx_port(dev);
1706 #endif
1707         priv->port_up = true;
1708         netif_tx_start_all_queues(dev);
1709         netif_device_attach(dev);
1710
1711         return 0;
1712
1713 tx_err:
1714         while (tx_index--) {
1715                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1716                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1717         }
1718         mlx4_en_destroy_drop_qp(priv);
1719 rss_err:
1720         mlx4_en_release_rss_steer(priv);
1721 mac_err:
1722         mlx4_en_put_qp(priv);
1723 cq_err:
1724         while (rx_index--) {
1725                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1726                 mlx4_en_free_affinity_hint(priv, i);
1727         }
1728         for (i = 0; i < priv->rx_ring_num; i++)
1729                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1730
1731         return err; /* need to close devices */
1732 }
1733
1734
1735 void mlx4_en_stop_port(struct net_device *dev, int detach)
1736 {
1737         struct mlx4_en_priv *priv = netdev_priv(dev);
1738         struct mlx4_en_dev *mdev = priv->mdev;
1739         struct mlx4_en_mc_list *mclist, *tmp;
1740         struct ethtool_flow_id *flow, *tmp_flow;
1741         int i;
1742         u8 mc_list[16] = {0};
1743
1744         if (!priv->port_up) {
1745                 en_dbg(DRV, priv, "stop port called while port already down\n");
1746                 return;
1747         }
1748
1749         /* close port*/
1750         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1751
1752         /* Synchronize with tx routine */
1753         netif_tx_lock_bh(dev);
1754         if (detach)
1755                 netif_device_detach(dev);
1756         netif_tx_stop_all_queues(dev);
1757         netif_tx_unlock_bh(dev);
1758
1759         netif_tx_disable(dev);
1760
1761         /* Set port as not active */
1762         priv->port_up = false;
1763
1764         /* Promsicuous mode */
1765         if (mdev->dev->caps.steering_mode ==
1766             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1767                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1768                                  MLX4_EN_FLAG_MC_PROMISC);
1769                 mlx4_flow_steer_promisc_remove(mdev->dev,
1770                                                priv->port,
1771                                                MLX4_FS_ALL_DEFAULT);
1772                 mlx4_flow_steer_promisc_remove(mdev->dev,
1773                                                priv->port,
1774                                                MLX4_FS_MC_DEFAULT);
1775         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1776                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1777
1778                 /* Disable promiscouos mode */
1779                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1780                                             priv->port);
1781
1782                 /* Disable Multicast promisc */
1783                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1784                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1785                                                       priv->port);
1786                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1787                 }
1788         }
1789
1790         /* Detach All multicasts */
1791         memset(&mc_list[10], 0xff, ETH_ALEN);
1792         mc_list[5] = priv->port; /* needed for B0 steering support */
1793         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1794                               MLX4_PROT_ETH, priv->broadcast_id);
1795         list_for_each_entry(mclist, &priv->curr_list, list) {
1796                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1797                 mc_list[5] = priv->port;
1798                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1799                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1800                 if (mclist->tunnel_reg_id)
1801                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1802         }
1803         mlx4_en_clear_list(dev);
1804         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1805                 list_del(&mclist->list);
1806                 kfree(mclist);
1807         }
1808
1809         /* Flush multicast filter */
1810         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1811
1812         /* Remove flow steering rules for the port*/
1813         if (mdev->dev->caps.steering_mode ==
1814             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1815                 ASSERT_RTNL();
1816                 list_for_each_entry_safe(flow, tmp_flow,
1817                                          &priv->ethtool_list, list) {
1818                         mlx4_flow_detach(mdev->dev, flow->id);
1819                         list_del(&flow->list);
1820                 }
1821         }
1822
1823         mlx4_en_destroy_drop_qp(priv);
1824
1825         /* Free TX Rings */
1826         for (i = 0; i < priv->tx_ring_num; i++) {
1827                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1828                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1829         }
1830         msleep(10);
1831
1832         for (i = 0; i < priv->tx_ring_num; i++)
1833                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1834
1835         /* Free RSS qps */
1836         mlx4_en_release_rss_steer(priv);
1837
1838         /* Unregister Mac address for the port */
1839         mlx4_en_put_qp(priv);
1840         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1841                 mdev->mac_removed[priv->port] = 1;
1842
1843         /* Free RX Rings */
1844         for (i = 0; i < priv->rx_ring_num; i++) {
1845                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1846
1847                 local_bh_disable();
1848                 while (!mlx4_en_cq_lock_napi(cq)) {
1849                         pr_info("CQ %d locked\n", i);
1850                         mdelay(1);
1851                 }
1852                 local_bh_enable();
1853
1854                 napi_synchronize(&cq->napi);
1855                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1856                 mlx4_en_deactivate_cq(priv, cq);
1857
1858                 mlx4_en_free_affinity_hint(priv, i);
1859         }
1860 }
1861
1862 static void mlx4_en_restart(struct work_struct *work)
1863 {
1864         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1865                                                  watchdog_task);
1866         struct mlx4_en_dev *mdev = priv->mdev;
1867         struct net_device *dev = priv->dev;
1868
1869         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1870
1871         mutex_lock(&mdev->state_lock);
1872         if (priv->port_up) {
1873                 mlx4_en_stop_port(dev, 1);
1874                 if (mlx4_en_start_port(dev))
1875                         en_err(priv, "Failed restarting port %d\n", priv->port);
1876         }
1877         mutex_unlock(&mdev->state_lock);
1878 }
1879
1880 static void mlx4_en_clear_stats(struct net_device *dev)
1881 {
1882         struct mlx4_en_priv *priv = netdev_priv(dev);
1883         struct mlx4_en_dev *mdev = priv->mdev;
1884         int i;
1885
1886         if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1887                 en_dbg(HW, priv, "Failed dumping statistics\n");
1888
1889         memset(&priv->stats, 0, sizeof(priv->stats));
1890         memset(&priv->pstats, 0, sizeof(priv->pstats));
1891         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1892         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1893
1894         for (i = 0; i < priv->tx_ring_num; i++) {
1895                 priv->tx_ring[i]->bytes = 0;
1896                 priv->tx_ring[i]->packets = 0;
1897                 priv->tx_ring[i]->tx_csum = 0;
1898         }
1899         for (i = 0; i < priv->rx_ring_num; i++) {
1900                 priv->rx_ring[i]->bytes = 0;
1901                 priv->rx_ring[i]->packets = 0;
1902                 priv->rx_ring[i]->csum_ok = 0;
1903                 priv->rx_ring[i]->csum_none = 0;
1904                 priv->rx_ring[i]->csum_complete = 0;
1905         }
1906 }
1907
1908 static int mlx4_en_open(struct net_device *dev)
1909 {
1910         struct mlx4_en_priv *priv = netdev_priv(dev);
1911         struct mlx4_en_dev *mdev = priv->mdev;
1912         int err = 0;
1913
1914         mutex_lock(&mdev->state_lock);
1915
1916         if (!mdev->device_up) {
1917                 en_err(priv, "Cannot open - device down/disabled\n");
1918                 err = -EBUSY;
1919                 goto out;
1920         }
1921
1922         /* Reset HW statistics and SW counters */
1923         mlx4_en_clear_stats(dev);
1924
1925         err = mlx4_en_start_port(dev);
1926         if (err)
1927                 en_err(priv, "Failed starting port:%d\n", priv->port);
1928
1929 out:
1930         mutex_unlock(&mdev->state_lock);
1931         return err;
1932 }
1933
1934
1935 static int mlx4_en_close(struct net_device *dev)
1936 {
1937         struct mlx4_en_priv *priv = netdev_priv(dev);
1938         struct mlx4_en_dev *mdev = priv->mdev;
1939
1940         en_dbg(IFDOWN, priv, "Close port called\n");
1941
1942         mutex_lock(&mdev->state_lock);
1943
1944         mlx4_en_stop_port(dev, 0);
1945         netif_carrier_off(dev);
1946
1947         mutex_unlock(&mdev->state_lock);
1948         return 0;
1949 }
1950
1951 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1952 {
1953         int i;
1954
1955 #ifdef CONFIG_RFS_ACCEL
1956         free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1957         priv->dev->rx_cpu_rmap = NULL;
1958 #endif
1959
1960         for (i = 0; i < priv->tx_ring_num; i++) {
1961                 if (priv->tx_ring && priv->tx_ring[i])
1962                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1963                 if (priv->tx_cq && priv->tx_cq[i])
1964                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1965         }
1966
1967         for (i = 0; i < priv->rx_ring_num; i++) {
1968                 if (priv->rx_ring[i])
1969                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1970                                 priv->prof->rx_ring_size, priv->stride);
1971                 if (priv->rx_cq[i])
1972                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1973         }
1974
1975         if (priv->base_tx_qpn) {
1976                 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1977                 priv->base_tx_qpn = 0;
1978         }
1979 }
1980
1981 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1982 {
1983         struct mlx4_en_port_profile *prof = priv->prof;
1984         int i;
1985         int node;
1986
1987         /* Create tx Rings */
1988         for (i = 0; i < priv->tx_ring_num; i++) {
1989                 node = cpu_to_node(i % num_online_cpus());
1990                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1991                                       prof->tx_ring_size, i, TX, node))
1992                         goto err;
1993
1994                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1995                                            prof->tx_ring_size, TXBB_SIZE,
1996                                            node, i))
1997                         goto err;
1998         }
1999
2000         /* Create rx Rings */
2001         for (i = 0; i < priv->rx_ring_num; i++) {
2002                 node = cpu_to_node(i % num_online_cpus());
2003                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2004                                       prof->rx_ring_size, i, RX, node))
2005                         goto err;
2006
2007                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2008                                            prof->rx_ring_size, priv->stride,
2009                                            node))
2010                         goto err;
2011         }
2012
2013 #ifdef CONFIG_RFS_ACCEL
2014         if (priv->mdev->dev->caps.comp_pool) {
2015                 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
2016                 if (!priv->dev->rx_cpu_rmap)
2017                         goto err;
2018         }
2019 #endif
2020
2021         return 0;
2022
2023 err:
2024         en_err(priv, "Failed to allocate NIC resources\n");
2025         for (i = 0; i < priv->rx_ring_num; i++) {
2026                 if (priv->rx_ring[i])
2027                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2028                                                 prof->rx_ring_size,
2029                                                 priv->stride);
2030                 if (priv->rx_cq[i])
2031                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2032         }
2033         for (i = 0; i < priv->tx_ring_num; i++) {
2034                 if (priv->tx_ring[i])
2035                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2036                 if (priv->tx_cq[i])
2037                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2038         }
2039         return -ENOMEM;
2040 }
2041
2042
2043 void mlx4_en_destroy_netdev(struct net_device *dev)
2044 {
2045         struct mlx4_en_priv *priv = netdev_priv(dev);
2046         struct mlx4_en_dev *mdev = priv->mdev;
2047
2048         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2049
2050         /* Unregister device - this will close the port if it was up */
2051         if (priv->registered)
2052                 unregister_netdev(dev);
2053
2054         if (priv->allocated)
2055                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2056
2057         cancel_delayed_work(&priv->stats_task);
2058         cancel_delayed_work(&priv->service_task);
2059         /* flush any pending task for this netdev */
2060         flush_workqueue(mdev->workqueue);
2061
2062         /* Detach the netdev so tasks would not attempt to access it */
2063         mutex_lock(&mdev->state_lock);
2064         mdev->pndev[priv->port] = NULL;
2065         mutex_unlock(&mdev->state_lock);
2066
2067         mlx4_en_free_resources(priv);
2068
2069         kfree(priv->tx_ring);
2070         kfree(priv->tx_cq);
2071
2072         free_netdev(dev);
2073 }
2074
2075 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2076 {
2077         struct mlx4_en_priv *priv = netdev_priv(dev);
2078         struct mlx4_en_dev *mdev = priv->mdev;
2079         int err = 0;
2080
2081         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2082                  dev->mtu, new_mtu);
2083
2084         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2085                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2086                 return -EPERM;
2087         }
2088         dev->mtu = new_mtu;
2089
2090         if (netif_running(dev)) {
2091                 mutex_lock(&mdev->state_lock);
2092                 if (!mdev->device_up) {
2093                         /* NIC is probably restarting - let watchdog task reset
2094                          * the port */
2095                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2096                 } else {
2097                         mlx4_en_stop_port(dev, 1);
2098                         err = mlx4_en_start_port(dev);
2099                         if (err) {
2100                                 en_err(priv, "Failed restarting port:%d\n",
2101                                          priv->port);
2102                                 queue_work(mdev->workqueue, &priv->watchdog_task);
2103                         }
2104                 }
2105                 mutex_unlock(&mdev->state_lock);
2106         }
2107         return 0;
2108 }
2109
2110 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2111 {
2112         struct mlx4_en_priv *priv = netdev_priv(dev);
2113         struct mlx4_en_dev *mdev = priv->mdev;
2114         struct hwtstamp_config config;
2115
2116         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2117                 return -EFAULT;
2118
2119         /* reserved for future extensions */
2120         if (config.flags)
2121                 return -EINVAL;
2122
2123         /* device doesn't support time stamping */
2124         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2125                 return -EINVAL;
2126
2127         /* TX HW timestamp */
2128         switch (config.tx_type) {
2129         case HWTSTAMP_TX_OFF:
2130         case HWTSTAMP_TX_ON:
2131                 break;
2132         default:
2133                 return -ERANGE;
2134         }
2135
2136         /* RX HW timestamp */
2137         switch (config.rx_filter) {
2138         case HWTSTAMP_FILTER_NONE:
2139                 break;
2140         case HWTSTAMP_FILTER_ALL:
2141         case HWTSTAMP_FILTER_SOME:
2142         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2143         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2144         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2145         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2146         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2147         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2148         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2149         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2150         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2151         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2152         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2153         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2154                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2155                 break;
2156         default:
2157                 return -ERANGE;
2158         }
2159
2160         if (mlx4_en_reset_config(dev, config, dev->features)) {
2161                 config.tx_type = HWTSTAMP_TX_OFF;
2162                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2163         }
2164
2165         return copy_to_user(ifr->ifr_data, &config,
2166                             sizeof(config)) ? -EFAULT : 0;
2167 }
2168
2169 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2170 {
2171         struct mlx4_en_priv *priv = netdev_priv(dev);
2172
2173         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2174                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2175 }
2176
2177 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2178 {
2179         switch (cmd) {
2180         case SIOCSHWTSTAMP:
2181                 return mlx4_en_hwtstamp_set(dev, ifr);
2182         case SIOCGHWTSTAMP:
2183                 return mlx4_en_hwtstamp_get(dev, ifr);
2184         default:
2185                 return -EOPNOTSUPP;
2186         }
2187 }
2188
2189 static int mlx4_en_set_features(struct net_device *netdev,
2190                 netdev_features_t features)
2191 {
2192         struct mlx4_en_priv *priv = netdev_priv(netdev);
2193         int ret = 0;
2194
2195         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2196                 en_info(priv, "Turn %s RX vlan strip offload\n",
2197                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2198                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2199                                            features);
2200                 if (ret)
2201                         return ret;
2202         }
2203
2204         if (features & NETIF_F_LOOPBACK)
2205                 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2206         else
2207                 priv->ctrl_flags &=
2208                         cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2209
2210         mlx4_en_update_loopback_state(netdev, features);
2211
2212         return 0;
2213
2214 }
2215
2216 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2217 {
2218         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2219         struct mlx4_en_dev *mdev = en_priv->mdev;
2220         u64 mac_u64 = mlx4_mac_to_u64(mac);
2221
2222         if (!is_valid_ether_addr(mac))
2223                 return -EINVAL;
2224
2225         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2226 }
2227
2228 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2229 {
2230         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2231         struct mlx4_en_dev *mdev = en_priv->mdev;
2232
2233         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2234 }
2235
2236 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2237 {
2238         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2239         struct mlx4_en_dev *mdev = en_priv->mdev;
2240
2241         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2242 }
2243
2244 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2245 {
2246         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2247         struct mlx4_en_dev *mdev = en_priv->mdev;
2248
2249         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2250 }
2251
2252 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2253 {
2254         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2255         struct mlx4_en_dev *mdev = en_priv->mdev;
2256
2257         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2258 }
2259
2260 #define PORT_ID_BYTE_LEN 8
2261 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2262                                     struct netdev_phys_item_id *ppid)
2263 {
2264         struct mlx4_en_priv *priv = netdev_priv(dev);
2265         struct mlx4_dev *mdev = priv->mdev->dev;
2266         int i;
2267         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2268
2269         if (!phys_port_id)
2270                 return -EOPNOTSUPP;
2271
2272         ppid->id_len = sizeof(phys_port_id);
2273         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2274                 ppid->id[i] =  phys_port_id & 0xff;
2275                 phys_port_id >>= 8;
2276         }
2277         return 0;
2278 }
2279
2280 #ifdef CONFIG_MLX4_EN_VXLAN
2281 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2282 {
2283         int ret;
2284         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2285                                                  vxlan_add_task);
2286
2287         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2288         if (ret)
2289                 goto out;
2290
2291         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2292                                   VXLAN_STEER_BY_OUTER_MAC, 1);
2293 out:
2294         if (ret) {
2295                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2296                 return;
2297         }
2298
2299         /* set offloads */
2300         priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2301                                       NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL;
2302         priv->dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
2303         priv->dev->features    |= NETIF_F_GSO_UDP_TUNNEL;
2304 }
2305
2306 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2307 {
2308         int ret;
2309         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2310                                                  vxlan_del_task);
2311         /* unset offloads */
2312         priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2313                                       NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL);
2314         priv->dev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL;
2315         priv->dev->features    &= ~NETIF_F_GSO_UDP_TUNNEL;
2316
2317         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2318                                   VXLAN_STEER_BY_OUTER_MAC, 0);
2319         if (ret)
2320                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2321
2322         priv->vxlan_port = 0;
2323 }
2324
2325 static void mlx4_en_add_vxlan_port(struct  net_device *dev,
2326                                    sa_family_t sa_family, __be16 port)
2327 {
2328         struct mlx4_en_priv *priv = netdev_priv(dev);
2329         __be16 current_port;
2330
2331         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2332                 return;
2333
2334         if (sa_family == AF_INET6)
2335                 return;
2336
2337         current_port = priv->vxlan_port;
2338         if (current_port && current_port != port) {
2339                 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2340                         ntohs(current_port), ntohs(port));
2341                 return;
2342         }
2343
2344         priv->vxlan_port = port;
2345         queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2346 }
2347
2348 static void mlx4_en_del_vxlan_port(struct  net_device *dev,
2349                                    sa_family_t sa_family, __be16 port)
2350 {
2351         struct mlx4_en_priv *priv = netdev_priv(dev);
2352         __be16 current_port;
2353
2354         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2355                 return;
2356
2357         if (sa_family == AF_INET6)
2358                 return;
2359
2360         current_port = priv->vxlan_port;
2361         if (current_port != port) {
2362                 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2363                 return;
2364         }
2365
2366         queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2367 }
2368
2369 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2370                                                 struct net_device *dev,
2371                                                 netdev_features_t features)
2372 {
2373         return vxlan_features_check(skb, features);
2374 }
2375 #endif
2376
2377 static const struct net_device_ops mlx4_netdev_ops = {
2378         .ndo_open               = mlx4_en_open,
2379         .ndo_stop               = mlx4_en_close,
2380         .ndo_start_xmit         = mlx4_en_xmit,
2381         .ndo_select_queue       = mlx4_en_select_queue,
2382         .ndo_get_stats          = mlx4_en_get_stats,
2383         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2384         .ndo_set_mac_address    = mlx4_en_set_mac,
2385         .ndo_validate_addr      = eth_validate_addr,
2386         .ndo_change_mtu         = mlx4_en_change_mtu,
2387         .ndo_do_ioctl           = mlx4_en_ioctl,
2388         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2389         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2390         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2391 #ifdef CONFIG_NET_POLL_CONTROLLER
2392         .ndo_poll_controller    = mlx4_en_netpoll,
2393 #endif
2394         .ndo_set_features       = mlx4_en_set_features,
2395         .ndo_setup_tc           = mlx4_en_setup_tc,
2396 #ifdef CONFIG_RFS_ACCEL
2397         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2398 #endif
2399 #ifdef CONFIG_NET_RX_BUSY_POLL
2400         .ndo_busy_poll          = mlx4_en_low_latency_recv,
2401 #endif
2402         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2403 #ifdef CONFIG_MLX4_EN_VXLAN
2404         .ndo_add_vxlan_port     = mlx4_en_add_vxlan_port,
2405         .ndo_del_vxlan_port     = mlx4_en_del_vxlan_port,
2406         .ndo_features_check     = mlx4_en_features_check,
2407 #endif
2408 };
2409
2410 static const struct net_device_ops mlx4_netdev_ops_master = {
2411         .ndo_open               = mlx4_en_open,
2412         .ndo_stop               = mlx4_en_close,
2413         .ndo_start_xmit         = mlx4_en_xmit,
2414         .ndo_select_queue       = mlx4_en_select_queue,
2415         .ndo_get_stats          = mlx4_en_get_stats,
2416         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2417         .ndo_set_mac_address    = mlx4_en_set_mac,
2418         .ndo_validate_addr      = eth_validate_addr,
2419         .ndo_change_mtu         = mlx4_en_change_mtu,
2420         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2421         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2422         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2423         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2424         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2425         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2426         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2427         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2428 #ifdef CONFIG_NET_POLL_CONTROLLER
2429         .ndo_poll_controller    = mlx4_en_netpoll,
2430 #endif
2431         .ndo_set_features       = mlx4_en_set_features,
2432         .ndo_setup_tc           = mlx4_en_setup_tc,
2433 #ifdef CONFIG_RFS_ACCEL
2434         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2435 #endif
2436         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2437 #ifdef CONFIG_MLX4_EN_VXLAN
2438         .ndo_add_vxlan_port     = mlx4_en_add_vxlan_port,
2439         .ndo_del_vxlan_port     = mlx4_en_del_vxlan_port,
2440         .ndo_features_check     = mlx4_en_features_check,
2441 #endif
2442 };
2443
2444 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2445                         struct mlx4_en_port_profile *prof)
2446 {
2447         struct net_device *dev;
2448         struct mlx4_en_priv *priv;
2449         int i;
2450         int err;
2451         u64 mac_u64;
2452
2453         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2454                                  MAX_TX_RINGS, MAX_RX_RINGS);
2455         if (dev == NULL)
2456                 return -ENOMEM;
2457
2458         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2459         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2460
2461         SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2462         dev->dev_port = port - 1;
2463
2464         /*
2465          * Initialize driver private data
2466          */
2467
2468         priv = netdev_priv(dev);
2469         memset(priv, 0, sizeof(struct mlx4_en_priv));
2470         spin_lock_init(&priv->stats_lock);
2471         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2472         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2473         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2474         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2475         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2476 #ifdef CONFIG_MLX4_EN_VXLAN
2477         INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
2478         INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
2479 #endif
2480 #ifdef CONFIG_RFS_ACCEL
2481         INIT_LIST_HEAD(&priv->filters);
2482         spin_lock_init(&priv->filters_lock);
2483 #endif
2484
2485         priv->dev = dev;
2486         priv->mdev = mdev;
2487         priv->ddev = &mdev->pdev->dev;
2488         priv->prof = prof;
2489         priv->port = port;
2490         priv->port_up = false;
2491         priv->flags = prof->flags;
2492         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
2493         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2494                         MLX4_WQE_CTRL_SOLICITED);
2495         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2496         priv->tx_ring_num = prof->tx_ring_num;
2497         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
2498         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
2499
2500         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2501                                 GFP_KERNEL);
2502         if (!priv->tx_ring) {
2503                 err = -ENOMEM;
2504                 goto out;
2505         }
2506         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2507                               GFP_KERNEL);
2508         if (!priv->tx_cq) {
2509                 err = -ENOMEM;
2510                 goto out;
2511         }
2512         priv->rx_ring_num = prof->rx_ring_num;
2513         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2514         priv->cqe_size = mdev->dev->caps.cqe_size;
2515         priv->mac_index = -1;
2516         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2517 #ifdef CONFIG_MLX4_EN_DCB
2518         if (!mlx4_is_slave(priv->mdev->dev)) {
2519                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2520                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2521                 } else {
2522                         en_info(priv, "enabling only PFC DCB ops\n");
2523                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2524                 }
2525         }
2526 #endif
2527
2528         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2529                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2530
2531         /* Query for default mac and max mtu */
2532         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2533
2534         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
2535             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
2536                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
2537
2538         /* Set default MAC */
2539         dev->addr_len = ETH_ALEN;
2540         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2541         if (!is_valid_ether_addr(dev->dev_addr)) {
2542                 if (mlx4_is_slave(priv->mdev->dev)) {
2543                         eth_hw_addr_random(dev);
2544                         en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2545                         mac_u64 = mlx4_mac_to_u64(dev->dev_addr);
2546                         mdev->dev->caps.def_mac[priv->port] = mac_u64;
2547                 } else {
2548                         en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2549                                priv->port, dev->dev_addr);
2550                         err = -EINVAL;
2551                         goto out;
2552                 }
2553         }
2554
2555         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
2556
2557         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2558                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2559         err = mlx4_en_alloc_resources(priv);
2560         if (err)
2561                 goto out;
2562
2563         /* Initialize time stamping config */
2564         priv->hwtstamp_config.flags = 0;
2565         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2566         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2567
2568         /* Allocate page for receive rings */
2569         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2570                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2571         if (err) {
2572                 en_err(priv, "Failed to allocate page for rx qps\n");
2573                 goto out;
2574         }
2575         priv->allocated = 1;
2576
2577         /*
2578          * Initialize netdev entry points
2579          */
2580         if (mlx4_is_master(priv->mdev->dev))
2581                 dev->netdev_ops = &mlx4_netdev_ops_master;
2582         else
2583                 dev->netdev_ops = &mlx4_netdev_ops;
2584         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2585         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2586         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2587
2588         dev->ethtool_ops = &mlx4_en_ethtool_ops;
2589
2590         /*
2591          * Set driver features
2592          */
2593         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2594         if (mdev->LSO_support)
2595                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2596
2597         dev->vlan_features = dev->hw_features;
2598
2599         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2600         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2601                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2602                         NETIF_F_HW_VLAN_CTAG_FILTER;
2603         dev->hw_features |= NETIF_F_LOOPBACK |
2604                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
2605
2606         if (mdev->dev->caps.steering_mode ==
2607             MLX4_STEERING_MODE_DEVICE_MANAGED &&
2608             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
2609                 dev->hw_features |= NETIF_F_NTUPLE;
2610
2611         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2612                 dev->priv_flags |= IFF_UNICAST_FLT;
2613
2614         /* Setting a default hash function value */
2615         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
2616                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
2617         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
2618                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
2619         } else {
2620                 en_warn(priv,
2621                         "No RSS hash capabilities exposed, using Toeplitz\n");
2622                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
2623         }
2624
2625         mdev->pndev[port] = dev;
2626
2627         netif_carrier_off(dev);
2628         mlx4_en_set_default_moderation(priv);
2629
2630         err = register_netdev(dev);
2631         if (err) {
2632                 en_err(priv, "Netdev registration failed for port %d\n", port);
2633                 goto out;
2634         }
2635         priv->registered = 1;
2636
2637         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2638         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2639
2640         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2641
2642         /* Configure port */
2643         mlx4_en_calc_rx_buf(dev);
2644         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2645                                     priv->rx_skb_size + ETH_FCS_LEN,
2646                                     prof->tx_pause, prof->tx_ppp,
2647                                     prof->rx_pause, prof->rx_ppp);
2648         if (err) {
2649                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
2650                        priv->port, err);
2651                 goto out;
2652         }
2653
2654         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
2655                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
2656                 if (err) {
2657                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
2658                                err);
2659                         goto out;
2660                 }
2661         }
2662
2663         /* Init port */
2664         en_warn(priv, "Initializing port\n");
2665         err = mlx4_INIT_PORT(mdev->dev, priv->port);
2666         if (err) {
2667                 en_err(priv, "Failed Initializing port\n");
2668                 goto out;
2669         }
2670         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2671
2672         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2673                 queue_delayed_work(mdev->workqueue, &priv->service_task,
2674                                    SERVICE_TASK_DELAY);
2675
2676         return 0;
2677
2678 out:
2679         mlx4_en_destroy_netdev(dev);
2680         return err;
2681 }
2682
2683 int mlx4_en_reset_config(struct net_device *dev,
2684                          struct hwtstamp_config ts_config,
2685                          netdev_features_t features)
2686 {
2687         struct mlx4_en_priv *priv = netdev_priv(dev);
2688         struct mlx4_en_dev *mdev = priv->mdev;
2689         int port_up = 0;
2690         int err = 0;
2691
2692         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
2693             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
2694             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX))
2695                 return 0; /* Nothing to change */
2696
2697         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
2698             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
2699             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
2700                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
2701                 return -EINVAL;
2702         }
2703
2704         mutex_lock(&mdev->state_lock);
2705         if (priv->port_up) {
2706                 port_up = 1;
2707                 mlx4_en_stop_port(dev, 1);
2708         }
2709
2710         mlx4_en_free_resources(priv);
2711
2712         en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
2713                 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX));
2714
2715         priv->hwtstamp_config.tx_type = ts_config.tx_type;
2716         priv->hwtstamp_config.rx_filter = ts_config.rx_filter;
2717
2718         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2719                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
2720                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
2721                 else
2722                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
2723         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
2724                 /* RX time-stamping is OFF, update the RX vlan offload
2725                  * to the latest wanted state
2726                  */
2727                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
2728                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
2729                 else
2730                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
2731         }
2732
2733         /* RX vlan offload and RX time-stamping can't co-exist !
2734          * Regardless of the caller's choice,
2735          * Turn Off RX vlan offload in case of time-stamping is ON
2736          */
2737         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
2738                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
2739                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
2740                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
2741         }
2742
2743         err = mlx4_en_alloc_resources(priv);
2744         if (err) {
2745                 en_err(priv, "Failed reallocating port resources\n");
2746                 goto out;
2747         }
2748         if (port_up) {
2749                 err = mlx4_en_start_port(dev);
2750                 if (err)
2751                         en_err(priv, "Failed starting port\n");
2752         }
2753
2754 out:
2755         mutex_unlock(&mdev->state_lock);
2756         netdev_features_change(dev);
2757         return err;
2758 }