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
  43 #include <linux/mlx4/driver.h>
  44 #include <linux/mlx4/device.h>
  45 #include <linux/mlx4/cmd.h>
  46 #include <linux/mlx4/cq.h>
  47
  48 #include "mlx4_en.h"
  49 #include "en_port.h"
  50
  51 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  52 {
  53         struct mlx4_en_priv *priv = netdev_priv(dev);
  54         int i;
  55         unsigned int offset = 0;
  56
  57         if (up && up != MLX4_EN_NUM_UP)
  58                 return -EINVAL;
  59
  60         netdev_set_num_tc(dev, up);
  61
  62         /* Partition Tx queues evenly amongst UP's */
  63         for (i = 0; i < up; i++) {
  64                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  65                 offset += priv->num_tx_rings_p_up;
  66         }
  67
  68         return 0;
  69 }
  70
  71 #ifdef CONFIG_NET_RX_BUSY_POLL
  72 /* must be called with local_bh_disable()d */
  73 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
  74 {
  75         struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
  76         struct net_device *dev = cq->dev;
  77         struct mlx4_en_priv *priv = netdev_priv(dev);
  78         struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
  79         int done;
  80
  81         if (!priv->port_up)
  82                 return LL_FLUSH_FAILED;
  83
  84         if (!mlx4_en_cq_lock_poll(cq))
  85                 return LL_FLUSH_BUSY;
  86
  87         done = mlx4_en_process_rx_cq(dev, cq, 4);
  88         if (likely(done))
  89                 rx_ring->cleaned += done;
  90         else
  91                 rx_ring->misses++;
  92
  93         mlx4_en_cq_unlock_poll(cq);
  94
  95         return done;
  96 }
  97 #endif  /* CONFIG_NET_RX_BUSY_POLL */
  98
  99 #ifdef CONFIG_RFS_ACCEL
 100
 101 struct mlx4_en_filter {
 102         struct list_head next;
 103         struct work_struct work;
 104
 105         u8     ip_proto;
 106         __be32 src_ip;
 107         __be32 dst_ip;
 108         __be16 src_port;
 109         __be16 dst_port;
 110
 111         int rxq_index;
 112         struct mlx4_en_priv *priv;
 113         u32 flow_id;                    /* RFS infrastructure id */
 114         int id;                         /* mlx4_en driver id */
 115         u64 reg_id;                     /* Flow steering API id */
 116         u8 activated;                   /* Used to prevent expiry before filter
 117                                          * is attached
 118                                          */
 119         struct hlist_node filter_chain;
 120 };
 121
 122 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 123
 124 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 125 {
 126         switch (ip_proto) {
 127         case IPPROTO_UDP:
 128                 return MLX4_NET_TRANS_RULE_ID_UDP;
 129         case IPPROTO_TCP:
 130                 return MLX4_NET_TRANS_RULE_ID_TCP;
 131         default:
 132                 return -EPROTONOSUPPORT;
 133         }
 134 };
 135
 136 static void mlx4_en_filter_work(struct work_struct *work)
 137 {
 138         struct mlx4_en_filter *filter = container_of(work,
 139                                                      struct mlx4_en_filter,
 140                                                      work);
 141         struct mlx4_en_priv *priv = filter->priv;
 142         struct mlx4_spec_list spec_tcp_udp = {
 143                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 144                 {
 145                         .tcp_udp = {
 146                                 .dst_port = filter->dst_port,
 147                                 .dst_port_msk = (__force __be16)-1,
 148                                 .src_port = filter->src_port,
 149                                 .src_port_msk = (__force __be16)-1,
 150                         },
 151                 },
 152         };
 153         struct mlx4_spec_list spec_ip = {
 154                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 155                 {
 156                         .ipv4 = {
 157                                 .dst_ip = filter->dst_ip,
 158                                 .dst_ip_msk = (__force __be32)-1,
 159                                 .src_ip = filter->src_ip,
 160                                 .src_ip_msk = (__force __be32)-1,
 161                         },
 162                 },
 163         };
 164         struct mlx4_spec_list spec_eth = {
 165                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 166         };
 167         struct mlx4_net_trans_rule rule = {
 168                 .list = LIST_HEAD_INIT(rule.list),
 169                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 170                 .exclusive = 1,
 171                 .allow_loopback = 1,
 172                 .promisc_mode = MLX4_FS_REGULAR,
 173                 .port = priv->port,
 174                 .priority = MLX4_DOMAIN_RFS,
 175         };
 176         int rc;
 177         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 178
 179         if (spec_tcp_udp.id < 0) {
 180                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 181                         filter->ip_proto);
 182                 goto ignore;
 183         }
 184         list_add_tail(&spec_eth.list, &rule.list);
 185         list_add_tail(&spec_ip.list, &rule.list);
 186         list_add_tail(&spec_tcp_udp.list, &rule.list);
 187
 188         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 189         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 190         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 191
 192         filter->activated = 0;
 193
 194         if (filter->reg_id) {
 195                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 196                 if (rc && rc != -ENOENT)
 197                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 198         }
 199
 200         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 201         if (rc)
 202                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 203
 204 ignore:
 205         mlx4_en_filter_rfs_expire(priv);
 206
 207         filter->activated = 1;
 208 }
 209
 210 static inline struct hlist_head *
 211 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 212                    __be16 src_port, __be16 dst_port)
 213 {
 214         unsigned long l;
 215         int bucket_idx;
 216
 217         l = (__force unsigned long)src_port |
 218             ((__force unsigned long)dst_port << 2);
 219         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 220
 221         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 222
 223         return &priv->filter_hash[bucket_idx];
 224 }
 225
 226 static struct mlx4_en_filter *
 227 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 228                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 229                      __be16 dst_port, u32 flow_id)
 230 {
 231         struct mlx4_en_filter *filter = NULL;
 232
 233         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 234         if (!filter)
 235                 return NULL;
 236
 237         filter->priv = priv;
 238         filter->rxq_index = rxq_index;
 239         INIT_WORK(&filter->work, mlx4_en_filter_work);
 240
 241         filter->src_ip = src_ip;
 242         filter->dst_ip = dst_ip;
 243         filter->ip_proto = ip_proto;
 244         filter->src_port = src_port;
 245         filter->dst_port = dst_port;
 246
 247         filter->flow_id = flow_id;
 248
 249         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 250
 251         list_add_tail(&filter->next, &priv->filters);
 252         hlist_add_head(&filter->filter_chain,
 253                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 254                                           dst_port));
 255
 256         return filter;
 257 }
 258
 259 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 260 {
 261         struct mlx4_en_priv *priv = filter->priv;
 262         int rc;
 263
 264         list_del(&filter->next);
 265
 266         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 267         if (rc && rc != -ENOENT)
 268                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 269
 270         kfree(filter);
 271 }
 272
 273 static inline struct mlx4_en_filter *
 274 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 275                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 276 {
 277         struct mlx4_en_filter *filter;
 278         struct mlx4_en_filter *ret = NULL;
 279
 280         hlist_for_each_entry(filter,
 281                              filter_hash_bucket(priv, src_ip, dst_ip,
 282                                                 src_port, dst_port),
 283                              filter_chain) {
 284                 if (filter->src_ip == src_ip &&
 285                     filter->dst_ip == dst_ip &&
 286                     filter->ip_proto == ip_proto &&
 287                     filter->src_port == src_port &&
 288                     filter->dst_port == dst_port) {
 289                         ret = filter;
 290                         break;
 291                 }
 292         }
 293
 294         return ret;
 295 }
 296
 297 static int
 298 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 299                    u16 rxq_index, u32 flow_id)
 300 {
 301         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 302         struct mlx4_en_filter *filter;
 303         const struct iphdr *ip;
 304         const __be16 *ports;
 305         u8 ip_proto;
 306         __be32 src_ip;
 307         __be32 dst_ip;
 308         __be16 src_port;
 309         __be16 dst_port;
 310         int nhoff = skb_network_offset(skb);
 311         int ret = 0;
 312
 313         if (skb->protocol != htons(ETH_P_IP))
 314                 return -EPROTONOSUPPORT;
 315
 316         ip = (const struct iphdr *)(skb->data + nhoff);
 317         if (ip_is_fragment(ip))
 318                 return -EPROTONOSUPPORT;
 319
 320         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 321                 return -EPROTONOSUPPORT;
 322         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 323
 324         ip_proto = ip->protocol;
 325         src_ip = ip->saddr;
 326         dst_ip = ip->daddr;
 327         src_port = ports[0];
 328         dst_port = ports[1];
 329
 330         spin_lock_bh(&priv->filters_lock);
 331         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 332                                      src_port, dst_port);
 333         if (filter) {
 334                 if (filter->rxq_index == rxq_index)
 335                         goto out;
 336
 337                 filter->rxq_index = rxq_index;
 338         } else {
 339                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 340                                               src_ip, dst_ip, ip_proto,
 341                                               src_port, dst_port, flow_id);
 342                 if (!filter) {
 343                         ret = -ENOMEM;
 344                         goto err;
 345                 }
 346         }
 347
 348         queue_work(priv->mdev->workqueue, &filter->work);
 349
 350 out:
 351         ret = filter->id;
 352 err:
 353         spin_unlock_bh(&priv->filters_lock);
 354
 355         return ret;
 356 }
 357
 358 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 359 {
 360         struct mlx4_en_filter *filter, *tmp;
 361         LIST_HEAD(del_list);
 362
 363         spin_lock_bh(&priv->filters_lock);
 364         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 365                 list_move(&filter->next, &del_list);
 366                 hlist_del(&filter->filter_chain);
 367         }
 368         spin_unlock_bh(&priv->filters_lock);
 369
 370         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 371                 cancel_work_sync(&filter->work);
 372                 mlx4_en_filter_free(filter);
 373         }
 374 }
 375
 376 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 377 {
 378         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 379         LIST_HEAD(del_list);
 380         int i = 0;
 381
 382         spin_lock_bh(&priv->filters_lock);
 383         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 384                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 385                         break;
 386
 387                 if (filter->activated &&
 388                     !work_pending(&filter->work) &&
 389                     rps_may_expire_flow(priv->dev,
 390                                         filter->rxq_index, filter->flow_id,
 391                                         filter->id)) {
 392                         list_move(&filter->next, &del_list);
 393                         hlist_del(&filter->filter_chain);
 394                 } else
 395                         last_filter = filter;
 396
 397                 i++;
 398         }
 399
 400         if (last_filter && (&last_filter->next != priv->filters.next))
 401                 list_move(&priv->filters, &last_filter->next);
 402
 403         spin_unlock_bh(&priv->filters_lock);
 404
 405         list_for_each_entry_safe(filter, tmp, &del_list, next)
 406                 mlx4_en_filter_free(filter);
 407 }
 408 #endif
 409
 410 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 411                                    __be16 proto, u16 vid)
 412 {
 413         struct mlx4_en_priv *priv = netdev_priv(dev);
 414         struct mlx4_en_dev *mdev = priv->mdev;
 415         int err;
 416         int idx;
 417
 418         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 419
 420         set_bit(vid, priv->active_vlans);
 421
 422         /* Add VID to port VLAN filter */
 423         mutex_lock(&mdev->state_lock);
 424         if (mdev->device_up && priv->port_up) {
 425                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 426                 if (err)
 427                         en_err(priv, "Failed configuring VLAN filter\n");
 428         }
 429         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 430                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 431         mutex_unlock(&mdev->state_lock);
 432
 433         return 0;
 434 }
 435
 436 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 437                                     __be16 proto, u16 vid)
 438 {
 439         struct mlx4_en_priv *priv = netdev_priv(dev);
 440         struct mlx4_en_dev *mdev = priv->mdev;
 441         int err;
 442
 443         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 444
 445         clear_bit(vid, priv->active_vlans);
 446
 447         /* Remove VID from port VLAN filter */
 448         mutex_lock(&mdev->state_lock);
 449         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 450
 451         if (mdev->device_up && priv->port_up) {
 452                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 453                 if (err)
 454                         en_err(priv, "Failed configuring VLAN filter\n");
 455         }
 456         mutex_unlock(&mdev->state_lock);
 457
 458         return 0;
 459 }
 460
 461 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 462 {
 463         int i;
 464         for (i = ETH_ALEN - 1; i >= 0; --i) {
 465                 dst_mac[i] = src_mac & 0xff;
 466                 src_mac >>= 8;
 467         }
 468         memset(&dst_mac[ETH_ALEN], 0, 2);
 469 }
 470
 471 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 472                                 unsigned char *mac, int *qpn, u64 *reg_id)
 473 {
 474         struct mlx4_en_dev *mdev = priv->mdev;
 475         struct mlx4_dev *dev = mdev->dev;
 476         int err;
 477
 478         switch (dev->caps.steering_mode) {
 479         case MLX4_STEERING_MODE_B0: {
 480                 struct mlx4_qp qp;
 481                 u8 gid[16] = {0};
 482
 483                 qp.qpn = *qpn;
 484                 memcpy(&gid[10], mac, ETH_ALEN);
 485                 gid[5] = priv->port;
 486
 487                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 488                 break;
 489         }
 490         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 491                 struct mlx4_spec_list spec_eth = { {NULL} };
 492                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 493
 494                 struct mlx4_net_trans_rule rule = {
 495                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 496                         .exclusive = 0,
 497                         .allow_loopback = 1,
 498                         .promisc_mode = MLX4_FS_REGULAR,
 499                         .priority = MLX4_DOMAIN_NIC,
 500                 };
 501
 502                 rule.port = priv->port;
 503                 rule.qpn = *qpn;
 504                 INIT_LIST_HEAD(&rule.list);
 505
 506                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 507                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 508                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 509                 list_add_tail(&spec_eth.list, &rule.list);
 510
 511                 err = mlx4_flow_attach(dev, &rule, reg_id);
 512                 break;
 513         }
 514         default:
 515                 return -EINVAL;
 516         }
 517         if (err)
 518                 en_warn(priv, "Failed Attaching Unicast\n");
 519
 520         return err;
 521 }
 522
 523 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 524                                      unsigned char *mac, int qpn, u64 reg_id)
 525 {
 526         struct mlx4_en_dev *mdev = priv->mdev;
 527         struct mlx4_dev *dev = mdev->dev;
 528
 529         switch (dev->caps.steering_mode) {
 530         case MLX4_STEERING_MODE_B0: {
 531                 struct mlx4_qp qp;
 532                 u8 gid[16] = {0};
 533
 534                 qp.qpn = qpn;
 535                 memcpy(&gid[10], mac, ETH_ALEN);
 536                 gid[5] = priv->port;
 537
 538                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 539                 break;
 540         }
 541         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 542                 mlx4_flow_detach(dev, reg_id);
 543                 break;
 544         }
 545         default:
 546                 en_err(priv, "Invalid steering mode.\n");
 547         }
 548 }
 549
 550 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 551 {
 552         struct mlx4_en_dev *mdev = priv->mdev;
 553         struct mlx4_dev *dev = mdev->dev;
 554         struct mlx4_mac_entry *entry;
 555         int index = 0;
 556         int err = 0;
 557         u64 reg_id;
 558         int *qpn = &priv->base_qpn;
 559         u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
 560
 561         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 562                priv->dev->dev_addr);
 563         index = mlx4_register_mac(dev, priv->port, mac);
 564         if (index < 0) {
 565                 err = index;
 566                 en_err(priv, "Failed adding MAC: %pM\n",
 567                        priv->dev->dev_addr);
 568                 return err;
 569         }
 570
 571         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 572                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 573                 *qpn = base_qpn + index;
 574                 return 0;
 575         }
 576
 577         err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
 578         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 579         if (err) {
 580                 en_err(priv, "Failed to reserve qp for mac registration\n");
 581                 goto qp_err;
 582         }
 583
 584         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
 585         if (err)
 586                 goto steer_err;
 587
 588         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
 589         if (!entry) {
 590                 err = -ENOMEM;
 591                 goto alloc_err;
 592         }
 593         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
 594         entry->reg_id = reg_id;
 595
 596         hlist_add_head_rcu(&entry->hlist,
 597                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
 598
 599         return 0;
 600
 601 alloc_err:
 602         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
 603
 604 steer_err:
 605         mlx4_qp_release_range(dev, *qpn, 1);
 606
 607 qp_err:
 608         mlx4_unregister_mac(dev, priv->port, mac);
 609         return err;
 610 }
 611
 612 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 613 {
 614         struct mlx4_en_dev *mdev = priv->mdev;
 615         struct mlx4_dev *dev = mdev->dev;
 616         int qpn = priv->base_qpn;
 617         u64 mac;
 618
 619         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 620                 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
 621                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 622                        priv->dev->dev_addr);
 623                 mlx4_unregister_mac(dev, priv->port, mac);
 624         } else {
 625                 struct mlx4_mac_entry *entry;
 626                 struct hlist_node *tmp;
 627                 struct hlist_head *bucket;
 628                 unsigned int i;
 629
 630                 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
 631                         bucket = &priv->mac_hash[i];
 632                         hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 633                                 mac = mlx4_en_mac_to_u64(entry->mac);
 634                                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 635                                        entry->mac);
 636                                 mlx4_en_uc_steer_release(priv, entry->mac,
 637                                                          qpn, entry->reg_id);
 638
 639                                 mlx4_unregister_mac(dev, priv->port, mac);
 640                                 hlist_del_rcu(&entry->hlist);
 641                                 kfree_rcu(entry, rcu);
 642                         }
 643                 }
 644
 645                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 646                        priv->port, qpn);
 647                 mlx4_qp_release_range(dev, qpn, 1);
 648                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 649         }
 650 }
 651
 652 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 653                                unsigned char *new_mac, unsigned char *prev_mac)
 654 {
 655         struct mlx4_en_dev *mdev = priv->mdev;
 656         struct mlx4_dev *dev = mdev->dev;
 657         int err = 0;
 658         u64 new_mac_u64 = mlx4_en_mac_to_u64(new_mac);
 659
 660         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 661                 struct hlist_head *bucket;
 662                 unsigned int mac_hash;
 663                 struct mlx4_mac_entry *entry;
 664                 struct hlist_node *tmp;
 665                 u64 prev_mac_u64 = mlx4_en_mac_to_u64(prev_mac);
 666
 667                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 668                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 669                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 670                                 mlx4_en_uc_steer_release(priv, entry->mac,
 671                                                          qpn, entry->reg_id);
 672                                 mlx4_unregister_mac(dev, priv->port,
 673                                                     prev_mac_u64);
 674                                 hlist_del_rcu(&entry->hlist);
 675                                 synchronize_rcu();
 676                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 677                                 entry->reg_id = 0;
 678                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 679                                 hlist_add_head_rcu(&entry->hlist,
 680                                                    &priv->mac_hash[mac_hash]);
 681                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 682                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 683                                                            &qpn,
 684                                                            &entry->reg_id);
 685                                 return err;
 686                         }
 687                 }
 688                 return -EINVAL;
 689         }
 690
 691         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 692 }
 693
 694 u64 mlx4_en_mac_to_u64(u8 *addr)
 695 {
 696         u64 mac = 0;
 697         int i;
 698
 699         for (i = 0; i < ETH_ALEN; i++) {
 700                 mac <<= 8;
 701                 mac |= addr[i];
 702         }
 703         return mac;
 704 }
 705
 706 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv)
 707 {
 708         int err = 0;
 709
 710         if (priv->port_up) {
 711                 /* Remove old MAC and insert the new one */
 712                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 713                                           priv->dev->dev_addr, priv->prev_mac);
 714                 if (err)
 715                         en_err(priv, "Failed changing HW MAC address\n");
 716                 memcpy(priv->prev_mac, priv->dev->dev_addr,
 717                        sizeof(priv->prev_mac));
 718         } else
 719                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 720
 721         return err;
 722 }
 723
 724 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 725 {
 726         struct mlx4_en_priv *priv = netdev_priv(dev);
 727         struct mlx4_en_dev *mdev = priv->mdev;
 728         struct sockaddr *saddr = addr;
 729         int err;
 730
 731         if (!is_valid_ether_addr(saddr->sa_data))
 732                 return -EADDRNOTAVAIL;
 733
 734         memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 735
 736         mutex_lock(&mdev->state_lock);
 737         err = mlx4_en_do_set_mac(priv);
 738         mutex_unlock(&mdev->state_lock);
 739
 740         return err;
 741 }
 742
 743 static void mlx4_en_clear_list(struct net_device *dev)
 744 {
 745         struct mlx4_en_priv *priv = netdev_priv(dev);
 746         struct mlx4_en_mc_list *tmp, *mc_to_del;
 747
 748         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 749                 list_del(&mc_to_del->list);
 750                 kfree(mc_to_del);
 751         }
 752 }
 753
 754 static void mlx4_en_cache_mclist(struct net_device *dev)
 755 {
 756         struct mlx4_en_priv *priv = netdev_priv(dev);
 757         struct netdev_hw_addr *ha;
 758         struct mlx4_en_mc_list *tmp;
 759
 760         mlx4_en_clear_list(dev);
 761         netdev_for_each_mc_addr(ha, dev) {
 762                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 763                 if (!tmp) {
 764                         mlx4_en_clear_list(dev);
 765                         return;
 766                 }
 767                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 768                 list_add_tail(&tmp->list, &priv->mc_list);
 769         }
 770 }
 771
 772 static void update_mclist_flags(struct mlx4_en_priv *priv,
 773                                 struct list_head *dst,
 774                                 struct list_head *src)
 775 {
 776         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 777         bool found;
 778
 779         /* Find all the entries that should be removed from dst,
 780          * These are the entries that are not found in src
 781          */
 782         list_for_each_entry(dst_tmp, dst, list) {
 783                 found = false;
 784                 list_for_each_entry(src_tmp, src, list) {
 785                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 786                                 found = true;
 787                                 break;
 788                         }
 789                 }
 790                 if (!found)
 791                         dst_tmp->action = MCLIST_REM;
 792         }
 793
 794         /* Add entries that exist in src but not in dst
 795          * mark them as need to add
 796          */
 797         list_for_each_entry(src_tmp, src, list) {
 798                 found = false;
 799                 list_for_each_entry(dst_tmp, dst, list) {
 800                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 801                                 dst_tmp->action = MCLIST_NONE;
 802                                 found = true;
 803                                 break;
 804                         }
 805                 }
 806                 if (!found) {
 807                         new_mc = kmemdup(src_tmp,
 808                                          sizeof(struct mlx4_en_mc_list),
 809                                          GFP_KERNEL);
 810                         if (!new_mc)
 811                                 return;
 812
 813                         new_mc->action = MCLIST_ADD;
 814                         list_add_tail(&new_mc->list, dst);
 815                 }
 816         }
 817 }
 818
 819 static void mlx4_en_set_rx_mode(struct net_device *dev)
 820 {
 821         struct mlx4_en_priv *priv = netdev_priv(dev);
 822
 823         if (!priv->port_up)
 824                 return;
 825
 826         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 827 }
 828
 829 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 830                                      struct mlx4_en_dev *mdev)
 831 {
 832         int err = 0;
 833
 834         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 835                 if (netif_msg_rx_status(priv))
 836                         en_warn(priv, "Entering promiscuous mode\n");
 837                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 838
 839                 /* Enable promiscouos mode */
 840                 switch (mdev->dev->caps.steering_mode) {
 841                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 842                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 843                                                           priv->port,
 844                                                           priv->base_qpn,
 845                                                           MLX4_FS_ALL_DEFAULT);
 846                         if (err)
 847                                 en_err(priv, "Failed enabling promiscuous mode\n");
 848                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 849                         break;
 850
 851                 case MLX4_STEERING_MODE_B0:
 852                         err = mlx4_unicast_promisc_add(mdev->dev,
 853                                                        priv->base_qpn,
 854                                                        priv->port);
 855                         if (err)
 856                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 857
 858                         /* Add the default qp number as multicast
 859                          * promisc
 860                          */
 861                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 862                                 err = mlx4_multicast_promisc_add(mdev->dev,
 863                                                                  priv->base_qpn,
 864                                                                  priv->port);
 865                                 if (err)
 866                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 867                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 868                         }
 869                         break;
 870
 871                 case MLX4_STEERING_MODE_A0:
 872                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 873                                                      priv->port,
 874                                                      priv->base_qpn,
 875                                                      1);
 876                         if (err)
 877                                 en_err(priv, "Failed enabling promiscuous mode\n");
 878                         break;
 879                 }
 880
 881                 /* Disable port multicast filter (unconditionally) */
 882                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 883                                           0, MLX4_MCAST_DISABLE);
 884                 if (err)
 885                         en_err(priv, "Failed disabling multicast filter\n");
 886
 887                 /* Disable port VLAN filter */
 888                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 889                 if (err)
 890                         en_err(priv, "Failed disabling VLAN filter\n");
 891         }
 892 }
 893
 894 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 895                                        struct mlx4_en_dev *mdev)
 896 {
 897         int err = 0;
 898
 899         if (netif_msg_rx_status(priv))
 900                 en_warn(priv, "Leaving promiscuous mode\n");
 901         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 902
 903         /* Disable promiscouos mode */
 904         switch (mdev->dev->caps.steering_mode) {
 905         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 906                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 907                                                      priv->port,
 908                                                      MLX4_FS_ALL_DEFAULT);
 909                 if (err)
 910                         en_err(priv, "Failed disabling promiscuous mode\n");
 911                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 912                 break;
 913
 914         case MLX4_STEERING_MODE_B0:
 915                 err = mlx4_unicast_promisc_remove(mdev->dev,
 916                                                   priv->base_qpn,
 917                                                   priv->port);
 918                 if (err)
 919                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 920                 /* Disable Multicast promisc */
 921                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 922                         err = mlx4_multicast_promisc_remove(mdev->dev,
 923                                                             priv->base_qpn,
 924                                                             priv->port);
 925                         if (err)
 926                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 927                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 928                 }
 929                 break;
 930
 931         case MLX4_STEERING_MODE_A0:
 932                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 933                                              priv->port,
 934                                              priv->base_qpn, 0);
 935                 if (err)
 936                         en_err(priv, "Failed disabling promiscuous mode\n");
 937                 break;
 938         }
 939
 940         /* Enable port VLAN filter */
 941         err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 942         if (err)
 943                 en_err(priv, "Failed enabling VLAN filter\n");
 944 }
 945
 946 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 947                                  struct net_device *dev,
 948                                  struct mlx4_en_dev *mdev)
 949 {
 950         struct mlx4_en_mc_list *mclist, *tmp;
 951         u64 mcast_addr = 0;
 952         u8 mc_list[16] = {0};
 953         int err = 0;
 954
 955         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 956         if (dev->flags & IFF_ALLMULTI) {
 957                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 958                                           0, MLX4_MCAST_DISABLE);
 959                 if (err)
 960                         en_err(priv, "Failed disabling multicast filter\n");
 961
 962                 /* Add the default qp number as multicast promisc */
 963                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 964                         switch (mdev->dev->caps.steering_mode) {
 965                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 966                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 967                                                                   priv->port,
 968                                                                   priv->base_qpn,
 969                                                                   MLX4_FS_MC_DEFAULT);
 970                                 break;
 971
 972                         case MLX4_STEERING_MODE_B0:
 973                                 err = mlx4_multicast_promisc_add(mdev->dev,
 974                                                                  priv->base_qpn,
 975                                                                  priv->port);
 976                                 break;
 977
 978                         case MLX4_STEERING_MODE_A0:
 979                                 break;
 980                         }
 981                         if (err)
 982                                 en_err(priv, "Failed entering multicast promisc mode\n");
 983                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 984                 }
 985         } else {
 986                 /* Disable Multicast promisc */
 987                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 988                         switch (mdev->dev->caps.steering_mode) {
 989                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 990                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 991                                                                      priv->port,
 992                                                                      MLX4_FS_MC_DEFAULT);
 993                                 break;
 994
 995                         case MLX4_STEERING_MODE_B0:
 996                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 997                                                                     priv->base_qpn,
 998                                                                     priv->port);
 999                                 break;
1000
1001                         case MLX4_STEERING_MODE_A0:
1002                                 break;
1003                         }
1004                         if (err)
1005                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1006                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1007                 }
1008
1009                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1010                                           0, MLX4_MCAST_DISABLE);
1011                 if (err)
1012                         en_err(priv, "Failed disabling multicast filter\n");
1013
1014                 /* Flush mcast filter and init it with broadcast address */
1015                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1016                                     1, MLX4_MCAST_CONFIG);
1017
1018                 /* Update multicast list - we cache all addresses so they won't
1019                  * change while HW is updated holding the command semaphor */
1020                 netif_addr_lock_bh(dev);
1021                 mlx4_en_cache_mclist(dev);
1022                 netif_addr_unlock_bh(dev);
1023                 list_for_each_entry(mclist, &priv->mc_list, list) {
1024                         mcast_addr = mlx4_en_mac_to_u64(mclist->addr);
1025                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1026                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
1027                 }
1028                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1029                                           0, MLX4_MCAST_ENABLE);
1030                 if (err)
1031                         en_err(priv, "Failed enabling multicast filter\n");
1032
1033                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1034                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1035                         if (mclist->action == MCLIST_REM) {
1036                                 /* detach this address and delete from list */
1037                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1038                                 mc_list[5] = priv->port;
1039                                 err = mlx4_multicast_detach(mdev->dev,
1040                                                             &priv->rss_map.indir_qp,
1041                                                             mc_list,
1042                                                             MLX4_PROT_ETH,
1043                                                             mclist->reg_id);
1044                                 if (err)
1045                                         en_err(priv, "Fail to detach multicast address\n");
1046
1047                                 /* remove from list */
1048                                 list_del(&mclist->list);
1049                                 kfree(mclist);
1050                         } else if (mclist->action == MCLIST_ADD) {
1051                                 /* attach the address */
1052                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1053                                 /* needed for B0 steering support */
1054                                 mc_list[5] = priv->port;
1055                                 err = mlx4_multicast_attach(mdev->dev,
1056                                                             &priv->rss_map.indir_qp,
1057                                                             mc_list,
1058                                                             priv->port, 0,
1059                                                             MLX4_PROT_ETH,
1060                                                             &mclist->reg_id);
1061                                 if (err)
1062                                         en_err(priv, "Fail to attach multicast address\n");
1063
1064                         }
1065                 }
1066         }
1067 }
1068
1069 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1070                                  struct net_device *dev,
1071                                  struct mlx4_en_dev *mdev)
1072 {
1073         struct netdev_hw_addr *ha;
1074         struct mlx4_mac_entry *entry;
1075         struct hlist_node *tmp;
1076         bool found;
1077         u64 mac;
1078         int err = 0;
1079         struct hlist_head *bucket;
1080         unsigned int i;
1081         int removed = 0;
1082         u32 prev_flags;
1083
1084         /* Note that we do not need to protect our mac_hash traversal with rcu,
1085          * since all modification code is protected by mdev->state_lock
1086          */
1087
1088         /* find what to remove */
1089         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1090                 bucket = &priv->mac_hash[i];
1091                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1092                         found = false;
1093                         netdev_for_each_uc_addr(ha, dev) {
1094                                 if (ether_addr_equal_64bits(entry->mac,
1095                                                             ha->addr)) {
1096                                         found = true;
1097                                         break;
1098                                 }
1099                         }
1100
1101                         /* MAC address of the port is not in uc list */
1102                         if (ether_addr_equal_64bits(entry->mac, dev->dev_addr))
1103                                 found = true;
1104
1105                         if (!found) {
1106                                 mac = mlx4_en_mac_to_u64(entry->mac);
1107                                 mlx4_en_uc_steer_release(priv, entry->mac,
1108                                                          priv->base_qpn,
1109                                                          entry->reg_id);
1110                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1111
1112                                 hlist_del_rcu(&entry->hlist);
1113                                 kfree_rcu(entry, rcu);
1114                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1115                                        entry->mac, priv->port);
1116                                 ++removed;
1117                         }
1118                 }
1119         }
1120
1121         /* if we didn't remove anything, there is no use in trying to add
1122          * again once we are in a forced promisc mode state
1123          */
1124         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1125                 return;
1126
1127         prev_flags = priv->flags;
1128         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1129
1130         /* find what to add */
1131         netdev_for_each_uc_addr(ha, dev) {
1132                 found = false;
1133                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1134                 hlist_for_each_entry(entry, bucket, hlist) {
1135                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1136                                 found = true;
1137                                 break;
1138                         }
1139                 }
1140
1141                 if (!found) {
1142                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1143                         if (!entry) {
1144                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1145                                        ha->addr, priv->port);
1146                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1147                                 break;
1148                         }
1149                         mac = mlx4_en_mac_to_u64(ha->addr);
1150                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1151                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1152                         if (err < 0) {
1153                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1154                                        ha->addr, priv->port, err);
1155                                 kfree(entry);
1156                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1157                                 break;
1158                         }
1159                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1160                                                    &priv->base_qpn,
1161                                                    &entry->reg_id);
1162                         if (err) {
1163                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1164                                        ha->addr, priv->port, err);
1165                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1166                                 kfree(entry);
1167                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1168                                 break;
1169                         } else {
1170                                 unsigned int mac_hash;
1171                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1172                                        ha->addr, priv->port);
1173                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1174                                 bucket = &priv->mac_hash[mac_hash];
1175                                 hlist_add_head_rcu(&entry->hlist, bucket);
1176                         }
1177                 }
1178         }
1179
1180         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1181                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1182                         priv->port);
1183         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1184                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1185                         priv->port);
1186         }
1187 }
1188
1189 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1190 {
1191         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1192                                                  rx_mode_task);
1193         struct mlx4_en_dev *mdev = priv->mdev;
1194         struct net_device *dev = priv->dev;
1195
1196         mutex_lock(&mdev->state_lock);
1197         if (!mdev->device_up) {
1198                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1199                 goto out;
1200         }
1201         if (!priv->port_up) {
1202                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1203                 goto out;
1204         }
1205
1206         if (!netif_carrier_ok(dev)) {
1207                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1208                         if (priv->port_state.link_state) {
1209                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1210                                 netif_carrier_on(dev);
1211                                 en_dbg(LINK, priv, "Link Up\n");
1212                         }
1213                 }
1214         }
1215
1216         if (dev->priv_flags & IFF_UNICAST_FLT)
1217                 mlx4_en_do_uc_filter(priv, dev, mdev);
1218
1219         /* Promsicuous mode: disable all filters */
1220         if ((dev->flags & IFF_PROMISC) ||
1221             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1222                 mlx4_en_set_promisc_mode(priv, mdev);
1223                 goto out;
1224         }
1225
1226         /* Not in promiscuous mode */
1227         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1228                 mlx4_en_clear_promisc_mode(priv, mdev);
1229
1230         mlx4_en_do_multicast(priv, dev, mdev);
1231 out:
1232         mutex_unlock(&mdev->state_lock);
1233 }
1234
1235 #ifdef CONFIG_NET_POLL_CONTROLLER
1236 static void mlx4_en_netpoll(struct net_device *dev)
1237 {
1238         struct mlx4_en_priv *priv = netdev_priv(dev);
1239         struct mlx4_en_cq *cq;
1240         unsigned long flags;
1241         int i;
1242
1243         for (i = 0; i < priv->rx_ring_num; i++) {
1244                 cq = priv->rx_cq[i];
1245                 spin_lock_irqsave(&cq->lock, flags);
1246                 napi_synchronize(&cq->napi);
1247                 mlx4_en_process_rx_cq(dev, cq, 0);
1248                 spin_unlock_irqrestore(&cq->lock, flags);
1249         }
1250 }
1251 #endif
1252
1253 static void mlx4_en_tx_timeout(struct net_device *dev)
1254 {
1255         struct mlx4_en_priv *priv = netdev_priv(dev);
1256         struct mlx4_en_dev *mdev = priv->mdev;
1257         int i;
1258
1259         if (netif_msg_timer(priv))
1260                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1261
1262         for (i = 0; i < priv->tx_ring_num; i++) {
1263                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1264                         continue;
1265                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1266                         i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1267                         priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1268         }
1269
1270         priv->port_stats.tx_timeout++;
1271         en_dbg(DRV, priv, "Scheduling watchdog\n");
1272         queue_work(mdev->workqueue, &priv->watchdog_task);
1273 }
1274
1275
1276 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1277 {
1278         struct mlx4_en_priv *priv = netdev_priv(dev);
1279
1280         spin_lock_bh(&priv->stats_lock);
1281         memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1282         spin_unlock_bh(&priv->stats_lock);
1283
1284         return &priv->ret_stats;
1285 }
1286
1287 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1288 {
1289         struct mlx4_en_cq *cq;
1290         int i;
1291
1292         /* If we haven't received a specific coalescing setting
1293          * (module param), we set the moderation parameters as follows:
1294          * - moder_cnt is set to the number of mtu sized packets to
1295          *   satisfy our coalescing target.
1296          * - moder_time is set to a fixed value.
1297          */
1298         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1299         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1300         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1301         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1302         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1303                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1304
1305         /* Setup cq moderation params */
1306         for (i = 0; i < priv->rx_ring_num; i++) {
1307                 cq = priv->rx_cq[i];
1308                 cq->moder_cnt = priv->rx_frames;
1309                 cq->moder_time = priv->rx_usecs;
1310                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1311                 priv->last_moder_packets[i] = 0;
1312                 priv->last_moder_bytes[i] = 0;
1313         }
1314
1315         for (i = 0; i < priv->tx_ring_num; i++) {
1316                 cq = priv->tx_cq[i];
1317                 cq->moder_cnt = priv->tx_frames;
1318                 cq->moder_time = priv->tx_usecs;
1319         }
1320
1321         /* Reset auto-moderation params */
1322         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1323         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1324         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1325         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1326         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1327         priv->adaptive_rx_coal = 1;
1328         priv->last_moder_jiffies = 0;
1329         priv->last_moder_tx_packets = 0;
1330 }
1331
1332 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1333 {
1334         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1335         struct mlx4_en_cq *cq;
1336         unsigned long packets;
1337         unsigned long rate;
1338         unsigned long avg_pkt_size;
1339         unsigned long rx_packets;
1340         unsigned long rx_bytes;
1341         unsigned long rx_pkt_diff;
1342         int moder_time;
1343         int ring, err;
1344
1345         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1346                 return;
1347
1348         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1349                 spin_lock_bh(&priv->stats_lock);
1350                 rx_packets = priv->rx_ring[ring]->packets;
1351                 rx_bytes = priv->rx_ring[ring]->bytes;
1352                 spin_unlock_bh(&priv->stats_lock);
1353
1354                 rx_pkt_diff = ((unsigned long) (rx_packets -
1355                                 priv->last_moder_packets[ring]));
1356                 packets = rx_pkt_diff;
1357                 rate = packets * HZ / period;
1358                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1359                                 priv->last_moder_bytes[ring])) / packets : 0;
1360
1361                 /* Apply auto-moderation only when packet rate
1362                  * exceeds a rate that it matters */
1363                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1364                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1365                         if (rate < priv->pkt_rate_low)
1366                                 moder_time = priv->rx_usecs_low;
1367                         else if (rate > priv->pkt_rate_high)
1368                                 moder_time = priv->rx_usecs_high;
1369                         else
1370                                 moder_time = (rate - priv->pkt_rate_low) *
1371                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1372                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1373                                         priv->rx_usecs_low;
1374                 } else {
1375                         moder_time = priv->rx_usecs_low;
1376                 }
1377
1378                 if (moder_time != priv->last_moder_time[ring]) {
1379                         priv->last_moder_time[ring] = moder_time;
1380                         cq = priv->rx_cq[ring];
1381                         cq->moder_time = moder_time;
1382                         cq->moder_cnt = priv->rx_frames;
1383                         err = mlx4_en_set_cq_moder(priv, cq);
1384                         if (err)
1385                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1386                                        ring);
1387                 }
1388                 priv->last_moder_packets[ring] = rx_packets;
1389                 priv->last_moder_bytes[ring] = rx_bytes;
1390         }
1391
1392         priv->last_moder_jiffies = jiffies;
1393 }
1394
1395 static void mlx4_en_do_get_stats(struct work_struct *work)
1396 {
1397         struct delayed_work *delay = to_delayed_work(work);
1398         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1399                                                  stats_task);
1400         struct mlx4_en_dev *mdev = priv->mdev;
1401         int err;
1402
1403         mutex_lock(&mdev->state_lock);
1404         if (mdev->device_up) {
1405                 if (priv->port_up) {
1406                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1407                         if (err)
1408                                 en_dbg(HW, priv, "Could not update stats\n");
1409
1410                         mlx4_en_auto_moderation(priv);
1411                 }
1412
1413                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1414         }
1415         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1416                 mlx4_en_do_set_mac(priv);
1417                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1418         }
1419         mutex_unlock(&mdev->state_lock);
1420 }
1421
1422 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1423  * periodically
1424  */
1425 static void mlx4_en_service_task(struct work_struct *work)
1426 {
1427         struct delayed_work *delay = to_delayed_work(work);
1428         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1429                                                  service_task);
1430         struct mlx4_en_dev *mdev = priv->mdev;
1431
1432         mutex_lock(&mdev->state_lock);
1433         if (mdev->device_up) {
1434                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1435                         mlx4_en_ptp_overflow_check(mdev);
1436
1437                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1438                                    SERVICE_TASK_DELAY);
1439         }
1440         mutex_unlock(&mdev->state_lock);
1441 }
1442
1443 static void mlx4_en_linkstate(struct work_struct *work)
1444 {
1445         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1446                                                  linkstate_task);
1447         struct mlx4_en_dev *mdev = priv->mdev;
1448         int linkstate = priv->link_state;
1449
1450         mutex_lock(&mdev->state_lock);
1451         /* If observable port state changed set carrier state and
1452          * report to system log */
1453         if (priv->last_link_state != linkstate) {
1454                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1455                         en_info(priv, "Link Down\n");
1456                         netif_carrier_off(priv->dev);
1457                 } else {
1458                         en_info(priv, "Link Up\n");
1459                         netif_carrier_on(priv->dev);
1460                 }
1461         }
1462         priv->last_link_state = linkstate;
1463         mutex_unlock(&mdev->state_lock);
1464 }
1465
1466
1467 int mlx4_en_start_port(struct net_device *dev)
1468 {
1469         struct mlx4_en_priv *priv = netdev_priv(dev);
1470         struct mlx4_en_dev *mdev = priv->mdev;
1471         struct mlx4_en_cq *cq;
1472         struct mlx4_en_tx_ring *tx_ring;
1473         int rx_index = 0;
1474         int tx_index = 0;
1475         int err = 0;
1476         int i;
1477         int j;
1478         u8 mc_list[16] = {0};
1479
1480         if (priv->port_up) {
1481                 en_dbg(DRV, priv, "start port called while port already up\n");
1482                 return 0;
1483         }
1484
1485         INIT_LIST_HEAD(&priv->mc_list);
1486         INIT_LIST_HEAD(&priv->curr_list);
1487         INIT_LIST_HEAD(&priv->ethtool_list);
1488         memset(&priv->ethtool_rules[0], 0,
1489                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1490
1491         /* Calculate Rx buf size */
1492         dev->mtu = min(dev->mtu, priv->max_mtu);
1493         mlx4_en_calc_rx_buf(dev);
1494         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1495
1496         /* Configure rx cq's and rings */
1497         err = mlx4_en_activate_rx_rings(priv);
1498         if (err) {
1499                 en_err(priv, "Failed to activate RX rings\n");
1500                 return err;
1501         }
1502         for (i = 0; i < priv->rx_ring_num; i++) {
1503                 cq = priv->rx_cq[i];
1504
1505                 mlx4_en_cq_init_lock(cq);
1506
1507                 err = mlx4_en_activate_cq(priv, cq, i);
1508                 if (err) {
1509                         en_err(priv, "Failed activating Rx CQ\n");
1510                         goto cq_err;
1511                 }
1512                 for (j = 0; j < cq->size; j++)
1513                         cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1514                 err = mlx4_en_set_cq_moder(priv, cq);
1515                 if (err) {
1516                         en_err(priv, "Failed setting cq moderation parameters");
1517                         mlx4_en_deactivate_cq(priv, cq);
1518                         goto cq_err;
1519                 }
1520                 mlx4_en_arm_cq(priv, cq);
1521                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1522                 ++rx_index;
1523         }
1524
1525         /* Set qp number */
1526         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1527         err = mlx4_en_get_qp(priv);
1528         if (err) {
1529                 en_err(priv, "Failed getting eth qp\n");
1530                 goto cq_err;
1531         }
1532         mdev->mac_removed[priv->port] = 0;
1533
1534         err = mlx4_en_config_rss_steer(priv);
1535         if (err) {
1536                 en_err(priv, "Failed configuring rss steering\n");
1537                 goto mac_err;
1538         }
1539
1540         err = mlx4_en_create_drop_qp(priv);
1541         if (err)
1542                 goto rss_err;
1543
1544         /* Configure tx cq's and rings */
1545         for (i = 0; i < priv->tx_ring_num; i++) {
1546                 /* Configure cq */
1547                 cq = priv->tx_cq[i];
1548                 err = mlx4_en_activate_cq(priv, cq, i);
1549                 if (err) {
1550                         en_err(priv, "Failed allocating Tx CQ\n");
1551                         goto tx_err;
1552                 }
1553                 err = mlx4_en_set_cq_moder(priv, cq);
1554                 if (err) {
1555                         en_err(priv, "Failed setting cq moderation parameters");
1556                         mlx4_en_deactivate_cq(priv, cq);
1557                         goto tx_err;
1558                 }
1559                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1560                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1561
1562                 /* Configure ring */
1563                 tx_ring = priv->tx_ring[i];
1564                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1565                         i / priv->num_tx_rings_p_up);
1566                 if (err) {
1567                         en_err(priv, "Failed allocating Tx ring\n");
1568                         mlx4_en_deactivate_cq(priv, cq);
1569                         goto tx_err;
1570                 }
1571                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1572
1573                 /* Arm CQ for TX completions */
1574                 mlx4_en_arm_cq(priv, cq);
1575
1576                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1577                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1578                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1579                 ++tx_index;
1580         }
1581
1582         /* Configure port */
1583         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1584                                     priv->rx_skb_size + ETH_FCS_LEN,
1585                                     priv->prof->tx_pause,
1586                                     priv->prof->tx_ppp,
1587                                     priv->prof->rx_pause,
1588                                     priv->prof->rx_ppp);
1589         if (err) {
1590                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1591                        priv->port, err);
1592                 goto tx_err;
1593         }
1594         /* Set default qp number */
1595         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1596         if (err) {
1597                 en_err(priv, "Failed setting default qp numbers\n");
1598                 goto tx_err;
1599         }
1600
1601         /* Init port */
1602         en_dbg(HW, priv, "Initializing port\n");
1603         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1604         if (err) {
1605                 en_err(priv, "Failed Initializing port\n");
1606                 goto tx_err;
1607         }
1608
1609         /* Attach rx QP to bradcast address */
1610         memset(&mc_list[10], 0xff, ETH_ALEN);
1611         mc_list[5] = priv->port; /* needed for B0 steering support */
1612         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1613                                   priv->port, 0, MLX4_PROT_ETH,
1614                                   &priv->broadcast_id))
1615                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1616
1617         /* Must redo promiscuous mode setup. */
1618         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1619
1620         /* Schedule multicast task to populate multicast list */
1621         queue_work(mdev->workqueue, &priv->rx_mode_task);
1622
1623         mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1624
1625         priv->port_up = true;
1626         netif_tx_start_all_queues(dev);
1627         netif_device_attach(dev);
1628
1629         return 0;
1630
1631 tx_err:
1632         while (tx_index--) {
1633                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1634                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1635         }
1636         mlx4_en_destroy_drop_qp(priv);
1637 rss_err:
1638         mlx4_en_release_rss_steer(priv);
1639 mac_err:
1640         mlx4_en_put_qp(priv);
1641 cq_err:
1642         while (rx_index--)
1643                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1644         for (i = 0; i < priv->rx_ring_num; i++)
1645                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1646
1647         return err; /* need to close devices */
1648 }
1649
1650
1651 void mlx4_en_stop_port(struct net_device *dev, int detach)
1652 {
1653         struct mlx4_en_priv *priv = netdev_priv(dev);
1654         struct mlx4_en_dev *mdev = priv->mdev;
1655         struct mlx4_en_mc_list *mclist, *tmp;
1656         struct ethtool_flow_id *flow, *tmp_flow;
1657         int i;
1658         u8 mc_list[16] = {0};
1659
1660         if (!priv->port_up) {
1661                 en_dbg(DRV, priv, "stop port called while port already down\n");
1662                 return;
1663         }
1664
1665         /* close port*/
1666         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1667
1668         /* Synchronize with tx routine */
1669         netif_tx_lock_bh(dev);
1670         if (detach)
1671                 netif_device_detach(dev);
1672         netif_tx_stop_all_queues(dev);
1673         netif_tx_unlock_bh(dev);
1674
1675         netif_tx_disable(dev);
1676
1677         /* Set port as not active */
1678         priv->port_up = false;
1679
1680         /* Promsicuous mode */
1681         if (mdev->dev->caps.steering_mode ==
1682             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1683                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1684                                  MLX4_EN_FLAG_MC_PROMISC);
1685                 mlx4_flow_steer_promisc_remove(mdev->dev,
1686                                                priv->port,
1687                                                MLX4_FS_ALL_DEFAULT);
1688                 mlx4_flow_steer_promisc_remove(mdev->dev,
1689                                                priv->port,
1690                                                MLX4_FS_MC_DEFAULT);
1691         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1692                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1693
1694                 /* Disable promiscouos mode */
1695                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1696                                             priv->port);
1697
1698                 /* Disable Multicast promisc */
1699                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1700                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1701                                                       priv->port);
1702                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1703                 }
1704         }
1705
1706         /* Detach All multicasts */
1707         memset(&mc_list[10], 0xff, ETH_ALEN);
1708         mc_list[5] = priv->port; /* needed for B0 steering support */
1709         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1710                               MLX4_PROT_ETH, priv->broadcast_id);
1711         list_for_each_entry(mclist, &priv->curr_list, list) {
1712                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1713                 mc_list[5] = priv->port;
1714                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1715                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1716         }
1717         mlx4_en_clear_list(dev);
1718         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1719                 list_del(&mclist->list);
1720                 kfree(mclist);
1721         }
1722
1723         /* Flush multicast filter */
1724         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1725
1726         /* Remove flow steering rules for the port*/
1727         if (mdev->dev->caps.steering_mode ==
1728             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1729                 ASSERT_RTNL();
1730                 list_for_each_entry_safe(flow, tmp_flow,
1731                                          &priv->ethtool_list, list) {
1732                         mlx4_flow_detach(mdev->dev, flow->id);
1733                         list_del(&flow->list);
1734                 }
1735         }
1736
1737         mlx4_en_destroy_drop_qp(priv);
1738
1739         /* Free TX Rings */
1740         for (i = 0; i < priv->tx_ring_num; i++) {
1741                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1742                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1743         }
1744         msleep(10);
1745
1746         for (i = 0; i < priv->tx_ring_num; i++)
1747                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1748
1749         /* Free RSS qps */
1750         mlx4_en_release_rss_steer(priv);
1751
1752         /* Unregister Mac address for the port */
1753         mlx4_en_put_qp(priv);
1754         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1755                 mdev->mac_removed[priv->port] = 1;
1756
1757         /* Free RX Rings */
1758         for (i = 0; i < priv->rx_ring_num; i++) {
1759                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1760
1761                 local_bh_disable();
1762                 while (!mlx4_en_cq_lock_napi(cq)) {
1763                         pr_info("CQ %d locked\n", i);
1764                         mdelay(1);
1765                 }
1766                 local_bh_enable();
1767
1768                 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state))
1769                         msleep(1);
1770                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1771                 mlx4_en_deactivate_cq(priv, cq);
1772         }
1773 }
1774
1775 static void mlx4_en_restart(struct work_struct *work)
1776 {
1777         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1778                                                  watchdog_task);
1779         struct mlx4_en_dev *mdev = priv->mdev;
1780         struct net_device *dev = priv->dev;
1781
1782         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1783
1784         mutex_lock(&mdev->state_lock);
1785         if (priv->port_up) {
1786                 mlx4_en_stop_port(dev, 1);
1787                 if (mlx4_en_start_port(dev))
1788                         en_err(priv, "Failed restarting port %d\n", priv->port);
1789         }
1790         mutex_unlock(&mdev->state_lock);
1791 }
1792
1793 static void mlx4_en_clear_stats(struct net_device *dev)
1794 {
1795         struct mlx4_en_priv *priv = netdev_priv(dev);
1796         struct mlx4_en_dev *mdev = priv->mdev;
1797         int i;
1798
1799         if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1800                 en_dbg(HW, priv, "Failed dumping statistics\n");
1801
1802         memset(&priv->stats, 0, sizeof(priv->stats));
1803         memset(&priv->pstats, 0, sizeof(priv->pstats));
1804         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1805         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1806
1807         for (i = 0; i < priv->tx_ring_num; i++) {
1808                 priv->tx_ring[i]->bytes = 0;
1809                 priv->tx_ring[i]->packets = 0;
1810                 priv->tx_ring[i]->tx_csum = 0;
1811         }
1812         for (i = 0; i < priv->rx_ring_num; i++) {
1813                 priv->rx_ring[i]->bytes = 0;
1814                 priv->rx_ring[i]->packets = 0;
1815                 priv->rx_ring[i]->csum_ok = 0;
1816                 priv->rx_ring[i]->csum_none = 0;
1817         }
1818 }
1819
1820 static int mlx4_en_open(struct net_device *dev)
1821 {
1822         struct mlx4_en_priv *priv = netdev_priv(dev);
1823         struct mlx4_en_dev *mdev = priv->mdev;
1824         int err = 0;
1825
1826         mutex_lock(&mdev->state_lock);
1827
1828         if (!mdev->device_up) {
1829                 en_err(priv, "Cannot open - device down/disabled\n");
1830                 err = -EBUSY;
1831                 goto out;
1832         }
1833
1834         /* Reset HW statistics and SW counters */
1835         mlx4_en_clear_stats(dev);
1836
1837         err = mlx4_en_start_port(dev);
1838         if (err)
1839                 en_err(priv, "Failed starting port:%d\n", priv->port);
1840
1841 out:
1842         mutex_unlock(&mdev->state_lock);
1843         return err;
1844 }
1845
1846
1847 static int mlx4_en_close(struct net_device *dev)
1848 {
1849         struct mlx4_en_priv *priv = netdev_priv(dev);
1850         struct mlx4_en_dev *mdev = priv->mdev;
1851
1852         en_dbg(IFDOWN, priv, "Close port called\n");
1853
1854         mutex_lock(&mdev->state_lock);
1855
1856         mlx4_en_stop_port(dev, 0);
1857         netif_carrier_off(dev);
1858
1859         mutex_unlock(&mdev->state_lock);
1860         return 0;
1861 }
1862
1863 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1864 {
1865         int i;
1866
1867 #ifdef CONFIG_RFS_ACCEL
1868         free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1869         priv->dev->rx_cpu_rmap = NULL;
1870 #endif
1871
1872         for (i = 0; i < priv->tx_ring_num; i++) {
1873                 if (priv->tx_ring && priv->tx_ring[i])
1874                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1875                 if (priv->tx_cq && priv->tx_cq[i])
1876                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1877         }
1878
1879         for (i = 0; i < priv->rx_ring_num; i++) {
1880                 if (priv->rx_ring[i])
1881                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1882                                 priv->prof->rx_ring_size, priv->stride);
1883                 if (priv->rx_cq[i])
1884                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1885         }
1886
1887         if (priv->base_tx_qpn) {
1888                 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1889                 priv->base_tx_qpn = 0;
1890         }
1891 }
1892
1893 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1894 {
1895         struct mlx4_en_port_profile *prof = priv->prof;
1896         int i;
1897         int err;
1898         int node;
1899
1900         err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn);
1901         if (err) {
1902                 en_err(priv, "failed reserving range for TX rings\n");
1903                 return err;
1904         }
1905
1906         /* Create tx Rings */
1907         for (i = 0; i < priv->tx_ring_num; i++) {
1908                 node = cpu_to_node(i % num_online_cpus());
1909                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1910                                       prof->tx_ring_size, i, TX, node))
1911                         goto err;
1912
1913                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], priv->base_tx_qpn + i,
1914                                            prof->tx_ring_size, TXBB_SIZE, node))
1915                         goto err;
1916         }
1917
1918         /* Create rx Rings */
1919         for (i = 0; i < priv->rx_ring_num; i++) {
1920                 node = cpu_to_node(i % num_online_cpus());
1921                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1922                                       prof->rx_ring_size, i, RX, node))
1923                         goto err;
1924
1925                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1926                                            prof->rx_ring_size, priv->stride,
1927                                            node))
1928                         goto err;
1929         }
1930
1931 #ifdef CONFIG_RFS_ACCEL
1932         if (priv->mdev->dev->caps.comp_pool) {
1933                 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
1934                 if (!priv->dev->rx_cpu_rmap)
1935                         goto err;
1936         }
1937 #endif
1938
1939         return 0;
1940
1941 err:
1942         en_err(priv, "Failed to allocate NIC resources\n");
1943         for (i = 0; i < priv->rx_ring_num; i++) {
1944                 if (priv->rx_ring[i])
1945                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1946                                                 prof->rx_ring_size,
1947                                                 priv->stride);
1948                 if (priv->rx_cq[i])
1949                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1950         }
1951         for (i = 0; i < priv->tx_ring_num; i++) {
1952                 if (priv->tx_ring[i])
1953                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1954                 if (priv->tx_cq[i])
1955                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1956         }
1957         return -ENOMEM;
1958 }
1959
1960
1961 void mlx4_en_destroy_netdev(struct net_device *dev)
1962 {
1963         struct mlx4_en_priv *priv = netdev_priv(dev);
1964         struct mlx4_en_dev *mdev = priv->mdev;
1965
1966         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1967
1968         /* Unregister device - this will close the port if it was up */
1969         if (priv->registered)
1970                 unregister_netdev(dev);
1971
1972         if (priv->allocated)
1973                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1974
1975         cancel_delayed_work(&priv->stats_task);
1976         cancel_delayed_work(&priv->service_task);
1977         /* flush any pending task for this netdev */
1978         flush_workqueue(mdev->workqueue);
1979
1980         /* Detach the netdev so tasks would not attempt to access it */
1981         mutex_lock(&mdev->state_lock);
1982         mdev->pndev[priv->port] = NULL;
1983         mutex_unlock(&mdev->state_lock);
1984
1985         mlx4_en_free_resources(priv);
1986
1987         kfree(priv->tx_ring);
1988         kfree(priv->tx_cq);
1989
1990         free_netdev(dev);
1991 }
1992
1993 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1994 {
1995         struct mlx4_en_priv *priv = netdev_priv(dev);
1996         struct mlx4_en_dev *mdev = priv->mdev;
1997         int err = 0;
1998
1999         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2000                  dev->mtu, new_mtu);
2001
2002         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2003                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2004                 return -EPERM;
2005         }
2006         dev->mtu = new_mtu;
2007
2008         if (netif_running(dev)) {
2009                 mutex_lock(&mdev->state_lock);
2010                 if (!mdev->device_up) {
2011                         /* NIC is probably restarting - let watchdog task reset
2012                          * the port */
2013                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2014                 } else {
2015                         mlx4_en_stop_port(dev, 1);
2016                         err = mlx4_en_start_port(dev);
2017                         if (err) {
2018                                 en_err(priv, "Failed restarting port:%d\n",
2019                                          priv->port);
2020                                 queue_work(mdev->workqueue, &priv->watchdog_task);
2021                         }
2022                 }
2023                 mutex_unlock(&mdev->state_lock);
2024         }
2025         return 0;
2026 }
2027
2028 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2029 {
2030         struct mlx4_en_priv *priv = netdev_priv(dev);
2031         struct mlx4_en_dev *mdev = priv->mdev;
2032         struct hwtstamp_config config;
2033
2034         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2035                 return -EFAULT;
2036
2037         /* reserved for future extensions */
2038         if (config.flags)
2039                 return -EINVAL;
2040
2041         /* device doesn't support time stamping */
2042         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2043                 return -EINVAL;
2044
2045         /* TX HW timestamp */
2046         switch (config.tx_type) {
2047         case HWTSTAMP_TX_OFF:
2048         case HWTSTAMP_TX_ON:
2049                 break;
2050         default:
2051                 return -ERANGE;
2052         }
2053
2054         /* RX HW timestamp */
2055         switch (config.rx_filter) {
2056         case HWTSTAMP_FILTER_NONE:
2057                 break;
2058         case HWTSTAMP_FILTER_ALL:
2059         case HWTSTAMP_FILTER_SOME:
2060         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2061         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2062         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2063         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2064         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2065         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2066         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2067         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2068         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2069         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2070         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2071         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2072                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2073                 break;
2074         default:
2075                 return -ERANGE;
2076         }
2077
2078         if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) {
2079                 config.tx_type = HWTSTAMP_TX_OFF;
2080                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2081         }
2082
2083         return copy_to_user(ifr->ifr_data, &config,
2084                             sizeof(config)) ? -EFAULT : 0;
2085 }
2086
2087 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2088 {
2089         struct mlx4_en_priv *priv = netdev_priv(dev);
2090
2091         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2092                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2093 }
2094
2095 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2096 {
2097         switch (cmd) {
2098         case SIOCSHWTSTAMP:
2099                 return mlx4_en_hwtstamp_set(dev, ifr);
2100         case SIOCGHWTSTAMP:
2101                 return mlx4_en_hwtstamp_get(dev, ifr);
2102         default:
2103                 return -EOPNOTSUPP;
2104         }
2105 }
2106
2107 static int mlx4_en_set_features(struct net_device *netdev,
2108                 netdev_features_t features)
2109 {
2110         struct mlx4_en_priv *priv = netdev_priv(netdev);
2111
2112         if (features & NETIF_F_LOOPBACK)
2113                 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2114         else
2115                 priv->ctrl_flags &=
2116                         cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2117
2118         mlx4_en_update_loopback_state(netdev, features);
2119
2120         return 0;
2121
2122 }
2123
2124 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2125 {
2126         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2127         struct mlx4_en_dev *mdev = en_priv->mdev;
2128         u64 mac_u64 = mlx4_en_mac_to_u64(mac);
2129
2130         if (!is_valid_ether_addr(mac))
2131                 return -EINVAL;
2132
2133         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2134 }
2135
2136 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2137 {
2138         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2139         struct mlx4_en_dev *mdev = en_priv->mdev;
2140
2141         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2142 }
2143
2144 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2145 {
2146         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2147         struct mlx4_en_dev *mdev = en_priv->mdev;
2148
2149         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2150 }
2151
2152 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2153 {
2154         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2155         struct mlx4_en_dev *mdev = en_priv->mdev;
2156
2157         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2158 }
2159
2160 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2161 {
2162         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2163         struct mlx4_en_dev *mdev = en_priv->mdev;
2164
2165         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2166 }
2167 static const struct net_device_ops mlx4_netdev_ops = {
2168         .ndo_open               = mlx4_en_open,
2169         .ndo_stop               = mlx4_en_close,
2170         .ndo_start_xmit         = mlx4_en_xmit,
2171         .ndo_select_queue       = mlx4_en_select_queue,
2172         .ndo_get_stats          = mlx4_en_get_stats,
2173         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2174         .ndo_set_mac_address    = mlx4_en_set_mac,
2175         .ndo_validate_addr      = eth_validate_addr,
2176         .ndo_change_mtu         = mlx4_en_change_mtu,
2177         .ndo_do_ioctl           = mlx4_en_ioctl,
2178         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2179         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2180         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2181 #ifdef CONFIG_NET_POLL_CONTROLLER
2182         .ndo_poll_controller    = mlx4_en_netpoll,
2183 #endif
2184         .ndo_set_features       = mlx4_en_set_features,
2185         .ndo_setup_tc           = mlx4_en_setup_tc,
2186 #ifdef CONFIG_RFS_ACCEL
2187         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2188 #endif
2189 #ifdef CONFIG_NET_RX_BUSY_POLL
2190         .ndo_busy_poll          = mlx4_en_low_latency_recv,
2191 #endif
2192 };
2193
2194 static const struct net_device_ops mlx4_netdev_ops_master = {
2195         .ndo_open               = mlx4_en_open,
2196         .ndo_stop               = mlx4_en_close,
2197         .ndo_start_xmit         = mlx4_en_xmit,
2198         .ndo_select_queue       = mlx4_en_select_queue,
2199         .ndo_get_stats          = mlx4_en_get_stats,
2200         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2201         .ndo_set_mac_address    = mlx4_en_set_mac,
2202         .ndo_validate_addr      = eth_validate_addr,
2203         .ndo_change_mtu         = mlx4_en_change_mtu,
2204         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2205         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2206         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2207         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2208         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2209         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2210         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2211         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2212 #ifdef CONFIG_NET_POLL_CONTROLLER
2213         .ndo_poll_controller    = mlx4_en_netpoll,
2214 #endif
2215         .ndo_set_features       = mlx4_en_set_features,
2216         .ndo_setup_tc           = mlx4_en_setup_tc,
2217 #ifdef CONFIG_RFS_ACCEL
2218         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2219 #endif
2220 };
2221
2222 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2223                         struct mlx4_en_port_profile *prof)
2224 {
2225         struct net_device *dev;
2226         struct mlx4_en_priv *priv;
2227         int i;
2228         int err;
2229         u64 mac_u64;
2230
2231         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2232                                  MAX_TX_RINGS, MAX_RX_RINGS);
2233         if (dev == NULL)
2234                 return -ENOMEM;
2235
2236         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2237         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2238
2239         SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2240         dev->dev_id =  port - 1;
2241
2242         /*
2243          * Initialize driver private data
2244          */
2245
2246         priv = netdev_priv(dev);
2247         memset(priv, 0, sizeof(struct mlx4_en_priv));
2248         priv->dev = dev;
2249         priv->mdev = mdev;
2250         priv->ddev = &mdev->pdev->dev;
2251         priv->prof = prof;
2252         priv->port = port;
2253         priv->port_up = false;
2254         priv->flags = prof->flags;
2255         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2256                         MLX4_WQE_CTRL_SOLICITED);
2257         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2258         priv->tx_ring_num = prof->tx_ring_num;
2259
2260         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2261                                 GFP_KERNEL);
2262         if (!priv->tx_ring) {
2263                 err = -ENOMEM;
2264                 goto out;
2265         }
2266         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2267                               GFP_KERNEL);
2268         if (!priv->tx_cq) {
2269                 err = -ENOMEM;
2270                 goto out;
2271         }
2272         priv->rx_ring_num = prof->rx_ring_num;
2273         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2274         priv->mac_index = -1;
2275         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2276         spin_lock_init(&priv->stats_lock);
2277         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2278         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2279         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2280         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2281         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2282 #ifdef CONFIG_MLX4_EN_DCB
2283         if (!mlx4_is_slave(priv->mdev->dev)) {
2284                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2285                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2286                 } else {
2287                         en_info(priv, "enabling only PFC DCB ops\n");
2288                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2289                 }
2290         }
2291 #endif
2292
2293         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2294                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2295
2296         /* Query for default mac and max mtu */
2297         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2298
2299         /* Set default MAC */
2300         dev->addr_len = ETH_ALEN;
2301         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2302         if (!is_valid_ether_addr(dev->dev_addr)) {
2303                 if (mlx4_is_slave(priv->mdev->dev)) {
2304                         eth_hw_addr_random(dev);
2305                         en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2306                         mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr);
2307                         mdev->dev->caps.def_mac[priv->port] = mac_u64;
2308                 } else {
2309                         en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2310                                priv->port, dev->dev_addr);
2311                         err = -EINVAL;
2312                         goto out;
2313                 }
2314         }
2315
2316         memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac));
2317
2318         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2319                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2320         err = mlx4_en_alloc_resources(priv);
2321         if (err)
2322                 goto out;
2323
2324 #ifdef CONFIG_RFS_ACCEL
2325         INIT_LIST_HEAD(&priv->filters);
2326         spin_lock_init(&priv->filters_lock);
2327 #endif
2328
2329         /* Initialize time stamping config */
2330         priv->hwtstamp_config.flags = 0;
2331         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2332         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2333
2334         /* Allocate page for receive rings */
2335         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2336                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2337         if (err) {
2338                 en_err(priv, "Failed to allocate page for rx qps\n");
2339                 goto out;
2340         }
2341         priv->allocated = 1;
2342
2343         /*
2344          * Initialize netdev entry points
2345          */
2346         if (mlx4_is_master(priv->mdev->dev))
2347                 dev->netdev_ops = &mlx4_netdev_ops_master;
2348         else
2349                 dev->netdev_ops = &mlx4_netdev_ops;
2350         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2351         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2352         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2353
2354         SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
2355
2356         /*
2357          * Set driver features
2358          */
2359         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2360         if (mdev->LSO_support)
2361                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2362
2363         dev->vlan_features = dev->hw_features;
2364
2365         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2366         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2367                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2368                         NETIF_F_HW_VLAN_CTAG_FILTER;
2369         dev->hw_features |= NETIF_F_LOOPBACK;
2370
2371         if (mdev->dev->caps.steering_mode ==
2372             MLX4_STEERING_MODE_DEVICE_MANAGED)
2373                 dev->hw_features |= NETIF_F_NTUPLE;
2374
2375         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2376                 dev->priv_flags |= IFF_UNICAST_FLT;
2377
2378         mdev->pndev[port] = dev;
2379
2380         netif_carrier_off(dev);
2381         mlx4_en_set_default_moderation(priv);
2382
2383         err = register_netdev(dev);
2384         if (err) {
2385                 en_err(priv, "Netdev registration failed for port %d\n", port);
2386                 goto out;
2387         }
2388         priv->registered = 1;
2389
2390         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2391         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2392
2393         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2394
2395         /* Configure port */
2396         mlx4_en_calc_rx_buf(dev);
2397         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2398                                     priv->rx_skb_size + ETH_FCS_LEN,
2399                                     prof->tx_pause, prof->tx_ppp,
2400                                     prof->rx_pause, prof->rx_ppp);
2401         if (err) {
2402                 en_err(priv, "Failed setting port general configurations "
2403                        "for port %d, with error %d\n", priv->port, err);
2404                 goto out;
2405         }
2406
2407         /* Init port */
2408         en_warn(priv, "Initializing port\n");
2409         err = mlx4_INIT_PORT(mdev->dev, priv->port);
2410         if (err) {
2411                 en_err(priv, "Failed Initializing port\n");
2412                 goto out;
2413         }
2414         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2415
2416         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2417                 queue_delayed_work(mdev->workqueue, &priv->service_task,
2418                                    SERVICE_TASK_DELAY);
2419
2420         return 0;
2421
2422 out:
2423         mlx4_en_destroy_netdev(dev);
2424         return err;
2425 }
2426