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         __be32 src_ip;
 106         __be32 dst_ip;
 107         __be16 src_port;
 108         __be16 dst_port;
 109
 110         int rxq_index;
 111         struct mlx4_en_priv *priv;
 112         u32 flow_id;                    /* RFS infrastructure id */
 113         int id;                         /* mlx4_en driver id */
 114         u64 reg_id;                     /* Flow steering API id */
 115         u8 activated;                   /* Used to prevent expiry before filter
 116                                          * is attached
 117                                          */
 118         struct hlist_node filter_chain;
 119 };
 120
 121 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 122
 123 static void mlx4_en_filter_work(struct work_struct *work)
 124 {
 125         struct mlx4_en_filter *filter = container_of(work,
 126                                                      struct mlx4_en_filter,
 127                                                      work);
 128         struct mlx4_en_priv *priv = filter->priv;
 129         struct mlx4_spec_list spec_tcp = {
 130                 .id = MLX4_NET_TRANS_RULE_ID_TCP,
 131                 {
 132                         .tcp_udp = {
 133                                 .dst_port = filter->dst_port,
 134                                 .dst_port_msk = (__force __be16)-1,
 135                                 .src_port = filter->src_port,
 136                                 .src_port_msk = (__force __be16)-1,
 137                         },
 138                 },
 139         };
 140         struct mlx4_spec_list spec_ip = {
 141                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 142                 {
 143                         .ipv4 = {
 144                                 .dst_ip = filter->dst_ip,
 145                                 .dst_ip_msk = (__force __be32)-1,
 146                                 .src_ip = filter->src_ip,
 147                                 .src_ip_msk = (__force __be32)-1,
 148                         },
 149                 },
 150         };
 151         struct mlx4_spec_list spec_eth = {
 152                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 153         };
 154         struct mlx4_net_trans_rule rule = {
 155                 .list = LIST_HEAD_INIT(rule.list),
 156                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 157                 .exclusive = 1,
 158                 .allow_loopback = 1,
 159                 .promisc_mode = MLX4_FS_REGULAR,
 160                 .port = priv->port,
 161                 .priority = MLX4_DOMAIN_RFS,
 162         };
 163         int rc;
 164         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 165
 166         list_add_tail(&spec_eth.list, &rule.list);
 167         list_add_tail(&spec_ip.list, &rule.list);
 168         list_add_tail(&spec_tcp.list, &rule.list);
 169
 170         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 171         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 172         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 173
 174         filter->activated = 0;
 175
 176         if (filter->reg_id) {
 177                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 178                 if (rc && rc != -ENOENT)
 179                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 180         }
 181
 182         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 183         if (rc)
 184                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 185
 186         mlx4_en_filter_rfs_expire(priv);
 187
 188         filter->activated = 1;
 189 }
 190
 191 static inline struct hlist_head *
 192 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 193                    __be16 src_port, __be16 dst_port)
 194 {
 195         unsigned long l;
 196         int bucket_idx;
 197
 198         l = (__force unsigned long)src_port |
 199             ((__force unsigned long)dst_port << 2);
 200         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 201
 202         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 203
 204         return &priv->filter_hash[bucket_idx];
 205 }
 206
 207 static struct mlx4_en_filter *
 208 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 209                      __be32 dst_ip, __be16 src_port, __be16 dst_port,
 210                      u32 flow_id)
 211 {
 212         struct mlx4_en_filter *filter = NULL;
 213
 214         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 215         if (!filter)
 216                 return NULL;
 217
 218         filter->priv = priv;
 219         filter->rxq_index = rxq_index;
 220         INIT_WORK(&filter->work, mlx4_en_filter_work);
 221
 222         filter->src_ip = src_ip;
 223         filter->dst_ip = dst_ip;
 224         filter->src_port = src_port;
 225         filter->dst_port = dst_port;
 226
 227         filter->flow_id = flow_id;
 228
 229         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 230
 231         list_add_tail(&filter->next, &priv->filters);
 232         hlist_add_head(&filter->filter_chain,
 233                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 234                                           dst_port));
 235
 236         return filter;
 237 }
 238
 239 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 240 {
 241         struct mlx4_en_priv *priv = filter->priv;
 242         int rc;
 243
 244         list_del(&filter->next);
 245
 246         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 247         if (rc && rc != -ENOENT)
 248                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 249
 250         kfree(filter);
 251 }
 252
 253 static inline struct mlx4_en_filter *
 254 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 255                     __be16 src_port, __be16 dst_port)
 256 {
 257         struct mlx4_en_filter *filter;
 258         struct mlx4_en_filter *ret = NULL;
 259
 260         hlist_for_each_entry(filter,
 261                              filter_hash_bucket(priv, src_ip, dst_ip,
 262                                                 src_port, dst_port),
 263                              filter_chain) {
 264                 if (filter->src_ip == src_ip &&
 265                     filter->dst_ip == dst_ip &&
 266                     filter->src_port == src_port &&
 267                     filter->dst_port == dst_port) {
 268                         ret = filter;
 269                         break;
 270                 }
 271         }
 272
 273         return ret;
 274 }
 275
 276 static int
 277 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 278                    u16 rxq_index, u32 flow_id)
 279 {
 280         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 281         struct mlx4_en_filter *filter;
 282         const struct iphdr *ip;
 283         const __be16 *ports;
 284         __be32 src_ip;
 285         __be32 dst_ip;
 286         __be16 src_port;
 287         __be16 dst_port;
 288         int nhoff = skb_network_offset(skb);
 289         int ret = 0;
 290
 291         if (skb->protocol != htons(ETH_P_IP))
 292                 return -EPROTONOSUPPORT;
 293
 294         ip = (const struct iphdr *)(skb->data + nhoff);
 295         if (ip_is_fragment(ip))
 296                 return -EPROTONOSUPPORT;
 297
 298         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 299
 300         src_ip = ip->saddr;
 301         dst_ip = ip->daddr;
 302         src_port = ports[0];
 303         dst_port = ports[1];
 304
 305         if (ip->protocol != IPPROTO_TCP)
 306                 return -EPROTONOSUPPORT;
 307
 308         spin_lock_bh(&priv->filters_lock);
 309         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, src_port, dst_port);
 310         if (filter) {
 311                 if (filter->rxq_index == rxq_index)
 312                         goto out;
 313
 314                 filter->rxq_index = rxq_index;
 315         } else {
 316                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 317                                               src_ip, dst_ip,
 318                                               src_port, dst_port, flow_id);
 319                 if (!filter) {
 320                         ret = -ENOMEM;
 321                         goto err;
 322                 }
 323         }
 324
 325         queue_work(priv->mdev->workqueue, &filter->work);
 326
 327 out:
 328         ret = filter->id;
 329 err:
 330         spin_unlock_bh(&priv->filters_lock);
 331
 332         return ret;
 333 }
 334
 335 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv,
 336                              struct mlx4_en_rx_ring *rx_ring)
 337 {
 338         struct mlx4_en_filter *filter, *tmp;
 339         LIST_HEAD(del_list);
 340
 341         spin_lock_bh(&priv->filters_lock);
 342         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 343                 list_move(&filter->next, &del_list);
 344                 hlist_del(&filter->filter_chain);
 345         }
 346         spin_unlock_bh(&priv->filters_lock);
 347
 348         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 349                 cancel_work_sync(&filter->work);
 350                 mlx4_en_filter_free(filter);
 351         }
 352 }
 353
 354 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 355 {
 356         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 357         LIST_HEAD(del_list);
 358         int i = 0;
 359
 360         spin_lock_bh(&priv->filters_lock);
 361         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 362                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 363                         break;
 364
 365                 if (filter->activated &&
 366                     !work_pending(&filter->work) &&
 367                     rps_may_expire_flow(priv->dev,
 368                                         filter->rxq_index, filter->flow_id,
 369                                         filter->id)) {
 370                         list_move(&filter->next, &del_list);
 371                         hlist_del(&filter->filter_chain);
 372                 } else
 373                         last_filter = filter;
 374
 375                 i++;
 376         }
 377
 378         if (last_filter && (&last_filter->next != priv->filters.next))
 379                 list_move(&priv->filters, &last_filter->next);
 380
 381         spin_unlock_bh(&priv->filters_lock);
 382
 383         list_for_each_entry_safe(filter, tmp, &del_list, next)
 384                 mlx4_en_filter_free(filter);
 385 }
 386 #endif
 387
 388 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 389                                    __be16 proto, u16 vid)
 390 {
 391         struct mlx4_en_priv *priv = netdev_priv(dev);
 392         struct mlx4_en_dev *mdev = priv->mdev;
 393         int err;
 394         int idx;
 395
 396         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 397
 398         set_bit(vid, priv->active_vlans);
 399
 400         /* Add VID to port VLAN filter */
 401         mutex_lock(&mdev->state_lock);
 402         if (mdev->device_up && priv->port_up) {
 403                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 404                 if (err)
 405                         en_err(priv, "Failed configuring VLAN filter\n");
 406         }
 407         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 408                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 409         mutex_unlock(&mdev->state_lock);
 410
 411         return 0;
 412 }
 413
 414 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 415                                     __be16 proto, u16 vid)
 416 {
 417         struct mlx4_en_priv *priv = netdev_priv(dev);
 418         struct mlx4_en_dev *mdev = priv->mdev;
 419         int err;
 420
 421         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 422
 423         clear_bit(vid, priv->active_vlans);
 424
 425         /* Remove VID from port VLAN filter */
 426         mutex_lock(&mdev->state_lock);
 427         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 428
 429         if (mdev->device_up && priv->port_up) {
 430                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 431                 if (err)
 432                         en_err(priv, "Failed configuring VLAN filter\n");
 433         }
 434         mutex_unlock(&mdev->state_lock);
 435
 436         return 0;
 437 }
 438
 439 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 440 {
 441         int i;
 442         for (i = ETH_ALEN - 1; i >= 0; --i) {
 443                 dst_mac[i] = src_mac & 0xff;
 444                 src_mac >>= 8;
 445         }
 446         memset(&dst_mac[ETH_ALEN], 0, 2);
 447 }
 448
 449 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 450                                 unsigned char *mac, int *qpn, u64 *reg_id)
 451 {
 452         struct mlx4_en_dev *mdev = priv->mdev;
 453         struct mlx4_dev *dev = mdev->dev;
 454         int err;
 455
 456         switch (dev->caps.steering_mode) {
 457         case MLX4_STEERING_MODE_B0: {
 458                 struct mlx4_qp qp;
 459                 u8 gid[16] = {0};
 460
 461                 qp.qpn = *qpn;
 462                 memcpy(&gid[10], mac, ETH_ALEN);
 463                 gid[5] = priv->port;
 464
 465                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 466                 break;
 467         }
 468         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 469                 struct mlx4_spec_list spec_eth = { {NULL} };
 470                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 471
 472                 struct mlx4_net_trans_rule rule = {
 473                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 474                         .exclusive = 0,
 475                         .allow_loopback = 1,
 476                         .promisc_mode = MLX4_FS_REGULAR,
 477                         .priority = MLX4_DOMAIN_NIC,
 478                 };
 479
 480                 rule.port = priv->port;
 481                 rule.qpn = *qpn;
 482                 INIT_LIST_HEAD(&rule.list);
 483
 484                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 485                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 486                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 487                 list_add_tail(&spec_eth.list, &rule.list);
 488
 489                 err = mlx4_flow_attach(dev, &rule, reg_id);
 490                 break;
 491         }
 492         default:
 493                 return -EINVAL;
 494         }
 495         if (err)
 496                 en_warn(priv, "Failed Attaching Unicast\n");
 497
 498         return err;
 499 }
 500
 501 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 502                                      unsigned char *mac, int qpn, u64 reg_id)
 503 {
 504         struct mlx4_en_dev *mdev = priv->mdev;
 505         struct mlx4_dev *dev = mdev->dev;
 506
 507         switch (dev->caps.steering_mode) {
 508         case MLX4_STEERING_MODE_B0: {
 509                 struct mlx4_qp qp;
 510                 u8 gid[16] = {0};
 511
 512                 qp.qpn = qpn;
 513                 memcpy(&gid[10], mac, ETH_ALEN);
 514                 gid[5] = priv->port;
 515
 516                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 517                 break;
 518         }
 519         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 520                 mlx4_flow_detach(dev, reg_id);
 521                 break;
 522         }
 523         default:
 524                 en_err(priv, "Invalid steering mode.\n");
 525         }
 526 }
 527
 528 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 529 {
 530         struct mlx4_en_dev *mdev = priv->mdev;
 531         struct mlx4_dev *dev = mdev->dev;
 532         struct mlx4_mac_entry *entry;
 533         int index = 0;
 534         int err = 0;
 535         u64 reg_id;
 536         int *qpn = &priv->base_qpn;
 537         u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
 538
 539         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 540                priv->dev->dev_addr);
 541         index = mlx4_register_mac(dev, priv->port, mac);
 542         if (index < 0) {
 543                 err = index;
 544                 en_err(priv, "Failed adding MAC: %pM\n",
 545                        priv->dev->dev_addr);
 546                 return err;
 547         }
 548
 549         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 550                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 551                 *qpn = base_qpn + index;
 552                 return 0;
 553         }
 554
 555         err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
 556         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 557         if (err) {
 558                 en_err(priv, "Failed to reserve qp for mac registration\n");
 559                 goto qp_err;
 560         }
 561
 562         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
 563         if (err)
 564                 goto steer_err;
 565
 566         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
 567         if (!entry) {
 568                 err = -ENOMEM;
 569                 goto alloc_err;
 570         }
 571         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
 572         entry->reg_id = reg_id;
 573
 574         hlist_add_head_rcu(&entry->hlist,
 575                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
 576
 577         return 0;
 578
 579 alloc_err:
 580         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
 581
 582 steer_err:
 583         mlx4_qp_release_range(dev, *qpn, 1);
 584
 585 qp_err:
 586         mlx4_unregister_mac(dev, priv->port, mac);
 587         return err;
 588 }
 589
 590 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 591 {
 592         struct mlx4_en_dev *mdev = priv->mdev;
 593         struct mlx4_dev *dev = mdev->dev;
 594         int qpn = priv->base_qpn;
 595         u64 mac;
 596
 597         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 598                 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
 599                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 600                        priv->dev->dev_addr);
 601                 mlx4_unregister_mac(dev, priv->port, mac);
 602         } else {
 603                 struct mlx4_mac_entry *entry;
 604                 struct hlist_node *tmp;
 605                 struct hlist_head *bucket;
 606                 unsigned int i;
 607
 608                 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
 609                         bucket = &priv->mac_hash[i];
 610                         hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 611                                 mac = mlx4_en_mac_to_u64(entry->mac);
 612                                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 613                                        entry->mac);
 614                                 mlx4_en_uc_steer_release(priv, entry->mac,
 615                                                          qpn, entry->reg_id);
 616
 617                                 mlx4_unregister_mac(dev, priv->port, mac);
 618                                 hlist_del_rcu(&entry->hlist);
 619                                 kfree_rcu(entry, rcu);
 620                         }
 621                 }
 622
 623                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 624                        priv->port, qpn);
 625                 mlx4_qp_release_range(dev, qpn, 1);
 626                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 627         }
 628 }
 629
 630 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 631                                unsigned char *new_mac, unsigned char *prev_mac)
 632 {
 633         struct mlx4_en_dev *mdev = priv->mdev;
 634         struct mlx4_dev *dev = mdev->dev;
 635         int err = 0;
 636         u64 new_mac_u64 = mlx4_en_mac_to_u64(new_mac);
 637
 638         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 639                 struct hlist_head *bucket;
 640                 unsigned int mac_hash;
 641                 struct mlx4_mac_entry *entry;
 642                 struct hlist_node *tmp;
 643                 u64 prev_mac_u64 = mlx4_en_mac_to_u64(prev_mac);
 644
 645                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 646                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 647                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 648                                 mlx4_en_uc_steer_release(priv, entry->mac,
 649                                                          qpn, entry->reg_id);
 650                                 mlx4_unregister_mac(dev, priv->port,
 651                                                     prev_mac_u64);
 652                                 hlist_del_rcu(&entry->hlist);
 653                                 synchronize_rcu();
 654                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 655                                 entry->reg_id = 0;
 656                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 657                                 hlist_add_head_rcu(&entry->hlist,
 658                                                    &priv->mac_hash[mac_hash]);
 659                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 660                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 661                                                            &qpn,
 662                                                            &entry->reg_id);
 663                                 return err;
 664                         }
 665                 }
 666                 return -EINVAL;
 667         }
 668
 669         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 670 }
 671
 672 u64 mlx4_en_mac_to_u64(u8 *addr)
 673 {
 674         u64 mac = 0;
 675         int i;
 676
 677         for (i = 0; i < ETH_ALEN; i++) {
 678                 mac <<= 8;
 679                 mac |= addr[i];
 680         }
 681         return mac;
 682 }
 683
 684 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv)
 685 {
 686         int err = 0;
 687
 688         if (priv->port_up) {
 689                 /* Remove old MAC and insert the new one */
 690                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 691                                           priv->dev->dev_addr, priv->prev_mac);
 692                 if (err)
 693                         en_err(priv, "Failed changing HW MAC address\n");
 694                 memcpy(priv->prev_mac, priv->dev->dev_addr,
 695                        sizeof(priv->prev_mac));
 696         } else
 697                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 698
 699         return err;
 700 }
 701
 702 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 703 {
 704         struct mlx4_en_priv *priv = netdev_priv(dev);
 705         struct mlx4_en_dev *mdev = priv->mdev;
 706         struct sockaddr *saddr = addr;
 707         int err;
 708
 709         if (!is_valid_ether_addr(saddr->sa_data))
 710                 return -EADDRNOTAVAIL;
 711
 712         memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 713
 714         mutex_lock(&mdev->state_lock);
 715         err = mlx4_en_do_set_mac(priv);
 716         mutex_unlock(&mdev->state_lock);
 717
 718         return err;
 719 }
 720
 721 static void mlx4_en_clear_list(struct net_device *dev)
 722 {
 723         struct mlx4_en_priv *priv = netdev_priv(dev);
 724         struct mlx4_en_mc_list *tmp, *mc_to_del;
 725
 726         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 727                 list_del(&mc_to_del->list);
 728                 kfree(mc_to_del);
 729         }
 730 }
 731
 732 static void mlx4_en_cache_mclist(struct net_device *dev)
 733 {
 734         struct mlx4_en_priv *priv = netdev_priv(dev);
 735         struct netdev_hw_addr *ha;
 736         struct mlx4_en_mc_list *tmp;
 737
 738         mlx4_en_clear_list(dev);
 739         netdev_for_each_mc_addr(ha, dev) {
 740                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 741                 if (!tmp) {
 742                         mlx4_en_clear_list(dev);
 743                         return;
 744                 }
 745                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 746                 list_add_tail(&tmp->list, &priv->mc_list);
 747         }
 748 }
 749
 750 static void update_mclist_flags(struct mlx4_en_priv *priv,
 751                                 struct list_head *dst,
 752                                 struct list_head *src)
 753 {
 754         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 755         bool found;
 756
 757         /* Find all the entries that should be removed from dst,
 758          * These are the entries that are not found in src
 759          */
 760         list_for_each_entry(dst_tmp, dst, list) {
 761                 found = false;
 762                 list_for_each_entry(src_tmp, src, list) {
 763                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 764                                 found = true;
 765                                 break;
 766                         }
 767                 }
 768                 if (!found)
 769                         dst_tmp->action = MCLIST_REM;
 770         }
 771
 772         /* Add entries that exist in src but not in dst
 773          * mark them as need to add
 774          */
 775         list_for_each_entry(src_tmp, src, list) {
 776                 found = false;
 777                 list_for_each_entry(dst_tmp, dst, list) {
 778                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 779                                 dst_tmp->action = MCLIST_NONE;
 780                                 found = true;
 781                                 break;
 782                         }
 783                 }
 784                 if (!found) {
 785                         new_mc = kmemdup(src_tmp,
 786                                          sizeof(struct mlx4_en_mc_list),
 787                                          GFP_KERNEL);
 788                         if (!new_mc)
 789                                 return;
 790
 791                         new_mc->action = MCLIST_ADD;
 792                         list_add_tail(&new_mc->list, dst);
 793                 }
 794         }
 795 }
 796
 797 static void mlx4_en_set_rx_mode(struct net_device *dev)
 798 {
 799         struct mlx4_en_priv *priv = netdev_priv(dev);
 800
 801         if (!priv->port_up)
 802                 return;
 803
 804         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 805 }
 806
 807 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 808                                      struct mlx4_en_dev *mdev)
 809 {
 810         int err = 0;
 811
 812         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 813                 if (netif_msg_rx_status(priv))
 814                         en_warn(priv, "Entering promiscuous mode\n");
 815                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 816
 817                 /* Enable promiscouos mode */
 818                 switch (mdev->dev->caps.steering_mode) {
 819                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 820                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 821                                                           priv->port,
 822                                                           priv->base_qpn,
 823                                                           MLX4_FS_ALL_DEFAULT);
 824                         if (err)
 825                                 en_err(priv, "Failed enabling promiscuous mode\n");
 826                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 827                         break;
 828
 829                 case MLX4_STEERING_MODE_B0:
 830                         err = mlx4_unicast_promisc_add(mdev->dev,
 831                                                        priv->base_qpn,
 832                                                        priv->port);
 833                         if (err)
 834                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 835
 836                         /* Add the default qp number as multicast
 837                          * promisc
 838                          */
 839                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 840                                 err = mlx4_multicast_promisc_add(mdev->dev,
 841                                                                  priv->base_qpn,
 842                                                                  priv->port);
 843                                 if (err)
 844                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 845                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 846                         }
 847                         break;
 848
 849                 case MLX4_STEERING_MODE_A0:
 850                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 851                                                      priv->port,
 852                                                      priv->base_qpn,
 853                                                      1);
 854                         if (err)
 855                                 en_err(priv, "Failed enabling promiscuous mode\n");
 856                         break;
 857                 }
 858
 859                 /* Disable port multicast filter (unconditionally) */
 860                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 861                                           0, MLX4_MCAST_DISABLE);
 862                 if (err)
 863                         en_err(priv, "Failed disabling multicast filter\n");
 864
 865                 /* Disable port VLAN filter */
 866                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 867                 if (err)
 868                         en_err(priv, "Failed disabling VLAN filter\n");
 869         }
 870 }
 871
 872 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 873                                        struct mlx4_en_dev *mdev)
 874 {
 875         int err = 0;
 876
 877         if (netif_msg_rx_status(priv))
 878                 en_warn(priv, "Leaving promiscuous mode\n");
 879         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 880
 881         /* Disable promiscouos mode */
 882         switch (mdev->dev->caps.steering_mode) {
 883         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 884                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 885                                                      priv->port,
 886                                                      MLX4_FS_ALL_DEFAULT);
 887                 if (err)
 888                         en_err(priv, "Failed disabling promiscuous mode\n");
 889                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 890                 break;
 891
 892         case MLX4_STEERING_MODE_B0:
 893                 err = mlx4_unicast_promisc_remove(mdev->dev,
 894                                                   priv->base_qpn,
 895                                                   priv->port);
 896                 if (err)
 897                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 898                 /* Disable Multicast promisc */
 899                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 900                         err = mlx4_multicast_promisc_remove(mdev->dev,
 901                                                             priv->base_qpn,
 902                                                             priv->port);
 903                         if (err)
 904                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 905                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 906                 }
 907                 break;
 908
 909         case MLX4_STEERING_MODE_A0:
 910                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 911                                              priv->port,
 912                                              priv->base_qpn, 0);
 913                 if (err)
 914                         en_err(priv, "Failed disabling promiscuous mode\n");
 915                 break;
 916         }
 917
 918         /* Enable port VLAN filter */
 919         err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 920         if (err)
 921                 en_err(priv, "Failed enabling VLAN filter\n");
 922 }
 923
 924 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 925                                  struct net_device *dev,
 926                                  struct mlx4_en_dev *mdev)
 927 {
 928         struct mlx4_en_mc_list *mclist, *tmp;
 929         u64 mcast_addr = 0;
 930         u8 mc_list[16] = {0};
 931         int err = 0;
 932
 933         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 934         if (dev->flags & IFF_ALLMULTI) {
 935                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 936                                           0, MLX4_MCAST_DISABLE);
 937                 if (err)
 938                         en_err(priv, "Failed disabling multicast filter\n");
 939
 940                 /* Add the default qp number as multicast promisc */
 941                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 942                         switch (mdev->dev->caps.steering_mode) {
 943                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 944                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 945                                                                   priv->port,
 946                                                                   priv->base_qpn,
 947                                                                   MLX4_FS_MC_DEFAULT);
 948                                 break;
 949
 950                         case MLX4_STEERING_MODE_B0:
 951                                 err = mlx4_multicast_promisc_add(mdev->dev,
 952                                                                  priv->base_qpn,
 953                                                                  priv->port);
 954                                 break;
 955
 956                         case MLX4_STEERING_MODE_A0:
 957                                 break;
 958                         }
 959                         if (err)
 960                                 en_err(priv, "Failed entering multicast promisc mode\n");
 961                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 962                 }
 963         } else {
 964                 /* Disable Multicast promisc */
 965                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 966                         switch (mdev->dev->caps.steering_mode) {
 967                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 968                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 969                                                                      priv->port,
 970                                                                      MLX4_FS_MC_DEFAULT);
 971                                 break;
 972
 973                         case MLX4_STEERING_MODE_B0:
 974                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 975                                                                     priv->base_qpn,
 976                                                                     priv->port);
 977                                 break;
 978
 979                         case MLX4_STEERING_MODE_A0:
 980                                 break;
 981                         }
 982                         if (err)
 983                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 984                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 985                 }
 986
 987                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 988                                           0, MLX4_MCAST_DISABLE);
 989                 if (err)
 990                         en_err(priv, "Failed disabling multicast filter\n");
 991
 992                 /* Flush mcast filter and init it with broadcast address */
 993                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 994                                     1, MLX4_MCAST_CONFIG);
 995
 996                 /* Update multicast list - we cache all addresses so they won't
 997                  * change while HW is updated holding the command semaphor */
 998                 netif_addr_lock_bh(dev);
 999                 mlx4_en_cache_mclist(dev);
1000                 netif_addr_unlock_bh(dev);
1001                 list_for_each_entry(mclist, &priv->mc_list, list) {
1002                         mcast_addr = mlx4_en_mac_to_u64(mclist->addr);
1003                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1004                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
1005                 }
1006                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1007                                           0, MLX4_MCAST_ENABLE);
1008                 if (err)
1009                         en_err(priv, "Failed enabling multicast filter\n");
1010
1011                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1012                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1013                         if (mclist->action == MCLIST_REM) {
1014                                 /* detach this address and delete from list */
1015                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1016                                 mc_list[5] = priv->port;
1017                                 err = mlx4_multicast_detach(mdev->dev,
1018                                                             &priv->rss_map.indir_qp,
1019                                                             mc_list,
1020                                                             MLX4_PROT_ETH,
1021                                                             mclist->reg_id);
1022                                 if (err)
1023                                         en_err(priv, "Fail to detach multicast address\n");
1024
1025                                 /* remove from list */
1026                                 list_del(&mclist->list);
1027                                 kfree(mclist);
1028                         } else if (mclist->action == MCLIST_ADD) {
1029                                 /* attach the address */
1030                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1031                                 /* needed for B0 steering support */
1032                                 mc_list[5] = priv->port;
1033                                 err = mlx4_multicast_attach(mdev->dev,
1034                                                             &priv->rss_map.indir_qp,
1035                                                             mc_list,
1036                                                             priv->port, 0,
1037                                                             MLX4_PROT_ETH,
1038                                                             &mclist->reg_id);
1039                                 if (err)
1040                                         en_err(priv, "Fail to attach multicast address\n");
1041
1042                         }
1043                 }
1044         }
1045 }
1046
1047 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1048                                  struct net_device *dev,
1049                                  struct mlx4_en_dev *mdev)
1050 {
1051         struct netdev_hw_addr *ha;
1052         struct mlx4_mac_entry *entry;
1053         struct hlist_node *tmp;
1054         bool found;
1055         u64 mac;
1056         int err = 0;
1057         struct hlist_head *bucket;
1058         unsigned int i;
1059         int removed = 0;
1060         u32 prev_flags;
1061
1062         /* Note that we do not need to protect our mac_hash traversal with rcu,
1063          * since all modification code is protected by mdev->state_lock
1064          */
1065
1066         /* find what to remove */
1067         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1068                 bucket = &priv->mac_hash[i];
1069                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1070                         found = false;
1071                         netdev_for_each_uc_addr(ha, dev) {
1072                                 if (ether_addr_equal_64bits(entry->mac,
1073                                                             ha->addr)) {
1074                                         found = true;
1075                                         break;
1076                                 }
1077                         }
1078
1079                         /* MAC address of the port is not in uc list */
1080                         if (ether_addr_equal_64bits(entry->mac, dev->dev_addr))
1081                                 found = true;
1082
1083                         if (!found) {
1084                                 mac = mlx4_en_mac_to_u64(entry->mac);
1085                                 mlx4_en_uc_steer_release(priv, entry->mac,
1086                                                          priv->base_qpn,
1087                                                          entry->reg_id);
1088                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1089
1090                                 hlist_del_rcu(&entry->hlist);
1091                                 kfree_rcu(entry, rcu);
1092                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1093                                        entry->mac, priv->port);
1094                                 ++removed;
1095                         }
1096                 }
1097         }
1098
1099         /* if we didn't remove anything, there is no use in trying to add
1100          * again once we are in a forced promisc mode state
1101          */
1102         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1103                 return;
1104
1105         prev_flags = priv->flags;
1106         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1107
1108         /* find what to add */
1109         netdev_for_each_uc_addr(ha, dev) {
1110                 found = false;
1111                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1112                 hlist_for_each_entry(entry, bucket, hlist) {
1113                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1114                                 found = true;
1115                                 break;
1116                         }
1117                 }
1118
1119                 if (!found) {
1120                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1121                         if (!entry) {
1122                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1123                                        ha->addr, priv->port);
1124                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1125                                 break;
1126                         }
1127                         mac = mlx4_en_mac_to_u64(ha->addr);
1128                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1129                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1130                         if (err < 0) {
1131                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1132                                        ha->addr, priv->port, err);
1133                                 kfree(entry);
1134                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1135                                 break;
1136                         }
1137                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1138                                                    &priv->base_qpn,
1139                                                    &entry->reg_id);
1140                         if (err) {
1141                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1142                                        ha->addr, priv->port, err);
1143                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1144                                 kfree(entry);
1145                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1146                                 break;
1147                         } else {
1148                                 unsigned int mac_hash;
1149                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1150                                        ha->addr, priv->port);
1151                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1152                                 bucket = &priv->mac_hash[mac_hash];
1153                                 hlist_add_head_rcu(&entry->hlist, bucket);
1154                         }
1155                 }
1156         }
1157
1158         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1159                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1160                         priv->port);
1161         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1162                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1163                         priv->port);
1164         }
1165 }
1166
1167 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1168 {
1169         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1170                                                  rx_mode_task);
1171         struct mlx4_en_dev *mdev = priv->mdev;
1172         struct net_device *dev = priv->dev;
1173
1174         mutex_lock(&mdev->state_lock);
1175         if (!mdev->device_up) {
1176                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1177                 goto out;
1178         }
1179         if (!priv->port_up) {
1180                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1181                 goto out;
1182         }
1183
1184         if (!netif_carrier_ok(dev)) {
1185                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1186                         if (priv->port_state.link_state) {
1187                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1188                                 netif_carrier_on(dev);
1189                                 en_dbg(LINK, priv, "Link Up\n");
1190                         }
1191                 }
1192         }
1193
1194         if (dev->priv_flags & IFF_UNICAST_FLT)
1195                 mlx4_en_do_uc_filter(priv, dev, mdev);
1196
1197         /* Promsicuous mode: disable all filters */
1198         if ((dev->flags & IFF_PROMISC) ||
1199             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1200                 mlx4_en_set_promisc_mode(priv, mdev);
1201                 goto out;
1202         }
1203
1204         /* Not in promiscuous mode */
1205         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1206                 mlx4_en_clear_promisc_mode(priv, mdev);
1207
1208         mlx4_en_do_multicast(priv, dev, mdev);
1209 out:
1210         mutex_unlock(&mdev->state_lock);
1211 }
1212
1213 #ifdef CONFIG_NET_POLL_CONTROLLER
1214 static void mlx4_en_netpoll(struct net_device *dev)
1215 {
1216         struct mlx4_en_priv *priv = netdev_priv(dev);
1217         struct mlx4_en_cq *cq;
1218         unsigned long flags;
1219         int i;
1220
1221         for (i = 0; i < priv->rx_ring_num; i++) {
1222                 cq = &priv->rx_cq[i];
1223                 spin_lock_irqsave(&cq->lock, flags);
1224                 napi_synchronize(&cq->napi);
1225                 mlx4_en_process_rx_cq(dev, cq, 0);
1226                 spin_unlock_irqrestore(&cq->lock, flags);
1227         }
1228 }
1229 #endif
1230
1231 static void mlx4_en_tx_timeout(struct net_device *dev)
1232 {
1233         struct mlx4_en_priv *priv = netdev_priv(dev);
1234         struct mlx4_en_dev *mdev = priv->mdev;
1235         int i;
1236
1237         if (netif_msg_timer(priv))
1238                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1239
1240         for (i = 0; i < priv->tx_ring_num; i++) {
1241                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1242                         continue;
1243                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1244                         i, priv->tx_ring[i].qpn, priv->tx_ring[i].cqn,
1245                         priv->tx_ring[i].cons, priv->tx_ring[i].prod);
1246         }
1247
1248         priv->port_stats.tx_timeout++;
1249         en_dbg(DRV, priv, "Scheduling watchdog\n");
1250         queue_work(mdev->workqueue, &priv->watchdog_task);
1251 }
1252
1253
1254 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1255 {
1256         struct mlx4_en_priv *priv = netdev_priv(dev);
1257
1258         spin_lock_bh(&priv->stats_lock);
1259         memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1260         spin_unlock_bh(&priv->stats_lock);
1261
1262         return &priv->ret_stats;
1263 }
1264
1265 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1266 {
1267         struct mlx4_en_cq *cq;
1268         int i;
1269
1270         /* If we haven't received a specific coalescing setting
1271          * (module param), we set the moderation parameters as follows:
1272          * - moder_cnt is set to the number of mtu sized packets to
1273          *   satisfy our coalescing target.
1274          * - moder_time is set to a fixed value.
1275          */
1276         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1277         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1278         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1279         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1280         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1281                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1282
1283         /* Setup cq moderation params */
1284         for (i = 0; i < priv->rx_ring_num; i++) {
1285                 cq = &priv->rx_cq[i];
1286                 cq->moder_cnt = priv->rx_frames;
1287                 cq->moder_time = priv->rx_usecs;
1288                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1289                 priv->last_moder_packets[i] = 0;
1290                 priv->last_moder_bytes[i] = 0;
1291         }
1292
1293         for (i = 0; i < priv->tx_ring_num; i++) {
1294                 cq = &priv->tx_cq[i];
1295                 cq->moder_cnt = priv->tx_frames;
1296                 cq->moder_time = priv->tx_usecs;
1297         }
1298
1299         /* Reset auto-moderation params */
1300         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1301         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1302         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1303         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1304         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1305         priv->adaptive_rx_coal = 1;
1306         priv->last_moder_jiffies = 0;
1307         priv->last_moder_tx_packets = 0;
1308 }
1309
1310 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1311 {
1312         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1313         struct mlx4_en_cq *cq;
1314         unsigned long packets;
1315         unsigned long rate;
1316         unsigned long avg_pkt_size;
1317         unsigned long rx_packets;
1318         unsigned long rx_bytes;
1319         unsigned long rx_pkt_diff;
1320         int moder_time;
1321         int ring, err;
1322
1323         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1324                 return;
1325
1326         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1327                 spin_lock_bh(&priv->stats_lock);
1328                 rx_packets = priv->rx_ring[ring].packets;
1329                 rx_bytes = priv->rx_ring[ring].bytes;
1330                 spin_unlock_bh(&priv->stats_lock);
1331
1332                 rx_pkt_diff = ((unsigned long) (rx_packets -
1333                                 priv->last_moder_packets[ring]));
1334                 packets = rx_pkt_diff;
1335                 rate = packets * HZ / period;
1336                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1337                                 priv->last_moder_bytes[ring])) / packets : 0;
1338
1339                 /* Apply auto-moderation only when packet rate
1340                  * exceeds a rate that it matters */
1341                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1342                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1343                         if (rate < priv->pkt_rate_low)
1344                                 moder_time = priv->rx_usecs_low;
1345                         else if (rate > priv->pkt_rate_high)
1346                                 moder_time = priv->rx_usecs_high;
1347                         else
1348                                 moder_time = (rate - priv->pkt_rate_low) *
1349                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1350                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1351                                         priv->rx_usecs_low;
1352                 } else {
1353                         moder_time = priv->rx_usecs_low;
1354                 }
1355
1356                 if (moder_time != priv->last_moder_time[ring]) {
1357                         priv->last_moder_time[ring] = moder_time;
1358                         cq = &priv->rx_cq[ring];
1359                         cq->moder_time = moder_time;
1360                         cq->moder_cnt = priv->rx_frames;
1361                         err = mlx4_en_set_cq_moder(priv, cq);
1362                         if (err)
1363                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1364                                        ring);
1365                 }
1366                 priv->last_moder_packets[ring] = rx_packets;
1367                 priv->last_moder_bytes[ring] = rx_bytes;
1368         }
1369
1370         priv->last_moder_jiffies = jiffies;
1371 }
1372
1373 static void mlx4_en_do_get_stats(struct work_struct *work)
1374 {
1375         struct delayed_work *delay = to_delayed_work(work);
1376         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1377                                                  stats_task);
1378         struct mlx4_en_dev *mdev = priv->mdev;
1379         int err;
1380
1381         mutex_lock(&mdev->state_lock);
1382         if (mdev->device_up) {
1383                 if (priv->port_up) {
1384                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1385                         if (err)
1386                                 en_dbg(HW, priv, "Could not update stats\n");
1387
1388                         mlx4_en_auto_moderation(priv);
1389                 }
1390
1391                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1392         }
1393         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1394                 mlx4_en_do_set_mac(priv);
1395                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1396         }
1397         mutex_unlock(&mdev->state_lock);
1398 }
1399
1400 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1401  * periodically
1402  */
1403 static void mlx4_en_service_task(struct work_struct *work)
1404 {
1405         struct delayed_work *delay = to_delayed_work(work);
1406         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1407                                                  service_task);
1408         struct mlx4_en_dev *mdev = priv->mdev;
1409
1410         mutex_lock(&mdev->state_lock);
1411         if (mdev->device_up) {
1412                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1413                         mlx4_en_ptp_overflow_check(mdev);
1414
1415                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1416                                    SERVICE_TASK_DELAY);
1417         }
1418         mutex_unlock(&mdev->state_lock);
1419 }
1420
1421 static void mlx4_en_linkstate(struct work_struct *work)
1422 {
1423         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1424                                                  linkstate_task);
1425         struct mlx4_en_dev *mdev = priv->mdev;
1426         int linkstate = priv->link_state;
1427
1428         mutex_lock(&mdev->state_lock);
1429         /* If observable port state changed set carrier state and
1430          * report to system log */
1431         if (priv->last_link_state != linkstate) {
1432                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1433                         en_info(priv, "Link Down\n");
1434                         netif_carrier_off(priv->dev);
1435                 } else {
1436                         en_info(priv, "Link Up\n");
1437                         netif_carrier_on(priv->dev);
1438                 }
1439         }
1440         priv->last_link_state = linkstate;
1441         mutex_unlock(&mdev->state_lock);
1442 }
1443
1444
1445 int mlx4_en_start_port(struct net_device *dev)
1446 {
1447         struct mlx4_en_priv *priv = netdev_priv(dev);
1448         struct mlx4_en_dev *mdev = priv->mdev;
1449         struct mlx4_en_cq *cq;
1450         struct mlx4_en_tx_ring *tx_ring;
1451         int rx_index = 0;
1452         int tx_index = 0;
1453         int err = 0;
1454         int i;
1455         int j;
1456         u8 mc_list[16] = {0};
1457
1458         if (priv->port_up) {
1459                 en_dbg(DRV, priv, "start port called while port already up\n");
1460                 return 0;
1461         }
1462
1463         INIT_LIST_HEAD(&priv->mc_list);
1464         INIT_LIST_HEAD(&priv->curr_list);
1465         INIT_LIST_HEAD(&priv->ethtool_list);
1466         memset(&priv->ethtool_rules[0], 0,
1467                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1468
1469         /* Calculate Rx buf size */
1470         dev->mtu = min(dev->mtu, priv->max_mtu);
1471         mlx4_en_calc_rx_buf(dev);
1472         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1473
1474         /* Configure rx cq's and rings */
1475         err = mlx4_en_activate_rx_rings(priv);
1476         if (err) {
1477                 en_err(priv, "Failed to activate RX rings\n");
1478                 return err;
1479         }
1480         for (i = 0; i < priv->rx_ring_num; i++) {
1481                 cq = &priv->rx_cq[i];
1482
1483                 mlx4_en_cq_init_lock(cq);
1484
1485                 err = mlx4_en_activate_cq(priv, cq, i);
1486                 if (err) {
1487                         en_err(priv, "Failed activating Rx CQ\n");
1488                         goto cq_err;
1489                 }
1490                 for (j = 0; j < cq->size; j++)
1491                         cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1492                 err = mlx4_en_set_cq_moder(priv, cq);
1493                 if (err) {
1494                         en_err(priv, "Failed setting cq moderation parameters");
1495                         mlx4_en_deactivate_cq(priv, cq);
1496                         goto cq_err;
1497                 }
1498                 mlx4_en_arm_cq(priv, cq);
1499                 priv->rx_ring[i].cqn = cq->mcq.cqn;
1500                 ++rx_index;
1501         }
1502
1503         /* Set qp number */
1504         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1505         err = mlx4_en_get_qp(priv);
1506         if (err) {
1507                 en_err(priv, "Failed getting eth qp\n");
1508                 goto cq_err;
1509         }
1510         mdev->mac_removed[priv->port] = 0;
1511
1512         err = mlx4_en_config_rss_steer(priv);
1513         if (err) {
1514                 en_err(priv, "Failed configuring rss steering\n");
1515                 goto mac_err;
1516         }
1517
1518         err = mlx4_en_create_drop_qp(priv);
1519         if (err)
1520                 goto rss_err;
1521
1522         /* Configure tx cq's and rings */
1523         for (i = 0; i < priv->tx_ring_num; i++) {
1524                 /* Configure cq */
1525                 cq = &priv->tx_cq[i];
1526                 err = mlx4_en_activate_cq(priv, cq, i);
1527                 if (err) {
1528                         en_err(priv, "Failed allocating Tx CQ\n");
1529                         goto tx_err;
1530                 }
1531                 err = mlx4_en_set_cq_moder(priv, cq);
1532                 if (err) {
1533                         en_err(priv, "Failed setting cq moderation parameters");
1534                         mlx4_en_deactivate_cq(priv, cq);
1535                         goto tx_err;
1536                 }
1537                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1538                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1539
1540                 /* Configure ring */
1541                 tx_ring = &priv->tx_ring[i];
1542                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1543                         i / priv->num_tx_rings_p_up);
1544                 if (err) {
1545                         en_err(priv, "Failed allocating Tx ring\n");
1546                         mlx4_en_deactivate_cq(priv, cq);
1547                         goto tx_err;
1548                 }
1549                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1550
1551                 /* Arm CQ for TX completions */
1552                 mlx4_en_arm_cq(priv, cq);
1553
1554                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1555                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1556                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1557                 ++tx_index;
1558         }
1559
1560         /* Configure port */
1561         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1562                                     priv->rx_skb_size + ETH_FCS_LEN,
1563                                     priv->prof->tx_pause,
1564                                     priv->prof->tx_ppp,
1565                                     priv->prof->rx_pause,
1566                                     priv->prof->rx_ppp);
1567         if (err) {
1568                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1569                        priv->port, err);
1570                 goto tx_err;
1571         }
1572         /* Set default qp number */
1573         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1574         if (err) {
1575                 en_err(priv, "Failed setting default qp numbers\n");
1576                 goto tx_err;
1577         }
1578
1579         /* Init port */
1580         en_dbg(HW, priv, "Initializing port\n");
1581         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1582         if (err) {
1583                 en_err(priv, "Failed Initializing port\n");
1584                 goto tx_err;
1585         }
1586
1587         /* Attach rx QP to bradcast address */
1588         memset(&mc_list[10], 0xff, ETH_ALEN);
1589         mc_list[5] = priv->port; /* needed for B0 steering support */
1590         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1591                                   priv->port, 0, MLX4_PROT_ETH,
1592                                   &priv->broadcast_id))
1593                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1594
1595         /* Must redo promiscuous mode setup. */
1596         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1597
1598         /* Schedule multicast task to populate multicast list */
1599         queue_work(mdev->workqueue, &priv->rx_mode_task);
1600
1601         mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1602
1603         priv->port_up = true;
1604         netif_tx_start_all_queues(dev);
1605         netif_device_attach(dev);
1606
1607         return 0;
1608
1609 tx_err:
1610         while (tx_index--) {
1611                 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
1612                 mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
1613         }
1614         mlx4_en_destroy_drop_qp(priv);
1615 rss_err:
1616         mlx4_en_release_rss_steer(priv);
1617 mac_err:
1618         mlx4_en_put_qp(priv);
1619 cq_err:
1620         while (rx_index--)
1621                 mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
1622         for (i = 0; i < priv->rx_ring_num; i++)
1623                 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
1624
1625         return err; /* need to close devices */
1626 }
1627
1628
1629 void mlx4_en_stop_port(struct net_device *dev, int detach)
1630 {
1631         struct mlx4_en_priv *priv = netdev_priv(dev);
1632         struct mlx4_en_dev *mdev = priv->mdev;
1633         struct mlx4_en_mc_list *mclist, *tmp;
1634         struct ethtool_flow_id *flow, *tmp_flow;
1635         int i;
1636         u8 mc_list[16] = {0};
1637
1638         if (!priv->port_up) {
1639                 en_dbg(DRV, priv, "stop port called while port already down\n");
1640                 return;
1641         }
1642
1643         /* close port*/
1644         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1645
1646         /* Synchronize with tx routine */
1647         netif_tx_lock_bh(dev);
1648         if (detach)
1649                 netif_device_detach(dev);
1650         netif_tx_stop_all_queues(dev);
1651         netif_tx_unlock_bh(dev);
1652
1653         netif_tx_disable(dev);
1654
1655         /* Set port as not active */
1656         priv->port_up = false;
1657
1658         /* Promsicuous mode */
1659         if (mdev->dev->caps.steering_mode ==
1660             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1661                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1662                                  MLX4_EN_FLAG_MC_PROMISC);
1663                 mlx4_flow_steer_promisc_remove(mdev->dev,
1664                                                priv->port,
1665                                                MLX4_FS_ALL_DEFAULT);
1666                 mlx4_flow_steer_promisc_remove(mdev->dev,
1667                                                priv->port,
1668                                                MLX4_FS_MC_DEFAULT);
1669         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1670                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1671
1672                 /* Disable promiscouos mode */
1673                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1674                                             priv->port);
1675
1676                 /* Disable Multicast promisc */
1677                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1678                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1679                                                       priv->port);
1680                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1681                 }
1682         }
1683
1684         /* Detach All multicasts */
1685         memset(&mc_list[10], 0xff, ETH_ALEN);
1686         mc_list[5] = priv->port; /* needed for B0 steering support */
1687         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1688                               MLX4_PROT_ETH, priv->broadcast_id);
1689         list_for_each_entry(mclist, &priv->curr_list, list) {
1690                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1691                 mc_list[5] = priv->port;
1692                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1693                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1694         }
1695         mlx4_en_clear_list(dev);
1696         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1697                 list_del(&mclist->list);
1698                 kfree(mclist);
1699         }
1700
1701         /* Flush multicast filter */
1702         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1703
1704         /* Remove flow steering rules for the port*/
1705         if (mdev->dev->caps.steering_mode ==
1706             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1707                 ASSERT_RTNL();
1708                 list_for_each_entry_safe(flow, tmp_flow,
1709                                          &priv->ethtool_list, list) {
1710                         mlx4_flow_detach(mdev->dev, flow->id);
1711                         list_del(&flow->list);
1712                 }
1713         }
1714
1715         mlx4_en_destroy_drop_qp(priv);
1716
1717         /* Free TX Rings */
1718         for (i = 0; i < priv->tx_ring_num; i++) {
1719                 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
1720                 mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
1721         }
1722         msleep(10);
1723
1724         for (i = 0; i < priv->tx_ring_num; i++)
1725                 mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
1726
1727         /* Free RSS qps */
1728         mlx4_en_release_rss_steer(priv);
1729
1730         /* Unregister Mac address for the port */
1731         mlx4_en_put_qp(priv);
1732         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1733                 mdev->mac_removed[priv->port] = 1;
1734
1735         /* Free RX Rings */
1736         for (i = 0; i < priv->rx_ring_num; i++) {
1737                 struct mlx4_en_cq *cq = &priv->rx_cq[i];
1738
1739                 local_bh_disable();
1740                 while (!mlx4_en_cq_lock_napi(cq)) {
1741                         pr_info("CQ %d locked\n", i);
1742                         mdelay(1);
1743                 }
1744                 local_bh_enable();
1745
1746                 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state))
1747                         msleep(1);
1748                 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
1749                 mlx4_en_deactivate_cq(priv, cq);
1750         }
1751 }
1752
1753 static void mlx4_en_restart(struct work_struct *work)
1754 {
1755         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1756                                                  watchdog_task);
1757         struct mlx4_en_dev *mdev = priv->mdev;
1758         struct net_device *dev = priv->dev;
1759
1760         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1761
1762         mutex_lock(&mdev->state_lock);
1763         if (priv->port_up) {
1764                 mlx4_en_stop_port(dev, 1);
1765                 if (mlx4_en_start_port(dev))
1766                         en_err(priv, "Failed restarting port %d\n", priv->port);
1767         }
1768         mutex_unlock(&mdev->state_lock);
1769 }
1770
1771 static void mlx4_en_clear_stats(struct net_device *dev)
1772 {
1773         struct mlx4_en_priv *priv = netdev_priv(dev);
1774         struct mlx4_en_dev *mdev = priv->mdev;
1775         int i;
1776
1777         if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1778                 en_dbg(HW, priv, "Failed dumping statistics\n");
1779
1780         memset(&priv->stats, 0, sizeof(priv->stats));
1781         memset(&priv->pstats, 0, sizeof(priv->pstats));
1782         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1783         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1784
1785         for (i = 0; i < priv->tx_ring_num; i++) {
1786                 priv->tx_ring[i].bytes = 0;
1787                 priv->tx_ring[i].packets = 0;
1788                 priv->tx_ring[i].tx_csum = 0;
1789         }
1790         for (i = 0; i < priv->rx_ring_num; i++) {
1791                 priv->rx_ring[i].bytes = 0;
1792                 priv->rx_ring[i].packets = 0;
1793                 priv->rx_ring[i].csum_ok = 0;
1794                 priv->rx_ring[i].csum_none = 0;
1795         }
1796 }
1797
1798 static int mlx4_en_open(struct net_device *dev)
1799 {
1800         struct mlx4_en_priv *priv = netdev_priv(dev);
1801         struct mlx4_en_dev *mdev = priv->mdev;
1802         int err = 0;
1803
1804         mutex_lock(&mdev->state_lock);
1805
1806         if (!mdev->device_up) {
1807                 en_err(priv, "Cannot open - device down/disabled\n");
1808                 err = -EBUSY;
1809                 goto out;
1810         }
1811
1812         /* Reset HW statistics and SW counters */
1813         mlx4_en_clear_stats(dev);
1814
1815         err = mlx4_en_start_port(dev);
1816         if (err)
1817                 en_err(priv, "Failed starting port:%d\n", priv->port);
1818
1819 out:
1820         mutex_unlock(&mdev->state_lock);
1821         return err;
1822 }
1823
1824
1825 static int mlx4_en_close(struct net_device *dev)
1826 {
1827         struct mlx4_en_priv *priv = netdev_priv(dev);
1828         struct mlx4_en_dev *mdev = priv->mdev;
1829
1830         en_dbg(IFDOWN, priv, "Close port called\n");
1831
1832         mutex_lock(&mdev->state_lock);
1833
1834         mlx4_en_stop_port(dev, 0);
1835         netif_carrier_off(dev);
1836
1837         mutex_unlock(&mdev->state_lock);
1838         return 0;
1839 }
1840
1841 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1842 {
1843         int i;
1844
1845 #ifdef CONFIG_RFS_ACCEL
1846         free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1847         priv->dev->rx_cpu_rmap = NULL;
1848 #endif
1849
1850         for (i = 0; i < priv->tx_ring_num; i++) {
1851                 if (priv->tx_ring[i].tx_info)
1852                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1853                 if (priv->tx_cq[i].buf)
1854                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1855         }
1856
1857         for (i = 0; i < priv->rx_ring_num; i++) {
1858                 if (priv->rx_ring[i].rx_info)
1859                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1860                                 priv->prof->rx_ring_size, priv->stride);
1861                 if (priv->rx_cq[i].buf)
1862                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1863         }
1864
1865         if (priv->base_tx_qpn) {
1866                 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1867                 priv->base_tx_qpn = 0;
1868         }
1869 }
1870
1871 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1872 {
1873         struct mlx4_en_port_profile *prof = priv->prof;
1874         int i;
1875         int err;
1876
1877         err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn);
1878         if (err) {
1879                 en_err(priv, "failed reserving range for TX rings\n");
1880                 return err;
1881         }
1882
1883         /* Create tx Rings */
1884         for (i = 0; i < priv->tx_ring_num; i++) {
1885                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1886                                       prof->tx_ring_size, i, TX))
1887                         goto err;
1888
1889                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], priv->base_tx_qpn + i,
1890                                            prof->tx_ring_size, TXBB_SIZE))
1891                         goto err;
1892         }
1893
1894         /* Create rx Rings */
1895         for (i = 0; i < priv->rx_ring_num; i++) {
1896                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1897                                       prof->rx_ring_size, i, RX))
1898                         goto err;
1899
1900                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1901                                            prof->rx_ring_size, priv->stride))
1902                         goto err;
1903         }
1904
1905 #ifdef CONFIG_RFS_ACCEL
1906         if (priv->mdev->dev->caps.comp_pool) {
1907                 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
1908                 if (!priv->dev->rx_cpu_rmap)
1909                         goto err;
1910         }
1911 #endif
1912
1913         return 0;
1914
1915 err:
1916         en_err(priv, "Failed to allocate NIC resources\n");
1917         return -ENOMEM;
1918 }
1919
1920
1921 void mlx4_en_destroy_netdev(struct net_device *dev)
1922 {
1923         struct mlx4_en_priv *priv = netdev_priv(dev);
1924         struct mlx4_en_dev *mdev = priv->mdev;
1925
1926         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1927
1928         /* Unregister device - this will close the port if it was up */
1929         if (priv->registered)
1930                 unregister_netdev(dev);
1931
1932         if (priv->allocated)
1933                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1934
1935         cancel_delayed_work(&priv->stats_task);
1936         cancel_delayed_work(&priv->service_task);
1937         /* flush any pending task for this netdev */
1938         flush_workqueue(mdev->workqueue);
1939
1940         /* Detach the netdev so tasks would not attempt to access it */
1941         mutex_lock(&mdev->state_lock);
1942         mdev->pndev[priv->port] = NULL;
1943         mutex_unlock(&mdev->state_lock);
1944
1945         mlx4_en_free_resources(priv);
1946
1947         kfree(priv->tx_ring);
1948         kfree(priv->tx_cq);
1949
1950         free_netdev(dev);
1951 }
1952
1953 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1954 {
1955         struct mlx4_en_priv *priv = netdev_priv(dev);
1956         struct mlx4_en_dev *mdev = priv->mdev;
1957         int err = 0;
1958
1959         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
1960                  dev->mtu, new_mtu);
1961
1962         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
1963                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
1964                 return -EPERM;
1965         }
1966         dev->mtu = new_mtu;
1967
1968         if (netif_running(dev)) {
1969                 mutex_lock(&mdev->state_lock);
1970                 if (!mdev->device_up) {
1971                         /* NIC is probably restarting - let watchdog task reset
1972                          * the port */
1973                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
1974                 } else {
1975                         mlx4_en_stop_port(dev, 1);
1976                         err = mlx4_en_start_port(dev);
1977                         if (err) {
1978                                 en_err(priv, "Failed restarting port:%d\n",
1979                                          priv->port);
1980                                 queue_work(mdev->workqueue, &priv->watchdog_task);
1981                         }
1982                 }
1983                 mutex_unlock(&mdev->state_lock);
1984         }
1985         return 0;
1986 }
1987
1988 static int mlx4_en_hwtstamp_ioctl(struct net_device *dev, struct ifreq *ifr)
1989 {
1990         struct mlx4_en_priv *priv = netdev_priv(dev);
1991         struct mlx4_en_dev *mdev = priv->mdev;
1992         struct hwtstamp_config config;
1993
1994         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
1995                 return -EFAULT;
1996
1997         /* reserved for future extensions */
1998         if (config.flags)
1999                 return -EINVAL;
2000
2001         /* device doesn't support time stamping */
2002         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2003                 return -EINVAL;
2004
2005         /* TX HW timestamp */
2006         switch (config.tx_type) {
2007         case HWTSTAMP_TX_OFF:
2008         case HWTSTAMP_TX_ON:
2009                 break;
2010         default:
2011                 return -ERANGE;
2012         }
2013
2014         /* RX HW timestamp */
2015         switch (config.rx_filter) {
2016         case HWTSTAMP_FILTER_NONE:
2017                 break;
2018         case HWTSTAMP_FILTER_ALL:
2019         case HWTSTAMP_FILTER_SOME:
2020         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2021         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2022         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2023         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2024         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2025         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2026         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2027         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2028         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2029         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2030         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2031         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2032                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2033                 break;
2034         default:
2035                 return -ERANGE;
2036         }
2037
2038         if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) {
2039                 config.tx_type = HWTSTAMP_TX_OFF;
2040                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2041         }
2042
2043         return copy_to_user(ifr->ifr_data, &config,
2044                             sizeof(config)) ? -EFAULT : 0;
2045 }
2046
2047 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2048 {
2049         switch (cmd) {
2050         case SIOCSHWTSTAMP:
2051                 return mlx4_en_hwtstamp_ioctl(dev, ifr);
2052         default:
2053                 return -EOPNOTSUPP;
2054         }
2055 }
2056
2057 static int mlx4_en_set_features(struct net_device *netdev,
2058                 netdev_features_t features)
2059 {
2060         struct mlx4_en_priv *priv = netdev_priv(netdev);
2061
2062         if (features & NETIF_F_LOOPBACK)
2063                 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2064         else
2065                 priv->ctrl_flags &=
2066                         cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2067
2068         mlx4_en_update_loopback_state(netdev, features);
2069
2070         return 0;
2071
2072 }
2073
2074 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2075 {
2076         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2077         struct mlx4_en_dev *mdev = en_priv->mdev;
2078         u64 mac_u64 = mlx4_en_mac_to_u64(mac);
2079
2080         if (!is_valid_ether_addr(mac))
2081                 return -EINVAL;
2082
2083         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2084 }
2085
2086 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2087 {
2088         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2089         struct mlx4_en_dev *mdev = en_priv->mdev;
2090
2091         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2092 }
2093
2094 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2095 {
2096         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2097         struct mlx4_en_dev *mdev = en_priv->mdev;
2098
2099         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2100 }
2101
2102 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2103 {
2104         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2105         struct mlx4_en_dev *mdev = en_priv->mdev;
2106
2107         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2108 }
2109
2110 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2111 {
2112         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2113         struct mlx4_en_dev *mdev = en_priv->mdev;
2114
2115         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2116 }
2117 static const struct net_device_ops mlx4_netdev_ops = {
2118         .ndo_open               = mlx4_en_open,
2119         .ndo_stop               = mlx4_en_close,
2120         .ndo_start_xmit         = mlx4_en_xmit,
2121         .ndo_select_queue       = mlx4_en_select_queue,
2122         .ndo_get_stats          = mlx4_en_get_stats,
2123         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2124         .ndo_set_mac_address    = mlx4_en_set_mac,
2125         .ndo_validate_addr      = eth_validate_addr,
2126         .ndo_change_mtu         = mlx4_en_change_mtu,
2127         .ndo_do_ioctl           = mlx4_en_ioctl,
2128         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2129         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2130         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2131 #ifdef CONFIG_NET_POLL_CONTROLLER
2132         .ndo_poll_controller    = mlx4_en_netpoll,
2133 #endif
2134         .ndo_set_features       = mlx4_en_set_features,
2135         .ndo_setup_tc           = mlx4_en_setup_tc,
2136 #ifdef CONFIG_RFS_ACCEL
2137         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2138 #endif
2139 #ifdef CONFIG_NET_RX_BUSY_POLL
2140         .ndo_busy_poll          = mlx4_en_low_latency_recv,
2141 #endif
2142 };
2143
2144 static const struct net_device_ops mlx4_netdev_ops_master = {
2145         .ndo_open               = mlx4_en_open,
2146         .ndo_stop               = mlx4_en_close,
2147         .ndo_start_xmit         = mlx4_en_xmit,
2148         .ndo_select_queue       = mlx4_en_select_queue,
2149         .ndo_get_stats          = mlx4_en_get_stats,
2150         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2151         .ndo_set_mac_address    = mlx4_en_set_mac,
2152         .ndo_validate_addr      = eth_validate_addr,
2153         .ndo_change_mtu         = mlx4_en_change_mtu,
2154         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2155         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2156         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2157         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2158         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2159         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2160         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2161         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2162 #ifdef CONFIG_NET_POLL_CONTROLLER
2163         .ndo_poll_controller    = mlx4_en_netpoll,
2164 #endif
2165         .ndo_set_features       = mlx4_en_set_features,
2166         .ndo_setup_tc           = mlx4_en_setup_tc,
2167 #ifdef CONFIG_RFS_ACCEL
2168         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2169 #endif
2170 };
2171
2172 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2173                         struct mlx4_en_port_profile *prof)
2174 {
2175         struct net_device *dev;
2176         struct mlx4_en_priv *priv;
2177         int i;
2178         int err;
2179         u64 mac_u64;
2180
2181         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2182                                  MAX_TX_RINGS, MAX_RX_RINGS);
2183         if (dev == NULL)
2184                 return -ENOMEM;
2185
2186         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2187         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2188
2189         SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2190         dev->dev_id =  port - 1;
2191
2192         /*
2193          * Initialize driver private data
2194          */
2195
2196         priv = netdev_priv(dev);
2197         memset(priv, 0, sizeof(struct mlx4_en_priv));
2198         priv->dev = dev;
2199         priv->mdev = mdev;
2200         priv->ddev = &mdev->pdev->dev;
2201         priv->prof = prof;
2202         priv->port = port;
2203         priv->port_up = false;
2204         priv->flags = prof->flags;
2205         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2206                         MLX4_WQE_CTRL_SOLICITED);
2207         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2208         priv->tx_ring_num = prof->tx_ring_num;
2209
2210         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring) * MAX_TX_RINGS,
2211                                 GFP_KERNEL);
2212         if (!priv->tx_ring) {
2213                 err = -ENOMEM;
2214                 goto out;
2215         }
2216         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq) * MAX_TX_RINGS,
2217                               GFP_KERNEL);
2218         if (!priv->tx_cq) {
2219                 err = -ENOMEM;
2220                 goto out;
2221         }
2222         priv->rx_ring_num = prof->rx_ring_num;
2223         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2224         priv->mac_index = -1;
2225         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2226         spin_lock_init(&priv->stats_lock);
2227         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2228         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2229         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2230         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2231         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2232 #ifdef CONFIG_MLX4_EN_DCB
2233         if (!mlx4_is_slave(priv->mdev->dev)) {
2234                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2235                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2236                 } else {
2237                         en_info(priv, "enabling only PFC DCB ops\n");
2238                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2239                 }
2240         }
2241 #endif
2242
2243         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2244                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2245
2246         /* Query for default mac and max mtu */
2247         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2248
2249         /* Set default MAC */
2250         dev->addr_len = ETH_ALEN;
2251         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2252         if (!is_valid_ether_addr(dev->dev_addr)) {
2253                 if (mlx4_is_slave(priv->mdev->dev)) {
2254                         eth_hw_addr_random(dev);
2255                         en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2256                         mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr);
2257                         mdev->dev->caps.def_mac[priv->port] = mac_u64;
2258                 } else {
2259                         en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2260                                priv->port, dev->dev_addr);
2261                         err = -EINVAL;
2262                         goto out;
2263                 }
2264         }
2265
2266         memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac));
2267
2268         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2269                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2270         err = mlx4_en_alloc_resources(priv);
2271         if (err)
2272                 goto out;
2273
2274 #ifdef CONFIG_RFS_ACCEL
2275         INIT_LIST_HEAD(&priv->filters);
2276         spin_lock_init(&priv->filters_lock);
2277 #endif
2278
2279         /* Initialize time stamping config */
2280         priv->hwtstamp_config.flags = 0;
2281         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2282         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2283
2284         /* Allocate page for receive rings */
2285         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2286                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2287         if (err) {
2288                 en_err(priv, "Failed to allocate page for rx qps\n");
2289                 goto out;
2290         }
2291         priv->allocated = 1;
2292
2293         /*
2294          * Initialize netdev entry points
2295          */
2296         if (mlx4_is_master(priv->mdev->dev))
2297                 dev->netdev_ops = &mlx4_netdev_ops_master;
2298         else
2299                 dev->netdev_ops = &mlx4_netdev_ops;
2300         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2301         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2302         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2303
2304         SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
2305
2306         /*
2307          * Set driver features
2308          */
2309         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2310         if (mdev->LSO_support)
2311                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2312
2313         dev->vlan_features = dev->hw_features;
2314
2315         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2316         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2317                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2318                         NETIF_F_HW_VLAN_CTAG_FILTER;
2319         dev->hw_features |= NETIF_F_LOOPBACK;
2320
2321         if (mdev->dev->caps.steering_mode ==
2322             MLX4_STEERING_MODE_DEVICE_MANAGED)
2323                 dev->hw_features |= NETIF_F_NTUPLE;
2324
2325         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2326                 dev->priv_flags |= IFF_UNICAST_FLT;
2327
2328         mdev->pndev[port] = dev;
2329
2330         netif_carrier_off(dev);
2331         mlx4_en_set_default_moderation(priv);
2332
2333         err = register_netdev(dev);
2334         if (err) {
2335                 en_err(priv, "Netdev registration failed for port %d\n", port);
2336                 goto out;
2337         }
2338         priv->registered = 1;
2339
2340         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2341         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2342
2343         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2344
2345         /* Configure port */
2346         mlx4_en_calc_rx_buf(dev);
2347         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2348                                     priv->rx_skb_size + ETH_FCS_LEN,
2349                                     prof->tx_pause, prof->tx_ppp,
2350                                     prof->rx_pause, prof->rx_ppp);
2351         if (err) {
2352                 en_err(priv, "Failed setting port general configurations "
2353                        "for port %d, with error %d\n", priv->port, err);
2354                 goto out;
2355         }
2356
2357         /* Init port */
2358         en_warn(priv, "Initializing port\n");
2359         err = mlx4_INIT_PORT(mdev->dev, priv->port);
2360         if (err) {
2361                 en_err(priv, "Failed Initializing port\n");
2362                 goto out;
2363         }
2364         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2365
2366         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2367                 queue_delayed_work(mdev->workqueue, &priv->service_task,
2368                                    SERVICE_TASK_DELAY);
2369
2370         return 0;
2371
2372 out:
2373         mlx4_en_destroy_netdev(dev);
2374         return err;
2375 }
2376