Pileus Git - ~andy/linux/blob - drivers/net/ethernet/mellanox/mlx4/en_netdev.c

   1 /*
   2  * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/etherdevice.h>
  35 #include <linux/tcp.h>
  36 #include <linux/if_vlan.h>
  37 #include <linux/delay.h>
  38 #include <linux/slab.h>
  39 #include <linux/hash.h>
  40 #include <net/ip.h>
  41 #include <net/busy_poll.h>
  42
  43 #include <linux/mlx4/driver.h>
  44 #include <linux/mlx4/device.h>
  45 #include <linux/mlx4/cmd.h>
  46 #include <linux/mlx4/cq.h>
  47
  48 #include "mlx4_en.h"
  49 #include "en_port.h"
  50
  51 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  52 {
  53         struct mlx4_en_priv *priv = netdev_priv(dev);
  54         int i;
  55         unsigned int offset = 0;
  56
  57         if (up && up != MLX4_EN_NUM_UP)
  58                 return -EINVAL;
  59
  60         netdev_set_num_tc(dev, up);
  61
  62         /* Partition Tx queues evenly amongst UP's */
  63         for (i = 0; i < up; i++) {
  64                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  65                 offset += priv->num_tx_rings_p_up;
  66         }
  67
  68         return 0;
  69 }
  70
  71 #ifdef CONFIG_NET_RX_BUSY_POLL
  72 /* must be called with local_bh_disable()d */
  73 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
  74 {
  75         struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
  76         struct net_device *dev = cq->dev;
  77         struct mlx4_en_priv *priv = netdev_priv(dev);
  78         struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
  79         int done;
  80
  81         if (!priv->port_up)
  82                 return LL_FLUSH_FAILED;
  83
  84         if (!mlx4_en_cq_lock_poll(cq))
  85                 return LL_FLUSH_BUSY;
  86
  87         done = mlx4_en_process_rx_cq(dev, cq, 4);
  88         if (likely(done))
  89                 rx_ring->cleaned += done;
  90         else
  91                 rx_ring->misses++;
  92
  93         mlx4_en_cq_unlock_poll(cq);
  94
  95         return done;
  96 }
  97 #endif  /* CONFIG_NET_RX_BUSY_POLL */
  98
  99 #ifdef CONFIG_RFS_ACCEL
 100
 101 struct mlx4_en_filter {
 102         struct list_head next;
 103         struct work_struct work;
 104
 105         u8     ip_proto;
 106         __be32 src_ip;
 107         __be32 dst_ip;
 108         __be16 src_port;
 109         __be16 dst_port;
 110
 111         int rxq_index;
 112         struct mlx4_en_priv *priv;
 113         u32 flow_id;                    /* RFS infrastructure id */
 114         int id;                         /* mlx4_en driver id */
 115         u64 reg_id;                     /* Flow steering API id */
 116         u8 activated;                   /* Used to prevent expiry before filter
 117                                          * is attached
 118                                          */
 119         struct hlist_node filter_chain;
 120 };
 121
 122 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 123
 124 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 125 {
 126         switch (ip_proto) {
 127         case IPPROTO_UDP:
 128                 return MLX4_NET_TRANS_RULE_ID_UDP;
 129         case IPPROTO_TCP:
 130                 return MLX4_NET_TRANS_RULE_ID_TCP;
 131         default:
 132                 return -EPROTONOSUPPORT;
 133         }
 134 };
 135
 136 static void mlx4_en_filter_work(struct work_struct *work)
 137 {
 138         struct mlx4_en_filter *filter = container_of(work,
 139                                                      struct mlx4_en_filter,
 140                                                      work);
 141         struct mlx4_en_priv *priv = filter->priv;
 142         struct mlx4_spec_list spec_tcp_udp = {
 143                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 144                 {
 145                         .tcp_udp = {
 146                                 .dst_port = filter->dst_port,
 147                                 .dst_port_msk = (__force __be16)-1,
 148                                 .src_port = filter->src_port,
 149                                 .src_port_msk = (__force __be16)-1,
 150                         },
 151                 },
 152         };
 153         struct mlx4_spec_list spec_ip = {
 154                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 155                 {
 156                         .ipv4 = {
 157                                 .dst_ip = filter->dst_ip,
 158                                 .dst_ip_msk = (__force __be32)-1,
 159                                 .src_ip = filter->src_ip,
 160                                 .src_ip_msk = (__force __be32)-1,
 161                         },
 162                 },
 163         };
 164         struct mlx4_spec_list spec_eth = {
 165                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 166         };
 167         struct mlx4_net_trans_rule rule = {
 168                 .list = LIST_HEAD_INIT(rule.list),
 169                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 170                 .exclusive = 1,
 171                 .allow_loopback = 1,
 172                 .promisc_mode = MLX4_FS_REGULAR,
 173                 .port = priv->port,
 174                 .priority = MLX4_DOMAIN_RFS,
 175         };
 176         int rc;
 177         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 178
 179         if (spec_tcp_udp.id < 0) {
 180                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 181                         filter->ip_proto);
 182                 goto ignore;
 183         }
 184         list_add_tail(&spec_eth.list, &rule.list);
 185         list_add_tail(&spec_ip.list, &rule.list);
 186         list_add_tail(&spec_tcp_udp.list, &rule.list);
 187
 188         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 189         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 190         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 191
 192         filter->activated = 0;
 193
 194         if (filter->reg_id) {
 195                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 196                 if (rc && rc != -ENOENT)
 197                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 198         }
 199
 200         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 201         if (rc)
 202                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 203
 204 ignore:
 205         mlx4_en_filter_rfs_expire(priv);
 206
 207         filter->activated = 1;
 208 }
 209
 210 static inline struct hlist_head *
 211 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 212                    __be16 src_port, __be16 dst_port)
 213 {
 214         unsigned long l;
 215         int bucket_idx;
 216
 217         l = (__force unsigned long)src_port |
 218             ((__force unsigned long)dst_port << 2);
 219         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 220
 221         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 222
 223         return &priv->filter_hash[bucket_idx];
 224 }
 225
 226 static struct mlx4_en_filter *
 227 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 228                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 229                      __be16 dst_port, u32 flow_id)
 230 {
 231         struct mlx4_en_filter *filter = NULL;
 232
 233         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 234         if (!filter)
 235                 return NULL;
 236
 237         filter->priv = priv;
 238         filter->rxq_index = rxq_index;
 239         INIT_WORK(&filter->work, mlx4_en_filter_work);
 240
 241         filter->src_ip = src_ip;
 242         filter->dst_ip = dst_ip;
 243         filter->ip_proto = ip_proto;
 244         filter->src_port = src_port;
 245         filter->dst_port = dst_port;
 246
 247         filter->flow_id = flow_id;
 248
 249         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 250
 251         list_add_tail(&filter->next, &priv->filters);
 252         hlist_add_head(&filter->filter_chain,
 253                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 254                                           dst_port));
 255
 256         return filter;
 257 }
 258
 259 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 260 {
 261         struct mlx4_en_priv *priv = filter->priv;
 262         int rc;
 263
 264         list_del(&filter->next);
 265
 266         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 267         if (rc && rc != -ENOENT)
 268                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 269
 270         kfree(filter);
 271 }
 272
 273 static inline struct mlx4_en_filter *
 274 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 275                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 276 {
 277         struct mlx4_en_filter *filter;
 278         struct mlx4_en_filter *ret = NULL;
 279
 280         hlist_for_each_entry(filter,
 281                              filter_hash_bucket(priv, src_ip, dst_ip,
 282                                                 src_port, dst_port),
 283                              filter_chain) {
 284                 if (filter->src_ip == src_ip &&
 285                     filter->dst_ip == dst_ip &&
 286                     filter->ip_proto == ip_proto &&
 287                     filter->src_port == src_port &&
 288                     filter->dst_port == dst_port) {
 289                         ret = filter;
 290                         break;
 291                 }
 292         }
 293
 294         return ret;
 295 }
 296
 297 static int
 298 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 299                    u16 rxq_index, u32 flow_id)
 300 {
 301         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 302         struct mlx4_en_filter *filter;
 303         const struct iphdr *ip;
 304         const __be16 *ports;
 305         u8 ip_proto;
 306         __be32 src_ip;
 307         __be32 dst_ip;
 308         __be16 src_port;
 309         __be16 dst_port;
 310         int nhoff = skb_network_offset(skb);
 311         int ret = 0;
 312
 313         if (skb->protocol != htons(ETH_P_IP))
 314                 return -EPROTONOSUPPORT;
 315
 316         ip = (const struct iphdr *)(skb->data + nhoff);
 317         if (ip_is_fragment(ip))
 318                 return -EPROTONOSUPPORT;
 319
 320         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 321                 return -EPROTONOSUPPORT;
 322         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 323
 324         ip_proto = ip->protocol;
 325         src_ip = ip->saddr;
 326         dst_ip = ip->daddr;
 327         src_port = ports[0];
 328         dst_port = ports[1];
 329
 330         spin_lock_bh(&priv->filters_lock);
 331         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 332                                      src_port, dst_port);
 333         if (filter) {
 334                 if (filter->rxq_index == rxq_index)
 335                         goto out;
 336
 337                 filter->rxq_index = rxq_index;
 338         } else {
 339                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 340                                               src_ip, dst_ip, ip_proto,
 341                                               src_port, dst_port, flow_id);
 342                 if (!filter) {
 343                         ret = -ENOMEM;
 344                         goto err;
 345                 }
 346         }
 347
 348         queue_work(priv->mdev->workqueue, &filter->work);
 349
 350 out:
 351         ret = filter->id;
 352 err:
 353         spin_unlock_bh(&priv->filters_lock);
 354
 355         return ret;
 356 }
 357
 358 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 359 {
 360         struct mlx4_en_filter *filter, *tmp;
 361         LIST_HEAD(del_list);
 362
 363         spin_lock_bh(&priv->filters_lock);
 364         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 365                 list_move(&filter->next, &del_list);
 366                 hlist_del(&filter->filter_chain);
 367         }
 368         spin_unlock_bh(&priv->filters_lock);
 369
 370         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 371                 cancel_work_sync(&filter->work);
 372                 mlx4_en_filter_free(filter);
 373         }
 374 }
 375
 376 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 377 {
 378         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 379         LIST_HEAD(del_list);
 380         int i = 0;
 381
 382         spin_lock_bh(&priv->filters_lock);
 383         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 384                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 385                         break;
 386
 387                 if (filter->activated &&
 388                     !work_pending(&filter->work) &&
 389                     rps_may_expire_flow(priv->dev,
 390                                         filter->rxq_index, filter->flow_id,
 391                                         filter->id)) {
 392                         list_move(&filter->next, &del_list);
 393                         hlist_del(&filter->filter_chain);
 394                 } else
 395                         last_filter = filter;
 396
 397                 i++;
 398         }
 399
 400         if (last_filter && (&last_filter->next != priv->filters.next))
 401                 list_move(&priv->filters, &last_filter->next);
 402
 403         spin_unlock_bh(&priv->filters_lock);
 404
 405         list_for_each_entry_safe(filter, tmp, &del_list, next)
 406                 mlx4_en_filter_free(filter);
 407 }
 408 #endif
 409
 410 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 411                                    __be16 proto, u16 vid)
 412 {
 413         struct mlx4_en_priv *priv = netdev_priv(dev);
 414         struct mlx4_en_dev *mdev = priv->mdev;
 415         int err;
 416         int idx;
 417
 418         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 419
 420         set_bit(vid, priv->active_vlans);
 421
 422         /* Add VID to port VLAN filter */
 423         mutex_lock(&mdev->state_lock);
 424         if (mdev->device_up && priv->port_up) {
 425                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 426                 if (err)
 427                         en_err(priv, "Failed configuring VLAN filter\n");
 428         }
 429         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 430                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 431         mutex_unlock(&mdev->state_lock);
 432
 433         return 0;
 434 }
 435
 436 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 437                                     __be16 proto, u16 vid)
 438 {
 439         struct mlx4_en_priv *priv = netdev_priv(dev);
 440         struct mlx4_en_dev *mdev = priv->mdev;
 441         int err;
 442
 443         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 444
 445         clear_bit(vid, priv->active_vlans);
 446
 447         /* Remove VID from port VLAN filter */
 448         mutex_lock(&mdev->state_lock);
 449         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 450
 451         if (mdev->device_up && priv->port_up) {
 452                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 453                 if (err)
 454                         en_err(priv, "Failed configuring VLAN filter\n");
 455         }
 456         mutex_unlock(&mdev->state_lock);
 457
 458         return 0;
 459 }
 460
 461 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 462 {
 463         int i;
 464         for (i = ETH_ALEN - 1; i >= 0; --i) {
 465                 dst_mac[i] = src_mac & 0xff;
 466                 src_mac >>= 8;
 467         }
 468         memset(&dst_mac[ETH_ALEN], 0, 2);
 469 }
 470
 471
 472 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 473                                     int qpn, u64 *reg_id)
 474 {
 475         int err;
 476         struct mlx4_spec_list spec_eth_outer = { {NULL} };
 477         struct mlx4_spec_list spec_vxlan     = { {NULL} };
 478         struct mlx4_spec_list spec_eth_inner = { {NULL} };
 479
 480         struct mlx4_net_trans_rule rule = {
 481                 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 482                 .exclusive = 0,
 483                 .allow_loopback = 1,
 484                 .promisc_mode = MLX4_FS_REGULAR,
 485                 .priority = MLX4_DOMAIN_NIC,
 486         };
 487
 488         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 489
 490         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
 491                 return 0; /* do nothing */
 492
 493         rule.port = priv->port;
 494         rule.qpn = qpn;
 495         INIT_LIST_HEAD(&rule.list);
 496
 497         spec_eth_outer.id = MLX4_NET_TRANS_RULE_ID_ETH;
 498         memcpy(spec_eth_outer.eth.dst_mac, addr, ETH_ALEN);
 499         memcpy(spec_eth_outer.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 500
 501         spec_vxlan.id = MLX4_NET_TRANS_RULE_ID_VXLAN;    /* any vxlan header */
 502         spec_eth_inner.id = MLX4_NET_TRANS_RULE_ID_ETH;  /* any inner eth header */
 503
 504         list_add_tail(&spec_eth_outer.list, &rule.list);
 505         list_add_tail(&spec_vxlan.list,     &rule.list);
 506         list_add_tail(&spec_eth_inner.list, &rule.list);
 507
 508         err = mlx4_flow_attach(priv->mdev->dev, &rule, reg_id);
 509         if (err) {
 510                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 511                 return err;
 512         }
 513         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 514         return 0;
 515 }
 516
 517
 518 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 519                                 unsigned char *mac, int *qpn, u64 *reg_id)
 520 {
 521         struct mlx4_en_dev *mdev = priv->mdev;
 522         struct mlx4_dev *dev = mdev->dev;
 523         int err;
 524
 525         switch (dev->caps.steering_mode) {
 526         case MLX4_STEERING_MODE_B0: {
 527                 struct mlx4_qp qp;
 528                 u8 gid[16] = {0};
 529
 530                 qp.qpn = *qpn;
 531                 memcpy(&gid[10], mac, ETH_ALEN);
 532                 gid[5] = priv->port;
 533
 534                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 535                 break;
 536         }
 537         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 538                 struct mlx4_spec_list spec_eth = { {NULL} };
 539                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 540
 541                 struct mlx4_net_trans_rule rule = {
 542                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 543                         .exclusive = 0,
 544                         .allow_loopback = 1,
 545                         .promisc_mode = MLX4_FS_REGULAR,
 546                         .priority = MLX4_DOMAIN_NIC,
 547                 };
 548
 549                 rule.port = priv->port;
 550                 rule.qpn = *qpn;
 551                 INIT_LIST_HEAD(&rule.list);
 552
 553                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 554                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 555                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 556                 list_add_tail(&spec_eth.list, &rule.list);
 557
 558                 err = mlx4_flow_attach(dev, &rule, reg_id);
 559                 break;
 560         }
 561         default:
 562                 return -EINVAL;
 563         }
 564         if (err)
 565                 en_warn(priv, "Failed Attaching Unicast\n");
 566
 567         return err;
 568 }
 569
 570 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 571                                      unsigned char *mac, int qpn, u64 reg_id)
 572 {
 573         struct mlx4_en_dev *mdev = priv->mdev;
 574         struct mlx4_dev *dev = mdev->dev;
 575
 576         switch (dev->caps.steering_mode) {
 577         case MLX4_STEERING_MODE_B0: {
 578                 struct mlx4_qp qp;
 579                 u8 gid[16] = {0};
 580
 581                 qp.qpn = qpn;
 582                 memcpy(&gid[10], mac, ETH_ALEN);
 583                 gid[5] = priv->port;
 584
 585                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 586                 break;
 587         }
 588         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 589                 mlx4_flow_detach(dev, reg_id);
 590                 break;
 591         }
 592         default:
 593                 en_err(priv, "Invalid steering mode.\n");
 594         }
 595 }
 596
 597 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 598 {
 599         struct mlx4_en_dev *mdev = priv->mdev;
 600         struct mlx4_dev *dev = mdev->dev;
 601         struct mlx4_mac_entry *entry;
 602         int index = 0;
 603         int err = 0;
 604         u64 reg_id;
 605         int *qpn = &priv->base_qpn;
 606         u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
 607
 608         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 609                priv->dev->dev_addr);
 610         index = mlx4_register_mac(dev, priv->port, mac);
 611         if (index < 0) {
 612                 err = index;
 613                 en_err(priv, "Failed adding MAC: %pM\n",
 614                        priv->dev->dev_addr);
 615                 return err;
 616         }
 617
 618         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 619                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 620                 *qpn = base_qpn + index;
 621                 return 0;
 622         }
 623
 624         err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
 625         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 626         if (err) {
 627                 en_err(priv, "Failed to reserve qp for mac registration\n");
 628                 goto qp_err;
 629         }
 630
 631         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
 632         if (err)
 633                 goto steer_err;
 634
 635         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
 636                                        &priv->tunnel_reg_id);
 637         if (err)
 638                 goto tunnel_err;
 639
 640         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
 641         if (!entry) {
 642                 err = -ENOMEM;
 643                 goto alloc_err;
 644         }
 645         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
 646         entry->reg_id = reg_id;
 647
 648         hlist_add_head_rcu(&entry->hlist,
 649                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
 650
 651         return 0;
 652
 653 alloc_err:
 654         if (priv->tunnel_reg_id)
 655                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 656 tunnel_err:
 657         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
 658
 659 steer_err:
 660         mlx4_qp_release_range(dev, *qpn, 1);
 661
 662 qp_err:
 663         mlx4_unregister_mac(dev, priv->port, mac);
 664         return err;
 665 }
 666
 667 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 668 {
 669         struct mlx4_en_dev *mdev = priv->mdev;
 670         struct mlx4_dev *dev = mdev->dev;
 671         int qpn = priv->base_qpn;
 672         u64 mac;
 673
 674         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 675                 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
 676                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 677                        priv->dev->dev_addr);
 678                 mlx4_unregister_mac(dev, priv->port, mac);
 679         } else {
 680                 struct mlx4_mac_entry *entry;
 681                 struct hlist_node *tmp;
 682                 struct hlist_head *bucket;
 683                 unsigned int i;
 684
 685                 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
 686                         bucket = &priv->mac_hash[i];
 687                         hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 688                                 mac = mlx4_en_mac_to_u64(entry->mac);
 689                                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 690                                        entry->mac);
 691                                 mlx4_en_uc_steer_release(priv, entry->mac,
 692                                                          qpn, entry->reg_id);
 693
 694                                 mlx4_unregister_mac(dev, priv->port, mac);
 695                                 hlist_del_rcu(&entry->hlist);
 696                                 kfree_rcu(entry, rcu);
 697                         }
 698                 }
 699
 700                 if (priv->tunnel_reg_id) {
 701                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 702                         priv->tunnel_reg_id = 0;
 703                 }
 704
 705                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 706                        priv->port, qpn);
 707                 mlx4_qp_release_range(dev, qpn, 1);
 708                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 709         }
 710 }
 711
 712 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 713                                unsigned char *new_mac, unsigned char *prev_mac)
 714 {
 715         struct mlx4_en_dev *mdev = priv->mdev;
 716         struct mlx4_dev *dev = mdev->dev;
 717         int err = 0;
 718         u64 new_mac_u64 = mlx4_en_mac_to_u64(new_mac);
 719
 720         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 721                 struct hlist_head *bucket;
 722                 unsigned int mac_hash;
 723                 struct mlx4_mac_entry *entry;
 724                 struct hlist_node *tmp;
 725                 u64 prev_mac_u64 = mlx4_en_mac_to_u64(prev_mac);
 726
 727                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 728                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 729                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 730                                 mlx4_en_uc_steer_release(priv, entry->mac,
 731                                                          qpn, entry->reg_id);
 732                                 mlx4_unregister_mac(dev, priv->port,
 733                                                     prev_mac_u64);
 734                                 hlist_del_rcu(&entry->hlist);
 735                                 synchronize_rcu();
 736                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 737                                 entry->reg_id = 0;
 738                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 739                                 hlist_add_head_rcu(&entry->hlist,
 740                                                    &priv->mac_hash[mac_hash]);
 741                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 742                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 743                                                            &qpn,
 744                                                            &entry->reg_id);
 745                                 return err;
 746                         }
 747                 }
 748                 return -EINVAL;
 749         }
 750
 751         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 752 }
 753
 754 u64 mlx4_en_mac_to_u64(u8 *addr)
 755 {
 756         u64 mac = 0;
 757         int i;
 758
 759         for (i = 0; i < ETH_ALEN; i++) {
 760                 mac <<= 8;
 761                 mac |= addr[i];
 762         }
 763         return mac;
 764 }
 765
 766 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv)
 767 {
 768         int err = 0;
 769
 770         if (priv->port_up) {
 771                 /* Remove old MAC and insert the new one */
 772                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 773                                           priv->dev->dev_addr, priv->prev_mac);
 774                 if (err)
 775                         en_err(priv, "Failed changing HW MAC address\n");
 776                 memcpy(priv->prev_mac, priv->dev->dev_addr,
 777                        sizeof(priv->prev_mac));
 778         } else
 779                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 780
 781         return err;
 782 }
 783
 784 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 785 {
 786         struct mlx4_en_priv *priv = netdev_priv(dev);
 787         struct mlx4_en_dev *mdev = priv->mdev;
 788         struct sockaddr *saddr = addr;
 789         int err;
 790
 791         if (!is_valid_ether_addr(saddr->sa_data))
 792                 return -EADDRNOTAVAIL;
 793
 794         memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 795
 796         mutex_lock(&mdev->state_lock);
 797         err = mlx4_en_do_set_mac(priv);
 798         mutex_unlock(&mdev->state_lock);
 799
 800         return err;
 801 }
 802
 803 static void mlx4_en_clear_list(struct net_device *dev)
 804 {
 805         struct mlx4_en_priv *priv = netdev_priv(dev);
 806         struct mlx4_en_mc_list *tmp, *mc_to_del;
 807
 808         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 809                 list_del(&mc_to_del->list);
 810                 kfree(mc_to_del);
 811         }
 812 }
 813
 814 static void mlx4_en_cache_mclist(struct net_device *dev)
 815 {
 816         struct mlx4_en_priv *priv = netdev_priv(dev);
 817         struct netdev_hw_addr *ha;
 818         struct mlx4_en_mc_list *tmp;
 819
 820         mlx4_en_clear_list(dev);
 821         netdev_for_each_mc_addr(ha, dev) {
 822                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 823                 if (!tmp) {
 824                         mlx4_en_clear_list(dev);
 825                         return;
 826                 }
 827                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 828                 list_add_tail(&tmp->list, &priv->mc_list);
 829         }
 830 }
 831
 832 static void update_mclist_flags(struct mlx4_en_priv *priv,
 833                                 struct list_head *dst,
 834                                 struct list_head *src)
 835 {
 836         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 837         bool found;
 838
 839         /* Find all the entries that should be removed from dst,
 840          * These are the entries that are not found in src
 841          */
 842         list_for_each_entry(dst_tmp, dst, list) {
 843                 found = false;
 844                 list_for_each_entry(src_tmp, src, list) {
 845                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 846                                 found = true;
 847                                 break;
 848                         }
 849                 }
 850                 if (!found)
 851                         dst_tmp->action = MCLIST_REM;
 852         }
 853
 854         /* Add entries that exist in src but not in dst
 855          * mark them as need to add
 856          */
 857         list_for_each_entry(src_tmp, src, list) {
 858                 found = false;
 859                 list_for_each_entry(dst_tmp, dst, list) {
 860                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 861                                 dst_tmp->action = MCLIST_NONE;
 862                                 found = true;
 863                                 break;
 864                         }
 865                 }
 866                 if (!found) {
 867                         new_mc = kmemdup(src_tmp,
 868                                          sizeof(struct mlx4_en_mc_list),
 869                                          GFP_KERNEL);
 870                         if (!new_mc)
 871                                 return;
 872
 873                         new_mc->action = MCLIST_ADD;
 874                         list_add_tail(&new_mc->list, dst);
 875                 }
 876         }
 877 }
 878
 879 static void mlx4_en_set_rx_mode(struct net_device *dev)
 880 {
 881         struct mlx4_en_priv *priv = netdev_priv(dev);
 882
 883         if (!priv->port_up)
 884                 return;
 885
 886         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 887 }
 888
 889 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 890                                      struct mlx4_en_dev *mdev)
 891 {
 892         int err = 0;
 893
 894         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 895                 if (netif_msg_rx_status(priv))
 896                         en_warn(priv, "Entering promiscuous mode\n");
 897                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 898
 899                 /* Enable promiscouos mode */
 900                 switch (mdev->dev->caps.steering_mode) {
 901                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 902                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 903                                                           priv->port,
 904                                                           priv->base_qpn,
 905                                                           MLX4_FS_ALL_DEFAULT);
 906                         if (err)
 907                                 en_err(priv, "Failed enabling promiscuous mode\n");
 908                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 909                         break;
 910
 911                 case MLX4_STEERING_MODE_B0:
 912                         err = mlx4_unicast_promisc_add(mdev->dev,
 913                                                        priv->base_qpn,
 914                                                        priv->port);
 915                         if (err)
 916                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 917
 918                         /* Add the default qp number as multicast
 919                          * promisc
 920                          */
 921                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 922                                 err = mlx4_multicast_promisc_add(mdev->dev,
 923                                                                  priv->base_qpn,
 924                                                                  priv->port);
 925                                 if (err)
 926                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 927                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 928                         }
 929                         break;
 930
 931                 case MLX4_STEERING_MODE_A0:
 932                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 933                                                      priv->port,
 934                                                      priv->base_qpn,
 935                                                      1);
 936                         if (err)
 937                                 en_err(priv, "Failed enabling promiscuous mode\n");
 938                         break;
 939                 }
 940
 941                 /* Disable port multicast filter (unconditionally) */
 942                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 943                                           0, MLX4_MCAST_DISABLE);
 944                 if (err)
 945                         en_err(priv, "Failed disabling multicast filter\n");
 946
 947                 /* Disable port VLAN filter */
 948                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 949                 if (err)
 950                         en_err(priv, "Failed disabling VLAN filter\n");
 951         }
 952 }
 953
 954 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 955                                        struct mlx4_en_dev *mdev)
 956 {
 957         int err = 0;
 958
 959         if (netif_msg_rx_status(priv))
 960                 en_warn(priv, "Leaving promiscuous mode\n");
 961         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 962
 963         /* Disable promiscouos mode */
 964         switch (mdev->dev->caps.steering_mode) {
 965         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 966                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 967                                                      priv->port,
 968                                                      MLX4_FS_ALL_DEFAULT);
 969                 if (err)
 970                         en_err(priv, "Failed disabling promiscuous mode\n");
 971                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 972                 break;
 973
 974         case MLX4_STEERING_MODE_B0:
 975                 err = mlx4_unicast_promisc_remove(mdev->dev,
 976                                                   priv->base_qpn,
 977                                                   priv->port);
 978                 if (err)
 979                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 980                 /* Disable Multicast promisc */
 981                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 982                         err = mlx4_multicast_promisc_remove(mdev->dev,
 983                                                             priv->base_qpn,
 984                                                             priv->port);
 985                         if (err)
 986                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 987                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 988                 }
 989                 break;
 990
 991         case MLX4_STEERING_MODE_A0:
 992                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 993                                              priv->port,
 994                                              priv->base_qpn, 0);
 995                 if (err)
 996                         en_err(priv, "Failed disabling promiscuous mode\n");
 997                 break;
 998         }
 999
1000         /* Enable port VLAN filter */
1001         err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
1002         if (err)
1003                 en_err(priv, "Failed enabling VLAN filter\n");
1004 }
1005
1006 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
1007                                  struct net_device *dev,
1008                                  struct mlx4_en_dev *mdev)
1009 {
1010         struct mlx4_en_mc_list *mclist, *tmp;
1011         u64 mcast_addr = 0;
1012         u8 mc_list[16] = {0};
1013         int err = 0;
1014
1015         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
1016         if (dev->flags & IFF_ALLMULTI) {
1017                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1018                                           0, MLX4_MCAST_DISABLE);
1019                 if (err)
1020                         en_err(priv, "Failed disabling multicast filter\n");
1021
1022                 /* Add the default qp number as multicast promisc */
1023                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
1024                         switch (mdev->dev->caps.steering_mode) {
1025                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1026                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
1027                                                                   priv->port,
1028                                                                   priv->base_qpn,
1029                                                                   MLX4_FS_MC_DEFAULT);
1030                                 break;
1031
1032                         case MLX4_STEERING_MODE_B0:
1033                                 err = mlx4_multicast_promisc_add(mdev->dev,
1034                                                                  priv->base_qpn,
1035                                                                  priv->port);
1036                                 break;
1037
1038                         case MLX4_STEERING_MODE_A0:
1039                                 break;
1040                         }
1041                         if (err)
1042                                 en_err(priv, "Failed entering multicast promisc mode\n");
1043                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1044                 }
1045         } else {
1046                 /* Disable Multicast promisc */
1047                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1048                         switch (mdev->dev->caps.steering_mode) {
1049                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1050                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
1051                                                                      priv->port,
1052                                                                      MLX4_FS_MC_DEFAULT);
1053                                 break;
1054
1055                         case MLX4_STEERING_MODE_B0:
1056                                 err = mlx4_multicast_promisc_remove(mdev->dev,
1057                                                                     priv->base_qpn,
1058                                                                     priv->port);
1059                                 break;
1060
1061                         case MLX4_STEERING_MODE_A0:
1062                                 break;
1063                         }
1064                         if (err)
1065                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1066                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1067                 }
1068
1069                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1070                                           0, MLX4_MCAST_DISABLE);
1071                 if (err)
1072                         en_err(priv, "Failed disabling multicast filter\n");
1073
1074                 /* Flush mcast filter and init it with broadcast address */
1075                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1076                                     1, MLX4_MCAST_CONFIG);
1077
1078                 /* Update multicast list - we cache all addresses so they won't
1079                  * change while HW is updated holding the command semaphor */
1080                 netif_addr_lock_bh(dev);
1081                 mlx4_en_cache_mclist(dev);
1082                 netif_addr_unlock_bh(dev);
1083                 list_for_each_entry(mclist, &priv->mc_list, list) {
1084                         mcast_addr = mlx4_en_mac_to_u64(mclist->addr);
1085                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1086                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
1087                 }
1088                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1089                                           0, MLX4_MCAST_ENABLE);
1090                 if (err)
1091                         en_err(priv, "Failed enabling multicast filter\n");
1092
1093                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1094                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1095                         if (mclist->action == MCLIST_REM) {
1096                                 /* detach this address and delete from list */
1097                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1098                                 mc_list[5] = priv->port;
1099                                 err = mlx4_multicast_detach(mdev->dev,
1100                                                             &priv->rss_map.indir_qp,
1101                                                             mc_list,
1102                                                             MLX4_PROT_ETH,
1103                                                             mclist->reg_id);
1104                                 if (err)
1105                                         en_err(priv, "Fail to detach multicast address\n");
1106
1107                                 if (mclist->tunnel_reg_id) {
1108                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1109                                         if (err)
1110                                                 en_err(priv, "Failed to detach multicast address\n");
1111                                 }
1112
1113                                 /* remove from list */
1114                                 list_del(&mclist->list);
1115                                 kfree(mclist);
1116                         } else if (mclist->action == MCLIST_ADD) {
1117                                 /* attach the address */
1118                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1119                                 /* needed for B0 steering support */
1120                                 mc_list[5] = priv->port;
1121                                 err = mlx4_multicast_attach(mdev->dev,
1122                                                             &priv->rss_map.indir_qp,
1123                                                             mc_list,
1124                                                             priv->port, 0,
1125                                                             MLX4_PROT_ETH,
1126                                                             &mclist->reg_id);
1127                                 if (err)
1128                                         en_err(priv, "Fail to attach multicast address\n");
1129
1130                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1131                                                                &mclist->tunnel_reg_id);
1132                                 if (err)
1133                                         en_err(priv, "Failed to attach multicast address\n");
1134                         }
1135                 }
1136         }
1137 }
1138
1139 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1140                                  struct net_device *dev,
1141                                  struct mlx4_en_dev *mdev)
1142 {
1143         struct netdev_hw_addr *ha;
1144         struct mlx4_mac_entry *entry;
1145         struct hlist_node *tmp;
1146         bool found;
1147         u64 mac;
1148         int err = 0;
1149         struct hlist_head *bucket;
1150         unsigned int i;
1151         int removed = 0;
1152         u32 prev_flags;
1153
1154         /* Note that we do not need to protect our mac_hash traversal with rcu,
1155          * since all modification code is protected by mdev->state_lock
1156          */
1157
1158         /* find what to remove */
1159         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1160                 bucket = &priv->mac_hash[i];
1161                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1162                         found = false;
1163                         netdev_for_each_uc_addr(ha, dev) {
1164                                 if (ether_addr_equal_64bits(entry->mac,
1165                                                             ha->addr)) {
1166                                         found = true;
1167                                         break;
1168                                 }
1169                         }
1170
1171                         /* MAC address of the port is not in uc list */
1172                         if (ether_addr_equal_64bits(entry->mac, dev->dev_addr))
1173                                 found = true;
1174
1175                         if (!found) {
1176                                 mac = mlx4_en_mac_to_u64(entry->mac);
1177                                 mlx4_en_uc_steer_release(priv, entry->mac,
1178                                                          priv->base_qpn,
1179                                                          entry->reg_id);
1180                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1181
1182                                 hlist_del_rcu(&entry->hlist);
1183                                 kfree_rcu(entry, rcu);
1184                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1185                                        entry->mac, priv->port);
1186                                 ++removed;
1187                         }
1188                 }
1189         }
1190
1191         /* if we didn't remove anything, there is no use in trying to add
1192          * again once we are in a forced promisc mode state
1193          */
1194         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1195                 return;
1196
1197         prev_flags = priv->flags;
1198         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1199
1200         /* find what to add */
1201         netdev_for_each_uc_addr(ha, dev) {
1202                 found = false;
1203                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1204                 hlist_for_each_entry(entry, bucket, hlist) {
1205                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1206                                 found = true;
1207                                 break;
1208                         }
1209                 }
1210
1211                 if (!found) {
1212                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1213                         if (!entry) {
1214                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1215                                        ha->addr, priv->port);
1216                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1217                                 break;
1218                         }
1219                         mac = mlx4_en_mac_to_u64(ha->addr);
1220                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1221                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1222                         if (err < 0) {
1223                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1224                                        ha->addr, priv->port, err);
1225                                 kfree(entry);
1226                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1227                                 break;
1228                         }
1229                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1230                                                    &priv->base_qpn,
1231                                                    &entry->reg_id);
1232                         if (err) {
1233                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1234                                        ha->addr, priv->port, err);
1235                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1236                                 kfree(entry);
1237                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1238                                 break;
1239                         } else {
1240                                 unsigned int mac_hash;
1241                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1242                                        ha->addr, priv->port);
1243                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1244                                 bucket = &priv->mac_hash[mac_hash];
1245                                 hlist_add_head_rcu(&entry->hlist, bucket);
1246                         }
1247                 }
1248         }
1249
1250         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1251                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1252                         priv->port);
1253         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1254                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1255                         priv->port);
1256         }
1257 }
1258
1259 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1260 {
1261         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1262                                                  rx_mode_task);
1263         struct mlx4_en_dev *mdev = priv->mdev;
1264         struct net_device *dev = priv->dev;
1265
1266         mutex_lock(&mdev->state_lock);
1267         if (!mdev->device_up) {
1268                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1269                 goto out;
1270         }
1271         if (!priv->port_up) {
1272                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1273                 goto out;
1274         }
1275
1276         if (!netif_carrier_ok(dev)) {
1277                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1278                         if (priv->port_state.link_state) {
1279                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1280                                 netif_carrier_on(dev);
1281                                 en_dbg(LINK, priv, "Link Up\n");
1282                         }
1283                 }
1284         }
1285
1286         if (dev->priv_flags & IFF_UNICAST_FLT)
1287                 mlx4_en_do_uc_filter(priv, dev, mdev);
1288
1289         /* Promsicuous mode: disable all filters */
1290         if ((dev->flags & IFF_PROMISC) ||
1291             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1292                 mlx4_en_set_promisc_mode(priv, mdev);
1293                 goto out;
1294         }
1295
1296         /* Not in promiscuous mode */
1297         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1298                 mlx4_en_clear_promisc_mode(priv, mdev);
1299
1300         mlx4_en_do_multicast(priv, dev, mdev);
1301 out:
1302         mutex_unlock(&mdev->state_lock);
1303 }
1304
1305 #ifdef CONFIG_NET_POLL_CONTROLLER
1306 static void mlx4_en_netpoll(struct net_device *dev)
1307 {
1308         struct mlx4_en_priv *priv = netdev_priv(dev);
1309         struct mlx4_en_cq *cq;
1310         unsigned long flags;
1311         int i;
1312
1313         for (i = 0; i < priv->rx_ring_num; i++) {
1314                 cq = priv->rx_cq[i];
1315                 spin_lock_irqsave(&cq->lock, flags);
1316                 napi_synchronize(&cq->napi);
1317                 mlx4_en_process_rx_cq(dev, cq, 0);
1318                 spin_unlock_irqrestore(&cq->lock, flags);
1319         }
1320 }
1321 #endif
1322
1323 static void mlx4_en_tx_timeout(struct net_device *dev)
1324 {
1325         struct mlx4_en_priv *priv = netdev_priv(dev);
1326         struct mlx4_en_dev *mdev = priv->mdev;
1327         int i;
1328
1329         if (netif_msg_timer(priv))
1330                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1331
1332         for (i = 0; i < priv->tx_ring_num; i++) {
1333                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1334                         continue;
1335                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1336                         i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1337                         priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1338         }
1339
1340         priv->port_stats.tx_timeout++;
1341         en_dbg(DRV, priv, "Scheduling watchdog\n");
1342         queue_work(mdev->workqueue, &priv->watchdog_task);
1343 }
1344
1345
1346 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1347 {
1348         struct mlx4_en_priv *priv = netdev_priv(dev);
1349
1350         spin_lock_bh(&priv->stats_lock);
1351         memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1352         spin_unlock_bh(&priv->stats_lock);
1353
1354         return &priv->ret_stats;
1355 }
1356
1357 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1358 {
1359         struct mlx4_en_cq *cq;
1360         int i;
1361
1362         /* If we haven't received a specific coalescing setting
1363          * (module param), we set the moderation parameters as follows:
1364          * - moder_cnt is set to the number of mtu sized packets to
1365          *   satisfy our coalescing target.
1366          * - moder_time is set to a fixed value.
1367          */
1368         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1369         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1370         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1371         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1372         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1373                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1374
1375         /* Setup cq moderation params */
1376         for (i = 0; i < priv->rx_ring_num; i++) {
1377                 cq = priv->rx_cq[i];
1378                 cq->moder_cnt = priv->rx_frames;
1379                 cq->moder_time = priv->rx_usecs;
1380                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1381                 priv->last_moder_packets[i] = 0;
1382                 priv->last_moder_bytes[i] = 0;
1383         }
1384
1385         for (i = 0; i < priv->tx_ring_num; i++) {
1386                 cq = priv->tx_cq[i];
1387                 cq->moder_cnt = priv->tx_frames;
1388                 cq->moder_time = priv->tx_usecs;
1389         }
1390
1391         /* Reset auto-moderation params */
1392         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1393         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1394         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1395         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1396         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1397         priv->adaptive_rx_coal = 1;
1398         priv->last_moder_jiffies = 0;
1399         priv->last_moder_tx_packets = 0;
1400 }
1401
1402 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1403 {
1404         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1405         struct mlx4_en_cq *cq;
1406         unsigned long packets;
1407         unsigned long rate;
1408         unsigned long avg_pkt_size;
1409         unsigned long rx_packets;
1410         unsigned long rx_bytes;
1411         unsigned long rx_pkt_diff;
1412         int moder_time;
1413         int ring, err;
1414
1415         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1416                 return;
1417
1418         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1419                 spin_lock_bh(&priv->stats_lock);
1420                 rx_packets = priv->rx_ring[ring]->packets;
1421                 rx_bytes = priv->rx_ring[ring]->bytes;
1422                 spin_unlock_bh(&priv->stats_lock);
1423
1424                 rx_pkt_diff = ((unsigned long) (rx_packets -
1425                                 priv->last_moder_packets[ring]));
1426                 packets = rx_pkt_diff;
1427                 rate = packets * HZ / period;
1428                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1429                                 priv->last_moder_bytes[ring])) / packets : 0;
1430
1431                 /* Apply auto-moderation only when packet rate
1432                  * exceeds a rate that it matters */
1433                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1434                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1435                         if (rate < priv->pkt_rate_low)
1436                                 moder_time = priv->rx_usecs_low;
1437                         else if (rate > priv->pkt_rate_high)
1438                                 moder_time = priv->rx_usecs_high;
1439                         else
1440                                 moder_time = (rate - priv->pkt_rate_low) *
1441                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1442                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1443                                         priv->rx_usecs_low;
1444                 } else {
1445                         moder_time = priv->rx_usecs_low;
1446                 }
1447
1448                 if (moder_time != priv->last_moder_time[ring]) {
1449                         priv->last_moder_time[ring] = moder_time;
1450                         cq = priv->rx_cq[ring];
1451                         cq->moder_time = moder_time;
1452                         cq->moder_cnt = priv->rx_frames;
1453                         err = mlx4_en_set_cq_moder(priv, cq);
1454                         if (err)
1455                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1456                                        ring);
1457                 }
1458                 priv->last_moder_packets[ring] = rx_packets;
1459                 priv->last_moder_bytes[ring] = rx_bytes;
1460         }
1461
1462         priv->last_moder_jiffies = jiffies;
1463 }
1464
1465 static void mlx4_en_do_get_stats(struct work_struct *work)
1466 {
1467         struct delayed_work *delay = to_delayed_work(work);
1468         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1469                                                  stats_task);
1470         struct mlx4_en_dev *mdev = priv->mdev;
1471         int err;
1472
1473         mutex_lock(&mdev->state_lock);
1474         if (mdev->device_up) {
1475                 if (priv->port_up) {
1476                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1477                         if (err)
1478                                 en_dbg(HW, priv, "Could not update stats\n");
1479
1480                         mlx4_en_auto_moderation(priv);
1481                 }
1482
1483                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1484         }
1485         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1486                 mlx4_en_do_set_mac(priv);
1487                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1488         }
1489         mutex_unlock(&mdev->state_lock);
1490 }
1491
1492 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1493  * periodically
1494  */
1495 static void mlx4_en_service_task(struct work_struct *work)
1496 {
1497         struct delayed_work *delay = to_delayed_work(work);
1498         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1499                                                  service_task);
1500         struct mlx4_en_dev *mdev = priv->mdev;
1501
1502         mutex_lock(&mdev->state_lock);
1503         if (mdev->device_up) {
1504                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1505                         mlx4_en_ptp_overflow_check(mdev);
1506
1507                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1508                                    SERVICE_TASK_DELAY);
1509         }
1510         mutex_unlock(&mdev->state_lock);
1511 }
1512
1513 static void mlx4_en_linkstate(struct work_struct *work)
1514 {
1515         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1516                                                  linkstate_task);
1517         struct mlx4_en_dev *mdev = priv->mdev;
1518         int linkstate = priv->link_state;
1519
1520         mutex_lock(&mdev->state_lock);
1521         /* If observable port state changed set carrier state and
1522          * report to system log */
1523         if (priv->last_link_state != linkstate) {
1524                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1525                         en_info(priv, "Link Down\n");
1526                         netif_carrier_off(priv->dev);
1527                 } else {
1528                         en_info(priv, "Link Up\n");
1529                         netif_carrier_on(priv->dev);
1530                 }
1531         }
1532         priv->last_link_state = linkstate;
1533         mutex_unlock(&mdev->state_lock);
1534 }
1535
1536
1537 int mlx4_en_start_port(struct net_device *dev)
1538 {
1539         struct mlx4_en_priv *priv = netdev_priv(dev);
1540         struct mlx4_en_dev *mdev = priv->mdev;
1541         struct mlx4_en_cq *cq;
1542         struct mlx4_en_tx_ring *tx_ring;
1543         int rx_index = 0;
1544         int tx_index = 0;
1545         int err = 0;
1546         int i;
1547         int j;
1548         u8 mc_list[16] = {0};
1549
1550         if (priv->port_up) {
1551                 en_dbg(DRV, priv, "start port called while port already up\n");
1552                 return 0;
1553         }
1554
1555         INIT_LIST_HEAD(&priv->mc_list);
1556         INIT_LIST_HEAD(&priv->curr_list);
1557         INIT_LIST_HEAD(&priv->ethtool_list);
1558         memset(&priv->ethtool_rules[0], 0,
1559                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1560
1561         /* Calculate Rx buf size */
1562         dev->mtu = min(dev->mtu, priv->max_mtu);
1563         mlx4_en_calc_rx_buf(dev);
1564         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1565
1566         /* Configure rx cq's and rings */
1567         err = mlx4_en_activate_rx_rings(priv);
1568         if (err) {
1569                 en_err(priv, "Failed to activate RX rings\n");
1570                 return err;
1571         }
1572         for (i = 0; i < priv->rx_ring_num; i++) {
1573                 cq = priv->rx_cq[i];
1574
1575                 mlx4_en_cq_init_lock(cq);
1576
1577                 err = mlx4_en_activate_cq(priv, cq, i);
1578                 if (err) {
1579                         en_err(priv, "Failed activating Rx CQ\n");
1580                         goto cq_err;
1581                 }
1582                 for (j = 0; j < cq->size; j++)
1583                         cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1584                 err = mlx4_en_set_cq_moder(priv, cq);
1585                 if (err) {
1586                         en_err(priv, "Failed setting cq moderation parameters");
1587                         mlx4_en_deactivate_cq(priv, cq);
1588                         goto cq_err;
1589                 }
1590                 mlx4_en_arm_cq(priv, cq);
1591                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1592                 ++rx_index;
1593         }
1594
1595         /* Set qp number */
1596         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1597         err = mlx4_en_get_qp(priv);
1598         if (err) {
1599                 en_err(priv, "Failed getting eth qp\n");
1600                 goto cq_err;
1601         }
1602         mdev->mac_removed[priv->port] = 0;
1603
1604         err = mlx4_en_config_rss_steer(priv);
1605         if (err) {
1606                 en_err(priv, "Failed configuring rss steering\n");
1607                 goto mac_err;
1608         }
1609
1610         err = mlx4_en_create_drop_qp(priv);
1611         if (err)
1612                 goto rss_err;
1613
1614         /* Configure tx cq's and rings */
1615         for (i = 0; i < priv->tx_ring_num; i++) {
1616                 /* Configure cq */
1617                 cq = priv->tx_cq[i];
1618                 err = mlx4_en_activate_cq(priv, cq, i);
1619                 if (err) {
1620                         en_err(priv, "Failed allocating Tx CQ\n");
1621                         goto tx_err;
1622                 }
1623                 err = mlx4_en_set_cq_moder(priv, cq);
1624                 if (err) {
1625                         en_err(priv, "Failed setting cq moderation parameters");
1626                         mlx4_en_deactivate_cq(priv, cq);
1627                         goto tx_err;
1628                 }
1629                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1630                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1631
1632                 /* Configure ring */
1633                 tx_ring = priv->tx_ring[i];
1634                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1635                         i / priv->num_tx_rings_p_up);
1636                 if (err) {
1637                         en_err(priv, "Failed allocating Tx ring\n");
1638                         mlx4_en_deactivate_cq(priv, cq);
1639                         goto tx_err;
1640                 }
1641                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1642
1643                 /* Arm CQ for TX completions */
1644                 mlx4_en_arm_cq(priv, cq);
1645
1646                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1647                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1648                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1649                 ++tx_index;
1650         }
1651
1652         /* Configure port */
1653         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1654                                     priv->rx_skb_size + ETH_FCS_LEN,
1655                                     priv->prof->tx_pause,
1656                                     priv->prof->tx_ppp,
1657                                     priv->prof->rx_pause,
1658                                     priv->prof->rx_ppp);
1659         if (err) {
1660                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1661                        priv->port, err);
1662                 goto tx_err;
1663         }
1664         /* Set default qp number */
1665         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1666         if (err) {
1667                 en_err(priv, "Failed setting default qp numbers\n");
1668                 goto tx_err;
1669         }
1670
1671         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1672                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC);
1673                 if (err) {
1674                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1675                                err);
1676                         goto tx_err;
1677                 }
1678         }
1679
1680         /* Init port */
1681         en_dbg(HW, priv, "Initializing port\n");
1682         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1683         if (err) {
1684                 en_err(priv, "Failed Initializing port\n");
1685                 goto tx_err;
1686         }
1687
1688         /* Attach rx QP to bradcast address */
1689         memset(&mc_list[10], 0xff, ETH_ALEN);
1690         mc_list[5] = priv->port; /* needed for B0 steering support */
1691         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1692                                   priv->port, 0, MLX4_PROT_ETH,
1693                                   &priv->broadcast_id))
1694                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1695
1696         /* Must redo promiscuous mode setup. */
1697         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1698
1699         /* Schedule multicast task to populate multicast list */
1700         queue_work(mdev->workqueue, &priv->rx_mode_task);
1701
1702         mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1703
1704         priv->port_up = true;
1705         netif_tx_start_all_queues(dev);
1706         netif_device_attach(dev);
1707
1708         return 0;
1709
1710 tx_err:
1711         while (tx_index--) {
1712                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1713                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1714         }
1715         mlx4_en_destroy_drop_qp(priv);
1716 rss_err:
1717         mlx4_en_release_rss_steer(priv);
1718 mac_err:
1719         mlx4_en_put_qp(priv);
1720 cq_err:
1721         while (rx_index--)
1722                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1723         for (i = 0; i < priv->rx_ring_num; i++)
1724                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1725
1726         return err; /* need to close devices */
1727 }
1728
1729
1730 void mlx4_en_stop_port(struct net_device *dev, int detach)
1731 {
1732         struct mlx4_en_priv *priv = netdev_priv(dev);
1733         struct mlx4_en_dev *mdev = priv->mdev;
1734         struct mlx4_en_mc_list *mclist, *tmp;
1735         struct ethtool_flow_id *flow, *tmp_flow;
1736         int i;
1737         u8 mc_list[16] = {0};
1738
1739         if (!priv->port_up) {
1740                 en_dbg(DRV, priv, "stop port called while port already down\n");
1741                 return;
1742         }
1743
1744         /* close port*/
1745         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1746
1747         /* Synchronize with tx routine */
1748         netif_tx_lock_bh(dev);
1749         if (detach)
1750                 netif_device_detach(dev);
1751         netif_tx_stop_all_queues(dev);
1752         netif_tx_unlock_bh(dev);
1753
1754         netif_tx_disable(dev);
1755
1756         /* Set port as not active */
1757         priv->port_up = false;
1758
1759         /* Promsicuous mode */
1760         if (mdev->dev->caps.steering_mode ==
1761             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1762                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1763                                  MLX4_EN_FLAG_MC_PROMISC);
1764                 mlx4_flow_steer_promisc_remove(mdev->dev,
1765                                                priv->port,
1766                                                MLX4_FS_ALL_DEFAULT);
1767                 mlx4_flow_steer_promisc_remove(mdev->dev,
1768                                                priv->port,
1769                                                MLX4_FS_MC_DEFAULT);
1770         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1771                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1772
1773                 /* Disable promiscouos mode */
1774                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1775                                             priv->port);
1776
1777                 /* Disable Multicast promisc */
1778                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1779                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1780                                                       priv->port);
1781                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1782                 }
1783         }
1784
1785         /* Detach All multicasts */
1786         memset(&mc_list[10], 0xff, ETH_ALEN);
1787         mc_list[5] = priv->port; /* needed for B0 steering support */
1788         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1789                               MLX4_PROT_ETH, priv->broadcast_id);
1790         list_for_each_entry(mclist, &priv->curr_list, list) {
1791                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1792                 mc_list[5] = priv->port;
1793                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1794                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1795         }
1796         mlx4_en_clear_list(dev);
1797         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1798                 list_del(&mclist->list);
1799                 kfree(mclist);
1800         }
1801
1802         /* Flush multicast filter */
1803         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1804
1805         /* Remove flow steering rules for the port*/
1806         if (mdev->dev->caps.steering_mode ==
1807             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1808                 ASSERT_RTNL();
1809                 list_for_each_entry_safe(flow, tmp_flow,
1810                                          &priv->ethtool_list, list) {
1811                         mlx4_flow_detach(mdev->dev, flow->id);
1812                         list_del(&flow->list);
1813                 }
1814         }
1815
1816         mlx4_en_destroy_drop_qp(priv);
1817
1818         /* Free TX Rings */
1819         for (i = 0; i < priv->tx_ring_num; i++) {
1820                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1821                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1822         }
1823         msleep(10);
1824
1825         for (i = 0; i < priv->tx_ring_num; i++)
1826                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1827
1828         /* Free RSS qps */
1829         mlx4_en_release_rss_steer(priv);
1830
1831         /* Unregister Mac address for the port */
1832         mlx4_en_put_qp(priv);
1833         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1834                 mdev->mac_removed[priv->port] = 1;
1835
1836         /* Free RX Rings */
1837         for (i = 0; i < priv->rx_ring_num; i++) {
1838                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1839
1840                 local_bh_disable();
1841                 while (!mlx4_en_cq_lock_napi(cq)) {
1842                         pr_info("CQ %d locked\n", i);
1843                         mdelay(1);
1844                 }
1845                 local_bh_enable();
1846
1847                 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state))
1848                         msleep(1);
1849                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1850                 mlx4_en_deactivate_cq(priv, cq);
1851         }
1852 }
1853
1854 static void mlx4_en_restart(struct work_struct *work)
1855 {
1856         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1857                                                  watchdog_task);
1858         struct mlx4_en_dev *mdev = priv->mdev;
1859         struct net_device *dev = priv->dev;
1860
1861         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1862
1863         mutex_lock(&mdev->state_lock);
1864         if (priv->port_up) {
1865                 mlx4_en_stop_port(dev, 1);
1866                 if (mlx4_en_start_port(dev))
1867                         en_err(priv, "Failed restarting port %d\n", priv->port);
1868         }
1869         mutex_unlock(&mdev->state_lock);
1870 }
1871
1872 static void mlx4_en_clear_stats(struct net_device *dev)
1873 {
1874         struct mlx4_en_priv *priv = netdev_priv(dev);
1875         struct mlx4_en_dev *mdev = priv->mdev;
1876         int i;
1877
1878         if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1879                 en_dbg(HW, priv, "Failed dumping statistics\n");
1880
1881         memset(&priv->stats, 0, sizeof(priv->stats));
1882         memset(&priv->pstats, 0, sizeof(priv->pstats));
1883         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1884         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1885
1886         for (i = 0; i < priv->tx_ring_num; i++) {
1887                 priv->tx_ring[i]->bytes = 0;
1888                 priv->tx_ring[i]->packets = 0;
1889                 priv->tx_ring[i]->tx_csum = 0;
1890         }
1891         for (i = 0; i < priv->rx_ring_num; i++) {
1892                 priv->rx_ring[i]->bytes = 0;
1893                 priv->rx_ring[i]->packets = 0;
1894                 priv->rx_ring[i]->csum_ok = 0;
1895                 priv->rx_ring[i]->csum_none = 0;
1896         }
1897 }
1898
1899 static int mlx4_en_open(struct net_device *dev)
1900 {
1901         struct mlx4_en_priv *priv = netdev_priv(dev);
1902         struct mlx4_en_dev *mdev = priv->mdev;
1903         int err = 0;
1904
1905         mutex_lock(&mdev->state_lock);
1906
1907         if (!mdev->device_up) {
1908                 en_err(priv, "Cannot open - device down/disabled\n");
1909                 err = -EBUSY;
1910                 goto out;
1911         }
1912
1913         /* Reset HW statistics and SW counters */
1914         mlx4_en_clear_stats(dev);
1915
1916         err = mlx4_en_start_port(dev);
1917         if (err)
1918                 en_err(priv, "Failed starting port:%d\n", priv->port);
1919
1920 out:
1921         mutex_unlock(&mdev->state_lock);
1922         return err;
1923 }
1924
1925
1926 static int mlx4_en_close(struct net_device *dev)
1927 {
1928         struct mlx4_en_priv *priv = netdev_priv(dev);
1929         struct mlx4_en_dev *mdev = priv->mdev;
1930
1931         en_dbg(IFDOWN, priv, "Close port called\n");
1932
1933         mutex_lock(&mdev->state_lock);
1934
1935         mlx4_en_stop_port(dev, 0);
1936         netif_carrier_off(dev);
1937
1938         mutex_unlock(&mdev->state_lock);
1939         return 0;
1940 }
1941
1942 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1943 {
1944         int i;
1945
1946 #ifdef CONFIG_RFS_ACCEL
1947         free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1948         priv->dev->rx_cpu_rmap = NULL;
1949 #endif
1950
1951         for (i = 0; i < priv->tx_ring_num; i++) {
1952                 if (priv->tx_ring && priv->tx_ring[i])
1953                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1954                 if (priv->tx_cq && priv->tx_cq[i])
1955                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1956         }
1957
1958         for (i = 0; i < priv->rx_ring_num; i++) {
1959                 if (priv->rx_ring[i])
1960                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1961                                 priv->prof->rx_ring_size, priv->stride);
1962                 if (priv->rx_cq[i])
1963                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1964         }
1965
1966         if (priv->base_tx_qpn) {
1967                 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1968                 priv->base_tx_qpn = 0;
1969         }
1970 }
1971
1972 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1973 {
1974         struct mlx4_en_port_profile *prof = priv->prof;
1975         int i;
1976         int err;
1977         int node;
1978
1979         err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn);
1980         if (err) {
1981                 en_err(priv, "failed reserving range for TX rings\n");
1982                 return err;
1983         }
1984
1985         /* Create tx Rings */
1986         for (i = 0; i < priv->tx_ring_num; i++) {
1987                 node = cpu_to_node(i % num_online_cpus());
1988                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1989                                       prof->tx_ring_size, i, TX, node))
1990                         goto err;
1991
1992                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1993                                            priv->base_tx_qpn + i,
1994                                            prof->tx_ring_size, TXBB_SIZE,
1995                                            node, i))
1996                         goto err;
1997         }
1998
1999         /* Create rx Rings */
2000         for (i = 0; i < priv->rx_ring_num; i++) {
2001                 node = cpu_to_node(i % num_online_cpus());
2002                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2003                                       prof->rx_ring_size, i, RX, node))
2004                         goto err;
2005
2006                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2007                                            prof->rx_ring_size, priv->stride,
2008                                            node))
2009                         goto err;
2010         }
2011
2012 #ifdef CONFIG_RFS_ACCEL
2013         if (priv->mdev->dev->caps.comp_pool) {
2014                 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
2015                 if (!priv->dev->rx_cpu_rmap)
2016                         goto err;
2017         }
2018 #endif
2019
2020         return 0;
2021
2022 err:
2023         en_err(priv, "Failed to allocate NIC resources\n");
2024         for (i = 0; i < priv->rx_ring_num; i++) {
2025                 if (priv->rx_ring[i])
2026                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2027                                                 prof->rx_ring_size,
2028                                                 priv->stride);
2029                 if (priv->rx_cq[i])
2030                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2031         }
2032         for (i = 0; i < priv->tx_ring_num; i++) {
2033                 if (priv->tx_ring[i])
2034                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2035                 if (priv->tx_cq[i])
2036                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2037         }
2038         return -ENOMEM;
2039 }
2040
2041
2042 void mlx4_en_destroy_netdev(struct net_device *dev)
2043 {
2044         struct mlx4_en_priv *priv = netdev_priv(dev);
2045         struct mlx4_en_dev *mdev = priv->mdev;
2046
2047         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2048
2049         /* Unregister device - this will close the port if it was up */
2050         if (priv->registered)
2051                 unregister_netdev(dev);
2052
2053         if (priv->allocated)
2054                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2055
2056         cancel_delayed_work(&priv->stats_task);
2057         cancel_delayed_work(&priv->service_task);
2058         /* flush any pending task for this netdev */
2059         flush_workqueue(mdev->workqueue);
2060
2061         /* Detach the netdev so tasks would not attempt to access it */
2062         mutex_lock(&mdev->state_lock);
2063         mdev->pndev[priv->port] = NULL;
2064         mutex_unlock(&mdev->state_lock);
2065
2066         mlx4_en_free_resources(priv);
2067
2068         kfree(priv->tx_ring);
2069         kfree(priv->tx_cq);
2070
2071         free_netdev(dev);
2072 }
2073
2074 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2075 {
2076         struct mlx4_en_priv *priv = netdev_priv(dev);
2077         struct mlx4_en_dev *mdev = priv->mdev;
2078         int err = 0;
2079
2080         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2081                  dev->mtu, new_mtu);
2082
2083         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2084                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2085                 return -EPERM;
2086         }
2087         dev->mtu = new_mtu;
2088
2089         if (netif_running(dev)) {
2090                 mutex_lock(&mdev->state_lock);
2091                 if (!mdev->device_up) {
2092                         /* NIC is probably restarting - let watchdog task reset
2093                          * the port */
2094                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2095                 } else {
2096                         mlx4_en_stop_port(dev, 1);
2097                         err = mlx4_en_start_port(dev);
2098                         if (err) {
2099                                 en_err(priv, "Failed restarting port:%d\n",
2100                                          priv->port);
2101                                 queue_work(mdev->workqueue, &priv->watchdog_task);
2102                         }
2103                 }
2104                 mutex_unlock(&mdev->state_lock);
2105         }
2106         return 0;
2107 }
2108
2109 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2110 {
2111         struct mlx4_en_priv *priv = netdev_priv(dev);
2112         struct mlx4_en_dev *mdev = priv->mdev;
2113         struct hwtstamp_config config;
2114
2115         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2116                 return -EFAULT;
2117
2118         /* reserved for future extensions */
2119         if (config.flags)
2120                 return -EINVAL;
2121
2122         /* device doesn't support time stamping */
2123         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2124                 return -EINVAL;
2125
2126         /* TX HW timestamp */
2127         switch (config.tx_type) {
2128         case HWTSTAMP_TX_OFF:
2129         case HWTSTAMP_TX_ON:
2130                 break;
2131         default:
2132                 return -ERANGE;
2133         }
2134
2135         /* RX HW timestamp */
2136         switch (config.rx_filter) {
2137         case HWTSTAMP_FILTER_NONE:
2138                 break;
2139         case HWTSTAMP_FILTER_ALL:
2140         case HWTSTAMP_FILTER_SOME:
2141         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2142         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2143         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2144         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2145         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2146         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2147         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2148         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2149         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2150         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2151         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2152         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2153                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2154                 break;
2155         default:
2156                 return -ERANGE;
2157         }
2158
2159         if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) {
2160                 config.tx_type = HWTSTAMP_TX_OFF;
2161                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2162         }
2163
2164         return copy_to_user(ifr->ifr_data, &config,
2165                             sizeof(config)) ? -EFAULT : 0;
2166 }
2167
2168 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2169 {
2170         struct mlx4_en_priv *priv = netdev_priv(dev);
2171
2172         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2173                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2174 }
2175
2176 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2177 {
2178         switch (cmd) {
2179         case SIOCSHWTSTAMP:
2180                 return mlx4_en_hwtstamp_set(dev, ifr);
2181         case SIOCGHWTSTAMP:
2182                 return mlx4_en_hwtstamp_get(dev, ifr);
2183         default:
2184                 return -EOPNOTSUPP;
2185         }
2186 }
2187
2188 static int mlx4_en_set_features(struct net_device *netdev,
2189                 netdev_features_t features)
2190 {
2191         struct mlx4_en_priv *priv = netdev_priv(netdev);
2192
2193         if (features & NETIF_F_LOOPBACK)
2194                 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2195         else
2196                 priv->ctrl_flags &=
2197                         cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2198
2199         mlx4_en_update_loopback_state(netdev, features);
2200
2201         return 0;
2202
2203 }
2204
2205 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2206 {
2207         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2208         struct mlx4_en_dev *mdev = en_priv->mdev;
2209         u64 mac_u64 = mlx4_en_mac_to_u64(mac);
2210
2211         if (!is_valid_ether_addr(mac))
2212                 return -EINVAL;
2213
2214         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2215 }
2216
2217 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2218 {
2219         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2220         struct mlx4_en_dev *mdev = en_priv->mdev;
2221
2222         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2223 }
2224
2225 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2226 {
2227         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2228         struct mlx4_en_dev *mdev = en_priv->mdev;
2229
2230         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2231 }
2232
2233 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2234 {
2235         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2236         struct mlx4_en_dev *mdev = en_priv->mdev;
2237
2238         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2239 }
2240
2241 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2242 {
2243         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2244         struct mlx4_en_dev *mdev = en_priv->mdev;
2245
2246         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2247 }
2248
2249 #define PORT_ID_BYTE_LEN 8
2250 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2251                                     struct netdev_phys_port_id *ppid)
2252 {
2253         struct mlx4_en_priv *priv = netdev_priv(dev);
2254         struct mlx4_dev *mdev = priv->mdev->dev;
2255         int i;
2256         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2257
2258         if (!phys_port_id)
2259                 return -EOPNOTSUPP;
2260
2261         ppid->id_len = sizeof(phys_port_id);
2262         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2263                 ppid->id[i] =  phys_port_id & 0xff;
2264                 phys_port_id >>= 8;
2265         }
2266         return 0;
2267 }
2268
2269 static const struct net_device_ops mlx4_netdev_ops = {
2270         .ndo_open               = mlx4_en_open,
2271         .ndo_stop               = mlx4_en_close,
2272         .ndo_start_xmit         = mlx4_en_xmit,
2273         .ndo_select_queue       = mlx4_en_select_queue,
2274         .ndo_get_stats          = mlx4_en_get_stats,
2275         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2276         .ndo_set_mac_address    = mlx4_en_set_mac,
2277         .ndo_validate_addr      = eth_validate_addr,
2278         .ndo_change_mtu         = mlx4_en_change_mtu,
2279         .ndo_do_ioctl           = mlx4_en_ioctl,
2280         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2281         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2282         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2283 #ifdef CONFIG_NET_POLL_CONTROLLER
2284         .ndo_poll_controller    = mlx4_en_netpoll,
2285 #endif
2286         .ndo_set_features       = mlx4_en_set_features,
2287         .ndo_setup_tc           = mlx4_en_setup_tc,
2288 #ifdef CONFIG_RFS_ACCEL
2289         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2290 #endif
2291 #ifdef CONFIG_NET_RX_BUSY_POLL
2292         .ndo_busy_poll          = mlx4_en_low_latency_recv,
2293 #endif
2294         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2295 };
2296
2297 static const struct net_device_ops mlx4_netdev_ops_master = {
2298         .ndo_open               = mlx4_en_open,
2299         .ndo_stop               = mlx4_en_close,
2300         .ndo_start_xmit         = mlx4_en_xmit,
2301         .ndo_select_queue       = mlx4_en_select_queue,
2302         .ndo_get_stats          = mlx4_en_get_stats,
2303         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2304         .ndo_set_mac_address    = mlx4_en_set_mac,
2305         .ndo_validate_addr      = eth_validate_addr,
2306         .ndo_change_mtu         = mlx4_en_change_mtu,
2307         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2308         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2309         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2310         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2311         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2312         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2313         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2314         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2315 #ifdef CONFIG_NET_POLL_CONTROLLER
2316         .ndo_poll_controller    = mlx4_en_netpoll,
2317 #endif
2318         .ndo_set_features       = mlx4_en_set_features,
2319         .ndo_setup_tc           = mlx4_en_setup_tc,
2320 #ifdef CONFIG_RFS_ACCEL
2321         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2322 #endif
2323         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2324 };
2325
2326 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2327                         struct mlx4_en_port_profile *prof)
2328 {
2329         struct net_device *dev;
2330         struct mlx4_en_priv *priv;
2331         int i;
2332         int err;
2333         u64 mac_u64;
2334
2335         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2336                                  MAX_TX_RINGS, MAX_RX_RINGS);
2337         if (dev == NULL)
2338                 return -ENOMEM;
2339
2340         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2341         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2342
2343         SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2344         dev->dev_id =  port - 1;
2345
2346         /*
2347          * Initialize driver private data
2348          */
2349
2350         priv = netdev_priv(dev);
2351         memset(priv, 0, sizeof(struct mlx4_en_priv));
2352         priv->dev = dev;
2353         priv->mdev = mdev;
2354         priv->ddev = &mdev->pdev->dev;
2355         priv->prof = prof;
2356         priv->port = port;
2357         priv->port_up = false;
2358         priv->flags = prof->flags;
2359         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2360                         MLX4_WQE_CTRL_SOLICITED);
2361         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2362         priv->tx_ring_num = prof->tx_ring_num;
2363
2364         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2365                                 GFP_KERNEL);
2366         if (!priv->tx_ring) {
2367                 err = -ENOMEM;
2368                 goto out;
2369         }
2370         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2371                               GFP_KERNEL);
2372         if (!priv->tx_cq) {
2373                 err = -ENOMEM;
2374                 goto out;
2375         }
2376         priv->rx_ring_num = prof->rx_ring_num;
2377         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2378         priv->mac_index = -1;
2379         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2380         spin_lock_init(&priv->stats_lock);
2381         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2382         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2383         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2384         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2385         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2386 #ifdef CONFIG_MLX4_EN_DCB
2387         if (!mlx4_is_slave(priv->mdev->dev)) {
2388                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2389                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2390                 } else {
2391                         en_info(priv, "enabling only PFC DCB ops\n");
2392                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2393                 }
2394         }
2395 #endif
2396
2397         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2398                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2399
2400         /* Query for default mac and max mtu */
2401         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2402
2403         /* Set default MAC */
2404         dev->addr_len = ETH_ALEN;
2405         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2406         if (!is_valid_ether_addr(dev->dev_addr)) {
2407                 if (mlx4_is_slave(priv->mdev->dev)) {
2408                         eth_hw_addr_random(dev);
2409                         en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2410                         mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr);
2411                         mdev->dev->caps.def_mac[priv->port] = mac_u64;
2412                 } else {
2413                         en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2414                                priv->port, dev->dev_addr);
2415                         err = -EINVAL;
2416                         goto out;
2417                 }
2418         }
2419
2420         memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac));
2421
2422         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2423                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2424         err = mlx4_en_alloc_resources(priv);
2425         if (err)
2426                 goto out;
2427
2428 #ifdef CONFIG_RFS_ACCEL
2429         INIT_LIST_HEAD(&priv->filters);
2430         spin_lock_init(&priv->filters_lock);
2431 #endif
2432
2433         /* Initialize time stamping config */
2434         priv->hwtstamp_config.flags = 0;
2435         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2436         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2437
2438         /* Allocate page for receive rings */
2439         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2440                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2441         if (err) {
2442                 en_err(priv, "Failed to allocate page for rx qps\n");
2443                 goto out;
2444         }
2445         priv->allocated = 1;
2446
2447         /*
2448          * Initialize netdev entry points
2449          */
2450         if (mlx4_is_master(priv->mdev->dev))
2451                 dev->netdev_ops = &mlx4_netdev_ops_master;
2452         else
2453                 dev->netdev_ops = &mlx4_netdev_ops;
2454         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2455         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2456         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2457
2458         SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
2459
2460         /*
2461          * Set driver features
2462          */
2463         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2464         if (mdev->LSO_support)
2465                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2466
2467         dev->vlan_features = dev->hw_features;
2468
2469         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2470         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2471                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2472                         NETIF_F_HW_VLAN_CTAG_FILTER;
2473         dev->hw_features |= NETIF_F_LOOPBACK;
2474
2475         if (mdev->dev->caps.steering_mode ==
2476             MLX4_STEERING_MODE_DEVICE_MANAGED)
2477                 dev->hw_features |= NETIF_F_NTUPLE;
2478
2479         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2480                 dev->priv_flags |= IFF_UNICAST_FLT;
2481
2482         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
2483                 dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2484                                         NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL;
2485                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
2486                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL;
2487         }
2488
2489         mdev->pndev[port] = dev;
2490
2491         netif_carrier_off(dev);
2492         mlx4_en_set_default_moderation(priv);
2493
2494         err = register_netdev(dev);
2495         if (err) {
2496                 en_err(priv, "Netdev registration failed for port %d\n", port);
2497                 goto out;
2498         }
2499         priv->registered = 1;
2500
2501         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2502         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2503
2504         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2505
2506         /* Configure port */
2507         mlx4_en_calc_rx_buf(dev);
2508         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2509                                     priv->rx_skb_size + ETH_FCS_LEN,
2510                                     prof->tx_pause, prof->tx_ppp,
2511                                     prof->rx_pause, prof->rx_ppp);
2512         if (err) {
2513                 en_err(priv, "Failed setting port general configurations "
2514                        "for port %d, with error %d\n", priv->port, err);
2515                 goto out;
2516         }
2517
2518         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
2519                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC);
2520                 if (err) {
2521                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
2522                                err);
2523                         goto out;
2524                 }
2525         }
2526
2527         /* Init port */
2528         en_warn(priv, "Initializing port\n");
2529         err = mlx4_INIT_PORT(mdev->dev, priv->port);
2530         if (err) {
2531                 en_err(priv, "Failed Initializing port\n");
2532                 goto out;
2533         }
2534         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2535
2536         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2537                 queue_delayed_work(mdev->workqueue, &priv->service_task,
2538                                    SERVICE_TASK_DELAY);
2539
2540         return 0;
2541
2542 out:
2543         mlx4_en_destroy_netdev(dev);
2544         return err;
2545 }
2546