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

   1 /*
   2  * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/etherdevice.h>
  35 #include <linux/tcp.h>
  36 #include <linux/if_vlan.h>
  37 #include <linux/delay.h>
  38 #include <linux/slab.h>
  39 #include <linux/hash.h>
  40 #include <net/ip.h>
  41 #include <net/busy_poll.h>
  42 #include <net/vxlan.h>
  43 #include <net/devlink.h>
  44
  45 #include <linux/mlx4/driver.h>
  46 #include <linux/mlx4/device.h>
  47 #include <linux/mlx4/cmd.h>
  48 #include <linux/mlx4/cq.h>
  49
  50 #include "mlx4_en.h"
  51 #include "en_port.h"
  52
  53 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  54 {
  55         struct mlx4_en_priv *priv = netdev_priv(dev);
  56         int i;
  57         unsigned int offset = 0;
  58
  59         if (up && up != MLX4_EN_NUM_UP)
  60                 return -EINVAL;
  61
  62         netdev_set_num_tc(dev, up);
  63
  64         /* Partition Tx queues evenly amongst UP's */
  65         for (i = 0; i < up; i++) {
  66                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  67                 offset += priv->num_tx_rings_p_up;
  68         }
  69
  70         return 0;
  71 }
  72
  73 static int __mlx4_en_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
  74                               struct tc_to_netdev *tc)
  75 {
  76         if (tc->type != TC_SETUP_MQPRIO)
  77                 return -EINVAL;
  78
  79         return mlx4_en_setup_tc(dev, tc->tc);
  80 }
  81
  82 #ifdef CONFIG_RFS_ACCEL
  83
  84 struct mlx4_en_filter {
  85         struct list_head next;
  86         struct work_struct work;
  87
  88         u8     ip_proto;
  89         __be32 src_ip;
  90         __be32 dst_ip;
  91         __be16 src_port;
  92         __be16 dst_port;
  93
  94         int rxq_index;
  95         struct mlx4_en_priv *priv;
  96         u32 flow_id;                    /* RFS infrastructure id */
  97         int id;                         /* mlx4_en driver id */
  98         u64 reg_id;                     /* Flow steering API id */
  99         u8 activated;                   /* Used to prevent expiry before filter
 100                                          * is attached
 101                                          */
 102         struct hlist_node filter_chain;
 103 };
 104
 105 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 106
 107 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 108 {
 109         switch (ip_proto) {
 110         case IPPROTO_UDP:
 111                 return MLX4_NET_TRANS_RULE_ID_UDP;
 112         case IPPROTO_TCP:
 113                 return MLX4_NET_TRANS_RULE_ID_TCP;
 114         default:
 115                 return MLX4_NET_TRANS_RULE_NUM;
 116         }
 117 };
 118
 119 static void mlx4_en_filter_work(struct work_struct *work)
 120 {
 121         struct mlx4_en_filter *filter = container_of(work,
 122                                                      struct mlx4_en_filter,
 123                                                      work);
 124         struct mlx4_en_priv *priv = filter->priv;
 125         struct mlx4_spec_list spec_tcp_udp = {
 126                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 127                 {
 128                         .tcp_udp = {
 129                                 .dst_port = filter->dst_port,
 130                                 .dst_port_msk = (__force __be16)-1,
 131                                 .src_port = filter->src_port,
 132                                 .src_port_msk = (__force __be16)-1,
 133                         },
 134                 },
 135         };
 136         struct mlx4_spec_list spec_ip = {
 137                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 138                 {
 139                         .ipv4 = {
 140                                 .dst_ip = filter->dst_ip,
 141                                 .dst_ip_msk = (__force __be32)-1,
 142                                 .src_ip = filter->src_ip,
 143                                 .src_ip_msk = (__force __be32)-1,
 144                         },
 145                 },
 146         };
 147         struct mlx4_spec_list spec_eth = {
 148                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 149         };
 150         struct mlx4_net_trans_rule rule = {
 151                 .list = LIST_HEAD_INIT(rule.list),
 152                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 153                 .exclusive = 1,
 154                 .allow_loopback = 1,
 155                 .promisc_mode = MLX4_FS_REGULAR,
 156                 .port = priv->port,
 157                 .priority = MLX4_DOMAIN_RFS,
 158         };
 159         int rc;
 160         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 161
 162         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 163                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 164                         filter->ip_proto);
 165                 goto ignore;
 166         }
 167         list_add_tail(&spec_eth.list, &rule.list);
 168         list_add_tail(&spec_ip.list, &rule.list);
 169         list_add_tail(&spec_tcp_udp.list, &rule.list);
 170
 171         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 172         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 173         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 174
 175         filter->activated = 0;
 176
 177         if (filter->reg_id) {
 178                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 179                 if (rc && rc != -ENOENT)
 180                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 181         }
 182
 183         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 184         if (rc)
 185                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 186
 187 ignore:
 188         mlx4_en_filter_rfs_expire(priv);
 189
 190         filter->activated = 1;
 191 }
 192
 193 static inline struct hlist_head *
 194 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 195                    __be16 src_port, __be16 dst_port)
 196 {
 197         unsigned long l;
 198         int bucket_idx;
 199
 200         l = (__force unsigned long)src_port |
 201             ((__force unsigned long)dst_port << 2);
 202         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 203
 204         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 205
 206         return &priv->filter_hash[bucket_idx];
 207 }
 208
 209 static struct mlx4_en_filter *
 210 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 211                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 212                      __be16 dst_port, u32 flow_id)
 213 {
 214         struct mlx4_en_filter *filter = NULL;
 215
 216         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 217         if (!filter)
 218                 return NULL;
 219
 220         filter->priv = priv;
 221         filter->rxq_index = rxq_index;
 222         INIT_WORK(&filter->work, mlx4_en_filter_work);
 223
 224         filter->src_ip = src_ip;
 225         filter->dst_ip = dst_ip;
 226         filter->ip_proto = ip_proto;
 227         filter->src_port = src_port;
 228         filter->dst_port = dst_port;
 229
 230         filter->flow_id = flow_id;
 231
 232         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 233
 234         list_add_tail(&filter->next, &priv->filters);
 235         hlist_add_head(&filter->filter_chain,
 236                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 237                                           dst_port));
 238
 239         return filter;
 240 }
 241
 242 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 243 {
 244         struct mlx4_en_priv *priv = filter->priv;
 245         int rc;
 246
 247         list_del(&filter->next);
 248
 249         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 250         if (rc && rc != -ENOENT)
 251                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 252
 253         kfree(filter);
 254 }
 255
 256 static inline struct mlx4_en_filter *
 257 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 258                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 259 {
 260         struct mlx4_en_filter *filter;
 261         struct mlx4_en_filter *ret = NULL;
 262
 263         hlist_for_each_entry(filter,
 264                              filter_hash_bucket(priv, src_ip, dst_ip,
 265                                                 src_port, dst_port),
 266                              filter_chain) {
 267                 if (filter->src_ip == src_ip &&
 268                     filter->dst_ip == dst_ip &&
 269                     filter->ip_proto == ip_proto &&
 270                     filter->src_port == src_port &&
 271                     filter->dst_port == dst_port) {
 272                         ret = filter;
 273                         break;
 274                 }
 275         }
 276
 277         return ret;
 278 }
 279
 280 static int
 281 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 282                    u16 rxq_index, u32 flow_id)
 283 {
 284         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 285         struct mlx4_en_filter *filter;
 286         const struct iphdr *ip;
 287         const __be16 *ports;
 288         u8 ip_proto;
 289         __be32 src_ip;
 290         __be32 dst_ip;
 291         __be16 src_port;
 292         __be16 dst_port;
 293         int nhoff = skb_network_offset(skb);
 294         int ret = 0;
 295
 296         if (skb->protocol != htons(ETH_P_IP))
 297                 return -EPROTONOSUPPORT;
 298
 299         ip = (const struct iphdr *)(skb->data + nhoff);
 300         if (ip_is_fragment(ip))
 301                 return -EPROTONOSUPPORT;
 302
 303         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 304                 return -EPROTONOSUPPORT;
 305         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 306
 307         ip_proto = ip->protocol;
 308         src_ip = ip->saddr;
 309         dst_ip = ip->daddr;
 310         src_port = ports[0];
 311         dst_port = ports[1];
 312
 313         spin_lock_bh(&priv->filters_lock);
 314         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 315                                      src_port, dst_port);
 316         if (filter) {
 317                 if (filter->rxq_index == rxq_index)
 318                         goto out;
 319
 320                 filter->rxq_index = rxq_index;
 321         } else {
 322                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 323                                               src_ip, dst_ip, ip_proto,
 324                                               src_port, dst_port, flow_id);
 325                 if (!filter) {
 326                         ret = -ENOMEM;
 327                         goto err;
 328                 }
 329         }
 330
 331         queue_work(priv->mdev->workqueue, &filter->work);
 332
 333 out:
 334         ret = filter->id;
 335 err:
 336         spin_unlock_bh(&priv->filters_lock);
 337
 338         return ret;
 339 }
 340
 341 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 342 {
 343         struct mlx4_en_filter *filter, *tmp;
 344         LIST_HEAD(del_list);
 345
 346         spin_lock_bh(&priv->filters_lock);
 347         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 348                 list_move(&filter->next, &del_list);
 349                 hlist_del(&filter->filter_chain);
 350         }
 351         spin_unlock_bh(&priv->filters_lock);
 352
 353         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 354                 cancel_work_sync(&filter->work);
 355                 mlx4_en_filter_free(filter);
 356         }
 357 }
 358
 359 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 360 {
 361         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 362         LIST_HEAD(del_list);
 363         int i = 0;
 364
 365         spin_lock_bh(&priv->filters_lock);
 366         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 367                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 368                         break;
 369
 370                 if (filter->activated &&
 371                     !work_pending(&filter->work) &&
 372                     rps_may_expire_flow(priv->dev,
 373                                         filter->rxq_index, filter->flow_id,
 374                                         filter->id)) {
 375                         list_move(&filter->next, &del_list);
 376                         hlist_del(&filter->filter_chain);
 377                 } else
 378                         last_filter = filter;
 379
 380                 i++;
 381         }
 382
 383         if (last_filter && (&last_filter->next != priv->filters.next))
 384                 list_move(&priv->filters, &last_filter->next);
 385
 386         spin_unlock_bh(&priv->filters_lock);
 387
 388         list_for_each_entry_safe(filter, tmp, &del_list, next)
 389                 mlx4_en_filter_free(filter);
 390 }
 391 #endif
 392
 393 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 394                                    __be16 proto, u16 vid)
 395 {
 396         struct mlx4_en_priv *priv = netdev_priv(dev);
 397         struct mlx4_en_dev *mdev = priv->mdev;
 398         int err;
 399         int idx;
 400
 401         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 402
 403         set_bit(vid, priv->active_vlans);
 404
 405         /* Add VID to port VLAN filter */
 406         mutex_lock(&mdev->state_lock);
 407         if (mdev->device_up && priv->port_up) {
 408                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 409                 if (err) {
 410                         en_err(priv, "Failed configuring VLAN filter\n");
 411                         goto out;
 412                 }
 413         }
 414         err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
 415         if (err)
 416                 en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
 417
 418 out:
 419         mutex_unlock(&mdev->state_lock);
 420         return err;
 421 }
 422
 423 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 424                                     __be16 proto, u16 vid)
 425 {
 426         struct mlx4_en_priv *priv = netdev_priv(dev);
 427         struct mlx4_en_dev *mdev = priv->mdev;
 428         int err = 0;
 429
 430         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 431
 432         clear_bit(vid, priv->active_vlans);
 433
 434         /* Remove VID from port VLAN filter */
 435         mutex_lock(&mdev->state_lock);
 436         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 437
 438         if (mdev->device_up && priv->port_up) {
 439                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 440                 if (err)
 441                         en_err(priv, "Failed configuring VLAN filter\n");
 442         }
 443         mutex_unlock(&mdev->state_lock);
 444
 445         return err;
 446 }
 447
 448 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 449 {
 450         int i;
 451         for (i = ETH_ALEN - 1; i >= 0; --i) {
 452                 dst_mac[i] = src_mac & 0xff;
 453                 src_mac >>= 8;
 454         }
 455         memset(&dst_mac[ETH_ALEN], 0, 2);
 456 }
 457
 458
 459 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 460                                     int qpn, u64 *reg_id)
 461 {
 462         int err;
 463
 464         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 465             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 466                 return 0; /* do nothing */
 467
 468         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 469                                     MLX4_DOMAIN_NIC, reg_id);
 470         if (err) {
 471                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 472                 return err;
 473         }
 474         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 475         return 0;
 476 }
 477
 478
 479 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 480                                 unsigned char *mac, int *qpn, u64 *reg_id)
 481 {
 482         struct mlx4_en_dev *mdev = priv->mdev;
 483         struct mlx4_dev *dev = mdev->dev;
 484         int err;
 485
 486         switch (dev->caps.steering_mode) {
 487         case MLX4_STEERING_MODE_B0: {
 488                 struct mlx4_qp qp;
 489                 u8 gid[16] = {0};
 490
 491                 qp.qpn = *qpn;
 492                 memcpy(&gid[10], mac, ETH_ALEN);
 493                 gid[5] = priv->port;
 494
 495                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 496                 break;
 497         }
 498         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 499                 struct mlx4_spec_list spec_eth = { {NULL} };
 500                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 501
 502                 struct mlx4_net_trans_rule rule = {
 503                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 504                         .exclusive = 0,
 505                         .allow_loopback = 1,
 506                         .promisc_mode = MLX4_FS_REGULAR,
 507                         .priority = MLX4_DOMAIN_NIC,
 508                 };
 509
 510                 rule.port = priv->port;
 511                 rule.qpn = *qpn;
 512                 INIT_LIST_HEAD(&rule.list);
 513
 514                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 515                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 516                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 517                 list_add_tail(&spec_eth.list, &rule.list);
 518
 519                 err = mlx4_flow_attach(dev, &rule, reg_id);
 520                 break;
 521         }
 522         default:
 523                 return -EINVAL;
 524         }
 525         if (err)
 526                 en_warn(priv, "Failed Attaching Unicast\n");
 527
 528         return err;
 529 }
 530
 531 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 532                                      unsigned char *mac, int qpn, u64 reg_id)
 533 {
 534         struct mlx4_en_dev *mdev = priv->mdev;
 535         struct mlx4_dev *dev = mdev->dev;
 536
 537         switch (dev->caps.steering_mode) {
 538         case MLX4_STEERING_MODE_B0: {
 539                 struct mlx4_qp qp;
 540                 u8 gid[16] = {0};
 541
 542                 qp.qpn = qpn;
 543                 memcpy(&gid[10], mac, ETH_ALEN);
 544                 gid[5] = priv->port;
 545
 546                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 547                 break;
 548         }
 549         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 550                 mlx4_flow_detach(dev, reg_id);
 551                 break;
 552         }
 553         default:
 554                 en_err(priv, "Invalid steering mode.\n");
 555         }
 556 }
 557
 558 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 559 {
 560         struct mlx4_en_dev *mdev = priv->mdev;
 561         struct mlx4_dev *dev = mdev->dev;
 562         int index = 0;
 563         int err = 0;
 564         int *qpn = &priv->base_qpn;
 565         u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 566
 567         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 568                priv->dev->dev_addr);
 569         index = mlx4_register_mac(dev, priv->port, mac);
 570         if (index < 0) {
 571                 err = index;
 572                 en_err(priv, "Failed adding MAC: %pM\n",
 573                        priv->dev->dev_addr);
 574                 return err;
 575         }
 576
 577         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 578                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 579                 *qpn = base_qpn + index;
 580                 return 0;
 581         }
 582
 583         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
 584         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 585         if (err) {
 586                 en_err(priv, "Failed to reserve qp for mac registration\n");
 587                 mlx4_unregister_mac(dev, priv->port, mac);
 588                 return err;
 589         }
 590
 591         return 0;
 592 }
 593
 594 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 595 {
 596         struct mlx4_en_dev *mdev = priv->mdev;
 597         struct mlx4_dev *dev = mdev->dev;
 598         int qpn = priv->base_qpn;
 599
 600         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 601                 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 602                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 603                        priv->dev->dev_addr);
 604                 mlx4_unregister_mac(dev, priv->port, mac);
 605         } else {
 606                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 607                        priv->port, qpn);
 608                 mlx4_qp_release_range(dev, qpn, 1);
 609                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 610         }
 611 }
 612
 613 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 614                                unsigned char *new_mac, unsigned char *prev_mac)
 615 {
 616         struct mlx4_en_dev *mdev = priv->mdev;
 617         struct mlx4_dev *dev = mdev->dev;
 618         int err = 0;
 619         u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 620
 621         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 622                 struct hlist_head *bucket;
 623                 unsigned int mac_hash;
 624                 struct mlx4_mac_entry *entry;
 625                 struct hlist_node *tmp;
 626                 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 627
 628                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 629                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 630                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 631                                 mlx4_en_uc_steer_release(priv, entry->mac,
 632                                                          qpn, entry->reg_id);
 633                                 mlx4_unregister_mac(dev, priv->port,
 634                                                     prev_mac_u64);
 635                                 hlist_del_rcu(&entry->hlist);
 636                                 synchronize_rcu();
 637                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 638                                 entry->reg_id = 0;
 639                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 640                                 hlist_add_head_rcu(&entry->hlist,
 641                                                    &priv->mac_hash[mac_hash]);
 642                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 643                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 644                                                            &qpn,
 645                                                            &entry->reg_id);
 646                                 if (err)
 647                                         return err;
 648                                 if (priv->tunnel_reg_id) {
 649                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 650                                         priv->tunnel_reg_id = 0;
 651                                 }
 652                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 653                                                                &priv->tunnel_reg_id);
 654                                 return err;
 655                         }
 656                 }
 657                 return -EINVAL;
 658         }
 659
 660         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 661 }
 662
 663 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 664                               unsigned char new_mac[ETH_ALEN + 2])
 665 {
 666         int err = 0;
 667
 668         if (priv->port_up) {
 669                 /* Remove old MAC and insert the new one */
 670                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 671                                           new_mac, priv->current_mac);
 672                 if (err)
 673                         en_err(priv, "Failed changing HW MAC address\n");
 674         } else
 675                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 676
 677         if (!err)
 678                 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 679
 680         return err;
 681 }
 682
 683 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 684 {
 685         struct mlx4_en_priv *priv = netdev_priv(dev);
 686         struct mlx4_en_dev *mdev = priv->mdev;
 687         struct sockaddr *saddr = addr;
 688         unsigned char new_mac[ETH_ALEN + 2];
 689         int err;
 690
 691         if (!is_valid_ether_addr(saddr->sa_data))
 692                 return -EADDRNOTAVAIL;
 693
 694         mutex_lock(&mdev->state_lock);
 695         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 696         err = mlx4_en_do_set_mac(priv, new_mac);
 697         if (!err)
 698                 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 699         mutex_unlock(&mdev->state_lock);
 700
 701         return err;
 702 }
 703
 704 static void mlx4_en_clear_list(struct net_device *dev)
 705 {
 706         struct mlx4_en_priv *priv = netdev_priv(dev);
 707         struct mlx4_en_mc_list *tmp, *mc_to_del;
 708
 709         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 710                 list_del(&mc_to_del->list);
 711                 kfree(mc_to_del);
 712         }
 713 }
 714
 715 static void mlx4_en_cache_mclist(struct net_device *dev)
 716 {
 717         struct mlx4_en_priv *priv = netdev_priv(dev);
 718         struct netdev_hw_addr *ha;
 719         struct mlx4_en_mc_list *tmp;
 720
 721         mlx4_en_clear_list(dev);
 722         netdev_for_each_mc_addr(ha, dev) {
 723                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 724                 if (!tmp) {
 725                         mlx4_en_clear_list(dev);
 726                         return;
 727                 }
 728                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 729                 list_add_tail(&tmp->list, &priv->mc_list);
 730         }
 731 }
 732
 733 static void update_mclist_flags(struct mlx4_en_priv *priv,
 734                                 struct list_head *dst,
 735                                 struct list_head *src)
 736 {
 737         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 738         bool found;
 739
 740         /* Find all the entries that should be removed from dst,
 741          * These are the entries that are not found in src
 742          */
 743         list_for_each_entry(dst_tmp, dst, list) {
 744                 found = false;
 745                 list_for_each_entry(src_tmp, src, list) {
 746                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 747                                 found = true;
 748                                 break;
 749                         }
 750                 }
 751                 if (!found)
 752                         dst_tmp->action = MCLIST_REM;
 753         }
 754
 755         /* Add entries that exist in src but not in dst
 756          * mark them as need to add
 757          */
 758         list_for_each_entry(src_tmp, src, list) {
 759                 found = false;
 760                 list_for_each_entry(dst_tmp, dst, list) {
 761                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 762                                 dst_tmp->action = MCLIST_NONE;
 763                                 found = true;
 764                                 break;
 765                         }
 766                 }
 767                 if (!found) {
 768                         new_mc = kmemdup(src_tmp,
 769                                          sizeof(struct mlx4_en_mc_list),
 770                                          GFP_KERNEL);
 771                         if (!new_mc)
 772                                 return;
 773
 774                         new_mc->action = MCLIST_ADD;
 775                         list_add_tail(&new_mc->list, dst);
 776                 }
 777         }
 778 }
 779
 780 static void mlx4_en_set_rx_mode(struct net_device *dev)
 781 {
 782         struct mlx4_en_priv *priv = netdev_priv(dev);
 783
 784         if (!priv->port_up)
 785                 return;
 786
 787         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 788 }
 789
 790 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 791                                      struct mlx4_en_dev *mdev)
 792 {
 793         int err = 0;
 794
 795         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 796                 if (netif_msg_rx_status(priv))
 797                         en_warn(priv, "Entering promiscuous mode\n");
 798                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 799
 800                 /* Enable promiscouos mode */
 801                 switch (mdev->dev->caps.steering_mode) {
 802                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 803                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 804                                                           priv->port,
 805                                                           priv->base_qpn,
 806                                                           MLX4_FS_ALL_DEFAULT);
 807                         if (err)
 808                                 en_err(priv, "Failed enabling promiscuous mode\n");
 809                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 810                         break;
 811
 812                 case MLX4_STEERING_MODE_B0:
 813                         err = mlx4_unicast_promisc_add(mdev->dev,
 814                                                        priv->base_qpn,
 815                                                        priv->port);
 816                         if (err)
 817                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 818
 819                         /* Add the default qp number as multicast
 820                          * promisc
 821                          */
 822                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 823                                 err = mlx4_multicast_promisc_add(mdev->dev,
 824                                                                  priv->base_qpn,
 825                                                                  priv->port);
 826                                 if (err)
 827                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 828                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 829                         }
 830                         break;
 831
 832                 case MLX4_STEERING_MODE_A0:
 833                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 834                                                      priv->port,
 835                                                      priv->base_qpn,
 836                                                      1);
 837                         if (err)
 838                                 en_err(priv, "Failed enabling promiscuous mode\n");
 839                         break;
 840                 }
 841
 842                 /* Disable port multicast filter (unconditionally) */
 843                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 844                                           0, MLX4_MCAST_DISABLE);
 845                 if (err)
 846                         en_err(priv, "Failed disabling multicast filter\n");
 847         }
 848 }
 849
 850 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 851                                        struct mlx4_en_dev *mdev)
 852 {
 853         int err = 0;
 854
 855         if (netif_msg_rx_status(priv))
 856                 en_warn(priv, "Leaving promiscuous mode\n");
 857         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 858
 859         /* Disable promiscouos mode */
 860         switch (mdev->dev->caps.steering_mode) {
 861         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 862                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 863                                                      priv->port,
 864                                                      MLX4_FS_ALL_DEFAULT);
 865                 if (err)
 866                         en_err(priv, "Failed disabling promiscuous mode\n");
 867                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 868                 break;
 869
 870         case MLX4_STEERING_MODE_B0:
 871                 err = mlx4_unicast_promisc_remove(mdev->dev,
 872                                                   priv->base_qpn,
 873                                                   priv->port);
 874                 if (err)
 875                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 876                 /* Disable Multicast promisc */
 877                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 878                         err = mlx4_multicast_promisc_remove(mdev->dev,
 879                                                             priv->base_qpn,
 880                                                             priv->port);
 881                         if (err)
 882                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 883                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 884                 }
 885                 break;
 886
 887         case MLX4_STEERING_MODE_A0:
 888                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 889                                              priv->port,
 890                                              priv->base_qpn, 0);
 891                 if (err)
 892                         en_err(priv, "Failed disabling promiscuous mode\n");
 893                 break;
 894         }
 895 }
 896
 897 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 898                                  struct net_device *dev,
 899                                  struct mlx4_en_dev *mdev)
 900 {
 901         struct mlx4_en_mc_list *mclist, *tmp;
 902         u64 mcast_addr = 0;
 903         u8 mc_list[16] = {0};
 904         int err = 0;
 905
 906         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 907         if (dev->flags & IFF_ALLMULTI) {
 908                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 909                                           0, MLX4_MCAST_DISABLE);
 910                 if (err)
 911                         en_err(priv, "Failed disabling multicast filter\n");
 912
 913                 /* Add the default qp number as multicast promisc */
 914                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 915                         switch (mdev->dev->caps.steering_mode) {
 916                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 917                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 918                                                                   priv->port,
 919                                                                   priv->base_qpn,
 920                                                                   MLX4_FS_MC_DEFAULT);
 921                                 break;
 922
 923                         case MLX4_STEERING_MODE_B0:
 924                                 err = mlx4_multicast_promisc_add(mdev->dev,
 925                                                                  priv->base_qpn,
 926                                                                  priv->port);
 927                                 break;
 928
 929                         case MLX4_STEERING_MODE_A0:
 930                                 break;
 931                         }
 932                         if (err)
 933                                 en_err(priv, "Failed entering multicast promisc mode\n");
 934                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 935                 }
 936         } else {
 937                 /* Disable Multicast promisc */
 938                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 939                         switch (mdev->dev->caps.steering_mode) {
 940                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 941                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 942                                                                      priv->port,
 943                                                                      MLX4_FS_MC_DEFAULT);
 944                                 break;
 945
 946                         case MLX4_STEERING_MODE_B0:
 947                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 948                                                                     priv->base_qpn,
 949                                                                     priv->port);
 950                                 break;
 951
 952                         case MLX4_STEERING_MODE_A0:
 953                                 break;
 954                         }
 955                         if (err)
 956                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 957                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 958                 }
 959
 960                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 961                                           0, MLX4_MCAST_DISABLE);
 962                 if (err)
 963                         en_err(priv, "Failed disabling multicast filter\n");
 964
 965                 /* Flush mcast filter and init it with broadcast address */
 966                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 967                                     1, MLX4_MCAST_CONFIG);
 968
 969                 /* Update multicast list - we cache all addresses so they won't
 970                  * change while HW is updated holding the command semaphor */
 971                 netif_addr_lock_bh(dev);
 972                 mlx4_en_cache_mclist(dev);
 973                 netif_addr_unlock_bh(dev);
 974                 list_for_each_entry(mclist, &priv->mc_list, list) {
 975                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
 976                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 977                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
 978                 }
 979                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 980                                           0, MLX4_MCAST_ENABLE);
 981                 if (err)
 982                         en_err(priv, "Failed enabling multicast filter\n");
 983
 984                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
 985                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
 986                         if (mclist->action == MCLIST_REM) {
 987                                 /* detach this address and delete from list */
 988                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
 989                                 mc_list[5] = priv->port;
 990                                 err = mlx4_multicast_detach(mdev->dev,
 991                                                             &priv->rss_map.indir_qp,
 992                                                             mc_list,
 993                                                             MLX4_PROT_ETH,
 994                                                             mclist->reg_id);
 995                                 if (err)
 996                                         en_err(priv, "Fail to detach multicast address\n");
 997
 998                                 if (mclist->tunnel_reg_id) {
 999                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1000                                         if (err)
1001                                                 en_err(priv, "Failed to detach multicast address\n");
1002                                 }
1003
1004                                 /* remove from list */
1005                                 list_del(&mclist->list);
1006                                 kfree(mclist);
1007                         } else if (mclist->action == MCLIST_ADD) {
1008                                 /* attach the address */
1009                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1010                                 /* needed for B0 steering support */
1011                                 mc_list[5] = priv->port;
1012                                 err = mlx4_multicast_attach(mdev->dev,
1013                                                             &priv->rss_map.indir_qp,
1014                                                             mc_list,
1015                                                             priv->port, 0,
1016                                                             MLX4_PROT_ETH,
1017                                                             &mclist->reg_id);
1018                                 if (err)
1019                                         en_err(priv, "Fail to attach multicast address\n");
1020
1021                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1022                                                                &mclist->tunnel_reg_id);
1023                                 if (err)
1024                                         en_err(priv, "Failed to attach multicast address\n");
1025                         }
1026                 }
1027         }
1028 }
1029
1030 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1031                                  struct net_device *dev,
1032                                  struct mlx4_en_dev *mdev)
1033 {
1034         struct netdev_hw_addr *ha;
1035         struct mlx4_mac_entry *entry;
1036         struct hlist_node *tmp;
1037         bool found;
1038         u64 mac;
1039         int err = 0;
1040         struct hlist_head *bucket;
1041         unsigned int i;
1042         int removed = 0;
1043         u32 prev_flags;
1044
1045         /* Note that we do not need to protect our mac_hash traversal with rcu,
1046          * since all modification code is protected by mdev->state_lock
1047          */
1048
1049         /* find what to remove */
1050         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1051                 bucket = &priv->mac_hash[i];
1052                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1053                         found = false;
1054                         netdev_for_each_uc_addr(ha, dev) {
1055                                 if (ether_addr_equal_64bits(entry->mac,
1056                                                             ha->addr)) {
1057                                         found = true;
1058                                         break;
1059                                 }
1060                         }
1061
1062                         /* MAC address of the port is not in uc list */
1063                         if (ether_addr_equal_64bits(entry->mac,
1064                                                     priv->current_mac))
1065                                 found = true;
1066
1067                         if (!found) {
1068                                 mac = mlx4_mac_to_u64(entry->mac);
1069                                 mlx4_en_uc_steer_release(priv, entry->mac,
1070                                                          priv->base_qpn,
1071                                                          entry->reg_id);
1072                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1073
1074                                 hlist_del_rcu(&entry->hlist);
1075                                 kfree_rcu(entry, rcu);
1076                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1077                                        entry->mac, priv->port);
1078                                 ++removed;
1079                         }
1080                 }
1081         }
1082
1083         /* if we didn't remove anything, there is no use in trying to add
1084          * again once we are in a forced promisc mode state
1085          */
1086         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1087                 return;
1088
1089         prev_flags = priv->flags;
1090         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1091
1092         /* find what to add */
1093         netdev_for_each_uc_addr(ha, dev) {
1094                 found = false;
1095                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1096                 hlist_for_each_entry(entry, bucket, hlist) {
1097                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1098                                 found = true;
1099                                 break;
1100                         }
1101                 }
1102
1103                 if (!found) {
1104                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1105                         if (!entry) {
1106                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1107                                        ha->addr, priv->port);
1108                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1109                                 break;
1110                         }
1111                         mac = mlx4_mac_to_u64(ha->addr);
1112                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1113                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1114                         if (err < 0) {
1115                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1116                                        ha->addr, priv->port, err);
1117                                 kfree(entry);
1118                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1119                                 break;
1120                         }
1121                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1122                                                    &priv->base_qpn,
1123                                                    &entry->reg_id);
1124                         if (err) {
1125                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1126                                        ha->addr, priv->port, err);
1127                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1128                                 kfree(entry);
1129                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1130                                 break;
1131                         } else {
1132                                 unsigned int mac_hash;
1133                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1134                                        ha->addr, priv->port);
1135                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1136                                 bucket = &priv->mac_hash[mac_hash];
1137                                 hlist_add_head_rcu(&entry->hlist, bucket);
1138                         }
1139                 }
1140         }
1141
1142         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1143                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1144                         priv->port);
1145         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1146                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1147                         priv->port);
1148         }
1149 }
1150
1151 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1152 {
1153         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1154                                                  rx_mode_task);
1155         struct mlx4_en_dev *mdev = priv->mdev;
1156         struct net_device *dev = priv->dev;
1157
1158         mutex_lock(&mdev->state_lock);
1159         if (!mdev->device_up) {
1160                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1161                 goto out;
1162         }
1163         if (!priv->port_up) {
1164                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1165                 goto out;
1166         }
1167
1168         if (!netif_carrier_ok(dev)) {
1169                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1170                         if (priv->port_state.link_state) {
1171                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1172                                 netif_carrier_on(dev);
1173                                 en_dbg(LINK, priv, "Link Up\n");
1174                         }
1175                 }
1176         }
1177
1178         if (dev->priv_flags & IFF_UNICAST_FLT)
1179                 mlx4_en_do_uc_filter(priv, dev, mdev);
1180
1181         /* Promsicuous mode: disable all filters */
1182         if ((dev->flags & IFF_PROMISC) ||
1183             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1184                 mlx4_en_set_promisc_mode(priv, mdev);
1185                 goto out;
1186         }
1187
1188         /* Not in promiscuous mode */
1189         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1190                 mlx4_en_clear_promisc_mode(priv, mdev);
1191
1192         mlx4_en_do_multicast(priv, dev, mdev);
1193 out:
1194         mutex_unlock(&mdev->state_lock);
1195 }
1196
1197 #ifdef CONFIG_NET_POLL_CONTROLLER
1198 static void mlx4_en_netpoll(struct net_device *dev)
1199 {
1200         struct mlx4_en_priv *priv = netdev_priv(dev);
1201         struct mlx4_en_cq *cq;
1202         int i;
1203
1204         for (i = 0; i < priv->rx_ring_num; i++) {
1205                 cq = priv->rx_cq[i];
1206                 napi_schedule(&cq->napi);
1207         }
1208 }
1209 #endif
1210
1211 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1212 {
1213         u64 reg_id;
1214         int err = 0;
1215         int *qpn = &priv->base_qpn;
1216         struct mlx4_mac_entry *entry;
1217
1218         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1219         if (err)
1220                 return err;
1221
1222         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1223                                        &priv->tunnel_reg_id);
1224         if (err)
1225                 goto tunnel_err;
1226
1227         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1228         if (!entry) {
1229                 err = -ENOMEM;
1230                 goto alloc_err;
1231         }
1232
1233         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1234         memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1235         entry->reg_id = reg_id;
1236         hlist_add_head_rcu(&entry->hlist,
1237                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1238
1239         return 0;
1240
1241 alloc_err:
1242         if (priv->tunnel_reg_id)
1243                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1244
1245 tunnel_err:
1246         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1247         return err;
1248 }
1249
1250 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1251 {
1252         u64 mac;
1253         unsigned int i;
1254         int qpn = priv->base_qpn;
1255         struct hlist_head *bucket;
1256         struct hlist_node *tmp;
1257         struct mlx4_mac_entry *entry;
1258
1259         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1260                 bucket = &priv->mac_hash[i];
1261                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1262                         mac = mlx4_mac_to_u64(entry->mac);
1263                         en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1264                                entry->mac);
1265                         mlx4_en_uc_steer_release(priv, entry->mac,
1266                                                  qpn, entry->reg_id);
1267
1268                         mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1269                         hlist_del_rcu(&entry->hlist);
1270                         kfree_rcu(entry, rcu);
1271                 }
1272         }
1273
1274         if (priv->tunnel_reg_id) {
1275                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1276                 priv->tunnel_reg_id = 0;
1277         }
1278 }
1279
1280 static void mlx4_en_tx_timeout(struct net_device *dev)
1281 {
1282         struct mlx4_en_priv *priv = netdev_priv(dev);
1283         struct mlx4_en_dev *mdev = priv->mdev;
1284         int i;
1285
1286         if (netif_msg_timer(priv))
1287                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1288
1289         for (i = 0; i < priv->tx_ring_num; i++) {
1290                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1291                         continue;
1292                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1293                         i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1294                         priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1295         }
1296
1297         priv->port_stats.tx_timeout++;
1298         en_dbg(DRV, priv, "Scheduling watchdog\n");
1299         queue_work(mdev->workqueue, &priv->watchdog_task);
1300 }
1301
1302
1303 static struct rtnl_link_stats64 *
1304 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1305 {
1306         struct mlx4_en_priv *priv = netdev_priv(dev);
1307
1308         spin_lock_bh(&priv->stats_lock);
1309         netdev_stats_to_stats64(stats, &dev->stats);
1310         spin_unlock_bh(&priv->stats_lock);
1311
1312         return stats;
1313 }
1314
1315 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1316 {
1317         struct mlx4_en_cq *cq;
1318         int i;
1319
1320         /* If we haven't received a specific coalescing setting
1321          * (module param), we set the moderation parameters as follows:
1322          * - moder_cnt is set to the number of mtu sized packets to
1323          *   satisfy our coalescing target.
1324          * - moder_time is set to a fixed value.
1325          */
1326         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1327         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1328         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1329         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1330         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1331                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1332
1333         /* Setup cq moderation params */
1334         for (i = 0; i < priv->rx_ring_num; i++) {
1335                 cq = priv->rx_cq[i];
1336                 cq->moder_cnt = priv->rx_frames;
1337                 cq->moder_time = priv->rx_usecs;
1338                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1339                 priv->last_moder_packets[i] = 0;
1340                 priv->last_moder_bytes[i] = 0;
1341         }
1342
1343         for (i = 0; i < priv->tx_ring_num; i++) {
1344                 cq = priv->tx_cq[i];
1345                 cq->moder_cnt = priv->tx_frames;
1346                 cq->moder_time = priv->tx_usecs;
1347         }
1348
1349         /* Reset auto-moderation params */
1350         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1351         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1352         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1353         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1354         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1355         priv->adaptive_rx_coal = 1;
1356         priv->last_moder_jiffies = 0;
1357         priv->last_moder_tx_packets = 0;
1358 }
1359
1360 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1361 {
1362         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1363         struct mlx4_en_cq *cq;
1364         unsigned long packets;
1365         unsigned long rate;
1366         unsigned long avg_pkt_size;
1367         unsigned long rx_packets;
1368         unsigned long rx_bytes;
1369         unsigned long rx_pkt_diff;
1370         int moder_time;
1371         int ring, err;
1372
1373         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1374                 return;
1375
1376         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1377                 spin_lock_bh(&priv->stats_lock);
1378                 rx_packets = priv->rx_ring[ring]->packets;
1379                 rx_bytes = priv->rx_ring[ring]->bytes;
1380                 spin_unlock_bh(&priv->stats_lock);
1381
1382                 rx_pkt_diff = ((unsigned long) (rx_packets -
1383                                 priv->last_moder_packets[ring]));
1384                 packets = rx_pkt_diff;
1385                 rate = packets * HZ / period;
1386                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1387                                 priv->last_moder_bytes[ring])) / packets : 0;
1388
1389                 /* Apply auto-moderation only when packet rate
1390                  * exceeds a rate that it matters */
1391                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1392                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1393                         if (rate < priv->pkt_rate_low)
1394                                 moder_time = priv->rx_usecs_low;
1395                         else if (rate > priv->pkt_rate_high)
1396                                 moder_time = priv->rx_usecs_high;
1397                         else
1398                                 moder_time = (rate - priv->pkt_rate_low) *
1399                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1400                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1401                                         priv->rx_usecs_low;
1402                 } else {
1403                         moder_time = priv->rx_usecs_low;
1404                 }
1405
1406                 if (moder_time != priv->last_moder_time[ring]) {
1407                         priv->last_moder_time[ring] = moder_time;
1408                         cq = priv->rx_cq[ring];
1409                         cq->moder_time = moder_time;
1410                         cq->moder_cnt = priv->rx_frames;
1411                         err = mlx4_en_set_cq_moder(priv, cq);
1412                         if (err)
1413                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1414                                        ring);
1415                 }
1416                 priv->last_moder_packets[ring] = rx_packets;
1417                 priv->last_moder_bytes[ring] = rx_bytes;
1418         }
1419
1420         priv->last_moder_jiffies = jiffies;
1421 }
1422
1423 static void mlx4_en_do_get_stats(struct work_struct *work)
1424 {
1425         struct delayed_work *delay = to_delayed_work(work);
1426         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1427                                                  stats_task);
1428         struct mlx4_en_dev *mdev = priv->mdev;
1429         int err;
1430
1431         mutex_lock(&mdev->state_lock);
1432         if (mdev->device_up) {
1433                 if (priv->port_up) {
1434                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1435                         if (err)
1436                                 en_dbg(HW, priv, "Could not update stats\n");
1437
1438                         mlx4_en_auto_moderation(priv);
1439                 }
1440
1441                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1442         }
1443         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1444                 mlx4_en_do_set_mac(priv, priv->current_mac);
1445                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1446         }
1447         mutex_unlock(&mdev->state_lock);
1448 }
1449
1450 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1451  * periodically
1452  */
1453 static void mlx4_en_service_task(struct work_struct *work)
1454 {
1455         struct delayed_work *delay = to_delayed_work(work);
1456         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1457                                                  service_task);
1458         struct mlx4_en_dev *mdev = priv->mdev;
1459
1460         mutex_lock(&mdev->state_lock);
1461         if (mdev->device_up) {
1462                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1463                         mlx4_en_ptp_overflow_check(mdev);
1464
1465                 mlx4_en_recover_from_oom(priv);
1466                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1467                                    SERVICE_TASK_DELAY);
1468         }
1469         mutex_unlock(&mdev->state_lock);
1470 }
1471
1472 static void mlx4_en_linkstate(struct work_struct *work)
1473 {
1474         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1475                                                  linkstate_task);
1476         struct mlx4_en_dev *mdev = priv->mdev;
1477         int linkstate = priv->link_state;
1478
1479         mutex_lock(&mdev->state_lock);
1480         /* If observable port state changed set carrier state and
1481          * report to system log */
1482         if (priv->last_link_state != linkstate) {
1483                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1484                         en_info(priv, "Link Down\n");
1485                         netif_carrier_off(priv->dev);
1486                 } else {
1487                         en_info(priv, "Link Up\n");
1488                         netif_carrier_on(priv->dev);
1489                 }
1490         }
1491         priv->last_link_state = linkstate;
1492         mutex_unlock(&mdev->state_lock);
1493 }
1494
1495 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1496 {
1497         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1498         int numa_node = priv->mdev->dev->numa_node;
1499
1500         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1501                 return -ENOMEM;
1502
1503         cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1504                         ring->affinity_mask);
1505         return 0;
1506 }
1507
1508 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1509 {
1510         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1511 }
1512
1513 int mlx4_en_start_port(struct net_device *dev)
1514 {
1515         struct mlx4_en_priv *priv = netdev_priv(dev);
1516         struct mlx4_en_dev *mdev = priv->mdev;
1517         struct mlx4_en_cq *cq;
1518         struct mlx4_en_tx_ring *tx_ring;
1519         int rx_index = 0;
1520         int tx_index = 0;
1521         int err = 0;
1522         int i;
1523         int j;
1524         u8 mc_list[16] = {0};
1525
1526         if (priv->port_up) {
1527                 en_dbg(DRV, priv, "start port called while port already up\n");
1528                 return 0;
1529         }
1530
1531         INIT_LIST_HEAD(&priv->mc_list);
1532         INIT_LIST_HEAD(&priv->curr_list);
1533         INIT_LIST_HEAD(&priv->ethtool_list);
1534         memset(&priv->ethtool_rules[0], 0,
1535                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1536
1537         /* Calculate Rx buf size */
1538         dev->mtu = min(dev->mtu, priv->max_mtu);
1539         mlx4_en_calc_rx_buf(dev);
1540         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1541
1542         /* Configure rx cq's and rings */
1543         err = mlx4_en_activate_rx_rings(priv);
1544         if (err) {
1545                 en_err(priv, "Failed to activate RX rings\n");
1546                 return err;
1547         }
1548         for (i = 0; i < priv->rx_ring_num; i++) {
1549                 cq = priv->rx_cq[i];
1550
1551                 err = mlx4_en_init_affinity_hint(priv, i);
1552                 if (err) {
1553                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1554                         goto cq_err;
1555                 }
1556
1557                 err = mlx4_en_activate_cq(priv, cq, i);
1558                 if (err) {
1559                         en_err(priv, "Failed activating Rx CQ\n");
1560                         mlx4_en_free_affinity_hint(priv, i);
1561                         goto cq_err;
1562                 }
1563
1564                 for (j = 0; j < cq->size; j++) {
1565                         struct mlx4_cqe *cqe = NULL;
1566
1567                         cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1568                               priv->cqe_factor;
1569                         cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1570                 }
1571
1572                 err = mlx4_en_set_cq_moder(priv, cq);
1573                 if (err) {
1574                         en_err(priv, "Failed setting cq moderation parameters\n");
1575                         mlx4_en_deactivate_cq(priv, cq);
1576                         mlx4_en_free_affinity_hint(priv, i);
1577                         goto cq_err;
1578                 }
1579                 mlx4_en_arm_cq(priv, cq);
1580                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1581                 ++rx_index;
1582         }
1583
1584         /* Set qp number */
1585         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1586         err = mlx4_en_get_qp(priv);
1587         if (err) {
1588                 en_err(priv, "Failed getting eth qp\n");
1589                 goto cq_err;
1590         }
1591         mdev->mac_removed[priv->port] = 0;
1592
1593         priv->counter_index =
1594                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1595
1596         err = mlx4_en_config_rss_steer(priv);
1597         if (err) {
1598                 en_err(priv, "Failed configuring rss steering\n");
1599                 goto mac_err;
1600         }
1601
1602         err = mlx4_en_create_drop_qp(priv);
1603         if (err)
1604                 goto rss_err;
1605
1606         /* Configure tx cq's and rings */
1607         for (i = 0; i < priv->tx_ring_num; i++) {
1608                 /* Configure cq */
1609                 cq = priv->tx_cq[i];
1610                 err = mlx4_en_activate_cq(priv, cq, i);
1611                 if (err) {
1612                         en_err(priv, "Failed allocating Tx CQ\n");
1613                         goto tx_err;
1614                 }
1615                 err = mlx4_en_set_cq_moder(priv, cq);
1616                 if (err) {
1617                         en_err(priv, "Failed setting cq moderation parameters\n");
1618                         mlx4_en_deactivate_cq(priv, cq);
1619                         goto tx_err;
1620                 }
1621                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1622                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1623
1624                 /* Configure ring */
1625                 tx_ring = priv->tx_ring[i];
1626                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1627                         i / priv->num_tx_rings_p_up);
1628                 if (err) {
1629                         en_err(priv, "Failed allocating Tx ring\n");
1630                         mlx4_en_deactivate_cq(priv, cq);
1631                         goto tx_err;
1632                 }
1633                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1634
1635                 /* Arm CQ for TX completions */
1636                 mlx4_en_arm_cq(priv, cq);
1637
1638                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1639                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1640                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1641                 ++tx_index;
1642         }
1643
1644         /* Configure port */
1645         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1646                                     priv->rx_skb_size + ETH_FCS_LEN,
1647                                     priv->prof->tx_pause,
1648                                     priv->prof->tx_ppp,
1649                                     priv->prof->rx_pause,
1650                                     priv->prof->rx_ppp);
1651         if (err) {
1652                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1653                        priv->port, err);
1654                 goto tx_err;
1655         }
1656         /* Set default qp number */
1657         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1658         if (err) {
1659                 en_err(priv, "Failed setting default qp numbers\n");
1660                 goto tx_err;
1661         }
1662
1663         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1664                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1665                 if (err) {
1666                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1667                                err);
1668                         goto tx_err;
1669                 }
1670         }
1671
1672         /* Init port */
1673         en_dbg(HW, priv, "Initializing port\n");
1674         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1675         if (err) {
1676                 en_err(priv, "Failed Initializing port\n");
1677                 goto tx_err;
1678         }
1679
1680         /* Set Unicast and VXLAN steering rules */
1681         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1682             mlx4_en_set_rss_steer_rules(priv))
1683                 mlx4_warn(mdev, "Failed setting steering rules\n");
1684
1685         /* Attach rx QP to bradcast address */
1686         eth_broadcast_addr(&mc_list[10]);
1687         mc_list[5] = priv->port; /* needed for B0 steering support */
1688         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1689                                   priv->port, 0, MLX4_PROT_ETH,
1690                                   &priv->broadcast_id))
1691                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1692
1693         /* Must redo promiscuous mode setup. */
1694         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1695
1696         /* Schedule multicast task to populate multicast list */
1697         queue_work(mdev->workqueue, &priv->rx_mode_task);
1698
1699 #ifdef CONFIG_MLX4_EN_VXLAN
1700         if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1701                 vxlan_get_rx_port(dev);
1702 #endif
1703         priv->port_up = true;
1704         netif_tx_start_all_queues(dev);
1705         netif_device_attach(dev);
1706
1707         return 0;
1708
1709 tx_err:
1710         while (tx_index--) {
1711                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1712                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1713         }
1714         mlx4_en_destroy_drop_qp(priv);
1715 rss_err:
1716         mlx4_en_release_rss_steer(priv);
1717 mac_err:
1718         mlx4_en_put_qp(priv);
1719 cq_err:
1720         while (rx_index--) {
1721                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1722                 mlx4_en_free_affinity_hint(priv, rx_index);
1723         }
1724         for (i = 0; i < priv->rx_ring_num; i++)
1725                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1726
1727         return err; /* need to close devices */
1728 }
1729
1730
1731 void mlx4_en_stop_port(struct net_device *dev, int detach)
1732 {
1733         struct mlx4_en_priv *priv = netdev_priv(dev);
1734         struct mlx4_en_dev *mdev = priv->mdev;
1735         struct mlx4_en_mc_list *mclist, *tmp;
1736         struct ethtool_flow_id *flow, *tmp_flow;
1737         int i;
1738         u8 mc_list[16] = {0};
1739
1740         if (!priv->port_up) {
1741                 en_dbg(DRV, priv, "stop port called while port already down\n");
1742                 return;
1743         }
1744
1745         /* close port*/
1746         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1747
1748         /* Synchronize with tx routine */
1749         netif_tx_lock_bh(dev);
1750         if (detach)
1751                 netif_device_detach(dev);
1752         netif_tx_stop_all_queues(dev);
1753         netif_tx_unlock_bh(dev);
1754
1755         netif_tx_disable(dev);
1756
1757         /* Set port as not active */
1758         priv->port_up = false;
1759         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1760
1761         /* Promsicuous mode */
1762         if (mdev->dev->caps.steering_mode ==
1763             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1764                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1765                                  MLX4_EN_FLAG_MC_PROMISC);
1766                 mlx4_flow_steer_promisc_remove(mdev->dev,
1767                                                priv->port,
1768                                                MLX4_FS_ALL_DEFAULT);
1769                 mlx4_flow_steer_promisc_remove(mdev->dev,
1770                                                priv->port,
1771                                                MLX4_FS_MC_DEFAULT);
1772         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1773                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1774
1775                 /* Disable promiscouos mode */
1776                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1777                                             priv->port);
1778
1779                 /* Disable Multicast promisc */
1780                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1781                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1782                                                       priv->port);
1783                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1784                 }
1785         }
1786
1787         /* Detach All multicasts */
1788         eth_broadcast_addr(&mc_list[10]);
1789         mc_list[5] = priv->port; /* needed for B0 steering support */
1790         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1791                               MLX4_PROT_ETH, priv->broadcast_id);
1792         list_for_each_entry(mclist, &priv->curr_list, list) {
1793                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1794                 mc_list[5] = priv->port;
1795                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1796                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1797                 if (mclist->tunnel_reg_id)
1798                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1799         }
1800         mlx4_en_clear_list(dev);
1801         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1802                 list_del(&mclist->list);
1803                 kfree(mclist);
1804         }
1805
1806         /* Flush multicast filter */
1807         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1808
1809         /* Remove flow steering rules for the port*/
1810         if (mdev->dev->caps.steering_mode ==
1811             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1812                 ASSERT_RTNL();
1813                 list_for_each_entry_safe(flow, tmp_flow,
1814                                          &priv->ethtool_list, list) {
1815                         mlx4_flow_detach(mdev->dev, flow->id);
1816                         list_del(&flow->list);
1817                 }
1818         }
1819
1820         mlx4_en_destroy_drop_qp(priv);
1821
1822         /* Free TX Rings */
1823         for (i = 0; i < priv->tx_ring_num; i++) {
1824                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1825                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1826         }
1827         msleep(10);
1828
1829         for (i = 0; i < priv->tx_ring_num; i++)
1830                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1831
1832         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1833                 mlx4_en_delete_rss_steer_rules(priv);
1834
1835         /* Free RSS qps */
1836         mlx4_en_release_rss_steer(priv);
1837
1838         /* Unregister Mac address for the port */
1839         mlx4_en_put_qp(priv);
1840         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1841                 mdev->mac_removed[priv->port] = 1;
1842
1843         /* Free RX Rings */
1844         for (i = 0; i < priv->rx_ring_num; i++) {
1845                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1846
1847                 napi_synchronize(&cq->napi);
1848                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1849                 mlx4_en_deactivate_cq(priv, cq);
1850
1851                 mlx4_en_free_affinity_hint(priv, i);
1852         }
1853 }
1854
1855 static void mlx4_en_restart(struct work_struct *work)
1856 {
1857         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1858                                                  watchdog_task);
1859         struct mlx4_en_dev *mdev = priv->mdev;
1860         struct net_device *dev = priv->dev;
1861
1862         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1863
1864         rtnl_lock();
1865         mutex_lock(&mdev->state_lock);
1866         if (priv->port_up) {
1867                 mlx4_en_stop_port(dev, 1);
1868                 if (mlx4_en_start_port(dev))
1869                         en_err(priv, "Failed restarting port %d\n", priv->port);
1870         }
1871         mutex_unlock(&mdev->state_lock);
1872         rtnl_unlock();
1873 }
1874
1875 static void mlx4_en_clear_stats(struct net_device *dev)
1876 {
1877         struct mlx4_en_priv *priv = netdev_priv(dev);
1878         struct mlx4_en_dev *mdev = priv->mdev;
1879         int i;
1880
1881         if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1882                 en_dbg(HW, priv, "Failed dumping statistics\n");
1883
1884         memset(&priv->pstats, 0, sizeof(priv->pstats));
1885         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1886         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1887         memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
1888         memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
1889         memset(&priv->rx_priority_flowstats, 0,
1890                sizeof(priv->rx_priority_flowstats));
1891         memset(&priv->tx_priority_flowstats, 0,
1892                sizeof(priv->tx_priority_flowstats));
1893         memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
1894
1895         for (i = 0; i < priv->tx_ring_num; i++) {
1896                 priv->tx_ring[i]->bytes = 0;
1897                 priv->tx_ring[i]->packets = 0;
1898                 priv->tx_ring[i]->tx_csum = 0;
1899                 priv->tx_ring[i]->tx_dropped = 0;
1900                 priv->tx_ring[i]->queue_stopped = 0;
1901                 priv->tx_ring[i]->wake_queue = 0;
1902                 priv->tx_ring[i]->tso_packets = 0;
1903                 priv->tx_ring[i]->xmit_more = 0;
1904         }
1905         for (i = 0; i < priv->rx_ring_num; i++) {
1906                 priv->rx_ring[i]->bytes = 0;
1907                 priv->rx_ring[i]->packets = 0;
1908                 priv->rx_ring[i]->csum_ok = 0;
1909                 priv->rx_ring[i]->csum_none = 0;
1910                 priv->rx_ring[i]->csum_complete = 0;
1911         }
1912 }
1913
1914 static int mlx4_en_open(struct net_device *dev)
1915 {
1916         struct mlx4_en_priv *priv = netdev_priv(dev);
1917         struct mlx4_en_dev *mdev = priv->mdev;
1918         int err = 0;
1919
1920         mutex_lock(&mdev->state_lock);
1921
1922         if (!mdev->device_up) {
1923                 en_err(priv, "Cannot open - device down/disabled\n");
1924                 err = -EBUSY;
1925                 goto out;
1926         }
1927
1928         /* Reset HW statistics and SW counters */
1929         mlx4_en_clear_stats(dev);
1930
1931         err = mlx4_en_start_port(dev);
1932         if (err)
1933                 en_err(priv, "Failed starting port:%d\n", priv->port);
1934
1935 out:
1936         mutex_unlock(&mdev->state_lock);
1937         return err;
1938 }
1939
1940
1941 static int mlx4_en_close(struct net_device *dev)
1942 {
1943         struct mlx4_en_priv *priv = netdev_priv(dev);
1944         struct mlx4_en_dev *mdev = priv->mdev;
1945
1946         en_dbg(IFDOWN, priv, "Close port called\n");
1947
1948         mutex_lock(&mdev->state_lock);
1949
1950         mlx4_en_stop_port(dev, 0);
1951         netif_carrier_off(dev);
1952
1953         mutex_unlock(&mdev->state_lock);
1954         return 0;
1955 }
1956
1957 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1958 {
1959         int i;
1960
1961 #ifdef CONFIG_RFS_ACCEL
1962         priv->dev->rx_cpu_rmap = NULL;
1963 #endif
1964
1965         for (i = 0; i < priv->tx_ring_num; i++) {
1966                 if (priv->tx_ring && priv->tx_ring[i])
1967                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1968                 if (priv->tx_cq && priv->tx_cq[i])
1969                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1970         }
1971
1972         for (i = 0; i < priv->rx_ring_num; i++) {
1973                 if (priv->rx_ring[i])
1974                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1975                                 priv->prof->rx_ring_size, priv->stride);
1976                 if (priv->rx_cq[i])
1977                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1978         }
1979
1980 }
1981
1982 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1983 {
1984         struct mlx4_en_port_profile *prof = priv->prof;
1985         int i;
1986         int node;
1987
1988         /* Create tx Rings */
1989         for (i = 0; i < priv->tx_ring_num; i++) {
1990                 node = cpu_to_node(i % num_online_cpus());
1991                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1992                                       prof->tx_ring_size, i, TX, node))
1993                         goto err;
1994
1995                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1996                                            prof->tx_ring_size, TXBB_SIZE,
1997                                            node, i))
1998                         goto err;
1999         }
2000
2001         /* Create rx Rings */
2002         for (i = 0; i < priv->rx_ring_num; i++) {
2003                 node = cpu_to_node(i % num_online_cpus());
2004                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2005                                       prof->rx_ring_size, i, RX, node))
2006                         goto err;
2007
2008                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2009                                            prof->rx_ring_size, priv->stride,
2010                                            node))
2011                         goto err;
2012         }
2013
2014 #ifdef CONFIG_RFS_ACCEL
2015         priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2016 #endif
2017
2018         return 0;
2019
2020 err:
2021         en_err(priv, "Failed to allocate NIC resources\n");
2022         for (i = 0; i < priv->rx_ring_num; i++) {
2023                 if (priv->rx_ring[i])
2024                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2025                                                 prof->rx_ring_size,
2026                                                 priv->stride);
2027                 if (priv->rx_cq[i])
2028                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2029         }
2030         for (i = 0; i < priv->tx_ring_num; i++) {
2031                 if (priv->tx_ring[i])
2032                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2033                 if (priv->tx_cq[i])
2034                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2035         }
2036         return -ENOMEM;
2037 }
2038
2039 static void mlx4_en_shutdown(struct net_device *dev)
2040 {
2041         rtnl_lock();
2042         netif_device_detach(dev);
2043         mlx4_en_close(dev);
2044         rtnl_unlock();
2045 }
2046
2047 void mlx4_en_destroy_netdev(struct net_device *dev)
2048 {
2049         struct mlx4_en_priv *priv = netdev_priv(dev);
2050         struct mlx4_en_dev *mdev = priv->mdev;
2051         bool shutdown = mdev->dev->persist->interface_state &
2052                                             MLX4_INTERFACE_STATE_SHUTDOWN;
2053
2054         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2055
2056         /* Unregister device - this will close the port if it was up */
2057         if (priv->registered) {
2058                 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
2059                                                               priv->port));
2060                 if (shutdown)
2061                         mlx4_en_shutdown(dev);
2062                 else
2063                         unregister_netdev(dev);
2064         }
2065
2066         if (priv->allocated)
2067                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2068
2069         cancel_delayed_work(&priv->stats_task);
2070         cancel_delayed_work(&priv->service_task);
2071         /* flush any pending task for this netdev */
2072         flush_workqueue(mdev->workqueue);
2073
2074         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2075                 mlx4_en_remove_timestamp(mdev);
2076
2077         /* Detach the netdev so tasks would not attempt to access it */
2078         mutex_lock(&mdev->state_lock);
2079         mdev->pndev[priv->port] = NULL;
2080         mdev->upper[priv->port] = NULL;
2081         mutex_unlock(&mdev->state_lock);
2082
2083         mlx4_en_free_resources(priv);
2084
2085         kfree(priv->tx_ring);
2086         kfree(priv->tx_cq);
2087
2088         if (!shutdown)
2089                 free_netdev(dev);
2090 }
2091
2092 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2093 {
2094         struct mlx4_en_priv *priv = netdev_priv(dev);
2095         struct mlx4_en_dev *mdev = priv->mdev;
2096         int err = 0;
2097
2098         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2099                  dev->mtu, new_mtu);
2100
2101         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2102                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2103                 return -EPERM;
2104         }
2105         dev->mtu = new_mtu;
2106
2107         if (netif_running(dev)) {
2108                 mutex_lock(&mdev->state_lock);
2109                 if (!mdev->device_up) {
2110                         /* NIC is probably restarting - let watchdog task reset
2111                          * the port */
2112                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2113                 } else {
2114                         mlx4_en_stop_port(dev, 1);
2115                         err = mlx4_en_start_port(dev);
2116                         if (err) {
2117                                 en_err(priv, "Failed restarting port:%d\n",
2118                                          priv->port);
2119                                 queue_work(mdev->workqueue, &priv->watchdog_task);
2120                         }
2121                 }
2122                 mutex_unlock(&mdev->state_lock);
2123         }
2124         return 0;
2125 }
2126
2127 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2128 {
2129         struct mlx4_en_priv *priv = netdev_priv(dev);
2130         struct mlx4_en_dev *mdev = priv->mdev;
2131         struct hwtstamp_config config;
2132
2133         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2134                 return -EFAULT;
2135
2136         /* reserved for future extensions */
2137         if (config.flags)
2138                 return -EINVAL;
2139
2140         /* device doesn't support time stamping */
2141         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2142                 return -EINVAL;
2143
2144         /* TX HW timestamp */
2145         switch (config.tx_type) {
2146         case HWTSTAMP_TX_OFF:
2147         case HWTSTAMP_TX_ON:
2148                 break;
2149         default:
2150                 return -ERANGE;
2151         }
2152
2153         /* RX HW timestamp */
2154         switch (config.rx_filter) {
2155         case HWTSTAMP_FILTER_NONE:
2156                 break;
2157         case HWTSTAMP_FILTER_ALL:
2158         case HWTSTAMP_FILTER_SOME:
2159         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2160         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2161         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2162         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2163         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2164         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2165         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2166         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2167         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2168         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2169         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2170         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2171                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2172                 break;
2173         default:
2174                 return -ERANGE;
2175         }
2176
2177         if (mlx4_en_reset_config(dev, config, dev->features)) {
2178                 config.tx_type = HWTSTAMP_TX_OFF;
2179                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2180         }
2181
2182         return copy_to_user(ifr->ifr_data, &config,
2183                             sizeof(config)) ? -EFAULT : 0;
2184 }
2185
2186 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2187 {
2188         struct mlx4_en_priv *priv = netdev_priv(dev);
2189
2190         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2191                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2192 }
2193
2194 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2195 {
2196         switch (cmd) {
2197         case SIOCSHWTSTAMP:
2198                 return mlx4_en_hwtstamp_set(dev, ifr);
2199         case SIOCGHWTSTAMP:
2200                 return mlx4_en_hwtstamp_get(dev, ifr);
2201         default:
2202                 return -EOPNOTSUPP;
2203         }
2204 }
2205
2206 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2207                                               netdev_features_t features)
2208 {
2209         struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2210         struct mlx4_en_dev *mdev = en_priv->mdev;
2211
2212         /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2213          * enable/disable make sure S-TAG flag is always in same state as
2214          * C-TAG.
2215          */
2216         if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2217             !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2218                 features |= NETIF_F_HW_VLAN_STAG_RX;
2219         else
2220                 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2221
2222         return features;
2223 }
2224
2225 static int mlx4_en_set_features(struct net_device *netdev,
2226                 netdev_features_t features)
2227 {
2228         struct mlx4_en_priv *priv = netdev_priv(netdev);
2229         bool reset = false;
2230         int ret = 0;
2231
2232         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2233                 en_info(priv, "Turn %s RX-FCS\n",
2234                         (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2235                 reset = true;
2236         }
2237
2238         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2239                 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2240
2241                 en_info(priv, "Turn %s RX-ALL\n",
2242                         ignore_fcs_value ? "ON" : "OFF");
2243                 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2244                                               priv->port, ignore_fcs_value);
2245                 if (ret)
2246                         return ret;
2247         }
2248
2249         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2250                 en_info(priv, "Turn %s RX vlan strip offload\n",
2251                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2252                 reset = true;
2253         }
2254
2255         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2256                 en_info(priv, "Turn %s TX vlan strip offload\n",
2257                         (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2258
2259         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2260                 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2261                         (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2262
2263         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2264                 en_info(priv, "Turn %s loopback\n",
2265                         (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2266                 mlx4_en_update_loopback_state(netdev, features);
2267         }
2268
2269         if (reset) {
2270                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2271                                            features);
2272                 if (ret)
2273                         return ret;
2274         }
2275
2276         return 0;
2277 }
2278
2279 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2280 {
2281         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2282         struct mlx4_en_dev *mdev = en_priv->mdev;
2283         u64 mac_u64 = mlx4_mac_to_u64(mac);
2284
2285         if (is_multicast_ether_addr(mac))
2286                 return -EINVAL;
2287
2288         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2289 }
2290
2291 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2292 {
2293         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2294         struct mlx4_en_dev *mdev = en_priv->mdev;
2295
2296         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2297 }
2298
2299 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2300                                int max_tx_rate)
2301 {
2302         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2303         struct mlx4_en_dev *mdev = en_priv->mdev;
2304
2305         return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2306                                 max_tx_rate);
2307 }
2308
2309 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2310 {
2311         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2312         struct mlx4_en_dev *mdev = en_priv->mdev;
2313
2314         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2315 }
2316
2317 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2318 {
2319         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2320         struct mlx4_en_dev *mdev = en_priv->mdev;
2321
2322         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2323 }
2324
2325 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2326 {
2327         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2328         struct mlx4_en_dev *mdev = en_priv->mdev;
2329
2330         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2331 }
2332
2333 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2334                                 struct ifla_vf_stats *vf_stats)
2335 {
2336         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2337         struct mlx4_en_dev *mdev = en_priv->mdev;
2338
2339         return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2340 }
2341
2342 #define PORT_ID_BYTE_LEN 8
2343 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2344                                     struct netdev_phys_item_id *ppid)
2345 {
2346         struct mlx4_en_priv *priv = netdev_priv(dev);
2347         struct mlx4_dev *mdev = priv->mdev->dev;
2348         int i;
2349         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2350
2351         if (!phys_port_id)
2352                 return -EOPNOTSUPP;
2353
2354         ppid->id_len = sizeof(phys_port_id);
2355         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2356                 ppid->id[i] =  phys_port_id & 0xff;
2357                 phys_port_id >>= 8;
2358         }
2359         return 0;
2360 }
2361
2362 #ifdef CONFIG_MLX4_EN_VXLAN
2363 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2364 {
2365         int ret;
2366         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2367                                                  vxlan_add_task);
2368
2369         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2370         if (ret)
2371                 goto out;
2372
2373         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2374                                   VXLAN_STEER_BY_OUTER_MAC, 1);
2375 out:
2376         if (ret) {
2377                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2378                 return;
2379         }
2380
2381         /* set offloads */
2382         priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2383                                       NETIF_F_RXCSUM |
2384                                       NETIF_F_TSO | NETIF_F_TSO6 |
2385                                       NETIF_F_GSO_UDP_TUNNEL |
2386                                       NETIF_F_GSO_UDP_TUNNEL_CSUM |
2387                                       NETIF_F_GSO_PARTIAL;
2388 }
2389
2390 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2391 {
2392         int ret;
2393         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2394                                                  vxlan_del_task);
2395         /* unset offloads */
2396         priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2397                                         NETIF_F_RXCSUM |
2398                                         NETIF_F_TSO | NETIF_F_TSO6 |
2399                                         NETIF_F_GSO_UDP_TUNNEL |
2400                                         NETIF_F_GSO_UDP_TUNNEL_CSUM |
2401                                         NETIF_F_GSO_PARTIAL);
2402
2403         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2404                                   VXLAN_STEER_BY_OUTER_MAC, 0);
2405         if (ret)
2406                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2407
2408         priv->vxlan_port = 0;
2409 }
2410
2411 static void mlx4_en_add_vxlan_port(struct  net_device *dev,
2412                                    sa_family_t sa_family, __be16 port)
2413 {
2414         struct mlx4_en_priv *priv = netdev_priv(dev);
2415         __be16 current_port;
2416
2417         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2418                 return;
2419
2420         if (sa_family == AF_INET6)
2421                 return;
2422
2423         current_port = priv->vxlan_port;
2424         if (current_port && current_port != port) {
2425                 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2426                         ntohs(current_port), ntohs(port));
2427                 return;
2428         }
2429
2430         priv->vxlan_port = port;
2431         queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2432 }
2433
2434 static void mlx4_en_del_vxlan_port(struct  net_device *dev,
2435                                    sa_family_t sa_family, __be16 port)
2436 {
2437         struct mlx4_en_priv *priv = netdev_priv(dev);
2438         __be16 current_port;
2439
2440         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2441                 return;
2442
2443         if (sa_family == AF_INET6)
2444                 return;
2445
2446         current_port = priv->vxlan_port;
2447         if (current_port != port) {
2448                 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2449                 return;
2450         }
2451
2452         queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2453 }
2454
2455 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2456                                                 struct net_device *dev,
2457                                                 netdev_features_t features)
2458 {
2459         features = vlan_features_check(skb, features);
2460         features = vxlan_features_check(skb, features);
2461
2462         /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2463          * support inner IPv6 checksums and segmentation so  we need to
2464          * strip that feature if this is an IPv6 encapsulated frame.
2465          */
2466         if (skb->encapsulation &&
2467             (skb->ip_summed == CHECKSUM_PARTIAL)) {
2468                 struct mlx4_en_priv *priv = netdev_priv(dev);
2469
2470                 if (!priv->vxlan_port ||
2471                     (ip_hdr(skb)->version != 4) ||
2472                     (udp_hdr(skb)->dest != priv->vxlan_port))
2473                         features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2474         }
2475
2476         return features;
2477 }
2478 #endif
2479
2480 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2481 {
2482         struct mlx4_en_priv *priv = netdev_priv(dev);
2483         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index];
2484         struct mlx4_update_qp_params params;
2485         int err;
2486
2487         if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2488                 return -EOPNOTSUPP;
2489
2490         /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2491         if (maxrate >> 12) {
2492                 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2493                 params.rate_val  = maxrate / 1000;
2494         } else if (maxrate) {
2495                 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2496                 params.rate_val  = maxrate;
2497         } else { /* zero serves to revoke the QP rate-limitation */
2498                 params.rate_unit = 0;
2499                 params.rate_val  = 0;
2500         }
2501
2502         err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2503                              &params);
2504         return err;
2505 }
2506
2507 static const struct net_device_ops mlx4_netdev_ops = {
2508         .ndo_open               = mlx4_en_open,
2509         .ndo_stop               = mlx4_en_close,
2510         .ndo_start_xmit         = mlx4_en_xmit,
2511         .ndo_select_queue       = mlx4_en_select_queue,
2512         .ndo_get_stats64        = mlx4_en_get_stats64,
2513         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2514         .ndo_set_mac_address    = mlx4_en_set_mac,
2515         .ndo_validate_addr      = eth_validate_addr,
2516         .ndo_change_mtu         = mlx4_en_change_mtu,
2517         .ndo_do_ioctl           = mlx4_en_ioctl,
2518         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2519         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2520         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2521 #ifdef CONFIG_NET_POLL_CONTROLLER
2522         .ndo_poll_controller    = mlx4_en_netpoll,
2523 #endif
2524         .ndo_set_features       = mlx4_en_set_features,
2525         .ndo_fix_features       = mlx4_en_fix_features,
2526         .ndo_setup_tc           = __mlx4_en_setup_tc,
2527 #ifdef CONFIG_RFS_ACCEL
2528         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2529 #endif
2530         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2531 #ifdef CONFIG_MLX4_EN_VXLAN
2532         .ndo_add_vxlan_port     = mlx4_en_add_vxlan_port,
2533         .ndo_del_vxlan_port     = mlx4_en_del_vxlan_port,
2534         .ndo_features_check     = mlx4_en_features_check,
2535 #endif
2536         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2537 };
2538
2539 static const struct net_device_ops mlx4_netdev_ops_master = {
2540         .ndo_open               = mlx4_en_open,
2541         .ndo_stop               = mlx4_en_close,
2542         .ndo_start_xmit         = mlx4_en_xmit,
2543         .ndo_select_queue       = mlx4_en_select_queue,
2544         .ndo_get_stats64        = mlx4_en_get_stats64,
2545         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2546         .ndo_set_mac_address    = mlx4_en_set_mac,
2547         .ndo_validate_addr      = eth_validate_addr,
2548         .ndo_change_mtu         = mlx4_en_change_mtu,
2549         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2550         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2551         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2552         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2553         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2554         .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2555         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2556         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2557         .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2558         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2559 #ifdef CONFIG_NET_POLL_CONTROLLER
2560         .ndo_poll_controller    = mlx4_en_netpoll,
2561 #endif
2562         .ndo_set_features       = mlx4_en_set_features,
2563         .ndo_fix_features       = mlx4_en_fix_features,
2564         .ndo_setup_tc           = __mlx4_en_setup_tc,
2565 #ifdef CONFIG_RFS_ACCEL
2566         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2567 #endif
2568         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2569 #ifdef CONFIG_MLX4_EN_VXLAN
2570         .ndo_add_vxlan_port     = mlx4_en_add_vxlan_port,
2571         .ndo_del_vxlan_port     = mlx4_en_del_vxlan_port,
2572         .ndo_features_check     = mlx4_en_features_check,
2573 #endif
2574         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2575 };
2576
2577 struct mlx4_en_bond {
2578         struct work_struct work;
2579         struct mlx4_en_priv *priv;
2580         int is_bonded;
2581         struct mlx4_port_map port_map;
2582 };
2583
2584 static void mlx4_en_bond_work(struct work_struct *work)
2585 {
2586         struct mlx4_en_bond *bond = container_of(work,
2587                                                      struct mlx4_en_bond,
2588                                                      work);
2589         int err = 0;
2590         struct mlx4_dev *dev = bond->priv->mdev->dev;
2591
2592         if (bond->is_bonded) {
2593                 if (!mlx4_is_bonded(dev)) {
2594                         err = mlx4_bond(dev);
2595                         if (err)
2596                                 en_err(bond->priv, "Fail to bond device\n");
2597                 }
2598                 if (!err) {
2599                         err = mlx4_port_map_set(dev, &bond->port_map);
2600                         if (err)
2601                                 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2602                                        bond->port_map.port1,
2603                                        bond->port_map.port2,
2604                                        err);
2605                 }
2606         } else if (mlx4_is_bonded(dev)) {
2607                 err = mlx4_unbond(dev);
2608                 if (err)
2609                         en_err(bond->priv, "Fail to unbond device\n");
2610         }
2611         dev_put(bond->priv->dev);
2612         kfree(bond);
2613 }
2614
2615 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
2616                                    u8 v2p_p1, u8 v2p_p2)
2617 {
2618         struct mlx4_en_bond *bond = NULL;
2619
2620         bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
2621         if (!bond)
2622                 return -ENOMEM;
2623
2624         INIT_WORK(&bond->work, mlx4_en_bond_work);
2625         bond->priv = priv;
2626         bond->is_bonded = is_bonded;
2627         bond->port_map.port1 = v2p_p1;
2628         bond->port_map.port2 = v2p_p2;
2629         dev_hold(priv->dev);
2630         queue_work(priv->mdev->workqueue, &bond->work);
2631         return 0;
2632 }
2633
2634 int mlx4_en_netdev_event(struct notifier_block *this,
2635                          unsigned long event, void *ptr)
2636 {
2637         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2638         u8 port = 0;
2639         struct mlx4_en_dev *mdev;
2640         struct mlx4_dev *dev;
2641         int i, num_eth_ports = 0;
2642         bool do_bond = true;
2643         struct mlx4_en_priv *priv;
2644         u8 v2p_port1 = 0;
2645         u8 v2p_port2 = 0;
2646
2647         if (!net_eq(dev_net(ndev), &init_net))
2648                 return NOTIFY_DONE;
2649
2650         mdev = container_of(this, struct mlx4_en_dev, nb);
2651         dev = mdev->dev;
2652
2653         /* Go into this mode only when two network devices set on two ports
2654          * of the same mlx4 device are slaves of the same bonding master
2655          */
2656         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2657                 ++num_eth_ports;
2658                 if (!port && (mdev->pndev[i] == ndev))
2659                         port = i;
2660                 mdev->upper[i] = mdev->pndev[i] ?
2661                         netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2662                 /* condition not met: network device is a slave */
2663                 if (!mdev->upper[i])
2664                         do_bond = false;
2665                 if (num_eth_ports < 2)
2666                         continue;
2667                 /* condition not met: same master */
2668                 if (mdev->upper[i] != mdev->upper[i-1])
2669                         do_bond = false;
2670         }
2671         /* condition not met: 2 salves */
2672         do_bond = (num_eth_ports ==  2) ? do_bond : false;
2673
2674         /* handle only events that come with enough info */
2675         if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2676                 return NOTIFY_DONE;
2677
2678         priv = netdev_priv(ndev);
2679         if (do_bond) {
2680                 struct netdev_notifier_bonding_info *notifier_info = ptr;
2681                 struct netdev_bonding_info *bonding_info =
2682                         &notifier_info->bonding_info;
2683
2684                 /* required mode 1, 2 or 4 */
2685                 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2686                     (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2687                     (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2688                         do_bond = false;
2689
2690                 /* require exactly 2 slaves */
2691                 if (bonding_info->master.num_slaves != 2)
2692                         do_bond = false;
2693
2694                 /* calc v2p */
2695                 if (do_bond) {
2696                         if (bonding_info->master.bond_mode ==
2697                             BOND_MODE_ACTIVEBACKUP) {
2698                                 /* in active-backup mode virtual ports are
2699                                  * mapped to the physical port of the active
2700                                  * slave */
2701                                 if (bonding_info->slave.state ==
2702                                     BOND_STATE_BACKUP) {
2703                                         if (port == 1) {
2704                                                 v2p_port1 = 2;
2705                                                 v2p_port2 = 2;
2706                                         } else {
2707                                                 v2p_port1 = 1;
2708                                                 v2p_port2 = 1;
2709                                         }
2710                                 } else { /* BOND_STATE_ACTIVE */
2711                                         if (port == 1) {
2712                                                 v2p_port1 = 1;
2713                                                 v2p_port2 = 1;
2714                                         } else {
2715                                                 v2p_port1 = 2;
2716                                                 v2p_port2 = 2;
2717                                         }
2718                                 }
2719                         } else { /* Active-Active */
2720                                 /* in active-active mode a virtual port is
2721                                  * mapped to the native physical port if and only
2722                                  * if the physical port is up */
2723                                 __s8 link = bonding_info->slave.link;
2724
2725                                 if (port == 1)
2726                                         v2p_port2 = 2;
2727                                 else
2728                                         v2p_port1 = 1;
2729                                 if ((link == BOND_LINK_UP) ||
2730                                     (link == BOND_LINK_FAIL)) {
2731                                         if (port == 1)
2732                                                 v2p_port1 = 1;
2733                                         else
2734                                                 v2p_port2 = 2;
2735                                 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
2736                                         if (port == 1)
2737                                                 v2p_port1 = 2;
2738                                         else
2739                                                 v2p_port2 = 1;
2740                                 }
2741                         }
2742                 }
2743         }
2744
2745         mlx4_en_queue_bond_work(priv, do_bond,
2746                                 v2p_port1, v2p_port2);
2747
2748         return NOTIFY_DONE;
2749 }
2750
2751 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
2752                                      struct mlx4_en_stats_bitmap *stats_bitmap,
2753                                      u8 rx_ppp, u8 rx_pause,
2754                                      u8 tx_ppp, u8 tx_pause)
2755 {
2756         int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
2757
2758         if (!mlx4_is_slave(dev) &&
2759             (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
2760                 mutex_lock(&stats_bitmap->mutex);
2761                 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
2762
2763                 if (rx_ppp)
2764                         bitmap_set(stats_bitmap->bitmap, last_i,
2765                                    NUM_FLOW_PRIORITY_STATS_RX);
2766                 last_i += NUM_FLOW_PRIORITY_STATS_RX;
2767
2768                 if (rx_pause && !(rx_ppp))
2769                         bitmap_set(stats_bitmap->bitmap, last_i,
2770                                    NUM_FLOW_STATS_RX);
2771                 last_i += NUM_FLOW_STATS_RX;
2772
2773                 if (tx_ppp)
2774                         bitmap_set(stats_bitmap->bitmap, last_i,
2775                                    NUM_FLOW_PRIORITY_STATS_TX);
2776                 last_i += NUM_FLOW_PRIORITY_STATS_TX;
2777
2778                 if (tx_pause && !(tx_ppp))
2779                         bitmap_set(stats_bitmap->bitmap, last_i,
2780                                    NUM_FLOW_STATS_TX);
2781                 last_i += NUM_FLOW_STATS_TX;
2782
2783                 mutex_unlock(&stats_bitmap->mutex);
2784         }
2785 }
2786
2787 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
2788                               struct mlx4_en_stats_bitmap *stats_bitmap,
2789                               u8 rx_ppp, u8 rx_pause,
2790                               u8 tx_ppp, u8 tx_pause)
2791 {
2792         int last_i = 0;
2793
2794         mutex_init(&stats_bitmap->mutex);
2795         bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
2796
2797         if (mlx4_is_slave(dev)) {
2798                 bitmap_set(stats_bitmap->bitmap, last_i +
2799                                          MLX4_FIND_NETDEV_STAT(rx_packets), 1);
2800                 bitmap_set(stats_bitmap->bitmap, last_i +
2801                                          MLX4_FIND_NETDEV_STAT(tx_packets), 1);
2802                 bitmap_set(stats_bitmap->bitmap, last_i +
2803                                          MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
2804                 bitmap_set(stats_bitmap->bitmap, last_i +
2805                                          MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
2806                 bitmap_set(stats_bitmap->bitmap, last_i +
2807                                          MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
2808                 bitmap_set(stats_bitmap->bitmap, last_i +
2809                                          MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
2810         } else {
2811                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
2812         }
2813         last_i += NUM_MAIN_STATS;
2814
2815         bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
2816         last_i += NUM_PORT_STATS;
2817
2818         if (mlx4_is_master(dev))
2819                 bitmap_set(stats_bitmap->bitmap, last_i,
2820                            NUM_PF_STATS);
2821         last_i += NUM_PF_STATS;
2822
2823         mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
2824                                         rx_ppp, rx_pause,
2825                                         tx_ppp, tx_pause);
2826         last_i += NUM_FLOW_STATS;
2827
2828         if (!mlx4_is_slave(dev))
2829                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
2830 }
2831
2832 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2833                         struct mlx4_en_port_profile *prof)
2834 {
2835         struct net_device *dev;
2836         struct mlx4_en_priv *priv;
2837         int i;
2838         int err;
2839
2840         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2841                                  MAX_TX_RINGS, MAX_RX_RINGS);
2842         if (dev == NULL)
2843                 return -ENOMEM;
2844
2845         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2846         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2847
2848         SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
2849         dev->dev_port = port - 1;
2850
2851         /*
2852          * Initialize driver private data
2853          */
2854
2855         priv = netdev_priv(dev);
2856         memset(priv, 0, sizeof(struct mlx4_en_priv));
2857         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
2858         spin_lock_init(&priv->stats_lock);
2859         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2860         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2861         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2862         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2863         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2864 #ifdef CONFIG_MLX4_EN_VXLAN
2865         INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
2866         INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
2867 #endif
2868 #ifdef CONFIG_RFS_ACCEL
2869         INIT_LIST_HEAD(&priv->filters);
2870         spin_lock_init(&priv->filters_lock);
2871 #endif
2872
2873         priv->dev = dev;
2874         priv->mdev = mdev;
2875         priv->ddev = &mdev->pdev->dev;
2876         priv->prof = prof;
2877         priv->port = port;
2878         priv->port_up = false;
2879         priv->flags = prof->flags;
2880         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
2881         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2882                         MLX4_WQE_CTRL_SOLICITED);
2883         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2884         priv->tx_ring_num = prof->tx_ring_num;
2885         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
2886         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
2887
2888         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2889                                 GFP_KERNEL);
2890         if (!priv->tx_ring) {
2891                 err = -ENOMEM;
2892                 goto out;
2893         }
2894         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2895                               GFP_KERNEL);
2896         if (!priv->tx_cq) {
2897                 err = -ENOMEM;
2898                 goto out;
2899         }
2900         priv->rx_ring_num = prof->rx_ring_num;
2901         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2902         priv->cqe_size = mdev->dev->caps.cqe_size;
2903         priv->mac_index = -1;
2904         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2905 #ifdef CONFIG_MLX4_EN_DCB
2906         if (!mlx4_is_slave(priv->mdev->dev)) {
2907                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2908                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2909                 } else {
2910                         en_info(priv, "enabling only PFC DCB ops\n");
2911                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2912                 }
2913         }
2914 #endif
2915
2916         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2917                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2918
2919         /* Query for default mac and max mtu */
2920         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2921
2922         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
2923             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
2924                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
2925
2926         /* Set default MAC */
2927         dev->addr_len = ETH_ALEN;
2928         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2929         if (!is_valid_ether_addr(dev->dev_addr)) {
2930                 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2931                        priv->port, dev->dev_addr);
2932                 err = -EINVAL;
2933                 goto out;
2934         } else if (mlx4_is_slave(priv->mdev->dev) &&
2935                    (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
2936                 /* Random MAC was assigned in mlx4_slave_cap
2937                  * in mlx4_core module
2938                  */
2939                 dev->addr_assign_type |= NET_ADDR_RANDOM;
2940                 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2941         }
2942
2943         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
2944
2945         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2946                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2947         err = mlx4_en_alloc_resources(priv);
2948         if (err)
2949                 goto out;
2950
2951         /* Initialize time stamping config */
2952         priv->hwtstamp_config.flags = 0;
2953         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2954         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2955
2956         /* Allocate page for receive rings */
2957         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2958                                 MLX4_EN_PAGE_SIZE);
2959         if (err) {
2960                 en_err(priv, "Failed to allocate page for rx qps\n");
2961                 goto out;
2962         }
2963         priv->allocated = 1;
2964
2965         /*
2966          * Initialize netdev entry points
2967          */
2968         if (mlx4_is_master(priv->mdev->dev))
2969                 dev->netdev_ops = &mlx4_netdev_ops_master;
2970         else
2971                 dev->netdev_ops = &mlx4_netdev_ops;
2972         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2973         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2974         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2975
2976         dev->ethtool_ops = &mlx4_en_ethtool_ops;
2977
2978         /*
2979          * Set driver features
2980          */
2981         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2982         if (mdev->LSO_support)
2983                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2984
2985         dev->vlan_features = dev->hw_features;
2986
2987         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2988         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2989                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2990                         NETIF_F_HW_VLAN_CTAG_FILTER;
2991         dev->hw_features |= NETIF_F_LOOPBACK |
2992                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
2993
2994         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
2995                 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
2996                         NETIF_F_HW_VLAN_STAG_FILTER;
2997                 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
2998         }
2999
3000         if (mlx4_is_slave(mdev->dev)) {
3001                 int phv;
3002
3003                 err = get_phv_bit(mdev->dev, port, &phv);
3004                 if (!err && phv) {
3005                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3006                         priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3007                 }
3008         } else {
3009                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3010                     !(mdev->dev->caps.flags2 &
3011                       MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3012                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3013         }
3014
3015         if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3016                 dev->hw_features |= NETIF_F_RXFCS;
3017
3018         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3019                 dev->hw_features |= NETIF_F_RXALL;
3020
3021         if (mdev->dev->caps.steering_mode ==
3022             MLX4_STEERING_MODE_DEVICE_MANAGED &&
3023             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3024                 dev->hw_features |= NETIF_F_NTUPLE;
3025
3026         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3027                 dev->priv_flags |= IFF_UNICAST_FLT;
3028
3029         /* Setting a default hash function value */
3030         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3031                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3032         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3033                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3034         } else {
3035                 en_warn(priv,
3036                         "No RSS hash capabilities exposed, using Toeplitz\n");
3037                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3038         }
3039
3040         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3041                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3042                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3043                                     NETIF_F_GSO_PARTIAL;
3044                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL |
3045                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3046                                     NETIF_F_GSO_PARTIAL;
3047                 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3048         }
3049
3050         mdev->pndev[port] = dev;
3051         mdev->upper[port] = NULL;
3052
3053         netif_carrier_off(dev);
3054         mlx4_en_set_default_moderation(priv);
3055
3056         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
3057         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3058
3059         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3060
3061         /* Configure port */
3062         mlx4_en_calc_rx_buf(dev);
3063         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3064                                     priv->rx_skb_size + ETH_FCS_LEN,
3065                                     prof->tx_pause, prof->tx_ppp,
3066                                     prof->rx_pause, prof->rx_ppp);
3067         if (err) {
3068                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3069                        priv->port, err);
3070                 goto out;
3071         }
3072
3073         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3074                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3075                 if (err) {
3076                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3077                                err);
3078                         goto out;
3079                 }
3080         }
3081
3082         /* Init port */
3083         en_warn(priv, "Initializing port\n");
3084         err = mlx4_INIT_PORT(mdev->dev, priv->port);
3085         if (err) {
3086                 en_err(priv, "Failed Initializing port\n");
3087                 goto out;
3088         }
3089         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3090
3091         /* Initialize time stamp mechanism */
3092         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3093                 mlx4_en_init_timestamp(mdev);
3094
3095         queue_delayed_work(mdev->workqueue, &priv->service_task,
3096                            SERVICE_TASK_DELAY);
3097
3098         mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3099                                  mdev->profile.prof[priv->port].rx_ppp,
3100                                  mdev->profile.prof[priv->port].rx_pause,
3101                                  mdev->profile.prof[priv->port].tx_ppp,
3102                                  mdev->profile.prof[priv->port].tx_pause);
3103
3104         err = register_netdev(dev);
3105         if (err) {
3106                 en_err(priv, "Netdev registration failed for port %d\n", port);
3107                 goto out;
3108         }
3109
3110         priv->registered = 1;
3111         devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
3112                                   dev);
3113
3114         return 0;
3115
3116 out:
3117         mlx4_en_destroy_netdev(dev);
3118         return err;
3119 }
3120
3121 int mlx4_en_reset_config(struct net_device *dev,
3122                          struct hwtstamp_config ts_config,
3123                          netdev_features_t features)
3124 {
3125         struct mlx4_en_priv *priv = netdev_priv(dev);
3126         struct mlx4_en_dev *mdev = priv->mdev;
3127         int port_up = 0;
3128         int err = 0;
3129
3130         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3131             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3132             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3133             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3134                 return 0; /* Nothing to change */
3135
3136         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3137             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3138             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3139                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3140                 return -EINVAL;
3141         }
3142
3143         mutex_lock(&mdev->state_lock);
3144         if (priv->port_up) {
3145                 port_up = 1;
3146                 mlx4_en_stop_port(dev, 1);
3147         }
3148
3149         mlx4_en_free_resources(priv);
3150
3151         en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
3152                 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX));
3153
3154         priv->hwtstamp_config.tx_type = ts_config.tx_type;
3155         priv->hwtstamp_config.rx_filter = ts_config.rx_filter;
3156
3157         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3158                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3159                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3160                 else
3161                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3162         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3163                 /* RX time-stamping is OFF, update the RX vlan offload
3164                  * to the latest wanted state
3165                  */
3166                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3167                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3168                 else
3169                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3170         }
3171
3172         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3173                 if (features & NETIF_F_RXFCS)
3174                         dev->features |= NETIF_F_RXFCS;
3175                 else
3176                         dev->features &= ~NETIF_F_RXFCS;
3177         }
3178
3179         /* RX vlan offload and RX time-stamping can't co-exist !
3180          * Regardless of the caller's choice,
3181          * Turn Off RX vlan offload in case of time-stamping is ON
3182          */
3183         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3184                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3185                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3186                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3187         }
3188
3189         err = mlx4_en_alloc_resources(priv);
3190         if (err) {
3191                 en_err(priv, "Failed reallocating port resources\n");
3192                 goto out;
3193         }
3194         if (port_up) {
3195                 err = mlx4_en_start_port(dev);
3196                 if (err)
3197                         en_err(priv, "Failed starting port\n");
3198         }
3199
3200 out:
3201         mutex_unlock(&mdev->state_lock);
3202         netdev_features_change(dev);
3203         return err;
3204 }