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 static 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 static 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 static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2048                              struct mlx4_en_priv *src,
2049                              struct mlx4_en_port_profile *prof)
2050 {
2051         memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2052                sizeof(dst->hwtstamp_config));
2053         dst->num_tx_rings_p_up = src->mdev->profile.num_tx_rings_p_up;
2054         dst->tx_ring_num = prof->tx_ring_num;
2055         dst->rx_ring_num = prof->rx_ring_num;
2056         dst->flags = prof->flags;
2057         dst->mdev = src->mdev;
2058         dst->port = src->port;
2059         dst->dev = src->dev;
2060         dst->prof = prof;
2061         dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2062                                          DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2063
2064         dst->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2065                                 GFP_KERNEL);
2066         if (!dst->tx_ring)
2067                 return -ENOMEM;
2068
2069         dst->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2070                               GFP_KERNEL);
2071         if (!dst->tx_cq) {
2072                 kfree(dst->tx_ring);
2073                 return -ENOMEM;
2074         }
2075         return 0;
2076 }
2077
2078 static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2079                                 struct mlx4_en_priv *src)
2080 {
2081         memcpy(dst->rx_ring, src->rx_ring,
2082                sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2083         memcpy(dst->rx_cq, src->rx_cq,
2084                sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2085         memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2086                sizeof(dst->hwtstamp_config));
2087         dst->tx_ring_num = src->tx_ring_num;
2088         dst->rx_ring_num = src->rx_ring_num;
2089         dst->tx_ring = src->tx_ring;
2090         dst->tx_cq = src->tx_cq;
2091         memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2092 }
2093
2094 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2095                                 struct mlx4_en_priv *tmp,
2096                                 struct mlx4_en_port_profile *prof)
2097 {
2098         mlx4_en_copy_priv(tmp, priv, prof);
2099
2100         if (mlx4_en_alloc_resources(tmp)) {
2101                 en_warn(priv,
2102                         "%s: Resource allocation failed, using previous configuration\n",
2103                         __func__);
2104                 kfree(tmp->tx_ring);
2105                 kfree(tmp->tx_cq);
2106                 return -ENOMEM;
2107         }
2108         return 0;
2109 }
2110
2111 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2112                                     struct mlx4_en_priv *tmp)
2113 {
2114         mlx4_en_free_resources(priv);
2115         mlx4_en_update_priv(priv, tmp);
2116 }
2117
2118 void mlx4_en_destroy_netdev(struct net_device *dev)
2119 {
2120         struct mlx4_en_priv *priv = netdev_priv(dev);
2121         struct mlx4_en_dev *mdev = priv->mdev;
2122         bool shutdown = mdev->dev->persist->interface_state &
2123                                             MLX4_INTERFACE_STATE_SHUTDOWN;
2124
2125         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2126
2127         /* Unregister device - this will close the port if it was up */
2128         if (priv->registered) {
2129                 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
2130                                                               priv->port));
2131                 if (shutdown)
2132                         mlx4_en_shutdown(dev);
2133                 else
2134                         unregister_netdev(dev);
2135         }
2136
2137         if (priv->allocated)
2138                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2139
2140         cancel_delayed_work(&priv->stats_task);
2141         cancel_delayed_work(&priv->service_task);
2142         /* flush any pending task for this netdev */
2143         flush_workqueue(mdev->workqueue);
2144
2145         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2146                 mlx4_en_remove_timestamp(mdev);
2147
2148         /* Detach the netdev so tasks would not attempt to access it */
2149         mutex_lock(&mdev->state_lock);
2150         mdev->pndev[priv->port] = NULL;
2151         mdev->upper[priv->port] = NULL;
2152         mutex_unlock(&mdev->state_lock);
2153
2154 #ifdef CONFIG_RFS_ACCEL
2155         mlx4_en_cleanup_filters(priv);
2156 #endif
2157
2158         mlx4_en_free_resources(priv);
2159
2160         kfree(priv->tx_ring);
2161         kfree(priv->tx_cq);
2162
2163         if (!shutdown)
2164                 free_netdev(dev);
2165 }
2166
2167 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2168 {
2169         struct mlx4_en_priv *priv = netdev_priv(dev);
2170         struct mlx4_en_dev *mdev = priv->mdev;
2171         int err = 0;
2172
2173         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2174                  dev->mtu, new_mtu);
2175
2176         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2177                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2178                 return -EPERM;
2179         }
2180         dev->mtu = new_mtu;
2181
2182         if (netif_running(dev)) {
2183                 mutex_lock(&mdev->state_lock);
2184                 if (!mdev->device_up) {
2185                         /* NIC is probably restarting - let watchdog task reset
2186                          * the port */
2187                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2188                 } else {
2189                         mlx4_en_stop_port(dev, 1);
2190                         err = mlx4_en_start_port(dev);
2191                         if (err) {
2192                                 en_err(priv, "Failed restarting port:%d\n",
2193                                          priv->port);
2194                                 queue_work(mdev->workqueue, &priv->watchdog_task);
2195                         }
2196                 }
2197                 mutex_unlock(&mdev->state_lock);
2198         }
2199         return 0;
2200 }
2201
2202 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2203 {
2204         struct mlx4_en_priv *priv = netdev_priv(dev);
2205         struct mlx4_en_dev *mdev = priv->mdev;
2206         struct hwtstamp_config config;
2207
2208         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2209                 return -EFAULT;
2210
2211         /* reserved for future extensions */
2212         if (config.flags)
2213                 return -EINVAL;
2214
2215         /* device doesn't support time stamping */
2216         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2217                 return -EINVAL;
2218
2219         /* TX HW timestamp */
2220         switch (config.tx_type) {
2221         case HWTSTAMP_TX_OFF:
2222         case HWTSTAMP_TX_ON:
2223                 break;
2224         default:
2225                 return -ERANGE;
2226         }
2227
2228         /* RX HW timestamp */
2229         switch (config.rx_filter) {
2230         case HWTSTAMP_FILTER_NONE:
2231                 break;
2232         case HWTSTAMP_FILTER_ALL:
2233         case HWTSTAMP_FILTER_SOME:
2234         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2235         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2236         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2237         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2238         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2239         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2240         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2241         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2242         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2243         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2244         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2245         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2246                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2247                 break;
2248         default:
2249                 return -ERANGE;
2250         }
2251
2252         if (mlx4_en_reset_config(dev, config, dev->features)) {
2253                 config.tx_type = HWTSTAMP_TX_OFF;
2254                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2255         }
2256
2257         return copy_to_user(ifr->ifr_data, &config,
2258                             sizeof(config)) ? -EFAULT : 0;
2259 }
2260
2261 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2262 {
2263         struct mlx4_en_priv *priv = netdev_priv(dev);
2264
2265         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2266                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2267 }
2268
2269 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2270 {
2271         switch (cmd) {
2272         case SIOCSHWTSTAMP:
2273                 return mlx4_en_hwtstamp_set(dev, ifr);
2274         case SIOCGHWTSTAMP:
2275                 return mlx4_en_hwtstamp_get(dev, ifr);
2276         default:
2277                 return -EOPNOTSUPP;
2278         }
2279 }
2280
2281 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2282                                               netdev_features_t features)
2283 {
2284         struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2285         struct mlx4_en_dev *mdev = en_priv->mdev;
2286
2287         /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2288          * enable/disable make sure S-TAG flag is always in same state as
2289          * C-TAG.
2290          */
2291         if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2292             !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2293                 features |= NETIF_F_HW_VLAN_STAG_RX;
2294         else
2295                 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2296
2297         return features;
2298 }
2299
2300 static int mlx4_en_set_features(struct net_device *netdev,
2301                 netdev_features_t features)
2302 {
2303         struct mlx4_en_priv *priv = netdev_priv(netdev);
2304         bool reset = false;
2305         int ret = 0;
2306
2307         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2308                 en_info(priv, "Turn %s RX-FCS\n",
2309                         (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2310                 reset = true;
2311         }
2312
2313         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2314                 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2315
2316                 en_info(priv, "Turn %s RX-ALL\n",
2317                         ignore_fcs_value ? "ON" : "OFF");
2318                 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2319                                               priv->port, ignore_fcs_value);
2320                 if (ret)
2321                         return ret;
2322         }
2323
2324         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2325                 en_info(priv, "Turn %s RX vlan strip offload\n",
2326                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2327                 reset = true;
2328         }
2329
2330         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2331                 en_info(priv, "Turn %s TX vlan strip offload\n",
2332                         (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2333
2334         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2335                 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2336                         (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2337
2338         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2339                 en_info(priv, "Turn %s loopback\n",
2340                         (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2341                 mlx4_en_update_loopback_state(netdev, features);
2342         }
2343
2344         if (reset) {
2345                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2346                                            features);
2347                 if (ret)
2348                         return ret;
2349         }
2350
2351         return 0;
2352 }
2353
2354 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2355 {
2356         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2357         struct mlx4_en_dev *mdev = en_priv->mdev;
2358         u64 mac_u64 = mlx4_mac_to_u64(mac);
2359
2360         if (is_multicast_ether_addr(mac))
2361                 return -EINVAL;
2362
2363         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2364 }
2365
2366 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2367 {
2368         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2369         struct mlx4_en_dev *mdev = en_priv->mdev;
2370
2371         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2372 }
2373
2374 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2375                                int max_tx_rate)
2376 {
2377         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2378         struct mlx4_en_dev *mdev = en_priv->mdev;
2379
2380         return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2381                                 max_tx_rate);
2382 }
2383
2384 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2385 {
2386         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2387         struct mlx4_en_dev *mdev = en_priv->mdev;
2388
2389         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2390 }
2391
2392 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2393 {
2394         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2395         struct mlx4_en_dev *mdev = en_priv->mdev;
2396
2397         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2398 }
2399
2400 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2401 {
2402         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2403         struct mlx4_en_dev *mdev = en_priv->mdev;
2404
2405         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2406 }
2407
2408 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2409                                 struct ifla_vf_stats *vf_stats)
2410 {
2411         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2412         struct mlx4_en_dev *mdev = en_priv->mdev;
2413
2414         return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2415 }
2416
2417 #define PORT_ID_BYTE_LEN 8
2418 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2419                                     struct netdev_phys_item_id *ppid)
2420 {
2421         struct mlx4_en_priv *priv = netdev_priv(dev);
2422         struct mlx4_dev *mdev = priv->mdev->dev;
2423         int i;
2424         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2425
2426         if (!phys_port_id)
2427                 return -EOPNOTSUPP;
2428
2429         ppid->id_len = sizeof(phys_port_id);
2430         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2431                 ppid->id[i] =  phys_port_id & 0xff;
2432                 phys_port_id >>= 8;
2433         }
2434         return 0;
2435 }
2436
2437 #ifdef CONFIG_MLX4_EN_VXLAN
2438 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2439 {
2440         int ret;
2441         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2442                                                  vxlan_add_task);
2443
2444         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2445         if (ret)
2446                 goto out;
2447
2448         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2449                                   VXLAN_STEER_BY_OUTER_MAC, 1);
2450 out:
2451         if (ret) {
2452                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2453                 return;
2454         }
2455
2456         /* set offloads */
2457         priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2458                                       NETIF_F_RXCSUM |
2459                                       NETIF_F_TSO | NETIF_F_TSO6 |
2460                                       NETIF_F_GSO_UDP_TUNNEL |
2461                                       NETIF_F_GSO_UDP_TUNNEL_CSUM |
2462                                       NETIF_F_GSO_PARTIAL;
2463 }
2464
2465 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2466 {
2467         int ret;
2468         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2469                                                  vxlan_del_task);
2470         /* unset offloads */
2471         priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2472                                         NETIF_F_RXCSUM |
2473                                         NETIF_F_TSO | NETIF_F_TSO6 |
2474                                         NETIF_F_GSO_UDP_TUNNEL |
2475                                         NETIF_F_GSO_UDP_TUNNEL_CSUM |
2476                                         NETIF_F_GSO_PARTIAL);
2477
2478         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2479                                   VXLAN_STEER_BY_OUTER_MAC, 0);
2480         if (ret)
2481                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2482
2483         priv->vxlan_port = 0;
2484 }
2485
2486 static void mlx4_en_add_vxlan_port(struct  net_device *dev,
2487                                    sa_family_t sa_family, __be16 port)
2488 {
2489         struct mlx4_en_priv *priv = netdev_priv(dev);
2490         __be16 current_port;
2491
2492         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2493                 return;
2494
2495         if (sa_family == AF_INET6)
2496                 return;
2497
2498         current_port = priv->vxlan_port;
2499         if (current_port && current_port != port) {
2500                 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2501                         ntohs(current_port), ntohs(port));
2502                 return;
2503         }
2504
2505         priv->vxlan_port = port;
2506         queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2507 }
2508
2509 static void mlx4_en_del_vxlan_port(struct  net_device *dev,
2510                                    sa_family_t sa_family, __be16 port)
2511 {
2512         struct mlx4_en_priv *priv = netdev_priv(dev);
2513         __be16 current_port;
2514
2515         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2516                 return;
2517
2518         if (sa_family == AF_INET6)
2519                 return;
2520
2521         current_port = priv->vxlan_port;
2522         if (current_port != port) {
2523                 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2524                 return;
2525         }
2526
2527         queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2528 }
2529
2530 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2531                                                 struct net_device *dev,
2532                                                 netdev_features_t features)
2533 {
2534         features = vlan_features_check(skb, features);
2535         features = vxlan_features_check(skb, features);
2536
2537         /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2538          * support inner IPv6 checksums and segmentation so  we need to
2539          * strip that feature if this is an IPv6 encapsulated frame.
2540          */
2541         if (skb->encapsulation &&
2542             (skb->ip_summed == CHECKSUM_PARTIAL)) {
2543                 struct mlx4_en_priv *priv = netdev_priv(dev);
2544
2545                 if (!priv->vxlan_port ||
2546                     (ip_hdr(skb)->version != 4) ||
2547                     (udp_hdr(skb)->dest != priv->vxlan_port))
2548                         features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2549         }
2550
2551         return features;
2552 }
2553 #endif
2554
2555 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2556 {
2557         struct mlx4_en_priv *priv = netdev_priv(dev);
2558         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index];
2559         struct mlx4_update_qp_params params;
2560         int err;
2561
2562         if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2563                 return -EOPNOTSUPP;
2564
2565         /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2566         if (maxrate >> 12) {
2567                 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2568                 params.rate_val  = maxrate / 1000;
2569         } else if (maxrate) {
2570                 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2571                 params.rate_val  = maxrate;
2572         } else { /* zero serves to revoke the QP rate-limitation */
2573                 params.rate_unit = 0;
2574                 params.rate_val  = 0;
2575         }
2576
2577         err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2578                              &params);
2579         return err;
2580 }
2581
2582 static const struct net_device_ops mlx4_netdev_ops = {
2583         .ndo_open               = mlx4_en_open,
2584         .ndo_stop               = mlx4_en_close,
2585         .ndo_start_xmit         = mlx4_en_xmit,
2586         .ndo_select_queue       = mlx4_en_select_queue,
2587         .ndo_get_stats64        = mlx4_en_get_stats64,
2588         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2589         .ndo_set_mac_address    = mlx4_en_set_mac,
2590         .ndo_validate_addr      = eth_validate_addr,
2591         .ndo_change_mtu         = mlx4_en_change_mtu,
2592         .ndo_do_ioctl           = mlx4_en_ioctl,
2593         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2594         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2595         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2596 #ifdef CONFIG_NET_POLL_CONTROLLER
2597         .ndo_poll_controller    = mlx4_en_netpoll,
2598 #endif
2599         .ndo_set_features       = mlx4_en_set_features,
2600         .ndo_fix_features       = mlx4_en_fix_features,
2601         .ndo_setup_tc           = __mlx4_en_setup_tc,
2602 #ifdef CONFIG_RFS_ACCEL
2603         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2604 #endif
2605         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2606 #ifdef CONFIG_MLX4_EN_VXLAN
2607         .ndo_add_vxlan_port     = mlx4_en_add_vxlan_port,
2608         .ndo_del_vxlan_port     = mlx4_en_del_vxlan_port,
2609         .ndo_features_check     = mlx4_en_features_check,
2610 #endif
2611         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2612 };
2613
2614 static const struct net_device_ops mlx4_netdev_ops_master = {
2615         .ndo_open               = mlx4_en_open,
2616         .ndo_stop               = mlx4_en_close,
2617         .ndo_start_xmit         = mlx4_en_xmit,
2618         .ndo_select_queue       = mlx4_en_select_queue,
2619         .ndo_get_stats64        = mlx4_en_get_stats64,
2620         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2621         .ndo_set_mac_address    = mlx4_en_set_mac,
2622         .ndo_validate_addr      = eth_validate_addr,
2623         .ndo_change_mtu         = mlx4_en_change_mtu,
2624         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2625         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2626         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2627         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2628         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2629         .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2630         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2631         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2632         .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2633         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2634 #ifdef CONFIG_NET_POLL_CONTROLLER
2635         .ndo_poll_controller    = mlx4_en_netpoll,
2636 #endif
2637         .ndo_set_features       = mlx4_en_set_features,
2638         .ndo_fix_features       = mlx4_en_fix_features,
2639         .ndo_setup_tc           = __mlx4_en_setup_tc,
2640 #ifdef CONFIG_RFS_ACCEL
2641         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2642 #endif
2643         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2644 #ifdef CONFIG_MLX4_EN_VXLAN
2645         .ndo_add_vxlan_port     = mlx4_en_add_vxlan_port,
2646         .ndo_del_vxlan_port     = mlx4_en_del_vxlan_port,
2647         .ndo_features_check     = mlx4_en_features_check,
2648 #endif
2649         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2650 };
2651
2652 struct mlx4_en_bond {
2653         struct work_struct work;
2654         struct mlx4_en_priv *priv;
2655         int is_bonded;
2656         struct mlx4_port_map port_map;
2657 };
2658
2659 static void mlx4_en_bond_work(struct work_struct *work)
2660 {
2661         struct mlx4_en_bond *bond = container_of(work,
2662                                                      struct mlx4_en_bond,
2663                                                      work);
2664         int err = 0;
2665         struct mlx4_dev *dev = bond->priv->mdev->dev;
2666
2667         if (bond->is_bonded) {
2668                 if (!mlx4_is_bonded(dev)) {
2669                         err = mlx4_bond(dev);
2670                         if (err)
2671                                 en_err(bond->priv, "Fail to bond device\n");
2672                 }
2673                 if (!err) {
2674                         err = mlx4_port_map_set(dev, &bond->port_map);
2675                         if (err)
2676                                 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2677                                        bond->port_map.port1,
2678                                        bond->port_map.port2,
2679                                        err);
2680                 }
2681         } else if (mlx4_is_bonded(dev)) {
2682                 err = mlx4_unbond(dev);
2683                 if (err)
2684                         en_err(bond->priv, "Fail to unbond device\n");
2685         }
2686         dev_put(bond->priv->dev);
2687         kfree(bond);
2688 }
2689
2690 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
2691                                    u8 v2p_p1, u8 v2p_p2)
2692 {
2693         struct mlx4_en_bond *bond = NULL;
2694
2695         bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
2696         if (!bond)
2697                 return -ENOMEM;
2698
2699         INIT_WORK(&bond->work, mlx4_en_bond_work);
2700         bond->priv = priv;
2701         bond->is_bonded = is_bonded;
2702         bond->port_map.port1 = v2p_p1;
2703         bond->port_map.port2 = v2p_p2;
2704         dev_hold(priv->dev);
2705         queue_work(priv->mdev->workqueue, &bond->work);
2706         return 0;
2707 }
2708
2709 int mlx4_en_netdev_event(struct notifier_block *this,
2710                          unsigned long event, void *ptr)
2711 {
2712         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2713         u8 port = 0;
2714         struct mlx4_en_dev *mdev;
2715         struct mlx4_dev *dev;
2716         int i, num_eth_ports = 0;
2717         bool do_bond = true;
2718         struct mlx4_en_priv *priv;
2719         u8 v2p_port1 = 0;
2720         u8 v2p_port2 = 0;
2721
2722         if (!net_eq(dev_net(ndev), &init_net))
2723                 return NOTIFY_DONE;
2724
2725         mdev = container_of(this, struct mlx4_en_dev, nb);
2726         dev = mdev->dev;
2727
2728         /* Go into this mode only when two network devices set on two ports
2729          * of the same mlx4 device are slaves of the same bonding master
2730          */
2731         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2732                 ++num_eth_ports;
2733                 if (!port && (mdev->pndev[i] == ndev))
2734                         port = i;
2735                 mdev->upper[i] = mdev->pndev[i] ?
2736                         netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2737                 /* condition not met: network device is a slave */
2738                 if (!mdev->upper[i])
2739                         do_bond = false;
2740                 if (num_eth_ports < 2)
2741                         continue;
2742                 /* condition not met: same master */
2743                 if (mdev->upper[i] != mdev->upper[i-1])
2744                         do_bond = false;
2745         }
2746         /* condition not met: 2 salves */
2747         do_bond = (num_eth_ports ==  2) ? do_bond : false;
2748
2749         /* handle only events that come with enough info */
2750         if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2751                 return NOTIFY_DONE;
2752
2753         priv = netdev_priv(ndev);
2754         if (do_bond) {
2755                 struct netdev_notifier_bonding_info *notifier_info = ptr;
2756                 struct netdev_bonding_info *bonding_info =
2757                         &notifier_info->bonding_info;
2758
2759                 /* required mode 1, 2 or 4 */
2760                 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2761                     (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2762                     (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2763                         do_bond = false;
2764
2765                 /* require exactly 2 slaves */
2766                 if (bonding_info->master.num_slaves != 2)
2767                         do_bond = false;
2768
2769                 /* calc v2p */
2770                 if (do_bond) {
2771                         if (bonding_info->master.bond_mode ==
2772                             BOND_MODE_ACTIVEBACKUP) {
2773                                 /* in active-backup mode virtual ports are
2774                                  * mapped to the physical port of the active
2775                                  * slave */
2776                                 if (bonding_info->slave.state ==
2777                                     BOND_STATE_BACKUP) {
2778                                         if (port == 1) {
2779                                                 v2p_port1 = 2;
2780                                                 v2p_port2 = 2;
2781                                         } else {
2782                                                 v2p_port1 = 1;
2783                                                 v2p_port2 = 1;
2784                                         }
2785                                 } else { /* BOND_STATE_ACTIVE */
2786                                         if (port == 1) {
2787                                                 v2p_port1 = 1;
2788                                                 v2p_port2 = 1;
2789                                         } else {
2790                                                 v2p_port1 = 2;
2791                                                 v2p_port2 = 2;
2792                                         }
2793                                 }
2794                         } else { /* Active-Active */
2795                                 /* in active-active mode a virtual port is
2796                                  * mapped to the native physical port if and only
2797                                  * if the physical port is up */
2798                                 __s8 link = bonding_info->slave.link;
2799
2800                                 if (port == 1)
2801                                         v2p_port2 = 2;
2802                                 else
2803                                         v2p_port1 = 1;
2804                                 if ((link == BOND_LINK_UP) ||
2805                                     (link == BOND_LINK_FAIL)) {
2806                                         if (port == 1)
2807                                                 v2p_port1 = 1;
2808                                         else
2809                                                 v2p_port2 = 2;
2810                                 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
2811                                         if (port == 1)
2812                                                 v2p_port1 = 2;
2813                                         else
2814                                                 v2p_port2 = 1;
2815                                 }
2816                         }
2817                 }
2818         }
2819
2820         mlx4_en_queue_bond_work(priv, do_bond,
2821                                 v2p_port1, v2p_port2);
2822
2823         return NOTIFY_DONE;
2824 }
2825
2826 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
2827                                      struct mlx4_en_stats_bitmap *stats_bitmap,
2828                                      u8 rx_ppp, u8 rx_pause,
2829                                      u8 tx_ppp, u8 tx_pause)
2830 {
2831         int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
2832
2833         if (!mlx4_is_slave(dev) &&
2834             (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
2835                 mutex_lock(&stats_bitmap->mutex);
2836                 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
2837
2838                 if (rx_ppp)
2839                         bitmap_set(stats_bitmap->bitmap, last_i,
2840                                    NUM_FLOW_PRIORITY_STATS_RX);
2841                 last_i += NUM_FLOW_PRIORITY_STATS_RX;
2842
2843                 if (rx_pause && !(rx_ppp))
2844                         bitmap_set(stats_bitmap->bitmap, last_i,
2845                                    NUM_FLOW_STATS_RX);
2846                 last_i += NUM_FLOW_STATS_RX;
2847
2848                 if (tx_ppp)
2849                         bitmap_set(stats_bitmap->bitmap, last_i,
2850                                    NUM_FLOW_PRIORITY_STATS_TX);
2851                 last_i += NUM_FLOW_PRIORITY_STATS_TX;
2852
2853                 if (tx_pause && !(tx_ppp))
2854                         bitmap_set(stats_bitmap->bitmap, last_i,
2855                                    NUM_FLOW_STATS_TX);
2856                 last_i += NUM_FLOW_STATS_TX;
2857
2858                 mutex_unlock(&stats_bitmap->mutex);
2859         }
2860 }
2861
2862 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
2863                               struct mlx4_en_stats_bitmap *stats_bitmap,
2864                               u8 rx_ppp, u8 rx_pause,
2865                               u8 tx_ppp, u8 tx_pause)
2866 {
2867         int last_i = 0;
2868
2869         mutex_init(&stats_bitmap->mutex);
2870         bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
2871
2872         if (mlx4_is_slave(dev)) {
2873                 bitmap_set(stats_bitmap->bitmap, last_i +
2874                                          MLX4_FIND_NETDEV_STAT(rx_packets), 1);
2875                 bitmap_set(stats_bitmap->bitmap, last_i +
2876                                          MLX4_FIND_NETDEV_STAT(tx_packets), 1);
2877                 bitmap_set(stats_bitmap->bitmap, last_i +
2878                                          MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
2879                 bitmap_set(stats_bitmap->bitmap, last_i +
2880                                          MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
2881                 bitmap_set(stats_bitmap->bitmap, last_i +
2882                                          MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
2883                 bitmap_set(stats_bitmap->bitmap, last_i +
2884                                          MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
2885         } else {
2886                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
2887         }
2888         last_i += NUM_MAIN_STATS;
2889
2890         bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
2891         last_i += NUM_PORT_STATS;
2892
2893         if (mlx4_is_master(dev))
2894                 bitmap_set(stats_bitmap->bitmap, last_i,
2895                            NUM_PF_STATS);
2896         last_i += NUM_PF_STATS;
2897
2898         mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
2899                                         rx_ppp, rx_pause,
2900                                         tx_ppp, tx_pause);
2901         last_i += NUM_FLOW_STATS;
2902
2903         if (!mlx4_is_slave(dev))
2904                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
2905 }
2906
2907 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2908                         struct mlx4_en_port_profile *prof)
2909 {
2910         struct net_device *dev;
2911         struct mlx4_en_priv *priv;
2912         int i;
2913         int err;
2914
2915         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2916                                  MAX_TX_RINGS, MAX_RX_RINGS);
2917         if (dev == NULL)
2918                 return -ENOMEM;
2919
2920         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2921         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2922
2923         SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
2924         dev->dev_port = port - 1;
2925
2926         /*
2927          * Initialize driver private data
2928          */
2929
2930         priv = netdev_priv(dev);
2931         memset(priv, 0, sizeof(struct mlx4_en_priv));
2932         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
2933         spin_lock_init(&priv->stats_lock);
2934         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2935         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2936         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2937         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2938         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2939 #ifdef CONFIG_MLX4_EN_VXLAN
2940         INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
2941         INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
2942 #endif
2943 #ifdef CONFIG_RFS_ACCEL
2944         INIT_LIST_HEAD(&priv->filters);
2945         spin_lock_init(&priv->filters_lock);
2946 #endif
2947
2948         priv->dev = dev;
2949         priv->mdev = mdev;
2950         priv->ddev = &mdev->pdev->dev;
2951         priv->prof = prof;
2952         priv->port = port;
2953         priv->port_up = false;
2954         priv->flags = prof->flags;
2955         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
2956         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2957                         MLX4_WQE_CTRL_SOLICITED);
2958         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2959         priv->tx_ring_num = prof->tx_ring_num;
2960         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
2961         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
2962
2963         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2964                                 GFP_KERNEL);
2965         if (!priv->tx_ring) {
2966                 err = -ENOMEM;
2967                 goto out;
2968         }
2969         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2970                               GFP_KERNEL);
2971         if (!priv->tx_cq) {
2972                 err = -ENOMEM;
2973                 goto out;
2974         }
2975         priv->rx_ring_num = prof->rx_ring_num;
2976         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2977         priv->cqe_size = mdev->dev->caps.cqe_size;
2978         priv->mac_index = -1;
2979         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2980 #ifdef CONFIG_MLX4_EN_DCB
2981         if (!mlx4_is_slave(priv->mdev->dev)) {
2982                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2983                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2984                 } else {
2985                         en_info(priv, "enabling only PFC DCB ops\n");
2986                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2987                 }
2988         }
2989 #endif
2990
2991         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2992                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2993
2994         /* Query for default mac and max mtu */
2995         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2996
2997         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
2998             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
2999                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3000
3001         /* Set default MAC */
3002         dev->addr_len = ETH_ALEN;
3003         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
3004         if (!is_valid_ether_addr(dev->dev_addr)) {
3005                 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
3006                        priv->port, dev->dev_addr);
3007                 err = -EINVAL;
3008                 goto out;
3009         } else if (mlx4_is_slave(priv->mdev->dev) &&
3010                    (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3011                 /* Random MAC was assigned in mlx4_slave_cap
3012                  * in mlx4_core module
3013                  */
3014                 dev->addr_assign_type |= NET_ADDR_RANDOM;
3015                 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3016         }
3017
3018         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3019
3020         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3021                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3022         err = mlx4_en_alloc_resources(priv);
3023         if (err)
3024                 goto out;
3025
3026         /* Initialize time stamping config */
3027         priv->hwtstamp_config.flags = 0;
3028         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3029         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3030
3031         /* Allocate page for receive rings */
3032         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
3033                                 MLX4_EN_PAGE_SIZE);
3034         if (err) {
3035                 en_err(priv, "Failed to allocate page for rx qps\n");
3036                 goto out;
3037         }
3038         priv->allocated = 1;
3039
3040         /*
3041          * Initialize netdev entry points
3042          */
3043         if (mlx4_is_master(priv->mdev->dev))
3044                 dev->netdev_ops = &mlx4_netdev_ops_master;
3045         else
3046                 dev->netdev_ops = &mlx4_netdev_ops;
3047         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3048         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
3049         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
3050
3051         dev->ethtool_ops = &mlx4_en_ethtool_ops;
3052
3053         /*
3054          * Set driver features
3055          */
3056         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3057         if (mdev->LSO_support)
3058                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3059
3060         dev->vlan_features = dev->hw_features;
3061
3062         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3063         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3064                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3065                         NETIF_F_HW_VLAN_CTAG_FILTER;
3066         dev->hw_features |= NETIF_F_LOOPBACK |
3067                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3068
3069         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3070                 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3071                         NETIF_F_HW_VLAN_STAG_FILTER;
3072                 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3073         }
3074
3075         if (mlx4_is_slave(mdev->dev)) {
3076                 int phv;
3077
3078                 err = get_phv_bit(mdev->dev, port, &phv);
3079                 if (!err && phv) {
3080                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3081                         priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3082                 }
3083         } else {
3084                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3085                     !(mdev->dev->caps.flags2 &
3086                       MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3087                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3088         }
3089
3090         if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3091                 dev->hw_features |= NETIF_F_RXFCS;
3092
3093         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3094                 dev->hw_features |= NETIF_F_RXALL;
3095
3096         if (mdev->dev->caps.steering_mode ==
3097             MLX4_STEERING_MODE_DEVICE_MANAGED &&
3098             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3099                 dev->hw_features |= NETIF_F_NTUPLE;
3100
3101         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3102                 dev->priv_flags |= IFF_UNICAST_FLT;
3103
3104         /* Setting a default hash function value */
3105         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3106                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3107         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3108                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3109         } else {
3110                 en_warn(priv,
3111                         "No RSS hash capabilities exposed, using Toeplitz\n");
3112                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3113         }
3114
3115         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3116                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3117                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3118                                     NETIF_F_GSO_PARTIAL;
3119                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL |
3120                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3121                                     NETIF_F_GSO_PARTIAL;
3122                 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3123         }
3124
3125         mdev->pndev[port] = dev;
3126         mdev->upper[port] = NULL;
3127
3128         netif_carrier_off(dev);
3129         mlx4_en_set_default_moderation(priv);
3130
3131         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
3132         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3133
3134         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3135
3136         /* Configure port */
3137         mlx4_en_calc_rx_buf(dev);
3138         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3139                                     priv->rx_skb_size + ETH_FCS_LEN,
3140                                     prof->tx_pause, prof->tx_ppp,
3141                                     prof->rx_pause, prof->rx_ppp);
3142         if (err) {
3143                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3144                        priv->port, err);
3145                 goto out;
3146         }
3147
3148         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3149                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3150                 if (err) {
3151                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3152                                err);
3153                         goto out;
3154                 }
3155         }
3156
3157         /* Init port */
3158         en_warn(priv, "Initializing port\n");
3159         err = mlx4_INIT_PORT(mdev->dev, priv->port);
3160         if (err) {
3161                 en_err(priv, "Failed Initializing port\n");
3162                 goto out;
3163         }
3164         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3165
3166         /* Initialize time stamp mechanism */
3167         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3168                 mlx4_en_init_timestamp(mdev);
3169
3170         queue_delayed_work(mdev->workqueue, &priv->service_task,
3171                            SERVICE_TASK_DELAY);
3172
3173         mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3174                                  mdev->profile.prof[priv->port].rx_ppp,
3175                                  mdev->profile.prof[priv->port].rx_pause,
3176                                  mdev->profile.prof[priv->port].tx_ppp,
3177                                  mdev->profile.prof[priv->port].tx_pause);
3178
3179         err = register_netdev(dev);
3180         if (err) {
3181                 en_err(priv, "Netdev registration failed for port %d\n", port);
3182                 goto out;
3183         }
3184
3185         priv->registered = 1;
3186         devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
3187                                   dev);
3188
3189         return 0;
3190
3191 out:
3192         mlx4_en_destroy_netdev(dev);
3193         return err;
3194 }
3195
3196 int mlx4_en_reset_config(struct net_device *dev,
3197                          struct hwtstamp_config ts_config,
3198                          netdev_features_t features)
3199 {
3200         struct mlx4_en_priv *priv = netdev_priv(dev);
3201         struct mlx4_en_dev *mdev = priv->mdev;
3202         struct mlx4_en_port_profile new_prof;
3203         struct mlx4_en_priv *tmp;
3204         int port_up = 0;
3205         int err = 0;
3206
3207         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3208             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3209             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3210             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3211                 return 0; /* Nothing to change */
3212
3213         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3214             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3215             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3216                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3217                 return -EINVAL;
3218         }
3219
3220         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
3221         if (!tmp)
3222                 return -ENOMEM;
3223
3224         mutex_lock(&mdev->state_lock);
3225
3226         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3227         memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config));
3228
3229         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof);
3230         if (err)
3231                 goto out;
3232
3233         if (priv->port_up) {
3234                 port_up = 1;
3235                 mlx4_en_stop_port(dev, 1);
3236         }
3237
3238         en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
3239                 ts_config.rx_filter,
3240                 !!(features & NETIF_F_HW_VLAN_CTAG_RX));
3241
3242         mlx4_en_safe_replace_resources(priv, tmp);
3243
3244         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3245                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3246                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3247                 else
3248                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3249         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3250                 /* RX time-stamping is OFF, update the RX vlan offload
3251                  * to the latest wanted state
3252                  */
3253                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3254                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3255                 else
3256                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3257         }
3258
3259         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3260                 if (features & NETIF_F_RXFCS)
3261                         dev->features |= NETIF_F_RXFCS;
3262                 else
3263                         dev->features &= ~NETIF_F_RXFCS;
3264         }
3265
3266         /* RX vlan offload and RX time-stamping can't co-exist !
3267          * Regardless of the caller's choice,
3268          * Turn Off RX vlan offload in case of time-stamping is ON
3269          */
3270         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3271                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3272                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3273                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3274         }
3275
3276         if (port_up) {
3277                 err = mlx4_en_start_port(dev);
3278                 if (err)
3279                         en_err(priv, "Failed starting port\n");
3280         }
3281
3282 out:
3283         mutex_unlock(&mdev->state_lock);
3284         kfree(tmp);
3285         if (!err)
3286                 netdev_features_change(dev);
3287         return err;
3288 }