sys/dev/mlx4/mlx4_en/mlx4_en_netdev.c

   1 /*
   2  * Copyright (c) 2007, 2014 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/delay.h>
  36 #include <linux/slab.h>
  37 #include <linux/compat.h>
  38 #ifdef CONFIG_NET_RX_BUSY_POLL
  39 #include <net/busy_poll.h>
  40 #endif
  41
  42 #include <linux/list.h>
  43 #include <linux/if_ether.h>
  44
  45 #include <dev/mlx4/driver.h>
  46 #include <dev/mlx4/device.h>
  47 #include <dev/mlx4/cmd.h>
  48 #include <dev/mlx4/cq.h>
  49
  50 #include <sys/sockio.h>
  51 #include <sys/sysctl.h>
  52
  53 #include "en.h"
  54 #include "en_port.h"
  55
  56 NETDUMP_DEFINE(mlx4_en);
  57
  58 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv);
  59 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv);
  60
  61 #ifdef CONFIG_NET_RX_BUSY_POLL
  62 /* must be called with local_bh_disable()d */
  63 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
  64 {
  65         struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
  66         struct net_device *dev = cq->dev;
  67         struct mlx4_en_priv *priv = netdev_priv(dev);
  68         struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
  69         int done;
  70
  71         if (!priv->port_up)
  72                 return LL_FLUSH_FAILED;
  73
  74         if (!mlx4_en_cq_lock_poll(cq))
  75                 return LL_FLUSH_BUSY;
  76
  77         done = mlx4_en_process_rx_cq(dev, cq, 4);
  78 #ifdef LL_EXTENDED_STATS
  79         if (likely(done))
  80                 rx_ring->cleaned += done;
  81         else
  82                 rx_ring->misses++;
  83 #endif
  84
  85         mlx4_en_cq_unlock_poll(cq);
  86
  87         return done;
  88 }
  89 #endif  /* CONFIG_NET_RX_BUSY_POLL */
  90
  91 #ifdef CONFIG_RFS_ACCEL
  92
  93 struct mlx4_en_filter {
  94         struct list_head next;
  95         struct work_struct work;
  96
  97         u8     ip_proto;
  98         __be32 src_ip;
  99         __be32 dst_ip;
 100         __be16 src_port;
 101         __be16 dst_port;
 102
 103         int rxq_index;
 104         struct mlx4_en_priv *priv;
 105         u32 flow_id;                    /* RFS infrastructure id */
 106         int id;                         /* mlx4_en driver id */
 107         u64 reg_id;                     /* Flow steering API id */
 108         u8 activated;                   /* Used to prevent expiry before filter
 109                                          * is attached
 110                                          */
 111         struct hlist_node filter_chain;
 112 };
 113
 114 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 115
 116 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 117 {
 118         switch (ip_proto) {
 119         case IPPROTO_UDP:
 120                 return MLX4_NET_TRANS_RULE_ID_UDP;
 121         case IPPROTO_TCP:
 122                 return MLX4_NET_TRANS_RULE_ID_TCP;
 123         default:
 124                 return MLX4_NET_TRANS_RULE_NUM;
 125         }
 126 };
 127
 128 static void mlx4_en_filter_work(struct work_struct *work)
 129 {
 130         struct mlx4_en_filter *filter = container_of(work,
 131                                                      struct mlx4_en_filter,
 132                                                      work);
 133         struct mlx4_en_priv *priv = filter->priv;
 134         struct mlx4_spec_list spec_tcp_udp = {
 135                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 136                 {
 137                         .tcp_udp = {
 138                                 .dst_port = filter->dst_port,
 139                                 .dst_port_msk = (__force __be16)-1,
 140                                 .src_port = filter->src_port,
 141                                 .src_port_msk = (__force __be16)-1,
 142                         },
 143                 },
 144         };
 145         struct mlx4_spec_list spec_ip = {
 146                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 147                 {
 148                         .ipv4 = {
 149                                 .dst_ip = filter->dst_ip,
 150                                 .dst_ip_msk = (__force __be32)-1,
 151                                 .src_ip = filter->src_ip,
 152                                 .src_ip_msk = (__force __be32)-1,
 153                         },
 154                 },
 155         };
 156         struct mlx4_spec_list spec_eth = {
 157                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 158         };
 159         struct mlx4_net_trans_rule rule = {
 160                 .list = LIST_HEAD_INIT(rule.list),
 161                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 162                 .exclusive = 1,
 163                 .allow_loopback = 1,
 164                 .promisc_mode = MLX4_FS_REGULAR,
 165                 .port = priv->port,
 166                 .priority = MLX4_DOMAIN_RFS,
 167         };
 168         int rc;
 169         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 170
 171         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 172                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 173                         filter->ip_proto);
 174                 goto ignore;
 175         }
 176         list_add_tail(&spec_eth.list, &rule.list);
 177         list_add_tail(&spec_ip.list, &rule.list);
 178         list_add_tail(&spec_tcp_udp.list, &rule.list);
 179
 180         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 181         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 182         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 183
 184         filter->activated = 0;
 185
 186         if (filter->reg_id) {
 187                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 188                 if (rc && rc != -ENOENT)
 189                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 190         }
 191
 192         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 193         if (rc)
 194                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 195
 196 ignore:
 197         mlx4_en_filter_rfs_expire(priv);
 198
 199         filter->activated = 1;
 200 }
 201
 202 static inline struct hlist_head *
 203 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 204                    __be16 src_port, __be16 dst_port)
 205 {
 206         unsigned long l;
 207         int bucket_idx;
 208
 209         l = (__force unsigned long)src_port |
 210             ((__force unsigned long)dst_port << 2);
 211         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 212
 213         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 214
 215         return &priv->filter_hash[bucket_idx];
 216 }
 217
 218 static struct mlx4_en_filter *
 219 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 220                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 221                      __be16 dst_port, u32 flow_id)
 222 {
 223         struct mlx4_en_filter *filter = NULL;
 224
 225         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 226         if (!filter)
 227                 return NULL;
 228
 229         filter->priv = priv;
 230         filter->rxq_index = rxq_index;
 231         INIT_WORK(&filter->work, mlx4_en_filter_work);
 232
 233         filter->src_ip = src_ip;
 234         filter->dst_ip = dst_ip;
 235         filter->ip_proto = ip_proto;
 236         filter->src_port = src_port;
 237         filter->dst_port = dst_port;
 238
 239         filter->flow_id = flow_id;
 240
 241         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 242
 243         list_add_tail(&filter->next, &priv->filters);
 244         hlist_add_head(&filter->filter_chain,
 245                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 246                                           dst_port));
 247
 248         return filter;
 249 }
 250
 251 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 252 {
 253         struct mlx4_en_priv *priv = filter->priv;
 254         int rc;
 255
 256         list_del(&filter->next);
 257
 258         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 259         if (rc && rc != -ENOENT)
 260                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 261
 262         kfree(filter);
 263 }
 264
 265 static inline struct mlx4_en_filter *
 266 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 267                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 268 {
 269         struct mlx4_en_filter *filter;
 270         struct mlx4_en_filter *ret = NULL;
 271
 272         hlist_for_each_entry(filter,
 273                              filter_hash_bucket(priv, src_ip, dst_ip,
 274                                                 src_port, dst_port),
 275                              filter_chain) {
 276                 if (filter->src_ip == src_ip &&
 277                     filter->dst_ip == dst_ip &&
 278                     filter->ip_proto == ip_proto &&
 279                     filter->src_port == src_port &&
 280                     filter->dst_port == dst_port) {
 281                         ret = filter;
 282                         break;
 283                 }
 284         }
 285
 286         return ret;
 287 }
 288
 289 static int
 290 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 291                    u16 rxq_index, u32 flow_id)
 292 {
 293         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 294         struct mlx4_en_filter *filter;
 295         const struct iphdr *ip;
 296         const __be16 *ports;
 297         u8 ip_proto;
 298         __be32 src_ip;
 299         __be32 dst_ip;
 300         __be16 src_port;
 301         __be16 dst_port;
 302         int nhoff = skb_network_offset(skb);
 303         int ret = 0;
 304
 305         if (skb->protocol != htons(ETH_P_IP))
 306                 return -EPROTONOSUPPORT;
 307
 308         ip = (const struct iphdr *)(skb->data + nhoff);
 309         if (ip_is_fragment(ip))
 310                 return -EPROTONOSUPPORT;
 311
 312         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 313                 return -EPROTONOSUPPORT;
 314         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 315
 316         ip_proto = ip->protocol;
 317         src_ip = ip->saddr;
 318         dst_ip = ip->daddr;
 319         src_port = ports[0];
 320         dst_port = ports[1];
 321
 322         spin_lock_bh(&priv->filters_lock);
 323         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 324                                      src_port, dst_port);
 325         if (filter) {
 326                 if (filter->rxq_index == rxq_index)
 327                         goto out;
 328
 329                 filter->rxq_index = rxq_index;
 330         } else {
 331                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 332                                               src_ip, dst_ip, ip_proto,
 333                                               src_port, dst_port, flow_id);
 334                 if (!filter) {
 335                         ret = -ENOMEM;
 336                         goto err;
 337                 }
 338         }
 339
 340         queue_work(priv->mdev->workqueue, &filter->work);
 341
 342 out:
 343         ret = filter->id;
 344 err:
 345         spin_unlock_bh(&priv->filters_lock);
 346
 347         return ret;
 348 }
 349
 350 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 351 {
 352         struct mlx4_en_filter *filter, *tmp;
 353         LIST_HEAD(del_list);
 354
 355         spin_lock_bh(&priv->filters_lock);
 356         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 357                 list_move(&filter->next, &del_list);
 358                 hlist_del(&filter->filter_chain);
 359         }
 360         spin_unlock_bh(&priv->filters_lock);
 361
 362         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 363                 cancel_work_sync(&filter->work);
 364                 mlx4_en_filter_free(filter);
 365         }
 366 }
 367
 368 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 369 {
 370         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 371         LIST_HEAD(del_list);
 372         int i = 0;
 373
 374         spin_lock_bh(&priv->filters_lock);
 375         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 376                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 377                         break;
 378
 379                 if (filter->activated &&
 380                     !work_pending(&filter->work) &&
 381                     rps_may_expire_flow(priv->dev,
 382                                         filter->rxq_index, filter->flow_id,
 383                                         filter->id)) {
 384                         list_move(&filter->next, &del_list);
 385                         hlist_del(&filter->filter_chain);
 386                 } else
 387                         last_filter = filter;
 388
 389                 i++;
 390         }
 391
 392         if (last_filter && (&last_filter->next != priv->filters.next))
 393                 list_move(&priv->filters, &last_filter->next);
 394
 395         spin_unlock_bh(&priv->filters_lock);
 396
 397         list_for_each_entry_safe(filter, tmp, &del_list, next)
 398                 mlx4_en_filter_free(filter);
 399 }
 400 #endif
 401
 402 static void mlx4_en_vlan_rx_add_vid(void *arg, struct net_device *dev, u16 vid)
 403 {
 404         struct mlx4_en_priv *priv = netdev_priv(dev);
 405         struct mlx4_en_dev *mdev = priv->mdev;
 406         int err;
 407         int idx;
 408
 409         if (arg != priv)
 410                 return;
 411
 412         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 413
 414         set_bit(vid, priv->active_vlans);
 415
 416         /* Add VID to port VLAN filter */
 417         mutex_lock(&mdev->state_lock);
 418         if (mdev->device_up && priv->port_up) {
 419                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 420                 if (err)
 421                         en_err(priv, "Failed configuring VLAN filter\n");
 422         }
 423         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 424                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 425         mutex_unlock(&mdev->state_lock);
 426
 427 }
 428
 429 static void mlx4_en_vlan_rx_kill_vid(void *arg, struct net_device *dev, u16 vid)
 430 {
 431         struct mlx4_en_priv *priv = netdev_priv(dev);
 432         struct mlx4_en_dev *mdev = priv->mdev;
 433         int err;
 434
 435         if (arg != priv)
 436                 return;
 437
 438         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 439
 440         clear_bit(vid, priv->active_vlans);
 441
 442         /* Remove VID from port VLAN filter */
 443         mutex_lock(&mdev->state_lock);
 444         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 445
 446         if (mdev->device_up && priv->port_up) {
 447                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 448                 if (err)
 449                         en_err(priv, "Failed configuring VLAN filter\n");
 450         }
 451         mutex_unlock(&mdev->state_lock);
 452
 453 }
 454
 455 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 456                                     int qpn, u64 *reg_id)
 457 {
 458         int err;
 459
 460         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 461             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 462                 return 0; /* do nothing */
 463
 464         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 465                                     MLX4_DOMAIN_NIC, reg_id);
 466         if (err) {
 467                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 468                 return err;
 469         }
 470         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, (long long)*reg_id);
 471         return 0;
 472 }
 473
 474 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 475                                 unsigned char *mac, int *qpn, u64 *reg_id)
 476 {
 477         struct mlx4_en_dev *mdev = priv->mdev;
 478         struct mlx4_dev *dev = mdev->dev;
 479         int err;
 480
 481         switch (dev->caps.steering_mode) {
 482         case MLX4_STEERING_MODE_B0: {
 483                 struct mlx4_qp qp;
 484                 u8 gid[16] = {0};
 485
 486                 qp.qpn = *qpn;
 487                 memcpy(&gid[10], mac, ETH_ALEN);
 488                 gid[5] = priv->port;
 489
 490                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 491                 break;
 492         }
 493         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 494                 struct mlx4_spec_list spec_eth = { {NULL} };
 495                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 496
 497                 struct mlx4_net_trans_rule rule = {
 498                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 499                         .exclusive = 0,
 500                         .allow_loopback = 1,
 501                         .promisc_mode = MLX4_FS_REGULAR,
 502                         .priority = MLX4_DOMAIN_NIC,
 503                 };
 504
 505                 rule.port = priv->port;
 506                 rule.qpn = *qpn;
 507                 INIT_LIST_HEAD(&rule.list);
 508
 509                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 510                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 511                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 512                 list_add_tail(&spec_eth.list, &rule.list);
 513
 514                 err = mlx4_flow_attach(dev, &rule, reg_id);
 515                 break;
 516         }
 517         default:
 518                 return -EINVAL;
 519         }
 520         if (err)
 521                 en_warn(priv, "Failed Attaching Unicast\n");
 522
 523         return err;
 524 }
 525
 526 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 527                                      unsigned char *mac, int qpn, u64 reg_id)
 528 {
 529         struct mlx4_en_dev *mdev = priv->mdev;
 530         struct mlx4_dev *dev = mdev->dev;
 531
 532         switch (dev->caps.steering_mode) {
 533         case MLX4_STEERING_MODE_B0: {
 534                 struct mlx4_qp qp;
 535                 u8 gid[16] = {0};
 536
 537                 qp.qpn = qpn;
 538                 memcpy(&gid[10], mac, ETH_ALEN);
 539                 gid[5] = priv->port;
 540
 541                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 542                 break;
 543         }
 544         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 545                 mlx4_flow_detach(dev, reg_id);
 546                 break;
 547         }
 548         default:
 549                 en_err(priv, "Invalid steering mode.\n");
 550         }
 551 }
 552
 553 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 554 {
 555         struct mlx4_en_dev *mdev = priv->mdev;
 556         struct mlx4_dev *dev = mdev->dev;
 557         int index = 0;
 558         int err = 0;
 559         int *qpn = &priv->base_qpn;
 560         u64 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 561
 562         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 563                IF_LLADDR(priv->dev));
 564         index = mlx4_register_mac(dev, priv->port, mac);
 565         if (index < 0) {
 566                 err = index;
 567                 en_err(priv, "Failed adding MAC: %pM\n",
 568                        IF_LLADDR(priv->dev));
 569                 return err;
 570         }
 571
 572         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 573                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 574                 *qpn = base_qpn + index;
 575                 return 0;
 576         }
 577
 578         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
 579         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 580         if (err) {
 581                 en_err(priv, "Failed to reserve qp for mac registration\n");
 582                 mlx4_unregister_mac(dev, priv->port, mac);
 583                 return err;
 584         }
 585
 586         return 0;
 587 }
 588
 589 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 590 {
 591         struct mlx4_en_dev *mdev = priv->mdev;
 592         struct mlx4_dev *dev = mdev->dev;
 593         int qpn = priv->base_qpn;
 594
 595         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 596                 u64 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 597                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 598                        IF_LLADDR(priv->dev));
 599                 mlx4_unregister_mac(dev, priv->port, mac);
 600         } else {
 601                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 602                        priv->port, qpn);
 603                 mlx4_qp_release_range(dev, qpn, 1);
 604                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 605         }
 606 }
 607
 608 static void mlx4_en_clear_uclist(struct net_device *dev)
 609 {
 610         struct mlx4_en_priv *priv = netdev_priv(dev);
 611         struct mlx4_en_addr_list *tmp, *uc_to_del;
 612
 613         list_for_each_entry_safe(uc_to_del, tmp, &priv->uc_list, list) {
 614                 list_del(&uc_to_del->list);
 615                 kfree(uc_to_del);
 616         }
 617 }
 618
 619 static void mlx4_en_cache_uclist(struct net_device *dev)
 620 {
 621         struct mlx4_en_priv *priv = netdev_priv(dev);
 622         struct mlx4_en_addr_list *tmp;
 623         struct ifaddr *ifa;
 624
 625         mlx4_en_clear_uclist(dev);
 626
 627         if_addr_rlock(dev);
 628         CK_STAILQ_FOREACH(ifa, &dev->if_addrhead, ifa_link) {
 629                 if (ifa->ifa_addr->sa_family != AF_LINK)
 630                         continue;
 631                 if (((struct sockaddr_dl *)ifa->ifa_addr)->sdl_alen !=
 632                                 ETHER_ADDR_LEN)
 633                         continue;
 634                 tmp = kzalloc(sizeof(struct mlx4_en_addr_list), GFP_ATOMIC);
 635                 if (tmp == NULL) {
 636                         en_err(priv, "Failed to allocate address list\n");
 637                         break;
 638                 }
 639                 memcpy(tmp->addr,
 640                         LLADDR((struct sockaddr_dl *)ifa->ifa_addr), ETH_ALEN);
 641                 list_add_tail(&tmp->list, &priv->uc_list);
 642         }
 643         if_addr_runlock(dev);
 644 }
 645
 646 static void mlx4_en_clear_mclist(struct net_device *dev)
 647 {
 648         struct mlx4_en_priv *priv = netdev_priv(dev);
 649         struct mlx4_en_addr_list *tmp, *mc_to_del;
 650
 651         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 652                 list_del(&mc_to_del->list);
 653                 kfree(mc_to_del);
 654         }
 655 }
 656
 657 static void mlx4_en_cache_mclist(struct net_device *dev)
 658 {
 659         struct mlx4_en_priv *priv = netdev_priv(dev);
 660         struct mlx4_en_addr_list *tmp;
 661         struct ifmultiaddr *ifma;
 662
 663         mlx4_en_clear_mclist(dev);
 664
 665         if_maddr_rlock(dev);
 666         CK_STAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
 667                 if (ifma->ifma_addr->sa_family != AF_LINK)
 668                         continue;
 669                 if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
 670                                 ETHER_ADDR_LEN)
 671                         continue;
 672                 tmp = kzalloc(sizeof(struct mlx4_en_addr_list), GFP_ATOMIC);
 673                 if (tmp == NULL) {
 674                         en_err(priv, "Failed to allocate address list\n");
 675                         break;
 676                 }
 677                 memcpy(tmp->addr,
 678                         LLADDR((struct sockaddr_dl *)ifma->ifma_addr), ETH_ALEN);
 679                 list_add_tail(&tmp->list, &priv->mc_list);
 680         }
 681         if_maddr_runlock(dev);
 682 }
 683
 684 static void update_addr_list_flags(struct mlx4_en_priv *priv,
 685                                 struct list_head *dst,
 686                                 struct list_head *src)
 687 {
 688         struct mlx4_en_addr_list *dst_tmp, *src_tmp, *new_mc;
 689         bool found;
 690
 691         /* Find all the entries that should be removed from dst,
 692          * These are the entries that are not found in src
 693          */
 694         list_for_each_entry(dst_tmp, dst, list) {
 695                 found = false;
 696                 list_for_each_entry(src_tmp, src, list) {
 697                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 698                                 found = true;
 699                                 break;
 700                         }
 701                 }
 702                 if (!found)
 703                         dst_tmp->action = MLX4_ADDR_LIST_REM;
 704         }
 705
 706         /* Add entries that exist in src but not in dst
 707          * mark them as need to add
 708          */
 709         list_for_each_entry(src_tmp, src, list) {
 710                 found = false;
 711                 list_for_each_entry(dst_tmp, dst, list) {
 712                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 713                                 dst_tmp->action = MLX4_ADDR_LIST_NONE;
 714                                 found = true;
 715                                 break;
 716                         }
 717                 }
 718                 if (!found) {
 719                         new_mc = kmalloc(sizeof(struct mlx4_en_addr_list),
 720                                          GFP_KERNEL);
 721                         if (!new_mc) {
 722                                 en_err(priv, "Failed to allocate current multicast list\n");
 723                                 return;
 724                         }
 725                         memcpy(new_mc, src_tmp,
 726                                sizeof(struct mlx4_en_addr_list));
 727                         new_mc->action = MLX4_ADDR_LIST_ADD;
 728                         list_add_tail(&new_mc->list, dst);
 729                 }
 730         }
 731 }
 732
 733 static void mlx4_en_set_rx_mode(struct net_device *dev)
 734 {
 735         struct mlx4_en_priv *priv = netdev_priv(dev);
 736
 737         if (!priv->port_up)
 738                 return;
 739
 740         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 741 }
 742
 743 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 744                                      struct mlx4_en_dev *mdev)
 745 {
 746         int err = 0;
 747
 748         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 749                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 750
 751                 /* Enable promiscouos mode */
 752                 switch (mdev->dev->caps.steering_mode) {
 753                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 754                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 755                                                           priv->port,
 756                                                           priv->base_qpn,
 757                                                           MLX4_FS_ALL_DEFAULT);
 758                         if (err)
 759                                 en_err(priv, "Failed enabling promiscuous mode\n");
 760                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 761                         break;
 762
 763                 case MLX4_STEERING_MODE_B0:
 764                         err = mlx4_unicast_promisc_add(mdev->dev,
 765                                                        priv->base_qpn,
 766                                                        priv->port);
 767                         if (err)
 768                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 769
 770                         /* Add the default qp number as multicast
 771                          * promisc
 772                          */
 773                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 774                                 err = mlx4_multicast_promisc_add(mdev->dev,
 775                                                                  priv->base_qpn,
 776                                                                  priv->port);
 777                                 if (err)
 778                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 779                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 780                         }
 781                         break;
 782
 783                 case MLX4_STEERING_MODE_A0:
 784                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 785                                                      priv->port,
 786                                                      priv->base_qpn,
 787                                                      1);
 788                         if (err)
 789                                 en_err(priv, "Failed enabling promiscuous mode\n");
 790                         break;
 791                 }
 792
 793                 /* Disable port multicast filter (unconditionally) */
 794                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 795                                           0, MLX4_MCAST_DISABLE);
 796                 if (err)
 797                         en_err(priv, "Failed disabling multicast filter\n");
 798         }
 799 }
 800
 801 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 802                                        struct mlx4_en_dev *mdev)
 803 {
 804         int err = 0;
 805
 806         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 807
 808         /* Disable promiscouos mode */
 809         switch (mdev->dev->caps.steering_mode) {
 810         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 811                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 812                                                      priv->port,
 813                                                      MLX4_FS_ALL_DEFAULT);
 814                 if (err)
 815                         en_err(priv, "Failed disabling promiscuous mode\n");
 816                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 817                 break;
 818
 819         case MLX4_STEERING_MODE_B0:
 820                 err = mlx4_unicast_promisc_remove(mdev->dev,
 821                                                   priv->base_qpn,
 822                                                   priv->port);
 823                 if (err)
 824                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 825                 /* Disable Multicast promisc */
 826                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 827                         err = mlx4_multicast_promisc_remove(mdev->dev,
 828                                                             priv->base_qpn,
 829                                                             priv->port);
 830                         if (err)
 831                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 832                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 833                 }
 834                 break;
 835
 836         case MLX4_STEERING_MODE_A0:
 837                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 838                                              priv->port,
 839                                              priv->base_qpn, 0);
 840                 if (err)
 841                         en_err(priv, "Failed disabling promiscuous mode\n");
 842                 break;
 843         }
 844 }
 845
 846 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 847                                  struct net_device *dev,
 848                                  struct mlx4_en_dev *mdev)
 849 {
 850         struct mlx4_en_addr_list *addr_list, *tmp;
 851         u8 mc_list[16] = {0};
 852         int err = 0;
 853         u64 mcast_addr = 0;
 854
 855
 856         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 857         if (dev->if_flags & IFF_ALLMULTI) {
 858                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 859                                           0, MLX4_MCAST_DISABLE);
 860                 if (err)
 861                         en_err(priv, "Failed disabling multicast filter\n");
 862
 863                 /* Add the default qp number as multicast promisc */
 864                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 865                         switch (mdev->dev->caps.steering_mode) {
 866                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 867                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 868                                                                   priv->port,
 869                                                                   priv->base_qpn,
 870                                                                   MLX4_FS_MC_DEFAULT);
 871                                 break;
 872
 873                         case MLX4_STEERING_MODE_B0:
 874                                 err = mlx4_multicast_promisc_add(mdev->dev,
 875                                                                  priv->base_qpn,
 876                                                                  priv->port);
 877                                 break;
 878
 879                         case MLX4_STEERING_MODE_A0:
 880                                 break;
 881                         }
 882                         if (err)
 883                                 en_err(priv, "Failed entering multicast promisc mode\n");
 884                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 885                 }
 886         } else {
 887                 /* Disable Multicast promisc */
 888                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 889                         switch (mdev->dev->caps.steering_mode) {
 890                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 891                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 892                                                                      priv->port,
 893                                                                      MLX4_FS_MC_DEFAULT);
 894                                 break;
 895
 896                         case MLX4_STEERING_MODE_B0:
 897                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 898                                                                     priv->base_qpn,
 899                                                                     priv->port);
 900                                 break;
 901
 902                         case MLX4_STEERING_MODE_A0:
 903                                 break;
 904                         }
 905                         if (err)
 906                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 907                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 908                 }
 909
 910                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 911                                           0, MLX4_MCAST_DISABLE);
 912                 if (err)
 913                         en_err(priv, "Failed disabling multicast filter\n");
 914
 915                 /* Flush mcast filter and init it with broadcast address */
 916                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 917                                     1, MLX4_MCAST_CONFIG);
 918
 919                 /* Update multicast list - we cache all addresses so they won't
 920                  * change while HW is updated holding the command semaphor */
 921                 mlx4_en_cache_mclist(dev);
 922                 list_for_each_entry(addr_list, &priv->mc_list, list) {
 923                         mcast_addr = mlx4_mac_to_u64(addr_list->addr);
 924                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 925                                         mcast_addr, 0, MLX4_MCAST_CONFIG);
 926                 }
 927                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 928                                           0, MLX4_MCAST_ENABLE);
 929                 if (err)
 930                         en_err(priv, "Failed enabling multicast filter\n");
 931
 932                 update_addr_list_flags(priv, &priv->curr_mc_list, &priv->mc_list);
 933
 934                 list_for_each_entry_safe(addr_list, tmp, &priv->curr_mc_list, list) {
 935                         if (addr_list->action == MLX4_ADDR_LIST_REM) {
 936                                 /* detach this address and delete from list */
 937                                 memcpy(&mc_list[10], addr_list->addr, ETH_ALEN);
 938                                 mc_list[5] = priv->port;
 939                                 err = mlx4_multicast_detach(mdev->dev,
 940                                                             &priv->rss_map.indir_qp,
 941                                                             mc_list,
 942                                                             MLX4_PROT_ETH,
 943                                                             addr_list->reg_id);
 944                                 if (err)
 945                                         en_err(priv, "Fail to detach multicast address\n");
 946
 947                                 if (addr_list->tunnel_reg_id) {
 948                                         err = mlx4_flow_detach(priv->mdev->dev, addr_list->tunnel_reg_id);
 949                                         if (err)
 950                                                 en_err(priv, "Failed to detach multicast address\n");
 951                                 }
 952
 953                                 /* remove from list */
 954                                 list_del(&addr_list->list);
 955                                 kfree(addr_list);
 956                         } else if (addr_list->action == MLX4_ADDR_LIST_ADD) {
 957                                 /* attach the address */
 958                                 memcpy(&mc_list[10], addr_list->addr, ETH_ALEN);
 959                                 /* needed for B0 steering support */
 960                                 mc_list[5] = priv->port;
 961                                 err = mlx4_multicast_attach(mdev->dev,
 962                                                             &priv->rss_map.indir_qp,
 963                                                             mc_list,
 964                                                             priv->port, 0,
 965                                                             MLX4_PROT_ETH,
 966                                                             &addr_list->reg_id);
 967                                 if (err)
 968                                         en_err(priv, "Fail to attach multicast address\n");
 969
 970                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
 971                                                                &addr_list->tunnel_reg_id);
 972                                 if (err)
 973                                         en_err(priv, "Failed to attach multicast address\n");
 974                         }
 975                 }
 976         }
 977 }
 978
 979 static void mlx4_en_do_unicast(struct mlx4_en_priv *priv,
 980                                struct net_device *dev,
 981                                struct mlx4_en_dev *mdev)
 982 {
 983         struct mlx4_en_addr_list *addr_list, *tmp;
 984         int err;
 985
 986         /* Update unicast list */
 987         mlx4_en_cache_uclist(dev);
 988
 989         update_addr_list_flags(priv, &priv->curr_uc_list, &priv->uc_list);
 990
 991         list_for_each_entry_safe(addr_list, tmp, &priv->curr_uc_list, list) {
 992                 if (addr_list->action == MLX4_ADDR_LIST_REM) {
 993                         mlx4_en_uc_steer_release(priv, addr_list->addr,
 994                                                  priv->rss_map.indir_qp.qpn,
 995                                                  addr_list->reg_id);
 996                         /* remove from list */
 997                         list_del(&addr_list->list);
 998                         kfree(addr_list);
 999                 } else if (addr_list->action == MLX4_ADDR_LIST_ADD) {
1000                         err = mlx4_en_uc_steer_add(priv, addr_list->addr,
1001                                                    &priv->rss_map.indir_qp.qpn,
1002                                                    &addr_list->reg_id);
1003                         if (err)
1004                                 en_err(priv, "Fail to add unicast address\n");
1005                 }
1006         }
1007 }
1008
1009 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1010 {
1011         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1012                                                  rx_mode_task);
1013         struct mlx4_en_dev *mdev = priv->mdev;
1014         struct net_device *dev = priv->dev;
1015
1016         mutex_lock(&mdev->state_lock);
1017         if (!mdev->device_up) {
1018                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1019                 goto out;
1020         }
1021         if (!priv->port_up) {
1022                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1023                 goto out;
1024         }
1025         if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1026                 if (priv->port_state.link_state) {
1027                         priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1028                         /* update netif baudrate */
1029                         priv->dev->if_baudrate =
1030                             IF_Mbps(priv->port_state.link_speed);
1031                         /* Important note: the following call for if_link_state_change
1032                          * is needed for interface up scenario (start port, link state
1033                          * change) */
1034                         if_link_state_change(priv->dev, LINK_STATE_UP);
1035                         en_dbg(HW, priv, "Link Up\n");
1036                 }
1037         }
1038
1039         /* Set unicast rules */
1040         mlx4_en_do_unicast(priv, dev, mdev);
1041
1042         /* Promsicuous mode: disable all filters */
1043         if ((dev->if_flags & IFF_PROMISC) ||
1044             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1045                 mlx4_en_set_promisc_mode(priv, mdev);
1046         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1047                 /* Not in promiscuous mode */
1048                 mlx4_en_clear_promisc_mode(priv, mdev);
1049         }
1050
1051         /* Set multicast rules */
1052         mlx4_en_do_multicast(priv, dev, mdev);
1053 out:
1054         mutex_unlock(&mdev->state_lock);
1055 }
1056
1057 static void mlx4_en_watchdog_timeout(void *arg)
1058 {
1059         struct mlx4_en_priv *priv = arg;
1060         struct mlx4_en_dev *mdev = priv->mdev;
1061
1062         en_dbg(DRV, priv, "Scheduling watchdog\n");
1063         queue_work(mdev->workqueue, &priv->watchdog_task);
1064         if (priv->port_up)
1065                 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1066                                 mlx4_en_watchdog_timeout, priv);
1067 }
1068
1069
1070
1071 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1072 {
1073         struct mlx4_en_cq *cq;
1074         int i;
1075
1076         /* If we haven't received a specific coalescing setting
1077          * (module param), we set the moderation parameters as follows:
1078          * - moder_cnt is set to the number of mtu sized packets to
1079          *   satisfy our coalescing target.
1080          * - moder_time is set to a fixed value.
1081          */
1082         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1083         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1084         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1085         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1086         en_dbg(INTR, priv, "Default coalesing params for mtu: %u - "
1087                "rx_frames:%d rx_usecs:%d\n",
1088                (unsigned)priv->dev->if_mtu, priv->rx_frames, priv->rx_usecs);
1089
1090         /* Setup cq moderation params */
1091         for (i = 0; i < priv->rx_ring_num; i++) {
1092                 cq = priv->rx_cq[i];
1093                 cq->moder_cnt = priv->rx_frames;
1094                 cq->moder_time = priv->rx_usecs;
1095                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1096                 priv->last_moder_packets[i] = 0;
1097                 priv->last_moder_bytes[i] = 0;
1098         }
1099
1100         for (i = 0; i < priv->tx_ring_num; i++) {
1101                 cq = priv->tx_cq[i];
1102                 cq->moder_cnt = priv->tx_frames;
1103                 cq->moder_time = priv->tx_usecs;
1104         }
1105
1106         /* Reset auto-moderation params */
1107         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1108         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1109         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1110         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1111         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1112         priv->adaptive_rx_coal = 1;
1113         priv->last_moder_jiffies = 0;
1114         priv->last_moder_tx_packets = 0;
1115 }
1116
1117 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1118 {
1119         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1120         struct mlx4_en_cq *cq;
1121         unsigned long packets;
1122         unsigned long rate;
1123         unsigned long avg_pkt_size;
1124         unsigned long rx_packets;
1125         unsigned long rx_bytes;
1126         unsigned long rx_pkt_diff;
1127         int moder_time;
1128         int ring, err;
1129
1130         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1131                 return;
1132
1133         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1134                 spin_lock(&priv->stats_lock);
1135                 rx_packets = priv->rx_ring[ring]->packets;
1136                 rx_bytes = priv->rx_ring[ring]->bytes;
1137                 spin_unlock(&priv->stats_lock);
1138
1139                 rx_pkt_diff = ((unsigned long) (rx_packets -
1140                                 priv->last_moder_packets[ring]));
1141                 packets = rx_pkt_diff;
1142                 rate = packets * HZ / period;
1143                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1144                                 priv->last_moder_bytes[ring])) / packets : 0;
1145
1146                 /* Apply auto-moderation only when packet rate
1147                  * exceeds a rate that it matters */
1148                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1149                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1150                         if (rate < priv->pkt_rate_low)
1151                                 moder_time = priv->rx_usecs_low;
1152                         else if (rate > priv->pkt_rate_high)
1153                                 moder_time = priv->rx_usecs_high;
1154                         else
1155                                 moder_time = (rate - priv->pkt_rate_low) *
1156                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1157                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1158                                         priv->rx_usecs_low;
1159                 } else {
1160                         moder_time = priv->rx_usecs_low;
1161                 }
1162
1163                 if (moder_time != priv->last_moder_time[ring]) {
1164                         priv->last_moder_time[ring] = moder_time;
1165                         cq = priv->rx_cq[ring];
1166                         cq->moder_time = moder_time;
1167                         cq->moder_cnt = priv->rx_frames;
1168                         err = mlx4_en_set_cq_moder(priv, cq);
1169                         if (err)
1170                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1171                                        ring);
1172                 }
1173                 priv->last_moder_packets[ring] = rx_packets;
1174                 priv->last_moder_bytes[ring] = rx_bytes;
1175         }
1176
1177         priv->last_moder_jiffies = jiffies;
1178 }
1179
1180 static void mlx4_en_do_get_stats(struct work_struct *work)
1181 {
1182         struct delayed_work *delay = to_delayed_work(work);
1183         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1184                                                  stats_task);
1185         struct mlx4_en_dev *mdev = priv->mdev;
1186         int err;
1187
1188         mutex_lock(&mdev->state_lock);
1189         if (mdev->device_up) {
1190                 if (priv->port_up) {
1191                         if (mlx4_is_slave(mdev->dev))
1192                                 err = mlx4_en_get_vport_stats(mdev, priv->port);
1193                         else
1194                                 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1195                         if (err)
1196                                 en_dbg(HW, priv, "Could not update stats\n");
1197
1198                         mlx4_en_auto_moderation(priv);
1199                 }
1200
1201                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1202         }
1203         mutex_unlock(&mdev->state_lock);
1204 }
1205
1206 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1207  * periodically
1208  */
1209 static void mlx4_en_service_task(struct work_struct *work)
1210 {
1211         struct delayed_work *delay = to_delayed_work(work);
1212         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1213                                                  service_task);
1214         struct mlx4_en_dev *mdev = priv->mdev;
1215
1216         mutex_lock(&mdev->state_lock);
1217         if (mdev->device_up) {
1218                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1219                                    SERVICE_TASK_DELAY);
1220         }
1221         mutex_unlock(&mdev->state_lock);
1222 }
1223
1224 static void mlx4_en_linkstate(struct work_struct *work)
1225 {
1226         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1227                                                  linkstate_task);
1228         struct mlx4_en_dev *mdev = priv->mdev;
1229         int linkstate = priv->link_state;
1230
1231         mutex_lock(&mdev->state_lock);
1232         /* If observable port state changed set carrier state and
1233          * report to system log */
1234         if (priv->last_link_state != linkstate) {
1235                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1236                         en_info(priv, "Link Down\n");
1237                         if_link_state_change(priv->dev, LINK_STATE_DOWN);
1238                         /* update netif baudrate */
1239                         priv->dev->if_baudrate = 0;
1240
1241                 /* make sure the port is up before notifying the OS.
1242                  * This is tricky since we get here on INIT_PORT and
1243                  * in such case we can't tell the OS the port is up.
1244                  * To solve this there is a call to if_link_state_change
1245                  * in set_rx_mode.
1246                  * */
1247                 } else if (priv->port_up && (linkstate == MLX4_DEV_EVENT_PORT_UP)){
1248                         if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
1249                                 en_info(priv, "Query port failed\n");
1250                         priv->dev->if_baudrate =
1251                             IF_Mbps(priv->port_state.link_speed);
1252                         en_info(priv, "Link Up\n");
1253                         if_link_state_change(priv->dev, LINK_STATE_UP);
1254                 }
1255         }
1256         priv->last_link_state = linkstate;
1257         mutex_unlock(&mdev->state_lock);
1258 }
1259
1260
1261 int mlx4_en_start_port(struct net_device *dev)
1262 {
1263         struct mlx4_en_priv *priv = netdev_priv(dev);
1264         struct mlx4_en_dev *mdev = priv->mdev;
1265         struct mlx4_en_cq *cq;
1266         struct mlx4_en_tx_ring *tx_ring;
1267         int rx_index = 0;
1268         int tx_index = 0;
1269         int err = 0;
1270         int i;
1271         int j;
1272         u8 mc_list[16] = {0};
1273
1274
1275         if (priv->port_up) {
1276                 en_dbg(DRV, priv, "start port called while port already up\n");
1277                 return 0;
1278         }
1279
1280         INIT_LIST_HEAD(&priv->mc_list);
1281         INIT_LIST_HEAD(&priv->uc_list);
1282         INIT_LIST_HEAD(&priv->curr_mc_list);
1283         INIT_LIST_HEAD(&priv->curr_uc_list);
1284         INIT_LIST_HEAD(&priv->ethtool_list);
1285
1286         /* Calculate Rx buf size */
1287         dev->if_mtu = min(dev->if_mtu, priv->max_mtu);
1288         mlx4_en_calc_rx_buf(dev);
1289         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_size);
1290
1291         /* Configure rx cq's and rings */
1292         err = mlx4_en_activate_rx_rings(priv);
1293         if (err) {
1294                 en_err(priv, "Failed to activate RX rings\n");
1295                 return err;
1296         }
1297         for (i = 0; i < priv->rx_ring_num; i++) {
1298                 cq = priv->rx_cq[i];
1299
1300                 mlx4_en_cq_init_lock(cq);
1301                 err = mlx4_en_activate_cq(priv, cq, i);
1302                 if (err) {
1303                         en_err(priv, "Failed activating Rx CQ\n");
1304                         goto cq_err;
1305                 }
1306                 for (j = 0; j < cq->size; j++)
1307                         cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1308                 err = mlx4_en_set_cq_moder(priv, cq);
1309                 if (err) {
1310                         en_err(priv, "Failed setting cq moderation parameters");
1311                         mlx4_en_deactivate_cq(priv, cq);
1312                         goto cq_err;
1313                 }
1314                 mlx4_en_arm_cq(priv, cq);
1315                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1316                 ++rx_index;
1317         }
1318
1319         /* Set qp number */
1320         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1321         err = mlx4_en_get_qp(priv);
1322         if (err) {
1323                 en_err(priv, "Failed getting eth qp\n");
1324                 goto cq_err;
1325         }
1326         mdev->mac_removed[priv->port] = 0;
1327
1328         priv->counter_index =
1329                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1330
1331         err = mlx4_en_config_rss_steer(priv);
1332         if (err) {
1333                 en_err(priv, "Failed configuring rss steering\n");
1334                 goto mac_err;
1335         }
1336
1337         err = mlx4_en_create_drop_qp(priv);
1338         if (err)
1339                 goto rss_err;
1340
1341         /* Configure tx cq's and rings */
1342         for (i = 0; i < priv->tx_ring_num; i++) {
1343                 /* Configure cq */
1344                 cq = priv->tx_cq[i];
1345                 err = mlx4_en_activate_cq(priv, cq, i);
1346                 if (err) {
1347                         en_err(priv, "Failed activating Tx CQ\n");
1348                         goto tx_err;
1349                 }
1350                 err = mlx4_en_set_cq_moder(priv, cq);
1351                 if (err) {
1352                         en_err(priv, "Failed setting cq moderation parameters");
1353                         mlx4_en_deactivate_cq(priv, cq);
1354                         goto tx_err;
1355                 }
1356                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1357                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1358
1359                 /* Configure ring */
1360                 tx_ring = priv->tx_ring[i];
1361
1362                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1363                                                i / priv->num_tx_rings_p_up);
1364                 if (err) {
1365                         en_err(priv, "Failed activating Tx ring %d\n", i);
1366                         mlx4_en_deactivate_cq(priv, cq);
1367                         goto tx_err;
1368                 }
1369
1370                 /* Arm CQ for TX completions */
1371                 mlx4_en_arm_cq(priv, cq);
1372
1373                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1374                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1375                         *((u32 *) (tx_ring->buf + j)) = INIT_OWNER_BIT;
1376                 ++tx_index;
1377         }
1378
1379         /* Configure port */
1380         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1381                                     priv->rx_mb_size,
1382                                     priv->prof->tx_pause,
1383                                     priv->prof->tx_ppp,
1384                                     priv->prof->rx_pause,
1385                                     priv->prof->rx_ppp);
1386         if (err) {
1387                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1388                        priv->port, err);
1389                 goto tx_err;
1390         }
1391         /* Set default qp number */
1392         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1393         if (err) {
1394                 en_err(priv, "Failed setting default qp numbers\n");
1395                 goto tx_err;
1396         }
1397
1398         /* Init port */
1399         en_dbg(HW, priv, "Initializing port\n");
1400         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1401         if (err) {
1402                 en_err(priv, "Failed Initializing port\n");
1403                 goto tx_err;
1404         }
1405
1406         /* Attach rx QP to bradcast address */
1407         memset(&mc_list[10], 0xff, ETH_ALEN);
1408         mc_list[5] = priv->port; /* needed for B0 steering support */
1409         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1410                                   priv->port, 0, MLX4_PROT_ETH,
1411                                   &priv->broadcast_id))
1412                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1413
1414         /* Must redo promiscuous mode setup. */
1415         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1416
1417         /* Schedule multicast task to populate multicast list */
1418         queue_work(mdev->workqueue, &priv->rx_mode_task);
1419
1420         priv->port_up = true;
1421
1422         /* Enable the queues. */
1423         dev->if_drv_flags &= ~IFF_DRV_OACTIVE;
1424         dev->if_drv_flags |= IFF_DRV_RUNNING;
1425 #ifdef CONFIG_DEBUG_FS
1426         mlx4_en_create_debug_files(priv);
1427 #endif
1428         callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1429                     mlx4_en_watchdog_timeout, priv);
1430
1431
1432         return 0;
1433
1434 tx_err:
1435         while (tx_index--) {
1436                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1437                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1438         }
1439         mlx4_en_destroy_drop_qp(priv);
1440 rss_err:
1441         mlx4_en_release_rss_steer(priv);
1442 mac_err:
1443         mlx4_en_put_qp(priv);
1444 cq_err:
1445         while (rx_index--)
1446                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1447         for (i = 0; i < priv->rx_ring_num; i++)
1448                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1449
1450         return err; /* need to close devices */
1451 }
1452
1453
1454 void mlx4_en_stop_port(struct net_device *dev)
1455 {
1456         struct mlx4_en_priv *priv = netdev_priv(dev);
1457         struct mlx4_en_dev *mdev = priv->mdev;
1458         struct mlx4_en_addr_list *addr_list, *tmp;
1459         int i;
1460         u8 mc_list[16] = {0};
1461
1462         if (!priv->port_up) {
1463                 en_dbg(DRV, priv, "stop port called while port already down\n");
1464                 return;
1465         }
1466
1467 #ifdef CONFIG_DEBUG_FS
1468         mlx4_en_delete_debug_files(priv);
1469 #endif
1470
1471         /* close port*/
1472         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1473
1474         /* Set port as not active */
1475         priv->port_up = false;
1476         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1477
1478         /* Promsicuous mode */
1479         if (mdev->dev->caps.steering_mode ==
1480             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1481                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1482                                  MLX4_EN_FLAG_MC_PROMISC);
1483                 mlx4_flow_steer_promisc_remove(mdev->dev,
1484                                                priv->port,
1485                                                MLX4_FS_ALL_DEFAULT);
1486                 mlx4_flow_steer_promisc_remove(mdev->dev,
1487                                                priv->port,
1488                                                MLX4_FS_MC_DEFAULT);
1489         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1490                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1491
1492                 /* Disable promiscouos mode */
1493                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1494                                             priv->port);
1495
1496                 /* Disable Multicast promisc */
1497                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1498                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1499                                                       priv->port);
1500                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1501                 }
1502         }
1503
1504         /* Detach All unicasts */
1505         list_for_each_entry(addr_list, &priv->curr_uc_list, list) {
1506                 mlx4_en_uc_steer_release(priv, addr_list->addr,
1507                                          priv->rss_map.indir_qp.qpn,
1508                                          addr_list->reg_id);
1509         }
1510         mlx4_en_clear_uclist(dev);
1511         list_for_each_entry_safe(addr_list, tmp, &priv->curr_uc_list, list) {
1512                 list_del(&addr_list->list);
1513                 kfree(addr_list);
1514         }
1515
1516         /* Detach All multicasts */
1517         memset(&mc_list[10], 0xff, ETH_ALEN);
1518         mc_list[5] = priv->port; /* needed for B0 steering support */
1519         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1520                               MLX4_PROT_ETH, priv->broadcast_id);
1521         list_for_each_entry(addr_list, &priv->curr_mc_list, list) {
1522                 memcpy(&mc_list[10], addr_list->addr, ETH_ALEN);
1523                 mc_list[5] = priv->port;
1524                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1525                                       mc_list, MLX4_PROT_ETH, addr_list->reg_id);
1526         }
1527         mlx4_en_clear_mclist(dev);
1528         list_for_each_entry_safe(addr_list, tmp, &priv->curr_mc_list, list) {
1529                 list_del(&addr_list->list);
1530                 kfree(addr_list);
1531         }
1532
1533         /* Flush multicast filter */
1534         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1535         mlx4_en_destroy_drop_qp(priv);
1536
1537         /* Free TX Rings */
1538         for (i = 0; i < priv->tx_ring_num; i++) {
1539                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1540                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1541         }
1542         msleep(10);
1543
1544         for (i = 0; i < priv->tx_ring_num; i++)
1545                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1546
1547         /* Free RSS qps */
1548         mlx4_en_release_rss_steer(priv);
1549
1550         /* Unregister Mac address for the port */
1551         mlx4_en_put_qp(priv);
1552         mdev->mac_removed[priv->port] = 1;
1553
1554         /* Free RX Rings */
1555         for (i = 0; i < priv->rx_ring_num; i++) {
1556                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1557                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1558                 mlx4_en_deactivate_cq(priv, cq);
1559         }
1560
1561         callout_stop(&priv->watchdog_timer);
1562
1563         dev->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1564 }
1565
1566 static void mlx4_en_restart(struct work_struct *work)
1567 {
1568         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1569                                                  watchdog_task);
1570         struct mlx4_en_dev *mdev = priv->mdev;
1571         struct net_device *dev = priv->dev;
1572         struct mlx4_en_tx_ring *ring;
1573         int i;
1574
1575
1576         if (priv->blocked == 0 || priv->port_up == 0)
1577                 return;
1578         for (i = 0; i < priv->tx_ring_num; i++) {
1579                 int watchdog_time;
1580
1581                 ring = priv->tx_ring[i];
1582                 watchdog_time = READ_ONCE(ring->watchdog_time);
1583                 if (watchdog_time != 0 &&
1584                     time_after(ticks, ring->watchdog_time))
1585                         goto reset;
1586         }
1587         return;
1588
1589 reset:
1590         priv->port_stats.tx_timeout++;
1591         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1592
1593         mutex_lock(&mdev->state_lock);
1594         if (priv->port_up) {
1595                 mlx4_en_stop_port(dev);
1596                 //for (i = 0; i < priv->tx_ring_num; i++)
1597                 //        netdev_tx_reset_queue(priv->tx_ring[i]->tx_queue);
1598                 if (mlx4_en_start_port(dev))
1599                         en_err(priv, "Failed restarting port %d\n", priv->port);
1600         }
1601         mutex_unlock(&mdev->state_lock);
1602 }
1603
1604 static void mlx4_en_clear_stats(struct net_device *dev)
1605 {
1606         struct mlx4_en_priv *priv = netdev_priv(dev);
1607         struct mlx4_en_dev *mdev = priv->mdev;
1608         int i;
1609
1610         if (!mlx4_is_slave(mdev->dev))
1611                 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1612                         en_dbg(HW, priv, "Failed dumping statistics\n");
1613
1614         memset(&priv->pstats, 0, sizeof(priv->pstats));
1615         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1616         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1617         memset(&priv->vport_stats, 0, sizeof(priv->vport_stats));
1618
1619         for (i = 0; i < priv->tx_ring_num; i++) {
1620                 priv->tx_ring[i]->bytes = 0;
1621                 priv->tx_ring[i]->packets = 0;
1622                 priv->tx_ring[i]->tx_csum = 0;
1623                 priv->tx_ring[i]->oversized_packets = 0;
1624         }
1625         for (i = 0; i < priv->rx_ring_num; i++) {
1626                 priv->rx_ring[i]->bytes = 0;
1627                 priv->rx_ring[i]->packets = 0;
1628                 priv->rx_ring[i]->csum_ok = 0;
1629                 priv->rx_ring[i]->csum_none = 0;
1630         }
1631 }
1632
1633 static void mlx4_en_open(void* arg)
1634 {
1635
1636         struct mlx4_en_priv *priv;
1637         struct mlx4_en_dev *mdev;
1638         struct net_device *dev;
1639         int err = 0;
1640
1641         priv = arg;
1642         mdev = priv->mdev;
1643         dev = priv->dev;
1644
1645
1646         mutex_lock(&mdev->state_lock);
1647
1648         if (!mdev->device_up) {
1649                 en_err(priv, "Cannot open - device down/disabled\n");
1650                 goto out;
1651         }
1652
1653         /* Reset HW statistics and SW counters */
1654         mlx4_en_clear_stats(dev);
1655
1656         err = mlx4_en_start_port(dev);
1657         if (err)
1658                 en_err(priv, "Failed starting port:%d\n", priv->port);
1659
1660 out:
1661         mutex_unlock(&mdev->state_lock);
1662         return;
1663 }
1664
1665 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1666 {
1667         int i;
1668
1669 #ifdef CONFIG_RFS_ACCEL
1670         if (priv->dev->rx_cpu_rmap) {
1671                 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1672                 priv->dev->rx_cpu_rmap = NULL;
1673         }
1674 #endif
1675
1676         for (i = 0; i < priv->tx_ring_num; i++) {
1677                 if (priv->tx_ring && priv->tx_ring[i])
1678                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1679                 if (priv->tx_cq && priv->tx_cq[i])
1680                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1681         }
1682
1683         for (i = 0; i < priv->rx_ring_num; i++) {
1684                 if (priv->rx_ring[i])
1685                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1686                                 priv->prof->rx_ring_size);
1687                 if (priv->rx_cq[i])
1688                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1689         }
1690
1691         if (priv->stat_sysctl != NULL)
1692                 sysctl_ctx_free(&priv->stat_ctx);
1693 }
1694
1695 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1696 {
1697         struct mlx4_en_port_profile *prof = priv->prof;
1698         int i;
1699         int node = 0;
1700
1701         /* Create rx Rings */
1702         for (i = 0; i < priv->rx_ring_num; i++) {
1703                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1704                                       prof->rx_ring_size, i, RX, node))
1705                         goto err;
1706
1707                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1708                                            prof->rx_ring_size, node))
1709                         goto err;
1710         }
1711
1712         /* Create tx Rings */
1713         for (i = 0; i < priv->tx_ring_num; i++) {
1714                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1715                                       prof->tx_ring_size, i, TX, node))
1716                         goto err;
1717
1718                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1719                                            prof->tx_ring_size, TXBB_SIZE, node, i))
1720                         goto err;
1721         }
1722
1723 #ifdef CONFIG_RFS_ACCEL
1724         priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->rx_ring_num);
1725         if (!priv->dev->rx_cpu_rmap)
1726                 goto err;
1727 #endif
1728         /* Re-create stat sysctls in case the number of rings changed. */
1729         mlx4_en_sysctl_stat(priv);
1730         return 0;
1731
1732 err:
1733         en_err(priv, "Failed to allocate NIC resources\n");
1734         for (i = 0; i < priv->rx_ring_num; i++) {
1735                 if (priv->rx_ring[i])
1736                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1737                                                 prof->rx_ring_size);
1738                 if (priv->rx_cq[i])
1739                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1740         }
1741         for (i = 0; i < priv->tx_ring_num; i++) {
1742                 if (priv->tx_ring[i])
1743                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1744                 if (priv->tx_cq[i])
1745                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1746         }
1747         priv->port_up = false;
1748         return -ENOMEM;
1749 }
1750
1751 struct en_port_attribute {
1752         struct attribute attr;
1753         ssize_t (*show)(struct en_port *, struct en_port_attribute *, char *buf);
1754         ssize_t (*store)(struct en_port *, struct en_port_attribute *, char *buf, size_t count);
1755 };
1756
1757 #define PORT_ATTR_RO(_name) \
1758 struct en_port_attribute en_port_attr_##_name = __ATTR_RO(_name)
1759
1760 #define EN_PORT_ATTR(_name, _mode, _show, _store) \
1761 struct en_port_attribute en_port_attr_##_name = __ATTR(_name, _mode, _show, _store)
1762
1763 void mlx4_en_destroy_netdev(struct net_device *dev)
1764 {
1765         struct mlx4_en_priv *priv = netdev_priv(dev);
1766         struct mlx4_en_dev *mdev = priv->mdev;
1767
1768         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1769
1770         /* don't allow more IOCTLs */
1771         priv->gone = 1;
1772
1773         /* XXX wait a bit to allow IOCTL handlers to complete */
1774         pause("W", hz);
1775
1776         if (priv->vlan_attach != NULL)
1777                 EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach);
1778         if (priv->vlan_detach != NULL)
1779                 EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach);
1780
1781         /* Unregister device - this will close the port if it was up */
1782         if (priv->registered) {
1783                 mutex_lock(&mdev->state_lock);
1784                 ether_ifdetach(dev);
1785                 mutex_unlock(&mdev->state_lock);
1786         }
1787
1788         mutex_lock(&mdev->state_lock);
1789         mlx4_en_stop_port(dev);
1790         mutex_unlock(&mdev->state_lock);
1791
1792         if (priv->allocated)
1793                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1794
1795         cancel_delayed_work(&priv->stats_task);
1796         cancel_delayed_work(&priv->service_task);
1797         /* flush any pending task for this netdev */
1798         flush_workqueue(mdev->workqueue);
1799         callout_drain(&priv->watchdog_timer);
1800
1801         /* Detach the netdev so tasks would not attempt to access it */
1802         mutex_lock(&mdev->state_lock);
1803         mdev->pndev[priv->port] = NULL;
1804         mutex_unlock(&mdev->state_lock);
1805
1806
1807         mlx4_en_free_resources(priv);
1808
1809         /* freeing the sysctl conf cannot be called from within mlx4_en_free_resources */
1810         if (priv->conf_sysctl != NULL)
1811                 sysctl_ctx_free(&priv->conf_ctx);
1812
1813         kfree(priv->tx_ring);
1814         kfree(priv->tx_cq);
1815
1816         kfree(priv);
1817         if_free(dev);
1818
1819 }
1820
1821 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1822 {
1823         struct mlx4_en_priv *priv = netdev_priv(dev);
1824         struct mlx4_en_dev *mdev = priv->mdev;
1825         int err = 0;
1826
1827         en_dbg(DRV, priv, "Change MTU called - current:%u new:%u\n",
1828                (unsigned)dev->if_mtu, (unsigned)new_mtu);
1829
1830         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
1831                 en_err(priv, "Bad MTU size:%d, max %u.\n", new_mtu,
1832                     priv->max_mtu);
1833                 return -EPERM;
1834         }
1835         mutex_lock(&mdev->state_lock);
1836         dev->if_mtu = new_mtu;
1837         if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1838                 if (!mdev->device_up) {
1839                         /* NIC is probably restarting - let watchdog task reset
1840                          *                          * the port */
1841                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
1842                 } else {
1843                         mlx4_en_stop_port(dev);
1844                         err = mlx4_en_start_port(dev);
1845                         if (err) {
1846                                 en_err(priv, "Failed restarting port:%d\n",
1847                                                 priv->port);
1848                                 queue_work(mdev->workqueue, &priv->watchdog_task);
1849                         }
1850                 }
1851         }
1852         mutex_unlock(&mdev->state_lock);
1853         return 0;
1854 }
1855
1856 static int mlx4_en_calc_media(struct mlx4_en_priv *priv)
1857 {
1858         int trans_type;
1859         int active;
1860
1861         active = IFM_ETHER;
1862         if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN)
1863                 return (active);
1864         active |= IFM_FDX;
1865         trans_type = priv->port_state.transceiver;
1866         /* XXX I don't know all of the transceiver values. */
1867         switch (priv->port_state.link_speed) {
1868         case 100:
1869                 active |= IFM_100_T;
1870                 break;
1871         case 1000:
1872                 active |= IFM_1000_T;
1873                 break;
1874         case 10000:
1875                 if (trans_type > 0 && trans_type <= 0xC)
1876                         active |= IFM_10G_SR;
1877                 else if (trans_type == 0x80 || trans_type == 0)
1878                         active |= IFM_10G_CX4;
1879                 break;
1880         case 40000:
1881                 active |= IFM_40G_CR4;
1882                 break;
1883         }
1884         if (priv->prof->tx_pause)
1885                 active |= IFM_ETH_TXPAUSE;
1886         if (priv->prof->rx_pause)
1887                 active |= IFM_ETH_RXPAUSE;
1888
1889         return (active);
1890 }
1891
1892 static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr)
1893 {
1894         struct mlx4_en_priv *priv;
1895
1896         priv = dev->if_softc;
1897         ifmr->ifm_status = IFM_AVALID;
1898         if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN)
1899                 ifmr->ifm_status |= IFM_ACTIVE;
1900         ifmr->ifm_active = mlx4_en_calc_media(priv);
1901
1902         return;
1903 }
1904
1905 static int mlx4_en_media_change(struct ifnet *dev)
1906 {
1907         struct mlx4_en_priv *priv;
1908         struct ifmedia *ifm;
1909         int rxpause;
1910         int txpause;
1911         int error;
1912
1913         priv = dev->if_softc;
1914         ifm = &priv->media;
1915         rxpause = txpause = 0;
1916         error = 0;
1917
1918         if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1919                 return (EINVAL);
1920         switch (IFM_SUBTYPE(ifm->ifm_media)) {
1921         case IFM_AUTO:
1922                 break;
1923         case IFM_10G_SR:
1924         case IFM_10G_CX4:
1925         case IFM_1000_T:
1926         case IFM_40G_CR4:
1927                 if ((IFM_SUBTYPE(ifm->ifm_media)
1928                         == IFM_SUBTYPE(mlx4_en_calc_media(priv)))
1929                         && (ifm->ifm_media & IFM_FDX))
1930                         break;
1931                 /* Fallthrough */
1932         default:
1933                 printf("%s: Only auto media type\n", if_name(dev));
1934                 return (EINVAL);
1935         }
1936         /* Allow user to set/clear pause */
1937         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE)
1938                 rxpause = 1;
1939         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE)
1940                 txpause = 1;
1941         if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) {
1942                 priv->prof->tx_pause = txpause;
1943                 priv->prof->rx_pause = rxpause;
1944                 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1945                      priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause,
1946                      priv->prof->tx_ppp, priv->prof->rx_pause,
1947                      priv->prof->rx_ppp);
1948         }
1949         return (error);
1950 }
1951
1952 static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data)
1953 {
1954         struct mlx4_en_priv *priv;
1955         struct mlx4_en_dev *mdev;
1956         struct ifreq *ifr;
1957         int error;
1958         int mask;
1959         struct ifrsskey *ifrk;
1960         const u32 *key;
1961         struct ifrsshash *ifrh;
1962         u8 rss_mask;
1963
1964         error = 0;
1965         mask = 0;
1966         priv = dev->if_softc;
1967
1968         /* check if detaching */
1969         if (priv == NULL || priv->gone != 0)
1970                 return (ENXIO);
1971
1972         mdev = priv->mdev;
1973         ifr = (struct ifreq *) data;
1974
1975         switch (command) {
1976         case SIOCSIFMTU:
1977                 error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu);
1978                 break;
1979         case SIOCSIFFLAGS:
1980                 if (dev->if_flags & IFF_UP) {
1981                         if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1982                                 mutex_lock(&mdev->state_lock);
1983                                 mlx4_en_start_port(dev);
1984                                 mutex_unlock(&mdev->state_lock);
1985                         } else {
1986                                 mlx4_en_set_rx_mode(dev);
1987                         }
1988                 } else {
1989                         mutex_lock(&mdev->state_lock);
1990                         if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1991                                 mlx4_en_stop_port(dev);
1992                                 if_link_state_change(dev, LINK_STATE_DOWN);
1993                         }
1994                         mutex_unlock(&mdev->state_lock);
1995                 }
1996                 break;
1997         case SIOCADDMULTI:
1998         case SIOCDELMULTI:
1999                 mlx4_en_set_rx_mode(dev);
2000                 break;
2001         case SIOCSIFMEDIA:
2002         case SIOCGIFMEDIA:
2003                 error = ifmedia_ioctl(dev, ifr, &priv->media, command);
2004                 break;
2005         case SIOCSIFCAP:
2006                 mutex_lock(&mdev->state_lock);
2007                 mask = ifr->ifr_reqcap ^ dev->if_capenable;
2008                 if (mask & IFCAP_TXCSUM) {
2009                         dev->if_capenable ^= IFCAP_TXCSUM;
2010                         dev->if_hwassist ^= (CSUM_TCP | CSUM_UDP | CSUM_IP);
2011
2012                         if (IFCAP_TSO4 & dev->if_capenable &&
2013                             !(IFCAP_TXCSUM & dev->if_capenable)) {
2014                                 dev->if_capenable &= ~IFCAP_TSO4;
2015                                 dev->if_hwassist &= ~CSUM_IP_TSO;
2016                                 if_printf(dev,
2017                                     "tso4 disabled due to -txcsum.\n");
2018                         }
2019                 }
2020                 if (mask & IFCAP_TXCSUM_IPV6) {
2021                         dev->if_capenable ^= IFCAP_TXCSUM_IPV6;
2022                         dev->if_hwassist ^= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
2023
2024                         if (IFCAP_TSO6 & dev->if_capenable &&
2025                             !(IFCAP_TXCSUM_IPV6 & dev->if_capenable)) {
2026                                 dev->if_capenable &= ~IFCAP_TSO6;
2027                                 dev->if_hwassist &= ~CSUM_IP6_TSO;
2028                                 if_printf(dev,
2029                                     "tso6 disabled due to -txcsum6.\n");
2030                         }
2031                 }
2032                 if (mask & IFCAP_RXCSUM)
2033                         dev->if_capenable ^= IFCAP_RXCSUM;
2034                 if (mask & IFCAP_RXCSUM_IPV6)
2035                         dev->if_capenable ^= IFCAP_RXCSUM_IPV6;
2036
2037                 if (mask & IFCAP_TSO4) {
2038                         if (!(IFCAP_TSO4 & dev->if_capenable) &&
2039                             !(IFCAP_TXCSUM & dev->if_capenable)) {
2040                                 if_printf(dev, "enable txcsum first.\n");
2041                                 error = EAGAIN;
2042                                 goto out;
2043                         }
2044                         dev->if_capenable ^= IFCAP_TSO4;
2045                         dev->if_hwassist ^= CSUM_IP_TSO;
2046                 }
2047                 if (mask & IFCAP_TSO6) {
2048                         if (!(IFCAP_TSO6 & dev->if_capenable) &&
2049                             !(IFCAP_TXCSUM_IPV6 & dev->if_capenable)) {
2050                                 if_printf(dev, "enable txcsum6 first.\n");
2051                                 error = EAGAIN;
2052                                 goto out;
2053                         }
2054                         dev->if_capenable ^= IFCAP_TSO6;
2055                         dev->if_hwassist ^= CSUM_IP6_TSO;
2056                 }
2057                 if (mask & IFCAP_LRO)
2058                         dev->if_capenable ^= IFCAP_LRO;
2059                 if (mask & IFCAP_VLAN_HWTAGGING)
2060                         dev->if_capenable ^= IFCAP_VLAN_HWTAGGING;
2061                 if (mask & IFCAP_VLAN_HWFILTER)
2062                         dev->if_capenable ^= IFCAP_VLAN_HWFILTER;
2063                 if (mask & IFCAP_WOL_MAGIC)
2064                         dev->if_capenable ^= IFCAP_WOL_MAGIC;
2065                 if (dev->if_drv_flags & IFF_DRV_RUNNING)
2066                         mlx4_en_start_port(dev);
2067 out:
2068                 mutex_unlock(&mdev->state_lock);
2069                 VLAN_CAPABILITIES(dev);
2070                 break;
2071 #if __FreeBSD_version >= 1100036
2072         case SIOCGI2C: {
2073                 struct ifi2creq i2c;
2074
2075                 error = copyin(ifr_data_get_ptr(ifr), &i2c, sizeof(i2c));
2076                 if (error)
2077                         break;
2078                 if (i2c.len > sizeof(i2c.data)) {
2079                         error = EINVAL;
2080                         break;
2081                 }
2082                 /*
2083                  * Note that we ignore i2c.addr here. The driver hardcodes
2084                  * the address to 0x50, while standard expects it to be 0xA0.
2085                  */
2086                 error = mlx4_get_module_info(mdev->dev, priv->port,
2087                     i2c.offset, i2c.len, i2c.data);
2088                 if (error < 0) {
2089                         error = -error;
2090                         break;
2091                 }
2092                 error = copyout(&i2c, ifr_data_get_ptr(ifr), sizeof(i2c));
2093                 break;
2094         }
2095 #endif
2096         case SIOCGIFRSSKEY:
2097                 ifrk = (struct ifrsskey *)data;
2098                 ifrk->ifrk_func = RSS_FUNC_TOEPLITZ;
2099                 mutex_lock(&mdev->state_lock);
2100                 key = mlx4_en_get_rss_key(priv, &ifrk->ifrk_keylen);
2101                 if (ifrk->ifrk_keylen > RSS_KEYLEN)
2102                         error = EINVAL;
2103                 else
2104                         memcpy(ifrk->ifrk_key, key, ifrk->ifrk_keylen);
2105                 mutex_unlock(&mdev->state_lock);
2106                 break;
2107
2108         case SIOCGIFRSSHASH:
2109                 mutex_lock(&mdev->state_lock);
2110                 rss_mask = mlx4_en_get_rss_mask(priv);
2111                 mutex_unlock(&mdev->state_lock);
2112                 ifrh = (struct ifrsshash *)data;
2113                 ifrh->ifrh_func = RSS_FUNC_TOEPLITZ;
2114                 ifrh->ifrh_types = 0;
2115                 if (rss_mask & MLX4_RSS_IPV4)
2116                         ifrh->ifrh_types |= RSS_TYPE_IPV4;
2117                 if (rss_mask & MLX4_RSS_TCP_IPV4)
2118                         ifrh->ifrh_types |= RSS_TYPE_TCP_IPV4;
2119                 if (rss_mask & MLX4_RSS_IPV6)
2120                         ifrh->ifrh_types |= RSS_TYPE_IPV6;
2121                 if (rss_mask & MLX4_RSS_TCP_IPV6)
2122                         ifrh->ifrh_types |= RSS_TYPE_TCP_IPV6;
2123                 if (rss_mask & MLX4_RSS_UDP_IPV4)
2124                         ifrh->ifrh_types |= RSS_TYPE_UDP_IPV4;
2125                 if (rss_mask & MLX4_RSS_UDP_IPV6)
2126                         ifrh->ifrh_types |= RSS_TYPE_UDP_IPV6;
2127                 break;
2128
2129         default:
2130                 error = ether_ioctl(dev, command, data);
2131                 break;
2132         }
2133
2134         return (error);
2135 }
2136
2137
2138 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2139                         struct mlx4_en_port_profile *prof)
2140 {
2141         struct net_device *dev;
2142         struct mlx4_en_priv *priv;
2143         uint8_t dev_addr[ETHER_ADDR_LEN];
2144         int err;
2145         int i;
2146
2147         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2148         dev = priv->dev = if_alloc(IFT_ETHER);
2149         if (dev == NULL) {
2150                 en_err(priv, "Net device allocation failed\n");
2151                 kfree(priv);
2152                 return -ENOMEM;
2153         }
2154         dev->if_softc = priv;
2155         if_initname(dev, "mlxen", (device_get_unit(
2156             mdev->pdev->dev.bsddev) * MLX4_MAX_PORTS) + port - 1);
2157         dev->if_mtu = ETHERMTU;
2158         dev->if_init = mlx4_en_open;
2159         dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
2160         dev->if_ioctl = mlx4_en_ioctl;
2161         dev->if_transmit = mlx4_en_transmit;
2162         dev->if_qflush = mlx4_en_qflush;
2163         dev->if_snd.ifq_maxlen = prof->tx_ring_size;
2164
2165         /*
2166          * Initialize driver private data
2167          */
2168         priv->counter_index = 0xff;
2169         spin_lock_init(&priv->stats_lock);
2170         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2171         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2172         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2173         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2174         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2175         callout_init(&priv->watchdog_timer, 1);
2176 #ifdef CONFIG_RFS_ACCEL
2177         INIT_LIST_HEAD(&priv->filters);
2178         spin_lock_init(&priv->filters_lock);
2179 #endif
2180
2181         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2182         priv->dev = dev;
2183         priv->mdev = mdev;
2184         priv->ddev = &mdev->pdev->dev;
2185         priv->prof = prof;
2186         priv->port = port;
2187         priv->port_up = false;
2188         priv->flags = prof->flags;
2189
2190         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2191         priv->tx_ring_num = prof->tx_ring_num;
2192         priv->tx_ring = kcalloc(MAX_TX_RINGS,
2193                                 sizeof(struct mlx4_en_tx_ring *), GFP_KERNEL);
2194         if (!priv->tx_ring) {
2195                 err = -ENOMEM;
2196                 goto out;
2197         }
2198         priv->tx_cq = kcalloc(sizeof(struct mlx4_en_cq *), MAX_TX_RINGS,
2199                         GFP_KERNEL);
2200         if (!priv->tx_cq) {
2201                 err = -ENOMEM;
2202                 goto out;
2203         }
2204
2205         priv->rx_ring_num = prof->rx_ring_num;
2206         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2207         priv->mac_index = -1;
2208         priv->last_ifq_jiffies = 0;
2209         priv->if_counters_rx_errors = 0;
2210         priv->if_counters_rx_no_buffer = 0;
2211 #ifdef CONFIG_MLX4_EN_DCB
2212         if (!mlx4_is_slave(priv->mdev->dev)) {
2213                 priv->dcbx_cap = DCB_CAP_DCBX_HOST;
2214                 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
2215                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2216                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2217                 } else {
2218                         en_info(priv, "QoS disabled - no HW support\n");
2219                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2220                 }
2221         }
2222 #endif
2223
2224         /* Query for default mac and max mtu */
2225         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2226         priv->mac = mdev->dev->caps.def_mac[priv->port];
2227         if (ILLEGAL_MAC(priv->mac)) {
2228 #if BITS_PER_LONG == 64
2229                 en_err(priv, "Port: %d, invalid mac burned: 0x%lx, quiting\n",
2230                                 priv->port, priv->mac);
2231 #elif BITS_PER_LONG == 32
2232                 en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
2233                                 priv->port, priv->mac);
2234 #endif
2235                 err = -EINVAL;
2236                 goto out;
2237         }
2238
2239         mlx4_en_sysctl_conf(priv);
2240
2241         err = mlx4_en_alloc_resources(priv);
2242         if (err)
2243                 goto out;
2244
2245         /* Allocate page for receive rings */
2246         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2247                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2248         if (err) {
2249                 en_err(priv, "Failed to allocate page for rx qps\n");
2250                 goto out;
2251         }
2252         priv->allocated = 1;
2253
2254         /*
2255          * Set driver features
2256          */
2257         dev->if_capabilities |= IFCAP_HWCSUM | IFCAP_HWCSUM_IPV6;
2258         dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
2259         dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER;
2260         dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU;
2261         dev->if_capabilities |= IFCAP_LRO;
2262         dev->if_capabilities |= IFCAP_HWSTATS;
2263
2264         if (mdev->LSO_support)
2265                 dev->if_capabilities |= IFCAP_TSO4 | IFCAP_TSO6 | IFCAP_VLAN_HWTSO;
2266
2267 #if __FreeBSD_version >= 1100000
2268         /* set TSO limits so that we don't have to drop TX packets */
2269         dev->if_hw_tsomax = MLX4_EN_TX_MAX_PAYLOAD_SIZE - (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN) /* hdr */;
2270         dev->if_hw_tsomaxsegcount = MLX4_EN_TX_MAX_MBUF_FRAGS - 1 /* hdr */;
2271         dev->if_hw_tsomaxsegsize = MLX4_EN_TX_MAX_MBUF_SIZE;
2272 #endif
2273
2274         dev->if_capenable = dev->if_capabilities;
2275
2276         dev->if_hwassist = 0;
2277         if (dev->if_capenable & (IFCAP_TSO4 | IFCAP_TSO6))
2278                 dev->if_hwassist |= CSUM_TSO;
2279         if (dev->if_capenable & IFCAP_TXCSUM)
2280                 dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP);
2281         if (dev->if_capenable & IFCAP_TXCSUM_IPV6)
2282                 dev->if_hwassist |= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
2283
2284
2285         /* Register for VLAN events */
2286         priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
2287             mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST);
2288         priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
2289             mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST);
2290
2291         mdev->pndev[priv->port] = dev;
2292
2293         priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN;
2294         mlx4_en_set_default_moderation(priv);
2295
2296         /* Set default MAC */
2297         for (i = 0; i < ETHER_ADDR_LEN; i++)
2298                 dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i));
2299
2300
2301         ether_ifattach(dev, dev_addr);
2302         if_link_state_change(dev, LINK_STATE_DOWN);
2303         ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK,
2304             mlx4_en_media_change, mlx4_en_media_status);
2305         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL);
2306         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL);
2307         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL);
2308         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_40G_CR4, 0, NULL);
2309         ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
2310         ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
2311
2312         NETDUMP_SET(dev, mlx4_en);
2313
2314         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2315         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2316
2317         priv->registered = 1;
2318
2319         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2320         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2321
2322
2323         priv->rx_mb_size = dev->if_mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
2324         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2325                                     priv->rx_mb_size,
2326                                     prof->tx_pause, prof->tx_ppp,
2327                                     prof->rx_pause, prof->rx_ppp);
2328         if (err) {
2329                 en_err(priv, "Failed setting port general configurations "
2330                        "for port %d, with error %d\n", priv->port, err);
2331                 goto out;
2332         }
2333
2334         /* Init port */
2335         en_warn(priv, "Initializing port\n");
2336         err = mlx4_INIT_PORT(mdev->dev, priv->port);
2337         if (err) {
2338                 en_err(priv, "Failed Initializing port\n");
2339                 goto out;
2340         }
2341
2342         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2343
2344         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2345                 queue_delayed_work(mdev->workqueue, &priv->service_task, SERVICE_TASK_DELAY);
2346
2347         return 0;
2348
2349 out:
2350         mlx4_en_destroy_netdev(dev);
2351         return err;
2352 }
2353
2354 static int mlx4_en_set_ring_size(struct net_device *dev,
2355     int rx_size, int tx_size)
2356 {
2357         struct mlx4_en_priv *priv = netdev_priv(dev);
2358         struct mlx4_en_dev *mdev = priv->mdev;
2359         int port_up = 0;
2360         int err = 0;
2361
2362         rx_size = roundup_pow_of_two(rx_size);
2363         rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
2364         rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
2365         tx_size = roundup_pow_of_two(tx_size);
2366         tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
2367         tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
2368
2369         if (rx_size == (priv->port_up ?
2370             priv->rx_ring[0]->actual_size : priv->rx_ring[0]->size) &&
2371             tx_size == priv->tx_ring[0]->size)
2372                 return 0;
2373         mutex_lock(&mdev->state_lock);
2374         if (priv->port_up) {
2375                 port_up = 1;
2376                 mlx4_en_stop_port(dev);
2377         }
2378         mlx4_en_free_resources(priv);
2379         priv->prof->tx_ring_size = tx_size;
2380         priv->prof->rx_ring_size = rx_size;
2381         err = mlx4_en_alloc_resources(priv);
2382         if (err) {
2383                 en_err(priv, "Failed reallocating port resources\n");
2384                 goto out;
2385         }
2386         if (port_up) {
2387                 err = mlx4_en_start_port(dev);
2388                 if (err)
2389                         en_err(priv, "Failed starting port\n");
2390         }
2391 out:
2392         mutex_unlock(&mdev->state_lock);
2393         return err;
2394 }
2395 static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS)
2396 {
2397         struct mlx4_en_priv *priv;
2398         int size;
2399         int error;
2400
2401         priv = arg1;
2402         size = priv->prof->rx_ring_size;
2403         error = sysctl_handle_int(oidp, &size, 0, req);
2404         if (error || !req->newptr)
2405                 return (error);
2406         error = -mlx4_en_set_ring_size(priv->dev, size,
2407             priv->prof->tx_ring_size);
2408         return (error);
2409 }
2410
2411 static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS)
2412 {
2413         struct mlx4_en_priv *priv;
2414         int size;
2415         int error;
2416
2417         priv = arg1;
2418         size = priv->prof->tx_ring_size;
2419         error = sysctl_handle_int(oidp, &size, 0, req);
2420         if (error || !req->newptr)
2421                 return (error);
2422         error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size,
2423             size);
2424
2425         return (error);
2426 }
2427
2428 static int mlx4_en_get_module_info(struct net_device *dev,
2429                                    struct ethtool_modinfo *modinfo)
2430 {
2431         struct mlx4_en_priv *priv = netdev_priv(dev);
2432         struct mlx4_en_dev *mdev = priv->mdev;
2433         int ret;
2434         u8 data[4];
2435
2436         /* Read first 2 bytes to get Module & REV ID */
2437         ret = mlx4_get_module_info(mdev->dev, priv->port,
2438                                    0/*offset*/, 2/*size*/, data);
2439
2440         if (ret < 2) {
2441                 en_err(priv, "Failed to read eeprom module first two bytes, error: 0x%x\n", -ret);
2442                 return -EIO;
2443         }
2444
2445         switch (data[0] /* identifier */) {
2446         case MLX4_MODULE_ID_QSFP:
2447                 modinfo->type = ETH_MODULE_SFF_8436;
2448                 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2449                 break;
2450         case MLX4_MODULE_ID_QSFP_PLUS:
2451                 if (data[1] >= 0x3) { /* revision id */
2452                         modinfo->type = ETH_MODULE_SFF_8636;
2453                         modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2454                 } else {
2455                         modinfo->type = ETH_MODULE_SFF_8436;
2456                         modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2457                 }
2458                 break;
2459         case MLX4_MODULE_ID_QSFP28:
2460                 modinfo->type = ETH_MODULE_SFF_8636;
2461                 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2462                 break;
2463         case MLX4_MODULE_ID_SFP:
2464                 modinfo->type = ETH_MODULE_SFF_8472;
2465                 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
2466                 break;
2467         default:
2468                 en_err(priv, "mlx4_en_get_module_info :  Not recognized cable type\n");
2469                 return -EINVAL;
2470         }
2471
2472         return 0;
2473 }
2474
2475 static int mlx4_en_get_module_eeprom(struct net_device *dev,
2476                                      struct ethtool_eeprom *ee,
2477                                      u8 *data)
2478 {
2479         struct mlx4_en_priv *priv = netdev_priv(dev);
2480         struct mlx4_en_dev *mdev = priv->mdev;
2481         int offset = ee->offset;
2482         int i = 0, ret;
2483
2484         if (ee->len == 0)
2485                 return -EINVAL;
2486
2487         memset(data, 0, ee->len);
2488
2489         while (i < ee->len) {
2490                 en_dbg(DRV, priv,
2491                        "mlx4_get_module_info i(%d) offset(%d) len(%d)\n",
2492                        i, offset, ee->len - i);
2493
2494                 ret = mlx4_get_module_info(mdev->dev, priv->port,
2495                                            offset, ee->len - i, data + i);
2496
2497                 if (!ret) /* Done reading */
2498                         return 0;
2499
2500                 if (ret < 0) {
2501                         en_err(priv,
2502                                "mlx4_get_module_info i(%d) offset(%d) bytes_to_read(%d) - FAILED (0x%x)\n",
2503                                i, offset, ee->len - i, ret);
2504                         return -1;
2505                 }
2506
2507                 i += ret;
2508                 offset += ret;
2509         }
2510         return 0;
2511 }
2512
2513 static void mlx4_en_print_eeprom(u8 *data, __u32 len)
2514 {
2515         int             i;
2516         int             j = 0;
2517         int             row = 0;
2518         const int       NUM_OF_BYTES = 16;
2519
2520         printf("\nOffset\t\tValues\n");
2521         printf("------\t\t------\n");
2522         while(row < len){
2523                 printf("0x%04x\t\t",row);
2524                 for(i=0; i < NUM_OF_BYTES; i++){
2525                         printf("%02x ", data[j]);
2526                         row++;
2527                         j++;
2528                 }
2529                 printf("\n");
2530         }
2531 }
2532
2533 /* Read cable EEPROM module information by first inspecting the first
2534  * two bytes to get the length and then read the rest of the information.
2535  * The information is printed to dmesg. */
2536 static int mlx4_en_read_eeprom(SYSCTL_HANDLER_ARGS)
2537 {
2538
2539         u8*             data;
2540         int             error;
2541         int             result = 0;
2542         struct          mlx4_en_priv *priv;
2543         struct          net_device *dev;
2544         struct          ethtool_modinfo modinfo;
2545         struct          ethtool_eeprom ee;
2546
2547         error = sysctl_handle_int(oidp, &result, 0, req);
2548         if (error || !req->newptr)
2549                 return (error);
2550
2551         if (result == 1) {
2552                 priv = arg1;
2553                 dev = priv->dev;
2554                 data = kmalloc(PAGE_SIZE, GFP_KERNEL);
2555
2556                 error = mlx4_en_get_module_info(dev, &modinfo);
2557                 if (error) {
2558                         en_err(priv,
2559                                "mlx4_en_get_module_info returned with error - FAILED (0x%x)\n",
2560                                -error);
2561                         goto out;
2562                 }
2563
2564                 ee.len = modinfo.eeprom_len;
2565                 ee.offset = 0;
2566
2567                 error = mlx4_en_get_module_eeprom(dev, &ee, data);
2568                 if (error) {
2569                         en_err(priv,
2570                                "mlx4_en_get_module_eeprom returned with error - FAILED (0x%x)\n",
2571                                -error);
2572                         /* Continue printing partial information in case of an error */
2573                 }
2574
2575                 /* EEPROM information will be printed in dmesg */
2576                 mlx4_en_print_eeprom(data, ee.len);
2577 out:
2578                 kfree(data);
2579         }
2580         /* Return zero to prevent sysctl failure. */
2581         return (0);
2582 }
2583
2584 static int mlx4_en_set_tx_ppp(SYSCTL_HANDLER_ARGS)
2585 {
2586         struct mlx4_en_priv *priv;
2587         int ppp;
2588         int error;
2589
2590         priv = arg1;
2591         ppp = priv->prof->tx_ppp;
2592         error = sysctl_handle_int(oidp, &ppp, 0, req);
2593         if (error || !req->newptr)
2594                 return (error);
2595         if (ppp > 0xff || ppp < 0)
2596                 return (-EINVAL);
2597         priv->prof->tx_ppp = ppp;
2598         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2599                                        priv->rx_mb_size + ETHER_CRC_LEN,
2600                                        priv->prof->tx_pause,
2601                                        priv->prof->tx_ppp,
2602                                        priv->prof->rx_pause,
2603                                        priv->prof->rx_ppp);
2604
2605         return (error);
2606 }
2607
2608 static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS)
2609 {
2610         struct mlx4_en_priv *priv;
2611         struct mlx4_en_dev *mdev;
2612         int ppp;
2613         int error;
2614         int port_up;
2615
2616         port_up = 0;
2617         priv = arg1;
2618         mdev = priv->mdev;
2619         ppp = priv->prof->rx_ppp;
2620         error = sysctl_handle_int(oidp, &ppp, 0, req);
2621         if (error || !req->newptr)
2622                 return (error);
2623         if (ppp > 0xff || ppp < 0)
2624                 return (-EINVAL);
2625         /* See if we have to change the number of tx queues. */
2626         if (!ppp != !priv->prof->rx_ppp) {
2627                 mutex_lock(&mdev->state_lock);
2628                 if (priv->port_up) {
2629                         port_up = 1;
2630                         mlx4_en_stop_port(priv->dev);
2631                 }
2632                 mlx4_en_free_resources(priv);
2633                 priv->prof->rx_ppp = ppp;
2634                 error = -mlx4_en_alloc_resources(priv);
2635                 if (error)
2636                         en_err(priv, "Failed reallocating port resources\n");
2637                 if (error == 0 && port_up) {
2638                         error = -mlx4_en_start_port(priv->dev);
2639                         if (error)
2640                                 en_err(priv, "Failed starting port\n");
2641                 }
2642                 mutex_unlock(&mdev->state_lock);
2643                 return (error);
2644
2645         }
2646         priv->prof->rx_ppp = ppp;
2647         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2648                                        priv->rx_mb_size + ETHER_CRC_LEN,
2649                                        priv->prof->tx_pause,
2650                                        priv->prof->tx_ppp,
2651                                        priv->prof->rx_pause,
2652                                        priv->prof->rx_ppp);
2653
2654         return (error);
2655 }
2656
2657 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv)
2658 {
2659         struct net_device *dev;
2660         struct sysctl_ctx_list *ctx;
2661         struct sysctl_oid *node;
2662         struct sysctl_oid_list *node_list;
2663         struct sysctl_oid *coal;
2664         struct sysctl_oid_list *coal_list;
2665         const char *pnameunit;
2666         dev = priv->dev;
2667         ctx = &priv->conf_ctx;
2668         pnameunit = device_get_nameunit(priv->mdev->pdev->dev.bsddev);
2669
2670         sysctl_ctx_init(ctx);
2671         priv->conf_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
2672             OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet");
2673         node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2674             "conf", CTLFLAG_RD, NULL, "Configuration");
2675         node_list = SYSCTL_CHILDREN(node);
2676
2677         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable",
2678             CTLFLAG_RW, &priv->msg_enable, 0,
2679             "Driver message enable bitfield");
2680         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings",
2681             CTLFLAG_RD, &priv->rx_ring_num, 0,
2682             "Number of receive rings");
2683         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings",
2684             CTLFLAG_RD, &priv->tx_ring_num, 0,
2685             "Number of transmit rings");
2686         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size",
2687             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2688             mlx4_en_set_rx_ring_size, "I", "Receive ring size");
2689         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size",
2690             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2691             mlx4_en_set_tx_ring_size, "I", "Transmit ring size");
2692         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_ppp",
2693             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2694             mlx4_en_set_tx_ppp, "I", "TX Per-priority pause");
2695         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_ppp",
2696             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2697             mlx4_en_set_rx_ppp, "I", "RX Per-priority pause");
2698         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "port_num",
2699             CTLFLAG_RD, &priv->port, 0,
2700             "Port Number");
2701         SYSCTL_ADD_STRING(ctx, node_list, OID_AUTO, "device_name",
2702             CTLFLAG_RD, __DECONST(void *, pnameunit), 0,
2703             "PCI device name");
2704         /* Add coalescer configuration. */
2705         coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO,
2706             "coalesce", CTLFLAG_RD, NULL, "Interrupt coalesce configuration");
2707         coal_list = SYSCTL_CHILDREN(coal);
2708         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low",
2709             CTLFLAG_RW, &priv->pkt_rate_low, 0,
2710             "Packets per-second for minimum delay");
2711         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low",
2712             CTLFLAG_RW, &priv->rx_usecs_low, 0,
2713             "Minimum RX delay in micro-seconds");
2714         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high",
2715             CTLFLAG_RW, &priv->pkt_rate_high, 0,
2716             "Packets per-second for maximum delay");
2717         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high",
2718             CTLFLAG_RW, &priv->rx_usecs_high, 0,
2719             "Maximum RX delay in micro-seconds");
2720         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval",
2721             CTLFLAG_RW, &priv->sample_interval, 0,
2722             "adaptive frequency in units of HZ ticks");
2723         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal",
2724             CTLFLAG_RW, &priv->adaptive_rx_coal, 0,
2725             "Enable adaptive rx coalescing");
2726         /* EEPROM support */
2727         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "eeprom_info",
2728             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2729             mlx4_en_read_eeprom, "I", "EEPROM information");
2730 }
2731
2732 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv)
2733 {
2734         struct sysctl_ctx_list *ctx;
2735         struct sysctl_oid_list *node_list;
2736         struct sysctl_oid *ring_node;
2737         struct sysctl_oid_list *ring_list;
2738         struct mlx4_en_tx_ring *tx_ring;
2739         struct mlx4_en_rx_ring *rx_ring;
2740         char namebuf[128];
2741         int i;
2742
2743         ctx = &priv->stat_ctx;
2744         sysctl_ctx_init(ctx);
2745         priv->stat_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2746             "stat", CTLFLAG_RD, NULL, "Statistics");
2747         node_list = SYSCTL_CHILDREN(priv->stat_sysctl);
2748
2749 #ifdef MLX4_EN_PERF_STAT
2750         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD,
2751             &priv->pstats.tx_poll, "TX Poll calls");
2752         SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD,
2753             &priv->pstats.tx_pktsz_avg, "TX average packet size");
2754         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD,
2755             &priv->pstats.inflight_avg, "TX average packets in-flight");
2756         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD,
2757             &priv->pstats.tx_coal_avg, "TX average coalesced completions");
2758         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD,
2759             &priv->pstats.rx_coal_avg, "RX average coalesced completions");
2760 #endif
2761
2762         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD,
2763             &priv->port_stats.tso_packets, 0, "TSO packets sent");
2764         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD,
2765             &priv->port_stats.queue_stopped, 0, "Queue full");
2766         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD,
2767             &priv->port_stats.wake_queue, 0, "Queue resumed after full");
2768         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD,
2769             &priv->port_stats.tx_timeout, 0, "Transmit timeouts");
2770         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_oversized_packets", CTLFLAG_RD,
2771             &priv->port_stats.oversized_packets, 0, "TX oversized packets, m_defrag failed");
2772         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD,
2773             &priv->port_stats.rx_alloc_failed, 0, "RX failed to allocate mbuf");
2774         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD,
2775             &priv->port_stats.rx_chksum_good, 0, "RX checksum offload success");
2776         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD,
2777             &priv->port_stats.rx_chksum_none, 0, "RX without checksum offload");
2778         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_chksum_offload",
2779             CTLFLAG_RD, &priv->port_stats.tx_chksum_offload, 0,
2780             "TX checksum offloads");
2781         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "defrag_attempts",
2782             CTLFLAG_RD, &priv->port_stats.defrag_attempts, 0,
2783             "Oversized chains defragged");
2784
2785         /* Could strdup the names and add in a loop.  This is simpler. */
2786         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_bytes", CTLFLAG_RD,
2787             &priv->pkstats.rx_bytes, 0, "RX Bytes");
2788         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_packets", CTLFLAG_RD,
2789             &priv->pkstats.rx_packets, 0, "RX packets");
2790         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_multicast_packets", CTLFLAG_RD,
2791             &priv->pkstats.rx_multicast_packets, 0, "RX Multicast Packets");
2792         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_broadcast_packets", CTLFLAG_RD,
2793             &priv->pkstats.rx_broadcast_packets, 0, "RX Broadcast Packets");
2794         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_errors", CTLFLAG_RD,
2795             &priv->pkstats.rx_errors, 0, "RX Errors");
2796         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_dropped", CTLFLAG_RD,
2797             &priv->pkstats.rx_dropped, 0, "RX Dropped");
2798         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_length_errors", CTLFLAG_RD,
2799             &priv->pkstats.rx_length_errors, 0, "RX Length Errors");
2800         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_over_errors", CTLFLAG_RD,
2801             &priv->pkstats.rx_over_errors, 0, "RX Over Errors");
2802         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_crc_errors", CTLFLAG_RD,
2803             &priv->pkstats.rx_crc_errors, 0, "RX CRC Errors");
2804         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_jabbers", CTLFLAG_RD,
2805             &priv->pkstats.rx_jabbers, 0, "RX Jabbers");
2806
2807         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_in_range_length_error", CTLFLAG_RD,
2808             &priv->pkstats.rx_in_range_length_error, 0, "RX IN_Range Length Error");
2809         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_out_range_length_error",
2810             CTLFLAG_RD, &priv->pkstats.rx_out_range_length_error, 0,
2811             "RX Out Range Length Error");
2812         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_lt_64_bytes_packets", CTLFLAG_RD,
2813             &priv->pkstats.rx_lt_64_bytes_packets, 0, "RX Lt 64 Bytes Packets");
2814         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_127_bytes_packets", CTLFLAG_RD,
2815             &priv->pkstats.rx_127_bytes_packets, 0, "RX 127 bytes Packets");
2816         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_255_bytes_packets", CTLFLAG_RD,
2817             &priv->pkstats.rx_255_bytes_packets, 0, "RX 255 bytes Packets");
2818         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_511_bytes_packets", CTLFLAG_RD,
2819             &priv->pkstats.rx_511_bytes_packets, 0, "RX 511 bytes Packets");
2820         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1023_bytes_packets", CTLFLAG_RD,
2821             &priv->pkstats.rx_1023_bytes_packets, 0, "RX 1023 bytes Packets");
2822         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1518_bytes_packets", CTLFLAG_RD,
2823             &priv->pkstats.rx_1518_bytes_packets, 0, "RX 1518 bytes Packets");
2824         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1522_bytes_packets", CTLFLAG_RD,
2825             &priv->pkstats.rx_1522_bytes_packets, 0, "RX 1522 bytes Packets");
2826         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1548_bytes_packets", CTLFLAG_RD,
2827             &priv->pkstats.rx_1548_bytes_packets, 0, "RX 1548 bytes Packets");
2828         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_gt_1548_bytes_packets", CTLFLAG_RD,
2829             &priv->pkstats.rx_gt_1548_bytes_packets, 0,
2830             "RX Greater Then 1548 bytes Packets");
2831
2832         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_packets", CTLFLAG_RD,
2833             &priv->pkstats.tx_packets, 0, "TX packets");
2834         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_bytes", CTLFLAG_RD,
2835             &priv->pkstats.tx_bytes, 0, "TX Bytes");
2836         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_multicast_packets", CTLFLAG_RD,
2837             &priv->pkstats.tx_multicast_packets, 0, "TX Multicast Packets");
2838         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_broadcast_packets", CTLFLAG_RD,
2839             &priv->pkstats.tx_broadcast_packets, 0, "TX Broadcast Packets");
2840         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_errors", CTLFLAG_RD,
2841             &priv->pkstats.tx_errors, 0, "TX Errors");
2842         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_dropped", CTLFLAG_RD,
2843             &priv->pkstats.tx_dropped, 0, "TX Dropped");
2844         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_lt_64_bytes_packets", CTLFLAG_RD,
2845             &priv->pkstats.tx_lt_64_bytes_packets, 0, "TX Less Then 64 Bytes Packets");
2846         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_127_bytes_packets", CTLFLAG_RD,
2847             &priv->pkstats.tx_127_bytes_packets, 0, "TX 127 Bytes Packets");
2848         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_255_bytes_packets", CTLFLAG_RD,
2849             &priv->pkstats.tx_255_bytes_packets, 0, "TX 255 Bytes Packets");
2850         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_511_bytes_packets", CTLFLAG_RD,
2851             &priv->pkstats.tx_511_bytes_packets, 0, "TX 511 Bytes Packets");
2852         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1023_bytes_packets", CTLFLAG_RD,
2853             &priv->pkstats.tx_1023_bytes_packets, 0, "TX 1023 Bytes Packets");
2854         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1518_bytes_packets", CTLFLAG_RD,
2855             &priv->pkstats.tx_1518_bytes_packets, 0, "TX 1518 Bytes Packets");
2856         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1522_bytes_packets", CTLFLAG_RD,
2857             &priv->pkstats.tx_1522_bytes_packets, 0, "TX 1522 Bytes Packets");
2858         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1548_bytes_packets", CTLFLAG_RD,
2859             &priv->pkstats.tx_1548_bytes_packets, 0, "TX 1548 Bytes Packets");
2860         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_gt_1548_bytes_packets", CTLFLAG_RD,
2861             &priv->pkstats.tx_gt_1548_bytes_packets, 0,
2862             "TX Greater Then 1548 Bytes Packets");
2863
2864         for (i = 0; i < priv->tx_ring_num; i++) {
2865                 tx_ring = priv->tx_ring[i];
2866                 snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i);
2867                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2868                     CTLFLAG_RD, NULL, "TX Ring");
2869                 ring_list = SYSCTL_CHILDREN(ring_node);
2870                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "packets",
2871                     CTLFLAG_RD, &tx_ring->packets, 0, "TX packets");
2872                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "bytes",
2873                     CTLFLAG_RD, &tx_ring->bytes, 0, "TX bytes");
2874                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "tso_packets",
2875                     CTLFLAG_RD, &tx_ring->tso_packets, 0, "TSO packets");
2876                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "defrag_attempts",
2877                     CTLFLAG_RD, &tx_ring->defrag_attempts, 0,
2878                     "Oversized chains defragged");
2879         }
2880
2881         for (i = 0; i < priv->rx_ring_num; i++) {
2882                 rx_ring = priv->rx_ring[i];
2883                 snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i);
2884                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2885                     CTLFLAG_RD, NULL, "RX Ring");
2886                 ring_list = SYSCTL_CHILDREN(ring_node);
2887                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "packets",
2888                     CTLFLAG_RD, &rx_ring->packets, 0, "RX packets");
2889                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "bytes",
2890                     CTLFLAG_RD, &rx_ring->bytes, 0, "RX bytes");
2891                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "error",
2892                     CTLFLAG_RD, &rx_ring->errors, 0, "RX soft errors");
2893         }
2894 }
2895
2896 #ifdef NETDUMP
2897 static void
2898 mlx4_en_netdump_init(struct ifnet *dev, int *nrxr, int *ncl, int *clsize)
2899 {
2900         struct mlx4_en_priv *priv;
2901
2902         priv = if_getsoftc(dev);
2903         mutex_lock(&priv->mdev->state_lock);
2904         *nrxr = priv->rx_ring_num;
2905         *ncl = NETDUMP_MAX_IN_FLIGHT;
2906         *clsize = priv->rx_mb_size;
2907         mutex_unlock(&priv->mdev->state_lock);
2908 }
2909
2910 static void
2911 mlx4_en_netdump_event(struct ifnet *dev, enum netdump_ev event)
2912 {
2913 }
2914
2915 static int
2916 mlx4_en_netdump_transmit(struct ifnet *dev, struct mbuf *m)
2917 {
2918         struct mlx4_en_priv *priv;
2919         int err;
2920
2921         priv = if_getsoftc(dev);
2922         if ((if_getdrvflags(dev) & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
2923             IFF_DRV_RUNNING || !priv->link_state)
2924                 return (ENOENT);
2925
2926         err = mlx4_en_xmit(priv, 0, &m);
2927         if (err != 0 && m != NULL)
2928                 m_freem(m);
2929         return (err);
2930 }
2931
2932 static int
2933 mlx4_en_netdump_poll(struct ifnet *dev, int count)
2934 {
2935         struct mlx4_en_priv *priv;
2936
2937         priv = if_getsoftc(dev);
2938         if ((if_getdrvflags(dev) & IFF_DRV_RUNNING) == 0 || !priv->link_state)
2939                 return (ENOENT);
2940
2941         mlx4_poll_interrupts(priv->mdev->dev);
2942
2943         return (0);
2944 }
2945 #endif /* NETDUMP */