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 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv);
  57 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv);
  58
  59 #ifdef CONFIG_NET_RX_BUSY_POLL
  60 /* must be called with local_bh_disable()d */
  61 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
  62 {
  63         struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
  64         struct net_device *dev = cq->dev;
  65         struct mlx4_en_priv *priv = netdev_priv(dev);
  66         struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
  67         int done;
  68
  69         if (!priv->port_up)
  70                 return LL_FLUSH_FAILED;
  71
  72         if (!mlx4_en_cq_lock_poll(cq))
  73                 return LL_FLUSH_BUSY;
  74
  75         done = mlx4_en_process_rx_cq(dev, cq, 4);
  76 #ifdef LL_EXTENDED_STATS
  77         if (likely(done))
  78                 rx_ring->cleaned += done;
  79         else
  80                 rx_ring->misses++;
  81 #endif
  82
  83         mlx4_en_cq_unlock_poll(cq);
  84
  85         return done;
  86 }
  87 #endif  /* CONFIG_NET_RX_BUSY_POLL */
  88
  89 #ifdef CONFIG_RFS_ACCEL
  90
  91 struct mlx4_en_filter {
  92         struct list_head next;
  93         struct work_struct work;
  94
  95         u8     ip_proto;
  96         __be32 src_ip;
  97         __be32 dst_ip;
  98         __be16 src_port;
  99         __be16 dst_port;
 100
 101         int rxq_index;
 102         struct mlx4_en_priv *priv;
 103         u32 flow_id;                    /* RFS infrastructure id */
 104         int id;                         /* mlx4_en driver id */
 105         u64 reg_id;                     /* Flow steering API id */
 106         u8 activated;                   /* Used to prevent expiry before filter
 107                                          * is attached
 108                                          */
 109         struct hlist_node filter_chain;
 110 };
 111
 112 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 113
 114 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 115 {
 116         switch (ip_proto) {
 117         case IPPROTO_UDP:
 118                 return MLX4_NET_TRANS_RULE_ID_UDP;
 119         case IPPROTO_TCP:
 120                 return MLX4_NET_TRANS_RULE_ID_TCP;
 121         default:
 122                 return MLX4_NET_TRANS_RULE_NUM;
 123         }
 124 };
 125
 126 static void mlx4_en_filter_work(struct work_struct *work)
 127 {
 128         struct mlx4_en_filter *filter = container_of(work,
 129                                                      struct mlx4_en_filter,
 130                                                      work);
 131         struct mlx4_en_priv *priv = filter->priv;
 132         struct mlx4_spec_list spec_tcp_udp = {
 133                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 134                 {
 135                         .tcp_udp = {
 136                                 .dst_port = filter->dst_port,
 137                                 .dst_port_msk = (__force __be16)-1,
 138                                 .src_port = filter->src_port,
 139                                 .src_port_msk = (__force __be16)-1,
 140                         },
 141                 },
 142         };
 143         struct mlx4_spec_list spec_ip = {
 144                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 145                 {
 146                         .ipv4 = {
 147                                 .dst_ip = filter->dst_ip,
 148                                 .dst_ip_msk = (__force __be32)-1,
 149                                 .src_ip = filter->src_ip,
 150                                 .src_ip_msk = (__force __be32)-1,
 151                         },
 152                 },
 153         };
 154         struct mlx4_spec_list spec_eth = {
 155                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 156         };
 157         struct mlx4_net_trans_rule rule = {
 158                 .list = LIST_HEAD_INIT(rule.list),
 159                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 160                 .exclusive = 1,
 161                 .allow_loopback = 1,
 162                 .promisc_mode = MLX4_FS_REGULAR,
 163                 .port = priv->port,
 164                 .priority = MLX4_DOMAIN_RFS,
 165         };
 166         int rc;
 167         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 168
 169         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 170                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 171                         filter->ip_proto);
 172                 goto ignore;
 173         }
 174         list_add_tail(&spec_eth.list, &rule.list);
 175         list_add_tail(&spec_ip.list, &rule.list);
 176         list_add_tail(&spec_tcp_udp.list, &rule.list);
 177
 178         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 179         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 180         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 181
 182         filter->activated = 0;
 183
 184         if (filter->reg_id) {
 185                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 186                 if (rc && rc != -ENOENT)
 187                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 188         }
 189
 190         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 191         if (rc)
 192                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 193
 194 ignore:
 195         mlx4_en_filter_rfs_expire(priv);
 196
 197         filter->activated = 1;
 198 }
 199
 200 static inline struct hlist_head *
 201 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 202                    __be16 src_port, __be16 dst_port)
 203 {
 204         unsigned long l;
 205         int bucket_idx;
 206
 207         l = (__force unsigned long)src_port |
 208             ((__force unsigned long)dst_port << 2);
 209         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 210
 211         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 212
 213         return &priv->filter_hash[bucket_idx];
 214 }
 215
 216 static struct mlx4_en_filter *
 217 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 218                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 219                      __be16 dst_port, u32 flow_id)
 220 {
 221         struct mlx4_en_filter *filter = NULL;
 222
 223         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 224         if (!filter)
 225                 return NULL;
 226
 227         filter->priv = priv;
 228         filter->rxq_index = rxq_index;
 229         INIT_WORK(&filter->work, mlx4_en_filter_work);
 230
 231         filter->src_ip = src_ip;
 232         filter->dst_ip = dst_ip;
 233         filter->ip_proto = ip_proto;
 234         filter->src_port = src_port;
 235         filter->dst_port = dst_port;
 236
 237         filter->flow_id = flow_id;
 238
 239         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 240
 241         list_add_tail(&filter->next, &priv->filters);
 242         hlist_add_head(&filter->filter_chain,
 243                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 244                                           dst_port));
 245
 246         return filter;
 247 }
 248
 249 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 250 {
 251         struct mlx4_en_priv *priv = filter->priv;
 252         int rc;
 253
 254         list_del(&filter->next);
 255
 256         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 257         if (rc && rc != -ENOENT)
 258                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 259
 260         kfree(filter);
 261 }
 262
 263 static inline struct mlx4_en_filter *
 264 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 265                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 266 {
 267         struct mlx4_en_filter *filter;
 268         struct mlx4_en_filter *ret = NULL;
 269
 270         hlist_for_each_entry(filter,
 271                              filter_hash_bucket(priv, src_ip, dst_ip,
 272                                                 src_port, dst_port),
 273                              filter_chain) {
 274                 if (filter->src_ip == src_ip &&
 275                     filter->dst_ip == dst_ip &&
 276                     filter->ip_proto == ip_proto &&
 277                     filter->src_port == src_port &&
 278                     filter->dst_port == dst_port) {
 279                         ret = filter;
 280                         break;
 281                 }
 282         }
 283
 284         return ret;
 285 }
 286
 287 static int
 288 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 289                    u16 rxq_index, u32 flow_id)
 290 {
 291         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 292         struct mlx4_en_filter *filter;
 293         const struct iphdr *ip;
 294         const __be16 *ports;
 295         u8 ip_proto;
 296         __be32 src_ip;
 297         __be32 dst_ip;
 298         __be16 src_port;
 299         __be16 dst_port;
 300         int nhoff = skb_network_offset(skb);
 301         int ret = 0;
 302
 303         if (skb->protocol != htons(ETH_P_IP))
 304                 return -EPROTONOSUPPORT;
 305
 306         ip = (const struct iphdr *)(skb->data + nhoff);
 307         if (ip_is_fragment(ip))
 308                 return -EPROTONOSUPPORT;
 309
 310         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 311                 return -EPROTONOSUPPORT;
 312         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 313
 314         ip_proto = ip->protocol;
 315         src_ip = ip->saddr;
 316         dst_ip = ip->daddr;
 317         src_port = ports[0];
 318         dst_port = ports[1];
 319
 320         spin_lock_bh(&priv->filters_lock);
 321         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 322                                      src_port, dst_port);
 323         if (filter) {
 324                 if (filter->rxq_index == rxq_index)
 325                         goto out;
 326
 327                 filter->rxq_index = rxq_index;
 328         } else {
 329                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 330                                               src_ip, dst_ip, ip_proto,
 331                                               src_port, dst_port, flow_id);
 332                 if (!filter) {
 333                         ret = -ENOMEM;
 334                         goto err;
 335                 }
 336         }
 337
 338         queue_work(priv->mdev->workqueue, &filter->work);
 339
 340 out:
 341         ret = filter->id;
 342 err:
 343         spin_unlock_bh(&priv->filters_lock);
 344
 345         return ret;
 346 }
 347
 348 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 349 {
 350         struct mlx4_en_filter *filter, *tmp;
 351         LIST_HEAD(del_list);
 352
 353         spin_lock_bh(&priv->filters_lock);
 354         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 355                 list_move(&filter->next, &del_list);
 356                 hlist_del(&filter->filter_chain);
 357         }
 358         spin_unlock_bh(&priv->filters_lock);
 359
 360         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 361                 cancel_work_sync(&filter->work);
 362                 mlx4_en_filter_free(filter);
 363         }
 364 }
 365
 366 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 367 {
 368         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 369         LIST_HEAD(del_list);
 370         int i = 0;
 371
 372         spin_lock_bh(&priv->filters_lock);
 373         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 374                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 375                         break;
 376
 377                 if (filter->activated &&
 378                     !work_pending(&filter->work) &&
 379                     rps_may_expire_flow(priv->dev,
 380                                         filter->rxq_index, filter->flow_id,
 381                                         filter->id)) {
 382                         list_move(&filter->next, &del_list);
 383                         hlist_del(&filter->filter_chain);
 384                 } else
 385                         last_filter = filter;
 386
 387                 i++;
 388         }
 389
 390         if (last_filter && (&last_filter->next != priv->filters.next))
 391                 list_move(&priv->filters, &last_filter->next);
 392
 393         spin_unlock_bh(&priv->filters_lock);
 394
 395         list_for_each_entry_safe(filter, tmp, &del_list, next)
 396                 mlx4_en_filter_free(filter);
 397 }
 398 #endif
 399
 400 static void mlx4_en_vlan_rx_add_vid(void *arg, struct net_device *dev, u16 vid)
 401 {
 402         struct mlx4_en_priv *priv = netdev_priv(dev);
 403         struct mlx4_en_dev *mdev = priv->mdev;
 404         int err;
 405         int idx;
 406
 407         if (arg != priv)
 408                 return;
 409
 410         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 411
 412         set_bit(vid, priv->active_vlans);
 413
 414         /* Add VID to port VLAN filter */
 415         mutex_lock(&mdev->state_lock);
 416         if (mdev->device_up && priv->port_up) {
 417                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 418                 if (err)
 419                         en_err(priv, "Failed configuring VLAN filter\n");
 420         }
 421         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 422                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 423         mutex_unlock(&mdev->state_lock);
 424
 425 }
 426
 427 static void mlx4_en_vlan_rx_kill_vid(void *arg, struct net_device *dev, u16 vid)
 428 {
 429         struct mlx4_en_priv *priv = netdev_priv(dev);
 430         struct mlx4_en_dev *mdev = priv->mdev;
 431         int err;
 432
 433         if (arg != priv)
 434                 return;
 435
 436         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 437
 438         clear_bit(vid, priv->active_vlans);
 439
 440         /* Remove VID from port VLAN filter */
 441         mutex_lock(&mdev->state_lock);
 442         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 443
 444         if (mdev->device_up && priv->port_up) {
 445                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 446                 if (err)
 447                         en_err(priv, "Failed configuring VLAN filter\n");
 448         }
 449         mutex_unlock(&mdev->state_lock);
 450
 451 }
 452
 453 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 454                                     int qpn, u64 *reg_id)
 455 {
 456         int err;
 457
 458         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 459             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 460                 return 0; /* do nothing */
 461
 462         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 463                                     MLX4_DOMAIN_NIC, reg_id);
 464         if (err) {
 465                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 466                 return err;
 467         }
 468         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, (long long)*reg_id);
 469         return 0;
 470 }
 471
 472 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 473                                 unsigned char *mac, int *qpn, u64 *reg_id)
 474 {
 475         struct mlx4_en_dev *mdev = priv->mdev;
 476         struct mlx4_dev *dev = mdev->dev;
 477         int err;
 478
 479         switch (dev->caps.steering_mode) {
 480         case MLX4_STEERING_MODE_B0: {
 481                 struct mlx4_qp qp;
 482                 u8 gid[16] = {0};
 483
 484                 qp.qpn = *qpn;
 485                 memcpy(&gid[10], mac, ETH_ALEN);
 486                 gid[5] = priv->port;
 487
 488                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 489                 break;
 490         }
 491         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 492                 struct mlx4_spec_list spec_eth = { {NULL} };
 493                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 494
 495                 struct mlx4_net_trans_rule rule = {
 496                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 497                         .exclusive = 0,
 498                         .allow_loopback = 1,
 499                         .promisc_mode = MLX4_FS_REGULAR,
 500                         .priority = MLX4_DOMAIN_NIC,
 501                 };
 502
 503                 rule.port = priv->port;
 504                 rule.qpn = *qpn;
 505                 INIT_LIST_HEAD(&rule.list);
 506
 507                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 508                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 509                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 510                 list_add_tail(&spec_eth.list, &rule.list);
 511
 512                 err = mlx4_flow_attach(dev, &rule, reg_id);
 513                 break;
 514         }
 515         default:
 516                 return -EINVAL;
 517         }
 518         if (err)
 519                 en_warn(priv, "Failed Attaching Unicast\n");
 520
 521         return err;
 522 }
 523
 524 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 525                                      unsigned char *mac, int qpn, u64 reg_id)
 526 {
 527         struct mlx4_en_dev *mdev = priv->mdev;
 528         struct mlx4_dev *dev = mdev->dev;
 529
 530         switch (dev->caps.steering_mode) {
 531         case MLX4_STEERING_MODE_B0: {
 532                 struct mlx4_qp qp;
 533                 u8 gid[16] = {0};
 534
 535                 qp.qpn = qpn;
 536                 memcpy(&gid[10], mac, ETH_ALEN);
 537                 gid[5] = priv->port;
 538
 539                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 540                 break;
 541         }
 542         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 543                 mlx4_flow_detach(dev, reg_id);
 544                 break;
 545         }
 546         default:
 547                 en_err(priv, "Invalid steering mode.\n");
 548         }
 549 }
 550
 551 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 552 {
 553         struct mlx4_en_dev *mdev = priv->mdev;
 554         struct mlx4_dev *dev = mdev->dev;
 555         int index = 0;
 556         int err = 0;
 557         int *qpn = &priv->base_qpn;
 558         u64 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 559
 560         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 561                IF_LLADDR(priv->dev));
 562         index = mlx4_register_mac(dev, priv->port, mac);
 563         if (index < 0) {
 564                 err = index;
 565                 en_err(priv, "Failed adding MAC: %pM\n",
 566                        IF_LLADDR(priv->dev));
 567                 return err;
 568         }
 569
 570         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 571                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 572                 *qpn = base_qpn + index;
 573                 return 0;
 574         }
 575
 576         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
 577         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 578         if (err) {
 579                 en_err(priv, "Failed to reserve qp for mac registration\n");
 580                 mlx4_unregister_mac(dev, priv->port, mac);
 581                 return err;
 582         }
 583
 584         return 0;
 585 }
 586
 587 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 588 {
 589         struct mlx4_en_dev *mdev = priv->mdev;
 590         struct mlx4_dev *dev = mdev->dev;
 591         int qpn = priv->base_qpn;
 592
 593         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 594                 u64 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 595                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 596                        IF_LLADDR(priv->dev));
 597                 mlx4_unregister_mac(dev, priv->port, mac);
 598         } else {
 599                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 600                        priv->port, qpn);
 601                 mlx4_qp_release_range(dev, qpn, 1);
 602                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 603         }
 604 }
 605
 606 static void mlx4_en_clear_uclist(struct net_device *dev)
 607 {
 608         struct mlx4_en_priv *priv = netdev_priv(dev);
 609         struct mlx4_en_addr_list *tmp, *uc_to_del;
 610
 611         list_for_each_entry_safe(uc_to_del, tmp, &priv->uc_list, list) {
 612                 list_del(&uc_to_del->list);
 613                 kfree(uc_to_del);
 614         }
 615 }
 616
 617 static void mlx4_en_cache_uclist(struct net_device *dev)
 618 {
 619         struct mlx4_en_priv *priv = netdev_priv(dev);
 620         struct mlx4_en_addr_list *tmp;
 621         struct ifaddr *ifa;
 622
 623         mlx4_en_clear_uclist(dev);
 624
 625         if_addr_rlock(dev);
 626         CK_STAILQ_FOREACH(ifa, &dev->if_addrhead, ifa_link) {
 627                 if (ifa->ifa_addr->sa_family != AF_LINK)
 628                         continue;
 629                 if (((struct sockaddr_dl *)ifa->ifa_addr)->sdl_alen !=
 630                                 ETHER_ADDR_LEN)
 631                         continue;
 632                 tmp = kzalloc(sizeof(struct mlx4_en_addr_list), GFP_ATOMIC);
 633                 if (tmp == NULL) {
 634                         en_err(priv, "Failed to allocate address list\n");
 635                         break;
 636                 }
 637                 memcpy(tmp->addr,
 638                         LLADDR((struct sockaddr_dl *)ifa->ifa_addr), ETH_ALEN);
 639                 list_add_tail(&tmp->list, &priv->uc_list);
 640         }
 641         if_addr_runlock(dev);
 642 }
 643
 644 static void mlx4_en_clear_mclist(struct net_device *dev)
 645 {
 646         struct mlx4_en_priv *priv = netdev_priv(dev);
 647         struct mlx4_en_addr_list *tmp, *mc_to_del;
 648
 649         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 650                 list_del(&mc_to_del->list);
 651                 kfree(mc_to_del);
 652         }
 653 }
 654
 655 static void mlx4_en_cache_mclist(struct net_device *dev)
 656 {
 657         struct mlx4_en_priv *priv = netdev_priv(dev);
 658         struct mlx4_en_addr_list *tmp;
 659         struct ifmultiaddr *ifma;
 660
 661         mlx4_en_clear_mclist(dev);
 662
 663         if_maddr_rlock(dev);
 664         CK_STAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
 665                 if (ifma->ifma_addr->sa_family != AF_LINK)
 666                         continue;
 667                 if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
 668                                 ETHER_ADDR_LEN)
 669                         continue;
 670                 tmp = kzalloc(sizeof(struct mlx4_en_addr_list), GFP_ATOMIC);
 671                 if (tmp == NULL) {
 672                         en_err(priv, "Failed to allocate address list\n");
 673                         break;
 674                 }
 675                 memcpy(tmp->addr,
 676                         LLADDR((struct sockaddr_dl *)ifma->ifma_addr), ETH_ALEN);
 677                 list_add_tail(&tmp->list, &priv->mc_list);
 678         }
 679         if_maddr_runlock(dev);
 680 }
 681
 682 static void update_addr_list_flags(struct mlx4_en_priv *priv,
 683                                 struct list_head *dst,
 684                                 struct list_head *src)
 685 {
 686         struct mlx4_en_addr_list *dst_tmp, *src_tmp, *new_mc;
 687         bool found;
 688
 689         /* Find all the entries that should be removed from dst,
 690          * These are the entries that are not found in src
 691          */
 692         list_for_each_entry(dst_tmp, dst, list) {
 693                 found = false;
 694                 list_for_each_entry(src_tmp, src, list) {
 695                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 696                                 found = true;
 697                                 break;
 698                         }
 699                 }
 700                 if (!found)
 701                         dst_tmp->action = MLX4_ADDR_LIST_REM;
 702         }
 703
 704         /* Add entries that exist in src but not in dst
 705          * mark them as need to add
 706          */
 707         list_for_each_entry(src_tmp, src, list) {
 708                 found = false;
 709                 list_for_each_entry(dst_tmp, dst, list) {
 710                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 711                                 dst_tmp->action = MLX4_ADDR_LIST_NONE;
 712                                 found = true;
 713                                 break;
 714                         }
 715                 }
 716                 if (!found) {
 717                         new_mc = kmalloc(sizeof(struct mlx4_en_addr_list),
 718                                          GFP_KERNEL);
 719                         if (!new_mc) {
 720                                 en_err(priv, "Failed to allocate current multicast list\n");
 721                                 return;
 722                         }
 723                         memcpy(new_mc, src_tmp,
 724                                sizeof(struct mlx4_en_addr_list));
 725                         new_mc->action = MLX4_ADDR_LIST_ADD;
 726                         list_add_tail(&new_mc->list, dst);
 727                 }
 728         }
 729 }
 730
 731 static void mlx4_en_set_rx_mode(struct net_device *dev)
 732 {
 733         struct mlx4_en_priv *priv = netdev_priv(dev);
 734
 735         if (!priv->port_up)
 736                 return;
 737
 738         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 739 }
 740
 741 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 742                                      struct mlx4_en_dev *mdev)
 743 {
 744         int err = 0;
 745
 746         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 747                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 748
 749                 /* Enable promiscouos mode */
 750                 switch (mdev->dev->caps.steering_mode) {
 751                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 752                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 753                                                           priv->port,
 754                                                           priv->base_qpn,
 755                                                           MLX4_FS_ALL_DEFAULT);
 756                         if (err)
 757                                 en_err(priv, "Failed enabling promiscuous mode\n");
 758                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 759                         break;
 760
 761                 case MLX4_STEERING_MODE_B0:
 762                         err = mlx4_unicast_promisc_add(mdev->dev,
 763                                                        priv->base_qpn,
 764                                                        priv->port);
 765                         if (err)
 766                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 767
 768                         /* Add the default qp number as multicast
 769                          * promisc
 770                          */
 771                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 772                                 err = mlx4_multicast_promisc_add(mdev->dev,
 773                                                                  priv->base_qpn,
 774                                                                  priv->port);
 775                                 if (err)
 776                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 777                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 778                         }
 779                         break;
 780
 781                 case MLX4_STEERING_MODE_A0:
 782                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 783                                                      priv->port,
 784                                                      priv->base_qpn,
 785                                                      1);
 786                         if (err)
 787                                 en_err(priv, "Failed enabling promiscuous mode\n");
 788                         break;
 789                 }
 790
 791                 /* Disable port multicast filter (unconditionally) */
 792                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 793                                           0, MLX4_MCAST_DISABLE);
 794                 if (err)
 795                         en_err(priv, "Failed disabling multicast filter\n");
 796         }
 797 }
 798
 799 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 800                                        struct mlx4_en_dev *mdev)
 801 {
 802         int err = 0;
 803
 804         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 805
 806         /* Disable promiscouos mode */
 807         switch (mdev->dev->caps.steering_mode) {
 808         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 809                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 810                                                      priv->port,
 811                                                      MLX4_FS_ALL_DEFAULT);
 812                 if (err)
 813                         en_err(priv, "Failed disabling promiscuous mode\n");
 814                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 815                 break;
 816
 817         case MLX4_STEERING_MODE_B0:
 818                 err = mlx4_unicast_promisc_remove(mdev->dev,
 819                                                   priv->base_qpn,
 820                                                   priv->port);
 821                 if (err)
 822                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 823                 /* Disable Multicast promisc */
 824                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 825                         err = mlx4_multicast_promisc_remove(mdev->dev,
 826                                                             priv->base_qpn,
 827                                                             priv->port);
 828                         if (err)
 829                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 830                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 831                 }
 832                 break;
 833
 834         case MLX4_STEERING_MODE_A0:
 835                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 836                                              priv->port,
 837                                              priv->base_qpn, 0);
 838                 if (err)
 839                         en_err(priv, "Failed disabling promiscuous mode\n");
 840                 break;
 841         }
 842 }
 843
 844 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 845                                  struct net_device *dev,
 846                                  struct mlx4_en_dev *mdev)
 847 {
 848         struct mlx4_en_addr_list *addr_list, *tmp;
 849         u8 mc_list[16] = {0};
 850         int err = 0;
 851         u64 mcast_addr = 0;
 852
 853
 854         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 855         if (dev->if_flags & IFF_ALLMULTI) {
 856                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 857                                           0, MLX4_MCAST_DISABLE);
 858                 if (err)
 859                         en_err(priv, "Failed disabling multicast filter\n");
 860
 861                 /* Add the default qp number as multicast promisc */
 862                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 863                         switch (mdev->dev->caps.steering_mode) {
 864                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 865                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 866                                                                   priv->port,
 867                                                                   priv->base_qpn,
 868                                                                   MLX4_FS_MC_DEFAULT);
 869                                 break;
 870
 871                         case MLX4_STEERING_MODE_B0:
 872                                 err = mlx4_multicast_promisc_add(mdev->dev,
 873                                                                  priv->base_qpn,
 874                                                                  priv->port);
 875                                 break;
 876
 877                         case MLX4_STEERING_MODE_A0:
 878                                 break;
 879                         }
 880                         if (err)
 881                                 en_err(priv, "Failed entering multicast promisc mode\n");
 882                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 883                 }
 884         } else {
 885                 /* Disable Multicast promisc */
 886                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 887                         switch (mdev->dev->caps.steering_mode) {
 888                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 889                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 890                                                                      priv->port,
 891                                                                      MLX4_FS_MC_DEFAULT);
 892                                 break;
 893
 894                         case MLX4_STEERING_MODE_B0:
 895                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 896                                                                     priv->base_qpn,
 897                                                                     priv->port);
 898                                 break;
 899
 900                         case MLX4_STEERING_MODE_A0:
 901                                 break;
 902                         }
 903                         if (err)
 904                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 905                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 906                 }
 907
 908                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 909                                           0, MLX4_MCAST_DISABLE);
 910                 if (err)
 911                         en_err(priv, "Failed disabling multicast filter\n");
 912
 913                 /* Flush mcast filter and init it with broadcast address */
 914                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 915                                     1, MLX4_MCAST_CONFIG);
 916
 917                 /* Update multicast list - we cache all addresses so they won't
 918                  * change while HW is updated holding the command semaphor */
 919                 mlx4_en_cache_mclist(dev);
 920                 list_for_each_entry(addr_list, &priv->mc_list, list) {
 921                         mcast_addr = mlx4_mac_to_u64(addr_list->addr);
 922                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 923                                         mcast_addr, 0, MLX4_MCAST_CONFIG);
 924                 }
 925                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 926                                           0, MLX4_MCAST_ENABLE);
 927                 if (err)
 928                         en_err(priv, "Failed enabling multicast filter\n");
 929
 930                 update_addr_list_flags(priv, &priv->curr_mc_list, &priv->mc_list);
 931
 932                 list_for_each_entry_safe(addr_list, tmp, &priv->curr_mc_list, list) {
 933                         if (addr_list->action == MLX4_ADDR_LIST_REM) {
 934                                 /* detach this address and delete from list */
 935                                 memcpy(&mc_list[10], addr_list->addr, ETH_ALEN);
 936                                 mc_list[5] = priv->port;
 937                                 err = mlx4_multicast_detach(mdev->dev,
 938                                                             &priv->rss_map.indir_qp,
 939                                                             mc_list,
 940                                                             MLX4_PROT_ETH,
 941                                                             addr_list->reg_id);
 942                                 if (err)
 943                                         en_err(priv, "Fail to detach multicast address\n");
 944
 945                                 if (addr_list->tunnel_reg_id) {
 946                                         err = mlx4_flow_detach(priv->mdev->dev, addr_list->tunnel_reg_id);
 947                                         if (err)
 948                                                 en_err(priv, "Failed to detach multicast address\n");
 949                                 }
 950
 951                                 /* remove from list */
 952                                 list_del(&addr_list->list);
 953                                 kfree(addr_list);
 954                         } else if (addr_list->action == MLX4_ADDR_LIST_ADD) {
 955                                 /* attach the address */
 956                                 memcpy(&mc_list[10], addr_list->addr, ETH_ALEN);
 957                                 /* needed for B0 steering support */
 958                                 mc_list[5] = priv->port;
 959                                 err = mlx4_multicast_attach(mdev->dev,
 960                                                             &priv->rss_map.indir_qp,
 961                                                             mc_list,
 962                                                             priv->port, 0,
 963                                                             MLX4_PROT_ETH,
 964                                                             &addr_list->reg_id);
 965                                 if (err)
 966                                         en_err(priv, "Fail to attach multicast address\n");
 967
 968                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
 969                                                                &addr_list->tunnel_reg_id);
 970                                 if (err)
 971                                         en_err(priv, "Failed to attach multicast address\n");
 972                         }
 973                 }
 974         }
 975 }
 976
 977 static void mlx4_en_do_unicast(struct mlx4_en_priv *priv,
 978                                struct net_device *dev,
 979                                struct mlx4_en_dev *mdev)
 980 {
 981         struct mlx4_en_addr_list *addr_list, *tmp;
 982         int err;
 983
 984         /* Update unicast list */
 985         mlx4_en_cache_uclist(dev);
 986
 987         update_addr_list_flags(priv, &priv->curr_uc_list, &priv->uc_list);
 988
 989         list_for_each_entry_safe(addr_list, tmp, &priv->curr_uc_list, list) {
 990                 if (addr_list->action == MLX4_ADDR_LIST_REM) {
 991                         mlx4_en_uc_steer_release(priv, addr_list->addr,
 992                                                  priv->rss_map.indir_qp.qpn,
 993                                                  addr_list->reg_id);
 994                         /* remove from list */
 995                         list_del(&addr_list->list);
 996                         kfree(addr_list);
 997                 } else if (addr_list->action == MLX4_ADDR_LIST_ADD) {
 998                         err = mlx4_en_uc_steer_add(priv, addr_list->addr,
 999                                                    &priv->rss_map.indir_qp.qpn,
1000                                                    &addr_list->reg_id);
1001                         if (err)
1002                                 en_err(priv, "Fail to add unicast address\n");
1003                 }
1004         }
1005 }
1006
1007 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1008 {
1009         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1010                                                  rx_mode_task);
1011         struct mlx4_en_dev *mdev = priv->mdev;
1012         struct net_device *dev = priv->dev;
1013
1014         mutex_lock(&mdev->state_lock);
1015         if (!mdev->device_up) {
1016                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1017                 goto out;
1018         }
1019         if (!priv->port_up) {
1020                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1021                 goto out;
1022         }
1023         if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1024                 if (priv->port_state.link_state) {
1025                         priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1026                         /* update netif baudrate */
1027                         priv->dev->if_baudrate =
1028                             IF_Mbps(priv->port_state.link_speed);
1029                         /* Important note: the following call for if_link_state_change
1030                          * is needed for interface up scenario (start port, link state
1031                          * change) */
1032                         if_link_state_change(priv->dev, LINK_STATE_UP);
1033                         en_dbg(HW, priv, "Link Up\n");
1034                 }
1035         }
1036
1037         /* Set unicast rules */
1038         mlx4_en_do_unicast(priv, dev, mdev);
1039
1040         /* Promsicuous mode: disable all filters */
1041         if ((dev->if_flags & IFF_PROMISC) ||
1042             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1043                 mlx4_en_set_promisc_mode(priv, mdev);
1044         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1045                 /* Not in promiscuous mode */
1046                 mlx4_en_clear_promisc_mode(priv, mdev);
1047         }
1048
1049         /* Set multicast rules */
1050         mlx4_en_do_multicast(priv, dev, mdev);
1051 out:
1052         mutex_unlock(&mdev->state_lock);
1053 }
1054
1055 static void mlx4_en_watchdog_timeout(void *arg)
1056 {
1057         struct mlx4_en_priv *priv = arg;
1058         struct mlx4_en_dev *mdev = priv->mdev;
1059
1060         en_dbg(DRV, priv, "Scheduling watchdog\n");
1061         queue_work(mdev->workqueue, &priv->watchdog_task);
1062         if (priv->port_up)
1063                 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1064                                 mlx4_en_watchdog_timeout, priv);
1065 }
1066
1067
1068
1069 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1070 {
1071         struct mlx4_en_cq *cq;
1072         int i;
1073
1074         /* If we haven't received a specific coalescing setting
1075          * (module param), we set the moderation parameters as follows:
1076          * - moder_cnt is set to the number of mtu sized packets to
1077          *   satisfy our coalescing target.
1078          * - moder_time is set to a fixed value.
1079          */
1080         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1081         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1082         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1083         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1084         en_dbg(INTR, priv, "Default coalesing params for mtu: %u - "
1085                "rx_frames:%d rx_usecs:%d\n",
1086                (unsigned)priv->dev->if_mtu, priv->rx_frames, priv->rx_usecs);
1087
1088         /* Setup cq moderation params */
1089         for (i = 0; i < priv->rx_ring_num; i++) {
1090                 cq = priv->rx_cq[i];
1091                 cq->moder_cnt = priv->rx_frames;
1092                 cq->moder_time = priv->rx_usecs;
1093                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1094                 priv->last_moder_packets[i] = 0;
1095                 priv->last_moder_bytes[i] = 0;
1096         }
1097
1098         for (i = 0; i < priv->tx_ring_num; i++) {
1099                 cq = priv->tx_cq[i];
1100                 cq->moder_cnt = priv->tx_frames;
1101                 cq->moder_time = priv->tx_usecs;
1102         }
1103
1104         /* Reset auto-moderation params */
1105         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1106         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1107         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1108         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1109         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1110         priv->adaptive_rx_coal = 1;
1111         priv->last_moder_jiffies = 0;
1112         priv->last_moder_tx_packets = 0;
1113 }
1114
1115 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1116 {
1117         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1118         struct mlx4_en_cq *cq;
1119         unsigned long packets;
1120         unsigned long rate;
1121         unsigned long avg_pkt_size;
1122         unsigned long rx_packets;
1123         unsigned long rx_bytes;
1124         unsigned long rx_pkt_diff;
1125         int moder_time;
1126         int ring, err;
1127
1128         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1129                 return;
1130
1131         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1132                 spin_lock(&priv->stats_lock);
1133                 rx_packets = priv->rx_ring[ring]->packets;
1134                 rx_bytes = priv->rx_ring[ring]->bytes;
1135                 spin_unlock(&priv->stats_lock);
1136
1137                 rx_pkt_diff = ((unsigned long) (rx_packets -
1138                                 priv->last_moder_packets[ring]));
1139                 packets = rx_pkt_diff;
1140                 rate = packets * HZ / period;
1141                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1142                                 priv->last_moder_bytes[ring])) / packets : 0;
1143
1144                 /* Apply auto-moderation only when packet rate
1145                  * exceeds a rate that it matters */
1146                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1147                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1148                         if (rate < priv->pkt_rate_low)
1149                                 moder_time = priv->rx_usecs_low;
1150                         else if (rate > priv->pkt_rate_high)
1151                                 moder_time = priv->rx_usecs_high;
1152                         else
1153                                 moder_time = (rate - priv->pkt_rate_low) *
1154                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1155                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1156                                         priv->rx_usecs_low;
1157                 } else {
1158                         moder_time = priv->rx_usecs_low;
1159                 }
1160
1161                 if (moder_time != priv->last_moder_time[ring]) {
1162                         priv->last_moder_time[ring] = moder_time;
1163                         cq = priv->rx_cq[ring];
1164                         cq->moder_time = moder_time;
1165                         cq->moder_cnt = priv->rx_frames;
1166                         err = mlx4_en_set_cq_moder(priv, cq);
1167                         if (err)
1168                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1169                                        ring);
1170                 }
1171                 priv->last_moder_packets[ring] = rx_packets;
1172                 priv->last_moder_bytes[ring] = rx_bytes;
1173         }
1174
1175         priv->last_moder_jiffies = jiffies;
1176 }
1177
1178 static void mlx4_en_do_get_stats(struct work_struct *work)
1179 {
1180         struct delayed_work *delay = to_delayed_work(work);
1181         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1182                                                  stats_task);
1183         struct mlx4_en_dev *mdev = priv->mdev;
1184         int err;
1185
1186         mutex_lock(&mdev->state_lock);
1187         if (mdev->device_up) {
1188                 if (priv->port_up) {
1189                         if (mlx4_is_slave(mdev->dev))
1190                                 err = mlx4_en_get_vport_stats(mdev, priv->port);
1191                         else
1192                                 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1193                         if (err)
1194                                 en_dbg(HW, priv, "Could not update stats\n");
1195
1196                         mlx4_en_auto_moderation(priv);
1197                 }
1198
1199                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1200         }
1201         mutex_unlock(&mdev->state_lock);
1202 }
1203
1204 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1205  * periodically
1206  */
1207 static void mlx4_en_service_task(struct work_struct *work)
1208 {
1209         struct delayed_work *delay = to_delayed_work(work);
1210         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1211                                                  service_task);
1212         struct mlx4_en_dev *mdev = priv->mdev;
1213
1214         mutex_lock(&mdev->state_lock);
1215         if (mdev->device_up) {
1216                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1217                                    SERVICE_TASK_DELAY);
1218         }
1219         mutex_unlock(&mdev->state_lock);
1220 }
1221
1222 static void mlx4_en_linkstate(struct work_struct *work)
1223 {
1224         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1225                                                  linkstate_task);
1226         struct mlx4_en_dev *mdev = priv->mdev;
1227         int linkstate = priv->link_state;
1228
1229         mutex_lock(&mdev->state_lock);
1230         /* If observable port state changed set carrier state and
1231          * report to system log */
1232         if (priv->last_link_state != linkstate) {
1233                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1234                         en_info(priv, "Link Down\n");
1235                         if_link_state_change(priv->dev, LINK_STATE_DOWN);
1236                         /* update netif baudrate */
1237                         priv->dev->if_baudrate = 0;
1238
1239                 /* make sure the port is up before notifying the OS.
1240                  * This is tricky since we get here on INIT_PORT and
1241                  * in such case we can't tell the OS the port is up.
1242                  * To solve this there is a call to if_link_state_change
1243                  * in set_rx_mode.
1244                  * */
1245                 } else if (priv->port_up && (linkstate == MLX4_DEV_EVENT_PORT_UP)){
1246                         if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
1247                                 en_info(priv, "Query port failed\n");
1248                         priv->dev->if_baudrate =
1249                             IF_Mbps(priv->port_state.link_speed);
1250                         en_info(priv, "Link Up\n");
1251                         if_link_state_change(priv->dev, LINK_STATE_UP);
1252                 }
1253         }
1254         priv->last_link_state = linkstate;
1255         mutex_unlock(&mdev->state_lock);
1256 }
1257
1258
1259 int mlx4_en_start_port(struct net_device *dev)
1260 {
1261         struct mlx4_en_priv *priv = netdev_priv(dev);
1262         struct mlx4_en_dev *mdev = priv->mdev;
1263         struct mlx4_en_cq *cq;
1264         struct mlx4_en_tx_ring *tx_ring;
1265         int rx_index = 0;
1266         int tx_index = 0;
1267         int err = 0;
1268         int i;
1269         int j;
1270         u8 mc_list[16] = {0};
1271
1272
1273         if (priv->port_up) {
1274                 en_dbg(DRV, priv, "start port called while port already up\n");
1275                 return 0;
1276         }
1277
1278         INIT_LIST_HEAD(&priv->mc_list);
1279         INIT_LIST_HEAD(&priv->uc_list);
1280         INIT_LIST_HEAD(&priv->curr_mc_list);
1281         INIT_LIST_HEAD(&priv->curr_uc_list);
1282         INIT_LIST_HEAD(&priv->ethtool_list);
1283
1284         /* Calculate Rx buf size */
1285         dev->if_mtu = min(dev->if_mtu, priv->max_mtu);
1286         mlx4_en_calc_rx_buf(dev);
1287         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_size);
1288
1289         /* Configure rx cq's and rings */
1290         err = mlx4_en_activate_rx_rings(priv);
1291         if (err) {
1292                 en_err(priv, "Failed to activate RX rings\n");
1293                 return err;
1294         }
1295         for (i = 0; i < priv->rx_ring_num; i++) {
1296                 cq = priv->rx_cq[i];
1297
1298                 mlx4_en_cq_init_lock(cq);
1299                 err = mlx4_en_activate_cq(priv, cq, i);
1300                 if (err) {
1301                         en_err(priv, "Failed activating Rx CQ\n");
1302                         goto cq_err;
1303                 }
1304                 for (j = 0; j < cq->size; j++)
1305                         cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1306                 err = mlx4_en_set_cq_moder(priv, cq);
1307                 if (err) {
1308                         en_err(priv, "Failed setting cq moderation parameters");
1309                         mlx4_en_deactivate_cq(priv, cq);
1310                         goto cq_err;
1311                 }
1312                 mlx4_en_arm_cq(priv, cq);
1313                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1314                 ++rx_index;
1315         }
1316
1317         /* Set qp number */
1318         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1319         err = mlx4_en_get_qp(priv);
1320         if (err) {
1321                 en_err(priv, "Failed getting eth qp\n");
1322                 goto cq_err;
1323         }
1324         mdev->mac_removed[priv->port] = 0;
1325
1326         priv->counter_index =
1327                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1328
1329         err = mlx4_en_config_rss_steer(priv);
1330         if (err) {
1331                 en_err(priv, "Failed configuring rss steering\n");
1332                 goto mac_err;
1333         }
1334
1335         err = mlx4_en_create_drop_qp(priv);
1336         if (err)
1337                 goto rss_err;
1338
1339         /* Configure tx cq's and rings */
1340         for (i = 0; i < priv->tx_ring_num; i++) {
1341                 /* Configure cq */
1342                 cq = priv->tx_cq[i];
1343                 err = mlx4_en_activate_cq(priv, cq, i);
1344                 if (err) {
1345                         en_err(priv, "Failed activating Tx CQ\n");
1346                         goto tx_err;
1347                 }
1348                 err = mlx4_en_set_cq_moder(priv, cq);
1349                 if (err) {
1350                         en_err(priv, "Failed setting cq moderation parameters");
1351                         mlx4_en_deactivate_cq(priv, cq);
1352                         goto tx_err;
1353                 }
1354                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1355                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1356
1357                 /* Configure ring */
1358                 tx_ring = priv->tx_ring[i];
1359
1360                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1361                                                i / priv->num_tx_rings_p_up);
1362                 if (err) {
1363                         en_err(priv, "Failed activating Tx ring %d\n", i);
1364                         mlx4_en_deactivate_cq(priv, cq);
1365                         goto tx_err;
1366                 }
1367
1368                 /* Arm CQ for TX completions */
1369                 mlx4_en_arm_cq(priv, cq);
1370
1371                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1372                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1373                         *((u32 *) (tx_ring->buf + j)) = INIT_OWNER_BIT;
1374                 ++tx_index;
1375         }
1376
1377         /* Configure port */
1378         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1379                                     priv->rx_mb_size,
1380                                     priv->prof->tx_pause,
1381                                     priv->prof->tx_ppp,
1382                                     priv->prof->rx_pause,
1383                                     priv->prof->rx_ppp);
1384         if (err) {
1385                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1386                        priv->port, err);
1387                 goto tx_err;
1388         }
1389         /* Set default qp number */
1390         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1391         if (err) {
1392                 en_err(priv, "Failed setting default qp numbers\n");
1393                 goto tx_err;
1394         }
1395
1396         /* Init port */
1397         en_dbg(HW, priv, "Initializing port\n");
1398         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1399         if (err) {
1400                 en_err(priv, "Failed Initializing port\n");
1401                 goto tx_err;
1402         }
1403
1404         /* Attach rx QP to bradcast address */
1405         memset(&mc_list[10], 0xff, ETH_ALEN);
1406         mc_list[5] = priv->port; /* needed for B0 steering support */
1407         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1408                                   priv->port, 0, MLX4_PROT_ETH,
1409                                   &priv->broadcast_id))
1410                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1411
1412         /* Must redo promiscuous mode setup. */
1413         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1414
1415         /* Schedule multicast task to populate multicast list */
1416         queue_work(mdev->workqueue, &priv->rx_mode_task);
1417
1418         priv->port_up = true;
1419
1420         /* Enable the queues. */
1421         dev->if_drv_flags &= ~IFF_DRV_OACTIVE;
1422         dev->if_drv_flags |= IFF_DRV_RUNNING;
1423 #ifdef CONFIG_DEBUG_FS
1424         mlx4_en_create_debug_files(priv);
1425 #endif
1426         callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1427                     mlx4_en_watchdog_timeout, priv);
1428
1429
1430         return 0;
1431
1432 tx_err:
1433         while (tx_index--) {
1434                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1435                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1436         }
1437         mlx4_en_destroy_drop_qp(priv);
1438 rss_err:
1439         mlx4_en_release_rss_steer(priv);
1440 mac_err:
1441         mlx4_en_put_qp(priv);
1442 cq_err:
1443         while (rx_index--)
1444                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1445         for (i = 0; i < priv->rx_ring_num; i++)
1446                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1447
1448         return err; /* need to close devices */
1449 }
1450
1451
1452 void mlx4_en_stop_port(struct net_device *dev)
1453 {
1454         struct mlx4_en_priv *priv = netdev_priv(dev);
1455         struct mlx4_en_dev *mdev = priv->mdev;
1456         struct mlx4_en_addr_list *addr_list, *tmp;
1457         int i;
1458         u8 mc_list[16] = {0};
1459
1460         if (!priv->port_up) {
1461                 en_dbg(DRV, priv, "stop port called while port already down\n");
1462                 return;
1463         }
1464
1465 #ifdef CONFIG_DEBUG_FS
1466         mlx4_en_delete_debug_files(priv);
1467 #endif
1468
1469         /* close port*/
1470         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1471
1472         /* Set port as not active */
1473         priv->port_up = false;
1474         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1475
1476         /* Promsicuous mode */
1477         if (mdev->dev->caps.steering_mode ==
1478             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1479                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1480                                  MLX4_EN_FLAG_MC_PROMISC);
1481                 mlx4_flow_steer_promisc_remove(mdev->dev,
1482                                                priv->port,
1483                                                MLX4_FS_ALL_DEFAULT);
1484                 mlx4_flow_steer_promisc_remove(mdev->dev,
1485                                                priv->port,
1486                                                MLX4_FS_MC_DEFAULT);
1487         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1488                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1489
1490                 /* Disable promiscouos mode */
1491                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1492                                             priv->port);
1493
1494                 /* Disable Multicast promisc */
1495                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1496                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1497                                                       priv->port);
1498                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1499                 }
1500         }
1501
1502         /* Detach All unicasts */
1503         list_for_each_entry(addr_list, &priv->curr_uc_list, list) {
1504                 mlx4_en_uc_steer_release(priv, addr_list->addr,
1505                                          priv->rss_map.indir_qp.qpn,
1506                                          addr_list->reg_id);
1507         }
1508         mlx4_en_clear_uclist(dev);
1509         list_for_each_entry_safe(addr_list, tmp, &priv->curr_uc_list, list) {
1510                 list_del(&addr_list->list);
1511                 kfree(addr_list);
1512         }
1513
1514         /* Detach All multicasts */
1515         memset(&mc_list[10], 0xff, ETH_ALEN);
1516         mc_list[5] = priv->port; /* needed for B0 steering support */
1517         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1518                               MLX4_PROT_ETH, priv->broadcast_id);
1519         list_for_each_entry(addr_list, &priv->curr_mc_list, list) {
1520                 memcpy(&mc_list[10], addr_list->addr, ETH_ALEN);
1521                 mc_list[5] = priv->port;
1522                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1523                                       mc_list, MLX4_PROT_ETH, addr_list->reg_id);
1524         }
1525         mlx4_en_clear_mclist(dev);
1526         list_for_each_entry_safe(addr_list, tmp, &priv->curr_mc_list, list) {
1527                 list_del(&addr_list->list);
1528                 kfree(addr_list);
1529         }
1530
1531         /* Flush multicast filter */
1532         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1533         mlx4_en_destroy_drop_qp(priv);
1534
1535         /* Free TX Rings */
1536         for (i = 0; i < priv->tx_ring_num; i++) {
1537                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1538                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1539         }
1540         msleep(10);
1541
1542         for (i = 0; i < priv->tx_ring_num; i++)
1543                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1544
1545         /* Free RSS qps */
1546         mlx4_en_release_rss_steer(priv);
1547
1548         /* Unregister Mac address for the port */
1549         mlx4_en_put_qp(priv);
1550         mdev->mac_removed[priv->port] = 1;
1551
1552         /* Free RX Rings */
1553         for (i = 0; i < priv->rx_ring_num; i++) {
1554                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1555                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1556                 mlx4_en_deactivate_cq(priv, cq);
1557         }
1558
1559         callout_stop(&priv->watchdog_timer);
1560
1561         dev->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1562 }
1563
1564 static void mlx4_en_restart(struct work_struct *work)
1565 {
1566         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1567                                                  watchdog_task);
1568         struct mlx4_en_dev *mdev = priv->mdev;
1569         struct net_device *dev = priv->dev;
1570         struct mlx4_en_tx_ring *ring;
1571         int i;
1572
1573
1574         if (priv->blocked == 0 || priv->port_up == 0)
1575                 return;
1576         for (i = 0; i < priv->tx_ring_num; i++) {
1577                 ring = priv->tx_ring[i];
1578                 if (ring->blocked &&
1579                                 ring->watchdog_time + MLX4_EN_WATCHDOG_TIMEOUT < ticks)
1580                         goto reset;
1581         }
1582         return;
1583
1584 reset:
1585         priv->port_stats.tx_timeout++;
1586         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1587
1588         mutex_lock(&mdev->state_lock);
1589         if (priv->port_up) {
1590                 mlx4_en_stop_port(dev);
1591                 //for (i = 0; i < priv->tx_ring_num; i++)
1592                 //        netdev_tx_reset_queue(priv->tx_ring[i]->tx_queue);
1593                 if (mlx4_en_start_port(dev))
1594                         en_err(priv, "Failed restarting port %d\n", priv->port);
1595         }
1596         mutex_unlock(&mdev->state_lock);
1597 }
1598
1599 static void mlx4_en_clear_stats(struct net_device *dev)
1600 {
1601         struct mlx4_en_priv *priv = netdev_priv(dev);
1602         struct mlx4_en_dev *mdev = priv->mdev;
1603         int i;
1604
1605         if (!mlx4_is_slave(mdev->dev))
1606                 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1607                         en_dbg(HW, priv, "Failed dumping statistics\n");
1608
1609         memset(&priv->pstats, 0, sizeof(priv->pstats));
1610         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1611         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1612         memset(&priv->vport_stats, 0, sizeof(priv->vport_stats));
1613
1614         for (i = 0; i < priv->tx_ring_num; i++) {
1615                 priv->tx_ring[i]->bytes = 0;
1616                 priv->tx_ring[i]->packets = 0;
1617                 priv->tx_ring[i]->tx_csum = 0;
1618                 priv->tx_ring[i]->oversized_packets = 0;
1619         }
1620         for (i = 0; i < priv->rx_ring_num; i++) {
1621                 priv->rx_ring[i]->bytes = 0;
1622                 priv->rx_ring[i]->packets = 0;
1623                 priv->rx_ring[i]->csum_ok = 0;
1624                 priv->rx_ring[i]->csum_none = 0;
1625         }
1626 }
1627
1628 static void mlx4_en_open(void* arg)
1629 {
1630
1631         struct mlx4_en_priv *priv;
1632         struct mlx4_en_dev *mdev;
1633         struct net_device *dev;
1634         int err = 0;
1635
1636         priv = arg;
1637         mdev = priv->mdev;
1638         dev = priv->dev;
1639
1640
1641         mutex_lock(&mdev->state_lock);
1642
1643         if (!mdev->device_up) {
1644                 en_err(priv, "Cannot open - device down/disabled\n");
1645                 goto out;
1646         }
1647
1648         /* Reset HW statistics and SW counters */
1649         mlx4_en_clear_stats(dev);
1650
1651         err = mlx4_en_start_port(dev);
1652         if (err)
1653                 en_err(priv, "Failed starting port:%d\n", priv->port);
1654
1655 out:
1656         mutex_unlock(&mdev->state_lock);
1657         return;
1658 }
1659
1660 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1661 {
1662         int i;
1663
1664 #ifdef CONFIG_RFS_ACCEL
1665         if (priv->dev->rx_cpu_rmap) {
1666                 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1667                 priv->dev->rx_cpu_rmap = NULL;
1668         }
1669 #endif
1670
1671         for (i = 0; i < priv->tx_ring_num; i++) {
1672                 if (priv->tx_ring && priv->tx_ring[i])
1673                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1674                 if (priv->tx_cq && priv->tx_cq[i])
1675                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1676         }
1677
1678         for (i = 0; i < priv->rx_ring_num; i++) {
1679                 if (priv->rx_ring[i])
1680                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1681                                 priv->prof->rx_ring_size, priv->stride);
1682                 if (priv->rx_cq[i])
1683                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1684         }
1685
1686         if (priv->stat_sysctl != NULL)
1687                 sysctl_ctx_free(&priv->stat_ctx);
1688 }
1689
1690 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1691 {
1692         struct mlx4_en_port_profile *prof = priv->prof;
1693         int i;
1694         int node = 0;
1695
1696         /* Create rx Rings */
1697         for (i = 0; i < priv->rx_ring_num; i++) {
1698                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1699                                       prof->rx_ring_size, i, RX, node))
1700                         goto err;
1701
1702                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1703                                            prof->rx_ring_size, node))
1704                         goto err;
1705         }
1706
1707         /* Create tx Rings */
1708         for (i = 0; i < priv->tx_ring_num; i++) {
1709                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1710                                       prof->tx_ring_size, i, TX, node))
1711                         goto err;
1712
1713                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1714                                            prof->tx_ring_size, TXBB_SIZE, node, i))
1715                         goto err;
1716         }
1717
1718 #ifdef CONFIG_RFS_ACCEL
1719         priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->rx_ring_num);
1720         if (!priv->dev->rx_cpu_rmap)
1721                 goto err;
1722 #endif
1723         /* Re-create stat sysctls in case the number of rings changed. */
1724         mlx4_en_sysctl_stat(priv);
1725         return 0;
1726
1727 err:
1728         en_err(priv, "Failed to allocate NIC resources\n");
1729         for (i = 0; i < priv->rx_ring_num; i++) {
1730                 if (priv->rx_ring[i])
1731                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1732                                                 prof->rx_ring_size,
1733                                                 priv->stride);
1734                 if (priv->rx_cq[i])
1735                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1736         }
1737         for (i = 0; i < priv->tx_ring_num; i++) {
1738                 if (priv->tx_ring[i])
1739                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1740                 if (priv->tx_cq[i])
1741                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1742         }
1743         priv->port_up = false;
1744         return -ENOMEM;
1745 }
1746
1747 struct en_port_attribute {
1748         struct attribute attr;
1749         ssize_t (*show)(struct en_port *, struct en_port_attribute *, char *buf);
1750         ssize_t (*store)(struct en_port *, struct en_port_attribute *, char *buf, size_t count);
1751 };
1752
1753 #define PORT_ATTR_RO(_name) \
1754 struct en_port_attribute en_port_attr_##_name = __ATTR_RO(_name)
1755
1756 #define EN_PORT_ATTR(_name, _mode, _show, _store) \
1757 struct en_port_attribute en_port_attr_##_name = __ATTR(_name, _mode, _show, _store)
1758
1759 void mlx4_en_destroy_netdev(struct net_device *dev)
1760 {
1761         struct mlx4_en_priv *priv = netdev_priv(dev);
1762         struct mlx4_en_dev *mdev = priv->mdev;
1763
1764         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1765
1766         /* don't allow more IOCTLs */
1767         priv->gone = 1;
1768
1769         /* XXX wait a bit to allow IOCTL handlers to complete */
1770         pause("W", hz);
1771
1772         if (priv->vlan_attach != NULL)
1773                 EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach);
1774         if (priv->vlan_detach != NULL)
1775                 EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach);
1776
1777         /* Unregister device - this will close the port if it was up */
1778         if (priv->registered) {
1779                 mutex_lock(&mdev->state_lock);
1780                 ether_ifdetach(dev);
1781                 mutex_unlock(&mdev->state_lock);
1782         }
1783
1784         mutex_lock(&mdev->state_lock);
1785         mlx4_en_stop_port(dev);
1786         mutex_unlock(&mdev->state_lock);
1787
1788         if (priv->allocated)
1789                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1790
1791         cancel_delayed_work(&priv->stats_task);
1792         cancel_delayed_work(&priv->service_task);
1793         /* flush any pending task for this netdev */
1794         flush_workqueue(mdev->workqueue);
1795         callout_drain(&priv->watchdog_timer);
1796
1797         /* Detach the netdev so tasks would not attempt to access it */
1798         mutex_lock(&mdev->state_lock);
1799         mdev->pndev[priv->port] = NULL;
1800         mutex_unlock(&mdev->state_lock);
1801
1802
1803         mlx4_en_free_resources(priv);
1804
1805         /* freeing the sysctl conf cannot be called from within mlx4_en_free_resources */
1806         if (priv->conf_sysctl != NULL)
1807                 sysctl_ctx_free(&priv->conf_ctx);
1808
1809         kfree(priv->tx_ring);
1810         kfree(priv->tx_cq);
1811
1812         kfree(priv);
1813         if_free(dev);
1814
1815 }
1816
1817 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1818 {
1819         struct mlx4_en_priv *priv = netdev_priv(dev);
1820         struct mlx4_en_dev *mdev = priv->mdev;
1821         int err = 0;
1822
1823         en_dbg(DRV, priv, "Change MTU called - current:%u new:%u\n",
1824                (unsigned)dev->if_mtu, (unsigned)new_mtu);
1825
1826         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
1827                 en_err(priv, "Bad MTU size:%d, max %u.\n", new_mtu,
1828                     priv->max_mtu);
1829                 return -EPERM;
1830         }
1831         mutex_lock(&mdev->state_lock);
1832         dev->if_mtu = new_mtu;
1833         if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1834                 if (!mdev->device_up) {
1835                         /* NIC is probably restarting - let watchdog task reset
1836                          *                          * the port */
1837                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
1838                 } else {
1839                         mlx4_en_stop_port(dev);
1840                         err = mlx4_en_start_port(dev);
1841                         if (err) {
1842                                 en_err(priv, "Failed restarting port:%d\n",
1843                                                 priv->port);
1844                                 queue_work(mdev->workqueue, &priv->watchdog_task);
1845                         }
1846                 }
1847         }
1848         mutex_unlock(&mdev->state_lock);
1849         return 0;
1850 }
1851
1852 static int mlx4_en_calc_media(struct mlx4_en_priv *priv)
1853 {
1854         int trans_type;
1855         int active;
1856
1857         active = IFM_ETHER;
1858         if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN)
1859                 return (active);
1860         active |= IFM_FDX;
1861         trans_type = priv->port_state.transceiver;
1862         /* XXX I don't know all of the transceiver values. */
1863         switch (priv->port_state.link_speed) {
1864         case 100:
1865                 active |= IFM_100_T;
1866                 break;
1867         case 1000:
1868                 active |= IFM_1000_T;
1869                 break;
1870         case 10000:
1871                 if (trans_type > 0 && trans_type <= 0xC)
1872                         active |= IFM_10G_SR;
1873                 else if (trans_type == 0x80 || trans_type == 0)
1874                         active |= IFM_10G_CX4;
1875                 break;
1876         case 40000:
1877                 active |= IFM_40G_CR4;
1878                 break;
1879         }
1880         if (priv->prof->tx_pause)
1881                 active |= IFM_ETH_TXPAUSE;
1882         if (priv->prof->rx_pause)
1883                 active |= IFM_ETH_RXPAUSE;
1884
1885         return (active);
1886 }
1887
1888 static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr)
1889 {
1890         struct mlx4_en_priv *priv;
1891
1892         priv = dev->if_softc;
1893         ifmr->ifm_status = IFM_AVALID;
1894         if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN)
1895                 ifmr->ifm_status |= IFM_ACTIVE;
1896         ifmr->ifm_active = mlx4_en_calc_media(priv);
1897
1898         return;
1899 }
1900
1901 static int mlx4_en_media_change(struct ifnet *dev)
1902 {
1903         struct mlx4_en_priv *priv;
1904         struct ifmedia *ifm;
1905         int rxpause;
1906         int txpause;
1907         int error;
1908
1909         priv = dev->if_softc;
1910         ifm = &priv->media;
1911         rxpause = txpause = 0;
1912         error = 0;
1913
1914         if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1915                 return (EINVAL);
1916         switch (IFM_SUBTYPE(ifm->ifm_media)) {
1917         case IFM_AUTO:
1918                 break;
1919         case IFM_10G_SR:
1920         case IFM_10G_CX4:
1921         case IFM_1000_T:
1922         case IFM_40G_CR4:
1923                 if ((IFM_SUBTYPE(ifm->ifm_media)
1924                         == IFM_SUBTYPE(mlx4_en_calc_media(priv)))
1925                         && (ifm->ifm_media & IFM_FDX))
1926                         break;
1927                 /* Fallthrough */
1928         default:
1929                 printf("%s: Only auto media type\n", if_name(dev));
1930                 return (EINVAL);
1931         }
1932         /* Allow user to set/clear pause */
1933         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE)
1934                 rxpause = 1;
1935         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE)
1936                 txpause = 1;
1937         if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) {
1938                 priv->prof->tx_pause = txpause;
1939                 priv->prof->rx_pause = rxpause;
1940                 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1941                      priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause,
1942                      priv->prof->tx_ppp, priv->prof->rx_pause,
1943                      priv->prof->rx_ppp);
1944         }
1945         return (error);
1946 }
1947
1948 static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data)
1949 {
1950         struct mlx4_en_priv *priv;
1951         struct mlx4_en_dev *mdev;
1952         struct ifreq *ifr;
1953         int error;
1954         int mask;
1955         struct ifrsskey *ifrk;
1956         const u32 *key;
1957         struct ifrsshash *ifrh;
1958         u8 rss_mask;
1959
1960         error = 0;
1961         mask = 0;
1962         priv = dev->if_softc;
1963
1964         /* check if detaching */
1965         if (priv == NULL || priv->gone != 0)
1966                 return (ENXIO);
1967
1968         mdev = priv->mdev;
1969         ifr = (struct ifreq *) data;
1970
1971         switch (command) {
1972         case SIOCSIFMTU:
1973                 error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu);
1974                 break;
1975         case SIOCSIFFLAGS:
1976                 if (dev->if_flags & IFF_UP) {
1977                         if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1978                                 mutex_lock(&mdev->state_lock);
1979                                 mlx4_en_start_port(dev);
1980                                 mutex_unlock(&mdev->state_lock);
1981                         } else {
1982                                 mlx4_en_set_rx_mode(dev);
1983                         }
1984                 } else {
1985                         mutex_lock(&mdev->state_lock);
1986                         if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1987                                 mlx4_en_stop_port(dev);
1988                                 if_link_state_change(dev, LINK_STATE_DOWN);
1989                         }
1990                         mutex_unlock(&mdev->state_lock);
1991                 }
1992                 break;
1993         case SIOCADDMULTI:
1994         case SIOCDELMULTI:
1995                 mlx4_en_set_rx_mode(dev);
1996                 break;
1997         case SIOCSIFMEDIA:
1998         case SIOCGIFMEDIA:
1999                 error = ifmedia_ioctl(dev, ifr, &priv->media, command);
2000                 break;
2001         case SIOCSIFCAP:
2002                 mutex_lock(&mdev->state_lock);
2003                 mask = ifr->ifr_reqcap ^ dev->if_capenable;
2004                 if (mask & IFCAP_TXCSUM) {
2005                         dev->if_capenable ^= IFCAP_TXCSUM;
2006                         dev->if_hwassist ^= (CSUM_TCP | CSUM_UDP | CSUM_IP);
2007
2008                         if (IFCAP_TSO4 & dev->if_capenable &&
2009                             !(IFCAP_TXCSUM & dev->if_capenable)) {
2010                                 dev->if_capenable &= ~IFCAP_TSO4;
2011                                 dev->if_hwassist &= ~CSUM_IP_TSO;
2012                                 if_printf(dev,
2013                                     "tso4 disabled due to -txcsum.\n");
2014                         }
2015                 }
2016                 if (mask & IFCAP_TXCSUM_IPV6) {
2017                         dev->if_capenable ^= IFCAP_TXCSUM_IPV6;
2018                         dev->if_hwassist ^= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
2019
2020                         if (IFCAP_TSO6 & dev->if_capenable &&
2021                             !(IFCAP_TXCSUM_IPV6 & dev->if_capenable)) {
2022                                 dev->if_capenable &= ~IFCAP_TSO6;
2023                                 dev->if_hwassist &= ~CSUM_IP6_TSO;
2024                                 if_printf(dev,
2025                                     "tso6 disabled due to -txcsum6.\n");
2026                         }
2027                 }
2028                 if (mask & IFCAP_RXCSUM)
2029                         dev->if_capenable ^= IFCAP_RXCSUM;
2030                 if (mask & IFCAP_RXCSUM_IPV6)
2031                         dev->if_capenable ^= IFCAP_RXCSUM_IPV6;
2032
2033                 if (mask & IFCAP_TSO4) {
2034                         if (!(IFCAP_TSO4 & dev->if_capenable) &&
2035                             !(IFCAP_TXCSUM & dev->if_capenable)) {
2036                                 if_printf(dev, "enable txcsum first.\n");
2037                                 error = EAGAIN;
2038                                 goto out;
2039                         }
2040                         dev->if_capenable ^= IFCAP_TSO4;
2041                         dev->if_hwassist ^= CSUM_IP_TSO;
2042                 }
2043                 if (mask & IFCAP_TSO6) {
2044                         if (!(IFCAP_TSO6 & dev->if_capenable) &&
2045                             !(IFCAP_TXCSUM_IPV6 & dev->if_capenable)) {
2046                                 if_printf(dev, "enable txcsum6 first.\n");
2047                                 error = EAGAIN;
2048                                 goto out;
2049                         }
2050                         dev->if_capenable ^= IFCAP_TSO6;
2051                         dev->if_hwassist ^= CSUM_IP6_TSO;
2052                 }
2053                 if (mask & IFCAP_LRO)
2054                         dev->if_capenable ^= IFCAP_LRO;
2055                 if (mask & IFCAP_VLAN_HWTAGGING)
2056                         dev->if_capenable ^= IFCAP_VLAN_HWTAGGING;
2057                 if (mask & IFCAP_VLAN_HWFILTER)
2058                         dev->if_capenable ^= IFCAP_VLAN_HWFILTER;
2059                 if (mask & IFCAP_WOL_MAGIC)
2060                         dev->if_capenable ^= IFCAP_WOL_MAGIC;
2061                 if (dev->if_drv_flags & IFF_DRV_RUNNING)
2062                         mlx4_en_start_port(dev);
2063 out:
2064                 mutex_unlock(&mdev->state_lock);
2065                 VLAN_CAPABILITIES(dev);
2066                 break;
2067 #if __FreeBSD_version >= 1100036
2068         case SIOCGI2C: {
2069                 struct ifi2creq i2c;
2070
2071                 error = copyin(ifr_data_get_ptr(ifr), &i2c, sizeof(i2c));
2072                 if (error)
2073                         break;
2074                 if (i2c.len > sizeof(i2c.data)) {
2075                         error = EINVAL;
2076                         break;
2077                 }
2078                 /*
2079                  * Note that we ignore i2c.addr here. The driver hardcodes
2080                  * the address to 0x50, while standard expects it to be 0xA0.
2081                  */
2082                 error = mlx4_get_module_info(mdev->dev, priv->port,
2083                     i2c.offset, i2c.len, i2c.data);
2084                 if (error < 0) {
2085                         error = -error;
2086                         break;
2087                 }
2088                 error = copyout(&i2c, ifr_data_get_ptr(ifr), sizeof(i2c));
2089                 break;
2090         }
2091 #endif
2092         case SIOCGIFRSSKEY:
2093                 ifrk = (struct ifrsskey *)data;
2094                 ifrk->ifrk_func = RSS_FUNC_TOEPLITZ;
2095                 mutex_lock(&mdev->state_lock);
2096                 key = mlx4_en_get_rss_key(priv, &ifrk->ifrk_keylen);
2097                 if (ifrk->ifrk_keylen > RSS_KEYLEN)
2098                         error = EINVAL;
2099                 else
2100                         memcpy(ifrk->ifrk_key, key, ifrk->ifrk_keylen);
2101                 mutex_unlock(&mdev->state_lock);
2102                 break;
2103
2104         case SIOCGIFRSSHASH:
2105                 mutex_lock(&mdev->state_lock);
2106                 rss_mask = mlx4_en_get_rss_mask(priv);
2107                 mutex_unlock(&mdev->state_lock);
2108                 ifrh = (struct ifrsshash *)data;
2109                 ifrh->ifrh_func = RSS_FUNC_TOEPLITZ;
2110                 ifrh->ifrh_types = 0;
2111                 if (rss_mask & MLX4_RSS_IPV4)
2112                         ifrh->ifrh_types |= RSS_TYPE_IPV4;
2113                 if (rss_mask & MLX4_RSS_TCP_IPV4)
2114                         ifrh->ifrh_types |= RSS_TYPE_TCP_IPV4;
2115                 if (rss_mask & MLX4_RSS_IPV6)
2116                         ifrh->ifrh_types |= RSS_TYPE_IPV6;
2117                 if (rss_mask & MLX4_RSS_TCP_IPV6)
2118                         ifrh->ifrh_types |= RSS_TYPE_TCP_IPV6;
2119                 if (rss_mask & MLX4_RSS_UDP_IPV4)
2120                         ifrh->ifrh_types |= RSS_TYPE_UDP_IPV4;
2121                 if (rss_mask & MLX4_RSS_UDP_IPV6)
2122                         ifrh->ifrh_types |= RSS_TYPE_UDP_IPV6;
2123                 break;
2124
2125         default:
2126                 error = ether_ioctl(dev, command, data);
2127                 break;
2128         }
2129
2130         return (error);
2131 }
2132
2133
2134 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2135                         struct mlx4_en_port_profile *prof)
2136 {
2137         struct net_device *dev;
2138         struct mlx4_en_priv *priv;
2139         uint8_t dev_addr[ETHER_ADDR_LEN];
2140         int err;
2141         int i;
2142
2143         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2144         dev = priv->dev = if_alloc(IFT_ETHER);
2145         if (dev == NULL) {
2146                 en_err(priv, "Net device allocation failed\n");
2147                 kfree(priv);
2148                 return -ENOMEM;
2149         }
2150         dev->if_softc = priv;
2151         if_initname(dev, "mlxen", (device_get_unit(
2152             mdev->pdev->dev.bsddev) * MLX4_MAX_PORTS) + port - 1);
2153         dev->if_mtu = ETHERMTU;
2154         dev->if_init = mlx4_en_open;
2155         dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
2156         dev->if_ioctl = mlx4_en_ioctl;
2157         dev->if_transmit = mlx4_en_transmit;
2158         dev->if_qflush = mlx4_en_qflush;
2159         dev->if_snd.ifq_maxlen = prof->tx_ring_size;
2160
2161         /*
2162          * Initialize driver private data
2163          */
2164         priv->counter_index = 0xff;
2165         spin_lock_init(&priv->stats_lock);
2166         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2167         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2168         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2169         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2170         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2171         callout_init(&priv->watchdog_timer, 1);
2172 #ifdef CONFIG_RFS_ACCEL
2173         INIT_LIST_HEAD(&priv->filters);
2174         spin_lock_init(&priv->filters_lock);
2175 #endif
2176
2177         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2178         priv->dev = dev;
2179         priv->mdev = mdev;
2180         priv->ddev = &mdev->pdev->dev;
2181         priv->prof = prof;
2182         priv->port = port;
2183         priv->port_up = false;
2184         priv->flags = prof->flags;
2185
2186         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2187         priv->tx_ring_num = prof->tx_ring_num;
2188         priv->tx_ring = kcalloc(MAX_TX_RINGS,
2189                                 sizeof(struct mlx4_en_tx_ring *), GFP_KERNEL);
2190         if (!priv->tx_ring) {
2191                 err = -ENOMEM;
2192                 goto out;
2193         }
2194         priv->tx_cq = kcalloc(sizeof(struct mlx4_en_cq *), MAX_TX_RINGS,
2195                         GFP_KERNEL);
2196         if (!priv->tx_cq) {
2197                 err = -ENOMEM;
2198                 goto out;
2199         }
2200
2201         priv->rx_ring_num = prof->rx_ring_num;
2202         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2203         priv->mac_index = -1;
2204         priv->last_ifq_jiffies = 0;
2205         priv->if_counters_rx_errors = 0;
2206         priv->if_counters_rx_no_buffer = 0;
2207 #ifdef CONFIG_MLX4_EN_DCB
2208         if (!mlx4_is_slave(priv->mdev->dev)) {
2209                 priv->dcbx_cap = DCB_CAP_DCBX_HOST;
2210                 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
2211                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2212                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2213                 } else {
2214                         en_info(priv, "QoS disabled - no HW support\n");
2215                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2216                 }
2217         }
2218 #endif
2219
2220         /* Query for default mac and max mtu */
2221         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2222         priv->mac = mdev->dev->caps.def_mac[priv->port];
2223         if (ILLEGAL_MAC(priv->mac)) {
2224 #if BITS_PER_LONG == 64
2225                 en_err(priv, "Port: %d, invalid mac burned: 0x%lx, quiting\n",
2226                                 priv->port, priv->mac);
2227 #elif BITS_PER_LONG == 32
2228                 en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
2229                                 priv->port, priv->mac);
2230 #endif
2231                 err = -EINVAL;
2232                 goto out;
2233         }
2234
2235         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2236                                           DS_SIZE);
2237
2238         mlx4_en_sysctl_conf(priv);
2239
2240         err = mlx4_en_alloc_resources(priv);
2241         if (err)
2242                 goto out;
2243
2244         /* Allocate page for receive rings */
2245         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2246                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2247         if (err) {
2248                 en_err(priv, "Failed to allocate page for rx qps\n");
2249                 goto out;
2250         }
2251         priv->allocated = 1;
2252
2253         /*
2254          * Set driver features
2255          */
2256         dev->if_capabilities |= IFCAP_HWCSUM | IFCAP_HWCSUM_IPV6;
2257         dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
2258         dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER;
2259         dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU;
2260         dev->if_capabilities |= IFCAP_LRO;
2261         dev->if_capabilities |= IFCAP_HWSTATS;
2262
2263         if (mdev->LSO_support)
2264                 dev->if_capabilities |= IFCAP_TSO4 | IFCAP_TSO6 | IFCAP_VLAN_HWTSO;
2265
2266 #if __FreeBSD_version >= 1100000
2267         /* set TSO limits so that we don't have to drop TX packets */
2268         dev->if_hw_tsomax = MLX4_EN_TX_MAX_PAYLOAD_SIZE - (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN) /* hdr */;
2269         dev->if_hw_tsomaxsegcount = MLX4_EN_TX_MAX_MBUF_FRAGS - 1 /* hdr */;
2270         dev->if_hw_tsomaxsegsize = MLX4_EN_TX_MAX_MBUF_SIZE;
2271 #endif
2272
2273         dev->if_capenable = dev->if_capabilities;
2274
2275         dev->if_hwassist = 0;
2276         if (dev->if_capenable & (IFCAP_TSO4 | IFCAP_TSO6))
2277                 dev->if_hwassist |= CSUM_TSO;
2278         if (dev->if_capenable & IFCAP_TXCSUM)
2279                 dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP);
2280         if (dev->if_capenable & IFCAP_TXCSUM_IPV6)
2281                 dev->if_hwassist |= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
2282
2283
2284         /* Register for VLAN events */
2285         priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
2286             mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST);
2287         priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
2288             mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST);
2289
2290         mdev->pndev[priv->port] = dev;
2291
2292         priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN;
2293         mlx4_en_set_default_moderation(priv);
2294
2295         /* Set default MAC */
2296         for (i = 0; i < ETHER_ADDR_LEN; i++)
2297                 dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i));
2298
2299
2300         ether_ifattach(dev, dev_addr);
2301         if_link_state_change(dev, LINK_STATE_DOWN);
2302         ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK,
2303             mlx4_en_media_change, mlx4_en_media_status);
2304         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL);
2305         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL);
2306         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL);
2307         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_40G_CR4, 0, NULL);
2308         ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
2309         ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
2310
2311         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2312         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2313
2314         priv->registered = 1;
2315
2316         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2317         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2318
2319
2320         priv->rx_mb_size = dev->if_mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
2321         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2322                                     priv->rx_mb_size,
2323                                     prof->tx_pause, prof->tx_ppp,
2324                                     prof->rx_pause, prof->rx_ppp);
2325         if (err) {
2326                 en_err(priv, "Failed setting port general configurations "
2327                        "for port %d, with error %d\n", priv->port, err);
2328                 goto out;
2329         }
2330
2331         /* Init port */
2332         en_warn(priv, "Initializing port\n");
2333         err = mlx4_INIT_PORT(mdev->dev, priv->port);
2334         if (err) {
2335                 en_err(priv, "Failed Initializing port\n");
2336                 goto out;
2337         }
2338
2339         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2340
2341         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2342                 queue_delayed_work(mdev->workqueue, &priv->service_task, SERVICE_TASK_DELAY);
2343
2344         return 0;
2345
2346 out:
2347         mlx4_en_destroy_netdev(dev);
2348         return err;
2349 }
2350
2351 static int mlx4_en_set_ring_size(struct net_device *dev,
2352     int rx_size, int tx_size)
2353 {
2354         struct mlx4_en_priv *priv = netdev_priv(dev);
2355         struct mlx4_en_dev *mdev = priv->mdev;
2356         int port_up = 0;
2357         int err = 0;
2358
2359         rx_size = roundup_pow_of_two(rx_size);
2360         rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
2361         rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
2362         tx_size = roundup_pow_of_two(tx_size);
2363         tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
2364         tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
2365
2366         if (rx_size == (priv->port_up ?
2367             priv->rx_ring[0]->actual_size : priv->rx_ring[0]->size) &&
2368             tx_size == priv->tx_ring[0]->size)
2369                 return 0;
2370         mutex_lock(&mdev->state_lock);
2371         if (priv->port_up) {
2372                 port_up = 1;
2373                 mlx4_en_stop_port(dev);
2374         }
2375         mlx4_en_free_resources(priv);
2376         priv->prof->tx_ring_size = tx_size;
2377         priv->prof->rx_ring_size = rx_size;
2378         err = mlx4_en_alloc_resources(priv);
2379         if (err) {
2380                 en_err(priv, "Failed reallocating port resources\n");
2381                 goto out;
2382         }
2383         if (port_up) {
2384                 err = mlx4_en_start_port(dev);
2385                 if (err)
2386                         en_err(priv, "Failed starting port\n");
2387         }
2388 out:
2389         mutex_unlock(&mdev->state_lock);
2390         return err;
2391 }
2392 static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS)
2393 {
2394         struct mlx4_en_priv *priv;
2395         int size;
2396         int error;
2397
2398         priv = arg1;
2399         size = priv->prof->rx_ring_size;
2400         error = sysctl_handle_int(oidp, &size, 0, req);
2401         if (error || !req->newptr)
2402                 return (error);
2403         error = -mlx4_en_set_ring_size(priv->dev, size,
2404             priv->prof->tx_ring_size);
2405         return (error);
2406 }
2407
2408 static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS)
2409 {
2410         struct mlx4_en_priv *priv;
2411         int size;
2412         int error;
2413
2414         priv = arg1;
2415         size = priv->prof->tx_ring_size;
2416         error = sysctl_handle_int(oidp, &size, 0, req);
2417         if (error || !req->newptr)
2418                 return (error);
2419         error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size,
2420             size);
2421
2422         return (error);
2423 }
2424
2425 static int mlx4_en_get_module_info(struct net_device *dev,
2426                                    struct ethtool_modinfo *modinfo)
2427 {
2428         struct mlx4_en_priv *priv = netdev_priv(dev);
2429         struct mlx4_en_dev *mdev = priv->mdev;
2430         int ret;
2431         u8 data[4];
2432
2433         /* Read first 2 bytes to get Module & REV ID */
2434         ret = mlx4_get_module_info(mdev->dev, priv->port,
2435                                    0/*offset*/, 2/*size*/, data);
2436
2437         if (ret < 2) {
2438                 en_err(priv, "Failed to read eeprom module first two bytes, error: 0x%x\n", -ret);
2439                 return -EIO;
2440         }
2441
2442         switch (data[0] /* identifier */) {
2443         case MLX4_MODULE_ID_QSFP:
2444                 modinfo->type = ETH_MODULE_SFF_8436;
2445                 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2446                 break;
2447         case MLX4_MODULE_ID_QSFP_PLUS:
2448                 if (data[1] >= 0x3) { /* revision id */
2449                         modinfo->type = ETH_MODULE_SFF_8636;
2450                         modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2451                 } else {
2452                         modinfo->type = ETH_MODULE_SFF_8436;
2453                         modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2454                 }
2455                 break;
2456         case MLX4_MODULE_ID_QSFP28:
2457                 modinfo->type = ETH_MODULE_SFF_8636;
2458                 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2459                 break;
2460         case MLX4_MODULE_ID_SFP:
2461                 modinfo->type = ETH_MODULE_SFF_8472;
2462                 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
2463                 break;
2464         default:
2465                 en_err(priv, "mlx4_en_get_module_info :  Not recognized cable type\n");
2466                 return -EINVAL;
2467         }
2468
2469         return 0;
2470 }
2471
2472 static int mlx4_en_get_module_eeprom(struct net_device *dev,
2473                                      struct ethtool_eeprom *ee,
2474                                      u8 *data)
2475 {
2476         struct mlx4_en_priv *priv = netdev_priv(dev);
2477         struct mlx4_en_dev *mdev = priv->mdev;
2478         int offset = ee->offset;
2479         int i = 0, ret;
2480
2481         if (ee->len == 0)
2482                 return -EINVAL;
2483
2484         memset(data, 0, ee->len);
2485
2486         while (i < ee->len) {
2487                 en_dbg(DRV, priv,
2488                        "mlx4_get_module_info i(%d) offset(%d) len(%d)\n",
2489                        i, offset, ee->len - i);
2490
2491                 ret = mlx4_get_module_info(mdev->dev, priv->port,
2492                                            offset, ee->len - i, data + i);
2493
2494                 if (!ret) /* Done reading */
2495                         return 0;
2496
2497                 if (ret < 0) {
2498                         en_err(priv,
2499                                "mlx4_get_module_info i(%d) offset(%d) bytes_to_read(%d) - FAILED (0x%x)\n",
2500                                i, offset, ee->len - i, ret);
2501                         return -1;
2502                 }
2503
2504                 i += ret;
2505                 offset += ret;
2506         }
2507         return 0;
2508 }
2509
2510 static void mlx4_en_print_eeprom(u8 *data, __u32 len)
2511 {
2512         int             i;
2513         int             j = 0;
2514         int             row = 0;
2515         const int       NUM_OF_BYTES = 16;
2516
2517         printf("\nOffset\t\tValues\n");
2518         printf("------\t\t------\n");
2519         while(row < len){
2520                 printf("0x%04x\t\t",row);
2521                 for(i=0; i < NUM_OF_BYTES; i++){
2522                         printf("%02x ", data[j]);
2523                         row++;
2524                         j++;
2525                 }
2526                 printf("\n");
2527         }
2528 }
2529
2530 /* Read cable EEPROM module information by first inspecting the first
2531  * two bytes to get the length and then read the rest of the information.
2532  * The information is printed to dmesg. */
2533 static int mlx4_en_read_eeprom(SYSCTL_HANDLER_ARGS)
2534 {
2535
2536         u8*             data;
2537         int             error;
2538         int             result = 0;
2539         struct          mlx4_en_priv *priv;
2540         struct          net_device *dev;
2541         struct          ethtool_modinfo modinfo;
2542         struct          ethtool_eeprom ee;
2543
2544         error = sysctl_handle_int(oidp, &result, 0, req);
2545         if (error || !req->newptr)
2546                 return (error);
2547
2548         if (result == 1) {
2549                 priv = arg1;
2550                 dev = priv->dev;
2551                 data = kmalloc(PAGE_SIZE, GFP_KERNEL);
2552
2553                 error = mlx4_en_get_module_info(dev, &modinfo);
2554                 if (error) {
2555                         en_err(priv,
2556                                "mlx4_en_get_module_info returned with error - FAILED (0x%x)\n",
2557                                -error);
2558                         goto out;
2559                 }
2560
2561                 ee.len = modinfo.eeprom_len;
2562                 ee.offset = 0;
2563
2564                 error = mlx4_en_get_module_eeprom(dev, &ee, data);
2565                 if (error) {
2566                         en_err(priv,
2567                                "mlx4_en_get_module_eeprom returned with error - FAILED (0x%x)\n",
2568                                -error);
2569                         /* Continue printing partial information in case of an error */
2570                 }
2571
2572                 /* EEPROM information will be printed in dmesg */
2573                 mlx4_en_print_eeprom(data, ee.len);
2574 out:
2575                 kfree(data);
2576         }
2577         /* Return zero to prevent sysctl failure. */
2578         return (0);
2579 }
2580
2581 static int mlx4_en_set_tx_ppp(SYSCTL_HANDLER_ARGS)
2582 {
2583         struct mlx4_en_priv *priv;
2584         int ppp;
2585         int error;
2586
2587         priv = arg1;
2588         ppp = priv->prof->tx_ppp;
2589         error = sysctl_handle_int(oidp, &ppp, 0, req);
2590         if (error || !req->newptr)
2591                 return (error);
2592         if (ppp > 0xff || ppp < 0)
2593                 return (-EINVAL);
2594         priv->prof->tx_ppp = ppp;
2595         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2596                                        priv->rx_mb_size + ETHER_CRC_LEN,
2597                                        priv->prof->tx_pause,
2598                                        priv->prof->tx_ppp,
2599                                        priv->prof->rx_pause,
2600                                        priv->prof->rx_ppp);
2601
2602         return (error);
2603 }
2604
2605 static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS)
2606 {
2607         struct mlx4_en_priv *priv;
2608         struct mlx4_en_dev *mdev;
2609         int ppp;
2610         int error;
2611         int port_up;
2612
2613         port_up = 0;
2614         priv = arg1;
2615         mdev = priv->mdev;
2616         ppp = priv->prof->rx_ppp;
2617         error = sysctl_handle_int(oidp, &ppp, 0, req);
2618         if (error || !req->newptr)
2619                 return (error);
2620         if (ppp > 0xff || ppp < 0)
2621                 return (-EINVAL);
2622         /* See if we have to change the number of tx queues. */
2623         if (!ppp != !priv->prof->rx_ppp) {
2624                 mutex_lock(&mdev->state_lock);
2625                 if (priv->port_up) {
2626                         port_up = 1;
2627                         mlx4_en_stop_port(priv->dev);
2628                 }
2629                 mlx4_en_free_resources(priv);
2630                 priv->prof->rx_ppp = ppp;
2631                 error = -mlx4_en_alloc_resources(priv);
2632                 if (error)
2633                         en_err(priv, "Failed reallocating port resources\n");
2634                 if (error == 0 && port_up) {
2635                         error = -mlx4_en_start_port(priv->dev);
2636                         if (error)
2637                                 en_err(priv, "Failed starting port\n");
2638                 }
2639                 mutex_unlock(&mdev->state_lock);
2640                 return (error);
2641
2642         }
2643         priv->prof->rx_ppp = ppp;
2644         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2645                                        priv->rx_mb_size + ETHER_CRC_LEN,
2646                                        priv->prof->tx_pause,
2647                                        priv->prof->tx_ppp,
2648                                        priv->prof->rx_pause,
2649                                        priv->prof->rx_ppp);
2650
2651         return (error);
2652 }
2653
2654 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv)
2655 {
2656         struct net_device *dev;
2657         struct sysctl_ctx_list *ctx;
2658         struct sysctl_oid *node;
2659         struct sysctl_oid_list *node_list;
2660         struct sysctl_oid *coal;
2661         struct sysctl_oid_list *coal_list;
2662         const char *pnameunit;
2663         dev = priv->dev;
2664         ctx = &priv->conf_ctx;
2665         pnameunit = device_get_nameunit(priv->mdev->pdev->dev.bsddev);
2666
2667         sysctl_ctx_init(ctx);
2668         priv->conf_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
2669             OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet");
2670         node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2671             "conf", CTLFLAG_RD, NULL, "Configuration");
2672         node_list = SYSCTL_CHILDREN(node);
2673
2674         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable",
2675             CTLFLAG_RW, &priv->msg_enable, 0,
2676             "Driver message enable bitfield");
2677         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings",
2678             CTLFLAG_RD, &priv->rx_ring_num, 0,
2679             "Number of receive rings");
2680         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings",
2681             CTLFLAG_RD, &priv->tx_ring_num, 0,
2682             "Number of transmit rings");
2683         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size",
2684             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2685             mlx4_en_set_rx_ring_size, "I", "Receive ring size");
2686         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size",
2687             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2688             mlx4_en_set_tx_ring_size, "I", "Transmit ring size");
2689         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_ppp",
2690             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2691             mlx4_en_set_tx_ppp, "I", "TX Per-priority pause");
2692         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_ppp",
2693             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2694             mlx4_en_set_rx_ppp, "I", "RX Per-priority pause");
2695         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "port_num",
2696             CTLFLAG_RD, &priv->port, 0,
2697             "Port Number");
2698         SYSCTL_ADD_STRING(ctx, node_list, OID_AUTO, "device_name",
2699             CTLFLAG_RD, __DECONST(void *, pnameunit), 0,
2700             "PCI device name");
2701         /* Add coalescer configuration. */
2702         coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO,
2703             "coalesce", CTLFLAG_RD, NULL, "Interrupt coalesce configuration");
2704         coal_list = SYSCTL_CHILDREN(coal);
2705         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low",
2706             CTLFLAG_RW, &priv->pkt_rate_low, 0,
2707             "Packets per-second for minimum delay");
2708         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low",
2709             CTLFLAG_RW, &priv->rx_usecs_low, 0,
2710             "Minimum RX delay in micro-seconds");
2711         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high",
2712             CTLFLAG_RW, &priv->pkt_rate_high, 0,
2713             "Packets per-second for maximum delay");
2714         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high",
2715             CTLFLAG_RW, &priv->rx_usecs_high, 0,
2716             "Maximum RX delay in micro-seconds");
2717         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval",
2718             CTLFLAG_RW, &priv->sample_interval, 0,
2719             "adaptive frequency in units of HZ ticks");
2720         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal",
2721             CTLFLAG_RW, &priv->adaptive_rx_coal, 0,
2722             "Enable adaptive rx coalescing");
2723         /* EEPROM support */
2724         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "eeprom_info",
2725             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2726             mlx4_en_read_eeprom, "I", "EEPROM information");
2727 }
2728
2729 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv)
2730 {
2731         struct sysctl_ctx_list *ctx;
2732         struct sysctl_oid_list *node_list;
2733         struct sysctl_oid *ring_node;
2734         struct sysctl_oid_list *ring_list;
2735         struct mlx4_en_tx_ring *tx_ring;
2736         struct mlx4_en_rx_ring *rx_ring;
2737         char namebuf[128];
2738         int i;
2739
2740         ctx = &priv->stat_ctx;
2741         sysctl_ctx_init(ctx);
2742         priv->stat_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2743             "stat", CTLFLAG_RD, NULL, "Statistics");
2744         node_list = SYSCTL_CHILDREN(priv->stat_sysctl);
2745
2746 #ifdef MLX4_EN_PERF_STAT
2747         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD,
2748             &priv->pstats.tx_poll, "TX Poll calls");
2749         SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD,
2750             &priv->pstats.tx_pktsz_avg, "TX average packet size");
2751         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD,
2752             &priv->pstats.inflight_avg, "TX average packets in-flight");
2753         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD,
2754             &priv->pstats.tx_coal_avg, "TX average coalesced completions");
2755         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD,
2756             &priv->pstats.rx_coal_avg, "RX average coalesced completions");
2757 #endif
2758
2759         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD,
2760             &priv->port_stats.tso_packets, 0, "TSO packets sent");
2761         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD,
2762             &priv->port_stats.queue_stopped, 0, "Queue full");
2763         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD,
2764             &priv->port_stats.wake_queue, 0, "Queue resumed after full");
2765         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD,
2766             &priv->port_stats.tx_timeout, 0, "Transmit timeouts");
2767         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_oversized_packets", CTLFLAG_RD,
2768             &priv->port_stats.oversized_packets, 0, "TX oversized packets, m_defrag failed");
2769         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD,
2770             &priv->port_stats.rx_alloc_failed, 0, "RX failed to allocate mbuf");
2771         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD,
2772             &priv->port_stats.rx_chksum_good, 0, "RX checksum offload success");
2773         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD,
2774             &priv->port_stats.rx_chksum_none, 0, "RX without checksum offload");
2775         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_chksum_offload",
2776             CTLFLAG_RD, &priv->port_stats.tx_chksum_offload, 0,
2777             "TX checksum offloads");
2778         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "defrag_attempts",
2779             CTLFLAG_RD, &priv->port_stats.defrag_attempts, 0,
2780             "Oversized chains defragged");
2781
2782         /* Could strdup the names and add in a loop.  This is simpler. */
2783         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_bytes", CTLFLAG_RD,
2784             &priv->pkstats.rx_bytes, 0, "RX Bytes");
2785         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_packets", CTLFLAG_RD,
2786             &priv->pkstats.rx_packets, 0, "RX packets");
2787         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_multicast_packets", CTLFLAG_RD,
2788             &priv->pkstats.rx_multicast_packets, 0, "RX Multicast Packets");
2789         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_broadcast_packets", CTLFLAG_RD,
2790             &priv->pkstats.rx_broadcast_packets, 0, "RX Broadcast Packets");
2791         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_errors", CTLFLAG_RD,
2792             &priv->pkstats.rx_errors, 0, "RX Errors");
2793         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_dropped", CTLFLAG_RD,
2794             &priv->pkstats.rx_dropped, 0, "RX Dropped");
2795         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_length_errors", CTLFLAG_RD,
2796             &priv->pkstats.rx_length_errors, 0, "RX Length Errors");
2797         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_over_errors", CTLFLAG_RD,
2798             &priv->pkstats.rx_over_errors, 0, "RX Over Errors");
2799         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_crc_errors", CTLFLAG_RD,
2800             &priv->pkstats.rx_crc_errors, 0, "RX CRC Errors");
2801         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_jabbers", CTLFLAG_RD,
2802             &priv->pkstats.rx_jabbers, 0, "RX Jabbers");
2803
2804         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_in_range_length_error", CTLFLAG_RD,
2805             &priv->pkstats.rx_in_range_length_error, 0, "RX IN_Range Length Error");
2806         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_out_range_length_error",
2807             CTLFLAG_RD, &priv->pkstats.rx_out_range_length_error, 0,
2808             "RX Out Range Length Error");
2809         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_lt_64_bytes_packets", CTLFLAG_RD,
2810             &priv->pkstats.rx_lt_64_bytes_packets, 0, "RX Lt 64 Bytes Packets");
2811         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_127_bytes_packets", CTLFLAG_RD,
2812             &priv->pkstats.rx_127_bytes_packets, 0, "RX 127 bytes Packets");
2813         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_255_bytes_packets", CTLFLAG_RD,
2814             &priv->pkstats.rx_255_bytes_packets, 0, "RX 255 bytes Packets");
2815         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_511_bytes_packets", CTLFLAG_RD,
2816             &priv->pkstats.rx_511_bytes_packets, 0, "RX 511 bytes Packets");
2817         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1023_bytes_packets", CTLFLAG_RD,
2818             &priv->pkstats.rx_1023_bytes_packets, 0, "RX 1023 bytes Packets");
2819         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1518_bytes_packets", CTLFLAG_RD,
2820             &priv->pkstats.rx_1518_bytes_packets, 0, "RX 1518 bytes Packets");
2821         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1522_bytes_packets", CTLFLAG_RD,
2822             &priv->pkstats.rx_1522_bytes_packets, 0, "RX 1522 bytes Packets");
2823         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1548_bytes_packets", CTLFLAG_RD,
2824             &priv->pkstats.rx_1548_bytes_packets, 0, "RX 1548 bytes Packets");
2825         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_gt_1548_bytes_packets", CTLFLAG_RD,
2826             &priv->pkstats.rx_gt_1548_bytes_packets, 0,
2827             "RX Greater Then 1548 bytes Packets");
2828
2829         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_packets", CTLFLAG_RD,
2830             &priv->pkstats.tx_packets, 0, "TX packets");
2831         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_bytes", CTLFLAG_RD,
2832             &priv->pkstats.tx_bytes, 0, "TX Bytes");
2833         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_multicast_packets", CTLFLAG_RD,
2834             &priv->pkstats.tx_multicast_packets, 0, "TX Multicast Packets");
2835         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_broadcast_packets", CTLFLAG_RD,
2836             &priv->pkstats.tx_broadcast_packets, 0, "TX Broadcast Packets");
2837         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_errors", CTLFLAG_RD,
2838             &priv->pkstats.tx_errors, 0, "TX Errors");
2839         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_dropped", CTLFLAG_RD,
2840             &priv->pkstats.tx_dropped, 0, "TX Dropped");
2841         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_lt_64_bytes_packets", CTLFLAG_RD,
2842             &priv->pkstats.tx_lt_64_bytes_packets, 0, "TX Less Then 64 Bytes Packets");
2843         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_127_bytes_packets", CTLFLAG_RD,
2844             &priv->pkstats.tx_127_bytes_packets, 0, "TX 127 Bytes Packets");
2845         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_255_bytes_packets", CTLFLAG_RD,
2846             &priv->pkstats.tx_255_bytes_packets, 0, "TX 255 Bytes Packets");
2847         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_511_bytes_packets", CTLFLAG_RD,
2848             &priv->pkstats.tx_511_bytes_packets, 0, "TX 511 Bytes Packets");
2849         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1023_bytes_packets", CTLFLAG_RD,
2850             &priv->pkstats.tx_1023_bytes_packets, 0, "TX 1023 Bytes Packets");
2851         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1518_bytes_packets", CTLFLAG_RD,
2852             &priv->pkstats.tx_1518_bytes_packets, 0, "TX 1518 Bytes Packets");
2853         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1522_bytes_packets", CTLFLAG_RD,
2854             &priv->pkstats.tx_1522_bytes_packets, 0, "TX 1522 Bytes Packets");
2855         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1548_bytes_packets", CTLFLAG_RD,
2856             &priv->pkstats.tx_1548_bytes_packets, 0, "TX 1548 Bytes Packets");
2857         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_gt_1548_bytes_packets", CTLFLAG_RD,
2858             &priv->pkstats.tx_gt_1548_bytes_packets, 0,
2859             "TX Greater Then 1548 Bytes Packets");
2860
2861         for (i = 0; i < priv->tx_ring_num; i++) {
2862                 tx_ring = priv->tx_ring[i];
2863                 snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i);
2864                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2865                     CTLFLAG_RD, NULL, "TX Ring");
2866                 ring_list = SYSCTL_CHILDREN(ring_node);
2867                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "packets",
2868                     CTLFLAG_RD, &tx_ring->packets, 0, "TX packets");
2869                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "bytes",
2870                     CTLFLAG_RD, &tx_ring->bytes, 0, "TX bytes");
2871                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "tso_packets",
2872                     CTLFLAG_RD, &tx_ring->tso_packets, 0, "TSO packets");
2873                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "defrag_attempts",
2874                     CTLFLAG_RD, &tx_ring->defrag_attempts, 0,
2875                     "Oversized chains defragged");
2876         }
2877
2878         for (i = 0; i < priv->rx_ring_num; i++) {
2879                 rx_ring = priv->rx_ring[i];
2880                 snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i);
2881                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2882                     CTLFLAG_RD, NULL, "RX Ring");
2883                 ring_list = SYSCTL_CHILDREN(ring_node);
2884                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "packets",
2885                     CTLFLAG_RD, &rx_ring->packets, 0, "RX packets");
2886                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "bytes",
2887                     CTLFLAG_RD, &rx_ring->bytes, 0, "RX bytes");
2888                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "error",
2889                     CTLFLAG_RD, &rx_ring->errors, 0, "RX soft errors");
2890         }
2891 }