1 /* 2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 * 32 */ 33 34 #include <linux/etherdevice.h> 35 #include <linux/tcp.h> 36 #include <linux/if_vlan.h> 37 #include <linux/delay.h> 38 #include <linux/slab.h> 39 #include <linux/hash.h> 40 #include <net/ip.h> 41 #include <net/busy_poll.h> 42 #include <net/vxlan.h> 43 #include <net/devlink.h> 44 45 #include <linux/mlx4/driver.h> 46 #include <linux/mlx4/device.h> 47 #include <linux/mlx4/cmd.h> 48 #include <linux/mlx4/cq.h> 49 50 #include "mlx4_en.h" 51 #include "en_port.h" 52 53 int mlx4_en_setup_tc(struct net_device *dev, u8 up) 54 { 55 struct mlx4_en_priv *priv = netdev_priv(dev); 56 int i; 57 unsigned int offset = 0; 58 59 if (up && up != MLX4_EN_NUM_UP) 60 return -EINVAL; 61 62 netdev_set_num_tc(dev, up); 63 64 /* Partition Tx queues evenly amongst UP's */ 65 for (i = 0; i < up; i++) { 66 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset); 67 offset += priv->num_tx_rings_p_up; 68 } 69 70 return 0; 71 } 72 73 static int __mlx4_en_setup_tc(struct net_device *dev, u32 handle, __be16 proto, 74 struct tc_to_netdev *tc) 75 { 76 if (tc->type != TC_SETUP_MQPRIO) 77 return -EINVAL; 78 79 return mlx4_en_setup_tc(dev, tc->tc); 80 } 81 82 #ifdef CONFIG_RFS_ACCEL 83 84 struct mlx4_en_filter { 85 struct list_head next; 86 struct work_struct work; 87 88 u8 ip_proto; 89 __be32 src_ip; 90 __be32 dst_ip; 91 __be16 src_port; 92 __be16 dst_port; 93 94 int rxq_index; 95 struct mlx4_en_priv *priv; 96 u32 flow_id; /* RFS infrastructure id */ 97 int id; /* mlx4_en driver id */ 98 u64 reg_id; /* Flow steering API id */ 99 u8 activated; /* Used to prevent expiry before filter 100 * is attached 101 */ 102 struct hlist_node filter_chain; 103 }; 104 105 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv); 106 107 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto) 108 { 109 switch (ip_proto) { 110 case IPPROTO_UDP: 111 return MLX4_NET_TRANS_RULE_ID_UDP; 112 case IPPROTO_TCP: 113 return MLX4_NET_TRANS_RULE_ID_TCP; 114 default: 115 return MLX4_NET_TRANS_RULE_NUM; 116 } 117 }; 118 119 static void mlx4_en_filter_work(struct work_struct *work) 120 { 121 struct mlx4_en_filter *filter = container_of(work, 122 struct mlx4_en_filter, 123 work); 124 struct mlx4_en_priv *priv = filter->priv; 125 struct mlx4_spec_list spec_tcp_udp = { 126 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto), 127 { 128 .tcp_udp = { 129 .dst_port = filter->dst_port, 130 .dst_port_msk = (__force __be16)-1, 131 .src_port = filter->src_port, 132 .src_port_msk = (__force __be16)-1, 133 }, 134 }, 135 }; 136 struct mlx4_spec_list spec_ip = { 137 .id = MLX4_NET_TRANS_RULE_ID_IPV4, 138 { 139 .ipv4 = { 140 .dst_ip = filter->dst_ip, 141 .dst_ip_msk = (__force __be32)-1, 142 .src_ip = filter->src_ip, 143 .src_ip_msk = (__force __be32)-1, 144 }, 145 }, 146 }; 147 struct mlx4_spec_list spec_eth = { 148 .id = MLX4_NET_TRANS_RULE_ID_ETH, 149 }; 150 struct mlx4_net_trans_rule rule = { 151 .list = LIST_HEAD_INIT(rule.list), 152 .queue_mode = MLX4_NET_TRANS_Q_LIFO, 153 .exclusive = 1, 154 .allow_loopback = 1, 155 .promisc_mode = MLX4_FS_REGULAR, 156 .port = priv->port, 157 .priority = MLX4_DOMAIN_RFS, 158 }; 159 int rc; 160 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 161 162 if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) { 163 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n", 164 filter->ip_proto); 165 goto ignore; 166 } 167 list_add_tail(&spec_eth.list, &rule.list); 168 list_add_tail(&spec_ip.list, &rule.list); 169 list_add_tail(&spec_tcp_udp.list, &rule.list); 170 171 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn; 172 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN); 173 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 174 175 filter->activated = 0; 176 177 if (filter->reg_id) { 178 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 179 if (rc && rc != -ENOENT) 180 en_err(priv, "Error detaching flow. rc = %d\n", rc); 181 } 182 183 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id); 184 if (rc) 185 en_err(priv, "Error attaching flow. err = %d\n", rc); 186 187 ignore: 188 mlx4_en_filter_rfs_expire(priv); 189 190 filter->activated = 1; 191 } 192 193 static inline struct hlist_head * 194 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 195 __be16 src_port, __be16 dst_port) 196 { 197 unsigned long l; 198 int bucket_idx; 199 200 l = (__force unsigned long)src_port | 201 ((__force unsigned long)dst_port << 2); 202 l ^= (__force unsigned long)(src_ip ^ dst_ip); 203 204 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT); 205 206 return &priv->filter_hash[bucket_idx]; 207 } 208 209 static struct mlx4_en_filter * 210 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip, 211 __be32 dst_ip, u8 ip_proto, __be16 src_port, 212 __be16 dst_port, u32 flow_id) 213 { 214 struct mlx4_en_filter *filter = NULL; 215 216 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC); 217 if (!filter) 218 return NULL; 219 220 filter->priv = priv; 221 filter->rxq_index = rxq_index; 222 INIT_WORK(&filter->work, mlx4_en_filter_work); 223 224 filter->src_ip = src_ip; 225 filter->dst_ip = dst_ip; 226 filter->ip_proto = ip_proto; 227 filter->src_port = src_port; 228 filter->dst_port = dst_port; 229 230 filter->flow_id = flow_id; 231 232 filter->id = priv->last_filter_id++ % RPS_NO_FILTER; 233 234 list_add_tail(&filter->next, &priv->filters); 235 hlist_add_head(&filter->filter_chain, 236 filter_hash_bucket(priv, src_ip, dst_ip, src_port, 237 dst_port)); 238 239 return filter; 240 } 241 242 static void mlx4_en_filter_free(struct mlx4_en_filter *filter) 243 { 244 struct mlx4_en_priv *priv = filter->priv; 245 int rc; 246 247 list_del(&filter->next); 248 249 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 250 if (rc && rc != -ENOENT) 251 en_err(priv, "Error detaching flow. rc = %d\n", rc); 252 253 kfree(filter); 254 } 255 256 static inline struct mlx4_en_filter * 257 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 258 u8 ip_proto, __be16 src_port, __be16 dst_port) 259 { 260 struct mlx4_en_filter *filter; 261 struct mlx4_en_filter *ret = NULL; 262 263 hlist_for_each_entry(filter, 264 filter_hash_bucket(priv, src_ip, dst_ip, 265 src_port, dst_port), 266 filter_chain) { 267 if (filter->src_ip == src_ip && 268 filter->dst_ip == dst_ip && 269 filter->ip_proto == ip_proto && 270 filter->src_port == src_port && 271 filter->dst_port == dst_port) { 272 ret = filter; 273 break; 274 } 275 } 276 277 return ret; 278 } 279 280 static int 281 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 282 u16 rxq_index, u32 flow_id) 283 { 284 struct mlx4_en_priv *priv = netdev_priv(net_dev); 285 struct mlx4_en_filter *filter; 286 const struct iphdr *ip; 287 const __be16 *ports; 288 u8 ip_proto; 289 __be32 src_ip; 290 __be32 dst_ip; 291 __be16 src_port; 292 __be16 dst_port; 293 int nhoff = skb_network_offset(skb); 294 int ret = 0; 295 296 if (skb->protocol != htons(ETH_P_IP)) 297 return -EPROTONOSUPPORT; 298 299 ip = (const struct iphdr *)(skb->data + nhoff); 300 if (ip_is_fragment(ip)) 301 return -EPROTONOSUPPORT; 302 303 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP)) 304 return -EPROTONOSUPPORT; 305 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); 306 307 ip_proto = ip->protocol; 308 src_ip = ip->saddr; 309 dst_ip = ip->daddr; 310 src_port = ports[0]; 311 dst_port = ports[1]; 312 313 spin_lock_bh(&priv->filters_lock); 314 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto, 315 src_port, dst_port); 316 if (filter) { 317 if (filter->rxq_index == rxq_index) 318 goto out; 319 320 filter->rxq_index = rxq_index; 321 } else { 322 filter = mlx4_en_filter_alloc(priv, rxq_index, 323 src_ip, dst_ip, ip_proto, 324 src_port, dst_port, flow_id); 325 if (!filter) { 326 ret = -ENOMEM; 327 goto err; 328 } 329 } 330 331 queue_work(priv->mdev->workqueue, &filter->work); 332 333 out: 334 ret = filter->id; 335 err: 336 spin_unlock_bh(&priv->filters_lock); 337 338 return ret; 339 } 340 341 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv) 342 { 343 struct mlx4_en_filter *filter, *tmp; 344 LIST_HEAD(del_list); 345 346 spin_lock_bh(&priv->filters_lock); 347 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 348 list_move(&filter->next, &del_list); 349 hlist_del(&filter->filter_chain); 350 } 351 spin_unlock_bh(&priv->filters_lock); 352 353 list_for_each_entry_safe(filter, tmp, &del_list, next) { 354 cancel_work_sync(&filter->work); 355 mlx4_en_filter_free(filter); 356 } 357 } 358 359 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv) 360 { 361 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL; 362 LIST_HEAD(del_list); 363 int i = 0; 364 365 spin_lock_bh(&priv->filters_lock); 366 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 367 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA) 368 break; 369 370 if (filter->activated && 371 !work_pending(&filter->work) && 372 rps_may_expire_flow(priv->dev, 373 filter->rxq_index, filter->flow_id, 374 filter->id)) { 375 list_move(&filter->next, &del_list); 376 hlist_del(&filter->filter_chain); 377 } else 378 last_filter = filter; 379 380 i++; 381 } 382 383 if (last_filter && (&last_filter->next != priv->filters.next)) 384 list_move(&priv->filters, &last_filter->next); 385 386 spin_unlock_bh(&priv->filters_lock); 387 388 list_for_each_entry_safe(filter, tmp, &del_list, next) 389 mlx4_en_filter_free(filter); 390 } 391 #endif 392 393 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev, 394 __be16 proto, u16 vid) 395 { 396 struct mlx4_en_priv *priv = netdev_priv(dev); 397 struct mlx4_en_dev *mdev = priv->mdev; 398 int err; 399 int idx; 400 401 en_dbg(HW, priv, "adding VLAN:%d\n", vid); 402 403 set_bit(vid, priv->active_vlans); 404 405 /* Add VID to port VLAN filter */ 406 mutex_lock(&mdev->state_lock); 407 if (mdev->device_up && priv->port_up) { 408 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 409 if (err) { 410 en_err(priv, "Failed configuring VLAN filter\n"); 411 goto out; 412 } 413 } 414 err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx); 415 if (err) 416 en_dbg(HW, priv, "Failed adding vlan %d\n", vid); 417 418 out: 419 mutex_unlock(&mdev->state_lock); 420 return err; 421 } 422 423 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, 424 __be16 proto, u16 vid) 425 { 426 struct mlx4_en_priv *priv = netdev_priv(dev); 427 struct mlx4_en_dev *mdev = priv->mdev; 428 int err = 0; 429 430 en_dbg(HW, priv, "Killing VID:%d\n", vid); 431 432 clear_bit(vid, priv->active_vlans); 433 434 /* Remove VID from port VLAN filter */ 435 mutex_lock(&mdev->state_lock); 436 mlx4_unregister_vlan(mdev->dev, priv->port, vid); 437 438 if (mdev->device_up && priv->port_up) { 439 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 440 if (err) 441 en_err(priv, "Failed configuring VLAN filter\n"); 442 } 443 mutex_unlock(&mdev->state_lock); 444 445 return err; 446 } 447 448 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) 449 { 450 int i; 451 for (i = ETH_ALEN - 1; i >= 0; --i) { 452 dst_mac[i] = src_mac & 0xff; 453 src_mac >>= 8; 454 } 455 memset(&dst_mac[ETH_ALEN], 0, 2); 456 } 457 458 459 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr, 460 int qpn, u64 *reg_id) 461 { 462 int err; 463 464 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 465 priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 466 return 0; /* do nothing */ 467 468 err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn, 469 MLX4_DOMAIN_NIC, reg_id); 470 if (err) { 471 en_err(priv, "failed to add vxlan steering rule, err %d\n", err); 472 return err; 473 } 474 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id); 475 return 0; 476 } 477 478 479 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv, 480 unsigned char *mac, int *qpn, u64 *reg_id) 481 { 482 struct mlx4_en_dev *mdev = priv->mdev; 483 struct mlx4_dev *dev = mdev->dev; 484 int err; 485 486 switch (dev->caps.steering_mode) { 487 case MLX4_STEERING_MODE_B0: { 488 struct mlx4_qp qp; 489 u8 gid[16] = {0}; 490 491 qp.qpn = *qpn; 492 memcpy(&gid[10], mac, ETH_ALEN); 493 gid[5] = priv->port; 494 495 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH); 496 break; 497 } 498 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 499 struct mlx4_spec_list spec_eth = { {NULL} }; 500 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 501 502 struct mlx4_net_trans_rule rule = { 503 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 504 .exclusive = 0, 505 .allow_loopback = 1, 506 .promisc_mode = MLX4_FS_REGULAR, 507 .priority = MLX4_DOMAIN_NIC, 508 }; 509 510 rule.port = priv->port; 511 rule.qpn = *qpn; 512 INIT_LIST_HEAD(&rule.list); 513 514 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH; 515 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN); 516 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 517 list_add_tail(&spec_eth.list, &rule.list); 518 519 err = mlx4_flow_attach(dev, &rule, reg_id); 520 break; 521 } 522 default: 523 return -EINVAL; 524 } 525 if (err) 526 en_warn(priv, "Failed Attaching Unicast\n"); 527 528 return err; 529 } 530 531 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv, 532 unsigned char *mac, int qpn, u64 reg_id) 533 { 534 struct mlx4_en_dev *mdev = priv->mdev; 535 struct mlx4_dev *dev = mdev->dev; 536 537 switch (dev->caps.steering_mode) { 538 case MLX4_STEERING_MODE_B0: { 539 struct mlx4_qp qp; 540 u8 gid[16] = {0}; 541 542 qp.qpn = qpn; 543 memcpy(&gid[10], mac, ETH_ALEN); 544 gid[5] = priv->port; 545 546 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH); 547 break; 548 } 549 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 550 mlx4_flow_detach(dev, reg_id); 551 break; 552 } 553 default: 554 en_err(priv, "Invalid steering mode.\n"); 555 } 556 } 557 558 static int mlx4_en_get_qp(struct mlx4_en_priv *priv) 559 { 560 struct mlx4_en_dev *mdev = priv->mdev; 561 struct mlx4_dev *dev = mdev->dev; 562 int index = 0; 563 int err = 0; 564 int *qpn = &priv->base_qpn; 565 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 566 567 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n", 568 priv->dev->dev_addr); 569 index = mlx4_register_mac(dev, priv->port, mac); 570 if (index < 0) { 571 err = index; 572 en_err(priv, "Failed adding MAC: %pM\n", 573 priv->dev->dev_addr); 574 return err; 575 } 576 577 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 578 int base_qpn = mlx4_get_base_qpn(dev, priv->port); 579 *qpn = base_qpn + index; 580 return 0; 581 } 582 583 err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP); 584 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); 585 if (err) { 586 en_err(priv, "Failed to reserve qp for mac registration\n"); 587 mlx4_unregister_mac(dev, priv->port, mac); 588 return err; 589 } 590 591 return 0; 592 } 593 594 static void mlx4_en_put_qp(struct mlx4_en_priv *priv) 595 { 596 struct mlx4_en_dev *mdev = priv->mdev; 597 struct mlx4_dev *dev = mdev->dev; 598 int qpn = priv->base_qpn; 599 600 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 601 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 602 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 603 priv->dev->dev_addr); 604 mlx4_unregister_mac(dev, priv->port, mac); 605 } else { 606 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", 607 priv->port, qpn); 608 mlx4_qp_release_range(dev, qpn, 1); 609 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 610 } 611 } 612 613 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, 614 unsigned char *new_mac, unsigned char *prev_mac) 615 { 616 struct mlx4_en_dev *mdev = priv->mdev; 617 struct mlx4_dev *dev = mdev->dev; 618 int err = 0; 619 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac); 620 621 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { 622 struct hlist_head *bucket; 623 unsigned int mac_hash; 624 struct mlx4_mac_entry *entry; 625 struct hlist_node *tmp; 626 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac); 627 628 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; 629 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 630 if (ether_addr_equal_64bits(entry->mac, prev_mac)) { 631 mlx4_en_uc_steer_release(priv, entry->mac, 632 qpn, entry->reg_id); 633 mlx4_unregister_mac(dev, priv->port, 634 prev_mac_u64); 635 hlist_del_rcu(&entry->hlist); 636 synchronize_rcu(); 637 memcpy(entry->mac, new_mac, ETH_ALEN); 638 entry->reg_id = 0; 639 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; 640 hlist_add_head_rcu(&entry->hlist, 641 &priv->mac_hash[mac_hash]); 642 mlx4_register_mac(dev, priv->port, new_mac_u64); 643 err = mlx4_en_uc_steer_add(priv, new_mac, 644 &qpn, 645 &entry->reg_id); 646 if (err) 647 return err; 648 if (priv->tunnel_reg_id) { 649 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 650 priv->tunnel_reg_id = 0; 651 } 652 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn, 653 &priv->tunnel_reg_id); 654 return err; 655 } 656 } 657 return -EINVAL; 658 } 659 660 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); 661 } 662 663 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv, 664 unsigned char new_mac[ETH_ALEN + 2]) 665 { 666 int err = 0; 667 668 if (priv->port_up) { 669 /* Remove old MAC and insert the new one */ 670 err = mlx4_en_replace_mac(priv, priv->base_qpn, 671 new_mac, priv->current_mac); 672 if (err) 673 en_err(priv, "Failed changing HW MAC address\n"); 674 } else 675 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); 676 677 if (!err) 678 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac)); 679 680 return err; 681 } 682 683 static int mlx4_en_set_mac(struct net_device *dev, void *addr) 684 { 685 struct mlx4_en_priv *priv = netdev_priv(dev); 686 struct mlx4_en_dev *mdev = priv->mdev; 687 struct sockaddr *saddr = addr; 688 unsigned char new_mac[ETH_ALEN + 2]; 689 int err; 690 691 if (!is_valid_ether_addr(saddr->sa_data)) 692 return -EADDRNOTAVAIL; 693 694 mutex_lock(&mdev->state_lock); 695 memcpy(new_mac, saddr->sa_data, ETH_ALEN); 696 err = mlx4_en_do_set_mac(priv, new_mac); 697 if (!err) 698 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); 699 mutex_unlock(&mdev->state_lock); 700 701 return err; 702 } 703 704 static void mlx4_en_clear_list(struct net_device *dev) 705 { 706 struct mlx4_en_priv *priv = netdev_priv(dev); 707 struct mlx4_en_mc_list *tmp, *mc_to_del; 708 709 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { 710 list_del(&mc_to_del->list); 711 kfree(mc_to_del); 712 } 713 } 714 715 static void mlx4_en_cache_mclist(struct net_device *dev) 716 { 717 struct mlx4_en_priv *priv = netdev_priv(dev); 718 struct netdev_hw_addr *ha; 719 struct mlx4_en_mc_list *tmp; 720 721 mlx4_en_clear_list(dev); 722 netdev_for_each_mc_addr(ha, dev) { 723 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); 724 if (!tmp) { 725 mlx4_en_clear_list(dev); 726 return; 727 } 728 memcpy(tmp->addr, ha->addr, ETH_ALEN); 729 list_add_tail(&tmp->list, &priv->mc_list); 730 } 731 } 732 733 static void update_mclist_flags(struct mlx4_en_priv *priv, 734 struct list_head *dst, 735 struct list_head *src) 736 { 737 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; 738 bool found; 739 740 /* Find all the entries that should be removed from dst, 741 * These are the entries that are not found in src 742 */ 743 list_for_each_entry(dst_tmp, dst, list) { 744 found = false; 745 list_for_each_entry(src_tmp, src, list) { 746 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 747 found = true; 748 break; 749 } 750 } 751 if (!found) 752 dst_tmp->action = MCLIST_REM; 753 } 754 755 /* Add entries that exist in src but not in dst 756 * mark them as need to add 757 */ 758 list_for_each_entry(src_tmp, src, list) { 759 found = false; 760 list_for_each_entry(dst_tmp, dst, list) { 761 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 762 dst_tmp->action = MCLIST_NONE; 763 found = true; 764 break; 765 } 766 } 767 if (!found) { 768 new_mc = kmemdup(src_tmp, 769 sizeof(struct mlx4_en_mc_list), 770 GFP_KERNEL); 771 if (!new_mc) 772 return; 773 774 new_mc->action = MCLIST_ADD; 775 list_add_tail(&new_mc->list, dst); 776 } 777 } 778 } 779 780 static void mlx4_en_set_rx_mode(struct net_device *dev) 781 { 782 struct mlx4_en_priv *priv = netdev_priv(dev); 783 784 if (!priv->port_up) 785 return; 786 787 queue_work(priv->mdev->workqueue, &priv->rx_mode_task); 788 } 789 790 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, 791 struct mlx4_en_dev *mdev) 792 { 793 int err = 0; 794 795 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { 796 if (netif_msg_rx_status(priv)) 797 en_warn(priv, "Entering promiscuous mode\n"); 798 priv->flags |= MLX4_EN_FLAG_PROMISC; 799 800 /* Enable promiscouos mode */ 801 switch (mdev->dev->caps.steering_mode) { 802 case MLX4_STEERING_MODE_DEVICE_MANAGED: 803 err = mlx4_flow_steer_promisc_add(mdev->dev, 804 priv->port, 805 priv->base_qpn, 806 MLX4_FS_ALL_DEFAULT); 807 if (err) 808 en_err(priv, "Failed enabling promiscuous mode\n"); 809 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 810 break; 811 812 case MLX4_STEERING_MODE_B0: 813 err = mlx4_unicast_promisc_add(mdev->dev, 814 priv->base_qpn, 815 priv->port); 816 if (err) 817 en_err(priv, "Failed enabling unicast promiscuous mode\n"); 818 819 /* Add the default qp number as multicast 820 * promisc 821 */ 822 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 823 err = mlx4_multicast_promisc_add(mdev->dev, 824 priv->base_qpn, 825 priv->port); 826 if (err) 827 en_err(priv, "Failed enabling multicast promiscuous mode\n"); 828 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 829 } 830 break; 831 832 case MLX4_STEERING_MODE_A0: 833 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 834 priv->port, 835 priv->base_qpn, 836 1); 837 if (err) 838 en_err(priv, "Failed enabling promiscuous mode\n"); 839 break; 840 } 841 842 /* Disable port multicast filter (unconditionally) */ 843 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 844 0, MLX4_MCAST_DISABLE); 845 if (err) 846 en_err(priv, "Failed disabling multicast filter\n"); 847 } 848 } 849 850 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv, 851 struct mlx4_en_dev *mdev) 852 { 853 int err = 0; 854 855 if (netif_msg_rx_status(priv)) 856 en_warn(priv, "Leaving promiscuous mode\n"); 857 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 858 859 /* Disable promiscouos mode */ 860 switch (mdev->dev->caps.steering_mode) { 861 case MLX4_STEERING_MODE_DEVICE_MANAGED: 862 err = mlx4_flow_steer_promisc_remove(mdev->dev, 863 priv->port, 864 MLX4_FS_ALL_DEFAULT); 865 if (err) 866 en_err(priv, "Failed disabling promiscuous mode\n"); 867 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 868 break; 869 870 case MLX4_STEERING_MODE_B0: 871 err = mlx4_unicast_promisc_remove(mdev->dev, 872 priv->base_qpn, 873 priv->port); 874 if (err) 875 en_err(priv, "Failed disabling unicast promiscuous mode\n"); 876 /* Disable Multicast promisc */ 877 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 878 err = mlx4_multicast_promisc_remove(mdev->dev, 879 priv->base_qpn, 880 priv->port); 881 if (err) 882 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 883 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 884 } 885 break; 886 887 case MLX4_STEERING_MODE_A0: 888 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 889 priv->port, 890 priv->base_qpn, 0); 891 if (err) 892 en_err(priv, "Failed disabling promiscuous mode\n"); 893 break; 894 } 895 } 896 897 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, 898 struct net_device *dev, 899 struct mlx4_en_dev *mdev) 900 { 901 struct mlx4_en_mc_list *mclist, *tmp; 902 u64 mcast_addr = 0; 903 u8 mc_list[16] = {0}; 904 int err = 0; 905 906 /* Enable/disable the multicast filter according to IFF_ALLMULTI */ 907 if (dev->flags & IFF_ALLMULTI) { 908 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 909 0, MLX4_MCAST_DISABLE); 910 if (err) 911 en_err(priv, "Failed disabling multicast filter\n"); 912 913 /* Add the default qp number as multicast promisc */ 914 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 915 switch (mdev->dev->caps.steering_mode) { 916 case MLX4_STEERING_MODE_DEVICE_MANAGED: 917 err = mlx4_flow_steer_promisc_add(mdev->dev, 918 priv->port, 919 priv->base_qpn, 920 MLX4_FS_MC_DEFAULT); 921 break; 922 923 case MLX4_STEERING_MODE_B0: 924 err = mlx4_multicast_promisc_add(mdev->dev, 925 priv->base_qpn, 926 priv->port); 927 break; 928 929 case MLX4_STEERING_MODE_A0: 930 break; 931 } 932 if (err) 933 en_err(priv, "Failed entering multicast promisc mode\n"); 934 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 935 } 936 } else { 937 /* Disable Multicast promisc */ 938 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 939 switch (mdev->dev->caps.steering_mode) { 940 case MLX4_STEERING_MODE_DEVICE_MANAGED: 941 err = mlx4_flow_steer_promisc_remove(mdev->dev, 942 priv->port, 943 MLX4_FS_MC_DEFAULT); 944 break; 945 946 case MLX4_STEERING_MODE_B0: 947 err = mlx4_multicast_promisc_remove(mdev->dev, 948 priv->base_qpn, 949 priv->port); 950 break; 951 952 case MLX4_STEERING_MODE_A0: 953 break; 954 } 955 if (err) 956 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 957 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 958 } 959 960 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 961 0, MLX4_MCAST_DISABLE); 962 if (err) 963 en_err(priv, "Failed disabling multicast filter\n"); 964 965 /* Flush mcast filter and init it with broadcast address */ 966 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, 967 1, MLX4_MCAST_CONFIG); 968 969 /* Update multicast list - we cache all addresses so they won't 970 * change while HW is updated holding the command semaphor */ 971 netif_addr_lock_bh(dev); 972 mlx4_en_cache_mclist(dev); 973 netif_addr_unlock_bh(dev); 974 list_for_each_entry(mclist, &priv->mc_list, list) { 975 mcast_addr = mlx4_mac_to_u64(mclist->addr); 976 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 977 mcast_addr, 0, MLX4_MCAST_CONFIG); 978 } 979 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 980 0, MLX4_MCAST_ENABLE); 981 if (err) 982 en_err(priv, "Failed enabling multicast filter\n"); 983 984 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); 985 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 986 if (mclist->action == MCLIST_REM) { 987 /* detach this address and delete from list */ 988 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 989 mc_list[5] = priv->port; 990 err = mlx4_multicast_detach(mdev->dev, 991 &priv->rss_map.indir_qp, 992 mc_list, 993 MLX4_PROT_ETH, 994 mclist->reg_id); 995 if (err) 996 en_err(priv, "Fail to detach multicast address\n"); 997 998 if (mclist->tunnel_reg_id) { 999 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id); 1000 if (err) 1001 en_err(priv, "Failed to detach multicast address\n"); 1002 } 1003 1004 /* remove from list */ 1005 list_del(&mclist->list); 1006 kfree(mclist); 1007 } else if (mclist->action == MCLIST_ADD) { 1008 /* attach the address */ 1009 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1010 /* needed for B0 steering support */ 1011 mc_list[5] = priv->port; 1012 err = mlx4_multicast_attach(mdev->dev, 1013 &priv->rss_map.indir_qp, 1014 mc_list, 1015 priv->port, 0, 1016 MLX4_PROT_ETH, 1017 &mclist->reg_id); 1018 if (err) 1019 en_err(priv, "Fail to attach multicast address\n"); 1020 1021 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn, 1022 &mclist->tunnel_reg_id); 1023 if (err) 1024 en_err(priv, "Failed to attach multicast address\n"); 1025 } 1026 } 1027 } 1028 } 1029 1030 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, 1031 struct net_device *dev, 1032 struct mlx4_en_dev *mdev) 1033 { 1034 struct netdev_hw_addr *ha; 1035 struct mlx4_mac_entry *entry; 1036 struct hlist_node *tmp; 1037 bool found; 1038 u64 mac; 1039 int err = 0; 1040 struct hlist_head *bucket; 1041 unsigned int i; 1042 int removed = 0; 1043 u32 prev_flags; 1044 1045 /* Note that we do not need to protect our mac_hash traversal with rcu, 1046 * since all modification code is protected by mdev->state_lock 1047 */ 1048 1049 /* find what to remove */ 1050 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1051 bucket = &priv->mac_hash[i]; 1052 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1053 found = false; 1054 netdev_for_each_uc_addr(ha, dev) { 1055 if (ether_addr_equal_64bits(entry->mac, 1056 ha->addr)) { 1057 found = true; 1058 break; 1059 } 1060 } 1061 1062 /* MAC address of the port is not in uc list */ 1063 if (ether_addr_equal_64bits(entry->mac, 1064 priv->current_mac)) 1065 found = true; 1066 1067 if (!found) { 1068 mac = mlx4_mac_to_u64(entry->mac); 1069 mlx4_en_uc_steer_release(priv, entry->mac, 1070 priv->base_qpn, 1071 entry->reg_id); 1072 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1073 1074 hlist_del_rcu(&entry->hlist); 1075 kfree_rcu(entry, rcu); 1076 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", 1077 entry->mac, priv->port); 1078 ++removed; 1079 } 1080 } 1081 } 1082 1083 /* if we didn't remove anything, there is no use in trying to add 1084 * again once we are in a forced promisc mode state 1085 */ 1086 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) 1087 return; 1088 1089 prev_flags = priv->flags; 1090 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 1091 1092 /* find what to add */ 1093 netdev_for_each_uc_addr(ha, dev) { 1094 found = false; 1095 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; 1096 hlist_for_each_entry(entry, bucket, hlist) { 1097 if (ether_addr_equal_64bits(entry->mac, ha->addr)) { 1098 found = true; 1099 break; 1100 } 1101 } 1102 1103 if (!found) { 1104 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1105 if (!entry) { 1106 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", 1107 ha->addr, priv->port); 1108 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1109 break; 1110 } 1111 mac = mlx4_mac_to_u64(ha->addr); 1112 memcpy(entry->mac, ha->addr, ETH_ALEN); 1113 err = mlx4_register_mac(mdev->dev, priv->port, mac); 1114 if (err < 0) { 1115 en_err(priv, "Failed registering MAC %pM on port %d: %d\n", 1116 ha->addr, priv->port, err); 1117 kfree(entry); 1118 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1119 break; 1120 } 1121 err = mlx4_en_uc_steer_add(priv, ha->addr, 1122 &priv->base_qpn, 1123 &entry->reg_id); 1124 if (err) { 1125 en_err(priv, "Failed adding MAC %pM on port %d: %d\n", 1126 ha->addr, priv->port, err); 1127 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1128 kfree(entry); 1129 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1130 break; 1131 } else { 1132 unsigned int mac_hash; 1133 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", 1134 ha->addr, priv->port); 1135 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; 1136 bucket = &priv->mac_hash[mac_hash]; 1137 hlist_add_head_rcu(&entry->hlist, bucket); 1138 } 1139 } 1140 } 1141 1142 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1143 en_warn(priv, "Forcing promiscuous mode on port:%d\n", 1144 priv->port); 1145 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1146 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", 1147 priv->port); 1148 } 1149 } 1150 1151 static void mlx4_en_do_set_rx_mode(struct work_struct *work) 1152 { 1153 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1154 rx_mode_task); 1155 struct mlx4_en_dev *mdev = priv->mdev; 1156 struct net_device *dev = priv->dev; 1157 1158 mutex_lock(&mdev->state_lock); 1159 if (!mdev->device_up) { 1160 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); 1161 goto out; 1162 } 1163 if (!priv->port_up) { 1164 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); 1165 goto out; 1166 } 1167 1168 if (!netif_carrier_ok(dev)) { 1169 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { 1170 if (priv->port_state.link_state) { 1171 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; 1172 netif_carrier_on(dev); 1173 en_dbg(LINK, priv, "Link Up\n"); 1174 } 1175 } 1176 } 1177 1178 if (dev->priv_flags & IFF_UNICAST_FLT) 1179 mlx4_en_do_uc_filter(priv, dev, mdev); 1180 1181 /* Promsicuous mode: disable all filters */ 1182 if ((dev->flags & IFF_PROMISC) || 1183 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { 1184 mlx4_en_set_promisc_mode(priv, mdev); 1185 goto out; 1186 } 1187 1188 /* Not in promiscuous mode */ 1189 if (priv->flags & MLX4_EN_FLAG_PROMISC) 1190 mlx4_en_clear_promisc_mode(priv, mdev); 1191 1192 mlx4_en_do_multicast(priv, dev, mdev); 1193 out: 1194 mutex_unlock(&mdev->state_lock); 1195 } 1196 1197 #ifdef CONFIG_NET_POLL_CONTROLLER 1198 static void mlx4_en_netpoll(struct net_device *dev) 1199 { 1200 struct mlx4_en_priv *priv = netdev_priv(dev); 1201 struct mlx4_en_cq *cq; 1202 int i; 1203 1204 for (i = 0; i < priv->rx_ring_num; i++) { 1205 cq = priv->rx_cq[i]; 1206 napi_schedule(&cq->napi); 1207 } 1208 } 1209 #endif 1210 1211 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv) 1212 { 1213 u64 reg_id; 1214 int err = 0; 1215 int *qpn = &priv->base_qpn; 1216 struct mlx4_mac_entry *entry; 1217 1218 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); 1219 if (err) 1220 return err; 1221 1222 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn, 1223 &priv->tunnel_reg_id); 1224 if (err) 1225 goto tunnel_err; 1226 1227 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1228 if (!entry) { 1229 err = -ENOMEM; 1230 goto alloc_err; 1231 } 1232 1233 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac)); 1234 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac)); 1235 entry->reg_id = reg_id; 1236 hlist_add_head_rcu(&entry->hlist, 1237 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); 1238 1239 return 0; 1240 1241 alloc_err: 1242 if (priv->tunnel_reg_id) 1243 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 1244 1245 tunnel_err: 1246 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 1247 return err; 1248 } 1249 1250 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv) 1251 { 1252 u64 mac; 1253 unsigned int i; 1254 int qpn = priv->base_qpn; 1255 struct hlist_head *bucket; 1256 struct hlist_node *tmp; 1257 struct mlx4_mac_entry *entry; 1258 1259 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1260 bucket = &priv->mac_hash[i]; 1261 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1262 mac = mlx4_mac_to_u64(entry->mac); 1263 en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n", 1264 entry->mac); 1265 mlx4_en_uc_steer_release(priv, entry->mac, 1266 qpn, entry->reg_id); 1267 1268 mlx4_unregister_mac(priv->mdev->dev, priv->port, mac); 1269 hlist_del_rcu(&entry->hlist); 1270 kfree_rcu(entry, rcu); 1271 } 1272 } 1273 1274 if (priv->tunnel_reg_id) { 1275 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 1276 priv->tunnel_reg_id = 0; 1277 } 1278 } 1279 1280 static void mlx4_en_tx_timeout(struct net_device *dev) 1281 { 1282 struct mlx4_en_priv *priv = netdev_priv(dev); 1283 struct mlx4_en_dev *mdev = priv->mdev; 1284 int i; 1285 1286 if (netif_msg_timer(priv)) 1287 en_warn(priv, "Tx timeout called on port:%d\n", priv->port); 1288 1289 for (i = 0; i < priv->tx_ring_num; i++) { 1290 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) 1291 continue; 1292 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", 1293 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn, 1294 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod); 1295 } 1296 1297 priv->port_stats.tx_timeout++; 1298 en_dbg(DRV, priv, "Scheduling watchdog\n"); 1299 queue_work(mdev->workqueue, &priv->watchdog_task); 1300 } 1301 1302 1303 static struct rtnl_link_stats64 * 1304 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 1305 { 1306 struct mlx4_en_priv *priv = netdev_priv(dev); 1307 1308 spin_lock_bh(&priv->stats_lock); 1309 netdev_stats_to_stats64(stats, &dev->stats); 1310 spin_unlock_bh(&priv->stats_lock); 1311 1312 return stats; 1313 } 1314 1315 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1316 { 1317 struct mlx4_en_cq *cq; 1318 int i; 1319 1320 /* If we haven't received a specific coalescing setting 1321 * (module param), we set the moderation parameters as follows: 1322 * - moder_cnt is set to the number of mtu sized packets to 1323 * satisfy our coalescing target. 1324 * - moder_time is set to a fixed value. 1325 */ 1326 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1327 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1328 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1329 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1330 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1331 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1332 1333 /* Setup cq moderation params */ 1334 for (i = 0; i < priv->rx_ring_num; i++) { 1335 cq = priv->rx_cq[i]; 1336 cq->moder_cnt = priv->rx_frames; 1337 cq->moder_time = priv->rx_usecs; 1338 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1339 priv->last_moder_packets[i] = 0; 1340 priv->last_moder_bytes[i] = 0; 1341 } 1342 1343 for (i = 0; i < priv->tx_ring_num; i++) { 1344 cq = priv->tx_cq[i]; 1345 cq->moder_cnt = priv->tx_frames; 1346 cq->moder_time = priv->tx_usecs; 1347 } 1348 1349 /* Reset auto-moderation params */ 1350 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1351 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1352 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1353 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1354 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1355 priv->adaptive_rx_coal = 1; 1356 priv->last_moder_jiffies = 0; 1357 priv->last_moder_tx_packets = 0; 1358 } 1359 1360 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1361 { 1362 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1363 struct mlx4_en_cq *cq; 1364 unsigned long packets; 1365 unsigned long rate; 1366 unsigned long avg_pkt_size; 1367 unsigned long rx_packets; 1368 unsigned long rx_bytes; 1369 unsigned long rx_pkt_diff; 1370 int moder_time; 1371 int ring, err; 1372 1373 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1374 return; 1375 1376 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1377 spin_lock_bh(&priv->stats_lock); 1378 rx_packets = priv->rx_ring[ring]->packets; 1379 rx_bytes = priv->rx_ring[ring]->bytes; 1380 spin_unlock_bh(&priv->stats_lock); 1381 1382 rx_pkt_diff = ((unsigned long) (rx_packets - 1383 priv->last_moder_packets[ring])); 1384 packets = rx_pkt_diff; 1385 rate = packets * HZ / period; 1386 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1387 priv->last_moder_bytes[ring])) / packets : 0; 1388 1389 /* Apply auto-moderation only when packet rate 1390 * exceeds a rate that it matters */ 1391 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1392 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1393 if (rate < priv->pkt_rate_low) 1394 moder_time = priv->rx_usecs_low; 1395 else if (rate > priv->pkt_rate_high) 1396 moder_time = priv->rx_usecs_high; 1397 else 1398 moder_time = (rate - priv->pkt_rate_low) * 1399 (priv->rx_usecs_high - priv->rx_usecs_low) / 1400 (priv->pkt_rate_high - priv->pkt_rate_low) + 1401 priv->rx_usecs_low; 1402 } else { 1403 moder_time = priv->rx_usecs_low; 1404 } 1405 1406 if (moder_time != priv->last_moder_time[ring]) { 1407 priv->last_moder_time[ring] = moder_time; 1408 cq = priv->rx_cq[ring]; 1409 cq->moder_time = moder_time; 1410 cq->moder_cnt = priv->rx_frames; 1411 err = mlx4_en_set_cq_moder(priv, cq); 1412 if (err) 1413 en_err(priv, "Failed modifying moderation for cq:%d\n", 1414 ring); 1415 } 1416 priv->last_moder_packets[ring] = rx_packets; 1417 priv->last_moder_bytes[ring] = rx_bytes; 1418 } 1419 1420 priv->last_moder_jiffies = jiffies; 1421 } 1422 1423 static void mlx4_en_do_get_stats(struct work_struct *work) 1424 { 1425 struct delayed_work *delay = to_delayed_work(work); 1426 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1427 stats_task); 1428 struct mlx4_en_dev *mdev = priv->mdev; 1429 int err; 1430 1431 mutex_lock(&mdev->state_lock); 1432 if (mdev->device_up) { 1433 if (priv->port_up) { 1434 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1435 if (err) 1436 en_dbg(HW, priv, "Could not update stats\n"); 1437 1438 mlx4_en_auto_moderation(priv); 1439 } 1440 1441 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1442 } 1443 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1444 mlx4_en_do_set_mac(priv, priv->current_mac); 1445 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1446 } 1447 mutex_unlock(&mdev->state_lock); 1448 } 1449 1450 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1451 * periodically 1452 */ 1453 static void mlx4_en_service_task(struct work_struct *work) 1454 { 1455 struct delayed_work *delay = to_delayed_work(work); 1456 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1457 service_task); 1458 struct mlx4_en_dev *mdev = priv->mdev; 1459 1460 mutex_lock(&mdev->state_lock); 1461 if (mdev->device_up) { 1462 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1463 mlx4_en_ptp_overflow_check(mdev); 1464 1465 mlx4_en_recover_from_oom(priv); 1466 queue_delayed_work(mdev->workqueue, &priv->service_task, 1467 SERVICE_TASK_DELAY); 1468 } 1469 mutex_unlock(&mdev->state_lock); 1470 } 1471 1472 static void mlx4_en_linkstate(struct work_struct *work) 1473 { 1474 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1475 linkstate_task); 1476 struct mlx4_en_dev *mdev = priv->mdev; 1477 int linkstate = priv->link_state; 1478 1479 mutex_lock(&mdev->state_lock); 1480 /* If observable port state changed set carrier state and 1481 * report to system log */ 1482 if (priv->last_link_state != linkstate) { 1483 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1484 en_info(priv, "Link Down\n"); 1485 netif_carrier_off(priv->dev); 1486 } else { 1487 en_info(priv, "Link Up\n"); 1488 netif_carrier_on(priv->dev); 1489 } 1490 } 1491 priv->last_link_state = linkstate; 1492 mutex_unlock(&mdev->state_lock); 1493 } 1494 1495 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1496 { 1497 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx]; 1498 int numa_node = priv->mdev->dev->numa_node; 1499 1500 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL)) 1501 return -ENOMEM; 1502 1503 cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node), 1504 ring->affinity_mask); 1505 return 0; 1506 } 1507 1508 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1509 { 1510 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask); 1511 } 1512 1513 int mlx4_en_start_port(struct net_device *dev) 1514 { 1515 struct mlx4_en_priv *priv = netdev_priv(dev); 1516 struct mlx4_en_dev *mdev = priv->mdev; 1517 struct mlx4_en_cq *cq; 1518 struct mlx4_en_tx_ring *tx_ring; 1519 int rx_index = 0; 1520 int tx_index = 0; 1521 int err = 0; 1522 int i; 1523 int j; 1524 u8 mc_list[16] = {0}; 1525 1526 if (priv->port_up) { 1527 en_dbg(DRV, priv, "start port called while port already up\n"); 1528 return 0; 1529 } 1530 1531 INIT_LIST_HEAD(&priv->mc_list); 1532 INIT_LIST_HEAD(&priv->curr_list); 1533 INIT_LIST_HEAD(&priv->ethtool_list); 1534 memset(&priv->ethtool_rules[0], 0, 1535 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1536 1537 /* Calculate Rx buf size */ 1538 dev->mtu = min(dev->mtu, priv->max_mtu); 1539 mlx4_en_calc_rx_buf(dev); 1540 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1541 1542 /* Configure rx cq's and rings */ 1543 err = mlx4_en_activate_rx_rings(priv); 1544 if (err) { 1545 en_err(priv, "Failed to activate RX rings\n"); 1546 return err; 1547 } 1548 for (i = 0; i < priv->rx_ring_num; i++) { 1549 cq = priv->rx_cq[i]; 1550 1551 err = mlx4_en_init_affinity_hint(priv, i); 1552 if (err) { 1553 en_err(priv, "Failed preparing IRQ affinity hint\n"); 1554 goto cq_err; 1555 } 1556 1557 err = mlx4_en_activate_cq(priv, cq, i); 1558 if (err) { 1559 en_err(priv, "Failed activating Rx CQ\n"); 1560 mlx4_en_free_affinity_hint(priv, i); 1561 goto cq_err; 1562 } 1563 1564 for (j = 0; j < cq->size; j++) { 1565 struct mlx4_cqe *cqe = NULL; 1566 1567 cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) + 1568 priv->cqe_factor; 1569 cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1570 } 1571 1572 err = mlx4_en_set_cq_moder(priv, cq); 1573 if (err) { 1574 en_err(priv, "Failed setting cq moderation parameters\n"); 1575 mlx4_en_deactivate_cq(priv, cq); 1576 mlx4_en_free_affinity_hint(priv, i); 1577 goto cq_err; 1578 } 1579 mlx4_en_arm_cq(priv, cq); 1580 priv->rx_ring[i]->cqn = cq->mcq.cqn; 1581 ++rx_index; 1582 } 1583 1584 /* Set qp number */ 1585 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1586 err = mlx4_en_get_qp(priv); 1587 if (err) { 1588 en_err(priv, "Failed getting eth qp\n"); 1589 goto cq_err; 1590 } 1591 mdev->mac_removed[priv->port] = 0; 1592 1593 priv->counter_index = 1594 mlx4_get_default_counter_index(mdev->dev, priv->port); 1595 1596 err = mlx4_en_config_rss_steer(priv); 1597 if (err) { 1598 en_err(priv, "Failed configuring rss steering\n"); 1599 goto mac_err; 1600 } 1601 1602 err = mlx4_en_create_drop_qp(priv); 1603 if (err) 1604 goto rss_err; 1605 1606 /* Configure tx cq's and rings */ 1607 for (i = 0; i < priv->tx_ring_num; i++) { 1608 /* Configure cq */ 1609 cq = priv->tx_cq[i]; 1610 err = mlx4_en_activate_cq(priv, cq, i); 1611 if (err) { 1612 en_err(priv, "Failed allocating Tx CQ\n"); 1613 goto tx_err; 1614 } 1615 err = mlx4_en_set_cq_moder(priv, cq); 1616 if (err) { 1617 en_err(priv, "Failed setting cq moderation parameters\n"); 1618 mlx4_en_deactivate_cq(priv, cq); 1619 goto tx_err; 1620 } 1621 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i); 1622 cq->buf->wqe_index = cpu_to_be16(0xffff); 1623 1624 /* Configure ring */ 1625 tx_ring = priv->tx_ring[i]; 1626 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, 1627 i / priv->num_tx_rings_p_up); 1628 if (err) { 1629 en_err(priv, "Failed allocating Tx ring\n"); 1630 mlx4_en_deactivate_cq(priv, cq); 1631 goto tx_err; 1632 } 1633 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1634 1635 /* Arm CQ for TX completions */ 1636 mlx4_en_arm_cq(priv, cq); 1637 1638 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1639 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1640 *((u32 *) (tx_ring->buf + j)) = 0xffffffff; 1641 ++tx_index; 1642 } 1643 1644 /* Configure port */ 1645 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1646 priv->rx_skb_size + ETH_FCS_LEN, 1647 priv->prof->tx_pause, 1648 priv->prof->tx_ppp, 1649 priv->prof->rx_pause, 1650 priv->prof->rx_ppp); 1651 if (err) { 1652 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1653 priv->port, err); 1654 goto tx_err; 1655 } 1656 /* Set default qp number */ 1657 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1658 if (err) { 1659 en_err(priv, "Failed setting default qp numbers\n"); 1660 goto tx_err; 1661 } 1662 1663 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 1664 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 1665 if (err) { 1666 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 1667 err); 1668 goto tx_err; 1669 } 1670 } 1671 1672 /* Init port */ 1673 en_dbg(HW, priv, "Initializing port\n"); 1674 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1675 if (err) { 1676 en_err(priv, "Failed Initializing port\n"); 1677 goto tx_err; 1678 } 1679 1680 /* Set Unicast and VXLAN steering rules */ 1681 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 && 1682 mlx4_en_set_rss_steer_rules(priv)) 1683 mlx4_warn(mdev, "Failed setting steering rules\n"); 1684 1685 /* Attach rx QP to bradcast address */ 1686 eth_broadcast_addr(&mc_list[10]); 1687 mc_list[5] = priv->port; /* needed for B0 steering support */ 1688 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1689 priv->port, 0, MLX4_PROT_ETH, 1690 &priv->broadcast_id)) 1691 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1692 1693 /* Must redo promiscuous mode setup. */ 1694 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1695 1696 /* Schedule multicast task to populate multicast list */ 1697 queue_work(mdev->workqueue, &priv->rx_mode_task); 1698 1699 #ifdef CONFIG_MLX4_EN_VXLAN 1700 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 1701 vxlan_get_rx_port(dev); 1702 #endif 1703 priv->port_up = true; 1704 netif_tx_start_all_queues(dev); 1705 netif_device_attach(dev); 1706 1707 return 0; 1708 1709 tx_err: 1710 while (tx_index--) { 1711 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]); 1712 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]); 1713 } 1714 mlx4_en_destroy_drop_qp(priv); 1715 rss_err: 1716 mlx4_en_release_rss_steer(priv); 1717 mac_err: 1718 mlx4_en_put_qp(priv); 1719 cq_err: 1720 while (rx_index--) { 1721 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); 1722 mlx4_en_free_affinity_hint(priv, rx_index); 1723 } 1724 for (i = 0; i < priv->rx_ring_num; i++) 1725 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1726 1727 return err; /* need to close devices */ 1728 } 1729 1730 1731 void mlx4_en_stop_port(struct net_device *dev, int detach) 1732 { 1733 struct mlx4_en_priv *priv = netdev_priv(dev); 1734 struct mlx4_en_dev *mdev = priv->mdev; 1735 struct mlx4_en_mc_list *mclist, *tmp; 1736 struct ethtool_flow_id *flow, *tmp_flow; 1737 int i; 1738 u8 mc_list[16] = {0}; 1739 1740 if (!priv->port_up) { 1741 en_dbg(DRV, priv, "stop port called while port already down\n"); 1742 return; 1743 } 1744 1745 /* close port*/ 1746 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1747 1748 /* Synchronize with tx routine */ 1749 netif_tx_lock_bh(dev); 1750 if (detach) 1751 netif_device_detach(dev); 1752 netif_tx_stop_all_queues(dev); 1753 netif_tx_unlock_bh(dev); 1754 1755 netif_tx_disable(dev); 1756 1757 /* Set port as not active */ 1758 priv->port_up = false; 1759 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 1760 1761 /* Promsicuous mode */ 1762 if (mdev->dev->caps.steering_mode == 1763 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1764 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | 1765 MLX4_EN_FLAG_MC_PROMISC); 1766 mlx4_flow_steer_promisc_remove(mdev->dev, 1767 priv->port, 1768 MLX4_FS_ALL_DEFAULT); 1769 mlx4_flow_steer_promisc_remove(mdev->dev, 1770 priv->port, 1771 MLX4_FS_MC_DEFAULT); 1772 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { 1773 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 1774 1775 /* Disable promiscouos mode */ 1776 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, 1777 priv->port); 1778 1779 /* Disable Multicast promisc */ 1780 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1781 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, 1782 priv->port); 1783 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1784 } 1785 } 1786 1787 /* Detach All multicasts */ 1788 eth_broadcast_addr(&mc_list[10]); 1789 mc_list[5] = priv->port; /* needed for B0 steering support */ 1790 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1791 MLX4_PROT_ETH, priv->broadcast_id); 1792 list_for_each_entry(mclist, &priv->curr_list, list) { 1793 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1794 mc_list[5] = priv->port; 1795 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, 1796 mc_list, MLX4_PROT_ETH, mclist->reg_id); 1797 if (mclist->tunnel_reg_id) 1798 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id); 1799 } 1800 mlx4_en_clear_list(dev); 1801 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1802 list_del(&mclist->list); 1803 kfree(mclist); 1804 } 1805 1806 /* Flush multicast filter */ 1807 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); 1808 1809 /* Remove flow steering rules for the port*/ 1810 if (mdev->dev->caps.steering_mode == 1811 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1812 ASSERT_RTNL(); 1813 list_for_each_entry_safe(flow, tmp_flow, 1814 &priv->ethtool_list, list) { 1815 mlx4_flow_detach(mdev->dev, flow->id); 1816 list_del(&flow->list); 1817 } 1818 } 1819 1820 mlx4_en_destroy_drop_qp(priv); 1821 1822 /* Free TX Rings */ 1823 for (i = 0; i < priv->tx_ring_num; i++) { 1824 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]); 1825 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]); 1826 } 1827 msleep(10); 1828 1829 for (i = 0; i < priv->tx_ring_num; i++) 1830 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]); 1831 1832 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 1833 mlx4_en_delete_rss_steer_rules(priv); 1834 1835 /* Free RSS qps */ 1836 mlx4_en_release_rss_steer(priv); 1837 1838 /* Unregister Mac address for the port */ 1839 mlx4_en_put_qp(priv); 1840 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN)) 1841 mdev->mac_removed[priv->port] = 1; 1842 1843 /* Free RX Rings */ 1844 for (i = 0; i < priv->rx_ring_num; i++) { 1845 struct mlx4_en_cq *cq = priv->rx_cq[i]; 1846 1847 napi_synchronize(&cq->napi); 1848 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1849 mlx4_en_deactivate_cq(priv, cq); 1850 1851 mlx4_en_free_affinity_hint(priv, i); 1852 } 1853 } 1854 1855 static void mlx4_en_restart(struct work_struct *work) 1856 { 1857 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1858 watchdog_task); 1859 struct mlx4_en_dev *mdev = priv->mdev; 1860 struct net_device *dev = priv->dev; 1861 1862 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1863 1864 rtnl_lock(); 1865 mutex_lock(&mdev->state_lock); 1866 if (priv->port_up) { 1867 mlx4_en_stop_port(dev, 1); 1868 if (mlx4_en_start_port(dev)) 1869 en_err(priv, "Failed restarting port %d\n", priv->port); 1870 } 1871 mutex_unlock(&mdev->state_lock); 1872 rtnl_unlock(); 1873 } 1874 1875 static void mlx4_en_clear_stats(struct net_device *dev) 1876 { 1877 struct mlx4_en_priv *priv = netdev_priv(dev); 1878 struct mlx4_en_dev *mdev = priv->mdev; 1879 int i; 1880 1881 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1882 en_dbg(HW, priv, "Failed dumping statistics\n"); 1883 1884 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1885 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1886 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1887 memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats)); 1888 memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats)); 1889 memset(&priv->rx_priority_flowstats, 0, 1890 sizeof(priv->rx_priority_flowstats)); 1891 memset(&priv->tx_priority_flowstats, 0, 1892 sizeof(priv->tx_priority_flowstats)); 1893 memset(&priv->pf_stats, 0, sizeof(priv->pf_stats)); 1894 1895 for (i = 0; i < priv->tx_ring_num; i++) { 1896 priv->tx_ring[i]->bytes = 0; 1897 priv->tx_ring[i]->packets = 0; 1898 priv->tx_ring[i]->tx_csum = 0; 1899 priv->tx_ring[i]->tx_dropped = 0; 1900 priv->tx_ring[i]->queue_stopped = 0; 1901 priv->tx_ring[i]->wake_queue = 0; 1902 priv->tx_ring[i]->tso_packets = 0; 1903 priv->tx_ring[i]->xmit_more = 0; 1904 } 1905 for (i = 0; i < priv->rx_ring_num; i++) { 1906 priv->rx_ring[i]->bytes = 0; 1907 priv->rx_ring[i]->packets = 0; 1908 priv->rx_ring[i]->csum_ok = 0; 1909 priv->rx_ring[i]->csum_none = 0; 1910 priv->rx_ring[i]->csum_complete = 0; 1911 } 1912 } 1913 1914 static int mlx4_en_open(struct net_device *dev) 1915 { 1916 struct mlx4_en_priv *priv = netdev_priv(dev); 1917 struct mlx4_en_dev *mdev = priv->mdev; 1918 int err = 0; 1919 1920 mutex_lock(&mdev->state_lock); 1921 1922 if (!mdev->device_up) { 1923 en_err(priv, "Cannot open - device down/disabled\n"); 1924 err = -EBUSY; 1925 goto out; 1926 } 1927 1928 /* Reset HW statistics and SW counters */ 1929 mlx4_en_clear_stats(dev); 1930 1931 err = mlx4_en_start_port(dev); 1932 if (err) 1933 en_err(priv, "Failed starting port:%d\n", priv->port); 1934 1935 out: 1936 mutex_unlock(&mdev->state_lock); 1937 return err; 1938 } 1939 1940 1941 static int mlx4_en_close(struct net_device *dev) 1942 { 1943 struct mlx4_en_priv *priv = netdev_priv(dev); 1944 struct mlx4_en_dev *mdev = priv->mdev; 1945 1946 en_dbg(IFDOWN, priv, "Close port called\n"); 1947 1948 mutex_lock(&mdev->state_lock); 1949 1950 mlx4_en_stop_port(dev, 0); 1951 netif_carrier_off(dev); 1952 1953 mutex_unlock(&mdev->state_lock); 1954 return 0; 1955 } 1956 1957 void mlx4_en_free_resources(struct mlx4_en_priv *priv) 1958 { 1959 int i; 1960 1961 #ifdef CONFIG_RFS_ACCEL 1962 priv->dev->rx_cpu_rmap = NULL; 1963 #endif 1964 1965 for (i = 0; i < priv->tx_ring_num; i++) { 1966 if (priv->tx_ring && priv->tx_ring[i]) 1967 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 1968 if (priv->tx_cq && priv->tx_cq[i]) 1969 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 1970 } 1971 1972 for (i = 0; i < priv->rx_ring_num; i++) { 1973 if (priv->rx_ring[i]) 1974 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 1975 priv->prof->rx_ring_size, priv->stride); 1976 if (priv->rx_cq[i]) 1977 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 1978 } 1979 1980 } 1981 1982 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 1983 { 1984 struct mlx4_en_port_profile *prof = priv->prof; 1985 int i; 1986 int node; 1987 1988 /* Create tx Rings */ 1989 for (i = 0; i < priv->tx_ring_num; i++) { 1990 node = cpu_to_node(i % num_online_cpus()); 1991 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 1992 prof->tx_ring_size, i, TX, node)) 1993 goto err; 1994 1995 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], 1996 prof->tx_ring_size, TXBB_SIZE, 1997 node, i)) 1998 goto err; 1999 } 2000 2001 /* Create rx Rings */ 2002 for (i = 0; i < priv->rx_ring_num; i++) { 2003 node = cpu_to_node(i % num_online_cpus()); 2004 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 2005 prof->rx_ring_size, i, RX, node)) 2006 goto err; 2007 2008 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 2009 prof->rx_ring_size, priv->stride, 2010 node)) 2011 goto err; 2012 } 2013 2014 #ifdef CONFIG_RFS_ACCEL 2015 priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port); 2016 #endif 2017 2018 return 0; 2019 2020 err: 2021 en_err(priv, "Failed to allocate NIC resources\n"); 2022 for (i = 0; i < priv->rx_ring_num; i++) { 2023 if (priv->rx_ring[i]) 2024 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2025 prof->rx_ring_size, 2026 priv->stride); 2027 if (priv->rx_cq[i]) 2028 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2029 } 2030 for (i = 0; i < priv->tx_ring_num; i++) { 2031 if (priv->tx_ring[i]) 2032 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2033 if (priv->tx_cq[i]) 2034 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2035 } 2036 return -ENOMEM; 2037 } 2038 2039 static void mlx4_en_shutdown(struct net_device *dev) 2040 { 2041 rtnl_lock(); 2042 netif_device_detach(dev); 2043 mlx4_en_close(dev); 2044 rtnl_unlock(); 2045 } 2046 2047 void mlx4_en_destroy_netdev(struct net_device *dev) 2048 { 2049 struct mlx4_en_priv *priv = netdev_priv(dev); 2050 struct mlx4_en_dev *mdev = priv->mdev; 2051 bool shutdown = mdev->dev->persist->interface_state & 2052 MLX4_INTERFACE_STATE_SHUTDOWN; 2053 2054 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2055 2056 /* Unregister device - this will close the port if it was up */ 2057 if (priv->registered) { 2058 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev, 2059 priv->port)); 2060 if (shutdown) 2061 mlx4_en_shutdown(dev); 2062 else 2063 unregister_netdev(dev); 2064 } 2065 2066 if (priv->allocated) 2067 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2068 2069 cancel_delayed_work(&priv->stats_task); 2070 cancel_delayed_work(&priv->service_task); 2071 /* flush any pending task for this netdev */ 2072 flush_workqueue(mdev->workqueue); 2073 2074 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2075 mlx4_en_remove_timestamp(mdev); 2076 2077 /* Detach the netdev so tasks would not attempt to access it */ 2078 mutex_lock(&mdev->state_lock); 2079 mdev->pndev[priv->port] = NULL; 2080 mdev->upper[priv->port] = NULL; 2081 mutex_unlock(&mdev->state_lock); 2082 2083 mlx4_en_free_resources(priv); 2084 2085 kfree(priv->tx_ring); 2086 kfree(priv->tx_cq); 2087 2088 if (!shutdown) 2089 free_netdev(dev); 2090 } 2091 2092 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2093 { 2094 struct mlx4_en_priv *priv = netdev_priv(dev); 2095 struct mlx4_en_dev *mdev = priv->mdev; 2096 int err = 0; 2097 2098 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2099 dev->mtu, new_mtu); 2100 2101 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 2102 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 2103 return -EPERM; 2104 } 2105 dev->mtu = new_mtu; 2106 2107 if (netif_running(dev)) { 2108 mutex_lock(&mdev->state_lock); 2109 if (!mdev->device_up) { 2110 /* NIC is probably restarting - let watchdog task reset 2111 * the port */ 2112 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2113 } else { 2114 mlx4_en_stop_port(dev, 1); 2115 err = mlx4_en_start_port(dev); 2116 if (err) { 2117 en_err(priv, "Failed restarting port:%d\n", 2118 priv->port); 2119 queue_work(mdev->workqueue, &priv->watchdog_task); 2120 } 2121 } 2122 mutex_unlock(&mdev->state_lock); 2123 } 2124 return 0; 2125 } 2126 2127 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2128 { 2129 struct mlx4_en_priv *priv = netdev_priv(dev); 2130 struct mlx4_en_dev *mdev = priv->mdev; 2131 struct hwtstamp_config config; 2132 2133 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2134 return -EFAULT; 2135 2136 /* reserved for future extensions */ 2137 if (config.flags) 2138 return -EINVAL; 2139 2140 /* device doesn't support time stamping */ 2141 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2142 return -EINVAL; 2143 2144 /* TX HW timestamp */ 2145 switch (config.tx_type) { 2146 case HWTSTAMP_TX_OFF: 2147 case HWTSTAMP_TX_ON: 2148 break; 2149 default: 2150 return -ERANGE; 2151 } 2152 2153 /* RX HW timestamp */ 2154 switch (config.rx_filter) { 2155 case HWTSTAMP_FILTER_NONE: 2156 break; 2157 case HWTSTAMP_FILTER_ALL: 2158 case HWTSTAMP_FILTER_SOME: 2159 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2160 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2161 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2162 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2163 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2164 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2165 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2166 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2167 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2168 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2169 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2170 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2171 config.rx_filter = HWTSTAMP_FILTER_ALL; 2172 break; 2173 default: 2174 return -ERANGE; 2175 } 2176 2177 if (mlx4_en_reset_config(dev, config, dev->features)) { 2178 config.tx_type = HWTSTAMP_TX_OFF; 2179 config.rx_filter = HWTSTAMP_FILTER_NONE; 2180 } 2181 2182 return copy_to_user(ifr->ifr_data, &config, 2183 sizeof(config)) ? -EFAULT : 0; 2184 } 2185 2186 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2187 { 2188 struct mlx4_en_priv *priv = netdev_priv(dev); 2189 2190 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2191 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2192 } 2193 2194 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2195 { 2196 switch (cmd) { 2197 case SIOCSHWTSTAMP: 2198 return mlx4_en_hwtstamp_set(dev, ifr); 2199 case SIOCGHWTSTAMP: 2200 return mlx4_en_hwtstamp_get(dev, ifr); 2201 default: 2202 return -EOPNOTSUPP; 2203 } 2204 } 2205 2206 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev, 2207 netdev_features_t features) 2208 { 2209 struct mlx4_en_priv *en_priv = netdev_priv(netdev); 2210 struct mlx4_en_dev *mdev = en_priv->mdev; 2211 2212 /* Since there is no support for separate RX C-TAG/S-TAG vlan accel 2213 * enable/disable make sure S-TAG flag is always in same state as 2214 * C-TAG. 2215 */ 2216 if (features & NETIF_F_HW_VLAN_CTAG_RX && 2217 !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 2218 features |= NETIF_F_HW_VLAN_STAG_RX; 2219 else 2220 features &= ~NETIF_F_HW_VLAN_STAG_RX; 2221 2222 return features; 2223 } 2224 2225 static int mlx4_en_set_features(struct net_device *netdev, 2226 netdev_features_t features) 2227 { 2228 struct mlx4_en_priv *priv = netdev_priv(netdev); 2229 bool reset = false; 2230 int ret = 0; 2231 2232 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) { 2233 en_info(priv, "Turn %s RX-FCS\n", 2234 (features & NETIF_F_RXFCS) ? "ON" : "OFF"); 2235 reset = true; 2236 } 2237 2238 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) { 2239 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0; 2240 2241 en_info(priv, "Turn %s RX-ALL\n", 2242 ignore_fcs_value ? "ON" : "OFF"); 2243 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev, 2244 priv->port, ignore_fcs_value); 2245 if (ret) 2246 return ret; 2247 } 2248 2249 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 2250 en_info(priv, "Turn %s RX vlan strip offload\n", 2251 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF"); 2252 reset = true; 2253 } 2254 2255 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX)) 2256 en_info(priv, "Turn %s TX vlan strip offload\n", 2257 (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF"); 2258 2259 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX)) 2260 en_info(priv, "Turn %s TX S-VLAN strip offload\n", 2261 (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF"); 2262 2263 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) { 2264 en_info(priv, "Turn %s loopback\n", 2265 (features & NETIF_F_LOOPBACK) ? "ON" : "OFF"); 2266 mlx4_en_update_loopback_state(netdev, features); 2267 } 2268 2269 if (reset) { 2270 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config, 2271 features); 2272 if (ret) 2273 return ret; 2274 } 2275 2276 return 0; 2277 } 2278 2279 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2280 { 2281 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2282 struct mlx4_en_dev *mdev = en_priv->mdev; 2283 u64 mac_u64 = mlx4_mac_to_u64(mac); 2284 2285 if (is_multicast_ether_addr(mac)) 2286 return -EINVAL; 2287 2288 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2289 } 2290 2291 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) 2292 { 2293 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2294 struct mlx4_en_dev *mdev = en_priv->mdev; 2295 2296 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos); 2297 } 2298 2299 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, 2300 int max_tx_rate) 2301 { 2302 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2303 struct mlx4_en_dev *mdev = en_priv->mdev; 2304 2305 return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate, 2306 max_tx_rate); 2307 } 2308 2309 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2310 { 2311 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2312 struct mlx4_en_dev *mdev = en_priv->mdev; 2313 2314 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2315 } 2316 2317 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2318 { 2319 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2320 struct mlx4_en_dev *mdev = en_priv->mdev; 2321 2322 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2323 } 2324 2325 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2326 { 2327 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2328 struct mlx4_en_dev *mdev = en_priv->mdev; 2329 2330 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2331 } 2332 2333 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf, 2334 struct ifla_vf_stats *vf_stats) 2335 { 2336 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2337 struct mlx4_en_dev *mdev = en_priv->mdev; 2338 2339 return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats); 2340 } 2341 2342 #define PORT_ID_BYTE_LEN 8 2343 static int mlx4_en_get_phys_port_id(struct net_device *dev, 2344 struct netdev_phys_item_id *ppid) 2345 { 2346 struct mlx4_en_priv *priv = netdev_priv(dev); 2347 struct mlx4_dev *mdev = priv->mdev->dev; 2348 int i; 2349 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2350 2351 if (!phys_port_id) 2352 return -EOPNOTSUPP; 2353 2354 ppid->id_len = sizeof(phys_port_id); 2355 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2356 ppid->id[i] = phys_port_id & 0xff; 2357 phys_port_id >>= 8; 2358 } 2359 return 0; 2360 } 2361 2362 #ifdef CONFIG_MLX4_EN_VXLAN 2363 static void mlx4_en_add_vxlan_offloads(struct work_struct *work) 2364 { 2365 int ret; 2366 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2367 vxlan_add_task); 2368 2369 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port); 2370 if (ret) 2371 goto out; 2372 2373 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2374 VXLAN_STEER_BY_OUTER_MAC, 1); 2375 out: 2376 if (ret) { 2377 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2378 return; 2379 } 2380 2381 /* set offloads */ 2382 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 2383 NETIF_F_RXCSUM | 2384 NETIF_F_TSO | NETIF_F_TSO6 | 2385 NETIF_F_GSO_UDP_TUNNEL | 2386 NETIF_F_GSO_UDP_TUNNEL_CSUM | 2387 NETIF_F_GSO_PARTIAL; 2388 } 2389 2390 static void mlx4_en_del_vxlan_offloads(struct work_struct *work) 2391 { 2392 int ret; 2393 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2394 vxlan_del_task); 2395 /* unset offloads */ 2396 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 2397 NETIF_F_RXCSUM | 2398 NETIF_F_TSO | NETIF_F_TSO6 | 2399 NETIF_F_GSO_UDP_TUNNEL | 2400 NETIF_F_GSO_UDP_TUNNEL_CSUM | 2401 NETIF_F_GSO_PARTIAL); 2402 2403 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2404 VXLAN_STEER_BY_OUTER_MAC, 0); 2405 if (ret) 2406 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2407 2408 priv->vxlan_port = 0; 2409 } 2410 2411 static void mlx4_en_add_vxlan_port(struct net_device *dev, 2412 sa_family_t sa_family, __be16 port) 2413 { 2414 struct mlx4_en_priv *priv = netdev_priv(dev); 2415 __be16 current_port; 2416 2417 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2418 return; 2419 2420 if (sa_family == AF_INET6) 2421 return; 2422 2423 current_port = priv->vxlan_port; 2424 if (current_port && current_port != port) { 2425 en_warn(priv, "vxlan port %d configured, can't add port %d\n", 2426 ntohs(current_port), ntohs(port)); 2427 return; 2428 } 2429 2430 priv->vxlan_port = port; 2431 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task); 2432 } 2433 2434 static void mlx4_en_del_vxlan_port(struct net_device *dev, 2435 sa_family_t sa_family, __be16 port) 2436 { 2437 struct mlx4_en_priv *priv = netdev_priv(dev); 2438 __be16 current_port; 2439 2440 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2441 return; 2442 2443 if (sa_family == AF_INET6) 2444 return; 2445 2446 current_port = priv->vxlan_port; 2447 if (current_port != port) { 2448 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port)); 2449 return; 2450 } 2451 2452 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task); 2453 } 2454 2455 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb, 2456 struct net_device *dev, 2457 netdev_features_t features) 2458 { 2459 features = vlan_features_check(skb, features); 2460 features = vxlan_features_check(skb, features); 2461 2462 /* The ConnectX-3 doesn't support outer IPv6 checksums but it does 2463 * support inner IPv6 checksums and segmentation so we need to 2464 * strip that feature if this is an IPv6 encapsulated frame. 2465 */ 2466 if (skb->encapsulation && 2467 (skb->ip_summed == CHECKSUM_PARTIAL)) { 2468 struct mlx4_en_priv *priv = netdev_priv(dev); 2469 2470 if (!priv->vxlan_port || 2471 (ip_hdr(skb)->version != 4) || 2472 (udp_hdr(skb)->dest != priv->vxlan_port)) 2473 features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); 2474 } 2475 2476 return features; 2477 } 2478 #endif 2479 2480 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate) 2481 { 2482 struct mlx4_en_priv *priv = netdev_priv(dev); 2483 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index]; 2484 struct mlx4_update_qp_params params; 2485 int err; 2486 2487 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT)) 2488 return -EOPNOTSUPP; 2489 2490 /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */ 2491 if (maxrate >> 12) { 2492 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS; 2493 params.rate_val = maxrate / 1000; 2494 } else if (maxrate) { 2495 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS; 2496 params.rate_val = maxrate; 2497 } else { /* zero serves to revoke the QP rate-limitation */ 2498 params.rate_unit = 0; 2499 params.rate_val = 0; 2500 } 2501 2502 err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT, 2503 ¶ms); 2504 return err; 2505 } 2506 2507 static const struct net_device_ops mlx4_netdev_ops = { 2508 .ndo_open = mlx4_en_open, 2509 .ndo_stop = mlx4_en_close, 2510 .ndo_start_xmit = mlx4_en_xmit, 2511 .ndo_select_queue = mlx4_en_select_queue, 2512 .ndo_get_stats64 = mlx4_en_get_stats64, 2513 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2514 .ndo_set_mac_address = mlx4_en_set_mac, 2515 .ndo_validate_addr = eth_validate_addr, 2516 .ndo_change_mtu = mlx4_en_change_mtu, 2517 .ndo_do_ioctl = mlx4_en_ioctl, 2518 .ndo_tx_timeout = mlx4_en_tx_timeout, 2519 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2520 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2521 #ifdef CONFIG_NET_POLL_CONTROLLER 2522 .ndo_poll_controller = mlx4_en_netpoll, 2523 #endif 2524 .ndo_set_features = mlx4_en_set_features, 2525 .ndo_fix_features = mlx4_en_fix_features, 2526 .ndo_setup_tc = __mlx4_en_setup_tc, 2527 #ifdef CONFIG_RFS_ACCEL 2528 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2529 #endif 2530 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2531 #ifdef CONFIG_MLX4_EN_VXLAN 2532 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2533 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2534 .ndo_features_check = mlx4_en_features_check, 2535 #endif 2536 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2537 }; 2538 2539 static const struct net_device_ops mlx4_netdev_ops_master = { 2540 .ndo_open = mlx4_en_open, 2541 .ndo_stop = mlx4_en_close, 2542 .ndo_start_xmit = mlx4_en_xmit, 2543 .ndo_select_queue = mlx4_en_select_queue, 2544 .ndo_get_stats64 = mlx4_en_get_stats64, 2545 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2546 .ndo_set_mac_address = mlx4_en_set_mac, 2547 .ndo_validate_addr = eth_validate_addr, 2548 .ndo_change_mtu = mlx4_en_change_mtu, 2549 .ndo_tx_timeout = mlx4_en_tx_timeout, 2550 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2551 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2552 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2553 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2554 .ndo_set_vf_rate = mlx4_en_set_vf_rate, 2555 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2556 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2557 .ndo_get_vf_stats = mlx4_en_get_vf_stats, 2558 .ndo_get_vf_config = mlx4_en_get_vf_config, 2559 #ifdef CONFIG_NET_POLL_CONTROLLER 2560 .ndo_poll_controller = mlx4_en_netpoll, 2561 #endif 2562 .ndo_set_features = mlx4_en_set_features, 2563 .ndo_fix_features = mlx4_en_fix_features, 2564 .ndo_setup_tc = __mlx4_en_setup_tc, 2565 #ifdef CONFIG_RFS_ACCEL 2566 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2567 #endif 2568 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2569 #ifdef CONFIG_MLX4_EN_VXLAN 2570 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2571 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2572 .ndo_features_check = mlx4_en_features_check, 2573 #endif 2574 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2575 }; 2576 2577 struct mlx4_en_bond { 2578 struct work_struct work; 2579 struct mlx4_en_priv *priv; 2580 int is_bonded; 2581 struct mlx4_port_map port_map; 2582 }; 2583 2584 static void mlx4_en_bond_work(struct work_struct *work) 2585 { 2586 struct mlx4_en_bond *bond = container_of(work, 2587 struct mlx4_en_bond, 2588 work); 2589 int err = 0; 2590 struct mlx4_dev *dev = bond->priv->mdev->dev; 2591 2592 if (bond->is_bonded) { 2593 if (!mlx4_is_bonded(dev)) { 2594 err = mlx4_bond(dev); 2595 if (err) 2596 en_err(bond->priv, "Fail to bond device\n"); 2597 } 2598 if (!err) { 2599 err = mlx4_port_map_set(dev, &bond->port_map); 2600 if (err) 2601 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n", 2602 bond->port_map.port1, 2603 bond->port_map.port2, 2604 err); 2605 } 2606 } else if (mlx4_is_bonded(dev)) { 2607 err = mlx4_unbond(dev); 2608 if (err) 2609 en_err(bond->priv, "Fail to unbond device\n"); 2610 } 2611 dev_put(bond->priv->dev); 2612 kfree(bond); 2613 } 2614 2615 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded, 2616 u8 v2p_p1, u8 v2p_p2) 2617 { 2618 struct mlx4_en_bond *bond = NULL; 2619 2620 bond = kzalloc(sizeof(*bond), GFP_ATOMIC); 2621 if (!bond) 2622 return -ENOMEM; 2623 2624 INIT_WORK(&bond->work, mlx4_en_bond_work); 2625 bond->priv = priv; 2626 bond->is_bonded = is_bonded; 2627 bond->port_map.port1 = v2p_p1; 2628 bond->port_map.port2 = v2p_p2; 2629 dev_hold(priv->dev); 2630 queue_work(priv->mdev->workqueue, &bond->work); 2631 return 0; 2632 } 2633 2634 int mlx4_en_netdev_event(struct notifier_block *this, 2635 unsigned long event, void *ptr) 2636 { 2637 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 2638 u8 port = 0; 2639 struct mlx4_en_dev *mdev; 2640 struct mlx4_dev *dev; 2641 int i, num_eth_ports = 0; 2642 bool do_bond = true; 2643 struct mlx4_en_priv *priv; 2644 u8 v2p_port1 = 0; 2645 u8 v2p_port2 = 0; 2646 2647 if (!net_eq(dev_net(ndev), &init_net)) 2648 return NOTIFY_DONE; 2649 2650 mdev = container_of(this, struct mlx4_en_dev, nb); 2651 dev = mdev->dev; 2652 2653 /* Go into this mode only when two network devices set on two ports 2654 * of the same mlx4 device are slaves of the same bonding master 2655 */ 2656 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { 2657 ++num_eth_ports; 2658 if (!port && (mdev->pndev[i] == ndev)) 2659 port = i; 2660 mdev->upper[i] = mdev->pndev[i] ? 2661 netdev_master_upper_dev_get(mdev->pndev[i]) : NULL; 2662 /* condition not met: network device is a slave */ 2663 if (!mdev->upper[i]) 2664 do_bond = false; 2665 if (num_eth_ports < 2) 2666 continue; 2667 /* condition not met: same master */ 2668 if (mdev->upper[i] != mdev->upper[i-1]) 2669 do_bond = false; 2670 } 2671 /* condition not met: 2 salves */ 2672 do_bond = (num_eth_ports == 2) ? do_bond : false; 2673 2674 /* handle only events that come with enough info */ 2675 if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port) 2676 return NOTIFY_DONE; 2677 2678 priv = netdev_priv(ndev); 2679 if (do_bond) { 2680 struct netdev_notifier_bonding_info *notifier_info = ptr; 2681 struct netdev_bonding_info *bonding_info = 2682 ¬ifier_info->bonding_info; 2683 2684 /* required mode 1, 2 or 4 */ 2685 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) && 2686 (bonding_info->master.bond_mode != BOND_MODE_XOR) && 2687 (bonding_info->master.bond_mode != BOND_MODE_8023AD)) 2688 do_bond = false; 2689 2690 /* require exactly 2 slaves */ 2691 if (bonding_info->master.num_slaves != 2) 2692 do_bond = false; 2693 2694 /* calc v2p */ 2695 if (do_bond) { 2696 if (bonding_info->master.bond_mode == 2697 BOND_MODE_ACTIVEBACKUP) { 2698 /* in active-backup mode virtual ports are 2699 * mapped to the physical port of the active 2700 * slave */ 2701 if (bonding_info->slave.state == 2702 BOND_STATE_BACKUP) { 2703 if (port == 1) { 2704 v2p_port1 = 2; 2705 v2p_port2 = 2; 2706 } else { 2707 v2p_port1 = 1; 2708 v2p_port2 = 1; 2709 } 2710 } else { /* BOND_STATE_ACTIVE */ 2711 if (port == 1) { 2712 v2p_port1 = 1; 2713 v2p_port2 = 1; 2714 } else { 2715 v2p_port1 = 2; 2716 v2p_port2 = 2; 2717 } 2718 } 2719 } else { /* Active-Active */ 2720 /* in active-active mode a virtual port is 2721 * mapped to the native physical port if and only 2722 * if the physical port is up */ 2723 __s8 link = bonding_info->slave.link; 2724 2725 if (port == 1) 2726 v2p_port2 = 2; 2727 else 2728 v2p_port1 = 1; 2729 if ((link == BOND_LINK_UP) || 2730 (link == BOND_LINK_FAIL)) { 2731 if (port == 1) 2732 v2p_port1 = 1; 2733 else 2734 v2p_port2 = 2; 2735 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */ 2736 if (port == 1) 2737 v2p_port1 = 2; 2738 else 2739 v2p_port2 = 1; 2740 } 2741 } 2742 } 2743 } 2744 2745 mlx4_en_queue_bond_work(priv, do_bond, 2746 v2p_port1, v2p_port2); 2747 2748 return NOTIFY_DONE; 2749 } 2750 2751 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev, 2752 struct mlx4_en_stats_bitmap *stats_bitmap, 2753 u8 rx_ppp, u8 rx_pause, 2754 u8 tx_ppp, u8 tx_pause) 2755 { 2756 int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS; 2757 2758 if (!mlx4_is_slave(dev) && 2759 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) { 2760 mutex_lock(&stats_bitmap->mutex); 2761 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS); 2762 2763 if (rx_ppp) 2764 bitmap_set(stats_bitmap->bitmap, last_i, 2765 NUM_FLOW_PRIORITY_STATS_RX); 2766 last_i += NUM_FLOW_PRIORITY_STATS_RX; 2767 2768 if (rx_pause && !(rx_ppp)) 2769 bitmap_set(stats_bitmap->bitmap, last_i, 2770 NUM_FLOW_STATS_RX); 2771 last_i += NUM_FLOW_STATS_RX; 2772 2773 if (tx_ppp) 2774 bitmap_set(stats_bitmap->bitmap, last_i, 2775 NUM_FLOW_PRIORITY_STATS_TX); 2776 last_i += NUM_FLOW_PRIORITY_STATS_TX; 2777 2778 if (tx_pause && !(tx_ppp)) 2779 bitmap_set(stats_bitmap->bitmap, last_i, 2780 NUM_FLOW_STATS_TX); 2781 last_i += NUM_FLOW_STATS_TX; 2782 2783 mutex_unlock(&stats_bitmap->mutex); 2784 } 2785 } 2786 2787 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev, 2788 struct mlx4_en_stats_bitmap *stats_bitmap, 2789 u8 rx_ppp, u8 rx_pause, 2790 u8 tx_ppp, u8 tx_pause) 2791 { 2792 int last_i = 0; 2793 2794 mutex_init(&stats_bitmap->mutex); 2795 bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS); 2796 2797 if (mlx4_is_slave(dev)) { 2798 bitmap_set(stats_bitmap->bitmap, last_i + 2799 MLX4_FIND_NETDEV_STAT(rx_packets), 1); 2800 bitmap_set(stats_bitmap->bitmap, last_i + 2801 MLX4_FIND_NETDEV_STAT(tx_packets), 1); 2802 bitmap_set(stats_bitmap->bitmap, last_i + 2803 MLX4_FIND_NETDEV_STAT(rx_bytes), 1); 2804 bitmap_set(stats_bitmap->bitmap, last_i + 2805 MLX4_FIND_NETDEV_STAT(tx_bytes), 1); 2806 bitmap_set(stats_bitmap->bitmap, last_i + 2807 MLX4_FIND_NETDEV_STAT(rx_dropped), 1); 2808 bitmap_set(stats_bitmap->bitmap, last_i + 2809 MLX4_FIND_NETDEV_STAT(tx_dropped), 1); 2810 } else { 2811 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS); 2812 } 2813 last_i += NUM_MAIN_STATS; 2814 2815 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS); 2816 last_i += NUM_PORT_STATS; 2817 2818 if (mlx4_is_master(dev)) 2819 bitmap_set(stats_bitmap->bitmap, last_i, 2820 NUM_PF_STATS); 2821 last_i += NUM_PF_STATS; 2822 2823 mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap, 2824 rx_ppp, rx_pause, 2825 tx_ppp, tx_pause); 2826 last_i += NUM_FLOW_STATS; 2827 2828 if (!mlx4_is_slave(dev)) 2829 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS); 2830 } 2831 2832 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 2833 struct mlx4_en_port_profile *prof) 2834 { 2835 struct net_device *dev; 2836 struct mlx4_en_priv *priv; 2837 int i; 2838 int err; 2839 2840 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 2841 MAX_TX_RINGS, MAX_RX_RINGS); 2842 if (dev == NULL) 2843 return -ENOMEM; 2844 2845 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 2846 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 2847 2848 SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev); 2849 dev->dev_port = port - 1; 2850 2851 /* 2852 * Initialize driver private data 2853 */ 2854 2855 priv = netdev_priv(dev); 2856 memset(priv, 0, sizeof(struct mlx4_en_priv)); 2857 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 2858 spin_lock_init(&priv->stats_lock); 2859 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 2860 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 2861 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 2862 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 2863 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 2864 #ifdef CONFIG_MLX4_EN_VXLAN 2865 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads); 2866 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads); 2867 #endif 2868 #ifdef CONFIG_RFS_ACCEL 2869 INIT_LIST_HEAD(&priv->filters); 2870 spin_lock_init(&priv->filters_lock); 2871 #endif 2872 2873 priv->dev = dev; 2874 priv->mdev = mdev; 2875 priv->ddev = &mdev->pdev->dev; 2876 priv->prof = prof; 2877 priv->port = port; 2878 priv->port_up = false; 2879 priv->flags = prof->flags; 2880 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME; 2881 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 2882 MLX4_WQE_CTRL_SOLICITED); 2883 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 2884 priv->tx_ring_num = prof->tx_ring_num; 2885 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK; 2886 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key)); 2887 2888 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 2889 GFP_KERNEL); 2890 if (!priv->tx_ring) { 2891 err = -ENOMEM; 2892 goto out; 2893 } 2894 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 2895 GFP_KERNEL); 2896 if (!priv->tx_cq) { 2897 err = -ENOMEM; 2898 goto out; 2899 } 2900 priv->rx_ring_num = prof->rx_ring_num; 2901 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 2902 priv->cqe_size = mdev->dev->caps.cqe_size; 2903 priv->mac_index = -1; 2904 priv->msg_enable = MLX4_EN_MSG_LEVEL; 2905 #ifdef CONFIG_MLX4_EN_DCB 2906 if (!mlx4_is_slave(priv->mdev->dev)) { 2907 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) { 2908 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 2909 } else { 2910 en_info(priv, "enabling only PFC DCB ops\n"); 2911 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 2912 } 2913 } 2914 #endif 2915 2916 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 2917 INIT_HLIST_HEAD(&priv->mac_hash[i]); 2918 2919 /* Query for default mac and max mtu */ 2920 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 2921 2922 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] & 2923 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP) 2924 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP; 2925 2926 /* Set default MAC */ 2927 dev->addr_len = ETH_ALEN; 2928 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 2929 if (!is_valid_ether_addr(dev->dev_addr)) { 2930 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 2931 priv->port, dev->dev_addr); 2932 err = -EINVAL; 2933 goto out; 2934 } else if (mlx4_is_slave(priv->mdev->dev) && 2935 (priv->mdev->dev->port_random_macs & 1 << priv->port)) { 2936 /* Random MAC was assigned in mlx4_slave_cap 2937 * in mlx4_core module 2938 */ 2939 dev->addr_assign_type |= NET_ADDR_RANDOM; 2940 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 2941 } 2942 2943 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac)); 2944 2945 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2946 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2947 err = mlx4_en_alloc_resources(priv); 2948 if (err) 2949 goto out; 2950 2951 /* Initialize time stamping config */ 2952 priv->hwtstamp_config.flags = 0; 2953 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 2954 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 2955 2956 /* Allocate page for receive rings */ 2957 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 2958 MLX4_EN_PAGE_SIZE); 2959 if (err) { 2960 en_err(priv, "Failed to allocate page for rx qps\n"); 2961 goto out; 2962 } 2963 priv->allocated = 1; 2964 2965 /* 2966 * Initialize netdev entry points 2967 */ 2968 if (mlx4_is_master(priv->mdev->dev)) 2969 dev->netdev_ops = &mlx4_netdev_ops_master; 2970 else 2971 dev->netdev_ops = &mlx4_netdev_ops; 2972 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 2973 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 2974 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 2975 2976 dev->ethtool_ops = &mlx4_en_ethtool_ops; 2977 2978 /* 2979 * Set driver features 2980 */ 2981 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2982 if (mdev->LSO_support) 2983 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2984 2985 dev->vlan_features = dev->hw_features; 2986 2987 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 2988 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 2989 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 2990 NETIF_F_HW_VLAN_CTAG_FILTER; 2991 dev->hw_features |= NETIF_F_LOOPBACK | 2992 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 2993 2994 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) { 2995 dev->features |= NETIF_F_HW_VLAN_STAG_RX | 2996 NETIF_F_HW_VLAN_STAG_FILTER; 2997 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX; 2998 } 2999 3000 if (mlx4_is_slave(mdev->dev)) { 3001 int phv; 3002 3003 err = get_phv_bit(mdev->dev, port, &phv); 3004 if (!err && phv) { 3005 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 3006 priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV; 3007 } 3008 } else { 3009 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN && 3010 !(mdev->dev->caps.flags2 & 3011 MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 3012 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 3013 } 3014 3015 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) 3016 dev->hw_features |= NETIF_F_RXFCS; 3017 3018 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS) 3019 dev->hw_features |= NETIF_F_RXALL; 3020 3021 if (mdev->dev->caps.steering_mode == 3022 MLX4_STEERING_MODE_DEVICE_MANAGED && 3023 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC) 3024 dev->hw_features |= NETIF_F_NTUPLE; 3025 3026 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 3027 dev->priv_flags |= IFF_UNICAST_FLT; 3028 3029 /* Setting a default hash function value */ 3030 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) { 3031 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 3032 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) { 3033 priv->rss_hash_fn = ETH_RSS_HASH_XOR; 3034 } else { 3035 en_warn(priv, 3036 "No RSS hash capabilities exposed, using Toeplitz\n"); 3037 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 3038 } 3039 3040 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 3041 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL | 3042 NETIF_F_GSO_UDP_TUNNEL_CSUM | 3043 NETIF_F_GSO_PARTIAL; 3044 dev->features |= NETIF_F_GSO_UDP_TUNNEL | 3045 NETIF_F_GSO_UDP_TUNNEL_CSUM | 3046 NETIF_F_GSO_PARTIAL; 3047 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM; 3048 } 3049 3050 mdev->pndev[port] = dev; 3051 mdev->upper[port] = NULL; 3052 3053 netif_carrier_off(dev); 3054 mlx4_en_set_default_moderation(priv); 3055 3056 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 3057 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 3058 3059 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 3060 3061 /* Configure port */ 3062 mlx4_en_calc_rx_buf(dev); 3063 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 3064 priv->rx_skb_size + ETH_FCS_LEN, 3065 prof->tx_pause, prof->tx_ppp, 3066 prof->rx_pause, prof->rx_ppp); 3067 if (err) { 3068 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 3069 priv->port, err); 3070 goto out; 3071 } 3072 3073 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 3074 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 3075 if (err) { 3076 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 3077 err); 3078 goto out; 3079 } 3080 } 3081 3082 /* Init port */ 3083 en_warn(priv, "Initializing port\n"); 3084 err = mlx4_INIT_PORT(mdev->dev, priv->port); 3085 if (err) { 3086 en_err(priv, "Failed Initializing port\n"); 3087 goto out; 3088 } 3089 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 3090 3091 /* Initialize time stamp mechanism */ 3092 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 3093 mlx4_en_init_timestamp(mdev); 3094 3095 queue_delayed_work(mdev->workqueue, &priv->service_task, 3096 SERVICE_TASK_DELAY); 3097 3098 mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap, 3099 mdev->profile.prof[priv->port].rx_ppp, 3100 mdev->profile.prof[priv->port].rx_pause, 3101 mdev->profile.prof[priv->port].tx_ppp, 3102 mdev->profile.prof[priv->port].tx_pause); 3103 3104 err = register_netdev(dev); 3105 if (err) { 3106 en_err(priv, "Netdev registration failed for port %d\n", port); 3107 goto out; 3108 } 3109 3110 priv->registered = 1; 3111 devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port), 3112 dev); 3113 3114 return 0; 3115 3116 out: 3117 mlx4_en_destroy_netdev(dev); 3118 return err; 3119 } 3120 3121 int mlx4_en_reset_config(struct net_device *dev, 3122 struct hwtstamp_config ts_config, 3123 netdev_features_t features) 3124 { 3125 struct mlx4_en_priv *priv = netdev_priv(dev); 3126 struct mlx4_en_dev *mdev = priv->mdev; 3127 int port_up = 0; 3128 int err = 0; 3129 3130 if (priv->hwtstamp_config.tx_type == ts_config.tx_type && 3131 priv->hwtstamp_config.rx_filter == ts_config.rx_filter && 3132 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3133 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) 3134 return 0; /* Nothing to change */ 3135 3136 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3137 (features & NETIF_F_HW_VLAN_CTAG_RX) && 3138 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) { 3139 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n"); 3140 return -EINVAL; 3141 } 3142 3143 mutex_lock(&mdev->state_lock); 3144 if (priv->port_up) { 3145 port_up = 1; 3146 mlx4_en_stop_port(dev, 1); 3147 } 3148 3149 mlx4_en_free_resources(priv); 3150 3151 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n", 3152 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX)); 3153 3154 priv->hwtstamp_config.tx_type = ts_config.tx_type; 3155 priv->hwtstamp_config.rx_filter = ts_config.rx_filter; 3156 3157 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 3158 if (features & NETIF_F_HW_VLAN_CTAG_RX) 3159 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3160 else 3161 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3162 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) { 3163 /* RX time-stamping is OFF, update the RX vlan offload 3164 * to the latest wanted state 3165 */ 3166 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX) 3167 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3168 else 3169 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3170 } 3171 3172 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) { 3173 if (features & NETIF_F_RXFCS) 3174 dev->features |= NETIF_F_RXFCS; 3175 else 3176 dev->features &= ~NETIF_F_RXFCS; 3177 } 3178 3179 /* RX vlan offload and RX time-stamping can't co-exist ! 3180 * Regardless of the caller's choice, 3181 * Turn Off RX vlan offload in case of time-stamping is ON 3182 */ 3183 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) { 3184 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 3185 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n"); 3186 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3187 } 3188 3189 err = mlx4_en_alloc_resources(priv); 3190 if (err) { 3191 en_err(priv, "Failed reallocating port resources\n"); 3192 goto out; 3193 } 3194 if (port_up) { 3195 err = mlx4_en_start_port(dev); 3196 if (err) 3197 en_err(priv, "Failed starting port\n"); 3198 } 3199 3200 out: 3201 mutex_unlock(&mdev->state_lock); 3202 netdev_features_change(dev); 3203 return err; 3204 } 3205