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 43 #include <linux/mlx4/driver.h> 44 #include <linux/mlx4/device.h> 45 #include <linux/mlx4/cmd.h> 46 #include <linux/mlx4/cq.h> 47 48 #include "mlx4_en.h" 49 #include "en_port.h" 50 51 int mlx4_en_setup_tc(struct net_device *dev, u8 up) 52 { 53 struct mlx4_en_priv *priv = netdev_priv(dev); 54 int i; 55 unsigned int offset = 0; 56 57 if (up && up != MLX4_EN_NUM_UP) 58 return -EINVAL; 59 60 netdev_set_num_tc(dev, up); 61 62 /* Partition Tx queues evenly amongst UP's */ 63 for (i = 0; i < up; i++) { 64 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset); 65 offset += priv->num_tx_rings_p_up; 66 } 67 68 return 0; 69 } 70 71 #ifdef CONFIG_NET_RX_BUSY_POLL 72 /* must be called with local_bh_disable()d */ 73 static int mlx4_en_low_latency_recv(struct napi_struct *napi) 74 { 75 struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi); 76 struct net_device *dev = cq->dev; 77 struct mlx4_en_priv *priv = netdev_priv(dev); 78 struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring]; 79 int done; 80 81 if (!priv->port_up) 82 return LL_FLUSH_FAILED; 83 84 if (!mlx4_en_cq_lock_poll(cq)) 85 return LL_FLUSH_BUSY; 86 87 done = mlx4_en_process_rx_cq(dev, cq, 4); 88 if (likely(done)) 89 rx_ring->cleaned += done; 90 else 91 rx_ring->misses++; 92 93 mlx4_en_cq_unlock_poll(cq); 94 95 return done; 96 } 97 #endif /* CONFIG_NET_RX_BUSY_POLL */ 98 99 #ifdef CONFIG_RFS_ACCEL 100 101 struct mlx4_en_filter { 102 struct list_head next; 103 struct work_struct work; 104 105 u8 ip_proto; 106 __be32 src_ip; 107 __be32 dst_ip; 108 __be16 src_port; 109 __be16 dst_port; 110 111 int rxq_index; 112 struct mlx4_en_priv *priv; 113 u32 flow_id; /* RFS infrastructure id */ 114 int id; /* mlx4_en driver id */ 115 u64 reg_id; /* Flow steering API id */ 116 u8 activated; /* Used to prevent expiry before filter 117 * is attached 118 */ 119 struct hlist_node filter_chain; 120 }; 121 122 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv); 123 124 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto) 125 { 126 switch (ip_proto) { 127 case IPPROTO_UDP: 128 return MLX4_NET_TRANS_RULE_ID_UDP; 129 case IPPROTO_TCP: 130 return MLX4_NET_TRANS_RULE_ID_TCP; 131 default: 132 return -EPROTONOSUPPORT; 133 } 134 }; 135 136 static void mlx4_en_filter_work(struct work_struct *work) 137 { 138 struct mlx4_en_filter *filter = container_of(work, 139 struct mlx4_en_filter, 140 work); 141 struct mlx4_en_priv *priv = filter->priv; 142 struct mlx4_spec_list spec_tcp_udp = { 143 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto), 144 { 145 .tcp_udp = { 146 .dst_port = filter->dst_port, 147 .dst_port_msk = (__force __be16)-1, 148 .src_port = filter->src_port, 149 .src_port_msk = (__force __be16)-1, 150 }, 151 }, 152 }; 153 struct mlx4_spec_list spec_ip = { 154 .id = MLX4_NET_TRANS_RULE_ID_IPV4, 155 { 156 .ipv4 = { 157 .dst_ip = filter->dst_ip, 158 .dst_ip_msk = (__force __be32)-1, 159 .src_ip = filter->src_ip, 160 .src_ip_msk = (__force __be32)-1, 161 }, 162 }, 163 }; 164 struct mlx4_spec_list spec_eth = { 165 .id = MLX4_NET_TRANS_RULE_ID_ETH, 166 }; 167 struct mlx4_net_trans_rule rule = { 168 .list = LIST_HEAD_INIT(rule.list), 169 .queue_mode = MLX4_NET_TRANS_Q_LIFO, 170 .exclusive = 1, 171 .allow_loopback = 1, 172 .promisc_mode = MLX4_FS_REGULAR, 173 .port = priv->port, 174 .priority = MLX4_DOMAIN_RFS, 175 }; 176 int rc; 177 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 178 179 if (spec_tcp_udp.id < 0) { 180 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n", 181 filter->ip_proto); 182 goto ignore; 183 } 184 list_add_tail(&spec_eth.list, &rule.list); 185 list_add_tail(&spec_ip.list, &rule.list); 186 list_add_tail(&spec_tcp_udp.list, &rule.list); 187 188 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn; 189 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN); 190 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 191 192 filter->activated = 0; 193 194 if (filter->reg_id) { 195 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 196 if (rc && rc != -ENOENT) 197 en_err(priv, "Error detaching flow. rc = %d\n", rc); 198 } 199 200 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id); 201 if (rc) 202 en_err(priv, "Error attaching flow. err = %d\n", rc); 203 204 ignore: 205 mlx4_en_filter_rfs_expire(priv); 206 207 filter->activated = 1; 208 } 209 210 static inline struct hlist_head * 211 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 212 __be16 src_port, __be16 dst_port) 213 { 214 unsigned long l; 215 int bucket_idx; 216 217 l = (__force unsigned long)src_port | 218 ((__force unsigned long)dst_port << 2); 219 l ^= (__force unsigned long)(src_ip ^ dst_ip); 220 221 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT); 222 223 return &priv->filter_hash[bucket_idx]; 224 } 225 226 static struct mlx4_en_filter * 227 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip, 228 __be32 dst_ip, u8 ip_proto, __be16 src_port, 229 __be16 dst_port, u32 flow_id) 230 { 231 struct mlx4_en_filter *filter = NULL; 232 233 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC); 234 if (!filter) 235 return NULL; 236 237 filter->priv = priv; 238 filter->rxq_index = rxq_index; 239 INIT_WORK(&filter->work, mlx4_en_filter_work); 240 241 filter->src_ip = src_ip; 242 filter->dst_ip = dst_ip; 243 filter->ip_proto = ip_proto; 244 filter->src_port = src_port; 245 filter->dst_port = dst_port; 246 247 filter->flow_id = flow_id; 248 249 filter->id = priv->last_filter_id++ % RPS_NO_FILTER; 250 251 list_add_tail(&filter->next, &priv->filters); 252 hlist_add_head(&filter->filter_chain, 253 filter_hash_bucket(priv, src_ip, dst_ip, src_port, 254 dst_port)); 255 256 return filter; 257 } 258 259 static void mlx4_en_filter_free(struct mlx4_en_filter *filter) 260 { 261 struct mlx4_en_priv *priv = filter->priv; 262 int rc; 263 264 list_del(&filter->next); 265 266 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 267 if (rc && rc != -ENOENT) 268 en_err(priv, "Error detaching flow. rc = %d\n", rc); 269 270 kfree(filter); 271 } 272 273 static inline struct mlx4_en_filter * 274 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 275 u8 ip_proto, __be16 src_port, __be16 dst_port) 276 { 277 struct mlx4_en_filter *filter; 278 struct mlx4_en_filter *ret = NULL; 279 280 hlist_for_each_entry(filter, 281 filter_hash_bucket(priv, src_ip, dst_ip, 282 src_port, dst_port), 283 filter_chain) { 284 if (filter->src_ip == src_ip && 285 filter->dst_ip == dst_ip && 286 filter->ip_proto == ip_proto && 287 filter->src_port == src_port && 288 filter->dst_port == dst_port) { 289 ret = filter; 290 break; 291 } 292 } 293 294 return ret; 295 } 296 297 static int 298 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 299 u16 rxq_index, u32 flow_id) 300 { 301 struct mlx4_en_priv *priv = netdev_priv(net_dev); 302 struct mlx4_en_filter *filter; 303 const struct iphdr *ip; 304 const __be16 *ports; 305 u8 ip_proto; 306 __be32 src_ip; 307 __be32 dst_ip; 308 __be16 src_port; 309 __be16 dst_port; 310 int nhoff = skb_network_offset(skb); 311 int ret = 0; 312 313 if (skb->protocol != htons(ETH_P_IP)) 314 return -EPROTONOSUPPORT; 315 316 ip = (const struct iphdr *)(skb->data + nhoff); 317 if (ip_is_fragment(ip)) 318 return -EPROTONOSUPPORT; 319 320 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP)) 321 return -EPROTONOSUPPORT; 322 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); 323 324 ip_proto = ip->protocol; 325 src_ip = ip->saddr; 326 dst_ip = ip->daddr; 327 src_port = ports[0]; 328 dst_port = ports[1]; 329 330 spin_lock_bh(&priv->filters_lock); 331 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto, 332 src_port, dst_port); 333 if (filter) { 334 if (filter->rxq_index == rxq_index) 335 goto out; 336 337 filter->rxq_index = rxq_index; 338 } else { 339 filter = mlx4_en_filter_alloc(priv, rxq_index, 340 src_ip, dst_ip, ip_proto, 341 src_port, dst_port, flow_id); 342 if (!filter) { 343 ret = -ENOMEM; 344 goto err; 345 } 346 } 347 348 queue_work(priv->mdev->workqueue, &filter->work); 349 350 out: 351 ret = filter->id; 352 err: 353 spin_unlock_bh(&priv->filters_lock); 354 355 return ret; 356 } 357 358 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv) 359 { 360 struct mlx4_en_filter *filter, *tmp; 361 LIST_HEAD(del_list); 362 363 spin_lock_bh(&priv->filters_lock); 364 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 365 list_move(&filter->next, &del_list); 366 hlist_del(&filter->filter_chain); 367 } 368 spin_unlock_bh(&priv->filters_lock); 369 370 list_for_each_entry_safe(filter, tmp, &del_list, next) { 371 cancel_work_sync(&filter->work); 372 mlx4_en_filter_free(filter); 373 } 374 } 375 376 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv) 377 { 378 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL; 379 LIST_HEAD(del_list); 380 int i = 0; 381 382 spin_lock_bh(&priv->filters_lock); 383 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 384 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA) 385 break; 386 387 if (filter->activated && 388 !work_pending(&filter->work) && 389 rps_may_expire_flow(priv->dev, 390 filter->rxq_index, filter->flow_id, 391 filter->id)) { 392 list_move(&filter->next, &del_list); 393 hlist_del(&filter->filter_chain); 394 } else 395 last_filter = filter; 396 397 i++; 398 } 399 400 if (last_filter && (&last_filter->next != priv->filters.next)) 401 list_move(&priv->filters, &last_filter->next); 402 403 spin_unlock_bh(&priv->filters_lock); 404 405 list_for_each_entry_safe(filter, tmp, &del_list, next) 406 mlx4_en_filter_free(filter); 407 } 408 #endif 409 410 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev, 411 __be16 proto, u16 vid) 412 { 413 struct mlx4_en_priv *priv = netdev_priv(dev); 414 struct mlx4_en_dev *mdev = priv->mdev; 415 int err; 416 int idx; 417 418 en_dbg(HW, priv, "adding VLAN:%d\n", vid); 419 420 set_bit(vid, priv->active_vlans); 421 422 /* Add VID to port VLAN filter */ 423 mutex_lock(&mdev->state_lock); 424 if (mdev->device_up && priv->port_up) { 425 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 426 if (err) 427 en_err(priv, "Failed configuring VLAN filter\n"); 428 } 429 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx)) 430 en_dbg(HW, priv, "failed adding vlan %d\n", vid); 431 mutex_unlock(&mdev->state_lock); 432 433 return 0; 434 } 435 436 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, 437 __be16 proto, u16 vid) 438 { 439 struct mlx4_en_priv *priv = netdev_priv(dev); 440 struct mlx4_en_dev *mdev = priv->mdev; 441 int err; 442 443 en_dbg(HW, priv, "Killing VID:%d\n", vid); 444 445 clear_bit(vid, priv->active_vlans); 446 447 /* Remove VID from port VLAN filter */ 448 mutex_lock(&mdev->state_lock); 449 mlx4_unregister_vlan(mdev->dev, priv->port, vid); 450 451 if (mdev->device_up && priv->port_up) { 452 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 453 if (err) 454 en_err(priv, "Failed configuring VLAN filter\n"); 455 } 456 mutex_unlock(&mdev->state_lock); 457 458 return 0; 459 } 460 461 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) 462 { 463 int i; 464 for (i = ETH_ALEN - 1; i >= 0; --i) { 465 dst_mac[i] = src_mac & 0xff; 466 src_mac >>= 8; 467 } 468 memset(&dst_mac[ETH_ALEN], 0, 2); 469 } 470 471 472 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr, 473 int qpn, u64 *reg_id) 474 { 475 int err; 476 struct mlx4_spec_list spec_eth_outer = { {NULL} }; 477 struct mlx4_spec_list spec_vxlan = { {NULL} }; 478 struct mlx4_spec_list spec_eth_inner = { {NULL} }; 479 480 struct mlx4_net_trans_rule rule = { 481 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 482 .exclusive = 0, 483 .allow_loopback = 1, 484 .promisc_mode = MLX4_FS_REGULAR, 485 .priority = MLX4_DOMAIN_NIC, 486 }; 487 488 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 489 490 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 491 return 0; /* do nothing */ 492 493 rule.port = priv->port; 494 rule.qpn = qpn; 495 INIT_LIST_HEAD(&rule.list); 496 497 spec_eth_outer.id = MLX4_NET_TRANS_RULE_ID_ETH; 498 memcpy(spec_eth_outer.eth.dst_mac, addr, ETH_ALEN); 499 memcpy(spec_eth_outer.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 500 501 spec_vxlan.id = MLX4_NET_TRANS_RULE_ID_VXLAN; /* any vxlan header */ 502 spec_eth_inner.id = MLX4_NET_TRANS_RULE_ID_ETH; /* any inner eth header */ 503 504 list_add_tail(&spec_eth_outer.list, &rule.list); 505 list_add_tail(&spec_vxlan.list, &rule.list); 506 list_add_tail(&spec_eth_inner.list, &rule.list); 507 508 err = mlx4_flow_attach(priv->mdev->dev, &rule, reg_id); 509 if (err) { 510 en_err(priv, "failed to add vxlan steering rule, err %d\n", err); 511 return err; 512 } 513 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id); 514 return 0; 515 } 516 517 518 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv, 519 unsigned char *mac, int *qpn, u64 *reg_id) 520 { 521 struct mlx4_en_dev *mdev = priv->mdev; 522 struct mlx4_dev *dev = mdev->dev; 523 int err; 524 525 switch (dev->caps.steering_mode) { 526 case MLX4_STEERING_MODE_B0: { 527 struct mlx4_qp qp; 528 u8 gid[16] = {0}; 529 530 qp.qpn = *qpn; 531 memcpy(&gid[10], mac, ETH_ALEN); 532 gid[5] = priv->port; 533 534 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH); 535 break; 536 } 537 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 538 struct mlx4_spec_list spec_eth = { {NULL} }; 539 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 540 541 struct mlx4_net_trans_rule rule = { 542 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 543 .exclusive = 0, 544 .allow_loopback = 1, 545 .promisc_mode = MLX4_FS_REGULAR, 546 .priority = MLX4_DOMAIN_NIC, 547 }; 548 549 rule.port = priv->port; 550 rule.qpn = *qpn; 551 INIT_LIST_HEAD(&rule.list); 552 553 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH; 554 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN); 555 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 556 list_add_tail(&spec_eth.list, &rule.list); 557 558 err = mlx4_flow_attach(dev, &rule, reg_id); 559 break; 560 } 561 default: 562 return -EINVAL; 563 } 564 if (err) 565 en_warn(priv, "Failed Attaching Unicast\n"); 566 567 return err; 568 } 569 570 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv, 571 unsigned char *mac, int qpn, u64 reg_id) 572 { 573 struct mlx4_en_dev *mdev = priv->mdev; 574 struct mlx4_dev *dev = mdev->dev; 575 576 switch (dev->caps.steering_mode) { 577 case MLX4_STEERING_MODE_B0: { 578 struct mlx4_qp qp; 579 u8 gid[16] = {0}; 580 581 qp.qpn = qpn; 582 memcpy(&gid[10], mac, ETH_ALEN); 583 gid[5] = priv->port; 584 585 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH); 586 break; 587 } 588 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 589 mlx4_flow_detach(dev, reg_id); 590 break; 591 } 592 default: 593 en_err(priv, "Invalid steering mode.\n"); 594 } 595 } 596 597 static int mlx4_en_get_qp(struct mlx4_en_priv *priv) 598 { 599 struct mlx4_en_dev *mdev = priv->mdev; 600 struct mlx4_dev *dev = mdev->dev; 601 struct mlx4_mac_entry *entry; 602 int index = 0; 603 int err = 0; 604 u64 reg_id; 605 int *qpn = &priv->base_qpn; 606 u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr); 607 608 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n", 609 priv->dev->dev_addr); 610 index = mlx4_register_mac(dev, priv->port, mac); 611 if (index < 0) { 612 err = index; 613 en_err(priv, "Failed adding MAC: %pM\n", 614 priv->dev->dev_addr); 615 return err; 616 } 617 618 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 619 int base_qpn = mlx4_get_base_qpn(dev, priv->port); 620 *qpn = base_qpn + index; 621 return 0; 622 } 623 624 err = mlx4_qp_reserve_range(dev, 1, 1, qpn); 625 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); 626 if (err) { 627 en_err(priv, "Failed to reserve qp for mac registration\n"); 628 goto qp_err; 629 } 630 631 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); 632 if (err) 633 goto steer_err; 634 635 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn, 636 &priv->tunnel_reg_id); 637 if (err) 638 goto tunnel_err; 639 640 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 641 if (!entry) { 642 err = -ENOMEM; 643 goto alloc_err; 644 } 645 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac)); 646 entry->reg_id = reg_id; 647 648 hlist_add_head_rcu(&entry->hlist, 649 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); 650 651 return 0; 652 653 alloc_err: 654 if (priv->tunnel_reg_id) 655 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 656 tunnel_err: 657 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 658 659 steer_err: 660 mlx4_qp_release_range(dev, *qpn, 1); 661 662 qp_err: 663 mlx4_unregister_mac(dev, priv->port, mac); 664 return err; 665 } 666 667 static void mlx4_en_put_qp(struct mlx4_en_priv *priv) 668 { 669 struct mlx4_en_dev *mdev = priv->mdev; 670 struct mlx4_dev *dev = mdev->dev; 671 int qpn = priv->base_qpn; 672 u64 mac; 673 674 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 675 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr); 676 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 677 priv->dev->dev_addr); 678 mlx4_unregister_mac(dev, priv->port, mac); 679 } else { 680 struct mlx4_mac_entry *entry; 681 struct hlist_node *tmp; 682 struct hlist_head *bucket; 683 unsigned int i; 684 685 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 686 bucket = &priv->mac_hash[i]; 687 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 688 mac = mlx4_en_mac_to_u64(entry->mac); 689 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 690 entry->mac); 691 mlx4_en_uc_steer_release(priv, entry->mac, 692 qpn, entry->reg_id); 693 694 mlx4_unregister_mac(dev, priv->port, mac); 695 hlist_del_rcu(&entry->hlist); 696 kfree_rcu(entry, rcu); 697 } 698 } 699 700 if (priv->tunnel_reg_id) { 701 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 702 priv->tunnel_reg_id = 0; 703 } 704 705 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", 706 priv->port, qpn); 707 mlx4_qp_release_range(dev, qpn, 1); 708 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 709 } 710 } 711 712 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, 713 unsigned char *new_mac, unsigned char *prev_mac) 714 { 715 struct mlx4_en_dev *mdev = priv->mdev; 716 struct mlx4_dev *dev = mdev->dev; 717 int err = 0; 718 u64 new_mac_u64 = mlx4_en_mac_to_u64(new_mac); 719 720 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { 721 struct hlist_head *bucket; 722 unsigned int mac_hash; 723 struct mlx4_mac_entry *entry; 724 struct hlist_node *tmp; 725 u64 prev_mac_u64 = mlx4_en_mac_to_u64(prev_mac); 726 727 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; 728 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 729 if (ether_addr_equal_64bits(entry->mac, prev_mac)) { 730 mlx4_en_uc_steer_release(priv, entry->mac, 731 qpn, entry->reg_id); 732 mlx4_unregister_mac(dev, priv->port, 733 prev_mac_u64); 734 hlist_del_rcu(&entry->hlist); 735 synchronize_rcu(); 736 memcpy(entry->mac, new_mac, ETH_ALEN); 737 entry->reg_id = 0; 738 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; 739 hlist_add_head_rcu(&entry->hlist, 740 &priv->mac_hash[mac_hash]); 741 mlx4_register_mac(dev, priv->port, new_mac_u64); 742 err = mlx4_en_uc_steer_add(priv, new_mac, 743 &qpn, 744 &entry->reg_id); 745 return err; 746 } 747 } 748 return -EINVAL; 749 } 750 751 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); 752 } 753 754 u64 mlx4_en_mac_to_u64(u8 *addr) 755 { 756 u64 mac = 0; 757 int i; 758 759 for (i = 0; i < ETH_ALEN; i++) { 760 mac <<= 8; 761 mac |= addr[i]; 762 } 763 return mac; 764 } 765 766 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv) 767 { 768 int err = 0; 769 770 if (priv->port_up) { 771 /* Remove old MAC and insert the new one */ 772 err = mlx4_en_replace_mac(priv, priv->base_qpn, 773 priv->dev->dev_addr, priv->prev_mac); 774 if (err) 775 en_err(priv, "Failed changing HW MAC address\n"); 776 memcpy(priv->prev_mac, priv->dev->dev_addr, 777 sizeof(priv->prev_mac)); 778 } else 779 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); 780 781 return err; 782 } 783 784 static int mlx4_en_set_mac(struct net_device *dev, void *addr) 785 { 786 struct mlx4_en_priv *priv = netdev_priv(dev); 787 struct mlx4_en_dev *mdev = priv->mdev; 788 struct sockaddr *saddr = addr; 789 int err; 790 791 if (!is_valid_ether_addr(saddr->sa_data)) 792 return -EADDRNOTAVAIL; 793 794 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); 795 796 mutex_lock(&mdev->state_lock); 797 err = mlx4_en_do_set_mac(priv); 798 mutex_unlock(&mdev->state_lock); 799 800 return err; 801 } 802 803 static void mlx4_en_clear_list(struct net_device *dev) 804 { 805 struct mlx4_en_priv *priv = netdev_priv(dev); 806 struct mlx4_en_mc_list *tmp, *mc_to_del; 807 808 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { 809 list_del(&mc_to_del->list); 810 kfree(mc_to_del); 811 } 812 } 813 814 static void mlx4_en_cache_mclist(struct net_device *dev) 815 { 816 struct mlx4_en_priv *priv = netdev_priv(dev); 817 struct netdev_hw_addr *ha; 818 struct mlx4_en_mc_list *tmp; 819 820 mlx4_en_clear_list(dev); 821 netdev_for_each_mc_addr(ha, dev) { 822 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); 823 if (!tmp) { 824 mlx4_en_clear_list(dev); 825 return; 826 } 827 memcpy(tmp->addr, ha->addr, ETH_ALEN); 828 list_add_tail(&tmp->list, &priv->mc_list); 829 } 830 } 831 832 static void update_mclist_flags(struct mlx4_en_priv *priv, 833 struct list_head *dst, 834 struct list_head *src) 835 { 836 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; 837 bool found; 838 839 /* Find all the entries that should be removed from dst, 840 * These are the entries that are not found in src 841 */ 842 list_for_each_entry(dst_tmp, dst, list) { 843 found = false; 844 list_for_each_entry(src_tmp, src, list) { 845 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 846 found = true; 847 break; 848 } 849 } 850 if (!found) 851 dst_tmp->action = MCLIST_REM; 852 } 853 854 /* Add entries that exist in src but not in dst 855 * mark them as need to add 856 */ 857 list_for_each_entry(src_tmp, src, list) { 858 found = false; 859 list_for_each_entry(dst_tmp, dst, list) { 860 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 861 dst_tmp->action = MCLIST_NONE; 862 found = true; 863 break; 864 } 865 } 866 if (!found) { 867 new_mc = kmemdup(src_tmp, 868 sizeof(struct mlx4_en_mc_list), 869 GFP_KERNEL); 870 if (!new_mc) 871 return; 872 873 new_mc->action = MCLIST_ADD; 874 list_add_tail(&new_mc->list, dst); 875 } 876 } 877 } 878 879 static void mlx4_en_set_rx_mode(struct net_device *dev) 880 { 881 struct mlx4_en_priv *priv = netdev_priv(dev); 882 883 if (!priv->port_up) 884 return; 885 886 queue_work(priv->mdev->workqueue, &priv->rx_mode_task); 887 } 888 889 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, 890 struct mlx4_en_dev *mdev) 891 { 892 int err = 0; 893 894 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { 895 if (netif_msg_rx_status(priv)) 896 en_warn(priv, "Entering promiscuous mode\n"); 897 priv->flags |= MLX4_EN_FLAG_PROMISC; 898 899 /* Enable promiscouos mode */ 900 switch (mdev->dev->caps.steering_mode) { 901 case MLX4_STEERING_MODE_DEVICE_MANAGED: 902 err = mlx4_flow_steer_promisc_add(mdev->dev, 903 priv->port, 904 priv->base_qpn, 905 MLX4_FS_ALL_DEFAULT); 906 if (err) 907 en_err(priv, "Failed enabling promiscuous mode\n"); 908 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 909 break; 910 911 case MLX4_STEERING_MODE_B0: 912 err = mlx4_unicast_promisc_add(mdev->dev, 913 priv->base_qpn, 914 priv->port); 915 if (err) 916 en_err(priv, "Failed enabling unicast promiscuous mode\n"); 917 918 /* Add the default qp number as multicast 919 * promisc 920 */ 921 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 922 err = mlx4_multicast_promisc_add(mdev->dev, 923 priv->base_qpn, 924 priv->port); 925 if (err) 926 en_err(priv, "Failed enabling multicast promiscuous mode\n"); 927 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 928 } 929 break; 930 931 case MLX4_STEERING_MODE_A0: 932 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 933 priv->port, 934 priv->base_qpn, 935 1); 936 if (err) 937 en_err(priv, "Failed enabling promiscuous mode\n"); 938 break; 939 } 940 941 /* Disable port multicast filter (unconditionally) */ 942 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 943 0, MLX4_MCAST_DISABLE); 944 if (err) 945 en_err(priv, "Failed disabling multicast filter\n"); 946 947 /* Disable port VLAN filter */ 948 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 949 if (err) 950 en_err(priv, "Failed disabling VLAN filter\n"); 951 } 952 } 953 954 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv, 955 struct mlx4_en_dev *mdev) 956 { 957 int err = 0; 958 959 if (netif_msg_rx_status(priv)) 960 en_warn(priv, "Leaving promiscuous mode\n"); 961 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 962 963 /* Disable promiscouos mode */ 964 switch (mdev->dev->caps.steering_mode) { 965 case MLX4_STEERING_MODE_DEVICE_MANAGED: 966 err = mlx4_flow_steer_promisc_remove(mdev->dev, 967 priv->port, 968 MLX4_FS_ALL_DEFAULT); 969 if (err) 970 en_err(priv, "Failed disabling promiscuous mode\n"); 971 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 972 break; 973 974 case MLX4_STEERING_MODE_B0: 975 err = mlx4_unicast_promisc_remove(mdev->dev, 976 priv->base_qpn, 977 priv->port); 978 if (err) 979 en_err(priv, "Failed disabling unicast promiscuous mode\n"); 980 /* Disable Multicast promisc */ 981 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 982 err = mlx4_multicast_promisc_remove(mdev->dev, 983 priv->base_qpn, 984 priv->port); 985 if (err) 986 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 987 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 988 } 989 break; 990 991 case MLX4_STEERING_MODE_A0: 992 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 993 priv->port, 994 priv->base_qpn, 0); 995 if (err) 996 en_err(priv, "Failed disabling promiscuous mode\n"); 997 break; 998 } 999 1000 /* Enable port VLAN filter */ 1001 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 1002 if (err) 1003 en_err(priv, "Failed enabling VLAN filter\n"); 1004 } 1005 1006 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, 1007 struct net_device *dev, 1008 struct mlx4_en_dev *mdev) 1009 { 1010 struct mlx4_en_mc_list *mclist, *tmp; 1011 u64 mcast_addr = 0; 1012 u8 mc_list[16] = {0}; 1013 int err = 0; 1014 1015 /* Enable/disable the multicast filter according to IFF_ALLMULTI */ 1016 if (dev->flags & IFF_ALLMULTI) { 1017 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1018 0, MLX4_MCAST_DISABLE); 1019 if (err) 1020 en_err(priv, "Failed disabling multicast filter\n"); 1021 1022 /* Add the default qp number as multicast promisc */ 1023 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 1024 switch (mdev->dev->caps.steering_mode) { 1025 case MLX4_STEERING_MODE_DEVICE_MANAGED: 1026 err = mlx4_flow_steer_promisc_add(mdev->dev, 1027 priv->port, 1028 priv->base_qpn, 1029 MLX4_FS_MC_DEFAULT); 1030 break; 1031 1032 case MLX4_STEERING_MODE_B0: 1033 err = mlx4_multicast_promisc_add(mdev->dev, 1034 priv->base_qpn, 1035 priv->port); 1036 break; 1037 1038 case MLX4_STEERING_MODE_A0: 1039 break; 1040 } 1041 if (err) 1042 en_err(priv, "Failed entering multicast promisc mode\n"); 1043 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 1044 } 1045 } else { 1046 /* Disable Multicast promisc */ 1047 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1048 switch (mdev->dev->caps.steering_mode) { 1049 case MLX4_STEERING_MODE_DEVICE_MANAGED: 1050 err = mlx4_flow_steer_promisc_remove(mdev->dev, 1051 priv->port, 1052 MLX4_FS_MC_DEFAULT); 1053 break; 1054 1055 case MLX4_STEERING_MODE_B0: 1056 err = mlx4_multicast_promisc_remove(mdev->dev, 1057 priv->base_qpn, 1058 priv->port); 1059 break; 1060 1061 case MLX4_STEERING_MODE_A0: 1062 break; 1063 } 1064 if (err) 1065 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 1066 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1067 } 1068 1069 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1070 0, MLX4_MCAST_DISABLE); 1071 if (err) 1072 en_err(priv, "Failed disabling multicast filter\n"); 1073 1074 /* Flush mcast filter and init it with broadcast address */ 1075 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, 1076 1, MLX4_MCAST_CONFIG); 1077 1078 /* Update multicast list - we cache all addresses so they won't 1079 * change while HW is updated holding the command semaphor */ 1080 netif_addr_lock_bh(dev); 1081 mlx4_en_cache_mclist(dev); 1082 netif_addr_unlock_bh(dev); 1083 list_for_each_entry(mclist, &priv->mc_list, list) { 1084 mcast_addr = mlx4_en_mac_to_u64(mclist->addr); 1085 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 1086 mcast_addr, 0, MLX4_MCAST_CONFIG); 1087 } 1088 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1089 0, MLX4_MCAST_ENABLE); 1090 if (err) 1091 en_err(priv, "Failed enabling multicast filter\n"); 1092 1093 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); 1094 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1095 if (mclist->action == MCLIST_REM) { 1096 /* detach this address and delete from list */ 1097 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1098 mc_list[5] = priv->port; 1099 err = mlx4_multicast_detach(mdev->dev, 1100 &priv->rss_map.indir_qp, 1101 mc_list, 1102 MLX4_PROT_ETH, 1103 mclist->reg_id); 1104 if (err) 1105 en_err(priv, "Fail to detach multicast address\n"); 1106 1107 if (mclist->tunnel_reg_id) { 1108 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id); 1109 if (err) 1110 en_err(priv, "Failed to detach multicast address\n"); 1111 } 1112 1113 /* remove from list */ 1114 list_del(&mclist->list); 1115 kfree(mclist); 1116 } else if (mclist->action == MCLIST_ADD) { 1117 /* attach the address */ 1118 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1119 /* needed for B0 steering support */ 1120 mc_list[5] = priv->port; 1121 err = mlx4_multicast_attach(mdev->dev, 1122 &priv->rss_map.indir_qp, 1123 mc_list, 1124 priv->port, 0, 1125 MLX4_PROT_ETH, 1126 &mclist->reg_id); 1127 if (err) 1128 en_err(priv, "Fail to attach multicast address\n"); 1129 1130 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn, 1131 &mclist->tunnel_reg_id); 1132 if (err) 1133 en_err(priv, "Failed to attach multicast address\n"); 1134 } 1135 } 1136 } 1137 } 1138 1139 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, 1140 struct net_device *dev, 1141 struct mlx4_en_dev *mdev) 1142 { 1143 struct netdev_hw_addr *ha; 1144 struct mlx4_mac_entry *entry; 1145 struct hlist_node *tmp; 1146 bool found; 1147 u64 mac; 1148 int err = 0; 1149 struct hlist_head *bucket; 1150 unsigned int i; 1151 int removed = 0; 1152 u32 prev_flags; 1153 1154 /* Note that we do not need to protect our mac_hash traversal with rcu, 1155 * since all modification code is protected by mdev->state_lock 1156 */ 1157 1158 /* find what to remove */ 1159 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1160 bucket = &priv->mac_hash[i]; 1161 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1162 found = false; 1163 netdev_for_each_uc_addr(ha, dev) { 1164 if (ether_addr_equal_64bits(entry->mac, 1165 ha->addr)) { 1166 found = true; 1167 break; 1168 } 1169 } 1170 1171 /* MAC address of the port is not in uc list */ 1172 if (ether_addr_equal_64bits(entry->mac, dev->dev_addr)) 1173 found = true; 1174 1175 if (!found) { 1176 mac = mlx4_en_mac_to_u64(entry->mac); 1177 mlx4_en_uc_steer_release(priv, entry->mac, 1178 priv->base_qpn, 1179 entry->reg_id); 1180 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1181 1182 hlist_del_rcu(&entry->hlist); 1183 kfree_rcu(entry, rcu); 1184 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", 1185 entry->mac, priv->port); 1186 ++removed; 1187 } 1188 } 1189 } 1190 1191 /* if we didn't remove anything, there is no use in trying to add 1192 * again once we are in a forced promisc mode state 1193 */ 1194 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) 1195 return; 1196 1197 prev_flags = priv->flags; 1198 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 1199 1200 /* find what to add */ 1201 netdev_for_each_uc_addr(ha, dev) { 1202 found = false; 1203 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; 1204 hlist_for_each_entry(entry, bucket, hlist) { 1205 if (ether_addr_equal_64bits(entry->mac, ha->addr)) { 1206 found = true; 1207 break; 1208 } 1209 } 1210 1211 if (!found) { 1212 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1213 if (!entry) { 1214 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", 1215 ha->addr, priv->port); 1216 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1217 break; 1218 } 1219 mac = mlx4_en_mac_to_u64(ha->addr); 1220 memcpy(entry->mac, ha->addr, ETH_ALEN); 1221 err = mlx4_register_mac(mdev->dev, priv->port, mac); 1222 if (err < 0) { 1223 en_err(priv, "Failed registering MAC %pM on port %d: %d\n", 1224 ha->addr, priv->port, err); 1225 kfree(entry); 1226 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1227 break; 1228 } 1229 err = mlx4_en_uc_steer_add(priv, ha->addr, 1230 &priv->base_qpn, 1231 &entry->reg_id); 1232 if (err) { 1233 en_err(priv, "Failed adding MAC %pM on port %d: %d\n", 1234 ha->addr, priv->port, err); 1235 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1236 kfree(entry); 1237 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1238 break; 1239 } else { 1240 unsigned int mac_hash; 1241 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", 1242 ha->addr, priv->port); 1243 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; 1244 bucket = &priv->mac_hash[mac_hash]; 1245 hlist_add_head_rcu(&entry->hlist, bucket); 1246 } 1247 } 1248 } 1249 1250 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1251 en_warn(priv, "Forcing promiscuous mode on port:%d\n", 1252 priv->port); 1253 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1254 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", 1255 priv->port); 1256 } 1257 } 1258 1259 static void mlx4_en_do_set_rx_mode(struct work_struct *work) 1260 { 1261 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1262 rx_mode_task); 1263 struct mlx4_en_dev *mdev = priv->mdev; 1264 struct net_device *dev = priv->dev; 1265 1266 mutex_lock(&mdev->state_lock); 1267 if (!mdev->device_up) { 1268 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); 1269 goto out; 1270 } 1271 if (!priv->port_up) { 1272 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); 1273 goto out; 1274 } 1275 1276 if (!netif_carrier_ok(dev)) { 1277 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { 1278 if (priv->port_state.link_state) { 1279 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; 1280 netif_carrier_on(dev); 1281 en_dbg(LINK, priv, "Link Up\n"); 1282 } 1283 } 1284 } 1285 1286 if (dev->priv_flags & IFF_UNICAST_FLT) 1287 mlx4_en_do_uc_filter(priv, dev, mdev); 1288 1289 /* Promsicuous mode: disable all filters */ 1290 if ((dev->flags & IFF_PROMISC) || 1291 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { 1292 mlx4_en_set_promisc_mode(priv, mdev); 1293 goto out; 1294 } 1295 1296 /* Not in promiscuous mode */ 1297 if (priv->flags & MLX4_EN_FLAG_PROMISC) 1298 mlx4_en_clear_promisc_mode(priv, mdev); 1299 1300 mlx4_en_do_multicast(priv, dev, mdev); 1301 out: 1302 mutex_unlock(&mdev->state_lock); 1303 } 1304 1305 #ifdef CONFIG_NET_POLL_CONTROLLER 1306 static void mlx4_en_netpoll(struct net_device *dev) 1307 { 1308 struct mlx4_en_priv *priv = netdev_priv(dev); 1309 struct mlx4_en_cq *cq; 1310 unsigned long flags; 1311 int i; 1312 1313 for (i = 0; i < priv->rx_ring_num; i++) { 1314 cq = priv->rx_cq[i]; 1315 spin_lock_irqsave(&cq->lock, flags); 1316 napi_synchronize(&cq->napi); 1317 mlx4_en_process_rx_cq(dev, cq, 0); 1318 spin_unlock_irqrestore(&cq->lock, flags); 1319 } 1320 } 1321 #endif 1322 1323 static void mlx4_en_tx_timeout(struct net_device *dev) 1324 { 1325 struct mlx4_en_priv *priv = netdev_priv(dev); 1326 struct mlx4_en_dev *mdev = priv->mdev; 1327 int i; 1328 1329 if (netif_msg_timer(priv)) 1330 en_warn(priv, "Tx timeout called on port:%d\n", priv->port); 1331 1332 for (i = 0; i < priv->tx_ring_num; i++) { 1333 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) 1334 continue; 1335 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", 1336 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn, 1337 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod); 1338 } 1339 1340 priv->port_stats.tx_timeout++; 1341 en_dbg(DRV, priv, "Scheduling watchdog\n"); 1342 queue_work(mdev->workqueue, &priv->watchdog_task); 1343 } 1344 1345 1346 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev) 1347 { 1348 struct mlx4_en_priv *priv = netdev_priv(dev); 1349 1350 spin_lock_bh(&priv->stats_lock); 1351 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats)); 1352 spin_unlock_bh(&priv->stats_lock); 1353 1354 return &priv->ret_stats; 1355 } 1356 1357 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1358 { 1359 struct mlx4_en_cq *cq; 1360 int i; 1361 1362 /* If we haven't received a specific coalescing setting 1363 * (module param), we set the moderation parameters as follows: 1364 * - moder_cnt is set to the number of mtu sized packets to 1365 * satisfy our coalescing target. 1366 * - moder_time is set to a fixed value. 1367 */ 1368 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1369 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1370 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1371 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1372 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1373 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1374 1375 /* Setup cq moderation params */ 1376 for (i = 0; i < priv->rx_ring_num; i++) { 1377 cq = priv->rx_cq[i]; 1378 cq->moder_cnt = priv->rx_frames; 1379 cq->moder_time = priv->rx_usecs; 1380 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1381 priv->last_moder_packets[i] = 0; 1382 priv->last_moder_bytes[i] = 0; 1383 } 1384 1385 for (i = 0; i < priv->tx_ring_num; i++) { 1386 cq = priv->tx_cq[i]; 1387 cq->moder_cnt = priv->tx_frames; 1388 cq->moder_time = priv->tx_usecs; 1389 } 1390 1391 /* Reset auto-moderation params */ 1392 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1393 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1394 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1395 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1396 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1397 priv->adaptive_rx_coal = 1; 1398 priv->last_moder_jiffies = 0; 1399 priv->last_moder_tx_packets = 0; 1400 } 1401 1402 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1403 { 1404 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1405 struct mlx4_en_cq *cq; 1406 unsigned long packets; 1407 unsigned long rate; 1408 unsigned long avg_pkt_size; 1409 unsigned long rx_packets; 1410 unsigned long rx_bytes; 1411 unsigned long rx_pkt_diff; 1412 int moder_time; 1413 int ring, err; 1414 1415 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1416 return; 1417 1418 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1419 spin_lock_bh(&priv->stats_lock); 1420 rx_packets = priv->rx_ring[ring]->packets; 1421 rx_bytes = priv->rx_ring[ring]->bytes; 1422 spin_unlock_bh(&priv->stats_lock); 1423 1424 rx_pkt_diff = ((unsigned long) (rx_packets - 1425 priv->last_moder_packets[ring])); 1426 packets = rx_pkt_diff; 1427 rate = packets * HZ / period; 1428 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1429 priv->last_moder_bytes[ring])) / packets : 0; 1430 1431 /* Apply auto-moderation only when packet rate 1432 * exceeds a rate that it matters */ 1433 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1434 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1435 if (rate < priv->pkt_rate_low) 1436 moder_time = priv->rx_usecs_low; 1437 else if (rate > priv->pkt_rate_high) 1438 moder_time = priv->rx_usecs_high; 1439 else 1440 moder_time = (rate - priv->pkt_rate_low) * 1441 (priv->rx_usecs_high - priv->rx_usecs_low) / 1442 (priv->pkt_rate_high - priv->pkt_rate_low) + 1443 priv->rx_usecs_low; 1444 } else { 1445 moder_time = priv->rx_usecs_low; 1446 } 1447 1448 if (moder_time != priv->last_moder_time[ring]) { 1449 priv->last_moder_time[ring] = moder_time; 1450 cq = priv->rx_cq[ring]; 1451 cq->moder_time = moder_time; 1452 cq->moder_cnt = priv->rx_frames; 1453 err = mlx4_en_set_cq_moder(priv, cq); 1454 if (err) 1455 en_err(priv, "Failed modifying moderation for cq:%d\n", 1456 ring); 1457 } 1458 priv->last_moder_packets[ring] = rx_packets; 1459 priv->last_moder_bytes[ring] = rx_bytes; 1460 } 1461 1462 priv->last_moder_jiffies = jiffies; 1463 } 1464 1465 static void mlx4_en_do_get_stats(struct work_struct *work) 1466 { 1467 struct delayed_work *delay = to_delayed_work(work); 1468 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1469 stats_task); 1470 struct mlx4_en_dev *mdev = priv->mdev; 1471 int err; 1472 1473 mutex_lock(&mdev->state_lock); 1474 if (mdev->device_up) { 1475 if (priv->port_up) { 1476 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1477 if (err) 1478 en_dbg(HW, priv, "Could not update stats\n"); 1479 1480 mlx4_en_auto_moderation(priv); 1481 } 1482 1483 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1484 } 1485 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1486 mlx4_en_do_set_mac(priv); 1487 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1488 } 1489 mutex_unlock(&mdev->state_lock); 1490 } 1491 1492 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1493 * periodically 1494 */ 1495 static void mlx4_en_service_task(struct work_struct *work) 1496 { 1497 struct delayed_work *delay = to_delayed_work(work); 1498 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1499 service_task); 1500 struct mlx4_en_dev *mdev = priv->mdev; 1501 1502 mutex_lock(&mdev->state_lock); 1503 if (mdev->device_up) { 1504 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1505 mlx4_en_ptp_overflow_check(mdev); 1506 1507 queue_delayed_work(mdev->workqueue, &priv->service_task, 1508 SERVICE_TASK_DELAY); 1509 } 1510 mutex_unlock(&mdev->state_lock); 1511 } 1512 1513 static void mlx4_en_linkstate(struct work_struct *work) 1514 { 1515 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1516 linkstate_task); 1517 struct mlx4_en_dev *mdev = priv->mdev; 1518 int linkstate = priv->link_state; 1519 1520 mutex_lock(&mdev->state_lock); 1521 /* If observable port state changed set carrier state and 1522 * report to system log */ 1523 if (priv->last_link_state != linkstate) { 1524 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1525 en_info(priv, "Link Down\n"); 1526 netif_carrier_off(priv->dev); 1527 } else { 1528 en_info(priv, "Link Up\n"); 1529 netif_carrier_on(priv->dev); 1530 } 1531 } 1532 priv->last_link_state = linkstate; 1533 mutex_unlock(&mdev->state_lock); 1534 } 1535 1536 1537 int mlx4_en_start_port(struct net_device *dev) 1538 { 1539 struct mlx4_en_priv *priv = netdev_priv(dev); 1540 struct mlx4_en_dev *mdev = priv->mdev; 1541 struct mlx4_en_cq *cq; 1542 struct mlx4_en_tx_ring *tx_ring; 1543 int rx_index = 0; 1544 int tx_index = 0; 1545 int err = 0; 1546 int i; 1547 int j; 1548 u8 mc_list[16] = {0}; 1549 1550 if (priv->port_up) { 1551 en_dbg(DRV, priv, "start port called while port already up\n"); 1552 return 0; 1553 } 1554 1555 INIT_LIST_HEAD(&priv->mc_list); 1556 INIT_LIST_HEAD(&priv->curr_list); 1557 INIT_LIST_HEAD(&priv->ethtool_list); 1558 memset(&priv->ethtool_rules[0], 0, 1559 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1560 1561 /* Calculate Rx buf size */ 1562 dev->mtu = min(dev->mtu, priv->max_mtu); 1563 mlx4_en_calc_rx_buf(dev); 1564 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1565 1566 /* Configure rx cq's and rings */ 1567 err = mlx4_en_activate_rx_rings(priv); 1568 if (err) { 1569 en_err(priv, "Failed to activate RX rings\n"); 1570 return err; 1571 } 1572 for (i = 0; i < priv->rx_ring_num; i++) { 1573 cq = priv->rx_cq[i]; 1574 1575 mlx4_en_cq_init_lock(cq); 1576 1577 err = mlx4_en_activate_cq(priv, cq, i); 1578 if (err) { 1579 en_err(priv, "Failed activating Rx CQ\n"); 1580 goto cq_err; 1581 } 1582 for (j = 0; j < cq->size; j++) 1583 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1584 err = mlx4_en_set_cq_moder(priv, cq); 1585 if (err) { 1586 en_err(priv, "Failed setting cq moderation parameters"); 1587 mlx4_en_deactivate_cq(priv, cq); 1588 goto cq_err; 1589 } 1590 mlx4_en_arm_cq(priv, cq); 1591 priv->rx_ring[i]->cqn = cq->mcq.cqn; 1592 ++rx_index; 1593 } 1594 1595 /* Set qp number */ 1596 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1597 err = mlx4_en_get_qp(priv); 1598 if (err) { 1599 en_err(priv, "Failed getting eth qp\n"); 1600 goto cq_err; 1601 } 1602 mdev->mac_removed[priv->port] = 0; 1603 1604 err = mlx4_en_config_rss_steer(priv); 1605 if (err) { 1606 en_err(priv, "Failed configuring rss steering\n"); 1607 goto mac_err; 1608 } 1609 1610 err = mlx4_en_create_drop_qp(priv); 1611 if (err) 1612 goto rss_err; 1613 1614 /* Configure tx cq's and rings */ 1615 for (i = 0; i < priv->tx_ring_num; i++) { 1616 /* Configure cq */ 1617 cq = priv->tx_cq[i]; 1618 err = mlx4_en_activate_cq(priv, cq, i); 1619 if (err) { 1620 en_err(priv, "Failed allocating Tx CQ\n"); 1621 goto tx_err; 1622 } 1623 err = mlx4_en_set_cq_moder(priv, cq); 1624 if (err) { 1625 en_err(priv, "Failed setting cq moderation parameters"); 1626 mlx4_en_deactivate_cq(priv, cq); 1627 goto tx_err; 1628 } 1629 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i); 1630 cq->buf->wqe_index = cpu_to_be16(0xffff); 1631 1632 /* Configure ring */ 1633 tx_ring = priv->tx_ring[i]; 1634 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, 1635 i / priv->num_tx_rings_p_up); 1636 if (err) { 1637 en_err(priv, "Failed allocating Tx ring\n"); 1638 mlx4_en_deactivate_cq(priv, cq); 1639 goto tx_err; 1640 } 1641 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1642 1643 /* Arm CQ for TX completions */ 1644 mlx4_en_arm_cq(priv, cq); 1645 1646 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1647 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1648 *((u32 *) (tx_ring->buf + j)) = 0xffffffff; 1649 ++tx_index; 1650 } 1651 1652 /* Configure port */ 1653 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1654 priv->rx_skb_size + ETH_FCS_LEN, 1655 priv->prof->tx_pause, 1656 priv->prof->tx_ppp, 1657 priv->prof->rx_pause, 1658 priv->prof->rx_ppp); 1659 if (err) { 1660 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1661 priv->port, err); 1662 goto tx_err; 1663 } 1664 /* Set default qp number */ 1665 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1666 if (err) { 1667 en_err(priv, "Failed setting default qp numbers\n"); 1668 goto tx_err; 1669 } 1670 1671 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 1672 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC); 1673 if (err) { 1674 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 1675 err); 1676 goto tx_err; 1677 } 1678 } 1679 1680 /* Init port */ 1681 en_dbg(HW, priv, "Initializing port\n"); 1682 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1683 if (err) { 1684 en_err(priv, "Failed Initializing port\n"); 1685 goto tx_err; 1686 } 1687 1688 /* Attach rx QP to bradcast address */ 1689 memset(&mc_list[10], 0xff, ETH_ALEN); 1690 mc_list[5] = priv->port; /* needed for B0 steering support */ 1691 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1692 priv->port, 0, MLX4_PROT_ETH, 1693 &priv->broadcast_id)) 1694 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1695 1696 /* Must redo promiscuous mode setup. */ 1697 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1698 1699 /* Schedule multicast task to populate multicast list */ 1700 queue_work(mdev->workqueue, &priv->rx_mode_task); 1701 1702 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap); 1703 1704 priv->port_up = true; 1705 netif_tx_start_all_queues(dev); 1706 netif_device_attach(dev); 1707 1708 return 0; 1709 1710 tx_err: 1711 while (tx_index--) { 1712 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]); 1713 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]); 1714 } 1715 mlx4_en_destroy_drop_qp(priv); 1716 rss_err: 1717 mlx4_en_release_rss_steer(priv); 1718 mac_err: 1719 mlx4_en_put_qp(priv); 1720 cq_err: 1721 while (rx_index--) 1722 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); 1723 for (i = 0; i < priv->rx_ring_num; i++) 1724 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1725 1726 return err; /* need to close devices */ 1727 } 1728 1729 1730 void mlx4_en_stop_port(struct net_device *dev, int detach) 1731 { 1732 struct mlx4_en_priv *priv = netdev_priv(dev); 1733 struct mlx4_en_dev *mdev = priv->mdev; 1734 struct mlx4_en_mc_list *mclist, *tmp; 1735 struct ethtool_flow_id *flow, *tmp_flow; 1736 int i; 1737 u8 mc_list[16] = {0}; 1738 1739 if (!priv->port_up) { 1740 en_dbg(DRV, priv, "stop port called while port already down\n"); 1741 return; 1742 } 1743 1744 /* close port*/ 1745 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1746 1747 /* Synchronize with tx routine */ 1748 netif_tx_lock_bh(dev); 1749 if (detach) 1750 netif_device_detach(dev); 1751 netif_tx_stop_all_queues(dev); 1752 netif_tx_unlock_bh(dev); 1753 1754 netif_tx_disable(dev); 1755 1756 /* Set port as not active */ 1757 priv->port_up = false; 1758 1759 /* Promsicuous mode */ 1760 if (mdev->dev->caps.steering_mode == 1761 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1762 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | 1763 MLX4_EN_FLAG_MC_PROMISC); 1764 mlx4_flow_steer_promisc_remove(mdev->dev, 1765 priv->port, 1766 MLX4_FS_ALL_DEFAULT); 1767 mlx4_flow_steer_promisc_remove(mdev->dev, 1768 priv->port, 1769 MLX4_FS_MC_DEFAULT); 1770 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { 1771 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 1772 1773 /* Disable promiscouos mode */ 1774 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, 1775 priv->port); 1776 1777 /* Disable Multicast promisc */ 1778 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1779 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, 1780 priv->port); 1781 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1782 } 1783 } 1784 1785 /* Detach All multicasts */ 1786 memset(&mc_list[10], 0xff, ETH_ALEN); 1787 mc_list[5] = priv->port; /* needed for B0 steering support */ 1788 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1789 MLX4_PROT_ETH, priv->broadcast_id); 1790 list_for_each_entry(mclist, &priv->curr_list, list) { 1791 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1792 mc_list[5] = priv->port; 1793 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, 1794 mc_list, MLX4_PROT_ETH, mclist->reg_id); 1795 } 1796 mlx4_en_clear_list(dev); 1797 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1798 list_del(&mclist->list); 1799 kfree(mclist); 1800 } 1801 1802 /* Flush multicast filter */ 1803 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); 1804 1805 /* Remove flow steering rules for the port*/ 1806 if (mdev->dev->caps.steering_mode == 1807 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1808 ASSERT_RTNL(); 1809 list_for_each_entry_safe(flow, tmp_flow, 1810 &priv->ethtool_list, list) { 1811 mlx4_flow_detach(mdev->dev, flow->id); 1812 list_del(&flow->list); 1813 } 1814 } 1815 1816 mlx4_en_destroy_drop_qp(priv); 1817 1818 /* Free TX Rings */ 1819 for (i = 0; i < priv->tx_ring_num; i++) { 1820 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]); 1821 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]); 1822 } 1823 msleep(10); 1824 1825 for (i = 0; i < priv->tx_ring_num; i++) 1826 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]); 1827 1828 /* Free RSS qps */ 1829 mlx4_en_release_rss_steer(priv); 1830 1831 /* Unregister Mac address for the port */ 1832 mlx4_en_put_qp(priv); 1833 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN)) 1834 mdev->mac_removed[priv->port] = 1; 1835 1836 /* Free RX Rings */ 1837 for (i = 0; i < priv->rx_ring_num; i++) { 1838 struct mlx4_en_cq *cq = priv->rx_cq[i]; 1839 1840 local_bh_disable(); 1841 while (!mlx4_en_cq_lock_napi(cq)) { 1842 pr_info("CQ %d locked\n", i); 1843 mdelay(1); 1844 } 1845 local_bh_enable(); 1846 1847 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state)) 1848 msleep(1); 1849 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1850 mlx4_en_deactivate_cq(priv, cq); 1851 } 1852 } 1853 1854 static void mlx4_en_restart(struct work_struct *work) 1855 { 1856 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1857 watchdog_task); 1858 struct mlx4_en_dev *mdev = priv->mdev; 1859 struct net_device *dev = priv->dev; 1860 1861 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1862 1863 mutex_lock(&mdev->state_lock); 1864 if (priv->port_up) { 1865 mlx4_en_stop_port(dev, 1); 1866 if (mlx4_en_start_port(dev)) 1867 en_err(priv, "Failed restarting port %d\n", priv->port); 1868 } 1869 mutex_unlock(&mdev->state_lock); 1870 } 1871 1872 static void mlx4_en_clear_stats(struct net_device *dev) 1873 { 1874 struct mlx4_en_priv *priv = netdev_priv(dev); 1875 struct mlx4_en_dev *mdev = priv->mdev; 1876 int i; 1877 1878 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1879 en_dbg(HW, priv, "Failed dumping statistics\n"); 1880 1881 memset(&priv->stats, 0, sizeof(priv->stats)); 1882 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1883 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1884 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1885 1886 for (i = 0; i < priv->tx_ring_num; i++) { 1887 priv->tx_ring[i]->bytes = 0; 1888 priv->tx_ring[i]->packets = 0; 1889 priv->tx_ring[i]->tx_csum = 0; 1890 } 1891 for (i = 0; i < priv->rx_ring_num; i++) { 1892 priv->rx_ring[i]->bytes = 0; 1893 priv->rx_ring[i]->packets = 0; 1894 priv->rx_ring[i]->csum_ok = 0; 1895 priv->rx_ring[i]->csum_none = 0; 1896 } 1897 } 1898 1899 static int mlx4_en_open(struct net_device *dev) 1900 { 1901 struct mlx4_en_priv *priv = netdev_priv(dev); 1902 struct mlx4_en_dev *mdev = priv->mdev; 1903 int err = 0; 1904 1905 mutex_lock(&mdev->state_lock); 1906 1907 if (!mdev->device_up) { 1908 en_err(priv, "Cannot open - device down/disabled\n"); 1909 err = -EBUSY; 1910 goto out; 1911 } 1912 1913 /* Reset HW statistics and SW counters */ 1914 mlx4_en_clear_stats(dev); 1915 1916 err = mlx4_en_start_port(dev); 1917 if (err) 1918 en_err(priv, "Failed starting port:%d\n", priv->port); 1919 1920 out: 1921 mutex_unlock(&mdev->state_lock); 1922 return err; 1923 } 1924 1925 1926 static int mlx4_en_close(struct net_device *dev) 1927 { 1928 struct mlx4_en_priv *priv = netdev_priv(dev); 1929 struct mlx4_en_dev *mdev = priv->mdev; 1930 1931 en_dbg(IFDOWN, priv, "Close port called\n"); 1932 1933 mutex_lock(&mdev->state_lock); 1934 1935 mlx4_en_stop_port(dev, 0); 1936 netif_carrier_off(dev); 1937 1938 mutex_unlock(&mdev->state_lock); 1939 return 0; 1940 } 1941 1942 void mlx4_en_free_resources(struct mlx4_en_priv *priv) 1943 { 1944 int i; 1945 1946 #ifdef CONFIG_RFS_ACCEL 1947 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap); 1948 priv->dev->rx_cpu_rmap = NULL; 1949 #endif 1950 1951 for (i = 0; i < priv->tx_ring_num; i++) { 1952 if (priv->tx_ring && priv->tx_ring[i]) 1953 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 1954 if (priv->tx_cq && priv->tx_cq[i]) 1955 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 1956 } 1957 1958 for (i = 0; i < priv->rx_ring_num; i++) { 1959 if (priv->rx_ring[i]) 1960 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 1961 priv->prof->rx_ring_size, priv->stride); 1962 if (priv->rx_cq[i]) 1963 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 1964 } 1965 1966 if (priv->base_tx_qpn) { 1967 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num); 1968 priv->base_tx_qpn = 0; 1969 } 1970 } 1971 1972 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 1973 { 1974 struct mlx4_en_port_profile *prof = priv->prof; 1975 int i; 1976 int err; 1977 int node; 1978 1979 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn); 1980 if (err) { 1981 en_err(priv, "failed reserving range for TX rings\n"); 1982 return err; 1983 } 1984 1985 /* Create tx Rings */ 1986 for (i = 0; i < priv->tx_ring_num; i++) { 1987 node = cpu_to_node(i % num_online_cpus()); 1988 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 1989 prof->tx_ring_size, i, TX, node)) 1990 goto err; 1991 1992 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], 1993 priv->base_tx_qpn + i, 1994 prof->tx_ring_size, TXBB_SIZE, 1995 node, i)) 1996 goto err; 1997 } 1998 1999 /* Create rx Rings */ 2000 for (i = 0; i < priv->rx_ring_num; i++) { 2001 node = cpu_to_node(i % num_online_cpus()); 2002 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 2003 prof->rx_ring_size, i, RX, node)) 2004 goto err; 2005 2006 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 2007 prof->rx_ring_size, priv->stride, 2008 node)) 2009 goto err; 2010 } 2011 2012 #ifdef CONFIG_RFS_ACCEL 2013 if (priv->mdev->dev->caps.comp_pool) { 2014 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool); 2015 if (!priv->dev->rx_cpu_rmap) 2016 goto err; 2017 } 2018 #endif 2019 2020 return 0; 2021 2022 err: 2023 en_err(priv, "Failed to allocate NIC resources\n"); 2024 for (i = 0; i < priv->rx_ring_num; i++) { 2025 if (priv->rx_ring[i]) 2026 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2027 prof->rx_ring_size, 2028 priv->stride); 2029 if (priv->rx_cq[i]) 2030 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2031 } 2032 for (i = 0; i < priv->tx_ring_num; i++) { 2033 if (priv->tx_ring[i]) 2034 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2035 if (priv->tx_cq[i]) 2036 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2037 } 2038 return -ENOMEM; 2039 } 2040 2041 2042 void mlx4_en_destroy_netdev(struct net_device *dev) 2043 { 2044 struct mlx4_en_priv *priv = netdev_priv(dev); 2045 struct mlx4_en_dev *mdev = priv->mdev; 2046 2047 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2048 2049 /* Unregister device - this will close the port if it was up */ 2050 if (priv->registered) 2051 unregister_netdev(dev); 2052 2053 if (priv->allocated) 2054 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2055 2056 cancel_delayed_work(&priv->stats_task); 2057 cancel_delayed_work(&priv->service_task); 2058 /* flush any pending task for this netdev */ 2059 flush_workqueue(mdev->workqueue); 2060 2061 /* Detach the netdev so tasks would not attempt to access it */ 2062 mutex_lock(&mdev->state_lock); 2063 mdev->pndev[priv->port] = NULL; 2064 mutex_unlock(&mdev->state_lock); 2065 2066 mlx4_en_free_resources(priv); 2067 2068 kfree(priv->tx_ring); 2069 kfree(priv->tx_cq); 2070 2071 free_netdev(dev); 2072 } 2073 2074 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2075 { 2076 struct mlx4_en_priv *priv = netdev_priv(dev); 2077 struct mlx4_en_dev *mdev = priv->mdev; 2078 int err = 0; 2079 2080 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2081 dev->mtu, new_mtu); 2082 2083 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 2084 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 2085 return -EPERM; 2086 } 2087 dev->mtu = new_mtu; 2088 2089 if (netif_running(dev)) { 2090 mutex_lock(&mdev->state_lock); 2091 if (!mdev->device_up) { 2092 /* NIC is probably restarting - let watchdog task reset 2093 * the port */ 2094 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2095 } else { 2096 mlx4_en_stop_port(dev, 1); 2097 err = mlx4_en_start_port(dev); 2098 if (err) { 2099 en_err(priv, "Failed restarting port:%d\n", 2100 priv->port); 2101 queue_work(mdev->workqueue, &priv->watchdog_task); 2102 } 2103 } 2104 mutex_unlock(&mdev->state_lock); 2105 } 2106 return 0; 2107 } 2108 2109 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2110 { 2111 struct mlx4_en_priv *priv = netdev_priv(dev); 2112 struct mlx4_en_dev *mdev = priv->mdev; 2113 struct hwtstamp_config config; 2114 2115 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2116 return -EFAULT; 2117 2118 /* reserved for future extensions */ 2119 if (config.flags) 2120 return -EINVAL; 2121 2122 /* device doesn't support time stamping */ 2123 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2124 return -EINVAL; 2125 2126 /* TX HW timestamp */ 2127 switch (config.tx_type) { 2128 case HWTSTAMP_TX_OFF: 2129 case HWTSTAMP_TX_ON: 2130 break; 2131 default: 2132 return -ERANGE; 2133 } 2134 2135 /* RX HW timestamp */ 2136 switch (config.rx_filter) { 2137 case HWTSTAMP_FILTER_NONE: 2138 break; 2139 case HWTSTAMP_FILTER_ALL: 2140 case HWTSTAMP_FILTER_SOME: 2141 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2142 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2143 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2144 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2145 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2146 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2147 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2148 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2149 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2150 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2151 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2152 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2153 config.rx_filter = HWTSTAMP_FILTER_ALL; 2154 break; 2155 default: 2156 return -ERANGE; 2157 } 2158 2159 if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) { 2160 config.tx_type = HWTSTAMP_TX_OFF; 2161 config.rx_filter = HWTSTAMP_FILTER_NONE; 2162 } 2163 2164 return copy_to_user(ifr->ifr_data, &config, 2165 sizeof(config)) ? -EFAULT : 0; 2166 } 2167 2168 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2169 { 2170 struct mlx4_en_priv *priv = netdev_priv(dev); 2171 2172 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2173 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2174 } 2175 2176 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2177 { 2178 switch (cmd) { 2179 case SIOCSHWTSTAMP: 2180 return mlx4_en_hwtstamp_set(dev, ifr); 2181 case SIOCGHWTSTAMP: 2182 return mlx4_en_hwtstamp_get(dev, ifr); 2183 default: 2184 return -EOPNOTSUPP; 2185 } 2186 } 2187 2188 static int mlx4_en_set_features(struct net_device *netdev, 2189 netdev_features_t features) 2190 { 2191 struct mlx4_en_priv *priv = netdev_priv(netdev); 2192 2193 if (features & NETIF_F_LOOPBACK) 2194 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK); 2195 else 2196 priv->ctrl_flags &= 2197 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK); 2198 2199 mlx4_en_update_loopback_state(netdev, features); 2200 2201 return 0; 2202 2203 } 2204 2205 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2206 { 2207 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2208 struct mlx4_en_dev *mdev = en_priv->mdev; 2209 u64 mac_u64 = mlx4_en_mac_to_u64(mac); 2210 2211 if (!is_valid_ether_addr(mac)) 2212 return -EINVAL; 2213 2214 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2215 } 2216 2217 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) 2218 { 2219 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2220 struct mlx4_en_dev *mdev = en_priv->mdev; 2221 2222 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos); 2223 } 2224 2225 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2226 { 2227 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2228 struct mlx4_en_dev *mdev = en_priv->mdev; 2229 2230 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2231 } 2232 2233 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2234 { 2235 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2236 struct mlx4_en_dev *mdev = en_priv->mdev; 2237 2238 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2239 } 2240 2241 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2242 { 2243 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2244 struct mlx4_en_dev *mdev = en_priv->mdev; 2245 2246 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2247 } 2248 2249 #define PORT_ID_BYTE_LEN 8 2250 static int mlx4_en_get_phys_port_id(struct net_device *dev, 2251 struct netdev_phys_port_id *ppid) 2252 { 2253 struct mlx4_en_priv *priv = netdev_priv(dev); 2254 struct mlx4_dev *mdev = priv->mdev->dev; 2255 int i; 2256 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2257 2258 if (!phys_port_id) 2259 return -EOPNOTSUPP; 2260 2261 ppid->id_len = sizeof(phys_port_id); 2262 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2263 ppid->id[i] = phys_port_id & 0xff; 2264 phys_port_id >>= 8; 2265 } 2266 return 0; 2267 } 2268 2269 static const struct net_device_ops mlx4_netdev_ops = { 2270 .ndo_open = mlx4_en_open, 2271 .ndo_stop = mlx4_en_close, 2272 .ndo_start_xmit = mlx4_en_xmit, 2273 .ndo_select_queue = mlx4_en_select_queue, 2274 .ndo_get_stats = mlx4_en_get_stats, 2275 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2276 .ndo_set_mac_address = mlx4_en_set_mac, 2277 .ndo_validate_addr = eth_validate_addr, 2278 .ndo_change_mtu = mlx4_en_change_mtu, 2279 .ndo_do_ioctl = mlx4_en_ioctl, 2280 .ndo_tx_timeout = mlx4_en_tx_timeout, 2281 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2282 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2283 #ifdef CONFIG_NET_POLL_CONTROLLER 2284 .ndo_poll_controller = mlx4_en_netpoll, 2285 #endif 2286 .ndo_set_features = mlx4_en_set_features, 2287 .ndo_setup_tc = mlx4_en_setup_tc, 2288 #ifdef CONFIG_RFS_ACCEL 2289 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2290 #endif 2291 #ifdef CONFIG_NET_RX_BUSY_POLL 2292 .ndo_busy_poll = mlx4_en_low_latency_recv, 2293 #endif 2294 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2295 }; 2296 2297 static const struct net_device_ops mlx4_netdev_ops_master = { 2298 .ndo_open = mlx4_en_open, 2299 .ndo_stop = mlx4_en_close, 2300 .ndo_start_xmit = mlx4_en_xmit, 2301 .ndo_select_queue = mlx4_en_select_queue, 2302 .ndo_get_stats = mlx4_en_get_stats, 2303 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2304 .ndo_set_mac_address = mlx4_en_set_mac, 2305 .ndo_validate_addr = eth_validate_addr, 2306 .ndo_change_mtu = mlx4_en_change_mtu, 2307 .ndo_tx_timeout = mlx4_en_tx_timeout, 2308 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2309 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2310 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2311 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2312 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2313 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2314 .ndo_get_vf_config = mlx4_en_get_vf_config, 2315 #ifdef CONFIG_NET_POLL_CONTROLLER 2316 .ndo_poll_controller = mlx4_en_netpoll, 2317 #endif 2318 .ndo_set_features = mlx4_en_set_features, 2319 .ndo_setup_tc = mlx4_en_setup_tc, 2320 #ifdef CONFIG_RFS_ACCEL 2321 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2322 #endif 2323 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2324 }; 2325 2326 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 2327 struct mlx4_en_port_profile *prof) 2328 { 2329 struct net_device *dev; 2330 struct mlx4_en_priv *priv; 2331 int i; 2332 int err; 2333 u64 mac_u64; 2334 2335 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 2336 MAX_TX_RINGS, MAX_RX_RINGS); 2337 if (dev == NULL) 2338 return -ENOMEM; 2339 2340 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 2341 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 2342 2343 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev); 2344 dev->dev_id = port - 1; 2345 2346 /* 2347 * Initialize driver private data 2348 */ 2349 2350 priv = netdev_priv(dev); 2351 memset(priv, 0, sizeof(struct mlx4_en_priv)); 2352 priv->dev = dev; 2353 priv->mdev = mdev; 2354 priv->ddev = &mdev->pdev->dev; 2355 priv->prof = prof; 2356 priv->port = port; 2357 priv->port_up = false; 2358 priv->flags = prof->flags; 2359 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 2360 MLX4_WQE_CTRL_SOLICITED); 2361 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 2362 priv->tx_ring_num = prof->tx_ring_num; 2363 2364 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 2365 GFP_KERNEL); 2366 if (!priv->tx_ring) { 2367 err = -ENOMEM; 2368 goto out; 2369 } 2370 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 2371 GFP_KERNEL); 2372 if (!priv->tx_cq) { 2373 err = -ENOMEM; 2374 goto out; 2375 } 2376 priv->rx_ring_num = prof->rx_ring_num; 2377 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 2378 priv->mac_index = -1; 2379 priv->msg_enable = MLX4_EN_MSG_LEVEL; 2380 spin_lock_init(&priv->stats_lock); 2381 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 2382 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 2383 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 2384 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 2385 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 2386 #ifdef CONFIG_MLX4_EN_DCB 2387 if (!mlx4_is_slave(priv->mdev->dev)) { 2388 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) { 2389 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 2390 } else { 2391 en_info(priv, "enabling only PFC DCB ops\n"); 2392 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 2393 } 2394 } 2395 #endif 2396 2397 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 2398 INIT_HLIST_HEAD(&priv->mac_hash[i]); 2399 2400 /* Query for default mac and max mtu */ 2401 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 2402 2403 /* Set default MAC */ 2404 dev->addr_len = ETH_ALEN; 2405 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 2406 if (!is_valid_ether_addr(dev->dev_addr)) { 2407 if (mlx4_is_slave(priv->mdev->dev)) { 2408 eth_hw_addr_random(dev); 2409 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 2410 mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr); 2411 mdev->dev->caps.def_mac[priv->port] = mac_u64; 2412 } else { 2413 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 2414 priv->port, dev->dev_addr); 2415 err = -EINVAL; 2416 goto out; 2417 } 2418 } 2419 2420 memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac)); 2421 2422 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2423 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2424 err = mlx4_en_alloc_resources(priv); 2425 if (err) 2426 goto out; 2427 2428 #ifdef CONFIG_RFS_ACCEL 2429 INIT_LIST_HEAD(&priv->filters); 2430 spin_lock_init(&priv->filters_lock); 2431 #endif 2432 2433 /* Initialize time stamping config */ 2434 priv->hwtstamp_config.flags = 0; 2435 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 2436 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 2437 2438 /* Allocate page for receive rings */ 2439 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 2440 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE); 2441 if (err) { 2442 en_err(priv, "Failed to allocate page for rx qps\n"); 2443 goto out; 2444 } 2445 priv->allocated = 1; 2446 2447 /* 2448 * Initialize netdev entry points 2449 */ 2450 if (mlx4_is_master(priv->mdev->dev)) 2451 dev->netdev_ops = &mlx4_netdev_ops_master; 2452 else 2453 dev->netdev_ops = &mlx4_netdev_ops; 2454 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 2455 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 2456 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 2457 2458 SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops); 2459 2460 /* 2461 * Set driver features 2462 */ 2463 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2464 if (mdev->LSO_support) 2465 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2466 2467 dev->vlan_features = dev->hw_features; 2468 2469 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 2470 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 2471 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 2472 NETIF_F_HW_VLAN_CTAG_FILTER; 2473 dev->hw_features |= NETIF_F_LOOPBACK; 2474 2475 if (mdev->dev->caps.steering_mode == 2476 MLX4_STEERING_MODE_DEVICE_MANAGED) 2477 dev->hw_features |= NETIF_F_NTUPLE; 2478 2479 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 2480 dev->priv_flags |= IFF_UNICAST_FLT; 2481 2482 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 2483 dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2484 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL; 2485 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; 2486 dev->features |= NETIF_F_GSO_UDP_TUNNEL; 2487 } 2488 2489 mdev->pndev[port] = dev; 2490 2491 netif_carrier_off(dev); 2492 mlx4_en_set_default_moderation(priv); 2493 2494 err = register_netdev(dev); 2495 if (err) { 2496 en_err(priv, "Netdev registration failed for port %d\n", port); 2497 goto out; 2498 } 2499 priv->registered = 1; 2500 2501 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 2502 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 2503 2504 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 2505 2506 /* Configure port */ 2507 mlx4_en_calc_rx_buf(dev); 2508 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 2509 priv->rx_skb_size + ETH_FCS_LEN, 2510 prof->tx_pause, prof->tx_ppp, 2511 prof->rx_pause, prof->rx_ppp); 2512 if (err) { 2513 en_err(priv, "Failed setting port general configurations " 2514 "for port %d, with error %d\n", priv->port, err); 2515 goto out; 2516 } 2517 2518 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 2519 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC); 2520 if (err) { 2521 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 2522 err); 2523 goto out; 2524 } 2525 } 2526 2527 /* Init port */ 2528 en_warn(priv, "Initializing port\n"); 2529 err = mlx4_INIT_PORT(mdev->dev, priv->port); 2530 if (err) { 2531 en_err(priv, "Failed Initializing port\n"); 2532 goto out; 2533 } 2534 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 2535 2536 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2537 queue_delayed_work(mdev->workqueue, &priv->service_task, 2538 SERVICE_TASK_DELAY); 2539 2540 return 0; 2541 2542 out: 2543 mlx4_en_destroy_netdev(dev); 2544 return err; 2545 } 2546 2547