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 44 #include <linux/mlx4/driver.h> 45 #include <linux/mlx4/device.h> 46 #include <linux/mlx4/cmd.h> 47 #include <linux/mlx4/cq.h> 48 49 #include "mlx4_en.h" 50 #include "en_port.h" 51 52 int mlx4_en_setup_tc(struct net_device *dev, u8 up) 53 { 54 struct mlx4_en_priv *priv = netdev_priv(dev); 55 int i; 56 unsigned int offset = 0; 57 58 if (up && up != MLX4_EN_NUM_UP) 59 return -EINVAL; 60 61 netdev_set_num_tc(dev, up); 62 63 /* Partition Tx queues evenly amongst UP's */ 64 for (i = 0; i < up; i++) { 65 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset); 66 offset += priv->num_tx_rings_p_up; 67 } 68 69 return 0; 70 } 71 72 #ifdef CONFIG_NET_RX_BUSY_POLL 73 /* must be called with local_bh_disable()d */ 74 static int mlx4_en_low_latency_recv(struct napi_struct *napi) 75 { 76 struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi); 77 struct net_device *dev = cq->dev; 78 struct mlx4_en_priv *priv = netdev_priv(dev); 79 struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring]; 80 int done; 81 82 if (!priv->port_up) 83 return LL_FLUSH_FAILED; 84 85 if (!mlx4_en_cq_lock_poll(cq)) 86 return LL_FLUSH_BUSY; 87 88 done = mlx4_en_process_rx_cq(dev, cq, 4); 89 if (likely(done)) 90 rx_ring->cleaned += done; 91 else 92 rx_ring->misses++; 93 94 mlx4_en_cq_unlock_poll(cq); 95 96 return done; 97 } 98 #endif /* CONFIG_NET_RX_BUSY_POLL */ 99 100 #ifdef CONFIG_RFS_ACCEL 101 102 struct mlx4_en_filter { 103 struct list_head next; 104 struct work_struct work; 105 106 u8 ip_proto; 107 __be32 src_ip; 108 __be32 dst_ip; 109 __be16 src_port; 110 __be16 dst_port; 111 112 int rxq_index; 113 struct mlx4_en_priv *priv; 114 u32 flow_id; /* RFS infrastructure id */ 115 int id; /* mlx4_en driver id */ 116 u64 reg_id; /* Flow steering API id */ 117 u8 activated; /* Used to prevent expiry before filter 118 * is attached 119 */ 120 struct hlist_node filter_chain; 121 }; 122 123 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv); 124 125 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto) 126 { 127 switch (ip_proto) { 128 case IPPROTO_UDP: 129 return MLX4_NET_TRANS_RULE_ID_UDP; 130 case IPPROTO_TCP: 131 return MLX4_NET_TRANS_RULE_ID_TCP; 132 default: 133 return MLX4_NET_TRANS_RULE_NUM; 134 } 135 }; 136 137 static void mlx4_en_filter_work(struct work_struct *work) 138 { 139 struct mlx4_en_filter *filter = container_of(work, 140 struct mlx4_en_filter, 141 work); 142 struct mlx4_en_priv *priv = filter->priv; 143 struct mlx4_spec_list spec_tcp_udp = { 144 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto), 145 { 146 .tcp_udp = { 147 .dst_port = filter->dst_port, 148 .dst_port_msk = (__force __be16)-1, 149 .src_port = filter->src_port, 150 .src_port_msk = (__force __be16)-1, 151 }, 152 }, 153 }; 154 struct mlx4_spec_list spec_ip = { 155 .id = MLX4_NET_TRANS_RULE_ID_IPV4, 156 { 157 .ipv4 = { 158 .dst_ip = filter->dst_ip, 159 .dst_ip_msk = (__force __be32)-1, 160 .src_ip = filter->src_ip, 161 .src_ip_msk = (__force __be32)-1, 162 }, 163 }, 164 }; 165 struct mlx4_spec_list spec_eth = { 166 .id = MLX4_NET_TRANS_RULE_ID_ETH, 167 }; 168 struct mlx4_net_trans_rule rule = { 169 .list = LIST_HEAD_INIT(rule.list), 170 .queue_mode = MLX4_NET_TRANS_Q_LIFO, 171 .exclusive = 1, 172 .allow_loopback = 1, 173 .promisc_mode = MLX4_FS_REGULAR, 174 .port = priv->port, 175 .priority = MLX4_DOMAIN_RFS, 176 }; 177 int rc; 178 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 179 180 if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) { 181 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n", 182 filter->ip_proto); 183 goto ignore; 184 } 185 list_add_tail(&spec_eth.list, &rule.list); 186 list_add_tail(&spec_ip.list, &rule.list); 187 list_add_tail(&spec_tcp_udp.list, &rule.list); 188 189 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn; 190 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN); 191 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 192 193 filter->activated = 0; 194 195 if (filter->reg_id) { 196 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 197 if (rc && rc != -ENOENT) 198 en_err(priv, "Error detaching flow. rc = %d\n", rc); 199 } 200 201 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id); 202 if (rc) 203 en_err(priv, "Error attaching flow. err = %d\n", rc); 204 205 ignore: 206 mlx4_en_filter_rfs_expire(priv); 207 208 filter->activated = 1; 209 } 210 211 static inline struct hlist_head * 212 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 213 __be16 src_port, __be16 dst_port) 214 { 215 unsigned long l; 216 int bucket_idx; 217 218 l = (__force unsigned long)src_port | 219 ((__force unsigned long)dst_port << 2); 220 l ^= (__force unsigned long)(src_ip ^ dst_ip); 221 222 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT); 223 224 return &priv->filter_hash[bucket_idx]; 225 } 226 227 static struct mlx4_en_filter * 228 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip, 229 __be32 dst_ip, u8 ip_proto, __be16 src_port, 230 __be16 dst_port, u32 flow_id) 231 { 232 struct mlx4_en_filter *filter = NULL; 233 234 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC); 235 if (!filter) 236 return NULL; 237 238 filter->priv = priv; 239 filter->rxq_index = rxq_index; 240 INIT_WORK(&filter->work, mlx4_en_filter_work); 241 242 filter->src_ip = src_ip; 243 filter->dst_ip = dst_ip; 244 filter->ip_proto = ip_proto; 245 filter->src_port = src_port; 246 filter->dst_port = dst_port; 247 248 filter->flow_id = flow_id; 249 250 filter->id = priv->last_filter_id++ % RPS_NO_FILTER; 251 252 list_add_tail(&filter->next, &priv->filters); 253 hlist_add_head(&filter->filter_chain, 254 filter_hash_bucket(priv, src_ip, dst_ip, src_port, 255 dst_port)); 256 257 return filter; 258 } 259 260 static void mlx4_en_filter_free(struct mlx4_en_filter *filter) 261 { 262 struct mlx4_en_priv *priv = filter->priv; 263 int rc; 264 265 list_del(&filter->next); 266 267 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 268 if (rc && rc != -ENOENT) 269 en_err(priv, "Error detaching flow. rc = %d\n", rc); 270 271 kfree(filter); 272 } 273 274 static inline struct mlx4_en_filter * 275 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 276 u8 ip_proto, __be16 src_port, __be16 dst_port) 277 { 278 struct mlx4_en_filter *filter; 279 struct mlx4_en_filter *ret = NULL; 280 281 hlist_for_each_entry(filter, 282 filter_hash_bucket(priv, src_ip, dst_ip, 283 src_port, dst_port), 284 filter_chain) { 285 if (filter->src_ip == src_ip && 286 filter->dst_ip == dst_ip && 287 filter->ip_proto == ip_proto && 288 filter->src_port == src_port && 289 filter->dst_port == dst_port) { 290 ret = filter; 291 break; 292 } 293 } 294 295 return ret; 296 } 297 298 static int 299 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 300 u16 rxq_index, u32 flow_id) 301 { 302 struct mlx4_en_priv *priv = netdev_priv(net_dev); 303 struct mlx4_en_filter *filter; 304 const struct iphdr *ip; 305 const __be16 *ports; 306 u8 ip_proto; 307 __be32 src_ip; 308 __be32 dst_ip; 309 __be16 src_port; 310 __be16 dst_port; 311 int nhoff = skb_network_offset(skb); 312 int ret = 0; 313 314 if (skb->protocol != htons(ETH_P_IP)) 315 return -EPROTONOSUPPORT; 316 317 ip = (const struct iphdr *)(skb->data + nhoff); 318 if (ip_is_fragment(ip)) 319 return -EPROTONOSUPPORT; 320 321 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP)) 322 return -EPROTONOSUPPORT; 323 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); 324 325 ip_proto = ip->protocol; 326 src_ip = ip->saddr; 327 dst_ip = ip->daddr; 328 src_port = ports[0]; 329 dst_port = ports[1]; 330 331 spin_lock_bh(&priv->filters_lock); 332 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto, 333 src_port, dst_port); 334 if (filter) { 335 if (filter->rxq_index == rxq_index) 336 goto out; 337 338 filter->rxq_index = rxq_index; 339 } else { 340 filter = mlx4_en_filter_alloc(priv, rxq_index, 341 src_ip, dst_ip, ip_proto, 342 src_port, dst_port, flow_id); 343 if (!filter) { 344 ret = -ENOMEM; 345 goto err; 346 } 347 } 348 349 queue_work(priv->mdev->workqueue, &filter->work); 350 351 out: 352 ret = filter->id; 353 err: 354 spin_unlock_bh(&priv->filters_lock); 355 356 return ret; 357 } 358 359 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv) 360 { 361 struct mlx4_en_filter *filter, *tmp; 362 LIST_HEAD(del_list); 363 364 spin_lock_bh(&priv->filters_lock); 365 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 366 list_move(&filter->next, &del_list); 367 hlist_del(&filter->filter_chain); 368 } 369 spin_unlock_bh(&priv->filters_lock); 370 371 list_for_each_entry_safe(filter, tmp, &del_list, next) { 372 cancel_work_sync(&filter->work); 373 mlx4_en_filter_free(filter); 374 } 375 } 376 377 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv) 378 { 379 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL; 380 LIST_HEAD(del_list); 381 int i = 0; 382 383 spin_lock_bh(&priv->filters_lock); 384 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 385 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA) 386 break; 387 388 if (filter->activated && 389 !work_pending(&filter->work) && 390 rps_may_expire_flow(priv->dev, 391 filter->rxq_index, filter->flow_id, 392 filter->id)) { 393 list_move(&filter->next, &del_list); 394 hlist_del(&filter->filter_chain); 395 } else 396 last_filter = filter; 397 398 i++; 399 } 400 401 if (last_filter && (&last_filter->next != priv->filters.next)) 402 list_move(&priv->filters, &last_filter->next); 403 404 spin_unlock_bh(&priv->filters_lock); 405 406 list_for_each_entry_safe(filter, tmp, &del_list, next) 407 mlx4_en_filter_free(filter); 408 } 409 #endif 410 411 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev, 412 __be16 proto, u16 vid) 413 { 414 struct mlx4_en_priv *priv = netdev_priv(dev); 415 struct mlx4_en_dev *mdev = priv->mdev; 416 int err; 417 int idx; 418 419 en_dbg(HW, priv, "adding VLAN:%d\n", vid); 420 421 set_bit(vid, priv->active_vlans); 422 423 /* Add VID to port VLAN filter */ 424 mutex_lock(&mdev->state_lock); 425 if (mdev->device_up && priv->port_up) { 426 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 427 if (err) 428 en_err(priv, "Failed configuring VLAN filter\n"); 429 } 430 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx)) 431 en_dbg(HW, priv, "failed adding vlan %d\n", vid); 432 mutex_unlock(&mdev->state_lock); 433 434 return 0; 435 } 436 437 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, 438 __be16 proto, u16 vid) 439 { 440 struct mlx4_en_priv *priv = netdev_priv(dev); 441 struct mlx4_en_dev *mdev = priv->mdev; 442 int err; 443 444 en_dbg(HW, priv, "Killing VID:%d\n", vid); 445 446 clear_bit(vid, priv->active_vlans); 447 448 /* Remove VID from port VLAN filter */ 449 mutex_lock(&mdev->state_lock); 450 mlx4_unregister_vlan(mdev->dev, priv->port, vid); 451 452 if (mdev->device_up && priv->port_up) { 453 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 454 if (err) 455 en_err(priv, "Failed configuring VLAN filter\n"); 456 } 457 mutex_unlock(&mdev->state_lock); 458 459 return 0; 460 } 461 462 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) 463 { 464 int i; 465 for (i = ETH_ALEN - 1; i >= 0; --i) { 466 dst_mac[i] = src_mac & 0xff; 467 src_mac >>= 8; 468 } 469 memset(&dst_mac[ETH_ALEN], 0, 2); 470 } 471 472 473 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr, 474 int qpn, u64 *reg_id) 475 { 476 int err; 477 struct mlx4_spec_list spec_eth_outer = { {NULL} }; 478 struct mlx4_spec_list spec_vxlan = { {NULL} }; 479 struct mlx4_spec_list spec_eth_inner = { {NULL} }; 480 481 struct mlx4_net_trans_rule rule = { 482 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 483 .exclusive = 0, 484 .allow_loopback = 1, 485 .promisc_mode = MLX4_FS_REGULAR, 486 .priority = MLX4_DOMAIN_NIC, 487 }; 488 489 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 490 491 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 492 return 0; /* do nothing */ 493 494 rule.port = priv->port; 495 rule.qpn = qpn; 496 INIT_LIST_HEAD(&rule.list); 497 498 spec_eth_outer.id = MLX4_NET_TRANS_RULE_ID_ETH; 499 memcpy(spec_eth_outer.eth.dst_mac, addr, ETH_ALEN); 500 memcpy(spec_eth_outer.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 501 502 spec_vxlan.id = MLX4_NET_TRANS_RULE_ID_VXLAN; /* any vxlan header */ 503 spec_eth_inner.id = MLX4_NET_TRANS_RULE_ID_ETH; /* any inner eth header */ 504 505 list_add_tail(&spec_eth_outer.list, &rule.list); 506 list_add_tail(&spec_vxlan.list, &rule.list); 507 list_add_tail(&spec_eth_inner.list, &rule.list); 508 509 err = mlx4_flow_attach(priv->mdev->dev, &rule, reg_id); 510 if (err) { 511 en_err(priv, "failed to add vxlan steering rule, err %d\n", err); 512 return err; 513 } 514 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id); 515 return 0; 516 } 517 518 519 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv, 520 unsigned char *mac, int *qpn, u64 *reg_id) 521 { 522 struct mlx4_en_dev *mdev = priv->mdev; 523 struct mlx4_dev *dev = mdev->dev; 524 int err; 525 526 switch (dev->caps.steering_mode) { 527 case MLX4_STEERING_MODE_B0: { 528 struct mlx4_qp qp; 529 u8 gid[16] = {0}; 530 531 qp.qpn = *qpn; 532 memcpy(&gid[10], mac, ETH_ALEN); 533 gid[5] = priv->port; 534 535 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH); 536 break; 537 } 538 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 539 struct mlx4_spec_list spec_eth = { {NULL} }; 540 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 541 542 struct mlx4_net_trans_rule rule = { 543 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 544 .exclusive = 0, 545 .allow_loopback = 1, 546 .promisc_mode = MLX4_FS_REGULAR, 547 .priority = MLX4_DOMAIN_NIC, 548 }; 549 550 rule.port = priv->port; 551 rule.qpn = *qpn; 552 INIT_LIST_HEAD(&rule.list); 553 554 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH; 555 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN); 556 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 557 list_add_tail(&spec_eth.list, &rule.list); 558 559 err = mlx4_flow_attach(dev, &rule, reg_id); 560 break; 561 } 562 default: 563 return -EINVAL; 564 } 565 if (err) 566 en_warn(priv, "Failed Attaching Unicast\n"); 567 568 return err; 569 } 570 571 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv, 572 unsigned char *mac, int qpn, u64 reg_id) 573 { 574 struct mlx4_en_dev *mdev = priv->mdev; 575 struct mlx4_dev *dev = mdev->dev; 576 577 switch (dev->caps.steering_mode) { 578 case MLX4_STEERING_MODE_B0: { 579 struct mlx4_qp qp; 580 u8 gid[16] = {0}; 581 582 qp.qpn = qpn; 583 memcpy(&gid[10], mac, ETH_ALEN); 584 gid[5] = priv->port; 585 586 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH); 587 break; 588 } 589 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 590 mlx4_flow_detach(dev, reg_id); 591 break; 592 } 593 default: 594 en_err(priv, "Invalid steering mode.\n"); 595 } 596 } 597 598 static int mlx4_en_get_qp(struct mlx4_en_priv *priv) 599 { 600 struct mlx4_en_dev *mdev = priv->mdev; 601 struct mlx4_dev *dev = mdev->dev; 602 struct mlx4_mac_entry *entry; 603 int index = 0; 604 int err = 0; 605 u64 reg_id; 606 int *qpn = &priv->base_qpn; 607 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 608 609 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n", 610 priv->dev->dev_addr); 611 index = mlx4_register_mac(dev, priv->port, mac); 612 if (index < 0) { 613 err = index; 614 en_err(priv, "Failed adding MAC: %pM\n", 615 priv->dev->dev_addr); 616 return err; 617 } 618 619 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 620 int base_qpn = mlx4_get_base_qpn(dev, priv->port); 621 *qpn = base_qpn + index; 622 return 0; 623 } 624 625 err = mlx4_qp_reserve_range(dev, 1, 1, qpn); 626 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); 627 if (err) { 628 en_err(priv, "Failed to reserve qp for mac registration\n"); 629 goto qp_err; 630 } 631 632 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); 633 if (err) 634 goto steer_err; 635 636 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn, 637 &priv->tunnel_reg_id); 638 if (err) 639 goto tunnel_err; 640 641 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 642 if (!entry) { 643 err = -ENOMEM; 644 goto alloc_err; 645 } 646 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac)); 647 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac)); 648 entry->reg_id = reg_id; 649 650 hlist_add_head_rcu(&entry->hlist, 651 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); 652 653 return 0; 654 655 alloc_err: 656 if (priv->tunnel_reg_id) 657 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 658 tunnel_err: 659 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 660 661 steer_err: 662 mlx4_qp_release_range(dev, *qpn, 1); 663 664 qp_err: 665 mlx4_unregister_mac(dev, priv->port, mac); 666 return err; 667 } 668 669 static void mlx4_en_put_qp(struct mlx4_en_priv *priv) 670 { 671 struct mlx4_en_dev *mdev = priv->mdev; 672 struct mlx4_dev *dev = mdev->dev; 673 int qpn = priv->base_qpn; 674 u64 mac; 675 676 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 677 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 678 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 679 priv->dev->dev_addr); 680 mlx4_unregister_mac(dev, priv->port, mac); 681 } else { 682 struct mlx4_mac_entry *entry; 683 struct hlist_node *tmp; 684 struct hlist_head *bucket; 685 unsigned int i; 686 687 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 688 bucket = &priv->mac_hash[i]; 689 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 690 mac = mlx4_mac_to_u64(entry->mac); 691 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 692 entry->mac); 693 mlx4_en_uc_steer_release(priv, entry->mac, 694 qpn, entry->reg_id); 695 696 mlx4_unregister_mac(dev, priv->port, mac); 697 hlist_del_rcu(&entry->hlist); 698 kfree_rcu(entry, rcu); 699 } 700 } 701 702 if (priv->tunnel_reg_id) { 703 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 704 priv->tunnel_reg_id = 0; 705 } 706 707 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", 708 priv->port, qpn); 709 mlx4_qp_release_range(dev, qpn, 1); 710 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 711 } 712 } 713 714 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, 715 unsigned char *new_mac, unsigned char *prev_mac) 716 { 717 struct mlx4_en_dev *mdev = priv->mdev; 718 struct mlx4_dev *dev = mdev->dev; 719 int err = 0; 720 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac); 721 722 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { 723 struct hlist_head *bucket; 724 unsigned int mac_hash; 725 struct mlx4_mac_entry *entry; 726 struct hlist_node *tmp; 727 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac); 728 729 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; 730 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 731 if (ether_addr_equal_64bits(entry->mac, prev_mac)) { 732 mlx4_en_uc_steer_release(priv, entry->mac, 733 qpn, entry->reg_id); 734 mlx4_unregister_mac(dev, priv->port, 735 prev_mac_u64); 736 hlist_del_rcu(&entry->hlist); 737 synchronize_rcu(); 738 memcpy(entry->mac, new_mac, ETH_ALEN); 739 entry->reg_id = 0; 740 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; 741 hlist_add_head_rcu(&entry->hlist, 742 &priv->mac_hash[mac_hash]); 743 mlx4_register_mac(dev, priv->port, new_mac_u64); 744 err = mlx4_en_uc_steer_add(priv, new_mac, 745 &qpn, 746 &entry->reg_id); 747 if (err) 748 return err; 749 if (priv->tunnel_reg_id) { 750 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 751 priv->tunnel_reg_id = 0; 752 } 753 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn, 754 &priv->tunnel_reg_id); 755 return err; 756 } 757 } 758 return -EINVAL; 759 } 760 761 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); 762 } 763 764 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv, 765 unsigned char new_mac[ETH_ALEN + 2]) 766 { 767 int err = 0; 768 769 if (priv->port_up) { 770 /* Remove old MAC and insert the new one */ 771 err = mlx4_en_replace_mac(priv, priv->base_qpn, 772 new_mac, priv->current_mac); 773 if (err) 774 en_err(priv, "Failed changing HW MAC address\n"); 775 } else 776 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); 777 778 if (!err) 779 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac)); 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 unsigned char new_mac[ETH_ALEN + 2]; 790 int err; 791 792 if (!is_valid_ether_addr(saddr->sa_data)) 793 return -EADDRNOTAVAIL; 794 795 mutex_lock(&mdev->state_lock); 796 memcpy(new_mac, saddr->sa_data, ETH_ALEN); 797 err = mlx4_en_do_set_mac(priv, new_mac); 798 if (!err) 799 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); 800 mutex_unlock(&mdev->state_lock); 801 802 return err; 803 } 804 805 static void mlx4_en_clear_list(struct net_device *dev) 806 { 807 struct mlx4_en_priv *priv = netdev_priv(dev); 808 struct mlx4_en_mc_list *tmp, *mc_to_del; 809 810 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { 811 list_del(&mc_to_del->list); 812 kfree(mc_to_del); 813 } 814 } 815 816 static void mlx4_en_cache_mclist(struct net_device *dev) 817 { 818 struct mlx4_en_priv *priv = netdev_priv(dev); 819 struct netdev_hw_addr *ha; 820 struct mlx4_en_mc_list *tmp; 821 822 mlx4_en_clear_list(dev); 823 netdev_for_each_mc_addr(ha, dev) { 824 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); 825 if (!tmp) { 826 mlx4_en_clear_list(dev); 827 return; 828 } 829 memcpy(tmp->addr, ha->addr, ETH_ALEN); 830 list_add_tail(&tmp->list, &priv->mc_list); 831 } 832 } 833 834 static void update_mclist_flags(struct mlx4_en_priv *priv, 835 struct list_head *dst, 836 struct list_head *src) 837 { 838 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; 839 bool found; 840 841 /* Find all the entries that should be removed from dst, 842 * These are the entries that are not found in src 843 */ 844 list_for_each_entry(dst_tmp, dst, list) { 845 found = false; 846 list_for_each_entry(src_tmp, src, list) { 847 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 848 found = true; 849 break; 850 } 851 } 852 if (!found) 853 dst_tmp->action = MCLIST_REM; 854 } 855 856 /* Add entries that exist in src but not in dst 857 * mark them as need to add 858 */ 859 list_for_each_entry(src_tmp, src, list) { 860 found = false; 861 list_for_each_entry(dst_tmp, dst, list) { 862 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 863 dst_tmp->action = MCLIST_NONE; 864 found = true; 865 break; 866 } 867 } 868 if (!found) { 869 new_mc = kmemdup(src_tmp, 870 sizeof(struct mlx4_en_mc_list), 871 GFP_KERNEL); 872 if (!new_mc) 873 return; 874 875 new_mc->action = MCLIST_ADD; 876 list_add_tail(&new_mc->list, dst); 877 } 878 } 879 } 880 881 static void mlx4_en_set_rx_mode(struct net_device *dev) 882 { 883 struct mlx4_en_priv *priv = netdev_priv(dev); 884 885 if (!priv->port_up) 886 return; 887 888 queue_work(priv->mdev->workqueue, &priv->rx_mode_task); 889 } 890 891 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, 892 struct mlx4_en_dev *mdev) 893 { 894 int err = 0; 895 896 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { 897 if (netif_msg_rx_status(priv)) 898 en_warn(priv, "Entering promiscuous mode\n"); 899 priv->flags |= MLX4_EN_FLAG_PROMISC; 900 901 /* Enable promiscouos mode */ 902 switch (mdev->dev->caps.steering_mode) { 903 case MLX4_STEERING_MODE_DEVICE_MANAGED: 904 err = mlx4_flow_steer_promisc_add(mdev->dev, 905 priv->port, 906 priv->base_qpn, 907 MLX4_FS_ALL_DEFAULT); 908 if (err) 909 en_err(priv, "Failed enabling promiscuous mode\n"); 910 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 911 break; 912 913 case MLX4_STEERING_MODE_B0: 914 err = mlx4_unicast_promisc_add(mdev->dev, 915 priv->base_qpn, 916 priv->port); 917 if (err) 918 en_err(priv, "Failed enabling unicast promiscuous mode\n"); 919 920 /* Add the default qp number as multicast 921 * promisc 922 */ 923 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 924 err = mlx4_multicast_promisc_add(mdev->dev, 925 priv->base_qpn, 926 priv->port); 927 if (err) 928 en_err(priv, "Failed enabling multicast promiscuous mode\n"); 929 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 930 } 931 break; 932 933 case MLX4_STEERING_MODE_A0: 934 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 935 priv->port, 936 priv->base_qpn, 937 1); 938 if (err) 939 en_err(priv, "Failed enabling promiscuous mode\n"); 940 break; 941 } 942 943 /* Disable port multicast filter (unconditionally) */ 944 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 945 0, MLX4_MCAST_DISABLE); 946 if (err) 947 en_err(priv, "Failed disabling multicast filter\n"); 948 } 949 } 950 951 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv, 952 struct mlx4_en_dev *mdev) 953 { 954 int err = 0; 955 956 if (netif_msg_rx_status(priv)) 957 en_warn(priv, "Leaving promiscuous mode\n"); 958 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 959 960 /* Disable promiscouos mode */ 961 switch (mdev->dev->caps.steering_mode) { 962 case MLX4_STEERING_MODE_DEVICE_MANAGED: 963 err = mlx4_flow_steer_promisc_remove(mdev->dev, 964 priv->port, 965 MLX4_FS_ALL_DEFAULT); 966 if (err) 967 en_err(priv, "Failed disabling promiscuous mode\n"); 968 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 969 break; 970 971 case MLX4_STEERING_MODE_B0: 972 err = mlx4_unicast_promisc_remove(mdev->dev, 973 priv->base_qpn, 974 priv->port); 975 if (err) 976 en_err(priv, "Failed disabling unicast promiscuous mode\n"); 977 /* Disable Multicast promisc */ 978 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 979 err = mlx4_multicast_promisc_remove(mdev->dev, 980 priv->base_qpn, 981 priv->port); 982 if (err) 983 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 984 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 985 } 986 break; 987 988 case MLX4_STEERING_MODE_A0: 989 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 990 priv->port, 991 priv->base_qpn, 0); 992 if (err) 993 en_err(priv, "Failed disabling promiscuous mode\n"); 994 break; 995 } 996 } 997 998 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, 999 struct net_device *dev, 1000 struct mlx4_en_dev *mdev) 1001 { 1002 struct mlx4_en_mc_list *mclist, *tmp; 1003 u64 mcast_addr = 0; 1004 u8 mc_list[16] = {0}; 1005 int err = 0; 1006 1007 /* Enable/disable the multicast filter according to IFF_ALLMULTI */ 1008 if (dev->flags & IFF_ALLMULTI) { 1009 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1010 0, MLX4_MCAST_DISABLE); 1011 if (err) 1012 en_err(priv, "Failed disabling multicast filter\n"); 1013 1014 /* Add the default qp number as multicast promisc */ 1015 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 1016 switch (mdev->dev->caps.steering_mode) { 1017 case MLX4_STEERING_MODE_DEVICE_MANAGED: 1018 err = mlx4_flow_steer_promisc_add(mdev->dev, 1019 priv->port, 1020 priv->base_qpn, 1021 MLX4_FS_MC_DEFAULT); 1022 break; 1023 1024 case MLX4_STEERING_MODE_B0: 1025 err = mlx4_multicast_promisc_add(mdev->dev, 1026 priv->base_qpn, 1027 priv->port); 1028 break; 1029 1030 case MLX4_STEERING_MODE_A0: 1031 break; 1032 } 1033 if (err) 1034 en_err(priv, "Failed entering multicast promisc mode\n"); 1035 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 1036 } 1037 } else { 1038 /* Disable Multicast promisc */ 1039 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1040 switch (mdev->dev->caps.steering_mode) { 1041 case MLX4_STEERING_MODE_DEVICE_MANAGED: 1042 err = mlx4_flow_steer_promisc_remove(mdev->dev, 1043 priv->port, 1044 MLX4_FS_MC_DEFAULT); 1045 break; 1046 1047 case MLX4_STEERING_MODE_B0: 1048 err = mlx4_multicast_promisc_remove(mdev->dev, 1049 priv->base_qpn, 1050 priv->port); 1051 break; 1052 1053 case MLX4_STEERING_MODE_A0: 1054 break; 1055 } 1056 if (err) 1057 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 1058 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1059 } 1060 1061 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1062 0, MLX4_MCAST_DISABLE); 1063 if (err) 1064 en_err(priv, "Failed disabling multicast filter\n"); 1065 1066 /* Flush mcast filter and init it with broadcast address */ 1067 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, 1068 1, MLX4_MCAST_CONFIG); 1069 1070 /* Update multicast list - we cache all addresses so they won't 1071 * change while HW is updated holding the command semaphor */ 1072 netif_addr_lock_bh(dev); 1073 mlx4_en_cache_mclist(dev); 1074 netif_addr_unlock_bh(dev); 1075 list_for_each_entry(mclist, &priv->mc_list, list) { 1076 mcast_addr = mlx4_mac_to_u64(mclist->addr); 1077 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 1078 mcast_addr, 0, MLX4_MCAST_CONFIG); 1079 } 1080 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1081 0, MLX4_MCAST_ENABLE); 1082 if (err) 1083 en_err(priv, "Failed enabling multicast filter\n"); 1084 1085 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); 1086 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1087 if (mclist->action == MCLIST_REM) { 1088 /* detach this address and delete from list */ 1089 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1090 mc_list[5] = priv->port; 1091 err = mlx4_multicast_detach(mdev->dev, 1092 &priv->rss_map.indir_qp, 1093 mc_list, 1094 MLX4_PROT_ETH, 1095 mclist->reg_id); 1096 if (err) 1097 en_err(priv, "Fail to detach multicast address\n"); 1098 1099 if (mclist->tunnel_reg_id) { 1100 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id); 1101 if (err) 1102 en_err(priv, "Failed to detach multicast address\n"); 1103 } 1104 1105 /* remove from list */ 1106 list_del(&mclist->list); 1107 kfree(mclist); 1108 } else if (mclist->action == MCLIST_ADD) { 1109 /* attach the address */ 1110 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1111 /* needed for B0 steering support */ 1112 mc_list[5] = priv->port; 1113 err = mlx4_multicast_attach(mdev->dev, 1114 &priv->rss_map.indir_qp, 1115 mc_list, 1116 priv->port, 0, 1117 MLX4_PROT_ETH, 1118 &mclist->reg_id); 1119 if (err) 1120 en_err(priv, "Fail to attach multicast address\n"); 1121 1122 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn, 1123 &mclist->tunnel_reg_id); 1124 if (err) 1125 en_err(priv, "Failed to attach multicast address\n"); 1126 } 1127 } 1128 } 1129 } 1130 1131 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, 1132 struct net_device *dev, 1133 struct mlx4_en_dev *mdev) 1134 { 1135 struct netdev_hw_addr *ha; 1136 struct mlx4_mac_entry *entry; 1137 struct hlist_node *tmp; 1138 bool found; 1139 u64 mac; 1140 int err = 0; 1141 struct hlist_head *bucket; 1142 unsigned int i; 1143 int removed = 0; 1144 u32 prev_flags; 1145 1146 /* Note that we do not need to protect our mac_hash traversal with rcu, 1147 * since all modification code is protected by mdev->state_lock 1148 */ 1149 1150 /* find what to remove */ 1151 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1152 bucket = &priv->mac_hash[i]; 1153 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1154 found = false; 1155 netdev_for_each_uc_addr(ha, dev) { 1156 if (ether_addr_equal_64bits(entry->mac, 1157 ha->addr)) { 1158 found = true; 1159 break; 1160 } 1161 } 1162 1163 /* MAC address of the port is not in uc list */ 1164 if (ether_addr_equal_64bits(entry->mac, 1165 priv->current_mac)) 1166 found = true; 1167 1168 if (!found) { 1169 mac = mlx4_mac_to_u64(entry->mac); 1170 mlx4_en_uc_steer_release(priv, entry->mac, 1171 priv->base_qpn, 1172 entry->reg_id); 1173 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1174 1175 hlist_del_rcu(&entry->hlist); 1176 kfree_rcu(entry, rcu); 1177 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", 1178 entry->mac, priv->port); 1179 ++removed; 1180 } 1181 } 1182 } 1183 1184 /* if we didn't remove anything, there is no use in trying to add 1185 * again once we are in a forced promisc mode state 1186 */ 1187 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) 1188 return; 1189 1190 prev_flags = priv->flags; 1191 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 1192 1193 /* find what to add */ 1194 netdev_for_each_uc_addr(ha, dev) { 1195 found = false; 1196 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; 1197 hlist_for_each_entry(entry, bucket, hlist) { 1198 if (ether_addr_equal_64bits(entry->mac, ha->addr)) { 1199 found = true; 1200 break; 1201 } 1202 } 1203 1204 if (!found) { 1205 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1206 if (!entry) { 1207 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", 1208 ha->addr, priv->port); 1209 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1210 break; 1211 } 1212 mac = mlx4_mac_to_u64(ha->addr); 1213 memcpy(entry->mac, ha->addr, ETH_ALEN); 1214 err = mlx4_register_mac(mdev->dev, priv->port, mac); 1215 if (err < 0) { 1216 en_err(priv, "Failed registering MAC %pM on port %d: %d\n", 1217 ha->addr, priv->port, err); 1218 kfree(entry); 1219 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1220 break; 1221 } 1222 err = mlx4_en_uc_steer_add(priv, ha->addr, 1223 &priv->base_qpn, 1224 &entry->reg_id); 1225 if (err) { 1226 en_err(priv, "Failed adding MAC %pM on port %d: %d\n", 1227 ha->addr, priv->port, err); 1228 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1229 kfree(entry); 1230 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1231 break; 1232 } else { 1233 unsigned int mac_hash; 1234 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", 1235 ha->addr, priv->port); 1236 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; 1237 bucket = &priv->mac_hash[mac_hash]; 1238 hlist_add_head_rcu(&entry->hlist, bucket); 1239 } 1240 } 1241 } 1242 1243 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1244 en_warn(priv, "Forcing promiscuous mode on port:%d\n", 1245 priv->port); 1246 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1247 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", 1248 priv->port); 1249 } 1250 } 1251 1252 static void mlx4_en_do_set_rx_mode(struct work_struct *work) 1253 { 1254 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1255 rx_mode_task); 1256 struct mlx4_en_dev *mdev = priv->mdev; 1257 struct net_device *dev = priv->dev; 1258 1259 mutex_lock(&mdev->state_lock); 1260 if (!mdev->device_up) { 1261 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); 1262 goto out; 1263 } 1264 if (!priv->port_up) { 1265 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); 1266 goto out; 1267 } 1268 1269 if (!netif_carrier_ok(dev)) { 1270 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { 1271 if (priv->port_state.link_state) { 1272 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; 1273 netif_carrier_on(dev); 1274 en_dbg(LINK, priv, "Link Up\n"); 1275 } 1276 } 1277 } 1278 1279 if (dev->priv_flags & IFF_UNICAST_FLT) 1280 mlx4_en_do_uc_filter(priv, dev, mdev); 1281 1282 /* Promsicuous mode: disable all filters */ 1283 if ((dev->flags & IFF_PROMISC) || 1284 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { 1285 mlx4_en_set_promisc_mode(priv, mdev); 1286 goto out; 1287 } 1288 1289 /* Not in promiscuous mode */ 1290 if (priv->flags & MLX4_EN_FLAG_PROMISC) 1291 mlx4_en_clear_promisc_mode(priv, mdev); 1292 1293 mlx4_en_do_multicast(priv, dev, mdev); 1294 out: 1295 mutex_unlock(&mdev->state_lock); 1296 } 1297 1298 #ifdef CONFIG_NET_POLL_CONTROLLER 1299 static void mlx4_en_netpoll(struct net_device *dev) 1300 { 1301 struct mlx4_en_priv *priv = netdev_priv(dev); 1302 struct mlx4_en_cq *cq; 1303 int i; 1304 1305 for (i = 0; i < priv->rx_ring_num; i++) { 1306 cq = priv->rx_cq[i]; 1307 napi_schedule(&cq->napi); 1308 } 1309 } 1310 #endif 1311 1312 static void mlx4_en_tx_timeout(struct net_device *dev) 1313 { 1314 struct mlx4_en_priv *priv = netdev_priv(dev); 1315 struct mlx4_en_dev *mdev = priv->mdev; 1316 int i; 1317 1318 if (netif_msg_timer(priv)) 1319 en_warn(priv, "Tx timeout called on port:%d\n", priv->port); 1320 1321 for (i = 0; i < priv->tx_ring_num; i++) { 1322 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) 1323 continue; 1324 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", 1325 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn, 1326 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod); 1327 } 1328 1329 priv->port_stats.tx_timeout++; 1330 en_dbg(DRV, priv, "Scheduling watchdog\n"); 1331 queue_work(mdev->workqueue, &priv->watchdog_task); 1332 } 1333 1334 1335 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev) 1336 { 1337 struct mlx4_en_priv *priv = netdev_priv(dev); 1338 1339 spin_lock_bh(&priv->stats_lock); 1340 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats)); 1341 spin_unlock_bh(&priv->stats_lock); 1342 1343 return &priv->ret_stats; 1344 } 1345 1346 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1347 { 1348 struct mlx4_en_cq *cq; 1349 int i; 1350 1351 /* If we haven't received a specific coalescing setting 1352 * (module param), we set the moderation parameters as follows: 1353 * - moder_cnt is set to the number of mtu sized packets to 1354 * satisfy our coalescing target. 1355 * - moder_time is set to a fixed value. 1356 */ 1357 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1358 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1359 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1360 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1361 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1362 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1363 1364 /* Setup cq moderation params */ 1365 for (i = 0; i < priv->rx_ring_num; i++) { 1366 cq = priv->rx_cq[i]; 1367 cq->moder_cnt = priv->rx_frames; 1368 cq->moder_time = priv->rx_usecs; 1369 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1370 priv->last_moder_packets[i] = 0; 1371 priv->last_moder_bytes[i] = 0; 1372 } 1373 1374 for (i = 0; i < priv->tx_ring_num; i++) { 1375 cq = priv->tx_cq[i]; 1376 cq->moder_cnt = priv->tx_frames; 1377 cq->moder_time = priv->tx_usecs; 1378 } 1379 1380 /* Reset auto-moderation params */ 1381 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1382 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1383 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1384 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1385 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1386 priv->adaptive_rx_coal = 1; 1387 priv->last_moder_jiffies = 0; 1388 priv->last_moder_tx_packets = 0; 1389 } 1390 1391 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1392 { 1393 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1394 struct mlx4_en_cq *cq; 1395 unsigned long packets; 1396 unsigned long rate; 1397 unsigned long avg_pkt_size; 1398 unsigned long rx_packets; 1399 unsigned long rx_bytes; 1400 unsigned long rx_pkt_diff; 1401 int moder_time; 1402 int ring, err; 1403 1404 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1405 return; 1406 1407 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1408 spin_lock_bh(&priv->stats_lock); 1409 rx_packets = priv->rx_ring[ring]->packets; 1410 rx_bytes = priv->rx_ring[ring]->bytes; 1411 spin_unlock_bh(&priv->stats_lock); 1412 1413 rx_pkt_diff = ((unsigned long) (rx_packets - 1414 priv->last_moder_packets[ring])); 1415 packets = rx_pkt_diff; 1416 rate = packets * HZ / period; 1417 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1418 priv->last_moder_bytes[ring])) / packets : 0; 1419 1420 /* Apply auto-moderation only when packet rate 1421 * exceeds a rate that it matters */ 1422 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1423 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1424 if (rate < priv->pkt_rate_low) 1425 moder_time = priv->rx_usecs_low; 1426 else if (rate > priv->pkt_rate_high) 1427 moder_time = priv->rx_usecs_high; 1428 else 1429 moder_time = (rate - priv->pkt_rate_low) * 1430 (priv->rx_usecs_high - priv->rx_usecs_low) / 1431 (priv->pkt_rate_high - priv->pkt_rate_low) + 1432 priv->rx_usecs_low; 1433 } else { 1434 moder_time = priv->rx_usecs_low; 1435 } 1436 1437 if (moder_time != priv->last_moder_time[ring]) { 1438 priv->last_moder_time[ring] = moder_time; 1439 cq = priv->rx_cq[ring]; 1440 cq->moder_time = moder_time; 1441 cq->moder_cnt = priv->rx_frames; 1442 err = mlx4_en_set_cq_moder(priv, cq); 1443 if (err) 1444 en_err(priv, "Failed modifying moderation for cq:%d\n", 1445 ring); 1446 } 1447 priv->last_moder_packets[ring] = rx_packets; 1448 priv->last_moder_bytes[ring] = rx_bytes; 1449 } 1450 1451 priv->last_moder_jiffies = jiffies; 1452 } 1453 1454 static void mlx4_en_do_get_stats(struct work_struct *work) 1455 { 1456 struct delayed_work *delay = to_delayed_work(work); 1457 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1458 stats_task); 1459 struct mlx4_en_dev *mdev = priv->mdev; 1460 int err; 1461 1462 mutex_lock(&mdev->state_lock); 1463 if (mdev->device_up) { 1464 if (priv->port_up) { 1465 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1466 if (err) 1467 en_dbg(HW, priv, "Could not update stats\n"); 1468 1469 mlx4_en_auto_moderation(priv); 1470 } 1471 1472 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1473 } 1474 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1475 mlx4_en_do_set_mac(priv, priv->current_mac); 1476 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1477 } 1478 mutex_unlock(&mdev->state_lock); 1479 } 1480 1481 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1482 * periodically 1483 */ 1484 static void mlx4_en_service_task(struct work_struct *work) 1485 { 1486 struct delayed_work *delay = to_delayed_work(work); 1487 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1488 service_task); 1489 struct mlx4_en_dev *mdev = priv->mdev; 1490 1491 mutex_lock(&mdev->state_lock); 1492 if (mdev->device_up) { 1493 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1494 mlx4_en_ptp_overflow_check(mdev); 1495 1496 queue_delayed_work(mdev->workqueue, &priv->service_task, 1497 SERVICE_TASK_DELAY); 1498 } 1499 mutex_unlock(&mdev->state_lock); 1500 } 1501 1502 static void mlx4_en_linkstate(struct work_struct *work) 1503 { 1504 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1505 linkstate_task); 1506 struct mlx4_en_dev *mdev = priv->mdev; 1507 int linkstate = priv->link_state; 1508 1509 mutex_lock(&mdev->state_lock); 1510 /* If observable port state changed set carrier state and 1511 * report to system log */ 1512 if (priv->last_link_state != linkstate) { 1513 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1514 en_info(priv, "Link Down\n"); 1515 netif_carrier_off(priv->dev); 1516 } else { 1517 en_info(priv, "Link Up\n"); 1518 netif_carrier_on(priv->dev); 1519 } 1520 } 1521 priv->last_link_state = linkstate; 1522 mutex_unlock(&mdev->state_lock); 1523 } 1524 1525 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1526 { 1527 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx]; 1528 int numa_node = priv->mdev->dev->numa_node; 1529 int ret = 0; 1530 1531 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL)) 1532 return -ENOMEM; 1533 1534 ret = cpumask_set_cpu_local_first(ring_idx, numa_node, 1535 ring->affinity_mask); 1536 if (ret) 1537 free_cpumask_var(ring->affinity_mask); 1538 1539 return ret; 1540 } 1541 1542 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1543 { 1544 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask); 1545 } 1546 1547 int mlx4_en_start_port(struct net_device *dev) 1548 { 1549 struct mlx4_en_priv *priv = netdev_priv(dev); 1550 struct mlx4_en_dev *mdev = priv->mdev; 1551 struct mlx4_en_cq *cq; 1552 struct mlx4_en_tx_ring *tx_ring; 1553 int rx_index = 0; 1554 int tx_index = 0; 1555 int err = 0; 1556 int i; 1557 int j; 1558 u8 mc_list[16] = {0}; 1559 1560 if (priv->port_up) { 1561 en_dbg(DRV, priv, "start port called while port already up\n"); 1562 return 0; 1563 } 1564 1565 INIT_LIST_HEAD(&priv->mc_list); 1566 INIT_LIST_HEAD(&priv->curr_list); 1567 INIT_LIST_HEAD(&priv->ethtool_list); 1568 memset(&priv->ethtool_rules[0], 0, 1569 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1570 1571 /* Calculate Rx buf size */ 1572 dev->mtu = min(dev->mtu, priv->max_mtu); 1573 mlx4_en_calc_rx_buf(dev); 1574 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1575 1576 /* Configure rx cq's and rings */ 1577 err = mlx4_en_activate_rx_rings(priv); 1578 if (err) { 1579 en_err(priv, "Failed to activate RX rings\n"); 1580 return err; 1581 } 1582 for (i = 0; i < priv->rx_ring_num; i++) { 1583 cq = priv->rx_cq[i]; 1584 1585 mlx4_en_cq_init_lock(cq); 1586 1587 err = mlx4_en_init_affinity_hint(priv, i); 1588 if (err) { 1589 en_err(priv, "Failed preparing IRQ affinity hint\n"); 1590 goto cq_err; 1591 } 1592 1593 err = mlx4_en_activate_cq(priv, cq, i); 1594 if (err) { 1595 en_err(priv, "Failed activating Rx CQ\n"); 1596 mlx4_en_free_affinity_hint(priv, i); 1597 goto cq_err; 1598 } 1599 for (j = 0; j < cq->size; j++) 1600 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1601 err = mlx4_en_set_cq_moder(priv, cq); 1602 if (err) { 1603 en_err(priv, "Failed setting cq moderation parameters\n"); 1604 mlx4_en_deactivate_cq(priv, cq); 1605 mlx4_en_free_affinity_hint(priv, i); 1606 goto cq_err; 1607 } 1608 mlx4_en_arm_cq(priv, cq); 1609 priv->rx_ring[i]->cqn = cq->mcq.cqn; 1610 ++rx_index; 1611 } 1612 1613 /* Set qp number */ 1614 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1615 err = mlx4_en_get_qp(priv); 1616 if (err) { 1617 en_err(priv, "Failed getting eth qp\n"); 1618 goto cq_err; 1619 } 1620 mdev->mac_removed[priv->port] = 0; 1621 1622 err = mlx4_en_config_rss_steer(priv); 1623 if (err) { 1624 en_err(priv, "Failed configuring rss steering\n"); 1625 goto mac_err; 1626 } 1627 1628 err = mlx4_en_create_drop_qp(priv); 1629 if (err) 1630 goto rss_err; 1631 1632 /* Configure tx cq's and rings */ 1633 for (i = 0; i < priv->tx_ring_num; i++) { 1634 /* Configure cq */ 1635 cq = priv->tx_cq[i]; 1636 err = mlx4_en_activate_cq(priv, cq, i); 1637 if (err) { 1638 en_err(priv, "Failed allocating Tx CQ\n"); 1639 goto tx_err; 1640 } 1641 err = mlx4_en_set_cq_moder(priv, cq); 1642 if (err) { 1643 en_err(priv, "Failed setting cq moderation parameters\n"); 1644 mlx4_en_deactivate_cq(priv, cq); 1645 goto tx_err; 1646 } 1647 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i); 1648 cq->buf->wqe_index = cpu_to_be16(0xffff); 1649 1650 /* Configure ring */ 1651 tx_ring = priv->tx_ring[i]; 1652 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, 1653 i / priv->num_tx_rings_p_up); 1654 if (err) { 1655 en_err(priv, "Failed allocating Tx ring\n"); 1656 mlx4_en_deactivate_cq(priv, cq); 1657 goto tx_err; 1658 } 1659 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1660 1661 /* Arm CQ for TX completions */ 1662 mlx4_en_arm_cq(priv, cq); 1663 1664 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1665 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1666 *((u32 *) (tx_ring->buf + j)) = 0xffffffff; 1667 ++tx_index; 1668 } 1669 1670 /* Configure port */ 1671 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1672 priv->rx_skb_size + ETH_FCS_LEN, 1673 priv->prof->tx_pause, 1674 priv->prof->tx_ppp, 1675 priv->prof->rx_pause, 1676 priv->prof->rx_ppp); 1677 if (err) { 1678 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1679 priv->port, err); 1680 goto tx_err; 1681 } 1682 /* Set default qp number */ 1683 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1684 if (err) { 1685 en_err(priv, "Failed setting default qp numbers\n"); 1686 goto tx_err; 1687 } 1688 1689 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 1690 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 1691 if (err) { 1692 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 1693 err); 1694 goto tx_err; 1695 } 1696 } 1697 1698 /* Init port */ 1699 en_dbg(HW, priv, "Initializing port\n"); 1700 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1701 if (err) { 1702 en_err(priv, "Failed Initializing port\n"); 1703 goto tx_err; 1704 } 1705 1706 /* Attach rx QP to bradcast address */ 1707 memset(&mc_list[10], 0xff, ETH_ALEN); 1708 mc_list[5] = priv->port; /* needed for B0 steering support */ 1709 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1710 priv->port, 0, MLX4_PROT_ETH, 1711 &priv->broadcast_id)) 1712 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1713 1714 /* Must redo promiscuous mode setup. */ 1715 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1716 1717 /* Schedule multicast task to populate multicast list */ 1718 queue_work(mdev->workqueue, &priv->rx_mode_task); 1719 1720 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap); 1721 1722 #ifdef CONFIG_MLX4_EN_VXLAN 1723 if (priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS) 1724 vxlan_get_rx_port(dev); 1725 #endif 1726 priv->port_up = true; 1727 netif_tx_start_all_queues(dev); 1728 netif_device_attach(dev); 1729 1730 return 0; 1731 1732 tx_err: 1733 while (tx_index--) { 1734 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]); 1735 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]); 1736 } 1737 mlx4_en_destroy_drop_qp(priv); 1738 rss_err: 1739 mlx4_en_release_rss_steer(priv); 1740 mac_err: 1741 mlx4_en_put_qp(priv); 1742 cq_err: 1743 while (rx_index--) { 1744 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); 1745 mlx4_en_free_affinity_hint(priv, i); 1746 } 1747 for (i = 0; i < priv->rx_ring_num; i++) 1748 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1749 1750 return err; /* need to close devices */ 1751 } 1752 1753 1754 void mlx4_en_stop_port(struct net_device *dev, int detach) 1755 { 1756 struct mlx4_en_priv *priv = netdev_priv(dev); 1757 struct mlx4_en_dev *mdev = priv->mdev; 1758 struct mlx4_en_mc_list *mclist, *tmp; 1759 struct ethtool_flow_id *flow, *tmp_flow; 1760 int i; 1761 u8 mc_list[16] = {0}; 1762 1763 if (!priv->port_up) { 1764 en_dbg(DRV, priv, "stop port called while port already down\n"); 1765 return; 1766 } 1767 1768 /* close port*/ 1769 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1770 1771 /* Synchronize with tx routine */ 1772 netif_tx_lock_bh(dev); 1773 if (detach) 1774 netif_device_detach(dev); 1775 netif_tx_stop_all_queues(dev); 1776 netif_tx_unlock_bh(dev); 1777 1778 netif_tx_disable(dev); 1779 1780 /* Set port as not active */ 1781 priv->port_up = false; 1782 1783 /* Promsicuous mode */ 1784 if (mdev->dev->caps.steering_mode == 1785 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1786 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | 1787 MLX4_EN_FLAG_MC_PROMISC); 1788 mlx4_flow_steer_promisc_remove(mdev->dev, 1789 priv->port, 1790 MLX4_FS_ALL_DEFAULT); 1791 mlx4_flow_steer_promisc_remove(mdev->dev, 1792 priv->port, 1793 MLX4_FS_MC_DEFAULT); 1794 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { 1795 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 1796 1797 /* Disable promiscouos mode */ 1798 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, 1799 priv->port); 1800 1801 /* Disable Multicast promisc */ 1802 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1803 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, 1804 priv->port); 1805 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1806 } 1807 } 1808 1809 /* Detach All multicasts */ 1810 memset(&mc_list[10], 0xff, ETH_ALEN); 1811 mc_list[5] = priv->port; /* needed for B0 steering support */ 1812 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1813 MLX4_PROT_ETH, priv->broadcast_id); 1814 list_for_each_entry(mclist, &priv->curr_list, list) { 1815 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1816 mc_list[5] = priv->port; 1817 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, 1818 mc_list, MLX4_PROT_ETH, mclist->reg_id); 1819 if (mclist->tunnel_reg_id) 1820 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id); 1821 } 1822 mlx4_en_clear_list(dev); 1823 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1824 list_del(&mclist->list); 1825 kfree(mclist); 1826 } 1827 1828 /* Flush multicast filter */ 1829 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); 1830 1831 /* Remove flow steering rules for the port*/ 1832 if (mdev->dev->caps.steering_mode == 1833 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1834 ASSERT_RTNL(); 1835 list_for_each_entry_safe(flow, tmp_flow, 1836 &priv->ethtool_list, list) { 1837 mlx4_flow_detach(mdev->dev, flow->id); 1838 list_del(&flow->list); 1839 } 1840 } 1841 1842 mlx4_en_destroy_drop_qp(priv); 1843 1844 /* Free TX Rings */ 1845 for (i = 0; i < priv->tx_ring_num; i++) { 1846 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]); 1847 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]); 1848 } 1849 msleep(10); 1850 1851 for (i = 0; i < priv->tx_ring_num; i++) 1852 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]); 1853 1854 /* Free RSS qps */ 1855 mlx4_en_release_rss_steer(priv); 1856 1857 /* Unregister Mac address for the port */ 1858 mlx4_en_put_qp(priv); 1859 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN)) 1860 mdev->mac_removed[priv->port] = 1; 1861 1862 /* Free RX Rings */ 1863 for (i = 0; i < priv->rx_ring_num; i++) { 1864 struct mlx4_en_cq *cq = priv->rx_cq[i]; 1865 1866 local_bh_disable(); 1867 while (!mlx4_en_cq_lock_napi(cq)) { 1868 pr_info("CQ %d locked\n", i); 1869 mdelay(1); 1870 } 1871 local_bh_enable(); 1872 1873 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state)) 1874 msleep(1); 1875 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1876 mlx4_en_deactivate_cq(priv, cq); 1877 1878 mlx4_en_free_affinity_hint(priv, i); 1879 } 1880 } 1881 1882 static void mlx4_en_restart(struct work_struct *work) 1883 { 1884 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1885 watchdog_task); 1886 struct mlx4_en_dev *mdev = priv->mdev; 1887 struct net_device *dev = priv->dev; 1888 1889 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1890 1891 mutex_lock(&mdev->state_lock); 1892 if (priv->port_up) { 1893 mlx4_en_stop_port(dev, 1); 1894 if (mlx4_en_start_port(dev)) 1895 en_err(priv, "Failed restarting port %d\n", priv->port); 1896 } 1897 mutex_unlock(&mdev->state_lock); 1898 } 1899 1900 static void mlx4_en_clear_stats(struct net_device *dev) 1901 { 1902 struct mlx4_en_priv *priv = netdev_priv(dev); 1903 struct mlx4_en_dev *mdev = priv->mdev; 1904 int i; 1905 1906 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1907 en_dbg(HW, priv, "Failed dumping statistics\n"); 1908 1909 memset(&priv->stats, 0, sizeof(priv->stats)); 1910 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1911 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1912 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1913 1914 for (i = 0; i < priv->tx_ring_num; i++) { 1915 priv->tx_ring[i]->bytes = 0; 1916 priv->tx_ring[i]->packets = 0; 1917 priv->tx_ring[i]->tx_csum = 0; 1918 } 1919 for (i = 0; i < priv->rx_ring_num; i++) { 1920 priv->rx_ring[i]->bytes = 0; 1921 priv->rx_ring[i]->packets = 0; 1922 priv->rx_ring[i]->csum_ok = 0; 1923 priv->rx_ring[i]->csum_none = 0; 1924 } 1925 } 1926 1927 static int mlx4_en_open(struct net_device *dev) 1928 { 1929 struct mlx4_en_priv *priv = netdev_priv(dev); 1930 struct mlx4_en_dev *mdev = priv->mdev; 1931 int err = 0; 1932 1933 mutex_lock(&mdev->state_lock); 1934 1935 if (!mdev->device_up) { 1936 en_err(priv, "Cannot open - device down/disabled\n"); 1937 err = -EBUSY; 1938 goto out; 1939 } 1940 1941 /* Reset HW statistics and SW counters */ 1942 mlx4_en_clear_stats(dev); 1943 1944 err = mlx4_en_start_port(dev); 1945 if (err) 1946 en_err(priv, "Failed starting port:%d\n", priv->port); 1947 1948 out: 1949 mutex_unlock(&mdev->state_lock); 1950 return err; 1951 } 1952 1953 1954 static int mlx4_en_close(struct net_device *dev) 1955 { 1956 struct mlx4_en_priv *priv = netdev_priv(dev); 1957 struct mlx4_en_dev *mdev = priv->mdev; 1958 1959 en_dbg(IFDOWN, priv, "Close port called\n"); 1960 1961 mutex_lock(&mdev->state_lock); 1962 1963 mlx4_en_stop_port(dev, 0); 1964 netif_carrier_off(dev); 1965 1966 mutex_unlock(&mdev->state_lock); 1967 return 0; 1968 } 1969 1970 void mlx4_en_free_resources(struct mlx4_en_priv *priv) 1971 { 1972 int i; 1973 1974 #ifdef CONFIG_RFS_ACCEL 1975 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap); 1976 priv->dev->rx_cpu_rmap = NULL; 1977 #endif 1978 1979 for (i = 0; i < priv->tx_ring_num; i++) { 1980 if (priv->tx_ring && priv->tx_ring[i]) 1981 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 1982 if (priv->tx_cq && priv->tx_cq[i]) 1983 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 1984 } 1985 1986 for (i = 0; i < priv->rx_ring_num; i++) { 1987 if (priv->rx_ring[i]) 1988 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 1989 priv->prof->rx_ring_size, priv->stride); 1990 if (priv->rx_cq[i]) 1991 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 1992 } 1993 1994 if (priv->base_tx_qpn) { 1995 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num); 1996 priv->base_tx_qpn = 0; 1997 } 1998 } 1999 2000 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 2001 { 2002 struct mlx4_en_port_profile *prof = priv->prof; 2003 int i; 2004 int err; 2005 int node; 2006 2007 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn); 2008 if (err) { 2009 en_err(priv, "failed reserving range for TX rings\n"); 2010 return err; 2011 } 2012 2013 /* Create tx Rings */ 2014 for (i = 0; i < priv->tx_ring_num; i++) { 2015 node = cpu_to_node(i % num_online_cpus()); 2016 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 2017 prof->tx_ring_size, i, TX, node)) 2018 goto err; 2019 2020 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], 2021 priv->base_tx_qpn + i, 2022 prof->tx_ring_size, TXBB_SIZE, 2023 node, i)) 2024 goto err; 2025 } 2026 2027 /* Create rx Rings */ 2028 for (i = 0; i < priv->rx_ring_num; i++) { 2029 node = cpu_to_node(i % num_online_cpus()); 2030 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 2031 prof->rx_ring_size, i, RX, node)) 2032 goto err; 2033 2034 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 2035 prof->rx_ring_size, priv->stride, 2036 node)) 2037 goto err; 2038 } 2039 2040 #ifdef CONFIG_RFS_ACCEL 2041 if (priv->mdev->dev->caps.comp_pool) { 2042 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool); 2043 if (!priv->dev->rx_cpu_rmap) 2044 goto err; 2045 } 2046 #endif 2047 2048 return 0; 2049 2050 err: 2051 en_err(priv, "Failed to allocate NIC resources\n"); 2052 for (i = 0; i < priv->rx_ring_num; i++) { 2053 if (priv->rx_ring[i]) 2054 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2055 prof->rx_ring_size, 2056 priv->stride); 2057 if (priv->rx_cq[i]) 2058 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2059 } 2060 for (i = 0; i < priv->tx_ring_num; i++) { 2061 if (priv->tx_ring[i]) 2062 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2063 if (priv->tx_cq[i]) 2064 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2065 } 2066 return -ENOMEM; 2067 } 2068 2069 2070 void mlx4_en_destroy_netdev(struct net_device *dev) 2071 { 2072 struct mlx4_en_priv *priv = netdev_priv(dev); 2073 struct mlx4_en_dev *mdev = priv->mdev; 2074 2075 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2076 2077 /* Unregister device - this will close the port if it was up */ 2078 if (priv->registered) 2079 unregister_netdev(dev); 2080 2081 if (priv->allocated) 2082 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2083 2084 cancel_delayed_work(&priv->stats_task); 2085 cancel_delayed_work(&priv->service_task); 2086 /* flush any pending task for this netdev */ 2087 flush_workqueue(mdev->workqueue); 2088 2089 /* Detach the netdev so tasks would not attempt to access it */ 2090 mutex_lock(&mdev->state_lock); 2091 mdev->pndev[priv->port] = NULL; 2092 mutex_unlock(&mdev->state_lock); 2093 2094 mlx4_en_free_resources(priv); 2095 2096 kfree(priv->tx_ring); 2097 kfree(priv->tx_cq); 2098 2099 free_netdev(dev); 2100 } 2101 2102 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2103 { 2104 struct mlx4_en_priv *priv = netdev_priv(dev); 2105 struct mlx4_en_dev *mdev = priv->mdev; 2106 int err = 0; 2107 2108 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2109 dev->mtu, new_mtu); 2110 2111 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 2112 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 2113 return -EPERM; 2114 } 2115 dev->mtu = new_mtu; 2116 2117 if (netif_running(dev)) { 2118 mutex_lock(&mdev->state_lock); 2119 if (!mdev->device_up) { 2120 /* NIC is probably restarting - let watchdog task reset 2121 * the port */ 2122 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2123 } else { 2124 mlx4_en_stop_port(dev, 1); 2125 err = mlx4_en_start_port(dev); 2126 if (err) { 2127 en_err(priv, "Failed restarting port:%d\n", 2128 priv->port); 2129 queue_work(mdev->workqueue, &priv->watchdog_task); 2130 } 2131 } 2132 mutex_unlock(&mdev->state_lock); 2133 } 2134 return 0; 2135 } 2136 2137 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2138 { 2139 struct mlx4_en_priv *priv = netdev_priv(dev); 2140 struct mlx4_en_dev *mdev = priv->mdev; 2141 struct hwtstamp_config config; 2142 2143 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2144 return -EFAULT; 2145 2146 /* reserved for future extensions */ 2147 if (config.flags) 2148 return -EINVAL; 2149 2150 /* device doesn't support time stamping */ 2151 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2152 return -EINVAL; 2153 2154 /* TX HW timestamp */ 2155 switch (config.tx_type) { 2156 case HWTSTAMP_TX_OFF: 2157 case HWTSTAMP_TX_ON: 2158 break; 2159 default: 2160 return -ERANGE; 2161 } 2162 2163 /* RX HW timestamp */ 2164 switch (config.rx_filter) { 2165 case HWTSTAMP_FILTER_NONE: 2166 break; 2167 case HWTSTAMP_FILTER_ALL: 2168 case HWTSTAMP_FILTER_SOME: 2169 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2170 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2171 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2172 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2173 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2174 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2175 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2176 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2177 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2178 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2179 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2180 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2181 config.rx_filter = HWTSTAMP_FILTER_ALL; 2182 break; 2183 default: 2184 return -ERANGE; 2185 } 2186 2187 if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) { 2188 config.tx_type = HWTSTAMP_TX_OFF; 2189 config.rx_filter = HWTSTAMP_FILTER_NONE; 2190 } 2191 2192 return copy_to_user(ifr->ifr_data, &config, 2193 sizeof(config)) ? -EFAULT : 0; 2194 } 2195 2196 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2197 { 2198 struct mlx4_en_priv *priv = netdev_priv(dev); 2199 2200 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2201 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2202 } 2203 2204 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2205 { 2206 switch (cmd) { 2207 case SIOCSHWTSTAMP: 2208 return mlx4_en_hwtstamp_set(dev, ifr); 2209 case SIOCGHWTSTAMP: 2210 return mlx4_en_hwtstamp_get(dev, ifr); 2211 default: 2212 return -EOPNOTSUPP; 2213 } 2214 } 2215 2216 static int mlx4_en_set_features(struct net_device *netdev, 2217 netdev_features_t features) 2218 { 2219 struct mlx4_en_priv *priv = netdev_priv(netdev); 2220 2221 if (features & NETIF_F_LOOPBACK) 2222 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK); 2223 else 2224 priv->ctrl_flags &= 2225 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK); 2226 2227 mlx4_en_update_loopback_state(netdev, features); 2228 2229 return 0; 2230 2231 } 2232 2233 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2234 { 2235 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2236 struct mlx4_en_dev *mdev = en_priv->mdev; 2237 u64 mac_u64 = mlx4_mac_to_u64(mac); 2238 2239 if (!is_valid_ether_addr(mac)) 2240 return -EINVAL; 2241 2242 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2243 } 2244 2245 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) 2246 { 2247 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2248 struct mlx4_en_dev *mdev = en_priv->mdev; 2249 2250 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos); 2251 } 2252 2253 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2254 { 2255 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2256 struct mlx4_en_dev *mdev = en_priv->mdev; 2257 2258 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2259 } 2260 2261 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2262 { 2263 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2264 struct mlx4_en_dev *mdev = en_priv->mdev; 2265 2266 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2267 } 2268 2269 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2270 { 2271 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2272 struct mlx4_en_dev *mdev = en_priv->mdev; 2273 2274 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2275 } 2276 2277 #define PORT_ID_BYTE_LEN 8 2278 static int mlx4_en_get_phys_port_id(struct net_device *dev, 2279 struct netdev_phys_port_id *ppid) 2280 { 2281 struct mlx4_en_priv *priv = netdev_priv(dev); 2282 struct mlx4_dev *mdev = priv->mdev->dev; 2283 int i; 2284 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2285 2286 if (!phys_port_id) 2287 return -EOPNOTSUPP; 2288 2289 ppid->id_len = sizeof(phys_port_id); 2290 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2291 ppid->id[i] = phys_port_id & 0xff; 2292 phys_port_id >>= 8; 2293 } 2294 return 0; 2295 } 2296 2297 #ifdef CONFIG_MLX4_EN_VXLAN 2298 static void mlx4_en_add_vxlan_offloads(struct work_struct *work) 2299 { 2300 int ret; 2301 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2302 vxlan_add_task); 2303 2304 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port); 2305 if (ret) 2306 goto out; 2307 2308 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2309 VXLAN_STEER_BY_OUTER_MAC, 1); 2310 out: 2311 if (ret) 2312 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2313 } 2314 2315 static void mlx4_en_del_vxlan_offloads(struct work_struct *work) 2316 { 2317 int ret; 2318 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2319 vxlan_del_task); 2320 2321 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2322 VXLAN_STEER_BY_OUTER_MAC, 0); 2323 if (ret) 2324 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2325 2326 priv->vxlan_port = 0; 2327 } 2328 2329 static void mlx4_en_add_vxlan_port(struct net_device *dev, 2330 sa_family_t sa_family, __be16 port) 2331 { 2332 struct mlx4_en_priv *priv = netdev_priv(dev); 2333 __be16 current_port; 2334 2335 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2336 return; 2337 2338 if (sa_family == AF_INET6) 2339 return; 2340 2341 current_port = priv->vxlan_port; 2342 if (current_port && current_port != port) { 2343 en_warn(priv, "vxlan port %d configured, can't add port %d\n", 2344 ntohs(current_port), ntohs(port)); 2345 return; 2346 } 2347 2348 priv->vxlan_port = port; 2349 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task); 2350 } 2351 2352 static void mlx4_en_del_vxlan_port(struct net_device *dev, 2353 sa_family_t sa_family, __be16 port) 2354 { 2355 struct mlx4_en_priv *priv = netdev_priv(dev); 2356 __be16 current_port; 2357 2358 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2359 return; 2360 2361 if (sa_family == AF_INET6) 2362 return; 2363 2364 current_port = priv->vxlan_port; 2365 if (current_port != port) { 2366 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port)); 2367 return; 2368 } 2369 2370 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task); 2371 } 2372 #endif 2373 2374 static const struct net_device_ops mlx4_netdev_ops = { 2375 .ndo_open = mlx4_en_open, 2376 .ndo_stop = mlx4_en_close, 2377 .ndo_start_xmit = mlx4_en_xmit, 2378 .ndo_select_queue = mlx4_en_select_queue, 2379 .ndo_get_stats = mlx4_en_get_stats, 2380 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2381 .ndo_set_mac_address = mlx4_en_set_mac, 2382 .ndo_validate_addr = eth_validate_addr, 2383 .ndo_change_mtu = mlx4_en_change_mtu, 2384 .ndo_do_ioctl = mlx4_en_ioctl, 2385 .ndo_tx_timeout = mlx4_en_tx_timeout, 2386 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2387 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2388 #ifdef CONFIG_NET_POLL_CONTROLLER 2389 .ndo_poll_controller = mlx4_en_netpoll, 2390 #endif 2391 .ndo_set_features = mlx4_en_set_features, 2392 .ndo_setup_tc = mlx4_en_setup_tc, 2393 #ifdef CONFIG_RFS_ACCEL 2394 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2395 #endif 2396 #ifdef CONFIG_NET_RX_BUSY_POLL 2397 .ndo_busy_poll = mlx4_en_low_latency_recv, 2398 #endif 2399 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2400 #ifdef CONFIG_MLX4_EN_VXLAN 2401 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2402 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2403 #endif 2404 }; 2405 2406 static const struct net_device_ops mlx4_netdev_ops_master = { 2407 .ndo_open = mlx4_en_open, 2408 .ndo_stop = mlx4_en_close, 2409 .ndo_start_xmit = mlx4_en_xmit, 2410 .ndo_select_queue = mlx4_en_select_queue, 2411 .ndo_get_stats = mlx4_en_get_stats, 2412 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2413 .ndo_set_mac_address = mlx4_en_set_mac, 2414 .ndo_validate_addr = eth_validate_addr, 2415 .ndo_change_mtu = mlx4_en_change_mtu, 2416 .ndo_tx_timeout = mlx4_en_tx_timeout, 2417 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2418 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2419 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2420 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2421 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2422 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2423 .ndo_get_vf_config = mlx4_en_get_vf_config, 2424 #ifdef CONFIG_NET_POLL_CONTROLLER 2425 .ndo_poll_controller = mlx4_en_netpoll, 2426 #endif 2427 .ndo_set_features = mlx4_en_set_features, 2428 .ndo_setup_tc = mlx4_en_setup_tc, 2429 #ifdef CONFIG_RFS_ACCEL 2430 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2431 #endif 2432 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2433 }; 2434 2435 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 2436 struct mlx4_en_port_profile *prof) 2437 { 2438 struct net_device *dev; 2439 struct mlx4_en_priv *priv; 2440 int i; 2441 int err; 2442 u64 mac_u64; 2443 2444 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 2445 MAX_TX_RINGS, MAX_RX_RINGS); 2446 if (dev == NULL) 2447 return -ENOMEM; 2448 2449 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 2450 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 2451 2452 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev); 2453 dev->dev_port = port - 1; 2454 2455 /* 2456 * Initialize driver private data 2457 */ 2458 2459 priv = netdev_priv(dev); 2460 memset(priv, 0, sizeof(struct mlx4_en_priv)); 2461 priv->dev = dev; 2462 priv->mdev = mdev; 2463 priv->ddev = &mdev->pdev->dev; 2464 priv->prof = prof; 2465 priv->port = port; 2466 priv->port_up = false; 2467 priv->flags = prof->flags; 2468 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME; 2469 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 2470 MLX4_WQE_CTRL_SOLICITED); 2471 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 2472 priv->tx_ring_num = prof->tx_ring_num; 2473 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK; 2474 2475 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 2476 GFP_KERNEL); 2477 if (!priv->tx_ring) { 2478 err = -ENOMEM; 2479 goto out; 2480 } 2481 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 2482 GFP_KERNEL); 2483 if (!priv->tx_cq) { 2484 err = -ENOMEM; 2485 goto out; 2486 } 2487 priv->rx_ring_num = prof->rx_ring_num; 2488 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 2489 priv->mac_index = -1; 2490 priv->msg_enable = MLX4_EN_MSG_LEVEL; 2491 spin_lock_init(&priv->stats_lock); 2492 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 2493 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 2494 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 2495 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 2496 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 2497 #ifdef CONFIG_MLX4_EN_VXLAN 2498 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads); 2499 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads); 2500 #endif 2501 #ifdef CONFIG_MLX4_EN_DCB 2502 if (!mlx4_is_slave(priv->mdev->dev)) { 2503 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) { 2504 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 2505 } else { 2506 en_info(priv, "enabling only PFC DCB ops\n"); 2507 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 2508 } 2509 } 2510 #endif 2511 2512 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 2513 INIT_HLIST_HEAD(&priv->mac_hash[i]); 2514 2515 /* Query for default mac and max mtu */ 2516 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 2517 2518 /* Set default MAC */ 2519 dev->addr_len = ETH_ALEN; 2520 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 2521 if (!is_valid_ether_addr(dev->dev_addr)) { 2522 if (mlx4_is_slave(priv->mdev->dev)) { 2523 eth_hw_addr_random(dev); 2524 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 2525 mac_u64 = mlx4_mac_to_u64(dev->dev_addr); 2526 mdev->dev->caps.def_mac[priv->port] = mac_u64; 2527 } else { 2528 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 2529 priv->port, dev->dev_addr); 2530 err = -EINVAL; 2531 goto out; 2532 } 2533 } 2534 2535 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac)); 2536 2537 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2538 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2539 err = mlx4_en_alloc_resources(priv); 2540 if (err) 2541 goto out; 2542 2543 #ifdef CONFIG_RFS_ACCEL 2544 INIT_LIST_HEAD(&priv->filters); 2545 spin_lock_init(&priv->filters_lock); 2546 #endif 2547 2548 /* Initialize time stamping config */ 2549 priv->hwtstamp_config.flags = 0; 2550 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 2551 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 2552 2553 /* Allocate page for receive rings */ 2554 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 2555 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE); 2556 if (err) { 2557 en_err(priv, "Failed to allocate page for rx qps\n"); 2558 goto out; 2559 } 2560 priv->allocated = 1; 2561 2562 /* 2563 * Initialize netdev entry points 2564 */ 2565 if (mlx4_is_master(priv->mdev->dev)) 2566 dev->netdev_ops = &mlx4_netdev_ops_master; 2567 else 2568 dev->netdev_ops = &mlx4_netdev_ops; 2569 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 2570 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 2571 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 2572 2573 dev->ethtool_ops = &mlx4_en_ethtool_ops; 2574 2575 /* 2576 * Set driver features 2577 */ 2578 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2579 if (mdev->LSO_support) 2580 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2581 2582 dev->vlan_features = dev->hw_features; 2583 2584 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 2585 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 2586 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 2587 NETIF_F_HW_VLAN_CTAG_FILTER; 2588 dev->hw_features |= NETIF_F_LOOPBACK; 2589 2590 if (mdev->dev->caps.steering_mode == 2591 MLX4_STEERING_MODE_DEVICE_MANAGED) 2592 dev->hw_features |= NETIF_F_NTUPLE; 2593 2594 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 2595 dev->priv_flags |= IFF_UNICAST_FLT; 2596 2597 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 2598 dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2599 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL; 2600 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; 2601 dev->features |= NETIF_F_GSO_UDP_TUNNEL; 2602 } 2603 2604 mdev->pndev[port] = dev; 2605 2606 netif_carrier_off(dev); 2607 mlx4_en_set_default_moderation(priv); 2608 2609 err = register_netdev(dev); 2610 if (err) { 2611 en_err(priv, "Netdev registration failed for port %d\n", port); 2612 goto out; 2613 } 2614 priv->registered = 1; 2615 2616 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 2617 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 2618 2619 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 2620 2621 /* Configure port */ 2622 mlx4_en_calc_rx_buf(dev); 2623 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 2624 priv->rx_skb_size + ETH_FCS_LEN, 2625 prof->tx_pause, prof->tx_ppp, 2626 prof->rx_pause, prof->rx_ppp); 2627 if (err) { 2628 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 2629 priv->port, err); 2630 goto out; 2631 } 2632 2633 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 2634 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 2635 if (err) { 2636 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 2637 err); 2638 goto out; 2639 } 2640 } 2641 2642 /* Init port */ 2643 en_warn(priv, "Initializing port\n"); 2644 err = mlx4_INIT_PORT(mdev->dev, priv->port); 2645 if (err) { 2646 en_err(priv, "Failed Initializing port\n"); 2647 goto out; 2648 } 2649 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 2650 2651 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2652 queue_delayed_work(mdev->workqueue, &priv->service_task, 2653 SERVICE_TASK_DELAY); 2654 2655 return 0; 2656 2657 out: 2658 mlx4_en_destroy_netdev(dev); 2659 return err; 2660 } 2661 2662