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 -EPROTONOSUPPORT; 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 < 0) { 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 entry->reg_id = reg_id; 648 649 hlist_add_head_rcu(&entry->hlist, 650 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); 651 652 return 0; 653 654 alloc_err: 655 if (priv->tunnel_reg_id) 656 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 657 tunnel_err: 658 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 659 660 steer_err: 661 mlx4_qp_release_range(dev, *qpn, 1); 662 663 qp_err: 664 mlx4_unregister_mac(dev, priv->port, mac); 665 return err; 666 } 667 668 static void mlx4_en_put_qp(struct mlx4_en_priv *priv) 669 { 670 struct mlx4_en_dev *mdev = priv->mdev; 671 struct mlx4_dev *dev = mdev->dev; 672 int qpn = priv->base_qpn; 673 u64 mac; 674 675 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 676 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 677 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 678 priv->dev->dev_addr); 679 mlx4_unregister_mac(dev, priv->port, mac); 680 } else { 681 struct mlx4_mac_entry *entry; 682 struct hlist_node *tmp; 683 struct hlist_head *bucket; 684 unsigned int i; 685 686 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 687 bucket = &priv->mac_hash[i]; 688 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 689 mac = mlx4_mac_to_u64(entry->mac); 690 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 691 entry->mac); 692 mlx4_en_uc_steer_release(priv, entry->mac, 693 qpn, entry->reg_id); 694 695 mlx4_unregister_mac(dev, priv->port, mac); 696 hlist_del_rcu(&entry->hlist); 697 kfree_rcu(entry, rcu); 698 } 699 } 700 701 if (priv->tunnel_reg_id) { 702 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 703 priv->tunnel_reg_id = 0; 704 } 705 706 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", 707 priv->port, qpn); 708 mlx4_qp_release_range(dev, qpn, 1); 709 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 710 } 711 } 712 713 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, 714 unsigned char *new_mac, unsigned char *prev_mac) 715 { 716 struct mlx4_en_dev *mdev = priv->mdev; 717 struct mlx4_dev *dev = mdev->dev; 718 int err = 0; 719 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac); 720 721 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { 722 struct hlist_head *bucket; 723 unsigned int mac_hash; 724 struct mlx4_mac_entry *entry; 725 struct hlist_node *tmp; 726 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac); 727 728 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; 729 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 730 if (ether_addr_equal_64bits(entry->mac, prev_mac)) { 731 mlx4_en_uc_steer_release(priv, entry->mac, 732 qpn, entry->reg_id); 733 mlx4_unregister_mac(dev, priv->port, 734 prev_mac_u64); 735 hlist_del_rcu(&entry->hlist); 736 synchronize_rcu(); 737 memcpy(entry->mac, new_mac, ETH_ALEN); 738 entry->reg_id = 0; 739 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; 740 hlist_add_head_rcu(&entry->hlist, 741 &priv->mac_hash[mac_hash]); 742 mlx4_register_mac(dev, priv->port, new_mac_u64); 743 err = mlx4_en_uc_steer_add(priv, new_mac, 744 &qpn, 745 &entry->reg_id); 746 if (err) 747 return err; 748 if (priv->tunnel_reg_id) { 749 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 750 priv->tunnel_reg_id = 0; 751 } 752 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn, 753 &priv->tunnel_reg_id); 754 return err; 755 } 756 } 757 return -EINVAL; 758 } 759 760 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); 761 } 762 763 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv) 764 { 765 int err = 0; 766 767 if (priv->port_up) { 768 /* Remove old MAC and insert the new one */ 769 err = mlx4_en_replace_mac(priv, priv->base_qpn, 770 priv->dev->dev_addr, priv->prev_mac); 771 if (err) 772 en_err(priv, "Failed changing HW MAC address\n"); 773 memcpy(priv->prev_mac, priv->dev->dev_addr, 774 sizeof(priv->prev_mac)); 775 } else 776 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); 777 778 return err; 779 } 780 781 static int mlx4_en_set_mac(struct net_device *dev, void *addr) 782 { 783 struct mlx4_en_priv *priv = netdev_priv(dev); 784 struct mlx4_en_dev *mdev = priv->mdev; 785 struct sockaddr *saddr = addr; 786 int err; 787 788 if (!is_valid_ether_addr(saddr->sa_data)) 789 return -EADDRNOTAVAIL; 790 791 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); 792 793 mutex_lock(&mdev->state_lock); 794 err = mlx4_en_do_set_mac(priv); 795 mutex_unlock(&mdev->state_lock); 796 797 return err; 798 } 799 800 static void mlx4_en_clear_list(struct net_device *dev) 801 { 802 struct mlx4_en_priv *priv = netdev_priv(dev); 803 struct mlx4_en_mc_list *tmp, *mc_to_del; 804 805 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { 806 list_del(&mc_to_del->list); 807 kfree(mc_to_del); 808 } 809 } 810 811 static void mlx4_en_cache_mclist(struct net_device *dev) 812 { 813 struct mlx4_en_priv *priv = netdev_priv(dev); 814 struct netdev_hw_addr *ha; 815 struct mlx4_en_mc_list *tmp; 816 817 mlx4_en_clear_list(dev); 818 netdev_for_each_mc_addr(ha, dev) { 819 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); 820 if (!tmp) { 821 mlx4_en_clear_list(dev); 822 return; 823 } 824 memcpy(tmp->addr, ha->addr, ETH_ALEN); 825 list_add_tail(&tmp->list, &priv->mc_list); 826 } 827 } 828 829 static void update_mclist_flags(struct mlx4_en_priv *priv, 830 struct list_head *dst, 831 struct list_head *src) 832 { 833 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; 834 bool found; 835 836 /* Find all the entries that should be removed from dst, 837 * These are the entries that are not found in src 838 */ 839 list_for_each_entry(dst_tmp, dst, list) { 840 found = false; 841 list_for_each_entry(src_tmp, src, list) { 842 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 843 found = true; 844 break; 845 } 846 } 847 if (!found) 848 dst_tmp->action = MCLIST_REM; 849 } 850 851 /* Add entries that exist in src but not in dst 852 * mark them as need to add 853 */ 854 list_for_each_entry(src_tmp, src, list) { 855 found = false; 856 list_for_each_entry(dst_tmp, dst, list) { 857 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 858 dst_tmp->action = MCLIST_NONE; 859 found = true; 860 break; 861 } 862 } 863 if (!found) { 864 new_mc = kmemdup(src_tmp, 865 sizeof(struct mlx4_en_mc_list), 866 GFP_KERNEL); 867 if (!new_mc) 868 return; 869 870 new_mc->action = MCLIST_ADD; 871 list_add_tail(&new_mc->list, dst); 872 } 873 } 874 } 875 876 static void mlx4_en_set_rx_mode(struct net_device *dev) 877 { 878 struct mlx4_en_priv *priv = netdev_priv(dev); 879 880 if (!priv->port_up) 881 return; 882 883 queue_work(priv->mdev->workqueue, &priv->rx_mode_task); 884 } 885 886 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, 887 struct mlx4_en_dev *mdev) 888 { 889 int err = 0; 890 891 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { 892 if (netif_msg_rx_status(priv)) 893 en_warn(priv, "Entering promiscuous mode\n"); 894 priv->flags |= MLX4_EN_FLAG_PROMISC; 895 896 /* Enable promiscouos mode */ 897 switch (mdev->dev->caps.steering_mode) { 898 case MLX4_STEERING_MODE_DEVICE_MANAGED: 899 err = mlx4_flow_steer_promisc_add(mdev->dev, 900 priv->port, 901 priv->base_qpn, 902 MLX4_FS_ALL_DEFAULT); 903 if (err) 904 en_err(priv, "Failed enabling promiscuous mode\n"); 905 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 906 break; 907 908 case MLX4_STEERING_MODE_B0: 909 err = mlx4_unicast_promisc_add(mdev->dev, 910 priv->base_qpn, 911 priv->port); 912 if (err) 913 en_err(priv, "Failed enabling unicast promiscuous mode\n"); 914 915 /* Add the default qp number as multicast 916 * promisc 917 */ 918 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 919 err = mlx4_multicast_promisc_add(mdev->dev, 920 priv->base_qpn, 921 priv->port); 922 if (err) 923 en_err(priv, "Failed enabling multicast promiscuous mode\n"); 924 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 925 } 926 break; 927 928 case MLX4_STEERING_MODE_A0: 929 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 930 priv->port, 931 priv->base_qpn, 932 1); 933 if (err) 934 en_err(priv, "Failed enabling promiscuous mode\n"); 935 break; 936 } 937 938 /* Disable port multicast filter (unconditionally) */ 939 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 940 0, MLX4_MCAST_DISABLE); 941 if (err) 942 en_err(priv, "Failed disabling multicast filter\n"); 943 944 /* Disable port VLAN filter */ 945 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 946 if (err) 947 en_err(priv, "Failed disabling VLAN 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 /* Enable port VLAN filter */ 998 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 999 if (err) 1000 en_err(priv, "Failed enabling VLAN filter\n"); 1001 } 1002 1003 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, 1004 struct net_device *dev, 1005 struct mlx4_en_dev *mdev) 1006 { 1007 struct mlx4_en_mc_list *mclist, *tmp; 1008 u64 mcast_addr = 0; 1009 u8 mc_list[16] = {0}; 1010 int err = 0; 1011 1012 /* Enable/disable the multicast filter according to IFF_ALLMULTI */ 1013 if (dev->flags & IFF_ALLMULTI) { 1014 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1015 0, MLX4_MCAST_DISABLE); 1016 if (err) 1017 en_err(priv, "Failed disabling multicast filter\n"); 1018 1019 /* Add the default qp number as multicast promisc */ 1020 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 1021 switch (mdev->dev->caps.steering_mode) { 1022 case MLX4_STEERING_MODE_DEVICE_MANAGED: 1023 err = mlx4_flow_steer_promisc_add(mdev->dev, 1024 priv->port, 1025 priv->base_qpn, 1026 MLX4_FS_MC_DEFAULT); 1027 break; 1028 1029 case MLX4_STEERING_MODE_B0: 1030 err = mlx4_multicast_promisc_add(mdev->dev, 1031 priv->base_qpn, 1032 priv->port); 1033 break; 1034 1035 case MLX4_STEERING_MODE_A0: 1036 break; 1037 } 1038 if (err) 1039 en_err(priv, "Failed entering multicast promisc mode\n"); 1040 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 1041 } 1042 } else { 1043 /* Disable Multicast promisc */ 1044 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1045 switch (mdev->dev->caps.steering_mode) { 1046 case MLX4_STEERING_MODE_DEVICE_MANAGED: 1047 err = mlx4_flow_steer_promisc_remove(mdev->dev, 1048 priv->port, 1049 MLX4_FS_MC_DEFAULT); 1050 break; 1051 1052 case MLX4_STEERING_MODE_B0: 1053 err = mlx4_multicast_promisc_remove(mdev->dev, 1054 priv->base_qpn, 1055 priv->port); 1056 break; 1057 1058 case MLX4_STEERING_MODE_A0: 1059 break; 1060 } 1061 if (err) 1062 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 1063 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1064 } 1065 1066 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1067 0, MLX4_MCAST_DISABLE); 1068 if (err) 1069 en_err(priv, "Failed disabling multicast filter\n"); 1070 1071 /* Flush mcast filter and init it with broadcast address */ 1072 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, 1073 1, MLX4_MCAST_CONFIG); 1074 1075 /* Update multicast list - we cache all addresses so they won't 1076 * change while HW is updated holding the command semaphor */ 1077 netif_addr_lock_bh(dev); 1078 mlx4_en_cache_mclist(dev); 1079 netif_addr_unlock_bh(dev); 1080 list_for_each_entry(mclist, &priv->mc_list, list) { 1081 mcast_addr = mlx4_mac_to_u64(mclist->addr); 1082 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 1083 mcast_addr, 0, MLX4_MCAST_CONFIG); 1084 } 1085 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1086 0, MLX4_MCAST_ENABLE); 1087 if (err) 1088 en_err(priv, "Failed enabling multicast filter\n"); 1089 1090 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); 1091 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1092 if (mclist->action == MCLIST_REM) { 1093 /* detach this address and delete from list */ 1094 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1095 mc_list[5] = priv->port; 1096 err = mlx4_multicast_detach(mdev->dev, 1097 &priv->rss_map.indir_qp, 1098 mc_list, 1099 MLX4_PROT_ETH, 1100 mclist->reg_id); 1101 if (err) 1102 en_err(priv, "Fail to detach multicast address\n"); 1103 1104 if (mclist->tunnel_reg_id) { 1105 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id); 1106 if (err) 1107 en_err(priv, "Failed to detach multicast address\n"); 1108 } 1109 1110 /* remove from list */ 1111 list_del(&mclist->list); 1112 kfree(mclist); 1113 } else if (mclist->action == MCLIST_ADD) { 1114 /* attach the address */ 1115 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1116 /* needed for B0 steering support */ 1117 mc_list[5] = priv->port; 1118 err = mlx4_multicast_attach(mdev->dev, 1119 &priv->rss_map.indir_qp, 1120 mc_list, 1121 priv->port, 0, 1122 MLX4_PROT_ETH, 1123 &mclist->reg_id); 1124 if (err) 1125 en_err(priv, "Fail to attach multicast address\n"); 1126 1127 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn, 1128 &mclist->tunnel_reg_id); 1129 if (err) 1130 en_err(priv, "Failed to attach multicast address\n"); 1131 } 1132 } 1133 } 1134 } 1135 1136 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, 1137 struct net_device *dev, 1138 struct mlx4_en_dev *mdev) 1139 { 1140 struct netdev_hw_addr *ha; 1141 struct mlx4_mac_entry *entry; 1142 struct hlist_node *tmp; 1143 bool found; 1144 u64 mac; 1145 int err = 0; 1146 struct hlist_head *bucket; 1147 unsigned int i; 1148 int removed = 0; 1149 u32 prev_flags; 1150 1151 /* Note that we do not need to protect our mac_hash traversal with rcu, 1152 * since all modification code is protected by mdev->state_lock 1153 */ 1154 1155 /* find what to remove */ 1156 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1157 bucket = &priv->mac_hash[i]; 1158 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1159 found = false; 1160 netdev_for_each_uc_addr(ha, dev) { 1161 if (ether_addr_equal_64bits(entry->mac, 1162 ha->addr)) { 1163 found = true; 1164 break; 1165 } 1166 } 1167 1168 /* MAC address of the port is not in uc list */ 1169 if (ether_addr_equal_64bits(entry->mac, dev->dev_addr)) 1170 found = true; 1171 1172 if (!found) { 1173 mac = mlx4_mac_to_u64(entry->mac); 1174 mlx4_en_uc_steer_release(priv, entry->mac, 1175 priv->base_qpn, 1176 entry->reg_id); 1177 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1178 1179 hlist_del_rcu(&entry->hlist); 1180 kfree_rcu(entry, rcu); 1181 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", 1182 entry->mac, priv->port); 1183 ++removed; 1184 } 1185 } 1186 } 1187 1188 /* if we didn't remove anything, there is no use in trying to add 1189 * again once we are in a forced promisc mode state 1190 */ 1191 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) 1192 return; 1193 1194 prev_flags = priv->flags; 1195 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 1196 1197 /* find what to add */ 1198 netdev_for_each_uc_addr(ha, dev) { 1199 found = false; 1200 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; 1201 hlist_for_each_entry(entry, bucket, hlist) { 1202 if (ether_addr_equal_64bits(entry->mac, ha->addr)) { 1203 found = true; 1204 break; 1205 } 1206 } 1207 1208 if (!found) { 1209 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1210 if (!entry) { 1211 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", 1212 ha->addr, priv->port); 1213 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1214 break; 1215 } 1216 mac = mlx4_mac_to_u64(ha->addr); 1217 memcpy(entry->mac, ha->addr, ETH_ALEN); 1218 err = mlx4_register_mac(mdev->dev, priv->port, mac); 1219 if (err < 0) { 1220 en_err(priv, "Failed registering MAC %pM on port %d: %d\n", 1221 ha->addr, priv->port, err); 1222 kfree(entry); 1223 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1224 break; 1225 } 1226 err = mlx4_en_uc_steer_add(priv, ha->addr, 1227 &priv->base_qpn, 1228 &entry->reg_id); 1229 if (err) { 1230 en_err(priv, "Failed adding MAC %pM on port %d: %d\n", 1231 ha->addr, priv->port, err); 1232 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1233 kfree(entry); 1234 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1235 break; 1236 } else { 1237 unsigned int mac_hash; 1238 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", 1239 ha->addr, priv->port); 1240 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; 1241 bucket = &priv->mac_hash[mac_hash]; 1242 hlist_add_head_rcu(&entry->hlist, bucket); 1243 } 1244 } 1245 } 1246 1247 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1248 en_warn(priv, "Forcing promiscuous mode on port:%d\n", 1249 priv->port); 1250 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1251 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", 1252 priv->port); 1253 } 1254 } 1255 1256 static void mlx4_en_do_set_rx_mode(struct work_struct *work) 1257 { 1258 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1259 rx_mode_task); 1260 struct mlx4_en_dev *mdev = priv->mdev; 1261 struct net_device *dev = priv->dev; 1262 1263 mutex_lock(&mdev->state_lock); 1264 if (!mdev->device_up) { 1265 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); 1266 goto out; 1267 } 1268 if (!priv->port_up) { 1269 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); 1270 goto out; 1271 } 1272 1273 if (!netif_carrier_ok(dev)) { 1274 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { 1275 if (priv->port_state.link_state) { 1276 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; 1277 netif_carrier_on(dev); 1278 en_dbg(LINK, priv, "Link Up\n"); 1279 } 1280 } 1281 } 1282 1283 if (dev->priv_flags & IFF_UNICAST_FLT) 1284 mlx4_en_do_uc_filter(priv, dev, mdev); 1285 1286 /* Promsicuous mode: disable all filters */ 1287 if ((dev->flags & IFF_PROMISC) || 1288 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { 1289 mlx4_en_set_promisc_mode(priv, mdev); 1290 goto out; 1291 } 1292 1293 /* Not in promiscuous mode */ 1294 if (priv->flags & MLX4_EN_FLAG_PROMISC) 1295 mlx4_en_clear_promisc_mode(priv, mdev); 1296 1297 mlx4_en_do_multicast(priv, dev, mdev); 1298 out: 1299 mutex_unlock(&mdev->state_lock); 1300 } 1301 1302 #ifdef CONFIG_NET_POLL_CONTROLLER 1303 static void mlx4_en_netpoll(struct net_device *dev) 1304 { 1305 struct mlx4_en_priv *priv = netdev_priv(dev); 1306 struct mlx4_en_cq *cq; 1307 int i; 1308 1309 for (i = 0; i < priv->rx_ring_num; i++) { 1310 cq = priv->rx_cq[i]; 1311 napi_schedule(&cq->napi); 1312 } 1313 } 1314 #endif 1315 1316 static void mlx4_en_tx_timeout(struct net_device *dev) 1317 { 1318 struct mlx4_en_priv *priv = netdev_priv(dev); 1319 struct mlx4_en_dev *mdev = priv->mdev; 1320 int i; 1321 1322 if (netif_msg_timer(priv)) 1323 en_warn(priv, "Tx timeout called on port:%d\n", priv->port); 1324 1325 for (i = 0; i < priv->tx_ring_num; i++) { 1326 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) 1327 continue; 1328 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", 1329 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn, 1330 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod); 1331 } 1332 1333 priv->port_stats.tx_timeout++; 1334 en_dbg(DRV, priv, "Scheduling watchdog\n"); 1335 queue_work(mdev->workqueue, &priv->watchdog_task); 1336 } 1337 1338 1339 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev) 1340 { 1341 struct mlx4_en_priv *priv = netdev_priv(dev); 1342 1343 spin_lock_bh(&priv->stats_lock); 1344 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats)); 1345 spin_unlock_bh(&priv->stats_lock); 1346 1347 return &priv->ret_stats; 1348 } 1349 1350 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1351 { 1352 struct mlx4_en_cq *cq; 1353 int i; 1354 1355 /* If we haven't received a specific coalescing setting 1356 * (module param), we set the moderation parameters as follows: 1357 * - moder_cnt is set to the number of mtu sized packets to 1358 * satisfy our coalescing target. 1359 * - moder_time is set to a fixed value. 1360 */ 1361 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1362 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1363 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1364 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1365 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1366 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1367 1368 /* Setup cq moderation params */ 1369 for (i = 0; i < priv->rx_ring_num; i++) { 1370 cq = priv->rx_cq[i]; 1371 cq->moder_cnt = priv->rx_frames; 1372 cq->moder_time = priv->rx_usecs; 1373 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1374 priv->last_moder_packets[i] = 0; 1375 priv->last_moder_bytes[i] = 0; 1376 } 1377 1378 for (i = 0; i < priv->tx_ring_num; i++) { 1379 cq = priv->tx_cq[i]; 1380 cq->moder_cnt = priv->tx_frames; 1381 cq->moder_time = priv->tx_usecs; 1382 } 1383 1384 /* Reset auto-moderation params */ 1385 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1386 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1387 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1388 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1389 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1390 priv->adaptive_rx_coal = 1; 1391 priv->last_moder_jiffies = 0; 1392 priv->last_moder_tx_packets = 0; 1393 } 1394 1395 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1396 { 1397 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1398 struct mlx4_en_cq *cq; 1399 unsigned long packets; 1400 unsigned long rate; 1401 unsigned long avg_pkt_size; 1402 unsigned long rx_packets; 1403 unsigned long rx_bytes; 1404 unsigned long rx_pkt_diff; 1405 int moder_time; 1406 int ring, err; 1407 1408 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1409 return; 1410 1411 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1412 spin_lock_bh(&priv->stats_lock); 1413 rx_packets = priv->rx_ring[ring]->packets; 1414 rx_bytes = priv->rx_ring[ring]->bytes; 1415 spin_unlock_bh(&priv->stats_lock); 1416 1417 rx_pkt_diff = ((unsigned long) (rx_packets - 1418 priv->last_moder_packets[ring])); 1419 packets = rx_pkt_diff; 1420 rate = packets * HZ / period; 1421 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1422 priv->last_moder_bytes[ring])) / packets : 0; 1423 1424 /* Apply auto-moderation only when packet rate 1425 * exceeds a rate that it matters */ 1426 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1427 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1428 if (rate < priv->pkt_rate_low) 1429 moder_time = priv->rx_usecs_low; 1430 else if (rate > priv->pkt_rate_high) 1431 moder_time = priv->rx_usecs_high; 1432 else 1433 moder_time = (rate - priv->pkt_rate_low) * 1434 (priv->rx_usecs_high - priv->rx_usecs_low) / 1435 (priv->pkt_rate_high - priv->pkt_rate_low) + 1436 priv->rx_usecs_low; 1437 } else { 1438 moder_time = priv->rx_usecs_low; 1439 } 1440 1441 if (moder_time != priv->last_moder_time[ring]) { 1442 priv->last_moder_time[ring] = moder_time; 1443 cq = priv->rx_cq[ring]; 1444 cq->moder_time = moder_time; 1445 cq->moder_cnt = priv->rx_frames; 1446 err = mlx4_en_set_cq_moder(priv, cq); 1447 if (err) 1448 en_err(priv, "Failed modifying moderation for cq:%d\n", 1449 ring); 1450 } 1451 priv->last_moder_packets[ring] = rx_packets; 1452 priv->last_moder_bytes[ring] = rx_bytes; 1453 } 1454 1455 priv->last_moder_jiffies = jiffies; 1456 } 1457 1458 static void mlx4_en_do_get_stats(struct work_struct *work) 1459 { 1460 struct delayed_work *delay = to_delayed_work(work); 1461 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1462 stats_task); 1463 struct mlx4_en_dev *mdev = priv->mdev; 1464 int err; 1465 1466 mutex_lock(&mdev->state_lock); 1467 if (mdev->device_up) { 1468 if (priv->port_up) { 1469 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1470 if (err) 1471 en_dbg(HW, priv, "Could not update stats\n"); 1472 1473 mlx4_en_auto_moderation(priv); 1474 } 1475 1476 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1477 } 1478 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1479 mlx4_en_do_set_mac(priv); 1480 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1481 } 1482 mutex_unlock(&mdev->state_lock); 1483 } 1484 1485 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1486 * periodically 1487 */ 1488 static void mlx4_en_service_task(struct work_struct *work) 1489 { 1490 struct delayed_work *delay = to_delayed_work(work); 1491 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1492 service_task); 1493 struct mlx4_en_dev *mdev = priv->mdev; 1494 1495 mutex_lock(&mdev->state_lock); 1496 if (mdev->device_up) { 1497 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1498 mlx4_en_ptp_overflow_check(mdev); 1499 1500 queue_delayed_work(mdev->workqueue, &priv->service_task, 1501 SERVICE_TASK_DELAY); 1502 } 1503 mutex_unlock(&mdev->state_lock); 1504 } 1505 1506 static void mlx4_en_linkstate(struct work_struct *work) 1507 { 1508 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1509 linkstate_task); 1510 struct mlx4_en_dev *mdev = priv->mdev; 1511 int linkstate = priv->link_state; 1512 1513 mutex_lock(&mdev->state_lock); 1514 /* If observable port state changed set carrier state and 1515 * report to system log */ 1516 if (priv->last_link_state != linkstate) { 1517 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1518 en_info(priv, "Link Down\n"); 1519 netif_carrier_off(priv->dev); 1520 } else { 1521 en_info(priv, "Link Up\n"); 1522 netif_carrier_on(priv->dev); 1523 } 1524 } 1525 priv->last_link_state = linkstate; 1526 mutex_unlock(&mdev->state_lock); 1527 } 1528 1529 1530 int mlx4_en_start_port(struct net_device *dev) 1531 { 1532 struct mlx4_en_priv *priv = netdev_priv(dev); 1533 struct mlx4_en_dev *mdev = priv->mdev; 1534 struct mlx4_en_cq *cq; 1535 struct mlx4_en_tx_ring *tx_ring; 1536 int rx_index = 0; 1537 int tx_index = 0; 1538 int err = 0; 1539 int i; 1540 int j; 1541 u8 mc_list[16] = {0}; 1542 1543 if (priv->port_up) { 1544 en_dbg(DRV, priv, "start port called while port already up\n"); 1545 return 0; 1546 } 1547 1548 INIT_LIST_HEAD(&priv->mc_list); 1549 INIT_LIST_HEAD(&priv->curr_list); 1550 INIT_LIST_HEAD(&priv->ethtool_list); 1551 memset(&priv->ethtool_rules[0], 0, 1552 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1553 1554 /* Calculate Rx buf size */ 1555 dev->mtu = min(dev->mtu, priv->max_mtu); 1556 mlx4_en_calc_rx_buf(dev); 1557 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1558 1559 /* Configure rx cq's and rings */ 1560 err = mlx4_en_activate_rx_rings(priv); 1561 if (err) { 1562 en_err(priv, "Failed to activate RX rings\n"); 1563 return err; 1564 } 1565 for (i = 0; i < priv->rx_ring_num; i++) { 1566 cq = priv->rx_cq[i]; 1567 1568 mlx4_en_cq_init_lock(cq); 1569 1570 err = mlx4_en_activate_cq(priv, cq, i); 1571 if (err) { 1572 en_err(priv, "Failed activating Rx CQ\n"); 1573 goto cq_err; 1574 } 1575 for (j = 0; j < cq->size; j++) 1576 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1577 err = mlx4_en_set_cq_moder(priv, cq); 1578 if (err) { 1579 en_err(priv, "Failed setting cq moderation parameters"); 1580 mlx4_en_deactivate_cq(priv, cq); 1581 goto cq_err; 1582 } 1583 mlx4_en_arm_cq(priv, cq); 1584 priv->rx_ring[i]->cqn = cq->mcq.cqn; 1585 ++rx_index; 1586 } 1587 1588 /* Set qp number */ 1589 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1590 err = mlx4_en_get_qp(priv); 1591 if (err) { 1592 en_err(priv, "Failed getting eth qp\n"); 1593 goto cq_err; 1594 } 1595 mdev->mac_removed[priv->port] = 0; 1596 1597 err = mlx4_en_config_rss_steer(priv); 1598 if (err) { 1599 en_err(priv, "Failed configuring rss steering\n"); 1600 goto mac_err; 1601 } 1602 1603 err = mlx4_en_create_drop_qp(priv); 1604 if (err) 1605 goto rss_err; 1606 1607 /* Configure tx cq's and rings */ 1608 for (i = 0; i < priv->tx_ring_num; i++) { 1609 /* Configure cq */ 1610 cq = priv->tx_cq[i]; 1611 err = mlx4_en_activate_cq(priv, cq, i); 1612 if (err) { 1613 en_err(priv, "Failed allocating Tx CQ\n"); 1614 goto tx_err; 1615 } 1616 err = mlx4_en_set_cq_moder(priv, cq); 1617 if (err) { 1618 en_err(priv, "Failed setting cq moderation parameters"); 1619 mlx4_en_deactivate_cq(priv, cq); 1620 goto tx_err; 1621 } 1622 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i); 1623 cq->buf->wqe_index = cpu_to_be16(0xffff); 1624 1625 /* Configure ring */ 1626 tx_ring = priv->tx_ring[i]; 1627 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, 1628 i / priv->num_tx_rings_p_up); 1629 if (err) { 1630 en_err(priv, "Failed allocating Tx ring\n"); 1631 mlx4_en_deactivate_cq(priv, cq); 1632 goto tx_err; 1633 } 1634 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1635 1636 /* Arm CQ for TX completions */ 1637 mlx4_en_arm_cq(priv, cq); 1638 1639 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1640 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1641 *((u32 *) (tx_ring->buf + j)) = 0xffffffff; 1642 ++tx_index; 1643 } 1644 1645 /* Configure port */ 1646 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1647 priv->rx_skb_size + ETH_FCS_LEN, 1648 priv->prof->tx_pause, 1649 priv->prof->tx_ppp, 1650 priv->prof->rx_pause, 1651 priv->prof->rx_ppp); 1652 if (err) { 1653 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1654 priv->port, err); 1655 goto tx_err; 1656 } 1657 /* Set default qp number */ 1658 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1659 if (err) { 1660 en_err(priv, "Failed setting default qp numbers\n"); 1661 goto tx_err; 1662 } 1663 1664 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 1665 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 1666 if (err) { 1667 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 1668 err); 1669 goto tx_err; 1670 } 1671 } 1672 1673 /* Init port */ 1674 en_dbg(HW, priv, "Initializing port\n"); 1675 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1676 if (err) { 1677 en_err(priv, "Failed Initializing port\n"); 1678 goto tx_err; 1679 } 1680 1681 /* Attach rx QP to bradcast address */ 1682 memset(&mc_list[10], 0xff, ETH_ALEN); 1683 mc_list[5] = priv->port; /* needed for B0 steering support */ 1684 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1685 priv->port, 0, MLX4_PROT_ETH, 1686 &priv->broadcast_id)) 1687 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1688 1689 /* Must redo promiscuous mode setup. */ 1690 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1691 1692 /* Schedule multicast task to populate multicast list */ 1693 queue_work(mdev->workqueue, &priv->rx_mode_task); 1694 1695 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap); 1696 1697 #ifdef CONFIG_MLX4_EN_VXLAN 1698 if (priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS) 1699 vxlan_get_rx_port(dev); 1700 #endif 1701 priv->port_up = true; 1702 netif_tx_start_all_queues(dev); 1703 netif_device_attach(dev); 1704 1705 return 0; 1706 1707 tx_err: 1708 while (tx_index--) { 1709 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]); 1710 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]); 1711 } 1712 mlx4_en_destroy_drop_qp(priv); 1713 rss_err: 1714 mlx4_en_release_rss_steer(priv); 1715 mac_err: 1716 mlx4_en_put_qp(priv); 1717 cq_err: 1718 while (rx_index--) 1719 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); 1720 for (i = 0; i < priv->rx_ring_num; i++) 1721 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1722 1723 return err; /* need to close devices */ 1724 } 1725 1726 1727 void mlx4_en_stop_port(struct net_device *dev, int detach) 1728 { 1729 struct mlx4_en_priv *priv = netdev_priv(dev); 1730 struct mlx4_en_dev *mdev = priv->mdev; 1731 struct mlx4_en_mc_list *mclist, *tmp; 1732 struct ethtool_flow_id *flow, *tmp_flow; 1733 int i; 1734 u8 mc_list[16] = {0}; 1735 1736 if (!priv->port_up) { 1737 en_dbg(DRV, priv, "stop port called while port already down\n"); 1738 return; 1739 } 1740 1741 /* close port*/ 1742 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1743 1744 /* Synchronize with tx routine */ 1745 netif_tx_lock_bh(dev); 1746 if (detach) 1747 netif_device_detach(dev); 1748 netif_tx_stop_all_queues(dev); 1749 netif_tx_unlock_bh(dev); 1750 1751 netif_tx_disable(dev); 1752 1753 /* Set port as not active */ 1754 priv->port_up = false; 1755 1756 /* Promsicuous mode */ 1757 if (mdev->dev->caps.steering_mode == 1758 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1759 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | 1760 MLX4_EN_FLAG_MC_PROMISC); 1761 mlx4_flow_steer_promisc_remove(mdev->dev, 1762 priv->port, 1763 MLX4_FS_ALL_DEFAULT); 1764 mlx4_flow_steer_promisc_remove(mdev->dev, 1765 priv->port, 1766 MLX4_FS_MC_DEFAULT); 1767 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { 1768 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 1769 1770 /* Disable promiscouos mode */ 1771 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, 1772 priv->port); 1773 1774 /* Disable Multicast promisc */ 1775 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1776 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, 1777 priv->port); 1778 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1779 } 1780 } 1781 1782 /* Detach All multicasts */ 1783 memset(&mc_list[10], 0xff, ETH_ALEN); 1784 mc_list[5] = priv->port; /* needed for B0 steering support */ 1785 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1786 MLX4_PROT_ETH, priv->broadcast_id); 1787 list_for_each_entry(mclist, &priv->curr_list, list) { 1788 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1789 mc_list[5] = priv->port; 1790 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, 1791 mc_list, MLX4_PROT_ETH, mclist->reg_id); 1792 if (mclist->tunnel_reg_id) 1793 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id); 1794 } 1795 mlx4_en_clear_list(dev); 1796 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1797 list_del(&mclist->list); 1798 kfree(mclist); 1799 } 1800 1801 /* Flush multicast filter */ 1802 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); 1803 1804 /* Remove flow steering rules for the port*/ 1805 if (mdev->dev->caps.steering_mode == 1806 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1807 ASSERT_RTNL(); 1808 list_for_each_entry_safe(flow, tmp_flow, 1809 &priv->ethtool_list, list) { 1810 mlx4_flow_detach(mdev->dev, flow->id); 1811 list_del(&flow->list); 1812 } 1813 } 1814 1815 mlx4_en_destroy_drop_qp(priv); 1816 1817 /* Free TX Rings */ 1818 for (i = 0; i < priv->tx_ring_num; i++) { 1819 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]); 1820 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]); 1821 } 1822 msleep(10); 1823 1824 for (i = 0; i < priv->tx_ring_num; i++) 1825 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]); 1826 1827 /* Free RSS qps */ 1828 mlx4_en_release_rss_steer(priv); 1829 1830 /* Unregister Mac address for the port */ 1831 mlx4_en_put_qp(priv); 1832 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN)) 1833 mdev->mac_removed[priv->port] = 1; 1834 1835 /* Free RX Rings */ 1836 for (i = 0; i < priv->rx_ring_num; i++) { 1837 struct mlx4_en_cq *cq = priv->rx_cq[i]; 1838 1839 local_bh_disable(); 1840 while (!mlx4_en_cq_lock_napi(cq)) { 1841 pr_info("CQ %d locked\n", i); 1842 mdelay(1); 1843 } 1844 local_bh_enable(); 1845 1846 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state)) 1847 msleep(1); 1848 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1849 mlx4_en_deactivate_cq(priv, cq); 1850 } 1851 } 1852 1853 static void mlx4_en_restart(struct work_struct *work) 1854 { 1855 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1856 watchdog_task); 1857 struct mlx4_en_dev *mdev = priv->mdev; 1858 struct net_device *dev = priv->dev; 1859 1860 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1861 1862 mutex_lock(&mdev->state_lock); 1863 if (priv->port_up) { 1864 mlx4_en_stop_port(dev, 1); 1865 if (mlx4_en_start_port(dev)) 1866 en_err(priv, "Failed restarting port %d\n", priv->port); 1867 } 1868 mutex_unlock(&mdev->state_lock); 1869 } 1870 1871 static void mlx4_en_clear_stats(struct net_device *dev) 1872 { 1873 struct mlx4_en_priv *priv = netdev_priv(dev); 1874 struct mlx4_en_dev *mdev = priv->mdev; 1875 int i; 1876 1877 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1878 en_dbg(HW, priv, "Failed dumping statistics\n"); 1879 1880 memset(&priv->stats, 0, sizeof(priv->stats)); 1881 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1882 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1883 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1884 1885 for (i = 0; i < priv->tx_ring_num; i++) { 1886 priv->tx_ring[i]->bytes = 0; 1887 priv->tx_ring[i]->packets = 0; 1888 priv->tx_ring[i]->tx_csum = 0; 1889 } 1890 for (i = 0; i < priv->rx_ring_num; i++) { 1891 priv->rx_ring[i]->bytes = 0; 1892 priv->rx_ring[i]->packets = 0; 1893 priv->rx_ring[i]->csum_ok = 0; 1894 priv->rx_ring[i]->csum_none = 0; 1895 } 1896 } 1897 1898 static int mlx4_en_open(struct net_device *dev) 1899 { 1900 struct mlx4_en_priv *priv = netdev_priv(dev); 1901 struct mlx4_en_dev *mdev = priv->mdev; 1902 int err = 0; 1903 1904 mutex_lock(&mdev->state_lock); 1905 1906 if (!mdev->device_up) { 1907 en_err(priv, "Cannot open - device down/disabled\n"); 1908 err = -EBUSY; 1909 goto out; 1910 } 1911 1912 /* Reset HW statistics and SW counters */ 1913 mlx4_en_clear_stats(dev); 1914 1915 err = mlx4_en_start_port(dev); 1916 if (err) 1917 en_err(priv, "Failed starting port:%d\n", priv->port); 1918 1919 out: 1920 mutex_unlock(&mdev->state_lock); 1921 return err; 1922 } 1923 1924 1925 static int mlx4_en_close(struct net_device *dev) 1926 { 1927 struct mlx4_en_priv *priv = netdev_priv(dev); 1928 struct mlx4_en_dev *mdev = priv->mdev; 1929 1930 en_dbg(IFDOWN, priv, "Close port called\n"); 1931 1932 mutex_lock(&mdev->state_lock); 1933 1934 mlx4_en_stop_port(dev, 0); 1935 netif_carrier_off(dev); 1936 1937 mutex_unlock(&mdev->state_lock); 1938 return 0; 1939 } 1940 1941 void mlx4_en_free_resources(struct mlx4_en_priv *priv) 1942 { 1943 int i; 1944 1945 #ifdef CONFIG_RFS_ACCEL 1946 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap); 1947 priv->dev->rx_cpu_rmap = NULL; 1948 #endif 1949 1950 for (i = 0; i < priv->tx_ring_num; i++) { 1951 if (priv->tx_ring && priv->tx_ring[i]) 1952 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 1953 if (priv->tx_cq && priv->tx_cq[i]) 1954 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 1955 } 1956 1957 for (i = 0; i < priv->rx_ring_num; i++) { 1958 if (priv->rx_ring[i]) 1959 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 1960 priv->prof->rx_ring_size, priv->stride); 1961 if (priv->rx_cq[i]) 1962 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 1963 } 1964 1965 if (priv->base_tx_qpn) { 1966 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num); 1967 priv->base_tx_qpn = 0; 1968 } 1969 } 1970 1971 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 1972 { 1973 struct mlx4_en_port_profile *prof = priv->prof; 1974 int i; 1975 int err; 1976 int node; 1977 1978 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn); 1979 if (err) { 1980 en_err(priv, "failed reserving range for TX rings\n"); 1981 return err; 1982 } 1983 1984 /* Create tx Rings */ 1985 for (i = 0; i < priv->tx_ring_num; i++) { 1986 node = cpu_to_node(i % num_online_cpus()); 1987 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 1988 prof->tx_ring_size, i, TX, node)) 1989 goto err; 1990 1991 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], 1992 priv->base_tx_qpn + i, 1993 prof->tx_ring_size, TXBB_SIZE, 1994 node, i)) 1995 goto err; 1996 } 1997 1998 /* Create rx Rings */ 1999 for (i = 0; i < priv->rx_ring_num; i++) { 2000 node = cpu_to_node(i % num_online_cpus()); 2001 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 2002 prof->rx_ring_size, i, RX, node)) 2003 goto err; 2004 2005 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 2006 prof->rx_ring_size, priv->stride, 2007 node)) 2008 goto err; 2009 } 2010 2011 #ifdef CONFIG_RFS_ACCEL 2012 if (priv->mdev->dev->caps.comp_pool) { 2013 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool); 2014 if (!priv->dev->rx_cpu_rmap) 2015 goto err; 2016 } 2017 #endif 2018 2019 return 0; 2020 2021 err: 2022 en_err(priv, "Failed to allocate NIC resources\n"); 2023 for (i = 0; i < priv->rx_ring_num; i++) { 2024 if (priv->rx_ring[i]) 2025 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2026 prof->rx_ring_size, 2027 priv->stride); 2028 if (priv->rx_cq[i]) 2029 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2030 } 2031 for (i = 0; i < priv->tx_ring_num; i++) { 2032 if (priv->tx_ring[i]) 2033 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2034 if (priv->tx_cq[i]) 2035 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2036 } 2037 return -ENOMEM; 2038 } 2039 2040 2041 void mlx4_en_destroy_netdev(struct net_device *dev) 2042 { 2043 struct mlx4_en_priv *priv = netdev_priv(dev); 2044 struct mlx4_en_dev *mdev = priv->mdev; 2045 2046 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2047 2048 /* Unregister device - this will close the port if it was up */ 2049 if (priv->registered) 2050 unregister_netdev(dev); 2051 2052 if (priv->allocated) 2053 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2054 2055 cancel_delayed_work(&priv->stats_task); 2056 cancel_delayed_work(&priv->service_task); 2057 /* flush any pending task for this netdev */ 2058 flush_workqueue(mdev->workqueue); 2059 2060 /* Detach the netdev so tasks would not attempt to access it */ 2061 mutex_lock(&mdev->state_lock); 2062 mdev->pndev[priv->port] = NULL; 2063 mutex_unlock(&mdev->state_lock); 2064 2065 mlx4_en_free_resources(priv); 2066 2067 kfree(priv->tx_ring); 2068 kfree(priv->tx_cq); 2069 2070 free_netdev(dev); 2071 } 2072 2073 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2074 { 2075 struct mlx4_en_priv *priv = netdev_priv(dev); 2076 struct mlx4_en_dev *mdev = priv->mdev; 2077 int err = 0; 2078 2079 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2080 dev->mtu, new_mtu); 2081 2082 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 2083 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 2084 return -EPERM; 2085 } 2086 dev->mtu = new_mtu; 2087 2088 if (netif_running(dev)) { 2089 mutex_lock(&mdev->state_lock); 2090 if (!mdev->device_up) { 2091 /* NIC is probably restarting - let watchdog task reset 2092 * the port */ 2093 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2094 } else { 2095 mlx4_en_stop_port(dev, 1); 2096 err = mlx4_en_start_port(dev); 2097 if (err) { 2098 en_err(priv, "Failed restarting port:%d\n", 2099 priv->port); 2100 queue_work(mdev->workqueue, &priv->watchdog_task); 2101 } 2102 } 2103 mutex_unlock(&mdev->state_lock); 2104 } 2105 return 0; 2106 } 2107 2108 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2109 { 2110 struct mlx4_en_priv *priv = netdev_priv(dev); 2111 struct mlx4_en_dev *mdev = priv->mdev; 2112 struct hwtstamp_config config; 2113 2114 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2115 return -EFAULT; 2116 2117 /* reserved for future extensions */ 2118 if (config.flags) 2119 return -EINVAL; 2120 2121 /* device doesn't support time stamping */ 2122 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2123 return -EINVAL; 2124 2125 /* TX HW timestamp */ 2126 switch (config.tx_type) { 2127 case HWTSTAMP_TX_OFF: 2128 case HWTSTAMP_TX_ON: 2129 break; 2130 default: 2131 return -ERANGE; 2132 } 2133 2134 /* RX HW timestamp */ 2135 switch (config.rx_filter) { 2136 case HWTSTAMP_FILTER_NONE: 2137 break; 2138 case HWTSTAMP_FILTER_ALL: 2139 case HWTSTAMP_FILTER_SOME: 2140 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2141 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2142 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2143 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2144 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2145 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2146 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2147 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2148 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2149 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2150 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2151 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2152 config.rx_filter = HWTSTAMP_FILTER_ALL; 2153 break; 2154 default: 2155 return -ERANGE; 2156 } 2157 2158 if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) { 2159 config.tx_type = HWTSTAMP_TX_OFF; 2160 config.rx_filter = HWTSTAMP_FILTER_NONE; 2161 } 2162 2163 return copy_to_user(ifr->ifr_data, &config, 2164 sizeof(config)) ? -EFAULT : 0; 2165 } 2166 2167 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2168 { 2169 struct mlx4_en_priv *priv = netdev_priv(dev); 2170 2171 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2172 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2173 } 2174 2175 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2176 { 2177 switch (cmd) { 2178 case SIOCSHWTSTAMP: 2179 return mlx4_en_hwtstamp_set(dev, ifr); 2180 case SIOCGHWTSTAMP: 2181 return mlx4_en_hwtstamp_get(dev, ifr); 2182 default: 2183 return -EOPNOTSUPP; 2184 } 2185 } 2186 2187 static int mlx4_en_set_features(struct net_device *netdev, 2188 netdev_features_t features) 2189 { 2190 struct mlx4_en_priv *priv = netdev_priv(netdev); 2191 2192 if (features & NETIF_F_LOOPBACK) 2193 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK); 2194 else 2195 priv->ctrl_flags &= 2196 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK); 2197 2198 mlx4_en_update_loopback_state(netdev, features); 2199 2200 return 0; 2201 2202 } 2203 2204 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2205 { 2206 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2207 struct mlx4_en_dev *mdev = en_priv->mdev; 2208 u64 mac_u64 = mlx4_mac_to_u64(mac); 2209 2210 if (!is_valid_ether_addr(mac)) 2211 return -EINVAL; 2212 2213 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2214 } 2215 2216 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) 2217 { 2218 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2219 struct mlx4_en_dev *mdev = en_priv->mdev; 2220 2221 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos); 2222 } 2223 2224 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2225 { 2226 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2227 struct mlx4_en_dev *mdev = en_priv->mdev; 2228 2229 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2230 } 2231 2232 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2233 { 2234 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2235 struct mlx4_en_dev *mdev = en_priv->mdev; 2236 2237 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2238 } 2239 2240 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2241 { 2242 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2243 struct mlx4_en_dev *mdev = en_priv->mdev; 2244 2245 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2246 } 2247 2248 #define PORT_ID_BYTE_LEN 8 2249 static int mlx4_en_get_phys_port_id(struct net_device *dev, 2250 struct netdev_phys_port_id *ppid) 2251 { 2252 struct mlx4_en_priv *priv = netdev_priv(dev); 2253 struct mlx4_dev *mdev = priv->mdev->dev; 2254 int i; 2255 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2256 2257 if (!phys_port_id) 2258 return -EOPNOTSUPP; 2259 2260 ppid->id_len = sizeof(phys_port_id); 2261 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2262 ppid->id[i] = phys_port_id & 0xff; 2263 phys_port_id >>= 8; 2264 } 2265 return 0; 2266 } 2267 2268 #ifdef CONFIG_MLX4_EN_VXLAN 2269 static void mlx4_en_add_vxlan_offloads(struct work_struct *work) 2270 { 2271 int ret; 2272 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2273 vxlan_add_task); 2274 2275 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port); 2276 if (ret) 2277 goto out; 2278 2279 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2280 VXLAN_STEER_BY_OUTER_MAC, 1); 2281 out: 2282 if (ret) 2283 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2284 } 2285 2286 static void mlx4_en_del_vxlan_offloads(struct work_struct *work) 2287 { 2288 int ret; 2289 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2290 vxlan_del_task); 2291 2292 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2293 VXLAN_STEER_BY_OUTER_MAC, 0); 2294 if (ret) 2295 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2296 2297 priv->vxlan_port = 0; 2298 } 2299 2300 static void mlx4_en_add_vxlan_port(struct net_device *dev, 2301 sa_family_t sa_family, __be16 port) 2302 { 2303 struct mlx4_en_priv *priv = netdev_priv(dev); 2304 __be16 current_port; 2305 2306 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS)) 2307 return; 2308 2309 if (sa_family == AF_INET6) 2310 return; 2311 2312 current_port = priv->vxlan_port; 2313 if (current_port && current_port != port) { 2314 en_warn(priv, "vxlan port %d configured, can't add port %d\n", 2315 ntohs(current_port), ntohs(port)); 2316 return; 2317 } 2318 2319 priv->vxlan_port = port; 2320 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task); 2321 } 2322 2323 static void mlx4_en_del_vxlan_port(struct net_device *dev, 2324 sa_family_t sa_family, __be16 port) 2325 { 2326 struct mlx4_en_priv *priv = netdev_priv(dev); 2327 __be16 current_port; 2328 2329 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2330 return; 2331 2332 if (sa_family == AF_INET6) 2333 return; 2334 2335 current_port = priv->vxlan_port; 2336 if (current_port != port) { 2337 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port)); 2338 return; 2339 } 2340 2341 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task); 2342 } 2343 #endif 2344 2345 static const struct net_device_ops mlx4_netdev_ops = { 2346 .ndo_open = mlx4_en_open, 2347 .ndo_stop = mlx4_en_close, 2348 .ndo_start_xmit = mlx4_en_xmit, 2349 .ndo_select_queue = mlx4_en_select_queue, 2350 .ndo_get_stats = mlx4_en_get_stats, 2351 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2352 .ndo_set_mac_address = mlx4_en_set_mac, 2353 .ndo_validate_addr = eth_validate_addr, 2354 .ndo_change_mtu = mlx4_en_change_mtu, 2355 .ndo_do_ioctl = mlx4_en_ioctl, 2356 .ndo_tx_timeout = mlx4_en_tx_timeout, 2357 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2358 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2359 #ifdef CONFIG_NET_POLL_CONTROLLER 2360 .ndo_poll_controller = mlx4_en_netpoll, 2361 #endif 2362 .ndo_set_features = mlx4_en_set_features, 2363 .ndo_setup_tc = mlx4_en_setup_tc, 2364 #ifdef CONFIG_RFS_ACCEL 2365 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2366 #endif 2367 #ifdef CONFIG_NET_RX_BUSY_POLL 2368 .ndo_busy_poll = mlx4_en_low_latency_recv, 2369 #endif 2370 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2371 #ifdef CONFIG_MLX4_EN_VXLAN 2372 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2373 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2374 #endif 2375 }; 2376 2377 static const struct net_device_ops mlx4_netdev_ops_master = { 2378 .ndo_open = mlx4_en_open, 2379 .ndo_stop = mlx4_en_close, 2380 .ndo_start_xmit = mlx4_en_xmit, 2381 .ndo_select_queue = mlx4_en_select_queue, 2382 .ndo_get_stats = mlx4_en_get_stats, 2383 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2384 .ndo_set_mac_address = mlx4_en_set_mac, 2385 .ndo_validate_addr = eth_validate_addr, 2386 .ndo_change_mtu = mlx4_en_change_mtu, 2387 .ndo_tx_timeout = mlx4_en_tx_timeout, 2388 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2389 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2390 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2391 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2392 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2393 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2394 .ndo_get_vf_config = mlx4_en_get_vf_config, 2395 #ifdef CONFIG_NET_POLL_CONTROLLER 2396 .ndo_poll_controller = mlx4_en_netpoll, 2397 #endif 2398 .ndo_set_features = mlx4_en_set_features, 2399 .ndo_setup_tc = mlx4_en_setup_tc, 2400 #ifdef CONFIG_RFS_ACCEL 2401 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2402 #endif 2403 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2404 }; 2405 2406 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 2407 struct mlx4_en_port_profile *prof) 2408 { 2409 struct net_device *dev; 2410 struct mlx4_en_priv *priv; 2411 int i; 2412 int err; 2413 u64 mac_u64; 2414 2415 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 2416 MAX_TX_RINGS, MAX_RX_RINGS); 2417 if (dev == NULL) 2418 return -ENOMEM; 2419 2420 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 2421 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 2422 2423 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev); 2424 dev->dev_port = port - 1; 2425 2426 /* 2427 * Initialize driver private data 2428 */ 2429 2430 priv = netdev_priv(dev); 2431 memset(priv, 0, sizeof(struct mlx4_en_priv)); 2432 priv->dev = dev; 2433 priv->mdev = mdev; 2434 priv->ddev = &mdev->pdev->dev; 2435 priv->prof = prof; 2436 priv->port = port; 2437 priv->port_up = false; 2438 priv->flags = prof->flags; 2439 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 2440 MLX4_WQE_CTRL_SOLICITED); 2441 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 2442 priv->tx_ring_num = prof->tx_ring_num; 2443 2444 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 2445 GFP_KERNEL); 2446 if (!priv->tx_ring) { 2447 err = -ENOMEM; 2448 goto out; 2449 } 2450 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 2451 GFP_KERNEL); 2452 if (!priv->tx_cq) { 2453 err = -ENOMEM; 2454 goto out; 2455 } 2456 priv->rx_ring_num = prof->rx_ring_num; 2457 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 2458 priv->mac_index = -1; 2459 priv->msg_enable = MLX4_EN_MSG_LEVEL; 2460 spin_lock_init(&priv->stats_lock); 2461 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 2462 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 2463 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 2464 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 2465 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 2466 #ifdef CONFIG_MLX4_EN_VXLAN 2467 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads); 2468 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads); 2469 #endif 2470 #ifdef CONFIG_MLX4_EN_DCB 2471 if (!mlx4_is_slave(priv->mdev->dev)) { 2472 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) { 2473 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 2474 } else { 2475 en_info(priv, "enabling only PFC DCB ops\n"); 2476 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 2477 } 2478 } 2479 #endif 2480 2481 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 2482 INIT_HLIST_HEAD(&priv->mac_hash[i]); 2483 2484 /* Query for default mac and max mtu */ 2485 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 2486 2487 /* Set default MAC */ 2488 dev->addr_len = ETH_ALEN; 2489 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 2490 if (!is_valid_ether_addr(dev->dev_addr)) { 2491 if (mlx4_is_slave(priv->mdev->dev)) { 2492 eth_hw_addr_random(dev); 2493 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 2494 mac_u64 = mlx4_mac_to_u64(dev->dev_addr); 2495 mdev->dev->caps.def_mac[priv->port] = mac_u64; 2496 } else { 2497 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 2498 priv->port, dev->dev_addr); 2499 err = -EINVAL; 2500 goto out; 2501 } 2502 } 2503 2504 memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac)); 2505 2506 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2507 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2508 err = mlx4_en_alloc_resources(priv); 2509 if (err) 2510 goto out; 2511 2512 #ifdef CONFIG_RFS_ACCEL 2513 INIT_LIST_HEAD(&priv->filters); 2514 spin_lock_init(&priv->filters_lock); 2515 #endif 2516 2517 /* Initialize time stamping config */ 2518 priv->hwtstamp_config.flags = 0; 2519 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 2520 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 2521 2522 /* Allocate page for receive rings */ 2523 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 2524 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE); 2525 if (err) { 2526 en_err(priv, "Failed to allocate page for rx qps\n"); 2527 goto out; 2528 } 2529 priv->allocated = 1; 2530 2531 /* 2532 * Initialize netdev entry points 2533 */ 2534 if (mlx4_is_master(priv->mdev->dev)) 2535 dev->netdev_ops = &mlx4_netdev_ops_master; 2536 else 2537 dev->netdev_ops = &mlx4_netdev_ops; 2538 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 2539 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 2540 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 2541 2542 SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops); 2543 2544 /* 2545 * Set driver features 2546 */ 2547 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2548 if (mdev->LSO_support) 2549 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2550 2551 dev->vlan_features = dev->hw_features; 2552 2553 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 2554 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 2555 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 2556 NETIF_F_HW_VLAN_CTAG_FILTER; 2557 dev->hw_features |= NETIF_F_LOOPBACK; 2558 2559 if (mdev->dev->caps.steering_mode == 2560 MLX4_STEERING_MODE_DEVICE_MANAGED) 2561 dev->hw_features |= NETIF_F_NTUPLE; 2562 2563 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 2564 dev->priv_flags |= IFF_UNICAST_FLT; 2565 2566 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 2567 dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2568 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL; 2569 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; 2570 dev->features |= NETIF_F_GSO_UDP_TUNNEL; 2571 } 2572 2573 mdev->pndev[port] = dev; 2574 2575 netif_carrier_off(dev); 2576 mlx4_en_set_default_moderation(priv); 2577 2578 err = register_netdev(dev); 2579 if (err) { 2580 en_err(priv, "Netdev registration failed for port %d\n", port); 2581 goto out; 2582 } 2583 priv->registered = 1; 2584 2585 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 2586 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 2587 2588 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 2589 2590 /* Configure port */ 2591 mlx4_en_calc_rx_buf(dev); 2592 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 2593 priv->rx_skb_size + ETH_FCS_LEN, 2594 prof->tx_pause, prof->tx_ppp, 2595 prof->rx_pause, prof->rx_ppp); 2596 if (err) { 2597 en_err(priv, "Failed setting port general configurations " 2598 "for port %d, with error %d\n", priv->port, err); 2599 goto out; 2600 } 2601 2602 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 2603 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 2604 if (err) { 2605 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 2606 err); 2607 goto out; 2608 } 2609 } 2610 2611 /* Init port */ 2612 en_warn(priv, "Initializing port\n"); 2613 err = mlx4_INIT_PORT(mdev->dev, priv->port); 2614 if (err) { 2615 en_err(priv, "Failed Initializing port\n"); 2616 goto out; 2617 } 2618 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 2619 2620 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2621 queue_delayed_work(mdev->workqueue, &priv->service_task, 2622 SERVICE_TASK_DELAY); 2623 2624 return 0; 2625 2626 out: 2627 mlx4_en_destroy_netdev(dev); 2628 return err; 2629 } 2630 2631