1 /* 2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 * 32 */ 33 34 #include <linux/etherdevice.h> 35 #include <linux/tcp.h> 36 #include <linux/if_vlan.h> 37 #include <linux/delay.h> 38 #include <linux/slab.h> 39 #include <linux/hash.h> 40 #include <net/ip.h> 41 #include <net/busy_poll.h> 42 43 #include <linux/mlx4/driver.h> 44 #include <linux/mlx4/device.h> 45 #include <linux/mlx4/cmd.h> 46 #include <linux/mlx4/cq.h> 47 48 #include "mlx4_en.h" 49 #include "en_port.h" 50 51 int mlx4_en_setup_tc(struct net_device *dev, u8 up) 52 { 53 struct mlx4_en_priv *priv = netdev_priv(dev); 54 int i; 55 unsigned int offset = 0; 56 57 if (up && up != MLX4_EN_NUM_UP) 58 return -EINVAL; 59 60 netdev_set_num_tc(dev, up); 61 62 /* Partition Tx queues evenly amongst UP's */ 63 for (i = 0; i < up; i++) { 64 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset); 65 offset += priv->num_tx_rings_p_up; 66 } 67 68 return 0; 69 } 70 71 #ifdef CONFIG_NET_RX_BUSY_POLL 72 /* must be called with local_bh_disable()d */ 73 static int mlx4_en_low_latency_recv(struct napi_struct *napi) 74 { 75 struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi); 76 struct net_device *dev = cq->dev; 77 struct mlx4_en_priv *priv = netdev_priv(dev); 78 struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring]; 79 int done; 80 81 if (!priv->port_up) 82 return LL_FLUSH_FAILED; 83 84 if (!mlx4_en_cq_lock_poll(cq)) 85 return LL_FLUSH_BUSY; 86 87 done = mlx4_en_process_rx_cq(dev, cq, 4); 88 if (likely(done)) 89 rx_ring->cleaned += done; 90 else 91 rx_ring->misses++; 92 93 mlx4_en_cq_unlock_poll(cq); 94 95 return done; 96 } 97 #endif /* CONFIG_NET_RX_BUSY_POLL */ 98 99 #ifdef CONFIG_RFS_ACCEL 100 101 struct mlx4_en_filter { 102 struct list_head next; 103 struct work_struct work; 104 105 u8 ip_proto; 106 __be32 src_ip; 107 __be32 dst_ip; 108 __be16 src_port; 109 __be16 dst_port; 110 111 int rxq_index; 112 struct mlx4_en_priv *priv; 113 u32 flow_id; /* RFS infrastructure id */ 114 int id; /* mlx4_en driver id */ 115 u64 reg_id; /* Flow steering API id */ 116 u8 activated; /* Used to prevent expiry before filter 117 * is attached 118 */ 119 struct hlist_node filter_chain; 120 }; 121 122 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv); 123 124 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto) 125 { 126 switch (ip_proto) { 127 case IPPROTO_UDP: 128 return MLX4_NET_TRANS_RULE_ID_UDP; 129 case IPPROTO_TCP: 130 return MLX4_NET_TRANS_RULE_ID_TCP; 131 default: 132 return -EPROTONOSUPPORT; 133 } 134 }; 135 136 static void mlx4_en_filter_work(struct work_struct *work) 137 { 138 struct mlx4_en_filter *filter = container_of(work, 139 struct mlx4_en_filter, 140 work); 141 struct mlx4_en_priv *priv = filter->priv; 142 struct mlx4_spec_list spec_tcp_udp = { 143 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto), 144 { 145 .tcp_udp = { 146 .dst_port = filter->dst_port, 147 .dst_port_msk = (__force __be16)-1, 148 .src_port = filter->src_port, 149 .src_port_msk = (__force __be16)-1, 150 }, 151 }, 152 }; 153 struct mlx4_spec_list spec_ip = { 154 .id = MLX4_NET_TRANS_RULE_ID_IPV4, 155 { 156 .ipv4 = { 157 .dst_ip = filter->dst_ip, 158 .dst_ip_msk = (__force __be32)-1, 159 .src_ip = filter->src_ip, 160 .src_ip_msk = (__force __be32)-1, 161 }, 162 }, 163 }; 164 struct mlx4_spec_list spec_eth = { 165 .id = MLX4_NET_TRANS_RULE_ID_ETH, 166 }; 167 struct mlx4_net_trans_rule rule = { 168 .list = LIST_HEAD_INIT(rule.list), 169 .queue_mode = MLX4_NET_TRANS_Q_LIFO, 170 .exclusive = 1, 171 .allow_loopback = 1, 172 .promisc_mode = MLX4_FS_REGULAR, 173 .port = priv->port, 174 .priority = MLX4_DOMAIN_RFS, 175 }; 176 int rc; 177 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 178 179 if (spec_tcp_udp.id < 0) { 180 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n", 181 filter->ip_proto); 182 goto ignore; 183 } 184 list_add_tail(&spec_eth.list, &rule.list); 185 list_add_tail(&spec_ip.list, &rule.list); 186 list_add_tail(&spec_tcp_udp.list, &rule.list); 187 188 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn; 189 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN); 190 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 191 192 filter->activated = 0; 193 194 if (filter->reg_id) { 195 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 196 if (rc && rc != -ENOENT) 197 en_err(priv, "Error detaching flow. rc = %d\n", rc); 198 } 199 200 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id); 201 if (rc) 202 en_err(priv, "Error attaching flow. err = %d\n", rc); 203 204 ignore: 205 mlx4_en_filter_rfs_expire(priv); 206 207 filter->activated = 1; 208 } 209 210 static inline struct hlist_head * 211 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 212 __be16 src_port, __be16 dst_port) 213 { 214 unsigned long l; 215 int bucket_idx; 216 217 l = (__force unsigned long)src_port | 218 ((__force unsigned long)dst_port << 2); 219 l ^= (__force unsigned long)(src_ip ^ dst_ip); 220 221 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT); 222 223 return &priv->filter_hash[bucket_idx]; 224 } 225 226 static struct mlx4_en_filter * 227 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip, 228 __be32 dst_ip, u8 ip_proto, __be16 src_port, 229 __be16 dst_port, u32 flow_id) 230 { 231 struct mlx4_en_filter *filter = NULL; 232 233 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC); 234 if (!filter) 235 return NULL; 236 237 filter->priv = priv; 238 filter->rxq_index = rxq_index; 239 INIT_WORK(&filter->work, mlx4_en_filter_work); 240 241 filter->src_ip = src_ip; 242 filter->dst_ip = dst_ip; 243 filter->ip_proto = ip_proto; 244 filter->src_port = src_port; 245 filter->dst_port = dst_port; 246 247 filter->flow_id = flow_id; 248 249 filter->id = priv->last_filter_id++ % RPS_NO_FILTER; 250 251 list_add_tail(&filter->next, &priv->filters); 252 hlist_add_head(&filter->filter_chain, 253 filter_hash_bucket(priv, src_ip, dst_ip, src_port, 254 dst_port)); 255 256 return filter; 257 } 258 259 static void mlx4_en_filter_free(struct mlx4_en_filter *filter) 260 { 261 struct mlx4_en_priv *priv = filter->priv; 262 int rc; 263 264 list_del(&filter->next); 265 266 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 267 if (rc && rc != -ENOENT) 268 en_err(priv, "Error detaching flow. rc = %d\n", rc); 269 270 kfree(filter); 271 } 272 273 static inline struct mlx4_en_filter * 274 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 275 u8 ip_proto, __be16 src_port, __be16 dst_port) 276 { 277 struct mlx4_en_filter *filter; 278 struct mlx4_en_filter *ret = NULL; 279 280 hlist_for_each_entry(filter, 281 filter_hash_bucket(priv, src_ip, dst_ip, 282 src_port, dst_port), 283 filter_chain) { 284 if (filter->src_ip == src_ip && 285 filter->dst_ip == dst_ip && 286 filter->ip_proto == ip_proto && 287 filter->src_port == src_port && 288 filter->dst_port == dst_port) { 289 ret = filter; 290 break; 291 } 292 } 293 294 return ret; 295 } 296 297 static int 298 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 299 u16 rxq_index, u32 flow_id) 300 { 301 struct mlx4_en_priv *priv = netdev_priv(net_dev); 302 struct mlx4_en_filter *filter; 303 const struct iphdr *ip; 304 const __be16 *ports; 305 u8 ip_proto; 306 __be32 src_ip; 307 __be32 dst_ip; 308 __be16 src_port; 309 __be16 dst_port; 310 int nhoff = skb_network_offset(skb); 311 int ret = 0; 312 313 if (skb->protocol != htons(ETH_P_IP)) 314 return -EPROTONOSUPPORT; 315 316 ip = (const struct iphdr *)(skb->data + nhoff); 317 if (ip_is_fragment(ip)) 318 return -EPROTONOSUPPORT; 319 320 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP)) 321 return -EPROTONOSUPPORT; 322 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); 323 324 ip_proto = ip->protocol; 325 src_ip = ip->saddr; 326 dst_ip = ip->daddr; 327 src_port = ports[0]; 328 dst_port = ports[1]; 329 330 spin_lock_bh(&priv->filters_lock); 331 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto, 332 src_port, dst_port); 333 if (filter) { 334 if (filter->rxq_index == rxq_index) 335 goto out; 336 337 filter->rxq_index = rxq_index; 338 } else { 339 filter = mlx4_en_filter_alloc(priv, rxq_index, 340 src_ip, dst_ip, ip_proto, 341 src_port, dst_port, flow_id); 342 if (!filter) { 343 ret = -ENOMEM; 344 goto err; 345 } 346 } 347 348 queue_work(priv->mdev->workqueue, &filter->work); 349 350 out: 351 ret = filter->id; 352 err: 353 spin_unlock_bh(&priv->filters_lock); 354 355 return ret; 356 } 357 358 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv) 359 { 360 struct mlx4_en_filter *filter, *tmp; 361 LIST_HEAD(del_list); 362 363 spin_lock_bh(&priv->filters_lock); 364 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 365 list_move(&filter->next, &del_list); 366 hlist_del(&filter->filter_chain); 367 } 368 spin_unlock_bh(&priv->filters_lock); 369 370 list_for_each_entry_safe(filter, tmp, &del_list, next) { 371 cancel_work_sync(&filter->work); 372 mlx4_en_filter_free(filter); 373 } 374 } 375 376 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv) 377 { 378 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL; 379 LIST_HEAD(del_list); 380 int i = 0; 381 382 spin_lock_bh(&priv->filters_lock); 383 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 384 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA) 385 break; 386 387 if (filter->activated && 388 !work_pending(&filter->work) && 389 rps_may_expire_flow(priv->dev, 390 filter->rxq_index, filter->flow_id, 391 filter->id)) { 392 list_move(&filter->next, &del_list); 393 hlist_del(&filter->filter_chain); 394 } else 395 last_filter = filter; 396 397 i++; 398 } 399 400 if (last_filter && (&last_filter->next != priv->filters.next)) 401 list_move(&priv->filters, &last_filter->next); 402 403 spin_unlock_bh(&priv->filters_lock); 404 405 list_for_each_entry_safe(filter, tmp, &del_list, next) 406 mlx4_en_filter_free(filter); 407 } 408 #endif 409 410 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev, 411 __be16 proto, u16 vid) 412 { 413 struct mlx4_en_priv *priv = netdev_priv(dev); 414 struct mlx4_en_dev *mdev = priv->mdev; 415 int err; 416 int idx; 417 418 en_dbg(HW, priv, "adding VLAN:%d\n", vid); 419 420 set_bit(vid, priv->active_vlans); 421 422 /* Add VID to port VLAN filter */ 423 mutex_lock(&mdev->state_lock); 424 if (mdev->device_up && priv->port_up) { 425 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 426 if (err) 427 en_err(priv, "Failed configuring VLAN filter\n"); 428 } 429 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx)) 430 en_dbg(HW, priv, "failed adding vlan %d\n", vid); 431 mutex_unlock(&mdev->state_lock); 432 433 return 0; 434 } 435 436 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, 437 __be16 proto, u16 vid) 438 { 439 struct mlx4_en_priv *priv = netdev_priv(dev); 440 struct mlx4_en_dev *mdev = priv->mdev; 441 int err; 442 443 en_dbg(HW, priv, "Killing VID:%d\n", vid); 444 445 clear_bit(vid, priv->active_vlans); 446 447 /* Remove VID from port VLAN filter */ 448 mutex_lock(&mdev->state_lock); 449 mlx4_unregister_vlan(mdev->dev, priv->port, vid); 450 451 if (mdev->device_up && priv->port_up) { 452 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 453 if (err) 454 en_err(priv, "Failed configuring VLAN filter\n"); 455 } 456 mutex_unlock(&mdev->state_lock); 457 458 return 0; 459 } 460 461 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) 462 { 463 int i; 464 for (i = ETH_ALEN - 1; i >= 0; --i) { 465 dst_mac[i] = src_mac & 0xff; 466 src_mac >>= 8; 467 } 468 memset(&dst_mac[ETH_ALEN], 0, 2); 469 } 470 471 472 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr, 473 int qpn, u64 *reg_id) 474 { 475 int err; 476 struct mlx4_spec_list spec_eth_outer = { {NULL} }; 477 struct mlx4_spec_list spec_vxlan = { {NULL} }; 478 struct mlx4_spec_list spec_eth_inner = { {NULL} }; 479 480 struct mlx4_net_trans_rule rule = { 481 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 482 .exclusive = 0, 483 .allow_loopback = 1, 484 .promisc_mode = MLX4_FS_REGULAR, 485 .priority = MLX4_DOMAIN_NIC, 486 }; 487 488 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 489 490 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 491 return 0; /* do nothing */ 492 493 rule.port = priv->port; 494 rule.qpn = qpn; 495 INIT_LIST_HEAD(&rule.list); 496 497 spec_eth_outer.id = MLX4_NET_TRANS_RULE_ID_ETH; 498 memcpy(spec_eth_outer.eth.dst_mac, addr, ETH_ALEN); 499 memcpy(spec_eth_outer.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 500 501 spec_vxlan.id = MLX4_NET_TRANS_RULE_ID_VXLAN; /* any vxlan header */ 502 spec_eth_inner.id = MLX4_NET_TRANS_RULE_ID_ETH; /* any inner eth header */ 503 504 list_add_tail(&spec_eth_outer.list, &rule.list); 505 list_add_tail(&spec_vxlan.list, &rule.list); 506 list_add_tail(&spec_eth_inner.list, &rule.list); 507 508 err = mlx4_flow_attach(priv->mdev->dev, &rule, reg_id); 509 if (err) { 510 en_err(priv, "failed to add vxlan steering rule, err %d\n", err); 511 return err; 512 } 513 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id); 514 return 0; 515 } 516 517 518 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv, 519 unsigned char *mac, int *qpn, u64 *reg_id) 520 { 521 struct mlx4_en_dev *mdev = priv->mdev; 522 struct mlx4_dev *dev = mdev->dev; 523 int err; 524 525 switch (dev->caps.steering_mode) { 526 case MLX4_STEERING_MODE_B0: { 527 struct mlx4_qp qp; 528 u8 gid[16] = {0}; 529 530 qp.qpn = *qpn; 531 memcpy(&gid[10], mac, ETH_ALEN); 532 gid[5] = priv->port; 533 534 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH); 535 break; 536 } 537 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 538 struct mlx4_spec_list spec_eth = { {NULL} }; 539 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 540 541 struct mlx4_net_trans_rule rule = { 542 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 543 .exclusive = 0, 544 .allow_loopback = 1, 545 .promisc_mode = MLX4_FS_REGULAR, 546 .priority = MLX4_DOMAIN_NIC, 547 }; 548 549 rule.port = priv->port; 550 rule.qpn = *qpn; 551 INIT_LIST_HEAD(&rule.list); 552 553 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH; 554 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN); 555 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 556 list_add_tail(&spec_eth.list, &rule.list); 557 558 err = mlx4_flow_attach(dev, &rule, reg_id); 559 break; 560 } 561 default: 562 return -EINVAL; 563 } 564 if (err) 565 en_warn(priv, "Failed Attaching Unicast\n"); 566 567 return err; 568 } 569 570 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv, 571 unsigned char *mac, int qpn, u64 reg_id) 572 { 573 struct mlx4_en_dev *mdev = priv->mdev; 574 struct mlx4_dev *dev = mdev->dev; 575 576 switch (dev->caps.steering_mode) { 577 case MLX4_STEERING_MODE_B0: { 578 struct mlx4_qp qp; 579 u8 gid[16] = {0}; 580 581 qp.qpn = qpn; 582 memcpy(&gid[10], mac, ETH_ALEN); 583 gid[5] = priv->port; 584 585 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH); 586 break; 587 } 588 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 589 mlx4_flow_detach(dev, reg_id); 590 break; 591 } 592 default: 593 en_err(priv, "Invalid steering mode.\n"); 594 } 595 } 596 597 static int mlx4_en_get_qp(struct mlx4_en_priv *priv) 598 { 599 struct mlx4_en_dev *mdev = priv->mdev; 600 struct mlx4_dev *dev = mdev->dev; 601 struct mlx4_mac_entry *entry; 602 int index = 0; 603 int err = 0; 604 u64 reg_id; 605 int *qpn = &priv->base_qpn; 606 u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr); 607 608 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n", 609 priv->dev->dev_addr); 610 index = mlx4_register_mac(dev, priv->port, mac); 611 if (index < 0) { 612 err = index; 613 en_err(priv, "Failed adding MAC: %pM\n", 614 priv->dev->dev_addr); 615 return err; 616 } 617 618 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 619 int base_qpn = mlx4_get_base_qpn(dev, priv->port); 620 *qpn = base_qpn + index; 621 return 0; 622 } 623 624 err = mlx4_qp_reserve_range(dev, 1, 1, qpn); 625 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); 626 if (err) { 627 en_err(priv, "Failed to reserve qp for mac registration\n"); 628 goto qp_err; 629 } 630 631 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); 632 if (err) 633 goto steer_err; 634 635 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn, 636 &priv->tunnel_reg_id); 637 if (err) 638 goto tunnel_err; 639 640 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 641 if (!entry) { 642 err = -ENOMEM; 643 goto alloc_err; 644 } 645 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac)); 646 entry->reg_id = reg_id; 647 648 hlist_add_head_rcu(&entry->hlist, 649 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); 650 651 return 0; 652 653 alloc_err: 654 if (priv->tunnel_reg_id) 655 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 656 tunnel_err: 657 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 658 659 steer_err: 660 mlx4_qp_release_range(dev, *qpn, 1); 661 662 qp_err: 663 mlx4_unregister_mac(dev, priv->port, mac); 664 return err; 665 } 666 667 static void mlx4_en_put_qp(struct mlx4_en_priv *priv) 668 { 669 struct mlx4_en_dev *mdev = priv->mdev; 670 struct mlx4_dev *dev = mdev->dev; 671 int qpn = priv->base_qpn; 672 u64 mac; 673 674 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 675 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr); 676 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 677 priv->dev->dev_addr); 678 mlx4_unregister_mac(dev, priv->port, mac); 679 } else { 680 struct mlx4_mac_entry *entry; 681 struct hlist_node *tmp; 682 struct hlist_head *bucket; 683 unsigned int i; 684 685 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 686 bucket = &priv->mac_hash[i]; 687 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 688 mac = mlx4_en_mac_to_u64(entry->mac); 689 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 690 entry->mac); 691 mlx4_en_uc_steer_release(priv, entry->mac, 692 qpn, entry->reg_id); 693 694 mlx4_unregister_mac(dev, priv->port, mac); 695 hlist_del_rcu(&entry->hlist); 696 kfree_rcu(entry, rcu); 697 } 698 } 699 700 if (priv->tunnel_reg_id) { 701 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 702 priv->tunnel_reg_id = 0; 703 } 704 705 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", 706 priv->port, qpn); 707 mlx4_qp_release_range(dev, qpn, 1); 708 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 709 } 710 } 711 712 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, 713 unsigned char *new_mac, unsigned char *prev_mac) 714 { 715 struct mlx4_en_dev *mdev = priv->mdev; 716 struct mlx4_dev *dev = mdev->dev; 717 int err = 0; 718 u64 new_mac_u64 = mlx4_en_mac_to_u64(new_mac); 719 720 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { 721 struct hlist_head *bucket; 722 unsigned int mac_hash; 723 struct mlx4_mac_entry *entry; 724 struct hlist_node *tmp; 725 u64 prev_mac_u64 = mlx4_en_mac_to_u64(prev_mac); 726 727 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; 728 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 729 if (ether_addr_equal_64bits(entry->mac, prev_mac)) { 730 mlx4_en_uc_steer_release(priv, entry->mac, 731 qpn, entry->reg_id); 732 mlx4_unregister_mac(dev, priv->port, 733 prev_mac_u64); 734 hlist_del_rcu(&entry->hlist); 735 synchronize_rcu(); 736 memcpy(entry->mac, new_mac, ETH_ALEN); 737 entry->reg_id = 0; 738 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; 739 hlist_add_head_rcu(&entry->hlist, 740 &priv->mac_hash[mac_hash]); 741 mlx4_register_mac(dev, priv->port, new_mac_u64); 742 err = mlx4_en_uc_steer_add(priv, new_mac, 743 &qpn, 744 &entry->reg_id); 745 if (err) 746 return err; 747 if (priv->tunnel_reg_id) { 748 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 749 priv->tunnel_reg_id = 0; 750 } 751 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn, 752 &priv->tunnel_reg_id); 753 return err; 754 } 755 } 756 return -EINVAL; 757 } 758 759 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); 760 } 761 762 u64 mlx4_en_mac_to_u64(u8 *addr) 763 { 764 u64 mac = 0; 765 int i; 766 767 for (i = 0; i < ETH_ALEN; i++) { 768 mac <<= 8; 769 mac |= addr[i]; 770 } 771 return mac; 772 } 773 774 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv) 775 { 776 int err = 0; 777 778 if (priv->port_up) { 779 /* Remove old MAC and insert the new one */ 780 err = mlx4_en_replace_mac(priv, priv->base_qpn, 781 priv->dev->dev_addr, priv->prev_mac); 782 if (err) 783 en_err(priv, "Failed changing HW MAC address\n"); 784 memcpy(priv->prev_mac, priv->dev->dev_addr, 785 sizeof(priv->prev_mac)); 786 } else 787 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); 788 789 return err; 790 } 791 792 static int mlx4_en_set_mac(struct net_device *dev, void *addr) 793 { 794 struct mlx4_en_priv *priv = netdev_priv(dev); 795 struct mlx4_en_dev *mdev = priv->mdev; 796 struct sockaddr *saddr = addr; 797 int err; 798 799 if (!is_valid_ether_addr(saddr->sa_data)) 800 return -EADDRNOTAVAIL; 801 802 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); 803 804 mutex_lock(&mdev->state_lock); 805 err = mlx4_en_do_set_mac(priv); 806 mutex_unlock(&mdev->state_lock); 807 808 return err; 809 } 810 811 static void mlx4_en_clear_list(struct net_device *dev) 812 { 813 struct mlx4_en_priv *priv = netdev_priv(dev); 814 struct mlx4_en_mc_list *tmp, *mc_to_del; 815 816 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { 817 list_del(&mc_to_del->list); 818 kfree(mc_to_del); 819 } 820 } 821 822 static void mlx4_en_cache_mclist(struct net_device *dev) 823 { 824 struct mlx4_en_priv *priv = netdev_priv(dev); 825 struct netdev_hw_addr *ha; 826 struct mlx4_en_mc_list *tmp; 827 828 mlx4_en_clear_list(dev); 829 netdev_for_each_mc_addr(ha, dev) { 830 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); 831 if (!tmp) { 832 mlx4_en_clear_list(dev); 833 return; 834 } 835 memcpy(tmp->addr, ha->addr, ETH_ALEN); 836 list_add_tail(&tmp->list, &priv->mc_list); 837 } 838 } 839 840 static void update_mclist_flags(struct mlx4_en_priv *priv, 841 struct list_head *dst, 842 struct list_head *src) 843 { 844 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; 845 bool found; 846 847 /* Find all the entries that should be removed from dst, 848 * These are the entries that are not found in src 849 */ 850 list_for_each_entry(dst_tmp, dst, list) { 851 found = false; 852 list_for_each_entry(src_tmp, src, list) { 853 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 854 found = true; 855 break; 856 } 857 } 858 if (!found) 859 dst_tmp->action = MCLIST_REM; 860 } 861 862 /* Add entries that exist in src but not in dst 863 * mark them as need to add 864 */ 865 list_for_each_entry(src_tmp, src, list) { 866 found = false; 867 list_for_each_entry(dst_tmp, dst, list) { 868 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 869 dst_tmp->action = MCLIST_NONE; 870 found = true; 871 break; 872 } 873 } 874 if (!found) { 875 new_mc = kmemdup(src_tmp, 876 sizeof(struct mlx4_en_mc_list), 877 GFP_KERNEL); 878 if (!new_mc) 879 return; 880 881 new_mc->action = MCLIST_ADD; 882 list_add_tail(&new_mc->list, dst); 883 } 884 } 885 } 886 887 static void mlx4_en_set_rx_mode(struct net_device *dev) 888 { 889 struct mlx4_en_priv *priv = netdev_priv(dev); 890 891 if (!priv->port_up) 892 return; 893 894 queue_work(priv->mdev->workqueue, &priv->rx_mode_task); 895 } 896 897 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, 898 struct mlx4_en_dev *mdev) 899 { 900 int err = 0; 901 902 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { 903 if (netif_msg_rx_status(priv)) 904 en_warn(priv, "Entering promiscuous mode\n"); 905 priv->flags |= MLX4_EN_FLAG_PROMISC; 906 907 /* Enable promiscouos mode */ 908 switch (mdev->dev->caps.steering_mode) { 909 case MLX4_STEERING_MODE_DEVICE_MANAGED: 910 err = mlx4_flow_steer_promisc_add(mdev->dev, 911 priv->port, 912 priv->base_qpn, 913 MLX4_FS_ALL_DEFAULT); 914 if (err) 915 en_err(priv, "Failed enabling promiscuous mode\n"); 916 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 917 break; 918 919 case MLX4_STEERING_MODE_B0: 920 err = mlx4_unicast_promisc_add(mdev->dev, 921 priv->base_qpn, 922 priv->port); 923 if (err) 924 en_err(priv, "Failed enabling unicast promiscuous mode\n"); 925 926 /* Add the default qp number as multicast 927 * promisc 928 */ 929 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 930 err = mlx4_multicast_promisc_add(mdev->dev, 931 priv->base_qpn, 932 priv->port); 933 if (err) 934 en_err(priv, "Failed enabling multicast promiscuous mode\n"); 935 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 936 } 937 break; 938 939 case MLX4_STEERING_MODE_A0: 940 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 941 priv->port, 942 priv->base_qpn, 943 1); 944 if (err) 945 en_err(priv, "Failed enabling promiscuous mode\n"); 946 break; 947 } 948 949 /* Disable port multicast filter (unconditionally) */ 950 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 951 0, MLX4_MCAST_DISABLE); 952 if (err) 953 en_err(priv, "Failed disabling multicast filter\n"); 954 955 /* Disable port VLAN filter */ 956 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 957 if (err) 958 en_err(priv, "Failed disabling VLAN filter\n"); 959 } 960 } 961 962 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv, 963 struct mlx4_en_dev *mdev) 964 { 965 int err = 0; 966 967 if (netif_msg_rx_status(priv)) 968 en_warn(priv, "Leaving promiscuous mode\n"); 969 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 970 971 /* Disable promiscouos mode */ 972 switch (mdev->dev->caps.steering_mode) { 973 case MLX4_STEERING_MODE_DEVICE_MANAGED: 974 err = mlx4_flow_steer_promisc_remove(mdev->dev, 975 priv->port, 976 MLX4_FS_ALL_DEFAULT); 977 if (err) 978 en_err(priv, "Failed disabling promiscuous mode\n"); 979 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 980 break; 981 982 case MLX4_STEERING_MODE_B0: 983 err = mlx4_unicast_promisc_remove(mdev->dev, 984 priv->base_qpn, 985 priv->port); 986 if (err) 987 en_err(priv, "Failed disabling unicast promiscuous mode\n"); 988 /* Disable Multicast promisc */ 989 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 990 err = mlx4_multicast_promisc_remove(mdev->dev, 991 priv->base_qpn, 992 priv->port); 993 if (err) 994 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 995 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 996 } 997 break; 998 999 case MLX4_STEERING_MODE_A0: 1000 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 1001 priv->port, 1002 priv->base_qpn, 0); 1003 if (err) 1004 en_err(priv, "Failed disabling promiscuous mode\n"); 1005 break; 1006 } 1007 1008 /* Enable port VLAN filter */ 1009 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 1010 if (err) 1011 en_err(priv, "Failed enabling VLAN filter\n"); 1012 } 1013 1014 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, 1015 struct net_device *dev, 1016 struct mlx4_en_dev *mdev) 1017 { 1018 struct mlx4_en_mc_list *mclist, *tmp; 1019 u64 mcast_addr = 0; 1020 u8 mc_list[16] = {0}; 1021 int err = 0; 1022 1023 /* Enable/disable the multicast filter according to IFF_ALLMULTI */ 1024 if (dev->flags & IFF_ALLMULTI) { 1025 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1026 0, MLX4_MCAST_DISABLE); 1027 if (err) 1028 en_err(priv, "Failed disabling multicast filter\n"); 1029 1030 /* Add the default qp number as multicast promisc */ 1031 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 1032 switch (mdev->dev->caps.steering_mode) { 1033 case MLX4_STEERING_MODE_DEVICE_MANAGED: 1034 err = mlx4_flow_steer_promisc_add(mdev->dev, 1035 priv->port, 1036 priv->base_qpn, 1037 MLX4_FS_MC_DEFAULT); 1038 break; 1039 1040 case MLX4_STEERING_MODE_B0: 1041 err = mlx4_multicast_promisc_add(mdev->dev, 1042 priv->base_qpn, 1043 priv->port); 1044 break; 1045 1046 case MLX4_STEERING_MODE_A0: 1047 break; 1048 } 1049 if (err) 1050 en_err(priv, "Failed entering multicast promisc mode\n"); 1051 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 1052 } 1053 } else { 1054 /* Disable Multicast promisc */ 1055 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1056 switch (mdev->dev->caps.steering_mode) { 1057 case MLX4_STEERING_MODE_DEVICE_MANAGED: 1058 err = mlx4_flow_steer_promisc_remove(mdev->dev, 1059 priv->port, 1060 MLX4_FS_MC_DEFAULT); 1061 break; 1062 1063 case MLX4_STEERING_MODE_B0: 1064 err = mlx4_multicast_promisc_remove(mdev->dev, 1065 priv->base_qpn, 1066 priv->port); 1067 break; 1068 1069 case MLX4_STEERING_MODE_A0: 1070 break; 1071 } 1072 if (err) 1073 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 1074 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1075 } 1076 1077 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1078 0, MLX4_MCAST_DISABLE); 1079 if (err) 1080 en_err(priv, "Failed disabling multicast filter\n"); 1081 1082 /* Flush mcast filter and init it with broadcast address */ 1083 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, 1084 1, MLX4_MCAST_CONFIG); 1085 1086 /* Update multicast list - we cache all addresses so they won't 1087 * change while HW is updated holding the command semaphor */ 1088 netif_addr_lock_bh(dev); 1089 mlx4_en_cache_mclist(dev); 1090 netif_addr_unlock_bh(dev); 1091 list_for_each_entry(mclist, &priv->mc_list, list) { 1092 mcast_addr = mlx4_en_mac_to_u64(mclist->addr); 1093 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 1094 mcast_addr, 0, MLX4_MCAST_CONFIG); 1095 } 1096 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1097 0, MLX4_MCAST_ENABLE); 1098 if (err) 1099 en_err(priv, "Failed enabling multicast filter\n"); 1100 1101 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); 1102 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1103 if (mclist->action == MCLIST_REM) { 1104 /* detach this address and delete from list */ 1105 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1106 mc_list[5] = priv->port; 1107 err = mlx4_multicast_detach(mdev->dev, 1108 &priv->rss_map.indir_qp, 1109 mc_list, 1110 MLX4_PROT_ETH, 1111 mclist->reg_id); 1112 if (err) 1113 en_err(priv, "Fail to detach multicast address\n"); 1114 1115 if (mclist->tunnel_reg_id) { 1116 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id); 1117 if (err) 1118 en_err(priv, "Failed to detach multicast address\n"); 1119 } 1120 1121 /* remove from list */ 1122 list_del(&mclist->list); 1123 kfree(mclist); 1124 } else if (mclist->action == MCLIST_ADD) { 1125 /* attach the address */ 1126 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1127 /* needed for B0 steering support */ 1128 mc_list[5] = priv->port; 1129 err = mlx4_multicast_attach(mdev->dev, 1130 &priv->rss_map.indir_qp, 1131 mc_list, 1132 priv->port, 0, 1133 MLX4_PROT_ETH, 1134 &mclist->reg_id); 1135 if (err) 1136 en_err(priv, "Fail to attach multicast address\n"); 1137 1138 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn, 1139 &mclist->tunnel_reg_id); 1140 if (err) 1141 en_err(priv, "Failed to attach multicast address\n"); 1142 } 1143 } 1144 } 1145 } 1146 1147 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, 1148 struct net_device *dev, 1149 struct mlx4_en_dev *mdev) 1150 { 1151 struct netdev_hw_addr *ha; 1152 struct mlx4_mac_entry *entry; 1153 struct hlist_node *tmp; 1154 bool found; 1155 u64 mac; 1156 int err = 0; 1157 struct hlist_head *bucket; 1158 unsigned int i; 1159 int removed = 0; 1160 u32 prev_flags; 1161 1162 /* Note that we do not need to protect our mac_hash traversal with rcu, 1163 * since all modification code is protected by mdev->state_lock 1164 */ 1165 1166 /* find what to remove */ 1167 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1168 bucket = &priv->mac_hash[i]; 1169 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1170 found = false; 1171 netdev_for_each_uc_addr(ha, dev) { 1172 if (ether_addr_equal_64bits(entry->mac, 1173 ha->addr)) { 1174 found = true; 1175 break; 1176 } 1177 } 1178 1179 /* MAC address of the port is not in uc list */ 1180 if (ether_addr_equal_64bits(entry->mac, dev->dev_addr)) 1181 found = true; 1182 1183 if (!found) { 1184 mac = mlx4_en_mac_to_u64(entry->mac); 1185 mlx4_en_uc_steer_release(priv, entry->mac, 1186 priv->base_qpn, 1187 entry->reg_id); 1188 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1189 1190 hlist_del_rcu(&entry->hlist); 1191 kfree_rcu(entry, rcu); 1192 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", 1193 entry->mac, priv->port); 1194 ++removed; 1195 } 1196 } 1197 } 1198 1199 /* if we didn't remove anything, there is no use in trying to add 1200 * again once we are in a forced promisc mode state 1201 */ 1202 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) 1203 return; 1204 1205 prev_flags = priv->flags; 1206 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 1207 1208 /* find what to add */ 1209 netdev_for_each_uc_addr(ha, dev) { 1210 found = false; 1211 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; 1212 hlist_for_each_entry(entry, bucket, hlist) { 1213 if (ether_addr_equal_64bits(entry->mac, ha->addr)) { 1214 found = true; 1215 break; 1216 } 1217 } 1218 1219 if (!found) { 1220 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1221 if (!entry) { 1222 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", 1223 ha->addr, priv->port); 1224 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1225 break; 1226 } 1227 mac = mlx4_en_mac_to_u64(ha->addr); 1228 memcpy(entry->mac, ha->addr, ETH_ALEN); 1229 err = mlx4_register_mac(mdev->dev, priv->port, mac); 1230 if (err < 0) { 1231 en_err(priv, "Failed registering MAC %pM on port %d: %d\n", 1232 ha->addr, priv->port, err); 1233 kfree(entry); 1234 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1235 break; 1236 } 1237 err = mlx4_en_uc_steer_add(priv, ha->addr, 1238 &priv->base_qpn, 1239 &entry->reg_id); 1240 if (err) { 1241 en_err(priv, "Failed adding MAC %pM on port %d: %d\n", 1242 ha->addr, priv->port, err); 1243 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1244 kfree(entry); 1245 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1246 break; 1247 } else { 1248 unsigned int mac_hash; 1249 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", 1250 ha->addr, priv->port); 1251 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; 1252 bucket = &priv->mac_hash[mac_hash]; 1253 hlist_add_head_rcu(&entry->hlist, bucket); 1254 } 1255 } 1256 } 1257 1258 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1259 en_warn(priv, "Forcing promiscuous mode on port:%d\n", 1260 priv->port); 1261 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1262 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", 1263 priv->port); 1264 } 1265 } 1266 1267 static void mlx4_en_do_set_rx_mode(struct work_struct *work) 1268 { 1269 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1270 rx_mode_task); 1271 struct mlx4_en_dev *mdev = priv->mdev; 1272 struct net_device *dev = priv->dev; 1273 1274 mutex_lock(&mdev->state_lock); 1275 if (!mdev->device_up) { 1276 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); 1277 goto out; 1278 } 1279 if (!priv->port_up) { 1280 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); 1281 goto out; 1282 } 1283 1284 if (!netif_carrier_ok(dev)) { 1285 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { 1286 if (priv->port_state.link_state) { 1287 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; 1288 netif_carrier_on(dev); 1289 en_dbg(LINK, priv, "Link Up\n"); 1290 } 1291 } 1292 } 1293 1294 if (dev->priv_flags & IFF_UNICAST_FLT) 1295 mlx4_en_do_uc_filter(priv, dev, mdev); 1296 1297 /* Promsicuous mode: disable all filters */ 1298 if ((dev->flags & IFF_PROMISC) || 1299 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { 1300 mlx4_en_set_promisc_mode(priv, mdev); 1301 goto out; 1302 } 1303 1304 /* Not in promiscuous mode */ 1305 if (priv->flags & MLX4_EN_FLAG_PROMISC) 1306 mlx4_en_clear_promisc_mode(priv, mdev); 1307 1308 mlx4_en_do_multicast(priv, dev, mdev); 1309 out: 1310 mutex_unlock(&mdev->state_lock); 1311 } 1312 1313 #ifdef CONFIG_NET_POLL_CONTROLLER 1314 static void mlx4_en_netpoll(struct net_device *dev) 1315 { 1316 struct mlx4_en_priv *priv = netdev_priv(dev); 1317 struct mlx4_en_cq *cq; 1318 unsigned long flags; 1319 int i; 1320 1321 for (i = 0; i < priv->rx_ring_num; i++) { 1322 cq = priv->rx_cq[i]; 1323 spin_lock_irqsave(&cq->lock, flags); 1324 napi_synchronize(&cq->napi); 1325 mlx4_en_process_rx_cq(dev, cq, 0); 1326 spin_unlock_irqrestore(&cq->lock, flags); 1327 } 1328 } 1329 #endif 1330 1331 static void mlx4_en_tx_timeout(struct net_device *dev) 1332 { 1333 struct mlx4_en_priv *priv = netdev_priv(dev); 1334 struct mlx4_en_dev *mdev = priv->mdev; 1335 int i; 1336 1337 if (netif_msg_timer(priv)) 1338 en_warn(priv, "Tx timeout called on port:%d\n", priv->port); 1339 1340 for (i = 0; i < priv->tx_ring_num; i++) { 1341 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) 1342 continue; 1343 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", 1344 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn, 1345 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod); 1346 } 1347 1348 priv->port_stats.tx_timeout++; 1349 en_dbg(DRV, priv, "Scheduling watchdog\n"); 1350 queue_work(mdev->workqueue, &priv->watchdog_task); 1351 } 1352 1353 1354 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev) 1355 { 1356 struct mlx4_en_priv *priv = netdev_priv(dev); 1357 1358 spin_lock_bh(&priv->stats_lock); 1359 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats)); 1360 spin_unlock_bh(&priv->stats_lock); 1361 1362 return &priv->ret_stats; 1363 } 1364 1365 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1366 { 1367 struct mlx4_en_cq *cq; 1368 int i; 1369 1370 /* If we haven't received a specific coalescing setting 1371 * (module param), we set the moderation parameters as follows: 1372 * - moder_cnt is set to the number of mtu sized packets to 1373 * satisfy our coalescing target. 1374 * - moder_time is set to a fixed value. 1375 */ 1376 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1377 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1378 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1379 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1380 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1381 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1382 1383 /* Setup cq moderation params */ 1384 for (i = 0; i < priv->rx_ring_num; i++) { 1385 cq = priv->rx_cq[i]; 1386 cq->moder_cnt = priv->rx_frames; 1387 cq->moder_time = priv->rx_usecs; 1388 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1389 priv->last_moder_packets[i] = 0; 1390 priv->last_moder_bytes[i] = 0; 1391 } 1392 1393 for (i = 0; i < priv->tx_ring_num; i++) { 1394 cq = priv->tx_cq[i]; 1395 cq->moder_cnt = priv->tx_frames; 1396 cq->moder_time = priv->tx_usecs; 1397 } 1398 1399 /* Reset auto-moderation params */ 1400 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1401 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1402 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1403 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1404 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1405 priv->adaptive_rx_coal = 1; 1406 priv->last_moder_jiffies = 0; 1407 priv->last_moder_tx_packets = 0; 1408 } 1409 1410 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1411 { 1412 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1413 struct mlx4_en_cq *cq; 1414 unsigned long packets; 1415 unsigned long rate; 1416 unsigned long avg_pkt_size; 1417 unsigned long rx_packets; 1418 unsigned long rx_bytes; 1419 unsigned long rx_pkt_diff; 1420 int moder_time; 1421 int ring, err; 1422 1423 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1424 return; 1425 1426 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1427 spin_lock_bh(&priv->stats_lock); 1428 rx_packets = priv->rx_ring[ring]->packets; 1429 rx_bytes = priv->rx_ring[ring]->bytes; 1430 spin_unlock_bh(&priv->stats_lock); 1431 1432 rx_pkt_diff = ((unsigned long) (rx_packets - 1433 priv->last_moder_packets[ring])); 1434 packets = rx_pkt_diff; 1435 rate = packets * HZ / period; 1436 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1437 priv->last_moder_bytes[ring])) / packets : 0; 1438 1439 /* Apply auto-moderation only when packet rate 1440 * exceeds a rate that it matters */ 1441 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1442 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1443 if (rate < priv->pkt_rate_low) 1444 moder_time = priv->rx_usecs_low; 1445 else if (rate > priv->pkt_rate_high) 1446 moder_time = priv->rx_usecs_high; 1447 else 1448 moder_time = (rate - priv->pkt_rate_low) * 1449 (priv->rx_usecs_high - priv->rx_usecs_low) / 1450 (priv->pkt_rate_high - priv->pkt_rate_low) + 1451 priv->rx_usecs_low; 1452 } else { 1453 moder_time = priv->rx_usecs_low; 1454 } 1455 1456 if (moder_time != priv->last_moder_time[ring]) { 1457 priv->last_moder_time[ring] = moder_time; 1458 cq = priv->rx_cq[ring]; 1459 cq->moder_time = moder_time; 1460 cq->moder_cnt = priv->rx_frames; 1461 err = mlx4_en_set_cq_moder(priv, cq); 1462 if (err) 1463 en_err(priv, "Failed modifying moderation for cq:%d\n", 1464 ring); 1465 } 1466 priv->last_moder_packets[ring] = rx_packets; 1467 priv->last_moder_bytes[ring] = rx_bytes; 1468 } 1469 1470 priv->last_moder_jiffies = jiffies; 1471 } 1472 1473 static void mlx4_en_do_get_stats(struct work_struct *work) 1474 { 1475 struct delayed_work *delay = to_delayed_work(work); 1476 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1477 stats_task); 1478 struct mlx4_en_dev *mdev = priv->mdev; 1479 int err; 1480 1481 mutex_lock(&mdev->state_lock); 1482 if (mdev->device_up) { 1483 if (priv->port_up) { 1484 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1485 if (err) 1486 en_dbg(HW, priv, "Could not update stats\n"); 1487 1488 mlx4_en_auto_moderation(priv); 1489 } 1490 1491 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1492 } 1493 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1494 mlx4_en_do_set_mac(priv); 1495 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1496 } 1497 mutex_unlock(&mdev->state_lock); 1498 } 1499 1500 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1501 * periodically 1502 */ 1503 static void mlx4_en_service_task(struct work_struct *work) 1504 { 1505 struct delayed_work *delay = to_delayed_work(work); 1506 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1507 service_task); 1508 struct mlx4_en_dev *mdev = priv->mdev; 1509 1510 mutex_lock(&mdev->state_lock); 1511 if (mdev->device_up) { 1512 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1513 mlx4_en_ptp_overflow_check(mdev); 1514 1515 queue_delayed_work(mdev->workqueue, &priv->service_task, 1516 SERVICE_TASK_DELAY); 1517 } 1518 mutex_unlock(&mdev->state_lock); 1519 } 1520 1521 static void mlx4_en_linkstate(struct work_struct *work) 1522 { 1523 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1524 linkstate_task); 1525 struct mlx4_en_dev *mdev = priv->mdev; 1526 int linkstate = priv->link_state; 1527 1528 mutex_lock(&mdev->state_lock); 1529 /* If observable port state changed set carrier state and 1530 * report to system log */ 1531 if (priv->last_link_state != linkstate) { 1532 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1533 en_info(priv, "Link Down\n"); 1534 netif_carrier_off(priv->dev); 1535 } else { 1536 en_info(priv, "Link Up\n"); 1537 netif_carrier_on(priv->dev); 1538 } 1539 } 1540 priv->last_link_state = linkstate; 1541 mutex_unlock(&mdev->state_lock); 1542 } 1543 1544 1545 int mlx4_en_start_port(struct net_device *dev) 1546 { 1547 struct mlx4_en_priv *priv = netdev_priv(dev); 1548 struct mlx4_en_dev *mdev = priv->mdev; 1549 struct mlx4_en_cq *cq; 1550 struct mlx4_en_tx_ring *tx_ring; 1551 int rx_index = 0; 1552 int tx_index = 0; 1553 int err = 0; 1554 int i; 1555 int j; 1556 u8 mc_list[16] = {0}; 1557 1558 if (priv->port_up) { 1559 en_dbg(DRV, priv, "start port called while port already up\n"); 1560 return 0; 1561 } 1562 1563 INIT_LIST_HEAD(&priv->mc_list); 1564 INIT_LIST_HEAD(&priv->curr_list); 1565 INIT_LIST_HEAD(&priv->ethtool_list); 1566 memset(&priv->ethtool_rules[0], 0, 1567 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1568 1569 /* Calculate Rx buf size */ 1570 dev->mtu = min(dev->mtu, priv->max_mtu); 1571 mlx4_en_calc_rx_buf(dev); 1572 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1573 1574 /* Configure rx cq's and rings */ 1575 err = mlx4_en_activate_rx_rings(priv); 1576 if (err) { 1577 en_err(priv, "Failed to activate RX rings\n"); 1578 return err; 1579 } 1580 for (i = 0; i < priv->rx_ring_num; i++) { 1581 cq = priv->rx_cq[i]; 1582 1583 mlx4_en_cq_init_lock(cq); 1584 1585 err = mlx4_en_activate_cq(priv, cq, i); 1586 if (err) { 1587 en_err(priv, "Failed activating Rx CQ\n"); 1588 goto cq_err; 1589 } 1590 for (j = 0; j < cq->size; j++) 1591 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1592 err = mlx4_en_set_cq_moder(priv, cq); 1593 if (err) { 1594 en_err(priv, "Failed setting cq moderation parameters"); 1595 mlx4_en_deactivate_cq(priv, cq); 1596 goto cq_err; 1597 } 1598 mlx4_en_arm_cq(priv, cq); 1599 priv->rx_ring[i]->cqn = cq->mcq.cqn; 1600 ++rx_index; 1601 } 1602 1603 /* Set qp number */ 1604 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1605 err = mlx4_en_get_qp(priv); 1606 if (err) { 1607 en_err(priv, "Failed getting eth qp\n"); 1608 goto cq_err; 1609 } 1610 mdev->mac_removed[priv->port] = 0; 1611 1612 err = mlx4_en_config_rss_steer(priv); 1613 if (err) { 1614 en_err(priv, "Failed configuring rss steering\n"); 1615 goto mac_err; 1616 } 1617 1618 err = mlx4_en_create_drop_qp(priv); 1619 if (err) 1620 goto rss_err; 1621 1622 /* Configure tx cq's and rings */ 1623 for (i = 0; i < priv->tx_ring_num; i++) { 1624 /* Configure cq */ 1625 cq = priv->tx_cq[i]; 1626 err = mlx4_en_activate_cq(priv, cq, i); 1627 if (err) { 1628 en_err(priv, "Failed allocating Tx CQ\n"); 1629 goto tx_err; 1630 } 1631 err = mlx4_en_set_cq_moder(priv, cq); 1632 if (err) { 1633 en_err(priv, "Failed setting cq moderation parameters"); 1634 mlx4_en_deactivate_cq(priv, cq); 1635 goto tx_err; 1636 } 1637 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i); 1638 cq->buf->wqe_index = cpu_to_be16(0xffff); 1639 1640 /* Configure ring */ 1641 tx_ring = priv->tx_ring[i]; 1642 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, 1643 i / priv->num_tx_rings_p_up); 1644 if (err) { 1645 en_err(priv, "Failed allocating Tx ring\n"); 1646 mlx4_en_deactivate_cq(priv, cq); 1647 goto tx_err; 1648 } 1649 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1650 1651 /* Arm CQ for TX completions */ 1652 mlx4_en_arm_cq(priv, cq); 1653 1654 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1655 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1656 *((u32 *) (tx_ring->buf + j)) = 0xffffffff; 1657 ++tx_index; 1658 } 1659 1660 /* Configure port */ 1661 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1662 priv->rx_skb_size + ETH_FCS_LEN, 1663 priv->prof->tx_pause, 1664 priv->prof->tx_ppp, 1665 priv->prof->rx_pause, 1666 priv->prof->rx_ppp); 1667 if (err) { 1668 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1669 priv->port, err); 1670 goto tx_err; 1671 } 1672 /* Set default qp number */ 1673 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1674 if (err) { 1675 en_err(priv, "Failed setting default qp numbers\n"); 1676 goto tx_err; 1677 } 1678 1679 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 1680 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC); 1681 if (err) { 1682 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 1683 err); 1684 goto tx_err; 1685 } 1686 } 1687 1688 /* Init port */ 1689 en_dbg(HW, priv, "Initializing port\n"); 1690 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1691 if (err) { 1692 en_err(priv, "Failed Initializing port\n"); 1693 goto tx_err; 1694 } 1695 1696 /* Attach rx QP to bradcast address */ 1697 memset(&mc_list[10], 0xff, ETH_ALEN); 1698 mc_list[5] = priv->port; /* needed for B0 steering support */ 1699 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1700 priv->port, 0, MLX4_PROT_ETH, 1701 &priv->broadcast_id)) 1702 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1703 1704 /* Must redo promiscuous mode setup. */ 1705 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1706 1707 /* Schedule multicast task to populate multicast list */ 1708 queue_work(mdev->workqueue, &priv->rx_mode_task); 1709 1710 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap); 1711 1712 priv->port_up = true; 1713 netif_tx_start_all_queues(dev); 1714 netif_device_attach(dev); 1715 1716 return 0; 1717 1718 tx_err: 1719 while (tx_index--) { 1720 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]); 1721 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]); 1722 } 1723 mlx4_en_destroy_drop_qp(priv); 1724 rss_err: 1725 mlx4_en_release_rss_steer(priv); 1726 mac_err: 1727 mlx4_en_put_qp(priv); 1728 cq_err: 1729 while (rx_index--) 1730 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); 1731 for (i = 0; i < priv->rx_ring_num; i++) 1732 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1733 1734 return err; /* need to close devices */ 1735 } 1736 1737 1738 void mlx4_en_stop_port(struct net_device *dev, int detach) 1739 { 1740 struct mlx4_en_priv *priv = netdev_priv(dev); 1741 struct mlx4_en_dev *mdev = priv->mdev; 1742 struct mlx4_en_mc_list *mclist, *tmp; 1743 struct ethtool_flow_id *flow, *tmp_flow; 1744 int i; 1745 u8 mc_list[16] = {0}; 1746 1747 if (!priv->port_up) { 1748 en_dbg(DRV, priv, "stop port called while port already down\n"); 1749 return; 1750 } 1751 1752 /* close port*/ 1753 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1754 1755 /* Synchronize with tx routine */ 1756 netif_tx_lock_bh(dev); 1757 if (detach) 1758 netif_device_detach(dev); 1759 netif_tx_stop_all_queues(dev); 1760 netif_tx_unlock_bh(dev); 1761 1762 netif_tx_disable(dev); 1763 1764 /* Set port as not active */ 1765 priv->port_up = false; 1766 1767 /* Promsicuous mode */ 1768 if (mdev->dev->caps.steering_mode == 1769 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1770 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | 1771 MLX4_EN_FLAG_MC_PROMISC); 1772 mlx4_flow_steer_promisc_remove(mdev->dev, 1773 priv->port, 1774 MLX4_FS_ALL_DEFAULT); 1775 mlx4_flow_steer_promisc_remove(mdev->dev, 1776 priv->port, 1777 MLX4_FS_MC_DEFAULT); 1778 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { 1779 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 1780 1781 /* Disable promiscouos mode */ 1782 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, 1783 priv->port); 1784 1785 /* Disable Multicast promisc */ 1786 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1787 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, 1788 priv->port); 1789 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1790 } 1791 } 1792 1793 /* Detach All multicasts */ 1794 memset(&mc_list[10], 0xff, ETH_ALEN); 1795 mc_list[5] = priv->port; /* needed for B0 steering support */ 1796 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1797 MLX4_PROT_ETH, priv->broadcast_id); 1798 list_for_each_entry(mclist, &priv->curr_list, list) { 1799 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1800 mc_list[5] = priv->port; 1801 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, 1802 mc_list, MLX4_PROT_ETH, mclist->reg_id); 1803 if (mclist->tunnel_reg_id) 1804 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id); 1805 } 1806 mlx4_en_clear_list(dev); 1807 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1808 list_del(&mclist->list); 1809 kfree(mclist); 1810 } 1811 1812 /* Flush multicast filter */ 1813 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); 1814 1815 /* Remove flow steering rules for the port*/ 1816 if (mdev->dev->caps.steering_mode == 1817 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1818 ASSERT_RTNL(); 1819 list_for_each_entry_safe(flow, tmp_flow, 1820 &priv->ethtool_list, list) { 1821 mlx4_flow_detach(mdev->dev, flow->id); 1822 list_del(&flow->list); 1823 } 1824 } 1825 1826 mlx4_en_destroy_drop_qp(priv); 1827 1828 /* Free TX Rings */ 1829 for (i = 0; i < priv->tx_ring_num; i++) { 1830 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]); 1831 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]); 1832 } 1833 msleep(10); 1834 1835 for (i = 0; i < priv->tx_ring_num; i++) 1836 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]); 1837 1838 /* Free RSS qps */ 1839 mlx4_en_release_rss_steer(priv); 1840 1841 /* Unregister Mac address for the port */ 1842 mlx4_en_put_qp(priv); 1843 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN)) 1844 mdev->mac_removed[priv->port] = 1; 1845 1846 /* Free RX Rings */ 1847 for (i = 0; i < priv->rx_ring_num; i++) { 1848 struct mlx4_en_cq *cq = priv->rx_cq[i]; 1849 1850 local_bh_disable(); 1851 while (!mlx4_en_cq_lock_napi(cq)) { 1852 pr_info("CQ %d locked\n", i); 1853 mdelay(1); 1854 } 1855 local_bh_enable(); 1856 1857 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state)) 1858 msleep(1); 1859 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1860 mlx4_en_deactivate_cq(priv, cq); 1861 } 1862 } 1863 1864 static void mlx4_en_restart(struct work_struct *work) 1865 { 1866 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1867 watchdog_task); 1868 struct mlx4_en_dev *mdev = priv->mdev; 1869 struct net_device *dev = priv->dev; 1870 1871 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1872 1873 mutex_lock(&mdev->state_lock); 1874 if (priv->port_up) { 1875 mlx4_en_stop_port(dev, 1); 1876 if (mlx4_en_start_port(dev)) 1877 en_err(priv, "Failed restarting port %d\n", priv->port); 1878 } 1879 mutex_unlock(&mdev->state_lock); 1880 } 1881 1882 static void mlx4_en_clear_stats(struct net_device *dev) 1883 { 1884 struct mlx4_en_priv *priv = netdev_priv(dev); 1885 struct mlx4_en_dev *mdev = priv->mdev; 1886 int i; 1887 1888 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1889 en_dbg(HW, priv, "Failed dumping statistics\n"); 1890 1891 memset(&priv->stats, 0, sizeof(priv->stats)); 1892 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1893 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1894 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1895 1896 for (i = 0; i < priv->tx_ring_num; i++) { 1897 priv->tx_ring[i]->bytes = 0; 1898 priv->tx_ring[i]->packets = 0; 1899 priv->tx_ring[i]->tx_csum = 0; 1900 } 1901 for (i = 0; i < priv->rx_ring_num; i++) { 1902 priv->rx_ring[i]->bytes = 0; 1903 priv->rx_ring[i]->packets = 0; 1904 priv->rx_ring[i]->csum_ok = 0; 1905 priv->rx_ring[i]->csum_none = 0; 1906 } 1907 } 1908 1909 static int mlx4_en_open(struct net_device *dev) 1910 { 1911 struct mlx4_en_priv *priv = netdev_priv(dev); 1912 struct mlx4_en_dev *mdev = priv->mdev; 1913 int err = 0; 1914 1915 mutex_lock(&mdev->state_lock); 1916 1917 if (!mdev->device_up) { 1918 en_err(priv, "Cannot open - device down/disabled\n"); 1919 err = -EBUSY; 1920 goto out; 1921 } 1922 1923 /* Reset HW statistics and SW counters */ 1924 mlx4_en_clear_stats(dev); 1925 1926 err = mlx4_en_start_port(dev); 1927 if (err) 1928 en_err(priv, "Failed starting port:%d\n", priv->port); 1929 1930 out: 1931 mutex_unlock(&mdev->state_lock); 1932 return err; 1933 } 1934 1935 1936 static int mlx4_en_close(struct net_device *dev) 1937 { 1938 struct mlx4_en_priv *priv = netdev_priv(dev); 1939 struct mlx4_en_dev *mdev = priv->mdev; 1940 1941 en_dbg(IFDOWN, priv, "Close port called\n"); 1942 1943 mutex_lock(&mdev->state_lock); 1944 1945 mlx4_en_stop_port(dev, 0); 1946 netif_carrier_off(dev); 1947 1948 mutex_unlock(&mdev->state_lock); 1949 return 0; 1950 } 1951 1952 void mlx4_en_free_resources(struct mlx4_en_priv *priv) 1953 { 1954 int i; 1955 1956 #ifdef CONFIG_RFS_ACCEL 1957 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap); 1958 priv->dev->rx_cpu_rmap = NULL; 1959 #endif 1960 1961 for (i = 0; i < priv->tx_ring_num; i++) { 1962 if (priv->tx_ring && priv->tx_ring[i]) 1963 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 1964 if (priv->tx_cq && priv->tx_cq[i]) 1965 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 1966 } 1967 1968 for (i = 0; i < priv->rx_ring_num; i++) { 1969 if (priv->rx_ring[i]) 1970 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 1971 priv->prof->rx_ring_size, priv->stride); 1972 if (priv->rx_cq[i]) 1973 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 1974 } 1975 1976 if (priv->base_tx_qpn) { 1977 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num); 1978 priv->base_tx_qpn = 0; 1979 } 1980 } 1981 1982 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 1983 { 1984 struct mlx4_en_port_profile *prof = priv->prof; 1985 int i; 1986 int err; 1987 int node; 1988 1989 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn); 1990 if (err) { 1991 en_err(priv, "failed reserving range for TX rings\n"); 1992 return err; 1993 } 1994 1995 /* Create tx Rings */ 1996 for (i = 0; i < priv->tx_ring_num; i++) { 1997 node = cpu_to_node(i % num_online_cpus()); 1998 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 1999 prof->tx_ring_size, i, TX, node)) 2000 goto err; 2001 2002 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], 2003 priv->base_tx_qpn + i, 2004 prof->tx_ring_size, TXBB_SIZE, 2005 node, i)) 2006 goto err; 2007 } 2008 2009 /* Create rx Rings */ 2010 for (i = 0; i < priv->rx_ring_num; i++) { 2011 node = cpu_to_node(i % num_online_cpus()); 2012 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 2013 prof->rx_ring_size, i, RX, node)) 2014 goto err; 2015 2016 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 2017 prof->rx_ring_size, priv->stride, 2018 node)) 2019 goto err; 2020 } 2021 2022 #ifdef CONFIG_RFS_ACCEL 2023 if (priv->mdev->dev->caps.comp_pool) { 2024 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool); 2025 if (!priv->dev->rx_cpu_rmap) 2026 goto err; 2027 } 2028 #endif 2029 2030 return 0; 2031 2032 err: 2033 en_err(priv, "Failed to allocate NIC resources\n"); 2034 for (i = 0; i < priv->rx_ring_num; i++) { 2035 if (priv->rx_ring[i]) 2036 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2037 prof->rx_ring_size, 2038 priv->stride); 2039 if (priv->rx_cq[i]) 2040 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2041 } 2042 for (i = 0; i < priv->tx_ring_num; i++) { 2043 if (priv->tx_ring[i]) 2044 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2045 if (priv->tx_cq[i]) 2046 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2047 } 2048 return -ENOMEM; 2049 } 2050 2051 2052 void mlx4_en_destroy_netdev(struct net_device *dev) 2053 { 2054 struct mlx4_en_priv *priv = netdev_priv(dev); 2055 struct mlx4_en_dev *mdev = priv->mdev; 2056 2057 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2058 2059 /* Unregister device - this will close the port if it was up */ 2060 if (priv->registered) 2061 unregister_netdev(dev); 2062 2063 if (priv->allocated) 2064 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2065 2066 cancel_delayed_work(&priv->stats_task); 2067 cancel_delayed_work(&priv->service_task); 2068 /* flush any pending task for this netdev */ 2069 flush_workqueue(mdev->workqueue); 2070 2071 /* Detach the netdev so tasks would not attempt to access it */ 2072 mutex_lock(&mdev->state_lock); 2073 mdev->pndev[priv->port] = NULL; 2074 mutex_unlock(&mdev->state_lock); 2075 2076 mlx4_en_free_resources(priv); 2077 2078 kfree(priv->tx_ring); 2079 kfree(priv->tx_cq); 2080 2081 free_netdev(dev); 2082 } 2083 2084 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2085 { 2086 struct mlx4_en_priv *priv = netdev_priv(dev); 2087 struct mlx4_en_dev *mdev = priv->mdev; 2088 int err = 0; 2089 2090 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2091 dev->mtu, new_mtu); 2092 2093 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 2094 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 2095 return -EPERM; 2096 } 2097 dev->mtu = new_mtu; 2098 2099 if (netif_running(dev)) { 2100 mutex_lock(&mdev->state_lock); 2101 if (!mdev->device_up) { 2102 /* NIC is probably restarting - let watchdog task reset 2103 * the port */ 2104 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2105 } else { 2106 mlx4_en_stop_port(dev, 1); 2107 err = mlx4_en_start_port(dev); 2108 if (err) { 2109 en_err(priv, "Failed restarting port:%d\n", 2110 priv->port); 2111 queue_work(mdev->workqueue, &priv->watchdog_task); 2112 } 2113 } 2114 mutex_unlock(&mdev->state_lock); 2115 } 2116 return 0; 2117 } 2118 2119 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2120 { 2121 struct mlx4_en_priv *priv = netdev_priv(dev); 2122 struct mlx4_en_dev *mdev = priv->mdev; 2123 struct hwtstamp_config config; 2124 2125 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2126 return -EFAULT; 2127 2128 /* reserved for future extensions */ 2129 if (config.flags) 2130 return -EINVAL; 2131 2132 /* device doesn't support time stamping */ 2133 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2134 return -EINVAL; 2135 2136 /* TX HW timestamp */ 2137 switch (config.tx_type) { 2138 case HWTSTAMP_TX_OFF: 2139 case HWTSTAMP_TX_ON: 2140 break; 2141 default: 2142 return -ERANGE; 2143 } 2144 2145 /* RX HW timestamp */ 2146 switch (config.rx_filter) { 2147 case HWTSTAMP_FILTER_NONE: 2148 break; 2149 case HWTSTAMP_FILTER_ALL: 2150 case HWTSTAMP_FILTER_SOME: 2151 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2152 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2153 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2154 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2155 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2156 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2157 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2158 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2159 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2160 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2161 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2162 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2163 config.rx_filter = HWTSTAMP_FILTER_ALL; 2164 break; 2165 default: 2166 return -ERANGE; 2167 } 2168 2169 if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) { 2170 config.tx_type = HWTSTAMP_TX_OFF; 2171 config.rx_filter = HWTSTAMP_FILTER_NONE; 2172 } 2173 2174 return copy_to_user(ifr->ifr_data, &config, 2175 sizeof(config)) ? -EFAULT : 0; 2176 } 2177 2178 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2179 { 2180 struct mlx4_en_priv *priv = netdev_priv(dev); 2181 2182 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2183 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2184 } 2185 2186 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2187 { 2188 switch (cmd) { 2189 case SIOCSHWTSTAMP: 2190 return mlx4_en_hwtstamp_set(dev, ifr); 2191 case SIOCGHWTSTAMP: 2192 return mlx4_en_hwtstamp_get(dev, ifr); 2193 default: 2194 return -EOPNOTSUPP; 2195 } 2196 } 2197 2198 static int mlx4_en_set_features(struct net_device *netdev, 2199 netdev_features_t features) 2200 { 2201 struct mlx4_en_priv *priv = netdev_priv(netdev); 2202 2203 if (features & NETIF_F_LOOPBACK) 2204 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK); 2205 else 2206 priv->ctrl_flags &= 2207 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK); 2208 2209 mlx4_en_update_loopback_state(netdev, features); 2210 2211 return 0; 2212 2213 } 2214 2215 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2216 { 2217 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2218 struct mlx4_en_dev *mdev = en_priv->mdev; 2219 u64 mac_u64 = mlx4_en_mac_to_u64(mac); 2220 2221 if (!is_valid_ether_addr(mac)) 2222 return -EINVAL; 2223 2224 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2225 } 2226 2227 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) 2228 { 2229 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2230 struct mlx4_en_dev *mdev = en_priv->mdev; 2231 2232 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos); 2233 } 2234 2235 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2236 { 2237 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2238 struct mlx4_en_dev *mdev = en_priv->mdev; 2239 2240 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2241 } 2242 2243 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2244 { 2245 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2246 struct mlx4_en_dev *mdev = en_priv->mdev; 2247 2248 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2249 } 2250 2251 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2252 { 2253 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2254 struct mlx4_en_dev *mdev = en_priv->mdev; 2255 2256 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2257 } 2258 2259 #define PORT_ID_BYTE_LEN 8 2260 static int mlx4_en_get_phys_port_id(struct net_device *dev, 2261 struct netdev_phys_port_id *ppid) 2262 { 2263 struct mlx4_en_priv *priv = netdev_priv(dev); 2264 struct mlx4_dev *mdev = priv->mdev->dev; 2265 int i; 2266 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2267 2268 if (!phys_port_id) 2269 return -EOPNOTSUPP; 2270 2271 ppid->id_len = sizeof(phys_port_id); 2272 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2273 ppid->id[i] = phys_port_id & 0xff; 2274 phys_port_id >>= 8; 2275 } 2276 return 0; 2277 } 2278 2279 static const struct net_device_ops mlx4_netdev_ops = { 2280 .ndo_open = mlx4_en_open, 2281 .ndo_stop = mlx4_en_close, 2282 .ndo_start_xmit = mlx4_en_xmit, 2283 .ndo_select_queue = mlx4_en_select_queue, 2284 .ndo_get_stats = mlx4_en_get_stats, 2285 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2286 .ndo_set_mac_address = mlx4_en_set_mac, 2287 .ndo_validate_addr = eth_validate_addr, 2288 .ndo_change_mtu = mlx4_en_change_mtu, 2289 .ndo_do_ioctl = mlx4_en_ioctl, 2290 .ndo_tx_timeout = mlx4_en_tx_timeout, 2291 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2292 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2293 #ifdef CONFIG_NET_POLL_CONTROLLER 2294 .ndo_poll_controller = mlx4_en_netpoll, 2295 #endif 2296 .ndo_set_features = mlx4_en_set_features, 2297 .ndo_setup_tc = mlx4_en_setup_tc, 2298 #ifdef CONFIG_RFS_ACCEL 2299 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2300 #endif 2301 #ifdef CONFIG_NET_RX_BUSY_POLL 2302 .ndo_busy_poll = mlx4_en_low_latency_recv, 2303 #endif 2304 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2305 }; 2306 2307 static const struct net_device_ops mlx4_netdev_ops_master = { 2308 .ndo_open = mlx4_en_open, 2309 .ndo_stop = mlx4_en_close, 2310 .ndo_start_xmit = mlx4_en_xmit, 2311 .ndo_select_queue = mlx4_en_select_queue, 2312 .ndo_get_stats = mlx4_en_get_stats, 2313 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2314 .ndo_set_mac_address = mlx4_en_set_mac, 2315 .ndo_validate_addr = eth_validate_addr, 2316 .ndo_change_mtu = mlx4_en_change_mtu, 2317 .ndo_tx_timeout = mlx4_en_tx_timeout, 2318 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2319 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2320 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2321 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2322 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2323 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2324 .ndo_get_vf_config = mlx4_en_get_vf_config, 2325 #ifdef CONFIG_NET_POLL_CONTROLLER 2326 .ndo_poll_controller = mlx4_en_netpoll, 2327 #endif 2328 .ndo_set_features = mlx4_en_set_features, 2329 .ndo_setup_tc = mlx4_en_setup_tc, 2330 #ifdef CONFIG_RFS_ACCEL 2331 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2332 #endif 2333 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2334 }; 2335 2336 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 2337 struct mlx4_en_port_profile *prof) 2338 { 2339 struct net_device *dev; 2340 struct mlx4_en_priv *priv; 2341 int i; 2342 int err; 2343 u64 mac_u64; 2344 2345 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 2346 MAX_TX_RINGS, MAX_RX_RINGS); 2347 if (dev == NULL) 2348 return -ENOMEM; 2349 2350 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 2351 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 2352 2353 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev); 2354 dev->dev_id = port - 1; 2355 2356 /* 2357 * Initialize driver private data 2358 */ 2359 2360 priv = netdev_priv(dev); 2361 memset(priv, 0, sizeof(struct mlx4_en_priv)); 2362 priv->dev = dev; 2363 priv->mdev = mdev; 2364 priv->ddev = &mdev->pdev->dev; 2365 priv->prof = prof; 2366 priv->port = port; 2367 priv->port_up = false; 2368 priv->flags = prof->flags; 2369 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 2370 MLX4_WQE_CTRL_SOLICITED); 2371 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 2372 priv->tx_ring_num = prof->tx_ring_num; 2373 2374 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 2375 GFP_KERNEL); 2376 if (!priv->tx_ring) { 2377 err = -ENOMEM; 2378 goto out; 2379 } 2380 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 2381 GFP_KERNEL); 2382 if (!priv->tx_cq) { 2383 err = -ENOMEM; 2384 goto out; 2385 } 2386 priv->rx_ring_num = prof->rx_ring_num; 2387 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 2388 priv->mac_index = -1; 2389 priv->msg_enable = MLX4_EN_MSG_LEVEL; 2390 spin_lock_init(&priv->stats_lock); 2391 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 2392 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 2393 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 2394 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 2395 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 2396 #ifdef CONFIG_MLX4_EN_DCB 2397 if (!mlx4_is_slave(priv->mdev->dev)) { 2398 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) { 2399 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 2400 } else { 2401 en_info(priv, "enabling only PFC DCB ops\n"); 2402 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 2403 } 2404 } 2405 #endif 2406 2407 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 2408 INIT_HLIST_HEAD(&priv->mac_hash[i]); 2409 2410 /* Query for default mac and max mtu */ 2411 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 2412 2413 /* Set default MAC */ 2414 dev->addr_len = ETH_ALEN; 2415 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 2416 if (!is_valid_ether_addr(dev->dev_addr)) { 2417 if (mlx4_is_slave(priv->mdev->dev)) { 2418 eth_hw_addr_random(dev); 2419 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 2420 mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr); 2421 mdev->dev->caps.def_mac[priv->port] = mac_u64; 2422 } else { 2423 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 2424 priv->port, dev->dev_addr); 2425 err = -EINVAL; 2426 goto out; 2427 } 2428 } 2429 2430 memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac)); 2431 2432 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2433 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2434 err = mlx4_en_alloc_resources(priv); 2435 if (err) 2436 goto out; 2437 2438 #ifdef CONFIG_RFS_ACCEL 2439 INIT_LIST_HEAD(&priv->filters); 2440 spin_lock_init(&priv->filters_lock); 2441 #endif 2442 2443 /* Initialize time stamping config */ 2444 priv->hwtstamp_config.flags = 0; 2445 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 2446 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 2447 2448 /* Allocate page for receive rings */ 2449 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 2450 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE); 2451 if (err) { 2452 en_err(priv, "Failed to allocate page for rx qps\n"); 2453 goto out; 2454 } 2455 priv->allocated = 1; 2456 2457 /* 2458 * Initialize netdev entry points 2459 */ 2460 if (mlx4_is_master(priv->mdev->dev)) 2461 dev->netdev_ops = &mlx4_netdev_ops_master; 2462 else 2463 dev->netdev_ops = &mlx4_netdev_ops; 2464 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 2465 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 2466 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 2467 2468 SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops); 2469 2470 /* 2471 * Set driver features 2472 */ 2473 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2474 if (mdev->LSO_support) 2475 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2476 2477 dev->vlan_features = dev->hw_features; 2478 2479 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 2480 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 2481 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 2482 NETIF_F_HW_VLAN_CTAG_FILTER; 2483 dev->hw_features |= NETIF_F_LOOPBACK; 2484 2485 if (mdev->dev->caps.steering_mode == 2486 MLX4_STEERING_MODE_DEVICE_MANAGED) 2487 dev->hw_features |= NETIF_F_NTUPLE; 2488 2489 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 2490 dev->priv_flags |= IFF_UNICAST_FLT; 2491 2492 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 2493 dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2494 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL; 2495 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; 2496 dev->features |= NETIF_F_GSO_UDP_TUNNEL; 2497 } 2498 2499 mdev->pndev[port] = dev; 2500 2501 netif_carrier_off(dev); 2502 mlx4_en_set_default_moderation(priv); 2503 2504 err = register_netdev(dev); 2505 if (err) { 2506 en_err(priv, "Netdev registration failed for port %d\n", port); 2507 goto out; 2508 } 2509 priv->registered = 1; 2510 2511 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 2512 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 2513 2514 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 2515 2516 /* Configure port */ 2517 mlx4_en_calc_rx_buf(dev); 2518 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 2519 priv->rx_skb_size + ETH_FCS_LEN, 2520 prof->tx_pause, prof->tx_ppp, 2521 prof->rx_pause, prof->rx_ppp); 2522 if (err) { 2523 en_err(priv, "Failed setting port general configurations " 2524 "for port %d, with error %d\n", priv->port, err); 2525 goto out; 2526 } 2527 2528 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 2529 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC); 2530 if (err) { 2531 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 2532 err); 2533 goto out; 2534 } 2535 } 2536 2537 /* Init port */ 2538 en_warn(priv, "Initializing port\n"); 2539 err = mlx4_INIT_PORT(mdev->dev, priv->port); 2540 if (err) { 2541 en_err(priv, "Failed Initializing port\n"); 2542 goto out; 2543 } 2544 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 2545 2546 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2547 queue_delayed_work(mdev->workqueue, &priv->service_task, 2548 SERVICE_TASK_DELAY); 2549 2550 return 0; 2551 2552 out: 2553 mlx4_en_destroy_netdev(dev); 2554 return err; 2555 } 2556 2557