1 /* 2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 * 32 */ 33 34 #include <linux/etherdevice.h> 35 #include <linux/tcp.h> 36 #include <linux/if_vlan.h> 37 #include <linux/delay.h> 38 #include <linux/slab.h> 39 #include <linux/hash.h> 40 #include <net/ip.h> 41 #include <net/busy_poll.h> 42 #include <net/vxlan.h> 43 44 #include <linux/mlx4/driver.h> 45 #include <linux/mlx4/device.h> 46 #include <linux/mlx4/cmd.h> 47 #include <linux/mlx4/cq.h> 48 49 #include "mlx4_en.h" 50 #include "en_port.h" 51 52 int mlx4_en_setup_tc(struct net_device *dev, u8 up) 53 { 54 struct mlx4_en_priv *priv = netdev_priv(dev); 55 int i; 56 unsigned int offset = 0; 57 58 if (up && up != MLX4_EN_NUM_UP) 59 return -EINVAL; 60 61 netdev_set_num_tc(dev, up); 62 63 /* Partition Tx queues evenly amongst UP's */ 64 for (i = 0; i < up; i++) { 65 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset); 66 offset += priv->num_tx_rings_p_up; 67 } 68 69 return 0; 70 } 71 72 #ifdef CONFIG_NET_RX_BUSY_POLL 73 /* must be called with local_bh_disable()d */ 74 static int mlx4_en_low_latency_recv(struct napi_struct *napi) 75 { 76 struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi); 77 struct net_device *dev = cq->dev; 78 struct mlx4_en_priv *priv = netdev_priv(dev); 79 struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring]; 80 int done; 81 82 if (!priv->port_up) 83 return LL_FLUSH_FAILED; 84 85 if (!mlx4_en_cq_lock_poll(cq)) 86 return LL_FLUSH_BUSY; 87 88 done = mlx4_en_process_rx_cq(dev, cq, 4); 89 if (likely(done)) 90 rx_ring->cleaned += done; 91 else 92 rx_ring->misses++; 93 94 mlx4_en_cq_unlock_poll(cq); 95 96 return done; 97 } 98 #endif /* CONFIG_NET_RX_BUSY_POLL */ 99 100 #ifdef CONFIG_RFS_ACCEL 101 102 struct mlx4_en_filter { 103 struct list_head next; 104 struct work_struct work; 105 106 u8 ip_proto; 107 __be32 src_ip; 108 __be32 dst_ip; 109 __be16 src_port; 110 __be16 dst_port; 111 112 int rxq_index; 113 struct mlx4_en_priv *priv; 114 u32 flow_id; /* RFS infrastructure id */ 115 int id; /* mlx4_en driver id */ 116 u64 reg_id; /* Flow steering API id */ 117 u8 activated; /* Used to prevent expiry before filter 118 * is attached 119 */ 120 struct hlist_node filter_chain; 121 }; 122 123 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv); 124 125 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto) 126 { 127 switch (ip_proto) { 128 case IPPROTO_UDP: 129 return MLX4_NET_TRANS_RULE_ID_UDP; 130 case IPPROTO_TCP: 131 return MLX4_NET_TRANS_RULE_ID_TCP; 132 default: 133 return MLX4_NET_TRANS_RULE_NUM; 134 } 135 }; 136 137 static void mlx4_en_filter_work(struct work_struct *work) 138 { 139 struct mlx4_en_filter *filter = container_of(work, 140 struct mlx4_en_filter, 141 work); 142 struct mlx4_en_priv *priv = filter->priv; 143 struct mlx4_spec_list spec_tcp_udp = { 144 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto), 145 { 146 .tcp_udp = { 147 .dst_port = filter->dst_port, 148 .dst_port_msk = (__force __be16)-1, 149 .src_port = filter->src_port, 150 .src_port_msk = (__force __be16)-1, 151 }, 152 }, 153 }; 154 struct mlx4_spec_list spec_ip = { 155 .id = MLX4_NET_TRANS_RULE_ID_IPV4, 156 { 157 .ipv4 = { 158 .dst_ip = filter->dst_ip, 159 .dst_ip_msk = (__force __be32)-1, 160 .src_ip = filter->src_ip, 161 .src_ip_msk = (__force __be32)-1, 162 }, 163 }, 164 }; 165 struct mlx4_spec_list spec_eth = { 166 .id = MLX4_NET_TRANS_RULE_ID_ETH, 167 }; 168 struct mlx4_net_trans_rule rule = { 169 .list = LIST_HEAD_INIT(rule.list), 170 .queue_mode = MLX4_NET_TRANS_Q_LIFO, 171 .exclusive = 1, 172 .allow_loopback = 1, 173 .promisc_mode = MLX4_FS_REGULAR, 174 .port = priv->port, 175 .priority = MLX4_DOMAIN_RFS, 176 }; 177 int rc; 178 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 179 180 if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) { 181 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n", 182 filter->ip_proto); 183 goto ignore; 184 } 185 list_add_tail(&spec_eth.list, &rule.list); 186 list_add_tail(&spec_ip.list, &rule.list); 187 list_add_tail(&spec_tcp_udp.list, &rule.list); 188 189 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn; 190 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN); 191 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 192 193 filter->activated = 0; 194 195 if (filter->reg_id) { 196 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 197 if (rc && rc != -ENOENT) 198 en_err(priv, "Error detaching flow. rc = %d\n", rc); 199 } 200 201 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id); 202 if (rc) 203 en_err(priv, "Error attaching flow. err = %d\n", rc); 204 205 ignore: 206 mlx4_en_filter_rfs_expire(priv); 207 208 filter->activated = 1; 209 } 210 211 static inline struct hlist_head * 212 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 213 __be16 src_port, __be16 dst_port) 214 { 215 unsigned long l; 216 int bucket_idx; 217 218 l = (__force unsigned long)src_port | 219 ((__force unsigned long)dst_port << 2); 220 l ^= (__force unsigned long)(src_ip ^ dst_ip); 221 222 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT); 223 224 return &priv->filter_hash[bucket_idx]; 225 } 226 227 static struct mlx4_en_filter * 228 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip, 229 __be32 dst_ip, u8 ip_proto, __be16 src_port, 230 __be16 dst_port, u32 flow_id) 231 { 232 struct mlx4_en_filter *filter = NULL; 233 234 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC); 235 if (!filter) 236 return NULL; 237 238 filter->priv = priv; 239 filter->rxq_index = rxq_index; 240 INIT_WORK(&filter->work, mlx4_en_filter_work); 241 242 filter->src_ip = src_ip; 243 filter->dst_ip = dst_ip; 244 filter->ip_proto = ip_proto; 245 filter->src_port = src_port; 246 filter->dst_port = dst_port; 247 248 filter->flow_id = flow_id; 249 250 filter->id = priv->last_filter_id++ % RPS_NO_FILTER; 251 252 list_add_tail(&filter->next, &priv->filters); 253 hlist_add_head(&filter->filter_chain, 254 filter_hash_bucket(priv, src_ip, dst_ip, src_port, 255 dst_port)); 256 257 return filter; 258 } 259 260 static void mlx4_en_filter_free(struct mlx4_en_filter *filter) 261 { 262 struct mlx4_en_priv *priv = filter->priv; 263 int rc; 264 265 list_del(&filter->next); 266 267 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 268 if (rc && rc != -ENOENT) 269 en_err(priv, "Error detaching flow. rc = %d\n", rc); 270 271 kfree(filter); 272 } 273 274 static inline struct mlx4_en_filter * 275 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 276 u8 ip_proto, __be16 src_port, __be16 dst_port) 277 { 278 struct mlx4_en_filter *filter; 279 struct mlx4_en_filter *ret = NULL; 280 281 hlist_for_each_entry(filter, 282 filter_hash_bucket(priv, src_ip, dst_ip, 283 src_port, dst_port), 284 filter_chain) { 285 if (filter->src_ip == src_ip && 286 filter->dst_ip == dst_ip && 287 filter->ip_proto == ip_proto && 288 filter->src_port == src_port && 289 filter->dst_port == dst_port) { 290 ret = filter; 291 break; 292 } 293 } 294 295 return ret; 296 } 297 298 static int 299 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 300 u16 rxq_index, u32 flow_id) 301 { 302 struct mlx4_en_priv *priv = netdev_priv(net_dev); 303 struct mlx4_en_filter *filter; 304 const struct iphdr *ip; 305 const __be16 *ports; 306 u8 ip_proto; 307 __be32 src_ip; 308 __be32 dst_ip; 309 __be16 src_port; 310 __be16 dst_port; 311 int nhoff = skb_network_offset(skb); 312 int ret = 0; 313 314 if (skb->protocol != htons(ETH_P_IP)) 315 return -EPROTONOSUPPORT; 316 317 ip = (const struct iphdr *)(skb->data + nhoff); 318 if (ip_is_fragment(ip)) 319 return -EPROTONOSUPPORT; 320 321 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP)) 322 return -EPROTONOSUPPORT; 323 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); 324 325 ip_proto = ip->protocol; 326 src_ip = ip->saddr; 327 dst_ip = ip->daddr; 328 src_port = ports[0]; 329 dst_port = ports[1]; 330 331 spin_lock_bh(&priv->filters_lock); 332 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto, 333 src_port, dst_port); 334 if (filter) { 335 if (filter->rxq_index == rxq_index) 336 goto out; 337 338 filter->rxq_index = rxq_index; 339 } else { 340 filter = mlx4_en_filter_alloc(priv, rxq_index, 341 src_ip, dst_ip, ip_proto, 342 src_port, dst_port, flow_id); 343 if (!filter) { 344 ret = -ENOMEM; 345 goto err; 346 } 347 } 348 349 queue_work(priv->mdev->workqueue, &filter->work); 350 351 out: 352 ret = filter->id; 353 err: 354 spin_unlock_bh(&priv->filters_lock); 355 356 return ret; 357 } 358 359 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv) 360 { 361 struct mlx4_en_filter *filter, *tmp; 362 LIST_HEAD(del_list); 363 364 spin_lock_bh(&priv->filters_lock); 365 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 366 list_move(&filter->next, &del_list); 367 hlist_del(&filter->filter_chain); 368 } 369 spin_unlock_bh(&priv->filters_lock); 370 371 list_for_each_entry_safe(filter, tmp, &del_list, next) { 372 cancel_work_sync(&filter->work); 373 mlx4_en_filter_free(filter); 374 } 375 } 376 377 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv) 378 { 379 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL; 380 LIST_HEAD(del_list); 381 int i = 0; 382 383 spin_lock_bh(&priv->filters_lock); 384 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 385 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA) 386 break; 387 388 if (filter->activated && 389 !work_pending(&filter->work) && 390 rps_may_expire_flow(priv->dev, 391 filter->rxq_index, filter->flow_id, 392 filter->id)) { 393 list_move(&filter->next, &del_list); 394 hlist_del(&filter->filter_chain); 395 } else 396 last_filter = filter; 397 398 i++; 399 } 400 401 if (last_filter && (&last_filter->next != priv->filters.next)) 402 list_move(&priv->filters, &last_filter->next); 403 404 spin_unlock_bh(&priv->filters_lock); 405 406 list_for_each_entry_safe(filter, tmp, &del_list, next) 407 mlx4_en_filter_free(filter); 408 } 409 #endif 410 411 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev, 412 __be16 proto, u16 vid) 413 { 414 struct mlx4_en_priv *priv = netdev_priv(dev); 415 struct mlx4_en_dev *mdev = priv->mdev; 416 int err; 417 int idx; 418 419 en_dbg(HW, priv, "adding VLAN:%d\n", vid); 420 421 set_bit(vid, priv->active_vlans); 422 423 /* Add VID to port VLAN filter */ 424 mutex_lock(&mdev->state_lock); 425 if (mdev->device_up && priv->port_up) { 426 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 427 if (err) 428 en_err(priv, "Failed configuring VLAN filter\n"); 429 } 430 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx)) 431 en_dbg(HW, priv, "failed adding vlan %d\n", vid); 432 mutex_unlock(&mdev->state_lock); 433 434 return 0; 435 } 436 437 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, 438 __be16 proto, u16 vid) 439 { 440 struct mlx4_en_priv *priv = netdev_priv(dev); 441 struct mlx4_en_dev *mdev = priv->mdev; 442 int err; 443 444 en_dbg(HW, priv, "Killing VID:%d\n", vid); 445 446 clear_bit(vid, priv->active_vlans); 447 448 /* Remove VID from port VLAN filter */ 449 mutex_lock(&mdev->state_lock); 450 mlx4_unregister_vlan(mdev->dev, priv->port, vid); 451 452 if (mdev->device_up && priv->port_up) { 453 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 454 if (err) 455 en_err(priv, "Failed configuring VLAN filter\n"); 456 } 457 mutex_unlock(&mdev->state_lock); 458 459 return 0; 460 } 461 462 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) 463 { 464 int i; 465 for (i = ETH_ALEN - 1; i >= 0; --i) { 466 dst_mac[i] = src_mac & 0xff; 467 src_mac >>= 8; 468 } 469 memset(&dst_mac[ETH_ALEN], 0, 2); 470 } 471 472 473 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr, 474 int qpn, u64 *reg_id) 475 { 476 int err; 477 478 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 479 priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 480 return 0; /* do nothing */ 481 482 err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn, 483 MLX4_DOMAIN_NIC, reg_id); 484 if (err) { 485 en_err(priv, "failed to add vxlan steering rule, err %d\n", err); 486 return err; 487 } 488 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id); 489 return 0; 490 } 491 492 493 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv, 494 unsigned char *mac, int *qpn, u64 *reg_id) 495 { 496 struct mlx4_en_dev *mdev = priv->mdev; 497 struct mlx4_dev *dev = mdev->dev; 498 int err; 499 500 switch (dev->caps.steering_mode) { 501 case MLX4_STEERING_MODE_B0: { 502 struct mlx4_qp qp; 503 u8 gid[16] = {0}; 504 505 qp.qpn = *qpn; 506 memcpy(&gid[10], mac, ETH_ALEN); 507 gid[5] = priv->port; 508 509 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH); 510 break; 511 } 512 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 513 struct mlx4_spec_list spec_eth = { {NULL} }; 514 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 515 516 struct mlx4_net_trans_rule rule = { 517 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 518 .exclusive = 0, 519 .allow_loopback = 1, 520 .promisc_mode = MLX4_FS_REGULAR, 521 .priority = MLX4_DOMAIN_NIC, 522 }; 523 524 rule.port = priv->port; 525 rule.qpn = *qpn; 526 INIT_LIST_HEAD(&rule.list); 527 528 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH; 529 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN); 530 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 531 list_add_tail(&spec_eth.list, &rule.list); 532 533 err = mlx4_flow_attach(dev, &rule, reg_id); 534 break; 535 } 536 default: 537 return -EINVAL; 538 } 539 if (err) 540 en_warn(priv, "Failed Attaching Unicast\n"); 541 542 return err; 543 } 544 545 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv, 546 unsigned char *mac, int qpn, u64 reg_id) 547 { 548 struct mlx4_en_dev *mdev = priv->mdev; 549 struct mlx4_dev *dev = mdev->dev; 550 551 switch (dev->caps.steering_mode) { 552 case MLX4_STEERING_MODE_B0: { 553 struct mlx4_qp qp; 554 u8 gid[16] = {0}; 555 556 qp.qpn = qpn; 557 memcpy(&gid[10], mac, ETH_ALEN); 558 gid[5] = priv->port; 559 560 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH); 561 break; 562 } 563 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 564 mlx4_flow_detach(dev, reg_id); 565 break; 566 } 567 default: 568 en_err(priv, "Invalid steering mode.\n"); 569 } 570 } 571 572 static int mlx4_en_get_qp(struct mlx4_en_priv *priv) 573 { 574 struct mlx4_en_dev *mdev = priv->mdev; 575 struct mlx4_dev *dev = mdev->dev; 576 int index = 0; 577 int err = 0; 578 int *qpn = &priv->base_qpn; 579 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 580 581 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n", 582 priv->dev->dev_addr); 583 index = mlx4_register_mac(dev, priv->port, mac); 584 if (index < 0) { 585 err = index; 586 en_err(priv, "Failed adding MAC: %pM\n", 587 priv->dev->dev_addr); 588 return err; 589 } 590 591 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 592 int base_qpn = mlx4_get_base_qpn(dev, priv->port); 593 *qpn = base_qpn + index; 594 return 0; 595 } 596 597 err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP); 598 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); 599 if (err) { 600 en_err(priv, "Failed to reserve qp for mac registration\n"); 601 mlx4_unregister_mac(dev, priv->port, mac); 602 return err; 603 } 604 605 return 0; 606 } 607 608 static void mlx4_en_put_qp(struct mlx4_en_priv *priv) 609 { 610 struct mlx4_en_dev *mdev = priv->mdev; 611 struct mlx4_dev *dev = mdev->dev; 612 int qpn = priv->base_qpn; 613 614 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 615 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 616 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 617 priv->dev->dev_addr); 618 mlx4_unregister_mac(dev, priv->port, mac); 619 } else { 620 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", 621 priv->port, qpn); 622 mlx4_qp_release_range(dev, qpn, 1); 623 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 624 } 625 } 626 627 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, 628 unsigned char *new_mac, unsigned char *prev_mac) 629 { 630 struct mlx4_en_dev *mdev = priv->mdev; 631 struct mlx4_dev *dev = mdev->dev; 632 int err = 0; 633 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac); 634 635 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { 636 struct hlist_head *bucket; 637 unsigned int mac_hash; 638 struct mlx4_mac_entry *entry; 639 struct hlist_node *tmp; 640 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac); 641 642 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; 643 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 644 if (ether_addr_equal_64bits(entry->mac, prev_mac)) { 645 mlx4_en_uc_steer_release(priv, entry->mac, 646 qpn, entry->reg_id); 647 mlx4_unregister_mac(dev, priv->port, 648 prev_mac_u64); 649 hlist_del_rcu(&entry->hlist); 650 synchronize_rcu(); 651 memcpy(entry->mac, new_mac, ETH_ALEN); 652 entry->reg_id = 0; 653 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; 654 hlist_add_head_rcu(&entry->hlist, 655 &priv->mac_hash[mac_hash]); 656 mlx4_register_mac(dev, priv->port, new_mac_u64); 657 err = mlx4_en_uc_steer_add(priv, new_mac, 658 &qpn, 659 &entry->reg_id); 660 if (err) 661 return err; 662 if (priv->tunnel_reg_id) { 663 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 664 priv->tunnel_reg_id = 0; 665 } 666 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn, 667 &priv->tunnel_reg_id); 668 return err; 669 } 670 } 671 return -EINVAL; 672 } 673 674 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); 675 } 676 677 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv, 678 unsigned char new_mac[ETH_ALEN + 2]) 679 { 680 int err = 0; 681 682 if (priv->port_up) { 683 /* Remove old MAC and insert the new one */ 684 err = mlx4_en_replace_mac(priv, priv->base_qpn, 685 new_mac, priv->current_mac); 686 if (err) 687 en_err(priv, "Failed changing HW MAC address\n"); 688 } else 689 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); 690 691 if (!err) 692 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac)); 693 694 return err; 695 } 696 697 static int mlx4_en_set_mac(struct net_device *dev, void *addr) 698 { 699 struct mlx4_en_priv *priv = netdev_priv(dev); 700 struct mlx4_en_dev *mdev = priv->mdev; 701 struct sockaddr *saddr = addr; 702 unsigned char new_mac[ETH_ALEN + 2]; 703 int err; 704 705 if (!is_valid_ether_addr(saddr->sa_data)) 706 return -EADDRNOTAVAIL; 707 708 mutex_lock(&mdev->state_lock); 709 memcpy(new_mac, saddr->sa_data, ETH_ALEN); 710 err = mlx4_en_do_set_mac(priv, new_mac); 711 if (!err) 712 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); 713 mutex_unlock(&mdev->state_lock); 714 715 return err; 716 } 717 718 static void mlx4_en_clear_list(struct net_device *dev) 719 { 720 struct mlx4_en_priv *priv = netdev_priv(dev); 721 struct mlx4_en_mc_list *tmp, *mc_to_del; 722 723 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { 724 list_del(&mc_to_del->list); 725 kfree(mc_to_del); 726 } 727 } 728 729 static void mlx4_en_cache_mclist(struct net_device *dev) 730 { 731 struct mlx4_en_priv *priv = netdev_priv(dev); 732 struct netdev_hw_addr *ha; 733 struct mlx4_en_mc_list *tmp; 734 735 mlx4_en_clear_list(dev); 736 netdev_for_each_mc_addr(ha, dev) { 737 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); 738 if (!tmp) { 739 mlx4_en_clear_list(dev); 740 return; 741 } 742 memcpy(tmp->addr, ha->addr, ETH_ALEN); 743 list_add_tail(&tmp->list, &priv->mc_list); 744 } 745 } 746 747 static void update_mclist_flags(struct mlx4_en_priv *priv, 748 struct list_head *dst, 749 struct list_head *src) 750 { 751 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; 752 bool found; 753 754 /* Find all the entries that should be removed from dst, 755 * These are the entries that are not found in src 756 */ 757 list_for_each_entry(dst_tmp, dst, list) { 758 found = false; 759 list_for_each_entry(src_tmp, src, list) { 760 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 761 found = true; 762 break; 763 } 764 } 765 if (!found) 766 dst_tmp->action = MCLIST_REM; 767 } 768 769 /* Add entries that exist in src but not in dst 770 * mark them as need to add 771 */ 772 list_for_each_entry(src_tmp, src, list) { 773 found = false; 774 list_for_each_entry(dst_tmp, dst, list) { 775 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 776 dst_tmp->action = MCLIST_NONE; 777 found = true; 778 break; 779 } 780 } 781 if (!found) { 782 new_mc = kmemdup(src_tmp, 783 sizeof(struct mlx4_en_mc_list), 784 GFP_KERNEL); 785 if (!new_mc) 786 return; 787 788 new_mc->action = MCLIST_ADD; 789 list_add_tail(&new_mc->list, dst); 790 } 791 } 792 } 793 794 static void mlx4_en_set_rx_mode(struct net_device *dev) 795 { 796 struct mlx4_en_priv *priv = netdev_priv(dev); 797 798 if (!priv->port_up) 799 return; 800 801 queue_work(priv->mdev->workqueue, &priv->rx_mode_task); 802 } 803 804 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, 805 struct mlx4_en_dev *mdev) 806 { 807 int err = 0; 808 809 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { 810 if (netif_msg_rx_status(priv)) 811 en_warn(priv, "Entering promiscuous mode\n"); 812 priv->flags |= MLX4_EN_FLAG_PROMISC; 813 814 /* Enable promiscouos mode */ 815 switch (mdev->dev->caps.steering_mode) { 816 case MLX4_STEERING_MODE_DEVICE_MANAGED: 817 err = mlx4_flow_steer_promisc_add(mdev->dev, 818 priv->port, 819 priv->base_qpn, 820 MLX4_FS_ALL_DEFAULT); 821 if (err) 822 en_err(priv, "Failed enabling promiscuous mode\n"); 823 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 824 break; 825 826 case MLX4_STEERING_MODE_B0: 827 err = mlx4_unicast_promisc_add(mdev->dev, 828 priv->base_qpn, 829 priv->port); 830 if (err) 831 en_err(priv, "Failed enabling unicast promiscuous mode\n"); 832 833 /* Add the default qp number as multicast 834 * promisc 835 */ 836 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 837 err = mlx4_multicast_promisc_add(mdev->dev, 838 priv->base_qpn, 839 priv->port); 840 if (err) 841 en_err(priv, "Failed enabling multicast promiscuous mode\n"); 842 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 843 } 844 break; 845 846 case MLX4_STEERING_MODE_A0: 847 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 848 priv->port, 849 priv->base_qpn, 850 1); 851 if (err) 852 en_err(priv, "Failed enabling promiscuous mode\n"); 853 break; 854 } 855 856 /* Disable port multicast filter (unconditionally) */ 857 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 858 0, MLX4_MCAST_DISABLE); 859 if (err) 860 en_err(priv, "Failed disabling multicast filter\n"); 861 } 862 } 863 864 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv, 865 struct mlx4_en_dev *mdev) 866 { 867 int err = 0; 868 869 if (netif_msg_rx_status(priv)) 870 en_warn(priv, "Leaving promiscuous mode\n"); 871 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 872 873 /* Disable promiscouos mode */ 874 switch (mdev->dev->caps.steering_mode) { 875 case MLX4_STEERING_MODE_DEVICE_MANAGED: 876 err = mlx4_flow_steer_promisc_remove(mdev->dev, 877 priv->port, 878 MLX4_FS_ALL_DEFAULT); 879 if (err) 880 en_err(priv, "Failed disabling promiscuous mode\n"); 881 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 882 break; 883 884 case MLX4_STEERING_MODE_B0: 885 err = mlx4_unicast_promisc_remove(mdev->dev, 886 priv->base_qpn, 887 priv->port); 888 if (err) 889 en_err(priv, "Failed disabling unicast promiscuous mode\n"); 890 /* Disable Multicast promisc */ 891 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 892 err = mlx4_multicast_promisc_remove(mdev->dev, 893 priv->base_qpn, 894 priv->port); 895 if (err) 896 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 897 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 898 } 899 break; 900 901 case MLX4_STEERING_MODE_A0: 902 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 903 priv->port, 904 priv->base_qpn, 0); 905 if (err) 906 en_err(priv, "Failed disabling promiscuous mode\n"); 907 break; 908 } 909 } 910 911 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, 912 struct net_device *dev, 913 struct mlx4_en_dev *mdev) 914 { 915 struct mlx4_en_mc_list *mclist, *tmp; 916 u64 mcast_addr = 0; 917 u8 mc_list[16] = {0}; 918 int err = 0; 919 920 /* Enable/disable the multicast filter according to IFF_ALLMULTI */ 921 if (dev->flags & IFF_ALLMULTI) { 922 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 923 0, MLX4_MCAST_DISABLE); 924 if (err) 925 en_err(priv, "Failed disabling multicast filter\n"); 926 927 /* Add the default qp number as multicast promisc */ 928 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 929 switch (mdev->dev->caps.steering_mode) { 930 case MLX4_STEERING_MODE_DEVICE_MANAGED: 931 err = mlx4_flow_steer_promisc_add(mdev->dev, 932 priv->port, 933 priv->base_qpn, 934 MLX4_FS_MC_DEFAULT); 935 break; 936 937 case MLX4_STEERING_MODE_B0: 938 err = mlx4_multicast_promisc_add(mdev->dev, 939 priv->base_qpn, 940 priv->port); 941 break; 942 943 case MLX4_STEERING_MODE_A0: 944 break; 945 } 946 if (err) 947 en_err(priv, "Failed entering multicast promisc mode\n"); 948 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 949 } 950 } else { 951 /* Disable Multicast promisc */ 952 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 953 switch (mdev->dev->caps.steering_mode) { 954 case MLX4_STEERING_MODE_DEVICE_MANAGED: 955 err = mlx4_flow_steer_promisc_remove(mdev->dev, 956 priv->port, 957 MLX4_FS_MC_DEFAULT); 958 break; 959 960 case MLX4_STEERING_MODE_B0: 961 err = mlx4_multicast_promisc_remove(mdev->dev, 962 priv->base_qpn, 963 priv->port); 964 break; 965 966 case MLX4_STEERING_MODE_A0: 967 break; 968 } 969 if (err) 970 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 971 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 972 } 973 974 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 975 0, MLX4_MCAST_DISABLE); 976 if (err) 977 en_err(priv, "Failed disabling multicast filter\n"); 978 979 /* Flush mcast filter and init it with broadcast address */ 980 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, 981 1, MLX4_MCAST_CONFIG); 982 983 /* Update multicast list - we cache all addresses so they won't 984 * change while HW is updated holding the command semaphor */ 985 netif_addr_lock_bh(dev); 986 mlx4_en_cache_mclist(dev); 987 netif_addr_unlock_bh(dev); 988 list_for_each_entry(mclist, &priv->mc_list, list) { 989 mcast_addr = mlx4_mac_to_u64(mclist->addr); 990 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 991 mcast_addr, 0, MLX4_MCAST_CONFIG); 992 } 993 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 994 0, MLX4_MCAST_ENABLE); 995 if (err) 996 en_err(priv, "Failed enabling multicast filter\n"); 997 998 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); 999 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1000 if (mclist->action == MCLIST_REM) { 1001 /* detach this address and delete from list */ 1002 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1003 mc_list[5] = priv->port; 1004 err = mlx4_multicast_detach(mdev->dev, 1005 &priv->rss_map.indir_qp, 1006 mc_list, 1007 MLX4_PROT_ETH, 1008 mclist->reg_id); 1009 if (err) 1010 en_err(priv, "Fail to detach multicast address\n"); 1011 1012 if (mclist->tunnel_reg_id) { 1013 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id); 1014 if (err) 1015 en_err(priv, "Failed to detach multicast address\n"); 1016 } 1017 1018 /* remove from list */ 1019 list_del(&mclist->list); 1020 kfree(mclist); 1021 } else if (mclist->action == MCLIST_ADD) { 1022 /* attach the address */ 1023 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1024 /* needed for B0 steering support */ 1025 mc_list[5] = priv->port; 1026 err = mlx4_multicast_attach(mdev->dev, 1027 &priv->rss_map.indir_qp, 1028 mc_list, 1029 priv->port, 0, 1030 MLX4_PROT_ETH, 1031 &mclist->reg_id); 1032 if (err) 1033 en_err(priv, "Fail to attach multicast address\n"); 1034 1035 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn, 1036 &mclist->tunnel_reg_id); 1037 if (err) 1038 en_err(priv, "Failed to attach multicast address\n"); 1039 } 1040 } 1041 } 1042 } 1043 1044 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, 1045 struct net_device *dev, 1046 struct mlx4_en_dev *mdev) 1047 { 1048 struct netdev_hw_addr *ha; 1049 struct mlx4_mac_entry *entry; 1050 struct hlist_node *tmp; 1051 bool found; 1052 u64 mac; 1053 int err = 0; 1054 struct hlist_head *bucket; 1055 unsigned int i; 1056 int removed = 0; 1057 u32 prev_flags; 1058 1059 /* Note that we do not need to protect our mac_hash traversal with rcu, 1060 * since all modification code is protected by mdev->state_lock 1061 */ 1062 1063 /* find what to remove */ 1064 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1065 bucket = &priv->mac_hash[i]; 1066 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1067 found = false; 1068 netdev_for_each_uc_addr(ha, dev) { 1069 if (ether_addr_equal_64bits(entry->mac, 1070 ha->addr)) { 1071 found = true; 1072 break; 1073 } 1074 } 1075 1076 /* MAC address of the port is not in uc list */ 1077 if (ether_addr_equal_64bits(entry->mac, 1078 priv->current_mac)) 1079 found = true; 1080 1081 if (!found) { 1082 mac = mlx4_mac_to_u64(entry->mac); 1083 mlx4_en_uc_steer_release(priv, entry->mac, 1084 priv->base_qpn, 1085 entry->reg_id); 1086 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1087 1088 hlist_del_rcu(&entry->hlist); 1089 kfree_rcu(entry, rcu); 1090 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", 1091 entry->mac, priv->port); 1092 ++removed; 1093 } 1094 } 1095 } 1096 1097 /* if we didn't remove anything, there is no use in trying to add 1098 * again once we are in a forced promisc mode state 1099 */ 1100 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) 1101 return; 1102 1103 prev_flags = priv->flags; 1104 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 1105 1106 /* find what to add */ 1107 netdev_for_each_uc_addr(ha, dev) { 1108 found = false; 1109 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; 1110 hlist_for_each_entry(entry, bucket, hlist) { 1111 if (ether_addr_equal_64bits(entry->mac, ha->addr)) { 1112 found = true; 1113 break; 1114 } 1115 } 1116 1117 if (!found) { 1118 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1119 if (!entry) { 1120 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", 1121 ha->addr, priv->port); 1122 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1123 break; 1124 } 1125 mac = mlx4_mac_to_u64(ha->addr); 1126 memcpy(entry->mac, ha->addr, ETH_ALEN); 1127 err = mlx4_register_mac(mdev->dev, priv->port, mac); 1128 if (err < 0) { 1129 en_err(priv, "Failed registering MAC %pM on port %d: %d\n", 1130 ha->addr, priv->port, err); 1131 kfree(entry); 1132 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1133 break; 1134 } 1135 err = mlx4_en_uc_steer_add(priv, ha->addr, 1136 &priv->base_qpn, 1137 &entry->reg_id); 1138 if (err) { 1139 en_err(priv, "Failed adding MAC %pM on port %d: %d\n", 1140 ha->addr, priv->port, err); 1141 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1142 kfree(entry); 1143 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1144 break; 1145 } else { 1146 unsigned int mac_hash; 1147 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", 1148 ha->addr, priv->port); 1149 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; 1150 bucket = &priv->mac_hash[mac_hash]; 1151 hlist_add_head_rcu(&entry->hlist, bucket); 1152 } 1153 } 1154 } 1155 1156 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1157 en_warn(priv, "Forcing promiscuous mode on port:%d\n", 1158 priv->port); 1159 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1160 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", 1161 priv->port); 1162 } 1163 } 1164 1165 static void mlx4_en_do_set_rx_mode(struct work_struct *work) 1166 { 1167 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1168 rx_mode_task); 1169 struct mlx4_en_dev *mdev = priv->mdev; 1170 struct net_device *dev = priv->dev; 1171 1172 mutex_lock(&mdev->state_lock); 1173 if (!mdev->device_up) { 1174 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); 1175 goto out; 1176 } 1177 if (!priv->port_up) { 1178 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); 1179 goto out; 1180 } 1181 1182 if (!netif_carrier_ok(dev)) { 1183 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { 1184 if (priv->port_state.link_state) { 1185 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; 1186 netif_carrier_on(dev); 1187 en_dbg(LINK, priv, "Link Up\n"); 1188 } 1189 } 1190 } 1191 1192 if (dev->priv_flags & IFF_UNICAST_FLT) 1193 mlx4_en_do_uc_filter(priv, dev, mdev); 1194 1195 /* Promsicuous mode: disable all filters */ 1196 if ((dev->flags & IFF_PROMISC) || 1197 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { 1198 mlx4_en_set_promisc_mode(priv, mdev); 1199 goto out; 1200 } 1201 1202 /* Not in promiscuous mode */ 1203 if (priv->flags & MLX4_EN_FLAG_PROMISC) 1204 mlx4_en_clear_promisc_mode(priv, mdev); 1205 1206 mlx4_en_do_multicast(priv, dev, mdev); 1207 out: 1208 mutex_unlock(&mdev->state_lock); 1209 } 1210 1211 #ifdef CONFIG_NET_POLL_CONTROLLER 1212 static void mlx4_en_netpoll(struct net_device *dev) 1213 { 1214 struct mlx4_en_priv *priv = netdev_priv(dev); 1215 struct mlx4_en_cq *cq; 1216 int i; 1217 1218 for (i = 0; i < priv->rx_ring_num; i++) { 1219 cq = priv->rx_cq[i]; 1220 napi_schedule(&cq->napi); 1221 } 1222 } 1223 #endif 1224 1225 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv) 1226 { 1227 u64 reg_id; 1228 int err = 0; 1229 int *qpn = &priv->base_qpn; 1230 struct mlx4_mac_entry *entry; 1231 1232 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); 1233 if (err) 1234 return err; 1235 1236 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn, 1237 &priv->tunnel_reg_id); 1238 if (err) 1239 goto tunnel_err; 1240 1241 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1242 if (!entry) { 1243 err = -ENOMEM; 1244 goto alloc_err; 1245 } 1246 1247 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac)); 1248 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac)); 1249 entry->reg_id = reg_id; 1250 hlist_add_head_rcu(&entry->hlist, 1251 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); 1252 1253 return 0; 1254 1255 alloc_err: 1256 if (priv->tunnel_reg_id) 1257 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 1258 1259 tunnel_err: 1260 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 1261 return err; 1262 } 1263 1264 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv) 1265 { 1266 u64 mac; 1267 unsigned int i; 1268 int qpn = priv->base_qpn; 1269 struct hlist_head *bucket; 1270 struct hlist_node *tmp; 1271 struct mlx4_mac_entry *entry; 1272 1273 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1274 bucket = &priv->mac_hash[i]; 1275 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1276 mac = mlx4_mac_to_u64(entry->mac); 1277 en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n", 1278 entry->mac); 1279 mlx4_en_uc_steer_release(priv, entry->mac, 1280 qpn, entry->reg_id); 1281 1282 mlx4_unregister_mac(priv->mdev->dev, priv->port, mac); 1283 hlist_del_rcu(&entry->hlist); 1284 kfree_rcu(entry, rcu); 1285 } 1286 } 1287 1288 if (priv->tunnel_reg_id) { 1289 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 1290 priv->tunnel_reg_id = 0; 1291 } 1292 } 1293 1294 static void mlx4_en_tx_timeout(struct net_device *dev) 1295 { 1296 struct mlx4_en_priv *priv = netdev_priv(dev); 1297 struct mlx4_en_dev *mdev = priv->mdev; 1298 int i; 1299 1300 if (netif_msg_timer(priv)) 1301 en_warn(priv, "Tx timeout called on port:%d\n", priv->port); 1302 1303 for (i = 0; i < priv->tx_ring_num; i++) { 1304 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) 1305 continue; 1306 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", 1307 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn, 1308 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod); 1309 } 1310 1311 priv->port_stats.tx_timeout++; 1312 en_dbg(DRV, priv, "Scheduling watchdog\n"); 1313 queue_work(mdev->workqueue, &priv->watchdog_task); 1314 } 1315 1316 1317 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev) 1318 { 1319 struct mlx4_en_priv *priv = netdev_priv(dev); 1320 1321 spin_lock_bh(&priv->stats_lock); 1322 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats)); 1323 spin_unlock_bh(&priv->stats_lock); 1324 1325 return &priv->ret_stats; 1326 } 1327 1328 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1329 { 1330 struct mlx4_en_cq *cq; 1331 int i; 1332 1333 /* If we haven't received a specific coalescing setting 1334 * (module param), we set the moderation parameters as follows: 1335 * - moder_cnt is set to the number of mtu sized packets to 1336 * satisfy our coalescing target. 1337 * - moder_time is set to a fixed value. 1338 */ 1339 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1340 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1341 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1342 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1343 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1344 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1345 1346 /* Setup cq moderation params */ 1347 for (i = 0; i < priv->rx_ring_num; i++) { 1348 cq = priv->rx_cq[i]; 1349 cq->moder_cnt = priv->rx_frames; 1350 cq->moder_time = priv->rx_usecs; 1351 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1352 priv->last_moder_packets[i] = 0; 1353 priv->last_moder_bytes[i] = 0; 1354 } 1355 1356 for (i = 0; i < priv->tx_ring_num; i++) { 1357 cq = priv->tx_cq[i]; 1358 cq->moder_cnt = priv->tx_frames; 1359 cq->moder_time = priv->tx_usecs; 1360 } 1361 1362 /* Reset auto-moderation params */ 1363 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1364 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1365 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1366 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1367 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1368 priv->adaptive_rx_coal = 1; 1369 priv->last_moder_jiffies = 0; 1370 priv->last_moder_tx_packets = 0; 1371 } 1372 1373 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1374 { 1375 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1376 struct mlx4_en_cq *cq; 1377 unsigned long packets; 1378 unsigned long rate; 1379 unsigned long avg_pkt_size; 1380 unsigned long rx_packets; 1381 unsigned long rx_bytes; 1382 unsigned long rx_pkt_diff; 1383 int moder_time; 1384 int ring, err; 1385 1386 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1387 return; 1388 1389 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1390 spin_lock_bh(&priv->stats_lock); 1391 rx_packets = priv->rx_ring[ring]->packets; 1392 rx_bytes = priv->rx_ring[ring]->bytes; 1393 spin_unlock_bh(&priv->stats_lock); 1394 1395 rx_pkt_diff = ((unsigned long) (rx_packets - 1396 priv->last_moder_packets[ring])); 1397 packets = rx_pkt_diff; 1398 rate = packets * HZ / period; 1399 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1400 priv->last_moder_bytes[ring])) / packets : 0; 1401 1402 /* Apply auto-moderation only when packet rate 1403 * exceeds a rate that it matters */ 1404 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1405 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1406 if (rate < priv->pkt_rate_low) 1407 moder_time = priv->rx_usecs_low; 1408 else if (rate > priv->pkt_rate_high) 1409 moder_time = priv->rx_usecs_high; 1410 else 1411 moder_time = (rate - priv->pkt_rate_low) * 1412 (priv->rx_usecs_high - priv->rx_usecs_low) / 1413 (priv->pkt_rate_high - priv->pkt_rate_low) + 1414 priv->rx_usecs_low; 1415 } else { 1416 moder_time = priv->rx_usecs_low; 1417 } 1418 1419 if (moder_time != priv->last_moder_time[ring]) { 1420 priv->last_moder_time[ring] = moder_time; 1421 cq = priv->rx_cq[ring]; 1422 cq->moder_time = moder_time; 1423 cq->moder_cnt = priv->rx_frames; 1424 err = mlx4_en_set_cq_moder(priv, cq); 1425 if (err) 1426 en_err(priv, "Failed modifying moderation for cq:%d\n", 1427 ring); 1428 } 1429 priv->last_moder_packets[ring] = rx_packets; 1430 priv->last_moder_bytes[ring] = rx_bytes; 1431 } 1432 1433 priv->last_moder_jiffies = jiffies; 1434 } 1435 1436 static void mlx4_en_do_get_stats(struct work_struct *work) 1437 { 1438 struct delayed_work *delay = to_delayed_work(work); 1439 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1440 stats_task); 1441 struct mlx4_en_dev *mdev = priv->mdev; 1442 int err; 1443 1444 mutex_lock(&mdev->state_lock); 1445 if (mdev->device_up) { 1446 if (priv->port_up) { 1447 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1448 if (err) 1449 en_dbg(HW, priv, "Could not update stats\n"); 1450 1451 mlx4_en_auto_moderation(priv); 1452 } 1453 1454 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1455 } 1456 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1457 mlx4_en_do_set_mac(priv, priv->current_mac); 1458 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1459 } 1460 mutex_unlock(&mdev->state_lock); 1461 } 1462 1463 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1464 * periodically 1465 */ 1466 static void mlx4_en_service_task(struct work_struct *work) 1467 { 1468 struct delayed_work *delay = to_delayed_work(work); 1469 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1470 service_task); 1471 struct mlx4_en_dev *mdev = priv->mdev; 1472 1473 mutex_lock(&mdev->state_lock); 1474 if (mdev->device_up) { 1475 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1476 mlx4_en_ptp_overflow_check(mdev); 1477 1478 mlx4_en_recover_from_oom(priv); 1479 queue_delayed_work(mdev->workqueue, &priv->service_task, 1480 SERVICE_TASK_DELAY); 1481 } 1482 mutex_unlock(&mdev->state_lock); 1483 } 1484 1485 static void mlx4_en_linkstate(struct work_struct *work) 1486 { 1487 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1488 linkstate_task); 1489 struct mlx4_en_dev *mdev = priv->mdev; 1490 int linkstate = priv->link_state; 1491 1492 mutex_lock(&mdev->state_lock); 1493 /* If observable port state changed set carrier state and 1494 * report to system log */ 1495 if (priv->last_link_state != linkstate) { 1496 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1497 en_info(priv, "Link Down\n"); 1498 netif_carrier_off(priv->dev); 1499 } else { 1500 en_info(priv, "Link Up\n"); 1501 netif_carrier_on(priv->dev); 1502 } 1503 } 1504 priv->last_link_state = linkstate; 1505 mutex_unlock(&mdev->state_lock); 1506 } 1507 1508 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1509 { 1510 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx]; 1511 int numa_node = priv->mdev->dev->numa_node; 1512 1513 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL)) 1514 return -ENOMEM; 1515 1516 cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node), 1517 ring->affinity_mask); 1518 return 0; 1519 } 1520 1521 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1522 { 1523 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask); 1524 } 1525 1526 int mlx4_en_start_port(struct net_device *dev) 1527 { 1528 struct mlx4_en_priv *priv = netdev_priv(dev); 1529 struct mlx4_en_dev *mdev = priv->mdev; 1530 struct mlx4_en_cq *cq; 1531 struct mlx4_en_tx_ring *tx_ring; 1532 int rx_index = 0; 1533 int tx_index = 0; 1534 int err = 0; 1535 int i; 1536 int j; 1537 u8 mc_list[16] = {0}; 1538 1539 if (priv->port_up) { 1540 en_dbg(DRV, priv, "start port called while port already up\n"); 1541 return 0; 1542 } 1543 1544 INIT_LIST_HEAD(&priv->mc_list); 1545 INIT_LIST_HEAD(&priv->curr_list); 1546 INIT_LIST_HEAD(&priv->ethtool_list); 1547 memset(&priv->ethtool_rules[0], 0, 1548 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1549 1550 /* Calculate Rx buf size */ 1551 dev->mtu = min(dev->mtu, priv->max_mtu); 1552 mlx4_en_calc_rx_buf(dev); 1553 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1554 1555 /* Configure rx cq's and rings */ 1556 err = mlx4_en_activate_rx_rings(priv); 1557 if (err) { 1558 en_err(priv, "Failed to activate RX rings\n"); 1559 return err; 1560 } 1561 for (i = 0; i < priv->rx_ring_num; i++) { 1562 cq = priv->rx_cq[i]; 1563 1564 mlx4_en_cq_init_lock(cq); 1565 1566 err = mlx4_en_init_affinity_hint(priv, i); 1567 if (err) { 1568 en_err(priv, "Failed preparing IRQ affinity hint\n"); 1569 goto cq_err; 1570 } 1571 1572 err = mlx4_en_activate_cq(priv, cq, i); 1573 if (err) { 1574 en_err(priv, "Failed activating Rx CQ\n"); 1575 mlx4_en_free_affinity_hint(priv, i); 1576 goto cq_err; 1577 } 1578 1579 for (j = 0; j < cq->size; j++) { 1580 struct mlx4_cqe *cqe = NULL; 1581 1582 cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) + 1583 priv->cqe_factor; 1584 cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1585 } 1586 1587 err = mlx4_en_set_cq_moder(priv, cq); 1588 if (err) { 1589 en_err(priv, "Failed setting cq moderation parameters\n"); 1590 mlx4_en_deactivate_cq(priv, cq); 1591 mlx4_en_free_affinity_hint(priv, i); 1592 goto cq_err; 1593 } 1594 mlx4_en_arm_cq(priv, cq); 1595 priv->rx_ring[i]->cqn = cq->mcq.cqn; 1596 ++rx_index; 1597 } 1598 1599 /* Set qp number */ 1600 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1601 err = mlx4_en_get_qp(priv); 1602 if (err) { 1603 en_err(priv, "Failed getting eth qp\n"); 1604 goto cq_err; 1605 } 1606 mdev->mac_removed[priv->port] = 0; 1607 1608 priv->counter_index = 1609 mlx4_get_default_counter_index(mdev->dev, priv->port); 1610 1611 err = mlx4_en_config_rss_steer(priv); 1612 if (err) { 1613 en_err(priv, "Failed configuring rss steering\n"); 1614 goto mac_err; 1615 } 1616 1617 err = mlx4_en_create_drop_qp(priv); 1618 if (err) 1619 goto rss_err; 1620 1621 /* Configure tx cq's and rings */ 1622 for (i = 0; i < priv->tx_ring_num; i++) { 1623 /* Configure cq */ 1624 cq = priv->tx_cq[i]; 1625 err = mlx4_en_activate_cq(priv, cq, i); 1626 if (err) { 1627 en_err(priv, "Failed allocating Tx CQ\n"); 1628 goto tx_err; 1629 } 1630 err = mlx4_en_set_cq_moder(priv, cq); 1631 if (err) { 1632 en_err(priv, "Failed setting cq moderation parameters\n"); 1633 mlx4_en_deactivate_cq(priv, cq); 1634 goto tx_err; 1635 } 1636 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i); 1637 cq->buf->wqe_index = cpu_to_be16(0xffff); 1638 1639 /* Configure ring */ 1640 tx_ring = priv->tx_ring[i]; 1641 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, 1642 i / priv->num_tx_rings_p_up); 1643 if (err) { 1644 en_err(priv, "Failed allocating Tx ring\n"); 1645 mlx4_en_deactivate_cq(priv, cq); 1646 goto tx_err; 1647 } 1648 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1649 1650 /* Arm CQ for TX completions */ 1651 mlx4_en_arm_cq(priv, cq); 1652 1653 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1654 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1655 *((u32 *) (tx_ring->buf + j)) = 0xffffffff; 1656 ++tx_index; 1657 } 1658 1659 /* Configure port */ 1660 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1661 priv->rx_skb_size + ETH_FCS_LEN, 1662 priv->prof->tx_pause, 1663 priv->prof->tx_ppp, 1664 priv->prof->rx_pause, 1665 priv->prof->rx_ppp); 1666 if (err) { 1667 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1668 priv->port, err); 1669 goto tx_err; 1670 } 1671 /* Set default qp number */ 1672 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1673 if (err) { 1674 en_err(priv, "Failed setting default qp numbers\n"); 1675 goto tx_err; 1676 } 1677 1678 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 1679 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 1680 if (err) { 1681 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 1682 err); 1683 goto tx_err; 1684 } 1685 } 1686 1687 /* Init port */ 1688 en_dbg(HW, priv, "Initializing port\n"); 1689 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1690 if (err) { 1691 en_err(priv, "Failed Initializing port\n"); 1692 goto tx_err; 1693 } 1694 1695 /* Set Unicast and VXLAN steering rules */ 1696 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 && 1697 mlx4_en_set_rss_steer_rules(priv)) 1698 mlx4_warn(mdev, "Failed setting steering rules\n"); 1699 1700 /* Attach rx QP to bradcast address */ 1701 eth_broadcast_addr(&mc_list[10]); 1702 mc_list[5] = priv->port; /* needed for B0 steering support */ 1703 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1704 priv->port, 0, MLX4_PROT_ETH, 1705 &priv->broadcast_id)) 1706 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1707 1708 /* Must redo promiscuous mode setup. */ 1709 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1710 1711 /* Schedule multicast task to populate multicast list */ 1712 queue_work(mdev->workqueue, &priv->rx_mode_task); 1713 1714 #ifdef CONFIG_MLX4_EN_VXLAN 1715 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 1716 vxlan_get_rx_port(dev); 1717 #endif 1718 priv->port_up = true; 1719 netif_tx_start_all_queues(dev); 1720 netif_device_attach(dev); 1721 1722 return 0; 1723 1724 tx_err: 1725 while (tx_index--) { 1726 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]); 1727 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]); 1728 } 1729 mlx4_en_destroy_drop_qp(priv); 1730 rss_err: 1731 mlx4_en_release_rss_steer(priv); 1732 mac_err: 1733 mlx4_en_put_qp(priv); 1734 cq_err: 1735 while (rx_index--) { 1736 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); 1737 mlx4_en_free_affinity_hint(priv, rx_index); 1738 } 1739 for (i = 0; i < priv->rx_ring_num; i++) 1740 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1741 1742 return err; /* need to close devices */ 1743 } 1744 1745 1746 void mlx4_en_stop_port(struct net_device *dev, int detach) 1747 { 1748 struct mlx4_en_priv *priv = netdev_priv(dev); 1749 struct mlx4_en_dev *mdev = priv->mdev; 1750 struct mlx4_en_mc_list *mclist, *tmp; 1751 struct ethtool_flow_id *flow, *tmp_flow; 1752 int i; 1753 u8 mc_list[16] = {0}; 1754 1755 if (!priv->port_up) { 1756 en_dbg(DRV, priv, "stop port called while port already down\n"); 1757 return; 1758 } 1759 1760 /* close port*/ 1761 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1762 1763 /* Synchronize with tx routine */ 1764 netif_tx_lock_bh(dev); 1765 if (detach) 1766 netif_device_detach(dev); 1767 netif_tx_stop_all_queues(dev); 1768 netif_tx_unlock_bh(dev); 1769 1770 netif_tx_disable(dev); 1771 1772 /* Set port as not active */ 1773 priv->port_up = false; 1774 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 1775 1776 /* Promsicuous mode */ 1777 if (mdev->dev->caps.steering_mode == 1778 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1779 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | 1780 MLX4_EN_FLAG_MC_PROMISC); 1781 mlx4_flow_steer_promisc_remove(mdev->dev, 1782 priv->port, 1783 MLX4_FS_ALL_DEFAULT); 1784 mlx4_flow_steer_promisc_remove(mdev->dev, 1785 priv->port, 1786 MLX4_FS_MC_DEFAULT); 1787 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { 1788 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 1789 1790 /* Disable promiscouos mode */ 1791 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, 1792 priv->port); 1793 1794 /* Disable Multicast promisc */ 1795 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1796 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, 1797 priv->port); 1798 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1799 } 1800 } 1801 1802 /* Detach All multicasts */ 1803 eth_broadcast_addr(&mc_list[10]); 1804 mc_list[5] = priv->port; /* needed for B0 steering support */ 1805 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1806 MLX4_PROT_ETH, priv->broadcast_id); 1807 list_for_each_entry(mclist, &priv->curr_list, list) { 1808 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1809 mc_list[5] = priv->port; 1810 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, 1811 mc_list, MLX4_PROT_ETH, mclist->reg_id); 1812 if (mclist->tunnel_reg_id) 1813 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id); 1814 } 1815 mlx4_en_clear_list(dev); 1816 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1817 list_del(&mclist->list); 1818 kfree(mclist); 1819 } 1820 1821 /* Flush multicast filter */ 1822 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); 1823 1824 /* Remove flow steering rules for the port*/ 1825 if (mdev->dev->caps.steering_mode == 1826 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1827 ASSERT_RTNL(); 1828 list_for_each_entry_safe(flow, tmp_flow, 1829 &priv->ethtool_list, list) { 1830 mlx4_flow_detach(mdev->dev, flow->id); 1831 list_del(&flow->list); 1832 } 1833 } 1834 1835 mlx4_en_destroy_drop_qp(priv); 1836 1837 /* Free TX Rings */ 1838 for (i = 0; i < priv->tx_ring_num; i++) { 1839 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]); 1840 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]); 1841 } 1842 msleep(10); 1843 1844 for (i = 0; i < priv->tx_ring_num; i++) 1845 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]); 1846 1847 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 1848 mlx4_en_delete_rss_steer_rules(priv); 1849 1850 /* Free RSS qps */ 1851 mlx4_en_release_rss_steer(priv); 1852 1853 /* Unregister Mac address for the port */ 1854 mlx4_en_put_qp(priv); 1855 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN)) 1856 mdev->mac_removed[priv->port] = 1; 1857 1858 /* Free RX Rings */ 1859 for (i = 0; i < priv->rx_ring_num; i++) { 1860 struct mlx4_en_cq *cq = priv->rx_cq[i]; 1861 1862 local_bh_disable(); 1863 while (!mlx4_en_cq_lock_napi(cq)) { 1864 pr_info("CQ %d locked\n", i); 1865 mdelay(1); 1866 } 1867 local_bh_enable(); 1868 1869 napi_synchronize(&cq->napi); 1870 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1871 mlx4_en_deactivate_cq(priv, cq); 1872 1873 mlx4_en_free_affinity_hint(priv, i); 1874 } 1875 } 1876 1877 static void mlx4_en_restart(struct work_struct *work) 1878 { 1879 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1880 watchdog_task); 1881 struct mlx4_en_dev *mdev = priv->mdev; 1882 struct net_device *dev = priv->dev; 1883 1884 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1885 1886 mutex_lock(&mdev->state_lock); 1887 if (priv->port_up) { 1888 mlx4_en_stop_port(dev, 1); 1889 if (mlx4_en_start_port(dev)) 1890 en_err(priv, "Failed restarting port %d\n", priv->port); 1891 } 1892 mutex_unlock(&mdev->state_lock); 1893 } 1894 1895 static void mlx4_en_clear_stats(struct net_device *dev) 1896 { 1897 struct mlx4_en_priv *priv = netdev_priv(dev); 1898 struct mlx4_en_dev *mdev = priv->mdev; 1899 int i; 1900 1901 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1902 en_dbg(HW, priv, "Failed dumping statistics\n"); 1903 1904 memset(&priv->stats, 0, sizeof(priv->stats)); 1905 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1906 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1907 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1908 memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats)); 1909 memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats)); 1910 memset(&priv->rx_priority_flowstats, 0, 1911 sizeof(priv->rx_priority_flowstats)); 1912 memset(&priv->tx_priority_flowstats, 0, 1913 sizeof(priv->tx_priority_flowstats)); 1914 memset(&priv->pf_stats, 0, sizeof(priv->pf_stats)); 1915 1916 for (i = 0; i < priv->tx_ring_num; i++) { 1917 priv->tx_ring[i]->bytes = 0; 1918 priv->tx_ring[i]->packets = 0; 1919 priv->tx_ring[i]->tx_csum = 0; 1920 } 1921 for (i = 0; i < priv->rx_ring_num; i++) { 1922 priv->rx_ring[i]->bytes = 0; 1923 priv->rx_ring[i]->packets = 0; 1924 priv->rx_ring[i]->csum_ok = 0; 1925 priv->rx_ring[i]->csum_none = 0; 1926 priv->rx_ring[i]->csum_complete = 0; 1927 } 1928 } 1929 1930 static int mlx4_en_open(struct net_device *dev) 1931 { 1932 struct mlx4_en_priv *priv = netdev_priv(dev); 1933 struct mlx4_en_dev *mdev = priv->mdev; 1934 int err = 0; 1935 1936 mutex_lock(&mdev->state_lock); 1937 1938 if (!mdev->device_up) { 1939 en_err(priv, "Cannot open - device down/disabled\n"); 1940 err = -EBUSY; 1941 goto out; 1942 } 1943 1944 /* Reset HW statistics and SW counters */ 1945 mlx4_en_clear_stats(dev); 1946 1947 err = mlx4_en_start_port(dev); 1948 if (err) 1949 en_err(priv, "Failed starting port:%d\n", priv->port); 1950 1951 out: 1952 mutex_unlock(&mdev->state_lock); 1953 return err; 1954 } 1955 1956 1957 static int mlx4_en_close(struct net_device *dev) 1958 { 1959 struct mlx4_en_priv *priv = netdev_priv(dev); 1960 struct mlx4_en_dev *mdev = priv->mdev; 1961 1962 en_dbg(IFDOWN, priv, "Close port called\n"); 1963 1964 mutex_lock(&mdev->state_lock); 1965 1966 mlx4_en_stop_port(dev, 0); 1967 netif_carrier_off(dev); 1968 1969 mutex_unlock(&mdev->state_lock); 1970 return 0; 1971 } 1972 1973 void mlx4_en_free_resources(struct mlx4_en_priv *priv) 1974 { 1975 int i; 1976 1977 #ifdef CONFIG_RFS_ACCEL 1978 priv->dev->rx_cpu_rmap = NULL; 1979 #endif 1980 1981 for (i = 0; i < priv->tx_ring_num; i++) { 1982 if (priv->tx_ring && priv->tx_ring[i]) 1983 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 1984 if (priv->tx_cq && priv->tx_cq[i]) 1985 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 1986 } 1987 1988 for (i = 0; i < priv->rx_ring_num; i++) { 1989 if (priv->rx_ring[i]) 1990 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 1991 priv->prof->rx_ring_size, priv->stride); 1992 if (priv->rx_cq[i]) 1993 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 1994 } 1995 1996 } 1997 1998 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 1999 { 2000 struct mlx4_en_port_profile *prof = priv->prof; 2001 int i; 2002 int node; 2003 2004 /* Create tx Rings */ 2005 for (i = 0; i < priv->tx_ring_num; i++) { 2006 node = cpu_to_node(i % num_online_cpus()); 2007 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 2008 prof->tx_ring_size, i, TX, node)) 2009 goto err; 2010 2011 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], 2012 prof->tx_ring_size, TXBB_SIZE, 2013 node, i)) 2014 goto err; 2015 } 2016 2017 /* Create rx Rings */ 2018 for (i = 0; i < priv->rx_ring_num; i++) { 2019 node = cpu_to_node(i % num_online_cpus()); 2020 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 2021 prof->rx_ring_size, i, RX, node)) 2022 goto err; 2023 2024 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 2025 prof->rx_ring_size, priv->stride, 2026 node)) 2027 goto err; 2028 } 2029 2030 #ifdef CONFIG_RFS_ACCEL 2031 priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port); 2032 #endif 2033 2034 return 0; 2035 2036 err: 2037 en_err(priv, "Failed to allocate NIC resources\n"); 2038 for (i = 0; i < priv->rx_ring_num; i++) { 2039 if (priv->rx_ring[i]) 2040 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2041 prof->rx_ring_size, 2042 priv->stride); 2043 if (priv->rx_cq[i]) 2044 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2045 } 2046 for (i = 0; i < priv->tx_ring_num; i++) { 2047 if (priv->tx_ring[i]) 2048 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2049 if (priv->tx_cq[i]) 2050 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2051 } 2052 return -ENOMEM; 2053 } 2054 2055 2056 void mlx4_en_destroy_netdev(struct net_device *dev) 2057 { 2058 struct mlx4_en_priv *priv = netdev_priv(dev); 2059 struct mlx4_en_dev *mdev = priv->mdev; 2060 2061 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2062 2063 /* Unregister device - this will close the port if it was up */ 2064 if (priv->registered) 2065 unregister_netdev(dev); 2066 2067 if (priv->allocated) 2068 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2069 2070 cancel_delayed_work(&priv->stats_task); 2071 cancel_delayed_work(&priv->service_task); 2072 /* flush any pending task for this netdev */ 2073 flush_workqueue(mdev->workqueue); 2074 2075 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2076 mlx4_en_remove_timestamp(mdev); 2077 2078 /* Detach the netdev so tasks would not attempt to access it */ 2079 mutex_lock(&mdev->state_lock); 2080 mdev->pndev[priv->port] = NULL; 2081 mdev->upper[priv->port] = NULL; 2082 mutex_unlock(&mdev->state_lock); 2083 2084 mlx4_en_free_resources(priv); 2085 2086 kfree(priv->tx_ring); 2087 kfree(priv->tx_cq); 2088 2089 free_netdev(dev); 2090 } 2091 2092 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2093 { 2094 struct mlx4_en_priv *priv = netdev_priv(dev); 2095 struct mlx4_en_dev *mdev = priv->mdev; 2096 int err = 0; 2097 2098 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2099 dev->mtu, new_mtu); 2100 2101 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 2102 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 2103 return -EPERM; 2104 } 2105 dev->mtu = new_mtu; 2106 2107 if (netif_running(dev)) { 2108 mutex_lock(&mdev->state_lock); 2109 if (!mdev->device_up) { 2110 /* NIC is probably restarting - let watchdog task reset 2111 * the port */ 2112 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2113 } else { 2114 mlx4_en_stop_port(dev, 1); 2115 err = mlx4_en_start_port(dev); 2116 if (err) { 2117 en_err(priv, "Failed restarting port:%d\n", 2118 priv->port); 2119 queue_work(mdev->workqueue, &priv->watchdog_task); 2120 } 2121 } 2122 mutex_unlock(&mdev->state_lock); 2123 } 2124 return 0; 2125 } 2126 2127 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2128 { 2129 struct mlx4_en_priv *priv = netdev_priv(dev); 2130 struct mlx4_en_dev *mdev = priv->mdev; 2131 struct hwtstamp_config config; 2132 2133 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2134 return -EFAULT; 2135 2136 /* reserved for future extensions */ 2137 if (config.flags) 2138 return -EINVAL; 2139 2140 /* device doesn't support time stamping */ 2141 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2142 return -EINVAL; 2143 2144 /* TX HW timestamp */ 2145 switch (config.tx_type) { 2146 case HWTSTAMP_TX_OFF: 2147 case HWTSTAMP_TX_ON: 2148 break; 2149 default: 2150 return -ERANGE; 2151 } 2152 2153 /* RX HW timestamp */ 2154 switch (config.rx_filter) { 2155 case HWTSTAMP_FILTER_NONE: 2156 break; 2157 case HWTSTAMP_FILTER_ALL: 2158 case HWTSTAMP_FILTER_SOME: 2159 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2160 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2161 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2162 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2163 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2164 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2165 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2166 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2167 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2168 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2169 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2170 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2171 config.rx_filter = HWTSTAMP_FILTER_ALL; 2172 break; 2173 default: 2174 return -ERANGE; 2175 } 2176 2177 if (mlx4_en_reset_config(dev, config, dev->features)) { 2178 config.tx_type = HWTSTAMP_TX_OFF; 2179 config.rx_filter = HWTSTAMP_FILTER_NONE; 2180 } 2181 2182 return copy_to_user(ifr->ifr_data, &config, 2183 sizeof(config)) ? -EFAULT : 0; 2184 } 2185 2186 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2187 { 2188 struct mlx4_en_priv *priv = netdev_priv(dev); 2189 2190 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2191 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2192 } 2193 2194 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2195 { 2196 switch (cmd) { 2197 case SIOCSHWTSTAMP: 2198 return mlx4_en_hwtstamp_set(dev, ifr); 2199 case SIOCGHWTSTAMP: 2200 return mlx4_en_hwtstamp_get(dev, ifr); 2201 default: 2202 return -EOPNOTSUPP; 2203 } 2204 } 2205 2206 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev, 2207 netdev_features_t features) 2208 { 2209 struct mlx4_en_priv *en_priv = netdev_priv(netdev); 2210 struct mlx4_en_dev *mdev = en_priv->mdev; 2211 2212 /* Since there is no support for separate RX C-TAG/S-TAG vlan accel 2213 * enable/disable make sure S-TAG flag is always in same state as 2214 * C-TAG. 2215 */ 2216 if (features & NETIF_F_HW_VLAN_CTAG_RX && 2217 !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 2218 features |= NETIF_F_HW_VLAN_STAG_RX; 2219 else 2220 features &= ~NETIF_F_HW_VLAN_STAG_RX; 2221 2222 return features; 2223 } 2224 2225 static int mlx4_en_set_features(struct net_device *netdev, 2226 netdev_features_t features) 2227 { 2228 struct mlx4_en_priv *priv = netdev_priv(netdev); 2229 bool reset = false; 2230 int ret = 0; 2231 2232 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) { 2233 en_info(priv, "Turn %s RX-FCS\n", 2234 (features & NETIF_F_RXFCS) ? "ON" : "OFF"); 2235 reset = true; 2236 } 2237 2238 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) { 2239 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0; 2240 2241 en_info(priv, "Turn %s RX-ALL\n", 2242 ignore_fcs_value ? "ON" : "OFF"); 2243 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev, 2244 priv->port, ignore_fcs_value); 2245 if (ret) 2246 return ret; 2247 } 2248 2249 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 2250 en_info(priv, "Turn %s RX vlan strip offload\n", 2251 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF"); 2252 reset = true; 2253 } 2254 2255 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX)) 2256 en_info(priv, "Turn %s TX vlan strip offload\n", 2257 (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF"); 2258 2259 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX)) 2260 en_info(priv, "Turn %s TX S-VLAN strip offload\n", 2261 (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF"); 2262 2263 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) { 2264 en_info(priv, "Turn %s loopback\n", 2265 (features & NETIF_F_LOOPBACK) ? "ON" : "OFF"); 2266 mlx4_en_update_loopback_state(netdev, features); 2267 } 2268 2269 if (reset) { 2270 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config, 2271 features); 2272 if (ret) 2273 return ret; 2274 } 2275 2276 return 0; 2277 } 2278 2279 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2280 { 2281 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2282 struct mlx4_en_dev *mdev = en_priv->mdev; 2283 u64 mac_u64 = mlx4_mac_to_u64(mac); 2284 2285 if (!is_valid_ether_addr(mac)) 2286 return -EINVAL; 2287 2288 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2289 } 2290 2291 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) 2292 { 2293 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2294 struct mlx4_en_dev *mdev = en_priv->mdev; 2295 2296 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos); 2297 } 2298 2299 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, 2300 int max_tx_rate) 2301 { 2302 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2303 struct mlx4_en_dev *mdev = en_priv->mdev; 2304 2305 return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate, 2306 max_tx_rate); 2307 } 2308 2309 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2310 { 2311 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2312 struct mlx4_en_dev *mdev = en_priv->mdev; 2313 2314 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2315 } 2316 2317 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2318 { 2319 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2320 struct mlx4_en_dev *mdev = en_priv->mdev; 2321 2322 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2323 } 2324 2325 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2326 { 2327 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2328 struct mlx4_en_dev *mdev = en_priv->mdev; 2329 2330 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2331 } 2332 2333 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf, 2334 struct ifla_vf_stats *vf_stats) 2335 { 2336 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2337 struct mlx4_en_dev *mdev = en_priv->mdev; 2338 2339 return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats); 2340 } 2341 2342 #define PORT_ID_BYTE_LEN 8 2343 static int mlx4_en_get_phys_port_id(struct net_device *dev, 2344 struct netdev_phys_item_id *ppid) 2345 { 2346 struct mlx4_en_priv *priv = netdev_priv(dev); 2347 struct mlx4_dev *mdev = priv->mdev->dev; 2348 int i; 2349 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2350 2351 if (!phys_port_id) 2352 return -EOPNOTSUPP; 2353 2354 ppid->id_len = sizeof(phys_port_id); 2355 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2356 ppid->id[i] = phys_port_id & 0xff; 2357 phys_port_id >>= 8; 2358 } 2359 return 0; 2360 } 2361 2362 #ifdef CONFIG_MLX4_EN_VXLAN 2363 static void mlx4_en_add_vxlan_offloads(struct work_struct *work) 2364 { 2365 int ret; 2366 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2367 vxlan_add_task); 2368 2369 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port); 2370 if (ret) 2371 goto out; 2372 2373 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2374 VXLAN_STEER_BY_OUTER_MAC, 1); 2375 out: 2376 if (ret) { 2377 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2378 return; 2379 } 2380 2381 /* set offloads */ 2382 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2383 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL; 2384 priv->dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; 2385 priv->dev->features |= NETIF_F_GSO_UDP_TUNNEL; 2386 } 2387 2388 static void mlx4_en_del_vxlan_offloads(struct work_struct *work) 2389 { 2390 int ret; 2391 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2392 vxlan_del_task); 2393 /* unset offloads */ 2394 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2395 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL); 2396 priv->dev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL; 2397 priv->dev->features &= ~NETIF_F_GSO_UDP_TUNNEL; 2398 2399 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2400 VXLAN_STEER_BY_OUTER_MAC, 0); 2401 if (ret) 2402 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2403 2404 priv->vxlan_port = 0; 2405 } 2406 2407 static void mlx4_en_add_vxlan_port(struct net_device *dev, 2408 sa_family_t sa_family, __be16 port) 2409 { 2410 struct mlx4_en_priv *priv = netdev_priv(dev); 2411 __be16 current_port; 2412 2413 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2414 return; 2415 2416 if (sa_family == AF_INET6) 2417 return; 2418 2419 current_port = priv->vxlan_port; 2420 if (current_port && current_port != port) { 2421 en_warn(priv, "vxlan port %d configured, can't add port %d\n", 2422 ntohs(current_port), ntohs(port)); 2423 return; 2424 } 2425 2426 priv->vxlan_port = port; 2427 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task); 2428 } 2429 2430 static void mlx4_en_del_vxlan_port(struct net_device *dev, 2431 sa_family_t sa_family, __be16 port) 2432 { 2433 struct mlx4_en_priv *priv = netdev_priv(dev); 2434 __be16 current_port; 2435 2436 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2437 return; 2438 2439 if (sa_family == AF_INET6) 2440 return; 2441 2442 current_port = priv->vxlan_port; 2443 if (current_port != port) { 2444 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port)); 2445 return; 2446 } 2447 2448 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task); 2449 } 2450 2451 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb, 2452 struct net_device *dev, 2453 netdev_features_t features) 2454 { 2455 features = vlan_features_check(skb, features); 2456 return vxlan_features_check(skb, features); 2457 } 2458 #endif 2459 2460 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate) 2461 { 2462 struct mlx4_en_priv *priv = netdev_priv(dev); 2463 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index]; 2464 struct mlx4_update_qp_params params; 2465 int err; 2466 2467 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT)) 2468 return -EOPNOTSUPP; 2469 2470 /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */ 2471 if (maxrate >> 12) { 2472 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS; 2473 params.rate_val = maxrate / 1000; 2474 } else if (maxrate) { 2475 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS; 2476 params.rate_val = maxrate; 2477 } else { /* zero serves to revoke the QP rate-limitation */ 2478 params.rate_unit = 0; 2479 params.rate_val = 0; 2480 } 2481 2482 err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT, 2483 ¶ms); 2484 return err; 2485 } 2486 2487 static const struct net_device_ops mlx4_netdev_ops = { 2488 .ndo_open = mlx4_en_open, 2489 .ndo_stop = mlx4_en_close, 2490 .ndo_start_xmit = mlx4_en_xmit, 2491 .ndo_select_queue = mlx4_en_select_queue, 2492 .ndo_get_stats = mlx4_en_get_stats, 2493 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2494 .ndo_set_mac_address = mlx4_en_set_mac, 2495 .ndo_validate_addr = eth_validate_addr, 2496 .ndo_change_mtu = mlx4_en_change_mtu, 2497 .ndo_do_ioctl = mlx4_en_ioctl, 2498 .ndo_tx_timeout = mlx4_en_tx_timeout, 2499 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2500 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2501 #ifdef CONFIG_NET_POLL_CONTROLLER 2502 .ndo_poll_controller = mlx4_en_netpoll, 2503 #endif 2504 .ndo_set_features = mlx4_en_set_features, 2505 .ndo_fix_features = mlx4_en_fix_features, 2506 .ndo_setup_tc = mlx4_en_setup_tc, 2507 #ifdef CONFIG_RFS_ACCEL 2508 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2509 #endif 2510 #ifdef CONFIG_NET_RX_BUSY_POLL 2511 .ndo_busy_poll = mlx4_en_low_latency_recv, 2512 #endif 2513 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2514 #ifdef CONFIG_MLX4_EN_VXLAN 2515 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2516 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2517 .ndo_features_check = mlx4_en_features_check, 2518 #endif 2519 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2520 }; 2521 2522 static const struct net_device_ops mlx4_netdev_ops_master = { 2523 .ndo_open = mlx4_en_open, 2524 .ndo_stop = mlx4_en_close, 2525 .ndo_start_xmit = mlx4_en_xmit, 2526 .ndo_select_queue = mlx4_en_select_queue, 2527 .ndo_get_stats = mlx4_en_get_stats, 2528 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2529 .ndo_set_mac_address = mlx4_en_set_mac, 2530 .ndo_validate_addr = eth_validate_addr, 2531 .ndo_change_mtu = mlx4_en_change_mtu, 2532 .ndo_tx_timeout = mlx4_en_tx_timeout, 2533 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2534 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2535 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2536 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2537 .ndo_set_vf_rate = mlx4_en_set_vf_rate, 2538 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2539 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2540 .ndo_get_vf_stats = mlx4_en_get_vf_stats, 2541 .ndo_get_vf_config = mlx4_en_get_vf_config, 2542 #ifdef CONFIG_NET_POLL_CONTROLLER 2543 .ndo_poll_controller = mlx4_en_netpoll, 2544 #endif 2545 .ndo_set_features = mlx4_en_set_features, 2546 .ndo_fix_features = mlx4_en_fix_features, 2547 .ndo_setup_tc = mlx4_en_setup_tc, 2548 #ifdef CONFIG_RFS_ACCEL 2549 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2550 #endif 2551 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2552 #ifdef CONFIG_MLX4_EN_VXLAN 2553 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2554 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2555 .ndo_features_check = mlx4_en_features_check, 2556 #endif 2557 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2558 }; 2559 2560 struct mlx4_en_bond { 2561 struct work_struct work; 2562 struct mlx4_en_priv *priv; 2563 int is_bonded; 2564 struct mlx4_port_map port_map; 2565 }; 2566 2567 static void mlx4_en_bond_work(struct work_struct *work) 2568 { 2569 struct mlx4_en_bond *bond = container_of(work, 2570 struct mlx4_en_bond, 2571 work); 2572 int err = 0; 2573 struct mlx4_dev *dev = bond->priv->mdev->dev; 2574 2575 if (bond->is_bonded) { 2576 if (!mlx4_is_bonded(dev)) { 2577 err = mlx4_bond(dev); 2578 if (err) 2579 en_err(bond->priv, "Fail to bond device\n"); 2580 } 2581 if (!err) { 2582 err = mlx4_port_map_set(dev, &bond->port_map); 2583 if (err) 2584 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n", 2585 bond->port_map.port1, 2586 bond->port_map.port2, 2587 err); 2588 } 2589 } else if (mlx4_is_bonded(dev)) { 2590 err = mlx4_unbond(dev); 2591 if (err) 2592 en_err(bond->priv, "Fail to unbond device\n"); 2593 } 2594 dev_put(bond->priv->dev); 2595 kfree(bond); 2596 } 2597 2598 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded, 2599 u8 v2p_p1, u8 v2p_p2) 2600 { 2601 struct mlx4_en_bond *bond = NULL; 2602 2603 bond = kzalloc(sizeof(*bond), GFP_ATOMIC); 2604 if (!bond) 2605 return -ENOMEM; 2606 2607 INIT_WORK(&bond->work, mlx4_en_bond_work); 2608 bond->priv = priv; 2609 bond->is_bonded = is_bonded; 2610 bond->port_map.port1 = v2p_p1; 2611 bond->port_map.port2 = v2p_p2; 2612 dev_hold(priv->dev); 2613 queue_work(priv->mdev->workqueue, &bond->work); 2614 return 0; 2615 } 2616 2617 int mlx4_en_netdev_event(struct notifier_block *this, 2618 unsigned long event, void *ptr) 2619 { 2620 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 2621 u8 port = 0; 2622 struct mlx4_en_dev *mdev; 2623 struct mlx4_dev *dev; 2624 int i, num_eth_ports = 0; 2625 bool do_bond = true; 2626 struct mlx4_en_priv *priv; 2627 u8 v2p_port1 = 0; 2628 u8 v2p_port2 = 0; 2629 2630 if (!net_eq(dev_net(ndev), &init_net)) 2631 return NOTIFY_DONE; 2632 2633 mdev = container_of(this, struct mlx4_en_dev, nb); 2634 dev = mdev->dev; 2635 2636 /* Go into this mode only when two network devices set on two ports 2637 * of the same mlx4 device are slaves of the same bonding master 2638 */ 2639 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { 2640 ++num_eth_ports; 2641 if (!port && (mdev->pndev[i] == ndev)) 2642 port = i; 2643 mdev->upper[i] = mdev->pndev[i] ? 2644 netdev_master_upper_dev_get(mdev->pndev[i]) : NULL; 2645 /* condition not met: network device is a slave */ 2646 if (!mdev->upper[i]) 2647 do_bond = false; 2648 if (num_eth_ports < 2) 2649 continue; 2650 /* condition not met: same master */ 2651 if (mdev->upper[i] != mdev->upper[i-1]) 2652 do_bond = false; 2653 } 2654 /* condition not met: 2 salves */ 2655 do_bond = (num_eth_ports == 2) ? do_bond : false; 2656 2657 /* handle only events that come with enough info */ 2658 if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port) 2659 return NOTIFY_DONE; 2660 2661 priv = netdev_priv(ndev); 2662 if (do_bond) { 2663 struct netdev_notifier_bonding_info *notifier_info = ptr; 2664 struct netdev_bonding_info *bonding_info = 2665 ¬ifier_info->bonding_info; 2666 2667 /* required mode 1, 2 or 4 */ 2668 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) && 2669 (bonding_info->master.bond_mode != BOND_MODE_XOR) && 2670 (bonding_info->master.bond_mode != BOND_MODE_8023AD)) 2671 do_bond = false; 2672 2673 /* require exactly 2 slaves */ 2674 if (bonding_info->master.num_slaves != 2) 2675 do_bond = false; 2676 2677 /* calc v2p */ 2678 if (do_bond) { 2679 if (bonding_info->master.bond_mode == 2680 BOND_MODE_ACTIVEBACKUP) { 2681 /* in active-backup mode virtual ports are 2682 * mapped to the physical port of the active 2683 * slave */ 2684 if (bonding_info->slave.state == 2685 BOND_STATE_BACKUP) { 2686 if (port == 1) { 2687 v2p_port1 = 2; 2688 v2p_port2 = 2; 2689 } else { 2690 v2p_port1 = 1; 2691 v2p_port2 = 1; 2692 } 2693 } else { /* BOND_STATE_ACTIVE */ 2694 if (port == 1) { 2695 v2p_port1 = 1; 2696 v2p_port2 = 1; 2697 } else { 2698 v2p_port1 = 2; 2699 v2p_port2 = 2; 2700 } 2701 } 2702 } else { /* Active-Active */ 2703 /* in active-active mode a virtual port is 2704 * mapped to the native physical port if and only 2705 * if the physical port is up */ 2706 __s8 link = bonding_info->slave.link; 2707 2708 if (port == 1) 2709 v2p_port2 = 2; 2710 else 2711 v2p_port1 = 1; 2712 if ((link == BOND_LINK_UP) || 2713 (link == BOND_LINK_FAIL)) { 2714 if (port == 1) 2715 v2p_port1 = 1; 2716 else 2717 v2p_port2 = 2; 2718 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */ 2719 if (port == 1) 2720 v2p_port1 = 2; 2721 else 2722 v2p_port2 = 1; 2723 } 2724 } 2725 } 2726 } 2727 2728 mlx4_en_queue_bond_work(priv, do_bond, 2729 v2p_port1, v2p_port2); 2730 2731 return NOTIFY_DONE; 2732 } 2733 2734 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev, 2735 struct mlx4_en_stats_bitmap *stats_bitmap, 2736 u8 rx_ppp, u8 rx_pause, 2737 u8 tx_ppp, u8 tx_pause) 2738 { 2739 int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS; 2740 2741 if (!mlx4_is_slave(dev) && 2742 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) { 2743 mutex_lock(&stats_bitmap->mutex); 2744 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS); 2745 2746 if (rx_ppp) 2747 bitmap_set(stats_bitmap->bitmap, last_i, 2748 NUM_FLOW_PRIORITY_STATS_RX); 2749 last_i += NUM_FLOW_PRIORITY_STATS_RX; 2750 2751 if (rx_pause && !(rx_ppp)) 2752 bitmap_set(stats_bitmap->bitmap, last_i, 2753 NUM_FLOW_STATS_RX); 2754 last_i += NUM_FLOW_STATS_RX; 2755 2756 if (tx_ppp) 2757 bitmap_set(stats_bitmap->bitmap, last_i, 2758 NUM_FLOW_PRIORITY_STATS_TX); 2759 last_i += NUM_FLOW_PRIORITY_STATS_TX; 2760 2761 if (tx_pause && !(tx_ppp)) 2762 bitmap_set(stats_bitmap->bitmap, last_i, 2763 NUM_FLOW_STATS_TX); 2764 last_i += NUM_FLOW_STATS_TX; 2765 2766 mutex_unlock(&stats_bitmap->mutex); 2767 } 2768 } 2769 2770 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev, 2771 struct mlx4_en_stats_bitmap *stats_bitmap, 2772 u8 rx_ppp, u8 rx_pause, 2773 u8 tx_ppp, u8 tx_pause) 2774 { 2775 int last_i = 0; 2776 2777 mutex_init(&stats_bitmap->mutex); 2778 bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS); 2779 2780 if (mlx4_is_slave(dev)) { 2781 bitmap_set(stats_bitmap->bitmap, last_i + 2782 MLX4_FIND_NETDEV_STAT(rx_packets), 1); 2783 bitmap_set(stats_bitmap->bitmap, last_i + 2784 MLX4_FIND_NETDEV_STAT(tx_packets), 1); 2785 bitmap_set(stats_bitmap->bitmap, last_i + 2786 MLX4_FIND_NETDEV_STAT(rx_bytes), 1); 2787 bitmap_set(stats_bitmap->bitmap, last_i + 2788 MLX4_FIND_NETDEV_STAT(tx_bytes), 1); 2789 bitmap_set(stats_bitmap->bitmap, last_i + 2790 MLX4_FIND_NETDEV_STAT(rx_dropped), 1); 2791 bitmap_set(stats_bitmap->bitmap, last_i + 2792 MLX4_FIND_NETDEV_STAT(tx_dropped), 1); 2793 } else { 2794 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS); 2795 } 2796 last_i += NUM_MAIN_STATS; 2797 2798 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS); 2799 last_i += NUM_PORT_STATS; 2800 2801 if (mlx4_is_master(dev)) 2802 bitmap_set(stats_bitmap->bitmap, last_i, 2803 NUM_PF_STATS); 2804 last_i += NUM_PF_STATS; 2805 2806 mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap, 2807 rx_ppp, rx_pause, 2808 tx_ppp, tx_pause); 2809 last_i += NUM_FLOW_STATS; 2810 2811 if (!mlx4_is_slave(dev)) 2812 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS); 2813 } 2814 2815 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 2816 struct mlx4_en_port_profile *prof) 2817 { 2818 struct net_device *dev; 2819 struct mlx4_en_priv *priv; 2820 int i; 2821 int err; 2822 2823 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 2824 MAX_TX_RINGS, MAX_RX_RINGS); 2825 if (dev == NULL) 2826 return -ENOMEM; 2827 2828 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 2829 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 2830 2831 SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev); 2832 dev->dev_port = port - 1; 2833 2834 /* 2835 * Initialize driver private data 2836 */ 2837 2838 priv = netdev_priv(dev); 2839 memset(priv, 0, sizeof(struct mlx4_en_priv)); 2840 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 2841 spin_lock_init(&priv->stats_lock); 2842 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 2843 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 2844 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 2845 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 2846 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 2847 #ifdef CONFIG_MLX4_EN_VXLAN 2848 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads); 2849 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads); 2850 #endif 2851 #ifdef CONFIG_RFS_ACCEL 2852 INIT_LIST_HEAD(&priv->filters); 2853 spin_lock_init(&priv->filters_lock); 2854 #endif 2855 2856 priv->dev = dev; 2857 priv->mdev = mdev; 2858 priv->ddev = &mdev->pdev->dev; 2859 priv->prof = prof; 2860 priv->port = port; 2861 priv->port_up = false; 2862 priv->flags = prof->flags; 2863 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME; 2864 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 2865 MLX4_WQE_CTRL_SOLICITED); 2866 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 2867 priv->tx_ring_num = prof->tx_ring_num; 2868 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK; 2869 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key)); 2870 2871 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 2872 GFP_KERNEL); 2873 if (!priv->tx_ring) { 2874 err = -ENOMEM; 2875 goto out; 2876 } 2877 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 2878 GFP_KERNEL); 2879 if (!priv->tx_cq) { 2880 err = -ENOMEM; 2881 goto out; 2882 } 2883 priv->rx_ring_num = prof->rx_ring_num; 2884 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 2885 priv->cqe_size = mdev->dev->caps.cqe_size; 2886 priv->mac_index = -1; 2887 priv->msg_enable = MLX4_EN_MSG_LEVEL; 2888 #ifdef CONFIG_MLX4_EN_DCB 2889 if (!mlx4_is_slave(priv->mdev->dev)) { 2890 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) { 2891 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 2892 } else { 2893 en_info(priv, "enabling only PFC DCB ops\n"); 2894 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 2895 } 2896 } 2897 #endif 2898 2899 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 2900 INIT_HLIST_HEAD(&priv->mac_hash[i]); 2901 2902 /* Query for default mac and max mtu */ 2903 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 2904 2905 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] & 2906 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP) 2907 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP; 2908 2909 /* Set default MAC */ 2910 dev->addr_len = ETH_ALEN; 2911 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 2912 if (!is_valid_ether_addr(dev->dev_addr)) { 2913 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 2914 priv->port, dev->dev_addr); 2915 err = -EINVAL; 2916 goto out; 2917 } else if (mlx4_is_slave(priv->mdev->dev) && 2918 (priv->mdev->dev->port_random_macs & 1 << priv->port)) { 2919 /* Random MAC was assigned in mlx4_slave_cap 2920 * in mlx4_core module 2921 */ 2922 dev->addr_assign_type |= NET_ADDR_RANDOM; 2923 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 2924 } 2925 2926 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac)); 2927 2928 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2929 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2930 err = mlx4_en_alloc_resources(priv); 2931 if (err) 2932 goto out; 2933 2934 /* Initialize time stamping config */ 2935 priv->hwtstamp_config.flags = 0; 2936 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 2937 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 2938 2939 /* Allocate page for receive rings */ 2940 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 2941 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE); 2942 if (err) { 2943 en_err(priv, "Failed to allocate page for rx qps\n"); 2944 goto out; 2945 } 2946 priv->allocated = 1; 2947 2948 /* 2949 * Initialize netdev entry points 2950 */ 2951 if (mlx4_is_master(priv->mdev->dev)) 2952 dev->netdev_ops = &mlx4_netdev_ops_master; 2953 else 2954 dev->netdev_ops = &mlx4_netdev_ops; 2955 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 2956 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 2957 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 2958 2959 dev->ethtool_ops = &mlx4_en_ethtool_ops; 2960 2961 /* 2962 * Set driver features 2963 */ 2964 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2965 if (mdev->LSO_support) 2966 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2967 2968 dev->vlan_features = dev->hw_features; 2969 2970 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 2971 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 2972 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 2973 NETIF_F_HW_VLAN_CTAG_FILTER; 2974 dev->hw_features |= NETIF_F_LOOPBACK | 2975 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 2976 2977 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) { 2978 dev->features |= NETIF_F_HW_VLAN_STAG_RX | 2979 NETIF_F_HW_VLAN_STAG_FILTER; 2980 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX; 2981 } 2982 2983 if (mlx4_is_slave(mdev->dev)) { 2984 int phv; 2985 2986 err = get_phv_bit(mdev->dev, port, &phv); 2987 if (!err && phv) { 2988 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 2989 priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV; 2990 } 2991 } else { 2992 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN && 2993 !(mdev->dev->caps.flags2 & 2994 MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 2995 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 2996 } 2997 2998 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) 2999 dev->hw_features |= NETIF_F_RXFCS; 3000 3001 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS) 3002 dev->hw_features |= NETIF_F_RXALL; 3003 3004 if (mdev->dev->caps.steering_mode == 3005 MLX4_STEERING_MODE_DEVICE_MANAGED && 3006 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC) 3007 dev->hw_features |= NETIF_F_NTUPLE; 3008 3009 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 3010 dev->priv_flags |= IFF_UNICAST_FLT; 3011 3012 /* Setting a default hash function value */ 3013 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) { 3014 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 3015 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) { 3016 priv->rss_hash_fn = ETH_RSS_HASH_XOR; 3017 } else { 3018 en_warn(priv, 3019 "No RSS hash capabilities exposed, using Toeplitz\n"); 3020 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 3021 } 3022 3023 mdev->pndev[port] = dev; 3024 mdev->upper[port] = NULL; 3025 3026 netif_carrier_off(dev); 3027 mlx4_en_set_default_moderation(priv); 3028 3029 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 3030 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 3031 3032 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 3033 3034 /* Configure port */ 3035 mlx4_en_calc_rx_buf(dev); 3036 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 3037 priv->rx_skb_size + ETH_FCS_LEN, 3038 prof->tx_pause, prof->tx_ppp, 3039 prof->rx_pause, prof->rx_ppp); 3040 if (err) { 3041 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 3042 priv->port, err); 3043 goto out; 3044 } 3045 3046 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 3047 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 3048 if (err) { 3049 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 3050 err); 3051 goto out; 3052 } 3053 } 3054 3055 /* Init port */ 3056 en_warn(priv, "Initializing port\n"); 3057 err = mlx4_INIT_PORT(mdev->dev, priv->port); 3058 if (err) { 3059 en_err(priv, "Failed Initializing port\n"); 3060 goto out; 3061 } 3062 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 3063 3064 /* Initialize time stamp mechanism */ 3065 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 3066 mlx4_en_init_timestamp(mdev); 3067 3068 queue_delayed_work(mdev->workqueue, &priv->service_task, 3069 SERVICE_TASK_DELAY); 3070 3071 mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap, 3072 mdev->profile.prof[priv->port].rx_ppp, 3073 mdev->profile.prof[priv->port].rx_pause, 3074 mdev->profile.prof[priv->port].tx_ppp, 3075 mdev->profile.prof[priv->port].tx_pause); 3076 3077 err = register_netdev(dev); 3078 if (err) { 3079 en_err(priv, "Netdev registration failed for port %d\n", port); 3080 goto out; 3081 } 3082 3083 priv->registered = 1; 3084 3085 return 0; 3086 3087 out: 3088 mlx4_en_destroy_netdev(dev); 3089 return err; 3090 } 3091 3092 int mlx4_en_reset_config(struct net_device *dev, 3093 struct hwtstamp_config ts_config, 3094 netdev_features_t features) 3095 { 3096 struct mlx4_en_priv *priv = netdev_priv(dev); 3097 struct mlx4_en_dev *mdev = priv->mdev; 3098 int port_up = 0; 3099 int err = 0; 3100 3101 if (priv->hwtstamp_config.tx_type == ts_config.tx_type && 3102 priv->hwtstamp_config.rx_filter == ts_config.rx_filter && 3103 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3104 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) 3105 return 0; /* Nothing to change */ 3106 3107 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3108 (features & NETIF_F_HW_VLAN_CTAG_RX) && 3109 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) { 3110 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n"); 3111 return -EINVAL; 3112 } 3113 3114 mutex_lock(&mdev->state_lock); 3115 if (priv->port_up) { 3116 port_up = 1; 3117 mlx4_en_stop_port(dev, 1); 3118 } 3119 3120 mlx4_en_free_resources(priv); 3121 3122 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n", 3123 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX)); 3124 3125 priv->hwtstamp_config.tx_type = ts_config.tx_type; 3126 priv->hwtstamp_config.rx_filter = ts_config.rx_filter; 3127 3128 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 3129 if (features & NETIF_F_HW_VLAN_CTAG_RX) 3130 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3131 else 3132 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3133 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) { 3134 /* RX time-stamping is OFF, update the RX vlan offload 3135 * to the latest wanted state 3136 */ 3137 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX) 3138 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3139 else 3140 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3141 } 3142 3143 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) { 3144 if (features & NETIF_F_RXFCS) 3145 dev->features |= NETIF_F_RXFCS; 3146 else 3147 dev->features &= ~NETIF_F_RXFCS; 3148 } 3149 3150 /* RX vlan offload and RX time-stamping can't co-exist ! 3151 * Regardless of the caller's choice, 3152 * Turn Off RX vlan offload in case of time-stamping is ON 3153 */ 3154 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) { 3155 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 3156 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n"); 3157 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3158 } 3159 3160 err = mlx4_en_alloc_resources(priv); 3161 if (err) { 3162 en_err(priv, "Failed reallocating port resources\n"); 3163 goto out; 3164 } 3165 if (port_up) { 3166 err = mlx4_en_start_port(dev); 3167 if (err) 3168 en_err(priv, "Failed starting port\n"); 3169 } 3170 3171 out: 3172 mutex_unlock(&mdev->state_lock); 3173 netdev_features_change(dev); 3174 return err; 3175 } 3176