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 struct mlx4_mac_entry *entry; 577 int index = 0; 578 int err = 0; 579 u64 reg_id = 0; 580 int *qpn = &priv->base_qpn; 581 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 582 583 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n", 584 priv->dev->dev_addr); 585 index = mlx4_register_mac(dev, priv->port, mac); 586 if (index < 0) { 587 err = index; 588 en_err(priv, "Failed adding MAC: %pM\n", 589 priv->dev->dev_addr); 590 return err; 591 } 592 593 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 594 int base_qpn = mlx4_get_base_qpn(dev, priv->port); 595 *qpn = base_qpn + index; 596 return 0; 597 } 598 599 err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP); 600 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); 601 if (err) { 602 en_err(priv, "Failed to reserve qp for mac registration\n"); 603 goto qp_err; 604 } 605 606 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); 607 if (err) 608 goto steer_err; 609 610 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn, 611 &priv->tunnel_reg_id); 612 if (err) 613 goto tunnel_err; 614 615 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 616 if (!entry) { 617 err = -ENOMEM; 618 goto alloc_err; 619 } 620 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac)); 621 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac)); 622 entry->reg_id = reg_id; 623 624 hlist_add_head_rcu(&entry->hlist, 625 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); 626 627 return 0; 628 629 alloc_err: 630 if (priv->tunnel_reg_id) 631 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 632 tunnel_err: 633 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 634 635 steer_err: 636 mlx4_qp_release_range(dev, *qpn, 1); 637 638 qp_err: 639 mlx4_unregister_mac(dev, priv->port, mac); 640 return err; 641 } 642 643 static void mlx4_en_put_qp(struct mlx4_en_priv *priv) 644 { 645 struct mlx4_en_dev *mdev = priv->mdev; 646 struct mlx4_dev *dev = mdev->dev; 647 int qpn = priv->base_qpn; 648 u64 mac; 649 650 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 651 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 652 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 653 priv->dev->dev_addr); 654 mlx4_unregister_mac(dev, priv->port, mac); 655 } else { 656 struct mlx4_mac_entry *entry; 657 struct hlist_node *tmp; 658 struct hlist_head *bucket; 659 unsigned int i; 660 661 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 662 bucket = &priv->mac_hash[i]; 663 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 664 mac = mlx4_mac_to_u64(entry->mac); 665 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 666 entry->mac); 667 mlx4_en_uc_steer_release(priv, entry->mac, 668 qpn, entry->reg_id); 669 670 mlx4_unregister_mac(dev, priv->port, mac); 671 hlist_del_rcu(&entry->hlist); 672 kfree_rcu(entry, rcu); 673 } 674 } 675 676 if (priv->tunnel_reg_id) { 677 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 678 priv->tunnel_reg_id = 0; 679 } 680 681 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", 682 priv->port, qpn); 683 mlx4_qp_release_range(dev, qpn, 1); 684 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 685 } 686 } 687 688 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, 689 unsigned char *new_mac, unsigned char *prev_mac) 690 { 691 struct mlx4_en_dev *mdev = priv->mdev; 692 struct mlx4_dev *dev = mdev->dev; 693 int err = 0; 694 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac); 695 696 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { 697 struct hlist_head *bucket; 698 unsigned int mac_hash; 699 struct mlx4_mac_entry *entry; 700 struct hlist_node *tmp; 701 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac); 702 703 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; 704 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 705 if (ether_addr_equal_64bits(entry->mac, prev_mac)) { 706 mlx4_en_uc_steer_release(priv, entry->mac, 707 qpn, entry->reg_id); 708 mlx4_unregister_mac(dev, priv->port, 709 prev_mac_u64); 710 hlist_del_rcu(&entry->hlist); 711 synchronize_rcu(); 712 memcpy(entry->mac, new_mac, ETH_ALEN); 713 entry->reg_id = 0; 714 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; 715 hlist_add_head_rcu(&entry->hlist, 716 &priv->mac_hash[mac_hash]); 717 mlx4_register_mac(dev, priv->port, new_mac_u64); 718 err = mlx4_en_uc_steer_add(priv, new_mac, 719 &qpn, 720 &entry->reg_id); 721 if (err) 722 return err; 723 if (priv->tunnel_reg_id) { 724 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 725 priv->tunnel_reg_id = 0; 726 } 727 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn, 728 &priv->tunnel_reg_id); 729 return err; 730 } 731 } 732 return -EINVAL; 733 } 734 735 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); 736 } 737 738 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv, 739 unsigned char new_mac[ETH_ALEN + 2]) 740 { 741 int err = 0; 742 743 if (priv->port_up) { 744 /* Remove old MAC and insert the new one */ 745 err = mlx4_en_replace_mac(priv, priv->base_qpn, 746 new_mac, priv->current_mac); 747 if (err) 748 en_err(priv, "Failed changing HW MAC address\n"); 749 } else 750 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); 751 752 if (!err) 753 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac)); 754 755 return err; 756 } 757 758 static int mlx4_en_set_mac(struct net_device *dev, void *addr) 759 { 760 struct mlx4_en_priv *priv = netdev_priv(dev); 761 struct mlx4_en_dev *mdev = priv->mdev; 762 struct sockaddr *saddr = addr; 763 unsigned char new_mac[ETH_ALEN + 2]; 764 int err; 765 766 if (!is_valid_ether_addr(saddr->sa_data)) 767 return -EADDRNOTAVAIL; 768 769 mutex_lock(&mdev->state_lock); 770 memcpy(new_mac, saddr->sa_data, ETH_ALEN); 771 err = mlx4_en_do_set_mac(priv, new_mac); 772 if (!err) 773 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); 774 mutex_unlock(&mdev->state_lock); 775 776 return err; 777 } 778 779 static void mlx4_en_clear_list(struct net_device *dev) 780 { 781 struct mlx4_en_priv *priv = netdev_priv(dev); 782 struct mlx4_en_mc_list *tmp, *mc_to_del; 783 784 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { 785 list_del(&mc_to_del->list); 786 kfree(mc_to_del); 787 } 788 } 789 790 static void mlx4_en_cache_mclist(struct net_device *dev) 791 { 792 struct mlx4_en_priv *priv = netdev_priv(dev); 793 struct netdev_hw_addr *ha; 794 struct mlx4_en_mc_list *tmp; 795 796 mlx4_en_clear_list(dev); 797 netdev_for_each_mc_addr(ha, dev) { 798 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); 799 if (!tmp) { 800 mlx4_en_clear_list(dev); 801 return; 802 } 803 memcpy(tmp->addr, ha->addr, ETH_ALEN); 804 list_add_tail(&tmp->list, &priv->mc_list); 805 } 806 } 807 808 static void update_mclist_flags(struct mlx4_en_priv *priv, 809 struct list_head *dst, 810 struct list_head *src) 811 { 812 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; 813 bool found; 814 815 /* Find all the entries that should be removed from dst, 816 * These are the entries that are not found in src 817 */ 818 list_for_each_entry(dst_tmp, dst, list) { 819 found = false; 820 list_for_each_entry(src_tmp, src, list) { 821 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 822 found = true; 823 break; 824 } 825 } 826 if (!found) 827 dst_tmp->action = MCLIST_REM; 828 } 829 830 /* Add entries that exist in src but not in dst 831 * mark them as need to add 832 */ 833 list_for_each_entry(src_tmp, src, list) { 834 found = false; 835 list_for_each_entry(dst_tmp, dst, list) { 836 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 837 dst_tmp->action = MCLIST_NONE; 838 found = true; 839 break; 840 } 841 } 842 if (!found) { 843 new_mc = kmemdup(src_tmp, 844 sizeof(struct mlx4_en_mc_list), 845 GFP_KERNEL); 846 if (!new_mc) 847 return; 848 849 new_mc->action = MCLIST_ADD; 850 list_add_tail(&new_mc->list, dst); 851 } 852 } 853 } 854 855 static void mlx4_en_set_rx_mode(struct net_device *dev) 856 { 857 struct mlx4_en_priv *priv = netdev_priv(dev); 858 859 if (!priv->port_up) 860 return; 861 862 queue_work(priv->mdev->workqueue, &priv->rx_mode_task); 863 } 864 865 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, 866 struct mlx4_en_dev *mdev) 867 { 868 int err = 0; 869 870 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { 871 if (netif_msg_rx_status(priv)) 872 en_warn(priv, "Entering promiscuous mode\n"); 873 priv->flags |= MLX4_EN_FLAG_PROMISC; 874 875 /* Enable promiscouos mode */ 876 switch (mdev->dev->caps.steering_mode) { 877 case MLX4_STEERING_MODE_DEVICE_MANAGED: 878 err = mlx4_flow_steer_promisc_add(mdev->dev, 879 priv->port, 880 priv->base_qpn, 881 MLX4_FS_ALL_DEFAULT); 882 if (err) 883 en_err(priv, "Failed enabling promiscuous mode\n"); 884 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 885 break; 886 887 case MLX4_STEERING_MODE_B0: 888 err = mlx4_unicast_promisc_add(mdev->dev, 889 priv->base_qpn, 890 priv->port); 891 if (err) 892 en_err(priv, "Failed enabling unicast promiscuous mode\n"); 893 894 /* Add the default qp number as multicast 895 * promisc 896 */ 897 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 898 err = mlx4_multicast_promisc_add(mdev->dev, 899 priv->base_qpn, 900 priv->port); 901 if (err) 902 en_err(priv, "Failed enabling multicast promiscuous mode\n"); 903 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 904 } 905 break; 906 907 case MLX4_STEERING_MODE_A0: 908 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 909 priv->port, 910 priv->base_qpn, 911 1); 912 if (err) 913 en_err(priv, "Failed enabling promiscuous mode\n"); 914 break; 915 } 916 917 /* Disable port multicast filter (unconditionally) */ 918 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 919 0, MLX4_MCAST_DISABLE); 920 if (err) 921 en_err(priv, "Failed disabling multicast filter\n"); 922 } 923 } 924 925 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv, 926 struct mlx4_en_dev *mdev) 927 { 928 int err = 0; 929 930 if (netif_msg_rx_status(priv)) 931 en_warn(priv, "Leaving promiscuous mode\n"); 932 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 933 934 /* Disable promiscouos mode */ 935 switch (mdev->dev->caps.steering_mode) { 936 case MLX4_STEERING_MODE_DEVICE_MANAGED: 937 err = mlx4_flow_steer_promisc_remove(mdev->dev, 938 priv->port, 939 MLX4_FS_ALL_DEFAULT); 940 if (err) 941 en_err(priv, "Failed disabling promiscuous mode\n"); 942 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 943 break; 944 945 case MLX4_STEERING_MODE_B0: 946 err = mlx4_unicast_promisc_remove(mdev->dev, 947 priv->base_qpn, 948 priv->port); 949 if (err) 950 en_err(priv, "Failed disabling unicast promiscuous mode\n"); 951 /* Disable Multicast promisc */ 952 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 953 err = mlx4_multicast_promisc_remove(mdev->dev, 954 priv->base_qpn, 955 priv->port); 956 if (err) 957 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 958 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 959 } 960 break; 961 962 case MLX4_STEERING_MODE_A0: 963 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 964 priv->port, 965 priv->base_qpn, 0); 966 if (err) 967 en_err(priv, "Failed disabling promiscuous mode\n"); 968 break; 969 } 970 } 971 972 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, 973 struct net_device *dev, 974 struct mlx4_en_dev *mdev) 975 { 976 struct mlx4_en_mc_list *mclist, *tmp; 977 u64 mcast_addr = 0; 978 u8 mc_list[16] = {0}; 979 int err = 0; 980 981 /* Enable/disable the multicast filter according to IFF_ALLMULTI */ 982 if (dev->flags & IFF_ALLMULTI) { 983 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 984 0, MLX4_MCAST_DISABLE); 985 if (err) 986 en_err(priv, "Failed disabling multicast filter\n"); 987 988 /* Add the default qp number as multicast promisc */ 989 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 990 switch (mdev->dev->caps.steering_mode) { 991 case MLX4_STEERING_MODE_DEVICE_MANAGED: 992 err = mlx4_flow_steer_promisc_add(mdev->dev, 993 priv->port, 994 priv->base_qpn, 995 MLX4_FS_MC_DEFAULT); 996 break; 997 998 case MLX4_STEERING_MODE_B0: 999 err = mlx4_multicast_promisc_add(mdev->dev, 1000 priv->base_qpn, 1001 priv->port); 1002 break; 1003 1004 case MLX4_STEERING_MODE_A0: 1005 break; 1006 } 1007 if (err) 1008 en_err(priv, "Failed entering multicast promisc mode\n"); 1009 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 1010 } 1011 } else { 1012 /* Disable Multicast promisc */ 1013 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1014 switch (mdev->dev->caps.steering_mode) { 1015 case MLX4_STEERING_MODE_DEVICE_MANAGED: 1016 err = mlx4_flow_steer_promisc_remove(mdev->dev, 1017 priv->port, 1018 MLX4_FS_MC_DEFAULT); 1019 break; 1020 1021 case MLX4_STEERING_MODE_B0: 1022 err = mlx4_multicast_promisc_remove(mdev->dev, 1023 priv->base_qpn, 1024 priv->port); 1025 break; 1026 1027 case MLX4_STEERING_MODE_A0: 1028 break; 1029 } 1030 if (err) 1031 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 1032 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1033 } 1034 1035 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1036 0, MLX4_MCAST_DISABLE); 1037 if (err) 1038 en_err(priv, "Failed disabling multicast filter\n"); 1039 1040 /* Flush mcast filter and init it with broadcast address */ 1041 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, 1042 1, MLX4_MCAST_CONFIG); 1043 1044 /* Update multicast list - we cache all addresses so they won't 1045 * change while HW is updated holding the command semaphor */ 1046 netif_addr_lock_bh(dev); 1047 mlx4_en_cache_mclist(dev); 1048 netif_addr_unlock_bh(dev); 1049 list_for_each_entry(mclist, &priv->mc_list, list) { 1050 mcast_addr = mlx4_mac_to_u64(mclist->addr); 1051 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 1052 mcast_addr, 0, MLX4_MCAST_CONFIG); 1053 } 1054 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1055 0, MLX4_MCAST_ENABLE); 1056 if (err) 1057 en_err(priv, "Failed enabling multicast filter\n"); 1058 1059 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); 1060 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1061 if (mclist->action == MCLIST_REM) { 1062 /* detach this address and delete from list */ 1063 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1064 mc_list[5] = priv->port; 1065 err = mlx4_multicast_detach(mdev->dev, 1066 &priv->rss_map.indir_qp, 1067 mc_list, 1068 MLX4_PROT_ETH, 1069 mclist->reg_id); 1070 if (err) 1071 en_err(priv, "Fail to detach multicast address\n"); 1072 1073 if (mclist->tunnel_reg_id) { 1074 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id); 1075 if (err) 1076 en_err(priv, "Failed to detach multicast address\n"); 1077 } 1078 1079 /* remove from list */ 1080 list_del(&mclist->list); 1081 kfree(mclist); 1082 } else if (mclist->action == MCLIST_ADD) { 1083 /* attach the address */ 1084 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1085 /* needed for B0 steering support */ 1086 mc_list[5] = priv->port; 1087 err = mlx4_multicast_attach(mdev->dev, 1088 &priv->rss_map.indir_qp, 1089 mc_list, 1090 priv->port, 0, 1091 MLX4_PROT_ETH, 1092 &mclist->reg_id); 1093 if (err) 1094 en_err(priv, "Fail to attach multicast address\n"); 1095 1096 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn, 1097 &mclist->tunnel_reg_id); 1098 if (err) 1099 en_err(priv, "Failed to attach multicast address\n"); 1100 } 1101 } 1102 } 1103 } 1104 1105 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, 1106 struct net_device *dev, 1107 struct mlx4_en_dev *mdev) 1108 { 1109 struct netdev_hw_addr *ha; 1110 struct mlx4_mac_entry *entry; 1111 struct hlist_node *tmp; 1112 bool found; 1113 u64 mac; 1114 int err = 0; 1115 struct hlist_head *bucket; 1116 unsigned int i; 1117 int removed = 0; 1118 u32 prev_flags; 1119 1120 /* Note that we do not need to protect our mac_hash traversal with rcu, 1121 * since all modification code is protected by mdev->state_lock 1122 */ 1123 1124 /* find what to remove */ 1125 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1126 bucket = &priv->mac_hash[i]; 1127 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1128 found = false; 1129 netdev_for_each_uc_addr(ha, dev) { 1130 if (ether_addr_equal_64bits(entry->mac, 1131 ha->addr)) { 1132 found = true; 1133 break; 1134 } 1135 } 1136 1137 /* MAC address of the port is not in uc list */ 1138 if (ether_addr_equal_64bits(entry->mac, 1139 priv->current_mac)) 1140 found = true; 1141 1142 if (!found) { 1143 mac = mlx4_mac_to_u64(entry->mac); 1144 mlx4_en_uc_steer_release(priv, entry->mac, 1145 priv->base_qpn, 1146 entry->reg_id); 1147 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1148 1149 hlist_del_rcu(&entry->hlist); 1150 kfree_rcu(entry, rcu); 1151 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", 1152 entry->mac, priv->port); 1153 ++removed; 1154 } 1155 } 1156 } 1157 1158 /* if we didn't remove anything, there is no use in trying to add 1159 * again once we are in a forced promisc mode state 1160 */ 1161 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) 1162 return; 1163 1164 prev_flags = priv->flags; 1165 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 1166 1167 /* find what to add */ 1168 netdev_for_each_uc_addr(ha, dev) { 1169 found = false; 1170 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; 1171 hlist_for_each_entry(entry, bucket, hlist) { 1172 if (ether_addr_equal_64bits(entry->mac, ha->addr)) { 1173 found = true; 1174 break; 1175 } 1176 } 1177 1178 if (!found) { 1179 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1180 if (!entry) { 1181 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", 1182 ha->addr, priv->port); 1183 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1184 break; 1185 } 1186 mac = mlx4_mac_to_u64(ha->addr); 1187 memcpy(entry->mac, ha->addr, ETH_ALEN); 1188 err = mlx4_register_mac(mdev->dev, priv->port, mac); 1189 if (err < 0) { 1190 en_err(priv, "Failed registering MAC %pM on port %d: %d\n", 1191 ha->addr, priv->port, err); 1192 kfree(entry); 1193 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1194 break; 1195 } 1196 err = mlx4_en_uc_steer_add(priv, ha->addr, 1197 &priv->base_qpn, 1198 &entry->reg_id); 1199 if (err) { 1200 en_err(priv, "Failed adding MAC %pM on port %d: %d\n", 1201 ha->addr, priv->port, err); 1202 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1203 kfree(entry); 1204 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1205 break; 1206 } else { 1207 unsigned int mac_hash; 1208 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", 1209 ha->addr, priv->port); 1210 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; 1211 bucket = &priv->mac_hash[mac_hash]; 1212 hlist_add_head_rcu(&entry->hlist, bucket); 1213 } 1214 } 1215 } 1216 1217 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1218 en_warn(priv, "Forcing promiscuous mode on port:%d\n", 1219 priv->port); 1220 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1221 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", 1222 priv->port); 1223 } 1224 } 1225 1226 static void mlx4_en_do_set_rx_mode(struct work_struct *work) 1227 { 1228 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1229 rx_mode_task); 1230 struct mlx4_en_dev *mdev = priv->mdev; 1231 struct net_device *dev = priv->dev; 1232 1233 mutex_lock(&mdev->state_lock); 1234 if (!mdev->device_up) { 1235 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); 1236 goto out; 1237 } 1238 if (!priv->port_up) { 1239 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); 1240 goto out; 1241 } 1242 1243 if (!netif_carrier_ok(dev)) { 1244 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { 1245 if (priv->port_state.link_state) { 1246 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; 1247 netif_carrier_on(dev); 1248 en_dbg(LINK, priv, "Link Up\n"); 1249 } 1250 } 1251 } 1252 1253 if (dev->priv_flags & IFF_UNICAST_FLT) 1254 mlx4_en_do_uc_filter(priv, dev, mdev); 1255 1256 /* Promsicuous mode: disable all filters */ 1257 if ((dev->flags & IFF_PROMISC) || 1258 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { 1259 mlx4_en_set_promisc_mode(priv, mdev); 1260 goto out; 1261 } 1262 1263 /* Not in promiscuous mode */ 1264 if (priv->flags & MLX4_EN_FLAG_PROMISC) 1265 mlx4_en_clear_promisc_mode(priv, mdev); 1266 1267 mlx4_en_do_multicast(priv, dev, mdev); 1268 out: 1269 mutex_unlock(&mdev->state_lock); 1270 } 1271 1272 #ifdef CONFIG_NET_POLL_CONTROLLER 1273 static void mlx4_en_netpoll(struct net_device *dev) 1274 { 1275 struct mlx4_en_priv *priv = netdev_priv(dev); 1276 struct mlx4_en_cq *cq; 1277 int i; 1278 1279 for (i = 0; i < priv->rx_ring_num; i++) { 1280 cq = priv->rx_cq[i]; 1281 napi_schedule(&cq->napi); 1282 } 1283 } 1284 #endif 1285 1286 static void mlx4_en_tx_timeout(struct net_device *dev) 1287 { 1288 struct mlx4_en_priv *priv = netdev_priv(dev); 1289 struct mlx4_en_dev *mdev = priv->mdev; 1290 int i; 1291 1292 if (netif_msg_timer(priv)) 1293 en_warn(priv, "Tx timeout called on port:%d\n", priv->port); 1294 1295 for (i = 0; i < priv->tx_ring_num; i++) { 1296 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) 1297 continue; 1298 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", 1299 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn, 1300 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod); 1301 } 1302 1303 priv->port_stats.tx_timeout++; 1304 en_dbg(DRV, priv, "Scheduling watchdog\n"); 1305 queue_work(mdev->workqueue, &priv->watchdog_task); 1306 } 1307 1308 1309 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev) 1310 { 1311 struct mlx4_en_priv *priv = netdev_priv(dev); 1312 1313 spin_lock_bh(&priv->stats_lock); 1314 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats)); 1315 spin_unlock_bh(&priv->stats_lock); 1316 1317 return &priv->ret_stats; 1318 } 1319 1320 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1321 { 1322 struct mlx4_en_cq *cq; 1323 int i; 1324 1325 /* If we haven't received a specific coalescing setting 1326 * (module param), we set the moderation parameters as follows: 1327 * - moder_cnt is set to the number of mtu sized packets to 1328 * satisfy our coalescing target. 1329 * - moder_time is set to a fixed value. 1330 */ 1331 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1332 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1333 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1334 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1335 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1336 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1337 1338 /* Setup cq moderation params */ 1339 for (i = 0; i < priv->rx_ring_num; i++) { 1340 cq = priv->rx_cq[i]; 1341 cq->moder_cnt = priv->rx_frames; 1342 cq->moder_time = priv->rx_usecs; 1343 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1344 priv->last_moder_packets[i] = 0; 1345 priv->last_moder_bytes[i] = 0; 1346 } 1347 1348 for (i = 0; i < priv->tx_ring_num; i++) { 1349 cq = priv->tx_cq[i]; 1350 cq->moder_cnt = priv->tx_frames; 1351 cq->moder_time = priv->tx_usecs; 1352 } 1353 1354 /* Reset auto-moderation params */ 1355 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1356 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1357 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1358 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1359 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1360 priv->adaptive_rx_coal = 1; 1361 priv->last_moder_jiffies = 0; 1362 priv->last_moder_tx_packets = 0; 1363 } 1364 1365 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1366 { 1367 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1368 struct mlx4_en_cq *cq; 1369 unsigned long packets; 1370 unsigned long rate; 1371 unsigned long avg_pkt_size; 1372 unsigned long rx_packets; 1373 unsigned long rx_bytes; 1374 unsigned long rx_pkt_diff; 1375 int moder_time; 1376 int ring, err; 1377 1378 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1379 return; 1380 1381 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1382 spin_lock_bh(&priv->stats_lock); 1383 rx_packets = priv->rx_ring[ring]->packets; 1384 rx_bytes = priv->rx_ring[ring]->bytes; 1385 spin_unlock_bh(&priv->stats_lock); 1386 1387 rx_pkt_diff = ((unsigned long) (rx_packets - 1388 priv->last_moder_packets[ring])); 1389 packets = rx_pkt_diff; 1390 rate = packets * HZ / period; 1391 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1392 priv->last_moder_bytes[ring])) / packets : 0; 1393 1394 /* Apply auto-moderation only when packet rate 1395 * exceeds a rate that it matters */ 1396 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1397 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1398 if (rate < priv->pkt_rate_low) 1399 moder_time = priv->rx_usecs_low; 1400 else if (rate > priv->pkt_rate_high) 1401 moder_time = priv->rx_usecs_high; 1402 else 1403 moder_time = (rate - priv->pkt_rate_low) * 1404 (priv->rx_usecs_high - priv->rx_usecs_low) / 1405 (priv->pkt_rate_high - priv->pkt_rate_low) + 1406 priv->rx_usecs_low; 1407 } else { 1408 moder_time = priv->rx_usecs_low; 1409 } 1410 1411 if (moder_time != priv->last_moder_time[ring]) { 1412 priv->last_moder_time[ring] = moder_time; 1413 cq = priv->rx_cq[ring]; 1414 cq->moder_time = moder_time; 1415 cq->moder_cnt = priv->rx_frames; 1416 err = mlx4_en_set_cq_moder(priv, cq); 1417 if (err) 1418 en_err(priv, "Failed modifying moderation for cq:%d\n", 1419 ring); 1420 } 1421 priv->last_moder_packets[ring] = rx_packets; 1422 priv->last_moder_bytes[ring] = rx_bytes; 1423 } 1424 1425 priv->last_moder_jiffies = jiffies; 1426 } 1427 1428 static void mlx4_en_do_get_stats(struct work_struct *work) 1429 { 1430 struct delayed_work *delay = to_delayed_work(work); 1431 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1432 stats_task); 1433 struct mlx4_en_dev *mdev = priv->mdev; 1434 int err; 1435 1436 mutex_lock(&mdev->state_lock); 1437 if (mdev->device_up) { 1438 if (priv->port_up) { 1439 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1440 if (err) 1441 en_dbg(HW, priv, "Could not update stats\n"); 1442 1443 mlx4_en_auto_moderation(priv); 1444 } 1445 1446 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1447 } 1448 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1449 mlx4_en_do_set_mac(priv, priv->current_mac); 1450 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1451 } 1452 mutex_unlock(&mdev->state_lock); 1453 } 1454 1455 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1456 * periodically 1457 */ 1458 static void mlx4_en_service_task(struct work_struct *work) 1459 { 1460 struct delayed_work *delay = to_delayed_work(work); 1461 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1462 service_task); 1463 struct mlx4_en_dev *mdev = priv->mdev; 1464 1465 mutex_lock(&mdev->state_lock); 1466 if (mdev->device_up) { 1467 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1468 mlx4_en_ptp_overflow_check(mdev); 1469 1470 mlx4_en_recover_from_oom(priv); 1471 queue_delayed_work(mdev->workqueue, &priv->service_task, 1472 SERVICE_TASK_DELAY); 1473 } 1474 mutex_unlock(&mdev->state_lock); 1475 } 1476 1477 static void mlx4_en_linkstate(struct work_struct *work) 1478 { 1479 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1480 linkstate_task); 1481 struct mlx4_en_dev *mdev = priv->mdev; 1482 int linkstate = priv->link_state; 1483 1484 mutex_lock(&mdev->state_lock); 1485 /* If observable port state changed set carrier state and 1486 * report to system log */ 1487 if (priv->last_link_state != linkstate) { 1488 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1489 en_info(priv, "Link Down\n"); 1490 netif_carrier_off(priv->dev); 1491 } else { 1492 en_info(priv, "Link Up\n"); 1493 netif_carrier_on(priv->dev); 1494 } 1495 } 1496 priv->last_link_state = linkstate; 1497 mutex_unlock(&mdev->state_lock); 1498 } 1499 1500 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1501 { 1502 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx]; 1503 int numa_node = priv->mdev->dev->numa_node; 1504 1505 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL)) 1506 return -ENOMEM; 1507 1508 cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node), 1509 ring->affinity_mask); 1510 return 0; 1511 } 1512 1513 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1514 { 1515 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask); 1516 } 1517 1518 int mlx4_en_start_port(struct net_device *dev) 1519 { 1520 struct mlx4_en_priv *priv = netdev_priv(dev); 1521 struct mlx4_en_dev *mdev = priv->mdev; 1522 struct mlx4_en_cq *cq; 1523 struct mlx4_en_tx_ring *tx_ring; 1524 int rx_index = 0; 1525 int tx_index = 0; 1526 int err = 0; 1527 int i; 1528 int j; 1529 u8 mc_list[16] = {0}; 1530 1531 if (priv->port_up) { 1532 en_dbg(DRV, priv, "start port called while port already up\n"); 1533 return 0; 1534 } 1535 1536 INIT_LIST_HEAD(&priv->mc_list); 1537 INIT_LIST_HEAD(&priv->curr_list); 1538 INIT_LIST_HEAD(&priv->ethtool_list); 1539 memset(&priv->ethtool_rules[0], 0, 1540 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1541 1542 /* Calculate Rx buf size */ 1543 dev->mtu = min(dev->mtu, priv->max_mtu); 1544 mlx4_en_calc_rx_buf(dev); 1545 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1546 1547 /* Configure rx cq's and rings */ 1548 err = mlx4_en_activate_rx_rings(priv); 1549 if (err) { 1550 en_err(priv, "Failed to activate RX rings\n"); 1551 return err; 1552 } 1553 for (i = 0; i < priv->rx_ring_num; i++) { 1554 cq = priv->rx_cq[i]; 1555 1556 mlx4_en_cq_init_lock(cq); 1557 1558 err = mlx4_en_init_affinity_hint(priv, i); 1559 if (err) { 1560 en_err(priv, "Failed preparing IRQ affinity hint\n"); 1561 goto cq_err; 1562 } 1563 1564 err = mlx4_en_activate_cq(priv, cq, i); 1565 if (err) { 1566 en_err(priv, "Failed activating Rx CQ\n"); 1567 mlx4_en_free_affinity_hint(priv, i); 1568 goto cq_err; 1569 } 1570 1571 for (j = 0; j < cq->size; j++) { 1572 struct mlx4_cqe *cqe = NULL; 1573 1574 cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) + 1575 priv->cqe_factor; 1576 cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1577 } 1578 1579 err = mlx4_en_set_cq_moder(priv, cq); 1580 if (err) { 1581 en_err(priv, "Failed setting cq moderation parameters\n"); 1582 mlx4_en_deactivate_cq(priv, cq); 1583 mlx4_en_free_affinity_hint(priv, i); 1584 goto cq_err; 1585 } 1586 mlx4_en_arm_cq(priv, cq); 1587 priv->rx_ring[i]->cqn = cq->mcq.cqn; 1588 ++rx_index; 1589 } 1590 1591 /* Set qp number */ 1592 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1593 err = mlx4_en_get_qp(priv); 1594 if (err) { 1595 en_err(priv, "Failed getting eth qp\n"); 1596 goto cq_err; 1597 } 1598 mdev->mac_removed[priv->port] = 0; 1599 1600 err = mlx4_en_config_rss_steer(priv); 1601 if (err) { 1602 en_err(priv, "Failed configuring rss steering\n"); 1603 goto mac_err; 1604 } 1605 1606 err = mlx4_en_create_drop_qp(priv); 1607 if (err) 1608 goto rss_err; 1609 1610 /* Configure tx cq's and rings */ 1611 for (i = 0; i < priv->tx_ring_num; i++) { 1612 /* Configure cq */ 1613 cq = priv->tx_cq[i]; 1614 err = mlx4_en_activate_cq(priv, cq, i); 1615 if (err) { 1616 en_err(priv, "Failed allocating Tx CQ\n"); 1617 goto tx_err; 1618 } 1619 err = mlx4_en_set_cq_moder(priv, cq); 1620 if (err) { 1621 en_err(priv, "Failed setting cq moderation parameters\n"); 1622 mlx4_en_deactivate_cq(priv, cq); 1623 goto tx_err; 1624 } 1625 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i); 1626 cq->buf->wqe_index = cpu_to_be16(0xffff); 1627 1628 /* Configure ring */ 1629 tx_ring = priv->tx_ring[i]; 1630 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, 1631 i / priv->num_tx_rings_p_up); 1632 if (err) { 1633 en_err(priv, "Failed allocating Tx ring\n"); 1634 mlx4_en_deactivate_cq(priv, cq); 1635 goto tx_err; 1636 } 1637 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1638 1639 /* Arm CQ for TX completions */ 1640 mlx4_en_arm_cq(priv, cq); 1641 1642 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1643 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1644 *((u32 *) (tx_ring->buf + j)) = 0xffffffff; 1645 ++tx_index; 1646 } 1647 1648 /* Configure port */ 1649 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1650 priv->rx_skb_size + ETH_FCS_LEN, 1651 priv->prof->tx_pause, 1652 priv->prof->tx_ppp, 1653 priv->prof->rx_pause, 1654 priv->prof->rx_ppp); 1655 if (err) { 1656 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1657 priv->port, err); 1658 goto tx_err; 1659 } 1660 /* Set default qp number */ 1661 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1662 if (err) { 1663 en_err(priv, "Failed setting default qp numbers\n"); 1664 goto tx_err; 1665 } 1666 1667 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 1668 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 1669 if (err) { 1670 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 1671 err); 1672 goto tx_err; 1673 } 1674 } 1675 1676 /* Init port */ 1677 en_dbg(HW, priv, "Initializing port\n"); 1678 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1679 if (err) { 1680 en_err(priv, "Failed Initializing port\n"); 1681 goto tx_err; 1682 } 1683 1684 /* Attach rx QP to bradcast address */ 1685 eth_broadcast_addr(&mc_list[10]); 1686 mc_list[5] = priv->port; /* needed for B0 steering support */ 1687 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1688 priv->port, 0, MLX4_PROT_ETH, 1689 &priv->broadcast_id)) 1690 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1691 1692 /* Must redo promiscuous mode setup. */ 1693 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1694 1695 /* Schedule multicast task to populate multicast list */ 1696 queue_work(mdev->workqueue, &priv->rx_mode_task); 1697 1698 #ifdef CONFIG_MLX4_EN_VXLAN 1699 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 1700 vxlan_get_rx_port(dev); 1701 #endif 1702 priv->port_up = true; 1703 netif_tx_start_all_queues(dev); 1704 netif_device_attach(dev); 1705 1706 return 0; 1707 1708 tx_err: 1709 while (tx_index--) { 1710 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]); 1711 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]); 1712 } 1713 mlx4_en_destroy_drop_qp(priv); 1714 rss_err: 1715 mlx4_en_release_rss_steer(priv); 1716 mac_err: 1717 mlx4_en_put_qp(priv); 1718 cq_err: 1719 while (rx_index--) { 1720 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); 1721 mlx4_en_free_affinity_hint(priv, rx_index); 1722 } 1723 for (i = 0; i < priv->rx_ring_num; i++) 1724 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1725 1726 return err; /* need to close devices */ 1727 } 1728 1729 1730 void mlx4_en_stop_port(struct net_device *dev, int detach) 1731 { 1732 struct mlx4_en_priv *priv = netdev_priv(dev); 1733 struct mlx4_en_dev *mdev = priv->mdev; 1734 struct mlx4_en_mc_list *mclist, *tmp; 1735 struct ethtool_flow_id *flow, *tmp_flow; 1736 int i; 1737 u8 mc_list[16] = {0}; 1738 1739 if (!priv->port_up) { 1740 en_dbg(DRV, priv, "stop port called while port already down\n"); 1741 return; 1742 } 1743 1744 /* close port*/ 1745 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1746 1747 /* Synchronize with tx routine */ 1748 netif_tx_lock_bh(dev); 1749 if (detach) 1750 netif_device_detach(dev); 1751 netif_tx_stop_all_queues(dev); 1752 netif_tx_unlock_bh(dev); 1753 1754 netif_tx_disable(dev); 1755 1756 /* Set port as not active */ 1757 priv->port_up = false; 1758 1759 /* Promsicuous mode */ 1760 if (mdev->dev->caps.steering_mode == 1761 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1762 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | 1763 MLX4_EN_FLAG_MC_PROMISC); 1764 mlx4_flow_steer_promisc_remove(mdev->dev, 1765 priv->port, 1766 MLX4_FS_ALL_DEFAULT); 1767 mlx4_flow_steer_promisc_remove(mdev->dev, 1768 priv->port, 1769 MLX4_FS_MC_DEFAULT); 1770 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { 1771 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 1772 1773 /* Disable promiscouos mode */ 1774 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, 1775 priv->port); 1776 1777 /* Disable Multicast promisc */ 1778 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1779 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, 1780 priv->port); 1781 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1782 } 1783 } 1784 1785 /* Detach All multicasts */ 1786 eth_broadcast_addr(&mc_list[10]); 1787 mc_list[5] = priv->port; /* needed for B0 steering support */ 1788 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1789 MLX4_PROT_ETH, priv->broadcast_id); 1790 list_for_each_entry(mclist, &priv->curr_list, list) { 1791 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1792 mc_list[5] = priv->port; 1793 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, 1794 mc_list, MLX4_PROT_ETH, mclist->reg_id); 1795 if (mclist->tunnel_reg_id) 1796 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id); 1797 } 1798 mlx4_en_clear_list(dev); 1799 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1800 list_del(&mclist->list); 1801 kfree(mclist); 1802 } 1803 1804 /* Flush multicast filter */ 1805 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); 1806 1807 /* Remove flow steering rules for the port*/ 1808 if (mdev->dev->caps.steering_mode == 1809 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1810 ASSERT_RTNL(); 1811 list_for_each_entry_safe(flow, tmp_flow, 1812 &priv->ethtool_list, list) { 1813 mlx4_flow_detach(mdev->dev, flow->id); 1814 list_del(&flow->list); 1815 } 1816 } 1817 1818 mlx4_en_destroy_drop_qp(priv); 1819 1820 /* Free TX Rings */ 1821 for (i = 0; i < priv->tx_ring_num; i++) { 1822 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]); 1823 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]); 1824 } 1825 msleep(10); 1826 1827 for (i = 0; i < priv->tx_ring_num; i++) 1828 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]); 1829 1830 /* Free RSS qps */ 1831 mlx4_en_release_rss_steer(priv); 1832 1833 /* Unregister Mac address for the port */ 1834 mlx4_en_put_qp(priv); 1835 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN)) 1836 mdev->mac_removed[priv->port] = 1; 1837 1838 /* Free RX Rings */ 1839 for (i = 0; i < priv->rx_ring_num; i++) { 1840 struct mlx4_en_cq *cq = priv->rx_cq[i]; 1841 1842 local_bh_disable(); 1843 while (!mlx4_en_cq_lock_napi(cq)) { 1844 pr_info("CQ %d locked\n", i); 1845 mdelay(1); 1846 } 1847 local_bh_enable(); 1848 1849 napi_synchronize(&cq->napi); 1850 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1851 mlx4_en_deactivate_cq(priv, cq); 1852 1853 mlx4_en_free_affinity_hint(priv, i); 1854 } 1855 } 1856 1857 static void mlx4_en_restart(struct work_struct *work) 1858 { 1859 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1860 watchdog_task); 1861 struct mlx4_en_dev *mdev = priv->mdev; 1862 struct net_device *dev = priv->dev; 1863 1864 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1865 1866 mutex_lock(&mdev->state_lock); 1867 if (priv->port_up) { 1868 mlx4_en_stop_port(dev, 1); 1869 if (mlx4_en_start_port(dev)) 1870 en_err(priv, "Failed restarting port %d\n", priv->port); 1871 } 1872 mutex_unlock(&mdev->state_lock); 1873 } 1874 1875 static void mlx4_en_clear_stats(struct net_device *dev) 1876 { 1877 struct mlx4_en_priv *priv = netdev_priv(dev); 1878 struct mlx4_en_dev *mdev = priv->mdev; 1879 int i; 1880 1881 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1882 en_dbg(HW, priv, "Failed dumping statistics\n"); 1883 1884 memset(&priv->stats, 0, sizeof(priv->stats)); 1885 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1886 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1887 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1888 memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats)); 1889 memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats)); 1890 memset(&priv->rx_priority_flowstats, 0, 1891 sizeof(priv->rx_priority_flowstats)); 1892 memset(&priv->tx_priority_flowstats, 0, 1893 sizeof(priv->tx_priority_flowstats)); 1894 1895 for (i = 0; i < priv->tx_ring_num; i++) { 1896 priv->tx_ring[i]->bytes = 0; 1897 priv->tx_ring[i]->packets = 0; 1898 priv->tx_ring[i]->tx_csum = 0; 1899 } 1900 for (i = 0; i < priv->rx_ring_num; i++) { 1901 priv->rx_ring[i]->bytes = 0; 1902 priv->rx_ring[i]->packets = 0; 1903 priv->rx_ring[i]->csum_ok = 0; 1904 priv->rx_ring[i]->csum_none = 0; 1905 priv->rx_ring[i]->csum_complete = 0; 1906 } 1907 } 1908 1909 static int mlx4_en_open(struct net_device *dev) 1910 { 1911 struct mlx4_en_priv *priv = netdev_priv(dev); 1912 struct mlx4_en_dev *mdev = priv->mdev; 1913 int err = 0; 1914 1915 mutex_lock(&mdev->state_lock); 1916 1917 if (!mdev->device_up) { 1918 en_err(priv, "Cannot open - device down/disabled\n"); 1919 err = -EBUSY; 1920 goto out; 1921 } 1922 1923 /* Reset HW statistics and SW counters */ 1924 mlx4_en_clear_stats(dev); 1925 1926 err = mlx4_en_start_port(dev); 1927 if (err) 1928 en_err(priv, "Failed starting port:%d\n", priv->port); 1929 1930 out: 1931 mutex_unlock(&mdev->state_lock); 1932 return err; 1933 } 1934 1935 1936 static int mlx4_en_close(struct net_device *dev) 1937 { 1938 struct mlx4_en_priv *priv = netdev_priv(dev); 1939 struct mlx4_en_dev *mdev = priv->mdev; 1940 1941 en_dbg(IFDOWN, priv, "Close port called\n"); 1942 1943 mutex_lock(&mdev->state_lock); 1944 1945 mlx4_en_stop_port(dev, 0); 1946 netif_carrier_off(dev); 1947 1948 mutex_unlock(&mdev->state_lock); 1949 return 0; 1950 } 1951 1952 void mlx4_en_free_resources(struct mlx4_en_priv *priv) 1953 { 1954 int i; 1955 1956 #ifdef CONFIG_RFS_ACCEL 1957 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap); 1958 priv->dev->rx_cpu_rmap = NULL; 1959 #endif 1960 1961 for (i = 0; i < priv->tx_ring_num; i++) { 1962 if (priv->tx_ring && priv->tx_ring[i]) 1963 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 1964 if (priv->tx_cq && priv->tx_cq[i]) 1965 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 1966 } 1967 1968 for (i = 0; i < priv->rx_ring_num; i++) { 1969 if (priv->rx_ring[i]) 1970 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 1971 priv->prof->rx_ring_size, priv->stride); 1972 if (priv->rx_cq[i]) 1973 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 1974 } 1975 1976 if (priv->base_tx_qpn) { 1977 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num); 1978 priv->base_tx_qpn = 0; 1979 } 1980 } 1981 1982 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 1983 { 1984 struct mlx4_en_port_profile *prof = priv->prof; 1985 int i; 1986 int node; 1987 1988 /* Create tx Rings */ 1989 for (i = 0; i < priv->tx_ring_num; i++) { 1990 node = cpu_to_node(i % num_online_cpus()); 1991 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 1992 prof->tx_ring_size, i, TX, node)) 1993 goto err; 1994 1995 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], 1996 prof->tx_ring_size, TXBB_SIZE, 1997 node, i)) 1998 goto err; 1999 } 2000 2001 /* Create rx Rings */ 2002 for (i = 0; i < priv->rx_ring_num; i++) { 2003 node = cpu_to_node(i % num_online_cpus()); 2004 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 2005 prof->rx_ring_size, i, RX, node)) 2006 goto err; 2007 2008 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 2009 prof->rx_ring_size, priv->stride, 2010 node)) 2011 goto err; 2012 } 2013 2014 #ifdef CONFIG_RFS_ACCEL 2015 if (priv->mdev->dev->caps.comp_pool) { 2016 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool); 2017 if (!priv->dev->rx_cpu_rmap) 2018 goto err; 2019 } 2020 #endif 2021 2022 return 0; 2023 2024 err: 2025 en_err(priv, "Failed to allocate NIC resources\n"); 2026 for (i = 0; i < priv->rx_ring_num; i++) { 2027 if (priv->rx_ring[i]) 2028 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2029 prof->rx_ring_size, 2030 priv->stride); 2031 if (priv->rx_cq[i]) 2032 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2033 } 2034 for (i = 0; i < priv->tx_ring_num; i++) { 2035 if (priv->tx_ring[i]) 2036 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2037 if (priv->tx_cq[i]) 2038 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2039 } 2040 return -ENOMEM; 2041 } 2042 2043 2044 void mlx4_en_destroy_netdev(struct net_device *dev) 2045 { 2046 struct mlx4_en_priv *priv = netdev_priv(dev); 2047 struct mlx4_en_dev *mdev = priv->mdev; 2048 2049 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2050 2051 /* Unregister device - this will close the port if it was up */ 2052 if (priv->registered) 2053 unregister_netdev(dev); 2054 2055 if (priv->allocated) 2056 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2057 2058 cancel_delayed_work(&priv->stats_task); 2059 cancel_delayed_work(&priv->service_task); 2060 /* flush any pending task for this netdev */ 2061 flush_workqueue(mdev->workqueue); 2062 2063 /* Detach the netdev so tasks would not attempt to access it */ 2064 mutex_lock(&mdev->state_lock); 2065 mdev->pndev[priv->port] = NULL; 2066 mdev->upper[priv->port] = NULL; 2067 mutex_unlock(&mdev->state_lock); 2068 2069 mlx4_en_free_resources(priv); 2070 2071 kfree(priv->tx_ring); 2072 kfree(priv->tx_cq); 2073 2074 free_netdev(dev); 2075 } 2076 2077 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2078 { 2079 struct mlx4_en_priv *priv = netdev_priv(dev); 2080 struct mlx4_en_dev *mdev = priv->mdev; 2081 int err = 0; 2082 2083 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2084 dev->mtu, new_mtu); 2085 2086 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 2087 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 2088 return -EPERM; 2089 } 2090 dev->mtu = new_mtu; 2091 2092 if (netif_running(dev)) { 2093 mutex_lock(&mdev->state_lock); 2094 if (!mdev->device_up) { 2095 /* NIC is probably restarting - let watchdog task reset 2096 * the port */ 2097 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2098 } else { 2099 mlx4_en_stop_port(dev, 1); 2100 err = mlx4_en_start_port(dev); 2101 if (err) { 2102 en_err(priv, "Failed restarting port:%d\n", 2103 priv->port); 2104 queue_work(mdev->workqueue, &priv->watchdog_task); 2105 } 2106 } 2107 mutex_unlock(&mdev->state_lock); 2108 } 2109 return 0; 2110 } 2111 2112 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2113 { 2114 struct mlx4_en_priv *priv = netdev_priv(dev); 2115 struct mlx4_en_dev *mdev = priv->mdev; 2116 struct hwtstamp_config config; 2117 2118 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2119 return -EFAULT; 2120 2121 /* reserved for future extensions */ 2122 if (config.flags) 2123 return -EINVAL; 2124 2125 /* device doesn't support time stamping */ 2126 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2127 return -EINVAL; 2128 2129 /* TX HW timestamp */ 2130 switch (config.tx_type) { 2131 case HWTSTAMP_TX_OFF: 2132 case HWTSTAMP_TX_ON: 2133 break; 2134 default: 2135 return -ERANGE; 2136 } 2137 2138 /* RX HW timestamp */ 2139 switch (config.rx_filter) { 2140 case HWTSTAMP_FILTER_NONE: 2141 break; 2142 case HWTSTAMP_FILTER_ALL: 2143 case HWTSTAMP_FILTER_SOME: 2144 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2145 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2146 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2147 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2148 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2149 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2150 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2151 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2152 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2153 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2154 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2155 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2156 config.rx_filter = HWTSTAMP_FILTER_ALL; 2157 break; 2158 default: 2159 return -ERANGE; 2160 } 2161 2162 if (mlx4_en_reset_config(dev, config, dev->features)) { 2163 config.tx_type = HWTSTAMP_TX_OFF; 2164 config.rx_filter = HWTSTAMP_FILTER_NONE; 2165 } 2166 2167 return copy_to_user(ifr->ifr_data, &config, 2168 sizeof(config)) ? -EFAULT : 0; 2169 } 2170 2171 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2172 { 2173 struct mlx4_en_priv *priv = netdev_priv(dev); 2174 2175 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2176 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2177 } 2178 2179 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2180 { 2181 switch (cmd) { 2182 case SIOCSHWTSTAMP: 2183 return mlx4_en_hwtstamp_set(dev, ifr); 2184 case SIOCGHWTSTAMP: 2185 return mlx4_en_hwtstamp_get(dev, ifr); 2186 default: 2187 return -EOPNOTSUPP; 2188 } 2189 } 2190 2191 static int mlx4_en_set_features(struct net_device *netdev, 2192 netdev_features_t features) 2193 { 2194 struct mlx4_en_priv *priv = netdev_priv(netdev); 2195 bool reset = false; 2196 int ret = 0; 2197 2198 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) { 2199 en_info(priv, "Turn %s RX-FCS\n", 2200 (features & NETIF_F_RXFCS) ? "ON" : "OFF"); 2201 reset = true; 2202 } 2203 2204 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) { 2205 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0; 2206 2207 en_info(priv, "Turn %s RX-ALL\n", 2208 ignore_fcs_value ? "ON" : "OFF"); 2209 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev, 2210 priv->port, ignore_fcs_value); 2211 if (ret) 2212 return ret; 2213 } 2214 2215 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 2216 en_info(priv, "Turn %s RX vlan strip offload\n", 2217 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF"); 2218 reset = true; 2219 } 2220 2221 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX)) 2222 en_info(priv, "Turn %s TX vlan strip offload\n", 2223 (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF"); 2224 2225 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) { 2226 en_info(priv, "Turn %s loopback\n", 2227 (features & NETIF_F_LOOPBACK) ? "ON" : "OFF"); 2228 mlx4_en_update_loopback_state(netdev, features); 2229 } 2230 2231 if (reset) { 2232 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config, 2233 features); 2234 if (ret) 2235 return ret; 2236 } 2237 2238 return 0; 2239 } 2240 2241 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2242 { 2243 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2244 struct mlx4_en_dev *mdev = en_priv->mdev; 2245 u64 mac_u64 = mlx4_mac_to_u64(mac); 2246 2247 if (!is_valid_ether_addr(mac)) 2248 return -EINVAL; 2249 2250 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2251 } 2252 2253 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) 2254 { 2255 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2256 struct mlx4_en_dev *mdev = en_priv->mdev; 2257 2258 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos); 2259 } 2260 2261 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, 2262 int max_tx_rate) 2263 { 2264 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2265 struct mlx4_en_dev *mdev = en_priv->mdev; 2266 2267 return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate, 2268 max_tx_rate); 2269 } 2270 2271 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2272 { 2273 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2274 struct mlx4_en_dev *mdev = en_priv->mdev; 2275 2276 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2277 } 2278 2279 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2280 { 2281 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2282 struct mlx4_en_dev *mdev = en_priv->mdev; 2283 2284 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2285 } 2286 2287 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2288 { 2289 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2290 struct mlx4_en_dev *mdev = en_priv->mdev; 2291 2292 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2293 } 2294 2295 #define PORT_ID_BYTE_LEN 8 2296 static int mlx4_en_get_phys_port_id(struct net_device *dev, 2297 struct netdev_phys_item_id *ppid) 2298 { 2299 struct mlx4_en_priv *priv = netdev_priv(dev); 2300 struct mlx4_dev *mdev = priv->mdev->dev; 2301 int i; 2302 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2303 2304 if (!phys_port_id) 2305 return -EOPNOTSUPP; 2306 2307 ppid->id_len = sizeof(phys_port_id); 2308 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2309 ppid->id[i] = phys_port_id & 0xff; 2310 phys_port_id >>= 8; 2311 } 2312 return 0; 2313 } 2314 2315 #ifdef CONFIG_MLX4_EN_VXLAN 2316 static void mlx4_en_add_vxlan_offloads(struct work_struct *work) 2317 { 2318 int ret; 2319 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2320 vxlan_add_task); 2321 2322 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port); 2323 if (ret) 2324 goto out; 2325 2326 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2327 VXLAN_STEER_BY_OUTER_MAC, 1); 2328 out: 2329 if (ret) { 2330 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2331 return; 2332 } 2333 2334 /* set offloads */ 2335 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2336 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL; 2337 priv->dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; 2338 priv->dev->features |= NETIF_F_GSO_UDP_TUNNEL; 2339 } 2340 2341 static void mlx4_en_del_vxlan_offloads(struct work_struct *work) 2342 { 2343 int ret; 2344 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2345 vxlan_del_task); 2346 /* unset offloads */ 2347 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2348 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL); 2349 priv->dev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL; 2350 priv->dev->features &= ~NETIF_F_GSO_UDP_TUNNEL; 2351 2352 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2353 VXLAN_STEER_BY_OUTER_MAC, 0); 2354 if (ret) 2355 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2356 2357 priv->vxlan_port = 0; 2358 } 2359 2360 static void mlx4_en_add_vxlan_port(struct net_device *dev, 2361 sa_family_t sa_family, __be16 port) 2362 { 2363 struct mlx4_en_priv *priv = netdev_priv(dev); 2364 __be16 current_port; 2365 2366 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2367 return; 2368 2369 if (sa_family == AF_INET6) 2370 return; 2371 2372 current_port = priv->vxlan_port; 2373 if (current_port && current_port != port) { 2374 en_warn(priv, "vxlan port %d configured, can't add port %d\n", 2375 ntohs(current_port), ntohs(port)); 2376 return; 2377 } 2378 2379 priv->vxlan_port = port; 2380 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task); 2381 } 2382 2383 static void mlx4_en_del_vxlan_port(struct net_device *dev, 2384 sa_family_t sa_family, __be16 port) 2385 { 2386 struct mlx4_en_priv *priv = netdev_priv(dev); 2387 __be16 current_port; 2388 2389 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2390 return; 2391 2392 if (sa_family == AF_INET6) 2393 return; 2394 2395 current_port = priv->vxlan_port; 2396 if (current_port != port) { 2397 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port)); 2398 return; 2399 } 2400 2401 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task); 2402 } 2403 2404 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb, 2405 struct net_device *dev, 2406 netdev_features_t features) 2407 { 2408 features = vlan_features_check(skb, features); 2409 return vxlan_features_check(skb, features); 2410 } 2411 #endif 2412 2413 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate) 2414 { 2415 struct mlx4_en_priv *priv = netdev_priv(dev); 2416 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index]; 2417 struct mlx4_update_qp_params params; 2418 int err; 2419 2420 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT)) 2421 return -EOPNOTSUPP; 2422 2423 /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */ 2424 if (maxrate >> 12) { 2425 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS; 2426 params.rate_val = maxrate / 1000; 2427 } else if (maxrate) { 2428 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS; 2429 params.rate_val = maxrate; 2430 } else { /* zero serves to revoke the QP rate-limitation */ 2431 params.rate_unit = 0; 2432 params.rate_val = 0; 2433 } 2434 2435 err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT, 2436 ¶ms); 2437 return err; 2438 } 2439 2440 static const struct net_device_ops mlx4_netdev_ops = { 2441 .ndo_open = mlx4_en_open, 2442 .ndo_stop = mlx4_en_close, 2443 .ndo_start_xmit = mlx4_en_xmit, 2444 .ndo_select_queue = mlx4_en_select_queue, 2445 .ndo_get_stats = mlx4_en_get_stats, 2446 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2447 .ndo_set_mac_address = mlx4_en_set_mac, 2448 .ndo_validate_addr = eth_validate_addr, 2449 .ndo_change_mtu = mlx4_en_change_mtu, 2450 .ndo_do_ioctl = mlx4_en_ioctl, 2451 .ndo_tx_timeout = mlx4_en_tx_timeout, 2452 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2453 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2454 #ifdef CONFIG_NET_POLL_CONTROLLER 2455 .ndo_poll_controller = mlx4_en_netpoll, 2456 #endif 2457 .ndo_set_features = mlx4_en_set_features, 2458 .ndo_setup_tc = mlx4_en_setup_tc, 2459 #ifdef CONFIG_RFS_ACCEL 2460 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2461 #endif 2462 #ifdef CONFIG_NET_RX_BUSY_POLL 2463 .ndo_busy_poll = mlx4_en_low_latency_recv, 2464 #endif 2465 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2466 #ifdef CONFIG_MLX4_EN_VXLAN 2467 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2468 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2469 .ndo_features_check = mlx4_en_features_check, 2470 #endif 2471 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2472 }; 2473 2474 static const struct net_device_ops mlx4_netdev_ops_master = { 2475 .ndo_open = mlx4_en_open, 2476 .ndo_stop = mlx4_en_close, 2477 .ndo_start_xmit = mlx4_en_xmit, 2478 .ndo_select_queue = mlx4_en_select_queue, 2479 .ndo_get_stats = mlx4_en_get_stats, 2480 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2481 .ndo_set_mac_address = mlx4_en_set_mac, 2482 .ndo_validate_addr = eth_validate_addr, 2483 .ndo_change_mtu = mlx4_en_change_mtu, 2484 .ndo_tx_timeout = mlx4_en_tx_timeout, 2485 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2486 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2487 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2488 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2489 .ndo_set_vf_rate = mlx4_en_set_vf_rate, 2490 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2491 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2492 .ndo_get_vf_config = mlx4_en_get_vf_config, 2493 #ifdef CONFIG_NET_POLL_CONTROLLER 2494 .ndo_poll_controller = mlx4_en_netpoll, 2495 #endif 2496 .ndo_set_features = mlx4_en_set_features, 2497 .ndo_setup_tc = mlx4_en_setup_tc, 2498 #ifdef CONFIG_RFS_ACCEL 2499 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2500 #endif 2501 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2502 #ifdef CONFIG_MLX4_EN_VXLAN 2503 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2504 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2505 .ndo_features_check = mlx4_en_features_check, 2506 #endif 2507 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2508 }; 2509 2510 struct mlx4_en_bond { 2511 struct work_struct work; 2512 struct mlx4_en_priv *priv; 2513 int is_bonded; 2514 struct mlx4_port_map port_map; 2515 }; 2516 2517 static void mlx4_en_bond_work(struct work_struct *work) 2518 { 2519 struct mlx4_en_bond *bond = container_of(work, 2520 struct mlx4_en_bond, 2521 work); 2522 int err = 0; 2523 struct mlx4_dev *dev = bond->priv->mdev->dev; 2524 2525 if (bond->is_bonded) { 2526 if (!mlx4_is_bonded(dev)) { 2527 err = mlx4_bond(dev); 2528 if (err) 2529 en_err(bond->priv, "Fail to bond device\n"); 2530 } 2531 if (!err) { 2532 err = mlx4_port_map_set(dev, &bond->port_map); 2533 if (err) 2534 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n", 2535 bond->port_map.port1, 2536 bond->port_map.port2, 2537 err); 2538 } 2539 } else if (mlx4_is_bonded(dev)) { 2540 err = mlx4_unbond(dev); 2541 if (err) 2542 en_err(bond->priv, "Fail to unbond device\n"); 2543 } 2544 dev_put(bond->priv->dev); 2545 kfree(bond); 2546 } 2547 2548 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded, 2549 u8 v2p_p1, u8 v2p_p2) 2550 { 2551 struct mlx4_en_bond *bond = NULL; 2552 2553 bond = kzalloc(sizeof(*bond), GFP_ATOMIC); 2554 if (!bond) 2555 return -ENOMEM; 2556 2557 INIT_WORK(&bond->work, mlx4_en_bond_work); 2558 bond->priv = priv; 2559 bond->is_bonded = is_bonded; 2560 bond->port_map.port1 = v2p_p1; 2561 bond->port_map.port2 = v2p_p2; 2562 dev_hold(priv->dev); 2563 queue_work(priv->mdev->workqueue, &bond->work); 2564 return 0; 2565 } 2566 2567 int mlx4_en_netdev_event(struct notifier_block *this, 2568 unsigned long event, void *ptr) 2569 { 2570 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 2571 u8 port = 0; 2572 struct mlx4_en_dev *mdev; 2573 struct mlx4_dev *dev; 2574 int i, num_eth_ports = 0; 2575 bool do_bond = true; 2576 struct mlx4_en_priv *priv; 2577 u8 v2p_port1 = 0; 2578 u8 v2p_port2 = 0; 2579 2580 if (!net_eq(dev_net(ndev), &init_net)) 2581 return NOTIFY_DONE; 2582 2583 mdev = container_of(this, struct mlx4_en_dev, nb); 2584 dev = mdev->dev; 2585 2586 /* Go into this mode only when two network devices set on two ports 2587 * of the same mlx4 device are slaves of the same bonding master 2588 */ 2589 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { 2590 ++num_eth_ports; 2591 if (!port && (mdev->pndev[i] == ndev)) 2592 port = i; 2593 mdev->upper[i] = mdev->pndev[i] ? 2594 netdev_master_upper_dev_get(mdev->pndev[i]) : NULL; 2595 /* condition not met: network device is a slave */ 2596 if (!mdev->upper[i]) 2597 do_bond = false; 2598 if (num_eth_ports < 2) 2599 continue; 2600 /* condition not met: same master */ 2601 if (mdev->upper[i] != mdev->upper[i-1]) 2602 do_bond = false; 2603 } 2604 /* condition not met: 2 salves */ 2605 do_bond = (num_eth_ports == 2) ? do_bond : false; 2606 2607 /* handle only events that come with enough info */ 2608 if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port) 2609 return NOTIFY_DONE; 2610 2611 priv = netdev_priv(ndev); 2612 if (do_bond) { 2613 struct netdev_notifier_bonding_info *notifier_info = ptr; 2614 struct netdev_bonding_info *bonding_info = 2615 ¬ifier_info->bonding_info; 2616 2617 /* required mode 1, 2 or 4 */ 2618 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) && 2619 (bonding_info->master.bond_mode != BOND_MODE_XOR) && 2620 (bonding_info->master.bond_mode != BOND_MODE_8023AD)) 2621 do_bond = false; 2622 2623 /* require exactly 2 slaves */ 2624 if (bonding_info->master.num_slaves != 2) 2625 do_bond = false; 2626 2627 /* calc v2p */ 2628 if (do_bond) { 2629 if (bonding_info->master.bond_mode == 2630 BOND_MODE_ACTIVEBACKUP) { 2631 /* in active-backup mode virtual ports are 2632 * mapped to the physical port of the active 2633 * slave */ 2634 if (bonding_info->slave.state == 2635 BOND_STATE_BACKUP) { 2636 if (port == 1) { 2637 v2p_port1 = 2; 2638 v2p_port2 = 2; 2639 } else { 2640 v2p_port1 = 1; 2641 v2p_port2 = 1; 2642 } 2643 } else { /* BOND_STATE_ACTIVE */ 2644 if (port == 1) { 2645 v2p_port1 = 1; 2646 v2p_port2 = 1; 2647 } else { 2648 v2p_port1 = 2; 2649 v2p_port2 = 2; 2650 } 2651 } 2652 } else { /* Active-Active */ 2653 /* in active-active mode a virtual port is 2654 * mapped to the native physical port if and only 2655 * if the physical port is up */ 2656 __s8 link = bonding_info->slave.link; 2657 2658 if (port == 1) 2659 v2p_port2 = 2; 2660 else 2661 v2p_port1 = 1; 2662 if ((link == BOND_LINK_UP) || 2663 (link == BOND_LINK_FAIL)) { 2664 if (port == 1) 2665 v2p_port1 = 1; 2666 else 2667 v2p_port2 = 2; 2668 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */ 2669 if (port == 1) 2670 v2p_port1 = 2; 2671 else 2672 v2p_port2 = 1; 2673 } 2674 } 2675 } 2676 } 2677 2678 mlx4_en_queue_bond_work(priv, do_bond, 2679 v2p_port1, v2p_port2); 2680 2681 return NOTIFY_DONE; 2682 } 2683 2684 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev, 2685 struct mlx4_en_stats_bitmap *stats_bitmap, 2686 u8 rx_ppp, u8 rx_pause, 2687 u8 tx_ppp, u8 tx_pause) 2688 { 2689 int last_i = NUM_MAIN_STATS + NUM_PORT_STATS; 2690 2691 if (!mlx4_is_slave(dev) && 2692 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) { 2693 mutex_lock(&stats_bitmap->mutex); 2694 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS); 2695 2696 if (rx_ppp) 2697 bitmap_set(stats_bitmap->bitmap, last_i, 2698 NUM_FLOW_PRIORITY_STATS_RX); 2699 last_i += NUM_FLOW_PRIORITY_STATS_RX; 2700 2701 if (rx_pause && !(rx_ppp)) 2702 bitmap_set(stats_bitmap->bitmap, last_i, 2703 NUM_FLOW_STATS_RX); 2704 last_i += NUM_FLOW_STATS_RX; 2705 2706 if (tx_ppp) 2707 bitmap_set(stats_bitmap->bitmap, last_i, 2708 NUM_FLOW_PRIORITY_STATS_TX); 2709 last_i += NUM_FLOW_PRIORITY_STATS_TX; 2710 2711 if (tx_pause && !(tx_ppp)) 2712 bitmap_set(stats_bitmap->bitmap, last_i, 2713 NUM_FLOW_STATS_TX); 2714 last_i += NUM_FLOW_STATS_TX; 2715 2716 mutex_unlock(&stats_bitmap->mutex); 2717 } 2718 } 2719 2720 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev, 2721 struct mlx4_en_stats_bitmap *stats_bitmap, 2722 u8 rx_ppp, u8 rx_pause, 2723 u8 tx_ppp, u8 tx_pause) 2724 { 2725 int last_i = 0; 2726 2727 mutex_init(&stats_bitmap->mutex); 2728 bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS); 2729 2730 if (mlx4_is_slave(dev)) { 2731 bitmap_set(stats_bitmap->bitmap, last_i + 2732 MLX4_FIND_NETDEV_STAT(rx_packets), 1); 2733 bitmap_set(stats_bitmap->bitmap, last_i + 2734 MLX4_FIND_NETDEV_STAT(tx_packets), 1); 2735 bitmap_set(stats_bitmap->bitmap, last_i + 2736 MLX4_FIND_NETDEV_STAT(rx_bytes), 1); 2737 bitmap_set(stats_bitmap->bitmap, last_i + 2738 MLX4_FIND_NETDEV_STAT(tx_bytes), 1); 2739 bitmap_set(stats_bitmap->bitmap, last_i + 2740 MLX4_FIND_NETDEV_STAT(rx_dropped), 1); 2741 bitmap_set(stats_bitmap->bitmap, last_i + 2742 MLX4_FIND_NETDEV_STAT(tx_dropped), 1); 2743 } else { 2744 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS); 2745 } 2746 last_i += NUM_MAIN_STATS; 2747 2748 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS); 2749 last_i += NUM_PORT_STATS; 2750 2751 mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap, 2752 rx_ppp, rx_pause, 2753 tx_ppp, tx_pause); 2754 last_i += NUM_FLOW_STATS; 2755 2756 if (!mlx4_is_slave(dev)) 2757 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS); 2758 } 2759 2760 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 2761 struct mlx4_en_port_profile *prof) 2762 { 2763 struct net_device *dev; 2764 struct mlx4_en_priv *priv; 2765 int i; 2766 int err; 2767 u64 mac_u64; 2768 2769 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 2770 MAX_TX_RINGS, MAX_RX_RINGS); 2771 if (dev == NULL) 2772 return -ENOMEM; 2773 2774 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 2775 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 2776 2777 SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev); 2778 dev->dev_port = port - 1; 2779 2780 /* 2781 * Initialize driver private data 2782 */ 2783 2784 priv = netdev_priv(dev); 2785 memset(priv, 0, sizeof(struct mlx4_en_priv)); 2786 spin_lock_init(&priv->stats_lock); 2787 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 2788 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 2789 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 2790 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 2791 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 2792 #ifdef CONFIG_MLX4_EN_VXLAN 2793 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads); 2794 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads); 2795 #endif 2796 #ifdef CONFIG_RFS_ACCEL 2797 INIT_LIST_HEAD(&priv->filters); 2798 spin_lock_init(&priv->filters_lock); 2799 #endif 2800 2801 priv->dev = dev; 2802 priv->mdev = mdev; 2803 priv->ddev = &mdev->pdev->dev; 2804 priv->prof = prof; 2805 priv->port = port; 2806 priv->port_up = false; 2807 priv->flags = prof->flags; 2808 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME; 2809 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 2810 MLX4_WQE_CTRL_SOLICITED); 2811 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 2812 priv->tx_ring_num = prof->tx_ring_num; 2813 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK; 2814 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key)); 2815 2816 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 2817 GFP_KERNEL); 2818 if (!priv->tx_ring) { 2819 err = -ENOMEM; 2820 goto out; 2821 } 2822 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 2823 GFP_KERNEL); 2824 if (!priv->tx_cq) { 2825 err = -ENOMEM; 2826 goto out; 2827 } 2828 priv->rx_ring_num = prof->rx_ring_num; 2829 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 2830 priv->cqe_size = mdev->dev->caps.cqe_size; 2831 priv->mac_index = -1; 2832 priv->msg_enable = MLX4_EN_MSG_LEVEL; 2833 #ifdef CONFIG_MLX4_EN_DCB 2834 if (!mlx4_is_slave(priv->mdev->dev)) { 2835 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) { 2836 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 2837 } else { 2838 en_info(priv, "enabling only PFC DCB ops\n"); 2839 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 2840 } 2841 } 2842 #endif 2843 2844 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 2845 INIT_HLIST_HEAD(&priv->mac_hash[i]); 2846 2847 /* Query for default mac and max mtu */ 2848 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 2849 2850 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] & 2851 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP) 2852 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP; 2853 2854 /* Set default MAC */ 2855 dev->addr_len = ETH_ALEN; 2856 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 2857 if (!is_valid_ether_addr(dev->dev_addr)) { 2858 if (mlx4_is_slave(priv->mdev->dev)) { 2859 eth_hw_addr_random(dev); 2860 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 2861 mac_u64 = mlx4_mac_to_u64(dev->dev_addr); 2862 mdev->dev->caps.def_mac[priv->port] = mac_u64; 2863 } else { 2864 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 2865 priv->port, dev->dev_addr); 2866 err = -EINVAL; 2867 goto out; 2868 } 2869 } 2870 2871 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac)); 2872 2873 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2874 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2875 err = mlx4_en_alloc_resources(priv); 2876 if (err) 2877 goto out; 2878 2879 /* Initialize time stamping config */ 2880 priv->hwtstamp_config.flags = 0; 2881 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 2882 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 2883 2884 /* Allocate page for receive rings */ 2885 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 2886 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE); 2887 if (err) { 2888 en_err(priv, "Failed to allocate page for rx qps\n"); 2889 goto out; 2890 } 2891 priv->allocated = 1; 2892 2893 /* 2894 * Initialize netdev entry points 2895 */ 2896 if (mlx4_is_master(priv->mdev->dev)) 2897 dev->netdev_ops = &mlx4_netdev_ops_master; 2898 else 2899 dev->netdev_ops = &mlx4_netdev_ops; 2900 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 2901 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 2902 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 2903 2904 dev->ethtool_ops = &mlx4_en_ethtool_ops; 2905 2906 /* 2907 * Set driver features 2908 */ 2909 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2910 if (mdev->LSO_support) 2911 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2912 2913 dev->vlan_features = dev->hw_features; 2914 2915 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 2916 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 2917 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 2918 NETIF_F_HW_VLAN_CTAG_FILTER; 2919 dev->hw_features |= NETIF_F_LOOPBACK | 2920 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 2921 2922 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) 2923 dev->hw_features |= NETIF_F_RXFCS; 2924 2925 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS) 2926 dev->hw_features |= NETIF_F_RXALL; 2927 2928 if (mdev->dev->caps.steering_mode == 2929 MLX4_STEERING_MODE_DEVICE_MANAGED && 2930 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC) 2931 dev->hw_features |= NETIF_F_NTUPLE; 2932 2933 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 2934 dev->priv_flags |= IFF_UNICAST_FLT; 2935 2936 /* Setting a default hash function value */ 2937 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) { 2938 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 2939 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) { 2940 priv->rss_hash_fn = ETH_RSS_HASH_XOR; 2941 } else { 2942 en_warn(priv, 2943 "No RSS hash capabilities exposed, using Toeplitz\n"); 2944 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 2945 } 2946 2947 mdev->pndev[port] = dev; 2948 mdev->upper[port] = NULL; 2949 2950 netif_carrier_off(dev); 2951 mlx4_en_set_default_moderation(priv); 2952 2953 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 2954 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 2955 2956 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 2957 2958 /* Configure port */ 2959 mlx4_en_calc_rx_buf(dev); 2960 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 2961 priv->rx_skb_size + ETH_FCS_LEN, 2962 prof->tx_pause, prof->tx_ppp, 2963 prof->rx_pause, prof->rx_ppp); 2964 if (err) { 2965 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 2966 priv->port, err); 2967 goto out; 2968 } 2969 2970 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 2971 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 2972 if (err) { 2973 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 2974 err); 2975 goto out; 2976 } 2977 } 2978 2979 /* Init port */ 2980 en_warn(priv, "Initializing port\n"); 2981 err = mlx4_INIT_PORT(mdev->dev, priv->port); 2982 if (err) { 2983 en_err(priv, "Failed Initializing port\n"); 2984 goto out; 2985 } 2986 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 2987 2988 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2989 queue_delayed_work(mdev->workqueue, &priv->service_task, 2990 SERVICE_TASK_DELAY); 2991 2992 mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap, 2993 mdev->profile.prof[priv->port].rx_ppp, 2994 mdev->profile.prof[priv->port].rx_pause, 2995 mdev->profile.prof[priv->port].tx_ppp, 2996 mdev->profile.prof[priv->port].tx_pause); 2997 2998 err = register_netdev(dev); 2999 if (err) { 3000 en_err(priv, "Netdev registration failed for port %d\n", port); 3001 goto out; 3002 } 3003 3004 priv->registered = 1; 3005 3006 return 0; 3007 3008 out: 3009 mlx4_en_destroy_netdev(dev); 3010 return err; 3011 } 3012 3013 int mlx4_en_reset_config(struct net_device *dev, 3014 struct hwtstamp_config ts_config, 3015 netdev_features_t features) 3016 { 3017 struct mlx4_en_priv *priv = netdev_priv(dev); 3018 struct mlx4_en_dev *mdev = priv->mdev; 3019 int port_up = 0; 3020 int err = 0; 3021 3022 if (priv->hwtstamp_config.tx_type == ts_config.tx_type && 3023 priv->hwtstamp_config.rx_filter == ts_config.rx_filter && 3024 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3025 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) 3026 return 0; /* Nothing to change */ 3027 3028 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3029 (features & NETIF_F_HW_VLAN_CTAG_RX) && 3030 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) { 3031 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n"); 3032 return -EINVAL; 3033 } 3034 3035 mutex_lock(&mdev->state_lock); 3036 if (priv->port_up) { 3037 port_up = 1; 3038 mlx4_en_stop_port(dev, 1); 3039 } 3040 3041 mlx4_en_free_resources(priv); 3042 3043 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n", 3044 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX)); 3045 3046 priv->hwtstamp_config.tx_type = ts_config.tx_type; 3047 priv->hwtstamp_config.rx_filter = ts_config.rx_filter; 3048 3049 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 3050 if (features & NETIF_F_HW_VLAN_CTAG_RX) 3051 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3052 else 3053 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3054 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) { 3055 /* RX time-stamping is OFF, update the RX vlan offload 3056 * to the latest wanted state 3057 */ 3058 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX) 3059 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3060 else 3061 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3062 } 3063 3064 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) { 3065 if (features & NETIF_F_RXFCS) 3066 dev->features |= NETIF_F_RXFCS; 3067 else 3068 dev->features &= ~NETIF_F_RXFCS; 3069 } 3070 3071 /* RX vlan offload and RX time-stamping can't co-exist ! 3072 * Regardless of the caller's choice, 3073 * Turn Off RX vlan offload in case of time-stamping is ON 3074 */ 3075 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) { 3076 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 3077 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n"); 3078 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3079 } 3080 3081 err = mlx4_en_alloc_resources(priv); 3082 if (err) { 3083 en_err(priv, "Failed reallocating port resources\n"); 3084 goto out; 3085 } 3086 if (port_up) { 3087 err = mlx4_en_start_port(dev); 3088 if (err) 3089 en_err(priv, "Failed starting port\n"); 3090 } 3091 3092 out: 3093 mutex_unlock(&mdev->state_lock); 3094 netdev_features_change(dev); 3095 return err; 3096 } 3097