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 52int 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 */ 74static 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 102struct 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 123static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv); 124 125static 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 137static 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 205ignore: 206 mlx4_en_filter_rfs_expire(priv); 207 208 filter->activated = 1; 209} 210 211static inline struct hlist_head * 212filter_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 227static struct mlx4_en_filter * 228mlx4_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 260static 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 274static inline struct mlx4_en_filter * 275mlx4_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 298static int 299mlx4_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 351out: 352 ret = filter->id; 353err: 354 spin_unlock_bh(&priv->filters_lock); 355 356 return ret; 357} 358 359void 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 377static 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 411static 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 437static 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 462static 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 473static 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 493static 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 545static 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 572static 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 629alloc_err: 630 if (priv->tunnel_reg_id) 631 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 632tunnel_err: 633 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 634 635steer_err: 636 mlx4_qp_release_range(dev, *qpn, 1); 637 638qp_err: 639 mlx4_unregister_mac(dev, priv->port, mac); 640 return err; 641} 642 643static 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 688static 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 738static 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 758static 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 779static 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 790static 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 808static 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 855static 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 865static 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 925static 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 972static 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 1105static 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 1226static 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); 1268out: 1269 mutex_unlock(&mdev->state_lock); 1270} 1271 1272#ifdef CONFIG_NET_POLL_CONTROLLER 1273static 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 1286static 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 1309static 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 1320static 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 1365static 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 1428static 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 */ 1458static 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 1477static 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 1500static 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 1513static 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 1518int 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 1708tx_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); 1714rss_err: 1715 mlx4_en_release_rss_steer(priv); 1716mac_err: 1717 mlx4_en_put_qp(priv); 1718cq_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 1730void 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 1857static 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 1875static 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 1909static 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 1930out: 1931 mutex_unlock(&mdev->state_lock); 1932 return err; 1933} 1934 1935 1936static 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 1952void 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} 1977 1978int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 1979{ 1980 struct mlx4_en_port_profile *prof = priv->prof; 1981 int i; 1982 int node; 1983 1984 /* Create tx Rings */ 1985 for (i = 0; i < priv->tx_ring_num; i++) { 1986 node = cpu_to_node(i % num_online_cpus()); 1987 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 1988 prof->tx_ring_size, i, TX, node)) 1989 goto err; 1990 1991 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], 1992 prof->tx_ring_size, TXBB_SIZE, 1993 node, i)) 1994 goto err; 1995 } 1996 1997 /* Create rx Rings */ 1998 for (i = 0; i < priv->rx_ring_num; i++) { 1999 node = cpu_to_node(i % num_online_cpus()); 2000 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 2001 prof->rx_ring_size, i, RX, node)) 2002 goto err; 2003 2004 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 2005 prof->rx_ring_size, priv->stride, 2006 node)) 2007 goto err; 2008 } 2009 2010#ifdef CONFIG_RFS_ACCEL 2011 if (priv->mdev->dev->caps.comp_pool) { 2012 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool); 2013 if (!priv->dev->rx_cpu_rmap) 2014 goto err; 2015 } 2016#endif 2017 2018 return 0; 2019 2020err: 2021 en_err(priv, "Failed to allocate NIC resources\n"); 2022 for (i = 0; i < priv->rx_ring_num; i++) { 2023 if (priv->rx_ring[i]) 2024 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2025 prof->rx_ring_size, 2026 priv->stride); 2027 if (priv->rx_cq[i]) 2028 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2029 } 2030 for (i = 0; i < priv->tx_ring_num; i++) { 2031 if (priv->tx_ring[i]) 2032 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2033 if (priv->tx_cq[i]) 2034 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2035 } 2036 return -ENOMEM; 2037} 2038 2039 2040void mlx4_en_destroy_netdev(struct net_device *dev) 2041{ 2042 struct mlx4_en_priv *priv = netdev_priv(dev); 2043 struct mlx4_en_dev *mdev = priv->mdev; 2044 2045 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2046 2047 /* Unregister device - this will close the port if it was up */ 2048 if (priv->registered) 2049 unregister_netdev(dev); 2050 2051 if (priv->allocated) 2052 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2053 2054 cancel_delayed_work(&priv->stats_task); 2055 cancel_delayed_work(&priv->service_task); 2056 /* flush any pending task for this netdev */ 2057 flush_workqueue(mdev->workqueue); 2058 2059 /* Detach the netdev so tasks would not attempt to access it */ 2060 mutex_lock(&mdev->state_lock); 2061 mdev->pndev[priv->port] = NULL; 2062 mdev->upper[priv->port] = NULL; 2063 mutex_unlock(&mdev->state_lock); 2064 2065 mlx4_en_free_resources(priv); 2066 2067 kfree(priv->tx_ring); 2068 kfree(priv->tx_cq); 2069 2070 free_netdev(dev); 2071} 2072 2073static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2074{ 2075 struct mlx4_en_priv *priv = netdev_priv(dev); 2076 struct mlx4_en_dev *mdev = priv->mdev; 2077 int err = 0; 2078 2079 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2080 dev->mtu, new_mtu); 2081 2082 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 2083 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 2084 return -EPERM; 2085 } 2086 dev->mtu = new_mtu; 2087 2088 if (netif_running(dev)) { 2089 mutex_lock(&mdev->state_lock); 2090 if (!mdev->device_up) { 2091 /* NIC is probably restarting - let watchdog task reset 2092 * the port */ 2093 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2094 } else { 2095 mlx4_en_stop_port(dev, 1); 2096 err = mlx4_en_start_port(dev); 2097 if (err) { 2098 en_err(priv, "Failed restarting port:%d\n", 2099 priv->port); 2100 queue_work(mdev->workqueue, &priv->watchdog_task); 2101 } 2102 } 2103 mutex_unlock(&mdev->state_lock); 2104 } 2105 return 0; 2106} 2107 2108static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2109{ 2110 struct mlx4_en_priv *priv = netdev_priv(dev); 2111 struct mlx4_en_dev *mdev = priv->mdev; 2112 struct hwtstamp_config config; 2113 2114 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2115 return -EFAULT; 2116 2117 /* reserved for future extensions */ 2118 if (config.flags) 2119 return -EINVAL; 2120 2121 /* device doesn't support time stamping */ 2122 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2123 return -EINVAL; 2124 2125 /* TX HW timestamp */ 2126 switch (config.tx_type) { 2127 case HWTSTAMP_TX_OFF: 2128 case HWTSTAMP_TX_ON: 2129 break; 2130 default: 2131 return -ERANGE; 2132 } 2133 2134 /* RX HW timestamp */ 2135 switch (config.rx_filter) { 2136 case HWTSTAMP_FILTER_NONE: 2137 break; 2138 case HWTSTAMP_FILTER_ALL: 2139 case HWTSTAMP_FILTER_SOME: 2140 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2141 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2142 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2143 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2144 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2145 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2146 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2147 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2148 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2149 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2150 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2151 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2152 config.rx_filter = HWTSTAMP_FILTER_ALL; 2153 break; 2154 default: 2155 return -ERANGE; 2156 } 2157 2158 if (mlx4_en_reset_config(dev, config, dev->features)) { 2159 config.tx_type = HWTSTAMP_TX_OFF; 2160 config.rx_filter = HWTSTAMP_FILTER_NONE; 2161 } 2162 2163 return copy_to_user(ifr->ifr_data, &config, 2164 sizeof(config)) ? -EFAULT : 0; 2165} 2166 2167static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2168{ 2169 struct mlx4_en_priv *priv = netdev_priv(dev); 2170 2171 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2172 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2173} 2174 2175static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2176{ 2177 switch (cmd) { 2178 case SIOCSHWTSTAMP: 2179 return mlx4_en_hwtstamp_set(dev, ifr); 2180 case SIOCGHWTSTAMP: 2181 return mlx4_en_hwtstamp_get(dev, ifr); 2182 default: 2183 return -EOPNOTSUPP; 2184 } 2185} 2186 2187static int mlx4_en_set_features(struct net_device *netdev, 2188 netdev_features_t features) 2189{ 2190 struct mlx4_en_priv *priv = netdev_priv(netdev); 2191 bool reset = false; 2192 int ret = 0; 2193 2194 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) { 2195 en_info(priv, "Turn %s RX-FCS\n", 2196 (features & NETIF_F_RXFCS) ? "ON" : "OFF"); 2197 reset = true; 2198 } 2199 2200 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) { 2201 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0; 2202 2203 en_info(priv, "Turn %s RX-ALL\n", 2204 ignore_fcs_value ? "ON" : "OFF"); 2205 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev, 2206 priv->port, ignore_fcs_value); 2207 if (ret) 2208 return ret; 2209 } 2210 2211 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 2212 en_info(priv, "Turn %s RX vlan strip offload\n", 2213 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF"); 2214 reset = true; 2215 } 2216 2217 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX)) 2218 en_info(priv, "Turn %s TX vlan strip offload\n", 2219 (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF"); 2220 2221 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) { 2222 en_info(priv, "Turn %s loopback\n", 2223 (features & NETIF_F_LOOPBACK) ? "ON" : "OFF"); 2224 mlx4_en_update_loopback_state(netdev, features); 2225 } 2226 2227 if (reset) { 2228 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config, 2229 features); 2230 if (ret) 2231 return ret; 2232 } 2233 2234 return 0; 2235} 2236 2237static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2238{ 2239 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2240 struct mlx4_en_dev *mdev = en_priv->mdev; 2241 u64 mac_u64 = mlx4_mac_to_u64(mac); 2242 2243 if (!is_valid_ether_addr(mac)) 2244 return -EINVAL; 2245 2246 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2247} 2248 2249static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) 2250{ 2251 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2252 struct mlx4_en_dev *mdev = en_priv->mdev; 2253 2254 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos); 2255} 2256 2257static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, 2258 int max_tx_rate) 2259{ 2260 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2261 struct mlx4_en_dev *mdev = en_priv->mdev; 2262 2263 return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate, 2264 max_tx_rate); 2265} 2266 2267static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2268{ 2269 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2270 struct mlx4_en_dev *mdev = en_priv->mdev; 2271 2272 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2273} 2274 2275static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2276{ 2277 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2278 struct mlx4_en_dev *mdev = en_priv->mdev; 2279 2280 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2281} 2282 2283static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2284{ 2285 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2286 struct mlx4_en_dev *mdev = en_priv->mdev; 2287 2288 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2289} 2290 2291#define PORT_ID_BYTE_LEN 8 2292static int mlx4_en_get_phys_port_id(struct net_device *dev, 2293 struct netdev_phys_item_id *ppid) 2294{ 2295 struct mlx4_en_priv *priv = netdev_priv(dev); 2296 struct mlx4_dev *mdev = priv->mdev->dev; 2297 int i; 2298 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2299 2300 if (!phys_port_id) 2301 return -EOPNOTSUPP; 2302 2303 ppid->id_len = sizeof(phys_port_id); 2304 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2305 ppid->id[i] = phys_port_id & 0xff; 2306 phys_port_id >>= 8; 2307 } 2308 return 0; 2309} 2310 2311#ifdef CONFIG_MLX4_EN_VXLAN 2312static void mlx4_en_add_vxlan_offloads(struct work_struct *work) 2313{ 2314 int ret; 2315 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2316 vxlan_add_task); 2317 2318 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port); 2319 if (ret) 2320 goto out; 2321 2322 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2323 VXLAN_STEER_BY_OUTER_MAC, 1); 2324out: 2325 if (ret) { 2326 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2327 return; 2328 } 2329 2330 /* set offloads */ 2331 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2332 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL; 2333} 2334 2335static void mlx4_en_del_vxlan_offloads(struct work_struct *work) 2336{ 2337 int ret; 2338 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2339 vxlan_del_task); 2340 /* unset offloads */ 2341 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2342 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL); 2343 2344 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2345 VXLAN_STEER_BY_OUTER_MAC, 0); 2346 if (ret) 2347 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2348 2349 priv->vxlan_port = 0; 2350} 2351 2352static void mlx4_en_add_vxlan_port(struct net_device *dev, 2353 sa_family_t sa_family, __be16 port) 2354{ 2355 struct mlx4_en_priv *priv = netdev_priv(dev); 2356 __be16 current_port; 2357 2358 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2359 return; 2360 2361 if (sa_family == AF_INET6) 2362 return; 2363 2364 current_port = priv->vxlan_port; 2365 if (current_port && current_port != port) { 2366 en_warn(priv, "vxlan port %d configured, can't add port %d\n", 2367 ntohs(current_port), ntohs(port)); 2368 return; 2369 } 2370 2371 priv->vxlan_port = port; 2372 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task); 2373} 2374 2375static void mlx4_en_del_vxlan_port(struct net_device *dev, 2376 sa_family_t sa_family, __be16 port) 2377{ 2378 struct mlx4_en_priv *priv = netdev_priv(dev); 2379 __be16 current_port; 2380 2381 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2382 return; 2383 2384 if (sa_family == AF_INET6) 2385 return; 2386 2387 current_port = priv->vxlan_port; 2388 if (current_port != port) { 2389 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port)); 2390 return; 2391 } 2392 2393 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task); 2394} 2395 2396static netdev_features_t mlx4_en_features_check(struct sk_buff *skb, 2397 struct net_device *dev, 2398 netdev_features_t features) 2399{ 2400 features = vlan_features_check(skb, features); 2401 return vxlan_features_check(skb, features); 2402} 2403#endif 2404 2405static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate) 2406{ 2407 struct mlx4_en_priv *priv = netdev_priv(dev); 2408 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index]; 2409 struct mlx4_update_qp_params params; 2410 int err; 2411 2412 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT)) 2413 return -EOPNOTSUPP; 2414 2415 /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */ 2416 if (maxrate >> 12) { 2417 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS; 2418 params.rate_val = maxrate / 1000; 2419 } else if (maxrate) { 2420 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS; 2421 params.rate_val = maxrate; 2422 } else { /* zero serves to revoke the QP rate-limitation */ 2423 params.rate_unit = 0; 2424 params.rate_val = 0; 2425 } 2426 2427 err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT, 2428 ¶ms); 2429 return err; 2430} 2431 2432static const struct net_device_ops mlx4_netdev_ops = { 2433 .ndo_open = mlx4_en_open, 2434 .ndo_stop = mlx4_en_close, 2435 .ndo_start_xmit = mlx4_en_xmit, 2436 .ndo_select_queue = mlx4_en_select_queue, 2437 .ndo_get_stats = mlx4_en_get_stats, 2438 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2439 .ndo_set_mac_address = mlx4_en_set_mac, 2440 .ndo_validate_addr = eth_validate_addr, 2441 .ndo_change_mtu = mlx4_en_change_mtu, 2442 .ndo_do_ioctl = mlx4_en_ioctl, 2443 .ndo_tx_timeout = mlx4_en_tx_timeout, 2444 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2445 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2446#ifdef CONFIG_NET_POLL_CONTROLLER 2447 .ndo_poll_controller = mlx4_en_netpoll, 2448#endif 2449 .ndo_set_features = mlx4_en_set_features, 2450 .ndo_setup_tc = mlx4_en_setup_tc, 2451#ifdef CONFIG_RFS_ACCEL 2452 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2453#endif 2454#ifdef CONFIG_NET_RX_BUSY_POLL 2455 .ndo_busy_poll = mlx4_en_low_latency_recv, 2456#endif 2457 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2458#ifdef CONFIG_MLX4_EN_VXLAN 2459 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2460 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2461 .ndo_features_check = mlx4_en_features_check, 2462#endif 2463 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2464}; 2465 2466static const struct net_device_ops mlx4_netdev_ops_master = { 2467 .ndo_open = mlx4_en_open, 2468 .ndo_stop = mlx4_en_close, 2469 .ndo_start_xmit = mlx4_en_xmit, 2470 .ndo_select_queue = mlx4_en_select_queue, 2471 .ndo_get_stats = mlx4_en_get_stats, 2472 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2473 .ndo_set_mac_address = mlx4_en_set_mac, 2474 .ndo_validate_addr = eth_validate_addr, 2475 .ndo_change_mtu = mlx4_en_change_mtu, 2476 .ndo_tx_timeout = mlx4_en_tx_timeout, 2477 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2478 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2479 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2480 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2481 .ndo_set_vf_rate = mlx4_en_set_vf_rate, 2482 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2483 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2484 .ndo_get_vf_config = mlx4_en_get_vf_config, 2485#ifdef CONFIG_NET_POLL_CONTROLLER 2486 .ndo_poll_controller = mlx4_en_netpoll, 2487#endif 2488 .ndo_set_features = mlx4_en_set_features, 2489 .ndo_setup_tc = mlx4_en_setup_tc, 2490#ifdef CONFIG_RFS_ACCEL 2491 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2492#endif 2493 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2494#ifdef CONFIG_MLX4_EN_VXLAN 2495 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2496 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2497 .ndo_features_check = mlx4_en_features_check, 2498#endif 2499 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2500}; 2501 2502struct mlx4_en_bond { 2503 struct work_struct work; 2504 struct mlx4_en_priv *priv; 2505 int is_bonded; 2506 struct mlx4_port_map port_map; 2507}; 2508 2509static void mlx4_en_bond_work(struct work_struct *work) 2510{ 2511 struct mlx4_en_bond *bond = container_of(work, 2512 struct mlx4_en_bond, 2513 work); 2514 int err = 0; 2515 struct mlx4_dev *dev = bond->priv->mdev->dev; 2516 2517 if (bond->is_bonded) { 2518 if (!mlx4_is_bonded(dev)) { 2519 err = mlx4_bond(dev); 2520 if (err) 2521 en_err(bond->priv, "Fail to bond device\n"); 2522 } 2523 if (!err) { 2524 err = mlx4_port_map_set(dev, &bond->port_map); 2525 if (err) 2526 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n", 2527 bond->port_map.port1, 2528 bond->port_map.port2, 2529 err); 2530 } 2531 } else if (mlx4_is_bonded(dev)) { 2532 err = mlx4_unbond(dev); 2533 if (err) 2534 en_err(bond->priv, "Fail to unbond device\n"); 2535 } 2536 dev_put(bond->priv->dev); 2537 kfree(bond); 2538} 2539 2540static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded, 2541 u8 v2p_p1, u8 v2p_p2) 2542{ 2543 struct mlx4_en_bond *bond = NULL; 2544 2545 bond = kzalloc(sizeof(*bond), GFP_ATOMIC); 2546 if (!bond) 2547 return -ENOMEM; 2548 2549 INIT_WORK(&bond->work, mlx4_en_bond_work); 2550 bond->priv = priv; 2551 bond->is_bonded = is_bonded; 2552 bond->port_map.port1 = v2p_p1; 2553 bond->port_map.port2 = v2p_p2; 2554 dev_hold(priv->dev); 2555 queue_work(priv->mdev->workqueue, &bond->work); 2556 return 0; 2557} 2558 2559int mlx4_en_netdev_event(struct notifier_block *this, 2560 unsigned long event, void *ptr) 2561{ 2562 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 2563 u8 port = 0; 2564 struct mlx4_en_dev *mdev; 2565 struct mlx4_dev *dev; 2566 int i, num_eth_ports = 0; 2567 bool do_bond = true; 2568 struct mlx4_en_priv *priv; 2569 u8 v2p_port1 = 0; 2570 u8 v2p_port2 = 0; 2571 2572 if (!net_eq(dev_net(ndev), &init_net)) 2573 return NOTIFY_DONE; 2574 2575 mdev = container_of(this, struct mlx4_en_dev, nb); 2576 dev = mdev->dev; 2577 2578 /* Go into this mode only when two network devices set on two ports 2579 * of the same mlx4 device are slaves of the same bonding master 2580 */ 2581 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { 2582 ++num_eth_ports; 2583 if (!port && (mdev->pndev[i] == ndev)) 2584 port = i; 2585 mdev->upper[i] = mdev->pndev[i] ? 2586 netdev_master_upper_dev_get(mdev->pndev[i]) : NULL; 2587 /* condition not met: network device is a slave */ 2588 if (!mdev->upper[i]) 2589 do_bond = false; 2590 if (num_eth_ports < 2) 2591 continue; 2592 /* condition not met: same master */ 2593 if (mdev->upper[i] != mdev->upper[i-1]) 2594 do_bond = false; 2595 } 2596 /* condition not met: 2 salves */ 2597 do_bond = (num_eth_ports == 2) ? do_bond : false; 2598 2599 /* handle only events that come with enough info */ 2600 if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port) 2601 return NOTIFY_DONE; 2602 2603 priv = netdev_priv(ndev); 2604 if (do_bond) { 2605 struct netdev_notifier_bonding_info *notifier_info = ptr; 2606 struct netdev_bonding_info *bonding_info = 2607 ¬ifier_info->bonding_info; 2608 2609 /* required mode 1, 2 or 4 */ 2610 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) && 2611 (bonding_info->master.bond_mode != BOND_MODE_XOR) && 2612 (bonding_info->master.bond_mode != BOND_MODE_8023AD)) 2613 do_bond = false; 2614 2615 /* require exactly 2 slaves */ 2616 if (bonding_info->master.num_slaves != 2) 2617 do_bond = false; 2618 2619 /* calc v2p */ 2620 if (do_bond) { 2621 if (bonding_info->master.bond_mode == 2622 BOND_MODE_ACTIVEBACKUP) { 2623 /* in active-backup mode virtual ports are 2624 * mapped to the physical port of the active 2625 * slave */ 2626 if (bonding_info->slave.state == 2627 BOND_STATE_BACKUP) { 2628 if (port == 1) { 2629 v2p_port1 = 2; 2630 v2p_port2 = 2; 2631 } else { 2632 v2p_port1 = 1; 2633 v2p_port2 = 1; 2634 } 2635 } else { /* BOND_STATE_ACTIVE */ 2636 if (port == 1) { 2637 v2p_port1 = 1; 2638 v2p_port2 = 1; 2639 } else { 2640 v2p_port1 = 2; 2641 v2p_port2 = 2; 2642 } 2643 } 2644 } else { /* Active-Active */ 2645 /* in active-active mode a virtual port is 2646 * mapped to the native physical port if and only 2647 * if the physical port is up */ 2648 __s8 link = bonding_info->slave.link; 2649 2650 if (port == 1) 2651 v2p_port2 = 2; 2652 else 2653 v2p_port1 = 1; 2654 if ((link == BOND_LINK_UP) || 2655 (link == BOND_LINK_FAIL)) { 2656 if (port == 1) 2657 v2p_port1 = 1; 2658 else 2659 v2p_port2 = 2; 2660 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */ 2661 if (port == 1) 2662 v2p_port1 = 2; 2663 else 2664 v2p_port2 = 1; 2665 } 2666 } 2667 } 2668 } 2669 2670 mlx4_en_queue_bond_work(priv, do_bond, 2671 v2p_port1, v2p_port2); 2672 2673 return NOTIFY_DONE; 2674} 2675 2676void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev, 2677 struct mlx4_en_stats_bitmap *stats_bitmap, 2678 u8 rx_ppp, u8 rx_pause, 2679 u8 tx_ppp, u8 tx_pause) 2680{ 2681 int last_i = NUM_MAIN_STATS + NUM_PORT_STATS; 2682 2683 if (!mlx4_is_slave(dev) && 2684 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) { 2685 mutex_lock(&stats_bitmap->mutex); 2686 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS); 2687 2688 if (rx_ppp) 2689 bitmap_set(stats_bitmap->bitmap, last_i, 2690 NUM_FLOW_PRIORITY_STATS_RX); 2691 last_i += NUM_FLOW_PRIORITY_STATS_RX; 2692 2693 if (rx_pause && !(rx_ppp)) 2694 bitmap_set(stats_bitmap->bitmap, last_i, 2695 NUM_FLOW_STATS_RX); 2696 last_i += NUM_FLOW_STATS_RX; 2697 2698 if (tx_ppp) 2699 bitmap_set(stats_bitmap->bitmap, last_i, 2700 NUM_FLOW_PRIORITY_STATS_TX); 2701 last_i += NUM_FLOW_PRIORITY_STATS_TX; 2702 2703 if (tx_pause && !(tx_ppp)) 2704 bitmap_set(stats_bitmap->bitmap, last_i, 2705 NUM_FLOW_STATS_TX); 2706 last_i += NUM_FLOW_STATS_TX; 2707 2708 mutex_unlock(&stats_bitmap->mutex); 2709 } 2710} 2711 2712void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev, 2713 struct mlx4_en_stats_bitmap *stats_bitmap, 2714 u8 rx_ppp, u8 rx_pause, 2715 u8 tx_ppp, u8 tx_pause) 2716{ 2717 int last_i = 0; 2718 2719 mutex_init(&stats_bitmap->mutex); 2720 bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS); 2721 2722 if (mlx4_is_slave(dev)) { 2723 bitmap_set(stats_bitmap->bitmap, last_i + 2724 MLX4_FIND_NETDEV_STAT(rx_packets), 1); 2725 bitmap_set(stats_bitmap->bitmap, last_i + 2726 MLX4_FIND_NETDEV_STAT(tx_packets), 1); 2727 bitmap_set(stats_bitmap->bitmap, last_i + 2728 MLX4_FIND_NETDEV_STAT(rx_bytes), 1); 2729 bitmap_set(stats_bitmap->bitmap, last_i + 2730 MLX4_FIND_NETDEV_STAT(tx_bytes), 1); 2731 bitmap_set(stats_bitmap->bitmap, last_i + 2732 MLX4_FIND_NETDEV_STAT(rx_dropped), 1); 2733 bitmap_set(stats_bitmap->bitmap, last_i + 2734 MLX4_FIND_NETDEV_STAT(tx_dropped), 1); 2735 } else { 2736 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS); 2737 } 2738 last_i += NUM_MAIN_STATS; 2739 2740 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS); 2741 last_i += NUM_PORT_STATS; 2742 2743 mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap, 2744 rx_ppp, rx_pause, 2745 tx_ppp, tx_pause); 2746 last_i += NUM_FLOW_STATS; 2747 2748 if (!mlx4_is_slave(dev)) 2749 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS); 2750} 2751 2752int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 2753 struct mlx4_en_port_profile *prof) 2754{ 2755 struct net_device *dev; 2756 struct mlx4_en_priv *priv; 2757 int i; 2758 int err; 2759 u64 mac_u64; 2760 2761 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 2762 MAX_TX_RINGS, MAX_RX_RINGS); 2763 if (dev == NULL) 2764 return -ENOMEM; 2765 2766 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 2767 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 2768 2769 SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev); 2770 dev->dev_port = port - 1; 2771 2772 /* 2773 * Initialize driver private data 2774 */ 2775 2776 priv = netdev_priv(dev); 2777 memset(priv, 0, sizeof(struct mlx4_en_priv)); 2778 spin_lock_init(&priv->stats_lock); 2779 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 2780 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 2781 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 2782 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 2783 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 2784#ifdef CONFIG_MLX4_EN_VXLAN 2785 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads); 2786 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads); 2787#endif 2788#ifdef CONFIG_RFS_ACCEL 2789 INIT_LIST_HEAD(&priv->filters); 2790 spin_lock_init(&priv->filters_lock); 2791#endif 2792 2793 priv->dev = dev; 2794 priv->mdev = mdev; 2795 priv->ddev = &mdev->pdev->dev; 2796 priv->prof = prof; 2797 priv->port = port; 2798 priv->port_up = false; 2799 priv->flags = prof->flags; 2800 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME; 2801 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 2802 MLX4_WQE_CTRL_SOLICITED); 2803 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 2804 priv->tx_ring_num = prof->tx_ring_num; 2805 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK; 2806 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key)); 2807 2808 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 2809 GFP_KERNEL); 2810 if (!priv->tx_ring) { 2811 err = -ENOMEM; 2812 goto out; 2813 } 2814 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 2815 GFP_KERNEL); 2816 if (!priv->tx_cq) { 2817 err = -ENOMEM; 2818 goto out; 2819 } 2820 priv->rx_ring_num = prof->rx_ring_num; 2821 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 2822 priv->cqe_size = mdev->dev->caps.cqe_size; 2823 priv->mac_index = -1; 2824 priv->msg_enable = MLX4_EN_MSG_LEVEL; 2825#ifdef CONFIG_MLX4_EN_DCB 2826 if (!mlx4_is_slave(priv->mdev->dev)) { 2827 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) { 2828 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 2829 } else { 2830 en_info(priv, "enabling only PFC DCB ops\n"); 2831 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 2832 } 2833 } 2834#endif 2835 2836 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 2837 INIT_HLIST_HEAD(&priv->mac_hash[i]); 2838 2839 /* Query for default mac and max mtu */ 2840 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 2841 2842 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] & 2843 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP) 2844 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP; 2845 2846 /* Set default MAC */ 2847 dev->addr_len = ETH_ALEN; 2848 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 2849 if (!is_valid_ether_addr(dev->dev_addr)) { 2850 if (mlx4_is_slave(priv->mdev->dev)) { 2851 eth_hw_addr_random(dev); 2852 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 2853 mac_u64 = mlx4_mac_to_u64(dev->dev_addr); 2854 mdev->dev->caps.def_mac[priv->port] = mac_u64; 2855 } else { 2856 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 2857 priv->port, dev->dev_addr); 2858 err = -EINVAL; 2859 goto out; 2860 } 2861 } 2862 2863 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac)); 2864 2865 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2866 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2867 err = mlx4_en_alloc_resources(priv); 2868 if (err) 2869 goto out; 2870 2871 /* Initialize time stamping config */ 2872 priv->hwtstamp_config.flags = 0; 2873 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 2874 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 2875 2876 /* Allocate page for receive rings */ 2877 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 2878 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE); 2879 if (err) { 2880 en_err(priv, "Failed to allocate page for rx qps\n"); 2881 goto out; 2882 } 2883 priv->allocated = 1; 2884 2885 /* 2886 * Initialize netdev entry points 2887 */ 2888 if (mlx4_is_master(priv->mdev->dev)) 2889 dev->netdev_ops = &mlx4_netdev_ops_master; 2890 else 2891 dev->netdev_ops = &mlx4_netdev_ops; 2892 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 2893 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 2894 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 2895 2896 dev->ethtool_ops = &mlx4_en_ethtool_ops; 2897 2898 /* 2899 * Set driver features 2900 */ 2901 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2902 if (mdev->LSO_support) 2903 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2904 2905 dev->vlan_features = dev->hw_features; 2906 2907 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 2908 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 2909 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 2910 NETIF_F_HW_VLAN_CTAG_FILTER; 2911 dev->hw_features |= NETIF_F_LOOPBACK | 2912 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 2913 2914 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) 2915 dev->hw_features |= NETIF_F_RXFCS; 2916 2917 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS) 2918 dev->hw_features |= NETIF_F_RXALL; 2919 2920 if (mdev->dev->caps.steering_mode == 2921 MLX4_STEERING_MODE_DEVICE_MANAGED && 2922 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC) 2923 dev->hw_features |= NETIF_F_NTUPLE; 2924 2925 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 2926 dev->priv_flags |= IFF_UNICAST_FLT; 2927 2928 /* Setting a default hash function value */ 2929 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) { 2930 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 2931 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) { 2932 priv->rss_hash_fn = ETH_RSS_HASH_XOR; 2933 } else { 2934 en_warn(priv, 2935 "No RSS hash capabilities exposed, using Toeplitz\n"); 2936 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 2937 } 2938 2939 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 2940 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; 2941 dev->features |= NETIF_F_GSO_UDP_TUNNEL; 2942 } 2943 2944 mdev->pndev[port] = dev; 2945 mdev->upper[port] = NULL; 2946 2947 netif_carrier_off(dev); 2948 mlx4_en_set_default_moderation(priv); 2949 2950 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 2951 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 2952 2953 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 2954 2955 /* Configure port */ 2956 mlx4_en_calc_rx_buf(dev); 2957 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 2958 priv->rx_skb_size + ETH_FCS_LEN, 2959 prof->tx_pause, prof->tx_ppp, 2960 prof->rx_pause, prof->rx_ppp); 2961 if (err) { 2962 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 2963 priv->port, err); 2964 goto out; 2965 } 2966 2967 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 2968 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 2969 if (err) { 2970 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 2971 err); 2972 goto out; 2973 } 2974 } 2975 2976 /* Init port */ 2977 en_warn(priv, "Initializing port\n"); 2978 err = mlx4_INIT_PORT(mdev->dev, priv->port); 2979 if (err) { 2980 en_err(priv, "Failed Initializing port\n"); 2981 goto out; 2982 } 2983 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 2984 2985 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2986 queue_delayed_work(mdev->workqueue, &priv->service_task, 2987 SERVICE_TASK_DELAY); 2988 2989 mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap, 2990 mdev->profile.prof[priv->port].rx_ppp, 2991 mdev->profile.prof[priv->port].rx_pause, 2992 mdev->profile.prof[priv->port].tx_ppp, 2993 mdev->profile.prof[priv->port].tx_pause); 2994 2995 err = register_netdev(dev); 2996 if (err) { 2997 en_err(priv, "Netdev registration failed for port %d\n", port); 2998 goto out; 2999 } 3000 3001 priv->registered = 1; 3002 3003 return 0; 3004 3005out: 3006 mlx4_en_destroy_netdev(dev); 3007 return err; 3008} 3009 3010int mlx4_en_reset_config(struct net_device *dev, 3011 struct hwtstamp_config ts_config, 3012 netdev_features_t features) 3013{ 3014 struct mlx4_en_priv *priv = netdev_priv(dev); 3015 struct mlx4_en_dev *mdev = priv->mdev; 3016 int port_up = 0; 3017 int err = 0; 3018 3019 if (priv->hwtstamp_config.tx_type == ts_config.tx_type && 3020 priv->hwtstamp_config.rx_filter == ts_config.rx_filter && 3021 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3022 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) 3023 return 0; /* Nothing to change */ 3024 3025 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3026 (features & NETIF_F_HW_VLAN_CTAG_RX) && 3027 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) { 3028 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n"); 3029 return -EINVAL; 3030 } 3031 3032 mutex_lock(&mdev->state_lock); 3033 if (priv->port_up) { 3034 port_up = 1; 3035 mlx4_en_stop_port(dev, 1); 3036 } 3037 3038 mlx4_en_free_resources(priv); 3039 3040 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n", 3041 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX)); 3042 3043 priv->hwtstamp_config.tx_type = ts_config.tx_type; 3044 priv->hwtstamp_config.rx_filter = ts_config.rx_filter; 3045 3046 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 3047 if (features & NETIF_F_HW_VLAN_CTAG_RX) 3048 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3049 else 3050 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3051 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) { 3052 /* RX time-stamping is OFF, update the RX vlan offload 3053 * to the latest wanted state 3054 */ 3055 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX) 3056 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3057 else 3058 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3059 } 3060 3061 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) { 3062 if (features & NETIF_F_RXFCS) 3063 dev->features |= NETIF_F_RXFCS; 3064 else 3065 dev->features &= ~NETIF_F_RXFCS; 3066 } 3067 3068 /* RX vlan offload and RX time-stamping can't co-exist ! 3069 * Regardless of the caller's choice, 3070 * Turn Off RX vlan offload in case of time-stamping is ON 3071 */ 3072 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) { 3073 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 3074 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n"); 3075 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3076 } 3077 3078 err = mlx4_en_alloc_resources(priv); 3079 if (err) { 3080 en_err(priv, "Failed reallocating port resources\n"); 3081 goto out; 3082 } 3083 if (port_up) { 3084 err = mlx4_en_start_port(dev); 3085 if (err) 3086 en_err(priv, "Failed starting port\n"); 3087 } 3088 3089out: 3090 mutex_unlock(&mdev->state_lock); 3091 netdev_features_change(dev); 3092 return err; 3093} 3094