1 /* 2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 * 32 */ 33 34 #include <linux/etherdevice.h> 35 #include <linux/tcp.h> 36 #include <linux/if_vlan.h> 37 #include <linux/delay.h> 38 #include <linux/slab.h> 39 #include <linux/hash.h> 40 #include <net/ip.h> 41 #include <net/busy_poll.h> 42 #include <net/vxlan.h> 43 44 #include <linux/mlx4/driver.h> 45 #include <linux/mlx4/device.h> 46 #include <linux/mlx4/cmd.h> 47 #include <linux/mlx4/cq.h> 48 49 #include "mlx4_en.h" 50 #include "en_port.h" 51 52 int mlx4_en_setup_tc(struct net_device *dev, u8 up) 53 { 54 struct mlx4_en_priv *priv = netdev_priv(dev); 55 int i; 56 unsigned int offset = 0; 57 58 if (up && up != MLX4_EN_NUM_UP) 59 return -EINVAL; 60 61 netdev_set_num_tc(dev, up); 62 63 /* Partition Tx queues evenly amongst UP's */ 64 for (i = 0; i < up; i++) { 65 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset); 66 offset += priv->num_tx_rings_p_up; 67 } 68 69 return 0; 70 } 71 72 #ifdef CONFIG_NET_RX_BUSY_POLL 73 /* must be called with local_bh_disable()d */ 74 static int mlx4_en_low_latency_recv(struct napi_struct *napi) 75 { 76 struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi); 77 struct net_device *dev = cq->dev; 78 struct mlx4_en_priv *priv = netdev_priv(dev); 79 struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring]; 80 int done; 81 82 if (!priv->port_up) 83 return LL_FLUSH_FAILED; 84 85 if (!mlx4_en_cq_lock_poll(cq)) 86 return LL_FLUSH_BUSY; 87 88 done = mlx4_en_process_rx_cq(dev, cq, 4); 89 if (likely(done)) 90 rx_ring->cleaned += done; 91 else 92 rx_ring->misses++; 93 94 mlx4_en_cq_unlock_poll(cq); 95 96 return done; 97 } 98 #endif /* CONFIG_NET_RX_BUSY_POLL */ 99 100 #ifdef CONFIG_RFS_ACCEL 101 102 struct mlx4_en_filter { 103 struct list_head next; 104 struct work_struct work; 105 106 u8 ip_proto; 107 __be32 src_ip; 108 __be32 dst_ip; 109 __be16 src_port; 110 __be16 dst_port; 111 112 int rxq_index; 113 struct mlx4_en_priv *priv; 114 u32 flow_id; /* RFS infrastructure id */ 115 int id; /* mlx4_en driver id */ 116 u64 reg_id; /* Flow steering API id */ 117 u8 activated; /* Used to prevent expiry before filter 118 * is attached 119 */ 120 struct hlist_node filter_chain; 121 }; 122 123 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv); 124 125 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto) 126 { 127 switch (ip_proto) { 128 case IPPROTO_UDP: 129 return MLX4_NET_TRANS_RULE_ID_UDP; 130 case IPPROTO_TCP: 131 return MLX4_NET_TRANS_RULE_ID_TCP; 132 default: 133 return MLX4_NET_TRANS_RULE_NUM; 134 } 135 }; 136 137 static void mlx4_en_filter_work(struct work_struct *work) 138 { 139 struct mlx4_en_filter *filter = container_of(work, 140 struct mlx4_en_filter, 141 work); 142 struct mlx4_en_priv *priv = filter->priv; 143 struct mlx4_spec_list spec_tcp_udp = { 144 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto), 145 { 146 .tcp_udp = { 147 .dst_port = filter->dst_port, 148 .dst_port_msk = (__force __be16)-1, 149 .src_port = filter->src_port, 150 .src_port_msk = (__force __be16)-1, 151 }, 152 }, 153 }; 154 struct mlx4_spec_list spec_ip = { 155 .id = MLX4_NET_TRANS_RULE_ID_IPV4, 156 { 157 .ipv4 = { 158 .dst_ip = filter->dst_ip, 159 .dst_ip_msk = (__force __be32)-1, 160 .src_ip = filter->src_ip, 161 .src_ip_msk = (__force __be32)-1, 162 }, 163 }, 164 }; 165 struct mlx4_spec_list spec_eth = { 166 .id = MLX4_NET_TRANS_RULE_ID_ETH, 167 }; 168 struct mlx4_net_trans_rule rule = { 169 .list = LIST_HEAD_INIT(rule.list), 170 .queue_mode = MLX4_NET_TRANS_Q_LIFO, 171 .exclusive = 1, 172 .allow_loopback = 1, 173 .promisc_mode = MLX4_FS_REGULAR, 174 .port = priv->port, 175 .priority = MLX4_DOMAIN_RFS, 176 }; 177 int rc; 178 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 179 180 if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) { 181 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n", 182 filter->ip_proto); 183 goto ignore; 184 } 185 list_add_tail(&spec_eth.list, &rule.list); 186 list_add_tail(&spec_ip.list, &rule.list); 187 list_add_tail(&spec_tcp_udp.list, &rule.list); 188 189 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn; 190 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN); 191 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 192 193 filter->activated = 0; 194 195 if (filter->reg_id) { 196 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 197 if (rc && rc != -ENOENT) 198 en_err(priv, "Error detaching flow. rc = %d\n", rc); 199 } 200 201 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id); 202 if (rc) 203 en_err(priv, "Error attaching flow. err = %d\n", rc); 204 205 ignore: 206 mlx4_en_filter_rfs_expire(priv); 207 208 filter->activated = 1; 209 } 210 211 static inline struct hlist_head * 212 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 213 __be16 src_port, __be16 dst_port) 214 { 215 unsigned long l; 216 int bucket_idx; 217 218 l = (__force unsigned long)src_port | 219 ((__force unsigned long)dst_port << 2); 220 l ^= (__force unsigned long)(src_ip ^ dst_ip); 221 222 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT); 223 224 return &priv->filter_hash[bucket_idx]; 225 } 226 227 static struct mlx4_en_filter * 228 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip, 229 __be32 dst_ip, u8 ip_proto, __be16 src_port, 230 __be16 dst_port, u32 flow_id) 231 { 232 struct mlx4_en_filter *filter = NULL; 233 234 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC); 235 if (!filter) 236 return NULL; 237 238 filter->priv = priv; 239 filter->rxq_index = rxq_index; 240 INIT_WORK(&filter->work, mlx4_en_filter_work); 241 242 filter->src_ip = src_ip; 243 filter->dst_ip = dst_ip; 244 filter->ip_proto = ip_proto; 245 filter->src_port = src_port; 246 filter->dst_port = dst_port; 247 248 filter->flow_id = flow_id; 249 250 filter->id = priv->last_filter_id++ % RPS_NO_FILTER; 251 252 list_add_tail(&filter->next, &priv->filters); 253 hlist_add_head(&filter->filter_chain, 254 filter_hash_bucket(priv, src_ip, dst_ip, src_port, 255 dst_port)); 256 257 return filter; 258 } 259 260 static void mlx4_en_filter_free(struct mlx4_en_filter *filter) 261 { 262 struct mlx4_en_priv *priv = filter->priv; 263 int rc; 264 265 list_del(&filter->next); 266 267 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 268 if (rc && rc != -ENOENT) 269 en_err(priv, "Error detaching flow. rc = %d\n", rc); 270 271 kfree(filter); 272 } 273 274 static inline struct mlx4_en_filter * 275 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 276 u8 ip_proto, __be16 src_port, __be16 dst_port) 277 { 278 struct mlx4_en_filter *filter; 279 struct mlx4_en_filter *ret = NULL; 280 281 hlist_for_each_entry(filter, 282 filter_hash_bucket(priv, src_ip, dst_ip, 283 src_port, dst_port), 284 filter_chain) { 285 if (filter->src_ip == src_ip && 286 filter->dst_ip == dst_ip && 287 filter->ip_proto == ip_proto && 288 filter->src_port == src_port && 289 filter->dst_port == dst_port) { 290 ret = filter; 291 break; 292 } 293 } 294 295 return ret; 296 } 297 298 static int 299 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 300 u16 rxq_index, u32 flow_id) 301 { 302 struct mlx4_en_priv *priv = netdev_priv(net_dev); 303 struct mlx4_en_filter *filter; 304 const struct iphdr *ip; 305 const __be16 *ports; 306 u8 ip_proto; 307 __be32 src_ip; 308 __be32 dst_ip; 309 __be16 src_port; 310 __be16 dst_port; 311 int nhoff = skb_network_offset(skb); 312 int ret = 0; 313 314 if (skb->protocol != htons(ETH_P_IP)) 315 return -EPROTONOSUPPORT; 316 317 ip = (const struct iphdr *)(skb->data + nhoff); 318 if (ip_is_fragment(ip)) 319 return -EPROTONOSUPPORT; 320 321 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP)) 322 return -EPROTONOSUPPORT; 323 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); 324 325 ip_proto = ip->protocol; 326 src_ip = ip->saddr; 327 dst_ip = ip->daddr; 328 src_port = ports[0]; 329 dst_port = ports[1]; 330 331 spin_lock_bh(&priv->filters_lock); 332 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto, 333 src_port, dst_port); 334 if (filter) { 335 if (filter->rxq_index == rxq_index) 336 goto out; 337 338 filter->rxq_index = rxq_index; 339 } else { 340 filter = mlx4_en_filter_alloc(priv, rxq_index, 341 src_ip, dst_ip, ip_proto, 342 src_port, dst_port, flow_id); 343 if (!filter) { 344 ret = -ENOMEM; 345 goto err; 346 } 347 } 348 349 queue_work(priv->mdev->workqueue, &filter->work); 350 351 out: 352 ret = filter->id; 353 err: 354 spin_unlock_bh(&priv->filters_lock); 355 356 return ret; 357 } 358 359 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv) 360 { 361 struct mlx4_en_filter *filter, *tmp; 362 LIST_HEAD(del_list); 363 364 spin_lock_bh(&priv->filters_lock); 365 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 366 list_move(&filter->next, &del_list); 367 hlist_del(&filter->filter_chain); 368 } 369 spin_unlock_bh(&priv->filters_lock); 370 371 list_for_each_entry_safe(filter, tmp, &del_list, next) { 372 cancel_work_sync(&filter->work); 373 mlx4_en_filter_free(filter); 374 } 375 } 376 377 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv) 378 { 379 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL; 380 LIST_HEAD(del_list); 381 int i = 0; 382 383 spin_lock_bh(&priv->filters_lock); 384 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 385 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA) 386 break; 387 388 if (filter->activated && 389 !work_pending(&filter->work) && 390 rps_may_expire_flow(priv->dev, 391 filter->rxq_index, filter->flow_id, 392 filter->id)) { 393 list_move(&filter->next, &del_list); 394 hlist_del(&filter->filter_chain); 395 } else 396 last_filter = filter; 397 398 i++; 399 } 400 401 if (last_filter && (&last_filter->next != priv->filters.next)) 402 list_move(&priv->filters, &last_filter->next); 403 404 spin_unlock_bh(&priv->filters_lock); 405 406 list_for_each_entry_safe(filter, tmp, &del_list, next) 407 mlx4_en_filter_free(filter); 408 } 409 #endif 410 411 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev, 412 __be16 proto, u16 vid) 413 { 414 struct mlx4_en_priv *priv = netdev_priv(dev); 415 struct mlx4_en_dev *mdev = priv->mdev; 416 int err; 417 int idx; 418 419 en_dbg(HW, priv, "adding VLAN:%d\n", vid); 420 421 set_bit(vid, priv->active_vlans); 422 423 /* Add VID to port VLAN filter */ 424 mutex_lock(&mdev->state_lock); 425 if (mdev->device_up && priv->port_up) { 426 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 427 if (err) 428 en_err(priv, "Failed configuring VLAN filter\n"); 429 } 430 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx)) 431 en_dbg(HW, priv, "failed adding vlan %d\n", vid); 432 mutex_unlock(&mdev->state_lock); 433 434 return 0; 435 } 436 437 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, 438 __be16 proto, u16 vid) 439 { 440 struct mlx4_en_priv *priv = netdev_priv(dev); 441 struct mlx4_en_dev *mdev = priv->mdev; 442 int err; 443 444 en_dbg(HW, priv, "Killing VID:%d\n", vid); 445 446 clear_bit(vid, priv->active_vlans); 447 448 /* Remove VID from port VLAN filter */ 449 mutex_lock(&mdev->state_lock); 450 mlx4_unregister_vlan(mdev->dev, priv->port, vid); 451 452 if (mdev->device_up && priv->port_up) { 453 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 454 if (err) 455 en_err(priv, "Failed configuring VLAN filter\n"); 456 } 457 mutex_unlock(&mdev->state_lock); 458 459 return 0; 460 } 461 462 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) 463 { 464 int i; 465 for (i = ETH_ALEN - 1; i >= 0; --i) { 466 dst_mac[i] = src_mac & 0xff; 467 src_mac >>= 8; 468 } 469 memset(&dst_mac[ETH_ALEN], 0, 2); 470 } 471 472 473 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr, 474 int qpn, u64 *reg_id) 475 { 476 int err; 477 478 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 479 return 0; /* do nothing */ 480 481 err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn, 482 MLX4_DOMAIN_NIC, reg_id); 483 if (err) { 484 en_err(priv, "failed to add vxlan steering rule, err %d\n", err); 485 return err; 486 } 487 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id); 488 return 0; 489 } 490 491 492 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv, 493 unsigned char *mac, int *qpn, u64 *reg_id) 494 { 495 struct mlx4_en_dev *mdev = priv->mdev; 496 struct mlx4_dev *dev = mdev->dev; 497 int err; 498 499 switch (dev->caps.steering_mode) { 500 case MLX4_STEERING_MODE_B0: { 501 struct mlx4_qp qp; 502 u8 gid[16] = {0}; 503 504 qp.qpn = *qpn; 505 memcpy(&gid[10], mac, ETH_ALEN); 506 gid[5] = priv->port; 507 508 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH); 509 break; 510 } 511 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 512 struct mlx4_spec_list spec_eth = { {NULL} }; 513 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 514 515 struct mlx4_net_trans_rule rule = { 516 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 517 .exclusive = 0, 518 .allow_loopback = 1, 519 .promisc_mode = MLX4_FS_REGULAR, 520 .priority = MLX4_DOMAIN_NIC, 521 }; 522 523 rule.port = priv->port; 524 rule.qpn = *qpn; 525 INIT_LIST_HEAD(&rule.list); 526 527 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH; 528 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN); 529 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 530 list_add_tail(&spec_eth.list, &rule.list); 531 532 err = mlx4_flow_attach(dev, &rule, reg_id); 533 break; 534 } 535 default: 536 return -EINVAL; 537 } 538 if (err) 539 en_warn(priv, "Failed Attaching Unicast\n"); 540 541 return err; 542 } 543 544 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv, 545 unsigned char *mac, int qpn, u64 reg_id) 546 { 547 struct mlx4_en_dev *mdev = priv->mdev; 548 struct mlx4_dev *dev = mdev->dev; 549 550 switch (dev->caps.steering_mode) { 551 case MLX4_STEERING_MODE_B0: { 552 struct mlx4_qp qp; 553 u8 gid[16] = {0}; 554 555 qp.qpn = qpn; 556 memcpy(&gid[10], mac, ETH_ALEN); 557 gid[5] = priv->port; 558 559 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH); 560 break; 561 } 562 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 563 mlx4_flow_detach(dev, reg_id); 564 break; 565 } 566 default: 567 en_err(priv, "Invalid steering mode.\n"); 568 } 569 } 570 571 static int mlx4_en_get_qp(struct mlx4_en_priv *priv) 572 { 573 struct mlx4_en_dev *mdev = priv->mdev; 574 struct mlx4_dev *dev = mdev->dev; 575 struct mlx4_mac_entry *entry; 576 int index = 0; 577 int err = 0; 578 u64 reg_id = 0; 579 int *qpn = &priv->base_qpn; 580 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 581 582 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n", 583 priv->dev->dev_addr); 584 index = mlx4_register_mac(dev, priv->port, mac); 585 if (index < 0) { 586 err = index; 587 en_err(priv, "Failed adding MAC: %pM\n", 588 priv->dev->dev_addr); 589 return err; 590 } 591 592 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 593 int base_qpn = mlx4_get_base_qpn(dev, priv->port); 594 *qpn = base_qpn + index; 595 return 0; 596 } 597 598 err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP); 599 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); 600 if (err) { 601 en_err(priv, "Failed to reserve qp for mac registration\n"); 602 goto qp_err; 603 } 604 605 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); 606 if (err) 607 goto steer_err; 608 609 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn, 610 &priv->tunnel_reg_id); 611 if (err) 612 goto tunnel_err; 613 614 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 615 if (!entry) { 616 err = -ENOMEM; 617 goto alloc_err; 618 } 619 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac)); 620 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac)); 621 entry->reg_id = reg_id; 622 623 hlist_add_head_rcu(&entry->hlist, 624 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); 625 626 return 0; 627 628 alloc_err: 629 if (priv->tunnel_reg_id) 630 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 631 tunnel_err: 632 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 633 634 steer_err: 635 mlx4_qp_release_range(dev, *qpn, 1); 636 637 qp_err: 638 mlx4_unregister_mac(dev, priv->port, mac); 639 return err; 640 } 641 642 static void mlx4_en_put_qp(struct mlx4_en_priv *priv) 643 { 644 struct mlx4_en_dev *mdev = priv->mdev; 645 struct mlx4_dev *dev = mdev->dev; 646 int qpn = priv->base_qpn; 647 u64 mac; 648 649 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 650 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 651 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 652 priv->dev->dev_addr); 653 mlx4_unregister_mac(dev, priv->port, mac); 654 } else { 655 struct mlx4_mac_entry *entry; 656 struct hlist_node *tmp; 657 struct hlist_head *bucket; 658 unsigned int i; 659 660 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 661 bucket = &priv->mac_hash[i]; 662 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 663 mac = mlx4_mac_to_u64(entry->mac); 664 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 665 entry->mac); 666 mlx4_en_uc_steer_release(priv, entry->mac, 667 qpn, entry->reg_id); 668 669 mlx4_unregister_mac(dev, priv->port, mac); 670 hlist_del_rcu(&entry->hlist); 671 kfree_rcu(entry, rcu); 672 } 673 } 674 675 if (priv->tunnel_reg_id) { 676 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 677 priv->tunnel_reg_id = 0; 678 } 679 680 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", 681 priv->port, qpn); 682 mlx4_qp_release_range(dev, qpn, 1); 683 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 684 } 685 } 686 687 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, 688 unsigned char *new_mac, unsigned char *prev_mac) 689 { 690 struct mlx4_en_dev *mdev = priv->mdev; 691 struct mlx4_dev *dev = mdev->dev; 692 int err = 0; 693 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac); 694 695 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { 696 struct hlist_head *bucket; 697 unsigned int mac_hash; 698 struct mlx4_mac_entry *entry; 699 struct hlist_node *tmp; 700 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac); 701 702 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; 703 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 704 if (ether_addr_equal_64bits(entry->mac, prev_mac)) { 705 mlx4_en_uc_steer_release(priv, entry->mac, 706 qpn, entry->reg_id); 707 mlx4_unregister_mac(dev, priv->port, 708 prev_mac_u64); 709 hlist_del_rcu(&entry->hlist); 710 synchronize_rcu(); 711 memcpy(entry->mac, new_mac, ETH_ALEN); 712 entry->reg_id = 0; 713 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; 714 hlist_add_head_rcu(&entry->hlist, 715 &priv->mac_hash[mac_hash]); 716 mlx4_register_mac(dev, priv->port, new_mac_u64); 717 err = mlx4_en_uc_steer_add(priv, new_mac, 718 &qpn, 719 &entry->reg_id); 720 if (err) 721 return err; 722 if (priv->tunnel_reg_id) { 723 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 724 priv->tunnel_reg_id = 0; 725 } 726 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn, 727 &priv->tunnel_reg_id); 728 return err; 729 } 730 } 731 return -EINVAL; 732 } 733 734 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); 735 } 736 737 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv, 738 unsigned char new_mac[ETH_ALEN + 2]) 739 { 740 int err = 0; 741 742 if (priv->port_up) { 743 /* Remove old MAC and insert the new one */ 744 err = mlx4_en_replace_mac(priv, priv->base_qpn, 745 new_mac, priv->current_mac); 746 if (err) 747 en_err(priv, "Failed changing HW MAC address\n"); 748 } else 749 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); 750 751 if (!err) 752 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac)); 753 754 return err; 755 } 756 757 static int mlx4_en_set_mac(struct net_device *dev, void *addr) 758 { 759 struct mlx4_en_priv *priv = netdev_priv(dev); 760 struct mlx4_en_dev *mdev = priv->mdev; 761 struct sockaddr *saddr = addr; 762 unsigned char new_mac[ETH_ALEN + 2]; 763 int err; 764 765 if (!is_valid_ether_addr(saddr->sa_data)) 766 return -EADDRNOTAVAIL; 767 768 mutex_lock(&mdev->state_lock); 769 memcpy(new_mac, saddr->sa_data, ETH_ALEN); 770 err = mlx4_en_do_set_mac(priv, new_mac); 771 if (!err) 772 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); 773 mutex_unlock(&mdev->state_lock); 774 775 return err; 776 } 777 778 static void mlx4_en_clear_list(struct net_device *dev) 779 { 780 struct mlx4_en_priv *priv = netdev_priv(dev); 781 struct mlx4_en_mc_list *tmp, *mc_to_del; 782 783 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { 784 list_del(&mc_to_del->list); 785 kfree(mc_to_del); 786 } 787 } 788 789 static void mlx4_en_cache_mclist(struct net_device *dev) 790 { 791 struct mlx4_en_priv *priv = netdev_priv(dev); 792 struct netdev_hw_addr *ha; 793 struct mlx4_en_mc_list *tmp; 794 795 mlx4_en_clear_list(dev); 796 netdev_for_each_mc_addr(ha, dev) { 797 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); 798 if (!tmp) { 799 mlx4_en_clear_list(dev); 800 return; 801 } 802 memcpy(tmp->addr, ha->addr, ETH_ALEN); 803 list_add_tail(&tmp->list, &priv->mc_list); 804 } 805 } 806 807 static void update_mclist_flags(struct mlx4_en_priv *priv, 808 struct list_head *dst, 809 struct list_head *src) 810 { 811 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; 812 bool found; 813 814 /* Find all the entries that should be removed from dst, 815 * These are the entries that are not found in src 816 */ 817 list_for_each_entry(dst_tmp, dst, list) { 818 found = false; 819 list_for_each_entry(src_tmp, src, list) { 820 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 821 found = true; 822 break; 823 } 824 } 825 if (!found) 826 dst_tmp->action = MCLIST_REM; 827 } 828 829 /* Add entries that exist in src but not in dst 830 * mark them as need to add 831 */ 832 list_for_each_entry(src_tmp, src, list) { 833 found = false; 834 list_for_each_entry(dst_tmp, dst, list) { 835 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 836 dst_tmp->action = MCLIST_NONE; 837 found = true; 838 break; 839 } 840 } 841 if (!found) { 842 new_mc = kmemdup(src_tmp, 843 sizeof(struct mlx4_en_mc_list), 844 GFP_KERNEL); 845 if (!new_mc) 846 return; 847 848 new_mc->action = MCLIST_ADD; 849 list_add_tail(&new_mc->list, dst); 850 } 851 } 852 } 853 854 static void mlx4_en_set_rx_mode(struct net_device *dev) 855 { 856 struct mlx4_en_priv *priv = netdev_priv(dev); 857 858 if (!priv->port_up) 859 return; 860 861 queue_work(priv->mdev->workqueue, &priv->rx_mode_task); 862 } 863 864 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, 865 struct mlx4_en_dev *mdev) 866 { 867 int err = 0; 868 869 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { 870 if (netif_msg_rx_status(priv)) 871 en_warn(priv, "Entering promiscuous mode\n"); 872 priv->flags |= MLX4_EN_FLAG_PROMISC; 873 874 /* Enable promiscouos mode */ 875 switch (mdev->dev->caps.steering_mode) { 876 case MLX4_STEERING_MODE_DEVICE_MANAGED: 877 err = mlx4_flow_steer_promisc_add(mdev->dev, 878 priv->port, 879 priv->base_qpn, 880 MLX4_FS_ALL_DEFAULT); 881 if (err) 882 en_err(priv, "Failed enabling promiscuous mode\n"); 883 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 884 break; 885 886 case MLX4_STEERING_MODE_B0: 887 err = mlx4_unicast_promisc_add(mdev->dev, 888 priv->base_qpn, 889 priv->port); 890 if (err) 891 en_err(priv, "Failed enabling unicast promiscuous mode\n"); 892 893 /* Add the default qp number as multicast 894 * promisc 895 */ 896 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 897 err = mlx4_multicast_promisc_add(mdev->dev, 898 priv->base_qpn, 899 priv->port); 900 if (err) 901 en_err(priv, "Failed enabling multicast promiscuous mode\n"); 902 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 903 } 904 break; 905 906 case MLX4_STEERING_MODE_A0: 907 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 908 priv->port, 909 priv->base_qpn, 910 1); 911 if (err) 912 en_err(priv, "Failed enabling promiscuous mode\n"); 913 break; 914 } 915 916 /* Disable port multicast filter (unconditionally) */ 917 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 918 0, MLX4_MCAST_DISABLE); 919 if (err) 920 en_err(priv, "Failed disabling multicast filter\n"); 921 } 922 } 923 924 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv, 925 struct mlx4_en_dev *mdev) 926 { 927 int err = 0; 928 929 if (netif_msg_rx_status(priv)) 930 en_warn(priv, "Leaving promiscuous mode\n"); 931 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 932 933 /* Disable promiscouos mode */ 934 switch (mdev->dev->caps.steering_mode) { 935 case MLX4_STEERING_MODE_DEVICE_MANAGED: 936 err = mlx4_flow_steer_promisc_remove(mdev->dev, 937 priv->port, 938 MLX4_FS_ALL_DEFAULT); 939 if (err) 940 en_err(priv, "Failed disabling promiscuous mode\n"); 941 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 942 break; 943 944 case MLX4_STEERING_MODE_B0: 945 err = mlx4_unicast_promisc_remove(mdev->dev, 946 priv->base_qpn, 947 priv->port); 948 if (err) 949 en_err(priv, "Failed disabling unicast promiscuous mode\n"); 950 /* Disable Multicast promisc */ 951 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 952 err = mlx4_multicast_promisc_remove(mdev->dev, 953 priv->base_qpn, 954 priv->port); 955 if (err) 956 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 957 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 958 } 959 break; 960 961 case MLX4_STEERING_MODE_A0: 962 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 963 priv->port, 964 priv->base_qpn, 0); 965 if (err) 966 en_err(priv, "Failed disabling promiscuous mode\n"); 967 break; 968 } 969 } 970 971 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, 972 struct net_device *dev, 973 struct mlx4_en_dev *mdev) 974 { 975 struct mlx4_en_mc_list *mclist, *tmp; 976 u64 mcast_addr = 0; 977 u8 mc_list[16] = {0}; 978 int err = 0; 979 980 /* Enable/disable the multicast filter according to IFF_ALLMULTI */ 981 if (dev->flags & IFF_ALLMULTI) { 982 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 983 0, MLX4_MCAST_DISABLE); 984 if (err) 985 en_err(priv, "Failed disabling multicast filter\n"); 986 987 /* Add the default qp number as multicast promisc */ 988 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 989 switch (mdev->dev->caps.steering_mode) { 990 case MLX4_STEERING_MODE_DEVICE_MANAGED: 991 err = mlx4_flow_steer_promisc_add(mdev->dev, 992 priv->port, 993 priv->base_qpn, 994 MLX4_FS_MC_DEFAULT); 995 break; 996 997 case MLX4_STEERING_MODE_B0: 998 err = mlx4_multicast_promisc_add(mdev->dev, 999 priv->base_qpn, 1000 priv->port); 1001 break; 1002 1003 case MLX4_STEERING_MODE_A0: 1004 break; 1005 } 1006 if (err) 1007 en_err(priv, "Failed entering multicast promisc mode\n"); 1008 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 1009 } 1010 } else { 1011 /* Disable Multicast promisc */ 1012 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1013 switch (mdev->dev->caps.steering_mode) { 1014 case MLX4_STEERING_MODE_DEVICE_MANAGED: 1015 err = mlx4_flow_steer_promisc_remove(mdev->dev, 1016 priv->port, 1017 MLX4_FS_MC_DEFAULT); 1018 break; 1019 1020 case MLX4_STEERING_MODE_B0: 1021 err = mlx4_multicast_promisc_remove(mdev->dev, 1022 priv->base_qpn, 1023 priv->port); 1024 break; 1025 1026 case MLX4_STEERING_MODE_A0: 1027 break; 1028 } 1029 if (err) 1030 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 1031 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1032 } 1033 1034 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1035 0, MLX4_MCAST_DISABLE); 1036 if (err) 1037 en_err(priv, "Failed disabling multicast filter\n"); 1038 1039 /* Flush mcast filter and init it with broadcast address */ 1040 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, 1041 1, MLX4_MCAST_CONFIG); 1042 1043 /* Update multicast list - we cache all addresses so they won't 1044 * change while HW is updated holding the command semaphor */ 1045 netif_addr_lock_bh(dev); 1046 mlx4_en_cache_mclist(dev); 1047 netif_addr_unlock_bh(dev); 1048 list_for_each_entry(mclist, &priv->mc_list, list) { 1049 mcast_addr = mlx4_mac_to_u64(mclist->addr); 1050 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 1051 mcast_addr, 0, MLX4_MCAST_CONFIG); 1052 } 1053 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1054 0, MLX4_MCAST_ENABLE); 1055 if (err) 1056 en_err(priv, "Failed enabling multicast filter\n"); 1057 1058 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); 1059 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1060 if (mclist->action == MCLIST_REM) { 1061 /* detach this address and delete from list */ 1062 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1063 mc_list[5] = priv->port; 1064 err = mlx4_multicast_detach(mdev->dev, 1065 &priv->rss_map.indir_qp, 1066 mc_list, 1067 MLX4_PROT_ETH, 1068 mclist->reg_id); 1069 if (err) 1070 en_err(priv, "Fail to detach multicast address\n"); 1071 1072 if (mclist->tunnel_reg_id) { 1073 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id); 1074 if (err) 1075 en_err(priv, "Failed to detach multicast address\n"); 1076 } 1077 1078 /* remove from list */ 1079 list_del(&mclist->list); 1080 kfree(mclist); 1081 } else if (mclist->action == MCLIST_ADD) { 1082 /* attach the address */ 1083 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1084 /* needed for B0 steering support */ 1085 mc_list[5] = priv->port; 1086 err = mlx4_multicast_attach(mdev->dev, 1087 &priv->rss_map.indir_qp, 1088 mc_list, 1089 priv->port, 0, 1090 MLX4_PROT_ETH, 1091 &mclist->reg_id); 1092 if (err) 1093 en_err(priv, "Fail to attach multicast address\n"); 1094 1095 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn, 1096 &mclist->tunnel_reg_id); 1097 if (err) 1098 en_err(priv, "Failed to attach multicast address\n"); 1099 } 1100 } 1101 } 1102 } 1103 1104 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, 1105 struct net_device *dev, 1106 struct mlx4_en_dev *mdev) 1107 { 1108 struct netdev_hw_addr *ha; 1109 struct mlx4_mac_entry *entry; 1110 struct hlist_node *tmp; 1111 bool found; 1112 u64 mac; 1113 int err = 0; 1114 struct hlist_head *bucket; 1115 unsigned int i; 1116 int removed = 0; 1117 u32 prev_flags; 1118 1119 /* Note that we do not need to protect our mac_hash traversal with rcu, 1120 * since all modification code is protected by mdev->state_lock 1121 */ 1122 1123 /* find what to remove */ 1124 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1125 bucket = &priv->mac_hash[i]; 1126 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1127 found = false; 1128 netdev_for_each_uc_addr(ha, dev) { 1129 if (ether_addr_equal_64bits(entry->mac, 1130 ha->addr)) { 1131 found = true; 1132 break; 1133 } 1134 } 1135 1136 /* MAC address of the port is not in uc list */ 1137 if (ether_addr_equal_64bits(entry->mac, 1138 priv->current_mac)) 1139 found = true; 1140 1141 if (!found) { 1142 mac = mlx4_mac_to_u64(entry->mac); 1143 mlx4_en_uc_steer_release(priv, entry->mac, 1144 priv->base_qpn, 1145 entry->reg_id); 1146 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1147 1148 hlist_del_rcu(&entry->hlist); 1149 kfree_rcu(entry, rcu); 1150 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", 1151 entry->mac, priv->port); 1152 ++removed; 1153 } 1154 } 1155 } 1156 1157 /* if we didn't remove anything, there is no use in trying to add 1158 * again once we are in a forced promisc mode state 1159 */ 1160 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) 1161 return; 1162 1163 prev_flags = priv->flags; 1164 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 1165 1166 /* find what to add */ 1167 netdev_for_each_uc_addr(ha, dev) { 1168 found = false; 1169 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; 1170 hlist_for_each_entry(entry, bucket, hlist) { 1171 if (ether_addr_equal_64bits(entry->mac, ha->addr)) { 1172 found = true; 1173 break; 1174 } 1175 } 1176 1177 if (!found) { 1178 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1179 if (!entry) { 1180 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", 1181 ha->addr, priv->port); 1182 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1183 break; 1184 } 1185 mac = mlx4_mac_to_u64(ha->addr); 1186 memcpy(entry->mac, ha->addr, ETH_ALEN); 1187 err = mlx4_register_mac(mdev->dev, priv->port, mac); 1188 if (err < 0) { 1189 en_err(priv, "Failed registering MAC %pM on port %d: %d\n", 1190 ha->addr, priv->port, err); 1191 kfree(entry); 1192 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1193 break; 1194 } 1195 err = mlx4_en_uc_steer_add(priv, ha->addr, 1196 &priv->base_qpn, 1197 &entry->reg_id); 1198 if (err) { 1199 en_err(priv, "Failed adding MAC %pM on port %d: %d\n", 1200 ha->addr, priv->port, err); 1201 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1202 kfree(entry); 1203 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1204 break; 1205 } else { 1206 unsigned int mac_hash; 1207 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", 1208 ha->addr, priv->port); 1209 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; 1210 bucket = &priv->mac_hash[mac_hash]; 1211 hlist_add_head_rcu(&entry->hlist, bucket); 1212 } 1213 } 1214 } 1215 1216 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1217 en_warn(priv, "Forcing promiscuous mode on port:%d\n", 1218 priv->port); 1219 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1220 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", 1221 priv->port); 1222 } 1223 } 1224 1225 static void mlx4_en_do_set_rx_mode(struct work_struct *work) 1226 { 1227 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1228 rx_mode_task); 1229 struct mlx4_en_dev *mdev = priv->mdev; 1230 struct net_device *dev = priv->dev; 1231 1232 mutex_lock(&mdev->state_lock); 1233 if (!mdev->device_up) { 1234 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); 1235 goto out; 1236 } 1237 if (!priv->port_up) { 1238 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); 1239 goto out; 1240 } 1241 1242 if (!netif_carrier_ok(dev)) { 1243 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { 1244 if (priv->port_state.link_state) { 1245 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; 1246 netif_carrier_on(dev); 1247 en_dbg(LINK, priv, "Link Up\n"); 1248 } 1249 } 1250 } 1251 1252 if (dev->priv_flags & IFF_UNICAST_FLT) 1253 mlx4_en_do_uc_filter(priv, dev, mdev); 1254 1255 /* Promsicuous mode: disable all filters */ 1256 if ((dev->flags & IFF_PROMISC) || 1257 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { 1258 mlx4_en_set_promisc_mode(priv, mdev); 1259 goto out; 1260 } 1261 1262 /* Not in promiscuous mode */ 1263 if (priv->flags & MLX4_EN_FLAG_PROMISC) 1264 mlx4_en_clear_promisc_mode(priv, mdev); 1265 1266 mlx4_en_do_multicast(priv, dev, mdev); 1267 out: 1268 mutex_unlock(&mdev->state_lock); 1269 } 1270 1271 #ifdef CONFIG_NET_POLL_CONTROLLER 1272 static void mlx4_en_netpoll(struct net_device *dev) 1273 { 1274 struct mlx4_en_priv *priv = netdev_priv(dev); 1275 struct mlx4_en_cq *cq; 1276 int i; 1277 1278 for (i = 0; i < priv->rx_ring_num; i++) { 1279 cq = priv->rx_cq[i]; 1280 napi_schedule(&cq->napi); 1281 } 1282 } 1283 #endif 1284 1285 static void mlx4_en_tx_timeout(struct net_device *dev) 1286 { 1287 struct mlx4_en_priv *priv = netdev_priv(dev); 1288 struct mlx4_en_dev *mdev = priv->mdev; 1289 int i; 1290 1291 if (netif_msg_timer(priv)) 1292 en_warn(priv, "Tx timeout called on port:%d\n", priv->port); 1293 1294 for (i = 0; i < priv->tx_ring_num; i++) { 1295 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) 1296 continue; 1297 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", 1298 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn, 1299 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod); 1300 } 1301 1302 priv->port_stats.tx_timeout++; 1303 en_dbg(DRV, priv, "Scheduling watchdog\n"); 1304 queue_work(mdev->workqueue, &priv->watchdog_task); 1305 } 1306 1307 1308 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev) 1309 { 1310 struct mlx4_en_priv *priv = netdev_priv(dev); 1311 1312 spin_lock_bh(&priv->stats_lock); 1313 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats)); 1314 spin_unlock_bh(&priv->stats_lock); 1315 1316 return &priv->ret_stats; 1317 } 1318 1319 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1320 { 1321 struct mlx4_en_cq *cq; 1322 int i; 1323 1324 /* If we haven't received a specific coalescing setting 1325 * (module param), we set the moderation parameters as follows: 1326 * - moder_cnt is set to the number of mtu sized packets to 1327 * satisfy our coalescing target. 1328 * - moder_time is set to a fixed value. 1329 */ 1330 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1331 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1332 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1333 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1334 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1335 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1336 1337 /* Setup cq moderation params */ 1338 for (i = 0; i < priv->rx_ring_num; i++) { 1339 cq = priv->rx_cq[i]; 1340 cq->moder_cnt = priv->rx_frames; 1341 cq->moder_time = priv->rx_usecs; 1342 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1343 priv->last_moder_packets[i] = 0; 1344 priv->last_moder_bytes[i] = 0; 1345 } 1346 1347 for (i = 0; i < priv->tx_ring_num; i++) { 1348 cq = priv->tx_cq[i]; 1349 cq->moder_cnt = priv->tx_frames; 1350 cq->moder_time = priv->tx_usecs; 1351 } 1352 1353 /* Reset auto-moderation params */ 1354 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1355 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1356 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1357 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1358 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1359 priv->adaptive_rx_coal = 1; 1360 priv->last_moder_jiffies = 0; 1361 priv->last_moder_tx_packets = 0; 1362 } 1363 1364 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1365 { 1366 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1367 struct mlx4_en_cq *cq; 1368 unsigned long packets; 1369 unsigned long rate; 1370 unsigned long avg_pkt_size; 1371 unsigned long rx_packets; 1372 unsigned long rx_bytes; 1373 unsigned long rx_pkt_diff; 1374 int moder_time; 1375 int ring, err; 1376 1377 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1378 return; 1379 1380 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1381 spin_lock_bh(&priv->stats_lock); 1382 rx_packets = priv->rx_ring[ring]->packets; 1383 rx_bytes = priv->rx_ring[ring]->bytes; 1384 spin_unlock_bh(&priv->stats_lock); 1385 1386 rx_pkt_diff = ((unsigned long) (rx_packets - 1387 priv->last_moder_packets[ring])); 1388 packets = rx_pkt_diff; 1389 rate = packets * HZ / period; 1390 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1391 priv->last_moder_bytes[ring])) / packets : 0; 1392 1393 /* Apply auto-moderation only when packet rate 1394 * exceeds a rate that it matters */ 1395 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1396 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1397 if (rate < priv->pkt_rate_low) 1398 moder_time = priv->rx_usecs_low; 1399 else if (rate > priv->pkt_rate_high) 1400 moder_time = priv->rx_usecs_high; 1401 else 1402 moder_time = (rate - priv->pkt_rate_low) * 1403 (priv->rx_usecs_high - priv->rx_usecs_low) / 1404 (priv->pkt_rate_high - priv->pkt_rate_low) + 1405 priv->rx_usecs_low; 1406 } else { 1407 moder_time = priv->rx_usecs_low; 1408 } 1409 1410 if (moder_time != priv->last_moder_time[ring]) { 1411 priv->last_moder_time[ring] = moder_time; 1412 cq = priv->rx_cq[ring]; 1413 cq->moder_time = moder_time; 1414 cq->moder_cnt = priv->rx_frames; 1415 err = mlx4_en_set_cq_moder(priv, cq); 1416 if (err) 1417 en_err(priv, "Failed modifying moderation for cq:%d\n", 1418 ring); 1419 } 1420 priv->last_moder_packets[ring] = rx_packets; 1421 priv->last_moder_bytes[ring] = rx_bytes; 1422 } 1423 1424 priv->last_moder_jiffies = jiffies; 1425 } 1426 1427 static void mlx4_en_do_get_stats(struct work_struct *work) 1428 { 1429 struct delayed_work *delay = to_delayed_work(work); 1430 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1431 stats_task); 1432 struct mlx4_en_dev *mdev = priv->mdev; 1433 int err; 1434 1435 mutex_lock(&mdev->state_lock); 1436 if (mdev->device_up) { 1437 if (priv->port_up) { 1438 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1439 if (err) 1440 en_dbg(HW, priv, "Could not update stats\n"); 1441 1442 mlx4_en_auto_moderation(priv); 1443 } 1444 1445 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1446 } 1447 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1448 mlx4_en_do_set_mac(priv, priv->current_mac); 1449 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1450 } 1451 mutex_unlock(&mdev->state_lock); 1452 } 1453 1454 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1455 * periodically 1456 */ 1457 static void mlx4_en_service_task(struct work_struct *work) 1458 { 1459 struct delayed_work *delay = to_delayed_work(work); 1460 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1461 service_task); 1462 struct mlx4_en_dev *mdev = priv->mdev; 1463 1464 mutex_lock(&mdev->state_lock); 1465 if (mdev->device_up) { 1466 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1467 mlx4_en_ptp_overflow_check(mdev); 1468 1469 queue_delayed_work(mdev->workqueue, &priv->service_task, 1470 SERVICE_TASK_DELAY); 1471 } 1472 mutex_unlock(&mdev->state_lock); 1473 } 1474 1475 static void mlx4_en_linkstate(struct work_struct *work) 1476 { 1477 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1478 linkstate_task); 1479 struct mlx4_en_dev *mdev = priv->mdev; 1480 int linkstate = priv->link_state; 1481 1482 mutex_lock(&mdev->state_lock); 1483 /* If observable port state changed set carrier state and 1484 * report to system log */ 1485 if (priv->last_link_state != linkstate) { 1486 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1487 en_info(priv, "Link Down\n"); 1488 netif_carrier_off(priv->dev); 1489 } else { 1490 en_info(priv, "Link Up\n"); 1491 netif_carrier_on(priv->dev); 1492 } 1493 } 1494 priv->last_link_state = linkstate; 1495 mutex_unlock(&mdev->state_lock); 1496 } 1497 1498 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1499 { 1500 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx]; 1501 int numa_node = priv->mdev->dev->numa_node; 1502 int ret = 0; 1503 1504 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL)) 1505 return -ENOMEM; 1506 1507 ret = cpumask_set_cpu_local_first(ring_idx, numa_node, 1508 ring->affinity_mask); 1509 if (ret) 1510 free_cpumask_var(ring->affinity_mask); 1511 1512 return ret; 1513 } 1514 1515 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1516 { 1517 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask); 1518 } 1519 1520 int mlx4_en_start_port(struct net_device *dev) 1521 { 1522 struct mlx4_en_priv *priv = netdev_priv(dev); 1523 struct mlx4_en_dev *mdev = priv->mdev; 1524 struct mlx4_en_cq *cq; 1525 struct mlx4_en_tx_ring *tx_ring; 1526 int rx_index = 0; 1527 int tx_index = 0; 1528 int err = 0; 1529 int i; 1530 int j; 1531 u8 mc_list[16] = {0}; 1532 1533 if (priv->port_up) { 1534 en_dbg(DRV, priv, "start port called while port already up\n"); 1535 return 0; 1536 } 1537 1538 INIT_LIST_HEAD(&priv->mc_list); 1539 INIT_LIST_HEAD(&priv->curr_list); 1540 INIT_LIST_HEAD(&priv->ethtool_list); 1541 memset(&priv->ethtool_rules[0], 0, 1542 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1543 1544 /* Calculate Rx buf size */ 1545 dev->mtu = min(dev->mtu, priv->max_mtu); 1546 mlx4_en_calc_rx_buf(dev); 1547 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1548 1549 /* Configure rx cq's and rings */ 1550 err = mlx4_en_activate_rx_rings(priv); 1551 if (err) { 1552 en_err(priv, "Failed to activate RX rings\n"); 1553 return err; 1554 } 1555 for (i = 0; i < priv->rx_ring_num; i++) { 1556 cq = priv->rx_cq[i]; 1557 1558 mlx4_en_cq_init_lock(cq); 1559 1560 err = mlx4_en_init_affinity_hint(priv, i); 1561 if (err) { 1562 en_err(priv, "Failed preparing IRQ affinity hint\n"); 1563 goto cq_err; 1564 } 1565 1566 err = mlx4_en_activate_cq(priv, cq, i); 1567 if (err) { 1568 en_err(priv, "Failed activating Rx CQ\n"); 1569 mlx4_en_free_affinity_hint(priv, i); 1570 goto cq_err; 1571 } 1572 for (j = 0; j < cq->size; j++) 1573 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1574 err = mlx4_en_set_cq_moder(priv, cq); 1575 if (err) { 1576 en_err(priv, "Failed setting cq moderation parameters\n"); 1577 mlx4_en_deactivate_cq(priv, cq); 1578 mlx4_en_free_affinity_hint(priv, i); 1579 goto cq_err; 1580 } 1581 mlx4_en_arm_cq(priv, cq); 1582 priv->rx_ring[i]->cqn = cq->mcq.cqn; 1583 ++rx_index; 1584 } 1585 1586 /* Set qp number */ 1587 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1588 err = mlx4_en_get_qp(priv); 1589 if (err) { 1590 en_err(priv, "Failed getting eth qp\n"); 1591 goto cq_err; 1592 } 1593 mdev->mac_removed[priv->port] = 0; 1594 1595 err = mlx4_en_config_rss_steer(priv); 1596 if (err) { 1597 en_err(priv, "Failed configuring rss steering\n"); 1598 goto mac_err; 1599 } 1600 1601 err = mlx4_en_create_drop_qp(priv); 1602 if (err) 1603 goto rss_err; 1604 1605 /* Configure tx cq's and rings */ 1606 for (i = 0; i < priv->tx_ring_num; i++) { 1607 /* Configure cq */ 1608 cq = priv->tx_cq[i]; 1609 err = mlx4_en_activate_cq(priv, cq, i); 1610 if (err) { 1611 en_err(priv, "Failed allocating Tx CQ\n"); 1612 goto tx_err; 1613 } 1614 err = mlx4_en_set_cq_moder(priv, cq); 1615 if (err) { 1616 en_err(priv, "Failed setting cq moderation parameters\n"); 1617 mlx4_en_deactivate_cq(priv, cq); 1618 goto tx_err; 1619 } 1620 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i); 1621 cq->buf->wqe_index = cpu_to_be16(0xffff); 1622 1623 /* Configure ring */ 1624 tx_ring = priv->tx_ring[i]; 1625 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, 1626 i / priv->num_tx_rings_p_up); 1627 if (err) { 1628 en_err(priv, "Failed allocating Tx ring\n"); 1629 mlx4_en_deactivate_cq(priv, cq); 1630 goto tx_err; 1631 } 1632 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1633 1634 /* Arm CQ for TX completions */ 1635 mlx4_en_arm_cq(priv, cq); 1636 1637 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1638 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1639 *((u32 *) (tx_ring->buf + j)) = 0xffffffff; 1640 ++tx_index; 1641 } 1642 1643 /* Configure port */ 1644 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1645 priv->rx_skb_size + ETH_FCS_LEN, 1646 priv->prof->tx_pause, 1647 priv->prof->tx_ppp, 1648 priv->prof->rx_pause, 1649 priv->prof->rx_ppp); 1650 if (err) { 1651 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1652 priv->port, err); 1653 goto tx_err; 1654 } 1655 /* Set default qp number */ 1656 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1657 if (err) { 1658 en_err(priv, "Failed setting default qp numbers\n"); 1659 goto tx_err; 1660 } 1661 1662 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 1663 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 1664 if (err) { 1665 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 1666 err); 1667 goto tx_err; 1668 } 1669 } 1670 1671 /* Init port */ 1672 en_dbg(HW, priv, "Initializing port\n"); 1673 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1674 if (err) { 1675 en_err(priv, "Failed Initializing port\n"); 1676 goto tx_err; 1677 } 1678 1679 /* Attach rx QP to bradcast address */ 1680 memset(&mc_list[10], 0xff, ETH_ALEN); 1681 mc_list[5] = priv->port; /* needed for B0 steering support */ 1682 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1683 priv->port, 0, MLX4_PROT_ETH, 1684 &priv->broadcast_id)) 1685 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1686 1687 /* Must redo promiscuous mode setup. */ 1688 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1689 1690 /* Schedule multicast task to populate multicast list */ 1691 queue_work(mdev->workqueue, &priv->rx_mode_task); 1692 1693 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap); 1694 1695 #ifdef CONFIG_MLX4_EN_VXLAN 1696 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 1697 vxlan_get_rx_port(dev); 1698 #endif 1699 priv->port_up = true; 1700 netif_tx_start_all_queues(dev); 1701 netif_device_attach(dev); 1702 1703 return 0; 1704 1705 tx_err: 1706 while (tx_index--) { 1707 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]); 1708 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]); 1709 } 1710 mlx4_en_destroy_drop_qp(priv); 1711 rss_err: 1712 mlx4_en_release_rss_steer(priv); 1713 mac_err: 1714 mlx4_en_put_qp(priv); 1715 cq_err: 1716 while (rx_index--) { 1717 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); 1718 mlx4_en_free_affinity_hint(priv, i); 1719 } 1720 for (i = 0; i < priv->rx_ring_num; i++) 1721 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1722 1723 return err; /* need to close devices */ 1724 } 1725 1726 1727 void mlx4_en_stop_port(struct net_device *dev, int detach) 1728 { 1729 struct mlx4_en_priv *priv = netdev_priv(dev); 1730 struct mlx4_en_dev *mdev = priv->mdev; 1731 struct mlx4_en_mc_list *mclist, *tmp; 1732 struct ethtool_flow_id *flow, *tmp_flow; 1733 int i; 1734 u8 mc_list[16] = {0}; 1735 1736 if (!priv->port_up) { 1737 en_dbg(DRV, priv, "stop port called while port already down\n"); 1738 return; 1739 } 1740 1741 /* close port*/ 1742 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1743 1744 /* Synchronize with tx routine */ 1745 netif_tx_lock_bh(dev); 1746 if (detach) 1747 netif_device_detach(dev); 1748 netif_tx_stop_all_queues(dev); 1749 netif_tx_unlock_bh(dev); 1750 1751 netif_tx_disable(dev); 1752 1753 /* Set port as not active */ 1754 priv->port_up = false; 1755 1756 /* Promsicuous mode */ 1757 if (mdev->dev->caps.steering_mode == 1758 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1759 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | 1760 MLX4_EN_FLAG_MC_PROMISC); 1761 mlx4_flow_steer_promisc_remove(mdev->dev, 1762 priv->port, 1763 MLX4_FS_ALL_DEFAULT); 1764 mlx4_flow_steer_promisc_remove(mdev->dev, 1765 priv->port, 1766 MLX4_FS_MC_DEFAULT); 1767 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { 1768 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 1769 1770 /* Disable promiscouos mode */ 1771 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, 1772 priv->port); 1773 1774 /* Disable Multicast promisc */ 1775 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1776 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, 1777 priv->port); 1778 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1779 } 1780 } 1781 1782 /* Detach All multicasts */ 1783 memset(&mc_list[10], 0xff, ETH_ALEN); 1784 mc_list[5] = priv->port; /* needed for B0 steering support */ 1785 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1786 MLX4_PROT_ETH, priv->broadcast_id); 1787 list_for_each_entry(mclist, &priv->curr_list, list) { 1788 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1789 mc_list[5] = priv->port; 1790 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, 1791 mc_list, MLX4_PROT_ETH, mclist->reg_id); 1792 if (mclist->tunnel_reg_id) 1793 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id); 1794 } 1795 mlx4_en_clear_list(dev); 1796 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1797 list_del(&mclist->list); 1798 kfree(mclist); 1799 } 1800 1801 /* Flush multicast filter */ 1802 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); 1803 1804 /* Remove flow steering rules for the port*/ 1805 if (mdev->dev->caps.steering_mode == 1806 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1807 ASSERT_RTNL(); 1808 list_for_each_entry_safe(flow, tmp_flow, 1809 &priv->ethtool_list, list) { 1810 mlx4_flow_detach(mdev->dev, flow->id); 1811 list_del(&flow->list); 1812 } 1813 } 1814 1815 mlx4_en_destroy_drop_qp(priv); 1816 1817 /* Free TX Rings */ 1818 for (i = 0; i < priv->tx_ring_num; i++) { 1819 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]); 1820 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]); 1821 } 1822 msleep(10); 1823 1824 for (i = 0; i < priv->tx_ring_num; i++) 1825 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]); 1826 1827 /* Free RSS qps */ 1828 mlx4_en_release_rss_steer(priv); 1829 1830 /* Unregister Mac address for the port */ 1831 mlx4_en_put_qp(priv); 1832 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN)) 1833 mdev->mac_removed[priv->port] = 1; 1834 1835 /* Free RX Rings */ 1836 for (i = 0; i < priv->rx_ring_num; i++) { 1837 struct mlx4_en_cq *cq = priv->rx_cq[i]; 1838 1839 local_bh_disable(); 1840 while (!mlx4_en_cq_lock_napi(cq)) { 1841 pr_info("CQ %d locked\n", i); 1842 mdelay(1); 1843 } 1844 local_bh_enable(); 1845 1846 napi_synchronize(&cq->napi); 1847 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1848 mlx4_en_deactivate_cq(priv, cq); 1849 1850 mlx4_en_free_affinity_hint(priv, i); 1851 } 1852 } 1853 1854 static void mlx4_en_restart(struct work_struct *work) 1855 { 1856 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1857 watchdog_task); 1858 struct mlx4_en_dev *mdev = priv->mdev; 1859 struct net_device *dev = priv->dev; 1860 1861 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1862 1863 mutex_lock(&mdev->state_lock); 1864 if (priv->port_up) { 1865 mlx4_en_stop_port(dev, 1); 1866 if (mlx4_en_start_port(dev)) 1867 en_err(priv, "Failed restarting port %d\n", priv->port); 1868 } 1869 mutex_unlock(&mdev->state_lock); 1870 } 1871 1872 static void mlx4_en_clear_stats(struct net_device *dev) 1873 { 1874 struct mlx4_en_priv *priv = netdev_priv(dev); 1875 struct mlx4_en_dev *mdev = priv->mdev; 1876 int i; 1877 1878 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1879 en_dbg(HW, priv, "Failed dumping statistics\n"); 1880 1881 memset(&priv->stats, 0, sizeof(priv->stats)); 1882 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1883 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1884 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1885 1886 for (i = 0; i < priv->tx_ring_num; i++) { 1887 priv->tx_ring[i]->bytes = 0; 1888 priv->tx_ring[i]->packets = 0; 1889 priv->tx_ring[i]->tx_csum = 0; 1890 } 1891 for (i = 0; i < priv->rx_ring_num; i++) { 1892 priv->rx_ring[i]->bytes = 0; 1893 priv->rx_ring[i]->packets = 0; 1894 priv->rx_ring[i]->csum_ok = 0; 1895 priv->rx_ring[i]->csum_none = 0; 1896 priv->rx_ring[i]->csum_complete = 0; 1897 } 1898 } 1899 1900 static int mlx4_en_open(struct net_device *dev) 1901 { 1902 struct mlx4_en_priv *priv = netdev_priv(dev); 1903 struct mlx4_en_dev *mdev = priv->mdev; 1904 int err = 0; 1905 1906 mutex_lock(&mdev->state_lock); 1907 1908 if (!mdev->device_up) { 1909 en_err(priv, "Cannot open - device down/disabled\n"); 1910 err = -EBUSY; 1911 goto out; 1912 } 1913 1914 /* Reset HW statistics and SW counters */ 1915 mlx4_en_clear_stats(dev); 1916 1917 err = mlx4_en_start_port(dev); 1918 if (err) 1919 en_err(priv, "Failed starting port:%d\n", priv->port); 1920 1921 out: 1922 mutex_unlock(&mdev->state_lock); 1923 return err; 1924 } 1925 1926 1927 static int mlx4_en_close(struct net_device *dev) 1928 { 1929 struct mlx4_en_priv *priv = netdev_priv(dev); 1930 struct mlx4_en_dev *mdev = priv->mdev; 1931 1932 en_dbg(IFDOWN, priv, "Close port called\n"); 1933 1934 mutex_lock(&mdev->state_lock); 1935 1936 mlx4_en_stop_port(dev, 0); 1937 netif_carrier_off(dev); 1938 1939 mutex_unlock(&mdev->state_lock); 1940 return 0; 1941 } 1942 1943 void mlx4_en_free_resources(struct mlx4_en_priv *priv) 1944 { 1945 int i; 1946 1947 #ifdef CONFIG_RFS_ACCEL 1948 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap); 1949 priv->dev->rx_cpu_rmap = NULL; 1950 #endif 1951 1952 for (i = 0; i < priv->tx_ring_num; i++) { 1953 if (priv->tx_ring && priv->tx_ring[i]) 1954 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 1955 if (priv->tx_cq && priv->tx_cq[i]) 1956 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 1957 } 1958 1959 for (i = 0; i < priv->rx_ring_num; i++) { 1960 if (priv->rx_ring[i]) 1961 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 1962 priv->prof->rx_ring_size, priv->stride); 1963 if (priv->rx_cq[i]) 1964 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 1965 } 1966 1967 if (priv->base_tx_qpn) { 1968 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num); 1969 priv->base_tx_qpn = 0; 1970 } 1971 } 1972 1973 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 1974 { 1975 struct mlx4_en_port_profile *prof = priv->prof; 1976 int i; 1977 int node; 1978 1979 /* Create tx Rings */ 1980 for (i = 0; i < priv->tx_ring_num; i++) { 1981 node = cpu_to_node(i % num_online_cpus()); 1982 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 1983 prof->tx_ring_size, i, TX, node)) 1984 goto err; 1985 1986 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], 1987 prof->tx_ring_size, TXBB_SIZE, 1988 node, i)) 1989 goto err; 1990 } 1991 1992 /* Create rx Rings */ 1993 for (i = 0; i < priv->rx_ring_num; i++) { 1994 node = cpu_to_node(i % num_online_cpus()); 1995 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 1996 prof->rx_ring_size, i, RX, node)) 1997 goto err; 1998 1999 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 2000 prof->rx_ring_size, priv->stride, 2001 node)) 2002 goto err; 2003 } 2004 2005 #ifdef CONFIG_RFS_ACCEL 2006 if (priv->mdev->dev->caps.comp_pool) { 2007 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool); 2008 if (!priv->dev->rx_cpu_rmap) 2009 goto err; 2010 } 2011 #endif 2012 2013 return 0; 2014 2015 err: 2016 en_err(priv, "Failed to allocate NIC resources\n"); 2017 for (i = 0; i < priv->rx_ring_num; i++) { 2018 if (priv->rx_ring[i]) 2019 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2020 prof->rx_ring_size, 2021 priv->stride); 2022 if (priv->rx_cq[i]) 2023 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2024 } 2025 for (i = 0; i < priv->tx_ring_num; i++) { 2026 if (priv->tx_ring[i]) 2027 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2028 if (priv->tx_cq[i]) 2029 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2030 } 2031 return -ENOMEM; 2032 } 2033 2034 2035 void mlx4_en_destroy_netdev(struct net_device *dev) 2036 { 2037 struct mlx4_en_priv *priv = netdev_priv(dev); 2038 struct mlx4_en_dev *mdev = priv->mdev; 2039 2040 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2041 2042 /* Unregister device - this will close the port if it was up */ 2043 if (priv->registered) 2044 unregister_netdev(dev); 2045 2046 if (priv->allocated) 2047 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2048 2049 cancel_delayed_work(&priv->stats_task); 2050 cancel_delayed_work(&priv->service_task); 2051 /* flush any pending task for this netdev */ 2052 flush_workqueue(mdev->workqueue); 2053 2054 /* Detach the netdev so tasks would not attempt to access it */ 2055 mutex_lock(&mdev->state_lock); 2056 mdev->pndev[priv->port] = NULL; 2057 mutex_unlock(&mdev->state_lock); 2058 2059 mlx4_en_free_resources(priv); 2060 2061 kfree(priv->tx_ring); 2062 kfree(priv->tx_cq); 2063 2064 free_netdev(dev); 2065 } 2066 2067 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2068 { 2069 struct mlx4_en_priv *priv = netdev_priv(dev); 2070 struct mlx4_en_dev *mdev = priv->mdev; 2071 int err = 0; 2072 2073 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2074 dev->mtu, new_mtu); 2075 2076 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 2077 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 2078 return -EPERM; 2079 } 2080 dev->mtu = new_mtu; 2081 2082 if (netif_running(dev)) { 2083 mutex_lock(&mdev->state_lock); 2084 if (!mdev->device_up) { 2085 /* NIC is probably restarting - let watchdog task reset 2086 * the port */ 2087 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2088 } else { 2089 mlx4_en_stop_port(dev, 1); 2090 err = mlx4_en_start_port(dev); 2091 if (err) { 2092 en_err(priv, "Failed restarting port:%d\n", 2093 priv->port); 2094 queue_work(mdev->workqueue, &priv->watchdog_task); 2095 } 2096 } 2097 mutex_unlock(&mdev->state_lock); 2098 } 2099 return 0; 2100 } 2101 2102 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2103 { 2104 struct mlx4_en_priv *priv = netdev_priv(dev); 2105 struct mlx4_en_dev *mdev = priv->mdev; 2106 struct hwtstamp_config config; 2107 2108 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2109 return -EFAULT; 2110 2111 /* reserved for future extensions */ 2112 if (config.flags) 2113 return -EINVAL; 2114 2115 /* device doesn't support time stamping */ 2116 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2117 return -EINVAL; 2118 2119 /* TX HW timestamp */ 2120 switch (config.tx_type) { 2121 case HWTSTAMP_TX_OFF: 2122 case HWTSTAMP_TX_ON: 2123 break; 2124 default: 2125 return -ERANGE; 2126 } 2127 2128 /* RX HW timestamp */ 2129 switch (config.rx_filter) { 2130 case HWTSTAMP_FILTER_NONE: 2131 break; 2132 case HWTSTAMP_FILTER_ALL: 2133 case HWTSTAMP_FILTER_SOME: 2134 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2135 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2136 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2137 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2138 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2139 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2140 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2141 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2142 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2143 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2144 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2145 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2146 config.rx_filter = HWTSTAMP_FILTER_ALL; 2147 break; 2148 default: 2149 return -ERANGE; 2150 } 2151 2152 if (mlx4_en_reset_config(dev, config, dev->features)) { 2153 config.tx_type = HWTSTAMP_TX_OFF; 2154 config.rx_filter = HWTSTAMP_FILTER_NONE; 2155 } 2156 2157 return copy_to_user(ifr->ifr_data, &config, 2158 sizeof(config)) ? -EFAULT : 0; 2159 } 2160 2161 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2162 { 2163 struct mlx4_en_priv *priv = netdev_priv(dev); 2164 2165 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2166 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2167 } 2168 2169 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2170 { 2171 switch (cmd) { 2172 case SIOCSHWTSTAMP: 2173 return mlx4_en_hwtstamp_set(dev, ifr); 2174 case SIOCGHWTSTAMP: 2175 return mlx4_en_hwtstamp_get(dev, ifr); 2176 default: 2177 return -EOPNOTSUPP; 2178 } 2179 } 2180 2181 static int mlx4_en_set_features(struct net_device *netdev, 2182 netdev_features_t features) 2183 { 2184 struct mlx4_en_priv *priv = netdev_priv(netdev); 2185 int ret = 0; 2186 2187 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 2188 en_info(priv, "Turn %s RX vlan strip offload\n", 2189 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF"); 2190 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config, 2191 features); 2192 if (ret) 2193 return ret; 2194 } 2195 2196 if (features & NETIF_F_LOOPBACK) 2197 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK); 2198 else 2199 priv->ctrl_flags &= 2200 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK); 2201 2202 mlx4_en_update_loopback_state(netdev, features); 2203 2204 return 0; 2205 2206 } 2207 2208 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2209 { 2210 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2211 struct mlx4_en_dev *mdev = en_priv->mdev; 2212 u64 mac_u64 = mlx4_mac_to_u64(mac); 2213 2214 if (!is_valid_ether_addr(mac)) 2215 return -EINVAL; 2216 2217 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2218 } 2219 2220 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) 2221 { 2222 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2223 struct mlx4_en_dev *mdev = en_priv->mdev; 2224 2225 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos); 2226 } 2227 2228 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2229 { 2230 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2231 struct mlx4_en_dev *mdev = en_priv->mdev; 2232 2233 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2234 } 2235 2236 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2237 { 2238 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2239 struct mlx4_en_dev *mdev = en_priv->mdev; 2240 2241 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2242 } 2243 2244 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2245 { 2246 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2247 struct mlx4_en_dev *mdev = en_priv->mdev; 2248 2249 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2250 } 2251 2252 #define PORT_ID_BYTE_LEN 8 2253 static int mlx4_en_get_phys_port_id(struct net_device *dev, 2254 struct netdev_phys_item_id *ppid) 2255 { 2256 struct mlx4_en_priv *priv = netdev_priv(dev); 2257 struct mlx4_dev *mdev = priv->mdev->dev; 2258 int i; 2259 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2260 2261 if (!phys_port_id) 2262 return -EOPNOTSUPP; 2263 2264 ppid->id_len = sizeof(phys_port_id); 2265 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2266 ppid->id[i] = phys_port_id & 0xff; 2267 phys_port_id >>= 8; 2268 } 2269 return 0; 2270 } 2271 2272 #ifdef CONFIG_MLX4_EN_VXLAN 2273 static void mlx4_en_add_vxlan_offloads(struct work_struct *work) 2274 { 2275 int ret; 2276 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2277 vxlan_add_task); 2278 2279 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port); 2280 if (ret) 2281 goto out; 2282 2283 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2284 VXLAN_STEER_BY_OUTER_MAC, 1); 2285 out: 2286 if (ret) { 2287 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2288 return; 2289 } 2290 2291 /* set offloads */ 2292 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2293 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL; 2294 priv->dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; 2295 priv->dev->features |= NETIF_F_GSO_UDP_TUNNEL; 2296 } 2297 2298 static void mlx4_en_del_vxlan_offloads(struct work_struct *work) 2299 { 2300 int ret; 2301 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2302 vxlan_del_task); 2303 /* unset offloads */ 2304 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2305 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL); 2306 priv->dev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL; 2307 priv->dev->features &= ~NETIF_F_GSO_UDP_TUNNEL; 2308 2309 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2310 VXLAN_STEER_BY_OUTER_MAC, 0); 2311 if (ret) 2312 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2313 2314 priv->vxlan_port = 0; 2315 } 2316 2317 static void mlx4_en_add_vxlan_port(struct net_device *dev, 2318 sa_family_t sa_family, __be16 port) 2319 { 2320 struct mlx4_en_priv *priv = netdev_priv(dev); 2321 __be16 current_port; 2322 2323 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2324 return; 2325 2326 if (sa_family == AF_INET6) 2327 return; 2328 2329 current_port = priv->vxlan_port; 2330 if (current_port && current_port != port) { 2331 en_warn(priv, "vxlan port %d configured, can't add port %d\n", 2332 ntohs(current_port), ntohs(port)); 2333 return; 2334 } 2335 2336 priv->vxlan_port = port; 2337 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task); 2338 } 2339 2340 static void mlx4_en_del_vxlan_port(struct net_device *dev, 2341 sa_family_t sa_family, __be16 port) 2342 { 2343 struct mlx4_en_priv *priv = netdev_priv(dev); 2344 __be16 current_port; 2345 2346 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2347 return; 2348 2349 if (sa_family == AF_INET6) 2350 return; 2351 2352 current_port = priv->vxlan_port; 2353 if (current_port != port) { 2354 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port)); 2355 return; 2356 } 2357 2358 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task); 2359 } 2360 2361 static bool mlx4_en_gso_check(struct sk_buff *skb, struct net_device *dev) 2362 { 2363 return vxlan_gso_check(skb); 2364 } 2365 #endif 2366 2367 static const struct net_device_ops mlx4_netdev_ops = { 2368 .ndo_open = mlx4_en_open, 2369 .ndo_stop = mlx4_en_close, 2370 .ndo_start_xmit = mlx4_en_xmit, 2371 .ndo_select_queue = mlx4_en_select_queue, 2372 .ndo_get_stats = mlx4_en_get_stats, 2373 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2374 .ndo_set_mac_address = mlx4_en_set_mac, 2375 .ndo_validate_addr = eth_validate_addr, 2376 .ndo_change_mtu = mlx4_en_change_mtu, 2377 .ndo_do_ioctl = mlx4_en_ioctl, 2378 .ndo_tx_timeout = mlx4_en_tx_timeout, 2379 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2380 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2381 #ifdef CONFIG_NET_POLL_CONTROLLER 2382 .ndo_poll_controller = mlx4_en_netpoll, 2383 #endif 2384 .ndo_set_features = mlx4_en_set_features, 2385 .ndo_setup_tc = mlx4_en_setup_tc, 2386 #ifdef CONFIG_RFS_ACCEL 2387 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2388 #endif 2389 #ifdef CONFIG_NET_RX_BUSY_POLL 2390 .ndo_busy_poll = mlx4_en_low_latency_recv, 2391 #endif 2392 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2393 #ifdef CONFIG_MLX4_EN_VXLAN 2394 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2395 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2396 .ndo_gso_check = mlx4_en_gso_check, 2397 #endif 2398 }; 2399 2400 static const struct net_device_ops mlx4_netdev_ops_master = { 2401 .ndo_open = mlx4_en_open, 2402 .ndo_stop = mlx4_en_close, 2403 .ndo_start_xmit = mlx4_en_xmit, 2404 .ndo_select_queue = mlx4_en_select_queue, 2405 .ndo_get_stats = mlx4_en_get_stats, 2406 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2407 .ndo_set_mac_address = mlx4_en_set_mac, 2408 .ndo_validate_addr = eth_validate_addr, 2409 .ndo_change_mtu = mlx4_en_change_mtu, 2410 .ndo_tx_timeout = mlx4_en_tx_timeout, 2411 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2412 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2413 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2414 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2415 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2416 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2417 .ndo_get_vf_config = mlx4_en_get_vf_config, 2418 #ifdef CONFIG_NET_POLL_CONTROLLER 2419 .ndo_poll_controller = mlx4_en_netpoll, 2420 #endif 2421 .ndo_set_features = mlx4_en_set_features, 2422 .ndo_setup_tc = mlx4_en_setup_tc, 2423 #ifdef CONFIG_RFS_ACCEL 2424 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2425 #endif 2426 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2427 #ifdef CONFIG_MLX4_EN_VXLAN 2428 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2429 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2430 .ndo_gso_check = mlx4_en_gso_check, 2431 #endif 2432 }; 2433 2434 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 2435 struct mlx4_en_port_profile *prof) 2436 { 2437 struct net_device *dev; 2438 struct mlx4_en_priv *priv; 2439 int i; 2440 int err; 2441 u64 mac_u64; 2442 2443 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 2444 MAX_TX_RINGS, MAX_RX_RINGS); 2445 if (dev == NULL) 2446 return -ENOMEM; 2447 2448 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 2449 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 2450 2451 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev); 2452 dev->dev_port = port - 1; 2453 2454 /* 2455 * Initialize driver private data 2456 */ 2457 2458 priv = netdev_priv(dev); 2459 memset(priv, 0, sizeof(struct mlx4_en_priv)); 2460 spin_lock_init(&priv->stats_lock); 2461 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 2462 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 2463 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 2464 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 2465 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 2466 #ifdef CONFIG_MLX4_EN_VXLAN 2467 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads); 2468 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads); 2469 #endif 2470 #ifdef CONFIG_RFS_ACCEL 2471 INIT_LIST_HEAD(&priv->filters); 2472 spin_lock_init(&priv->filters_lock); 2473 #endif 2474 2475 priv->dev = dev; 2476 priv->mdev = mdev; 2477 priv->ddev = &mdev->pdev->dev; 2478 priv->prof = prof; 2479 priv->port = port; 2480 priv->port_up = false; 2481 priv->flags = prof->flags; 2482 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME; 2483 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 2484 MLX4_WQE_CTRL_SOLICITED); 2485 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 2486 priv->tx_ring_num = prof->tx_ring_num; 2487 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK; 2488 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key)); 2489 2490 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 2491 GFP_KERNEL); 2492 if (!priv->tx_ring) { 2493 err = -ENOMEM; 2494 goto out; 2495 } 2496 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 2497 GFP_KERNEL); 2498 if (!priv->tx_cq) { 2499 err = -ENOMEM; 2500 goto out; 2501 } 2502 priv->rx_ring_num = prof->rx_ring_num; 2503 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 2504 priv->cqe_size = mdev->dev->caps.cqe_size; 2505 priv->mac_index = -1; 2506 priv->msg_enable = MLX4_EN_MSG_LEVEL; 2507 #ifdef CONFIG_MLX4_EN_DCB 2508 if (!mlx4_is_slave(priv->mdev->dev)) { 2509 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) { 2510 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 2511 } else { 2512 en_info(priv, "enabling only PFC DCB ops\n"); 2513 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 2514 } 2515 } 2516 #endif 2517 2518 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 2519 INIT_HLIST_HEAD(&priv->mac_hash[i]); 2520 2521 /* Query for default mac and max mtu */ 2522 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 2523 2524 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] & 2525 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP) 2526 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP; 2527 2528 /* Set default MAC */ 2529 dev->addr_len = ETH_ALEN; 2530 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 2531 if (!is_valid_ether_addr(dev->dev_addr)) { 2532 if (mlx4_is_slave(priv->mdev->dev)) { 2533 eth_hw_addr_random(dev); 2534 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 2535 mac_u64 = mlx4_mac_to_u64(dev->dev_addr); 2536 mdev->dev->caps.def_mac[priv->port] = mac_u64; 2537 } else { 2538 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 2539 priv->port, dev->dev_addr); 2540 err = -EINVAL; 2541 goto out; 2542 } 2543 } 2544 2545 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac)); 2546 2547 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2548 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2549 err = mlx4_en_alloc_resources(priv); 2550 if (err) 2551 goto out; 2552 2553 /* Initialize time stamping config */ 2554 priv->hwtstamp_config.flags = 0; 2555 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 2556 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 2557 2558 /* Allocate page for receive rings */ 2559 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 2560 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE); 2561 if (err) { 2562 en_err(priv, "Failed to allocate page for rx qps\n"); 2563 goto out; 2564 } 2565 priv->allocated = 1; 2566 2567 /* 2568 * Initialize netdev entry points 2569 */ 2570 if (mlx4_is_master(priv->mdev->dev)) 2571 dev->netdev_ops = &mlx4_netdev_ops_master; 2572 else 2573 dev->netdev_ops = &mlx4_netdev_ops; 2574 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 2575 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 2576 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 2577 2578 dev->ethtool_ops = &mlx4_en_ethtool_ops; 2579 2580 /* 2581 * Set driver features 2582 */ 2583 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2584 if (mdev->LSO_support) 2585 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2586 2587 dev->vlan_features = dev->hw_features; 2588 2589 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 2590 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 2591 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 2592 NETIF_F_HW_VLAN_CTAG_FILTER; 2593 dev->hw_features |= NETIF_F_LOOPBACK | 2594 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 2595 2596 if (mdev->dev->caps.steering_mode == 2597 MLX4_STEERING_MODE_DEVICE_MANAGED && 2598 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC) 2599 dev->hw_features |= NETIF_F_NTUPLE; 2600 2601 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 2602 dev->priv_flags |= IFF_UNICAST_FLT; 2603 2604 /* Setting a default hash function value */ 2605 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) { 2606 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 2607 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) { 2608 priv->rss_hash_fn = ETH_RSS_HASH_XOR; 2609 } else { 2610 en_warn(priv, 2611 "No RSS hash capabilities exposed, using Toeplitz\n"); 2612 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 2613 } 2614 2615 mdev->pndev[port] = dev; 2616 2617 netif_carrier_off(dev); 2618 mlx4_en_set_default_moderation(priv); 2619 2620 err = register_netdev(dev); 2621 if (err) { 2622 en_err(priv, "Netdev registration failed for port %d\n", port); 2623 goto out; 2624 } 2625 priv->registered = 1; 2626 2627 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 2628 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 2629 2630 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 2631 2632 /* Configure port */ 2633 mlx4_en_calc_rx_buf(dev); 2634 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 2635 priv->rx_skb_size + ETH_FCS_LEN, 2636 prof->tx_pause, prof->tx_ppp, 2637 prof->rx_pause, prof->rx_ppp); 2638 if (err) { 2639 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 2640 priv->port, err); 2641 goto out; 2642 } 2643 2644 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 2645 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 2646 if (err) { 2647 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 2648 err); 2649 goto out; 2650 } 2651 } 2652 2653 /* Init port */ 2654 en_warn(priv, "Initializing port\n"); 2655 err = mlx4_INIT_PORT(mdev->dev, priv->port); 2656 if (err) { 2657 en_err(priv, "Failed Initializing port\n"); 2658 goto out; 2659 } 2660 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 2661 2662 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2663 queue_delayed_work(mdev->workqueue, &priv->service_task, 2664 SERVICE_TASK_DELAY); 2665 2666 return 0; 2667 2668 out: 2669 mlx4_en_destroy_netdev(dev); 2670 return err; 2671 } 2672 2673 int mlx4_en_reset_config(struct net_device *dev, 2674 struct hwtstamp_config ts_config, 2675 netdev_features_t features) 2676 { 2677 struct mlx4_en_priv *priv = netdev_priv(dev); 2678 struct mlx4_en_dev *mdev = priv->mdev; 2679 int port_up = 0; 2680 int err = 0; 2681 2682 if (priv->hwtstamp_config.tx_type == ts_config.tx_type && 2683 priv->hwtstamp_config.rx_filter == ts_config.rx_filter && 2684 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) 2685 return 0; /* Nothing to change */ 2686 2687 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 2688 (features & NETIF_F_HW_VLAN_CTAG_RX) && 2689 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) { 2690 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n"); 2691 return -EINVAL; 2692 } 2693 2694 mutex_lock(&mdev->state_lock); 2695 if (priv->port_up) { 2696 port_up = 1; 2697 mlx4_en_stop_port(dev, 1); 2698 } 2699 2700 mlx4_en_free_resources(priv); 2701 2702 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n", 2703 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX)); 2704 2705 priv->hwtstamp_config.tx_type = ts_config.tx_type; 2706 priv->hwtstamp_config.rx_filter = ts_config.rx_filter; 2707 2708 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 2709 if (features & NETIF_F_HW_VLAN_CTAG_RX) 2710 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 2711 else 2712 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 2713 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) { 2714 /* RX time-stamping is OFF, update the RX vlan offload 2715 * to the latest wanted state 2716 */ 2717 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX) 2718 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 2719 else 2720 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 2721 } 2722 2723 /* RX vlan offload and RX time-stamping can't co-exist ! 2724 * Regardless of the caller's choice, 2725 * Turn Off RX vlan offload in case of time-stamping is ON 2726 */ 2727 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) { 2728 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 2729 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n"); 2730 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 2731 } 2732 2733 err = mlx4_en_alloc_resources(priv); 2734 if (err) { 2735 en_err(priv, "Failed reallocating port resources\n"); 2736 goto out; 2737 } 2738 if (port_up) { 2739 err = mlx4_en_start_port(dev); 2740 if (err) 2741 en_err(priv, "Failed starting port\n"); 2742 } 2743 2744 out: 2745 mutex_unlock(&mdev->state_lock); 2746 netdev_features_change(dev); 2747 return err; 2748 } 2749