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 #include <net/devlink.h> 44 45 #include <linux/mlx4/driver.h> 46 #include <linux/mlx4/device.h> 47 #include <linux/mlx4/cmd.h> 48 #include <linux/mlx4/cq.h> 49 50 #include "mlx4_en.h" 51 #include "en_port.h" 52 53 int mlx4_en_setup_tc(struct net_device *dev, u8 up) 54 { 55 struct mlx4_en_priv *priv = netdev_priv(dev); 56 int i; 57 unsigned int offset = 0; 58 59 if (up && up != MLX4_EN_NUM_UP) 60 return -EINVAL; 61 62 netdev_set_num_tc(dev, up); 63 64 /* Partition Tx queues evenly amongst UP's */ 65 for (i = 0; i < up; i++) { 66 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset); 67 offset += priv->num_tx_rings_p_up; 68 } 69 70 return 0; 71 } 72 73 static int __mlx4_en_setup_tc(struct net_device *dev, u32 handle, __be16 proto, 74 struct tc_to_netdev *tc) 75 { 76 if (tc->type != TC_SETUP_MQPRIO) 77 return -EINVAL; 78 79 return mlx4_en_setup_tc(dev, tc->tc); 80 } 81 82 #ifdef CONFIG_RFS_ACCEL 83 84 struct mlx4_en_filter { 85 struct list_head next; 86 struct work_struct work; 87 88 u8 ip_proto; 89 __be32 src_ip; 90 __be32 dst_ip; 91 __be16 src_port; 92 __be16 dst_port; 93 94 int rxq_index; 95 struct mlx4_en_priv *priv; 96 u32 flow_id; /* RFS infrastructure id */ 97 int id; /* mlx4_en driver id */ 98 u64 reg_id; /* Flow steering API id */ 99 u8 activated; /* Used to prevent expiry before filter 100 * is attached 101 */ 102 struct hlist_node filter_chain; 103 }; 104 105 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv); 106 107 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto) 108 { 109 switch (ip_proto) { 110 case IPPROTO_UDP: 111 return MLX4_NET_TRANS_RULE_ID_UDP; 112 case IPPROTO_TCP: 113 return MLX4_NET_TRANS_RULE_ID_TCP; 114 default: 115 return MLX4_NET_TRANS_RULE_NUM; 116 } 117 }; 118 119 static void mlx4_en_filter_work(struct work_struct *work) 120 { 121 struct mlx4_en_filter *filter = container_of(work, 122 struct mlx4_en_filter, 123 work); 124 struct mlx4_en_priv *priv = filter->priv; 125 struct mlx4_spec_list spec_tcp_udp = { 126 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto), 127 { 128 .tcp_udp = { 129 .dst_port = filter->dst_port, 130 .dst_port_msk = (__force __be16)-1, 131 .src_port = filter->src_port, 132 .src_port_msk = (__force __be16)-1, 133 }, 134 }, 135 }; 136 struct mlx4_spec_list spec_ip = { 137 .id = MLX4_NET_TRANS_RULE_ID_IPV4, 138 { 139 .ipv4 = { 140 .dst_ip = filter->dst_ip, 141 .dst_ip_msk = (__force __be32)-1, 142 .src_ip = filter->src_ip, 143 .src_ip_msk = (__force __be32)-1, 144 }, 145 }, 146 }; 147 struct mlx4_spec_list spec_eth = { 148 .id = MLX4_NET_TRANS_RULE_ID_ETH, 149 }; 150 struct mlx4_net_trans_rule rule = { 151 .list = LIST_HEAD_INIT(rule.list), 152 .queue_mode = MLX4_NET_TRANS_Q_LIFO, 153 .exclusive = 1, 154 .allow_loopback = 1, 155 .promisc_mode = MLX4_FS_REGULAR, 156 .port = priv->port, 157 .priority = MLX4_DOMAIN_RFS, 158 }; 159 int rc; 160 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 161 162 if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) { 163 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n", 164 filter->ip_proto); 165 goto ignore; 166 } 167 list_add_tail(&spec_eth.list, &rule.list); 168 list_add_tail(&spec_ip.list, &rule.list); 169 list_add_tail(&spec_tcp_udp.list, &rule.list); 170 171 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn; 172 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN); 173 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 174 175 filter->activated = 0; 176 177 if (filter->reg_id) { 178 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 179 if (rc && rc != -ENOENT) 180 en_err(priv, "Error detaching flow. rc = %d\n", rc); 181 } 182 183 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id); 184 if (rc) 185 en_err(priv, "Error attaching flow. err = %d\n", rc); 186 187 ignore: 188 mlx4_en_filter_rfs_expire(priv); 189 190 filter->activated = 1; 191 } 192 193 static inline struct hlist_head * 194 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 195 __be16 src_port, __be16 dst_port) 196 { 197 unsigned long l; 198 int bucket_idx; 199 200 l = (__force unsigned long)src_port | 201 ((__force unsigned long)dst_port << 2); 202 l ^= (__force unsigned long)(src_ip ^ dst_ip); 203 204 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT); 205 206 return &priv->filter_hash[bucket_idx]; 207 } 208 209 static struct mlx4_en_filter * 210 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip, 211 __be32 dst_ip, u8 ip_proto, __be16 src_port, 212 __be16 dst_port, u32 flow_id) 213 { 214 struct mlx4_en_filter *filter = NULL; 215 216 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC); 217 if (!filter) 218 return NULL; 219 220 filter->priv = priv; 221 filter->rxq_index = rxq_index; 222 INIT_WORK(&filter->work, mlx4_en_filter_work); 223 224 filter->src_ip = src_ip; 225 filter->dst_ip = dst_ip; 226 filter->ip_proto = ip_proto; 227 filter->src_port = src_port; 228 filter->dst_port = dst_port; 229 230 filter->flow_id = flow_id; 231 232 filter->id = priv->last_filter_id++ % RPS_NO_FILTER; 233 234 list_add_tail(&filter->next, &priv->filters); 235 hlist_add_head(&filter->filter_chain, 236 filter_hash_bucket(priv, src_ip, dst_ip, src_port, 237 dst_port)); 238 239 return filter; 240 } 241 242 static void mlx4_en_filter_free(struct mlx4_en_filter *filter) 243 { 244 struct mlx4_en_priv *priv = filter->priv; 245 int rc; 246 247 list_del(&filter->next); 248 249 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 250 if (rc && rc != -ENOENT) 251 en_err(priv, "Error detaching flow. rc = %d\n", rc); 252 253 kfree(filter); 254 } 255 256 static inline struct mlx4_en_filter * 257 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 258 u8 ip_proto, __be16 src_port, __be16 dst_port) 259 { 260 struct mlx4_en_filter *filter; 261 struct mlx4_en_filter *ret = NULL; 262 263 hlist_for_each_entry(filter, 264 filter_hash_bucket(priv, src_ip, dst_ip, 265 src_port, dst_port), 266 filter_chain) { 267 if (filter->src_ip == src_ip && 268 filter->dst_ip == dst_ip && 269 filter->ip_proto == ip_proto && 270 filter->src_port == src_port && 271 filter->dst_port == dst_port) { 272 ret = filter; 273 break; 274 } 275 } 276 277 return ret; 278 } 279 280 static int 281 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 282 u16 rxq_index, u32 flow_id) 283 { 284 struct mlx4_en_priv *priv = netdev_priv(net_dev); 285 struct mlx4_en_filter *filter; 286 const struct iphdr *ip; 287 const __be16 *ports; 288 u8 ip_proto; 289 __be32 src_ip; 290 __be32 dst_ip; 291 __be16 src_port; 292 __be16 dst_port; 293 int nhoff = skb_network_offset(skb); 294 int ret = 0; 295 296 if (skb->protocol != htons(ETH_P_IP)) 297 return -EPROTONOSUPPORT; 298 299 ip = (const struct iphdr *)(skb->data + nhoff); 300 if (ip_is_fragment(ip)) 301 return -EPROTONOSUPPORT; 302 303 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP)) 304 return -EPROTONOSUPPORT; 305 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); 306 307 ip_proto = ip->protocol; 308 src_ip = ip->saddr; 309 dst_ip = ip->daddr; 310 src_port = ports[0]; 311 dst_port = ports[1]; 312 313 spin_lock_bh(&priv->filters_lock); 314 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto, 315 src_port, dst_port); 316 if (filter) { 317 if (filter->rxq_index == rxq_index) 318 goto out; 319 320 filter->rxq_index = rxq_index; 321 } else { 322 filter = mlx4_en_filter_alloc(priv, rxq_index, 323 src_ip, dst_ip, ip_proto, 324 src_port, dst_port, flow_id); 325 if (!filter) { 326 ret = -ENOMEM; 327 goto err; 328 } 329 } 330 331 queue_work(priv->mdev->workqueue, &filter->work); 332 333 out: 334 ret = filter->id; 335 err: 336 spin_unlock_bh(&priv->filters_lock); 337 338 return ret; 339 } 340 341 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv) 342 { 343 struct mlx4_en_filter *filter, *tmp; 344 LIST_HEAD(del_list); 345 346 spin_lock_bh(&priv->filters_lock); 347 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 348 list_move(&filter->next, &del_list); 349 hlist_del(&filter->filter_chain); 350 } 351 spin_unlock_bh(&priv->filters_lock); 352 353 list_for_each_entry_safe(filter, tmp, &del_list, next) { 354 cancel_work_sync(&filter->work); 355 mlx4_en_filter_free(filter); 356 } 357 } 358 359 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv) 360 { 361 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL; 362 LIST_HEAD(del_list); 363 int i = 0; 364 365 spin_lock_bh(&priv->filters_lock); 366 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 367 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA) 368 break; 369 370 if (filter->activated && 371 !work_pending(&filter->work) && 372 rps_may_expire_flow(priv->dev, 373 filter->rxq_index, filter->flow_id, 374 filter->id)) { 375 list_move(&filter->next, &del_list); 376 hlist_del(&filter->filter_chain); 377 } else 378 last_filter = filter; 379 380 i++; 381 } 382 383 if (last_filter && (&last_filter->next != priv->filters.next)) 384 list_move(&priv->filters, &last_filter->next); 385 386 spin_unlock_bh(&priv->filters_lock); 387 388 list_for_each_entry_safe(filter, tmp, &del_list, next) 389 mlx4_en_filter_free(filter); 390 } 391 #endif 392 393 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev, 394 __be16 proto, u16 vid) 395 { 396 struct mlx4_en_priv *priv = netdev_priv(dev); 397 struct mlx4_en_dev *mdev = priv->mdev; 398 int err; 399 int idx; 400 401 en_dbg(HW, priv, "adding VLAN:%d\n", vid); 402 403 set_bit(vid, priv->active_vlans); 404 405 /* Add VID to port VLAN filter */ 406 mutex_lock(&mdev->state_lock); 407 if (mdev->device_up && priv->port_up) { 408 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 409 if (err) 410 en_err(priv, "Failed configuring VLAN filter\n"); 411 } 412 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx)) 413 en_dbg(HW, priv, "failed adding vlan %d\n", vid); 414 mutex_unlock(&mdev->state_lock); 415 416 return 0; 417 } 418 419 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, 420 __be16 proto, u16 vid) 421 { 422 struct mlx4_en_priv *priv = netdev_priv(dev); 423 struct mlx4_en_dev *mdev = priv->mdev; 424 int err; 425 426 en_dbg(HW, priv, "Killing VID:%d\n", vid); 427 428 clear_bit(vid, priv->active_vlans); 429 430 /* Remove VID from port VLAN filter */ 431 mutex_lock(&mdev->state_lock); 432 mlx4_unregister_vlan(mdev->dev, priv->port, vid); 433 434 if (mdev->device_up && priv->port_up) { 435 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 436 if (err) 437 en_err(priv, "Failed configuring VLAN filter\n"); 438 } 439 mutex_unlock(&mdev->state_lock); 440 441 return 0; 442 } 443 444 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) 445 { 446 int i; 447 for (i = ETH_ALEN - 1; i >= 0; --i) { 448 dst_mac[i] = src_mac & 0xff; 449 src_mac >>= 8; 450 } 451 memset(&dst_mac[ETH_ALEN], 0, 2); 452 } 453 454 455 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr, 456 int qpn, u64 *reg_id) 457 { 458 int err; 459 460 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 461 priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 462 return 0; /* do nothing */ 463 464 err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn, 465 MLX4_DOMAIN_NIC, reg_id); 466 if (err) { 467 en_err(priv, "failed to add vxlan steering rule, err %d\n", err); 468 return err; 469 } 470 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id); 471 return 0; 472 } 473 474 475 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv, 476 unsigned char *mac, int *qpn, u64 *reg_id) 477 { 478 struct mlx4_en_dev *mdev = priv->mdev; 479 struct mlx4_dev *dev = mdev->dev; 480 int err; 481 482 switch (dev->caps.steering_mode) { 483 case MLX4_STEERING_MODE_B0: { 484 struct mlx4_qp qp; 485 u8 gid[16] = {0}; 486 487 qp.qpn = *qpn; 488 memcpy(&gid[10], mac, ETH_ALEN); 489 gid[5] = priv->port; 490 491 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH); 492 break; 493 } 494 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 495 struct mlx4_spec_list spec_eth = { {NULL} }; 496 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 497 498 struct mlx4_net_trans_rule rule = { 499 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 500 .exclusive = 0, 501 .allow_loopback = 1, 502 .promisc_mode = MLX4_FS_REGULAR, 503 .priority = MLX4_DOMAIN_NIC, 504 }; 505 506 rule.port = priv->port; 507 rule.qpn = *qpn; 508 INIT_LIST_HEAD(&rule.list); 509 510 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH; 511 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN); 512 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 513 list_add_tail(&spec_eth.list, &rule.list); 514 515 err = mlx4_flow_attach(dev, &rule, reg_id); 516 break; 517 } 518 default: 519 return -EINVAL; 520 } 521 if (err) 522 en_warn(priv, "Failed Attaching Unicast\n"); 523 524 return err; 525 } 526 527 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv, 528 unsigned char *mac, int qpn, u64 reg_id) 529 { 530 struct mlx4_en_dev *mdev = priv->mdev; 531 struct mlx4_dev *dev = mdev->dev; 532 533 switch (dev->caps.steering_mode) { 534 case MLX4_STEERING_MODE_B0: { 535 struct mlx4_qp qp; 536 u8 gid[16] = {0}; 537 538 qp.qpn = qpn; 539 memcpy(&gid[10], mac, ETH_ALEN); 540 gid[5] = priv->port; 541 542 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH); 543 break; 544 } 545 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 546 mlx4_flow_detach(dev, reg_id); 547 break; 548 } 549 default: 550 en_err(priv, "Invalid steering mode.\n"); 551 } 552 } 553 554 static int mlx4_en_get_qp(struct mlx4_en_priv *priv) 555 { 556 struct mlx4_en_dev *mdev = priv->mdev; 557 struct mlx4_dev *dev = mdev->dev; 558 int index = 0; 559 int err = 0; 560 int *qpn = &priv->base_qpn; 561 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 562 563 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n", 564 priv->dev->dev_addr); 565 index = mlx4_register_mac(dev, priv->port, mac); 566 if (index < 0) { 567 err = index; 568 en_err(priv, "Failed adding MAC: %pM\n", 569 priv->dev->dev_addr); 570 return err; 571 } 572 573 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 574 int base_qpn = mlx4_get_base_qpn(dev, priv->port); 575 *qpn = base_qpn + index; 576 return 0; 577 } 578 579 err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP); 580 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); 581 if (err) { 582 en_err(priv, "Failed to reserve qp for mac registration\n"); 583 mlx4_unregister_mac(dev, priv->port, mac); 584 return err; 585 } 586 587 return 0; 588 } 589 590 static void mlx4_en_put_qp(struct mlx4_en_priv *priv) 591 { 592 struct mlx4_en_dev *mdev = priv->mdev; 593 struct mlx4_dev *dev = mdev->dev; 594 int qpn = priv->base_qpn; 595 596 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 597 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 598 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 599 priv->dev->dev_addr); 600 mlx4_unregister_mac(dev, priv->port, mac); 601 } else { 602 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", 603 priv->port, qpn); 604 mlx4_qp_release_range(dev, qpn, 1); 605 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 606 } 607 } 608 609 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, 610 unsigned char *new_mac, unsigned char *prev_mac) 611 { 612 struct mlx4_en_dev *mdev = priv->mdev; 613 struct mlx4_dev *dev = mdev->dev; 614 int err = 0; 615 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac); 616 617 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { 618 struct hlist_head *bucket; 619 unsigned int mac_hash; 620 struct mlx4_mac_entry *entry; 621 struct hlist_node *tmp; 622 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac); 623 624 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; 625 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 626 if (ether_addr_equal_64bits(entry->mac, prev_mac)) { 627 mlx4_en_uc_steer_release(priv, entry->mac, 628 qpn, entry->reg_id); 629 mlx4_unregister_mac(dev, priv->port, 630 prev_mac_u64); 631 hlist_del_rcu(&entry->hlist); 632 synchronize_rcu(); 633 memcpy(entry->mac, new_mac, ETH_ALEN); 634 entry->reg_id = 0; 635 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; 636 hlist_add_head_rcu(&entry->hlist, 637 &priv->mac_hash[mac_hash]); 638 mlx4_register_mac(dev, priv->port, new_mac_u64); 639 err = mlx4_en_uc_steer_add(priv, new_mac, 640 &qpn, 641 &entry->reg_id); 642 if (err) 643 return err; 644 if (priv->tunnel_reg_id) { 645 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 646 priv->tunnel_reg_id = 0; 647 } 648 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn, 649 &priv->tunnel_reg_id); 650 return err; 651 } 652 } 653 return -EINVAL; 654 } 655 656 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); 657 } 658 659 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv, 660 unsigned char new_mac[ETH_ALEN + 2]) 661 { 662 int err = 0; 663 664 if (priv->port_up) { 665 /* Remove old MAC and insert the new one */ 666 err = mlx4_en_replace_mac(priv, priv->base_qpn, 667 new_mac, priv->current_mac); 668 if (err) 669 en_err(priv, "Failed changing HW MAC address\n"); 670 } else 671 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); 672 673 if (!err) 674 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac)); 675 676 return err; 677 } 678 679 static int mlx4_en_set_mac(struct net_device *dev, void *addr) 680 { 681 struct mlx4_en_priv *priv = netdev_priv(dev); 682 struct mlx4_en_dev *mdev = priv->mdev; 683 struct sockaddr *saddr = addr; 684 unsigned char new_mac[ETH_ALEN + 2]; 685 int err; 686 687 if (!is_valid_ether_addr(saddr->sa_data)) 688 return -EADDRNOTAVAIL; 689 690 mutex_lock(&mdev->state_lock); 691 memcpy(new_mac, saddr->sa_data, ETH_ALEN); 692 err = mlx4_en_do_set_mac(priv, new_mac); 693 if (!err) 694 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); 695 mutex_unlock(&mdev->state_lock); 696 697 return err; 698 } 699 700 static void mlx4_en_clear_list(struct net_device *dev) 701 { 702 struct mlx4_en_priv *priv = netdev_priv(dev); 703 struct mlx4_en_mc_list *tmp, *mc_to_del; 704 705 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { 706 list_del(&mc_to_del->list); 707 kfree(mc_to_del); 708 } 709 } 710 711 static void mlx4_en_cache_mclist(struct net_device *dev) 712 { 713 struct mlx4_en_priv *priv = netdev_priv(dev); 714 struct netdev_hw_addr *ha; 715 struct mlx4_en_mc_list *tmp; 716 717 mlx4_en_clear_list(dev); 718 netdev_for_each_mc_addr(ha, dev) { 719 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); 720 if (!tmp) { 721 mlx4_en_clear_list(dev); 722 return; 723 } 724 memcpy(tmp->addr, ha->addr, ETH_ALEN); 725 list_add_tail(&tmp->list, &priv->mc_list); 726 } 727 } 728 729 static void update_mclist_flags(struct mlx4_en_priv *priv, 730 struct list_head *dst, 731 struct list_head *src) 732 { 733 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; 734 bool found; 735 736 /* Find all the entries that should be removed from dst, 737 * These are the entries that are not found in src 738 */ 739 list_for_each_entry(dst_tmp, dst, list) { 740 found = false; 741 list_for_each_entry(src_tmp, src, list) { 742 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 743 found = true; 744 break; 745 } 746 } 747 if (!found) 748 dst_tmp->action = MCLIST_REM; 749 } 750 751 /* Add entries that exist in src but not in dst 752 * mark them as need to add 753 */ 754 list_for_each_entry(src_tmp, src, list) { 755 found = false; 756 list_for_each_entry(dst_tmp, dst, list) { 757 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 758 dst_tmp->action = MCLIST_NONE; 759 found = true; 760 break; 761 } 762 } 763 if (!found) { 764 new_mc = kmemdup(src_tmp, 765 sizeof(struct mlx4_en_mc_list), 766 GFP_KERNEL); 767 if (!new_mc) 768 return; 769 770 new_mc->action = MCLIST_ADD; 771 list_add_tail(&new_mc->list, dst); 772 } 773 } 774 } 775 776 static void mlx4_en_set_rx_mode(struct net_device *dev) 777 { 778 struct mlx4_en_priv *priv = netdev_priv(dev); 779 780 if (!priv->port_up) 781 return; 782 783 queue_work(priv->mdev->workqueue, &priv->rx_mode_task); 784 } 785 786 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, 787 struct mlx4_en_dev *mdev) 788 { 789 int err = 0; 790 791 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { 792 if (netif_msg_rx_status(priv)) 793 en_warn(priv, "Entering promiscuous mode\n"); 794 priv->flags |= MLX4_EN_FLAG_PROMISC; 795 796 /* Enable promiscouos mode */ 797 switch (mdev->dev->caps.steering_mode) { 798 case MLX4_STEERING_MODE_DEVICE_MANAGED: 799 err = mlx4_flow_steer_promisc_add(mdev->dev, 800 priv->port, 801 priv->base_qpn, 802 MLX4_FS_ALL_DEFAULT); 803 if (err) 804 en_err(priv, "Failed enabling promiscuous mode\n"); 805 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 806 break; 807 808 case MLX4_STEERING_MODE_B0: 809 err = mlx4_unicast_promisc_add(mdev->dev, 810 priv->base_qpn, 811 priv->port); 812 if (err) 813 en_err(priv, "Failed enabling unicast promiscuous mode\n"); 814 815 /* Add the default qp number as multicast 816 * promisc 817 */ 818 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 819 err = mlx4_multicast_promisc_add(mdev->dev, 820 priv->base_qpn, 821 priv->port); 822 if (err) 823 en_err(priv, "Failed enabling multicast promiscuous mode\n"); 824 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 825 } 826 break; 827 828 case MLX4_STEERING_MODE_A0: 829 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 830 priv->port, 831 priv->base_qpn, 832 1); 833 if (err) 834 en_err(priv, "Failed enabling promiscuous mode\n"); 835 break; 836 } 837 838 /* Disable port multicast filter (unconditionally) */ 839 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 840 0, MLX4_MCAST_DISABLE); 841 if (err) 842 en_err(priv, "Failed disabling multicast filter\n"); 843 } 844 } 845 846 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv, 847 struct mlx4_en_dev *mdev) 848 { 849 int err = 0; 850 851 if (netif_msg_rx_status(priv)) 852 en_warn(priv, "Leaving promiscuous mode\n"); 853 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 854 855 /* Disable promiscouos mode */ 856 switch (mdev->dev->caps.steering_mode) { 857 case MLX4_STEERING_MODE_DEVICE_MANAGED: 858 err = mlx4_flow_steer_promisc_remove(mdev->dev, 859 priv->port, 860 MLX4_FS_ALL_DEFAULT); 861 if (err) 862 en_err(priv, "Failed disabling promiscuous mode\n"); 863 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 864 break; 865 866 case MLX4_STEERING_MODE_B0: 867 err = mlx4_unicast_promisc_remove(mdev->dev, 868 priv->base_qpn, 869 priv->port); 870 if (err) 871 en_err(priv, "Failed disabling unicast promiscuous mode\n"); 872 /* Disable Multicast promisc */ 873 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 874 err = mlx4_multicast_promisc_remove(mdev->dev, 875 priv->base_qpn, 876 priv->port); 877 if (err) 878 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 879 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 880 } 881 break; 882 883 case MLX4_STEERING_MODE_A0: 884 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 885 priv->port, 886 priv->base_qpn, 0); 887 if (err) 888 en_err(priv, "Failed disabling promiscuous mode\n"); 889 break; 890 } 891 } 892 893 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, 894 struct net_device *dev, 895 struct mlx4_en_dev *mdev) 896 { 897 struct mlx4_en_mc_list *mclist, *tmp; 898 u64 mcast_addr = 0; 899 u8 mc_list[16] = {0}; 900 int err = 0; 901 902 /* Enable/disable the multicast filter according to IFF_ALLMULTI */ 903 if (dev->flags & IFF_ALLMULTI) { 904 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 905 0, MLX4_MCAST_DISABLE); 906 if (err) 907 en_err(priv, "Failed disabling multicast filter\n"); 908 909 /* Add the default qp number as multicast promisc */ 910 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 911 switch (mdev->dev->caps.steering_mode) { 912 case MLX4_STEERING_MODE_DEVICE_MANAGED: 913 err = mlx4_flow_steer_promisc_add(mdev->dev, 914 priv->port, 915 priv->base_qpn, 916 MLX4_FS_MC_DEFAULT); 917 break; 918 919 case MLX4_STEERING_MODE_B0: 920 err = mlx4_multicast_promisc_add(mdev->dev, 921 priv->base_qpn, 922 priv->port); 923 break; 924 925 case MLX4_STEERING_MODE_A0: 926 break; 927 } 928 if (err) 929 en_err(priv, "Failed entering multicast promisc mode\n"); 930 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 931 } 932 } else { 933 /* Disable Multicast promisc */ 934 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 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_MC_DEFAULT); 940 break; 941 942 case MLX4_STEERING_MODE_B0: 943 err = mlx4_multicast_promisc_remove(mdev->dev, 944 priv->base_qpn, 945 priv->port); 946 break; 947 948 case MLX4_STEERING_MODE_A0: 949 break; 950 } 951 if (err) 952 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 953 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 954 } 955 956 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 957 0, MLX4_MCAST_DISABLE); 958 if (err) 959 en_err(priv, "Failed disabling multicast filter\n"); 960 961 /* Flush mcast filter and init it with broadcast address */ 962 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, 963 1, MLX4_MCAST_CONFIG); 964 965 /* Update multicast list - we cache all addresses so they won't 966 * change while HW is updated holding the command semaphor */ 967 netif_addr_lock_bh(dev); 968 mlx4_en_cache_mclist(dev); 969 netif_addr_unlock_bh(dev); 970 list_for_each_entry(mclist, &priv->mc_list, list) { 971 mcast_addr = mlx4_mac_to_u64(mclist->addr); 972 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 973 mcast_addr, 0, MLX4_MCAST_CONFIG); 974 } 975 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 976 0, MLX4_MCAST_ENABLE); 977 if (err) 978 en_err(priv, "Failed enabling multicast filter\n"); 979 980 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); 981 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 982 if (mclist->action == MCLIST_REM) { 983 /* detach this address and delete from list */ 984 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 985 mc_list[5] = priv->port; 986 err = mlx4_multicast_detach(mdev->dev, 987 &priv->rss_map.indir_qp, 988 mc_list, 989 MLX4_PROT_ETH, 990 mclist->reg_id); 991 if (err) 992 en_err(priv, "Fail to detach multicast address\n"); 993 994 if (mclist->tunnel_reg_id) { 995 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id); 996 if (err) 997 en_err(priv, "Failed to detach multicast address\n"); 998 } 999 1000 /* remove from list */ 1001 list_del(&mclist->list); 1002 kfree(mclist); 1003 } else if (mclist->action == MCLIST_ADD) { 1004 /* attach the address */ 1005 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1006 /* needed for B0 steering support */ 1007 mc_list[5] = priv->port; 1008 err = mlx4_multicast_attach(mdev->dev, 1009 &priv->rss_map.indir_qp, 1010 mc_list, 1011 priv->port, 0, 1012 MLX4_PROT_ETH, 1013 &mclist->reg_id); 1014 if (err) 1015 en_err(priv, "Fail to attach multicast address\n"); 1016 1017 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn, 1018 &mclist->tunnel_reg_id); 1019 if (err) 1020 en_err(priv, "Failed to attach multicast address\n"); 1021 } 1022 } 1023 } 1024 } 1025 1026 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, 1027 struct net_device *dev, 1028 struct mlx4_en_dev *mdev) 1029 { 1030 struct netdev_hw_addr *ha; 1031 struct mlx4_mac_entry *entry; 1032 struct hlist_node *tmp; 1033 bool found; 1034 u64 mac; 1035 int err = 0; 1036 struct hlist_head *bucket; 1037 unsigned int i; 1038 int removed = 0; 1039 u32 prev_flags; 1040 1041 /* Note that we do not need to protect our mac_hash traversal with rcu, 1042 * since all modification code is protected by mdev->state_lock 1043 */ 1044 1045 /* find what to remove */ 1046 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1047 bucket = &priv->mac_hash[i]; 1048 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1049 found = false; 1050 netdev_for_each_uc_addr(ha, dev) { 1051 if (ether_addr_equal_64bits(entry->mac, 1052 ha->addr)) { 1053 found = true; 1054 break; 1055 } 1056 } 1057 1058 /* MAC address of the port is not in uc list */ 1059 if (ether_addr_equal_64bits(entry->mac, 1060 priv->current_mac)) 1061 found = true; 1062 1063 if (!found) { 1064 mac = mlx4_mac_to_u64(entry->mac); 1065 mlx4_en_uc_steer_release(priv, entry->mac, 1066 priv->base_qpn, 1067 entry->reg_id); 1068 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1069 1070 hlist_del_rcu(&entry->hlist); 1071 kfree_rcu(entry, rcu); 1072 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", 1073 entry->mac, priv->port); 1074 ++removed; 1075 } 1076 } 1077 } 1078 1079 /* if we didn't remove anything, there is no use in trying to add 1080 * again once we are in a forced promisc mode state 1081 */ 1082 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) 1083 return; 1084 1085 prev_flags = priv->flags; 1086 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 1087 1088 /* find what to add */ 1089 netdev_for_each_uc_addr(ha, dev) { 1090 found = false; 1091 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; 1092 hlist_for_each_entry(entry, bucket, hlist) { 1093 if (ether_addr_equal_64bits(entry->mac, ha->addr)) { 1094 found = true; 1095 break; 1096 } 1097 } 1098 1099 if (!found) { 1100 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1101 if (!entry) { 1102 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", 1103 ha->addr, priv->port); 1104 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1105 break; 1106 } 1107 mac = mlx4_mac_to_u64(ha->addr); 1108 memcpy(entry->mac, ha->addr, ETH_ALEN); 1109 err = mlx4_register_mac(mdev->dev, priv->port, mac); 1110 if (err < 0) { 1111 en_err(priv, "Failed registering MAC %pM on port %d: %d\n", 1112 ha->addr, priv->port, err); 1113 kfree(entry); 1114 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1115 break; 1116 } 1117 err = mlx4_en_uc_steer_add(priv, ha->addr, 1118 &priv->base_qpn, 1119 &entry->reg_id); 1120 if (err) { 1121 en_err(priv, "Failed adding MAC %pM on port %d: %d\n", 1122 ha->addr, priv->port, err); 1123 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1124 kfree(entry); 1125 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1126 break; 1127 } else { 1128 unsigned int mac_hash; 1129 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", 1130 ha->addr, priv->port); 1131 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; 1132 bucket = &priv->mac_hash[mac_hash]; 1133 hlist_add_head_rcu(&entry->hlist, bucket); 1134 } 1135 } 1136 } 1137 1138 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1139 en_warn(priv, "Forcing promiscuous mode on port:%d\n", 1140 priv->port); 1141 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1142 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", 1143 priv->port); 1144 } 1145 } 1146 1147 static void mlx4_en_do_set_rx_mode(struct work_struct *work) 1148 { 1149 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1150 rx_mode_task); 1151 struct mlx4_en_dev *mdev = priv->mdev; 1152 struct net_device *dev = priv->dev; 1153 1154 mutex_lock(&mdev->state_lock); 1155 if (!mdev->device_up) { 1156 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); 1157 goto out; 1158 } 1159 if (!priv->port_up) { 1160 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); 1161 goto out; 1162 } 1163 1164 if (!netif_carrier_ok(dev)) { 1165 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { 1166 if (priv->port_state.link_state) { 1167 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; 1168 netif_carrier_on(dev); 1169 en_dbg(LINK, priv, "Link Up\n"); 1170 } 1171 } 1172 } 1173 1174 if (dev->priv_flags & IFF_UNICAST_FLT) 1175 mlx4_en_do_uc_filter(priv, dev, mdev); 1176 1177 /* Promsicuous mode: disable all filters */ 1178 if ((dev->flags & IFF_PROMISC) || 1179 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { 1180 mlx4_en_set_promisc_mode(priv, mdev); 1181 goto out; 1182 } 1183 1184 /* Not in promiscuous mode */ 1185 if (priv->flags & MLX4_EN_FLAG_PROMISC) 1186 mlx4_en_clear_promisc_mode(priv, mdev); 1187 1188 mlx4_en_do_multicast(priv, dev, mdev); 1189 out: 1190 mutex_unlock(&mdev->state_lock); 1191 } 1192 1193 #ifdef CONFIG_NET_POLL_CONTROLLER 1194 static void mlx4_en_netpoll(struct net_device *dev) 1195 { 1196 struct mlx4_en_priv *priv = netdev_priv(dev); 1197 struct mlx4_en_cq *cq; 1198 int i; 1199 1200 for (i = 0; i < priv->rx_ring_num; i++) { 1201 cq = priv->rx_cq[i]; 1202 napi_schedule(&cq->napi); 1203 } 1204 } 1205 #endif 1206 1207 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv) 1208 { 1209 u64 reg_id; 1210 int err = 0; 1211 int *qpn = &priv->base_qpn; 1212 struct mlx4_mac_entry *entry; 1213 1214 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); 1215 if (err) 1216 return err; 1217 1218 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn, 1219 &priv->tunnel_reg_id); 1220 if (err) 1221 goto tunnel_err; 1222 1223 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1224 if (!entry) { 1225 err = -ENOMEM; 1226 goto alloc_err; 1227 } 1228 1229 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac)); 1230 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac)); 1231 entry->reg_id = reg_id; 1232 hlist_add_head_rcu(&entry->hlist, 1233 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); 1234 1235 return 0; 1236 1237 alloc_err: 1238 if (priv->tunnel_reg_id) 1239 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 1240 1241 tunnel_err: 1242 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 1243 return err; 1244 } 1245 1246 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv) 1247 { 1248 u64 mac; 1249 unsigned int i; 1250 int qpn = priv->base_qpn; 1251 struct hlist_head *bucket; 1252 struct hlist_node *tmp; 1253 struct mlx4_mac_entry *entry; 1254 1255 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1256 bucket = &priv->mac_hash[i]; 1257 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1258 mac = mlx4_mac_to_u64(entry->mac); 1259 en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n", 1260 entry->mac); 1261 mlx4_en_uc_steer_release(priv, entry->mac, 1262 qpn, entry->reg_id); 1263 1264 mlx4_unregister_mac(priv->mdev->dev, priv->port, mac); 1265 hlist_del_rcu(&entry->hlist); 1266 kfree_rcu(entry, rcu); 1267 } 1268 } 1269 1270 if (priv->tunnel_reg_id) { 1271 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 1272 priv->tunnel_reg_id = 0; 1273 } 1274 } 1275 1276 static void mlx4_en_tx_timeout(struct net_device *dev) 1277 { 1278 struct mlx4_en_priv *priv = netdev_priv(dev); 1279 struct mlx4_en_dev *mdev = priv->mdev; 1280 int i; 1281 1282 if (netif_msg_timer(priv)) 1283 en_warn(priv, "Tx timeout called on port:%d\n", priv->port); 1284 1285 for (i = 0; i < priv->tx_ring_num; i++) { 1286 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) 1287 continue; 1288 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", 1289 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn, 1290 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod); 1291 } 1292 1293 priv->port_stats.tx_timeout++; 1294 en_dbg(DRV, priv, "Scheduling watchdog\n"); 1295 queue_work(mdev->workqueue, &priv->watchdog_task); 1296 } 1297 1298 1299 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev) 1300 { 1301 struct mlx4_en_priv *priv = netdev_priv(dev); 1302 1303 spin_lock_bh(&priv->stats_lock); 1304 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats)); 1305 spin_unlock_bh(&priv->stats_lock); 1306 1307 return &priv->ret_stats; 1308 } 1309 1310 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1311 { 1312 struct mlx4_en_cq *cq; 1313 int i; 1314 1315 /* If we haven't received a specific coalescing setting 1316 * (module param), we set the moderation parameters as follows: 1317 * - moder_cnt is set to the number of mtu sized packets to 1318 * satisfy our coalescing target. 1319 * - moder_time is set to a fixed value. 1320 */ 1321 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1322 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1323 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1324 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1325 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1326 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1327 1328 /* Setup cq moderation params */ 1329 for (i = 0; i < priv->rx_ring_num; i++) { 1330 cq = priv->rx_cq[i]; 1331 cq->moder_cnt = priv->rx_frames; 1332 cq->moder_time = priv->rx_usecs; 1333 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1334 priv->last_moder_packets[i] = 0; 1335 priv->last_moder_bytes[i] = 0; 1336 } 1337 1338 for (i = 0; i < priv->tx_ring_num; i++) { 1339 cq = priv->tx_cq[i]; 1340 cq->moder_cnt = priv->tx_frames; 1341 cq->moder_time = priv->tx_usecs; 1342 } 1343 1344 /* Reset auto-moderation params */ 1345 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1346 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1347 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1348 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1349 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1350 priv->adaptive_rx_coal = 1; 1351 priv->last_moder_jiffies = 0; 1352 priv->last_moder_tx_packets = 0; 1353 } 1354 1355 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1356 { 1357 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1358 struct mlx4_en_cq *cq; 1359 unsigned long packets; 1360 unsigned long rate; 1361 unsigned long avg_pkt_size; 1362 unsigned long rx_packets; 1363 unsigned long rx_bytes; 1364 unsigned long rx_pkt_diff; 1365 int moder_time; 1366 int ring, err; 1367 1368 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1369 return; 1370 1371 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1372 spin_lock_bh(&priv->stats_lock); 1373 rx_packets = priv->rx_ring[ring]->packets; 1374 rx_bytes = priv->rx_ring[ring]->bytes; 1375 spin_unlock_bh(&priv->stats_lock); 1376 1377 rx_pkt_diff = ((unsigned long) (rx_packets - 1378 priv->last_moder_packets[ring])); 1379 packets = rx_pkt_diff; 1380 rate = packets * HZ / period; 1381 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1382 priv->last_moder_bytes[ring])) / packets : 0; 1383 1384 /* Apply auto-moderation only when packet rate 1385 * exceeds a rate that it matters */ 1386 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1387 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1388 if (rate < priv->pkt_rate_low) 1389 moder_time = priv->rx_usecs_low; 1390 else if (rate > priv->pkt_rate_high) 1391 moder_time = priv->rx_usecs_high; 1392 else 1393 moder_time = (rate - priv->pkt_rate_low) * 1394 (priv->rx_usecs_high - priv->rx_usecs_low) / 1395 (priv->pkt_rate_high - priv->pkt_rate_low) + 1396 priv->rx_usecs_low; 1397 } else { 1398 moder_time = priv->rx_usecs_low; 1399 } 1400 1401 if (moder_time != priv->last_moder_time[ring]) { 1402 priv->last_moder_time[ring] = moder_time; 1403 cq = priv->rx_cq[ring]; 1404 cq->moder_time = moder_time; 1405 cq->moder_cnt = priv->rx_frames; 1406 err = mlx4_en_set_cq_moder(priv, cq); 1407 if (err) 1408 en_err(priv, "Failed modifying moderation for cq:%d\n", 1409 ring); 1410 } 1411 priv->last_moder_packets[ring] = rx_packets; 1412 priv->last_moder_bytes[ring] = rx_bytes; 1413 } 1414 1415 priv->last_moder_jiffies = jiffies; 1416 } 1417 1418 static void mlx4_en_do_get_stats(struct work_struct *work) 1419 { 1420 struct delayed_work *delay = to_delayed_work(work); 1421 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1422 stats_task); 1423 struct mlx4_en_dev *mdev = priv->mdev; 1424 int err; 1425 1426 mutex_lock(&mdev->state_lock); 1427 if (mdev->device_up) { 1428 if (priv->port_up) { 1429 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1430 if (err) 1431 en_dbg(HW, priv, "Could not update stats\n"); 1432 1433 mlx4_en_auto_moderation(priv); 1434 } 1435 1436 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1437 } 1438 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1439 mlx4_en_do_set_mac(priv, priv->current_mac); 1440 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1441 } 1442 mutex_unlock(&mdev->state_lock); 1443 } 1444 1445 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1446 * periodically 1447 */ 1448 static void mlx4_en_service_task(struct work_struct *work) 1449 { 1450 struct delayed_work *delay = to_delayed_work(work); 1451 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1452 service_task); 1453 struct mlx4_en_dev *mdev = priv->mdev; 1454 1455 mutex_lock(&mdev->state_lock); 1456 if (mdev->device_up) { 1457 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1458 mlx4_en_ptp_overflow_check(mdev); 1459 1460 mlx4_en_recover_from_oom(priv); 1461 queue_delayed_work(mdev->workqueue, &priv->service_task, 1462 SERVICE_TASK_DELAY); 1463 } 1464 mutex_unlock(&mdev->state_lock); 1465 } 1466 1467 static void mlx4_en_linkstate(struct work_struct *work) 1468 { 1469 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1470 linkstate_task); 1471 struct mlx4_en_dev *mdev = priv->mdev; 1472 int linkstate = priv->link_state; 1473 1474 mutex_lock(&mdev->state_lock); 1475 /* If observable port state changed set carrier state and 1476 * report to system log */ 1477 if (priv->last_link_state != linkstate) { 1478 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1479 en_info(priv, "Link Down\n"); 1480 netif_carrier_off(priv->dev); 1481 } else { 1482 en_info(priv, "Link Up\n"); 1483 netif_carrier_on(priv->dev); 1484 } 1485 } 1486 priv->last_link_state = linkstate; 1487 mutex_unlock(&mdev->state_lock); 1488 } 1489 1490 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1491 { 1492 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx]; 1493 int numa_node = priv->mdev->dev->numa_node; 1494 1495 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL)) 1496 return -ENOMEM; 1497 1498 cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node), 1499 ring->affinity_mask); 1500 return 0; 1501 } 1502 1503 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1504 { 1505 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask); 1506 } 1507 1508 int mlx4_en_start_port(struct net_device *dev) 1509 { 1510 struct mlx4_en_priv *priv = netdev_priv(dev); 1511 struct mlx4_en_dev *mdev = priv->mdev; 1512 struct mlx4_en_cq *cq; 1513 struct mlx4_en_tx_ring *tx_ring; 1514 int rx_index = 0; 1515 int tx_index = 0; 1516 int err = 0; 1517 int i; 1518 int j; 1519 u8 mc_list[16] = {0}; 1520 1521 if (priv->port_up) { 1522 en_dbg(DRV, priv, "start port called while port already up\n"); 1523 return 0; 1524 } 1525 1526 INIT_LIST_HEAD(&priv->mc_list); 1527 INIT_LIST_HEAD(&priv->curr_list); 1528 INIT_LIST_HEAD(&priv->ethtool_list); 1529 memset(&priv->ethtool_rules[0], 0, 1530 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1531 1532 /* Calculate Rx buf size */ 1533 dev->mtu = min(dev->mtu, priv->max_mtu); 1534 mlx4_en_calc_rx_buf(dev); 1535 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1536 1537 /* Configure rx cq's and rings */ 1538 err = mlx4_en_activate_rx_rings(priv); 1539 if (err) { 1540 en_err(priv, "Failed to activate RX rings\n"); 1541 return err; 1542 } 1543 for (i = 0; i < priv->rx_ring_num; i++) { 1544 cq = priv->rx_cq[i]; 1545 1546 err = mlx4_en_init_affinity_hint(priv, i); 1547 if (err) { 1548 en_err(priv, "Failed preparing IRQ affinity hint\n"); 1549 goto cq_err; 1550 } 1551 1552 err = mlx4_en_activate_cq(priv, cq, i); 1553 if (err) { 1554 en_err(priv, "Failed activating Rx CQ\n"); 1555 mlx4_en_free_affinity_hint(priv, i); 1556 goto cq_err; 1557 } 1558 1559 for (j = 0; j < cq->size; j++) { 1560 struct mlx4_cqe *cqe = NULL; 1561 1562 cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) + 1563 priv->cqe_factor; 1564 cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1565 } 1566 1567 err = mlx4_en_set_cq_moder(priv, cq); 1568 if (err) { 1569 en_err(priv, "Failed setting cq moderation parameters\n"); 1570 mlx4_en_deactivate_cq(priv, cq); 1571 mlx4_en_free_affinity_hint(priv, i); 1572 goto cq_err; 1573 } 1574 mlx4_en_arm_cq(priv, cq); 1575 priv->rx_ring[i]->cqn = cq->mcq.cqn; 1576 ++rx_index; 1577 } 1578 1579 /* Set qp number */ 1580 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1581 err = mlx4_en_get_qp(priv); 1582 if (err) { 1583 en_err(priv, "Failed getting eth qp\n"); 1584 goto cq_err; 1585 } 1586 mdev->mac_removed[priv->port] = 0; 1587 1588 priv->counter_index = 1589 mlx4_get_default_counter_index(mdev->dev, priv->port); 1590 1591 err = mlx4_en_config_rss_steer(priv); 1592 if (err) { 1593 en_err(priv, "Failed configuring rss steering\n"); 1594 goto mac_err; 1595 } 1596 1597 err = mlx4_en_create_drop_qp(priv); 1598 if (err) 1599 goto rss_err; 1600 1601 /* Configure tx cq's and rings */ 1602 for (i = 0; i < priv->tx_ring_num; i++) { 1603 /* Configure cq */ 1604 cq = priv->tx_cq[i]; 1605 err = mlx4_en_activate_cq(priv, cq, i); 1606 if (err) { 1607 en_err(priv, "Failed allocating Tx CQ\n"); 1608 goto tx_err; 1609 } 1610 err = mlx4_en_set_cq_moder(priv, cq); 1611 if (err) { 1612 en_err(priv, "Failed setting cq moderation parameters\n"); 1613 mlx4_en_deactivate_cq(priv, cq); 1614 goto tx_err; 1615 } 1616 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i); 1617 cq->buf->wqe_index = cpu_to_be16(0xffff); 1618 1619 /* Configure ring */ 1620 tx_ring = priv->tx_ring[i]; 1621 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, 1622 i / priv->num_tx_rings_p_up); 1623 if (err) { 1624 en_err(priv, "Failed allocating Tx ring\n"); 1625 mlx4_en_deactivate_cq(priv, cq); 1626 goto tx_err; 1627 } 1628 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1629 1630 /* Arm CQ for TX completions */ 1631 mlx4_en_arm_cq(priv, cq); 1632 1633 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1634 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1635 *((u32 *) (tx_ring->buf + j)) = 0xffffffff; 1636 ++tx_index; 1637 } 1638 1639 /* Configure port */ 1640 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1641 priv->rx_skb_size + ETH_FCS_LEN, 1642 priv->prof->tx_pause, 1643 priv->prof->tx_ppp, 1644 priv->prof->rx_pause, 1645 priv->prof->rx_ppp); 1646 if (err) { 1647 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1648 priv->port, err); 1649 goto tx_err; 1650 } 1651 /* Set default qp number */ 1652 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1653 if (err) { 1654 en_err(priv, "Failed setting default qp numbers\n"); 1655 goto tx_err; 1656 } 1657 1658 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 1659 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 1660 if (err) { 1661 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 1662 err); 1663 goto tx_err; 1664 } 1665 } 1666 1667 /* Init port */ 1668 en_dbg(HW, priv, "Initializing port\n"); 1669 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1670 if (err) { 1671 en_err(priv, "Failed Initializing port\n"); 1672 goto tx_err; 1673 } 1674 1675 /* Set Unicast and VXLAN steering rules */ 1676 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 && 1677 mlx4_en_set_rss_steer_rules(priv)) 1678 mlx4_warn(mdev, "Failed setting steering rules\n"); 1679 1680 /* Attach rx QP to bradcast address */ 1681 eth_broadcast_addr(&mc_list[10]); 1682 mc_list[5] = priv->port; /* needed for B0 steering support */ 1683 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1684 priv->port, 0, MLX4_PROT_ETH, 1685 &priv->broadcast_id)) 1686 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1687 1688 /* Must redo promiscuous mode setup. */ 1689 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1690 1691 /* Schedule multicast task to populate multicast list */ 1692 queue_work(mdev->workqueue, &priv->rx_mode_task); 1693 1694 #ifdef CONFIG_MLX4_EN_VXLAN 1695 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 1696 vxlan_get_rx_port(dev); 1697 #endif 1698 priv->port_up = true; 1699 netif_tx_start_all_queues(dev); 1700 netif_device_attach(dev); 1701 1702 return 0; 1703 1704 tx_err: 1705 while (tx_index--) { 1706 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]); 1707 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]); 1708 } 1709 mlx4_en_destroy_drop_qp(priv); 1710 rss_err: 1711 mlx4_en_release_rss_steer(priv); 1712 mac_err: 1713 mlx4_en_put_qp(priv); 1714 cq_err: 1715 while (rx_index--) { 1716 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); 1717 mlx4_en_free_affinity_hint(priv, rx_index); 1718 } 1719 for (i = 0; i < priv->rx_ring_num; i++) 1720 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1721 1722 return err; /* need to close devices */ 1723 } 1724 1725 1726 void mlx4_en_stop_port(struct net_device *dev, int detach) 1727 { 1728 struct mlx4_en_priv *priv = netdev_priv(dev); 1729 struct mlx4_en_dev *mdev = priv->mdev; 1730 struct mlx4_en_mc_list *mclist, *tmp; 1731 struct ethtool_flow_id *flow, *tmp_flow; 1732 int i; 1733 u8 mc_list[16] = {0}; 1734 1735 if (!priv->port_up) { 1736 en_dbg(DRV, priv, "stop port called while port already down\n"); 1737 return; 1738 } 1739 1740 /* close port*/ 1741 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1742 1743 /* Synchronize with tx routine */ 1744 netif_tx_lock_bh(dev); 1745 if (detach) 1746 netif_device_detach(dev); 1747 netif_tx_stop_all_queues(dev); 1748 netif_tx_unlock_bh(dev); 1749 1750 netif_tx_disable(dev); 1751 1752 /* Set port as not active */ 1753 priv->port_up = false; 1754 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 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 eth_broadcast_addr(&mc_list[10]); 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 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 1828 mlx4_en_delete_rss_steer_rules(priv); 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 napi_synchronize(&cq->napi); 1843 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1844 mlx4_en_deactivate_cq(priv, cq); 1845 1846 mlx4_en_free_affinity_hint(priv, i); 1847 } 1848 } 1849 1850 static void mlx4_en_restart(struct work_struct *work) 1851 { 1852 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1853 watchdog_task); 1854 struct mlx4_en_dev *mdev = priv->mdev; 1855 struct net_device *dev = priv->dev; 1856 1857 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1858 1859 mutex_lock(&mdev->state_lock); 1860 if (priv->port_up) { 1861 mlx4_en_stop_port(dev, 1); 1862 if (mlx4_en_start_port(dev)) 1863 en_err(priv, "Failed restarting port %d\n", priv->port); 1864 } 1865 mutex_unlock(&mdev->state_lock); 1866 } 1867 1868 static void mlx4_en_clear_stats(struct net_device *dev) 1869 { 1870 struct mlx4_en_priv *priv = netdev_priv(dev); 1871 struct mlx4_en_dev *mdev = priv->mdev; 1872 int i; 1873 1874 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1875 en_dbg(HW, priv, "Failed dumping statistics\n"); 1876 1877 memset(&priv->stats, 0, sizeof(priv->stats)); 1878 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1879 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1880 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1881 memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats)); 1882 memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats)); 1883 memset(&priv->rx_priority_flowstats, 0, 1884 sizeof(priv->rx_priority_flowstats)); 1885 memset(&priv->tx_priority_flowstats, 0, 1886 sizeof(priv->tx_priority_flowstats)); 1887 memset(&priv->pf_stats, 0, sizeof(priv->pf_stats)); 1888 1889 for (i = 0; i < priv->tx_ring_num; i++) { 1890 priv->tx_ring[i]->bytes = 0; 1891 priv->tx_ring[i]->packets = 0; 1892 priv->tx_ring[i]->tx_csum = 0; 1893 } 1894 for (i = 0; i < priv->rx_ring_num; i++) { 1895 priv->rx_ring[i]->bytes = 0; 1896 priv->rx_ring[i]->packets = 0; 1897 priv->rx_ring[i]->csum_ok = 0; 1898 priv->rx_ring[i]->csum_none = 0; 1899 priv->rx_ring[i]->csum_complete = 0; 1900 } 1901 } 1902 1903 static int mlx4_en_open(struct net_device *dev) 1904 { 1905 struct mlx4_en_priv *priv = netdev_priv(dev); 1906 struct mlx4_en_dev *mdev = priv->mdev; 1907 int err = 0; 1908 1909 mutex_lock(&mdev->state_lock); 1910 1911 if (!mdev->device_up) { 1912 en_err(priv, "Cannot open - device down/disabled\n"); 1913 err = -EBUSY; 1914 goto out; 1915 } 1916 1917 /* Reset HW statistics and SW counters */ 1918 mlx4_en_clear_stats(dev); 1919 1920 err = mlx4_en_start_port(dev); 1921 if (err) 1922 en_err(priv, "Failed starting port:%d\n", priv->port); 1923 1924 out: 1925 mutex_unlock(&mdev->state_lock); 1926 return err; 1927 } 1928 1929 1930 static int mlx4_en_close(struct net_device *dev) 1931 { 1932 struct mlx4_en_priv *priv = netdev_priv(dev); 1933 struct mlx4_en_dev *mdev = priv->mdev; 1934 1935 en_dbg(IFDOWN, priv, "Close port called\n"); 1936 1937 mutex_lock(&mdev->state_lock); 1938 1939 mlx4_en_stop_port(dev, 0); 1940 netif_carrier_off(dev); 1941 1942 mutex_unlock(&mdev->state_lock); 1943 return 0; 1944 } 1945 1946 void mlx4_en_free_resources(struct mlx4_en_priv *priv) 1947 { 1948 int i; 1949 1950 #ifdef CONFIG_RFS_ACCEL 1951 priv->dev->rx_cpu_rmap = NULL; 1952 #endif 1953 1954 for (i = 0; i < priv->tx_ring_num; i++) { 1955 if (priv->tx_ring && priv->tx_ring[i]) 1956 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 1957 if (priv->tx_cq && priv->tx_cq[i]) 1958 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 1959 } 1960 1961 for (i = 0; i < priv->rx_ring_num; i++) { 1962 if (priv->rx_ring[i]) 1963 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 1964 priv->prof->rx_ring_size, priv->stride); 1965 if (priv->rx_cq[i]) 1966 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 1967 } 1968 1969 } 1970 1971 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 1972 { 1973 struct mlx4_en_port_profile *prof = priv->prof; 1974 int i; 1975 int node; 1976 1977 /* Create tx Rings */ 1978 for (i = 0; i < priv->tx_ring_num; i++) { 1979 node = cpu_to_node(i % num_online_cpus()); 1980 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 1981 prof->tx_ring_size, i, TX, node)) 1982 goto err; 1983 1984 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], 1985 prof->tx_ring_size, TXBB_SIZE, 1986 node, i)) 1987 goto err; 1988 } 1989 1990 /* Create rx Rings */ 1991 for (i = 0; i < priv->rx_ring_num; i++) { 1992 node = cpu_to_node(i % num_online_cpus()); 1993 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 1994 prof->rx_ring_size, i, RX, node)) 1995 goto err; 1996 1997 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 1998 prof->rx_ring_size, priv->stride, 1999 node)) 2000 goto err; 2001 } 2002 2003 #ifdef CONFIG_RFS_ACCEL 2004 priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port); 2005 #endif 2006 2007 return 0; 2008 2009 err: 2010 en_err(priv, "Failed to allocate NIC resources\n"); 2011 for (i = 0; i < priv->rx_ring_num; i++) { 2012 if (priv->rx_ring[i]) 2013 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2014 prof->rx_ring_size, 2015 priv->stride); 2016 if (priv->rx_cq[i]) 2017 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2018 } 2019 for (i = 0; i < priv->tx_ring_num; i++) { 2020 if (priv->tx_ring[i]) 2021 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2022 if (priv->tx_cq[i]) 2023 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2024 } 2025 return -ENOMEM; 2026 } 2027 2028 2029 void mlx4_en_destroy_netdev(struct net_device *dev) 2030 { 2031 struct mlx4_en_priv *priv = netdev_priv(dev); 2032 struct mlx4_en_dev *mdev = priv->mdev; 2033 2034 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2035 2036 /* Unregister device - this will close the port if it was up */ 2037 if (priv->registered) { 2038 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev, 2039 priv->port)); 2040 unregister_netdev(dev); 2041 } 2042 2043 if (priv->allocated) 2044 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2045 2046 cancel_delayed_work(&priv->stats_task); 2047 cancel_delayed_work(&priv->service_task); 2048 /* flush any pending task for this netdev */ 2049 flush_workqueue(mdev->workqueue); 2050 2051 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2052 mlx4_en_remove_timestamp(mdev); 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 mdev->upper[priv->port] = NULL; 2058 mutex_unlock(&mdev->state_lock); 2059 2060 mlx4_en_free_resources(priv); 2061 2062 kfree(priv->tx_ring); 2063 kfree(priv->tx_cq); 2064 2065 free_netdev(dev); 2066 } 2067 2068 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2069 { 2070 struct mlx4_en_priv *priv = netdev_priv(dev); 2071 struct mlx4_en_dev *mdev = priv->mdev; 2072 int err = 0; 2073 2074 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2075 dev->mtu, new_mtu); 2076 2077 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 2078 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 2079 return -EPERM; 2080 } 2081 dev->mtu = new_mtu; 2082 2083 if (netif_running(dev)) { 2084 mutex_lock(&mdev->state_lock); 2085 if (!mdev->device_up) { 2086 /* NIC is probably restarting - let watchdog task reset 2087 * the port */ 2088 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2089 } else { 2090 mlx4_en_stop_port(dev, 1); 2091 err = mlx4_en_start_port(dev); 2092 if (err) { 2093 en_err(priv, "Failed restarting port:%d\n", 2094 priv->port); 2095 queue_work(mdev->workqueue, &priv->watchdog_task); 2096 } 2097 } 2098 mutex_unlock(&mdev->state_lock); 2099 } 2100 return 0; 2101 } 2102 2103 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2104 { 2105 struct mlx4_en_priv *priv = netdev_priv(dev); 2106 struct mlx4_en_dev *mdev = priv->mdev; 2107 struct hwtstamp_config config; 2108 2109 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2110 return -EFAULT; 2111 2112 /* reserved for future extensions */ 2113 if (config.flags) 2114 return -EINVAL; 2115 2116 /* device doesn't support time stamping */ 2117 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2118 return -EINVAL; 2119 2120 /* TX HW timestamp */ 2121 switch (config.tx_type) { 2122 case HWTSTAMP_TX_OFF: 2123 case HWTSTAMP_TX_ON: 2124 break; 2125 default: 2126 return -ERANGE; 2127 } 2128 2129 /* RX HW timestamp */ 2130 switch (config.rx_filter) { 2131 case HWTSTAMP_FILTER_NONE: 2132 break; 2133 case HWTSTAMP_FILTER_ALL: 2134 case HWTSTAMP_FILTER_SOME: 2135 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2136 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2137 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2138 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2139 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2140 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2141 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2142 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2143 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2144 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2145 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2146 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2147 config.rx_filter = HWTSTAMP_FILTER_ALL; 2148 break; 2149 default: 2150 return -ERANGE; 2151 } 2152 2153 if (mlx4_en_reset_config(dev, config, dev->features)) { 2154 config.tx_type = HWTSTAMP_TX_OFF; 2155 config.rx_filter = HWTSTAMP_FILTER_NONE; 2156 } 2157 2158 return copy_to_user(ifr->ifr_data, &config, 2159 sizeof(config)) ? -EFAULT : 0; 2160 } 2161 2162 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2163 { 2164 struct mlx4_en_priv *priv = netdev_priv(dev); 2165 2166 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2167 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2168 } 2169 2170 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2171 { 2172 switch (cmd) { 2173 case SIOCSHWTSTAMP: 2174 return mlx4_en_hwtstamp_set(dev, ifr); 2175 case SIOCGHWTSTAMP: 2176 return mlx4_en_hwtstamp_get(dev, ifr); 2177 default: 2178 return -EOPNOTSUPP; 2179 } 2180 } 2181 2182 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev, 2183 netdev_features_t features) 2184 { 2185 struct mlx4_en_priv *en_priv = netdev_priv(netdev); 2186 struct mlx4_en_dev *mdev = en_priv->mdev; 2187 2188 /* Since there is no support for separate RX C-TAG/S-TAG vlan accel 2189 * enable/disable make sure S-TAG flag is always in same state as 2190 * C-TAG. 2191 */ 2192 if (features & NETIF_F_HW_VLAN_CTAG_RX && 2193 !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 2194 features |= NETIF_F_HW_VLAN_STAG_RX; 2195 else 2196 features &= ~NETIF_F_HW_VLAN_STAG_RX; 2197 2198 return features; 2199 } 2200 2201 static int mlx4_en_set_features(struct net_device *netdev, 2202 netdev_features_t features) 2203 { 2204 struct mlx4_en_priv *priv = netdev_priv(netdev); 2205 bool reset = false; 2206 int ret = 0; 2207 2208 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) { 2209 en_info(priv, "Turn %s RX-FCS\n", 2210 (features & NETIF_F_RXFCS) ? "ON" : "OFF"); 2211 reset = true; 2212 } 2213 2214 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) { 2215 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0; 2216 2217 en_info(priv, "Turn %s RX-ALL\n", 2218 ignore_fcs_value ? "ON" : "OFF"); 2219 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev, 2220 priv->port, ignore_fcs_value); 2221 if (ret) 2222 return ret; 2223 } 2224 2225 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 2226 en_info(priv, "Turn %s RX vlan strip offload\n", 2227 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF"); 2228 reset = true; 2229 } 2230 2231 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX)) 2232 en_info(priv, "Turn %s TX vlan strip offload\n", 2233 (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF"); 2234 2235 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX)) 2236 en_info(priv, "Turn %s TX S-VLAN strip offload\n", 2237 (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF"); 2238 2239 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) { 2240 en_info(priv, "Turn %s loopback\n", 2241 (features & NETIF_F_LOOPBACK) ? "ON" : "OFF"); 2242 mlx4_en_update_loopback_state(netdev, features); 2243 } 2244 2245 if (reset) { 2246 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config, 2247 features); 2248 if (ret) 2249 return ret; 2250 } 2251 2252 return 0; 2253 } 2254 2255 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2256 { 2257 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2258 struct mlx4_en_dev *mdev = en_priv->mdev; 2259 u64 mac_u64 = mlx4_mac_to_u64(mac); 2260 2261 if (is_multicast_ether_addr(mac)) 2262 return -EINVAL; 2263 2264 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2265 } 2266 2267 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) 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_vlan(mdev->dev, en_priv->port, vf, vlan, qos); 2273 } 2274 2275 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, 2276 int max_tx_rate) 2277 { 2278 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2279 struct mlx4_en_dev *mdev = en_priv->mdev; 2280 2281 return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate, 2282 max_tx_rate); 2283 } 2284 2285 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2286 { 2287 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2288 struct mlx4_en_dev *mdev = en_priv->mdev; 2289 2290 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2291 } 2292 2293 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2294 { 2295 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2296 struct mlx4_en_dev *mdev = en_priv->mdev; 2297 2298 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2299 } 2300 2301 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2302 { 2303 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2304 struct mlx4_en_dev *mdev = en_priv->mdev; 2305 2306 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2307 } 2308 2309 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf, 2310 struct ifla_vf_stats *vf_stats) 2311 { 2312 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2313 struct mlx4_en_dev *mdev = en_priv->mdev; 2314 2315 return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats); 2316 } 2317 2318 #define PORT_ID_BYTE_LEN 8 2319 static int mlx4_en_get_phys_port_id(struct net_device *dev, 2320 struct netdev_phys_item_id *ppid) 2321 { 2322 struct mlx4_en_priv *priv = netdev_priv(dev); 2323 struct mlx4_dev *mdev = priv->mdev->dev; 2324 int i; 2325 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2326 2327 if (!phys_port_id) 2328 return -EOPNOTSUPP; 2329 2330 ppid->id_len = sizeof(phys_port_id); 2331 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2332 ppid->id[i] = phys_port_id & 0xff; 2333 phys_port_id >>= 8; 2334 } 2335 return 0; 2336 } 2337 2338 #ifdef CONFIG_MLX4_EN_VXLAN 2339 static void mlx4_en_add_vxlan_offloads(struct work_struct *work) 2340 { 2341 int ret; 2342 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2343 vxlan_add_task); 2344 2345 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port); 2346 if (ret) 2347 goto out; 2348 2349 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2350 VXLAN_STEER_BY_OUTER_MAC, 1); 2351 out: 2352 if (ret) { 2353 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2354 return; 2355 } 2356 2357 /* set offloads */ 2358 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2359 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL; 2360 } 2361 2362 static void mlx4_en_del_vxlan_offloads(struct work_struct *work) 2363 { 2364 int ret; 2365 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2366 vxlan_del_task); 2367 /* unset offloads */ 2368 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2369 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL); 2370 2371 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2372 VXLAN_STEER_BY_OUTER_MAC, 0); 2373 if (ret) 2374 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2375 2376 priv->vxlan_port = 0; 2377 } 2378 2379 static void mlx4_en_add_vxlan_port(struct net_device *dev, 2380 sa_family_t sa_family, __be16 port) 2381 { 2382 struct mlx4_en_priv *priv = netdev_priv(dev); 2383 __be16 current_port; 2384 2385 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2386 return; 2387 2388 if (sa_family == AF_INET6) 2389 return; 2390 2391 current_port = priv->vxlan_port; 2392 if (current_port && current_port != port) { 2393 en_warn(priv, "vxlan port %d configured, can't add port %d\n", 2394 ntohs(current_port), ntohs(port)); 2395 return; 2396 } 2397 2398 priv->vxlan_port = port; 2399 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task); 2400 } 2401 2402 static void mlx4_en_del_vxlan_port(struct net_device *dev, 2403 sa_family_t sa_family, __be16 port) 2404 { 2405 struct mlx4_en_priv *priv = netdev_priv(dev); 2406 __be16 current_port; 2407 2408 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2409 return; 2410 2411 if (sa_family == AF_INET6) 2412 return; 2413 2414 current_port = priv->vxlan_port; 2415 if (current_port != port) { 2416 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port)); 2417 return; 2418 } 2419 2420 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task); 2421 } 2422 2423 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb, 2424 struct net_device *dev, 2425 netdev_features_t features) 2426 { 2427 features = vlan_features_check(skb, features); 2428 return vxlan_features_check(skb, features); 2429 } 2430 #endif 2431 2432 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate) 2433 { 2434 struct mlx4_en_priv *priv = netdev_priv(dev); 2435 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index]; 2436 struct mlx4_update_qp_params params; 2437 int err; 2438 2439 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT)) 2440 return -EOPNOTSUPP; 2441 2442 /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */ 2443 if (maxrate >> 12) { 2444 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS; 2445 params.rate_val = maxrate / 1000; 2446 } else if (maxrate) { 2447 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS; 2448 params.rate_val = maxrate; 2449 } else { /* zero serves to revoke the QP rate-limitation */ 2450 params.rate_unit = 0; 2451 params.rate_val = 0; 2452 } 2453 2454 err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT, 2455 ¶ms); 2456 return err; 2457 } 2458 2459 static const struct net_device_ops mlx4_netdev_ops = { 2460 .ndo_open = mlx4_en_open, 2461 .ndo_stop = mlx4_en_close, 2462 .ndo_start_xmit = mlx4_en_xmit, 2463 .ndo_select_queue = mlx4_en_select_queue, 2464 .ndo_get_stats = mlx4_en_get_stats, 2465 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2466 .ndo_set_mac_address = mlx4_en_set_mac, 2467 .ndo_validate_addr = eth_validate_addr, 2468 .ndo_change_mtu = mlx4_en_change_mtu, 2469 .ndo_do_ioctl = mlx4_en_ioctl, 2470 .ndo_tx_timeout = mlx4_en_tx_timeout, 2471 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2472 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2473 #ifdef CONFIG_NET_POLL_CONTROLLER 2474 .ndo_poll_controller = mlx4_en_netpoll, 2475 #endif 2476 .ndo_set_features = mlx4_en_set_features, 2477 .ndo_fix_features = mlx4_en_fix_features, 2478 .ndo_setup_tc = __mlx4_en_setup_tc, 2479 #ifdef CONFIG_RFS_ACCEL 2480 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2481 #endif 2482 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2483 #ifdef CONFIG_MLX4_EN_VXLAN 2484 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2485 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2486 .ndo_features_check = mlx4_en_features_check, 2487 #endif 2488 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2489 }; 2490 2491 static const struct net_device_ops mlx4_netdev_ops_master = { 2492 .ndo_open = mlx4_en_open, 2493 .ndo_stop = mlx4_en_close, 2494 .ndo_start_xmit = mlx4_en_xmit, 2495 .ndo_select_queue = mlx4_en_select_queue, 2496 .ndo_get_stats = mlx4_en_get_stats, 2497 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2498 .ndo_set_mac_address = mlx4_en_set_mac, 2499 .ndo_validate_addr = eth_validate_addr, 2500 .ndo_change_mtu = mlx4_en_change_mtu, 2501 .ndo_tx_timeout = mlx4_en_tx_timeout, 2502 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2503 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2504 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2505 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2506 .ndo_set_vf_rate = mlx4_en_set_vf_rate, 2507 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2508 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2509 .ndo_get_vf_stats = mlx4_en_get_vf_stats, 2510 .ndo_get_vf_config = mlx4_en_get_vf_config, 2511 #ifdef CONFIG_NET_POLL_CONTROLLER 2512 .ndo_poll_controller = mlx4_en_netpoll, 2513 #endif 2514 .ndo_set_features = mlx4_en_set_features, 2515 .ndo_fix_features = mlx4_en_fix_features, 2516 .ndo_setup_tc = __mlx4_en_setup_tc, 2517 #ifdef CONFIG_RFS_ACCEL 2518 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2519 #endif 2520 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2521 #ifdef CONFIG_MLX4_EN_VXLAN 2522 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2523 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2524 .ndo_features_check = mlx4_en_features_check, 2525 #endif 2526 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2527 }; 2528 2529 struct mlx4_en_bond { 2530 struct work_struct work; 2531 struct mlx4_en_priv *priv; 2532 int is_bonded; 2533 struct mlx4_port_map port_map; 2534 }; 2535 2536 static void mlx4_en_bond_work(struct work_struct *work) 2537 { 2538 struct mlx4_en_bond *bond = container_of(work, 2539 struct mlx4_en_bond, 2540 work); 2541 int err = 0; 2542 struct mlx4_dev *dev = bond->priv->mdev->dev; 2543 2544 if (bond->is_bonded) { 2545 if (!mlx4_is_bonded(dev)) { 2546 err = mlx4_bond(dev); 2547 if (err) 2548 en_err(bond->priv, "Fail to bond device\n"); 2549 } 2550 if (!err) { 2551 err = mlx4_port_map_set(dev, &bond->port_map); 2552 if (err) 2553 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n", 2554 bond->port_map.port1, 2555 bond->port_map.port2, 2556 err); 2557 } 2558 } else if (mlx4_is_bonded(dev)) { 2559 err = mlx4_unbond(dev); 2560 if (err) 2561 en_err(bond->priv, "Fail to unbond device\n"); 2562 } 2563 dev_put(bond->priv->dev); 2564 kfree(bond); 2565 } 2566 2567 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded, 2568 u8 v2p_p1, u8 v2p_p2) 2569 { 2570 struct mlx4_en_bond *bond = NULL; 2571 2572 bond = kzalloc(sizeof(*bond), GFP_ATOMIC); 2573 if (!bond) 2574 return -ENOMEM; 2575 2576 INIT_WORK(&bond->work, mlx4_en_bond_work); 2577 bond->priv = priv; 2578 bond->is_bonded = is_bonded; 2579 bond->port_map.port1 = v2p_p1; 2580 bond->port_map.port2 = v2p_p2; 2581 dev_hold(priv->dev); 2582 queue_work(priv->mdev->workqueue, &bond->work); 2583 return 0; 2584 } 2585 2586 int mlx4_en_netdev_event(struct notifier_block *this, 2587 unsigned long event, void *ptr) 2588 { 2589 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 2590 u8 port = 0; 2591 struct mlx4_en_dev *mdev; 2592 struct mlx4_dev *dev; 2593 int i, num_eth_ports = 0; 2594 bool do_bond = true; 2595 struct mlx4_en_priv *priv; 2596 u8 v2p_port1 = 0; 2597 u8 v2p_port2 = 0; 2598 2599 if (!net_eq(dev_net(ndev), &init_net)) 2600 return NOTIFY_DONE; 2601 2602 mdev = container_of(this, struct mlx4_en_dev, nb); 2603 dev = mdev->dev; 2604 2605 /* Go into this mode only when two network devices set on two ports 2606 * of the same mlx4 device are slaves of the same bonding master 2607 */ 2608 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { 2609 ++num_eth_ports; 2610 if (!port && (mdev->pndev[i] == ndev)) 2611 port = i; 2612 mdev->upper[i] = mdev->pndev[i] ? 2613 netdev_master_upper_dev_get(mdev->pndev[i]) : NULL; 2614 /* condition not met: network device is a slave */ 2615 if (!mdev->upper[i]) 2616 do_bond = false; 2617 if (num_eth_ports < 2) 2618 continue; 2619 /* condition not met: same master */ 2620 if (mdev->upper[i] != mdev->upper[i-1]) 2621 do_bond = false; 2622 } 2623 /* condition not met: 2 salves */ 2624 do_bond = (num_eth_ports == 2) ? do_bond : false; 2625 2626 /* handle only events that come with enough info */ 2627 if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port) 2628 return NOTIFY_DONE; 2629 2630 priv = netdev_priv(ndev); 2631 if (do_bond) { 2632 struct netdev_notifier_bonding_info *notifier_info = ptr; 2633 struct netdev_bonding_info *bonding_info = 2634 ¬ifier_info->bonding_info; 2635 2636 /* required mode 1, 2 or 4 */ 2637 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) && 2638 (bonding_info->master.bond_mode != BOND_MODE_XOR) && 2639 (bonding_info->master.bond_mode != BOND_MODE_8023AD)) 2640 do_bond = false; 2641 2642 /* require exactly 2 slaves */ 2643 if (bonding_info->master.num_slaves != 2) 2644 do_bond = false; 2645 2646 /* calc v2p */ 2647 if (do_bond) { 2648 if (bonding_info->master.bond_mode == 2649 BOND_MODE_ACTIVEBACKUP) { 2650 /* in active-backup mode virtual ports are 2651 * mapped to the physical port of the active 2652 * slave */ 2653 if (bonding_info->slave.state == 2654 BOND_STATE_BACKUP) { 2655 if (port == 1) { 2656 v2p_port1 = 2; 2657 v2p_port2 = 2; 2658 } else { 2659 v2p_port1 = 1; 2660 v2p_port2 = 1; 2661 } 2662 } else { /* BOND_STATE_ACTIVE */ 2663 if (port == 1) { 2664 v2p_port1 = 1; 2665 v2p_port2 = 1; 2666 } else { 2667 v2p_port1 = 2; 2668 v2p_port2 = 2; 2669 } 2670 } 2671 } else { /* Active-Active */ 2672 /* in active-active mode a virtual port is 2673 * mapped to the native physical port if and only 2674 * if the physical port is up */ 2675 __s8 link = bonding_info->slave.link; 2676 2677 if (port == 1) 2678 v2p_port2 = 2; 2679 else 2680 v2p_port1 = 1; 2681 if ((link == BOND_LINK_UP) || 2682 (link == BOND_LINK_FAIL)) { 2683 if (port == 1) 2684 v2p_port1 = 1; 2685 else 2686 v2p_port2 = 2; 2687 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */ 2688 if (port == 1) 2689 v2p_port1 = 2; 2690 else 2691 v2p_port2 = 1; 2692 } 2693 } 2694 } 2695 } 2696 2697 mlx4_en_queue_bond_work(priv, do_bond, 2698 v2p_port1, v2p_port2); 2699 2700 return NOTIFY_DONE; 2701 } 2702 2703 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev, 2704 struct mlx4_en_stats_bitmap *stats_bitmap, 2705 u8 rx_ppp, u8 rx_pause, 2706 u8 tx_ppp, u8 tx_pause) 2707 { 2708 int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS; 2709 2710 if (!mlx4_is_slave(dev) && 2711 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) { 2712 mutex_lock(&stats_bitmap->mutex); 2713 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS); 2714 2715 if (rx_ppp) 2716 bitmap_set(stats_bitmap->bitmap, last_i, 2717 NUM_FLOW_PRIORITY_STATS_RX); 2718 last_i += NUM_FLOW_PRIORITY_STATS_RX; 2719 2720 if (rx_pause && !(rx_ppp)) 2721 bitmap_set(stats_bitmap->bitmap, last_i, 2722 NUM_FLOW_STATS_RX); 2723 last_i += NUM_FLOW_STATS_RX; 2724 2725 if (tx_ppp) 2726 bitmap_set(stats_bitmap->bitmap, last_i, 2727 NUM_FLOW_PRIORITY_STATS_TX); 2728 last_i += NUM_FLOW_PRIORITY_STATS_TX; 2729 2730 if (tx_pause && !(tx_ppp)) 2731 bitmap_set(stats_bitmap->bitmap, last_i, 2732 NUM_FLOW_STATS_TX); 2733 last_i += NUM_FLOW_STATS_TX; 2734 2735 mutex_unlock(&stats_bitmap->mutex); 2736 } 2737 } 2738 2739 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev, 2740 struct mlx4_en_stats_bitmap *stats_bitmap, 2741 u8 rx_ppp, u8 rx_pause, 2742 u8 tx_ppp, u8 tx_pause) 2743 { 2744 int last_i = 0; 2745 2746 mutex_init(&stats_bitmap->mutex); 2747 bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS); 2748 2749 if (mlx4_is_slave(dev)) { 2750 bitmap_set(stats_bitmap->bitmap, last_i + 2751 MLX4_FIND_NETDEV_STAT(rx_packets), 1); 2752 bitmap_set(stats_bitmap->bitmap, last_i + 2753 MLX4_FIND_NETDEV_STAT(tx_packets), 1); 2754 bitmap_set(stats_bitmap->bitmap, last_i + 2755 MLX4_FIND_NETDEV_STAT(rx_bytes), 1); 2756 bitmap_set(stats_bitmap->bitmap, last_i + 2757 MLX4_FIND_NETDEV_STAT(tx_bytes), 1); 2758 bitmap_set(stats_bitmap->bitmap, last_i + 2759 MLX4_FIND_NETDEV_STAT(rx_dropped), 1); 2760 bitmap_set(stats_bitmap->bitmap, last_i + 2761 MLX4_FIND_NETDEV_STAT(tx_dropped), 1); 2762 } else { 2763 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS); 2764 } 2765 last_i += NUM_MAIN_STATS; 2766 2767 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS); 2768 last_i += NUM_PORT_STATS; 2769 2770 if (mlx4_is_master(dev)) 2771 bitmap_set(stats_bitmap->bitmap, last_i, 2772 NUM_PF_STATS); 2773 last_i += NUM_PF_STATS; 2774 2775 mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap, 2776 rx_ppp, rx_pause, 2777 tx_ppp, tx_pause); 2778 last_i += NUM_FLOW_STATS; 2779 2780 if (!mlx4_is_slave(dev)) 2781 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS); 2782 } 2783 2784 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 2785 struct mlx4_en_port_profile *prof) 2786 { 2787 struct net_device *dev; 2788 struct mlx4_en_priv *priv; 2789 int i; 2790 int err; 2791 2792 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 2793 MAX_TX_RINGS, MAX_RX_RINGS); 2794 if (dev == NULL) 2795 return -ENOMEM; 2796 2797 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 2798 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 2799 2800 SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev); 2801 dev->dev_port = port - 1; 2802 2803 /* 2804 * Initialize driver private data 2805 */ 2806 2807 priv = netdev_priv(dev); 2808 memset(priv, 0, sizeof(struct mlx4_en_priv)); 2809 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 2810 spin_lock_init(&priv->stats_lock); 2811 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 2812 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 2813 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 2814 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 2815 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 2816 #ifdef CONFIG_MLX4_EN_VXLAN 2817 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads); 2818 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads); 2819 #endif 2820 #ifdef CONFIG_RFS_ACCEL 2821 INIT_LIST_HEAD(&priv->filters); 2822 spin_lock_init(&priv->filters_lock); 2823 #endif 2824 2825 priv->dev = dev; 2826 priv->mdev = mdev; 2827 priv->ddev = &mdev->pdev->dev; 2828 priv->prof = prof; 2829 priv->port = port; 2830 priv->port_up = false; 2831 priv->flags = prof->flags; 2832 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME; 2833 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 2834 MLX4_WQE_CTRL_SOLICITED); 2835 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 2836 priv->tx_ring_num = prof->tx_ring_num; 2837 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK; 2838 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key)); 2839 2840 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 2841 GFP_KERNEL); 2842 if (!priv->tx_ring) { 2843 err = -ENOMEM; 2844 goto out; 2845 } 2846 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 2847 GFP_KERNEL); 2848 if (!priv->tx_cq) { 2849 err = -ENOMEM; 2850 goto out; 2851 } 2852 priv->rx_ring_num = prof->rx_ring_num; 2853 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 2854 priv->cqe_size = mdev->dev->caps.cqe_size; 2855 priv->mac_index = -1; 2856 priv->msg_enable = MLX4_EN_MSG_LEVEL; 2857 #ifdef CONFIG_MLX4_EN_DCB 2858 if (!mlx4_is_slave(priv->mdev->dev)) { 2859 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) { 2860 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 2861 } else { 2862 en_info(priv, "enabling only PFC DCB ops\n"); 2863 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 2864 } 2865 } 2866 #endif 2867 2868 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 2869 INIT_HLIST_HEAD(&priv->mac_hash[i]); 2870 2871 /* Query for default mac and max mtu */ 2872 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 2873 2874 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] & 2875 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP) 2876 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP; 2877 2878 /* Set default MAC */ 2879 dev->addr_len = ETH_ALEN; 2880 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 2881 if (!is_valid_ether_addr(dev->dev_addr)) { 2882 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 2883 priv->port, dev->dev_addr); 2884 err = -EINVAL; 2885 goto out; 2886 } else if (mlx4_is_slave(priv->mdev->dev) && 2887 (priv->mdev->dev->port_random_macs & 1 << priv->port)) { 2888 /* Random MAC was assigned in mlx4_slave_cap 2889 * in mlx4_core module 2890 */ 2891 dev->addr_assign_type |= NET_ADDR_RANDOM; 2892 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 2893 } 2894 2895 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac)); 2896 2897 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2898 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2899 err = mlx4_en_alloc_resources(priv); 2900 if (err) 2901 goto out; 2902 2903 /* Initialize time stamping config */ 2904 priv->hwtstamp_config.flags = 0; 2905 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 2906 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 2907 2908 /* Allocate page for receive rings */ 2909 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 2910 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE); 2911 if (err) { 2912 en_err(priv, "Failed to allocate page for rx qps\n"); 2913 goto out; 2914 } 2915 priv->allocated = 1; 2916 2917 /* 2918 * Initialize netdev entry points 2919 */ 2920 if (mlx4_is_master(priv->mdev->dev)) 2921 dev->netdev_ops = &mlx4_netdev_ops_master; 2922 else 2923 dev->netdev_ops = &mlx4_netdev_ops; 2924 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 2925 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 2926 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 2927 2928 dev->ethtool_ops = &mlx4_en_ethtool_ops; 2929 2930 /* 2931 * Set driver features 2932 */ 2933 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2934 if (mdev->LSO_support) 2935 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2936 2937 dev->vlan_features = dev->hw_features; 2938 2939 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 2940 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 2941 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 2942 NETIF_F_HW_VLAN_CTAG_FILTER; 2943 dev->hw_features |= NETIF_F_LOOPBACK | 2944 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 2945 2946 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) { 2947 dev->features |= NETIF_F_HW_VLAN_STAG_RX | 2948 NETIF_F_HW_VLAN_STAG_FILTER; 2949 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX; 2950 } 2951 2952 if (mlx4_is_slave(mdev->dev)) { 2953 int phv; 2954 2955 err = get_phv_bit(mdev->dev, port, &phv); 2956 if (!err && phv) { 2957 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 2958 priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV; 2959 } 2960 } else { 2961 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN && 2962 !(mdev->dev->caps.flags2 & 2963 MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 2964 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 2965 } 2966 2967 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) 2968 dev->hw_features |= NETIF_F_RXFCS; 2969 2970 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS) 2971 dev->hw_features |= NETIF_F_RXALL; 2972 2973 if (mdev->dev->caps.steering_mode == 2974 MLX4_STEERING_MODE_DEVICE_MANAGED && 2975 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC) 2976 dev->hw_features |= NETIF_F_NTUPLE; 2977 2978 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 2979 dev->priv_flags |= IFF_UNICAST_FLT; 2980 2981 /* Setting a default hash function value */ 2982 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) { 2983 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 2984 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) { 2985 priv->rss_hash_fn = ETH_RSS_HASH_XOR; 2986 } else { 2987 en_warn(priv, 2988 "No RSS hash capabilities exposed, using Toeplitz\n"); 2989 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 2990 } 2991 2992 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 2993 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; 2994 dev->features |= NETIF_F_GSO_UDP_TUNNEL; 2995 } 2996 2997 mdev->pndev[port] = dev; 2998 mdev->upper[port] = NULL; 2999 3000 netif_carrier_off(dev); 3001 mlx4_en_set_default_moderation(priv); 3002 3003 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 3004 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 3005 3006 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 3007 3008 /* Configure port */ 3009 mlx4_en_calc_rx_buf(dev); 3010 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 3011 priv->rx_skb_size + ETH_FCS_LEN, 3012 prof->tx_pause, prof->tx_ppp, 3013 prof->rx_pause, prof->rx_ppp); 3014 if (err) { 3015 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 3016 priv->port, err); 3017 goto out; 3018 } 3019 3020 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 3021 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 3022 if (err) { 3023 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 3024 err); 3025 goto out; 3026 } 3027 } 3028 3029 /* Init port */ 3030 en_warn(priv, "Initializing port\n"); 3031 err = mlx4_INIT_PORT(mdev->dev, priv->port); 3032 if (err) { 3033 en_err(priv, "Failed Initializing port\n"); 3034 goto out; 3035 } 3036 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 3037 3038 /* Initialize time stamp mechanism */ 3039 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 3040 mlx4_en_init_timestamp(mdev); 3041 3042 queue_delayed_work(mdev->workqueue, &priv->service_task, 3043 SERVICE_TASK_DELAY); 3044 3045 mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap, 3046 mdev->profile.prof[priv->port].rx_ppp, 3047 mdev->profile.prof[priv->port].rx_pause, 3048 mdev->profile.prof[priv->port].tx_ppp, 3049 mdev->profile.prof[priv->port].tx_pause); 3050 3051 err = register_netdev(dev); 3052 if (err) { 3053 en_err(priv, "Netdev registration failed for port %d\n", port); 3054 goto out; 3055 } 3056 3057 priv->registered = 1; 3058 devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port), 3059 dev); 3060 3061 return 0; 3062 3063 out: 3064 mlx4_en_destroy_netdev(dev); 3065 return err; 3066 } 3067 3068 int mlx4_en_reset_config(struct net_device *dev, 3069 struct hwtstamp_config ts_config, 3070 netdev_features_t features) 3071 { 3072 struct mlx4_en_priv *priv = netdev_priv(dev); 3073 struct mlx4_en_dev *mdev = priv->mdev; 3074 int port_up = 0; 3075 int err = 0; 3076 3077 if (priv->hwtstamp_config.tx_type == ts_config.tx_type && 3078 priv->hwtstamp_config.rx_filter == ts_config.rx_filter && 3079 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3080 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) 3081 return 0; /* Nothing to change */ 3082 3083 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3084 (features & NETIF_F_HW_VLAN_CTAG_RX) && 3085 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) { 3086 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n"); 3087 return -EINVAL; 3088 } 3089 3090 mutex_lock(&mdev->state_lock); 3091 if (priv->port_up) { 3092 port_up = 1; 3093 mlx4_en_stop_port(dev, 1); 3094 } 3095 3096 mlx4_en_free_resources(priv); 3097 3098 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n", 3099 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX)); 3100 3101 priv->hwtstamp_config.tx_type = ts_config.tx_type; 3102 priv->hwtstamp_config.rx_filter = ts_config.rx_filter; 3103 3104 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 3105 if (features & NETIF_F_HW_VLAN_CTAG_RX) 3106 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3107 else 3108 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3109 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) { 3110 /* RX time-stamping is OFF, update the RX vlan offload 3111 * to the latest wanted state 3112 */ 3113 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX) 3114 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3115 else 3116 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3117 } 3118 3119 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) { 3120 if (features & NETIF_F_RXFCS) 3121 dev->features |= NETIF_F_RXFCS; 3122 else 3123 dev->features &= ~NETIF_F_RXFCS; 3124 } 3125 3126 /* RX vlan offload and RX time-stamping can't co-exist ! 3127 * Regardless of the caller's choice, 3128 * Turn Off RX vlan offload in case of time-stamping is ON 3129 */ 3130 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) { 3131 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 3132 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n"); 3133 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3134 } 3135 3136 err = mlx4_en_alloc_resources(priv); 3137 if (err) { 3138 en_err(priv, "Failed reallocating port resources\n"); 3139 goto out; 3140 } 3141 if (port_up) { 3142 err = mlx4_en_start_port(dev); 3143 if (err) 3144 en_err(priv, "Failed starting port\n"); 3145 } 3146 3147 out: 3148 mutex_unlock(&mdev->state_lock); 3149 netdev_features_change(dev); 3150 return err; 3151 } 3152