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 rtnl_link_stats64 * 1300 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 1301 { 1302 struct mlx4_en_priv *priv = netdev_priv(dev); 1303 1304 spin_lock_bh(&priv->stats_lock); 1305 netdev_stats_to_stats64(stats, &dev->stats); 1306 spin_unlock_bh(&priv->stats_lock); 1307 1308 return stats; 1309 } 1310 1311 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1312 { 1313 struct mlx4_en_cq *cq; 1314 int i; 1315 1316 /* If we haven't received a specific coalescing setting 1317 * (module param), we set the moderation parameters as follows: 1318 * - moder_cnt is set to the number of mtu sized packets to 1319 * satisfy our coalescing target. 1320 * - moder_time is set to a fixed value. 1321 */ 1322 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1323 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1324 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1325 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1326 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1327 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1328 1329 /* Setup cq moderation params */ 1330 for (i = 0; i < priv->rx_ring_num; i++) { 1331 cq = priv->rx_cq[i]; 1332 cq->moder_cnt = priv->rx_frames; 1333 cq->moder_time = priv->rx_usecs; 1334 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1335 priv->last_moder_packets[i] = 0; 1336 priv->last_moder_bytes[i] = 0; 1337 } 1338 1339 for (i = 0; i < priv->tx_ring_num; i++) { 1340 cq = priv->tx_cq[i]; 1341 cq->moder_cnt = priv->tx_frames; 1342 cq->moder_time = priv->tx_usecs; 1343 } 1344 1345 /* Reset auto-moderation params */ 1346 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1347 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1348 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1349 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1350 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1351 priv->adaptive_rx_coal = 1; 1352 priv->last_moder_jiffies = 0; 1353 priv->last_moder_tx_packets = 0; 1354 } 1355 1356 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1357 { 1358 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1359 struct mlx4_en_cq *cq; 1360 unsigned long packets; 1361 unsigned long rate; 1362 unsigned long avg_pkt_size; 1363 unsigned long rx_packets; 1364 unsigned long rx_bytes; 1365 unsigned long rx_pkt_diff; 1366 int moder_time; 1367 int ring, err; 1368 1369 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1370 return; 1371 1372 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1373 spin_lock_bh(&priv->stats_lock); 1374 rx_packets = priv->rx_ring[ring]->packets; 1375 rx_bytes = priv->rx_ring[ring]->bytes; 1376 spin_unlock_bh(&priv->stats_lock); 1377 1378 rx_pkt_diff = ((unsigned long) (rx_packets - 1379 priv->last_moder_packets[ring])); 1380 packets = rx_pkt_diff; 1381 rate = packets * HZ / period; 1382 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1383 priv->last_moder_bytes[ring])) / packets : 0; 1384 1385 /* Apply auto-moderation only when packet rate 1386 * exceeds a rate that it matters */ 1387 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1388 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1389 if (rate < priv->pkt_rate_low) 1390 moder_time = priv->rx_usecs_low; 1391 else if (rate > priv->pkt_rate_high) 1392 moder_time = priv->rx_usecs_high; 1393 else 1394 moder_time = (rate - priv->pkt_rate_low) * 1395 (priv->rx_usecs_high - priv->rx_usecs_low) / 1396 (priv->pkt_rate_high - priv->pkt_rate_low) + 1397 priv->rx_usecs_low; 1398 } else { 1399 moder_time = priv->rx_usecs_low; 1400 } 1401 1402 if (moder_time != priv->last_moder_time[ring]) { 1403 priv->last_moder_time[ring] = moder_time; 1404 cq = priv->rx_cq[ring]; 1405 cq->moder_time = moder_time; 1406 cq->moder_cnt = priv->rx_frames; 1407 err = mlx4_en_set_cq_moder(priv, cq); 1408 if (err) 1409 en_err(priv, "Failed modifying moderation for cq:%d\n", 1410 ring); 1411 } 1412 priv->last_moder_packets[ring] = rx_packets; 1413 priv->last_moder_bytes[ring] = rx_bytes; 1414 } 1415 1416 priv->last_moder_jiffies = jiffies; 1417 } 1418 1419 static void mlx4_en_do_get_stats(struct work_struct *work) 1420 { 1421 struct delayed_work *delay = to_delayed_work(work); 1422 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1423 stats_task); 1424 struct mlx4_en_dev *mdev = priv->mdev; 1425 int err; 1426 1427 mutex_lock(&mdev->state_lock); 1428 if (mdev->device_up) { 1429 if (priv->port_up) { 1430 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1431 if (err) 1432 en_dbg(HW, priv, "Could not update stats\n"); 1433 1434 mlx4_en_auto_moderation(priv); 1435 } 1436 1437 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1438 } 1439 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1440 mlx4_en_do_set_mac(priv, priv->current_mac); 1441 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1442 } 1443 mutex_unlock(&mdev->state_lock); 1444 } 1445 1446 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1447 * periodically 1448 */ 1449 static void mlx4_en_service_task(struct work_struct *work) 1450 { 1451 struct delayed_work *delay = to_delayed_work(work); 1452 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1453 service_task); 1454 struct mlx4_en_dev *mdev = priv->mdev; 1455 1456 mutex_lock(&mdev->state_lock); 1457 if (mdev->device_up) { 1458 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1459 mlx4_en_ptp_overflow_check(mdev); 1460 1461 mlx4_en_recover_from_oom(priv); 1462 queue_delayed_work(mdev->workqueue, &priv->service_task, 1463 SERVICE_TASK_DELAY); 1464 } 1465 mutex_unlock(&mdev->state_lock); 1466 } 1467 1468 static void mlx4_en_linkstate(struct work_struct *work) 1469 { 1470 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1471 linkstate_task); 1472 struct mlx4_en_dev *mdev = priv->mdev; 1473 int linkstate = priv->link_state; 1474 1475 mutex_lock(&mdev->state_lock); 1476 /* If observable port state changed set carrier state and 1477 * report to system log */ 1478 if (priv->last_link_state != linkstate) { 1479 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1480 en_info(priv, "Link Down\n"); 1481 netif_carrier_off(priv->dev); 1482 } else { 1483 en_info(priv, "Link Up\n"); 1484 netif_carrier_on(priv->dev); 1485 } 1486 } 1487 priv->last_link_state = linkstate; 1488 mutex_unlock(&mdev->state_lock); 1489 } 1490 1491 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1492 { 1493 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx]; 1494 int numa_node = priv->mdev->dev->numa_node; 1495 1496 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL)) 1497 return -ENOMEM; 1498 1499 cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node), 1500 ring->affinity_mask); 1501 return 0; 1502 } 1503 1504 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1505 { 1506 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask); 1507 } 1508 1509 int mlx4_en_start_port(struct net_device *dev) 1510 { 1511 struct mlx4_en_priv *priv = netdev_priv(dev); 1512 struct mlx4_en_dev *mdev = priv->mdev; 1513 struct mlx4_en_cq *cq; 1514 struct mlx4_en_tx_ring *tx_ring; 1515 int rx_index = 0; 1516 int tx_index = 0; 1517 int err = 0; 1518 int i; 1519 int j; 1520 u8 mc_list[16] = {0}; 1521 1522 if (priv->port_up) { 1523 en_dbg(DRV, priv, "start port called while port already up\n"); 1524 return 0; 1525 } 1526 1527 INIT_LIST_HEAD(&priv->mc_list); 1528 INIT_LIST_HEAD(&priv->curr_list); 1529 INIT_LIST_HEAD(&priv->ethtool_list); 1530 memset(&priv->ethtool_rules[0], 0, 1531 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1532 1533 /* Calculate Rx buf size */ 1534 dev->mtu = min(dev->mtu, priv->max_mtu); 1535 mlx4_en_calc_rx_buf(dev); 1536 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1537 1538 /* Configure rx cq's and rings */ 1539 err = mlx4_en_activate_rx_rings(priv); 1540 if (err) { 1541 en_err(priv, "Failed to activate RX rings\n"); 1542 return err; 1543 } 1544 for (i = 0; i < priv->rx_ring_num; i++) { 1545 cq = priv->rx_cq[i]; 1546 1547 err = mlx4_en_init_affinity_hint(priv, i); 1548 if (err) { 1549 en_err(priv, "Failed preparing IRQ affinity hint\n"); 1550 goto cq_err; 1551 } 1552 1553 err = mlx4_en_activate_cq(priv, cq, i); 1554 if (err) { 1555 en_err(priv, "Failed activating Rx CQ\n"); 1556 mlx4_en_free_affinity_hint(priv, i); 1557 goto cq_err; 1558 } 1559 1560 for (j = 0; j < cq->size; j++) { 1561 struct mlx4_cqe *cqe = NULL; 1562 1563 cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) + 1564 priv->cqe_factor; 1565 cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1566 } 1567 1568 err = mlx4_en_set_cq_moder(priv, cq); 1569 if (err) { 1570 en_err(priv, "Failed setting cq moderation parameters\n"); 1571 mlx4_en_deactivate_cq(priv, cq); 1572 mlx4_en_free_affinity_hint(priv, i); 1573 goto cq_err; 1574 } 1575 mlx4_en_arm_cq(priv, cq); 1576 priv->rx_ring[i]->cqn = cq->mcq.cqn; 1577 ++rx_index; 1578 } 1579 1580 /* Set qp number */ 1581 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1582 err = mlx4_en_get_qp(priv); 1583 if (err) { 1584 en_err(priv, "Failed getting eth qp\n"); 1585 goto cq_err; 1586 } 1587 mdev->mac_removed[priv->port] = 0; 1588 1589 priv->counter_index = 1590 mlx4_get_default_counter_index(mdev->dev, priv->port); 1591 1592 err = mlx4_en_config_rss_steer(priv); 1593 if (err) { 1594 en_err(priv, "Failed configuring rss steering\n"); 1595 goto mac_err; 1596 } 1597 1598 err = mlx4_en_create_drop_qp(priv); 1599 if (err) 1600 goto rss_err; 1601 1602 /* Configure tx cq's and rings */ 1603 for (i = 0; i < priv->tx_ring_num; i++) { 1604 /* Configure cq */ 1605 cq = priv->tx_cq[i]; 1606 err = mlx4_en_activate_cq(priv, cq, i); 1607 if (err) { 1608 en_err(priv, "Failed allocating Tx CQ\n"); 1609 goto tx_err; 1610 } 1611 err = mlx4_en_set_cq_moder(priv, cq); 1612 if (err) { 1613 en_err(priv, "Failed setting cq moderation parameters\n"); 1614 mlx4_en_deactivate_cq(priv, cq); 1615 goto tx_err; 1616 } 1617 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i); 1618 cq->buf->wqe_index = cpu_to_be16(0xffff); 1619 1620 /* Configure ring */ 1621 tx_ring = priv->tx_ring[i]; 1622 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, 1623 i / priv->num_tx_rings_p_up); 1624 if (err) { 1625 en_err(priv, "Failed allocating Tx ring\n"); 1626 mlx4_en_deactivate_cq(priv, cq); 1627 goto tx_err; 1628 } 1629 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1630 1631 /* Arm CQ for TX completions */ 1632 mlx4_en_arm_cq(priv, cq); 1633 1634 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1635 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1636 *((u32 *) (tx_ring->buf + j)) = 0xffffffff; 1637 ++tx_index; 1638 } 1639 1640 /* Configure port */ 1641 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1642 priv->rx_skb_size + ETH_FCS_LEN, 1643 priv->prof->tx_pause, 1644 priv->prof->tx_ppp, 1645 priv->prof->rx_pause, 1646 priv->prof->rx_ppp); 1647 if (err) { 1648 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1649 priv->port, err); 1650 goto tx_err; 1651 } 1652 /* Set default qp number */ 1653 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1654 if (err) { 1655 en_err(priv, "Failed setting default qp numbers\n"); 1656 goto tx_err; 1657 } 1658 1659 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 1660 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 1661 if (err) { 1662 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 1663 err); 1664 goto tx_err; 1665 } 1666 } 1667 1668 /* Init port */ 1669 en_dbg(HW, priv, "Initializing port\n"); 1670 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1671 if (err) { 1672 en_err(priv, "Failed Initializing port\n"); 1673 goto tx_err; 1674 } 1675 1676 /* Set Unicast and VXLAN steering rules */ 1677 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 && 1678 mlx4_en_set_rss_steer_rules(priv)) 1679 mlx4_warn(mdev, "Failed setting steering rules\n"); 1680 1681 /* Attach rx QP to bradcast address */ 1682 eth_broadcast_addr(&mc_list[10]); 1683 mc_list[5] = priv->port; /* needed for B0 steering support */ 1684 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1685 priv->port, 0, MLX4_PROT_ETH, 1686 &priv->broadcast_id)) 1687 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1688 1689 /* Must redo promiscuous mode setup. */ 1690 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1691 1692 /* Schedule multicast task to populate multicast list */ 1693 queue_work(mdev->workqueue, &priv->rx_mode_task); 1694 1695 #ifdef CONFIG_MLX4_EN_VXLAN 1696 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 1697 vxlan_get_rx_port(dev); 1698 #endif 1699 priv->port_up = true; 1700 netif_tx_start_all_queues(dev); 1701 netif_device_attach(dev); 1702 1703 return 0; 1704 1705 tx_err: 1706 while (tx_index--) { 1707 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]); 1708 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]); 1709 } 1710 mlx4_en_destroy_drop_qp(priv); 1711 rss_err: 1712 mlx4_en_release_rss_steer(priv); 1713 mac_err: 1714 mlx4_en_put_qp(priv); 1715 cq_err: 1716 while (rx_index--) { 1717 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); 1718 mlx4_en_free_affinity_hint(priv, rx_index); 1719 } 1720 for (i = 0; i < priv->rx_ring_num; i++) 1721 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1722 1723 return err; /* need to close devices */ 1724 } 1725 1726 1727 void mlx4_en_stop_port(struct net_device *dev, int detach) 1728 { 1729 struct mlx4_en_priv *priv = netdev_priv(dev); 1730 struct mlx4_en_dev *mdev = priv->mdev; 1731 struct mlx4_en_mc_list *mclist, *tmp; 1732 struct ethtool_flow_id *flow, *tmp_flow; 1733 int i; 1734 u8 mc_list[16] = {0}; 1735 1736 if (!priv->port_up) { 1737 en_dbg(DRV, priv, "stop port called while port already down\n"); 1738 return; 1739 } 1740 1741 /* close port*/ 1742 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1743 1744 /* Synchronize with tx routine */ 1745 netif_tx_lock_bh(dev); 1746 if (detach) 1747 netif_device_detach(dev); 1748 netif_tx_stop_all_queues(dev); 1749 netif_tx_unlock_bh(dev); 1750 1751 netif_tx_disable(dev); 1752 1753 /* Set port as not active */ 1754 priv->port_up = false; 1755 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 1756 1757 /* Promsicuous mode */ 1758 if (mdev->dev->caps.steering_mode == 1759 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1760 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | 1761 MLX4_EN_FLAG_MC_PROMISC); 1762 mlx4_flow_steer_promisc_remove(mdev->dev, 1763 priv->port, 1764 MLX4_FS_ALL_DEFAULT); 1765 mlx4_flow_steer_promisc_remove(mdev->dev, 1766 priv->port, 1767 MLX4_FS_MC_DEFAULT); 1768 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { 1769 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 1770 1771 /* Disable promiscouos mode */ 1772 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, 1773 priv->port); 1774 1775 /* Disable Multicast promisc */ 1776 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1777 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, 1778 priv->port); 1779 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1780 } 1781 } 1782 1783 /* Detach All multicasts */ 1784 eth_broadcast_addr(&mc_list[10]); 1785 mc_list[5] = priv->port; /* needed for B0 steering support */ 1786 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1787 MLX4_PROT_ETH, priv->broadcast_id); 1788 list_for_each_entry(mclist, &priv->curr_list, list) { 1789 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1790 mc_list[5] = priv->port; 1791 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, 1792 mc_list, MLX4_PROT_ETH, mclist->reg_id); 1793 if (mclist->tunnel_reg_id) 1794 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id); 1795 } 1796 mlx4_en_clear_list(dev); 1797 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1798 list_del(&mclist->list); 1799 kfree(mclist); 1800 } 1801 1802 /* Flush multicast filter */ 1803 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); 1804 1805 /* Remove flow steering rules for the port*/ 1806 if (mdev->dev->caps.steering_mode == 1807 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1808 ASSERT_RTNL(); 1809 list_for_each_entry_safe(flow, tmp_flow, 1810 &priv->ethtool_list, list) { 1811 mlx4_flow_detach(mdev->dev, flow->id); 1812 list_del(&flow->list); 1813 } 1814 } 1815 1816 mlx4_en_destroy_drop_qp(priv); 1817 1818 /* Free TX Rings */ 1819 for (i = 0; i < priv->tx_ring_num; i++) { 1820 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]); 1821 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]); 1822 } 1823 msleep(10); 1824 1825 for (i = 0; i < priv->tx_ring_num; i++) 1826 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]); 1827 1828 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 1829 mlx4_en_delete_rss_steer_rules(priv); 1830 1831 /* Free RSS qps */ 1832 mlx4_en_release_rss_steer(priv); 1833 1834 /* Unregister Mac address for the port */ 1835 mlx4_en_put_qp(priv); 1836 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN)) 1837 mdev->mac_removed[priv->port] = 1; 1838 1839 /* Free RX Rings */ 1840 for (i = 0; i < priv->rx_ring_num; i++) { 1841 struct mlx4_en_cq *cq = priv->rx_cq[i]; 1842 1843 napi_synchronize(&cq->napi); 1844 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1845 mlx4_en_deactivate_cq(priv, cq); 1846 1847 mlx4_en_free_affinity_hint(priv, i); 1848 } 1849 } 1850 1851 static void mlx4_en_restart(struct work_struct *work) 1852 { 1853 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1854 watchdog_task); 1855 struct mlx4_en_dev *mdev = priv->mdev; 1856 struct net_device *dev = priv->dev; 1857 1858 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1859 1860 rtnl_lock(); 1861 mutex_lock(&mdev->state_lock); 1862 if (priv->port_up) { 1863 mlx4_en_stop_port(dev, 1); 1864 if (mlx4_en_start_port(dev)) 1865 en_err(priv, "Failed restarting port %d\n", priv->port); 1866 } 1867 mutex_unlock(&mdev->state_lock); 1868 rtnl_unlock(); 1869 } 1870 1871 static void mlx4_en_clear_stats(struct net_device *dev) 1872 { 1873 struct mlx4_en_priv *priv = netdev_priv(dev); 1874 struct mlx4_en_dev *mdev = priv->mdev; 1875 int i; 1876 1877 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1878 en_dbg(HW, priv, "Failed dumping statistics\n"); 1879 1880 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1881 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1882 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1883 memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats)); 1884 memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats)); 1885 memset(&priv->rx_priority_flowstats, 0, 1886 sizeof(priv->rx_priority_flowstats)); 1887 memset(&priv->tx_priority_flowstats, 0, 1888 sizeof(priv->tx_priority_flowstats)); 1889 memset(&priv->pf_stats, 0, sizeof(priv->pf_stats)); 1890 1891 for (i = 0; i < priv->tx_ring_num; i++) { 1892 priv->tx_ring[i]->bytes = 0; 1893 priv->tx_ring[i]->packets = 0; 1894 priv->tx_ring[i]->tx_csum = 0; 1895 priv->tx_ring[i]->tx_dropped = 0; 1896 priv->tx_ring[i]->queue_stopped = 0; 1897 priv->tx_ring[i]->wake_queue = 0; 1898 priv->tx_ring[i]->tso_packets = 0; 1899 priv->tx_ring[i]->xmit_more = 0; 1900 } 1901 for (i = 0; i < priv->rx_ring_num; i++) { 1902 priv->rx_ring[i]->bytes = 0; 1903 priv->rx_ring[i]->packets = 0; 1904 priv->rx_ring[i]->csum_ok = 0; 1905 priv->rx_ring[i]->csum_none = 0; 1906 priv->rx_ring[i]->csum_complete = 0; 1907 } 1908 } 1909 1910 static int mlx4_en_open(struct net_device *dev) 1911 { 1912 struct mlx4_en_priv *priv = netdev_priv(dev); 1913 struct mlx4_en_dev *mdev = priv->mdev; 1914 int err = 0; 1915 1916 mutex_lock(&mdev->state_lock); 1917 1918 if (!mdev->device_up) { 1919 en_err(priv, "Cannot open - device down/disabled\n"); 1920 err = -EBUSY; 1921 goto out; 1922 } 1923 1924 /* Reset HW statistics and SW counters */ 1925 mlx4_en_clear_stats(dev); 1926 1927 err = mlx4_en_start_port(dev); 1928 if (err) 1929 en_err(priv, "Failed starting port:%d\n", priv->port); 1930 1931 out: 1932 mutex_unlock(&mdev->state_lock); 1933 return err; 1934 } 1935 1936 1937 static int mlx4_en_close(struct net_device *dev) 1938 { 1939 struct mlx4_en_priv *priv = netdev_priv(dev); 1940 struct mlx4_en_dev *mdev = priv->mdev; 1941 1942 en_dbg(IFDOWN, priv, "Close port called\n"); 1943 1944 mutex_lock(&mdev->state_lock); 1945 1946 mlx4_en_stop_port(dev, 0); 1947 netif_carrier_off(dev); 1948 1949 mutex_unlock(&mdev->state_lock); 1950 return 0; 1951 } 1952 1953 void mlx4_en_free_resources(struct mlx4_en_priv *priv) 1954 { 1955 int i; 1956 1957 #ifdef CONFIG_RFS_ACCEL 1958 priv->dev->rx_cpu_rmap = NULL; 1959 #endif 1960 1961 for (i = 0; i < priv->tx_ring_num; i++) { 1962 if (priv->tx_ring && priv->tx_ring[i]) 1963 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 1964 if (priv->tx_cq && priv->tx_cq[i]) 1965 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 1966 } 1967 1968 for (i = 0; i < priv->rx_ring_num; i++) { 1969 if (priv->rx_ring[i]) 1970 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 1971 priv->prof->rx_ring_size, priv->stride); 1972 if (priv->rx_cq[i]) 1973 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 1974 } 1975 1976 } 1977 1978 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 1979 { 1980 struct mlx4_en_port_profile *prof = priv->prof; 1981 int i; 1982 int node; 1983 1984 /* Create tx Rings */ 1985 for (i = 0; i < priv->tx_ring_num; i++) { 1986 node = cpu_to_node(i % num_online_cpus()); 1987 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 1988 prof->tx_ring_size, i, TX, node)) 1989 goto err; 1990 1991 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], 1992 prof->tx_ring_size, TXBB_SIZE, 1993 node, i)) 1994 goto err; 1995 } 1996 1997 /* Create rx Rings */ 1998 for (i = 0; i < priv->rx_ring_num; i++) { 1999 node = cpu_to_node(i % num_online_cpus()); 2000 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 2001 prof->rx_ring_size, i, RX, node)) 2002 goto err; 2003 2004 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 2005 prof->rx_ring_size, priv->stride, 2006 node)) 2007 goto err; 2008 } 2009 2010 #ifdef CONFIG_RFS_ACCEL 2011 priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port); 2012 #endif 2013 2014 return 0; 2015 2016 err: 2017 en_err(priv, "Failed to allocate NIC resources\n"); 2018 for (i = 0; i < priv->rx_ring_num; i++) { 2019 if (priv->rx_ring[i]) 2020 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2021 prof->rx_ring_size, 2022 priv->stride); 2023 if (priv->rx_cq[i]) 2024 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2025 } 2026 for (i = 0; i < priv->tx_ring_num; i++) { 2027 if (priv->tx_ring[i]) 2028 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2029 if (priv->tx_cq[i]) 2030 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2031 } 2032 return -ENOMEM; 2033 } 2034 2035 2036 void mlx4_en_destroy_netdev(struct net_device *dev) 2037 { 2038 struct mlx4_en_priv *priv = netdev_priv(dev); 2039 struct mlx4_en_dev *mdev = priv->mdev; 2040 2041 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2042 2043 /* Unregister device - this will close the port if it was up */ 2044 if (priv->registered) { 2045 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev, 2046 priv->port)); 2047 unregister_netdev(dev); 2048 } 2049 2050 if (priv->allocated) 2051 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2052 2053 cancel_delayed_work(&priv->stats_task); 2054 cancel_delayed_work(&priv->service_task); 2055 /* flush any pending task for this netdev */ 2056 flush_workqueue(mdev->workqueue); 2057 2058 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2059 mlx4_en_remove_timestamp(mdev); 2060 2061 /* Detach the netdev so tasks would not attempt to access it */ 2062 mutex_lock(&mdev->state_lock); 2063 mdev->pndev[priv->port] = NULL; 2064 mdev->upper[priv->port] = NULL; 2065 mutex_unlock(&mdev->state_lock); 2066 2067 mlx4_en_free_resources(priv); 2068 2069 kfree(priv->tx_ring); 2070 kfree(priv->tx_cq); 2071 2072 free_netdev(dev); 2073 } 2074 2075 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2076 { 2077 struct mlx4_en_priv *priv = netdev_priv(dev); 2078 struct mlx4_en_dev *mdev = priv->mdev; 2079 int err = 0; 2080 2081 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2082 dev->mtu, new_mtu); 2083 2084 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 2085 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 2086 return -EPERM; 2087 } 2088 dev->mtu = new_mtu; 2089 2090 if (netif_running(dev)) { 2091 mutex_lock(&mdev->state_lock); 2092 if (!mdev->device_up) { 2093 /* NIC is probably restarting - let watchdog task reset 2094 * the port */ 2095 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2096 } else { 2097 mlx4_en_stop_port(dev, 1); 2098 err = mlx4_en_start_port(dev); 2099 if (err) { 2100 en_err(priv, "Failed restarting port:%d\n", 2101 priv->port); 2102 queue_work(mdev->workqueue, &priv->watchdog_task); 2103 } 2104 } 2105 mutex_unlock(&mdev->state_lock); 2106 } 2107 return 0; 2108 } 2109 2110 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2111 { 2112 struct mlx4_en_priv *priv = netdev_priv(dev); 2113 struct mlx4_en_dev *mdev = priv->mdev; 2114 struct hwtstamp_config config; 2115 2116 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2117 return -EFAULT; 2118 2119 /* reserved for future extensions */ 2120 if (config.flags) 2121 return -EINVAL; 2122 2123 /* device doesn't support time stamping */ 2124 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2125 return -EINVAL; 2126 2127 /* TX HW timestamp */ 2128 switch (config.tx_type) { 2129 case HWTSTAMP_TX_OFF: 2130 case HWTSTAMP_TX_ON: 2131 break; 2132 default: 2133 return -ERANGE; 2134 } 2135 2136 /* RX HW timestamp */ 2137 switch (config.rx_filter) { 2138 case HWTSTAMP_FILTER_NONE: 2139 break; 2140 case HWTSTAMP_FILTER_ALL: 2141 case HWTSTAMP_FILTER_SOME: 2142 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2143 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2144 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2145 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2146 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2147 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2148 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2149 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2150 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2151 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2152 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2153 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2154 config.rx_filter = HWTSTAMP_FILTER_ALL; 2155 break; 2156 default: 2157 return -ERANGE; 2158 } 2159 2160 if (mlx4_en_reset_config(dev, config, dev->features)) { 2161 config.tx_type = HWTSTAMP_TX_OFF; 2162 config.rx_filter = HWTSTAMP_FILTER_NONE; 2163 } 2164 2165 return copy_to_user(ifr->ifr_data, &config, 2166 sizeof(config)) ? -EFAULT : 0; 2167 } 2168 2169 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2170 { 2171 struct mlx4_en_priv *priv = netdev_priv(dev); 2172 2173 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2174 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2175 } 2176 2177 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2178 { 2179 switch (cmd) { 2180 case SIOCSHWTSTAMP: 2181 return mlx4_en_hwtstamp_set(dev, ifr); 2182 case SIOCGHWTSTAMP: 2183 return mlx4_en_hwtstamp_get(dev, ifr); 2184 default: 2185 return -EOPNOTSUPP; 2186 } 2187 } 2188 2189 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev, 2190 netdev_features_t features) 2191 { 2192 struct mlx4_en_priv *en_priv = netdev_priv(netdev); 2193 struct mlx4_en_dev *mdev = en_priv->mdev; 2194 2195 /* Since there is no support for separate RX C-TAG/S-TAG vlan accel 2196 * enable/disable make sure S-TAG flag is always in same state as 2197 * C-TAG. 2198 */ 2199 if (features & NETIF_F_HW_VLAN_CTAG_RX && 2200 !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 2201 features |= NETIF_F_HW_VLAN_STAG_RX; 2202 else 2203 features &= ~NETIF_F_HW_VLAN_STAG_RX; 2204 2205 return features; 2206 } 2207 2208 static int mlx4_en_set_features(struct net_device *netdev, 2209 netdev_features_t features) 2210 { 2211 struct mlx4_en_priv *priv = netdev_priv(netdev); 2212 bool reset = false; 2213 int ret = 0; 2214 2215 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) { 2216 en_info(priv, "Turn %s RX-FCS\n", 2217 (features & NETIF_F_RXFCS) ? "ON" : "OFF"); 2218 reset = true; 2219 } 2220 2221 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) { 2222 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0; 2223 2224 en_info(priv, "Turn %s RX-ALL\n", 2225 ignore_fcs_value ? "ON" : "OFF"); 2226 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev, 2227 priv->port, ignore_fcs_value); 2228 if (ret) 2229 return ret; 2230 } 2231 2232 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 2233 en_info(priv, "Turn %s RX vlan strip offload\n", 2234 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF"); 2235 reset = true; 2236 } 2237 2238 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX)) 2239 en_info(priv, "Turn %s TX vlan strip offload\n", 2240 (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF"); 2241 2242 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX)) 2243 en_info(priv, "Turn %s TX S-VLAN strip offload\n", 2244 (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF"); 2245 2246 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) { 2247 en_info(priv, "Turn %s loopback\n", 2248 (features & NETIF_F_LOOPBACK) ? "ON" : "OFF"); 2249 mlx4_en_update_loopback_state(netdev, features); 2250 } 2251 2252 if (reset) { 2253 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config, 2254 features); 2255 if (ret) 2256 return ret; 2257 } 2258 2259 return 0; 2260 } 2261 2262 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2263 { 2264 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2265 struct mlx4_en_dev *mdev = en_priv->mdev; 2266 u64 mac_u64 = mlx4_mac_to_u64(mac); 2267 2268 if (is_multicast_ether_addr(mac)) 2269 return -EINVAL; 2270 2271 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2272 } 2273 2274 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) 2275 { 2276 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2277 struct mlx4_en_dev *mdev = en_priv->mdev; 2278 2279 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos); 2280 } 2281 2282 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, 2283 int max_tx_rate) 2284 { 2285 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2286 struct mlx4_en_dev *mdev = en_priv->mdev; 2287 2288 return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate, 2289 max_tx_rate); 2290 } 2291 2292 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2293 { 2294 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2295 struct mlx4_en_dev *mdev = en_priv->mdev; 2296 2297 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2298 } 2299 2300 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2301 { 2302 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2303 struct mlx4_en_dev *mdev = en_priv->mdev; 2304 2305 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2306 } 2307 2308 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2309 { 2310 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2311 struct mlx4_en_dev *mdev = en_priv->mdev; 2312 2313 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2314 } 2315 2316 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf, 2317 struct ifla_vf_stats *vf_stats) 2318 { 2319 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2320 struct mlx4_en_dev *mdev = en_priv->mdev; 2321 2322 return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats); 2323 } 2324 2325 #define PORT_ID_BYTE_LEN 8 2326 static int mlx4_en_get_phys_port_id(struct net_device *dev, 2327 struct netdev_phys_item_id *ppid) 2328 { 2329 struct mlx4_en_priv *priv = netdev_priv(dev); 2330 struct mlx4_dev *mdev = priv->mdev->dev; 2331 int i; 2332 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2333 2334 if (!phys_port_id) 2335 return -EOPNOTSUPP; 2336 2337 ppid->id_len = sizeof(phys_port_id); 2338 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2339 ppid->id[i] = phys_port_id & 0xff; 2340 phys_port_id >>= 8; 2341 } 2342 return 0; 2343 } 2344 2345 #ifdef CONFIG_MLX4_EN_VXLAN 2346 static void mlx4_en_add_vxlan_offloads(struct work_struct *work) 2347 { 2348 int ret; 2349 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2350 vxlan_add_task); 2351 2352 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port); 2353 if (ret) 2354 goto out; 2355 2356 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2357 VXLAN_STEER_BY_OUTER_MAC, 1); 2358 out: 2359 if (ret) { 2360 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2361 return; 2362 } 2363 2364 /* set offloads */ 2365 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 2366 NETIF_F_RXCSUM | 2367 NETIF_F_TSO | NETIF_F_TSO6 | 2368 NETIF_F_GSO_UDP_TUNNEL | 2369 NETIF_F_GSO_UDP_TUNNEL_CSUM | 2370 NETIF_F_GSO_PARTIAL; 2371 } 2372 2373 static void mlx4_en_del_vxlan_offloads(struct work_struct *work) 2374 { 2375 int ret; 2376 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2377 vxlan_del_task); 2378 /* unset offloads */ 2379 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 2380 NETIF_F_RXCSUM | 2381 NETIF_F_TSO | NETIF_F_TSO6 | 2382 NETIF_F_GSO_UDP_TUNNEL | 2383 NETIF_F_GSO_UDP_TUNNEL_CSUM | 2384 NETIF_F_GSO_PARTIAL); 2385 2386 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2387 VXLAN_STEER_BY_OUTER_MAC, 0); 2388 if (ret) 2389 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2390 2391 priv->vxlan_port = 0; 2392 } 2393 2394 static void mlx4_en_add_vxlan_port(struct net_device *dev, 2395 sa_family_t sa_family, __be16 port) 2396 { 2397 struct mlx4_en_priv *priv = netdev_priv(dev); 2398 __be16 current_port; 2399 2400 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2401 return; 2402 2403 if (sa_family == AF_INET6) 2404 return; 2405 2406 current_port = priv->vxlan_port; 2407 if (current_port && current_port != port) { 2408 en_warn(priv, "vxlan port %d configured, can't add port %d\n", 2409 ntohs(current_port), ntohs(port)); 2410 return; 2411 } 2412 2413 priv->vxlan_port = port; 2414 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task); 2415 } 2416 2417 static void mlx4_en_del_vxlan_port(struct net_device *dev, 2418 sa_family_t sa_family, __be16 port) 2419 { 2420 struct mlx4_en_priv *priv = netdev_priv(dev); 2421 __be16 current_port; 2422 2423 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2424 return; 2425 2426 if (sa_family == AF_INET6) 2427 return; 2428 2429 current_port = priv->vxlan_port; 2430 if (current_port != port) { 2431 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port)); 2432 return; 2433 } 2434 2435 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task); 2436 } 2437 2438 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb, 2439 struct net_device *dev, 2440 netdev_features_t features) 2441 { 2442 features = vlan_features_check(skb, features); 2443 features = vxlan_features_check(skb, features); 2444 2445 /* The ConnectX-3 doesn't support outer IPv6 checksums but it does 2446 * support inner IPv6 checksums and segmentation so we need to 2447 * strip that feature if this is an IPv6 encapsulated frame. 2448 */ 2449 if (skb->encapsulation && 2450 (skb->ip_summed == CHECKSUM_PARTIAL) && 2451 (ip_hdr(skb)->version != 4)) 2452 features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); 2453 2454 return features; 2455 } 2456 #endif 2457 2458 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate) 2459 { 2460 struct mlx4_en_priv *priv = netdev_priv(dev); 2461 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index]; 2462 struct mlx4_update_qp_params params; 2463 int err; 2464 2465 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT)) 2466 return -EOPNOTSUPP; 2467 2468 /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */ 2469 if (maxrate >> 12) { 2470 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS; 2471 params.rate_val = maxrate / 1000; 2472 } else if (maxrate) { 2473 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS; 2474 params.rate_val = maxrate; 2475 } else { /* zero serves to revoke the QP rate-limitation */ 2476 params.rate_unit = 0; 2477 params.rate_val = 0; 2478 } 2479 2480 err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT, 2481 ¶ms); 2482 return err; 2483 } 2484 2485 static const struct net_device_ops mlx4_netdev_ops = { 2486 .ndo_open = mlx4_en_open, 2487 .ndo_stop = mlx4_en_close, 2488 .ndo_start_xmit = mlx4_en_xmit, 2489 .ndo_select_queue = mlx4_en_select_queue, 2490 .ndo_get_stats64 = mlx4_en_get_stats64, 2491 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2492 .ndo_set_mac_address = mlx4_en_set_mac, 2493 .ndo_validate_addr = eth_validate_addr, 2494 .ndo_change_mtu = mlx4_en_change_mtu, 2495 .ndo_do_ioctl = mlx4_en_ioctl, 2496 .ndo_tx_timeout = mlx4_en_tx_timeout, 2497 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2498 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2499 #ifdef CONFIG_NET_POLL_CONTROLLER 2500 .ndo_poll_controller = mlx4_en_netpoll, 2501 #endif 2502 .ndo_set_features = mlx4_en_set_features, 2503 .ndo_fix_features = mlx4_en_fix_features, 2504 .ndo_setup_tc = __mlx4_en_setup_tc, 2505 #ifdef CONFIG_RFS_ACCEL 2506 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2507 #endif 2508 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2509 #ifdef CONFIG_MLX4_EN_VXLAN 2510 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2511 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2512 .ndo_features_check = mlx4_en_features_check, 2513 #endif 2514 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2515 }; 2516 2517 static const struct net_device_ops mlx4_netdev_ops_master = { 2518 .ndo_open = mlx4_en_open, 2519 .ndo_stop = mlx4_en_close, 2520 .ndo_start_xmit = mlx4_en_xmit, 2521 .ndo_select_queue = mlx4_en_select_queue, 2522 .ndo_get_stats64 = mlx4_en_get_stats64, 2523 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2524 .ndo_set_mac_address = mlx4_en_set_mac, 2525 .ndo_validate_addr = eth_validate_addr, 2526 .ndo_change_mtu = mlx4_en_change_mtu, 2527 .ndo_tx_timeout = mlx4_en_tx_timeout, 2528 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2529 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2530 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2531 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2532 .ndo_set_vf_rate = mlx4_en_set_vf_rate, 2533 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2534 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2535 .ndo_get_vf_stats = mlx4_en_get_vf_stats, 2536 .ndo_get_vf_config = mlx4_en_get_vf_config, 2537 #ifdef CONFIG_NET_POLL_CONTROLLER 2538 .ndo_poll_controller = mlx4_en_netpoll, 2539 #endif 2540 .ndo_set_features = mlx4_en_set_features, 2541 .ndo_fix_features = mlx4_en_fix_features, 2542 .ndo_setup_tc = __mlx4_en_setup_tc, 2543 #ifdef CONFIG_RFS_ACCEL 2544 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2545 #endif 2546 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2547 #ifdef CONFIG_MLX4_EN_VXLAN 2548 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2549 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2550 .ndo_features_check = mlx4_en_features_check, 2551 #endif 2552 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2553 }; 2554 2555 struct mlx4_en_bond { 2556 struct work_struct work; 2557 struct mlx4_en_priv *priv; 2558 int is_bonded; 2559 struct mlx4_port_map port_map; 2560 }; 2561 2562 static void mlx4_en_bond_work(struct work_struct *work) 2563 { 2564 struct mlx4_en_bond *bond = container_of(work, 2565 struct mlx4_en_bond, 2566 work); 2567 int err = 0; 2568 struct mlx4_dev *dev = bond->priv->mdev->dev; 2569 2570 if (bond->is_bonded) { 2571 if (!mlx4_is_bonded(dev)) { 2572 err = mlx4_bond(dev); 2573 if (err) 2574 en_err(bond->priv, "Fail to bond device\n"); 2575 } 2576 if (!err) { 2577 err = mlx4_port_map_set(dev, &bond->port_map); 2578 if (err) 2579 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n", 2580 bond->port_map.port1, 2581 bond->port_map.port2, 2582 err); 2583 } 2584 } else if (mlx4_is_bonded(dev)) { 2585 err = mlx4_unbond(dev); 2586 if (err) 2587 en_err(bond->priv, "Fail to unbond device\n"); 2588 } 2589 dev_put(bond->priv->dev); 2590 kfree(bond); 2591 } 2592 2593 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded, 2594 u8 v2p_p1, u8 v2p_p2) 2595 { 2596 struct mlx4_en_bond *bond = NULL; 2597 2598 bond = kzalloc(sizeof(*bond), GFP_ATOMIC); 2599 if (!bond) 2600 return -ENOMEM; 2601 2602 INIT_WORK(&bond->work, mlx4_en_bond_work); 2603 bond->priv = priv; 2604 bond->is_bonded = is_bonded; 2605 bond->port_map.port1 = v2p_p1; 2606 bond->port_map.port2 = v2p_p2; 2607 dev_hold(priv->dev); 2608 queue_work(priv->mdev->workqueue, &bond->work); 2609 return 0; 2610 } 2611 2612 int mlx4_en_netdev_event(struct notifier_block *this, 2613 unsigned long event, void *ptr) 2614 { 2615 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 2616 u8 port = 0; 2617 struct mlx4_en_dev *mdev; 2618 struct mlx4_dev *dev; 2619 int i, num_eth_ports = 0; 2620 bool do_bond = true; 2621 struct mlx4_en_priv *priv; 2622 u8 v2p_port1 = 0; 2623 u8 v2p_port2 = 0; 2624 2625 if (!net_eq(dev_net(ndev), &init_net)) 2626 return NOTIFY_DONE; 2627 2628 mdev = container_of(this, struct mlx4_en_dev, nb); 2629 dev = mdev->dev; 2630 2631 /* Go into this mode only when two network devices set on two ports 2632 * of the same mlx4 device are slaves of the same bonding master 2633 */ 2634 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { 2635 ++num_eth_ports; 2636 if (!port && (mdev->pndev[i] == ndev)) 2637 port = i; 2638 mdev->upper[i] = mdev->pndev[i] ? 2639 netdev_master_upper_dev_get(mdev->pndev[i]) : NULL; 2640 /* condition not met: network device is a slave */ 2641 if (!mdev->upper[i]) 2642 do_bond = false; 2643 if (num_eth_ports < 2) 2644 continue; 2645 /* condition not met: same master */ 2646 if (mdev->upper[i] != mdev->upper[i-1]) 2647 do_bond = false; 2648 } 2649 /* condition not met: 2 salves */ 2650 do_bond = (num_eth_ports == 2) ? do_bond : false; 2651 2652 /* handle only events that come with enough info */ 2653 if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port) 2654 return NOTIFY_DONE; 2655 2656 priv = netdev_priv(ndev); 2657 if (do_bond) { 2658 struct netdev_notifier_bonding_info *notifier_info = ptr; 2659 struct netdev_bonding_info *bonding_info = 2660 ¬ifier_info->bonding_info; 2661 2662 /* required mode 1, 2 or 4 */ 2663 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) && 2664 (bonding_info->master.bond_mode != BOND_MODE_XOR) && 2665 (bonding_info->master.bond_mode != BOND_MODE_8023AD)) 2666 do_bond = false; 2667 2668 /* require exactly 2 slaves */ 2669 if (bonding_info->master.num_slaves != 2) 2670 do_bond = false; 2671 2672 /* calc v2p */ 2673 if (do_bond) { 2674 if (bonding_info->master.bond_mode == 2675 BOND_MODE_ACTIVEBACKUP) { 2676 /* in active-backup mode virtual ports are 2677 * mapped to the physical port of the active 2678 * slave */ 2679 if (bonding_info->slave.state == 2680 BOND_STATE_BACKUP) { 2681 if (port == 1) { 2682 v2p_port1 = 2; 2683 v2p_port2 = 2; 2684 } else { 2685 v2p_port1 = 1; 2686 v2p_port2 = 1; 2687 } 2688 } else { /* BOND_STATE_ACTIVE */ 2689 if (port == 1) { 2690 v2p_port1 = 1; 2691 v2p_port2 = 1; 2692 } else { 2693 v2p_port1 = 2; 2694 v2p_port2 = 2; 2695 } 2696 } 2697 } else { /* Active-Active */ 2698 /* in active-active mode a virtual port is 2699 * mapped to the native physical port if and only 2700 * if the physical port is up */ 2701 __s8 link = bonding_info->slave.link; 2702 2703 if (port == 1) 2704 v2p_port2 = 2; 2705 else 2706 v2p_port1 = 1; 2707 if ((link == BOND_LINK_UP) || 2708 (link == BOND_LINK_FAIL)) { 2709 if (port == 1) 2710 v2p_port1 = 1; 2711 else 2712 v2p_port2 = 2; 2713 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */ 2714 if (port == 1) 2715 v2p_port1 = 2; 2716 else 2717 v2p_port2 = 1; 2718 } 2719 } 2720 } 2721 } 2722 2723 mlx4_en_queue_bond_work(priv, do_bond, 2724 v2p_port1, v2p_port2); 2725 2726 return NOTIFY_DONE; 2727 } 2728 2729 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev, 2730 struct mlx4_en_stats_bitmap *stats_bitmap, 2731 u8 rx_ppp, u8 rx_pause, 2732 u8 tx_ppp, u8 tx_pause) 2733 { 2734 int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS; 2735 2736 if (!mlx4_is_slave(dev) && 2737 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) { 2738 mutex_lock(&stats_bitmap->mutex); 2739 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS); 2740 2741 if (rx_ppp) 2742 bitmap_set(stats_bitmap->bitmap, last_i, 2743 NUM_FLOW_PRIORITY_STATS_RX); 2744 last_i += NUM_FLOW_PRIORITY_STATS_RX; 2745 2746 if (rx_pause && !(rx_ppp)) 2747 bitmap_set(stats_bitmap->bitmap, last_i, 2748 NUM_FLOW_STATS_RX); 2749 last_i += NUM_FLOW_STATS_RX; 2750 2751 if (tx_ppp) 2752 bitmap_set(stats_bitmap->bitmap, last_i, 2753 NUM_FLOW_PRIORITY_STATS_TX); 2754 last_i += NUM_FLOW_PRIORITY_STATS_TX; 2755 2756 if (tx_pause && !(tx_ppp)) 2757 bitmap_set(stats_bitmap->bitmap, last_i, 2758 NUM_FLOW_STATS_TX); 2759 last_i += NUM_FLOW_STATS_TX; 2760 2761 mutex_unlock(&stats_bitmap->mutex); 2762 } 2763 } 2764 2765 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev, 2766 struct mlx4_en_stats_bitmap *stats_bitmap, 2767 u8 rx_ppp, u8 rx_pause, 2768 u8 tx_ppp, u8 tx_pause) 2769 { 2770 int last_i = 0; 2771 2772 mutex_init(&stats_bitmap->mutex); 2773 bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS); 2774 2775 if (mlx4_is_slave(dev)) { 2776 bitmap_set(stats_bitmap->bitmap, last_i + 2777 MLX4_FIND_NETDEV_STAT(rx_packets), 1); 2778 bitmap_set(stats_bitmap->bitmap, last_i + 2779 MLX4_FIND_NETDEV_STAT(tx_packets), 1); 2780 bitmap_set(stats_bitmap->bitmap, last_i + 2781 MLX4_FIND_NETDEV_STAT(rx_bytes), 1); 2782 bitmap_set(stats_bitmap->bitmap, last_i + 2783 MLX4_FIND_NETDEV_STAT(tx_bytes), 1); 2784 bitmap_set(stats_bitmap->bitmap, last_i + 2785 MLX4_FIND_NETDEV_STAT(rx_dropped), 1); 2786 bitmap_set(stats_bitmap->bitmap, last_i + 2787 MLX4_FIND_NETDEV_STAT(tx_dropped), 1); 2788 } else { 2789 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS); 2790 } 2791 last_i += NUM_MAIN_STATS; 2792 2793 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS); 2794 last_i += NUM_PORT_STATS; 2795 2796 if (mlx4_is_master(dev)) 2797 bitmap_set(stats_bitmap->bitmap, last_i, 2798 NUM_PF_STATS); 2799 last_i += NUM_PF_STATS; 2800 2801 mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap, 2802 rx_ppp, rx_pause, 2803 tx_ppp, tx_pause); 2804 last_i += NUM_FLOW_STATS; 2805 2806 if (!mlx4_is_slave(dev)) 2807 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS); 2808 } 2809 2810 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 2811 struct mlx4_en_port_profile *prof) 2812 { 2813 struct net_device *dev; 2814 struct mlx4_en_priv *priv; 2815 int i; 2816 int err; 2817 2818 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 2819 MAX_TX_RINGS, MAX_RX_RINGS); 2820 if (dev == NULL) 2821 return -ENOMEM; 2822 2823 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 2824 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 2825 2826 SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev); 2827 dev->dev_port = port - 1; 2828 2829 /* 2830 * Initialize driver private data 2831 */ 2832 2833 priv = netdev_priv(dev); 2834 memset(priv, 0, sizeof(struct mlx4_en_priv)); 2835 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 2836 spin_lock_init(&priv->stats_lock); 2837 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 2838 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 2839 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 2840 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 2841 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 2842 #ifdef CONFIG_MLX4_EN_VXLAN 2843 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads); 2844 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads); 2845 #endif 2846 #ifdef CONFIG_RFS_ACCEL 2847 INIT_LIST_HEAD(&priv->filters); 2848 spin_lock_init(&priv->filters_lock); 2849 #endif 2850 2851 priv->dev = dev; 2852 priv->mdev = mdev; 2853 priv->ddev = &mdev->pdev->dev; 2854 priv->prof = prof; 2855 priv->port = port; 2856 priv->port_up = false; 2857 priv->flags = prof->flags; 2858 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME; 2859 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 2860 MLX4_WQE_CTRL_SOLICITED); 2861 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 2862 priv->tx_ring_num = prof->tx_ring_num; 2863 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK; 2864 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key)); 2865 2866 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 2867 GFP_KERNEL); 2868 if (!priv->tx_ring) { 2869 err = -ENOMEM; 2870 goto out; 2871 } 2872 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 2873 GFP_KERNEL); 2874 if (!priv->tx_cq) { 2875 err = -ENOMEM; 2876 goto out; 2877 } 2878 priv->rx_ring_num = prof->rx_ring_num; 2879 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 2880 priv->cqe_size = mdev->dev->caps.cqe_size; 2881 priv->mac_index = -1; 2882 priv->msg_enable = MLX4_EN_MSG_LEVEL; 2883 #ifdef CONFIG_MLX4_EN_DCB 2884 if (!mlx4_is_slave(priv->mdev->dev)) { 2885 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) { 2886 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 2887 } else { 2888 en_info(priv, "enabling only PFC DCB ops\n"); 2889 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 2890 } 2891 } 2892 #endif 2893 2894 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 2895 INIT_HLIST_HEAD(&priv->mac_hash[i]); 2896 2897 /* Query for default mac and max mtu */ 2898 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 2899 2900 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] & 2901 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP) 2902 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP; 2903 2904 /* Set default MAC */ 2905 dev->addr_len = ETH_ALEN; 2906 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 2907 if (!is_valid_ether_addr(dev->dev_addr)) { 2908 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 2909 priv->port, dev->dev_addr); 2910 err = -EINVAL; 2911 goto out; 2912 } else if (mlx4_is_slave(priv->mdev->dev) && 2913 (priv->mdev->dev->port_random_macs & 1 << priv->port)) { 2914 /* Random MAC was assigned in mlx4_slave_cap 2915 * in mlx4_core module 2916 */ 2917 dev->addr_assign_type |= NET_ADDR_RANDOM; 2918 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 2919 } 2920 2921 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac)); 2922 2923 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2924 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2925 err = mlx4_en_alloc_resources(priv); 2926 if (err) 2927 goto out; 2928 2929 /* Initialize time stamping config */ 2930 priv->hwtstamp_config.flags = 0; 2931 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 2932 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 2933 2934 /* Allocate page for receive rings */ 2935 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 2936 MLX4_EN_PAGE_SIZE); 2937 if (err) { 2938 en_err(priv, "Failed to allocate page for rx qps\n"); 2939 goto out; 2940 } 2941 priv->allocated = 1; 2942 2943 /* 2944 * Initialize netdev entry points 2945 */ 2946 if (mlx4_is_master(priv->mdev->dev)) 2947 dev->netdev_ops = &mlx4_netdev_ops_master; 2948 else 2949 dev->netdev_ops = &mlx4_netdev_ops; 2950 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 2951 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 2952 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 2953 2954 dev->ethtool_ops = &mlx4_en_ethtool_ops; 2955 2956 /* 2957 * Set driver features 2958 */ 2959 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2960 if (mdev->LSO_support) 2961 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2962 2963 dev->vlan_features = dev->hw_features; 2964 2965 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 2966 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 2967 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 2968 NETIF_F_HW_VLAN_CTAG_FILTER; 2969 dev->hw_features |= NETIF_F_LOOPBACK | 2970 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 2971 2972 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) { 2973 dev->features |= NETIF_F_HW_VLAN_STAG_RX | 2974 NETIF_F_HW_VLAN_STAG_FILTER; 2975 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX; 2976 } 2977 2978 if (mlx4_is_slave(mdev->dev)) { 2979 int phv; 2980 2981 err = get_phv_bit(mdev->dev, port, &phv); 2982 if (!err && phv) { 2983 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 2984 priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV; 2985 } 2986 } else { 2987 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN && 2988 !(mdev->dev->caps.flags2 & 2989 MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 2990 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 2991 } 2992 2993 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) 2994 dev->hw_features |= NETIF_F_RXFCS; 2995 2996 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS) 2997 dev->hw_features |= NETIF_F_RXALL; 2998 2999 if (mdev->dev->caps.steering_mode == 3000 MLX4_STEERING_MODE_DEVICE_MANAGED && 3001 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC) 3002 dev->hw_features |= NETIF_F_NTUPLE; 3003 3004 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 3005 dev->priv_flags |= IFF_UNICAST_FLT; 3006 3007 /* Setting a default hash function value */ 3008 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) { 3009 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 3010 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) { 3011 priv->rss_hash_fn = ETH_RSS_HASH_XOR; 3012 } else { 3013 en_warn(priv, 3014 "No RSS hash capabilities exposed, using Toeplitz\n"); 3015 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 3016 } 3017 3018 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 3019 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL | 3020 NETIF_F_GSO_UDP_TUNNEL_CSUM | 3021 NETIF_F_GSO_PARTIAL; 3022 dev->features |= NETIF_F_GSO_UDP_TUNNEL | 3023 NETIF_F_GSO_UDP_TUNNEL_CSUM | 3024 NETIF_F_GSO_PARTIAL; 3025 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM; 3026 } 3027 3028 mdev->pndev[port] = dev; 3029 mdev->upper[port] = NULL; 3030 3031 netif_carrier_off(dev); 3032 mlx4_en_set_default_moderation(priv); 3033 3034 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 3035 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 3036 3037 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 3038 3039 /* Configure port */ 3040 mlx4_en_calc_rx_buf(dev); 3041 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 3042 priv->rx_skb_size + ETH_FCS_LEN, 3043 prof->tx_pause, prof->tx_ppp, 3044 prof->rx_pause, prof->rx_ppp); 3045 if (err) { 3046 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 3047 priv->port, err); 3048 goto out; 3049 } 3050 3051 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 3052 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 3053 if (err) { 3054 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 3055 err); 3056 goto out; 3057 } 3058 } 3059 3060 /* Init port */ 3061 en_warn(priv, "Initializing port\n"); 3062 err = mlx4_INIT_PORT(mdev->dev, priv->port); 3063 if (err) { 3064 en_err(priv, "Failed Initializing port\n"); 3065 goto out; 3066 } 3067 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 3068 3069 /* Initialize time stamp mechanism */ 3070 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 3071 mlx4_en_init_timestamp(mdev); 3072 3073 queue_delayed_work(mdev->workqueue, &priv->service_task, 3074 SERVICE_TASK_DELAY); 3075 3076 mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap, 3077 mdev->profile.prof[priv->port].rx_ppp, 3078 mdev->profile.prof[priv->port].rx_pause, 3079 mdev->profile.prof[priv->port].tx_ppp, 3080 mdev->profile.prof[priv->port].tx_pause); 3081 3082 err = register_netdev(dev); 3083 if (err) { 3084 en_err(priv, "Netdev registration failed for port %d\n", port); 3085 goto out; 3086 } 3087 3088 priv->registered = 1; 3089 devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port), 3090 dev); 3091 3092 return 0; 3093 3094 out: 3095 mlx4_en_destroy_netdev(dev); 3096 return err; 3097 } 3098 3099 int mlx4_en_reset_config(struct net_device *dev, 3100 struct hwtstamp_config ts_config, 3101 netdev_features_t features) 3102 { 3103 struct mlx4_en_priv *priv = netdev_priv(dev); 3104 struct mlx4_en_dev *mdev = priv->mdev; 3105 int port_up = 0; 3106 int err = 0; 3107 3108 if (priv->hwtstamp_config.tx_type == ts_config.tx_type && 3109 priv->hwtstamp_config.rx_filter == ts_config.rx_filter && 3110 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3111 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) 3112 return 0; /* Nothing to change */ 3113 3114 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3115 (features & NETIF_F_HW_VLAN_CTAG_RX) && 3116 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) { 3117 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n"); 3118 return -EINVAL; 3119 } 3120 3121 mutex_lock(&mdev->state_lock); 3122 if (priv->port_up) { 3123 port_up = 1; 3124 mlx4_en_stop_port(dev, 1); 3125 } 3126 3127 mlx4_en_free_resources(priv); 3128 3129 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n", 3130 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX)); 3131 3132 priv->hwtstamp_config.tx_type = ts_config.tx_type; 3133 priv->hwtstamp_config.rx_filter = ts_config.rx_filter; 3134 3135 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 3136 if (features & NETIF_F_HW_VLAN_CTAG_RX) 3137 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3138 else 3139 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3140 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) { 3141 /* RX time-stamping is OFF, update the RX vlan offload 3142 * to the latest wanted state 3143 */ 3144 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX) 3145 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3146 else 3147 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3148 } 3149 3150 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) { 3151 if (features & NETIF_F_RXFCS) 3152 dev->features |= NETIF_F_RXFCS; 3153 else 3154 dev->features &= ~NETIF_F_RXFCS; 3155 } 3156 3157 /* RX vlan offload and RX time-stamping can't co-exist ! 3158 * Regardless of the caller's choice, 3159 * Turn Off RX vlan offload in case of time-stamping is ON 3160 */ 3161 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) { 3162 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 3163 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n"); 3164 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3165 } 3166 3167 err = mlx4_en_alloc_resources(priv); 3168 if (err) { 3169 en_err(priv, "Failed reallocating port resources\n"); 3170 goto out; 3171 } 3172 if (port_up) { 3173 err = mlx4_en_start_port(dev); 3174 if (err) 3175 en_err(priv, "Failed starting port\n"); 3176 } 3177 3178 out: 3179 mutex_unlock(&mdev->state_lock); 3180 netdev_features_change(dev); 3181 return err; 3182 } 3183