1 /* 2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 * 32 */ 33 34 #include <linux/etherdevice.h> 35 #include <linux/tcp.h> 36 #include <linux/if_vlan.h> 37 #include <linux/delay.h> 38 #include <linux/slab.h> 39 #include <linux/hash.h> 40 #include <net/ip.h> 41 #include <net/busy_poll.h> 42 #include <net/vxlan.h> 43 44 #include <linux/mlx4/driver.h> 45 #include <linux/mlx4/device.h> 46 #include <linux/mlx4/cmd.h> 47 #include <linux/mlx4/cq.h> 48 49 #include "mlx4_en.h" 50 #include "en_port.h" 51 52 int mlx4_en_setup_tc(struct net_device *dev, u8 up) 53 { 54 struct mlx4_en_priv *priv = netdev_priv(dev); 55 int i; 56 unsigned int offset = 0; 57 58 if (up && up != MLX4_EN_NUM_UP) 59 return -EINVAL; 60 61 netdev_set_num_tc(dev, up); 62 63 /* Partition Tx queues evenly amongst UP's */ 64 for (i = 0; i < up; i++) { 65 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset); 66 offset += priv->num_tx_rings_p_up; 67 } 68 69 return 0; 70 } 71 72 #ifdef CONFIG_RFS_ACCEL 73 74 struct mlx4_en_filter { 75 struct list_head next; 76 struct work_struct work; 77 78 u8 ip_proto; 79 __be32 src_ip; 80 __be32 dst_ip; 81 __be16 src_port; 82 __be16 dst_port; 83 84 int rxq_index; 85 struct mlx4_en_priv *priv; 86 u32 flow_id; /* RFS infrastructure id */ 87 int id; /* mlx4_en driver id */ 88 u64 reg_id; /* Flow steering API id */ 89 u8 activated; /* Used to prevent expiry before filter 90 * is attached 91 */ 92 struct hlist_node filter_chain; 93 }; 94 95 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv); 96 97 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto) 98 { 99 switch (ip_proto) { 100 case IPPROTO_UDP: 101 return MLX4_NET_TRANS_RULE_ID_UDP; 102 case IPPROTO_TCP: 103 return MLX4_NET_TRANS_RULE_ID_TCP; 104 default: 105 return MLX4_NET_TRANS_RULE_NUM; 106 } 107 }; 108 109 static void mlx4_en_filter_work(struct work_struct *work) 110 { 111 struct mlx4_en_filter *filter = container_of(work, 112 struct mlx4_en_filter, 113 work); 114 struct mlx4_en_priv *priv = filter->priv; 115 struct mlx4_spec_list spec_tcp_udp = { 116 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto), 117 { 118 .tcp_udp = { 119 .dst_port = filter->dst_port, 120 .dst_port_msk = (__force __be16)-1, 121 .src_port = filter->src_port, 122 .src_port_msk = (__force __be16)-1, 123 }, 124 }, 125 }; 126 struct mlx4_spec_list spec_ip = { 127 .id = MLX4_NET_TRANS_RULE_ID_IPV4, 128 { 129 .ipv4 = { 130 .dst_ip = filter->dst_ip, 131 .dst_ip_msk = (__force __be32)-1, 132 .src_ip = filter->src_ip, 133 .src_ip_msk = (__force __be32)-1, 134 }, 135 }, 136 }; 137 struct mlx4_spec_list spec_eth = { 138 .id = MLX4_NET_TRANS_RULE_ID_ETH, 139 }; 140 struct mlx4_net_trans_rule rule = { 141 .list = LIST_HEAD_INIT(rule.list), 142 .queue_mode = MLX4_NET_TRANS_Q_LIFO, 143 .exclusive = 1, 144 .allow_loopback = 1, 145 .promisc_mode = MLX4_FS_REGULAR, 146 .port = priv->port, 147 .priority = MLX4_DOMAIN_RFS, 148 }; 149 int rc; 150 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 151 152 if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) { 153 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n", 154 filter->ip_proto); 155 goto ignore; 156 } 157 list_add_tail(&spec_eth.list, &rule.list); 158 list_add_tail(&spec_ip.list, &rule.list); 159 list_add_tail(&spec_tcp_udp.list, &rule.list); 160 161 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn; 162 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN); 163 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 164 165 filter->activated = 0; 166 167 if (filter->reg_id) { 168 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 169 if (rc && rc != -ENOENT) 170 en_err(priv, "Error detaching flow. rc = %d\n", rc); 171 } 172 173 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id); 174 if (rc) 175 en_err(priv, "Error attaching flow. err = %d\n", rc); 176 177 ignore: 178 mlx4_en_filter_rfs_expire(priv); 179 180 filter->activated = 1; 181 } 182 183 static inline struct hlist_head * 184 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 185 __be16 src_port, __be16 dst_port) 186 { 187 unsigned long l; 188 int bucket_idx; 189 190 l = (__force unsigned long)src_port | 191 ((__force unsigned long)dst_port << 2); 192 l ^= (__force unsigned long)(src_ip ^ dst_ip); 193 194 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT); 195 196 return &priv->filter_hash[bucket_idx]; 197 } 198 199 static struct mlx4_en_filter * 200 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip, 201 __be32 dst_ip, u8 ip_proto, __be16 src_port, 202 __be16 dst_port, u32 flow_id) 203 { 204 struct mlx4_en_filter *filter = NULL; 205 206 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC); 207 if (!filter) 208 return NULL; 209 210 filter->priv = priv; 211 filter->rxq_index = rxq_index; 212 INIT_WORK(&filter->work, mlx4_en_filter_work); 213 214 filter->src_ip = src_ip; 215 filter->dst_ip = dst_ip; 216 filter->ip_proto = ip_proto; 217 filter->src_port = src_port; 218 filter->dst_port = dst_port; 219 220 filter->flow_id = flow_id; 221 222 filter->id = priv->last_filter_id++ % RPS_NO_FILTER; 223 224 list_add_tail(&filter->next, &priv->filters); 225 hlist_add_head(&filter->filter_chain, 226 filter_hash_bucket(priv, src_ip, dst_ip, src_port, 227 dst_port)); 228 229 return filter; 230 } 231 232 static void mlx4_en_filter_free(struct mlx4_en_filter *filter) 233 { 234 struct mlx4_en_priv *priv = filter->priv; 235 int rc; 236 237 list_del(&filter->next); 238 239 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 240 if (rc && rc != -ENOENT) 241 en_err(priv, "Error detaching flow. rc = %d\n", rc); 242 243 kfree(filter); 244 } 245 246 static inline struct mlx4_en_filter * 247 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 248 u8 ip_proto, __be16 src_port, __be16 dst_port) 249 { 250 struct mlx4_en_filter *filter; 251 struct mlx4_en_filter *ret = NULL; 252 253 hlist_for_each_entry(filter, 254 filter_hash_bucket(priv, src_ip, dst_ip, 255 src_port, dst_port), 256 filter_chain) { 257 if (filter->src_ip == src_ip && 258 filter->dst_ip == dst_ip && 259 filter->ip_proto == ip_proto && 260 filter->src_port == src_port && 261 filter->dst_port == dst_port) { 262 ret = filter; 263 break; 264 } 265 } 266 267 return ret; 268 } 269 270 static int 271 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 272 u16 rxq_index, u32 flow_id) 273 { 274 struct mlx4_en_priv *priv = netdev_priv(net_dev); 275 struct mlx4_en_filter *filter; 276 const struct iphdr *ip; 277 const __be16 *ports; 278 u8 ip_proto; 279 __be32 src_ip; 280 __be32 dst_ip; 281 __be16 src_port; 282 __be16 dst_port; 283 int nhoff = skb_network_offset(skb); 284 int ret = 0; 285 286 if (skb->protocol != htons(ETH_P_IP)) 287 return -EPROTONOSUPPORT; 288 289 ip = (const struct iphdr *)(skb->data + nhoff); 290 if (ip_is_fragment(ip)) 291 return -EPROTONOSUPPORT; 292 293 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP)) 294 return -EPROTONOSUPPORT; 295 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); 296 297 ip_proto = ip->protocol; 298 src_ip = ip->saddr; 299 dst_ip = ip->daddr; 300 src_port = ports[0]; 301 dst_port = ports[1]; 302 303 spin_lock_bh(&priv->filters_lock); 304 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto, 305 src_port, dst_port); 306 if (filter) { 307 if (filter->rxq_index == rxq_index) 308 goto out; 309 310 filter->rxq_index = rxq_index; 311 } else { 312 filter = mlx4_en_filter_alloc(priv, rxq_index, 313 src_ip, dst_ip, ip_proto, 314 src_port, dst_port, flow_id); 315 if (!filter) { 316 ret = -ENOMEM; 317 goto err; 318 } 319 } 320 321 queue_work(priv->mdev->workqueue, &filter->work); 322 323 out: 324 ret = filter->id; 325 err: 326 spin_unlock_bh(&priv->filters_lock); 327 328 return ret; 329 } 330 331 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv) 332 { 333 struct mlx4_en_filter *filter, *tmp; 334 LIST_HEAD(del_list); 335 336 spin_lock_bh(&priv->filters_lock); 337 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 338 list_move(&filter->next, &del_list); 339 hlist_del(&filter->filter_chain); 340 } 341 spin_unlock_bh(&priv->filters_lock); 342 343 list_for_each_entry_safe(filter, tmp, &del_list, next) { 344 cancel_work_sync(&filter->work); 345 mlx4_en_filter_free(filter); 346 } 347 } 348 349 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv) 350 { 351 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL; 352 LIST_HEAD(del_list); 353 int i = 0; 354 355 spin_lock_bh(&priv->filters_lock); 356 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 357 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA) 358 break; 359 360 if (filter->activated && 361 !work_pending(&filter->work) && 362 rps_may_expire_flow(priv->dev, 363 filter->rxq_index, filter->flow_id, 364 filter->id)) { 365 list_move(&filter->next, &del_list); 366 hlist_del(&filter->filter_chain); 367 } else 368 last_filter = filter; 369 370 i++; 371 } 372 373 if (last_filter && (&last_filter->next != priv->filters.next)) 374 list_move(&priv->filters, &last_filter->next); 375 376 spin_unlock_bh(&priv->filters_lock); 377 378 list_for_each_entry_safe(filter, tmp, &del_list, next) 379 mlx4_en_filter_free(filter); 380 } 381 #endif 382 383 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev, 384 __be16 proto, u16 vid) 385 { 386 struct mlx4_en_priv *priv = netdev_priv(dev); 387 struct mlx4_en_dev *mdev = priv->mdev; 388 int err; 389 int idx; 390 391 en_dbg(HW, priv, "adding VLAN:%d\n", vid); 392 393 set_bit(vid, priv->active_vlans); 394 395 /* Add VID to port VLAN filter */ 396 mutex_lock(&mdev->state_lock); 397 if (mdev->device_up && priv->port_up) { 398 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 399 if (err) 400 en_err(priv, "Failed configuring VLAN filter\n"); 401 } 402 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx)) 403 en_dbg(HW, priv, "failed adding vlan %d\n", vid); 404 mutex_unlock(&mdev->state_lock); 405 406 return 0; 407 } 408 409 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, 410 __be16 proto, u16 vid) 411 { 412 struct mlx4_en_priv *priv = netdev_priv(dev); 413 struct mlx4_en_dev *mdev = priv->mdev; 414 int err; 415 416 en_dbg(HW, priv, "Killing VID:%d\n", vid); 417 418 clear_bit(vid, priv->active_vlans); 419 420 /* Remove VID from port VLAN filter */ 421 mutex_lock(&mdev->state_lock); 422 mlx4_unregister_vlan(mdev->dev, priv->port, vid); 423 424 if (mdev->device_up && priv->port_up) { 425 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 426 if (err) 427 en_err(priv, "Failed configuring VLAN filter\n"); 428 } 429 mutex_unlock(&mdev->state_lock); 430 431 return 0; 432 } 433 434 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) 435 { 436 int i; 437 for (i = ETH_ALEN - 1; i >= 0; --i) { 438 dst_mac[i] = src_mac & 0xff; 439 src_mac >>= 8; 440 } 441 memset(&dst_mac[ETH_ALEN], 0, 2); 442 } 443 444 445 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr, 446 int qpn, u64 *reg_id) 447 { 448 int err; 449 450 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 451 priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 452 return 0; /* do nothing */ 453 454 err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn, 455 MLX4_DOMAIN_NIC, reg_id); 456 if (err) { 457 en_err(priv, "failed to add vxlan steering rule, err %d\n", err); 458 return err; 459 } 460 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id); 461 return 0; 462 } 463 464 465 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv, 466 unsigned char *mac, int *qpn, u64 *reg_id) 467 { 468 struct mlx4_en_dev *mdev = priv->mdev; 469 struct mlx4_dev *dev = mdev->dev; 470 int err; 471 472 switch (dev->caps.steering_mode) { 473 case MLX4_STEERING_MODE_B0: { 474 struct mlx4_qp qp; 475 u8 gid[16] = {0}; 476 477 qp.qpn = *qpn; 478 memcpy(&gid[10], mac, ETH_ALEN); 479 gid[5] = priv->port; 480 481 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH); 482 break; 483 } 484 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 485 struct mlx4_spec_list spec_eth = { {NULL} }; 486 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 487 488 struct mlx4_net_trans_rule rule = { 489 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 490 .exclusive = 0, 491 .allow_loopback = 1, 492 .promisc_mode = MLX4_FS_REGULAR, 493 .priority = MLX4_DOMAIN_NIC, 494 }; 495 496 rule.port = priv->port; 497 rule.qpn = *qpn; 498 INIT_LIST_HEAD(&rule.list); 499 500 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH; 501 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN); 502 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 503 list_add_tail(&spec_eth.list, &rule.list); 504 505 err = mlx4_flow_attach(dev, &rule, reg_id); 506 break; 507 } 508 default: 509 return -EINVAL; 510 } 511 if (err) 512 en_warn(priv, "Failed Attaching Unicast\n"); 513 514 return err; 515 } 516 517 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv, 518 unsigned char *mac, int qpn, u64 reg_id) 519 { 520 struct mlx4_en_dev *mdev = priv->mdev; 521 struct mlx4_dev *dev = mdev->dev; 522 523 switch (dev->caps.steering_mode) { 524 case MLX4_STEERING_MODE_B0: { 525 struct mlx4_qp qp; 526 u8 gid[16] = {0}; 527 528 qp.qpn = qpn; 529 memcpy(&gid[10], mac, ETH_ALEN); 530 gid[5] = priv->port; 531 532 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH); 533 break; 534 } 535 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 536 mlx4_flow_detach(dev, reg_id); 537 break; 538 } 539 default: 540 en_err(priv, "Invalid steering mode.\n"); 541 } 542 } 543 544 static int mlx4_en_get_qp(struct mlx4_en_priv *priv) 545 { 546 struct mlx4_en_dev *mdev = priv->mdev; 547 struct mlx4_dev *dev = mdev->dev; 548 int index = 0; 549 int err = 0; 550 int *qpn = &priv->base_qpn; 551 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 552 553 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n", 554 priv->dev->dev_addr); 555 index = mlx4_register_mac(dev, priv->port, mac); 556 if (index < 0) { 557 err = index; 558 en_err(priv, "Failed adding MAC: %pM\n", 559 priv->dev->dev_addr); 560 return err; 561 } 562 563 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 564 int base_qpn = mlx4_get_base_qpn(dev, priv->port); 565 *qpn = base_qpn + index; 566 return 0; 567 } 568 569 err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP); 570 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); 571 if (err) { 572 en_err(priv, "Failed to reserve qp for mac registration\n"); 573 mlx4_unregister_mac(dev, priv->port, mac); 574 return err; 575 } 576 577 return 0; 578 } 579 580 static void mlx4_en_put_qp(struct mlx4_en_priv *priv) 581 { 582 struct mlx4_en_dev *mdev = priv->mdev; 583 struct mlx4_dev *dev = mdev->dev; 584 int qpn = priv->base_qpn; 585 586 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 587 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 588 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 589 priv->dev->dev_addr); 590 mlx4_unregister_mac(dev, priv->port, mac); 591 } else { 592 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", 593 priv->port, qpn); 594 mlx4_qp_release_range(dev, qpn, 1); 595 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 596 } 597 } 598 599 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, 600 unsigned char *new_mac, unsigned char *prev_mac) 601 { 602 struct mlx4_en_dev *mdev = priv->mdev; 603 struct mlx4_dev *dev = mdev->dev; 604 int err = 0; 605 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac); 606 607 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { 608 struct hlist_head *bucket; 609 unsigned int mac_hash; 610 struct mlx4_mac_entry *entry; 611 struct hlist_node *tmp; 612 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac); 613 614 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; 615 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 616 if (ether_addr_equal_64bits(entry->mac, prev_mac)) { 617 mlx4_en_uc_steer_release(priv, entry->mac, 618 qpn, entry->reg_id); 619 mlx4_unregister_mac(dev, priv->port, 620 prev_mac_u64); 621 hlist_del_rcu(&entry->hlist); 622 synchronize_rcu(); 623 memcpy(entry->mac, new_mac, ETH_ALEN); 624 entry->reg_id = 0; 625 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; 626 hlist_add_head_rcu(&entry->hlist, 627 &priv->mac_hash[mac_hash]); 628 mlx4_register_mac(dev, priv->port, new_mac_u64); 629 err = mlx4_en_uc_steer_add(priv, new_mac, 630 &qpn, 631 &entry->reg_id); 632 if (err) 633 return err; 634 if (priv->tunnel_reg_id) { 635 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 636 priv->tunnel_reg_id = 0; 637 } 638 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn, 639 &priv->tunnel_reg_id); 640 return err; 641 } 642 } 643 return -EINVAL; 644 } 645 646 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); 647 } 648 649 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv, 650 unsigned char new_mac[ETH_ALEN + 2]) 651 { 652 int err = 0; 653 654 if (priv->port_up) { 655 /* Remove old MAC and insert the new one */ 656 err = mlx4_en_replace_mac(priv, priv->base_qpn, 657 new_mac, priv->current_mac); 658 if (err) 659 en_err(priv, "Failed changing HW MAC address\n"); 660 } else 661 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); 662 663 if (!err) 664 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac)); 665 666 return err; 667 } 668 669 static int mlx4_en_set_mac(struct net_device *dev, void *addr) 670 { 671 struct mlx4_en_priv *priv = netdev_priv(dev); 672 struct mlx4_en_dev *mdev = priv->mdev; 673 struct sockaddr *saddr = addr; 674 unsigned char new_mac[ETH_ALEN + 2]; 675 int err; 676 677 if (!is_valid_ether_addr(saddr->sa_data)) 678 return -EADDRNOTAVAIL; 679 680 mutex_lock(&mdev->state_lock); 681 memcpy(new_mac, saddr->sa_data, ETH_ALEN); 682 err = mlx4_en_do_set_mac(priv, new_mac); 683 if (!err) 684 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); 685 mutex_unlock(&mdev->state_lock); 686 687 return err; 688 } 689 690 static void mlx4_en_clear_list(struct net_device *dev) 691 { 692 struct mlx4_en_priv *priv = netdev_priv(dev); 693 struct mlx4_en_mc_list *tmp, *mc_to_del; 694 695 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { 696 list_del(&mc_to_del->list); 697 kfree(mc_to_del); 698 } 699 } 700 701 static void mlx4_en_cache_mclist(struct net_device *dev) 702 { 703 struct mlx4_en_priv *priv = netdev_priv(dev); 704 struct netdev_hw_addr *ha; 705 struct mlx4_en_mc_list *tmp; 706 707 mlx4_en_clear_list(dev); 708 netdev_for_each_mc_addr(ha, dev) { 709 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); 710 if (!tmp) { 711 mlx4_en_clear_list(dev); 712 return; 713 } 714 memcpy(tmp->addr, ha->addr, ETH_ALEN); 715 list_add_tail(&tmp->list, &priv->mc_list); 716 } 717 } 718 719 static void update_mclist_flags(struct mlx4_en_priv *priv, 720 struct list_head *dst, 721 struct list_head *src) 722 { 723 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; 724 bool found; 725 726 /* Find all the entries that should be removed from dst, 727 * These are the entries that are not found in src 728 */ 729 list_for_each_entry(dst_tmp, dst, list) { 730 found = false; 731 list_for_each_entry(src_tmp, src, list) { 732 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 733 found = true; 734 break; 735 } 736 } 737 if (!found) 738 dst_tmp->action = MCLIST_REM; 739 } 740 741 /* Add entries that exist in src but not in dst 742 * mark them as need to add 743 */ 744 list_for_each_entry(src_tmp, src, list) { 745 found = false; 746 list_for_each_entry(dst_tmp, dst, list) { 747 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 748 dst_tmp->action = MCLIST_NONE; 749 found = true; 750 break; 751 } 752 } 753 if (!found) { 754 new_mc = kmemdup(src_tmp, 755 sizeof(struct mlx4_en_mc_list), 756 GFP_KERNEL); 757 if (!new_mc) 758 return; 759 760 new_mc->action = MCLIST_ADD; 761 list_add_tail(&new_mc->list, dst); 762 } 763 } 764 } 765 766 static void mlx4_en_set_rx_mode(struct net_device *dev) 767 { 768 struct mlx4_en_priv *priv = netdev_priv(dev); 769 770 if (!priv->port_up) 771 return; 772 773 queue_work(priv->mdev->workqueue, &priv->rx_mode_task); 774 } 775 776 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, 777 struct mlx4_en_dev *mdev) 778 { 779 int err = 0; 780 781 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { 782 if (netif_msg_rx_status(priv)) 783 en_warn(priv, "Entering promiscuous mode\n"); 784 priv->flags |= MLX4_EN_FLAG_PROMISC; 785 786 /* Enable promiscouos mode */ 787 switch (mdev->dev->caps.steering_mode) { 788 case MLX4_STEERING_MODE_DEVICE_MANAGED: 789 err = mlx4_flow_steer_promisc_add(mdev->dev, 790 priv->port, 791 priv->base_qpn, 792 MLX4_FS_ALL_DEFAULT); 793 if (err) 794 en_err(priv, "Failed enabling promiscuous mode\n"); 795 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 796 break; 797 798 case MLX4_STEERING_MODE_B0: 799 err = mlx4_unicast_promisc_add(mdev->dev, 800 priv->base_qpn, 801 priv->port); 802 if (err) 803 en_err(priv, "Failed enabling unicast promiscuous mode\n"); 804 805 /* Add the default qp number as multicast 806 * promisc 807 */ 808 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 809 err = mlx4_multicast_promisc_add(mdev->dev, 810 priv->base_qpn, 811 priv->port); 812 if (err) 813 en_err(priv, "Failed enabling multicast promiscuous mode\n"); 814 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 815 } 816 break; 817 818 case MLX4_STEERING_MODE_A0: 819 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 820 priv->port, 821 priv->base_qpn, 822 1); 823 if (err) 824 en_err(priv, "Failed enabling promiscuous mode\n"); 825 break; 826 } 827 828 /* Disable port multicast filter (unconditionally) */ 829 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 830 0, MLX4_MCAST_DISABLE); 831 if (err) 832 en_err(priv, "Failed disabling multicast filter\n"); 833 } 834 } 835 836 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv, 837 struct mlx4_en_dev *mdev) 838 { 839 int err = 0; 840 841 if (netif_msg_rx_status(priv)) 842 en_warn(priv, "Leaving promiscuous mode\n"); 843 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 844 845 /* Disable promiscouos mode */ 846 switch (mdev->dev->caps.steering_mode) { 847 case MLX4_STEERING_MODE_DEVICE_MANAGED: 848 err = mlx4_flow_steer_promisc_remove(mdev->dev, 849 priv->port, 850 MLX4_FS_ALL_DEFAULT); 851 if (err) 852 en_err(priv, "Failed disabling promiscuous mode\n"); 853 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 854 break; 855 856 case MLX4_STEERING_MODE_B0: 857 err = mlx4_unicast_promisc_remove(mdev->dev, 858 priv->base_qpn, 859 priv->port); 860 if (err) 861 en_err(priv, "Failed disabling unicast promiscuous mode\n"); 862 /* Disable Multicast promisc */ 863 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 864 err = mlx4_multicast_promisc_remove(mdev->dev, 865 priv->base_qpn, 866 priv->port); 867 if (err) 868 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 869 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 870 } 871 break; 872 873 case MLX4_STEERING_MODE_A0: 874 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 875 priv->port, 876 priv->base_qpn, 0); 877 if (err) 878 en_err(priv, "Failed disabling promiscuous mode\n"); 879 break; 880 } 881 } 882 883 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, 884 struct net_device *dev, 885 struct mlx4_en_dev *mdev) 886 { 887 struct mlx4_en_mc_list *mclist, *tmp; 888 u64 mcast_addr = 0; 889 u8 mc_list[16] = {0}; 890 int err = 0; 891 892 /* Enable/disable the multicast filter according to IFF_ALLMULTI */ 893 if (dev->flags & IFF_ALLMULTI) { 894 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 895 0, MLX4_MCAST_DISABLE); 896 if (err) 897 en_err(priv, "Failed disabling multicast filter\n"); 898 899 /* Add the default qp number as multicast promisc */ 900 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 901 switch (mdev->dev->caps.steering_mode) { 902 case MLX4_STEERING_MODE_DEVICE_MANAGED: 903 err = mlx4_flow_steer_promisc_add(mdev->dev, 904 priv->port, 905 priv->base_qpn, 906 MLX4_FS_MC_DEFAULT); 907 break; 908 909 case MLX4_STEERING_MODE_B0: 910 err = mlx4_multicast_promisc_add(mdev->dev, 911 priv->base_qpn, 912 priv->port); 913 break; 914 915 case MLX4_STEERING_MODE_A0: 916 break; 917 } 918 if (err) 919 en_err(priv, "Failed entering multicast promisc mode\n"); 920 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 921 } 922 } else { 923 /* Disable Multicast promisc */ 924 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 925 switch (mdev->dev->caps.steering_mode) { 926 case MLX4_STEERING_MODE_DEVICE_MANAGED: 927 err = mlx4_flow_steer_promisc_remove(mdev->dev, 928 priv->port, 929 MLX4_FS_MC_DEFAULT); 930 break; 931 932 case MLX4_STEERING_MODE_B0: 933 err = mlx4_multicast_promisc_remove(mdev->dev, 934 priv->base_qpn, 935 priv->port); 936 break; 937 938 case MLX4_STEERING_MODE_A0: 939 break; 940 } 941 if (err) 942 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 943 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 944 } 945 946 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 947 0, MLX4_MCAST_DISABLE); 948 if (err) 949 en_err(priv, "Failed disabling multicast filter\n"); 950 951 /* Flush mcast filter and init it with broadcast address */ 952 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, 953 1, MLX4_MCAST_CONFIG); 954 955 /* Update multicast list - we cache all addresses so they won't 956 * change while HW is updated holding the command semaphor */ 957 netif_addr_lock_bh(dev); 958 mlx4_en_cache_mclist(dev); 959 netif_addr_unlock_bh(dev); 960 list_for_each_entry(mclist, &priv->mc_list, list) { 961 mcast_addr = mlx4_mac_to_u64(mclist->addr); 962 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 963 mcast_addr, 0, MLX4_MCAST_CONFIG); 964 } 965 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 966 0, MLX4_MCAST_ENABLE); 967 if (err) 968 en_err(priv, "Failed enabling multicast filter\n"); 969 970 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); 971 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 972 if (mclist->action == MCLIST_REM) { 973 /* detach this address and delete from list */ 974 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 975 mc_list[5] = priv->port; 976 err = mlx4_multicast_detach(mdev->dev, 977 &priv->rss_map.indir_qp, 978 mc_list, 979 MLX4_PROT_ETH, 980 mclist->reg_id); 981 if (err) 982 en_err(priv, "Fail to detach multicast address\n"); 983 984 if (mclist->tunnel_reg_id) { 985 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id); 986 if (err) 987 en_err(priv, "Failed to detach multicast address\n"); 988 } 989 990 /* remove from list */ 991 list_del(&mclist->list); 992 kfree(mclist); 993 } else if (mclist->action == MCLIST_ADD) { 994 /* attach the address */ 995 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 996 /* needed for B0 steering support */ 997 mc_list[5] = priv->port; 998 err = mlx4_multicast_attach(mdev->dev, 999 &priv->rss_map.indir_qp, 1000 mc_list, 1001 priv->port, 0, 1002 MLX4_PROT_ETH, 1003 &mclist->reg_id); 1004 if (err) 1005 en_err(priv, "Fail to attach multicast address\n"); 1006 1007 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn, 1008 &mclist->tunnel_reg_id); 1009 if (err) 1010 en_err(priv, "Failed to attach multicast address\n"); 1011 } 1012 } 1013 } 1014 } 1015 1016 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, 1017 struct net_device *dev, 1018 struct mlx4_en_dev *mdev) 1019 { 1020 struct netdev_hw_addr *ha; 1021 struct mlx4_mac_entry *entry; 1022 struct hlist_node *tmp; 1023 bool found; 1024 u64 mac; 1025 int err = 0; 1026 struct hlist_head *bucket; 1027 unsigned int i; 1028 int removed = 0; 1029 u32 prev_flags; 1030 1031 /* Note that we do not need to protect our mac_hash traversal with rcu, 1032 * since all modification code is protected by mdev->state_lock 1033 */ 1034 1035 /* find what to remove */ 1036 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1037 bucket = &priv->mac_hash[i]; 1038 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1039 found = false; 1040 netdev_for_each_uc_addr(ha, dev) { 1041 if (ether_addr_equal_64bits(entry->mac, 1042 ha->addr)) { 1043 found = true; 1044 break; 1045 } 1046 } 1047 1048 /* MAC address of the port is not in uc list */ 1049 if (ether_addr_equal_64bits(entry->mac, 1050 priv->current_mac)) 1051 found = true; 1052 1053 if (!found) { 1054 mac = mlx4_mac_to_u64(entry->mac); 1055 mlx4_en_uc_steer_release(priv, entry->mac, 1056 priv->base_qpn, 1057 entry->reg_id); 1058 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1059 1060 hlist_del_rcu(&entry->hlist); 1061 kfree_rcu(entry, rcu); 1062 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", 1063 entry->mac, priv->port); 1064 ++removed; 1065 } 1066 } 1067 } 1068 1069 /* if we didn't remove anything, there is no use in trying to add 1070 * again once we are in a forced promisc mode state 1071 */ 1072 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) 1073 return; 1074 1075 prev_flags = priv->flags; 1076 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 1077 1078 /* find what to add */ 1079 netdev_for_each_uc_addr(ha, dev) { 1080 found = false; 1081 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; 1082 hlist_for_each_entry(entry, bucket, hlist) { 1083 if (ether_addr_equal_64bits(entry->mac, ha->addr)) { 1084 found = true; 1085 break; 1086 } 1087 } 1088 1089 if (!found) { 1090 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1091 if (!entry) { 1092 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", 1093 ha->addr, priv->port); 1094 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1095 break; 1096 } 1097 mac = mlx4_mac_to_u64(ha->addr); 1098 memcpy(entry->mac, ha->addr, ETH_ALEN); 1099 err = mlx4_register_mac(mdev->dev, priv->port, mac); 1100 if (err < 0) { 1101 en_err(priv, "Failed registering MAC %pM on port %d: %d\n", 1102 ha->addr, priv->port, err); 1103 kfree(entry); 1104 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1105 break; 1106 } 1107 err = mlx4_en_uc_steer_add(priv, ha->addr, 1108 &priv->base_qpn, 1109 &entry->reg_id); 1110 if (err) { 1111 en_err(priv, "Failed adding MAC %pM on port %d: %d\n", 1112 ha->addr, priv->port, err); 1113 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1114 kfree(entry); 1115 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1116 break; 1117 } else { 1118 unsigned int mac_hash; 1119 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", 1120 ha->addr, priv->port); 1121 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; 1122 bucket = &priv->mac_hash[mac_hash]; 1123 hlist_add_head_rcu(&entry->hlist, bucket); 1124 } 1125 } 1126 } 1127 1128 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1129 en_warn(priv, "Forcing promiscuous mode on port:%d\n", 1130 priv->port); 1131 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1132 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", 1133 priv->port); 1134 } 1135 } 1136 1137 static void mlx4_en_do_set_rx_mode(struct work_struct *work) 1138 { 1139 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1140 rx_mode_task); 1141 struct mlx4_en_dev *mdev = priv->mdev; 1142 struct net_device *dev = priv->dev; 1143 1144 mutex_lock(&mdev->state_lock); 1145 if (!mdev->device_up) { 1146 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); 1147 goto out; 1148 } 1149 if (!priv->port_up) { 1150 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); 1151 goto out; 1152 } 1153 1154 if (!netif_carrier_ok(dev)) { 1155 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { 1156 if (priv->port_state.link_state) { 1157 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; 1158 netif_carrier_on(dev); 1159 en_dbg(LINK, priv, "Link Up\n"); 1160 } 1161 } 1162 } 1163 1164 if (dev->priv_flags & IFF_UNICAST_FLT) 1165 mlx4_en_do_uc_filter(priv, dev, mdev); 1166 1167 /* Promsicuous mode: disable all filters */ 1168 if ((dev->flags & IFF_PROMISC) || 1169 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { 1170 mlx4_en_set_promisc_mode(priv, mdev); 1171 goto out; 1172 } 1173 1174 /* Not in promiscuous mode */ 1175 if (priv->flags & MLX4_EN_FLAG_PROMISC) 1176 mlx4_en_clear_promisc_mode(priv, mdev); 1177 1178 mlx4_en_do_multicast(priv, dev, mdev); 1179 out: 1180 mutex_unlock(&mdev->state_lock); 1181 } 1182 1183 #ifdef CONFIG_NET_POLL_CONTROLLER 1184 static void mlx4_en_netpoll(struct net_device *dev) 1185 { 1186 struct mlx4_en_priv *priv = netdev_priv(dev); 1187 struct mlx4_en_cq *cq; 1188 int i; 1189 1190 for (i = 0; i < priv->rx_ring_num; i++) { 1191 cq = priv->rx_cq[i]; 1192 napi_schedule(&cq->napi); 1193 } 1194 } 1195 #endif 1196 1197 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv) 1198 { 1199 u64 reg_id; 1200 int err = 0; 1201 int *qpn = &priv->base_qpn; 1202 struct mlx4_mac_entry *entry; 1203 1204 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); 1205 if (err) 1206 return err; 1207 1208 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn, 1209 &priv->tunnel_reg_id); 1210 if (err) 1211 goto tunnel_err; 1212 1213 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1214 if (!entry) { 1215 err = -ENOMEM; 1216 goto alloc_err; 1217 } 1218 1219 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac)); 1220 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac)); 1221 entry->reg_id = reg_id; 1222 hlist_add_head_rcu(&entry->hlist, 1223 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); 1224 1225 return 0; 1226 1227 alloc_err: 1228 if (priv->tunnel_reg_id) 1229 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 1230 1231 tunnel_err: 1232 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 1233 return err; 1234 } 1235 1236 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv) 1237 { 1238 u64 mac; 1239 unsigned int i; 1240 int qpn = priv->base_qpn; 1241 struct hlist_head *bucket; 1242 struct hlist_node *tmp; 1243 struct mlx4_mac_entry *entry; 1244 1245 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1246 bucket = &priv->mac_hash[i]; 1247 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1248 mac = mlx4_mac_to_u64(entry->mac); 1249 en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n", 1250 entry->mac); 1251 mlx4_en_uc_steer_release(priv, entry->mac, 1252 qpn, entry->reg_id); 1253 1254 mlx4_unregister_mac(priv->mdev->dev, priv->port, mac); 1255 hlist_del_rcu(&entry->hlist); 1256 kfree_rcu(entry, rcu); 1257 } 1258 } 1259 1260 if (priv->tunnel_reg_id) { 1261 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 1262 priv->tunnel_reg_id = 0; 1263 } 1264 } 1265 1266 static void mlx4_en_tx_timeout(struct net_device *dev) 1267 { 1268 struct mlx4_en_priv *priv = netdev_priv(dev); 1269 struct mlx4_en_dev *mdev = priv->mdev; 1270 int i; 1271 1272 if (netif_msg_timer(priv)) 1273 en_warn(priv, "Tx timeout called on port:%d\n", priv->port); 1274 1275 for (i = 0; i < priv->tx_ring_num; i++) { 1276 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) 1277 continue; 1278 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", 1279 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn, 1280 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod); 1281 } 1282 1283 priv->port_stats.tx_timeout++; 1284 en_dbg(DRV, priv, "Scheduling watchdog\n"); 1285 queue_work(mdev->workqueue, &priv->watchdog_task); 1286 } 1287 1288 1289 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev) 1290 { 1291 struct mlx4_en_priv *priv = netdev_priv(dev); 1292 1293 spin_lock_bh(&priv->stats_lock); 1294 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats)); 1295 spin_unlock_bh(&priv->stats_lock); 1296 1297 return &priv->ret_stats; 1298 } 1299 1300 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1301 { 1302 struct mlx4_en_cq *cq; 1303 int i; 1304 1305 /* If we haven't received a specific coalescing setting 1306 * (module param), we set the moderation parameters as follows: 1307 * - moder_cnt is set to the number of mtu sized packets to 1308 * satisfy our coalescing target. 1309 * - moder_time is set to a fixed value. 1310 */ 1311 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1312 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1313 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1314 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1315 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1316 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1317 1318 /* Setup cq moderation params */ 1319 for (i = 0; i < priv->rx_ring_num; i++) { 1320 cq = priv->rx_cq[i]; 1321 cq->moder_cnt = priv->rx_frames; 1322 cq->moder_time = priv->rx_usecs; 1323 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1324 priv->last_moder_packets[i] = 0; 1325 priv->last_moder_bytes[i] = 0; 1326 } 1327 1328 for (i = 0; i < priv->tx_ring_num; i++) { 1329 cq = priv->tx_cq[i]; 1330 cq->moder_cnt = priv->tx_frames; 1331 cq->moder_time = priv->tx_usecs; 1332 } 1333 1334 /* Reset auto-moderation params */ 1335 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1336 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1337 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1338 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1339 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1340 priv->adaptive_rx_coal = 1; 1341 priv->last_moder_jiffies = 0; 1342 priv->last_moder_tx_packets = 0; 1343 } 1344 1345 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1346 { 1347 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1348 struct mlx4_en_cq *cq; 1349 unsigned long packets; 1350 unsigned long rate; 1351 unsigned long avg_pkt_size; 1352 unsigned long rx_packets; 1353 unsigned long rx_bytes; 1354 unsigned long rx_pkt_diff; 1355 int moder_time; 1356 int ring, err; 1357 1358 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1359 return; 1360 1361 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1362 spin_lock_bh(&priv->stats_lock); 1363 rx_packets = priv->rx_ring[ring]->packets; 1364 rx_bytes = priv->rx_ring[ring]->bytes; 1365 spin_unlock_bh(&priv->stats_lock); 1366 1367 rx_pkt_diff = ((unsigned long) (rx_packets - 1368 priv->last_moder_packets[ring])); 1369 packets = rx_pkt_diff; 1370 rate = packets * HZ / period; 1371 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1372 priv->last_moder_bytes[ring])) / packets : 0; 1373 1374 /* Apply auto-moderation only when packet rate 1375 * exceeds a rate that it matters */ 1376 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1377 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1378 if (rate < priv->pkt_rate_low) 1379 moder_time = priv->rx_usecs_low; 1380 else if (rate > priv->pkt_rate_high) 1381 moder_time = priv->rx_usecs_high; 1382 else 1383 moder_time = (rate - priv->pkt_rate_low) * 1384 (priv->rx_usecs_high - priv->rx_usecs_low) / 1385 (priv->pkt_rate_high - priv->pkt_rate_low) + 1386 priv->rx_usecs_low; 1387 } else { 1388 moder_time = priv->rx_usecs_low; 1389 } 1390 1391 if (moder_time != priv->last_moder_time[ring]) { 1392 priv->last_moder_time[ring] = moder_time; 1393 cq = priv->rx_cq[ring]; 1394 cq->moder_time = moder_time; 1395 cq->moder_cnt = priv->rx_frames; 1396 err = mlx4_en_set_cq_moder(priv, cq); 1397 if (err) 1398 en_err(priv, "Failed modifying moderation for cq:%d\n", 1399 ring); 1400 } 1401 priv->last_moder_packets[ring] = rx_packets; 1402 priv->last_moder_bytes[ring] = rx_bytes; 1403 } 1404 1405 priv->last_moder_jiffies = jiffies; 1406 } 1407 1408 static void mlx4_en_do_get_stats(struct work_struct *work) 1409 { 1410 struct delayed_work *delay = to_delayed_work(work); 1411 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1412 stats_task); 1413 struct mlx4_en_dev *mdev = priv->mdev; 1414 int err; 1415 1416 mutex_lock(&mdev->state_lock); 1417 if (mdev->device_up) { 1418 if (priv->port_up) { 1419 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1420 if (err) 1421 en_dbg(HW, priv, "Could not update stats\n"); 1422 1423 mlx4_en_auto_moderation(priv); 1424 } 1425 1426 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1427 } 1428 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1429 mlx4_en_do_set_mac(priv, priv->current_mac); 1430 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1431 } 1432 mutex_unlock(&mdev->state_lock); 1433 } 1434 1435 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1436 * periodically 1437 */ 1438 static void mlx4_en_service_task(struct work_struct *work) 1439 { 1440 struct delayed_work *delay = to_delayed_work(work); 1441 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1442 service_task); 1443 struct mlx4_en_dev *mdev = priv->mdev; 1444 1445 mutex_lock(&mdev->state_lock); 1446 if (mdev->device_up) { 1447 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1448 mlx4_en_ptp_overflow_check(mdev); 1449 1450 mlx4_en_recover_from_oom(priv); 1451 queue_delayed_work(mdev->workqueue, &priv->service_task, 1452 SERVICE_TASK_DELAY); 1453 } 1454 mutex_unlock(&mdev->state_lock); 1455 } 1456 1457 static void mlx4_en_linkstate(struct work_struct *work) 1458 { 1459 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1460 linkstate_task); 1461 struct mlx4_en_dev *mdev = priv->mdev; 1462 int linkstate = priv->link_state; 1463 1464 mutex_lock(&mdev->state_lock); 1465 /* If observable port state changed set carrier state and 1466 * report to system log */ 1467 if (priv->last_link_state != linkstate) { 1468 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1469 en_info(priv, "Link Down\n"); 1470 netif_carrier_off(priv->dev); 1471 } else { 1472 en_info(priv, "Link Up\n"); 1473 netif_carrier_on(priv->dev); 1474 } 1475 } 1476 priv->last_link_state = linkstate; 1477 mutex_unlock(&mdev->state_lock); 1478 } 1479 1480 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1481 { 1482 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx]; 1483 int numa_node = priv->mdev->dev->numa_node; 1484 1485 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL)) 1486 return -ENOMEM; 1487 1488 cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node), 1489 ring->affinity_mask); 1490 return 0; 1491 } 1492 1493 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1494 { 1495 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask); 1496 } 1497 1498 int mlx4_en_start_port(struct net_device *dev) 1499 { 1500 struct mlx4_en_priv *priv = netdev_priv(dev); 1501 struct mlx4_en_dev *mdev = priv->mdev; 1502 struct mlx4_en_cq *cq; 1503 struct mlx4_en_tx_ring *tx_ring; 1504 int rx_index = 0; 1505 int tx_index = 0; 1506 int err = 0; 1507 int i; 1508 int j; 1509 u8 mc_list[16] = {0}; 1510 1511 if (priv->port_up) { 1512 en_dbg(DRV, priv, "start port called while port already up\n"); 1513 return 0; 1514 } 1515 1516 INIT_LIST_HEAD(&priv->mc_list); 1517 INIT_LIST_HEAD(&priv->curr_list); 1518 INIT_LIST_HEAD(&priv->ethtool_list); 1519 memset(&priv->ethtool_rules[0], 0, 1520 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1521 1522 /* Calculate Rx buf size */ 1523 dev->mtu = min(dev->mtu, priv->max_mtu); 1524 mlx4_en_calc_rx_buf(dev); 1525 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1526 1527 /* Configure rx cq's and rings */ 1528 err = mlx4_en_activate_rx_rings(priv); 1529 if (err) { 1530 en_err(priv, "Failed to activate RX rings\n"); 1531 return err; 1532 } 1533 for (i = 0; i < priv->rx_ring_num; i++) { 1534 cq = priv->rx_cq[i]; 1535 1536 err = mlx4_en_init_affinity_hint(priv, i); 1537 if (err) { 1538 en_err(priv, "Failed preparing IRQ affinity hint\n"); 1539 goto cq_err; 1540 } 1541 1542 err = mlx4_en_activate_cq(priv, cq, i); 1543 if (err) { 1544 en_err(priv, "Failed activating Rx CQ\n"); 1545 mlx4_en_free_affinity_hint(priv, i); 1546 goto cq_err; 1547 } 1548 1549 for (j = 0; j < cq->size; j++) { 1550 struct mlx4_cqe *cqe = NULL; 1551 1552 cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) + 1553 priv->cqe_factor; 1554 cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1555 } 1556 1557 err = mlx4_en_set_cq_moder(priv, cq); 1558 if (err) { 1559 en_err(priv, "Failed setting cq moderation parameters\n"); 1560 mlx4_en_deactivate_cq(priv, cq); 1561 mlx4_en_free_affinity_hint(priv, i); 1562 goto cq_err; 1563 } 1564 mlx4_en_arm_cq(priv, cq); 1565 priv->rx_ring[i]->cqn = cq->mcq.cqn; 1566 ++rx_index; 1567 } 1568 1569 /* Set qp number */ 1570 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1571 err = mlx4_en_get_qp(priv); 1572 if (err) { 1573 en_err(priv, "Failed getting eth qp\n"); 1574 goto cq_err; 1575 } 1576 mdev->mac_removed[priv->port] = 0; 1577 1578 priv->counter_index = 1579 mlx4_get_default_counter_index(mdev->dev, priv->port); 1580 1581 err = mlx4_en_config_rss_steer(priv); 1582 if (err) { 1583 en_err(priv, "Failed configuring rss steering\n"); 1584 goto mac_err; 1585 } 1586 1587 err = mlx4_en_create_drop_qp(priv); 1588 if (err) 1589 goto rss_err; 1590 1591 /* Configure tx cq's and rings */ 1592 for (i = 0; i < priv->tx_ring_num; i++) { 1593 /* Configure cq */ 1594 cq = priv->tx_cq[i]; 1595 err = mlx4_en_activate_cq(priv, cq, i); 1596 if (err) { 1597 en_err(priv, "Failed allocating Tx CQ\n"); 1598 goto tx_err; 1599 } 1600 err = mlx4_en_set_cq_moder(priv, cq); 1601 if (err) { 1602 en_err(priv, "Failed setting cq moderation parameters\n"); 1603 mlx4_en_deactivate_cq(priv, cq); 1604 goto tx_err; 1605 } 1606 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i); 1607 cq->buf->wqe_index = cpu_to_be16(0xffff); 1608 1609 /* Configure ring */ 1610 tx_ring = priv->tx_ring[i]; 1611 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, 1612 i / priv->num_tx_rings_p_up); 1613 if (err) { 1614 en_err(priv, "Failed allocating Tx ring\n"); 1615 mlx4_en_deactivate_cq(priv, cq); 1616 goto tx_err; 1617 } 1618 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1619 1620 /* Arm CQ for TX completions */ 1621 mlx4_en_arm_cq(priv, cq); 1622 1623 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1624 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1625 *((u32 *) (tx_ring->buf + j)) = 0xffffffff; 1626 ++tx_index; 1627 } 1628 1629 /* Configure port */ 1630 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1631 priv->rx_skb_size + ETH_FCS_LEN, 1632 priv->prof->tx_pause, 1633 priv->prof->tx_ppp, 1634 priv->prof->rx_pause, 1635 priv->prof->rx_ppp); 1636 if (err) { 1637 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1638 priv->port, err); 1639 goto tx_err; 1640 } 1641 /* Set default qp number */ 1642 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1643 if (err) { 1644 en_err(priv, "Failed setting default qp numbers\n"); 1645 goto tx_err; 1646 } 1647 1648 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 1649 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 1650 if (err) { 1651 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 1652 err); 1653 goto tx_err; 1654 } 1655 } 1656 1657 /* Init port */ 1658 en_dbg(HW, priv, "Initializing port\n"); 1659 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1660 if (err) { 1661 en_err(priv, "Failed Initializing port\n"); 1662 goto tx_err; 1663 } 1664 1665 /* Set Unicast and VXLAN steering rules */ 1666 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 && 1667 mlx4_en_set_rss_steer_rules(priv)) 1668 mlx4_warn(mdev, "Failed setting steering rules\n"); 1669 1670 /* Attach rx QP to bradcast address */ 1671 eth_broadcast_addr(&mc_list[10]); 1672 mc_list[5] = priv->port; /* needed for B0 steering support */ 1673 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1674 priv->port, 0, MLX4_PROT_ETH, 1675 &priv->broadcast_id)) 1676 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1677 1678 /* Must redo promiscuous mode setup. */ 1679 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1680 1681 /* Schedule multicast task to populate multicast list */ 1682 queue_work(mdev->workqueue, &priv->rx_mode_task); 1683 1684 #ifdef CONFIG_MLX4_EN_VXLAN 1685 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 1686 vxlan_get_rx_port(dev); 1687 #endif 1688 priv->port_up = true; 1689 netif_tx_start_all_queues(dev); 1690 netif_device_attach(dev); 1691 1692 return 0; 1693 1694 tx_err: 1695 while (tx_index--) { 1696 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]); 1697 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]); 1698 } 1699 mlx4_en_destroy_drop_qp(priv); 1700 rss_err: 1701 mlx4_en_release_rss_steer(priv); 1702 mac_err: 1703 mlx4_en_put_qp(priv); 1704 cq_err: 1705 while (rx_index--) { 1706 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); 1707 mlx4_en_free_affinity_hint(priv, rx_index); 1708 } 1709 for (i = 0; i < priv->rx_ring_num; i++) 1710 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1711 1712 return err; /* need to close devices */ 1713 } 1714 1715 1716 void mlx4_en_stop_port(struct net_device *dev, int detach) 1717 { 1718 struct mlx4_en_priv *priv = netdev_priv(dev); 1719 struct mlx4_en_dev *mdev = priv->mdev; 1720 struct mlx4_en_mc_list *mclist, *tmp; 1721 struct ethtool_flow_id *flow, *tmp_flow; 1722 int i; 1723 u8 mc_list[16] = {0}; 1724 1725 if (!priv->port_up) { 1726 en_dbg(DRV, priv, "stop port called while port already down\n"); 1727 return; 1728 } 1729 1730 /* close port*/ 1731 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1732 1733 /* Synchronize with tx routine */ 1734 netif_tx_lock_bh(dev); 1735 if (detach) 1736 netif_device_detach(dev); 1737 netif_tx_stop_all_queues(dev); 1738 netif_tx_unlock_bh(dev); 1739 1740 netif_tx_disable(dev); 1741 1742 /* Set port as not active */ 1743 priv->port_up = false; 1744 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 1745 1746 /* Promsicuous mode */ 1747 if (mdev->dev->caps.steering_mode == 1748 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1749 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | 1750 MLX4_EN_FLAG_MC_PROMISC); 1751 mlx4_flow_steer_promisc_remove(mdev->dev, 1752 priv->port, 1753 MLX4_FS_ALL_DEFAULT); 1754 mlx4_flow_steer_promisc_remove(mdev->dev, 1755 priv->port, 1756 MLX4_FS_MC_DEFAULT); 1757 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { 1758 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 1759 1760 /* Disable promiscouos mode */ 1761 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, 1762 priv->port); 1763 1764 /* Disable Multicast promisc */ 1765 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1766 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, 1767 priv->port); 1768 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1769 } 1770 } 1771 1772 /* Detach All multicasts */ 1773 eth_broadcast_addr(&mc_list[10]); 1774 mc_list[5] = priv->port; /* needed for B0 steering support */ 1775 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1776 MLX4_PROT_ETH, priv->broadcast_id); 1777 list_for_each_entry(mclist, &priv->curr_list, list) { 1778 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1779 mc_list[5] = priv->port; 1780 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, 1781 mc_list, MLX4_PROT_ETH, mclist->reg_id); 1782 if (mclist->tunnel_reg_id) 1783 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id); 1784 } 1785 mlx4_en_clear_list(dev); 1786 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1787 list_del(&mclist->list); 1788 kfree(mclist); 1789 } 1790 1791 /* Flush multicast filter */ 1792 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); 1793 1794 /* Remove flow steering rules for the port*/ 1795 if (mdev->dev->caps.steering_mode == 1796 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1797 ASSERT_RTNL(); 1798 list_for_each_entry_safe(flow, tmp_flow, 1799 &priv->ethtool_list, list) { 1800 mlx4_flow_detach(mdev->dev, flow->id); 1801 list_del(&flow->list); 1802 } 1803 } 1804 1805 mlx4_en_destroy_drop_qp(priv); 1806 1807 /* Free TX Rings */ 1808 for (i = 0; i < priv->tx_ring_num; i++) { 1809 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]); 1810 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]); 1811 } 1812 msleep(10); 1813 1814 for (i = 0; i < priv->tx_ring_num; i++) 1815 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]); 1816 1817 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 1818 mlx4_en_delete_rss_steer_rules(priv); 1819 1820 /* Free RSS qps */ 1821 mlx4_en_release_rss_steer(priv); 1822 1823 /* Unregister Mac address for the port */ 1824 mlx4_en_put_qp(priv); 1825 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN)) 1826 mdev->mac_removed[priv->port] = 1; 1827 1828 /* Free RX Rings */ 1829 for (i = 0; i < priv->rx_ring_num; i++) { 1830 struct mlx4_en_cq *cq = priv->rx_cq[i]; 1831 1832 napi_synchronize(&cq->napi); 1833 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1834 mlx4_en_deactivate_cq(priv, cq); 1835 1836 mlx4_en_free_affinity_hint(priv, i); 1837 } 1838 } 1839 1840 static void mlx4_en_restart(struct work_struct *work) 1841 { 1842 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1843 watchdog_task); 1844 struct mlx4_en_dev *mdev = priv->mdev; 1845 struct net_device *dev = priv->dev; 1846 1847 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1848 1849 mutex_lock(&mdev->state_lock); 1850 if (priv->port_up) { 1851 mlx4_en_stop_port(dev, 1); 1852 if (mlx4_en_start_port(dev)) 1853 en_err(priv, "Failed restarting port %d\n", priv->port); 1854 } 1855 mutex_unlock(&mdev->state_lock); 1856 } 1857 1858 static void mlx4_en_clear_stats(struct net_device *dev) 1859 { 1860 struct mlx4_en_priv *priv = netdev_priv(dev); 1861 struct mlx4_en_dev *mdev = priv->mdev; 1862 int i; 1863 1864 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1865 en_dbg(HW, priv, "Failed dumping statistics\n"); 1866 1867 memset(&priv->stats, 0, sizeof(priv->stats)); 1868 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1869 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1870 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1871 memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats)); 1872 memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats)); 1873 memset(&priv->rx_priority_flowstats, 0, 1874 sizeof(priv->rx_priority_flowstats)); 1875 memset(&priv->tx_priority_flowstats, 0, 1876 sizeof(priv->tx_priority_flowstats)); 1877 memset(&priv->pf_stats, 0, sizeof(priv->pf_stats)); 1878 1879 for (i = 0; i < priv->tx_ring_num; i++) { 1880 priv->tx_ring[i]->bytes = 0; 1881 priv->tx_ring[i]->packets = 0; 1882 priv->tx_ring[i]->tx_csum = 0; 1883 } 1884 for (i = 0; i < priv->rx_ring_num; i++) { 1885 priv->rx_ring[i]->bytes = 0; 1886 priv->rx_ring[i]->packets = 0; 1887 priv->rx_ring[i]->csum_ok = 0; 1888 priv->rx_ring[i]->csum_none = 0; 1889 priv->rx_ring[i]->csum_complete = 0; 1890 } 1891 } 1892 1893 static int mlx4_en_open(struct net_device *dev) 1894 { 1895 struct mlx4_en_priv *priv = netdev_priv(dev); 1896 struct mlx4_en_dev *mdev = priv->mdev; 1897 int err = 0; 1898 1899 mutex_lock(&mdev->state_lock); 1900 1901 if (!mdev->device_up) { 1902 en_err(priv, "Cannot open - device down/disabled\n"); 1903 err = -EBUSY; 1904 goto out; 1905 } 1906 1907 /* Reset HW statistics and SW counters */ 1908 mlx4_en_clear_stats(dev); 1909 1910 err = mlx4_en_start_port(dev); 1911 if (err) 1912 en_err(priv, "Failed starting port:%d\n", priv->port); 1913 1914 out: 1915 mutex_unlock(&mdev->state_lock); 1916 return err; 1917 } 1918 1919 1920 static int mlx4_en_close(struct net_device *dev) 1921 { 1922 struct mlx4_en_priv *priv = netdev_priv(dev); 1923 struct mlx4_en_dev *mdev = priv->mdev; 1924 1925 en_dbg(IFDOWN, priv, "Close port called\n"); 1926 1927 mutex_lock(&mdev->state_lock); 1928 1929 mlx4_en_stop_port(dev, 0); 1930 netif_carrier_off(dev); 1931 1932 mutex_unlock(&mdev->state_lock); 1933 return 0; 1934 } 1935 1936 void mlx4_en_free_resources(struct mlx4_en_priv *priv) 1937 { 1938 int i; 1939 1940 #ifdef CONFIG_RFS_ACCEL 1941 priv->dev->rx_cpu_rmap = NULL; 1942 #endif 1943 1944 for (i = 0; i < priv->tx_ring_num; i++) { 1945 if (priv->tx_ring && priv->tx_ring[i]) 1946 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 1947 if (priv->tx_cq && priv->tx_cq[i]) 1948 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 1949 } 1950 1951 for (i = 0; i < priv->rx_ring_num; i++) { 1952 if (priv->rx_ring[i]) 1953 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 1954 priv->prof->rx_ring_size, priv->stride); 1955 if (priv->rx_cq[i]) 1956 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 1957 } 1958 1959 } 1960 1961 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 1962 { 1963 struct mlx4_en_port_profile *prof = priv->prof; 1964 int i; 1965 int node; 1966 1967 /* Create tx Rings */ 1968 for (i = 0; i < priv->tx_ring_num; i++) { 1969 node = cpu_to_node(i % num_online_cpus()); 1970 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 1971 prof->tx_ring_size, i, TX, node)) 1972 goto err; 1973 1974 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], 1975 prof->tx_ring_size, TXBB_SIZE, 1976 node, i)) 1977 goto err; 1978 } 1979 1980 /* Create rx Rings */ 1981 for (i = 0; i < priv->rx_ring_num; i++) { 1982 node = cpu_to_node(i % num_online_cpus()); 1983 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 1984 prof->rx_ring_size, i, RX, node)) 1985 goto err; 1986 1987 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 1988 prof->rx_ring_size, priv->stride, 1989 node)) 1990 goto err; 1991 } 1992 1993 #ifdef CONFIG_RFS_ACCEL 1994 priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port); 1995 #endif 1996 1997 return 0; 1998 1999 err: 2000 en_err(priv, "Failed to allocate NIC resources\n"); 2001 for (i = 0; i < priv->rx_ring_num; i++) { 2002 if (priv->rx_ring[i]) 2003 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2004 prof->rx_ring_size, 2005 priv->stride); 2006 if (priv->rx_cq[i]) 2007 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2008 } 2009 for (i = 0; i < priv->tx_ring_num; i++) { 2010 if (priv->tx_ring[i]) 2011 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2012 if (priv->tx_cq[i]) 2013 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2014 } 2015 return -ENOMEM; 2016 } 2017 2018 2019 void mlx4_en_destroy_netdev(struct net_device *dev) 2020 { 2021 struct mlx4_en_priv *priv = netdev_priv(dev); 2022 struct mlx4_en_dev *mdev = priv->mdev; 2023 2024 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2025 2026 /* Unregister device - this will close the port if it was up */ 2027 if (priv->registered) 2028 unregister_netdev(dev); 2029 2030 if (priv->allocated) 2031 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2032 2033 cancel_delayed_work(&priv->stats_task); 2034 cancel_delayed_work(&priv->service_task); 2035 /* flush any pending task for this netdev */ 2036 flush_workqueue(mdev->workqueue); 2037 2038 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2039 mlx4_en_remove_timestamp(mdev); 2040 2041 /* Detach the netdev so tasks would not attempt to access it */ 2042 mutex_lock(&mdev->state_lock); 2043 mdev->pndev[priv->port] = NULL; 2044 mdev->upper[priv->port] = NULL; 2045 mutex_unlock(&mdev->state_lock); 2046 2047 mlx4_en_free_resources(priv); 2048 2049 kfree(priv->tx_ring); 2050 kfree(priv->tx_cq); 2051 2052 free_netdev(dev); 2053 } 2054 2055 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2056 { 2057 struct mlx4_en_priv *priv = netdev_priv(dev); 2058 struct mlx4_en_dev *mdev = priv->mdev; 2059 int err = 0; 2060 2061 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2062 dev->mtu, new_mtu); 2063 2064 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 2065 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 2066 return -EPERM; 2067 } 2068 dev->mtu = new_mtu; 2069 2070 if (netif_running(dev)) { 2071 mutex_lock(&mdev->state_lock); 2072 if (!mdev->device_up) { 2073 /* NIC is probably restarting - let watchdog task reset 2074 * the port */ 2075 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2076 } else { 2077 mlx4_en_stop_port(dev, 1); 2078 err = mlx4_en_start_port(dev); 2079 if (err) { 2080 en_err(priv, "Failed restarting port:%d\n", 2081 priv->port); 2082 queue_work(mdev->workqueue, &priv->watchdog_task); 2083 } 2084 } 2085 mutex_unlock(&mdev->state_lock); 2086 } 2087 return 0; 2088 } 2089 2090 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2091 { 2092 struct mlx4_en_priv *priv = netdev_priv(dev); 2093 struct mlx4_en_dev *mdev = priv->mdev; 2094 struct hwtstamp_config config; 2095 2096 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2097 return -EFAULT; 2098 2099 /* reserved for future extensions */ 2100 if (config.flags) 2101 return -EINVAL; 2102 2103 /* device doesn't support time stamping */ 2104 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2105 return -EINVAL; 2106 2107 /* TX HW timestamp */ 2108 switch (config.tx_type) { 2109 case HWTSTAMP_TX_OFF: 2110 case HWTSTAMP_TX_ON: 2111 break; 2112 default: 2113 return -ERANGE; 2114 } 2115 2116 /* RX HW timestamp */ 2117 switch (config.rx_filter) { 2118 case HWTSTAMP_FILTER_NONE: 2119 break; 2120 case HWTSTAMP_FILTER_ALL: 2121 case HWTSTAMP_FILTER_SOME: 2122 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2123 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2124 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2125 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2126 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2127 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2128 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2129 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2130 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2131 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2132 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2133 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2134 config.rx_filter = HWTSTAMP_FILTER_ALL; 2135 break; 2136 default: 2137 return -ERANGE; 2138 } 2139 2140 if (mlx4_en_reset_config(dev, config, dev->features)) { 2141 config.tx_type = HWTSTAMP_TX_OFF; 2142 config.rx_filter = HWTSTAMP_FILTER_NONE; 2143 } 2144 2145 return copy_to_user(ifr->ifr_data, &config, 2146 sizeof(config)) ? -EFAULT : 0; 2147 } 2148 2149 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2150 { 2151 struct mlx4_en_priv *priv = netdev_priv(dev); 2152 2153 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2154 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2155 } 2156 2157 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2158 { 2159 switch (cmd) { 2160 case SIOCSHWTSTAMP: 2161 return mlx4_en_hwtstamp_set(dev, ifr); 2162 case SIOCGHWTSTAMP: 2163 return mlx4_en_hwtstamp_get(dev, ifr); 2164 default: 2165 return -EOPNOTSUPP; 2166 } 2167 } 2168 2169 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev, 2170 netdev_features_t features) 2171 { 2172 struct mlx4_en_priv *en_priv = netdev_priv(netdev); 2173 struct mlx4_en_dev *mdev = en_priv->mdev; 2174 2175 /* Since there is no support for separate RX C-TAG/S-TAG vlan accel 2176 * enable/disable make sure S-TAG flag is always in same state as 2177 * C-TAG. 2178 */ 2179 if (features & NETIF_F_HW_VLAN_CTAG_RX && 2180 !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 2181 features |= NETIF_F_HW_VLAN_STAG_RX; 2182 else 2183 features &= ~NETIF_F_HW_VLAN_STAG_RX; 2184 2185 return features; 2186 } 2187 2188 static int mlx4_en_set_features(struct net_device *netdev, 2189 netdev_features_t features) 2190 { 2191 struct mlx4_en_priv *priv = netdev_priv(netdev); 2192 bool reset = false; 2193 int ret = 0; 2194 2195 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) { 2196 en_info(priv, "Turn %s RX-FCS\n", 2197 (features & NETIF_F_RXFCS) ? "ON" : "OFF"); 2198 reset = true; 2199 } 2200 2201 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) { 2202 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0; 2203 2204 en_info(priv, "Turn %s RX-ALL\n", 2205 ignore_fcs_value ? "ON" : "OFF"); 2206 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev, 2207 priv->port, ignore_fcs_value); 2208 if (ret) 2209 return ret; 2210 } 2211 2212 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 2213 en_info(priv, "Turn %s RX vlan strip offload\n", 2214 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF"); 2215 reset = true; 2216 } 2217 2218 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX)) 2219 en_info(priv, "Turn %s TX vlan strip offload\n", 2220 (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF"); 2221 2222 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX)) 2223 en_info(priv, "Turn %s TX S-VLAN strip offload\n", 2224 (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF"); 2225 2226 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) { 2227 en_info(priv, "Turn %s loopback\n", 2228 (features & NETIF_F_LOOPBACK) ? "ON" : "OFF"); 2229 mlx4_en_update_loopback_state(netdev, features); 2230 } 2231 2232 if (reset) { 2233 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config, 2234 features); 2235 if (ret) 2236 return ret; 2237 } 2238 2239 return 0; 2240 } 2241 2242 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2243 { 2244 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2245 struct mlx4_en_dev *mdev = en_priv->mdev; 2246 u64 mac_u64 = mlx4_mac_to_u64(mac); 2247 2248 if (!is_valid_ether_addr(mac)) 2249 return -EINVAL; 2250 2251 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2252 } 2253 2254 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) 2255 { 2256 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2257 struct mlx4_en_dev *mdev = en_priv->mdev; 2258 2259 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos); 2260 } 2261 2262 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, 2263 int max_tx_rate) 2264 { 2265 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2266 struct mlx4_en_dev *mdev = en_priv->mdev; 2267 2268 return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate, 2269 max_tx_rate); 2270 } 2271 2272 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2273 { 2274 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2275 struct mlx4_en_dev *mdev = en_priv->mdev; 2276 2277 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2278 } 2279 2280 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2281 { 2282 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2283 struct mlx4_en_dev *mdev = en_priv->mdev; 2284 2285 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2286 } 2287 2288 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2289 { 2290 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2291 struct mlx4_en_dev *mdev = en_priv->mdev; 2292 2293 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2294 } 2295 2296 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf, 2297 struct ifla_vf_stats *vf_stats) 2298 { 2299 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2300 struct mlx4_en_dev *mdev = en_priv->mdev; 2301 2302 return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats); 2303 } 2304 2305 #define PORT_ID_BYTE_LEN 8 2306 static int mlx4_en_get_phys_port_id(struct net_device *dev, 2307 struct netdev_phys_item_id *ppid) 2308 { 2309 struct mlx4_en_priv *priv = netdev_priv(dev); 2310 struct mlx4_dev *mdev = priv->mdev->dev; 2311 int i; 2312 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2313 2314 if (!phys_port_id) 2315 return -EOPNOTSUPP; 2316 2317 ppid->id_len = sizeof(phys_port_id); 2318 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2319 ppid->id[i] = phys_port_id & 0xff; 2320 phys_port_id >>= 8; 2321 } 2322 return 0; 2323 } 2324 2325 #ifdef CONFIG_MLX4_EN_VXLAN 2326 static void mlx4_en_add_vxlan_offloads(struct work_struct *work) 2327 { 2328 int ret; 2329 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2330 vxlan_add_task); 2331 2332 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port); 2333 if (ret) 2334 goto out; 2335 2336 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2337 VXLAN_STEER_BY_OUTER_MAC, 1); 2338 out: 2339 if (ret) { 2340 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2341 return; 2342 } 2343 2344 /* set offloads */ 2345 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2346 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL; 2347 priv->dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; 2348 priv->dev->features |= NETIF_F_GSO_UDP_TUNNEL; 2349 } 2350 2351 static void mlx4_en_del_vxlan_offloads(struct work_struct *work) 2352 { 2353 int ret; 2354 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2355 vxlan_del_task); 2356 /* unset offloads */ 2357 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM | 2358 NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL); 2359 priv->dev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL; 2360 priv->dev->features &= ~NETIF_F_GSO_UDP_TUNNEL; 2361 2362 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2363 VXLAN_STEER_BY_OUTER_MAC, 0); 2364 if (ret) 2365 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2366 2367 priv->vxlan_port = 0; 2368 } 2369 2370 static void mlx4_en_add_vxlan_port(struct net_device *dev, 2371 sa_family_t sa_family, __be16 port) 2372 { 2373 struct mlx4_en_priv *priv = netdev_priv(dev); 2374 __be16 current_port; 2375 2376 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2377 return; 2378 2379 if (sa_family == AF_INET6) 2380 return; 2381 2382 current_port = priv->vxlan_port; 2383 if (current_port && current_port != port) { 2384 en_warn(priv, "vxlan port %d configured, can't add port %d\n", 2385 ntohs(current_port), ntohs(port)); 2386 return; 2387 } 2388 2389 priv->vxlan_port = port; 2390 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task); 2391 } 2392 2393 static void mlx4_en_del_vxlan_port(struct net_device *dev, 2394 sa_family_t sa_family, __be16 port) 2395 { 2396 struct mlx4_en_priv *priv = netdev_priv(dev); 2397 __be16 current_port; 2398 2399 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2400 return; 2401 2402 if (sa_family == AF_INET6) 2403 return; 2404 2405 current_port = priv->vxlan_port; 2406 if (current_port != port) { 2407 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port)); 2408 return; 2409 } 2410 2411 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task); 2412 } 2413 2414 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb, 2415 struct net_device *dev, 2416 netdev_features_t features) 2417 { 2418 features = vlan_features_check(skb, features); 2419 return vxlan_features_check(skb, features); 2420 } 2421 #endif 2422 2423 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate) 2424 { 2425 struct mlx4_en_priv *priv = netdev_priv(dev); 2426 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index]; 2427 struct mlx4_update_qp_params params; 2428 int err; 2429 2430 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT)) 2431 return -EOPNOTSUPP; 2432 2433 /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */ 2434 if (maxrate >> 12) { 2435 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS; 2436 params.rate_val = maxrate / 1000; 2437 } else if (maxrate) { 2438 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS; 2439 params.rate_val = maxrate; 2440 } else { /* zero serves to revoke the QP rate-limitation */ 2441 params.rate_unit = 0; 2442 params.rate_val = 0; 2443 } 2444 2445 err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT, 2446 ¶ms); 2447 return err; 2448 } 2449 2450 static const struct net_device_ops mlx4_netdev_ops = { 2451 .ndo_open = mlx4_en_open, 2452 .ndo_stop = mlx4_en_close, 2453 .ndo_start_xmit = mlx4_en_xmit, 2454 .ndo_select_queue = mlx4_en_select_queue, 2455 .ndo_get_stats = mlx4_en_get_stats, 2456 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2457 .ndo_set_mac_address = mlx4_en_set_mac, 2458 .ndo_validate_addr = eth_validate_addr, 2459 .ndo_change_mtu = mlx4_en_change_mtu, 2460 .ndo_do_ioctl = mlx4_en_ioctl, 2461 .ndo_tx_timeout = mlx4_en_tx_timeout, 2462 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2463 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2464 #ifdef CONFIG_NET_POLL_CONTROLLER 2465 .ndo_poll_controller = mlx4_en_netpoll, 2466 #endif 2467 .ndo_set_features = mlx4_en_set_features, 2468 .ndo_fix_features = mlx4_en_fix_features, 2469 .ndo_setup_tc = mlx4_en_setup_tc, 2470 #ifdef CONFIG_RFS_ACCEL 2471 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2472 #endif 2473 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2474 #ifdef CONFIG_MLX4_EN_VXLAN 2475 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2476 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2477 .ndo_features_check = mlx4_en_features_check, 2478 #endif 2479 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2480 }; 2481 2482 static const struct net_device_ops mlx4_netdev_ops_master = { 2483 .ndo_open = mlx4_en_open, 2484 .ndo_stop = mlx4_en_close, 2485 .ndo_start_xmit = mlx4_en_xmit, 2486 .ndo_select_queue = mlx4_en_select_queue, 2487 .ndo_get_stats = mlx4_en_get_stats, 2488 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2489 .ndo_set_mac_address = mlx4_en_set_mac, 2490 .ndo_validate_addr = eth_validate_addr, 2491 .ndo_change_mtu = mlx4_en_change_mtu, 2492 .ndo_tx_timeout = mlx4_en_tx_timeout, 2493 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2494 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2495 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2496 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2497 .ndo_set_vf_rate = mlx4_en_set_vf_rate, 2498 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2499 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2500 .ndo_get_vf_stats = mlx4_en_get_vf_stats, 2501 .ndo_get_vf_config = mlx4_en_get_vf_config, 2502 #ifdef CONFIG_NET_POLL_CONTROLLER 2503 .ndo_poll_controller = mlx4_en_netpoll, 2504 #endif 2505 .ndo_set_features = mlx4_en_set_features, 2506 .ndo_fix_features = mlx4_en_fix_features, 2507 .ndo_setup_tc = mlx4_en_setup_tc, 2508 #ifdef CONFIG_RFS_ACCEL 2509 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2510 #endif 2511 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2512 #ifdef CONFIG_MLX4_EN_VXLAN 2513 .ndo_add_vxlan_port = mlx4_en_add_vxlan_port, 2514 .ndo_del_vxlan_port = mlx4_en_del_vxlan_port, 2515 .ndo_features_check = mlx4_en_features_check, 2516 #endif 2517 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2518 }; 2519 2520 struct mlx4_en_bond { 2521 struct work_struct work; 2522 struct mlx4_en_priv *priv; 2523 int is_bonded; 2524 struct mlx4_port_map port_map; 2525 }; 2526 2527 static void mlx4_en_bond_work(struct work_struct *work) 2528 { 2529 struct mlx4_en_bond *bond = container_of(work, 2530 struct mlx4_en_bond, 2531 work); 2532 int err = 0; 2533 struct mlx4_dev *dev = bond->priv->mdev->dev; 2534 2535 if (bond->is_bonded) { 2536 if (!mlx4_is_bonded(dev)) { 2537 err = mlx4_bond(dev); 2538 if (err) 2539 en_err(bond->priv, "Fail to bond device\n"); 2540 } 2541 if (!err) { 2542 err = mlx4_port_map_set(dev, &bond->port_map); 2543 if (err) 2544 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n", 2545 bond->port_map.port1, 2546 bond->port_map.port2, 2547 err); 2548 } 2549 } else if (mlx4_is_bonded(dev)) { 2550 err = mlx4_unbond(dev); 2551 if (err) 2552 en_err(bond->priv, "Fail to unbond device\n"); 2553 } 2554 dev_put(bond->priv->dev); 2555 kfree(bond); 2556 } 2557 2558 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded, 2559 u8 v2p_p1, u8 v2p_p2) 2560 { 2561 struct mlx4_en_bond *bond = NULL; 2562 2563 bond = kzalloc(sizeof(*bond), GFP_ATOMIC); 2564 if (!bond) 2565 return -ENOMEM; 2566 2567 INIT_WORK(&bond->work, mlx4_en_bond_work); 2568 bond->priv = priv; 2569 bond->is_bonded = is_bonded; 2570 bond->port_map.port1 = v2p_p1; 2571 bond->port_map.port2 = v2p_p2; 2572 dev_hold(priv->dev); 2573 queue_work(priv->mdev->workqueue, &bond->work); 2574 return 0; 2575 } 2576 2577 int mlx4_en_netdev_event(struct notifier_block *this, 2578 unsigned long event, void *ptr) 2579 { 2580 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 2581 u8 port = 0; 2582 struct mlx4_en_dev *mdev; 2583 struct mlx4_dev *dev; 2584 int i, num_eth_ports = 0; 2585 bool do_bond = true; 2586 struct mlx4_en_priv *priv; 2587 u8 v2p_port1 = 0; 2588 u8 v2p_port2 = 0; 2589 2590 if (!net_eq(dev_net(ndev), &init_net)) 2591 return NOTIFY_DONE; 2592 2593 mdev = container_of(this, struct mlx4_en_dev, nb); 2594 dev = mdev->dev; 2595 2596 /* Go into this mode only when two network devices set on two ports 2597 * of the same mlx4 device are slaves of the same bonding master 2598 */ 2599 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { 2600 ++num_eth_ports; 2601 if (!port && (mdev->pndev[i] == ndev)) 2602 port = i; 2603 mdev->upper[i] = mdev->pndev[i] ? 2604 netdev_master_upper_dev_get(mdev->pndev[i]) : NULL; 2605 /* condition not met: network device is a slave */ 2606 if (!mdev->upper[i]) 2607 do_bond = false; 2608 if (num_eth_ports < 2) 2609 continue; 2610 /* condition not met: same master */ 2611 if (mdev->upper[i] != mdev->upper[i-1]) 2612 do_bond = false; 2613 } 2614 /* condition not met: 2 salves */ 2615 do_bond = (num_eth_ports == 2) ? do_bond : false; 2616 2617 /* handle only events that come with enough info */ 2618 if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port) 2619 return NOTIFY_DONE; 2620 2621 priv = netdev_priv(ndev); 2622 if (do_bond) { 2623 struct netdev_notifier_bonding_info *notifier_info = ptr; 2624 struct netdev_bonding_info *bonding_info = 2625 ¬ifier_info->bonding_info; 2626 2627 /* required mode 1, 2 or 4 */ 2628 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) && 2629 (bonding_info->master.bond_mode != BOND_MODE_XOR) && 2630 (bonding_info->master.bond_mode != BOND_MODE_8023AD)) 2631 do_bond = false; 2632 2633 /* require exactly 2 slaves */ 2634 if (bonding_info->master.num_slaves != 2) 2635 do_bond = false; 2636 2637 /* calc v2p */ 2638 if (do_bond) { 2639 if (bonding_info->master.bond_mode == 2640 BOND_MODE_ACTIVEBACKUP) { 2641 /* in active-backup mode virtual ports are 2642 * mapped to the physical port of the active 2643 * slave */ 2644 if (bonding_info->slave.state == 2645 BOND_STATE_BACKUP) { 2646 if (port == 1) { 2647 v2p_port1 = 2; 2648 v2p_port2 = 2; 2649 } else { 2650 v2p_port1 = 1; 2651 v2p_port2 = 1; 2652 } 2653 } else { /* BOND_STATE_ACTIVE */ 2654 if (port == 1) { 2655 v2p_port1 = 1; 2656 v2p_port2 = 1; 2657 } else { 2658 v2p_port1 = 2; 2659 v2p_port2 = 2; 2660 } 2661 } 2662 } else { /* Active-Active */ 2663 /* in active-active mode a virtual port is 2664 * mapped to the native physical port if and only 2665 * if the physical port is up */ 2666 __s8 link = bonding_info->slave.link; 2667 2668 if (port == 1) 2669 v2p_port2 = 2; 2670 else 2671 v2p_port1 = 1; 2672 if ((link == BOND_LINK_UP) || 2673 (link == BOND_LINK_FAIL)) { 2674 if (port == 1) 2675 v2p_port1 = 1; 2676 else 2677 v2p_port2 = 2; 2678 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */ 2679 if (port == 1) 2680 v2p_port1 = 2; 2681 else 2682 v2p_port2 = 1; 2683 } 2684 } 2685 } 2686 } 2687 2688 mlx4_en_queue_bond_work(priv, do_bond, 2689 v2p_port1, v2p_port2); 2690 2691 return NOTIFY_DONE; 2692 } 2693 2694 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev, 2695 struct mlx4_en_stats_bitmap *stats_bitmap, 2696 u8 rx_ppp, u8 rx_pause, 2697 u8 tx_ppp, u8 tx_pause) 2698 { 2699 int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS; 2700 2701 if (!mlx4_is_slave(dev) && 2702 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) { 2703 mutex_lock(&stats_bitmap->mutex); 2704 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS); 2705 2706 if (rx_ppp) 2707 bitmap_set(stats_bitmap->bitmap, last_i, 2708 NUM_FLOW_PRIORITY_STATS_RX); 2709 last_i += NUM_FLOW_PRIORITY_STATS_RX; 2710 2711 if (rx_pause && !(rx_ppp)) 2712 bitmap_set(stats_bitmap->bitmap, last_i, 2713 NUM_FLOW_STATS_RX); 2714 last_i += NUM_FLOW_STATS_RX; 2715 2716 if (tx_ppp) 2717 bitmap_set(stats_bitmap->bitmap, last_i, 2718 NUM_FLOW_PRIORITY_STATS_TX); 2719 last_i += NUM_FLOW_PRIORITY_STATS_TX; 2720 2721 if (tx_pause && !(tx_ppp)) 2722 bitmap_set(stats_bitmap->bitmap, last_i, 2723 NUM_FLOW_STATS_TX); 2724 last_i += NUM_FLOW_STATS_TX; 2725 2726 mutex_unlock(&stats_bitmap->mutex); 2727 } 2728 } 2729 2730 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev, 2731 struct mlx4_en_stats_bitmap *stats_bitmap, 2732 u8 rx_ppp, u8 rx_pause, 2733 u8 tx_ppp, u8 tx_pause) 2734 { 2735 int last_i = 0; 2736 2737 mutex_init(&stats_bitmap->mutex); 2738 bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS); 2739 2740 if (mlx4_is_slave(dev)) { 2741 bitmap_set(stats_bitmap->bitmap, last_i + 2742 MLX4_FIND_NETDEV_STAT(rx_packets), 1); 2743 bitmap_set(stats_bitmap->bitmap, last_i + 2744 MLX4_FIND_NETDEV_STAT(tx_packets), 1); 2745 bitmap_set(stats_bitmap->bitmap, last_i + 2746 MLX4_FIND_NETDEV_STAT(rx_bytes), 1); 2747 bitmap_set(stats_bitmap->bitmap, last_i + 2748 MLX4_FIND_NETDEV_STAT(tx_bytes), 1); 2749 bitmap_set(stats_bitmap->bitmap, last_i + 2750 MLX4_FIND_NETDEV_STAT(rx_dropped), 1); 2751 bitmap_set(stats_bitmap->bitmap, last_i + 2752 MLX4_FIND_NETDEV_STAT(tx_dropped), 1); 2753 } else { 2754 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS); 2755 } 2756 last_i += NUM_MAIN_STATS; 2757 2758 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS); 2759 last_i += NUM_PORT_STATS; 2760 2761 if (mlx4_is_master(dev)) 2762 bitmap_set(stats_bitmap->bitmap, last_i, 2763 NUM_PF_STATS); 2764 last_i += NUM_PF_STATS; 2765 2766 mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap, 2767 rx_ppp, rx_pause, 2768 tx_ppp, tx_pause); 2769 last_i += NUM_FLOW_STATS; 2770 2771 if (!mlx4_is_slave(dev)) 2772 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS); 2773 } 2774 2775 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 2776 struct mlx4_en_port_profile *prof) 2777 { 2778 struct net_device *dev; 2779 struct mlx4_en_priv *priv; 2780 int i; 2781 int err; 2782 2783 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 2784 MAX_TX_RINGS, MAX_RX_RINGS); 2785 if (dev == NULL) 2786 return -ENOMEM; 2787 2788 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 2789 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 2790 2791 SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev); 2792 dev->dev_port = port - 1; 2793 2794 /* 2795 * Initialize driver private data 2796 */ 2797 2798 priv = netdev_priv(dev); 2799 memset(priv, 0, sizeof(struct mlx4_en_priv)); 2800 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 2801 spin_lock_init(&priv->stats_lock); 2802 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 2803 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 2804 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 2805 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 2806 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 2807 #ifdef CONFIG_MLX4_EN_VXLAN 2808 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads); 2809 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads); 2810 #endif 2811 #ifdef CONFIG_RFS_ACCEL 2812 INIT_LIST_HEAD(&priv->filters); 2813 spin_lock_init(&priv->filters_lock); 2814 #endif 2815 2816 priv->dev = dev; 2817 priv->mdev = mdev; 2818 priv->ddev = &mdev->pdev->dev; 2819 priv->prof = prof; 2820 priv->port = port; 2821 priv->port_up = false; 2822 priv->flags = prof->flags; 2823 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME; 2824 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 2825 MLX4_WQE_CTRL_SOLICITED); 2826 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 2827 priv->tx_ring_num = prof->tx_ring_num; 2828 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK; 2829 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key)); 2830 2831 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 2832 GFP_KERNEL); 2833 if (!priv->tx_ring) { 2834 err = -ENOMEM; 2835 goto out; 2836 } 2837 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 2838 GFP_KERNEL); 2839 if (!priv->tx_cq) { 2840 err = -ENOMEM; 2841 goto out; 2842 } 2843 priv->rx_ring_num = prof->rx_ring_num; 2844 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 2845 priv->cqe_size = mdev->dev->caps.cqe_size; 2846 priv->mac_index = -1; 2847 priv->msg_enable = MLX4_EN_MSG_LEVEL; 2848 #ifdef CONFIG_MLX4_EN_DCB 2849 if (!mlx4_is_slave(priv->mdev->dev)) { 2850 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) { 2851 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 2852 } else { 2853 en_info(priv, "enabling only PFC DCB ops\n"); 2854 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 2855 } 2856 } 2857 #endif 2858 2859 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 2860 INIT_HLIST_HEAD(&priv->mac_hash[i]); 2861 2862 /* Query for default mac and max mtu */ 2863 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 2864 2865 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] & 2866 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP) 2867 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP; 2868 2869 /* Set default MAC */ 2870 dev->addr_len = ETH_ALEN; 2871 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 2872 if (!is_valid_ether_addr(dev->dev_addr)) { 2873 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 2874 priv->port, dev->dev_addr); 2875 err = -EINVAL; 2876 goto out; 2877 } else if (mlx4_is_slave(priv->mdev->dev) && 2878 (priv->mdev->dev->port_random_macs & 1 << priv->port)) { 2879 /* Random MAC was assigned in mlx4_slave_cap 2880 * in mlx4_core module 2881 */ 2882 dev->addr_assign_type |= NET_ADDR_RANDOM; 2883 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 2884 } 2885 2886 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac)); 2887 2888 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2889 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2890 err = mlx4_en_alloc_resources(priv); 2891 if (err) 2892 goto out; 2893 2894 /* Initialize time stamping config */ 2895 priv->hwtstamp_config.flags = 0; 2896 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 2897 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 2898 2899 /* Allocate page for receive rings */ 2900 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 2901 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE); 2902 if (err) { 2903 en_err(priv, "Failed to allocate page for rx qps\n"); 2904 goto out; 2905 } 2906 priv->allocated = 1; 2907 2908 /* 2909 * Initialize netdev entry points 2910 */ 2911 if (mlx4_is_master(priv->mdev->dev)) 2912 dev->netdev_ops = &mlx4_netdev_ops_master; 2913 else 2914 dev->netdev_ops = &mlx4_netdev_ops; 2915 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 2916 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 2917 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 2918 2919 dev->ethtool_ops = &mlx4_en_ethtool_ops; 2920 2921 /* 2922 * Set driver features 2923 */ 2924 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2925 if (mdev->LSO_support) 2926 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2927 2928 dev->vlan_features = dev->hw_features; 2929 2930 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 2931 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 2932 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 2933 NETIF_F_HW_VLAN_CTAG_FILTER; 2934 dev->hw_features |= NETIF_F_LOOPBACK | 2935 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 2936 2937 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) { 2938 dev->features |= NETIF_F_HW_VLAN_STAG_RX | 2939 NETIF_F_HW_VLAN_STAG_FILTER; 2940 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX; 2941 } 2942 2943 if (mlx4_is_slave(mdev->dev)) { 2944 int phv; 2945 2946 err = get_phv_bit(mdev->dev, port, &phv); 2947 if (!err && phv) { 2948 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 2949 priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV; 2950 } 2951 } else { 2952 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN && 2953 !(mdev->dev->caps.flags2 & 2954 MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 2955 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 2956 } 2957 2958 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) 2959 dev->hw_features |= NETIF_F_RXFCS; 2960 2961 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS) 2962 dev->hw_features |= NETIF_F_RXALL; 2963 2964 if (mdev->dev->caps.steering_mode == 2965 MLX4_STEERING_MODE_DEVICE_MANAGED && 2966 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC) 2967 dev->hw_features |= NETIF_F_NTUPLE; 2968 2969 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 2970 dev->priv_flags |= IFF_UNICAST_FLT; 2971 2972 /* Setting a default hash function value */ 2973 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) { 2974 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 2975 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) { 2976 priv->rss_hash_fn = ETH_RSS_HASH_XOR; 2977 } else { 2978 en_warn(priv, 2979 "No RSS hash capabilities exposed, using Toeplitz\n"); 2980 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 2981 } 2982 2983 mdev->pndev[port] = dev; 2984 mdev->upper[port] = NULL; 2985 2986 netif_carrier_off(dev); 2987 mlx4_en_set_default_moderation(priv); 2988 2989 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 2990 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 2991 2992 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 2993 2994 /* Configure port */ 2995 mlx4_en_calc_rx_buf(dev); 2996 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 2997 priv->rx_skb_size + ETH_FCS_LEN, 2998 prof->tx_pause, prof->tx_ppp, 2999 prof->rx_pause, prof->rx_ppp); 3000 if (err) { 3001 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 3002 priv->port, err); 3003 goto out; 3004 } 3005 3006 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 3007 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 3008 if (err) { 3009 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 3010 err); 3011 goto out; 3012 } 3013 } 3014 3015 /* Init port */ 3016 en_warn(priv, "Initializing port\n"); 3017 err = mlx4_INIT_PORT(mdev->dev, priv->port); 3018 if (err) { 3019 en_err(priv, "Failed Initializing port\n"); 3020 goto out; 3021 } 3022 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 3023 3024 /* Initialize time stamp mechanism */ 3025 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 3026 mlx4_en_init_timestamp(mdev); 3027 3028 queue_delayed_work(mdev->workqueue, &priv->service_task, 3029 SERVICE_TASK_DELAY); 3030 3031 mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap, 3032 mdev->profile.prof[priv->port].rx_ppp, 3033 mdev->profile.prof[priv->port].rx_pause, 3034 mdev->profile.prof[priv->port].tx_ppp, 3035 mdev->profile.prof[priv->port].tx_pause); 3036 3037 err = register_netdev(dev); 3038 if (err) { 3039 en_err(priv, "Netdev registration failed for port %d\n", port); 3040 goto out; 3041 } 3042 3043 priv->registered = 1; 3044 3045 return 0; 3046 3047 out: 3048 mlx4_en_destroy_netdev(dev); 3049 return err; 3050 } 3051 3052 int mlx4_en_reset_config(struct net_device *dev, 3053 struct hwtstamp_config ts_config, 3054 netdev_features_t features) 3055 { 3056 struct mlx4_en_priv *priv = netdev_priv(dev); 3057 struct mlx4_en_dev *mdev = priv->mdev; 3058 int port_up = 0; 3059 int err = 0; 3060 3061 if (priv->hwtstamp_config.tx_type == ts_config.tx_type && 3062 priv->hwtstamp_config.rx_filter == ts_config.rx_filter && 3063 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3064 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) 3065 return 0; /* Nothing to change */ 3066 3067 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3068 (features & NETIF_F_HW_VLAN_CTAG_RX) && 3069 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) { 3070 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n"); 3071 return -EINVAL; 3072 } 3073 3074 mutex_lock(&mdev->state_lock); 3075 if (priv->port_up) { 3076 port_up = 1; 3077 mlx4_en_stop_port(dev, 1); 3078 } 3079 3080 mlx4_en_free_resources(priv); 3081 3082 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n", 3083 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX)); 3084 3085 priv->hwtstamp_config.tx_type = ts_config.tx_type; 3086 priv->hwtstamp_config.rx_filter = ts_config.rx_filter; 3087 3088 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 3089 if (features & NETIF_F_HW_VLAN_CTAG_RX) 3090 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3091 else 3092 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3093 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) { 3094 /* RX time-stamping is OFF, update the RX vlan offload 3095 * to the latest wanted state 3096 */ 3097 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX) 3098 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3099 else 3100 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3101 } 3102 3103 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) { 3104 if (features & NETIF_F_RXFCS) 3105 dev->features |= NETIF_F_RXFCS; 3106 else 3107 dev->features &= ~NETIF_F_RXFCS; 3108 } 3109 3110 /* RX vlan offload and RX time-stamping can't co-exist ! 3111 * Regardless of the caller's choice, 3112 * Turn Off RX vlan offload in case of time-stamping is ON 3113 */ 3114 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) { 3115 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 3116 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n"); 3117 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3118 } 3119 3120 err = mlx4_en_alloc_resources(priv); 3121 if (err) { 3122 en_err(priv, "Failed reallocating port resources\n"); 3123 goto out; 3124 } 3125 if (port_up) { 3126 err = mlx4_en_start_port(dev); 3127 if (err) 3128 en_err(priv, "Failed starting port\n"); 3129 } 3130 3131 out: 3132 mutex_unlock(&mdev->state_lock); 3133 netdev_features_change(dev); 3134 return err; 3135 } 3136