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/bpf.h> 35 #include <linux/etherdevice.h> 36 #include <linux/tcp.h> 37 #include <linux/if_vlan.h> 38 #include <linux/delay.h> 39 #include <linux/slab.h> 40 #include <linux/hash.h> 41 #include <net/ip.h> 42 #include <net/busy_poll.h> 43 #include <net/vxlan.h> 44 #include <net/devlink.h> 45 46 #include <linux/mlx4/driver.h> 47 #include <linux/mlx4/device.h> 48 #include <linux/mlx4/cmd.h> 49 #include <linux/mlx4/cq.h> 50 51 #include "mlx4_en.h" 52 #include "en_port.h" 53 54 int mlx4_en_setup_tc(struct net_device *dev, u8 up) 55 { 56 struct mlx4_en_priv *priv = netdev_priv(dev); 57 int i; 58 unsigned int offset = 0; 59 60 if (up && up != MLX4_EN_NUM_UP) 61 return -EINVAL; 62 63 netdev_set_num_tc(dev, up); 64 65 /* Partition Tx queues evenly amongst UP's */ 66 for (i = 0; i < up; i++) { 67 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset); 68 offset += priv->num_tx_rings_p_up; 69 } 70 71 #ifdef CONFIG_MLX4_EN_DCB 72 if (!mlx4_is_slave(priv->mdev->dev)) { 73 if (up) { 74 if (priv->dcbx_cap) 75 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED; 76 } else { 77 priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED; 78 priv->cee_config.pfc_state = false; 79 } 80 } 81 #endif /* CONFIG_MLX4_EN_DCB */ 82 83 return 0; 84 } 85 86 static int __mlx4_en_setup_tc(struct net_device *dev, u32 handle, __be16 proto, 87 struct tc_to_netdev *tc) 88 { 89 if (tc->type != TC_SETUP_MQPRIO) 90 return -EINVAL; 91 92 return mlx4_en_setup_tc(dev, tc->tc); 93 } 94 95 #ifdef CONFIG_RFS_ACCEL 96 97 struct mlx4_en_filter { 98 struct list_head next; 99 struct work_struct work; 100 101 u8 ip_proto; 102 __be32 src_ip; 103 __be32 dst_ip; 104 __be16 src_port; 105 __be16 dst_port; 106 107 int rxq_index; 108 struct mlx4_en_priv *priv; 109 u32 flow_id; /* RFS infrastructure id */ 110 int id; /* mlx4_en driver id */ 111 u64 reg_id; /* Flow steering API id */ 112 u8 activated; /* Used to prevent expiry before filter 113 * is attached 114 */ 115 struct hlist_node filter_chain; 116 }; 117 118 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv); 119 120 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto) 121 { 122 switch (ip_proto) { 123 case IPPROTO_UDP: 124 return MLX4_NET_TRANS_RULE_ID_UDP; 125 case IPPROTO_TCP: 126 return MLX4_NET_TRANS_RULE_ID_TCP; 127 default: 128 return MLX4_NET_TRANS_RULE_NUM; 129 } 130 }; 131 132 /* Must not acquire state_lock, as its corresponding work_sync 133 * is done under it. 134 */ 135 static void mlx4_en_filter_work(struct work_struct *work) 136 { 137 struct mlx4_en_filter *filter = container_of(work, 138 struct mlx4_en_filter, 139 work); 140 struct mlx4_en_priv *priv = filter->priv; 141 struct mlx4_spec_list spec_tcp_udp = { 142 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto), 143 { 144 .tcp_udp = { 145 .dst_port = filter->dst_port, 146 .dst_port_msk = (__force __be16)-1, 147 .src_port = filter->src_port, 148 .src_port_msk = (__force __be16)-1, 149 }, 150 }, 151 }; 152 struct mlx4_spec_list spec_ip = { 153 .id = MLX4_NET_TRANS_RULE_ID_IPV4, 154 { 155 .ipv4 = { 156 .dst_ip = filter->dst_ip, 157 .dst_ip_msk = (__force __be32)-1, 158 .src_ip = filter->src_ip, 159 .src_ip_msk = (__force __be32)-1, 160 }, 161 }, 162 }; 163 struct mlx4_spec_list spec_eth = { 164 .id = MLX4_NET_TRANS_RULE_ID_ETH, 165 }; 166 struct mlx4_net_trans_rule rule = { 167 .list = LIST_HEAD_INIT(rule.list), 168 .queue_mode = MLX4_NET_TRANS_Q_LIFO, 169 .exclusive = 1, 170 .allow_loopback = 1, 171 .promisc_mode = MLX4_FS_REGULAR, 172 .port = priv->port, 173 .priority = MLX4_DOMAIN_RFS, 174 }; 175 int rc; 176 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 177 178 if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) { 179 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n", 180 filter->ip_proto); 181 goto ignore; 182 } 183 list_add_tail(&spec_eth.list, &rule.list); 184 list_add_tail(&spec_ip.list, &rule.list); 185 list_add_tail(&spec_tcp_udp.list, &rule.list); 186 187 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn; 188 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN); 189 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 190 191 filter->activated = 0; 192 193 if (filter->reg_id) { 194 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 195 if (rc && rc != -ENOENT) 196 en_err(priv, "Error detaching flow. rc = %d\n", rc); 197 } 198 199 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id); 200 if (rc) 201 en_err(priv, "Error attaching flow. err = %d\n", rc); 202 203 ignore: 204 mlx4_en_filter_rfs_expire(priv); 205 206 filter->activated = 1; 207 } 208 209 static inline struct hlist_head * 210 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 211 __be16 src_port, __be16 dst_port) 212 { 213 unsigned long l; 214 int bucket_idx; 215 216 l = (__force unsigned long)src_port | 217 ((__force unsigned long)dst_port << 2); 218 l ^= (__force unsigned long)(src_ip ^ dst_ip); 219 220 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT); 221 222 return &priv->filter_hash[bucket_idx]; 223 } 224 225 static struct mlx4_en_filter * 226 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip, 227 __be32 dst_ip, u8 ip_proto, __be16 src_port, 228 __be16 dst_port, u32 flow_id) 229 { 230 struct mlx4_en_filter *filter = NULL; 231 232 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC); 233 if (!filter) 234 return NULL; 235 236 filter->priv = priv; 237 filter->rxq_index = rxq_index; 238 INIT_WORK(&filter->work, mlx4_en_filter_work); 239 240 filter->src_ip = src_ip; 241 filter->dst_ip = dst_ip; 242 filter->ip_proto = ip_proto; 243 filter->src_port = src_port; 244 filter->dst_port = dst_port; 245 246 filter->flow_id = flow_id; 247 248 filter->id = priv->last_filter_id++ % RPS_NO_FILTER; 249 250 list_add_tail(&filter->next, &priv->filters); 251 hlist_add_head(&filter->filter_chain, 252 filter_hash_bucket(priv, src_ip, dst_ip, src_port, 253 dst_port)); 254 255 return filter; 256 } 257 258 static void mlx4_en_filter_free(struct mlx4_en_filter *filter) 259 { 260 struct mlx4_en_priv *priv = filter->priv; 261 int rc; 262 263 list_del(&filter->next); 264 265 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 266 if (rc && rc != -ENOENT) 267 en_err(priv, "Error detaching flow. rc = %d\n", rc); 268 269 kfree(filter); 270 } 271 272 static inline struct mlx4_en_filter * 273 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 274 u8 ip_proto, __be16 src_port, __be16 dst_port) 275 { 276 struct mlx4_en_filter *filter; 277 struct mlx4_en_filter *ret = NULL; 278 279 hlist_for_each_entry(filter, 280 filter_hash_bucket(priv, src_ip, dst_ip, 281 src_port, dst_port), 282 filter_chain) { 283 if (filter->src_ip == src_ip && 284 filter->dst_ip == dst_ip && 285 filter->ip_proto == ip_proto && 286 filter->src_port == src_port && 287 filter->dst_port == dst_port) { 288 ret = filter; 289 break; 290 } 291 } 292 293 return ret; 294 } 295 296 static int 297 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 298 u16 rxq_index, u32 flow_id) 299 { 300 struct mlx4_en_priv *priv = netdev_priv(net_dev); 301 struct mlx4_en_filter *filter; 302 const struct iphdr *ip; 303 const __be16 *ports; 304 u8 ip_proto; 305 __be32 src_ip; 306 __be32 dst_ip; 307 __be16 src_port; 308 __be16 dst_port; 309 int nhoff = skb_network_offset(skb); 310 int ret = 0; 311 312 if (skb->protocol != htons(ETH_P_IP)) 313 return -EPROTONOSUPPORT; 314 315 ip = (const struct iphdr *)(skb->data + nhoff); 316 if (ip_is_fragment(ip)) 317 return -EPROTONOSUPPORT; 318 319 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP)) 320 return -EPROTONOSUPPORT; 321 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); 322 323 ip_proto = ip->protocol; 324 src_ip = ip->saddr; 325 dst_ip = ip->daddr; 326 src_port = ports[0]; 327 dst_port = ports[1]; 328 329 spin_lock_bh(&priv->filters_lock); 330 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto, 331 src_port, dst_port); 332 if (filter) { 333 if (filter->rxq_index == rxq_index) 334 goto out; 335 336 filter->rxq_index = rxq_index; 337 } else { 338 filter = mlx4_en_filter_alloc(priv, rxq_index, 339 src_ip, dst_ip, ip_proto, 340 src_port, dst_port, flow_id); 341 if (!filter) { 342 ret = -ENOMEM; 343 goto err; 344 } 345 } 346 347 queue_work(priv->mdev->workqueue, &filter->work); 348 349 out: 350 ret = filter->id; 351 err: 352 spin_unlock_bh(&priv->filters_lock); 353 354 return ret; 355 } 356 357 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv) 358 { 359 struct mlx4_en_filter *filter, *tmp; 360 LIST_HEAD(del_list); 361 362 spin_lock_bh(&priv->filters_lock); 363 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 364 list_move(&filter->next, &del_list); 365 hlist_del(&filter->filter_chain); 366 } 367 spin_unlock_bh(&priv->filters_lock); 368 369 list_for_each_entry_safe(filter, tmp, &del_list, next) { 370 cancel_work_sync(&filter->work); 371 mlx4_en_filter_free(filter); 372 } 373 } 374 375 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv) 376 { 377 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL; 378 LIST_HEAD(del_list); 379 int i = 0; 380 381 spin_lock_bh(&priv->filters_lock); 382 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 383 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA) 384 break; 385 386 if (filter->activated && 387 !work_pending(&filter->work) && 388 rps_may_expire_flow(priv->dev, 389 filter->rxq_index, filter->flow_id, 390 filter->id)) { 391 list_move(&filter->next, &del_list); 392 hlist_del(&filter->filter_chain); 393 } else 394 last_filter = filter; 395 396 i++; 397 } 398 399 if (last_filter && (&last_filter->next != priv->filters.next)) 400 list_move(&priv->filters, &last_filter->next); 401 402 spin_unlock_bh(&priv->filters_lock); 403 404 list_for_each_entry_safe(filter, tmp, &del_list, next) 405 mlx4_en_filter_free(filter); 406 } 407 #endif 408 409 static int mlx4_en_vlan_rx_add_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 int idx; 416 417 en_dbg(HW, priv, "adding VLAN:%d\n", vid); 418 419 set_bit(vid, priv->active_vlans); 420 421 /* Add VID to port VLAN filter */ 422 mutex_lock(&mdev->state_lock); 423 if (mdev->device_up && priv->port_up) { 424 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 425 if (err) { 426 en_err(priv, "Failed configuring VLAN filter\n"); 427 goto out; 428 } 429 } 430 err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx); 431 if (err) 432 en_dbg(HW, priv, "Failed adding vlan %d\n", vid); 433 434 out: 435 mutex_unlock(&mdev->state_lock); 436 return err; 437 } 438 439 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, 440 __be16 proto, u16 vid) 441 { 442 struct mlx4_en_priv *priv = netdev_priv(dev); 443 struct mlx4_en_dev *mdev = priv->mdev; 444 int err = 0; 445 446 en_dbg(HW, priv, "Killing VID:%d\n", vid); 447 448 clear_bit(vid, priv->active_vlans); 449 450 /* Remove VID from port VLAN filter */ 451 mutex_lock(&mdev->state_lock); 452 mlx4_unregister_vlan(mdev->dev, priv->port, vid); 453 454 if (mdev->device_up && priv->port_up) { 455 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 456 if (err) 457 en_err(priv, "Failed configuring VLAN filter\n"); 458 } 459 mutex_unlock(&mdev->state_lock); 460 461 return err; 462 } 463 464 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) 465 { 466 int i; 467 for (i = ETH_ALEN - 1; i >= 0; --i) { 468 dst_mac[i] = src_mac & 0xff; 469 src_mac >>= 8; 470 } 471 memset(&dst_mac[ETH_ALEN], 0, 2); 472 } 473 474 475 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr, 476 int qpn, u64 *reg_id) 477 { 478 int err; 479 480 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 481 priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 482 return 0; /* do nothing */ 483 484 err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn, 485 MLX4_DOMAIN_NIC, reg_id); 486 if (err) { 487 en_err(priv, "failed to add vxlan steering rule, err %d\n", err); 488 return err; 489 } 490 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id); 491 return 0; 492 } 493 494 495 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv, 496 unsigned char *mac, int *qpn, u64 *reg_id) 497 { 498 struct mlx4_en_dev *mdev = priv->mdev; 499 struct mlx4_dev *dev = mdev->dev; 500 int err; 501 502 switch (dev->caps.steering_mode) { 503 case MLX4_STEERING_MODE_B0: { 504 struct mlx4_qp qp; 505 u8 gid[16] = {0}; 506 507 qp.qpn = *qpn; 508 memcpy(&gid[10], mac, ETH_ALEN); 509 gid[5] = priv->port; 510 511 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH); 512 break; 513 } 514 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 515 struct mlx4_spec_list spec_eth = { {NULL} }; 516 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 517 518 struct mlx4_net_trans_rule rule = { 519 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 520 .exclusive = 0, 521 .allow_loopback = 1, 522 .promisc_mode = MLX4_FS_REGULAR, 523 .priority = MLX4_DOMAIN_NIC, 524 }; 525 526 rule.port = priv->port; 527 rule.qpn = *qpn; 528 INIT_LIST_HEAD(&rule.list); 529 530 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH; 531 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN); 532 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 533 list_add_tail(&spec_eth.list, &rule.list); 534 535 err = mlx4_flow_attach(dev, &rule, reg_id); 536 break; 537 } 538 default: 539 return -EINVAL; 540 } 541 if (err) 542 en_warn(priv, "Failed Attaching Unicast\n"); 543 544 return err; 545 } 546 547 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv, 548 unsigned char *mac, int qpn, u64 reg_id) 549 { 550 struct mlx4_en_dev *mdev = priv->mdev; 551 struct mlx4_dev *dev = mdev->dev; 552 553 switch (dev->caps.steering_mode) { 554 case MLX4_STEERING_MODE_B0: { 555 struct mlx4_qp qp; 556 u8 gid[16] = {0}; 557 558 qp.qpn = qpn; 559 memcpy(&gid[10], mac, ETH_ALEN); 560 gid[5] = priv->port; 561 562 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH); 563 break; 564 } 565 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 566 mlx4_flow_detach(dev, reg_id); 567 break; 568 } 569 default: 570 en_err(priv, "Invalid steering mode.\n"); 571 } 572 } 573 574 static int mlx4_en_get_qp(struct mlx4_en_priv *priv) 575 { 576 struct mlx4_en_dev *mdev = priv->mdev; 577 struct mlx4_dev *dev = mdev->dev; 578 int index = 0; 579 int err = 0; 580 int *qpn = &priv->base_qpn; 581 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 582 583 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n", 584 priv->dev->dev_addr); 585 index = mlx4_register_mac(dev, priv->port, mac); 586 if (index < 0) { 587 err = index; 588 en_err(priv, "Failed adding MAC: %pM\n", 589 priv->dev->dev_addr); 590 return err; 591 } 592 593 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 594 int base_qpn = mlx4_get_base_qpn(dev, priv->port); 595 *qpn = base_qpn + index; 596 return 0; 597 } 598 599 err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP); 600 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); 601 if (err) { 602 en_err(priv, "Failed to reserve qp for mac registration\n"); 603 mlx4_unregister_mac(dev, priv->port, mac); 604 return err; 605 } 606 607 return 0; 608 } 609 610 static void mlx4_en_put_qp(struct mlx4_en_priv *priv) 611 { 612 struct mlx4_en_dev *mdev = priv->mdev; 613 struct mlx4_dev *dev = mdev->dev; 614 int qpn = priv->base_qpn; 615 616 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 617 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 618 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 619 priv->dev->dev_addr); 620 mlx4_unregister_mac(dev, priv->port, mac); 621 } else { 622 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", 623 priv->port, qpn); 624 mlx4_qp_release_range(dev, qpn, 1); 625 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 626 } 627 } 628 629 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, 630 unsigned char *new_mac, unsigned char *prev_mac) 631 { 632 struct mlx4_en_dev *mdev = priv->mdev; 633 struct mlx4_dev *dev = mdev->dev; 634 int err = 0; 635 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac); 636 637 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { 638 struct hlist_head *bucket; 639 unsigned int mac_hash; 640 struct mlx4_mac_entry *entry; 641 struct hlist_node *tmp; 642 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac); 643 644 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; 645 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 646 if (ether_addr_equal_64bits(entry->mac, prev_mac)) { 647 mlx4_en_uc_steer_release(priv, entry->mac, 648 qpn, entry->reg_id); 649 mlx4_unregister_mac(dev, priv->port, 650 prev_mac_u64); 651 hlist_del_rcu(&entry->hlist); 652 synchronize_rcu(); 653 memcpy(entry->mac, new_mac, ETH_ALEN); 654 entry->reg_id = 0; 655 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; 656 hlist_add_head_rcu(&entry->hlist, 657 &priv->mac_hash[mac_hash]); 658 mlx4_register_mac(dev, priv->port, new_mac_u64); 659 err = mlx4_en_uc_steer_add(priv, new_mac, 660 &qpn, 661 &entry->reg_id); 662 if (err) 663 return err; 664 if (priv->tunnel_reg_id) { 665 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 666 priv->tunnel_reg_id = 0; 667 } 668 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn, 669 &priv->tunnel_reg_id); 670 return err; 671 } 672 } 673 return -EINVAL; 674 } 675 676 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); 677 } 678 679 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv, 680 unsigned char new_mac[ETH_ALEN + 2]) 681 { 682 int err = 0; 683 684 if (priv->port_up) { 685 /* Remove old MAC and insert the new one */ 686 err = mlx4_en_replace_mac(priv, priv->base_qpn, 687 new_mac, priv->current_mac); 688 if (err) 689 en_err(priv, "Failed changing HW MAC address\n"); 690 } else 691 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); 692 693 if (!err) 694 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac)); 695 696 return err; 697 } 698 699 static int mlx4_en_set_mac(struct net_device *dev, void *addr) 700 { 701 struct mlx4_en_priv *priv = netdev_priv(dev); 702 struct mlx4_en_dev *mdev = priv->mdev; 703 struct sockaddr *saddr = addr; 704 unsigned char new_mac[ETH_ALEN + 2]; 705 int err; 706 707 if (!is_valid_ether_addr(saddr->sa_data)) 708 return -EADDRNOTAVAIL; 709 710 mutex_lock(&mdev->state_lock); 711 memcpy(new_mac, saddr->sa_data, ETH_ALEN); 712 err = mlx4_en_do_set_mac(priv, new_mac); 713 if (!err) 714 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); 715 mutex_unlock(&mdev->state_lock); 716 717 return err; 718 } 719 720 static void mlx4_en_clear_list(struct net_device *dev) 721 { 722 struct mlx4_en_priv *priv = netdev_priv(dev); 723 struct mlx4_en_mc_list *tmp, *mc_to_del; 724 725 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { 726 list_del(&mc_to_del->list); 727 kfree(mc_to_del); 728 } 729 } 730 731 static void mlx4_en_cache_mclist(struct net_device *dev) 732 { 733 struct mlx4_en_priv *priv = netdev_priv(dev); 734 struct netdev_hw_addr *ha; 735 struct mlx4_en_mc_list *tmp; 736 737 mlx4_en_clear_list(dev); 738 netdev_for_each_mc_addr(ha, dev) { 739 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); 740 if (!tmp) { 741 mlx4_en_clear_list(dev); 742 return; 743 } 744 memcpy(tmp->addr, ha->addr, ETH_ALEN); 745 list_add_tail(&tmp->list, &priv->mc_list); 746 } 747 } 748 749 static void update_mclist_flags(struct mlx4_en_priv *priv, 750 struct list_head *dst, 751 struct list_head *src) 752 { 753 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; 754 bool found; 755 756 /* Find all the entries that should be removed from dst, 757 * These are the entries that are not found in src 758 */ 759 list_for_each_entry(dst_tmp, dst, list) { 760 found = false; 761 list_for_each_entry(src_tmp, src, list) { 762 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 763 found = true; 764 break; 765 } 766 } 767 if (!found) 768 dst_tmp->action = MCLIST_REM; 769 } 770 771 /* Add entries that exist in src but not in dst 772 * mark them as need to add 773 */ 774 list_for_each_entry(src_tmp, src, list) { 775 found = false; 776 list_for_each_entry(dst_tmp, dst, list) { 777 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 778 dst_tmp->action = MCLIST_NONE; 779 found = true; 780 break; 781 } 782 } 783 if (!found) { 784 new_mc = kmemdup(src_tmp, 785 sizeof(struct mlx4_en_mc_list), 786 GFP_KERNEL); 787 if (!new_mc) 788 return; 789 790 new_mc->action = MCLIST_ADD; 791 list_add_tail(&new_mc->list, dst); 792 } 793 } 794 } 795 796 static void mlx4_en_set_rx_mode(struct net_device *dev) 797 { 798 struct mlx4_en_priv *priv = netdev_priv(dev); 799 800 if (!priv->port_up) 801 return; 802 803 queue_work(priv->mdev->workqueue, &priv->rx_mode_task); 804 } 805 806 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, 807 struct mlx4_en_dev *mdev) 808 { 809 int err = 0; 810 811 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { 812 if (netif_msg_rx_status(priv)) 813 en_warn(priv, "Entering promiscuous mode\n"); 814 priv->flags |= MLX4_EN_FLAG_PROMISC; 815 816 /* Enable promiscouos mode */ 817 switch (mdev->dev->caps.steering_mode) { 818 case MLX4_STEERING_MODE_DEVICE_MANAGED: 819 err = mlx4_flow_steer_promisc_add(mdev->dev, 820 priv->port, 821 priv->base_qpn, 822 MLX4_FS_ALL_DEFAULT); 823 if (err) 824 en_err(priv, "Failed enabling promiscuous mode\n"); 825 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 826 break; 827 828 case MLX4_STEERING_MODE_B0: 829 err = mlx4_unicast_promisc_add(mdev->dev, 830 priv->base_qpn, 831 priv->port); 832 if (err) 833 en_err(priv, "Failed enabling unicast promiscuous mode\n"); 834 835 /* Add the default qp number as multicast 836 * promisc 837 */ 838 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 839 err = mlx4_multicast_promisc_add(mdev->dev, 840 priv->base_qpn, 841 priv->port); 842 if (err) 843 en_err(priv, "Failed enabling multicast promiscuous mode\n"); 844 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 845 } 846 break; 847 848 case MLX4_STEERING_MODE_A0: 849 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 850 priv->port, 851 priv->base_qpn, 852 1); 853 if (err) 854 en_err(priv, "Failed enabling promiscuous mode\n"); 855 break; 856 } 857 858 /* Disable port multicast filter (unconditionally) */ 859 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 860 0, MLX4_MCAST_DISABLE); 861 if (err) 862 en_err(priv, "Failed disabling multicast filter\n"); 863 } 864 } 865 866 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv, 867 struct mlx4_en_dev *mdev) 868 { 869 int err = 0; 870 871 if (netif_msg_rx_status(priv)) 872 en_warn(priv, "Leaving promiscuous mode\n"); 873 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 874 875 /* Disable promiscouos mode */ 876 switch (mdev->dev->caps.steering_mode) { 877 case MLX4_STEERING_MODE_DEVICE_MANAGED: 878 err = mlx4_flow_steer_promisc_remove(mdev->dev, 879 priv->port, 880 MLX4_FS_ALL_DEFAULT); 881 if (err) 882 en_err(priv, "Failed disabling promiscuous mode\n"); 883 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 884 break; 885 886 case MLX4_STEERING_MODE_B0: 887 err = mlx4_unicast_promisc_remove(mdev->dev, 888 priv->base_qpn, 889 priv->port); 890 if (err) 891 en_err(priv, "Failed disabling unicast promiscuous mode\n"); 892 /* Disable Multicast promisc */ 893 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 894 err = mlx4_multicast_promisc_remove(mdev->dev, 895 priv->base_qpn, 896 priv->port); 897 if (err) 898 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 899 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 900 } 901 break; 902 903 case MLX4_STEERING_MODE_A0: 904 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 905 priv->port, 906 priv->base_qpn, 0); 907 if (err) 908 en_err(priv, "Failed disabling promiscuous mode\n"); 909 break; 910 } 911 } 912 913 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, 914 struct net_device *dev, 915 struct mlx4_en_dev *mdev) 916 { 917 struct mlx4_en_mc_list *mclist, *tmp; 918 u64 mcast_addr = 0; 919 u8 mc_list[16] = {0}; 920 int err = 0; 921 922 /* Enable/disable the multicast filter according to IFF_ALLMULTI */ 923 if (dev->flags & IFF_ALLMULTI) { 924 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 925 0, MLX4_MCAST_DISABLE); 926 if (err) 927 en_err(priv, "Failed disabling multicast filter\n"); 928 929 /* Add the default qp number as multicast promisc */ 930 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 931 switch (mdev->dev->caps.steering_mode) { 932 case MLX4_STEERING_MODE_DEVICE_MANAGED: 933 err = mlx4_flow_steer_promisc_add(mdev->dev, 934 priv->port, 935 priv->base_qpn, 936 MLX4_FS_MC_DEFAULT); 937 break; 938 939 case MLX4_STEERING_MODE_B0: 940 err = mlx4_multicast_promisc_add(mdev->dev, 941 priv->base_qpn, 942 priv->port); 943 break; 944 945 case MLX4_STEERING_MODE_A0: 946 break; 947 } 948 if (err) 949 en_err(priv, "Failed entering multicast promisc mode\n"); 950 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 951 } 952 } else { 953 /* Disable Multicast promisc */ 954 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 955 switch (mdev->dev->caps.steering_mode) { 956 case MLX4_STEERING_MODE_DEVICE_MANAGED: 957 err = mlx4_flow_steer_promisc_remove(mdev->dev, 958 priv->port, 959 MLX4_FS_MC_DEFAULT); 960 break; 961 962 case MLX4_STEERING_MODE_B0: 963 err = mlx4_multicast_promisc_remove(mdev->dev, 964 priv->base_qpn, 965 priv->port); 966 break; 967 968 case MLX4_STEERING_MODE_A0: 969 break; 970 } 971 if (err) 972 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 973 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 974 } 975 976 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 977 0, MLX4_MCAST_DISABLE); 978 if (err) 979 en_err(priv, "Failed disabling multicast filter\n"); 980 981 /* Flush mcast filter and init it with broadcast address */ 982 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, 983 1, MLX4_MCAST_CONFIG); 984 985 /* Update multicast list - we cache all addresses so they won't 986 * change while HW is updated holding the command semaphor */ 987 netif_addr_lock_bh(dev); 988 mlx4_en_cache_mclist(dev); 989 netif_addr_unlock_bh(dev); 990 list_for_each_entry(mclist, &priv->mc_list, list) { 991 mcast_addr = mlx4_mac_to_u64(mclist->addr); 992 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 993 mcast_addr, 0, MLX4_MCAST_CONFIG); 994 } 995 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 996 0, MLX4_MCAST_ENABLE); 997 if (err) 998 en_err(priv, "Failed enabling multicast filter\n"); 999 1000 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); 1001 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1002 if (mclist->action == MCLIST_REM) { 1003 /* detach this address and delete from list */ 1004 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1005 mc_list[5] = priv->port; 1006 err = mlx4_multicast_detach(mdev->dev, 1007 &priv->rss_map.indir_qp, 1008 mc_list, 1009 MLX4_PROT_ETH, 1010 mclist->reg_id); 1011 if (err) 1012 en_err(priv, "Fail to detach multicast address\n"); 1013 1014 if (mclist->tunnel_reg_id) { 1015 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id); 1016 if (err) 1017 en_err(priv, "Failed to detach multicast address\n"); 1018 } 1019 1020 /* remove from list */ 1021 list_del(&mclist->list); 1022 kfree(mclist); 1023 } else if (mclist->action == MCLIST_ADD) { 1024 /* attach the address */ 1025 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1026 /* needed for B0 steering support */ 1027 mc_list[5] = priv->port; 1028 err = mlx4_multicast_attach(mdev->dev, 1029 &priv->rss_map.indir_qp, 1030 mc_list, 1031 priv->port, 0, 1032 MLX4_PROT_ETH, 1033 &mclist->reg_id); 1034 if (err) 1035 en_err(priv, "Fail to attach multicast address\n"); 1036 1037 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn, 1038 &mclist->tunnel_reg_id); 1039 if (err) 1040 en_err(priv, "Failed to attach multicast address\n"); 1041 } 1042 } 1043 } 1044 } 1045 1046 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, 1047 struct net_device *dev, 1048 struct mlx4_en_dev *mdev) 1049 { 1050 struct netdev_hw_addr *ha; 1051 struct mlx4_mac_entry *entry; 1052 struct hlist_node *tmp; 1053 bool found; 1054 u64 mac; 1055 int err = 0; 1056 struct hlist_head *bucket; 1057 unsigned int i; 1058 int removed = 0; 1059 u32 prev_flags; 1060 1061 /* Note that we do not need to protect our mac_hash traversal with rcu, 1062 * since all modification code is protected by mdev->state_lock 1063 */ 1064 1065 /* find what to remove */ 1066 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1067 bucket = &priv->mac_hash[i]; 1068 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1069 found = false; 1070 netdev_for_each_uc_addr(ha, dev) { 1071 if (ether_addr_equal_64bits(entry->mac, 1072 ha->addr)) { 1073 found = true; 1074 break; 1075 } 1076 } 1077 1078 /* MAC address of the port is not in uc list */ 1079 if (ether_addr_equal_64bits(entry->mac, 1080 priv->current_mac)) 1081 found = true; 1082 1083 if (!found) { 1084 mac = mlx4_mac_to_u64(entry->mac); 1085 mlx4_en_uc_steer_release(priv, entry->mac, 1086 priv->base_qpn, 1087 entry->reg_id); 1088 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1089 1090 hlist_del_rcu(&entry->hlist); 1091 kfree_rcu(entry, rcu); 1092 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", 1093 entry->mac, priv->port); 1094 ++removed; 1095 } 1096 } 1097 } 1098 1099 /* if we didn't remove anything, there is no use in trying to add 1100 * again once we are in a forced promisc mode state 1101 */ 1102 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) 1103 return; 1104 1105 prev_flags = priv->flags; 1106 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 1107 1108 /* find what to add */ 1109 netdev_for_each_uc_addr(ha, dev) { 1110 found = false; 1111 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; 1112 hlist_for_each_entry(entry, bucket, hlist) { 1113 if (ether_addr_equal_64bits(entry->mac, ha->addr)) { 1114 found = true; 1115 break; 1116 } 1117 } 1118 1119 if (!found) { 1120 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1121 if (!entry) { 1122 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", 1123 ha->addr, priv->port); 1124 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1125 break; 1126 } 1127 mac = mlx4_mac_to_u64(ha->addr); 1128 memcpy(entry->mac, ha->addr, ETH_ALEN); 1129 err = mlx4_register_mac(mdev->dev, priv->port, mac); 1130 if (err < 0) { 1131 en_err(priv, "Failed registering MAC %pM on port %d: %d\n", 1132 ha->addr, priv->port, err); 1133 kfree(entry); 1134 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1135 break; 1136 } 1137 err = mlx4_en_uc_steer_add(priv, ha->addr, 1138 &priv->base_qpn, 1139 &entry->reg_id); 1140 if (err) { 1141 en_err(priv, "Failed adding MAC %pM on port %d: %d\n", 1142 ha->addr, priv->port, err); 1143 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1144 kfree(entry); 1145 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1146 break; 1147 } else { 1148 unsigned int mac_hash; 1149 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", 1150 ha->addr, priv->port); 1151 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; 1152 bucket = &priv->mac_hash[mac_hash]; 1153 hlist_add_head_rcu(&entry->hlist, bucket); 1154 } 1155 } 1156 } 1157 1158 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1159 en_warn(priv, "Forcing promiscuous mode on port:%d\n", 1160 priv->port); 1161 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1162 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", 1163 priv->port); 1164 } 1165 } 1166 1167 static void mlx4_en_do_set_rx_mode(struct work_struct *work) 1168 { 1169 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1170 rx_mode_task); 1171 struct mlx4_en_dev *mdev = priv->mdev; 1172 struct net_device *dev = priv->dev; 1173 1174 mutex_lock(&mdev->state_lock); 1175 if (!mdev->device_up) { 1176 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); 1177 goto out; 1178 } 1179 if (!priv->port_up) { 1180 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); 1181 goto out; 1182 } 1183 1184 if (!netif_carrier_ok(dev)) { 1185 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { 1186 if (priv->port_state.link_state) { 1187 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; 1188 netif_carrier_on(dev); 1189 en_dbg(LINK, priv, "Link Up\n"); 1190 } 1191 } 1192 } 1193 1194 if (dev->priv_flags & IFF_UNICAST_FLT) 1195 mlx4_en_do_uc_filter(priv, dev, mdev); 1196 1197 /* Promsicuous mode: disable all filters */ 1198 if ((dev->flags & IFF_PROMISC) || 1199 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { 1200 mlx4_en_set_promisc_mode(priv, mdev); 1201 goto out; 1202 } 1203 1204 /* Not in promiscuous mode */ 1205 if (priv->flags & MLX4_EN_FLAG_PROMISC) 1206 mlx4_en_clear_promisc_mode(priv, mdev); 1207 1208 mlx4_en_do_multicast(priv, dev, mdev); 1209 out: 1210 mutex_unlock(&mdev->state_lock); 1211 } 1212 1213 #ifdef CONFIG_NET_POLL_CONTROLLER 1214 static void mlx4_en_netpoll(struct net_device *dev) 1215 { 1216 struct mlx4_en_priv *priv = netdev_priv(dev); 1217 struct mlx4_en_cq *cq; 1218 int i; 1219 1220 for (i = 0; i < priv->tx_ring_num[TX]; i++) { 1221 cq = priv->tx_cq[TX][i]; 1222 napi_schedule(&cq->napi); 1223 } 1224 } 1225 #endif 1226 1227 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv) 1228 { 1229 u64 reg_id; 1230 int err = 0; 1231 int *qpn = &priv->base_qpn; 1232 struct mlx4_mac_entry *entry; 1233 1234 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); 1235 if (err) 1236 return err; 1237 1238 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn, 1239 &priv->tunnel_reg_id); 1240 if (err) 1241 goto tunnel_err; 1242 1243 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1244 if (!entry) { 1245 err = -ENOMEM; 1246 goto alloc_err; 1247 } 1248 1249 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac)); 1250 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac)); 1251 entry->reg_id = reg_id; 1252 hlist_add_head_rcu(&entry->hlist, 1253 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); 1254 1255 return 0; 1256 1257 alloc_err: 1258 if (priv->tunnel_reg_id) 1259 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 1260 1261 tunnel_err: 1262 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 1263 return err; 1264 } 1265 1266 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv) 1267 { 1268 u64 mac; 1269 unsigned int i; 1270 int qpn = priv->base_qpn; 1271 struct hlist_head *bucket; 1272 struct hlist_node *tmp; 1273 struct mlx4_mac_entry *entry; 1274 1275 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1276 bucket = &priv->mac_hash[i]; 1277 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1278 mac = mlx4_mac_to_u64(entry->mac); 1279 en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n", 1280 entry->mac); 1281 mlx4_en_uc_steer_release(priv, entry->mac, 1282 qpn, entry->reg_id); 1283 1284 mlx4_unregister_mac(priv->mdev->dev, priv->port, mac); 1285 hlist_del_rcu(&entry->hlist); 1286 kfree_rcu(entry, rcu); 1287 } 1288 } 1289 1290 if (priv->tunnel_reg_id) { 1291 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 1292 priv->tunnel_reg_id = 0; 1293 } 1294 } 1295 1296 static void mlx4_en_tx_timeout(struct net_device *dev) 1297 { 1298 struct mlx4_en_priv *priv = netdev_priv(dev); 1299 struct mlx4_en_dev *mdev = priv->mdev; 1300 int i; 1301 1302 if (netif_msg_timer(priv)) 1303 en_warn(priv, "Tx timeout called on port:%d\n", priv->port); 1304 1305 for (i = 0; i < priv->tx_ring_num[TX]; i++) { 1306 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][i]; 1307 1308 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) 1309 continue; 1310 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", 1311 i, tx_ring->qpn, tx_ring->sp_cqn, 1312 tx_ring->cons, tx_ring->prod); 1313 } 1314 1315 priv->port_stats.tx_timeout++; 1316 en_dbg(DRV, priv, "Scheduling watchdog\n"); 1317 queue_work(mdev->workqueue, &priv->watchdog_task); 1318 } 1319 1320 1321 static struct rtnl_link_stats64 * 1322 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 1323 { 1324 struct mlx4_en_priv *priv = netdev_priv(dev); 1325 1326 spin_lock_bh(&priv->stats_lock); 1327 mlx4_en_fold_software_stats(dev); 1328 netdev_stats_to_stats64(stats, &dev->stats); 1329 spin_unlock_bh(&priv->stats_lock); 1330 1331 return stats; 1332 } 1333 1334 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1335 { 1336 struct mlx4_en_cq *cq; 1337 int i, t; 1338 1339 /* If we haven't received a specific coalescing setting 1340 * (module param), we set the moderation parameters as follows: 1341 * - moder_cnt is set to the number of mtu sized packets to 1342 * satisfy our coalescing target. 1343 * - moder_time is set to a fixed value. 1344 */ 1345 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1346 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1347 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1348 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1349 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1350 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1351 1352 /* Setup cq moderation params */ 1353 for (i = 0; i < priv->rx_ring_num; i++) { 1354 cq = priv->rx_cq[i]; 1355 cq->moder_cnt = priv->rx_frames; 1356 cq->moder_time = priv->rx_usecs; 1357 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1358 priv->last_moder_packets[i] = 0; 1359 priv->last_moder_bytes[i] = 0; 1360 } 1361 1362 for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) { 1363 for (i = 0; i < priv->tx_ring_num[t]; i++) { 1364 cq = priv->tx_cq[t][i]; 1365 cq->moder_cnt = priv->tx_frames; 1366 cq->moder_time = priv->tx_usecs; 1367 } 1368 } 1369 1370 /* Reset auto-moderation params */ 1371 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1372 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1373 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1374 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1375 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1376 priv->adaptive_rx_coal = 1; 1377 priv->last_moder_jiffies = 0; 1378 priv->last_moder_tx_packets = 0; 1379 } 1380 1381 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1382 { 1383 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1384 struct mlx4_en_cq *cq; 1385 unsigned long packets; 1386 unsigned long rate; 1387 unsigned long avg_pkt_size; 1388 unsigned long rx_packets; 1389 unsigned long rx_bytes; 1390 unsigned long rx_pkt_diff; 1391 int moder_time; 1392 int ring, err; 1393 1394 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1395 return; 1396 1397 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1398 rx_packets = READ_ONCE(priv->rx_ring[ring]->packets); 1399 rx_bytes = READ_ONCE(priv->rx_ring[ring]->bytes); 1400 1401 rx_pkt_diff = ((unsigned long) (rx_packets - 1402 priv->last_moder_packets[ring])); 1403 packets = rx_pkt_diff; 1404 rate = packets * HZ / period; 1405 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1406 priv->last_moder_bytes[ring])) / packets : 0; 1407 1408 /* Apply auto-moderation only when packet rate 1409 * exceeds a rate that it matters */ 1410 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1411 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1412 if (rate < priv->pkt_rate_low) 1413 moder_time = priv->rx_usecs_low; 1414 else if (rate > priv->pkt_rate_high) 1415 moder_time = priv->rx_usecs_high; 1416 else 1417 moder_time = (rate - priv->pkt_rate_low) * 1418 (priv->rx_usecs_high - priv->rx_usecs_low) / 1419 (priv->pkt_rate_high - priv->pkt_rate_low) + 1420 priv->rx_usecs_low; 1421 } else { 1422 moder_time = priv->rx_usecs_low; 1423 } 1424 1425 if (moder_time != priv->last_moder_time[ring]) { 1426 priv->last_moder_time[ring] = moder_time; 1427 cq = priv->rx_cq[ring]; 1428 cq->moder_time = moder_time; 1429 cq->moder_cnt = priv->rx_frames; 1430 err = mlx4_en_set_cq_moder(priv, cq); 1431 if (err) 1432 en_err(priv, "Failed modifying moderation for cq:%d\n", 1433 ring); 1434 } 1435 priv->last_moder_packets[ring] = rx_packets; 1436 priv->last_moder_bytes[ring] = rx_bytes; 1437 } 1438 1439 priv->last_moder_jiffies = jiffies; 1440 } 1441 1442 static void mlx4_en_do_get_stats(struct work_struct *work) 1443 { 1444 struct delayed_work *delay = to_delayed_work(work); 1445 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1446 stats_task); 1447 struct mlx4_en_dev *mdev = priv->mdev; 1448 int err; 1449 1450 mutex_lock(&mdev->state_lock); 1451 if (mdev->device_up) { 1452 if (priv->port_up) { 1453 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1454 if (err) 1455 en_dbg(HW, priv, "Could not update stats\n"); 1456 1457 mlx4_en_auto_moderation(priv); 1458 } 1459 1460 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1461 } 1462 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1463 mlx4_en_do_set_mac(priv, priv->current_mac); 1464 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1465 } 1466 mutex_unlock(&mdev->state_lock); 1467 } 1468 1469 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1470 * periodically 1471 */ 1472 static void mlx4_en_service_task(struct work_struct *work) 1473 { 1474 struct delayed_work *delay = to_delayed_work(work); 1475 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1476 service_task); 1477 struct mlx4_en_dev *mdev = priv->mdev; 1478 1479 mutex_lock(&mdev->state_lock); 1480 if (mdev->device_up) { 1481 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1482 mlx4_en_ptp_overflow_check(mdev); 1483 1484 mlx4_en_recover_from_oom(priv); 1485 queue_delayed_work(mdev->workqueue, &priv->service_task, 1486 SERVICE_TASK_DELAY); 1487 } 1488 mutex_unlock(&mdev->state_lock); 1489 } 1490 1491 static void mlx4_en_linkstate(struct work_struct *work) 1492 { 1493 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1494 linkstate_task); 1495 struct mlx4_en_dev *mdev = priv->mdev; 1496 int linkstate = priv->link_state; 1497 1498 mutex_lock(&mdev->state_lock); 1499 /* If observable port state changed set carrier state and 1500 * report to system log */ 1501 if (priv->last_link_state != linkstate) { 1502 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1503 en_info(priv, "Link Down\n"); 1504 netif_carrier_off(priv->dev); 1505 } else { 1506 en_info(priv, "Link Up\n"); 1507 netif_carrier_on(priv->dev); 1508 } 1509 } 1510 priv->last_link_state = linkstate; 1511 mutex_unlock(&mdev->state_lock); 1512 } 1513 1514 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1515 { 1516 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx]; 1517 int numa_node = priv->mdev->dev->numa_node; 1518 1519 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL)) 1520 return -ENOMEM; 1521 1522 cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node), 1523 ring->affinity_mask); 1524 return 0; 1525 } 1526 1527 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1528 { 1529 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask); 1530 } 1531 1532 static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv, 1533 int tx_ring_idx) 1534 { 1535 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX_XDP][tx_ring_idx]; 1536 int rr_index = tx_ring_idx; 1537 1538 tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc; 1539 tx_ring->recycle_ring = priv->rx_ring[rr_index]; 1540 en_dbg(DRV, priv, "Set tx_ring[%d][%d]->recycle_ring = rx_ring[%d]\n", 1541 TX_XDP, tx_ring_idx, rr_index); 1542 } 1543 1544 int mlx4_en_start_port(struct net_device *dev) 1545 { 1546 struct mlx4_en_priv *priv = netdev_priv(dev); 1547 struct mlx4_en_dev *mdev = priv->mdev; 1548 struct mlx4_en_cq *cq; 1549 struct mlx4_en_tx_ring *tx_ring; 1550 int rx_index = 0; 1551 int err = 0; 1552 int i, t; 1553 int j; 1554 u8 mc_list[16] = {0}; 1555 1556 if (priv->port_up) { 1557 en_dbg(DRV, priv, "start port called while port already up\n"); 1558 return 0; 1559 } 1560 1561 INIT_LIST_HEAD(&priv->mc_list); 1562 INIT_LIST_HEAD(&priv->curr_list); 1563 INIT_LIST_HEAD(&priv->ethtool_list); 1564 memset(&priv->ethtool_rules[0], 0, 1565 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1566 1567 /* Calculate Rx buf size */ 1568 dev->mtu = min(dev->mtu, priv->max_mtu); 1569 mlx4_en_calc_rx_buf(dev); 1570 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1571 1572 /* Configure rx cq's and rings */ 1573 err = mlx4_en_activate_rx_rings(priv); 1574 if (err) { 1575 en_err(priv, "Failed to activate RX rings\n"); 1576 return err; 1577 } 1578 for (i = 0; i < priv->rx_ring_num; i++) { 1579 cq = priv->rx_cq[i]; 1580 1581 err = mlx4_en_init_affinity_hint(priv, i); 1582 if (err) { 1583 en_err(priv, "Failed preparing IRQ affinity hint\n"); 1584 goto cq_err; 1585 } 1586 1587 err = mlx4_en_activate_cq(priv, cq, i); 1588 if (err) { 1589 en_err(priv, "Failed activating Rx CQ\n"); 1590 mlx4_en_free_affinity_hint(priv, i); 1591 goto cq_err; 1592 } 1593 1594 for (j = 0; j < cq->size; j++) { 1595 struct mlx4_cqe *cqe = NULL; 1596 1597 cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) + 1598 priv->cqe_factor; 1599 cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1600 } 1601 1602 err = mlx4_en_set_cq_moder(priv, cq); 1603 if (err) { 1604 en_err(priv, "Failed setting cq moderation parameters\n"); 1605 mlx4_en_deactivate_cq(priv, cq); 1606 mlx4_en_free_affinity_hint(priv, i); 1607 goto cq_err; 1608 } 1609 mlx4_en_arm_cq(priv, cq); 1610 priv->rx_ring[i]->cqn = cq->mcq.cqn; 1611 ++rx_index; 1612 } 1613 1614 /* Set qp number */ 1615 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1616 err = mlx4_en_get_qp(priv); 1617 if (err) { 1618 en_err(priv, "Failed getting eth qp\n"); 1619 goto cq_err; 1620 } 1621 mdev->mac_removed[priv->port] = 0; 1622 1623 priv->counter_index = 1624 mlx4_get_default_counter_index(mdev->dev, priv->port); 1625 1626 err = mlx4_en_config_rss_steer(priv); 1627 if (err) { 1628 en_err(priv, "Failed configuring rss steering\n"); 1629 goto mac_err; 1630 } 1631 1632 err = mlx4_en_create_drop_qp(priv); 1633 if (err) 1634 goto rss_err; 1635 1636 /* Configure tx cq's and rings */ 1637 for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) { 1638 u8 num_tx_rings_p_up = t == TX ? priv->num_tx_rings_p_up : 1; 1639 1640 for (i = 0; i < priv->tx_ring_num[t]; i++) { 1641 /* Configure cq */ 1642 cq = priv->tx_cq[t][i]; 1643 err = mlx4_en_activate_cq(priv, cq, i); 1644 if (err) { 1645 en_err(priv, "Failed allocating Tx CQ\n"); 1646 goto tx_err; 1647 } 1648 err = mlx4_en_set_cq_moder(priv, cq); 1649 if (err) { 1650 en_err(priv, "Failed setting cq moderation parameters\n"); 1651 mlx4_en_deactivate_cq(priv, cq); 1652 goto tx_err; 1653 } 1654 en_dbg(DRV, priv, 1655 "Resetting index of collapsed CQ:%d to -1\n", i); 1656 cq->buf->wqe_index = cpu_to_be16(0xffff); 1657 1658 /* Configure ring */ 1659 tx_ring = priv->tx_ring[t][i]; 1660 err = mlx4_en_activate_tx_ring(priv, tx_ring, 1661 cq->mcq.cqn, 1662 i / num_tx_rings_p_up); 1663 if (err) { 1664 en_err(priv, "Failed allocating Tx ring\n"); 1665 mlx4_en_deactivate_cq(priv, cq); 1666 goto tx_err; 1667 } 1668 if (t != TX_XDP) { 1669 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1670 tx_ring->recycle_ring = NULL; 1671 } else { 1672 mlx4_en_init_recycle_ring(priv, i); 1673 } 1674 1675 /* Arm CQ for TX completions */ 1676 mlx4_en_arm_cq(priv, cq); 1677 1678 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1679 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1680 *((u32 *)(tx_ring->buf + j)) = 0xffffffff; 1681 } 1682 } 1683 1684 /* Configure port */ 1685 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1686 priv->rx_skb_size + ETH_FCS_LEN, 1687 priv->prof->tx_pause, 1688 priv->prof->tx_ppp, 1689 priv->prof->rx_pause, 1690 priv->prof->rx_ppp); 1691 if (err) { 1692 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1693 priv->port, err); 1694 goto tx_err; 1695 } 1696 /* Set default qp number */ 1697 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1698 if (err) { 1699 en_err(priv, "Failed setting default qp numbers\n"); 1700 goto tx_err; 1701 } 1702 1703 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 1704 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 1705 if (err) { 1706 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 1707 err); 1708 goto tx_err; 1709 } 1710 } 1711 1712 /* Init port */ 1713 en_dbg(HW, priv, "Initializing port\n"); 1714 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1715 if (err) { 1716 en_err(priv, "Failed Initializing port\n"); 1717 goto tx_err; 1718 } 1719 1720 /* Set Unicast and VXLAN steering rules */ 1721 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 && 1722 mlx4_en_set_rss_steer_rules(priv)) 1723 mlx4_warn(mdev, "Failed setting steering rules\n"); 1724 1725 /* Attach rx QP to bradcast address */ 1726 eth_broadcast_addr(&mc_list[10]); 1727 mc_list[5] = priv->port; /* needed for B0 steering support */ 1728 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1729 priv->port, 0, MLX4_PROT_ETH, 1730 &priv->broadcast_id)) 1731 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1732 1733 /* Must redo promiscuous mode setup. */ 1734 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1735 1736 /* Schedule multicast task to populate multicast list */ 1737 queue_work(mdev->workqueue, &priv->rx_mode_task); 1738 1739 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 1740 udp_tunnel_get_rx_info(dev); 1741 1742 priv->port_up = true; 1743 1744 /* Process all completions if exist to prevent 1745 * the queues freezing if they are full 1746 */ 1747 for (i = 0; i < priv->rx_ring_num; i++) 1748 napi_schedule(&priv->rx_cq[i]->napi); 1749 1750 netif_tx_start_all_queues(dev); 1751 netif_device_attach(dev); 1752 1753 return 0; 1754 1755 tx_err: 1756 if (t == MLX4_EN_NUM_TX_TYPES) { 1757 t--; 1758 i = priv->tx_ring_num[t]; 1759 } 1760 while (t >= 0) { 1761 while (i--) { 1762 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]); 1763 mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]); 1764 } 1765 if (!t--) 1766 break; 1767 i = priv->tx_ring_num[t]; 1768 } 1769 mlx4_en_destroy_drop_qp(priv); 1770 rss_err: 1771 mlx4_en_release_rss_steer(priv); 1772 mac_err: 1773 mlx4_en_put_qp(priv); 1774 cq_err: 1775 while (rx_index--) { 1776 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); 1777 mlx4_en_free_affinity_hint(priv, rx_index); 1778 } 1779 for (i = 0; i < priv->rx_ring_num; i++) 1780 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1781 1782 return err; /* need to close devices */ 1783 } 1784 1785 1786 void mlx4_en_stop_port(struct net_device *dev, int detach) 1787 { 1788 struct mlx4_en_priv *priv = netdev_priv(dev); 1789 struct mlx4_en_dev *mdev = priv->mdev; 1790 struct mlx4_en_mc_list *mclist, *tmp; 1791 struct ethtool_flow_id *flow, *tmp_flow; 1792 int i, t; 1793 u8 mc_list[16] = {0}; 1794 1795 if (!priv->port_up) { 1796 en_dbg(DRV, priv, "stop port called while port already down\n"); 1797 return; 1798 } 1799 1800 /* close port*/ 1801 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1802 1803 /* Synchronize with tx routine */ 1804 netif_tx_lock_bh(dev); 1805 if (detach) 1806 netif_device_detach(dev); 1807 netif_tx_stop_all_queues(dev); 1808 netif_tx_unlock_bh(dev); 1809 1810 netif_tx_disable(dev); 1811 1812 spin_lock_bh(&priv->stats_lock); 1813 mlx4_en_fold_software_stats(dev); 1814 /* Set port as not active */ 1815 priv->port_up = false; 1816 spin_unlock_bh(&priv->stats_lock); 1817 1818 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 1819 1820 /* Promsicuous mode */ 1821 if (mdev->dev->caps.steering_mode == 1822 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1823 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | 1824 MLX4_EN_FLAG_MC_PROMISC); 1825 mlx4_flow_steer_promisc_remove(mdev->dev, 1826 priv->port, 1827 MLX4_FS_ALL_DEFAULT); 1828 mlx4_flow_steer_promisc_remove(mdev->dev, 1829 priv->port, 1830 MLX4_FS_MC_DEFAULT); 1831 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { 1832 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 1833 1834 /* Disable promiscouos mode */ 1835 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, 1836 priv->port); 1837 1838 /* Disable Multicast promisc */ 1839 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1840 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, 1841 priv->port); 1842 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1843 } 1844 } 1845 1846 /* Detach All multicasts */ 1847 eth_broadcast_addr(&mc_list[10]); 1848 mc_list[5] = priv->port; /* needed for B0 steering support */ 1849 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1850 MLX4_PROT_ETH, priv->broadcast_id); 1851 list_for_each_entry(mclist, &priv->curr_list, list) { 1852 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1853 mc_list[5] = priv->port; 1854 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, 1855 mc_list, MLX4_PROT_ETH, mclist->reg_id); 1856 if (mclist->tunnel_reg_id) 1857 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id); 1858 } 1859 mlx4_en_clear_list(dev); 1860 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1861 list_del(&mclist->list); 1862 kfree(mclist); 1863 } 1864 1865 /* Flush multicast filter */ 1866 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); 1867 1868 /* Remove flow steering rules for the port*/ 1869 if (mdev->dev->caps.steering_mode == 1870 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1871 ASSERT_RTNL(); 1872 list_for_each_entry_safe(flow, tmp_flow, 1873 &priv->ethtool_list, list) { 1874 mlx4_flow_detach(mdev->dev, flow->id); 1875 list_del(&flow->list); 1876 } 1877 } 1878 1879 mlx4_en_destroy_drop_qp(priv); 1880 1881 /* Free TX Rings */ 1882 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { 1883 for (i = 0; i < priv->tx_ring_num[t]; i++) { 1884 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]); 1885 mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]); 1886 } 1887 } 1888 msleep(10); 1889 1890 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) 1891 for (i = 0; i < priv->tx_ring_num[t]; i++) 1892 mlx4_en_free_tx_buf(dev, priv->tx_ring[t][i]); 1893 1894 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 1895 mlx4_en_delete_rss_steer_rules(priv); 1896 1897 /* Free RSS qps */ 1898 mlx4_en_release_rss_steer(priv); 1899 1900 /* Unregister Mac address for the port */ 1901 mlx4_en_put_qp(priv); 1902 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN)) 1903 mdev->mac_removed[priv->port] = 1; 1904 1905 /* Free RX Rings */ 1906 for (i = 0; i < priv->rx_ring_num; i++) { 1907 struct mlx4_en_cq *cq = priv->rx_cq[i]; 1908 1909 napi_synchronize(&cq->napi); 1910 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1911 mlx4_en_deactivate_cq(priv, cq); 1912 1913 mlx4_en_free_affinity_hint(priv, i); 1914 } 1915 } 1916 1917 static void mlx4_en_restart(struct work_struct *work) 1918 { 1919 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1920 watchdog_task); 1921 struct mlx4_en_dev *mdev = priv->mdev; 1922 struct net_device *dev = priv->dev; 1923 1924 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1925 1926 rtnl_lock(); 1927 mutex_lock(&mdev->state_lock); 1928 if (priv->port_up) { 1929 mlx4_en_stop_port(dev, 1); 1930 if (mlx4_en_start_port(dev)) 1931 en_err(priv, "Failed restarting port %d\n", priv->port); 1932 } 1933 mutex_unlock(&mdev->state_lock); 1934 rtnl_unlock(); 1935 } 1936 1937 static void mlx4_en_clear_stats(struct net_device *dev) 1938 { 1939 struct mlx4_en_priv *priv = netdev_priv(dev); 1940 struct mlx4_en_dev *mdev = priv->mdev; 1941 struct mlx4_en_tx_ring **tx_ring; 1942 int i; 1943 1944 if (!mlx4_is_slave(mdev->dev)) 1945 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1946 en_dbg(HW, priv, "Failed dumping statistics\n"); 1947 1948 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1949 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1950 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1951 memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats)); 1952 memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats)); 1953 memset(&priv->rx_priority_flowstats, 0, 1954 sizeof(priv->rx_priority_flowstats)); 1955 memset(&priv->tx_priority_flowstats, 0, 1956 sizeof(priv->tx_priority_flowstats)); 1957 memset(&priv->pf_stats, 0, sizeof(priv->pf_stats)); 1958 1959 tx_ring = priv->tx_ring[TX]; 1960 for (i = 0; i < priv->tx_ring_num[TX]; i++) { 1961 tx_ring[i]->bytes = 0; 1962 tx_ring[i]->packets = 0; 1963 tx_ring[i]->tx_csum = 0; 1964 tx_ring[i]->tx_dropped = 0; 1965 tx_ring[i]->queue_stopped = 0; 1966 tx_ring[i]->wake_queue = 0; 1967 tx_ring[i]->tso_packets = 0; 1968 tx_ring[i]->xmit_more = 0; 1969 } 1970 for (i = 0; i < priv->rx_ring_num; i++) { 1971 priv->rx_ring[i]->bytes = 0; 1972 priv->rx_ring[i]->packets = 0; 1973 priv->rx_ring[i]->csum_ok = 0; 1974 priv->rx_ring[i]->csum_none = 0; 1975 priv->rx_ring[i]->csum_complete = 0; 1976 } 1977 } 1978 1979 static int mlx4_en_open(struct net_device *dev) 1980 { 1981 struct mlx4_en_priv *priv = netdev_priv(dev); 1982 struct mlx4_en_dev *mdev = priv->mdev; 1983 int err = 0; 1984 1985 mutex_lock(&mdev->state_lock); 1986 1987 if (!mdev->device_up) { 1988 en_err(priv, "Cannot open - device down/disabled\n"); 1989 err = -EBUSY; 1990 goto out; 1991 } 1992 1993 /* Reset HW statistics and SW counters */ 1994 mlx4_en_clear_stats(dev); 1995 1996 err = mlx4_en_start_port(dev); 1997 if (err) 1998 en_err(priv, "Failed starting port:%d\n", priv->port); 1999 2000 out: 2001 mutex_unlock(&mdev->state_lock); 2002 return err; 2003 } 2004 2005 2006 static int mlx4_en_close(struct net_device *dev) 2007 { 2008 struct mlx4_en_priv *priv = netdev_priv(dev); 2009 struct mlx4_en_dev *mdev = priv->mdev; 2010 2011 en_dbg(IFDOWN, priv, "Close port called\n"); 2012 2013 mutex_lock(&mdev->state_lock); 2014 2015 mlx4_en_stop_port(dev, 0); 2016 netif_carrier_off(dev); 2017 2018 mutex_unlock(&mdev->state_lock); 2019 return 0; 2020 } 2021 2022 static void mlx4_en_free_resources(struct mlx4_en_priv *priv) 2023 { 2024 int i, t; 2025 2026 #ifdef CONFIG_RFS_ACCEL 2027 priv->dev->rx_cpu_rmap = NULL; 2028 #endif 2029 2030 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { 2031 for (i = 0; i < priv->tx_ring_num[t]; i++) { 2032 if (priv->tx_ring[t] && priv->tx_ring[t][i]) 2033 mlx4_en_destroy_tx_ring(priv, 2034 &priv->tx_ring[t][i]); 2035 if (priv->tx_cq[t] && priv->tx_cq[t][i]) 2036 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]); 2037 } 2038 } 2039 2040 for (i = 0; i < priv->rx_ring_num; i++) { 2041 if (priv->rx_ring[i]) 2042 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2043 priv->prof->rx_ring_size, priv->stride); 2044 if (priv->rx_cq[i]) 2045 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2046 } 2047 2048 } 2049 2050 static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 2051 { 2052 struct mlx4_en_port_profile *prof = priv->prof; 2053 int i, t; 2054 int node; 2055 2056 /* Create tx Rings */ 2057 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { 2058 for (i = 0; i < priv->tx_ring_num[t]; i++) { 2059 node = cpu_to_node(i % num_online_cpus()); 2060 if (mlx4_en_create_cq(priv, &priv->tx_cq[t][i], 2061 prof->tx_ring_size, i, t, node)) 2062 goto err; 2063 2064 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[t][i], 2065 prof->tx_ring_size, 2066 TXBB_SIZE, node, i)) 2067 goto err; 2068 } 2069 } 2070 2071 /* Create rx Rings */ 2072 for (i = 0; i < priv->rx_ring_num; i++) { 2073 node = cpu_to_node(i % num_online_cpus()); 2074 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 2075 prof->rx_ring_size, i, RX, node)) 2076 goto err; 2077 2078 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 2079 prof->rx_ring_size, priv->stride, 2080 node)) 2081 goto err; 2082 } 2083 2084 #ifdef CONFIG_RFS_ACCEL 2085 priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port); 2086 #endif 2087 2088 return 0; 2089 2090 err: 2091 en_err(priv, "Failed to allocate NIC resources\n"); 2092 for (i = 0; i < priv->rx_ring_num; i++) { 2093 if (priv->rx_ring[i]) 2094 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2095 prof->rx_ring_size, 2096 priv->stride); 2097 if (priv->rx_cq[i]) 2098 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2099 } 2100 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { 2101 for (i = 0; i < priv->tx_ring_num[t]; i++) { 2102 if (priv->tx_ring[t][i]) 2103 mlx4_en_destroy_tx_ring(priv, 2104 &priv->tx_ring[t][i]); 2105 if (priv->tx_cq[t][i]) 2106 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]); 2107 } 2108 } 2109 return -ENOMEM; 2110 } 2111 2112 2113 static int mlx4_en_copy_priv(struct mlx4_en_priv *dst, 2114 struct mlx4_en_priv *src, 2115 struct mlx4_en_port_profile *prof) 2116 { 2117 int t; 2118 2119 memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config, 2120 sizeof(dst->hwtstamp_config)); 2121 dst->num_tx_rings_p_up = src->mdev->profile.num_tx_rings_p_up; 2122 dst->rx_ring_num = prof->rx_ring_num; 2123 dst->flags = prof->flags; 2124 dst->mdev = src->mdev; 2125 dst->port = src->port; 2126 dst->dev = src->dev; 2127 dst->prof = prof; 2128 dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2129 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2130 2131 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { 2132 dst->tx_ring_num[t] = prof->tx_ring_num[t]; 2133 if (!dst->tx_ring_num[t]) 2134 continue; 2135 2136 dst->tx_ring[t] = kzalloc(sizeof(struct mlx4_en_tx_ring *) * 2137 MAX_TX_RINGS, GFP_KERNEL); 2138 if (!dst->tx_ring[t]) 2139 goto err_free_tx; 2140 2141 dst->tx_cq[t] = kzalloc(sizeof(struct mlx4_en_cq *) * 2142 MAX_TX_RINGS, GFP_KERNEL); 2143 if (!dst->tx_cq[t]) { 2144 kfree(dst->tx_ring[t]); 2145 goto err_free_tx; 2146 } 2147 } 2148 2149 return 0; 2150 2151 err_free_tx: 2152 while (t--) { 2153 kfree(dst->tx_ring[t]); 2154 kfree(dst->tx_cq[t]); 2155 } 2156 return -ENOMEM; 2157 } 2158 2159 static void mlx4_en_update_priv(struct mlx4_en_priv *dst, 2160 struct mlx4_en_priv *src) 2161 { 2162 int t; 2163 memcpy(dst->rx_ring, src->rx_ring, 2164 sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num); 2165 memcpy(dst->rx_cq, src->rx_cq, 2166 sizeof(struct mlx4_en_cq *) * src->rx_ring_num); 2167 memcpy(&dst->hwtstamp_config, &src->hwtstamp_config, 2168 sizeof(dst->hwtstamp_config)); 2169 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { 2170 dst->tx_ring_num[t] = src->tx_ring_num[t]; 2171 dst->tx_ring[t] = src->tx_ring[t]; 2172 dst->tx_cq[t] = src->tx_cq[t]; 2173 } 2174 dst->rx_ring_num = src->rx_ring_num; 2175 memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile)); 2176 } 2177 2178 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv, 2179 struct mlx4_en_priv *tmp, 2180 struct mlx4_en_port_profile *prof) 2181 { 2182 int t; 2183 2184 mlx4_en_copy_priv(tmp, priv, prof); 2185 2186 if (mlx4_en_alloc_resources(tmp)) { 2187 en_warn(priv, 2188 "%s: Resource allocation failed, using previous configuration\n", 2189 __func__); 2190 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { 2191 kfree(tmp->tx_ring[t]); 2192 kfree(tmp->tx_cq[t]); 2193 } 2194 return -ENOMEM; 2195 } 2196 return 0; 2197 } 2198 2199 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv, 2200 struct mlx4_en_priv *tmp) 2201 { 2202 mlx4_en_free_resources(priv); 2203 mlx4_en_update_priv(priv, tmp); 2204 } 2205 2206 void mlx4_en_destroy_netdev(struct net_device *dev) 2207 { 2208 struct mlx4_en_priv *priv = netdev_priv(dev); 2209 struct mlx4_en_dev *mdev = priv->mdev; 2210 int t; 2211 2212 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2213 2214 /* Unregister device - this will close the port if it was up */ 2215 if (priv->registered) { 2216 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev, 2217 priv->port)); 2218 unregister_netdev(dev); 2219 } 2220 2221 if (priv->allocated) 2222 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2223 2224 cancel_delayed_work(&priv->stats_task); 2225 cancel_delayed_work(&priv->service_task); 2226 /* flush any pending task for this netdev */ 2227 flush_workqueue(mdev->workqueue); 2228 2229 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2230 mlx4_en_remove_timestamp(mdev); 2231 2232 /* Detach the netdev so tasks would not attempt to access it */ 2233 mutex_lock(&mdev->state_lock); 2234 mdev->pndev[priv->port] = NULL; 2235 mdev->upper[priv->port] = NULL; 2236 2237 #ifdef CONFIG_RFS_ACCEL 2238 mlx4_en_cleanup_filters(priv); 2239 #endif 2240 2241 mlx4_en_free_resources(priv); 2242 mutex_unlock(&mdev->state_lock); 2243 2244 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { 2245 kfree(priv->tx_ring[t]); 2246 kfree(priv->tx_cq[t]); 2247 } 2248 2249 free_netdev(dev); 2250 } 2251 2252 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2253 { 2254 struct mlx4_en_priv *priv = netdev_priv(dev); 2255 struct mlx4_en_dev *mdev = priv->mdev; 2256 int err = 0; 2257 2258 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2259 dev->mtu, new_mtu); 2260 2261 if (priv->tx_ring_num[TX_XDP] && MLX4_EN_EFF_MTU(new_mtu) > FRAG_SZ0) { 2262 en_err(priv, "MTU size:%d requires frags but XDP running\n", 2263 new_mtu); 2264 return -EOPNOTSUPP; 2265 } 2266 dev->mtu = new_mtu; 2267 2268 if (netif_running(dev)) { 2269 mutex_lock(&mdev->state_lock); 2270 if (!mdev->device_up) { 2271 /* NIC is probably restarting - let watchdog task reset 2272 * the port */ 2273 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2274 } else { 2275 mlx4_en_stop_port(dev, 1); 2276 err = mlx4_en_start_port(dev); 2277 if (err) { 2278 en_err(priv, "Failed restarting port:%d\n", 2279 priv->port); 2280 queue_work(mdev->workqueue, &priv->watchdog_task); 2281 } 2282 } 2283 mutex_unlock(&mdev->state_lock); 2284 } 2285 return 0; 2286 } 2287 2288 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2289 { 2290 struct mlx4_en_priv *priv = netdev_priv(dev); 2291 struct mlx4_en_dev *mdev = priv->mdev; 2292 struct hwtstamp_config config; 2293 2294 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2295 return -EFAULT; 2296 2297 /* reserved for future extensions */ 2298 if (config.flags) 2299 return -EINVAL; 2300 2301 /* device doesn't support time stamping */ 2302 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2303 return -EINVAL; 2304 2305 /* TX HW timestamp */ 2306 switch (config.tx_type) { 2307 case HWTSTAMP_TX_OFF: 2308 case HWTSTAMP_TX_ON: 2309 break; 2310 default: 2311 return -ERANGE; 2312 } 2313 2314 /* RX HW timestamp */ 2315 switch (config.rx_filter) { 2316 case HWTSTAMP_FILTER_NONE: 2317 break; 2318 case HWTSTAMP_FILTER_ALL: 2319 case HWTSTAMP_FILTER_SOME: 2320 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2321 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2322 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2323 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2324 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2325 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2326 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2327 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2328 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2329 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2330 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2331 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2332 config.rx_filter = HWTSTAMP_FILTER_ALL; 2333 break; 2334 default: 2335 return -ERANGE; 2336 } 2337 2338 if (mlx4_en_reset_config(dev, config, dev->features)) { 2339 config.tx_type = HWTSTAMP_TX_OFF; 2340 config.rx_filter = HWTSTAMP_FILTER_NONE; 2341 } 2342 2343 return copy_to_user(ifr->ifr_data, &config, 2344 sizeof(config)) ? -EFAULT : 0; 2345 } 2346 2347 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2348 { 2349 struct mlx4_en_priv *priv = netdev_priv(dev); 2350 2351 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2352 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2353 } 2354 2355 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2356 { 2357 switch (cmd) { 2358 case SIOCSHWTSTAMP: 2359 return mlx4_en_hwtstamp_set(dev, ifr); 2360 case SIOCGHWTSTAMP: 2361 return mlx4_en_hwtstamp_get(dev, ifr); 2362 default: 2363 return -EOPNOTSUPP; 2364 } 2365 } 2366 2367 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev, 2368 netdev_features_t features) 2369 { 2370 struct mlx4_en_priv *en_priv = netdev_priv(netdev); 2371 struct mlx4_en_dev *mdev = en_priv->mdev; 2372 2373 /* Since there is no support for separate RX C-TAG/S-TAG vlan accel 2374 * enable/disable make sure S-TAG flag is always in same state as 2375 * C-TAG. 2376 */ 2377 if (features & NETIF_F_HW_VLAN_CTAG_RX && 2378 !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 2379 features |= NETIF_F_HW_VLAN_STAG_RX; 2380 else 2381 features &= ~NETIF_F_HW_VLAN_STAG_RX; 2382 2383 return features; 2384 } 2385 2386 static int mlx4_en_set_features(struct net_device *netdev, 2387 netdev_features_t features) 2388 { 2389 struct mlx4_en_priv *priv = netdev_priv(netdev); 2390 bool reset = false; 2391 int ret = 0; 2392 2393 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) { 2394 en_info(priv, "Turn %s RX-FCS\n", 2395 (features & NETIF_F_RXFCS) ? "ON" : "OFF"); 2396 reset = true; 2397 } 2398 2399 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) { 2400 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0; 2401 2402 en_info(priv, "Turn %s RX-ALL\n", 2403 ignore_fcs_value ? "ON" : "OFF"); 2404 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev, 2405 priv->port, ignore_fcs_value); 2406 if (ret) 2407 return ret; 2408 } 2409 2410 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 2411 en_info(priv, "Turn %s RX vlan strip offload\n", 2412 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF"); 2413 reset = true; 2414 } 2415 2416 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX)) 2417 en_info(priv, "Turn %s TX vlan strip offload\n", 2418 (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF"); 2419 2420 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX)) 2421 en_info(priv, "Turn %s TX S-VLAN strip offload\n", 2422 (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF"); 2423 2424 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) { 2425 en_info(priv, "Turn %s loopback\n", 2426 (features & NETIF_F_LOOPBACK) ? "ON" : "OFF"); 2427 mlx4_en_update_loopback_state(netdev, features); 2428 } 2429 2430 if (reset) { 2431 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config, 2432 features); 2433 if (ret) 2434 return ret; 2435 } 2436 2437 return 0; 2438 } 2439 2440 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2441 { 2442 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2443 struct mlx4_en_dev *mdev = en_priv->mdev; 2444 u64 mac_u64 = mlx4_mac_to_u64(mac); 2445 2446 if (is_multicast_ether_addr(mac)) 2447 return -EINVAL; 2448 2449 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2450 } 2451 2452 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos, 2453 __be16 vlan_proto) 2454 { 2455 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2456 struct mlx4_en_dev *mdev = en_priv->mdev; 2457 2458 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos, 2459 vlan_proto); 2460 } 2461 2462 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, 2463 int max_tx_rate) 2464 { 2465 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2466 struct mlx4_en_dev *mdev = en_priv->mdev; 2467 2468 return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate, 2469 max_tx_rate); 2470 } 2471 2472 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2473 { 2474 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2475 struct mlx4_en_dev *mdev = en_priv->mdev; 2476 2477 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2478 } 2479 2480 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2481 { 2482 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2483 struct mlx4_en_dev *mdev = en_priv->mdev; 2484 2485 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2486 } 2487 2488 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2489 { 2490 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2491 struct mlx4_en_dev *mdev = en_priv->mdev; 2492 2493 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2494 } 2495 2496 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf, 2497 struct ifla_vf_stats *vf_stats) 2498 { 2499 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2500 struct mlx4_en_dev *mdev = en_priv->mdev; 2501 2502 return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats); 2503 } 2504 2505 #define PORT_ID_BYTE_LEN 8 2506 static int mlx4_en_get_phys_port_id(struct net_device *dev, 2507 struct netdev_phys_item_id *ppid) 2508 { 2509 struct mlx4_en_priv *priv = netdev_priv(dev); 2510 struct mlx4_dev *mdev = priv->mdev->dev; 2511 int i; 2512 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2513 2514 if (!phys_port_id) 2515 return -EOPNOTSUPP; 2516 2517 ppid->id_len = sizeof(phys_port_id); 2518 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2519 ppid->id[i] = phys_port_id & 0xff; 2520 phys_port_id >>= 8; 2521 } 2522 return 0; 2523 } 2524 2525 static void mlx4_en_add_vxlan_offloads(struct work_struct *work) 2526 { 2527 int ret; 2528 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2529 vxlan_add_task); 2530 2531 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port); 2532 if (ret) 2533 goto out; 2534 2535 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2536 VXLAN_STEER_BY_OUTER_MAC, 1); 2537 out: 2538 if (ret) { 2539 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2540 return; 2541 } 2542 2543 /* set offloads */ 2544 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 2545 NETIF_F_RXCSUM | 2546 NETIF_F_TSO | NETIF_F_TSO6 | 2547 NETIF_F_GSO_UDP_TUNNEL | 2548 NETIF_F_GSO_UDP_TUNNEL_CSUM | 2549 NETIF_F_GSO_PARTIAL; 2550 } 2551 2552 static void mlx4_en_del_vxlan_offloads(struct work_struct *work) 2553 { 2554 int ret; 2555 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2556 vxlan_del_task); 2557 /* unset offloads */ 2558 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 2559 NETIF_F_RXCSUM | 2560 NETIF_F_TSO | NETIF_F_TSO6 | 2561 NETIF_F_GSO_UDP_TUNNEL | 2562 NETIF_F_GSO_UDP_TUNNEL_CSUM | 2563 NETIF_F_GSO_PARTIAL); 2564 2565 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2566 VXLAN_STEER_BY_OUTER_MAC, 0); 2567 if (ret) 2568 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2569 2570 priv->vxlan_port = 0; 2571 } 2572 2573 static void mlx4_en_add_vxlan_port(struct net_device *dev, 2574 struct udp_tunnel_info *ti) 2575 { 2576 struct mlx4_en_priv *priv = netdev_priv(dev); 2577 __be16 port = ti->port; 2578 __be16 current_port; 2579 2580 if (ti->type != UDP_TUNNEL_TYPE_VXLAN) 2581 return; 2582 2583 if (ti->sa_family != AF_INET) 2584 return; 2585 2586 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2587 return; 2588 2589 current_port = priv->vxlan_port; 2590 if (current_port && current_port != port) { 2591 en_warn(priv, "vxlan port %d configured, can't add port %d\n", 2592 ntohs(current_port), ntohs(port)); 2593 return; 2594 } 2595 2596 priv->vxlan_port = port; 2597 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task); 2598 } 2599 2600 static void mlx4_en_del_vxlan_port(struct net_device *dev, 2601 struct udp_tunnel_info *ti) 2602 { 2603 struct mlx4_en_priv *priv = netdev_priv(dev); 2604 __be16 port = ti->port; 2605 __be16 current_port; 2606 2607 if (ti->type != UDP_TUNNEL_TYPE_VXLAN) 2608 return; 2609 2610 if (ti->sa_family != AF_INET) 2611 return; 2612 2613 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2614 return; 2615 2616 current_port = priv->vxlan_port; 2617 if (current_port != port) { 2618 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port)); 2619 return; 2620 } 2621 2622 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task); 2623 } 2624 2625 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb, 2626 struct net_device *dev, 2627 netdev_features_t features) 2628 { 2629 features = vlan_features_check(skb, features); 2630 features = vxlan_features_check(skb, features); 2631 2632 /* The ConnectX-3 doesn't support outer IPv6 checksums but it does 2633 * support inner IPv6 checksums and segmentation so we need to 2634 * strip that feature if this is an IPv6 encapsulated frame. 2635 */ 2636 if (skb->encapsulation && 2637 (skb->ip_summed == CHECKSUM_PARTIAL)) { 2638 struct mlx4_en_priv *priv = netdev_priv(dev); 2639 2640 if (!priv->vxlan_port || 2641 (ip_hdr(skb)->version != 4) || 2642 (udp_hdr(skb)->dest != priv->vxlan_port)) 2643 features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); 2644 } 2645 2646 return features; 2647 } 2648 2649 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate) 2650 { 2651 struct mlx4_en_priv *priv = netdev_priv(dev); 2652 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][queue_index]; 2653 struct mlx4_update_qp_params params; 2654 int err; 2655 2656 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT)) 2657 return -EOPNOTSUPP; 2658 2659 /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */ 2660 if (maxrate >> 12) { 2661 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS; 2662 params.rate_val = maxrate / 1000; 2663 } else if (maxrate) { 2664 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS; 2665 params.rate_val = maxrate; 2666 } else { /* zero serves to revoke the QP rate-limitation */ 2667 params.rate_unit = 0; 2668 params.rate_val = 0; 2669 } 2670 2671 err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT, 2672 ¶ms); 2673 return err; 2674 } 2675 2676 static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog) 2677 { 2678 struct mlx4_en_priv *priv = netdev_priv(dev); 2679 struct mlx4_en_dev *mdev = priv->mdev; 2680 struct mlx4_en_port_profile new_prof; 2681 struct bpf_prog *old_prog; 2682 struct mlx4_en_priv *tmp; 2683 int tx_changed = 0; 2684 int xdp_ring_num; 2685 int port_up = 0; 2686 int err; 2687 int i; 2688 2689 xdp_ring_num = prog ? priv->rx_ring_num : 0; 2690 2691 /* No need to reconfigure buffers when simply swapping the 2692 * program for a new one. 2693 */ 2694 if (priv->tx_ring_num[TX_XDP] == xdp_ring_num) { 2695 if (prog) { 2696 prog = bpf_prog_add(prog, priv->rx_ring_num - 1); 2697 if (IS_ERR(prog)) 2698 return PTR_ERR(prog); 2699 } 2700 mutex_lock(&mdev->state_lock); 2701 for (i = 0; i < priv->rx_ring_num; i++) { 2702 old_prog = rcu_dereference_protected( 2703 priv->rx_ring[i]->xdp_prog, 2704 lockdep_is_held(&mdev->state_lock)); 2705 rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog); 2706 if (old_prog) 2707 bpf_prog_put(old_prog); 2708 } 2709 mutex_unlock(&mdev->state_lock); 2710 return 0; 2711 } 2712 2713 if (priv->num_frags > 1) { 2714 en_err(priv, "Cannot set XDP if MTU requires multiple frags\n"); 2715 return -EOPNOTSUPP; 2716 } 2717 2718 tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); 2719 if (!tmp) 2720 return -ENOMEM; 2721 2722 if (prog) { 2723 prog = bpf_prog_add(prog, priv->rx_ring_num - 1); 2724 if (IS_ERR(prog)) { 2725 err = PTR_ERR(prog); 2726 goto out; 2727 } 2728 } 2729 2730 mutex_lock(&mdev->state_lock); 2731 memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile)); 2732 new_prof.tx_ring_num[TX_XDP] = xdp_ring_num; 2733 2734 if (priv->tx_ring_num[TX] + xdp_ring_num > MAX_TX_RINGS) { 2735 tx_changed = 1; 2736 new_prof.tx_ring_num[TX] = 2737 MAX_TX_RINGS - ALIGN(xdp_ring_num, MLX4_EN_NUM_UP); 2738 en_warn(priv, "Reducing the number of TX rings, to not exceed the max total rings number.\n"); 2739 } 2740 2741 err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof); 2742 if (err) { 2743 if (prog) 2744 bpf_prog_sub(prog, priv->rx_ring_num - 1); 2745 goto unlock_out; 2746 } 2747 2748 if (priv->port_up) { 2749 port_up = 1; 2750 mlx4_en_stop_port(dev, 1); 2751 } 2752 2753 mlx4_en_safe_replace_resources(priv, tmp); 2754 if (tx_changed) 2755 netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]); 2756 2757 for (i = 0; i < priv->rx_ring_num; i++) { 2758 old_prog = rcu_dereference_protected( 2759 priv->rx_ring[i]->xdp_prog, 2760 lockdep_is_held(&mdev->state_lock)); 2761 rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog); 2762 if (old_prog) 2763 bpf_prog_put(old_prog); 2764 } 2765 2766 if (port_up) { 2767 err = mlx4_en_start_port(dev); 2768 if (err) { 2769 en_err(priv, "Failed starting port %d for XDP change\n", 2770 priv->port); 2771 queue_work(mdev->workqueue, &priv->watchdog_task); 2772 } 2773 } 2774 2775 unlock_out: 2776 mutex_unlock(&mdev->state_lock); 2777 out: 2778 kfree(tmp); 2779 return err; 2780 } 2781 2782 static bool mlx4_xdp_attached(struct net_device *dev) 2783 { 2784 struct mlx4_en_priv *priv = netdev_priv(dev); 2785 2786 return !!priv->tx_ring_num[TX_XDP]; 2787 } 2788 2789 static int mlx4_xdp(struct net_device *dev, struct netdev_xdp *xdp) 2790 { 2791 switch (xdp->command) { 2792 case XDP_SETUP_PROG: 2793 return mlx4_xdp_set(dev, xdp->prog); 2794 case XDP_QUERY_PROG: 2795 xdp->prog_attached = mlx4_xdp_attached(dev); 2796 return 0; 2797 default: 2798 return -EINVAL; 2799 } 2800 } 2801 2802 static const struct net_device_ops mlx4_netdev_ops = { 2803 .ndo_open = mlx4_en_open, 2804 .ndo_stop = mlx4_en_close, 2805 .ndo_start_xmit = mlx4_en_xmit, 2806 .ndo_select_queue = mlx4_en_select_queue, 2807 .ndo_get_stats64 = mlx4_en_get_stats64, 2808 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2809 .ndo_set_mac_address = mlx4_en_set_mac, 2810 .ndo_validate_addr = eth_validate_addr, 2811 .ndo_change_mtu = mlx4_en_change_mtu, 2812 .ndo_do_ioctl = mlx4_en_ioctl, 2813 .ndo_tx_timeout = mlx4_en_tx_timeout, 2814 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2815 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2816 #ifdef CONFIG_NET_POLL_CONTROLLER 2817 .ndo_poll_controller = mlx4_en_netpoll, 2818 #endif 2819 .ndo_set_features = mlx4_en_set_features, 2820 .ndo_fix_features = mlx4_en_fix_features, 2821 .ndo_setup_tc = __mlx4_en_setup_tc, 2822 #ifdef CONFIG_RFS_ACCEL 2823 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2824 #endif 2825 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2826 .ndo_udp_tunnel_add = mlx4_en_add_vxlan_port, 2827 .ndo_udp_tunnel_del = mlx4_en_del_vxlan_port, 2828 .ndo_features_check = mlx4_en_features_check, 2829 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2830 .ndo_xdp = mlx4_xdp, 2831 }; 2832 2833 static const struct net_device_ops mlx4_netdev_ops_master = { 2834 .ndo_open = mlx4_en_open, 2835 .ndo_stop = mlx4_en_close, 2836 .ndo_start_xmit = mlx4_en_xmit, 2837 .ndo_select_queue = mlx4_en_select_queue, 2838 .ndo_get_stats64 = mlx4_en_get_stats64, 2839 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2840 .ndo_set_mac_address = mlx4_en_set_mac, 2841 .ndo_validate_addr = eth_validate_addr, 2842 .ndo_change_mtu = mlx4_en_change_mtu, 2843 .ndo_tx_timeout = mlx4_en_tx_timeout, 2844 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2845 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2846 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2847 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2848 .ndo_set_vf_rate = mlx4_en_set_vf_rate, 2849 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2850 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2851 .ndo_get_vf_stats = mlx4_en_get_vf_stats, 2852 .ndo_get_vf_config = mlx4_en_get_vf_config, 2853 #ifdef CONFIG_NET_POLL_CONTROLLER 2854 .ndo_poll_controller = mlx4_en_netpoll, 2855 #endif 2856 .ndo_set_features = mlx4_en_set_features, 2857 .ndo_fix_features = mlx4_en_fix_features, 2858 .ndo_setup_tc = __mlx4_en_setup_tc, 2859 #ifdef CONFIG_RFS_ACCEL 2860 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2861 #endif 2862 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2863 .ndo_udp_tunnel_add = mlx4_en_add_vxlan_port, 2864 .ndo_udp_tunnel_del = mlx4_en_del_vxlan_port, 2865 .ndo_features_check = mlx4_en_features_check, 2866 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2867 .ndo_xdp = mlx4_xdp, 2868 }; 2869 2870 struct mlx4_en_bond { 2871 struct work_struct work; 2872 struct mlx4_en_priv *priv; 2873 int is_bonded; 2874 struct mlx4_port_map port_map; 2875 }; 2876 2877 static void mlx4_en_bond_work(struct work_struct *work) 2878 { 2879 struct mlx4_en_bond *bond = container_of(work, 2880 struct mlx4_en_bond, 2881 work); 2882 int err = 0; 2883 struct mlx4_dev *dev = bond->priv->mdev->dev; 2884 2885 if (bond->is_bonded) { 2886 if (!mlx4_is_bonded(dev)) { 2887 err = mlx4_bond(dev); 2888 if (err) 2889 en_err(bond->priv, "Fail to bond device\n"); 2890 } 2891 if (!err) { 2892 err = mlx4_port_map_set(dev, &bond->port_map); 2893 if (err) 2894 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n", 2895 bond->port_map.port1, 2896 bond->port_map.port2, 2897 err); 2898 } 2899 } else if (mlx4_is_bonded(dev)) { 2900 err = mlx4_unbond(dev); 2901 if (err) 2902 en_err(bond->priv, "Fail to unbond device\n"); 2903 } 2904 dev_put(bond->priv->dev); 2905 kfree(bond); 2906 } 2907 2908 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded, 2909 u8 v2p_p1, u8 v2p_p2) 2910 { 2911 struct mlx4_en_bond *bond = NULL; 2912 2913 bond = kzalloc(sizeof(*bond), GFP_ATOMIC); 2914 if (!bond) 2915 return -ENOMEM; 2916 2917 INIT_WORK(&bond->work, mlx4_en_bond_work); 2918 bond->priv = priv; 2919 bond->is_bonded = is_bonded; 2920 bond->port_map.port1 = v2p_p1; 2921 bond->port_map.port2 = v2p_p2; 2922 dev_hold(priv->dev); 2923 queue_work(priv->mdev->workqueue, &bond->work); 2924 return 0; 2925 } 2926 2927 int mlx4_en_netdev_event(struct notifier_block *this, 2928 unsigned long event, void *ptr) 2929 { 2930 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 2931 u8 port = 0; 2932 struct mlx4_en_dev *mdev; 2933 struct mlx4_dev *dev; 2934 int i, num_eth_ports = 0; 2935 bool do_bond = true; 2936 struct mlx4_en_priv *priv; 2937 u8 v2p_port1 = 0; 2938 u8 v2p_port2 = 0; 2939 2940 if (!net_eq(dev_net(ndev), &init_net)) 2941 return NOTIFY_DONE; 2942 2943 mdev = container_of(this, struct mlx4_en_dev, nb); 2944 dev = mdev->dev; 2945 2946 /* Go into this mode only when two network devices set on two ports 2947 * of the same mlx4 device are slaves of the same bonding master 2948 */ 2949 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { 2950 ++num_eth_ports; 2951 if (!port && (mdev->pndev[i] == ndev)) 2952 port = i; 2953 mdev->upper[i] = mdev->pndev[i] ? 2954 netdev_master_upper_dev_get(mdev->pndev[i]) : NULL; 2955 /* condition not met: network device is a slave */ 2956 if (!mdev->upper[i]) 2957 do_bond = false; 2958 if (num_eth_ports < 2) 2959 continue; 2960 /* condition not met: same master */ 2961 if (mdev->upper[i] != mdev->upper[i-1]) 2962 do_bond = false; 2963 } 2964 /* condition not met: 2 salves */ 2965 do_bond = (num_eth_ports == 2) ? do_bond : false; 2966 2967 /* handle only events that come with enough info */ 2968 if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port) 2969 return NOTIFY_DONE; 2970 2971 priv = netdev_priv(ndev); 2972 if (do_bond) { 2973 struct netdev_notifier_bonding_info *notifier_info = ptr; 2974 struct netdev_bonding_info *bonding_info = 2975 ¬ifier_info->bonding_info; 2976 2977 /* required mode 1, 2 or 4 */ 2978 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) && 2979 (bonding_info->master.bond_mode != BOND_MODE_XOR) && 2980 (bonding_info->master.bond_mode != BOND_MODE_8023AD)) 2981 do_bond = false; 2982 2983 /* require exactly 2 slaves */ 2984 if (bonding_info->master.num_slaves != 2) 2985 do_bond = false; 2986 2987 /* calc v2p */ 2988 if (do_bond) { 2989 if (bonding_info->master.bond_mode == 2990 BOND_MODE_ACTIVEBACKUP) { 2991 /* in active-backup mode virtual ports are 2992 * mapped to the physical port of the active 2993 * slave */ 2994 if (bonding_info->slave.state == 2995 BOND_STATE_BACKUP) { 2996 if (port == 1) { 2997 v2p_port1 = 2; 2998 v2p_port2 = 2; 2999 } else { 3000 v2p_port1 = 1; 3001 v2p_port2 = 1; 3002 } 3003 } else { /* BOND_STATE_ACTIVE */ 3004 if (port == 1) { 3005 v2p_port1 = 1; 3006 v2p_port2 = 1; 3007 } else { 3008 v2p_port1 = 2; 3009 v2p_port2 = 2; 3010 } 3011 } 3012 } else { /* Active-Active */ 3013 /* in active-active mode a virtual port is 3014 * mapped to the native physical port if and only 3015 * if the physical port is up */ 3016 __s8 link = bonding_info->slave.link; 3017 3018 if (port == 1) 3019 v2p_port2 = 2; 3020 else 3021 v2p_port1 = 1; 3022 if ((link == BOND_LINK_UP) || 3023 (link == BOND_LINK_FAIL)) { 3024 if (port == 1) 3025 v2p_port1 = 1; 3026 else 3027 v2p_port2 = 2; 3028 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */ 3029 if (port == 1) 3030 v2p_port1 = 2; 3031 else 3032 v2p_port2 = 1; 3033 } 3034 } 3035 } 3036 } 3037 3038 mlx4_en_queue_bond_work(priv, do_bond, 3039 v2p_port1, v2p_port2); 3040 3041 return NOTIFY_DONE; 3042 } 3043 3044 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev, 3045 struct mlx4_en_stats_bitmap *stats_bitmap, 3046 u8 rx_ppp, u8 rx_pause, 3047 u8 tx_ppp, u8 tx_pause) 3048 { 3049 int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS; 3050 3051 if (!mlx4_is_slave(dev) && 3052 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) { 3053 mutex_lock(&stats_bitmap->mutex); 3054 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS); 3055 3056 if (rx_ppp) 3057 bitmap_set(stats_bitmap->bitmap, last_i, 3058 NUM_FLOW_PRIORITY_STATS_RX); 3059 last_i += NUM_FLOW_PRIORITY_STATS_RX; 3060 3061 if (rx_pause && !(rx_ppp)) 3062 bitmap_set(stats_bitmap->bitmap, last_i, 3063 NUM_FLOW_STATS_RX); 3064 last_i += NUM_FLOW_STATS_RX; 3065 3066 if (tx_ppp) 3067 bitmap_set(stats_bitmap->bitmap, last_i, 3068 NUM_FLOW_PRIORITY_STATS_TX); 3069 last_i += NUM_FLOW_PRIORITY_STATS_TX; 3070 3071 if (tx_pause && !(tx_ppp)) 3072 bitmap_set(stats_bitmap->bitmap, last_i, 3073 NUM_FLOW_STATS_TX); 3074 last_i += NUM_FLOW_STATS_TX; 3075 3076 mutex_unlock(&stats_bitmap->mutex); 3077 } 3078 } 3079 3080 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev, 3081 struct mlx4_en_stats_bitmap *stats_bitmap, 3082 u8 rx_ppp, u8 rx_pause, 3083 u8 tx_ppp, u8 tx_pause) 3084 { 3085 int last_i = 0; 3086 3087 mutex_init(&stats_bitmap->mutex); 3088 bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS); 3089 3090 if (mlx4_is_slave(dev)) { 3091 bitmap_set(stats_bitmap->bitmap, last_i + 3092 MLX4_FIND_NETDEV_STAT(rx_packets), 1); 3093 bitmap_set(stats_bitmap->bitmap, last_i + 3094 MLX4_FIND_NETDEV_STAT(tx_packets), 1); 3095 bitmap_set(stats_bitmap->bitmap, last_i + 3096 MLX4_FIND_NETDEV_STAT(rx_bytes), 1); 3097 bitmap_set(stats_bitmap->bitmap, last_i + 3098 MLX4_FIND_NETDEV_STAT(tx_bytes), 1); 3099 bitmap_set(stats_bitmap->bitmap, last_i + 3100 MLX4_FIND_NETDEV_STAT(rx_dropped), 1); 3101 bitmap_set(stats_bitmap->bitmap, last_i + 3102 MLX4_FIND_NETDEV_STAT(tx_dropped), 1); 3103 } else { 3104 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS); 3105 } 3106 last_i += NUM_MAIN_STATS; 3107 3108 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS); 3109 last_i += NUM_PORT_STATS; 3110 3111 if (mlx4_is_master(dev)) 3112 bitmap_set(stats_bitmap->bitmap, last_i, 3113 NUM_PF_STATS); 3114 last_i += NUM_PF_STATS; 3115 3116 mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap, 3117 rx_ppp, rx_pause, 3118 tx_ppp, tx_pause); 3119 last_i += NUM_FLOW_STATS; 3120 3121 if (!mlx4_is_slave(dev)) 3122 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS); 3123 last_i += NUM_PKT_STATS; 3124 3125 bitmap_set(stats_bitmap->bitmap, last_i, NUM_XDP_STATS); 3126 last_i += NUM_XDP_STATS; 3127 } 3128 3129 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 3130 struct mlx4_en_port_profile *prof) 3131 { 3132 struct net_device *dev; 3133 struct mlx4_en_priv *priv; 3134 int i, t; 3135 int err; 3136 3137 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 3138 MAX_TX_RINGS, MAX_RX_RINGS); 3139 if (dev == NULL) 3140 return -ENOMEM; 3141 3142 netif_set_real_num_tx_queues(dev, prof->tx_ring_num[TX]); 3143 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 3144 3145 SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev); 3146 dev->dev_port = port - 1; 3147 3148 /* 3149 * Initialize driver private data 3150 */ 3151 3152 priv = netdev_priv(dev); 3153 memset(priv, 0, sizeof(struct mlx4_en_priv)); 3154 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 3155 spin_lock_init(&priv->stats_lock); 3156 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 3157 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 3158 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 3159 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 3160 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 3161 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads); 3162 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads); 3163 #ifdef CONFIG_RFS_ACCEL 3164 INIT_LIST_HEAD(&priv->filters); 3165 spin_lock_init(&priv->filters_lock); 3166 #endif 3167 3168 priv->dev = dev; 3169 priv->mdev = mdev; 3170 priv->ddev = &mdev->pdev->dev; 3171 priv->prof = prof; 3172 priv->port = port; 3173 priv->port_up = false; 3174 priv->flags = prof->flags; 3175 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME; 3176 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 3177 MLX4_WQE_CTRL_SOLICITED); 3178 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 3179 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK; 3180 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key)); 3181 3182 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { 3183 priv->tx_ring_num[t] = prof->tx_ring_num[t]; 3184 if (!priv->tx_ring_num[t]) 3185 continue; 3186 3187 priv->tx_ring[t] = kzalloc(sizeof(struct mlx4_en_tx_ring *) * 3188 MAX_TX_RINGS, GFP_KERNEL); 3189 if (!priv->tx_ring[t]) { 3190 err = -ENOMEM; 3191 goto err_free_tx; 3192 } 3193 priv->tx_cq[t] = kzalloc(sizeof(struct mlx4_en_cq *) * 3194 MAX_TX_RINGS, GFP_KERNEL); 3195 if (!priv->tx_cq[t]) { 3196 kfree(priv->tx_ring[t]); 3197 err = -ENOMEM; 3198 goto out; 3199 } 3200 } 3201 priv->rx_ring_num = prof->rx_ring_num; 3202 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 3203 priv->cqe_size = mdev->dev->caps.cqe_size; 3204 priv->mac_index = -1; 3205 priv->msg_enable = MLX4_EN_MSG_LEVEL; 3206 #ifdef CONFIG_MLX4_EN_DCB 3207 if (!mlx4_is_slave(priv->mdev->dev)) { 3208 priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST | 3209 DCB_CAP_DCBX_VER_IEEE; 3210 priv->flags |= MLX4_EN_DCB_ENABLED; 3211 priv->cee_config.pfc_state = false; 3212 3213 for (i = 0; i < MLX4_EN_NUM_UP; i++) 3214 priv->cee_config.dcb_pfc[i] = pfc_disabled; 3215 3216 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) { 3217 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 3218 } else { 3219 en_info(priv, "enabling only PFC DCB ops\n"); 3220 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 3221 } 3222 } 3223 #endif 3224 3225 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 3226 INIT_HLIST_HEAD(&priv->mac_hash[i]); 3227 3228 /* Query for default mac and max mtu */ 3229 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 3230 3231 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] & 3232 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP) 3233 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP; 3234 3235 /* Set default MAC */ 3236 dev->addr_len = ETH_ALEN; 3237 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 3238 if (!is_valid_ether_addr(dev->dev_addr)) { 3239 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 3240 priv->port, dev->dev_addr); 3241 err = -EINVAL; 3242 goto out; 3243 } else if (mlx4_is_slave(priv->mdev->dev) && 3244 (priv->mdev->dev->port_random_macs & 1 << priv->port)) { 3245 /* Random MAC was assigned in mlx4_slave_cap 3246 * in mlx4_core module 3247 */ 3248 dev->addr_assign_type |= NET_ADDR_RANDOM; 3249 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 3250 } 3251 3252 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac)); 3253 3254 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 3255 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 3256 err = mlx4_en_alloc_resources(priv); 3257 if (err) 3258 goto out; 3259 3260 /* Initialize time stamping config */ 3261 priv->hwtstamp_config.flags = 0; 3262 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 3263 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 3264 3265 /* Allocate page for receive rings */ 3266 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 3267 MLX4_EN_PAGE_SIZE); 3268 if (err) { 3269 en_err(priv, "Failed to allocate page for rx qps\n"); 3270 goto out; 3271 } 3272 priv->allocated = 1; 3273 3274 /* 3275 * Initialize netdev entry points 3276 */ 3277 if (mlx4_is_master(priv->mdev->dev)) 3278 dev->netdev_ops = &mlx4_netdev_ops_master; 3279 else 3280 dev->netdev_ops = &mlx4_netdev_ops; 3281 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 3282 netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]); 3283 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 3284 3285 dev->ethtool_ops = &mlx4_en_ethtool_ops; 3286 3287 /* 3288 * Set driver features 3289 */ 3290 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 3291 if (mdev->LSO_support) 3292 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 3293 3294 dev->vlan_features = dev->hw_features; 3295 3296 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 3297 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 3298 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 3299 NETIF_F_HW_VLAN_CTAG_FILTER; 3300 dev->hw_features |= NETIF_F_LOOPBACK | 3301 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 3302 3303 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) { 3304 dev->features |= NETIF_F_HW_VLAN_STAG_RX | 3305 NETIF_F_HW_VLAN_STAG_FILTER; 3306 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX; 3307 } 3308 3309 if (mlx4_is_slave(mdev->dev)) { 3310 bool vlan_offload_disabled; 3311 int phv; 3312 3313 err = get_phv_bit(mdev->dev, port, &phv); 3314 if (!err && phv) { 3315 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 3316 priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV; 3317 } 3318 err = mlx4_get_is_vlan_offload_disabled(mdev->dev, port, 3319 &vlan_offload_disabled); 3320 if (!err && vlan_offload_disabled) { 3321 dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX | 3322 NETIF_F_HW_VLAN_CTAG_RX | 3323 NETIF_F_HW_VLAN_STAG_TX | 3324 NETIF_F_HW_VLAN_STAG_RX); 3325 dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX | 3326 NETIF_F_HW_VLAN_CTAG_RX | 3327 NETIF_F_HW_VLAN_STAG_TX | 3328 NETIF_F_HW_VLAN_STAG_RX); 3329 } 3330 } else { 3331 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN && 3332 !(mdev->dev->caps.flags2 & 3333 MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 3334 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 3335 } 3336 3337 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) 3338 dev->hw_features |= NETIF_F_RXFCS; 3339 3340 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS) 3341 dev->hw_features |= NETIF_F_RXALL; 3342 3343 if (mdev->dev->caps.steering_mode == 3344 MLX4_STEERING_MODE_DEVICE_MANAGED && 3345 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC) 3346 dev->hw_features |= NETIF_F_NTUPLE; 3347 3348 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 3349 dev->priv_flags |= IFF_UNICAST_FLT; 3350 3351 /* Setting a default hash function value */ 3352 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) { 3353 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 3354 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) { 3355 priv->rss_hash_fn = ETH_RSS_HASH_XOR; 3356 } else { 3357 en_warn(priv, 3358 "No RSS hash capabilities exposed, using Toeplitz\n"); 3359 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 3360 } 3361 3362 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 3363 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL | 3364 NETIF_F_GSO_UDP_TUNNEL_CSUM | 3365 NETIF_F_GSO_PARTIAL; 3366 dev->features |= NETIF_F_GSO_UDP_TUNNEL | 3367 NETIF_F_GSO_UDP_TUNNEL_CSUM | 3368 NETIF_F_GSO_PARTIAL; 3369 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM; 3370 } 3371 3372 /* MTU range: 46 - hw-specific max */ 3373 dev->min_mtu = MLX4_EN_MIN_MTU; 3374 dev->max_mtu = priv->max_mtu; 3375 3376 mdev->pndev[port] = dev; 3377 mdev->upper[port] = NULL; 3378 3379 netif_carrier_off(dev); 3380 mlx4_en_set_default_moderation(priv); 3381 3382 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num[TX]); 3383 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 3384 3385 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 3386 3387 /* Configure port */ 3388 mlx4_en_calc_rx_buf(dev); 3389 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 3390 priv->rx_skb_size + ETH_FCS_LEN, 3391 prof->tx_pause, prof->tx_ppp, 3392 prof->rx_pause, prof->rx_ppp); 3393 if (err) { 3394 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 3395 priv->port, err); 3396 goto out; 3397 } 3398 3399 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 3400 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 3401 if (err) { 3402 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 3403 err); 3404 goto out; 3405 } 3406 } 3407 3408 /* Init port */ 3409 en_warn(priv, "Initializing port\n"); 3410 err = mlx4_INIT_PORT(mdev->dev, priv->port); 3411 if (err) { 3412 en_err(priv, "Failed Initializing port\n"); 3413 goto out; 3414 } 3415 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 3416 3417 /* Initialize time stamp mechanism */ 3418 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 3419 mlx4_en_init_timestamp(mdev); 3420 3421 queue_delayed_work(mdev->workqueue, &priv->service_task, 3422 SERVICE_TASK_DELAY); 3423 3424 mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap, 3425 mdev->profile.prof[priv->port].rx_ppp, 3426 mdev->profile.prof[priv->port].rx_pause, 3427 mdev->profile.prof[priv->port].tx_ppp, 3428 mdev->profile.prof[priv->port].tx_pause); 3429 3430 err = register_netdev(dev); 3431 if (err) { 3432 en_err(priv, "Netdev registration failed for port %d\n", port); 3433 goto out; 3434 } 3435 3436 priv->registered = 1; 3437 devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port), 3438 dev); 3439 3440 return 0; 3441 3442 err_free_tx: 3443 while (t--) { 3444 kfree(priv->tx_ring[t]); 3445 kfree(priv->tx_cq[t]); 3446 } 3447 out: 3448 mlx4_en_destroy_netdev(dev); 3449 return err; 3450 } 3451 3452 int mlx4_en_reset_config(struct net_device *dev, 3453 struct hwtstamp_config ts_config, 3454 netdev_features_t features) 3455 { 3456 struct mlx4_en_priv *priv = netdev_priv(dev); 3457 struct mlx4_en_dev *mdev = priv->mdev; 3458 struct mlx4_en_port_profile new_prof; 3459 struct mlx4_en_priv *tmp; 3460 int port_up = 0; 3461 int err = 0; 3462 3463 if (priv->hwtstamp_config.tx_type == ts_config.tx_type && 3464 priv->hwtstamp_config.rx_filter == ts_config.rx_filter && 3465 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3466 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) 3467 return 0; /* Nothing to change */ 3468 3469 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3470 (features & NETIF_F_HW_VLAN_CTAG_RX) && 3471 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) { 3472 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n"); 3473 return -EINVAL; 3474 } 3475 3476 tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); 3477 if (!tmp) 3478 return -ENOMEM; 3479 3480 mutex_lock(&mdev->state_lock); 3481 3482 memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile)); 3483 memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config)); 3484 3485 err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof); 3486 if (err) 3487 goto out; 3488 3489 if (priv->port_up) { 3490 port_up = 1; 3491 mlx4_en_stop_port(dev, 1); 3492 } 3493 3494 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n", 3495 ts_config.rx_filter, 3496 !!(features & NETIF_F_HW_VLAN_CTAG_RX)); 3497 3498 mlx4_en_safe_replace_resources(priv, tmp); 3499 3500 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 3501 if (features & NETIF_F_HW_VLAN_CTAG_RX) 3502 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3503 else 3504 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3505 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) { 3506 /* RX time-stamping is OFF, update the RX vlan offload 3507 * to the latest wanted state 3508 */ 3509 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX) 3510 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3511 else 3512 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3513 } 3514 3515 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) { 3516 if (features & NETIF_F_RXFCS) 3517 dev->features |= NETIF_F_RXFCS; 3518 else 3519 dev->features &= ~NETIF_F_RXFCS; 3520 } 3521 3522 /* RX vlan offload and RX time-stamping can't co-exist ! 3523 * Regardless of the caller's choice, 3524 * Turn Off RX vlan offload in case of time-stamping is ON 3525 */ 3526 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) { 3527 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 3528 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n"); 3529 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3530 } 3531 3532 if (port_up) { 3533 err = mlx4_en_start_port(dev); 3534 if (err) 3535 en_err(priv, "Failed starting port\n"); 3536 } 3537 3538 out: 3539 mutex_unlock(&mdev->state_lock); 3540 kfree(tmp); 3541 if (!err) 3542 netdev_features_change(dev); 3543 return err; 3544 } 3545