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 static void mlx4_en_filter_work(struct work_struct *work) 133 { 134 struct mlx4_en_filter *filter = container_of(work, 135 struct mlx4_en_filter, 136 work); 137 struct mlx4_en_priv *priv = filter->priv; 138 struct mlx4_spec_list spec_tcp_udp = { 139 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto), 140 { 141 .tcp_udp = { 142 .dst_port = filter->dst_port, 143 .dst_port_msk = (__force __be16)-1, 144 .src_port = filter->src_port, 145 .src_port_msk = (__force __be16)-1, 146 }, 147 }, 148 }; 149 struct mlx4_spec_list spec_ip = { 150 .id = MLX4_NET_TRANS_RULE_ID_IPV4, 151 { 152 .ipv4 = { 153 .dst_ip = filter->dst_ip, 154 .dst_ip_msk = (__force __be32)-1, 155 .src_ip = filter->src_ip, 156 .src_ip_msk = (__force __be32)-1, 157 }, 158 }, 159 }; 160 struct mlx4_spec_list spec_eth = { 161 .id = MLX4_NET_TRANS_RULE_ID_ETH, 162 }; 163 struct mlx4_net_trans_rule rule = { 164 .list = LIST_HEAD_INIT(rule.list), 165 .queue_mode = MLX4_NET_TRANS_Q_LIFO, 166 .exclusive = 1, 167 .allow_loopback = 1, 168 .promisc_mode = MLX4_FS_REGULAR, 169 .port = priv->port, 170 .priority = MLX4_DOMAIN_RFS, 171 }; 172 int rc; 173 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 174 175 if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) { 176 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n", 177 filter->ip_proto); 178 goto ignore; 179 } 180 list_add_tail(&spec_eth.list, &rule.list); 181 list_add_tail(&spec_ip.list, &rule.list); 182 list_add_tail(&spec_tcp_udp.list, &rule.list); 183 184 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn; 185 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN); 186 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 187 188 filter->activated = 0; 189 190 if (filter->reg_id) { 191 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 192 if (rc && rc != -ENOENT) 193 en_err(priv, "Error detaching flow. rc = %d\n", rc); 194 } 195 196 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id); 197 if (rc) 198 en_err(priv, "Error attaching flow. err = %d\n", rc); 199 200 ignore: 201 mlx4_en_filter_rfs_expire(priv); 202 203 filter->activated = 1; 204 } 205 206 static inline struct hlist_head * 207 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 208 __be16 src_port, __be16 dst_port) 209 { 210 unsigned long l; 211 int bucket_idx; 212 213 l = (__force unsigned long)src_port | 214 ((__force unsigned long)dst_port << 2); 215 l ^= (__force unsigned long)(src_ip ^ dst_ip); 216 217 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT); 218 219 return &priv->filter_hash[bucket_idx]; 220 } 221 222 static struct mlx4_en_filter * 223 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip, 224 __be32 dst_ip, u8 ip_proto, __be16 src_port, 225 __be16 dst_port, u32 flow_id) 226 { 227 struct mlx4_en_filter *filter = NULL; 228 229 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC); 230 if (!filter) 231 return NULL; 232 233 filter->priv = priv; 234 filter->rxq_index = rxq_index; 235 INIT_WORK(&filter->work, mlx4_en_filter_work); 236 237 filter->src_ip = src_ip; 238 filter->dst_ip = dst_ip; 239 filter->ip_proto = ip_proto; 240 filter->src_port = src_port; 241 filter->dst_port = dst_port; 242 243 filter->flow_id = flow_id; 244 245 filter->id = priv->last_filter_id++ % RPS_NO_FILTER; 246 247 list_add_tail(&filter->next, &priv->filters); 248 hlist_add_head(&filter->filter_chain, 249 filter_hash_bucket(priv, src_ip, dst_ip, src_port, 250 dst_port)); 251 252 return filter; 253 } 254 255 static void mlx4_en_filter_free(struct mlx4_en_filter *filter) 256 { 257 struct mlx4_en_priv *priv = filter->priv; 258 int rc; 259 260 list_del(&filter->next); 261 262 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 263 if (rc && rc != -ENOENT) 264 en_err(priv, "Error detaching flow. rc = %d\n", rc); 265 266 kfree(filter); 267 } 268 269 static inline struct mlx4_en_filter * 270 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 271 u8 ip_proto, __be16 src_port, __be16 dst_port) 272 { 273 struct mlx4_en_filter *filter; 274 struct mlx4_en_filter *ret = NULL; 275 276 hlist_for_each_entry(filter, 277 filter_hash_bucket(priv, src_ip, dst_ip, 278 src_port, dst_port), 279 filter_chain) { 280 if (filter->src_ip == src_ip && 281 filter->dst_ip == dst_ip && 282 filter->ip_proto == ip_proto && 283 filter->src_port == src_port && 284 filter->dst_port == dst_port) { 285 ret = filter; 286 break; 287 } 288 } 289 290 return ret; 291 } 292 293 static int 294 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 295 u16 rxq_index, u32 flow_id) 296 { 297 struct mlx4_en_priv *priv = netdev_priv(net_dev); 298 struct mlx4_en_filter *filter; 299 const struct iphdr *ip; 300 const __be16 *ports; 301 u8 ip_proto; 302 __be32 src_ip; 303 __be32 dst_ip; 304 __be16 src_port; 305 __be16 dst_port; 306 int nhoff = skb_network_offset(skb); 307 int ret = 0; 308 309 if (skb->protocol != htons(ETH_P_IP)) 310 return -EPROTONOSUPPORT; 311 312 ip = (const struct iphdr *)(skb->data + nhoff); 313 if (ip_is_fragment(ip)) 314 return -EPROTONOSUPPORT; 315 316 if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP)) 317 return -EPROTONOSUPPORT; 318 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); 319 320 ip_proto = ip->protocol; 321 src_ip = ip->saddr; 322 dst_ip = ip->daddr; 323 src_port = ports[0]; 324 dst_port = ports[1]; 325 326 spin_lock_bh(&priv->filters_lock); 327 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto, 328 src_port, dst_port); 329 if (filter) { 330 if (filter->rxq_index == rxq_index) 331 goto out; 332 333 filter->rxq_index = rxq_index; 334 } else { 335 filter = mlx4_en_filter_alloc(priv, rxq_index, 336 src_ip, dst_ip, ip_proto, 337 src_port, dst_port, flow_id); 338 if (!filter) { 339 ret = -ENOMEM; 340 goto err; 341 } 342 } 343 344 queue_work(priv->mdev->workqueue, &filter->work); 345 346 out: 347 ret = filter->id; 348 err: 349 spin_unlock_bh(&priv->filters_lock); 350 351 return ret; 352 } 353 354 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv) 355 { 356 struct mlx4_en_filter *filter, *tmp; 357 LIST_HEAD(del_list); 358 359 spin_lock_bh(&priv->filters_lock); 360 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 361 list_move(&filter->next, &del_list); 362 hlist_del(&filter->filter_chain); 363 } 364 spin_unlock_bh(&priv->filters_lock); 365 366 list_for_each_entry_safe(filter, tmp, &del_list, next) { 367 cancel_work_sync(&filter->work); 368 mlx4_en_filter_free(filter); 369 } 370 } 371 372 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv) 373 { 374 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL; 375 LIST_HEAD(del_list); 376 int i = 0; 377 378 spin_lock_bh(&priv->filters_lock); 379 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 380 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA) 381 break; 382 383 if (filter->activated && 384 !work_pending(&filter->work) && 385 rps_may_expire_flow(priv->dev, 386 filter->rxq_index, filter->flow_id, 387 filter->id)) { 388 list_move(&filter->next, &del_list); 389 hlist_del(&filter->filter_chain); 390 } else 391 last_filter = filter; 392 393 i++; 394 } 395 396 if (last_filter && (&last_filter->next != priv->filters.next)) 397 list_move(&priv->filters, &last_filter->next); 398 399 spin_unlock_bh(&priv->filters_lock); 400 401 list_for_each_entry_safe(filter, tmp, &del_list, next) 402 mlx4_en_filter_free(filter); 403 } 404 #endif 405 406 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev, 407 __be16 proto, u16 vid) 408 { 409 struct mlx4_en_priv *priv = netdev_priv(dev); 410 struct mlx4_en_dev *mdev = priv->mdev; 411 int err; 412 int idx; 413 414 en_dbg(HW, priv, "adding VLAN:%d\n", vid); 415 416 set_bit(vid, priv->active_vlans); 417 418 /* Add VID to port VLAN filter */ 419 mutex_lock(&mdev->state_lock); 420 if (mdev->device_up && priv->port_up) { 421 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 422 if (err) { 423 en_err(priv, "Failed configuring VLAN filter\n"); 424 goto out; 425 } 426 } 427 err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx); 428 if (err) 429 en_dbg(HW, priv, "Failed adding vlan %d\n", vid); 430 431 out: 432 mutex_unlock(&mdev->state_lock); 433 return err; 434 } 435 436 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, 437 __be16 proto, u16 vid) 438 { 439 struct mlx4_en_priv *priv = netdev_priv(dev); 440 struct mlx4_en_dev *mdev = priv->mdev; 441 int err = 0; 442 443 en_dbg(HW, priv, "Killing VID:%d\n", vid); 444 445 clear_bit(vid, priv->active_vlans); 446 447 /* Remove VID from port VLAN filter */ 448 mutex_lock(&mdev->state_lock); 449 mlx4_unregister_vlan(mdev->dev, priv->port, vid); 450 451 if (mdev->device_up && priv->port_up) { 452 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 453 if (err) 454 en_err(priv, "Failed configuring VLAN filter\n"); 455 } 456 mutex_unlock(&mdev->state_lock); 457 458 return err; 459 } 460 461 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) 462 { 463 int i; 464 for (i = ETH_ALEN - 1; i >= 0; --i) { 465 dst_mac[i] = src_mac & 0xff; 466 src_mac >>= 8; 467 } 468 memset(&dst_mac[ETH_ALEN], 0, 2); 469 } 470 471 472 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr, 473 int qpn, u64 *reg_id) 474 { 475 int err; 476 477 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || 478 priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) 479 return 0; /* do nothing */ 480 481 err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn, 482 MLX4_DOMAIN_NIC, reg_id); 483 if (err) { 484 en_err(priv, "failed to add vxlan steering rule, err %d\n", err); 485 return err; 486 } 487 en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id); 488 return 0; 489 } 490 491 492 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv, 493 unsigned char *mac, int *qpn, u64 *reg_id) 494 { 495 struct mlx4_en_dev *mdev = priv->mdev; 496 struct mlx4_dev *dev = mdev->dev; 497 int err; 498 499 switch (dev->caps.steering_mode) { 500 case MLX4_STEERING_MODE_B0: { 501 struct mlx4_qp qp; 502 u8 gid[16] = {0}; 503 504 qp.qpn = *qpn; 505 memcpy(&gid[10], mac, ETH_ALEN); 506 gid[5] = priv->port; 507 508 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH); 509 break; 510 } 511 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 512 struct mlx4_spec_list spec_eth = { {NULL} }; 513 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 514 515 struct mlx4_net_trans_rule rule = { 516 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 517 .exclusive = 0, 518 .allow_loopback = 1, 519 .promisc_mode = MLX4_FS_REGULAR, 520 .priority = MLX4_DOMAIN_NIC, 521 }; 522 523 rule.port = priv->port; 524 rule.qpn = *qpn; 525 INIT_LIST_HEAD(&rule.list); 526 527 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH; 528 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN); 529 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 530 list_add_tail(&spec_eth.list, &rule.list); 531 532 err = mlx4_flow_attach(dev, &rule, reg_id); 533 break; 534 } 535 default: 536 return -EINVAL; 537 } 538 if (err) 539 en_warn(priv, "Failed Attaching Unicast\n"); 540 541 return err; 542 } 543 544 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv, 545 unsigned char *mac, int qpn, u64 reg_id) 546 { 547 struct mlx4_en_dev *mdev = priv->mdev; 548 struct mlx4_dev *dev = mdev->dev; 549 550 switch (dev->caps.steering_mode) { 551 case MLX4_STEERING_MODE_B0: { 552 struct mlx4_qp qp; 553 u8 gid[16] = {0}; 554 555 qp.qpn = qpn; 556 memcpy(&gid[10], mac, ETH_ALEN); 557 gid[5] = priv->port; 558 559 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH); 560 break; 561 } 562 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 563 mlx4_flow_detach(dev, reg_id); 564 break; 565 } 566 default: 567 en_err(priv, "Invalid steering mode.\n"); 568 } 569 } 570 571 static int mlx4_en_get_qp(struct mlx4_en_priv *priv) 572 { 573 struct mlx4_en_dev *mdev = priv->mdev; 574 struct mlx4_dev *dev = mdev->dev; 575 int index = 0; 576 int err = 0; 577 int *qpn = &priv->base_qpn; 578 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 579 580 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n", 581 priv->dev->dev_addr); 582 index = mlx4_register_mac(dev, priv->port, mac); 583 if (index < 0) { 584 err = index; 585 en_err(priv, "Failed adding MAC: %pM\n", 586 priv->dev->dev_addr); 587 return err; 588 } 589 590 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 591 int base_qpn = mlx4_get_base_qpn(dev, priv->port); 592 *qpn = base_qpn + index; 593 return 0; 594 } 595 596 err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP); 597 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); 598 if (err) { 599 en_err(priv, "Failed to reserve qp for mac registration\n"); 600 mlx4_unregister_mac(dev, priv->port, mac); 601 return err; 602 } 603 604 return 0; 605 } 606 607 static void mlx4_en_put_qp(struct mlx4_en_priv *priv) 608 { 609 struct mlx4_en_dev *mdev = priv->mdev; 610 struct mlx4_dev *dev = mdev->dev; 611 int qpn = priv->base_qpn; 612 613 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 614 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); 615 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 616 priv->dev->dev_addr); 617 mlx4_unregister_mac(dev, priv->port, mac); 618 } else { 619 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", 620 priv->port, qpn); 621 mlx4_qp_release_range(dev, qpn, 1); 622 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 623 } 624 } 625 626 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, 627 unsigned char *new_mac, unsigned char *prev_mac) 628 { 629 struct mlx4_en_dev *mdev = priv->mdev; 630 struct mlx4_dev *dev = mdev->dev; 631 int err = 0; 632 u64 new_mac_u64 = mlx4_mac_to_u64(new_mac); 633 634 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { 635 struct hlist_head *bucket; 636 unsigned int mac_hash; 637 struct mlx4_mac_entry *entry; 638 struct hlist_node *tmp; 639 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac); 640 641 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; 642 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 643 if (ether_addr_equal_64bits(entry->mac, prev_mac)) { 644 mlx4_en_uc_steer_release(priv, entry->mac, 645 qpn, entry->reg_id); 646 mlx4_unregister_mac(dev, priv->port, 647 prev_mac_u64); 648 hlist_del_rcu(&entry->hlist); 649 synchronize_rcu(); 650 memcpy(entry->mac, new_mac, ETH_ALEN); 651 entry->reg_id = 0; 652 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; 653 hlist_add_head_rcu(&entry->hlist, 654 &priv->mac_hash[mac_hash]); 655 mlx4_register_mac(dev, priv->port, new_mac_u64); 656 err = mlx4_en_uc_steer_add(priv, new_mac, 657 &qpn, 658 &entry->reg_id); 659 if (err) 660 return err; 661 if (priv->tunnel_reg_id) { 662 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 663 priv->tunnel_reg_id = 0; 664 } 665 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn, 666 &priv->tunnel_reg_id); 667 return err; 668 } 669 } 670 return -EINVAL; 671 } 672 673 return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); 674 } 675 676 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv, 677 unsigned char new_mac[ETH_ALEN + 2]) 678 { 679 int err = 0; 680 681 if (priv->port_up) { 682 /* Remove old MAC and insert the new one */ 683 err = mlx4_en_replace_mac(priv, priv->base_qpn, 684 new_mac, priv->current_mac); 685 if (err) 686 en_err(priv, "Failed changing HW MAC address\n"); 687 } else 688 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); 689 690 if (!err) 691 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac)); 692 693 return err; 694 } 695 696 static int mlx4_en_set_mac(struct net_device *dev, void *addr) 697 { 698 struct mlx4_en_priv *priv = netdev_priv(dev); 699 struct mlx4_en_dev *mdev = priv->mdev; 700 struct sockaddr *saddr = addr; 701 unsigned char new_mac[ETH_ALEN + 2]; 702 int err; 703 704 if (!is_valid_ether_addr(saddr->sa_data)) 705 return -EADDRNOTAVAIL; 706 707 mutex_lock(&mdev->state_lock); 708 memcpy(new_mac, saddr->sa_data, ETH_ALEN); 709 err = mlx4_en_do_set_mac(priv, new_mac); 710 if (!err) 711 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); 712 mutex_unlock(&mdev->state_lock); 713 714 return err; 715 } 716 717 static void mlx4_en_clear_list(struct net_device *dev) 718 { 719 struct mlx4_en_priv *priv = netdev_priv(dev); 720 struct mlx4_en_mc_list *tmp, *mc_to_del; 721 722 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { 723 list_del(&mc_to_del->list); 724 kfree(mc_to_del); 725 } 726 } 727 728 static void mlx4_en_cache_mclist(struct net_device *dev) 729 { 730 struct mlx4_en_priv *priv = netdev_priv(dev); 731 struct netdev_hw_addr *ha; 732 struct mlx4_en_mc_list *tmp; 733 734 mlx4_en_clear_list(dev); 735 netdev_for_each_mc_addr(ha, dev) { 736 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); 737 if (!tmp) { 738 mlx4_en_clear_list(dev); 739 return; 740 } 741 memcpy(tmp->addr, ha->addr, ETH_ALEN); 742 list_add_tail(&tmp->list, &priv->mc_list); 743 } 744 } 745 746 static void update_mclist_flags(struct mlx4_en_priv *priv, 747 struct list_head *dst, 748 struct list_head *src) 749 { 750 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; 751 bool found; 752 753 /* Find all the entries that should be removed from dst, 754 * These are the entries that are not found in src 755 */ 756 list_for_each_entry(dst_tmp, dst, list) { 757 found = false; 758 list_for_each_entry(src_tmp, src, list) { 759 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 760 found = true; 761 break; 762 } 763 } 764 if (!found) 765 dst_tmp->action = MCLIST_REM; 766 } 767 768 /* Add entries that exist in src but not in dst 769 * mark them as need to add 770 */ 771 list_for_each_entry(src_tmp, src, list) { 772 found = false; 773 list_for_each_entry(dst_tmp, dst, list) { 774 if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { 775 dst_tmp->action = MCLIST_NONE; 776 found = true; 777 break; 778 } 779 } 780 if (!found) { 781 new_mc = kmemdup(src_tmp, 782 sizeof(struct mlx4_en_mc_list), 783 GFP_KERNEL); 784 if (!new_mc) 785 return; 786 787 new_mc->action = MCLIST_ADD; 788 list_add_tail(&new_mc->list, dst); 789 } 790 } 791 } 792 793 static void mlx4_en_set_rx_mode(struct net_device *dev) 794 { 795 struct mlx4_en_priv *priv = netdev_priv(dev); 796 797 if (!priv->port_up) 798 return; 799 800 queue_work(priv->mdev->workqueue, &priv->rx_mode_task); 801 } 802 803 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, 804 struct mlx4_en_dev *mdev) 805 { 806 int err = 0; 807 808 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { 809 if (netif_msg_rx_status(priv)) 810 en_warn(priv, "Entering promiscuous mode\n"); 811 priv->flags |= MLX4_EN_FLAG_PROMISC; 812 813 /* Enable promiscouos mode */ 814 switch (mdev->dev->caps.steering_mode) { 815 case MLX4_STEERING_MODE_DEVICE_MANAGED: 816 err = mlx4_flow_steer_promisc_add(mdev->dev, 817 priv->port, 818 priv->base_qpn, 819 MLX4_FS_ALL_DEFAULT); 820 if (err) 821 en_err(priv, "Failed enabling promiscuous mode\n"); 822 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 823 break; 824 825 case MLX4_STEERING_MODE_B0: 826 err = mlx4_unicast_promisc_add(mdev->dev, 827 priv->base_qpn, 828 priv->port); 829 if (err) 830 en_err(priv, "Failed enabling unicast promiscuous mode\n"); 831 832 /* Add the default qp number as multicast 833 * promisc 834 */ 835 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 836 err = mlx4_multicast_promisc_add(mdev->dev, 837 priv->base_qpn, 838 priv->port); 839 if (err) 840 en_err(priv, "Failed enabling multicast promiscuous mode\n"); 841 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 842 } 843 break; 844 845 case MLX4_STEERING_MODE_A0: 846 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 847 priv->port, 848 priv->base_qpn, 849 1); 850 if (err) 851 en_err(priv, "Failed enabling promiscuous mode\n"); 852 break; 853 } 854 855 /* Disable port multicast filter (unconditionally) */ 856 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 857 0, MLX4_MCAST_DISABLE); 858 if (err) 859 en_err(priv, "Failed disabling multicast filter\n"); 860 } 861 } 862 863 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv, 864 struct mlx4_en_dev *mdev) 865 { 866 int err = 0; 867 868 if (netif_msg_rx_status(priv)) 869 en_warn(priv, "Leaving promiscuous mode\n"); 870 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 871 872 /* Disable promiscouos mode */ 873 switch (mdev->dev->caps.steering_mode) { 874 case MLX4_STEERING_MODE_DEVICE_MANAGED: 875 err = mlx4_flow_steer_promisc_remove(mdev->dev, 876 priv->port, 877 MLX4_FS_ALL_DEFAULT); 878 if (err) 879 en_err(priv, "Failed disabling promiscuous mode\n"); 880 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 881 break; 882 883 case MLX4_STEERING_MODE_B0: 884 err = mlx4_unicast_promisc_remove(mdev->dev, 885 priv->base_qpn, 886 priv->port); 887 if (err) 888 en_err(priv, "Failed disabling unicast promiscuous mode\n"); 889 /* Disable Multicast promisc */ 890 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 891 err = mlx4_multicast_promisc_remove(mdev->dev, 892 priv->base_qpn, 893 priv->port); 894 if (err) 895 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 896 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 897 } 898 break; 899 900 case MLX4_STEERING_MODE_A0: 901 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 902 priv->port, 903 priv->base_qpn, 0); 904 if (err) 905 en_err(priv, "Failed disabling promiscuous mode\n"); 906 break; 907 } 908 } 909 910 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, 911 struct net_device *dev, 912 struct mlx4_en_dev *mdev) 913 { 914 struct mlx4_en_mc_list *mclist, *tmp; 915 u64 mcast_addr = 0; 916 u8 mc_list[16] = {0}; 917 int err = 0; 918 919 /* Enable/disable the multicast filter according to IFF_ALLMULTI */ 920 if (dev->flags & IFF_ALLMULTI) { 921 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 922 0, MLX4_MCAST_DISABLE); 923 if (err) 924 en_err(priv, "Failed disabling multicast filter\n"); 925 926 /* Add the default qp number as multicast promisc */ 927 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 928 switch (mdev->dev->caps.steering_mode) { 929 case MLX4_STEERING_MODE_DEVICE_MANAGED: 930 err = mlx4_flow_steer_promisc_add(mdev->dev, 931 priv->port, 932 priv->base_qpn, 933 MLX4_FS_MC_DEFAULT); 934 break; 935 936 case MLX4_STEERING_MODE_B0: 937 err = mlx4_multicast_promisc_add(mdev->dev, 938 priv->base_qpn, 939 priv->port); 940 break; 941 942 case MLX4_STEERING_MODE_A0: 943 break; 944 } 945 if (err) 946 en_err(priv, "Failed entering multicast promisc mode\n"); 947 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 948 } 949 } else { 950 /* Disable Multicast promisc */ 951 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 952 switch (mdev->dev->caps.steering_mode) { 953 case MLX4_STEERING_MODE_DEVICE_MANAGED: 954 err = mlx4_flow_steer_promisc_remove(mdev->dev, 955 priv->port, 956 MLX4_FS_MC_DEFAULT); 957 break; 958 959 case MLX4_STEERING_MODE_B0: 960 err = mlx4_multicast_promisc_remove(mdev->dev, 961 priv->base_qpn, 962 priv->port); 963 break; 964 965 case MLX4_STEERING_MODE_A0: 966 break; 967 } 968 if (err) 969 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 970 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 971 } 972 973 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 974 0, MLX4_MCAST_DISABLE); 975 if (err) 976 en_err(priv, "Failed disabling multicast filter\n"); 977 978 /* Flush mcast filter and init it with broadcast address */ 979 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, 980 1, MLX4_MCAST_CONFIG); 981 982 /* Update multicast list - we cache all addresses so they won't 983 * change while HW is updated holding the command semaphor */ 984 netif_addr_lock_bh(dev); 985 mlx4_en_cache_mclist(dev); 986 netif_addr_unlock_bh(dev); 987 list_for_each_entry(mclist, &priv->mc_list, list) { 988 mcast_addr = mlx4_mac_to_u64(mclist->addr); 989 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 990 mcast_addr, 0, MLX4_MCAST_CONFIG); 991 } 992 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 993 0, MLX4_MCAST_ENABLE); 994 if (err) 995 en_err(priv, "Failed enabling multicast filter\n"); 996 997 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); 998 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 999 if (mclist->action == MCLIST_REM) { 1000 /* detach this address and delete from list */ 1001 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1002 mc_list[5] = priv->port; 1003 err = mlx4_multicast_detach(mdev->dev, 1004 &priv->rss_map.indir_qp, 1005 mc_list, 1006 MLX4_PROT_ETH, 1007 mclist->reg_id); 1008 if (err) 1009 en_err(priv, "Fail to detach multicast address\n"); 1010 1011 if (mclist->tunnel_reg_id) { 1012 err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id); 1013 if (err) 1014 en_err(priv, "Failed to detach multicast address\n"); 1015 } 1016 1017 /* remove from list */ 1018 list_del(&mclist->list); 1019 kfree(mclist); 1020 } else if (mclist->action == MCLIST_ADD) { 1021 /* attach the address */ 1022 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1023 /* needed for B0 steering support */ 1024 mc_list[5] = priv->port; 1025 err = mlx4_multicast_attach(mdev->dev, 1026 &priv->rss_map.indir_qp, 1027 mc_list, 1028 priv->port, 0, 1029 MLX4_PROT_ETH, 1030 &mclist->reg_id); 1031 if (err) 1032 en_err(priv, "Fail to attach multicast address\n"); 1033 1034 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn, 1035 &mclist->tunnel_reg_id); 1036 if (err) 1037 en_err(priv, "Failed to attach multicast address\n"); 1038 } 1039 } 1040 } 1041 } 1042 1043 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, 1044 struct net_device *dev, 1045 struct mlx4_en_dev *mdev) 1046 { 1047 struct netdev_hw_addr *ha; 1048 struct mlx4_mac_entry *entry; 1049 struct hlist_node *tmp; 1050 bool found; 1051 u64 mac; 1052 int err = 0; 1053 struct hlist_head *bucket; 1054 unsigned int i; 1055 int removed = 0; 1056 u32 prev_flags; 1057 1058 /* Note that we do not need to protect our mac_hash traversal with rcu, 1059 * since all modification code is protected by mdev->state_lock 1060 */ 1061 1062 /* find what to remove */ 1063 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1064 bucket = &priv->mac_hash[i]; 1065 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1066 found = false; 1067 netdev_for_each_uc_addr(ha, dev) { 1068 if (ether_addr_equal_64bits(entry->mac, 1069 ha->addr)) { 1070 found = true; 1071 break; 1072 } 1073 } 1074 1075 /* MAC address of the port is not in uc list */ 1076 if (ether_addr_equal_64bits(entry->mac, 1077 priv->current_mac)) 1078 found = true; 1079 1080 if (!found) { 1081 mac = mlx4_mac_to_u64(entry->mac); 1082 mlx4_en_uc_steer_release(priv, entry->mac, 1083 priv->base_qpn, 1084 entry->reg_id); 1085 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1086 1087 hlist_del_rcu(&entry->hlist); 1088 kfree_rcu(entry, rcu); 1089 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", 1090 entry->mac, priv->port); 1091 ++removed; 1092 } 1093 } 1094 } 1095 1096 /* if we didn't remove anything, there is no use in trying to add 1097 * again once we are in a forced promisc mode state 1098 */ 1099 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) 1100 return; 1101 1102 prev_flags = priv->flags; 1103 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 1104 1105 /* find what to add */ 1106 netdev_for_each_uc_addr(ha, dev) { 1107 found = false; 1108 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; 1109 hlist_for_each_entry(entry, bucket, hlist) { 1110 if (ether_addr_equal_64bits(entry->mac, ha->addr)) { 1111 found = true; 1112 break; 1113 } 1114 } 1115 1116 if (!found) { 1117 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1118 if (!entry) { 1119 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", 1120 ha->addr, priv->port); 1121 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1122 break; 1123 } 1124 mac = mlx4_mac_to_u64(ha->addr); 1125 memcpy(entry->mac, ha->addr, ETH_ALEN); 1126 err = mlx4_register_mac(mdev->dev, priv->port, mac); 1127 if (err < 0) { 1128 en_err(priv, "Failed registering MAC %pM on port %d: %d\n", 1129 ha->addr, priv->port, err); 1130 kfree(entry); 1131 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1132 break; 1133 } 1134 err = mlx4_en_uc_steer_add(priv, ha->addr, 1135 &priv->base_qpn, 1136 &entry->reg_id); 1137 if (err) { 1138 en_err(priv, "Failed adding MAC %pM on port %d: %d\n", 1139 ha->addr, priv->port, err); 1140 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1141 kfree(entry); 1142 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1143 break; 1144 } else { 1145 unsigned int mac_hash; 1146 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", 1147 ha->addr, priv->port); 1148 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; 1149 bucket = &priv->mac_hash[mac_hash]; 1150 hlist_add_head_rcu(&entry->hlist, bucket); 1151 } 1152 } 1153 } 1154 1155 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1156 en_warn(priv, "Forcing promiscuous mode on port:%d\n", 1157 priv->port); 1158 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1159 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", 1160 priv->port); 1161 } 1162 } 1163 1164 static void mlx4_en_do_set_rx_mode(struct work_struct *work) 1165 { 1166 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1167 rx_mode_task); 1168 struct mlx4_en_dev *mdev = priv->mdev; 1169 struct net_device *dev = priv->dev; 1170 1171 mutex_lock(&mdev->state_lock); 1172 if (!mdev->device_up) { 1173 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); 1174 goto out; 1175 } 1176 if (!priv->port_up) { 1177 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); 1178 goto out; 1179 } 1180 1181 if (!netif_carrier_ok(dev)) { 1182 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { 1183 if (priv->port_state.link_state) { 1184 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; 1185 netif_carrier_on(dev); 1186 en_dbg(LINK, priv, "Link Up\n"); 1187 } 1188 } 1189 } 1190 1191 if (dev->priv_flags & IFF_UNICAST_FLT) 1192 mlx4_en_do_uc_filter(priv, dev, mdev); 1193 1194 /* Promsicuous mode: disable all filters */ 1195 if ((dev->flags & IFF_PROMISC) || 1196 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { 1197 mlx4_en_set_promisc_mode(priv, mdev); 1198 goto out; 1199 } 1200 1201 /* Not in promiscuous mode */ 1202 if (priv->flags & MLX4_EN_FLAG_PROMISC) 1203 mlx4_en_clear_promisc_mode(priv, mdev); 1204 1205 mlx4_en_do_multicast(priv, dev, mdev); 1206 out: 1207 mutex_unlock(&mdev->state_lock); 1208 } 1209 1210 #ifdef CONFIG_NET_POLL_CONTROLLER 1211 static void mlx4_en_netpoll(struct net_device *dev) 1212 { 1213 struct mlx4_en_priv *priv = netdev_priv(dev); 1214 struct mlx4_en_cq *cq; 1215 int i; 1216 1217 for (i = 0; i < priv->tx_ring_num; i++) { 1218 cq = priv->tx_cq[i]; 1219 napi_schedule(&cq->napi); 1220 } 1221 } 1222 #endif 1223 1224 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv) 1225 { 1226 u64 reg_id; 1227 int err = 0; 1228 int *qpn = &priv->base_qpn; 1229 struct mlx4_mac_entry *entry; 1230 1231 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); 1232 if (err) 1233 return err; 1234 1235 err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn, 1236 &priv->tunnel_reg_id); 1237 if (err) 1238 goto tunnel_err; 1239 1240 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1241 if (!entry) { 1242 err = -ENOMEM; 1243 goto alloc_err; 1244 } 1245 1246 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac)); 1247 memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac)); 1248 entry->reg_id = reg_id; 1249 hlist_add_head_rcu(&entry->hlist, 1250 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); 1251 1252 return 0; 1253 1254 alloc_err: 1255 if (priv->tunnel_reg_id) 1256 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 1257 1258 tunnel_err: 1259 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 1260 return err; 1261 } 1262 1263 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv) 1264 { 1265 u64 mac; 1266 unsigned int i; 1267 int qpn = priv->base_qpn; 1268 struct hlist_head *bucket; 1269 struct hlist_node *tmp; 1270 struct mlx4_mac_entry *entry; 1271 1272 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1273 bucket = &priv->mac_hash[i]; 1274 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1275 mac = mlx4_mac_to_u64(entry->mac); 1276 en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n", 1277 entry->mac); 1278 mlx4_en_uc_steer_release(priv, entry->mac, 1279 qpn, entry->reg_id); 1280 1281 mlx4_unregister_mac(priv->mdev->dev, priv->port, mac); 1282 hlist_del_rcu(&entry->hlist); 1283 kfree_rcu(entry, rcu); 1284 } 1285 } 1286 1287 if (priv->tunnel_reg_id) { 1288 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); 1289 priv->tunnel_reg_id = 0; 1290 } 1291 } 1292 1293 static void mlx4_en_tx_timeout(struct net_device *dev) 1294 { 1295 struct mlx4_en_priv *priv = netdev_priv(dev); 1296 struct mlx4_en_dev *mdev = priv->mdev; 1297 int i; 1298 1299 if (netif_msg_timer(priv)) 1300 en_warn(priv, "Tx timeout called on port:%d\n", priv->port); 1301 1302 for (i = 0; i < priv->tx_ring_num; i++) { 1303 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) 1304 continue; 1305 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", 1306 i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn, 1307 priv->tx_ring[i]->cons, priv->tx_ring[i]->prod); 1308 } 1309 1310 priv->port_stats.tx_timeout++; 1311 en_dbg(DRV, priv, "Scheduling watchdog\n"); 1312 queue_work(mdev->workqueue, &priv->watchdog_task); 1313 } 1314 1315 1316 static struct rtnl_link_stats64 * 1317 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 1318 { 1319 struct mlx4_en_priv *priv = netdev_priv(dev); 1320 1321 spin_lock_bh(&priv->stats_lock); 1322 netdev_stats_to_stats64(stats, &dev->stats); 1323 spin_unlock_bh(&priv->stats_lock); 1324 1325 return stats; 1326 } 1327 1328 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1329 { 1330 struct mlx4_en_cq *cq; 1331 int i; 1332 1333 /* If we haven't received a specific coalescing setting 1334 * (module param), we set the moderation parameters as follows: 1335 * - moder_cnt is set to the number of mtu sized packets to 1336 * satisfy our coalescing target. 1337 * - moder_time is set to a fixed value. 1338 */ 1339 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1340 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1341 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1342 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1343 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1344 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1345 1346 /* Setup cq moderation params */ 1347 for (i = 0; i < priv->rx_ring_num; i++) { 1348 cq = priv->rx_cq[i]; 1349 cq->moder_cnt = priv->rx_frames; 1350 cq->moder_time = priv->rx_usecs; 1351 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1352 priv->last_moder_packets[i] = 0; 1353 priv->last_moder_bytes[i] = 0; 1354 } 1355 1356 for (i = 0; i < priv->tx_ring_num; i++) { 1357 cq = priv->tx_cq[i]; 1358 cq->moder_cnt = priv->tx_frames; 1359 cq->moder_time = priv->tx_usecs; 1360 } 1361 1362 /* Reset auto-moderation params */ 1363 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1364 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1365 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1366 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1367 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1368 priv->adaptive_rx_coal = 1; 1369 priv->last_moder_jiffies = 0; 1370 priv->last_moder_tx_packets = 0; 1371 } 1372 1373 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1374 { 1375 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1376 struct mlx4_en_cq *cq; 1377 unsigned long packets; 1378 unsigned long rate; 1379 unsigned long avg_pkt_size; 1380 unsigned long rx_packets; 1381 unsigned long rx_bytes; 1382 unsigned long rx_pkt_diff; 1383 int moder_time; 1384 int ring, err; 1385 1386 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1387 return; 1388 1389 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1390 spin_lock_bh(&priv->stats_lock); 1391 rx_packets = priv->rx_ring[ring]->packets; 1392 rx_bytes = priv->rx_ring[ring]->bytes; 1393 spin_unlock_bh(&priv->stats_lock); 1394 1395 rx_pkt_diff = ((unsigned long) (rx_packets - 1396 priv->last_moder_packets[ring])); 1397 packets = rx_pkt_diff; 1398 rate = packets * HZ / period; 1399 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1400 priv->last_moder_bytes[ring])) / packets : 0; 1401 1402 /* Apply auto-moderation only when packet rate 1403 * exceeds a rate that it matters */ 1404 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1405 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1406 if (rate < priv->pkt_rate_low) 1407 moder_time = priv->rx_usecs_low; 1408 else if (rate > priv->pkt_rate_high) 1409 moder_time = priv->rx_usecs_high; 1410 else 1411 moder_time = (rate - priv->pkt_rate_low) * 1412 (priv->rx_usecs_high - priv->rx_usecs_low) / 1413 (priv->pkt_rate_high - priv->pkt_rate_low) + 1414 priv->rx_usecs_low; 1415 } else { 1416 moder_time = priv->rx_usecs_low; 1417 } 1418 1419 if (moder_time != priv->last_moder_time[ring]) { 1420 priv->last_moder_time[ring] = moder_time; 1421 cq = priv->rx_cq[ring]; 1422 cq->moder_time = moder_time; 1423 cq->moder_cnt = priv->rx_frames; 1424 err = mlx4_en_set_cq_moder(priv, cq); 1425 if (err) 1426 en_err(priv, "Failed modifying moderation for cq:%d\n", 1427 ring); 1428 } 1429 priv->last_moder_packets[ring] = rx_packets; 1430 priv->last_moder_bytes[ring] = rx_bytes; 1431 } 1432 1433 priv->last_moder_jiffies = jiffies; 1434 } 1435 1436 static void mlx4_en_do_get_stats(struct work_struct *work) 1437 { 1438 struct delayed_work *delay = to_delayed_work(work); 1439 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1440 stats_task); 1441 struct mlx4_en_dev *mdev = priv->mdev; 1442 int err; 1443 1444 mutex_lock(&mdev->state_lock); 1445 if (mdev->device_up) { 1446 if (priv->port_up) { 1447 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1448 if (err) 1449 en_dbg(HW, priv, "Could not update stats\n"); 1450 1451 mlx4_en_auto_moderation(priv); 1452 } 1453 1454 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1455 } 1456 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1457 mlx4_en_do_set_mac(priv, priv->current_mac); 1458 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1459 } 1460 mutex_unlock(&mdev->state_lock); 1461 } 1462 1463 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1464 * periodically 1465 */ 1466 static void mlx4_en_service_task(struct work_struct *work) 1467 { 1468 struct delayed_work *delay = to_delayed_work(work); 1469 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1470 service_task); 1471 struct mlx4_en_dev *mdev = priv->mdev; 1472 1473 mutex_lock(&mdev->state_lock); 1474 if (mdev->device_up) { 1475 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1476 mlx4_en_ptp_overflow_check(mdev); 1477 1478 mlx4_en_recover_from_oom(priv); 1479 queue_delayed_work(mdev->workqueue, &priv->service_task, 1480 SERVICE_TASK_DELAY); 1481 } 1482 mutex_unlock(&mdev->state_lock); 1483 } 1484 1485 static void mlx4_en_linkstate(struct work_struct *work) 1486 { 1487 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1488 linkstate_task); 1489 struct mlx4_en_dev *mdev = priv->mdev; 1490 int linkstate = priv->link_state; 1491 1492 mutex_lock(&mdev->state_lock); 1493 /* If observable port state changed set carrier state and 1494 * report to system log */ 1495 if (priv->last_link_state != linkstate) { 1496 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1497 en_info(priv, "Link Down\n"); 1498 netif_carrier_off(priv->dev); 1499 } else { 1500 en_info(priv, "Link Up\n"); 1501 netif_carrier_on(priv->dev); 1502 } 1503 } 1504 priv->last_link_state = linkstate; 1505 mutex_unlock(&mdev->state_lock); 1506 } 1507 1508 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1509 { 1510 struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx]; 1511 int numa_node = priv->mdev->dev->numa_node; 1512 1513 if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL)) 1514 return -ENOMEM; 1515 1516 cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node), 1517 ring->affinity_mask); 1518 return 0; 1519 } 1520 1521 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) 1522 { 1523 free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask); 1524 } 1525 1526 static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv, 1527 int tx_ring_idx) 1528 { 1529 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[tx_ring_idx]; 1530 int rr_index; 1531 1532 rr_index = (priv->xdp_ring_num - priv->tx_ring_num) + tx_ring_idx; 1533 if (rr_index >= 0) { 1534 tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc; 1535 tx_ring->recycle_ring = priv->rx_ring[rr_index]; 1536 en_dbg(DRV, priv, 1537 "Set tx_ring[%d]->recycle_ring = rx_ring[%d]\n", 1538 tx_ring_idx, rr_index); 1539 } else { 1540 tx_ring->recycle_ring = NULL; 1541 } 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 tx_index = 0; 1552 int err = 0; 1553 int i; 1554 int j; 1555 u8 mc_list[16] = {0}; 1556 1557 if (priv->port_up) { 1558 en_dbg(DRV, priv, "start port called while port already up\n"); 1559 return 0; 1560 } 1561 1562 INIT_LIST_HEAD(&priv->mc_list); 1563 INIT_LIST_HEAD(&priv->curr_list); 1564 INIT_LIST_HEAD(&priv->ethtool_list); 1565 memset(&priv->ethtool_rules[0], 0, 1566 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1567 1568 /* Calculate Rx buf size */ 1569 dev->mtu = min(dev->mtu, priv->max_mtu); 1570 mlx4_en_calc_rx_buf(dev); 1571 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1572 1573 /* Configure rx cq's and rings */ 1574 err = mlx4_en_activate_rx_rings(priv); 1575 if (err) { 1576 en_err(priv, "Failed to activate RX rings\n"); 1577 return err; 1578 } 1579 for (i = 0; i < priv->rx_ring_num; i++) { 1580 cq = priv->rx_cq[i]; 1581 1582 err = mlx4_en_init_affinity_hint(priv, i); 1583 if (err) { 1584 en_err(priv, "Failed preparing IRQ affinity hint\n"); 1585 goto cq_err; 1586 } 1587 1588 err = mlx4_en_activate_cq(priv, cq, i); 1589 if (err) { 1590 en_err(priv, "Failed activating Rx CQ\n"); 1591 mlx4_en_free_affinity_hint(priv, i); 1592 goto cq_err; 1593 } 1594 1595 for (j = 0; j < cq->size; j++) { 1596 struct mlx4_cqe *cqe = NULL; 1597 1598 cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) + 1599 priv->cqe_factor; 1600 cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1601 } 1602 1603 err = mlx4_en_set_cq_moder(priv, cq); 1604 if (err) { 1605 en_err(priv, "Failed setting cq moderation parameters\n"); 1606 mlx4_en_deactivate_cq(priv, cq); 1607 mlx4_en_free_affinity_hint(priv, i); 1608 goto cq_err; 1609 } 1610 mlx4_en_arm_cq(priv, cq); 1611 priv->rx_ring[i]->cqn = cq->mcq.cqn; 1612 ++rx_index; 1613 } 1614 1615 /* Set qp number */ 1616 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1617 err = mlx4_en_get_qp(priv); 1618 if (err) { 1619 en_err(priv, "Failed getting eth qp\n"); 1620 goto cq_err; 1621 } 1622 mdev->mac_removed[priv->port] = 0; 1623 1624 priv->counter_index = 1625 mlx4_get_default_counter_index(mdev->dev, priv->port); 1626 1627 err = mlx4_en_config_rss_steer(priv); 1628 if (err) { 1629 en_err(priv, "Failed configuring rss steering\n"); 1630 goto mac_err; 1631 } 1632 1633 err = mlx4_en_create_drop_qp(priv); 1634 if (err) 1635 goto rss_err; 1636 1637 /* Configure tx cq's and rings */ 1638 for (i = 0; i < priv->tx_ring_num; i++) { 1639 /* Configure cq */ 1640 cq = priv->tx_cq[i]; 1641 err = mlx4_en_activate_cq(priv, cq, i); 1642 if (err) { 1643 en_err(priv, "Failed allocating Tx CQ\n"); 1644 goto tx_err; 1645 } 1646 err = mlx4_en_set_cq_moder(priv, cq); 1647 if (err) { 1648 en_err(priv, "Failed setting cq moderation parameters\n"); 1649 mlx4_en_deactivate_cq(priv, cq); 1650 goto tx_err; 1651 } 1652 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i); 1653 cq->buf->wqe_index = cpu_to_be16(0xffff); 1654 1655 /* Configure ring */ 1656 tx_ring = priv->tx_ring[i]; 1657 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, 1658 i / priv->num_tx_rings_p_up); 1659 if (err) { 1660 en_err(priv, "Failed allocating Tx ring\n"); 1661 mlx4_en_deactivate_cq(priv, cq); 1662 goto tx_err; 1663 } 1664 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1665 1666 mlx4_en_init_recycle_ring(priv, i); 1667 1668 /* Arm CQ for TX completions */ 1669 mlx4_en_arm_cq(priv, cq); 1670 1671 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1672 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1673 *((u32 *) (tx_ring->buf + j)) = 0xffffffff; 1674 ++tx_index; 1675 } 1676 1677 /* Configure port */ 1678 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1679 priv->rx_skb_size + ETH_FCS_LEN, 1680 priv->prof->tx_pause, 1681 priv->prof->tx_ppp, 1682 priv->prof->rx_pause, 1683 priv->prof->rx_ppp); 1684 if (err) { 1685 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1686 priv->port, err); 1687 goto tx_err; 1688 } 1689 /* Set default qp number */ 1690 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1691 if (err) { 1692 en_err(priv, "Failed setting default qp numbers\n"); 1693 goto tx_err; 1694 } 1695 1696 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 1697 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 1698 if (err) { 1699 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 1700 err); 1701 goto tx_err; 1702 } 1703 } 1704 1705 /* Init port */ 1706 en_dbg(HW, priv, "Initializing port\n"); 1707 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1708 if (err) { 1709 en_err(priv, "Failed Initializing port\n"); 1710 goto tx_err; 1711 } 1712 1713 /* Set Unicast and VXLAN steering rules */ 1714 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 && 1715 mlx4_en_set_rss_steer_rules(priv)) 1716 mlx4_warn(mdev, "Failed setting steering rules\n"); 1717 1718 /* Attach rx QP to bradcast address */ 1719 eth_broadcast_addr(&mc_list[10]); 1720 mc_list[5] = priv->port; /* needed for B0 steering support */ 1721 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1722 priv->port, 0, MLX4_PROT_ETH, 1723 &priv->broadcast_id)) 1724 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1725 1726 /* Must redo promiscuous mode setup. */ 1727 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1728 1729 /* Schedule multicast task to populate multicast list */ 1730 queue_work(mdev->workqueue, &priv->rx_mode_task); 1731 1732 if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 1733 udp_tunnel_get_rx_info(dev); 1734 1735 priv->port_up = true; 1736 netif_tx_start_all_queues(dev); 1737 netif_device_attach(dev); 1738 1739 return 0; 1740 1741 tx_err: 1742 while (tx_index--) { 1743 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]); 1744 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]); 1745 } 1746 mlx4_en_destroy_drop_qp(priv); 1747 rss_err: 1748 mlx4_en_release_rss_steer(priv); 1749 mac_err: 1750 mlx4_en_put_qp(priv); 1751 cq_err: 1752 while (rx_index--) { 1753 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); 1754 mlx4_en_free_affinity_hint(priv, rx_index); 1755 } 1756 for (i = 0; i < priv->rx_ring_num; i++) 1757 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1758 1759 return err; /* need to close devices */ 1760 } 1761 1762 1763 void mlx4_en_stop_port(struct net_device *dev, int detach) 1764 { 1765 struct mlx4_en_priv *priv = netdev_priv(dev); 1766 struct mlx4_en_dev *mdev = priv->mdev; 1767 struct mlx4_en_mc_list *mclist, *tmp; 1768 struct ethtool_flow_id *flow, *tmp_flow; 1769 int i; 1770 u8 mc_list[16] = {0}; 1771 1772 if (!priv->port_up) { 1773 en_dbg(DRV, priv, "stop port called while port already down\n"); 1774 return; 1775 } 1776 1777 /* close port*/ 1778 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1779 1780 /* Synchronize with tx routine */ 1781 netif_tx_lock_bh(dev); 1782 if (detach) 1783 netif_device_detach(dev); 1784 netif_tx_stop_all_queues(dev); 1785 netif_tx_unlock_bh(dev); 1786 1787 netif_tx_disable(dev); 1788 1789 /* Set port as not active */ 1790 priv->port_up = false; 1791 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 1792 1793 /* Promsicuous mode */ 1794 if (mdev->dev->caps.steering_mode == 1795 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1796 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | 1797 MLX4_EN_FLAG_MC_PROMISC); 1798 mlx4_flow_steer_promisc_remove(mdev->dev, 1799 priv->port, 1800 MLX4_FS_ALL_DEFAULT); 1801 mlx4_flow_steer_promisc_remove(mdev->dev, 1802 priv->port, 1803 MLX4_FS_MC_DEFAULT); 1804 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { 1805 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 1806 1807 /* Disable promiscouos mode */ 1808 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, 1809 priv->port); 1810 1811 /* Disable Multicast promisc */ 1812 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1813 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, 1814 priv->port); 1815 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1816 } 1817 } 1818 1819 /* Detach All multicasts */ 1820 eth_broadcast_addr(&mc_list[10]); 1821 mc_list[5] = priv->port; /* needed for B0 steering support */ 1822 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1823 MLX4_PROT_ETH, priv->broadcast_id); 1824 list_for_each_entry(mclist, &priv->curr_list, list) { 1825 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1826 mc_list[5] = priv->port; 1827 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, 1828 mc_list, MLX4_PROT_ETH, mclist->reg_id); 1829 if (mclist->tunnel_reg_id) 1830 mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id); 1831 } 1832 mlx4_en_clear_list(dev); 1833 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1834 list_del(&mclist->list); 1835 kfree(mclist); 1836 } 1837 1838 /* Flush multicast filter */ 1839 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); 1840 1841 /* Remove flow steering rules for the port*/ 1842 if (mdev->dev->caps.steering_mode == 1843 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1844 ASSERT_RTNL(); 1845 list_for_each_entry_safe(flow, tmp_flow, 1846 &priv->ethtool_list, list) { 1847 mlx4_flow_detach(mdev->dev, flow->id); 1848 list_del(&flow->list); 1849 } 1850 } 1851 1852 mlx4_en_destroy_drop_qp(priv); 1853 1854 /* Free TX Rings */ 1855 for (i = 0; i < priv->tx_ring_num; i++) { 1856 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]); 1857 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]); 1858 } 1859 msleep(10); 1860 1861 for (i = 0; i < priv->tx_ring_num; i++) 1862 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]); 1863 1864 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 1865 mlx4_en_delete_rss_steer_rules(priv); 1866 1867 /* Free RSS qps */ 1868 mlx4_en_release_rss_steer(priv); 1869 1870 /* Unregister Mac address for the port */ 1871 mlx4_en_put_qp(priv); 1872 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN)) 1873 mdev->mac_removed[priv->port] = 1; 1874 1875 /* Free RX Rings */ 1876 for (i = 0; i < priv->rx_ring_num; i++) { 1877 struct mlx4_en_cq *cq = priv->rx_cq[i]; 1878 1879 napi_synchronize(&cq->napi); 1880 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); 1881 mlx4_en_deactivate_cq(priv, cq); 1882 1883 mlx4_en_free_affinity_hint(priv, i); 1884 } 1885 } 1886 1887 static void mlx4_en_restart(struct work_struct *work) 1888 { 1889 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1890 watchdog_task); 1891 struct mlx4_en_dev *mdev = priv->mdev; 1892 struct net_device *dev = priv->dev; 1893 1894 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1895 1896 rtnl_lock(); 1897 mutex_lock(&mdev->state_lock); 1898 if (priv->port_up) { 1899 mlx4_en_stop_port(dev, 1); 1900 if (mlx4_en_start_port(dev)) 1901 en_err(priv, "Failed restarting port %d\n", priv->port); 1902 } 1903 mutex_unlock(&mdev->state_lock); 1904 rtnl_unlock(); 1905 } 1906 1907 static void mlx4_en_clear_stats(struct net_device *dev) 1908 { 1909 struct mlx4_en_priv *priv = netdev_priv(dev); 1910 struct mlx4_en_dev *mdev = priv->mdev; 1911 int i; 1912 1913 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1914 en_dbg(HW, priv, "Failed dumping statistics\n"); 1915 1916 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1917 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1918 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1919 memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats)); 1920 memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats)); 1921 memset(&priv->rx_priority_flowstats, 0, 1922 sizeof(priv->rx_priority_flowstats)); 1923 memset(&priv->tx_priority_flowstats, 0, 1924 sizeof(priv->tx_priority_flowstats)); 1925 memset(&priv->pf_stats, 0, sizeof(priv->pf_stats)); 1926 1927 for (i = 0; i < priv->tx_ring_num; i++) { 1928 priv->tx_ring[i]->bytes = 0; 1929 priv->tx_ring[i]->packets = 0; 1930 priv->tx_ring[i]->tx_csum = 0; 1931 priv->tx_ring[i]->tx_dropped = 0; 1932 priv->tx_ring[i]->queue_stopped = 0; 1933 priv->tx_ring[i]->wake_queue = 0; 1934 priv->tx_ring[i]->tso_packets = 0; 1935 priv->tx_ring[i]->xmit_more = 0; 1936 } 1937 for (i = 0; i < priv->rx_ring_num; i++) { 1938 priv->rx_ring[i]->bytes = 0; 1939 priv->rx_ring[i]->packets = 0; 1940 priv->rx_ring[i]->csum_ok = 0; 1941 priv->rx_ring[i]->csum_none = 0; 1942 priv->rx_ring[i]->csum_complete = 0; 1943 } 1944 } 1945 1946 static int mlx4_en_open(struct net_device *dev) 1947 { 1948 struct mlx4_en_priv *priv = netdev_priv(dev); 1949 struct mlx4_en_dev *mdev = priv->mdev; 1950 int err = 0; 1951 1952 mutex_lock(&mdev->state_lock); 1953 1954 if (!mdev->device_up) { 1955 en_err(priv, "Cannot open - device down/disabled\n"); 1956 err = -EBUSY; 1957 goto out; 1958 } 1959 1960 /* Reset HW statistics and SW counters */ 1961 mlx4_en_clear_stats(dev); 1962 1963 err = mlx4_en_start_port(dev); 1964 if (err) 1965 en_err(priv, "Failed starting port:%d\n", priv->port); 1966 1967 out: 1968 mutex_unlock(&mdev->state_lock); 1969 return err; 1970 } 1971 1972 1973 static int mlx4_en_close(struct net_device *dev) 1974 { 1975 struct mlx4_en_priv *priv = netdev_priv(dev); 1976 struct mlx4_en_dev *mdev = priv->mdev; 1977 1978 en_dbg(IFDOWN, priv, "Close port called\n"); 1979 1980 mutex_lock(&mdev->state_lock); 1981 1982 mlx4_en_stop_port(dev, 0); 1983 netif_carrier_off(dev); 1984 1985 mutex_unlock(&mdev->state_lock); 1986 return 0; 1987 } 1988 1989 static void mlx4_en_free_resources(struct mlx4_en_priv *priv) 1990 { 1991 int i; 1992 1993 #ifdef CONFIG_RFS_ACCEL 1994 priv->dev->rx_cpu_rmap = NULL; 1995 #endif 1996 1997 for (i = 0; i < priv->tx_ring_num; i++) { 1998 if (priv->tx_ring && priv->tx_ring[i]) 1999 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2000 if (priv->tx_cq && priv->tx_cq[i]) 2001 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2002 } 2003 2004 for (i = 0; i < priv->rx_ring_num; i++) { 2005 if (priv->rx_ring[i]) 2006 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2007 priv->prof->rx_ring_size, priv->stride); 2008 if (priv->rx_cq[i]) 2009 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2010 } 2011 2012 } 2013 2014 static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 2015 { 2016 struct mlx4_en_port_profile *prof = priv->prof; 2017 int i; 2018 int node; 2019 2020 /* Create tx Rings */ 2021 for (i = 0; i < priv->tx_ring_num; i++) { 2022 node = cpu_to_node(i % num_online_cpus()); 2023 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 2024 prof->tx_ring_size, i, TX, node)) 2025 goto err; 2026 2027 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], 2028 prof->tx_ring_size, TXBB_SIZE, 2029 node, i)) 2030 goto err; 2031 } 2032 2033 /* Create rx Rings */ 2034 for (i = 0; i < priv->rx_ring_num; i++) { 2035 node = cpu_to_node(i % num_online_cpus()); 2036 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 2037 prof->rx_ring_size, i, RX, node)) 2038 goto err; 2039 2040 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 2041 prof->rx_ring_size, priv->stride, 2042 node)) 2043 goto err; 2044 } 2045 2046 #ifdef CONFIG_RFS_ACCEL 2047 priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port); 2048 #endif 2049 2050 return 0; 2051 2052 err: 2053 en_err(priv, "Failed to allocate NIC resources\n"); 2054 for (i = 0; i < priv->rx_ring_num; i++) { 2055 if (priv->rx_ring[i]) 2056 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 2057 prof->rx_ring_size, 2058 priv->stride); 2059 if (priv->rx_cq[i]) 2060 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 2061 } 2062 for (i = 0; i < priv->tx_ring_num; i++) { 2063 if (priv->tx_ring[i]) 2064 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 2065 if (priv->tx_cq[i]) 2066 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 2067 } 2068 return -ENOMEM; 2069 } 2070 2071 static void mlx4_en_shutdown(struct net_device *dev) 2072 { 2073 rtnl_lock(); 2074 netif_device_detach(dev); 2075 mlx4_en_close(dev); 2076 rtnl_unlock(); 2077 } 2078 2079 static int mlx4_en_copy_priv(struct mlx4_en_priv *dst, 2080 struct mlx4_en_priv *src, 2081 struct mlx4_en_port_profile *prof) 2082 { 2083 memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config, 2084 sizeof(dst->hwtstamp_config)); 2085 dst->num_tx_rings_p_up = src->mdev->profile.num_tx_rings_p_up; 2086 dst->tx_ring_num = prof->tx_ring_num; 2087 dst->rx_ring_num = prof->rx_ring_num; 2088 dst->flags = prof->flags; 2089 dst->mdev = src->mdev; 2090 dst->port = src->port; 2091 dst->dev = src->dev; 2092 dst->prof = prof; 2093 dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2094 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2095 2096 dst->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 2097 GFP_KERNEL); 2098 if (!dst->tx_ring) 2099 return -ENOMEM; 2100 2101 dst->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 2102 GFP_KERNEL); 2103 if (!dst->tx_cq) { 2104 kfree(dst->tx_ring); 2105 return -ENOMEM; 2106 } 2107 return 0; 2108 } 2109 2110 static void mlx4_en_update_priv(struct mlx4_en_priv *dst, 2111 struct mlx4_en_priv *src) 2112 { 2113 memcpy(dst->rx_ring, src->rx_ring, 2114 sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num); 2115 memcpy(dst->rx_cq, src->rx_cq, 2116 sizeof(struct mlx4_en_cq *) * src->rx_ring_num); 2117 memcpy(&dst->hwtstamp_config, &src->hwtstamp_config, 2118 sizeof(dst->hwtstamp_config)); 2119 dst->tx_ring_num = src->tx_ring_num; 2120 dst->rx_ring_num = src->rx_ring_num; 2121 dst->tx_ring = src->tx_ring; 2122 dst->tx_cq = src->tx_cq; 2123 memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile)); 2124 } 2125 2126 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv, 2127 struct mlx4_en_priv *tmp, 2128 struct mlx4_en_port_profile *prof) 2129 { 2130 mlx4_en_copy_priv(tmp, priv, prof); 2131 2132 if (mlx4_en_alloc_resources(tmp)) { 2133 en_warn(priv, 2134 "%s: Resource allocation failed, using previous configuration\n", 2135 __func__); 2136 kfree(tmp->tx_ring); 2137 kfree(tmp->tx_cq); 2138 return -ENOMEM; 2139 } 2140 return 0; 2141 } 2142 2143 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv, 2144 struct mlx4_en_priv *tmp) 2145 { 2146 mlx4_en_free_resources(priv); 2147 mlx4_en_update_priv(priv, tmp); 2148 } 2149 2150 void mlx4_en_destroy_netdev(struct net_device *dev) 2151 { 2152 struct mlx4_en_priv *priv = netdev_priv(dev); 2153 struct mlx4_en_dev *mdev = priv->mdev; 2154 bool shutdown = mdev->dev->persist->interface_state & 2155 MLX4_INTERFACE_STATE_SHUTDOWN; 2156 2157 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 2158 2159 /* Unregister device - this will close the port if it was up */ 2160 if (priv->registered) { 2161 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev, 2162 priv->port)); 2163 if (shutdown) 2164 mlx4_en_shutdown(dev); 2165 else 2166 unregister_netdev(dev); 2167 } 2168 2169 if (priv->allocated) 2170 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 2171 2172 cancel_delayed_work(&priv->stats_task); 2173 cancel_delayed_work(&priv->service_task); 2174 /* flush any pending task for this netdev */ 2175 flush_workqueue(mdev->workqueue); 2176 2177 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2178 mlx4_en_remove_timestamp(mdev); 2179 2180 /* Detach the netdev so tasks would not attempt to access it */ 2181 mutex_lock(&mdev->state_lock); 2182 mdev->pndev[priv->port] = NULL; 2183 mdev->upper[priv->port] = NULL; 2184 mutex_unlock(&mdev->state_lock); 2185 2186 #ifdef CONFIG_RFS_ACCEL 2187 mlx4_en_cleanup_filters(priv); 2188 #endif 2189 2190 mlx4_en_free_resources(priv); 2191 2192 kfree(priv->tx_ring); 2193 kfree(priv->tx_cq); 2194 2195 if (!shutdown) 2196 free_netdev(dev); 2197 } 2198 2199 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 2200 { 2201 struct mlx4_en_priv *priv = netdev_priv(dev); 2202 struct mlx4_en_dev *mdev = priv->mdev; 2203 int err = 0; 2204 2205 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 2206 dev->mtu, new_mtu); 2207 2208 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 2209 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 2210 return -EPERM; 2211 } 2212 if (priv->xdp_ring_num && MLX4_EN_EFF_MTU(new_mtu) > FRAG_SZ0) { 2213 en_err(priv, "MTU size:%d requires frags but XDP running\n", 2214 new_mtu); 2215 return -EOPNOTSUPP; 2216 } 2217 dev->mtu = new_mtu; 2218 2219 if (netif_running(dev)) { 2220 mutex_lock(&mdev->state_lock); 2221 if (!mdev->device_up) { 2222 /* NIC is probably restarting - let watchdog task reset 2223 * the port */ 2224 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 2225 } else { 2226 mlx4_en_stop_port(dev, 1); 2227 err = mlx4_en_start_port(dev); 2228 if (err) { 2229 en_err(priv, "Failed restarting port:%d\n", 2230 priv->port); 2231 queue_work(mdev->workqueue, &priv->watchdog_task); 2232 } 2233 } 2234 mutex_unlock(&mdev->state_lock); 2235 } 2236 return 0; 2237 } 2238 2239 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 2240 { 2241 struct mlx4_en_priv *priv = netdev_priv(dev); 2242 struct mlx4_en_dev *mdev = priv->mdev; 2243 struct hwtstamp_config config; 2244 2245 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2246 return -EFAULT; 2247 2248 /* reserved for future extensions */ 2249 if (config.flags) 2250 return -EINVAL; 2251 2252 /* device doesn't support time stamping */ 2253 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2254 return -EINVAL; 2255 2256 /* TX HW timestamp */ 2257 switch (config.tx_type) { 2258 case HWTSTAMP_TX_OFF: 2259 case HWTSTAMP_TX_ON: 2260 break; 2261 default: 2262 return -ERANGE; 2263 } 2264 2265 /* RX HW timestamp */ 2266 switch (config.rx_filter) { 2267 case HWTSTAMP_FILTER_NONE: 2268 break; 2269 case HWTSTAMP_FILTER_ALL: 2270 case HWTSTAMP_FILTER_SOME: 2271 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2272 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2273 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2274 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2275 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2276 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2277 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2278 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2279 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2280 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2281 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2282 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2283 config.rx_filter = HWTSTAMP_FILTER_ALL; 2284 break; 2285 default: 2286 return -ERANGE; 2287 } 2288 2289 if (mlx4_en_reset_config(dev, config, dev->features)) { 2290 config.tx_type = HWTSTAMP_TX_OFF; 2291 config.rx_filter = HWTSTAMP_FILTER_NONE; 2292 } 2293 2294 return copy_to_user(ifr->ifr_data, &config, 2295 sizeof(config)) ? -EFAULT : 0; 2296 } 2297 2298 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) 2299 { 2300 struct mlx4_en_priv *priv = netdev_priv(dev); 2301 2302 return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, 2303 sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; 2304 } 2305 2306 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2307 { 2308 switch (cmd) { 2309 case SIOCSHWTSTAMP: 2310 return mlx4_en_hwtstamp_set(dev, ifr); 2311 case SIOCGHWTSTAMP: 2312 return mlx4_en_hwtstamp_get(dev, ifr); 2313 default: 2314 return -EOPNOTSUPP; 2315 } 2316 } 2317 2318 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev, 2319 netdev_features_t features) 2320 { 2321 struct mlx4_en_priv *en_priv = netdev_priv(netdev); 2322 struct mlx4_en_dev *mdev = en_priv->mdev; 2323 2324 /* Since there is no support for separate RX C-TAG/S-TAG vlan accel 2325 * enable/disable make sure S-TAG flag is always in same state as 2326 * C-TAG. 2327 */ 2328 if (features & NETIF_F_HW_VLAN_CTAG_RX && 2329 !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 2330 features |= NETIF_F_HW_VLAN_STAG_RX; 2331 else 2332 features &= ~NETIF_F_HW_VLAN_STAG_RX; 2333 2334 return features; 2335 } 2336 2337 static int mlx4_en_set_features(struct net_device *netdev, 2338 netdev_features_t features) 2339 { 2340 struct mlx4_en_priv *priv = netdev_priv(netdev); 2341 bool reset = false; 2342 int ret = 0; 2343 2344 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) { 2345 en_info(priv, "Turn %s RX-FCS\n", 2346 (features & NETIF_F_RXFCS) ? "ON" : "OFF"); 2347 reset = true; 2348 } 2349 2350 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) { 2351 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0; 2352 2353 en_info(priv, "Turn %s RX-ALL\n", 2354 ignore_fcs_value ? "ON" : "OFF"); 2355 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev, 2356 priv->port, ignore_fcs_value); 2357 if (ret) 2358 return ret; 2359 } 2360 2361 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 2362 en_info(priv, "Turn %s RX vlan strip offload\n", 2363 (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF"); 2364 reset = true; 2365 } 2366 2367 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX)) 2368 en_info(priv, "Turn %s TX vlan strip offload\n", 2369 (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF"); 2370 2371 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX)) 2372 en_info(priv, "Turn %s TX S-VLAN strip offload\n", 2373 (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF"); 2374 2375 if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) { 2376 en_info(priv, "Turn %s loopback\n", 2377 (features & NETIF_F_LOOPBACK) ? "ON" : "OFF"); 2378 mlx4_en_update_loopback_state(netdev, features); 2379 } 2380 2381 if (reset) { 2382 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config, 2383 features); 2384 if (ret) 2385 return ret; 2386 } 2387 2388 return 0; 2389 } 2390 2391 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2392 { 2393 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2394 struct mlx4_en_dev *mdev = en_priv->mdev; 2395 u64 mac_u64 = mlx4_mac_to_u64(mac); 2396 2397 if (is_multicast_ether_addr(mac)) 2398 return -EINVAL; 2399 2400 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2401 } 2402 2403 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos, 2404 __be16 vlan_proto) 2405 { 2406 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2407 struct mlx4_en_dev *mdev = en_priv->mdev; 2408 2409 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos, 2410 vlan_proto); 2411 } 2412 2413 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, 2414 int max_tx_rate) 2415 { 2416 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2417 struct mlx4_en_dev *mdev = en_priv->mdev; 2418 2419 return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate, 2420 max_tx_rate); 2421 } 2422 2423 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2424 { 2425 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2426 struct mlx4_en_dev *mdev = en_priv->mdev; 2427 2428 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2429 } 2430 2431 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2432 { 2433 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2434 struct mlx4_en_dev *mdev = en_priv->mdev; 2435 2436 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2437 } 2438 2439 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2440 { 2441 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2442 struct mlx4_en_dev *mdev = en_priv->mdev; 2443 2444 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2445 } 2446 2447 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf, 2448 struct ifla_vf_stats *vf_stats) 2449 { 2450 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2451 struct mlx4_en_dev *mdev = en_priv->mdev; 2452 2453 return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats); 2454 } 2455 2456 #define PORT_ID_BYTE_LEN 8 2457 static int mlx4_en_get_phys_port_id(struct net_device *dev, 2458 struct netdev_phys_item_id *ppid) 2459 { 2460 struct mlx4_en_priv *priv = netdev_priv(dev); 2461 struct mlx4_dev *mdev = priv->mdev->dev; 2462 int i; 2463 u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; 2464 2465 if (!phys_port_id) 2466 return -EOPNOTSUPP; 2467 2468 ppid->id_len = sizeof(phys_port_id); 2469 for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { 2470 ppid->id[i] = phys_port_id & 0xff; 2471 phys_port_id >>= 8; 2472 } 2473 return 0; 2474 } 2475 2476 static void mlx4_en_add_vxlan_offloads(struct work_struct *work) 2477 { 2478 int ret; 2479 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2480 vxlan_add_task); 2481 2482 ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port); 2483 if (ret) 2484 goto out; 2485 2486 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2487 VXLAN_STEER_BY_OUTER_MAC, 1); 2488 out: 2489 if (ret) { 2490 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2491 return; 2492 } 2493 2494 /* set offloads */ 2495 priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 2496 NETIF_F_RXCSUM | 2497 NETIF_F_TSO | NETIF_F_TSO6 | 2498 NETIF_F_GSO_UDP_TUNNEL | 2499 NETIF_F_GSO_UDP_TUNNEL_CSUM | 2500 NETIF_F_GSO_PARTIAL; 2501 } 2502 2503 static void mlx4_en_del_vxlan_offloads(struct work_struct *work) 2504 { 2505 int ret; 2506 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 2507 vxlan_del_task); 2508 /* unset offloads */ 2509 priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 2510 NETIF_F_RXCSUM | 2511 NETIF_F_TSO | NETIF_F_TSO6 | 2512 NETIF_F_GSO_UDP_TUNNEL | 2513 NETIF_F_GSO_UDP_TUNNEL_CSUM | 2514 NETIF_F_GSO_PARTIAL); 2515 2516 ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, 2517 VXLAN_STEER_BY_OUTER_MAC, 0); 2518 if (ret) 2519 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); 2520 2521 priv->vxlan_port = 0; 2522 } 2523 2524 static void mlx4_en_add_vxlan_port(struct net_device *dev, 2525 struct udp_tunnel_info *ti) 2526 { 2527 struct mlx4_en_priv *priv = netdev_priv(dev); 2528 __be16 port = ti->port; 2529 __be16 current_port; 2530 2531 if (ti->type != UDP_TUNNEL_TYPE_VXLAN) 2532 return; 2533 2534 if (ti->sa_family != AF_INET) 2535 return; 2536 2537 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2538 return; 2539 2540 current_port = priv->vxlan_port; 2541 if (current_port && current_port != port) { 2542 en_warn(priv, "vxlan port %d configured, can't add port %d\n", 2543 ntohs(current_port), ntohs(port)); 2544 return; 2545 } 2546 2547 priv->vxlan_port = port; 2548 queue_work(priv->mdev->workqueue, &priv->vxlan_add_task); 2549 } 2550 2551 static void mlx4_en_del_vxlan_port(struct net_device *dev, 2552 struct udp_tunnel_info *ti) 2553 { 2554 struct mlx4_en_priv *priv = netdev_priv(dev); 2555 __be16 port = ti->port; 2556 __be16 current_port; 2557 2558 if (ti->type != UDP_TUNNEL_TYPE_VXLAN) 2559 return; 2560 2561 if (ti->sa_family != AF_INET) 2562 return; 2563 2564 if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) 2565 return; 2566 2567 current_port = priv->vxlan_port; 2568 if (current_port != port) { 2569 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port)); 2570 return; 2571 } 2572 2573 queue_work(priv->mdev->workqueue, &priv->vxlan_del_task); 2574 } 2575 2576 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb, 2577 struct net_device *dev, 2578 netdev_features_t features) 2579 { 2580 features = vlan_features_check(skb, features); 2581 features = vxlan_features_check(skb, features); 2582 2583 /* The ConnectX-3 doesn't support outer IPv6 checksums but it does 2584 * support inner IPv6 checksums and segmentation so we need to 2585 * strip that feature if this is an IPv6 encapsulated frame. 2586 */ 2587 if (skb->encapsulation && 2588 (skb->ip_summed == CHECKSUM_PARTIAL)) { 2589 struct mlx4_en_priv *priv = netdev_priv(dev); 2590 2591 if (!priv->vxlan_port || 2592 (ip_hdr(skb)->version != 4) || 2593 (udp_hdr(skb)->dest != priv->vxlan_port)) 2594 features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); 2595 } 2596 2597 return features; 2598 } 2599 2600 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate) 2601 { 2602 struct mlx4_en_priv *priv = netdev_priv(dev); 2603 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index]; 2604 struct mlx4_update_qp_params params; 2605 int err; 2606 2607 if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT)) 2608 return -EOPNOTSUPP; 2609 2610 /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */ 2611 if (maxrate >> 12) { 2612 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS; 2613 params.rate_val = maxrate / 1000; 2614 } else if (maxrate) { 2615 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS; 2616 params.rate_val = maxrate; 2617 } else { /* zero serves to revoke the QP rate-limitation */ 2618 params.rate_unit = 0; 2619 params.rate_val = 0; 2620 } 2621 2622 err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT, 2623 ¶ms); 2624 return err; 2625 } 2626 2627 static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog) 2628 { 2629 struct mlx4_en_priv *priv = netdev_priv(dev); 2630 struct mlx4_en_dev *mdev = priv->mdev; 2631 struct bpf_prog *old_prog; 2632 int xdp_ring_num; 2633 int port_up = 0; 2634 int err; 2635 int i; 2636 2637 xdp_ring_num = prog ? ALIGN(priv->rx_ring_num, MLX4_EN_NUM_UP) : 0; 2638 2639 /* No need to reconfigure buffers when simply swapping the 2640 * program for a new one. 2641 */ 2642 if (priv->xdp_ring_num == xdp_ring_num) { 2643 if (prog) { 2644 prog = bpf_prog_add(prog, priv->rx_ring_num - 1); 2645 if (IS_ERR(prog)) 2646 return PTR_ERR(prog); 2647 } 2648 mutex_lock(&mdev->state_lock); 2649 for (i = 0; i < priv->rx_ring_num; i++) { 2650 old_prog = rcu_dereference_protected( 2651 priv->rx_ring[i]->xdp_prog, 2652 lockdep_is_held(&mdev->state_lock)); 2653 rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog); 2654 if (old_prog) 2655 bpf_prog_put(old_prog); 2656 } 2657 mutex_unlock(&mdev->state_lock); 2658 return 0; 2659 } 2660 2661 if (priv->num_frags > 1) { 2662 en_err(priv, "Cannot set XDP if MTU requires multiple frags\n"); 2663 return -EOPNOTSUPP; 2664 } 2665 2666 if (priv->tx_ring_num < xdp_ring_num + MLX4_EN_NUM_UP) { 2667 en_err(priv, 2668 "Minimum %d tx channels required to run XDP\n", 2669 (xdp_ring_num + MLX4_EN_NUM_UP) / MLX4_EN_NUM_UP); 2670 return -EINVAL; 2671 } 2672 2673 if (prog) { 2674 prog = bpf_prog_add(prog, priv->rx_ring_num - 1); 2675 if (IS_ERR(prog)) 2676 return PTR_ERR(prog); 2677 } 2678 2679 mutex_lock(&mdev->state_lock); 2680 if (priv->port_up) { 2681 port_up = 1; 2682 mlx4_en_stop_port(dev, 1); 2683 } 2684 2685 priv->xdp_ring_num = xdp_ring_num; 2686 netif_set_real_num_tx_queues(dev, priv->tx_ring_num - 2687 priv->xdp_ring_num); 2688 2689 for (i = 0; i < priv->rx_ring_num; i++) { 2690 old_prog = rcu_dereference_protected( 2691 priv->rx_ring[i]->xdp_prog, 2692 lockdep_is_held(&mdev->state_lock)); 2693 rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog); 2694 if (old_prog) 2695 bpf_prog_put(old_prog); 2696 } 2697 2698 if (port_up) { 2699 err = mlx4_en_start_port(dev); 2700 if (err) { 2701 en_err(priv, "Failed starting port %d for XDP change\n", 2702 priv->port); 2703 queue_work(mdev->workqueue, &priv->watchdog_task); 2704 } 2705 } 2706 2707 mutex_unlock(&mdev->state_lock); 2708 return 0; 2709 } 2710 2711 static bool mlx4_xdp_attached(struct net_device *dev) 2712 { 2713 struct mlx4_en_priv *priv = netdev_priv(dev); 2714 2715 return !!priv->xdp_ring_num; 2716 } 2717 2718 static int mlx4_xdp(struct net_device *dev, struct netdev_xdp *xdp) 2719 { 2720 switch (xdp->command) { 2721 case XDP_SETUP_PROG: 2722 return mlx4_xdp_set(dev, xdp->prog); 2723 case XDP_QUERY_PROG: 2724 xdp->prog_attached = mlx4_xdp_attached(dev); 2725 return 0; 2726 default: 2727 return -EINVAL; 2728 } 2729 } 2730 2731 static const struct net_device_ops mlx4_netdev_ops = { 2732 .ndo_open = mlx4_en_open, 2733 .ndo_stop = mlx4_en_close, 2734 .ndo_start_xmit = mlx4_en_xmit, 2735 .ndo_select_queue = mlx4_en_select_queue, 2736 .ndo_get_stats64 = mlx4_en_get_stats64, 2737 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2738 .ndo_set_mac_address = mlx4_en_set_mac, 2739 .ndo_validate_addr = eth_validate_addr, 2740 .ndo_change_mtu = mlx4_en_change_mtu, 2741 .ndo_do_ioctl = mlx4_en_ioctl, 2742 .ndo_tx_timeout = mlx4_en_tx_timeout, 2743 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2744 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2745 #ifdef CONFIG_NET_POLL_CONTROLLER 2746 .ndo_poll_controller = mlx4_en_netpoll, 2747 #endif 2748 .ndo_set_features = mlx4_en_set_features, 2749 .ndo_fix_features = mlx4_en_fix_features, 2750 .ndo_setup_tc = __mlx4_en_setup_tc, 2751 #ifdef CONFIG_RFS_ACCEL 2752 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2753 #endif 2754 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2755 .ndo_udp_tunnel_add = mlx4_en_add_vxlan_port, 2756 .ndo_udp_tunnel_del = mlx4_en_del_vxlan_port, 2757 .ndo_features_check = mlx4_en_features_check, 2758 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2759 .ndo_xdp = mlx4_xdp, 2760 }; 2761 2762 static const struct net_device_ops mlx4_netdev_ops_master = { 2763 .ndo_open = mlx4_en_open, 2764 .ndo_stop = mlx4_en_close, 2765 .ndo_start_xmit = mlx4_en_xmit, 2766 .ndo_select_queue = mlx4_en_select_queue, 2767 .ndo_get_stats64 = mlx4_en_get_stats64, 2768 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2769 .ndo_set_mac_address = mlx4_en_set_mac, 2770 .ndo_validate_addr = eth_validate_addr, 2771 .ndo_change_mtu = mlx4_en_change_mtu, 2772 .ndo_tx_timeout = mlx4_en_tx_timeout, 2773 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2774 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2775 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2776 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2777 .ndo_set_vf_rate = mlx4_en_set_vf_rate, 2778 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2779 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2780 .ndo_get_vf_stats = mlx4_en_get_vf_stats, 2781 .ndo_get_vf_config = mlx4_en_get_vf_config, 2782 #ifdef CONFIG_NET_POLL_CONTROLLER 2783 .ndo_poll_controller = mlx4_en_netpoll, 2784 #endif 2785 .ndo_set_features = mlx4_en_set_features, 2786 .ndo_fix_features = mlx4_en_fix_features, 2787 .ndo_setup_tc = __mlx4_en_setup_tc, 2788 #ifdef CONFIG_RFS_ACCEL 2789 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2790 #endif 2791 .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, 2792 .ndo_udp_tunnel_add = mlx4_en_add_vxlan_port, 2793 .ndo_udp_tunnel_del = mlx4_en_del_vxlan_port, 2794 .ndo_features_check = mlx4_en_features_check, 2795 .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, 2796 .ndo_xdp = mlx4_xdp, 2797 }; 2798 2799 struct mlx4_en_bond { 2800 struct work_struct work; 2801 struct mlx4_en_priv *priv; 2802 int is_bonded; 2803 struct mlx4_port_map port_map; 2804 }; 2805 2806 static void mlx4_en_bond_work(struct work_struct *work) 2807 { 2808 struct mlx4_en_bond *bond = container_of(work, 2809 struct mlx4_en_bond, 2810 work); 2811 int err = 0; 2812 struct mlx4_dev *dev = bond->priv->mdev->dev; 2813 2814 if (bond->is_bonded) { 2815 if (!mlx4_is_bonded(dev)) { 2816 err = mlx4_bond(dev); 2817 if (err) 2818 en_err(bond->priv, "Fail to bond device\n"); 2819 } 2820 if (!err) { 2821 err = mlx4_port_map_set(dev, &bond->port_map); 2822 if (err) 2823 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n", 2824 bond->port_map.port1, 2825 bond->port_map.port2, 2826 err); 2827 } 2828 } else if (mlx4_is_bonded(dev)) { 2829 err = mlx4_unbond(dev); 2830 if (err) 2831 en_err(bond->priv, "Fail to unbond device\n"); 2832 } 2833 dev_put(bond->priv->dev); 2834 kfree(bond); 2835 } 2836 2837 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded, 2838 u8 v2p_p1, u8 v2p_p2) 2839 { 2840 struct mlx4_en_bond *bond = NULL; 2841 2842 bond = kzalloc(sizeof(*bond), GFP_ATOMIC); 2843 if (!bond) 2844 return -ENOMEM; 2845 2846 INIT_WORK(&bond->work, mlx4_en_bond_work); 2847 bond->priv = priv; 2848 bond->is_bonded = is_bonded; 2849 bond->port_map.port1 = v2p_p1; 2850 bond->port_map.port2 = v2p_p2; 2851 dev_hold(priv->dev); 2852 queue_work(priv->mdev->workqueue, &bond->work); 2853 return 0; 2854 } 2855 2856 int mlx4_en_netdev_event(struct notifier_block *this, 2857 unsigned long event, void *ptr) 2858 { 2859 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 2860 u8 port = 0; 2861 struct mlx4_en_dev *mdev; 2862 struct mlx4_dev *dev; 2863 int i, num_eth_ports = 0; 2864 bool do_bond = true; 2865 struct mlx4_en_priv *priv; 2866 u8 v2p_port1 = 0; 2867 u8 v2p_port2 = 0; 2868 2869 if (!net_eq(dev_net(ndev), &init_net)) 2870 return NOTIFY_DONE; 2871 2872 mdev = container_of(this, struct mlx4_en_dev, nb); 2873 dev = mdev->dev; 2874 2875 /* Go into this mode only when two network devices set on two ports 2876 * of the same mlx4 device are slaves of the same bonding master 2877 */ 2878 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { 2879 ++num_eth_ports; 2880 if (!port && (mdev->pndev[i] == ndev)) 2881 port = i; 2882 mdev->upper[i] = mdev->pndev[i] ? 2883 netdev_master_upper_dev_get(mdev->pndev[i]) : NULL; 2884 /* condition not met: network device is a slave */ 2885 if (!mdev->upper[i]) 2886 do_bond = false; 2887 if (num_eth_ports < 2) 2888 continue; 2889 /* condition not met: same master */ 2890 if (mdev->upper[i] != mdev->upper[i-1]) 2891 do_bond = false; 2892 } 2893 /* condition not met: 2 salves */ 2894 do_bond = (num_eth_ports == 2) ? do_bond : false; 2895 2896 /* handle only events that come with enough info */ 2897 if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port) 2898 return NOTIFY_DONE; 2899 2900 priv = netdev_priv(ndev); 2901 if (do_bond) { 2902 struct netdev_notifier_bonding_info *notifier_info = ptr; 2903 struct netdev_bonding_info *bonding_info = 2904 ¬ifier_info->bonding_info; 2905 2906 /* required mode 1, 2 or 4 */ 2907 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) && 2908 (bonding_info->master.bond_mode != BOND_MODE_XOR) && 2909 (bonding_info->master.bond_mode != BOND_MODE_8023AD)) 2910 do_bond = false; 2911 2912 /* require exactly 2 slaves */ 2913 if (bonding_info->master.num_slaves != 2) 2914 do_bond = false; 2915 2916 /* calc v2p */ 2917 if (do_bond) { 2918 if (bonding_info->master.bond_mode == 2919 BOND_MODE_ACTIVEBACKUP) { 2920 /* in active-backup mode virtual ports are 2921 * mapped to the physical port of the active 2922 * slave */ 2923 if (bonding_info->slave.state == 2924 BOND_STATE_BACKUP) { 2925 if (port == 1) { 2926 v2p_port1 = 2; 2927 v2p_port2 = 2; 2928 } else { 2929 v2p_port1 = 1; 2930 v2p_port2 = 1; 2931 } 2932 } else { /* BOND_STATE_ACTIVE */ 2933 if (port == 1) { 2934 v2p_port1 = 1; 2935 v2p_port2 = 1; 2936 } else { 2937 v2p_port1 = 2; 2938 v2p_port2 = 2; 2939 } 2940 } 2941 } else { /* Active-Active */ 2942 /* in active-active mode a virtual port is 2943 * mapped to the native physical port if and only 2944 * if the physical port is up */ 2945 __s8 link = bonding_info->slave.link; 2946 2947 if (port == 1) 2948 v2p_port2 = 2; 2949 else 2950 v2p_port1 = 1; 2951 if ((link == BOND_LINK_UP) || 2952 (link == BOND_LINK_FAIL)) { 2953 if (port == 1) 2954 v2p_port1 = 1; 2955 else 2956 v2p_port2 = 2; 2957 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */ 2958 if (port == 1) 2959 v2p_port1 = 2; 2960 else 2961 v2p_port2 = 1; 2962 } 2963 } 2964 } 2965 } 2966 2967 mlx4_en_queue_bond_work(priv, do_bond, 2968 v2p_port1, v2p_port2); 2969 2970 return NOTIFY_DONE; 2971 } 2972 2973 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev, 2974 struct mlx4_en_stats_bitmap *stats_bitmap, 2975 u8 rx_ppp, u8 rx_pause, 2976 u8 tx_ppp, u8 tx_pause) 2977 { 2978 int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS; 2979 2980 if (!mlx4_is_slave(dev) && 2981 (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) { 2982 mutex_lock(&stats_bitmap->mutex); 2983 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS); 2984 2985 if (rx_ppp) 2986 bitmap_set(stats_bitmap->bitmap, last_i, 2987 NUM_FLOW_PRIORITY_STATS_RX); 2988 last_i += NUM_FLOW_PRIORITY_STATS_RX; 2989 2990 if (rx_pause && !(rx_ppp)) 2991 bitmap_set(stats_bitmap->bitmap, last_i, 2992 NUM_FLOW_STATS_RX); 2993 last_i += NUM_FLOW_STATS_RX; 2994 2995 if (tx_ppp) 2996 bitmap_set(stats_bitmap->bitmap, last_i, 2997 NUM_FLOW_PRIORITY_STATS_TX); 2998 last_i += NUM_FLOW_PRIORITY_STATS_TX; 2999 3000 if (tx_pause && !(tx_ppp)) 3001 bitmap_set(stats_bitmap->bitmap, last_i, 3002 NUM_FLOW_STATS_TX); 3003 last_i += NUM_FLOW_STATS_TX; 3004 3005 mutex_unlock(&stats_bitmap->mutex); 3006 } 3007 } 3008 3009 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev, 3010 struct mlx4_en_stats_bitmap *stats_bitmap, 3011 u8 rx_ppp, u8 rx_pause, 3012 u8 tx_ppp, u8 tx_pause) 3013 { 3014 int last_i = 0; 3015 3016 mutex_init(&stats_bitmap->mutex); 3017 bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS); 3018 3019 if (mlx4_is_slave(dev)) { 3020 bitmap_set(stats_bitmap->bitmap, last_i + 3021 MLX4_FIND_NETDEV_STAT(rx_packets), 1); 3022 bitmap_set(stats_bitmap->bitmap, last_i + 3023 MLX4_FIND_NETDEV_STAT(tx_packets), 1); 3024 bitmap_set(stats_bitmap->bitmap, last_i + 3025 MLX4_FIND_NETDEV_STAT(rx_bytes), 1); 3026 bitmap_set(stats_bitmap->bitmap, last_i + 3027 MLX4_FIND_NETDEV_STAT(tx_bytes), 1); 3028 bitmap_set(stats_bitmap->bitmap, last_i + 3029 MLX4_FIND_NETDEV_STAT(rx_dropped), 1); 3030 bitmap_set(stats_bitmap->bitmap, last_i + 3031 MLX4_FIND_NETDEV_STAT(tx_dropped), 1); 3032 } else { 3033 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS); 3034 } 3035 last_i += NUM_MAIN_STATS; 3036 3037 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS); 3038 last_i += NUM_PORT_STATS; 3039 3040 if (mlx4_is_master(dev)) 3041 bitmap_set(stats_bitmap->bitmap, last_i, 3042 NUM_PF_STATS); 3043 last_i += NUM_PF_STATS; 3044 3045 mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap, 3046 rx_ppp, rx_pause, 3047 tx_ppp, tx_pause); 3048 last_i += NUM_FLOW_STATS; 3049 3050 if (!mlx4_is_slave(dev)) 3051 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS); 3052 } 3053 3054 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 3055 struct mlx4_en_port_profile *prof) 3056 { 3057 struct net_device *dev; 3058 struct mlx4_en_priv *priv; 3059 int i; 3060 int err; 3061 3062 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 3063 MAX_TX_RINGS, MAX_RX_RINGS); 3064 if (dev == NULL) 3065 return -ENOMEM; 3066 3067 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 3068 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 3069 3070 SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev); 3071 dev->dev_port = port - 1; 3072 3073 /* 3074 * Initialize driver private data 3075 */ 3076 3077 priv = netdev_priv(dev); 3078 memset(priv, 0, sizeof(struct mlx4_en_priv)); 3079 priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); 3080 spin_lock_init(&priv->stats_lock); 3081 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 3082 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 3083 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 3084 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 3085 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 3086 INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads); 3087 INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads); 3088 #ifdef CONFIG_RFS_ACCEL 3089 INIT_LIST_HEAD(&priv->filters); 3090 spin_lock_init(&priv->filters_lock); 3091 #endif 3092 3093 priv->dev = dev; 3094 priv->mdev = mdev; 3095 priv->ddev = &mdev->pdev->dev; 3096 priv->prof = prof; 3097 priv->port = port; 3098 priv->port_up = false; 3099 priv->flags = prof->flags; 3100 priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME; 3101 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 3102 MLX4_WQE_CTRL_SOLICITED); 3103 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 3104 priv->tx_ring_num = prof->tx_ring_num; 3105 priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK; 3106 netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key)); 3107 3108 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, 3109 GFP_KERNEL); 3110 if (!priv->tx_ring) { 3111 err = -ENOMEM; 3112 goto out; 3113 } 3114 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS, 3115 GFP_KERNEL); 3116 if (!priv->tx_cq) { 3117 err = -ENOMEM; 3118 goto out; 3119 } 3120 priv->rx_ring_num = prof->rx_ring_num; 3121 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 3122 priv->cqe_size = mdev->dev->caps.cqe_size; 3123 priv->mac_index = -1; 3124 priv->msg_enable = MLX4_EN_MSG_LEVEL; 3125 #ifdef CONFIG_MLX4_EN_DCB 3126 if (!mlx4_is_slave(priv->mdev->dev)) { 3127 priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST | 3128 DCB_CAP_DCBX_VER_IEEE; 3129 priv->flags |= MLX4_EN_DCB_ENABLED; 3130 priv->cee_config.pfc_state = false; 3131 3132 for (i = 0; i < MLX4_EN_NUM_UP; i++) 3133 priv->cee_config.dcb_pfc[i] = pfc_disabled; 3134 3135 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) { 3136 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 3137 } else { 3138 en_info(priv, "enabling only PFC DCB ops\n"); 3139 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 3140 } 3141 } 3142 #endif 3143 3144 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 3145 INIT_HLIST_HEAD(&priv->mac_hash[i]); 3146 3147 /* Query for default mac and max mtu */ 3148 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 3149 3150 if (mdev->dev->caps.rx_checksum_flags_port[priv->port] & 3151 MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP) 3152 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP; 3153 3154 /* Set default MAC */ 3155 dev->addr_len = ETH_ALEN; 3156 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 3157 if (!is_valid_ether_addr(dev->dev_addr)) { 3158 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 3159 priv->port, dev->dev_addr); 3160 err = -EINVAL; 3161 goto out; 3162 } else if (mlx4_is_slave(priv->mdev->dev) && 3163 (priv->mdev->dev->port_random_macs & 1 << priv->port)) { 3164 /* Random MAC was assigned in mlx4_slave_cap 3165 * in mlx4_core module 3166 */ 3167 dev->addr_assign_type |= NET_ADDR_RANDOM; 3168 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 3169 } 3170 3171 memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac)); 3172 3173 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 3174 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 3175 err = mlx4_en_alloc_resources(priv); 3176 if (err) 3177 goto out; 3178 3179 /* Initialize time stamping config */ 3180 priv->hwtstamp_config.flags = 0; 3181 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 3182 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 3183 3184 /* Allocate page for receive rings */ 3185 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 3186 MLX4_EN_PAGE_SIZE); 3187 if (err) { 3188 en_err(priv, "Failed to allocate page for rx qps\n"); 3189 goto out; 3190 } 3191 priv->allocated = 1; 3192 3193 /* 3194 * Initialize netdev entry points 3195 */ 3196 if (mlx4_is_master(priv->mdev->dev)) 3197 dev->netdev_ops = &mlx4_netdev_ops_master; 3198 else 3199 dev->netdev_ops = &mlx4_netdev_ops; 3200 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 3201 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 3202 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 3203 3204 dev->ethtool_ops = &mlx4_en_ethtool_ops; 3205 3206 /* 3207 * Set driver features 3208 */ 3209 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 3210 if (mdev->LSO_support) 3211 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 3212 3213 dev->vlan_features = dev->hw_features; 3214 3215 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 3216 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 3217 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 3218 NETIF_F_HW_VLAN_CTAG_FILTER; 3219 dev->hw_features |= NETIF_F_LOOPBACK | 3220 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 3221 3222 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) { 3223 dev->features |= NETIF_F_HW_VLAN_STAG_RX | 3224 NETIF_F_HW_VLAN_STAG_FILTER; 3225 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX; 3226 } 3227 3228 if (mlx4_is_slave(mdev->dev)) { 3229 bool vlan_offload_disabled; 3230 int phv; 3231 3232 err = get_phv_bit(mdev->dev, port, &phv); 3233 if (!err && phv) { 3234 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 3235 priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV; 3236 } 3237 err = mlx4_get_is_vlan_offload_disabled(mdev->dev, port, 3238 &vlan_offload_disabled); 3239 if (!err && vlan_offload_disabled) { 3240 dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX | 3241 NETIF_F_HW_VLAN_CTAG_RX | 3242 NETIF_F_HW_VLAN_STAG_TX | 3243 NETIF_F_HW_VLAN_STAG_RX); 3244 dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX | 3245 NETIF_F_HW_VLAN_CTAG_RX | 3246 NETIF_F_HW_VLAN_STAG_TX | 3247 NETIF_F_HW_VLAN_STAG_RX); 3248 } 3249 } else { 3250 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN && 3251 !(mdev->dev->caps.flags2 & 3252 MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) 3253 dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; 3254 } 3255 3256 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) 3257 dev->hw_features |= NETIF_F_RXFCS; 3258 3259 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS) 3260 dev->hw_features |= NETIF_F_RXALL; 3261 3262 if (mdev->dev->caps.steering_mode == 3263 MLX4_STEERING_MODE_DEVICE_MANAGED && 3264 mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC) 3265 dev->hw_features |= NETIF_F_NTUPLE; 3266 3267 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 3268 dev->priv_flags |= IFF_UNICAST_FLT; 3269 3270 /* Setting a default hash function value */ 3271 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) { 3272 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 3273 } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) { 3274 priv->rss_hash_fn = ETH_RSS_HASH_XOR; 3275 } else { 3276 en_warn(priv, 3277 "No RSS hash capabilities exposed, using Toeplitz\n"); 3278 priv->rss_hash_fn = ETH_RSS_HASH_TOP; 3279 } 3280 3281 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 3282 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL | 3283 NETIF_F_GSO_UDP_TUNNEL_CSUM | 3284 NETIF_F_GSO_PARTIAL; 3285 dev->features |= NETIF_F_GSO_UDP_TUNNEL | 3286 NETIF_F_GSO_UDP_TUNNEL_CSUM | 3287 NETIF_F_GSO_PARTIAL; 3288 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM; 3289 } 3290 3291 mdev->pndev[port] = dev; 3292 mdev->upper[port] = NULL; 3293 3294 netif_carrier_off(dev); 3295 mlx4_en_set_default_moderation(priv); 3296 3297 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 3298 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 3299 3300 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 3301 3302 /* Configure port */ 3303 mlx4_en_calc_rx_buf(dev); 3304 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 3305 priv->rx_skb_size + ETH_FCS_LEN, 3306 prof->tx_pause, prof->tx_ppp, 3307 prof->rx_pause, prof->rx_ppp); 3308 if (err) { 3309 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 3310 priv->port, err); 3311 goto out; 3312 } 3313 3314 if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { 3315 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); 3316 if (err) { 3317 en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", 3318 err); 3319 goto out; 3320 } 3321 } 3322 3323 /* Init port */ 3324 en_warn(priv, "Initializing port\n"); 3325 err = mlx4_INIT_PORT(mdev->dev, priv->port); 3326 if (err) { 3327 en_err(priv, "Failed Initializing port\n"); 3328 goto out; 3329 } 3330 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 3331 3332 /* Initialize time stamp mechanism */ 3333 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 3334 mlx4_en_init_timestamp(mdev); 3335 3336 queue_delayed_work(mdev->workqueue, &priv->service_task, 3337 SERVICE_TASK_DELAY); 3338 3339 mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap, 3340 mdev->profile.prof[priv->port].rx_ppp, 3341 mdev->profile.prof[priv->port].rx_pause, 3342 mdev->profile.prof[priv->port].tx_ppp, 3343 mdev->profile.prof[priv->port].tx_pause); 3344 3345 err = register_netdev(dev); 3346 if (err) { 3347 en_err(priv, "Netdev registration failed for port %d\n", port); 3348 goto out; 3349 } 3350 3351 priv->registered = 1; 3352 devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port), 3353 dev); 3354 3355 return 0; 3356 3357 out: 3358 mlx4_en_destroy_netdev(dev); 3359 return err; 3360 } 3361 3362 int mlx4_en_reset_config(struct net_device *dev, 3363 struct hwtstamp_config ts_config, 3364 netdev_features_t features) 3365 { 3366 struct mlx4_en_priv *priv = netdev_priv(dev); 3367 struct mlx4_en_dev *mdev = priv->mdev; 3368 struct mlx4_en_port_profile new_prof; 3369 struct mlx4_en_priv *tmp; 3370 int port_up = 0; 3371 int err = 0; 3372 3373 if (priv->hwtstamp_config.tx_type == ts_config.tx_type && 3374 priv->hwtstamp_config.rx_filter == ts_config.rx_filter && 3375 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3376 !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) 3377 return 0; /* Nothing to change */ 3378 3379 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && 3380 (features & NETIF_F_HW_VLAN_CTAG_RX) && 3381 (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) { 3382 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n"); 3383 return -EINVAL; 3384 } 3385 3386 tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); 3387 if (!tmp) 3388 return -ENOMEM; 3389 3390 mutex_lock(&mdev->state_lock); 3391 3392 memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile)); 3393 memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config)); 3394 3395 err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof); 3396 if (err) 3397 goto out; 3398 3399 if (priv->port_up) { 3400 port_up = 1; 3401 mlx4_en_stop_port(dev, 1); 3402 } 3403 3404 en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n", 3405 ts_config.rx_filter, 3406 !!(features & NETIF_F_HW_VLAN_CTAG_RX)); 3407 3408 mlx4_en_safe_replace_resources(priv, tmp); 3409 3410 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) { 3411 if (features & NETIF_F_HW_VLAN_CTAG_RX) 3412 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3413 else 3414 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3415 } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) { 3416 /* RX time-stamping is OFF, update the RX vlan offload 3417 * to the latest wanted state 3418 */ 3419 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX) 3420 dev->features |= NETIF_F_HW_VLAN_CTAG_RX; 3421 else 3422 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3423 } 3424 3425 if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) { 3426 if (features & NETIF_F_RXFCS) 3427 dev->features |= NETIF_F_RXFCS; 3428 else 3429 dev->features &= ~NETIF_F_RXFCS; 3430 } 3431 3432 /* RX vlan offload and RX time-stamping can't co-exist ! 3433 * Regardless of the caller's choice, 3434 * Turn Off RX vlan offload in case of time-stamping is ON 3435 */ 3436 if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) { 3437 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 3438 en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n"); 3439 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 3440 } 3441 3442 if (port_up) { 3443 err = mlx4_en_start_port(dev); 3444 if (err) 3445 en_err(priv, "Failed starting port\n"); 3446 } 3447 3448 out: 3449 mutex_unlock(&mdev->state_lock); 3450 kfree(tmp); 3451 if (!err) 3452 netdev_features_change(dev); 3453 return err; 3454 } 3455