1 /* 2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 * 32 */ 33 34 #include <linux/etherdevice.h> 35 #include <linux/tcp.h> 36 #include <linux/if_vlan.h> 37 #include <linux/delay.h> 38 #include <linux/slab.h> 39 #include <linux/hash.h> 40 #include <net/ip.h> 41 #include <net/busy_poll.h> 42 43 #include <linux/mlx4/driver.h> 44 #include <linux/mlx4/device.h> 45 #include <linux/mlx4/cmd.h> 46 #include <linux/mlx4/cq.h> 47 48 #include "mlx4_en.h" 49 #include "en_port.h" 50 51 int mlx4_en_setup_tc(struct net_device *dev, u8 up) 52 { 53 struct mlx4_en_priv *priv = netdev_priv(dev); 54 int i; 55 unsigned int offset = 0; 56 57 if (up && up != MLX4_EN_NUM_UP) 58 return -EINVAL; 59 60 netdev_set_num_tc(dev, up); 61 62 /* Partition Tx queues evenly amongst UP's */ 63 for (i = 0; i < up; i++) { 64 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset); 65 offset += priv->num_tx_rings_p_up; 66 } 67 68 return 0; 69 } 70 71 #ifdef CONFIG_NET_RX_BUSY_POLL 72 /* must be called with local_bh_disable()d */ 73 static int mlx4_en_low_latency_recv(struct napi_struct *napi) 74 { 75 struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi); 76 struct net_device *dev = cq->dev; 77 struct mlx4_en_priv *priv = netdev_priv(dev); 78 struct mlx4_en_rx_ring *rx_ring = &priv->rx_ring[cq->ring]; 79 int done; 80 81 if (!priv->port_up) 82 return LL_FLUSH_FAILED; 83 84 if (!mlx4_en_cq_lock_poll(cq)) 85 return LL_FLUSH_BUSY; 86 87 done = mlx4_en_process_rx_cq(dev, cq, 4); 88 if (likely(done)) 89 rx_ring->cleaned += done; 90 else 91 rx_ring->misses++; 92 93 mlx4_en_cq_unlock_poll(cq); 94 95 return done; 96 } 97 #endif /* CONFIG_NET_RX_BUSY_POLL */ 98 99 #ifdef CONFIG_RFS_ACCEL 100 101 struct mlx4_en_filter { 102 struct list_head next; 103 struct work_struct work; 104 105 __be32 src_ip; 106 __be32 dst_ip; 107 __be16 src_port; 108 __be16 dst_port; 109 110 int rxq_index; 111 struct mlx4_en_priv *priv; 112 u32 flow_id; /* RFS infrastructure id */ 113 int id; /* mlx4_en driver id */ 114 u64 reg_id; /* Flow steering API id */ 115 u8 activated; /* Used to prevent expiry before filter 116 * is attached 117 */ 118 struct hlist_node filter_chain; 119 }; 120 121 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv); 122 123 static void mlx4_en_filter_work(struct work_struct *work) 124 { 125 struct mlx4_en_filter *filter = container_of(work, 126 struct mlx4_en_filter, 127 work); 128 struct mlx4_en_priv *priv = filter->priv; 129 struct mlx4_spec_list spec_tcp = { 130 .id = MLX4_NET_TRANS_RULE_ID_TCP, 131 { 132 .tcp_udp = { 133 .dst_port = filter->dst_port, 134 .dst_port_msk = (__force __be16)-1, 135 .src_port = filter->src_port, 136 .src_port_msk = (__force __be16)-1, 137 }, 138 }, 139 }; 140 struct mlx4_spec_list spec_ip = { 141 .id = MLX4_NET_TRANS_RULE_ID_IPV4, 142 { 143 .ipv4 = { 144 .dst_ip = filter->dst_ip, 145 .dst_ip_msk = (__force __be32)-1, 146 .src_ip = filter->src_ip, 147 .src_ip_msk = (__force __be32)-1, 148 }, 149 }, 150 }; 151 struct mlx4_spec_list spec_eth = { 152 .id = MLX4_NET_TRANS_RULE_ID_ETH, 153 }; 154 struct mlx4_net_trans_rule rule = { 155 .list = LIST_HEAD_INIT(rule.list), 156 .queue_mode = MLX4_NET_TRANS_Q_LIFO, 157 .exclusive = 1, 158 .allow_loopback = 1, 159 .promisc_mode = MLX4_FS_REGULAR, 160 .port = priv->port, 161 .priority = MLX4_DOMAIN_RFS, 162 }; 163 int rc; 164 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 165 166 list_add_tail(&spec_eth.list, &rule.list); 167 list_add_tail(&spec_ip.list, &rule.list); 168 list_add_tail(&spec_tcp.list, &rule.list); 169 170 rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn; 171 memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN); 172 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 173 174 filter->activated = 0; 175 176 if (filter->reg_id) { 177 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 178 if (rc && rc != -ENOENT) 179 en_err(priv, "Error detaching flow. rc = %d\n", rc); 180 } 181 182 rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id); 183 if (rc) 184 en_err(priv, "Error attaching flow. err = %d\n", rc); 185 186 mlx4_en_filter_rfs_expire(priv); 187 188 filter->activated = 1; 189 } 190 191 static inline struct hlist_head * 192 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 193 __be16 src_port, __be16 dst_port) 194 { 195 unsigned long l; 196 int bucket_idx; 197 198 l = (__force unsigned long)src_port | 199 ((__force unsigned long)dst_port << 2); 200 l ^= (__force unsigned long)(src_ip ^ dst_ip); 201 202 bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT); 203 204 return &priv->filter_hash[bucket_idx]; 205 } 206 207 static struct mlx4_en_filter * 208 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip, 209 __be32 dst_ip, __be16 src_port, __be16 dst_port, 210 u32 flow_id) 211 { 212 struct mlx4_en_filter *filter = NULL; 213 214 filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC); 215 if (!filter) 216 return NULL; 217 218 filter->priv = priv; 219 filter->rxq_index = rxq_index; 220 INIT_WORK(&filter->work, mlx4_en_filter_work); 221 222 filter->src_ip = src_ip; 223 filter->dst_ip = dst_ip; 224 filter->src_port = src_port; 225 filter->dst_port = dst_port; 226 227 filter->flow_id = flow_id; 228 229 filter->id = priv->last_filter_id++ % RPS_NO_FILTER; 230 231 list_add_tail(&filter->next, &priv->filters); 232 hlist_add_head(&filter->filter_chain, 233 filter_hash_bucket(priv, src_ip, dst_ip, src_port, 234 dst_port)); 235 236 return filter; 237 } 238 239 static void mlx4_en_filter_free(struct mlx4_en_filter *filter) 240 { 241 struct mlx4_en_priv *priv = filter->priv; 242 int rc; 243 244 list_del(&filter->next); 245 246 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); 247 if (rc && rc != -ENOENT) 248 en_err(priv, "Error detaching flow. rc = %d\n", rc); 249 250 kfree(filter); 251 } 252 253 static inline struct mlx4_en_filter * 254 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, 255 __be16 src_port, __be16 dst_port) 256 { 257 struct mlx4_en_filter *filter; 258 struct mlx4_en_filter *ret = NULL; 259 260 hlist_for_each_entry(filter, 261 filter_hash_bucket(priv, src_ip, dst_ip, 262 src_port, dst_port), 263 filter_chain) { 264 if (filter->src_ip == src_ip && 265 filter->dst_ip == dst_ip && 266 filter->src_port == src_port && 267 filter->dst_port == dst_port) { 268 ret = filter; 269 break; 270 } 271 } 272 273 return ret; 274 } 275 276 static int 277 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, 278 u16 rxq_index, u32 flow_id) 279 { 280 struct mlx4_en_priv *priv = netdev_priv(net_dev); 281 struct mlx4_en_filter *filter; 282 const struct iphdr *ip; 283 const __be16 *ports; 284 __be32 src_ip; 285 __be32 dst_ip; 286 __be16 src_port; 287 __be16 dst_port; 288 int nhoff = skb_network_offset(skb); 289 int ret = 0; 290 291 if (skb->protocol != htons(ETH_P_IP)) 292 return -EPROTONOSUPPORT; 293 294 ip = (const struct iphdr *)(skb->data + nhoff); 295 if (ip_is_fragment(ip)) 296 return -EPROTONOSUPPORT; 297 298 ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); 299 300 src_ip = ip->saddr; 301 dst_ip = ip->daddr; 302 src_port = ports[0]; 303 dst_port = ports[1]; 304 305 if (ip->protocol != IPPROTO_TCP) 306 return -EPROTONOSUPPORT; 307 308 spin_lock_bh(&priv->filters_lock); 309 filter = mlx4_en_filter_find(priv, src_ip, dst_ip, src_port, dst_port); 310 if (filter) { 311 if (filter->rxq_index == rxq_index) 312 goto out; 313 314 filter->rxq_index = rxq_index; 315 } else { 316 filter = mlx4_en_filter_alloc(priv, rxq_index, 317 src_ip, dst_ip, 318 src_port, dst_port, flow_id); 319 if (!filter) { 320 ret = -ENOMEM; 321 goto err; 322 } 323 } 324 325 queue_work(priv->mdev->workqueue, &filter->work); 326 327 out: 328 ret = filter->id; 329 err: 330 spin_unlock_bh(&priv->filters_lock); 331 332 return ret; 333 } 334 335 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv, 336 struct mlx4_en_rx_ring *rx_ring) 337 { 338 struct mlx4_en_filter *filter, *tmp; 339 LIST_HEAD(del_list); 340 341 spin_lock_bh(&priv->filters_lock); 342 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 343 list_move(&filter->next, &del_list); 344 hlist_del(&filter->filter_chain); 345 } 346 spin_unlock_bh(&priv->filters_lock); 347 348 list_for_each_entry_safe(filter, tmp, &del_list, next) { 349 cancel_work_sync(&filter->work); 350 mlx4_en_filter_free(filter); 351 } 352 } 353 354 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv) 355 { 356 struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL; 357 LIST_HEAD(del_list); 358 int i = 0; 359 360 spin_lock_bh(&priv->filters_lock); 361 list_for_each_entry_safe(filter, tmp, &priv->filters, next) { 362 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA) 363 break; 364 365 if (filter->activated && 366 !work_pending(&filter->work) && 367 rps_may_expire_flow(priv->dev, 368 filter->rxq_index, filter->flow_id, 369 filter->id)) { 370 list_move(&filter->next, &del_list); 371 hlist_del(&filter->filter_chain); 372 } else 373 last_filter = filter; 374 375 i++; 376 } 377 378 if (last_filter && (&last_filter->next != priv->filters.next)) 379 list_move(&priv->filters, &last_filter->next); 380 381 spin_unlock_bh(&priv->filters_lock); 382 383 list_for_each_entry_safe(filter, tmp, &del_list, next) 384 mlx4_en_filter_free(filter); 385 } 386 #endif 387 388 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev, 389 __be16 proto, u16 vid) 390 { 391 struct mlx4_en_priv *priv = netdev_priv(dev); 392 struct mlx4_en_dev *mdev = priv->mdev; 393 int err; 394 int idx; 395 396 en_dbg(HW, priv, "adding VLAN:%d\n", vid); 397 398 set_bit(vid, priv->active_vlans); 399 400 /* Add VID to port VLAN filter */ 401 mutex_lock(&mdev->state_lock); 402 if (mdev->device_up && priv->port_up) { 403 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 404 if (err) 405 en_err(priv, "Failed configuring VLAN filter\n"); 406 } 407 if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx)) 408 en_dbg(HW, priv, "failed adding vlan %d\n", vid); 409 mutex_unlock(&mdev->state_lock); 410 411 return 0; 412 } 413 414 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, 415 __be16 proto, u16 vid) 416 { 417 struct mlx4_en_priv *priv = netdev_priv(dev); 418 struct mlx4_en_dev *mdev = priv->mdev; 419 int err; 420 int idx; 421 422 en_dbg(HW, priv, "Killing VID:%d\n", vid); 423 424 clear_bit(vid, priv->active_vlans); 425 426 /* Remove VID from port VLAN filter */ 427 mutex_lock(&mdev->state_lock); 428 if (!mlx4_find_cached_vlan(mdev->dev, priv->port, vid, &idx)) 429 mlx4_unregister_vlan(mdev->dev, priv->port, idx); 430 else 431 en_dbg(HW, priv, "could not find vid %d in cache\n", vid); 432 433 if (mdev->device_up && priv->port_up) { 434 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 435 if (err) 436 en_err(priv, "Failed configuring VLAN filter\n"); 437 } 438 mutex_unlock(&mdev->state_lock); 439 440 return 0; 441 } 442 443 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) 444 { 445 int i; 446 for (i = ETH_ALEN - 1; i >= 0; --i) { 447 dst_mac[i] = src_mac & 0xff; 448 src_mac >>= 8; 449 } 450 memset(&dst_mac[ETH_ALEN], 0, 2); 451 } 452 453 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv, 454 unsigned char *mac, int *qpn, u64 *reg_id) 455 { 456 struct mlx4_en_dev *mdev = priv->mdev; 457 struct mlx4_dev *dev = mdev->dev; 458 int err; 459 460 switch (dev->caps.steering_mode) { 461 case MLX4_STEERING_MODE_B0: { 462 struct mlx4_qp qp; 463 u8 gid[16] = {0}; 464 465 qp.qpn = *qpn; 466 memcpy(&gid[10], mac, ETH_ALEN); 467 gid[5] = priv->port; 468 469 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH); 470 break; 471 } 472 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 473 struct mlx4_spec_list spec_eth = { {NULL} }; 474 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); 475 476 struct mlx4_net_trans_rule rule = { 477 .queue_mode = MLX4_NET_TRANS_Q_FIFO, 478 .exclusive = 0, 479 .allow_loopback = 1, 480 .promisc_mode = MLX4_FS_REGULAR, 481 .priority = MLX4_DOMAIN_NIC, 482 }; 483 484 rule.port = priv->port; 485 rule.qpn = *qpn; 486 INIT_LIST_HEAD(&rule.list); 487 488 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH; 489 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN); 490 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); 491 list_add_tail(&spec_eth.list, &rule.list); 492 493 err = mlx4_flow_attach(dev, &rule, reg_id); 494 break; 495 } 496 default: 497 return -EINVAL; 498 } 499 if (err) 500 en_warn(priv, "Failed Attaching Unicast\n"); 501 502 return err; 503 } 504 505 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv, 506 unsigned char *mac, int qpn, u64 reg_id) 507 { 508 struct mlx4_en_dev *mdev = priv->mdev; 509 struct mlx4_dev *dev = mdev->dev; 510 511 switch (dev->caps.steering_mode) { 512 case MLX4_STEERING_MODE_B0: { 513 struct mlx4_qp qp; 514 u8 gid[16] = {0}; 515 516 qp.qpn = qpn; 517 memcpy(&gid[10], mac, ETH_ALEN); 518 gid[5] = priv->port; 519 520 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH); 521 break; 522 } 523 case MLX4_STEERING_MODE_DEVICE_MANAGED: { 524 mlx4_flow_detach(dev, reg_id); 525 break; 526 } 527 default: 528 en_err(priv, "Invalid steering mode.\n"); 529 } 530 } 531 532 static int mlx4_en_get_qp(struct mlx4_en_priv *priv) 533 { 534 struct mlx4_en_dev *mdev = priv->mdev; 535 struct mlx4_dev *dev = mdev->dev; 536 struct mlx4_mac_entry *entry; 537 int index = 0; 538 int err = 0; 539 u64 reg_id; 540 int *qpn = &priv->base_qpn; 541 u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr); 542 543 en_dbg(DRV, priv, "Registering MAC: %pM for adding\n", 544 priv->dev->dev_addr); 545 index = mlx4_register_mac(dev, priv->port, mac); 546 if (index < 0) { 547 err = index; 548 en_err(priv, "Failed adding MAC: %pM\n", 549 priv->dev->dev_addr); 550 return err; 551 } 552 553 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 554 int base_qpn = mlx4_get_base_qpn(dev, priv->port); 555 *qpn = base_qpn + index; 556 return 0; 557 } 558 559 err = mlx4_qp_reserve_range(dev, 1, 1, qpn); 560 en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); 561 if (err) { 562 en_err(priv, "Failed to reserve qp for mac registration\n"); 563 goto qp_err; 564 } 565 566 err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); 567 if (err) 568 goto steer_err; 569 570 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 571 if (!entry) { 572 err = -ENOMEM; 573 goto alloc_err; 574 } 575 memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac)); 576 entry->reg_id = reg_id; 577 578 hlist_add_head_rcu(&entry->hlist, 579 &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); 580 581 return 0; 582 583 alloc_err: 584 mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); 585 586 steer_err: 587 mlx4_qp_release_range(dev, *qpn, 1); 588 589 qp_err: 590 mlx4_unregister_mac(dev, priv->port, mac); 591 return err; 592 } 593 594 static void mlx4_en_put_qp(struct mlx4_en_priv *priv) 595 { 596 struct mlx4_en_dev *mdev = priv->mdev; 597 struct mlx4_dev *dev = mdev->dev; 598 int qpn = priv->base_qpn; 599 u64 mac; 600 601 if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { 602 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr); 603 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 604 priv->dev->dev_addr); 605 mlx4_unregister_mac(dev, priv->port, mac); 606 } else { 607 struct mlx4_mac_entry *entry; 608 struct hlist_node *tmp; 609 struct hlist_head *bucket; 610 unsigned int i; 611 612 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 613 bucket = &priv->mac_hash[i]; 614 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 615 mac = mlx4_en_mac_to_u64(entry->mac); 616 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", 617 entry->mac); 618 mlx4_en_uc_steer_release(priv, entry->mac, 619 qpn, entry->reg_id); 620 621 mlx4_unregister_mac(dev, priv->port, mac); 622 hlist_del_rcu(&entry->hlist); 623 kfree_rcu(entry, rcu); 624 } 625 } 626 627 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", 628 priv->port, qpn); 629 mlx4_qp_release_range(dev, qpn, 1); 630 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 631 } 632 } 633 634 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, 635 unsigned char *new_mac, unsigned char *prev_mac) 636 { 637 struct mlx4_en_dev *mdev = priv->mdev; 638 struct mlx4_dev *dev = mdev->dev; 639 int err = 0; 640 u64 new_mac_u64 = mlx4_en_mac_to_u64(new_mac); 641 642 if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { 643 struct hlist_head *bucket; 644 unsigned int mac_hash; 645 struct mlx4_mac_entry *entry; 646 struct hlist_node *tmp; 647 u64 prev_mac_u64 = mlx4_en_mac_to_u64(prev_mac); 648 649 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; 650 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 651 if (ether_addr_equal_64bits(entry->mac, prev_mac)) { 652 mlx4_en_uc_steer_release(priv, entry->mac, 653 qpn, entry->reg_id); 654 mlx4_unregister_mac(dev, priv->port, 655 prev_mac_u64); 656 hlist_del_rcu(&entry->hlist); 657 synchronize_rcu(); 658 memcpy(entry->mac, new_mac, ETH_ALEN); 659 entry->reg_id = 0; 660 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; 661 hlist_add_head_rcu(&entry->hlist, 662 &priv->mac_hash[mac_hash]); 663 mlx4_register_mac(dev, priv->port, new_mac_u64); 664 err = mlx4_en_uc_steer_add(priv, new_mac, 665 &qpn, 666 &entry->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 u64 mlx4_en_mac_to_u64(u8 *addr) 677 { 678 u64 mac = 0; 679 int i; 680 681 for (i = 0; i < ETH_ALEN; i++) { 682 mac <<= 8; 683 mac |= addr[i]; 684 } 685 return mac; 686 } 687 688 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv) 689 { 690 int err = 0; 691 692 if (priv->port_up) { 693 /* Remove old MAC and insert the new one */ 694 err = mlx4_en_replace_mac(priv, priv->base_qpn, 695 priv->dev->dev_addr, priv->prev_mac); 696 if (err) 697 en_err(priv, "Failed changing HW MAC address\n"); 698 memcpy(priv->prev_mac, priv->dev->dev_addr, 699 sizeof(priv->prev_mac)); 700 } else 701 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); 702 703 return err; 704 } 705 706 static int mlx4_en_set_mac(struct net_device *dev, void *addr) 707 { 708 struct mlx4_en_priv *priv = netdev_priv(dev); 709 struct mlx4_en_dev *mdev = priv->mdev; 710 struct sockaddr *saddr = addr; 711 int err; 712 713 if (!is_valid_ether_addr(saddr->sa_data)) 714 return -EADDRNOTAVAIL; 715 716 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); 717 718 mutex_lock(&mdev->state_lock); 719 err = mlx4_en_do_set_mac(priv); 720 mutex_unlock(&mdev->state_lock); 721 722 return err; 723 } 724 725 static void mlx4_en_clear_list(struct net_device *dev) 726 { 727 struct mlx4_en_priv *priv = netdev_priv(dev); 728 struct mlx4_en_mc_list *tmp, *mc_to_del; 729 730 list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { 731 list_del(&mc_to_del->list); 732 kfree(mc_to_del); 733 } 734 } 735 736 static void mlx4_en_cache_mclist(struct net_device *dev) 737 { 738 struct mlx4_en_priv *priv = netdev_priv(dev); 739 struct netdev_hw_addr *ha; 740 struct mlx4_en_mc_list *tmp; 741 742 mlx4_en_clear_list(dev); 743 netdev_for_each_mc_addr(ha, dev) { 744 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); 745 if (!tmp) { 746 mlx4_en_clear_list(dev); 747 return; 748 } 749 memcpy(tmp->addr, ha->addr, ETH_ALEN); 750 list_add_tail(&tmp->list, &priv->mc_list); 751 } 752 } 753 754 static void update_mclist_flags(struct mlx4_en_priv *priv, 755 struct list_head *dst, 756 struct list_head *src) 757 { 758 struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; 759 bool found; 760 761 /* Find all the entries that should be removed from dst, 762 * These are the entries that are not found in src 763 */ 764 list_for_each_entry(dst_tmp, dst, list) { 765 found = false; 766 list_for_each_entry(src_tmp, src, list) { 767 if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) { 768 found = true; 769 break; 770 } 771 } 772 if (!found) 773 dst_tmp->action = MCLIST_REM; 774 } 775 776 /* Add entries that exist in src but not in dst 777 * mark them as need to add 778 */ 779 list_for_each_entry(src_tmp, src, list) { 780 found = false; 781 list_for_each_entry(dst_tmp, dst, list) { 782 if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) { 783 dst_tmp->action = MCLIST_NONE; 784 found = true; 785 break; 786 } 787 } 788 if (!found) { 789 new_mc = kmemdup(src_tmp, 790 sizeof(struct mlx4_en_mc_list), 791 GFP_KERNEL); 792 if (!new_mc) 793 return; 794 795 new_mc->action = MCLIST_ADD; 796 list_add_tail(&new_mc->list, dst); 797 } 798 } 799 } 800 801 static void mlx4_en_set_rx_mode(struct net_device *dev) 802 { 803 struct mlx4_en_priv *priv = netdev_priv(dev); 804 805 if (!priv->port_up) 806 return; 807 808 queue_work(priv->mdev->workqueue, &priv->rx_mode_task); 809 } 810 811 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, 812 struct mlx4_en_dev *mdev) 813 { 814 int err = 0; 815 816 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { 817 if (netif_msg_rx_status(priv)) 818 en_warn(priv, "Entering promiscuous mode\n"); 819 priv->flags |= MLX4_EN_FLAG_PROMISC; 820 821 /* Enable promiscouos mode */ 822 switch (mdev->dev->caps.steering_mode) { 823 case MLX4_STEERING_MODE_DEVICE_MANAGED: 824 err = mlx4_flow_steer_promisc_add(mdev->dev, 825 priv->port, 826 priv->base_qpn, 827 MLX4_FS_ALL_DEFAULT); 828 if (err) 829 en_err(priv, "Failed enabling promiscuous mode\n"); 830 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 831 break; 832 833 case MLX4_STEERING_MODE_B0: 834 err = mlx4_unicast_promisc_add(mdev->dev, 835 priv->base_qpn, 836 priv->port); 837 if (err) 838 en_err(priv, "Failed enabling unicast promiscuous mode\n"); 839 840 /* Add the default qp number as multicast 841 * promisc 842 */ 843 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 844 err = mlx4_multicast_promisc_add(mdev->dev, 845 priv->base_qpn, 846 priv->port); 847 if (err) 848 en_err(priv, "Failed enabling multicast promiscuous mode\n"); 849 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 850 } 851 break; 852 853 case MLX4_STEERING_MODE_A0: 854 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 855 priv->port, 856 priv->base_qpn, 857 1); 858 if (err) 859 en_err(priv, "Failed enabling promiscuous mode\n"); 860 break; 861 } 862 863 /* Disable port multicast filter (unconditionally) */ 864 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 865 0, MLX4_MCAST_DISABLE); 866 if (err) 867 en_err(priv, "Failed disabling multicast filter\n"); 868 869 /* Disable port VLAN filter */ 870 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 871 if (err) 872 en_err(priv, "Failed disabling VLAN filter\n"); 873 } 874 } 875 876 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv, 877 struct mlx4_en_dev *mdev) 878 { 879 int err = 0; 880 881 if (netif_msg_rx_status(priv)) 882 en_warn(priv, "Leaving promiscuous mode\n"); 883 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 884 885 /* Disable promiscouos mode */ 886 switch (mdev->dev->caps.steering_mode) { 887 case MLX4_STEERING_MODE_DEVICE_MANAGED: 888 err = mlx4_flow_steer_promisc_remove(mdev->dev, 889 priv->port, 890 MLX4_FS_ALL_DEFAULT); 891 if (err) 892 en_err(priv, "Failed disabling promiscuous mode\n"); 893 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 894 break; 895 896 case MLX4_STEERING_MODE_B0: 897 err = mlx4_unicast_promisc_remove(mdev->dev, 898 priv->base_qpn, 899 priv->port); 900 if (err) 901 en_err(priv, "Failed disabling unicast promiscuous mode\n"); 902 /* Disable Multicast promisc */ 903 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 904 err = mlx4_multicast_promisc_remove(mdev->dev, 905 priv->base_qpn, 906 priv->port); 907 if (err) 908 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 909 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 910 } 911 break; 912 913 case MLX4_STEERING_MODE_A0: 914 err = mlx4_SET_PORT_qpn_calc(mdev->dev, 915 priv->port, 916 priv->base_qpn, 0); 917 if (err) 918 en_err(priv, "Failed disabling promiscuous mode\n"); 919 break; 920 } 921 922 /* Enable port VLAN filter */ 923 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); 924 if (err) 925 en_err(priv, "Failed enabling VLAN filter\n"); 926 } 927 928 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, 929 struct net_device *dev, 930 struct mlx4_en_dev *mdev) 931 { 932 struct mlx4_en_mc_list *mclist, *tmp; 933 u64 mcast_addr = 0; 934 u8 mc_list[16] = {0}; 935 int err = 0; 936 937 /* Enable/disable the multicast filter according to IFF_ALLMULTI */ 938 if (dev->flags & IFF_ALLMULTI) { 939 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 940 0, MLX4_MCAST_DISABLE); 941 if (err) 942 en_err(priv, "Failed disabling multicast filter\n"); 943 944 /* Add the default qp number as multicast promisc */ 945 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { 946 switch (mdev->dev->caps.steering_mode) { 947 case MLX4_STEERING_MODE_DEVICE_MANAGED: 948 err = mlx4_flow_steer_promisc_add(mdev->dev, 949 priv->port, 950 priv->base_qpn, 951 MLX4_FS_MC_DEFAULT); 952 break; 953 954 case MLX4_STEERING_MODE_B0: 955 err = mlx4_multicast_promisc_add(mdev->dev, 956 priv->base_qpn, 957 priv->port); 958 break; 959 960 case MLX4_STEERING_MODE_A0: 961 break; 962 } 963 if (err) 964 en_err(priv, "Failed entering multicast promisc mode\n"); 965 priv->flags |= MLX4_EN_FLAG_MC_PROMISC; 966 } 967 } else { 968 /* Disable Multicast promisc */ 969 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 970 switch (mdev->dev->caps.steering_mode) { 971 case MLX4_STEERING_MODE_DEVICE_MANAGED: 972 err = mlx4_flow_steer_promisc_remove(mdev->dev, 973 priv->port, 974 MLX4_FS_MC_DEFAULT); 975 break; 976 977 case MLX4_STEERING_MODE_B0: 978 err = mlx4_multicast_promisc_remove(mdev->dev, 979 priv->base_qpn, 980 priv->port); 981 break; 982 983 case MLX4_STEERING_MODE_A0: 984 break; 985 } 986 if (err) 987 en_err(priv, "Failed disabling multicast promiscuous mode\n"); 988 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 989 } 990 991 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 992 0, MLX4_MCAST_DISABLE); 993 if (err) 994 en_err(priv, "Failed disabling multicast filter\n"); 995 996 /* Flush mcast filter and init it with broadcast address */ 997 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, 998 1, MLX4_MCAST_CONFIG); 999 1000 /* Update multicast list - we cache all addresses so they won't 1001 * change while HW is updated holding the command semaphor */ 1002 netif_addr_lock_bh(dev); 1003 mlx4_en_cache_mclist(dev); 1004 netif_addr_unlock_bh(dev); 1005 list_for_each_entry(mclist, &priv->mc_list, list) { 1006 mcast_addr = mlx4_en_mac_to_u64(mclist->addr); 1007 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 1008 mcast_addr, 0, MLX4_MCAST_CONFIG); 1009 } 1010 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1011 0, MLX4_MCAST_ENABLE); 1012 if (err) 1013 en_err(priv, "Failed enabling multicast filter\n"); 1014 1015 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); 1016 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1017 if (mclist->action == MCLIST_REM) { 1018 /* detach this address and delete from list */ 1019 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1020 mc_list[5] = priv->port; 1021 err = mlx4_multicast_detach(mdev->dev, 1022 &priv->rss_map.indir_qp, 1023 mc_list, 1024 MLX4_PROT_ETH, 1025 mclist->reg_id); 1026 if (err) 1027 en_err(priv, "Fail to detach multicast address\n"); 1028 1029 /* remove from list */ 1030 list_del(&mclist->list); 1031 kfree(mclist); 1032 } else if (mclist->action == MCLIST_ADD) { 1033 /* attach the address */ 1034 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1035 /* needed for B0 steering support */ 1036 mc_list[5] = priv->port; 1037 err = mlx4_multicast_attach(mdev->dev, 1038 &priv->rss_map.indir_qp, 1039 mc_list, 1040 priv->port, 0, 1041 MLX4_PROT_ETH, 1042 &mclist->reg_id); 1043 if (err) 1044 en_err(priv, "Fail to attach multicast address\n"); 1045 1046 } 1047 } 1048 } 1049 } 1050 1051 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, 1052 struct net_device *dev, 1053 struct mlx4_en_dev *mdev) 1054 { 1055 struct netdev_hw_addr *ha; 1056 struct mlx4_mac_entry *entry; 1057 struct hlist_node *tmp; 1058 bool found; 1059 u64 mac; 1060 int err = 0; 1061 struct hlist_head *bucket; 1062 unsigned int i; 1063 int removed = 0; 1064 u32 prev_flags; 1065 1066 /* Note that we do not need to protect our mac_hash traversal with rcu, 1067 * since all modification code is protected by mdev->state_lock 1068 */ 1069 1070 /* find what to remove */ 1071 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { 1072 bucket = &priv->mac_hash[i]; 1073 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { 1074 found = false; 1075 netdev_for_each_uc_addr(ha, dev) { 1076 if (ether_addr_equal_64bits(entry->mac, 1077 ha->addr)) { 1078 found = true; 1079 break; 1080 } 1081 } 1082 1083 /* MAC address of the port is not in uc list */ 1084 if (ether_addr_equal_64bits(entry->mac, dev->dev_addr)) 1085 found = true; 1086 1087 if (!found) { 1088 mac = mlx4_en_mac_to_u64(entry->mac); 1089 mlx4_en_uc_steer_release(priv, entry->mac, 1090 priv->base_qpn, 1091 entry->reg_id); 1092 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1093 1094 hlist_del_rcu(&entry->hlist); 1095 kfree_rcu(entry, rcu); 1096 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", 1097 entry->mac, priv->port); 1098 ++removed; 1099 } 1100 } 1101 } 1102 1103 /* if we didn't remove anything, there is no use in trying to add 1104 * again once we are in a forced promisc mode state 1105 */ 1106 if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) 1107 return; 1108 1109 prev_flags = priv->flags; 1110 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; 1111 1112 /* find what to add */ 1113 netdev_for_each_uc_addr(ha, dev) { 1114 found = false; 1115 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; 1116 hlist_for_each_entry(entry, bucket, hlist) { 1117 if (ether_addr_equal_64bits(entry->mac, ha->addr)) { 1118 found = true; 1119 break; 1120 } 1121 } 1122 1123 if (!found) { 1124 entry = kmalloc(sizeof(*entry), GFP_KERNEL); 1125 if (!entry) { 1126 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", 1127 ha->addr, priv->port); 1128 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1129 break; 1130 } 1131 mac = mlx4_en_mac_to_u64(ha->addr); 1132 memcpy(entry->mac, ha->addr, ETH_ALEN); 1133 err = mlx4_register_mac(mdev->dev, priv->port, mac); 1134 if (err < 0) { 1135 en_err(priv, "Failed registering MAC %pM on port %d: %d\n", 1136 ha->addr, priv->port, err); 1137 kfree(entry); 1138 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1139 break; 1140 } 1141 err = mlx4_en_uc_steer_add(priv, ha->addr, 1142 &priv->base_qpn, 1143 &entry->reg_id); 1144 if (err) { 1145 en_err(priv, "Failed adding MAC %pM on port %d: %d\n", 1146 ha->addr, priv->port, err); 1147 mlx4_unregister_mac(mdev->dev, priv->port, mac); 1148 kfree(entry); 1149 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; 1150 break; 1151 } else { 1152 unsigned int mac_hash; 1153 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", 1154 ha->addr, priv->port); 1155 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; 1156 bucket = &priv->mac_hash[mac_hash]; 1157 hlist_add_head_rcu(&entry->hlist, bucket); 1158 } 1159 } 1160 } 1161 1162 if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1163 en_warn(priv, "Forcing promiscuous mode on port:%d\n", 1164 priv->port); 1165 } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { 1166 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", 1167 priv->port); 1168 } 1169 } 1170 1171 static void mlx4_en_do_set_rx_mode(struct work_struct *work) 1172 { 1173 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1174 rx_mode_task); 1175 struct mlx4_en_dev *mdev = priv->mdev; 1176 struct net_device *dev = priv->dev; 1177 1178 mutex_lock(&mdev->state_lock); 1179 if (!mdev->device_up) { 1180 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); 1181 goto out; 1182 } 1183 if (!priv->port_up) { 1184 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); 1185 goto out; 1186 } 1187 1188 if (!netif_carrier_ok(dev)) { 1189 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { 1190 if (priv->port_state.link_state) { 1191 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; 1192 netif_carrier_on(dev); 1193 en_dbg(LINK, priv, "Link Up\n"); 1194 } 1195 } 1196 } 1197 1198 if (dev->priv_flags & IFF_UNICAST_FLT) 1199 mlx4_en_do_uc_filter(priv, dev, mdev); 1200 1201 /* Promsicuous mode: disable all filters */ 1202 if ((dev->flags & IFF_PROMISC) || 1203 (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { 1204 mlx4_en_set_promisc_mode(priv, mdev); 1205 goto out; 1206 } 1207 1208 /* Not in promiscuous mode */ 1209 if (priv->flags & MLX4_EN_FLAG_PROMISC) 1210 mlx4_en_clear_promisc_mode(priv, mdev); 1211 1212 mlx4_en_do_multicast(priv, dev, mdev); 1213 out: 1214 mutex_unlock(&mdev->state_lock); 1215 } 1216 1217 #ifdef CONFIG_NET_POLL_CONTROLLER 1218 static void mlx4_en_netpoll(struct net_device *dev) 1219 { 1220 struct mlx4_en_priv *priv = netdev_priv(dev); 1221 struct mlx4_en_cq *cq; 1222 unsigned long flags; 1223 int i; 1224 1225 for (i = 0; i < priv->rx_ring_num; i++) { 1226 cq = &priv->rx_cq[i]; 1227 spin_lock_irqsave(&cq->lock, flags); 1228 napi_synchronize(&cq->napi); 1229 mlx4_en_process_rx_cq(dev, cq, 0); 1230 spin_unlock_irqrestore(&cq->lock, flags); 1231 } 1232 } 1233 #endif 1234 1235 static void mlx4_en_tx_timeout(struct net_device *dev) 1236 { 1237 struct mlx4_en_priv *priv = netdev_priv(dev); 1238 struct mlx4_en_dev *mdev = priv->mdev; 1239 int i; 1240 1241 if (netif_msg_timer(priv)) 1242 en_warn(priv, "Tx timeout called on port:%d\n", priv->port); 1243 1244 for (i = 0; i < priv->tx_ring_num; i++) { 1245 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) 1246 continue; 1247 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", 1248 i, priv->tx_ring[i].qpn, priv->tx_ring[i].cqn, 1249 priv->tx_ring[i].cons, priv->tx_ring[i].prod); 1250 } 1251 1252 priv->port_stats.tx_timeout++; 1253 en_dbg(DRV, priv, "Scheduling watchdog\n"); 1254 queue_work(mdev->workqueue, &priv->watchdog_task); 1255 } 1256 1257 1258 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev) 1259 { 1260 struct mlx4_en_priv *priv = netdev_priv(dev); 1261 1262 spin_lock_bh(&priv->stats_lock); 1263 memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats)); 1264 spin_unlock_bh(&priv->stats_lock); 1265 1266 return &priv->ret_stats; 1267 } 1268 1269 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) 1270 { 1271 struct mlx4_en_cq *cq; 1272 int i; 1273 1274 /* If we haven't received a specific coalescing setting 1275 * (module param), we set the moderation parameters as follows: 1276 * - moder_cnt is set to the number of mtu sized packets to 1277 * satisfy our coalescing target. 1278 * - moder_time is set to a fixed value. 1279 */ 1280 priv->rx_frames = MLX4_EN_RX_COAL_TARGET; 1281 priv->rx_usecs = MLX4_EN_RX_COAL_TIME; 1282 priv->tx_frames = MLX4_EN_TX_COAL_PKTS; 1283 priv->tx_usecs = MLX4_EN_TX_COAL_TIME; 1284 en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", 1285 priv->dev->mtu, priv->rx_frames, priv->rx_usecs); 1286 1287 /* Setup cq moderation params */ 1288 for (i = 0; i < priv->rx_ring_num; i++) { 1289 cq = &priv->rx_cq[i]; 1290 cq->moder_cnt = priv->rx_frames; 1291 cq->moder_time = priv->rx_usecs; 1292 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; 1293 priv->last_moder_packets[i] = 0; 1294 priv->last_moder_bytes[i] = 0; 1295 } 1296 1297 for (i = 0; i < priv->tx_ring_num; i++) { 1298 cq = &priv->tx_cq[i]; 1299 cq->moder_cnt = priv->tx_frames; 1300 cq->moder_time = priv->tx_usecs; 1301 } 1302 1303 /* Reset auto-moderation params */ 1304 priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; 1305 priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; 1306 priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; 1307 priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; 1308 priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; 1309 priv->adaptive_rx_coal = 1; 1310 priv->last_moder_jiffies = 0; 1311 priv->last_moder_tx_packets = 0; 1312 } 1313 1314 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) 1315 { 1316 unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); 1317 struct mlx4_en_cq *cq; 1318 unsigned long packets; 1319 unsigned long rate; 1320 unsigned long avg_pkt_size; 1321 unsigned long rx_packets; 1322 unsigned long rx_bytes; 1323 unsigned long rx_pkt_diff; 1324 int moder_time; 1325 int ring, err; 1326 1327 if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) 1328 return; 1329 1330 for (ring = 0; ring < priv->rx_ring_num; ring++) { 1331 spin_lock_bh(&priv->stats_lock); 1332 rx_packets = priv->rx_ring[ring].packets; 1333 rx_bytes = priv->rx_ring[ring].bytes; 1334 spin_unlock_bh(&priv->stats_lock); 1335 1336 rx_pkt_diff = ((unsigned long) (rx_packets - 1337 priv->last_moder_packets[ring])); 1338 packets = rx_pkt_diff; 1339 rate = packets * HZ / period; 1340 avg_pkt_size = packets ? ((unsigned long) (rx_bytes - 1341 priv->last_moder_bytes[ring])) / packets : 0; 1342 1343 /* Apply auto-moderation only when packet rate 1344 * exceeds a rate that it matters */ 1345 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && 1346 avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { 1347 if (rate < priv->pkt_rate_low) 1348 moder_time = priv->rx_usecs_low; 1349 else if (rate > priv->pkt_rate_high) 1350 moder_time = priv->rx_usecs_high; 1351 else 1352 moder_time = (rate - priv->pkt_rate_low) * 1353 (priv->rx_usecs_high - priv->rx_usecs_low) / 1354 (priv->pkt_rate_high - priv->pkt_rate_low) + 1355 priv->rx_usecs_low; 1356 } else { 1357 moder_time = priv->rx_usecs_low; 1358 } 1359 1360 if (moder_time != priv->last_moder_time[ring]) { 1361 priv->last_moder_time[ring] = moder_time; 1362 cq = &priv->rx_cq[ring]; 1363 cq->moder_time = moder_time; 1364 cq->moder_cnt = priv->rx_frames; 1365 err = mlx4_en_set_cq_moder(priv, cq); 1366 if (err) 1367 en_err(priv, "Failed modifying moderation for cq:%d\n", 1368 ring); 1369 } 1370 priv->last_moder_packets[ring] = rx_packets; 1371 priv->last_moder_bytes[ring] = rx_bytes; 1372 } 1373 1374 priv->last_moder_jiffies = jiffies; 1375 } 1376 1377 static void mlx4_en_do_get_stats(struct work_struct *work) 1378 { 1379 struct delayed_work *delay = to_delayed_work(work); 1380 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1381 stats_task); 1382 struct mlx4_en_dev *mdev = priv->mdev; 1383 int err; 1384 1385 mutex_lock(&mdev->state_lock); 1386 if (mdev->device_up) { 1387 if (priv->port_up) { 1388 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); 1389 if (err) 1390 en_dbg(HW, priv, "Could not update stats\n"); 1391 1392 mlx4_en_auto_moderation(priv); 1393 } 1394 1395 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 1396 } 1397 if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { 1398 mlx4_en_do_set_mac(priv); 1399 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; 1400 } 1401 mutex_unlock(&mdev->state_lock); 1402 } 1403 1404 /* mlx4_en_service_task - Run service task for tasks that needed to be done 1405 * periodically 1406 */ 1407 static void mlx4_en_service_task(struct work_struct *work) 1408 { 1409 struct delayed_work *delay = to_delayed_work(work); 1410 struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, 1411 service_task); 1412 struct mlx4_en_dev *mdev = priv->mdev; 1413 1414 mutex_lock(&mdev->state_lock); 1415 if (mdev->device_up) { 1416 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 1417 mlx4_en_ptp_overflow_check(mdev); 1418 1419 queue_delayed_work(mdev->workqueue, &priv->service_task, 1420 SERVICE_TASK_DELAY); 1421 } 1422 mutex_unlock(&mdev->state_lock); 1423 } 1424 1425 static void mlx4_en_linkstate(struct work_struct *work) 1426 { 1427 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1428 linkstate_task); 1429 struct mlx4_en_dev *mdev = priv->mdev; 1430 int linkstate = priv->link_state; 1431 1432 mutex_lock(&mdev->state_lock); 1433 /* If observable port state changed set carrier state and 1434 * report to system log */ 1435 if (priv->last_link_state != linkstate) { 1436 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { 1437 en_info(priv, "Link Down\n"); 1438 netif_carrier_off(priv->dev); 1439 } else { 1440 en_info(priv, "Link Up\n"); 1441 netif_carrier_on(priv->dev); 1442 } 1443 } 1444 priv->last_link_state = linkstate; 1445 mutex_unlock(&mdev->state_lock); 1446 } 1447 1448 1449 int mlx4_en_start_port(struct net_device *dev) 1450 { 1451 struct mlx4_en_priv *priv = netdev_priv(dev); 1452 struct mlx4_en_dev *mdev = priv->mdev; 1453 struct mlx4_en_cq *cq; 1454 struct mlx4_en_tx_ring *tx_ring; 1455 int rx_index = 0; 1456 int tx_index = 0; 1457 int err = 0; 1458 int i; 1459 int j; 1460 u8 mc_list[16] = {0}; 1461 1462 if (priv->port_up) { 1463 en_dbg(DRV, priv, "start port called while port already up\n"); 1464 return 0; 1465 } 1466 1467 INIT_LIST_HEAD(&priv->mc_list); 1468 INIT_LIST_HEAD(&priv->curr_list); 1469 INIT_LIST_HEAD(&priv->ethtool_list); 1470 memset(&priv->ethtool_rules[0], 0, 1471 sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); 1472 1473 /* Calculate Rx buf size */ 1474 dev->mtu = min(dev->mtu, priv->max_mtu); 1475 mlx4_en_calc_rx_buf(dev); 1476 en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); 1477 1478 /* Configure rx cq's and rings */ 1479 err = mlx4_en_activate_rx_rings(priv); 1480 if (err) { 1481 en_err(priv, "Failed to activate RX rings\n"); 1482 return err; 1483 } 1484 for (i = 0; i < priv->rx_ring_num; i++) { 1485 cq = &priv->rx_cq[i]; 1486 1487 mlx4_en_cq_init_lock(cq); 1488 1489 err = mlx4_en_activate_cq(priv, cq, i); 1490 if (err) { 1491 en_err(priv, "Failed activating Rx CQ\n"); 1492 goto cq_err; 1493 } 1494 for (j = 0; j < cq->size; j++) 1495 cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK; 1496 err = mlx4_en_set_cq_moder(priv, cq); 1497 if (err) { 1498 en_err(priv, "Failed setting cq moderation parameters"); 1499 mlx4_en_deactivate_cq(priv, cq); 1500 goto cq_err; 1501 } 1502 mlx4_en_arm_cq(priv, cq); 1503 priv->rx_ring[i].cqn = cq->mcq.cqn; 1504 ++rx_index; 1505 } 1506 1507 /* Set qp number */ 1508 en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); 1509 err = mlx4_en_get_qp(priv); 1510 if (err) { 1511 en_err(priv, "Failed getting eth qp\n"); 1512 goto cq_err; 1513 } 1514 mdev->mac_removed[priv->port] = 0; 1515 1516 err = mlx4_en_config_rss_steer(priv); 1517 if (err) { 1518 en_err(priv, "Failed configuring rss steering\n"); 1519 goto mac_err; 1520 } 1521 1522 err = mlx4_en_create_drop_qp(priv); 1523 if (err) 1524 goto rss_err; 1525 1526 /* Configure tx cq's and rings */ 1527 for (i = 0; i < priv->tx_ring_num; i++) { 1528 /* Configure cq */ 1529 cq = &priv->tx_cq[i]; 1530 err = mlx4_en_activate_cq(priv, cq, i); 1531 if (err) { 1532 en_err(priv, "Failed allocating Tx CQ\n"); 1533 goto tx_err; 1534 } 1535 err = mlx4_en_set_cq_moder(priv, cq); 1536 if (err) { 1537 en_err(priv, "Failed setting cq moderation parameters"); 1538 mlx4_en_deactivate_cq(priv, cq); 1539 goto tx_err; 1540 } 1541 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i); 1542 cq->buf->wqe_index = cpu_to_be16(0xffff); 1543 1544 /* Configure ring */ 1545 tx_ring = &priv->tx_ring[i]; 1546 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, 1547 i / priv->num_tx_rings_p_up); 1548 if (err) { 1549 en_err(priv, "Failed allocating Tx ring\n"); 1550 mlx4_en_deactivate_cq(priv, cq); 1551 goto tx_err; 1552 } 1553 tx_ring->tx_queue = netdev_get_tx_queue(dev, i); 1554 1555 /* Arm CQ for TX completions */ 1556 mlx4_en_arm_cq(priv, cq); 1557 1558 /* Set initial ownership of all Tx TXBBs to SW (1) */ 1559 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) 1560 *((u32 *) (tx_ring->buf + j)) = 0xffffffff; 1561 ++tx_index; 1562 } 1563 1564 /* Configure port */ 1565 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 1566 priv->rx_skb_size + ETH_FCS_LEN, 1567 priv->prof->tx_pause, 1568 priv->prof->tx_ppp, 1569 priv->prof->rx_pause, 1570 priv->prof->rx_ppp); 1571 if (err) { 1572 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", 1573 priv->port, err); 1574 goto tx_err; 1575 } 1576 /* Set default qp number */ 1577 err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); 1578 if (err) { 1579 en_err(priv, "Failed setting default qp numbers\n"); 1580 goto tx_err; 1581 } 1582 1583 /* Init port */ 1584 en_dbg(HW, priv, "Initializing port\n"); 1585 err = mlx4_INIT_PORT(mdev->dev, priv->port); 1586 if (err) { 1587 en_err(priv, "Failed Initializing port\n"); 1588 goto tx_err; 1589 } 1590 1591 /* Attach rx QP to bradcast address */ 1592 memset(&mc_list[10], 0xff, ETH_ALEN); 1593 mc_list[5] = priv->port; /* needed for B0 steering support */ 1594 if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1595 priv->port, 0, MLX4_PROT_ETH, 1596 &priv->broadcast_id)) 1597 mlx4_warn(mdev, "Failed Attaching Broadcast\n"); 1598 1599 /* Must redo promiscuous mode setup. */ 1600 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); 1601 1602 /* Schedule multicast task to populate multicast list */ 1603 queue_work(mdev->workqueue, &priv->rx_mode_task); 1604 1605 mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap); 1606 1607 priv->port_up = true; 1608 netif_tx_start_all_queues(dev); 1609 netif_device_attach(dev); 1610 1611 return 0; 1612 1613 tx_err: 1614 while (tx_index--) { 1615 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]); 1616 mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]); 1617 } 1618 mlx4_en_destroy_drop_qp(priv); 1619 rss_err: 1620 mlx4_en_release_rss_steer(priv); 1621 mac_err: 1622 mlx4_en_put_qp(priv); 1623 cq_err: 1624 while (rx_index--) 1625 mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]); 1626 for (i = 0; i < priv->rx_ring_num; i++) 1627 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]); 1628 1629 return err; /* need to close devices */ 1630 } 1631 1632 1633 void mlx4_en_stop_port(struct net_device *dev, int detach) 1634 { 1635 struct mlx4_en_priv *priv = netdev_priv(dev); 1636 struct mlx4_en_dev *mdev = priv->mdev; 1637 struct mlx4_en_mc_list *mclist, *tmp; 1638 struct ethtool_flow_id *flow, *tmp_flow; 1639 int i; 1640 u8 mc_list[16] = {0}; 1641 1642 if (!priv->port_up) { 1643 en_dbg(DRV, priv, "stop port called while port already down\n"); 1644 return; 1645 } 1646 1647 /* close port*/ 1648 mlx4_CLOSE_PORT(mdev->dev, priv->port); 1649 1650 /* Synchronize with tx routine */ 1651 netif_tx_lock_bh(dev); 1652 if (detach) 1653 netif_device_detach(dev); 1654 netif_tx_stop_all_queues(dev); 1655 netif_tx_unlock_bh(dev); 1656 1657 netif_tx_disable(dev); 1658 1659 /* Set port as not active */ 1660 priv->port_up = false; 1661 1662 /* Promsicuous mode */ 1663 if (mdev->dev->caps.steering_mode == 1664 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1665 priv->flags &= ~(MLX4_EN_FLAG_PROMISC | 1666 MLX4_EN_FLAG_MC_PROMISC); 1667 mlx4_flow_steer_promisc_remove(mdev->dev, 1668 priv->port, 1669 MLX4_FS_ALL_DEFAULT); 1670 mlx4_flow_steer_promisc_remove(mdev->dev, 1671 priv->port, 1672 MLX4_FS_MC_DEFAULT); 1673 } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { 1674 priv->flags &= ~MLX4_EN_FLAG_PROMISC; 1675 1676 /* Disable promiscouos mode */ 1677 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, 1678 priv->port); 1679 1680 /* Disable Multicast promisc */ 1681 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { 1682 mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, 1683 priv->port); 1684 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; 1685 } 1686 } 1687 1688 /* Detach All multicasts */ 1689 memset(&mc_list[10], 0xff, ETH_ALEN); 1690 mc_list[5] = priv->port; /* needed for B0 steering support */ 1691 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, 1692 MLX4_PROT_ETH, priv->broadcast_id); 1693 list_for_each_entry(mclist, &priv->curr_list, list) { 1694 memcpy(&mc_list[10], mclist->addr, ETH_ALEN); 1695 mc_list[5] = priv->port; 1696 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, 1697 mc_list, MLX4_PROT_ETH, mclist->reg_id); 1698 } 1699 mlx4_en_clear_list(dev); 1700 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { 1701 list_del(&mclist->list); 1702 kfree(mclist); 1703 } 1704 1705 /* Flush multicast filter */ 1706 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); 1707 1708 /* Remove flow steering rules for the port*/ 1709 if (mdev->dev->caps.steering_mode == 1710 MLX4_STEERING_MODE_DEVICE_MANAGED) { 1711 ASSERT_RTNL(); 1712 list_for_each_entry_safe(flow, tmp_flow, 1713 &priv->ethtool_list, list) { 1714 mlx4_flow_detach(mdev->dev, flow->id); 1715 list_del(&flow->list); 1716 } 1717 } 1718 1719 mlx4_en_destroy_drop_qp(priv); 1720 1721 /* Free TX Rings */ 1722 for (i = 0; i < priv->tx_ring_num; i++) { 1723 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]); 1724 mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]); 1725 } 1726 msleep(10); 1727 1728 for (i = 0; i < priv->tx_ring_num; i++) 1729 mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]); 1730 1731 /* Free RSS qps */ 1732 mlx4_en_release_rss_steer(priv); 1733 1734 /* Unregister Mac address for the port */ 1735 mlx4_en_put_qp(priv); 1736 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAGS2_REASSIGN_MAC_EN)) 1737 mdev->mac_removed[priv->port] = 1; 1738 1739 /* Free RX Rings */ 1740 for (i = 0; i < priv->rx_ring_num; i++) { 1741 struct mlx4_en_cq *cq = &priv->rx_cq[i]; 1742 1743 local_bh_disable(); 1744 while (!mlx4_en_cq_lock_napi(cq)) { 1745 pr_info("CQ %d locked\n", i); 1746 mdelay(1); 1747 } 1748 local_bh_enable(); 1749 1750 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state)) 1751 msleep(1); 1752 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]); 1753 mlx4_en_deactivate_cq(priv, cq); 1754 } 1755 } 1756 1757 static void mlx4_en_restart(struct work_struct *work) 1758 { 1759 struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, 1760 watchdog_task); 1761 struct mlx4_en_dev *mdev = priv->mdev; 1762 struct net_device *dev = priv->dev; 1763 1764 en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); 1765 1766 mutex_lock(&mdev->state_lock); 1767 if (priv->port_up) { 1768 mlx4_en_stop_port(dev, 1); 1769 if (mlx4_en_start_port(dev)) 1770 en_err(priv, "Failed restarting port %d\n", priv->port); 1771 } 1772 mutex_unlock(&mdev->state_lock); 1773 } 1774 1775 static void mlx4_en_clear_stats(struct net_device *dev) 1776 { 1777 struct mlx4_en_priv *priv = netdev_priv(dev); 1778 struct mlx4_en_dev *mdev = priv->mdev; 1779 int i; 1780 1781 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) 1782 en_dbg(HW, priv, "Failed dumping statistics\n"); 1783 1784 memset(&priv->stats, 0, sizeof(priv->stats)); 1785 memset(&priv->pstats, 0, sizeof(priv->pstats)); 1786 memset(&priv->pkstats, 0, sizeof(priv->pkstats)); 1787 memset(&priv->port_stats, 0, sizeof(priv->port_stats)); 1788 1789 for (i = 0; i < priv->tx_ring_num; i++) { 1790 priv->tx_ring[i].bytes = 0; 1791 priv->tx_ring[i].packets = 0; 1792 priv->tx_ring[i].tx_csum = 0; 1793 } 1794 for (i = 0; i < priv->rx_ring_num; i++) { 1795 priv->rx_ring[i].bytes = 0; 1796 priv->rx_ring[i].packets = 0; 1797 priv->rx_ring[i].csum_ok = 0; 1798 priv->rx_ring[i].csum_none = 0; 1799 } 1800 } 1801 1802 static int mlx4_en_open(struct net_device *dev) 1803 { 1804 struct mlx4_en_priv *priv = netdev_priv(dev); 1805 struct mlx4_en_dev *mdev = priv->mdev; 1806 int err = 0; 1807 1808 mutex_lock(&mdev->state_lock); 1809 1810 if (!mdev->device_up) { 1811 en_err(priv, "Cannot open - device down/disabled\n"); 1812 err = -EBUSY; 1813 goto out; 1814 } 1815 1816 /* Reset HW statistics and SW counters */ 1817 mlx4_en_clear_stats(dev); 1818 1819 err = mlx4_en_start_port(dev); 1820 if (err) 1821 en_err(priv, "Failed starting port:%d\n", priv->port); 1822 1823 out: 1824 mutex_unlock(&mdev->state_lock); 1825 return err; 1826 } 1827 1828 1829 static int mlx4_en_close(struct net_device *dev) 1830 { 1831 struct mlx4_en_priv *priv = netdev_priv(dev); 1832 struct mlx4_en_dev *mdev = priv->mdev; 1833 1834 en_dbg(IFDOWN, priv, "Close port called\n"); 1835 1836 mutex_lock(&mdev->state_lock); 1837 1838 mlx4_en_stop_port(dev, 0); 1839 netif_carrier_off(dev); 1840 1841 mutex_unlock(&mdev->state_lock); 1842 return 0; 1843 } 1844 1845 void mlx4_en_free_resources(struct mlx4_en_priv *priv) 1846 { 1847 int i; 1848 1849 #ifdef CONFIG_RFS_ACCEL 1850 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap); 1851 priv->dev->rx_cpu_rmap = NULL; 1852 #endif 1853 1854 for (i = 0; i < priv->tx_ring_num; i++) { 1855 if (priv->tx_ring[i].tx_info) 1856 mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); 1857 if (priv->tx_cq[i].buf) 1858 mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); 1859 } 1860 1861 for (i = 0; i < priv->rx_ring_num; i++) { 1862 if (priv->rx_ring[i].rx_info) 1863 mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], 1864 priv->prof->rx_ring_size, priv->stride); 1865 if (priv->rx_cq[i].buf) 1866 mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); 1867 } 1868 1869 if (priv->base_tx_qpn) { 1870 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num); 1871 priv->base_tx_qpn = 0; 1872 } 1873 } 1874 1875 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) 1876 { 1877 struct mlx4_en_port_profile *prof = priv->prof; 1878 int i; 1879 int err; 1880 1881 err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn); 1882 if (err) { 1883 en_err(priv, "failed reserving range for TX rings\n"); 1884 return err; 1885 } 1886 1887 /* Create tx Rings */ 1888 for (i = 0; i < priv->tx_ring_num; i++) { 1889 if (mlx4_en_create_cq(priv, &priv->tx_cq[i], 1890 prof->tx_ring_size, i, TX)) 1891 goto err; 1892 1893 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], priv->base_tx_qpn + i, 1894 prof->tx_ring_size, TXBB_SIZE)) 1895 goto err; 1896 } 1897 1898 /* Create rx Rings */ 1899 for (i = 0; i < priv->rx_ring_num; i++) { 1900 if (mlx4_en_create_cq(priv, &priv->rx_cq[i], 1901 prof->rx_ring_size, i, RX)) 1902 goto err; 1903 1904 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], 1905 prof->rx_ring_size, priv->stride)) 1906 goto err; 1907 } 1908 1909 #ifdef CONFIG_RFS_ACCEL 1910 if (priv->mdev->dev->caps.comp_pool) { 1911 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool); 1912 if (!priv->dev->rx_cpu_rmap) 1913 goto err; 1914 } 1915 #endif 1916 1917 return 0; 1918 1919 err: 1920 en_err(priv, "Failed to allocate NIC resources\n"); 1921 return -ENOMEM; 1922 } 1923 1924 1925 void mlx4_en_destroy_netdev(struct net_device *dev) 1926 { 1927 struct mlx4_en_priv *priv = netdev_priv(dev); 1928 struct mlx4_en_dev *mdev = priv->mdev; 1929 1930 en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); 1931 1932 /* Unregister device - this will close the port if it was up */ 1933 if (priv->registered) 1934 unregister_netdev(dev); 1935 1936 if (priv->allocated) 1937 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); 1938 1939 cancel_delayed_work(&priv->stats_task); 1940 cancel_delayed_work(&priv->service_task); 1941 /* flush any pending task for this netdev */ 1942 flush_workqueue(mdev->workqueue); 1943 1944 /* Detach the netdev so tasks would not attempt to access it */ 1945 mutex_lock(&mdev->state_lock); 1946 mdev->pndev[priv->port] = NULL; 1947 mutex_unlock(&mdev->state_lock); 1948 1949 mlx4_en_free_resources(priv); 1950 1951 kfree(priv->tx_ring); 1952 kfree(priv->tx_cq); 1953 1954 free_netdev(dev); 1955 } 1956 1957 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) 1958 { 1959 struct mlx4_en_priv *priv = netdev_priv(dev); 1960 struct mlx4_en_dev *mdev = priv->mdev; 1961 int err = 0; 1962 1963 en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", 1964 dev->mtu, new_mtu); 1965 1966 if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { 1967 en_err(priv, "Bad MTU size:%d.\n", new_mtu); 1968 return -EPERM; 1969 } 1970 dev->mtu = new_mtu; 1971 1972 if (netif_running(dev)) { 1973 mutex_lock(&mdev->state_lock); 1974 if (!mdev->device_up) { 1975 /* NIC is probably restarting - let watchdog task reset 1976 * the port */ 1977 en_dbg(DRV, priv, "Change MTU called with card down!?\n"); 1978 } else { 1979 mlx4_en_stop_port(dev, 1); 1980 err = mlx4_en_start_port(dev); 1981 if (err) { 1982 en_err(priv, "Failed restarting port:%d\n", 1983 priv->port); 1984 queue_work(mdev->workqueue, &priv->watchdog_task); 1985 } 1986 } 1987 mutex_unlock(&mdev->state_lock); 1988 } 1989 return 0; 1990 } 1991 1992 static int mlx4_en_hwtstamp_ioctl(struct net_device *dev, struct ifreq *ifr) 1993 { 1994 struct mlx4_en_priv *priv = netdev_priv(dev); 1995 struct mlx4_en_dev *mdev = priv->mdev; 1996 struct hwtstamp_config config; 1997 1998 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 1999 return -EFAULT; 2000 2001 /* reserved for future extensions */ 2002 if (config.flags) 2003 return -EINVAL; 2004 2005 /* device doesn't support time stamping */ 2006 if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) 2007 return -EINVAL; 2008 2009 /* TX HW timestamp */ 2010 switch (config.tx_type) { 2011 case HWTSTAMP_TX_OFF: 2012 case HWTSTAMP_TX_ON: 2013 break; 2014 default: 2015 return -ERANGE; 2016 } 2017 2018 /* RX HW timestamp */ 2019 switch (config.rx_filter) { 2020 case HWTSTAMP_FILTER_NONE: 2021 break; 2022 case HWTSTAMP_FILTER_ALL: 2023 case HWTSTAMP_FILTER_SOME: 2024 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2025 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2026 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2027 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2028 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2029 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2030 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2031 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2032 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2033 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2034 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2035 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2036 config.rx_filter = HWTSTAMP_FILTER_ALL; 2037 break; 2038 default: 2039 return -ERANGE; 2040 } 2041 2042 if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) { 2043 config.tx_type = HWTSTAMP_TX_OFF; 2044 config.rx_filter = HWTSTAMP_FILTER_NONE; 2045 } 2046 2047 return copy_to_user(ifr->ifr_data, &config, 2048 sizeof(config)) ? -EFAULT : 0; 2049 } 2050 2051 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2052 { 2053 switch (cmd) { 2054 case SIOCSHWTSTAMP: 2055 return mlx4_en_hwtstamp_ioctl(dev, ifr); 2056 default: 2057 return -EOPNOTSUPP; 2058 } 2059 } 2060 2061 static int mlx4_en_set_features(struct net_device *netdev, 2062 netdev_features_t features) 2063 { 2064 struct mlx4_en_priv *priv = netdev_priv(netdev); 2065 2066 if (features & NETIF_F_LOOPBACK) 2067 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK); 2068 else 2069 priv->ctrl_flags &= 2070 cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK); 2071 2072 mlx4_en_update_loopback_state(netdev, features); 2073 2074 return 0; 2075 2076 } 2077 2078 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) 2079 { 2080 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2081 struct mlx4_en_dev *mdev = en_priv->mdev; 2082 u64 mac_u64 = mlx4_en_mac_to_u64(mac); 2083 2084 if (!is_valid_ether_addr(mac)) 2085 return -EINVAL; 2086 2087 return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); 2088 } 2089 2090 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) 2091 { 2092 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2093 struct mlx4_en_dev *mdev = en_priv->mdev; 2094 2095 return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos); 2096 } 2097 2098 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) 2099 { 2100 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2101 struct mlx4_en_dev *mdev = en_priv->mdev; 2102 2103 return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); 2104 } 2105 2106 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) 2107 { 2108 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2109 struct mlx4_en_dev *mdev = en_priv->mdev; 2110 2111 return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); 2112 } 2113 2114 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) 2115 { 2116 struct mlx4_en_priv *en_priv = netdev_priv(dev); 2117 struct mlx4_en_dev *mdev = en_priv->mdev; 2118 2119 return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); 2120 } 2121 static const struct net_device_ops mlx4_netdev_ops = { 2122 .ndo_open = mlx4_en_open, 2123 .ndo_stop = mlx4_en_close, 2124 .ndo_start_xmit = mlx4_en_xmit, 2125 .ndo_select_queue = mlx4_en_select_queue, 2126 .ndo_get_stats = mlx4_en_get_stats, 2127 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2128 .ndo_set_mac_address = mlx4_en_set_mac, 2129 .ndo_validate_addr = eth_validate_addr, 2130 .ndo_change_mtu = mlx4_en_change_mtu, 2131 .ndo_do_ioctl = mlx4_en_ioctl, 2132 .ndo_tx_timeout = mlx4_en_tx_timeout, 2133 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2134 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2135 #ifdef CONFIG_NET_POLL_CONTROLLER 2136 .ndo_poll_controller = mlx4_en_netpoll, 2137 #endif 2138 .ndo_set_features = mlx4_en_set_features, 2139 .ndo_setup_tc = mlx4_en_setup_tc, 2140 #ifdef CONFIG_RFS_ACCEL 2141 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2142 #endif 2143 #ifdef CONFIG_NET_RX_BUSY_POLL 2144 .ndo_busy_poll = mlx4_en_low_latency_recv, 2145 #endif 2146 }; 2147 2148 static const struct net_device_ops mlx4_netdev_ops_master = { 2149 .ndo_open = mlx4_en_open, 2150 .ndo_stop = mlx4_en_close, 2151 .ndo_start_xmit = mlx4_en_xmit, 2152 .ndo_select_queue = mlx4_en_select_queue, 2153 .ndo_get_stats = mlx4_en_get_stats, 2154 .ndo_set_rx_mode = mlx4_en_set_rx_mode, 2155 .ndo_set_mac_address = mlx4_en_set_mac, 2156 .ndo_validate_addr = eth_validate_addr, 2157 .ndo_change_mtu = mlx4_en_change_mtu, 2158 .ndo_tx_timeout = mlx4_en_tx_timeout, 2159 .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, 2160 .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, 2161 .ndo_set_vf_mac = mlx4_en_set_vf_mac, 2162 .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, 2163 .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, 2164 .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, 2165 .ndo_get_vf_config = mlx4_en_get_vf_config, 2166 #ifdef CONFIG_NET_POLL_CONTROLLER 2167 .ndo_poll_controller = mlx4_en_netpoll, 2168 #endif 2169 .ndo_set_features = mlx4_en_set_features, 2170 .ndo_setup_tc = mlx4_en_setup_tc, 2171 #ifdef CONFIG_RFS_ACCEL 2172 .ndo_rx_flow_steer = mlx4_en_filter_rfs, 2173 #endif 2174 }; 2175 2176 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 2177 struct mlx4_en_port_profile *prof) 2178 { 2179 struct net_device *dev; 2180 struct mlx4_en_priv *priv; 2181 int i; 2182 int err; 2183 u64 mac_u64; 2184 2185 dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), 2186 MAX_TX_RINGS, MAX_RX_RINGS); 2187 if (dev == NULL) 2188 return -ENOMEM; 2189 2190 netif_set_real_num_tx_queues(dev, prof->tx_ring_num); 2191 netif_set_real_num_rx_queues(dev, prof->rx_ring_num); 2192 2193 SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev); 2194 dev->dev_id = port - 1; 2195 2196 /* 2197 * Initialize driver private data 2198 */ 2199 2200 priv = netdev_priv(dev); 2201 memset(priv, 0, sizeof(struct mlx4_en_priv)); 2202 priv->dev = dev; 2203 priv->mdev = mdev; 2204 priv->ddev = &mdev->pdev->dev; 2205 priv->prof = prof; 2206 priv->port = port; 2207 priv->port_up = false; 2208 priv->flags = prof->flags; 2209 priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | 2210 MLX4_WQE_CTRL_SOLICITED); 2211 priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; 2212 priv->tx_ring_num = prof->tx_ring_num; 2213 2214 priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring) * MAX_TX_RINGS, 2215 GFP_KERNEL); 2216 if (!priv->tx_ring) { 2217 err = -ENOMEM; 2218 goto out; 2219 } 2220 priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq) * MAX_TX_RINGS, 2221 GFP_KERNEL); 2222 if (!priv->tx_cq) { 2223 err = -ENOMEM; 2224 goto out; 2225 } 2226 priv->rx_ring_num = prof->rx_ring_num; 2227 priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; 2228 priv->mac_index = -1; 2229 priv->msg_enable = MLX4_EN_MSG_LEVEL; 2230 spin_lock_init(&priv->stats_lock); 2231 INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); 2232 INIT_WORK(&priv->watchdog_task, mlx4_en_restart); 2233 INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); 2234 INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); 2235 INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); 2236 #ifdef CONFIG_MLX4_EN_DCB 2237 if (!mlx4_is_slave(priv->mdev->dev)) { 2238 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) { 2239 dev->dcbnl_ops = &mlx4_en_dcbnl_ops; 2240 } else { 2241 en_info(priv, "enabling only PFC DCB ops\n"); 2242 dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; 2243 } 2244 } 2245 #endif 2246 2247 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) 2248 INIT_HLIST_HEAD(&priv->mac_hash[i]); 2249 2250 /* Query for default mac and max mtu */ 2251 priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; 2252 2253 /* Set default MAC */ 2254 dev->addr_len = ETH_ALEN; 2255 mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); 2256 if (!is_valid_ether_addr(dev->dev_addr)) { 2257 if (mlx4_is_slave(priv->mdev->dev)) { 2258 eth_hw_addr_random(dev); 2259 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); 2260 mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr); 2261 mdev->dev->caps.def_mac[priv->port] = mac_u64; 2262 } else { 2263 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", 2264 priv->port, dev->dev_addr); 2265 err = -EINVAL; 2266 goto out; 2267 } 2268 } 2269 2270 memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac)); 2271 2272 priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + 2273 DS_SIZE * MLX4_EN_MAX_RX_FRAGS); 2274 err = mlx4_en_alloc_resources(priv); 2275 if (err) 2276 goto out; 2277 2278 #ifdef CONFIG_RFS_ACCEL 2279 INIT_LIST_HEAD(&priv->filters); 2280 spin_lock_init(&priv->filters_lock); 2281 #endif 2282 2283 /* Initialize time stamping config */ 2284 priv->hwtstamp_config.flags = 0; 2285 priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; 2286 priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 2287 2288 /* Allocate page for receive rings */ 2289 err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, 2290 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE); 2291 if (err) { 2292 en_err(priv, "Failed to allocate page for rx qps\n"); 2293 goto out; 2294 } 2295 priv->allocated = 1; 2296 2297 /* 2298 * Initialize netdev entry points 2299 */ 2300 if (mlx4_is_master(priv->mdev->dev)) 2301 dev->netdev_ops = &mlx4_netdev_ops_master; 2302 else 2303 dev->netdev_ops = &mlx4_netdev_ops; 2304 dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; 2305 netif_set_real_num_tx_queues(dev, priv->tx_ring_num); 2306 netif_set_real_num_rx_queues(dev, priv->rx_ring_num); 2307 2308 SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops); 2309 2310 /* 2311 * Set driver features 2312 */ 2313 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 2314 if (mdev->LSO_support) 2315 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; 2316 2317 dev->vlan_features = dev->hw_features; 2318 2319 dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; 2320 dev->features = dev->hw_features | NETIF_F_HIGHDMA | 2321 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | 2322 NETIF_F_HW_VLAN_CTAG_FILTER; 2323 dev->hw_features |= NETIF_F_LOOPBACK; 2324 2325 if (mdev->dev->caps.steering_mode == 2326 MLX4_STEERING_MODE_DEVICE_MANAGED) 2327 dev->hw_features |= NETIF_F_NTUPLE; 2328 2329 if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) 2330 dev->priv_flags |= IFF_UNICAST_FLT; 2331 2332 mdev->pndev[port] = dev; 2333 2334 netif_carrier_off(dev); 2335 mlx4_en_set_default_moderation(priv); 2336 2337 err = register_netdev(dev); 2338 if (err) { 2339 en_err(priv, "Netdev registration failed for port %d\n", port); 2340 goto out; 2341 } 2342 priv->registered = 1; 2343 2344 en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); 2345 en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); 2346 2347 mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 2348 2349 /* Configure port */ 2350 mlx4_en_calc_rx_buf(dev); 2351 err = mlx4_SET_PORT_general(mdev->dev, priv->port, 2352 priv->rx_skb_size + ETH_FCS_LEN, 2353 prof->tx_pause, prof->tx_ppp, 2354 prof->rx_pause, prof->rx_ppp); 2355 if (err) { 2356 en_err(priv, "Failed setting port general configurations " 2357 "for port %d, with error %d\n", priv->port, err); 2358 goto out; 2359 } 2360 2361 /* Init port */ 2362 en_warn(priv, "Initializing port\n"); 2363 err = mlx4_INIT_PORT(mdev->dev, priv->port); 2364 if (err) { 2365 en_err(priv, "Failed Initializing port\n"); 2366 goto out; 2367 } 2368 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); 2369 2370 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) 2371 queue_delayed_work(mdev->workqueue, &priv->service_task, 2372 SERVICE_TASK_DELAY); 2373 2374 return 0; 2375 2376 out: 2377 mlx4_en_destroy_netdev(dev); 2378 return err; 2379 } 2380 2381