1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2 /* Copyright (C) 2018 Netronome Systems, Inc. */ 3 4 #include "main.h" 5 6 /* LAG group config flags. */ 7 #define NFP_FL_LAG_LAST BIT(1) 8 #define NFP_FL_LAG_FIRST BIT(2) 9 #define NFP_FL_LAG_DATA BIT(3) 10 #define NFP_FL_LAG_XON BIT(4) 11 #define NFP_FL_LAG_SYNC BIT(5) 12 #define NFP_FL_LAG_SWITCH BIT(6) 13 #define NFP_FL_LAG_RESET BIT(7) 14 15 /* LAG port state flags. */ 16 #define NFP_PORT_LAG_LINK_UP BIT(0) 17 #define NFP_PORT_LAG_TX_ENABLED BIT(1) 18 #define NFP_PORT_LAG_CHANGED BIT(2) 19 20 enum nfp_fl_lag_batch { 21 NFP_FL_LAG_BATCH_FIRST, 22 NFP_FL_LAG_BATCH_MEMBER, 23 NFP_FL_LAG_BATCH_FINISHED 24 }; 25 26 /** 27 * struct nfp_flower_cmsg_lag_config - control message payload for LAG config 28 * @ctrl_flags: Configuration flags 29 * @reserved: Reserved for future use 30 * @ttl: Time to live of packet - host always sets to 0xff 31 * @pkt_number: Config message packet number - increment for each message 32 * @batch_ver: Batch version of messages - increment for each batch of messages 33 * @group_id: Group ID applicable 34 * @group_inst: Group instance number - increment when group is reused 35 * @members: Array of 32-bit words listing all active group members 36 */ 37 struct nfp_flower_cmsg_lag_config { 38 u8 ctrl_flags; 39 u8 reserved[2]; 40 u8 ttl; 41 __be32 pkt_number; 42 __be32 batch_ver; 43 __be32 group_id; 44 __be32 group_inst; 45 __be32 members[]; 46 }; 47 48 /** 49 * struct nfp_fl_lag_group - list entry for each LAG group 50 * @group_id: Assigned group ID for host/kernel sync 51 * @group_inst: Group instance in case of ID reuse 52 * @list: List entry 53 * @master_ndev: Group master Netdev 54 * @dirty: Marked if the group needs synced to HW 55 * @offloaded: Marked if the group is currently offloaded to NIC 56 * @to_remove: Marked if the group should be removed from NIC 57 * @to_destroy: Marked if the group should be removed from driver 58 * @slave_cnt: Number of slaves in group 59 */ 60 struct nfp_fl_lag_group { 61 unsigned int group_id; 62 u8 group_inst; 63 struct list_head list; 64 struct net_device *master_ndev; 65 bool dirty; 66 bool offloaded; 67 bool to_remove; 68 bool to_destroy; 69 unsigned int slave_cnt; 70 }; 71 72 #define NFP_FL_LAG_PKT_NUMBER_MASK GENMASK(30, 0) 73 #define NFP_FL_LAG_VERSION_MASK GENMASK(22, 0) 74 #define NFP_FL_LAG_HOST_TTL 0xff 75 76 /* Use this ID with zero members to ack a batch config */ 77 #define NFP_FL_LAG_SYNC_ID 0 78 #define NFP_FL_LAG_GROUP_MIN 1 /* ID 0 reserved */ 79 #define NFP_FL_LAG_GROUP_MAX 32 /* IDs 1 to 31 are valid */ 80 81 /* wait for more config */ 82 #define NFP_FL_LAG_DELAY (msecs_to_jiffies(2)) 83 84 #define NFP_FL_LAG_RETRANS_LIMIT 100 /* max retrans cmsgs to store */ 85 86 static unsigned int nfp_fl_get_next_pkt_number(struct nfp_fl_lag *lag) 87 { 88 lag->pkt_num++; 89 lag->pkt_num &= NFP_FL_LAG_PKT_NUMBER_MASK; 90 91 return lag->pkt_num; 92 } 93 94 static void nfp_fl_increment_version(struct nfp_fl_lag *lag) 95 { 96 /* LSB is not considered by firmware so add 2 for each increment. */ 97 lag->batch_ver += 2; 98 lag->batch_ver &= NFP_FL_LAG_VERSION_MASK; 99 100 /* Zero is reserved by firmware. */ 101 if (!lag->batch_ver) 102 lag->batch_ver += 2; 103 } 104 105 static struct nfp_fl_lag_group * 106 nfp_fl_lag_group_create(struct nfp_fl_lag *lag, struct net_device *master) 107 { 108 struct nfp_fl_lag_group *group; 109 struct nfp_flower_priv *priv; 110 int id; 111 112 priv = container_of(lag, struct nfp_flower_priv, nfp_lag); 113 114 id = ida_simple_get(&lag->ida_handle, NFP_FL_LAG_GROUP_MIN, 115 NFP_FL_LAG_GROUP_MAX, GFP_KERNEL); 116 if (id < 0) { 117 nfp_flower_cmsg_warn(priv->app, 118 "No more bonding groups available\n"); 119 return ERR_PTR(id); 120 } 121 122 group = kmalloc(sizeof(*group), GFP_KERNEL); 123 if (!group) { 124 ida_simple_remove(&lag->ida_handle, id); 125 return ERR_PTR(-ENOMEM); 126 } 127 128 group->group_id = id; 129 group->master_ndev = master; 130 group->dirty = true; 131 group->offloaded = false; 132 group->to_remove = false; 133 group->to_destroy = false; 134 group->slave_cnt = 0; 135 group->group_inst = ++lag->global_inst; 136 list_add_tail(&group->list, &lag->group_list); 137 138 return group; 139 } 140 141 static struct nfp_fl_lag_group * 142 nfp_fl_lag_find_group_for_master_with_lag(struct nfp_fl_lag *lag, 143 struct net_device *master) 144 { 145 struct nfp_fl_lag_group *entry; 146 147 if (!master) 148 return NULL; 149 150 list_for_each_entry(entry, &lag->group_list, list) 151 if (entry->master_ndev == master) 152 return entry; 153 154 return NULL; 155 } 156 157 int nfp_flower_lag_populate_pre_action(struct nfp_app *app, 158 struct net_device *master, 159 struct nfp_fl_pre_lag *pre_act, 160 struct netlink_ext_ack *extack) 161 { 162 struct nfp_flower_priv *priv = app->priv; 163 struct nfp_fl_lag_group *group = NULL; 164 __be32 temp_vers; 165 166 mutex_lock(&priv->nfp_lag.lock); 167 group = nfp_fl_lag_find_group_for_master_with_lag(&priv->nfp_lag, 168 master); 169 if (!group) { 170 mutex_unlock(&priv->nfp_lag.lock); 171 NL_SET_ERR_MSG_MOD(extack, "invalid entry: group does not exist for LAG action"); 172 return -ENOENT; 173 } 174 175 pre_act->group_id = cpu_to_be16(group->group_id); 176 temp_vers = cpu_to_be32(priv->nfp_lag.batch_ver << 177 NFP_FL_PRE_LAG_VER_OFF); 178 memcpy(pre_act->lag_version, &temp_vers, 3); 179 pre_act->instance = group->group_inst; 180 mutex_unlock(&priv->nfp_lag.lock); 181 182 return 0; 183 } 184 185 int nfp_flower_lag_get_output_id(struct nfp_app *app, struct net_device *master) 186 { 187 struct nfp_flower_priv *priv = app->priv; 188 struct nfp_fl_lag_group *group = NULL; 189 int group_id = -ENOENT; 190 191 mutex_lock(&priv->nfp_lag.lock); 192 group = nfp_fl_lag_find_group_for_master_with_lag(&priv->nfp_lag, 193 master); 194 if (group) 195 group_id = group->group_id; 196 mutex_unlock(&priv->nfp_lag.lock); 197 198 return group_id; 199 } 200 201 static int 202 nfp_fl_lag_config_group(struct nfp_fl_lag *lag, struct nfp_fl_lag_group *group, 203 struct net_device **active_members, 204 unsigned int member_cnt, enum nfp_fl_lag_batch *batch) 205 { 206 struct nfp_flower_cmsg_lag_config *cmsg_payload; 207 struct nfp_flower_priv *priv; 208 unsigned long int flags; 209 unsigned int size, i; 210 struct sk_buff *skb; 211 212 priv = container_of(lag, struct nfp_flower_priv, nfp_lag); 213 size = sizeof(*cmsg_payload) + sizeof(__be32) * member_cnt; 214 skb = nfp_flower_cmsg_alloc(priv->app, size, 215 NFP_FLOWER_CMSG_TYPE_LAG_CONFIG, 216 GFP_KERNEL); 217 if (!skb) 218 return -ENOMEM; 219 220 cmsg_payload = nfp_flower_cmsg_get_data(skb); 221 flags = 0; 222 223 /* Increment batch version for each new batch of config messages. */ 224 if (*batch == NFP_FL_LAG_BATCH_FIRST) { 225 flags |= NFP_FL_LAG_FIRST; 226 nfp_fl_increment_version(lag); 227 *batch = NFP_FL_LAG_BATCH_MEMBER; 228 } 229 230 /* If it is a reset msg then it is also the end of the batch. */ 231 if (lag->rst_cfg) { 232 flags |= NFP_FL_LAG_RESET; 233 *batch = NFP_FL_LAG_BATCH_FINISHED; 234 } 235 236 /* To signal the end of a batch, both the switch and last flags are set 237 * and the the reserved SYNC group ID is used. 238 */ 239 if (*batch == NFP_FL_LAG_BATCH_FINISHED) { 240 flags |= NFP_FL_LAG_SWITCH | NFP_FL_LAG_LAST; 241 lag->rst_cfg = false; 242 cmsg_payload->group_id = cpu_to_be32(NFP_FL_LAG_SYNC_ID); 243 cmsg_payload->group_inst = 0; 244 } else { 245 cmsg_payload->group_id = cpu_to_be32(group->group_id); 246 cmsg_payload->group_inst = cpu_to_be32(group->group_inst); 247 } 248 249 cmsg_payload->reserved[0] = 0; 250 cmsg_payload->reserved[1] = 0; 251 cmsg_payload->ttl = NFP_FL_LAG_HOST_TTL; 252 cmsg_payload->ctrl_flags = flags; 253 cmsg_payload->batch_ver = cpu_to_be32(lag->batch_ver); 254 cmsg_payload->pkt_number = cpu_to_be32(nfp_fl_get_next_pkt_number(lag)); 255 256 for (i = 0; i < member_cnt; i++) 257 cmsg_payload->members[i] = 258 cpu_to_be32(nfp_repr_get_port_id(active_members[i])); 259 260 nfp_ctrl_tx(priv->app->ctrl, skb); 261 return 0; 262 } 263 264 static void nfp_fl_lag_do_work(struct work_struct *work) 265 { 266 enum nfp_fl_lag_batch batch = NFP_FL_LAG_BATCH_FIRST; 267 struct nfp_fl_lag_group *entry, *storage; 268 struct delayed_work *delayed_work; 269 struct nfp_flower_priv *priv; 270 struct nfp_fl_lag *lag; 271 int err; 272 273 delayed_work = to_delayed_work(work); 274 lag = container_of(delayed_work, struct nfp_fl_lag, work); 275 priv = container_of(lag, struct nfp_flower_priv, nfp_lag); 276 277 mutex_lock(&lag->lock); 278 list_for_each_entry_safe(entry, storage, &lag->group_list, list) { 279 struct net_device *iter_netdev, **acti_netdevs; 280 struct nfp_flower_repr_priv *repr_priv; 281 int active_count = 0, slaves = 0; 282 struct nfp_repr *repr; 283 unsigned long *flags; 284 285 if (entry->to_remove) { 286 /* Active count of 0 deletes group on hw. */ 287 err = nfp_fl_lag_config_group(lag, entry, NULL, 0, 288 &batch); 289 if (!err) { 290 entry->to_remove = false; 291 entry->offloaded = false; 292 } else { 293 nfp_flower_cmsg_warn(priv->app, 294 "group delete failed\n"); 295 schedule_delayed_work(&lag->work, 296 NFP_FL_LAG_DELAY); 297 continue; 298 } 299 300 if (entry->to_destroy) { 301 ida_simple_remove(&lag->ida_handle, 302 entry->group_id); 303 list_del(&entry->list); 304 kfree(entry); 305 } 306 continue; 307 } 308 309 acti_netdevs = kmalloc_array(entry->slave_cnt, 310 sizeof(*acti_netdevs), GFP_KERNEL); 311 312 /* Include sanity check in the loop. It may be that a bond has 313 * changed between processing the last notification and the 314 * work queue triggering. If the number of slaves has changed 315 * or it now contains netdevs that cannot be offloaded, ignore 316 * the group until pending notifications are processed. 317 */ 318 rcu_read_lock(); 319 for_each_netdev_in_bond_rcu(entry->master_ndev, iter_netdev) { 320 if (!nfp_netdev_is_nfp_repr(iter_netdev)) { 321 slaves = 0; 322 break; 323 } 324 325 repr = netdev_priv(iter_netdev); 326 327 if (repr->app != priv->app) { 328 slaves = 0; 329 break; 330 } 331 332 slaves++; 333 if (slaves > entry->slave_cnt) 334 break; 335 336 /* Check the ports for state changes. */ 337 repr_priv = repr->app_priv; 338 flags = &repr_priv->lag_port_flags; 339 340 if (*flags & NFP_PORT_LAG_CHANGED) { 341 *flags &= ~NFP_PORT_LAG_CHANGED; 342 entry->dirty = true; 343 } 344 345 if ((*flags & NFP_PORT_LAG_TX_ENABLED) && 346 (*flags & NFP_PORT_LAG_LINK_UP)) 347 acti_netdevs[active_count++] = iter_netdev; 348 } 349 rcu_read_unlock(); 350 351 if (slaves != entry->slave_cnt || !entry->dirty) { 352 kfree(acti_netdevs); 353 continue; 354 } 355 356 err = nfp_fl_lag_config_group(lag, entry, acti_netdevs, 357 active_count, &batch); 358 if (!err) { 359 entry->offloaded = true; 360 entry->dirty = false; 361 } else { 362 nfp_flower_cmsg_warn(priv->app, 363 "group offload failed\n"); 364 schedule_delayed_work(&lag->work, NFP_FL_LAG_DELAY); 365 } 366 367 kfree(acti_netdevs); 368 } 369 370 /* End the config batch if at least one packet has been batched. */ 371 if (batch == NFP_FL_LAG_BATCH_MEMBER) { 372 batch = NFP_FL_LAG_BATCH_FINISHED; 373 err = nfp_fl_lag_config_group(lag, NULL, NULL, 0, &batch); 374 if (err) 375 nfp_flower_cmsg_warn(priv->app, 376 "group batch end cmsg failed\n"); 377 } 378 379 mutex_unlock(&lag->lock); 380 } 381 382 static int 383 nfp_fl_lag_put_unprocessed(struct nfp_fl_lag *lag, struct sk_buff *skb) 384 { 385 struct nfp_flower_cmsg_lag_config *cmsg_payload; 386 387 cmsg_payload = nfp_flower_cmsg_get_data(skb); 388 if (be32_to_cpu(cmsg_payload->group_id) >= NFP_FL_LAG_GROUP_MAX) 389 return -EINVAL; 390 391 /* Drop cmsg retrans if storage limit is exceeded to prevent 392 * overloading. If the fw notices that expected messages have not been 393 * received in a given time block, it will request a full resync. 394 */ 395 if (skb_queue_len(&lag->retrans_skbs) >= NFP_FL_LAG_RETRANS_LIMIT) 396 return -ENOSPC; 397 398 __skb_queue_tail(&lag->retrans_skbs, skb); 399 400 return 0; 401 } 402 403 static void nfp_fl_send_unprocessed(struct nfp_fl_lag *lag) 404 { 405 struct nfp_flower_priv *priv; 406 struct sk_buff *skb; 407 408 priv = container_of(lag, struct nfp_flower_priv, nfp_lag); 409 410 while ((skb = __skb_dequeue(&lag->retrans_skbs))) 411 nfp_ctrl_tx(priv->app->ctrl, skb); 412 } 413 414 bool nfp_flower_lag_unprocessed_msg(struct nfp_app *app, struct sk_buff *skb) 415 { 416 struct nfp_flower_cmsg_lag_config *cmsg_payload; 417 struct nfp_flower_priv *priv = app->priv; 418 struct nfp_fl_lag_group *group_entry; 419 unsigned long int flags; 420 bool store_skb = false; 421 int err; 422 423 cmsg_payload = nfp_flower_cmsg_get_data(skb); 424 flags = cmsg_payload->ctrl_flags; 425 426 /* Note the intentional fall through below. If DATA and XON are both 427 * set, the message will stored and sent again with the rest of the 428 * unprocessed messages list. 429 */ 430 431 /* Store */ 432 if (flags & NFP_FL_LAG_DATA) 433 if (!nfp_fl_lag_put_unprocessed(&priv->nfp_lag, skb)) 434 store_skb = true; 435 436 /* Send stored */ 437 if (flags & NFP_FL_LAG_XON) 438 nfp_fl_send_unprocessed(&priv->nfp_lag); 439 440 /* Resend all */ 441 if (flags & NFP_FL_LAG_SYNC) { 442 /* To resend all config: 443 * 1) Clear all unprocessed messages 444 * 2) Mark all groups dirty 445 * 3) Reset NFP group config 446 * 4) Schedule a LAG config update 447 */ 448 449 __skb_queue_purge(&priv->nfp_lag.retrans_skbs); 450 451 mutex_lock(&priv->nfp_lag.lock); 452 list_for_each_entry(group_entry, &priv->nfp_lag.group_list, 453 list) 454 group_entry->dirty = true; 455 456 err = nfp_flower_lag_reset(&priv->nfp_lag); 457 if (err) 458 nfp_flower_cmsg_warn(priv->app, 459 "mem err in group reset msg\n"); 460 mutex_unlock(&priv->nfp_lag.lock); 461 462 schedule_delayed_work(&priv->nfp_lag.work, 0); 463 } 464 465 return store_skb; 466 } 467 468 static void 469 nfp_fl_lag_schedule_group_remove(struct nfp_fl_lag *lag, 470 struct nfp_fl_lag_group *group) 471 { 472 group->to_remove = true; 473 474 schedule_delayed_work(&lag->work, NFP_FL_LAG_DELAY); 475 } 476 477 static void 478 nfp_fl_lag_schedule_group_delete(struct nfp_fl_lag *lag, 479 struct net_device *master) 480 { 481 struct nfp_fl_lag_group *group; 482 struct nfp_flower_priv *priv; 483 484 priv = container_of(lag, struct nfp_flower_priv, nfp_lag); 485 486 if (!netif_is_bond_master(master)) 487 return; 488 489 mutex_lock(&lag->lock); 490 group = nfp_fl_lag_find_group_for_master_with_lag(lag, master); 491 if (!group) { 492 mutex_unlock(&lag->lock); 493 nfp_warn(priv->app->cpp, "untracked bond got unregistered %s\n", 494 netdev_name(master)); 495 return; 496 } 497 498 group->to_remove = true; 499 group->to_destroy = true; 500 mutex_unlock(&lag->lock); 501 502 schedule_delayed_work(&lag->work, NFP_FL_LAG_DELAY); 503 } 504 505 static int 506 nfp_fl_lag_changeupper_event(struct nfp_fl_lag *lag, 507 struct netdev_notifier_changeupper_info *info) 508 { 509 struct net_device *upper = info->upper_dev, *iter_netdev; 510 struct netdev_lag_upper_info *lag_upper_info; 511 struct nfp_fl_lag_group *group; 512 struct nfp_flower_priv *priv; 513 unsigned int slave_count = 0; 514 bool can_offload = true; 515 struct nfp_repr *repr; 516 517 if (!netif_is_lag_master(upper)) 518 return 0; 519 520 priv = container_of(lag, struct nfp_flower_priv, nfp_lag); 521 522 rcu_read_lock(); 523 for_each_netdev_in_bond_rcu(upper, iter_netdev) { 524 if (!nfp_netdev_is_nfp_repr(iter_netdev)) { 525 can_offload = false; 526 break; 527 } 528 repr = netdev_priv(iter_netdev); 529 530 /* Ensure all ports are created by the same app/on same card. */ 531 if (repr->app != priv->app) { 532 can_offload = false; 533 break; 534 } 535 536 slave_count++; 537 } 538 rcu_read_unlock(); 539 540 lag_upper_info = info->upper_info; 541 542 /* Firmware supports active/backup and L3/L4 hash bonds. */ 543 if (lag_upper_info && 544 lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_ACTIVEBACKUP && 545 (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH || 546 (lag_upper_info->hash_type != NETDEV_LAG_HASH_L34 && 547 lag_upper_info->hash_type != NETDEV_LAG_HASH_E34 && 548 lag_upper_info->hash_type != NETDEV_LAG_HASH_UNKNOWN))) { 549 can_offload = false; 550 nfp_flower_cmsg_warn(priv->app, 551 "Unable to offload tx_type %u hash %u\n", 552 lag_upper_info->tx_type, 553 lag_upper_info->hash_type); 554 } 555 556 mutex_lock(&lag->lock); 557 group = nfp_fl_lag_find_group_for_master_with_lag(lag, upper); 558 559 if (slave_count == 0 || !can_offload) { 560 /* Cannot offload the group - remove if previously offloaded. */ 561 if (group && group->offloaded) 562 nfp_fl_lag_schedule_group_remove(lag, group); 563 564 mutex_unlock(&lag->lock); 565 return 0; 566 } 567 568 if (!group) { 569 group = nfp_fl_lag_group_create(lag, upper); 570 if (IS_ERR(group)) { 571 mutex_unlock(&lag->lock); 572 return PTR_ERR(group); 573 } 574 } 575 576 group->dirty = true; 577 group->slave_cnt = slave_count; 578 579 /* Group may have been on queue for removal but is now offfloable. */ 580 group->to_remove = false; 581 mutex_unlock(&lag->lock); 582 583 schedule_delayed_work(&lag->work, NFP_FL_LAG_DELAY); 584 return 0; 585 } 586 587 static void 588 nfp_fl_lag_changels_event(struct nfp_fl_lag *lag, struct net_device *netdev, 589 struct netdev_notifier_changelowerstate_info *info) 590 { 591 struct netdev_lag_lower_state_info *lag_lower_info; 592 struct nfp_flower_repr_priv *repr_priv; 593 struct nfp_flower_priv *priv; 594 struct nfp_repr *repr; 595 unsigned long *flags; 596 597 if (!netif_is_lag_port(netdev) || !nfp_netdev_is_nfp_repr(netdev)) 598 return; 599 600 lag_lower_info = info->lower_state_info; 601 if (!lag_lower_info) 602 return; 603 604 priv = container_of(lag, struct nfp_flower_priv, nfp_lag); 605 repr = netdev_priv(netdev); 606 607 /* Verify that the repr is associated with this app. */ 608 if (repr->app != priv->app) 609 return; 610 611 repr_priv = repr->app_priv; 612 flags = &repr_priv->lag_port_flags; 613 614 mutex_lock(&lag->lock); 615 if (lag_lower_info->link_up) 616 *flags |= NFP_PORT_LAG_LINK_UP; 617 else 618 *flags &= ~NFP_PORT_LAG_LINK_UP; 619 620 if (lag_lower_info->tx_enabled) 621 *flags |= NFP_PORT_LAG_TX_ENABLED; 622 else 623 *flags &= ~NFP_PORT_LAG_TX_ENABLED; 624 625 *flags |= NFP_PORT_LAG_CHANGED; 626 mutex_unlock(&lag->lock); 627 628 schedule_delayed_work(&lag->work, NFP_FL_LAG_DELAY); 629 } 630 631 int nfp_flower_lag_netdev_event(struct nfp_flower_priv *priv, 632 struct net_device *netdev, 633 unsigned long event, void *ptr) 634 { 635 struct nfp_fl_lag *lag = &priv->nfp_lag; 636 int err; 637 638 switch (event) { 639 case NETDEV_CHANGEUPPER: 640 err = nfp_fl_lag_changeupper_event(lag, ptr); 641 if (err) 642 return NOTIFY_BAD; 643 return NOTIFY_OK; 644 case NETDEV_CHANGELOWERSTATE: 645 nfp_fl_lag_changels_event(lag, netdev, ptr); 646 return NOTIFY_OK; 647 case NETDEV_UNREGISTER: 648 nfp_fl_lag_schedule_group_delete(lag, netdev); 649 return NOTIFY_OK; 650 } 651 652 return NOTIFY_DONE; 653 } 654 655 int nfp_flower_lag_reset(struct nfp_fl_lag *lag) 656 { 657 enum nfp_fl_lag_batch batch = NFP_FL_LAG_BATCH_FIRST; 658 659 lag->rst_cfg = true; 660 return nfp_fl_lag_config_group(lag, NULL, NULL, 0, &batch); 661 } 662 663 void nfp_flower_lag_init(struct nfp_fl_lag *lag) 664 { 665 INIT_DELAYED_WORK(&lag->work, nfp_fl_lag_do_work); 666 INIT_LIST_HEAD(&lag->group_list); 667 mutex_init(&lag->lock); 668 ida_init(&lag->ida_handle); 669 670 __skb_queue_head_init(&lag->retrans_skbs); 671 672 /* 0 is a reserved batch version so increment to first valid value. */ 673 nfp_fl_increment_version(lag); 674 } 675 676 void nfp_flower_lag_cleanup(struct nfp_fl_lag *lag) 677 { 678 struct nfp_fl_lag_group *entry, *storage; 679 680 cancel_delayed_work_sync(&lag->work); 681 682 __skb_queue_purge(&lag->retrans_skbs); 683 684 /* Remove all groups. */ 685 mutex_lock(&lag->lock); 686 list_for_each_entry_safe(entry, storage, &lag->group_list, list) { 687 list_del(&entry->list); 688 kfree(entry); 689 } 690 mutex_unlock(&lag->lock); 691 mutex_destroy(&lag->lock); 692 ida_destroy(&lag->ida_handle); 693 } 694