1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * drivers/net/team/team.c - Network team device driver 4 * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com> 5 */ 6 7#include <linux/ethtool.h> 8#include <linux/kernel.h> 9#include <linux/types.h> 10#include <linux/module.h> 11#include <linux/init.h> 12#include <linux/slab.h> 13#include <linux/rcupdate.h> 14#include <linux/errno.h> 15#include <linux/ctype.h> 16#include <linux/notifier.h> 17#include <linux/netdevice.h> 18#include <linux/netpoll.h> 19#include <linux/if_vlan.h> 20#include <linux/if_arp.h> 21#include <linux/socket.h> 22#include <linux/etherdevice.h> 23#include <linux/rtnetlink.h> 24#include <net/rtnetlink.h> 25#include <net/genetlink.h> 26#include <net/netlink.h> 27#include <net/sch_generic.h> 28#include <generated/utsrelease.h> 29#include <linux/if_team.h> 30 31#define DRV_NAME "team" 32 33 34/********** 35 * Helpers 36 **********/ 37 38static struct team_port *team_port_get_rtnl(const struct net_device *dev) 39{ 40 struct team_port *port = rtnl_dereference(dev->rx_handler_data); 41 42 return netif_is_team_port(dev) ? port : NULL; 43} 44 45/* 46 * Since the ability to change device address for open port device is tested in 47 * team_port_add, this function can be called without control of return value 48 */ 49static int __set_port_dev_addr(struct net_device *port_dev, 50 const unsigned char *dev_addr) 51{ 52 struct sockaddr_storage addr; 53 54 memcpy(addr.__data, dev_addr, port_dev->addr_len); 55 addr.ss_family = port_dev->type; 56 return dev_set_mac_address(port_dev, (struct sockaddr *)&addr, NULL); 57} 58 59static int team_port_set_orig_dev_addr(struct team_port *port) 60{ 61 return __set_port_dev_addr(port->dev, port->orig.dev_addr); 62} 63 64static int team_port_set_team_dev_addr(struct team *team, 65 struct team_port *port) 66{ 67 return __set_port_dev_addr(port->dev, team->dev->dev_addr); 68} 69 70int team_modeop_port_enter(struct team *team, struct team_port *port) 71{ 72 return team_port_set_team_dev_addr(team, port); 73} 74EXPORT_SYMBOL(team_modeop_port_enter); 75 76void team_modeop_port_change_dev_addr(struct team *team, 77 struct team_port *port) 78{ 79 team_port_set_team_dev_addr(team, port); 80} 81EXPORT_SYMBOL(team_modeop_port_change_dev_addr); 82 83static void team_lower_state_changed(struct team_port *port) 84{ 85 struct netdev_lag_lower_state_info info; 86 87 info.link_up = port->linkup; 88 info.tx_enabled = team_port_enabled(port); 89 netdev_lower_state_changed(port->dev, &info); 90} 91 92static void team_refresh_port_linkup(struct team_port *port) 93{ 94 bool new_linkup = port->user.linkup_enabled ? port->user.linkup : 95 port->state.linkup; 96 97 if (port->linkup != new_linkup) { 98 port->linkup = new_linkup; 99 team_lower_state_changed(port); 100 } 101} 102 103 104/******************* 105 * Options handling 106 *******************/ 107 108struct team_option_inst { /* One for each option instance */ 109 struct list_head list; 110 struct list_head tmp_list; 111 struct team_option *option; 112 struct team_option_inst_info info; 113 bool changed; 114 bool removed; 115}; 116 117static struct team_option *__team_find_option(struct team *team, 118 const char *opt_name) 119{ 120 struct team_option *option; 121 122 list_for_each_entry(option, &team->option_list, list) { 123 if (strcmp(option->name, opt_name) == 0) 124 return option; 125 } 126 return NULL; 127} 128 129static void __team_option_inst_del(struct team_option_inst *opt_inst) 130{ 131 list_del(&opt_inst->list); 132 kfree(opt_inst); 133} 134 135static void __team_option_inst_del_option(struct team *team, 136 struct team_option *option) 137{ 138 struct team_option_inst *opt_inst, *tmp; 139 140 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { 141 if (opt_inst->option == option) 142 __team_option_inst_del(opt_inst); 143 } 144} 145 146static int __team_option_inst_add(struct team *team, struct team_option *option, 147 struct team_port *port) 148{ 149 struct team_option_inst *opt_inst; 150 unsigned int array_size; 151 unsigned int i; 152 153 array_size = option->array_size; 154 if (!array_size) 155 array_size = 1; /* No array but still need one instance */ 156 157 for (i = 0; i < array_size; i++) { 158 opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL); 159 if (!opt_inst) 160 return -ENOMEM; 161 opt_inst->option = option; 162 opt_inst->info.port = port; 163 opt_inst->info.array_index = i; 164 opt_inst->changed = true; 165 opt_inst->removed = false; 166 list_add_tail(&opt_inst->list, &team->option_inst_list); 167 if (option->init) 168 option->init(team, &opt_inst->info); 169 170 } 171 return 0; 172} 173 174static int __team_option_inst_add_option(struct team *team, 175 struct team_option *option) 176{ 177 int err; 178 179 if (!option->per_port) { 180 err = __team_option_inst_add(team, option, NULL); 181 if (err) 182 goto inst_del_option; 183 } 184 return 0; 185 186inst_del_option: 187 __team_option_inst_del_option(team, option); 188 return err; 189} 190 191static void __team_option_inst_mark_removed_option(struct team *team, 192 struct team_option *option) 193{ 194 struct team_option_inst *opt_inst; 195 196 list_for_each_entry(opt_inst, &team->option_inst_list, list) { 197 if (opt_inst->option == option) { 198 opt_inst->changed = true; 199 opt_inst->removed = true; 200 } 201 } 202} 203 204static void __team_option_inst_del_port(struct team *team, 205 struct team_port *port) 206{ 207 struct team_option_inst *opt_inst, *tmp; 208 209 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { 210 if (opt_inst->option->per_port && 211 opt_inst->info.port == port) 212 __team_option_inst_del(opt_inst); 213 } 214} 215 216static int __team_option_inst_add_port(struct team *team, 217 struct team_port *port) 218{ 219 struct team_option *option; 220 int err; 221 222 list_for_each_entry(option, &team->option_list, list) { 223 if (!option->per_port) 224 continue; 225 err = __team_option_inst_add(team, option, port); 226 if (err) 227 goto inst_del_port; 228 } 229 return 0; 230 231inst_del_port: 232 __team_option_inst_del_port(team, port); 233 return err; 234} 235 236static void __team_option_inst_mark_removed_port(struct team *team, 237 struct team_port *port) 238{ 239 struct team_option_inst *opt_inst; 240 241 list_for_each_entry(opt_inst, &team->option_inst_list, list) { 242 if (opt_inst->info.port == port) { 243 opt_inst->changed = true; 244 opt_inst->removed = true; 245 } 246 } 247} 248 249static int __team_options_register(struct team *team, 250 const struct team_option *option, 251 size_t option_count) 252{ 253 int i; 254 struct team_option **dst_opts; 255 int err; 256 257 dst_opts = kcalloc(option_count, sizeof(struct team_option *), 258 GFP_KERNEL); 259 if (!dst_opts) 260 return -ENOMEM; 261 for (i = 0; i < option_count; i++, option++) { 262 if (__team_find_option(team, option->name)) { 263 err = -EEXIST; 264 goto alloc_rollback; 265 } 266 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL); 267 if (!dst_opts[i]) { 268 err = -ENOMEM; 269 goto alloc_rollback; 270 } 271 } 272 273 for (i = 0; i < option_count; i++) { 274 err = __team_option_inst_add_option(team, dst_opts[i]); 275 if (err) 276 goto inst_rollback; 277 list_add_tail(&dst_opts[i]->list, &team->option_list); 278 } 279 280 kfree(dst_opts); 281 return 0; 282 283inst_rollback: 284 for (i--; i >= 0; i--) { 285 __team_option_inst_del_option(team, dst_opts[i]); 286 list_del(&dst_opts[i]->list); 287 } 288 289 i = option_count; 290alloc_rollback: 291 for (i--; i >= 0; i--) 292 kfree(dst_opts[i]); 293 294 kfree(dst_opts); 295 return err; 296} 297 298static void __team_options_mark_removed(struct team *team, 299 const struct team_option *option, 300 size_t option_count) 301{ 302 int i; 303 304 for (i = 0; i < option_count; i++, option++) { 305 struct team_option *del_opt; 306 307 del_opt = __team_find_option(team, option->name); 308 if (del_opt) 309 __team_option_inst_mark_removed_option(team, del_opt); 310 } 311} 312 313static void __team_options_unregister(struct team *team, 314 const struct team_option *option, 315 size_t option_count) 316{ 317 int i; 318 319 for (i = 0; i < option_count; i++, option++) { 320 struct team_option *del_opt; 321 322 del_opt = __team_find_option(team, option->name); 323 if (del_opt) { 324 __team_option_inst_del_option(team, del_opt); 325 list_del(&del_opt->list); 326 kfree(del_opt); 327 } 328 } 329} 330 331static void __team_options_change_check(struct team *team); 332 333int team_options_register(struct team *team, 334 const struct team_option *option, 335 size_t option_count) 336{ 337 int err; 338 339 err = __team_options_register(team, option, option_count); 340 if (err) 341 return err; 342 __team_options_change_check(team); 343 return 0; 344} 345EXPORT_SYMBOL(team_options_register); 346 347void team_options_unregister(struct team *team, 348 const struct team_option *option, 349 size_t option_count) 350{ 351 __team_options_mark_removed(team, option, option_count); 352 __team_options_change_check(team); 353 __team_options_unregister(team, option, option_count); 354} 355EXPORT_SYMBOL(team_options_unregister); 356 357static int team_option_get(struct team *team, 358 struct team_option_inst *opt_inst, 359 struct team_gsetter_ctx *ctx) 360{ 361 if (!opt_inst->option->getter) 362 return -EOPNOTSUPP; 363 364 opt_inst->option->getter(team, ctx); 365 return 0; 366} 367 368static int team_option_set(struct team *team, 369 struct team_option_inst *opt_inst, 370 struct team_gsetter_ctx *ctx) 371{ 372 if (!opt_inst->option->setter) 373 return -EOPNOTSUPP; 374 return opt_inst->option->setter(team, ctx); 375} 376 377void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info) 378{ 379 struct team_option_inst *opt_inst; 380 381 opt_inst = container_of(opt_inst_info, struct team_option_inst, info); 382 opt_inst->changed = true; 383} 384EXPORT_SYMBOL(team_option_inst_set_change); 385 386void team_options_change_check(struct team *team) 387{ 388 __team_options_change_check(team); 389} 390EXPORT_SYMBOL(team_options_change_check); 391 392 393/**************** 394 * Mode handling 395 ****************/ 396 397static LIST_HEAD(mode_list); 398static DEFINE_SPINLOCK(mode_list_lock); 399 400struct team_mode_item { 401 struct list_head list; 402 const struct team_mode *mode; 403}; 404 405static struct team_mode_item *__find_mode(const char *kind) 406{ 407 struct team_mode_item *mitem; 408 409 list_for_each_entry(mitem, &mode_list, list) { 410 if (strcmp(mitem->mode->kind, kind) == 0) 411 return mitem; 412 } 413 return NULL; 414} 415 416static bool is_good_mode_name(const char *name) 417{ 418 while (*name != '\0') { 419 if (!isalpha(*name) && !isdigit(*name) && *name != '_') 420 return false; 421 name++; 422 } 423 return true; 424} 425 426int team_mode_register(const struct team_mode *mode) 427{ 428 int err = 0; 429 struct team_mode_item *mitem; 430 431 if (!is_good_mode_name(mode->kind) || 432 mode->priv_size > TEAM_MODE_PRIV_SIZE) 433 return -EINVAL; 434 435 mitem = kmalloc(sizeof(*mitem), GFP_KERNEL); 436 if (!mitem) 437 return -ENOMEM; 438 439 spin_lock(&mode_list_lock); 440 if (__find_mode(mode->kind)) { 441 err = -EEXIST; 442 kfree(mitem); 443 goto unlock; 444 } 445 mitem->mode = mode; 446 list_add_tail(&mitem->list, &mode_list); 447unlock: 448 spin_unlock(&mode_list_lock); 449 return err; 450} 451EXPORT_SYMBOL(team_mode_register); 452 453void team_mode_unregister(const struct team_mode *mode) 454{ 455 struct team_mode_item *mitem; 456 457 spin_lock(&mode_list_lock); 458 mitem = __find_mode(mode->kind); 459 if (mitem) { 460 list_del_init(&mitem->list); 461 kfree(mitem); 462 } 463 spin_unlock(&mode_list_lock); 464} 465EXPORT_SYMBOL(team_mode_unregister); 466 467static const struct team_mode *team_mode_get(const char *kind) 468{ 469 struct team_mode_item *mitem; 470 const struct team_mode *mode = NULL; 471 472 if (!try_module_get(THIS_MODULE)) 473 return NULL; 474 475 spin_lock(&mode_list_lock); 476 mitem = __find_mode(kind); 477 if (!mitem) { 478 spin_unlock(&mode_list_lock); 479 request_module("team-mode-%s", kind); 480 spin_lock(&mode_list_lock); 481 mitem = __find_mode(kind); 482 } 483 if (mitem) { 484 mode = mitem->mode; 485 if (!try_module_get(mode->owner)) 486 mode = NULL; 487 } 488 489 spin_unlock(&mode_list_lock); 490 module_put(THIS_MODULE); 491 return mode; 492} 493 494static void team_mode_put(const struct team_mode *mode) 495{ 496 module_put(mode->owner); 497} 498 499static bool team_dummy_transmit(struct team *team, struct sk_buff *skb) 500{ 501 dev_kfree_skb_any(skb); 502 return false; 503} 504 505static rx_handler_result_t team_dummy_receive(struct team *team, 506 struct team_port *port, 507 struct sk_buff *skb) 508{ 509 return RX_HANDLER_ANOTHER; 510} 511 512static const struct team_mode __team_no_mode = { 513 .kind = "*NOMODE*", 514}; 515 516static bool team_is_mode_set(struct team *team) 517{ 518 return team->mode != &__team_no_mode; 519} 520 521static void team_set_no_mode(struct team *team) 522{ 523 team->user_carrier_enabled = false; 524 team->mode = &__team_no_mode; 525} 526 527static void team_adjust_ops(struct team *team) 528{ 529 /* 530 * To avoid checks in rx/tx skb paths, ensure here that non-null and 531 * correct ops are always set. 532 */ 533 534 if (!team->en_port_count || !team_is_mode_set(team) || 535 !team->mode->ops->transmit) 536 team->ops.transmit = team_dummy_transmit; 537 else 538 team->ops.transmit = team->mode->ops->transmit; 539 540 if (!team->en_port_count || !team_is_mode_set(team) || 541 !team->mode->ops->receive) 542 team->ops.receive = team_dummy_receive; 543 else 544 team->ops.receive = team->mode->ops->receive; 545} 546 547/* 548 * We can benefit from the fact that it's ensured no port is present 549 * at the time of mode change. Therefore no packets are in fly so there's no 550 * need to set mode operations in any special way. 551 */ 552static int __team_change_mode(struct team *team, 553 const struct team_mode *new_mode) 554{ 555 /* Check if mode was previously set and do cleanup if so */ 556 if (team_is_mode_set(team)) { 557 void (*exit_op)(struct team *team) = team->ops.exit; 558 559 /* Clear ops area so no callback is called any longer */ 560 memset(&team->ops, 0, sizeof(struct team_mode_ops)); 561 team_adjust_ops(team); 562 563 if (exit_op) 564 exit_op(team); 565 team_mode_put(team->mode); 566 team_set_no_mode(team); 567 /* zero private data area */ 568 memset(&team->mode_priv, 0, 569 sizeof(struct team) - offsetof(struct team, mode_priv)); 570 } 571 572 if (!new_mode) 573 return 0; 574 575 if (new_mode->ops->init) { 576 int err; 577 578 err = new_mode->ops->init(team); 579 if (err) 580 return err; 581 } 582 583 team->mode = new_mode; 584 memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops)); 585 team_adjust_ops(team); 586 587 return 0; 588} 589 590static int team_change_mode(struct team *team, const char *kind) 591{ 592 const struct team_mode *new_mode; 593 struct net_device *dev = team->dev; 594 int err; 595 596 if (!list_empty(&team->port_list)) { 597 netdev_err(dev, "No ports can be present during mode change\n"); 598 return -EBUSY; 599 } 600 601 if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) { 602 netdev_err(dev, "Unable to change to the same mode the team is in\n"); 603 return -EINVAL; 604 } 605 606 new_mode = team_mode_get(kind); 607 if (!new_mode) { 608 netdev_err(dev, "Mode \"%s\" not found\n", kind); 609 return -EINVAL; 610 } 611 612 err = __team_change_mode(team, new_mode); 613 if (err) { 614 netdev_err(dev, "Failed to change to mode \"%s\"\n", kind); 615 team_mode_put(new_mode); 616 return err; 617 } 618 619 netdev_info(dev, "Mode changed to \"%s\"\n", kind); 620 return 0; 621} 622 623 624/********************* 625 * Peers notification 626 *********************/ 627 628static void team_notify_peers_work(struct work_struct *work) 629{ 630 struct team *team; 631 int val; 632 633 team = container_of(work, struct team, notify_peers.dw.work); 634 635 if (!rtnl_trylock()) { 636 schedule_delayed_work(&team->notify_peers.dw, 0); 637 return; 638 } 639 val = atomic_dec_if_positive(&team->notify_peers.count_pending); 640 if (val < 0) { 641 rtnl_unlock(); 642 return; 643 } 644 call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, team->dev); 645 rtnl_unlock(); 646 if (val) 647 schedule_delayed_work(&team->notify_peers.dw, 648 msecs_to_jiffies(team->notify_peers.interval)); 649} 650 651static void team_notify_peers(struct team *team) 652{ 653 if (!team->notify_peers.count || !netif_running(team->dev)) 654 return; 655 atomic_add(team->notify_peers.count, &team->notify_peers.count_pending); 656 schedule_delayed_work(&team->notify_peers.dw, 0); 657} 658 659static void team_notify_peers_init(struct team *team) 660{ 661 INIT_DELAYED_WORK(&team->notify_peers.dw, team_notify_peers_work); 662} 663 664static void team_notify_peers_fini(struct team *team) 665{ 666 cancel_delayed_work_sync(&team->notify_peers.dw); 667} 668 669 670/******************************* 671 * Send multicast group rejoins 672 *******************************/ 673 674static void team_mcast_rejoin_work(struct work_struct *work) 675{ 676 struct team *team; 677 int val; 678 679 team = container_of(work, struct team, mcast_rejoin.dw.work); 680 681 if (!rtnl_trylock()) { 682 schedule_delayed_work(&team->mcast_rejoin.dw, 0); 683 return; 684 } 685 val = atomic_dec_if_positive(&team->mcast_rejoin.count_pending); 686 if (val < 0) { 687 rtnl_unlock(); 688 return; 689 } 690 call_netdevice_notifiers(NETDEV_RESEND_IGMP, team->dev); 691 rtnl_unlock(); 692 if (val) 693 schedule_delayed_work(&team->mcast_rejoin.dw, 694 msecs_to_jiffies(team->mcast_rejoin.interval)); 695} 696 697static void team_mcast_rejoin(struct team *team) 698{ 699 if (!team->mcast_rejoin.count || !netif_running(team->dev)) 700 return; 701 atomic_add(team->mcast_rejoin.count, &team->mcast_rejoin.count_pending); 702 schedule_delayed_work(&team->mcast_rejoin.dw, 0); 703} 704 705static void team_mcast_rejoin_init(struct team *team) 706{ 707 INIT_DELAYED_WORK(&team->mcast_rejoin.dw, team_mcast_rejoin_work); 708} 709 710static void team_mcast_rejoin_fini(struct team *team) 711{ 712 cancel_delayed_work_sync(&team->mcast_rejoin.dw); 713} 714 715 716/************************ 717 * Rx path frame handler 718 ************************/ 719 720/* note: already called with rcu_read_lock */ 721static rx_handler_result_t team_handle_frame(struct sk_buff **pskb) 722{ 723 struct sk_buff *skb = *pskb; 724 struct team_port *port; 725 struct team *team; 726 rx_handler_result_t res; 727 728 skb = skb_share_check(skb, GFP_ATOMIC); 729 if (!skb) 730 return RX_HANDLER_CONSUMED; 731 732 *pskb = skb; 733 734 port = team_port_get_rcu(skb->dev); 735 team = port->team; 736 if (!team_port_enabled(port)) { 737 if (is_link_local_ether_addr(eth_hdr(skb)->h_dest)) 738 /* link-local packets are mostly useful when stack receives them 739 * with the link they arrive on. 740 */ 741 return RX_HANDLER_PASS; 742 /* allow exact match delivery for disabled ports */ 743 res = RX_HANDLER_EXACT; 744 } else { 745 res = team->ops.receive(team, port, skb); 746 } 747 if (res == RX_HANDLER_ANOTHER) { 748 struct team_pcpu_stats *pcpu_stats; 749 750 pcpu_stats = this_cpu_ptr(team->pcpu_stats); 751 u64_stats_update_begin(&pcpu_stats->syncp); 752 u64_stats_inc(&pcpu_stats->rx_packets); 753 u64_stats_add(&pcpu_stats->rx_bytes, skb->len); 754 if (skb->pkt_type == PACKET_MULTICAST) 755 u64_stats_inc(&pcpu_stats->rx_multicast); 756 u64_stats_update_end(&pcpu_stats->syncp); 757 758 skb->dev = team->dev; 759 } else if (res == RX_HANDLER_EXACT) { 760 this_cpu_inc(team->pcpu_stats->rx_nohandler); 761 } else { 762 this_cpu_inc(team->pcpu_stats->rx_dropped); 763 } 764 765 return res; 766} 767 768 769/************************************* 770 * Multiqueue Tx port select override 771 *************************************/ 772 773static int team_queue_override_init(struct team *team) 774{ 775 struct list_head *listarr; 776 unsigned int queue_cnt = team->dev->num_tx_queues - 1; 777 unsigned int i; 778 779 if (!queue_cnt) 780 return 0; 781 listarr = kmalloc_array(queue_cnt, sizeof(struct list_head), 782 GFP_KERNEL); 783 if (!listarr) 784 return -ENOMEM; 785 team->qom_lists = listarr; 786 for (i = 0; i < queue_cnt; i++) 787 INIT_LIST_HEAD(listarr++); 788 return 0; 789} 790 791static void team_queue_override_fini(struct team *team) 792{ 793 kfree(team->qom_lists); 794} 795 796static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id) 797{ 798 return &team->qom_lists[queue_id - 1]; 799} 800 801/* 802 * note: already called with rcu_read_lock 803 */ 804static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb) 805{ 806 struct list_head *qom_list; 807 struct team_port *port; 808 809 if (!team->queue_override_enabled || !skb->queue_mapping) 810 return false; 811 qom_list = __team_get_qom_list(team, skb->queue_mapping); 812 list_for_each_entry_rcu(port, qom_list, qom_list) { 813 if (!team_dev_queue_xmit(team, port, skb)) 814 return true; 815 } 816 return false; 817} 818 819static void __team_queue_override_port_del(struct team *team, 820 struct team_port *port) 821{ 822 if (!port->queue_id) 823 return; 824 list_del_rcu(&port->qom_list); 825} 826 827static bool team_queue_override_port_has_gt_prio_than(struct team_port *port, 828 struct team_port *cur) 829{ 830 if (port->priority < cur->priority) 831 return true; 832 if (port->priority > cur->priority) 833 return false; 834 if (port->index < cur->index) 835 return true; 836 return false; 837} 838 839static void __team_queue_override_port_add(struct team *team, 840 struct team_port *port) 841{ 842 struct team_port *cur; 843 struct list_head *qom_list; 844 struct list_head *node; 845 846 if (!port->queue_id) 847 return; 848 qom_list = __team_get_qom_list(team, port->queue_id); 849 node = qom_list; 850 list_for_each_entry(cur, qom_list, qom_list) { 851 if (team_queue_override_port_has_gt_prio_than(port, cur)) 852 break; 853 node = &cur->qom_list; 854 } 855 list_add_tail_rcu(&port->qom_list, node); 856} 857 858static void __team_queue_override_enabled_check(struct team *team) 859{ 860 struct team_port *port; 861 bool enabled = false; 862 863 list_for_each_entry(port, &team->port_list, list) { 864 if (port->queue_id) { 865 enabled = true; 866 break; 867 } 868 } 869 if (enabled == team->queue_override_enabled) 870 return; 871 netdev_dbg(team->dev, "%s queue override\n", 872 enabled ? "Enabling" : "Disabling"); 873 team->queue_override_enabled = enabled; 874} 875 876static void team_queue_override_port_prio_changed(struct team *team, 877 struct team_port *port) 878{ 879 if (!port->queue_id || team_port_enabled(port)) 880 return; 881 __team_queue_override_port_del(team, port); 882 __team_queue_override_port_add(team, port); 883 __team_queue_override_enabled_check(team); 884} 885 886static void team_queue_override_port_change_queue_id(struct team *team, 887 struct team_port *port, 888 u16 new_queue_id) 889{ 890 if (team_port_enabled(port)) { 891 __team_queue_override_port_del(team, port); 892 port->queue_id = new_queue_id; 893 __team_queue_override_port_add(team, port); 894 __team_queue_override_enabled_check(team); 895 } else { 896 port->queue_id = new_queue_id; 897 } 898} 899 900static void team_queue_override_port_add(struct team *team, 901 struct team_port *port) 902{ 903 __team_queue_override_port_add(team, port); 904 __team_queue_override_enabled_check(team); 905} 906 907static void team_queue_override_port_del(struct team *team, 908 struct team_port *port) 909{ 910 __team_queue_override_port_del(team, port); 911 __team_queue_override_enabled_check(team); 912} 913 914 915/**************** 916 * Port handling 917 ****************/ 918 919static bool team_port_find(const struct team *team, 920 const struct team_port *port) 921{ 922 struct team_port *cur; 923 924 list_for_each_entry(cur, &team->port_list, list) 925 if (cur == port) 926 return true; 927 return false; 928} 929 930/* 931 * Enable/disable port by adding to enabled port hashlist and setting 932 * port->index (Might be racy so reader could see incorrect ifindex when 933 * processing a flying packet, but that is not a problem). Write guarded 934 * by team->lock. 935 */ 936static void team_port_enable(struct team *team, 937 struct team_port *port) 938{ 939 if (team_port_enabled(port)) 940 return; 941 port->index = team->en_port_count++; 942 hlist_add_head_rcu(&port->hlist, 943 team_port_index_hash(team, port->index)); 944 team_adjust_ops(team); 945 team_queue_override_port_add(team, port); 946 if (team->ops.port_enabled) 947 team->ops.port_enabled(team, port); 948 team_notify_peers(team); 949 team_mcast_rejoin(team); 950 team_lower_state_changed(port); 951} 952 953static void __reconstruct_port_hlist(struct team *team, int rm_index) 954{ 955 int i; 956 struct team_port *port; 957 958 for (i = rm_index + 1; i < team->en_port_count; i++) { 959 port = team_get_port_by_index(team, i); 960 hlist_del_rcu(&port->hlist); 961 port->index--; 962 hlist_add_head_rcu(&port->hlist, 963 team_port_index_hash(team, port->index)); 964 } 965} 966 967static void team_port_disable(struct team *team, 968 struct team_port *port) 969{ 970 if (!team_port_enabled(port)) 971 return; 972 if (team->ops.port_disabled) 973 team->ops.port_disabled(team, port); 974 hlist_del_rcu(&port->hlist); 975 __reconstruct_port_hlist(team, port->index); 976 port->index = -1; 977 team->en_port_count--; 978 team_queue_override_port_del(team, port); 979 team_adjust_ops(team); 980 team_lower_state_changed(port); 981} 982 983#define TEAM_VLAN_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ 984 NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | \ 985 NETIF_F_HIGHDMA | NETIF_F_LRO) 986 987#define TEAM_ENC_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ 988 NETIF_F_RXCSUM | NETIF_F_GSO_SOFTWARE) 989 990static void __team_compute_features(struct team *team) 991{ 992 struct team_port *port; 993 netdev_features_t vlan_features = TEAM_VLAN_FEATURES & 994 NETIF_F_ALL_FOR_ALL; 995 netdev_features_t enc_features = TEAM_ENC_FEATURES; 996 unsigned short max_hard_header_len = ETH_HLEN; 997 unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE | 998 IFF_XMIT_DST_RELEASE_PERM; 999 1000 rcu_read_lock(); 1001 list_for_each_entry_rcu(port, &team->port_list, list) { 1002 vlan_features = netdev_increment_features(vlan_features, 1003 port->dev->vlan_features, 1004 TEAM_VLAN_FEATURES); 1005 enc_features = 1006 netdev_increment_features(enc_features, 1007 port->dev->hw_enc_features, 1008 TEAM_ENC_FEATURES); 1009 1010 1011 dst_release_flag &= port->dev->priv_flags; 1012 if (port->dev->hard_header_len > max_hard_header_len) 1013 max_hard_header_len = port->dev->hard_header_len; 1014 } 1015 rcu_read_unlock(); 1016 1017 team->dev->vlan_features = vlan_features; 1018 team->dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL | 1019 NETIF_F_HW_VLAN_CTAG_TX | 1020 NETIF_F_HW_VLAN_STAG_TX; 1021 team->dev->hard_header_len = max_hard_header_len; 1022 1023 team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; 1024 if (dst_release_flag == (IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM)) 1025 team->dev->priv_flags |= IFF_XMIT_DST_RELEASE; 1026} 1027 1028static void team_compute_features(struct team *team) 1029{ 1030 __team_compute_features(team); 1031 netdev_change_features(team->dev); 1032} 1033 1034static int team_port_enter(struct team *team, struct team_port *port) 1035{ 1036 int err = 0; 1037 1038 dev_hold(team->dev); 1039 if (team->ops.port_enter) { 1040 err = team->ops.port_enter(team, port); 1041 if (err) { 1042 netdev_err(team->dev, "Device %s failed to enter team mode\n", 1043 port->dev->name); 1044 goto err_port_enter; 1045 } 1046 } 1047 1048 return 0; 1049 1050err_port_enter: 1051 dev_put(team->dev); 1052 1053 return err; 1054} 1055 1056static void team_port_leave(struct team *team, struct team_port *port) 1057{ 1058 if (team->ops.port_leave) 1059 team->ops.port_leave(team, port); 1060 dev_put(team->dev); 1061} 1062 1063#ifdef CONFIG_NET_POLL_CONTROLLER 1064static int __team_port_enable_netpoll(struct team_port *port) 1065{ 1066 struct netpoll *np; 1067 int err; 1068 1069 np = kzalloc(sizeof(*np), GFP_KERNEL); 1070 if (!np) 1071 return -ENOMEM; 1072 1073 err = __netpoll_setup(np, port->dev); 1074 if (err) { 1075 kfree(np); 1076 return err; 1077 } 1078 port->np = np; 1079 return err; 1080} 1081 1082static int team_port_enable_netpoll(struct team_port *port) 1083{ 1084 if (!port->team->dev->npinfo) 1085 return 0; 1086 1087 return __team_port_enable_netpoll(port); 1088} 1089 1090static void team_port_disable_netpoll(struct team_port *port) 1091{ 1092 struct netpoll *np = port->np; 1093 1094 if (!np) 1095 return; 1096 port->np = NULL; 1097 1098 __netpoll_free(np); 1099} 1100#else 1101static int team_port_enable_netpoll(struct team_port *port) 1102{ 1103 return 0; 1104} 1105static void team_port_disable_netpoll(struct team_port *port) 1106{ 1107} 1108#endif 1109 1110static int team_upper_dev_link(struct team *team, struct team_port *port, 1111 struct netlink_ext_ack *extack) 1112{ 1113 struct netdev_lag_upper_info lag_upper_info; 1114 int err; 1115 1116 lag_upper_info.tx_type = team->mode->lag_tx_type; 1117 lag_upper_info.hash_type = NETDEV_LAG_HASH_UNKNOWN; 1118 err = netdev_master_upper_dev_link(port->dev, team->dev, NULL, 1119 &lag_upper_info, extack); 1120 if (err) 1121 return err; 1122 port->dev->priv_flags |= IFF_TEAM_PORT; 1123 return 0; 1124} 1125 1126static void team_upper_dev_unlink(struct team *team, struct team_port *port) 1127{ 1128 netdev_upper_dev_unlink(port->dev, team->dev); 1129 port->dev->priv_flags &= ~IFF_TEAM_PORT; 1130} 1131 1132static void __team_port_change_port_added(struct team_port *port, bool linkup); 1133static int team_dev_type_check_change(struct net_device *dev, 1134 struct net_device *port_dev); 1135 1136static int team_port_add(struct team *team, struct net_device *port_dev, 1137 struct netlink_ext_ack *extack) 1138{ 1139 struct net_device *dev = team->dev; 1140 struct team_port *port; 1141 char *portname = port_dev->name; 1142 int err; 1143 1144 if (port_dev->flags & IFF_LOOPBACK) { 1145 NL_SET_ERR_MSG(extack, "Loopback device can't be added as a team port"); 1146 netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n", 1147 portname); 1148 return -EINVAL; 1149 } 1150 1151 if (netif_is_team_port(port_dev)) { 1152 NL_SET_ERR_MSG(extack, "Device is already a port of a team device"); 1153 netdev_err(dev, "Device %s is already a port " 1154 "of a team device\n", portname); 1155 return -EBUSY; 1156 } 1157 1158 if (dev == port_dev) { 1159 NL_SET_ERR_MSG(extack, "Cannot enslave team device to itself"); 1160 netdev_err(dev, "Cannot enslave team device to itself\n"); 1161 return -EINVAL; 1162 } 1163 1164 if (netdev_has_upper_dev(dev, port_dev)) { 1165 NL_SET_ERR_MSG(extack, "Device is already an upper device of the team interface"); 1166 netdev_err(dev, "Device %s is already an upper device of the team interface\n", 1167 portname); 1168 return -EBUSY; 1169 } 1170 1171 if (port_dev->features & NETIF_F_VLAN_CHALLENGED && 1172 vlan_uses_dev(dev)) { 1173 NL_SET_ERR_MSG(extack, "Device is VLAN challenged and team device has VLAN set up"); 1174 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n", 1175 portname); 1176 return -EPERM; 1177 } 1178 1179 err = team_dev_type_check_change(dev, port_dev); 1180 if (err) 1181 return err; 1182 1183 if (port_dev->flags & IFF_UP) { 1184 NL_SET_ERR_MSG(extack, "Device is up. Set it down before adding it as a team port"); 1185 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n", 1186 portname); 1187 return -EBUSY; 1188 } 1189 1190 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size, 1191 GFP_KERNEL); 1192 if (!port) 1193 return -ENOMEM; 1194 1195 port->dev = port_dev; 1196 port->team = team; 1197 INIT_LIST_HEAD(&port->qom_list); 1198 1199 port->orig.mtu = port_dev->mtu; 1200 err = dev_set_mtu(port_dev, dev->mtu); 1201 if (err) { 1202 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err); 1203 goto err_set_mtu; 1204 } 1205 1206 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len); 1207 1208 err = team_port_enter(team, port); 1209 if (err) { 1210 netdev_err(dev, "Device %s failed to enter team mode\n", 1211 portname); 1212 goto err_port_enter; 1213 } 1214 1215 err = dev_open(port_dev, extack); 1216 if (err) { 1217 netdev_dbg(dev, "Device %s opening failed\n", 1218 portname); 1219 goto err_dev_open; 1220 } 1221 1222 err = vlan_vids_add_by_dev(port_dev, dev); 1223 if (err) { 1224 netdev_err(dev, "Failed to add vlan ids to device %s\n", 1225 portname); 1226 goto err_vids_add; 1227 } 1228 1229 err = team_port_enable_netpoll(port); 1230 if (err) { 1231 netdev_err(dev, "Failed to enable netpoll on device %s\n", 1232 portname); 1233 goto err_enable_netpoll; 1234 } 1235 1236 if (!(dev->features & NETIF_F_LRO)) 1237 dev_disable_lro(port_dev); 1238 1239 err = netdev_rx_handler_register(port_dev, team_handle_frame, 1240 port); 1241 if (err) { 1242 netdev_err(dev, "Device %s failed to register rx_handler\n", 1243 portname); 1244 goto err_handler_register; 1245 } 1246 1247 err = team_upper_dev_link(team, port, extack); 1248 if (err) { 1249 netdev_err(dev, "Device %s failed to set upper link\n", 1250 portname); 1251 goto err_set_upper_link; 1252 } 1253 1254 err = __team_option_inst_add_port(team, port); 1255 if (err) { 1256 netdev_err(dev, "Device %s failed to add per-port options\n", 1257 portname); 1258 goto err_option_port_add; 1259 } 1260 1261 /* set promiscuity level to new slave */ 1262 if (dev->flags & IFF_PROMISC) { 1263 err = dev_set_promiscuity(port_dev, 1); 1264 if (err) 1265 goto err_set_slave_promisc; 1266 } 1267 1268 /* set allmulti level to new slave */ 1269 if (dev->flags & IFF_ALLMULTI) { 1270 err = dev_set_allmulti(port_dev, 1); 1271 if (err) { 1272 if (dev->flags & IFF_PROMISC) 1273 dev_set_promiscuity(port_dev, -1); 1274 goto err_set_slave_promisc; 1275 } 1276 } 1277 1278 if (dev->flags & IFF_UP) { 1279 netif_addr_lock_bh(dev); 1280 dev_uc_sync_multiple(port_dev, dev); 1281 dev_mc_sync_multiple(port_dev, dev); 1282 netif_addr_unlock_bh(dev); 1283 } 1284 1285 port->index = -1; 1286 list_add_tail_rcu(&port->list, &team->port_list); 1287 team_port_enable(team, port); 1288 __team_compute_features(team); 1289 __team_port_change_port_added(port, !!netif_oper_up(port_dev)); 1290 __team_options_change_check(team); 1291 1292 netdev_info(dev, "Port device %s added\n", portname); 1293 1294 return 0; 1295 1296err_set_slave_promisc: 1297 __team_option_inst_del_port(team, port); 1298 1299err_option_port_add: 1300 team_upper_dev_unlink(team, port); 1301 1302err_set_upper_link: 1303 netdev_rx_handler_unregister(port_dev); 1304 1305err_handler_register: 1306 team_port_disable_netpoll(port); 1307 1308err_enable_netpoll: 1309 vlan_vids_del_by_dev(port_dev, dev); 1310 1311err_vids_add: 1312 dev_close(port_dev); 1313 1314err_dev_open: 1315 team_port_leave(team, port); 1316 team_port_set_orig_dev_addr(port); 1317 1318err_port_enter: 1319 dev_set_mtu(port_dev, port->orig.mtu); 1320 1321err_set_mtu: 1322 kfree(port); 1323 1324 return err; 1325} 1326 1327static void __team_port_change_port_removed(struct team_port *port); 1328 1329static int team_port_del(struct team *team, struct net_device *port_dev) 1330{ 1331 struct net_device *dev = team->dev; 1332 struct team_port *port; 1333 char *portname = port_dev->name; 1334 1335 port = team_port_get_rtnl(port_dev); 1336 if (!port || !team_port_find(team, port)) { 1337 netdev_err(dev, "Device %s does not act as a port of this team\n", 1338 portname); 1339 return -ENOENT; 1340 } 1341 1342 team_port_disable(team, port); 1343 list_del_rcu(&port->list); 1344 1345 if (dev->flags & IFF_PROMISC) 1346 dev_set_promiscuity(port_dev, -1); 1347 if (dev->flags & IFF_ALLMULTI) 1348 dev_set_allmulti(port_dev, -1); 1349 1350 team_upper_dev_unlink(team, port); 1351 netdev_rx_handler_unregister(port_dev); 1352 team_port_disable_netpoll(port); 1353 vlan_vids_del_by_dev(port_dev, dev); 1354 if (dev->flags & IFF_UP) { 1355 dev_uc_unsync(port_dev, dev); 1356 dev_mc_unsync(port_dev, dev); 1357 } 1358 dev_close(port_dev); 1359 team_port_leave(team, port); 1360 1361 __team_option_inst_mark_removed_port(team, port); 1362 __team_options_change_check(team); 1363 __team_option_inst_del_port(team, port); 1364 __team_port_change_port_removed(port); 1365 1366 team_port_set_orig_dev_addr(port); 1367 dev_set_mtu(port_dev, port->orig.mtu); 1368 kfree_rcu(port, rcu); 1369 netdev_info(dev, "Port device %s removed\n", portname); 1370 __team_compute_features(team); 1371 1372 return 0; 1373} 1374 1375 1376/***************** 1377 * Net device ops 1378 *****************/ 1379 1380static void team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx) 1381{ 1382 ctx->data.str_val = team->mode->kind; 1383} 1384 1385static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx) 1386{ 1387 return team_change_mode(team, ctx->data.str_val); 1388} 1389 1390static void team_notify_peers_count_get(struct team *team, 1391 struct team_gsetter_ctx *ctx) 1392{ 1393 ctx->data.u32_val = team->notify_peers.count; 1394} 1395 1396static int team_notify_peers_count_set(struct team *team, 1397 struct team_gsetter_ctx *ctx) 1398{ 1399 team->notify_peers.count = ctx->data.u32_val; 1400 return 0; 1401} 1402 1403static void team_notify_peers_interval_get(struct team *team, 1404 struct team_gsetter_ctx *ctx) 1405{ 1406 ctx->data.u32_val = team->notify_peers.interval; 1407} 1408 1409static int team_notify_peers_interval_set(struct team *team, 1410 struct team_gsetter_ctx *ctx) 1411{ 1412 team->notify_peers.interval = ctx->data.u32_val; 1413 return 0; 1414} 1415 1416static void team_mcast_rejoin_count_get(struct team *team, 1417 struct team_gsetter_ctx *ctx) 1418{ 1419 ctx->data.u32_val = team->mcast_rejoin.count; 1420} 1421 1422static int team_mcast_rejoin_count_set(struct team *team, 1423 struct team_gsetter_ctx *ctx) 1424{ 1425 team->mcast_rejoin.count = ctx->data.u32_val; 1426 return 0; 1427} 1428 1429static void team_mcast_rejoin_interval_get(struct team *team, 1430 struct team_gsetter_ctx *ctx) 1431{ 1432 ctx->data.u32_val = team->mcast_rejoin.interval; 1433} 1434 1435static int team_mcast_rejoin_interval_set(struct team *team, 1436 struct team_gsetter_ctx *ctx) 1437{ 1438 team->mcast_rejoin.interval = ctx->data.u32_val; 1439 return 0; 1440} 1441 1442static void team_port_en_option_get(struct team *team, 1443 struct team_gsetter_ctx *ctx) 1444{ 1445 struct team_port *port = ctx->info->port; 1446 1447 ctx->data.bool_val = team_port_enabled(port); 1448} 1449 1450static int team_port_en_option_set(struct team *team, 1451 struct team_gsetter_ctx *ctx) 1452{ 1453 struct team_port *port = ctx->info->port; 1454 1455 if (ctx->data.bool_val) 1456 team_port_enable(team, port); 1457 else 1458 team_port_disable(team, port); 1459 return 0; 1460} 1461 1462static void team_user_linkup_option_get(struct team *team, 1463 struct team_gsetter_ctx *ctx) 1464{ 1465 struct team_port *port = ctx->info->port; 1466 1467 ctx->data.bool_val = port->user.linkup; 1468} 1469 1470static void __team_carrier_check(struct team *team); 1471 1472static int team_user_linkup_option_set(struct team *team, 1473 struct team_gsetter_ctx *ctx) 1474{ 1475 struct team_port *port = ctx->info->port; 1476 1477 port->user.linkup = ctx->data.bool_val; 1478 team_refresh_port_linkup(port); 1479 __team_carrier_check(port->team); 1480 return 0; 1481} 1482 1483static void team_user_linkup_en_option_get(struct team *team, 1484 struct team_gsetter_ctx *ctx) 1485{ 1486 struct team_port *port = ctx->info->port; 1487 1488 ctx->data.bool_val = port->user.linkup_enabled; 1489} 1490 1491static int team_user_linkup_en_option_set(struct team *team, 1492 struct team_gsetter_ctx *ctx) 1493{ 1494 struct team_port *port = ctx->info->port; 1495 1496 port->user.linkup_enabled = ctx->data.bool_val; 1497 team_refresh_port_linkup(port); 1498 __team_carrier_check(port->team); 1499 return 0; 1500} 1501 1502static void team_priority_option_get(struct team *team, 1503 struct team_gsetter_ctx *ctx) 1504{ 1505 struct team_port *port = ctx->info->port; 1506 1507 ctx->data.s32_val = port->priority; 1508} 1509 1510static int team_priority_option_set(struct team *team, 1511 struct team_gsetter_ctx *ctx) 1512{ 1513 struct team_port *port = ctx->info->port; 1514 s32 priority = ctx->data.s32_val; 1515 1516 if (port->priority == priority) 1517 return 0; 1518 port->priority = priority; 1519 team_queue_override_port_prio_changed(team, port); 1520 return 0; 1521} 1522 1523static void team_queue_id_option_get(struct team *team, 1524 struct team_gsetter_ctx *ctx) 1525{ 1526 struct team_port *port = ctx->info->port; 1527 1528 ctx->data.u32_val = port->queue_id; 1529} 1530 1531static int team_queue_id_option_set(struct team *team, 1532 struct team_gsetter_ctx *ctx) 1533{ 1534 struct team_port *port = ctx->info->port; 1535 u16 new_queue_id = ctx->data.u32_val; 1536 1537 if (port->queue_id == new_queue_id) 1538 return 0; 1539 if (new_queue_id >= team->dev->real_num_tx_queues) 1540 return -EINVAL; 1541 team_queue_override_port_change_queue_id(team, port, new_queue_id); 1542 return 0; 1543} 1544 1545static const struct team_option team_options[] = { 1546 { 1547 .name = "mode", 1548 .type = TEAM_OPTION_TYPE_STRING, 1549 .getter = team_mode_option_get, 1550 .setter = team_mode_option_set, 1551 }, 1552 { 1553 .name = "notify_peers_count", 1554 .type = TEAM_OPTION_TYPE_U32, 1555 .getter = team_notify_peers_count_get, 1556 .setter = team_notify_peers_count_set, 1557 }, 1558 { 1559 .name = "notify_peers_interval", 1560 .type = TEAM_OPTION_TYPE_U32, 1561 .getter = team_notify_peers_interval_get, 1562 .setter = team_notify_peers_interval_set, 1563 }, 1564 { 1565 .name = "mcast_rejoin_count", 1566 .type = TEAM_OPTION_TYPE_U32, 1567 .getter = team_mcast_rejoin_count_get, 1568 .setter = team_mcast_rejoin_count_set, 1569 }, 1570 { 1571 .name = "mcast_rejoin_interval", 1572 .type = TEAM_OPTION_TYPE_U32, 1573 .getter = team_mcast_rejoin_interval_get, 1574 .setter = team_mcast_rejoin_interval_set, 1575 }, 1576 { 1577 .name = "enabled", 1578 .type = TEAM_OPTION_TYPE_BOOL, 1579 .per_port = true, 1580 .getter = team_port_en_option_get, 1581 .setter = team_port_en_option_set, 1582 }, 1583 { 1584 .name = "user_linkup", 1585 .type = TEAM_OPTION_TYPE_BOOL, 1586 .per_port = true, 1587 .getter = team_user_linkup_option_get, 1588 .setter = team_user_linkup_option_set, 1589 }, 1590 { 1591 .name = "user_linkup_enabled", 1592 .type = TEAM_OPTION_TYPE_BOOL, 1593 .per_port = true, 1594 .getter = team_user_linkup_en_option_get, 1595 .setter = team_user_linkup_en_option_set, 1596 }, 1597 { 1598 .name = "priority", 1599 .type = TEAM_OPTION_TYPE_S32, 1600 .per_port = true, 1601 .getter = team_priority_option_get, 1602 .setter = team_priority_option_set, 1603 }, 1604 { 1605 .name = "queue_id", 1606 .type = TEAM_OPTION_TYPE_U32, 1607 .per_port = true, 1608 .getter = team_queue_id_option_get, 1609 .setter = team_queue_id_option_set, 1610 }, 1611}; 1612 1613 1614static int team_init(struct net_device *dev) 1615{ 1616 struct team *team = netdev_priv(dev); 1617 int i; 1618 int err; 1619 1620 team->dev = dev; 1621 team_set_no_mode(team); 1622 team->notifier_ctx = false; 1623 1624 team->pcpu_stats = netdev_alloc_pcpu_stats(struct team_pcpu_stats); 1625 if (!team->pcpu_stats) 1626 return -ENOMEM; 1627 1628 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++) 1629 INIT_HLIST_HEAD(&team->en_port_hlist[i]); 1630 INIT_LIST_HEAD(&team->port_list); 1631 err = team_queue_override_init(team); 1632 if (err) 1633 goto err_team_queue_override_init; 1634 1635 team_adjust_ops(team); 1636 1637 INIT_LIST_HEAD(&team->option_list); 1638 INIT_LIST_HEAD(&team->option_inst_list); 1639 1640 team_notify_peers_init(team); 1641 team_mcast_rejoin_init(team); 1642 1643 err = team_options_register(team, team_options, ARRAY_SIZE(team_options)); 1644 if (err) 1645 goto err_options_register; 1646 netif_carrier_off(dev); 1647 1648 lockdep_register_key(&team->team_lock_key); 1649 __mutex_init(&team->lock, "team->team_lock_key", &team->team_lock_key); 1650 netdev_lockdep_set_classes(dev); 1651 1652 return 0; 1653 1654err_options_register: 1655 team_mcast_rejoin_fini(team); 1656 team_notify_peers_fini(team); 1657 team_queue_override_fini(team); 1658err_team_queue_override_init: 1659 free_percpu(team->pcpu_stats); 1660 1661 return err; 1662} 1663 1664static void team_uninit(struct net_device *dev) 1665{ 1666 struct team *team = netdev_priv(dev); 1667 struct team_port *port; 1668 struct team_port *tmp; 1669 1670 mutex_lock(&team->lock); 1671 list_for_each_entry_safe(port, tmp, &team->port_list, list) 1672 team_port_del(team, port->dev); 1673 1674 __team_change_mode(team, NULL); /* cleanup */ 1675 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options)); 1676 team_mcast_rejoin_fini(team); 1677 team_notify_peers_fini(team); 1678 team_queue_override_fini(team); 1679 mutex_unlock(&team->lock); 1680 netdev_change_features(dev); 1681 lockdep_unregister_key(&team->team_lock_key); 1682} 1683 1684static void team_destructor(struct net_device *dev) 1685{ 1686 struct team *team = netdev_priv(dev); 1687 1688 free_percpu(team->pcpu_stats); 1689} 1690 1691static int team_open(struct net_device *dev) 1692{ 1693 return 0; 1694} 1695 1696static int team_close(struct net_device *dev) 1697{ 1698 struct team *team = netdev_priv(dev); 1699 struct team_port *port; 1700 1701 list_for_each_entry(port, &team->port_list, list) { 1702 dev_uc_unsync(port->dev, dev); 1703 dev_mc_unsync(port->dev, dev); 1704 } 1705 1706 return 0; 1707} 1708 1709/* 1710 * note: already called with rcu_read_lock 1711 */ 1712static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev) 1713{ 1714 struct team *team = netdev_priv(dev); 1715 bool tx_success; 1716 unsigned int len = skb->len; 1717 1718 tx_success = team_queue_override_transmit(team, skb); 1719 if (!tx_success) 1720 tx_success = team->ops.transmit(team, skb); 1721 if (tx_success) { 1722 struct team_pcpu_stats *pcpu_stats; 1723 1724 pcpu_stats = this_cpu_ptr(team->pcpu_stats); 1725 u64_stats_update_begin(&pcpu_stats->syncp); 1726 u64_stats_inc(&pcpu_stats->tx_packets); 1727 u64_stats_add(&pcpu_stats->tx_bytes, len); 1728 u64_stats_update_end(&pcpu_stats->syncp); 1729 } else { 1730 this_cpu_inc(team->pcpu_stats->tx_dropped); 1731 } 1732 1733 return NETDEV_TX_OK; 1734} 1735 1736static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb, 1737 struct net_device *sb_dev) 1738{ 1739 /* 1740 * This helper function exists to help dev_pick_tx get the correct 1741 * destination queue. Using a helper function skips a call to 1742 * skb_tx_hash and will put the skbs in the queue we expect on their 1743 * way down to the team driver. 1744 */ 1745 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0; 1746 1747 /* 1748 * Save the original txq to restore before passing to the driver 1749 */ 1750 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping; 1751 1752 if (unlikely(txq >= dev->real_num_tx_queues)) { 1753 do { 1754 txq -= dev->real_num_tx_queues; 1755 } while (txq >= dev->real_num_tx_queues); 1756 } 1757 return txq; 1758} 1759 1760static void team_change_rx_flags(struct net_device *dev, int change) 1761{ 1762 struct team *team = netdev_priv(dev); 1763 struct team_port *port; 1764 int inc; 1765 1766 rcu_read_lock(); 1767 list_for_each_entry_rcu(port, &team->port_list, list) { 1768 if (change & IFF_PROMISC) { 1769 inc = dev->flags & IFF_PROMISC ? 1 : -1; 1770 dev_set_promiscuity(port->dev, inc); 1771 } 1772 if (change & IFF_ALLMULTI) { 1773 inc = dev->flags & IFF_ALLMULTI ? 1 : -1; 1774 dev_set_allmulti(port->dev, inc); 1775 } 1776 } 1777 rcu_read_unlock(); 1778} 1779 1780static void team_set_rx_mode(struct net_device *dev) 1781{ 1782 struct team *team = netdev_priv(dev); 1783 struct team_port *port; 1784 1785 rcu_read_lock(); 1786 list_for_each_entry_rcu(port, &team->port_list, list) { 1787 dev_uc_sync_multiple(port->dev, dev); 1788 dev_mc_sync_multiple(port->dev, dev); 1789 } 1790 rcu_read_unlock(); 1791} 1792 1793static int team_set_mac_address(struct net_device *dev, void *p) 1794{ 1795 struct sockaddr *addr = p; 1796 struct team *team = netdev_priv(dev); 1797 struct team_port *port; 1798 1799 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data)) 1800 return -EADDRNOTAVAIL; 1801 dev_addr_set(dev, addr->sa_data); 1802 mutex_lock(&team->lock); 1803 list_for_each_entry(port, &team->port_list, list) 1804 if (team->ops.port_change_dev_addr) 1805 team->ops.port_change_dev_addr(team, port); 1806 mutex_unlock(&team->lock); 1807 return 0; 1808} 1809 1810static int team_change_mtu(struct net_device *dev, int new_mtu) 1811{ 1812 struct team *team = netdev_priv(dev); 1813 struct team_port *port; 1814 int err; 1815 1816 /* 1817 * Alhough this is reader, it's guarded by team lock. It's not possible 1818 * to traverse list in reverse under rcu_read_lock 1819 */ 1820 mutex_lock(&team->lock); 1821 team->port_mtu_change_allowed = true; 1822 list_for_each_entry(port, &team->port_list, list) { 1823 err = dev_set_mtu(port->dev, new_mtu); 1824 if (err) { 1825 netdev_err(dev, "Device %s failed to change mtu", 1826 port->dev->name); 1827 goto unwind; 1828 } 1829 } 1830 team->port_mtu_change_allowed = false; 1831 mutex_unlock(&team->lock); 1832 1833 dev->mtu = new_mtu; 1834 1835 return 0; 1836 1837unwind: 1838 list_for_each_entry_continue_reverse(port, &team->port_list, list) 1839 dev_set_mtu(port->dev, dev->mtu); 1840 team->port_mtu_change_allowed = false; 1841 mutex_unlock(&team->lock); 1842 1843 return err; 1844} 1845 1846static void 1847team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 1848{ 1849 struct team *team = netdev_priv(dev); 1850 struct team_pcpu_stats *p; 1851 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; 1852 u32 rx_dropped = 0, tx_dropped = 0, rx_nohandler = 0; 1853 unsigned int start; 1854 int i; 1855 1856 for_each_possible_cpu(i) { 1857 p = per_cpu_ptr(team->pcpu_stats, i); 1858 do { 1859 start = u64_stats_fetch_begin(&p->syncp); 1860 rx_packets = u64_stats_read(&p->rx_packets); 1861 rx_bytes = u64_stats_read(&p->rx_bytes); 1862 rx_multicast = u64_stats_read(&p->rx_multicast); 1863 tx_packets = u64_stats_read(&p->tx_packets); 1864 tx_bytes = u64_stats_read(&p->tx_bytes); 1865 } while (u64_stats_fetch_retry(&p->syncp, start)); 1866 1867 stats->rx_packets += rx_packets; 1868 stats->rx_bytes += rx_bytes; 1869 stats->multicast += rx_multicast; 1870 stats->tx_packets += tx_packets; 1871 stats->tx_bytes += tx_bytes; 1872 /* 1873 * rx_dropped, tx_dropped & rx_nohandler are u32, 1874 * updated without syncp protection. 1875 */ 1876 rx_dropped += READ_ONCE(p->rx_dropped); 1877 tx_dropped += READ_ONCE(p->tx_dropped); 1878 rx_nohandler += READ_ONCE(p->rx_nohandler); 1879 } 1880 stats->rx_dropped = rx_dropped; 1881 stats->tx_dropped = tx_dropped; 1882 stats->rx_nohandler = rx_nohandler; 1883} 1884 1885static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) 1886{ 1887 struct team *team = netdev_priv(dev); 1888 struct team_port *port; 1889 int err; 1890 1891 /* 1892 * Alhough this is reader, it's guarded by team lock. It's not possible 1893 * to traverse list in reverse under rcu_read_lock 1894 */ 1895 mutex_lock(&team->lock); 1896 list_for_each_entry(port, &team->port_list, list) { 1897 err = vlan_vid_add(port->dev, proto, vid); 1898 if (err) 1899 goto unwind; 1900 } 1901 mutex_unlock(&team->lock); 1902 1903 return 0; 1904 1905unwind: 1906 list_for_each_entry_continue_reverse(port, &team->port_list, list) 1907 vlan_vid_del(port->dev, proto, vid); 1908 mutex_unlock(&team->lock); 1909 1910 return err; 1911} 1912 1913static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) 1914{ 1915 struct team *team = netdev_priv(dev); 1916 struct team_port *port; 1917 1918 mutex_lock(&team->lock); 1919 list_for_each_entry(port, &team->port_list, list) 1920 vlan_vid_del(port->dev, proto, vid); 1921 mutex_unlock(&team->lock); 1922 1923 return 0; 1924} 1925 1926#ifdef CONFIG_NET_POLL_CONTROLLER 1927static void team_poll_controller(struct net_device *dev) 1928{ 1929} 1930 1931static void __team_netpoll_cleanup(struct team *team) 1932{ 1933 struct team_port *port; 1934 1935 list_for_each_entry(port, &team->port_list, list) 1936 team_port_disable_netpoll(port); 1937} 1938 1939static void team_netpoll_cleanup(struct net_device *dev) 1940{ 1941 struct team *team = netdev_priv(dev); 1942 1943 mutex_lock(&team->lock); 1944 __team_netpoll_cleanup(team); 1945 mutex_unlock(&team->lock); 1946} 1947 1948static int team_netpoll_setup(struct net_device *dev, 1949 struct netpoll_info *npifo) 1950{ 1951 struct team *team = netdev_priv(dev); 1952 struct team_port *port; 1953 int err = 0; 1954 1955 mutex_lock(&team->lock); 1956 list_for_each_entry(port, &team->port_list, list) { 1957 err = __team_port_enable_netpoll(port); 1958 if (err) { 1959 __team_netpoll_cleanup(team); 1960 break; 1961 } 1962 } 1963 mutex_unlock(&team->lock); 1964 return err; 1965} 1966#endif 1967 1968static int team_add_slave(struct net_device *dev, struct net_device *port_dev, 1969 struct netlink_ext_ack *extack) 1970{ 1971 struct team *team = netdev_priv(dev); 1972 int err; 1973 1974 mutex_lock(&team->lock); 1975 err = team_port_add(team, port_dev, extack); 1976 mutex_unlock(&team->lock); 1977 1978 if (!err) 1979 netdev_change_features(dev); 1980 1981 return err; 1982} 1983 1984static int team_del_slave(struct net_device *dev, struct net_device *port_dev) 1985{ 1986 struct team *team = netdev_priv(dev); 1987 int err; 1988 1989 mutex_lock(&team->lock); 1990 err = team_port_del(team, port_dev); 1991 mutex_unlock(&team->lock); 1992 1993 if (err) 1994 return err; 1995 1996 if (netif_is_team_master(port_dev)) { 1997 lockdep_unregister_key(&team->team_lock_key); 1998 lockdep_register_key(&team->team_lock_key); 1999 lockdep_set_class(&team->lock, &team->team_lock_key); 2000 } 2001 netdev_change_features(dev); 2002 2003 return err; 2004} 2005 2006static netdev_features_t team_fix_features(struct net_device *dev, 2007 netdev_features_t features) 2008{ 2009 struct team_port *port; 2010 struct team *team = netdev_priv(dev); 2011 netdev_features_t mask; 2012 2013 mask = features; 2014 features &= ~NETIF_F_ONE_FOR_ALL; 2015 features |= NETIF_F_ALL_FOR_ALL; 2016 2017 rcu_read_lock(); 2018 list_for_each_entry_rcu(port, &team->port_list, list) { 2019 features = netdev_increment_features(features, 2020 port->dev->features, 2021 mask); 2022 } 2023 rcu_read_unlock(); 2024 2025 features = netdev_add_tso_features(features, mask); 2026 2027 return features; 2028} 2029 2030static int team_change_carrier(struct net_device *dev, bool new_carrier) 2031{ 2032 struct team *team = netdev_priv(dev); 2033 2034 team->user_carrier_enabled = true; 2035 2036 if (new_carrier) 2037 netif_carrier_on(dev); 2038 else 2039 netif_carrier_off(dev); 2040 return 0; 2041} 2042 2043static const struct net_device_ops team_netdev_ops = { 2044 .ndo_init = team_init, 2045 .ndo_uninit = team_uninit, 2046 .ndo_open = team_open, 2047 .ndo_stop = team_close, 2048 .ndo_start_xmit = team_xmit, 2049 .ndo_select_queue = team_select_queue, 2050 .ndo_change_rx_flags = team_change_rx_flags, 2051 .ndo_set_rx_mode = team_set_rx_mode, 2052 .ndo_set_mac_address = team_set_mac_address, 2053 .ndo_change_mtu = team_change_mtu, 2054 .ndo_get_stats64 = team_get_stats64, 2055 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid, 2056 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid, 2057#ifdef CONFIG_NET_POLL_CONTROLLER 2058 .ndo_poll_controller = team_poll_controller, 2059 .ndo_netpoll_setup = team_netpoll_setup, 2060 .ndo_netpoll_cleanup = team_netpoll_cleanup, 2061#endif 2062 .ndo_add_slave = team_add_slave, 2063 .ndo_del_slave = team_del_slave, 2064 .ndo_fix_features = team_fix_features, 2065 .ndo_change_carrier = team_change_carrier, 2066 .ndo_features_check = passthru_features_check, 2067}; 2068 2069/*********************** 2070 * ethtool interface 2071 ***********************/ 2072 2073static void team_ethtool_get_drvinfo(struct net_device *dev, 2074 struct ethtool_drvinfo *drvinfo) 2075{ 2076 strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver)); 2077 strscpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version)); 2078} 2079 2080static int team_ethtool_get_link_ksettings(struct net_device *dev, 2081 struct ethtool_link_ksettings *cmd) 2082{ 2083 struct team *team= netdev_priv(dev); 2084 unsigned long speed = 0; 2085 struct team_port *port; 2086 2087 cmd->base.duplex = DUPLEX_UNKNOWN; 2088 cmd->base.port = PORT_OTHER; 2089 2090 rcu_read_lock(); 2091 list_for_each_entry_rcu(port, &team->port_list, list) { 2092 if (team_port_txable(port)) { 2093 if (port->state.speed != SPEED_UNKNOWN) 2094 speed += port->state.speed; 2095 if (cmd->base.duplex == DUPLEX_UNKNOWN && 2096 port->state.duplex != DUPLEX_UNKNOWN) 2097 cmd->base.duplex = port->state.duplex; 2098 } 2099 } 2100 rcu_read_unlock(); 2101 2102 cmd->base.speed = speed ? : SPEED_UNKNOWN; 2103 2104 return 0; 2105} 2106 2107static const struct ethtool_ops team_ethtool_ops = { 2108 .get_drvinfo = team_ethtool_get_drvinfo, 2109 .get_link = ethtool_op_get_link, 2110 .get_link_ksettings = team_ethtool_get_link_ksettings, 2111}; 2112 2113/*********************** 2114 * rt netlink interface 2115 ***********************/ 2116 2117static void team_setup_by_port(struct net_device *dev, 2118 struct net_device *port_dev) 2119{ 2120 struct team *team = netdev_priv(dev); 2121 2122 if (port_dev->type == ARPHRD_ETHER) 2123 dev->header_ops = team->header_ops_cache; 2124 else 2125 dev->header_ops = port_dev->header_ops; 2126 dev->type = port_dev->type; 2127 dev->hard_header_len = port_dev->hard_header_len; 2128 dev->needed_headroom = port_dev->needed_headroom; 2129 dev->addr_len = port_dev->addr_len; 2130 dev->mtu = port_dev->mtu; 2131 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len); 2132 eth_hw_addr_inherit(dev, port_dev); 2133 2134 if (port_dev->flags & IFF_POINTOPOINT) { 2135 dev->flags &= ~(IFF_BROADCAST | IFF_MULTICAST); 2136 dev->flags |= (IFF_POINTOPOINT | IFF_NOARP); 2137 } else if ((port_dev->flags & (IFF_BROADCAST | IFF_MULTICAST)) == 2138 (IFF_BROADCAST | IFF_MULTICAST)) { 2139 dev->flags |= (IFF_BROADCAST | IFF_MULTICAST); 2140 dev->flags &= ~(IFF_POINTOPOINT | IFF_NOARP); 2141 } 2142} 2143 2144static int team_dev_type_check_change(struct net_device *dev, 2145 struct net_device *port_dev) 2146{ 2147 struct team *team = netdev_priv(dev); 2148 char *portname = port_dev->name; 2149 int err; 2150 2151 if (dev->type == port_dev->type) 2152 return 0; 2153 if (!list_empty(&team->port_list)) { 2154 netdev_err(dev, "Device %s is of different type\n", portname); 2155 return -EBUSY; 2156 } 2157 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev); 2158 err = notifier_to_errno(err); 2159 if (err) { 2160 netdev_err(dev, "Refused to change device type\n"); 2161 return err; 2162 } 2163 dev_uc_flush(dev); 2164 dev_mc_flush(dev); 2165 team_setup_by_port(dev, port_dev); 2166 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev); 2167 return 0; 2168} 2169 2170static void team_setup(struct net_device *dev) 2171{ 2172 struct team *team = netdev_priv(dev); 2173 2174 ether_setup(dev); 2175 dev->max_mtu = ETH_MAX_MTU; 2176 team->header_ops_cache = dev->header_ops; 2177 2178 dev->netdev_ops = &team_netdev_ops; 2179 dev->ethtool_ops = &team_ethtool_ops; 2180 dev->needs_free_netdev = true; 2181 dev->priv_destructor = team_destructor; 2182 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); 2183 dev->priv_flags |= IFF_NO_QUEUE; 2184 dev->priv_flags |= IFF_TEAM; 2185 2186 /* 2187 * Indicate we support unicast address filtering. That way core won't 2188 * bring us to promisc mode in case a unicast addr is added. 2189 * Let this up to underlay drivers. 2190 */ 2191 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE; 2192 2193 dev->features |= NETIF_F_LLTX; 2194 dev->features |= NETIF_F_GRO; 2195 2196 /* Don't allow team devices to change network namespaces. */ 2197 dev->features |= NETIF_F_NETNS_LOCAL; 2198 2199 dev->hw_features = TEAM_VLAN_FEATURES | 2200 NETIF_F_HW_VLAN_CTAG_RX | 2201 NETIF_F_HW_VLAN_CTAG_FILTER | 2202 NETIF_F_HW_VLAN_STAG_RX | 2203 NETIF_F_HW_VLAN_STAG_FILTER; 2204 2205 dev->hw_features |= NETIF_F_GSO_ENCAP_ALL; 2206 dev->features |= dev->hw_features; 2207 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX; 2208} 2209 2210static int team_newlink(struct net *src_net, struct net_device *dev, 2211 struct nlattr *tb[], struct nlattr *data[], 2212 struct netlink_ext_ack *extack) 2213{ 2214 if (tb[IFLA_ADDRESS] == NULL) 2215 eth_hw_addr_random(dev); 2216 2217 return register_netdevice(dev); 2218} 2219 2220static int team_validate(struct nlattr *tb[], struct nlattr *data[], 2221 struct netlink_ext_ack *extack) 2222{ 2223 if (tb[IFLA_ADDRESS]) { 2224 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 2225 return -EINVAL; 2226 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 2227 return -EADDRNOTAVAIL; 2228 } 2229 return 0; 2230} 2231 2232static unsigned int team_get_num_tx_queues(void) 2233{ 2234 return TEAM_DEFAULT_NUM_TX_QUEUES; 2235} 2236 2237static unsigned int team_get_num_rx_queues(void) 2238{ 2239 return TEAM_DEFAULT_NUM_RX_QUEUES; 2240} 2241 2242static struct rtnl_link_ops team_link_ops __read_mostly = { 2243 .kind = DRV_NAME, 2244 .priv_size = sizeof(struct team), 2245 .setup = team_setup, 2246 .newlink = team_newlink, 2247 .validate = team_validate, 2248 .get_num_tx_queues = team_get_num_tx_queues, 2249 .get_num_rx_queues = team_get_num_rx_queues, 2250}; 2251 2252 2253/*********************************** 2254 * Generic netlink custom interface 2255 ***********************************/ 2256 2257static struct genl_family team_nl_family; 2258 2259static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = { 2260 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, }, 2261 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 }, 2262 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED }, 2263 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED }, 2264}; 2265 2266static const struct nla_policy 2267team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = { 2268 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, }, 2269 [TEAM_ATTR_OPTION_NAME] = { 2270 .type = NLA_STRING, 2271 .len = TEAM_STRING_MAX_LEN, 2272 }, 2273 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG }, 2274 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 }, 2275 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY }, 2276 [TEAM_ATTR_OPTION_PORT_IFINDEX] = { .type = NLA_U32 }, 2277 [TEAM_ATTR_OPTION_ARRAY_INDEX] = { .type = NLA_U32 }, 2278}; 2279 2280static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info) 2281{ 2282 struct sk_buff *msg; 2283 void *hdr; 2284 int err; 2285 2286 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2287 if (!msg) 2288 return -ENOMEM; 2289 2290 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, 2291 &team_nl_family, 0, TEAM_CMD_NOOP); 2292 if (!hdr) { 2293 err = -EMSGSIZE; 2294 goto err_msg_put; 2295 } 2296 2297 genlmsg_end(msg, hdr); 2298 2299 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid); 2300 2301err_msg_put: 2302 nlmsg_free(msg); 2303 2304 return err; 2305} 2306 2307/* 2308 * Netlink cmd functions should be locked by following two functions. 2309 * Since dev gets held here, that ensures dev won't disappear in between. 2310 */ 2311static struct team *team_nl_team_get(struct genl_info *info) 2312{ 2313 struct net *net = genl_info_net(info); 2314 int ifindex; 2315 struct net_device *dev; 2316 struct team *team; 2317 2318 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX]) 2319 return NULL; 2320 2321 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]); 2322 dev = dev_get_by_index(net, ifindex); 2323 if (!dev || dev->netdev_ops != &team_netdev_ops) { 2324 dev_put(dev); 2325 return NULL; 2326 } 2327 2328 team = netdev_priv(dev); 2329 mutex_lock(&team->lock); 2330 return team; 2331} 2332 2333static void team_nl_team_put(struct team *team) 2334{ 2335 mutex_unlock(&team->lock); 2336 dev_put(team->dev); 2337} 2338 2339typedef int team_nl_send_func_t(struct sk_buff *skb, 2340 struct team *team, u32 portid); 2341 2342static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid) 2343{ 2344 return genlmsg_unicast(dev_net(team->dev), skb, portid); 2345} 2346 2347static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team, 2348 struct team_option_inst *opt_inst) 2349{ 2350 struct nlattr *option_item; 2351 struct team_option *option = opt_inst->option; 2352 struct team_option_inst_info *opt_inst_info = &opt_inst->info; 2353 struct team_gsetter_ctx ctx; 2354 int err; 2355 2356 ctx.info = opt_inst_info; 2357 err = team_option_get(team, opt_inst, &ctx); 2358 if (err) 2359 return err; 2360 2361 option_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_OPTION); 2362 if (!option_item) 2363 return -EMSGSIZE; 2364 2365 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name)) 2366 goto nest_cancel; 2367 if (opt_inst_info->port && 2368 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX, 2369 opt_inst_info->port->dev->ifindex)) 2370 goto nest_cancel; 2371 if (opt_inst->option->array_size && 2372 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX, 2373 opt_inst_info->array_index)) 2374 goto nest_cancel; 2375 2376 switch (option->type) { 2377 case TEAM_OPTION_TYPE_U32: 2378 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32)) 2379 goto nest_cancel; 2380 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val)) 2381 goto nest_cancel; 2382 break; 2383 case TEAM_OPTION_TYPE_STRING: 2384 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING)) 2385 goto nest_cancel; 2386 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA, 2387 ctx.data.str_val)) 2388 goto nest_cancel; 2389 break; 2390 case TEAM_OPTION_TYPE_BINARY: 2391 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY)) 2392 goto nest_cancel; 2393 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len, 2394 ctx.data.bin_val.ptr)) 2395 goto nest_cancel; 2396 break; 2397 case TEAM_OPTION_TYPE_BOOL: 2398 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG)) 2399 goto nest_cancel; 2400 if (ctx.data.bool_val && 2401 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA)) 2402 goto nest_cancel; 2403 break; 2404 case TEAM_OPTION_TYPE_S32: 2405 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32)) 2406 goto nest_cancel; 2407 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val)) 2408 goto nest_cancel; 2409 break; 2410 default: 2411 BUG(); 2412 } 2413 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED)) 2414 goto nest_cancel; 2415 if (opt_inst->changed) { 2416 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED)) 2417 goto nest_cancel; 2418 opt_inst->changed = false; 2419 } 2420 nla_nest_end(skb, option_item); 2421 return 0; 2422 2423nest_cancel: 2424 nla_nest_cancel(skb, option_item); 2425 return -EMSGSIZE; 2426} 2427 2428static int __send_and_alloc_skb(struct sk_buff **pskb, 2429 struct team *team, u32 portid, 2430 team_nl_send_func_t *send_func) 2431{ 2432 int err; 2433 2434 if (*pskb) { 2435 err = send_func(*pskb, team, portid); 2436 if (err) 2437 return err; 2438 } 2439 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); 2440 if (!*pskb) 2441 return -ENOMEM; 2442 return 0; 2443} 2444 2445static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq, 2446 int flags, team_nl_send_func_t *send_func, 2447 struct list_head *sel_opt_inst_list) 2448{ 2449 struct nlattr *option_list; 2450 struct nlmsghdr *nlh; 2451 void *hdr; 2452 struct team_option_inst *opt_inst; 2453 int err; 2454 struct sk_buff *skb = NULL; 2455 bool incomplete; 2456 int i; 2457 2458 opt_inst = list_first_entry(sel_opt_inst_list, 2459 struct team_option_inst, tmp_list); 2460 2461start_again: 2462 err = __send_and_alloc_skb(&skb, team, portid, send_func); 2463 if (err) 2464 return err; 2465 2466 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI, 2467 TEAM_CMD_OPTIONS_GET); 2468 if (!hdr) { 2469 nlmsg_free(skb); 2470 return -EMSGSIZE; 2471 } 2472 2473 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) 2474 goto nla_put_failure; 2475 option_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_OPTION); 2476 if (!option_list) 2477 goto nla_put_failure; 2478 2479 i = 0; 2480 incomplete = false; 2481 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) { 2482 err = team_nl_fill_one_option_get(skb, team, opt_inst); 2483 if (err) { 2484 if (err == -EMSGSIZE) { 2485 if (!i) 2486 goto errout; 2487 incomplete = true; 2488 break; 2489 } 2490 goto errout; 2491 } 2492 i++; 2493 } 2494 2495 nla_nest_end(skb, option_list); 2496 genlmsg_end(skb, hdr); 2497 if (incomplete) 2498 goto start_again; 2499 2500send_done: 2501 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI); 2502 if (!nlh) { 2503 err = __send_and_alloc_skb(&skb, team, portid, send_func); 2504 if (err) 2505 return err; 2506 goto send_done; 2507 } 2508 2509 return send_func(skb, team, portid); 2510 2511nla_put_failure: 2512 err = -EMSGSIZE; 2513errout: 2514 nlmsg_free(skb); 2515 return err; 2516} 2517 2518static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info) 2519{ 2520 struct team *team; 2521 struct team_option_inst *opt_inst; 2522 int err; 2523 LIST_HEAD(sel_opt_inst_list); 2524 2525 team = team_nl_team_get(info); 2526 if (!team) 2527 return -EINVAL; 2528 2529 list_for_each_entry(opt_inst, &team->option_inst_list, list) 2530 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); 2531 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq, 2532 NLM_F_ACK, team_nl_send_unicast, 2533 &sel_opt_inst_list); 2534 2535 team_nl_team_put(team); 2536 2537 return err; 2538} 2539 2540static int team_nl_send_event_options_get(struct team *team, 2541 struct list_head *sel_opt_inst_list); 2542 2543static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info) 2544{ 2545 struct team *team; 2546 int err = 0; 2547 int i; 2548 struct nlattr *nl_option; 2549 2550 rtnl_lock(); 2551 2552 team = team_nl_team_get(info); 2553 if (!team) { 2554 err = -EINVAL; 2555 goto rtnl_unlock; 2556 } 2557 2558 err = -EINVAL; 2559 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) { 2560 err = -EINVAL; 2561 goto team_put; 2562 } 2563 2564 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) { 2565 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1]; 2566 struct nlattr *attr; 2567 struct nlattr *attr_data; 2568 LIST_HEAD(opt_inst_list); 2569 enum team_option_type opt_type; 2570 int opt_port_ifindex = 0; /* != 0 for per-port options */ 2571 u32 opt_array_index = 0; 2572 bool opt_is_array = false; 2573 struct team_option_inst *opt_inst; 2574 char *opt_name; 2575 bool opt_found = false; 2576 2577 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) { 2578 err = -EINVAL; 2579 goto team_put; 2580 } 2581 err = nla_parse_nested_deprecated(opt_attrs, 2582 TEAM_ATTR_OPTION_MAX, 2583 nl_option, 2584 team_nl_option_policy, 2585 info->extack); 2586 if (err) 2587 goto team_put; 2588 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] || 2589 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) { 2590 err = -EINVAL; 2591 goto team_put; 2592 } 2593 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) { 2594 case NLA_U32: 2595 opt_type = TEAM_OPTION_TYPE_U32; 2596 break; 2597 case NLA_STRING: 2598 opt_type = TEAM_OPTION_TYPE_STRING; 2599 break; 2600 case NLA_BINARY: 2601 opt_type = TEAM_OPTION_TYPE_BINARY; 2602 break; 2603 case NLA_FLAG: 2604 opt_type = TEAM_OPTION_TYPE_BOOL; 2605 break; 2606 case NLA_S32: 2607 opt_type = TEAM_OPTION_TYPE_S32; 2608 break; 2609 default: 2610 goto team_put; 2611 } 2612 2613 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA]; 2614 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) { 2615 err = -EINVAL; 2616 goto team_put; 2617 } 2618 2619 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]); 2620 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX]; 2621 if (attr) 2622 opt_port_ifindex = nla_get_u32(attr); 2623 2624 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX]; 2625 if (attr) { 2626 opt_is_array = true; 2627 opt_array_index = nla_get_u32(attr); 2628 } 2629 2630 list_for_each_entry(opt_inst, &team->option_inst_list, list) { 2631 struct team_option *option = opt_inst->option; 2632 struct team_gsetter_ctx ctx; 2633 struct team_option_inst_info *opt_inst_info; 2634 int tmp_ifindex; 2635 2636 opt_inst_info = &opt_inst->info; 2637 tmp_ifindex = opt_inst_info->port ? 2638 opt_inst_info->port->dev->ifindex : 0; 2639 if (option->type != opt_type || 2640 strcmp(option->name, opt_name) || 2641 tmp_ifindex != opt_port_ifindex || 2642 (option->array_size && !opt_is_array) || 2643 opt_inst_info->array_index != opt_array_index) 2644 continue; 2645 opt_found = true; 2646 ctx.info = opt_inst_info; 2647 switch (opt_type) { 2648 case TEAM_OPTION_TYPE_U32: 2649 ctx.data.u32_val = nla_get_u32(attr_data); 2650 break; 2651 case TEAM_OPTION_TYPE_STRING: 2652 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) { 2653 err = -EINVAL; 2654 goto team_put; 2655 } 2656 ctx.data.str_val = nla_data(attr_data); 2657 break; 2658 case TEAM_OPTION_TYPE_BINARY: 2659 ctx.data.bin_val.len = nla_len(attr_data); 2660 ctx.data.bin_val.ptr = nla_data(attr_data); 2661 break; 2662 case TEAM_OPTION_TYPE_BOOL: 2663 ctx.data.bool_val = attr_data ? true : false; 2664 break; 2665 case TEAM_OPTION_TYPE_S32: 2666 ctx.data.s32_val = nla_get_s32(attr_data); 2667 break; 2668 default: 2669 BUG(); 2670 } 2671 err = team_option_set(team, opt_inst, &ctx); 2672 if (err) 2673 goto team_put; 2674 opt_inst->changed = true; 2675 list_add(&opt_inst->tmp_list, &opt_inst_list); 2676 } 2677 if (!opt_found) { 2678 err = -ENOENT; 2679 goto team_put; 2680 } 2681 2682 err = team_nl_send_event_options_get(team, &opt_inst_list); 2683 if (err) 2684 break; 2685 } 2686 2687team_put: 2688 team_nl_team_put(team); 2689rtnl_unlock: 2690 rtnl_unlock(); 2691 return err; 2692} 2693 2694static int team_nl_fill_one_port_get(struct sk_buff *skb, 2695 struct team_port *port) 2696{ 2697 struct nlattr *port_item; 2698 2699 port_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_PORT); 2700 if (!port_item) 2701 goto nest_cancel; 2702 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex)) 2703 goto nest_cancel; 2704 if (port->changed) { 2705 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED)) 2706 goto nest_cancel; 2707 port->changed = false; 2708 } 2709 if ((port->removed && 2710 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) || 2711 (port->state.linkup && 2712 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) || 2713 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) || 2714 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex)) 2715 goto nest_cancel; 2716 nla_nest_end(skb, port_item); 2717 return 0; 2718 2719nest_cancel: 2720 nla_nest_cancel(skb, port_item); 2721 return -EMSGSIZE; 2722} 2723 2724static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq, 2725 int flags, team_nl_send_func_t *send_func, 2726 struct team_port *one_port) 2727{ 2728 struct nlattr *port_list; 2729 struct nlmsghdr *nlh; 2730 void *hdr; 2731 struct team_port *port; 2732 int err; 2733 struct sk_buff *skb = NULL; 2734 bool incomplete; 2735 int i; 2736 2737 port = list_first_entry_or_null(&team->port_list, 2738 struct team_port, list); 2739 2740start_again: 2741 err = __send_and_alloc_skb(&skb, team, portid, send_func); 2742 if (err) 2743 return err; 2744 2745 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI, 2746 TEAM_CMD_PORT_LIST_GET); 2747 if (!hdr) { 2748 nlmsg_free(skb); 2749 return -EMSGSIZE; 2750 } 2751 2752 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) 2753 goto nla_put_failure; 2754 port_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_PORT); 2755 if (!port_list) 2756 goto nla_put_failure; 2757 2758 i = 0; 2759 incomplete = false; 2760 2761 /* If one port is selected, called wants to send port list containing 2762 * only this port. Otherwise go through all listed ports and send all 2763 */ 2764 if (one_port) { 2765 err = team_nl_fill_one_port_get(skb, one_port); 2766 if (err) 2767 goto errout; 2768 } else if (port) { 2769 list_for_each_entry_from(port, &team->port_list, list) { 2770 err = team_nl_fill_one_port_get(skb, port); 2771 if (err) { 2772 if (err == -EMSGSIZE) { 2773 if (!i) 2774 goto errout; 2775 incomplete = true; 2776 break; 2777 } 2778 goto errout; 2779 } 2780 i++; 2781 } 2782 } 2783 2784 nla_nest_end(skb, port_list); 2785 genlmsg_end(skb, hdr); 2786 if (incomplete) 2787 goto start_again; 2788 2789send_done: 2790 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI); 2791 if (!nlh) { 2792 err = __send_and_alloc_skb(&skb, team, portid, send_func); 2793 if (err) 2794 return err; 2795 goto send_done; 2796 } 2797 2798 return send_func(skb, team, portid); 2799 2800nla_put_failure: 2801 err = -EMSGSIZE; 2802errout: 2803 nlmsg_free(skb); 2804 return err; 2805} 2806 2807static int team_nl_cmd_port_list_get(struct sk_buff *skb, 2808 struct genl_info *info) 2809{ 2810 struct team *team; 2811 int err; 2812 2813 team = team_nl_team_get(info); 2814 if (!team) 2815 return -EINVAL; 2816 2817 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq, 2818 NLM_F_ACK, team_nl_send_unicast, NULL); 2819 2820 team_nl_team_put(team); 2821 2822 return err; 2823} 2824 2825static const struct genl_small_ops team_nl_ops[] = { 2826 { 2827 .cmd = TEAM_CMD_NOOP, 2828 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2829 .doit = team_nl_cmd_noop, 2830 }, 2831 { 2832 .cmd = TEAM_CMD_OPTIONS_SET, 2833 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2834 .doit = team_nl_cmd_options_set, 2835 .flags = GENL_ADMIN_PERM, 2836 }, 2837 { 2838 .cmd = TEAM_CMD_OPTIONS_GET, 2839 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2840 .doit = team_nl_cmd_options_get, 2841 .flags = GENL_ADMIN_PERM, 2842 }, 2843 { 2844 .cmd = TEAM_CMD_PORT_LIST_GET, 2845 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2846 .doit = team_nl_cmd_port_list_get, 2847 .flags = GENL_ADMIN_PERM, 2848 }, 2849}; 2850 2851static const struct genl_multicast_group team_nl_mcgrps[] = { 2852 { .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, }, 2853}; 2854 2855static struct genl_family team_nl_family __ro_after_init = { 2856 .name = TEAM_GENL_NAME, 2857 .version = TEAM_GENL_VERSION, 2858 .maxattr = TEAM_ATTR_MAX, 2859 .policy = team_nl_policy, 2860 .netnsok = true, 2861 .module = THIS_MODULE, 2862 .small_ops = team_nl_ops, 2863 .n_small_ops = ARRAY_SIZE(team_nl_ops), 2864 .resv_start_op = TEAM_CMD_PORT_LIST_GET + 1, 2865 .mcgrps = team_nl_mcgrps, 2866 .n_mcgrps = ARRAY_SIZE(team_nl_mcgrps), 2867}; 2868 2869static int team_nl_send_multicast(struct sk_buff *skb, 2870 struct team *team, u32 portid) 2871{ 2872 return genlmsg_multicast_netns(&team_nl_family, dev_net(team->dev), 2873 skb, 0, 0, GFP_KERNEL); 2874} 2875 2876static int team_nl_send_event_options_get(struct team *team, 2877 struct list_head *sel_opt_inst_list) 2878{ 2879 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast, 2880 sel_opt_inst_list); 2881} 2882 2883static int team_nl_send_event_port_get(struct team *team, 2884 struct team_port *port) 2885{ 2886 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast, 2887 port); 2888} 2889 2890static int __init team_nl_init(void) 2891{ 2892 return genl_register_family(&team_nl_family); 2893} 2894 2895static void __exit team_nl_fini(void) 2896{ 2897 genl_unregister_family(&team_nl_family); 2898} 2899 2900 2901/****************** 2902 * Change checkers 2903 ******************/ 2904 2905static void __team_options_change_check(struct team *team) 2906{ 2907 int err; 2908 struct team_option_inst *opt_inst; 2909 LIST_HEAD(sel_opt_inst_list); 2910 2911 list_for_each_entry(opt_inst, &team->option_inst_list, list) { 2912 if (opt_inst->changed) 2913 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); 2914 } 2915 err = team_nl_send_event_options_get(team, &sel_opt_inst_list); 2916 if (err && err != -ESRCH) 2917 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n", 2918 err); 2919} 2920 2921/* rtnl lock is held */ 2922 2923static void __team_port_change_send(struct team_port *port, bool linkup) 2924{ 2925 int err; 2926 2927 port->changed = true; 2928 port->state.linkup = linkup; 2929 team_refresh_port_linkup(port); 2930 if (linkup) { 2931 struct ethtool_link_ksettings ecmd; 2932 2933 err = __ethtool_get_link_ksettings(port->dev, &ecmd); 2934 if (!err) { 2935 port->state.speed = ecmd.base.speed; 2936 port->state.duplex = ecmd.base.duplex; 2937 goto send_event; 2938 } 2939 } 2940 port->state.speed = 0; 2941 port->state.duplex = 0; 2942 2943send_event: 2944 err = team_nl_send_event_port_get(port->team, port); 2945 if (err && err != -ESRCH) 2946 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n", 2947 port->dev->name, err); 2948 2949} 2950 2951static void __team_carrier_check(struct team *team) 2952{ 2953 struct team_port *port; 2954 bool team_linkup; 2955 2956 if (team->user_carrier_enabled) 2957 return; 2958 2959 team_linkup = false; 2960 list_for_each_entry(port, &team->port_list, list) { 2961 if (port->linkup) { 2962 team_linkup = true; 2963 break; 2964 } 2965 } 2966 2967 if (team_linkup) 2968 netif_carrier_on(team->dev); 2969 else 2970 netif_carrier_off(team->dev); 2971} 2972 2973static void __team_port_change_check(struct team_port *port, bool linkup) 2974{ 2975 if (port->state.linkup != linkup) 2976 __team_port_change_send(port, linkup); 2977 __team_carrier_check(port->team); 2978} 2979 2980static void __team_port_change_port_added(struct team_port *port, bool linkup) 2981{ 2982 __team_port_change_send(port, linkup); 2983 __team_carrier_check(port->team); 2984} 2985 2986static void __team_port_change_port_removed(struct team_port *port) 2987{ 2988 port->removed = true; 2989 __team_port_change_send(port, false); 2990 __team_carrier_check(port->team); 2991} 2992 2993static void team_port_change_check(struct team_port *port, bool linkup) 2994{ 2995 struct team *team = port->team; 2996 2997 mutex_lock(&team->lock); 2998 __team_port_change_check(port, linkup); 2999 mutex_unlock(&team->lock); 3000} 3001 3002 3003/************************************ 3004 * Net device notifier event handler 3005 ************************************/ 3006 3007static int team_device_event(struct notifier_block *unused, 3008 unsigned long event, void *ptr) 3009{ 3010 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 3011 struct team_port *port; 3012 3013 port = team_port_get_rtnl(dev); 3014 if (!port) 3015 return NOTIFY_DONE; 3016 3017 switch (event) { 3018 case NETDEV_UP: 3019 if (netif_oper_up(dev)) 3020 team_port_change_check(port, true); 3021 break; 3022 case NETDEV_DOWN: 3023 team_port_change_check(port, false); 3024 break; 3025 case NETDEV_CHANGE: 3026 if (netif_running(port->dev)) 3027 team_port_change_check(port, 3028 !!netif_oper_up(port->dev)); 3029 break; 3030 case NETDEV_UNREGISTER: 3031 team_del_slave(port->team->dev, dev); 3032 break; 3033 case NETDEV_FEAT_CHANGE: 3034 if (!port->team->notifier_ctx) { 3035 port->team->notifier_ctx = true; 3036 team_compute_features(port->team); 3037 port->team->notifier_ctx = false; 3038 } 3039 break; 3040 case NETDEV_PRECHANGEMTU: 3041 /* Forbid to change mtu of underlaying device */ 3042 if (!port->team->port_mtu_change_allowed) 3043 return NOTIFY_BAD; 3044 break; 3045 case NETDEV_PRE_TYPE_CHANGE: 3046 /* Forbid to change type of underlaying device */ 3047 return NOTIFY_BAD; 3048 case NETDEV_RESEND_IGMP: 3049 /* Propagate to master device */ 3050 call_netdevice_notifiers(event, port->team->dev); 3051 break; 3052 } 3053 return NOTIFY_DONE; 3054} 3055 3056static struct notifier_block team_notifier_block __read_mostly = { 3057 .notifier_call = team_device_event, 3058}; 3059 3060 3061/*********************** 3062 * Module init and exit 3063 ***********************/ 3064 3065static int __init team_module_init(void) 3066{ 3067 int err; 3068 3069 register_netdevice_notifier(&team_notifier_block); 3070 3071 err = rtnl_link_register(&team_link_ops); 3072 if (err) 3073 goto err_rtnl_reg; 3074 3075 err = team_nl_init(); 3076 if (err) 3077 goto err_nl_init; 3078 3079 return 0; 3080 3081err_nl_init: 3082 rtnl_link_unregister(&team_link_ops); 3083 3084err_rtnl_reg: 3085 unregister_netdevice_notifier(&team_notifier_block); 3086 3087 return err; 3088} 3089 3090static void __exit team_module_exit(void) 3091{ 3092 team_nl_fini(); 3093 rtnl_link_unregister(&team_link_ops); 3094 unregister_netdevice_notifier(&team_notifier_block); 3095} 3096 3097module_init(team_module_init); 3098module_exit(team_module_exit); 3099 3100MODULE_LICENSE("GPL v2"); 3101MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>"); 3102MODULE_DESCRIPTION("Ethernet team device driver"); 3103MODULE_ALIAS_RTNL_LINK(DRV_NAME); 3104