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/kernel.h> 8 #include <linux/types.h> 9 #include <linux/module.h> 10 #include <linux/init.h> 11 #include <linux/slab.h> 12 #include <linux/rcupdate.h> 13 #include <linux/errno.h> 14 #include <linux/ctype.h> 15 #include <linux/notifier.h> 16 #include <linux/netdevice.h> 17 #include <linux/netpoll.h> 18 #include <linux/if_vlan.h> 19 #include <linux/if_arp.h> 20 #include <linux/socket.h> 21 #include <linux/etherdevice.h> 22 #include <linux/rtnetlink.h> 23 #include <net/rtnetlink.h> 24 #include <net/genetlink.h> 25 #include <net/netlink.h> 26 #include <net/sch_generic.h> 27 #include <generated/utsrelease.h> 28 #include <linux/if_team.h> 29 30 #define DRV_NAME "team" 31 32 33 /********** 34 * Helpers 35 **********/ 36 37 static struct team_port *team_port_get_rtnl(const struct net_device *dev) 38 { 39 struct team_port *port = rtnl_dereference(dev->rx_handler_data); 40 41 return netif_is_team_port(dev) ? port : NULL; 42 } 43 44 /* 45 * Since the ability to change device address for open port device is tested in 46 * team_port_add, this function can be called without control of return value 47 */ 48 static int __set_port_dev_addr(struct net_device *port_dev, 49 const unsigned char *dev_addr) 50 { 51 struct sockaddr_storage addr; 52 53 memcpy(addr.__data, dev_addr, port_dev->addr_len); 54 addr.ss_family = port_dev->type; 55 return dev_set_mac_address(port_dev, (struct sockaddr *)&addr, NULL); 56 } 57 58 static int team_port_set_orig_dev_addr(struct team_port *port) 59 { 60 return __set_port_dev_addr(port->dev, port->orig.dev_addr); 61 } 62 63 static int team_port_set_team_dev_addr(struct team *team, 64 struct team_port *port) 65 { 66 return __set_port_dev_addr(port->dev, team->dev->dev_addr); 67 } 68 69 int team_modeop_port_enter(struct team *team, struct team_port *port) 70 { 71 return team_port_set_team_dev_addr(team, port); 72 } 73 EXPORT_SYMBOL(team_modeop_port_enter); 74 75 void team_modeop_port_change_dev_addr(struct team *team, 76 struct team_port *port) 77 { 78 team_port_set_team_dev_addr(team, port); 79 } 80 EXPORT_SYMBOL(team_modeop_port_change_dev_addr); 81 82 static void team_lower_state_changed(struct team_port *port) 83 { 84 struct netdev_lag_lower_state_info info; 85 86 info.link_up = port->linkup; 87 info.tx_enabled = team_port_enabled(port); 88 netdev_lower_state_changed(port->dev, &info); 89 } 90 91 static void team_refresh_port_linkup(struct team_port *port) 92 { 93 bool new_linkup = port->user.linkup_enabled ? port->user.linkup : 94 port->state.linkup; 95 96 if (port->linkup != new_linkup) { 97 port->linkup = new_linkup; 98 team_lower_state_changed(port); 99 } 100 } 101 102 103 /******************* 104 * Options handling 105 *******************/ 106 107 struct team_option_inst { /* One for each option instance */ 108 struct list_head list; 109 struct list_head tmp_list; 110 struct team_option *option; 111 struct team_option_inst_info info; 112 bool changed; 113 bool removed; 114 }; 115 116 static struct team_option *__team_find_option(struct team *team, 117 const char *opt_name) 118 { 119 struct team_option *option; 120 121 list_for_each_entry(option, &team->option_list, list) { 122 if (strcmp(option->name, opt_name) == 0) 123 return option; 124 } 125 return NULL; 126 } 127 128 static void __team_option_inst_del(struct team_option_inst *opt_inst) 129 { 130 list_del(&opt_inst->list); 131 kfree(opt_inst); 132 } 133 134 static void __team_option_inst_del_option(struct team *team, 135 struct team_option *option) 136 { 137 struct team_option_inst *opt_inst, *tmp; 138 139 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { 140 if (opt_inst->option == option) 141 __team_option_inst_del(opt_inst); 142 } 143 } 144 145 static int __team_option_inst_add(struct team *team, struct team_option *option, 146 struct team_port *port) 147 { 148 struct team_option_inst *opt_inst; 149 unsigned int array_size; 150 unsigned int i; 151 int err; 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 err = option->init(team, &opt_inst->info); 169 if (err) 170 return err; 171 } 172 173 } 174 return 0; 175 } 176 177 static int __team_option_inst_add_option(struct team *team, 178 struct team_option *option) 179 { 180 int err; 181 182 if (!option->per_port) { 183 err = __team_option_inst_add(team, option, NULL); 184 if (err) 185 goto inst_del_option; 186 } 187 return 0; 188 189 inst_del_option: 190 __team_option_inst_del_option(team, option); 191 return err; 192 } 193 194 static void __team_option_inst_mark_removed_option(struct team *team, 195 struct team_option *option) 196 { 197 struct team_option_inst *opt_inst; 198 199 list_for_each_entry(opt_inst, &team->option_inst_list, list) { 200 if (opt_inst->option == option) { 201 opt_inst->changed = true; 202 opt_inst->removed = true; 203 } 204 } 205 } 206 207 static void __team_option_inst_del_port(struct team *team, 208 struct team_port *port) 209 { 210 struct team_option_inst *opt_inst, *tmp; 211 212 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { 213 if (opt_inst->option->per_port && 214 opt_inst->info.port == port) 215 __team_option_inst_del(opt_inst); 216 } 217 } 218 219 static int __team_option_inst_add_port(struct team *team, 220 struct team_port *port) 221 { 222 struct team_option *option; 223 int err; 224 225 list_for_each_entry(option, &team->option_list, list) { 226 if (!option->per_port) 227 continue; 228 err = __team_option_inst_add(team, option, port); 229 if (err) 230 goto inst_del_port; 231 } 232 return 0; 233 234 inst_del_port: 235 __team_option_inst_del_port(team, port); 236 return err; 237 } 238 239 static void __team_option_inst_mark_removed_port(struct team *team, 240 struct team_port *port) 241 { 242 struct team_option_inst *opt_inst; 243 244 list_for_each_entry(opt_inst, &team->option_inst_list, list) { 245 if (opt_inst->info.port == port) { 246 opt_inst->changed = true; 247 opt_inst->removed = true; 248 } 249 } 250 } 251 252 static int __team_options_register(struct team *team, 253 const struct team_option *option, 254 size_t option_count) 255 { 256 int i; 257 struct team_option **dst_opts; 258 int err; 259 260 dst_opts = kcalloc(option_count, sizeof(struct team_option *), 261 GFP_KERNEL); 262 if (!dst_opts) 263 return -ENOMEM; 264 for (i = 0; i < option_count; i++, option++) { 265 if (__team_find_option(team, option->name)) { 266 err = -EEXIST; 267 goto alloc_rollback; 268 } 269 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL); 270 if (!dst_opts[i]) { 271 err = -ENOMEM; 272 goto alloc_rollback; 273 } 274 } 275 276 for (i = 0; i < option_count; i++) { 277 err = __team_option_inst_add_option(team, dst_opts[i]); 278 if (err) 279 goto inst_rollback; 280 list_add_tail(&dst_opts[i]->list, &team->option_list); 281 } 282 283 kfree(dst_opts); 284 return 0; 285 286 inst_rollback: 287 for (i--; i >= 0; i--) 288 __team_option_inst_del_option(team, dst_opts[i]); 289 290 i = option_count; 291 alloc_rollback: 292 for (i--; i >= 0; i--) 293 kfree(dst_opts[i]); 294 295 kfree(dst_opts); 296 return err; 297 } 298 299 static void __team_options_mark_removed(struct team *team, 300 const struct team_option *option, 301 size_t option_count) 302 { 303 int i; 304 305 for (i = 0; i < option_count; i++, option++) { 306 struct team_option *del_opt; 307 308 del_opt = __team_find_option(team, option->name); 309 if (del_opt) 310 __team_option_inst_mark_removed_option(team, del_opt); 311 } 312 } 313 314 static void __team_options_unregister(struct team *team, 315 const struct team_option *option, 316 size_t option_count) 317 { 318 int i; 319 320 for (i = 0; i < option_count; i++, option++) { 321 struct team_option *del_opt; 322 323 del_opt = __team_find_option(team, option->name); 324 if (del_opt) { 325 __team_option_inst_del_option(team, del_opt); 326 list_del(&del_opt->list); 327 kfree(del_opt); 328 } 329 } 330 } 331 332 static void __team_options_change_check(struct team *team); 333 334 int team_options_register(struct team *team, 335 const struct team_option *option, 336 size_t option_count) 337 { 338 int err; 339 340 err = __team_options_register(team, option, option_count); 341 if (err) 342 return err; 343 __team_options_change_check(team); 344 return 0; 345 } 346 EXPORT_SYMBOL(team_options_register); 347 348 void team_options_unregister(struct team *team, 349 const struct team_option *option, 350 size_t option_count) 351 { 352 __team_options_mark_removed(team, option, option_count); 353 __team_options_change_check(team); 354 __team_options_unregister(team, option, option_count); 355 } 356 EXPORT_SYMBOL(team_options_unregister); 357 358 static int team_option_get(struct team *team, 359 struct team_option_inst *opt_inst, 360 struct team_gsetter_ctx *ctx) 361 { 362 if (!opt_inst->option->getter) 363 return -EOPNOTSUPP; 364 return opt_inst->option->getter(team, ctx); 365 } 366 367 static int team_option_set(struct team *team, 368 struct team_option_inst *opt_inst, 369 struct team_gsetter_ctx *ctx) 370 { 371 if (!opt_inst->option->setter) 372 return -EOPNOTSUPP; 373 return opt_inst->option->setter(team, ctx); 374 } 375 376 void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info) 377 { 378 struct team_option_inst *opt_inst; 379 380 opt_inst = container_of(opt_inst_info, struct team_option_inst, info); 381 opt_inst->changed = true; 382 } 383 EXPORT_SYMBOL(team_option_inst_set_change); 384 385 void team_options_change_check(struct team *team) 386 { 387 __team_options_change_check(team); 388 } 389 EXPORT_SYMBOL(team_options_change_check); 390 391 392 /**************** 393 * Mode handling 394 ****************/ 395 396 static LIST_HEAD(mode_list); 397 static DEFINE_SPINLOCK(mode_list_lock); 398 399 struct team_mode_item { 400 struct list_head list; 401 const struct team_mode *mode; 402 }; 403 404 static struct team_mode_item *__find_mode(const char *kind) 405 { 406 struct team_mode_item *mitem; 407 408 list_for_each_entry(mitem, &mode_list, list) { 409 if (strcmp(mitem->mode->kind, kind) == 0) 410 return mitem; 411 } 412 return NULL; 413 } 414 415 static bool is_good_mode_name(const char *name) 416 { 417 while (*name != '\0') { 418 if (!isalpha(*name) && !isdigit(*name) && *name != '_') 419 return false; 420 name++; 421 } 422 return true; 423 } 424 425 int team_mode_register(const struct team_mode *mode) 426 { 427 int err = 0; 428 struct team_mode_item *mitem; 429 430 if (!is_good_mode_name(mode->kind) || 431 mode->priv_size > TEAM_MODE_PRIV_SIZE) 432 return -EINVAL; 433 434 mitem = kmalloc(sizeof(*mitem), GFP_KERNEL); 435 if (!mitem) 436 return -ENOMEM; 437 438 spin_lock(&mode_list_lock); 439 if (__find_mode(mode->kind)) { 440 err = -EEXIST; 441 kfree(mitem); 442 goto unlock; 443 } 444 mitem->mode = mode; 445 list_add_tail(&mitem->list, &mode_list); 446 unlock: 447 spin_unlock(&mode_list_lock); 448 return err; 449 } 450 EXPORT_SYMBOL(team_mode_register); 451 452 void team_mode_unregister(const struct team_mode *mode) 453 { 454 struct team_mode_item *mitem; 455 456 spin_lock(&mode_list_lock); 457 mitem = __find_mode(mode->kind); 458 if (mitem) { 459 list_del_init(&mitem->list); 460 kfree(mitem); 461 } 462 spin_unlock(&mode_list_lock); 463 } 464 EXPORT_SYMBOL(team_mode_unregister); 465 466 static const struct team_mode *team_mode_get(const char *kind) 467 { 468 struct team_mode_item *mitem; 469 const struct team_mode *mode = NULL; 470 471 if (!try_module_get(THIS_MODULE)) 472 return NULL; 473 474 spin_lock(&mode_list_lock); 475 mitem = __find_mode(kind); 476 if (!mitem) { 477 spin_unlock(&mode_list_lock); 478 request_module("team-mode-%s", kind); 479 spin_lock(&mode_list_lock); 480 mitem = __find_mode(kind); 481 } 482 if (mitem) { 483 mode = mitem->mode; 484 if (!try_module_get(mode->owner)) 485 mode = NULL; 486 } 487 488 spin_unlock(&mode_list_lock); 489 module_put(THIS_MODULE); 490 return mode; 491 } 492 493 static void team_mode_put(const struct team_mode *mode) 494 { 495 module_put(mode->owner); 496 } 497 498 static bool team_dummy_transmit(struct team *team, struct sk_buff *skb) 499 { 500 dev_kfree_skb_any(skb); 501 return false; 502 } 503 504 static rx_handler_result_t team_dummy_receive(struct team *team, 505 struct team_port *port, 506 struct sk_buff *skb) 507 { 508 return RX_HANDLER_ANOTHER; 509 } 510 511 static const struct team_mode __team_no_mode = { 512 .kind = "*NOMODE*", 513 }; 514 515 static bool team_is_mode_set(struct team *team) 516 { 517 return team->mode != &__team_no_mode; 518 } 519 520 static void team_set_no_mode(struct team *team) 521 { 522 team->user_carrier_enabled = false; 523 team->mode = &__team_no_mode; 524 } 525 526 static void team_adjust_ops(struct team *team) 527 { 528 /* 529 * To avoid checks in rx/tx skb paths, ensure here that non-null and 530 * correct ops are always set. 531 */ 532 533 if (!team->en_port_count || !team_is_mode_set(team) || 534 !team->mode->ops->transmit) 535 team->ops.transmit = team_dummy_transmit; 536 else 537 team->ops.transmit = team->mode->ops->transmit; 538 539 if (!team->en_port_count || !team_is_mode_set(team) || 540 !team->mode->ops->receive) 541 team->ops.receive = team_dummy_receive; 542 else 543 team->ops.receive = team->mode->ops->receive; 544 } 545 546 /* 547 * We can benefit from the fact that it's ensured no port is present 548 * at the time of mode change. Therefore no packets are in fly so there's no 549 * need to set mode operations in any special way. 550 */ 551 static int __team_change_mode(struct team *team, 552 const struct team_mode *new_mode) 553 { 554 /* Check if mode was previously set and do cleanup if so */ 555 if (team_is_mode_set(team)) { 556 void (*exit_op)(struct team *team) = team->ops.exit; 557 558 /* Clear ops area so no callback is called any longer */ 559 memset(&team->ops, 0, sizeof(struct team_mode_ops)); 560 team_adjust_ops(team); 561 562 if (exit_op) 563 exit_op(team); 564 team_mode_put(team->mode); 565 team_set_no_mode(team); 566 /* zero private data area */ 567 memset(&team->mode_priv, 0, 568 sizeof(struct team) - offsetof(struct team, mode_priv)); 569 } 570 571 if (!new_mode) 572 return 0; 573 574 if (new_mode->ops->init) { 575 int err; 576 577 err = new_mode->ops->init(team); 578 if (err) 579 return err; 580 } 581 582 team->mode = new_mode; 583 memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops)); 584 team_adjust_ops(team); 585 586 return 0; 587 } 588 589 static int team_change_mode(struct team *team, const char *kind) 590 { 591 const struct team_mode *new_mode; 592 struct net_device *dev = team->dev; 593 int err; 594 595 if (!list_empty(&team->port_list)) { 596 netdev_err(dev, "No ports can be present during mode change\n"); 597 return -EBUSY; 598 } 599 600 if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) { 601 netdev_err(dev, "Unable to change to the same mode the team is in\n"); 602 return -EINVAL; 603 } 604 605 new_mode = team_mode_get(kind); 606 if (!new_mode) { 607 netdev_err(dev, "Mode \"%s\" not found\n", kind); 608 return -EINVAL; 609 } 610 611 err = __team_change_mode(team, new_mode); 612 if (err) { 613 netdev_err(dev, "Failed to change to mode \"%s\"\n", kind); 614 team_mode_put(new_mode); 615 return err; 616 } 617 618 netdev_info(dev, "Mode changed to \"%s\"\n", kind); 619 return 0; 620 } 621 622 623 /********************* 624 * Peers notification 625 *********************/ 626 627 static void team_notify_peers_work(struct work_struct *work) 628 { 629 struct team *team; 630 int val; 631 632 team = container_of(work, struct team, notify_peers.dw.work); 633 634 if (!rtnl_trylock()) { 635 schedule_delayed_work(&team->notify_peers.dw, 0); 636 return; 637 } 638 val = atomic_dec_if_positive(&team->notify_peers.count_pending); 639 if (val < 0) { 640 rtnl_unlock(); 641 return; 642 } 643 call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, team->dev); 644 rtnl_unlock(); 645 if (val) 646 schedule_delayed_work(&team->notify_peers.dw, 647 msecs_to_jiffies(team->notify_peers.interval)); 648 } 649 650 static void team_notify_peers(struct team *team) 651 { 652 if (!team->notify_peers.count || !netif_running(team->dev)) 653 return; 654 atomic_add(team->notify_peers.count, &team->notify_peers.count_pending); 655 schedule_delayed_work(&team->notify_peers.dw, 0); 656 } 657 658 static void team_notify_peers_init(struct team *team) 659 { 660 INIT_DELAYED_WORK(&team->notify_peers.dw, team_notify_peers_work); 661 } 662 663 static void team_notify_peers_fini(struct team *team) 664 { 665 cancel_delayed_work_sync(&team->notify_peers.dw); 666 } 667 668 669 /******************************* 670 * Send multicast group rejoins 671 *******************************/ 672 673 static void team_mcast_rejoin_work(struct work_struct *work) 674 { 675 struct team *team; 676 int val; 677 678 team = container_of(work, struct team, mcast_rejoin.dw.work); 679 680 if (!rtnl_trylock()) { 681 schedule_delayed_work(&team->mcast_rejoin.dw, 0); 682 return; 683 } 684 val = atomic_dec_if_positive(&team->mcast_rejoin.count_pending); 685 if (val < 0) { 686 rtnl_unlock(); 687 return; 688 } 689 call_netdevice_notifiers(NETDEV_RESEND_IGMP, team->dev); 690 rtnl_unlock(); 691 if (val) 692 schedule_delayed_work(&team->mcast_rejoin.dw, 693 msecs_to_jiffies(team->mcast_rejoin.interval)); 694 } 695 696 static void team_mcast_rejoin(struct team *team) 697 { 698 if (!team->mcast_rejoin.count || !netif_running(team->dev)) 699 return; 700 atomic_add(team->mcast_rejoin.count, &team->mcast_rejoin.count_pending); 701 schedule_delayed_work(&team->mcast_rejoin.dw, 0); 702 } 703 704 static void team_mcast_rejoin_init(struct team *team) 705 { 706 INIT_DELAYED_WORK(&team->mcast_rejoin.dw, team_mcast_rejoin_work); 707 } 708 709 static void team_mcast_rejoin_fini(struct team *team) 710 { 711 cancel_delayed_work_sync(&team->mcast_rejoin.dw); 712 } 713 714 715 /************************ 716 * Rx path frame handler 717 ************************/ 718 719 /* note: already called with rcu_read_lock */ 720 static rx_handler_result_t team_handle_frame(struct sk_buff **pskb) 721 { 722 struct sk_buff *skb = *pskb; 723 struct team_port *port; 724 struct team *team; 725 rx_handler_result_t res; 726 727 skb = skb_share_check(skb, GFP_ATOMIC); 728 if (!skb) 729 return RX_HANDLER_CONSUMED; 730 731 *pskb = skb; 732 733 port = team_port_get_rcu(skb->dev); 734 team = port->team; 735 if (!team_port_enabled(port)) { 736 /* allow exact match delivery for disabled ports */ 737 res = RX_HANDLER_EXACT; 738 } else { 739 res = team->ops.receive(team, port, skb); 740 } 741 if (res == RX_HANDLER_ANOTHER) { 742 struct team_pcpu_stats *pcpu_stats; 743 744 pcpu_stats = this_cpu_ptr(team->pcpu_stats); 745 u64_stats_update_begin(&pcpu_stats->syncp); 746 pcpu_stats->rx_packets++; 747 pcpu_stats->rx_bytes += skb->len; 748 if (skb->pkt_type == PACKET_MULTICAST) 749 pcpu_stats->rx_multicast++; 750 u64_stats_update_end(&pcpu_stats->syncp); 751 752 skb->dev = team->dev; 753 } else if (res == RX_HANDLER_EXACT) { 754 this_cpu_inc(team->pcpu_stats->rx_nohandler); 755 } else { 756 this_cpu_inc(team->pcpu_stats->rx_dropped); 757 } 758 759 return res; 760 } 761 762 763 /************************************* 764 * Multiqueue Tx port select override 765 *************************************/ 766 767 static int team_queue_override_init(struct team *team) 768 { 769 struct list_head *listarr; 770 unsigned int queue_cnt = team->dev->num_tx_queues - 1; 771 unsigned int i; 772 773 if (!queue_cnt) 774 return 0; 775 listarr = kmalloc_array(queue_cnt, sizeof(struct list_head), 776 GFP_KERNEL); 777 if (!listarr) 778 return -ENOMEM; 779 team->qom_lists = listarr; 780 for (i = 0; i < queue_cnt; i++) 781 INIT_LIST_HEAD(listarr++); 782 return 0; 783 } 784 785 static void team_queue_override_fini(struct team *team) 786 { 787 kfree(team->qom_lists); 788 } 789 790 static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id) 791 { 792 return &team->qom_lists[queue_id - 1]; 793 } 794 795 /* 796 * note: already called with rcu_read_lock 797 */ 798 static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb) 799 { 800 struct list_head *qom_list; 801 struct team_port *port; 802 803 if (!team->queue_override_enabled || !skb->queue_mapping) 804 return false; 805 qom_list = __team_get_qom_list(team, skb->queue_mapping); 806 list_for_each_entry_rcu(port, qom_list, qom_list) { 807 if (!team_dev_queue_xmit(team, port, skb)) 808 return true; 809 } 810 return false; 811 } 812 813 static void __team_queue_override_port_del(struct team *team, 814 struct team_port *port) 815 { 816 if (!port->queue_id) 817 return; 818 list_del_rcu(&port->qom_list); 819 } 820 821 static bool team_queue_override_port_has_gt_prio_than(struct team_port *port, 822 struct team_port *cur) 823 { 824 if (port->priority < cur->priority) 825 return true; 826 if (port->priority > cur->priority) 827 return false; 828 if (port->index < cur->index) 829 return true; 830 return false; 831 } 832 833 static void __team_queue_override_port_add(struct team *team, 834 struct team_port *port) 835 { 836 struct team_port *cur; 837 struct list_head *qom_list; 838 struct list_head *node; 839 840 if (!port->queue_id) 841 return; 842 qom_list = __team_get_qom_list(team, port->queue_id); 843 node = qom_list; 844 list_for_each_entry(cur, qom_list, qom_list) { 845 if (team_queue_override_port_has_gt_prio_than(port, cur)) 846 break; 847 node = &cur->qom_list; 848 } 849 list_add_tail_rcu(&port->qom_list, node); 850 } 851 852 static void __team_queue_override_enabled_check(struct team *team) 853 { 854 struct team_port *port; 855 bool enabled = false; 856 857 list_for_each_entry(port, &team->port_list, list) { 858 if (port->queue_id) { 859 enabled = true; 860 break; 861 } 862 } 863 if (enabled == team->queue_override_enabled) 864 return; 865 netdev_dbg(team->dev, "%s queue override\n", 866 enabled ? "Enabling" : "Disabling"); 867 team->queue_override_enabled = enabled; 868 } 869 870 static void team_queue_override_port_prio_changed(struct team *team, 871 struct team_port *port) 872 { 873 if (!port->queue_id || team_port_enabled(port)) 874 return; 875 __team_queue_override_port_del(team, port); 876 __team_queue_override_port_add(team, port); 877 __team_queue_override_enabled_check(team); 878 } 879 880 static void team_queue_override_port_change_queue_id(struct team *team, 881 struct team_port *port, 882 u16 new_queue_id) 883 { 884 if (team_port_enabled(port)) { 885 __team_queue_override_port_del(team, port); 886 port->queue_id = new_queue_id; 887 __team_queue_override_port_add(team, port); 888 __team_queue_override_enabled_check(team); 889 } else { 890 port->queue_id = new_queue_id; 891 } 892 } 893 894 static void team_queue_override_port_add(struct team *team, 895 struct team_port *port) 896 { 897 __team_queue_override_port_add(team, port); 898 __team_queue_override_enabled_check(team); 899 } 900 901 static void team_queue_override_port_del(struct team *team, 902 struct team_port *port) 903 { 904 __team_queue_override_port_del(team, port); 905 __team_queue_override_enabled_check(team); 906 } 907 908 909 /**************** 910 * Port handling 911 ****************/ 912 913 static bool team_port_find(const struct team *team, 914 const struct team_port *port) 915 { 916 struct team_port *cur; 917 918 list_for_each_entry(cur, &team->port_list, list) 919 if (cur == port) 920 return true; 921 return false; 922 } 923 924 /* 925 * Enable/disable port by adding to enabled port hashlist and setting 926 * port->index (Might be racy so reader could see incorrect ifindex when 927 * processing a flying packet, but that is not a problem). Write guarded 928 * by team->lock. 929 */ 930 static void team_port_enable(struct team *team, 931 struct team_port *port) 932 { 933 if (team_port_enabled(port)) 934 return; 935 port->index = team->en_port_count++; 936 hlist_add_head_rcu(&port->hlist, 937 team_port_index_hash(team, port->index)); 938 team_adjust_ops(team); 939 team_queue_override_port_add(team, port); 940 if (team->ops.port_enabled) 941 team->ops.port_enabled(team, port); 942 team_notify_peers(team); 943 team_mcast_rejoin(team); 944 team_lower_state_changed(port); 945 } 946 947 static void __reconstruct_port_hlist(struct team *team, int rm_index) 948 { 949 int i; 950 struct team_port *port; 951 952 for (i = rm_index + 1; i < team->en_port_count; i++) { 953 port = team_get_port_by_index(team, i); 954 hlist_del_rcu(&port->hlist); 955 port->index--; 956 hlist_add_head_rcu(&port->hlist, 957 team_port_index_hash(team, port->index)); 958 } 959 } 960 961 static void team_port_disable(struct team *team, 962 struct team_port *port) 963 { 964 if (!team_port_enabled(port)) 965 return; 966 if (team->ops.port_disabled) 967 team->ops.port_disabled(team, port); 968 hlist_del_rcu(&port->hlist); 969 __reconstruct_port_hlist(team, port->index); 970 port->index = -1; 971 team->en_port_count--; 972 team_queue_override_port_del(team, port); 973 team_adjust_ops(team); 974 team_lower_state_changed(port); 975 } 976 977 #define TEAM_VLAN_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ 978 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \ 979 NETIF_F_HIGHDMA | NETIF_F_LRO) 980 981 #define TEAM_ENC_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ 982 NETIF_F_RXCSUM | NETIF_F_ALL_TSO) 983 984 static void __team_compute_features(struct team *team) 985 { 986 struct team_port *port; 987 netdev_features_t vlan_features = TEAM_VLAN_FEATURES & 988 NETIF_F_ALL_FOR_ALL; 989 netdev_features_t enc_features = TEAM_ENC_FEATURES; 990 unsigned short max_hard_header_len = ETH_HLEN; 991 unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE | 992 IFF_XMIT_DST_RELEASE_PERM; 993 994 list_for_each_entry(port, &team->port_list, list) { 995 vlan_features = netdev_increment_features(vlan_features, 996 port->dev->vlan_features, 997 TEAM_VLAN_FEATURES); 998 enc_features = 999 netdev_increment_features(enc_features, 1000 port->dev->hw_enc_features, 1001 TEAM_ENC_FEATURES); 1002 1003 1004 dst_release_flag &= port->dev->priv_flags; 1005 if (port->dev->hard_header_len > max_hard_header_len) 1006 max_hard_header_len = port->dev->hard_header_len; 1007 } 1008 1009 team->dev->vlan_features = vlan_features; 1010 team->dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL | 1011 NETIF_F_HW_VLAN_CTAG_TX | 1012 NETIF_F_HW_VLAN_STAG_TX | 1013 NETIF_F_GSO_UDP_L4; 1014 team->dev->hard_header_len = max_hard_header_len; 1015 1016 team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; 1017 if (dst_release_flag == (IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM)) 1018 team->dev->priv_flags |= IFF_XMIT_DST_RELEASE; 1019 } 1020 1021 static void team_compute_features(struct team *team) 1022 { 1023 mutex_lock(&team->lock); 1024 __team_compute_features(team); 1025 mutex_unlock(&team->lock); 1026 netdev_change_features(team->dev); 1027 } 1028 1029 static int team_port_enter(struct team *team, struct team_port *port) 1030 { 1031 int err = 0; 1032 1033 dev_hold(team->dev); 1034 if (team->ops.port_enter) { 1035 err = team->ops.port_enter(team, port); 1036 if (err) { 1037 netdev_err(team->dev, "Device %s failed to enter team mode\n", 1038 port->dev->name); 1039 goto err_port_enter; 1040 } 1041 } 1042 1043 return 0; 1044 1045 err_port_enter: 1046 dev_put(team->dev); 1047 1048 return err; 1049 } 1050 1051 static void team_port_leave(struct team *team, struct team_port *port) 1052 { 1053 if (team->ops.port_leave) 1054 team->ops.port_leave(team, port); 1055 dev_put(team->dev); 1056 } 1057 1058 #ifdef CONFIG_NET_POLL_CONTROLLER 1059 static int __team_port_enable_netpoll(struct team_port *port) 1060 { 1061 struct netpoll *np; 1062 int err; 1063 1064 np = kzalloc(sizeof(*np), GFP_KERNEL); 1065 if (!np) 1066 return -ENOMEM; 1067 1068 err = __netpoll_setup(np, port->dev); 1069 if (err) { 1070 kfree(np); 1071 return err; 1072 } 1073 port->np = np; 1074 return err; 1075 } 1076 1077 static int team_port_enable_netpoll(struct team_port *port) 1078 { 1079 if (!port->team->dev->npinfo) 1080 return 0; 1081 1082 return __team_port_enable_netpoll(port); 1083 } 1084 1085 static void team_port_disable_netpoll(struct team_port *port) 1086 { 1087 struct netpoll *np = port->np; 1088 1089 if (!np) 1090 return; 1091 port->np = NULL; 1092 1093 __netpoll_free(np); 1094 } 1095 #else 1096 static int team_port_enable_netpoll(struct team_port *port) 1097 { 1098 return 0; 1099 } 1100 static void team_port_disable_netpoll(struct team_port *port) 1101 { 1102 } 1103 #endif 1104 1105 static int team_upper_dev_link(struct team *team, struct team_port *port, 1106 struct netlink_ext_ack *extack) 1107 { 1108 struct netdev_lag_upper_info lag_upper_info; 1109 int err; 1110 1111 lag_upper_info.tx_type = team->mode->lag_tx_type; 1112 lag_upper_info.hash_type = NETDEV_LAG_HASH_UNKNOWN; 1113 err = netdev_master_upper_dev_link(port->dev, team->dev, NULL, 1114 &lag_upper_info, extack); 1115 if (err) 1116 return err; 1117 port->dev->priv_flags |= IFF_TEAM_PORT; 1118 return 0; 1119 } 1120 1121 static void team_upper_dev_unlink(struct team *team, struct team_port *port) 1122 { 1123 netdev_upper_dev_unlink(port->dev, team->dev); 1124 port->dev->priv_flags &= ~IFF_TEAM_PORT; 1125 } 1126 1127 static void __team_port_change_port_added(struct team_port *port, bool linkup); 1128 static int team_dev_type_check_change(struct net_device *dev, 1129 struct net_device *port_dev); 1130 1131 static int team_port_add(struct team *team, struct net_device *port_dev, 1132 struct netlink_ext_ack *extack) 1133 { 1134 struct net_device *dev = team->dev; 1135 struct team_port *port; 1136 char *portname = port_dev->name; 1137 int err; 1138 1139 if (port_dev->flags & IFF_LOOPBACK) { 1140 NL_SET_ERR_MSG(extack, "Loopback device can't be added as a team port"); 1141 netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n", 1142 portname); 1143 return -EINVAL; 1144 } 1145 1146 if (netif_is_team_port(port_dev)) { 1147 NL_SET_ERR_MSG(extack, "Device is already a port of a team device"); 1148 netdev_err(dev, "Device %s is already a port " 1149 "of a team device\n", portname); 1150 return -EBUSY; 1151 } 1152 1153 if (dev == port_dev) { 1154 NL_SET_ERR_MSG(extack, "Cannot enslave team device to itself"); 1155 netdev_err(dev, "Cannot enslave team device to itself\n"); 1156 return -EINVAL; 1157 } 1158 1159 if (netdev_has_upper_dev(dev, port_dev)) { 1160 NL_SET_ERR_MSG(extack, "Device is already an upper device of the team interface"); 1161 netdev_err(dev, "Device %s is already an upper device of the team interface\n", 1162 portname); 1163 return -EBUSY; 1164 } 1165 1166 if (port_dev->features & NETIF_F_VLAN_CHALLENGED && 1167 vlan_uses_dev(dev)) { 1168 NL_SET_ERR_MSG(extack, "Device is VLAN challenged and team device has VLAN set up"); 1169 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n", 1170 portname); 1171 return -EPERM; 1172 } 1173 1174 err = team_dev_type_check_change(dev, port_dev); 1175 if (err) 1176 return err; 1177 1178 if (port_dev->flags & IFF_UP) { 1179 NL_SET_ERR_MSG(extack, "Device is up. Set it down before adding it as a team port"); 1180 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n", 1181 portname); 1182 return -EBUSY; 1183 } 1184 1185 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size, 1186 GFP_KERNEL); 1187 if (!port) 1188 return -ENOMEM; 1189 1190 port->dev = port_dev; 1191 port->team = team; 1192 INIT_LIST_HEAD(&port->qom_list); 1193 1194 port->orig.mtu = port_dev->mtu; 1195 err = dev_set_mtu(port_dev, dev->mtu); 1196 if (err) { 1197 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err); 1198 goto err_set_mtu; 1199 } 1200 1201 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len); 1202 1203 err = team_port_enter(team, port); 1204 if (err) { 1205 netdev_err(dev, "Device %s failed to enter team mode\n", 1206 portname); 1207 goto err_port_enter; 1208 } 1209 1210 err = dev_open(port_dev, extack); 1211 if (err) { 1212 netdev_dbg(dev, "Device %s opening failed\n", 1213 portname); 1214 goto err_dev_open; 1215 } 1216 1217 err = vlan_vids_add_by_dev(port_dev, dev); 1218 if (err) { 1219 netdev_err(dev, "Failed to add vlan ids to device %s\n", 1220 portname); 1221 goto err_vids_add; 1222 } 1223 1224 err = team_port_enable_netpoll(port); 1225 if (err) { 1226 netdev_err(dev, "Failed to enable netpoll on device %s\n", 1227 portname); 1228 goto err_enable_netpoll; 1229 } 1230 1231 if (!(dev->features & NETIF_F_LRO)) 1232 dev_disable_lro(port_dev); 1233 1234 err = netdev_rx_handler_register(port_dev, team_handle_frame, 1235 port); 1236 if (err) { 1237 netdev_err(dev, "Device %s failed to register rx_handler\n", 1238 portname); 1239 goto err_handler_register; 1240 } 1241 1242 err = team_upper_dev_link(team, port, extack); 1243 if (err) { 1244 netdev_err(dev, "Device %s failed to set upper link\n", 1245 portname); 1246 goto err_set_upper_link; 1247 } 1248 1249 err = __team_option_inst_add_port(team, port); 1250 if (err) { 1251 netdev_err(dev, "Device %s failed to add per-port options\n", 1252 portname); 1253 goto err_option_port_add; 1254 } 1255 1256 /* set promiscuity level to new slave */ 1257 if (dev->flags & IFF_PROMISC) { 1258 err = dev_set_promiscuity(port_dev, 1); 1259 if (err) 1260 goto err_set_slave_promisc; 1261 } 1262 1263 /* set allmulti level to new slave */ 1264 if (dev->flags & IFF_ALLMULTI) { 1265 err = dev_set_allmulti(port_dev, 1); 1266 if (err) { 1267 if (dev->flags & IFF_PROMISC) 1268 dev_set_promiscuity(port_dev, -1); 1269 goto err_set_slave_promisc; 1270 } 1271 } 1272 1273 netif_addr_lock_bh(dev); 1274 dev_uc_sync_multiple(port_dev, dev); 1275 dev_mc_sync_multiple(port_dev, dev); 1276 netif_addr_unlock_bh(dev); 1277 1278 port->index = -1; 1279 list_add_tail_rcu(&port->list, &team->port_list); 1280 team_port_enable(team, port); 1281 __team_compute_features(team); 1282 __team_port_change_port_added(port, !!netif_oper_up(port_dev)); 1283 __team_options_change_check(team); 1284 1285 netdev_info(dev, "Port device %s added\n", portname); 1286 1287 return 0; 1288 1289 err_set_slave_promisc: 1290 __team_option_inst_del_port(team, port); 1291 1292 err_option_port_add: 1293 team_upper_dev_unlink(team, port); 1294 1295 err_set_upper_link: 1296 netdev_rx_handler_unregister(port_dev); 1297 1298 err_handler_register: 1299 team_port_disable_netpoll(port); 1300 1301 err_enable_netpoll: 1302 vlan_vids_del_by_dev(port_dev, dev); 1303 1304 err_vids_add: 1305 dev_close(port_dev); 1306 1307 err_dev_open: 1308 team_port_leave(team, port); 1309 team_port_set_orig_dev_addr(port); 1310 1311 err_port_enter: 1312 dev_set_mtu(port_dev, port->orig.mtu); 1313 1314 err_set_mtu: 1315 kfree(port); 1316 1317 return err; 1318 } 1319 1320 static void __team_port_change_port_removed(struct team_port *port); 1321 1322 static int team_port_del(struct team *team, struct net_device *port_dev) 1323 { 1324 struct net_device *dev = team->dev; 1325 struct team_port *port; 1326 char *portname = port_dev->name; 1327 1328 port = team_port_get_rtnl(port_dev); 1329 if (!port || !team_port_find(team, port)) { 1330 netdev_err(dev, "Device %s does not act as a port of this team\n", 1331 portname); 1332 return -ENOENT; 1333 } 1334 1335 team_port_disable(team, port); 1336 list_del_rcu(&port->list); 1337 1338 if (dev->flags & IFF_PROMISC) 1339 dev_set_promiscuity(port_dev, -1); 1340 if (dev->flags & IFF_ALLMULTI) 1341 dev_set_allmulti(port_dev, -1); 1342 1343 team_upper_dev_unlink(team, port); 1344 netdev_rx_handler_unregister(port_dev); 1345 team_port_disable_netpoll(port); 1346 vlan_vids_del_by_dev(port_dev, dev); 1347 dev_uc_unsync(port_dev, dev); 1348 dev_mc_unsync(port_dev, dev); 1349 dev_close(port_dev); 1350 team_port_leave(team, port); 1351 1352 __team_option_inst_mark_removed_port(team, port); 1353 __team_options_change_check(team); 1354 __team_option_inst_del_port(team, port); 1355 __team_port_change_port_removed(port); 1356 1357 team_port_set_orig_dev_addr(port); 1358 dev_set_mtu(port_dev, port->orig.mtu); 1359 kfree_rcu(port, rcu); 1360 netdev_info(dev, "Port device %s removed\n", portname); 1361 __team_compute_features(team); 1362 1363 return 0; 1364 } 1365 1366 1367 /***************** 1368 * Net device ops 1369 *****************/ 1370 1371 static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx) 1372 { 1373 ctx->data.str_val = team->mode->kind; 1374 return 0; 1375 } 1376 1377 static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx) 1378 { 1379 return team_change_mode(team, ctx->data.str_val); 1380 } 1381 1382 static int team_notify_peers_count_get(struct team *team, 1383 struct team_gsetter_ctx *ctx) 1384 { 1385 ctx->data.u32_val = team->notify_peers.count; 1386 return 0; 1387 } 1388 1389 static int team_notify_peers_count_set(struct team *team, 1390 struct team_gsetter_ctx *ctx) 1391 { 1392 team->notify_peers.count = ctx->data.u32_val; 1393 return 0; 1394 } 1395 1396 static int team_notify_peers_interval_get(struct team *team, 1397 struct team_gsetter_ctx *ctx) 1398 { 1399 ctx->data.u32_val = team->notify_peers.interval; 1400 return 0; 1401 } 1402 1403 static int team_notify_peers_interval_set(struct team *team, 1404 struct team_gsetter_ctx *ctx) 1405 { 1406 team->notify_peers.interval = ctx->data.u32_val; 1407 return 0; 1408 } 1409 1410 static int team_mcast_rejoin_count_get(struct team *team, 1411 struct team_gsetter_ctx *ctx) 1412 { 1413 ctx->data.u32_val = team->mcast_rejoin.count; 1414 return 0; 1415 } 1416 1417 static int team_mcast_rejoin_count_set(struct team *team, 1418 struct team_gsetter_ctx *ctx) 1419 { 1420 team->mcast_rejoin.count = ctx->data.u32_val; 1421 return 0; 1422 } 1423 1424 static int team_mcast_rejoin_interval_get(struct team *team, 1425 struct team_gsetter_ctx *ctx) 1426 { 1427 ctx->data.u32_val = team->mcast_rejoin.interval; 1428 return 0; 1429 } 1430 1431 static int team_mcast_rejoin_interval_set(struct team *team, 1432 struct team_gsetter_ctx *ctx) 1433 { 1434 team->mcast_rejoin.interval = ctx->data.u32_val; 1435 return 0; 1436 } 1437 1438 static int team_port_en_option_get(struct team *team, 1439 struct team_gsetter_ctx *ctx) 1440 { 1441 struct team_port *port = ctx->info->port; 1442 1443 ctx->data.bool_val = team_port_enabled(port); 1444 return 0; 1445 } 1446 1447 static int team_port_en_option_set(struct team *team, 1448 struct team_gsetter_ctx *ctx) 1449 { 1450 struct team_port *port = ctx->info->port; 1451 1452 if (ctx->data.bool_val) 1453 team_port_enable(team, port); 1454 else 1455 team_port_disable(team, port); 1456 return 0; 1457 } 1458 1459 static int team_user_linkup_option_get(struct team *team, 1460 struct team_gsetter_ctx *ctx) 1461 { 1462 struct team_port *port = ctx->info->port; 1463 1464 ctx->data.bool_val = port->user.linkup; 1465 return 0; 1466 } 1467 1468 static void __team_carrier_check(struct team *team); 1469 1470 static int team_user_linkup_option_set(struct team *team, 1471 struct team_gsetter_ctx *ctx) 1472 { 1473 struct team_port *port = ctx->info->port; 1474 1475 port->user.linkup = ctx->data.bool_val; 1476 team_refresh_port_linkup(port); 1477 __team_carrier_check(port->team); 1478 return 0; 1479 } 1480 1481 static int team_user_linkup_en_option_get(struct team *team, 1482 struct team_gsetter_ctx *ctx) 1483 { 1484 struct team_port *port = ctx->info->port; 1485 1486 ctx->data.bool_val = port->user.linkup_enabled; 1487 return 0; 1488 } 1489 1490 static int team_user_linkup_en_option_set(struct team *team, 1491 struct team_gsetter_ctx *ctx) 1492 { 1493 struct team_port *port = ctx->info->port; 1494 1495 port->user.linkup_enabled = ctx->data.bool_val; 1496 team_refresh_port_linkup(port); 1497 __team_carrier_check(port->team); 1498 return 0; 1499 } 1500 1501 static int team_priority_option_get(struct team *team, 1502 struct team_gsetter_ctx *ctx) 1503 { 1504 struct team_port *port = ctx->info->port; 1505 1506 ctx->data.s32_val = port->priority; 1507 return 0; 1508 } 1509 1510 static 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 1523 static int 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 return 0; 1530 } 1531 1532 static int team_queue_id_option_set(struct team *team, 1533 struct team_gsetter_ctx *ctx) 1534 { 1535 struct team_port *port = ctx->info->port; 1536 u16 new_queue_id = ctx->data.u32_val; 1537 1538 if (port->queue_id == new_queue_id) 1539 return 0; 1540 if (new_queue_id >= team->dev->real_num_tx_queues) 1541 return -EINVAL; 1542 team_queue_override_port_change_queue_id(team, port, new_queue_id); 1543 return 0; 1544 } 1545 1546 static const struct team_option team_options[] = { 1547 { 1548 .name = "mode", 1549 .type = TEAM_OPTION_TYPE_STRING, 1550 .getter = team_mode_option_get, 1551 .setter = team_mode_option_set, 1552 }, 1553 { 1554 .name = "notify_peers_count", 1555 .type = TEAM_OPTION_TYPE_U32, 1556 .getter = team_notify_peers_count_get, 1557 .setter = team_notify_peers_count_set, 1558 }, 1559 { 1560 .name = "notify_peers_interval", 1561 .type = TEAM_OPTION_TYPE_U32, 1562 .getter = team_notify_peers_interval_get, 1563 .setter = team_notify_peers_interval_set, 1564 }, 1565 { 1566 .name = "mcast_rejoin_count", 1567 .type = TEAM_OPTION_TYPE_U32, 1568 .getter = team_mcast_rejoin_count_get, 1569 .setter = team_mcast_rejoin_count_set, 1570 }, 1571 { 1572 .name = "mcast_rejoin_interval", 1573 .type = TEAM_OPTION_TYPE_U32, 1574 .getter = team_mcast_rejoin_interval_get, 1575 .setter = team_mcast_rejoin_interval_set, 1576 }, 1577 { 1578 .name = "enabled", 1579 .type = TEAM_OPTION_TYPE_BOOL, 1580 .per_port = true, 1581 .getter = team_port_en_option_get, 1582 .setter = team_port_en_option_set, 1583 }, 1584 { 1585 .name = "user_linkup", 1586 .type = TEAM_OPTION_TYPE_BOOL, 1587 .per_port = true, 1588 .getter = team_user_linkup_option_get, 1589 .setter = team_user_linkup_option_set, 1590 }, 1591 { 1592 .name = "user_linkup_enabled", 1593 .type = TEAM_OPTION_TYPE_BOOL, 1594 .per_port = true, 1595 .getter = team_user_linkup_en_option_get, 1596 .setter = team_user_linkup_en_option_set, 1597 }, 1598 { 1599 .name = "priority", 1600 .type = TEAM_OPTION_TYPE_S32, 1601 .per_port = true, 1602 .getter = team_priority_option_get, 1603 .setter = team_priority_option_set, 1604 }, 1605 { 1606 .name = "queue_id", 1607 .type = TEAM_OPTION_TYPE_U32, 1608 .per_port = true, 1609 .getter = team_queue_id_option_get, 1610 .setter = team_queue_id_option_set, 1611 }, 1612 }; 1613 1614 1615 static int team_init(struct net_device *dev) 1616 { 1617 struct team *team = netdev_priv(dev); 1618 int i; 1619 int err; 1620 1621 team->dev = dev; 1622 team_set_no_mode(team); 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 1654 err_options_register: 1655 team_mcast_rejoin_fini(team); 1656 team_notify_peers_fini(team); 1657 team_queue_override_fini(team); 1658 err_team_queue_override_init: 1659 free_percpu(team->pcpu_stats); 1660 1661 return err; 1662 } 1663 1664 static 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 1684 static void team_destructor(struct net_device *dev) 1685 { 1686 struct team *team = netdev_priv(dev); 1687 1688 free_percpu(team->pcpu_stats); 1689 } 1690 1691 static int team_open(struct net_device *dev) 1692 { 1693 return 0; 1694 } 1695 1696 static int team_close(struct net_device *dev) 1697 { 1698 return 0; 1699 } 1700 1701 /* 1702 * note: already called with rcu_read_lock 1703 */ 1704 static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev) 1705 { 1706 struct team *team = netdev_priv(dev); 1707 bool tx_success; 1708 unsigned int len = skb->len; 1709 1710 tx_success = team_queue_override_transmit(team, skb); 1711 if (!tx_success) 1712 tx_success = team->ops.transmit(team, skb); 1713 if (tx_success) { 1714 struct team_pcpu_stats *pcpu_stats; 1715 1716 pcpu_stats = this_cpu_ptr(team->pcpu_stats); 1717 u64_stats_update_begin(&pcpu_stats->syncp); 1718 pcpu_stats->tx_packets++; 1719 pcpu_stats->tx_bytes += len; 1720 u64_stats_update_end(&pcpu_stats->syncp); 1721 } else { 1722 this_cpu_inc(team->pcpu_stats->tx_dropped); 1723 } 1724 1725 return NETDEV_TX_OK; 1726 } 1727 1728 static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb, 1729 struct net_device *sb_dev) 1730 { 1731 /* 1732 * This helper function exists to help dev_pick_tx get the correct 1733 * destination queue. Using a helper function skips a call to 1734 * skb_tx_hash and will put the skbs in the queue we expect on their 1735 * way down to the team driver. 1736 */ 1737 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0; 1738 1739 /* 1740 * Save the original txq to restore before passing to the driver 1741 */ 1742 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping; 1743 1744 if (unlikely(txq >= dev->real_num_tx_queues)) { 1745 do { 1746 txq -= dev->real_num_tx_queues; 1747 } while (txq >= dev->real_num_tx_queues); 1748 } 1749 return txq; 1750 } 1751 1752 static void team_change_rx_flags(struct net_device *dev, int change) 1753 { 1754 struct team *team = netdev_priv(dev); 1755 struct team_port *port; 1756 int inc; 1757 1758 rcu_read_lock(); 1759 list_for_each_entry_rcu(port, &team->port_list, list) { 1760 if (change & IFF_PROMISC) { 1761 inc = dev->flags & IFF_PROMISC ? 1 : -1; 1762 dev_set_promiscuity(port->dev, inc); 1763 } 1764 if (change & IFF_ALLMULTI) { 1765 inc = dev->flags & IFF_ALLMULTI ? 1 : -1; 1766 dev_set_allmulti(port->dev, inc); 1767 } 1768 } 1769 rcu_read_unlock(); 1770 } 1771 1772 static void team_set_rx_mode(struct net_device *dev) 1773 { 1774 struct team *team = netdev_priv(dev); 1775 struct team_port *port; 1776 1777 rcu_read_lock(); 1778 list_for_each_entry_rcu(port, &team->port_list, list) { 1779 dev_uc_sync_multiple(port->dev, dev); 1780 dev_mc_sync_multiple(port->dev, dev); 1781 } 1782 rcu_read_unlock(); 1783 } 1784 1785 static int team_set_mac_address(struct net_device *dev, void *p) 1786 { 1787 struct sockaddr *addr = p; 1788 struct team *team = netdev_priv(dev); 1789 struct team_port *port; 1790 1791 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data)) 1792 return -EADDRNOTAVAIL; 1793 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); 1794 mutex_lock(&team->lock); 1795 list_for_each_entry(port, &team->port_list, list) 1796 if (team->ops.port_change_dev_addr) 1797 team->ops.port_change_dev_addr(team, port); 1798 mutex_unlock(&team->lock); 1799 return 0; 1800 } 1801 1802 static int team_change_mtu(struct net_device *dev, int new_mtu) 1803 { 1804 struct team *team = netdev_priv(dev); 1805 struct team_port *port; 1806 int err; 1807 1808 /* 1809 * Alhough this is reader, it's guarded by team lock. It's not possible 1810 * to traverse list in reverse under rcu_read_lock 1811 */ 1812 mutex_lock(&team->lock); 1813 team->port_mtu_change_allowed = true; 1814 list_for_each_entry(port, &team->port_list, list) { 1815 err = dev_set_mtu(port->dev, new_mtu); 1816 if (err) { 1817 netdev_err(dev, "Device %s failed to change mtu", 1818 port->dev->name); 1819 goto unwind; 1820 } 1821 } 1822 team->port_mtu_change_allowed = false; 1823 mutex_unlock(&team->lock); 1824 1825 dev->mtu = new_mtu; 1826 1827 return 0; 1828 1829 unwind: 1830 list_for_each_entry_continue_reverse(port, &team->port_list, list) 1831 dev_set_mtu(port->dev, dev->mtu); 1832 team->port_mtu_change_allowed = false; 1833 mutex_unlock(&team->lock); 1834 1835 return err; 1836 } 1837 1838 static void 1839 team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 1840 { 1841 struct team *team = netdev_priv(dev); 1842 struct team_pcpu_stats *p; 1843 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; 1844 u32 rx_dropped = 0, tx_dropped = 0, rx_nohandler = 0; 1845 unsigned int start; 1846 int i; 1847 1848 for_each_possible_cpu(i) { 1849 p = per_cpu_ptr(team->pcpu_stats, i); 1850 do { 1851 start = u64_stats_fetch_begin_irq(&p->syncp); 1852 rx_packets = p->rx_packets; 1853 rx_bytes = p->rx_bytes; 1854 rx_multicast = p->rx_multicast; 1855 tx_packets = p->tx_packets; 1856 tx_bytes = p->tx_bytes; 1857 } while (u64_stats_fetch_retry_irq(&p->syncp, start)); 1858 1859 stats->rx_packets += rx_packets; 1860 stats->rx_bytes += rx_bytes; 1861 stats->multicast += rx_multicast; 1862 stats->tx_packets += tx_packets; 1863 stats->tx_bytes += tx_bytes; 1864 /* 1865 * rx_dropped, tx_dropped & rx_nohandler are u32, 1866 * updated without syncp protection. 1867 */ 1868 rx_dropped += p->rx_dropped; 1869 tx_dropped += p->tx_dropped; 1870 rx_nohandler += p->rx_nohandler; 1871 } 1872 stats->rx_dropped = rx_dropped; 1873 stats->tx_dropped = tx_dropped; 1874 stats->rx_nohandler = rx_nohandler; 1875 } 1876 1877 static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) 1878 { 1879 struct team *team = netdev_priv(dev); 1880 struct team_port *port; 1881 int err; 1882 1883 /* 1884 * Alhough this is reader, it's guarded by team lock. It's not possible 1885 * to traverse list in reverse under rcu_read_lock 1886 */ 1887 mutex_lock(&team->lock); 1888 list_for_each_entry(port, &team->port_list, list) { 1889 err = vlan_vid_add(port->dev, proto, vid); 1890 if (err) 1891 goto unwind; 1892 } 1893 mutex_unlock(&team->lock); 1894 1895 return 0; 1896 1897 unwind: 1898 list_for_each_entry_continue_reverse(port, &team->port_list, list) 1899 vlan_vid_del(port->dev, proto, vid); 1900 mutex_unlock(&team->lock); 1901 1902 return err; 1903 } 1904 1905 static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) 1906 { 1907 struct team *team = netdev_priv(dev); 1908 struct team_port *port; 1909 1910 mutex_lock(&team->lock); 1911 list_for_each_entry(port, &team->port_list, list) 1912 vlan_vid_del(port->dev, proto, vid); 1913 mutex_unlock(&team->lock); 1914 1915 return 0; 1916 } 1917 1918 #ifdef CONFIG_NET_POLL_CONTROLLER 1919 static void team_poll_controller(struct net_device *dev) 1920 { 1921 } 1922 1923 static void __team_netpoll_cleanup(struct team *team) 1924 { 1925 struct team_port *port; 1926 1927 list_for_each_entry(port, &team->port_list, list) 1928 team_port_disable_netpoll(port); 1929 } 1930 1931 static void team_netpoll_cleanup(struct net_device *dev) 1932 { 1933 struct team *team = netdev_priv(dev); 1934 1935 mutex_lock(&team->lock); 1936 __team_netpoll_cleanup(team); 1937 mutex_unlock(&team->lock); 1938 } 1939 1940 static int team_netpoll_setup(struct net_device *dev, 1941 struct netpoll_info *npifo) 1942 { 1943 struct team *team = netdev_priv(dev); 1944 struct team_port *port; 1945 int err = 0; 1946 1947 mutex_lock(&team->lock); 1948 list_for_each_entry(port, &team->port_list, list) { 1949 err = __team_port_enable_netpoll(port); 1950 if (err) { 1951 __team_netpoll_cleanup(team); 1952 break; 1953 } 1954 } 1955 mutex_unlock(&team->lock); 1956 return err; 1957 } 1958 #endif 1959 1960 static int team_add_slave(struct net_device *dev, struct net_device *port_dev, 1961 struct netlink_ext_ack *extack) 1962 { 1963 struct team *team = netdev_priv(dev); 1964 int err; 1965 1966 mutex_lock(&team->lock); 1967 err = team_port_add(team, port_dev, extack); 1968 mutex_unlock(&team->lock); 1969 1970 if (!err) 1971 netdev_change_features(dev); 1972 1973 return err; 1974 } 1975 1976 static int team_del_slave(struct net_device *dev, struct net_device *port_dev) 1977 { 1978 struct team *team = netdev_priv(dev); 1979 int err; 1980 1981 mutex_lock(&team->lock); 1982 err = team_port_del(team, port_dev); 1983 mutex_unlock(&team->lock); 1984 1985 if (err) 1986 return err; 1987 1988 if (netif_is_team_master(port_dev)) { 1989 lockdep_unregister_key(&team->team_lock_key); 1990 lockdep_register_key(&team->team_lock_key); 1991 lockdep_set_class(&team->lock, &team->team_lock_key); 1992 } 1993 netdev_change_features(dev); 1994 1995 return err; 1996 } 1997 1998 static netdev_features_t team_fix_features(struct net_device *dev, 1999 netdev_features_t features) 2000 { 2001 struct team_port *port; 2002 struct team *team = netdev_priv(dev); 2003 netdev_features_t mask; 2004 2005 mask = features; 2006 features &= ~NETIF_F_ONE_FOR_ALL; 2007 features |= NETIF_F_ALL_FOR_ALL; 2008 2009 rcu_read_lock(); 2010 list_for_each_entry_rcu(port, &team->port_list, list) { 2011 features = netdev_increment_features(features, 2012 port->dev->features, 2013 mask); 2014 } 2015 rcu_read_unlock(); 2016 2017 features = netdev_add_tso_features(features, mask); 2018 2019 return features; 2020 } 2021 2022 static int team_change_carrier(struct net_device *dev, bool new_carrier) 2023 { 2024 struct team *team = netdev_priv(dev); 2025 2026 team->user_carrier_enabled = true; 2027 2028 if (new_carrier) 2029 netif_carrier_on(dev); 2030 else 2031 netif_carrier_off(dev); 2032 return 0; 2033 } 2034 2035 static const struct net_device_ops team_netdev_ops = { 2036 .ndo_init = team_init, 2037 .ndo_uninit = team_uninit, 2038 .ndo_open = team_open, 2039 .ndo_stop = team_close, 2040 .ndo_start_xmit = team_xmit, 2041 .ndo_select_queue = team_select_queue, 2042 .ndo_change_rx_flags = team_change_rx_flags, 2043 .ndo_set_rx_mode = team_set_rx_mode, 2044 .ndo_set_mac_address = team_set_mac_address, 2045 .ndo_change_mtu = team_change_mtu, 2046 .ndo_get_stats64 = team_get_stats64, 2047 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid, 2048 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid, 2049 #ifdef CONFIG_NET_POLL_CONTROLLER 2050 .ndo_poll_controller = team_poll_controller, 2051 .ndo_netpoll_setup = team_netpoll_setup, 2052 .ndo_netpoll_cleanup = team_netpoll_cleanup, 2053 #endif 2054 .ndo_add_slave = team_add_slave, 2055 .ndo_del_slave = team_del_slave, 2056 .ndo_fix_features = team_fix_features, 2057 .ndo_change_carrier = team_change_carrier, 2058 .ndo_features_check = passthru_features_check, 2059 }; 2060 2061 /*********************** 2062 * ethtool interface 2063 ***********************/ 2064 2065 static void team_ethtool_get_drvinfo(struct net_device *dev, 2066 struct ethtool_drvinfo *drvinfo) 2067 { 2068 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver)); 2069 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version)); 2070 } 2071 2072 static int team_ethtool_get_link_ksettings(struct net_device *dev, 2073 struct ethtool_link_ksettings *cmd) 2074 { 2075 struct team *team= netdev_priv(dev); 2076 unsigned long speed = 0; 2077 struct team_port *port; 2078 2079 cmd->base.duplex = DUPLEX_UNKNOWN; 2080 cmd->base.port = PORT_OTHER; 2081 2082 rcu_read_lock(); 2083 list_for_each_entry_rcu(port, &team->port_list, list) { 2084 if (team_port_txable(port)) { 2085 if (port->state.speed != SPEED_UNKNOWN) 2086 speed += port->state.speed; 2087 if (cmd->base.duplex == DUPLEX_UNKNOWN && 2088 port->state.duplex != DUPLEX_UNKNOWN) 2089 cmd->base.duplex = port->state.duplex; 2090 } 2091 } 2092 rcu_read_unlock(); 2093 2094 cmd->base.speed = speed ? : SPEED_UNKNOWN; 2095 2096 return 0; 2097 } 2098 2099 static const struct ethtool_ops team_ethtool_ops = { 2100 .get_drvinfo = team_ethtool_get_drvinfo, 2101 .get_link = ethtool_op_get_link, 2102 .get_link_ksettings = team_ethtool_get_link_ksettings, 2103 }; 2104 2105 /*********************** 2106 * rt netlink interface 2107 ***********************/ 2108 2109 static void team_setup_by_port(struct net_device *dev, 2110 struct net_device *port_dev) 2111 { 2112 dev->header_ops = port_dev->header_ops; 2113 dev->type = port_dev->type; 2114 dev->hard_header_len = port_dev->hard_header_len; 2115 dev->needed_headroom = port_dev->needed_headroom; 2116 dev->addr_len = port_dev->addr_len; 2117 dev->mtu = port_dev->mtu; 2118 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len); 2119 eth_hw_addr_inherit(dev, port_dev); 2120 } 2121 2122 static int team_dev_type_check_change(struct net_device *dev, 2123 struct net_device *port_dev) 2124 { 2125 struct team *team = netdev_priv(dev); 2126 char *portname = port_dev->name; 2127 int err; 2128 2129 if (dev->type == port_dev->type) 2130 return 0; 2131 if (!list_empty(&team->port_list)) { 2132 netdev_err(dev, "Device %s is of different type\n", portname); 2133 return -EBUSY; 2134 } 2135 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev); 2136 err = notifier_to_errno(err); 2137 if (err) { 2138 netdev_err(dev, "Refused to change device type\n"); 2139 return err; 2140 } 2141 dev_uc_flush(dev); 2142 dev_mc_flush(dev); 2143 team_setup_by_port(dev, port_dev); 2144 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev); 2145 return 0; 2146 } 2147 2148 static void team_setup(struct net_device *dev) 2149 { 2150 ether_setup(dev); 2151 dev->max_mtu = ETH_MAX_MTU; 2152 2153 dev->netdev_ops = &team_netdev_ops; 2154 dev->ethtool_ops = &team_ethtool_ops; 2155 dev->needs_free_netdev = true; 2156 dev->priv_destructor = team_destructor; 2157 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); 2158 dev->priv_flags |= IFF_NO_QUEUE; 2159 dev->priv_flags |= IFF_TEAM; 2160 2161 /* 2162 * Indicate we support unicast address filtering. That way core won't 2163 * bring us to promisc mode in case a unicast addr is added. 2164 * Let this up to underlay drivers. 2165 */ 2166 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE; 2167 2168 dev->features |= NETIF_F_LLTX; 2169 dev->features |= NETIF_F_GRO; 2170 2171 /* Don't allow team devices to change network namespaces. */ 2172 dev->features |= NETIF_F_NETNS_LOCAL; 2173 2174 dev->hw_features = TEAM_VLAN_FEATURES | 2175 NETIF_F_HW_VLAN_CTAG_RX | 2176 NETIF_F_HW_VLAN_CTAG_FILTER; 2177 2178 dev->hw_features |= NETIF_F_GSO_ENCAP_ALL | NETIF_F_GSO_UDP_L4; 2179 dev->features |= dev->hw_features; 2180 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX; 2181 } 2182 2183 static int team_newlink(struct net *src_net, struct net_device *dev, 2184 struct nlattr *tb[], struct nlattr *data[], 2185 struct netlink_ext_ack *extack) 2186 { 2187 if (tb[IFLA_ADDRESS] == NULL) 2188 eth_hw_addr_random(dev); 2189 2190 return register_netdevice(dev); 2191 } 2192 2193 static int team_validate(struct nlattr *tb[], struct nlattr *data[], 2194 struct netlink_ext_ack *extack) 2195 { 2196 if (tb[IFLA_ADDRESS]) { 2197 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 2198 return -EINVAL; 2199 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 2200 return -EADDRNOTAVAIL; 2201 } 2202 return 0; 2203 } 2204 2205 static unsigned int team_get_num_tx_queues(void) 2206 { 2207 return TEAM_DEFAULT_NUM_TX_QUEUES; 2208 } 2209 2210 static unsigned int team_get_num_rx_queues(void) 2211 { 2212 return TEAM_DEFAULT_NUM_RX_QUEUES; 2213 } 2214 2215 static struct rtnl_link_ops team_link_ops __read_mostly = { 2216 .kind = DRV_NAME, 2217 .priv_size = sizeof(struct team), 2218 .setup = team_setup, 2219 .newlink = team_newlink, 2220 .validate = team_validate, 2221 .get_num_tx_queues = team_get_num_tx_queues, 2222 .get_num_rx_queues = team_get_num_rx_queues, 2223 }; 2224 2225 2226 /*********************************** 2227 * Generic netlink custom interface 2228 ***********************************/ 2229 2230 static struct genl_family team_nl_family; 2231 2232 static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = { 2233 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, }, 2234 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 }, 2235 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED }, 2236 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED }, 2237 }; 2238 2239 static const struct nla_policy 2240 team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = { 2241 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, }, 2242 [TEAM_ATTR_OPTION_NAME] = { 2243 .type = NLA_STRING, 2244 .len = TEAM_STRING_MAX_LEN, 2245 }, 2246 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG }, 2247 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 }, 2248 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY }, 2249 [TEAM_ATTR_OPTION_PORT_IFINDEX] = { .type = NLA_U32 }, 2250 [TEAM_ATTR_OPTION_ARRAY_INDEX] = { .type = NLA_U32 }, 2251 }; 2252 2253 static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info) 2254 { 2255 struct sk_buff *msg; 2256 void *hdr; 2257 int err; 2258 2259 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2260 if (!msg) 2261 return -ENOMEM; 2262 2263 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, 2264 &team_nl_family, 0, TEAM_CMD_NOOP); 2265 if (!hdr) { 2266 err = -EMSGSIZE; 2267 goto err_msg_put; 2268 } 2269 2270 genlmsg_end(msg, hdr); 2271 2272 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid); 2273 2274 err_msg_put: 2275 nlmsg_free(msg); 2276 2277 return err; 2278 } 2279 2280 /* 2281 * Netlink cmd functions should be locked by following two functions. 2282 * Since dev gets held here, that ensures dev won't disappear in between. 2283 */ 2284 static struct team *team_nl_team_get(struct genl_info *info) 2285 { 2286 struct net *net = genl_info_net(info); 2287 int ifindex; 2288 struct net_device *dev; 2289 struct team *team; 2290 2291 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX]) 2292 return NULL; 2293 2294 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]); 2295 dev = dev_get_by_index(net, ifindex); 2296 if (!dev || dev->netdev_ops != &team_netdev_ops) { 2297 if (dev) 2298 dev_put(dev); 2299 return NULL; 2300 } 2301 2302 team = netdev_priv(dev); 2303 mutex_lock(&team->lock); 2304 return team; 2305 } 2306 2307 static void team_nl_team_put(struct team *team) 2308 { 2309 mutex_unlock(&team->lock); 2310 dev_put(team->dev); 2311 } 2312 2313 typedef int team_nl_send_func_t(struct sk_buff *skb, 2314 struct team *team, u32 portid); 2315 2316 static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid) 2317 { 2318 return genlmsg_unicast(dev_net(team->dev), skb, portid); 2319 } 2320 2321 static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team, 2322 struct team_option_inst *opt_inst) 2323 { 2324 struct nlattr *option_item; 2325 struct team_option *option = opt_inst->option; 2326 struct team_option_inst_info *opt_inst_info = &opt_inst->info; 2327 struct team_gsetter_ctx ctx; 2328 int err; 2329 2330 ctx.info = opt_inst_info; 2331 err = team_option_get(team, opt_inst, &ctx); 2332 if (err) 2333 return err; 2334 2335 option_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_OPTION); 2336 if (!option_item) 2337 return -EMSGSIZE; 2338 2339 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name)) 2340 goto nest_cancel; 2341 if (opt_inst_info->port && 2342 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX, 2343 opt_inst_info->port->dev->ifindex)) 2344 goto nest_cancel; 2345 if (opt_inst->option->array_size && 2346 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX, 2347 opt_inst_info->array_index)) 2348 goto nest_cancel; 2349 2350 switch (option->type) { 2351 case TEAM_OPTION_TYPE_U32: 2352 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32)) 2353 goto nest_cancel; 2354 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val)) 2355 goto nest_cancel; 2356 break; 2357 case TEAM_OPTION_TYPE_STRING: 2358 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING)) 2359 goto nest_cancel; 2360 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA, 2361 ctx.data.str_val)) 2362 goto nest_cancel; 2363 break; 2364 case TEAM_OPTION_TYPE_BINARY: 2365 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY)) 2366 goto nest_cancel; 2367 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len, 2368 ctx.data.bin_val.ptr)) 2369 goto nest_cancel; 2370 break; 2371 case TEAM_OPTION_TYPE_BOOL: 2372 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG)) 2373 goto nest_cancel; 2374 if (ctx.data.bool_val && 2375 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA)) 2376 goto nest_cancel; 2377 break; 2378 case TEAM_OPTION_TYPE_S32: 2379 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32)) 2380 goto nest_cancel; 2381 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val)) 2382 goto nest_cancel; 2383 break; 2384 default: 2385 BUG(); 2386 } 2387 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED)) 2388 goto nest_cancel; 2389 if (opt_inst->changed) { 2390 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED)) 2391 goto nest_cancel; 2392 opt_inst->changed = false; 2393 } 2394 nla_nest_end(skb, option_item); 2395 return 0; 2396 2397 nest_cancel: 2398 nla_nest_cancel(skb, option_item); 2399 return -EMSGSIZE; 2400 } 2401 2402 static int __send_and_alloc_skb(struct sk_buff **pskb, 2403 struct team *team, u32 portid, 2404 team_nl_send_func_t *send_func) 2405 { 2406 int err; 2407 2408 if (*pskb) { 2409 err = send_func(*pskb, team, portid); 2410 if (err) 2411 return err; 2412 } 2413 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); 2414 if (!*pskb) 2415 return -ENOMEM; 2416 return 0; 2417 } 2418 2419 static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq, 2420 int flags, team_nl_send_func_t *send_func, 2421 struct list_head *sel_opt_inst_list) 2422 { 2423 struct nlattr *option_list; 2424 struct nlmsghdr *nlh; 2425 void *hdr; 2426 struct team_option_inst *opt_inst; 2427 int err; 2428 struct sk_buff *skb = NULL; 2429 bool incomplete; 2430 int i; 2431 2432 opt_inst = list_first_entry(sel_opt_inst_list, 2433 struct team_option_inst, tmp_list); 2434 2435 start_again: 2436 err = __send_and_alloc_skb(&skb, team, portid, send_func); 2437 if (err) 2438 return err; 2439 2440 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI, 2441 TEAM_CMD_OPTIONS_GET); 2442 if (!hdr) { 2443 nlmsg_free(skb); 2444 return -EMSGSIZE; 2445 } 2446 2447 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) 2448 goto nla_put_failure; 2449 option_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_OPTION); 2450 if (!option_list) 2451 goto nla_put_failure; 2452 2453 i = 0; 2454 incomplete = false; 2455 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) { 2456 err = team_nl_fill_one_option_get(skb, team, opt_inst); 2457 if (err) { 2458 if (err == -EMSGSIZE) { 2459 if (!i) 2460 goto errout; 2461 incomplete = true; 2462 break; 2463 } 2464 goto errout; 2465 } 2466 i++; 2467 } 2468 2469 nla_nest_end(skb, option_list); 2470 genlmsg_end(skb, hdr); 2471 if (incomplete) 2472 goto start_again; 2473 2474 send_done: 2475 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI); 2476 if (!nlh) { 2477 err = __send_and_alloc_skb(&skb, team, portid, send_func); 2478 if (err) 2479 return err; 2480 goto send_done; 2481 } 2482 2483 return send_func(skb, team, portid); 2484 2485 nla_put_failure: 2486 err = -EMSGSIZE; 2487 errout: 2488 nlmsg_free(skb); 2489 return err; 2490 } 2491 2492 static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info) 2493 { 2494 struct team *team; 2495 struct team_option_inst *opt_inst; 2496 int err; 2497 LIST_HEAD(sel_opt_inst_list); 2498 2499 team = team_nl_team_get(info); 2500 if (!team) 2501 return -EINVAL; 2502 2503 list_for_each_entry(opt_inst, &team->option_inst_list, list) 2504 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); 2505 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq, 2506 NLM_F_ACK, team_nl_send_unicast, 2507 &sel_opt_inst_list); 2508 2509 team_nl_team_put(team); 2510 2511 return err; 2512 } 2513 2514 static int team_nl_send_event_options_get(struct team *team, 2515 struct list_head *sel_opt_inst_list); 2516 2517 static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info) 2518 { 2519 struct team *team; 2520 int err = 0; 2521 int i; 2522 struct nlattr *nl_option; 2523 2524 rtnl_lock(); 2525 2526 team = team_nl_team_get(info); 2527 if (!team) { 2528 err = -EINVAL; 2529 goto rtnl_unlock; 2530 } 2531 2532 err = -EINVAL; 2533 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) { 2534 err = -EINVAL; 2535 goto team_put; 2536 } 2537 2538 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) { 2539 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1]; 2540 struct nlattr *attr; 2541 struct nlattr *attr_data; 2542 LIST_HEAD(opt_inst_list); 2543 enum team_option_type opt_type; 2544 int opt_port_ifindex = 0; /* != 0 for per-port options */ 2545 u32 opt_array_index = 0; 2546 bool opt_is_array = false; 2547 struct team_option_inst *opt_inst; 2548 char *opt_name; 2549 bool opt_found = false; 2550 2551 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) { 2552 err = -EINVAL; 2553 goto team_put; 2554 } 2555 err = nla_parse_nested_deprecated(opt_attrs, 2556 TEAM_ATTR_OPTION_MAX, 2557 nl_option, 2558 team_nl_option_policy, 2559 info->extack); 2560 if (err) 2561 goto team_put; 2562 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] || 2563 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) { 2564 err = -EINVAL; 2565 goto team_put; 2566 } 2567 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) { 2568 case NLA_U32: 2569 opt_type = TEAM_OPTION_TYPE_U32; 2570 break; 2571 case NLA_STRING: 2572 opt_type = TEAM_OPTION_TYPE_STRING; 2573 break; 2574 case NLA_BINARY: 2575 opt_type = TEAM_OPTION_TYPE_BINARY; 2576 break; 2577 case NLA_FLAG: 2578 opt_type = TEAM_OPTION_TYPE_BOOL; 2579 break; 2580 case NLA_S32: 2581 opt_type = TEAM_OPTION_TYPE_S32; 2582 break; 2583 default: 2584 goto team_put; 2585 } 2586 2587 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA]; 2588 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) { 2589 err = -EINVAL; 2590 goto team_put; 2591 } 2592 2593 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]); 2594 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX]; 2595 if (attr) 2596 opt_port_ifindex = nla_get_u32(attr); 2597 2598 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX]; 2599 if (attr) { 2600 opt_is_array = true; 2601 opt_array_index = nla_get_u32(attr); 2602 } 2603 2604 list_for_each_entry(opt_inst, &team->option_inst_list, list) { 2605 struct team_option *option = opt_inst->option; 2606 struct team_gsetter_ctx ctx; 2607 struct team_option_inst_info *opt_inst_info; 2608 int tmp_ifindex; 2609 2610 opt_inst_info = &opt_inst->info; 2611 tmp_ifindex = opt_inst_info->port ? 2612 opt_inst_info->port->dev->ifindex : 0; 2613 if (option->type != opt_type || 2614 strcmp(option->name, opt_name) || 2615 tmp_ifindex != opt_port_ifindex || 2616 (option->array_size && !opt_is_array) || 2617 opt_inst_info->array_index != opt_array_index) 2618 continue; 2619 opt_found = true; 2620 ctx.info = opt_inst_info; 2621 switch (opt_type) { 2622 case TEAM_OPTION_TYPE_U32: 2623 ctx.data.u32_val = nla_get_u32(attr_data); 2624 break; 2625 case TEAM_OPTION_TYPE_STRING: 2626 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) { 2627 err = -EINVAL; 2628 goto team_put; 2629 } 2630 ctx.data.str_val = nla_data(attr_data); 2631 break; 2632 case TEAM_OPTION_TYPE_BINARY: 2633 ctx.data.bin_val.len = nla_len(attr_data); 2634 ctx.data.bin_val.ptr = nla_data(attr_data); 2635 break; 2636 case TEAM_OPTION_TYPE_BOOL: 2637 ctx.data.bool_val = attr_data ? true : false; 2638 break; 2639 case TEAM_OPTION_TYPE_S32: 2640 ctx.data.s32_val = nla_get_s32(attr_data); 2641 break; 2642 default: 2643 BUG(); 2644 } 2645 err = team_option_set(team, opt_inst, &ctx); 2646 if (err) 2647 goto team_put; 2648 opt_inst->changed = true; 2649 list_add(&opt_inst->tmp_list, &opt_inst_list); 2650 } 2651 if (!opt_found) { 2652 err = -ENOENT; 2653 goto team_put; 2654 } 2655 2656 err = team_nl_send_event_options_get(team, &opt_inst_list); 2657 if (err) 2658 break; 2659 } 2660 2661 team_put: 2662 team_nl_team_put(team); 2663 rtnl_unlock: 2664 rtnl_unlock(); 2665 return err; 2666 } 2667 2668 static int team_nl_fill_one_port_get(struct sk_buff *skb, 2669 struct team_port *port) 2670 { 2671 struct nlattr *port_item; 2672 2673 port_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_PORT); 2674 if (!port_item) 2675 goto nest_cancel; 2676 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex)) 2677 goto nest_cancel; 2678 if (port->changed) { 2679 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED)) 2680 goto nest_cancel; 2681 port->changed = false; 2682 } 2683 if ((port->removed && 2684 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) || 2685 (port->state.linkup && 2686 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) || 2687 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) || 2688 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex)) 2689 goto nest_cancel; 2690 nla_nest_end(skb, port_item); 2691 return 0; 2692 2693 nest_cancel: 2694 nla_nest_cancel(skb, port_item); 2695 return -EMSGSIZE; 2696 } 2697 2698 static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq, 2699 int flags, team_nl_send_func_t *send_func, 2700 struct team_port *one_port) 2701 { 2702 struct nlattr *port_list; 2703 struct nlmsghdr *nlh; 2704 void *hdr; 2705 struct team_port *port; 2706 int err; 2707 struct sk_buff *skb = NULL; 2708 bool incomplete; 2709 int i; 2710 2711 port = list_first_entry_or_null(&team->port_list, 2712 struct team_port, list); 2713 2714 start_again: 2715 err = __send_and_alloc_skb(&skb, team, portid, send_func); 2716 if (err) 2717 return err; 2718 2719 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI, 2720 TEAM_CMD_PORT_LIST_GET); 2721 if (!hdr) { 2722 nlmsg_free(skb); 2723 return -EMSGSIZE; 2724 } 2725 2726 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) 2727 goto nla_put_failure; 2728 port_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_PORT); 2729 if (!port_list) 2730 goto nla_put_failure; 2731 2732 i = 0; 2733 incomplete = false; 2734 2735 /* If one port is selected, called wants to send port list containing 2736 * only this port. Otherwise go through all listed ports and send all 2737 */ 2738 if (one_port) { 2739 err = team_nl_fill_one_port_get(skb, one_port); 2740 if (err) 2741 goto errout; 2742 } else if (port) { 2743 list_for_each_entry_from(port, &team->port_list, list) { 2744 err = team_nl_fill_one_port_get(skb, port); 2745 if (err) { 2746 if (err == -EMSGSIZE) { 2747 if (!i) 2748 goto errout; 2749 incomplete = true; 2750 break; 2751 } 2752 goto errout; 2753 } 2754 i++; 2755 } 2756 } 2757 2758 nla_nest_end(skb, port_list); 2759 genlmsg_end(skb, hdr); 2760 if (incomplete) 2761 goto start_again; 2762 2763 send_done: 2764 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI); 2765 if (!nlh) { 2766 err = __send_and_alloc_skb(&skb, team, portid, send_func); 2767 if (err) 2768 return err; 2769 goto send_done; 2770 } 2771 2772 return send_func(skb, team, portid); 2773 2774 nla_put_failure: 2775 err = -EMSGSIZE; 2776 errout: 2777 nlmsg_free(skb); 2778 return err; 2779 } 2780 2781 static int team_nl_cmd_port_list_get(struct sk_buff *skb, 2782 struct genl_info *info) 2783 { 2784 struct team *team; 2785 int err; 2786 2787 team = team_nl_team_get(info); 2788 if (!team) 2789 return -EINVAL; 2790 2791 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq, 2792 NLM_F_ACK, team_nl_send_unicast, NULL); 2793 2794 team_nl_team_put(team); 2795 2796 return err; 2797 } 2798 2799 static const struct genl_small_ops team_nl_ops[] = { 2800 { 2801 .cmd = TEAM_CMD_NOOP, 2802 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2803 .doit = team_nl_cmd_noop, 2804 }, 2805 { 2806 .cmd = TEAM_CMD_OPTIONS_SET, 2807 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2808 .doit = team_nl_cmd_options_set, 2809 .flags = GENL_ADMIN_PERM, 2810 }, 2811 { 2812 .cmd = TEAM_CMD_OPTIONS_GET, 2813 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2814 .doit = team_nl_cmd_options_get, 2815 .flags = GENL_ADMIN_PERM, 2816 }, 2817 { 2818 .cmd = TEAM_CMD_PORT_LIST_GET, 2819 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 2820 .doit = team_nl_cmd_port_list_get, 2821 .flags = GENL_ADMIN_PERM, 2822 }, 2823 }; 2824 2825 static const struct genl_multicast_group team_nl_mcgrps[] = { 2826 { .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, }, 2827 }; 2828 2829 static struct genl_family team_nl_family __ro_after_init = { 2830 .name = TEAM_GENL_NAME, 2831 .version = TEAM_GENL_VERSION, 2832 .maxattr = TEAM_ATTR_MAX, 2833 .policy = team_nl_policy, 2834 .netnsok = true, 2835 .module = THIS_MODULE, 2836 .small_ops = team_nl_ops, 2837 .n_small_ops = ARRAY_SIZE(team_nl_ops), 2838 .mcgrps = team_nl_mcgrps, 2839 .n_mcgrps = ARRAY_SIZE(team_nl_mcgrps), 2840 }; 2841 2842 static int team_nl_send_multicast(struct sk_buff *skb, 2843 struct team *team, u32 portid) 2844 { 2845 return genlmsg_multicast_netns(&team_nl_family, dev_net(team->dev), 2846 skb, 0, 0, GFP_KERNEL); 2847 } 2848 2849 static int team_nl_send_event_options_get(struct team *team, 2850 struct list_head *sel_opt_inst_list) 2851 { 2852 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast, 2853 sel_opt_inst_list); 2854 } 2855 2856 static int team_nl_send_event_port_get(struct team *team, 2857 struct team_port *port) 2858 { 2859 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast, 2860 port); 2861 } 2862 2863 static int __init team_nl_init(void) 2864 { 2865 return genl_register_family(&team_nl_family); 2866 } 2867 2868 static void team_nl_fini(void) 2869 { 2870 genl_unregister_family(&team_nl_family); 2871 } 2872 2873 2874 /****************** 2875 * Change checkers 2876 ******************/ 2877 2878 static void __team_options_change_check(struct team *team) 2879 { 2880 int err; 2881 struct team_option_inst *opt_inst; 2882 LIST_HEAD(sel_opt_inst_list); 2883 2884 list_for_each_entry(opt_inst, &team->option_inst_list, list) { 2885 if (opt_inst->changed) 2886 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); 2887 } 2888 err = team_nl_send_event_options_get(team, &sel_opt_inst_list); 2889 if (err && err != -ESRCH) 2890 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n", 2891 err); 2892 } 2893 2894 /* rtnl lock is held */ 2895 2896 static void __team_port_change_send(struct team_port *port, bool linkup) 2897 { 2898 int err; 2899 2900 port->changed = true; 2901 port->state.linkup = linkup; 2902 team_refresh_port_linkup(port); 2903 if (linkup) { 2904 struct ethtool_link_ksettings ecmd; 2905 2906 err = __ethtool_get_link_ksettings(port->dev, &ecmd); 2907 if (!err) { 2908 port->state.speed = ecmd.base.speed; 2909 port->state.duplex = ecmd.base.duplex; 2910 goto send_event; 2911 } 2912 } 2913 port->state.speed = 0; 2914 port->state.duplex = 0; 2915 2916 send_event: 2917 err = team_nl_send_event_port_get(port->team, port); 2918 if (err && err != -ESRCH) 2919 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n", 2920 port->dev->name, err); 2921 2922 } 2923 2924 static void __team_carrier_check(struct team *team) 2925 { 2926 struct team_port *port; 2927 bool team_linkup; 2928 2929 if (team->user_carrier_enabled) 2930 return; 2931 2932 team_linkup = false; 2933 list_for_each_entry(port, &team->port_list, list) { 2934 if (port->linkup) { 2935 team_linkup = true; 2936 break; 2937 } 2938 } 2939 2940 if (team_linkup) 2941 netif_carrier_on(team->dev); 2942 else 2943 netif_carrier_off(team->dev); 2944 } 2945 2946 static void __team_port_change_check(struct team_port *port, bool linkup) 2947 { 2948 if (port->state.linkup != linkup) 2949 __team_port_change_send(port, linkup); 2950 __team_carrier_check(port->team); 2951 } 2952 2953 static void __team_port_change_port_added(struct team_port *port, bool linkup) 2954 { 2955 __team_port_change_send(port, linkup); 2956 __team_carrier_check(port->team); 2957 } 2958 2959 static void __team_port_change_port_removed(struct team_port *port) 2960 { 2961 port->removed = true; 2962 __team_port_change_send(port, false); 2963 __team_carrier_check(port->team); 2964 } 2965 2966 static void team_port_change_check(struct team_port *port, bool linkup) 2967 { 2968 struct team *team = port->team; 2969 2970 mutex_lock(&team->lock); 2971 __team_port_change_check(port, linkup); 2972 mutex_unlock(&team->lock); 2973 } 2974 2975 2976 /************************************ 2977 * Net device notifier event handler 2978 ************************************/ 2979 2980 static int team_device_event(struct notifier_block *unused, 2981 unsigned long event, void *ptr) 2982 { 2983 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 2984 struct team_port *port; 2985 2986 port = team_port_get_rtnl(dev); 2987 if (!port) 2988 return NOTIFY_DONE; 2989 2990 switch (event) { 2991 case NETDEV_UP: 2992 if (netif_oper_up(dev)) 2993 team_port_change_check(port, true); 2994 break; 2995 case NETDEV_DOWN: 2996 team_port_change_check(port, false); 2997 break; 2998 case NETDEV_CHANGE: 2999 if (netif_running(port->dev)) 3000 team_port_change_check(port, 3001 !!netif_oper_up(port->dev)); 3002 break; 3003 case NETDEV_UNREGISTER: 3004 team_del_slave(port->team->dev, dev); 3005 break; 3006 case NETDEV_FEAT_CHANGE: 3007 team_compute_features(port->team); 3008 break; 3009 case NETDEV_PRECHANGEMTU: 3010 /* Forbid to change mtu of underlaying device */ 3011 if (!port->team->port_mtu_change_allowed) 3012 return NOTIFY_BAD; 3013 break; 3014 case NETDEV_PRE_TYPE_CHANGE: 3015 /* Forbid to change type of underlaying device */ 3016 return NOTIFY_BAD; 3017 case NETDEV_RESEND_IGMP: 3018 /* Propagate to master device */ 3019 call_netdevice_notifiers(event, port->team->dev); 3020 break; 3021 } 3022 return NOTIFY_DONE; 3023 } 3024 3025 static struct notifier_block team_notifier_block __read_mostly = { 3026 .notifier_call = team_device_event, 3027 }; 3028 3029 3030 /*********************** 3031 * Module init and exit 3032 ***********************/ 3033 3034 static int __init team_module_init(void) 3035 { 3036 int err; 3037 3038 register_netdevice_notifier(&team_notifier_block); 3039 3040 err = rtnl_link_register(&team_link_ops); 3041 if (err) 3042 goto err_rtnl_reg; 3043 3044 err = team_nl_init(); 3045 if (err) 3046 goto err_nl_init; 3047 3048 return 0; 3049 3050 err_nl_init: 3051 rtnl_link_unregister(&team_link_ops); 3052 3053 err_rtnl_reg: 3054 unregister_netdevice_notifier(&team_notifier_block); 3055 3056 return err; 3057 } 3058 3059 static void __exit team_module_exit(void) 3060 { 3061 team_nl_fini(); 3062 rtnl_link_unregister(&team_link_ops); 3063 unregister_netdevice_notifier(&team_notifier_block); 3064 } 3065 3066 module_init(team_module_init); 3067 module_exit(team_module_exit); 3068 3069 MODULE_LICENSE("GPL v2"); 3070 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>"); 3071 MODULE_DESCRIPTION("Ethernet team device driver"); 3072 MODULE_ALIAS_RTNL_LINK(DRV_NAME); 3073