team_core.c

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