2 * drivers/net/team/team.c - Network team device driver
3 * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
11 #include <linux/kernel.h>
12 #include <linux/types.h>
13 #include <linux/module.h>
14 #include <linux/init.h>
15 #include <linux/slab.h>
16 #include <linux/rcupdate.h>
17 #include <linux/errno.h>
18 #include <linux/ctype.h>
19 #include <linux/notifier.h>
20 #include <linux/netdevice.h>
21 #include <linux/netpoll.h>
22 #include <linux/if_vlan.h>
23 #include <linux/if_arp.h>
24 #include <linux/socket.h>
25 #include <linux/etherdevice.h>
26 #include <linux/rtnetlink.h>
27 #include <net/rtnetlink.h>
28 #include <net/genetlink.h>
29 #include <net/netlink.h>
30 #include <net/sch_generic.h>
31 #include <generated/utsrelease.h>
32 #include <linux/if_team.h>
34 #define DRV_NAME "team"
41 #define team_port_exists(dev) (dev->priv_flags & IFF_TEAM_PORT)
43 static struct team_port *team_port_get_rcu(const struct net_device *dev)
45 struct team_port *port = rcu_dereference(dev->rx_handler_data);
47 return team_port_exists(dev) ? port : NULL;
50 static struct team_port *team_port_get_rtnl(const struct net_device *dev)
52 struct team_port *port = rtnl_dereference(dev->rx_handler_data);
54 return team_port_exists(dev) ? port : NULL;
58 * Since the ability to change device address for open port device is tested in
59 * team_port_add, this function can be called without control of return value
61 static int __set_port_dev_addr(struct net_device *port_dev,
62 const unsigned char *dev_addr)
66 memcpy(addr.sa_data, dev_addr, port_dev->addr_len);
67 addr.sa_family = port_dev->type;
68 return dev_set_mac_address(port_dev, &addr);
71 static int team_port_set_orig_dev_addr(struct team_port *port)
73 return __set_port_dev_addr(port->dev, port->orig.dev_addr);
76 static int team_port_set_team_dev_addr(struct team *team,
77 struct team_port *port)
79 return __set_port_dev_addr(port->dev, team->dev->dev_addr);
82 int team_modeop_port_enter(struct team *team, struct team_port *port)
84 return team_port_set_team_dev_addr(team, port);
86 EXPORT_SYMBOL(team_modeop_port_enter);
88 void team_modeop_port_change_dev_addr(struct team *team,
89 struct team_port *port)
91 team_port_set_team_dev_addr(team, port);
93 EXPORT_SYMBOL(team_modeop_port_change_dev_addr);
95 static void team_refresh_port_linkup(struct team_port *port)
97 port->linkup = port->user.linkup_enabled ? port->user.linkup :
106 struct team_option_inst { /* One for each option instance */
107 struct list_head list;
108 struct list_head tmp_list;
109 struct team_option *option;
110 struct team_option_inst_info info;
115 static struct team_option *__team_find_option(struct team *team,
116 const char *opt_name)
118 struct team_option *option;
120 list_for_each_entry(option, &team->option_list, list) {
121 if (strcmp(option->name, opt_name) == 0)
127 static void __team_option_inst_del(struct team_option_inst *opt_inst)
129 list_del(&opt_inst->list);
133 static void __team_option_inst_del_option(struct team *team,
134 struct team_option *option)
136 struct team_option_inst *opt_inst, *tmp;
138 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
139 if (opt_inst->option == option)
140 __team_option_inst_del(opt_inst);
144 static int __team_option_inst_add(struct team *team, struct team_option *option,
145 struct team_port *port)
147 struct team_option_inst *opt_inst;
148 unsigned int array_size;
152 array_size = option->array_size;
154 array_size = 1; /* No array but still need one instance */
156 for (i = 0; i < array_size; i++) {
157 opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL);
160 opt_inst->option = option;
161 opt_inst->info.port = port;
162 opt_inst->info.array_index = i;
163 opt_inst->changed = true;
164 opt_inst->removed = false;
165 list_add_tail(&opt_inst->list, &team->option_inst_list);
167 err = option->init(team, &opt_inst->info);
176 static int __team_option_inst_add_option(struct team *team,
177 struct team_option *option)
179 struct team_port *port;
182 if (!option->per_port) {
183 err = __team_option_inst_add(team, option, NULL);
185 goto inst_del_option;
188 list_for_each_entry(port, &team->port_list, list) {
189 err = __team_option_inst_add(team, option, port);
191 goto inst_del_option;
196 __team_option_inst_del_option(team, option);
200 static void __team_option_inst_mark_removed_option(struct team *team,
201 struct team_option *option)
203 struct team_option_inst *opt_inst;
205 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
206 if (opt_inst->option == option) {
207 opt_inst->changed = true;
208 opt_inst->removed = true;
213 static void __team_option_inst_del_port(struct team *team,
214 struct team_port *port)
216 struct team_option_inst *opt_inst, *tmp;
218 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
219 if (opt_inst->option->per_port &&
220 opt_inst->info.port == port)
221 __team_option_inst_del(opt_inst);
225 static int __team_option_inst_add_port(struct team *team,
226 struct team_port *port)
228 struct team_option *option;
231 list_for_each_entry(option, &team->option_list, list) {
232 if (!option->per_port)
234 err = __team_option_inst_add(team, option, port);
241 __team_option_inst_del_port(team, port);
245 static void __team_option_inst_mark_removed_port(struct team *team,
246 struct team_port *port)
248 struct team_option_inst *opt_inst;
250 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
251 if (opt_inst->info.port == port) {
252 opt_inst->changed = true;
253 opt_inst->removed = true;
258 static int __team_options_register(struct team *team,
259 const struct team_option *option,
263 struct team_option **dst_opts;
266 dst_opts = kzalloc(sizeof(struct team_option *) * option_count,
270 for (i = 0; i < option_count; i++, option++) {
271 if (__team_find_option(team, option->name)) {
275 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL);
282 for (i = 0; i < option_count; i++) {
283 err = __team_option_inst_add_option(team, dst_opts[i]);
286 list_add_tail(&dst_opts[i]->list, &team->option_list);
293 for (i--; i >= 0; i--)
294 __team_option_inst_del_option(team, dst_opts[i]);
296 i = option_count - 1;
298 for (i--; i >= 0; i--)
305 static void __team_options_mark_removed(struct team *team,
306 const struct team_option *option,
311 for (i = 0; i < option_count; i++, option++) {
312 struct team_option *del_opt;
314 del_opt = __team_find_option(team, option->name);
316 __team_option_inst_mark_removed_option(team, del_opt);
320 static void __team_options_unregister(struct team *team,
321 const struct team_option *option,
326 for (i = 0; i < option_count; i++, option++) {
327 struct team_option *del_opt;
329 del_opt = __team_find_option(team, option->name);
331 __team_option_inst_del_option(team, del_opt);
332 list_del(&del_opt->list);
338 static void __team_options_change_check(struct team *team);
340 int team_options_register(struct team *team,
341 const struct team_option *option,
346 err = __team_options_register(team, option, option_count);
349 __team_options_change_check(team);
352 EXPORT_SYMBOL(team_options_register);
354 void team_options_unregister(struct team *team,
355 const struct team_option *option,
358 __team_options_mark_removed(team, option, option_count);
359 __team_options_change_check(team);
360 __team_options_unregister(team, option, option_count);
362 EXPORT_SYMBOL(team_options_unregister);
364 static int team_option_get(struct team *team,
365 struct team_option_inst *opt_inst,
366 struct team_gsetter_ctx *ctx)
368 if (!opt_inst->option->getter)
370 return opt_inst->option->getter(team, ctx);
373 static int team_option_set(struct team *team,
374 struct team_option_inst *opt_inst,
375 struct team_gsetter_ctx *ctx)
377 if (!opt_inst->option->setter)
379 return opt_inst->option->setter(team, ctx);
382 void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info)
384 struct team_option_inst *opt_inst;
386 opt_inst = container_of(opt_inst_info, struct team_option_inst, info);
387 opt_inst->changed = true;
389 EXPORT_SYMBOL(team_option_inst_set_change);
391 void team_options_change_check(struct team *team)
393 __team_options_change_check(team);
395 EXPORT_SYMBOL(team_options_change_check);
402 static LIST_HEAD(mode_list);
403 static DEFINE_SPINLOCK(mode_list_lock);
405 struct team_mode_item {
406 struct list_head list;
407 const struct team_mode *mode;
410 static struct team_mode_item *__find_mode(const char *kind)
412 struct team_mode_item *mitem;
414 list_for_each_entry(mitem, &mode_list, list) {
415 if (strcmp(mitem->mode->kind, kind) == 0)
421 static bool is_good_mode_name(const char *name)
423 while (*name != '\0') {
424 if (!isalpha(*name) && !isdigit(*name) && *name != '_')
431 int team_mode_register(const struct team_mode *mode)
434 struct team_mode_item *mitem;
436 if (!is_good_mode_name(mode->kind) ||
437 mode->priv_size > TEAM_MODE_PRIV_SIZE)
440 mitem = kmalloc(sizeof(*mitem), GFP_KERNEL);
444 spin_lock(&mode_list_lock);
445 if (__find_mode(mode->kind)) {
451 list_add_tail(&mitem->list, &mode_list);
453 spin_unlock(&mode_list_lock);
456 EXPORT_SYMBOL(team_mode_register);
458 void team_mode_unregister(const struct team_mode *mode)
460 struct team_mode_item *mitem;
462 spin_lock(&mode_list_lock);
463 mitem = __find_mode(mode->kind);
465 list_del_init(&mitem->list);
468 spin_unlock(&mode_list_lock);
470 EXPORT_SYMBOL(team_mode_unregister);
472 static const struct team_mode *team_mode_get(const char *kind)
474 struct team_mode_item *mitem;
475 const struct team_mode *mode = NULL;
477 spin_lock(&mode_list_lock);
478 mitem = __find_mode(kind);
480 spin_unlock(&mode_list_lock);
481 request_module("team-mode-%s", kind);
482 spin_lock(&mode_list_lock);
483 mitem = __find_mode(kind);
487 if (!try_module_get(mode->owner))
491 spin_unlock(&mode_list_lock);
495 static void team_mode_put(const struct team_mode *mode)
497 module_put(mode->owner);
500 static bool team_dummy_transmit(struct team *team, struct sk_buff *skb)
502 dev_kfree_skb_any(skb);
506 static rx_handler_result_t team_dummy_receive(struct team *team,
507 struct team_port *port,
510 return RX_HANDLER_ANOTHER;
513 static const struct team_mode __team_no_mode = {
517 static bool team_is_mode_set(struct team *team)
519 return team->mode != &__team_no_mode;
522 static void team_set_no_mode(struct team *team)
524 team->user_carrier_enabled = false;
525 team->mode = &__team_no_mode;
528 static void team_adjust_ops(struct team *team)
531 * To avoid checks in rx/tx skb paths, ensure here that non-null and
532 * correct ops are always set.
535 if (!team->en_port_count || !team_is_mode_set(team) ||
536 !team->mode->ops->transmit)
537 team->ops.transmit = team_dummy_transmit;
539 team->ops.transmit = team->mode->ops->transmit;
541 if (!team->en_port_count || !team_is_mode_set(team) ||
542 !team->mode->ops->receive)
543 team->ops.receive = team_dummy_receive;
545 team->ops.receive = team->mode->ops->receive;
549 * We can benefit from the fact that it's ensured no port is present
550 * at the time of mode change. Therefore no packets are in fly so there's no
551 * need to set mode operations in any special way.
553 static int __team_change_mode(struct team *team,
554 const struct team_mode *new_mode)
556 /* Check if mode was previously set and do cleanup if so */
557 if (team_is_mode_set(team)) {
558 void (*exit_op)(struct team *team) = team->ops.exit;
560 /* Clear ops area so no callback is called any longer */
561 memset(&team->ops, 0, sizeof(struct team_mode_ops));
562 team_adjust_ops(team);
566 team_mode_put(team->mode);
567 team_set_no_mode(team);
568 /* zero private data area */
569 memset(&team->mode_priv, 0,
570 sizeof(struct team) - offsetof(struct team, mode_priv));
576 if (new_mode->ops->init) {
579 err = new_mode->ops->init(team);
584 team->mode = new_mode;
585 memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops));
586 team_adjust_ops(team);
591 static int team_change_mode(struct team *team, const char *kind)
593 const struct team_mode *new_mode;
594 struct net_device *dev = team->dev;
597 if (!list_empty(&team->port_list)) {
598 netdev_err(dev, "No ports can be present during mode change\n");
602 if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) {
603 netdev_err(dev, "Unable to change to the same mode the team is in\n");
607 new_mode = team_mode_get(kind);
609 netdev_err(dev, "Mode \"%s\" not found\n", kind);
613 err = __team_change_mode(team, new_mode);
615 netdev_err(dev, "Failed to change to mode \"%s\"\n", kind);
616 team_mode_put(new_mode);
620 netdev_info(dev, "Mode changed to \"%s\"\n", kind);
625 /*********************
627 *********************/
629 static void team_notify_peers_work(struct work_struct *work)
633 team = container_of(work, struct team, notify_peers.dw.work);
635 if (!rtnl_trylock()) {
636 schedule_delayed_work(&team->notify_peers.dw, 0);
639 call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, team->dev);
641 if (!atomic_dec_and_test(&team->notify_peers.count_pending))
642 schedule_delayed_work(&team->notify_peers.dw,
643 msecs_to_jiffies(team->notify_peers.interval));
646 static void team_notify_peers(struct team *team)
648 if (!team->notify_peers.count || !netif_running(team->dev))
650 atomic_add(team->notify_peers.count, &team->notify_peers.count_pending);
651 schedule_delayed_work(&team->notify_peers.dw, 0);
654 static void team_notify_peers_init(struct team *team)
656 INIT_DELAYED_WORK(&team->notify_peers.dw, team_notify_peers_work);
659 static void team_notify_peers_fini(struct team *team)
661 cancel_delayed_work_sync(&team->notify_peers.dw);
665 /*******************************
666 * Send multicast group rejoins
667 *******************************/
669 static void team_mcast_rejoin_work(struct work_struct *work)
673 team = container_of(work, struct team, mcast_rejoin.dw.work);
675 if (!rtnl_trylock()) {
676 schedule_delayed_work(&team->mcast_rejoin.dw, 0);
679 call_netdevice_notifiers(NETDEV_RESEND_IGMP, team->dev);
681 if (!atomic_dec_and_test(&team->mcast_rejoin.count_pending))
682 schedule_delayed_work(&team->mcast_rejoin.dw,
683 msecs_to_jiffies(team->mcast_rejoin.interval));
686 static void team_mcast_rejoin(struct team *team)
688 if (!team->mcast_rejoin.count || !netif_running(team->dev))
690 atomic_add(team->mcast_rejoin.count, &team->mcast_rejoin.count_pending);
691 schedule_delayed_work(&team->mcast_rejoin.dw, 0);
694 static void team_mcast_rejoin_init(struct team *team)
696 INIT_DELAYED_WORK(&team->mcast_rejoin.dw, team_mcast_rejoin_work);
699 static void team_mcast_rejoin_fini(struct team *team)
701 cancel_delayed_work_sync(&team->mcast_rejoin.dw);
705 /************************
706 * Rx path frame handler
707 ************************/
709 /* note: already called with rcu_read_lock */
710 static rx_handler_result_t team_handle_frame(struct sk_buff **pskb)
712 struct sk_buff *skb = *pskb;
713 struct team_port *port;
715 rx_handler_result_t res;
717 skb = skb_share_check(skb, GFP_ATOMIC);
719 return RX_HANDLER_CONSUMED;
723 port = team_port_get_rcu(skb->dev);
725 if (!team_port_enabled(port)) {
726 /* allow exact match delivery for disabled ports */
727 res = RX_HANDLER_EXACT;
729 res = team->ops.receive(team, port, skb);
731 if (res == RX_HANDLER_ANOTHER) {
732 struct team_pcpu_stats *pcpu_stats;
734 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
735 u64_stats_update_begin(&pcpu_stats->syncp);
736 pcpu_stats->rx_packets++;
737 pcpu_stats->rx_bytes += skb->len;
738 if (skb->pkt_type == PACKET_MULTICAST)
739 pcpu_stats->rx_multicast++;
740 u64_stats_update_end(&pcpu_stats->syncp);
742 skb->dev = team->dev;
744 this_cpu_inc(team->pcpu_stats->rx_dropped);
751 /*************************************
752 * Multiqueue Tx port select override
753 *************************************/
755 static int team_queue_override_init(struct team *team)
757 struct list_head *listarr;
758 unsigned int queue_cnt = team->dev->num_tx_queues - 1;
763 listarr = kmalloc(sizeof(struct list_head) * queue_cnt, GFP_KERNEL);
766 team->qom_lists = listarr;
767 for (i = 0; i < queue_cnt; i++)
768 INIT_LIST_HEAD(listarr++);
772 static void team_queue_override_fini(struct team *team)
774 kfree(team->qom_lists);
777 static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id)
779 return &team->qom_lists[queue_id - 1];
783 * note: already called with rcu_read_lock
785 static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb)
787 struct list_head *qom_list;
788 struct team_port *port;
790 if (!team->queue_override_enabled || !skb->queue_mapping)
792 qom_list = __team_get_qom_list(team, skb->queue_mapping);
793 list_for_each_entry_rcu(port, qom_list, qom_list) {
794 if (!team_dev_queue_xmit(team, port, skb))
800 static void __team_queue_override_port_del(struct team *team,
801 struct team_port *port)
805 list_del_rcu(&port->qom_list);
808 static bool team_queue_override_port_has_gt_prio_than(struct team_port *port,
809 struct team_port *cur)
811 if (port->priority < cur->priority)
813 if (port->priority > cur->priority)
815 if (port->index < cur->index)
820 static void __team_queue_override_port_add(struct team *team,
821 struct team_port *port)
823 struct team_port *cur;
824 struct list_head *qom_list;
825 struct list_head *node;
829 qom_list = __team_get_qom_list(team, port->queue_id);
831 list_for_each_entry(cur, qom_list, qom_list) {
832 if (team_queue_override_port_has_gt_prio_than(port, cur))
834 node = &cur->qom_list;
836 list_add_tail_rcu(&port->qom_list, node);
839 static void __team_queue_override_enabled_check(struct team *team)
841 struct team_port *port;
842 bool enabled = false;
844 list_for_each_entry(port, &team->port_list, list) {
845 if (port->queue_id) {
850 if (enabled == team->queue_override_enabled)
852 netdev_dbg(team->dev, "%s queue override\n",
853 enabled ? "Enabling" : "Disabling");
854 team->queue_override_enabled = enabled;
857 static void team_queue_override_port_prio_changed(struct team *team,
858 struct team_port *port)
860 if (!port->queue_id || team_port_enabled(port))
862 __team_queue_override_port_del(team, port);
863 __team_queue_override_port_add(team, port);
864 __team_queue_override_enabled_check(team);
867 static void team_queue_override_port_change_queue_id(struct team *team,
868 struct team_port *port,
871 if (team_port_enabled(port)) {
872 __team_queue_override_port_del(team, port);
873 port->queue_id = new_queue_id;
874 __team_queue_override_port_add(team, port);
875 __team_queue_override_enabled_check(team);
877 port->queue_id = new_queue_id;
881 static void team_queue_override_port_add(struct team *team,
882 struct team_port *port)
884 __team_queue_override_port_add(team, port);
885 __team_queue_override_enabled_check(team);
888 static void team_queue_override_port_del(struct team *team,
889 struct team_port *port)
891 __team_queue_override_port_del(team, port);
892 __team_queue_override_enabled_check(team);
900 static bool team_port_find(const struct team *team,
901 const struct team_port *port)
903 struct team_port *cur;
905 list_for_each_entry(cur, &team->port_list, list)
912 * Enable/disable port by adding to enabled port hashlist and setting
913 * port->index (Might be racy so reader could see incorrect ifindex when
914 * processing a flying packet, but that is not a problem). Write guarded
917 static void team_port_enable(struct team *team,
918 struct team_port *port)
920 if (team_port_enabled(port))
922 port->index = team->en_port_count++;
923 hlist_add_head_rcu(&port->hlist,
924 team_port_index_hash(team, port->index));
925 team_adjust_ops(team);
926 team_queue_override_port_add(team, port);
927 if (team->ops.port_enabled)
928 team->ops.port_enabled(team, port);
929 team_notify_peers(team);
930 team_mcast_rejoin(team);
933 static void __reconstruct_port_hlist(struct team *team, int rm_index)
936 struct team_port *port;
938 for (i = rm_index + 1; i < team->en_port_count; i++) {
939 port = team_get_port_by_index(team, i);
940 hlist_del_rcu(&port->hlist);
942 hlist_add_head_rcu(&port->hlist,
943 team_port_index_hash(team, port->index));
947 static void team_port_disable(struct team *team,
948 struct team_port *port)
950 if (!team_port_enabled(port))
952 if (team->ops.port_disabled)
953 team->ops.port_disabled(team, port);
954 hlist_del_rcu(&port->hlist);
955 __reconstruct_port_hlist(team, port->index);
957 team->en_port_count--;
958 team_queue_override_port_del(team, port);
959 team_adjust_ops(team);
960 team_notify_peers(team);
961 team_mcast_rejoin(team);
964 #define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \
965 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
966 NETIF_F_HIGHDMA | NETIF_F_LRO)
968 static void __team_compute_features(struct team *team)
970 struct team_port *port;
971 u32 vlan_features = TEAM_VLAN_FEATURES & NETIF_F_ALL_FOR_ALL;
972 unsigned short max_hard_header_len = ETH_HLEN;
973 unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE |
974 IFF_XMIT_DST_RELEASE_PERM;
976 list_for_each_entry(port, &team->port_list, list) {
977 vlan_features = netdev_increment_features(vlan_features,
978 port->dev->vlan_features,
981 dst_release_flag &= port->dev->priv_flags;
982 if (port->dev->hard_header_len > max_hard_header_len)
983 max_hard_header_len = port->dev->hard_header_len;
986 team->dev->vlan_features = vlan_features;
987 team->dev->hard_header_len = max_hard_header_len;
989 team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
990 if (dst_release_flag == (IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM))
991 team->dev->priv_flags |= IFF_XMIT_DST_RELEASE;
993 netdev_change_features(team->dev);
996 static void team_compute_features(struct team *team)
998 mutex_lock(&team->lock);
999 __team_compute_features(team);
1000 mutex_unlock(&team->lock);
1003 static int team_port_enter(struct team *team, struct team_port *port)
1007 dev_hold(team->dev);
1008 if (team->ops.port_enter) {
1009 err = team->ops.port_enter(team, port);
1011 netdev_err(team->dev, "Device %s failed to enter team mode\n",
1013 goto err_port_enter;
1025 static void team_port_leave(struct team *team, struct team_port *port)
1027 if (team->ops.port_leave)
1028 team->ops.port_leave(team, port);
1032 #ifdef CONFIG_NET_POLL_CONTROLLER
1033 static int team_port_enable_netpoll(struct team *team, struct team_port *port)
1038 if (!team->dev->npinfo)
1041 np = kzalloc(sizeof(*np), GFP_KERNEL);
1045 err = __netpoll_setup(np, port->dev);
1054 static void team_port_disable_netpoll(struct team_port *port)
1056 struct netpoll *np = port->np;
1062 /* Wait for transmitting packets to finish before freeing. */
1063 synchronize_rcu_bh();
1064 __netpoll_cleanup(np);
1068 static int team_port_enable_netpoll(struct team *team, struct team_port *port)
1072 static void team_port_disable_netpoll(struct team_port *port)
1077 static int team_upper_dev_link(struct net_device *dev,
1078 struct net_device *port_dev)
1082 err = netdev_master_upper_dev_link(port_dev, dev);
1085 port_dev->priv_flags |= IFF_TEAM_PORT;
1089 static void team_upper_dev_unlink(struct net_device *dev,
1090 struct net_device *port_dev)
1092 netdev_upper_dev_unlink(port_dev, dev);
1093 port_dev->priv_flags &= ~IFF_TEAM_PORT;
1096 static void __team_port_change_port_added(struct team_port *port, bool linkup);
1097 static int team_dev_type_check_change(struct net_device *dev,
1098 struct net_device *port_dev);
1100 static int team_port_add(struct team *team, struct net_device *port_dev)
1102 struct net_device *dev = team->dev;
1103 struct team_port *port;
1104 char *portname = port_dev->name;
1107 if (port_dev->flags & IFF_LOOPBACK) {
1108 netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n",
1113 if (team_port_exists(port_dev)) {
1114 netdev_err(dev, "Device %s is already a port "
1115 "of a team device\n", portname);
1119 if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
1120 vlan_uses_dev(dev)) {
1121 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
1126 err = team_dev_type_check_change(dev, port_dev);
1130 if (port_dev->flags & IFF_UP) {
1131 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
1136 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size,
1141 port->dev = port_dev;
1143 INIT_LIST_HEAD(&port->qom_list);
1145 port->orig.mtu = port_dev->mtu;
1146 err = dev_set_mtu(port_dev, dev->mtu);
1148 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
1152 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len);
1154 err = team_port_enter(team, port);
1156 netdev_err(dev, "Device %s failed to enter team mode\n",
1158 goto err_port_enter;
1161 err = dev_open(port_dev);
1163 netdev_dbg(dev, "Device %s opening failed\n",
1168 err = vlan_vids_add_by_dev(port_dev, dev);
1170 netdev_err(dev, "Failed to add vlan ids to device %s\n",
1175 err = team_port_enable_netpoll(team, port);
1177 netdev_err(dev, "Failed to enable netpoll on device %s\n",
1179 goto err_enable_netpoll;
1182 err = netdev_rx_handler_register(port_dev, team_handle_frame,
1185 netdev_err(dev, "Device %s failed to register rx_handler\n",
1187 goto err_handler_register;
1190 err = team_upper_dev_link(dev, port_dev);
1192 netdev_err(dev, "Device %s failed to set upper link\n",
1194 goto err_set_upper_link;
1197 err = __team_option_inst_add_port(team, port);
1199 netdev_err(dev, "Device %s failed to add per-port options\n",
1201 goto err_option_port_add;
1205 list_add_tail_rcu(&port->list, &team->port_list);
1206 team_port_enable(team, port);
1207 __team_compute_features(team);
1208 __team_port_change_port_added(port, !!netif_carrier_ok(port_dev));
1209 __team_options_change_check(team);
1211 netdev_info(dev, "Port device %s added\n", portname);
1215 err_option_port_add:
1216 team_upper_dev_unlink(dev, port_dev);
1219 netdev_rx_handler_unregister(port_dev);
1221 err_handler_register:
1222 team_port_disable_netpoll(port);
1225 vlan_vids_del_by_dev(port_dev, dev);
1228 dev_close(port_dev);
1231 team_port_leave(team, port);
1232 team_port_set_orig_dev_addr(port);
1235 dev_set_mtu(port_dev, port->orig.mtu);
1243 static void __team_port_change_port_removed(struct team_port *port);
1245 static int team_port_del(struct team *team, struct net_device *port_dev)
1247 struct net_device *dev = team->dev;
1248 struct team_port *port;
1249 char *portname = port_dev->name;
1251 port = team_port_get_rtnl(port_dev);
1252 if (!port || !team_port_find(team, port)) {
1253 netdev_err(dev, "Device %s does not act as a port of this team\n",
1258 team_port_disable(team, port);
1259 list_del_rcu(&port->list);
1260 team_upper_dev_unlink(dev, port_dev);
1261 netdev_rx_handler_unregister(port_dev);
1262 team_port_disable_netpoll(port);
1263 vlan_vids_del_by_dev(port_dev, dev);
1264 dev_uc_unsync(port_dev, dev);
1265 dev_mc_unsync(port_dev, dev);
1266 dev_close(port_dev);
1267 team_port_leave(team, port);
1269 __team_option_inst_mark_removed_port(team, port);
1270 __team_options_change_check(team);
1271 __team_option_inst_del_port(team, port);
1272 __team_port_change_port_removed(port);
1274 team_port_set_orig_dev_addr(port);
1275 dev_set_mtu(port_dev, port->orig.mtu);
1276 kfree_rcu(port, rcu);
1277 netdev_info(dev, "Port device %s removed\n", portname);
1278 __team_compute_features(team);
1288 static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
1290 ctx->data.str_val = team->mode->kind;
1294 static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
1296 return team_change_mode(team, ctx->data.str_val);
1299 static int team_notify_peers_count_get(struct team *team,
1300 struct team_gsetter_ctx *ctx)
1302 ctx->data.u32_val = team->notify_peers.count;
1306 static int team_notify_peers_count_set(struct team *team,
1307 struct team_gsetter_ctx *ctx)
1309 team->notify_peers.count = ctx->data.u32_val;
1313 static int team_notify_peers_interval_get(struct team *team,
1314 struct team_gsetter_ctx *ctx)
1316 ctx->data.u32_val = team->notify_peers.interval;
1320 static int team_notify_peers_interval_set(struct team *team,
1321 struct team_gsetter_ctx *ctx)
1323 team->notify_peers.interval = ctx->data.u32_val;
1327 static int team_mcast_rejoin_count_get(struct team *team,
1328 struct team_gsetter_ctx *ctx)
1330 ctx->data.u32_val = team->mcast_rejoin.count;
1334 static int team_mcast_rejoin_count_set(struct team *team,
1335 struct team_gsetter_ctx *ctx)
1337 team->mcast_rejoin.count = ctx->data.u32_val;
1341 static int team_mcast_rejoin_interval_get(struct team *team,
1342 struct team_gsetter_ctx *ctx)
1344 ctx->data.u32_val = team->mcast_rejoin.interval;
1348 static int team_mcast_rejoin_interval_set(struct team *team,
1349 struct team_gsetter_ctx *ctx)
1351 team->mcast_rejoin.interval = ctx->data.u32_val;
1355 static int team_port_en_option_get(struct team *team,
1356 struct team_gsetter_ctx *ctx)
1358 struct team_port *port = ctx->info->port;
1360 ctx->data.bool_val = team_port_enabled(port);
1364 static int team_port_en_option_set(struct team *team,
1365 struct team_gsetter_ctx *ctx)
1367 struct team_port *port = ctx->info->port;
1369 if (ctx->data.bool_val)
1370 team_port_enable(team, port);
1372 team_port_disable(team, port);
1376 static int team_user_linkup_option_get(struct team *team,
1377 struct team_gsetter_ctx *ctx)
1379 struct team_port *port = ctx->info->port;
1381 ctx->data.bool_val = port->user.linkup;
1385 static void __team_carrier_check(struct team *team);
1387 static int team_user_linkup_option_set(struct team *team,
1388 struct team_gsetter_ctx *ctx)
1390 struct team_port *port = ctx->info->port;
1392 port->user.linkup = ctx->data.bool_val;
1393 team_refresh_port_linkup(port);
1394 __team_carrier_check(port->team);
1398 static int team_user_linkup_en_option_get(struct team *team,
1399 struct team_gsetter_ctx *ctx)
1401 struct team_port *port = ctx->info->port;
1403 ctx->data.bool_val = port->user.linkup_enabled;
1407 static int team_user_linkup_en_option_set(struct team *team,
1408 struct team_gsetter_ctx *ctx)
1410 struct team_port *port = ctx->info->port;
1412 port->user.linkup_enabled = ctx->data.bool_val;
1413 team_refresh_port_linkup(port);
1414 __team_carrier_check(port->team);
1418 static int team_priority_option_get(struct team *team,
1419 struct team_gsetter_ctx *ctx)
1421 struct team_port *port = ctx->info->port;
1423 ctx->data.s32_val = port->priority;
1427 static int team_priority_option_set(struct team *team,
1428 struct team_gsetter_ctx *ctx)
1430 struct team_port *port = ctx->info->port;
1431 s32 priority = ctx->data.s32_val;
1433 if (port->priority == priority)
1435 port->priority = priority;
1436 team_queue_override_port_prio_changed(team, port);
1440 static int team_queue_id_option_get(struct team *team,
1441 struct team_gsetter_ctx *ctx)
1443 struct team_port *port = ctx->info->port;
1445 ctx->data.u32_val = port->queue_id;
1449 static int team_queue_id_option_set(struct team *team,
1450 struct team_gsetter_ctx *ctx)
1452 struct team_port *port = ctx->info->port;
1453 u16 new_queue_id = ctx->data.u32_val;
1455 if (port->queue_id == new_queue_id)
1457 if (new_queue_id >= team->dev->real_num_tx_queues)
1459 team_queue_override_port_change_queue_id(team, port, new_queue_id);
1463 static const struct team_option team_options[] = {
1466 .type = TEAM_OPTION_TYPE_STRING,
1467 .getter = team_mode_option_get,
1468 .setter = team_mode_option_set,
1471 .name = "notify_peers_count",
1472 .type = TEAM_OPTION_TYPE_U32,
1473 .getter = team_notify_peers_count_get,
1474 .setter = team_notify_peers_count_set,
1477 .name = "notify_peers_interval",
1478 .type = TEAM_OPTION_TYPE_U32,
1479 .getter = team_notify_peers_interval_get,
1480 .setter = team_notify_peers_interval_set,
1483 .name = "mcast_rejoin_count",
1484 .type = TEAM_OPTION_TYPE_U32,
1485 .getter = team_mcast_rejoin_count_get,
1486 .setter = team_mcast_rejoin_count_set,
1489 .name = "mcast_rejoin_interval",
1490 .type = TEAM_OPTION_TYPE_U32,
1491 .getter = team_mcast_rejoin_interval_get,
1492 .setter = team_mcast_rejoin_interval_set,
1496 .type = TEAM_OPTION_TYPE_BOOL,
1498 .getter = team_port_en_option_get,
1499 .setter = team_port_en_option_set,
1502 .name = "user_linkup",
1503 .type = TEAM_OPTION_TYPE_BOOL,
1505 .getter = team_user_linkup_option_get,
1506 .setter = team_user_linkup_option_set,
1509 .name = "user_linkup_enabled",
1510 .type = TEAM_OPTION_TYPE_BOOL,
1512 .getter = team_user_linkup_en_option_get,
1513 .setter = team_user_linkup_en_option_set,
1517 .type = TEAM_OPTION_TYPE_S32,
1519 .getter = team_priority_option_get,
1520 .setter = team_priority_option_set,
1524 .type = TEAM_OPTION_TYPE_U32,
1526 .getter = team_queue_id_option_get,
1527 .setter = team_queue_id_option_set,
1531 static struct lock_class_key team_netdev_xmit_lock_key;
1532 static struct lock_class_key team_netdev_addr_lock_key;
1533 static struct lock_class_key team_tx_busylock_key;
1535 static void team_set_lockdep_class_one(struct net_device *dev,
1536 struct netdev_queue *txq,
1539 lockdep_set_class(&txq->_xmit_lock, &team_netdev_xmit_lock_key);
1542 static void team_set_lockdep_class(struct net_device *dev)
1544 lockdep_set_class(&dev->addr_list_lock, &team_netdev_addr_lock_key);
1545 netdev_for_each_tx_queue(dev, team_set_lockdep_class_one, NULL);
1546 dev->qdisc_tx_busylock = &team_tx_busylock_key;
1549 static int team_init(struct net_device *dev)
1551 struct team *team = netdev_priv(dev);
1556 mutex_init(&team->lock);
1557 team_set_no_mode(team);
1559 team->pcpu_stats = netdev_alloc_pcpu_stats(struct team_pcpu_stats);
1560 if (!team->pcpu_stats)
1563 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
1564 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
1565 INIT_LIST_HEAD(&team->port_list);
1566 err = team_queue_override_init(team);
1568 goto err_team_queue_override_init;
1570 team_adjust_ops(team);
1572 INIT_LIST_HEAD(&team->option_list);
1573 INIT_LIST_HEAD(&team->option_inst_list);
1575 team_notify_peers_init(team);
1576 team_mcast_rejoin_init(team);
1578 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1580 goto err_options_register;
1581 netif_carrier_off(dev);
1583 team_set_lockdep_class(dev);
1587 err_options_register:
1588 team_mcast_rejoin_fini(team);
1589 team_notify_peers_fini(team);
1590 team_queue_override_fini(team);
1591 err_team_queue_override_init:
1592 free_percpu(team->pcpu_stats);
1597 static void team_uninit(struct net_device *dev)
1599 struct team *team = netdev_priv(dev);
1600 struct team_port *port;
1601 struct team_port *tmp;
1603 mutex_lock(&team->lock);
1604 list_for_each_entry_safe(port, tmp, &team->port_list, list)
1605 team_port_del(team, port->dev);
1607 __team_change_mode(team, NULL); /* cleanup */
1608 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
1609 team_mcast_rejoin_fini(team);
1610 team_notify_peers_fini(team);
1611 team_queue_override_fini(team);
1612 mutex_unlock(&team->lock);
1615 static void team_destructor(struct net_device *dev)
1617 struct team *team = netdev_priv(dev);
1619 free_percpu(team->pcpu_stats);
1623 static int team_open(struct net_device *dev)
1628 static int team_close(struct net_device *dev)
1634 * note: already called with rcu_read_lock
1636 static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1638 struct team *team = netdev_priv(dev);
1640 unsigned int len = skb->len;
1642 tx_success = team_queue_override_transmit(team, skb);
1644 tx_success = team->ops.transmit(team, skb);
1646 struct team_pcpu_stats *pcpu_stats;
1648 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1649 u64_stats_update_begin(&pcpu_stats->syncp);
1650 pcpu_stats->tx_packets++;
1651 pcpu_stats->tx_bytes += len;
1652 u64_stats_update_end(&pcpu_stats->syncp);
1654 this_cpu_inc(team->pcpu_stats->tx_dropped);
1657 return NETDEV_TX_OK;
1660 static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb,
1661 void *accel_priv, select_queue_fallback_t fallback)
1664 * This helper function exists to help dev_pick_tx get the correct
1665 * destination queue. Using a helper function skips a call to
1666 * skb_tx_hash and will put the skbs in the queue we expect on their
1667 * way down to the team driver.
1669 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1672 * Save the original txq to restore before passing to the driver
1674 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1676 if (unlikely(txq >= dev->real_num_tx_queues)) {
1678 txq -= dev->real_num_tx_queues;
1679 } while (txq >= dev->real_num_tx_queues);
1684 static void team_change_rx_flags(struct net_device *dev, int change)
1686 struct team *team = netdev_priv(dev);
1687 struct team_port *port;
1691 list_for_each_entry_rcu(port, &team->port_list, list) {
1692 if (change & IFF_PROMISC) {
1693 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1694 dev_set_promiscuity(port->dev, inc);
1696 if (change & IFF_ALLMULTI) {
1697 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1698 dev_set_allmulti(port->dev, inc);
1704 static void team_set_rx_mode(struct net_device *dev)
1706 struct team *team = netdev_priv(dev);
1707 struct team_port *port;
1710 list_for_each_entry_rcu(port, &team->port_list, list) {
1711 dev_uc_sync_multiple(port->dev, dev);
1712 dev_mc_sync_multiple(port->dev, dev);
1717 static int team_set_mac_address(struct net_device *dev, void *p)
1719 struct sockaddr *addr = p;
1720 struct team *team = netdev_priv(dev);
1721 struct team_port *port;
1723 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data))
1724 return -EADDRNOTAVAIL;
1725 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1727 list_for_each_entry_rcu(port, &team->port_list, list)
1728 if (team->ops.port_change_dev_addr)
1729 team->ops.port_change_dev_addr(team, port);
1734 static int team_change_mtu(struct net_device *dev, int new_mtu)
1736 struct team *team = netdev_priv(dev);
1737 struct team_port *port;
1741 * Alhough this is reader, it's guarded by team lock. It's not possible
1742 * to traverse list in reverse under rcu_read_lock
1744 mutex_lock(&team->lock);
1745 team->port_mtu_change_allowed = true;
1746 list_for_each_entry(port, &team->port_list, list) {
1747 err = dev_set_mtu(port->dev, new_mtu);
1749 netdev_err(dev, "Device %s failed to change mtu",
1754 team->port_mtu_change_allowed = false;
1755 mutex_unlock(&team->lock);
1762 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1763 dev_set_mtu(port->dev, dev->mtu);
1764 team->port_mtu_change_allowed = false;
1765 mutex_unlock(&team->lock);
1770 static struct rtnl_link_stats64 *
1771 team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1773 struct team *team = netdev_priv(dev);
1774 struct team_pcpu_stats *p;
1775 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1776 u32 rx_dropped = 0, tx_dropped = 0;
1780 for_each_possible_cpu(i) {
1781 p = per_cpu_ptr(team->pcpu_stats, i);
1783 start = u64_stats_fetch_begin_irq(&p->syncp);
1784 rx_packets = p->rx_packets;
1785 rx_bytes = p->rx_bytes;
1786 rx_multicast = p->rx_multicast;
1787 tx_packets = p->tx_packets;
1788 tx_bytes = p->tx_bytes;
1789 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
1791 stats->rx_packets += rx_packets;
1792 stats->rx_bytes += rx_bytes;
1793 stats->multicast += rx_multicast;
1794 stats->tx_packets += tx_packets;
1795 stats->tx_bytes += tx_bytes;
1797 * rx_dropped & tx_dropped are u32, updated
1798 * without syncp protection.
1800 rx_dropped += p->rx_dropped;
1801 tx_dropped += p->tx_dropped;
1803 stats->rx_dropped = rx_dropped;
1804 stats->tx_dropped = tx_dropped;
1808 static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
1810 struct team *team = netdev_priv(dev);
1811 struct team_port *port;
1815 * Alhough this is reader, it's guarded by team lock. It's not possible
1816 * to traverse list in reverse under rcu_read_lock
1818 mutex_lock(&team->lock);
1819 list_for_each_entry(port, &team->port_list, list) {
1820 err = vlan_vid_add(port->dev, proto, vid);
1824 mutex_unlock(&team->lock);
1829 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1830 vlan_vid_del(port->dev, proto, vid);
1831 mutex_unlock(&team->lock);
1836 static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
1838 struct team *team = netdev_priv(dev);
1839 struct team_port *port;
1842 list_for_each_entry_rcu(port, &team->port_list, list)
1843 vlan_vid_del(port->dev, proto, vid);
1849 #ifdef CONFIG_NET_POLL_CONTROLLER
1850 static void team_poll_controller(struct net_device *dev)
1854 static void __team_netpoll_cleanup(struct team *team)
1856 struct team_port *port;
1858 list_for_each_entry(port, &team->port_list, list)
1859 team_port_disable_netpoll(port);
1862 static void team_netpoll_cleanup(struct net_device *dev)
1864 struct team *team = netdev_priv(dev);
1866 mutex_lock(&team->lock);
1867 __team_netpoll_cleanup(team);
1868 mutex_unlock(&team->lock);
1871 static int team_netpoll_setup(struct net_device *dev,
1872 struct netpoll_info *npifo)
1874 struct team *team = netdev_priv(dev);
1875 struct team_port *port;
1878 mutex_lock(&team->lock);
1879 list_for_each_entry(port, &team->port_list, list) {
1880 err = team_port_enable_netpoll(team, port);
1882 __team_netpoll_cleanup(team);
1886 mutex_unlock(&team->lock);
1891 static int team_add_slave(struct net_device *dev, struct net_device *port_dev)
1893 struct team *team = netdev_priv(dev);
1896 mutex_lock(&team->lock);
1897 err = team_port_add(team, port_dev);
1898 mutex_unlock(&team->lock);
1902 static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1904 struct team *team = netdev_priv(dev);
1907 mutex_lock(&team->lock);
1908 err = team_port_del(team, port_dev);
1909 mutex_unlock(&team->lock);
1913 static netdev_features_t team_fix_features(struct net_device *dev,
1914 netdev_features_t features)
1916 struct team_port *port;
1917 struct team *team = netdev_priv(dev);
1918 netdev_features_t mask;
1921 features &= ~NETIF_F_ONE_FOR_ALL;
1922 features |= NETIF_F_ALL_FOR_ALL;
1925 list_for_each_entry_rcu(port, &team->port_list, list) {
1926 features = netdev_increment_features(features,
1927 port->dev->features,
1934 static int team_change_carrier(struct net_device *dev, bool new_carrier)
1936 struct team *team = netdev_priv(dev);
1938 team->user_carrier_enabled = true;
1941 netif_carrier_on(dev);
1943 netif_carrier_off(dev);
1947 static const struct net_device_ops team_netdev_ops = {
1948 .ndo_init = team_init,
1949 .ndo_uninit = team_uninit,
1950 .ndo_open = team_open,
1951 .ndo_stop = team_close,
1952 .ndo_start_xmit = team_xmit,
1953 .ndo_select_queue = team_select_queue,
1954 .ndo_change_rx_flags = team_change_rx_flags,
1955 .ndo_set_rx_mode = team_set_rx_mode,
1956 .ndo_set_mac_address = team_set_mac_address,
1957 .ndo_change_mtu = team_change_mtu,
1958 .ndo_get_stats64 = team_get_stats64,
1959 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
1960 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
1961 #ifdef CONFIG_NET_POLL_CONTROLLER
1962 .ndo_poll_controller = team_poll_controller,
1963 .ndo_netpoll_setup = team_netpoll_setup,
1964 .ndo_netpoll_cleanup = team_netpoll_cleanup,
1966 .ndo_add_slave = team_add_slave,
1967 .ndo_del_slave = team_del_slave,
1968 .ndo_fix_features = team_fix_features,
1969 .ndo_change_carrier = team_change_carrier,
1972 /***********************
1974 ***********************/
1976 static void team_ethtool_get_drvinfo(struct net_device *dev,
1977 struct ethtool_drvinfo *drvinfo)
1979 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
1980 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
1983 static const struct ethtool_ops team_ethtool_ops = {
1984 .get_drvinfo = team_ethtool_get_drvinfo,
1985 .get_link = ethtool_op_get_link,
1988 /***********************
1989 * rt netlink interface
1990 ***********************/
1992 static void team_setup_by_port(struct net_device *dev,
1993 struct net_device *port_dev)
1995 dev->header_ops = port_dev->header_ops;
1996 dev->type = port_dev->type;
1997 dev->hard_header_len = port_dev->hard_header_len;
1998 dev->addr_len = port_dev->addr_len;
1999 dev->mtu = port_dev->mtu;
2000 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
2001 eth_hw_addr_inherit(dev, port_dev);
2004 static int team_dev_type_check_change(struct net_device *dev,
2005 struct net_device *port_dev)
2007 struct team *team = netdev_priv(dev);
2008 char *portname = port_dev->name;
2011 if (dev->type == port_dev->type)
2013 if (!list_empty(&team->port_list)) {
2014 netdev_err(dev, "Device %s is of different type\n", portname);
2017 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev);
2018 err = notifier_to_errno(err);
2020 netdev_err(dev, "Refused to change device type\n");
2025 team_setup_by_port(dev, port_dev);
2026 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev);
2030 static void team_setup(struct net_device *dev)
2034 dev->netdev_ops = &team_netdev_ops;
2035 dev->ethtool_ops = &team_ethtool_ops;
2036 dev->destructor = team_destructor;
2037 dev->tx_queue_len = 0;
2038 dev->flags |= IFF_MULTICAST;
2039 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
2042 * Indicate we support unicast address filtering. That way core won't
2043 * bring us to promisc mode in case a unicast addr is added.
2044 * Let this up to underlay drivers.
2046 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
2048 dev->features |= NETIF_F_LLTX;
2049 dev->features |= NETIF_F_GRO;
2051 /* Don't allow team devices to change network namespaces. */
2052 dev->features |= NETIF_F_NETNS_LOCAL;
2054 dev->hw_features = TEAM_VLAN_FEATURES |
2055 NETIF_F_HW_VLAN_CTAG_TX |
2056 NETIF_F_HW_VLAN_CTAG_RX |
2057 NETIF_F_HW_VLAN_CTAG_FILTER;
2059 dev->hw_features &= ~(NETIF_F_ALL_CSUM & ~NETIF_F_HW_CSUM);
2060 dev->features |= dev->hw_features;
2063 static int team_newlink(struct net *src_net, struct net_device *dev,
2064 struct nlattr *tb[], struct nlattr *data[])
2066 if (tb[IFLA_ADDRESS] == NULL)
2067 eth_hw_addr_random(dev);
2069 return register_netdevice(dev);
2072 static int team_validate(struct nlattr *tb[], struct nlattr *data[])
2074 if (tb[IFLA_ADDRESS]) {
2075 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
2077 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
2078 return -EADDRNOTAVAIL;
2083 static unsigned int team_get_num_tx_queues(void)
2085 return TEAM_DEFAULT_NUM_TX_QUEUES;
2088 static unsigned int team_get_num_rx_queues(void)
2090 return TEAM_DEFAULT_NUM_RX_QUEUES;
2093 static struct rtnl_link_ops team_link_ops __read_mostly = {
2095 .priv_size = sizeof(struct team),
2096 .setup = team_setup,
2097 .newlink = team_newlink,
2098 .validate = team_validate,
2099 .get_num_tx_queues = team_get_num_tx_queues,
2100 .get_num_rx_queues = team_get_num_rx_queues,
2104 /***********************************
2105 * Generic netlink custom interface
2106 ***********************************/
2108 static struct genl_family team_nl_family = {
2109 .id = GENL_ID_GENERATE,
2110 .name = TEAM_GENL_NAME,
2111 .version = TEAM_GENL_VERSION,
2112 .maxattr = TEAM_ATTR_MAX,
2116 static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
2117 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
2118 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
2119 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
2120 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
2123 static const struct nla_policy
2124 team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
2125 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
2126 [TEAM_ATTR_OPTION_NAME] = {
2128 .len = TEAM_STRING_MAX_LEN,
2130 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
2131 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
2132 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
2135 static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
2137 struct sk_buff *msg;
2141 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2145 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
2146 &team_nl_family, 0, TEAM_CMD_NOOP);
2152 genlmsg_end(msg, hdr);
2154 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid);
2163 * Netlink cmd functions should be locked by following two functions.
2164 * Since dev gets held here, that ensures dev won't disappear in between.
2166 static struct team *team_nl_team_get(struct genl_info *info)
2168 struct net *net = genl_info_net(info);
2170 struct net_device *dev;
2173 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
2176 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
2177 dev = dev_get_by_index(net, ifindex);
2178 if (!dev || dev->netdev_ops != &team_netdev_ops) {
2184 team = netdev_priv(dev);
2185 mutex_lock(&team->lock);
2189 static void team_nl_team_put(struct team *team)
2191 mutex_unlock(&team->lock);
2195 typedef int team_nl_send_func_t(struct sk_buff *skb,
2196 struct team *team, u32 portid);
2198 static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid)
2200 return genlmsg_unicast(dev_net(team->dev), skb, portid);
2203 static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
2204 struct team_option_inst *opt_inst)
2206 struct nlattr *option_item;
2207 struct team_option *option = opt_inst->option;
2208 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
2209 struct team_gsetter_ctx ctx;
2212 ctx.info = opt_inst_info;
2213 err = team_option_get(team, opt_inst, &ctx);
2217 option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
2221 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
2223 if (opt_inst_info->port &&
2224 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
2225 opt_inst_info->port->dev->ifindex))
2227 if (opt_inst->option->array_size &&
2228 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
2229 opt_inst_info->array_index))
2232 switch (option->type) {
2233 case TEAM_OPTION_TYPE_U32:
2234 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
2236 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
2239 case TEAM_OPTION_TYPE_STRING:
2240 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
2242 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
2246 case TEAM_OPTION_TYPE_BINARY:
2247 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
2249 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
2250 ctx.data.bin_val.ptr))
2253 case TEAM_OPTION_TYPE_BOOL:
2254 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
2256 if (ctx.data.bool_val &&
2257 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
2260 case TEAM_OPTION_TYPE_S32:
2261 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32))
2263 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val))
2269 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
2271 if (opt_inst->changed) {
2272 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
2274 opt_inst->changed = false;
2276 nla_nest_end(skb, option_item);
2280 nla_nest_cancel(skb, option_item);
2284 static int __send_and_alloc_skb(struct sk_buff **pskb,
2285 struct team *team, u32 portid,
2286 team_nl_send_func_t *send_func)
2291 err = send_func(*pskb, team, portid);
2295 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2301 static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
2302 int flags, team_nl_send_func_t *send_func,
2303 struct list_head *sel_opt_inst_list)
2305 struct nlattr *option_list;
2306 struct nlmsghdr *nlh;
2308 struct team_option_inst *opt_inst;
2310 struct sk_buff *skb = NULL;
2314 opt_inst = list_first_entry(sel_opt_inst_list,
2315 struct team_option_inst, tmp_list);
2318 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2322 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2323 TEAM_CMD_OPTIONS_GET);
2327 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2328 goto nla_put_failure;
2329 option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION);
2331 goto nla_put_failure;
2335 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
2336 err = team_nl_fill_one_option_get(skb, team, opt_inst);
2338 if (err == -EMSGSIZE) {
2349 nla_nest_end(skb, option_list);
2350 genlmsg_end(skb, hdr);
2355 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2357 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2363 return send_func(skb, team, portid);
2368 genlmsg_cancel(skb, hdr);
2373 static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
2376 struct team_option_inst *opt_inst;
2378 LIST_HEAD(sel_opt_inst_list);
2380 team = team_nl_team_get(info);
2384 list_for_each_entry(opt_inst, &team->option_inst_list, list)
2385 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2386 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq,
2387 NLM_F_ACK, team_nl_send_unicast,
2388 &sel_opt_inst_list);
2390 team_nl_team_put(team);
2395 static int team_nl_send_event_options_get(struct team *team,
2396 struct list_head *sel_opt_inst_list);
2398 static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
2403 struct nlattr *nl_option;
2404 LIST_HEAD(opt_inst_list);
2406 team = team_nl_team_get(info);
2411 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
2416 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
2417 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
2418 struct nlattr *attr;
2419 struct nlattr *attr_data;
2420 enum team_option_type opt_type;
2421 int opt_port_ifindex = 0; /* != 0 for per-port options */
2422 u32 opt_array_index = 0;
2423 bool opt_is_array = false;
2424 struct team_option_inst *opt_inst;
2426 bool opt_found = false;
2428 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
2432 err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX,
2433 nl_option, team_nl_option_policy);
2436 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
2437 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
2441 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
2443 opt_type = TEAM_OPTION_TYPE_U32;
2446 opt_type = TEAM_OPTION_TYPE_STRING;
2449 opt_type = TEAM_OPTION_TYPE_BINARY;
2452 opt_type = TEAM_OPTION_TYPE_BOOL;
2455 opt_type = TEAM_OPTION_TYPE_S32;
2461 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
2462 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
2467 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
2468 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
2470 opt_port_ifindex = nla_get_u32(attr);
2472 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
2474 opt_is_array = true;
2475 opt_array_index = nla_get_u32(attr);
2478 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2479 struct team_option *option = opt_inst->option;
2480 struct team_gsetter_ctx ctx;
2481 struct team_option_inst_info *opt_inst_info;
2484 opt_inst_info = &opt_inst->info;
2485 tmp_ifindex = opt_inst_info->port ?
2486 opt_inst_info->port->dev->ifindex : 0;
2487 if (option->type != opt_type ||
2488 strcmp(option->name, opt_name) ||
2489 tmp_ifindex != opt_port_ifindex ||
2490 (option->array_size && !opt_is_array) ||
2491 opt_inst_info->array_index != opt_array_index)
2494 ctx.info = opt_inst_info;
2496 case TEAM_OPTION_TYPE_U32:
2497 ctx.data.u32_val = nla_get_u32(attr_data);
2499 case TEAM_OPTION_TYPE_STRING:
2500 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2504 ctx.data.str_val = nla_data(attr_data);
2506 case TEAM_OPTION_TYPE_BINARY:
2507 ctx.data.bin_val.len = nla_len(attr_data);
2508 ctx.data.bin_val.ptr = nla_data(attr_data);
2510 case TEAM_OPTION_TYPE_BOOL:
2511 ctx.data.bool_val = attr_data ? true : false;
2513 case TEAM_OPTION_TYPE_S32:
2514 ctx.data.s32_val = nla_get_s32(attr_data);
2519 err = team_option_set(team, opt_inst, &ctx);
2522 opt_inst->changed = true;
2523 list_add(&opt_inst->tmp_list, &opt_inst_list);
2531 err = team_nl_send_event_options_get(team, &opt_inst_list);
2534 team_nl_team_put(team);
2539 static int team_nl_fill_one_port_get(struct sk_buff *skb,
2540 struct team_port *port)
2542 struct nlattr *port_item;
2544 port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT);
2547 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2549 if (port->changed) {
2550 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2552 port->changed = false;
2554 if ((port->removed &&
2555 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2556 (port->state.linkup &&
2557 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2558 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2559 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2561 nla_nest_end(skb, port_item);
2565 nla_nest_cancel(skb, port_item);
2569 static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,
2570 int flags, team_nl_send_func_t *send_func,
2571 struct team_port *one_port)
2573 struct nlattr *port_list;
2574 struct nlmsghdr *nlh;
2576 struct team_port *port;
2578 struct sk_buff *skb = NULL;
2582 port = list_first_entry_or_null(&team->port_list,
2583 struct team_port, list);
2586 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2590 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2591 TEAM_CMD_PORT_LIST_GET);
2595 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2596 goto nla_put_failure;
2597 port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT);
2599 goto nla_put_failure;
2604 /* If one port is selected, called wants to send port list containing
2605 * only this port. Otherwise go through all listed ports and send all
2608 err = team_nl_fill_one_port_get(skb, one_port);
2612 list_for_each_entry_from(port, &team->port_list, list) {
2613 err = team_nl_fill_one_port_get(skb, port);
2615 if (err == -EMSGSIZE) {
2627 nla_nest_end(skb, port_list);
2628 genlmsg_end(skb, hdr);
2633 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2635 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2641 return send_func(skb, team, portid);
2646 genlmsg_cancel(skb, hdr);
2651 static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2652 struct genl_info *info)
2657 team = team_nl_team_get(info);
2661 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq,
2662 NLM_F_ACK, team_nl_send_unicast, NULL);
2664 team_nl_team_put(team);
2669 static const struct genl_ops team_nl_ops[] = {
2671 .cmd = TEAM_CMD_NOOP,
2672 .doit = team_nl_cmd_noop,
2673 .policy = team_nl_policy,
2676 .cmd = TEAM_CMD_OPTIONS_SET,
2677 .doit = team_nl_cmd_options_set,
2678 .policy = team_nl_policy,
2679 .flags = GENL_ADMIN_PERM,
2682 .cmd = TEAM_CMD_OPTIONS_GET,
2683 .doit = team_nl_cmd_options_get,
2684 .policy = team_nl_policy,
2685 .flags = GENL_ADMIN_PERM,
2688 .cmd = TEAM_CMD_PORT_LIST_GET,
2689 .doit = team_nl_cmd_port_list_get,
2690 .policy = team_nl_policy,
2691 .flags = GENL_ADMIN_PERM,
2695 static const struct genl_multicast_group team_nl_mcgrps[] = {
2696 { .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, },
2699 static int team_nl_send_multicast(struct sk_buff *skb,
2700 struct team *team, u32 portid)
2702 return genlmsg_multicast_netns(&team_nl_family, dev_net(team->dev),
2703 skb, 0, 0, GFP_KERNEL);
2706 static int team_nl_send_event_options_get(struct team *team,
2707 struct list_head *sel_opt_inst_list)
2709 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2713 static int team_nl_send_event_port_get(struct team *team,
2714 struct team_port *port)
2716 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast,
2720 static int team_nl_init(void)
2722 return genl_register_family_with_ops_groups(&team_nl_family, team_nl_ops,
2726 static void team_nl_fini(void)
2728 genl_unregister_family(&team_nl_family);
2736 static void __team_options_change_check(struct team *team)
2739 struct team_option_inst *opt_inst;
2740 LIST_HEAD(sel_opt_inst_list);
2742 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2743 if (opt_inst->changed)
2744 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2746 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
2747 if (err && err != -ESRCH)
2748 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2752 /* rtnl lock is held */
2754 static void __team_port_change_send(struct team_port *port, bool linkup)
2758 port->changed = true;
2759 port->state.linkup = linkup;
2760 team_refresh_port_linkup(port);
2762 struct ethtool_cmd ecmd;
2764 err = __ethtool_get_settings(port->dev, &ecmd);
2766 port->state.speed = ethtool_cmd_speed(&ecmd);
2767 port->state.duplex = ecmd.duplex;
2771 port->state.speed = 0;
2772 port->state.duplex = 0;
2775 err = team_nl_send_event_port_get(port->team, port);
2776 if (err && err != -ESRCH)
2777 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
2778 port->dev->name, err);
2782 static void __team_carrier_check(struct team *team)
2784 struct team_port *port;
2787 if (team->user_carrier_enabled)
2790 team_linkup = false;
2791 list_for_each_entry(port, &team->port_list, list) {
2799 netif_carrier_on(team->dev);
2801 netif_carrier_off(team->dev);
2804 static void __team_port_change_check(struct team_port *port, bool linkup)
2806 if (port->state.linkup != linkup)
2807 __team_port_change_send(port, linkup);
2808 __team_carrier_check(port->team);
2811 static void __team_port_change_port_added(struct team_port *port, bool linkup)
2813 __team_port_change_send(port, linkup);
2814 __team_carrier_check(port->team);
2817 static void __team_port_change_port_removed(struct team_port *port)
2819 port->removed = true;
2820 __team_port_change_send(port, false);
2821 __team_carrier_check(port->team);
2824 static void team_port_change_check(struct team_port *port, bool linkup)
2826 struct team *team = port->team;
2828 mutex_lock(&team->lock);
2829 __team_port_change_check(port, linkup);
2830 mutex_unlock(&team->lock);
2834 /************************************
2835 * Net device notifier event handler
2836 ************************************/
2838 static int team_device_event(struct notifier_block *unused,
2839 unsigned long event, void *ptr)
2841 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2842 struct team_port *port;
2844 port = team_port_get_rtnl(dev);
2850 if (netif_carrier_ok(dev))
2851 team_port_change_check(port, true);
2854 team_port_change_check(port, false);
2857 if (netif_running(port->dev))
2858 team_port_change_check(port,
2859 !!netif_carrier_ok(port->dev));
2861 case NETDEV_UNREGISTER:
2862 team_del_slave(port->team->dev, dev);
2864 case NETDEV_FEAT_CHANGE:
2865 team_compute_features(port->team);
2867 case NETDEV_PRECHANGEMTU:
2868 /* Forbid to change mtu of underlaying device */
2869 if (!port->team->port_mtu_change_allowed)
2872 case NETDEV_PRE_TYPE_CHANGE:
2873 /* Forbid to change type of underlaying device */
2875 case NETDEV_RESEND_IGMP:
2876 /* Propagate to master device */
2877 call_netdevice_notifiers(event, port->team->dev);
2883 static struct notifier_block team_notifier_block __read_mostly = {
2884 .notifier_call = team_device_event,
2888 /***********************
2889 * Module init and exit
2890 ***********************/
2892 static int __init team_module_init(void)
2896 register_netdevice_notifier(&team_notifier_block);
2898 err = rtnl_link_register(&team_link_ops);
2902 err = team_nl_init();
2909 rtnl_link_unregister(&team_link_ops);
2912 unregister_netdevice_notifier(&team_notifier_block);
2917 static void __exit team_module_exit(void)
2920 rtnl_link_unregister(&team_link_ops);
2921 unregister_netdevice_notifier(&team_notifier_block);
2924 module_init(team_module_init);
2925 module_exit(team_module_exit);
2927 MODULE_LICENSE("GPL v2");
2928 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
2929 MODULE_DESCRIPTION("Ethernet team device driver");
2930 MODULE_ALIAS_RTNL_LINK(DRV_NAME);