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_set(&team->notify_peers.count_pending, team->notify_peers.count);
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_set(&team->mcast_rejoin.count_pending, team->mcast_rejoin.count);
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;
972 unsigned short max_hard_header_len = ETH_HLEN;
973 unsigned int flags, dst_release_flag = IFF_XMIT_DST_RELEASE;
975 list_for_each_entry(port, &team->port_list, list) {
976 vlan_features = netdev_increment_features(vlan_features,
977 port->dev->vlan_features,
980 dst_release_flag &= port->dev->priv_flags;
981 if (port->dev->hard_header_len > max_hard_header_len)
982 max_hard_header_len = port->dev->hard_header_len;
985 team->dev->vlan_features = vlan_features;
986 team->dev->hard_header_len = max_hard_header_len;
988 flags = team->dev->priv_flags & ~IFF_XMIT_DST_RELEASE;
989 team->dev->priv_flags = flags | dst_release_flag;
991 netdev_change_features(team->dev);
994 static void team_compute_features(struct team *team)
996 mutex_lock(&team->lock);
997 __team_compute_features(team);
998 mutex_unlock(&team->lock);
1001 static int team_port_enter(struct team *team, struct team_port *port)
1005 dev_hold(team->dev);
1006 port->dev->priv_flags |= IFF_TEAM_PORT;
1007 if (team->ops.port_enter) {
1008 err = team->ops.port_enter(team, port);
1010 netdev_err(team->dev, "Device %s failed to enter team mode\n",
1012 goto err_port_enter;
1019 port->dev->priv_flags &= ~IFF_TEAM_PORT;
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);
1029 port->dev->priv_flags &= ~IFF_TEAM_PORT;
1033 #ifdef CONFIG_NET_POLL_CONTROLLER
1034 static int team_port_enable_netpoll(struct team *team, struct team_port *port,
1040 if (!team->dev->npinfo)
1043 np = kzalloc(sizeof(*np), gfp);
1047 err = __netpoll_setup(np, port->dev, gfp);
1056 static void team_port_disable_netpoll(struct team_port *port)
1058 struct netpoll *np = port->np;
1064 /* Wait for transmitting packets to finish before freeing. */
1065 synchronize_rcu_bh();
1066 __netpoll_cleanup(np);
1070 static int team_port_enable_netpoll(struct team *team, struct team_port *port,
1075 static void team_port_disable_netpoll(struct team_port *port)
1080 static void __team_port_change_port_added(struct team_port *port, bool linkup);
1081 static int team_dev_type_check_change(struct net_device *dev,
1082 struct net_device *port_dev);
1084 static int team_port_add(struct team *team, struct net_device *port_dev)
1086 struct net_device *dev = team->dev;
1087 struct team_port *port;
1088 char *portname = port_dev->name;
1091 if (port_dev->flags & IFF_LOOPBACK) {
1092 netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n",
1097 if (team_port_exists(port_dev)) {
1098 netdev_err(dev, "Device %s is already a port "
1099 "of a team device\n", portname);
1103 if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
1104 vlan_uses_dev(dev)) {
1105 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
1110 err = team_dev_type_check_change(dev, port_dev);
1114 if (port_dev->flags & IFF_UP) {
1115 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
1120 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size,
1125 port->dev = port_dev;
1127 INIT_LIST_HEAD(&port->qom_list);
1129 port->orig.mtu = port_dev->mtu;
1130 err = dev_set_mtu(port_dev, dev->mtu);
1132 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
1136 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len);
1138 err = team_port_enter(team, port);
1140 netdev_err(dev, "Device %s failed to enter team mode\n",
1142 goto err_port_enter;
1145 err = dev_open(port_dev);
1147 netdev_dbg(dev, "Device %s opening failed\n",
1152 err = vlan_vids_add_by_dev(port_dev, dev);
1154 netdev_err(dev, "Failed to add vlan ids to device %s\n",
1159 err = team_port_enable_netpoll(team, port, GFP_KERNEL);
1161 netdev_err(dev, "Failed to enable netpoll on device %s\n",
1163 goto err_enable_netpoll;
1166 err = netdev_master_upper_dev_link(port_dev, dev);
1168 netdev_err(dev, "Device %s failed to set upper link\n",
1170 goto err_set_upper_link;
1173 err = netdev_rx_handler_register(port_dev, team_handle_frame,
1176 netdev_err(dev, "Device %s failed to register rx_handler\n",
1178 goto err_handler_register;
1181 err = __team_option_inst_add_port(team, port);
1183 netdev_err(dev, "Device %s failed to add per-port options\n",
1185 goto err_option_port_add;
1189 list_add_tail_rcu(&port->list, &team->port_list);
1190 team_port_enable(team, port);
1191 __team_compute_features(team);
1192 __team_port_change_port_added(port, !!netif_carrier_ok(port_dev));
1193 __team_options_change_check(team);
1195 netdev_info(dev, "Port device %s added\n", portname);
1199 err_option_port_add:
1200 netdev_rx_handler_unregister(port_dev);
1202 err_handler_register:
1203 netdev_upper_dev_unlink(port_dev, dev);
1206 team_port_disable_netpoll(port);
1209 vlan_vids_del_by_dev(port_dev, dev);
1212 dev_close(port_dev);
1215 team_port_leave(team, port);
1216 team_port_set_orig_dev_addr(port);
1219 dev_set_mtu(port_dev, port->orig.mtu);
1227 static void __team_port_change_port_removed(struct team_port *port);
1229 static int team_port_del(struct team *team, struct net_device *port_dev)
1231 struct net_device *dev = team->dev;
1232 struct team_port *port;
1233 char *portname = port_dev->name;
1235 port = team_port_get_rtnl(port_dev);
1236 if (!port || !team_port_find(team, port)) {
1237 netdev_err(dev, "Device %s does not act as a port of this team\n",
1242 team_port_disable(team, port);
1243 list_del_rcu(&port->list);
1244 netdev_rx_handler_unregister(port_dev);
1245 netdev_upper_dev_unlink(port_dev, dev);
1246 team_port_disable_netpoll(port);
1247 vlan_vids_del_by_dev(port_dev, dev);
1248 dev_uc_unsync(port_dev, dev);
1249 dev_mc_unsync(port_dev, dev);
1250 dev_close(port_dev);
1251 team_port_leave(team, port);
1253 __team_option_inst_mark_removed_port(team, port);
1254 __team_options_change_check(team);
1255 __team_option_inst_del_port(team, port);
1256 __team_port_change_port_removed(port);
1258 team_port_set_orig_dev_addr(port);
1259 dev_set_mtu(port_dev, port->orig.mtu);
1260 kfree_rcu(port, rcu);
1261 netdev_info(dev, "Port device %s removed\n", portname);
1262 __team_compute_features(team);
1272 static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
1274 ctx->data.str_val = team->mode->kind;
1278 static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
1280 return team_change_mode(team, ctx->data.str_val);
1283 static int team_notify_peers_count_get(struct team *team,
1284 struct team_gsetter_ctx *ctx)
1286 ctx->data.u32_val = team->notify_peers.count;
1290 static int team_notify_peers_count_set(struct team *team,
1291 struct team_gsetter_ctx *ctx)
1293 team->notify_peers.count = ctx->data.u32_val;
1297 static int team_notify_peers_interval_get(struct team *team,
1298 struct team_gsetter_ctx *ctx)
1300 ctx->data.u32_val = team->notify_peers.interval;
1304 static int team_notify_peers_interval_set(struct team *team,
1305 struct team_gsetter_ctx *ctx)
1307 team->notify_peers.interval = ctx->data.u32_val;
1311 static int team_mcast_rejoin_count_get(struct team *team,
1312 struct team_gsetter_ctx *ctx)
1314 ctx->data.u32_val = team->mcast_rejoin.count;
1318 static int team_mcast_rejoin_count_set(struct team *team,
1319 struct team_gsetter_ctx *ctx)
1321 team->mcast_rejoin.count = ctx->data.u32_val;
1325 static int team_mcast_rejoin_interval_get(struct team *team,
1326 struct team_gsetter_ctx *ctx)
1328 ctx->data.u32_val = team->mcast_rejoin.interval;
1332 static int team_mcast_rejoin_interval_set(struct team *team,
1333 struct team_gsetter_ctx *ctx)
1335 team->mcast_rejoin.interval = ctx->data.u32_val;
1339 static int team_port_en_option_get(struct team *team,
1340 struct team_gsetter_ctx *ctx)
1342 struct team_port *port = ctx->info->port;
1344 ctx->data.bool_val = team_port_enabled(port);
1348 static int team_port_en_option_set(struct team *team,
1349 struct team_gsetter_ctx *ctx)
1351 struct team_port *port = ctx->info->port;
1353 if (ctx->data.bool_val)
1354 team_port_enable(team, port);
1356 team_port_disable(team, port);
1360 static int team_user_linkup_option_get(struct team *team,
1361 struct team_gsetter_ctx *ctx)
1363 struct team_port *port = ctx->info->port;
1365 ctx->data.bool_val = port->user.linkup;
1369 static void __team_carrier_check(struct team *team);
1371 static int team_user_linkup_option_set(struct team *team,
1372 struct team_gsetter_ctx *ctx)
1374 struct team_port *port = ctx->info->port;
1376 port->user.linkup = ctx->data.bool_val;
1377 team_refresh_port_linkup(port);
1378 __team_carrier_check(port->team);
1382 static int team_user_linkup_en_option_get(struct team *team,
1383 struct team_gsetter_ctx *ctx)
1385 struct team_port *port = ctx->info->port;
1387 ctx->data.bool_val = port->user.linkup_enabled;
1391 static int team_user_linkup_en_option_set(struct team *team,
1392 struct team_gsetter_ctx *ctx)
1394 struct team_port *port = ctx->info->port;
1396 port->user.linkup_enabled = ctx->data.bool_val;
1397 team_refresh_port_linkup(port);
1398 __team_carrier_check(port->team);
1402 static int team_priority_option_get(struct team *team,
1403 struct team_gsetter_ctx *ctx)
1405 struct team_port *port = ctx->info->port;
1407 ctx->data.s32_val = port->priority;
1411 static int team_priority_option_set(struct team *team,
1412 struct team_gsetter_ctx *ctx)
1414 struct team_port *port = ctx->info->port;
1415 s32 priority = ctx->data.s32_val;
1417 if (port->priority == priority)
1419 port->priority = priority;
1420 team_queue_override_port_prio_changed(team, port);
1424 static int team_queue_id_option_get(struct team *team,
1425 struct team_gsetter_ctx *ctx)
1427 struct team_port *port = ctx->info->port;
1429 ctx->data.u32_val = port->queue_id;
1433 static int team_queue_id_option_set(struct team *team,
1434 struct team_gsetter_ctx *ctx)
1436 struct team_port *port = ctx->info->port;
1437 u16 new_queue_id = ctx->data.u32_val;
1439 if (port->queue_id == new_queue_id)
1441 if (new_queue_id >= team->dev->real_num_tx_queues)
1443 team_queue_override_port_change_queue_id(team, port, new_queue_id);
1447 static const struct team_option team_options[] = {
1450 .type = TEAM_OPTION_TYPE_STRING,
1451 .getter = team_mode_option_get,
1452 .setter = team_mode_option_set,
1455 .name = "notify_peers_count",
1456 .type = TEAM_OPTION_TYPE_U32,
1457 .getter = team_notify_peers_count_get,
1458 .setter = team_notify_peers_count_set,
1461 .name = "notify_peers_interval",
1462 .type = TEAM_OPTION_TYPE_U32,
1463 .getter = team_notify_peers_interval_get,
1464 .setter = team_notify_peers_interval_set,
1467 .name = "mcast_rejoin_count",
1468 .type = TEAM_OPTION_TYPE_U32,
1469 .getter = team_mcast_rejoin_count_get,
1470 .setter = team_mcast_rejoin_count_set,
1473 .name = "mcast_rejoin_interval",
1474 .type = TEAM_OPTION_TYPE_U32,
1475 .getter = team_mcast_rejoin_interval_get,
1476 .setter = team_mcast_rejoin_interval_set,
1480 .type = TEAM_OPTION_TYPE_BOOL,
1482 .getter = team_port_en_option_get,
1483 .setter = team_port_en_option_set,
1486 .name = "user_linkup",
1487 .type = TEAM_OPTION_TYPE_BOOL,
1489 .getter = team_user_linkup_option_get,
1490 .setter = team_user_linkup_option_set,
1493 .name = "user_linkup_enabled",
1494 .type = TEAM_OPTION_TYPE_BOOL,
1496 .getter = team_user_linkup_en_option_get,
1497 .setter = team_user_linkup_en_option_set,
1501 .type = TEAM_OPTION_TYPE_S32,
1503 .getter = team_priority_option_get,
1504 .setter = team_priority_option_set,
1508 .type = TEAM_OPTION_TYPE_U32,
1510 .getter = team_queue_id_option_get,
1511 .setter = team_queue_id_option_set,
1515 static struct lock_class_key team_netdev_xmit_lock_key;
1516 static struct lock_class_key team_netdev_addr_lock_key;
1517 static struct lock_class_key team_tx_busylock_key;
1519 static void team_set_lockdep_class_one(struct net_device *dev,
1520 struct netdev_queue *txq,
1523 lockdep_set_class(&txq->_xmit_lock, &team_netdev_xmit_lock_key);
1526 static void team_set_lockdep_class(struct net_device *dev)
1528 lockdep_set_class(&dev->addr_list_lock, &team_netdev_addr_lock_key);
1529 netdev_for_each_tx_queue(dev, team_set_lockdep_class_one, NULL);
1530 dev->qdisc_tx_busylock = &team_tx_busylock_key;
1533 static int team_init(struct net_device *dev)
1535 struct team *team = netdev_priv(dev);
1540 mutex_init(&team->lock);
1541 team_set_no_mode(team);
1543 team->pcpu_stats = alloc_percpu(struct team_pcpu_stats);
1544 if (!team->pcpu_stats)
1547 for_each_possible_cpu(i) {
1548 struct team_pcpu_stats *team_stats;
1549 team_stats = per_cpu_ptr(team->pcpu_stats, i);
1550 u64_stats_init(&team_stats->syncp);
1553 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
1554 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
1555 INIT_LIST_HEAD(&team->port_list);
1556 err = team_queue_override_init(team);
1558 goto err_team_queue_override_init;
1560 team_adjust_ops(team);
1562 INIT_LIST_HEAD(&team->option_list);
1563 INIT_LIST_HEAD(&team->option_inst_list);
1565 team_notify_peers_init(team);
1566 team_mcast_rejoin_init(team);
1568 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1570 goto err_options_register;
1571 netif_carrier_off(dev);
1573 team_set_lockdep_class(dev);
1577 err_options_register:
1578 team_mcast_rejoin_fini(team);
1579 team_notify_peers_fini(team);
1580 team_queue_override_fini(team);
1581 err_team_queue_override_init:
1582 free_percpu(team->pcpu_stats);
1587 static void team_uninit(struct net_device *dev)
1589 struct team *team = netdev_priv(dev);
1590 struct team_port *port;
1591 struct team_port *tmp;
1593 mutex_lock(&team->lock);
1594 list_for_each_entry_safe(port, tmp, &team->port_list, list)
1595 team_port_del(team, port->dev);
1597 __team_change_mode(team, NULL); /* cleanup */
1598 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
1599 team_mcast_rejoin_fini(team);
1600 team_notify_peers_fini(team);
1601 team_queue_override_fini(team);
1602 mutex_unlock(&team->lock);
1605 static void team_destructor(struct net_device *dev)
1607 struct team *team = netdev_priv(dev);
1609 free_percpu(team->pcpu_stats);
1613 static int team_open(struct net_device *dev)
1618 static int team_close(struct net_device *dev)
1624 * note: already called with rcu_read_lock
1626 static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1628 struct team *team = netdev_priv(dev);
1630 unsigned int len = skb->len;
1632 tx_success = team_queue_override_transmit(team, skb);
1634 tx_success = team->ops.transmit(team, skb);
1636 struct team_pcpu_stats *pcpu_stats;
1638 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1639 u64_stats_update_begin(&pcpu_stats->syncp);
1640 pcpu_stats->tx_packets++;
1641 pcpu_stats->tx_bytes += len;
1642 u64_stats_update_end(&pcpu_stats->syncp);
1644 this_cpu_inc(team->pcpu_stats->tx_dropped);
1647 return NETDEV_TX_OK;
1650 static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb)
1653 * This helper function exists to help dev_pick_tx get the correct
1654 * destination queue. Using a helper function skips a call to
1655 * skb_tx_hash and will put the skbs in the queue we expect on their
1656 * way down to the team driver.
1658 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1661 * Save the original txq to restore before passing to the driver
1663 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1665 if (unlikely(txq >= dev->real_num_tx_queues)) {
1667 txq -= dev->real_num_tx_queues;
1668 } while (txq >= dev->real_num_tx_queues);
1673 static void team_change_rx_flags(struct net_device *dev, int change)
1675 struct team *team = netdev_priv(dev);
1676 struct team_port *port;
1680 list_for_each_entry_rcu(port, &team->port_list, list) {
1681 if (change & IFF_PROMISC) {
1682 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1683 dev_set_promiscuity(port->dev, inc);
1685 if (change & IFF_ALLMULTI) {
1686 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1687 dev_set_allmulti(port->dev, inc);
1693 static void team_set_rx_mode(struct net_device *dev)
1695 struct team *team = netdev_priv(dev);
1696 struct team_port *port;
1699 list_for_each_entry_rcu(port, &team->port_list, list) {
1700 dev_uc_sync_multiple(port->dev, dev);
1701 dev_mc_sync_multiple(port->dev, dev);
1706 static int team_set_mac_address(struct net_device *dev, void *p)
1708 struct sockaddr *addr = p;
1709 struct team *team = netdev_priv(dev);
1710 struct team_port *port;
1712 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data))
1713 return -EADDRNOTAVAIL;
1714 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1716 list_for_each_entry_rcu(port, &team->port_list, list)
1717 if (team->ops.port_change_dev_addr)
1718 team->ops.port_change_dev_addr(team, port);
1723 static int team_change_mtu(struct net_device *dev, int new_mtu)
1725 struct team *team = netdev_priv(dev);
1726 struct team_port *port;
1730 * Alhough this is reader, it's guarded by team lock. It's not possible
1731 * to traverse list in reverse under rcu_read_lock
1733 mutex_lock(&team->lock);
1734 list_for_each_entry(port, &team->port_list, list) {
1735 err = dev_set_mtu(port->dev, new_mtu);
1737 netdev_err(dev, "Device %s failed to change mtu",
1742 mutex_unlock(&team->lock);
1749 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1750 dev_set_mtu(port->dev, dev->mtu);
1751 mutex_unlock(&team->lock);
1756 static struct rtnl_link_stats64 *
1757 team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1759 struct team *team = netdev_priv(dev);
1760 struct team_pcpu_stats *p;
1761 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1762 u32 rx_dropped = 0, tx_dropped = 0;
1766 for_each_possible_cpu(i) {
1767 p = per_cpu_ptr(team->pcpu_stats, i);
1769 start = u64_stats_fetch_begin_bh(&p->syncp);
1770 rx_packets = p->rx_packets;
1771 rx_bytes = p->rx_bytes;
1772 rx_multicast = p->rx_multicast;
1773 tx_packets = p->tx_packets;
1774 tx_bytes = p->tx_bytes;
1775 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
1777 stats->rx_packets += rx_packets;
1778 stats->rx_bytes += rx_bytes;
1779 stats->multicast += rx_multicast;
1780 stats->tx_packets += tx_packets;
1781 stats->tx_bytes += tx_bytes;
1783 * rx_dropped & tx_dropped are u32, updated
1784 * without syncp protection.
1786 rx_dropped += p->rx_dropped;
1787 tx_dropped += p->tx_dropped;
1789 stats->rx_dropped = rx_dropped;
1790 stats->tx_dropped = tx_dropped;
1794 static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
1796 struct team *team = netdev_priv(dev);
1797 struct team_port *port;
1801 * Alhough this is reader, it's guarded by team lock. It's not possible
1802 * to traverse list in reverse under rcu_read_lock
1804 mutex_lock(&team->lock);
1805 list_for_each_entry(port, &team->port_list, list) {
1806 err = vlan_vid_add(port->dev, proto, vid);
1810 mutex_unlock(&team->lock);
1815 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1816 vlan_vid_del(port->dev, proto, vid);
1817 mutex_unlock(&team->lock);
1822 static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
1824 struct team *team = netdev_priv(dev);
1825 struct team_port *port;
1828 list_for_each_entry_rcu(port, &team->port_list, list)
1829 vlan_vid_del(port->dev, proto, vid);
1835 #ifdef CONFIG_NET_POLL_CONTROLLER
1836 static void team_poll_controller(struct net_device *dev)
1840 static void __team_netpoll_cleanup(struct team *team)
1842 struct team_port *port;
1844 list_for_each_entry(port, &team->port_list, list)
1845 team_port_disable_netpoll(port);
1848 static void team_netpoll_cleanup(struct net_device *dev)
1850 struct team *team = netdev_priv(dev);
1852 mutex_lock(&team->lock);
1853 __team_netpoll_cleanup(team);
1854 mutex_unlock(&team->lock);
1857 static int team_netpoll_setup(struct net_device *dev,
1858 struct netpoll_info *npifo, gfp_t gfp)
1860 struct team *team = netdev_priv(dev);
1861 struct team_port *port;
1864 mutex_lock(&team->lock);
1865 list_for_each_entry(port, &team->port_list, list) {
1866 err = team_port_enable_netpoll(team, port, gfp);
1868 __team_netpoll_cleanup(team);
1872 mutex_unlock(&team->lock);
1877 static int team_add_slave(struct net_device *dev, struct net_device *port_dev)
1879 struct team *team = netdev_priv(dev);
1882 mutex_lock(&team->lock);
1883 err = team_port_add(team, port_dev);
1884 mutex_unlock(&team->lock);
1888 static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1890 struct team *team = netdev_priv(dev);
1893 mutex_lock(&team->lock);
1894 err = team_port_del(team, port_dev);
1895 mutex_unlock(&team->lock);
1899 static netdev_features_t team_fix_features(struct net_device *dev,
1900 netdev_features_t features)
1902 struct team_port *port;
1903 struct team *team = netdev_priv(dev);
1904 netdev_features_t mask;
1907 features &= ~NETIF_F_ONE_FOR_ALL;
1908 features |= NETIF_F_ALL_FOR_ALL;
1911 list_for_each_entry_rcu(port, &team->port_list, list) {
1912 features = netdev_increment_features(features,
1913 port->dev->features,
1920 static int team_change_carrier(struct net_device *dev, bool new_carrier)
1922 struct team *team = netdev_priv(dev);
1924 team->user_carrier_enabled = true;
1927 netif_carrier_on(dev);
1929 netif_carrier_off(dev);
1933 static const struct net_device_ops team_netdev_ops = {
1934 .ndo_init = team_init,
1935 .ndo_uninit = team_uninit,
1936 .ndo_open = team_open,
1937 .ndo_stop = team_close,
1938 .ndo_start_xmit = team_xmit,
1939 .ndo_select_queue = team_select_queue,
1940 .ndo_change_rx_flags = team_change_rx_flags,
1941 .ndo_set_rx_mode = team_set_rx_mode,
1942 .ndo_set_mac_address = team_set_mac_address,
1943 .ndo_change_mtu = team_change_mtu,
1944 .ndo_get_stats64 = team_get_stats64,
1945 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
1946 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
1947 #ifdef CONFIG_NET_POLL_CONTROLLER
1948 .ndo_poll_controller = team_poll_controller,
1949 .ndo_netpoll_setup = team_netpoll_setup,
1950 .ndo_netpoll_cleanup = team_netpoll_cleanup,
1952 .ndo_add_slave = team_add_slave,
1953 .ndo_del_slave = team_del_slave,
1954 .ndo_fix_features = team_fix_features,
1955 .ndo_change_carrier = team_change_carrier,
1958 /***********************
1960 ***********************/
1962 static void team_ethtool_get_drvinfo(struct net_device *dev,
1963 struct ethtool_drvinfo *drvinfo)
1965 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
1966 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
1969 static const struct ethtool_ops team_ethtool_ops = {
1970 .get_drvinfo = team_ethtool_get_drvinfo,
1971 .get_link = ethtool_op_get_link,
1974 /***********************
1975 * rt netlink interface
1976 ***********************/
1978 static void team_setup_by_port(struct net_device *dev,
1979 struct net_device *port_dev)
1981 dev->header_ops = port_dev->header_ops;
1982 dev->type = port_dev->type;
1983 dev->hard_header_len = port_dev->hard_header_len;
1984 dev->addr_len = port_dev->addr_len;
1985 dev->mtu = port_dev->mtu;
1986 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
1987 eth_hw_addr_inherit(dev, port_dev);
1990 static int team_dev_type_check_change(struct net_device *dev,
1991 struct net_device *port_dev)
1993 struct team *team = netdev_priv(dev);
1994 char *portname = port_dev->name;
1997 if (dev->type == port_dev->type)
1999 if (!list_empty(&team->port_list)) {
2000 netdev_err(dev, "Device %s is of different type\n", portname);
2003 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev);
2004 err = notifier_to_errno(err);
2006 netdev_err(dev, "Refused to change device type\n");
2011 team_setup_by_port(dev, port_dev);
2012 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev);
2016 static void team_setup(struct net_device *dev)
2020 dev->netdev_ops = &team_netdev_ops;
2021 dev->ethtool_ops = &team_ethtool_ops;
2022 dev->destructor = team_destructor;
2023 dev->tx_queue_len = 0;
2024 dev->flags |= IFF_MULTICAST;
2025 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
2028 * Indicate we support unicast address filtering. That way core won't
2029 * bring us to promisc mode in case a unicast addr is added.
2030 * Let this up to underlay drivers.
2032 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
2034 dev->features |= NETIF_F_LLTX;
2035 dev->features |= NETIF_F_GRO;
2036 dev->hw_features = TEAM_VLAN_FEATURES |
2037 NETIF_F_HW_VLAN_CTAG_TX |
2038 NETIF_F_HW_VLAN_CTAG_RX |
2039 NETIF_F_HW_VLAN_CTAG_FILTER;
2041 dev->hw_features &= ~(NETIF_F_ALL_CSUM & ~NETIF_F_HW_CSUM);
2042 dev->features |= dev->hw_features;
2045 static int team_newlink(struct net *src_net, struct net_device *dev,
2046 struct nlattr *tb[], struct nlattr *data[])
2050 if (tb[IFLA_ADDRESS] == NULL)
2051 eth_hw_addr_random(dev);
2053 err = register_netdevice(dev);
2060 static int team_validate(struct nlattr *tb[], struct nlattr *data[])
2062 if (tb[IFLA_ADDRESS]) {
2063 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
2065 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
2066 return -EADDRNOTAVAIL;
2071 static unsigned int team_get_num_tx_queues(void)
2073 return TEAM_DEFAULT_NUM_TX_QUEUES;
2076 static unsigned int team_get_num_rx_queues(void)
2078 return TEAM_DEFAULT_NUM_RX_QUEUES;
2081 static struct rtnl_link_ops team_link_ops __read_mostly = {
2083 .priv_size = sizeof(struct team),
2084 .setup = team_setup,
2085 .newlink = team_newlink,
2086 .validate = team_validate,
2087 .get_num_tx_queues = team_get_num_tx_queues,
2088 .get_num_rx_queues = team_get_num_rx_queues,
2092 /***********************************
2093 * Generic netlink custom interface
2094 ***********************************/
2096 static struct genl_family team_nl_family = {
2097 .id = GENL_ID_GENERATE,
2098 .name = TEAM_GENL_NAME,
2099 .version = TEAM_GENL_VERSION,
2100 .maxattr = TEAM_ATTR_MAX,
2104 static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
2105 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
2106 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
2107 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
2108 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
2111 static const struct nla_policy
2112 team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
2113 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
2114 [TEAM_ATTR_OPTION_NAME] = {
2116 .len = TEAM_STRING_MAX_LEN,
2118 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
2119 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
2120 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
2123 static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
2125 struct sk_buff *msg;
2129 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2133 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
2134 &team_nl_family, 0, TEAM_CMD_NOOP);
2140 genlmsg_end(msg, hdr);
2142 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid);
2151 * Netlink cmd functions should be locked by following two functions.
2152 * Since dev gets held here, that ensures dev won't disappear in between.
2154 static struct team *team_nl_team_get(struct genl_info *info)
2156 struct net *net = genl_info_net(info);
2158 struct net_device *dev;
2161 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
2164 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
2165 dev = dev_get_by_index(net, ifindex);
2166 if (!dev || dev->netdev_ops != &team_netdev_ops) {
2172 team = netdev_priv(dev);
2173 mutex_lock(&team->lock);
2177 static void team_nl_team_put(struct team *team)
2179 mutex_unlock(&team->lock);
2183 typedef int team_nl_send_func_t(struct sk_buff *skb,
2184 struct team *team, u32 portid);
2186 static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid)
2188 return genlmsg_unicast(dev_net(team->dev), skb, portid);
2191 static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
2192 struct team_option_inst *opt_inst)
2194 struct nlattr *option_item;
2195 struct team_option *option = opt_inst->option;
2196 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
2197 struct team_gsetter_ctx ctx;
2200 ctx.info = opt_inst_info;
2201 err = team_option_get(team, opt_inst, &ctx);
2205 option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
2209 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
2211 if (opt_inst_info->port &&
2212 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
2213 opt_inst_info->port->dev->ifindex))
2215 if (opt_inst->option->array_size &&
2216 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
2217 opt_inst_info->array_index))
2220 switch (option->type) {
2221 case TEAM_OPTION_TYPE_U32:
2222 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
2224 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
2227 case TEAM_OPTION_TYPE_STRING:
2228 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
2230 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
2234 case TEAM_OPTION_TYPE_BINARY:
2235 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
2237 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
2238 ctx.data.bin_val.ptr))
2241 case TEAM_OPTION_TYPE_BOOL:
2242 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
2244 if (ctx.data.bool_val &&
2245 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
2248 case TEAM_OPTION_TYPE_S32:
2249 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32))
2251 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val))
2257 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
2259 if (opt_inst->changed) {
2260 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
2262 opt_inst->changed = false;
2264 nla_nest_end(skb, option_item);
2268 nla_nest_cancel(skb, option_item);
2272 static int __send_and_alloc_skb(struct sk_buff **pskb,
2273 struct team *team, u32 portid,
2274 team_nl_send_func_t *send_func)
2279 err = send_func(*pskb, team, portid);
2283 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2289 static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
2290 int flags, team_nl_send_func_t *send_func,
2291 struct list_head *sel_opt_inst_list)
2293 struct nlattr *option_list;
2294 struct nlmsghdr *nlh;
2296 struct team_option_inst *opt_inst;
2298 struct sk_buff *skb = NULL;
2302 opt_inst = list_first_entry(sel_opt_inst_list,
2303 struct team_option_inst, tmp_list);
2306 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2310 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2311 TEAM_CMD_OPTIONS_GET);
2315 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2316 goto nla_put_failure;
2317 option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION);
2319 goto nla_put_failure;
2323 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
2324 err = team_nl_fill_one_option_get(skb, team, opt_inst);
2326 if (err == -EMSGSIZE) {
2337 nla_nest_end(skb, option_list);
2338 genlmsg_end(skb, hdr);
2343 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2345 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2351 return send_func(skb, team, portid);
2356 genlmsg_cancel(skb, hdr);
2361 static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
2364 struct team_option_inst *opt_inst;
2366 LIST_HEAD(sel_opt_inst_list);
2368 team = team_nl_team_get(info);
2372 list_for_each_entry(opt_inst, &team->option_inst_list, list)
2373 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2374 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq,
2375 NLM_F_ACK, team_nl_send_unicast,
2376 &sel_opt_inst_list);
2378 team_nl_team_put(team);
2383 static int team_nl_send_event_options_get(struct team *team,
2384 struct list_head *sel_opt_inst_list);
2386 static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
2391 struct nlattr *nl_option;
2392 LIST_HEAD(opt_inst_list);
2394 team = team_nl_team_get(info);
2399 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
2404 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
2405 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
2406 struct nlattr *attr;
2407 struct nlattr *attr_data;
2408 enum team_option_type opt_type;
2409 int opt_port_ifindex = 0; /* != 0 for per-port options */
2410 u32 opt_array_index = 0;
2411 bool opt_is_array = false;
2412 struct team_option_inst *opt_inst;
2414 bool opt_found = false;
2416 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
2420 err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX,
2421 nl_option, team_nl_option_policy);
2424 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
2425 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
2429 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
2431 opt_type = TEAM_OPTION_TYPE_U32;
2434 opt_type = TEAM_OPTION_TYPE_STRING;
2437 opt_type = TEAM_OPTION_TYPE_BINARY;
2440 opt_type = TEAM_OPTION_TYPE_BOOL;
2443 opt_type = TEAM_OPTION_TYPE_S32;
2449 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
2450 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
2455 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
2456 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
2458 opt_port_ifindex = nla_get_u32(attr);
2460 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
2462 opt_is_array = true;
2463 opt_array_index = nla_get_u32(attr);
2466 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2467 struct team_option *option = opt_inst->option;
2468 struct team_gsetter_ctx ctx;
2469 struct team_option_inst_info *opt_inst_info;
2472 opt_inst_info = &opt_inst->info;
2473 tmp_ifindex = opt_inst_info->port ?
2474 opt_inst_info->port->dev->ifindex : 0;
2475 if (option->type != opt_type ||
2476 strcmp(option->name, opt_name) ||
2477 tmp_ifindex != opt_port_ifindex ||
2478 (option->array_size && !opt_is_array) ||
2479 opt_inst_info->array_index != opt_array_index)
2482 ctx.info = opt_inst_info;
2484 case TEAM_OPTION_TYPE_U32:
2485 ctx.data.u32_val = nla_get_u32(attr_data);
2487 case TEAM_OPTION_TYPE_STRING:
2488 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2492 ctx.data.str_val = nla_data(attr_data);
2494 case TEAM_OPTION_TYPE_BINARY:
2495 ctx.data.bin_val.len = nla_len(attr_data);
2496 ctx.data.bin_val.ptr = nla_data(attr_data);
2498 case TEAM_OPTION_TYPE_BOOL:
2499 ctx.data.bool_val = attr_data ? true : false;
2501 case TEAM_OPTION_TYPE_S32:
2502 ctx.data.s32_val = nla_get_s32(attr_data);
2507 err = team_option_set(team, opt_inst, &ctx);
2510 opt_inst->changed = true;
2511 list_add(&opt_inst->tmp_list, &opt_inst_list);
2519 err = team_nl_send_event_options_get(team, &opt_inst_list);
2522 team_nl_team_put(team);
2527 static int team_nl_fill_one_port_get(struct sk_buff *skb,
2528 struct team_port *port)
2530 struct nlattr *port_item;
2532 port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT);
2535 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2537 if (port->changed) {
2538 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2540 port->changed = false;
2542 if ((port->removed &&
2543 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2544 (port->state.linkup &&
2545 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2546 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2547 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2549 nla_nest_end(skb, port_item);
2553 nla_nest_cancel(skb, port_item);
2557 static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,
2558 int flags, team_nl_send_func_t *send_func,
2559 struct team_port *one_port)
2561 struct nlattr *port_list;
2562 struct nlmsghdr *nlh;
2564 struct team_port *port;
2566 struct sk_buff *skb = NULL;
2570 port = list_first_entry_or_null(&team->port_list,
2571 struct team_port, list);
2574 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2578 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2579 TEAM_CMD_PORT_LIST_GET);
2583 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2584 goto nla_put_failure;
2585 port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT);
2587 goto nla_put_failure;
2592 /* If one port is selected, called wants to send port list containing
2593 * only this port. Otherwise go through all listed ports and send all
2596 err = team_nl_fill_one_port_get(skb, one_port);
2600 list_for_each_entry_from(port, &team->port_list, list) {
2601 err = team_nl_fill_one_port_get(skb, port);
2603 if (err == -EMSGSIZE) {
2615 nla_nest_end(skb, port_list);
2616 genlmsg_end(skb, hdr);
2621 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2623 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2629 return send_func(skb, team, portid);
2634 genlmsg_cancel(skb, hdr);
2639 static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2640 struct genl_info *info)
2645 team = team_nl_team_get(info);
2649 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq,
2650 NLM_F_ACK, team_nl_send_unicast, NULL);
2652 team_nl_team_put(team);
2657 static const struct genl_ops team_nl_ops[] = {
2659 .cmd = TEAM_CMD_NOOP,
2660 .doit = team_nl_cmd_noop,
2661 .policy = team_nl_policy,
2664 .cmd = TEAM_CMD_OPTIONS_SET,
2665 .doit = team_nl_cmd_options_set,
2666 .policy = team_nl_policy,
2667 .flags = GENL_ADMIN_PERM,
2670 .cmd = TEAM_CMD_OPTIONS_GET,
2671 .doit = team_nl_cmd_options_get,
2672 .policy = team_nl_policy,
2673 .flags = GENL_ADMIN_PERM,
2676 .cmd = TEAM_CMD_PORT_LIST_GET,
2677 .doit = team_nl_cmd_port_list_get,
2678 .policy = team_nl_policy,
2679 .flags = GENL_ADMIN_PERM,
2683 static const struct genl_multicast_group team_nl_mcgrps[] = {
2684 { .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, },
2687 static int team_nl_send_multicast(struct sk_buff *skb,
2688 struct team *team, u32 portid)
2690 return genlmsg_multicast_netns(&team_nl_family, dev_net(team->dev),
2691 skb, 0, 0, GFP_KERNEL);
2694 static int team_nl_send_event_options_get(struct team *team,
2695 struct list_head *sel_opt_inst_list)
2697 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2701 static int team_nl_send_event_port_get(struct team *team,
2702 struct team_port *port)
2704 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast,
2708 static int team_nl_init(void)
2710 return genl_register_family_with_ops_groups(&team_nl_family, team_nl_ops,
2714 static void team_nl_fini(void)
2716 genl_unregister_family(&team_nl_family);
2724 static void __team_options_change_check(struct team *team)
2727 struct team_option_inst *opt_inst;
2728 LIST_HEAD(sel_opt_inst_list);
2730 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2731 if (opt_inst->changed)
2732 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2734 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
2735 if (err && err != -ESRCH)
2736 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2740 /* rtnl lock is held */
2742 static void __team_port_change_send(struct team_port *port, bool linkup)
2746 port->changed = true;
2747 port->state.linkup = linkup;
2748 team_refresh_port_linkup(port);
2750 struct ethtool_cmd ecmd;
2752 err = __ethtool_get_settings(port->dev, &ecmd);
2754 port->state.speed = ethtool_cmd_speed(&ecmd);
2755 port->state.duplex = ecmd.duplex;
2759 port->state.speed = 0;
2760 port->state.duplex = 0;
2763 err = team_nl_send_event_port_get(port->team, port);
2764 if (err && err != -ESRCH)
2765 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
2766 port->dev->name, err);
2770 static void __team_carrier_check(struct team *team)
2772 struct team_port *port;
2775 if (team->user_carrier_enabled)
2778 team_linkup = false;
2779 list_for_each_entry(port, &team->port_list, list) {
2787 netif_carrier_on(team->dev);
2789 netif_carrier_off(team->dev);
2792 static void __team_port_change_check(struct team_port *port, bool linkup)
2794 if (port->state.linkup != linkup)
2795 __team_port_change_send(port, linkup);
2796 __team_carrier_check(port->team);
2799 static void __team_port_change_port_added(struct team_port *port, bool linkup)
2801 __team_port_change_send(port, linkup);
2802 __team_carrier_check(port->team);
2805 static void __team_port_change_port_removed(struct team_port *port)
2807 port->removed = true;
2808 __team_port_change_send(port, false);
2809 __team_carrier_check(port->team);
2812 static void team_port_change_check(struct team_port *port, bool linkup)
2814 struct team *team = port->team;
2816 mutex_lock(&team->lock);
2817 __team_port_change_check(port, linkup);
2818 mutex_unlock(&team->lock);
2822 /************************************
2823 * Net device notifier event handler
2824 ************************************/
2826 static int team_device_event(struct notifier_block *unused,
2827 unsigned long event, void *ptr)
2829 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2830 struct team_port *port;
2832 port = team_port_get_rtnl(dev);
2838 if (netif_carrier_ok(dev))
2839 team_port_change_check(port, true);
2841 team_port_change_check(port, false);
2843 if (netif_running(port->dev))
2844 team_port_change_check(port,
2845 !!netif_carrier_ok(port->dev));
2847 case NETDEV_UNREGISTER:
2848 team_del_slave(port->team->dev, dev);
2850 case NETDEV_FEAT_CHANGE:
2851 team_compute_features(port->team);
2853 case NETDEV_CHANGEMTU:
2854 /* Forbid to change mtu of underlaying device */
2856 case NETDEV_PRE_TYPE_CHANGE:
2857 /* Forbid to change type of underlaying device */
2859 case NETDEV_RESEND_IGMP:
2860 /* Propagate to master device */
2861 call_netdevice_notifiers(event, port->team->dev);
2867 static struct notifier_block team_notifier_block __read_mostly = {
2868 .notifier_call = team_device_event,
2872 /***********************
2873 * Module init and exit
2874 ***********************/
2876 static int __init team_module_init(void)
2880 register_netdevice_notifier(&team_notifier_block);
2882 err = rtnl_link_register(&team_link_ops);
2886 err = team_nl_init();
2893 rtnl_link_unregister(&team_link_ops);
2896 unregister_netdevice_notifier(&team_notifier_block);
2901 static void __exit team_module_exit(void)
2904 rtnl_link_unregister(&team_link_ops);
2905 unregister_netdevice_notifier(&team_notifier_block);
2908 module_init(team_module_init);
2909 module_exit(team_module_exit);
2911 MODULE_LICENSE("GPL v2");
2912 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
2913 MODULE_DESCRIPTION("Ethernet team device driver");
2914 MODULE_ALIAS_RTNL_LINK(DRV_NAME);