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)
1039 if (!team->dev->npinfo)
1042 np = kzalloc(sizeof(*np), GFP_KERNEL);
1046 err = __netpoll_setup(np, port->dev);
1055 static void team_port_disable_netpoll(struct team_port *port)
1057 struct netpoll *np = port->np;
1063 /* Wait for transmitting packets to finish before freeing. */
1064 synchronize_rcu_bh();
1065 __netpoll_cleanup(np);
1069 static int team_port_enable_netpoll(struct team *team, struct team_port *port)
1073 static void team_port_disable_netpoll(struct team_port *port)
1078 static void __team_port_change_port_added(struct team_port *port, bool linkup);
1079 static int team_dev_type_check_change(struct net_device *dev,
1080 struct net_device *port_dev);
1082 static int team_port_add(struct team *team, struct net_device *port_dev)
1084 struct net_device *dev = team->dev;
1085 struct team_port *port;
1086 char *portname = port_dev->name;
1089 if (port_dev->flags & IFF_LOOPBACK) {
1090 netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n",
1095 if (team_port_exists(port_dev)) {
1096 netdev_err(dev, "Device %s is already a port "
1097 "of a team device\n", portname);
1101 if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
1102 vlan_uses_dev(dev)) {
1103 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
1108 err = team_dev_type_check_change(dev, port_dev);
1112 if (port_dev->flags & IFF_UP) {
1113 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
1118 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size,
1123 port->dev = port_dev;
1125 INIT_LIST_HEAD(&port->qom_list);
1127 port->orig.mtu = port_dev->mtu;
1128 err = dev_set_mtu(port_dev, dev->mtu);
1130 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
1134 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len);
1136 err = team_port_enter(team, port);
1138 netdev_err(dev, "Device %s failed to enter team mode\n",
1140 goto err_port_enter;
1143 err = dev_open(port_dev);
1145 netdev_dbg(dev, "Device %s opening failed\n",
1150 err = vlan_vids_add_by_dev(port_dev, dev);
1152 netdev_err(dev, "Failed to add vlan ids to device %s\n",
1157 err = team_port_enable_netpoll(team, port);
1159 netdev_err(dev, "Failed to enable netpoll on device %s\n",
1161 goto err_enable_netpoll;
1164 err = netdev_master_upper_dev_link(port_dev, dev);
1166 netdev_err(dev, "Device %s failed to set upper link\n",
1168 goto err_set_upper_link;
1171 err = netdev_rx_handler_register(port_dev, team_handle_frame,
1174 netdev_err(dev, "Device %s failed to register rx_handler\n",
1176 goto err_handler_register;
1179 err = __team_option_inst_add_port(team, port);
1181 netdev_err(dev, "Device %s failed to add per-port options\n",
1183 goto err_option_port_add;
1187 list_add_tail_rcu(&port->list, &team->port_list);
1188 team_port_enable(team, port);
1189 __team_compute_features(team);
1190 __team_port_change_port_added(port, !!netif_carrier_ok(port_dev));
1191 __team_options_change_check(team);
1193 netdev_info(dev, "Port device %s added\n", portname);
1197 err_option_port_add:
1198 netdev_rx_handler_unregister(port_dev);
1200 err_handler_register:
1201 netdev_upper_dev_unlink(port_dev, dev);
1204 team_port_disable_netpoll(port);
1207 vlan_vids_del_by_dev(port_dev, dev);
1210 dev_close(port_dev);
1213 team_port_leave(team, port);
1214 team_port_set_orig_dev_addr(port);
1217 dev_set_mtu(port_dev, port->orig.mtu);
1225 static void __team_port_change_port_removed(struct team_port *port);
1227 static int team_port_del(struct team *team, struct net_device *port_dev)
1229 struct net_device *dev = team->dev;
1230 struct team_port *port;
1231 char *portname = port_dev->name;
1233 port = team_port_get_rtnl(port_dev);
1234 if (!port || !team_port_find(team, port)) {
1235 netdev_err(dev, "Device %s does not act as a port of this team\n",
1240 team_port_disable(team, port);
1241 list_del_rcu(&port->list);
1242 netdev_rx_handler_unregister(port_dev);
1243 netdev_upper_dev_unlink(port_dev, dev);
1244 team_port_disable_netpoll(port);
1245 vlan_vids_del_by_dev(port_dev, dev);
1246 dev_uc_unsync(port_dev, dev);
1247 dev_mc_unsync(port_dev, dev);
1248 dev_close(port_dev);
1249 team_port_leave(team, port);
1251 __team_option_inst_mark_removed_port(team, port);
1252 __team_options_change_check(team);
1253 __team_option_inst_del_port(team, port);
1254 __team_port_change_port_removed(port);
1256 team_port_set_orig_dev_addr(port);
1257 dev_set_mtu(port_dev, port->orig.mtu);
1258 kfree_rcu(port, rcu);
1259 netdev_info(dev, "Port device %s removed\n", portname);
1260 __team_compute_features(team);
1270 static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
1272 ctx->data.str_val = team->mode->kind;
1276 static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
1278 return team_change_mode(team, ctx->data.str_val);
1281 static int team_notify_peers_count_get(struct team *team,
1282 struct team_gsetter_ctx *ctx)
1284 ctx->data.u32_val = team->notify_peers.count;
1288 static int team_notify_peers_count_set(struct team *team,
1289 struct team_gsetter_ctx *ctx)
1291 team->notify_peers.count = ctx->data.u32_val;
1295 static int team_notify_peers_interval_get(struct team *team,
1296 struct team_gsetter_ctx *ctx)
1298 ctx->data.u32_val = team->notify_peers.interval;
1302 static int team_notify_peers_interval_set(struct team *team,
1303 struct team_gsetter_ctx *ctx)
1305 team->notify_peers.interval = ctx->data.u32_val;
1309 static int team_mcast_rejoin_count_get(struct team *team,
1310 struct team_gsetter_ctx *ctx)
1312 ctx->data.u32_val = team->mcast_rejoin.count;
1316 static int team_mcast_rejoin_count_set(struct team *team,
1317 struct team_gsetter_ctx *ctx)
1319 team->mcast_rejoin.count = ctx->data.u32_val;
1323 static int team_mcast_rejoin_interval_get(struct team *team,
1324 struct team_gsetter_ctx *ctx)
1326 ctx->data.u32_val = team->mcast_rejoin.interval;
1330 static int team_mcast_rejoin_interval_set(struct team *team,
1331 struct team_gsetter_ctx *ctx)
1333 team->mcast_rejoin.interval = ctx->data.u32_val;
1337 static int team_port_en_option_get(struct team *team,
1338 struct team_gsetter_ctx *ctx)
1340 struct team_port *port = ctx->info->port;
1342 ctx->data.bool_val = team_port_enabled(port);
1346 static int team_port_en_option_set(struct team *team,
1347 struct team_gsetter_ctx *ctx)
1349 struct team_port *port = ctx->info->port;
1351 if (ctx->data.bool_val)
1352 team_port_enable(team, port);
1354 team_port_disable(team, port);
1358 static int team_user_linkup_option_get(struct team *team,
1359 struct team_gsetter_ctx *ctx)
1361 struct team_port *port = ctx->info->port;
1363 ctx->data.bool_val = port->user.linkup;
1367 static void __team_carrier_check(struct team *team);
1369 static int team_user_linkup_option_set(struct team *team,
1370 struct team_gsetter_ctx *ctx)
1372 struct team_port *port = ctx->info->port;
1374 port->user.linkup = ctx->data.bool_val;
1375 team_refresh_port_linkup(port);
1376 __team_carrier_check(port->team);
1380 static int team_user_linkup_en_option_get(struct team *team,
1381 struct team_gsetter_ctx *ctx)
1383 struct team_port *port = ctx->info->port;
1385 ctx->data.bool_val = port->user.linkup_enabled;
1389 static int team_user_linkup_en_option_set(struct team *team,
1390 struct team_gsetter_ctx *ctx)
1392 struct team_port *port = ctx->info->port;
1394 port->user.linkup_enabled = ctx->data.bool_val;
1395 team_refresh_port_linkup(port);
1396 __team_carrier_check(port->team);
1400 static int team_priority_option_get(struct team *team,
1401 struct team_gsetter_ctx *ctx)
1403 struct team_port *port = ctx->info->port;
1405 ctx->data.s32_val = port->priority;
1409 static int team_priority_option_set(struct team *team,
1410 struct team_gsetter_ctx *ctx)
1412 struct team_port *port = ctx->info->port;
1413 s32 priority = ctx->data.s32_val;
1415 if (port->priority == priority)
1417 port->priority = priority;
1418 team_queue_override_port_prio_changed(team, port);
1422 static int team_queue_id_option_get(struct team *team,
1423 struct team_gsetter_ctx *ctx)
1425 struct team_port *port = ctx->info->port;
1427 ctx->data.u32_val = port->queue_id;
1431 static int team_queue_id_option_set(struct team *team,
1432 struct team_gsetter_ctx *ctx)
1434 struct team_port *port = ctx->info->port;
1435 u16 new_queue_id = ctx->data.u32_val;
1437 if (port->queue_id == new_queue_id)
1439 if (new_queue_id >= team->dev->real_num_tx_queues)
1441 team_queue_override_port_change_queue_id(team, port, new_queue_id);
1445 static const struct team_option team_options[] = {
1448 .type = TEAM_OPTION_TYPE_STRING,
1449 .getter = team_mode_option_get,
1450 .setter = team_mode_option_set,
1453 .name = "notify_peers_count",
1454 .type = TEAM_OPTION_TYPE_U32,
1455 .getter = team_notify_peers_count_get,
1456 .setter = team_notify_peers_count_set,
1459 .name = "notify_peers_interval",
1460 .type = TEAM_OPTION_TYPE_U32,
1461 .getter = team_notify_peers_interval_get,
1462 .setter = team_notify_peers_interval_set,
1465 .name = "mcast_rejoin_count",
1466 .type = TEAM_OPTION_TYPE_U32,
1467 .getter = team_mcast_rejoin_count_get,
1468 .setter = team_mcast_rejoin_count_set,
1471 .name = "mcast_rejoin_interval",
1472 .type = TEAM_OPTION_TYPE_U32,
1473 .getter = team_mcast_rejoin_interval_get,
1474 .setter = team_mcast_rejoin_interval_set,
1478 .type = TEAM_OPTION_TYPE_BOOL,
1480 .getter = team_port_en_option_get,
1481 .setter = team_port_en_option_set,
1484 .name = "user_linkup",
1485 .type = TEAM_OPTION_TYPE_BOOL,
1487 .getter = team_user_linkup_option_get,
1488 .setter = team_user_linkup_option_set,
1491 .name = "user_linkup_enabled",
1492 .type = TEAM_OPTION_TYPE_BOOL,
1494 .getter = team_user_linkup_en_option_get,
1495 .setter = team_user_linkup_en_option_set,
1499 .type = TEAM_OPTION_TYPE_S32,
1501 .getter = team_priority_option_get,
1502 .setter = team_priority_option_set,
1506 .type = TEAM_OPTION_TYPE_U32,
1508 .getter = team_queue_id_option_get,
1509 .setter = team_queue_id_option_set,
1513 static struct lock_class_key team_netdev_xmit_lock_key;
1514 static struct lock_class_key team_netdev_addr_lock_key;
1515 static struct lock_class_key team_tx_busylock_key;
1517 static void team_set_lockdep_class_one(struct net_device *dev,
1518 struct netdev_queue *txq,
1521 lockdep_set_class(&txq->_xmit_lock, &team_netdev_xmit_lock_key);
1524 static void team_set_lockdep_class(struct net_device *dev)
1526 lockdep_set_class(&dev->addr_list_lock, &team_netdev_addr_lock_key);
1527 netdev_for_each_tx_queue(dev, team_set_lockdep_class_one, NULL);
1528 dev->qdisc_tx_busylock = &team_tx_busylock_key;
1531 static int team_init(struct net_device *dev)
1533 struct team *team = netdev_priv(dev);
1538 mutex_init(&team->lock);
1539 team_set_no_mode(team);
1541 team->pcpu_stats = netdev_alloc_pcpu_stats(struct team_pcpu_stats);
1542 if (!team->pcpu_stats)
1545 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
1546 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
1547 INIT_LIST_HEAD(&team->port_list);
1548 err = team_queue_override_init(team);
1550 goto err_team_queue_override_init;
1552 team_adjust_ops(team);
1554 INIT_LIST_HEAD(&team->option_list);
1555 INIT_LIST_HEAD(&team->option_inst_list);
1557 team_notify_peers_init(team);
1558 team_mcast_rejoin_init(team);
1560 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1562 goto err_options_register;
1563 netif_carrier_off(dev);
1565 team_set_lockdep_class(dev);
1569 err_options_register:
1570 team_mcast_rejoin_fini(team);
1571 team_notify_peers_fini(team);
1572 team_queue_override_fini(team);
1573 err_team_queue_override_init:
1574 free_percpu(team->pcpu_stats);
1579 static void team_uninit(struct net_device *dev)
1581 struct team *team = netdev_priv(dev);
1582 struct team_port *port;
1583 struct team_port *tmp;
1585 mutex_lock(&team->lock);
1586 list_for_each_entry_safe(port, tmp, &team->port_list, list)
1587 team_port_del(team, port->dev);
1589 __team_change_mode(team, NULL); /* cleanup */
1590 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
1591 team_mcast_rejoin_fini(team);
1592 team_notify_peers_fini(team);
1593 team_queue_override_fini(team);
1594 mutex_unlock(&team->lock);
1597 static void team_destructor(struct net_device *dev)
1599 struct team *team = netdev_priv(dev);
1601 free_percpu(team->pcpu_stats);
1605 static int team_open(struct net_device *dev)
1610 static int team_close(struct net_device *dev)
1616 * note: already called with rcu_read_lock
1618 static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1620 struct team *team = netdev_priv(dev);
1622 unsigned int len = skb->len;
1624 tx_success = team_queue_override_transmit(team, skb);
1626 tx_success = team->ops.transmit(team, skb);
1628 struct team_pcpu_stats *pcpu_stats;
1630 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1631 u64_stats_update_begin(&pcpu_stats->syncp);
1632 pcpu_stats->tx_packets++;
1633 pcpu_stats->tx_bytes += len;
1634 u64_stats_update_end(&pcpu_stats->syncp);
1636 this_cpu_inc(team->pcpu_stats->tx_dropped);
1639 return NETDEV_TX_OK;
1642 static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb,
1643 void *accel_priv, select_queue_fallback_t fallback)
1646 * This helper function exists to help dev_pick_tx get the correct
1647 * destination queue. Using a helper function skips a call to
1648 * skb_tx_hash and will put the skbs in the queue we expect on their
1649 * way down to the team driver.
1651 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1654 * Save the original txq to restore before passing to the driver
1656 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1658 if (unlikely(txq >= dev->real_num_tx_queues)) {
1660 txq -= dev->real_num_tx_queues;
1661 } while (txq >= dev->real_num_tx_queues);
1666 static void team_change_rx_flags(struct net_device *dev, int change)
1668 struct team *team = netdev_priv(dev);
1669 struct team_port *port;
1673 list_for_each_entry_rcu(port, &team->port_list, list) {
1674 if (change & IFF_PROMISC) {
1675 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1676 dev_set_promiscuity(port->dev, inc);
1678 if (change & IFF_ALLMULTI) {
1679 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1680 dev_set_allmulti(port->dev, inc);
1686 static void team_set_rx_mode(struct net_device *dev)
1688 struct team *team = netdev_priv(dev);
1689 struct team_port *port;
1692 list_for_each_entry_rcu(port, &team->port_list, list) {
1693 dev_uc_sync_multiple(port->dev, dev);
1694 dev_mc_sync_multiple(port->dev, dev);
1699 static int team_set_mac_address(struct net_device *dev, void *p)
1701 struct sockaddr *addr = p;
1702 struct team *team = netdev_priv(dev);
1703 struct team_port *port;
1705 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data))
1706 return -EADDRNOTAVAIL;
1707 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1709 list_for_each_entry_rcu(port, &team->port_list, list)
1710 if (team->ops.port_change_dev_addr)
1711 team->ops.port_change_dev_addr(team, port);
1716 static int team_change_mtu(struct net_device *dev, int new_mtu)
1718 struct team *team = netdev_priv(dev);
1719 struct team_port *port;
1723 * Alhough this is reader, it's guarded by team lock. It's not possible
1724 * to traverse list in reverse under rcu_read_lock
1726 mutex_lock(&team->lock);
1727 list_for_each_entry(port, &team->port_list, list) {
1728 err = dev_set_mtu(port->dev, new_mtu);
1730 netdev_err(dev, "Device %s failed to change mtu",
1735 mutex_unlock(&team->lock);
1742 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1743 dev_set_mtu(port->dev, dev->mtu);
1744 mutex_unlock(&team->lock);
1749 static struct rtnl_link_stats64 *
1750 team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1752 struct team *team = netdev_priv(dev);
1753 struct team_pcpu_stats *p;
1754 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1755 u32 rx_dropped = 0, tx_dropped = 0;
1759 for_each_possible_cpu(i) {
1760 p = per_cpu_ptr(team->pcpu_stats, i);
1762 start = u64_stats_fetch_begin_irq(&p->syncp);
1763 rx_packets = p->rx_packets;
1764 rx_bytes = p->rx_bytes;
1765 rx_multicast = p->rx_multicast;
1766 tx_packets = p->tx_packets;
1767 tx_bytes = p->tx_bytes;
1768 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
1770 stats->rx_packets += rx_packets;
1771 stats->rx_bytes += rx_bytes;
1772 stats->multicast += rx_multicast;
1773 stats->tx_packets += tx_packets;
1774 stats->tx_bytes += tx_bytes;
1776 * rx_dropped & tx_dropped are u32, updated
1777 * without syncp protection.
1779 rx_dropped += p->rx_dropped;
1780 tx_dropped += p->tx_dropped;
1782 stats->rx_dropped = rx_dropped;
1783 stats->tx_dropped = tx_dropped;
1787 static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
1789 struct team *team = netdev_priv(dev);
1790 struct team_port *port;
1794 * Alhough this is reader, it's guarded by team lock. It's not possible
1795 * to traverse list in reverse under rcu_read_lock
1797 mutex_lock(&team->lock);
1798 list_for_each_entry(port, &team->port_list, list) {
1799 err = vlan_vid_add(port->dev, proto, vid);
1803 mutex_unlock(&team->lock);
1808 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1809 vlan_vid_del(port->dev, proto, vid);
1810 mutex_unlock(&team->lock);
1815 static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
1817 struct team *team = netdev_priv(dev);
1818 struct team_port *port;
1821 list_for_each_entry_rcu(port, &team->port_list, list)
1822 vlan_vid_del(port->dev, proto, vid);
1828 #ifdef CONFIG_NET_POLL_CONTROLLER
1829 static void team_poll_controller(struct net_device *dev)
1833 static void __team_netpoll_cleanup(struct team *team)
1835 struct team_port *port;
1837 list_for_each_entry(port, &team->port_list, list)
1838 team_port_disable_netpoll(port);
1841 static void team_netpoll_cleanup(struct net_device *dev)
1843 struct team *team = netdev_priv(dev);
1845 mutex_lock(&team->lock);
1846 __team_netpoll_cleanup(team);
1847 mutex_unlock(&team->lock);
1850 static int team_netpoll_setup(struct net_device *dev,
1851 struct netpoll_info *npifo)
1853 struct team *team = netdev_priv(dev);
1854 struct team_port *port;
1857 mutex_lock(&team->lock);
1858 list_for_each_entry(port, &team->port_list, list) {
1859 err = team_port_enable_netpoll(team, port);
1861 __team_netpoll_cleanup(team);
1865 mutex_unlock(&team->lock);
1870 static int team_add_slave(struct net_device *dev, struct net_device *port_dev)
1872 struct team *team = netdev_priv(dev);
1875 mutex_lock(&team->lock);
1876 err = team_port_add(team, port_dev);
1877 mutex_unlock(&team->lock);
1881 static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1883 struct team *team = netdev_priv(dev);
1886 mutex_lock(&team->lock);
1887 err = team_port_del(team, port_dev);
1888 mutex_unlock(&team->lock);
1892 static netdev_features_t team_fix_features(struct net_device *dev,
1893 netdev_features_t features)
1895 struct team_port *port;
1896 struct team *team = netdev_priv(dev);
1897 netdev_features_t mask;
1900 features &= ~NETIF_F_ONE_FOR_ALL;
1901 features |= NETIF_F_ALL_FOR_ALL;
1904 list_for_each_entry_rcu(port, &team->port_list, list) {
1905 features = netdev_increment_features(features,
1906 port->dev->features,
1913 static int team_change_carrier(struct net_device *dev, bool new_carrier)
1915 struct team *team = netdev_priv(dev);
1917 team->user_carrier_enabled = true;
1920 netif_carrier_on(dev);
1922 netif_carrier_off(dev);
1926 static const struct net_device_ops team_netdev_ops = {
1927 .ndo_init = team_init,
1928 .ndo_uninit = team_uninit,
1929 .ndo_open = team_open,
1930 .ndo_stop = team_close,
1931 .ndo_start_xmit = team_xmit,
1932 .ndo_select_queue = team_select_queue,
1933 .ndo_change_rx_flags = team_change_rx_flags,
1934 .ndo_set_rx_mode = team_set_rx_mode,
1935 .ndo_set_mac_address = team_set_mac_address,
1936 .ndo_change_mtu = team_change_mtu,
1937 .ndo_get_stats64 = team_get_stats64,
1938 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
1939 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
1940 #ifdef CONFIG_NET_POLL_CONTROLLER
1941 .ndo_poll_controller = team_poll_controller,
1942 .ndo_netpoll_setup = team_netpoll_setup,
1943 .ndo_netpoll_cleanup = team_netpoll_cleanup,
1945 .ndo_add_slave = team_add_slave,
1946 .ndo_del_slave = team_del_slave,
1947 .ndo_fix_features = team_fix_features,
1948 .ndo_change_carrier = team_change_carrier,
1951 /***********************
1953 ***********************/
1955 static void team_ethtool_get_drvinfo(struct net_device *dev,
1956 struct ethtool_drvinfo *drvinfo)
1958 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
1959 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
1962 static const struct ethtool_ops team_ethtool_ops = {
1963 .get_drvinfo = team_ethtool_get_drvinfo,
1964 .get_link = ethtool_op_get_link,
1967 /***********************
1968 * rt netlink interface
1969 ***********************/
1971 static void team_setup_by_port(struct net_device *dev,
1972 struct net_device *port_dev)
1974 dev->header_ops = port_dev->header_ops;
1975 dev->type = port_dev->type;
1976 dev->hard_header_len = port_dev->hard_header_len;
1977 dev->addr_len = port_dev->addr_len;
1978 dev->mtu = port_dev->mtu;
1979 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
1980 eth_hw_addr_inherit(dev, port_dev);
1983 static int team_dev_type_check_change(struct net_device *dev,
1984 struct net_device *port_dev)
1986 struct team *team = netdev_priv(dev);
1987 char *portname = port_dev->name;
1990 if (dev->type == port_dev->type)
1992 if (!list_empty(&team->port_list)) {
1993 netdev_err(dev, "Device %s is of different type\n", portname);
1996 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev);
1997 err = notifier_to_errno(err);
1999 netdev_err(dev, "Refused to change device type\n");
2004 team_setup_by_port(dev, port_dev);
2005 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev);
2009 static void team_setup(struct net_device *dev)
2013 dev->netdev_ops = &team_netdev_ops;
2014 dev->ethtool_ops = &team_ethtool_ops;
2015 dev->destructor = team_destructor;
2016 dev->tx_queue_len = 0;
2017 dev->flags |= IFF_MULTICAST;
2018 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
2021 * Indicate we support unicast address filtering. That way core won't
2022 * bring us to promisc mode in case a unicast addr is added.
2023 * Let this up to underlay drivers.
2025 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
2027 dev->features |= NETIF_F_LLTX;
2028 dev->features |= NETIF_F_GRO;
2030 /* Don't allow team devices to change network namespaces. */
2031 dev->features |= NETIF_F_NETNS_LOCAL;
2033 dev->hw_features = TEAM_VLAN_FEATURES |
2034 NETIF_F_HW_VLAN_CTAG_TX |
2035 NETIF_F_HW_VLAN_CTAG_RX |
2036 NETIF_F_HW_VLAN_CTAG_FILTER;
2038 dev->hw_features &= ~(NETIF_F_ALL_CSUM & ~NETIF_F_HW_CSUM);
2039 dev->features |= dev->hw_features;
2042 static int team_newlink(struct net *src_net, struct net_device *dev,
2043 struct nlattr *tb[], struct nlattr *data[])
2047 if (tb[IFLA_ADDRESS] == NULL)
2048 eth_hw_addr_random(dev);
2050 err = register_netdevice(dev);
2057 static int team_validate(struct nlattr *tb[], struct nlattr *data[])
2059 if (tb[IFLA_ADDRESS]) {
2060 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
2062 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
2063 return -EADDRNOTAVAIL;
2068 static unsigned int team_get_num_tx_queues(void)
2070 return TEAM_DEFAULT_NUM_TX_QUEUES;
2073 static unsigned int team_get_num_rx_queues(void)
2075 return TEAM_DEFAULT_NUM_RX_QUEUES;
2078 static struct rtnl_link_ops team_link_ops __read_mostly = {
2080 .priv_size = sizeof(struct team),
2081 .setup = team_setup,
2082 .newlink = team_newlink,
2083 .validate = team_validate,
2084 .get_num_tx_queues = team_get_num_tx_queues,
2085 .get_num_rx_queues = team_get_num_rx_queues,
2089 /***********************************
2090 * Generic netlink custom interface
2091 ***********************************/
2093 static struct genl_family team_nl_family = {
2094 .id = GENL_ID_GENERATE,
2095 .name = TEAM_GENL_NAME,
2096 .version = TEAM_GENL_VERSION,
2097 .maxattr = TEAM_ATTR_MAX,
2101 static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
2102 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
2103 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
2104 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
2105 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
2108 static const struct nla_policy
2109 team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
2110 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
2111 [TEAM_ATTR_OPTION_NAME] = {
2113 .len = TEAM_STRING_MAX_LEN,
2115 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
2116 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
2117 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
2120 static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
2122 struct sk_buff *msg;
2126 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2130 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
2131 &team_nl_family, 0, TEAM_CMD_NOOP);
2137 genlmsg_end(msg, hdr);
2139 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid);
2148 * Netlink cmd functions should be locked by following two functions.
2149 * Since dev gets held here, that ensures dev won't disappear in between.
2151 static struct team *team_nl_team_get(struct genl_info *info)
2153 struct net *net = genl_info_net(info);
2155 struct net_device *dev;
2158 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
2161 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
2162 dev = dev_get_by_index(net, ifindex);
2163 if (!dev || dev->netdev_ops != &team_netdev_ops) {
2169 team = netdev_priv(dev);
2170 mutex_lock(&team->lock);
2174 static void team_nl_team_put(struct team *team)
2176 mutex_unlock(&team->lock);
2180 typedef int team_nl_send_func_t(struct sk_buff *skb,
2181 struct team *team, u32 portid);
2183 static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid)
2185 return genlmsg_unicast(dev_net(team->dev), skb, portid);
2188 static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
2189 struct team_option_inst *opt_inst)
2191 struct nlattr *option_item;
2192 struct team_option *option = opt_inst->option;
2193 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
2194 struct team_gsetter_ctx ctx;
2197 ctx.info = opt_inst_info;
2198 err = team_option_get(team, opt_inst, &ctx);
2202 option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
2206 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
2208 if (opt_inst_info->port &&
2209 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
2210 opt_inst_info->port->dev->ifindex))
2212 if (opt_inst->option->array_size &&
2213 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
2214 opt_inst_info->array_index))
2217 switch (option->type) {
2218 case TEAM_OPTION_TYPE_U32:
2219 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
2221 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
2224 case TEAM_OPTION_TYPE_STRING:
2225 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
2227 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
2231 case TEAM_OPTION_TYPE_BINARY:
2232 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
2234 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
2235 ctx.data.bin_val.ptr))
2238 case TEAM_OPTION_TYPE_BOOL:
2239 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
2241 if (ctx.data.bool_val &&
2242 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
2245 case TEAM_OPTION_TYPE_S32:
2246 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32))
2248 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val))
2254 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
2256 if (opt_inst->changed) {
2257 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
2259 opt_inst->changed = false;
2261 nla_nest_end(skb, option_item);
2265 nla_nest_cancel(skb, option_item);
2269 static int __send_and_alloc_skb(struct sk_buff **pskb,
2270 struct team *team, u32 portid,
2271 team_nl_send_func_t *send_func)
2276 err = send_func(*pskb, team, portid);
2280 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2286 static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
2287 int flags, team_nl_send_func_t *send_func,
2288 struct list_head *sel_opt_inst_list)
2290 struct nlattr *option_list;
2291 struct nlmsghdr *nlh;
2293 struct team_option_inst *opt_inst;
2295 struct sk_buff *skb = NULL;
2299 opt_inst = list_first_entry(sel_opt_inst_list,
2300 struct team_option_inst, tmp_list);
2303 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2307 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2308 TEAM_CMD_OPTIONS_GET);
2312 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2313 goto nla_put_failure;
2314 option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION);
2316 goto nla_put_failure;
2320 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
2321 err = team_nl_fill_one_option_get(skb, team, opt_inst);
2323 if (err == -EMSGSIZE) {
2334 nla_nest_end(skb, option_list);
2335 genlmsg_end(skb, hdr);
2340 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2342 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2348 return send_func(skb, team, portid);
2353 genlmsg_cancel(skb, hdr);
2358 static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
2361 struct team_option_inst *opt_inst;
2363 LIST_HEAD(sel_opt_inst_list);
2365 team = team_nl_team_get(info);
2369 list_for_each_entry(opt_inst, &team->option_inst_list, list)
2370 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2371 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq,
2372 NLM_F_ACK, team_nl_send_unicast,
2373 &sel_opt_inst_list);
2375 team_nl_team_put(team);
2380 static int team_nl_send_event_options_get(struct team *team,
2381 struct list_head *sel_opt_inst_list);
2383 static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
2388 struct nlattr *nl_option;
2389 LIST_HEAD(opt_inst_list);
2391 team = team_nl_team_get(info);
2396 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
2401 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
2402 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
2403 struct nlattr *attr;
2404 struct nlattr *attr_data;
2405 enum team_option_type opt_type;
2406 int opt_port_ifindex = 0; /* != 0 for per-port options */
2407 u32 opt_array_index = 0;
2408 bool opt_is_array = false;
2409 struct team_option_inst *opt_inst;
2411 bool opt_found = false;
2413 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
2417 err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX,
2418 nl_option, team_nl_option_policy);
2421 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
2422 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
2426 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
2428 opt_type = TEAM_OPTION_TYPE_U32;
2431 opt_type = TEAM_OPTION_TYPE_STRING;
2434 opt_type = TEAM_OPTION_TYPE_BINARY;
2437 opt_type = TEAM_OPTION_TYPE_BOOL;
2440 opt_type = TEAM_OPTION_TYPE_S32;
2446 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
2447 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
2452 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
2453 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
2455 opt_port_ifindex = nla_get_u32(attr);
2457 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
2459 opt_is_array = true;
2460 opt_array_index = nla_get_u32(attr);
2463 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2464 struct team_option *option = opt_inst->option;
2465 struct team_gsetter_ctx ctx;
2466 struct team_option_inst_info *opt_inst_info;
2469 opt_inst_info = &opt_inst->info;
2470 tmp_ifindex = opt_inst_info->port ?
2471 opt_inst_info->port->dev->ifindex : 0;
2472 if (option->type != opt_type ||
2473 strcmp(option->name, opt_name) ||
2474 tmp_ifindex != opt_port_ifindex ||
2475 (option->array_size && !opt_is_array) ||
2476 opt_inst_info->array_index != opt_array_index)
2479 ctx.info = opt_inst_info;
2481 case TEAM_OPTION_TYPE_U32:
2482 ctx.data.u32_val = nla_get_u32(attr_data);
2484 case TEAM_OPTION_TYPE_STRING:
2485 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2489 ctx.data.str_val = nla_data(attr_data);
2491 case TEAM_OPTION_TYPE_BINARY:
2492 ctx.data.bin_val.len = nla_len(attr_data);
2493 ctx.data.bin_val.ptr = nla_data(attr_data);
2495 case TEAM_OPTION_TYPE_BOOL:
2496 ctx.data.bool_val = attr_data ? true : false;
2498 case TEAM_OPTION_TYPE_S32:
2499 ctx.data.s32_val = nla_get_s32(attr_data);
2504 err = team_option_set(team, opt_inst, &ctx);
2507 opt_inst->changed = true;
2508 list_add(&opt_inst->tmp_list, &opt_inst_list);
2516 err = team_nl_send_event_options_get(team, &opt_inst_list);
2519 team_nl_team_put(team);
2524 static int team_nl_fill_one_port_get(struct sk_buff *skb,
2525 struct team_port *port)
2527 struct nlattr *port_item;
2529 port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT);
2532 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2534 if (port->changed) {
2535 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2537 port->changed = false;
2539 if ((port->removed &&
2540 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2541 (port->state.linkup &&
2542 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2543 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2544 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2546 nla_nest_end(skb, port_item);
2550 nla_nest_cancel(skb, port_item);
2554 static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,
2555 int flags, team_nl_send_func_t *send_func,
2556 struct team_port *one_port)
2558 struct nlattr *port_list;
2559 struct nlmsghdr *nlh;
2561 struct team_port *port;
2563 struct sk_buff *skb = NULL;
2567 port = list_first_entry_or_null(&team->port_list,
2568 struct team_port, list);
2571 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2575 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2576 TEAM_CMD_PORT_LIST_GET);
2580 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2581 goto nla_put_failure;
2582 port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT);
2584 goto nla_put_failure;
2589 /* If one port is selected, called wants to send port list containing
2590 * only this port. Otherwise go through all listed ports and send all
2593 err = team_nl_fill_one_port_get(skb, one_port);
2597 list_for_each_entry_from(port, &team->port_list, list) {
2598 err = team_nl_fill_one_port_get(skb, port);
2600 if (err == -EMSGSIZE) {
2612 nla_nest_end(skb, port_list);
2613 genlmsg_end(skb, hdr);
2618 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2620 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2626 return send_func(skb, team, portid);
2631 genlmsg_cancel(skb, hdr);
2636 static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2637 struct genl_info *info)
2642 team = team_nl_team_get(info);
2646 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq,
2647 NLM_F_ACK, team_nl_send_unicast, NULL);
2649 team_nl_team_put(team);
2654 static const struct genl_ops team_nl_ops[] = {
2656 .cmd = TEAM_CMD_NOOP,
2657 .doit = team_nl_cmd_noop,
2658 .policy = team_nl_policy,
2661 .cmd = TEAM_CMD_OPTIONS_SET,
2662 .doit = team_nl_cmd_options_set,
2663 .policy = team_nl_policy,
2664 .flags = GENL_ADMIN_PERM,
2667 .cmd = TEAM_CMD_OPTIONS_GET,
2668 .doit = team_nl_cmd_options_get,
2669 .policy = team_nl_policy,
2670 .flags = GENL_ADMIN_PERM,
2673 .cmd = TEAM_CMD_PORT_LIST_GET,
2674 .doit = team_nl_cmd_port_list_get,
2675 .policy = team_nl_policy,
2676 .flags = GENL_ADMIN_PERM,
2680 static const struct genl_multicast_group team_nl_mcgrps[] = {
2681 { .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, },
2684 static int team_nl_send_multicast(struct sk_buff *skb,
2685 struct team *team, u32 portid)
2687 return genlmsg_multicast_netns(&team_nl_family, dev_net(team->dev),
2688 skb, 0, 0, GFP_KERNEL);
2691 static int team_nl_send_event_options_get(struct team *team,
2692 struct list_head *sel_opt_inst_list)
2694 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2698 static int team_nl_send_event_port_get(struct team *team,
2699 struct team_port *port)
2701 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast,
2705 static int team_nl_init(void)
2707 return genl_register_family_with_ops_groups(&team_nl_family, team_nl_ops,
2711 static void team_nl_fini(void)
2713 genl_unregister_family(&team_nl_family);
2721 static void __team_options_change_check(struct team *team)
2724 struct team_option_inst *opt_inst;
2725 LIST_HEAD(sel_opt_inst_list);
2727 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2728 if (opt_inst->changed)
2729 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2731 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
2732 if (err && err != -ESRCH)
2733 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2737 /* rtnl lock is held */
2739 static void __team_port_change_send(struct team_port *port, bool linkup)
2743 port->changed = true;
2744 port->state.linkup = linkup;
2745 team_refresh_port_linkup(port);
2747 struct ethtool_cmd ecmd;
2749 err = __ethtool_get_settings(port->dev, &ecmd);
2751 port->state.speed = ethtool_cmd_speed(&ecmd);
2752 port->state.duplex = ecmd.duplex;
2756 port->state.speed = 0;
2757 port->state.duplex = 0;
2760 err = team_nl_send_event_port_get(port->team, port);
2761 if (err && err != -ESRCH)
2762 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
2763 port->dev->name, err);
2767 static void __team_carrier_check(struct team *team)
2769 struct team_port *port;
2772 if (team->user_carrier_enabled)
2775 team_linkup = false;
2776 list_for_each_entry(port, &team->port_list, list) {
2784 netif_carrier_on(team->dev);
2786 netif_carrier_off(team->dev);
2789 static void __team_port_change_check(struct team_port *port, bool linkup)
2791 if (port->state.linkup != linkup)
2792 __team_port_change_send(port, linkup);
2793 __team_carrier_check(port->team);
2796 static void __team_port_change_port_added(struct team_port *port, bool linkup)
2798 __team_port_change_send(port, linkup);
2799 __team_carrier_check(port->team);
2802 static void __team_port_change_port_removed(struct team_port *port)
2804 port->removed = true;
2805 __team_port_change_send(port, false);
2806 __team_carrier_check(port->team);
2809 static void team_port_change_check(struct team_port *port, bool linkup)
2811 struct team *team = port->team;
2813 mutex_lock(&team->lock);
2814 __team_port_change_check(port, linkup);
2815 mutex_unlock(&team->lock);
2819 /************************************
2820 * Net device notifier event handler
2821 ************************************/
2823 static int team_device_event(struct notifier_block *unused,
2824 unsigned long event, void *ptr)
2826 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2827 struct team_port *port;
2829 port = team_port_get_rtnl(dev);
2835 if (netif_carrier_ok(dev))
2836 team_port_change_check(port, true);
2838 team_port_change_check(port, false);
2840 if (netif_running(port->dev))
2841 team_port_change_check(port,
2842 !!netif_carrier_ok(port->dev));
2844 case NETDEV_UNREGISTER:
2845 team_del_slave(port->team->dev, dev);
2847 case NETDEV_FEAT_CHANGE:
2848 team_compute_features(port->team);
2850 case NETDEV_PRECHANGEMTU:
2851 /* Forbid to change mtu of underlaying device */
2853 case NETDEV_PRE_TYPE_CHANGE:
2854 /* Forbid to change type of underlaying device */
2856 case NETDEV_RESEND_IGMP:
2857 /* Propagate to master device */
2858 call_netdevice_notifiers(event, port->team->dev);
2864 static struct notifier_block team_notifier_block __read_mostly = {
2865 .notifier_call = team_device_event,
2869 /***********************
2870 * Module init and exit
2871 ***********************/
2873 static int __init team_module_init(void)
2877 register_netdevice_notifier(&team_notifier_block);
2879 err = rtnl_link_register(&team_link_ops);
2883 err = team_nl_init();
2890 rtnl_link_unregister(&team_link_ops);
2893 unregister_netdevice_notifier(&team_notifier_block);
2898 static void __exit team_module_exit(void)
2901 rtnl_link_unregister(&team_link_ops);
2902 unregister_netdevice_notifier(&team_notifier_block);
2905 module_init(team_module_init);
2906 module_exit(team_module_exit);
2908 MODULE_LICENSE("GPL v2");
2909 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
2910 MODULE_DESCRIPTION("Ethernet team device driver");
2911 MODULE_ALIAS_RTNL_LINK(DRV_NAME);