2 * net/drivers/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/if_vlan.h>
22 #include <linux/if_arp.h>
23 #include <linux/socket.h>
24 #include <linux/etherdevice.h>
25 #include <linux/rtnetlink.h>
26 #include <net/rtnetlink.h>
27 #include <net/genetlink.h>
28 #include <net/netlink.h>
29 #include <linux/if_team.h>
31 #define DRV_NAME "team"
38 #define team_port_exists(dev) (dev->priv_flags & IFF_TEAM_PORT)
40 static struct team_port *team_port_get_rcu(const struct net_device *dev)
42 struct team_port *port = rcu_dereference(dev->rx_handler_data);
44 return team_port_exists(dev) ? port : NULL;
47 static struct team_port *team_port_get_rtnl(const struct net_device *dev)
49 struct team_port *port = rtnl_dereference(dev->rx_handler_data);
51 return team_port_exists(dev) ? port : NULL;
55 * Since the ability to change mac address for open port device is tested in
56 * team_port_add, this function can be called without control of return value
58 static int __set_port_mac(struct net_device *port_dev,
59 const unsigned char *dev_addr)
63 memcpy(addr.sa_data, dev_addr, ETH_ALEN);
64 addr.sa_family = ARPHRD_ETHER;
65 return dev_set_mac_address(port_dev, &addr);
68 int team_port_set_orig_mac(struct team_port *port)
70 return __set_port_mac(port->dev, port->orig.dev_addr);
73 int team_port_set_team_mac(struct team_port *port)
75 return __set_port_mac(port->dev, port->team->dev->dev_addr);
77 EXPORT_SYMBOL(team_port_set_team_mac);
79 static void team_refresh_port_linkup(struct team_port *port)
81 port->linkup = port->user.linkup_enabled ? port->user.linkup :
89 struct team_option_inst { /* One for each option instance */
90 struct list_head list;
91 struct team_option *option;
92 struct team_port *port; /* != NULL if per-port */
97 static struct team_option *__team_find_option(struct team *team,
100 struct team_option *option;
102 list_for_each_entry(option, &team->option_list, list) {
103 if (strcmp(option->name, opt_name) == 0)
109 static int __team_option_inst_add(struct team *team, struct team_option *option,
110 struct team_port *port)
112 struct team_option_inst *opt_inst;
114 opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL);
117 opt_inst->option = option;
118 opt_inst->port = port;
119 opt_inst->changed = true;
120 opt_inst->removed = false;
121 list_add_tail(&opt_inst->list, &team->option_inst_list);
125 static void __team_option_inst_del(struct team_option_inst *opt_inst)
127 list_del(&opt_inst->list);
131 static void __team_option_inst_del_option(struct team *team,
132 struct team_option *option)
134 struct team_option_inst *opt_inst, *tmp;
136 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
137 if (opt_inst->option == option)
138 __team_option_inst_del(opt_inst);
142 static int __team_option_inst_add_option(struct team *team,
143 struct team_option *option)
145 struct team_port *port;
148 if (!option->per_port)
149 return __team_option_inst_add(team, option, 0);
151 list_for_each_entry(port, &team->port_list, list) {
152 err = __team_option_inst_add(team, option, port);
154 goto inst_del_option;
159 __team_option_inst_del_option(team, option);
163 static void __team_option_inst_mark_removed_option(struct team *team,
164 struct team_option *option)
166 struct team_option_inst *opt_inst;
168 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
169 if (opt_inst->option == option) {
170 opt_inst->changed = true;
171 opt_inst->removed = true;
176 static void __team_option_inst_del_port(struct team *team,
177 struct team_port *port)
179 struct team_option_inst *opt_inst, *tmp;
181 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
182 if (opt_inst->option->per_port &&
183 opt_inst->port == port)
184 __team_option_inst_del(opt_inst);
188 static int __team_option_inst_add_port(struct team *team,
189 struct team_port *port)
191 struct team_option *option;
194 list_for_each_entry(option, &team->option_list, list) {
195 if (!option->per_port)
197 err = __team_option_inst_add(team, option, port);
204 __team_option_inst_del_port(team, port);
208 static void __team_option_inst_mark_removed_port(struct team *team,
209 struct team_port *port)
211 struct team_option_inst *opt_inst;
213 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
214 if (opt_inst->port == port) {
215 opt_inst->changed = true;
216 opt_inst->removed = true;
221 static int __team_options_register(struct team *team,
222 const struct team_option *option,
226 struct team_option **dst_opts;
229 dst_opts = kzalloc(sizeof(struct team_option *) * option_count,
233 for (i = 0; i < option_count; i++, option++) {
234 if (__team_find_option(team, option->name)) {
238 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL);
245 for (i = 0; i < option_count; i++) {
246 err = __team_option_inst_add_option(team, dst_opts[i]);
249 list_add_tail(&dst_opts[i]->list, &team->option_list);
256 for (i--; i >= 0; i--)
257 __team_option_inst_del_option(team, dst_opts[i]);
259 i = option_count - 1;
261 for (i--; i >= 0; i--)
268 static void __team_options_mark_removed(struct team *team,
269 const struct team_option *option,
274 for (i = 0; i < option_count; i++, option++) {
275 struct team_option *del_opt;
277 del_opt = __team_find_option(team, option->name);
279 __team_option_inst_mark_removed_option(team, del_opt);
283 static void __team_options_unregister(struct team *team,
284 const struct team_option *option,
289 for (i = 0; i < option_count; i++, option++) {
290 struct team_option *del_opt;
292 del_opt = __team_find_option(team, option->name);
294 __team_option_inst_del_option(team, del_opt);
295 list_del(&del_opt->list);
301 static void __team_options_change_check(struct team *team);
303 int team_options_register(struct team *team,
304 const struct team_option *option,
309 err = __team_options_register(team, option, option_count);
312 __team_options_change_check(team);
315 EXPORT_SYMBOL(team_options_register);
317 void team_options_unregister(struct team *team,
318 const struct team_option *option,
321 __team_options_mark_removed(team, option, option_count);
322 __team_options_change_check(team);
323 __team_options_unregister(team, option, option_count);
325 EXPORT_SYMBOL(team_options_unregister);
327 static int team_option_port_add(struct team *team, struct team_port *port)
331 err = __team_option_inst_add_port(team, port);
334 __team_options_change_check(team);
338 static void team_option_port_del(struct team *team, struct team_port *port)
340 __team_option_inst_mark_removed_port(team, port);
341 __team_options_change_check(team);
342 __team_option_inst_del_port(team, port);
345 static int team_option_get(struct team *team,
346 struct team_option_inst *opt_inst,
347 struct team_gsetter_ctx *ctx)
349 return opt_inst->option->getter(team, ctx);
352 static int team_option_set(struct team *team,
353 struct team_option_inst *opt_inst,
354 struct team_gsetter_ctx *ctx)
358 err = opt_inst->option->setter(team, ctx);
362 opt_inst->changed = true;
363 __team_options_change_check(team);
371 static LIST_HEAD(mode_list);
372 static DEFINE_SPINLOCK(mode_list_lock);
374 static struct team_mode *__find_mode(const char *kind)
376 struct team_mode *mode;
378 list_for_each_entry(mode, &mode_list, list) {
379 if (strcmp(mode->kind, kind) == 0)
385 static bool is_good_mode_name(const char *name)
387 while (*name != '\0') {
388 if (!isalpha(*name) && !isdigit(*name) && *name != '_')
395 int team_mode_register(struct team_mode *mode)
399 if (!is_good_mode_name(mode->kind) ||
400 mode->priv_size > TEAM_MODE_PRIV_SIZE)
402 spin_lock(&mode_list_lock);
403 if (__find_mode(mode->kind)) {
407 list_add_tail(&mode->list, &mode_list);
409 spin_unlock(&mode_list_lock);
412 EXPORT_SYMBOL(team_mode_register);
414 int team_mode_unregister(struct team_mode *mode)
416 spin_lock(&mode_list_lock);
417 list_del_init(&mode->list);
418 spin_unlock(&mode_list_lock);
421 EXPORT_SYMBOL(team_mode_unregister);
423 static struct team_mode *team_mode_get(const char *kind)
425 struct team_mode *mode;
427 spin_lock(&mode_list_lock);
428 mode = __find_mode(kind);
430 spin_unlock(&mode_list_lock);
431 request_module("team-mode-%s", kind);
432 spin_lock(&mode_list_lock);
433 mode = __find_mode(kind);
436 if (!try_module_get(mode->owner))
439 spin_unlock(&mode_list_lock);
443 static void team_mode_put(const struct team_mode *mode)
445 module_put(mode->owner);
448 static bool team_dummy_transmit(struct team *team, struct sk_buff *skb)
450 dev_kfree_skb_any(skb);
454 rx_handler_result_t team_dummy_receive(struct team *team,
455 struct team_port *port,
458 return RX_HANDLER_ANOTHER;
461 static void team_adjust_ops(struct team *team)
464 * To avoid checks in rx/tx skb paths, ensure here that non-null and
465 * correct ops are always set.
468 if (list_empty(&team->port_list) ||
469 !team->mode || !team->mode->ops->transmit)
470 team->ops.transmit = team_dummy_transmit;
472 team->ops.transmit = team->mode->ops->transmit;
474 if (list_empty(&team->port_list) ||
475 !team->mode || !team->mode->ops->receive)
476 team->ops.receive = team_dummy_receive;
478 team->ops.receive = team->mode->ops->receive;
482 * We can benefit from the fact that it's ensured no port is present
483 * at the time of mode change. Therefore no packets are in fly so there's no
484 * need to set mode operations in any special way.
486 static int __team_change_mode(struct team *team,
487 const struct team_mode *new_mode)
489 /* Check if mode was previously set and do cleanup if so */
491 void (*exit_op)(struct team *team) = team->ops.exit;
493 /* Clear ops area so no callback is called any longer */
494 memset(&team->ops, 0, sizeof(struct team_mode_ops));
495 team_adjust_ops(team);
499 team_mode_put(team->mode);
501 /* zero private data area */
502 memset(&team->mode_priv, 0,
503 sizeof(struct team) - offsetof(struct team, mode_priv));
509 if (new_mode->ops->init) {
512 err = new_mode->ops->init(team);
517 team->mode = new_mode;
518 memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops));
519 team_adjust_ops(team);
524 static int team_change_mode(struct team *team, const char *kind)
526 struct team_mode *new_mode;
527 struct net_device *dev = team->dev;
530 if (!list_empty(&team->port_list)) {
531 netdev_err(dev, "No ports can be present during mode change\n");
535 if (team->mode && strcmp(team->mode->kind, kind) == 0) {
536 netdev_err(dev, "Unable to change to the same mode the team is in\n");
540 new_mode = team_mode_get(kind);
542 netdev_err(dev, "Mode \"%s\" not found\n", kind);
546 err = __team_change_mode(team, new_mode);
548 netdev_err(dev, "Failed to change to mode \"%s\"\n", kind);
549 team_mode_put(new_mode);
553 netdev_info(dev, "Mode changed to \"%s\"\n", kind);
558 /************************
559 * Rx path frame handler
560 ************************/
562 /* note: already called with rcu_read_lock */
563 static rx_handler_result_t team_handle_frame(struct sk_buff **pskb)
565 struct sk_buff *skb = *pskb;
566 struct team_port *port;
568 rx_handler_result_t res;
570 skb = skb_share_check(skb, GFP_ATOMIC);
572 return RX_HANDLER_CONSUMED;
576 port = team_port_get_rcu(skb->dev);
579 res = team->ops.receive(team, port, skb);
580 if (res == RX_HANDLER_ANOTHER) {
581 struct team_pcpu_stats *pcpu_stats;
583 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
584 u64_stats_update_begin(&pcpu_stats->syncp);
585 pcpu_stats->rx_packets++;
586 pcpu_stats->rx_bytes += skb->len;
587 if (skb->pkt_type == PACKET_MULTICAST)
588 pcpu_stats->rx_multicast++;
589 u64_stats_update_end(&pcpu_stats->syncp);
591 skb->dev = team->dev;
593 this_cpu_inc(team->pcpu_stats->rx_dropped);
604 static bool team_port_find(const struct team *team,
605 const struct team_port *port)
607 struct team_port *cur;
609 list_for_each_entry(cur, &team->port_list, list)
616 * Add/delete port to the team port list. Write guarded by rtnl_lock.
617 * Takes care of correct port->index setup (might be racy).
619 static void team_port_list_add_port(struct team *team,
620 struct team_port *port)
622 port->index = team->port_count++;
623 hlist_add_head_rcu(&port->hlist,
624 team_port_index_hash(team, port->index));
625 list_add_tail_rcu(&port->list, &team->port_list);
628 static void __reconstruct_port_hlist(struct team *team, int rm_index)
631 struct team_port *port;
633 for (i = rm_index + 1; i < team->port_count; i++) {
634 port = team_get_port_by_index(team, i);
635 hlist_del_rcu(&port->hlist);
637 hlist_add_head_rcu(&port->hlist,
638 team_port_index_hash(team, port->index));
642 static void team_port_list_del_port(struct team *team,
643 struct team_port *port)
645 int rm_index = port->index;
647 hlist_del_rcu(&port->hlist);
648 list_del_rcu(&port->list);
649 __reconstruct_port_hlist(team, rm_index);
653 #define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \
654 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
655 NETIF_F_HIGHDMA | NETIF_F_LRO)
657 static void __team_compute_features(struct team *team)
659 struct team_port *port;
660 u32 vlan_features = TEAM_VLAN_FEATURES;
661 unsigned short max_hard_header_len = ETH_HLEN;
663 list_for_each_entry(port, &team->port_list, list) {
664 vlan_features = netdev_increment_features(vlan_features,
665 port->dev->vlan_features,
668 if (port->dev->hard_header_len > max_hard_header_len)
669 max_hard_header_len = port->dev->hard_header_len;
672 team->dev->vlan_features = vlan_features;
673 team->dev->hard_header_len = max_hard_header_len;
675 netdev_change_features(team->dev);
678 static void team_compute_features(struct team *team)
680 mutex_lock(&team->lock);
681 __team_compute_features(team);
682 mutex_unlock(&team->lock);
685 static int team_port_enter(struct team *team, struct team_port *port)
690 port->dev->priv_flags |= IFF_TEAM_PORT;
691 if (team->ops.port_enter) {
692 err = team->ops.port_enter(team, port);
694 netdev_err(team->dev, "Device %s failed to enter team mode\n",
703 port->dev->priv_flags &= ~IFF_TEAM_PORT;
709 static void team_port_leave(struct team *team, struct team_port *port)
711 if (team->ops.port_leave)
712 team->ops.port_leave(team, port);
713 port->dev->priv_flags &= ~IFF_TEAM_PORT;
717 static void __team_port_change_check(struct team_port *port, bool linkup);
719 static int team_port_add(struct team *team, struct net_device *port_dev)
721 struct net_device *dev = team->dev;
722 struct team_port *port;
723 char *portname = port_dev->name;
726 if (port_dev->flags & IFF_LOOPBACK ||
727 port_dev->type != ARPHRD_ETHER) {
728 netdev_err(dev, "Device %s is of an unsupported type\n",
733 if (team_port_exists(port_dev)) {
734 netdev_err(dev, "Device %s is already a port "
735 "of a team device\n", portname);
739 if (port_dev->flags & IFF_UP) {
740 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
745 port = kzalloc(sizeof(struct team_port), GFP_KERNEL);
749 port->dev = port_dev;
752 port->orig.mtu = port_dev->mtu;
753 err = dev_set_mtu(port_dev, dev->mtu);
755 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
759 memcpy(port->orig.dev_addr, port_dev->dev_addr, ETH_ALEN);
761 err = team_port_enter(team, port);
763 netdev_err(dev, "Device %s failed to enter team mode\n",
768 err = dev_open(port_dev);
770 netdev_dbg(dev, "Device %s opening failed\n",
775 err = vlan_vids_add_by_dev(port_dev, dev);
777 netdev_err(dev, "Failed to add vlan ids to device %s\n",
782 err = netdev_set_master(port_dev, dev);
784 netdev_err(dev, "Device %s failed to set master\n", portname);
788 err = netdev_rx_handler_register(port_dev, team_handle_frame,
791 netdev_err(dev, "Device %s failed to register rx_handler\n",
793 goto err_handler_register;
796 err = team_option_port_add(team, port);
798 netdev_err(dev, "Device %s failed to add per-port options\n",
800 goto err_option_port_add;
803 team_port_list_add_port(team, port);
804 team_adjust_ops(team);
805 __team_compute_features(team);
806 __team_port_change_check(port, !!netif_carrier_ok(port_dev));
808 netdev_info(dev, "Port device %s added\n", portname);
813 netdev_rx_handler_unregister(port_dev);
815 err_handler_register:
816 netdev_set_master(port_dev, NULL);
819 vlan_vids_del_by_dev(port_dev, dev);
825 team_port_leave(team, port);
826 team_port_set_orig_mac(port);
829 dev_set_mtu(port_dev, port->orig.mtu);
837 static int team_port_del(struct team *team, struct net_device *port_dev)
839 struct net_device *dev = team->dev;
840 struct team_port *port;
841 char *portname = port_dev->name;
843 port = team_port_get_rtnl(port_dev);
844 if (!port || !team_port_find(team, port)) {
845 netdev_err(dev, "Device %s does not act as a port of this team\n",
850 port->removed = true;
851 __team_port_change_check(port, false);
852 team_port_list_del_port(team, port);
853 team_adjust_ops(team);
854 team_option_port_del(team, port);
855 netdev_rx_handler_unregister(port_dev);
856 netdev_set_master(port_dev, NULL);
857 vlan_vids_del_by_dev(port_dev, dev);
859 team_port_leave(team, port);
860 team_port_set_orig_mac(port);
861 dev_set_mtu(port_dev, port->orig.mtu);
864 netdev_info(dev, "Port device %s removed\n", portname);
865 __team_compute_features(team);
875 static const char team_no_mode_kind[] = "*NOMODE*";
877 static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
879 ctx->data.str_val = team->mode ? team->mode->kind : team_no_mode_kind;
883 static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
885 return team_change_mode(team, ctx->data.str_val);
888 static int team_user_linkup_option_get(struct team *team,
889 struct team_gsetter_ctx *ctx)
891 ctx->data.bool_val = ctx->port->user.linkup;
895 static int team_user_linkup_option_set(struct team *team,
896 struct team_gsetter_ctx *ctx)
898 ctx->port->user.linkup = ctx->data.bool_val;
899 team_refresh_port_linkup(ctx->port);
903 static int team_user_linkup_en_option_get(struct team *team,
904 struct team_gsetter_ctx *ctx)
906 struct team_port *port = ctx->port;
908 ctx->data.bool_val = port->user.linkup_enabled;
912 static int team_user_linkup_en_option_set(struct team *team,
913 struct team_gsetter_ctx *ctx)
915 struct team_port *port = ctx->port;
917 port->user.linkup_enabled = ctx->data.bool_val;
918 team_refresh_port_linkup(ctx->port);
922 static const struct team_option team_options[] = {
925 .type = TEAM_OPTION_TYPE_STRING,
926 .getter = team_mode_option_get,
927 .setter = team_mode_option_set,
930 .name = "user_linkup",
931 .type = TEAM_OPTION_TYPE_BOOL,
933 .getter = team_user_linkup_option_get,
934 .setter = team_user_linkup_option_set,
937 .name = "user_linkup_enabled",
938 .type = TEAM_OPTION_TYPE_BOOL,
940 .getter = team_user_linkup_en_option_get,
941 .setter = team_user_linkup_en_option_set,
945 static int team_init(struct net_device *dev)
947 struct team *team = netdev_priv(dev);
952 mutex_init(&team->lock);
954 team->pcpu_stats = alloc_percpu(struct team_pcpu_stats);
955 if (!team->pcpu_stats)
958 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
959 INIT_HLIST_HEAD(&team->port_hlist[i]);
960 INIT_LIST_HEAD(&team->port_list);
962 team_adjust_ops(team);
964 INIT_LIST_HEAD(&team->option_list);
965 INIT_LIST_HEAD(&team->option_inst_list);
966 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
968 goto err_options_register;
969 netif_carrier_off(dev);
973 err_options_register:
974 free_percpu(team->pcpu_stats);
979 static void team_uninit(struct net_device *dev)
981 struct team *team = netdev_priv(dev);
982 struct team_port *port;
983 struct team_port *tmp;
985 mutex_lock(&team->lock);
986 list_for_each_entry_safe(port, tmp, &team->port_list, list)
987 team_port_del(team, port->dev);
989 __team_change_mode(team, NULL); /* cleanup */
990 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
991 mutex_unlock(&team->lock);
994 static void team_destructor(struct net_device *dev)
996 struct team *team = netdev_priv(dev);
998 free_percpu(team->pcpu_stats);
1002 static int team_open(struct net_device *dev)
1004 netif_carrier_on(dev);
1008 static int team_close(struct net_device *dev)
1010 netif_carrier_off(dev);
1015 * note: already called with rcu_read_lock
1017 static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1019 struct team *team = netdev_priv(dev);
1020 bool tx_success = false;
1021 unsigned int len = skb->len;
1023 tx_success = team->ops.transmit(team, skb);
1025 struct team_pcpu_stats *pcpu_stats;
1027 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1028 u64_stats_update_begin(&pcpu_stats->syncp);
1029 pcpu_stats->tx_packets++;
1030 pcpu_stats->tx_bytes += len;
1031 u64_stats_update_end(&pcpu_stats->syncp);
1033 this_cpu_inc(team->pcpu_stats->tx_dropped);
1036 return NETDEV_TX_OK;
1039 static void team_change_rx_flags(struct net_device *dev, int change)
1041 struct team *team = netdev_priv(dev);
1042 struct team_port *port;
1046 list_for_each_entry_rcu(port, &team->port_list, list) {
1047 if (change & IFF_PROMISC) {
1048 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1049 dev_set_promiscuity(port->dev, inc);
1051 if (change & IFF_ALLMULTI) {
1052 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1053 dev_set_allmulti(port->dev, inc);
1059 static void team_set_rx_mode(struct net_device *dev)
1061 struct team *team = netdev_priv(dev);
1062 struct team_port *port;
1065 list_for_each_entry_rcu(port, &team->port_list, list) {
1066 dev_uc_sync(port->dev, dev);
1067 dev_mc_sync(port->dev, dev);
1072 static int team_set_mac_address(struct net_device *dev, void *p)
1074 struct team *team = netdev_priv(dev);
1075 struct team_port *port;
1076 struct sockaddr *addr = p;
1078 dev->addr_assign_type &= ~NET_ADDR_RANDOM;
1079 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
1081 list_for_each_entry_rcu(port, &team->port_list, list)
1082 if (team->ops.port_change_mac)
1083 team->ops.port_change_mac(team, port);
1088 static int team_change_mtu(struct net_device *dev, int new_mtu)
1090 struct team *team = netdev_priv(dev);
1091 struct team_port *port;
1095 * Alhough this is reader, it's guarded by team lock. It's not possible
1096 * to traverse list in reverse under rcu_read_lock
1098 mutex_lock(&team->lock);
1099 list_for_each_entry(port, &team->port_list, list) {
1100 err = dev_set_mtu(port->dev, new_mtu);
1102 netdev_err(dev, "Device %s failed to change mtu",
1107 mutex_unlock(&team->lock);
1114 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1115 dev_set_mtu(port->dev, dev->mtu);
1116 mutex_unlock(&team->lock);
1121 static struct rtnl_link_stats64 *
1122 team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1124 struct team *team = netdev_priv(dev);
1125 struct team_pcpu_stats *p;
1126 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1127 u32 rx_dropped = 0, tx_dropped = 0;
1131 for_each_possible_cpu(i) {
1132 p = per_cpu_ptr(team->pcpu_stats, i);
1134 start = u64_stats_fetch_begin_bh(&p->syncp);
1135 rx_packets = p->rx_packets;
1136 rx_bytes = p->rx_bytes;
1137 rx_multicast = p->rx_multicast;
1138 tx_packets = p->tx_packets;
1139 tx_bytes = p->tx_bytes;
1140 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
1142 stats->rx_packets += rx_packets;
1143 stats->rx_bytes += rx_bytes;
1144 stats->multicast += rx_multicast;
1145 stats->tx_packets += tx_packets;
1146 stats->tx_bytes += tx_bytes;
1148 * rx_dropped & tx_dropped are u32, updated
1149 * without syncp protection.
1151 rx_dropped += p->rx_dropped;
1152 tx_dropped += p->tx_dropped;
1154 stats->rx_dropped = rx_dropped;
1155 stats->tx_dropped = tx_dropped;
1159 static int team_vlan_rx_add_vid(struct net_device *dev, uint16_t vid)
1161 struct team *team = netdev_priv(dev);
1162 struct team_port *port;
1166 * Alhough this is reader, it's guarded by team lock. It's not possible
1167 * to traverse list in reverse under rcu_read_lock
1169 mutex_lock(&team->lock);
1170 list_for_each_entry(port, &team->port_list, list) {
1171 err = vlan_vid_add(port->dev, vid);
1175 mutex_unlock(&team->lock);
1180 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1181 vlan_vid_del(port->dev, vid);
1182 mutex_unlock(&team->lock);
1187 static int team_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid)
1189 struct team *team = netdev_priv(dev);
1190 struct team_port *port;
1193 list_for_each_entry_rcu(port, &team->port_list, list)
1194 vlan_vid_del(port->dev, vid);
1200 static int team_add_slave(struct net_device *dev, struct net_device *port_dev)
1202 struct team *team = netdev_priv(dev);
1205 mutex_lock(&team->lock);
1206 err = team_port_add(team, port_dev);
1207 mutex_unlock(&team->lock);
1211 static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1213 struct team *team = netdev_priv(dev);
1216 mutex_lock(&team->lock);
1217 err = team_port_del(team, port_dev);
1218 mutex_unlock(&team->lock);
1222 static netdev_features_t team_fix_features(struct net_device *dev,
1223 netdev_features_t features)
1225 struct team_port *port;
1226 struct team *team = netdev_priv(dev);
1227 netdev_features_t mask;
1230 features &= ~NETIF_F_ONE_FOR_ALL;
1231 features |= NETIF_F_ALL_FOR_ALL;
1234 list_for_each_entry_rcu(port, &team->port_list, list) {
1235 features = netdev_increment_features(features,
1236 port->dev->features,
1243 static const struct net_device_ops team_netdev_ops = {
1244 .ndo_init = team_init,
1245 .ndo_uninit = team_uninit,
1246 .ndo_open = team_open,
1247 .ndo_stop = team_close,
1248 .ndo_start_xmit = team_xmit,
1249 .ndo_change_rx_flags = team_change_rx_flags,
1250 .ndo_set_rx_mode = team_set_rx_mode,
1251 .ndo_set_mac_address = team_set_mac_address,
1252 .ndo_change_mtu = team_change_mtu,
1253 .ndo_get_stats64 = team_get_stats64,
1254 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
1255 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
1256 .ndo_add_slave = team_add_slave,
1257 .ndo_del_slave = team_del_slave,
1258 .ndo_fix_features = team_fix_features,
1262 /***********************
1263 * rt netlink interface
1264 ***********************/
1266 static void team_setup(struct net_device *dev)
1270 dev->netdev_ops = &team_netdev_ops;
1271 dev->destructor = team_destructor;
1272 dev->tx_queue_len = 0;
1273 dev->flags |= IFF_MULTICAST;
1274 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
1277 * Indicate we support unicast address filtering. That way core won't
1278 * bring us to promisc mode in case a unicast addr is added.
1279 * Let this up to underlay drivers.
1281 dev->priv_flags |= IFF_UNICAST_FLT;
1283 dev->features |= NETIF_F_LLTX;
1284 dev->features |= NETIF_F_GRO;
1285 dev->hw_features = NETIF_F_HW_VLAN_TX |
1286 NETIF_F_HW_VLAN_RX |
1287 NETIF_F_HW_VLAN_FILTER;
1289 dev->features |= dev->hw_features;
1292 static int team_newlink(struct net *src_net, struct net_device *dev,
1293 struct nlattr *tb[], struct nlattr *data[])
1297 if (tb[IFLA_ADDRESS] == NULL)
1298 eth_hw_addr_random(dev);
1300 err = register_netdevice(dev);
1307 static int team_validate(struct nlattr *tb[], struct nlattr *data[])
1309 if (tb[IFLA_ADDRESS]) {
1310 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
1312 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
1313 return -EADDRNOTAVAIL;
1318 static struct rtnl_link_ops team_link_ops __read_mostly = {
1320 .priv_size = sizeof(struct team),
1321 .setup = team_setup,
1322 .newlink = team_newlink,
1323 .validate = team_validate,
1327 /***********************************
1328 * Generic netlink custom interface
1329 ***********************************/
1331 static struct genl_family team_nl_family = {
1332 .id = GENL_ID_GENERATE,
1333 .name = TEAM_GENL_NAME,
1334 .version = TEAM_GENL_VERSION,
1335 .maxattr = TEAM_ATTR_MAX,
1339 static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
1340 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
1341 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
1342 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
1343 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
1346 static const struct nla_policy
1347 team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
1348 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
1349 [TEAM_ATTR_OPTION_NAME] = {
1351 .len = TEAM_STRING_MAX_LEN,
1353 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
1354 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
1355 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
1358 static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
1360 struct sk_buff *msg;
1364 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1368 hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq,
1369 &team_nl_family, 0, TEAM_CMD_NOOP);
1375 genlmsg_end(msg, hdr);
1377 return genlmsg_unicast(genl_info_net(info), msg, info->snd_pid);
1386 * Netlink cmd functions should be locked by following two functions.
1387 * Since dev gets held here, that ensures dev won't disappear in between.
1389 static struct team *team_nl_team_get(struct genl_info *info)
1391 struct net *net = genl_info_net(info);
1393 struct net_device *dev;
1396 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
1399 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
1400 dev = dev_get_by_index(net, ifindex);
1401 if (!dev || dev->netdev_ops != &team_netdev_ops) {
1407 team = netdev_priv(dev);
1408 mutex_lock(&team->lock);
1412 static void team_nl_team_put(struct team *team)
1414 mutex_unlock(&team->lock);
1418 static int team_nl_send_generic(struct genl_info *info, struct team *team,
1419 int (*fill_func)(struct sk_buff *skb,
1420 struct genl_info *info,
1421 int flags, struct team *team))
1423 struct sk_buff *skb;
1426 skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1430 err = fill_func(skb, info, NLM_F_ACK, team);
1434 err = genlmsg_unicast(genl_info_net(info), skb, info->snd_pid);
1442 static int team_nl_fill_options_get(struct sk_buff *skb,
1443 u32 pid, u32 seq, int flags,
1444 struct team *team, bool fillall)
1446 struct nlattr *option_list;
1448 struct team_option_inst *opt_inst;
1451 hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags,
1452 TEAM_CMD_OPTIONS_GET);
1454 return PTR_ERR(hdr);
1456 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
1457 goto nla_put_failure;
1458 option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION);
1462 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
1463 struct nlattr *option_item;
1464 struct team_option *option = opt_inst->option;
1465 struct team_gsetter_ctx ctx;
1467 /* Include only changed options if fill all mode is not on */
1468 if (!fillall && !opt_inst->changed)
1470 option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
1472 goto nla_put_failure;
1473 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
1474 goto nla_put_failure;
1475 if (opt_inst->changed) {
1476 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
1477 goto nla_put_failure;
1478 opt_inst->changed = false;
1480 if (opt_inst->removed &&
1481 nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
1482 goto nla_put_failure;
1483 if (opt_inst->port &&
1484 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
1485 opt_inst->port->dev->ifindex))
1486 goto nla_put_failure;
1487 ctx.port = opt_inst->port;
1488 switch (option->type) {
1489 case TEAM_OPTION_TYPE_U32:
1490 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
1491 goto nla_put_failure;
1492 err = team_option_get(team, opt_inst, &ctx);
1495 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA,
1497 goto nla_put_failure;
1499 case TEAM_OPTION_TYPE_STRING:
1500 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
1501 goto nla_put_failure;
1502 err = team_option_get(team, opt_inst, &ctx);
1505 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
1507 goto nla_put_failure;
1509 case TEAM_OPTION_TYPE_BINARY:
1510 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
1511 goto nla_put_failure;
1512 err = team_option_get(team, opt_inst, &ctx);
1515 if (nla_put(skb, TEAM_ATTR_OPTION_DATA,
1516 ctx.data.bin_val.len, ctx.data.bin_val.ptr))
1517 goto nla_put_failure;
1519 case TEAM_OPTION_TYPE_BOOL:
1520 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
1521 goto nla_put_failure;
1522 err = team_option_get(team, opt_inst, &ctx);
1525 if (ctx.data.bool_val &&
1526 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
1527 goto nla_put_failure;
1532 nla_nest_end(skb, option_item);
1535 nla_nest_end(skb, option_list);
1536 return genlmsg_end(skb, hdr);
1541 genlmsg_cancel(skb, hdr);
1545 static int team_nl_fill_options_get_all(struct sk_buff *skb,
1546 struct genl_info *info, int flags,
1549 return team_nl_fill_options_get(skb, info->snd_pid,
1550 info->snd_seq, NLM_F_ACK,
1554 static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
1559 team = team_nl_team_get(info);
1563 err = team_nl_send_generic(info, team, team_nl_fill_options_get_all);
1565 team_nl_team_put(team);
1570 static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
1575 struct nlattr *nl_option;
1577 team = team_nl_team_get(info);
1582 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
1587 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
1588 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
1589 struct nlattr *attr_port_ifindex;
1590 struct nlattr *attr_data;
1591 enum team_option_type opt_type;
1592 int opt_port_ifindex = 0; /* != 0 for per-port options */
1593 struct team_option_inst *opt_inst;
1595 bool opt_found = false;
1597 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
1601 err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX,
1602 nl_option, team_nl_option_policy);
1605 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
1606 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
1610 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
1612 opt_type = TEAM_OPTION_TYPE_U32;
1615 opt_type = TEAM_OPTION_TYPE_STRING;
1618 opt_type = TEAM_OPTION_TYPE_BINARY;
1621 opt_type = TEAM_OPTION_TYPE_BOOL;
1627 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
1628 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
1633 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
1634 attr_port_ifindex = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
1635 if (attr_port_ifindex)
1636 opt_port_ifindex = nla_get_u32(attr_port_ifindex);
1638 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
1639 struct team_option *option = opt_inst->option;
1640 struct team_gsetter_ctx ctx;
1643 tmp_ifindex = opt_inst->port ?
1644 opt_inst->port->dev->ifindex : 0;
1645 if (option->type != opt_type ||
1646 strcmp(option->name, opt_name) ||
1647 tmp_ifindex != opt_port_ifindex)
1650 ctx.port = opt_inst->port;
1652 case TEAM_OPTION_TYPE_U32:
1653 ctx.data.u32_val = nla_get_u32(attr_data);
1655 case TEAM_OPTION_TYPE_STRING:
1656 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
1660 ctx.data.str_val = nla_data(attr_data);
1662 case TEAM_OPTION_TYPE_BINARY:
1663 ctx.data.bin_val.len = nla_len(attr_data);
1664 ctx.data.bin_val.ptr = nla_data(attr_data);
1666 case TEAM_OPTION_TYPE_BOOL:
1667 ctx.data.bool_val = attr_data ? true : false;
1672 err = team_option_set(team, opt_inst, &ctx);
1683 team_nl_team_put(team);
1688 static int team_nl_fill_port_list_get(struct sk_buff *skb,
1689 u32 pid, u32 seq, int flags,
1693 struct nlattr *port_list;
1695 struct team_port *port;
1697 hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags,
1698 TEAM_CMD_PORT_LIST_GET);
1700 return PTR_ERR(hdr);
1702 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
1703 goto nla_put_failure;
1704 port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT);
1708 list_for_each_entry(port, &team->port_list, list) {
1709 struct nlattr *port_item;
1711 /* Include only changed ports if fill all mode is not on */
1712 if (!fillall && !port->changed)
1714 port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT);
1716 goto nla_put_failure;
1717 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
1718 goto nla_put_failure;
1719 if (port->changed) {
1720 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
1721 goto nla_put_failure;
1722 port->changed = false;
1724 if ((port->removed &&
1725 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
1726 (port->state.linkup &&
1727 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
1728 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
1729 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
1730 goto nla_put_failure;
1731 nla_nest_end(skb, port_item);
1734 nla_nest_end(skb, port_list);
1735 return genlmsg_end(skb, hdr);
1738 genlmsg_cancel(skb, hdr);
1742 static int team_nl_fill_port_list_get_all(struct sk_buff *skb,
1743 struct genl_info *info, int flags,
1746 return team_nl_fill_port_list_get(skb, info->snd_pid,
1747 info->snd_seq, NLM_F_ACK,
1751 static int team_nl_cmd_port_list_get(struct sk_buff *skb,
1752 struct genl_info *info)
1757 team = team_nl_team_get(info);
1761 err = team_nl_send_generic(info, team, team_nl_fill_port_list_get_all);
1763 team_nl_team_put(team);
1768 static struct genl_ops team_nl_ops[] = {
1770 .cmd = TEAM_CMD_NOOP,
1771 .doit = team_nl_cmd_noop,
1772 .policy = team_nl_policy,
1775 .cmd = TEAM_CMD_OPTIONS_SET,
1776 .doit = team_nl_cmd_options_set,
1777 .policy = team_nl_policy,
1778 .flags = GENL_ADMIN_PERM,
1781 .cmd = TEAM_CMD_OPTIONS_GET,
1782 .doit = team_nl_cmd_options_get,
1783 .policy = team_nl_policy,
1784 .flags = GENL_ADMIN_PERM,
1787 .cmd = TEAM_CMD_PORT_LIST_GET,
1788 .doit = team_nl_cmd_port_list_get,
1789 .policy = team_nl_policy,
1790 .flags = GENL_ADMIN_PERM,
1794 static struct genl_multicast_group team_change_event_mcgrp = {
1795 .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME,
1798 static int team_nl_send_event_options_get(struct team *team)
1800 struct sk_buff *skb;
1802 struct net *net = dev_net(team->dev);
1804 skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1808 err = team_nl_fill_options_get(skb, 0, 0, 0, team, false);
1812 err = genlmsg_multicast_netns(net, skb, 0, team_change_event_mcgrp.id,
1821 static int team_nl_send_event_port_list_get(struct team *team)
1823 struct sk_buff *skb;
1825 struct net *net = dev_net(team->dev);
1827 skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1831 err = team_nl_fill_port_list_get(skb, 0, 0, 0, team, false);
1835 err = genlmsg_multicast_netns(net, skb, 0, team_change_event_mcgrp.id,
1844 static int team_nl_init(void)
1848 err = genl_register_family_with_ops(&team_nl_family, team_nl_ops,
1849 ARRAY_SIZE(team_nl_ops));
1853 err = genl_register_mc_group(&team_nl_family, &team_change_event_mcgrp);
1855 goto err_change_event_grp_reg;
1859 err_change_event_grp_reg:
1860 genl_unregister_family(&team_nl_family);
1865 static void team_nl_fini(void)
1867 genl_unregister_family(&team_nl_family);
1875 static void __team_options_change_check(struct team *team)
1879 err = team_nl_send_event_options_get(team);
1881 netdev_warn(team->dev, "Failed to send options change via netlink\n");
1884 /* rtnl lock is held */
1885 static void __team_port_change_check(struct team_port *port, bool linkup)
1889 if (!port->removed && port->state.linkup == linkup)
1892 port->changed = true;
1893 port->state.linkup = linkup;
1894 team_refresh_port_linkup(port);
1896 struct ethtool_cmd ecmd;
1898 err = __ethtool_get_settings(port->dev, &ecmd);
1900 port->state.speed = ethtool_cmd_speed(&ecmd);
1901 port->state.duplex = ecmd.duplex;
1905 port->state.speed = 0;
1906 port->state.duplex = 0;
1909 err = team_nl_send_event_port_list_get(port->team);
1911 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink\n",
1916 static void team_port_change_check(struct team_port *port, bool linkup)
1918 struct team *team = port->team;
1920 mutex_lock(&team->lock);
1921 __team_port_change_check(port, linkup);
1922 mutex_unlock(&team->lock);
1925 /************************************
1926 * Net device notifier event handler
1927 ************************************/
1929 static int team_device_event(struct notifier_block *unused,
1930 unsigned long event, void *ptr)
1932 struct net_device *dev = (struct net_device *) ptr;
1933 struct team_port *port;
1935 port = team_port_get_rtnl(dev);
1941 if (netif_carrier_ok(dev))
1942 team_port_change_check(port, true);
1944 team_port_change_check(port, false);
1946 if (netif_running(port->dev))
1947 team_port_change_check(port,
1948 !!netif_carrier_ok(port->dev));
1950 case NETDEV_UNREGISTER:
1951 team_del_slave(port->team->dev, dev);
1953 case NETDEV_FEAT_CHANGE:
1954 team_compute_features(port->team);
1956 case NETDEV_CHANGEMTU:
1957 /* Forbid to change mtu of underlaying device */
1959 case NETDEV_PRE_TYPE_CHANGE:
1960 /* Forbid to change type of underlaying device */
1966 static struct notifier_block team_notifier_block __read_mostly = {
1967 .notifier_call = team_device_event,
1971 /***********************
1972 * Module init and exit
1973 ***********************/
1975 static int __init team_module_init(void)
1979 register_netdevice_notifier(&team_notifier_block);
1981 err = rtnl_link_register(&team_link_ops);
1985 err = team_nl_init();
1992 rtnl_link_unregister(&team_link_ops);
1995 unregister_netdevice_notifier(&team_notifier_block);
2000 static void __exit team_module_exit(void)
2003 rtnl_link_unregister(&team_link_ops);
2004 unregister_netdevice_notifier(&team_notifier_block);
2007 module_init(team_module_init);
2008 module_exit(team_module_exit);
2010 MODULE_LICENSE("GPL v2");
2011 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
2012 MODULE_DESCRIPTION("Ethernet team device driver");
2013 MODULE_ALIAS_RTNL_LINK(DRV_NAME);