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 int team_port_set_team_dev_addr(struct team_port *port)
78 return __set_port_dev_addr(port->dev, port->team->dev->dev_addr);
80 EXPORT_SYMBOL(team_port_set_team_dev_addr);
82 static void team_refresh_port_linkup(struct team_port *port)
84 port->linkup = port->user.linkup_enabled ? port->user.linkup :
93 struct team_option_inst { /* One for each option instance */
94 struct list_head list;
95 struct list_head tmp_list;
96 struct team_option *option;
97 struct team_option_inst_info info;
102 static struct team_option *__team_find_option(struct team *team,
103 const char *opt_name)
105 struct team_option *option;
107 list_for_each_entry(option, &team->option_list, list) {
108 if (strcmp(option->name, opt_name) == 0)
114 static void __team_option_inst_del(struct team_option_inst *opt_inst)
116 list_del(&opt_inst->list);
120 static void __team_option_inst_del_option(struct team *team,
121 struct team_option *option)
123 struct team_option_inst *opt_inst, *tmp;
125 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
126 if (opt_inst->option == option)
127 __team_option_inst_del(opt_inst);
131 static int __team_option_inst_add(struct team *team, struct team_option *option,
132 struct team_port *port)
134 struct team_option_inst *opt_inst;
135 unsigned int array_size;
139 array_size = option->array_size;
141 array_size = 1; /* No array but still need one instance */
143 for (i = 0; i < array_size; i++) {
144 opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL);
147 opt_inst->option = option;
148 opt_inst->info.port = port;
149 opt_inst->info.array_index = i;
150 opt_inst->changed = true;
151 opt_inst->removed = false;
152 list_add_tail(&opt_inst->list, &team->option_inst_list);
154 err = option->init(team, &opt_inst->info);
163 static int __team_option_inst_add_option(struct team *team,
164 struct team_option *option)
166 struct team_port *port;
169 if (!option->per_port) {
170 err = __team_option_inst_add(team, option, NULL);
172 goto inst_del_option;
175 list_for_each_entry(port, &team->port_list, list) {
176 err = __team_option_inst_add(team, option, port);
178 goto inst_del_option;
183 __team_option_inst_del_option(team, option);
187 static void __team_option_inst_mark_removed_option(struct team *team,
188 struct team_option *option)
190 struct team_option_inst *opt_inst;
192 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
193 if (opt_inst->option == option) {
194 opt_inst->changed = true;
195 opt_inst->removed = true;
200 static void __team_option_inst_del_port(struct team *team,
201 struct team_port *port)
203 struct team_option_inst *opt_inst, *tmp;
205 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
206 if (opt_inst->option->per_port &&
207 opt_inst->info.port == port)
208 __team_option_inst_del(opt_inst);
212 static int __team_option_inst_add_port(struct team *team,
213 struct team_port *port)
215 struct team_option *option;
218 list_for_each_entry(option, &team->option_list, list) {
219 if (!option->per_port)
221 err = __team_option_inst_add(team, option, port);
228 __team_option_inst_del_port(team, port);
232 static void __team_option_inst_mark_removed_port(struct team *team,
233 struct team_port *port)
235 struct team_option_inst *opt_inst;
237 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
238 if (opt_inst->info.port == port) {
239 opt_inst->changed = true;
240 opt_inst->removed = true;
245 static int __team_options_register(struct team *team,
246 const struct team_option *option,
250 struct team_option **dst_opts;
253 dst_opts = kzalloc(sizeof(struct team_option *) * option_count,
257 for (i = 0; i < option_count; i++, option++) {
258 if (__team_find_option(team, option->name)) {
262 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL);
269 for (i = 0; i < option_count; i++) {
270 err = __team_option_inst_add_option(team, dst_opts[i]);
273 list_add_tail(&dst_opts[i]->list, &team->option_list);
280 for (i--; i >= 0; i--)
281 __team_option_inst_del_option(team, dst_opts[i]);
283 i = option_count - 1;
285 for (i--; i >= 0; i--)
292 static void __team_options_mark_removed(struct team *team,
293 const struct team_option *option,
298 for (i = 0; i < option_count; i++, option++) {
299 struct team_option *del_opt;
301 del_opt = __team_find_option(team, option->name);
303 __team_option_inst_mark_removed_option(team, del_opt);
307 static void __team_options_unregister(struct team *team,
308 const struct team_option *option,
313 for (i = 0; i < option_count; i++, option++) {
314 struct team_option *del_opt;
316 del_opt = __team_find_option(team, option->name);
318 __team_option_inst_del_option(team, del_opt);
319 list_del(&del_opt->list);
325 static void __team_options_change_check(struct team *team);
327 int team_options_register(struct team *team,
328 const struct team_option *option,
333 err = __team_options_register(team, option, option_count);
336 __team_options_change_check(team);
339 EXPORT_SYMBOL(team_options_register);
341 void team_options_unregister(struct team *team,
342 const struct team_option *option,
345 __team_options_mark_removed(team, option, option_count);
346 __team_options_change_check(team);
347 __team_options_unregister(team, option, option_count);
349 EXPORT_SYMBOL(team_options_unregister);
351 static int team_option_get(struct team *team,
352 struct team_option_inst *opt_inst,
353 struct team_gsetter_ctx *ctx)
355 if (!opt_inst->option->getter)
357 return opt_inst->option->getter(team, ctx);
360 static int team_option_set(struct team *team,
361 struct team_option_inst *opt_inst,
362 struct team_gsetter_ctx *ctx)
364 if (!opt_inst->option->setter)
366 return opt_inst->option->setter(team, ctx);
369 void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info)
371 struct team_option_inst *opt_inst;
373 opt_inst = container_of(opt_inst_info, struct team_option_inst, info);
374 opt_inst->changed = true;
376 EXPORT_SYMBOL(team_option_inst_set_change);
378 void team_options_change_check(struct team *team)
380 __team_options_change_check(team);
382 EXPORT_SYMBOL(team_options_change_check);
389 static LIST_HEAD(mode_list);
390 static DEFINE_SPINLOCK(mode_list_lock);
392 struct team_mode_item {
393 struct list_head list;
394 const struct team_mode *mode;
397 static struct team_mode_item *__find_mode(const char *kind)
399 struct team_mode_item *mitem;
401 list_for_each_entry(mitem, &mode_list, list) {
402 if (strcmp(mitem->mode->kind, kind) == 0)
408 static bool is_good_mode_name(const char *name)
410 while (*name != '\0') {
411 if (!isalpha(*name) && !isdigit(*name) && *name != '_')
418 int team_mode_register(const struct team_mode *mode)
421 struct team_mode_item *mitem;
423 if (!is_good_mode_name(mode->kind) ||
424 mode->priv_size > TEAM_MODE_PRIV_SIZE)
427 mitem = kmalloc(sizeof(*mitem), GFP_KERNEL);
431 spin_lock(&mode_list_lock);
432 if (__find_mode(mode->kind)) {
438 list_add_tail(&mitem->list, &mode_list);
440 spin_unlock(&mode_list_lock);
443 EXPORT_SYMBOL(team_mode_register);
445 void team_mode_unregister(const struct team_mode *mode)
447 struct team_mode_item *mitem;
449 spin_lock(&mode_list_lock);
450 mitem = __find_mode(mode->kind);
452 list_del_init(&mitem->list);
455 spin_unlock(&mode_list_lock);
457 EXPORT_SYMBOL(team_mode_unregister);
459 static const struct team_mode *team_mode_get(const char *kind)
461 struct team_mode_item *mitem;
462 const struct team_mode *mode = NULL;
464 spin_lock(&mode_list_lock);
465 mitem = __find_mode(kind);
467 spin_unlock(&mode_list_lock);
468 request_module("team-mode-%s", kind);
469 spin_lock(&mode_list_lock);
470 mitem = __find_mode(kind);
474 if (!try_module_get(mode->owner))
478 spin_unlock(&mode_list_lock);
482 static void team_mode_put(const struct team_mode *mode)
484 module_put(mode->owner);
487 static bool team_dummy_transmit(struct team *team, struct sk_buff *skb)
489 dev_kfree_skb_any(skb);
493 rx_handler_result_t team_dummy_receive(struct team *team,
494 struct team_port *port,
497 return RX_HANDLER_ANOTHER;
500 static const struct team_mode __team_no_mode = {
504 static bool team_is_mode_set(struct team *team)
506 return team->mode != &__team_no_mode;
509 static void team_set_no_mode(struct team *team)
511 team->user_carrier_enabled = false;
512 team->mode = &__team_no_mode;
515 static void __team_adjust_ops(struct team *team, int en_port_count)
518 * To avoid checks in rx/tx skb paths, ensure here that non-null and
519 * correct ops are always set.
522 if (!en_port_count || !team_is_mode_set(team) ||
523 !team->mode->ops->transmit)
524 team->ops.transmit = team_dummy_transmit;
526 team->ops.transmit = team->mode->ops->transmit;
528 if (!en_port_count || !team_is_mode_set(team) ||
529 !team->mode->ops->receive)
530 team->ops.receive = team_dummy_receive;
532 team->ops.receive = team->mode->ops->receive;
535 static void team_adjust_ops(struct team *team)
537 __team_adjust_ops(team, team->en_port_count);
541 * We can benefit from the fact that it's ensured no port is present
542 * at the time of mode change. Therefore no packets are in fly so there's no
543 * need to set mode operations in any special way.
545 static int __team_change_mode(struct team *team,
546 const struct team_mode *new_mode)
548 /* Check if mode was previously set and do cleanup if so */
549 if (team_is_mode_set(team)) {
550 void (*exit_op)(struct team *team) = team->ops.exit;
552 /* Clear ops area so no callback is called any longer */
553 memset(&team->ops, 0, sizeof(struct team_mode_ops));
554 team_adjust_ops(team);
558 team_mode_put(team->mode);
559 team_set_no_mode(team);
560 /* zero private data area */
561 memset(&team->mode_priv, 0,
562 sizeof(struct team) - offsetof(struct team, mode_priv));
568 if (new_mode->ops->init) {
571 err = new_mode->ops->init(team);
576 team->mode = new_mode;
577 memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops));
578 team_adjust_ops(team);
583 static int team_change_mode(struct team *team, const char *kind)
585 const struct team_mode *new_mode;
586 struct net_device *dev = team->dev;
589 if (!list_empty(&team->port_list)) {
590 netdev_err(dev, "No ports can be present during mode change\n");
594 if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) {
595 netdev_err(dev, "Unable to change to the same mode the team is in\n");
599 new_mode = team_mode_get(kind);
601 netdev_err(dev, "Mode \"%s\" not found\n", kind);
605 err = __team_change_mode(team, new_mode);
607 netdev_err(dev, "Failed to change to mode \"%s\"\n", kind);
608 team_mode_put(new_mode);
612 netdev_info(dev, "Mode changed to \"%s\"\n", kind);
617 /************************
618 * Rx path frame handler
619 ************************/
621 /* note: already called with rcu_read_lock */
622 static rx_handler_result_t team_handle_frame(struct sk_buff **pskb)
624 struct sk_buff *skb = *pskb;
625 struct team_port *port;
627 rx_handler_result_t res;
629 skb = skb_share_check(skb, GFP_ATOMIC);
631 return RX_HANDLER_CONSUMED;
635 port = team_port_get_rcu(skb->dev);
637 if (!team_port_enabled(port)) {
638 /* allow exact match delivery for disabled ports */
639 res = RX_HANDLER_EXACT;
641 res = team->ops.receive(team, port, skb);
643 if (res == RX_HANDLER_ANOTHER) {
644 struct team_pcpu_stats *pcpu_stats;
646 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
647 u64_stats_update_begin(&pcpu_stats->syncp);
648 pcpu_stats->rx_packets++;
649 pcpu_stats->rx_bytes += skb->len;
650 if (skb->pkt_type == PACKET_MULTICAST)
651 pcpu_stats->rx_multicast++;
652 u64_stats_update_end(&pcpu_stats->syncp);
654 skb->dev = team->dev;
656 this_cpu_inc(team->pcpu_stats->rx_dropped);
663 /*************************************
664 * Multiqueue Tx port select override
665 *************************************/
667 static int team_queue_override_init(struct team *team)
669 struct list_head *listarr;
670 unsigned int queue_cnt = team->dev->num_tx_queues - 1;
675 listarr = kmalloc(sizeof(struct list_head) * queue_cnt, GFP_KERNEL);
678 team->qom_lists = listarr;
679 for (i = 0; i < queue_cnt; i++)
680 INIT_LIST_HEAD(listarr++);
684 static void team_queue_override_fini(struct team *team)
686 kfree(team->qom_lists);
689 static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id)
691 return &team->qom_lists[queue_id - 1];
695 * note: already called with rcu_read_lock
697 static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb)
699 struct list_head *qom_list;
700 struct team_port *port;
702 if (!team->queue_override_enabled || !skb->queue_mapping)
704 qom_list = __team_get_qom_list(team, skb->queue_mapping);
705 list_for_each_entry_rcu(port, qom_list, qom_list) {
706 if (!team_dev_queue_xmit(team, port, skb))
712 static void __team_queue_override_port_del(struct team *team,
713 struct team_port *port)
715 list_del_rcu(&port->qom_list);
717 INIT_LIST_HEAD(&port->qom_list);
720 static bool team_queue_override_port_has_gt_prio_than(struct team_port *port,
721 struct team_port *cur)
723 if (port->priority < cur->priority)
725 if (port->priority > cur->priority)
727 if (port->index < cur->index)
732 static void __team_queue_override_port_add(struct team *team,
733 struct team_port *port)
735 struct team_port *cur;
736 struct list_head *qom_list;
737 struct list_head *node;
739 if (!port->queue_id || !team_port_enabled(port))
742 qom_list = __team_get_qom_list(team, port->queue_id);
744 list_for_each_entry(cur, qom_list, qom_list) {
745 if (team_queue_override_port_has_gt_prio_than(port, cur))
747 node = &cur->qom_list;
749 list_add_tail_rcu(&port->qom_list, node);
752 static void __team_queue_override_enabled_check(struct team *team)
754 struct team_port *port;
755 bool enabled = false;
757 list_for_each_entry(port, &team->port_list, list) {
758 if (!list_empty(&port->qom_list)) {
763 if (enabled == team->queue_override_enabled)
765 netdev_dbg(team->dev, "%s queue override\n",
766 enabled ? "Enabling" : "Disabling");
767 team->queue_override_enabled = enabled;
770 static void team_queue_override_port_refresh(struct team *team,
771 struct team_port *port)
773 __team_queue_override_port_del(team, port);
774 __team_queue_override_port_add(team, port);
775 __team_queue_override_enabled_check(team);
783 static bool team_port_find(const struct team *team,
784 const struct team_port *port)
786 struct team_port *cur;
788 list_for_each_entry(cur, &team->port_list, list)
795 * Enable/disable port by adding to enabled port hashlist and setting
796 * port->index (Might be racy so reader could see incorrect ifindex when
797 * processing a flying packet, but that is not a problem). Write guarded
800 static void team_port_enable(struct team *team,
801 struct team_port *port)
803 if (team_port_enabled(port))
805 port->index = team->en_port_count++;
806 hlist_add_head_rcu(&port->hlist,
807 team_port_index_hash(team, port->index));
808 team_adjust_ops(team);
809 team_queue_override_port_refresh(team, port);
810 if (team->ops.port_enabled)
811 team->ops.port_enabled(team, port);
814 static void __reconstruct_port_hlist(struct team *team, int rm_index)
817 struct team_port *port;
819 for (i = rm_index + 1; i < team->en_port_count; i++) {
820 port = team_get_port_by_index(team, i);
821 hlist_del_rcu(&port->hlist);
823 hlist_add_head_rcu(&port->hlist,
824 team_port_index_hash(team, port->index));
828 static void team_port_disable(struct team *team,
829 struct team_port *port)
831 if (!team_port_enabled(port))
833 if (team->ops.port_disabled)
834 team->ops.port_disabled(team, port);
835 hlist_del_rcu(&port->hlist);
836 __reconstruct_port_hlist(team, port->index);
838 team_queue_override_port_refresh(team, port);
839 __team_adjust_ops(team, team->en_port_count - 1);
841 * Wait until readers see adjusted ops. This ensures that
842 * readers never see team->en_port_count == 0
845 team->en_port_count--;
848 #define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \
849 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
850 NETIF_F_HIGHDMA | NETIF_F_LRO)
852 static void __team_compute_features(struct team *team)
854 struct team_port *port;
855 u32 vlan_features = TEAM_VLAN_FEATURES;
856 unsigned short max_hard_header_len = ETH_HLEN;
857 unsigned int flags, dst_release_flag = IFF_XMIT_DST_RELEASE;
859 list_for_each_entry(port, &team->port_list, list) {
860 vlan_features = netdev_increment_features(vlan_features,
861 port->dev->vlan_features,
864 dst_release_flag &= port->dev->priv_flags;
865 if (port->dev->hard_header_len > max_hard_header_len)
866 max_hard_header_len = port->dev->hard_header_len;
869 team->dev->vlan_features = vlan_features;
870 team->dev->hard_header_len = max_hard_header_len;
872 flags = team->dev->priv_flags & ~IFF_XMIT_DST_RELEASE;
873 team->dev->priv_flags = flags | dst_release_flag;
875 netdev_change_features(team->dev);
878 static void team_compute_features(struct team *team)
880 mutex_lock(&team->lock);
881 __team_compute_features(team);
882 mutex_unlock(&team->lock);
885 static int team_port_enter(struct team *team, struct team_port *port)
890 port->dev->priv_flags |= IFF_TEAM_PORT;
891 if (team->ops.port_enter) {
892 err = team->ops.port_enter(team, port);
894 netdev_err(team->dev, "Device %s failed to enter team mode\n",
903 port->dev->priv_flags &= ~IFF_TEAM_PORT;
909 static void team_port_leave(struct team *team, struct team_port *port)
911 if (team->ops.port_leave)
912 team->ops.port_leave(team, port);
913 port->dev->priv_flags &= ~IFF_TEAM_PORT;
917 #ifdef CONFIG_NET_POLL_CONTROLLER
918 static int team_port_enable_netpoll(struct team *team, struct team_port *port,
924 np = kzalloc(sizeof(*np), gfp);
928 err = __netpoll_setup(np, port->dev, gfp);
937 static void team_port_disable_netpoll(struct team_port *port)
939 struct netpoll *np = port->np;
945 /* Wait for transmitting packets to finish before freeing. */
946 synchronize_rcu_bh();
947 __netpoll_cleanup(np);
951 static struct netpoll_info *team_netpoll_info(struct team *team)
953 return team->dev->npinfo;
957 static int team_port_enable_netpoll(struct team *team, struct team_port *port,
962 static void team_port_disable_netpoll(struct team_port *port)
965 static struct netpoll_info *team_netpoll_info(struct team *team)
971 static void __team_port_change_port_added(struct team_port *port, bool linkup);
972 static int team_dev_type_check_change(struct net_device *dev,
973 struct net_device *port_dev);
975 static int team_port_add(struct team *team, struct net_device *port_dev)
977 struct net_device *dev = team->dev;
978 struct team_port *port;
979 char *portname = port_dev->name;
982 if (port_dev->flags & IFF_LOOPBACK) {
983 netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n",
988 if (team_port_exists(port_dev)) {
989 netdev_err(dev, "Device %s is already a port "
990 "of a team device\n", portname);
994 if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
995 vlan_uses_dev(dev)) {
996 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
1001 err = team_dev_type_check_change(dev, port_dev);
1005 if (port_dev->flags & IFF_UP) {
1006 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
1011 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size,
1016 port->dev = port_dev;
1018 INIT_LIST_HEAD(&port->qom_list);
1020 port->orig.mtu = port_dev->mtu;
1021 err = dev_set_mtu(port_dev, dev->mtu);
1023 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
1027 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len);
1029 err = team_port_enter(team, port);
1031 netdev_err(dev, "Device %s failed to enter team mode\n",
1033 goto err_port_enter;
1036 err = dev_open(port_dev);
1038 netdev_dbg(dev, "Device %s opening failed\n",
1043 err = vlan_vids_add_by_dev(port_dev, dev);
1045 netdev_err(dev, "Failed to add vlan ids to device %s\n",
1050 if (team_netpoll_info(team)) {
1051 err = team_port_enable_netpoll(team, port, GFP_KERNEL);
1053 netdev_err(dev, "Failed to enable netpoll on device %s\n",
1055 goto err_enable_netpoll;
1059 err = netdev_master_upper_dev_link(port_dev, dev);
1061 netdev_err(dev, "Device %s failed to set upper link\n",
1063 goto err_set_upper_link;
1066 err = netdev_rx_handler_register(port_dev, team_handle_frame,
1069 netdev_err(dev, "Device %s failed to register rx_handler\n",
1071 goto err_handler_register;
1074 err = __team_option_inst_add_port(team, port);
1076 netdev_err(dev, "Device %s failed to add per-port options\n",
1078 goto err_option_port_add;
1082 team_port_enable(team, port);
1083 list_add_tail_rcu(&port->list, &team->port_list);
1084 __team_compute_features(team);
1085 __team_port_change_port_added(port, !!netif_carrier_ok(port_dev));
1086 __team_options_change_check(team);
1088 netdev_info(dev, "Port device %s added\n", portname);
1092 err_option_port_add:
1093 netdev_rx_handler_unregister(port_dev);
1095 err_handler_register:
1096 netdev_upper_dev_unlink(port_dev, dev);
1099 team_port_disable_netpoll(port);
1102 vlan_vids_del_by_dev(port_dev, dev);
1105 dev_close(port_dev);
1108 team_port_leave(team, port);
1109 team_port_set_orig_dev_addr(port);
1112 dev_set_mtu(port_dev, port->orig.mtu);
1120 static void __team_port_change_port_removed(struct team_port *port);
1122 static int team_port_del(struct team *team, struct net_device *port_dev)
1124 struct net_device *dev = team->dev;
1125 struct team_port *port;
1126 char *portname = port_dev->name;
1128 port = team_port_get_rtnl(port_dev);
1129 if (!port || !team_port_find(team, port)) {
1130 netdev_err(dev, "Device %s does not act as a port of this team\n",
1135 team_port_disable(team, port);
1136 list_del_rcu(&port->list);
1137 netdev_rx_handler_unregister(port_dev);
1138 netdev_upper_dev_unlink(port_dev, dev);
1139 team_port_disable_netpoll(port);
1140 vlan_vids_del_by_dev(port_dev, dev);
1141 dev_close(port_dev);
1142 team_port_leave(team, port);
1144 __team_option_inst_mark_removed_port(team, port);
1145 __team_options_change_check(team);
1146 __team_option_inst_del_port(team, port);
1147 __team_port_change_port_removed(port);
1149 team_port_set_orig_dev_addr(port);
1150 dev_set_mtu(port_dev, port->orig.mtu);
1153 netdev_info(dev, "Port device %s removed\n", portname);
1154 __team_compute_features(team);
1164 static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
1166 ctx->data.str_val = team->mode->kind;
1170 static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
1172 return team_change_mode(team, ctx->data.str_val);
1175 static int team_port_en_option_get(struct team *team,
1176 struct team_gsetter_ctx *ctx)
1178 struct team_port *port = ctx->info->port;
1180 ctx->data.bool_val = team_port_enabled(port);
1184 static int team_port_en_option_set(struct team *team,
1185 struct team_gsetter_ctx *ctx)
1187 struct team_port *port = ctx->info->port;
1189 if (ctx->data.bool_val)
1190 team_port_enable(team, port);
1192 team_port_disable(team, port);
1196 static int team_user_linkup_option_get(struct team *team,
1197 struct team_gsetter_ctx *ctx)
1199 struct team_port *port = ctx->info->port;
1201 ctx->data.bool_val = port->user.linkup;
1205 static int team_user_linkup_option_set(struct team *team,
1206 struct team_gsetter_ctx *ctx)
1208 struct team_port *port = ctx->info->port;
1210 port->user.linkup = ctx->data.bool_val;
1211 team_refresh_port_linkup(port);
1215 static int team_user_linkup_en_option_get(struct team *team,
1216 struct team_gsetter_ctx *ctx)
1218 struct team_port *port = ctx->info->port;
1220 ctx->data.bool_val = port->user.linkup_enabled;
1224 static int team_user_linkup_en_option_set(struct team *team,
1225 struct team_gsetter_ctx *ctx)
1227 struct team_port *port = ctx->info->port;
1229 port->user.linkup_enabled = ctx->data.bool_val;
1230 team_refresh_port_linkup(port);
1234 static int team_priority_option_get(struct team *team,
1235 struct team_gsetter_ctx *ctx)
1237 struct team_port *port = ctx->info->port;
1239 ctx->data.s32_val = port->priority;
1243 static int team_priority_option_set(struct team *team,
1244 struct team_gsetter_ctx *ctx)
1246 struct team_port *port = ctx->info->port;
1248 port->priority = ctx->data.s32_val;
1249 team_queue_override_port_refresh(team, port);
1253 static int team_queue_id_option_get(struct team *team,
1254 struct team_gsetter_ctx *ctx)
1256 struct team_port *port = ctx->info->port;
1258 ctx->data.u32_val = port->queue_id;
1262 static int team_queue_id_option_set(struct team *team,
1263 struct team_gsetter_ctx *ctx)
1265 struct team_port *port = ctx->info->port;
1267 if (port->queue_id == ctx->data.u32_val)
1269 if (ctx->data.u32_val >= team->dev->real_num_tx_queues)
1271 port->queue_id = ctx->data.u32_val;
1272 team_queue_override_port_refresh(team, port);
1277 static const struct team_option team_options[] = {
1280 .type = TEAM_OPTION_TYPE_STRING,
1281 .getter = team_mode_option_get,
1282 .setter = team_mode_option_set,
1286 .type = TEAM_OPTION_TYPE_BOOL,
1288 .getter = team_port_en_option_get,
1289 .setter = team_port_en_option_set,
1292 .name = "user_linkup",
1293 .type = TEAM_OPTION_TYPE_BOOL,
1295 .getter = team_user_linkup_option_get,
1296 .setter = team_user_linkup_option_set,
1299 .name = "user_linkup_enabled",
1300 .type = TEAM_OPTION_TYPE_BOOL,
1302 .getter = team_user_linkup_en_option_get,
1303 .setter = team_user_linkup_en_option_set,
1307 .type = TEAM_OPTION_TYPE_S32,
1309 .getter = team_priority_option_get,
1310 .setter = team_priority_option_set,
1314 .type = TEAM_OPTION_TYPE_U32,
1316 .getter = team_queue_id_option_get,
1317 .setter = team_queue_id_option_set,
1321 static struct lock_class_key team_netdev_xmit_lock_key;
1322 static struct lock_class_key team_netdev_addr_lock_key;
1323 static struct lock_class_key team_tx_busylock_key;
1325 static void team_set_lockdep_class_one(struct net_device *dev,
1326 struct netdev_queue *txq,
1329 lockdep_set_class(&txq->_xmit_lock, &team_netdev_xmit_lock_key);
1332 static void team_set_lockdep_class(struct net_device *dev)
1334 lockdep_set_class(&dev->addr_list_lock, &team_netdev_addr_lock_key);
1335 netdev_for_each_tx_queue(dev, team_set_lockdep_class_one, NULL);
1336 dev->qdisc_tx_busylock = &team_tx_busylock_key;
1339 static int team_init(struct net_device *dev)
1341 struct team *team = netdev_priv(dev);
1346 mutex_init(&team->lock);
1347 team_set_no_mode(team);
1349 team->pcpu_stats = alloc_percpu(struct team_pcpu_stats);
1350 if (!team->pcpu_stats)
1353 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
1354 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
1355 INIT_LIST_HEAD(&team->port_list);
1356 err = team_queue_override_init(team);
1358 goto err_team_queue_override_init;
1360 team_adjust_ops(team);
1362 INIT_LIST_HEAD(&team->option_list);
1363 INIT_LIST_HEAD(&team->option_inst_list);
1364 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1366 goto err_options_register;
1367 netif_carrier_off(dev);
1369 team_set_lockdep_class(dev);
1373 err_options_register:
1374 team_queue_override_fini(team);
1375 err_team_queue_override_init:
1376 free_percpu(team->pcpu_stats);
1381 static void team_uninit(struct net_device *dev)
1383 struct team *team = netdev_priv(dev);
1384 struct team_port *port;
1385 struct team_port *tmp;
1387 mutex_lock(&team->lock);
1388 list_for_each_entry_safe(port, tmp, &team->port_list, list)
1389 team_port_del(team, port->dev);
1391 __team_change_mode(team, NULL); /* cleanup */
1392 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
1393 team_queue_override_fini(team);
1394 mutex_unlock(&team->lock);
1397 static void team_destructor(struct net_device *dev)
1399 struct team *team = netdev_priv(dev);
1401 free_percpu(team->pcpu_stats);
1405 static int team_open(struct net_device *dev)
1410 static int team_close(struct net_device *dev)
1416 * note: already called with rcu_read_lock
1418 static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1420 struct team *team = netdev_priv(dev);
1422 unsigned int len = skb->len;
1424 tx_success = team_queue_override_transmit(team, skb);
1426 tx_success = team->ops.transmit(team, skb);
1428 struct team_pcpu_stats *pcpu_stats;
1430 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1431 u64_stats_update_begin(&pcpu_stats->syncp);
1432 pcpu_stats->tx_packets++;
1433 pcpu_stats->tx_bytes += len;
1434 u64_stats_update_end(&pcpu_stats->syncp);
1436 this_cpu_inc(team->pcpu_stats->tx_dropped);
1439 return NETDEV_TX_OK;
1442 static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb)
1445 * This helper function exists to help dev_pick_tx get the correct
1446 * destination queue. Using a helper function skips a call to
1447 * skb_tx_hash and will put the skbs in the queue we expect on their
1448 * way down to the team driver.
1450 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1453 * Save the original txq to restore before passing to the driver
1455 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1457 if (unlikely(txq >= dev->real_num_tx_queues)) {
1459 txq -= dev->real_num_tx_queues;
1460 } while (txq >= dev->real_num_tx_queues);
1465 static void team_change_rx_flags(struct net_device *dev, int change)
1467 struct team *team = netdev_priv(dev);
1468 struct team_port *port;
1472 list_for_each_entry_rcu(port, &team->port_list, list) {
1473 if (change & IFF_PROMISC) {
1474 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1475 dev_set_promiscuity(port->dev, inc);
1477 if (change & IFF_ALLMULTI) {
1478 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1479 dev_set_allmulti(port->dev, inc);
1485 static void team_set_rx_mode(struct net_device *dev)
1487 struct team *team = netdev_priv(dev);
1488 struct team_port *port;
1491 list_for_each_entry_rcu(port, &team->port_list, list) {
1492 dev_uc_sync(port->dev, dev);
1493 dev_mc_sync(port->dev, dev);
1498 static int team_set_mac_address(struct net_device *dev, void *p)
1500 struct sockaddr *addr = p;
1501 struct team *team = netdev_priv(dev);
1502 struct team_port *port;
1504 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data))
1505 return -EADDRNOTAVAIL;
1506 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1508 list_for_each_entry_rcu(port, &team->port_list, list)
1509 if (team->ops.port_change_dev_addr)
1510 team->ops.port_change_dev_addr(team, port);
1515 static int team_change_mtu(struct net_device *dev, int new_mtu)
1517 struct team *team = netdev_priv(dev);
1518 struct team_port *port;
1522 * Alhough this is reader, it's guarded by team lock. It's not possible
1523 * to traverse list in reverse under rcu_read_lock
1525 mutex_lock(&team->lock);
1526 list_for_each_entry(port, &team->port_list, list) {
1527 err = dev_set_mtu(port->dev, new_mtu);
1529 netdev_err(dev, "Device %s failed to change mtu",
1534 mutex_unlock(&team->lock);
1541 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1542 dev_set_mtu(port->dev, dev->mtu);
1543 mutex_unlock(&team->lock);
1548 static struct rtnl_link_stats64 *
1549 team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1551 struct team *team = netdev_priv(dev);
1552 struct team_pcpu_stats *p;
1553 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1554 u32 rx_dropped = 0, tx_dropped = 0;
1558 for_each_possible_cpu(i) {
1559 p = per_cpu_ptr(team->pcpu_stats, i);
1561 start = u64_stats_fetch_begin_bh(&p->syncp);
1562 rx_packets = p->rx_packets;
1563 rx_bytes = p->rx_bytes;
1564 rx_multicast = p->rx_multicast;
1565 tx_packets = p->tx_packets;
1566 tx_bytes = p->tx_bytes;
1567 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
1569 stats->rx_packets += rx_packets;
1570 stats->rx_bytes += rx_bytes;
1571 stats->multicast += rx_multicast;
1572 stats->tx_packets += tx_packets;
1573 stats->tx_bytes += tx_bytes;
1575 * rx_dropped & tx_dropped are u32, updated
1576 * without syncp protection.
1578 rx_dropped += p->rx_dropped;
1579 tx_dropped += p->tx_dropped;
1581 stats->rx_dropped = rx_dropped;
1582 stats->tx_dropped = tx_dropped;
1586 static int team_vlan_rx_add_vid(struct net_device *dev, uint16_t vid)
1588 struct team *team = netdev_priv(dev);
1589 struct team_port *port;
1593 * Alhough this is reader, it's guarded by team lock. It's not possible
1594 * to traverse list in reverse under rcu_read_lock
1596 mutex_lock(&team->lock);
1597 list_for_each_entry(port, &team->port_list, list) {
1598 err = vlan_vid_add(port->dev, vid);
1602 mutex_unlock(&team->lock);
1607 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1608 vlan_vid_del(port->dev, vid);
1609 mutex_unlock(&team->lock);
1614 static int team_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid)
1616 struct team *team = netdev_priv(dev);
1617 struct team_port *port;
1620 list_for_each_entry_rcu(port, &team->port_list, list)
1621 vlan_vid_del(port->dev, vid);
1627 #ifdef CONFIG_NET_POLL_CONTROLLER
1628 static void team_poll_controller(struct net_device *dev)
1632 static void __team_netpoll_cleanup(struct team *team)
1634 struct team_port *port;
1636 list_for_each_entry(port, &team->port_list, list)
1637 team_port_disable_netpoll(port);
1640 static void team_netpoll_cleanup(struct net_device *dev)
1642 struct team *team = netdev_priv(dev);
1644 mutex_lock(&team->lock);
1645 __team_netpoll_cleanup(team);
1646 mutex_unlock(&team->lock);
1649 static int team_netpoll_setup(struct net_device *dev,
1650 struct netpoll_info *npifo, gfp_t gfp)
1652 struct team *team = netdev_priv(dev);
1653 struct team_port *port;
1656 mutex_lock(&team->lock);
1657 list_for_each_entry(port, &team->port_list, list) {
1658 err = team_port_enable_netpoll(team, port, gfp);
1660 __team_netpoll_cleanup(team);
1664 mutex_unlock(&team->lock);
1669 static int team_add_slave(struct net_device *dev, struct net_device *port_dev)
1671 struct team *team = netdev_priv(dev);
1674 mutex_lock(&team->lock);
1675 err = team_port_add(team, port_dev);
1676 mutex_unlock(&team->lock);
1680 static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1682 struct team *team = netdev_priv(dev);
1685 mutex_lock(&team->lock);
1686 err = team_port_del(team, port_dev);
1687 mutex_unlock(&team->lock);
1691 static netdev_features_t team_fix_features(struct net_device *dev,
1692 netdev_features_t features)
1694 struct team_port *port;
1695 struct team *team = netdev_priv(dev);
1696 netdev_features_t mask;
1699 features &= ~NETIF_F_ONE_FOR_ALL;
1700 features |= NETIF_F_ALL_FOR_ALL;
1703 list_for_each_entry_rcu(port, &team->port_list, list) {
1704 features = netdev_increment_features(features,
1705 port->dev->features,
1712 static int team_change_carrier(struct net_device *dev, bool new_carrier)
1714 struct team *team = netdev_priv(dev);
1716 team->user_carrier_enabled = true;
1719 netif_carrier_on(dev);
1721 netif_carrier_off(dev);
1725 static const struct net_device_ops team_netdev_ops = {
1726 .ndo_init = team_init,
1727 .ndo_uninit = team_uninit,
1728 .ndo_open = team_open,
1729 .ndo_stop = team_close,
1730 .ndo_start_xmit = team_xmit,
1731 .ndo_select_queue = team_select_queue,
1732 .ndo_change_rx_flags = team_change_rx_flags,
1733 .ndo_set_rx_mode = team_set_rx_mode,
1734 .ndo_set_mac_address = team_set_mac_address,
1735 .ndo_change_mtu = team_change_mtu,
1736 .ndo_get_stats64 = team_get_stats64,
1737 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
1738 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
1739 #ifdef CONFIG_NET_POLL_CONTROLLER
1740 .ndo_poll_controller = team_poll_controller,
1741 .ndo_netpoll_setup = team_netpoll_setup,
1742 .ndo_netpoll_cleanup = team_netpoll_cleanup,
1744 .ndo_add_slave = team_add_slave,
1745 .ndo_del_slave = team_del_slave,
1746 .ndo_fix_features = team_fix_features,
1747 .ndo_change_carrier = team_change_carrier,
1750 /***********************
1752 ***********************/
1754 static void team_ethtool_get_drvinfo(struct net_device *dev,
1755 struct ethtool_drvinfo *drvinfo)
1757 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
1758 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
1761 static const struct ethtool_ops team_ethtool_ops = {
1762 .get_drvinfo = team_ethtool_get_drvinfo,
1763 .get_link = ethtool_op_get_link,
1766 /***********************
1767 * rt netlink interface
1768 ***********************/
1770 static void team_setup_by_port(struct net_device *dev,
1771 struct net_device *port_dev)
1773 dev->header_ops = port_dev->header_ops;
1774 dev->type = port_dev->type;
1775 dev->hard_header_len = port_dev->hard_header_len;
1776 dev->addr_len = port_dev->addr_len;
1777 dev->mtu = port_dev->mtu;
1778 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
1779 memcpy(dev->dev_addr, port_dev->dev_addr, port_dev->addr_len);
1782 static int team_dev_type_check_change(struct net_device *dev,
1783 struct net_device *port_dev)
1785 struct team *team = netdev_priv(dev);
1786 char *portname = port_dev->name;
1789 if (dev->type == port_dev->type)
1791 if (!list_empty(&team->port_list)) {
1792 netdev_err(dev, "Device %s is of different type\n", portname);
1795 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev);
1796 err = notifier_to_errno(err);
1798 netdev_err(dev, "Refused to change device type\n");
1803 team_setup_by_port(dev, port_dev);
1804 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev);
1808 static void team_setup(struct net_device *dev)
1812 dev->netdev_ops = &team_netdev_ops;
1813 dev->ethtool_ops = &team_ethtool_ops;
1814 dev->destructor = team_destructor;
1815 dev->tx_queue_len = 0;
1816 dev->flags |= IFF_MULTICAST;
1817 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
1820 * Indicate we support unicast address filtering. That way core won't
1821 * bring us to promisc mode in case a unicast addr is added.
1822 * Let this up to underlay drivers.
1824 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
1826 dev->features |= NETIF_F_LLTX;
1827 dev->features |= NETIF_F_GRO;
1828 dev->hw_features = TEAM_VLAN_FEATURES |
1829 NETIF_F_HW_VLAN_TX |
1830 NETIF_F_HW_VLAN_RX |
1831 NETIF_F_HW_VLAN_FILTER;
1833 dev->hw_features &= ~(NETIF_F_ALL_CSUM & ~NETIF_F_HW_CSUM);
1834 dev->features |= dev->hw_features;
1837 static int team_newlink(struct net *src_net, struct net_device *dev,
1838 struct nlattr *tb[], struct nlattr *data[])
1842 if (tb[IFLA_ADDRESS] == NULL)
1843 eth_hw_addr_random(dev);
1845 err = register_netdevice(dev);
1852 static int team_validate(struct nlattr *tb[], struct nlattr *data[])
1854 if (tb[IFLA_ADDRESS]) {
1855 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
1857 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
1858 return -EADDRNOTAVAIL;
1863 static unsigned int team_get_num_tx_queues(void)
1865 return TEAM_DEFAULT_NUM_TX_QUEUES;
1868 static unsigned int team_get_num_rx_queues(void)
1870 return TEAM_DEFAULT_NUM_RX_QUEUES;
1873 static struct rtnl_link_ops team_link_ops __read_mostly = {
1875 .priv_size = sizeof(struct team),
1876 .setup = team_setup,
1877 .newlink = team_newlink,
1878 .validate = team_validate,
1879 .get_num_tx_queues = team_get_num_tx_queues,
1880 .get_num_rx_queues = team_get_num_rx_queues,
1884 /***********************************
1885 * Generic netlink custom interface
1886 ***********************************/
1888 static struct genl_family team_nl_family = {
1889 .id = GENL_ID_GENERATE,
1890 .name = TEAM_GENL_NAME,
1891 .version = TEAM_GENL_VERSION,
1892 .maxattr = TEAM_ATTR_MAX,
1896 static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
1897 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
1898 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
1899 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
1900 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
1903 static const struct nla_policy
1904 team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
1905 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
1906 [TEAM_ATTR_OPTION_NAME] = {
1908 .len = TEAM_STRING_MAX_LEN,
1910 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
1911 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
1912 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
1915 static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
1917 struct sk_buff *msg;
1921 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1925 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
1926 &team_nl_family, 0, TEAM_CMD_NOOP);
1932 genlmsg_end(msg, hdr);
1934 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid);
1943 * Netlink cmd functions should be locked by following two functions.
1944 * Since dev gets held here, that ensures dev won't disappear in between.
1946 static struct team *team_nl_team_get(struct genl_info *info)
1948 struct net *net = genl_info_net(info);
1950 struct net_device *dev;
1953 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
1956 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
1957 dev = dev_get_by_index(net, ifindex);
1958 if (!dev || dev->netdev_ops != &team_netdev_ops) {
1964 team = netdev_priv(dev);
1965 mutex_lock(&team->lock);
1969 static void team_nl_team_put(struct team *team)
1971 mutex_unlock(&team->lock);
1975 typedef int team_nl_send_func_t(struct sk_buff *skb,
1976 struct team *team, u32 portid);
1978 static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid)
1980 return genlmsg_unicast(dev_net(team->dev), skb, portid);
1983 static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
1984 struct team_option_inst *opt_inst)
1986 struct nlattr *option_item;
1987 struct team_option *option = opt_inst->option;
1988 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
1989 struct team_gsetter_ctx ctx;
1992 ctx.info = opt_inst_info;
1993 err = team_option_get(team, opt_inst, &ctx);
1997 option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
2001 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
2003 if (opt_inst_info->port &&
2004 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
2005 opt_inst_info->port->dev->ifindex))
2007 if (opt_inst->option->array_size &&
2008 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
2009 opt_inst_info->array_index))
2012 switch (option->type) {
2013 case TEAM_OPTION_TYPE_U32:
2014 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
2016 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
2019 case TEAM_OPTION_TYPE_STRING:
2020 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
2022 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
2026 case TEAM_OPTION_TYPE_BINARY:
2027 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
2029 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
2030 ctx.data.bin_val.ptr))
2033 case TEAM_OPTION_TYPE_BOOL:
2034 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
2036 if (ctx.data.bool_val &&
2037 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
2040 case TEAM_OPTION_TYPE_S32:
2041 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32))
2043 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val))
2049 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
2051 if (opt_inst->changed) {
2052 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
2054 opt_inst->changed = false;
2056 nla_nest_end(skb, option_item);
2060 nla_nest_cancel(skb, option_item);
2064 static int __send_and_alloc_skb(struct sk_buff **pskb,
2065 struct team *team, u32 portid,
2066 team_nl_send_func_t *send_func)
2071 err = send_func(*pskb, team, portid);
2075 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2081 static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
2082 int flags, team_nl_send_func_t *send_func,
2083 struct list_head *sel_opt_inst_list)
2085 struct nlattr *option_list;
2086 struct nlmsghdr *nlh;
2088 struct team_option_inst *opt_inst;
2090 struct sk_buff *skb = NULL;
2094 opt_inst = list_first_entry(sel_opt_inst_list,
2095 struct team_option_inst, tmp_list);
2098 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2102 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2103 TEAM_CMD_OPTIONS_GET);
2107 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2108 goto nla_put_failure;
2109 option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION);
2111 goto nla_put_failure;
2115 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
2116 err = team_nl_fill_one_option_get(skb, team, opt_inst);
2118 if (err == -EMSGSIZE) {
2129 nla_nest_end(skb, option_list);
2130 genlmsg_end(skb, hdr);
2135 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2137 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2143 return send_func(skb, team, portid);
2148 genlmsg_cancel(skb, hdr);
2153 static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
2156 struct team_option_inst *opt_inst;
2158 LIST_HEAD(sel_opt_inst_list);
2160 team = team_nl_team_get(info);
2164 list_for_each_entry(opt_inst, &team->option_inst_list, list)
2165 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2166 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq,
2167 NLM_F_ACK, team_nl_send_unicast,
2168 &sel_opt_inst_list);
2170 team_nl_team_put(team);
2175 static int team_nl_send_event_options_get(struct team *team,
2176 struct list_head *sel_opt_inst_list);
2178 static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
2183 struct nlattr *nl_option;
2184 LIST_HEAD(opt_inst_list);
2186 team = team_nl_team_get(info);
2191 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
2196 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
2197 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
2198 struct nlattr *attr;
2199 struct nlattr *attr_data;
2200 enum team_option_type opt_type;
2201 int opt_port_ifindex = 0; /* != 0 for per-port options */
2202 u32 opt_array_index = 0;
2203 bool opt_is_array = false;
2204 struct team_option_inst *opt_inst;
2206 bool opt_found = false;
2208 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
2212 err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX,
2213 nl_option, team_nl_option_policy);
2216 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
2217 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
2221 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
2223 opt_type = TEAM_OPTION_TYPE_U32;
2226 opt_type = TEAM_OPTION_TYPE_STRING;
2229 opt_type = TEAM_OPTION_TYPE_BINARY;
2232 opt_type = TEAM_OPTION_TYPE_BOOL;
2235 opt_type = TEAM_OPTION_TYPE_S32;
2241 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
2242 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
2247 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
2248 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
2250 opt_port_ifindex = nla_get_u32(attr);
2252 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
2254 opt_is_array = true;
2255 opt_array_index = nla_get_u32(attr);
2258 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2259 struct team_option *option = opt_inst->option;
2260 struct team_gsetter_ctx ctx;
2261 struct team_option_inst_info *opt_inst_info;
2264 opt_inst_info = &opt_inst->info;
2265 tmp_ifindex = opt_inst_info->port ?
2266 opt_inst_info->port->dev->ifindex : 0;
2267 if (option->type != opt_type ||
2268 strcmp(option->name, opt_name) ||
2269 tmp_ifindex != opt_port_ifindex ||
2270 (option->array_size && !opt_is_array) ||
2271 opt_inst_info->array_index != opt_array_index)
2274 ctx.info = opt_inst_info;
2276 case TEAM_OPTION_TYPE_U32:
2277 ctx.data.u32_val = nla_get_u32(attr_data);
2279 case TEAM_OPTION_TYPE_STRING:
2280 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2284 ctx.data.str_val = nla_data(attr_data);
2286 case TEAM_OPTION_TYPE_BINARY:
2287 ctx.data.bin_val.len = nla_len(attr_data);
2288 ctx.data.bin_val.ptr = nla_data(attr_data);
2290 case TEAM_OPTION_TYPE_BOOL:
2291 ctx.data.bool_val = attr_data ? true : false;
2293 case TEAM_OPTION_TYPE_S32:
2294 ctx.data.s32_val = nla_get_s32(attr_data);
2299 err = team_option_set(team, opt_inst, &ctx);
2302 opt_inst->changed = true;
2303 list_add(&opt_inst->tmp_list, &opt_inst_list);
2311 err = team_nl_send_event_options_get(team, &opt_inst_list);
2314 team_nl_team_put(team);
2319 static int team_nl_fill_one_port_get(struct sk_buff *skb,
2320 struct team_port *port)
2322 struct nlattr *port_item;
2324 port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT);
2327 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2329 if (port->changed) {
2330 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2332 port->changed = false;
2334 if ((port->removed &&
2335 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2336 (port->state.linkup &&
2337 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2338 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2339 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2341 nla_nest_end(skb, port_item);
2345 nla_nest_cancel(skb, port_item);
2349 static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,
2350 int flags, team_nl_send_func_t *send_func,
2351 struct team_port *one_port)
2353 struct nlattr *port_list;
2354 struct nlmsghdr *nlh;
2356 struct team_port *port;
2358 struct sk_buff *skb = NULL;
2362 port = list_first_entry(&team->port_list, struct team_port, list);
2365 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2369 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2370 TEAM_CMD_PORT_LIST_GET);
2374 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2375 goto nla_put_failure;
2376 port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT);
2378 goto nla_put_failure;
2383 /* If one port is selected, called wants to send port list containing
2384 * only this port. Otherwise go through all listed ports and send all
2387 err = team_nl_fill_one_port_get(skb, one_port);
2391 list_for_each_entry(port, &team->port_list, list) {
2392 err = team_nl_fill_one_port_get(skb, port);
2394 if (err == -EMSGSIZE) {
2406 nla_nest_end(skb, port_list);
2407 genlmsg_end(skb, hdr);
2412 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2414 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2420 return send_func(skb, team, portid);
2425 genlmsg_cancel(skb, hdr);
2430 static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2431 struct genl_info *info)
2436 team = team_nl_team_get(info);
2440 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq,
2441 NLM_F_ACK, team_nl_send_unicast, NULL);
2443 team_nl_team_put(team);
2448 static struct genl_ops team_nl_ops[] = {
2450 .cmd = TEAM_CMD_NOOP,
2451 .doit = team_nl_cmd_noop,
2452 .policy = team_nl_policy,
2455 .cmd = TEAM_CMD_OPTIONS_SET,
2456 .doit = team_nl_cmd_options_set,
2457 .policy = team_nl_policy,
2458 .flags = GENL_ADMIN_PERM,
2461 .cmd = TEAM_CMD_OPTIONS_GET,
2462 .doit = team_nl_cmd_options_get,
2463 .policy = team_nl_policy,
2464 .flags = GENL_ADMIN_PERM,
2467 .cmd = TEAM_CMD_PORT_LIST_GET,
2468 .doit = team_nl_cmd_port_list_get,
2469 .policy = team_nl_policy,
2470 .flags = GENL_ADMIN_PERM,
2474 static struct genl_multicast_group team_change_event_mcgrp = {
2475 .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME,
2478 static int team_nl_send_multicast(struct sk_buff *skb,
2479 struct team *team, u32 portid)
2481 return genlmsg_multicast_netns(dev_net(team->dev), skb, 0,
2482 team_change_event_mcgrp.id, GFP_KERNEL);
2485 static int team_nl_send_event_options_get(struct team *team,
2486 struct list_head *sel_opt_inst_list)
2488 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2492 static int team_nl_send_event_port_get(struct team *team,
2493 struct team_port *port)
2495 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast,
2499 static int team_nl_init(void)
2503 err = genl_register_family_with_ops(&team_nl_family, team_nl_ops,
2504 ARRAY_SIZE(team_nl_ops));
2508 err = genl_register_mc_group(&team_nl_family, &team_change_event_mcgrp);
2510 goto err_change_event_grp_reg;
2514 err_change_event_grp_reg:
2515 genl_unregister_family(&team_nl_family);
2520 static void team_nl_fini(void)
2522 genl_unregister_family(&team_nl_family);
2530 static void __team_options_change_check(struct team *team)
2533 struct team_option_inst *opt_inst;
2534 LIST_HEAD(sel_opt_inst_list);
2536 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2537 if (opt_inst->changed)
2538 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2540 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
2541 if (err && err != -ESRCH)
2542 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2546 /* rtnl lock is held */
2548 static void __team_port_change_send(struct team_port *port, bool linkup)
2552 port->changed = true;
2553 port->state.linkup = linkup;
2554 team_refresh_port_linkup(port);
2556 struct ethtool_cmd ecmd;
2558 err = __ethtool_get_settings(port->dev, &ecmd);
2560 port->state.speed = ethtool_cmd_speed(&ecmd);
2561 port->state.duplex = ecmd.duplex;
2565 port->state.speed = 0;
2566 port->state.duplex = 0;
2569 err = team_nl_send_event_port_get(port->team, port);
2570 if (err && err != -ESRCH)
2571 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
2572 port->dev->name, err);
2576 static void __team_carrier_check(struct team *team)
2578 struct team_port *port;
2581 if (team->user_carrier_enabled)
2584 team_linkup = false;
2585 list_for_each_entry(port, &team->port_list, list) {
2593 netif_carrier_on(team->dev);
2595 netif_carrier_off(team->dev);
2598 static void __team_port_change_check(struct team_port *port, bool linkup)
2600 if (port->state.linkup != linkup)
2601 __team_port_change_send(port, linkup);
2602 __team_carrier_check(port->team);
2605 static void __team_port_change_port_added(struct team_port *port, bool linkup)
2607 __team_port_change_send(port, linkup);
2608 __team_carrier_check(port->team);
2611 static void __team_port_change_port_removed(struct team_port *port)
2613 port->removed = true;
2614 __team_port_change_send(port, false);
2615 __team_carrier_check(port->team);
2618 static void team_port_change_check(struct team_port *port, bool linkup)
2620 struct team *team = port->team;
2622 mutex_lock(&team->lock);
2623 __team_port_change_check(port, linkup);
2624 mutex_unlock(&team->lock);
2628 /************************************
2629 * Net device notifier event handler
2630 ************************************/
2632 static int team_device_event(struct notifier_block *unused,
2633 unsigned long event, void *ptr)
2635 struct net_device *dev = (struct net_device *) ptr;
2636 struct team_port *port;
2638 port = team_port_get_rtnl(dev);
2644 if (netif_carrier_ok(dev))
2645 team_port_change_check(port, true);
2647 team_port_change_check(port, false);
2649 if (netif_running(port->dev))
2650 team_port_change_check(port,
2651 !!netif_carrier_ok(port->dev));
2653 case NETDEV_UNREGISTER:
2654 team_del_slave(port->team->dev, dev);
2656 case NETDEV_FEAT_CHANGE:
2657 team_compute_features(port->team);
2659 case NETDEV_CHANGEMTU:
2660 /* Forbid to change mtu of underlaying device */
2662 case NETDEV_PRE_TYPE_CHANGE:
2663 /* Forbid to change type of underlaying device */
2669 static struct notifier_block team_notifier_block __read_mostly = {
2670 .notifier_call = team_device_event,
2674 /***********************
2675 * Module init and exit
2676 ***********************/
2678 static int __init team_module_init(void)
2682 register_netdevice_notifier(&team_notifier_block);
2684 err = rtnl_link_register(&team_link_ops);
2688 err = team_nl_init();
2695 rtnl_link_unregister(&team_link_ops);
2698 unregister_netdevice_notifier(&team_notifier_block);
2703 static void __exit team_module_exit(void)
2706 rtnl_link_unregister(&team_link_ops);
2707 unregister_netdevice_notifier(&team_notifier_block);
2710 module_init(team_module_init);
2711 module_exit(team_module_exit);
2713 MODULE_LICENSE("GPL v2");
2714 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
2715 MODULE_DESCRIPTION("Ethernet team device driver");
2716 MODULE_ALIAS_RTNL_LINK(DRV_NAME);