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_uc_unsync(port_dev, dev);
1142 dev_mc_unsync(port_dev, dev);
1143 dev_close(port_dev);
1144 team_port_leave(team, port);
1146 __team_option_inst_mark_removed_port(team, port);
1147 __team_options_change_check(team);
1148 __team_option_inst_del_port(team, port);
1149 __team_port_change_port_removed(port);
1151 team_port_set_orig_dev_addr(port);
1152 dev_set_mtu(port_dev, port->orig.mtu);
1155 netdev_info(dev, "Port device %s removed\n", portname);
1156 __team_compute_features(team);
1166 static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
1168 ctx->data.str_val = team->mode->kind;
1172 static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
1174 return team_change_mode(team, ctx->data.str_val);
1177 static int team_port_en_option_get(struct team *team,
1178 struct team_gsetter_ctx *ctx)
1180 struct team_port *port = ctx->info->port;
1182 ctx->data.bool_val = team_port_enabled(port);
1186 static int team_port_en_option_set(struct team *team,
1187 struct team_gsetter_ctx *ctx)
1189 struct team_port *port = ctx->info->port;
1191 if (ctx->data.bool_val)
1192 team_port_enable(team, port);
1194 team_port_disable(team, port);
1198 static int team_user_linkup_option_get(struct team *team,
1199 struct team_gsetter_ctx *ctx)
1201 struct team_port *port = ctx->info->port;
1203 ctx->data.bool_val = port->user.linkup;
1207 static int team_user_linkup_option_set(struct team *team,
1208 struct team_gsetter_ctx *ctx)
1210 struct team_port *port = ctx->info->port;
1212 port->user.linkup = ctx->data.bool_val;
1213 team_refresh_port_linkup(port);
1217 static int team_user_linkup_en_option_get(struct team *team,
1218 struct team_gsetter_ctx *ctx)
1220 struct team_port *port = ctx->info->port;
1222 ctx->data.bool_val = port->user.linkup_enabled;
1226 static int team_user_linkup_en_option_set(struct team *team,
1227 struct team_gsetter_ctx *ctx)
1229 struct team_port *port = ctx->info->port;
1231 port->user.linkup_enabled = ctx->data.bool_val;
1232 team_refresh_port_linkup(port);
1236 static int team_priority_option_get(struct team *team,
1237 struct team_gsetter_ctx *ctx)
1239 struct team_port *port = ctx->info->port;
1241 ctx->data.s32_val = port->priority;
1245 static int team_priority_option_set(struct team *team,
1246 struct team_gsetter_ctx *ctx)
1248 struct team_port *port = ctx->info->port;
1250 port->priority = ctx->data.s32_val;
1251 team_queue_override_port_refresh(team, port);
1255 static int team_queue_id_option_get(struct team *team,
1256 struct team_gsetter_ctx *ctx)
1258 struct team_port *port = ctx->info->port;
1260 ctx->data.u32_val = port->queue_id;
1264 static int team_queue_id_option_set(struct team *team,
1265 struct team_gsetter_ctx *ctx)
1267 struct team_port *port = ctx->info->port;
1269 if (port->queue_id == ctx->data.u32_val)
1271 if (ctx->data.u32_val >= team->dev->real_num_tx_queues)
1273 port->queue_id = ctx->data.u32_val;
1274 team_queue_override_port_refresh(team, port);
1279 static const struct team_option team_options[] = {
1282 .type = TEAM_OPTION_TYPE_STRING,
1283 .getter = team_mode_option_get,
1284 .setter = team_mode_option_set,
1288 .type = TEAM_OPTION_TYPE_BOOL,
1290 .getter = team_port_en_option_get,
1291 .setter = team_port_en_option_set,
1294 .name = "user_linkup",
1295 .type = TEAM_OPTION_TYPE_BOOL,
1297 .getter = team_user_linkup_option_get,
1298 .setter = team_user_linkup_option_set,
1301 .name = "user_linkup_enabled",
1302 .type = TEAM_OPTION_TYPE_BOOL,
1304 .getter = team_user_linkup_en_option_get,
1305 .setter = team_user_linkup_en_option_set,
1309 .type = TEAM_OPTION_TYPE_S32,
1311 .getter = team_priority_option_get,
1312 .setter = team_priority_option_set,
1316 .type = TEAM_OPTION_TYPE_U32,
1318 .getter = team_queue_id_option_get,
1319 .setter = team_queue_id_option_set,
1323 static struct lock_class_key team_netdev_xmit_lock_key;
1324 static struct lock_class_key team_netdev_addr_lock_key;
1325 static struct lock_class_key team_tx_busylock_key;
1327 static void team_set_lockdep_class_one(struct net_device *dev,
1328 struct netdev_queue *txq,
1331 lockdep_set_class(&txq->_xmit_lock, &team_netdev_xmit_lock_key);
1334 static void team_set_lockdep_class(struct net_device *dev)
1336 lockdep_set_class(&dev->addr_list_lock, &team_netdev_addr_lock_key);
1337 netdev_for_each_tx_queue(dev, team_set_lockdep_class_one, NULL);
1338 dev->qdisc_tx_busylock = &team_tx_busylock_key;
1341 static int team_init(struct net_device *dev)
1343 struct team *team = netdev_priv(dev);
1348 mutex_init(&team->lock);
1349 team_set_no_mode(team);
1351 team->pcpu_stats = alloc_percpu(struct team_pcpu_stats);
1352 if (!team->pcpu_stats)
1355 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
1356 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
1357 INIT_LIST_HEAD(&team->port_list);
1358 err = team_queue_override_init(team);
1360 goto err_team_queue_override_init;
1362 team_adjust_ops(team);
1364 INIT_LIST_HEAD(&team->option_list);
1365 INIT_LIST_HEAD(&team->option_inst_list);
1366 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1368 goto err_options_register;
1369 netif_carrier_off(dev);
1371 team_set_lockdep_class(dev);
1375 err_options_register:
1376 team_queue_override_fini(team);
1377 err_team_queue_override_init:
1378 free_percpu(team->pcpu_stats);
1383 static void team_uninit(struct net_device *dev)
1385 struct team *team = netdev_priv(dev);
1386 struct team_port *port;
1387 struct team_port *tmp;
1389 mutex_lock(&team->lock);
1390 list_for_each_entry_safe(port, tmp, &team->port_list, list)
1391 team_port_del(team, port->dev);
1393 __team_change_mode(team, NULL); /* cleanup */
1394 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
1395 team_queue_override_fini(team);
1396 mutex_unlock(&team->lock);
1399 static void team_destructor(struct net_device *dev)
1401 struct team *team = netdev_priv(dev);
1403 free_percpu(team->pcpu_stats);
1407 static int team_open(struct net_device *dev)
1412 static int team_close(struct net_device *dev)
1418 * note: already called with rcu_read_lock
1420 static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1422 struct team *team = netdev_priv(dev);
1424 unsigned int len = skb->len;
1426 tx_success = team_queue_override_transmit(team, skb);
1428 tx_success = team->ops.transmit(team, skb);
1430 struct team_pcpu_stats *pcpu_stats;
1432 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1433 u64_stats_update_begin(&pcpu_stats->syncp);
1434 pcpu_stats->tx_packets++;
1435 pcpu_stats->tx_bytes += len;
1436 u64_stats_update_end(&pcpu_stats->syncp);
1438 this_cpu_inc(team->pcpu_stats->tx_dropped);
1441 return NETDEV_TX_OK;
1444 static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb)
1447 * This helper function exists to help dev_pick_tx get the correct
1448 * destination queue. Using a helper function skips a call to
1449 * skb_tx_hash and will put the skbs in the queue we expect on their
1450 * way down to the team driver.
1452 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1455 * Save the original txq to restore before passing to the driver
1457 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1459 if (unlikely(txq >= dev->real_num_tx_queues)) {
1461 txq -= dev->real_num_tx_queues;
1462 } while (txq >= dev->real_num_tx_queues);
1467 static void team_change_rx_flags(struct net_device *dev, int change)
1469 struct team *team = netdev_priv(dev);
1470 struct team_port *port;
1474 list_for_each_entry_rcu(port, &team->port_list, list) {
1475 if (change & IFF_PROMISC) {
1476 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1477 dev_set_promiscuity(port->dev, inc);
1479 if (change & IFF_ALLMULTI) {
1480 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1481 dev_set_allmulti(port->dev, inc);
1487 static void team_set_rx_mode(struct net_device *dev)
1489 struct team *team = netdev_priv(dev);
1490 struct team_port *port;
1493 list_for_each_entry_rcu(port, &team->port_list, list) {
1494 dev_uc_sync(port->dev, dev);
1495 dev_mc_sync(port->dev, dev);
1500 static int team_set_mac_address(struct net_device *dev, void *p)
1502 struct sockaddr *addr = p;
1503 struct team *team = netdev_priv(dev);
1504 struct team_port *port;
1506 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data))
1507 return -EADDRNOTAVAIL;
1508 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1510 list_for_each_entry_rcu(port, &team->port_list, list)
1511 if (team->ops.port_change_dev_addr)
1512 team->ops.port_change_dev_addr(team, port);
1517 static int team_change_mtu(struct net_device *dev, int new_mtu)
1519 struct team *team = netdev_priv(dev);
1520 struct team_port *port;
1524 * Alhough this is reader, it's guarded by team lock. It's not possible
1525 * to traverse list in reverse under rcu_read_lock
1527 mutex_lock(&team->lock);
1528 list_for_each_entry(port, &team->port_list, list) {
1529 err = dev_set_mtu(port->dev, new_mtu);
1531 netdev_err(dev, "Device %s failed to change mtu",
1536 mutex_unlock(&team->lock);
1543 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1544 dev_set_mtu(port->dev, dev->mtu);
1545 mutex_unlock(&team->lock);
1550 static struct rtnl_link_stats64 *
1551 team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1553 struct team *team = netdev_priv(dev);
1554 struct team_pcpu_stats *p;
1555 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1556 u32 rx_dropped = 0, tx_dropped = 0;
1560 for_each_possible_cpu(i) {
1561 p = per_cpu_ptr(team->pcpu_stats, i);
1563 start = u64_stats_fetch_begin_bh(&p->syncp);
1564 rx_packets = p->rx_packets;
1565 rx_bytes = p->rx_bytes;
1566 rx_multicast = p->rx_multicast;
1567 tx_packets = p->tx_packets;
1568 tx_bytes = p->tx_bytes;
1569 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
1571 stats->rx_packets += rx_packets;
1572 stats->rx_bytes += rx_bytes;
1573 stats->multicast += rx_multicast;
1574 stats->tx_packets += tx_packets;
1575 stats->tx_bytes += tx_bytes;
1577 * rx_dropped & tx_dropped are u32, updated
1578 * without syncp protection.
1580 rx_dropped += p->rx_dropped;
1581 tx_dropped += p->tx_dropped;
1583 stats->rx_dropped = rx_dropped;
1584 stats->tx_dropped = tx_dropped;
1588 static int team_vlan_rx_add_vid(struct net_device *dev, uint16_t vid)
1590 struct team *team = netdev_priv(dev);
1591 struct team_port *port;
1595 * Alhough this is reader, it's guarded by team lock. It's not possible
1596 * to traverse list in reverse under rcu_read_lock
1598 mutex_lock(&team->lock);
1599 list_for_each_entry(port, &team->port_list, list) {
1600 err = vlan_vid_add(port->dev, vid);
1604 mutex_unlock(&team->lock);
1609 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1610 vlan_vid_del(port->dev, vid);
1611 mutex_unlock(&team->lock);
1616 static int team_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid)
1618 struct team *team = netdev_priv(dev);
1619 struct team_port *port;
1622 list_for_each_entry_rcu(port, &team->port_list, list)
1623 vlan_vid_del(port->dev, vid);
1629 #ifdef CONFIG_NET_POLL_CONTROLLER
1630 static void team_poll_controller(struct net_device *dev)
1634 static void __team_netpoll_cleanup(struct team *team)
1636 struct team_port *port;
1638 list_for_each_entry(port, &team->port_list, list)
1639 team_port_disable_netpoll(port);
1642 static void team_netpoll_cleanup(struct net_device *dev)
1644 struct team *team = netdev_priv(dev);
1646 mutex_lock(&team->lock);
1647 __team_netpoll_cleanup(team);
1648 mutex_unlock(&team->lock);
1651 static int team_netpoll_setup(struct net_device *dev,
1652 struct netpoll_info *npifo, gfp_t gfp)
1654 struct team *team = netdev_priv(dev);
1655 struct team_port *port;
1658 mutex_lock(&team->lock);
1659 list_for_each_entry(port, &team->port_list, list) {
1660 err = team_port_enable_netpoll(team, port, gfp);
1662 __team_netpoll_cleanup(team);
1666 mutex_unlock(&team->lock);
1671 static int team_add_slave(struct net_device *dev, struct net_device *port_dev)
1673 struct team *team = netdev_priv(dev);
1676 mutex_lock(&team->lock);
1677 err = team_port_add(team, port_dev);
1678 mutex_unlock(&team->lock);
1682 static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1684 struct team *team = netdev_priv(dev);
1687 mutex_lock(&team->lock);
1688 err = team_port_del(team, port_dev);
1689 mutex_unlock(&team->lock);
1693 static netdev_features_t team_fix_features(struct net_device *dev,
1694 netdev_features_t features)
1696 struct team_port *port;
1697 struct team *team = netdev_priv(dev);
1698 netdev_features_t mask;
1701 features &= ~NETIF_F_ONE_FOR_ALL;
1702 features |= NETIF_F_ALL_FOR_ALL;
1705 list_for_each_entry_rcu(port, &team->port_list, list) {
1706 features = netdev_increment_features(features,
1707 port->dev->features,
1714 static int team_change_carrier(struct net_device *dev, bool new_carrier)
1716 struct team *team = netdev_priv(dev);
1718 team->user_carrier_enabled = true;
1721 netif_carrier_on(dev);
1723 netif_carrier_off(dev);
1727 static const struct net_device_ops team_netdev_ops = {
1728 .ndo_init = team_init,
1729 .ndo_uninit = team_uninit,
1730 .ndo_open = team_open,
1731 .ndo_stop = team_close,
1732 .ndo_start_xmit = team_xmit,
1733 .ndo_select_queue = team_select_queue,
1734 .ndo_change_rx_flags = team_change_rx_flags,
1735 .ndo_set_rx_mode = team_set_rx_mode,
1736 .ndo_set_mac_address = team_set_mac_address,
1737 .ndo_change_mtu = team_change_mtu,
1738 .ndo_get_stats64 = team_get_stats64,
1739 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
1740 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
1741 #ifdef CONFIG_NET_POLL_CONTROLLER
1742 .ndo_poll_controller = team_poll_controller,
1743 .ndo_netpoll_setup = team_netpoll_setup,
1744 .ndo_netpoll_cleanup = team_netpoll_cleanup,
1746 .ndo_add_slave = team_add_slave,
1747 .ndo_del_slave = team_del_slave,
1748 .ndo_fix_features = team_fix_features,
1749 .ndo_change_carrier = team_change_carrier,
1752 /***********************
1754 ***********************/
1756 static void team_ethtool_get_drvinfo(struct net_device *dev,
1757 struct ethtool_drvinfo *drvinfo)
1759 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
1760 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
1763 static const struct ethtool_ops team_ethtool_ops = {
1764 .get_drvinfo = team_ethtool_get_drvinfo,
1765 .get_link = ethtool_op_get_link,
1768 /***********************
1769 * rt netlink interface
1770 ***********************/
1772 static void team_setup_by_port(struct net_device *dev,
1773 struct net_device *port_dev)
1775 dev->header_ops = port_dev->header_ops;
1776 dev->type = port_dev->type;
1777 dev->hard_header_len = port_dev->hard_header_len;
1778 dev->addr_len = port_dev->addr_len;
1779 dev->mtu = port_dev->mtu;
1780 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
1781 memcpy(dev->dev_addr, port_dev->dev_addr, port_dev->addr_len);
1784 static int team_dev_type_check_change(struct net_device *dev,
1785 struct net_device *port_dev)
1787 struct team *team = netdev_priv(dev);
1788 char *portname = port_dev->name;
1791 if (dev->type == port_dev->type)
1793 if (!list_empty(&team->port_list)) {
1794 netdev_err(dev, "Device %s is of different type\n", portname);
1797 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev);
1798 err = notifier_to_errno(err);
1800 netdev_err(dev, "Refused to change device type\n");
1805 team_setup_by_port(dev, port_dev);
1806 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev);
1810 static void team_setup(struct net_device *dev)
1814 dev->netdev_ops = &team_netdev_ops;
1815 dev->ethtool_ops = &team_ethtool_ops;
1816 dev->destructor = team_destructor;
1817 dev->tx_queue_len = 0;
1818 dev->flags |= IFF_MULTICAST;
1819 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
1822 * Indicate we support unicast address filtering. That way core won't
1823 * bring us to promisc mode in case a unicast addr is added.
1824 * Let this up to underlay drivers.
1826 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
1828 dev->features |= NETIF_F_LLTX;
1829 dev->features |= NETIF_F_GRO;
1830 dev->hw_features = TEAM_VLAN_FEATURES |
1831 NETIF_F_HW_VLAN_TX |
1832 NETIF_F_HW_VLAN_RX |
1833 NETIF_F_HW_VLAN_FILTER;
1835 dev->hw_features &= ~(NETIF_F_ALL_CSUM & ~NETIF_F_HW_CSUM);
1836 dev->features |= dev->hw_features;
1839 static int team_newlink(struct net *src_net, struct net_device *dev,
1840 struct nlattr *tb[], struct nlattr *data[])
1844 if (tb[IFLA_ADDRESS] == NULL)
1845 eth_hw_addr_random(dev);
1847 err = register_netdevice(dev);
1854 static int team_validate(struct nlattr *tb[], struct nlattr *data[])
1856 if (tb[IFLA_ADDRESS]) {
1857 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
1859 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
1860 return -EADDRNOTAVAIL;
1865 static unsigned int team_get_num_tx_queues(void)
1867 return TEAM_DEFAULT_NUM_TX_QUEUES;
1870 static unsigned int team_get_num_rx_queues(void)
1872 return TEAM_DEFAULT_NUM_RX_QUEUES;
1875 static struct rtnl_link_ops team_link_ops __read_mostly = {
1877 .priv_size = sizeof(struct team),
1878 .setup = team_setup,
1879 .newlink = team_newlink,
1880 .validate = team_validate,
1881 .get_num_tx_queues = team_get_num_tx_queues,
1882 .get_num_rx_queues = team_get_num_rx_queues,
1886 /***********************************
1887 * Generic netlink custom interface
1888 ***********************************/
1890 static struct genl_family team_nl_family = {
1891 .id = GENL_ID_GENERATE,
1892 .name = TEAM_GENL_NAME,
1893 .version = TEAM_GENL_VERSION,
1894 .maxattr = TEAM_ATTR_MAX,
1898 static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
1899 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
1900 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
1901 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
1902 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
1905 static const struct nla_policy
1906 team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
1907 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
1908 [TEAM_ATTR_OPTION_NAME] = {
1910 .len = TEAM_STRING_MAX_LEN,
1912 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
1913 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
1914 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
1917 static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
1919 struct sk_buff *msg;
1923 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1927 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
1928 &team_nl_family, 0, TEAM_CMD_NOOP);
1934 genlmsg_end(msg, hdr);
1936 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid);
1945 * Netlink cmd functions should be locked by following two functions.
1946 * Since dev gets held here, that ensures dev won't disappear in between.
1948 static struct team *team_nl_team_get(struct genl_info *info)
1950 struct net *net = genl_info_net(info);
1952 struct net_device *dev;
1955 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
1958 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
1959 dev = dev_get_by_index(net, ifindex);
1960 if (!dev || dev->netdev_ops != &team_netdev_ops) {
1966 team = netdev_priv(dev);
1967 mutex_lock(&team->lock);
1971 static void team_nl_team_put(struct team *team)
1973 mutex_unlock(&team->lock);
1977 typedef int team_nl_send_func_t(struct sk_buff *skb,
1978 struct team *team, u32 portid);
1980 static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid)
1982 return genlmsg_unicast(dev_net(team->dev), skb, portid);
1985 static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
1986 struct team_option_inst *opt_inst)
1988 struct nlattr *option_item;
1989 struct team_option *option = opt_inst->option;
1990 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
1991 struct team_gsetter_ctx ctx;
1994 ctx.info = opt_inst_info;
1995 err = team_option_get(team, opt_inst, &ctx);
1999 option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
2003 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
2005 if (opt_inst_info->port &&
2006 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
2007 opt_inst_info->port->dev->ifindex))
2009 if (opt_inst->option->array_size &&
2010 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
2011 opt_inst_info->array_index))
2014 switch (option->type) {
2015 case TEAM_OPTION_TYPE_U32:
2016 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
2018 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
2021 case TEAM_OPTION_TYPE_STRING:
2022 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
2024 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
2028 case TEAM_OPTION_TYPE_BINARY:
2029 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
2031 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
2032 ctx.data.bin_val.ptr))
2035 case TEAM_OPTION_TYPE_BOOL:
2036 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
2038 if (ctx.data.bool_val &&
2039 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
2042 case TEAM_OPTION_TYPE_S32:
2043 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32))
2045 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val))
2051 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
2053 if (opt_inst->changed) {
2054 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
2056 opt_inst->changed = false;
2058 nla_nest_end(skb, option_item);
2062 nla_nest_cancel(skb, option_item);
2066 static int __send_and_alloc_skb(struct sk_buff **pskb,
2067 struct team *team, u32 portid,
2068 team_nl_send_func_t *send_func)
2073 err = send_func(*pskb, team, portid);
2077 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2083 static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
2084 int flags, team_nl_send_func_t *send_func,
2085 struct list_head *sel_opt_inst_list)
2087 struct nlattr *option_list;
2088 struct nlmsghdr *nlh;
2090 struct team_option_inst *opt_inst;
2092 struct sk_buff *skb = NULL;
2096 opt_inst = list_first_entry(sel_opt_inst_list,
2097 struct team_option_inst, tmp_list);
2100 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2104 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2105 TEAM_CMD_OPTIONS_GET);
2109 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2110 goto nla_put_failure;
2111 option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION);
2113 goto nla_put_failure;
2117 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
2118 err = team_nl_fill_one_option_get(skb, team, opt_inst);
2120 if (err == -EMSGSIZE) {
2131 nla_nest_end(skb, option_list);
2132 genlmsg_end(skb, hdr);
2137 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2139 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2145 return send_func(skb, team, portid);
2150 genlmsg_cancel(skb, hdr);
2155 static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
2158 struct team_option_inst *opt_inst;
2160 LIST_HEAD(sel_opt_inst_list);
2162 team = team_nl_team_get(info);
2166 list_for_each_entry(opt_inst, &team->option_inst_list, list)
2167 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2168 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq,
2169 NLM_F_ACK, team_nl_send_unicast,
2170 &sel_opt_inst_list);
2172 team_nl_team_put(team);
2177 static int team_nl_send_event_options_get(struct team *team,
2178 struct list_head *sel_opt_inst_list);
2180 static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
2185 struct nlattr *nl_option;
2186 LIST_HEAD(opt_inst_list);
2188 team = team_nl_team_get(info);
2193 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
2198 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
2199 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
2200 struct nlattr *attr;
2201 struct nlattr *attr_data;
2202 enum team_option_type opt_type;
2203 int opt_port_ifindex = 0; /* != 0 for per-port options */
2204 u32 opt_array_index = 0;
2205 bool opt_is_array = false;
2206 struct team_option_inst *opt_inst;
2208 bool opt_found = false;
2210 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
2214 err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX,
2215 nl_option, team_nl_option_policy);
2218 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
2219 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
2223 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
2225 opt_type = TEAM_OPTION_TYPE_U32;
2228 opt_type = TEAM_OPTION_TYPE_STRING;
2231 opt_type = TEAM_OPTION_TYPE_BINARY;
2234 opt_type = TEAM_OPTION_TYPE_BOOL;
2237 opt_type = TEAM_OPTION_TYPE_S32;
2243 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
2244 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
2249 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
2250 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
2252 opt_port_ifindex = nla_get_u32(attr);
2254 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
2256 opt_is_array = true;
2257 opt_array_index = nla_get_u32(attr);
2260 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2261 struct team_option *option = opt_inst->option;
2262 struct team_gsetter_ctx ctx;
2263 struct team_option_inst_info *opt_inst_info;
2266 opt_inst_info = &opt_inst->info;
2267 tmp_ifindex = opt_inst_info->port ?
2268 opt_inst_info->port->dev->ifindex : 0;
2269 if (option->type != opt_type ||
2270 strcmp(option->name, opt_name) ||
2271 tmp_ifindex != opt_port_ifindex ||
2272 (option->array_size && !opt_is_array) ||
2273 opt_inst_info->array_index != opt_array_index)
2276 ctx.info = opt_inst_info;
2278 case TEAM_OPTION_TYPE_U32:
2279 ctx.data.u32_val = nla_get_u32(attr_data);
2281 case TEAM_OPTION_TYPE_STRING:
2282 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2286 ctx.data.str_val = nla_data(attr_data);
2288 case TEAM_OPTION_TYPE_BINARY:
2289 ctx.data.bin_val.len = nla_len(attr_data);
2290 ctx.data.bin_val.ptr = nla_data(attr_data);
2292 case TEAM_OPTION_TYPE_BOOL:
2293 ctx.data.bool_val = attr_data ? true : false;
2295 case TEAM_OPTION_TYPE_S32:
2296 ctx.data.s32_val = nla_get_s32(attr_data);
2301 err = team_option_set(team, opt_inst, &ctx);
2304 opt_inst->changed = true;
2305 list_add(&opt_inst->tmp_list, &opt_inst_list);
2313 err = team_nl_send_event_options_get(team, &opt_inst_list);
2316 team_nl_team_put(team);
2321 static int team_nl_fill_one_port_get(struct sk_buff *skb,
2322 struct team_port *port)
2324 struct nlattr *port_item;
2326 port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT);
2329 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2331 if (port->changed) {
2332 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2334 port->changed = false;
2336 if ((port->removed &&
2337 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2338 (port->state.linkup &&
2339 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2340 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2341 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2343 nla_nest_end(skb, port_item);
2347 nla_nest_cancel(skb, port_item);
2351 static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,
2352 int flags, team_nl_send_func_t *send_func,
2353 struct team_port *one_port)
2355 struct nlattr *port_list;
2356 struct nlmsghdr *nlh;
2358 struct team_port *port;
2360 struct sk_buff *skb = NULL;
2364 port = list_first_entry(&team->port_list, struct team_port, list);
2367 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2371 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2372 TEAM_CMD_PORT_LIST_GET);
2376 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2377 goto nla_put_failure;
2378 port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT);
2380 goto nla_put_failure;
2385 /* If one port is selected, called wants to send port list containing
2386 * only this port. Otherwise go through all listed ports and send all
2389 err = team_nl_fill_one_port_get(skb, one_port);
2393 list_for_each_entry(port, &team->port_list, list) {
2394 err = team_nl_fill_one_port_get(skb, port);
2396 if (err == -EMSGSIZE) {
2408 nla_nest_end(skb, port_list);
2409 genlmsg_end(skb, hdr);
2414 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2416 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2422 return send_func(skb, team, portid);
2427 genlmsg_cancel(skb, hdr);
2432 static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2433 struct genl_info *info)
2438 team = team_nl_team_get(info);
2442 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq,
2443 NLM_F_ACK, team_nl_send_unicast, NULL);
2445 team_nl_team_put(team);
2450 static struct genl_ops team_nl_ops[] = {
2452 .cmd = TEAM_CMD_NOOP,
2453 .doit = team_nl_cmd_noop,
2454 .policy = team_nl_policy,
2457 .cmd = TEAM_CMD_OPTIONS_SET,
2458 .doit = team_nl_cmd_options_set,
2459 .policy = team_nl_policy,
2460 .flags = GENL_ADMIN_PERM,
2463 .cmd = TEAM_CMD_OPTIONS_GET,
2464 .doit = team_nl_cmd_options_get,
2465 .policy = team_nl_policy,
2466 .flags = GENL_ADMIN_PERM,
2469 .cmd = TEAM_CMD_PORT_LIST_GET,
2470 .doit = team_nl_cmd_port_list_get,
2471 .policy = team_nl_policy,
2472 .flags = GENL_ADMIN_PERM,
2476 static struct genl_multicast_group team_change_event_mcgrp = {
2477 .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME,
2480 static int team_nl_send_multicast(struct sk_buff *skb,
2481 struct team *team, u32 portid)
2483 return genlmsg_multicast_netns(dev_net(team->dev), skb, 0,
2484 team_change_event_mcgrp.id, GFP_KERNEL);
2487 static int team_nl_send_event_options_get(struct team *team,
2488 struct list_head *sel_opt_inst_list)
2490 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2494 static int team_nl_send_event_port_get(struct team *team,
2495 struct team_port *port)
2497 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast,
2501 static int team_nl_init(void)
2505 err = genl_register_family_with_ops(&team_nl_family, team_nl_ops,
2506 ARRAY_SIZE(team_nl_ops));
2510 err = genl_register_mc_group(&team_nl_family, &team_change_event_mcgrp);
2512 goto err_change_event_grp_reg;
2516 err_change_event_grp_reg:
2517 genl_unregister_family(&team_nl_family);
2522 static void team_nl_fini(void)
2524 genl_unregister_family(&team_nl_family);
2532 static void __team_options_change_check(struct team *team)
2535 struct team_option_inst *opt_inst;
2536 LIST_HEAD(sel_opt_inst_list);
2538 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2539 if (opt_inst->changed)
2540 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2542 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
2543 if (err && err != -ESRCH)
2544 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2548 /* rtnl lock is held */
2550 static void __team_port_change_send(struct team_port *port, bool linkup)
2554 port->changed = true;
2555 port->state.linkup = linkup;
2556 team_refresh_port_linkup(port);
2558 struct ethtool_cmd ecmd;
2560 err = __ethtool_get_settings(port->dev, &ecmd);
2562 port->state.speed = ethtool_cmd_speed(&ecmd);
2563 port->state.duplex = ecmd.duplex;
2567 port->state.speed = 0;
2568 port->state.duplex = 0;
2571 err = team_nl_send_event_port_get(port->team, port);
2572 if (err && err != -ESRCH)
2573 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
2574 port->dev->name, err);
2578 static void __team_carrier_check(struct team *team)
2580 struct team_port *port;
2583 if (team->user_carrier_enabled)
2586 team_linkup = false;
2587 list_for_each_entry(port, &team->port_list, list) {
2595 netif_carrier_on(team->dev);
2597 netif_carrier_off(team->dev);
2600 static void __team_port_change_check(struct team_port *port, bool linkup)
2602 if (port->state.linkup != linkup)
2603 __team_port_change_send(port, linkup);
2604 __team_carrier_check(port->team);
2607 static void __team_port_change_port_added(struct team_port *port, bool linkup)
2609 __team_port_change_send(port, linkup);
2610 __team_carrier_check(port->team);
2613 static void __team_port_change_port_removed(struct team_port *port)
2615 port->removed = true;
2616 __team_port_change_send(port, false);
2617 __team_carrier_check(port->team);
2620 static void team_port_change_check(struct team_port *port, bool linkup)
2622 struct team *team = port->team;
2624 mutex_lock(&team->lock);
2625 __team_port_change_check(port, linkup);
2626 mutex_unlock(&team->lock);
2630 /************************************
2631 * Net device notifier event handler
2632 ************************************/
2634 static int team_device_event(struct notifier_block *unused,
2635 unsigned long event, void *ptr)
2637 struct net_device *dev = (struct net_device *) ptr;
2638 struct team_port *port;
2640 port = team_port_get_rtnl(dev);
2646 if (netif_carrier_ok(dev))
2647 team_port_change_check(port, true);
2649 team_port_change_check(port, false);
2651 if (netif_running(port->dev))
2652 team_port_change_check(port,
2653 !!netif_carrier_ok(port->dev));
2655 case NETDEV_UNREGISTER:
2656 team_del_slave(port->team->dev, dev);
2658 case NETDEV_FEAT_CHANGE:
2659 team_compute_features(port->team);
2661 case NETDEV_CHANGEMTU:
2662 /* Forbid to change mtu of underlaying device */
2664 case NETDEV_PRE_TYPE_CHANGE:
2665 /* Forbid to change type of underlaying device */
2671 static struct notifier_block team_notifier_block __read_mostly = {
2672 .notifier_call = team_device_event,
2676 /***********************
2677 * Module init and exit
2678 ***********************/
2680 static int __init team_module_init(void)
2684 register_netdevice_notifier(&team_notifier_block);
2686 err = rtnl_link_register(&team_link_ops);
2690 err = team_nl_init();
2697 rtnl_link_unregister(&team_link_ops);
2700 unregister_netdevice_notifier(&team_notifier_block);
2705 static void __exit team_module_exit(void)
2708 rtnl_link_unregister(&team_link_ops);
2709 unregister_netdevice_notifier(&team_notifier_block);
2712 module_init(team_module_init);
2713 module_exit(team_module_exit);
2715 MODULE_LICENSE("GPL v2");
2716 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
2717 MODULE_DESCRIPTION("Ethernet team device driver");
2718 MODULE_ALIAS_RTNL_LINK(DRV_NAME);