2 * drivers/net/team/team.c - Network team device driver
3 * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
11 #include <linux/kernel.h>
12 #include <linux/types.h>
13 #include <linux/module.h>
14 #include <linux/init.h>
15 #include <linux/slab.h>
16 #include <linux/rcupdate.h>
17 #include <linux/errno.h>
18 #include <linux/ctype.h>
19 #include <linux/notifier.h>
20 #include <linux/netdevice.h>
21 #include <linux/netpoll.h>
22 #include <linux/if_vlan.h>
23 #include <linux/if_arp.h>
24 #include <linux/socket.h>
25 #include <linux/etherdevice.h>
26 #include <linux/rtnetlink.h>
27 #include <net/rtnetlink.h>
28 #include <net/genetlink.h>
29 #include <net/netlink.h>
30 #include <net/sch_generic.h>
31 #include <generated/utsrelease.h>
32 #include <linux/if_team.h>
34 #define DRV_NAME "team"
41 #define team_port_exists(dev) (dev->priv_flags & IFF_TEAM_PORT)
43 static struct team_port *team_port_get_rcu(const struct net_device *dev)
45 struct team_port *port = rcu_dereference(dev->rx_handler_data);
47 return team_port_exists(dev) ? port : NULL;
50 static struct team_port *team_port_get_rtnl(const struct net_device *dev)
52 struct team_port *port = rtnl_dereference(dev->rx_handler_data);
54 return team_port_exists(dev) ? port : NULL;
58 * Since the ability to change device address for open port device is tested in
59 * team_port_add, this function can be called without control of return value
61 static int __set_port_dev_addr(struct net_device *port_dev,
62 const unsigned char *dev_addr)
66 memcpy(addr.sa_data, dev_addr, port_dev->addr_len);
67 addr.sa_family = port_dev->type;
68 return dev_set_mac_address(port_dev, &addr);
71 static int team_port_set_orig_dev_addr(struct team_port *port)
73 return __set_port_dev_addr(port->dev, port->orig.dev_addr);
76 static int team_port_set_team_dev_addr(struct team *team,
77 struct team_port *port)
79 return __set_port_dev_addr(port->dev, team->dev->dev_addr);
82 int team_modeop_port_enter(struct team *team, struct team_port *port)
84 return team_port_set_team_dev_addr(team, port);
86 EXPORT_SYMBOL(team_modeop_port_enter);
88 void team_modeop_port_change_dev_addr(struct team *team,
89 struct team_port *port)
91 team_port_set_team_dev_addr(team, port);
93 EXPORT_SYMBOL(team_modeop_port_change_dev_addr);
95 static void team_refresh_port_linkup(struct team_port *port)
97 port->linkup = port->user.linkup_enabled ? port->user.linkup :
106 struct team_option_inst { /* One for each option instance */
107 struct list_head list;
108 struct list_head tmp_list;
109 struct team_option *option;
110 struct team_option_inst_info info;
115 static struct team_option *__team_find_option(struct team *team,
116 const char *opt_name)
118 struct team_option *option;
120 list_for_each_entry(option, &team->option_list, list) {
121 if (strcmp(option->name, opt_name) == 0)
127 static void __team_option_inst_del(struct team_option_inst *opt_inst)
129 list_del(&opt_inst->list);
133 static void __team_option_inst_del_option(struct team *team,
134 struct team_option *option)
136 struct team_option_inst *opt_inst, *tmp;
138 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
139 if (opt_inst->option == option)
140 __team_option_inst_del(opt_inst);
144 static int __team_option_inst_add(struct team *team, struct team_option *option,
145 struct team_port *port)
147 struct team_option_inst *opt_inst;
148 unsigned int array_size;
152 array_size = option->array_size;
154 array_size = 1; /* No array but still need one instance */
156 for (i = 0; i < array_size; i++) {
157 opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL);
160 opt_inst->option = option;
161 opt_inst->info.port = port;
162 opt_inst->info.array_index = i;
163 opt_inst->changed = true;
164 opt_inst->removed = false;
165 list_add_tail(&opt_inst->list, &team->option_inst_list);
167 err = option->init(team, &opt_inst->info);
176 static int __team_option_inst_add_option(struct team *team,
177 struct team_option *option)
179 struct team_port *port;
182 if (!option->per_port) {
183 err = __team_option_inst_add(team, option, NULL);
185 goto inst_del_option;
188 list_for_each_entry(port, &team->port_list, list) {
189 err = __team_option_inst_add(team, option, port);
191 goto inst_del_option;
196 __team_option_inst_del_option(team, option);
200 static void __team_option_inst_mark_removed_option(struct team *team,
201 struct team_option *option)
203 struct team_option_inst *opt_inst;
205 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
206 if (opt_inst->option == option) {
207 opt_inst->changed = true;
208 opt_inst->removed = true;
213 static void __team_option_inst_del_port(struct team *team,
214 struct team_port *port)
216 struct team_option_inst *opt_inst, *tmp;
218 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
219 if (opt_inst->option->per_port &&
220 opt_inst->info.port == port)
221 __team_option_inst_del(opt_inst);
225 static int __team_option_inst_add_port(struct team *team,
226 struct team_port *port)
228 struct team_option *option;
231 list_for_each_entry(option, &team->option_list, list) {
232 if (!option->per_port)
234 err = __team_option_inst_add(team, option, port);
241 __team_option_inst_del_port(team, port);
245 static void __team_option_inst_mark_removed_port(struct team *team,
246 struct team_port *port)
248 struct team_option_inst *opt_inst;
250 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
251 if (opt_inst->info.port == port) {
252 opt_inst->changed = true;
253 opt_inst->removed = true;
258 static int __team_options_register(struct team *team,
259 const struct team_option *option,
263 struct team_option **dst_opts;
266 dst_opts = kzalloc(sizeof(struct team_option *) * option_count,
270 for (i = 0; i < option_count; i++, option++) {
271 if (__team_find_option(team, option->name)) {
275 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL);
282 for (i = 0; i < option_count; i++) {
283 err = __team_option_inst_add_option(team, dst_opts[i]);
286 list_add_tail(&dst_opts[i]->list, &team->option_list);
293 for (i--; i >= 0; i--)
294 __team_option_inst_del_option(team, dst_opts[i]);
296 i = option_count - 1;
298 for (i--; i >= 0; i--)
305 static void __team_options_mark_removed(struct team *team,
306 const struct team_option *option,
311 for (i = 0; i < option_count; i++, option++) {
312 struct team_option *del_opt;
314 del_opt = __team_find_option(team, option->name);
316 __team_option_inst_mark_removed_option(team, del_opt);
320 static void __team_options_unregister(struct team *team,
321 const struct team_option *option,
326 for (i = 0; i < option_count; i++, option++) {
327 struct team_option *del_opt;
329 del_opt = __team_find_option(team, option->name);
331 __team_option_inst_del_option(team, del_opt);
332 list_del(&del_opt->list);
338 static void __team_options_change_check(struct team *team);
340 int team_options_register(struct team *team,
341 const struct team_option *option,
346 err = __team_options_register(team, option, option_count);
349 __team_options_change_check(team);
352 EXPORT_SYMBOL(team_options_register);
354 void team_options_unregister(struct team *team,
355 const struct team_option *option,
358 __team_options_mark_removed(team, option, option_count);
359 __team_options_change_check(team);
360 __team_options_unregister(team, option, option_count);
362 EXPORT_SYMBOL(team_options_unregister);
364 static int team_option_get(struct team *team,
365 struct team_option_inst *opt_inst,
366 struct team_gsetter_ctx *ctx)
368 if (!opt_inst->option->getter)
370 return opt_inst->option->getter(team, ctx);
373 static int team_option_set(struct team *team,
374 struct team_option_inst *opt_inst,
375 struct team_gsetter_ctx *ctx)
377 if (!opt_inst->option->setter)
379 return opt_inst->option->setter(team, ctx);
382 void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info)
384 struct team_option_inst *opt_inst;
386 opt_inst = container_of(opt_inst_info, struct team_option_inst, info);
387 opt_inst->changed = true;
389 EXPORT_SYMBOL(team_option_inst_set_change);
391 void team_options_change_check(struct team *team)
393 __team_options_change_check(team);
395 EXPORT_SYMBOL(team_options_change_check);
402 static LIST_HEAD(mode_list);
403 static DEFINE_SPINLOCK(mode_list_lock);
405 struct team_mode_item {
406 struct list_head list;
407 const struct team_mode *mode;
410 static struct team_mode_item *__find_mode(const char *kind)
412 struct team_mode_item *mitem;
414 list_for_each_entry(mitem, &mode_list, list) {
415 if (strcmp(mitem->mode->kind, kind) == 0)
421 static bool is_good_mode_name(const char *name)
423 while (*name != '\0') {
424 if (!isalpha(*name) && !isdigit(*name) && *name != '_')
431 int team_mode_register(const struct team_mode *mode)
434 struct team_mode_item *mitem;
436 if (!is_good_mode_name(mode->kind) ||
437 mode->priv_size > TEAM_MODE_PRIV_SIZE)
440 mitem = kmalloc(sizeof(*mitem), GFP_KERNEL);
444 spin_lock(&mode_list_lock);
445 if (__find_mode(mode->kind)) {
451 list_add_tail(&mitem->list, &mode_list);
453 spin_unlock(&mode_list_lock);
456 EXPORT_SYMBOL(team_mode_register);
458 void team_mode_unregister(const struct team_mode *mode)
460 struct team_mode_item *mitem;
462 spin_lock(&mode_list_lock);
463 mitem = __find_mode(mode->kind);
465 list_del_init(&mitem->list);
468 spin_unlock(&mode_list_lock);
470 EXPORT_SYMBOL(team_mode_unregister);
472 static const struct team_mode *team_mode_get(const char *kind)
474 struct team_mode_item *mitem;
475 const struct team_mode *mode = NULL;
477 spin_lock(&mode_list_lock);
478 mitem = __find_mode(kind);
480 spin_unlock(&mode_list_lock);
481 request_module("team-mode-%s", kind);
482 spin_lock(&mode_list_lock);
483 mitem = __find_mode(kind);
487 if (!try_module_get(mode->owner))
491 spin_unlock(&mode_list_lock);
495 static void team_mode_put(const struct team_mode *mode)
497 module_put(mode->owner);
500 static bool team_dummy_transmit(struct team *team, struct sk_buff *skb)
502 dev_kfree_skb_any(skb);
506 static rx_handler_result_t team_dummy_receive(struct team *team,
507 struct team_port *port,
510 return RX_HANDLER_ANOTHER;
513 static const struct team_mode __team_no_mode = {
517 static bool team_is_mode_set(struct team *team)
519 return team->mode != &__team_no_mode;
522 static void team_set_no_mode(struct team *team)
524 team->user_carrier_enabled = false;
525 team->mode = &__team_no_mode;
528 static void __team_adjust_ops(struct team *team, int en_port_count)
531 * To avoid checks in rx/tx skb paths, ensure here that non-null and
532 * correct ops are always set.
535 if (!en_port_count || !team_is_mode_set(team) ||
536 !team->mode->ops->transmit)
537 team->ops.transmit = team_dummy_transmit;
539 team->ops.transmit = team->mode->ops->transmit;
541 if (!en_port_count || !team_is_mode_set(team) ||
542 !team->mode->ops->receive)
543 team->ops.receive = team_dummy_receive;
545 team->ops.receive = team->mode->ops->receive;
548 static void team_adjust_ops(struct team *team)
550 __team_adjust_ops(team, team->en_port_count);
554 * We can benefit from the fact that it's ensured no port is present
555 * at the time of mode change. Therefore no packets are in fly so there's no
556 * need to set mode operations in any special way.
558 static int __team_change_mode(struct team *team,
559 const struct team_mode *new_mode)
561 /* Check if mode was previously set and do cleanup if so */
562 if (team_is_mode_set(team)) {
563 void (*exit_op)(struct team *team) = team->ops.exit;
565 /* Clear ops area so no callback is called any longer */
566 memset(&team->ops, 0, sizeof(struct team_mode_ops));
567 team_adjust_ops(team);
571 team_mode_put(team->mode);
572 team_set_no_mode(team);
573 /* zero private data area */
574 memset(&team->mode_priv, 0,
575 sizeof(struct team) - offsetof(struct team, mode_priv));
581 if (new_mode->ops->init) {
584 err = new_mode->ops->init(team);
589 team->mode = new_mode;
590 memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops));
591 team_adjust_ops(team);
596 static int team_change_mode(struct team *team, const char *kind)
598 const struct team_mode *new_mode;
599 struct net_device *dev = team->dev;
602 if (!list_empty(&team->port_list)) {
603 netdev_err(dev, "No ports can be present during mode change\n");
607 if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) {
608 netdev_err(dev, "Unable to change to the same mode the team is in\n");
612 new_mode = team_mode_get(kind);
614 netdev_err(dev, "Mode \"%s\" not found\n", kind);
618 err = __team_change_mode(team, new_mode);
620 netdev_err(dev, "Failed to change to mode \"%s\"\n", kind);
621 team_mode_put(new_mode);
625 netdev_info(dev, "Mode changed to \"%s\"\n", kind);
630 /************************
631 * Rx path frame handler
632 ************************/
634 /* note: already called with rcu_read_lock */
635 static rx_handler_result_t team_handle_frame(struct sk_buff **pskb)
637 struct sk_buff *skb = *pskb;
638 struct team_port *port;
640 rx_handler_result_t res;
642 skb = skb_share_check(skb, GFP_ATOMIC);
644 return RX_HANDLER_CONSUMED;
648 port = team_port_get_rcu(skb->dev);
650 if (!team_port_enabled(port)) {
651 /* allow exact match delivery for disabled ports */
652 res = RX_HANDLER_EXACT;
654 res = team->ops.receive(team, port, skb);
656 if (res == RX_HANDLER_ANOTHER) {
657 struct team_pcpu_stats *pcpu_stats;
659 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
660 u64_stats_update_begin(&pcpu_stats->syncp);
661 pcpu_stats->rx_packets++;
662 pcpu_stats->rx_bytes += skb->len;
663 if (skb->pkt_type == PACKET_MULTICAST)
664 pcpu_stats->rx_multicast++;
665 u64_stats_update_end(&pcpu_stats->syncp);
667 skb->dev = team->dev;
669 this_cpu_inc(team->pcpu_stats->rx_dropped);
676 /*************************************
677 * Multiqueue Tx port select override
678 *************************************/
680 static int team_queue_override_init(struct team *team)
682 struct list_head *listarr;
683 unsigned int queue_cnt = team->dev->num_tx_queues - 1;
688 listarr = kmalloc(sizeof(struct list_head) * queue_cnt, GFP_KERNEL);
691 team->qom_lists = listarr;
692 for (i = 0; i < queue_cnt; i++)
693 INIT_LIST_HEAD(listarr++);
697 static void team_queue_override_fini(struct team *team)
699 kfree(team->qom_lists);
702 static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id)
704 return &team->qom_lists[queue_id - 1];
708 * note: already called with rcu_read_lock
710 static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb)
712 struct list_head *qom_list;
713 struct team_port *port;
715 if (!team->queue_override_enabled || !skb->queue_mapping)
717 qom_list = __team_get_qom_list(team, skb->queue_mapping);
718 list_for_each_entry_rcu(port, qom_list, qom_list) {
719 if (!team_dev_queue_xmit(team, port, skb))
725 static void __team_queue_override_port_del(struct team *team,
726 struct team_port *port)
730 list_del_rcu(&port->qom_list);
733 static bool team_queue_override_port_has_gt_prio_than(struct team_port *port,
734 struct team_port *cur)
736 if (port->priority < cur->priority)
738 if (port->priority > cur->priority)
740 if (port->index < cur->index)
745 static void __team_queue_override_port_add(struct team *team,
746 struct team_port *port)
748 struct team_port *cur;
749 struct list_head *qom_list;
750 struct list_head *node;
754 qom_list = __team_get_qom_list(team, port->queue_id);
756 list_for_each_entry(cur, qom_list, qom_list) {
757 if (team_queue_override_port_has_gt_prio_than(port, cur))
759 node = &cur->qom_list;
761 list_add_tail_rcu(&port->qom_list, node);
764 static void __team_queue_override_enabled_check(struct team *team)
766 struct team_port *port;
767 bool enabled = false;
769 list_for_each_entry(port, &team->port_list, list) {
770 if (port->queue_id) {
775 if (enabled == team->queue_override_enabled)
777 netdev_dbg(team->dev, "%s queue override\n",
778 enabled ? "Enabling" : "Disabling");
779 team->queue_override_enabled = enabled;
782 static void team_queue_override_port_prio_changed(struct team *team,
783 struct team_port *port)
785 if (!port->queue_id || team_port_enabled(port))
787 __team_queue_override_port_del(team, port);
788 __team_queue_override_port_add(team, port);
789 __team_queue_override_enabled_check(team);
792 static void team_queue_override_port_change_queue_id(struct team *team,
793 struct team_port *port,
796 if (team_port_enabled(port)) {
797 __team_queue_override_port_del(team, port);
798 port->queue_id = new_queue_id;
799 __team_queue_override_port_add(team, port);
800 __team_queue_override_enabled_check(team);
802 port->queue_id = new_queue_id;
806 static void team_queue_override_port_add(struct team *team,
807 struct team_port *port)
809 __team_queue_override_port_add(team, port);
810 __team_queue_override_enabled_check(team);
813 static void team_queue_override_port_del(struct team *team,
814 struct team_port *port)
816 __team_queue_override_port_del(team, port);
817 __team_queue_override_enabled_check(team);
825 static bool team_port_find(const struct team *team,
826 const struct team_port *port)
828 struct team_port *cur;
830 list_for_each_entry(cur, &team->port_list, list)
837 * Enable/disable port by adding to enabled port hashlist and setting
838 * port->index (Might be racy so reader could see incorrect ifindex when
839 * processing a flying packet, but that is not a problem). Write guarded
842 static void team_port_enable(struct team *team,
843 struct team_port *port)
845 if (team_port_enabled(port))
847 port->index = team->en_port_count++;
848 hlist_add_head_rcu(&port->hlist,
849 team_port_index_hash(team, port->index));
850 team_adjust_ops(team);
851 team_queue_override_port_add(team, port);
852 if (team->ops.port_enabled)
853 team->ops.port_enabled(team, port);
856 static void __reconstruct_port_hlist(struct team *team, int rm_index)
859 struct team_port *port;
861 for (i = rm_index + 1; i < team->en_port_count; i++) {
862 port = team_get_port_by_index(team, i);
863 hlist_del_rcu(&port->hlist);
865 hlist_add_head_rcu(&port->hlist,
866 team_port_index_hash(team, port->index));
870 static void team_port_disable(struct team *team,
871 struct team_port *port)
873 if (!team_port_enabled(port))
875 if (team->ops.port_disabled)
876 team->ops.port_disabled(team, port);
877 hlist_del_rcu(&port->hlist);
878 __reconstruct_port_hlist(team, port->index);
880 team_queue_override_port_del(team, port);
881 __team_adjust_ops(team, team->en_port_count - 1);
883 * Wait until readers see adjusted ops. This ensures that
884 * readers never see team->en_port_count == 0
887 team->en_port_count--;
890 #define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \
891 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
892 NETIF_F_HIGHDMA | NETIF_F_LRO)
894 static void __team_compute_features(struct team *team)
896 struct team_port *port;
897 u32 vlan_features = TEAM_VLAN_FEATURES;
898 unsigned short max_hard_header_len = ETH_HLEN;
899 unsigned int flags, dst_release_flag = IFF_XMIT_DST_RELEASE;
901 list_for_each_entry(port, &team->port_list, list) {
902 vlan_features = netdev_increment_features(vlan_features,
903 port->dev->vlan_features,
906 dst_release_flag &= port->dev->priv_flags;
907 if (port->dev->hard_header_len > max_hard_header_len)
908 max_hard_header_len = port->dev->hard_header_len;
911 team->dev->vlan_features = vlan_features;
912 team->dev->hard_header_len = max_hard_header_len;
914 flags = team->dev->priv_flags & ~IFF_XMIT_DST_RELEASE;
915 team->dev->priv_flags = flags | dst_release_flag;
917 netdev_change_features(team->dev);
920 static void team_compute_features(struct team *team)
922 mutex_lock(&team->lock);
923 __team_compute_features(team);
924 mutex_unlock(&team->lock);
927 static int team_port_enter(struct team *team, struct team_port *port)
932 port->dev->priv_flags |= IFF_TEAM_PORT;
933 if (team->ops.port_enter) {
934 err = team->ops.port_enter(team, port);
936 netdev_err(team->dev, "Device %s failed to enter team mode\n",
945 port->dev->priv_flags &= ~IFF_TEAM_PORT;
951 static void team_port_leave(struct team *team, struct team_port *port)
953 if (team->ops.port_leave)
954 team->ops.port_leave(team, port);
955 port->dev->priv_flags &= ~IFF_TEAM_PORT;
959 #ifdef CONFIG_NET_POLL_CONTROLLER
960 static int team_port_enable_netpoll(struct team *team, struct team_port *port,
966 np = kzalloc(sizeof(*np), gfp);
970 err = __netpoll_setup(np, port->dev, gfp);
979 static void team_port_disable_netpoll(struct team_port *port)
981 struct netpoll *np = port->np;
987 /* Wait for transmitting packets to finish before freeing. */
988 synchronize_rcu_bh();
989 __netpoll_cleanup(np);
993 static struct netpoll_info *team_netpoll_info(struct team *team)
995 return team->dev->npinfo;
999 static int team_port_enable_netpoll(struct team *team, struct team_port *port,
1004 static void team_port_disable_netpoll(struct team_port *port)
1007 static struct netpoll_info *team_netpoll_info(struct team *team)
1013 static void __team_port_change_port_added(struct team_port *port, bool linkup);
1014 static int team_dev_type_check_change(struct net_device *dev,
1015 struct net_device *port_dev);
1017 static int team_port_add(struct team *team, struct net_device *port_dev)
1019 struct net_device *dev = team->dev;
1020 struct team_port *port;
1021 char *portname = port_dev->name;
1024 if (port_dev->flags & IFF_LOOPBACK) {
1025 netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n",
1030 if (team_port_exists(port_dev)) {
1031 netdev_err(dev, "Device %s is already a port "
1032 "of a team device\n", portname);
1036 if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
1037 vlan_uses_dev(dev)) {
1038 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
1043 err = team_dev_type_check_change(dev, port_dev);
1047 if (port_dev->flags & IFF_UP) {
1048 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
1053 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size,
1058 port->dev = port_dev;
1060 INIT_LIST_HEAD(&port->qom_list);
1062 port->orig.mtu = port_dev->mtu;
1063 err = dev_set_mtu(port_dev, dev->mtu);
1065 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
1069 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len);
1071 err = team_port_enter(team, port);
1073 netdev_err(dev, "Device %s failed to enter team mode\n",
1075 goto err_port_enter;
1078 err = dev_open(port_dev);
1080 netdev_dbg(dev, "Device %s opening failed\n",
1085 err = vlan_vids_add_by_dev(port_dev, dev);
1087 netdev_err(dev, "Failed to add vlan ids to device %s\n",
1092 if (team_netpoll_info(team)) {
1093 err = team_port_enable_netpoll(team, port, GFP_KERNEL);
1095 netdev_err(dev, "Failed to enable netpoll on device %s\n",
1097 goto err_enable_netpoll;
1101 err = netdev_master_upper_dev_link(port_dev, dev);
1103 netdev_err(dev, "Device %s failed to set upper link\n",
1105 goto err_set_upper_link;
1108 err = netdev_rx_handler_register(port_dev, team_handle_frame,
1111 netdev_err(dev, "Device %s failed to register rx_handler\n",
1113 goto err_handler_register;
1116 err = __team_option_inst_add_port(team, port);
1118 netdev_err(dev, "Device %s failed to add per-port options\n",
1120 goto err_option_port_add;
1124 team_port_enable(team, port);
1125 list_add_tail_rcu(&port->list, &team->port_list);
1126 __team_compute_features(team);
1127 __team_port_change_port_added(port, !!netif_carrier_ok(port_dev));
1128 __team_options_change_check(team);
1130 netdev_info(dev, "Port device %s added\n", portname);
1134 err_option_port_add:
1135 netdev_rx_handler_unregister(port_dev);
1137 err_handler_register:
1138 netdev_upper_dev_unlink(port_dev, dev);
1141 team_port_disable_netpoll(port);
1144 vlan_vids_del_by_dev(port_dev, dev);
1147 dev_close(port_dev);
1150 team_port_leave(team, port);
1151 team_port_set_orig_dev_addr(port);
1154 dev_set_mtu(port_dev, port->orig.mtu);
1162 static void __team_port_change_port_removed(struct team_port *port);
1164 static int team_port_del(struct team *team, struct net_device *port_dev)
1166 struct net_device *dev = team->dev;
1167 struct team_port *port;
1168 char *portname = port_dev->name;
1170 port = team_port_get_rtnl(port_dev);
1171 if (!port || !team_port_find(team, port)) {
1172 netdev_err(dev, "Device %s does not act as a port of this team\n",
1177 team_port_disable(team, port);
1178 list_del_rcu(&port->list);
1179 netdev_rx_handler_unregister(port_dev);
1180 netdev_upper_dev_unlink(port_dev, dev);
1181 team_port_disable_netpoll(port);
1182 vlan_vids_del_by_dev(port_dev, dev);
1183 dev_uc_unsync(port_dev, dev);
1184 dev_mc_unsync(port_dev, dev);
1185 dev_close(port_dev);
1186 team_port_leave(team, port);
1188 __team_option_inst_mark_removed_port(team, port);
1189 __team_options_change_check(team);
1190 __team_option_inst_del_port(team, port);
1191 __team_port_change_port_removed(port);
1193 team_port_set_orig_dev_addr(port);
1194 dev_set_mtu(port_dev, port->orig.mtu);
1197 netdev_info(dev, "Port device %s removed\n", portname);
1198 __team_compute_features(team);
1208 static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
1210 ctx->data.str_val = team->mode->kind;
1214 static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
1216 return team_change_mode(team, ctx->data.str_val);
1219 static int team_port_en_option_get(struct team *team,
1220 struct team_gsetter_ctx *ctx)
1222 struct team_port *port = ctx->info->port;
1224 ctx->data.bool_val = team_port_enabled(port);
1228 static int team_port_en_option_set(struct team *team,
1229 struct team_gsetter_ctx *ctx)
1231 struct team_port *port = ctx->info->port;
1233 if (ctx->data.bool_val)
1234 team_port_enable(team, port);
1236 team_port_disable(team, port);
1240 static int team_user_linkup_option_get(struct team *team,
1241 struct team_gsetter_ctx *ctx)
1243 struct team_port *port = ctx->info->port;
1245 ctx->data.bool_val = port->user.linkup;
1249 static int team_user_linkup_option_set(struct team *team,
1250 struct team_gsetter_ctx *ctx)
1252 struct team_port *port = ctx->info->port;
1254 port->user.linkup = ctx->data.bool_val;
1255 team_refresh_port_linkup(port);
1259 static int team_user_linkup_en_option_get(struct team *team,
1260 struct team_gsetter_ctx *ctx)
1262 struct team_port *port = ctx->info->port;
1264 ctx->data.bool_val = port->user.linkup_enabled;
1268 static int team_user_linkup_en_option_set(struct team *team,
1269 struct team_gsetter_ctx *ctx)
1271 struct team_port *port = ctx->info->port;
1273 port->user.linkup_enabled = ctx->data.bool_val;
1274 team_refresh_port_linkup(port);
1278 static int team_priority_option_get(struct team *team,
1279 struct team_gsetter_ctx *ctx)
1281 struct team_port *port = ctx->info->port;
1283 ctx->data.s32_val = port->priority;
1287 static int team_priority_option_set(struct team *team,
1288 struct team_gsetter_ctx *ctx)
1290 struct team_port *port = ctx->info->port;
1291 s32 priority = ctx->data.s32_val;
1293 if (port->priority == priority)
1295 port->priority = priority;
1296 team_queue_override_port_prio_changed(team, port);
1300 static int team_queue_id_option_get(struct team *team,
1301 struct team_gsetter_ctx *ctx)
1303 struct team_port *port = ctx->info->port;
1305 ctx->data.u32_val = port->queue_id;
1309 static int team_queue_id_option_set(struct team *team,
1310 struct team_gsetter_ctx *ctx)
1312 struct team_port *port = ctx->info->port;
1313 u16 new_queue_id = ctx->data.u32_val;
1315 if (port->queue_id == new_queue_id)
1317 if (new_queue_id >= team->dev->real_num_tx_queues)
1319 team_queue_override_port_change_queue_id(team, port, new_queue_id);
1323 static const struct team_option team_options[] = {
1326 .type = TEAM_OPTION_TYPE_STRING,
1327 .getter = team_mode_option_get,
1328 .setter = team_mode_option_set,
1332 .type = TEAM_OPTION_TYPE_BOOL,
1334 .getter = team_port_en_option_get,
1335 .setter = team_port_en_option_set,
1338 .name = "user_linkup",
1339 .type = TEAM_OPTION_TYPE_BOOL,
1341 .getter = team_user_linkup_option_get,
1342 .setter = team_user_linkup_option_set,
1345 .name = "user_linkup_enabled",
1346 .type = TEAM_OPTION_TYPE_BOOL,
1348 .getter = team_user_linkup_en_option_get,
1349 .setter = team_user_linkup_en_option_set,
1353 .type = TEAM_OPTION_TYPE_S32,
1355 .getter = team_priority_option_get,
1356 .setter = team_priority_option_set,
1360 .type = TEAM_OPTION_TYPE_U32,
1362 .getter = team_queue_id_option_get,
1363 .setter = team_queue_id_option_set,
1367 static struct lock_class_key team_netdev_xmit_lock_key;
1368 static struct lock_class_key team_netdev_addr_lock_key;
1369 static struct lock_class_key team_tx_busylock_key;
1371 static void team_set_lockdep_class_one(struct net_device *dev,
1372 struct netdev_queue *txq,
1375 lockdep_set_class(&txq->_xmit_lock, &team_netdev_xmit_lock_key);
1378 static void team_set_lockdep_class(struct net_device *dev)
1380 lockdep_set_class(&dev->addr_list_lock, &team_netdev_addr_lock_key);
1381 netdev_for_each_tx_queue(dev, team_set_lockdep_class_one, NULL);
1382 dev->qdisc_tx_busylock = &team_tx_busylock_key;
1385 static int team_init(struct net_device *dev)
1387 struct team *team = netdev_priv(dev);
1392 mutex_init(&team->lock);
1393 team_set_no_mode(team);
1395 team->pcpu_stats = alloc_percpu(struct team_pcpu_stats);
1396 if (!team->pcpu_stats)
1399 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
1400 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
1401 INIT_LIST_HEAD(&team->port_list);
1402 err = team_queue_override_init(team);
1404 goto err_team_queue_override_init;
1406 team_adjust_ops(team);
1408 INIT_LIST_HEAD(&team->option_list);
1409 INIT_LIST_HEAD(&team->option_inst_list);
1410 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1412 goto err_options_register;
1413 netif_carrier_off(dev);
1415 team_set_lockdep_class(dev);
1419 err_options_register:
1420 team_queue_override_fini(team);
1421 err_team_queue_override_init:
1422 free_percpu(team->pcpu_stats);
1427 static void team_uninit(struct net_device *dev)
1429 struct team *team = netdev_priv(dev);
1430 struct team_port *port;
1431 struct team_port *tmp;
1433 mutex_lock(&team->lock);
1434 list_for_each_entry_safe(port, tmp, &team->port_list, list)
1435 team_port_del(team, port->dev);
1437 __team_change_mode(team, NULL); /* cleanup */
1438 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
1439 team_queue_override_fini(team);
1440 mutex_unlock(&team->lock);
1443 static void team_destructor(struct net_device *dev)
1445 struct team *team = netdev_priv(dev);
1447 free_percpu(team->pcpu_stats);
1451 static int team_open(struct net_device *dev)
1456 static int team_close(struct net_device *dev)
1462 * note: already called with rcu_read_lock
1464 static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1466 struct team *team = netdev_priv(dev);
1468 unsigned int len = skb->len;
1470 tx_success = team_queue_override_transmit(team, skb);
1472 tx_success = team->ops.transmit(team, skb);
1474 struct team_pcpu_stats *pcpu_stats;
1476 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1477 u64_stats_update_begin(&pcpu_stats->syncp);
1478 pcpu_stats->tx_packets++;
1479 pcpu_stats->tx_bytes += len;
1480 u64_stats_update_end(&pcpu_stats->syncp);
1482 this_cpu_inc(team->pcpu_stats->tx_dropped);
1485 return NETDEV_TX_OK;
1488 static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb)
1491 * This helper function exists to help dev_pick_tx get the correct
1492 * destination queue. Using a helper function skips a call to
1493 * skb_tx_hash and will put the skbs in the queue we expect on their
1494 * way down to the team driver.
1496 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1499 * Save the original txq to restore before passing to the driver
1501 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1503 if (unlikely(txq >= dev->real_num_tx_queues)) {
1505 txq -= dev->real_num_tx_queues;
1506 } while (txq >= dev->real_num_tx_queues);
1511 static void team_change_rx_flags(struct net_device *dev, int change)
1513 struct team *team = netdev_priv(dev);
1514 struct team_port *port;
1518 list_for_each_entry_rcu(port, &team->port_list, list) {
1519 if (change & IFF_PROMISC) {
1520 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1521 dev_set_promiscuity(port->dev, inc);
1523 if (change & IFF_ALLMULTI) {
1524 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1525 dev_set_allmulti(port->dev, inc);
1531 static void team_set_rx_mode(struct net_device *dev)
1533 struct team *team = netdev_priv(dev);
1534 struct team_port *port;
1537 list_for_each_entry_rcu(port, &team->port_list, list) {
1538 dev_uc_sync_multiple(port->dev, dev);
1539 dev_mc_sync_multiple(port->dev, dev);
1544 static int team_set_mac_address(struct net_device *dev, void *p)
1546 struct sockaddr *addr = p;
1547 struct team *team = netdev_priv(dev);
1548 struct team_port *port;
1550 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data))
1551 return -EADDRNOTAVAIL;
1552 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1554 list_for_each_entry_rcu(port, &team->port_list, list)
1555 if (team->ops.port_change_dev_addr)
1556 team->ops.port_change_dev_addr(team, port);
1561 static int team_change_mtu(struct net_device *dev, int new_mtu)
1563 struct team *team = netdev_priv(dev);
1564 struct team_port *port;
1568 * Alhough this is reader, it's guarded by team lock. It's not possible
1569 * to traverse list in reverse under rcu_read_lock
1571 mutex_lock(&team->lock);
1572 list_for_each_entry(port, &team->port_list, list) {
1573 err = dev_set_mtu(port->dev, new_mtu);
1575 netdev_err(dev, "Device %s failed to change mtu",
1580 mutex_unlock(&team->lock);
1587 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1588 dev_set_mtu(port->dev, dev->mtu);
1589 mutex_unlock(&team->lock);
1594 static struct rtnl_link_stats64 *
1595 team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1597 struct team *team = netdev_priv(dev);
1598 struct team_pcpu_stats *p;
1599 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1600 u32 rx_dropped = 0, tx_dropped = 0;
1604 for_each_possible_cpu(i) {
1605 p = per_cpu_ptr(team->pcpu_stats, i);
1607 start = u64_stats_fetch_begin_bh(&p->syncp);
1608 rx_packets = p->rx_packets;
1609 rx_bytes = p->rx_bytes;
1610 rx_multicast = p->rx_multicast;
1611 tx_packets = p->tx_packets;
1612 tx_bytes = p->tx_bytes;
1613 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
1615 stats->rx_packets += rx_packets;
1616 stats->rx_bytes += rx_bytes;
1617 stats->multicast += rx_multicast;
1618 stats->tx_packets += tx_packets;
1619 stats->tx_bytes += tx_bytes;
1621 * rx_dropped & tx_dropped are u32, updated
1622 * without syncp protection.
1624 rx_dropped += p->rx_dropped;
1625 tx_dropped += p->tx_dropped;
1627 stats->rx_dropped = rx_dropped;
1628 stats->tx_dropped = tx_dropped;
1632 static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
1634 struct team *team = netdev_priv(dev);
1635 struct team_port *port;
1639 * Alhough this is reader, it's guarded by team lock. It's not possible
1640 * to traverse list in reverse under rcu_read_lock
1642 mutex_lock(&team->lock);
1643 list_for_each_entry(port, &team->port_list, list) {
1644 err = vlan_vid_add(port->dev, proto, vid);
1648 mutex_unlock(&team->lock);
1653 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1654 vlan_vid_del(port->dev, proto, vid);
1655 mutex_unlock(&team->lock);
1660 static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
1662 struct team *team = netdev_priv(dev);
1663 struct team_port *port;
1666 list_for_each_entry_rcu(port, &team->port_list, list)
1667 vlan_vid_del(port->dev, proto, vid);
1673 #ifdef CONFIG_NET_POLL_CONTROLLER
1674 static void team_poll_controller(struct net_device *dev)
1678 static void __team_netpoll_cleanup(struct team *team)
1680 struct team_port *port;
1682 list_for_each_entry(port, &team->port_list, list)
1683 team_port_disable_netpoll(port);
1686 static void team_netpoll_cleanup(struct net_device *dev)
1688 struct team *team = netdev_priv(dev);
1690 mutex_lock(&team->lock);
1691 __team_netpoll_cleanup(team);
1692 mutex_unlock(&team->lock);
1695 static int team_netpoll_setup(struct net_device *dev,
1696 struct netpoll_info *npifo, gfp_t gfp)
1698 struct team *team = netdev_priv(dev);
1699 struct team_port *port;
1702 mutex_lock(&team->lock);
1703 list_for_each_entry(port, &team->port_list, list) {
1704 err = team_port_enable_netpoll(team, port, gfp);
1706 __team_netpoll_cleanup(team);
1710 mutex_unlock(&team->lock);
1715 static int team_add_slave(struct net_device *dev, struct net_device *port_dev)
1717 struct team *team = netdev_priv(dev);
1720 mutex_lock(&team->lock);
1721 err = team_port_add(team, port_dev);
1722 mutex_unlock(&team->lock);
1726 static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1728 struct team *team = netdev_priv(dev);
1731 mutex_lock(&team->lock);
1732 err = team_port_del(team, port_dev);
1733 mutex_unlock(&team->lock);
1737 static netdev_features_t team_fix_features(struct net_device *dev,
1738 netdev_features_t features)
1740 struct team_port *port;
1741 struct team *team = netdev_priv(dev);
1742 netdev_features_t mask;
1745 features &= ~NETIF_F_ONE_FOR_ALL;
1746 features |= NETIF_F_ALL_FOR_ALL;
1749 list_for_each_entry_rcu(port, &team->port_list, list) {
1750 features = netdev_increment_features(features,
1751 port->dev->features,
1758 static int team_change_carrier(struct net_device *dev, bool new_carrier)
1760 struct team *team = netdev_priv(dev);
1762 team->user_carrier_enabled = true;
1765 netif_carrier_on(dev);
1767 netif_carrier_off(dev);
1771 static const struct net_device_ops team_netdev_ops = {
1772 .ndo_init = team_init,
1773 .ndo_uninit = team_uninit,
1774 .ndo_open = team_open,
1775 .ndo_stop = team_close,
1776 .ndo_start_xmit = team_xmit,
1777 .ndo_select_queue = team_select_queue,
1778 .ndo_change_rx_flags = team_change_rx_flags,
1779 .ndo_set_rx_mode = team_set_rx_mode,
1780 .ndo_set_mac_address = team_set_mac_address,
1781 .ndo_change_mtu = team_change_mtu,
1782 .ndo_get_stats64 = team_get_stats64,
1783 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
1784 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
1785 #ifdef CONFIG_NET_POLL_CONTROLLER
1786 .ndo_poll_controller = team_poll_controller,
1787 .ndo_netpoll_setup = team_netpoll_setup,
1788 .ndo_netpoll_cleanup = team_netpoll_cleanup,
1790 .ndo_add_slave = team_add_slave,
1791 .ndo_del_slave = team_del_slave,
1792 .ndo_fix_features = team_fix_features,
1793 .ndo_change_carrier = team_change_carrier,
1796 /***********************
1798 ***********************/
1800 static void team_ethtool_get_drvinfo(struct net_device *dev,
1801 struct ethtool_drvinfo *drvinfo)
1803 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
1804 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
1807 static const struct ethtool_ops team_ethtool_ops = {
1808 .get_drvinfo = team_ethtool_get_drvinfo,
1809 .get_link = ethtool_op_get_link,
1812 /***********************
1813 * rt netlink interface
1814 ***********************/
1816 static void team_setup_by_port(struct net_device *dev,
1817 struct net_device *port_dev)
1819 dev->header_ops = port_dev->header_ops;
1820 dev->type = port_dev->type;
1821 dev->hard_header_len = port_dev->hard_header_len;
1822 dev->addr_len = port_dev->addr_len;
1823 dev->mtu = port_dev->mtu;
1824 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
1825 memcpy(dev->dev_addr, port_dev->dev_addr, port_dev->addr_len);
1828 static int team_dev_type_check_change(struct net_device *dev,
1829 struct net_device *port_dev)
1831 struct team *team = netdev_priv(dev);
1832 char *portname = port_dev->name;
1835 if (dev->type == port_dev->type)
1837 if (!list_empty(&team->port_list)) {
1838 netdev_err(dev, "Device %s is of different type\n", portname);
1841 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev);
1842 err = notifier_to_errno(err);
1844 netdev_err(dev, "Refused to change device type\n");
1849 team_setup_by_port(dev, port_dev);
1850 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev);
1854 static void team_setup(struct net_device *dev)
1858 dev->netdev_ops = &team_netdev_ops;
1859 dev->ethtool_ops = &team_ethtool_ops;
1860 dev->destructor = team_destructor;
1861 dev->tx_queue_len = 0;
1862 dev->flags |= IFF_MULTICAST;
1863 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
1866 * Indicate we support unicast address filtering. That way core won't
1867 * bring us to promisc mode in case a unicast addr is added.
1868 * Let this up to underlay drivers.
1870 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
1872 dev->features |= NETIF_F_LLTX;
1873 dev->features |= NETIF_F_GRO;
1874 dev->hw_features = TEAM_VLAN_FEATURES |
1875 NETIF_F_HW_VLAN_CTAG_TX |
1876 NETIF_F_HW_VLAN_CTAG_RX |
1877 NETIF_F_HW_VLAN_CTAG_FILTER;
1879 dev->hw_features &= ~(NETIF_F_ALL_CSUM & ~NETIF_F_HW_CSUM);
1880 dev->features |= dev->hw_features;
1883 static int team_newlink(struct net *src_net, struct net_device *dev,
1884 struct nlattr *tb[], struct nlattr *data[])
1888 if (tb[IFLA_ADDRESS] == NULL)
1889 eth_hw_addr_random(dev);
1891 err = register_netdevice(dev);
1898 static int team_validate(struct nlattr *tb[], struct nlattr *data[])
1900 if (tb[IFLA_ADDRESS]) {
1901 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
1903 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
1904 return -EADDRNOTAVAIL;
1909 static unsigned int team_get_num_tx_queues(void)
1911 return TEAM_DEFAULT_NUM_TX_QUEUES;
1914 static unsigned int team_get_num_rx_queues(void)
1916 return TEAM_DEFAULT_NUM_RX_QUEUES;
1919 static struct rtnl_link_ops team_link_ops __read_mostly = {
1921 .priv_size = sizeof(struct team),
1922 .setup = team_setup,
1923 .newlink = team_newlink,
1924 .validate = team_validate,
1925 .get_num_tx_queues = team_get_num_tx_queues,
1926 .get_num_rx_queues = team_get_num_rx_queues,
1930 /***********************************
1931 * Generic netlink custom interface
1932 ***********************************/
1934 static struct genl_family team_nl_family = {
1935 .id = GENL_ID_GENERATE,
1936 .name = TEAM_GENL_NAME,
1937 .version = TEAM_GENL_VERSION,
1938 .maxattr = TEAM_ATTR_MAX,
1942 static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
1943 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
1944 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
1945 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
1946 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
1949 static const struct nla_policy
1950 team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
1951 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
1952 [TEAM_ATTR_OPTION_NAME] = {
1954 .len = TEAM_STRING_MAX_LEN,
1956 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
1957 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
1958 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
1961 static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
1963 struct sk_buff *msg;
1967 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1971 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
1972 &team_nl_family, 0, TEAM_CMD_NOOP);
1978 genlmsg_end(msg, hdr);
1980 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid);
1989 * Netlink cmd functions should be locked by following two functions.
1990 * Since dev gets held here, that ensures dev won't disappear in between.
1992 static struct team *team_nl_team_get(struct genl_info *info)
1994 struct net *net = genl_info_net(info);
1996 struct net_device *dev;
1999 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
2002 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
2003 dev = dev_get_by_index(net, ifindex);
2004 if (!dev || dev->netdev_ops != &team_netdev_ops) {
2010 team = netdev_priv(dev);
2011 mutex_lock(&team->lock);
2015 static void team_nl_team_put(struct team *team)
2017 mutex_unlock(&team->lock);
2021 typedef int team_nl_send_func_t(struct sk_buff *skb,
2022 struct team *team, u32 portid);
2024 static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid)
2026 return genlmsg_unicast(dev_net(team->dev), skb, portid);
2029 static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
2030 struct team_option_inst *opt_inst)
2032 struct nlattr *option_item;
2033 struct team_option *option = opt_inst->option;
2034 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
2035 struct team_gsetter_ctx ctx;
2038 ctx.info = opt_inst_info;
2039 err = team_option_get(team, opt_inst, &ctx);
2043 option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
2047 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
2049 if (opt_inst_info->port &&
2050 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
2051 opt_inst_info->port->dev->ifindex))
2053 if (opt_inst->option->array_size &&
2054 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
2055 opt_inst_info->array_index))
2058 switch (option->type) {
2059 case TEAM_OPTION_TYPE_U32:
2060 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
2062 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
2065 case TEAM_OPTION_TYPE_STRING:
2066 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
2068 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
2072 case TEAM_OPTION_TYPE_BINARY:
2073 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
2075 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
2076 ctx.data.bin_val.ptr))
2079 case TEAM_OPTION_TYPE_BOOL:
2080 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
2082 if (ctx.data.bool_val &&
2083 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
2086 case TEAM_OPTION_TYPE_S32:
2087 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32))
2089 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val))
2095 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
2097 if (opt_inst->changed) {
2098 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
2100 opt_inst->changed = false;
2102 nla_nest_end(skb, option_item);
2106 nla_nest_cancel(skb, option_item);
2110 static int __send_and_alloc_skb(struct sk_buff **pskb,
2111 struct team *team, u32 portid,
2112 team_nl_send_func_t *send_func)
2117 err = send_func(*pskb, team, portid);
2121 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2127 static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
2128 int flags, team_nl_send_func_t *send_func,
2129 struct list_head *sel_opt_inst_list)
2131 struct nlattr *option_list;
2132 struct nlmsghdr *nlh;
2134 struct team_option_inst *opt_inst;
2136 struct sk_buff *skb = NULL;
2140 opt_inst = list_first_entry(sel_opt_inst_list,
2141 struct team_option_inst, tmp_list);
2144 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2148 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2149 TEAM_CMD_OPTIONS_GET);
2153 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2154 goto nla_put_failure;
2155 option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION);
2157 goto nla_put_failure;
2161 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
2162 err = team_nl_fill_one_option_get(skb, team, opt_inst);
2164 if (err == -EMSGSIZE) {
2175 nla_nest_end(skb, option_list);
2176 genlmsg_end(skb, hdr);
2181 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2183 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2189 return send_func(skb, team, portid);
2194 genlmsg_cancel(skb, hdr);
2199 static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
2202 struct team_option_inst *opt_inst;
2204 LIST_HEAD(sel_opt_inst_list);
2206 team = team_nl_team_get(info);
2210 list_for_each_entry(opt_inst, &team->option_inst_list, list)
2211 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2212 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq,
2213 NLM_F_ACK, team_nl_send_unicast,
2214 &sel_opt_inst_list);
2216 team_nl_team_put(team);
2221 static int team_nl_send_event_options_get(struct team *team,
2222 struct list_head *sel_opt_inst_list);
2224 static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
2229 struct nlattr *nl_option;
2230 LIST_HEAD(opt_inst_list);
2232 team = team_nl_team_get(info);
2237 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
2242 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
2243 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
2244 struct nlattr *attr;
2245 struct nlattr *attr_data;
2246 enum team_option_type opt_type;
2247 int opt_port_ifindex = 0; /* != 0 for per-port options */
2248 u32 opt_array_index = 0;
2249 bool opt_is_array = false;
2250 struct team_option_inst *opt_inst;
2252 bool opt_found = false;
2254 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
2258 err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX,
2259 nl_option, team_nl_option_policy);
2262 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
2263 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
2267 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
2269 opt_type = TEAM_OPTION_TYPE_U32;
2272 opt_type = TEAM_OPTION_TYPE_STRING;
2275 opt_type = TEAM_OPTION_TYPE_BINARY;
2278 opt_type = TEAM_OPTION_TYPE_BOOL;
2281 opt_type = TEAM_OPTION_TYPE_S32;
2287 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
2288 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
2293 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
2294 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
2296 opt_port_ifindex = nla_get_u32(attr);
2298 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
2300 opt_is_array = true;
2301 opt_array_index = nla_get_u32(attr);
2304 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2305 struct team_option *option = opt_inst->option;
2306 struct team_gsetter_ctx ctx;
2307 struct team_option_inst_info *opt_inst_info;
2310 opt_inst_info = &opt_inst->info;
2311 tmp_ifindex = opt_inst_info->port ?
2312 opt_inst_info->port->dev->ifindex : 0;
2313 if (option->type != opt_type ||
2314 strcmp(option->name, opt_name) ||
2315 tmp_ifindex != opt_port_ifindex ||
2316 (option->array_size && !opt_is_array) ||
2317 opt_inst_info->array_index != opt_array_index)
2320 ctx.info = opt_inst_info;
2322 case TEAM_OPTION_TYPE_U32:
2323 ctx.data.u32_val = nla_get_u32(attr_data);
2325 case TEAM_OPTION_TYPE_STRING:
2326 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2330 ctx.data.str_val = nla_data(attr_data);
2332 case TEAM_OPTION_TYPE_BINARY:
2333 ctx.data.bin_val.len = nla_len(attr_data);
2334 ctx.data.bin_val.ptr = nla_data(attr_data);
2336 case TEAM_OPTION_TYPE_BOOL:
2337 ctx.data.bool_val = attr_data ? true : false;
2339 case TEAM_OPTION_TYPE_S32:
2340 ctx.data.s32_val = nla_get_s32(attr_data);
2345 err = team_option_set(team, opt_inst, &ctx);
2348 opt_inst->changed = true;
2349 list_add(&opt_inst->tmp_list, &opt_inst_list);
2357 err = team_nl_send_event_options_get(team, &opt_inst_list);
2360 team_nl_team_put(team);
2365 static int team_nl_fill_one_port_get(struct sk_buff *skb,
2366 struct team_port *port)
2368 struct nlattr *port_item;
2370 port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT);
2373 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2375 if (port->changed) {
2376 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2378 port->changed = false;
2380 if ((port->removed &&
2381 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2382 (port->state.linkup &&
2383 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2384 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2385 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2387 nla_nest_end(skb, port_item);
2391 nla_nest_cancel(skb, port_item);
2395 static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,
2396 int flags, team_nl_send_func_t *send_func,
2397 struct team_port *one_port)
2399 struct nlattr *port_list;
2400 struct nlmsghdr *nlh;
2402 struct team_port *port;
2404 struct sk_buff *skb = NULL;
2408 port = list_first_entry_or_null(&team->port_list,
2409 struct team_port, list);
2412 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2416 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2417 TEAM_CMD_PORT_LIST_GET);
2421 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2422 goto nla_put_failure;
2423 port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT);
2425 goto nla_put_failure;
2430 /* If one port is selected, called wants to send port list containing
2431 * only this port. Otherwise go through all listed ports and send all
2434 err = team_nl_fill_one_port_get(skb, one_port);
2438 list_for_each_entry_from(port, &team->port_list, list) {
2439 err = team_nl_fill_one_port_get(skb, port);
2441 if (err == -EMSGSIZE) {
2453 nla_nest_end(skb, port_list);
2454 genlmsg_end(skb, hdr);
2459 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2461 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2467 return send_func(skb, team, portid);
2472 genlmsg_cancel(skb, hdr);
2477 static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2478 struct genl_info *info)
2483 team = team_nl_team_get(info);
2487 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq,
2488 NLM_F_ACK, team_nl_send_unicast, NULL);
2490 team_nl_team_put(team);
2495 static struct genl_ops team_nl_ops[] = {
2497 .cmd = TEAM_CMD_NOOP,
2498 .doit = team_nl_cmd_noop,
2499 .policy = team_nl_policy,
2502 .cmd = TEAM_CMD_OPTIONS_SET,
2503 .doit = team_nl_cmd_options_set,
2504 .policy = team_nl_policy,
2505 .flags = GENL_ADMIN_PERM,
2508 .cmd = TEAM_CMD_OPTIONS_GET,
2509 .doit = team_nl_cmd_options_get,
2510 .policy = team_nl_policy,
2511 .flags = GENL_ADMIN_PERM,
2514 .cmd = TEAM_CMD_PORT_LIST_GET,
2515 .doit = team_nl_cmd_port_list_get,
2516 .policy = team_nl_policy,
2517 .flags = GENL_ADMIN_PERM,
2521 static struct genl_multicast_group team_change_event_mcgrp = {
2522 .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME,
2525 static int team_nl_send_multicast(struct sk_buff *skb,
2526 struct team *team, u32 portid)
2528 return genlmsg_multicast_netns(dev_net(team->dev), skb, 0,
2529 team_change_event_mcgrp.id, GFP_KERNEL);
2532 static int team_nl_send_event_options_get(struct team *team,
2533 struct list_head *sel_opt_inst_list)
2535 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2539 static int team_nl_send_event_port_get(struct team *team,
2540 struct team_port *port)
2542 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast,
2546 static int team_nl_init(void)
2550 err = genl_register_family_with_ops(&team_nl_family, team_nl_ops,
2551 ARRAY_SIZE(team_nl_ops));
2555 err = genl_register_mc_group(&team_nl_family, &team_change_event_mcgrp);
2557 goto err_change_event_grp_reg;
2561 err_change_event_grp_reg:
2562 genl_unregister_family(&team_nl_family);
2567 static void team_nl_fini(void)
2569 genl_unregister_family(&team_nl_family);
2577 static void __team_options_change_check(struct team *team)
2580 struct team_option_inst *opt_inst;
2581 LIST_HEAD(sel_opt_inst_list);
2583 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2584 if (opt_inst->changed)
2585 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2587 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
2588 if (err && err != -ESRCH)
2589 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2593 /* rtnl lock is held */
2595 static void __team_port_change_send(struct team_port *port, bool linkup)
2599 port->changed = true;
2600 port->state.linkup = linkup;
2601 team_refresh_port_linkup(port);
2603 struct ethtool_cmd ecmd;
2605 err = __ethtool_get_settings(port->dev, &ecmd);
2607 port->state.speed = ethtool_cmd_speed(&ecmd);
2608 port->state.duplex = ecmd.duplex;
2612 port->state.speed = 0;
2613 port->state.duplex = 0;
2616 err = team_nl_send_event_port_get(port->team, port);
2617 if (err && err != -ESRCH)
2618 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
2619 port->dev->name, err);
2623 static void __team_carrier_check(struct team *team)
2625 struct team_port *port;
2628 if (team->user_carrier_enabled)
2631 team_linkup = false;
2632 list_for_each_entry(port, &team->port_list, list) {
2640 netif_carrier_on(team->dev);
2642 netif_carrier_off(team->dev);
2645 static void __team_port_change_check(struct team_port *port, bool linkup)
2647 if (port->state.linkup != linkup)
2648 __team_port_change_send(port, linkup);
2649 __team_carrier_check(port->team);
2652 static void __team_port_change_port_added(struct team_port *port, bool linkup)
2654 __team_port_change_send(port, linkup);
2655 __team_carrier_check(port->team);
2658 static void __team_port_change_port_removed(struct team_port *port)
2660 port->removed = true;
2661 __team_port_change_send(port, false);
2662 __team_carrier_check(port->team);
2665 static void team_port_change_check(struct team_port *port, bool linkup)
2667 struct team *team = port->team;
2669 mutex_lock(&team->lock);
2670 __team_port_change_check(port, linkup);
2671 mutex_unlock(&team->lock);
2675 /************************************
2676 * Net device notifier event handler
2677 ************************************/
2679 static int team_device_event(struct notifier_block *unused,
2680 unsigned long event, void *ptr)
2682 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2683 struct team_port *port;
2685 port = team_port_get_rtnl(dev);
2691 if (netif_carrier_ok(dev))
2692 team_port_change_check(port, true);
2694 team_port_change_check(port, false);
2696 if (netif_running(port->dev))
2697 team_port_change_check(port,
2698 !!netif_carrier_ok(port->dev));
2700 case NETDEV_UNREGISTER:
2701 team_del_slave(port->team->dev, dev);
2703 case NETDEV_FEAT_CHANGE:
2704 team_compute_features(port->team);
2706 case NETDEV_CHANGEMTU:
2707 /* Forbid to change mtu of underlaying device */
2709 case NETDEV_PRE_TYPE_CHANGE:
2710 /* Forbid to change type of underlaying device */
2716 static struct notifier_block team_notifier_block __read_mostly = {
2717 .notifier_call = team_device_event,
2721 /***********************
2722 * Module init and exit
2723 ***********************/
2725 static int __init team_module_init(void)
2729 register_netdevice_notifier(&team_notifier_block);
2731 err = rtnl_link_register(&team_link_ops);
2735 err = team_nl_init();
2742 rtnl_link_unregister(&team_link_ops);
2745 unregister_netdevice_notifier(&team_notifier_block);
2750 static void __exit team_module_exit(void)
2753 rtnl_link_unregister(&team_link_ops);
2754 unregister_netdevice_notifier(&team_notifier_block);
2757 module_init(team_module_init);
2758 module_exit(team_module_exit);
2760 MODULE_LICENSE("GPL v2");
2761 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
2762 MODULE_DESCRIPTION("Ethernet team device driver");
2763 MODULE_ALIAS_RTNL_LINK(DRV_NAME);