1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * drivers/net/team/team.c - Network team device driver
4 * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
7 #include <linux/ethtool.h>
8 #include <linux/kernel.h>
9 #include <linux/types.h>
10 #include <linux/module.h>
11 #include <linux/init.h>
12 #include <linux/slab.h>
13 #include <linux/rcupdate.h>
14 #include <linux/errno.h>
15 #include <linux/ctype.h>
16 #include <linux/notifier.h>
17 #include <linux/netdevice.h>
18 #include <linux/netpoll.h>
19 #include <linux/if_vlan.h>
20 #include <linux/if_arp.h>
21 #include <linux/socket.h>
22 #include <linux/etherdevice.h>
23 #include <linux/rtnetlink.h>
24 #include <net/rtnetlink.h>
25 #include <net/genetlink.h>
26 #include <net/netlink.h>
27 #include <net/sch_generic.h>
28 #include <generated/utsrelease.h>
29 #include <linux/if_team.h>
31 #define DRV_NAME "team"
38 static struct team_port *team_port_get_rtnl(const struct net_device *dev)
40 struct team_port *port = rtnl_dereference(dev->rx_handler_data);
42 return netif_is_team_port(dev) ? port : NULL;
46 * Since the ability to change device address for open port device is tested in
47 * team_port_add, this function can be called without control of return value
49 static int __set_port_dev_addr(struct net_device *port_dev,
50 const unsigned char *dev_addr)
52 struct sockaddr_storage addr;
54 memcpy(addr.__data, dev_addr, port_dev->addr_len);
55 addr.ss_family = port_dev->type;
56 return dev_set_mac_address(port_dev, (struct sockaddr *)&addr, NULL);
59 static int team_port_set_orig_dev_addr(struct team_port *port)
61 return __set_port_dev_addr(port->dev, port->orig.dev_addr);
64 static int team_port_set_team_dev_addr(struct team *team,
65 struct team_port *port)
67 return __set_port_dev_addr(port->dev, team->dev->dev_addr);
70 int team_modeop_port_enter(struct team *team, struct team_port *port)
72 return team_port_set_team_dev_addr(team, port);
74 EXPORT_SYMBOL(team_modeop_port_enter);
76 void team_modeop_port_change_dev_addr(struct team *team,
77 struct team_port *port)
79 team_port_set_team_dev_addr(team, port);
81 EXPORT_SYMBOL(team_modeop_port_change_dev_addr);
83 static void team_lower_state_changed(struct team_port *port)
85 struct netdev_lag_lower_state_info info;
87 info.link_up = port->linkup;
88 info.tx_enabled = team_port_enabled(port);
89 netdev_lower_state_changed(port->dev, &info);
92 static void team_refresh_port_linkup(struct team_port *port)
94 bool new_linkup = port->user.linkup_enabled ? port->user.linkup :
97 if (port->linkup != new_linkup) {
98 port->linkup = new_linkup;
99 team_lower_state_changed(port);
108 struct team_option_inst { /* One for each option instance */
109 struct list_head list;
110 struct list_head tmp_list;
111 struct team_option *option;
112 struct team_option_inst_info info;
117 static struct team_option *__team_find_option(struct team *team,
118 const char *opt_name)
120 struct team_option *option;
122 list_for_each_entry(option, &team->option_list, list) {
123 if (strcmp(option->name, opt_name) == 0)
129 static void __team_option_inst_del(struct team_option_inst *opt_inst)
131 list_del(&opt_inst->list);
135 static void __team_option_inst_del_option(struct team *team,
136 struct team_option *option)
138 struct team_option_inst *opt_inst, *tmp;
140 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
141 if (opt_inst->option == option)
142 __team_option_inst_del(opt_inst);
146 static int __team_option_inst_add(struct team *team, struct team_option *option,
147 struct team_port *port)
149 struct team_option_inst *opt_inst;
150 unsigned int array_size;
154 array_size = option->array_size;
156 array_size = 1; /* No array but still need one instance */
158 for (i = 0; i < array_size; i++) {
159 opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL);
162 opt_inst->option = option;
163 opt_inst->info.port = port;
164 opt_inst->info.array_index = i;
165 opt_inst->changed = true;
166 opt_inst->removed = false;
167 list_add_tail(&opt_inst->list, &team->option_inst_list);
169 err = option->init(team, &opt_inst->info);
178 static int __team_option_inst_add_option(struct team *team,
179 struct team_option *option)
183 if (!option->per_port) {
184 err = __team_option_inst_add(team, option, NULL);
186 goto inst_del_option;
191 __team_option_inst_del_option(team, option);
195 static void __team_option_inst_mark_removed_option(struct team *team,
196 struct team_option *option)
198 struct team_option_inst *opt_inst;
200 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
201 if (opt_inst->option == option) {
202 opt_inst->changed = true;
203 opt_inst->removed = true;
208 static void __team_option_inst_del_port(struct team *team,
209 struct team_port *port)
211 struct team_option_inst *opt_inst, *tmp;
213 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
214 if (opt_inst->option->per_port &&
215 opt_inst->info.port == port)
216 __team_option_inst_del(opt_inst);
220 static int __team_option_inst_add_port(struct team *team,
221 struct team_port *port)
223 struct team_option *option;
226 list_for_each_entry(option, &team->option_list, list) {
227 if (!option->per_port)
229 err = __team_option_inst_add(team, option, port);
236 __team_option_inst_del_port(team, port);
240 static void __team_option_inst_mark_removed_port(struct team *team,
241 struct team_port *port)
243 struct team_option_inst *opt_inst;
245 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
246 if (opt_inst->info.port == port) {
247 opt_inst->changed = true;
248 opt_inst->removed = true;
253 static int __team_options_register(struct team *team,
254 const struct team_option *option,
258 struct team_option **dst_opts;
261 dst_opts = kcalloc(option_count, sizeof(struct team_option *),
265 for (i = 0; i < option_count; i++, option++) {
266 if (__team_find_option(team, option->name)) {
270 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL);
277 for (i = 0; i < option_count; i++) {
278 err = __team_option_inst_add_option(team, dst_opts[i]);
281 list_add_tail(&dst_opts[i]->list, &team->option_list);
288 for (i--; i >= 0; i--)
289 __team_option_inst_del_option(team, dst_opts[i]);
293 for (i--; i >= 0; i--)
300 static void __team_options_mark_removed(struct team *team,
301 const struct team_option *option,
306 for (i = 0; i < option_count; i++, option++) {
307 struct team_option *del_opt;
309 del_opt = __team_find_option(team, option->name);
311 __team_option_inst_mark_removed_option(team, del_opt);
315 static void __team_options_unregister(struct team *team,
316 const struct team_option *option,
321 for (i = 0; i < option_count; i++, option++) {
322 struct team_option *del_opt;
324 del_opt = __team_find_option(team, option->name);
326 __team_option_inst_del_option(team, del_opt);
327 list_del(&del_opt->list);
333 static void __team_options_change_check(struct team *team);
335 int team_options_register(struct team *team,
336 const struct team_option *option,
341 err = __team_options_register(team, option, option_count);
344 __team_options_change_check(team);
347 EXPORT_SYMBOL(team_options_register);
349 void team_options_unregister(struct team *team,
350 const struct team_option *option,
353 __team_options_mark_removed(team, option, option_count);
354 __team_options_change_check(team);
355 __team_options_unregister(team, option, option_count);
357 EXPORT_SYMBOL(team_options_unregister);
359 static int team_option_get(struct team *team,
360 struct team_option_inst *opt_inst,
361 struct team_gsetter_ctx *ctx)
363 if (!opt_inst->option->getter)
365 return opt_inst->option->getter(team, ctx);
368 static int team_option_set(struct team *team,
369 struct team_option_inst *opt_inst,
370 struct team_gsetter_ctx *ctx)
372 if (!opt_inst->option->setter)
374 return opt_inst->option->setter(team, ctx);
377 void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info)
379 struct team_option_inst *opt_inst;
381 opt_inst = container_of(opt_inst_info, struct team_option_inst, info);
382 opt_inst->changed = true;
384 EXPORT_SYMBOL(team_option_inst_set_change);
386 void team_options_change_check(struct team *team)
388 __team_options_change_check(team);
390 EXPORT_SYMBOL(team_options_change_check);
397 static LIST_HEAD(mode_list);
398 static DEFINE_SPINLOCK(mode_list_lock);
400 struct team_mode_item {
401 struct list_head list;
402 const struct team_mode *mode;
405 static struct team_mode_item *__find_mode(const char *kind)
407 struct team_mode_item *mitem;
409 list_for_each_entry(mitem, &mode_list, list) {
410 if (strcmp(mitem->mode->kind, kind) == 0)
416 static bool is_good_mode_name(const char *name)
418 while (*name != '\0') {
419 if (!isalpha(*name) && !isdigit(*name) && *name != '_')
426 int team_mode_register(const struct team_mode *mode)
429 struct team_mode_item *mitem;
431 if (!is_good_mode_name(mode->kind) ||
432 mode->priv_size > TEAM_MODE_PRIV_SIZE)
435 mitem = kmalloc(sizeof(*mitem), GFP_KERNEL);
439 spin_lock(&mode_list_lock);
440 if (__find_mode(mode->kind)) {
446 list_add_tail(&mitem->list, &mode_list);
448 spin_unlock(&mode_list_lock);
451 EXPORT_SYMBOL(team_mode_register);
453 void team_mode_unregister(const struct team_mode *mode)
455 struct team_mode_item *mitem;
457 spin_lock(&mode_list_lock);
458 mitem = __find_mode(mode->kind);
460 list_del_init(&mitem->list);
463 spin_unlock(&mode_list_lock);
465 EXPORT_SYMBOL(team_mode_unregister);
467 static const struct team_mode *team_mode_get(const char *kind)
469 struct team_mode_item *mitem;
470 const struct team_mode *mode = NULL;
472 if (!try_module_get(THIS_MODULE))
475 spin_lock(&mode_list_lock);
476 mitem = __find_mode(kind);
478 spin_unlock(&mode_list_lock);
479 request_module("team-mode-%s", kind);
480 spin_lock(&mode_list_lock);
481 mitem = __find_mode(kind);
485 if (!try_module_get(mode->owner))
489 spin_unlock(&mode_list_lock);
490 module_put(THIS_MODULE);
494 static void team_mode_put(const struct team_mode *mode)
496 module_put(mode->owner);
499 static bool team_dummy_transmit(struct team *team, struct sk_buff *skb)
501 dev_kfree_skb_any(skb);
505 static rx_handler_result_t team_dummy_receive(struct team *team,
506 struct team_port *port,
509 return RX_HANDLER_ANOTHER;
512 static const struct team_mode __team_no_mode = {
516 static bool team_is_mode_set(struct team *team)
518 return team->mode != &__team_no_mode;
521 static void team_set_no_mode(struct team *team)
523 team->user_carrier_enabled = false;
524 team->mode = &__team_no_mode;
527 static void team_adjust_ops(struct team *team)
530 * To avoid checks in rx/tx skb paths, ensure here that non-null and
531 * correct ops are always set.
534 if (!team->en_port_count || !team_is_mode_set(team) ||
535 !team->mode->ops->transmit)
536 team->ops.transmit = team_dummy_transmit;
538 team->ops.transmit = team->mode->ops->transmit;
540 if (!team->en_port_count || !team_is_mode_set(team) ||
541 !team->mode->ops->receive)
542 team->ops.receive = team_dummy_receive;
544 team->ops.receive = team->mode->ops->receive;
548 * We can benefit from the fact that it's ensured no port is present
549 * at the time of mode change. Therefore no packets are in fly so there's no
550 * need to set mode operations in any special way.
552 static int __team_change_mode(struct team *team,
553 const struct team_mode *new_mode)
555 /* Check if mode was previously set and do cleanup if so */
556 if (team_is_mode_set(team)) {
557 void (*exit_op)(struct team *team) = team->ops.exit;
559 /* Clear ops area so no callback is called any longer */
560 memset(&team->ops, 0, sizeof(struct team_mode_ops));
561 team_adjust_ops(team);
565 team_mode_put(team->mode);
566 team_set_no_mode(team);
567 /* zero private data area */
568 memset(&team->mode_priv, 0,
569 sizeof(struct team) - offsetof(struct team, mode_priv));
575 if (new_mode->ops->init) {
578 err = new_mode->ops->init(team);
583 team->mode = new_mode;
584 memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops));
585 team_adjust_ops(team);
590 static int team_change_mode(struct team *team, const char *kind)
592 const struct team_mode *new_mode;
593 struct net_device *dev = team->dev;
596 if (!list_empty(&team->port_list)) {
597 netdev_err(dev, "No ports can be present during mode change\n");
601 if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) {
602 netdev_err(dev, "Unable to change to the same mode the team is in\n");
606 new_mode = team_mode_get(kind);
608 netdev_err(dev, "Mode \"%s\" not found\n", kind);
612 err = __team_change_mode(team, new_mode);
614 netdev_err(dev, "Failed to change to mode \"%s\"\n", kind);
615 team_mode_put(new_mode);
619 netdev_info(dev, "Mode changed to \"%s\"\n", kind);
624 /*********************
626 *********************/
628 static void team_notify_peers_work(struct work_struct *work)
633 team = container_of(work, struct team, notify_peers.dw.work);
635 if (!rtnl_trylock()) {
636 schedule_delayed_work(&team->notify_peers.dw, 0);
639 val = atomic_dec_if_positive(&team->notify_peers.count_pending);
644 call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, team->dev);
647 schedule_delayed_work(&team->notify_peers.dw,
648 msecs_to_jiffies(team->notify_peers.interval));
651 static void team_notify_peers(struct team *team)
653 if (!team->notify_peers.count || !netif_running(team->dev))
655 atomic_add(team->notify_peers.count, &team->notify_peers.count_pending);
656 schedule_delayed_work(&team->notify_peers.dw, 0);
659 static void team_notify_peers_init(struct team *team)
661 INIT_DELAYED_WORK(&team->notify_peers.dw, team_notify_peers_work);
664 static void team_notify_peers_fini(struct team *team)
666 cancel_delayed_work_sync(&team->notify_peers.dw);
670 /*******************************
671 * Send multicast group rejoins
672 *******************************/
674 static void team_mcast_rejoin_work(struct work_struct *work)
679 team = container_of(work, struct team, mcast_rejoin.dw.work);
681 if (!rtnl_trylock()) {
682 schedule_delayed_work(&team->mcast_rejoin.dw, 0);
685 val = atomic_dec_if_positive(&team->mcast_rejoin.count_pending);
690 call_netdevice_notifiers(NETDEV_RESEND_IGMP, team->dev);
693 schedule_delayed_work(&team->mcast_rejoin.dw,
694 msecs_to_jiffies(team->mcast_rejoin.interval));
697 static void team_mcast_rejoin(struct team *team)
699 if (!team->mcast_rejoin.count || !netif_running(team->dev))
701 atomic_add(team->mcast_rejoin.count, &team->mcast_rejoin.count_pending);
702 schedule_delayed_work(&team->mcast_rejoin.dw, 0);
705 static void team_mcast_rejoin_init(struct team *team)
707 INIT_DELAYED_WORK(&team->mcast_rejoin.dw, team_mcast_rejoin_work);
710 static void team_mcast_rejoin_fini(struct team *team)
712 cancel_delayed_work_sync(&team->mcast_rejoin.dw);
716 /************************
717 * Rx path frame handler
718 ************************/
720 /* note: already called with rcu_read_lock */
721 static rx_handler_result_t team_handle_frame(struct sk_buff **pskb)
723 struct sk_buff *skb = *pskb;
724 struct team_port *port;
726 rx_handler_result_t res;
728 skb = skb_share_check(skb, GFP_ATOMIC);
730 return RX_HANDLER_CONSUMED;
734 port = team_port_get_rcu(skb->dev);
736 if (!team_port_enabled(port)) {
737 if (is_link_local_ether_addr(eth_hdr(skb)->h_dest))
738 /* link-local packets are mostly useful when stack receives them
739 * with the link they arrive on.
741 return RX_HANDLER_PASS;
742 /* allow exact match delivery for disabled ports */
743 res = RX_HANDLER_EXACT;
745 res = team->ops.receive(team, port, skb);
747 if (res == RX_HANDLER_ANOTHER) {
748 struct team_pcpu_stats *pcpu_stats;
750 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
751 u64_stats_update_begin(&pcpu_stats->syncp);
752 u64_stats_inc(&pcpu_stats->rx_packets);
753 u64_stats_add(&pcpu_stats->rx_bytes, skb->len);
754 if (skb->pkt_type == PACKET_MULTICAST)
755 u64_stats_inc(&pcpu_stats->rx_multicast);
756 u64_stats_update_end(&pcpu_stats->syncp);
758 skb->dev = team->dev;
759 } else if (res == RX_HANDLER_EXACT) {
760 this_cpu_inc(team->pcpu_stats->rx_nohandler);
762 this_cpu_inc(team->pcpu_stats->rx_dropped);
769 /*************************************
770 * Multiqueue Tx port select override
771 *************************************/
773 static int team_queue_override_init(struct team *team)
775 struct list_head *listarr;
776 unsigned int queue_cnt = team->dev->num_tx_queues - 1;
781 listarr = kmalloc_array(queue_cnt, sizeof(struct list_head),
785 team->qom_lists = listarr;
786 for (i = 0; i < queue_cnt; i++)
787 INIT_LIST_HEAD(listarr++);
791 static void team_queue_override_fini(struct team *team)
793 kfree(team->qom_lists);
796 static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id)
798 return &team->qom_lists[queue_id - 1];
802 * note: already called with rcu_read_lock
804 static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb)
806 struct list_head *qom_list;
807 struct team_port *port;
809 if (!team->queue_override_enabled || !skb->queue_mapping)
811 qom_list = __team_get_qom_list(team, skb->queue_mapping);
812 list_for_each_entry_rcu(port, qom_list, qom_list) {
813 if (!team_dev_queue_xmit(team, port, skb))
819 static void __team_queue_override_port_del(struct team *team,
820 struct team_port *port)
824 list_del_rcu(&port->qom_list);
827 static bool team_queue_override_port_has_gt_prio_than(struct team_port *port,
828 struct team_port *cur)
830 if (port->priority < cur->priority)
832 if (port->priority > cur->priority)
834 if (port->index < cur->index)
839 static void __team_queue_override_port_add(struct team *team,
840 struct team_port *port)
842 struct team_port *cur;
843 struct list_head *qom_list;
844 struct list_head *node;
848 qom_list = __team_get_qom_list(team, port->queue_id);
850 list_for_each_entry(cur, qom_list, qom_list) {
851 if (team_queue_override_port_has_gt_prio_than(port, cur))
853 node = &cur->qom_list;
855 list_add_tail_rcu(&port->qom_list, node);
858 static void __team_queue_override_enabled_check(struct team *team)
860 struct team_port *port;
861 bool enabled = false;
863 list_for_each_entry(port, &team->port_list, list) {
864 if (port->queue_id) {
869 if (enabled == team->queue_override_enabled)
871 netdev_dbg(team->dev, "%s queue override\n",
872 enabled ? "Enabling" : "Disabling");
873 team->queue_override_enabled = enabled;
876 static void team_queue_override_port_prio_changed(struct team *team,
877 struct team_port *port)
879 if (!port->queue_id || team_port_enabled(port))
881 __team_queue_override_port_del(team, port);
882 __team_queue_override_port_add(team, port);
883 __team_queue_override_enabled_check(team);
886 static void team_queue_override_port_change_queue_id(struct team *team,
887 struct team_port *port,
890 if (team_port_enabled(port)) {
891 __team_queue_override_port_del(team, port);
892 port->queue_id = new_queue_id;
893 __team_queue_override_port_add(team, port);
894 __team_queue_override_enabled_check(team);
896 port->queue_id = new_queue_id;
900 static void team_queue_override_port_add(struct team *team,
901 struct team_port *port)
903 __team_queue_override_port_add(team, port);
904 __team_queue_override_enabled_check(team);
907 static void team_queue_override_port_del(struct team *team,
908 struct team_port *port)
910 __team_queue_override_port_del(team, port);
911 __team_queue_override_enabled_check(team);
919 static bool team_port_find(const struct team *team,
920 const struct team_port *port)
922 struct team_port *cur;
924 list_for_each_entry(cur, &team->port_list, list)
931 * Enable/disable port by adding to enabled port hashlist and setting
932 * port->index (Might be racy so reader could see incorrect ifindex when
933 * processing a flying packet, but that is not a problem). Write guarded
936 static void team_port_enable(struct team *team,
937 struct team_port *port)
939 if (team_port_enabled(port))
941 port->index = team->en_port_count++;
942 hlist_add_head_rcu(&port->hlist,
943 team_port_index_hash(team, port->index));
944 team_adjust_ops(team);
945 team_queue_override_port_add(team, port);
946 if (team->ops.port_enabled)
947 team->ops.port_enabled(team, port);
948 team_notify_peers(team);
949 team_mcast_rejoin(team);
950 team_lower_state_changed(port);
953 static void __reconstruct_port_hlist(struct team *team, int rm_index)
956 struct team_port *port;
958 for (i = rm_index + 1; i < team->en_port_count; i++) {
959 port = team_get_port_by_index(team, i);
960 hlist_del_rcu(&port->hlist);
962 hlist_add_head_rcu(&port->hlist,
963 team_port_index_hash(team, port->index));
967 static void team_port_disable(struct team *team,
968 struct team_port *port)
970 if (!team_port_enabled(port))
972 if (team->ops.port_disabled)
973 team->ops.port_disabled(team, port);
974 hlist_del_rcu(&port->hlist);
975 __reconstruct_port_hlist(team, port->index);
977 team->en_port_count--;
978 team_queue_override_port_del(team, port);
979 team_adjust_ops(team);
980 team_lower_state_changed(port);
983 #define TEAM_VLAN_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \
984 NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | \
985 NETIF_F_HIGHDMA | NETIF_F_LRO)
987 #define TEAM_ENC_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \
988 NETIF_F_RXCSUM | NETIF_F_GSO_SOFTWARE)
990 static void __team_compute_features(struct team *team)
992 struct team_port *port;
993 netdev_features_t vlan_features = TEAM_VLAN_FEATURES &
995 netdev_features_t enc_features = TEAM_ENC_FEATURES;
996 unsigned short max_hard_header_len = ETH_HLEN;
997 unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE |
998 IFF_XMIT_DST_RELEASE_PERM;
1001 list_for_each_entry_rcu(port, &team->port_list, list) {
1002 vlan_features = netdev_increment_features(vlan_features,
1003 port->dev->vlan_features,
1004 TEAM_VLAN_FEATURES);
1006 netdev_increment_features(enc_features,
1007 port->dev->hw_enc_features,
1011 dst_release_flag &= port->dev->priv_flags;
1012 if (port->dev->hard_header_len > max_hard_header_len)
1013 max_hard_header_len = port->dev->hard_header_len;
1017 team->dev->vlan_features = vlan_features;
1018 team->dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL |
1019 NETIF_F_HW_VLAN_CTAG_TX |
1020 NETIF_F_HW_VLAN_STAG_TX;
1021 team->dev->hard_header_len = max_hard_header_len;
1023 team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
1024 if (dst_release_flag == (IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM))
1025 team->dev->priv_flags |= IFF_XMIT_DST_RELEASE;
1028 static void team_compute_features(struct team *team)
1030 __team_compute_features(team);
1031 netdev_change_features(team->dev);
1034 static int team_port_enter(struct team *team, struct team_port *port)
1038 dev_hold(team->dev);
1039 if (team->ops.port_enter) {
1040 err = team->ops.port_enter(team, port);
1042 netdev_err(team->dev, "Device %s failed to enter team mode\n",
1044 goto err_port_enter;
1056 static void team_port_leave(struct team *team, struct team_port *port)
1058 if (team->ops.port_leave)
1059 team->ops.port_leave(team, port);
1063 #ifdef CONFIG_NET_POLL_CONTROLLER
1064 static int __team_port_enable_netpoll(struct team_port *port)
1069 np = kzalloc(sizeof(*np), GFP_KERNEL);
1073 err = __netpoll_setup(np, port->dev);
1082 static int team_port_enable_netpoll(struct team_port *port)
1084 if (!port->team->dev->npinfo)
1087 return __team_port_enable_netpoll(port);
1090 static void team_port_disable_netpoll(struct team_port *port)
1092 struct netpoll *np = port->np;
1101 static int team_port_enable_netpoll(struct team_port *port)
1105 static void team_port_disable_netpoll(struct team_port *port)
1110 static int team_upper_dev_link(struct team *team, struct team_port *port,
1111 struct netlink_ext_ack *extack)
1113 struct netdev_lag_upper_info lag_upper_info;
1116 lag_upper_info.tx_type = team->mode->lag_tx_type;
1117 lag_upper_info.hash_type = NETDEV_LAG_HASH_UNKNOWN;
1118 err = netdev_master_upper_dev_link(port->dev, team->dev, NULL,
1119 &lag_upper_info, extack);
1122 port->dev->priv_flags |= IFF_TEAM_PORT;
1126 static void team_upper_dev_unlink(struct team *team, struct team_port *port)
1128 netdev_upper_dev_unlink(port->dev, team->dev);
1129 port->dev->priv_flags &= ~IFF_TEAM_PORT;
1132 static void __team_port_change_port_added(struct team_port *port, bool linkup);
1133 static int team_dev_type_check_change(struct net_device *dev,
1134 struct net_device *port_dev);
1136 static int team_port_add(struct team *team, struct net_device *port_dev,
1137 struct netlink_ext_ack *extack)
1139 struct net_device *dev = team->dev;
1140 struct team_port *port;
1141 char *portname = port_dev->name;
1144 if (port_dev->flags & IFF_LOOPBACK) {
1145 NL_SET_ERR_MSG(extack, "Loopback device can't be added as a team port");
1146 netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n",
1151 if (netif_is_team_port(port_dev)) {
1152 NL_SET_ERR_MSG(extack, "Device is already a port of a team device");
1153 netdev_err(dev, "Device %s is already a port "
1154 "of a team device\n", portname);
1158 if (dev == port_dev) {
1159 NL_SET_ERR_MSG(extack, "Cannot enslave team device to itself");
1160 netdev_err(dev, "Cannot enslave team device to itself\n");
1164 if (netdev_has_upper_dev(dev, port_dev)) {
1165 NL_SET_ERR_MSG(extack, "Device is already an upper device of the team interface");
1166 netdev_err(dev, "Device %s is already an upper device of the team interface\n",
1171 if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
1172 vlan_uses_dev(dev)) {
1173 NL_SET_ERR_MSG(extack, "Device is VLAN challenged and team device has VLAN set up");
1174 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
1179 err = team_dev_type_check_change(dev, port_dev);
1183 if (port_dev->flags & IFF_UP) {
1184 NL_SET_ERR_MSG(extack, "Device is up. Set it down before adding it as a team port");
1185 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
1190 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size,
1195 port->dev = port_dev;
1197 INIT_LIST_HEAD(&port->qom_list);
1199 port->orig.mtu = port_dev->mtu;
1200 err = dev_set_mtu(port_dev, dev->mtu);
1202 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
1206 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len);
1208 err = team_port_enter(team, port);
1210 netdev_err(dev, "Device %s failed to enter team mode\n",
1212 goto err_port_enter;
1215 err = dev_open(port_dev, extack);
1217 netdev_dbg(dev, "Device %s opening failed\n",
1222 err = vlan_vids_add_by_dev(port_dev, dev);
1224 netdev_err(dev, "Failed to add vlan ids to device %s\n",
1229 err = team_port_enable_netpoll(port);
1231 netdev_err(dev, "Failed to enable netpoll on device %s\n",
1233 goto err_enable_netpoll;
1236 if (!(dev->features & NETIF_F_LRO))
1237 dev_disable_lro(port_dev);
1239 err = netdev_rx_handler_register(port_dev, team_handle_frame,
1242 netdev_err(dev, "Device %s failed to register rx_handler\n",
1244 goto err_handler_register;
1247 err = team_upper_dev_link(team, port, extack);
1249 netdev_err(dev, "Device %s failed to set upper link\n",
1251 goto err_set_upper_link;
1254 err = __team_option_inst_add_port(team, port);
1256 netdev_err(dev, "Device %s failed to add per-port options\n",
1258 goto err_option_port_add;
1261 /* set promiscuity level to new slave */
1262 if (dev->flags & IFF_PROMISC) {
1263 err = dev_set_promiscuity(port_dev, 1);
1265 goto err_set_slave_promisc;
1268 /* set allmulti level to new slave */
1269 if (dev->flags & IFF_ALLMULTI) {
1270 err = dev_set_allmulti(port_dev, 1);
1272 if (dev->flags & IFF_PROMISC)
1273 dev_set_promiscuity(port_dev, -1);
1274 goto err_set_slave_promisc;
1278 if (dev->flags & IFF_UP) {
1279 netif_addr_lock_bh(dev);
1280 dev_uc_sync_multiple(port_dev, dev);
1281 dev_mc_sync_multiple(port_dev, dev);
1282 netif_addr_unlock_bh(dev);
1286 list_add_tail_rcu(&port->list, &team->port_list);
1287 team_port_enable(team, port);
1288 __team_compute_features(team);
1289 __team_port_change_port_added(port, !!netif_oper_up(port_dev));
1290 __team_options_change_check(team);
1292 netdev_info(dev, "Port device %s added\n", portname);
1296 err_set_slave_promisc:
1297 __team_option_inst_del_port(team, port);
1299 err_option_port_add:
1300 team_upper_dev_unlink(team, port);
1303 netdev_rx_handler_unregister(port_dev);
1305 err_handler_register:
1306 team_port_disable_netpoll(port);
1309 vlan_vids_del_by_dev(port_dev, dev);
1312 dev_close(port_dev);
1315 team_port_leave(team, port);
1316 team_port_set_orig_dev_addr(port);
1319 dev_set_mtu(port_dev, port->orig.mtu);
1327 static void __team_port_change_port_removed(struct team_port *port);
1329 static int team_port_del(struct team *team, struct net_device *port_dev)
1331 struct net_device *dev = team->dev;
1332 struct team_port *port;
1333 char *portname = port_dev->name;
1335 port = team_port_get_rtnl(port_dev);
1336 if (!port || !team_port_find(team, port)) {
1337 netdev_err(dev, "Device %s does not act as a port of this team\n",
1342 team_port_disable(team, port);
1343 list_del_rcu(&port->list);
1345 if (dev->flags & IFF_PROMISC)
1346 dev_set_promiscuity(port_dev, -1);
1347 if (dev->flags & IFF_ALLMULTI)
1348 dev_set_allmulti(port_dev, -1);
1350 team_upper_dev_unlink(team, port);
1351 netdev_rx_handler_unregister(port_dev);
1352 team_port_disable_netpoll(port);
1353 vlan_vids_del_by_dev(port_dev, dev);
1354 if (dev->flags & IFF_UP) {
1355 dev_uc_unsync(port_dev, dev);
1356 dev_mc_unsync(port_dev, dev);
1358 dev_close(port_dev);
1359 team_port_leave(team, port);
1361 __team_option_inst_mark_removed_port(team, port);
1362 __team_options_change_check(team);
1363 __team_option_inst_del_port(team, port);
1364 __team_port_change_port_removed(port);
1366 team_port_set_orig_dev_addr(port);
1367 dev_set_mtu(port_dev, port->orig.mtu);
1368 kfree_rcu(port, rcu);
1369 netdev_info(dev, "Port device %s removed\n", portname);
1370 __team_compute_features(team);
1380 static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
1382 ctx->data.str_val = team->mode->kind;
1386 static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
1388 return team_change_mode(team, ctx->data.str_val);
1391 static int team_notify_peers_count_get(struct team *team,
1392 struct team_gsetter_ctx *ctx)
1394 ctx->data.u32_val = team->notify_peers.count;
1398 static int team_notify_peers_count_set(struct team *team,
1399 struct team_gsetter_ctx *ctx)
1401 team->notify_peers.count = ctx->data.u32_val;
1405 static int team_notify_peers_interval_get(struct team *team,
1406 struct team_gsetter_ctx *ctx)
1408 ctx->data.u32_val = team->notify_peers.interval;
1412 static int team_notify_peers_interval_set(struct team *team,
1413 struct team_gsetter_ctx *ctx)
1415 team->notify_peers.interval = ctx->data.u32_val;
1419 static int team_mcast_rejoin_count_get(struct team *team,
1420 struct team_gsetter_ctx *ctx)
1422 ctx->data.u32_val = team->mcast_rejoin.count;
1426 static int team_mcast_rejoin_count_set(struct team *team,
1427 struct team_gsetter_ctx *ctx)
1429 team->mcast_rejoin.count = ctx->data.u32_val;
1433 static int team_mcast_rejoin_interval_get(struct team *team,
1434 struct team_gsetter_ctx *ctx)
1436 ctx->data.u32_val = team->mcast_rejoin.interval;
1440 static int team_mcast_rejoin_interval_set(struct team *team,
1441 struct team_gsetter_ctx *ctx)
1443 team->mcast_rejoin.interval = ctx->data.u32_val;
1447 static int team_port_en_option_get(struct team *team,
1448 struct team_gsetter_ctx *ctx)
1450 struct team_port *port = ctx->info->port;
1452 ctx->data.bool_val = team_port_enabled(port);
1456 static int team_port_en_option_set(struct team *team,
1457 struct team_gsetter_ctx *ctx)
1459 struct team_port *port = ctx->info->port;
1461 if (ctx->data.bool_val)
1462 team_port_enable(team, port);
1464 team_port_disable(team, port);
1468 static int team_user_linkup_option_get(struct team *team,
1469 struct team_gsetter_ctx *ctx)
1471 struct team_port *port = ctx->info->port;
1473 ctx->data.bool_val = port->user.linkup;
1477 static void __team_carrier_check(struct team *team);
1479 static int team_user_linkup_option_set(struct team *team,
1480 struct team_gsetter_ctx *ctx)
1482 struct team_port *port = ctx->info->port;
1484 port->user.linkup = ctx->data.bool_val;
1485 team_refresh_port_linkup(port);
1486 __team_carrier_check(port->team);
1490 static int team_user_linkup_en_option_get(struct team *team,
1491 struct team_gsetter_ctx *ctx)
1493 struct team_port *port = ctx->info->port;
1495 ctx->data.bool_val = port->user.linkup_enabled;
1499 static int team_user_linkup_en_option_set(struct team *team,
1500 struct team_gsetter_ctx *ctx)
1502 struct team_port *port = ctx->info->port;
1504 port->user.linkup_enabled = ctx->data.bool_val;
1505 team_refresh_port_linkup(port);
1506 __team_carrier_check(port->team);
1510 static int team_priority_option_get(struct team *team,
1511 struct team_gsetter_ctx *ctx)
1513 struct team_port *port = ctx->info->port;
1515 ctx->data.s32_val = port->priority;
1519 static int team_priority_option_set(struct team *team,
1520 struct team_gsetter_ctx *ctx)
1522 struct team_port *port = ctx->info->port;
1523 s32 priority = ctx->data.s32_val;
1525 if (port->priority == priority)
1527 port->priority = priority;
1528 team_queue_override_port_prio_changed(team, port);
1532 static int team_queue_id_option_get(struct team *team,
1533 struct team_gsetter_ctx *ctx)
1535 struct team_port *port = ctx->info->port;
1537 ctx->data.u32_val = port->queue_id;
1541 static int team_queue_id_option_set(struct team *team,
1542 struct team_gsetter_ctx *ctx)
1544 struct team_port *port = ctx->info->port;
1545 u16 new_queue_id = ctx->data.u32_val;
1547 if (port->queue_id == new_queue_id)
1549 if (new_queue_id >= team->dev->real_num_tx_queues)
1551 team_queue_override_port_change_queue_id(team, port, new_queue_id);
1555 static const struct team_option team_options[] = {
1558 .type = TEAM_OPTION_TYPE_STRING,
1559 .getter = team_mode_option_get,
1560 .setter = team_mode_option_set,
1563 .name = "notify_peers_count",
1564 .type = TEAM_OPTION_TYPE_U32,
1565 .getter = team_notify_peers_count_get,
1566 .setter = team_notify_peers_count_set,
1569 .name = "notify_peers_interval",
1570 .type = TEAM_OPTION_TYPE_U32,
1571 .getter = team_notify_peers_interval_get,
1572 .setter = team_notify_peers_interval_set,
1575 .name = "mcast_rejoin_count",
1576 .type = TEAM_OPTION_TYPE_U32,
1577 .getter = team_mcast_rejoin_count_get,
1578 .setter = team_mcast_rejoin_count_set,
1581 .name = "mcast_rejoin_interval",
1582 .type = TEAM_OPTION_TYPE_U32,
1583 .getter = team_mcast_rejoin_interval_get,
1584 .setter = team_mcast_rejoin_interval_set,
1588 .type = TEAM_OPTION_TYPE_BOOL,
1590 .getter = team_port_en_option_get,
1591 .setter = team_port_en_option_set,
1594 .name = "user_linkup",
1595 .type = TEAM_OPTION_TYPE_BOOL,
1597 .getter = team_user_linkup_option_get,
1598 .setter = team_user_linkup_option_set,
1601 .name = "user_linkup_enabled",
1602 .type = TEAM_OPTION_TYPE_BOOL,
1604 .getter = team_user_linkup_en_option_get,
1605 .setter = team_user_linkup_en_option_set,
1609 .type = TEAM_OPTION_TYPE_S32,
1611 .getter = team_priority_option_get,
1612 .setter = team_priority_option_set,
1616 .type = TEAM_OPTION_TYPE_U32,
1618 .getter = team_queue_id_option_get,
1619 .setter = team_queue_id_option_set,
1624 static int team_init(struct net_device *dev)
1626 struct team *team = netdev_priv(dev);
1631 team_set_no_mode(team);
1632 team->notifier_ctx = false;
1634 team->pcpu_stats = netdev_alloc_pcpu_stats(struct team_pcpu_stats);
1635 if (!team->pcpu_stats)
1638 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
1639 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
1640 INIT_LIST_HEAD(&team->port_list);
1641 err = team_queue_override_init(team);
1643 goto err_team_queue_override_init;
1645 team_adjust_ops(team);
1647 INIT_LIST_HEAD(&team->option_list);
1648 INIT_LIST_HEAD(&team->option_inst_list);
1650 team_notify_peers_init(team);
1651 team_mcast_rejoin_init(team);
1653 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1655 goto err_options_register;
1656 netif_carrier_off(dev);
1658 lockdep_register_key(&team->team_lock_key);
1659 __mutex_init(&team->lock, "team->team_lock_key", &team->team_lock_key);
1660 netdev_lockdep_set_classes(dev);
1664 err_options_register:
1665 team_mcast_rejoin_fini(team);
1666 team_notify_peers_fini(team);
1667 team_queue_override_fini(team);
1668 err_team_queue_override_init:
1669 free_percpu(team->pcpu_stats);
1674 static void team_uninit(struct net_device *dev)
1676 struct team *team = netdev_priv(dev);
1677 struct team_port *port;
1678 struct team_port *tmp;
1680 mutex_lock(&team->lock);
1681 list_for_each_entry_safe(port, tmp, &team->port_list, list)
1682 team_port_del(team, port->dev);
1684 __team_change_mode(team, NULL); /* cleanup */
1685 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
1686 team_mcast_rejoin_fini(team);
1687 team_notify_peers_fini(team);
1688 team_queue_override_fini(team);
1689 mutex_unlock(&team->lock);
1690 netdev_change_features(dev);
1691 lockdep_unregister_key(&team->team_lock_key);
1694 static void team_destructor(struct net_device *dev)
1696 struct team *team = netdev_priv(dev);
1698 free_percpu(team->pcpu_stats);
1701 static int team_open(struct net_device *dev)
1706 static int team_close(struct net_device *dev)
1708 struct team *team = netdev_priv(dev);
1709 struct team_port *port;
1711 list_for_each_entry(port, &team->port_list, list) {
1712 dev_uc_unsync(port->dev, dev);
1713 dev_mc_unsync(port->dev, dev);
1720 * note: already called with rcu_read_lock
1722 static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1724 struct team *team = netdev_priv(dev);
1726 unsigned int len = skb->len;
1728 tx_success = team_queue_override_transmit(team, skb);
1730 tx_success = team->ops.transmit(team, skb);
1732 struct team_pcpu_stats *pcpu_stats;
1734 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1735 u64_stats_update_begin(&pcpu_stats->syncp);
1736 u64_stats_inc(&pcpu_stats->tx_packets);
1737 u64_stats_add(&pcpu_stats->tx_bytes, len);
1738 u64_stats_update_end(&pcpu_stats->syncp);
1740 this_cpu_inc(team->pcpu_stats->tx_dropped);
1743 return NETDEV_TX_OK;
1746 static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb,
1747 struct net_device *sb_dev)
1750 * This helper function exists to help dev_pick_tx get the correct
1751 * destination queue. Using a helper function skips a call to
1752 * skb_tx_hash and will put the skbs in the queue we expect on their
1753 * way down to the team driver.
1755 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1758 * Save the original txq to restore before passing to the driver
1760 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1762 if (unlikely(txq >= dev->real_num_tx_queues)) {
1764 txq -= dev->real_num_tx_queues;
1765 } while (txq >= dev->real_num_tx_queues);
1770 static void team_change_rx_flags(struct net_device *dev, int change)
1772 struct team *team = netdev_priv(dev);
1773 struct team_port *port;
1777 list_for_each_entry_rcu(port, &team->port_list, list) {
1778 if (change & IFF_PROMISC) {
1779 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1780 dev_set_promiscuity(port->dev, inc);
1782 if (change & IFF_ALLMULTI) {
1783 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1784 dev_set_allmulti(port->dev, inc);
1790 static void team_set_rx_mode(struct net_device *dev)
1792 struct team *team = netdev_priv(dev);
1793 struct team_port *port;
1796 list_for_each_entry_rcu(port, &team->port_list, list) {
1797 dev_uc_sync_multiple(port->dev, dev);
1798 dev_mc_sync_multiple(port->dev, dev);
1803 static int team_set_mac_address(struct net_device *dev, void *p)
1805 struct sockaddr *addr = p;
1806 struct team *team = netdev_priv(dev);
1807 struct team_port *port;
1809 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data))
1810 return -EADDRNOTAVAIL;
1811 dev_addr_set(dev, addr->sa_data);
1812 mutex_lock(&team->lock);
1813 list_for_each_entry(port, &team->port_list, list)
1814 if (team->ops.port_change_dev_addr)
1815 team->ops.port_change_dev_addr(team, port);
1816 mutex_unlock(&team->lock);
1820 static int team_change_mtu(struct net_device *dev, int new_mtu)
1822 struct team *team = netdev_priv(dev);
1823 struct team_port *port;
1827 * Alhough this is reader, it's guarded by team lock. It's not possible
1828 * to traverse list in reverse under rcu_read_lock
1830 mutex_lock(&team->lock);
1831 team->port_mtu_change_allowed = true;
1832 list_for_each_entry(port, &team->port_list, list) {
1833 err = dev_set_mtu(port->dev, new_mtu);
1835 netdev_err(dev, "Device %s failed to change mtu",
1840 team->port_mtu_change_allowed = false;
1841 mutex_unlock(&team->lock);
1848 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1849 dev_set_mtu(port->dev, dev->mtu);
1850 team->port_mtu_change_allowed = false;
1851 mutex_unlock(&team->lock);
1857 team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1859 struct team *team = netdev_priv(dev);
1860 struct team_pcpu_stats *p;
1861 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1862 u32 rx_dropped = 0, tx_dropped = 0, rx_nohandler = 0;
1866 for_each_possible_cpu(i) {
1867 p = per_cpu_ptr(team->pcpu_stats, i);
1869 start = u64_stats_fetch_begin(&p->syncp);
1870 rx_packets = u64_stats_read(&p->rx_packets);
1871 rx_bytes = u64_stats_read(&p->rx_bytes);
1872 rx_multicast = u64_stats_read(&p->rx_multicast);
1873 tx_packets = u64_stats_read(&p->tx_packets);
1874 tx_bytes = u64_stats_read(&p->tx_bytes);
1875 } while (u64_stats_fetch_retry(&p->syncp, start));
1877 stats->rx_packets += rx_packets;
1878 stats->rx_bytes += rx_bytes;
1879 stats->multicast += rx_multicast;
1880 stats->tx_packets += tx_packets;
1881 stats->tx_bytes += tx_bytes;
1883 * rx_dropped, tx_dropped & rx_nohandler are u32,
1884 * updated without syncp protection.
1886 rx_dropped += READ_ONCE(p->rx_dropped);
1887 tx_dropped += READ_ONCE(p->tx_dropped);
1888 rx_nohandler += READ_ONCE(p->rx_nohandler);
1890 stats->rx_dropped = rx_dropped;
1891 stats->tx_dropped = tx_dropped;
1892 stats->rx_nohandler = rx_nohandler;
1895 static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
1897 struct team *team = netdev_priv(dev);
1898 struct team_port *port;
1902 * Alhough this is reader, it's guarded by team lock. It's not possible
1903 * to traverse list in reverse under rcu_read_lock
1905 mutex_lock(&team->lock);
1906 list_for_each_entry(port, &team->port_list, list) {
1907 err = vlan_vid_add(port->dev, proto, vid);
1911 mutex_unlock(&team->lock);
1916 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1917 vlan_vid_del(port->dev, proto, vid);
1918 mutex_unlock(&team->lock);
1923 static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
1925 struct team *team = netdev_priv(dev);
1926 struct team_port *port;
1928 mutex_lock(&team->lock);
1929 list_for_each_entry(port, &team->port_list, list)
1930 vlan_vid_del(port->dev, proto, vid);
1931 mutex_unlock(&team->lock);
1936 #ifdef CONFIG_NET_POLL_CONTROLLER
1937 static void team_poll_controller(struct net_device *dev)
1941 static void __team_netpoll_cleanup(struct team *team)
1943 struct team_port *port;
1945 list_for_each_entry(port, &team->port_list, list)
1946 team_port_disable_netpoll(port);
1949 static void team_netpoll_cleanup(struct net_device *dev)
1951 struct team *team = netdev_priv(dev);
1953 mutex_lock(&team->lock);
1954 __team_netpoll_cleanup(team);
1955 mutex_unlock(&team->lock);
1958 static int team_netpoll_setup(struct net_device *dev,
1959 struct netpoll_info *npifo)
1961 struct team *team = netdev_priv(dev);
1962 struct team_port *port;
1965 mutex_lock(&team->lock);
1966 list_for_each_entry(port, &team->port_list, list) {
1967 err = __team_port_enable_netpoll(port);
1969 __team_netpoll_cleanup(team);
1973 mutex_unlock(&team->lock);
1978 static int team_add_slave(struct net_device *dev, struct net_device *port_dev,
1979 struct netlink_ext_ack *extack)
1981 struct team *team = netdev_priv(dev);
1984 mutex_lock(&team->lock);
1985 err = team_port_add(team, port_dev, extack);
1986 mutex_unlock(&team->lock);
1989 netdev_change_features(dev);
1994 static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1996 struct team *team = netdev_priv(dev);
1999 mutex_lock(&team->lock);
2000 err = team_port_del(team, port_dev);
2001 mutex_unlock(&team->lock);
2006 if (netif_is_team_master(port_dev)) {
2007 lockdep_unregister_key(&team->team_lock_key);
2008 lockdep_register_key(&team->team_lock_key);
2009 lockdep_set_class(&team->lock, &team->team_lock_key);
2011 netdev_change_features(dev);
2016 static netdev_features_t team_fix_features(struct net_device *dev,
2017 netdev_features_t features)
2019 struct team_port *port;
2020 struct team *team = netdev_priv(dev);
2021 netdev_features_t mask;
2024 features &= ~NETIF_F_ONE_FOR_ALL;
2025 features |= NETIF_F_ALL_FOR_ALL;
2028 list_for_each_entry_rcu(port, &team->port_list, list) {
2029 features = netdev_increment_features(features,
2030 port->dev->features,
2035 features = netdev_add_tso_features(features, mask);
2040 static int team_change_carrier(struct net_device *dev, bool new_carrier)
2042 struct team *team = netdev_priv(dev);
2044 team->user_carrier_enabled = true;
2047 netif_carrier_on(dev);
2049 netif_carrier_off(dev);
2053 static const struct net_device_ops team_netdev_ops = {
2054 .ndo_init = team_init,
2055 .ndo_uninit = team_uninit,
2056 .ndo_open = team_open,
2057 .ndo_stop = team_close,
2058 .ndo_start_xmit = team_xmit,
2059 .ndo_select_queue = team_select_queue,
2060 .ndo_change_rx_flags = team_change_rx_flags,
2061 .ndo_set_rx_mode = team_set_rx_mode,
2062 .ndo_set_mac_address = team_set_mac_address,
2063 .ndo_change_mtu = team_change_mtu,
2064 .ndo_get_stats64 = team_get_stats64,
2065 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
2066 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
2067 #ifdef CONFIG_NET_POLL_CONTROLLER
2068 .ndo_poll_controller = team_poll_controller,
2069 .ndo_netpoll_setup = team_netpoll_setup,
2070 .ndo_netpoll_cleanup = team_netpoll_cleanup,
2072 .ndo_add_slave = team_add_slave,
2073 .ndo_del_slave = team_del_slave,
2074 .ndo_fix_features = team_fix_features,
2075 .ndo_change_carrier = team_change_carrier,
2076 .ndo_features_check = passthru_features_check,
2079 /***********************
2081 ***********************/
2083 static void team_ethtool_get_drvinfo(struct net_device *dev,
2084 struct ethtool_drvinfo *drvinfo)
2086 strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
2087 strscpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
2090 static int team_ethtool_get_link_ksettings(struct net_device *dev,
2091 struct ethtool_link_ksettings *cmd)
2093 struct team *team= netdev_priv(dev);
2094 unsigned long speed = 0;
2095 struct team_port *port;
2097 cmd->base.duplex = DUPLEX_UNKNOWN;
2098 cmd->base.port = PORT_OTHER;
2101 list_for_each_entry_rcu(port, &team->port_list, list) {
2102 if (team_port_txable(port)) {
2103 if (port->state.speed != SPEED_UNKNOWN)
2104 speed += port->state.speed;
2105 if (cmd->base.duplex == DUPLEX_UNKNOWN &&
2106 port->state.duplex != DUPLEX_UNKNOWN)
2107 cmd->base.duplex = port->state.duplex;
2112 cmd->base.speed = speed ? : SPEED_UNKNOWN;
2117 static const struct ethtool_ops team_ethtool_ops = {
2118 .get_drvinfo = team_ethtool_get_drvinfo,
2119 .get_link = ethtool_op_get_link,
2120 .get_link_ksettings = team_ethtool_get_link_ksettings,
2123 /***********************
2124 * rt netlink interface
2125 ***********************/
2127 static void team_setup_by_port(struct net_device *dev,
2128 struct net_device *port_dev)
2130 dev->header_ops = port_dev->header_ops;
2131 dev->type = port_dev->type;
2132 dev->hard_header_len = port_dev->hard_header_len;
2133 dev->needed_headroom = port_dev->needed_headroom;
2134 dev->addr_len = port_dev->addr_len;
2135 dev->mtu = port_dev->mtu;
2136 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
2137 eth_hw_addr_inherit(dev, port_dev);
2140 static int team_dev_type_check_change(struct net_device *dev,
2141 struct net_device *port_dev)
2143 struct team *team = netdev_priv(dev);
2144 char *portname = port_dev->name;
2147 if (dev->type == port_dev->type)
2149 if (!list_empty(&team->port_list)) {
2150 netdev_err(dev, "Device %s is of different type\n", portname);
2153 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev);
2154 err = notifier_to_errno(err);
2156 netdev_err(dev, "Refused to change device type\n");
2161 team_setup_by_port(dev, port_dev);
2162 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev);
2166 static void team_setup(struct net_device *dev)
2169 dev->max_mtu = ETH_MAX_MTU;
2171 dev->netdev_ops = &team_netdev_ops;
2172 dev->ethtool_ops = &team_ethtool_ops;
2173 dev->needs_free_netdev = true;
2174 dev->priv_destructor = team_destructor;
2175 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
2176 dev->priv_flags |= IFF_NO_QUEUE;
2177 dev->priv_flags |= IFF_TEAM;
2180 * Indicate we support unicast address filtering. That way core won't
2181 * bring us to promisc mode in case a unicast addr is added.
2182 * Let this up to underlay drivers.
2184 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
2186 dev->features |= NETIF_F_LLTX;
2187 dev->features |= NETIF_F_GRO;
2189 /* Don't allow team devices to change network namespaces. */
2190 dev->features |= NETIF_F_NETNS_LOCAL;
2192 dev->hw_features = TEAM_VLAN_FEATURES |
2193 NETIF_F_HW_VLAN_CTAG_RX |
2194 NETIF_F_HW_VLAN_CTAG_FILTER;
2196 dev->hw_features |= NETIF_F_GSO_ENCAP_ALL;
2197 dev->features |= dev->hw_features;
2198 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX;
2201 static int team_newlink(struct net *src_net, struct net_device *dev,
2202 struct nlattr *tb[], struct nlattr *data[],
2203 struct netlink_ext_ack *extack)
2205 if (tb[IFLA_ADDRESS] == NULL)
2206 eth_hw_addr_random(dev);
2208 return register_netdevice(dev);
2211 static int team_validate(struct nlattr *tb[], struct nlattr *data[],
2212 struct netlink_ext_ack *extack)
2214 if (tb[IFLA_ADDRESS]) {
2215 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
2217 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
2218 return -EADDRNOTAVAIL;
2223 static unsigned int team_get_num_tx_queues(void)
2225 return TEAM_DEFAULT_NUM_TX_QUEUES;
2228 static unsigned int team_get_num_rx_queues(void)
2230 return TEAM_DEFAULT_NUM_RX_QUEUES;
2233 static struct rtnl_link_ops team_link_ops __read_mostly = {
2235 .priv_size = sizeof(struct team),
2236 .setup = team_setup,
2237 .newlink = team_newlink,
2238 .validate = team_validate,
2239 .get_num_tx_queues = team_get_num_tx_queues,
2240 .get_num_rx_queues = team_get_num_rx_queues,
2244 /***********************************
2245 * Generic netlink custom interface
2246 ***********************************/
2248 static struct genl_family team_nl_family;
2250 static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
2251 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
2252 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
2253 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
2254 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
2257 static const struct nla_policy
2258 team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
2259 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
2260 [TEAM_ATTR_OPTION_NAME] = {
2262 .len = TEAM_STRING_MAX_LEN,
2264 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
2265 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
2266 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
2267 [TEAM_ATTR_OPTION_PORT_IFINDEX] = { .type = NLA_U32 },
2268 [TEAM_ATTR_OPTION_ARRAY_INDEX] = { .type = NLA_U32 },
2271 static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
2273 struct sk_buff *msg;
2277 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2281 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
2282 &team_nl_family, 0, TEAM_CMD_NOOP);
2288 genlmsg_end(msg, hdr);
2290 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid);
2299 * Netlink cmd functions should be locked by following two functions.
2300 * Since dev gets held here, that ensures dev won't disappear in between.
2302 static struct team *team_nl_team_get(struct genl_info *info)
2304 struct net *net = genl_info_net(info);
2306 struct net_device *dev;
2309 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
2312 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
2313 dev = dev_get_by_index(net, ifindex);
2314 if (!dev || dev->netdev_ops != &team_netdev_ops) {
2320 team = netdev_priv(dev);
2321 mutex_lock(&team->lock);
2325 static void team_nl_team_put(struct team *team)
2327 mutex_unlock(&team->lock);
2331 typedef int team_nl_send_func_t(struct sk_buff *skb,
2332 struct team *team, u32 portid);
2334 static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid)
2336 return genlmsg_unicast(dev_net(team->dev), skb, portid);
2339 static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
2340 struct team_option_inst *opt_inst)
2342 struct nlattr *option_item;
2343 struct team_option *option = opt_inst->option;
2344 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
2345 struct team_gsetter_ctx ctx;
2348 ctx.info = opt_inst_info;
2349 err = team_option_get(team, opt_inst, &ctx);
2353 option_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_OPTION);
2357 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
2359 if (opt_inst_info->port &&
2360 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
2361 opt_inst_info->port->dev->ifindex))
2363 if (opt_inst->option->array_size &&
2364 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
2365 opt_inst_info->array_index))
2368 switch (option->type) {
2369 case TEAM_OPTION_TYPE_U32:
2370 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
2372 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
2375 case TEAM_OPTION_TYPE_STRING:
2376 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
2378 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
2382 case TEAM_OPTION_TYPE_BINARY:
2383 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
2385 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
2386 ctx.data.bin_val.ptr))
2389 case TEAM_OPTION_TYPE_BOOL:
2390 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
2392 if (ctx.data.bool_val &&
2393 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
2396 case TEAM_OPTION_TYPE_S32:
2397 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32))
2399 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val))
2405 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
2407 if (opt_inst->changed) {
2408 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
2410 opt_inst->changed = false;
2412 nla_nest_end(skb, option_item);
2416 nla_nest_cancel(skb, option_item);
2420 static int __send_and_alloc_skb(struct sk_buff **pskb,
2421 struct team *team, u32 portid,
2422 team_nl_send_func_t *send_func)
2427 err = send_func(*pskb, team, portid);
2431 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2437 static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
2438 int flags, team_nl_send_func_t *send_func,
2439 struct list_head *sel_opt_inst_list)
2441 struct nlattr *option_list;
2442 struct nlmsghdr *nlh;
2444 struct team_option_inst *opt_inst;
2446 struct sk_buff *skb = NULL;
2450 opt_inst = list_first_entry(sel_opt_inst_list,
2451 struct team_option_inst, tmp_list);
2454 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2458 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2459 TEAM_CMD_OPTIONS_GET);
2465 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2466 goto nla_put_failure;
2467 option_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_OPTION);
2469 goto nla_put_failure;
2473 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
2474 err = team_nl_fill_one_option_get(skb, team, opt_inst);
2476 if (err == -EMSGSIZE) {
2487 nla_nest_end(skb, option_list);
2488 genlmsg_end(skb, hdr);
2493 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2495 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2501 return send_func(skb, team, portid);
2510 static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
2513 struct team_option_inst *opt_inst;
2515 LIST_HEAD(sel_opt_inst_list);
2517 team = team_nl_team_get(info);
2521 list_for_each_entry(opt_inst, &team->option_inst_list, list)
2522 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2523 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq,
2524 NLM_F_ACK, team_nl_send_unicast,
2525 &sel_opt_inst_list);
2527 team_nl_team_put(team);
2532 static int team_nl_send_event_options_get(struct team *team,
2533 struct list_head *sel_opt_inst_list);
2535 static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
2540 struct nlattr *nl_option;
2544 team = team_nl_team_get(info);
2551 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
2556 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
2557 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
2558 struct nlattr *attr;
2559 struct nlattr *attr_data;
2560 LIST_HEAD(opt_inst_list);
2561 enum team_option_type opt_type;
2562 int opt_port_ifindex = 0; /* != 0 for per-port options */
2563 u32 opt_array_index = 0;
2564 bool opt_is_array = false;
2565 struct team_option_inst *opt_inst;
2567 bool opt_found = false;
2569 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
2573 err = nla_parse_nested_deprecated(opt_attrs,
2574 TEAM_ATTR_OPTION_MAX,
2576 team_nl_option_policy,
2580 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
2581 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
2585 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
2587 opt_type = TEAM_OPTION_TYPE_U32;
2590 opt_type = TEAM_OPTION_TYPE_STRING;
2593 opt_type = TEAM_OPTION_TYPE_BINARY;
2596 opt_type = TEAM_OPTION_TYPE_BOOL;
2599 opt_type = TEAM_OPTION_TYPE_S32;
2605 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
2606 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
2611 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
2612 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
2614 opt_port_ifindex = nla_get_u32(attr);
2616 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
2618 opt_is_array = true;
2619 opt_array_index = nla_get_u32(attr);
2622 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2623 struct team_option *option = opt_inst->option;
2624 struct team_gsetter_ctx ctx;
2625 struct team_option_inst_info *opt_inst_info;
2628 opt_inst_info = &opt_inst->info;
2629 tmp_ifindex = opt_inst_info->port ?
2630 opt_inst_info->port->dev->ifindex : 0;
2631 if (option->type != opt_type ||
2632 strcmp(option->name, opt_name) ||
2633 tmp_ifindex != opt_port_ifindex ||
2634 (option->array_size && !opt_is_array) ||
2635 opt_inst_info->array_index != opt_array_index)
2638 ctx.info = opt_inst_info;
2640 case TEAM_OPTION_TYPE_U32:
2641 ctx.data.u32_val = nla_get_u32(attr_data);
2643 case TEAM_OPTION_TYPE_STRING:
2644 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2648 ctx.data.str_val = nla_data(attr_data);
2650 case TEAM_OPTION_TYPE_BINARY:
2651 ctx.data.bin_val.len = nla_len(attr_data);
2652 ctx.data.bin_val.ptr = nla_data(attr_data);
2654 case TEAM_OPTION_TYPE_BOOL:
2655 ctx.data.bool_val = attr_data ? true : false;
2657 case TEAM_OPTION_TYPE_S32:
2658 ctx.data.s32_val = nla_get_s32(attr_data);
2663 err = team_option_set(team, opt_inst, &ctx);
2666 opt_inst->changed = true;
2667 list_add(&opt_inst->tmp_list, &opt_inst_list);
2674 err = team_nl_send_event_options_get(team, &opt_inst_list);
2680 team_nl_team_put(team);
2686 static int team_nl_fill_one_port_get(struct sk_buff *skb,
2687 struct team_port *port)
2689 struct nlattr *port_item;
2691 port_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_PORT);
2694 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2696 if (port->changed) {
2697 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2699 port->changed = false;
2701 if ((port->removed &&
2702 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2703 (port->state.linkup &&
2704 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2705 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2706 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2708 nla_nest_end(skb, port_item);
2712 nla_nest_cancel(skb, port_item);
2716 static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,
2717 int flags, team_nl_send_func_t *send_func,
2718 struct team_port *one_port)
2720 struct nlattr *port_list;
2721 struct nlmsghdr *nlh;
2723 struct team_port *port;
2725 struct sk_buff *skb = NULL;
2729 port = list_first_entry_or_null(&team->port_list,
2730 struct team_port, list);
2733 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2737 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2738 TEAM_CMD_PORT_LIST_GET);
2744 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2745 goto nla_put_failure;
2746 port_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_PORT);
2748 goto nla_put_failure;
2753 /* If one port is selected, called wants to send port list containing
2754 * only this port. Otherwise go through all listed ports and send all
2757 err = team_nl_fill_one_port_get(skb, one_port);
2761 list_for_each_entry_from(port, &team->port_list, list) {
2762 err = team_nl_fill_one_port_get(skb, port);
2764 if (err == -EMSGSIZE) {
2776 nla_nest_end(skb, port_list);
2777 genlmsg_end(skb, hdr);
2782 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2784 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2790 return send_func(skb, team, portid);
2799 static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2800 struct genl_info *info)
2805 team = team_nl_team_get(info);
2809 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq,
2810 NLM_F_ACK, team_nl_send_unicast, NULL);
2812 team_nl_team_put(team);
2817 static const struct genl_small_ops team_nl_ops[] = {
2819 .cmd = TEAM_CMD_NOOP,
2820 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2821 .doit = team_nl_cmd_noop,
2824 .cmd = TEAM_CMD_OPTIONS_SET,
2825 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2826 .doit = team_nl_cmd_options_set,
2827 .flags = GENL_ADMIN_PERM,
2830 .cmd = TEAM_CMD_OPTIONS_GET,
2831 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2832 .doit = team_nl_cmd_options_get,
2833 .flags = GENL_ADMIN_PERM,
2836 .cmd = TEAM_CMD_PORT_LIST_GET,
2837 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2838 .doit = team_nl_cmd_port_list_get,
2839 .flags = GENL_ADMIN_PERM,
2843 static const struct genl_multicast_group team_nl_mcgrps[] = {
2844 { .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, },
2847 static struct genl_family team_nl_family __ro_after_init = {
2848 .name = TEAM_GENL_NAME,
2849 .version = TEAM_GENL_VERSION,
2850 .maxattr = TEAM_ATTR_MAX,
2851 .policy = team_nl_policy,
2853 .module = THIS_MODULE,
2854 .small_ops = team_nl_ops,
2855 .n_small_ops = ARRAY_SIZE(team_nl_ops),
2856 .resv_start_op = TEAM_CMD_PORT_LIST_GET + 1,
2857 .mcgrps = team_nl_mcgrps,
2858 .n_mcgrps = ARRAY_SIZE(team_nl_mcgrps),
2861 static int team_nl_send_multicast(struct sk_buff *skb,
2862 struct team *team, u32 portid)
2864 return genlmsg_multicast_netns(&team_nl_family, dev_net(team->dev),
2865 skb, 0, 0, GFP_KERNEL);
2868 static int team_nl_send_event_options_get(struct team *team,
2869 struct list_head *sel_opt_inst_list)
2871 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2875 static int team_nl_send_event_port_get(struct team *team,
2876 struct team_port *port)
2878 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast,
2882 static int __init team_nl_init(void)
2884 return genl_register_family(&team_nl_family);
2887 static void team_nl_fini(void)
2889 genl_unregister_family(&team_nl_family);
2897 static void __team_options_change_check(struct team *team)
2900 struct team_option_inst *opt_inst;
2901 LIST_HEAD(sel_opt_inst_list);
2903 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2904 if (opt_inst->changed)
2905 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2907 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
2908 if (err && err != -ESRCH)
2909 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2913 /* rtnl lock is held */
2915 static void __team_port_change_send(struct team_port *port, bool linkup)
2919 port->changed = true;
2920 port->state.linkup = linkup;
2921 team_refresh_port_linkup(port);
2923 struct ethtool_link_ksettings ecmd;
2925 err = __ethtool_get_link_ksettings(port->dev, &ecmd);
2927 port->state.speed = ecmd.base.speed;
2928 port->state.duplex = ecmd.base.duplex;
2932 port->state.speed = 0;
2933 port->state.duplex = 0;
2936 err = team_nl_send_event_port_get(port->team, port);
2937 if (err && err != -ESRCH)
2938 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
2939 port->dev->name, err);
2943 static void __team_carrier_check(struct team *team)
2945 struct team_port *port;
2948 if (team->user_carrier_enabled)
2951 team_linkup = false;
2952 list_for_each_entry(port, &team->port_list, list) {
2960 netif_carrier_on(team->dev);
2962 netif_carrier_off(team->dev);
2965 static void __team_port_change_check(struct team_port *port, bool linkup)
2967 if (port->state.linkup != linkup)
2968 __team_port_change_send(port, linkup);
2969 __team_carrier_check(port->team);
2972 static void __team_port_change_port_added(struct team_port *port, bool linkup)
2974 __team_port_change_send(port, linkup);
2975 __team_carrier_check(port->team);
2978 static void __team_port_change_port_removed(struct team_port *port)
2980 port->removed = true;
2981 __team_port_change_send(port, false);
2982 __team_carrier_check(port->team);
2985 static void team_port_change_check(struct team_port *port, bool linkup)
2987 struct team *team = port->team;
2989 mutex_lock(&team->lock);
2990 __team_port_change_check(port, linkup);
2991 mutex_unlock(&team->lock);
2995 /************************************
2996 * Net device notifier event handler
2997 ************************************/
2999 static int team_device_event(struct notifier_block *unused,
3000 unsigned long event, void *ptr)
3002 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
3003 struct team_port *port;
3005 port = team_port_get_rtnl(dev);
3011 if (netif_oper_up(dev))
3012 team_port_change_check(port, true);
3015 team_port_change_check(port, false);
3018 if (netif_running(port->dev))
3019 team_port_change_check(port,
3020 !!netif_oper_up(port->dev));
3022 case NETDEV_UNREGISTER:
3023 team_del_slave(port->team->dev, dev);
3025 case NETDEV_FEAT_CHANGE:
3026 if (!port->team->notifier_ctx) {
3027 port->team->notifier_ctx = true;
3028 team_compute_features(port->team);
3029 port->team->notifier_ctx = false;
3032 case NETDEV_PRECHANGEMTU:
3033 /* Forbid to change mtu of underlaying device */
3034 if (!port->team->port_mtu_change_allowed)
3037 case NETDEV_PRE_TYPE_CHANGE:
3038 /* Forbid to change type of underlaying device */
3040 case NETDEV_RESEND_IGMP:
3041 /* Propagate to master device */
3042 call_netdevice_notifiers(event, port->team->dev);
3048 static struct notifier_block team_notifier_block __read_mostly = {
3049 .notifier_call = team_device_event,
3053 /***********************
3054 * Module init and exit
3055 ***********************/
3057 static int __init team_module_init(void)
3061 register_netdevice_notifier(&team_notifier_block);
3063 err = rtnl_link_register(&team_link_ops);
3067 err = team_nl_init();
3074 rtnl_link_unregister(&team_link_ops);
3077 unregister_netdevice_notifier(&team_notifier_block);
3082 static void __exit team_module_exit(void)
3085 rtnl_link_unregister(&team_link_ops);
3086 unregister_netdevice_notifier(&team_notifier_block);
3089 module_init(team_module_init);
3090 module_exit(team_module_exit);
3092 MODULE_LICENSE("GPL v2");
3093 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
3094 MODULE_DESCRIPTION("Ethernet team device driver");
3095 MODULE_ALIAS_RTNL_LINK(DRV_NAME);