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 <linux/if_team.h>
33 #define DRV_NAME "team"
40 #define team_port_exists(dev) (dev->priv_flags & IFF_TEAM_PORT)
42 static struct team_port *team_port_get_rcu(const struct net_device *dev)
44 struct team_port *port = rcu_dereference(dev->rx_handler_data);
46 return team_port_exists(dev) ? port : NULL;
49 static struct team_port *team_port_get_rtnl(const struct net_device *dev)
51 struct team_port *port = rtnl_dereference(dev->rx_handler_data);
53 return team_port_exists(dev) ? port : NULL;
57 * Since the ability to change mac address for open port device is tested in
58 * team_port_add, this function can be called without control of return value
60 static int __set_port_mac(struct net_device *port_dev,
61 const unsigned char *dev_addr)
65 memcpy(addr.sa_data, dev_addr, ETH_ALEN);
66 addr.sa_family = ARPHRD_ETHER;
67 return dev_set_mac_address(port_dev, &addr);
70 static int team_port_set_orig_mac(struct team_port *port)
72 return __set_port_mac(port->dev, port->orig.dev_addr);
75 int team_port_set_team_mac(struct team_port *port)
77 return __set_port_mac(port->dev, port->team->dev->dev_addr);
79 EXPORT_SYMBOL(team_port_set_team_mac);
81 static void team_refresh_port_linkup(struct team_port *port)
83 port->linkup = port->user.linkup_enabled ? port->user.linkup :
92 struct team_option_inst { /* One for each option instance */
93 struct list_head list;
94 struct list_head tmp_list;
95 struct team_option *option;
96 struct team_option_inst_info info;
101 static struct team_option *__team_find_option(struct team *team,
102 const char *opt_name)
104 struct team_option *option;
106 list_for_each_entry(option, &team->option_list, list) {
107 if (strcmp(option->name, opt_name) == 0)
113 static void __team_option_inst_del(struct team_option_inst *opt_inst)
115 list_del(&opt_inst->list);
119 static void __team_option_inst_del_option(struct team *team,
120 struct team_option *option)
122 struct team_option_inst *opt_inst, *tmp;
124 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
125 if (opt_inst->option == option)
126 __team_option_inst_del(opt_inst);
130 static int __team_option_inst_add(struct team *team, struct team_option *option,
131 struct team_port *port)
133 struct team_option_inst *opt_inst;
134 unsigned int array_size;
138 array_size = option->array_size;
140 array_size = 1; /* No array but still need one instance */
142 for (i = 0; i < array_size; i++) {
143 opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL);
146 opt_inst->option = option;
147 opt_inst->info.port = port;
148 opt_inst->info.array_index = i;
149 opt_inst->changed = true;
150 opt_inst->removed = false;
151 list_add_tail(&opt_inst->list, &team->option_inst_list);
153 err = option->init(team, &opt_inst->info);
162 static int __team_option_inst_add_option(struct team *team,
163 struct team_option *option)
165 struct team_port *port;
168 if (!option->per_port) {
169 err = __team_option_inst_add(team, option, NULL);
171 goto inst_del_option;
174 list_for_each_entry(port, &team->port_list, list) {
175 err = __team_option_inst_add(team, option, port);
177 goto inst_del_option;
182 __team_option_inst_del_option(team, option);
186 static void __team_option_inst_mark_removed_option(struct team *team,
187 struct team_option *option)
189 struct team_option_inst *opt_inst;
191 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
192 if (opt_inst->option == option) {
193 opt_inst->changed = true;
194 opt_inst->removed = true;
199 static void __team_option_inst_del_port(struct team *team,
200 struct team_port *port)
202 struct team_option_inst *opt_inst, *tmp;
204 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
205 if (opt_inst->option->per_port &&
206 opt_inst->info.port == port)
207 __team_option_inst_del(opt_inst);
211 static int __team_option_inst_add_port(struct team *team,
212 struct team_port *port)
214 struct team_option *option;
217 list_for_each_entry(option, &team->option_list, list) {
218 if (!option->per_port)
220 err = __team_option_inst_add(team, option, port);
227 __team_option_inst_del_port(team, port);
231 static void __team_option_inst_mark_removed_port(struct team *team,
232 struct team_port *port)
234 struct team_option_inst *opt_inst;
236 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
237 if (opt_inst->info.port == port) {
238 opt_inst->changed = true;
239 opt_inst->removed = true;
244 static int __team_options_register(struct team *team,
245 const struct team_option *option,
249 struct team_option **dst_opts;
252 dst_opts = kzalloc(sizeof(struct team_option *) * option_count,
256 for (i = 0; i < option_count; i++, option++) {
257 if (__team_find_option(team, option->name)) {
261 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL);
268 for (i = 0; i < option_count; i++) {
269 err = __team_option_inst_add_option(team, dst_opts[i]);
272 list_add_tail(&dst_opts[i]->list, &team->option_list);
279 for (i--; i >= 0; i--)
280 __team_option_inst_del_option(team, dst_opts[i]);
282 i = option_count - 1;
284 for (i--; i >= 0; i--)
291 static void __team_options_mark_removed(struct team *team,
292 const struct team_option *option,
297 for (i = 0; i < option_count; i++, option++) {
298 struct team_option *del_opt;
300 del_opt = __team_find_option(team, option->name);
302 __team_option_inst_mark_removed_option(team, del_opt);
306 static void __team_options_unregister(struct team *team,
307 const struct team_option *option,
312 for (i = 0; i < option_count; i++, option++) {
313 struct team_option *del_opt;
315 del_opt = __team_find_option(team, option->name);
317 __team_option_inst_del_option(team, del_opt);
318 list_del(&del_opt->list);
324 static void __team_options_change_check(struct team *team);
326 int team_options_register(struct team *team,
327 const struct team_option *option,
332 err = __team_options_register(team, option, option_count);
335 __team_options_change_check(team);
338 EXPORT_SYMBOL(team_options_register);
340 void team_options_unregister(struct team *team,
341 const struct team_option *option,
344 __team_options_mark_removed(team, option, option_count);
345 __team_options_change_check(team);
346 __team_options_unregister(team, option, option_count);
348 EXPORT_SYMBOL(team_options_unregister);
350 static int team_option_get(struct team *team,
351 struct team_option_inst *opt_inst,
352 struct team_gsetter_ctx *ctx)
354 if (!opt_inst->option->getter)
356 return opt_inst->option->getter(team, ctx);
359 static int team_option_set(struct team *team,
360 struct team_option_inst *opt_inst,
361 struct team_gsetter_ctx *ctx)
363 if (!opt_inst->option->setter)
365 return opt_inst->option->setter(team, ctx);
368 void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info)
370 struct team_option_inst *opt_inst;
372 opt_inst = container_of(opt_inst_info, struct team_option_inst, info);
373 opt_inst->changed = true;
375 EXPORT_SYMBOL(team_option_inst_set_change);
377 void team_options_change_check(struct team *team)
379 __team_options_change_check(team);
381 EXPORT_SYMBOL(team_options_change_check);
388 static LIST_HEAD(mode_list);
389 static DEFINE_SPINLOCK(mode_list_lock);
391 struct team_mode_item {
392 struct list_head list;
393 const struct team_mode *mode;
396 static struct team_mode_item *__find_mode(const char *kind)
398 struct team_mode_item *mitem;
400 list_for_each_entry(mitem, &mode_list, list) {
401 if (strcmp(mitem->mode->kind, kind) == 0)
407 static bool is_good_mode_name(const char *name)
409 while (*name != '\0') {
410 if (!isalpha(*name) && !isdigit(*name) && *name != '_')
417 int team_mode_register(const struct team_mode *mode)
420 struct team_mode_item *mitem;
422 if (!is_good_mode_name(mode->kind) ||
423 mode->priv_size > TEAM_MODE_PRIV_SIZE)
426 mitem = kmalloc(sizeof(*mitem), GFP_KERNEL);
430 spin_lock(&mode_list_lock);
431 if (__find_mode(mode->kind)) {
437 list_add_tail(&mitem->list, &mode_list);
439 spin_unlock(&mode_list_lock);
442 EXPORT_SYMBOL(team_mode_register);
444 void team_mode_unregister(const struct team_mode *mode)
446 struct team_mode_item *mitem;
448 spin_lock(&mode_list_lock);
449 mitem = __find_mode(mode->kind);
451 list_del_init(&mitem->list);
454 spin_unlock(&mode_list_lock);
456 EXPORT_SYMBOL(team_mode_unregister);
458 static const struct team_mode *team_mode_get(const char *kind)
460 struct team_mode_item *mitem;
461 const struct team_mode *mode = NULL;
463 spin_lock(&mode_list_lock);
464 mitem = __find_mode(kind);
466 spin_unlock(&mode_list_lock);
467 request_module("team-mode-%s", kind);
468 spin_lock(&mode_list_lock);
469 mitem = __find_mode(kind);
473 if (!try_module_get(mode->owner))
477 spin_unlock(&mode_list_lock);
481 static void team_mode_put(const struct team_mode *mode)
483 module_put(mode->owner);
486 static bool team_dummy_transmit(struct team *team, struct sk_buff *skb)
488 dev_kfree_skb_any(skb);
492 rx_handler_result_t team_dummy_receive(struct team *team,
493 struct team_port *port,
496 return RX_HANDLER_ANOTHER;
499 static const struct team_mode __team_no_mode = {
503 static bool team_is_mode_set(struct team *team)
505 return team->mode != &__team_no_mode;
508 static void team_set_no_mode(struct team *team)
510 team->mode = &__team_no_mode;
513 static void __team_adjust_ops(struct team *team, int en_port_count)
516 * To avoid checks in rx/tx skb paths, ensure here that non-null and
517 * correct ops are always set.
520 if (!en_port_count || !team_is_mode_set(team) ||
521 !team->mode->ops->transmit)
522 team->ops.transmit = team_dummy_transmit;
524 team->ops.transmit = team->mode->ops->transmit;
526 if (!en_port_count || !team_is_mode_set(team) ||
527 !team->mode->ops->receive)
528 team->ops.receive = team_dummy_receive;
530 team->ops.receive = team->mode->ops->receive;
533 static void team_adjust_ops(struct team *team)
535 __team_adjust_ops(team, team->en_port_count);
539 * We can benefit from the fact that it's ensured no port is present
540 * at the time of mode change. Therefore no packets are in fly so there's no
541 * need to set mode operations in any special way.
543 static int __team_change_mode(struct team *team,
544 const struct team_mode *new_mode)
546 /* Check if mode was previously set and do cleanup if so */
547 if (team_is_mode_set(team)) {
548 void (*exit_op)(struct team *team) = team->ops.exit;
550 /* Clear ops area so no callback is called any longer */
551 memset(&team->ops, 0, sizeof(struct team_mode_ops));
552 team_adjust_ops(team);
556 team_mode_put(team->mode);
557 team_set_no_mode(team);
558 /* zero private data area */
559 memset(&team->mode_priv, 0,
560 sizeof(struct team) - offsetof(struct team, mode_priv));
566 if (new_mode->ops->init) {
569 err = new_mode->ops->init(team);
574 team->mode = new_mode;
575 memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops));
576 team_adjust_ops(team);
581 static int team_change_mode(struct team *team, const char *kind)
583 const struct team_mode *new_mode;
584 struct net_device *dev = team->dev;
587 if (!list_empty(&team->port_list)) {
588 netdev_err(dev, "No ports can be present during mode change\n");
592 if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) {
593 netdev_err(dev, "Unable to change to the same mode the team is in\n");
597 new_mode = team_mode_get(kind);
599 netdev_err(dev, "Mode \"%s\" not found\n", kind);
603 err = __team_change_mode(team, new_mode);
605 netdev_err(dev, "Failed to change to mode \"%s\"\n", kind);
606 team_mode_put(new_mode);
610 netdev_info(dev, "Mode changed to \"%s\"\n", kind);
615 /************************
616 * Rx path frame handler
617 ************************/
619 /* note: already called with rcu_read_lock */
620 static rx_handler_result_t team_handle_frame(struct sk_buff **pskb)
622 struct sk_buff *skb = *pskb;
623 struct team_port *port;
625 rx_handler_result_t res;
627 skb = skb_share_check(skb, GFP_ATOMIC);
629 return RX_HANDLER_CONSUMED;
633 port = team_port_get_rcu(skb->dev);
635 if (!team_port_enabled(port)) {
636 /* allow exact match delivery for disabled ports */
637 res = RX_HANDLER_EXACT;
639 res = team->ops.receive(team, port, skb);
641 if (res == RX_HANDLER_ANOTHER) {
642 struct team_pcpu_stats *pcpu_stats;
644 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
645 u64_stats_update_begin(&pcpu_stats->syncp);
646 pcpu_stats->rx_packets++;
647 pcpu_stats->rx_bytes += skb->len;
648 if (skb->pkt_type == PACKET_MULTICAST)
649 pcpu_stats->rx_multicast++;
650 u64_stats_update_end(&pcpu_stats->syncp);
652 skb->dev = team->dev;
654 this_cpu_inc(team->pcpu_stats->rx_dropped);
665 static bool team_port_find(const struct team *team,
666 const struct team_port *port)
668 struct team_port *cur;
670 list_for_each_entry(cur, &team->port_list, list)
677 * Enable/disable port by adding to enabled port hashlist and setting
678 * port->index (Might be racy so reader could see incorrect ifindex when
679 * processing a flying packet, but that is not a problem). Write guarded
682 static void team_port_enable(struct team *team,
683 struct team_port *port)
685 if (team_port_enabled(port))
687 port->index = team->en_port_count++;
688 hlist_add_head_rcu(&port->hlist,
689 team_port_index_hash(team, port->index));
690 team_adjust_ops(team);
691 if (team->ops.port_enabled)
692 team->ops.port_enabled(team, port);
695 static void __reconstruct_port_hlist(struct team *team, int rm_index)
698 struct team_port *port;
700 for (i = rm_index + 1; i < team->en_port_count; i++) {
701 port = team_get_port_by_index(team, i);
702 hlist_del_rcu(&port->hlist);
704 hlist_add_head_rcu(&port->hlist,
705 team_port_index_hash(team, port->index));
709 static void team_port_disable(struct team *team,
710 struct team_port *port)
712 if (!team_port_enabled(port))
714 if (team->ops.port_disabled)
715 team->ops.port_disabled(team, port);
716 hlist_del_rcu(&port->hlist);
717 __reconstruct_port_hlist(team, port->index);
719 __team_adjust_ops(team, team->en_port_count - 1);
721 * Wait until readers see adjusted ops. This ensures that
722 * readers never see team->en_port_count == 0
725 team->en_port_count--;
728 #define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \
729 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
730 NETIF_F_HIGHDMA | NETIF_F_LRO)
732 static void __team_compute_features(struct team *team)
734 struct team_port *port;
735 u32 vlan_features = TEAM_VLAN_FEATURES;
736 unsigned short max_hard_header_len = ETH_HLEN;
737 unsigned int flags, dst_release_flag = IFF_XMIT_DST_RELEASE;
739 list_for_each_entry(port, &team->port_list, list) {
740 vlan_features = netdev_increment_features(vlan_features,
741 port->dev->vlan_features,
744 dst_release_flag &= port->dev->priv_flags;
745 if (port->dev->hard_header_len > max_hard_header_len)
746 max_hard_header_len = port->dev->hard_header_len;
749 team->dev->vlan_features = vlan_features;
750 team->dev->hard_header_len = max_hard_header_len;
752 flags = team->dev->priv_flags & ~IFF_XMIT_DST_RELEASE;
753 team->dev->priv_flags = flags | dst_release_flag;
755 netdev_change_features(team->dev);
758 static void team_compute_features(struct team *team)
760 mutex_lock(&team->lock);
761 __team_compute_features(team);
762 mutex_unlock(&team->lock);
765 static int team_port_enter(struct team *team, struct team_port *port)
770 port->dev->priv_flags |= IFF_TEAM_PORT;
771 if (team->ops.port_enter) {
772 err = team->ops.port_enter(team, port);
774 netdev_err(team->dev, "Device %s failed to enter team mode\n",
783 port->dev->priv_flags &= ~IFF_TEAM_PORT;
789 static void team_port_leave(struct team *team, struct team_port *port)
791 if (team->ops.port_leave)
792 team->ops.port_leave(team, port);
793 port->dev->priv_flags &= ~IFF_TEAM_PORT;
797 #ifdef CONFIG_NET_POLL_CONTROLLER
798 static int team_port_enable_netpoll(struct team *team, struct team_port *port,
804 np = kzalloc(sizeof(*np), gfp);
808 err = __netpoll_setup(np, port->dev, gfp);
817 static void team_port_disable_netpoll(struct team_port *port)
819 struct netpoll *np = port->np;
825 /* Wait for transmitting packets to finish before freeing. */
826 synchronize_rcu_bh();
827 __netpoll_cleanup(np);
831 static struct netpoll_info *team_netpoll_info(struct team *team)
833 return team->dev->npinfo;
837 static int team_port_enable_netpoll(struct team *team, struct team_port *port,
842 static void team_port_disable_netpoll(struct team_port *port)
845 static struct netpoll_info *team_netpoll_info(struct team *team)
851 static void __team_port_change_check(struct team_port *port, bool linkup);
853 static int team_port_add(struct team *team, struct net_device *port_dev)
855 struct net_device *dev = team->dev;
856 struct team_port *port;
857 char *portname = port_dev->name;
860 if (port_dev->flags & IFF_LOOPBACK ||
861 port_dev->type != ARPHRD_ETHER) {
862 netdev_err(dev, "Device %s is of an unsupported type\n",
867 if (team_port_exists(port_dev)) {
868 netdev_err(dev, "Device %s is already a port "
869 "of a team device\n", portname);
873 if (port_dev->flags & IFF_UP) {
874 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
879 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size,
884 port->dev = port_dev;
887 port->orig.mtu = port_dev->mtu;
888 err = dev_set_mtu(port_dev, dev->mtu);
890 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
894 memcpy(port->orig.dev_addr, port_dev->dev_addr, ETH_ALEN);
896 err = team_port_enter(team, port);
898 netdev_err(dev, "Device %s failed to enter team mode\n",
903 err = dev_open(port_dev);
905 netdev_dbg(dev, "Device %s opening failed\n",
910 err = vlan_vids_add_by_dev(port_dev, dev);
912 netdev_err(dev, "Failed to add vlan ids to device %s\n",
917 if (team_netpoll_info(team)) {
918 err = team_port_enable_netpoll(team, port, GFP_KERNEL);
920 netdev_err(dev, "Failed to enable netpoll on device %s\n",
922 goto err_enable_netpoll;
926 err = netdev_set_master(port_dev, dev);
928 netdev_err(dev, "Device %s failed to set master\n", portname);
932 err = netdev_rx_handler_register(port_dev, team_handle_frame,
935 netdev_err(dev, "Device %s failed to register rx_handler\n",
937 goto err_handler_register;
940 err = __team_option_inst_add_port(team, port);
942 netdev_err(dev, "Device %s failed to add per-port options\n",
944 goto err_option_port_add;
948 team_port_enable(team, port);
949 list_add_tail_rcu(&port->list, &team->port_list);
950 __team_compute_features(team);
951 __team_port_change_check(port, !!netif_carrier_ok(port_dev));
952 __team_options_change_check(team);
954 netdev_info(dev, "Port device %s added\n", portname);
959 netdev_rx_handler_unregister(port_dev);
961 err_handler_register:
962 netdev_set_master(port_dev, NULL);
965 team_port_disable_netpoll(port);
968 vlan_vids_del_by_dev(port_dev, dev);
974 team_port_leave(team, port);
975 team_port_set_orig_mac(port);
978 dev_set_mtu(port_dev, port->orig.mtu);
986 static int team_port_del(struct team *team, struct net_device *port_dev)
988 struct net_device *dev = team->dev;
989 struct team_port *port;
990 char *portname = port_dev->name;
992 port = team_port_get_rtnl(port_dev);
993 if (!port || !team_port_find(team, port)) {
994 netdev_err(dev, "Device %s does not act as a port of this team\n",
999 __team_option_inst_mark_removed_port(team, port);
1000 __team_options_change_check(team);
1001 __team_option_inst_del_port(team, port);
1002 port->removed = true;
1003 __team_port_change_check(port, false);
1004 team_port_disable(team, port);
1005 list_del_rcu(&port->list);
1006 netdev_rx_handler_unregister(port_dev);
1007 netdev_set_master(port_dev, NULL);
1008 team_port_disable_netpoll(port);
1009 vlan_vids_del_by_dev(port_dev, dev);
1010 dev_close(port_dev);
1011 team_port_leave(team, port);
1012 team_port_set_orig_mac(port);
1013 dev_set_mtu(port_dev, port->orig.mtu);
1016 netdev_info(dev, "Port device %s removed\n", portname);
1017 __team_compute_features(team);
1027 static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
1029 ctx->data.str_val = team->mode->kind;
1033 static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
1035 return team_change_mode(team, ctx->data.str_val);
1038 static int team_port_en_option_get(struct team *team,
1039 struct team_gsetter_ctx *ctx)
1041 struct team_port *port = ctx->info->port;
1043 ctx->data.bool_val = team_port_enabled(port);
1047 static int team_port_en_option_set(struct team *team,
1048 struct team_gsetter_ctx *ctx)
1050 struct team_port *port = ctx->info->port;
1052 if (ctx->data.bool_val)
1053 team_port_enable(team, port);
1055 team_port_disable(team, port);
1059 static int team_user_linkup_option_get(struct team *team,
1060 struct team_gsetter_ctx *ctx)
1062 struct team_port *port = ctx->info->port;
1064 ctx->data.bool_val = port->user.linkup;
1068 static int team_user_linkup_option_set(struct team *team,
1069 struct team_gsetter_ctx *ctx)
1071 struct team_port *port = ctx->info->port;
1073 port->user.linkup = ctx->data.bool_val;
1074 team_refresh_port_linkup(port);
1078 static int team_user_linkup_en_option_get(struct team *team,
1079 struct team_gsetter_ctx *ctx)
1081 struct team_port *port = ctx->info->port;
1083 ctx->data.bool_val = port->user.linkup_enabled;
1087 static int team_user_linkup_en_option_set(struct team *team,
1088 struct team_gsetter_ctx *ctx)
1090 struct team_port *port = ctx->info->port;
1092 port->user.linkup_enabled = ctx->data.bool_val;
1093 team_refresh_port_linkup(port);
1097 static const struct team_option team_options[] = {
1100 .type = TEAM_OPTION_TYPE_STRING,
1101 .getter = team_mode_option_get,
1102 .setter = team_mode_option_set,
1106 .type = TEAM_OPTION_TYPE_BOOL,
1108 .getter = team_port_en_option_get,
1109 .setter = team_port_en_option_set,
1112 .name = "user_linkup",
1113 .type = TEAM_OPTION_TYPE_BOOL,
1115 .getter = team_user_linkup_option_get,
1116 .setter = team_user_linkup_option_set,
1119 .name = "user_linkup_enabled",
1120 .type = TEAM_OPTION_TYPE_BOOL,
1122 .getter = team_user_linkup_en_option_get,
1123 .setter = team_user_linkup_en_option_set,
1127 static struct lock_class_key team_netdev_xmit_lock_key;
1128 static struct lock_class_key team_netdev_addr_lock_key;
1130 static void team_set_lockdep_class_one(struct net_device *dev,
1131 struct netdev_queue *txq,
1134 lockdep_set_class(&txq->_xmit_lock, &team_netdev_xmit_lock_key);
1137 static void team_set_lockdep_class(struct net_device *dev)
1139 lockdep_set_class(&dev->addr_list_lock, &team_netdev_addr_lock_key);
1140 netdev_for_each_tx_queue(dev, team_set_lockdep_class_one, NULL);
1143 static int team_init(struct net_device *dev)
1145 struct team *team = netdev_priv(dev);
1150 mutex_init(&team->lock);
1151 team_set_no_mode(team);
1153 team->pcpu_stats = alloc_percpu(struct team_pcpu_stats);
1154 if (!team->pcpu_stats)
1157 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
1158 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
1159 INIT_LIST_HEAD(&team->port_list);
1161 team_adjust_ops(team);
1163 INIT_LIST_HEAD(&team->option_list);
1164 INIT_LIST_HEAD(&team->option_inst_list);
1165 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1167 goto err_options_register;
1168 netif_carrier_off(dev);
1170 team_set_lockdep_class(dev);
1174 err_options_register:
1175 free_percpu(team->pcpu_stats);
1180 static void team_uninit(struct net_device *dev)
1182 struct team *team = netdev_priv(dev);
1183 struct team_port *port;
1184 struct team_port *tmp;
1186 mutex_lock(&team->lock);
1187 list_for_each_entry_safe(port, tmp, &team->port_list, list)
1188 team_port_del(team, port->dev);
1190 __team_change_mode(team, NULL); /* cleanup */
1191 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
1192 mutex_unlock(&team->lock);
1195 static void team_destructor(struct net_device *dev)
1197 struct team *team = netdev_priv(dev);
1199 free_percpu(team->pcpu_stats);
1203 static int team_open(struct net_device *dev)
1205 netif_carrier_on(dev);
1209 static int team_close(struct net_device *dev)
1211 netif_carrier_off(dev);
1216 * note: already called with rcu_read_lock
1218 static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1220 struct team *team = netdev_priv(dev);
1221 bool tx_success = false;
1222 unsigned int len = skb->len;
1224 tx_success = team->ops.transmit(team, skb);
1226 struct team_pcpu_stats *pcpu_stats;
1228 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1229 u64_stats_update_begin(&pcpu_stats->syncp);
1230 pcpu_stats->tx_packets++;
1231 pcpu_stats->tx_bytes += len;
1232 u64_stats_update_end(&pcpu_stats->syncp);
1234 this_cpu_inc(team->pcpu_stats->tx_dropped);
1237 return NETDEV_TX_OK;
1240 static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb)
1243 * This helper function exists to help dev_pick_tx get the correct
1244 * destination queue. Using a helper function skips a call to
1245 * skb_tx_hash and will put the skbs in the queue we expect on their
1246 * way down to the team driver.
1248 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1251 * Save the original txq to restore before passing to the driver
1253 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1255 if (unlikely(txq >= dev->real_num_tx_queues)) {
1257 txq -= dev->real_num_tx_queues;
1258 } while (txq >= dev->real_num_tx_queues);
1263 static void team_change_rx_flags(struct net_device *dev, int change)
1265 struct team *team = netdev_priv(dev);
1266 struct team_port *port;
1270 list_for_each_entry_rcu(port, &team->port_list, list) {
1271 if (change & IFF_PROMISC) {
1272 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1273 dev_set_promiscuity(port->dev, inc);
1275 if (change & IFF_ALLMULTI) {
1276 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1277 dev_set_allmulti(port->dev, inc);
1283 static void team_set_rx_mode(struct net_device *dev)
1285 struct team *team = netdev_priv(dev);
1286 struct team_port *port;
1289 list_for_each_entry_rcu(port, &team->port_list, list) {
1290 dev_uc_sync(port->dev, dev);
1291 dev_mc_sync(port->dev, dev);
1296 static int team_set_mac_address(struct net_device *dev, void *p)
1298 struct team *team = netdev_priv(dev);
1299 struct team_port *port;
1302 err = eth_mac_addr(dev, p);
1306 list_for_each_entry_rcu(port, &team->port_list, list)
1307 if (team->ops.port_change_mac)
1308 team->ops.port_change_mac(team, port);
1313 static int team_change_mtu(struct net_device *dev, int new_mtu)
1315 struct team *team = netdev_priv(dev);
1316 struct team_port *port;
1320 * Alhough this is reader, it's guarded by team lock. It's not possible
1321 * to traverse list in reverse under rcu_read_lock
1323 mutex_lock(&team->lock);
1324 list_for_each_entry(port, &team->port_list, list) {
1325 err = dev_set_mtu(port->dev, new_mtu);
1327 netdev_err(dev, "Device %s failed to change mtu",
1332 mutex_unlock(&team->lock);
1339 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1340 dev_set_mtu(port->dev, dev->mtu);
1341 mutex_unlock(&team->lock);
1346 static struct rtnl_link_stats64 *
1347 team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1349 struct team *team = netdev_priv(dev);
1350 struct team_pcpu_stats *p;
1351 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1352 u32 rx_dropped = 0, tx_dropped = 0;
1356 for_each_possible_cpu(i) {
1357 p = per_cpu_ptr(team->pcpu_stats, i);
1359 start = u64_stats_fetch_begin_bh(&p->syncp);
1360 rx_packets = p->rx_packets;
1361 rx_bytes = p->rx_bytes;
1362 rx_multicast = p->rx_multicast;
1363 tx_packets = p->tx_packets;
1364 tx_bytes = p->tx_bytes;
1365 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
1367 stats->rx_packets += rx_packets;
1368 stats->rx_bytes += rx_bytes;
1369 stats->multicast += rx_multicast;
1370 stats->tx_packets += tx_packets;
1371 stats->tx_bytes += tx_bytes;
1373 * rx_dropped & tx_dropped are u32, updated
1374 * without syncp protection.
1376 rx_dropped += p->rx_dropped;
1377 tx_dropped += p->tx_dropped;
1379 stats->rx_dropped = rx_dropped;
1380 stats->tx_dropped = tx_dropped;
1384 static int team_vlan_rx_add_vid(struct net_device *dev, uint16_t vid)
1386 struct team *team = netdev_priv(dev);
1387 struct team_port *port;
1391 * Alhough this is reader, it's guarded by team lock. It's not possible
1392 * to traverse list in reverse under rcu_read_lock
1394 mutex_lock(&team->lock);
1395 list_for_each_entry(port, &team->port_list, list) {
1396 err = vlan_vid_add(port->dev, vid);
1400 mutex_unlock(&team->lock);
1405 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1406 vlan_vid_del(port->dev, vid);
1407 mutex_unlock(&team->lock);
1412 static int team_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid)
1414 struct team *team = netdev_priv(dev);
1415 struct team_port *port;
1418 list_for_each_entry_rcu(port, &team->port_list, list)
1419 vlan_vid_del(port->dev, vid);
1425 #ifdef CONFIG_NET_POLL_CONTROLLER
1426 static void team_poll_controller(struct net_device *dev)
1430 static void __team_netpoll_cleanup(struct team *team)
1432 struct team_port *port;
1434 list_for_each_entry(port, &team->port_list, list)
1435 team_port_disable_netpoll(port);
1438 static void team_netpoll_cleanup(struct net_device *dev)
1440 struct team *team = netdev_priv(dev);
1442 mutex_lock(&team->lock);
1443 __team_netpoll_cleanup(team);
1444 mutex_unlock(&team->lock);
1447 static int team_netpoll_setup(struct net_device *dev,
1448 struct netpoll_info *npifo, gfp_t gfp)
1450 struct team *team = netdev_priv(dev);
1451 struct team_port *port;
1454 mutex_lock(&team->lock);
1455 list_for_each_entry(port, &team->port_list, list) {
1456 err = team_port_enable_netpoll(team, port, gfp);
1458 __team_netpoll_cleanup(team);
1462 mutex_unlock(&team->lock);
1467 static int team_add_slave(struct net_device *dev, struct net_device *port_dev)
1469 struct team *team = netdev_priv(dev);
1472 mutex_lock(&team->lock);
1473 err = team_port_add(team, port_dev);
1474 mutex_unlock(&team->lock);
1478 static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1480 struct team *team = netdev_priv(dev);
1483 mutex_lock(&team->lock);
1484 err = team_port_del(team, port_dev);
1485 mutex_unlock(&team->lock);
1489 static netdev_features_t team_fix_features(struct net_device *dev,
1490 netdev_features_t features)
1492 struct team_port *port;
1493 struct team *team = netdev_priv(dev);
1494 netdev_features_t mask;
1497 features &= ~NETIF_F_ONE_FOR_ALL;
1498 features |= NETIF_F_ALL_FOR_ALL;
1501 list_for_each_entry_rcu(port, &team->port_list, list) {
1502 features = netdev_increment_features(features,
1503 port->dev->features,
1510 static const struct net_device_ops team_netdev_ops = {
1511 .ndo_init = team_init,
1512 .ndo_uninit = team_uninit,
1513 .ndo_open = team_open,
1514 .ndo_stop = team_close,
1515 .ndo_start_xmit = team_xmit,
1516 .ndo_select_queue = team_select_queue,
1517 .ndo_change_rx_flags = team_change_rx_flags,
1518 .ndo_set_rx_mode = team_set_rx_mode,
1519 .ndo_set_mac_address = team_set_mac_address,
1520 .ndo_change_mtu = team_change_mtu,
1521 .ndo_get_stats64 = team_get_stats64,
1522 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
1523 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
1524 #ifdef CONFIG_NET_POLL_CONTROLLER
1525 .ndo_poll_controller = team_poll_controller,
1526 .ndo_netpoll_setup = team_netpoll_setup,
1527 .ndo_netpoll_cleanup = team_netpoll_cleanup,
1529 .ndo_add_slave = team_add_slave,
1530 .ndo_del_slave = team_del_slave,
1531 .ndo_fix_features = team_fix_features,
1535 /***********************
1536 * rt netlink interface
1537 ***********************/
1539 static void team_setup(struct net_device *dev)
1543 dev->netdev_ops = &team_netdev_ops;
1544 dev->destructor = team_destructor;
1545 dev->tx_queue_len = 0;
1546 dev->flags |= IFF_MULTICAST;
1547 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
1550 * Indicate we support unicast address filtering. That way core won't
1551 * bring us to promisc mode in case a unicast addr is added.
1552 * Let this up to underlay drivers.
1554 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
1556 dev->features |= NETIF_F_LLTX;
1557 dev->features |= NETIF_F_GRO;
1558 dev->hw_features = NETIF_F_HW_VLAN_TX |
1559 NETIF_F_HW_VLAN_RX |
1560 NETIF_F_HW_VLAN_FILTER;
1562 dev->features |= dev->hw_features;
1565 static int team_newlink(struct net *src_net, struct net_device *dev,
1566 struct nlattr *tb[], struct nlattr *data[])
1570 if (tb[IFLA_ADDRESS] == NULL)
1571 eth_hw_addr_random(dev);
1573 err = register_netdevice(dev);
1580 static int team_validate(struct nlattr *tb[], struct nlattr *data[])
1582 if (tb[IFLA_ADDRESS]) {
1583 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
1585 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
1586 return -EADDRNOTAVAIL;
1591 static unsigned int team_get_num_tx_queues(void)
1593 return TEAM_DEFAULT_NUM_TX_QUEUES;
1596 static unsigned int team_get_num_rx_queues(void)
1598 return TEAM_DEFAULT_NUM_RX_QUEUES;
1601 static struct rtnl_link_ops team_link_ops __read_mostly = {
1603 .priv_size = sizeof(struct team),
1604 .setup = team_setup,
1605 .newlink = team_newlink,
1606 .validate = team_validate,
1607 .get_num_tx_queues = team_get_num_tx_queues,
1608 .get_num_rx_queues = team_get_num_rx_queues,
1612 /***********************************
1613 * Generic netlink custom interface
1614 ***********************************/
1616 static struct genl_family team_nl_family = {
1617 .id = GENL_ID_GENERATE,
1618 .name = TEAM_GENL_NAME,
1619 .version = TEAM_GENL_VERSION,
1620 .maxattr = TEAM_ATTR_MAX,
1624 static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
1625 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
1626 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
1627 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
1628 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
1631 static const struct nla_policy
1632 team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
1633 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
1634 [TEAM_ATTR_OPTION_NAME] = {
1636 .len = TEAM_STRING_MAX_LEN,
1638 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
1639 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
1640 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
1643 static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
1645 struct sk_buff *msg;
1649 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1653 hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq,
1654 &team_nl_family, 0, TEAM_CMD_NOOP);
1660 genlmsg_end(msg, hdr);
1662 return genlmsg_unicast(genl_info_net(info), msg, info->snd_pid);
1671 * Netlink cmd functions should be locked by following two functions.
1672 * Since dev gets held here, that ensures dev won't disappear in between.
1674 static struct team *team_nl_team_get(struct genl_info *info)
1676 struct net *net = genl_info_net(info);
1678 struct net_device *dev;
1681 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
1684 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
1685 dev = dev_get_by_index(net, ifindex);
1686 if (!dev || dev->netdev_ops != &team_netdev_ops) {
1692 team = netdev_priv(dev);
1693 mutex_lock(&team->lock);
1697 static void team_nl_team_put(struct team *team)
1699 mutex_unlock(&team->lock);
1703 static int team_nl_send_generic(struct genl_info *info, struct team *team,
1704 int (*fill_func)(struct sk_buff *skb,
1705 struct genl_info *info,
1706 int flags, struct team *team))
1708 struct sk_buff *skb;
1711 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1715 err = fill_func(skb, info, NLM_F_ACK, team);
1719 err = genlmsg_unicast(genl_info_net(info), skb, info->snd_pid);
1727 typedef int team_nl_send_func_t(struct sk_buff *skb,
1728 struct team *team, u32 pid);
1730 static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 pid)
1732 return genlmsg_unicast(dev_net(team->dev), skb, pid);
1735 static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
1736 struct team_option_inst *opt_inst)
1738 struct nlattr *option_item;
1739 struct team_option *option = opt_inst->option;
1740 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
1741 struct team_gsetter_ctx ctx;
1744 ctx.info = opt_inst_info;
1745 err = team_option_get(team, opt_inst, &ctx);
1749 option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
1753 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
1755 if (opt_inst_info->port &&
1756 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
1757 opt_inst_info->port->dev->ifindex))
1759 if (opt_inst->option->array_size &&
1760 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
1761 opt_inst_info->array_index))
1764 switch (option->type) {
1765 case TEAM_OPTION_TYPE_U32:
1766 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
1768 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
1771 case TEAM_OPTION_TYPE_STRING:
1772 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
1774 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
1778 case TEAM_OPTION_TYPE_BINARY:
1779 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
1781 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
1782 ctx.data.bin_val.ptr))
1785 case TEAM_OPTION_TYPE_BOOL:
1786 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
1788 if (ctx.data.bool_val &&
1789 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
1795 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
1797 if (opt_inst->changed) {
1798 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
1800 opt_inst->changed = false;
1802 nla_nest_end(skb, option_item);
1806 nla_nest_cancel(skb, option_item);
1810 static int __send_and_alloc_skb(struct sk_buff **pskb,
1811 struct team *team, u32 pid,
1812 team_nl_send_func_t *send_func)
1817 err = send_func(*pskb, team, pid);
1821 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
1827 static int team_nl_send_options_get(struct team *team, u32 pid, u32 seq,
1828 int flags, team_nl_send_func_t *send_func,
1829 struct list_head *sel_opt_inst_list)
1831 struct nlattr *option_list;
1832 struct nlmsghdr *nlh;
1834 struct team_option_inst *opt_inst;
1836 struct sk_buff *skb = NULL;
1840 opt_inst = list_first_entry(sel_opt_inst_list,
1841 struct team_option_inst, tmp_list);
1844 err = __send_and_alloc_skb(&skb, team, pid, send_func);
1848 hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags | NLM_F_MULTI,
1849 TEAM_CMD_OPTIONS_GET);
1851 return PTR_ERR(hdr);
1853 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
1854 goto nla_put_failure;
1855 option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION);
1857 goto nla_put_failure;
1861 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
1862 err = team_nl_fill_one_option_get(skb, team, opt_inst);
1864 if (err == -EMSGSIZE) {
1875 nla_nest_end(skb, option_list);
1876 genlmsg_end(skb, hdr);
1881 nlh = nlmsg_put(skb, pid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
1883 err = __send_and_alloc_skb(&skb, team, pid, send_func);
1889 return send_func(skb, team, pid);
1894 genlmsg_cancel(skb, hdr);
1899 static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
1902 struct team_option_inst *opt_inst;
1904 LIST_HEAD(sel_opt_inst_list);
1906 team = team_nl_team_get(info);
1910 list_for_each_entry(opt_inst, &team->option_inst_list, list)
1911 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
1912 err = team_nl_send_options_get(team, info->snd_pid, info->snd_seq,
1913 NLM_F_ACK, team_nl_send_unicast,
1914 &sel_opt_inst_list);
1916 team_nl_team_put(team);
1921 static int team_nl_send_event_options_get(struct team *team,
1922 struct list_head *sel_opt_inst_list);
1924 static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
1929 struct nlattr *nl_option;
1930 LIST_HEAD(opt_inst_list);
1932 team = team_nl_team_get(info);
1937 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
1942 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
1943 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
1944 struct nlattr *attr;
1945 struct nlattr *attr_data;
1946 enum team_option_type opt_type;
1947 int opt_port_ifindex = 0; /* != 0 for per-port options */
1948 u32 opt_array_index = 0;
1949 bool opt_is_array = false;
1950 struct team_option_inst *opt_inst;
1952 bool opt_found = false;
1954 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
1958 err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX,
1959 nl_option, team_nl_option_policy);
1962 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
1963 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
1967 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
1969 opt_type = TEAM_OPTION_TYPE_U32;
1972 opt_type = TEAM_OPTION_TYPE_STRING;
1975 opt_type = TEAM_OPTION_TYPE_BINARY;
1978 opt_type = TEAM_OPTION_TYPE_BOOL;
1984 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
1985 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
1990 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
1991 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
1993 opt_port_ifindex = nla_get_u32(attr);
1995 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
1997 opt_is_array = true;
1998 opt_array_index = nla_get_u32(attr);
2001 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2002 struct team_option *option = opt_inst->option;
2003 struct team_gsetter_ctx ctx;
2004 struct team_option_inst_info *opt_inst_info;
2007 opt_inst_info = &opt_inst->info;
2008 tmp_ifindex = opt_inst_info->port ?
2009 opt_inst_info->port->dev->ifindex : 0;
2010 if (option->type != opt_type ||
2011 strcmp(option->name, opt_name) ||
2012 tmp_ifindex != opt_port_ifindex ||
2013 (option->array_size && !opt_is_array) ||
2014 opt_inst_info->array_index != opt_array_index)
2017 ctx.info = opt_inst_info;
2019 case TEAM_OPTION_TYPE_U32:
2020 ctx.data.u32_val = nla_get_u32(attr_data);
2022 case TEAM_OPTION_TYPE_STRING:
2023 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2027 ctx.data.str_val = nla_data(attr_data);
2029 case TEAM_OPTION_TYPE_BINARY:
2030 ctx.data.bin_val.len = nla_len(attr_data);
2031 ctx.data.bin_val.ptr = nla_data(attr_data);
2033 case TEAM_OPTION_TYPE_BOOL:
2034 ctx.data.bool_val = attr_data ? true : false;
2039 err = team_option_set(team, opt_inst, &ctx);
2042 opt_inst->changed = true;
2043 list_add(&opt_inst->tmp_list, &opt_inst_list);
2051 err = team_nl_send_event_options_get(team, &opt_inst_list);
2054 team_nl_team_put(team);
2059 static int team_nl_fill_port_list_get(struct sk_buff *skb,
2060 u32 pid, u32 seq, int flags,
2064 struct nlattr *port_list;
2066 struct team_port *port;
2068 hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags,
2069 TEAM_CMD_PORT_LIST_GET);
2071 return PTR_ERR(hdr);
2073 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2074 goto nla_put_failure;
2075 port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT);
2077 goto nla_put_failure;
2079 list_for_each_entry(port, &team->port_list, list) {
2080 struct nlattr *port_item;
2082 /* Include only changed ports if fill all mode is not on */
2083 if (!fillall && !port->changed)
2085 port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT);
2087 goto nla_put_failure;
2088 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2089 goto nla_put_failure;
2090 if (port->changed) {
2091 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2092 goto nla_put_failure;
2093 port->changed = false;
2095 if ((port->removed &&
2096 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2097 (port->state.linkup &&
2098 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2099 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2100 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2101 goto nla_put_failure;
2102 nla_nest_end(skb, port_item);
2105 nla_nest_end(skb, port_list);
2106 return genlmsg_end(skb, hdr);
2109 genlmsg_cancel(skb, hdr);
2113 static int team_nl_fill_port_list_get_all(struct sk_buff *skb,
2114 struct genl_info *info, int flags,
2117 return team_nl_fill_port_list_get(skb, info->snd_pid,
2118 info->snd_seq, NLM_F_ACK,
2122 static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2123 struct genl_info *info)
2128 team = team_nl_team_get(info);
2132 err = team_nl_send_generic(info, team, team_nl_fill_port_list_get_all);
2134 team_nl_team_put(team);
2139 static struct genl_ops team_nl_ops[] = {
2141 .cmd = TEAM_CMD_NOOP,
2142 .doit = team_nl_cmd_noop,
2143 .policy = team_nl_policy,
2146 .cmd = TEAM_CMD_OPTIONS_SET,
2147 .doit = team_nl_cmd_options_set,
2148 .policy = team_nl_policy,
2149 .flags = GENL_ADMIN_PERM,
2152 .cmd = TEAM_CMD_OPTIONS_GET,
2153 .doit = team_nl_cmd_options_get,
2154 .policy = team_nl_policy,
2155 .flags = GENL_ADMIN_PERM,
2158 .cmd = TEAM_CMD_PORT_LIST_GET,
2159 .doit = team_nl_cmd_port_list_get,
2160 .policy = team_nl_policy,
2161 .flags = GENL_ADMIN_PERM,
2165 static struct genl_multicast_group team_change_event_mcgrp = {
2166 .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME,
2169 static int team_nl_send_multicast(struct sk_buff *skb,
2170 struct team *team, u32 pid)
2172 return genlmsg_multicast_netns(dev_net(team->dev), skb, 0,
2173 team_change_event_mcgrp.id, GFP_KERNEL);
2176 static int team_nl_send_event_options_get(struct team *team,
2177 struct list_head *sel_opt_inst_list)
2179 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2183 static int team_nl_send_event_port_list_get(struct team *team)
2185 struct sk_buff *skb;
2187 struct net *net = dev_net(team->dev);
2189 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2193 err = team_nl_fill_port_list_get(skb, 0, 0, 0, team, false);
2197 err = genlmsg_multicast_netns(net, skb, 0, team_change_event_mcgrp.id,
2206 static int team_nl_init(void)
2210 err = genl_register_family_with_ops(&team_nl_family, team_nl_ops,
2211 ARRAY_SIZE(team_nl_ops));
2215 err = genl_register_mc_group(&team_nl_family, &team_change_event_mcgrp);
2217 goto err_change_event_grp_reg;
2221 err_change_event_grp_reg:
2222 genl_unregister_family(&team_nl_family);
2227 static void team_nl_fini(void)
2229 genl_unregister_family(&team_nl_family);
2237 static void __team_options_change_check(struct team *team)
2240 struct team_option_inst *opt_inst;
2241 LIST_HEAD(sel_opt_inst_list);
2243 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2244 if (opt_inst->changed)
2245 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2247 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
2249 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2253 /* rtnl lock is held */
2254 static void __team_port_change_check(struct team_port *port, bool linkup)
2258 if (!port->removed && port->state.linkup == linkup)
2261 port->changed = true;
2262 port->state.linkup = linkup;
2263 team_refresh_port_linkup(port);
2265 struct ethtool_cmd ecmd;
2267 err = __ethtool_get_settings(port->dev, &ecmd);
2269 port->state.speed = ethtool_cmd_speed(&ecmd);
2270 port->state.duplex = ecmd.duplex;
2274 port->state.speed = 0;
2275 port->state.duplex = 0;
2278 err = team_nl_send_event_port_list_get(port->team);
2280 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink\n",
2285 static void team_port_change_check(struct team_port *port, bool linkup)
2287 struct team *team = port->team;
2289 mutex_lock(&team->lock);
2290 __team_port_change_check(port, linkup);
2291 mutex_unlock(&team->lock);
2295 /************************************
2296 * Net device notifier event handler
2297 ************************************/
2299 static int team_device_event(struct notifier_block *unused,
2300 unsigned long event, void *ptr)
2302 struct net_device *dev = (struct net_device *) ptr;
2303 struct team_port *port;
2305 port = team_port_get_rtnl(dev);
2311 if (netif_carrier_ok(dev))
2312 team_port_change_check(port, true);
2314 team_port_change_check(port, false);
2316 if (netif_running(port->dev))
2317 team_port_change_check(port,
2318 !!netif_carrier_ok(port->dev));
2320 case NETDEV_UNREGISTER:
2321 team_del_slave(port->team->dev, dev);
2323 case NETDEV_FEAT_CHANGE:
2324 team_compute_features(port->team);
2326 case NETDEV_CHANGEMTU:
2327 /* Forbid to change mtu of underlaying device */
2329 case NETDEV_PRE_TYPE_CHANGE:
2330 /* Forbid to change type of underlaying device */
2336 static struct notifier_block team_notifier_block __read_mostly = {
2337 .notifier_call = team_device_event,
2341 /***********************
2342 * Module init and exit
2343 ***********************/
2345 static int __init team_module_init(void)
2349 register_netdevice_notifier(&team_notifier_block);
2351 err = rtnl_link_register(&team_link_ops);
2355 err = team_nl_init();
2362 rtnl_link_unregister(&team_link_ops);
2365 unregister_netdevice_notifier(&team_notifier_block);
2370 static void __exit team_module_exit(void)
2373 rtnl_link_unregister(&team_link_ops);
2374 unregister_netdevice_notifier(&team_notifier_block);
2377 module_init(team_module_init);
2378 module_exit(team_module_exit);
2380 MODULE_LICENSE("GPL v2");
2381 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
2382 MODULE_DESCRIPTION("Ethernet team device driver");
2383 MODULE_ALIAS_RTNL_LINK(DRV_NAME);