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Merge tag 'usb-for-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb...
[linux/fpc-iii.git] / drivers / net / team / team.c
bloba0f64cba86badceadeb86cfb6fd11554b6cd27ea
1 /*
2 * drivers/net/team/team.c - Network team device driver
3 * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
4 *
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.
9 */
10
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 <net/switchdev.h>
32 #include <generated/utsrelease.h>
33 #include <linux/if_team.h>
34
35 #define DRV_NAME "team"
36
37
38 /**********
39 * Helpers
40 **********/
41
42 #define team_port_exists(dev) (dev->priv_flags & IFF_TEAM_PORT)
43
44 static struct team_port *team_port_get_rcu(const struct net_device *dev)
45 {
46 return rcu_dereference(dev->rx_handler_data);
47 }
48
49 static struct team_port *team_port_get_rtnl(const struct net_device *dev)
50 {
51 struct team_port *port = rtnl_dereference(dev->rx_handler_data);
52
53 return team_port_exists(dev) ? port : NULL;
54 }
55
56 /*
57 * Since the ability to change device address for open port device is tested in
58 * team_port_add, this function can be called without control of return value
59 */
60 static int __set_port_dev_addr(struct net_device *port_dev,
61 const unsigned char *dev_addr)
62 {
63 struct sockaddr addr;
64
65 memcpy(addr.sa_data, dev_addr, port_dev->addr_len);
66 addr.sa_family = port_dev->type;
67 return dev_set_mac_address(port_dev, &addr);
68 }
69
70 static int team_port_set_orig_dev_addr(struct team_port *port)
71 {
72 return __set_port_dev_addr(port->dev, port->orig.dev_addr);
73 }
74
75 static int team_port_set_team_dev_addr(struct team *team,
76 struct team_port *port)
77 {
78 return __set_port_dev_addr(port->dev, team->dev->dev_addr);
79 }
80
81 int team_modeop_port_enter(struct team *team, struct team_port *port)
82 {
83 return team_port_set_team_dev_addr(team, port);
84 }
85 EXPORT_SYMBOL(team_modeop_port_enter);
86
87 void team_modeop_port_change_dev_addr(struct team *team,
88 struct team_port *port)
89 {
90 team_port_set_team_dev_addr(team, port);
91 }
92 EXPORT_SYMBOL(team_modeop_port_change_dev_addr);
93
94 static void team_lower_state_changed(struct team_port *port)
95 {
96 struct netdev_lag_lower_state_info info;
97
98 info.link_up = port->linkup;
99 info.tx_enabled = team_port_enabled(port);
100 netdev_lower_state_changed(port->dev, &info);
101 }
102
103 static void team_refresh_port_linkup(struct team_port *port)
104 {
105 bool new_linkup = port->user.linkup_enabled ? port->user.linkup :
106 port->state.linkup;
107
108 if (port->linkup != new_linkup) {
109 port->linkup = new_linkup;
110 team_lower_state_changed(port);
111 }
112 }
113
114
115 /*******************
116 * Options handling
117 *******************/
118
119 struct team_option_inst { /* One for each option instance */
120 struct list_head list;
121 struct list_head tmp_list;
122 struct team_option *option;
123 struct team_option_inst_info info;
124 bool changed;
125 bool removed;
126 };
127
128 static struct team_option *__team_find_option(struct team *team,
129 const char *opt_name)
130 {
131 struct team_option *option;
132
133 list_for_each_entry(option, &team->option_list, list) {
134 if (strcmp(option->name, opt_name) == 0)
135 return option;
136 }
137 return NULL;
138 }
139
140 static void __team_option_inst_del(struct team_option_inst *opt_inst)
141 {
142 list_del(&opt_inst->list);
143 kfree(opt_inst);
144 }
145
146 static void __team_option_inst_del_option(struct team *team,
147 struct team_option *option)
148 {
149 struct team_option_inst *opt_inst, *tmp;
150
151 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
152 if (opt_inst->option == option)
153 __team_option_inst_del(opt_inst);
154 }
155 }
156
157 static int __team_option_inst_add(struct team *team, struct team_option *option,
158 struct team_port *port)
159 {
160 struct team_option_inst *opt_inst;
161 unsigned int array_size;
162 unsigned int i;
163 int err;
164
165 array_size = option->array_size;
166 if (!array_size)
167 array_size = 1; /* No array but still need one instance */
168
169 for (i = 0; i < array_size; i++) {
170 opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL);
171 if (!opt_inst)
172 return -ENOMEM;
173 opt_inst->option = option;
174 opt_inst->info.port = port;
175 opt_inst->info.array_index = i;
176 opt_inst->changed = true;
177 opt_inst->removed = false;
178 list_add_tail(&opt_inst->list, &team->option_inst_list);
179 if (option->init) {
180 err = option->init(team, &opt_inst->info);
181 if (err)
182 return err;
183 }
184
185 }
186 return 0;
187 }
188
189 static int __team_option_inst_add_option(struct team *team,
190 struct team_option *option)
191 {
192 int err;
193
194 if (!option->per_port) {
195 err = __team_option_inst_add(team, option, NULL);
196 if (err)
197 goto inst_del_option;
198 }
199 return 0;
200
201 inst_del_option:
202 __team_option_inst_del_option(team, option);
203 return err;
204 }
205
206 static void __team_option_inst_mark_removed_option(struct team *team,
207 struct team_option *option)
208 {
209 struct team_option_inst *opt_inst;
210
211 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
212 if (opt_inst->option == option) {
213 opt_inst->changed = true;
214 opt_inst->removed = true;
215 }
216 }
217 }
218
219 static void __team_option_inst_del_port(struct team *team,
220 struct team_port *port)
221 {
222 struct team_option_inst *opt_inst, *tmp;
223
224 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
225 if (opt_inst->option->per_port &&
226 opt_inst->info.port == port)
227 __team_option_inst_del(opt_inst);
228 }
229 }
230
231 static int __team_option_inst_add_port(struct team *team,
232 struct team_port *port)
233 {
234 struct team_option *option;
235 int err;
236
237 list_for_each_entry(option, &team->option_list, list) {
238 if (!option->per_port)
239 continue;
240 err = __team_option_inst_add(team, option, port);
241 if (err)
242 goto inst_del_port;
243 }
244 return 0;
245
246 inst_del_port:
247 __team_option_inst_del_port(team, port);
248 return err;
249 }
250
251 static void __team_option_inst_mark_removed_port(struct team *team,
252 struct team_port *port)
253 {
254 struct team_option_inst *opt_inst;
255
256 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
257 if (opt_inst->info.port == port) {
258 opt_inst->changed = true;
259 opt_inst->removed = true;
260 }
261 }
262 }
263
264 static int __team_options_register(struct team *team,
265 const struct team_option *option,
266 size_t option_count)
267 {
268 int i;
269 struct team_option **dst_opts;
270 int err;
271
272 dst_opts = kzalloc(sizeof(struct team_option *) * option_count,
273 GFP_KERNEL);
274 if (!dst_opts)
275 return -ENOMEM;
276 for (i = 0; i < option_count; i++, option++) {
277 if (__team_find_option(team, option->name)) {
278 err = -EEXIST;
279 goto alloc_rollback;
280 }
281 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL);
282 if (!dst_opts[i]) {
283 err = -ENOMEM;
284 goto alloc_rollback;
285 }
286 }
287
288 for (i = 0; i < option_count; i++) {
289 err = __team_option_inst_add_option(team, dst_opts[i]);
290 if (err)
291 goto inst_rollback;
292 list_add_tail(&dst_opts[i]->list, &team->option_list);
293 }
294
295 kfree(dst_opts);
296 return 0;
297
298 inst_rollback:
299 for (i--; i >= 0; i--)
300 __team_option_inst_del_option(team, dst_opts[i]);
301
302 i = option_count - 1;
303 alloc_rollback:
304 for (i--; i >= 0; i--)
305 kfree(dst_opts[i]);
306
307 kfree(dst_opts);
308 return err;
309 }
310
311 static void __team_options_mark_removed(struct team *team,
312 const struct team_option *option,
313 size_t option_count)
314 {
315 int i;
316
317 for (i = 0; i < option_count; i++, option++) {
318 struct team_option *del_opt;
319
320 del_opt = __team_find_option(team, option->name);
321 if (del_opt)
322 __team_option_inst_mark_removed_option(team, del_opt);
323 }
324 }
325
326 static void __team_options_unregister(struct team *team,
327 const struct team_option *option,
328 size_t option_count)
329 {
330 int i;
331
332 for (i = 0; i < option_count; i++, option++) {
333 struct team_option *del_opt;
334
335 del_opt = __team_find_option(team, option->name);
336 if (del_opt) {
337 __team_option_inst_del_option(team, del_opt);
338 list_del(&del_opt->list);
339 kfree(del_opt);
340 }
341 }
342 }
343
344 static void __team_options_change_check(struct team *team);
345
346 int team_options_register(struct team *team,
347 const struct team_option *option,
348 size_t option_count)
349 {
350 int err;
351
352 err = __team_options_register(team, option, option_count);
353 if (err)
354 return err;
355 __team_options_change_check(team);
356 return 0;
357 }
358 EXPORT_SYMBOL(team_options_register);
359
360 void team_options_unregister(struct team *team,
361 const struct team_option *option,
362 size_t option_count)
363 {
364 __team_options_mark_removed(team, option, option_count);
365 __team_options_change_check(team);
366 __team_options_unregister(team, option, option_count);
367 }
368 EXPORT_SYMBOL(team_options_unregister);
369
370 static int team_option_get(struct team *team,
371 struct team_option_inst *opt_inst,
372 struct team_gsetter_ctx *ctx)
373 {
374 if (!opt_inst->option->getter)
375 return -EOPNOTSUPP;
376 return opt_inst->option->getter(team, ctx);
377 }
378
379 static int team_option_set(struct team *team,
380 struct team_option_inst *opt_inst,
381 struct team_gsetter_ctx *ctx)
382 {
383 if (!opt_inst->option->setter)
384 return -EOPNOTSUPP;
385 return opt_inst->option->setter(team, ctx);
386 }
387
388 void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info)
389 {
390 struct team_option_inst *opt_inst;
391
392 opt_inst = container_of(opt_inst_info, struct team_option_inst, info);
393 opt_inst->changed = true;
394 }
395 EXPORT_SYMBOL(team_option_inst_set_change);
396
397 void team_options_change_check(struct team *team)
398 {
399 __team_options_change_check(team);
400 }
401 EXPORT_SYMBOL(team_options_change_check);
402
403
404 /****************
405 * Mode handling
406 ****************/
407
408 static LIST_HEAD(mode_list);
409 static DEFINE_SPINLOCK(mode_list_lock);
410
411 struct team_mode_item {
412 struct list_head list;
413 const struct team_mode *mode;
414 };
415
416 static struct team_mode_item *__find_mode(const char *kind)
417 {
418 struct team_mode_item *mitem;
419
420 list_for_each_entry(mitem, &mode_list, list) {
421 if (strcmp(mitem->mode->kind, kind) == 0)
422 return mitem;
423 }
424 return NULL;
425 }
426
427 static bool is_good_mode_name(const char *name)
428 {
429 while (*name != '\0') {
430 if (!isalpha(*name) && !isdigit(*name) && *name != '_')
431 return false;
432 name++;
433 }
434 return true;
435 }
436
437 int team_mode_register(const struct team_mode *mode)
438 {
439 int err = 0;
440 struct team_mode_item *mitem;
441
442 if (!is_good_mode_name(mode->kind) ||
443 mode->priv_size > TEAM_MODE_PRIV_SIZE)
444 return -EINVAL;
445
446 mitem = kmalloc(sizeof(*mitem), GFP_KERNEL);
447 if (!mitem)
448 return -ENOMEM;
449
450 spin_lock(&mode_list_lock);
451 if (__find_mode(mode->kind)) {
452 err = -EEXIST;
453 kfree(mitem);
454 goto unlock;
455 }
456 mitem->mode = mode;
457 list_add_tail(&mitem->list, &mode_list);
458 unlock:
459 spin_unlock(&mode_list_lock);
460 return err;
461 }
462 EXPORT_SYMBOL(team_mode_register);
463
464 void team_mode_unregister(const struct team_mode *mode)
465 {
466 struct team_mode_item *mitem;
467
468 spin_lock(&mode_list_lock);
469 mitem = __find_mode(mode->kind);
470 if (mitem) {
471 list_del_init(&mitem->list);
472 kfree(mitem);
473 }
474 spin_unlock(&mode_list_lock);
475 }
476 EXPORT_SYMBOL(team_mode_unregister);
477
478 static const struct team_mode *team_mode_get(const char *kind)
479 {
480 struct team_mode_item *mitem;
481 const struct team_mode *mode = NULL;
482
483 spin_lock(&mode_list_lock);
484 mitem = __find_mode(kind);
485 if (!mitem) {
486 spin_unlock(&mode_list_lock);
487 request_module("team-mode-%s", kind);
488 spin_lock(&mode_list_lock);
489 mitem = __find_mode(kind);
490 }
491 if (mitem) {
492 mode = mitem->mode;
493 if (!try_module_get(mode->owner))
494 mode = NULL;
495 }
496
497 spin_unlock(&mode_list_lock);
498 return mode;
499 }
500
501 static void team_mode_put(const struct team_mode *mode)
502 {
503 module_put(mode->owner);
504 }
505
506 static bool team_dummy_transmit(struct team *team, struct sk_buff *skb)
507 {
508 dev_kfree_skb_any(skb);
509 return false;
510 }
511
512 static rx_handler_result_t team_dummy_receive(struct team *team,
513 struct team_port *port,
514 struct sk_buff *skb)
515 {
516 return RX_HANDLER_ANOTHER;
517 }
518
519 static const struct team_mode __team_no_mode = {
520 .kind = "*NOMODE*",
521 };
522
523 static bool team_is_mode_set(struct team *team)
524 {
525 return team->mode != &__team_no_mode;
526 }
527
528 static void team_set_no_mode(struct team *team)
529 {
530 team->user_carrier_enabled = false;
531 team->mode = &__team_no_mode;
532 }
533
534 static void team_adjust_ops(struct team *team)
535 {
536 /*
537 * To avoid checks in rx/tx skb paths, ensure here that non-null and
538 * correct ops are always set.
539 */
540
541 if (!team->en_port_count || !team_is_mode_set(team) ||
542 !team->mode->ops->transmit)
543 team->ops.transmit = team_dummy_transmit;
544 else
545 team->ops.transmit = team->mode->ops->transmit;
546
547 if (!team->en_port_count || !team_is_mode_set(team) ||
548 !team->mode->ops->receive)
549 team->ops.receive = team_dummy_receive;
550 else
551 team->ops.receive = team->mode->ops->receive;
552 }
553
554 /*
555 * We can benefit from the fact that it's ensured no port is present
556 * at the time of mode change. Therefore no packets are in fly so there's no
557 * need to set mode operations in any special way.
558 */
559 static int __team_change_mode(struct team *team,
560 const struct team_mode *new_mode)
561 {
562 /* Check if mode was previously set and do cleanup if so */
563 if (team_is_mode_set(team)) {
564 void (*exit_op)(struct team *team) = team->ops.exit;
565
566 /* Clear ops area so no callback is called any longer */
567 memset(&team->ops, 0, sizeof(struct team_mode_ops));
568 team_adjust_ops(team);
569
570 if (exit_op)
571 exit_op(team);
572 team_mode_put(team->mode);
573 team_set_no_mode(team);
574 /* zero private data area */
575 memset(&team->mode_priv, 0,
576 sizeof(struct team) - offsetof(struct team, mode_priv));
577 }
578
579 if (!new_mode)
580 return 0;
581
582 if (new_mode->ops->init) {
583 int err;
584
585 err = new_mode->ops->init(team);
586 if (err)
587 return err;
588 }
589
590 team->mode = new_mode;
591 memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops));
592 team_adjust_ops(team);
593
594 return 0;
595 }
596
597 static int team_change_mode(struct team *team, const char *kind)
598 {
599 const struct team_mode *new_mode;
600 struct net_device *dev = team->dev;
601 int err;
602
603 if (!list_empty(&team->port_list)) {
604 netdev_err(dev, "No ports can be present during mode change\n");
605 return -EBUSY;
606 }
607
608 if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) {
609 netdev_err(dev, "Unable to change to the same mode the team is in\n");
610 return -EINVAL;
611 }
612
613 new_mode = team_mode_get(kind);
614 if (!new_mode) {
615 netdev_err(dev, "Mode \"%s\" not found\n", kind);
616 return -EINVAL;
617 }
618
619 err = __team_change_mode(team, new_mode);
620 if (err) {
621 netdev_err(dev, "Failed to change to mode \"%s\"\n", kind);
622 team_mode_put(new_mode);
623 return err;
624 }
625
626 netdev_info(dev, "Mode changed to \"%s\"\n", kind);
627 return 0;
628 }
629
630
631 /*********************
632 * Peers notification
633 *********************/
634
635 static void team_notify_peers_work(struct work_struct *work)
636 {
637 struct team *team;
638 int val;
639
640 team = container_of(work, struct team, notify_peers.dw.work);
641
642 if (!rtnl_trylock()) {
643 schedule_delayed_work(&team->notify_peers.dw, 0);
644 return;
645 }
646 val = atomic_dec_if_positive(&team->notify_peers.count_pending);
647 if (val < 0) {
648 rtnl_unlock();
649 return;
650 }
651 call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, team->dev);
652 rtnl_unlock();
653 if (val)
654 schedule_delayed_work(&team->notify_peers.dw,
655 msecs_to_jiffies(team->notify_peers.interval));
656 }
657
658 static void team_notify_peers(struct team *team)
659 {
660 if (!team->notify_peers.count || !netif_running(team->dev))
661 return;
662 atomic_add(team->notify_peers.count, &team->notify_peers.count_pending);
663 schedule_delayed_work(&team->notify_peers.dw, 0);
664 }
665
666 static void team_notify_peers_init(struct team *team)
667 {
668 INIT_DELAYED_WORK(&team->notify_peers.dw, team_notify_peers_work);
669 }
670
671 static void team_notify_peers_fini(struct team *team)
672 {
673 cancel_delayed_work_sync(&team->notify_peers.dw);
674 }
675
676
677 /*******************************
678 * Send multicast group rejoins
679 *******************************/
680
681 static void team_mcast_rejoin_work(struct work_struct *work)
682 {
683 struct team *team;
684 int val;
685
686 team = container_of(work, struct team, mcast_rejoin.dw.work);
687
688 if (!rtnl_trylock()) {
689 schedule_delayed_work(&team->mcast_rejoin.dw, 0);
690 return;
691 }
692 val = atomic_dec_if_positive(&team->mcast_rejoin.count_pending);
693 if (val < 0) {
694 rtnl_unlock();
695 return;
696 }
697 call_netdevice_notifiers(NETDEV_RESEND_IGMP, team->dev);
698 rtnl_unlock();
699 if (val)
700 schedule_delayed_work(&team->mcast_rejoin.dw,
701 msecs_to_jiffies(team->mcast_rejoin.interval));
702 }
703
704 static void team_mcast_rejoin(struct team *team)
705 {
706 if (!team->mcast_rejoin.count || !netif_running(team->dev))
707 return;
708 atomic_add(team->mcast_rejoin.count, &team->mcast_rejoin.count_pending);
709 schedule_delayed_work(&team->mcast_rejoin.dw, 0);
710 }
711
712 static void team_mcast_rejoin_init(struct team *team)
713 {
714 INIT_DELAYED_WORK(&team->mcast_rejoin.dw, team_mcast_rejoin_work);
715 }
716
717 static void team_mcast_rejoin_fini(struct team *team)
718 {
719 cancel_delayed_work_sync(&team->mcast_rejoin.dw);
720 }
721
722
723 /************************
724 * Rx path frame handler
725 ************************/
726
727 /* note: already called with rcu_read_lock */
728 static rx_handler_result_t team_handle_frame(struct sk_buff **pskb)
729 {
730 struct sk_buff *skb = *pskb;
731 struct team_port *port;
732 struct team *team;
733 rx_handler_result_t res;
734
735 skb = skb_share_check(skb, GFP_ATOMIC);
736 if (!skb)
737 return RX_HANDLER_CONSUMED;
738
739 *pskb = skb;
740
741 port = team_port_get_rcu(skb->dev);
742 team = port->team;
743 if (!team_port_enabled(port)) {
744 /* allow exact match delivery for disabled ports */
745 res = RX_HANDLER_EXACT;
746 } else {
747 res = team->ops.receive(team, port, skb);
748 }
749 if (res == RX_HANDLER_ANOTHER) {
750 struct team_pcpu_stats *pcpu_stats;
751
752 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
753 u64_stats_update_begin(&pcpu_stats->syncp);
754 pcpu_stats->rx_packets++;
755 pcpu_stats->rx_bytes += skb->len;
756 if (skb->pkt_type == PACKET_MULTICAST)
757 pcpu_stats->rx_multicast++;
758 u64_stats_update_end(&pcpu_stats->syncp);
759
760 skb->dev = team->dev;
761 } else if (res == RX_HANDLER_EXACT) {
762 this_cpu_inc(team->pcpu_stats->rx_nohandler);
763 } else {
764 this_cpu_inc(team->pcpu_stats->rx_dropped);
765 }
766
767 return res;
768 }
769
770
771 /*************************************
772 * Multiqueue Tx port select override
773 *************************************/
774
775 static int team_queue_override_init(struct team *team)
776 {
777 struct list_head *listarr;
778 unsigned int queue_cnt = team->dev->num_tx_queues - 1;
779 unsigned int i;
780
781 if (!queue_cnt)
782 return 0;
783 listarr = kmalloc(sizeof(struct list_head) * queue_cnt, GFP_KERNEL);
784 if (!listarr)
785 return -ENOMEM;
786 team->qom_lists = listarr;
787 for (i = 0; i < queue_cnt; i++)
788 INIT_LIST_HEAD(listarr++);
789 return 0;
790 }
791
792 static void team_queue_override_fini(struct team *team)
793 {
794 kfree(team->qom_lists);
795 }
796
797 static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id)
798 {
799 return &team->qom_lists[queue_id - 1];
800 }
801
802 /*
803 * note: already called with rcu_read_lock
804 */
805 static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb)
806 {
807 struct list_head *qom_list;
808 struct team_port *port;
809
810 if (!team->queue_override_enabled || !skb->queue_mapping)
811 return false;
812 qom_list = __team_get_qom_list(team, skb->queue_mapping);
813 list_for_each_entry_rcu(port, qom_list, qom_list) {
814 if (!team_dev_queue_xmit(team, port, skb))
815 return true;
816 }
817 return false;
818 }
819
820 static void __team_queue_override_port_del(struct team *team,
821 struct team_port *port)
822 {
823 if (!port->queue_id)
824 return;
825 list_del_rcu(&port->qom_list);
826 }
827
828 static bool team_queue_override_port_has_gt_prio_than(struct team_port *port,
829 struct team_port *cur)
830 {
831 if (port->priority < cur->priority)
832 return true;
833 if (port->priority > cur->priority)
834 return false;
835 if (port->index < cur->index)
836 return true;
837 return false;
838 }
839
840 static void __team_queue_override_port_add(struct team *team,
841 struct team_port *port)
842 {
843 struct team_port *cur;
844 struct list_head *qom_list;
845 struct list_head *node;
846
847 if (!port->queue_id)
848 return;
849 qom_list = __team_get_qom_list(team, port->queue_id);
850 node = qom_list;
851 list_for_each_entry(cur, qom_list, qom_list) {
852 if (team_queue_override_port_has_gt_prio_than(port, cur))
853 break;
854 node = &cur->qom_list;
855 }
856 list_add_tail_rcu(&port->qom_list, node);
857 }
858
859 static void __team_queue_override_enabled_check(struct team *team)
860 {
861 struct team_port *port;
862 bool enabled = false;
863
864 list_for_each_entry(port, &team->port_list, list) {
865 if (port->queue_id) {
866 enabled = true;
867 break;
868 }
869 }
870 if (enabled == team->queue_override_enabled)
871 return;
872 netdev_dbg(team->dev, "%s queue override\n",
873 enabled ? "Enabling" : "Disabling");
874 team->queue_override_enabled = enabled;
875 }
876
877 static void team_queue_override_port_prio_changed(struct team *team,
878 struct team_port *port)
879 {
880 if (!port->queue_id || team_port_enabled(port))
881 return;
882 __team_queue_override_port_del(team, port);
883 __team_queue_override_port_add(team, port);
884 __team_queue_override_enabled_check(team);
885 }
886
887 static void team_queue_override_port_change_queue_id(struct team *team,
888 struct team_port *port,
889 u16 new_queue_id)
890 {
891 if (team_port_enabled(port)) {
892 __team_queue_override_port_del(team, port);
893 port->queue_id = new_queue_id;
894 __team_queue_override_port_add(team, port);
895 __team_queue_override_enabled_check(team);
896 } else {
897 port->queue_id = new_queue_id;
898 }
899 }
900
901 static void team_queue_override_port_add(struct team *team,
902 struct team_port *port)
903 {
904 __team_queue_override_port_add(team, port);
905 __team_queue_override_enabled_check(team);
906 }
907
908 static void team_queue_override_port_del(struct team *team,
909 struct team_port *port)
910 {
911 __team_queue_override_port_del(team, port);
912 __team_queue_override_enabled_check(team);
913 }
914
915
916 /****************
917 * Port handling
918 ****************/
919
920 static bool team_port_find(const struct team *team,
921 const struct team_port *port)
922 {
923 struct team_port *cur;
924
925 list_for_each_entry(cur, &team->port_list, list)
926 if (cur == port)
927 return true;
928 return false;
929 }
930
931 /*
932 * Enable/disable port by adding to enabled port hashlist and setting
933 * port->index (Might be racy so reader could see incorrect ifindex when
934 * processing a flying packet, but that is not a problem). Write guarded
935 * by team->lock.
936 */
937 static void team_port_enable(struct team *team,
938 struct team_port *port)
939 {
940 if (team_port_enabled(port))
941 return;
942 port->index = team->en_port_count++;
943 hlist_add_head_rcu(&port->hlist,
944 team_port_index_hash(team, port->index));
945 team_adjust_ops(team);
946 team_queue_override_port_add(team, port);
947 if (team->ops.port_enabled)
948 team->ops.port_enabled(team, port);
949 team_notify_peers(team);
950 team_mcast_rejoin(team);
951 team_lower_state_changed(port);
952 }
953
954 static void __reconstruct_port_hlist(struct team *team, int rm_index)
955 {
956 int i;
957 struct team_port *port;
958
959 for (i = rm_index + 1; i < team->en_port_count; i++) {
960 port = team_get_port_by_index(team, i);
961 hlist_del_rcu(&port->hlist);
962 port->index--;
963 hlist_add_head_rcu(&port->hlist,
964 team_port_index_hash(team, port->index));
965 }
966 }
967
968 static void team_port_disable(struct team *team,
969 struct team_port *port)
970 {
971 if (!team_port_enabled(port))
972 return;
973 if (team->ops.port_disabled)
974 team->ops.port_disabled(team, port);
975 hlist_del_rcu(&port->hlist);
976 __reconstruct_port_hlist(team, port->index);
977 port->index = -1;
978 team->en_port_count--;
979 team_queue_override_port_del(team, port);
980 team_adjust_ops(team);
981 team_notify_peers(team);
982 team_mcast_rejoin(team);
983 team_lower_state_changed(port);
984 }
985
986 #define TEAM_VLAN_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \
987 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
988 NETIF_F_HIGHDMA | NETIF_F_LRO)
989
990 #define TEAM_ENC_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \
991 NETIF_F_RXCSUM | NETIF_F_ALL_TSO)
992
993 static void __team_compute_features(struct team *team)
994 {
995 struct team_port *port;
996 u32 vlan_features = TEAM_VLAN_FEATURES & NETIF_F_ALL_FOR_ALL;
997 netdev_features_t enc_features = TEAM_ENC_FEATURES;
998 unsigned short max_hard_header_len = ETH_HLEN;
999 unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE |
1000 IFF_XMIT_DST_RELEASE_PERM;
1001
1002 list_for_each_entry(port, &team->port_list, list) {
1003 vlan_features = netdev_increment_features(vlan_features,
1004 port->dev->vlan_features,
1005 TEAM_VLAN_FEATURES);
1006 enc_features =
1007 netdev_increment_features(enc_features,
1008 port->dev->hw_enc_features,
1009 TEAM_ENC_FEATURES);
1010
1011
1012 dst_release_flag &= port->dev->priv_flags;
1013 if (port->dev->hard_header_len > max_hard_header_len)
1014 max_hard_header_len = port->dev->hard_header_len;
1015 }
1016
1017 team->dev->vlan_features = vlan_features;
1018 team->dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL;
1019 team->dev->hard_header_len = max_hard_header_len;
1020
1021 team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
1022 if (dst_release_flag == (IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM))
1023 team->dev->priv_flags |= IFF_XMIT_DST_RELEASE;
1024
1025 netdev_change_features(team->dev);
1026 }
1027
1028 static void team_compute_features(struct team *team)
1029 {
1030 mutex_lock(&team->lock);
1031 __team_compute_features(team);
1032 mutex_unlock(&team->lock);
1033 }
1034
1035 static int team_port_enter(struct team *team, struct team_port *port)
1036 {
1037 int err = 0;
1038
1039 dev_hold(team->dev);
1040 if (team->ops.port_enter) {
1041 err = team->ops.port_enter(team, port);
1042 if (err) {
1043 netdev_err(team->dev, "Device %s failed to enter team mode\n",
1044 port->dev->name);
1045 goto err_port_enter;
1046 }
1047 }
1048
1049 return 0;
1050
1051 err_port_enter:
1052 dev_put(team->dev);
1053
1054 return err;
1055 }
1056
1057 static void team_port_leave(struct team *team, struct team_port *port)
1058 {
1059 if (team->ops.port_leave)
1060 team->ops.port_leave(team, port);
1061 dev_put(team->dev);
1062 }
1063
1064 #ifdef CONFIG_NET_POLL_CONTROLLER
1065 static int team_port_enable_netpoll(struct team *team, struct team_port *port)
1066 {
1067 struct netpoll *np;
1068 int err;
1069
1070 if (!team->dev->npinfo)
1071 return 0;
1072
1073 np = kzalloc(sizeof(*np), GFP_KERNEL);
1074 if (!np)
1075 return -ENOMEM;
1076
1077 err = __netpoll_setup(np, port->dev);
1078 if (err) {
1079 kfree(np);
1080 return err;
1081 }
1082 port->np = np;
1083 return err;
1084 }
1085
1086 static void team_port_disable_netpoll(struct team_port *port)
1087 {
1088 struct netpoll *np = port->np;
1089
1090 if (!np)
1091 return;
1092 port->np = NULL;
1093
1094 /* Wait for transmitting packets to finish before freeing. */
1095 synchronize_rcu_bh();
1096 __netpoll_cleanup(np);
1097 kfree(np);
1098 }
1099 #else
1100 static int team_port_enable_netpoll(struct team *team, struct team_port *port)
1101 {
1102 return 0;
1103 }
1104 static void team_port_disable_netpoll(struct team_port *port)
1105 {
1106 }
1107 #endif
1108
1109 static int team_upper_dev_link(struct team *team, struct team_port *port)
1110 {
1111 struct netdev_lag_upper_info lag_upper_info;
1112 int err;
1113
1114 lag_upper_info.tx_type = team->mode->lag_tx_type;
1115 err = netdev_master_upper_dev_link(port->dev, team->dev, NULL,
1116 &lag_upper_info);
1117 if (err)
1118 return err;
1119 port->dev->priv_flags |= IFF_TEAM_PORT;
1120 return 0;
1121 }
1122
1123 static void team_upper_dev_unlink(struct team *team, struct team_port *port)
1124 {
1125 netdev_upper_dev_unlink(port->dev, team->dev);
1126 port->dev->priv_flags &= ~IFF_TEAM_PORT;
1127 }
1128
1129 static void __team_port_change_port_added(struct team_port *port, bool linkup);
1130 static int team_dev_type_check_change(struct net_device *dev,
1131 struct net_device *port_dev);
1132
1133 static int team_port_add(struct team *team, struct net_device *port_dev)
1134 {
1135 struct net_device *dev = team->dev;
1136 struct team_port *port;
1137 char *portname = port_dev->name;
1138 int err;
1139
1140 if (port_dev->flags & IFF_LOOPBACK) {
1141 netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n",
1142 portname);
1143 return -EINVAL;
1144 }
1145
1146 if (team_port_exists(port_dev)) {
1147 netdev_err(dev, "Device %s is already a port "
1148 "of a team device\n", portname);
1149 return -EBUSY;
1150 }
1151
1152 if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
1153 vlan_uses_dev(dev)) {
1154 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
1155 portname);
1156 return -EPERM;
1157 }
1158
1159 err = team_dev_type_check_change(dev, port_dev);
1160 if (err)
1161 return err;
1162
1163 if (port_dev->flags & IFF_UP) {
1164 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
1165 portname);
1166 return -EBUSY;
1167 }
1168
1169 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size,
1170 GFP_KERNEL);
1171 if (!port)
1172 return -ENOMEM;
1173
1174 port->dev = port_dev;
1175 port->team = team;
1176 INIT_LIST_HEAD(&port->qom_list);
1177
1178 port->orig.mtu = port_dev->mtu;
1179 err = dev_set_mtu(port_dev, dev->mtu);
1180 if (err) {
1181 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
1182 goto err_set_mtu;
1183 }
1184
1185 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len);
1186
1187 err = team_port_enter(team, port);
1188 if (err) {
1189 netdev_err(dev, "Device %s failed to enter team mode\n",
1190 portname);
1191 goto err_port_enter;
1192 }
1193
1194 err = dev_open(port_dev);
1195 if (err) {
1196 netdev_dbg(dev, "Device %s opening failed\n",
1197 portname);
1198 goto err_dev_open;
1199 }
1200
1201 dev_uc_sync_multiple(port_dev, dev);
1202 dev_mc_sync_multiple(port_dev, dev);
1203
1204 err = vlan_vids_add_by_dev(port_dev, dev);
1205 if (err) {
1206 netdev_err(dev, "Failed to add vlan ids to device %s\n",
1207 portname);
1208 goto err_vids_add;
1209 }
1210
1211 err = team_port_enable_netpoll(team, port);
1212 if (err) {
1213 netdev_err(dev, "Failed to enable netpoll on device %s\n",
1214 portname);
1215 goto err_enable_netpoll;
1216 }
1217
1218 if (!(dev->features & NETIF_F_LRO))
1219 dev_disable_lro(port_dev);
1220
1221 err = netdev_rx_handler_register(port_dev, team_handle_frame,
1222 port);
1223 if (err) {
1224 netdev_err(dev, "Device %s failed to register rx_handler\n",
1225 portname);
1226 goto err_handler_register;
1227 }
1228
1229 err = team_upper_dev_link(team, port);
1230 if (err) {
1231 netdev_err(dev, "Device %s failed to set upper link\n",
1232 portname);
1233 goto err_set_upper_link;
1234 }
1235
1236 err = __team_option_inst_add_port(team, port);
1237 if (err) {
1238 netdev_err(dev, "Device %s failed to add per-port options\n",
1239 portname);
1240 goto err_option_port_add;
1241 }
1242
1243 port->index = -1;
1244 list_add_tail_rcu(&port->list, &team->port_list);
1245 team_port_enable(team, port);
1246 __team_compute_features(team);
1247 __team_port_change_port_added(port, !!netif_carrier_ok(port_dev));
1248 __team_options_change_check(team);
1249
1250 netdev_info(dev, "Port device %s added\n", portname);
1251
1252 return 0;
1253
1254 err_option_port_add:
1255 team_upper_dev_unlink(team, port);
1256
1257 err_set_upper_link:
1258 netdev_rx_handler_unregister(port_dev);
1259
1260 err_handler_register:
1261 team_port_disable_netpoll(port);
1262
1263 err_enable_netpoll:
1264 vlan_vids_del_by_dev(port_dev, dev);
1265
1266 err_vids_add:
1267 dev_uc_unsync(port_dev, dev);
1268 dev_mc_unsync(port_dev, dev);
1269 dev_close(port_dev);
1270
1271 err_dev_open:
1272 team_port_leave(team, port);
1273 team_port_set_orig_dev_addr(port);
1274
1275 err_port_enter:
1276 dev_set_mtu(port_dev, port->orig.mtu);
1277
1278 err_set_mtu:
1279 kfree(port);
1280
1281 return err;
1282 }
1283
1284 static void __team_port_change_port_removed(struct team_port *port);
1285
1286 static int team_port_del(struct team *team, struct net_device *port_dev)
1287 {
1288 struct net_device *dev = team->dev;
1289 struct team_port *port;
1290 char *portname = port_dev->name;
1291
1292 port = team_port_get_rtnl(port_dev);
1293 if (!port || !team_port_find(team, port)) {
1294 netdev_err(dev, "Device %s does not act as a port of this team\n",
1295 portname);
1296 return -ENOENT;
1297 }
1298
1299 team_port_disable(team, port);
1300 list_del_rcu(&port->list);
1301 team_upper_dev_unlink(team, port);
1302 netdev_rx_handler_unregister(port_dev);
1303 team_port_disable_netpoll(port);
1304 vlan_vids_del_by_dev(port_dev, dev);
1305 dev_uc_unsync(port_dev, dev);
1306 dev_mc_unsync(port_dev, dev);
1307 dev_close(port_dev);
1308 team_port_leave(team, port);
1309
1310 __team_option_inst_mark_removed_port(team, port);
1311 __team_options_change_check(team);
1312 __team_option_inst_del_port(team, port);
1313 __team_port_change_port_removed(port);
1314
1315 team_port_set_orig_dev_addr(port);
1316 dev_set_mtu(port_dev, port->orig.mtu);
1317 kfree_rcu(port, rcu);
1318 netdev_info(dev, "Port device %s removed\n", portname);
1319 __team_compute_features(team);
1320
1321 return 0;
1322 }
1323
1324
1325 /*****************
1326 * Net device ops
1327 *****************/
1328
1329 static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
1330 {
1331 ctx->data.str_val = team->mode->kind;
1332 return 0;
1333 }
1334
1335 static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
1336 {
1337 return team_change_mode(team, ctx->data.str_val);
1338 }
1339
1340 static int team_notify_peers_count_get(struct team *team,
1341 struct team_gsetter_ctx *ctx)
1342 {
1343 ctx->data.u32_val = team->notify_peers.count;
1344 return 0;
1345 }
1346
1347 static int team_notify_peers_count_set(struct team *team,
1348 struct team_gsetter_ctx *ctx)
1349 {
1350 team->notify_peers.count = ctx->data.u32_val;
1351 return 0;
1352 }
1353
1354 static int team_notify_peers_interval_get(struct team *team,
1355 struct team_gsetter_ctx *ctx)
1356 {
1357 ctx->data.u32_val = team->notify_peers.interval;
1358 return 0;
1359 }
1360
1361 static int team_notify_peers_interval_set(struct team *team,
1362 struct team_gsetter_ctx *ctx)
1363 {
1364 team->notify_peers.interval = ctx->data.u32_val;
1365 return 0;
1366 }
1367
1368 static int team_mcast_rejoin_count_get(struct team *team,
1369 struct team_gsetter_ctx *ctx)
1370 {
1371 ctx->data.u32_val = team->mcast_rejoin.count;
1372 return 0;
1373 }
1374
1375 static int team_mcast_rejoin_count_set(struct team *team,
1376 struct team_gsetter_ctx *ctx)
1377 {
1378 team->mcast_rejoin.count = ctx->data.u32_val;
1379 return 0;
1380 }
1381
1382 static int team_mcast_rejoin_interval_get(struct team *team,
1383 struct team_gsetter_ctx *ctx)
1384 {
1385 ctx->data.u32_val = team->mcast_rejoin.interval;
1386 return 0;
1387 }
1388
1389 static int team_mcast_rejoin_interval_set(struct team *team,
1390 struct team_gsetter_ctx *ctx)
1391 {
1392 team->mcast_rejoin.interval = ctx->data.u32_val;
1393 return 0;
1394 }
1395
1396 static int team_port_en_option_get(struct team *team,
1397 struct team_gsetter_ctx *ctx)
1398 {
1399 struct team_port *port = ctx->info->port;
1400
1401 ctx->data.bool_val = team_port_enabled(port);
1402 return 0;
1403 }
1404
1405 static int team_port_en_option_set(struct team *team,
1406 struct team_gsetter_ctx *ctx)
1407 {
1408 struct team_port *port = ctx->info->port;
1409
1410 if (ctx->data.bool_val)
1411 team_port_enable(team, port);
1412 else
1413 team_port_disable(team, port);
1414 return 0;
1415 }
1416
1417 static int team_user_linkup_option_get(struct team *team,
1418 struct team_gsetter_ctx *ctx)
1419 {
1420 struct team_port *port = ctx->info->port;
1421
1422 ctx->data.bool_val = port->user.linkup;
1423 return 0;
1424 }
1425
1426 static void __team_carrier_check(struct team *team);
1427
1428 static int team_user_linkup_option_set(struct team *team,
1429 struct team_gsetter_ctx *ctx)
1430 {
1431 struct team_port *port = ctx->info->port;
1432
1433 port->user.linkup = ctx->data.bool_val;
1434 team_refresh_port_linkup(port);
1435 __team_carrier_check(port->team);
1436 return 0;
1437 }
1438
1439 static int team_user_linkup_en_option_get(struct team *team,
1440 struct team_gsetter_ctx *ctx)
1441 {
1442 struct team_port *port = ctx->info->port;
1443
1444 ctx->data.bool_val = port->user.linkup_enabled;
1445 return 0;
1446 }
1447
1448 static int team_user_linkup_en_option_set(struct team *team,
1449 struct team_gsetter_ctx *ctx)
1450 {
1451 struct team_port *port = ctx->info->port;
1452
1453 port->user.linkup_enabled = ctx->data.bool_val;
1454 team_refresh_port_linkup(port);
1455 __team_carrier_check(port->team);
1456 return 0;
1457 }
1458
1459 static int team_priority_option_get(struct team *team,
1460 struct team_gsetter_ctx *ctx)
1461 {
1462 struct team_port *port = ctx->info->port;
1463
1464 ctx->data.s32_val = port->priority;
1465 return 0;
1466 }
1467
1468 static int team_priority_option_set(struct team *team,
1469 struct team_gsetter_ctx *ctx)
1470 {
1471 struct team_port *port = ctx->info->port;
1472 s32 priority = ctx->data.s32_val;
1473
1474 if (port->priority == priority)
1475 return 0;
1476 port->priority = priority;
1477 team_queue_override_port_prio_changed(team, port);
1478 return 0;
1479 }
1480
1481 static int team_queue_id_option_get(struct team *team,
1482 struct team_gsetter_ctx *ctx)
1483 {
1484 struct team_port *port = ctx->info->port;
1485
1486 ctx->data.u32_val = port->queue_id;
1487 return 0;
1488 }
1489
1490 static int team_queue_id_option_set(struct team *team,
1491 struct team_gsetter_ctx *ctx)
1492 {
1493 struct team_port *port = ctx->info->port;
1494 u16 new_queue_id = ctx->data.u32_val;
1495
1496 if (port->queue_id == new_queue_id)
1497 return 0;
1498 if (new_queue_id >= team->dev->real_num_tx_queues)
1499 return -EINVAL;
1500 team_queue_override_port_change_queue_id(team, port, new_queue_id);
1501 return 0;
1502 }
1503
1504 static const struct team_option team_options[] = {
1505 {
1506 .name = "mode",
1507 .type = TEAM_OPTION_TYPE_STRING,
1508 .getter = team_mode_option_get,
1509 .setter = team_mode_option_set,
1510 },
1511 {
1512 .name = "notify_peers_count",
1513 .type = TEAM_OPTION_TYPE_U32,
1514 .getter = team_notify_peers_count_get,
1515 .setter = team_notify_peers_count_set,
1516 },
1517 {
1518 .name = "notify_peers_interval",
1519 .type = TEAM_OPTION_TYPE_U32,
1520 .getter = team_notify_peers_interval_get,
1521 .setter = team_notify_peers_interval_set,
1522 },
1523 {
1524 .name = "mcast_rejoin_count",
1525 .type = TEAM_OPTION_TYPE_U32,
1526 .getter = team_mcast_rejoin_count_get,
1527 .setter = team_mcast_rejoin_count_set,
1528 },
1529 {
1530 .name = "mcast_rejoin_interval",
1531 .type = TEAM_OPTION_TYPE_U32,
1532 .getter = team_mcast_rejoin_interval_get,
1533 .setter = team_mcast_rejoin_interval_set,
1534 },
1535 {
1536 .name = "enabled",
1537 .type = TEAM_OPTION_TYPE_BOOL,
1538 .per_port = true,
1539 .getter = team_port_en_option_get,
1540 .setter = team_port_en_option_set,
1541 },
1542 {
1543 .name = "user_linkup",
1544 .type = TEAM_OPTION_TYPE_BOOL,
1545 .per_port = true,
1546 .getter = team_user_linkup_option_get,
1547 .setter = team_user_linkup_option_set,
1548 },
1549 {
1550 .name = "user_linkup_enabled",
1551 .type = TEAM_OPTION_TYPE_BOOL,
1552 .per_port = true,
1553 .getter = team_user_linkup_en_option_get,
1554 .setter = team_user_linkup_en_option_set,
1555 },
1556 {
1557 .name = "priority",
1558 .type = TEAM_OPTION_TYPE_S32,
1559 .per_port = true,
1560 .getter = team_priority_option_get,
1561 .setter = team_priority_option_set,
1562 },
1563 {
1564 .name = "queue_id",
1565 .type = TEAM_OPTION_TYPE_U32,
1566 .per_port = true,
1567 .getter = team_queue_id_option_get,
1568 .setter = team_queue_id_option_set,
1569 },
1570 };
1571
1572 static struct lock_class_key team_netdev_xmit_lock_key;
1573 static struct lock_class_key team_netdev_addr_lock_key;
1574 static struct lock_class_key team_tx_busylock_key;
1575
1576 static void team_set_lockdep_class_one(struct net_device *dev,
1577 struct netdev_queue *txq,
1578 void *unused)
1579 {
1580 lockdep_set_class(&txq->_xmit_lock, &team_netdev_xmit_lock_key);
1581 }
1582
1583 static void team_set_lockdep_class(struct net_device *dev)
1584 {
1585 lockdep_set_class(&dev->addr_list_lock, &team_netdev_addr_lock_key);
1586 netdev_for_each_tx_queue(dev, team_set_lockdep_class_one, NULL);
1587 dev->qdisc_tx_busylock = &team_tx_busylock_key;
1588 }
1589
1590 static int team_init(struct net_device *dev)
1591 {
1592 struct team *team = netdev_priv(dev);
1593 int i;
1594 int err;
1595
1596 team->dev = dev;
1597 mutex_init(&team->lock);
1598 team_set_no_mode(team);
1599
1600 team->pcpu_stats = netdev_alloc_pcpu_stats(struct team_pcpu_stats);
1601 if (!team->pcpu_stats)
1602 return -ENOMEM;
1603
1604 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
1605 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
1606 INIT_LIST_HEAD(&team->port_list);
1607 err = team_queue_override_init(team);
1608 if (err)
1609 goto err_team_queue_override_init;
1610
1611 team_adjust_ops(team);
1612
1613 INIT_LIST_HEAD(&team->option_list);
1614 INIT_LIST_HEAD(&team->option_inst_list);
1615
1616 team_notify_peers_init(team);
1617 team_mcast_rejoin_init(team);
1618
1619 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1620 if (err)
1621 goto err_options_register;
1622 netif_carrier_off(dev);
1623
1624 team_set_lockdep_class(dev);
1625
1626 return 0;
1627
1628 err_options_register:
1629 team_mcast_rejoin_fini(team);
1630 team_notify_peers_fini(team);
1631 team_queue_override_fini(team);
1632 err_team_queue_override_init:
1633 free_percpu(team->pcpu_stats);
1634
1635 return err;
1636 }
1637
1638 static void team_uninit(struct net_device *dev)
1639 {
1640 struct team *team = netdev_priv(dev);
1641 struct team_port *port;
1642 struct team_port *tmp;
1643
1644 mutex_lock(&team->lock);
1645 list_for_each_entry_safe(port, tmp, &team->port_list, list)
1646 team_port_del(team, port->dev);
1647
1648 __team_change_mode(team, NULL); /* cleanup */
1649 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
1650 team_mcast_rejoin_fini(team);
1651 team_notify_peers_fini(team);
1652 team_queue_override_fini(team);
1653 mutex_unlock(&team->lock);
1654 }
1655
1656 static void team_destructor(struct net_device *dev)
1657 {
1658 struct team *team = netdev_priv(dev);
1659
1660 free_percpu(team->pcpu_stats);
1661 free_netdev(dev);
1662 }
1663
1664 static int team_open(struct net_device *dev)
1665 {
1666 return 0;
1667 }
1668
1669 static int team_close(struct net_device *dev)
1670 {
1671 return 0;
1672 }
1673
1674 /*
1675 * note: already called with rcu_read_lock
1676 */
1677 static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1678 {
1679 struct team *team = netdev_priv(dev);
1680 bool tx_success;
1681 unsigned int len = skb->len;
1682
1683 tx_success = team_queue_override_transmit(team, skb);
1684 if (!tx_success)
1685 tx_success = team->ops.transmit(team, skb);
1686 if (tx_success) {
1687 struct team_pcpu_stats *pcpu_stats;
1688
1689 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1690 u64_stats_update_begin(&pcpu_stats->syncp);
1691 pcpu_stats->tx_packets++;
1692 pcpu_stats->tx_bytes += len;
1693 u64_stats_update_end(&pcpu_stats->syncp);
1694 } else {
1695 this_cpu_inc(team->pcpu_stats->tx_dropped);
1696 }
1697
1698 return NETDEV_TX_OK;
1699 }
1700
1701 static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb,
1702 void *accel_priv, select_queue_fallback_t fallback)
1703 {
1704 /*
1705 * This helper function exists to help dev_pick_tx get the correct
1706 * destination queue. Using a helper function skips a call to
1707 * skb_tx_hash and will put the skbs in the queue we expect on their
1708 * way down to the team driver.
1709 */
1710 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1711
1712 /*
1713 * Save the original txq to restore before passing to the driver
1714 */
1715 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1716
1717 if (unlikely(txq >= dev->real_num_tx_queues)) {
1718 do {
1719 txq -= dev->real_num_tx_queues;
1720 } while (txq >= dev->real_num_tx_queues);
1721 }
1722 return txq;
1723 }
1724
1725 static void team_change_rx_flags(struct net_device *dev, int change)
1726 {
1727 struct team *team = netdev_priv(dev);
1728 struct team_port *port;
1729 int inc;
1730
1731 rcu_read_lock();
1732 list_for_each_entry_rcu(port, &team->port_list, list) {
1733 if (change & IFF_PROMISC) {
1734 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1735 dev_set_promiscuity(port->dev, inc);
1736 }
1737 if (change & IFF_ALLMULTI) {
1738 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1739 dev_set_allmulti(port->dev, inc);
1740 }
1741 }
1742 rcu_read_unlock();
1743 }
1744
1745 static void team_set_rx_mode(struct net_device *dev)
1746 {
1747 struct team *team = netdev_priv(dev);
1748 struct team_port *port;
1749
1750 rcu_read_lock();
1751 list_for_each_entry_rcu(port, &team->port_list, list) {
1752 dev_uc_sync_multiple(port->dev, dev);
1753 dev_mc_sync_multiple(port->dev, dev);
1754 }
1755 rcu_read_unlock();
1756 }
1757
1758 static int team_set_mac_address(struct net_device *dev, void *p)
1759 {
1760 struct sockaddr *addr = p;
1761 struct team *team = netdev_priv(dev);
1762 struct team_port *port;
1763
1764 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data))
1765 return -EADDRNOTAVAIL;
1766 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1767 mutex_lock(&team->lock);
1768 list_for_each_entry(port, &team->port_list, list)
1769 if (team->ops.port_change_dev_addr)
1770 team->ops.port_change_dev_addr(team, port);
1771 mutex_unlock(&team->lock);
1772 return 0;
1773 }
1774
1775 static int team_change_mtu(struct net_device *dev, int new_mtu)
1776 {
1777 struct team *team = netdev_priv(dev);
1778 struct team_port *port;
1779 int err;
1780
1781 /*
1782 * Alhough this is reader, it's guarded by team lock. It's not possible
1783 * to traverse list in reverse under rcu_read_lock
1784 */
1785 mutex_lock(&team->lock);
1786 team->port_mtu_change_allowed = true;
1787 list_for_each_entry(port, &team->port_list, list) {
1788 err = dev_set_mtu(port->dev, new_mtu);
1789 if (err) {
1790 netdev_err(dev, "Device %s failed to change mtu",
1791 port->dev->name);
1792 goto unwind;
1793 }
1794 }
1795 team->port_mtu_change_allowed = false;
1796 mutex_unlock(&team->lock);
1797
1798 dev->mtu = new_mtu;
1799
1800 return 0;
1801
1802 unwind:
1803 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1804 dev_set_mtu(port->dev, dev->mtu);
1805 team->port_mtu_change_allowed = false;
1806 mutex_unlock(&team->lock);
1807
1808 return err;
1809 }
1810
1811 static struct rtnl_link_stats64 *
1812 team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1813 {
1814 struct team *team = netdev_priv(dev);
1815 struct team_pcpu_stats *p;
1816 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1817 u32 rx_dropped = 0, tx_dropped = 0, rx_nohandler = 0;
1818 unsigned int start;
1819 int i;
1820
1821 for_each_possible_cpu(i) {
1822 p = per_cpu_ptr(team->pcpu_stats, i);
1823 do {
1824 start = u64_stats_fetch_begin_irq(&p->syncp);
1825 rx_packets = p->rx_packets;
1826 rx_bytes = p->rx_bytes;
1827 rx_multicast = p->rx_multicast;
1828 tx_packets = p->tx_packets;
1829 tx_bytes = p->tx_bytes;
1830 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
1831
1832 stats->rx_packets += rx_packets;
1833 stats->rx_bytes += rx_bytes;
1834 stats->multicast += rx_multicast;
1835 stats->tx_packets += tx_packets;
1836 stats->tx_bytes += tx_bytes;
1837 /*
1838 * rx_dropped, tx_dropped & rx_nohandler are u32,
1839 * updated without syncp protection.
1840 */
1841 rx_dropped += p->rx_dropped;
1842 tx_dropped += p->tx_dropped;
1843 rx_nohandler += p->rx_nohandler;
1844 }
1845 stats->rx_dropped = rx_dropped;
1846 stats->tx_dropped = tx_dropped;
1847 stats->rx_nohandler = rx_nohandler;
1848 return stats;
1849 }
1850
1851 static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
1852 {
1853 struct team *team = netdev_priv(dev);
1854 struct team_port *port;
1855 int err;
1856
1857 /*
1858 * Alhough this is reader, it's guarded by team lock. It's not possible
1859 * to traverse list in reverse under rcu_read_lock
1860 */
1861 mutex_lock(&team->lock);
1862 list_for_each_entry(port, &team->port_list, list) {
1863 err = vlan_vid_add(port->dev, proto, vid);
1864 if (err)
1865 goto unwind;
1866 }
1867 mutex_unlock(&team->lock);
1868
1869 return 0;
1870
1871 unwind:
1872 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1873 vlan_vid_del(port->dev, proto, vid);
1874 mutex_unlock(&team->lock);
1875
1876 return err;
1877 }
1878
1879 static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
1880 {
1881 struct team *team = netdev_priv(dev);
1882 struct team_port *port;
1883
1884 mutex_lock(&team->lock);
1885 list_for_each_entry(port, &team->port_list, list)
1886 vlan_vid_del(port->dev, proto, vid);
1887 mutex_unlock(&team->lock);
1888
1889 return 0;
1890 }
1891
1892 #ifdef CONFIG_NET_POLL_CONTROLLER
1893 static void team_poll_controller(struct net_device *dev)
1894 {
1895 }
1896
1897 static void __team_netpoll_cleanup(struct team *team)
1898 {
1899 struct team_port *port;
1900
1901 list_for_each_entry(port, &team->port_list, list)
1902 team_port_disable_netpoll(port);
1903 }
1904
1905 static void team_netpoll_cleanup(struct net_device *dev)
1906 {
1907 struct team *team = netdev_priv(dev);
1908
1909 mutex_lock(&team->lock);
1910 __team_netpoll_cleanup(team);
1911 mutex_unlock(&team->lock);
1912 }
1913
1914 static int team_netpoll_setup(struct net_device *dev,
1915 struct netpoll_info *npifo)
1916 {
1917 struct team *team = netdev_priv(dev);
1918 struct team_port *port;
1919 int err = 0;
1920
1921 mutex_lock(&team->lock);
1922 list_for_each_entry(port, &team->port_list, list) {
1923 err = team_port_enable_netpoll(team, port);
1924 if (err) {
1925 __team_netpoll_cleanup(team);
1926 break;
1927 }
1928 }
1929 mutex_unlock(&team->lock);
1930 return err;
1931 }
1932 #endif
1933
1934 static int team_add_slave(struct net_device *dev, struct net_device *port_dev)
1935 {
1936 struct team *team = netdev_priv(dev);
1937 int err;
1938
1939 mutex_lock(&team->lock);
1940 err = team_port_add(team, port_dev);
1941 mutex_unlock(&team->lock);
1942 return err;
1943 }
1944
1945 static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1946 {
1947 struct team *team = netdev_priv(dev);
1948 int err;
1949
1950 mutex_lock(&team->lock);
1951 err = team_port_del(team, port_dev);
1952 mutex_unlock(&team->lock);
1953 return err;
1954 }
1955
1956 static netdev_features_t team_fix_features(struct net_device *dev,
1957 netdev_features_t features)
1958 {
1959 struct team_port *port;
1960 struct team *team = netdev_priv(dev);
1961 netdev_features_t mask;
1962
1963 mask = features;
1964 features &= ~NETIF_F_ONE_FOR_ALL;
1965 features |= NETIF_F_ALL_FOR_ALL;
1966
1967 rcu_read_lock();
1968 list_for_each_entry_rcu(port, &team->port_list, list) {
1969 features = netdev_increment_features(features,
1970 port->dev->features,
1971 mask);
1972 }
1973 rcu_read_unlock();
1974
1975 features = netdev_add_tso_features(features, mask);
1976
1977 return features;
1978 }
1979
1980 static int team_change_carrier(struct net_device *dev, bool new_carrier)
1981 {
1982 struct team *team = netdev_priv(dev);
1983
1984 team->user_carrier_enabled = true;
1985
1986 if (new_carrier)
1987 netif_carrier_on(dev);
1988 else
1989 netif_carrier_off(dev);
1990 return 0;
1991 }
1992
1993 static const struct net_device_ops team_netdev_ops = {
1994 .ndo_init = team_init,
1995 .ndo_uninit = team_uninit,
1996 .ndo_open = team_open,
1997 .ndo_stop = team_close,
1998 .ndo_start_xmit = team_xmit,
1999 .ndo_select_queue = team_select_queue,
2000 .ndo_change_rx_flags = team_change_rx_flags,
2001 .ndo_set_rx_mode = team_set_rx_mode,
2002 .ndo_set_mac_address = team_set_mac_address,
2003 .ndo_change_mtu = team_change_mtu,
2004 .ndo_get_stats64 = team_get_stats64,
2005 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
2006 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
2007 #ifdef CONFIG_NET_POLL_CONTROLLER
2008 .ndo_poll_controller = team_poll_controller,
2009 .ndo_netpoll_setup = team_netpoll_setup,
2010 .ndo_netpoll_cleanup = team_netpoll_cleanup,
2011 #endif
2012 .ndo_add_slave = team_add_slave,
2013 .ndo_del_slave = team_del_slave,
2014 .ndo_fix_features = team_fix_features,
2015 .ndo_change_carrier = team_change_carrier,
2016 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
2017 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
2018 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
2019 .ndo_fdb_add = switchdev_port_fdb_add,
2020 .ndo_fdb_del = switchdev_port_fdb_del,
2021 .ndo_fdb_dump = switchdev_port_fdb_dump,
2022 .ndo_features_check = passthru_features_check,
2023 };
2024
2025 /***********************
2026 * ethtool interface
2027 ***********************/
2028
2029 static void team_ethtool_get_drvinfo(struct net_device *dev,
2030 struct ethtool_drvinfo *drvinfo)
2031 {
2032 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
2033 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
2034 }
2035
2036 static const struct ethtool_ops team_ethtool_ops = {
2037 .get_drvinfo = team_ethtool_get_drvinfo,
2038 .get_link = ethtool_op_get_link,
2039 };
2040
2041 /***********************
2042 * rt netlink interface
2043 ***********************/
2044
2045 static void team_setup_by_port(struct net_device *dev,
2046 struct net_device *port_dev)
2047 {
2048 dev->header_ops = port_dev->header_ops;
2049 dev->type = port_dev->type;
2050 dev->hard_header_len = port_dev->hard_header_len;
2051 dev->addr_len = port_dev->addr_len;
2052 dev->mtu = port_dev->mtu;
2053 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
2054 eth_hw_addr_inherit(dev, port_dev);
2055 }
2056
2057 static int team_dev_type_check_change(struct net_device *dev,
2058 struct net_device *port_dev)
2059 {
2060 struct team *team = netdev_priv(dev);
2061 char *portname = port_dev->name;
2062 int err;
2063
2064 if (dev->type == port_dev->type)
2065 return 0;
2066 if (!list_empty(&team->port_list)) {
2067 netdev_err(dev, "Device %s is of different type\n", portname);
2068 return -EBUSY;
2069 }
2070 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev);
2071 err = notifier_to_errno(err);
2072 if (err) {
2073 netdev_err(dev, "Refused to change device type\n");
2074 return err;
2075 }
2076 dev_uc_flush(dev);
2077 dev_mc_flush(dev);
2078 team_setup_by_port(dev, port_dev);
2079 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev);
2080 return 0;
2081 }
2082
2083 static void team_setup(struct net_device *dev)
2084 {
2085 ether_setup(dev);
2086
2087 dev->netdev_ops = &team_netdev_ops;
2088 dev->ethtool_ops = &team_ethtool_ops;
2089 dev->destructor = team_destructor;
2090 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
2091 dev->priv_flags |= IFF_NO_QUEUE;
2092 dev->priv_flags |= IFF_TEAM;
2093
2094 /*
2095 * Indicate we support unicast address filtering. That way core won't
2096 * bring us to promisc mode in case a unicast addr is added.
2097 * Let this up to underlay drivers.
2098 */
2099 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
2100
2101 dev->features |= NETIF_F_LLTX;
2102 dev->features |= NETIF_F_GRO;
2103
2104 /* Don't allow team devices to change network namespaces. */
2105 dev->features |= NETIF_F_NETNS_LOCAL;
2106
2107 dev->hw_features = TEAM_VLAN_FEATURES |
2108 NETIF_F_HW_VLAN_CTAG_TX |
2109 NETIF_F_HW_VLAN_CTAG_RX |
2110 NETIF_F_HW_VLAN_CTAG_FILTER;
2111
2112 dev->hw_features |= NETIF_F_GSO_ENCAP_ALL;
2113 dev->features |= dev->hw_features;
2114 }
2115
2116 static int team_newlink(struct net *src_net, struct net_device *dev,
2117 struct nlattr *tb[], struct nlattr *data[])
2118 {
2119 if (tb[IFLA_ADDRESS] == NULL)
2120 eth_hw_addr_random(dev);
2121
2122 return register_netdevice(dev);
2123 }
2124
2125 static int team_validate(struct nlattr *tb[], struct nlattr *data[])
2126 {
2127 if (tb[IFLA_ADDRESS]) {
2128 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
2129 return -EINVAL;
2130 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
2131 return -EADDRNOTAVAIL;
2132 }
2133 return 0;
2134 }
2135
2136 static unsigned int team_get_num_tx_queues(void)
2137 {
2138 return TEAM_DEFAULT_NUM_TX_QUEUES;
2139 }
2140
2141 static unsigned int team_get_num_rx_queues(void)
2142 {
2143 return TEAM_DEFAULT_NUM_RX_QUEUES;
2144 }
2145
2146 static struct rtnl_link_ops team_link_ops __read_mostly = {
2147 .kind = DRV_NAME,
2148 .priv_size = sizeof(struct team),
2149 .setup = team_setup,
2150 .newlink = team_newlink,
2151 .validate = team_validate,
2152 .get_num_tx_queues = team_get_num_tx_queues,
2153 .get_num_rx_queues = team_get_num_rx_queues,
2154 };
2155
2156
2157 /***********************************
2158 * Generic netlink custom interface
2159 ***********************************/
2160
2161 static struct genl_family team_nl_family = {
2162 .id = GENL_ID_GENERATE,
2163 .name = TEAM_GENL_NAME,
2164 .version = TEAM_GENL_VERSION,
2165 .maxattr = TEAM_ATTR_MAX,
2166 .netnsok = true,
2167 };
2168
2169 static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
2170 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
2171 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
2172 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
2173 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
2174 };
2175
2176 static const struct nla_policy
2177 team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
2178 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
2179 [TEAM_ATTR_OPTION_NAME] = {
2180 .type = NLA_STRING,
2181 .len = TEAM_STRING_MAX_LEN,
2182 },
2183 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
2184 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
2185 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
2186 };
2187
2188 static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
2189 {
2190 struct sk_buff *msg;
2191 void *hdr;
2192 int err;
2193
2194 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2195 if (!msg)
2196 return -ENOMEM;
2197
2198 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
2199 &team_nl_family, 0, TEAM_CMD_NOOP);
2200 if (!hdr) {
2201 err = -EMSGSIZE;
2202 goto err_msg_put;
2203 }
2204
2205 genlmsg_end(msg, hdr);
2206
2207 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid);
2208
2209 err_msg_put:
2210 nlmsg_free(msg);
2211
2212 return err;
2213 }
2214
2215 /*
2216 * Netlink cmd functions should be locked by following two functions.
2217 * Since dev gets held here, that ensures dev won't disappear in between.
2218 */
2219 static struct team *team_nl_team_get(struct genl_info *info)
2220 {
2221 struct net *net = genl_info_net(info);
2222 int ifindex;
2223 struct net_device *dev;
2224 struct team *team;
2225
2226 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
2227 return NULL;
2228
2229 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
2230 dev = dev_get_by_index(net, ifindex);
2231 if (!dev || dev->netdev_ops != &team_netdev_ops) {
2232 if (dev)
2233 dev_put(dev);
2234 return NULL;
2235 }
2236
2237 team = netdev_priv(dev);
2238 mutex_lock(&team->lock);
2239 return team;
2240 }
2241
2242 static void team_nl_team_put(struct team *team)
2243 {
2244 mutex_unlock(&team->lock);
2245 dev_put(team->dev);
2246 }
2247
2248 typedef int team_nl_send_func_t(struct sk_buff *skb,
2249 struct team *team, u32 portid);
2250
2251 static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid)
2252 {
2253 return genlmsg_unicast(dev_net(team->dev), skb, portid);
2254 }
2255
2256 static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
2257 struct team_option_inst *opt_inst)
2258 {
2259 struct nlattr *option_item;
2260 struct team_option *option = opt_inst->option;
2261 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
2262 struct team_gsetter_ctx ctx;
2263 int err;
2264
2265 ctx.info = opt_inst_info;
2266 err = team_option_get(team, opt_inst, &ctx);
2267 if (err)
2268 return err;
2269
2270 option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
2271 if (!option_item)
2272 return -EMSGSIZE;
2273
2274 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
2275 goto nest_cancel;
2276 if (opt_inst_info->port &&
2277 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
2278 opt_inst_info->port->dev->ifindex))
2279 goto nest_cancel;
2280 if (opt_inst->option->array_size &&
2281 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
2282 opt_inst_info->array_index))
2283 goto nest_cancel;
2284
2285 switch (option->type) {
2286 case TEAM_OPTION_TYPE_U32:
2287 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
2288 goto nest_cancel;
2289 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
2290 goto nest_cancel;
2291 break;
2292 case TEAM_OPTION_TYPE_STRING:
2293 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
2294 goto nest_cancel;
2295 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
2296 ctx.data.str_val))
2297 goto nest_cancel;
2298 break;
2299 case TEAM_OPTION_TYPE_BINARY:
2300 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
2301 goto nest_cancel;
2302 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
2303 ctx.data.bin_val.ptr))
2304 goto nest_cancel;
2305 break;
2306 case TEAM_OPTION_TYPE_BOOL:
2307 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
2308 goto nest_cancel;
2309 if (ctx.data.bool_val &&
2310 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
2311 goto nest_cancel;
2312 break;
2313 case TEAM_OPTION_TYPE_S32:
2314 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32))
2315 goto nest_cancel;
2316 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val))
2317 goto nest_cancel;
2318 break;
2319 default:
2320 BUG();
2321 }
2322 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
2323 goto nest_cancel;
2324 if (opt_inst->changed) {
2325 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
2326 goto nest_cancel;
2327 opt_inst->changed = false;
2328 }
2329 nla_nest_end(skb, option_item);
2330 return 0;
2331
2332 nest_cancel:
2333 nla_nest_cancel(skb, option_item);
2334 return -EMSGSIZE;
2335 }
2336
2337 static int __send_and_alloc_skb(struct sk_buff **pskb,
2338 struct team *team, u32 portid,
2339 team_nl_send_func_t *send_func)
2340 {
2341 int err;
2342
2343 if (*pskb) {
2344 err = send_func(*pskb, team, portid);
2345 if (err)
2346 return err;
2347 }
2348 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2349 if (!*pskb)
2350 return -ENOMEM;
2351 return 0;
2352 }
2353
2354 static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
2355 int flags, team_nl_send_func_t *send_func,
2356 struct list_head *sel_opt_inst_list)
2357 {
2358 struct nlattr *option_list;
2359 struct nlmsghdr *nlh;
2360 void *hdr;
2361 struct team_option_inst *opt_inst;
2362 int err;
2363 struct sk_buff *skb = NULL;
2364 bool incomplete;
2365 int i;
2366
2367 opt_inst = list_first_entry(sel_opt_inst_list,
2368 struct team_option_inst, tmp_list);
2369
2370 start_again:
2371 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2372 if (err)
2373 return err;
2374
2375 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2376 TEAM_CMD_OPTIONS_GET);
2377 if (!hdr)
2378 return -EMSGSIZE;
2379
2380 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2381 goto nla_put_failure;
2382 option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION);
2383 if (!option_list)
2384 goto nla_put_failure;
2385
2386 i = 0;
2387 incomplete = false;
2388 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
2389 err = team_nl_fill_one_option_get(skb, team, opt_inst);
2390 if (err) {
2391 if (err == -EMSGSIZE) {
2392 if (!i)
2393 goto errout;
2394 incomplete = true;
2395 break;
2396 }
2397 goto errout;
2398 }
2399 i++;
2400 }
2401
2402 nla_nest_end(skb, option_list);
2403 genlmsg_end(skb, hdr);
2404 if (incomplete)
2405 goto start_again;
2406
2407 send_done:
2408 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2409 if (!nlh) {
2410 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2411 if (err)
2412 goto errout;
2413 goto send_done;
2414 }
2415
2416 return send_func(skb, team, portid);
2417
2418 nla_put_failure:
2419 err = -EMSGSIZE;
2420 errout:
2421 genlmsg_cancel(skb, hdr);
2422 nlmsg_free(skb);
2423 return err;
2424 }
2425
2426 static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
2427 {
2428 struct team *team;
2429 struct team_option_inst *opt_inst;
2430 int err;
2431 LIST_HEAD(sel_opt_inst_list);
2432
2433 team = team_nl_team_get(info);
2434 if (!team)
2435 return -EINVAL;
2436
2437 list_for_each_entry(opt_inst, &team->option_inst_list, list)
2438 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2439 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq,
2440 NLM_F_ACK, team_nl_send_unicast,
2441 &sel_opt_inst_list);
2442
2443 team_nl_team_put(team);
2444
2445 return err;
2446 }
2447
2448 static int team_nl_send_event_options_get(struct team *team,
2449 struct list_head *sel_opt_inst_list);
2450
2451 static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
2452 {
2453 struct team *team;
2454 int err = 0;
2455 int i;
2456 struct nlattr *nl_option;
2457 LIST_HEAD(opt_inst_list);
2458
2459 rtnl_lock();
2460
2461 team = team_nl_team_get(info);
2462 if (!team) {
2463 err = -EINVAL;
2464 goto rtnl_unlock;
2465 }
2466
2467 err = -EINVAL;
2468 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
2469 err = -EINVAL;
2470 goto team_put;
2471 }
2472
2473 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
2474 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
2475 struct nlattr *attr;
2476 struct nlattr *attr_data;
2477 enum team_option_type opt_type;
2478 int opt_port_ifindex = 0; /* != 0 for per-port options */
2479 u32 opt_array_index = 0;
2480 bool opt_is_array = false;
2481 struct team_option_inst *opt_inst;
2482 char *opt_name;
2483 bool opt_found = false;
2484
2485 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
2486 err = -EINVAL;
2487 goto team_put;
2488 }
2489 err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX,
2490 nl_option, team_nl_option_policy);
2491 if (err)
2492 goto team_put;
2493 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
2494 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
2495 err = -EINVAL;
2496 goto team_put;
2497 }
2498 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
2499 case NLA_U32:
2500 opt_type = TEAM_OPTION_TYPE_U32;
2501 break;
2502 case NLA_STRING:
2503 opt_type = TEAM_OPTION_TYPE_STRING;
2504 break;
2505 case NLA_BINARY:
2506 opt_type = TEAM_OPTION_TYPE_BINARY;
2507 break;
2508 case NLA_FLAG:
2509 opt_type = TEAM_OPTION_TYPE_BOOL;
2510 break;
2511 case NLA_S32:
2512 opt_type = TEAM_OPTION_TYPE_S32;
2513 break;
2514 default:
2515 goto team_put;
2516 }
2517
2518 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
2519 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
2520 err = -EINVAL;
2521 goto team_put;
2522 }
2523
2524 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
2525 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
2526 if (attr)
2527 opt_port_ifindex = nla_get_u32(attr);
2528
2529 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
2530 if (attr) {
2531 opt_is_array = true;
2532 opt_array_index = nla_get_u32(attr);
2533 }
2534
2535 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2536 struct team_option *option = opt_inst->option;
2537 struct team_gsetter_ctx ctx;
2538 struct team_option_inst_info *opt_inst_info;
2539 int tmp_ifindex;
2540
2541 opt_inst_info = &opt_inst->info;
2542 tmp_ifindex = opt_inst_info->port ?
2543 opt_inst_info->port->dev->ifindex : 0;
2544 if (option->type != opt_type ||
2545 strcmp(option->name, opt_name) ||
2546 tmp_ifindex != opt_port_ifindex ||
2547 (option->array_size && !opt_is_array) ||
2548 opt_inst_info->array_index != opt_array_index)
2549 continue;
2550 opt_found = true;
2551 ctx.info = opt_inst_info;
2552 switch (opt_type) {
2553 case TEAM_OPTION_TYPE_U32:
2554 ctx.data.u32_val = nla_get_u32(attr_data);
2555 break;
2556 case TEAM_OPTION_TYPE_STRING:
2557 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2558 err = -EINVAL;
2559 goto team_put;
2560 }
2561 ctx.data.str_val = nla_data(attr_data);
2562 break;
2563 case TEAM_OPTION_TYPE_BINARY:
2564 ctx.data.bin_val.len = nla_len(attr_data);
2565 ctx.data.bin_val.ptr = nla_data(attr_data);
2566 break;
2567 case TEAM_OPTION_TYPE_BOOL:
2568 ctx.data.bool_val = attr_data ? true : false;
2569 break;
2570 case TEAM_OPTION_TYPE_S32:
2571 ctx.data.s32_val = nla_get_s32(attr_data);
2572 break;
2573 default:
2574 BUG();
2575 }
2576 err = team_option_set(team, opt_inst, &ctx);
2577 if (err)
2578 goto team_put;
2579 opt_inst->changed = true;
2580 list_add(&opt_inst->tmp_list, &opt_inst_list);
2581 }
2582 if (!opt_found) {
2583 err = -ENOENT;
2584 goto team_put;
2585 }
2586 }
2587
2588 err = team_nl_send_event_options_get(team, &opt_inst_list);
2589
2590 team_put:
2591 team_nl_team_put(team);
2592 rtnl_unlock:
2593 rtnl_unlock();
2594 return err;
2595 }
2596
2597 static int team_nl_fill_one_port_get(struct sk_buff *skb,
2598 struct team_port *port)
2599 {
2600 struct nlattr *port_item;
2601
2602 port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT);
2603 if (!port_item)
2604 goto nest_cancel;
2605 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2606 goto nest_cancel;
2607 if (port->changed) {
2608 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2609 goto nest_cancel;
2610 port->changed = false;
2611 }
2612 if ((port->removed &&
2613 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2614 (port->state.linkup &&
2615 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2616 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2617 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2618 goto nest_cancel;
2619 nla_nest_end(skb, port_item);
2620 return 0;
2621
2622 nest_cancel:
2623 nla_nest_cancel(skb, port_item);
2624 return -EMSGSIZE;
2625 }
2626
2627 static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,
2628 int flags, team_nl_send_func_t *send_func,
2629 struct team_port *one_port)
2630 {
2631 struct nlattr *port_list;
2632 struct nlmsghdr *nlh;
2633 void *hdr;
2634 struct team_port *port;
2635 int err;
2636 struct sk_buff *skb = NULL;
2637 bool incomplete;
2638 int i;
2639
2640 port = list_first_entry_or_null(&team->port_list,
2641 struct team_port, list);
2642
2643 start_again:
2644 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2645 if (err)
2646 return err;
2647
2648 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2649 TEAM_CMD_PORT_LIST_GET);
2650 if (!hdr)
2651 return -EMSGSIZE;
2652
2653 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2654 goto nla_put_failure;
2655 port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT);
2656 if (!port_list)
2657 goto nla_put_failure;
2658
2659 i = 0;
2660 incomplete = false;
2661
2662 /* If one port is selected, called wants to send port list containing
2663 * only this port. Otherwise go through all listed ports and send all
2664 */
2665 if (one_port) {
2666 err = team_nl_fill_one_port_get(skb, one_port);
2667 if (err)
2668 goto errout;
2669 } else if (port) {
2670 list_for_each_entry_from(port, &team->port_list, list) {
2671 err = team_nl_fill_one_port_get(skb, port);
2672 if (err) {
2673 if (err == -EMSGSIZE) {
2674 if (!i)
2675 goto errout;
2676 incomplete = true;
2677 break;
2678 }
2679 goto errout;
2680 }
2681 i++;
2682 }
2683 }
2684
2685 nla_nest_end(skb, port_list);
2686 genlmsg_end(skb, hdr);
2687 if (incomplete)
2688 goto start_again;
2689
2690 send_done:
2691 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2692 if (!nlh) {
2693 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2694 if (err)
2695 goto errout;
2696 goto send_done;
2697 }
2698
2699 return send_func(skb, team, portid);
2700
2701 nla_put_failure:
2702 err = -EMSGSIZE;
2703 errout:
2704 genlmsg_cancel(skb, hdr);
2705 nlmsg_free(skb);
2706 return err;
2707 }
2708
2709 static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2710 struct genl_info *info)
2711 {
2712 struct team *team;
2713 int err;
2714
2715 team = team_nl_team_get(info);
2716 if (!team)
2717 return -EINVAL;
2718
2719 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq,
2720 NLM_F_ACK, team_nl_send_unicast, NULL);
2721
2722 team_nl_team_put(team);
2723
2724 return err;
2725 }
2726
2727 static const struct genl_ops team_nl_ops[] = {
2728 {
2729 .cmd = TEAM_CMD_NOOP,
2730 .doit = team_nl_cmd_noop,
2731 .policy = team_nl_policy,
2732 },
2733 {
2734 .cmd = TEAM_CMD_OPTIONS_SET,
2735 .doit = team_nl_cmd_options_set,
2736 .policy = team_nl_policy,
2737 .flags = GENL_ADMIN_PERM,
2738 },
2739 {
2740 .cmd = TEAM_CMD_OPTIONS_GET,
2741 .doit = team_nl_cmd_options_get,
2742 .policy = team_nl_policy,
2743 .flags = GENL_ADMIN_PERM,
2744 },
2745 {
2746 .cmd = TEAM_CMD_PORT_LIST_GET,
2747 .doit = team_nl_cmd_port_list_get,
2748 .policy = team_nl_policy,
2749 .flags = GENL_ADMIN_PERM,
2750 },
2751 };
2752
2753 static const struct genl_multicast_group team_nl_mcgrps[] = {
2754 { .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, },
2755 };
2756
2757 static int team_nl_send_multicast(struct sk_buff *skb,
2758 struct team *team, u32 portid)
2759 {
2760 return genlmsg_multicast_netns(&team_nl_family, dev_net(team->dev),
2761 skb, 0, 0, GFP_KERNEL);
2762 }
2763
2764 static int team_nl_send_event_options_get(struct team *team,
2765 struct list_head *sel_opt_inst_list)
2766 {
2767 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2768 sel_opt_inst_list);
2769 }
2770
2771 static int team_nl_send_event_port_get(struct team *team,
2772 struct team_port *port)
2773 {
2774 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast,
2775 port);
2776 }
2777
2778 static int team_nl_init(void)
2779 {
2780 return genl_register_family_with_ops_groups(&team_nl_family, team_nl_ops,
2781 team_nl_mcgrps);
2782 }
2783
2784 static void team_nl_fini(void)
2785 {
2786 genl_unregister_family(&team_nl_family);
2787 }
2788
2789
2790 /******************
2791 * Change checkers
2792 ******************/
2793
2794 static void __team_options_change_check(struct team *team)
2795 {
2796 int err;
2797 struct team_option_inst *opt_inst;
2798 LIST_HEAD(sel_opt_inst_list);
2799
2800 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2801 if (opt_inst->changed)
2802 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2803 }
2804 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
2805 if (err && err != -ESRCH)
2806 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2807 err);
2808 }
2809
2810 /* rtnl lock is held */
2811
2812 static void __team_port_change_send(struct team_port *port, bool linkup)
2813 {
2814 int err;
2815
2816 port->changed = true;
2817 port->state.linkup = linkup;
2818 team_refresh_port_linkup(port);
2819 if (linkup) {
2820 struct ethtool_link_ksettings ecmd;
2821
2822 err = __ethtool_get_link_ksettings(port->dev, &ecmd);
2823 if (!err) {
2824 port->state.speed = ecmd.base.speed;
2825 port->state.duplex = ecmd.base.duplex;
2826 goto send_event;
2827 }
2828 }
2829 port->state.speed = 0;
2830 port->state.duplex = 0;
2831
2832 send_event:
2833 err = team_nl_send_event_port_get(port->team, port);
2834 if (err && err != -ESRCH)
2835 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
2836 port->dev->name, err);
2837
2838 }
2839
2840 static void __team_carrier_check(struct team *team)
2841 {
2842 struct team_port *port;
2843 bool team_linkup;
2844
2845 if (team->user_carrier_enabled)
2846 return;
2847
2848 team_linkup = false;
2849 list_for_each_entry(port, &team->port_list, list) {
2850 if (port->linkup) {
2851 team_linkup = true;
2852 break;
2853 }
2854 }
2855
2856 if (team_linkup)
2857 netif_carrier_on(team->dev);
2858 else
2859 netif_carrier_off(team->dev);
2860 }
2861
2862 static void __team_port_change_check(struct team_port *port, bool linkup)
2863 {
2864 if (port->state.linkup != linkup)
2865 __team_port_change_send(port, linkup);
2866 __team_carrier_check(port->team);
2867 }
2868
2869 static void __team_port_change_port_added(struct team_port *port, bool linkup)
2870 {
2871 __team_port_change_send(port, linkup);
2872 __team_carrier_check(port->team);
2873 }
2874
2875 static void __team_port_change_port_removed(struct team_port *port)
2876 {
2877 port->removed = true;
2878 __team_port_change_send(port, false);
2879 __team_carrier_check(port->team);
2880 }
2881
2882 static void team_port_change_check(struct team_port *port, bool linkup)
2883 {
2884 struct team *team = port->team;
2885
2886 mutex_lock(&team->lock);
2887 __team_port_change_check(port, linkup);
2888 mutex_unlock(&team->lock);
2889 }
2890
2891
2892 /************************************
2893 * Net device notifier event handler
2894 ************************************/
2895
2896 static int team_device_event(struct notifier_block *unused,
2897 unsigned long event, void *ptr)
2898 {
2899 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2900 struct team_port *port;
2901
2902 port = team_port_get_rtnl(dev);
2903 if (!port)
2904 return NOTIFY_DONE;
2905
2906 switch (event) {
2907 case NETDEV_UP:
2908 if (netif_carrier_ok(dev))
2909 team_port_change_check(port, true);
2910 break;
2911 case NETDEV_DOWN:
2912 team_port_change_check(port, false);
2913 break;
2914 case NETDEV_CHANGE:
2915 if (netif_running(port->dev))
2916 team_port_change_check(port,
2917 !!netif_carrier_ok(port->dev));
2918 break;
2919 case NETDEV_UNREGISTER:
2920 team_del_slave(port->team->dev, dev);
2921 break;
2922 case NETDEV_FEAT_CHANGE:
2923 team_compute_features(port->team);
2924 break;
2925 case NETDEV_PRECHANGEMTU:
2926 /* Forbid to change mtu of underlaying device */
2927 if (!port->team->port_mtu_change_allowed)
2928 return NOTIFY_BAD;
2929 break;
2930 case NETDEV_PRE_TYPE_CHANGE:
2931 /* Forbid to change type of underlaying device */
2932 return NOTIFY_BAD;
2933 case NETDEV_RESEND_IGMP:
2934 /* Propagate to master device */
2935 call_netdevice_notifiers(event, port->team->dev);
2936 break;
2937 }
2938 return NOTIFY_DONE;
2939 }
2940
2941 static struct notifier_block team_notifier_block __read_mostly = {
2942 .notifier_call = team_device_event,
2943 };
2944
2945
2946 /***********************
2947 * Module init and exit
2948 ***********************/
2949
2950 static int __init team_module_init(void)
2951 {
2952 int err;
2953
2954 register_netdevice_notifier(&team_notifier_block);
2955
2956 err = rtnl_link_register(&team_link_ops);
2957 if (err)
2958 goto err_rtnl_reg;
2959
2960 err = team_nl_init();
2961 if (err)
2962 goto err_nl_init;
2963
2964 return 0;
2965
2966 err_nl_init:
2967 rtnl_link_unregister(&team_link_ops);
2968
2969 err_rtnl_reg:
2970 unregister_netdevice_notifier(&team_notifier_block);
2971
2972 return err;
2973 }
2974
2975 static void __exit team_module_exit(void)
2976 {
2977 team_nl_fini();
2978 rtnl_link_unregister(&team_link_ops);
2979 unregister_netdevice_notifier(&team_notifier_block);
2980 }
2981
2982 module_init(team_module_init);
2983 module_exit(team_module_exit);
2984
2985 MODULE_LICENSE("GPL v2");
2986 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
2987 MODULE_DESCRIPTION("Ethernet team device driver");
2988 MODULE_ALIAS_RTNL_LINK(DRV_NAME);
Linux with added FPC-III support