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dm writecache: add cond_resched to loop in persistent_memory_claim()
[linux/fpc-iii.git] / drivers / net / team / team.c
blob04845a4017f935f3cdff0fbbbc41d281ab641672
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * drivers/net/team/team.c - Network team device driver
4 * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
5 */
6
7 #include <linux/kernel.h>
8 #include <linux/types.h>
9 #include <linux/module.h>
10 #include <linux/init.h>
11 #include <linux/slab.h>
12 #include <linux/rcupdate.h>
13 #include <linux/errno.h>
14 #include <linux/ctype.h>
15 #include <linux/notifier.h>
16 #include <linux/netdevice.h>
17 #include <linux/netpoll.h>
18 #include <linux/if_vlan.h>
19 #include <linux/if_arp.h>
20 #include <linux/socket.h>
21 #include <linux/etherdevice.h>
22 #include <linux/rtnetlink.h>
23 #include <net/rtnetlink.h>
24 #include <net/genetlink.h>
25 #include <net/netlink.h>
26 #include <net/sch_generic.h>
27 #include <generated/utsrelease.h>
28 #include <linux/if_team.h>
29
30 #define DRV_NAME "team"
31
32
33 /**********
34 * Helpers
35 **********/
36
37 static struct team_port *team_port_get_rtnl(const struct net_device *dev)
38 {
39 struct team_port *port = rtnl_dereference(dev->rx_handler_data);
40
41 return netif_is_team_port(dev) ? port : NULL;
42 }
43
44 /*
45 * Since the ability to change device address for open port device is tested in
46 * team_port_add, this function can be called without control of return value
47 */
48 static int __set_port_dev_addr(struct net_device *port_dev,
49 const unsigned char *dev_addr)
50 {
51 struct sockaddr_storage addr;
52
53 memcpy(addr.__data, dev_addr, port_dev->addr_len);
54 addr.ss_family = port_dev->type;
55 return dev_set_mac_address(port_dev, (struct sockaddr *)&addr, NULL);
56 }
57
58 static int team_port_set_orig_dev_addr(struct team_port *port)
59 {
60 return __set_port_dev_addr(port->dev, port->orig.dev_addr);
61 }
62
63 static int team_port_set_team_dev_addr(struct team *team,
64 struct team_port *port)
65 {
66 return __set_port_dev_addr(port->dev, team->dev->dev_addr);
67 }
68
69 int team_modeop_port_enter(struct team *team, struct team_port *port)
70 {
71 return team_port_set_team_dev_addr(team, port);
72 }
73 EXPORT_SYMBOL(team_modeop_port_enter);
74
75 void team_modeop_port_change_dev_addr(struct team *team,
76 struct team_port *port)
77 {
78 team_port_set_team_dev_addr(team, port);
79 }
80 EXPORT_SYMBOL(team_modeop_port_change_dev_addr);
81
82 static void team_lower_state_changed(struct team_port *port)
83 {
84 struct netdev_lag_lower_state_info info;
85
86 info.link_up = port->linkup;
87 info.tx_enabled = team_port_enabled(port);
88 netdev_lower_state_changed(port->dev, &info);
89 }
90
91 static void team_refresh_port_linkup(struct team_port *port)
92 {
93 bool new_linkup = port->user.linkup_enabled ? port->user.linkup :
94 port->state.linkup;
95
96 if (port->linkup != new_linkup) {
97 port->linkup = new_linkup;
98 team_lower_state_changed(port);
99 }
100 }
101
102
103 /*******************
104 * Options handling
105 *******************/
106
107 struct team_option_inst { /* One for each option instance */
108 struct list_head list;
109 struct list_head tmp_list;
110 struct team_option *option;
111 struct team_option_inst_info info;
112 bool changed;
113 bool removed;
114 };
115
116 static struct team_option *__team_find_option(struct team *team,
117 const char *opt_name)
118 {
119 struct team_option *option;
120
121 list_for_each_entry(option, &team->option_list, list) {
122 if (strcmp(option->name, opt_name) == 0)
123 return option;
124 }
125 return NULL;
126 }
127
128 static void __team_option_inst_del(struct team_option_inst *opt_inst)
129 {
130 list_del(&opt_inst->list);
131 kfree(opt_inst);
132 }
133
134 static void __team_option_inst_del_option(struct team *team,
135 struct team_option *option)
136 {
137 struct team_option_inst *opt_inst, *tmp;
138
139 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
140 if (opt_inst->option == option)
141 __team_option_inst_del(opt_inst);
142 }
143 }
144
145 static int __team_option_inst_add(struct team *team, struct team_option *option,
146 struct team_port *port)
147 {
148 struct team_option_inst *opt_inst;
149 unsigned int array_size;
150 unsigned int i;
151 int err;
152
153 array_size = option->array_size;
154 if (!array_size)
155 array_size = 1; /* No array but still need one instance */
156
157 for (i = 0; i < array_size; i++) {
158 opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL);
159 if (!opt_inst)
160 return -ENOMEM;
161 opt_inst->option = option;
162 opt_inst->info.port = port;
163 opt_inst->info.array_index = i;
164 opt_inst->changed = true;
165 opt_inst->removed = false;
166 list_add_tail(&opt_inst->list, &team->option_inst_list);
167 if (option->init) {
168 err = option->init(team, &opt_inst->info);
169 if (err)
170 return err;
171 }
172
173 }
174 return 0;
175 }
176
177 static int __team_option_inst_add_option(struct team *team,
178 struct team_option *option)
179 {
180 int err;
181
182 if (!option->per_port) {
183 err = __team_option_inst_add(team, option, NULL);
184 if (err)
185 goto inst_del_option;
186 }
187 return 0;
188
189 inst_del_option:
190 __team_option_inst_del_option(team, option);
191 return err;
192 }
193
194 static void __team_option_inst_mark_removed_option(struct team *team,
195 struct team_option *option)
196 {
197 struct team_option_inst *opt_inst;
198
199 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
200 if (opt_inst->option == option) {
201 opt_inst->changed = true;
202 opt_inst->removed = true;
203 }
204 }
205 }
206
207 static void __team_option_inst_del_port(struct team *team,
208 struct team_port *port)
209 {
210 struct team_option_inst *opt_inst, *tmp;
211
212 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
213 if (opt_inst->option->per_port &&
214 opt_inst->info.port == port)
215 __team_option_inst_del(opt_inst);
216 }
217 }
218
219 static int __team_option_inst_add_port(struct team *team,
220 struct team_port *port)
221 {
222 struct team_option *option;
223 int err;
224
225 list_for_each_entry(option, &team->option_list, list) {
226 if (!option->per_port)
227 continue;
228 err = __team_option_inst_add(team, option, port);
229 if (err)
230 goto inst_del_port;
231 }
232 return 0;
233
234 inst_del_port:
235 __team_option_inst_del_port(team, port);
236 return err;
237 }
238
239 static void __team_option_inst_mark_removed_port(struct team *team,
240 struct team_port *port)
241 {
242 struct team_option_inst *opt_inst;
243
244 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
245 if (opt_inst->info.port == port) {
246 opt_inst->changed = true;
247 opt_inst->removed = true;
248 }
249 }
250 }
251
252 static int __team_options_register(struct team *team,
253 const struct team_option *option,
254 size_t option_count)
255 {
256 int i;
257 struct team_option **dst_opts;
258 int err;
259
260 dst_opts = kcalloc(option_count, sizeof(struct team_option *),
261 GFP_KERNEL);
262 if (!dst_opts)
263 return -ENOMEM;
264 for (i = 0; i < option_count; i++, option++) {
265 if (__team_find_option(team, option->name)) {
266 err = -EEXIST;
267 goto alloc_rollback;
268 }
269 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL);
270 if (!dst_opts[i]) {
271 err = -ENOMEM;
272 goto alloc_rollback;
273 }
274 }
275
276 for (i = 0; i < option_count; i++) {
277 err = __team_option_inst_add_option(team, dst_opts[i]);
278 if (err)
279 goto inst_rollback;
280 list_add_tail(&dst_opts[i]->list, &team->option_list);
281 }
282
283 kfree(dst_opts);
284 return 0;
285
286 inst_rollback:
287 for (i--; i >= 0; i--)
288 __team_option_inst_del_option(team, dst_opts[i]);
289
290 i = option_count - 1;
291 alloc_rollback:
292 for (i--; i >= 0; i--)
293 kfree(dst_opts[i]);
294
295 kfree(dst_opts);
296 return err;
297 }
298
299 static void __team_options_mark_removed(struct team *team,
300 const struct team_option *option,
301 size_t option_count)
302 {
303 int i;
304
305 for (i = 0; i < option_count; i++, option++) {
306 struct team_option *del_opt;
307
308 del_opt = __team_find_option(team, option->name);
309 if (del_opt)
310 __team_option_inst_mark_removed_option(team, del_opt);
311 }
312 }
313
314 static void __team_options_unregister(struct team *team,
315 const struct team_option *option,
316 size_t option_count)
317 {
318 int i;
319
320 for (i = 0; i < option_count; i++, option++) {
321 struct team_option *del_opt;
322
323 del_opt = __team_find_option(team, option->name);
324 if (del_opt) {
325 __team_option_inst_del_option(team, del_opt);
326 list_del(&del_opt->list);
327 kfree(del_opt);
328 }
329 }
330 }
331
332 static void __team_options_change_check(struct team *team);
333
334 int team_options_register(struct team *team,
335 const struct team_option *option,
336 size_t option_count)
337 {
338 int err;
339
340 err = __team_options_register(team, option, option_count);
341 if (err)
342 return err;
343 __team_options_change_check(team);
344 return 0;
345 }
346 EXPORT_SYMBOL(team_options_register);
347
348 void team_options_unregister(struct team *team,
349 const struct team_option *option,
350 size_t option_count)
351 {
352 __team_options_mark_removed(team, option, option_count);
353 __team_options_change_check(team);
354 __team_options_unregister(team, option, option_count);
355 }
356 EXPORT_SYMBOL(team_options_unregister);
357
358 static int team_option_get(struct team *team,
359 struct team_option_inst *opt_inst,
360 struct team_gsetter_ctx *ctx)
361 {
362 if (!opt_inst->option->getter)
363 return -EOPNOTSUPP;
364 return opt_inst->option->getter(team, ctx);
365 }
366
367 static int team_option_set(struct team *team,
368 struct team_option_inst *opt_inst,
369 struct team_gsetter_ctx *ctx)
370 {
371 if (!opt_inst->option->setter)
372 return -EOPNOTSUPP;
373 return opt_inst->option->setter(team, ctx);
374 }
375
376 void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info)
377 {
378 struct team_option_inst *opt_inst;
379
380 opt_inst = container_of(opt_inst_info, struct team_option_inst, info);
381 opt_inst->changed = true;
382 }
383 EXPORT_SYMBOL(team_option_inst_set_change);
384
385 void team_options_change_check(struct team *team)
386 {
387 __team_options_change_check(team);
388 }
389 EXPORT_SYMBOL(team_options_change_check);
390
391
392 /****************
393 * Mode handling
394 ****************/
395
396 static LIST_HEAD(mode_list);
397 static DEFINE_SPINLOCK(mode_list_lock);
398
399 struct team_mode_item {
400 struct list_head list;
401 const struct team_mode *mode;
402 };
403
404 static struct team_mode_item *__find_mode(const char *kind)
405 {
406 struct team_mode_item *mitem;
407
408 list_for_each_entry(mitem, &mode_list, list) {
409 if (strcmp(mitem->mode->kind, kind) == 0)
410 return mitem;
411 }
412 return NULL;
413 }
414
415 static bool is_good_mode_name(const char *name)
416 {
417 while (*name != '\0') {
418 if (!isalpha(*name) && !isdigit(*name) && *name != '_')
419 return false;
420 name++;
421 }
422 return true;
423 }
424
425 int team_mode_register(const struct team_mode *mode)
426 {
427 int err = 0;
428 struct team_mode_item *mitem;
429
430 if (!is_good_mode_name(mode->kind) ||
431 mode->priv_size > TEAM_MODE_PRIV_SIZE)
432 return -EINVAL;
433
434 mitem = kmalloc(sizeof(*mitem), GFP_KERNEL);
435 if (!mitem)
436 return -ENOMEM;
437
438 spin_lock(&mode_list_lock);
439 if (__find_mode(mode->kind)) {
440 err = -EEXIST;
441 kfree(mitem);
442 goto unlock;
443 }
444 mitem->mode = mode;
445 list_add_tail(&mitem->list, &mode_list);
446 unlock:
447 spin_unlock(&mode_list_lock);
448 return err;
449 }
450 EXPORT_SYMBOL(team_mode_register);
451
452 void team_mode_unregister(const struct team_mode *mode)
453 {
454 struct team_mode_item *mitem;
455
456 spin_lock(&mode_list_lock);
457 mitem = __find_mode(mode->kind);
458 if (mitem) {
459 list_del_init(&mitem->list);
460 kfree(mitem);
461 }
462 spin_unlock(&mode_list_lock);
463 }
464 EXPORT_SYMBOL(team_mode_unregister);
465
466 static const struct team_mode *team_mode_get(const char *kind)
467 {
468 struct team_mode_item *mitem;
469 const struct team_mode *mode = NULL;
470
471 if (!try_module_get(THIS_MODULE))
472 return NULL;
473
474 spin_lock(&mode_list_lock);
475 mitem = __find_mode(kind);
476 if (!mitem) {
477 spin_unlock(&mode_list_lock);
478 request_module("team-mode-%s", kind);
479 spin_lock(&mode_list_lock);
480 mitem = __find_mode(kind);
481 }
482 if (mitem) {
483 mode = mitem->mode;
484 if (!try_module_get(mode->owner))
485 mode = NULL;
486 }
487
488 spin_unlock(&mode_list_lock);
489 module_put(THIS_MODULE);
490 return mode;
491 }
492
493 static void team_mode_put(const struct team_mode *mode)
494 {
495 module_put(mode->owner);
496 }
497
498 static bool team_dummy_transmit(struct team *team, struct sk_buff *skb)
499 {
500 dev_kfree_skb_any(skb);
501 return false;
502 }
503
504 static rx_handler_result_t team_dummy_receive(struct team *team,
505 struct team_port *port,
506 struct sk_buff *skb)
507 {
508 return RX_HANDLER_ANOTHER;
509 }
510
511 static const struct team_mode __team_no_mode = {
512 .kind = "*NOMODE*",
513 };
514
515 static bool team_is_mode_set(struct team *team)
516 {
517 return team->mode != &__team_no_mode;
518 }
519
520 static void team_set_no_mode(struct team *team)
521 {
522 team->user_carrier_enabled = false;
523 team->mode = &__team_no_mode;
524 }
525
526 static void team_adjust_ops(struct team *team)
527 {
528 /*
529 * To avoid checks in rx/tx skb paths, ensure here that non-null and
530 * correct ops are always set.
531 */
532
533 if (!team->en_port_count || !team_is_mode_set(team) ||
534 !team->mode->ops->transmit)
535 team->ops.transmit = team_dummy_transmit;
536 else
537 team->ops.transmit = team->mode->ops->transmit;
538
539 if (!team->en_port_count || !team_is_mode_set(team) ||
540 !team->mode->ops->receive)
541 team->ops.receive = team_dummy_receive;
542 else
543 team->ops.receive = team->mode->ops->receive;
544 }
545
546 /*
547 * We can benefit from the fact that it's ensured no port is present
548 * at the time of mode change. Therefore no packets are in fly so there's no
549 * need to set mode operations in any special way.
550 */
551 static int __team_change_mode(struct team *team,
552 const struct team_mode *new_mode)
553 {
554 /* Check if mode was previously set and do cleanup if so */
555 if (team_is_mode_set(team)) {
556 void (*exit_op)(struct team *team) = team->ops.exit;
557
558 /* Clear ops area so no callback is called any longer */
559 memset(&team->ops, 0, sizeof(struct team_mode_ops));
560 team_adjust_ops(team);
561
562 if (exit_op)
563 exit_op(team);
564 team_mode_put(team->mode);
565 team_set_no_mode(team);
566 /* zero private data area */
567 memset(&team->mode_priv, 0,
568 sizeof(struct team) - offsetof(struct team, mode_priv));
569 }
570
571 if (!new_mode)
572 return 0;
573
574 if (new_mode->ops->init) {
575 int err;
576
577 err = new_mode->ops->init(team);
578 if (err)
579 return err;
580 }
581
582 team->mode = new_mode;
583 memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops));
584 team_adjust_ops(team);
585
586 return 0;
587 }
588
589 static int team_change_mode(struct team *team, const char *kind)
590 {
591 const struct team_mode *new_mode;
592 struct net_device *dev = team->dev;
593 int err;
594
595 if (!list_empty(&team->port_list)) {
596 netdev_err(dev, "No ports can be present during mode change\n");
597 return -EBUSY;
598 }
599
600 if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) {
601 netdev_err(dev, "Unable to change to the same mode the team is in\n");
602 return -EINVAL;
603 }
604
605 new_mode = team_mode_get(kind);
606 if (!new_mode) {
607 netdev_err(dev, "Mode \"%s\" not found\n", kind);
608 return -EINVAL;
609 }
610
611 err = __team_change_mode(team, new_mode);
612 if (err) {
613 netdev_err(dev, "Failed to change to mode \"%s\"\n", kind);
614 team_mode_put(new_mode);
615 return err;
616 }
617
618 netdev_info(dev, "Mode changed to \"%s\"\n", kind);
619 return 0;
620 }
621
622
623 /*********************
624 * Peers notification
625 *********************/
626
627 static void team_notify_peers_work(struct work_struct *work)
628 {
629 struct team *team;
630 int val;
631
632 team = container_of(work, struct team, notify_peers.dw.work);
633
634 if (!rtnl_trylock()) {
635 schedule_delayed_work(&team->notify_peers.dw, 0);
636 return;
637 }
638 val = atomic_dec_if_positive(&team->notify_peers.count_pending);
639 if (val < 0) {
640 rtnl_unlock();
641 return;
642 }
643 call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, team->dev);
644 rtnl_unlock();
645 if (val)
646 schedule_delayed_work(&team->notify_peers.dw,
647 msecs_to_jiffies(team->notify_peers.interval));
648 }
649
650 static void team_notify_peers(struct team *team)
651 {
652 if (!team->notify_peers.count || !netif_running(team->dev))
653 return;
654 atomic_add(team->notify_peers.count, &team->notify_peers.count_pending);
655 schedule_delayed_work(&team->notify_peers.dw, 0);
656 }
657
658 static void team_notify_peers_init(struct team *team)
659 {
660 INIT_DELAYED_WORK(&team->notify_peers.dw, team_notify_peers_work);
661 }
662
663 static void team_notify_peers_fini(struct team *team)
664 {
665 cancel_delayed_work_sync(&team->notify_peers.dw);
666 }
667
668
669 /*******************************
670 * Send multicast group rejoins
671 *******************************/
672
673 static void team_mcast_rejoin_work(struct work_struct *work)
674 {
675 struct team *team;
676 int val;
677
678 team = container_of(work, struct team, mcast_rejoin.dw.work);
679
680 if (!rtnl_trylock()) {
681 schedule_delayed_work(&team->mcast_rejoin.dw, 0);
682 return;
683 }
684 val = atomic_dec_if_positive(&team->mcast_rejoin.count_pending);
685 if (val < 0) {
686 rtnl_unlock();
687 return;
688 }
689 call_netdevice_notifiers(NETDEV_RESEND_IGMP, team->dev);
690 rtnl_unlock();
691 if (val)
692 schedule_delayed_work(&team->mcast_rejoin.dw,
693 msecs_to_jiffies(team->mcast_rejoin.interval));
694 }
695
696 static void team_mcast_rejoin(struct team *team)
697 {
698 if (!team->mcast_rejoin.count || !netif_running(team->dev))
699 return;
700 atomic_add(team->mcast_rejoin.count, &team->mcast_rejoin.count_pending);
701 schedule_delayed_work(&team->mcast_rejoin.dw, 0);
702 }
703
704 static void team_mcast_rejoin_init(struct team *team)
705 {
706 INIT_DELAYED_WORK(&team->mcast_rejoin.dw, team_mcast_rejoin_work);
707 }
708
709 static void team_mcast_rejoin_fini(struct team *team)
710 {
711 cancel_delayed_work_sync(&team->mcast_rejoin.dw);
712 }
713
714
715 /************************
716 * Rx path frame handler
717 ************************/
718
719 /* note: already called with rcu_read_lock */
720 static rx_handler_result_t team_handle_frame(struct sk_buff **pskb)
721 {
722 struct sk_buff *skb = *pskb;
723 struct team_port *port;
724 struct team *team;
725 rx_handler_result_t res;
726
727 skb = skb_share_check(skb, GFP_ATOMIC);
728 if (!skb)
729 return RX_HANDLER_CONSUMED;
730
731 *pskb = skb;
732
733 port = team_port_get_rcu(skb->dev);
734 team = port->team;
735 if (!team_port_enabled(port)) {
736 /* allow exact match delivery for disabled ports */
737 res = RX_HANDLER_EXACT;
738 } else {
739 res = team->ops.receive(team, port, skb);
740 }
741 if (res == RX_HANDLER_ANOTHER) {
742 struct team_pcpu_stats *pcpu_stats;
743
744 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
745 u64_stats_update_begin(&pcpu_stats->syncp);
746 pcpu_stats->rx_packets++;
747 pcpu_stats->rx_bytes += skb->len;
748 if (skb->pkt_type == PACKET_MULTICAST)
749 pcpu_stats->rx_multicast++;
750 u64_stats_update_end(&pcpu_stats->syncp);
751
752 skb->dev = team->dev;
753 } else if (res == RX_HANDLER_EXACT) {
754 this_cpu_inc(team->pcpu_stats->rx_nohandler);
755 } else {
756 this_cpu_inc(team->pcpu_stats->rx_dropped);
757 }
758
759 return res;
760 }
761
762
763 /*************************************
764 * Multiqueue Tx port select override
765 *************************************/
766
767 static int team_queue_override_init(struct team *team)
768 {
769 struct list_head *listarr;
770 unsigned int queue_cnt = team->dev->num_tx_queues - 1;
771 unsigned int i;
772
773 if (!queue_cnt)
774 return 0;
775 listarr = kmalloc_array(queue_cnt, sizeof(struct list_head),
776 GFP_KERNEL);
777 if (!listarr)
778 return -ENOMEM;
779 team->qom_lists = listarr;
780 for (i = 0; i < queue_cnt; i++)
781 INIT_LIST_HEAD(listarr++);
782 return 0;
783 }
784
785 static void team_queue_override_fini(struct team *team)
786 {
787 kfree(team->qom_lists);
788 }
789
790 static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id)
791 {
792 return &team->qom_lists[queue_id - 1];
793 }
794
795 /*
796 * note: already called with rcu_read_lock
797 */
798 static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb)
799 {
800 struct list_head *qom_list;
801 struct team_port *port;
802
803 if (!team->queue_override_enabled || !skb->queue_mapping)
804 return false;
805 qom_list = __team_get_qom_list(team, skb->queue_mapping);
806 list_for_each_entry_rcu(port, qom_list, qom_list) {
807 if (!team_dev_queue_xmit(team, port, skb))
808 return true;
809 }
810 return false;
811 }
812
813 static void __team_queue_override_port_del(struct team *team,
814 struct team_port *port)
815 {
816 if (!port->queue_id)
817 return;
818 list_del_rcu(&port->qom_list);
819 }
820
821 static bool team_queue_override_port_has_gt_prio_than(struct team_port *port,
822 struct team_port *cur)
823 {
824 if (port->priority < cur->priority)
825 return true;
826 if (port->priority > cur->priority)
827 return false;
828 if (port->index < cur->index)
829 return true;
830 return false;
831 }
832
833 static void __team_queue_override_port_add(struct team *team,
834 struct team_port *port)
835 {
836 struct team_port *cur;
837 struct list_head *qom_list;
838 struct list_head *node;
839
840 if (!port->queue_id)
841 return;
842 qom_list = __team_get_qom_list(team, port->queue_id);
843 node = qom_list;
844 list_for_each_entry(cur, qom_list, qom_list) {
845 if (team_queue_override_port_has_gt_prio_than(port, cur))
846 break;
847 node = &cur->qom_list;
848 }
849 list_add_tail_rcu(&port->qom_list, node);
850 }
851
852 static void __team_queue_override_enabled_check(struct team *team)
853 {
854 struct team_port *port;
855 bool enabled = false;
856
857 list_for_each_entry(port, &team->port_list, list) {
858 if (port->queue_id) {
859 enabled = true;
860 break;
861 }
862 }
863 if (enabled == team->queue_override_enabled)
864 return;
865 netdev_dbg(team->dev, "%s queue override\n",
866 enabled ? "Enabling" : "Disabling");
867 team->queue_override_enabled = enabled;
868 }
869
870 static void team_queue_override_port_prio_changed(struct team *team,
871 struct team_port *port)
872 {
873 if (!port->queue_id || team_port_enabled(port))
874 return;
875 __team_queue_override_port_del(team, port);
876 __team_queue_override_port_add(team, port);
877 __team_queue_override_enabled_check(team);
878 }
879
880 static void team_queue_override_port_change_queue_id(struct team *team,
881 struct team_port *port,
882 u16 new_queue_id)
883 {
884 if (team_port_enabled(port)) {
885 __team_queue_override_port_del(team, port);
886 port->queue_id = new_queue_id;
887 __team_queue_override_port_add(team, port);
888 __team_queue_override_enabled_check(team);
889 } else {
890 port->queue_id = new_queue_id;
891 }
892 }
893
894 static void team_queue_override_port_add(struct team *team,
895 struct team_port *port)
896 {
897 __team_queue_override_port_add(team, port);
898 __team_queue_override_enabled_check(team);
899 }
900
901 static void team_queue_override_port_del(struct team *team,
902 struct team_port *port)
903 {
904 __team_queue_override_port_del(team, port);
905 __team_queue_override_enabled_check(team);
906 }
907
908
909 /****************
910 * Port handling
911 ****************/
912
913 static bool team_port_find(const struct team *team,
914 const struct team_port *port)
915 {
916 struct team_port *cur;
917
918 list_for_each_entry(cur, &team->port_list, list)
919 if (cur == port)
920 return true;
921 return false;
922 }
923
924 /*
925 * Enable/disable port by adding to enabled port hashlist and setting
926 * port->index (Might be racy so reader could see incorrect ifindex when
927 * processing a flying packet, but that is not a problem). Write guarded
928 * by team->lock.
929 */
930 static void team_port_enable(struct team *team,
931 struct team_port *port)
932 {
933 if (team_port_enabled(port))
934 return;
935 port->index = team->en_port_count++;
936 hlist_add_head_rcu(&port->hlist,
937 team_port_index_hash(team, port->index));
938 team_adjust_ops(team);
939 team_queue_override_port_add(team, port);
940 if (team->ops.port_enabled)
941 team->ops.port_enabled(team, port);
942 team_notify_peers(team);
943 team_mcast_rejoin(team);
944 team_lower_state_changed(port);
945 }
946
947 static void __reconstruct_port_hlist(struct team *team, int rm_index)
948 {
949 int i;
950 struct team_port *port;
951
952 for (i = rm_index + 1; i < team->en_port_count; i++) {
953 port = team_get_port_by_index(team, i);
954 hlist_del_rcu(&port->hlist);
955 port->index--;
956 hlist_add_head_rcu(&port->hlist,
957 team_port_index_hash(team, port->index));
958 }
959 }
960
961 static void team_port_disable(struct team *team,
962 struct team_port *port)
963 {
964 if (!team_port_enabled(port))
965 return;
966 if (team->ops.port_disabled)
967 team->ops.port_disabled(team, port);
968 hlist_del_rcu(&port->hlist);
969 __reconstruct_port_hlist(team, port->index);
970 port->index = -1;
971 team->en_port_count--;
972 team_queue_override_port_del(team, port);
973 team_adjust_ops(team);
974 team_lower_state_changed(port);
975 }
976
977 #define TEAM_VLAN_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \
978 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
979 NETIF_F_HIGHDMA | NETIF_F_LRO)
980
981 #define TEAM_ENC_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \
982 NETIF_F_RXCSUM | NETIF_F_ALL_TSO)
983
984 static void __team_compute_features(struct team *team)
985 {
986 struct team_port *port;
987 netdev_features_t vlan_features = TEAM_VLAN_FEATURES &
988 NETIF_F_ALL_FOR_ALL;
989 netdev_features_t enc_features = TEAM_ENC_FEATURES;
990 unsigned short max_hard_header_len = ETH_HLEN;
991 unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE |
992 IFF_XMIT_DST_RELEASE_PERM;
993
994 list_for_each_entry(port, &team->port_list, list) {
995 vlan_features = netdev_increment_features(vlan_features,
996 port->dev->vlan_features,
997 TEAM_VLAN_FEATURES);
998 enc_features =
999 netdev_increment_features(enc_features,
1000 port->dev->hw_enc_features,
1001 TEAM_ENC_FEATURES);
1002
1003
1004 dst_release_flag &= port->dev->priv_flags;
1005 if (port->dev->hard_header_len > max_hard_header_len)
1006 max_hard_header_len = port->dev->hard_header_len;
1007 }
1008
1009 team->dev->vlan_features = vlan_features;
1010 team->dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL |
1011 NETIF_F_HW_VLAN_CTAG_TX |
1012 NETIF_F_HW_VLAN_STAG_TX |
1013 NETIF_F_GSO_UDP_L4;
1014 team->dev->hard_header_len = max_hard_header_len;
1015
1016 team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
1017 if (dst_release_flag == (IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM))
1018 team->dev->priv_flags |= IFF_XMIT_DST_RELEASE;
1019 }
1020
1021 static void team_compute_features(struct team *team)
1022 {
1023 mutex_lock(&team->lock);
1024 __team_compute_features(team);
1025 mutex_unlock(&team->lock);
1026 netdev_change_features(team->dev);
1027 }
1028
1029 static int team_port_enter(struct team *team, struct team_port *port)
1030 {
1031 int err = 0;
1032
1033 dev_hold(team->dev);
1034 if (team->ops.port_enter) {
1035 err = team->ops.port_enter(team, port);
1036 if (err) {
1037 netdev_err(team->dev, "Device %s failed to enter team mode\n",
1038 port->dev->name);
1039 goto err_port_enter;
1040 }
1041 }
1042
1043 return 0;
1044
1045 err_port_enter:
1046 dev_put(team->dev);
1047
1048 return err;
1049 }
1050
1051 static void team_port_leave(struct team *team, struct team_port *port)
1052 {
1053 if (team->ops.port_leave)
1054 team->ops.port_leave(team, port);
1055 dev_put(team->dev);
1056 }
1057
1058 #ifdef CONFIG_NET_POLL_CONTROLLER
1059 static int __team_port_enable_netpoll(struct team_port *port)
1060 {
1061 struct netpoll *np;
1062 int err;
1063
1064 np = kzalloc(sizeof(*np), GFP_KERNEL);
1065 if (!np)
1066 return -ENOMEM;
1067
1068 err = __netpoll_setup(np, port->dev);
1069 if (err) {
1070 kfree(np);
1071 return err;
1072 }
1073 port->np = np;
1074 return err;
1075 }
1076
1077 static int team_port_enable_netpoll(struct team_port *port)
1078 {
1079 if (!port->team->dev->npinfo)
1080 return 0;
1081
1082 return __team_port_enable_netpoll(port);
1083 }
1084
1085 static void team_port_disable_netpoll(struct team_port *port)
1086 {
1087 struct netpoll *np = port->np;
1088
1089 if (!np)
1090 return;
1091 port->np = NULL;
1092
1093 __netpoll_free(np);
1094 }
1095 #else
1096 static int team_port_enable_netpoll(struct team_port *port)
1097 {
1098 return 0;
1099 }
1100 static void team_port_disable_netpoll(struct team_port *port)
1101 {
1102 }
1103 #endif
1104
1105 static int team_upper_dev_link(struct team *team, struct team_port *port,
1106 struct netlink_ext_ack *extack)
1107 {
1108 struct netdev_lag_upper_info lag_upper_info;
1109 int err;
1110
1111 lag_upper_info.tx_type = team->mode->lag_tx_type;
1112 lag_upper_info.hash_type = NETDEV_LAG_HASH_UNKNOWN;
1113 err = netdev_master_upper_dev_link(port->dev, team->dev, NULL,
1114 &lag_upper_info, extack);
1115 if (err)
1116 return err;
1117 port->dev->priv_flags |= IFF_TEAM_PORT;
1118 return 0;
1119 }
1120
1121 static void team_upper_dev_unlink(struct team *team, struct team_port *port)
1122 {
1123 netdev_upper_dev_unlink(port->dev, team->dev);
1124 port->dev->priv_flags &= ~IFF_TEAM_PORT;
1125 }
1126
1127 static void __team_port_change_port_added(struct team_port *port, bool linkup);
1128 static int team_dev_type_check_change(struct net_device *dev,
1129 struct net_device *port_dev);
1130
1131 static int team_port_add(struct team *team, struct net_device *port_dev,
1132 struct netlink_ext_ack *extack)
1133 {
1134 struct net_device *dev = team->dev;
1135 struct team_port *port;
1136 char *portname = port_dev->name;
1137 int err;
1138
1139 if (port_dev->flags & IFF_LOOPBACK) {
1140 NL_SET_ERR_MSG(extack, "Loopback device can't be added as a team port");
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 (netif_is_team_port(port_dev)) {
1147 NL_SET_ERR_MSG(extack, "Device is already a port of a team device");
1148 netdev_err(dev, "Device %s is already a port "
1149 "of a team device\n", portname);
1150 return -EBUSY;
1151 }
1152
1153 if (dev == port_dev) {
1154 NL_SET_ERR_MSG(extack, "Cannot enslave team device to itself");
1155 netdev_err(dev, "Cannot enslave team device to itself\n");
1156 return -EINVAL;
1157 }
1158
1159 if (netdev_has_upper_dev(dev, port_dev)) {
1160 NL_SET_ERR_MSG(extack, "Device is already an upper device of the team interface");
1161 netdev_err(dev, "Device %s is already an upper device of the team interface\n",
1162 portname);
1163 return -EBUSY;
1164 }
1165
1166 if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
1167 vlan_uses_dev(dev)) {
1168 NL_SET_ERR_MSG(extack, "Device is VLAN challenged and team device has VLAN set up");
1169 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
1170 portname);
1171 return -EPERM;
1172 }
1173
1174 err = team_dev_type_check_change(dev, port_dev);
1175 if (err)
1176 return err;
1177
1178 if (port_dev->flags & IFF_UP) {
1179 NL_SET_ERR_MSG(extack, "Device is up. Set it down before adding it as a team port");
1180 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
1181 portname);
1182 return -EBUSY;
1183 }
1184
1185 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size,
1186 GFP_KERNEL);
1187 if (!port)
1188 return -ENOMEM;
1189
1190 port->dev = port_dev;
1191 port->team = team;
1192 INIT_LIST_HEAD(&port->qom_list);
1193
1194 port->orig.mtu = port_dev->mtu;
1195 err = dev_set_mtu(port_dev, dev->mtu);
1196 if (err) {
1197 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
1198 goto err_set_mtu;
1199 }
1200
1201 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len);
1202
1203 err = team_port_enter(team, port);
1204 if (err) {
1205 netdev_err(dev, "Device %s failed to enter team mode\n",
1206 portname);
1207 goto err_port_enter;
1208 }
1209
1210 err = dev_open(port_dev, extack);
1211 if (err) {
1212 netdev_dbg(dev, "Device %s opening failed\n",
1213 portname);
1214 goto err_dev_open;
1215 }
1216
1217 err = vlan_vids_add_by_dev(port_dev, dev);
1218 if (err) {
1219 netdev_err(dev, "Failed to add vlan ids to device %s\n",
1220 portname);
1221 goto err_vids_add;
1222 }
1223
1224 err = team_port_enable_netpoll(port);
1225 if (err) {
1226 netdev_err(dev, "Failed to enable netpoll on device %s\n",
1227 portname);
1228 goto err_enable_netpoll;
1229 }
1230
1231 if (!(dev->features & NETIF_F_LRO))
1232 dev_disable_lro(port_dev);
1233
1234 err = netdev_rx_handler_register(port_dev, team_handle_frame,
1235 port);
1236 if (err) {
1237 netdev_err(dev, "Device %s failed to register rx_handler\n",
1238 portname);
1239 goto err_handler_register;
1240 }
1241
1242 err = team_upper_dev_link(team, port, extack);
1243 if (err) {
1244 netdev_err(dev, "Device %s failed to set upper link\n",
1245 portname);
1246 goto err_set_upper_link;
1247 }
1248
1249 err = __team_option_inst_add_port(team, port);
1250 if (err) {
1251 netdev_err(dev, "Device %s failed to add per-port options\n",
1252 portname);
1253 goto err_option_port_add;
1254 }
1255
1256 /* set promiscuity level to new slave */
1257 if (dev->flags & IFF_PROMISC) {
1258 err = dev_set_promiscuity(port_dev, 1);
1259 if (err)
1260 goto err_set_slave_promisc;
1261 }
1262
1263 /* set allmulti level to new slave */
1264 if (dev->flags & IFF_ALLMULTI) {
1265 err = dev_set_allmulti(port_dev, 1);
1266 if (err) {
1267 if (dev->flags & IFF_PROMISC)
1268 dev_set_promiscuity(port_dev, -1);
1269 goto err_set_slave_promisc;
1270 }
1271 }
1272
1273 netif_addr_lock_bh(dev);
1274 dev_uc_sync_multiple(port_dev, dev);
1275 dev_mc_sync_multiple(port_dev, dev);
1276 netif_addr_unlock_bh(dev);
1277
1278 port->index = -1;
1279 list_add_tail_rcu(&port->list, &team->port_list);
1280 team_port_enable(team, port);
1281 __team_compute_features(team);
1282 __team_port_change_port_added(port, !!netif_oper_up(port_dev));
1283 __team_options_change_check(team);
1284
1285 netdev_info(dev, "Port device %s added\n", portname);
1286
1287 return 0;
1288
1289 err_set_slave_promisc:
1290 __team_option_inst_del_port(team, port);
1291
1292 err_option_port_add:
1293 team_upper_dev_unlink(team, port);
1294
1295 err_set_upper_link:
1296 netdev_rx_handler_unregister(port_dev);
1297
1298 err_handler_register:
1299 team_port_disable_netpoll(port);
1300
1301 err_enable_netpoll:
1302 vlan_vids_del_by_dev(port_dev, dev);
1303
1304 err_vids_add:
1305 dev_close(port_dev);
1306
1307 err_dev_open:
1308 team_port_leave(team, port);
1309 team_port_set_orig_dev_addr(port);
1310
1311 err_port_enter:
1312 dev_set_mtu(port_dev, port->orig.mtu);
1313
1314 err_set_mtu:
1315 kfree(port);
1316
1317 return err;
1318 }
1319
1320 static void __team_port_change_port_removed(struct team_port *port);
1321
1322 static int team_port_del(struct team *team, struct net_device *port_dev)
1323 {
1324 struct net_device *dev = team->dev;
1325 struct team_port *port;
1326 char *portname = port_dev->name;
1327
1328 port = team_port_get_rtnl(port_dev);
1329 if (!port || !team_port_find(team, port)) {
1330 netdev_err(dev, "Device %s does not act as a port of this team\n",
1331 portname);
1332 return -ENOENT;
1333 }
1334
1335 team_port_disable(team, port);
1336 list_del_rcu(&port->list);
1337
1338 if (dev->flags & IFF_PROMISC)
1339 dev_set_promiscuity(port_dev, -1);
1340 if (dev->flags & IFF_ALLMULTI)
1341 dev_set_allmulti(port_dev, -1);
1342
1343 team_upper_dev_unlink(team, port);
1344 netdev_rx_handler_unregister(port_dev);
1345 team_port_disable_netpoll(port);
1346 vlan_vids_del_by_dev(port_dev, dev);
1347 dev_uc_unsync(port_dev, dev);
1348 dev_mc_unsync(port_dev, dev);
1349 dev_close(port_dev);
1350 team_port_leave(team, port);
1351
1352 __team_option_inst_mark_removed_port(team, port);
1353 __team_options_change_check(team);
1354 __team_option_inst_del_port(team, port);
1355 __team_port_change_port_removed(port);
1356
1357 team_port_set_orig_dev_addr(port);
1358 dev_set_mtu(port_dev, port->orig.mtu);
1359 kfree_rcu(port, rcu);
1360 netdev_info(dev, "Port device %s removed\n", portname);
1361 __team_compute_features(team);
1362
1363 return 0;
1364 }
1365
1366
1367 /*****************
1368 * Net device ops
1369 *****************/
1370
1371 static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
1372 {
1373 ctx->data.str_val = team->mode->kind;
1374 return 0;
1375 }
1376
1377 static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
1378 {
1379 return team_change_mode(team, ctx->data.str_val);
1380 }
1381
1382 static int team_notify_peers_count_get(struct team *team,
1383 struct team_gsetter_ctx *ctx)
1384 {
1385 ctx->data.u32_val = team->notify_peers.count;
1386 return 0;
1387 }
1388
1389 static int team_notify_peers_count_set(struct team *team,
1390 struct team_gsetter_ctx *ctx)
1391 {
1392 team->notify_peers.count = ctx->data.u32_val;
1393 return 0;
1394 }
1395
1396 static int team_notify_peers_interval_get(struct team *team,
1397 struct team_gsetter_ctx *ctx)
1398 {
1399 ctx->data.u32_val = team->notify_peers.interval;
1400 return 0;
1401 }
1402
1403 static int team_notify_peers_interval_set(struct team *team,
1404 struct team_gsetter_ctx *ctx)
1405 {
1406 team->notify_peers.interval = ctx->data.u32_val;
1407 return 0;
1408 }
1409
1410 static int team_mcast_rejoin_count_get(struct team *team,
1411 struct team_gsetter_ctx *ctx)
1412 {
1413 ctx->data.u32_val = team->mcast_rejoin.count;
1414 return 0;
1415 }
1416
1417 static int team_mcast_rejoin_count_set(struct team *team,
1418 struct team_gsetter_ctx *ctx)
1419 {
1420 team->mcast_rejoin.count = ctx->data.u32_val;
1421 return 0;
1422 }
1423
1424 static int team_mcast_rejoin_interval_get(struct team *team,
1425 struct team_gsetter_ctx *ctx)
1426 {
1427 ctx->data.u32_val = team->mcast_rejoin.interval;
1428 return 0;
1429 }
1430
1431 static int team_mcast_rejoin_interval_set(struct team *team,
1432 struct team_gsetter_ctx *ctx)
1433 {
1434 team->mcast_rejoin.interval = ctx->data.u32_val;
1435 return 0;
1436 }
1437
1438 static int team_port_en_option_get(struct team *team,
1439 struct team_gsetter_ctx *ctx)
1440 {
1441 struct team_port *port = ctx->info->port;
1442
1443 ctx->data.bool_val = team_port_enabled(port);
1444 return 0;
1445 }
1446
1447 static int team_port_en_option_set(struct team *team,
1448 struct team_gsetter_ctx *ctx)
1449 {
1450 struct team_port *port = ctx->info->port;
1451
1452 if (ctx->data.bool_val)
1453 team_port_enable(team, port);
1454 else
1455 team_port_disable(team, port);
1456 return 0;
1457 }
1458
1459 static int team_user_linkup_option_get(struct team *team,
1460 struct team_gsetter_ctx *ctx)
1461 {
1462 struct team_port *port = ctx->info->port;
1463
1464 ctx->data.bool_val = port->user.linkup;
1465 return 0;
1466 }
1467
1468 static void __team_carrier_check(struct team *team);
1469
1470 static int team_user_linkup_option_set(struct team *team,
1471 struct team_gsetter_ctx *ctx)
1472 {
1473 struct team_port *port = ctx->info->port;
1474
1475 port->user.linkup = ctx->data.bool_val;
1476 team_refresh_port_linkup(port);
1477 __team_carrier_check(port->team);
1478 return 0;
1479 }
1480
1481 static int team_user_linkup_en_option_get(struct team *team,
1482 struct team_gsetter_ctx *ctx)
1483 {
1484 struct team_port *port = ctx->info->port;
1485
1486 ctx->data.bool_val = port->user.linkup_enabled;
1487 return 0;
1488 }
1489
1490 static int team_user_linkup_en_option_set(struct team *team,
1491 struct team_gsetter_ctx *ctx)
1492 {
1493 struct team_port *port = ctx->info->port;
1494
1495 port->user.linkup_enabled = ctx->data.bool_val;
1496 team_refresh_port_linkup(port);
1497 __team_carrier_check(port->team);
1498 return 0;
1499 }
1500
1501 static int team_priority_option_get(struct team *team,
1502 struct team_gsetter_ctx *ctx)
1503 {
1504 struct team_port *port = ctx->info->port;
1505
1506 ctx->data.s32_val = port->priority;
1507 return 0;
1508 }
1509
1510 static int team_priority_option_set(struct team *team,
1511 struct team_gsetter_ctx *ctx)
1512 {
1513 struct team_port *port = ctx->info->port;
1514 s32 priority = ctx->data.s32_val;
1515
1516 if (port->priority == priority)
1517 return 0;
1518 port->priority = priority;
1519 team_queue_override_port_prio_changed(team, port);
1520 return 0;
1521 }
1522
1523 static int team_queue_id_option_get(struct team *team,
1524 struct team_gsetter_ctx *ctx)
1525 {
1526 struct team_port *port = ctx->info->port;
1527
1528 ctx->data.u32_val = port->queue_id;
1529 return 0;
1530 }
1531
1532 static int team_queue_id_option_set(struct team *team,
1533 struct team_gsetter_ctx *ctx)
1534 {
1535 struct team_port *port = ctx->info->port;
1536 u16 new_queue_id = ctx->data.u32_val;
1537
1538 if (port->queue_id == new_queue_id)
1539 return 0;
1540 if (new_queue_id >= team->dev->real_num_tx_queues)
1541 return -EINVAL;
1542 team_queue_override_port_change_queue_id(team, port, new_queue_id);
1543 return 0;
1544 }
1545
1546 static const struct team_option team_options[] = {
1547 {
1548 .name = "mode",
1549 .type = TEAM_OPTION_TYPE_STRING,
1550 .getter = team_mode_option_get,
1551 .setter = team_mode_option_set,
1552 },
1553 {
1554 .name = "notify_peers_count",
1555 .type = TEAM_OPTION_TYPE_U32,
1556 .getter = team_notify_peers_count_get,
1557 .setter = team_notify_peers_count_set,
1558 },
1559 {
1560 .name = "notify_peers_interval",
1561 .type = TEAM_OPTION_TYPE_U32,
1562 .getter = team_notify_peers_interval_get,
1563 .setter = team_notify_peers_interval_set,
1564 },
1565 {
1566 .name = "mcast_rejoin_count",
1567 .type = TEAM_OPTION_TYPE_U32,
1568 .getter = team_mcast_rejoin_count_get,
1569 .setter = team_mcast_rejoin_count_set,
1570 },
1571 {
1572 .name = "mcast_rejoin_interval",
1573 .type = TEAM_OPTION_TYPE_U32,
1574 .getter = team_mcast_rejoin_interval_get,
1575 .setter = team_mcast_rejoin_interval_set,
1576 },
1577 {
1578 .name = "enabled",
1579 .type = TEAM_OPTION_TYPE_BOOL,
1580 .per_port = true,
1581 .getter = team_port_en_option_get,
1582 .setter = team_port_en_option_set,
1583 },
1584 {
1585 .name = "user_linkup",
1586 .type = TEAM_OPTION_TYPE_BOOL,
1587 .per_port = true,
1588 .getter = team_user_linkup_option_get,
1589 .setter = team_user_linkup_option_set,
1590 },
1591 {
1592 .name = "user_linkup_enabled",
1593 .type = TEAM_OPTION_TYPE_BOOL,
1594 .per_port = true,
1595 .getter = team_user_linkup_en_option_get,
1596 .setter = team_user_linkup_en_option_set,
1597 },
1598 {
1599 .name = "priority",
1600 .type = TEAM_OPTION_TYPE_S32,
1601 .per_port = true,
1602 .getter = team_priority_option_get,
1603 .setter = team_priority_option_set,
1604 },
1605 {
1606 .name = "queue_id",
1607 .type = TEAM_OPTION_TYPE_U32,
1608 .per_port = true,
1609 .getter = team_queue_id_option_get,
1610 .setter = team_queue_id_option_set,
1611 },
1612 };
1613
1614
1615 static int team_init(struct net_device *dev)
1616 {
1617 struct team *team = netdev_priv(dev);
1618 int i;
1619 int err;
1620
1621 team->dev = dev;
1622 team_set_no_mode(team);
1623
1624 team->pcpu_stats = netdev_alloc_pcpu_stats(struct team_pcpu_stats);
1625 if (!team->pcpu_stats)
1626 return -ENOMEM;
1627
1628 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
1629 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
1630 INIT_LIST_HEAD(&team->port_list);
1631 err = team_queue_override_init(team);
1632 if (err)
1633 goto err_team_queue_override_init;
1634
1635 team_adjust_ops(team);
1636
1637 INIT_LIST_HEAD(&team->option_list);
1638 INIT_LIST_HEAD(&team->option_inst_list);
1639
1640 team_notify_peers_init(team);
1641 team_mcast_rejoin_init(team);
1642
1643 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1644 if (err)
1645 goto err_options_register;
1646 netif_carrier_off(dev);
1647
1648 lockdep_register_key(&team->team_lock_key);
1649 __mutex_init(&team->lock, "team->team_lock_key", &team->team_lock_key);
1650
1651 return 0;
1652
1653 err_options_register:
1654 team_mcast_rejoin_fini(team);
1655 team_notify_peers_fini(team);
1656 team_queue_override_fini(team);
1657 err_team_queue_override_init:
1658 free_percpu(team->pcpu_stats);
1659
1660 return err;
1661 }
1662
1663 static void team_uninit(struct net_device *dev)
1664 {
1665 struct team *team = netdev_priv(dev);
1666 struct team_port *port;
1667 struct team_port *tmp;
1668
1669 mutex_lock(&team->lock);
1670 list_for_each_entry_safe(port, tmp, &team->port_list, list)
1671 team_port_del(team, port->dev);
1672
1673 __team_change_mode(team, NULL); /* cleanup */
1674 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
1675 team_mcast_rejoin_fini(team);
1676 team_notify_peers_fini(team);
1677 team_queue_override_fini(team);
1678 mutex_unlock(&team->lock);
1679 netdev_change_features(dev);
1680 lockdep_unregister_key(&team->team_lock_key);
1681 }
1682
1683 static void team_destructor(struct net_device *dev)
1684 {
1685 struct team *team = netdev_priv(dev);
1686
1687 free_percpu(team->pcpu_stats);
1688 }
1689
1690 static int team_open(struct net_device *dev)
1691 {
1692 return 0;
1693 }
1694
1695 static int team_close(struct net_device *dev)
1696 {
1697 return 0;
1698 }
1699
1700 /*
1701 * note: already called with rcu_read_lock
1702 */
1703 static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1704 {
1705 struct team *team = netdev_priv(dev);
1706 bool tx_success;
1707 unsigned int len = skb->len;
1708
1709 tx_success = team_queue_override_transmit(team, skb);
1710 if (!tx_success)
1711 tx_success = team->ops.transmit(team, skb);
1712 if (tx_success) {
1713 struct team_pcpu_stats *pcpu_stats;
1714
1715 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1716 u64_stats_update_begin(&pcpu_stats->syncp);
1717 pcpu_stats->tx_packets++;
1718 pcpu_stats->tx_bytes += len;
1719 u64_stats_update_end(&pcpu_stats->syncp);
1720 } else {
1721 this_cpu_inc(team->pcpu_stats->tx_dropped);
1722 }
1723
1724 return NETDEV_TX_OK;
1725 }
1726
1727 static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb,
1728 struct net_device *sb_dev)
1729 {
1730 /*
1731 * This helper function exists to help dev_pick_tx get the correct
1732 * destination queue. Using a helper function skips a call to
1733 * skb_tx_hash and will put the skbs in the queue we expect on their
1734 * way down to the team driver.
1735 */
1736 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1737
1738 /*
1739 * Save the original txq to restore before passing to the driver
1740 */
1741 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1742
1743 if (unlikely(txq >= dev->real_num_tx_queues)) {
1744 do {
1745 txq -= dev->real_num_tx_queues;
1746 } while (txq >= dev->real_num_tx_queues);
1747 }
1748 return txq;
1749 }
1750
1751 static void team_change_rx_flags(struct net_device *dev, int change)
1752 {
1753 struct team *team = netdev_priv(dev);
1754 struct team_port *port;
1755 int inc;
1756
1757 rcu_read_lock();
1758 list_for_each_entry_rcu(port, &team->port_list, list) {
1759 if (change & IFF_PROMISC) {
1760 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1761 dev_set_promiscuity(port->dev, inc);
1762 }
1763 if (change & IFF_ALLMULTI) {
1764 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1765 dev_set_allmulti(port->dev, inc);
1766 }
1767 }
1768 rcu_read_unlock();
1769 }
1770
1771 static void team_set_rx_mode(struct net_device *dev)
1772 {
1773 struct team *team = netdev_priv(dev);
1774 struct team_port *port;
1775
1776 rcu_read_lock();
1777 list_for_each_entry_rcu(port, &team->port_list, list) {
1778 dev_uc_sync_multiple(port->dev, dev);
1779 dev_mc_sync_multiple(port->dev, dev);
1780 }
1781 rcu_read_unlock();
1782 }
1783
1784 static int team_set_mac_address(struct net_device *dev, void *p)
1785 {
1786 struct sockaddr *addr = p;
1787 struct team *team = netdev_priv(dev);
1788 struct team_port *port;
1789
1790 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data))
1791 return -EADDRNOTAVAIL;
1792 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1793 mutex_lock(&team->lock);
1794 list_for_each_entry(port, &team->port_list, list)
1795 if (team->ops.port_change_dev_addr)
1796 team->ops.port_change_dev_addr(team, port);
1797 mutex_unlock(&team->lock);
1798 return 0;
1799 }
1800
1801 static int team_change_mtu(struct net_device *dev, int new_mtu)
1802 {
1803 struct team *team = netdev_priv(dev);
1804 struct team_port *port;
1805 int err;
1806
1807 /*
1808 * Alhough this is reader, it's guarded by team lock. It's not possible
1809 * to traverse list in reverse under rcu_read_lock
1810 */
1811 mutex_lock(&team->lock);
1812 team->port_mtu_change_allowed = true;
1813 list_for_each_entry(port, &team->port_list, list) {
1814 err = dev_set_mtu(port->dev, new_mtu);
1815 if (err) {
1816 netdev_err(dev, "Device %s failed to change mtu",
1817 port->dev->name);
1818 goto unwind;
1819 }
1820 }
1821 team->port_mtu_change_allowed = false;
1822 mutex_unlock(&team->lock);
1823
1824 dev->mtu = new_mtu;
1825
1826 return 0;
1827
1828 unwind:
1829 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1830 dev_set_mtu(port->dev, dev->mtu);
1831 team->port_mtu_change_allowed = false;
1832 mutex_unlock(&team->lock);
1833
1834 return err;
1835 }
1836
1837 static void
1838 team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1839 {
1840 struct team *team = netdev_priv(dev);
1841 struct team_pcpu_stats *p;
1842 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1843 u32 rx_dropped = 0, tx_dropped = 0, rx_nohandler = 0;
1844 unsigned int start;
1845 int i;
1846
1847 for_each_possible_cpu(i) {
1848 p = per_cpu_ptr(team->pcpu_stats, i);
1849 do {
1850 start = u64_stats_fetch_begin_irq(&p->syncp);
1851 rx_packets = p->rx_packets;
1852 rx_bytes = p->rx_bytes;
1853 rx_multicast = p->rx_multicast;
1854 tx_packets = p->tx_packets;
1855 tx_bytes = p->tx_bytes;
1856 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
1857
1858 stats->rx_packets += rx_packets;
1859 stats->rx_bytes += rx_bytes;
1860 stats->multicast += rx_multicast;
1861 stats->tx_packets += tx_packets;
1862 stats->tx_bytes += tx_bytes;
1863 /*
1864 * rx_dropped, tx_dropped & rx_nohandler are u32,
1865 * updated without syncp protection.
1866 */
1867 rx_dropped += p->rx_dropped;
1868 tx_dropped += p->tx_dropped;
1869 rx_nohandler += p->rx_nohandler;
1870 }
1871 stats->rx_dropped = rx_dropped;
1872 stats->tx_dropped = tx_dropped;
1873 stats->rx_nohandler = rx_nohandler;
1874 }
1875
1876 static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
1877 {
1878 struct team *team = netdev_priv(dev);
1879 struct team_port *port;
1880 int err;
1881
1882 /*
1883 * Alhough this is reader, it's guarded by team lock. It's not possible
1884 * to traverse list in reverse under rcu_read_lock
1885 */
1886 mutex_lock(&team->lock);
1887 list_for_each_entry(port, &team->port_list, list) {
1888 err = vlan_vid_add(port->dev, proto, vid);
1889 if (err)
1890 goto unwind;
1891 }
1892 mutex_unlock(&team->lock);
1893
1894 return 0;
1895
1896 unwind:
1897 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1898 vlan_vid_del(port->dev, proto, vid);
1899 mutex_unlock(&team->lock);
1900
1901 return err;
1902 }
1903
1904 static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
1905 {
1906 struct team *team = netdev_priv(dev);
1907 struct team_port *port;
1908
1909 mutex_lock(&team->lock);
1910 list_for_each_entry(port, &team->port_list, list)
1911 vlan_vid_del(port->dev, proto, vid);
1912 mutex_unlock(&team->lock);
1913
1914 return 0;
1915 }
1916
1917 #ifdef CONFIG_NET_POLL_CONTROLLER
1918 static void team_poll_controller(struct net_device *dev)
1919 {
1920 }
1921
1922 static void __team_netpoll_cleanup(struct team *team)
1923 {
1924 struct team_port *port;
1925
1926 list_for_each_entry(port, &team->port_list, list)
1927 team_port_disable_netpoll(port);
1928 }
1929
1930 static void team_netpoll_cleanup(struct net_device *dev)
1931 {
1932 struct team *team = netdev_priv(dev);
1933
1934 mutex_lock(&team->lock);
1935 __team_netpoll_cleanup(team);
1936 mutex_unlock(&team->lock);
1937 }
1938
1939 static int team_netpoll_setup(struct net_device *dev,
1940 struct netpoll_info *npifo)
1941 {
1942 struct team *team = netdev_priv(dev);
1943 struct team_port *port;
1944 int err = 0;
1945
1946 mutex_lock(&team->lock);
1947 list_for_each_entry(port, &team->port_list, list) {
1948 err = __team_port_enable_netpoll(port);
1949 if (err) {
1950 __team_netpoll_cleanup(team);
1951 break;
1952 }
1953 }
1954 mutex_unlock(&team->lock);
1955 return err;
1956 }
1957 #endif
1958
1959 static int team_add_slave(struct net_device *dev, struct net_device *port_dev,
1960 struct netlink_ext_ack *extack)
1961 {
1962 struct team *team = netdev_priv(dev);
1963 int err;
1964
1965 mutex_lock(&team->lock);
1966 err = team_port_add(team, port_dev, extack);
1967 mutex_unlock(&team->lock);
1968
1969 if (!err)
1970 netdev_change_features(dev);
1971
1972 return err;
1973 }
1974
1975 static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1976 {
1977 struct team *team = netdev_priv(dev);
1978 int err;
1979
1980 mutex_lock(&team->lock);
1981 err = team_port_del(team, port_dev);
1982 mutex_unlock(&team->lock);
1983
1984 if (err)
1985 return err;
1986
1987 if (netif_is_team_master(port_dev)) {
1988 lockdep_unregister_key(&team->team_lock_key);
1989 lockdep_register_key(&team->team_lock_key);
1990 lockdep_set_class(&team->lock, &team->team_lock_key);
1991 }
1992 netdev_change_features(dev);
1993
1994 return err;
1995 }
1996
1997 static netdev_features_t team_fix_features(struct net_device *dev,
1998 netdev_features_t features)
1999 {
2000 struct team_port *port;
2001 struct team *team = netdev_priv(dev);
2002 netdev_features_t mask;
2003
2004 mask = features;
2005 features &= ~NETIF_F_ONE_FOR_ALL;
2006 features |= NETIF_F_ALL_FOR_ALL;
2007
2008 rcu_read_lock();
2009 list_for_each_entry_rcu(port, &team->port_list, list) {
2010 features = netdev_increment_features(features,
2011 port->dev->features,
2012 mask);
2013 }
2014 rcu_read_unlock();
2015
2016 features = netdev_add_tso_features(features, mask);
2017
2018 return features;
2019 }
2020
2021 static int team_change_carrier(struct net_device *dev, bool new_carrier)
2022 {
2023 struct team *team = netdev_priv(dev);
2024
2025 team->user_carrier_enabled = true;
2026
2027 if (new_carrier)
2028 netif_carrier_on(dev);
2029 else
2030 netif_carrier_off(dev);
2031 return 0;
2032 }
2033
2034 static const struct net_device_ops team_netdev_ops = {
2035 .ndo_init = team_init,
2036 .ndo_uninit = team_uninit,
2037 .ndo_open = team_open,
2038 .ndo_stop = team_close,
2039 .ndo_start_xmit = team_xmit,
2040 .ndo_select_queue = team_select_queue,
2041 .ndo_change_rx_flags = team_change_rx_flags,
2042 .ndo_set_rx_mode = team_set_rx_mode,
2043 .ndo_set_mac_address = team_set_mac_address,
2044 .ndo_change_mtu = team_change_mtu,
2045 .ndo_get_stats64 = team_get_stats64,
2046 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
2047 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
2048 #ifdef CONFIG_NET_POLL_CONTROLLER
2049 .ndo_poll_controller = team_poll_controller,
2050 .ndo_netpoll_setup = team_netpoll_setup,
2051 .ndo_netpoll_cleanup = team_netpoll_cleanup,
2052 #endif
2053 .ndo_add_slave = team_add_slave,
2054 .ndo_del_slave = team_del_slave,
2055 .ndo_fix_features = team_fix_features,
2056 .ndo_change_carrier = team_change_carrier,
2057 .ndo_features_check = passthru_features_check,
2058 };
2059
2060 /***********************
2061 * ethtool interface
2062 ***********************/
2063
2064 static void team_ethtool_get_drvinfo(struct net_device *dev,
2065 struct ethtool_drvinfo *drvinfo)
2066 {
2067 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
2068 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
2069 }
2070
2071 static int team_ethtool_get_link_ksettings(struct net_device *dev,
2072 struct ethtool_link_ksettings *cmd)
2073 {
2074 struct team *team= netdev_priv(dev);
2075 unsigned long speed = 0;
2076 struct team_port *port;
2077
2078 cmd->base.duplex = DUPLEX_UNKNOWN;
2079 cmd->base.port = PORT_OTHER;
2080
2081 rcu_read_lock();
2082 list_for_each_entry_rcu(port, &team->port_list, list) {
2083 if (team_port_txable(port)) {
2084 if (port->state.speed != SPEED_UNKNOWN)
2085 speed += port->state.speed;
2086 if (cmd->base.duplex == DUPLEX_UNKNOWN &&
2087 port->state.duplex != DUPLEX_UNKNOWN)
2088 cmd->base.duplex = port->state.duplex;
2089 }
2090 }
2091 rcu_read_unlock();
2092
2093 cmd->base.speed = speed ? : SPEED_UNKNOWN;
2094
2095 return 0;
2096 }
2097
2098 static const struct ethtool_ops team_ethtool_ops = {
2099 .get_drvinfo = team_ethtool_get_drvinfo,
2100 .get_link = ethtool_op_get_link,
2101 .get_link_ksettings = team_ethtool_get_link_ksettings,
2102 };
2103
2104 /***********************
2105 * rt netlink interface
2106 ***********************/
2107
2108 static void team_setup_by_port(struct net_device *dev,
2109 struct net_device *port_dev)
2110 {
2111 dev->header_ops = port_dev->header_ops;
2112 dev->type = port_dev->type;
2113 dev->hard_header_len = port_dev->hard_header_len;
2114 dev->addr_len = port_dev->addr_len;
2115 dev->mtu = port_dev->mtu;
2116 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
2117 eth_hw_addr_inherit(dev, port_dev);
2118 }
2119
2120 static int team_dev_type_check_change(struct net_device *dev,
2121 struct net_device *port_dev)
2122 {
2123 struct team *team = netdev_priv(dev);
2124 char *portname = port_dev->name;
2125 int err;
2126
2127 if (dev->type == port_dev->type)
2128 return 0;
2129 if (!list_empty(&team->port_list)) {
2130 netdev_err(dev, "Device %s is of different type\n", portname);
2131 return -EBUSY;
2132 }
2133 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev);
2134 err = notifier_to_errno(err);
2135 if (err) {
2136 netdev_err(dev, "Refused to change device type\n");
2137 return err;
2138 }
2139 dev_uc_flush(dev);
2140 dev_mc_flush(dev);
2141 team_setup_by_port(dev, port_dev);
2142 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev);
2143 return 0;
2144 }
2145
2146 static void team_setup(struct net_device *dev)
2147 {
2148 ether_setup(dev);
2149 dev->max_mtu = ETH_MAX_MTU;
2150
2151 dev->netdev_ops = &team_netdev_ops;
2152 dev->ethtool_ops = &team_ethtool_ops;
2153 dev->needs_free_netdev = true;
2154 dev->priv_destructor = team_destructor;
2155 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
2156 dev->priv_flags |= IFF_NO_QUEUE;
2157 dev->priv_flags |= IFF_TEAM;
2158
2159 /*
2160 * Indicate we support unicast address filtering. That way core won't
2161 * bring us to promisc mode in case a unicast addr is added.
2162 * Let this up to underlay drivers.
2163 */
2164 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
2165
2166 dev->features |= NETIF_F_LLTX;
2167 dev->features |= NETIF_F_GRO;
2168
2169 /* Don't allow team devices to change network namespaces. */
2170 dev->features |= NETIF_F_NETNS_LOCAL;
2171
2172 dev->hw_features = TEAM_VLAN_FEATURES |
2173 NETIF_F_HW_VLAN_CTAG_RX |
2174 NETIF_F_HW_VLAN_CTAG_FILTER;
2175
2176 dev->hw_features |= NETIF_F_GSO_ENCAP_ALL | NETIF_F_GSO_UDP_L4;
2177 dev->features |= dev->hw_features;
2178 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX;
2179 }
2180
2181 static int team_newlink(struct net *src_net, struct net_device *dev,
2182 struct nlattr *tb[], struct nlattr *data[],
2183 struct netlink_ext_ack *extack)
2184 {
2185 if (tb[IFLA_ADDRESS] == NULL)
2186 eth_hw_addr_random(dev);
2187
2188 return register_netdevice(dev);
2189 }
2190
2191 static int team_validate(struct nlattr *tb[], struct nlattr *data[],
2192 struct netlink_ext_ack *extack)
2193 {
2194 if (tb[IFLA_ADDRESS]) {
2195 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
2196 return -EINVAL;
2197 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
2198 return -EADDRNOTAVAIL;
2199 }
2200 return 0;
2201 }
2202
2203 static unsigned int team_get_num_tx_queues(void)
2204 {
2205 return TEAM_DEFAULT_NUM_TX_QUEUES;
2206 }
2207
2208 static unsigned int team_get_num_rx_queues(void)
2209 {
2210 return TEAM_DEFAULT_NUM_RX_QUEUES;
2211 }
2212
2213 static struct rtnl_link_ops team_link_ops __read_mostly = {
2214 .kind = DRV_NAME,
2215 .priv_size = sizeof(struct team),
2216 .setup = team_setup,
2217 .newlink = team_newlink,
2218 .validate = team_validate,
2219 .get_num_tx_queues = team_get_num_tx_queues,
2220 .get_num_rx_queues = team_get_num_rx_queues,
2221 };
2222
2223
2224 /***********************************
2225 * Generic netlink custom interface
2226 ***********************************/
2227
2228 static struct genl_family team_nl_family;
2229
2230 static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
2231 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
2232 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
2233 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
2234 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
2235 };
2236
2237 static const struct nla_policy
2238 team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
2239 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
2240 [TEAM_ATTR_OPTION_NAME] = {
2241 .type = NLA_STRING,
2242 .len = TEAM_STRING_MAX_LEN,
2243 },
2244 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
2245 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
2246 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
2247 [TEAM_ATTR_OPTION_PORT_IFINDEX] = { .type = NLA_U32 },
2248 [TEAM_ATTR_OPTION_ARRAY_INDEX] = { .type = NLA_U32 },
2249 };
2250
2251 static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
2252 {
2253 struct sk_buff *msg;
2254 void *hdr;
2255 int err;
2256
2257 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2258 if (!msg)
2259 return -ENOMEM;
2260
2261 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
2262 &team_nl_family, 0, TEAM_CMD_NOOP);
2263 if (!hdr) {
2264 err = -EMSGSIZE;
2265 goto err_msg_put;
2266 }
2267
2268 genlmsg_end(msg, hdr);
2269
2270 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid);
2271
2272 err_msg_put:
2273 nlmsg_free(msg);
2274
2275 return err;
2276 }
2277
2278 /*
2279 * Netlink cmd functions should be locked by following two functions.
2280 * Since dev gets held here, that ensures dev won't disappear in between.
2281 */
2282 static struct team *team_nl_team_get(struct genl_info *info)
2283 {
2284 struct net *net = genl_info_net(info);
2285 int ifindex;
2286 struct net_device *dev;
2287 struct team *team;
2288
2289 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
2290 return NULL;
2291
2292 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
2293 dev = dev_get_by_index(net, ifindex);
2294 if (!dev || dev->netdev_ops != &team_netdev_ops) {
2295 if (dev)
2296 dev_put(dev);
2297 return NULL;
2298 }
2299
2300 team = netdev_priv(dev);
2301 mutex_lock(&team->lock);
2302 return team;
2303 }
2304
2305 static void team_nl_team_put(struct team *team)
2306 {
2307 mutex_unlock(&team->lock);
2308 dev_put(team->dev);
2309 }
2310
2311 typedef int team_nl_send_func_t(struct sk_buff *skb,
2312 struct team *team, u32 portid);
2313
2314 static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid)
2315 {
2316 return genlmsg_unicast(dev_net(team->dev), skb, portid);
2317 }
2318
2319 static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
2320 struct team_option_inst *opt_inst)
2321 {
2322 struct nlattr *option_item;
2323 struct team_option *option = opt_inst->option;
2324 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
2325 struct team_gsetter_ctx ctx;
2326 int err;
2327
2328 ctx.info = opt_inst_info;
2329 err = team_option_get(team, opt_inst, &ctx);
2330 if (err)
2331 return err;
2332
2333 option_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_OPTION);
2334 if (!option_item)
2335 return -EMSGSIZE;
2336
2337 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
2338 goto nest_cancel;
2339 if (opt_inst_info->port &&
2340 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
2341 opt_inst_info->port->dev->ifindex))
2342 goto nest_cancel;
2343 if (opt_inst->option->array_size &&
2344 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
2345 opt_inst_info->array_index))
2346 goto nest_cancel;
2347
2348 switch (option->type) {
2349 case TEAM_OPTION_TYPE_U32:
2350 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
2351 goto nest_cancel;
2352 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
2353 goto nest_cancel;
2354 break;
2355 case TEAM_OPTION_TYPE_STRING:
2356 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
2357 goto nest_cancel;
2358 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
2359 ctx.data.str_val))
2360 goto nest_cancel;
2361 break;
2362 case TEAM_OPTION_TYPE_BINARY:
2363 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
2364 goto nest_cancel;
2365 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
2366 ctx.data.bin_val.ptr))
2367 goto nest_cancel;
2368 break;
2369 case TEAM_OPTION_TYPE_BOOL:
2370 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
2371 goto nest_cancel;
2372 if (ctx.data.bool_val &&
2373 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
2374 goto nest_cancel;
2375 break;
2376 case TEAM_OPTION_TYPE_S32:
2377 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32))
2378 goto nest_cancel;
2379 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val))
2380 goto nest_cancel;
2381 break;
2382 default:
2383 BUG();
2384 }
2385 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
2386 goto nest_cancel;
2387 if (opt_inst->changed) {
2388 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
2389 goto nest_cancel;
2390 opt_inst->changed = false;
2391 }
2392 nla_nest_end(skb, option_item);
2393 return 0;
2394
2395 nest_cancel:
2396 nla_nest_cancel(skb, option_item);
2397 return -EMSGSIZE;
2398 }
2399
2400 static int __send_and_alloc_skb(struct sk_buff **pskb,
2401 struct team *team, u32 portid,
2402 team_nl_send_func_t *send_func)
2403 {
2404 int err;
2405
2406 if (*pskb) {
2407 err = send_func(*pskb, team, portid);
2408 if (err)
2409 return err;
2410 }
2411 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2412 if (!*pskb)
2413 return -ENOMEM;
2414 return 0;
2415 }
2416
2417 static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
2418 int flags, team_nl_send_func_t *send_func,
2419 struct list_head *sel_opt_inst_list)
2420 {
2421 struct nlattr *option_list;
2422 struct nlmsghdr *nlh;
2423 void *hdr;
2424 struct team_option_inst *opt_inst;
2425 int err;
2426 struct sk_buff *skb = NULL;
2427 bool incomplete;
2428 int i;
2429
2430 opt_inst = list_first_entry(sel_opt_inst_list,
2431 struct team_option_inst, tmp_list);
2432
2433 start_again:
2434 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2435 if (err)
2436 return err;
2437
2438 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2439 TEAM_CMD_OPTIONS_GET);
2440 if (!hdr) {
2441 nlmsg_free(skb);
2442 return -EMSGSIZE;
2443 }
2444
2445 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2446 goto nla_put_failure;
2447 option_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_OPTION);
2448 if (!option_list)
2449 goto nla_put_failure;
2450
2451 i = 0;
2452 incomplete = false;
2453 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
2454 err = team_nl_fill_one_option_get(skb, team, opt_inst);
2455 if (err) {
2456 if (err == -EMSGSIZE) {
2457 if (!i)
2458 goto errout;
2459 incomplete = true;
2460 break;
2461 }
2462 goto errout;
2463 }
2464 i++;
2465 }
2466
2467 nla_nest_end(skb, option_list);
2468 genlmsg_end(skb, hdr);
2469 if (incomplete)
2470 goto start_again;
2471
2472 send_done:
2473 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2474 if (!nlh) {
2475 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2476 if (err)
2477 return err;
2478 goto send_done;
2479 }
2480
2481 return send_func(skb, team, portid);
2482
2483 nla_put_failure:
2484 err = -EMSGSIZE;
2485 errout:
2486 nlmsg_free(skb);
2487 return err;
2488 }
2489
2490 static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
2491 {
2492 struct team *team;
2493 struct team_option_inst *opt_inst;
2494 int err;
2495 LIST_HEAD(sel_opt_inst_list);
2496
2497 team = team_nl_team_get(info);
2498 if (!team)
2499 return -EINVAL;
2500
2501 list_for_each_entry(opt_inst, &team->option_inst_list, list)
2502 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2503 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq,
2504 NLM_F_ACK, team_nl_send_unicast,
2505 &sel_opt_inst_list);
2506
2507 team_nl_team_put(team);
2508
2509 return err;
2510 }
2511
2512 static int team_nl_send_event_options_get(struct team *team,
2513 struct list_head *sel_opt_inst_list);
2514
2515 static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
2516 {
2517 struct team *team;
2518 int err = 0;
2519 int i;
2520 struct nlattr *nl_option;
2521
2522 rtnl_lock();
2523
2524 team = team_nl_team_get(info);
2525 if (!team) {
2526 err = -EINVAL;
2527 goto rtnl_unlock;
2528 }
2529
2530 err = -EINVAL;
2531 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
2532 err = -EINVAL;
2533 goto team_put;
2534 }
2535
2536 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
2537 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
2538 struct nlattr *attr;
2539 struct nlattr *attr_data;
2540 LIST_HEAD(opt_inst_list);
2541 enum team_option_type opt_type;
2542 int opt_port_ifindex = 0; /* != 0 for per-port options */
2543 u32 opt_array_index = 0;
2544 bool opt_is_array = false;
2545 struct team_option_inst *opt_inst;
2546 char *opt_name;
2547 bool opt_found = false;
2548
2549 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
2550 err = -EINVAL;
2551 goto team_put;
2552 }
2553 err = nla_parse_nested_deprecated(opt_attrs,
2554 TEAM_ATTR_OPTION_MAX,
2555 nl_option,
2556 team_nl_option_policy,
2557 info->extack);
2558 if (err)
2559 goto team_put;
2560 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
2561 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
2562 err = -EINVAL;
2563 goto team_put;
2564 }
2565 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
2566 case NLA_U32:
2567 opt_type = TEAM_OPTION_TYPE_U32;
2568 break;
2569 case NLA_STRING:
2570 opt_type = TEAM_OPTION_TYPE_STRING;
2571 break;
2572 case NLA_BINARY:
2573 opt_type = TEAM_OPTION_TYPE_BINARY;
2574 break;
2575 case NLA_FLAG:
2576 opt_type = TEAM_OPTION_TYPE_BOOL;
2577 break;
2578 case NLA_S32:
2579 opt_type = TEAM_OPTION_TYPE_S32;
2580 break;
2581 default:
2582 goto team_put;
2583 }
2584
2585 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
2586 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
2587 err = -EINVAL;
2588 goto team_put;
2589 }
2590
2591 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
2592 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
2593 if (attr)
2594 opt_port_ifindex = nla_get_u32(attr);
2595
2596 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
2597 if (attr) {
2598 opt_is_array = true;
2599 opt_array_index = nla_get_u32(attr);
2600 }
2601
2602 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2603 struct team_option *option = opt_inst->option;
2604 struct team_gsetter_ctx ctx;
2605 struct team_option_inst_info *opt_inst_info;
2606 int tmp_ifindex;
2607
2608 opt_inst_info = &opt_inst->info;
2609 tmp_ifindex = opt_inst_info->port ?
2610 opt_inst_info->port->dev->ifindex : 0;
2611 if (option->type != opt_type ||
2612 strcmp(option->name, opt_name) ||
2613 tmp_ifindex != opt_port_ifindex ||
2614 (option->array_size && !opt_is_array) ||
2615 opt_inst_info->array_index != opt_array_index)
2616 continue;
2617 opt_found = true;
2618 ctx.info = opt_inst_info;
2619 switch (opt_type) {
2620 case TEAM_OPTION_TYPE_U32:
2621 ctx.data.u32_val = nla_get_u32(attr_data);
2622 break;
2623 case TEAM_OPTION_TYPE_STRING:
2624 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2625 err = -EINVAL;
2626 goto team_put;
2627 }
2628 ctx.data.str_val = nla_data(attr_data);
2629 break;
2630 case TEAM_OPTION_TYPE_BINARY:
2631 ctx.data.bin_val.len = nla_len(attr_data);
2632 ctx.data.bin_val.ptr = nla_data(attr_data);
2633 break;
2634 case TEAM_OPTION_TYPE_BOOL:
2635 ctx.data.bool_val = attr_data ? true : false;
2636 break;
2637 case TEAM_OPTION_TYPE_S32:
2638 ctx.data.s32_val = nla_get_s32(attr_data);
2639 break;
2640 default:
2641 BUG();
2642 }
2643 err = team_option_set(team, opt_inst, &ctx);
2644 if (err)
2645 goto team_put;
2646 opt_inst->changed = true;
2647 list_add(&opt_inst->tmp_list, &opt_inst_list);
2648 }
2649 if (!opt_found) {
2650 err = -ENOENT;
2651 goto team_put;
2652 }
2653
2654 err = team_nl_send_event_options_get(team, &opt_inst_list);
2655 if (err)
2656 break;
2657 }
2658
2659 team_put:
2660 team_nl_team_put(team);
2661 rtnl_unlock:
2662 rtnl_unlock();
2663 return err;
2664 }
2665
2666 static int team_nl_fill_one_port_get(struct sk_buff *skb,
2667 struct team_port *port)
2668 {
2669 struct nlattr *port_item;
2670
2671 port_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_PORT);
2672 if (!port_item)
2673 goto nest_cancel;
2674 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2675 goto nest_cancel;
2676 if (port->changed) {
2677 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2678 goto nest_cancel;
2679 port->changed = false;
2680 }
2681 if ((port->removed &&
2682 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2683 (port->state.linkup &&
2684 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2685 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2686 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2687 goto nest_cancel;
2688 nla_nest_end(skb, port_item);
2689 return 0;
2690
2691 nest_cancel:
2692 nla_nest_cancel(skb, port_item);
2693 return -EMSGSIZE;
2694 }
2695
2696 static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,
2697 int flags, team_nl_send_func_t *send_func,
2698 struct team_port *one_port)
2699 {
2700 struct nlattr *port_list;
2701 struct nlmsghdr *nlh;
2702 void *hdr;
2703 struct team_port *port;
2704 int err;
2705 struct sk_buff *skb = NULL;
2706 bool incomplete;
2707 int i;
2708
2709 port = list_first_entry_or_null(&team->port_list,
2710 struct team_port, list);
2711
2712 start_again:
2713 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2714 if (err)
2715 return err;
2716
2717 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2718 TEAM_CMD_PORT_LIST_GET);
2719 if (!hdr) {
2720 nlmsg_free(skb);
2721 return -EMSGSIZE;
2722 }
2723
2724 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2725 goto nla_put_failure;
2726 port_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_PORT);
2727 if (!port_list)
2728 goto nla_put_failure;
2729
2730 i = 0;
2731 incomplete = false;
2732
2733 /* If one port is selected, called wants to send port list containing
2734 * only this port. Otherwise go through all listed ports and send all
2735 */
2736 if (one_port) {
2737 err = team_nl_fill_one_port_get(skb, one_port);
2738 if (err)
2739 goto errout;
2740 } else if (port) {
2741 list_for_each_entry_from(port, &team->port_list, list) {
2742 err = team_nl_fill_one_port_get(skb, port);
2743 if (err) {
2744 if (err == -EMSGSIZE) {
2745 if (!i)
2746 goto errout;
2747 incomplete = true;
2748 break;
2749 }
2750 goto errout;
2751 }
2752 i++;
2753 }
2754 }
2755
2756 nla_nest_end(skb, port_list);
2757 genlmsg_end(skb, hdr);
2758 if (incomplete)
2759 goto start_again;
2760
2761 send_done:
2762 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2763 if (!nlh) {
2764 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2765 if (err)
2766 return err;
2767 goto send_done;
2768 }
2769
2770 return send_func(skb, team, portid);
2771
2772 nla_put_failure:
2773 err = -EMSGSIZE;
2774 errout:
2775 nlmsg_free(skb);
2776 return err;
2777 }
2778
2779 static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2780 struct genl_info *info)
2781 {
2782 struct team *team;
2783 int err;
2784
2785 team = team_nl_team_get(info);
2786 if (!team)
2787 return -EINVAL;
2788
2789 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq,
2790 NLM_F_ACK, team_nl_send_unicast, NULL);
2791
2792 team_nl_team_put(team);
2793
2794 return err;
2795 }
2796
2797 static const struct genl_ops team_nl_ops[] = {
2798 {
2799 .cmd = TEAM_CMD_NOOP,
2800 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2801 .doit = team_nl_cmd_noop,
2802 },
2803 {
2804 .cmd = TEAM_CMD_OPTIONS_SET,
2805 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2806 .doit = team_nl_cmd_options_set,
2807 .flags = GENL_ADMIN_PERM,
2808 },
2809 {
2810 .cmd = TEAM_CMD_OPTIONS_GET,
2811 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2812 .doit = team_nl_cmd_options_get,
2813 .flags = GENL_ADMIN_PERM,
2814 },
2815 {
2816 .cmd = TEAM_CMD_PORT_LIST_GET,
2817 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2818 .doit = team_nl_cmd_port_list_get,
2819 .flags = GENL_ADMIN_PERM,
2820 },
2821 };
2822
2823 static const struct genl_multicast_group team_nl_mcgrps[] = {
2824 { .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, },
2825 };
2826
2827 static struct genl_family team_nl_family __ro_after_init = {
2828 .name = TEAM_GENL_NAME,
2829 .version = TEAM_GENL_VERSION,
2830 .maxattr = TEAM_ATTR_MAX,
2831 .policy = team_nl_policy,
2832 .netnsok = true,
2833 .module = THIS_MODULE,
2834 .ops = team_nl_ops,
2835 .n_ops = ARRAY_SIZE(team_nl_ops),
2836 .mcgrps = team_nl_mcgrps,
2837 .n_mcgrps = ARRAY_SIZE(team_nl_mcgrps),
2838 };
2839
2840 static int team_nl_send_multicast(struct sk_buff *skb,
2841 struct team *team, u32 portid)
2842 {
2843 return genlmsg_multicast_netns(&team_nl_family, dev_net(team->dev),
2844 skb, 0, 0, GFP_KERNEL);
2845 }
2846
2847 static int team_nl_send_event_options_get(struct team *team,
2848 struct list_head *sel_opt_inst_list)
2849 {
2850 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2851 sel_opt_inst_list);
2852 }
2853
2854 static int team_nl_send_event_port_get(struct team *team,
2855 struct team_port *port)
2856 {
2857 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast,
2858 port);
2859 }
2860
2861 static int __init team_nl_init(void)
2862 {
2863 return genl_register_family(&team_nl_family);
2864 }
2865
2866 static void team_nl_fini(void)
2867 {
2868 genl_unregister_family(&team_nl_family);
2869 }
2870
2871
2872 /******************
2873 * Change checkers
2874 ******************/
2875
2876 static void __team_options_change_check(struct team *team)
2877 {
2878 int err;
2879 struct team_option_inst *opt_inst;
2880 LIST_HEAD(sel_opt_inst_list);
2881
2882 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2883 if (opt_inst->changed)
2884 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2885 }
2886 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
2887 if (err && err != -ESRCH)
2888 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2889 err);
2890 }
2891
2892 /* rtnl lock is held */
2893
2894 static void __team_port_change_send(struct team_port *port, bool linkup)
2895 {
2896 int err;
2897
2898 port->changed = true;
2899 port->state.linkup = linkup;
2900 team_refresh_port_linkup(port);
2901 if (linkup) {
2902 struct ethtool_link_ksettings ecmd;
2903
2904 err = __ethtool_get_link_ksettings(port->dev, &ecmd);
2905 if (!err) {
2906 port->state.speed = ecmd.base.speed;
2907 port->state.duplex = ecmd.base.duplex;
2908 goto send_event;
2909 }
2910 }
2911 port->state.speed = 0;
2912 port->state.duplex = 0;
2913
2914 send_event:
2915 err = team_nl_send_event_port_get(port->team, port);
2916 if (err && err != -ESRCH)
2917 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
2918 port->dev->name, err);
2919
2920 }
2921
2922 static void __team_carrier_check(struct team *team)
2923 {
2924 struct team_port *port;
2925 bool team_linkup;
2926
2927 if (team->user_carrier_enabled)
2928 return;
2929
2930 team_linkup = false;
2931 list_for_each_entry(port, &team->port_list, list) {
2932 if (port->linkup) {
2933 team_linkup = true;
2934 break;
2935 }
2936 }
2937
2938 if (team_linkup)
2939 netif_carrier_on(team->dev);
2940 else
2941 netif_carrier_off(team->dev);
2942 }
2943
2944 static void __team_port_change_check(struct team_port *port, bool linkup)
2945 {
2946 if (port->state.linkup != linkup)
2947 __team_port_change_send(port, linkup);
2948 __team_carrier_check(port->team);
2949 }
2950
2951 static void __team_port_change_port_added(struct team_port *port, bool linkup)
2952 {
2953 __team_port_change_send(port, linkup);
2954 __team_carrier_check(port->team);
2955 }
2956
2957 static void __team_port_change_port_removed(struct team_port *port)
2958 {
2959 port->removed = true;
2960 __team_port_change_send(port, false);
2961 __team_carrier_check(port->team);
2962 }
2963
2964 static void team_port_change_check(struct team_port *port, bool linkup)
2965 {
2966 struct team *team = port->team;
2967
2968 mutex_lock(&team->lock);
2969 __team_port_change_check(port, linkup);
2970 mutex_unlock(&team->lock);
2971 }
2972
2973
2974 /************************************
2975 * Net device notifier event handler
2976 ************************************/
2977
2978 static int team_device_event(struct notifier_block *unused,
2979 unsigned long event, void *ptr)
2980 {
2981 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2982 struct team_port *port;
2983
2984 port = team_port_get_rtnl(dev);
2985 if (!port)
2986 return NOTIFY_DONE;
2987
2988 switch (event) {
2989 case NETDEV_UP:
2990 if (netif_oper_up(dev))
2991 team_port_change_check(port, true);
2992 break;
2993 case NETDEV_DOWN:
2994 team_port_change_check(port, false);
2995 break;
2996 case NETDEV_CHANGE:
2997 if (netif_running(port->dev))
2998 team_port_change_check(port,
2999 !!netif_oper_up(port->dev));
3000 break;
3001 case NETDEV_UNREGISTER:
3002 team_del_slave(port->team->dev, dev);
3003 break;
3004 case NETDEV_FEAT_CHANGE:
3005 team_compute_features(port->team);
3006 break;
3007 case NETDEV_PRECHANGEMTU:
3008 /* Forbid to change mtu of underlaying device */
3009 if (!port->team->port_mtu_change_allowed)
3010 return NOTIFY_BAD;
3011 break;
3012 case NETDEV_PRE_TYPE_CHANGE:
3013 /* Forbid to change type of underlaying device */
3014 return NOTIFY_BAD;
3015 case NETDEV_RESEND_IGMP:
3016 /* Propagate to master device */
3017 call_netdevice_notifiers(event, port->team->dev);
3018 break;
3019 }
3020 return NOTIFY_DONE;
3021 }
3022
3023 static struct notifier_block team_notifier_block __read_mostly = {
3024 .notifier_call = team_device_event,
3025 };
3026
3027
3028 /***********************
3029 * Module init and exit
3030 ***********************/
3031
3032 static int __init team_module_init(void)
3033 {
3034 int err;
3035
3036 register_netdevice_notifier(&team_notifier_block);
3037
3038 err = rtnl_link_register(&team_link_ops);
3039 if (err)
3040 goto err_rtnl_reg;
3041
3042 err = team_nl_init();
3043 if (err)
3044 goto err_nl_init;
3045
3046 return 0;
3047
3048 err_nl_init:
3049 rtnl_link_unregister(&team_link_ops);
3050
3051 err_rtnl_reg:
3052 unregister_netdevice_notifier(&team_notifier_block);
3053
3054 return err;
3055 }
3056
3057 static void __exit team_module_exit(void)
3058 {
3059 team_nl_fini();
3060 rtnl_link_unregister(&team_link_ops);
3061 unregister_netdevice_notifier(&team_notifier_block);
3062 }
3063
3064 module_init(team_module_init);
3065 module_exit(team_module_exit);
3066
3067 MODULE_LICENSE("GPL v2");
3068 MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
3069 MODULE_DESCRIPTION("Ethernet team device driver");
3070 MODULE_ALIAS_RTNL_LINK(DRV_NAME);
Linux with added FPC-III support