Loading...
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/ethtool.h>
8#include <linux/kernel.h>
9#include <linux/types.h>
10#include <linux/module.h>
11#include <linux/init.h>
12#include <linux/slab.h>
13#include <linux/rcupdate.h>
14#include <linux/errno.h>
15#include <linux/ctype.h>
16#include <linux/notifier.h>
17#include <linux/netdevice.h>
18#include <linux/netpoll.h>
19#include <linux/if_vlan.h>
20#include <linux/if_arp.h>
21#include <linux/socket.h>
22#include <linux/etherdevice.h>
23#include <linux/rtnetlink.h>
24#include <net/rtnetlink.h>
25#include <net/genetlink.h>
26#include <net/netlink.h>
27#include <net/sch_generic.h>
28#include <generated/utsrelease.h>
29#include <linux/if_team.h>
30
31#define DRV_NAME "team"
32
33
34/**********
35 * Helpers
36 **********/
37
38static struct team_port *team_port_get_rtnl(const struct net_device *dev)
39{
40 struct team_port *port = rtnl_dereference(dev->rx_handler_data);
41
42 return netif_is_team_port(dev) ? port : NULL;
43}
44
45/*
46 * Since the ability to change device address for open port device is tested in
47 * team_port_add, this function can be called without control of return value
48 */
49static int __set_port_dev_addr(struct net_device *port_dev,
50 const unsigned char *dev_addr)
51{
52 struct sockaddr_storage addr;
53
54 memcpy(addr.__data, dev_addr, port_dev->addr_len);
55 addr.ss_family = port_dev->type;
56 return dev_set_mac_address(port_dev, (struct sockaddr *)&addr, NULL);
57}
58
59static int team_port_set_orig_dev_addr(struct team_port *port)
60{
61 return __set_port_dev_addr(port->dev, port->orig.dev_addr);
62}
63
64static int team_port_set_team_dev_addr(struct team *team,
65 struct team_port *port)
66{
67 return __set_port_dev_addr(port->dev, team->dev->dev_addr);
68}
69
70int team_modeop_port_enter(struct team *team, struct team_port *port)
71{
72 return team_port_set_team_dev_addr(team, port);
73}
74EXPORT_SYMBOL(team_modeop_port_enter);
75
76void team_modeop_port_change_dev_addr(struct team *team,
77 struct team_port *port)
78{
79 team_port_set_team_dev_addr(team, port);
80}
81EXPORT_SYMBOL(team_modeop_port_change_dev_addr);
82
83static void team_lower_state_changed(struct team_port *port)
84{
85 struct netdev_lag_lower_state_info info;
86
87 info.link_up = port->linkup;
88 info.tx_enabled = team_port_enabled(port);
89 netdev_lower_state_changed(port->dev, &info);
90}
91
92static void team_refresh_port_linkup(struct team_port *port)
93{
94 bool new_linkup = port->user.linkup_enabled ? port->user.linkup :
95 port->state.linkup;
96
97 if (port->linkup != new_linkup) {
98 port->linkup = new_linkup;
99 team_lower_state_changed(port);
100 }
101}
102
103
104/*******************
105 * Options handling
106 *******************/
107
108struct team_option_inst { /* One for each option instance */
109 struct list_head list;
110 struct list_head tmp_list;
111 struct team_option *option;
112 struct team_option_inst_info info;
113 bool changed;
114 bool removed;
115};
116
117static struct team_option *__team_find_option(struct team *team,
118 const char *opt_name)
119{
120 struct team_option *option;
121
122 list_for_each_entry(option, &team->option_list, list) {
123 if (strcmp(option->name, opt_name) == 0)
124 return option;
125 }
126 return NULL;
127}
128
129static void __team_option_inst_del(struct team_option_inst *opt_inst)
130{
131 list_del(&opt_inst->list);
132 kfree(opt_inst);
133}
134
135static void __team_option_inst_del_option(struct team *team,
136 struct team_option *option)
137{
138 struct team_option_inst *opt_inst, *tmp;
139
140 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
141 if (opt_inst->option == option)
142 __team_option_inst_del(opt_inst);
143 }
144}
145
146static int __team_option_inst_add(struct team *team, struct team_option *option,
147 struct team_port *port)
148{
149 struct team_option_inst *opt_inst;
150 unsigned int array_size;
151 unsigned int i;
152 int err;
153
154 array_size = option->array_size;
155 if (!array_size)
156 array_size = 1; /* No array but still need one instance */
157
158 for (i = 0; i < array_size; i++) {
159 opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL);
160 if (!opt_inst)
161 return -ENOMEM;
162 opt_inst->option = option;
163 opt_inst->info.port = port;
164 opt_inst->info.array_index = i;
165 opt_inst->changed = true;
166 opt_inst->removed = false;
167 list_add_tail(&opt_inst->list, &team->option_inst_list);
168 if (option->init) {
169 err = option->init(team, &opt_inst->info);
170 if (err)
171 return err;
172 }
173
174 }
175 return 0;
176}
177
178static int __team_option_inst_add_option(struct team *team,
179 struct team_option *option)
180{
181 int err;
182
183 if (!option->per_port) {
184 err = __team_option_inst_add(team, option, NULL);
185 if (err)
186 goto inst_del_option;
187 }
188 return 0;
189
190inst_del_option:
191 __team_option_inst_del_option(team, option);
192 return err;
193}
194
195static void __team_option_inst_mark_removed_option(struct team *team,
196 struct team_option *option)
197{
198 struct team_option_inst *opt_inst;
199
200 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
201 if (opt_inst->option == option) {
202 opt_inst->changed = true;
203 opt_inst->removed = true;
204 }
205 }
206}
207
208static void __team_option_inst_del_port(struct team *team,
209 struct team_port *port)
210{
211 struct team_option_inst *opt_inst, *tmp;
212
213 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
214 if (opt_inst->option->per_port &&
215 opt_inst->info.port == port)
216 __team_option_inst_del(opt_inst);
217 }
218}
219
220static int __team_option_inst_add_port(struct team *team,
221 struct team_port *port)
222{
223 struct team_option *option;
224 int err;
225
226 list_for_each_entry(option, &team->option_list, list) {
227 if (!option->per_port)
228 continue;
229 err = __team_option_inst_add(team, option, port);
230 if (err)
231 goto inst_del_port;
232 }
233 return 0;
234
235inst_del_port:
236 __team_option_inst_del_port(team, port);
237 return err;
238}
239
240static void __team_option_inst_mark_removed_port(struct team *team,
241 struct team_port *port)
242{
243 struct team_option_inst *opt_inst;
244
245 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
246 if (opt_inst->info.port == port) {
247 opt_inst->changed = true;
248 opt_inst->removed = true;
249 }
250 }
251}
252
253static int __team_options_register(struct team *team,
254 const struct team_option *option,
255 size_t option_count)
256{
257 int i;
258 struct team_option **dst_opts;
259 int err;
260
261 dst_opts = kcalloc(option_count, sizeof(struct team_option *),
262 GFP_KERNEL);
263 if (!dst_opts)
264 return -ENOMEM;
265 for (i = 0; i < option_count; i++, option++) {
266 if (__team_find_option(team, option->name)) {
267 err = -EEXIST;
268 goto alloc_rollback;
269 }
270 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL);
271 if (!dst_opts[i]) {
272 err = -ENOMEM;
273 goto alloc_rollback;
274 }
275 }
276
277 for (i = 0; i < option_count; i++) {
278 err = __team_option_inst_add_option(team, dst_opts[i]);
279 if (err)
280 goto inst_rollback;
281 list_add_tail(&dst_opts[i]->list, &team->option_list);
282 }
283
284 kfree(dst_opts);
285 return 0;
286
287inst_rollback:
288 for (i--; i >= 0; i--)
289 __team_option_inst_del_option(team, dst_opts[i]);
290
291 i = option_count;
292alloc_rollback:
293 for (i--; i >= 0; i--)
294 kfree(dst_opts[i]);
295
296 kfree(dst_opts);
297 return err;
298}
299
300static void __team_options_mark_removed(struct team *team,
301 const struct team_option *option,
302 size_t option_count)
303{
304 int i;
305
306 for (i = 0; i < option_count; i++, option++) {
307 struct team_option *del_opt;
308
309 del_opt = __team_find_option(team, option->name);
310 if (del_opt)
311 __team_option_inst_mark_removed_option(team, del_opt);
312 }
313}
314
315static void __team_options_unregister(struct team *team,
316 const struct team_option *option,
317 size_t option_count)
318{
319 int i;
320
321 for (i = 0; i < option_count; i++, option++) {
322 struct team_option *del_opt;
323
324 del_opt = __team_find_option(team, option->name);
325 if (del_opt) {
326 __team_option_inst_del_option(team, del_opt);
327 list_del(&del_opt->list);
328 kfree(del_opt);
329 }
330 }
331}
332
333static void __team_options_change_check(struct team *team);
334
335int team_options_register(struct team *team,
336 const struct team_option *option,
337 size_t option_count)
338{
339 int err;
340
341 err = __team_options_register(team, option, option_count);
342 if (err)
343 return err;
344 __team_options_change_check(team);
345 return 0;
346}
347EXPORT_SYMBOL(team_options_register);
348
349void team_options_unregister(struct team *team,
350 const struct team_option *option,
351 size_t option_count)
352{
353 __team_options_mark_removed(team, option, option_count);
354 __team_options_change_check(team);
355 __team_options_unregister(team, option, option_count);
356}
357EXPORT_SYMBOL(team_options_unregister);
358
359static int team_option_get(struct team *team,
360 struct team_option_inst *opt_inst,
361 struct team_gsetter_ctx *ctx)
362{
363 if (!opt_inst->option->getter)
364 return -EOPNOTSUPP;
365 return opt_inst->option->getter(team, ctx);
366}
367
368static int team_option_set(struct team *team,
369 struct team_option_inst *opt_inst,
370 struct team_gsetter_ctx *ctx)
371{
372 if (!opt_inst->option->setter)
373 return -EOPNOTSUPP;
374 return opt_inst->option->setter(team, ctx);
375}
376
377void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info)
378{
379 struct team_option_inst *opt_inst;
380
381 opt_inst = container_of(opt_inst_info, struct team_option_inst, info);
382 opt_inst->changed = true;
383}
384EXPORT_SYMBOL(team_option_inst_set_change);
385
386void team_options_change_check(struct team *team)
387{
388 __team_options_change_check(team);
389}
390EXPORT_SYMBOL(team_options_change_check);
391
392
393/****************
394 * Mode handling
395 ****************/
396
397static LIST_HEAD(mode_list);
398static DEFINE_SPINLOCK(mode_list_lock);
399
400struct team_mode_item {
401 struct list_head list;
402 const struct team_mode *mode;
403};
404
405static struct team_mode_item *__find_mode(const char *kind)
406{
407 struct team_mode_item *mitem;
408
409 list_for_each_entry(mitem, &mode_list, list) {
410 if (strcmp(mitem->mode->kind, kind) == 0)
411 return mitem;
412 }
413 return NULL;
414}
415
416static bool is_good_mode_name(const char *name)
417{
418 while (*name != '\0') {
419 if (!isalpha(*name) && !isdigit(*name) && *name != '_')
420 return false;
421 name++;
422 }
423 return true;
424}
425
426int team_mode_register(const struct team_mode *mode)
427{
428 int err = 0;
429 struct team_mode_item *mitem;
430
431 if (!is_good_mode_name(mode->kind) ||
432 mode->priv_size > TEAM_MODE_PRIV_SIZE)
433 return -EINVAL;
434
435 mitem = kmalloc(sizeof(*mitem), GFP_KERNEL);
436 if (!mitem)
437 return -ENOMEM;
438
439 spin_lock(&mode_list_lock);
440 if (__find_mode(mode->kind)) {
441 err = -EEXIST;
442 kfree(mitem);
443 goto unlock;
444 }
445 mitem->mode = mode;
446 list_add_tail(&mitem->list, &mode_list);
447unlock:
448 spin_unlock(&mode_list_lock);
449 return err;
450}
451EXPORT_SYMBOL(team_mode_register);
452
453void team_mode_unregister(const struct team_mode *mode)
454{
455 struct team_mode_item *mitem;
456
457 spin_lock(&mode_list_lock);
458 mitem = __find_mode(mode->kind);
459 if (mitem) {
460 list_del_init(&mitem->list);
461 kfree(mitem);
462 }
463 spin_unlock(&mode_list_lock);
464}
465EXPORT_SYMBOL(team_mode_unregister);
466
467static const struct team_mode *team_mode_get(const char *kind)
468{
469 struct team_mode_item *mitem;
470 const struct team_mode *mode = NULL;
471
472 if (!try_module_get(THIS_MODULE))
473 return NULL;
474
475 spin_lock(&mode_list_lock);
476 mitem = __find_mode(kind);
477 if (!mitem) {
478 spin_unlock(&mode_list_lock);
479 request_module("team-mode-%s", kind);
480 spin_lock(&mode_list_lock);
481 mitem = __find_mode(kind);
482 }
483 if (mitem) {
484 mode = mitem->mode;
485 if (!try_module_get(mode->owner))
486 mode = NULL;
487 }
488
489 spin_unlock(&mode_list_lock);
490 module_put(THIS_MODULE);
491 return mode;
492}
493
494static void team_mode_put(const struct team_mode *mode)
495{
496 module_put(mode->owner);
497}
498
499static bool team_dummy_transmit(struct team *team, struct sk_buff *skb)
500{
501 dev_kfree_skb_any(skb);
502 return false;
503}
504
505static rx_handler_result_t team_dummy_receive(struct team *team,
506 struct team_port *port,
507 struct sk_buff *skb)
508{
509 return RX_HANDLER_ANOTHER;
510}
511
512static const struct team_mode __team_no_mode = {
513 .kind = "*NOMODE*",
514};
515
516static bool team_is_mode_set(struct team *team)
517{
518 return team->mode != &__team_no_mode;
519}
520
521static void team_set_no_mode(struct team *team)
522{
523 team->user_carrier_enabled = false;
524 team->mode = &__team_no_mode;
525}
526
527static void team_adjust_ops(struct team *team)
528{
529 /*
530 * To avoid checks in rx/tx skb paths, ensure here that non-null and
531 * correct ops are always set.
532 */
533
534 if (!team->en_port_count || !team_is_mode_set(team) ||
535 !team->mode->ops->transmit)
536 team->ops.transmit = team_dummy_transmit;
537 else
538 team->ops.transmit = team->mode->ops->transmit;
539
540 if (!team->en_port_count || !team_is_mode_set(team) ||
541 !team->mode->ops->receive)
542 team->ops.receive = team_dummy_receive;
543 else
544 team->ops.receive = team->mode->ops->receive;
545}
546
547/*
548 * We can benefit from the fact that it's ensured no port is present
549 * at the time of mode change. Therefore no packets are in fly so there's no
550 * need to set mode operations in any special way.
551 */
552static int __team_change_mode(struct team *team,
553 const struct team_mode *new_mode)
554{
555 /* Check if mode was previously set and do cleanup if so */
556 if (team_is_mode_set(team)) {
557 void (*exit_op)(struct team *team) = team->ops.exit;
558
559 /* Clear ops area so no callback is called any longer */
560 memset(&team->ops, 0, sizeof(struct team_mode_ops));
561 team_adjust_ops(team);
562
563 if (exit_op)
564 exit_op(team);
565 team_mode_put(team->mode);
566 team_set_no_mode(team);
567 /* zero private data area */
568 memset(&team->mode_priv, 0,
569 sizeof(struct team) - offsetof(struct team, mode_priv));
570 }
571
572 if (!new_mode)
573 return 0;
574
575 if (new_mode->ops->init) {
576 int err;
577
578 err = new_mode->ops->init(team);
579 if (err)
580 return err;
581 }
582
583 team->mode = new_mode;
584 memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops));
585 team_adjust_ops(team);
586
587 return 0;
588}
589
590static int team_change_mode(struct team *team, const char *kind)
591{
592 const struct team_mode *new_mode;
593 struct net_device *dev = team->dev;
594 int err;
595
596 if (!list_empty(&team->port_list)) {
597 netdev_err(dev, "No ports can be present during mode change\n");
598 return -EBUSY;
599 }
600
601 if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) {
602 netdev_err(dev, "Unable to change to the same mode the team is in\n");
603 return -EINVAL;
604 }
605
606 new_mode = team_mode_get(kind);
607 if (!new_mode) {
608 netdev_err(dev, "Mode \"%s\" not found\n", kind);
609 return -EINVAL;
610 }
611
612 err = __team_change_mode(team, new_mode);
613 if (err) {
614 netdev_err(dev, "Failed to change to mode \"%s\"\n", kind);
615 team_mode_put(new_mode);
616 return err;
617 }
618
619 netdev_info(dev, "Mode changed to \"%s\"\n", kind);
620 return 0;
621}
622
623
624/*********************
625 * Peers notification
626 *********************/
627
628static void team_notify_peers_work(struct work_struct *work)
629{
630 struct team *team;
631 int val;
632
633 team = container_of(work, struct team, notify_peers.dw.work);
634
635 if (!rtnl_trylock()) {
636 schedule_delayed_work(&team->notify_peers.dw, 0);
637 return;
638 }
639 val = atomic_dec_if_positive(&team->notify_peers.count_pending);
640 if (val < 0) {
641 rtnl_unlock();
642 return;
643 }
644 call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, team->dev);
645 rtnl_unlock();
646 if (val)
647 schedule_delayed_work(&team->notify_peers.dw,
648 msecs_to_jiffies(team->notify_peers.interval));
649}
650
651static void team_notify_peers(struct team *team)
652{
653 if (!team->notify_peers.count || !netif_running(team->dev))
654 return;
655 atomic_add(team->notify_peers.count, &team->notify_peers.count_pending);
656 schedule_delayed_work(&team->notify_peers.dw, 0);
657}
658
659static void team_notify_peers_init(struct team *team)
660{
661 INIT_DELAYED_WORK(&team->notify_peers.dw, team_notify_peers_work);
662}
663
664static void team_notify_peers_fini(struct team *team)
665{
666 cancel_delayed_work_sync(&team->notify_peers.dw);
667}
668
669
670/*******************************
671 * Send multicast group rejoins
672 *******************************/
673
674static void team_mcast_rejoin_work(struct work_struct *work)
675{
676 struct team *team;
677 int val;
678
679 team = container_of(work, struct team, mcast_rejoin.dw.work);
680
681 if (!rtnl_trylock()) {
682 schedule_delayed_work(&team->mcast_rejoin.dw, 0);
683 return;
684 }
685 val = atomic_dec_if_positive(&team->mcast_rejoin.count_pending);
686 if (val < 0) {
687 rtnl_unlock();
688 return;
689 }
690 call_netdevice_notifiers(NETDEV_RESEND_IGMP, team->dev);
691 rtnl_unlock();
692 if (val)
693 schedule_delayed_work(&team->mcast_rejoin.dw,
694 msecs_to_jiffies(team->mcast_rejoin.interval));
695}
696
697static void team_mcast_rejoin(struct team *team)
698{
699 if (!team->mcast_rejoin.count || !netif_running(team->dev))
700 return;
701 atomic_add(team->mcast_rejoin.count, &team->mcast_rejoin.count_pending);
702 schedule_delayed_work(&team->mcast_rejoin.dw, 0);
703}
704
705static void team_mcast_rejoin_init(struct team *team)
706{
707 INIT_DELAYED_WORK(&team->mcast_rejoin.dw, team_mcast_rejoin_work);
708}
709
710static void team_mcast_rejoin_fini(struct team *team)
711{
712 cancel_delayed_work_sync(&team->mcast_rejoin.dw);
713}
714
715
716/************************
717 * Rx path frame handler
718 ************************/
719
720/* note: already called with rcu_read_lock */
721static rx_handler_result_t team_handle_frame(struct sk_buff **pskb)
722{
723 struct sk_buff *skb = *pskb;
724 struct team_port *port;
725 struct team *team;
726 rx_handler_result_t res;
727
728 skb = skb_share_check(skb, GFP_ATOMIC);
729 if (!skb)
730 return RX_HANDLER_CONSUMED;
731
732 *pskb = skb;
733
734 port = team_port_get_rcu(skb->dev);
735 team = port->team;
736 if (!team_port_enabled(port)) {
737 if (is_link_local_ether_addr(eth_hdr(skb)->h_dest))
738 /* link-local packets are mostly useful when stack receives them
739 * with the link they arrive on.
740 */
741 return RX_HANDLER_PASS;
742 /* allow exact match delivery for disabled ports */
743 res = RX_HANDLER_EXACT;
744 } else {
745 res = team->ops.receive(team, port, skb);
746 }
747 if (res == RX_HANDLER_ANOTHER) {
748 struct team_pcpu_stats *pcpu_stats;
749
750 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
751 u64_stats_update_begin(&pcpu_stats->syncp);
752 u64_stats_inc(&pcpu_stats->rx_packets);
753 u64_stats_add(&pcpu_stats->rx_bytes, skb->len);
754 if (skb->pkt_type == PACKET_MULTICAST)
755 u64_stats_inc(&pcpu_stats->rx_multicast);
756 u64_stats_update_end(&pcpu_stats->syncp);
757
758 skb->dev = team->dev;
759 } else if (res == RX_HANDLER_EXACT) {
760 this_cpu_inc(team->pcpu_stats->rx_nohandler);
761 } else {
762 this_cpu_inc(team->pcpu_stats->rx_dropped);
763 }
764
765 return res;
766}
767
768
769/*************************************
770 * Multiqueue Tx port select override
771 *************************************/
772
773static int team_queue_override_init(struct team *team)
774{
775 struct list_head *listarr;
776 unsigned int queue_cnt = team->dev->num_tx_queues - 1;
777 unsigned int i;
778
779 if (!queue_cnt)
780 return 0;
781 listarr = kmalloc_array(queue_cnt, sizeof(struct list_head),
782 GFP_KERNEL);
783 if (!listarr)
784 return -ENOMEM;
785 team->qom_lists = listarr;
786 for (i = 0; i < queue_cnt; i++)
787 INIT_LIST_HEAD(listarr++);
788 return 0;
789}
790
791static void team_queue_override_fini(struct team *team)
792{
793 kfree(team->qom_lists);
794}
795
796static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id)
797{
798 return &team->qom_lists[queue_id - 1];
799}
800
801/*
802 * note: already called with rcu_read_lock
803 */
804static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb)
805{
806 struct list_head *qom_list;
807 struct team_port *port;
808
809 if (!team->queue_override_enabled || !skb->queue_mapping)
810 return false;
811 qom_list = __team_get_qom_list(team, skb->queue_mapping);
812 list_for_each_entry_rcu(port, qom_list, qom_list) {
813 if (!team_dev_queue_xmit(team, port, skb))
814 return true;
815 }
816 return false;
817}
818
819static void __team_queue_override_port_del(struct team *team,
820 struct team_port *port)
821{
822 if (!port->queue_id)
823 return;
824 list_del_rcu(&port->qom_list);
825}
826
827static bool team_queue_override_port_has_gt_prio_than(struct team_port *port,
828 struct team_port *cur)
829{
830 if (port->priority < cur->priority)
831 return true;
832 if (port->priority > cur->priority)
833 return false;
834 if (port->index < cur->index)
835 return true;
836 return false;
837}
838
839static void __team_queue_override_port_add(struct team *team,
840 struct team_port *port)
841{
842 struct team_port *cur;
843 struct list_head *qom_list;
844 struct list_head *node;
845
846 if (!port->queue_id)
847 return;
848 qom_list = __team_get_qom_list(team, port->queue_id);
849 node = qom_list;
850 list_for_each_entry(cur, qom_list, qom_list) {
851 if (team_queue_override_port_has_gt_prio_than(port, cur))
852 break;
853 node = &cur->qom_list;
854 }
855 list_add_tail_rcu(&port->qom_list, node);
856}
857
858static void __team_queue_override_enabled_check(struct team *team)
859{
860 struct team_port *port;
861 bool enabled = false;
862
863 list_for_each_entry(port, &team->port_list, list) {
864 if (port->queue_id) {
865 enabled = true;
866 break;
867 }
868 }
869 if (enabled == team->queue_override_enabled)
870 return;
871 netdev_dbg(team->dev, "%s queue override\n",
872 enabled ? "Enabling" : "Disabling");
873 team->queue_override_enabled = enabled;
874}
875
876static void team_queue_override_port_prio_changed(struct team *team,
877 struct team_port *port)
878{
879 if (!port->queue_id || team_port_enabled(port))
880 return;
881 __team_queue_override_port_del(team, port);
882 __team_queue_override_port_add(team, port);
883 __team_queue_override_enabled_check(team);
884}
885
886static void team_queue_override_port_change_queue_id(struct team *team,
887 struct team_port *port,
888 u16 new_queue_id)
889{
890 if (team_port_enabled(port)) {
891 __team_queue_override_port_del(team, port);
892 port->queue_id = new_queue_id;
893 __team_queue_override_port_add(team, port);
894 __team_queue_override_enabled_check(team);
895 } else {
896 port->queue_id = new_queue_id;
897 }
898}
899
900static void team_queue_override_port_add(struct team *team,
901 struct team_port *port)
902{
903 __team_queue_override_port_add(team, port);
904 __team_queue_override_enabled_check(team);
905}
906
907static void team_queue_override_port_del(struct team *team,
908 struct team_port *port)
909{
910 __team_queue_override_port_del(team, port);
911 __team_queue_override_enabled_check(team);
912}
913
914
915/****************
916 * Port handling
917 ****************/
918
919static bool team_port_find(const struct team *team,
920 const struct team_port *port)
921{
922 struct team_port *cur;
923
924 list_for_each_entry(cur, &team->port_list, list)
925 if (cur == port)
926 return true;
927 return false;
928}
929
930/*
931 * Enable/disable port by adding to enabled port hashlist and setting
932 * port->index (Might be racy so reader could see incorrect ifindex when
933 * processing a flying packet, but that is not a problem). Write guarded
934 * by team->lock.
935 */
936static void team_port_enable(struct team *team,
937 struct team_port *port)
938{
939 if (team_port_enabled(port))
940 return;
941 port->index = team->en_port_count++;
942 hlist_add_head_rcu(&port->hlist,
943 team_port_index_hash(team, port->index));
944 team_adjust_ops(team);
945 team_queue_override_port_add(team, port);
946 if (team->ops.port_enabled)
947 team->ops.port_enabled(team, port);
948 team_notify_peers(team);
949 team_mcast_rejoin(team);
950 team_lower_state_changed(port);
951}
952
953static void __reconstruct_port_hlist(struct team *team, int rm_index)
954{
955 int i;
956 struct team_port *port;
957
958 for (i = rm_index + 1; i < team->en_port_count; i++) {
959 port = team_get_port_by_index(team, i);
960 hlist_del_rcu(&port->hlist);
961 port->index--;
962 hlist_add_head_rcu(&port->hlist,
963 team_port_index_hash(team, port->index));
964 }
965}
966
967static void team_port_disable(struct team *team,
968 struct team_port *port)
969{
970 if (!team_port_enabled(port))
971 return;
972 if (team->ops.port_disabled)
973 team->ops.port_disabled(team, port);
974 hlist_del_rcu(&port->hlist);
975 __reconstruct_port_hlist(team, port->index);
976 port->index = -1;
977 team->en_port_count--;
978 team_queue_override_port_del(team, port);
979 team_adjust_ops(team);
980 team_lower_state_changed(port);
981}
982
983#define TEAM_VLAN_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \
984 NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | \
985 NETIF_F_HIGHDMA | NETIF_F_LRO)
986
987#define TEAM_ENC_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \
988 NETIF_F_RXCSUM | NETIF_F_GSO_SOFTWARE)
989
990static void __team_compute_features(struct team *team)
991{
992 struct team_port *port;
993 netdev_features_t vlan_features = TEAM_VLAN_FEATURES &
994 NETIF_F_ALL_FOR_ALL;
995 netdev_features_t enc_features = TEAM_ENC_FEATURES;
996 unsigned short max_hard_header_len = ETH_HLEN;
997 unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE |
998 IFF_XMIT_DST_RELEASE_PERM;
999
1000 rcu_read_lock();
1001 list_for_each_entry_rcu(port, &team->port_list, list) {
1002 vlan_features = netdev_increment_features(vlan_features,
1003 port->dev->vlan_features,
1004 TEAM_VLAN_FEATURES);
1005 enc_features =
1006 netdev_increment_features(enc_features,
1007 port->dev->hw_enc_features,
1008 TEAM_ENC_FEATURES);
1009
1010
1011 dst_release_flag &= port->dev->priv_flags;
1012 if (port->dev->hard_header_len > max_hard_header_len)
1013 max_hard_header_len = port->dev->hard_header_len;
1014 }
1015 rcu_read_unlock();
1016
1017 team->dev->vlan_features = vlan_features;
1018 team->dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL |
1019 NETIF_F_HW_VLAN_CTAG_TX |
1020 NETIF_F_HW_VLAN_STAG_TX;
1021 team->dev->hard_header_len = max_hard_header_len;
1022
1023 team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
1024 if (dst_release_flag == (IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM))
1025 team->dev->priv_flags |= IFF_XMIT_DST_RELEASE;
1026}
1027
1028static void team_compute_features(struct team *team)
1029{
1030 __team_compute_features(team);
1031 netdev_change_features(team->dev);
1032}
1033
1034static int team_port_enter(struct team *team, struct team_port *port)
1035{
1036 int err = 0;
1037
1038 dev_hold(team->dev);
1039 if (team->ops.port_enter) {
1040 err = team->ops.port_enter(team, port);
1041 if (err) {
1042 netdev_err(team->dev, "Device %s failed to enter team mode\n",
1043 port->dev->name);
1044 goto err_port_enter;
1045 }
1046 }
1047
1048 return 0;
1049
1050err_port_enter:
1051 dev_put(team->dev);
1052
1053 return err;
1054}
1055
1056static void team_port_leave(struct team *team, struct team_port *port)
1057{
1058 if (team->ops.port_leave)
1059 team->ops.port_leave(team, port);
1060 dev_put(team->dev);
1061}
1062
1063#ifdef CONFIG_NET_POLL_CONTROLLER
1064static int __team_port_enable_netpoll(struct team_port *port)
1065{
1066 struct netpoll *np;
1067 int err;
1068
1069 np = kzalloc(sizeof(*np), GFP_KERNEL);
1070 if (!np)
1071 return -ENOMEM;
1072
1073 err = __netpoll_setup(np, port->dev);
1074 if (err) {
1075 kfree(np);
1076 return err;
1077 }
1078 port->np = np;
1079 return err;
1080}
1081
1082static int team_port_enable_netpoll(struct team_port *port)
1083{
1084 if (!port->team->dev->npinfo)
1085 return 0;
1086
1087 return __team_port_enable_netpoll(port);
1088}
1089
1090static void team_port_disable_netpoll(struct team_port *port)
1091{
1092 struct netpoll *np = port->np;
1093
1094 if (!np)
1095 return;
1096 port->np = NULL;
1097
1098 __netpoll_free(np);
1099}
1100#else
1101static int team_port_enable_netpoll(struct team_port *port)
1102{
1103 return 0;
1104}
1105static void team_port_disable_netpoll(struct team_port *port)
1106{
1107}
1108#endif
1109
1110static int team_upper_dev_link(struct team *team, struct team_port *port,
1111 struct netlink_ext_ack *extack)
1112{
1113 struct netdev_lag_upper_info lag_upper_info;
1114 int err;
1115
1116 lag_upper_info.tx_type = team->mode->lag_tx_type;
1117 lag_upper_info.hash_type = NETDEV_LAG_HASH_UNKNOWN;
1118 err = netdev_master_upper_dev_link(port->dev, team->dev, NULL,
1119 &lag_upper_info, extack);
1120 if (err)
1121 return err;
1122 port->dev->priv_flags |= IFF_TEAM_PORT;
1123 return 0;
1124}
1125
1126static void team_upper_dev_unlink(struct team *team, struct team_port *port)
1127{
1128 netdev_upper_dev_unlink(port->dev, team->dev);
1129 port->dev->priv_flags &= ~IFF_TEAM_PORT;
1130}
1131
1132static void __team_port_change_port_added(struct team_port *port, bool linkup);
1133static int team_dev_type_check_change(struct net_device *dev,
1134 struct net_device *port_dev);
1135
1136static int team_port_add(struct team *team, struct net_device *port_dev,
1137 struct netlink_ext_ack *extack)
1138{
1139 struct net_device *dev = team->dev;
1140 struct team_port *port;
1141 char *portname = port_dev->name;
1142 int err;
1143
1144 if (port_dev->flags & IFF_LOOPBACK) {
1145 NL_SET_ERR_MSG(extack, "Loopback device can't be added as a team port");
1146 netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n",
1147 portname);
1148 return -EINVAL;
1149 }
1150
1151 if (netif_is_team_port(port_dev)) {
1152 NL_SET_ERR_MSG(extack, "Device is already a port of a team device");
1153 netdev_err(dev, "Device %s is already a port "
1154 "of a team device\n", portname);
1155 return -EBUSY;
1156 }
1157
1158 if (dev == port_dev) {
1159 NL_SET_ERR_MSG(extack, "Cannot enslave team device to itself");
1160 netdev_err(dev, "Cannot enslave team device to itself\n");
1161 return -EINVAL;
1162 }
1163
1164 if (netdev_has_upper_dev(dev, port_dev)) {
1165 NL_SET_ERR_MSG(extack, "Device is already an upper device of the team interface");
1166 netdev_err(dev, "Device %s is already an upper device of the team interface\n",
1167 portname);
1168 return -EBUSY;
1169 }
1170
1171 if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
1172 vlan_uses_dev(dev)) {
1173 NL_SET_ERR_MSG(extack, "Device is VLAN challenged and team device has VLAN set up");
1174 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
1175 portname);
1176 return -EPERM;
1177 }
1178
1179 err = team_dev_type_check_change(dev, port_dev);
1180 if (err)
1181 return err;
1182
1183 if (port_dev->flags & IFF_UP) {
1184 NL_SET_ERR_MSG(extack, "Device is up. Set it down before adding it as a team port");
1185 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
1186 portname);
1187 return -EBUSY;
1188 }
1189
1190 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size,
1191 GFP_KERNEL);
1192 if (!port)
1193 return -ENOMEM;
1194
1195 port->dev = port_dev;
1196 port->team = team;
1197 INIT_LIST_HEAD(&port->qom_list);
1198
1199 port->orig.mtu = port_dev->mtu;
1200 err = dev_set_mtu(port_dev, dev->mtu);
1201 if (err) {
1202 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
1203 goto err_set_mtu;
1204 }
1205
1206 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len);
1207
1208 err = team_port_enter(team, port);
1209 if (err) {
1210 netdev_err(dev, "Device %s failed to enter team mode\n",
1211 portname);
1212 goto err_port_enter;
1213 }
1214
1215 err = dev_open(port_dev, extack);
1216 if (err) {
1217 netdev_dbg(dev, "Device %s opening failed\n",
1218 portname);
1219 goto err_dev_open;
1220 }
1221
1222 err = vlan_vids_add_by_dev(port_dev, dev);
1223 if (err) {
1224 netdev_err(dev, "Failed to add vlan ids to device %s\n",
1225 portname);
1226 goto err_vids_add;
1227 }
1228
1229 err = team_port_enable_netpoll(port);
1230 if (err) {
1231 netdev_err(dev, "Failed to enable netpoll on device %s\n",
1232 portname);
1233 goto err_enable_netpoll;
1234 }
1235
1236 if (!(dev->features & NETIF_F_LRO))
1237 dev_disable_lro(port_dev);
1238
1239 err = netdev_rx_handler_register(port_dev, team_handle_frame,
1240 port);
1241 if (err) {
1242 netdev_err(dev, "Device %s failed to register rx_handler\n",
1243 portname);
1244 goto err_handler_register;
1245 }
1246
1247 err = team_upper_dev_link(team, port, extack);
1248 if (err) {
1249 netdev_err(dev, "Device %s failed to set upper link\n",
1250 portname);
1251 goto err_set_upper_link;
1252 }
1253
1254 err = __team_option_inst_add_port(team, port);
1255 if (err) {
1256 netdev_err(dev, "Device %s failed to add per-port options\n",
1257 portname);
1258 goto err_option_port_add;
1259 }
1260
1261 /* set promiscuity level to new slave */
1262 if (dev->flags & IFF_PROMISC) {
1263 err = dev_set_promiscuity(port_dev, 1);
1264 if (err)
1265 goto err_set_slave_promisc;
1266 }
1267
1268 /* set allmulti level to new slave */
1269 if (dev->flags & IFF_ALLMULTI) {
1270 err = dev_set_allmulti(port_dev, 1);
1271 if (err) {
1272 if (dev->flags & IFF_PROMISC)
1273 dev_set_promiscuity(port_dev, -1);
1274 goto err_set_slave_promisc;
1275 }
1276 }
1277
1278 if (dev->flags & IFF_UP) {
1279 netif_addr_lock_bh(dev);
1280 dev_uc_sync_multiple(port_dev, dev);
1281 dev_mc_sync_multiple(port_dev, dev);
1282 netif_addr_unlock_bh(dev);
1283 }
1284
1285 port->index = -1;
1286 list_add_tail_rcu(&port->list, &team->port_list);
1287 team_port_enable(team, port);
1288 __team_compute_features(team);
1289 __team_port_change_port_added(port, !!netif_oper_up(port_dev));
1290 __team_options_change_check(team);
1291
1292 netdev_info(dev, "Port device %s added\n", portname);
1293
1294 return 0;
1295
1296err_set_slave_promisc:
1297 __team_option_inst_del_port(team, port);
1298
1299err_option_port_add:
1300 team_upper_dev_unlink(team, port);
1301
1302err_set_upper_link:
1303 netdev_rx_handler_unregister(port_dev);
1304
1305err_handler_register:
1306 team_port_disable_netpoll(port);
1307
1308err_enable_netpoll:
1309 vlan_vids_del_by_dev(port_dev, dev);
1310
1311err_vids_add:
1312 dev_close(port_dev);
1313
1314err_dev_open:
1315 team_port_leave(team, port);
1316 team_port_set_orig_dev_addr(port);
1317
1318err_port_enter:
1319 dev_set_mtu(port_dev, port->orig.mtu);
1320
1321err_set_mtu:
1322 kfree(port);
1323
1324 return err;
1325}
1326
1327static void __team_port_change_port_removed(struct team_port *port);
1328
1329static int team_port_del(struct team *team, struct net_device *port_dev)
1330{
1331 struct net_device *dev = team->dev;
1332 struct team_port *port;
1333 char *portname = port_dev->name;
1334
1335 port = team_port_get_rtnl(port_dev);
1336 if (!port || !team_port_find(team, port)) {
1337 netdev_err(dev, "Device %s does not act as a port of this team\n",
1338 portname);
1339 return -ENOENT;
1340 }
1341
1342 team_port_disable(team, port);
1343 list_del_rcu(&port->list);
1344
1345 if (dev->flags & IFF_PROMISC)
1346 dev_set_promiscuity(port_dev, -1);
1347 if (dev->flags & IFF_ALLMULTI)
1348 dev_set_allmulti(port_dev, -1);
1349
1350 team_upper_dev_unlink(team, port);
1351 netdev_rx_handler_unregister(port_dev);
1352 team_port_disable_netpoll(port);
1353 vlan_vids_del_by_dev(port_dev, dev);
1354 if (dev->flags & IFF_UP) {
1355 dev_uc_unsync(port_dev, dev);
1356 dev_mc_unsync(port_dev, dev);
1357 }
1358 dev_close(port_dev);
1359 team_port_leave(team, port);
1360
1361 __team_option_inst_mark_removed_port(team, port);
1362 __team_options_change_check(team);
1363 __team_option_inst_del_port(team, port);
1364 __team_port_change_port_removed(port);
1365
1366 team_port_set_orig_dev_addr(port);
1367 dev_set_mtu(port_dev, port->orig.mtu);
1368 kfree_rcu(port, rcu);
1369 netdev_info(dev, "Port device %s removed\n", portname);
1370 __team_compute_features(team);
1371
1372 return 0;
1373}
1374
1375
1376/*****************
1377 * Net device ops
1378 *****************/
1379
1380static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
1381{
1382 ctx->data.str_val = team->mode->kind;
1383 return 0;
1384}
1385
1386static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
1387{
1388 return team_change_mode(team, ctx->data.str_val);
1389}
1390
1391static int team_notify_peers_count_get(struct team *team,
1392 struct team_gsetter_ctx *ctx)
1393{
1394 ctx->data.u32_val = team->notify_peers.count;
1395 return 0;
1396}
1397
1398static int team_notify_peers_count_set(struct team *team,
1399 struct team_gsetter_ctx *ctx)
1400{
1401 team->notify_peers.count = ctx->data.u32_val;
1402 return 0;
1403}
1404
1405static int team_notify_peers_interval_get(struct team *team,
1406 struct team_gsetter_ctx *ctx)
1407{
1408 ctx->data.u32_val = team->notify_peers.interval;
1409 return 0;
1410}
1411
1412static int team_notify_peers_interval_set(struct team *team,
1413 struct team_gsetter_ctx *ctx)
1414{
1415 team->notify_peers.interval = ctx->data.u32_val;
1416 return 0;
1417}
1418
1419static int team_mcast_rejoin_count_get(struct team *team,
1420 struct team_gsetter_ctx *ctx)
1421{
1422 ctx->data.u32_val = team->mcast_rejoin.count;
1423 return 0;
1424}
1425
1426static int team_mcast_rejoin_count_set(struct team *team,
1427 struct team_gsetter_ctx *ctx)
1428{
1429 team->mcast_rejoin.count = ctx->data.u32_val;
1430 return 0;
1431}
1432
1433static int team_mcast_rejoin_interval_get(struct team *team,
1434 struct team_gsetter_ctx *ctx)
1435{
1436 ctx->data.u32_val = team->mcast_rejoin.interval;
1437 return 0;
1438}
1439
1440static int team_mcast_rejoin_interval_set(struct team *team,
1441 struct team_gsetter_ctx *ctx)
1442{
1443 team->mcast_rejoin.interval = ctx->data.u32_val;
1444 return 0;
1445}
1446
1447static int team_port_en_option_get(struct team *team,
1448 struct team_gsetter_ctx *ctx)
1449{
1450 struct team_port *port = ctx->info->port;
1451
1452 ctx->data.bool_val = team_port_enabled(port);
1453 return 0;
1454}
1455
1456static int team_port_en_option_set(struct team *team,
1457 struct team_gsetter_ctx *ctx)
1458{
1459 struct team_port *port = ctx->info->port;
1460
1461 if (ctx->data.bool_val)
1462 team_port_enable(team, port);
1463 else
1464 team_port_disable(team, port);
1465 return 0;
1466}
1467
1468static int team_user_linkup_option_get(struct team *team,
1469 struct team_gsetter_ctx *ctx)
1470{
1471 struct team_port *port = ctx->info->port;
1472
1473 ctx->data.bool_val = port->user.linkup;
1474 return 0;
1475}
1476
1477static void __team_carrier_check(struct team *team);
1478
1479static int team_user_linkup_option_set(struct team *team,
1480 struct team_gsetter_ctx *ctx)
1481{
1482 struct team_port *port = ctx->info->port;
1483
1484 port->user.linkup = ctx->data.bool_val;
1485 team_refresh_port_linkup(port);
1486 __team_carrier_check(port->team);
1487 return 0;
1488}
1489
1490static int team_user_linkup_en_option_get(struct team *team,
1491 struct team_gsetter_ctx *ctx)
1492{
1493 struct team_port *port = ctx->info->port;
1494
1495 ctx->data.bool_val = port->user.linkup_enabled;
1496 return 0;
1497}
1498
1499static int team_user_linkup_en_option_set(struct team *team,
1500 struct team_gsetter_ctx *ctx)
1501{
1502 struct team_port *port = ctx->info->port;
1503
1504 port->user.linkup_enabled = ctx->data.bool_val;
1505 team_refresh_port_linkup(port);
1506 __team_carrier_check(port->team);
1507 return 0;
1508}
1509
1510static int team_priority_option_get(struct team *team,
1511 struct team_gsetter_ctx *ctx)
1512{
1513 struct team_port *port = ctx->info->port;
1514
1515 ctx->data.s32_val = port->priority;
1516 return 0;
1517}
1518
1519static int team_priority_option_set(struct team *team,
1520 struct team_gsetter_ctx *ctx)
1521{
1522 struct team_port *port = ctx->info->port;
1523 s32 priority = ctx->data.s32_val;
1524
1525 if (port->priority == priority)
1526 return 0;
1527 port->priority = priority;
1528 team_queue_override_port_prio_changed(team, port);
1529 return 0;
1530}
1531
1532static int team_queue_id_option_get(struct team *team,
1533 struct team_gsetter_ctx *ctx)
1534{
1535 struct team_port *port = ctx->info->port;
1536
1537 ctx->data.u32_val = port->queue_id;
1538 return 0;
1539}
1540
1541static int team_queue_id_option_set(struct team *team,
1542 struct team_gsetter_ctx *ctx)
1543{
1544 struct team_port *port = ctx->info->port;
1545 u16 new_queue_id = ctx->data.u32_val;
1546
1547 if (port->queue_id == new_queue_id)
1548 return 0;
1549 if (new_queue_id >= team->dev->real_num_tx_queues)
1550 return -EINVAL;
1551 team_queue_override_port_change_queue_id(team, port, new_queue_id);
1552 return 0;
1553}
1554
1555static const struct team_option team_options[] = {
1556 {
1557 .name = "mode",
1558 .type = TEAM_OPTION_TYPE_STRING,
1559 .getter = team_mode_option_get,
1560 .setter = team_mode_option_set,
1561 },
1562 {
1563 .name = "notify_peers_count",
1564 .type = TEAM_OPTION_TYPE_U32,
1565 .getter = team_notify_peers_count_get,
1566 .setter = team_notify_peers_count_set,
1567 },
1568 {
1569 .name = "notify_peers_interval",
1570 .type = TEAM_OPTION_TYPE_U32,
1571 .getter = team_notify_peers_interval_get,
1572 .setter = team_notify_peers_interval_set,
1573 },
1574 {
1575 .name = "mcast_rejoin_count",
1576 .type = TEAM_OPTION_TYPE_U32,
1577 .getter = team_mcast_rejoin_count_get,
1578 .setter = team_mcast_rejoin_count_set,
1579 },
1580 {
1581 .name = "mcast_rejoin_interval",
1582 .type = TEAM_OPTION_TYPE_U32,
1583 .getter = team_mcast_rejoin_interval_get,
1584 .setter = team_mcast_rejoin_interval_set,
1585 },
1586 {
1587 .name = "enabled",
1588 .type = TEAM_OPTION_TYPE_BOOL,
1589 .per_port = true,
1590 .getter = team_port_en_option_get,
1591 .setter = team_port_en_option_set,
1592 },
1593 {
1594 .name = "user_linkup",
1595 .type = TEAM_OPTION_TYPE_BOOL,
1596 .per_port = true,
1597 .getter = team_user_linkup_option_get,
1598 .setter = team_user_linkup_option_set,
1599 },
1600 {
1601 .name = "user_linkup_enabled",
1602 .type = TEAM_OPTION_TYPE_BOOL,
1603 .per_port = true,
1604 .getter = team_user_linkup_en_option_get,
1605 .setter = team_user_linkup_en_option_set,
1606 },
1607 {
1608 .name = "priority",
1609 .type = TEAM_OPTION_TYPE_S32,
1610 .per_port = true,
1611 .getter = team_priority_option_get,
1612 .setter = team_priority_option_set,
1613 },
1614 {
1615 .name = "queue_id",
1616 .type = TEAM_OPTION_TYPE_U32,
1617 .per_port = true,
1618 .getter = team_queue_id_option_get,
1619 .setter = team_queue_id_option_set,
1620 },
1621};
1622
1623
1624static int team_init(struct net_device *dev)
1625{
1626 struct team *team = netdev_priv(dev);
1627 int i;
1628 int err;
1629
1630 team->dev = dev;
1631 team_set_no_mode(team);
1632
1633 team->pcpu_stats = netdev_alloc_pcpu_stats(struct team_pcpu_stats);
1634 if (!team->pcpu_stats)
1635 return -ENOMEM;
1636
1637 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
1638 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
1639 INIT_LIST_HEAD(&team->port_list);
1640 err = team_queue_override_init(team);
1641 if (err)
1642 goto err_team_queue_override_init;
1643
1644 team_adjust_ops(team);
1645
1646 INIT_LIST_HEAD(&team->option_list);
1647 INIT_LIST_HEAD(&team->option_inst_list);
1648
1649 team_notify_peers_init(team);
1650 team_mcast_rejoin_init(team);
1651
1652 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1653 if (err)
1654 goto err_options_register;
1655 netif_carrier_off(dev);
1656
1657 lockdep_register_key(&team->team_lock_key);
1658 __mutex_init(&team->lock, "team->team_lock_key", &team->team_lock_key);
1659 netdev_lockdep_set_classes(dev);
1660
1661 return 0;
1662
1663err_options_register:
1664 team_mcast_rejoin_fini(team);
1665 team_notify_peers_fini(team);
1666 team_queue_override_fini(team);
1667err_team_queue_override_init:
1668 free_percpu(team->pcpu_stats);
1669
1670 return err;
1671}
1672
1673static void team_uninit(struct net_device *dev)
1674{
1675 struct team *team = netdev_priv(dev);
1676 struct team_port *port;
1677 struct team_port *tmp;
1678
1679 mutex_lock(&team->lock);
1680 list_for_each_entry_safe(port, tmp, &team->port_list, list)
1681 team_port_del(team, port->dev);
1682
1683 __team_change_mode(team, NULL); /* cleanup */
1684 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
1685 team_mcast_rejoin_fini(team);
1686 team_notify_peers_fini(team);
1687 team_queue_override_fini(team);
1688 mutex_unlock(&team->lock);
1689 netdev_change_features(dev);
1690 lockdep_unregister_key(&team->team_lock_key);
1691}
1692
1693static void team_destructor(struct net_device *dev)
1694{
1695 struct team *team = netdev_priv(dev);
1696
1697 free_percpu(team->pcpu_stats);
1698}
1699
1700static int team_open(struct net_device *dev)
1701{
1702 return 0;
1703}
1704
1705static int team_close(struct net_device *dev)
1706{
1707 struct team *team = netdev_priv(dev);
1708 struct team_port *port;
1709
1710 list_for_each_entry(port, &team->port_list, list) {
1711 dev_uc_unsync(port->dev, dev);
1712 dev_mc_unsync(port->dev, dev);
1713 }
1714
1715 return 0;
1716}
1717
1718/*
1719 * note: already called with rcu_read_lock
1720 */
1721static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1722{
1723 struct team *team = netdev_priv(dev);
1724 bool tx_success;
1725 unsigned int len = skb->len;
1726
1727 tx_success = team_queue_override_transmit(team, skb);
1728 if (!tx_success)
1729 tx_success = team->ops.transmit(team, skb);
1730 if (tx_success) {
1731 struct team_pcpu_stats *pcpu_stats;
1732
1733 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1734 u64_stats_update_begin(&pcpu_stats->syncp);
1735 u64_stats_inc(&pcpu_stats->tx_packets);
1736 u64_stats_add(&pcpu_stats->tx_bytes, len);
1737 u64_stats_update_end(&pcpu_stats->syncp);
1738 } else {
1739 this_cpu_inc(team->pcpu_stats->tx_dropped);
1740 }
1741
1742 return NETDEV_TX_OK;
1743}
1744
1745static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb,
1746 struct net_device *sb_dev)
1747{
1748 /*
1749 * This helper function exists to help dev_pick_tx get the correct
1750 * destination queue. Using a helper function skips a call to
1751 * skb_tx_hash and will put the skbs in the queue we expect on their
1752 * way down to the team driver.
1753 */
1754 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1755
1756 /*
1757 * Save the original txq to restore before passing to the driver
1758 */
1759 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1760
1761 if (unlikely(txq >= dev->real_num_tx_queues)) {
1762 do {
1763 txq -= dev->real_num_tx_queues;
1764 } while (txq >= dev->real_num_tx_queues);
1765 }
1766 return txq;
1767}
1768
1769static void team_change_rx_flags(struct net_device *dev, int change)
1770{
1771 struct team *team = netdev_priv(dev);
1772 struct team_port *port;
1773 int inc;
1774
1775 rcu_read_lock();
1776 list_for_each_entry_rcu(port, &team->port_list, list) {
1777 if (change & IFF_PROMISC) {
1778 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1779 dev_set_promiscuity(port->dev, inc);
1780 }
1781 if (change & IFF_ALLMULTI) {
1782 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1783 dev_set_allmulti(port->dev, inc);
1784 }
1785 }
1786 rcu_read_unlock();
1787}
1788
1789static void team_set_rx_mode(struct net_device *dev)
1790{
1791 struct team *team = netdev_priv(dev);
1792 struct team_port *port;
1793
1794 rcu_read_lock();
1795 list_for_each_entry_rcu(port, &team->port_list, list) {
1796 dev_uc_sync_multiple(port->dev, dev);
1797 dev_mc_sync_multiple(port->dev, dev);
1798 }
1799 rcu_read_unlock();
1800}
1801
1802static int team_set_mac_address(struct net_device *dev, void *p)
1803{
1804 struct sockaddr *addr = p;
1805 struct team *team = netdev_priv(dev);
1806 struct team_port *port;
1807
1808 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data))
1809 return -EADDRNOTAVAIL;
1810 dev_addr_set(dev, addr->sa_data);
1811 mutex_lock(&team->lock);
1812 list_for_each_entry(port, &team->port_list, list)
1813 if (team->ops.port_change_dev_addr)
1814 team->ops.port_change_dev_addr(team, port);
1815 mutex_unlock(&team->lock);
1816 return 0;
1817}
1818
1819static int team_change_mtu(struct net_device *dev, int new_mtu)
1820{
1821 struct team *team = netdev_priv(dev);
1822 struct team_port *port;
1823 int err;
1824
1825 /*
1826 * Alhough this is reader, it's guarded by team lock. It's not possible
1827 * to traverse list in reverse under rcu_read_lock
1828 */
1829 mutex_lock(&team->lock);
1830 team->port_mtu_change_allowed = true;
1831 list_for_each_entry(port, &team->port_list, list) {
1832 err = dev_set_mtu(port->dev, new_mtu);
1833 if (err) {
1834 netdev_err(dev, "Device %s failed to change mtu",
1835 port->dev->name);
1836 goto unwind;
1837 }
1838 }
1839 team->port_mtu_change_allowed = false;
1840 mutex_unlock(&team->lock);
1841
1842 dev->mtu = new_mtu;
1843
1844 return 0;
1845
1846unwind:
1847 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1848 dev_set_mtu(port->dev, dev->mtu);
1849 team->port_mtu_change_allowed = false;
1850 mutex_unlock(&team->lock);
1851
1852 return err;
1853}
1854
1855static void
1856team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1857{
1858 struct team *team = netdev_priv(dev);
1859 struct team_pcpu_stats *p;
1860 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1861 u32 rx_dropped = 0, tx_dropped = 0, rx_nohandler = 0;
1862 unsigned int start;
1863 int i;
1864
1865 for_each_possible_cpu(i) {
1866 p = per_cpu_ptr(team->pcpu_stats, i);
1867 do {
1868 start = u64_stats_fetch_begin(&p->syncp);
1869 rx_packets = u64_stats_read(&p->rx_packets);
1870 rx_bytes = u64_stats_read(&p->rx_bytes);
1871 rx_multicast = u64_stats_read(&p->rx_multicast);
1872 tx_packets = u64_stats_read(&p->tx_packets);
1873 tx_bytes = u64_stats_read(&p->tx_bytes);
1874 } while (u64_stats_fetch_retry(&p->syncp, start));
1875
1876 stats->rx_packets += rx_packets;
1877 stats->rx_bytes += rx_bytes;
1878 stats->multicast += rx_multicast;
1879 stats->tx_packets += tx_packets;
1880 stats->tx_bytes += tx_bytes;
1881 /*
1882 * rx_dropped, tx_dropped & rx_nohandler are u32,
1883 * updated without syncp protection.
1884 */
1885 rx_dropped += READ_ONCE(p->rx_dropped);
1886 tx_dropped += READ_ONCE(p->tx_dropped);
1887 rx_nohandler += READ_ONCE(p->rx_nohandler);
1888 }
1889 stats->rx_dropped = rx_dropped;
1890 stats->tx_dropped = tx_dropped;
1891 stats->rx_nohandler = rx_nohandler;
1892}
1893
1894static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
1895{
1896 struct team *team = netdev_priv(dev);
1897 struct team_port *port;
1898 int err;
1899
1900 /*
1901 * Alhough this is reader, it's guarded by team lock. It's not possible
1902 * to traverse list in reverse under rcu_read_lock
1903 */
1904 mutex_lock(&team->lock);
1905 list_for_each_entry(port, &team->port_list, list) {
1906 err = vlan_vid_add(port->dev, proto, vid);
1907 if (err)
1908 goto unwind;
1909 }
1910 mutex_unlock(&team->lock);
1911
1912 return 0;
1913
1914unwind:
1915 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1916 vlan_vid_del(port->dev, proto, vid);
1917 mutex_unlock(&team->lock);
1918
1919 return err;
1920}
1921
1922static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
1923{
1924 struct team *team = netdev_priv(dev);
1925 struct team_port *port;
1926
1927 mutex_lock(&team->lock);
1928 list_for_each_entry(port, &team->port_list, list)
1929 vlan_vid_del(port->dev, proto, vid);
1930 mutex_unlock(&team->lock);
1931
1932 return 0;
1933}
1934
1935#ifdef CONFIG_NET_POLL_CONTROLLER
1936static void team_poll_controller(struct net_device *dev)
1937{
1938}
1939
1940static void __team_netpoll_cleanup(struct team *team)
1941{
1942 struct team_port *port;
1943
1944 list_for_each_entry(port, &team->port_list, list)
1945 team_port_disable_netpoll(port);
1946}
1947
1948static void team_netpoll_cleanup(struct net_device *dev)
1949{
1950 struct team *team = netdev_priv(dev);
1951
1952 mutex_lock(&team->lock);
1953 __team_netpoll_cleanup(team);
1954 mutex_unlock(&team->lock);
1955}
1956
1957static int team_netpoll_setup(struct net_device *dev,
1958 struct netpoll_info *npifo)
1959{
1960 struct team *team = netdev_priv(dev);
1961 struct team_port *port;
1962 int err = 0;
1963
1964 mutex_lock(&team->lock);
1965 list_for_each_entry(port, &team->port_list, list) {
1966 err = __team_port_enable_netpoll(port);
1967 if (err) {
1968 __team_netpoll_cleanup(team);
1969 break;
1970 }
1971 }
1972 mutex_unlock(&team->lock);
1973 return err;
1974}
1975#endif
1976
1977static int team_add_slave(struct net_device *dev, struct net_device *port_dev,
1978 struct netlink_ext_ack *extack)
1979{
1980 struct team *team = netdev_priv(dev);
1981 int err;
1982
1983 mutex_lock(&team->lock);
1984 err = team_port_add(team, port_dev, extack);
1985 mutex_unlock(&team->lock);
1986
1987 if (!err)
1988 netdev_change_features(dev);
1989
1990 return err;
1991}
1992
1993static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1994{
1995 struct team *team = netdev_priv(dev);
1996 int err;
1997
1998 mutex_lock(&team->lock);
1999 err = team_port_del(team, port_dev);
2000 mutex_unlock(&team->lock);
2001
2002 if (err)
2003 return err;
2004
2005 if (netif_is_team_master(port_dev)) {
2006 lockdep_unregister_key(&team->team_lock_key);
2007 lockdep_register_key(&team->team_lock_key);
2008 lockdep_set_class(&team->lock, &team->team_lock_key);
2009 }
2010 netdev_change_features(dev);
2011
2012 return err;
2013}
2014
2015static netdev_features_t team_fix_features(struct net_device *dev,
2016 netdev_features_t features)
2017{
2018 struct team_port *port;
2019 struct team *team = netdev_priv(dev);
2020 netdev_features_t mask;
2021
2022 mask = features;
2023 features &= ~NETIF_F_ONE_FOR_ALL;
2024 features |= NETIF_F_ALL_FOR_ALL;
2025
2026 rcu_read_lock();
2027 list_for_each_entry_rcu(port, &team->port_list, list) {
2028 features = netdev_increment_features(features,
2029 port->dev->features,
2030 mask);
2031 }
2032 rcu_read_unlock();
2033
2034 features = netdev_add_tso_features(features, mask);
2035
2036 return features;
2037}
2038
2039static int team_change_carrier(struct net_device *dev, bool new_carrier)
2040{
2041 struct team *team = netdev_priv(dev);
2042
2043 team->user_carrier_enabled = true;
2044
2045 if (new_carrier)
2046 netif_carrier_on(dev);
2047 else
2048 netif_carrier_off(dev);
2049 return 0;
2050}
2051
2052static const struct net_device_ops team_netdev_ops = {
2053 .ndo_init = team_init,
2054 .ndo_uninit = team_uninit,
2055 .ndo_open = team_open,
2056 .ndo_stop = team_close,
2057 .ndo_start_xmit = team_xmit,
2058 .ndo_select_queue = team_select_queue,
2059 .ndo_change_rx_flags = team_change_rx_flags,
2060 .ndo_set_rx_mode = team_set_rx_mode,
2061 .ndo_set_mac_address = team_set_mac_address,
2062 .ndo_change_mtu = team_change_mtu,
2063 .ndo_get_stats64 = team_get_stats64,
2064 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
2065 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
2066#ifdef CONFIG_NET_POLL_CONTROLLER
2067 .ndo_poll_controller = team_poll_controller,
2068 .ndo_netpoll_setup = team_netpoll_setup,
2069 .ndo_netpoll_cleanup = team_netpoll_cleanup,
2070#endif
2071 .ndo_add_slave = team_add_slave,
2072 .ndo_del_slave = team_del_slave,
2073 .ndo_fix_features = team_fix_features,
2074 .ndo_change_carrier = team_change_carrier,
2075 .ndo_features_check = passthru_features_check,
2076};
2077
2078/***********************
2079 * ethtool interface
2080 ***********************/
2081
2082static void team_ethtool_get_drvinfo(struct net_device *dev,
2083 struct ethtool_drvinfo *drvinfo)
2084{
2085 strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
2086 strscpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
2087}
2088
2089static int team_ethtool_get_link_ksettings(struct net_device *dev,
2090 struct ethtool_link_ksettings *cmd)
2091{
2092 struct team *team= netdev_priv(dev);
2093 unsigned long speed = 0;
2094 struct team_port *port;
2095
2096 cmd->base.duplex = DUPLEX_UNKNOWN;
2097 cmd->base.port = PORT_OTHER;
2098
2099 rcu_read_lock();
2100 list_for_each_entry_rcu(port, &team->port_list, list) {
2101 if (team_port_txable(port)) {
2102 if (port->state.speed != SPEED_UNKNOWN)
2103 speed += port->state.speed;
2104 if (cmd->base.duplex == DUPLEX_UNKNOWN &&
2105 port->state.duplex != DUPLEX_UNKNOWN)
2106 cmd->base.duplex = port->state.duplex;
2107 }
2108 }
2109 rcu_read_unlock();
2110
2111 cmd->base.speed = speed ? : SPEED_UNKNOWN;
2112
2113 return 0;
2114}
2115
2116static const struct ethtool_ops team_ethtool_ops = {
2117 .get_drvinfo = team_ethtool_get_drvinfo,
2118 .get_link = ethtool_op_get_link,
2119 .get_link_ksettings = team_ethtool_get_link_ksettings,
2120};
2121
2122/***********************
2123 * rt netlink interface
2124 ***********************/
2125
2126static void team_setup_by_port(struct net_device *dev,
2127 struct net_device *port_dev)
2128{
2129 dev->header_ops = port_dev->header_ops;
2130 dev->type = port_dev->type;
2131 dev->hard_header_len = port_dev->hard_header_len;
2132 dev->needed_headroom = port_dev->needed_headroom;
2133 dev->addr_len = port_dev->addr_len;
2134 dev->mtu = port_dev->mtu;
2135 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
2136 eth_hw_addr_inherit(dev, port_dev);
2137}
2138
2139static int team_dev_type_check_change(struct net_device *dev,
2140 struct net_device *port_dev)
2141{
2142 struct team *team = netdev_priv(dev);
2143 char *portname = port_dev->name;
2144 int err;
2145
2146 if (dev->type == port_dev->type)
2147 return 0;
2148 if (!list_empty(&team->port_list)) {
2149 netdev_err(dev, "Device %s is of different type\n", portname);
2150 return -EBUSY;
2151 }
2152 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev);
2153 err = notifier_to_errno(err);
2154 if (err) {
2155 netdev_err(dev, "Refused to change device type\n");
2156 return err;
2157 }
2158 dev_uc_flush(dev);
2159 dev_mc_flush(dev);
2160 team_setup_by_port(dev, port_dev);
2161 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev);
2162 return 0;
2163}
2164
2165static void team_setup(struct net_device *dev)
2166{
2167 ether_setup(dev);
2168 dev->max_mtu = ETH_MAX_MTU;
2169
2170 dev->netdev_ops = &team_netdev_ops;
2171 dev->ethtool_ops = &team_ethtool_ops;
2172 dev->needs_free_netdev = true;
2173 dev->priv_destructor = team_destructor;
2174 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
2175 dev->priv_flags |= IFF_NO_QUEUE;
2176 dev->priv_flags |= IFF_TEAM;
2177
2178 /*
2179 * Indicate we support unicast address filtering. That way core won't
2180 * bring us to promisc mode in case a unicast addr is added.
2181 * Let this up to underlay drivers.
2182 */
2183 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
2184
2185 dev->features |= NETIF_F_LLTX;
2186 dev->features |= NETIF_F_GRO;
2187
2188 /* Don't allow team devices to change network namespaces. */
2189 dev->features |= NETIF_F_NETNS_LOCAL;
2190
2191 dev->hw_features = TEAM_VLAN_FEATURES |
2192 NETIF_F_HW_VLAN_CTAG_RX |
2193 NETIF_F_HW_VLAN_CTAG_FILTER;
2194
2195 dev->hw_features |= NETIF_F_GSO_ENCAP_ALL;
2196 dev->features |= dev->hw_features;
2197 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX;
2198}
2199
2200static int team_newlink(struct net *src_net, struct net_device *dev,
2201 struct nlattr *tb[], struct nlattr *data[],
2202 struct netlink_ext_ack *extack)
2203{
2204 if (tb[IFLA_ADDRESS] == NULL)
2205 eth_hw_addr_random(dev);
2206
2207 return register_netdevice(dev);
2208}
2209
2210static int team_validate(struct nlattr *tb[], struct nlattr *data[],
2211 struct netlink_ext_ack *extack)
2212{
2213 if (tb[IFLA_ADDRESS]) {
2214 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
2215 return -EINVAL;
2216 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
2217 return -EADDRNOTAVAIL;
2218 }
2219 return 0;
2220}
2221
2222static unsigned int team_get_num_tx_queues(void)
2223{
2224 return TEAM_DEFAULT_NUM_TX_QUEUES;
2225}
2226
2227static unsigned int team_get_num_rx_queues(void)
2228{
2229 return TEAM_DEFAULT_NUM_RX_QUEUES;
2230}
2231
2232static struct rtnl_link_ops team_link_ops __read_mostly = {
2233 .kind = DRV_NAME,
2234 .priv_size = sizeof(struct team),
2235 .setup = team_setup,
2236 .newlink = team_newlink,
2237 .validate = team_validate,
2238 .get_num_tx_queues = team_get_num_tx_queues,
2239 .get_num_rx_queues = team_get_num_rx_queues,
2240};
2241
2242
2243/***********************************
2244 * Generic netlink custom interface
2245 ***********************************/
2246
2247static struct genl_family team_nl_family;
2248
2249static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
2250 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
2251 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
2252 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
2253 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
2254};
2255
2256static const struct nla_policy
2257team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
2258 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
2259 [TEAM_ATTR_OPTION_NAME] = {
2260 .type = NLA_STRING,
2261 .len = TEAM_STRING_MAX_LEN,
2262 },
2263 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
2264 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
2265 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
2266 [TEAM_ATTR_OPTION_PORT_IFINDEX] = { .type = NLA_U32 },
2267 [TEAM_ATTR_OPTION_ARRAY_INDEX] = { .type = NLA_U32 },
2268};
2269
2270static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
2271{
2272 struct sk_buff *msg;
2273 void *hdr;
2274 int err;
2275
2276 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2277 if (!msg)
2278 return -ENOMEM;
2279
2280 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
2281 &team_nl_family, 0, TEAM_CMD_NOOP);
2282 if (!hdr) {
2283 err = -EMSGSIZE;
2284 goto err_msg_put;
2285 }
2286
2287 genlmsg_end(msg, hdr);
2288
2289 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid);
2290
2291err_msg_put:
2292 nlmsg_free(msg);
2293
2294 return err;
2295}
2296
2297/*
2298 * Netlink cmd functions should be locked by following two functions.
2299 * Since dev gets held here, that ensures dev won't disappear in between.
2300 */
2301static struct team *team_nl_team_get(struct genl_info *info)
2302{
2303 struct net *net = genl_info_net(info);
2304 int ifindex;
2305 struct net_device *dev;
2306 struct team *team;
2307
2308 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
2309 return NULL;
2310
2311 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
2312 dev = dev_get_by_index(net, ifindex);
2313 if (!dev || dev->netdev_ops != &team_netdev_ops) {
2314 if (dev)
2315 dev_put(dev);
2316 return NULL;
2317 }
2318
2319 team = netdev_priv(dev);
2320 mutex_lock(&team->lock);
2321 return team;
2322}
2323
2324static void team_nl_team_put(struct team *team)
2325{
2326 mutex_unlock(&team->lock);
2327 dev_put(team->dev);
2328}
2329
2330typedef int team_nl_send_func_t(struct sk_buff *skb,
2331 struct team *team, u32 portid);
2332
2333static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid)
2334{
2335 return genlmsg_unicast(dev_net(team->dev), skb, portid);
2336}
2337
2338static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
2339 struct team_option_inst *opt_inst)
2340{
2341 struct nlattr *option_item;
2342 struct team_option *option = opt_inst->option;
2343 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
2344 struct team_gsetter_ctx ctx;
2345 int err;
2346
2347 ctx.info = opt_inst_info;
2348 err = team_option_get(team, opt_inst, &ctx);
2349 if (err)
2350 return err;
2351
2352 option_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_OPTION);
2353 if (!option_item)
2354 return -EMSGSIZE;
2355
2356 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
2357 goto nest_cancel;
2358 if (opt_inst_info->port &&
2359 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
2360 opt_inst_info->port->dev->ifindex))
2361 goto nest_cancel;
2362 if (opt_inst->option->array_size &&
2363 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
2364 opt_inst_info->array_index))
2365 goto nest_cancel;
2366
2367 switch (option->type) {
2368 case TEAM_OPTION_TYPE_U32:
2369 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
2370 goto nest_cancel;
2371 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
2372 goto nest_cancel;
2373 break;
2374 case TEAM_OPTION_TYPE_STRING:
2375 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
2376 goto nest_cancel;
2377 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
2378 ctx.data.str_val))
2379 goto nest_cancel;
2380 break;
2381 case TEAM_OPTION_TYPE_BINARY:
2382 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
2383 goto nest_cancel;
2384 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
2385 ctx.data.bin_val.ptr))
2386 goto nest_cancel;
2387 break;
2388 case TEAM_OPTION_TYPE_BOOL:
2389 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
2390 goto nest_cancel;
2391 if (ctx.data.bool_val &&
2392 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
2393 goto nest_cancel;
2394 break;
2395 case TEAM_OPTION_TYPE_S32:
2396 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32))
2397 goto nest_cancel;
2398 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val))
2399 goto nest_cancel;
2400 break;
2401 default:
2402 BUG();
2403 }
2404 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
2405 goto nest_cancel;
2406 if (opt_inst->changed) {
2407 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
2408 goto nest_cancel;
2409 opt_inst->changed = false;
2410 }
2411 nla_nest_end(skb, option_item);
2412 return 0;
2413
2414nest_cancel:
2415 nla_nest_cancel(skb, option_item);
2416 return -EMSGSIZE;
2417}
2418
2419static int __send_and_alloc_skb(struct sk_buff **pskb,
2420 struct team *team, u32 portid,
2421 team_nl_send_func_t *send_func)
2422{
2423 int err;
2424
2425 if (*pskb) {
2426 err = send_func(*pskb, team, portid);
2427 if (err)
2428 return err;
2429 }
2430 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2431 if (!*pskb)
2432 return -ENOMEM;
2433 return 0;
2434}
2435
2436static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
2437 int flags, team_nl_send_func_t *send_func,
2438 struct list_head *sel_opt_inst_list)
2439{
2440 struct nlattr *option_list;
2441 struct nlmsghdr *nlh;
2442 void *hdr;
2443 struct team_option_inst *opt_inst;
2444 int err;
2445 struct sk_buff *skb = NULL;
2446 bool incomplete;
2447 int i;
2448
2449 opt_inst = list_first_entry(sel_opt_inst_list,
2450 struct team_option_inst, tmp_list);
2451
2452start_again:
2453 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2454 if (err)
2455 return err;
2456
2457 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2458 TEAM_CMD_OPTIONS_GET);
2459 if (!hdr) {
2460 nlmsg_free(skb);
2461 return -EMSGSIZE;
2462 }
2463
2464 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2465 goto nla_put_failure;
2466 option_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_OPTION);
2467 if (!option_list)
2468 goto nla_put_failure;
2469
2470 i = 0;
2471 incomplete = false;
2472 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
2473 err = team_nl_fill_one_option_get(skb, team, opt_inst);
2474 if (err) {
2475 if (err == -EMSGSIZE) {
2476 if (!i)
2477 goto errout;
2478 incomplete = true;
2479 break;
2480 }
2481 goto errout;
2482 }
2483 i++;
2484 }
2485
2486 nla_nest_end(skb, option_list);
2487 genlmsg_end(skb, hdr);
2488 if (incomplete)
2489 goto start_again;
2490
2491send_done:
2492 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2493 if (!nlh) {
2494 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2495 if (err)
2496 return err;
2497 goto send_done;
2498 }
2499
2500 return send_func(skb, team, portid);
2501
2502nla_put_failure:
2503 err = -EMSGSIZE;
2504errout:
2505 nlmsg_free(skb);
2506 return err;
2507}
2508
2509static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
2510{
2511 struct team *team;
2512 struct team_option_inst *opt_inst;
2513 int err;
2514 LIST_HEAD(sel_opt_inst_list);
2515
2516 team = team_nl_team_get(info);
2517 if (!team)
2518 return -EINVAL;
2519
2520 list_for_each_entry(opt_inst, &team->option_inst_list, list)
2521 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2522 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq,
2523 NLM_F_ACK, team_nl_send_unicast,
2524 &sel_opt_inst_list);
2525
2526 team_nl_team_put(team);
2527
2528 return err;
2529}
2530
2531static int team_nl_send_event_options_get(struct team *team,
2532 struct list_head *sel_opt_inst_list);
2533
2534static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
2535{
2536 struct team *team;
2537 int err = 0;
2538 int i;
2539 struct nlattr *nl_option;
2540
2541 rtnl_lock();
2542
2543 team = team_nl_team_get(info);
2544 if (!team) {
2545 err = -EINVAL;
2546 goto rtnl_unlock;
2547 }
2548
2549 err = -EINVAL;
2550 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
2551 err = -EINVAL;
2552 goto team_put;
2553 }
2554
2555 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
2556 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
2557 struct nlattr *attr;
2558 struct nlattr *attr_data;
2559 LIST_HEAD(opt_inst_list);
2560 enum team_option_type opt_type;
2561 int opt_port_ifindex = 0; /* != 0 for per-port options */
2562 u32 opt_array_index = 0;
2563 bool opt_is_array = false;
2564 struct team_option_inst *opt_inst;
2565 char *opt_name;
2566 bool opt_found = false;
2567
2568 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
2569 err = -EINVAL;
2570 goto team_put;
2571 }
2572 err = nla_parse_nested_deprecated(opt_attrs,
2573 TEAM_ATTR_OPTION_MAX,
2574 nl_option,
2575 team_nl_option_policy,
2576 info->extack);
2577 if (err)
2578 goto team_put;
2579 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
2580 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
2581 err = -EINVAL;
2582 goto team_put;
2583 }
2584 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
2585 case NLA_U32:
2586 opt_type = TEAM_OPTION_TYPE_U32;
2587 break;
2588 case NLA_STRING:
2589 opt_type = TEAM_OPTION_TYPE_STRING;
2590 break;
2591 case NLA_BINARY:
2592 opt_type = TEAM_OPTION_TYPE_BINARY;
2593 break;
2594 case NLA_FLAG:
2595 opt_type = TEAM_OPTION_TYPE_BOOL;
2596 break;
2597 case NLA_S32:
2598 opt_type = TEAM_OPTION_TYPE_S32;
2599 break;
2600 default:
2601 goto team_put;
2602 }
2603
2604 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
2605 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
2606 err = -EINVAL;
2607 goto team_put;
2608 }
2609
2610 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
2611 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
2612 if (attr)
2613 opt_port_ifindex = nla_get_u32(attr);
2614
2615 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
2616 if (attr) {
2617 opt_is_array = true;
2618 opt_array_index = nla_get_u32(attr);
2619 }
2620
2621 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2622 struct team_option *option = opt_inst->option;
2623 struct team_gsetter_ctx ctx;
2624 struct team_option_inst_info *opt_inst_info;
2625 int tmp_ifindex;
2626
2627 opt_inst_info = &opt_inst->info;
2628 tmp_ifindex = opt_inst_info->port ?
2629 opt_inst_info->port->dev->ifindex : 0;
2630 if (option->type != opt_type ||
2631 strcmp(option->name, opt_name) ||
2632 tmp_ifindex != opt_port_ifindex ||
2633 (option->array_size && !opt_is_array) ||
2634 opt_inst_info->array_index != opt_array_index)
2635 continue;
2636 opt_found = true;
2637 ctx.info = opt_inst_info;
2638 switch (opt_type) {
2639 case TEAM_OPTION_TYPE_U32:
2640 ctx.data.u32_val = nla_get_u32(attr_data);
2641 break;
2642 case TEAM_OPTION_TYPE_STRING:
2643 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2644 err = -EINVAL;
2645 goto team_put;
2646 }
2647 ctx.data.str_val = nla_data(attr_data);
2648 break;
2649 case TEAM_OPTION_TYPE_BINARY:
2650 ctx.data.bin_val.len = nla_len(attr_data);
2651 ctx.data.bin_val.ptr = nla_data(attr_data);
2652 break;
2653 case TEAM_OPTION_TYPE_BOOL:
2654 ctx.data.bool_val = attr_data ? true : false;
2655 break;
2656 case TEAM_OPTION_TYPE_S32:
2657 ctx.data.s32_val = nla_get_s32(attr_data);
2658 break;
2659 default:
2660 BUG();
2661 }
2662 err = team_option_set(team, opt_inst, &ctx);
2663 if (err)
2664 goto team_put;
2665 opt_inst->changed = true;
2666 list_add(&opt_inst->tmp_list, &opt_inst_list);
2667 }
2668 if (!opt_found) {
2669 err = -ENOENT;
2670 goto team_put;
2671 }
2672
2673 err = team_nl_send_event_options_get(team, &opt_inst_list);
2674 if (err)
2675 break;
2676 }
2677
2678team_put:
2679 team_nl_team_put(team);
2680rtnl_unlock:
2681 rtnl_unlock();
2682 return err;
2683}
2684
2685static int team_nl_fill_one_port_get(struct sk_buff *skb,
2686 struct team_port *port)
2687{
2688 struct nlattr *port_item;
2689
2690 port_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_PORT);
2691 if (!port_item)
2692 goto nest_cancel;
2693 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2694 goto nest_cancel;
2695 if (port->changed) {
2696 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2697 goto nest_cancel;
2698 port->changed = false;
2699 }
2700 if ((port->removed &&
2701 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2702 (port->state.linkup &&
2703 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2704 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2705 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2706 goto nest_cancel;
2707 nla_nest_end(skb, port_item);
2708 return 0;
2709
2710nest_cancel:
2711 nla_nest_cancel(skb, port_item);
2712 return -EMSGSIZE;
2713}
2714
2715static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,
2716 int flags, team_nl_send_func_t *send_func,
2717 struct team_port *one_port)
2718{
2719 struct nlattr *port_list;
2720 struct nlmsghdr *nlh;
2721 void *hdr;
2722 struct team_port *port;
2723 int err;
2724 struct sk_buff *skb = NULL;
2725 bool incomplete;
2726 int i;
2727
2728 port = list_first_entry_or_null(&team->port_list,
2729 struct team_port, list);
2730
2731start_again:
2732 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2733 if (err)
2734 return err;
2735
2736 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2737 TEAM_CMD_PORT_LIST_GET);
2738 if (!hdr) {
2739 nlmsg_free(skb);
2740 return -EMSGSIZE;
2741 }
2742
2743 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2744 goto nla_put_failure;
2745 port_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_PORT);
2746 if (!port_list)
2747 goto nla_put_failure;
2748
2749 i = 0;
2750 incomplete = false;
2751
2752 /* If one port is selected, called wants to send port list containing
2753 * only this port. Otherwise go through all listed ports and send all
2754 */
2755 if (one_port) {
2756 err = team_nl_fill_one_port_get(skb, one_port);
2757 if (err)
2758 goto errout;
2759 } else if (port) {
2760 list_for_each_entry_from(port, &team->port_list, list) {
2761 err = team_nl_fill_one_port_get(skb, port);
2762 if (err) {
2763 if (err == -EMSGSIZE) {
2764 if (!i)
2765 goto errout;
2766 incomplete = true;
2767 break;
2768 }
2769 goto errout;
2770 }
2771 i++;
2772 }
2773 }
2774
2775 nla_nest_end(skb, port_list);
2776 genlmsg_end(skb, hdr);
2777 if (incomplete)
2778 goto start_again;
2779
2780send_done:
2781 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2782 if (!nlh) {
2783 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2784 if (err)
2785 return err;
2786 goto send_done;
2787 }
2788
2789 return send_func(skb, team, portid);
2790
2791nla_put_failure:
2792 err = -EMSGSIZE;
2793errout:
2794 nlmsg_free(skb);
2795 return err;
2796}
2797
2798static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2799 struct genl_info *info)
2800{
2801 struct team *team;
2802 int err;
2803
2804 team = team_nl_team_get(info);
2805 if (!team)
2806 return -EINVAL;
2807
2808 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq,
2809 NLM_F_ACK, team_nl_send_unicast, NULL);
2810
2811 team_nl_team_put(team);
2812
2813 return err;
2814}
2815
2816static const struct genl_small_ops team_nl_ops[] = {
2817 {
2818 .cmd = TEAM_CMD_NOOP,
2819 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2820 .doit = team_nl_cmd_noop,
2821 },
2822 {
2823 .cmd = TEAM_CMD_OPTIONS_SET,
2824 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2825 .doit = team_nl_cmd_options_set,
2826 .flags = GENL_ADMIN_PERM,
2827 },
2828 {
2829 .cmd = TEAM_CMD_OPTIONS_GET,
2830 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2831 .doit = team_nl_cmd_options_get,
2832 .flags = GENL_ADMIN_PERM,
2833 },
2834 {
2835 .cmd = TEAM_CMD_PORT_LIST_GET,
2836 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2837 .doit = team_nl_cmd_port_list_get,
2838 .flags = GENL_ADMIN_PERM,
2839 },
2840};
2841
2842static const struct genl_multicast_group team_nl_mcgrps[] = {
2843 { .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, },
2844};
2845
2846static struct genl_family team_nl_family __ro_after_init = {
2847 .name = TEAM_GENL_NAME,
2848 .version = TEAM_GENL_VERSION,
2849 .maxattr = TEAM_ATTR_MAX,
2850 .policy = team_nl_policy,
2851 .netnsok = true,
2852 .module = THIS_MODULE,
2853 .small_ops = team_nl_ops,
2854 .n_small_ops = ARRAY_SIZE(team_nl_ops),
2855 .resv_start_op = TEAM_CMD_PORT_LIST_GET + 1,
2856 .mcgrps = team_nl_mcgrps,
2857 .n_mcgrps = ARRAY_SIZE(team_nl_mcgrps),
2858};
2859
2860static int team_nl_send_multicast(struct sk_buff *skb,
2861 struct team *team, u32 portid)
2862{
2863 return genlmsg_multicast_netns(&team_nl_family, dev_net(team->dev),
2864 skb, 0, 0, GFP_KERNEL);
2865}
2866
2867static int team_nl_send_event_options_get(struct team *team,
2868 struct list_head *sel_opt_inst_list)
2869{
2870 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2871 sel_opt_inst_list);
2872}
2873
2874static int team_nl_send_event_port_get(struct team *team,
2875 struct team_port *port)
2876{
2877 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast,
2878 port);
2879}
2880
2881static int __init team_nl_init(void)
2882{
2883 return genl_register_family(&team_nl_family);
2884}
2885
2886static void team_nl_fini(void)
2887{
2888 genl_unregister_family(&team_nl_family);
2889}
2890
2891
2892/******************
2893 * Change checkers
2894 ******************/
2895
2896static void __team_options_change_check(struct team *team)
2897{
2898 int err;
2899 struct team_option_inst *opt_inst;
2900 LIST_HEAD(sel_opt_inst_list);
2901
2902 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2903 if (opt_inst->changed)
2904 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2905 }
2906 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
2907 if (err && err != -ESRCH)
2908 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2909 err);
2910}
2911
2912/* rtnl lock is held */
2913
2914static void __team_port_change_send(struct team_port *port, bool linkup)
2915{
2916 int err;
2917
2918 port->changed = true;
2919 port->state.linkup = linkup;
2920 team_refresh_port_linkup(port);
2921 if (linkup) {
2922 struct ethtool_link_ksettings ecmd;
2923
2924 err = __ethtool_get_link_ksettings(port->dev, &ecmd);
2925 if (!err) {
2926 port->state.speed = ecmd.base.speed;
2927 port->state.duplex = ecmd.base.duplex;
2928 goto send_event;
2929 }
2930 }
2931 port->state.speed = 0;
2932 port->state.duplex = 0;
2933
2934send_event:
2935 err = team_nl_send_event_port_get(port->team, port);
2936 if (err && err != -ESRCH)
2937 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
2938 port->dev->name, err);
2939
2940}
2941
2942static void __team_carrier_check(struct team *team)
2943{
2944 struct team_port *port;
2945 bool team_linkup;
2946
2947 if (team->user_carrier_enabled)
2948 return;
2949
2950 team_linkup = false;
2951 list_for_each_entry(port, &team->port_list, list) {
2952 if (port->linkup) {
2953 team_linkup = true;
2954 break;
2955 }
2956 }
2957
2958 if (team_linkup)
2959 netif_carrier_on(team->dev);
2960 else
2961 netif_carrier_off(team->dev);
2962}
2963
2964static void __team_port_change_check(struct team_port *port, bool linkup)
2965{
2966 if (port->state.linkup != linkup)
2967 __team_port_change_send(port, linkup);
2968 __team_carrier_check(port->team);
2969}
2970
2971static void __team_port_change_port_added(struct team_port *port, bool linkup)
2972{
2973 __team_port_change_send(port, linkup);
2974 __team_carrier_check(port->team);
2975}
2976
2977static void __team_port_change_port_removed(struct team_port *port)
2978{
2979 port->removed = true;
2980 __team_port_change_send(port, false);
2981 __team_carrier_check(port->team);
2982}
2983
2984static void team_port_change_check(struct team_port *port, bool linkup)
2985{
2986 struct team *team = port->team;
2987
2988 mutex_lock(&team->lock);
2989 __team_port_change_check(port, linkup);
2990 mutex_unlock(&team->lock);
2991}
2992
2993
2994/************************************
2995 * Net device notifier event handler
2996 ************************************/
2997
2998static int team_device_event(struct notifier_block *unused,
2999 unsigned long event, void *ptr)
3000{
3001 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
3002 struct team_port *port;
3003
3004 port = team_port_get_rtnl(dev);
3005 if (!port)
3006 return NOTIFY_DONE;
3007
3008 switch (event) {
3009 case NETDEV_UP:
3010 if (netif_oper_up(dev))
3011 team_port_change_check(port, true);
3012 break;
3013 case NETDEV_DOWN:
3014 team_port_change_check(port, false);
3015 break;
3016 case NETDEV_CHANGE:
3017 if (netif_running(port->dev))
3018 team_port_change_check(port,
3019 !!netif_oper_up(port->dev));
3020 break;
3021 case NETDEV_UNREGISTER:
3022 team_del_slave(port->team->dev, dev);
3023 break;
3024 case NETDEV_FEAT_CHANGE:
3025 team_compute_features(port->team);
3026 break;
3027 case NETDEV_PRECHANGEMTU:
3028 /* Forbid to change mtu of underlaying device */
3029 if (!port->team->port_mtu_change_allowed)
3030 return NOTIFY_BAD;
3031 break;
3032 case NETDEV_PRE_TYPE_CHANGE:
3033 /* Forbid to change type of underlaying device */
3034 return NOTIFY_BAD;
3035 case NETDEV_RESEND_IGMP:
3036 /* Propagate to master device */
3037 call_netdevice_notifiers(event, port->team->dev);
3038 break;
3039 }
3040 return NOTIFY_DONE;
3041}
3042
3043static struct notifier_block team_notifier_block __read_mostly = {
3044 .notifier_call = team_device_event,
3045};
3046
3047
3048/***********************
3049 * Module init and exit
3050 ***********************/
3051
3052static int __init team_module_init(void)
3053{
3054 int err;
3055
3056 register_netdevice_notifier(&team_notifier_block);
3057
3058 err = rtnl_link_register(&team_link_ops);
3059 if (err)
3060 goto err_rtnl_reg;
3061
3062 err = team_nl_init();
3063 if (err)
3064 goto err_nl_init;
3065
3066 return 0;
3067
3068err_nl_init:
3069 rtnl_link_unregister(&team_link_ops);
3070
3071err_rtnl_reg:
3072 unregister_netdevice_notifier(&team_notifier_block);
3073
3074 return err;
3075}
3076
3077static void __exit team_module_exit(void)
3078{
3079 team_nl_fini();
3080 rtnl_link_unregister(&team_link_ops);
3081 unregister_netdevice_notifier(&team_notifier_block);
3082}
3083
3084module_init(team_module_init);
3085module_exit(team_module_exit);
3086
3087MODULE_LICENSE("GPL v2");
3088MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
3089MODULE_DESCRIPTION("Ethernet team device driver");
3090MODULE_ALIAS_RTNL_LINK(DRV_NAME);
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/ethtool.h>
8#include <linux/kernel.h>
9#include <linux/types.h>
10#include <linux/module.h>
11#include <linux/init.h>
12#include <linux/slab.h>
13#include <linux/rcupdate.h>
14#include <linux/errno.h>
15#include <linux/ctype.h>
16#include <linux/notifier.h>
17#include <linux/netdevice.h>
18#include <linux/netpoll.h>
19#include <linux/if_vlan.h>
20#include <linux/if_arp.h>
21#include <linux/socket.h>
22#include <linux/etherdevice.h>
23#include <linux/rtnetlink.h>
24#include <net/rtnetlink.h>
25#include <net/genetlink.h>
26#include <net/netlink.h>
27#include <net/sch_generic.h>
28#include <linux/if_team.h>
29
30#define DRV_NAME "team"
31
32
33/**********
34 * Helpers
35 **********/
36
37static 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 */
48static 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
58static 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
63static 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
69int team_modeop_port_enter(struct team *team, struct team_port *port)
70{
71 return team_port_set_team_dev_addr(team, port);
72}
73EXPORT_SYMBOL(team_modeop_port_enter);
74
75void 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}
80EXPORT_SYMBOL(team_modeop_port_change_dev_addr);
81
82static 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
91static 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
107struct 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
116static 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
128static void __team_option_inst_del(struct team_option_inst *opt_inst)
129{
130 list_del(&opt_inst->list);
131 kfree(opt_inst);
132}
133
134static 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
145static 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
152 array_size = option->array_size;
153 if (!array_size)
154 array_size = 1; /* No array but still need one instance */
155
156 for (i = 0; i < array_size; i++) {
157 opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL);
158 if (!opt_inst)
159 return -ENOMEM;
160 opt_inst->option = option;
161 opt_inst->info.port = port;
162 opt_inst->info.array_index = i;
163 opt_inst->changed = true;
164 opt_inst->removed = false;
165 list_add_tail(&opt_inst->list, &team->option_inst_list);
166 if (option->init)
167 option->init(team, &opt_inst->info);
168
169 }
170 return 0;
171}
172
173static int __team_option_inst_add_option(struct team *team,
174 struct team_option *option)
175{
176 int err;
177
178 if (!option->per_port) {
179 err = __team_option_inst_add(team, option, NULL);
180 if (err)
181 goto inst_del_option;
182 }
183 return 0;
184
185inst_del_option:
186 __team_option_inst_del_option(team, option);
187 return err;
188}
189
190static void __team_option_inst_mark_removed_option(struct team *team,
191 struct team_option *option)
192{
193 struct team_option_inst *opt_inst;
194
195 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
196 if (opt_inst->option == option) {
197 opt_inst->changed = true;
198 opt_inst->removed = true;
199 }
200 }
201}
202
203static void __team_option_inst_del_port(struct team *team,
204 struct team_port *port)
205{
206 struct team_option_inst *opt_inst, *tmp;
207
208 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
209 if (opt_inst->option->per_port &&
210 opt_inst->info.port == port)
211 __team_option_inst_del(opt_inst);
212 }
213}
214
215static int __team_option_inst_add_port(struct team *team,
216 struct team_port *port)
217{
218 struct team_option *option;
219 int err;
220
221 list_for_each_entry(option, &team->option_list, list) {
222 if (!option->per_port)
223 continue;
224 err = __team_option_inst_add(team, option, port);
225 if (err)
226 goto inst_del_port;
227 }
228 return 0;
229
230inst_del_port:
231 __team_option_inst_del_port(team, port);
232 return err;
233}
234
235static void __team_option_inst_mark_removed_port(struct team *team,
236 struct team_port *port)
237{
238 struct team_option_inst *opt_inst;
239
240 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
241 if (opt_inst->info.port == port) {
242 opt_inst->changed = true;
243 opt_inst->removed = true;
244 }
245 }
246}
247
248static int __team_options_register(struct team *team,
249 const struct team_option *option,
250 size_t option_count)
251{
252 int i;
253 struct team_option **dst_opts;
254 int err;
255
256 dst_opts = kcalloc(option_count, sizeof(struct team_option *),
257 GFP_KERNEL);
258 if (!dst_opts)
259 return -ENOMEM;
260 for (i = 0; i < option_count; i++, option++) {
261 if (__team_find_option(team, option->name)) {
262 err = -EEXIST;
263 goto alloc_rollback;
264 }
265 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL);
266 if (!dst_opts[i]) {
267 err = -ENOMEM;
268 goto alloc_rollback;
269 }
270 }
271
272 for (i = 0; i < option_count; i++) {
273 err = __team_option_inst_add_option(team, dst_opts[i]);
274 if (err)
275 goto inst_rollback;
276 list_add_tail(&dst_opts[i]->list, &team->option_list);
277 }
278
279 kfree(dst_opts);
280 return 0;
281
282inst_rollback:
283 for (i--; i >= 0; i--) {
284 __team_option_inst_del_option(team, dst_opts[i]);
285 list_del(&dst_opts[i]->list);
286 }
287
288 i = option_count;
289alloc_rollback:
290 for (i--; i >= 0; i--)
291 kfree(dst_opts[i]);
292
293 kfree(dst_opts);
294 return err;
295}
296
297static void __team_options_mark_removed(struct team *team,
298 const struct team_option *option,
299 size_t option_count)
300{
301 int i;
302
303 for (i = 0; i < option_count; i++, option++) {
304 struct team_option *del_opt;
305
306 del_opt = __team_find_option(team, option->name);
307 if (del_opt)
308 __team_option_inst_mark_removed_option(team, del_opt);
309 }
310}
311
312static void __team_options_unregister(struct team *team,
313 const struct team_option *option,
314 size_t option_count)
315{
316 int i;
317
318 for (i = 0; i < option_count; i++, option++) {
319 struct team_option *del_opt;
320
321 del_opt = __team_find_option(team, option->name);
322 if (del_opt) {
323 __team_option_inst_del_option(team, del_opt);
324 list_del(&del_opt->list);
325 kfree(del_opt);
326 }
327 }
328}
329
330static void __team_options_change_check(struct team *team);
331
332int team_options_register(struct team *team,
333 const struct team_option *option,
334 size_t option_count)
335{
336 int err;
337
338 err = __team_options_register(team, option, option_count);
339 if (err)
340 return err;
341 __team_options_change_check(team);
342 return 0;
343}
344EXPORT_SYMBOL(team_options_register);
345
346void team_options_unregister(struct team *team,
347 const struct team_option *option,
348 size_t option_count)
349{
350 __team_options_mark_removed(team, option, option_count);
351 __team_options_change_check(team);
352 __team_options_unregister(team, option, option_count);
353}
354EXPORT_SYMBOL(team_options_unregister);
355
356static int team_option_get(struct team *team,
357 struct team_option_inst *opt_inst,
358 struct team_gsetter_ctx *ctx)
359{
360 if (!opt_inst->option->getter)
361 return -EOPNOTSUPP;
362
363 opt_inst->option->getter(team, ctx);
364 return 0;
365}
366
367static 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
376void 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}
383EXPORT_SYMBOL(team_option_inst_set_change);
384
385void team_options_change_check(struct team *team)
386{
387 __team_options_change_check(team);
388}
389EXPORT_SYMBOL(team_options_change_check);
390
391
392/****************
393 * Mode handling
394 ****************/
395
396static LIST_HEAD(mode_list);
397static DEFINE_SPINLOCK(mode_list_lock);
398
399struct team_mode_item {
400 struct list_head list;
401 const struct team_mode *mode;
402};
403
404static 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
415static 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
425int 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);
446unlock:
447 spin_unlock(&mode_list_lock);
448 return err;
449}
450EXPORT_SYMBOL(team_mode_register);
451
452void 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}
464EXPORT_SYMBOL(team_mode_unregister);
465
466static 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
493static void team_mode_put(const struct team_mode *mode)
494{
495 module_put(mode->owner);
496}
497
498static bool team_dummy_transmit(struct team *team, struct sk_buff *skb)
499{
500 dev_kfree_skb_any(skb);
501 return false;
502}
503
504static 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
511static const struct team_mode __team_no_mode = {
512 .kind = "*NOMODE*",
513};
514
515static bool team_is_mode_set(struct team *team)
516{
517 return team->mode != &__team_no_mode;
518}
519
520static void team_set_no_mode(struct team *team)
521{
522 team->user_carrier_enabled = false;
523 team->mode = &__team_no_mode;
524}
525
526static 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 */
551static 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
589static 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
627static 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
650static 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
658static void team_notify_peers_init(struct team *team)
659{
660 INIT_DELAYED_WORK(&team->notify_peers.dw, team_notify_peers_work);
661}
662
663static 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
673static 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
696static 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
704static void team_mcast_rejoin_init(struct team *team)
705{
706 INIT_DELAYED_WORK(&team->mcast_rejoin.dw, team_mcast_rejoin_work);
707}
708
709static 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 */
720static 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 if (is_link_local_ether_addr(eth_hdr(skb)->h_dest))
737 /* link-local packets are mostly useful when stack receives them
738 * with the link they arrive on.
739 */
740 return RX_HANDLER_PASS;
741 /* allow exact match delivery for disabled ports */
742 res = RX_HANDLER_EXACT;
743 } else {
744 res = team->ops.receive(team, port, skb);
745 }
746 if (res == RX_HANDLER_ANOTHER) {
747 struct team_pcpu_stats *pcpu_stats;
748
749 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
750 u64_stats_update_begin(&pcpu_stats->syncp);
751 u64_stats_inc(&pcpu_stats->rx_packets);
752 u64_stats_add(&pcpu_stats->rx_bytes, skb->len);
753 if (skb->pkt_type == PACKET_MULTICAST)
754 u64_stats_inc(&pcpu_stats->rx_multicast);
755 u64_stats_update_end(&pcpu_stats->syncp);
756
757 skb->dev = team->dev;
758 } else if (res == RX_HANDLER_EXACT) {
759 this_cpu_inc(team->pcpu_stats->rx_nohandler);
760 } else {
761 this_cpu_inc(team->pcpu_stats->rx_dropped);
762 }
763
764 return res;
765}
766
767
768/*************************************
769 * Multiqueue Tx port select override
770 *************************************/
771
772static int team_queue_override_init(struct team *team)
773{
774 struct list_head *listarr;
775 unsigned int queue_cnt = team->dev->num_tx_queues - 1;
776 unsigned int i;
777
778 if (!queue_cnt)
779 return 0;
780 listarr = kmalloc_array(queue_cnt, sizeof(struct list_head),
781 GFP_KERNEL);
782 if (!listarr)
783 return -ENOMEM;
784 team->qom_lists = listarr;
785 for (i = 0; i < queue_cnt; i++)
786 INIT_LIST_HEAD(listarr++);
787 return 0;
788}
789
790static void team_queue_override_fini(struct team *team)
791{
792 kfree(team->qom_lists);
793}
794
795static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id)
796{
797 return &team->qom_lists[queue_id - 1];
798}
799
800/*
801 * note: already called with rcu_read_lock
802 */
803static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb)
804{
805 struct list_head *qom_list;
806 struct team_port *port;
807
808 if (!team->queue_override_enabled || !skb->queue_mapping)
809 return false;
810 qom_list = __team_get_qom_list(team, skb->queue_mapping);
811 list_for_each_entry_rcu(port, qom_list, qom_list) {
812 if (!team_dev_queue_xmit(team, port, skb))
813 return true;
814 }
815 return false;
816}
817
818static void __team_queue_override_port_del(struct team *team,
819 struct team_port *port)
820{
821 if (!port->queue_id)
822 return;
823 list_del_rcu(&port->qom_list);
824}
825
826static bool team_queue_override_port_has_gt_prio_than(struct team_port *port,
827 struct team_port *cur)
828{
829 if (port->priority < cur->priority)
830 return true;
831 if (port->priority > cur->priority)
832 return false;
833 if (port->index < cur->index)
834 return true;
835 return false;
836}
837
838static void __team_queue_override_port_add(struct team *team,
839 struct team_port *port)
840{
841 struct team_port *cur;
842 struct list_head *qom_list;
843 struct list_head *node;
844
845 if (!port->queue_id)
846 return;
847 qom_list = __team_get_qom_list(team, port->queue_id);
848 node = qom_list;
849 list_for_each_entry(cur, qom_list, qom_list) {
850 if (team_queue_override_port_has_gt_prio_than(port, cur))
851 break;
852 node = &cur->qom_list;
853 }
854 list_add_tail_rcu(&port->qom_list, node);
855}
856
857static void __team_queue_override_enabled_check(struct team *team)
858{
859 struct team_port *port;
860 bool enabled = false;
861
862 list_for_each_entry(port, &team->port_list, list) {
863 if (port->queue_id) {
864 enabled = true;
865 break;
866 }
867 }
868 if (enabled == team->queue_override_enabled)
869 return;
870 netdev_dbg(team->dev, "%s queue override\n",
871 enabled ? "Enabling" : "Disabling");
872 team->queue_override_enabled = enabled;
873}
874
875static void team_queue_override_port_prio_changed(struct team *team,
876 struct team_port *port)
877{
878 if (!port->queue_id || team_port_enabled(port))
879 return;
880 __team_queue_override_port_del(team, port);
881 __team_queue_override_port_add(team, port);
882 __team_queue_override_enabled_check(team);
883}
884
885static void team_queue_override_port_change_queue_id(struct team *team,
886 struct team_port *port,
887 u16 new_queue_id)
888{
889 if (team_port_enabled(port)) {
890 __team_queue_override_port_del(team, port);
891 port->queue_id = new_queue_id;
892 __team_queue_override_port_add(team, port);
893 __team_queue_override_enabled_check(team);
894 } else {
895 port->queue_id = new_queue_id;
896 }
897}
898
899static void team_queue_override_port_add(struct team *team,
900 struct team_port *port)
901{
902 __team_queue_override_port_add(team, port);
903 __team_queue_override_enabled_check(team);
904}
905
906static void team_queue_override_port_del(struct team *team,
907 struct team_port *port)
908{
909 __team_queue_override_port_del(team, port);
910 __team_queue_override_enabled_check(team);
911}
912
913
914/****************
915 * Port handling
916 ****************/
917
918static bool team_port_find(const struct team *team,
919 const struct team_port *port)
920{
921 struct team_port *cur;
922
923 list_for_each_entry(cur, &team->port_list, list)
924 if (cur == port)
925 return true;
926 return false;
927}
928
929/*
930 * Enable/disable port by adding to enabled port hashlist and setting
931 * port->index (Might be racy so reader could see incorrect ifindex when
932 * processing a flying packet, but that is not a problem). Write guarded
933 * by team->lock.
934 */
935static void team_port_enable(struct team *team,
936 struct team_port *port)
937{
938 if (team_port_enabled(port))
939 return;
940 port->index = team->en_port_count++;
941 hlist_add_head_rcu(&port->hlist,
942 team_port_index_hash(team, port->index));
943 team_adjust_ops(team);
944 team_queue_override_port_add(team, port);
945 if (team->ops.port_enabled)
946 team->ops.port_enabled(team, port);
947 team_notify_peers(team);
948 team_mcast_rejoin(team);
949 team_lower_state_changed(port);
950}
951
952static void __reconstruct_port_hlist(struct team *team, int rm_index)
953{
954 int i;
955 struct team_port *port;
956
957 for (i = rm_index + 1; i < team->en_port_count; i++) {
958 port = team_get_port_by_index(team, i);
959 hlist_del_rcu(&port->hlist);
960 port->index--;
961 hlist_add_head_rcu(&port->hlist,
962 team_port_index_hash(team, port->index));
963 }
964}
965
966static void team_port_disable(struct team *team,
967 struct team_port *port)
968{
969 if (!team_port_enabled(port))
970 return;
971 if (team->ops.port_disabled)
972 team->ops.port_disabled(team, port);
973 hlist_del_rcu(&port->hlist);
974 __reconstruct_port_hlist(team, port->index);
975 port->index = -1;
976 team->en_port_count--;
977 team_queue_override_port_del(team, port);
978 team_adjust_ops(team);
979 team_lower_state_changed(port);
980}
981
982#define TEAM_VLAN_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \
983 NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | \
984 NETIF_F_HIGHDMA | NETIF_F_LRO)
985
986#define TEAM_ENC_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \
987 NETIF_F_RXCSUM | NETIF_F_GSO_SOFTWARE)
988
989static void __team_compute_features(struct team *team)
990{
991 struct team_port *port;
992 netdev_features_t vlan_features = TEAM_VLAN_FEATURES &
993 NETIF_F_ALL_FOR_ALL;
994 netdev_features_t enc_features = TEAM_ENC_FEATURES;
995 unsigned short max_hard_header_len = ETH_HLEN;
996 unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE |
997 IFF_XMIT_DST_RELEASE_PERM;
998
999 rcu_read_lock();
1000 list_for_each_entry_rcu(port, &team->port_list, list) {
1001 vlan_features = netdev_increment_features(vlan_features,
1002 port->dev->vlan_features,
1003 TEAM_VLAN_FEATURES);
1004 enc_features =
1005 netdev_increment_features(enc_features,
1006 port->dev->hw_enc_features,
1007 TEAM_ENC_FEATURES);
1008
1009
1010 dst_release_flag &= port->dev->priv_flags;
1011 if (port->dev->hard_header_len > max_hard_header_len)
1012 max_hard_header_len = port->dev->hard_header_len;
1013 }
1014 rcu_read_unlock();
1015
1016 team->dev->vlan_features = vlan_features;
1017 team->dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL |
1018 NETIF_F_HW_VLAN_CTAG_TX |
1019 NETIF_F_HW_VLAN_STAG_TX;
1020 team->dev->hard_header_len = max_hard_header_len;
1021
1022 team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
1023 if (dst_release_flag == (IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM))
1024 team->dev->priv_flags |= IFF_XMIT_DST_RELEASE;
1025}
1026
1027static void team_compute_features(struct team *team)
1028{
1029 __team_compute_features(team);
1030 netdev_change_features(team->dev);
1031}
1032
1033static int team_port_enter(struct team *team, struct team_port *port)
1034{
1035 int err = 0;
1036
1037 dev_hold(team->dev);
1038 if (team->ops.port_enter) {
1039 err = team->ops.port_enter(team, port);
1040 if (err) {
1041 netdev_err(team->dev, "Device %s failed to enter team mode\n",
1042 port->dev->name);
1043 goto err_port_enter;
1044 }
1045 }
1046
1047 return 0;
1048
1049err_port_enter:
1050 dev_put(team->dev);
1051
1052 return err;
1053}
1054
1055static void team_port_leave(struct team *team, struct team_port *port)
1056{
1057 if (team->ops.port_leave)
1058 team->ops.port_leave(team, port);
1059 dev_put(team->dev);
1060}
1061
1062#ifdef CONFIG_NET_POLL_CONTROLLER
1063static int __team_port_enable_netpoll(struct team_port *port)
1064{
1065 struct netpoll *np;
1066 int err;
1067
1068 np = kzalloc(sizeof(*np), GFP_KERNEL);
1069 if (!np)
1070 return -ENOMEM;
1071
1072 err = __netpoll_setup(np, port->dev);
1073 if (err) {
1074 kfree(np);
1075 return err;
1076 }
1077 port->np = np;
1078 return err;
1079}
1080
1081static int team_port_enable_netpoll(struct team_port *port)
1082{
1083 if (!port->team->dev->npinfo)
1084 return 0;
1085
1086 return __team_port_enable_netpoll(port);
1087}
1088
1089static void team_port_disable_netpoll(struct team_port *port)
1090{
1091 struct netpoll *np = port->np;
1092
1093 if (!np)
1094 return;
1095 port->np = NULL;
1096
1097 __netpoll_free(np);
1098}
1099#else
1100static int team_port_enable_netpoll(struct team_port *port)
1101{
1102 return 0;
1103}
1104static void team_port_disable_netpoll(struct team_port *port)
1105{
1106}
1107#endif
1108
1109static int team_upper_dev_link(struct team *team, struct team_port *port,
1110 struct netlink_ext_ack *extack)
1111{
1112 struct netdev_lag_upper_info lag_upper_info;
1113 int err;
1114
1115 lag_upper_info.tx_type = team->mode->lag_tx_type;
1116 lag_upper_info.hash_type = NETDEV_LAG_HASH_UNKNOWN;
1117 err = netdev_master_upper_dev_link(port->dev, team->dev, NULL,
1118 &lag_upper_info, extack);
1119 if (err)
1120 return err;
1121 port->dev->priv_flags |= IFF_TEAM_PORT;
1122 return 0;
1123}
1124
1125static void team_upper_dev_unlink(struct team *team, struct team_port *port)
1126{
1127 netdev_upper_dev_unlink(port->dev, team->dev);
1128 port->dev->priv_flags &= ~IFF_TEAM_PORT;
1129}
1130
1131static void __team_port_change_port_added(struct team_port *port, bool linkup);
1132static int team_dev_type_check_change(struct net_device *dev,
1133 struct net_device *port_dev);
1134
1135static int team_port_add(struct team *team, struct net_device *port_dev,
1136 struct netlink_ext_ack *extack)
1137{
1138 struct net_device *dev = team->dev;
1139 struct team_port *port;
1140 char *portname = port_dev->name;
1141 int err;
1142
1143 if (port_dev->flags & IFF_LOOPBACK) {
1144 NL_SET_ERR_MSG(extack, "Loopback device can't be added as a team port");
1145 netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n",
1146 portname);
1147 return -EINVAL;
1148 }
1149
1150 if (netif_is_team_port(port_dev)) {
1151 NL_SET_ERR_MSG(extack, "Device is already a port of a team device");
1152 netdev_err(dev, "Device %s is already a port "
1153 "of a team device\n", portname);
1154 return -EBUSY;
1155 }
1156
1157 if (dev == port_dev) {
1158 NL_SET_ERR_MSG(extack, "Cannot enslave team device to itself");
1159 netdev_err(dev, "Cannot enslave team device to itself\n");
1160 return -EINVAL;
1161 }
1162
1163 if (netdev_has_upper_dev(dev, port_dev)) {
1164 NL_SET_ERR_MSG(extack, "Device is already an upper device of the team interface");
1165 netdev_err(dev, "Device %s is already an upper device of the team interface\n",
1166 portname);
1167 return -EBUSY;
1168 }
1169
1170 if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
1171 vlan_uses_dev(dev)) {
1172 NL_SET_ERR_MSG(extack, "Device is VLAN challenged and team device has VLAN set up");
1173 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
1174 portname);
1175 return -EPERM;
1176 }
1177
1178 err = team_dev_type_check_change(dev, port_dev);
1179 if (err)
1180 return err;
1181
1182 if (port_dev->flags & IFF_UP) {
1183 NL_SET_ERR_MSG(extack, "Device is up. Set it down before adding it as a team port");
1184 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
1185 portname);
1186 return -EBUSY;
1187 }
1188
1189 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size,
1190 GFP_KERNEL);
1191 if (!port)
1192 return -ENOMEM;
1193
1194 port->dev = port_dev;
1195 port->team = team;
1196 INIT_LIST_HEAD(&port->qom_list);
1197
1198 port->orig.mtu = port_dev->mtu;
1199 err = dev_set_mtu(port_dev, dev->mtu);
1200 if (err) {
1201 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
1202 goto err_set_mtu;
1203 }
1204
1205 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len);
1206
1207 err = team_port_enter(team, port);
1208 if (err) {
1209 netdev_err(dev, "Device %s failed to enter team mode\n",
1210 portname);
1211 goto err_port_enter;
1212 }
1213
1214 err = dev_open(port_dev, extack);
1215 if (err) {
1216 netdev_dbg(dev, "Device %s opening failed\n",
1217 portname);
1218 goto err_dev_open;
1219 }
1220
1221 err = vlan_vids_add_by_dev(port_dev, dev);
1222 if (err) {
1223 netdev_err(dev, "Failed to add vlan ids to device %s\n",
1224 portname);
1225 goto err_vids_add;
1226 }
1227
1228 err = team_port_enable_netpoll(port);
1229 if (err) {
1230 netdev_err(dev, "Failed to enable netpoll on device %s\n",
1231 portname);
1232 goto err_enable_netpoll;
1233 }
1234
1235 if (!(dev->features & NETIF_F_LRO))
1236 dev_disable_lro(port_dev);
1237
1238 err = netdev_rx_handler_register(port_dev, team_handle_frame,
1239 port);
1240 if (err) {
1241 netdev_err(dev, "Device %s failed to register rx_handler\n",
1242 portname);
1243 goto err_handler_register;
1244 }
1245
1246 err = team_upper_dev_link(team, port, extack);
1247 if (err) {
1248 netdev_err(dev, "Device %s failed to set upper link\n",
1249 portname);
1250 goto err_set_upper_link;
1251 }
1252
1253 err = __team_option_inst_add_port(team, port);
1254 if (err) {
1255 netdev_err(dev, "Device %s failed to add per-port options\n",
1256 portname);
1257 goto err_option_port_add;
1258 }
1259
1260 /* set promiscuity level to new slave */
1261 if (dev->flags & IFF_PROMISC) {
1262 err = dev_set_promiscuity(port_dev, 1);
1263 if (err)
1264 goto err_set_slave_promisc;
1265 }
1266
1267 /* set allmulti level to new slave */
1268 if (dev->flags & IFF_ALLMULTI) {
1269 err = dev_set_allmulti(port_dev, 1);
1270 if (err) {
1271 if (dev->flags & IFF_PROMISC)
1272 dev_set_promiscuity(port_dev, -1);
1273 goto err_set_slave_promisc;
1274 }
1275 }
1276
1277 if (dev->flags & IFF_UP) {
1278 netif_addr_lock_bh(dev);
1279 dev_uc_sync_multiple(port_dev, dev);
1280 dev_mc_sync_multiple(port_dev, dev);
1281 netif_addr_unlock_bh(dev);
1282 }
1283
1284 port->index = -1;
1285 list_add_tail_rcu(&port->list, &team->port_list);
1286 team_port_enable(team, port);
1287 __team_compute_features(team);
1288 __team_port_change_port_added(port, !!netif_oper_up(port_dev));
1289 __team_options_change_check(team);
1290
1291 netdev_info(dev, "Port device %s added\n", portname);
1292
1293 return 0;
1294
1295err_set_slave_promisc:
1296 __team_option_inst_del_port(team, port);
1297
1298err_option_port_add:
1299 team_upper_dev_unlink(team, port);
1300
1301err_set_upper_link:
1302 netdev_rx_handler_unregister(port_dev);
1303
1304err_handler_register:
1305 team_port_disable_netpoll(port);
1306
1307err_enable_netpoll:
1308 vlan_vids_del_by_dev(port_dev, dev);
1309
1310err_vids_add:
1311 dev_close(port_dev);
1312
1313err_dev_open:
1314 team_port_leave(team, port);
1315 team_port_set_orig_dev_addr(port);
1316
1317err_port_enter:
1318 dev_set_mtu(port_dev, port->orig.mtu);
1319
1320err_set_mtu:
1321 kfree(port);
1322
1323 return err;
1324}
1325
1326static void __team_port_change_port_removed(struct team_port *port);
1327
1328static int team_port_del(struct team *team, struct net_device *port_dev)
1329{
1330 struct net_device *dev = team->dev;
1331 struct team_port *port;
1332 char *portname = port_dev->name;
1333
1334 port = team_port_get_rtnl(port_dev);
1335 if (!port || !team_port_find(team, port)) {
1336 netdev_err(dev, "Device %s does not act as a port of this team\n",
1337 portname);
1338 return -ENOENT;
1339 }
1340
1341 team_port_disable(team, port);
1342 list_del_rcu(&port->list);
1343
1344 if (dev->flags & IFF_PROMISC)
1345 dev_set_promiscuity(port_dev, -1);
1346 if (dev->flags & IFF_ALLMULTI)
1347 dev_set_allmulti(port_dev, -1);
1348
1349 team_upper_dev_unlink(team, port);
1350 netdev_rx_handler_unregister(port_dev);
1351 team_port_disable_netpoll(port);
1352 vlan_vids_del_by_dev(port_dev, dev);
1353 if (dev->flags & IFF_UP) {
1354 dev_uc_unsync(port_dev, dev);
1355 dev_mc_unsync(port_dev, dev);
1356 }
1357 dev_close(port_dev);
1358 team_port_leave(team, port);
1359
1360 __team_option_inst_mark_removed_port(team, port);
1361 __team_options_change_check(team);
1362 __team_option_inst_del_port(team, port);
1363 __team_port_change_port_removed(port);
1364
1365 team_port_set_orig_dev_addr(port);
1366 dev_set_mtu(port_dev, port->orig.mtu);
1367 kfree_rcu(port, rcu);
1368 netdev_info(dev, "Port device %s removed\n", portname);
1369 __team_compute_features(team);
1370
1371 return 0;
1372}
1373
1374
1375/*****************
1376 * Net device ops
1377 *****************/
1378
1379static void team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
1380{
1381 ctx->data.str_val = team->mode->kind;
1382}
1383
1384static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
1385{
1386 return team_change_mode(team, ctx->data.str_val);
1387}
1388
1389static void team_notify_peers_count_get(struct team *team,
1390 struct team_gsetter_ctx *ctx)
1391{
1392 ctx->data.u32_val = team->notify_peers.count;
1393}
1394
1395static int team_notify_peers_count_set(struct team *team,
1396 struct team_gsetter_ctx *ctx)
1397{
1398 team->notify_peers.count = ctx->data.u32_val;
1399 return 0;
1400}
1401
1402static void team_notify_peers_interval_get(struct team *team,
1403 struct team_gsetter_ctx *ctx)
1404{
1405 ctx->data.u32_val = team->notify_peers.interval;
1406}
1407
1408static int team_notify_peers_interval_set(struct team *team,
1409 struct team_gsetter_ctx *ctx)
1410{
1411 team->notify_peers.interval = ctx->data.u32_val;
1412 return 0;
1413}
1414
1415static void team_mcast_rejoin_count_get(struct team *team,
1416 struct team_gsetter_ctx *ctx)
1417{
1418 ctx->data.u32_val = team->mcast_rejoin.count;
1419}
1420
1421static int team_mcast_rejoin_count_set(struct team *team,
1422 struct team_gsetter_ctx *ctx)
1423{
1424 team->mcast_rejoin.count = ctx->data.u32_val;
1425 return 0;
1426}
1427
1428static void team_mcast_rejoin_interval_get(struct team *team,
1429 struct team_gsetter_ctx *ctx)
1430{
1431 ctx->data.u32_val = team->mcast_rejoin.interval;
1432}
1433
1434static int team_mcast_rejoin_interval_set(struct team *team,
1435 struct team_gsetter_ctx *ctx)
1436{
1437 team->mcast_rejoin.interval = ctx->data.u32_val;
1438 return 0;
1439}
1440
1441static void team_port_en_option_get(struct team *team,
1442 struct team_gsetter_ctx *ctx)
1443{
1444 struct team_port *port = ctx->info->port;
1445
1446 ctx->data.bool_val = team_port_enabled(port);
1447}
1448
1449static int team_port_en_option_set(struct team *team,
1450 struct team_gsetter_ctx *ctx)
1451{
1452 struct team_port *port = ctx->info->port;
1453
1454 if (ctx->data.bool_val)
1455 team_port_enable(team, port);
1456 else
1457 team_port_disable(team, port);
1458 return 0;
1459}
1460
1461static void team_user_linkup_option_get(struct team *team,
1462 struct team_gsetter_ctx *ctx)
1463{
1464 struct team_port *port = ctx->info->port;
1465
1466 ctx->data.bool_val = port->user.linkup;
1467}
1468
1469static void __team_carrier_check(struct team *team);
1470
1471static int team_user_linkup_option_set(struct team *team,
1472 struct team_gsetter_ctx *ctx)
1473{
1474 struct team_port *port = ctx->info->port;
1475
1476 port->user.linkup = ctx->data.bool_val;
1477 team_refresh_port_linkup(port);
1478 __team_carrier_check(port->team);
1479 return 0;
1480}
1481
1482static void team_user_linkup_en_option_get(struct team *team,
1483 struct team_gsetter_ctx *ctx)
1484{
1485 struct team_port *port = ctx->info->port;
1486
1487 ctx->data.bool_val = port->user.linkup_enabled;
1488}
1489
1490static 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
1501static void 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}
1508
1509static int team_priority_option_set(struct team *team,
1510 struct team_gsetter_ctx *ctx)
1511{
1512 struct team_port *port = ctx->info->port;
1513 s32 priority = ctx->data.s32_val;
1514
1515 if (port->priority == priority)
1516 return 0;
1517 port->priority = priority;
1518 team_queue_override_port_prio_changed(team, port);
1519 return 0;
1520}
1521
1522static void team_queue_id_option_get(struct team *team,
1523 struct team_gsetter_ctx *ctx)
1524{
1525 struct team_port *port = ctx->info->port;
1526
1527 ctx->data.u32_val = port->queue_id;
1528}
1529
1530static int team_queue_id_option_set(struct team *team,
1531 struct team_gsetter_ctx *ctx)
1532{
1533 struct team_port *port = ctx->info->port;
1534 u16 new_queue_id = ctx->data.u32_val;
1535
1536 if (port->queue_id == new_queue_id)
1537 return 0;
1538 if (new_queue_id >= team->dev->real_num_tx_queues)
1539 return -EINVAL;
1540 team_queue_override_port_change_queue_id(team, port, new_queue_id);
1541 return 0;
1542}
1543
1544static const struct team_option team_options[] = {
1545 {
1546 .name = "mode",
1547 .type = TEAM_OPTION_TYPE_STRING,
1548 .getter = team_mode_option_get,
1549 .setter = team_mode_option_set,
1550 },
1551 {
1552 .name = "notify_peers_count",
1553 .type = TEAM_OPTION_TYPE_U32,
1554 .getter = team_notify_peers_count_get,
1555 .setter = team_notify_peers_count_set,
1556 },
1557 {
1558 .name = "notify_peers_interval",
1559 .type = TEAM_OPTION_TYPE_U32,
1560 .getter = team_notify_peers_interval_get,
1561 .setter = team_notify_peers_interval_set,
1562 },
1563 {
1564 .name = "mcast_rejoin_count",
1565 .type = TEAM_OPTION_TYPE_U32,
1566 .getter = team_mcast_rejoin_count_get,
1567 .setter = team_mcast_rejoin_count_set,
1568 },
1569 {
1570 .name = "mcast_rejoin_interval",
1571 .type = TEAM_OPTION_TYPE_U32,
1572 .getter = team_mcast_rejoin_interval_get,
1573 .setter = team_mcast_rejoin_interval_set,
1574 },
1575 {
1576 .name = "enabled",
1577 .type = TEAM_OPTION_TYPE_BOOL,
1578 .per_port = true,
1579 .getter = team_port_en_option_get,
1580 .setter = team_port_en_option_set,
1581 },
1582 {
1583 .name = "user_linkup",
1584 .type = TEAM_OPTION_TYPE_BOOL,
1585 .per_port = true,
1586 .getter = team_user_linkup_option_get,
1587 .setter = team_user_linkup_option_set,
1588 },
1589 {
1590 .name = "user_linkup_enabled",
1591 .type = TEAM_OPTION_TYPE_BOOL,
1592 .per_port = true,
1593 .getter = team_user_linkup_en_option_get,
1594 .setter = team_user_linkup_en_option_set,
1595 },
1596 {
1597 .name = "priority",
1598 .type = TEAM_OPTION_TYPE_S32,
1599 .per_port = true,
1600 .getter = team_priority_option_get,
1601 .setter = team_priority_option_set,
1602 },
1603 {
1604 .name = "queue_id",
1605 .type = TEAM_OPTION_TYPE_U32,
1606 .per_port = true,
1607 .getter = team_queue_id_option_get,
1608 .setter = team_queue_id_option_set,
1609 },
1610};
1611
1612
1613static int team_init(struct net_device *dev)
1614{
1615 struct team *team = netdev_priv(dev);
1616 int i;
1617 int err;
1618
1619 team->dev = dev;
1620 team_set_no_mode(team);
1621 team->notifier_ctx = false;
1622
1623 team->pcpu_stats = netdev_alloc_pcpu_stats(struct team_pcpu_stats);
1624 if (!team->pcpu_stats)
1625 return -ENOMEM;
1626
1627 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
1628 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
1629 INIT_LIST_HEAD(&team->port_list);
1630 err = team_queue_override_init(team);
1631 if (err)
1632 goto err_team_queue_override_init;
1633
1634 team_adjust_ops(team);
1635
1636 INIT_LIST_HEAD(&team->option_list);
1637 INIT_LIST_HEAD(&team->option_inst_list);
1638
1639 team_notify_peers_init(team);
1640 team_mcast_rejoin_init(team);
1641
1642 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1643 if (err)
1644 goto err_options_register;
1645 netif_carrier_off(dev);
1646
1647 lockdep_register_key(&team->team_lock_key);
1648 __mutex_init(&team->lock, "team->team_lock_key", &team->team_lock_key);
1649 netdev_lockdep_set_classes(dev);
1650
1651 return 0;
1652
1653err_options_register:
1654 team_mcast_rejoin_fini(team);
1655 team_notify_peers_fini(team);
1656 team_queue_override_fini(team);
1657err_team_queue_override_init:
1658 free_percpu(team->pcpu_stats);
1659
1660 return err;
1661}
1662
1663static 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
1683static void team_destructor(struct net_device *dev)
1684{
1685 struct team *team = netdev_priv(dev);
1686
1687 free_percpu(team->pcpu_stats);
1688}
1689
1690static int team_open(struct net_device *dev)
1691{
1692 return 0;
1693}
1694
1695static int team_close(struct net_device *dev)
1696{
1697 struct team *team = netdev_priv(dev);
1698 struct team_port *port;
1699
1700 list_for_each_entry(port, &team->port_list, list) {
1701 dev_uc_unsync(port->dev, dev);
1702 dev_mc_unsync(port->dev, dev);
1703 }
1704
1705 return 0;
1706}
1707
1708/*
1709 * note: already called with rcu_read_lock
1710 */
1711static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1712{
1713 struct team *team = netdev_priv(dev);
1714 bool tx_success;
1715 unsigned int len = skb->len;
1716
1717 tx_success = team_queue_override_transmit(team, skb);
1718 if (!tx_success)
1719 tx_success = team->ops.transmit(team, skb);
1720 if (tx_success) {
1721 struct team_pcpu_stats *pcpu_stats;
1722
1723 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1724 u64_stats_update_begin(&pcpu_stats->syncp);
1725 u64_stats_inc(&pcpu_stats->tx_packets);
1726 u64_stats_add(&pcpu_stats->tx_bytes, len);
1727 u64_stats_update_end(&pcpu_stats->syncp);
1728 } else {
1729 this_cpu_inc(team->pcpu_stats->tx_dropped);
1730 }
1731
1732 return NETDEV_TX_OK;
1733}
1734
1735static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb,
1736 struct net_device *sb_dev)
1737{
1738 /*
1739 * This helper function exists to help dev_pick_tx get the correct
1740 * destination queue. Using a helper function skips a call to
1741 * skb_tx_hash and will put the skbs in the queue we expect on their
1742 * way down to the team driver.
1743 */
1744 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1745
1746 /*
1747 * Save the original txq to restore before passing to the driver
1748 */
1749 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1750
1751 if (unlikely(txq >= dev->real_num_tx_queues)) {
1752 do {
1753 txq -= dev->real_num_tx_queues;
1754 } while (txq >= dev->real_num_tx_queues);
1755 }
1756 return txq;
1757}
1758
1759static void team_change_rx_flags(struct net_device *dev, int change)
1760{
1761 struct team *team = netdev_priv(dev);
1762 struct team_port *port;
1763 int inc;
1764
1765 rcu_read_lock();
1766 list_for_each_entry_rcu(port, &team->port_list, list) {
1767 if (change & IFF_PROMISC) {
1768 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1769 dev_set_promiscuity(port->dev, inc);
1770 }
1771 if (change & IFF_ALLMULTI) {
1772 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1773 dev_set_allmulti(port->dev, inc);
1774 }
1775 }
1776 rcu_read_unlock();
1777}
1778
1779static void team_set_rx_mode(struct net_device *dev)
1780{
1781 struct team *team = netdev_priv(dev);
1782 struct team_port *port;
1783
1784 rcu_read_lock();
1785 list_for_each_entry_rcu(port, &team->port_list, list) {
1786 dev_uc_sync_multiple(port->dev, dev);
1787 dev_mc_sync_multiple(port->dev, dev);
1788 }
1789 rcu_read_unlock();
1790}
1791
1792static int team_set_mac_address(struct net_device *dev, void *p)
1793{
1794 struct sockaddr *addr = p;
1795 struct team *team = netdev_priv(dev);
1796 struct team_port *port;
1797
1798 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data))
1799 return -EADDRNOTAVAIL;
1800 dev_addr_set(dev, addr->sa_data);
1801 mutex_lock(&team->lock);
1802 list_for_each_entry(port, &team->port_list, list)
1803 if (team->ops.port_change_dev_addr)
1804 team->ops.port_change_dev_addr(team, port);
1805 mutex_unlock(&team->lock);
1806 return 0;
1807}
1808
1809static int team_change_mtu(struct net_device *dev, int new_mtu)
1810{
1811 struct team *team = netdev_priv(dev);
1812 struct team_port *port;
1813 int err;
1814
1815 /*
1816 * Alhough this is reader, it's guarded by team lock. It's not possible
1817 * to traverse list in reverse under rcu_read_lock
1818 */
1819 mutex_lock(&team->lock);
1820 team->port_mtu_change_allowed = true;
1821 list_for_each_entry(port, &team->port_list, list) {
1822 err = dev_set_mtu(port->dev, new_mtu);
1823 if (err) {
1824 netdev_err(dev, "Device %s failed to change mtu",
1825 port->dev->name);
1826 goto unwind;
1827 }
1828 }
1829 team->port_mtu_change_allowed = false;
1830 mutex_unlock(&team->lock);
1831
1832 dev->mtu = new_mtu;
1833
1834 return 0;
1835
1836unwind:
1837 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1838 dev_set_mtu(port->dev, dev->mtu);
1839 team->port_mtu_change_allowed = false;
1840 mutex_unlock(&team->lock);
1841
1842 return err;
1843}
1844
1845static void
1846team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1847{
1848 struct team *team = netdev_priv(dev);
1849 struct team_pcpu_stats *p;
1850 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1851 u32 rx_dropped = 0, tx_dropped = 0, rx_nohandler = 0;
1852 unsigned int start;
1853 int i;
1854
1855 for_each_possible_cpu(i) {
1856 p = per_cpu_ptr(team->pcpu_stats, i);
1857 do {
1858 start = u64_stats_fetch_begin(&p->syncp);
1859 rx_packets = u64_stats_read(&p->rx_packets);
1860 rx_bytes = u64_stats_read(&p->rx_bytes);
1861 rx_multicast = u64_stats_read(&p->rx_multicast);
1862 tx_packets = u64_stats_read(&p->tx_packets);
1863 tx_bytes = u64_stats_read(&p->tx_bytes);
1864 } while (u64_stats_fetch_retry(&p->syncp, start));
1865
1866 stats->rx_packets += rx_packets;
1867 stats->rx_bytes += rx_bytes;
1868 stats->multicast += rx_multicast;
1869 stats->tx_packets += tx_packets;
1870 stats->tx_bytes += tx_bytes;
1871 /*
1872 * rx_dropped, tx_dropped & rx_nohandler are u32,
1873 * updated without syncp protection.
1874 */
1875 rx_dropped += READ_ONCE(p->rx_dropped);
1876 tx_dropped += READ_ONCE(p->tx_dropped);
1877 rx_nohandler += READ_ONCE(p->rx_nohandler);
1878 }
1879 stats->rx_dropped = rx_dropped;
1880 stats->tx_dropped = tx_dropped;
1881 stats->rx_nohandler = rx_nohandler;
1882}
1883
1884static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
1885{
1886 struct team *team = netdev_priv(dev);
1887 struct team_port *port;
1888 int err;
1889
1890 /*
1891 * Alhough this is reader, it's guarded by team lock. It's not possible
1892 * to traverse list in reverse under rcu_read_lock
1893 */
1894 mutex_lock(&team->lock);
1895 list_for_each_entry(port, &team->port_list, list) {
1896 err = vlan_vid_add(port->dev, proto, vid);
1897 if (err)
1898 goto unwind;
1899 }
1900 mutex_unlock(&team->lock);
1901
1902 return 0;
1903
1904unwind:
1905 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1906 vlan_vid_del(port->dev, proto, vid);
1907 mutex_unlock(&team->lock);
1908
1909 return err;
1910}
1911
1912static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
1913{
1914 struct team *team = netdev_priv(dev);
1915 struct team_port *port;
1916
1917 mutex_lock(&team->lock);
1918 list_for_each_entry(port, &team->port_list, list)
1919 vlan_vid_del(port->dev, proto, vid);
1920 mutex_unlock(&team->lock);
1921
1922 return 0;
1923}
1924
1925#ifdef CONFIG_NET_POLL_CONTROLLER
1926static void team_poll_controller(struct net_device *dev)
1927{
1928}
1929
1930static void __team_netpoll_cleanup(struct team *team)
1931{
1932 struct team_port *port;
1933
1934 list_for_each_entry(port, &team->port_list, list)
1935 team_port_disable_netpoll(port);
1936}
1937
1938static void team_netpoll_cleanup(struct net_device *dev)
1939{
1940 struct team *team = netdev_priv(dev);
1941
1942 mutex_lock(&team->lock);
1943 __team_netpoll_cleanup(team);
1944 mutex_unlock(&team->lock);
1945}
1946
1947static int team_netpoll_setup(struct net_device *dev,
1948 struct netpoll_info *npifo)
1949{
1950 struct team *team = netdev_priv(dev);
1951 struct team_port *port;
1952 int err = 0;
1953
1954 mutex_lock(&team->lock);
1955 list_for_each_entry(port, &team->port_list, list) {
1956 err = __team_port_enable_netpoll(port);
1957 if (err) {
1958 __team_netpoll_cleanup(team);
1959 break;
1960 }
1961 }
1962 mutex_unlock(&team->lock);
1963 return err;
1964}
1965#endif
1966
1967static int team_add_slave(struct net_device *dev, struct net_device *port_dev,
1968 struct netlink_ext_ack *extack)
1969{
1970 struct team *team = netdev_priv(dev);
1971 int err;
1972
1973 mutex_lock(&team->lock);
1974 err = team_port_add(team, port_dev, extack);
1975 mutex_unlock(&team->lock);
1976
1977 if (!err)
1978 netdev_change_features(dev);
1979
1980 return err;
1981}
1982
1983static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1984{
1985 struct team *team = netdev_priv(dev);
1986 int err;
1987
1988 mutex_lock(&team->lock);
1989 err = team_port_del(team, port_dev);
1990 mutex_unlock(&team->lock);
1991
1992 if (err)
1993 return err;
1994
1995 if (netif_is_team_master(port_dev)) {
1996 lockdep_unregister_key(&team->team_lock_key);
1997 lockdep_register_key(&team->team_lock_key);
1998 lockdep_set_class(&team->lock, &team->team_lock_key);
1999 }
2000 netdev_change_features(dev);
2001
2002 return err;
2003}
2004
2005static netdev_features_t team_fix_features(struct net_device *dev,
2006 netdev_features_t features)
2007{
2008 struct team_port *port;
2009 struct team *team = netdev_priv(dev);
2010 netdev_features_t mask;
2011
2012 mask = features;
2013 features &= ~NETIF_F_ONE_FOR_ALL;
2014 features |= NETIF_F_ALL_FOR_ALL;
2015
2016 rcu_read_lock();
2017 list_for_each_entry_rcu(port, &team->port_list, list) {
2018 features = netdev_increment_features(features,
2019 port->dev->features,
2020 mask);
2021 }
2022 rcu_read_unlock();
2023
2024 features = netdev_add_tso_features(features, mask);
2025
2026 return features;
2027}
2028
2029static int team_change_carrier(struct net_device *dev, bool new_carrier)
2030{
2031 struct team *team = netdev_priv(dev);
2032
2033 team->user_carrier_enabled = true;
2034
2035 if (new_carrier)
2036 netif_carrier_on(dev);
2037 else
2038 netif_carrier_off(dev);
2039 return 0;
2040}
2041
2042static const struct net_device_ops team_netdev_ops = {
2043 .ndo_init = team_init,
2044 .ndo_uninit = team_uninit,
2045 .ndo_open = team_open,
2046 .ndo_stop = team_close,
2047 .ndo_start_xmit = team_xmit,
2048 .ndo_select_queue = team_select_queue,
2049 .ndo_change_rx_flags = team_change_rx_flags,
2050 .ndo_set_rx_mode = team_set_rx_mode,
2051 .ndo_set_mac_address = team_set_mac_address,
2052 .ndo_change_mtu = team_change_mtu,
2053 .ndo_get_stats64 = team_get_stats64,
2054 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
2055 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
2056#ifdef CONFIG_NET_POLL_CONTROLLER
2057 .ndo_poll_controller = team_poll_controller,
2058 .ndo_netpoll_setup = team_netpoll_setup,
2059 .ndo_netpoll_cleanup = team_netpoll_cleanup,
2060#endif
2061 .ndo_add_slave = team_add_slave,
2062 .ndo_del_slave = team_del_slave,
2063 .ndo_fix_features = team_fix_features,
2064 .ndo_change_carrier = team_change_carrier,
2065 .ndo_features_check = passthru_features_check,
2066};
2067
2068/***********************
2069 * ethtool interface
2070 ***********************/
2071
2072static void team_ethtool_get_drvinfo(struct net_device *dev,
2073 struct ethtool_drvinfo *drvinfo)
2074{
2075 strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
2076}
2077
2078static int team_ethtool_get_link_ksettings(struct net_device *dev,
2079 struct ethtool_link_ksettings *cmd)
2080{
2081 struct team *team= netdev_priv(dev);
2082 unsigned long speed = 0;
2083 struct team_port *port;
2084
2085 cmd->base.duplex = DUPLEX_UNKNOWN;
2086 cmd->base.port = PORT_OTHER;
2087
2088 rcu_read_lock();
2089 list_for_each_entry_rcu(port, &team->port_list, list) {
2090 if (team_port_txable(port)) {
2091 if (port->state.speed != SPEED_UNKNOWN)
2092 speed += port->state.speed;
2093 if (cmd->base.duplex == DUPLEX_UNKNOWN &&
2094 port->state.duplex != DUPLEX_UNKNOWN)
2095 cmd->base.duplex = port->state.duplex;
2096 }
2097 }
2098 rcu_read_unlock();
2099
2100 cmd->base.speed = speed ? : SPEED_UNKNOWN;
2101
2102 return 0;
2103}
2104
2105static const struct ethtool_ops team_ethtool_ops = {
2106 .get_drvinfo = team_ethtool_get_drvinfo,
2107 .get_link = ethtool_op_get_link,
2108 .get_link_ksettings = team_ethtool_get_link_ksettings,
2109};
2110
2111/***********************
2112 * rt netlink interface
2113 ***********************/
2114
2115static void team_setup_by_port(struct net_device *dev,
2116 struct net_device *port_dev)
2117{
2118 struct team *team = netdev_priv(dev);
2119
2120 if (port_dev->type == ARPHRD_ETHER)
2121 dev->header_ops = team->header_ops_cache;
2122 else
2123 dev->header_ops = port_dev->header_ops;
2124 dev->type = port_dev->type;
2125 dev->hard_header_len = port_dev->hard_header_len;
2126 dev->needed_headroom = port_dev->needed_headroom;
2127 dev->addr_len = port_dev->addr_len;
2128 dev->mtu = port_dev->mtu;
2129 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
2130 eth_hw_addr_inherit(dev, port_dev);
2131
2132 if (port_dev->flags & IFF_POINTOPOINT) {
2133 dev->flags &= ~(IFF_BROADCAST | IFF_MULTICAST);
2134 dev->flags |= (IFF_POINTOPOINT | IFF_NOARP);
2135 } else if ((port_dev->flags & (IFF_BROADCAST | IFF_MULTICAST)) ==
2136 (IFF_BROADCAST | IFF_MULTICAST)) {
2137 dev->flags |= (IFF_BROADCAST | IFF_MULTICAST);
2138 dev->flags &= ~(IFF_POINTOPOINT | IFF_NOARP);
2139 }
2140}
2141
2142static int team_dev_type_check_change(struct net_device *dev,
2143 struct net_device *port_dev)
2144{
2145 struct team *team = netdev_priv(dev);
2146 char *portname = port_dev->name;
2147 int err;
2148
2149 if (dev->type == port_dev->type)
2150 return 0;
2151 if (!list_empty(&team->port_list)) {
2152 netdev_err(dev, "Device %s is of different type\n", portname);
2153 return -EBUSY;
2154 }
2155 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev);
2156 err = notifier_to_errno(err);
2157 if (err) {
2158 netdev_err(dev, "Refused to change device type\n");
2159 return err;
2160 }
2161 dev_uc_flush(dev);
2162 dev_mc_flush(dev);
2163 team_setup_by_port(dev, port_dev);
2164 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev);
2165 return 0;
2166}
2167
2168static void team_setup(struct net_device *dev)
2169{
2170 struct team *team = netdev_priv(dev);
2171
2172 ether_setup(dev);
2173 dev->max_mtu = ETH_MAX_MTU;
2174 team->header_ops_cache = dev->header_ops;
2175
2176 dev->netdev_ops = &team_netdev_ops;
2177 dev->ethtool_ops = &team_ethtool_ops;
2178 dev->needs_free_netdev = true;
2179 dev->priv_destructor = team_destructor;
2180 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
2181 dev->priv_flags |= IFF_NO_QUEUE;
2182 dev->priv_flags |= IFF_TEAM;
2183
2184 /*
2185 * Indicate we support unicast address filtering. That way core won't
2186 * bring us to promisc mode in case a unicast addr is added.
2187 * Let this up to underlay drivers.
2188 */
2189 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
2190
2191 dev->features |= NETIF_F_LLTX;
2192 dev->features |= NETIF_F_GRO;
2193
2194 /* Don't allow team devices to change network namespaces. */
2195 dev->features |= NETIF_F_NETNS_LOCAL;
2196
2197 dev->hw_features = TEAM_VLAN_FEATURES |
2198 NETIF_F_HW_VLAN_CTAG_RX |
2199 NETIF_F_HW_VLAN_CTAG_FILTER |
2200 NETIF_F_HW_VLAN_STAG_RX |
2201 NETIF_F_HW_VLAN_STAG_FILTER;
2202
2203 dev->hw_features |= NETIF_F_GSO_ENCAP_ALL;
2204 dev->features |= dev->hw_features;
2205 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX;
2206}
2207
2208static int team_newlink(struct net *src_net, struct net_device *dev,
2209 struct nlattr *tb[], struct nlattr *data[],
2210 struct netlink_ext_ack *extack)
2211{
2212 if (tb[IFLA_ADDRESS] == NULL)
2213 eth_hw_addr_random(dev);
2214
2215 return register_netdevice(dev);
2216}
2217
2218static int team_validate(struct nlattr *tb[], struct nlattr *data[],
2219 struct netlink_ext_ack *extack)
2220{
2221 if (tb[IFLA_ADDRESS]) {
2222 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
2223 return -EINVAL;
2224 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
2225 return -EADDRNOTAVAIL;
2226 }
2227 return 0;
2228}
2229
2230static unsigned int team_get_num_tx_queues(void)
2231{
2232 return TEAM_DEFAULT_NUM_TX_QUEUES;
2233}
2234
2235static unsigned int team_get_num_rx_queues(void)
2236{
2237 return TEAM_DEFAULT_NUM_RX_QUEUES;
2238}
2239
2240static struct rtnl_link_ops team_link_ops __read_mostly = {
2241 .kind = DRV_NAME,
2242 .priv_size = sizeof(struct team),
2243 .setup = team_setup,
2244 .newlink = team_newlink,
2245 .validate = team_validate,
2246 .get_num_tx_queues = team_get_num_tx_queues,
2247 .get_num_rx_queues = team_get_num_rx_queues,
2248};
2249
2250
2251/***********************************
2252 * Generic netlink custom interface
2253 ***********************************/
2254
2255static struct genl_family team_nl_family;
2256
2257static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
2258 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
2259 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
2260 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
2261 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
2262};
2263
2264static const struct nla_policy
2265team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
2266 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
2267 [TEAM_ATTR_OPTION_NAME] = {
2268 .type = NLA_STRING,
2269 .len = TEAM_STRING_MAX_LEN,
2270 },
2271 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
2272 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
2273 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
2274 [TEAM_ATTR_OPTION_PORT_IFINDEX] = { .type = NLA_U32 },
2275 [TEAM_ATTR_OPTION_ARRAY_INDEX] = { .type = NLA_U32 },
2276};
2277
2278static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
2279{
2280 struct sk_buff *msg;
2281 void *hdr;
2282 int err;
2283
2284 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2285 if (!msg)
2286 return -ENOMEM;
2287
2288 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
2289 &team_nl_family, 0, TEAM_CMD_NOOP);
2290 if (!hdr) {
2291 err = -EMSGSIZE;
2292 goto err_msg_put;
2293 }
2294
2295 genlmsg_end(msg, hdr);
2296
2297 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid);
2298
2299err_msg_put:
2300 nlmsg_free(msg);
2301
2302 return err;
2303}
2304
2305/*
2306 * Netlink cmd functions should be locked by following two functions.
2307 * Since dev gets held here, that ensures dev won't disappear in between.
2308 */
2309static struct team *team_nl_team_get(struct genl_info *info)
2310{
2311 struct net *net = genl_info_net(info);
2312 int ifindex;
2313 struct net_device *dev;
2314 struct team *team;
2315
2316 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
2317 return NULL;
2318
2319 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
2320 dev = dev_get_by_index(net, ifindex);
2321 if (!dev || dev->netdev_ops != &team_netdev_ops) {
2322 dev_put(dev);
2323 return NULL;
2324 }
2325
2326 team = netdev_priv(dev);
2327 mutex_lock(&team->lock);
2328 return team;
2329}
2330
2331static void team_nl_team_put(struct team *team)
2332{
2333 mutex_unlock(&team->lock);
2334 dev_put(team->dev);
2335}
2336
2337typedef int team_nl_send_func_t(struct sk_buff *skb,
2338 struct team *team, u32 portid);
2339
2340static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid)
2341{
2342 return genlmsg_unicast(dev_net(team->dev), skb, portid);
2343}
2344
2345static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
2346 struct team_option_inst *opt_inst)
2347{
2348 struct nlattr *option_item;
2349 struct team_option *option = opt_inst->option;
2350 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
2351 struct team_gsetter_ctx ctx;
2352 int err;
2353
2354 ctx.info = opt_inst_info;
2355 err = team_option_get(team, opt_inst, &ctx);
2356 if (err)
2357 return err;
2358
2359 option_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_OPTION);
2360 if (!option_item)
2361 return -EMSGSIZE;
2362
2363 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
2364 goto nest_cancel;
2365 if (opt_inst_info->port &&
2366 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
2367 opt_inst_info->port->dev->ifindex))
2368 goto nest_cancel;
2369 if (opt_inst->option->array_size &&
2370 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
2371 opt_inst_info->array_index))
2372 goto nest_cancel;
2373
2374 switch (option->type) {
2375 case TEAM_OPTION_TYPE_U32:
2376 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
2377 goto nest_cancel;
2378 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
2379 goto nest_cancel;
2380 break;
2381 case TEAM_OPTION_TYPE_STRING:
2382 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
2383 goto nest_cancel;
2384 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
2385 ctx.data.str_val))
2386 goto nest_cancel;
2387 break;
2388 case TEAM_OPTION_TYPE_BINARY:
2389 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
2390 goto nest_cancel;
2391 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
2392 ctx.data.bin_val.ptr))
2393 goto nest_cancel;
2394 break;
2395 case TEAM_OPTION_TYPE_BOOL:
2396 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
2397 goto nest_cancel;
2398 if (ctx.data.bool_val &&
2399 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
2400 goto nest_cancel;
2401 break;
2402 case TEAM_OPTION_TYPE_S32:
2403 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32))
2404 goto nest_cancel;
2405 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val))
2406 goto nest_cancel;
2407 break;
2408 default:
2409 BUG();
2410 }
2411 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
2412 goto nest_cancel;
2413 if (opt_inst->changed) {
2414 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
2415 goto nest_cancel;
2416 opt_inst->changed = false;
2417 }
2418 nla_nest_end(skb, option_item);
2419 return 0;
2420
2421nest_cancel:
2422 nla_nest_cancel(skb, option_item);
2423 return -EMSGSIZE;
2424}
2425
2426static int __send_and_alloc_skb(struct sk_buff **pskb,
2427 struct team *team, u32 portid,
2428 team_nl_send_func_t *send_func)
2429{
2430 int err;
2431
2432 if (*pskb) {
2433 err = send_func(*pskb, team, portid);
2434 if (err)
2435 return err;
2436 }
2437 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2438 if (!*pskb)
2439 return -ENOMEM;
2440 return 0;
2441}
2442
2443static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
2444 int flags, team_nl_send_func_t *send_func,
2445 struct list_head *sel_opt_inst_list)
2446{
2447 struct nlattr *option_list;
2448 struct nlmsghdr *nlh;
2449 void *hdr;
2450 struct team_option_inst *opt_inst;
2451 int err;
2452 struct sk_buff *skb = NULL;
2453 bool incomplete;
2454 int i;
2455
2456 opt_inst = list_first_entry(sel_opt_inst_list,
2457 struct team_option_inst, tmp_list);
2458
2459start_again:
2460 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2461 if (err)
2462 return err;
2463
2464 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2465 TEAM_CMD_OPTIONS_GET);
2466 if (!hdr) {
2467 nlmsg_free(skb);
2468 return -EMSGSIZE;
2469 }
2470
2471 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2472 goto nla_put_failure;
2473 option_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_OPTION);
2474 if (!option_list)
2475 goto nla_put_failure;
2476
2477 i = 0;
2478 incomplete = false;
2479 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
2480 err = team_nl_fill_one_option_get(skb, team, opt_inst);
2481 if (err) {
2482 if (err == -EMSGSIZE) {
2483 if (!i)
2484 goto errout;
2485 incomplete = true;
2486 break;
2487 }
2488 goto errout;
2489 }
2490 i++;
2491 }
2492
2493 nla_nest_end(skb, option_list);
2494 genlmsg_end(skb, hdr);
2495 if (incomplete)
2496 goto start_again;
2497
2498send_done:
2499 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2500 if (!nlh) {
2501 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2502 if (err)
2503 return err;
2504 goto send_done;
2505 }
2506
2507 return send_func(skb, team, portid);
2508
2509nla_put_failure:
2510 err = -EMSGSIZE;
2511errout:
2512 nlmsg_free(skb);
2513 return err;
2514}
2515
2516static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
2517{
2518 struct team *team;
2519 struct team_option_inst *opt_inst;
2520 int err;
2521 LIST_HEAD(sel_opt_inst_list);
2522
2523 team = team_nl_team_get(info);
2524 if (!team)
2525 return -EINVAL;
2526
2527 list_for_each_entry(opt_inst, &team->option_inst_list, list)
2528 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2529 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq,
2530 NLM_F_ACK, team_nl_send_unicast,
2531 &sel_opt_inst_list);
2532
2533 team_nl_team_put(team);
2534
2535 return err;
2536}
2537
2538static int team_nl_send_event_options_get(struct team *team,
2539 struct list_head *sel_opt_inst_list);
2540
2541static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
2542{
2543 struct team *team;
2544 int err = 0;
2545 int i;
2546 struct nlattr *nl_option;
2547
2548 rtnl_lock();
2549
2550 team = team_nl_team_get(info);
2551 if (!team) {
2552 err = -EINVAL;
2553 goto rtnl_unlock;
2554 }
2555
2556 err = -EINVAL;
2557 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
2558 err = -EINVAL;
2559 goto team_put;
2560 }
2561
2562 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
2563 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
2564 struct nlattr *attr;
2565 struct nlattr *attr_data;
2566 LIST_HEAD(opt_inst_list);
2567 enum team_option_type opt_type;
2568 int opt_port_ifindex = 0; /* != 0 for per-port options */
2569 u32 opt_array_index = 0;
2570 bool opt_is_array = false;
2571 struct team_option_inst *opt_inst;
2572 char *opt_name;
2573 bool opt_found = false;
2574
2575 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
2576 err = -EINVAL;
2577 goto team_put;
2578 }
2579 err = nla_parse_nested_deprecated(opt_attrs,
2580 TEAM_ATTR_OPTION_MAX,
2581 nl_option,
2582 team_nl_option_policy,
2583 info->extack);
2584 if (err)
2585 goto team_put;
2586 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
2587 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
2588 err = -EINVAL;
2589 goto team_put;
2590 }
2591 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
2592 case NLA_U32:
2593 opt_type = TEAM_OPTION_TYPE_U32;
2594 break;
2595 case NLA_STRING:
2596 opt_type = TEAM_OPTION_TYPE_STRING;
2597 break;
2598 case NLA_BINARY:
2599 opt_type = TEAM_OPTION_TYPE_BINARY;
2600 break;
2601 case NLA_FLAG:
2602 opt_type = TEAM_OPTION_TYPE_BOOL;
2603 break;
2604 case NLA_S32:
2605 opt_type = TEAM_OPTION_TYPE_S32;
2606 break;
2607 default:
2608 goto team_put;
2609 }
2610
2611 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
2612 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
2613 err = -EINVAL;
2614 goto team_put;
2615 }
2616
2617 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
2618 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
2619 if (attr)
2620 opt_port_ifindex = nla_get_u32(attr);
2621
2622 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
2623 if (attr) {
2624 opt_is_array = true;
2625 opt_array_index = nla_get_u32(attr);
2626 }
2627
2628 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2629 struct team_option *option = opt_inst->option;
2630 struct team_gsetter_ctx ctx;
2631 struct team_option_inst_info *opt_inst_info;
2632 int tmp_ifindex;
2633
2634 opt_inst_info = &opt_inst->info;
2635 tmp_ifindex = opt_inst_info->port ?
2636 opt_inst_info->port->dev->ifindex : 0;
2637 if (option->type != opt_type ||
2638 strcmp(option->name, opt_name) ||
2639 tmp_ifindex != opt_port_ifindex ||
2640 (option->array_size && !opt_is_array) ||
2641 opt_inst_info->array_index != opt_array_index)
2642 continue;
2643 opt_found = true;
2644 ctx.info = opt_inst_info;
2645 switch (opt_type) {
2646 case TEAM_OPTION_TYPE_U32:
2647 ctx.data.u32_val = nla_get_u32(attr_data);
2648 break;
2649 case TEAM_OPTION_TYPE_STRING:
2650 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2651 err = -EINVAL;
2652 goto team_put;
2653 }
2654 ctx.data.str_val = nla_data(attr_data);
2655 break;
2656 case TEAM_OPTION_TYPE_BINARY:
2657 ctx.data.bin_val.len = nla_len(attr_data);
2658 ctx.data.bin_val.ptr = nla_data(attr_data);
2659 break;
2660 case TEAM_OPTION_TYPE_BOOL:
2661 ctx.data.bool_val = attr_data ? true : false;
2662 break;
2663 case TEAM_OPTION_TYPE_S32:
2664 ctx.data.s32_val = nla_get_s32(attr_data);
2665 break;
2666 default:
2667 BUG();
2668 }
2669 err = team_option_set(team, opt_inst, &ctx);
2670 if (err)
2671 goto team_put;
2672 opt_inst->changed = true;
2673 list_add(&opt_inst->tmp_list, &opt_inst_list);
2674 }
2675 if (!opt_found) {
2676 err = -ENOENT;
2677 goto team_put;
2678 }
2679
2680 err = team_nl_send_event_options_get(team, &opt_inst_list);
2681 if (err)
2682 break;
2683 }
2684
2685team_put:
2686 team_nl_team_put(team);
2687rtnl_unlock:
2688 rtnl_unlock();
2689 return err;
2690}
2691
2692static int team_nl_fill_one_port_get(struct sk_buff *skb,
2693 struct team_port *port)
2694{
2695 struct nlattr *port_item;
2696
2697 port_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_PORT);
2698 if (!port_item)
2699 goto nest_cancel;
2700 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2701 goto nest_cancel;
2702 if (port->changed) {
2703 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2704 goto nest_cancel;
2705 port->changed = false;
2706 }
2707 if ((port->removed &&
2708 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2709 (port->state.linkup &&
2710 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2711 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2712 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2713 goto nest_cancel;
2714 nla_nest_end(skb, port_item);
2715 return 0;
2716
2717nest_cancel:
2718 nla_nest_cancel(skb, port_item);
2719 return -EMSGSIZE;
2720}
2721
2722static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,
2723 int flags, team_nl_send_func_t *send_func,
2724 struct team_port *one_port)
2725{
2726 struct nlattr *port_list;
2727 struct nlmsghdr *nlh;
2728 void *hdr;
2729 struct team_port *port;
2730 int err;
2731 struct sk_buff *skb = NULL;
2732 bool incomplete;
2733 int i;
2734
2735 port = list_first_entry_or_null(&team->port_list,
2736 struct team_port, list);
2737
2738start_again:
2739 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2740 if (err)
2741 return err;
2742
2743 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2744 TEAM_CMD_PORT_LIST_GET);
2745 if (!hdr) {
2746 nlmsg_free(skb);
2747 return -EMSGSIZE;
2748 }
2749
2750 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2751 goto nla_put_failure;
2752 port_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_PORT);
2753 if (!port_list)
2754 goto nla_put_failure;
2755
2756 i = 0;
2757 incomplete = false;
2758
2759 /* If one port is selected, called wants to send port list containing
2760 * only this port. Otherwise go through all listed ports and send all
2761 */
2762 if (one_port) {
2763 err = team_nl_fill_one_port_get(skb, one_port);
2764 if (err)
2765 goto errout;
2766 } else if (port) {
2767 list_for_each_entry_from(port, &team->port_list, list) {
2768 err = team_nl_fill_one_port_get(skb, port);
2769 if (err) {
2770 if (err == -EMSGSIZE) {
2771 if (!i)
2772 goto errout;
2773 incomplete = true;
2774 break;
2775 }
2776 goto errout;
2777 }
2778 i++;
2779 }
2780 }
2781
2782 nla_nest_end(skb, port_list);
2783 genlmsg_end(skb, hdr);
2784 if (incomplete)
2785 goto start_again;
2786
2787send_done:
2788 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2789 if (!nlh) {
2790 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2791 if (err)
2792 return err;
2793 goto send_done;
2794 }
2795
2796 return send_func(skb, team, portid);
2797
2798nla_put_failure:
2799 err = -EMSGSIZE;
2800errout:
2801 nlmsg_free(skb);
2802 return err;
2803}
2804
2805static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2806 struct genl_info *info)
2807{
2808 struct team *team;
2809 int err;
2810
2811 team = team_nl_team_get(info);
2812 if (!team)
2813 return -EINVAL;
2814
2815 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq,
2816 NLM_F_ACK, team_nl_send_unicast, NULL);
2817
2818 team_nl_team_put(team);
2819
2820 return err;
2821}
2822
2823static const struct genl_small_ops team_nl_ops[] = {
2824 {
2825 .cmd = TEAM_CMD_NOOP,
2826 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2827 .doit = team_nl_cmd_noop,
2828 },
2829 {
2830 .cmd = TEAM_CMD_OPTIONS_SET,
2831 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2832 .doit = team_nl_cmd_options_set,
2833 .flags = GENL_ADMIN_PERM,
2834 },
2835 {
2836 .cmd = TEAM_CMD_OPTIONS_GET,
2837 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2838 .doit = team_nl_cmd_options_get,
2839 .flags = GENL_ADMIN_PERM,
2840 },
2841 {
2842 .cmd = TEAM_CMD_PORT_LIST_GET,
2843 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2844 .doit = team_nl_cmd_port_list_get,
2845 .flags = GENL_ADMIN_PERM,
2846 },
2847};
2848
2849static const struct genl_multicast_group team_nl_mcgrps[] = {
2850 { .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, },
2851};
2852
2853static struct genl_family team_nl_family __ro_after_init = {
2854 .name = TEAM_GENL_NAME,
2855 .version = TEAM_GENL_VERSION,
2856 .maxattr = TEAM_ATTR_MAX,
2857 .policy = team_nl_policy,
2858 .netnsok = true,
2859 .module = THIS_MODULE,
2860 .small_ops = team_nl_ops,
2861 .n_small_ops = ARRAY_SIZE(team_nl_ops),
2862 .resv_start_op = TEAM_CMD_PORT_LIST_GET + 1,
2863 .mcgrps = team_nl_mcgrps,
2864 .n_mcgrps = ARRAY_SIZE(team_nl_mcgrps),
2865};
2866
2867static int team_nl_send_multicast(struct sk_buff *skb,
2868 struct team *team, u32 portid)
2869{
2870 return genlmsg_multicast_netns(&team_nl_family, dev_net(team->dev),
2871 skb, 0, 0, GFP_KERNEL);
2872}
2873
2874static int team_nl_send_event_options_get(struct team *team,
2875 struct list_head *sel_opt_inst_list)
2876{
2877 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2878 sel_opt_inst_list);
2879}
2880
2881static int team_nl_send_event_port_get(struct team *team,
2882 struct team_port *port)
2883{
2884 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast,
2885 port);
2886}
2887
2888static int __init team_nl_init(void)
2889{
2890 return genl_register_family(&team_nl_family);
2891}
2892
2893static void __exit team_nl_fini(void)
2894{
2895 genl_unregister_family(&team_nl_family);
2896}
2897
2898
2899/******************
2900 * Change checkers
2901 ******************/
2902
2903static void __team_options_change_check(struct team *team)
2904{
2905 int err;
2906 struct team_option_inst *opt_inst;
2907 LIST_HEAD(sel_opt_inst_list);
2908
2909 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2910 if (opt_inst->changed)
2911 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2912 }
2913 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
2914 if (err && err != -ESRCH)
2915 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2916 err);
2917}
2918
2919/* rtnl lock is held */
2920
2921static void __team_port_change_send(struct team_port *port, bool linkup)
2922{
2923 int err;
2924
2925 port->changed = true;
2926 port->state.linkup = linkup;
2927 team_refresh_port_linkup(port);
2928 if (linkup) {
2929 struct ethtool_link_ksettings ecmd;
2930
2931 err = __ethtool_get_link_ksettings(port->dev, &ecmd);
2932 if (!err) {
2933 port->state.speed = ecmd.base.speed;
2934 port->state.duplex = ecmd.base.duplex;
2935 goto send_event;
2936 }
2937 }
2938 port->state.speed = 0;
2939 port->state.duplex = 0;
2940
2941send_event:
2942 err = team_nl_send_event_port_get(port->team, port);
2943 if (err && err != -ESRCH)
2944 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
2945 port->dev->name, err);
2946
2947}
2948
2949static void __team_carrier_check(struct team *team)
2950{
2951 struct team_port *port;
2952 bool team_linkup;
2953
2954 if (team->user_carrier_enabled)
2955 return;
2956
2957 team_linkup = false;
2958 list_for_each_entry(port, &team->port_list, list) {
2959 if (port->linkup) {
2960 team_linkup = true;
2961 break;
2962 }
2963 }
2964
2965 if (team_linkup)
2966 netif_carrier_on(team->dev);
2967 else
2968 netif_carrier_off(team->dev);
2969}
2970
2971static void __team_port_change_check(struct team_port *port, bool linkup)
2972{
2973 if (port->state.linkup != linkup)
2974 __team_port_change_send(port, linkup);
2975 __team_carrier_check(port->team);
2976}
2977
2978static void __team_port_change_port_added(struct team_port *port, bool linkup)
2979{
2980 __team_port_change_send(port, linkup);
2981 __team_carrier_check(port->team);
2982}
2983
2984static void __team_port_change_port_removed(struct team_port *port)
2985{
2986 port->removed = true;
2987 __team_port_change_send(port, false);
2988 __team_carrier_check(port->team);
2989}
2990
2991static void team_port_change_check(struct team_port *port, bool linkup)
2992{
2993 struct team *team = port->team;
2994
2995 mutex_lock(&team->lock);
2996 __team_port_change_check(port, linkup);
2997 mutex_unlock(&team->lock);
2998}
2999
3000
3001/************************************
3002 * Net device notifier event handler
3003 ************************************/
3004
3005static int team_device_event(struct notifier_block *unused,
3006 unsigned long event, void *ptr)
3007{
3008 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
3009 struct team_port *port;
3010
3011 port = team_port_get_rtnl(dev);
3012 if (!port)
3013 return NOTIFY_DONE;
3014
3015 switch (event) {
3016 case NETDEV_UP:
3017 if (netif_oper_up(dev))
3018 team_port_change_check(port, true);
3019 break;
3020 case NETDEV_DOWN:
3021 team_port_change_check(port, false);
3022 break;
3023 case NETDEV_CHANGE:
3024 if (netif_running(port->dev))
3025 team_port_change_check(port,
3026 !!netif_oper_up(port->dev));
3027 break;
3028 case NETDEV_UNREGISTER:
3029 team_del_slave(port->team->dev, dev);
3030 break;
3031 case NETDEV_FEAT_CHANGE:
3032 if (!port->team->notifier_ctx) {
3033 port->team->notifier_ctx = true;
3034 team_compute_features(port->team);
3035 port->team->notifier_ctx = false;
3036 }
3037 break;
3038 case NETDEV_PRECHANGEMTU:
3039 /* Forbid to change mtu of underlaying device */
3040 if (!port->team->port_mtu_change_allowed)
3041 return NOTIFY_BAD;
3042 break;
3043 case NETDEV_PRE_TYPE_CHANGE:
3044 /* Forbid to change type of underlaying device */
3045 return NOTIFY_BAD;
3046 case NETDEV_RESEND_IGMP:
3047 /* Propagate to master device */
3048 call_netdevice_notifiers(event, port->team->dev);
3049 break;
3050 }
3051 return NOTIFY_DONE;
3052}
3053
3054static struct notifier_block team_notifier_block __read_mostly = {
3055 .notifier_call = team_device_event,
3056};
3057
3058
3059/***********************
3060 * Module init and exit
3061 ***********************/
3062
3063static int __init team_module_init(void)
3064{
3065 int err;
3066
3067 register_netdevice_notifier(&team_notifier_block);
3068
3069 err = rtnl_link_register(&team_link_ops);
3070 if (err)
3071 goto err_rtnl_reg;
3072
3073 err = team_nl_init();
3074 if (err)
3075 goto err_nl_init;
3076
3077 return 0;
3078
3079err_nl_init:
3080 rtnl_link_unregister(&team_link_ops);
3081
3082err_rtnl_reg:
3083 unregister_netdevice_notifier(&team_notifier_block);
3084
3085 return err;
3086}
3087
3088static void __exit team_module_exit(void)
3089{
3090 team_nl_fini();
3091 rtnl_link_unregister(&team_link_ops);
3092 unregister_netdevice_notifier(&team_notifier_block);
3093}
3094
3095module_init(team_module_init);
3096module_exit(team_module_exit);
3097
3098MODULE_LICENSE("GPL v2");
3099MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
3100MODULE_DESCRIPTION("Ethernet team device driver");
3101MODULE_ALIAS_RTNL_LINK(DRV_NAME);