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11#include <linux/kernel.h>
12#include <linux/types.h>
13#include <linux/module.h>
14#include <linux/init.h>
15#include <linux/slab.h>
16#include <linux/rcupdate.h>
17#include <linux/errno.h>
18#include <linux/ctype.h>
19#include <linux/notifier.h>
20#include <linux/netdevice.h>
21#include <linux/netpoll.h>
22#include <linux/if_vlan.h>
23#include <linux/if_arp.h>
24#include <linux/socket.h>
25#include <linux/etherdevice.h>
26#include <linux/rtnetlink.h>
27#include <net/rtnetlink.h>
28#include <net/genetlink.h>
29#include <net/netlink.h>
30#include <net/sch_generic.h>
31#include <linux/if_team.h>
32
33#define DRV_NAME "team"
34
35
36
37
38
39
40#define team_port_exists(dev) (dev->priv_flags & IFF_TEAM_PORT)
41
42static struct team_port *team_port_get_rcu(const struct net_device *dev)
43{
44 struct team_port *port = rcu_dereference(dev->rx_handler_data);
45
46 return team_port_exists(dev) ? port : NULL;
47}
48
49static struct team_port *team_port_get_rtnl(const struct net_device *dev)
50{
51 struct team_port *port = rtnl_dereference(dev->rx_handler_data);
52
53 return team_port_exists(dev) ? port : NULL;
54}
55
56
57
58
59
60static int __set_port_dev_addr(struct net_device *port_dev,
61 const unsigned char *dev_addr)
62{
63 struct sockaddr addr;
64
65 memcpy(addr.sa_data, dev_addr, port_dev->addr_len);
66 addr.sa_family = port_dev->type;
67 return dev_set_mac_address(port_dev, &addr);
68}
69
70static int team_port_set_orig_dev_addr(struct team_port *port)
71{
72 return __set_port_dev_addr(port->dev, port->orig.dev_addr);
73}
74
75int team_port_set_team_dev_addr(struct team_port *port)
76{
77 return __set_port_dev_addr(port->dev, port->team->dev->dev_addr);
78}
79EXPORT_SYMBOL(team_port_set_team_dev_addr);
80
81static void team_refresh_port_linkup(struct team_port *port)
82{
83 port->linkup = port->user.linkup_enabled ? port->user.linkup :
84 port->state.linkup;
85}
86
87
88
89
90
91
92struct team_option_inst {
93 struct list_head list;
94 struct list_head tmp_list;
95 struct team_option *option;
96 struct team_option_inst_info info;
97 bool changed;
98 bool removed;
99};
100
101static struct team_option *__team_find_option(struct team *team,
102 const char *opt_name)
103{
104 struct team_option *option;
105
106 list_for_each_entry(option, &team->option_list, list) {
107 if (strcmp(option->name, opt_name) == 0)
108 return option;
109 }
110 return NULL;
111}
112
113static void __team_option_inst_del(struct team_option_inst *opt_inst)
114{
115 list_del(&opt_inst->list);
116 kfree(opt_inst);
117}
118
119static void __team_option_inst_del_option(struct team *team,
120 struct team_option *option)
121{
122 struct team_option_inst *opt_inst, *tmp;
123
124 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
125 if (opt_inst->option == option)
126 __team_option_inst_del(opt_inst);
127 }
128}
129
130static int __team_option_inst_add(struct team *team, struct team_option *option,
131 struct team_port *port)
132{
133 struct team_option_inst *opt_inst;
134 unsigned int array_size;
135 unsigned int i;
136 int err;
137
138 array_size = option->array_size;
139 if (!array_size)
140 array_size = 1;
141
142 for (i = 0; i < array_size; i++) {
143 opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL);
144 if (!opt_inst)
145 return -ENOMEM;
146 opt_inst->option = option;
147 opt_inst->info.port = port;
148 opt_inst->info.array_index = i;
149 opt_inst->changed = true;
150 opt_inst->removed = false;
151 list_add_tail(&opt_inst->list, &team->option_inst_list);
152 if (option->init) {
153 err = option->init(team, &opt_inst->info);
154 if (err)
155 return err;
156 }
157
158 }
159 return 0;
160}
161
162static int __team_option_inst_add_option(struct team *team,
163 struct team_option *option)
164{
165 struct team_port *port;
166 int err;
167
168 if (!option->per_port) {
169 err = __team_option_inst_add(team, option, NULL);
170 if (err)
171 goto inst_del_option;
172 }
173
174 list_for_each_entry(port, &team->port_list, list) {
175 err = __team_option_inst_add(team, option, port);
176 if (err)
177 goto inst_del_option;
178 }
179 return 0;
180
181inst_del_option:
182 __team_option_inst_del_option(team, option);
183 return err;
184}
185
186static void __team_option_inst_mark_removed_option(struct team *team,
187 struct team_option *option)
188{
189 struct team_option_inst *opt_inst;
190
191 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
192 if (opt_inst->option == option) {
193 opt_inst->changed = true;
194 opt_inst->removed = true;
195 }
196 }
197}
198
199static void __team_option_inst_del_port(struct team *team,
200 struct team_port *port)
201{
202 struct team_option_inst *opt_inst, *tmp;
203
204 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
205 if (opt_inst->option->per_port &&
206 opt_inst->info.port == port)
207 __team_option_inst_del(opt_inst);
208 }
209}
210
211static int __team_option_inst_add_port(struct team *team,
212 struct team_port *port)
213{
214 struct team_option *option;
215 int err;
216
217 list_for_each_entry(option, &team->option_list, list) {
218 if (!option->per_port)
219 continue;
220 err = __team_option_inst_add(team, option, port);
221 if (err)
222 goto inst_del_port;
223 }
224 return 0;
225
226inst_del_port:
227 __team_option_inst_del_port(team, port);
228 return err;
229}
230
231static void __team_option_inst_mark_removed_port(struct team *team,
232 struct team_port *port)
233{
234 struct team_option_inst *opt_inst;
235
236 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
237 if (opt_inst->info.port == port) {
238 opt_inst->changed = true;
239 opt_inst->removed = true;
240 }
241 }
242}
243
244static int __team_options_register(struct team *team,
245 const struct team_option *option,
246 size_t option_count)
247{
248 int i;
249 struct team_option **dst_opts;
250 int err;
251
252 dst_opts = kzalloc(sizeof(struct team_option *) * option_count,
253 GFP_KERNEL);
254 if (!dst_opts)
255 return -ENOMEM;
256 for (i = 0; i < option_count; i++, option++) {
257 if (__team_find_option(team, option->name)) {
258 err = -EEXIST;
259 goto alloc_rollback;
260 }
261 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL);
262 if (!dst_opts[i]) {
263 err = -ENOMEM;
264 goto alloc_rollback;
265 }
266 }
267
268 for (i = 0; i < option_count; i++) {
269 err = __team_option_inst_add_option(team, dst_opts[i]);
270 if (err)
271 goto inst_rollback;
272 list_add_tail(&dst_opts[i]->list, &team->option_list);
273 }
274
275 kfree(dst_opts);
276 return 0;
277
278inst_rollback:
279 for (i--; i >= 0; i--)
280 __team_option_inst_del_option(team, dst_opts[i]);
281
282 i = option_count - 1;
283alloc_rollback:
284 for (i--; i >= 0; i--)
285 kfree(dst_opts[i]);
286
287 kfree(dst_opts);
288 return err;
289}
290
291static void __team_options_mark_removed(struct team *team,
292 const struct team_option *option,
293 size_t option_count)
294{
295 int i;
296
297 for (i = 0; i < option_count; i++, option++) {
298 struct team_option *del_opt;
299
300 del_opt = __team_find_option(team, option->name);
301 if (del_opt)
302 __team_option_inst_mark_removed_option(team, del_opt);
303 }
304}
305
306static void __team_options_unregister(struct team *team,
307 const struct team_option *option,
308 size_t option_count)
309{
310 int i;
311
312 for (i = 0; i < option_count; i++, option++) {
313 struct team_option *del_opt;
314
315 del_opt = __team_find_option(team, option->name);
316 if (del_opt) {
317 __team_option_inst_del_option(team, del_opt);
318 list_del(&del_opt->list);
319 kfree(del_opt);
320 }
321 }
322}
323
324static void __team_options_change_check(struct team *team);
325
326int team_options_register(struct team *team,
327 const struct team_option *option,
328 size_t option_count)
329{
330 int err;
331
332 err = __team_options_register(team, option, option_count);
333 if (err)
334 return err;
335 __team_options_change_check(team);
336 return 0;
337}
338EXPORT_SYMBOL(team_options_register);
339
340void team_options_unregister(struct team *team,
341 const struct team_option *option,
342 size_t option_count)
343{
344 __team_options_mark_removed(team, option, option_count);
345 __team_options_change_check(team);
346 __team_options_unregister(team, option, option_count);
347}
348EXPORT_SYMBOL(team_options_unregister);
349
350static int team_option_get(struct team *team,
351 struct team_option_inst *opt_inst,
352 struct team_gsetter_ctx *ctx)
353{
354 if (!opt_inst->option->getter)
355 return -EOPNOTSUPP;
356 return opt_inst->option->getter(team, ctx);
357}
358
359static int team_option_set(struct team *team,
360 struct team_option_inst *opt_inst,
361 struct team_gsetter_ctx *ctx)
362{
363 if (!opt_inst->option->setter)
364 return -EOPNOTSUPP;
365 return opt_inst->option->setter(team, ctx);
366}
367
368void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info)
369{
370 struct team_option_inst *opt_inst;
371
372 opt_inst = container_of(opt_inst_info, struct team_option_inst, info);
373 opt_inst->changed = true;
374}
375EXPORT_SYMBOL(team_option_inst_set_change);
376
377void team_options_change_check(struct team *team)
378{
379 __team_options_change_check(team);
380}
381EXPORT_SYMBOL(team_options_change_check);
382
383
384
385
386
387
388static LIST_HEAD(mode_list);
389static DEFINE_SPINLOCK(mode_list_lock);
390
391struct team_mode_item {
392 struct list_head list;
393 const struct team_mode *mode;
394};
395
396static struct team_mode_item *__find_mode(const char *kind)
397{
398 struct team_mode_item *mitem;
399
400 list_for_each_entry(mitem, &mode_list, list) {
401 if (strcmp(mitem->mode->kind, kind) == 0)
402 return mitem;
403 }
404 return NULL;
405}
406
407static bool is_good_mode_name(const char *name)
408{
409 while (*name != '\0') {
410 if (!isalpha(*name) && !isdigit(*name) && *name != '_')
411 return false;
412 name++;
413 }
414 return true;
415}
416
417int team_mode_register(const struct team_mode *mode)
418{
419 int err = 0;
420 struct team_mode_item *mitem;
421
422 if (!is_good_mode_name(mode->kind) ||
423 mode->priv_size > TEAM_MODE_PRIV_SIZE)
424 return -EINVAL;
425
426 mitem = kmalloc(sizeof(*mitem), GFP_KERNEL);
427 if (!mitem)
428 return -ENOMEM;
429
430 spin_lock(&mode_list_lock);
431 if (__find_mode(mode->kind)) {
432 err = -EEXIST;
433 kfree(mitem);
434 goto unlock;
435 }
436 mitem->mode = mode;
437 list_add_tail(&mitem->list, &mode_list);
438unlock:
439 spin_unlock(&mode_list_lock);
440 return err;
441}
442EXPORT_SYMBOL(team_mode_register);
443
444void team_mode_unregister(const struct team_mode *mode)
445{
446 struct team_mode_item *mitem;
447
448 spin_lock(&mode_list_lock);
449 mitem = __find_mode(mode->kind);
450 if (mitem) {
451 list_del_init(&mitem->list);
452 kfree(mitem);
453 }
454 spin_unlock(&mode_list_lock);
455}
456EXPORT_SYMBOL(team_mode_unregister);
457
458static const struct team_mode *team_mode_get(const char *kind)
459{
460 struct team_mode_item *mitem;
461 const struct team_mode *mode = NULL;
462
463 spin_lock(&mode_list_lock);
464 mitem = __find_mode(kind);
465 if (!mitem) {
466 spin_unlock(&mode_list_lock);
467 request_module("team-mode-%s", kind);
468 spin_lock(&mode_list_lock);
469 mitem = __find_mode(kind);
470 }
471 if (mitem) {
472 mode = mitem->mode;
473 if (!try_module_get(mode->owner))
474 mode = NULL;
475 }
476
477 spin_unlock(&mode_list_lock);
478 return mode;
479}
480
481static void team_mode_put(const struct team_mode *mode)
482{
483 module_put(mode->owner);
484}
485
486static bool team_dummy_transmit(struct team *team, struct sk_buff *skb)
487{
488 dev_kfree_skb_any(skb);
489 return false;
490}
491
492rx_handler_result_t team_dummy_receive(struct team *team,
493 struct team_port *port,
494 struct sk_buff *skb)
495{
496 return RX_HANDLER_ANOTHER;
497}
498
499static const struct team_mode __team_no_mode = {
500 .kind = "*NOMODE*",
501};
502
503static bool team_is_mode_set(struct team *team)
504{
505 return team->mode != &__team_no_mode;
506}
507
508static void team_set_no_mode(struct team *team)
509{
510 team->mode = &__team_no_mode;
511}
512
513static void __team_adjust_ops(struct team *team, int en_port_count)
514{
515
516
517
518
519
520 if (!en_port_count || !team_is_mode_set(team) ||
521 !team->mode->ops->transmit)
522 team->ops.transmit = team_dummy_transmit;
523 else
524 team->ops.transmit = team->mode->ops->transmit;
525
526 if (!en_port_count || !team_is_mode_set(team) ||
527 !team->mode->ops->receive)
528 team->ops.receive = team_dummy_receive;
529 else
530 team->ops.receive = team->mode->ops->receive;
531}
532
533static void team_adjust_ops(struct team *team)
534{
535 __team_adjust_ops(team, team->en_port_count);
536}
537
538
539
540
541
542
543static int __team_change_mode(struct team *team,
544 const struct team_mode *new_mode)
545{
546
547 if (team_is_mode_set(team)) {
548 void (*exit_op)(struct team *team) = team->ops.exit;
549
550
551 memset(&team->ops, 0, sizeof(struct team_mode_ops));
552 team_adjust_ops(team);
553
554 if (exit_op)
555 exit_op(team);
556 team_mode_put(team->mode);
557 team_set_no_mode(team);
558
559 memset(&team->mode_priv, 0,
560 sizeof(struct team) - offsetof(struct team, mode_priv));
561 }
562
563 if (!new_mode)
564 return 0;
565
566 if (new_mode->ops->init) {
567 int err;
568
569 err = new_mode->ops->init(team);
570 if (err)
571 return err;
572 }
573
574 team->mode = new_mode;
575 memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops));
576 team_adjust_ops(team);
577
578 return 0;
579}
580
581static int team_change_mode(struct team *team, const char *kind)
582{
583 const struct team_mode *new_mode;
584 struct net_device *dev = team->dev;
585 int err;
586
587 if (!list_empty(&team->port_list)) {
588 netdev_err(dev, "No ports can be present during mode change\n");
589 return -EBUSY;
590 }
591
592 if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) {
593 netdev_err(dev, "Unable to change to the same mode the team is in\n");
594 return -EINVAL;
595 }
596
597 new_mode = team_mode_get(kind);
598 if (!new_mode) {
599 netdev_err(dev, "Mode \"%s\" not found\n", kind);
600 return -EINVAL;
601 }
602
603 err = __team_change_mode(team, new_mode);
604 if (err) {
605 netdev_err(dev, "Failed to change to mode \"%s\"\n", kind);
606 team_mode_put(new_mode);
607 return err;
608 }
609
610 netdev_info(dev, "Mode changed to \"%s\"\n", kind);
611 return 0;
612}
613
614
615
616
617
618
619
620static rx_handler_result_t team_handle_frame(struct sk_buff **pskb)
621{
622 struct sk_buff *skb = *pskb;
623 struct team_port *port;
624 struct team *team;
625 rx_handler_result_t res;
626
627 skb = skb_share_check(skb, GFP_ATOMIC);
628 if (!skb)
629 return RX_HANDLER_CONSUMED;
630
631 *pskb = skb;
632
633 port = team_port_get_rcu(skb->dev);
634 team = port->team;
635 if (!team_port_enabled(port)) {
636
637 res = RX_HANDLER_EXACT;
638 } else {
639 res = team->ops.receive(team, port, skb);
640 }
641 if (res == RX_HANDLER_ANOTHER) {
642 struct team_pcpu_stats *pcpu_stats;
643
644 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
645 u64_stats_update_begin(&pcpu_stats->syncp);
646 pcpu_stats->rx_packets++;
647 pcpu_stats->rx_bytes += skb->len;
648 if (skb->pkt_type == PACKET_MULTICAST)
649 pcpu_stats->rx_multicast++;
650 u64_stats_update_end(&pcpu_stats->syncp);
651
652 skb->dev = team->dev;
653 } else {
654 this_cpu_inc(team->pcpu_stats->rx_dropped);
655 }
656
657 return res;
658}
659
660
661
662
663
664
665static int team_queue_override_init(struct team *team)
666{
667 struct list_head *listarr;
668 unsigned int queue_cnt = team->dev->num_tx_queues - 1;
669 unsigned int i;
670
671 if (!queue_cnt)
672 return 0;
673 listarr = kmalloc(sizeof(struct list_head) * queue_cnt, GFP_KERNEL);
674 if (!listarr)
675 return -ENOMEM;
676 team->qom_lists = listarr;
677 for (i = 0; i < queue_cnt; i++)
678 INIT_LIST_HEAD(listarr++);
679 return 0;
680}
681
682static void team_queue_override_fini(struct team *team)
683{
684 kfree(team->qom_lists);
685}
686
687static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id)
688{
689 return &team->qom_lists[queue_id - 1];
690}
691
692
693
694
695static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb)
696{
697 struct list_head *qom_list;
698 struct team_port *port;
699
700 if (!team->queue_override_enabled || !skb->queue_mapping)
701 return false;
702 qom_list = __team_get_qom_list(team, skb->queue_mapping);
703 list_for_each_entry_rcu(port, qom_list, qom_list) {
704 if (!team_dev_queue_xmit(team, port, skb))
705 return true;
706 }
707 return false;
708}
709
710static void __team_queue_override_port_del(struct team *team,
711 struct team_port *port)
712{
713 list_del_rcu(&port->qom_list);
714 synchronize_rcu();
715 INIT_LIST_HEAD(&port->qom_list);
716}
717
718static bool team_queue_override_port_has_gt_prio_than(struct team_port *port,
719 struct team_port *cur)
720{
721 if (port->priority < cur->priority)
722 return true;
723 if (port->priority > cur->priority)
724 return false;
725 if (port->index < cur->index)
726 return true;
727 return false;
728}
729
730static void __team_queue_override_port_add(struct team *team,
731 struct team_port *port)
732{
733 struct team_port *cur;
734 struct list_head *qom_list;
735 struct list_head *node;
736
737 if (!port->queue_id || !team_port_enabled(port))
738 return;
739
740 qom_list = __team_get_qom_list(team, port->queue_id);
741 node = qom_list;
742 list_for_each_entry(cur, qom_list, qom_list) {
743 if (team_queue_override_port_has_gt_prio_than(port, cur))
744 break;
745 node = &cur->qom_list;
746 }
747 list_add_tail_rcu(&port->qom_list, node);
748}
749
750static void __team_queue_override_enabled_check(struct team *team)
751{
752 struct team_port *port;
753 bool enabled = false;
754
755 list_for_each_entry(port, &team->port_list, list) {
756 if (!list_empty(&port->qom_list)) {
757 enabled = true;
758 break;
759 }
760 }
761 if (enabled == team->queue_override_enabled)
762 return;
763 netdev_dbg(team->dev, "%s queue override\n",
764 enabled ? "Enabling" : "Disabling");
765 team->queue_override_enabled = enabled;
766}
767
768static void team_queue_override_port_refresh(struct team *team,
769 struct team_port *port)
770{
771 __team_queue_override_port_del(team, port);
772 __team_queue_override_port_add(team, port);
773 __team_queue_override_enabled_check(team);
774}
775
776
777
778
779
780
781static bool team_port_find(const struct team *team,
782 const struct team_port *port)
783{
784 struct team_port *cur;
785
786 list_for_each_entry(cur, &team->port_list, list)
787 if (cur == port)
788 return true;
789 return false;
790}
791
792
793
794
795
796
797
798static void team_port_enable(struct team *team,
799 struct team_port *port)
800{
801 if (team_port_enabled(port))
802 return;
803 port->index = team->en_port_count++;
804 hlist_add_head_rcu(&port->hlist,
805 team_port_index_hash(team, port->index));
806 team_adjust_ops(team);
807 team_queue_override_port_refresh(team, port);
808 if (team->ops.port_enabled)
809 team->ops.port_enabled(team, port);
810}
811
812static void __reconstruct_port_hlist(struct team *team, int rm_index)
813{
814 int i;
815 struct team_port *port;
816
817 for (i = rm_index + 1; i < team->en_port_count; i++) {
818 port = team_get_port_by_index(team, i);
819 hlist_del_rcu(&port->hlist);
820 port->index--;
821 hlist_add_head_rcu(&port->hlist,
822 team_port_index_hash(team, port->index));
823 }
824}
825
826static void team_port_disable(struct team *team,
827 struct team_port *port)
828{
829 if (!team_port_enabled(port))
830 return;
831 if (team->ops.port_disabled)
832 team->ops.port_disabled(team, port);
833 hlist_del_rcu(&port->hlist);
834 __reconstruct_port_hlist(team, port->index);
835 port->index = -1;
836 team_queue_override_port_refresh(team, port);
837 __team_adjust_ops(team, team->en_port_count - 1);
838
839
840
841
842 synchronize_rcu();
843 team->en_port_count--;
844}
845
846#define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \
847 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
848 NETIF_F_HIGHDMA | NETIF_F_LRO)
849
850static void __team_compute_features(struct team *team)
851{
852 struct team_port *port;
853 u32 vlan_features = TEAM_VLAN_FEATURES;
854 unsigned short max_hard_header_len = ETH_HLEN;
855 unsigned int flags, dst_release_flag = IFF_XMIT_DST_RELEASE;
856
857 list_for_each_entry(port, &team->port_list, list) {
858 vlan_features = netdev_increment_features(vlan_features,
859 port->dev->vlan_features,
860 TEAM_VLAN_FEATURES);
861
862 dst_release_flag &= port->dev->priv_flags;
863 if (port->dev->hard_header_len > max_hard_header_len)
864 max_hard_header_len = port->dev->hard_header_len;
865 }
866
867 team->dev->vlan_features = vlan_features;
868 team->dev->hard_header_len = max_hard_header_len;
869
870 flags = team->dev->priv_flags & ~IFF_XMIT_DST_RELEASE;
871 team->dev->priv_flags = flags | dst_release_flag;
872
873 netdev_change_features(team->dev);
874}
875
876static void team_compute_features(struct team *team)
877{
878 mutex_lock(&team->lock);
879 __team_compute_features(team);
880 mutex_unlock(&team->lock);
881}
882
883static int team_port_enter(struct team *team, struct team_port *port)
884{
885 int err = 0;
886
887 dev_hold(team->dev);
888 port->dev->priv_flags |= IFF_TEAM_PORT;
889 if (team->ops.port_enter) {
890 err = team->ops.port_enter(team, port);
891 if (err) {
892 netdev_err(team->dev, "Device %s failed to enter team mode\n",
893 port->dev->name);
894 goto err_port_enter;
895 }
896 }
897
898 return 0;
899
900err_port_enter:
901 port->dev->priv_flags &= ~IFF_TEAM_PORT;
902 dev_put(team->dev);
903
904 return err;
905}
906
907static void team_port_leave(struct team *team, struct team_port *port)
908{
909 if (team->ops.port_leave)
910 team->ops.port_leave(team, port);
911 port->dev->priv_flags &= ~IFF_TEAM_PORT;
912 dev_put(team->dev);
913}
914
915#ifdef CONFIG_NET_POLL_CONTROLLER
916static int team_port_enable_netpoll(struct team *team, struct team_port *port,
917 gfp_t gfp)
918{
919 struct netpoll *np;
920 int err;
921
922 np = kzalloc(sizeof(*np), gfp);
923 if (!np)
924 return -ENOMEM;
925
926 err = __netpoll_setup(np, port->dev, gfp);
927 if (err) {
928 kfree(np);
929 return err;
930 }
931 port->np = np;
932 return err;
933}
934
935static void team_port_disable_netpoll(struct team_port *port)
936{
937 struct netpoll *np = port->np;
938
939 if (!np)
940 return;
941 port->np = NULL;
942
943
944 synchronize_rcu_bh();
945 __netpoll_cleanup(np);
946 kfree(np);
947}
948
949static struct netpoll_info *team_netpoll_info(struct team *team)
950{
951 return team->dev->npinfo;
952}
953
954#else
955static int team_port_enable_netpoll(struct team *team, struct team_port *port,
956 gfp_t gfp)
957{
958 return 0;
959}
960static void team_port_disable_netpoll(struct team_port *port)
961{
962}
963static struct netpoll_info *team_netpoll_info(struct team *team)
964{
965 return NULL;
966}
967#endif
968
969static void __team_port_change_port_added(struct team_port *port, bool linkup);
970static int team_dev_type_check_change(struct net_device *dev,
971 struct net_device *port_dev);
972
973static int team_port_add(struct team *team, struct net_device *port_dev)
974{
975 struct net_device *dev = team->dev;
976 struct team_port *port;
977 char *portname = port_dev->name;
978 int err;
979
980 if (port_dev->flags & IFF_LOOPBACK) {
981 netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n",
982 portname);
983 return -EINVAL;
984 }
985
986 if (team_port_exists(port_dev)) {
987 netdev_err(dev, "Device %s is already a port "
988 "of a team device\n", portname);
989 return -EBUSY;
990 }
991
992 if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
993 vlan_uses_dev(dev)) {
994 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
995 portname);
996 return -EPERM;
997 }
998
999 err = team_dev_type_check_change(dev, port_dev);
1000 if (err)
1001 return err;
1002
1003 if (port_dev->flags & IFF_UP) {
1004 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
1005 portname);
1006 return -EBUSY;
1007 }
1008
1009 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size,
1010 GFP_KERNEL);
1011 if (!port)
1012 return -ENOMEM;
1013
1014 port->dev = port_dev;
1015 port->team = team;
1016 INIT_LIST_HEAD(&port->qom_list);
1017
1018 port->orig.mtu = port_dev->mtu;
1019 err = dev_set_mtu(port_dev, dev->mtu);
1020 if (err) {
1021 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
1022 goto err_set_mtu;
1023 }
1024
1025 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len);
1026
1027 err = team_port_enter(team, port);
1028 if (err) {
1029 netdev_err(dev, "Device %s failed to enter team mode\n",
1030 portname);
1031 goto err_port_enter;
1032 }
1033
1034 err = dev_open(port_dev);
1035 if (err) {
1036 netdev_dbg(dev, "Device %s opening failed\n",
1037 portname);
1038 goto err_dev_open;
1039 }
1040
1041 err = vlan_vids_add_by_dev(port_dev, dev);
1042 if (err) {
1043 netdev_err(dev, "Failed to add vlan ids to device %s\n",
1044 portname);
1045 goto err_vids_add;
1046 }
1047
1048 if (team_netpoll_info(team)) {
1049 err = team_port_enable_netpoll(team, port, GFP_KERNEL);
1050 if (err) {
1051 netdev_err(dev, "Failed to enable netpoll on device %s\n",
1052 portname);
1053 goto err_enable_netpoll;
1054 }
1055 }
1056
1057 err = netdev_set_master(port_dev, dev);
1058 if (err) {
1059 netdev_err(dev, "Device %s failed to set master\n", portname);
1060 goto err_set_master;
1061 }
1062
1063 err = netdev_rx_handler_register(port_dev, team_handle_frame,
1064 port);
1065 if (err) {
1066 netdev_err(dev, "Device %s failed to register rx_handler\n",
1067 portname);
1068 goto err_handler_register;
1069 }
1070
1071 err = __team_option_inst_add_port(team, port);
1072 if (err) {
1073 netdev_err(dev, "Device %s failed to add per-port options\n",
1074 portname);
1075 goto err_option_port_add;
1076 }
1077
1078 port->index = -1;
1079 team_port_enable(team, port);
1080 list_add_tail_rcu(&port->list, &team->port_list);
1081 __team_compute_features(team);
1082 __team_port_change_port_added(port, !!netif_carrier_ok(port_dev));
1083 __team_options_change_check(team);
1084
1085 netdev_info(dev, "Port device %s added\n", portname);
1086
1087 return 0;
1088
1089err_option_port_add:
1090 netdev_rx_handler_unregister(port_dev);
1091
1092err_handler_register:
1093 netdev_set_master(port_dev, NULL);
1094
1095err_set_master:
1096 team_port_disable_netpoll(port);
1097
1098err_enable_netpoll:
1099 vlan_vids_del_by_dev(port_dev, dev);
1100
1101err_vids_add:
1102 dev_close(port_dev);
1103
1104err_dev_open:
1105 team_port_leave(team, port);
1106 team_port_set_orig_dev_addr(port);
1107
1108err_port_enter:
1109 dev_set_mtu(port_dev, port->orig.mtu);
1110
1111err_set_mtu:
1112 kfree(port);
1113
1114 return err;
1115}
1116
1117static void __team_port_change_port_removed(struct team_port *port);
1118
1119static int team_port_del(struct team *team, struct net_device *port_dev)
1120{
1121 struct net_device *dev = team->dev;
1122 struct team_port *port;
1123 char *portname = port_dev->name;
1124
1125 port = team_port_get_rtnl(port_dev);
1126 if (!port || !team_port_find(team, port)) {
1127 netdev_err(dev, "Device %s does not act as a port of this team\n",
1128 portname);
1129 return -ENOENT;
1130 }
1131
1132 __team_option_inst_mark_removed_port(team, port);
1133 __team_options_change_check(team);
1134 __team_option_inst_del_port(team, port);
1135 __team_port_change_port_removed(port);
1136 team_port_disable(team, port);
1137 list_del_rcu(&port->list);
1138 netdev_rx_handler_unregister(port_dev);
1139 netdev_set_master(port_dev, NULL);
1140 team_port_disable_netpoll(port);
1141 vlan_vids_del_by_dev(port_dev, dev);
1142 dev_close(port_dev);
1143 team_port_leave(team, port);
1144 team_port_set_orig_dev_addr(port);
1145 dev_set_mtu(port_dev, port->orig.mtu);
1146 synchronize_rcu();
1147 kfree(port);
1148 netdev_info(dev, "Port device %s removed\n", portname);
1149 __team_compute_features(team);
1150
1151 return 0;
1152}
1153
1154
1155
1156
1157
1158
1159static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
1160{
1161 ctx->data.str_val = team->mode->kind;
1162 return 0;
1163}
1164
1165static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
1166{
1167 return team_change_mode(team, ctx->data.str_val);
1168}
1169
1170static int team_port_en_option_get(struct team *team,
1171 struct team_gsetter_ctx *ctx)
1172{
1173 struct team_port *port = ctx->info->port;
1174
1175 ctx->data.bool_val = team_port_enabled(port);
1176 return 0;
1177}
1178
1179static int team_port_en_option_set(struct team *team,
1180 struct team_gsetter_ctx *ctx)
1181{
1182 struct team_port *port = ctx->info->port;
1183
1184 if (ctx->data.bool_val)
1185 team_port_enable(team, port);
1186 else
1187 team_port_disable(team, port);
1188 return 0;
1189}
1190
1191static int team_user_linkup_option_get(struct team *team,
1192 struct team_gsetter_ctx *ctx)
1193{
1194 struct team_port *port = ctx->info->port;
1195
1196 ctx->data.bool_val = port->user.linkup;
1197 return 0;
1198}
1199
1200static int team_user_linkup_option_set(struct team *team,
1201 struct team_gsetter_ctx *ctx)
1202{
1203 struct team_port *port = ctx->info->port;
1204
1205 port->user.linkup = ctx->data.bool_val;
1206 team_refresh_port_linkup(port);
1207 return 0;
1208}
1209
1210static int team_user_linkup_en_option_get(struct team *team,
1211 struct team_gsetter_ctx *ctx)
1212{
1213 struct team_port *port = ctx->info->port;
1214
1215 ctx->data.bool_val = port->user.linkup_enabled;
1216 return 0;
1217}
1218
1219static int team_user_linkup_en_option_set(struct team *team,
1220 struct team_gsetter_ctx *ctx)
1221{
1222 struct team_port *port = ctx->info->port;
1223
1224 port->user.linkup_enabled = ctx->data.bool_val;
1225 team_refresh_port_linkup(port);
1226 return 0;
1227}
1228
1229static int team_priority_option_get(struct team *team,
1230 struct team_gsetter_ctx *ctx)
1231{
1232 struct team_port *port = ctx->info->port;
1233
1234 ctx->data.s32_val = port->priority;
1235 return 0;
1236}
1237
1238static int team_priority_option_set(struct team *team,
1239 struct team_gsetter_ctx *ctx)
1240{
1241 struct team_port *port = ctx->info->port;
1242
1243 port->priority = ctx->data.s32_val;
1244 team_queue_override_port_refresh(team, port);
1245 return 0;
1246}
1247
1248static int team_queue_id_option_get(struct team *team,
1249 struct team_gsetter_ctx *ctx)
1250{
1251 struct team_port *port = ctx->info->port;
1252
1253 ctx->data.u32_val = port->queue_id;
1254 return 0;
1255}
1256
1257static int team_queue_id_option_set(struct team *team,
1258 struct team_gsetter_ctx *ctx)
1259{
1260 struct team_port *port = ctx->info->port;
1261
1262 if (port->queue_id == ctx->data.u32_val)
1263 return 0;
1264 if (ctx->data.u32_val >= team->dev->real_num_tx_queues)
1265 return -EINVAL;
1266 port->queue_id = ctx->data.u32_val;
1267 team_queue_override_port_refresh(team, port);
1268 return 0;
1269}
1270
1271
1272static const struct team_option team_options[] = {
1273 {
1274 .name = "mode",
1275 .type = TEAM_OPTION_TYPE_STRING,
1276 .getter = team_mode_option_get,
1277 .setter = team_mode_option_set,
1278 },
1279 {
1280 .name = "enabled",
1281 .type = TEAM_OPTION_TYPE_BOOL,
1282 .per_port = true,
1283 .getter = team_port_en_option_get,
1284 .setter = team_port_en_option_set,
1285 },
1286 {
1287 .name = "user_linkup",
1288 .type = TEAM_OPTION_TYPE_BOOL,
1289 .per_port = true,
1290 .getter = team_user_linkup_option_get,
1291 .setter = team_user_linkup_option_set,
1292 },
1293 {
1294 .name = "user_linkup_enabled",
1295 .type = TEAM_OPTION_TYPE_BOOL,
1296 .per_port = true,
1297 .getter = team_user_linkup_en_option_get,
1298 .setter = team_user_linkup_en_option_set,
1299 },
1300 {
1301 .name = "priority",
1302 .type = TEAM_OPTION_TYPE_S32,
1303 .per_port = true,
1304 .getter = team_priority_option_get,
1305 .setter = team_priority_option_set,
1306 },
1307 {
1308 .name = "queue_id",
1309 .type = TEAM_OPTION_TYPE_U32,
1310 .per_port = true,
1311 .getter = team_queue_id_option_get,
1312 .setter = team_queue_id_option_set,
1313 },
1314};
1315
1316static struct lock_class_key team_netdev_xmit_lock_key;
1317static struct lock_class_key team_netdev_addr_lock_key;
1318static struct lock_class_key team_tx_busylock_key;
1319
1320static void team_set_lockdep_class_one(struct net_device *dev,
1321 struct netdev_queue *txq,
1322 void *unused)
1323{
1324 lockdep_set_class(&txq->_xmit_lock, &team_netdev_xmit_lock_key);
1325}
1326
1327static void team_set_lockdep_class(struct net_device *dev)
1328{
1329 lockdep_set_class(&dev->addr_list_lock, &team_netdev_addr_lock_key);
1330 netdev_for_each_tx_queue(dev, team_set_lockdep_class_one, NULL);
1331 dev->qdisc_tx_busylock = &team_tx_busylock_key;
1332}
1333
1334static int team_init(struct net_device *dev)
1335{
1336 struct team *team = netdev_priv(dev);
1337 int i;
1338 int err;
1339
1340 team->dev = dev;
1341 mutex_init(&team->lock);
1342 team_set_no_mode(team);
1343
1344 team->pcpu_stats = alloc_percpu(struct team_pcpu_stats);
1345 if (!team->pcpu_stats)
1346 return -ENOMEM;
1347
1348 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
1349 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
1350 INIT_LIST_HEAD(&team->port_list);
1351 err = team_queue_override_init(team);
1352 if (err)
1353 goto err_team_queue_override_init;
1354
1355 team_adjust_ops(team);
1356
1357 INIT_LIST_HEAD(&team->option_list);
1358 INIT_LIST_HEAD(&team->option_inst_list);
1359 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1360 if (err)
1361 goto err_options_register;
1362 netif_carrier_off(dev);
1363
1364 team_set_lockdep_class(dev);
1365
1366 return 0;
1367
1368err_options_register:
1369 team_queue_override_fini(team);
1370err_team_queue_override_init:
1371 free_percpu(team->pcpu_stats);
1372
1373 return err;
1374}
1375
1376static void team_uninit(struct net_device *dev)
1377{
1378 struct team *team = netdev_priv(dev);
1379 struct team_port *port;
1380 struct team_port *tmp;
1381
1382 mutex_lock(&team->lock);
1383 list_for_each_entry_safe(port, tmp, &team->port_list, list)
1384 team_port_del(team, port->dev);
1385
1386 __team_change_mode(team, NULL);
1387 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
1388 team_queue_override_fini(team);
1389 mutex_unlock(&team->lock);
1390}
1391
1392static void team_destructor(struct net_device *dev)
1393{
1394 struct team *team = netdev_priv(dev);
1395
1396 free_percpu(team->pcpu_stats);
1397 free_netdev(dev);
1398}
1399
1400static int team_open(struct net_device *dev)
1401{
1402 netif_carrier_on(dev);
1403 return 0;
1404}
1405
1406static int team_close(struct net_device *dev)
1407{
1408 netif_carrier_off(dev);
1409 return 0;
1410}
1411
1412
1413
1414
1415static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1416{
1417 struct team *team = netdev_priv(dev);
1418 bool tx_success;
1419 unsigned int len = skb->len;
1420
1421 tx_success = team_queue_override_transmit(team, skb);
1422 if (!tx_success)
1423 tx_success = team->ops.transmit(team, skb);
1424 if (tx_success) {
1425 struct team_pcpu_stats *pcpu_stats;
1426
1427 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1428 u64_stats_update_begin(&pcpu_stats->syncp);
1429 pcpu_stats->tx_packets++;
1430 pcpu_stats->tx_bytes += len;
1431 u64_stats_update_end(&pcpu_stats->syncp);
1432 } else {
1433 this_cpu_inc(team->pcpu_stats->tx_dropped);
1434 }
1435
1436 return NETDEV_TX_OK;
1437}
1438
1439static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb)
1440{
1441
1442
1443
1444
1445
1446
1447 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1448
1449
1450
1451
1452 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1453
1454 if (unlikely(txq >= dev->real_num_tx_queues)) {
1455 do {
1456 txq -= dev->real_num_tx_queues;
1457 } while (txq >= dev->real_num_tx_queues);
1458 }
1459 return txq;
1460}
1461
1462static void team_change_rx_flags(struct net_device *dev, int change)
1463{
1464 struct team *team = netdev_priv(dev);
1465 struct team_port *port;
1466 int inc;
1467
1468 rcu_read_lock();
1469 list_for_each_entry_rcu(port, &team->port_list, list) {
1470 if (change & IFF_PROMISC) {
1471 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1472 dev_set_promiscuity(port->dev, inc);
1473 }
1474 if (change & IFF_ALLMULTI) {
1475 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1476 dev_set_allmulti(port->dev, inc);
1477 }
1478 }
1479 rcu_read_unlock();
1480}
1481
1482static void team_set_rx_mode(struct net_device *dev)
1483{
1484 struct team *team = netdev_priv(dev);
1485 struct team_port *port;
1486
1487 rcu_read_lock();
1488 list_for_each_entry_rcu(port, &team->port_list, list) {
1489 dev_uc_sync(port->dev, dev);
1490 dev_mc_sync(port->dev, dev);
1491 }
1492 rcu_read_unlock();
1493}
1494
1495static int team_set_mac_address(struct net_device *dev, void *p)
1496{
1497 struct sockaddr *addr = p;
1498 struct team *team = netdev_priv(dev);
1499 struct team_port *port;
1500
1501 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data))
1502 return -EADDRNOTAVAIL;
1503 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1504 dev->addr_assign_type &= ~NET_ADDR_RANDOM;
1505 rcu_read_lock();
1506 list_for_each_entry_rcu(port, &team->port_list, list)
1507 if (team->ops.port_change_dev_addr)
1508 team->ops.port_change_dev_addr(team, port);
1509 rcu_read_unlock();
1510 return 0;
1511}
1512
1513static int team_change_mtu(struct net_device *dev, int new_mtu)
1514{
1515 struct team *team = netdev_priv(dev);
1516 struct team_port *port;
1517 int err;
1518
1519
1520
1521
1522
1523 mutex_lock(&team->lock);
1524 list_for_each_entry(port, &team->port_list, list) {
1525 err = dev_set_mtu(port->dev, new_mtu);
1526 if (err) {
1527 netdev_err(dev, "Device %s failed to change mtu",
1528 port->dev->name);
1529 goto unwind;
1530 }
1531 }
1532 mutex_unlock(&team->lock);
1533
1534 dev->mtu = new_mtu;
1535
1536 return 0;
1537
1538unwind:
1539 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1540 dev_set_mtu(port->dev, dev->mtu);
1541 mutex_unlock(&team->lock);
1542
1543 return err;
1544}
1545
1546static struct rtnl_link_stats64 *
1547team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1548{
1549 struct team *team = netdev_priv(dev);
1550 struct team_pcpu_stats *p;
1551 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1552 u32 rx_dropped = 0, tx_dropped = 0;
1553 unsigned int start;
1554 int i;
1555
1556 for_each_possible_cpu(i) {
1557 p = per_cpu_ptr(team->pcpu_stats, i);
1558 do {
1559 start = u64_stats_fetch_begin_bh(&p->syncp);
1560 rx_packets = p->rx_packets;
1561 rx_bytes = p->rx_bytes;
1562 rx_multicast = p->rx_multicast;
1563 tx_packets = p->tx_packets;
1564 tx_bytes = p->tx_bytes;
1565 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
1566
1567 stats->rx_packets += rx_packets;
1568 stats->rx_bytes += rx_bytes;
1569 stats->multicast += rx_multicast;
1570 stats->tx_packets += tx_packets;
1571 stats->tx_bytes += tx_bytes;
1572
1573
1574
1575
1576 rx_dropped += p->rx_dropped;
1577 tx_dropped += p->tx_dropped;
1578 }
1579 stats->rx_dropped = rx_dropped;
1580 stats->tx_dropped = tx_dropped;
1581 return stats;
1582}
1583
1584static int team_vlan_rx_add_vid(struct net_device *dev, uint16_t vid)
1585{
1586 struct team *team = netdev_priv(dev);
1587 struct team_port *port;
1588 int err;
1589
1590
1591
1592
1593
1594 mutex_lock(&team->lock);
1595 list_for_each_entry(port, &team->port_list, list) {
1596 err = vlan_vid_add(port->dev, vid);
1597 if (err)
1598 goto unwind;
1599 }
1600 mutex_unlock(&team->lock);
1601
1602 return 0;
1603
1604unwind:
1605 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1606 vlan_vid_del(port->dev, vid);
1607 mutex_unlock(&team->lock);
1608
1609 return err;
1610}
1611
1612static int team_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid)
1613{
1614 struct team *team = netdev_priv(dev);
1615 struct team_port *port;
1616
1617 rcu_read_lock();
1618 list_for_each_entry_rcu(port, &team->port_list, list)
1619 vlan_vid_del(port->dev, vid);
1620 rcu_read_unlock();
1621
1622 return 0;
1623}
1624
1625#ifdef CONFIG_NET_POLL_CONTROLLER
1626static void team_poll_controller(struct net_device *dev)
1627{
1628}
1629
1630static void __team_netpoll_cleanup(struct team *team)
1631{
1632 struct team_port *port;
1633
1634 list_for_each_entry(port, &team->port_list, list)
1635 team_port_disable_netpoll(port);
1636}
1637
1638static void team_netpoll_cleanup(struct net_device *dev)
1639{
1640 struct team *team = netdev_priv(dev);
1641
1642 mutex_lock(&team->lock);
1643 __team_netpoll_cleanup(team);
1644 mutex_unlock(&team->lock);
1645}
1646
1647static int team_netpoll_setup(struct net_device *dev,
1648 struct netpoll_info *npifo, gfp_t gfp)
1649{
1650 struct team *team = netdev_priv(dev);
1651 struct team_port *port;
1652 int err = 0;
1653
1654 mutex_lock(&team->lock);
1655 list_for_each_entry(port, &team->port_list, list) {
1656 err = team_port_enable_netpoll(team, port, gfp);
1657 if (err) {
1658 __team_netpoll_cleanup(team);
1659 break;
1660 }
1661 }
1662 mutex_unlock(&team->lock);
1663 return err;
1664}
1665#endif
1666
1667static int team_add_slave(struct net_device *dev, struct net_device *port_dev)
1668{
1669 struct team *team = netdev_priv(dev);
1670 int err;
1671
1672 mutex_lock(&team->lock);
1673 err = team_port_add(team, port_dev);
1674 mutex_unlock(&team->lock);
1675 return err;
1676}
1677
1678static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1679{
1680 struct team *team = netdev_priv(dev);
1681 int err;
1682
1683 mutex_lock(&team->lock);
1684 err = team_port_del(team, port_dev);
1685 mutex_unlock(&team->lock);
1686 return err;
1687}
1688
1689static netdev_features_t team_fix_features(struct net_device *dev,
1690 netdev_features_t features)
1691{
1692 struct team_port *port;
1693 struct team *team = netdev_priv(dev);
1694 netdev_features_t mask;
1695
1696 mask = features;
1697 features &= ~NETIF_F_ONE_FOR_ALL;
1698 features |= NETIF_F_ALL_FOR_ALL;
1699
1700 rcu_read_lock();
1701 list_for_each_entry_rcu(port, &team->port_list, list) {
1702 features = netdev_increment_features(features,
1703 port->dev->features,
1704 mask);
1705 }
1706 rcu_read_unlock();
1707 return features;
1708}
1709
1710static const struct net_device_ops team_netdev_ops = {
1711 .ndo_init = team_init,
1712 .ndo_uninit = team_uninit,
1713 .ndo_open = team_open,
1714 .ndo_stop = team_close,
1715 .ndo_start_xmit = team_xmit,
1716 .ndo_select_queue = team_select_queue,
1717 .ndo_change_rx_flags = team_change_rx_flags,
1718 .ndo_set_rx_mode = team_set_rx_mode,
1719 .ndo_set_mac_address = team_set_mac_address,
1720 .ndo_change_mtu = team_change_mtu,
1721 .ndo_get_stats64 = team_get_stats64,
1722 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
1723 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
1724#ifdef CONFIG_NET_POLL_CONTROLLER
1725 .ndo_poll_controller = team_poll_controller,
1726 .ndo_netpoll_setup = team_netpoll_setup,
1727 .ndo_netpoll_cleanup = team_netpoll_cleanup,
1728#endif
1729 .ndo_add_slave = team_add_slave,
1730 .ndo_del_slave = team_del_slave,
1731 .ndo_fix_features = team_fix_features,
1732};
1733
1734
1735
1736
1737
1738
1739static void team_setup_by_port(struct net_device *dev,
1740 struct net_device *port_dev)
1741{
1742 dev->header_ops = port_dev->header_ops;
1743 dev->type = port_dev->type;
1744 dev->hard_header_len = port_dev->hard_header_len;
1745 dev->addr_len = port_dev->addr_len;
1746 dev->mtu = port_dev->mtu;
1747 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
1748 memcpy(dev->dev_addr, port_dev->dev_addr, port_dev->addr_len);
1749 dev->addr_assign_type &= ~NET_ADDR_RANDOM;
1750}
1751
1752static int team_dev_type_check_change(struct net_device *dev,
1753 struct net_device *port_dev)
1754{
1755 struct team *team = netdev_priv(dev);
1756 char *portname = port_dev->name;
1757 int err;
1758
1759 if (dev->type == port_dev->type)
1760 return 0;
1761 if (!list_empty(&team->port_list)) {
1762 netdev_err(dev, "Device %s is of different type\n", portname);
1763 return -EBUSY;
1764 }
1765 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev);
1766 err = notifier_to_errno(err);
1767 if (err) {
1768 netdev_err(dev, "Refused to change device type\n");
1769 return err;
1770 }
1771 dev_uc_flush(dev);
1772 dev_mc_flush(dev);
1773 team_setup_by_port(dev, port_dev);
1774 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev);
1775 return 0;
1776}
1777
1778static void team_setup(struct net_device *dev)
1779{
1780 ether_setup(dev);
1781
1782 dev->netdev_ops = &team_netdev_ops;
1783 dev->destructor = team_destructor;
1784 dev->tx_queue_len = 0;
1785 dev->flags |= IFF_MULTICAST;
1786 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
1787
1788
1789
1790
1791
1792
1793 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
1794
1795 dev->features |= NETIF_F_LLTX;
1796 dev->features |= NETIF_F_GRO;
1797 dev->hw_features = TEAM_VLAN_FEATURES |
1798 NETIF_F_HW_VLAN_TX |
1799 NETIF_F_HW_VLAN_RX |
1800 NETIF_F_HW_VLAN_FILTER;
1801
1802 dev->hw_features &= ~(NETIF_F_ALL_CSUM & ~NETIF_F_HW_CSUM);
1803 dev->features |= dev->hw_features;
1804}
1805
1806static int team_newlink(struct net *src_net, struct net_device *dev,
1807 struct nlattr *tb[], struct nlattr *data[])
1808{
1809 int err;
1810
1811 if (tb[IFLA_ADDRESS] == NULL)
1812 eth_hw_addr_random(dev);
1813
1814 err = register_netdevice(dev);
1815 if (err)
1816 return err;
1817
1818 return 0;
1819}
1820
1821static int team_validate(struct nlattr *tb[], struct nlattr *data[])
1822{
1823 if (tb[IFLA_ADDRESS]) {
1824 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
1825 return -EINVAL;
1826 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
1827 return -EADDRNOTAVAIL;
1828 }
1829 return 0;
1830}
1831
1832static unsigned int team_get_num_tx_queues(void)
1833{
1834 return TEAM_DEFAULT_NUM_TX_QUEUES;
1835}
1836
1837static unsigned int team_get_num_rx_queues(void)
1838{
1839 return TEAM_DEFAULT_NUM_RX_QUEUES;
1840}
1841
1842static struct rtnl_link_ops team_link_ops __read_mostly = {
1843 .kind = DRV_NAME,
1844 .priv_size = sizeof(struct team),
1845 .setup = team_setup,
1846 .newlink = team_newlink,
1847 .validate = team_validate,
1848 .get_num_tx_queues = team_get_num_tx_queues,
1849 .get_num_rx_queues = team_get_num_rx_queues,
1850};
1851
1852
1853
1854
1855
1856
1857static struct genl_family team_nl_family = {
1858 .id = GENL_ID_GENERATE,
1859 .name = TEAM_GENL_NAME,
1860 .version = TEAM_GENL_VERSION,
1861 .maxattr = TEAM_ATTR_MAX,
1862 .netnsok = true,
1863};
1864
1865static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
1866 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
1867 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
1868 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
1869 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
1870};
1871
1872static const struct nla_policy
1873team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
1874 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
1875 [TEAM_ATTR_OPTION_NAME] = {
1876 .type = NLA_STRING,
1877 .len = TEAM_STRING_MAX_LEN,
1878 },
1879 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
1880 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
1881 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
1882};
1883
1884static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
1885{
1886 struct sk_buff *msg;
1887 void *hdr;
1888 int err;
1889
1890 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1891 if (!msg)
1892 return -ENOMEM;
1893
1894 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
1895 &team_nl_family, 0, TEAM_CMD_NOOP);
1896 if (!hdr) {
1897 err = -EMSGSIZE;
1898 goto err_msg_put;
1899 }
1900
1901 genlmsg_end(msg, hdr);
1902
1903 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid);
1904
1905err_msg_put:
1906 nlmsg_free(msg);
1907
1908 return err;
1909}
1910
1911
1912
1913
1914
1915static struct team *team_nl_team_get(struct genl_info *info)
1916{
1917 struct net *net = genl_info_net(info);
1918 int ifindex;
1919 struct net_device *dev;
1920 struct team *team;
1921
1922 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
1923 return NULL;
1924
1925 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
1926 dev = dev_get_by_index(net, ifindex);
1927 if (!dev || dev->netdev_ops != &team_netdev_ops) {
1928 if (dev)
1929 dev_put(dev);
1930 return NULL;
1931 }
1932
1933 team = netdev_priv(dev);
1934 mutex_lock(&team->lock);
1935 return team;
1936}
1937
1938static void team_nl_team_put(struct team *team)
1939{
1940 mutex_unlock(&team->lock);
1941 dev_put(team->dev);
1942}
1943
1944static int team_nl_send_generic(struct genl_info *info, struct team *team,
1945 int (*fill_func)(struct sk_buff *skb,
1946 struct genl_info *info,
1947 int flags, struct team *team))
1948{
1949 struct sk_buff *skb;
1950 int err;
1951
1952 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1953 if (!skb)
1954 return -ENOMEM;
1955
1956 err = fill_func(skb, info, NLM_F_ACK, team);
1957 if (err < 0)
1958 goto err_fill;
1959
1960 err = genlmsg_unicast(genl_info_net(info), skb, info->snd_portid);
1961 return err;
1962
1963err_fill:
1964 nlmsg_free(skb);
1965 return err;
1966}
1967
1968typedef int team_nl_send_func_t(struct sk_buff *skb,
1969 struct team *team, u32 portid);
1970
1971static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid)
1972{
1973 return genlmsg_unicast(dev_net(team->dev), skb, portid);
1974}
1975
1976static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
1977 struct team_option_inst *opt_inst)
1978{
1979 struct nlattr *option_item;
1980 struct team_option *option = opt_inst->option;
1981 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
1982 struct team_gsetter_ctx ctx;
1983 int err;
1984
1985 ctx.info = opt_inst_info;
1986 err = team_option_get(team, opt_inst, &ctx);
1987 if (err)
1988 return err;
1989
1990 option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
1991 if (!option_item)
1992 return -EMSGSIZE;
1993
1994 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
1995 goto nest_cancel;
1996 if (opt_inst_info->port &&
1997 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
1998 opt_inst_info->port->dev->ifindex))
1999 goto nest_cancel;
2000 if (opt_inst->option->array_size &&
2001 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
2002 opt_inst_info->array_index))
2003 goto nest_cancel;
2004
2005 switch (option->type) {
2006 case TEAM_OPTION_TYPE_U32:
2007 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
2008 goto nest_cancel;
2009 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
2010 goto nest_cancel;
2011 break;
2012 case TEAM_OPTION_TYPE_STRING:
2013 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
2014 goto nest_cancel;
2015 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
2016 ctx.data.str_val))
2017 goto nest_cancel;
2018 break;
2019 case TEAM_OPTION_TYPE_BINARY:
2020 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
2021 goto nest_cancel;
2022 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
2023 ctx.data.bin_val.ptr))
2024 goto nest_cancel;
2025 break;
2026 case TEAM_OPTION_TYPE_BOOL:
2027 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
2028 goto nest_cancel;
2029 if (ctx.data.bool_val &&
2030 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
2031 goto nest_cancel;
2032 break;
2033 case TEAM_OPTION_TYPE_S32:
2034 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32))
2035 goto nest_cancel;
2036 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val))
2037 goto nest_cancel;
2038 break;
2039 default:
2040 BUG();
2041 }
2042 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
2043 goto nest_cancel;
2044 if (opt_inst->changed) {
2045 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
2046 goto nest_cancel;
2047 opt_inst->changed = false;
2048 }
2049 nla_nest_end(skb, option_item);
2050 return 0;
2051
2052nest_cancel:
2053 nla_nest_cancel(skb, option_item);
2054 return -EMSGSIZE;
2055}
2056
2057static int __send_and_alloc_skb(struct sk_buff **pskb,
2058 struct team *team, u32 portid,
2059 team_nl_send_func_t *send_func)
2060{
2061 int err;
2062
2063 if (*pskb) {
2064 err = send_func(*pskb, team, portid);
2065 if (err)
2066 return err;
2067 }
2068 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2069 if (!*pskb)
2070 return -ENOMEM;
2071 return 0;
2072}
2073
2074static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
2075 int flags, team_nl_send_func_t *send_func,
2076 struct list_head *sel_opt_inst_list)
2077{
2078 struct nlattr *option_list;
2079 struct nlmsghdr *nlh;
2080 void *hdr;
2081 struct team_option_inst *opt_inst;
2082 int err;
2083 struct sk_buff *skb = NULL;
2084 bool incomplete;
2085 int i;
2086
2087 opt_inst = list_first_entry(sel_opt_inst_list,
2088 struct team_option_inst, tmp_list);
2089
2090start_again:
2091 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2092 if (err)
2093 return err;
2094
2095 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
2096 TEAM_CMD_OPTIONS_GET);
2097 if (!hdr)
2098 return -EMSGSIZE;
2099
2100 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2101 goto nla_put_failure;
2102 option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION);
2103 if (!option_list)
2104 goto nla_put_failure;
2105
2106 i = 0;
2107 incomplete = false;
2108 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
2109 err = team_nl_fill_one_option_get(skb, team, opt_inst);
2110 if (err) {
2111 if (err == -EMSGSIZE) {
2112 if (!i)
2113 goto errout;
2114 incomplete = true;
2115 break;
2116 }
2117 goto errout;
2118 }
2119 i++;
2120 }
2121
2122 nla_nest_end(skb, option_list);
2123 genlmsg_end(skb, hdr);
2124 if (incomplete)
2125 goto start_again;
2126
2127send_done:
2128 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2129 if (!nlh) {
2130 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2131 if (err)
2132 goto errout;
2133 goto send_done;
2134 }
2135
2136 return send_func(skb, team, portid);
2137
2138nla_put_failure:
2139 err = -EMSGSIZE;
2140errout:
2141 genlmsg_cancel(skb, hdr);
2142 nlmsg_free(skb);
2143 return err;
2144}
2145
2146static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
2147{
2148 struct team *team;
2149 struct team_option_inst *opt_inst;
2150 int err;
2151 LIST_HEAD(sel_opt_inst_list);
2152
2153 team = team_nl_team_get(info);
2154 if (!team)
2155 return -EINVAL;
2156
2157 list_for_each_entry(opt_inst, &team->option_inst_list, list)
2158 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2159 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq,
2160 NLM_F_ACK, team_nl_send_unicast,
2161 &sel_opt_inst_list);
2162
2163 team_nl_team_put(team);
2164
2165 return err;
2166}
2167
2168static int team_nl_send_event_options_get(struct team *team,
2169 struct list_head *sel_opt_inst_list);
2170
2171static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
2172{
2173 struct team *team;
2174 int err = 0;
2175 int i;
2176 struct nlattr *nl_option;
2177 LIST_HEAD(opt_inst_list);
2178
2179 team = team_nl_team_get(info);
2180 if (!team)
2181 return -EINVAL;
2182
2183 err = -EINVAL;
2184 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
2185 err = -EINVAL;
2186 goto team_put;
2187 }
2188
2189 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
2190 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
2191 struct nlattr *attr;
2192 struct nlattr *attr_data;
2193 enum team_option_type opt_type;
2194 int opt_port_ifindex = 0;
2195 u32 opt_array_index = 0;
2196 bool opt_is_array = false;
2197 struct team_option_inst *opt_inst;
2198 char *opt_name;
2199 bool opt_found = false;
2200
2201 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
2202 err = -EINVAL;
2203 goto team_put;
2204 }
2205 err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX,
2206 nl_option, team_nl_option_policy);
2207 if (err)
2208 goto team_put;
2209 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
2210 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
2211 err = -EINVAL;
2212 goto team_put;
2213 }
2214 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
2215 case NLA_U32:
2216 opt_type = TEAM_OPTION_TYPE_U32;
2217 break;
2218 case NLA_STRING:
2219 opt_type = TEAM_OPTION_TYPE_STRING;
2220 break;
2221 case NLA_BINARY:
2222 opt_type = TEAM_OPTION_TYPE_BINARY;
2223 break;
2224 case NLA_FLAG:
2225 opt_type = TEAM_OPTION_TYPE_BOOL;
2226 break;
2227 case NLA_S32:
2228 opt_type = TEAM_OPTION_TYPE_S32;
2229 break;
2230 default:
2231 goto team_put;
2232 }
2233
2234 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
2235 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
2236 err = -EINVAL;
2237 goto team_put;
2238 }
2239
2240 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
2241 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
2242 if (attr)
2243 opt_port_ifindex = nla_get_u32(attr);
2244
2245 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
2246 if (attr) {
2247 opt_is_array = true;
2248 opt_array_index = nla_get_u32(attr);
2249 }
2250
2251 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2252 struct team_option *option = opt_inst->option;
2253 struct team_gsetter_ctx ctx;
2254 struct team_option_inst_info *opt_inst_info;
2255 int tmp_ifindex;
2256
2257 opt_inst_info = &opt_inst->info;
2258 tmp_ifindex = opt_inst_info->port ?
2259 opt_inst_info->port->dev->ifindex : 0;
2260 if (option->type != opt_type ||
2261 strcmp(option->name, opt_name) ||
2262 tmp_ifindex != opt_port_ifindex ||
2263 (option->array_size && !opt_is_array) ||
2264 opt_inst_info->array_index != opt_array_index)
2265 continue;
2266 opt_found = true;
2267 ctx.info = opt_inst_info;
2268 switch (opt_type) {
2269 case TEAM_OPTION_TYPE_U32:
2270 ctx.data.u32_val = nla_get_u32(attr_data);
2271 break;
2272 case TEAM_OPTION_TYPE_STRING:
2273 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2274 err = -EINVAL;
2275 goto team_put;
2276 }
2277 ctx.data.str_val = nla_data(attr_data);
2278 break;
2279 case TEAM_OPTION_TYPE_BINARY:
2280 ctx.data.bin_val.len = nla_len(attr_data);
2281 ctx.data.bin_val.ptr = nla_data(attr_data);
2282 break;
2283 case TEAM_OPTION_TYPE_BOOL:
2284 ctx.data.bool_val = attr_data ? true : false;
2285 break;
2286 case TEAM_OPTION_TYPE_S32:
2287 ctx.data.s32_val = nla_get_s32(attr_data);
2288 break;
2289 default:
2290 BUG();
2291 }
2292 err = team_option_set(team, opt_inst, &ctx);
2293 if (err)
2294 goto team_put;
2295 opt_inst->changed = true;
2296 list_add(&opt_inst->tmp_list, &opt_inst_list);
2297 }
2298 if (!opt_found) {
2299 err = -ENOENT;
2300 goto team_put;
2301 }
2302 }
2303
2304 err = team_nl_send_event_options_get(team, &opt_inst_list);
2305
2306team_put:
2307 team_nl_team_put(team);
2308
2309 return err;
2310}
2311
2312static int team_nl_fill_port_list_get(struct sk_buff *skb,
2313 u32 portid, u32 seq, int flags,
2314 struct team *team,
2315 bool fillall)
2316{
2317 struct nlattr *port_list;
2318 void *hdr;
2319 struct team_port *port;
2320
2321 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags,
2322 TEAM_CMD_PORT_LIST_GET);
2323 if (!hdr)
2324 return -EMSGSIZE;
2325
2326 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2327 goto nla_put_failure;
2328 port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT);
2329 if (!port_list)
2330 goto nla_put_failure;
2331
2332 list_for_each_entry(port, &team->port_list, list) {
2333 struct nlattr *port_item;
2334
2335
2336 if (!fillall && !port->changed)
2337 continue;
2338 port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT);
2339 if (!port_item)
2340 goto nla_put_failure;
2341 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2342 goto nla_put_failure;
2343 if (port->changed) {
2344 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2345 goto nla_put_failure;
2346 port->changed = false;
2347 }
2348 if ((port->removed &&
2349 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2350 (port->state.linkup &&
2351 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2352 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2353 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2354 goto nla_put_failure;
2355 nla_nest_end(skb, port_item);
2356 }
2357
2358 nla_nest_end(skb, port_list);
2359 return genlmsg_end(skb, hdr);
2360
2361nla_put_failure:
2362 genlmsg_cancel(skb, hdr);
2363 return -EMSGSIZE;
2364}
2365
2366static int team_nl_fill_port_list_get_all(struct sk_buff *skb,
2367 struct genl_info *info, int flags,
2368 struct team *team)
2369{
2370 return team_nl_fill_port_list_get(skb, info->snd_portid,
2371 info->snd_seq, NLM_F_ACK,
2372 team, true);
2373}
2374
2375static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2376 struct genl_info *info)
2377{
2378 struct team *team;
2379 int err;
2380
2381 team = team_nl_team_get(info);
2382 if (!team)
2383 return -EINVAL;
2384
2385 err = team_nl_send_generic(info, team, team_nl_fill_port_list_get_all);
2386
2387 team_nl_team_put(team);
2388
2389 return err;
2390}
2391
2392static struct genl_ops team_nl_ops[] = {
2393 {
2394 .cmd = TEAM_CMD_NOOP,
2395 .doit = team_nl_cmd_noop,
2396 .policy = team_nl_policy,
2397 },
2398 {
2399 .cmd = TEAM_CMD_OPTIONS_SET,
2400 .doit = team_nl_cmd_options_set,
2401 .policy = team_nl_policy,
2402 .flags = GENL_ADMIN_PERM,
2403 },
2404 {
2405 .cmd = TEAM_CMD_OPTIONS_GET,
2406 .doit = team_nl_cmd_options_get,
2407 .policy = team_nl_policy,
2408 .flags = GENL_ADMIN_PERM,
2409 },
2410 {
2411 .cmd = TEAM_CMD_PORT_LIST_GET,
2412 .doit = team_nl_cmd_port_list_get,
2413 .policy = team_nl_policy,
2414 .flags = GENL_ADMIN_PERM,
2415 },
2416};
2417
2418static struct genl_multicast_group team_change_event_mcgrp = {
2419 .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME,
2420};
2421
2422static int team_nl_send_multicast(struct sk_buff *skb,
2423 struct team *team, u32 portid)
2424{
2425 return genlmsg_multicast_netns(dev_net(team->dev), skb, 0,
2426 team_change_event_mcgrp.id, GFP_KERNEL);
2427}
2428
2429static int team_nl_send_event_options_get(struct team *team,
2430 struct list_head *sel_opt_inst_list)
2431{
2432 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2433 sel_opt_inst_list);
2434}
2435
2436static int team_nl_send_event_port_list_get(struct team *team)
2437{
2438 struct sk_buff *skb;
2439 int err;
2440 struct net *net = dev_net(team->dev);
2441
2442 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2443 if (!skb)
2444 return -ENOMEM;
2445
2446 err = team_nl_fill_port_list_get(skb, 0, 0, 0, team, false);
2447 if (err < 0)
2448 goto err_fill;
2449
2450 err = genlmsg_multicast_netns(net, skb, 0, team_change_event_mcgrp.id,
2451 GFP_KERNEL);
2452 return err;
2453
2454err_fill:
2455 nlmsg_free(skb);
2456 return err;
2457}
2458
2459static int team_nl_init(void)
2460{
2461 int err;
2462
2463 err = genl_register_family_with_ops(&team_nl_family, team_nl_ops,
2464 ARRAY_SIZE(team_nl_ops));
2465 if (err)
2466 return err;
2467
2468 err = genl_register_mc_group(&team_nl_family, &team_change_event_mcgrp);
2469 if (err)
2470 goto err_change_event_grp_reg;
2471
2472 return 0;
2473
2474err_change_event_grp_reg:
2475 genl_unregister_family(&team_nl_family);
2476
2477 return err;
2478}
2479
2480static void team_nl_fini(void)
2481{
2482 genl_unregister_family(&team_nl_family);
2483}
2484
2485
2486
2487
2488
2489
2490static void __team_options_change_check(struct team *team)
2491{
2492 int err;
2493 struct team_option_inst *opt_inst;
2494 LIST_HEAD(sel_opt_inst_list);
2495
2496 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2497 if (opt_inst->changed)
2498 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2499 }
2500 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
2501 if (err && err != -ESRCH)
2502 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2503 err);
2504}
2505
2506
2507
2508static void __team_port_change_send(struct team_port *port, bool linkup)
2509{
2510 int err;
2511
2512 port->changed = true;
2513 port->state.linkup = linkup;
2514 team_refresh_port_linkup(port);
2515 if (linkup) {
2516 struct ethtool_cmd ecmd;
2517
2518 err = __ethtool_get_settings(port->dev, &ecmd);
2519 if (!err) {
2520 port->state.speed = ethtool_cmd_speed(&ecmd);
2521 port->state.duplex = ecmd.duplex;
2522 goto send_event;
2523 }
2524 }
2525 port->state.speed = 0;
2526 port->state.duplex = 0;
2527
2528send_event:
2529 err = team_nl_send_event_port_list_get(port->team);
2530 if (err && err != -ESRCH)
2531 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
2532 port->dev->name, err);
2533
2534}
2535
2536static void __team_port_change_check(struct team_port *port, bool linkup)
2537{
2538 if (port->state.linkup != linkup)
2539 __team_port_change_send(port, linkup);
2540}
2541
2542static void __team_port_change_port_added(struct team_port *port, bool linkup)
2543{
2544 __team_port_change_send(port, linkup);
2545}
2546
2547static void __team_port_change_port_removed(struct team_port *port)
2548{
2549 port->removed = true;
2550 __team_port_change_send(port, false);
2551}
2552
2553static void team_port_change_check(struct team_port *port, bool linkup)
2554{
2555 struct team *team = port->team;
2556
2557 mutex_lock(&team->lock);
2558 __team_port_change_check(port, linkup);
2559 mutex_unlock(&team->lock);
2560}
2561
2562
2563
2564
2565
2566
2567static int team_device_event(struct notifier_block *unused,
2568 unsigned long event, void *ptr)
2569{
2570 struct net_device *dev = (struct net_device *) ptr;
2571 struct team_port *port;
2572
2573 port = team_port_get_rtnl(dev);
2574 if (!port)
2575 return NOTIFY_DONE;
2576
2577 switch (event) {
2578 case NETDEV_UP:
2579 if (netif_carrier_ok(dev))
2580 team_port_change_check(port, true);
2581 case NETDEV_DOWN:
2582 team_port_change_check(port, false);
2583 case NETDEV_CHANGE:
2584 if (netif_running(port->dev))
2585 team_port_change_check(port,
2586 !!netif_carrier_ok(port->dev));
2587 break;
2588 case NETDEV_UNREGISTER:
2589 team_del_slave(port->team->dev, dev);
2590 break;
2591 case NETDEV_FEAT_CHANGE:
2592 team_compute_features(port->team);
2593 break;
2594 case NETDEV_CHANGEMTU:
2595
2596 return NOTIFY_BAD;
2597 case NETDEV_PRE_TYPE_CHANGE:
2598
2599 return NOTIFY_BAD;
2600 }
2601 return NOTIFY_DONE;
2602}
2603
2604static struct notifier_block team_notifier_block __read_mostly = {
2605 .notifier_call = team_device_event,
2606};
2607
2608
2609
2610
2611
2612
2613static int __init team_module_init(void)
2614{
2615 int err;
2616
2617 register_netdevice_notifier(&team_notifier_block);
2618
2619 err = rtnl_link_register(&team_link_ops);
2620 if (err)
2621 goto err_rtnl_reg;
2622
2623 err = team_nl_init();
2624 if (err)
2625 goto err_nl_init;
2626
2627 return 0;
2628
2629err_nl_init:
2630 rtnl_link_unregister(&team_link_ops);
2631
2632err_rtnl_reg:
2633 unregister_netdevice_notifier(&team_notifier_block);
2634
2635 return err;
2636}
2637
2638static void __exit team_module_exit(void)
2639{
2640 team_nl_fini();
2641 rtnl_link_unregister(&team_link_ops);
2642 unregister_netdevice_notifier(&team_notifier_block);
2643}
2644
2645module_init(team_module_init);
2646module_exit(team_module_exit);
2647
2648MODULE_LICENSE("GPL v2");
2649MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
2650MODULE_DESCRIPTION("Ethernet team device driver");
2651MODULE_ALIAS_RTNL_LINK(DRV_NAME);
2652
