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12#include <linux/kernel.h>
13#include <linux/types.h>
14#include <linux/init.h>
15#include <linux/mutex.h>
16#include <linux/notifier.h>
17#include <linux/netdevice.h>
18#include <linux/etherdevice.h>
19#include <linux/if_bridge.h>
20#include <linux/list.h>
21#include <linux/workqueue.h>
22#include <linux/if_vlan.h>
23#include <linux/rtnetlink.h>
24#include <net/switchdev.h>
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
40 void *data, void (*destructor)(void const *),
41 struct switchdev_trans_item *tritem)
42{
43 tritem->data = data;
44 tritem->destructor = destructor;
45 list_add_tail(&tritem->list, &trans->item_list);
46}
47EXPORT_SYMBOL_GPL(switchdev_trans_item_enqueue);
48
49static struct switchdev_trans_item *
50__switchdev_trans_item_dequeue(struct switchdev_trans *trans)
51{
52 struct switchdev_trans_item *tritem;
53
54 if (list_empty(&trans->item_list))
55 return NULL;
56 tritem = list_first_entry(&trans->item_list,
57 struct switchdev_trans_item, list);
58 list_del(&tritem->list);
59 return tritem;
60}
61
62
63
64
65
66
67void *switchdev_trans_item_dequeue(struct switchdev_trans *trans)
68{
69 struct switchdev_trans_item *tritem;
70
71 tritem = __switchdev_trans_item_dequeue(trans);
72 BUG_ON(!tritem);
73 return tritem->data;
74}
75EXPORT_SYMBOL_GPL(switchdev_trans_item_dequeue);
76
77static void switchdev_trans_init(struct switchdev_trans *trans)
78{
79 INIT_LIST_HEAD(&trans->item_list);
80}
81
82static void switchdev_trans_items_destroy(struct switchdev_trans *trans)
83{
84 struct switchdev_trans_item *tritem;
85
86 while ((tritem = __switchdev_trans_item_dequeue(trans)))
87 tritem->destructor(tritem->data);
88}
89
90static void switchdev_trans_items_warn_destroy(struct net_device *dev,
91 struct switchdev_trans *trans)
92{
93 WARN(!list_empty(&trans->item_list), "%s: transaction item queue is not empty.\n",
94 dev->name);
95 switchdev_trans_items_destroy(trans);
96}
97
98static LIST_HEAD(deferred);
99static DEFINE_SPINLOCK(deferred_lock);
100
101typedef void switchdev_deferred_func_t(struct net_device *dev,
102 const void *data);
103
104struct switchdev_deferred_item {
105 struct list_head list;
106 struct net_device *dev;
107 switchdev_deferred_func_t *func;
108 unsigned long data[0];
109};
110
111static struct switchdev_deferred_item *switchdev_deferred_dequeue(void)
112{
113 struct switchdev_deferred_item *dfitem;
114
115 spin_lock_bh(&deferred_lock);
116 if (list_empty(&deferred)) {
117 dfitem = NULL;
118 goto unlock;
119 }
120 dfitem = list_first_entry(&deferred,
121 struct switchdev_deferred_item, list);
122 list_del(&dfitem->list);
123unlock:
124 spin_unlock_bh(&deferred_lock);
125 return dfitem;
126}
127
128
129
130
131
132
133
134void switchdev_deferred_process(void)
135{
136 struct switchdev_deferred_item *dfitem;
137
138 ASSERT_RTNL();
139
140 while ((dfitem = switchdev_deferred_dequeue())) {
141 dfitem->func(dfitem->dev, dfitem->data);
142 dev_put(dfitem->dev);
143 kfree(dfitem);
144 }
145}
146EXPORT_SYMBOL_GPL(switchdev_deferred_process);
147
148static void switchdev_deferred_process_work(struct work_struct *work)
149{
150 rtnl_lock();
151 switchdev_deferred_process();
152 rtnl_unlock();
153}
154
155static DECLARE_WORK(deferred_process_work, switchdev_deferred_process_work);
156
157static int switchdev_deferred_enqueue(struct net_device *dev,
158 const void *data, size_t data_len,
159 switchdev_deferred_func_t *func)
160{
161 struct switchdev_deferred_item *dfitem;
162
163 dfitem = kmalloc(sizeof(*dfitem) + data_len, GFP_ATOMIC);
164 if (!dfitem)
165 return -ENOMEM;
166 dfitem->dev = dev;
167 dfitem->func = func;
168 memcpy(dfitem->data, data, data_len);
169 dev_hold(dev);
170 spin_lock_bh(&deferred_lock);
171 list_add_tail(&dfitem->list, &deferred);
172 spin_unlock_bh(&deferred_lock);
173 schedule_work(&deferred_process_work);
174 return 0;
175}
176
177
178
179
180
181
182
183int switchdev_port_attr_get(struct net_device *dev, struct switchdev_attr *attr)
184{
185 const struct switchdev_ops *ops = dev->switchdev_ops;
186 struct net_device *lower_dev;
187 struct list_head *iter;
188 struct switchdev_attr first = {
189 .id = SWITCHDEV_ATTR_ID_UNDEFINED
190 };
191 int err = -EOPNOTSUPP;
192
193 if (ops && ops->switchdev_port_attr_get)
194 return ops->switchdev_port_attr_get(dev, attr);
195
196 if (attr->flags & SWITCHDEV_F_NO_RECURSE)
197 return err;
198
199
200
201
202
203
204
205 netdev_for_each_lower_dev(dev, lower_dev, iter) {
206 err = switchdev_port_attr_get(lower_dev, attr);
207 if (err)
208 break;
209 if (first.id == SWITCHDEV_ATTR_ID_UNDEFINED)
210 first = *attr;
211 else if (memcmp(&first, attr, sizeof(*attr)))
212 return -ENODATA;
213 }
214
215 return err;
216}
217EXPORT_SYMBOL_GPL(switchdev_port_attr_get);
218
219static int __switchdev_port_attr_set(struct net_device *dev,
220 const struct switchdev_attr *attr,
221 struct switchdev_trans *trans)
222{
223 const struct switchdev_ops *ops = dev->switchdev_ops;
224 struct net_device *lower_dev;
225 struct list_head *iter;
226 int err = -EOPNOTSUPP;
227
228 if (ops && ops->switchdev_port_attr_set) {
229 err = ops->switchdev_port_attr_set(dev, attr, trans);
230 goto done;
231 }
232
233 if (attr->flags & SWITCHDEV_F_NO_RECURSE)
234 goto done;
235
236
237
238
239
240
241 netdev_for_each_lower_dev(dev, lower_dev, iter) {
242 err = __switchdev_port_attr_set(lower_dev, attr, trans);
243 if (err)
244 break;
245 }
246
247done:
248 if (err == -EOPNOTSUPP && attr->flags & SWITCHDEV_F_SKIP_EOPNOTSUPP)
249 err = 0;
250
251 return err;
252}
253
254static int switchdev_port_attr_set_now(struct net_device *dev,
255 const struct switchdev_attr *attr)
256{
257 struct switchdev_trans trans;
258 int err;
259
260 switchdev_trans_init(&trans);
261
262
263
264
265
266
267
268
269 trans.ph_prepare = true;
270 err = __switchdev_port_attr_set(dev, attr, &trans);
271 if (err) {
272
273
274
275
276
277 if (err != -EOPNOTSUPP)
278 switchdev_trans_items_destroy(&trans);
279
280 return err;
281 }
282
283
284
285
286
287
288 trans.ph_prepare = false;
289 err = __switchdev_port_attr_set(dev, attr, &trans);
290 WARN(err, "%s: Commit of attribute (id=%d) failed.\n",
291 dev->name, attr->id);
292 switchdev_trans_items_warn_destroy(dev, &trans);
293
294 return err;
295}
296
297static void switchdev_port_attr_set_deferred(struct net_device *dev,
298 const void *data)
299{
300 const struct switchdev_attr *attr = data;
301 int err;
302
303 err = switchdev_port_attr_set_now(dev, attr);
304 if (err && err != -EOPNOTSUPP)
305 netdev_err(dev, "failed (err=%d) to set attribute (id=%d)\n",
306 err, attr->id);
307 if (attr->complete)
308 attr->complete(dev, err, attr->complete_priv);
309}
310
311static int switchdev_port_attr_set_defer(struct net_device *dev,
312 const struct switchdev_attr *attr)
313{
314 return switchdev_deferred_enqueue(dev, attr, sizeof(*attr),
315 switchdev_port_attr_set_deferred);
316}
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330
331int switchdev_port_attr_set(struct net_device *dev,
332 const struct switchdev_attr *attr)
333{
334 if (attr->flags & SWITCHDEV_F_DEFER)
335 return switchdev_port_attr_set_defer(dev, attr);
336 ASSERT_RTNL();
337 return switchdev_port_attr_set_now(dev, attr);
338}
339EXPORT_SYMBOL_GPL(switchdev_port_attr_set);
340
341static size_t switchdev_obj_size(const struct switchdev_obj *obj)
342{
343 switch (obj->id) {
344 case SWITCHDEV_OBJ_ID_PORT_VLAN:
345 return sizeof(struct switchdev_obj_port_vlan);
346 case SWITCHDEV_OBJ_ID_PORT_FDB:
347 return sizeof(struct switchdev_obj_port_fdb);
348 case SWITCHDEV_OBJ_ID_PORT_MDB:
349 return sizeof(struct switchdev_obj_port_mdb);
350 default:
351 BUG();
352 }
353 return 0;
354}
355
356static int __switchdev_port_obj_add(struct net_device *dev,
357 const struct switchdev_obj *obj,
358 struct switchdev_trans *trans)
359{
360 const struct switchdev_ops *ops = dev->switchdev_ops;
361 struct net_device *lower_dev;
362 struct list_head *iter;
363 int err = -EOPNOTSUPP;
364
365 if (ops && ops->switchdev_port_obj_add)
366 return ops->switchdev_port_obj_add(dev, obj, trans);
367
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370
371
372
373 netdev_for_each_lower_dev(dev, lower_dev, iter) {
374 err = __switchdev_port_obj_add(lower_dev, obj, trans);
375 if (err)
376 break;
377 }
378
379 return err;
380}
381
382static int switchdev_port_obj_add_now(struct net_device *dev,
383 const struct switchdev_obj *obj)
384{
385 struct switchdev_trans trans;
386 int err;
387
388 ASSERT_RTNL();
389
390 switchdev_trans_init(&trans);
391
392
393
394
395
396
397
398
399 trans.ph_prepare = true;
400 err = __switchdev_port_obj_add(dev, obj, &trans);
401 if (err) {
402
403
404
405
406
407 if (err != -EOPNOTSUPP)
408 switchdev_trans_items_destroy(&trans);
409
410 return err;
411 }
412
413
414
415
416
417
418 trans.ph_prepare = false;
419 err = __switchdev_port_obj_add(dev, obj, &trans);
420 WARN(err, "%s: Commit of object (id=%d) failed.\n", dev->name, obj->id);
421 switchdev_trans_items_warn_destroy(dev, &trans);
422
423 return err;
424}
425
426static void switchdev_port_obj_add_deferred(struct net_device *dev,
427 const void *data)
428{
429 const struct switchdev_obj *obj = data;
430 int err;
431
432 err = switchdev_port_obj_add_now(dev, obj);
433 if (err && err != -EOPNOTSUPP)
434 netdev_err(dev, "failed (err=%d) to add object (id=%d)\n",
435 err, obj->id);
436 if (obj->complete)
437 obj->complete(dev, err, obj->complete_priv);
438}
439
440static int switchdev_port_obj_add_defer(struct net_device *dev,
441 const struct switchdev_obj *obj)
442{
443 return switchdev_deferred_enqueue(dev, obj, switchdev_obj_size(obj),
444 switchdev_port_obj_add_deferred);
445}
446
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459
460
461int switchdev_port_obj_add(struct net_device *dev,
462 const struct switchdev_obj *obj)
463{
464 if (obj->flags & SWITCHDEV_F_DEFER)
465 return switchdev_port_obj_add_defer(dev, obj);
466 ASSERT_RTNL();
467 return switchdev_port_obj_add_now(dev, obj);
468}
469EXPORT_SYMBOL_GPL(switchdev_port_obj_add);
470
471static int switchdev_port_obj_del_now(struct net_device *dev,
472 const struct switchdev_obj *obj)
473{
474 const struct switchdev_ops *ops = dev->switchdev_ops;
475 struct net_device *lower_dev;
476 struct list_head *iter;
477 int err = -EOPNOTSUPP;
478
479 if (ops && ops->switchdev_port_obj_del)
480 return ops->switchdev_port_obj_del(dev, obj);
481
482
483
484
485
486
487 netdev_for_each_lower_dev(dev, lower_dev, iter) {
488 err = switchdev_port_obj_del_now(lower_dev, obj);
489 if (err)
490 break;
491 }
492
493 return err;
494}
495
496static void switchdev_port_obj_del_deferred(struct net_device *dev,
497 const void *data)
498{
499 const struct switchdev_obj *obj = data;
500 int err;
501
502 err = switchdev_port_obj_del_now(dev, obj);
503 if (err && err != -EOPNOTSUPP)
504 netdev_err(dev, "failed (err=%d) to del object (id=%d)\n",
505 err, obj->id);
506 if (obj->complete)
507 obj->complete(dev, err, obj->complete_priv);
508}
509
510static int switchdev_port_obj_del_defer(struct net_device *dev,
511 const struct switchdev_obj *obj)
512{
513 return switchdev_deferred_enqueue(dev, obj, switchdev_obj_size(obj),
514 switchdev_port_obj_del_deferred);
515}
516
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526
527int switchdev_port_obj_del(struct net_device *dev,
528 const struct switchdev_obj *obj)
529{
530 if (obj->flags & SWITCHDEV_F_DEFER)
531 return switchdev_port_obj_del_defer(dev, obj);
532 ASSERT_RTNL();
533 return switchdev_port_obj_del_now(dev, obj);
534}
535EXPORT_SYMBOL_GPL(switchdev_port_obj_del);
536
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541
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544
545
546
547int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj,
548 switchdev_obj_dump_cb_t *cb)
549{
550 const struct switchdev_ops *ops = dev->switchdev_ops;
551 struct net_device *lower_dev;
552 struct list_head *iter;
553 int err = -EOPNOTSUPP;
554
555 ASSERT_RTNL();
556
557 if (ops && ops->switchdev_port_obj_dump)
558 return ops->switchdev_port_obj_dump(dev, obj, cb);
559
560
561
562
563
564
565 netdev_for_each_lower_dev(dev, lower_dev, iter) {
566 err = switchdev_port_obj_dump(lower_dev, obj, cb);
567 break;
568 }
569
570 return err;
571}
572EXPORT_SYMBOL_GPL(switchdev_port_obj_dump);
573
574static ATOMIC_NOTIFIER_HEAD(switchdev_notif_chain);
575
576
577
578
579
580
581
582int register_switchdev_notifier(struct notifier_block *nb)
583{
584 return atomic_notifier_chain_register(&switchdev_notif_chain, nb);
585}
586EXPORT_SYMBOL_GPL(register_switchdev_notifier);
587
588
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590
591
592
593
594int unregister_switchdev_notifier(struct notifier_block *nb)
595{
596 return atomic_notifier_chain_unregister(&switchdev_notif_chain, nb);
597}
598EXPORT_SYMBOL_GPL(unregister_switchdev_notifier);
599
600
601
602
603
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605
606
607
608int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
609 struct switchdev_notifier_info *info)
610{
611 info->dev = dev;
612 return atomic_notifier_call_chain(&switchdev_notif_chain, val, info);
613}
614EXPORT_SYMBOL_GPL(call_switchdev_notifiers);
615
616struct switchdev_vlan_dump {
617 struct switchdev_obj_port_vlan vlan;
618 struct sk_buff *skb;
619 u32 filter_mask;
620 u16 flags;
621 u16 begin;
622 u16 end;
623};
624
625static int switchdev_port_vlan_dump_put(struct switchdev_vlan_dump *dump)
626{
627 struct bridge_vlan_info vinfo;
628
629 vinfo.flags = dump->flags;
630
631 if (dump->begin == 0 && dump->end == 0) {
632 return 0;
633 } else if (dump->begin == dump->end) {
634 vinfo.vid = dump->begin;
635 if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO,
636 sizeof(vinfo), &vinfo))
637 return -EMSGSIZE;
638 } else {
639 vinfo.vid = dump->begin;
640 vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN;
641 if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO,
642 sizeof(vinfo), &vinfo))
643 return -EMSGSIZE;
644 vinfo.vid = dump->end;
645 vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN;
646 vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_END;
647 if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO,
648 sizeof(vinfo), &vinfo))
649 return -EMSGSIZE;
650 }
651
652 return 0;
653}
654
655static int switchdev_port_vlan_dump_cb(struct switchdev_obj *obj)
656{
657 struct switchdev_obj_port_vlan *vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
658 struct switchdev_vlan_dump *dump =
659 container_of(vlan, struct switchdev_vlan_dump, vlan);
660 int err = 0;
661
662 if (vlan->vid_begin > vlan->vid_end)
663 return -EINVAL;
664
665 if (dump->filter_mask & RTEXT_FILTER_BRVLAN) {
666 dump->flags = vlan->flags;
667 for (dump->begin = dump->end = vlan->vid_begin;
668 dump->begin <= vlan->vid_end;
669 dump->begin++, dump->end++) {
670 err = switchdev_port_vlan_dump_put(dump);
671 if (err)
672 return err;
673 }
674 } else if (dump->filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) {
675 if (dump->begin > vlan->vid_begin &&
676 dump->begin >= vlan->vid_end) {
677 if ((dump->begin - 1) == vlan->vid_end &&
678 dump->flags == vlan->flags) {
679
680 dump->begin = vlan->vid_begin;
681 } else {
682 err = switchdev_port_vlan_dump_put(dump);
683 dump->flags = vlan->flags;
684 dump->begin = vlan->vid_begin;
685 dump->end = vlan->vid_end;
686 }
687 } else if (dump->end <= vlan->vid_begin &&
688 dump->end < vlan->vid_end) {
689 if ((dump->end + 1) == vlan->vid_begin &&
690 dump->flags == vlan->flags) {
691
692 dump->end = vlan->vid_end;
693 } else {
694 err = switchdev_port_vlan_dump_put(dump);
695 dump->flags = vlan->flags;
696 dump->begin = vlan->vid_begin;
697 dump->end = vlan->vid_end;
698 }
699 } else {
700 err = -EINVAL;
701 }
702 }
703
704 return err;
705}
706
707static int switchdev_port_vlan_fill(struct sk_buff *skb, struct net_device *dev,
708 u32 filter_mask)
709{
710 struct switchdev_vlan_dump dump = {
711 .vlan.obj.orig_dev = dev,
712 .vlan.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
713 .skb = skb,
714 .filter_mask = filter_mask,
715 };
716 int err = 0;
717
718 if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
719 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
720 err = switchdev_port_obj_dump(dev, &dump.vlan.obj,
721 switchdev_port_vlan_dump_cb);
722 if (err)
723 goto err_out;
724 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
725
726 err = switchdev_port_vlan_dump_put(&dump);
727 }
728
729err_out:
730 return err == -EOPNOTSUPP ? 0 : err;
731}
732
733
734
735
736
737
738
739
740
741int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
742 struct net_device *dev, u32 filter_mask,
743 int nlflags)
744{
745 struct switchdev_attr attr = {
746 .orig_dev = dev,
747 .id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
748 };
749 u16 mode = BRIDGE_MODE_UNDEF;
750 u32 mask = BR_LEARNING | BR_LEARNING_SYNC | BR_FLOOD;
751 int err;
752
753 if (!netif_is_bridge_port(dev))
754 return -EOPNOTSUPP;
755
756 err = switchdev_port_attr_get(dev, &attr);
757 if (err && err != -EOPNOTSUPP)
758 return err;
759
760 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
761 attr.u.brport_flags, mask, nlflags,
762 filter_mask, switchdev_port_vlan_fill);
763}
764EXPORT_SYMBOL_GPL(switchdev_port_bridge_getlink);
765
766static int switchdev_port_br_setflag(struct net_device *dev,
767 struct nlattr *nlattr,
768 unsigned long brport_flag)
769{
770 struct switchdev_attr attr = {
771 .orig_dev = dev,
772 .id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
773 };
774 u8 flag = nla_get_u8(nlattr);
775 int err;
776
777 err = switchdev_port_attr_get(dev, &attr);
778 if (err)
779 return err;
780
781 if (flag)
782 attr.u.brport_flags |= brport_flag;
783 else
784 attr.u.brport_flags &= ~brport_flag;
785
786 return switchdev_port_attr_set(dev, &attr);
787}
788
789static const struct nla_policy
790switchdev_port_bridge_policy[IFLA_BRPORT_MAX + 1] = {
791 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
792 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
793 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
794 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
795 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
796 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
797 [IFLA_BRPORT_FAST_LEAVE] = { .type = NLA_U8 },
798 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
799 [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 },
800 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
801};
802
803static int switchdev_port_br_setlink_protinfo(struct net_device *dev,
804 struct nlattr *protinfo)
805{
806 struct nlattr *attr;
807 int rem;
808 int err;
809
810 err = nla_validate_nested(protinfo, IFLA_BRPORT_MAX,
811 switchdev_port_bridge_policy, NULL);
812 if (err)
813 return err;
814
815 nla_for_each_nested(attr, protinfo, rem) {
816 switch (nla_type(attr)) {
817 case IFLA_BRPORT_LEARNING:
818 err = switchdev_port_br_setflag(dev, attr,
819 BR_LEARNING);
820 break;
821 case IFLA_BRPORT_LEARNING_SYNC:
822 err = switchdev_port_br_setflag(dev, attr,
823 BR_LEARNING_SYNC);
824 break;
825 case IFLA_BRPORT_UNICAST_FLOOD:
826 err = switchdev_port_br_setflag(dev, attr, BR_FLOOD);
827 break;
828 default:
829 err = -EOPNOTSUPP;
830 break;
831 }
832 if (err)
833 return err;
834 }
835
836 return 0;
837}
838
839static int switchdev_port_br_afspec(struct net_device *dev,
840 struct nlattr *afspec,
841 int (*f)(struct net_device *dev,
842 const struct switchdev_obj *obj))
843{
844 struct nlattr *attr;
845 struct bridge_vlan_info *vinfo;
846 struct switchdev_obj_port_vlan vlan = {
847 .obj.orig_dev = dev,
848 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
849 };
850 int rem;
851 int err;
852
853 nla_for_each_nested(attr, afspec, rem) {
854 if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO)
855 continue;
856 if (nla_len(attr) != sizeof(struct bridge_vlan_info))
857 return -EINVAL;
858 vinfo = nla_data(attr);
859 if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK)
860 return -EINVAL;
861 vlan.flags = vinfo->flags;
862 if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
863 if (vlan.vid_begin)
864 return -EINVAL;
865 vlan.vid_begin = vinfo->vid;
866
867 if (vlan.flags & BRIDGE_VLAN_INFO_PVID)
868 return -EINVAL;
869 } else if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END) {
870 if (!vlan.vid_begin)
871 return -EINVAL;
872 vlan.vid_end = vinfo->vid;
873 if (vlan.vid_end <= vlan.vid_begin)
874 return -EINVAL;
875 err = f(dev, &vlan.obj);
876 if (err)
877 return err;
878 vlan.vid_begin = 0;
879 } else {
880 if (vlan.vid_begin)
881 return -EINVAL;
882 vlan.vid_begin = vinfo->vid;
883 vlan.vid_end = vinfo->vid;
884 err = f(dev, &vlan.obj);
885 if (err)
886 return err;
887 vlan.vid_begin = 0;
888 }
889 }
890
891 return 0;
892}
893
894
895
896
897
898
899
900
901
902
903
904int switchdev_port_bridge_setlink(struct net_device *dev,
905 struct nlmsghdr *nlh, u16 flags)
906{
907 struct nlattr *protinfo;
908 struct nlattr *afspec;
909 int err = 0;
910
911 if (!netif_is_bridge_port(dev))
912 return -EOPNOTSUPP;
913
914 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
915 IFLA_PROTINFO);
916 if (protinfo) {
917 err = switchdev_port_br_setlink_protinfo(dev, protinfo);
918 if (err)
919 return err;
920 }
921
922 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
923 IFLA_AF_SPEC);
924 if (afspec)
925 err = switchdev_port_br_afspec(dev, afspec,
926 switchdev_port_obj_add);
927
928 return err;
929}
930EXPORT_SYMBOL_GPL(switchdev_port_bridge_setlink);
931
932
933
934
935
936
937
938
939
940
941
942int switchdev_port_bridge_dellink(struct net_device *dev,
943 struct nlmsghdr *nlh, u16 flags)
944{
945 struct nlattr *afspec;
946
947 if (!netif_is_bridge_port(dev))
948 return -EOPNOTSUPP;
949
950 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
951 IFLA_AF_SPEC);
952 if (afspec)
953 return switchdev_port_br_afspec(dev, afspec,
954 switchdev_port_obj_del);
955
956 return 0;
957}
958EXPORT_SYMBOL_GPL(switchdev_port_bridge_dellink);
959
960
961
962
963
964
965
966
967
968
969
970
971int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
972 struct net_device *dev, const unsigned char *addr,
973 u16 vid, u16 nlm_flags)
974{
975 struct switchdev_obj_port_fdb fdb = {
976 .obj.orig_dev = dev,
977 .obj.id = SWITCHDEV_OBJ_ID_PORT_FDB,
978 .vid = vid,
979 };
980
981 ether_addr_copy(fdb.addr, addr);
982 return switchdev_port_obj_add(dev, &fdb.obj);
983}
984EXPORT_SYMBOL_GPL(switchdev_port_fdb_add);
985
986
987
988
989
990
991
992
993
994
995
996
997int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
998 struct net_device *dev, const unsigned char *addr,
999 u16 vid)
1000{
1001 struct switchdev_obj_port_fdb fdb = {
1002 .obj.orig_dev = dev,
1003 .obj.id = SWITCHDEV_OBJ_ID_PORT_FDB,
1004 .vid = vid,
1005 };
1006
1007 ether_addr_copy(fdb.addr, addr);
1008 return switchdev_port_obj_del(dev, &fdb.obj);
1009}
1010EXPORT_SYMBOL_GPL(switchdev_port_fdb_del);
1011
1012struct switchdev_fdb_dump {
1013 struct switchdev_obj_port_fdb fdb;
1014 struct net_device *dev;
1015 struct sk_buff *skb;
1016 struct netlink_callback *cb;
1017 int idx;
1018};
1019
1020static int switchdev_port_fdb_dump_cb(struct switchdev_obj *obj)
1021{
1022 struct switchdev_obj_port_fdb *fdb = SWITCHDEV_OBJ_PORT_FDB(obj);
1023 struct switchdev_fdb_dump *dump =
1024 container_of(fdb, struct switchdev_fdb_dump, fdb);
1025 u32 portid = NETLINK_CB(dump->cb->skb).portid;
1026 u32 seq = dump->cb->nlh->nlmsg_seq;
1027 struct nlmsghdr *nlh;
1028 struct ndmsg *ndm;
1029
1030 if (dump->idx < dump->cb->args[2])
1031 goto skip;
1032
1033 nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
1034 sizeof(*ndm), NLM_F_MULTI);
1035 if (!nlh)
1036 return -EMSGSIZE;
1037
1038 ndm = nlmsg_data(nlh);
1039 ndm->ndm_family = AF_BRIDGE;
1040 ndm->ndm_pad1 = 0;
1041 ndm->ndm_pad2 = 0;
1042 ndm->ndm_flags = NTF_SELF;
1043 ndm->ndm_type = 0;
1044 ndm->ndm_ifindex = dump->dev->ifindex;
1045 ndm->ndm_state = fdb->ndm_state;
1046
1047 if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, fdb->addr))
1048 goto nla_put_failure;
1049
1050 if (fdb->vid && nla_put_u16(dump->skb, NDA_VLAN, fdb->vid))
1051 goto nla_put_failure;
1052
1053 nlmsg_end(dump->skb, nlh);
1054
1055skip:
1056 dump->idx++;
1057 return 0;
1058
1059nla_put_failure:
1060 nlmsg_cancel(dump->skb, nlh);
1061 return -EMSGSIZE;
1062}
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
1076 struct net_device *dev,
1077 struct net_device *filter_dev, int *idx)
1078{
1079 struct switchdev_fdb_dump dump = {
1080 .fdb.obj.orig_dev = dev,
1081 .fdb.obj.id = SWITCHDEV_OBJ_ID_PORT_FDB,
1082 .dev = dev,
1083 .skb = skb,
1084 .cb = cb,
1085 .idx = *idx,
1086 };
1087 int err;
1088
1089 err = switchdev_port_obj_dump(dev, &dump.fdb.obj,
1090 switchdev_port_fdb_dump_cb);
1091 *idx = dump.idx;
1092 return err;
1093}
1094EXPORT_SYMBOL_GPL(switchdev_port_fdb_dump);
1095
1096bool switchdev_port_same_parent_id(struct net_device *a,
1097 struct net_device *b)
1098{
1099 struct switchdev_attr a_attr = {
1100 .orig_dev = a,
1101 .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
1102 };
1103 struct switchdev_attr b_attr = {
1104 .orig_dev = b,
1105 .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
1106 };
1107
1108 if (switchdev_port_attr_get(a, &a_attr) ||
1109 switchdev_port_attr_get(b, &b_attr))
1110 return false;
1111
1112 return netdev_phys_item_id_same(&a_attr.u.ppid, &b_attr.u.ppid);
1113}
1114EXPORT_SYMBOL_GPL(switchdev_port_same_parent_id);
1115