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Merge tag 'io_uring-5.7-2020-05-22' of git://git.kernel.dk/linux-block
[thirdparty/linux.git] / net / bridge / br_netlink.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Bridge netlink control interface
4 *
5 * Authors:
6 * Stephen Hemminger <shemminger@osdl.org>
7 */
8
9 #include <linux/kernel.h>
10 #include <linux/slab.h>
11 #include <linux/etherdevice.h>
12 #include <net/rtnetlink.h>
13 #include <net/net_namespace.h>
14 #include <net/sock.h>
15 #include <uapi/linux/if_bridge.h>
16
17 #include "br_private.h"
18 #include "br_private_stp.h"
19 #include "br_private_tunnel.h"
20
21 static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
22 u32 filter_mask)
23 {
24 struct net_bridge_vlan *v;
25 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
26 u16 flags, pvid;
27 int num_vlans = 0;
28
29 if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
30 return 0;
31
32 pvid = br_get_pvid(vg);
33 /* Count number of vlan infos */
34 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
35 flags = 0;
36 /* only a context, bridge vlan not activated */
37 if (!br_vlan_should_use(v))
38 continue;
39 if (v->vid == pvid)
40 flags |= BRIDGE_VLAN_INFO_PVID;
41
42 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
43 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
44
45 if (vid_range_start == 0) {
46 goto initvars;
47 } else if ((v->vid - vid_range_end) == 1 &&
48 flags == vid_range_flags) {
49 vid_range_end = v->vid;
50 continue;
51 } else {
52 if ((vid_range_end - vid_range_start) > 0)
53 num_vlans += 2;
54 else
55 num_vlans += 1;
56 }
57 initvars:
58 vid_range_start = v->vid;
59 vid_range_end = v->vid;
60 vid_range_flags = flags;
61 }
62
63 if (vid_range_start != 0) {
64 if ((vid_range_end - vid_range_start) > 0)
65 num_vlans += 2;
66 else
67 num_vlans += 1;
68 }
69
70 return num_vlans;
71 }
72
73 static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg,
74 u32 filter_mask)
75 {
76 int num_vlans;
77
78 if (!vg)
79 return 0;
80
81 if (filter_mask & RTEXT_FILTER_BRVLAN)
82 return vg->num_vlans;
83
84 rcu_read_lock();
85 num_vlans = __get_num_vlan_infos(vg, filter_mask);
86 rcu_read_unlock();
87
88 return num_vlans;
89 }
90
91 static size_t br_get_link_af_size_filtered(const struct net_device *dev,
92 u32 filter_mask)
93 {
94 struct net_bridge_vlan_group *vg = NULL;
95 struct net_bridge_port *p = NULL;
96 struct net_bridge *br;
97 int num_vlan_infos;
98 size_t vinfo_sz = 0;
99
100 rcu_read_lock();
101 if (netif_is_bridge_port(dev)) {
102 p = br_port_get_rcu(dev);
103 vg = nbp_vlan_group_rcu(p);
104 } else if (dev->priv_flags & IFF_EBRIDGE) {
105 br = netdev_priv(dev);
106 vg = br_vlan_group_rcu(br);
107 }
108 num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
109 rcu_read_unlock();
110
111 if (p && (p->flags & BR_VLAN_TUNNEL))
112 vinfo_sz += br_get_vlan_tunnel_info_size(vg);
113
114 /* Each VLAN is returned in bridge_vlan_info along with flags */
115 vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
116
117 return vinfo_sz;
118 }
119
120 static inline size_t br_port_info_size(void)
121 {
122 return nla_total_size(1) /* IFLA_BRPORT_STATE */
123 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */
124 + nla_total_size(4) /* IFLA_BRPORT_COST */
125 + nla_total_size(1) /* IFLA_BRPORT_MODE */
126 + nla_total_size(1) /* IFLA_BRPORT_GUARD */
127 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */
128 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
129 + nla_total_size(1) /* IFLA_BRPORT_MCAST_TO_UCAST */
130 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */
131 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
132 + nla_total_size(1) /* IFLA_BRPORT_MCAST_FLOOD */
133 + nla_total_size(1) /* IFLA_BRPORT_BCAST_FLOOD */
134 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
135 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
136 + nla_total_size(1) /* IFLA_BRPORT_VLAN_TUNNEL */
137 + nla_total_size(1) /* IFLA_BRPORT_NEIGH_SUPPRESS */
138 + nla_total_size(1) /* IFLA_BRPORT_ISOLATED */
139 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
140 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */
141 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */
142 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */
143 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */
144 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */
145 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
146 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */
147 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
148 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
149 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */
150 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
151 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */
152 #endif
153 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_GROUP_FWD_MASK */
154 + 0;
155 }
156
157 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
158 {
159 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
160 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
161 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
162 + nla_total_size(4) /* IFLA_MASTER */
163 + nla_total_size(4) /* IFLA_MTU */
164 + nla_total_size(4) /* IFLA_LINK */
165 + nla_total_size(1) /* IFLA_OPERSTATE */
166 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
167 + nla_total_size(br_get_link_af_size_filtered(dev,
168 filter_mask)) /* IFLA_AF_SPEC */
169 + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */
170 }
171
172 static int br_port_fill_attrs(struct sk_buff *skb,
173 const struct net_bridge_port *p)
174 {
175 u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
176 struct net_bridge_port *backup_p;
177 u64 timerval;
178
179 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
180 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
181 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
182 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
183 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
184 nla_put_u8(skb, IFLA_BRPORT_PROTECT,
185 !!(p->flags & BR_ROOT_BLOCK)) ||
186 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE,
187 !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
188 nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST,
189 !!(p->flags & BR_MULTICAST_TO_UNICAST)) ||
190 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
191 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD,
192 !!(p->flags & BR_FLOOD)) ||
193 nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD,
194 !!(p->flags & BR_MCAST_FLOOD)) ||
195 nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD,
196 !!(p->flags & BR_BCAST_FLOOD)) ||
197 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
198 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
199 !!(p->flags & BR_PROXYARP_WIFI)) ||
200 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
201 &p->designated_root) ||
202 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
203 &p->designated_bridge) ||
204 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
205 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
206 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
207 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
208 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
209 p->topology_change_ack) ||
210 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) ||
211 nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags &
212 BR_VLAN_TUNNEL)) ||
213 nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) ||
214 nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS,
215 !!(p->flags & BR_NEIGH_SUPPRESS)) ||
216 nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED)))
217 return -EMSGSIZE;
218
219 timerval = br_timer_value(&p->message_age_timer);
220 if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval,
221 IFLA_BRPORT_PAD))
222 return -EMSGSIZE;
223 timerval = br_timer_value(&p->forward_delay_timer);
224 if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval,
225 IFLA_BRPORT_PAD))
226 return -EMSGSIZE;
227 timerval = br_timer_value(&p->hold_timer);
228 if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval,
229 IFLA_BRPORT_PAD))
230 return -EMSGSIZE;
231
232 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
233 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
234 p->multicast_router))
235 return -EMSGSIZE;
236 #endif
237
238 /* we might be called only with br->lock */
239 rcu_read_lock();
240 backup_p = rcu_dereference(p->backup_port);
241 if (backup_p)
242 nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT,
243 backup_p->dev->ifindex);
244 rcu_read_unlock();
245
246 return 0;
247 }
248
249 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
250 u16 vid_end, u16 flags)
251 {
252 struct bridge_vlan_info vinfo;
253
254 if ((vid_end - vid_start) > 0) {
255 /* add range to skb */
256 vinfo.vid = vid_start;
257 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
258 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
259 sizeof(vinfo), &vinfo))
260 goto nla_put_failure;
261
262 vinfo.vid = vid_end;
263 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
264 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
265 sizeof(vinfo), &vinfo))
266 goto nla_put_failure;
267 } else {
268 vinfo.vid = vid_start;
269 vinfo.flags = flags;
270 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
271 sizeof(vinfo), &vinfo))
272 goto nla_put_failure;
273 }
274
275 return 0;
276
277 nla_put_failure:
278 return -EMSGSIZE;
279 }
280
281 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
282 struct net_bridge_vlan_group *vg)
283 {
284 struct net_bridge_vlan *v;
285 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
286 u16 flags, pvid;
287 int err = 0;
288
289 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
290 * and mark vlan info with begin and end flags
291 * if vlaninfo represents a range
292 */
293 pvid = br_get_pvid(vg);
294 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
295 flags = 0;
296 if (!br_vlan_should_use(v))
297 continue;
298 if (v->vid == pvid)
299 flags |= BRIDGE_VLAN_INFO_PVID;
300
301 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
302 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
303
304 if (vid_range_start == 0) {
305 goto initvars;
306 } else if ((v->vid - vid_range_end) == 1 &&
307 flags == vid_range_flags) {
308 vid_range_end = v->vid;
309 continue;
310 } else {
311 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
312 vid_range_end,
313 vid_range_flags);
314 if (err)
315 return err;
316 }
317
318 initvars:
319 vid_range_start = v->vid;
320 vid_range_end = v->vid;
321 vid_range_flags = flags;
322 }
323
324 if (vid_range_start != 0) {
325 /* Call it once more to send any left over vlans */
326 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
327 vid_range_end,
328 vid_range_flags);
329 if (err)
330 return err;
331 }
332
333 return 0;
334 }
335
336 static int br_fill_ifvlaninfo(struct sk_buff *skb,
337 struct net_bridge_vlan_group *vg)
338 {
339 struct bridge_vlan_info vinfo;
340 struct net_bridge_vlan *v;
341 u16 pvid;
342
343 pvid = br_get_pvid(vg);
344 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
345 if (!br_vlan_should_use(v))
346 continue;
347
348 vinfo.vid = v->vid;
349 vinfo.flags = 0;
350 if (v->vid == pvid)
351 vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
352
353 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
354 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
355
356 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
357 sizeof(vinfo), &vinfo))
358 goto nla_put_failure;
359 }
360
361 return 0;
362
363 nla_put_failure:
364 return -EMSGSIZE;
365 }
366
367 /*
368 * Create one netlink message for one interface
369 * Contains port and master info as well as carrier and bridge state.
370 */
371 static int br_fill_ifinfo(struct sk_buff *skb,
372 const struct net_bridge_port *port,
373 u32 pid, u32 seq, int event, unsigned int flags,
374 u32 filter_mask, const struct net_device *dev)
375 {
376 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
377 struct net_bridge *br;
378 struct ifinfomsg *hdr;
379 struct nlmsghdr *nlh;
380
381 if (port)
382 br = port->br;
383 else
384 br = netdev_priv(dev);
385
386 br_debug(br, "br_fill_info event %d port %s master %s\n",
387 event, dev->name, br->dev->name);
388
389 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
390 if (nlh == NULL)
391 return -EMSGSIZE;
392
393 hdr = nlmsg_data(nlh);
394 hdr->ifi_family = AF_BRIDGE;
395 hdr->__ifi_pad = 0;
396 hdr->ifi_type = dev->type;
397 hdr->ifi_index = dev->ifindex;
398 hdr->ifi_flags = dev_get_flags(dev);
399 hdr->ifi_change = 0;
400
401 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
402 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
403 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
404 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
405 (dev->addr_len &&
406 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
407 (dev->ifindex != dev_get_iflink(dev) &&
408 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
409 goto nla_put_failure;
410
411 if (event == RTM_NEWLINK && port) {
412 struct nlattr *nest;
413
414 nest = nla_nest_start(skb, IFLA_PROTINFO);
415 if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
416 goto nla_put_failure;
417 nla_nest_end(skb, nest);
418 }
419
420 /* Check if the VID information is requested */
421 if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
422 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
423 struct net_bridge_vlan_group *vg;
424 struct nlattr *af;
425 int err;
426
427 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */
428 rcu_read_lock();
429 if (port)
430 vg = nbp_vlan_group_rcu(port);
431 else
432 vg = br_vlan_group_rcu(br);
433
434 if (!vg || !vg->num_vlans) {
435 rcu_read_unlock();
436 goto done;
437 }
438 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
439 if (!af) {
440 rcu_read_unlock();
441 goto nla_put_failure;
442 }
443 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
444 err = br_fill_ifvlaninfo_compressed(skb, vg);
445 else
446 err = br_fill_ifvlaninfo(skb, vg);
447
448 if (port && (port->flags & BR_VLAN_TUNNEL))
449 err = br_fill_vlan_tunnel_info(skb, vg);
450 rcu_read_unlock();
451 if (err)
452 goto nla_put_failure;
453 nla_nest_end(skb, af);
454 }
455
456 done:
457 nlmsg_end(skb, nlh);
458 return 0;
459
460 nla_put_failure:
461 nlmsg_cancel(skb, nlh);
462 return -EMSGSIZE;
463 }
464
465 /* Notify listeners of a change in bridge or port information */
466 void br_ifinfo_notify(int event, const struct net_bridge *br,
467 const struct net_bridge_port *port)
468 {
469 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
470 struct net_device *dev;
471 struct sk_buff *skb;
472 int err = -ENOBUFS;
473 struct net *net;
474 u16 port_no = 0;
475
476 if (WARN_ON(!port && !br))
477 return;
478
479 if (port) {
480 dev = port->dev;
481 br = port->br;
482 port_no = port->port_no;
483 } else {
484 dev = br->dev;
485 }
486
487 net = dev_net(dev);
488 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event);
489
490 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC);
491 if (skb == NULL)
492 goto errout;
493
494 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev);
495 if (err < 0) {
496 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
497 WARN_ON(err == -EMSGSIZE);
498 kfree_skb(skb);
499 goto errout;
500 }
501 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
502 return;
503 errout:
504 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
505 }
506
507 /*
508 * Dump information about all ports, in response to GETLINK
509 */
510 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
511 struct net_device *dev, u32 filter_mask, int nlflags)
512 {
513 struct net_bridge_port *port = br_port_get_rtnl(dev);
514
515 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
516 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
517 return 0;
518
519 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
520 filter_mask, dev);
521 }
522
523 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
524 int cmd, struct bridge_vlan_info *vinfo, bool *changed,
525 struct netlink_ext_ack *extack)
526 {
527 bool curr_change;
528 int err = 0;
529
530 switch (cmd) {
531 case RTM_SETLINK:
532 if (p) {
533 /* if the MASTER flag is set this will act on the global
534 * per-VLAN entry as well
535 */
536 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags,
537 &curr_change, extack);
538 } else {
539 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
540 err = br_vlan_add(br, vinfo->vid, vinfo->flags,
541 &curr_change, extack);
542 }
543 if (curr_change)
544 *changed = true;
545 break;
546
547 case RTM_DELLINK:
548 if (p) {
549 if (!nbp_vlan_delete(p, vinfo->vid))
550 *changed = true;
551
552 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) &&
553 !br_vlan_delete(p->br, vinfo->vid))
554 *changed = true;
555 } else if (!br_vlan_delete(br, vinfo->vid)) {
556 *changed = true;
557 }
558 break;
559 }
560
561 return err;
562 }
563
564 int br_process_vlan_info(struct net_bridge *br,
565 struct net_bridge_port *p, int cmd,
566 struct bridge_vlan_info *vinfo_curr,
567 struct bridge_vlan_info **vinfo_last,
568 bool *changed,
569 struct netlink_ext_ack *extack)
570 {
571 int err, rtm_cmd;
572
573 if (!br_vlan_valid_id(vinfo_curr->vid, extack))
574 return -EINVAL;
575
576 /* needed for vlan-only NEWVLAN/DELVLAN notifications */
577 rtm_cmd = br_afspec_cmd_to_rtm(cmd);
578
579 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
580 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
581 return -EINVAL;
582 *vinfo_last = vinfo_curr;
583 return 0;
584 }
585
586 if (*vinfo_last) {
587 struct bridge_vlan_info tmp_vinfo;
588 int v, v_change_start = 0;
589
590 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
591 return -EINVAL;
592
593 memcpy(&tmp_vinfo, *vinfo_last,
594 sizeof(struct bridge_vlan_info));
595 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) {
596 bool curr_change = false;
597
598 tmp_vinfo.vid = v;
599 err = br_vlan_info(br, p, cmd, &tmp_vinfo, &curr_change,
600 extack);
601 if (err)
602 break;
603 if (curr_change) {
604 *changed = curr_change;
605 if (!v_change_start)
606 v_change_start = v;
607 } else {
608 /* nothing to notify yet */
609 if (!v_change_start)
610 continue;
611 br_vlan_notify(br, p, v_change_start,
612 v - 1, rtm_cmd);
613 v_change_start = 0;
614 }
615 cond_resched();
616 }
617 /* v_change_start is set only if the last/whole range changed */
618 if (v_change_start)
619 br_vlan_notify(br, p, v_change_start,
620 v - 1, rtm_cmd);
621
622 *vinfo_last = NULL;
623
624 return err;
625 }
626
627 err = br_vlan_info(br, p, cmd, vinfo_curr, changed, extack);
628 if (*changed)
629 br_vlan_notify(br, p, vinfo_curr->vid, 0, rtm_cmd);
630
631 return err;
632 }
633
634 static int br_afspec(struct net_bridge *br,
635 struct net_bridge_port *p,
636 struct nlattr *af_spec,
637 int cmd, bool *changed,
638 struct netlink_ext_ack *extack)
639 {
640 struct bridge_vlan_info *vinfo_curr = NULL;
641 struct bridge_vlan_info *vinfo_last = NULL;
642 struct nlattr *attr;
643 struct vtunnel_info tinfo_last = {};
644 struct vtunnel_info tinfo_curr = {};
645 int err = 0, rem;
646
647 nla_for_each_nested(attr, af_spec, rem) {
648 err = 0;
649 switch (nla_type(attr)) {
650 case IFLA_BRIDGE_VLAN_TUNNEL_INFO:
651 if (!p || !(p->flags & BR_VLAN_TUNNEL))
652 return -EINVAL;
653 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr);
654 if (err)
655 return err;
656 err = br_process_vlan_tunnel_info(br, p, cmd,
657 &tinfo_curr,
658 &tinfo_last,
659 changed);
660 if (err)
661 return err;
662 break;
663 case IFLA_BRIDGE_VLAN_INFO:
664 if (nla_len(attr) != sizeof(struct bridge_vlan_info))
665 return -EINVAL;
666 vinfo_curr = nla_data(attr);
667 err = br_process_vlan_info(br, p, cmd, vinfo_curr,
668 &vinfo_last, changed,
669 extack);
670 if (err)
671 return err;
672 break;
673 }
674 }
675
676 return err;
677 }
678
679 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
680 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
681 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
682 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
683 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
684 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
685 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
686 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
687 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
688 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
689 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
690 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
691 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
692 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 },
693 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 },
694 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 },
695 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 },
696 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 },
697 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 },
698 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 },
699 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 },
700 };
701
702 /* Change the state of the port and notify spanning tree */
703 static int br_set_port_state(struct net_bridge_port *p, u8 state)
704 {
705 if (state > BR_STATE_BLOCKING)
706 return -EINVAL;
707
708 /* if kernel STP is running, don't allow changes */
709 if (p->br->stp_enabled == BR_KERNEL_STP)
710 return -EBUSY;
711
712 /* if device is not up, change is not allowed
713 * if link is not present, only allowable state is disabled
714 */
715 if (!netif_running(p->dev) ||
716 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
717 return -ENETDOWN;
718
719 br_set_state(p, state);
720 br_port_state_selection(p->br);
721 return 0;
722 }
723
724 /* Set/clear or port flags based on attribute */
725 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
726 int attrtype, unsigned long mask)
727 {
728 unsigned long flags;
729 int err;
730
731 if (!tb[attrtype])
732 return 0;
733
734 if (nla_get_u8(tb[attrtype]))
735 flags = p->flags | mask;
736 else
737 flags = p->flags & ~mask;
738
739 err = br_switchdev_set_port_flag(p, flags, mask);
740 if (err)
741 return err;
742
743 p->flags = flags;
744 return 0;
745 }
746
747 /* Process bridge protocol info on port */
748 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
749 {
750 unsigned long old_flags = p->flags;
751 bool br_vlan_tunnel_old = false;
752 int err;
753
754 err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
755 if (err)
756 return err;
757
758 err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
759 if (err)
760 return err;
761
762 err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
763 if (err)
764 return err;
765
766 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
767 if (err)
768 return err;
769
770 err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
771 if (err)
772 return err;
773
774 err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
775 if (err)
776 return err;
777
778 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
779 if (err)
780 return err;
781
782 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST);
783 if (err)
784 return err;
785
786 err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD);
787 if (err)
788 return err;
789
790 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
791 if (err)
792 return err;
793
794 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
795 if (err)
796 return err;
797
798 br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false;
799 err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL);
800 if (err)
801 return err;
802
803 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL))
804 nbp_vlan_tunnel_info_flush(p);
805
806 if (tb[IFLA_BRPORT_COST]) {
807 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
808 if (err)
809 return err;
810 }
811
812 if (tb[IFLA_BRPORT_PRIORITY]) {
813 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
814 if (err)
815 return err;
816 }
817
818 if (tb[IFLA_BRPORT_STATE]) {
819 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
820 if (err)
821 return err;
822 }
823
824 if (tb[IFLA_BRPORT_FLUSH])
825 br_fdb_delete_by_port(p->br, p, 0, 0);
826
827 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
828 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
829 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
830
831 err = br_multicast_set_port_router(p, mcast_router);
832 if (err)
833 return err;
834 }
835 #endif
836
837 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
838 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]);
839
840 if (fwd_mask & BR_GROUPFWD_MACPAUSE)
841 return -EINVAL;
842 p->group_fwd_mask = fwd_mask;
843 }
844
845 err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS,
846 BR_NEIGH_SUPPRESS);
847 if (err)
848 return err;
849
850 err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED);
851 if (err)
852 return err;
853
854 if (tb[IFLA_BRPORT_BACKUP_PORT]) {
855 struct net_device *backup_dev = NULL;
856 u32 backup_ifindex;
857
858 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]);
859 if (backup_ifindex) {
860 backup_dev = __dev_get_by_index(dev_net(p->dev),
861 backup_ifindex);
862 if (!backup_dev)
863 return -ENOENT;
864 }
865
866 err = nbp_backup_change(p, backup_dev);
867 if (err)
868 return err;
869 }
870
871 br_port_flags_change(p, old_flags ^ p->flags);
872 return 0;
873 }
874
875 /* Change state and parameters on port. */
876 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags,
877 struct netlink_ext_ack *extack)
878 {
879 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
880 struct nlattr *tb[IFLA_BRPORT_MAX + 1];
881 struct net_bridge_port *p;
882 struct nlattr *protinfo;
883 struct nlattr *afspec;
884 bool changed = false;
885 int err = 0;
886
887 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
888 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
889 if (!protinfo && !afspec)
890 return 0;
891
892 p = br_port_get_rtnl(dev);
893 /* We want to accept dev as bridge itself if the AF_SPEC
894 * is set to see if someone is setting vlan info on the bridge
895 */
896 if (!p && !afspec)
897 return -EINVAL;
898
899 if (p && protinfo) {
900 if (protinfo->nla_type & NLA_F_NESTED) {
901 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX,
902 protinfo,
903 br_port_policy,
904 NULL);
905 if (err)
906 return err;
907
908 spin_lock_bh(&p->br->lock);
909 err = br_setport(p, tb);
910 spin_unlock_bh(&p->br->lock);
911 } else {
912 /* Binary compatibility with old RSTP */
913 if (nla_len(protinfo) < sizeof(u8))
914 return -EINVAL;
915
916 spin_lock_bh(&p->br->lock);
917 err = br_set_port_state(p, nla_get_u8(protinfo));
918 spin_unlock_bh(&p->br->lock);
919 }
920 if (err)
921 goto out;
922 changed = true;
923 }
924
925 if (afspec)
926 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack);
927
928 if (changed)
929 br_ifinfo_notify(RTM_NEWLINK, br, p);
930 out:
931 return err;
932 }
933
934 /* Delete port information */
935 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
936 {
937 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
938 struct net_bridge_port *p;
939 struct nlattr *afspec;
940 bool changed = false;
941 int err = 0;
942
943 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
944 if (!afspec)
945 return 0;
946
947 p = br_port_get_rtnl(dev);
948 /* We want to accept dev as bridge itself as well */
949 if (!p && !(dev->priv_flags & IFF_EBRIDGE))
950 return -EINVAL;
951
952 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL);
953 if (changed)
954 /* Send RTM_NEWLINK because userspace
955 * expects RTM_NEWLINK for vlan dels
956 */
957 br_ifinfo_notify(RTM_NEWLINK, br, p);
958
959 return err;
960 }
961
962 static int br_validate(struct nlattr *tb[], struct nlattr *data[],
963 struct netlink_ext_ack *extack)
964 {
965 if (tb[IFLA_ADDRESS]) {
966 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
967 return -EINVAL;
968 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
969 return -EADDRNOTAVAIL;
970 }
971
972 if (!data)
973 return 0;
974
975 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
976 if (data[IFLA_BR_VLAN_PROTOCOL]) {
977 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) {
978 case htons(ETH_P_8021Q):
979 case htons(ETH_P_8021AD):
980 break;
981 default:
982 return -EPROTONOSUPPORT;
983 }
984 }
985
986 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
987 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
988
989 if (defpvid >= VLAN_VID_MASK)
990 return -EINVAL;
991 }
992 #endif
993
994 return 0;
995 }
996
997 static int br_port_slave_changelink(struct net_device *brdev,
998 struct net_device *dev,
999 struct nlattr *tb[],
1000 struct nlattr *data[],
1001 struct netlink_ext_ack *extack)
1002 {
1003 struct net_bridge *br = netdev_priv(brdev);
1004 int ret;
1005
1006 if (!data)
1007 return 0;
1008
1009 spin_lock_bh(&br->lock);
1010 ret = br_setport(br_port_get_rtnl(dev), data);
1011 spin_unlock_bh(&br->lock);
1012
1013 return ret;
1014 }
1015
1016 static int br_port_fill_slave_info(struct sk_buff *skb,
1017 const struct net_device *brdev,
1018 const struct net_device *dev)
1019 {
1020 return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
1021 }
1022
1023 static size_t br_port_get_slave_size(const struct net_device *brdev,
1024 const struct net_device *dev)
1025 {
1026 return br_port_info_size();
1027 }
1028
1029 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
1030 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
1031 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
1032 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
1033 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
1034 [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
1035 [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
1036 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
1037 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
1038 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
1039 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
1040 .len = ETH_ALEN },
1041 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
1042 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
1043 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
1044 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
1045 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
1046 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
1047 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
1048 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
1049 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
1050 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
1051 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
1052 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
1053 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
1054 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
1055 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
1056 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
1057 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
1058 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
1059 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
1060 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
1061 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
1062 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
1063 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 },
1064 [IFLA_BR_MULTI_BOOLOPT] = { .type = NLA_EXACT_LEN,
1065 .len = sizeof(struct br_boolopt_multi) },
1066 };
1067
1068 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
1069 struct nlattr *data[],
1070 struct netlink_ext_ack *extack)
1071 {
1072 struct net_bridge *br = netdev_priv(brdev);
1073 int err;
1074
1075 if (!data)
1076 return 0;
1077
1078 if (data[IFLA_BR_FORWARD_DELAY]) {
1079 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
1080 if (err)
1081 return err;
1082 }
1083
1084 if (data[IFLA_BR_HELLO_TIME]) {
1085 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
1086 if (err)
1087 return err;
1088 }
1089
1090 if (data[IFLA_BR_MAX_AGE]) {
1091 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
1092 if (err)
1093 return err;
1094 }
1095
1096 if (data[IFLA_BR_AGEING_TIME]) {
1097 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME]));
1098 if (err)
1099 return err;
1100 }
1101
1102 if (data[IFLA_BR_STP_STATE]) {
1103 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
1104
1105 br_stp_set_enabled(br, stp_enabled);
1106 }
1107
1108 if (data[IFLA_BR_PRIORITY]) {
1109 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
1110
1111 br_stp_set_bridge_priority(br, priority);
1112 }
1113
1114 if (data[IFLA_BR_VLAN_FILTERING]) {
1115 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
1116
1117 err = __br_vlan_filter_toggle(br, vlan_filter);
1118 if (err)
1119 return err;
1120 }
1121
1122 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1123 if (data[IFLA_BR_VLAN_PROTOCOL]) {
1124 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
1125
1126 err = __br_vlan_set_proto(br, vlan_proto);
1127 if (err)
1128 return err;
1129 }
1130
1131 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1132 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1133
1134 err = __br_vlan_set_default_pvid(br, defpvid, extack);
1135 if (err)
1136 return err;
1137 }
1138
1139 if (data[IFLA_BR_VLAN_STATS_ENABLED]) {
1140 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]);
1141
1142 err = br_vlan_set_stats(br, vlan_stats);
1143 if (err)
1144 return err;
1145 }
1146
1147 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) {
1148 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]);
1149
1150 err = br_vlan_set_stats_per_port(br, per_port);
1151 if (err)
1152 return err;
1153 }
1154 #endif
1155
1156 if (data[IFLA_BR_GROUP_FWD_MASK]) {
1157 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
1158
1159 if (fwd_mask & BR_GROUPFWD_RESTRICTED)
1160 return -EINVAL;
1161 br->group_fwd_mask = fwd_mask;
1162 }
1163
1164 if (data[IFLA_BR_GROUP_ADDR]) {
1165 u8 new_addr[ETH_ALEN];
1166
1167 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
1168 return -EINVAL;
1169 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
1170 if (!is_link_local_ether_addr(new_addr))
1171 return -EINVAL;
1172 if (new_addr[5] == 1 || /* 802.3x Pause address */
1173 new_addr[5] == 2 || /* 802.3ad Slow protocols */
1174 new_addr[5] == 3) /* 802.1X PAE address */
1175 return -EINVAL;
1176 spin_lock_bh(&br->lock);
1177 memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
1178 spin_unlock_bh(&br->lock);
1179 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true);
1180 br_recalculate_fwd_mask(br);
1181 }
1182
1183 if (data[IFLA_BR_FDB_FLUSH])
1184 br_fdb_flush(br);
1185
1186 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1187 if (data[IFLA_BR_MCAST_ROUTER]) {
1188 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
1189
1190 err = br_multicast_set_router(br, multicast_router);
1191 if (err)
1192 return err;
1193 }
1194
1195 if (data[IFLA_BR_MCAST_SNOOPING]) {
1196 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
1197
1198 br_multicast_toggle(br, mcast_snooping);
1199 }
1200
1201 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
1202 u8 val;
1203
1204 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
1205 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val);
1206 }
1207
1208 if (data[IFLA_BR_MCAST_QUERIER]) {
1209 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
1210
1211 err = br_multicast_set_querier(br, mcast_querier);
1212 if (err)
1213 return err;
1214 }
1215
1216 if (data[IFLA_BR_MCAST_HASH_ELASTICITY])
1217 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n",
1218 RHT_ELASTICITY);
1219
1220 if (data[IFLA_BR_MCAST_HASH_MAX])
1221 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
1222
1223 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
1224 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
1225
1226 br->multicast_last_member_count = val;
1227 }
1228
1229 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
1230 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
1231
1232 br->multicast_startup_query_count = val;
1233 }
1234
1235 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
1236 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
1237
1238 br->multicast_last_member_interval = clock_t_to_jiffies(val);
1239 }
1240
1241 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
1242 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
1243
1244 br->multicast_membership_interval = clock_t_to_jiffies(val);
1245 }
1246
1247 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
1248 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
1249
1250 br->multicast_querier_interval = clock_t_to_jiffies(val);
1251 }
1252
1253 if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
1254 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
1255
1256 br->multicast_query_interval = clock_t_to_jiffies(val);
1257 }
1258
1259 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
1260 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
1261
1262 br->multicast_query_response_interval = clock_t_to_jiffies(val);
1263 }
1264
1265 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
1266 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
1267
1268 br->multicast_startup_query_interval = clock_t_to_jiffies(val);
1269 }
1270
1271 if (data[IFLA_BR_MCAST_STATS_ENABLED]) {
1272 __u8 mcast_stats;
1273
1274 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]);
1275 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats);
1276 }
1277
1278 if (data[IFLA_BR_MCAST_IGMP_VERSION]) {
1279 __u8 igmp_version;
1280
1281 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]);
1282 err = br_multicast_set_igmp_version(br, igmp_version);
1283 if (err)
1284 return err;
1285 }
1286
1287 #if IS_ENABLED(CONFIG_IPV6)
1288 if (data[IFLA_BR_MCAST_MLD_VERSION]) {
1289 __u8 mld_version;
1290
1291 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
1292 err = br_multicast_set_mld_version(br, mld_version);
1293 if (err)
1294 return err;
1295 }
1296 #endif
1297 #endif
1298 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1299 if (data[IFLA_BR_NF_CALL_IPTABLES]) {
1300 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
1301
1302 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val);
1303 }
1304
1305 if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
1306 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
1307
1308 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val);
1309 }
1310
1311 if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
1312 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
1313
1314 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val);
1315 }
1316 #endif
1317
1318 if (data[IFLA_BR_MULTI_BOOLOPT]) {
1319 struct br_boolopt_multi *bm;
1320
1321 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]);
1322 err = br_boolopt_multi_toggle(br, bm, extack);
1323 if (err)
1324 return err;
1325 }
1326
1327 return 0;
1328 }
1329
1330 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
1331 struct nlattr *tb[], struct nlattr *data[],
1332 struct netlink_ext_ack *extack)
1333 {
1334 struct net_bridge *br = netdev_priv(dev);
1335 int err;
1336
1337 err = register_netdevice(dev);
1338 if (err)
1339 return err;
1340
1341 if (tb[IFLA_ADDRESS]) {
1342 spin_lock_bh(&br->lock);
1343 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
1344 spin_unlock_bh(&br->lock);
1345 }
1346
1347 err = br_changelink(dev, tb, data, extack);
1348 if (err)
1349 br_dev_delete(dev, NULL);
1350
1351 return err;
1352 }
1353
1354 static size_t br_get_size(const struct net_device *brdev)
1355 {
1356 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */
1357 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */
1358 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */
1359 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */
1360 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */
1361 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */
1362 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */
1363 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1364 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
1365 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */
1366 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */
1367 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */
1368 #endif
1369 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */
1370 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */
1371 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */
1372 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */
1373 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */
1374 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */
1375 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
1376 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
1377 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
1378 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
1379 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
1380 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */
1381 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1382 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */
1383 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */
1384 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
1385 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */
1386 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */
1387 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */
1388 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */
1389 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
1390 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
1391 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
1392 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
1393 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
1394 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
1395 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
1396 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
1397 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */
1398 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */
1399 #endif
1400 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1401 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */
1402 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */
1403 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */
1404 #endif
1405 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */
1406 0;
1407 }
1408
1409 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
1410 {
1411 struct net_bridge *br = netdev_priv(brdev);
1412 u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
1413 u32 hello_time = jiffies_to_clock_t(br->hello_time);
1414 u32 age_time = jiffies_to_clock_t(br->max_age);
1415 u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
1416 u32 stp_enabled = br->stp_enabled;
1417 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
1418 u8 vlan_enabled = br_vlan_enabled(br->dev);
1419 struct br_boolopt_multi bm;
1420 u64 clockval;
1421
1422 clockval = br_timer_value(&br->hello_timer);
1423 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD))
1424 return -EMSGSIZE;
1425 clockval = br_timer_value(&br->tcn_timer);
1426 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD))
1427 return -EMSGSIZE;
1428 clockval = br_timer_value(&br->topology_change_timer);
1429 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval,
1430 IFLA_BR_PAD))
1431 return -EMSGSIZE;
1432 clockval = br_timer_value(&br->gc_work.timer);
1433 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD))
1434 return -EMSGSIZE;
1435
1436 br_boolopt_multi_get(br, &bm);
1437 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
1438 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
1439 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
1440 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
1441 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
1442 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
1443 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
1444 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
1445 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
1446 &br->bridge_id) ||
1447 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
1448 &br->designated_root) ||
1449 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
1450 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
1451 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
1452 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
1453 br->topology_change_detected) ||
1454 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) ||
1455 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm))
1456 return -EMSGSIZE;
1457
1458 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1459 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
1460 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
1461 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED,
1462 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) ||
1463 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT,
1464 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)))
1465 return -EMSGSIZE;
1466 #endif
1467 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1468 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
1469 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING,
1470 br_opt_get(br, BROPT_MULTICAST_ENABLED)) ||
1471 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
1472 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) ||
1473 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER,
1474 br_opt_get(br, BROPT_MULTICAST_QUERIER)) ||
1475 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED,
1476 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) ||
1477 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) ||
1478 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
1479 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
1480 br->multicast_last_member_count) ||
1481 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
1482 br->multicast_startup_query_count) ||
1483 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
1484 br->multicast_igmp_version))
1485 return -EMSGSIZE;
1486 #if IS_ENABLED(CONFIG_IPV6)
1487 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
1488 br->multicast_mld_version))
1489 return -EMSGSIZE;
1490 #endif
1491 clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
1492 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
1493 IFLA_BR_PAD))
1494 return -EMSGSIZE;
1495 clockval = jiffies_to_clock_t(br->multicast_membership_interval);
1496 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval,
1497 IFLA_BR_PAD))
1498 return -EMSGSIZE;
1499 clockval = jiffies_to_clock_t(br->multicast_querier_interval);
1500 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval,
1501 IFLA_BR_PAD))
1502 return -EMSGSIZE;
1503 clockval = jiffies_to_clock_t(br->multicast_query_interval);
1504 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval,
1505 IFLA_BR_PAD))
1506 return -EMSGSIZE;
1507 clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
1508 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval,
1509 IFLA_BR_PAD))
1510 return -EMSGSIZE;
1511 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
1512 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval,
1513 IFLA_BR_PAD))
1514 return -EMSGSIZE;
1515 #endif
1516 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1517 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
1518 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) ||
1519 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
1520 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) ||
1521 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
1522 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0))
1523 return -EMSGSIZE;
1524 #endif
1525
1526 return 0;
1527 }
1528
1529 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
1530 {
1531 struct net_bridge_port *p = NULL;
1532 struct net_bridge_vlan_group *vg;
1533 struct net_bridge_vlan *v;
1534 struct net_bridge *br;
1535 int numvls = 0;
1536
1537 switch (attr) {
1538 case IFLA_STATS_LINK_XSTATS:
1539 br = netdev_priv(dev);
1540 vg = br_vlan_group(br);
1541 break;
1542 case IFLA_STATS_LINK_XSTATS_SLAVE:
1543 p = br_port_get_rtnl(dev);
1544 if (!p)
1545 return 0;
1546 br = p->br;
1547 vg = nbp_vlan_group(p);
1548 break;
1549 default:
1550 return 0;
1551 }
1552
1553 if (vg) {
1554 /* we need to count all, even placeholder entries */
1555 list_for_each_entry(v, &vg->vlan_list, vlist)
1556 numvls++;
1557 }
1558
1559 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) +
1560 nla_total_size(sizeof(struct br_mcast_stats)) +
1561 nla_total_size(0);
1562 }
1563
1564 static int br_fill_linkxstats(struct sk_buff *skb,
1565 const struct net_device *dev,
1566 int *prividx, int attr)
1567 {
1568 struct nlattr *nla __maybe_unused;
1569 struct net_bridge_port *p = NULL;
1570 struct net_bridge_vlan_group *vg;
1571 struct net_bridge_vlan *v;
1572 struct net_bridge *br;
1573 struct nlattr *nest;
1574 int vl_idx = 0;
1575
1576 switch (attr) {
1577 case IFLA_STATS_LINK_XSTATS:
1578 br = netdev_priv(dev);
1579 vg = br_vlan_group(br);
1580 break;
1581 case IFLA_STATS_LINK_XSTATS_SLAVE:
1582 p = br_port_get_rtnl(dev);
1583 if (!p)
1584 return 0;
1585 br = p->br;
1586 vg = nbp_vlan_group(p);
1587 break;
1588 default:
1589 return -EINVAL;
1590 }
1591
1592 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE);
1593 if (!nest)
1594 return -EMSGSIZE;
1595
1596 if (vg) {
1597 u16 pvid;
1598
1599 pvid = br_get_pvid(vg);
1600 list_for_each_entry(v, &vg->vlan_list, vlist) {
1601 struct bridge_vlan_xstats vxi;
1602 struct br_vlan_stats stats;
1603
1604 if (++vl_idx < *prividx)
1605 continue;
1606 memset(&vxi, 0, sizeof(vxi));
1607 vxi.vid = v->vid;
1608 vxi.flags = v->flags;
1609 if (v->vid == pvid)
1610 vxi.flags |= BRIDGE_VLAN_INFO_PVID;
1611 br_vlan_get_stats(v, &stats);
1612 vxi.rx_bytes = stats.rx_bytes;
1613 vxi.rx_packets = stats.rx_packets;
1614 vxi.tx_bytes = stats.tx_bytes;
1615 vxi.tx_packets = stats.tx_packets;
1616
1617 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi))
1618 goto nla_put_failure;
1619 }
1620 }
1621
1622 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1623 if (++vl_idx >= *prividx) {
1624 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST,
1625 sizeof(struct br_mcast_stats),
1626 BRIDGE_XSTATS_PAD);
1627 if (!nla)
1628 goto nla_put_failure;
1629 br_multicast_get_stats(br, p, nla_data(nla));
1630 }
1631 #endif
1632
1633 if (p) {
1634 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP,
1635 sizeof(p->stp_xstats),
1636 BRIDGE_XSTATS_PAD);
1637 if (!nla)
1638 goto nla_put_failure;
1639
1640 spin_lock_bh(&br->lock);
1641 memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats));
1642 spin_unlock_bh(&br->lock);
1643 }
1644
1645 nla_nest_end(skb, nest);
1646 *prividx = 0;
1647
1648 return 0;
1649
1650 nla_put_failure:
1651 nla_nest_end(skb, nest);
1652 *prividx = vl_idx;
1653
1654 return -EMSGSIZE;
1655 }
1656
1657 static struct rtnl_af_ops br_af_ops __read_mostly = {
1658 .family = AF_BRIDGE,
1659 .get_link_af_size = br_get_link_af_size_filtered,
1660 };
1661
1662 struct rtnl_link_ops br_link_ops __read_mostly = {
1663 .kind = "bridge",
1664 .priv_size = sizeof(struct net_bridge),
1665 .setup = br_dev_setup,
1666 .maxtype = IFLA_BR_MAX,
1667 .policy = br_policy,
1668 .validate = br_validate,
1669 .newlink = br_dev_newlink,
1670 .changelink = br_changelink,
1671 .dellink = br_dev_delete,
1672 .get_size = br_get_size,
1673 .fill_info = br_fill_info,
1674 .fill_linkxstats = br_fill_linkxstats,
1675 .get_linkxstats_size = br_get_linkxstats_size,
1676
1677 .slave_maxtype = IFLA_BRPORT_MAX,
1678 .slave_policy = br_port_policy,
1679 .slave_changelink = br_port_slave_changelink,
1680 .get_slave_size = br_port_get_slave_size,
1681 .fill_slave_info = br_port_fill_slave_info,
1682 };
1683
1684 int __init br_netlink_init(void)
1685 {
1686 int err;
1687
1688 br_mdb_init();
1689 br_vlan_rtnl_init();
1690 rtnl_af_register(&br_af_ops);
1691
1692 err = rtnl_link_register(&br_link_ops);
1693 if (err)
1694 goto out_af;
1695
1696 return 0;
1697
1698 out_af:
1699 rtnl_af_unregister(&br_af_ops);
1700 br_mdb_uninit();
1701 return err;
1702 }
1703
1704 void br_netlink_fini(void)
1705 {
1706 br_mdb_uninit();
1707 br_vlan_rtnl_uninit();
1708 rtnl_af_unregister(&br_af_ops);
1709 rtnl_link_unregister(&br_link_ops);
1710 }
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