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