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Merge tag 'ceph-for-5.8-rc1' of git://github.com/ceph/ceph-client
[mirror_ubuntu-jammy-kernel.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 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_RING_OPEN */
155 + 0;
156 }
157
158 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
159 {
160 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
161 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
162 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
163 + nla_total_size(4) /* IFLA_MASTER */
164 + nla_total_size(4) /* IFLA_MTU */
165 + nla_total_size(4) /* IFLA_LINK */
166 + nla_total_size(1) /* IFLA_OPERSTATE */
167 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
168 + nla_total_size(br_get_link_af_size_filtered(dev,
169 filter_mask)) /* IFLA_AF_SPEC */
170 + nla_total_size(4); /* IFLA_BRPORT_BACKUP_PORT */
171 }
172
173 static int br_port_fill_attrs(struct sk_buff *skb,
174 const struct net_bridge_port *p)
175 {
176 u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
177 struct net_bridge_port *backup_p;
178 u64 timerval;
179
180 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
181 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
182 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
183 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
184 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
185 nla_put_u8(skb, IFLA_BRPORT_PROTECT,
186 !!(p->flags & BR_ROOT_BLOCK)) ||
187 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE,
188 !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
189 nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST,
190 !!(p->flags & BR_MULTICAST_TO_UNICAST)) ||
191 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
192 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD,
193 !!(p->flags & BR_FLOOD)) ||
194 nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD,
195 !!(p->flags & BR_MCAST_FLOOD)) ||
196 nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD,
197 !!(p->flags & BR_BCAST_FLOOD)) ||
198 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
199 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
200 !!(p->flags & BR_PROXYARP_WIFI)) ||
201 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
202 &p->designated_root) ||
203 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
204 &p->designated_bridge) ||
205 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
206 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
207 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
208 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
209 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
210 p->topology_change_ack) ||
211 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) ||
212 nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags &
213 BR_VLAN_TUNNEL)) ||
214 nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) ||
215 nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS,
216 !!(p->flags & BR_NEIGH_SUPPRESS)) ||
217 nla_put_u8(skb, IFLA_BRPORT_MRP_RING_OPEN, !!(p->flags &
218 BR_MRP_LOST_CONT)) ||
219 nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED)))
220 return -EMSGSIZE;
221
222 timerval = br_timer_value(&p->message_age_timer);
223 if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval,
224 IFLA_BRPORT_PAD))
225 return -EMSGSIZE;
226 timerval = br_timer_value(&p->forward_delay_timer);
227 if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval,
228 IFLA_BRPORT_PAD))
229 return -EMSGSIZE;
230 timerval = br_timer_value(&p->hold_timer);
231 if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval,
232 IFLA_BRPORT_PAD))
233 return -EMSGSIZE;
234
235 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
236 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
237 p->multicast_router))
238 return -EMSGSIZE;
239 #endif
240
241 /* we might be called only with br->lock */
242 rcu_read_lock();
243 backup_p = rcu_dereference(p->backup_port);
244 if (backup_p)
245 nla_put_u32(skb, IFLA_BRPORT_BACKUP_PORT,
246 backup_p->dev->ifindex);
247 rcu_read_unlock();
248
249 return 0;
250 }
251
252 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
253 u16 vid_end, u16 flags)
254 {
255 struct bridge_vlan_info vinfo;
256
257 if ((vid_end - vid_start) > 0) {
258 /* add range to skb */
259 vinfo.vid = vid_start;
260 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
261 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
262 sizeof(vinfo), &vinfo))
263 goto nla_put_failure;
264
265 vinfo.vid = vid_end;
266 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
267 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
268 sizeof(vinfo), &vinfo))
269 goto nla_put_failure;
270 } else {
271 vinfo.vid = vid_start;
272 vinfo.flags = flags;
273 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
274 sizeof(vinfo), &vinfo))
275 goto nla_put_failure;
276 }
277
278 return 0;
279
280 nla_put_failure:
281 return -EMSGSIZE;
282 }
283
284 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
285 struct net_bridge_vlan_group *vg)
286 {
287 struct net_bridge_vlan *v;
288 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
289 u16 flags, pvid;
290 int err = 0;
291
292 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
293 * and mark vlan info with begin and end flags
294 * if vlaninfo represents a range
295 */
296 pvid = br_get_pvid(vg);
297 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
298 flags = 0;
299 if (!br_vlan_should_use(v))
300 continue;
301 if (v->vid == pvid)
302 flags |= BRIDGE_VLAN_INFO_PVID;
303
304 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
305 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
306
307 if (vid_range_start == 0) {
308 goto initvars;
309 } else if ((v->vid - vid_range_end) == 1 &&
310 flags == vid_range_flags) {
311 vid_range_end = v->vid;
312 continue;
313 } else {
314 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
315 vid_range_end,
316 vid_range_flags);
317 if (err)
318 return err;
319 }
320
321 initvars:
322 vid_range_start = v->vid;
323 vid_range_end = v->vid;
324 vid_range_flags = flags;
325 }
326
327 if (vid_range_start != 0) {
328 /* Call it once more to send any left over vlans */
329 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
330 vid_range_end,
331 vid_range_flags);
332 if (err)
333 return err;
334 }
335
336 return 0;
337 }
338
339 static int br_fill_ifvlaninfo(struct sk_buff *skb,
340 struct net_bridge_vlan_group *vg)
341 {
342 struct bridge_vlan_info vinfo;
343 struct net_bridge_vlan *v;
344 u16 pvid;
345
346 pvid = br_get_pvid(vg);
347 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
348 if (!br_vlan_should_use(v))
349 continue;
350
351 vinfo.vid = v->vid;
352 vinfo.flags = 0;
353 if (v->vid == pvid)
354 vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
355
356 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
357 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
358
359 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
360 sizeof(vinfo), &vinfo))
361 goto nla_put_failure;
362 }
363
364 return 0;
365
366 nla_put_failure:
367 return -EMSGSIZE;
368 }
369
370 /*
371 * Create one netlink message for one interface
372 * Contains port and master info as well as carrier and bridge state.
373 */
374 static int br_fill_ifinfo(struct sk_buff *skb,
375 const struct net_bridge_port *port,
376 u32 pid, u32 seq, int event, unsigned int flags,
377 u32 filter_mask, const struct net_device *dev)
378 {
379 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
380 struct net_bridge *br;
381 struct ifinfomsg *hdr;
382 struct nlmsghdr *nlh;
383
384 if (port)
385 br = port->br;
386 else
387 br = netdev_priv(dev);
388
389 br_debug(br, "br_fill_info event %d port %s master %s\n",
390 event, dev->name, br->dev->name);
391
392 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
393 if (nlh == NULL)
394 return -EMSGSIZE;
395
396 hdr = nlmsg_data(nlh);
397 hdr->ifi_family = AF_BRIDGE;
398 hdr->__ifi_pad = 0;
399 hdr->ifi_type = dev->type;
400 hdr->ifi_index = dev->ifindex;
401 hdr->ifi_flags = dev_get_flags(dev);
402 hdr->ifi_change = 0;
403
404 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
405 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
406 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
407 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
408 (dev->addr_len &&
409 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
410 (dev->ifindex != dev_get_iflink(dev) &&
411 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
412 goto nla_put_failure;
413
414 if (event == RTM_NEWLINK && port) {
415 struct nlattr *nest;
416
417 nest = nla_nest_start(skb, IFLA_PROTINFO);
418 if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
419 goto nla_put_failure;
420 nla_nest_end(skb, nest);
421 }
422
423 /* Check if the VID information is requested */
424 if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
425 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
426 struct net_bridge_vlan_group *vg;
427 struct nlattr *af;
428 int err;
429
430 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */
431 rcu_read_lock();
432 if (port)
433 vg = nbp_vlan_group_rcu(port);
434 else
435 vg = br_vlan_group_rcu(br);
436
437 if (!vg || !vg->num_vlans) {
438 rcu_read_unlock();
439 goto done;
440 }
441 af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
442 if (!af) {
443 rcu_read_unlock();
444 goto nla_put_failure;
445 }
446 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
447 err = br_fill_ifvlaninfo_compressed(skb, vg);
448 else
449 err = br_fill_ifvlaninfo(skb, vg);
450
451 if (port && (port->flags & BR_VLAN_TUNNEL))
452 err = br_fill_vlan_tunnel_info(skb, vg);
453 rcu_read_unlock();
454 if (err)
455 goto nla_put_failure;
456 nla_nest_end(skb, af);
457 }
458
459 done:
460 nlmsg_end(skb, nlh);
461 return 0;
462
463 nla_put_failure:
464 nlmsg_cancel(skb, nlh);
465 return -EMSGSIZE;
466 }
467
468 /* Notify listeners of a change in bridge or port information */
469 void br_ifinfo_notify(int event, const struct net_bridge *br,
470 const struct net_bridge_port *port)
471 {
472 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
473 struct net_device *dev;
474 struct sk_buff *skb;
475 int err = -ENOBUFS;
476 struct net *net;
477 u16 port_no = 0;
478
479 if (WARN_ON(!port && !br))
480 return;
481
482 if (port) {
483 dev = port->dev;
484 br = port->br;
485 port_no = port->port_no;
486 } else {
487 dev = br->dev;
488 }
489
490 net = dev_net(dev);
491 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event);
492
493 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC);
494 if (skb == NULL)
495 goto errout;
496
497 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev);
498 if (err < 0) {
499 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
500 WARN_ON(err == -EMSGSIZE);
501 kfree_skb(skb);
502 goto errout;
503 }
504 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
505 return;
506 errout:
507 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
508 }
509
510 /*
511 * Dump information about all ports, in response to GETLINK
512 */
513 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
514 struct net_device *dev, u32 filter_mask, int nlflags)
515 {
516 struct net_bridge_port *port = br_port_get_rtnl(dev);
517
518 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
519 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
520 return 0;
521
522 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
523 filter_mask, dev);
524 }
525
526 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
527 int cmd, struct bridge_vlan_info *vinfo, bool *changed,
528 struct netlink_ext_ack *extack)
529 {
530 bool curr_change;
531 int err = 0;
532
533 switch (cmd) {
534 case RTM_SETLINK:
535 if (p) {
536 /* if the MASTER flag is set this will act on the global
537 * per-VLAN entry as well
538 */
539 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags,
540 &curr_change, extack);
541 } else {
542 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
543 err = br_vlan_add(br, vinfo->vid, vinfo->flags,
544 &curr_change, extack);
545 }
546 if (curr_change)
547 *changed = true;
548 break;
549
550 case RTM_DELLINK:
551 if (p) {
552 if (!nbp_vlan_delete(p, vinfo->vid))
553 *changed = true;
554
555 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) &&
556 !br_vlan_delete(p->br, vinfo->vid))
557 *changed = true;
558 } else if (!br_vlan_delete(br, vinfo->vid)) {
559 *changed = true;
560 }
561 break;
562 }
563
564 return err;
565 }
566
567 int br_process_vlan_info(struct net_bridge *br,
568 struct net_bridge_port *p, int cmd,
569 struct bridge_vlan_info *vinfo_curr,
570 struct bridge_vlan_info **vinfo_last,
571 bool *changed,
572 struct netlink_ext_ack *extack)
573 {
574 int err, rtm_cmd;
575
576 if (!br_vlan_valid_id(vinfo_curr->vid, extack))
577 return -EINVAL;
578
579 /* needed for vlan-only NEWVLAN/DELVLAN notifications */
580 rtm_cmd = br_afspec_cmd_to_rtm(cmd);
581
582 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
583 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
584 return -EINVAL;
585 *vinfo_last = vinfo_curr;
586 return 0;
587 }
588
589 if (*vinfo_last) {
590 struct bridge_vlan_info tmp_vinfo;
591 int v, v_change_start = 0;
592
593 if (!br_vlan_valid_range(vinfo_curr, *vinfo_last, extack))
594 return -EINVAL;
595
596 memcpy(&tmp_vinfo, *vinfo_last,
597 sizeof(struct bridge_vlan_info));
598 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) {
599 bool curr_change = false;
600
601 tmp_vinfo.vid = v;
602 err = br_vlan_info(br, p, cmd, &tmp_vinfo, &curr_change,
603 extack);
604 if (err)
605 break;
606 if (curr_change) {
607 *changed = curr_change;
608 if (!v_change_start)
609 v_change_start = v;
610 } else {
611 /* nothing to notify yet */
612 if (!v_change_start)
613 continue;
614 br_vlan_notify(br, p, v_change_start,
615 v - 1, rtm_cmd);
616 v_change_start = 0;
617 }
618 cond_resched();
619 }
620 /* v_change_start is set only if the last/whole range changed */
621 if (v_change_start)
622 br_vlan_notify(br, p, v_change_start,
623 v - 1, rtm_cmd);
624
625 *vinfo_last = NULL;
626
627 return err;
628 }
629
630 err = br_vlan_info(br, p, cmd, vinfo_curr, changed, extack);
631 if (*changed)
632 br_vlan_notify(br, p, vinfo_curr->vid, 0, rtm_cmd);
633
634 return err;
635 }
636
637 static int br_afspec(struct net_bridge *br,
638 struct net_bridge_port *p,
639 struct nlattr *af_spec,
640 int cmd, bool *changed,
641 struct netlink_ext_ack *extack)
642 {
643 struct bridge_vlan_info *vinfo_curr = NULL;
644 struct bridge_vlan_info *vinfo_last = NULL;
645 struct nlattr *attr;
646 struct vtunnel_info tinfo_last = {};
647 struct vtunnel_info tinfo_curr = {};
648 int err = 0, rem;
649
650 nla_for_each_nested(attr, af_spec, rem) {
651 err = 0;
652 switch (nla_type(attr)) {
653 case IFLA_BRIDGE_VLAN_TUNNEL_INFO:
654 if (!p || !(p->flags & BR_VLAN_TUNNEL))
655 return -EINVAL;
656 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr);
657 if (err)
658 return err;
659 err = br_process_vlan_tunnel_info(br, p, cmd,
660 &tinfo_curr,
661 &tinfo_last,
662 changed);
663 if (err)
664 return err;
665 break;
666 case IFLA_BRIDGE_VLAN_INFO:
667 if (nla_len(attr) != sizeof(struct bridge_vlan_info))
668 return -EINVAL;
669 vinfo_curr = nla_data(attr);
670 err = br_process_vlan_info(br, p, cmd, vinfo_curr,
671 &vinfo_last, changed,
672 extack);
673 if (err)
674 return err;
675 break;
676 case IFLA_BRIDGE_MRP:
677 err = br_mrp_parse(br, p, attr, cmd, extack);
678 if (err)
679 return err;
680 break;
681 }
682 }
683
684 return err;
685 }
686
687 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
688 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
689 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
690 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
691 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
692 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
693 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
694 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
695 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
696 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
697 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
698 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
699 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
700 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 },
701 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 },
702 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 },
703 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 },
704 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 },
705 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 },
706 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 },
707 [IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 },
708 };
709
710 /* Change the state of the port and notify spanning tree */
711 static int br_set_port_state(struct net_bridge_port *p, u8 state)
712 {
713 if (state > BR_STATE_BLOCKING)
714 return -EINVAL;
715
716 /* if kernel STP is running, don't allow changes */
717 if (p->br->stp_enabled == BR_KERNEL_STP)
718 return -EBUSY;
719
720 /* if device is not up, change is not allowed
721 * if link is not present, only allowable state is disabled
722 */
723 if (!netif_running(p->dev) ||
724 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
725 return -ENETDOWN;
726
727 br_set_state(p, state);
728 br_port_state_selection(p->br);
729 return 0;
730 }
731
732 /* Set/clear or port flags based on attribute */
733 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
734 int attrtype, unsigned long mask)
735 {
736 unsigned long flags;
737 int err;
738
739 if (!tb[attrtype])
740 return 0;
741
742 if (nla_get_u8(tb[attrtype]))
743 flags = p->flags | mask;
744 else
745 flags = p->flags & ~mask;
746
747 err = br_switchdev_set_port_flag(p, flags, mask);
748 if (err)
749 return err;
750
751 p->flags = flags;
752 return 0;
753 }
754
755 /* Process bridge protocol info on port */
756 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
757 {
758 unsigned long old_flags = p->flags;
759 bool br_vlan_tunnel_old = false;
760 int err;
761
762 err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
763 if (err)
764 return err;
765
766 err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
767 if (err)
768 return err;
769
770 err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
771 if (err)
772 return err;
773
774 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
775 if (err)
776 return err;
777
778 err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
779 if (err)
780 return err;
781
782 err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
783 if (err)
784 return err;
785
786 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
787 if (err)
788 return err;
789
790 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST);
791 if (err)
792 return err;
793
794 err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD);
795 if (err)
796 return err;
797
798 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
799 if (err)
800 return err;
801
802 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
803 if (err)
804 return err;
805
806 br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false;
807 err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL);
808 if (err)
809 return err;
810
811 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL))
812 nbp_vlan_tunnel_info_flush(p);
813
814 if (tb[IFLA_BRPORT_COST]) {
815 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
816 if (err)
817 return err;
818 }
819
820 if (tb[IFLA_BRPORT_PRIORITY]) {
821 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
822 if (err)
823 return err;
824 }
825
826 if (tb[IFLA_BRPORT_STATE]) {
827 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
828 if (err)
829 return err;
830 }
831
832 if (tb[IFLA_BRPORT_FLUSH])
833 br_fdb_delete_by_port(p->br, p, 0, 0);
834
835 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
836 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
837 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
838
839 err = br_multicast_set_port_router(p, mcast_router);
840 if (err)
841 return err;
842 }
843 #endif
844
845 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
846 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]);
847
848 if (fwd_mask & BR_GROUPFWD_MACPAUSE)
849 return -EINVAL;
850 p->group_fwd_mask = fwd_mask;
851 }
852
853 err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS,
854 BR_NEIGH_SUPPRESS);
855 if (err)
856 return err;
857
858 err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED);
859 if (err)
860 return err;
861
862 if (tb[IFLA_BRPORT_BACKUP_PORT]) {
863 struct net_device *backup_dev = NULL;
864 u32 backup_ifindex;
865
866 backup_ifindex = nla_get_u32(tb[IFLA_BRPORT_BACKUP_PORT]);
867 if (backup_ifindex) {
868 backup_dev = __dev_get_by_index(dev_net(p->dev),
869 backup_ifindex);
870 if (!backup_dev)
871 return -ENOENT;
872 }
873
874 err = nbp_backup_change(p, backup_dev);
875 if (err)
876 return err;
877 }
878
879 br_port_flags_change(p, old_flags ^ p->flags);
880 return 0;
881 }
882
883 /* Change state and parameters on port. */
884 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags,
885 struct netlink_ext_ack *extack)
886 {
887 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
888 struct nlattr *tb[IFLA_BRPORT_MAX + 1];
889 struct net_bridge_port *p;
890 struct nlattr *protinfo;
891 struct nlattr *afspec;
892 bool changed = false;
893 int err = 0;
894
895 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
896 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
897 if (!protinfo && !afspec)
898 return 0;
899
900 p = br_port_get_rtnl(dev);
901 /* We want to accept dev as bridge itself if the AF_SPEC
902 * is set to see if someone is setting vlan info on the bridge
903 */
904 if (!p && !afspec)
905 return -EINVAL;
906
907 if (p && protinfo) {
908 if (protinfo->nla_type & NLA_F_NESTED) {
909 err = nla_parse_nested_deprecated(tb, IFLA_BRPORT_MAX,
910 protinfo,
911 br_port_policy,
912 NULL);
913 if (err)
914 return err;
915
916 spin_lock_bh(&p->br->lock);
917 err = br_setport(p, tb);
918 spin_unlock_bh(&p->br->lock);
919 } else {
920 /* Binary compatibility with old RSTP */
921 if (nla_len(protinfo) < sizeof(u8))
922 return -EINVAL;
923
924 spin_lock_bh(&p->br->lock);
925 err = br_set_port_state(p, nla_get_u8(protinfo));
926 spin_unlock_bh(&p->br->lock);
927 }
928 if (err)
929 goto out;
930 changed = true;
931 }
932
933 if (afspec)
934 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed, extack);
935
936 if (changed)
937 br_ifinfo_notify(RTM_NEWLINK, br, p);
938 out:
939 return err;
940 }
941
942 /* Delete port information */
943 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
944 {
945 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
946 struct net_bridge_port *p;
947 struct nlattr *afspec;
948 bool changed = false;
949 int err = 0;
950
951 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
952 if (!afspec)
953 return 0;
954
955 p = br_port_get_rtnl(dev);
956 /* We want to accept dev as bridge itself as well */
957 if (!p && !(dev->priv_flags & IFF_EBRIDGE))
958 return -EINVAL;
959
960 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed, NULL);
961 if (changed)
962 /* Send RTM_NEWLINK because userspace
963 * expects RTM_NEWLINK for vlan dels
964 */
965 br_ifinfo_notify(RTM_NEWLINK, br, p);
966
967 return err;
968 }
969
970 static int br_validate(struct nlattr *tb[], struct nlattr *data[],
971 struct netlink_ext_ack *extack)
972 {
973 if (tb[IFLA_ADDRESS]) {
974 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
975 return -EINVAL;
976 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
977 return -EADDRNOTAVAIL;
978 }
979
980 if (!data)
981 return 0;
982
983 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
984 if (data[IFLA_BR_VLAN_PROTOCOL]) {
985 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) {
986 case htons(ETH_P_8021Q):
987 case htons(ETH_P_8021AD):
988 break;
989 default:
990 return -EPROTONOSUPPORT;
991 }
992 }
993
994 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
995 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
996
997 if (defpvid >= VLAN_VID_MASK)
998 return -EINVAL;
999 }
1000 #endif
1001
1002 return 0;
1003 }
1004
1005 static int br_port_slave_changelink(struct net_device *brdev,
1006 struct net_device *dev,
1007 struct nlattr *tb[],
1008 struct nlattr *data[],
1009 struct netlink_ext_ack *extack)
1010 {
1011 struct net_bridge *br = netdev_priv(brdev);
1012 int ret;
1013
1014 if (!data)
1015 return 0;
1016
1017 spin_lock_bh(&br->lock);
1018 ret = br_setport(br_port_get_rtnl(dev), data);
1019 spin_unlock_bh(&br->lock);
1020
1021 return ret;
1022 }
1023
1024 static int br_port_fill_slave_info(struct sk_buff *skb,
1025 const struct net_device *brdev,
1026 const struct net_device *dev)
1027 {
1028 return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
1029 }
1030
1031 static size_t br_port_get_slave_size(const struct net_device *brdev,
1032 const struct net_device *dev)
1033 {
1034 return br_port_info_size();
1035 }
1036
1037 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
1038 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
1039 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
1040 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
1041 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
1042 [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
1043 [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
1044 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
1045 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
1046 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
1047 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
1048 .len = ETH_ALEN },
1049 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
1050 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
1051 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
1052 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
1053 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
1054 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
1055 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
1056 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
1057 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
1058 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
1059 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
1060 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
1061 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
1062 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
1063 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
1064 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
1065 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
1066 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
1067 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
1068 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
1069 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
1070 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
1071 [IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 },
1072 [IFLA_BR_MULTI_BOOLOPT] = { .type = NLA_EXACT_LEN,
1073 .len = sizeof(struct br_boolopt_multi) },
1074 };
1075
1076 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
1077 struct nlattr *data[],
1078 struct netlink_ext_ack *extack)
1079 {
1080 struct net_bridge *br = netdev_priv(brdev);
1081 int err;
1082
1083 if (!data)
1084 return 0;
1085
1086 if (data[IFLA_BR_FORWARD_DELAY]) {
1087 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
1088 if (err)
1089 return err;
1090 }
1091
1092 if (data[IFLA_BR_HELLO_TIME]) {
1093 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
1094 if (err)
1095 return err;
1096 }
1097
1098 if (data[IFLA_BR_MAX_AGE]) {
1099 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
1100 if (err)
1101 return err;
1102 }
1103
1104 if (data[IFLA_BR_AGEING_TIME]) {
1105 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME]));
1106 if (err)
1107 return err;
1108 }
1109
1110 if (data[IFLA_BR_STP_STATE]) {
1111 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
1112
1113 err = br_stp_set_enabled(br, stp_enabled, extack);
1114 if (err)
1115 return err;
1116 }
1117
1118 if (data[IFLA_BR_PRIORITY]) {
1119 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
1120
1121 br_stp_set_bridge_priority(br, priority);
1122 }
1123
1124 if (data[IFLA_BR_VLAN_FILTERING]) {
1125 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
1126
1127 err = __br_vlan_filter_toggle(br, vlan_filter);
1128 if (err)
1129 return err;
1130 }
1131
1132 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1133 if (data[IFLA_BR_VLAN_PROTOCOL]) {
1134 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
1135
1136 err = __br_vlan_set_proto(br, vlan_proto);
1137 if (err)
1138 return err;
1139 }
1140
1141 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1142 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1143
1144 err = __br_vlan_set_default_pvid(br, defpvid, extack);
1145 if (err)
1146 return err;
1147 }
1148
1149 if (data[IFLA_BR_VLAN_STATS_ENABLED]) {
1150 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]);
1151
1152 err = br_vlan_set_stats(br, vlan_stats);
1153 if (err)
1154 return err;
1155 }
1156
1157 if (data[IFLA_BR_VLAN_STATS_PER_PORT]) {
1158 __u8 per_port = nla_get_u8(data[IFLA_BR_VLAN_STATS_PER_PORT]);
1159
1160 err = br_vlan_set_stats_per_port(br, per_port);
1161 if (err)
1162 return err;
1163 }
1164 #endif
1165
1166 if (data[IFLA_BR_GROUP_FWD_MASK]) {
1167 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
1168
1169 if (fwd_mask & BR_GROUPFWD_RESTRICTED)
1170 return -EINVAL;
1171 br->group_fwd_mask = fwd_mask;
1172 }
1173
1174 if (data[IFLA_BR_GROUP_ADDR]) {
1175 u8 new_addr[ETH_ALEN];
1176
1177 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
1178 return -EINVAL;
1179 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
1180 if (!is_link_local_ether_addr(new_addr))
1181 return -EINVAL;
1182 if (new_addr[5] == 1 || /* 802.3x Pause address */
1183 new_addr[5] == 2 || /* 802.3ad Slow protocols */
1184 new_addr[5] == 3) /* 802.1X PAE address */
1185 return -EINVAL;
1186 spin_lock_bh(&br->lock);
1187 memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
1188 spin_unlock_bh(&br->lock);
1189 br_opt_toggle(br, BROPT_GROUP_ADDR_SET, true);
1190 br_recalculate_fwd_mask(br);
1191 }
1192
1193 if (data[IFLA_BR_FDB_FLUSH])
1194 br_fdb_flush(br);
1195
1196 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1197 if (data[IFLA_BR_MCAST_ROUTER]) {
1198 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
1199
1200 err = br_multicast_set_router(br, multicast_router);
1201 if (err)
1202 return err;
1203 }
1204
1205 if (data[IFLA_BR_MCAST_SNOOPING]) {
1206 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
1207
1208 br_multicast_toggle(br, mcast_snooping);
1209 }
1210
1211 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
1212 u8 val;
1213
1214 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
1215 br_opt_toggle(br, BROPT_MULTICAST_QUERY_USE_IFADDR, !!val);
1216 }
1217
1218 if (data[IFLA_BR_MCAST_QUERIER]) {
1219 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
1220
1221 err = br_multicast_set_querier(br, mcast_querier);
1222 if (err)
1223 return err;
1224 }
1225
1226 if (data[IFLA_BR_MCAST_HASH_ELASTICITY])
1227 br_warn(br, "the hash_elasticity option has been deprecated and is always %u\n",
1228 RHT_ELASTICITY);
1229
1230 if (data[IFLA_BR_MCAST_HASH_MAX])
1231 br->hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
1232
1233 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
1234 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
1235
1236 br->multicast_last_member_count = val;
1237 }
1238
1239 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
1240 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
1241
1242 br->multicast_startup_query_count = val;
1243 }
1244
1245 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
1246 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
1247
1248 br->multicast_last_member_interval = clock_t_to_jiffies(val);
1249 }
1250
1251 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
1252 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
1253
1254 br->multicast_membership_interval = clock_t_to_jiffies(val);
1255 }
1256
1257 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
1258 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
1259
1260 br->multicast_querier_interval = clock_t_to_jiffies(val);
1261 }
1262
1263 if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
1264 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
1265
1266 br->multicast_query_interval = clock_t_to_jiffies(val);
1267 }
1268
1269 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
1270 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
1271
1272 br->multicast_query_response_interval = clock_t_to_jiffies(val);
1273 }
1274
1275 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
1276 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
1277
1278 br->multicast_startup_query_interval = clock_t_to_jiffies(val);
1279 }
1280
1281 if (data[IFLA_BR_MCAST_STATS_ENABLED]) {
1282 __u8 mcast_stats;
1283
1284 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]);
1285 br_opt_toggle(br, BROPT_MULTICAST_STATS_ENABLED, !!mcast_stats);
1286 }
1287
1288 if (data[IFLA_BR_MCAST_IGMP_VERSION]) {
1289 __u8 igmp_version;
1290
1291 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]);
1292 err = br_multicast_set_igmp_version(br, igmp_version);
1293 if (err)
1294 return err;
1295 }
1296
1297 #if IS_ENABLED(CONFIG_IPV6)
1298 if (data[IFLA_BR_MCAST_MLD_VERSION]) {
1299 __u8 mld_version;
1300
1301 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
1302 err = br_multicast_set_mld_version(br, mld_version);
1303 if (err)
1304 return err;
1305 }
1306 #endif
1307 #endif
1308 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1309 if (data[IFLA_BR_NF_CALL_IPTABLES]) {
1310 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
1311
1312 br_opt_toggle(br, BROPT_NF_CALL_IPTABLES, !!val);
1313 }
1314
1315 if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
1316 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
1317
1318 br_opt_toggle(br, BROPT_NF_CALL_IP6TABLES, !!val);
1319 }
1320
1321 if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
1322 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
1323
1324 br_opt_toggle(br, BROPT_NF_CALL_ARPTABLES, !!val);
1325 }
1326 #endif
1327
1328 if (data[IFLA_BR_MULTI_BOOLOPT]) {
1329 struct br_boolopt_multi *bm;
1330
1331 bm = nla_data(data[IFLA_BR_MULTI_BOOLOPT]);
1332 err = br_boolopt_multi_toggle(br, bm, extack);
1333 if (err)
1334 return err;
1335 }
1336
1337 return 0;
1338 }
1339
1340 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
1341 struct nlattr *tb[], struct nlattr *data[],
1342 struct netlink_ext_ack *extack)
1343 {
1344 struct net_bridge *br = netdev_priv(dev);
1345 int err;
1346
1347 err = register_netdevice(dev);
1348 if (err)
1349 return err;
1350
1351 if (tb[IFLA_ADDRESS]) {
1352 spin_lock_bh(&br->lock);
1353 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
1354 spin_unlock_bh(&br->lock);
1355 }
1356
1357 err = br_changelink(dev, tb, data, extack);
1358 if (err)
1359 br_dev_delete(dev, NULL);
1360
1361 return err;
1362 }
1363
1364 static size_t br_get_size(const struct net_device *brdev)
1365 {
1366 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */
1367 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */
1368 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */
1369 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */
1370 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */
1371 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */
1372 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */
1373 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1374 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
1375 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */
1376 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */
1377 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_PER_PORT */
1378 #endif
1379 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */
1380 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */
1381 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */
1382 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */
1383 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */
1384 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */
1385 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
1386 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
1387 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
1388 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
1389 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
1390 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */
1391 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1392 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */
1393 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */
1394 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
1395 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */
1396 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */
1397 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */
1398 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */
1399 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
1400 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
1401 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
1402 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
1403 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
1404 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
1405 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
1406 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
1407 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */
1408 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */
1409 #endif
1410 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1411 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */
1412 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */
1413 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */
1414 #endif
1415 nla_total_size(sizeof(struct br_boolopt_multi)) + /* IFLA_BR_MULTI_BOOLOPT */
1416 0;
1417 }
1418
1419 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
1420 {
1421 struct net_bridge *br = netdev_priv(brdev);
1422 u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
1423 u32 hello_time = jiffies_to_clock_t(br->hello_time);
1424 u32 age_time = jiffies_to_clock_t(br->max_age);
1425 u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
1426 u32 stp_enabled = br->stp_enabled;
1427 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
1428 u8 vlan_enabled = br_vlan_enabled(br->dev);
1429 struct br_boolopt_multi bm;
1430 u64 clockval;
1431
1432 clockval = br_timer_value(&br->hello_timer);
1433 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD))
1434 return -EMSGSIZE;
1435 clockval = br_timer_value(&br->tcn_timer);
1436 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD))
1437 return -EMSGSIZE;
1438 clockval = br_timer_value(&br->topology_change_timer);
1439 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval,
1440 IFLA_BR_PAD))
1441 return -EMSGSIZE;
1442 clockval = br_timer_value(&br->gc_work.timer);
1443 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD))
1444 return -EMSGSIZE;
1445
1446 br_boolopt_multi_get(br, &bm);
1447 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
1448 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
1449 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
1450 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
1451 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
1452 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
1453 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
1454 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
1455 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
1456 &br->bridge_id) ||
1457 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
1458 &br->designated_root) ||
1459 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
1460 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
1461 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
1462 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
1463 br->topology_change_detected) ||
1464 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr) ||
1465 nla_put(skb, IFLA_BR_MULTI_BOOLOPT, sizeof(bm), &bm))
1466 return -EMSGSIZE;
1467
1468 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1469 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
1470 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
1471 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED,
1472 br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) ||
1473 nla_put_u8(skb, IFLA_BR_VLAN_STATS_PER_PORT,
1474 br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)))
1475 return -EMSGSIZE;
1476 #endif
1477 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1478 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
1479 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING,
1480 br_opt_get(br, BROPT_MULTICAST_ENABLED)) ||
1481 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
1482 br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR)) ||
1483 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER,
1484 br_opt_get(br, BROPT_MULTICAST_QUERIER)) ||
1485 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED,
1486 br_opt_get(br, BROPT_MULTICAST_STATS_ENABLED)) ||
1487 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY, RHT_ELASTICITY) ||
1488 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
1489 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
1490 br->multicast_last_member_count) ||
1491 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
1492 br->multicast_startup_query_count) ||
1493 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
1494 br->multicast_igmp_version))
1495 return -EMSGSIZE;
1496 #if IS_ENABLED(CONFIG_IPV6)
1497 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
1498 br->multicast_mld_version))
1499 return -EMSGSIZE;
1500 #endif
1501 clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
1502 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
1503 IFLA_BR_PAD))
1504 return -EMSGSIZE;
1505 clockval = jiffies_to_clock_t(br->multicast_membership_interval);
1506 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval,
1507 IFLA_BR_PAD))
1508 return -EMSGSIZE;
1509 clockval = jiffies_to_clock_t(br->multicast_querier_interval);
1510 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval,
1511 IFLA_BR_PAD))
1512 return -EMSGSIZE;
1513 clockval = jiffies_to_clock_t(br->multicast_query_interval);
1514 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval,
1515 IFLA_BR_PAD))
1516 return -EMSGSIZE;
1517 clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
1518 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval,
1519 IFLA_BR_PAD))
1520 return -EMSGSIZE;
1521 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
1522 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval,
1523 IFLA_BR_PAD))
1524 return -EMSGSIZE;
1525 #endif
1526 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1527 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
1528 br_opt_get(br, BROPT_NF_CALL_IPTABLES) ? 1 : 0) ||
1529 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
1530 br_opt_get(br, BROPT_NF_CALL_IP6TABLES) ? 1 : 0) ||
1531 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
1532 br_opt_get(br, BROPT_NF_CALL_ARPTABLES) ? 1 : 0))
1533 return -EMSGSIZE;
1534 #endif
1535
1536 return 0;
1537 }
1538
1539 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
1540 {
1541 struct net_bridge_port *p = NULL;
1542 struct net_bridge_vlan_group *vg;
1543 struct net_bridge_vlan *v;
1544 struct net_bridge *br;
1545 int numvls = 0;
1546
1547 switch (attr) {
1548 case IFLA_STATS_LINK_XSTATS:
1549 br = netdev_priv(dev);
1550 vg = br_vlan_group(br);
1551 break;
1552 case IFLA_STATS_LINK_XSTATS_SLAVE:
1553 p = br_port_get_rtnl(dev);
1554 if (!p)
1555 return 0;
1556 br = p->br;
1557 vg = nbp_vlan_group(p);
1558 break;
1559 default:
1560 return 0;
1561 }
1562
1563 if (vg) {
1564 /* we need to count all, even placeholder entries */
1565 list_for_each_entry(v, &vg->vlan_list, vlist)
1566 numvls++;
1567 }
1568
1569 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) +
1570 nla_total_size(sizeof(struct br_mcast_stats)) +
1571 nla_total_size(0);
1572 }
1573
1574 static int br_fill_linkxstats(struct sk_buff *skb,
1575 const struct net_device *dev,
1576 int *prividx, int attr)
1577 {
1578 struct nlattr *nla __maybe_unused;
1579 struct net_bridge_port *p = NULL;
1580 struct net_bridge_vlan_group *vg;
1581 struct net_bridge_vlan *v;
1582 struct net_bridge *br;
1583 struct nlattr *nest;
1584 int vl_idx = 0;
1585
1586 switch (attr) {
1587 case IFLA_STATS_LINK_XSTATS:
1588 br = netdev_priv(dev);
1589 vg = br_vlan_group(br);
1590 break;
1591 case IFLA_STATS_LINK_XSTATS_SLAVE:
1592 p = br_port_get_rtnl(dev);
1593 if (!p)
1594 return 0;
1595 br = p->br;
1596 vg = nbp_vlan_group(p);
1597 break;
1598 default:
1599 return -EINVAL;
1600 }
1601
1602 nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BRIDGE);
1603 if (!nest)
1604 return -EMSGSIZE;
1605
1606 if (vg) {
1607 u16 pvid;
1608
1609 pvid = br_get_pvid(vg);
1610 list_for_each_entry(v, &vg->vlan_list, vlist) {
1611 struct bridge_vlan_xstats vxi;
1612 struct br_vlan_stats stats;
1613
1614 if (++vl_idx < *prividx)
1615 continue;
1616 memset(&vxi, 0, sizeof(vxi));
1617 vxi.vid = v->vid;
1618 vxi.flags = v->flags;
1619 if (v->vid == pvid)
1620 vxi.flags |= BRIDGE_VLAN_INFO_PVID;
1621 br_vlan_get_stats(v, &stats);
1622 vxi.rx_bytes = stats.rx_bytes;
1623 vxi.rx_packets = stats.rx_packets;
1624 vxi.tx_bytes = stats.tx_bytes;
1625 vxi.tx_packets = stats.tx_packets;
1626
1627 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi))
1628 goto nla_put_failure;
1629 }
1630 }
1631
1632 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1633 if (++vl_idx >= *prividx) {
1634 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST,
1635 sizeof(struct br_mcast_stats),
1636 BRIDGE_XSTATS_PAD);
1637 if (!nla)
1638 goto nla_put_failure;
1639 br_multicast_get_stats(br, p, nla_data(nla));
1640 }
1641 #endif
1642
1643 if (p) {
1644 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_STP,
1645 sizeof(p->stp_xstats),
1646 BRIDGE_XSTATS_PAD);
1647 if (!nla)
1648 goto nla_put_failure;
1649
1650 spin_lock_bh(&br->lock);
1651 memcpy(nla_data(nla), &p->stp_xstats, sizeof(p->stp_xstats));
1652 spin_unlock_bh(&br->lock);
1653 }
1654
1655 nla_nest_end(skb, nest);
1656 *prividx = 0;
1657
1658 return 0;
1659
1660 nla_put_failure:
1661 nla_nest_end(skb, nest);
1662 *prividx = vl_idx;
1663
1664 return -EMSGSIZE;
1665 }
1666
1667 static struct rtnl_af_ops br_af_ops __read_mostly = {
1668 .family = AF_BRIDGE,
1669 .get_link_af_size = br_get_link_af_size_filtered,
1670 };
1671
1672 struct rtnl_link_ops br_link_ops __read_mostly = {
1673 .kind = "bridge",
1674 .priv_size = sizeof(struct net_bridge),
1675 .setup = br_dev_setup,
1676 .maxtype = IFLA_BR_MAX,
1677 .policy = br_policy,
1678 .validate = br_validate,
1679 .newlink = br_dev_newlink,
1680 .changelink = br_changelink,
1681 .dellink = br_dev_delete,
1682 .get_size = br_get_size,
1683 .fill_info = br_fill_info,
1684 .fill_linkxstats = br_fill_linkxstats,
1685 .get_linkxstats_size = br_get_linkxstats_size,
1686
1687 .slave_maxtype = IFLA_BRPORT_MAX,
1688 .slave_policy = br_port_policy,
1689 .slave_changelink = br_port_slave_changelink,
1690 .get_slave_size = br_port_get_slave_size,
1691 .fill_slave_info = br_port_fill_slave_info,
1692 };
1693
1694 int __init br_netlink_init(void)
1695 {
1696 int err;
1697
1698 br_mdb_init();
1699 br_vlan_rtnl_init();
1700 rtnl_af_register(&br_af_ops);
1701
1702 err = rtnl_link_register(&br_link_ops);
1703 if (err)
1704 goto out_af;
1705
1706 return 0;
1707
1708 out_af:
1709 rtnl_af_unregister(&br_af_ops);
1710 br_mdb_uninit();
1711 return err;
1712 }
1713
1714 void br_netlink_fini(void)
1715 {
1716 br_mdb_uninit();
1717 br_vlan_rtnl_uninit();
1718 rtnl_af_unregister(&br_af_ops);
1719 rtnl_link_unregister(&br_link_ops);
1720 }
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