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bridge: netlink: add support for port's multicast_router attribute
[deliverable/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
24 static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
25 u32 filter_mask)
26 {
27 struct net_bridge_vlan *v;
28 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
29 u16 flags, pvid;
30 int num_vlans = 0;
31
32 if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
33 return 0;
34
35 pvid = br_get_pvid(vg);
36 /* Count number of vlan infos */
37 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
38 flags = 0;
39 /* only a context, bridge vlan not activated */
40 if (!br_vlan_should_use(v))
41 continue;
42 if (v->vid == pvid)
43 flags |= BRIDGE_VLAN_INFO_PVID;
44
45 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
46 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
47
48 if (vid_range_start == 0) {
49 goto initvars;
50 } else if ((v->vid - vid_range_end) == 1 &&
51 flags == vid_range_flags) {
52 vid_range_end = v->vid;
53 continue;
54 } else {
55 if ((vid_range_end - vid_range_start) > 0)
56 num_vlans += 2;
57 else
58 num_vlans += 1;
59 }
60 initvars:
61 vid_range_start = v->vid;
62 vid_range_end = v->vid;
63 vid_range_flags = flags;
64 }
65
66 if (vid_range_start != 0) {
67 if ((vid_range_end - vid_range_start) > 0)
68 num_vlans += 2;
69 else
70 num_vlans += 1;
71 }
72
73 return num_vlans;
74 }
75
76 static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg,
77 u32 filter_mask)
78 {
79 int num_vlans;
80
81 if (!vg)
82 return 0;
83
84 if (filter_mask & RTEXT_FILTER_BRVLAN)
85 return vg->num_vlans;
86
87 rcu_read_lock();
88 num_vlans = __get_num_vlan_infos(vg, filter_mask);
89 rcu_read_unlock();
90
91 return num_vlans;
92 }
93
94 static size_t br_get_link_af_size_filtered(const struct net_device *dev,
95 u32 filter_mask)
96 {
97 struct net_bridge_vlan_group *vg = NULL;
98 struct net_bridge_port *p;
99 struct net_bridge *br;
100 int num_vlan_infos;
101
102 rcu_read_lock();
103 if (br_port_exists(dev)) {
104 p = br_port_get_rcu(dev);
105 vg = nbp_vlan_group(p);
106 } else if (dev->priv_flags & IFF_EBRIDGE) {
107 br = netdev_priv(dev);
108 vg = br_vlan_group(br);
109 }
110 num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
111 rcu_read_unlock();
112
113 /* Each VLAN is returned in bridge_vlan_info along with flags */
114 return num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
115 }
116
117 static inline size_t br_port_info_size(void)
118 {
119 return nla_total_size(1) /* IFLA_BRPORT_STATE */
120 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */
121 + nla_total_size(4) /* IFLA_BRPORT_COST */
122 + nla_total_size(1) /* IFLA_BRPORT_MODE */
123 + nla_total_size(1) /* IFLA_BRPORT_GUARD */
124 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */
125 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
126 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */
127 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
128 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
129 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
130 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
131 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */
132 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */
133 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */
134 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */
135 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */
136 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
137 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */
138 + nla_total_size(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
139 + nla_total_size(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
140 + nla_total_size(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */
141 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
142 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */
143 #endif
144 + 0;
145 }
146
147 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
148 {
149 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
150 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
151 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
152 + nla_total_size(4) /* IFLA_MASTER */
153 + nla_total_size(4) /* IFLA_MTU */
154 + nla_total_size(4) /* IFLA_LINK */
155 + nla_total_size(1) /* IFLA_OPERSTATE */
156 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
157 + nla_total_size(br_get_link_af_size_filtered(dev,
158 filter_mask)); /* IFLA_AF_SPEC */
159 }
160
161 static int br_port_fill_attrs(struct sk_buff *skb,
162 const struct net_bridge_port *p)
163 {
164 u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
165 u64 timerval;
166
167 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
168 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
169 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
170 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
171 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
172 nla_put_u8(skb, IFLA_BRPORT_PROTECT, !!(p->flags & BR_ROOT_BLOCK)) ||
173 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
174 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
175 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_FLOOD)) ||
176 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
177 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
178 !!(p->flags & BR_PROXYARP_WIFI)) ||
179 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
180 &p->designated_root) ||
181 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
182 &p->designated_bridge) ||
183 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
184 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
185 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
186 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
187 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
188 p->topology_change_ack) ||
189 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending))
190 return -EMSGSIZE;
191
192 timerval = br_timer_value(&p->message_age_timer);
193 if (nla_put_u64(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval))
194 return -EMSGSIZE;
195 timerval = br_timer_value(&p->forward_delay_timer);
196 if (nla_put_u64(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval))
197 return -EMSGSIZE;
198 timerval = br_timer_value(&p->hold_timer);
199 if (nla_put_u64(skb, IFLA_BRPORT_HOLD_TIMER, timerval))
200 return -EMSGSIZE;
201
202 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
203 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
204 p->multicast_router))
205 return -EMSGSIZE;
206 #endif
207
208 return 0;
209 }
210
211 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
212 u16 vid_end, u16 flags)
213 {
214 struct bridge_vlan_info vinfo;
215
216 if ((vid_end - vid_start) > 0) {
217 /* add range to skb */
218 vinfo.vid = vid_start;
219 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
220 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
221 sizeof(vinfo), &vinfo))
222 goto nla_put_failure;
223
224 vinfo.vid = vid_end;
225 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
226 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
227 sizeof(vinfo), &vinfo))
228 goto nla_put_failure;
229 } else {
230 vinfo.vid = vid_start;
231 vinfo.flags = flags;
232 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
233 sizeof(vinfo), &vinfo))
234 goto nla_put_failure;
235 }
236
237 return 0;
238
239 nla_put_failure:
240 return -EMSGSIZE;
241 }
242
243 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
244 struct net_bridge_vlan_group *vg)
245 {
246 struct net_bridge_vlan *v;
247 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
248 u16 flags, pvid;
249 int err = 0;
250
251 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
252 * and mark vlan info with begin and end flags
253 * if vlaninfo represents a range
254 */
255 pvid = br_get_pvid(vg);
256 list_for_each_entry(v, &vg->vlan_list, vlist) {
257 flags = 0;
258 if (!br_vlan_should_use(v))
259 continue;
260 if (v->vid == pvid)
261 flags |= BRIDGE_VLAN_INFO_PVID;
262
263 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
264 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
265
266 if (vid_range_start == 0) {
267 goto initvars;
268 } else if ((v->vid - vid_range_end) == 1 &&
269 flags == vid_range_flags) {
270 vid_range_end = v->vid;
271 continue;
272 } else {
273 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
274 vid_range_end,
275 vid_range_flags);
276 if (err)
277 return err;
278 }
279
280 initvars:
281 vid_range_start = v->vid;
282 vid_range_end = v->vid;
283 vid_range_flags = flags;
284 }
285
286 if (vid_range_start != 0) {
287 /* Call it once more to send any left over vlans */
288 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
289 vid_range_end,
290 vid_range_flags);
291 if (err)
292 return err;
293 }
294
295 return 0;
296 }
297
298 static int br_fill_ifvlaninfo(struct sk_buff *skb,
299 struct net_bridge_vlan_group *vg)
300 {
301 struct bridge_vlan_info vinfo;
302 struct net_bridge_vlan *v;
303 u16 pvid;
304
305 pvid = br_get_pvid(vg);
306 list_for_each_entry(v, &vg->vlan_list, vlist) {
307 if (!br_vlan_should_use(v))
308 continue;
309
310 vinfo.vid = v->vid;
311 vinfo.flags = 0;
312 if (v->vid == pvid)
313 vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
314
315 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
316 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
317
318 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
319 sizeof(vinfo), &vinfo))
320 goto nla_put_failure;
321 }
322
323 return 0;
324
325 nla_put_failure:
326 return -EMSGSIZE;
327 }
328
329 /*
330 * Create one netlink message for one interface
331 * Contains port and master info as well as carrier and bridge state.
332 */
333 static int br_fill_ifinfo(struct sk_buff *skb,
334 struct net_bridge_port *port,
335 u32 pid, u32 seq, int event, unsigned int flags,
336 u32 filter_mask, const struct net_device *dev)
337 {
338 struct net_bridge *br;
339 struct ifinfomsg *hdr;
340 struct nlmsghdr *nlh;
341 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
342
343 if (port)
344 br = port->br;
345 else
346 br = netdev_priv(dev);
347
348 br_debug(br, "br_fill_info event %d port %s master %s\n",
349 event, dev->name, br->dev->name);
350
351 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
352 if (nlh == NULL)
353 return -EMSGSIZE;
354
355 hdr = nlmsg_data(nlh);
356 hdr->ifi_family = AF_BRIDGE;
357 hdr->__ifi_pad = 0;
358 hdr->ifi_type = dev->type;
359 hdr->ifi_index = dev->ifindex;
360 hdr->ifi_flags = dev_get_flags(dev);
361 hdr->ifi_change = 0;
362
363 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
364 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
365 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
366 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
367 (dev->addr_len &&
368 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
369 (dev->ifindex != dev_get_iflink(dev) &&
370 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
371 goto nla_put_failure;
372
373 if (event == RTM_NEWLINK && port) {
374 struct nlattr *nest
375 = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED);
376
377 if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
378 goto nla_put_failure;
379 nla_nest_end(skb, nest);
380 }
381
382 /* Check if the VID information is requested */
383 if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
384 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
385 struct net_bridge_vlan_group *vg;
386 struct nlattr *af;
387 int err;
388
389 if (port)
390 vg = nbp_vlan_group(port);
391 else
392 vg = br_vlan_group(br);
393
394 if (!vg || !vg->num_vlans)
395 goto done;
396
397 af = nla_nest_start(skb, IFLA_AF_SPEC);
398 if (!af)
399 goto nla_put_failure;
400
401 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
402 err = br_fill_ifvlaninfo_compressed(skb, vg);
403 else
404 err = br_fill_ifvlaninfo(skb, vg);
405 if (err)
406 goto nla_put_failure;
407 nla_nest_end(skb, af);
408 }
409
410 done:
411 nlmsg_end(skb, nlh);
412 return 0;
413
414 nla_put_failure:
415 nlmsg_cancel(skb, nlh);
416 return -EMSGSIZE;
417 }
418
419 /*
420 * Notify listeners of a change in port information
421 */
422 void br_ifinfo_notify(int event, struct net_bridge_port *port)
423 {
424 struct net *net;
425 struct sk_buff *skb;
426 int err = -ENOBUFS;
427 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
428
429 if (!port)
430 return;
431
432 net = dev_net(port->dev);
433 br_debug(port->br, "port %u(%s) event %d\n",
434 (unsigned int)port->port_no, port->dev->name, event);
435
436 skb = nlmsg_new(br_nlmsg_size(port->dev, filter), GFP_ATOMIC);
437 if (skb == NULL)
438 goto errout;
439
440 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, port->dev);
441 if (err < 0) {
442 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
443 WARN_ON(err == -EMSGSIZE);
444 kfree_skb(skb);
445 goto errout;
446 }
447 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
448 return;
449 errout:
450 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
451 }
452
453
454 /*
455 * Dump information about all ports, in response to GETLINK
456 */
457 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
458 struct net_device *dev, u32 filter_mask, int nlflags)
459 {
460 struct net_bridge_port *port = br_port_get_rtnl(dev);
461
462 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
463 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
464 return 0;
465
466 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
467 filter_mask, dev);
468 }
469
470 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
471 int cmd, struct bridge_vlan_info *vinfo)
472 {
473 int err = 0;
474
475 switch (cmd) {
476 case RTM_SETLINK:
477 if (p) {
478 /* if the MASTER flag is set this will act on the global
479 * per-VLAN entry as well
480 */
481 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags);
482 if (err)
483 break;
484 } else {
485 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
486 err = br_vlan_add(br, vinfo->vid, vinfo->flags);
487 }
488 break;
489
490 case RTM_DELLINK:
491 if (p) {
492 nbp_vlan_delete(p, vinfo->vid);
493 if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER)
494 br_vlan_delete(p->br, vinfo->vid);
495 } else {
496 br_vlan_delete(br, vinfo->vid);
497 }
498 break;
499 }
500
501 return err;
502 }
503
504 static int br_afspec(struct net_bridge *br,
505 struct net_bridge_port *p,
506 struct nlattr *af_spec,
507 int cmd)
508 {
509 struct bridge_vlan_info *vinfo_start = NULL;
510 struct bridge_vlan_info *vinfo = NULL;
511 struct nlattr *attr;
512 int err = 0;
513 int rem;
514
515 nla_for_each_nested(attr, af_spec, rem) {
516 if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO)
517 continue;
518 if (nla_len(attr) != sizeof(struct bridge_vlan_info))
519 return -EINVAL;
520 vinfo = nla_data(attr);
521 if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK)
522 return -EINVAL;
523 if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
524 if (vinfo_start)
525 return -EINVAL;
526 vinfo_start = vinfo;
527 continue;
528 }
529
530 if (vinfo_start) {
531 struct bridge_vlan_info tmp_vinfo;
532 int v;
533
534 if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END))
535 return -EINVAL;
536
537 if (vinfo->vid <= vinfo_start->vid)
538 return -EINVAL;
539
540 memcpy(&tmp_vinfo, vinfo_start,
541 sizeof(struct bridge_vlan_info));
542
543 for (v = vinfo_start->vid; v <= vinfo->vid; v++) {
544 tmp_vinfo.vid = v;
545 err = br_vlan_info(br, p, cmd, &tmp_vinfo);
546 if (err)
547 break;
548 }
549 vinfo_start = NULL;
550 } else {
551 err = br_vlan_info(br, p, cmd, vinfo);
552 }
553 if (err)
554 break;
555 }
556
557 return err;
558 }
559
560 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
561 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
562 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
563 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
564 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
565 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
566 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
567 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
568 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
569 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
570 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
571 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
572 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
573 };
574
575 /* Change the state of the port and notify spanning tree */
576 static int br_set_port_state(struct net_bridge_port *p, u8 state)
577 {
578 if (state > BR_STATE_BLOCKING)
579 return -EINVAL;
580
581 /* if kernel STP is running, don't allow changes */
582 if (p->br->stp_enabled == BR_KERNEL_STP)
583 return -EBUSY;
584
585 /* if device is not up, change is not allowed
586 * if link is not present, only allowable state is disabled
587 */
588 if (!netif_running(p->dev) ||
589 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
590 return -ENETDOWN;
591
592 br_set_state(p, state);
593 br_log_state(p);
594 br_port_state_selection(p->br);
595 return 0;
596 }
597
598 /* Set/clear or port flags based on attribute */
599 static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
600 int attrtype, unsigned long mask)
601 {
602 if (tb[attrtype]) {
603 u8 flag = nla_get_u8(tb[attrtype]);
604 if (flag)
605 p->flags |= mask;
606 else
607 p->flags &= ~mask;
608 }
609 }
610
611 /* Process bridge protocol info on port */
612 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
613 {
614 int err;
615 unsigned long old_flags = p->flags;
616
617 br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
618 br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
619 br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
620 br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
621 br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
622 br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
623 br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
624 br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
625
626 if (tb[IFLA_BRPORT_COST]) {
627 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
628 if (err)
629 return err;
630 }
631
632 if (tb[IFLA_BRPORT_PRIORITY]) {
633 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
634 if (err)
635 return err;
636 }
637
638 if (tb[IFLA_BRPORT_STATE]) {
639 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
640 if (err)
641 return err;
642 }
643
644 if (tb[IFLA_BRPORT_FLUSH])
645 br_fdb_delete_by_port(p->br, p, 0, 0);
646
647 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
648 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
649 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
650
651 err = br_multicast_set_port_router(p, mcast_router);
652 if (err)
653 return err;
654 }
655 #endif
656 br_port_flags_change(p, old_flags ^ p->flags);
657 return 0;
658 }
659
660 /* Change state and parameters on port. */
661 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
662 {
663 struct nlattr *protinfo;
664 struct nlattr *afspec;
665 struct net_bridge_port *p;
666 struct nlattr *tb[IFLA_BRPORT_MAX + 1];
667 int err = 0;
668
669 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
670 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
671 if (!protinfo && !afspec)
672 return 0;
673
674 p = br_port_get_rtnl(dev);
675 /* We want to accept dev as bridge itself if the AF_SPEC
676 * is set to see if someone is setting vlan info on the bridge
677 */
678 if (!p && !afspec)
679 return -EINVAL;
680
681 if (p && protinfo) {
682 if (protinfo->nla_type & NLA_F_NESTED) {
683 err = nla_parse_nested(tb, IFLA_BRPORT_MAX,
684 protinfo, br_port_policy);
685 if (err)
686 return err;
687
688 spin_lock_bh(&p->br->lock);
689 err = br_setport(p, tb);
690 spin_unlock_bh(&p->br->lock);
691 } else {
692 /* Binary compatibility with old RSTP */
693 if (nla_len(protinfo) < sizeof(u8))
694 return -EINVAL;
695
696 spin_lock_bh(&p->br->lock);
697 err = br_set_port_state(p, nla_get_u8(protinfo));
698 spin_unlock_bh(&p->br->lock);
699 }
700 if (err)
701 goto out;
702 }
703
704 if (afspec) {
705 err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
706 afspec, RTM_SETLINK);
707 }
708
709 if (err == 0)
710 br_ifinfo_notify(RTM_NEWLINK, p);
711 out:
712 return err;
713 }
714
715 /* Delete port information */
716 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
717 {
718 struct nlattr *afspec;
719 struct net_bridge_port *p;
720 int err = 0;
721
722 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
723 if (!afspec)
724 return 0;
725
726 p = br_port_get_rtnl(dev);
727 /* We want to accept dev as bridge itself as well */
728 if (!p && !(dev->priv_flags & IFF_EBRIDGE))
729 return -EINVAL;
730
731 err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
732 afspec, RTM_DELLINK);
733 if (err == 0)
734 /* Send RTM_NEWLINK because userspace
735 * expects RTM_NEWLINK for vlan dels
736 */
737 br_ifinfo_notify(RTM_NEWLINK, p);
738
739 return err;
740 }
741 static int br_validate(struct nlattr *tb[], struct nlattr *data[])
742 {
743 if (tb[IFLA_ADDRESS]) {
744 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
745 return -EINVAL;
746 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
747 return -EADDRNOTAVAIL;
748 }
749
750 if (!data)
751 return 0;
752
753 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
754 if (data[IFLA_BR_VLAN_PROTOCOL]) {
755 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) {
756 case htons(ETH_P_8021Q):
757 case htons(ETH_P_8021AD):
758 break;
759 default:
760 return -EPROTONOSUPPORT;
761 }
762 }
763 #endif
764
765 return 0;
766 }
767
768 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
769 struct nlattr *tb[], struct nlattr *data[])
770 {
771 struct net_bridge *br = netdev_priv(dev);
772
773 if (tb[IFLA_ADDRESS]) {
774 spin_lock_bh(&br->lock);
775 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
776 spin_unlock_bh(&br->lock);
777 }
778
779 return register_netdevice(dev);
780 }
781
782 static int br_port_slave_changelink(struct net_device *brdev,
783 struct net_device *dev,
784 struct nlattr *tb[],
785 struct nlattr *data[])
786 {
787 struct net_bridge *br = netdev_priv(brdev);
788 int ret;
789
790 if (!data)
791 return 0;
792
793 spin_lock_bh(&br->lock);
794 ret = br_setport(br_port_get_rtnl(dev), data);
795 spin_unlock_bh(&br->lock);
796
797 return ret;
798 }
799
800 static int br_port_fill_slave_info(struct sk_buff *skb,
801 const struct net_device *brdev,
802 const struct net_device *dev)
803 {
804 return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
805 }
806
807 static size_t br_port_get_slave_size(const struct net_device *brdev,
808 const struct net_device *dev)
809 {
810 return br_port_info_size();
811 }
812
813 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
814 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
815 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
816 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
817 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
818 [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
819 [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
820 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
821 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
822 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
823 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
824 .len = ETH_ALEN },
825 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
826 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
827 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
828 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
829 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
830 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
831 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
832 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
833 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
834 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
835 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
836 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
837 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
838 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
839 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
840 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
841 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
842 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
843 };
844
845 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
846 struct nlattr *data[])
847 {
848 struct net_bridge *br = netdev_priv(brdev);
849 int err;
850
851 if (!data)
852 return 0;
853
854 if (data[IFLA_BR_FORWARD_DELAY]) {
855 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
856 if (err)
857 return err;
858 }
859
860 if (data[IFLA_BR_HELLO_TIME]) {
861 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
862 if (err)
863 return err;
864 }
865
866 if (data[IFLA_BR_MAX_AGE]) {
867 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
868 if (err)
869 return err;
870 }
871
872 if (data[IFLA_BR_AGEING_TIME]) {
873 u32 ageing_time = nla_get_u32(data[IFLA_BR_AGEING_TIME]);
874
875 br->ageing_time = clock_t_to_jiffies(ageing_time);
876 }
877
878 if (data[IFLA_BR_STP_STATE]) {
879 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
880
881 br_stp_set_enabled(br, stp_enabled);
882 }
883
884 if (data[IFLA_BR_PRIORITY]) {
885 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
886
887 br_stp_set_bridge_priority(br, priority);
888 }
889
890 if (data[IFLA_BR_VLAN_FILTERING]) {
891 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
892
893 err = __br_vlan_filter_toggle(br, vlan_filter);
894 if (err)
895 return err;
896 }
897
898 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
899 if (data[IFLA_BR_VLAN_PROTOCOL]) {
900 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
901
902 err = __br_vlan_set_proto(br, vlan_proto);
903 if (err)
904 return err;
905 }
906
907 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
908 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
909
910 err = __br_vlan_set_default_pvid(br, defpvid);
911 if (err)
912 return err;
913 }
914 #endif
915
916 if (data[IFLA_BR_GROUP_FWD_MASK]) {
917 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
918
919 if (fwd_mask & BR_GROUPFWD_RESTRICTED)
920 return -EINVAL;
921 br->group_fwd_mask = fwd_mask;
922 }
923
924 if (data[IFLA_BR_GROUP_ADDR]) {
925 u8 new_addr[ETH_ALEN];
926
927 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
928 return -EINVAL;
929 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
930 if (!is_link_local_ether_addr(new_addr))
931 return -EINVAL;
932 if (new_addr[5] == 1 || /* 802.3x Pause address */
933 new_addr[5] == 2 || /* 802.3ad Slow protocols */
934 new_addr[5] == 3) /* 802.1X PAE address */
935 return -EINVAL;
936 spin_lock_bh(&br->lock);
937 memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
938 spin_unlock_bh(&br->lock);
939 br->group_addr_set = true;
940 br_recalculate_fwd_mask(br);
941 }
942
943 if (data[IFLA_BR_FDB_FLUSH])
944 br_fdb_flush(br);
945
946 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
947 if (data[IFLA_BR_MCAST_ROUTER]) {
948 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
949
950 err = br_multicast_set_router(br, multicast_router);
951 if (err)
952 return err;
953 }
954
955 if (data[IFLA_BR_MCAST_SNOOPING]) {
956 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
957
958 err = br_multicast_toggle(br, mcast_snooping);
959 if (err)
960 return err;
961 }
962
963 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
964 u8 val;
965
966 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
967 br->multicast_query_use_ifaddr = !!val;
968 }
969
970 if (data[IFLA_BR_MCAST_QUERIER]) {
971 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
972
973 err = br_multicast_set_querier(br, mcast_querier);
974 if (err)
975 return err;
976 }
977
978 if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) {
979 u32 val = nla_get_u32(data[IFLA_BR_MCAST_HASH_ELASTICITY]);
980
981 br->hash_elasticity = val;
982 }
983
984 if (data[IFLA_BR_MCAST_HASH_MAX]) {
985 u32 hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
986
987 err = br_multicast_set_hash_max(br, hash_max);
988 if (err)
989 return err;
990 }
991
992 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
993 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
994
995 br->multicast_last_member_count = val;
996 }
997
998 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
999 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
1000
1001 br->multicast_startup_query_count = val;
1002 }
1003
1004 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
1005 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
1006
1007 br->multicast_last_member_interval = clock_t_to_jiffies(val);
1008 }
1009
1010 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
1011 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
1012
1013 br->multicast_membership_interval = clock_t_to_jiffies(val);
1014 }
1015
1016 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
1017 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
1018
1019 br->multicast_querier_interval = clock_t_to_jiffies(val);
1020 }
1021
1022 if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
1023 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
1024
1025 br->multicast_query_interval = clock_t_to_jiffies(val);
1026 }
1027
1028 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
1029 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
1030
1031 br->multicast_query_response_interval = clock_t_to_jiffies(val);
1032 }
1033
1034 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
1035 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
1036
1037 br->multicast_startup_query_interval = clock_t_to_jiffies(val);
1038 }
1039 #endif
1040 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1041 if (data[IFLA_BR_NF_CALL_IPTABLES]) {
1042 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
1043
1044 br->nf_call_iptables = val ? true : false;
1045 }
1046
1047 if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
1048 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
1049
1050 br->nf_call_ip6tables = val ? true : false;
1051 }
1052
1053 if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
1054 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
1055
1056 br->nf_call_arptables = val ? true : false;
1057 }
1058 #endif
1059
1060 return 0;
1061 }
1062
1063 static size_t br_get_size(const struct net_device *brdev)
1064 {
1065 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */
1066 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */
1067 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */
1068 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */
1069 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */
1070 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */
1071 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */
1072 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1073 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
1074 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */
1075 #endif
1076 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */
1077 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */
1078 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */
1079 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */
1080 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */
1081 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */
1082 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
1083 nla_total_size(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
1084 nla_total_size(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
1085 nla_total_size(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
1086 nla_total_size(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
1087 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */
1088 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1089 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */
1090 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */
1091 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
1092 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */
1093 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */
1094 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */
1095 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
1096 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
1097 nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
1098 nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
1099 nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
1100 nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
1101 nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
1102 nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
1103 #endif
1104 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1105 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */
1106 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */
1107 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */
1108 #endif
1109 0;
1110 }
1111
1112 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
1113 {
1114 struct net_bridge *br = netdev_priv(brdev);
1115 u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
1116 u32 hello_time = jiffies_to_clock_t(br->hello_time);
1117 u32 age_time = jiffies_to_clock_t(br->max_age);
1118 u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
1119 u32 stp_enabled = br->stp_enabled;
1120 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
1121 u8 vlan_enabled = br_vlan_enabled(br);
1122 u64 clockval;
1123
1124 clockval = br_timer_value(&br->hello_timer);
1125 if (nla_put_u64(skb, IFLA_BR_HELLO_TIMER, clockval))
1126 return -EMSGSIZE;
1127 clockval = br_timer_value(&br->tcn_timer);
1128 if (nla_put_u64(skb, IFLA_BR_TCN_TIMER, clockval))
1129 return -EMSGSIZE;
1130 clockval = br_timer_value(&br->topology_change_timer);
1131 if (nla_put_u64(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval))
1132 return -EMSGSIZE;
1133 clockval = br_timer_value(&br->gc_timer);
1134 if (nla_put_u64(skb, IFLA_BR_GC_TIMER, clockval))
1135 return -EMSGSIZE;
1136
1137 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
1138 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
1139 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
1140 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
1141 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
1142 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
1143 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
1144 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
1145 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
1146 &br->bridge_id) ||
1147 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
1148 &br->designated_root) ||
1149 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
1150 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
1151 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
1152 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
1153 br->topology_change_detected) ||
1154 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr))
1155 return -EMSGSIZE;
1156
1157 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1158 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
1159 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid))
1160 return -EMSGSIZE;
1161 #endif
1162 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1163 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
1164 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, !br->multicast_disabled) ||
1165 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
1166 br->multicast_query_use_ifaddr) ||
1167 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, br->multicast_querier) ||
1168 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY,
1169 br->hash_elasticity) ||
1170 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
1171 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
1172 br->multicast_last_member_count) ||
1173 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
1174 br->multicast_startup_query_count))
1175 return -EMSGSIZE;
1176
1177 clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
1178 if (nla_put_u64(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval))
1179 return -EMSGSIZE;
1180 clockval = jiffies_to_clock_t(br->multicast_membership_interval);
1181 if (nla_put_u64(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval))
1182 return -EMSGSIZE;
1183 clockval = jiffies_to_clock_t(br->multicast_querier_interval);
1184 if (nla_put_u64(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval))
1185 return -EMSGSIZE;
1186 clockval = jiffies_to_clock_t(br->multicast_query_interval);
1187 if (nla_put_u64(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval))
1188 return -EMSGSIZE;
1189 clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
1190 if (nla_put_u64(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval))
1191 return -EMSGSIZE;
1192 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
1193 if (nla_put_u64(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval))
1194 return -EMSGSIZE;
1195 #endif
1196 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1197 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
1198 br->nf_call_iptables ? 1 : 0) ||
1199 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
1200 br->nf_call_ip6tables ? 1 : 0) ||
1201 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
1202 br->nf_call_arptables ? 1 : 0))
1203 return -EMSGSIZE;
1204 #endif
1205
1206 return 0;
1207 }
1208
1209 static size_t br_get_link_af_size(const struct net_device *dev)
1210 {
1211 struct net_bridge_port *p;
1212 struct net_bridge *br;
1213 int num_vlans = 0;
1214
1215 if (br_port_exists(dev)) {
1216 p = br_port_get_rtnl(dev);
1217 num_vlans = br_get_num_vlan_infos(nbp_vlan_group(p),
1218 RTEXT_FILTER_BRVLAN);
1219 } else if (dev->priv_flags & IFF_EBRIDGE) {
1220 br = netdev_priv(dev);
1221 num_vlans = br_get_num_vlan_infos(br_vlan_group(br),
1222 RTEXT_FILTER_BRVLAN);
1223 }
1224
1225 /* Each VLAN is returned in bridge_vlan_info along with flags */
1226 return num_vlans * nla_total_size(sizeof(struct bridge_vlan_info));
1227 }
1228
1229 static struct rtnl_af_ops br_af_ops __read_mostly = {
1230 .family = AF_BRIDGE,
1231 .get_link_af_size = br_get_link_af_size,
1232 };
1233
1234 struct rtnl_link_ops br_link_ops __read_mostly = {
1235 .kind = "bridge",
1236 .priv_size = sizeof(struct net_bridge),
1237 .setup = br_dev_setup,
1238 .maxtype = IFLA_BR_MAX,
1239 .policy = br_policy,
1240 .validate = br_validate,
1241 .newlink = br_dev_newlink,
1242 .changelink = br_changelink,
1243 .dellink = br_dev_delete,
1244 .get_size = br_get_size,
1245 .fill_info = br_fill_info,
1246
1247 .slave_maxtype = IFLA_BRPORT_MAX,
1248 .slave_policy = br_port_policy,
1249 .slave_changelink = br_port_slave_changelink,
1250 .get_slave_size = br_port_get_slave_size,
1251 .fill_slave_info = br_port_fill_slave_info,
1252 };
1253
1254 int __init br_netlink_init(void)
1255 {
1256 int err;
1257
1258 br_mdb_init();
1259 rtnl_af_register(&br_af_ops);
1260
1261 err = rtnl_link_register(&br_link_ops);
1262 if (err)
1263 goto out_af;
1264
1265 return 0;
1266
1267 out_af:
1268 rtnl_af_unregister(&br_af_ops);
1269 br_mdb_uninit();
1270 return err;
1271 }
1272
1273 void br_netlink_fini(void)
1274 {
1275 br_mdb_uninit();
1276 rtnl_af_unregister(&br_af_ops);
1277 rtnl_link_unregister(&br_link_ops);
1278 }
Linux kernel - Deliverables
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