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Linux 4.18.10
[linux/fpc-iii.git] / net / bridge / br_netlink.c
blob9f5eb05b0373750900cd298a122a16b78c374d31
1 /*
2 * Bridge netlink control interface
3 *
4 * Authors:
5 * Stephen Hemminger <shemminger@osdl.org>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 */
12
13 #include <linux/kernel.h>
14 #include <linux/slab.h>
15 #include <linux/etherdevice.h>
16 #include <net/rtnetlink.h>
17 #include <net/net_namespace.h>
18 #include <net/sock.h>
19 #include <uapi/linux/if_bridge.h>
20
21 #include "br_private.h"
22 #include "br_private_stp.h"
23 #include "br_private_tunnel.h"
24
25 static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
26 u32 filter_mask)
27 {
28 struct net_bridge_vlan *v;
29 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
30 u16 flags, pvid;
31 int num_vlans = 0;
32
33 if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
34 return 0;
35
36 pvid = br_get_pvid(vg);
37 /* Count number of vlan infos */
38 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
39 flags = 0;
40 /* only a context, bridge vlan not activated */
41 if (!br_vlan_should_use(v))
42 continue;
43 if (v->vid == pvid)
44 flags |= BRIDGE_VLAN_INFO_PVID;
45
46 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
47 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
48
49 if (vid_range_start == 0) {
50 goto initvars;
51 } else if ((v->vid - vid_range_end) == 1 &&
52 flags == vid_range_flags) {
53 vid_range_end = v->vid;
54 continue;
55 } else {
56 if ((vid_range_end - vid_range_start) > 0)
57 num_vlans += 2;
58 else
59 num_vlans += 1;
60 }
61 initvars:
62 vid_range_start = v->vid;
63 vid_range_end = v->vid;
64 vid_range_flags = flags;
65 }
66
67 if (vid_range_start != 0) {
68 if ((vid_range_end - vid_range_start) > 0)
69 num_vlans += 2;
70 else
71 num_vlans += 1;
72 }
73
74 return num_vlans;
75 }
76
77 static int br_get_num_vlan_infos(struct net_bridge_vlan_group *vg,
78 u32 filter_mask)
79 {
80 int num_vlans;
81
82 if (!vg)
83 return 0;
84
85 if (filter_mask & RTEXT_FILTER_BRVLAN)
86 return vg->num_vlans;
87
88 rcu_read_lock();
89 num_vlans = __get_num_vlan_infos(vg, filter_mask);
90 rcu_read_unlock();
91
92 return num_vlans;
93 }
94
95 static size_t br_get_link_af_size_filtered(const struct net_device *dev,
96 u32 filter_mask)
97 {
98 struct net_bridge_vlan_group *vg = NULL;
99 struct net_bridge_port *p = NULL;
100 struct net_bridge *br;
101 int num_vlan_infos;
102 size_t vinfo_sz = 0;
103
104 rcu_read_lock();
105 if (br_port_exists(dev)) {
106 p = br_port_get_rcu(dev);
107 vg = nbp_vlan_group_rcu(p);
108 } else if (dev->priv_flags & IFF_EBRIDGE) {
109 br = netdev_priv(dev);
110 vg = br_vlan_group_rcu(br);
111 }
112 num_vlan_infos = br_get_num_vlan_infos(vg, filter_mask);
113 rcu_read_unlock();
114
115 if (p && (p->flags & BR_VLAN_TUNNEL))
116 vinfo_sz += br_get_vlan_tunnel_info_size(vg);
117
118 /* Each VLAN is returned in bridge_vlan_info along with flags */
119 vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
120
121 return vinfo_sz;
122 }
123
124 static inline size_t br_port_info_size(void)
125 {
126 return nla_total_size(1) /* IFLA_BRPORT_STATE */
127 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */
128 + nla_total_size(4) /* IFLA_BRPORT_COST */
129 + nla_total_size(1) /* IFLA_BRPORT_MODE */
130 + nla_total_size(1) /* IFLA_BRPORT_GUARD */
131 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */
132 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
133 + nla_total_size(1) /* IFLA_BRPORT_MCAST_TO_UCAST */
134 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */
135 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
136 + nla_total_size(1) /* IFLA_BRPORT_MCAST_FLOOD */
137 + nla_total_size(1) /* IFLA_BRPORT_BCAST_FLOOD */
138 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
139 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
140 + nla_total_size(1) /* IFLA_BRPORT_VLAN_TUNNEL */
141 + nla_total_size(1) /* IFLA_BRPORT_NEIGH_SUPPRESS */
142 + nla_total_size(1) /* IFLA_BRPORT_ISOLATED */
143 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_ROOT_ID */
144 + nla_total_size(sizeof(struct ifla_bridge_id)) /* IFLA_BRPORT_BRIDGE_ID */
145 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_PORT */
146 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_DESIGNATED_COST */
147 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_ID */
148 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_NO */
149 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_TOPOLOGY_CHANGE_ACK */
150 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_CONFIG_PENDING */
151 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_MESSAGE_AGE_TIMER */
152 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_FORWARD_DELAY_TIMER */
153 + nla_total_size_64bit(sizeof(u64)) /* IFLA_BRPORT_HOLD_TIMER */
154 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
155 + nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MULTICAST_ROUTER */
156 #endif
157 + nla_total_size(sizeof(u16)) /* IFLA_BRPORT_GROUP_FWD_MASK */
158 + 0;
159 }
160
161 static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask)
162 {
163 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
164 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
165 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
166 + nla_total_size(4) /* IFLA_MASTER */
167 + nla_total_size(4) /* IFLA_MTU */
168 + nla_total_size(4) /* IFLA_LINK */
169 + nla_total_size(1) /* IFLA_OPERSTATE */
170 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
171 + nla_total_size(br_get_link_af_size_filtered(dev,
172 filter_mask)); /* IFLA_AF_SPEC */
173 }
174
175 static int br_port_fill_attrs(struct sk_buff *skb,
176 const struct net_bridge_port *p)
177 {
178 u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
179 u64 timerval;
180
181 if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
182 nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
183 nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
184 nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
185 nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
186 nla_put_u8(skb, IFLA_BRPORT_PROTECT,
187 !!(p->flags & BR_ROOT_BLOCK)) ||
188 nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE,
189 !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
190 nla_put_u8(skb, IFLA_BRPORT_MCAST_TO_UCAST,
191 !!(p->flags & BR_MULTICAST_TO_UNICAST)) ||
192 nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
193 nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD,
194 !!(p->flags & BR_FLOOD)) ||
195 nla_put_u8(skb, IFLA_BRPORT_MCAST_FLOOD,
196 !!(p->flags & BR_MCAST_FLOOD)) ||
197 nla_put_u8(skb, IFLA_BRPORT_BCAST_FLOOD,
198 !!(p->flags & BR_BCAST_FLOOD)) ||
199 nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) ||
200 nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI,
201 !!(p->flags & BR_PROXYARP_WIFI)) ||
202 nla_put(skb, IFLA_BRPORT_ROOT_ID, sizeof(struct ifla_bridge_id),
203 &p->designated_root) ||
204 nla_put(skb, IFLA_BRPORT_BRIDGE_ID, sizeof(struct ifla_bridge_id),
205 &p->designated_bridge) ||
206 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_PORT, p->designated_port) ||
207 nla_put_u16(skb, IFLA_BRPORT_DESIGNATED_COST, p->designated_cost) ||
208 nla_put_u16(skb, IFLA_BRPORT_ID, p->port_id) ||
209 nla_put_u16(skb, IFLA_BRPORT_NO, p->port_no) ||
210 nla_put_u8(skb, IFLA_BRPORT_TOPOLOGY_CHANGE_ACK,
211 p->topology_change_ack) ||
212 nla_put_u8(skb, IFLA_BRPORT_CONFIG_PENDING, p->config_pending) ||
213 nla_put_u8(skb, IFLA_BRPORT_VLAN_TUNNEL, !!(p->flags &
214 BR_VLAN_TUNNEL)) ||
215 nla_put_u16(skb, IFLA_BRPORT_GROUP_FWD_MASK, p->group_fwd_mask) ||
216 nla_put_u8(skb, IFLA_BRPORT_NEIGH_SUPPRESS,
217 !!(p->flags & BR_NEIGH_SUPPRESS)) ||
218 nla_put_u8(skb, IFLA_BRPORT_ISOLATED, !!(p->flags & BR_ISOLATED)))
219 return -EMSGSIZE;
220
221 timerval = br_timer_value(&p->message_age_timer);
222 if (nla_put_u64_64bit(skb, IFLA_BRPORT_MESSAGE_AGE_TIMER, timerval,
223 IFLA_BRPORT_PAD))
224 return -EMSGSIZE;
225 timerval = br_timer_value(&p->forward_delay_timer);
226 if (nla_put_u64_64bit(skb, IFLA_BRPORT_FORWARD_DELAY_TIMER, timerval,
227 IFLA_BRPORT_PAD))
228 return -EMSGSIZE;
229 timerval = br_timer_value(&p->hold_timer);
230 if (nla_put_u64_64bit(skb, IFLA_BRPORT_HOLD_TIMER, timerval,
231 IFLA_BRPORT_PAD))
232 return -EMSGSIZE;
233
234 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
235 if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
236 p->multicast_router))
237 return -EMSGSIZE;
238 #endif
239
240 return 0;
241 }
242
243 static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
244 u16 vid_end, u16 flags)
245 {
246 struct bridge_vlan_info vinfo;
247
248 if ((vid_end - vid_start) > 0) {
249 /* add range to skb */
250 vinfo.vid = vid_start;
251 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
252 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
253 sizeof(vinfo), &vinfo))
254 goto nla_put_failure;
255
256 vinfo.vid = vid_end;
257 vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
258 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
259 sizeof(vinfo), &vinfo))
260 goto nla_put_failure;
261 } else {
262 vinfo.vid = vid_start;
263 vinfo.flags = flags;
264 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
265 sizeof(vinfo), &vinfo))
266 goto nla_put_failure;
267 }
268
269 return 0;
270
271 nla_put_failure:
272 return -EMSGSIZE;
273 }
274
275 static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
276 struct net_bridge_vlan_group *vg)
277 {
278 struct net_bridge_vlan *v;
279 u16 vid_range_start = 0, vid_range_end = 0, vid_range_flags = 0;
280 u16 flags, pvid;
281 int err = 0;
282
283 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
284 * and mark vlan info with begin and end flags
285 * if vlaninfo represents a range
286 */
287 pvid = br_get_pvid(vg);
288 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
289 flags = 0;
290 if (!br_vlan_should_use(v))
291 continue;
292 if (v->vid == pvid)
293 flags |= BRIDGE_VLAN_INFO_PVID;
294
295 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
296 flags |= BRIDGE_VLAN_INFO_UNTAGGED;
297
298 if (vid_range_start == 0) {
299 goto initvars;
300 } else if ((v->vid - vid_range_end) == 1 &&
301 flags == vid_range_flags) {
302 vid_range_end = v->vid;
303 continue;
304 } else {
305 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
306 vid_range_end,
307 vid_range_flags);
308 if (err)
309 return err;
310 }
311
312 initvars:
313 vid_range_start = v->vid;
314 vid_range_end = v->vid;
315 vid_range_flags = flags;
316 }
317
318 if (vid_range_start != 0) {
319 /* Call it once more to send any left over vlans */
320 err = br_fill_ifvlaninfo_range(skb, vid_range_start,
321 vid_range_end,
322 vid_range_flags);
323 if (err)
324 return err;
325 }
326
327 return 0;
328 }
329
330 static int br_fill_ifvlaninfo(struct sk_buff *skb,
331 struct net_bridge_vlan_group *vg)
332 {
333 struct bridge_vlan_info vinfo;
334 struct net_bridge_vlan *v;
335 u16 pvid;
336
337 pvid = br_get_pvid(vg);
338 list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
339 if (!br_vlan_should_use(v))
340 continue;
341
342 vinfo.vid = v->vid;
343 vinfo.flags = 0;
344 if (v->vid == pvid)
345 vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
346
347 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
348 vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
349
350 if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
351 sizeof(vinfo), &vinfo))
352 goto nla_put_failure;
353 }
354
355 return 0;
356
357 nla_put_failure:
358 return -EMSGSIZE;
359 }
360
361 /*
362 * Create one netlink message for one interface
363 * Contains port and master info as well as carrier and bridge state.
364 */
365 static int br_fill_ifinfo(struct sk_buff *skb,
366 const struct net_bridge_port *port,
367 u32 pid, u32 seq, int event, unsigned int flags,
368 u32 filter_mask, const struct net_device *dev)
369 {
370 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
371 struct net_bridge *br;
372 struct ifinfomsg *hdr;
373 struct nlmsghdr *nlh;
374
375 if (port)
376 br = port->br;
377 else
378 br = netdev_priv(dev);
379
380 br_debug(br, "br_fill_info event %d port %s master %s\n",
381 event, dev->name, br->dev->name);
382
383 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
384 if (nlh == NULL)
385 return -EMSGSIZE;
386
387 hdr = nlmsg_data(nlh);
388 hdr->ifi_family = AF_BRIDGE;
389 hdr->__ifi_pad = 0;
390 hdr->ifi_type = dev->type;
391 hdr->ifi_index = dev->ifindex;
392 hdr->ifi_flags = dev_get_flags(dev);
393 hdr->ifi_change = 0;
394
395 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
396 nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
397 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
398 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
399 (dev->addr_len &&
400 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
401 (dev->ifindex != dev_get_iflink(dev) &&
402 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
403 goto nla_put_failure;
404
405 if (event == RTM_NEWLINK && port) {
406 struct nlattr *nest
407 = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED);
408
409 if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
410 goto nla_put_failure;
411 nla_nest_end(skb, nest);
412 }
413
414 /* Check if the VID information is requested */
415 if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
416 (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
417 struct net_bridge_vlan_group *vg;
418 struct nlattr *af;
419 int err;
420
421 /* RCU needed because of the VLAN locking rules (rcu || rtnl) */
422 rcu_read_lock();
423 if (port)
424 vg = nbp_vlan_group_rcu(port);
425 else
426 vg = br_vlan_group_rcu(br);
427
428 if (!vg || !vg->num_vlans) {
429 rcu_read_unlock();
430 goto done;
431 }
432 af = nla_nest_start(skb, IFLA_AF_SPEC);
433 if (!af) {
434 rcu_read_unlock();
435 goto nla_put_failure;
436 }
437 if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
438 err = br_fill_ifvlaninfo_compressed(skb, vg);
439 else
440 err = br_fill_ifvlaninfo(skb, vg);
441
442 if (port && (port->flags & BR_VLAN_TUNNEL))
443 err = br_fill_vlan_tunnel_info(skb, vg);
444 rcu_read_unlock();
445 if (err)
446 goto nla_put_failure;
447 nla_nest_end(skb, af);
448 }
449
450 done:
451 nlmsg_end(skb, nlh);
452 return 0;
453
454 nla_put_failure:
455 nlmsg_cancel(skb, nlh);
456 return -EMSGSIZE;
457 }
458
459 /* Notify listeners of a change in bridge or port information */
460 void br_ifinfo_notify(int event, const struct net_bridge *br,
461 const struct net_bridge_port *port)
462 {
463 u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
464 struct net_device *dev;
465 struct sk_buff *skb;
466 int err = -ENOBUFS;
467 struct net *net;
468 u16 port_no = 0;
469
470 if (WARN_ON(!port && !br))
471 return;
472
473 if (port) {
474 dev = port->dev;
475 br = port->br;
476 port_no = port->port_no;
477 } else {
478 dev = br->dev;
479 }
480
481 net = dev_net(dev);
482 br_debug(br, "port %u(%s) event %d\n", port_no, dev->name, event);
483
484 skb = nlmsg_new(br_nlmsg_size(dev, filter), GFP_ATOMIC);
485 if (skb == NULL)
486 goto errout;
487
488 err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev);
489 if (err < 0) {
490 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
491 WARN_ON(err == -EMSGSIZE);
492 kfree_skb(skb);
493 goto errout;
494 }
495 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
496 return;
497 errout:
498 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
499 }
500
501 /*
502 * Dump information about all ports, in response to GETLINK
503 */
504 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
505 struct net_device *dev, u32 filter_mask, int nlflags)
506 {
507 struct net_bridge_port *port = br_port_get_rtnl(dev);
508
509 if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
510 !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
511 return 0;
512
513 return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
514 filter_mask, dev);
515 }
516
517 static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
518 int cmd, struct bridge_vlan_info *vinfo, bool *changed)
519 {
520 bool curr_change;
521 int err = 0;
522
523 switch (cmd) {
524 case RTM_SETLINK:
525 if (p) {
526 /* if the MASTER flag is set this will act on the global
527 * per-VLAN entry as well
528 */
529 err = nbp_vlan_add(p, vinfo->vid, vinfo->flags,
530 &curr_change);
531 } else {
532 vinfo->flags |= BRIDGE_VLAN_INFO_BRENTRY;
533 err = br_vlan_add(br, vinfo->vid, vinfo->flags,
534 &curr_change);
535 }
536 if (curr_change)
537 *changed = true;
538 break;
539
540 case RTM_DELLINK:
541 if (p) {
542 if (!nbp_vlan_delete(p, vinfo->vid))
543 *changed = true;
544
545 if ((vinfo->flags & BRIDGE_VLAN_INFO_MASTER) &&
546 !br_vlan_delete(p->br, vinfo->vid))
547 *changed = true;
548 } else if (!br_vlan_delete(br, vinfo->vid)) {
549 *changed = true;
550 }
551 break;
552 }
553
554 return err;
555 }
556
557 static int br_process_vlan_info(struct net_bridge *br,
558 struct net_bridge_port *p, int cmd,
559 struct bridge_vlan_info *vinfo_curr,
560 struct bridge_vlan_info **vinfo_last,
561 bool *changed)
562 {
563 if (!vinfo_curr->vid || vinfo_curr->vid >= VLAN_VID_MASK)
564 return -EINVAL;
565
566 if (vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
567 /* check if we are already processing a range */
568 if (*vinfo_last)
569 return -EINVAL;
570 *vinfo_last = vinfo_curr;
571 /* don't allow range of pvids */
572 if ((*vinfo_last)->flags & BRIDGE_VLAN_INFO_PVID)
573 return -EINVAL;
574 return 0;
575 }
576
577 if (*vinfo_last) {
578 struct bridge_vlan_info tmp_vinfo;
579 int v, err;
580
581 if (!(vinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_END))
582 return -EINVAL;
583
584 if (vinfo_curr->vid <= (*vinfo_last)->vid)
585 return -EINVAL;
586
587 memcpy(&tmp_vinfo, *vinfo_last,
588 sizeof(struct bridge_vlan_info));
589 for (v = (*vinfo_last)->vid; v <= vinfo_curr->vid; v++) {
590 tmp_vinfo.vid = v;
591 err = br_vlan_info(br, p, cmd, &tmp_vinfo, changed);
592 if (err)
593 break;
594 }
595 *vinfo_last = NULL;
596
597 return err;
598 }
599
600 return br_vlan_info(br, p, cmd, vinfo_curr, changed);
601 }
602
603 static int br_afspec(struct net_bridge *br,
604 struct net_bridge_port *p,
605 struct nlattr *af_spec,
606 int cmd, bool *changed)
607 {
608 struct bridge_vlan_info *vinfo_curr = NULL;
609 struct bridge_vlan_info *vinfo_last = NULL;
610 struct nlattr *attr;
611 struct vtunnel_info tinfo_last = {};
612 struct vtunnel_info tinfo_curr = {};
613 int err = 0, rem;
614
615 nla_for_each_nested(attr, af_spec, rem) {
616 err = 0;
617 switch (nla_type(attr)) {
618 case IFLA_BRIDGE_VLAN_TUNNEL_INFO:
619 if (!p || !(p->flags & BR_VLAN_TUNNEL))
620 return -EINVAL;
621 err = br_parse_vlan_tunnel_info(attr, &tinfo_curr);
622 if (err)
623 return err;
624 err = br_process_vlan_tunnel_info(br, p, cmd,
625 &tinfo_curr,
626 &tinfo_last,
627 changed);
628 if (err)
629 return err;
630 break;
631 case IFLA_BRIDGE_VLAN_INFO:
632 if (nla_len(attr) != sizeof(struct bridge_vlan_info))
633 return -EINVAL;
634 vinfo_curr = nla_data(attr);
635 err = br_process_vlan_info(br, p, cmd, vinfo_curr,
636 &vinfo_last, changed);
637 if (err)
638 return err;
639 break;
640 }
641 }
642
643 return err;
644 }
645
646 static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
647 [IFLA_BRPORT_STATE] = { .type = NLA_U8 },
648 [IFLA_BRPORT_COST] = { .type = NLA_U32 },
649 [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
650 [IFLA_BRPORT_MODE] = { .type = NLA_U8 },
651 [IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
652 [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
653 [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
654 [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
655 [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
656 [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 },
657 [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 },
658 [IFLA_BRPORT_MULTICAST_ROUTER] = { .type = NLA_U8 },
659 [IFLA_BRPORT_MCAST_TO_UCAST] = { .type = NLA_U8 },
660 [IFLA_BRPORT_MCAST_FLOOD] = { .type = NLA_U8 },
661 [IFLA_BRPORT_BCAST_FLOOD] = { .type = NLA_U8 },
662 [IFLA_BRPORT_VLAN_TUNNEL] = { .type = NLA_U8 },
663 [IFLA_BRPORT_GROUP_FWD_MASK] = { .type = NLA_U16 },
664 [IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 },
665 [IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 },
666 };
667
668 /* Change the state of the port and notify spanning tree */
669 static int br_set_port_state(struct net_bridge_port *p, u8 state)
670 {
671 if (state > BR_STATE_BLOCKING)
672 return -EINVAL;
673
674 /* if kernel STP is running, don't allow changes */
675 if (p->br->stp_enabled == BR_KERNEL_STP)
676 return -EBUSY;
677
678 /* if device is not up, change is not allowed
679 * if link is not present, only allowable state is disabled
680 */
681 if (!netif_running(p->dev) ||
682 (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
683 return -ENETDOWN;
684
685 br_set_state(p, state);
686 br_port_state_selection(p->br);
687 return 0;
688 }
689
690 /* Set/clear or port flags based on attribute */
691 static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
692 int attrtype, unsigned long mask)
693 {
694 unsigned long flags;
695 int err;
696
697 if (!tb[attrtype])
698 return 0;
699
700 if (nla_get_u8(tb[attrtype]))
701 flags = p->flags | mask;
702 else
703 flags = p->flags & ~mask;
704
705 err = br_switchdev_set_port_flag(p, flags, mask);
706 if (err)
707 return err;
708
709 p->flags = flags;
710 return 0;
711 }
712
713 /* Process bridge protocol info on port */
714 static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
715 {
716 unsigned long old_flags = p->flags;
717 bool br_vlan_tunnel_old = false;
718 int err;
719
720 err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
721 if (err)
722 return err;
723
724 err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
725 if (err)
726 return err;
727
728 err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
729 if (err)
730 return err;
731
732 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
733 if (err)
734 return err;
735
736 err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
737 if (err)
738 return err;
739
740 err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
741 if (err)
742 return err;
743
744 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD);
745 if (err)
746 return err;
747
748 err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST);
749 if (err)
750 return err;
751
752 err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD);
753 if (err)
754 return err;
755
756 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
757 if (err)
758 return err;
759
760 err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI);
761 if (err)
762 return err;
763
764 br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false;
765 err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL);
766 if (err)
767 return err;
768
769 if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL))
770 nbp_vlan_tunnel_info_flush(p);
771
772 if (tb[IFLA_BRPORT_COST]) {
773 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
774 if (err)
775 return err;
776 }
777
778 if (tb[IFLA_BRPORT_PRIORITY]) {
779 err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
780 if (err)
781 return err;
782 }
783
784 if (tb[IFLA_BRPORT_STATE]) {
785 err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
786 if (err)
787 return err;
788 }
789
790 if (tb[IFLA_BRPORT_FLUSH])
791 br_fdb_delete_by_port(p->br, p, 0, 0);
792
793 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
794 if (tb[IFLA_BRPORT_MULTICAST_ROUTER]) {
795 u8 mcast_router = nla_get_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]);
796
797 err = br_multicast_set_port_router(p, mcast_router);
798 if (err)
799 return err;
800 }
801 #endif
802
803 if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
804 u16 fwd_mask = nla_get_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]);
805
806 if (fwd_mask & BR_GROUPFWD_MACPAUSE)
807 return -EINVAL;
808 p->group_fwd_mask = fwd_mask;
809 }
810
811 err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS,
812 BR_NEIGH_SUPPRESS);
813 if (err)
814 return err;
815
816 err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED);
817 if (err)
818 return err;
819
820 br_port_flags_change(p, old_flags ^ p->flags);
821 return 0;
822 }
823
824 /* Change state and parameters on port. */
825 int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
826 {
827 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
828 struct nlattr *tb[IFLA_BRPORT_MAX + 1];
829 struct net_bridge_port *p;
830 struct nlattr *protinfo;
831 struct nlattr *afspec;
832 bool changed = false;
833 int err = 0;
834
835 protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
836 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
837 if (!protinfo && !afspec)
838 return 0;
839
840 p = br_port_get_rtnl(dev);
841 /* We want to accept dev as bridge itself if the AF_SPEC
842 * is set to see if someone is setting vlan info on the bridge
843 */
844 if (!p && !afspec)
845 return -EINVAL;
846
847 if (p && protinfo) {
848 if (protinfo->nla_type & NLA_F_NESTED) {
849 err = nla_parse_nested(tb, IFLA_BRPORT_MAX, protinfo,
850 br_port_policy, NULL);
851 if (err)
852 return err;
853
854 spin_lock_bh(&p->br->lock);
855 err = br_setport(p, tb);
856 spin_unlock_bh(&p->br->lock);
857 } else {
858 /* Binary compatibility with old RSTP */
859 if (nla_len(protinfo) < sizeof(u8))
860 return -EINVAL;
861
862 spin_lock_bh(&p->br->lock);
863 err = br_set_port_state(p, nla_get_u8(protinfo));
864 spin_unlock_bh(&p->br->lock);
865 }
866 if (err)
867 goto out;
868 changed = true;
869 }
870
871 if (afspec)
872 err = br_afspec(br, p, afspec, RTM_SETLINK, &changed);
873
874 if (changed)
875 br_ifinfo_notify(RTM_NEWLINK, br, p);
876 out:
877 return err;
878 }
879
880 /* Delete port information */
881 int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
882 {
883 struct net_bridge *br = (struct net_bridge *)netdev_priv(dev);
884 struct net_bridge_port *p;
885 struct nlattr *afspec;
886 bool changed = false;
887 int err = 0;
888
889 afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
890 if (!afspec)
891 return 0;
892
893 p = br_port_get_rtnl(dev);
894 /* We want to accept dev as bridge itself as well */
895 if (!p && !(dev->priv_flags & IFF_EBRIDGE))
896 return -EINVAL;
897
898 err = br_afspec(br, p, afspec, RTM_DELLINK, &changed);
899 if (changed)
900 /* Send RTM_NEWLINK because userspace
901 * expects RTM_NEWLINK for vlan dels
902 */
903 br_ifinfo_notify(RTM_NEWLINK, br, p);
904
905 return err;
906 }
907
908 static int br_validate(struct nlattr *tb[], struct nlattr *data[],
909 struct netlink_ext_ack *extack)
910 {
911 if (tb[IFLA_ADDRESS]) {
912 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
913 return -EINVAL;
914 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
915 return -EADDRNOTAVAIL;
916 }
917
918 if (!data)
919 return 0;
920
921 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
922 if (data[IFLA_BR_VLAN_PROTOCOL]) {
923 switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) {
924 case htons(ETH_P_8021Q):
925 case htons(ETH_P_8021AD):
926 break;
927 default:
928 return -EPROTONOSUPPORT;
929 }
930 }
931
932 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
933 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
934
935 if (defpvid >= VLAN_VID_MASK)
936 return -EINVAL;
937 }
938 #endif
939
940 return 0;
941 }
942
943 static int br_port_slave_changelink(struct net_device *brdev,
944 struct net_device *dev,
945 struct nlattr *tb[],
946 struct nlattr *data[],
947 struct netlink_ext_ack *extack)
948 {
949 struct net_bridge *br = netdev_priv(brdev);
950 int ret;
951
952 if (!data)
953 return 0;
954
955 spin_lock_bh(&br->lock);
956 ret = br_setport(br_port_get_rtnl(dev), data);
957 spin_unlock_bh(&br->lock);
958
959 return ret;
960 }
961
962 static int br_port_fill_slave_info(struct sk_buff *skb,
963 const struct net_device *brdev,
964 const struct net_device *dev)
965 {
966 return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
967 }
968
969 static size_t br_port_get_slave_size(const struct net_device *brdev,
970 const struct net_device *dev)
971 {
972 return br_port_info_size();
973 }
974
975 static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
976 [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
977 [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
978 [IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
979 [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 },
980 [IFLA_BR_STP_STATE] = { .type = NLA_U32 },
981 [IFLA_BR_PRIORITY] = { .type = NLA_U16 },
982 [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
983 [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
984 [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
985 [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY,
986 .len = ETH_ALEN },
987 [IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
988 [IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
989 [IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
990 [IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
991 [IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
992 [IFLA_BR_MCAST_HASH_MAX] = { .type = NLA_U32 },
993 [IFLA_BR_MCAST_LAST_MEMBER_CNT] = { .type = NLA_U32 },
994 [IFLA_BR_MCAST_STARTUP_QUERY_CNT] = { .type = NLA_U32 },
995 [IFLA_BR_MCAST_LAST_MEMBER_INTVL] = { .type = NLA_U64 },
996 [IFLA_BR_MCAST_MEMBERSHIP_INTVL] = { .type = NLA_U64 },
997 [IFLA_BR_MCAST_QUERIER_INTVL] = { .type = NLA_U64 },
998 [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 },
999 [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 },
1000 [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 },
1001 [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
1002 [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
1003 [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
1004 [IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
1005 [IFLA_BR_VLAN_STATS_ENABLED] = { .type = NLA_U8 },
1006 [IFLA_BR_MCAST_STATS_ENABLED] = { .type = NLA_U8 },
1007 [IFLA_BR_MCAST_IGMP_VERSION] = { .type = NLA_U8 },
1008 [IFLA_BR_MCAST_MLD_VERSION] = { .type = NLA_U8 },
1009 };
1010
1011 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
1012 struct nlattr *data[],
1013 struct netlink_ext_ack *extack)
1014 {
1015 struct net_bridge *br = netdev_priv(brdev);
1016 int err;
1017
1018 if (!data)
1019 return 0;
1020
1021 if (data[IFLA_BR_FORWARD_DELAY]) {
1022 err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
1023 if (err)
1024 return err;
1025 }
1026
1027 if (data[IFLA_BR_HELLO_TIME]) {
1028 err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
1029 if (err)
1030 return err;
1031 }
1032
1033 if (data[IFLA_BR_MAX_AGE]) {
1034 err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
1035 if (err)
1036 return err;
1037 }
1038
1039 if (data[IFLA_BR_AGEING_TIME]) {
1040 err = br_set_ageing_time(br, nla_get_u32(data[IFLA_BR_AGEING_TIME]));
1041 if (err)
1042 return err;
1043 }
1044
1045 if (data[IFLA_BR_STP_STATE]) {
1046 u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]);
1047
1048 br_stp_set_enabled(br, stp_enabled);
1049 }
1050
1051 if (data[IFLA_BR_PRIORITY]) {
1052 u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]);
1053
1054 br_stp_set_bridge_priority(br, priority);
1055 }
1056
1057 if (data[IFLA_BR_VLAN_FILTERING]) {
1058 u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]);
1059
1060 err = __br_vlan_filter_toggle(br, vlan_filter);
1061 if (err)
1062 return err;
1063 }
1064
1065 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1066 if (data[IFLA_BR_VLAN_PROTOCOL]) {
1067 __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]);
1068
1069 err = __br_vlan_set_proto(br, vlan_proto);
1070 if (err)
1071 return err;
1072 }
1073
1074 if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
1075 __u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
1076
1077 err = __br_vlan_set_default_pvid(br, defpvid);
1078 if (err)
1079 return err;
1080 }
1081
1082 if (data[IFLA_BR_VLAN_STATS_ENABLED]) {
1083 __u8 vlan_stats = nla_get_u8(data[IFLA_BR_VLAN_STATS_ENABLED]);
1084
1085 err = br_vlan_set_stats(br, vlan_stats);
1086 if (err)
1087 return err;
1088 }
1089 #endif
1090
1091 if (data[IFLA_BR_GROUP_FWD_MASK]) {
1092 u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
1093
1094 if (fwd_mask & BR_GROUPFWD_RESTRICTED)
1095 return -EINVAL;
1096 br->group_fwd_mask = fwd_mask;
1097 }
1098
1099 if (data[IFLA_BR_GROUP_ADDR]) {
1100 u8 new_addr[ETH_ALEN];
1101
1102 if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN)
1103 return -EINVAL;
1104 memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN);
1105 if (!is_link_local_ether_addr(new_addr))
1106 return -EINVAL;
1107 if (new_addr[5] == 1 || /* 802.3x Pause address */
1108 new_addr[5] == 2 || /* 802.3ad Slow protocols */
1109 new_addr[5] == 3) /* 802.1X PAE address */
1110 return -EINVAL;
1111 spin_lock_bh(&br->lock);
1112 memcpy(br->group_addr, new_addr, sizeof(br->group_addr));
1113 spin_unlock_bh(&br->lock);
1114 br->group_addr_set = true;
1115 br_recalculate_fwd_mask(br);
1116 }
1117
1118 if (data[IFLA_BR_FDB_FLUSH])
1119 br_fdb_flush(br);
1120
1121 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1122 if (data[IFLA_BR_MCAST_ROUTER]) {
1123 u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
1124
1125 err = br_multicast_set_router(br, multicast_router);
1126 if (err)
1127 return err;
1128 }
1129
1130 if (data[IFLA_BR_MCAST_SNOOPING]) {
1131 u8 mcast_snooping = nla_get_u8(data[IFLA_BR_MCAST_SNOOPING]);
1132
1133 err = br_multicast_toggle(br, mcast_snooping);
1134 if (err)
1135 return err;
1136 }
1137
1138 if (data[IFLA_BR_MCAST_QUERY_USE_IFADDR]) {
1139 u8 val;
1140
1141 val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
1142 br->multicast_query_use_ifaddr = !!val;
1143 }
1144
1145 if (data[IFLA_BR_MCAST_QUERIER]) {
1146 u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
1147
1148 err = br_multicast_set_querier(br, mcast_querier);
1149 if (err)
1150 return err;
1151 }
1152
1153 if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) {
1154 u32 val = nla_get_u32(data[IFLA_BR_MCAST_HASH_ELASTICITY]);
1155
1156 br->hash_elasticity = val;
1157 }
1158
1159 if (data[IFLA_BR_MCAST_HASH_MAX]) {
1160 u32 hash_max = nla_get_u32(data[IFLA_BR_MCAST_HASH_MAX]);
1161
1162 err = br_multicast_set_hash_max(br, hash_max);
1163 if (err)
1164 return err;
1165 }
1166
1167 if (data[IFLA_BR_MCAST_LAST_MEMBER_CNT]) {
1168 u32 val = nla_get_u32(data[IFLA_BR_MCAST_LAST_MEMBER_CNT]);
1169
1170 br->multicast_last_member_count = val;
1171 }
1172
1173 if (data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]) {
1174 u32 val = nla_get_u32(data[IFLA_BR_MCAST_STARTUP_QUERY_CNT]);
1175
1176 br->multicast_startup_query_count = val;
1177 }
1178
1179 if (data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]) {
1180 u64 val = nla_get_u64(data[IFLA_BR_MCAST_LAST_MEMBER_INTVL]);
1181
1182 br->multicast_last_member_interval = clock_t_to_jiffies(val);
1183 }
1184
1185 if (data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]) {
1186 u64 val = nla_get_u64(data[IFLA_BR_MCAST_MEMBERSHIP_INTVL]);
1187
1188 br->multicast_membership_interval = clock_t_to_jiffies(val);
1189 }
1190
1191 if (data[IFLA_BR_MCAST_QUERIER_INTVL]) {
1192 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERIER_INTVL]);
1193
1194 br->multicast_querier_interval = clock_t_to_jiffies(val);
1195 }
1196
1197 if (data[IFLA_BR_MCAST_QUERY_INTVL]) {
1198 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]);
1199
1200 br->multicast_query_interval = clock_t_to_jiffies(val);
1201 }
1202
1203 if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) {
1204 u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]);
1205
1206 br->multicast_query_response_interval = clock_t_to_jiffies(val);
1207 }
1208
1209 if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) {
1210 u64 val = nla_get_u64(data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]);
1211
1212 br->multicast_startup_query_interval = clock_t_to_jiffies(val);
1213 }
1214
1215 if (data[IFLA_BR_MCAST_STATS_ENABLED]) {
1216 __u8 mcast_stats;
1217
1218 mcast_stats = nla_get_u8(data[IFLA_BR_MCAST_STATS_ENABLED]);
1219 br->multicast_stats_enabled = !!mcast_stats;
1220 }
1221
1222 if (data[IFLA_BR_MCAST_IGMP_VERSION]) {
1223 __u8 igmp_version;
1224
1225 igmp_version = nla_get_u8(data[IFLA_BR_MCAST_IGMP_VERSION]);
1226 err = br_multicast_set_igmp_version(br, igmp_version);
1227 if (err)
1228 return err;
1229 }
1230
1231 #if IS_ENABLED(CONFIG_IPV6)
1232 if (data[IFLA_BR_MCAST_MLD_VERSION]) {
1233 __u8 mld_version;
1234
1235 mld_version = nla_get_u8(data[IFLA_BR_MCAST_MLD_VERSION]);
1236 err = br_multicast_set_mld_version(br, mld_version);
1237 if (err)
1238 return err;
1239 }
1240 #endif
1241 #endif
1242 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1243 if (data[IFLA_BR_NF_CALL_IPTABLES]) {
1244 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]);
1245
1246 br->nf_call_iptables = val ? true : false;
1247 }
1248
1249 if (data[IFLA_BR_NF_CALL_IP6TABLES]) {
1250 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]);
1251
1252 br->nf_call_ip6tables = val ? true : false;
1253 }
1254
1255 if (data[IFLA_BR_NF_CALL_ARPTABLES]) {
1256 u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]);
1257
1258 br->nf_call_arptables = val ? true : false;
1259 }
1260 #endif
1261
1262 return 0;
1263 }
1264
1265 static int br_dev_newlink(struct net *src_net, struct net_device *dev,
1266 struct nlattr *tb[], struct nlattr *data[],
1267 struct netlink_ext_ack *extack)
1268 {
1269 struct net_bridge *br = netdev_priv(dev);
1270 int err;
1271
1272 err = register_netdevice(dev);
1273 if (err)
1274 return err;
1275
1276 if (tb[IFLA_ADDRESS]) {
1277 spin_lock_bh(&br->lock);
1278 br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
1279 spin_unlock_bh(&br->lock);
1280 }
1281
1282 err = br_changelink(dev, tb, data, extack);
1283 if (err)
1284 br_dev_delete(dev, NULL);
1285
1286 return err;
1287 }
1288
1289 static size_t br_get_size(const struct net_device *brdev)
1290 {
1291 return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */
1292 nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */
1293 nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */
1294 nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */
1295 nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */
1296 nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */
1297 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */
1298 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1299 nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
1300 nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */
1301 nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_STATS_ENABLED */
1302 #endif
1303 nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */
1304 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */
1305 nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_BRIDGE_ID */
1306 nla_total_size(sizeof(u16)) + /* IFLA_BR_ROOT_PORT */
1307 nla_total_size(sizeof(u32)) + /* IFLA_BR_ROOT_PATH_COST */
1308 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE */
1309 nla_total_size(sizeof(u8)) + /* IFLA_BR_TOPOLOGY_CHANGE_DETECTED */
1310 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_HELLO_TIMER */
1311 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */
1312 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */
1313 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_GC_TIMER */
1314 nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */
1315 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1316 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_ROUTER */
1317 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */
1318 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
1319 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */
1320 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_STATS_ENABLED */
1321 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */
1322 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_MAX */
1323 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_LAST_MEMBER_CNT */
1324 nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_STARTUP_QUERY_CNT */
1325 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_LAST_MEMBER_INTVL */
1326 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_MEMBERSHIP_INTVL */
1327 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERIER_INTVL */
1328 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */
1329 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */
1330 nla_total_size_64bit(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */
1331 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_IGMP_VERSION */
1332 nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_MLD_VERSION */
1333 #endif
1334 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1335 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */
1336 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */
1337 nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */
1338 #endif
1339 0;
1340 }
1341
1342 static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
1343 {
1344 struct net_bridge *br = netdev_priv(brdev);
1345 u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
1346 u32 hello_time = jiffies_to_clock_t(br->hello_time);
1347 u32 age_time = jiffies_to_clock_t(br->max_age);
1348 u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
1349 u32 stp_enabled = br->stp_enabled;
1350 u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
1351 u8 vlan_enabled = br_vlan_enabled(br->dev);
1352 u64 clockval;
1353
1354 clockval = br_timer_value(&br->hello_timer);
1355 if (nla_put_u64_64bit(skb, IFLA_BR_HELLO_TIMER, clockval, IFLA_BR_PAD))
1356 return -EMSGSIZE;
1357 clockval = br_timer_value(&br->tcn_timer);
1358 if (nla_put_u64_64bit(skb, IFLA_BR_TCN_TIMER, clockval, IFLA_BR_PAD))
1359 return -EMSGSIZE;
1360 clockval = br_timer_value(&br->topology_change_timer);
1361 if (nla_put_u64_64bit(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, clockval,
1362 IFLA_BR_PAD))
1363 return -EMSGSIZE;
1364 clockval = br_timer_value(&br->gc_work.timer);
1365 if (nla_put_u64_64bit(skb, IFLA_BR_GC_TIMER, clockval, IFLA_BR_PAD))
1366 return -EMSGSIZE;
1367
1368 if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
1369 nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
1370 nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) ||
1371 nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
1372 nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
1373 nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
1374 nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
1375 nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, br->group_fwd_mask) ||
1376 nla_put(skb, IFLA_BR_BRIDGE_ID, sizeof(struct ifla_bridge_id),
1377 &br->bridge_id) ||
1378 nla_put(skb, IFLA_BR_ROOT_ID, sizeof(struct ifla_bridge_id),
1379 &br->designated_root) ||
1380 nla_put_u16(skb, IFLA_BR_ROOT_PORT, br->root_port) ||
1381 nla_put_u32(skb, IFLA_BR_ROOT_PATH_COST, br->root_path_cost) ||
1382 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE, br->topology_change) ||
1383 nla_put_u8(skb, IFLA_BR_TOPOLOGY_CHANGE_DETECTED,
1384 br->topology_change_detected) ||
1385 nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr))
1386 return -EMSGSIZE;
1387
1388 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1389 if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
1390 nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid) ||
1391 nla_put_u8(skb, IFLA_BR_VLAN_STATS_ENABLED, br->vlan_stats_enabled))
1392 return -EMSGSIZE;
1393 #endif
1394 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1395 if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
1396 nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, !br->multicast_disabled) ||
1397 nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
1398 br->multicast_query_use_ifaddr) ||
1399 nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, br->multicast_querier) ||
1400 nla_put_u8(skb, IFLA_BR_MCAST_STATS_ENABLED,
1401 br->multicast_stats_enabled) ||
1402 nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY,
1403 br->hash_elasticity) ||
1404 nla_put_u32(skb, IFLA_BR_MCAST_HASH_MAX, br->hash_max) ||
1405 nla_put_u32(skb, IFLA_BR_MCAST_LAST_MEMBER_CNT,
1406 br->multicast_last_member_count) ||
1407 nla_put_u32(skb, IFLA_BR_MCAST_STARTUP_QUERY_CNT,
1408 br->multicast_startup_query_count) ||
1409 nla_put_u8(skb, IFLA_BR_MCAST_IGMP_VERSION,
1410 br->multicast_igmp_version))
1411 return -EMSGSIZE;
1412 #if IS_ENABLED(CONFIG_IPV6)
1413 if (nla_put_u8(skb, IFLA_BR_MCAST_MLD_VERSION,
1414 br->multicast_mld_version))
1415 return -EMSGSIZE;
1416 #endif
1417 clockval = jiffies_to_clock_t(br->multicast_last_member_interval);
1418 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_LAST_MEMBER_INTVL, clockval,
1419 IFLA_BR_PAD))
1420 return -EMSGSIZE;
1421 clockval = jiffies_to_clock_t(br->multicast_membership_interval);
1422 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_MEMBERSHIP_INTVL, clockval,
1423 IFLA_BR_PAD))
1424 return -EMSGSIZE;
1425 clockval = jiffies_to_clock_t(br->multicast_querier_interval);
1426 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERIER_INTVL, clockval,
1427 IFLA_BR_PAD))
1428 return -EMSGSIZE;
1429 clockval = jiffies_to_clock_t(br->multicast_query_interval);
1430 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_INTVL, clockval,
1431 IFLA_BR_PAD))
1432 return -EMSGSIZE;
1433 clockval = jiffies_to_clock_t(br->multicast_query_response_interval);
1434 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, clockval,
1435 IFLA_BR_PAD))
1436 return -EMSGSIZE;
1437 clockval = jiffies_to_clock_t(br->multicast_startup_query_interval);
1438 if (nla_put_u64_64bit(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval,
1439 IFLA_BR_PAD))
1440 return -EMSGSIZE;
1441 #endif
1442 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1443 if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES,
1444 br->nf_call_iptables ? 1 : 0) ||
1445 nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES,
1446 br->nf_call_ip6tables ? 1 : 0) ||
1447 nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES,
1448 br->nf_call_arptables ? 1 : 0))
1449 return -EMSGSIZE;
1450 #endif
1451
1452 return 0;
1453 }
1454
1455 static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
1456 {
1457 struct net_bridge_port *p = NULL;
1458 struct net_bridge_vlan_group *vg;
1459 struct net_bridge_vlan *v;
1460 struct net_bridge *br;
1461 int numvls = 0;
1462
1463 switch (attr) {
1464 case IFLA_STATS_LINK_XSTATS:
1465 br = netdev_priv(dev);
1466 vg = br_vlan_group(br);
1467 break;
1468 case IFLA_STATS_LINK_XSTATS_SLAVE:
1469 p = br_port_get_rtnl(dev);
1470 if (!p)
1471 return 0;
1472 br = p->br;
1473 vg = nbp_vlan_group(p);
1474 break;
1475 default:
1476 return 0;
1477 }
1478
1479 if (vg) {
1480 /* we need to count all, even placeholder entries */
1481 list_for_each_entry(v, &vg->vlan_list, vlist)
1482 numvls++;
1483 }
1484
1485 return numvls * nla_total_size(sizeof(struct bridge_vlan_xstats)) +
1486 nla_total_size(sizeof(struct br_mcast_stats)) +
1487 nla_total_size(0);
1488 }
1489
1490 static int br_fill_linkxstats(struct sk_buff *skb,
1491 const struct net_device *dev,
1492 int *prividx, int attr)
1493 {
1494 struct nlattr *nla __maybe_unused;
1495 struct net_bridge_port *p = NULL;
1496 struct net_bridge_vlan_group *vg;
1497 struct net_bridge_vlan *v;
1498 struct net_bridge *br;
1499 struct nlattr *nest;
1500 int vl_idx = 0;
1501
1502 switch (attr) {
1503 case IFLA_STATS_LINK_XSTATS:
1504 br = netdev_priv(dev);
1505 vg = br_vlan_group(br);
1506 break;
1507 case IFLA_STATS_LINK_XSTATS_SLAVE:
1508 p = br_port_get_rtnl(dev);
1509 if (!p)
1510 return 0;
1511 br = p->br;
1512 vg = nbp_vlan_group(p);
1513 break;
1514 default:
1515 return -EINVAL;
1516 }
1517
1518 nest = nla_nest_start(skb, LINK_XSTATS_TYPE_BRIDGE);
1519 if (!nest)
1520 return -EMSGSIZE;
1521
1522 if (vg) {
1523 u16 pvid;
1524
1525 pvid = br_get_pvid(vg);
1526 list_for_each_entry(v, &vg->vlan_list, vlist) {
1527 struct bridge_vlan_xstats vxi;
1528 struct br_vlan_stats stats;
1529
1530 if (++vl_idx < *prividx)
1531 continue;
1532 memset(&vxi, 0, sizeof(vxi));
1533 vxi.vid = v->vid;
1534 vxi.flags = v->flags;
1535 if (v->vid == pvid)
1536 vxi.flags |= BRIDGE_VLAN_INFO_PVID;
1537 br_vlan_get_stats(v, &stats);
1538 vxi.rx_bytes = stats.rx_bytes;
1539 vxi.rx_packets = stats.rx_packets;
1540 vxi.tx_bytes = stats.tx_bytes;
1541 vxi.tx_packets = stats.tx_packets;
1542
1543 if (nla_put(skb, BRIDGE_XSTATS_VLAN, sizeof(vxi), &vxi))
1544 goto nla_put_failure;
1545 }
1546 }
1547
1548 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
1549 if (++vl_idx >= *prividx) {
1550 nla = nla_reserve_64bit(skb, BRIDGE_XSTATS_MCAST,
1551 sizeof(struct br_mcast_stats),
1552 BRIDGE_XSTATS_PAD);
1553 if (!nla)
1554 goto nla_put_failure;
1555 br_multicast_get_stats(br, p, nla_data(nla));
1556 }
1557 #endif
1558 nla_nest_end(skb, nest);
1559 *prividx = 0;
1560
1561 return 0;
1562
1563 nla_put_failure:
1564 nla_nest_end(skb, nest);
1565 *prividx = vl_idx;
1566
1567 return -EMSGSIZE;
1568 }
1569
1570 static struct rtnl_af_ops br_af_ops __read_mostly = {
1571 .family = AF_BRIDGE,
1572 .get_link_af_size = br_get_link_af_size_filtered,
1573 };
1574
1575 struct rtnl_link_ops br_link_ops __read_mostly = {
1576 .kind = "bridge",
1577 .priv_size = sizeof(struct net_bridge),
1578 .setup = br_dev_setup,
1579 .maxtype = IFLA_BR_MAX,
1580 .policy = br_policy,
1581 .validate = br_validate,
1582 .newlink = br_dev_newlink,
1583 .changelink = br_changelink,
1584 .dellink = br_dev_delete,
1585 .get_size = br_get_size,
1586 .fill_info = br_fill_info,
1587 .fill_linkxstats = br_fill_linkxstats,
1588 .get_linkxstats_size = br_get_linkxstats_size,
1589
1590 .slave_maxtype = IFLA_BRPORT_MAX,
1591 .slave_policy = br_port_policy,
1592 .slave_changelink = br_port_slave_changelink,
1593 .get_slave_size = br_port_get_slave_size,
1594 .fill_slave_info = br_port_fill_slave_info,
1595 };
1596
1597 int __init br_netlink_init(void)
1598 {
1599 int err;
1600
1601 br_mdb_init();
1602 rtnl_af_register(&br_af_ops);
1603
1604 err = rtnl_link_register(&br_link_ops);
1605 if (err)
1606 goto out_af;
1607
1608 return 0;
1609
1610 out_af:
1611 rtnl_af_unregister(&br_af_ops);
1612 br_mdb_uninit();
1613 return err;
1614 }
1615
1616 void br_netlink_fini(void)
1617 {
1618 br_mdb_uninit();
1619 rtnl_af_unregister(&br_af_ops);
1620 rtnl_link_unregister(&br_link_ops);
1621 }
Linux with added FPC-III support