Commit | Line | Data |
---|---|---|
11dc1f36 SH |
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> | |
5a0e3ad6 | 14 | #include <linux/slab.h> |
bb900b27 | 15 | #include <linux/etherdevice.h> |
32fe21c0 | 16 | #include <net/rtnetlink.h> |
881d966b | 17 | #include <net/net_namespace.h> |
b854272b | 18 | #include <net/sock.h> |
68e331c7 | 19 | #include <net/switchdev.h> |
407af329 | 20 | #include <uapi/linux/if_bridge.h> |
bb900b27 | 21 | |
11dc1f36 | 22 | #include "br_private.h" |
b03b6dd5 | 23 | #include "br_private_stp.h" |
11dc1f36 | 24 | |
fed0a159 RP |
25 | static int br_get_num_vlan_infos(const struct net_port_vlans *pv, |
26 | u32 filter_mask) | |
27 | { | |
28 | u16 vid_range_start = 0, vid_range_end = 0; | |
29 | u16 vid_range_flags = 0; | |
30 | u16 pvid, vid, flags; | |
31 | int num_vlans = 0; | |
32 | ||
33 | if (filter_mask & RTEXT_FILTER_BRVLAN) | |
34 | return pv->num_vlans; | |
35 | ||
36 | if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) | |
37 | return 0; | |
38 | ||
39 | /* Count number of vlan info's | |
40 | */ | |
41 | pvid = br_get_pvid(pv); | |
42 | for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) { | |
43 | flags = 0; | |
44 | if (vid == pvid) | |
45 | flags |= BRIDGE_VLAN_INFO_PVID; | |
46 | ||
47 | if (test_bit(vid, pv->untagged_bitmap)) | |
48 | flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
49 | ||
50 | if (vid_range_start == 0) { | |
51 | goto initvars; | |
52 | } else if ((vid - vid_range_end) == 1 && | |
53 | flags == vid_range_flags) { | |
54 | vid_range_end = vid; | |
55 | continue; | |
56 | } else { | |
57 | if ((vid_range_end - vid_range_start) > 0) | |
58 | num_vlans += 2; | |
59 | else | |
60 | num_vlans += 1; | |
61 | } | |
62 | initvars: | |
63 | vid_range_start = vid; | |
64 | vid_range_end = vid; | |
65 | vid_range_flags = flags; | |
66 | } | |
67 | ||
68 | if (vid_range_start != 0) { | |
69 | if ((vid_range_end - vid_range_start) > 0) | |
70 | num_vlans += 2; | |
71 | else | |
72 | num_vlans += 1; | |
73 | } | |
74 | ||
75 | return num_vlans; | |
76 | } | |
77 | ||
78 | static size_t br_get_link_af_size_filtered(const struct net_device *dev, | |
79 | u32 filter_mask) | |
b7853d73 RP |
80 | { |
81 | struct net_port_vlans *pv; | |
fed0a159 | 82 | int num_vlan_infos; |
b7853d73 | 83 | |
2f56f6be | 84 | rcu_read_lock(); |
b7853d73 | 85 | if (br_port_exists(dev)) |
2f56f6be | 86 | pv = nbp_get_vlan_info(br_port_get_rcu(dev)); |
b7853d73 RP |
87 | else if (dev->priv_flags & IFF_EBRIDGE) |
88 | pv = br_get_vlan_info((struct net_bridge *)netdev_priv(dev)); | |
89 | else | |
2f56f6be JB |
90 | pv = NULL; |
91 | if (pv) | |
92 | num_vlan_infos = br_get_num_vlan_infos(pv, filter_mask); | |
93 | else | |
94 | num_vlan_infos = 0; | |
95 | rcu_read_unlock(); | |
b7853d73 | 96 | |
fed0a159 RP |
97 | if (!num_vlan_infos) |
98 | return 0; | |
99 | ||
b7853d73 | 100 | /* Each VLAN is returned in bridge_vlan_info along with flags */ |
fed0a159 | 101 | return num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info)); |
b7853d73 RP |
102 | } |
103 | ||
25c71c75 | 104 | static inline size_t br_port_info_size(void) |
105 | { | |
106 | return nla_total_size(1) /* IFLA_BRPORT_STATE */ | |
107 | + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */ | |
108 | + nla_total_size(4) /* IFLA_BRPORT_COST */ | |
109 | + nla_total_size(1) /* IFLA_BRPORT_MODE */ | |
a2e01a65 | 110 | + nla_total_size(1) /* IFLA_BRPORT_GUARD */ |
1007dd1a | 111 | + nla_total_size(1) /* IFLA_BRPORT_PROTECT */ |
3da889b6 | 112 | + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */ |
9ba18891 | 113 | + nla_total_size(1) /* IFLA_BRPORT_LEARNING */ |
867a5943 | 114 | + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */ |
355b9f9d | 115 | + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */ |
786c2077 | 116 | + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */ |
25c71c75 | 117 | + 0; |
118 | } | |
119 | ||
fed0a159 | 120 | static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask) |
339bf98f TG |
121 | { |
122 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
25c71c75 | 123 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ |
124 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
125 | + nla_total_size(4) /* IFLA_MASTER */ | |
126 | + nla_total_size(4) /* IFLA_MTU */ | |
127 | + nla_total_size(4) /* IFLA_LINK */ | |
128 | + nla_total_size(1) /* IFLA_OPERSTATE */ | |
b7853d73 | 129 | + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */ |
fed0a159 RP |
130 | + nla_total_size(br_get_link_af_size_filtered(dev, |
131 | filter_mask)); /* IFLA_AF_SPEC */ | |
25c71c75 | 132 | } |
133 | ||
134 | static int br_port_fill_attrs(struct sk_buff *skb, | |
135 | const struct net_bridge_port *p) | |
136 | { | |
137 | u8 mode = !!(p->flags & BR_HAIRPIN_MODE); | |
138 | ||
139 | if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || | |
140 | nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || | |
141 | nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || | |
a2e01a65 | 142 | nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || |
1007dd1a | 143 | nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || |
c2d3babf | 144 | nla_put_u8(skb, IFLA_BRPORT_PROTECT, !!(p->flags & BR_ROOT_BLOCK)) || |
9ba18891 | 145 | nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || |
867a5943 | 146 | nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || |
95850116 | 147 | nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_FLOOD)) || |
842a9ae0 JM |
148 | nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) || |
149 | nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI, | |
150 | !!(p->flags & BR_PROXYARP_WIFI))) | |
25c71c75 | 151 | return -EMSGSIZE; |
152 | ||
153 | return 0; | |
339bf98f TG |
154 | } |
155 | ||
36cd0ffb RP |
156 | static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, |
157 | u16 vid_end, u16 flags) | |
158 | { | |
159 | struct bridge_vlan_info vinfo; | |
160 | ||
161 | if ((vid_end - vid_start) > 0) { | |
162 | /* add range to skb */ | |
163 | vinfo.vid = vid_start; | |
164 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
165 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
166 | sizeof(vinfo), &vinfo)) | |
167 | goto nla_put_failure; | |
168 | ||
169 | vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
170 | ||
171 | vinfo.vid = vid_end; | |
172 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; | |
173 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
174 | sizeof(vinfo), &vinfo)) | |
175 | goto nla_put_failure; | |
176 | } else { | |
177 | vinfo.vid = vid_start; | |
178 | vinfo.flags = flags; | |
179 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
180 | sizeof(vinfo), &vinfo)) | |
181 | goto nla_put_failure; | |
182 | } | |
183 | ||
184 | return 0; | |
185 | ||
186 | nla_put_failure: | |
187 | return -EMSGSIZE; | |
188 | } | |
189 | ||
190 | static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, | |
191 | const struct net_port_vlans *pv) | |
192 | { | |
193 | u16 vid_range_start = 0, vid_range_end = 0; | |
0fe6de49 | 194 | u16 vid_range_flags = 0; |
36cd0ffb RP |
195 | u16 pvid, vid, flags; |
196 | int err = 0; | |
197 | ||
198 | /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan | |
199 | * and mark vlan info with begin and end flags | |
200 | * if vlaninfo represents a range | |
201 | */ | |
202 | pvid = br_get_pvid(pv); | |
203 | for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) { | |
204 | flags = 0; | |
205 | if (vid == pvid) | |
206 | flags |= BRIDGE_VLAN_INFO_PVID; | |
207 | ||
208 | if (test_bit(vid, pv->untagged_bitmap)) | |
209 | flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
210 | ||
211 | if (vid_range_start == 0) { | |
212 | goto initvars; | |
213 | } else if ((vid - vid_range_end) == 1 && | |
214 | flags == vid_range_flags) { | |
215 | vid_range_end = vid; | |
216 | continue; | |
217 | } else { | |
218 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, | |
219 | vid_range_end, | |
220 | vid_range_flags); | |
221 | if (err) | |
222 | return err; | |
223 | } | |
224 | ||
225 | initvars: | |
226 | vid_range_start = vid; | |
227 | vid_range_end = vid; | |
228 | vid_range_flags = flags; | |
229 | } | |
230 | ||
0fe6de49 RP |
231 | if (vid_range_start != 0) { |
232 | /* Call it once more to send any left over vlans */ | |
233 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, | |
234 | vid_range_end, | |
235 | vid_range_flags); | |
236 | if (err) | |
237 | return err; | |
238 | } | |
36cd0ffb RP |
239 | |
240 | return 0; | |
241 | } | |
242 | ||
243 | static int br_fill_ifvlaninfo(struct sk_buff *skb, | |
244 | const struct net_port_vlans *pv) | |
245 | { | |
246 | struct bridge_vlan_info vinfo; | |
247 | u16 pvid, vid; | |
248 | ||
249 | pvid = br_get_pvid(pv); | |
250 | for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) { | |
251 | vinfo.vid = vid; | |
252 | vinfo.flags = 0; | |
253 | if (vid == pvid) | |
254 | vinfo.flags |= BRIDGE_VLAN_INFO_PVID; | |
255 | ||
256 | if (test_bit(vid, pv->untagged_bitmap)) | |
257 | vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
258 | ||
259 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
260 | sizeof(vinfo), &vinfo)) | |
261 | goto nla_put_failure; | |
262 | } | |
263 | ||
264 | return 0; | |
265 | ||
266 | nla_put_failure: | |
267 | return -EMSGSIZE; | |
268 | } | |
269 | ||
11dc1f36 SH |
270 | /* |
271 | * Create one netlink message for one interface | |
272 | * Contains port and master info as well as carrier and bridge state. | |
273 | */ | |
6cbdceeb VY |
274 | static int br_fill_ifinfo(struct sk_buff *skb, |
275 | const struct net_bridge_port *port, | |
276 | u32 pid, u32 seq, int event, unsigned int flags, | |
277 | u32 filter_mask, const struct net_device *dev) | |
11dc1f36 | 278 | { |
6cbdceeb | 279 | const struct net_bridge *br; |
74685962 | 280 | struct ifinfomsg *hdr; |
11dc1f36 | 281 | struct nlmsghdr *nlh; |
11dc1f36 | 282 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
11dc1f36 | 283 | |
6cbdceeb VY |
284 | if (port) |
285 | br = port->br; | |
286 | else | |
287 | br = netdev_priv(dev); | |
288 | ||
28a16c97 | 289 | br_debug(br, "br_fill_info event %d port %s master %s\n", |
290 | event, dev->name, br->dev->name); | |
11dc1f36 | 291 | |
74685962 TG |
292 | nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); |
293 | if (nlh == NULL) | |
26932566 | 294 | return -EMSGSIZE; |
11dc1f36 | 295 | |
74685962 TG |
296 | hdr = nlmsg_data(nlh); |
297 | hdr->ifi_family = AF_BRIDGE; | |
298 | hdr->__ifi_pad = 0; | |
299 | hdr->ifi_type = dev->type; | |
300 | hdr->ifi_index = dev->ifindex; | |
301 | hdr->ifi_flags = dev_get_flags(dev); | |
302 | hdr->ifi_change = 0; | |
11dc1f36 | 303 | |
2eb812e6 DM |
304 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
305 | nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || | |
306 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
307 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
308 | (dev->addr_len && | |
309 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
a54acb3a ND |
310 | (dev->ifindex != dev_get_iflink(dev) && |
311 | nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) | |
2eb812e6 | 312 | goto nla_put_failure; |
25c71c75 | 313 | |
6cbdceeb | 314 | if (event == RTM_NEWLINK && port) { |
25c71c75 | 315 | struct nlattr *nest |
316 | = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); | |
317 | ||
318 | if (nest == NULL || br_port_fill_attrs(skb, port) < 0) | |
319 | goto nla_put_failure; | |
320 | nla_nest_end(skb, nest); | |
321 | } | |
322 | ||
6cbdceeb | 323 | /* Check if the VID information is requested */ |
36cd0ffb RP |
324 | if ((filter_mask & RTEXT_FILTER_BRVLAN) || |
325 | (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { | |
6cbdceeb | 326 | const struct net_port_vlans *pv; |
36cd0ffb RP |
327 | struct nlattr *af; |
328 | int err; | |
6cbdceeb VY |
329 | |
330 | if (port) | |
331 | pv = nbp_get_vlan_info(port); | |
332 | else | |
333 | pv = br_get_vlan_info(br); | |
334 | ||
ef40b7ef | 335 | if (!pv || bitmap_empty(pv->vlan_bitmap, VLAN_N_VID)) |
6cbdceeb VY |
336 | goto done; |
337 | ||
338 | af = nla_nest_start(skb, IFLA_AF_SPEC); | |
339 | if (!af) | |
340 | goto nla_put_failure; | |
341 | ||
36cd0ffb RP |
342 | if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) |
343 | err = br_fill_ifvlaninfo_compressed(skb, pv); | |
344 | else | |
345 | err = br_fill_ifvlaninfo(skb, pv); | |
346 | if (err) | |
347 | goto nla_put_failure; | |
6cbdceeb VY |
348 | nla_nest_end(skb, af); |
349 | } | |
350 | ||
351 | done: | |
053c095a JB |
352 | nlmsg_end(skb, nlh); |
353 | return 0; | |
11dc1f36 | 354 | |
74685962 | 355 | nla_put_failure: |
26932566 PM |
356 | nlmsg_cancel(skb, nlh); |
357 | return -EMSGSIZE; | |
11dc1f36 SH |
358 | } |
359 | ||
360 | /* | |
361 | * Notify listeners of a change in port information | |
362 | */ | |
363 | void br_ifinfo_notify(int event, struct net_bridge_port *port) | |
364 | { | |
407af329 | 365 | struct net *net; |
11dc1f36 | 366 | struct sk_buff *skb; |
280a306c | 367 | int err = -ENOBUFS; |
fed0a159 | 368 | u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; |
11dc1f36 | 369 | |
407af329 VY |
370 | if (!port) |
371 | return; | |
372 | ||
373 | net = dev_net(port->dev); | |
28a16c97 | 374 | br_debug(port->br, "port %u(%s) event %d\n", |
95c96174 | 375 | (unsigned int)port->port_no, port->dev->name, event); |
28a16c97 | 376 | |
fed0a159 | 377 | skb = nlmsg_new(br_nlmsg_size(port->dev, filter), GFP_ATOMIC); |
280a306c TG |
378 | if (skb == NULL) |
379 | goto errout; | |
380 | ||
fed0a159 | 381 | err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, port->dev); |
26932566 PM |
382 | if (err < 0) { |
383 | /* -EMSGSIZE implies BUG in br_nlmsg_size() */ | |
384 | WARN_ON(err == -EMSGSIZE); | |
385 | kfree_skb(skb); | |
386 | goto errout; | |
387 | } | |
1ce85fe4 PNA |
388 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
389 | return; | |
280a306c | 390 | errout: |
87e823b3 | 391 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
11dc1f36 SH |
392 | } |
393 | ||
407af329 | 394 | |
11dc1f36 SH |
395 | /* |
396 | * Dump information about all ports, in response to GETLINK | |
397 | */ | |
e5a55a89 | 398 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
46c264da | 399 | struct net_device *dev, u32 filter_mask, int nlflags) |
11dc1f36 | 400 | { |
1fb1754a | 401 | struct net_bridge_port *port = br_port_get_rtnl(dev); |
e5a55a89 | 402 | |
36cd0ffb RP |
403 | if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && |
404 | !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) | |
1b846f92 | 405 | return 0; |
11dc1f36 | 406 | |
46c264da | 407 | return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, |
1b846f92 | 408 | filter_mask, dev); |
11dc1f36 SH |
409 | } |
410 | ||
bdced7ef RP |
411 | static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, |
412 | int cmd, struct bridge_vlan_info *vinfo) | |
413 | { | |
414 | int err = 0; | |
415 | ||
416 | switch (cmd) { | |
417 | case RTM_SETLINK: | |
418 | if (p) { | |
419 | err = nbp_vlan_add(p, vinfo->vid, vinfo->flags); | |
420 | if (err) | |
421 | break; | |
422 | ||
423 | if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) | |
424 | err = br_vlan_add(p->br, vinfo->vid, | |
425 | vinfo->flags); | |
426 | } else { | |
427 | err = br_vlan_add(br, vinfo->vid, vinfo->flags); | |
428 | } | |
429 | break; | |
430 | ||
431 | case RTM_DELLINK: | |
432 | if (p) { | |
433 | nbp_vlan_delete(p, vinfo->vid); | |
434 | if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) | |
435 | br_vlan_delete(p->br, vinfo->vid); | |
436 | } else { | |
437 | br_vlan_delete(br, vinfo->vid); | |
438 | } | |
439 | break; | |
440 | } | |
441 | ||
442 | return err; | |
443 | } | |
407af329 VY |
444 | |
445 | static int br_afspec(struct net_bridge *br, | |
446 | struct net_bridge_port *p, | |
447 | struct nlattr *af_spec, | |
448 | int cmd) | |
449 | { | |
bdced7ef RP |
450 | struct bridge_vlan_info *vinfo_start = NULL; |
451 | struct bridge_vlan_info *vinfo = NULL; | |
452 | struct nlattr *attr; | |
407af329 | 453 | int err = 0; |
bdced7ef | 454 | int rem; |
407af329 | 455 | |
bdced7ef RP |
456 | nla_for_each_nested(attr, af_spec, rem) { |
457 | if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO) | |
458 | continue; | |
459 | if (nla_len(attr) != sizeof(struct bridge_vlan_info)) | |
460 | return -EINVAL; | |
461 | vinfo = nla_data(attr); | |
462e1ead NA |
462 | if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK) |
463 | return -EINVAL; | |
bdced7ef RP |
464 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { |
465 | if (vinfo_start) | |
466 | return -EINVAL; | |
467 | vinfo_start = vinfo; | |
468 | continue; | |
469 | } | |
407af329 | 470 | |
bdced7ef RP |
471 | if (vinfo_start) { |
472 | struct bridge_vlan_info tmp_vinfo; | |
473 | int v; | |
407af329 | 474 | |
bdced7ef RP |
475 | if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END)) |
476 | return -EINVAL; | |
407af329 | 477 | |
bdced7ef RP |
478 | if (vinfo->vid <= vinfo_start->vid) |
479 | return -EINVAL; | |
480 | ||
481 | memcpy(&tmp_vinfo, vinfo_start, | |
482 | sizeof(struct bridge_vlan_info)); | |
407af329 | 483 | |
bdced7ef RP |
484 | for (v = vinfo_start->vid; v <= vinfo->vid; v++) { |
485 | tmp_vinfo.vid = v; | |
486 | err = br_vlan_info(br, p, cmd, &tmp_vinfo); | |
407af329 VY |
487 | if (err) |
488 | break; | |
bdced7ef RP |
489 | } |
490 | vinfo_start = NULL; | |
491 | } else { | |
492 | err = br_vlan_info(br, p, cmd, vinfo); | |
407af329 | 493 | } |
bdced7ef RP |
494 | if (err) |
495 | break; | |
407af329 VY |
496 | } |
497 | ||
498 | return err; | |
499 | } | |
500 | ||
3ac636b8 | 501 | static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { |
25c71c75 | 502 | [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, |
503 | [IFLA_BRPORT_COST] = { .type = NLA_U32 }, | |
504 | [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, | |
505 | [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, | |
a2e01a65 | 506 | [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, |
1007dd1a | 507 | [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, |
6f705d8c | 508 | [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, |
9ba18891 | 509 | [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, |
867a5943 | 510 | [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, |
355b9f9d | 511 | [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 }, |
786c2077 | 512 | [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 }, |
25c71c75 | 513 | }; |
514 | ||
515 | /* Change the state of the port and notify spanning tree */ | |
516 | static int br_set_port_state(struct net_bridge_port *p, u8 state) | |
517 | { | |
518 | if (state > BR_STATE_BLOCKING) | |
519 | return -EINVAL; | |
520 | ||
521 | /* if kernel STP is running, don't allow changes */ | |
522 | if (p->br->stp_enabled == BR_KERNEL_STP) | |
523 | return -EBUSY; | |
524 | ||
576eb625 | 525 | /* if device is not up, change is not allowed |
526 | * if link is not present, only allowable state is disabled | |
527 | */ | |
25c71c75 | 528 | if (!netif_running(p->dev) || |
576eb625 | 529 | (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) |
25c71c75 | 530 | return -ENETDOWN; |
531 | ||
775dd692 | 532 | br_set_state(p, state); |
25c71c75 | 533 | br_log_state(p); |
534 | br_port_state_selection(p->br); | |
535 | return 0; | |
536 | } | |
537 | ||
538 | /* Set/clear or port flags based on attribute */ | |
539 | static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], | |
540 | int attrtype, unsigned long mask) | |
541 | { | |
542 | if (tb[attrtype]) { | |
543 | u8 flag = nla_get_u8(tb[attrtype]); | |
544 | if (flag) | |
545 | p->flags |= mask; | |
546 | else | |
547 | p->flags &= ~mask; | |
548 | } | |
549 | } | |
550 | ||
551 | /* Process bridge protocol info on port */ | |
552 | static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) | |
553 | { | |
554 | int err; | |
e028e4b8 | 555 | unsigned long old_flags = p->flags; |
25c71c75 | 556 | |
557 | br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); | |
a2e01a65 | 558 | br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); |
c2d3babf | 559 | br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); |
3d84fa98 | 560 | br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); |
9ba18891 | 561 | br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); |
867a5943 | 562 | br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); |
95850116 | 563 | br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); |
842a9ae0 | 564 | br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); |
25c71c75 | 565 | |
566 | if (tb[IFLA_BRPORT_COST]) { | |
567 | err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); | |
568 | if (err) | |
569 | return err; | |
570 | } | |
571 | ||
572 | if (tb[IFLA_BRPORT_PRIORITY]) { | |
573 | err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); | |
574 | if (err) | |
575 | return err; | |
576 | } | |
577 | ||
578 | if (tb[IFLA_BRPORT_STATE]) { | |
579 | err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); | |
580 | if (err) | |
581 | return err; | |
582 | } | |
e028e4b8 VY |
583 | |
584 | br_port_flags_change(p, old_flags ^ p->flags); | |
25c71c75 | 585 | return 0; |
586 | } | |
587 | ||
588 | /* Change state and parameters on port. */ | |
add511b3 | 589 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) |
11dc1f36 | 590 | { |
74685962 | 591 | struct nlattr *protinfo; |
407af329 | 592 | struct nlattr *afspec; |
11dc1f36 | 593 | struct net_bridge_port *p; |
2062cc20 | 594 | struct nlattr *tb[IFLA_BRPORT_MAX + 1]; |
41c498b9 | 595 | int err = 0; |
11dc1f36 | 596 | |
c60ee67f H |
597 | protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); |
598 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
407af329 | 599 | if (!protinfo && !afspec) |
25c71c75 | 600 | return 0; |
11dc1f36 | 601 | |
ec1e5610 | 602 | p = br_port_get_rtnl(dev); |
407af329 | 603 | /* We want to accept dev as bridge itself if the AF_SPEC |
8e3bff96 | 604 | * is set to see if someone is setting vlan info on the bridge |
407af329 | 605 | */ |
7b99a993 | 606 | if (!p && !afspec) |
b5ed54e9 | 607 | return -EINVAL; |
11dc1f36 | 608 | |
407af329 VY |
609 | if (p && protinfo) { |
610 | if (protinfo->nla_type & NLA_F_NESTED) { | |
611 | err = nla_parse_nested(tb, IFLA_BRPORT_MAX, | |
3ac636b8 | 612 | protinfo, br_port_policy); |
407af329 VY |
613 | if (err) |
614 | return err; | |
615 | ||
616 | spin_lock_bh(&p->br->lock); | |
617 | err = br_setport(p, tb); | |
618 | spin_unlock_bh(&p->br->lock); | |
619 | } else { | |
8e3bff96 | 620 | /* Binary compatibility with old RSTP */ |
407af329 VY |
621 | if (nla_len(protinfo) < sizeof(u8)) |
622 | return -EINVAL; | |
623 | ||
624 | spin_lock_bh(&p->br->lock); | |
625 | err = br_set_port_state(p, nla_get_u8(protinfo)); | |
626 | spin_unlock_bh(&p->br->lock); | |
627 | } | |
25c71c75 | 628 | if (err) |
407af329 VY |
629 | goto out; |
630 | } | |
11dc1f36 | 631 | |
407af329 VY |
632 | if (afspec) { |
633 | err = br_afspec((struct net_bridge *)netdev_priv(dev), p, | |
634 | afspec, RTM_SETLINK); | |
25c71c75 | 635 | } |
b03b6dd5 | 636 | |
25c71c75 | 637 | if (err == 0) |
638 | br_ifinfo_notify(RTM_NEWLINK, p); | |
407af329 | 639 | out: |
25c71c75 | 640 | return err; |
11dc1f36 SH |
641 | } |
642 | ||
407af329 | 643 | /* Delete port information */ |
add511b3 | 644 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) |
407af329 | 645 | { |
407af329 VY |
646 | struct nlattr *afspec; |
647 | struct net_bridge_port *p; | |
8508025c | 648 | int err = 0; |
407af329 | 649 | |
c60ee67f | 650 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
407af329 VY |
651 | if (!afspec) |
652 | return 0; | |
653 | ||
654 | p = br_port_get_rtnl(dev); | |
655 | /* We want to accept dev as bridge itself as well */ | |
656 | if (!p && !(dev->priv_flags & IFF_EBRIDGE)) | |
657 | return -EINVAL; | |
658 | ||
659 | err = br_afspec((struct net_bridge *)netdev_priv(dev), p, | |
660 | afspec, RTM_DELLINK); | |
02dba438 RP |
661 | if (err == 0) |
662 | /* Send RTM_NEWLINK because userspace | |
663 | * expects RTM_NEWLINK for vlan dels | |
664 | */ | |
665 | br_ifinfo_notify(RTM_NEWLINK, p); | |
407af329 VY |
666 | |
667 | return err; | |
668 | } | |
bb900b27 | 669 | static int br_validate(struct nlattr *tb[], struct nlattr *data[]) |
670 | { | |
671 | if (tb[IFLA_ADDRESS]) { | |
672 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
673 | return -EINVAL; | |
674 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
675 | return -EADDRNOTAVAIL; | |
676 | } | |
677 | ||
678 | return 0; | |
679 | } | |
680 | ||
30313a3d TM |
681 | static int br_dev_newlink(struct net *src_net, struct net_device *dev, |
682 | struct nlattr *tb[], struct nlattr *data[]) | |
683 | { | |
684 | struct net_bridge *br = netdev_priv(dev); | |
685 | ||
686 | if (tb[IFLA_ADDRESS]) { | |
687 | spin_lock_bh(&br->lock); | |
688 | br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); | |
689 | spin_unlock_bh(&br->lock); | |
690 | } | |
691 | ||
692 | return register_netdevice(dev); | |
693 | } | |
694 | ||
3ac636b8 JP |
695 | static int br_port_slave_changelink(struct net_device *brdev, |
696 | struct net_device *dev, | |
697 | struct nlattr *tb[], | |
698 | struct nlattr *data[]) | |
699 | { | |
963ad948 NA |
700 | struct net_bridge *br = netdev_priv(brdev); |
701 | int ret; | |
702 | ||
3ac636b8 JP |
703 | if (!data) |
704 | return 0; | |
963ad948 NA |
705 | |
706 | spin_lock_bh(&br->lock); | |
707 | ret = br_setport(br_port_get_rtnl(dev), data); | |
708 | spin_unlock_bh(&br->lock); | |
709 | ||
710 | return ret; | |
3ac636b8 JP |
711 | } |
712 | ||
ced8283f JP |
713 | static int br_port_fill_slave_info(struct sk_buff *skb, |
714 | const struct net_device *brdev, | |
715 | const struct net_device *dev) | |
716 | { | |
717 | return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); | |
718 | } | |
719 | ||
720 | static size_t br_port_get_slave_size(const struct net_device *brdev, | |
721 | const struct net_device *dev) | |
722 | { | |
723 | return br_port_info_size(); | |
724 | } | |
725 | ||
13323516 JP |
726 | static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { |
727 | [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, | |
728 | [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, | |
729 | [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, | |
af615762 JT |
730 | [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, |
731 | [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, | |
732 | [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, | |
13323516 JP |
733 | }; |
734 | ||
735 | static int br_changelink(struct net_device *brdev, struct nlattr *tb[], | |
736 | struct nlattr *data[]) | |
737 | { | |
738 | struct net_bridge *br = netdev_priv(brdev); | |
739 | int err; | |
740 | ||
741 | if (!data) | |
742 | return 0; | |
743 | ||
744 | if (data[IFLA_BR_FORWARD_DELAY]) { | |
745 | err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); | |
746 | if (err) | |
747 | return err; | |
748 | } | |
749 | ||
750 | if (data[IFLA_BR_HELLO_TIME]) { | |
751 | err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); | |
752 | if (err) | |
753 | return err; | |
754 | } | |
755 | ||
756 | if (data[IFLA_BR_MAX_AGE]) { | |
757 | err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); | |
758 | if (err) | |
759 | return err; | |
760 | } | |
761 | ||
af615762 JT |
762 | if (data[IFLA_BR_AGEING_TIME]) { |
763 | u32 ageing_time = nla_get_u32(data[IFLA_BR_AGEING_TIME]); | |
764 | ||
765 | br->ageing_time = clock_t_to_jiffies(ageing_time); | |
766 | } | |
767 | ||
768 | if (data[IFLA_BR_STP_STATE]) { | |
769 | u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); | |
770 | ||
771 | br_stp_set_enabled(br, stp_enabled); | |
772 | } | |
773 | ||
774 | if (data[IFLA_BR_PRIORITY]) { | |
775 | u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); | |
776 | ||
777 | br_stp_set_bridge_priority(br, priority); | |
778 | } | |
779 | ||
13323516 JP |
780 | return 0; |
781 | } | |
782 | ||
e5c3ea5c JP |
783 | static size_t br_get_size(const struct net_device *brdev) |
784 | { | |
785 | return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ | |
786 | nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ | |
787 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ | |
af615762 JT |
788 | nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ |
789 | nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ | |
790 | nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ | |
e5c3ea5c JP |
791 | 0; |
792 | } | |
793 | ||
794 | static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) | |
795 | { | |
796 | struct net_bridge *br = netdev_priv(brdev); | |
797 | u32 forward_delay = jiffies_to_clock_t(br->forward_delay); | |
798 | u32 hello_time = jiffies_to_clock_t(br->hello_time); | |
799 | u32 age_time = jiffies_to_clock_t(br->max_age); | |
af615762 JT |
800 | u32 ageing_time = jiffies_to_clock_t(br->ageing_time); |
801 | u32 stp_enabled = br->stp_enabled; | |
802 | u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; | |
e5c3ea5c JP |
803 | |
804 | if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || | |
805 | nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || | |
af615762 JT |
806 | nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || |
807 | nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || | |
808 | nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || | |
809 | nla_put_u16(skb, IFLA_BR_PRIORITY, priority)) | |
e5c3ea5c JP |
810 | return -EMSGSIZE; |
811 | ||
812 | return 0; | |
813 | } | |
814 | ||
fed0a159 RP |
815 | static size_t br_get_link_af_size(const struct net_device *dev) |
816 | { | |
817 | struct net_port_vlans *pv; | |
818 | ||
819 | if (br_port_exists(dev)) | |
820 | pv = nbp_get_vlan_info(br_port_get_rtnl(dev)); | |
821 | else if (dev->priv_flags & IFF_EBRIDGE) | |
822 | pv = br_get_vlan_info((struct net_bridge *)netdev_priv(dev)); | |
823 | else | |
824 | return 0; | |
825 | ||
826 | if (!pv) | |
827 | return 0; | |
828 | ||
829 | /* Each VLAN is returned in bridge_vlan_info along with flags */ | |
830 | return pv->num_vlans * nla_total_size(sizeof(struct bridge_vlan_info)); | |
831 | } | |
832 | ||
207895fd | 833 | static struct rtnl_af_ops br_af_ops __read_mostly = { |
6cbdceeb VY |
834 | .family = AF_BRIDGE, |
835 | .get_link_af_size = br_get_link_af_size, | |
836 | }; | |
837 | ||
149ddd83 | 838 | struct rtnl_link_ops br_link_ops __read_mostly = { |
ced8283f JP |
839 | .kind = "bridge", |
840 | .priv_size = sizeof(struct net_bridge), | |
841 | .setup = br_dev_setup, | |
13323516 JP |
842 | .maxtype = IFLA_BRPORT_MAX, |
843 | .policy = br_policy, | |
ced8283f JP |
844 | .validate = br_validate, |
845 | .newlink = br_dev_newlink, | |
13323516 | 846 | .changelink = br_changelink, |
ced8283f | 847 | .dellink = br_dev_delete, |
e5c3ea5c JP |
848 | .get_size = br_get_size, |
849 | .fill_info = br_fill_info, | |
3ac636b8 JP |
850 | |
851 | .slave_maxtype = IFLA_BRPORT_MAX, | |
852 | .slave_policy = br_port_policy, | |
853 | .slave_changelink = br_port_slave_changelink, | |
ced8283f JP |
854 | .get_slave_size = br_port_get_slave_size, |
855 | .fill_slave_info = br_port_fill_slave_info, | |
bb900b27 | 856 | }; |
11dc1f36 | 857 | |
32fe21c0 | 858 | int __init br_netlink_init(void) |
11dc1f36 | 859 | { |
3ec8e9f0 VY |
860 | int err; |
861 | ||
862 | br_mdb_init(); | |
3678a9d8 | 863 | rtnl_af_register(&br_af_ops); |
3ec8e9f0 | 864 | |
6cbdceeb VY |
865 | err = rtnl_link_register(&br_link_ops); |
866 | if (err) | |
867 | goto out_af; | |
868 | ||
3ec8e9f0 | 869 | return 0; |
6cbdceeb VY |
870 | |
871 | out_af: | |
872 | rtnl_af_unregister(&br_af_ops); | |
3ec8e9f0 VY |
873 | br_mdb_uninit(); |
874 | return err; | |
11dc1f36 SH |
875 | } |
876 | ||
34666d46 | 877 | void br_netlink_fini(void) |
11dc1f36 | 878 | { |
3ec8e9f0 | 879 | br_mdb_uninit(); |
6cbdceeb | 880 | rtnl_af_unregister(&br_af_ops); |
bb900b27 | 881 | rtnl_link_unregister(&br_link_ops); |
11dc1f36 | 882 | } |