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> |
407af329 | 19 | #include <uapi/linux/if_bridge.h> |
bb900b27 | 20 | |
11dc1f36 | 21 | #include "br_private.h" |
b03b6dd5 | 22 | #include "br_private_stp.h" |
11dc1f36 | 23 | |
fed0a159 RP |
24 | static int br_get_num_vlan_infos(const struct net_port_vlans *pv, |
25 | u32 filter_mask) | |
26 | { | |
27 | u16 vid_range_start = 0, vid_range_end = 0; | |
28 | u16 vid_range_flags = 0; | |
29 | u16 pvid, vid, flags; | |
30 | int num_vlans = 0; | |
31 | ||
32 | if (filter_mask & RTEXT_FILTER_BRVLAN) | |
33 | return pv->num_vlans; | |
34 | ||
35 | if (!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) | |
36 | return 0; | |
37 | ||
38 | /* Count number of vlan info's | |
39 | */ | |
40 | pvid = br_get_pvid(pv); | |
41 | for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) { | |
42 | flags = 0; | |
43 | if (vid == pvid) | |
44 | flags |= BRIDGE_VLAN_INFO_PVID; | |
45 | ||
46 | if (test_bit(vid, pv->untagged_bitmap)) | |
47 | flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
48 | ||
49 | if (vid_range_start == 0) { | |
50 | goto initvars; | |
51 | } else if ((vid - vid_range_end) == 1 && | |
52 | flags == vid_range_flags) { | |
53 | vid_range_end = 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 = vid; | |
63 | vid_range_end = 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 size_t br_get_link_af_size_filtered(const struct net_device *dev, | |
78 | u32 filter_mask) | |
b7853d73 RP |
79 | { |
80 | struct net_port_vlans *pv; | |
fed0a159 | 81 | int num_vlan_infos; |
b7853d73 | 82 | |
2f56f6be | 83 | rcu_read_lock(); |
b7853d73 | 84 | if (br_port_exists(dev)) |
2f56f6be | 85 | pv = nbp_get_vlan_info(br_port_get_rcu(dev)); |
b7853d73 RP |
86 | else if (dev->priv_flags & IFF_EBRIDGE) |
87 | pv = br_get_vlan_info((struct net_bridge *)netdev_priv(dev)); | |
88 | else | |
2f56f6be JB |
89 | pv = NULL; |
90 | if (pv) | |
91 | num_vlan_infos = br_get_num_vlan_infos(pv, filter_mask); | |
92 | else | |
93 | num_vlan_infos = 0; | |
94 | rcu_read_unlock(); | |
b7853d73 | 95 | |
fed0a159 RP |
96 | if (!num_vlan_infos) |
97 | return 0; | |
98 | ||
b7853d73 | 99 | /* Each VLAN is returned in bridge_vlan_info along with flags */ |
fed0a159 | 100 | return num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info)); |
b7853d73 RP |
101 | } |
102 | ||
25c71c75 | 103 | static inline size_t br_port_info_size(void) |
104 | { | |
105 | return nla_total_size(1) /* IFLA_BRPORT_STATE */ | |
106 | + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */ | |
107 | + nla_total_size(4) /* IFLA_BRPORT_COST */ | |
108 | + nla_total_size(1) /* IFLA_BRPORT_MODE */ | |
a2e01a65 | 109 | + nla_total_size(1) /* IFLA_BRPORT_GUARD */ |
1007dd1a | 110 | + nla_total_size(1) /* IFLA_BRPORT_PROTECT */ |
3da889b6 | 111 | + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */ |
9ba18891 | 112 | + nla_total_size(1) /* IFLA_BRPORT_LEARNING */ |
867a5943 | 113 | + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */ |
355b9f9d | 114 | + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */ |
786c2077 | 115 | + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */ |
25c71c75 | 116 | + 0; |
117 | } | |
118 | ||
fed0a159 | 119 | static inline size_t br_nlmsg_size(struct net_device *dev, u32 filter_mask) |
339bf98f TG |
120 | { |
121 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
25c71c75 | 122 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ |
123 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
124 | + nla_total_size(4) /* IFLA_MASTER */ | |
125 | + nla_total_size(4) /* IFLA_MTU */ | |
126 | + nla_total_size(4) /* IFLA_LINK */ | |
127 | + nla_total_size(1) /* IFLA_OPERSTATE */ | |
b7853d73 | 128 | + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */ |
fed0a159 RP |
129 | + nla_total_size(br_get_link_af_size_filtered(dev, |
130 | filter_mask)); /* IFLA_AF_SPEC */ | |
25c71c75 | 131 | } |
132 | ||
133 | static int br_port_fill_attrs(struct sk_buff *skb, | |
134 | const struct net_bridge_port *p) | |
135 | { | |
136 | u8 mode = !!(p->flags & BR_HAIRPIN_MODE); | |
137 | ||
138 | if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || | |
139 | nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || | |
140 | nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || | |
a2e01a65 | 141 | nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || |
1007dd1a | 142 | nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || |
c2d3babf | 143 | nla_put_u8(skb, IFLA_BRPORT_PROTECT, !!(p->flags & BR_ROOT_BLOCK)) || |
9ba18891 | 144 | nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || |
867a5943 | 145 | nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || |
95850116 | 146 | nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_FLOOD)) || |
842a9ae0 JM |
147 | nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)) || |
148 | nla_put_u8(skb, IFLA_BRPORT_PROXYARP_WIFI, | |
149 | !!(p->flags & BR_PROXYARP_WIFI))) | |
25c71c75 | 150 | return -EMSGSIZE; |
151 | ||
152 | return 0; | |
339bf98f TG |
153 | } |
154 | ||
36cd0ffb RP |
155 | static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, |
156 | u16 vid_end, u16 flags) | |
157 | { | |
158 | struct bridge_vlan_info vinfo; | |
159 | ||
160 | if ((vid_end - vid_start) > 0) { | |
161 | /* add range to skb */ | |
162 | vinfo.vid = vid_start; | |
163 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
164 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
165 | sizeof(vinfo), &vinfo)) | |
166 | goto nla_put_failure; | |
167 | ||
36cd0ffb RP |
168 | vinfo.vid = vid_end; |
169 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; | |
170 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
171 | sizeof(vinfo), &vinfo)) | |
172 | goto nla_put_failure; | |
173 | } else { | |
174 | vinfo.vid = vid_start; | |
175 | vinfo.flags = flags; | |
176 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
177 | sizeof(vinfo), &vinfo)) | |
178 | goto nla_put_failure; | |
179 | } | |
180 | ||
181 | return 0; | |
182 | ||
183 | nla_put_failure: | |
184 | return -EMSGSIZE; | |
185 | } | |
186 | ||
187 | static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, | |
188 | const struct net_port_vlans *pv) | |
189 | { | |
190 | u16 vid_range_start = 0, vid_range_end = 0; | |
0fe6de49 | 191 | u16 vid_range_flags = 0; |
36cd0ffb RP |
192 | u16 pvid, vid, flags; |
193 | int err = 0; | |
194 | ||
195 | /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan | |
196 | * and mark vlan info with begin and end flags | |
197 | * if vlaninfo represents a range | |
198 | */ | |
199 | pvid = br_get_pvid(pv); | |
200 | for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) { | |
201 | flags = 0; | |
202 | if (vid == pvid) | |
203 | flags |= BRIDGE_VLAN_INFO_PVID; | |
204 | ||
205 | if (test_bit(vid, pv->untagged_bitmap)) | |
206 | flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
207 | ||
208 | if (vid_range_start == 0) { | |
209 | goto initvars; | |
210 | } else if ((vid - vid_range_end) == 1 && | |
211 | flags == vid_range_flags) { | |
212 | vid_range_end = vid; | |
213 | continue; | |
214 | } else { | |
215 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, | |
216 | vid_range_end, | |
217 | vid_range_flags); | |
218 | if (err) | |
219 | return err; | |
220 | } | |
221 | ||
222 | initvars: | |
223 | vid_range_start = vid; | |
224 | vid_range_end = vid; | |
225 | vid_range_flags = flags; | |
226 | } | |
227 | ||
0fe6de49 RP |
228 | if (vid_range_start != 0) { |
229 | /* Call it once more to send any left over vlans */ | |
230 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, | |
231 | vid_range_end, | |
232 | vid_range_flags); | |
233 | if (err) | |
234 | return err; | |
235 | } | |
36cd0ffb RP |
236 | |
237 | return 0; | |
238 | } | |
239 | ||
240 | static int br_fill_ifvlaninfo(struct sk_buff *skb, | |
241 | const struct net_port_vlans *pv) | |
242 | { | |
243 | struct bridge_vlan_info vinfo; | |
244 | u16 pvid, vid; | |
245 | ||
246 | pvid = br_get_pvid(pv); | |
247 | for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) { | |
248 | vinfo.vid = vid; | |
249 | vinfo.flags = 0; | |
250 | if (vid == pvid) | |
251 | vinfo.flags |= BRIDGE_VLAN_INFO_PVID; | |
252 | ||
253 | if (test_bit(vid, pv->untagged_bitmap)) | |
254 | vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
255 | ||
256 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
257 | sizeof(vinfo), &vinfo)) | |
258 | goto nla_put_failure; | |
259 | } | |
260 | ||
261 | return 0; | |
262 | ||
263 | nla_put_failure: | |
264 | return -EMSGSIZE; | |
265 | } | |
266 | ||
11dc1f36 SH |
267 | /* |
268 | * Create one netlink message for one interface | |
269 | * Contains port and master info as well as carrier and bridge state. | |
270 | */ | |
6cbdceeb VY |
271 | static int br_fill_ifinfo(struct sk_buff *skb, |
272 | const struct net_bridge_port *port, | |
273 | u32 pid, u32 seq, int event, unsigned int flags, | |
274 | u32 filter_mask, const struct net_device *dev) | |
11dc1f36 | 275 | { |
6cbdceeb | 276 | const struct net_bridge *br; |
74685962 | 277 | struct ifinfomsg *hdr; |
11dc1f36 | 278 | struct nlmsghdr *nlh; |
11dc1f36 | 279 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
11dc1f36 | 280 | |
6cbdceeb VY |
281 | if (port) |
282 | br = port->br; | |
283 | else | |
284 | br = netdev_priv(dev); | |
285 | ||
28a16c97 | 286 | br_debug(br, "br_fill_info event %d port %s master %s\n", |
287 | event, dev->name, br->dev->name); | |
11dc1f36 | 288 | |
74685962 TG |
289 | nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); |
290 | if (nlh == NULL) | |
26932566 | 291 | return -EMSGSIZE; |
11dc1f36 | 292 | |
74685962 TG |
293 | hdr = nlmsg_data(nlh); |
294 | hdr->ifi_family = AF_BRIDGE; | |
295 | hdr->__ifi_pad = 0; | |
296 | hdr->ifi_type = dev->type; | |
297 | hdr->ifi_index = dev->ifindex; | |
298 | hdr->ifi_flags = dev_get_flags(dev); | |
299 | hdr->ifi_change = 0; | |
11dc1f36 | 300 | |
2eb812e6 DM |
301 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
302 | nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || | |
303 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
304 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
305 | (dev->addr_len && | |
306 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
a54acb3a ND |
307 | (dev->ifindex != dev_get_iflink(dev) && |
308 | nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) | |
2eb812e6 | 309 | goto nla_put_failure; |
25c71c75 | 310 | |
6cbdceeb | 311 | if (event == RTM_NEWLINK && port) { |
25c71c75 | 312 | struct nlattr *nest |
313 | = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); | |
314 | ||
315 | if (nest == NULL || br_port_fill_attrs(skb, port) < 0) | |
316 | goto nla_put_failure; | |
317 | nla_nest_end(skb, nest); | |
318 | } | |
319 | ||
6cbdceeb | 320 | /* Check if the VID information is requested */ |
36cd0ffb RP |
321 | if ((filter_mask & RTEXT_FILTER_BRVLAN) || |
322 | (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { | |
6cbdceeb | 323 | const struct net_port_vlans *pv; |
36cd0ffb RP |
324 | struct nlattr *af; |
325 | int err; | |
6cbdceeb VY |
326 | |
327 | if (port) | |
328 | pv = nbp_get_vlan_info(port); | |
329 | else | |
330 | pv = br_get_vlan_info(br); | |
331 | ||
ef40b7ef | 332 | if (!pv || bitmap_empty(pv->vlan_bitmap, VLAN_N_VID)) |
6cbdceeb VY |
333 | goto done; |
334 | ||
335 | af = nla_nest_start(skb, IFLA_AF_SPEC); | |
336 | if (!af) | |
337 | goto nla_put_failure; | |
338 | ||
36cd0ffb RP |
339 | if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) |
340 | err = br_fill_ifvlaninfo_compressed(skb, pv); | |
341 | else | |
342 | err = br_fill_ifvlaninfo(skb, pv); | |
343 | if (err) | |
344 | goto nla_put_failure; | |
6cbdceeb VY |
345 | nla_nest_end(skb, af); |
346 | } | |
347 | ||
348 | done: | |
053c095a JB |
349 | nlmsg_end(skb, nlh); |
350 | return 0; | |
11dc1f36 | 351 | |
74685962 | 352 | nla_put_failure: |
26932566 PM |
353 | nlmsg_cancel(skb, nlh); |
354 | return -EMSGSIZE; | |
11dc1f36 SH |
355 | } |
356 | ||
357 | /* | |
358 | * Notify listeners of a change in port information | |
359 | */ | |
360 | void br_ifinfo_notify(int event, struct net_bridge_port *port) | |
361 | { | |
407af329 | 362 | struct net *net; |
11dc1f36 | 363 | struct sk_buff *skb; |
280a306c | 364 | int err = -ENOBUFS; |
fed0a159 | 365 | u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; |
11dc1f36 | 366 | |
407af329 VY |
367 | if (!port) |
368 | return; | |
369 | ||
370 | net = dev_net(port->dev); | |
28a16c97 | 371 | br_debug(port->br, "port %u(%s) event %d\n", |
95c96174 | 372 | (unsigned int)port->port_no, port->dev->name, event); |
28a16c97 | 373 | |
fed0a159 | 374 | skb = nlmsg_new(br_nlmsg_size(port->dev, filter), GFP_ATOMIC); |
280a306c TG |
375 | if (skb == NULL) |
376 | goto errout; | |
377 | ||
fed0a159 | 378 | err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, port->dev); |
26932566 PM |
379 | if (err < 0) { |
380 | /* -EMSGSIZE implies BUG in br_nlmsg_size() */ | |
381 | WARN_ON(err == -EMSGSIZE); | |
382 | kfree_skb(skb); | |
383 | goto errout; | |
384 | } | |
1ce85fe4 PNA |
385 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
386 | return; | |
280a306c | 387 | errout: |
87e823b3 | 388 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
11dc1f36 SH |
389 | } |
390 | ||
407af329 | 391 | |
11dc1f36 SH |
392 | /* |
393 | * Dump information about all ports, in response to GETLINK | |
394 | */ | |
e5a55a89 | 395 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
46c264da | 396 | struct net_device *dev, u32 filter_mask, int nlflags) |
11dc1f36 | 397 | { |
1fb1754a | 398 | struct net_bridge_port *port = br_port_get_rtnl(dev); |
e5a55a89 | 399 | |
36cd0ffb RP |
400 | if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && |
401 | !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) | |
1b846f92 | 402 | return 0; |
11dc1f36 | 403 | |
46c264da | 404 | return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, |
1b846f92 | 405 | filter_mask, dev); |
11dc1f36 SH |
406 | } |
407 | ||
bdced7ef RP |
408 | static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, |
409 | int cmd, struct bridge_vlan_info *vinfo) | |
410 | { | |
411 | int err = 0; | |
412 | ||
413 | switch (cmd) { | |
414 | case RTM_SETLINK: | |
415 | if (p) { | |
416 | err = nbp_vlan_add(p, vinfo->vid, vinfo->flags); | |
417 | if (err) | |
418 | break; | |
419 | ||
420 | if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) | |
421 | err = br_vlan_add(p->br, vinfo->vid, | |
422 | vinfo->flags); | |
423 | } else { | |
424 | err = br_vlan_add(br, vinfo->vid, vinfo->flags); | |
425 | } | |
426 | break; | |
427 | ||
428 | case RTM_DELLINK: | |
429 | if (p) { | |
430 | nbp_vlan_delete(p, vinfo->vid); | |
431 | if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) | |
432 | br_vlan_delete(p->br, vinfo->vid); | |
433 | } else { | |
434 | br_vlan_delete(br, vinfo->vid); | |
435 | } | |
436 | break; | |
437 | } | |
438 | ||
439 | return err; | |
440 | } | |
407af329 VY |
441 | |
442 | static int br_afspec(struct net_bridge *br, | |
443 | struct net_bridge_port *p, | |
444 | struct nlattr *af_spec, | |
445 | int cmd) | |
446 | { | |
bdced7ef RP |
447 | struct bridge_vlan_info *vinfo_start = NULL; |
448 | struct bridge_vlan_info *vinfo = NULL; | |
449 | struct nlattr *attr; | |
407af329 | 450 | int err = 0; |
bdced7ef | 451 | int rem; |
407af329 | 452 | |
bdced7ef RP |
453 | nla_for_each_nested(attr, af_spec, rem) { |
454 | if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO) | |
455 | continue; | |
456 | if (nla_len(attr) != sizeof(struct bridge_vlan_info)) | |
457 | return -EINVAL; | |
458 | vinfo = nla_data(attr); | |
462e1ead NA |
459 | if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK) |
460 | return -EINVAL; | |
bdced7ef RP |
461 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { |
462 | if (vinfo_start) | |
463 | return -EINVAL; | |
464 | vinfo_start = vinfo; | |
465 | continue; | |
466 | } | |
407af329 | 467 | |
bdced7ef RP |
468 | if (vinfo_start) { |
469 | struct bridge_vlan_info tmp_vinfo; | |
470 | int v; | |
407af329 | 471 | |
bdced7ef RP |
472 | if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END)) |
473 | return -EINVAL; | |
407af329 | 474 | |
bdced7ef RP |
475 | if (vinfo->vid <= vinfo_start->vid) |
476 | return -EINVAL; | |
477 | ||
478 | memcpy(&tmp_vinfo, vinfo_start, | |
479 | sizeof(struct bridge_vlan_info)); | |
407af329 | 480 | |
bdced7ef RP |
481 | for (v = vinfo_start->vid; v <= vinfo->vid; v++) { |
482 | tmp_vinfo.vid = v; | |
483 | err = br_vlan_info(br, p, cmd, &tmp_vinfo); | |
407af329 VY |
484 | if (err) |
485 | break; | |
bdced7ef RP |
486 | } |
487 | vinfo_start = NULL; | |
488 | } else { | |
489 | err = br_vlan_info(br, p, cmd, vinfo); | |
407af329 | 490 | } |
bdced7ef RP |
491 | if (err) |
492 | break; | |
407af329 VY |
493 | } |
494 | ||
495 | return err; | |
496 | } | |
497 | ||
3ac636b8 | 498 | static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { |
25c71c75 | 499 | [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, |
500 | [IFLA_BRPORT_COST] = { .type = NLA_U32 }, | |
501 | [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, | |
502 | [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, | |
a2e01a65 | 503 | [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, |
1007dd1a | 504 | [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, |
6f705d8c | 505 | [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, |
9ba18891 | 506 | [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, |
867a5943 | 507 | [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, |
355b9f9d | 508 | [IFLA_BRPORT_PROXYARP] = { .type = NLA_U8 }, |
786c2077 | 509 | [IFLA_BRPORT_PROXYARP_WIFI] = { .type = NLA_U8 }, |
25c71c75 | 510 | }; |
511 | ||
512 | /* Change the state of the port and notify spanning tree */ | |
513 | static int br_set_port_state(struct net_bridge_port *p, u8 state) | |
514 | { | |
515 | if (state > BR_STATE_BLOCKING) | |
516 | return -EINVAL; | |
517 | ||
518 | /* if kernel STP is running, don't allow changes */ | |
519 | if (p->br->stp_enabled == BR_KERNEL_STP) | |
520 | return -EBUSY; | |
521 | ||
576eb625 | 522 | /* if device is not up, change is not allowed |
523 | * if link is not present, only allowable state is disabled | |
524 | */ | |
25c71c75 | 525 | if (!netif_running(p->dev) || |
576eb625 | 526 | (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) |
25c71c75 | 527 | return -ENETDOWN; |
528 | ||
775dd692 | 529 | br_set_state(p, state); |
25c71c75 | 530 | br_log_state(p); |
531 | br_port_state_selection(p->br); | |
532 | return 0; | |
533 | } | |
534 | ||
535 | /* Set/clear or port flags based on attribute */ | |
536 | static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], | |
537 | int attrtype, unsigned long mask) | |
538 | { | |
539 | if (tb[attrtype]) { | |
540 | u8 flag = nla_get_u8(tb[attrtype]); | |
541 | if (flag) | |
542 | p->flags |= mask; | |
543 | else | |
544 | p->flags &= ~mask; | |
545 | } | |
546 | } | |
547 | ||
548 | /* Process bridge protocol info on port */ | |
549 | static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) | |
550 | { | |
551 | int err; | |
e028e4b8 | 552 | unsigned long old_flags = p->flags; |
25c71c75 | 553 | |
554 | br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); | |
a2e01a65 | 555 | br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); |
c2d3babf | 556 | br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); |
3d84fa98 | 557 | br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); |
9ba18891 | 558 | br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); |
867a5943 | 559 | br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); |
95850116 | 560 | br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); |
842a9ae0 | 561 | br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); |
25c71c75 | 562 | |
563 | if (tb[IFLA_BRPORT_COST]) { | |
564 | err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); | |
565 | if (err) | |
566 | return err; | |
567 | } | |
568 | ||
569 | if (tb[IFLA_BRPORT_PRIORITY]) { | |
570 | err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); | |
571 | if (err) | |
572 | return err; | |
573 | } | |
574 | ||
575 | if (tb[IFLA_BRPORT_STATE]) { | |
576 | err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); | |
577 | if (err) | |
578 | return err; | |
579 | } | |
e028e4b8 VY |
580 | |
581 | br_port_flags_change(p, old_flags ^ p->flags); | |
25c71c75 | 582 | return 0; |
583 | } | |
584 | ||
585 | /* Change state and parameters on port. */ | |
add511b3 | 586 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) |
11dc1f36 | 587 | { |
74685962 | 588 | struct nlattr *protinfo; |
407af329 | 589 | struct nlattr *afspec; |
11dc1f36 | 590 | struct net_bridge_port *p; |
2062cc20 | 591 | struct nlattr *tb[IFLA_BRPORT_MAX + 1]; |
41c498b9 | 592 | int err = 0; |
11dc1f36 | 593 | |
c60ee67f H |
594 | protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); |
595 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
407af329 | 596 | if (!protinfo && !afspec) |
25c71c75 | 597 | return 0; |
11dc1f36 | 598 | |
ec1e5610 | 599 | p = br_port_get_rtnl(dev); |
407af329 | 600 | /* We want to accept dev as bridge itself if the AF_SPEC |
8e3bff96 | 601 | * is set to see if someone is setting vlan info on the bridge |
407af329 | 602 | */ |
7b99a993 | 603 | if (!p && !afspec) |
b5ed54e9 | 604 | return -EINVAL; |
11dc1f36 | 605 | |
407af329 VY |
606 | if (p && protinfo) { |
607 | if (protinfo->nla_type & NLA_F_NESTED) { | |
608 | err = nla_parse_nested(tb, IFLA_BRPORT_MAX, | |
3ac636b8 | 609 | protinfo, br_port_policy); |
407af329 VY |
610 | if (err) |
611 | return err; | |
612 | ||
613 | spin_lock_bh(&p->br->lock); | |
614 | err = br_setport(p, tb); | |
615 | spin_unlock_bh(&p->br->lock); | |
616 | } else { | |
8e3bff96 | 617 | /* Binary compatibility with old RSTP */ |
407af329 VY |
618 | if (nla_len(protinfo) < sizeof(u8)) |
619 | return -EINVAL; | |
620 | ||
621 | spin_lock_bh(&p->br->lock); | |
622 | err = br_set_port_state(p, nla_get_u8(protinfo)); | |
623 | spin_unlock_bh(&p->br->lock); | |
624 | } | |
25c71c75 | 625 | if (err) |
407af329 VY |
626 | goto out; |
627 | } | |
11dc1f36 | 628 | |
407af329 VY |
629 | if (afspec) { |
630 | err = br_afspec((struct net_bridge *)netdev_priv(dev), p, | |
631 | afspec, RTM_SETLINK); | |
25c71c75 | 632 | } |
b03b6dd5 | 633 | |
25c71c75 | 634 | if (err == 0) |
635 | br_ifinfo_notify(RTM_NEWLINK, p); | |
407af329 | 636 | out: |
25c71c75 | 637 | return err; |
11dc1f36 SH |
638 | } |
639 | ||
407af329 | 640 | /* Delete port information */ |
add511b3 | 641 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) |
407af329 | 642 | { |
407af329 VY |
643 | struct nlattr *afspec; |
644 | struct net_bridge_port *p; | |
8508025c | 645 | int err = 0; |
407af329 | 646 | |
c60ee67f | 647 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
407af329 VY |
648 | if (!afspec) |
649 | return 0; | |
650 | ||
651 | p = br_port_get_rtnl(dev); | |
652 | /* We want to accept dev as bridge itself as well */ | |
653 | if (!p && !(dev->priv_flags & IFF_EBRIDGE)) | |
654 | return -EINVAL; | |
655 | ||
656 | err = br_afspec((struct net_bridge *)netdev_priv(dev), p, | |
657 | afspec, RTM_DELLINK); | |
02dba438 RP |
658 | if (err == 0) |
659 | /* Send RTM_NEWLINK because userspace | |
660 | * expects RTM_NEWLINK for vlan dels | |
661 | */ | |
662 | br_ifinfo_notify(RTM_NEWLINK, p); | |
407af329 VY |
663 | |
664 | return err; | |
665 | } | |
bb900b27 | 666 | static int br_validate(struct nlattr *tb[], struct nlattr *data[]) |
667 | { | |
668 | if (tb[IFLA_ADDRESS]) { | |
669 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
670 | return -EINVAL; | |
671 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
672 | return -EADDRNOTAVAIL; | |
673 | } | |
674 | ||
d2d427b3 TM |
675 | if (!data) |
676 | return 0; | |
677 | ||
678 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING | |
679 | if (data[IFLA_BR_VLAN_PROTOCOL]) { | |
680 | switch (nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL])) { | |
681 | case htons(ETH_P_8021Q): | |
682 | case htons(ETH_P_8021AD): | |
683 | break; | |
684 | default: | |
685 | return -EPROTONOSUPPORT; | |
686 | } | |
687 | } | |
688 | #endif | |
689 | ||
bb900b27 | 690 | return 0; |
691 | } | |
692 | ||
30313a3d TM |
693 | static int br_dev_newlink(struct net *src_net, struct net_device *dev, |
694 | struct nlattr *tb[], struct nlattr *data[]) | |
695 | { | |
696 | struct net_bridge *br = netdev_priv(dev); | |
697 | ||
698 | if (tb[IFLA_ADDRESS]) { | |
699 | spin_lock_bh(&br->lock); | |
700 | br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); | |
701 | spin_unlock_bh(&br->lock); | |
702 | } | |
703 | ||
704 | return register_netdevice(dev); | |
705 | } | |
706 | ||
3ac636b8 JP |
707 | static int br_port_slave_changelink(struct net_device *brdev, |
708 | struct net_device *dev, | |
709 | struct nlattr *tb[], | |
710 | struct nlattr *data[]) | |
711 | { | |
963ad948 NA |
712 | struct net_bridge *br = netdev_priv(brdev); |
713 | int ret; | |
714 | ||
3ac636b8 JP |
715 | if (!data) |
716 | return 0; | |
963ad948 NA |
717 | |
718 | spin_lock_bh(&br->lock); | |
719 | ret = br_setport(br_port_get_rtnl(dev), data); | |
720 | spin_unlock_bh(&br->lock); | |
721 | ||
722 | return ret; | |
3ac636b8 JP |
723 | } |
724 | ||
ced8283f JP |
725 | static int br_port_fill_slave_info(struct sk_buff *skb, |
726 | const struct net_device *brdev, | |
727 | const struct net_device *dev) | |
728 | { | |
729 | return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); | |
730 | } | |
731 | ||
732 | static size_t br_port_get_slave_size(const struct net_device *brdev, | |
733 | const struct net_device *dev) | |
734 | { | |
735 | return br_port_info_size(); | |
736 | } | |
737 | ||
13323516 JP |
738 | static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { |
739 | [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, | |
740 | [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, | |
741 | [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, | |
af615762 JT |
742 | [IFLA_BR_AGEING_TIME] = { .type = NLA_U32 }, |
743 | [IFLA_BR_STP_STATE] = { .type = NLA_U32 }, | |
744 | [IFLA_BR_PRIORITY] = { .type = NLA_U16 }, | |
a7854037 | 745 | [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, |
d2d427b3 | 746 | [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, |
13323516 JP |
747 | }; |
748 | ||
749 | static int br_changelink(struct net_device *brdev, struct nlattr *tb[], | |
750 | struct nlattr *data[]) | |
751 | { | |
752 | struct net_bridge *br = netdev_priv(brdev); | |
753 | int err; | |
754 | ||
755 | if (!data) | |
756 | return 0; | |
757 | ||
758 | if (data[IFLA_BR_FORWARD_DELAY]) { | |
759 | err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); | |
760 | if (err) | |
761 | return err; | |
762 | } | |
763 | ||
764 | if (data[IFLA_BR_HELLO_TIME]) { | |
765 | err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); | |
766 | if (err) | |
767 | return err; | |
768 | } | |
769 | ||
770 | if (data[IFLA_BR_MAX_AGE]) { | |
771 | err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); | |
772 | if (err) | |
773 | return err; | |
774 | } | |
775 | ||
af615762 JT |
776 | if (data[IFLA_BR_AGEING_TIME]) { |
777 | u32 ageing_time = nla_get_u32(data[IFLA_BR_AGEING_TIME]); | |
778 | ||
779 | br->ageing_time = clock_t_to_jiffies(ageing_time); | |
780 | } | |
781 | ||
782 | if (data[IFLA_BR_STP_STATE]) { | |
783 | u32 stp_enabled = nla_get_u32(data[IFLA_BR_STP_STATE]); | |
784 | ||
785 | br_stp_set_enabled(br, stp_enabled); | |
786 | } | |
787 | ||
788 | if (data[IFLA_BR_PRIORITY]) { | |
789 | u32 priority = nla_get_u16(data[IFLA_BR_PRIORITY]); | |
790 | ||
791 | br_stp_set_bridge_priority(br, priority); | |
792 | } | |
793 | ||
a7854037 NA |
794 | if (data[IFLA_BR_VLAN_FILTERING]) { |
795 | u8 vlan_filter = nla_get_u8(data[IFLA_BR_VLAN_FILTERING]); | |
796 | ||
797 | err = __br_vlan_filter_toggle(br, vlan_filter); | |
798 | if (err) | |
799 | return err; | |
800 | } | |
801 | ||
d2d427b3 TM |
802 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
803 | if (data[IFLA_BR_VLAN_PROTOCOL]) { | |
804 | __be16 vlan_proto = nla_get_be16(data[IFLA_BR_VLAN_PROTOCOL]); | |
805 | ||
806 | err = __br_vlan_set_proto(br, vlan_proto); | |
807 | if (err) | |
808 | return err; | |
809 | } | |
810 | #endif | |
811 | ||
13323516 JP |
812 | return 0; |
813 | } | |
814 | ||
e5c3ea5c JP |
815 | static size_t br_get_size(const struct net_device *brdev) |
816 | { | |
817 | return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ | |
818 | nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ | |
819 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ | |
af615762 JT |
820 | nla_total_size(sizeof(u32)) + /* IFLA_BR_AGEING_TIME */ |
821 | nla_total_size(sizeof(u32)) + /* IFLA_BR_STP_STATE */ | |
822 | nla_total_size(sizeof(u16)) + /* IFLA_BR_PRIORITY */ | |
a7854037 | 823 | nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */ |
d2d427b3 TM |
824 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
825 | nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */ | |
826 | #endif | |
e5c3ea5c JP |
827 | 0; |
828 | } | |
829 | ||
830 | static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) | |
831 | { | |
832 | struct net_bridge *br = netdev_priv(brdev); | |
833 | u32 forward_delay = jiffies_to_clock_t(br->forward_delay); | |
834 | u32 hello_time = jiffies_to_clock_t(br->hello_time); | |
835 | u32 age_time = jiffies_to_clock_t(br->max_age); | |
af615762 JT |
836 | u32 ageing_time = jiffies_to_clock_t(br->ageing_time); |
837 | u32 stp_enabled = br->stp_enabled; | |
838 | u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]; | |
a7854037 | 839 | u8 vlan_enabled = br_vlan_enabled(br); |
e5c3ea5c JP |
840 | |
841 | if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || | |
842 | nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || | |
af615762 JT |
843 | nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time) || |
844 | nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) || | |
845 | nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) || | |
a7854037 NA |
846 | nla_put_u16(skb, IFLA_BR_PRIORITY, priority) || |
847 | nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled)) | |
e5c3ea5c JP |
848 | return -EMSGSIZE; |
849 | ||
d2d427b3 TM |
850 | #ifdef CONFIG_BRIDGE_VLAN_FILTERING |
851 | if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto)) | |
852 | return -EMSGSIZE; | |
853 | #endif | |
854 | ||
e5c3ea5c JP |
855 | return 0; |
856 | } | |
857 | ||
fed0a159 RP |
858 | static size_t br_get_link_af_size(const struct net_device *dev) |
859 | { | |
860 | struct net_port_vlans *pv; | |
861 | ||
862 | if (br_port_exists(dev)) | |
863 | pv = nbp_get_vlan_info(br_port_get_rtnl(dev)); | |
864 | else if (dev->priv_flags & IFF_EBRIDGE) | |
865 | pv = br_get_vlan_info((struct net_bridge *)netdev_priv(dev)); | |
866 | else | |
867 | return 0; | |
868 | ||
869 | if (!pv) | |
870 | return 0; | |
871 | ||
872 | /* Each VLAN is returned in bridge_vlan_info along with flags */ | |
873 | return pv->num_vlans * nla_total_size(sizeof(struct bridge_vlan_info)); | |
874 | } | |
875 | ||
207895fd | 876 | static struct rtnl_af_ops br_af_ops __read_mostly = { |
6cbdceeb VY |
877 | .family = AF_BRIDGE, |
878 | .get_link_af_size = br_get_link_af_size, | |
879 | }; | |
880 | ||
149ddd83 | 881 | struct rtnl_link_ops br_link_ops __read_mostly = { |
ced8283f JP |
882 | .kind = "bridge", |
883 | .priv_size = sizeof(struct net_bridge), | |
884 | .setup = br_dev_setup, | |
eb4cb851 | 885 | .maxtype = IFLA_BR_MAX, |
13323516 | 886 | .policy = br_policy, |
ced8283f JP |
887 | .validate = br_validate, |
888 | .newlink = br_dev_newlink, | |
13323516 | 889 | .changelink = br_changelink, |
ced8283f | 890 | .dellink = br_dev_delete, |
e5c3ea5c JP |
891 | .get_size = br_get_size, |
892 | .fill_info = br_fill_info, | |
3ac636b8 JP |
893 | |
894 | .slave_maxtype = IFLA_BRPORT_MAX, | |
895 | .slave_policy = br_port_policy, | |
896 | .slave_changelink = br_port_slave_changelink, | |
ced8283f JP |
897 | .get_slave_size = br_port_get_slave_size, |
898 | .fill_slave_info = br_port_fill_slave_info, | |
bb900b27 | 899 | }; |
11dc1f36 | 900 | |
32fe21c0 | 901 | int __init br_netlink_init(void) |
11dc1f36 | 902 | { |
3ec8e9f0 VY |
903 | int err; |
904 | ||
905 | br_mdb_init(); | |
3678a9d8 | 906 | rtnl_af_register(&br_af_ops); |
3ec8e9f0 | 907 | |
6cbdceeb VY |
908 | err = rtnl_link_register(&br_link_ops); |
909 | if (err) | |
910 | goto out_af; | |
911 | ||
3ec8e9f0 | 912 | return 0; |
6cbdceeb VY |
913 | |
914 | out_af: | |
915 | rtnl_af_unregister(&br_af_ops); | |
3ec8e9f0 VY |
916 | br_mdb_uninit(); |
917 | return err; | |
11dc1f36 SH |
918 | } |
919 | ||
34666d46 | 920 | void br_netlink_fini(void) |
11dc1f36 | 921 | { |
3ec8e9f0 | 922 | br_mdb_uninit(); |
6cbdceeb | 923 | rtnl_af_unregister(&br_af_ops); |
bb900b27 | 924 | rtnl_link_unregister(&br_link_ops); |
11dc1f36 | 925 | } |