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