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 | |
25c71c75 | 24 | static inline size_t br_port_info_size(void) |
25 | { | |
26 | return nla_total_size(1) /* IFLA_BRPORT_STATE */ | |
27 | + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */ | |
28 | + nla_total_size(4) /* IFLA_BRPORT_COST */ | |
29 | + nla_total_size(1) /* IFLA_BRPORT_MODE */ | |
a2e01a65 | 30 | + nla_total_size(1) /* IFLA_BRPORT_GUARD */ |
1007dd1a | 31 | + nla_total_size(1) /* IFLA_BRPORT_PROTECT */ |
3da889b6 | 32 | + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */ |
25c71c75 | 33 | + 0; |
34 | } | |
35 | ||
339bf98f TG |
36 | static inline size_t br_nlmsg_size(void) |
37 | { | |
38 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
25c71c75 | 39 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ |
40 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
41 | + nla_total_size(4) /* IFLA_MASTER */ | |
42 | + nla_total_size(4) /* IFLA_MTU */ | |
43 | + nla_total_size(4) /* IFLA_LINK */ | |
44 | + nla_total_size(1) /* IFLA_OPERSTATE */ | |
45 | + nla_total_size(br_port_info_size()); /* IFLA_PROTINFO */ | |
46 | } | |
47 | ||
48 | static int br_port_fill_attrs(struct sk_buff *skb, | |
49 | const struct net_bridge_port *p) | |
50 | { | |
51 | u8 mode = !!(p->flags & BR_HAIRPIN_MODE); | |
52 | ||
53 | if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || | |
54 | nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || | |
55 | nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || | |
a2e01a65 | 56 | nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || |
1007dd1a | 57 | nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || |
c2d3babf DM |
58 | nla_put_u8(skb, IFLA_BRPORT_PROTECT, !!(p->flags & BR_ROOT_BLOCK)) || |
59 | nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, !!(p->flags & BR_MULTICAST_FAST_LEAVE))) | |
25c71c75 | 60 | return -EMSGSIZE; |
61 | ||
62 | return 0; | |
339bf98f TG |
63 | } |
64 | ||
11dc1f36 SH |
65 | /* |
66 | * Create one netlink message for one interface | |
67 | * Contains port and master info as well as carrier and bridge state. | |
68 | */ | |
6cbdceeb VY |
69 | static int br_fill_ifinfo(struct sk_buff *skb, |
70 | const struct net_bridge_port *port, | |
71 | u32 pid, u32 seq, int event, unsigned int flags, | |
72 | u32 filter_mask, const struct net_device *dev) | |
11dc1f36 | 73 | { |
6cbdceeb | 74 | const struct net_bridge *br; |
74685962 | 75 | struct ifinfomsg *hdr; |
11dc1f36 | 76 | struct nlmsghdr *nlh; |
11dc1f36 | 77 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
11dc1f36 | 78 | |
6cbdceeb VY |
79 | if (port) |
80 | br = port->br; | |
81 | else | |
82 | br = netdev_priv(dev); | |
83 | ||
28a16c97 | 84 | br_debug(br, "br_fill_info event %d port %s master %s\n", |
85 | event, dev->name, br->dev->name); | |
11dc1f36 | 86 | |
74685962 TG |
87 | nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); |
88 | if (nlh == NULL) | |
26932566 | 89 | return -EMSGSIZE; |
11dc1f36 | 90 | |
74685962 TG |
91 | hdr = nlmsg_data(nlh); |
92 | hdr->ifi_family = AF_BRIDGE; | |
93 | hdr->__ifi_pad = 0; | |
94 | hdr->ifi_type = dev->type; | |
95 | hdr->ifi_index = dev->ifindex; | |
96 | hdr->ifi_flags = dev_get_flags(dev); | |
97 | hdr->ifi_change = 0; | |
11dc1f36 | 98 | |
2eb812e6 DM |
99 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
100 | nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || | |
101 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
102 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
103 | (dev->addr_len && | |
104 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
105 | (dev->ifindex != dev->iflink && | |
25c71c75 | 106 | nla_put_u32(skb, IFLA_LINK, dev->iflink))) |
2eb812e6 | 107 | goto nla_put_failure; |
25c71c75 | 108 | |
6cbdceeb | 109 | if (event == RTM_NEWLINK && port) { |
25c71c75 | 110 | struct nlattr *nest |
111 | = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); | |
112 | ||
113 | if (nest == NULL || br_port_fill_attrs(skb, port) < 0) | |
114 | goto nla_put_failure; | |
115 | nla_nest_end(skb, nest); | |
116 | } | |
117 | ||
6cbdceeb VY |
118 | /* Check if the VID information is requested */ |
119 | if (filter_mask & RTEXT_FILTER_BRVLAN) { | |
120 | struct nlattr *af; | |
121 | const struct net_port_vlans *pv; | |
122 | struct bridge_vlan_info vinfo; | |
123 | u16 vid; | |
552406c4 | 124 | u16 pvid; |
6cbdceeb VY |
125 | |
126 | if (port) | |
127 | pv = nbp_get_vlan_info(port); | |
128 | else | |
129 | pv = br_get_vlan_info(br); | |
130 | ||
131 | if (!pv || bitmap_empty(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN)) | |
132 | goto done; | |
133 | ||
134 | af = nla_nest_start(skb, IFLA_AF_SPEC); | |
135 | if (!af) | |
136 | goto nla_put_failure; | |
137 | ||
552406c4 | 138 | pvid = br_get_pvid(pv); |
6cbdceeb VY |
139 | for (vid = find_first_bit(pv->vlan_bitmap, BR_VLAN_BITMAP_LEN); |
140 | vid < BR_VLAN_BITMAP_LEN; | |
141 | vid = find_next_bit(pv->vlan_bitmap, | |
142 | BR_VLAN_BITMAP_LEN, vid+1)) { | |
143 | vinfo.vid = vid; | |
144 | vinfo.flags = 0; | |
552406c4 VY |
145 | if (vid == pvid) |
146 | vinfo.flags |= BRIDGE_VLAN_INFO_PVID; | |
35e03f3a VY |
147 | |
148 | if (test_bit(vid, pv->untagged_bitmap)) | |
149 | vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
150 | ||
6cbdceeb VY |
151 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
152 | sizeof(vinfo), &vinfo)) | |
153 | goto nla_put_failure; | |
154 | } | |
155 | ||
156 | nla_nest_end(skb, af); | |
157 | } | |
158 | ||
159 | done: | |
74685962 | 160 | return nlmsg_end(skb, nlh); |
11dc1f36 | 161 | |
74685962 | 162 | nla_put_failure: |
26932566 PM |
163 | nlmsg_cancel(skb, nlh); |
164 | return -EMSGSIZE; | |
11dc1f36 SH |
165 | } |
166 | ||
167 | /* | |
168 | * Notify listeners of a change in port information | |
169 | */ | |
170 | void br_ifinfo_notify(int event, struct net_bridge_port *port) | |
171 | { | |
407af329 | 172 | struct net *net; |
11dc1f36 | 173 | struct sk_buff *skb; |
280a306c | 174 | int err = -ENOBUFS; |
11dc1f36 | 175 | |
407af329 VY |
176 | if (!port) |
177 | return; | |
178 | ||
179 | net = dev_net(port->dev); | |
28a16c97 | 180 | br_debug(port->br, "port %u(%s) event %d\n", |
95c96174 | 181 | (unsigned int)port->port_no, port->dev->name, event); |
28a16c97 | 182 | |
339bf98f | 183 | skb = nlmsg_new(br_nlmsg_size(), GFP_ATOMIC); |
280a306c TG |
184 | if (skb == NULL) |
185 | goto errout; | |
186 | ||
6cbdceeb | 187 | err = br_fill_ifinfo(skb, port, 0, 0, event, 0, 0, port->dev); |
26932566 PM |
188 | if (err < 0) { |
189 | /* -EMSGSIZE implies BUG in br_nlmsg_size() */ | |
190 | WARN_ON(err == -EMSGSIZE); | |
191 | kfree_skb(skb); | |
192 | goto errout; | |
193 | } | |
1ce85fe4 PNA |
194 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
195 | return; | |
280a306c | 196 | errout: |
bea1b42e | 197 | if (err < 0) |
4aa678ba | 198 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
11dc1f36 SH |
199 | } |
200 | ||
407af329 | 201 | |
11dc1f36 SH |
202 | /* |
203 | * Dump information about all ports, in response to GETLINK | |
204 | */ | |
e5a55a89 | 205 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
6cbdceeb | 206 | struct net_device *dev, u32 filter_mask) |
11dc1f36 | 207 | { |
e5a55a89 JF |
208 | int err = 0; |
209 | struct net_bridge_port *port = br_port_get_rcu(dev); | |
210 | ||
6cbdceeb VY |
211 | /* not a bridge port and */ |
212 | if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN)) | |
e5a55a89 | 213 | goto out; |
11dc1f36 | 214 | |
6cbdceeb VY |
215 | err = br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, NLM_F_MULTI, |
216 | filter_mask, dev); | |
e5a55a89 JF |
217 | out: |
218 | return err; | |
11dc1f36 SH |
219 | } |
220 | ||
15004cab | 221 | static const struct nla_policy ifla_br_policy[IFLA_MAX+1] = { |
407af329 VY |
222 | [IFLA_BRIDGE_FLAGS] = { .type = NLA_U16 }, |
223 | [IFLA_BRIDGE_MODE] = { .type = NLA_U16 }, | |
224 | [IFLA_BRIDGE_VLAN_INFO] = { .type = NLA_BINARY, | |
225 | .len = sizeof(struct bridge_vlan_info), }, | |
226 | }; | |
227 | ||
228 | static int br_afspec(struct net_bridge *br, | |
229 | struct net_bridge_port *p, | |
230 | struct nlattr *af_spec, | |
231 | int cmd) | |
232 | { | |
233 | struct nlattr *tb[IFLA_BRIDGE_MAX+1]; | |
234 | int err = 0; | |
235 | ||
236 | err = nla_parse_nested(tb, IFLA_BRIDGE_MAX, af_spec, ifla_br_policy); | |
237 | if (err) | |
238 | return err; | |
239 | ||
240 | if (tb[IFLA_BRIDGE_VLAN_INFO]) { | |
241 | struct bridge_vlan_info *vinfo; | |
242 | ||
243 | vinfo = nla_data(tb[IFLA_BRIDGE_VLAN_INFO]); | |
244 | ||
245 | if (vinfo->vid >= VLAN_N_VID) | |
246 | return -EINVAL; | |
247 | ||
248 | switch (cmd) { | |
249 | case RTM_SETLINK: | |
250 | if (p) { | |
552406c4 | 251 | err = nbp_vlan_add(p, vinfo->vid, vinfo->flags); |
407af329 VY |
252 | if (err) |
253 | break; | |
254 | ||
255 | if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) | |
552406c4 VY |
256 | err = br_vlan_add(p->br, vinfo->vid, |
257 | vinfo->flags); | |
407af329 | 258 | } else |
552406c4 | 259 | err = br_vlan_add(br, vinfo->vid, vinfo->flags); |
407af329 VY |
260 | |
261 | if (err) | |
262 | break; | |
263 | ||
264 | break; | |
265 | ||
266 | case RTM_DELLINK: | |
267 | if (p) { | |
268 | nbp_vlan_delete(p, vinfo->vid); | |
269 | if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) | |
270 | br_vlan_delete(p->br, vinfo->vid); | |
271 | } else | |
272 | br_vlan_delete(br, vinfo->vid); | |
273 | break; | |
274 | } | |
275 | } | |
276 | ||
277 | return err; | |
278 | } | |
279 | ||
25c71c75 | 280 | static const struct nla_policy ifla_brport_policy[IFLA_BRPORT_MAX + 1] = { |
281 | [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, | |
282 | [IFLA_BRPORT_COST] = { .type = NLA_U32 }, | |
283 | [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, | |
284 | [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, | |
a2e01a65 | 285 | [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, |
1007dd1a | 286 | [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, |
25c71c75 | 287 | }; |
288 | ||
289 | /* Change the state of the port and notify spanning tree */ | |
290 | static int br_set_port_state(struct net_bridge_port *p, u8 state) | |
291 | { | |
292 | if (state > BR_STATE_BLOCKING) | |
293 | return -EINVAL; | |
294 | ||
295 | /* if kernel STP is running, don't allow changes */ | |
296 | if (p->br->stp_enabled == BR_KERNEL_STP) | |
297 | return -EBUSY; | |
298 | ||
576eb625 | 299 | /* if device is not up, change is not allowed |
300 | * if link is not present, only allowable state is disabled | |
301 | */ | |
25c71c75 | 302 | if (!netif_running(p->dev) || |
576eb625 | 303 | (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) |
25c71c75 | 304 | return -ENETDOWN; |
305 | ||
306 | p->state = state; | |
307 | br_log_state(p); | |
308 | br_port_state_selection(p->br); | |
309 | return 0; | |
310 | } | |
311 | ||
312 | /* Set/clear or port flags based on attribute */ | |
313 | static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], | |
314 | int attrtype, unsigned long mask) | |
315 | { | |
316 | if (tb[attrtype]) { | |
317 | u8 flag = nla_get_u8(tb[attrtype]); | |
318 | if (flag) | |
319 | p->flags |= mask; | |
320 | else | |
321 | p->flags &= ~mask; | |
322 | } | |
323 | } | |
324 | ||
325 | /* Process bridge protocol info on port */ | |
326 | static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) | |
327 | { | |
328 | int err; | |
329 | ||
330 | br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); | |
a2e01a65 | 331 | br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); |
c2d3babf | 332 | br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); |
3d84fa98 | 333 | br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); |
25c71c75 | 334 | |
335 | if (tb[IFLA_BRPORT_COST]) { | |
336 | err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); | |
337 | if (err) | |
338 | return err; | |
339 | } | |
340 | ||
341 | if (tb[IFLA_BRPORT_PRIORITY]) { | |
342 | err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); | |
343 | if (err) | |
344 | return err; | |
345 | } | |
346 | ||
347 | if (tb[IFLA_BRPORT_STATE]) { | |
348 | err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); | |
349 | if (err) | |
350 | return err; | |
351 | } | |
352 | return 0; | |
353 | } | |
354 | ||
355 | /* Change state and parameters on port. */ | |
e5a55a89 | 356 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlh) |
11dc1f36 | 357 | { |
74685962 TG |
358 | struct ifinfomsg *ifm; |
359 | struct nlattr *protinfo; | |
407af329 | 360 | struct nlattr *afspec; |
11dc1f36 | 361 | struct net_bridge_port *p; |
2062cc20 | 362 | struct nlattr *tb[IFLA_BRPORT_MAX + 1]; |
25c71c75 | 363 | int err; |
11dc1f36 | 364 | |
74685962 | 365 | ifm = nlmsg_data(nlh); |
11dc1f36 | 366 | |
74685962 | 367 | protinfo = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_PROTINFO); |
407af329 VY |
368 | afspec = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_AF_SPEC); |
369 | if (!protinfo && !afspec) | |
25c71c75 | 370 | return 0; |
11dc1f36 | 371 | |
ec1e5610 | 372 | p = br_port_get_rtnl(dev); |
407af329 VY |
373 | /* We want to accept dev as bridge itself if the AF_SPEC |
374 | * is set to see if someone is setting vlan info on the brigde | |
375 | */ | |
376 | if (!p && ((dev->priv_flags & IFF_EBRIDGE) && !afspec)) | |
b5ed54e9 | 377 | return -EINVAL; |
11dc1f36 | 378 | |
407af329 VY |
379 | if (p && protinfo) { |
380 | if (protinfo->nla_type & NLA_F_NESTED) { | |
381 | err = nla_parse_nested(tb, IFLA_BRPORT_MAX, | |
382 | protinfo, ifla_brport_policy); | |
383 | if (err) | |
384 | return err; | |
385 | ||
386 | spin_lock_bh(&p->br->lock); | |
387 | err = br_setport(p, tb); | |
388 | spin_unlock_bh(&p->br->lock); | |
389 | } else { | |
390 | /* Binary compatability with old RSTP */ | |
391 | if (nla_len(protinfo) < sizeof(u8)) | |
392 | return -EINVAL; | |
393 | ||
394 | spin_lock_bh(&p->br->lock); | |
395 | err = br_set_port_state(p, nla_get_u8(protinfo)); | |
396 | spin_unlock_bh(&p->br->lock); | |
397 | } | |
25c71c75 | 398 | if (err) |
407af329 VY |
399 | goto out; |
400 | } | |
11dc1f36 | 401 | |
407af329 VY |
402 | if (afspec) { |
403 | err = br_afspec((struct net_bridge *)netdev_priv(dev), p, | |
404 | afspec, RTM_SETLINK); | |
25c71c75 | 405 | } |
b03b6dd5 | 406 | |
25c71c75 | 407 | if (err == 0) |
408 | br_ifinfo_notify(RTM_NEWLINK, p); | |
b03b6dd5 | 409 | |
407af329 | 410 | out: |
25c71c75 | 411 | return err; |
11dc1f36 SH |
412 | } |
413 | ||
407af329 VY |
414 | /* Delete port information */ |
415 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlh) | |
416 | { | |
417 | struct ifinfomsg *ifm; | |
418 | struct nlattr *afspec; | |
419 | struct net_bridge_port *p; | |
420 | int err; | |
421 | ||
422 | ifm = nlmsg_data(nlh); | |
423 | ||
424 | afspec = nlmsg_find_attr(nlh, sizeof(*ifm), IFLA_AF_SPEC); | |
425 | if (!afspec) | |
426 | return 0; | |
427 | ||
428 | p = br_port_get_rtnl(dev); | |
429 | /* We want to accept dev as bridge itself as well */ | |
430 | if (!p && !(dev->priv_flags & IFF_EBRIDGE)) | |
431 | return -EINVAL; | |
432 | ||
433 | err = br_afspec((struct net_bridge *)netdev_priv(dev), p, | |
434 | afspec, RTM_DELLINK); | |
435 | ||
436 | return err; | |
437 | } | |
bb900b27 | 438 | static int br_validate(struct nlattr *tb[], struct nlattr *data[]) |
439 | { | |
440 | if (tb[IFLA_ADDRESS]) { | |
441 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
442 | return -EINVAL; | |
443 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
444 | return -EADDRNOTAVAIL; | |
445 | } | |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
6cbdceeb VY |
450 | static size_t br_get_link_af_size(const struct net_device *dev) |
451 | { | |
452 | struct net_port_vlans *pv; | |
453 | ||
454 | if (br_port_exists(dev)) | |
455 | pv = nbp_get_vlan_info(br_port_get_rcu(dev)); | |
456 | else if (dev->priv_flags & IFF_EBRIDGE) | |
457 | pv = br_get_vlan_info((struct net_bridge *)netdev_priv(dev)); | |
458 | else | |
459 | return 0; | |
460 | ||
461 | if (!pv) | |
462 | return 0; | |
463 | ||
464 | /* Each VLAN is returned in bridge_vlan_info along with flags */ | |
465 | return pv->num_vlans * nla_total_size(sizeof(struct bridge_vlan_info)); | |
466 | } | |
467 | ||
15004cab | 468 | static struct rtnl_af_ops br_af_ops = { |
6cbdceeb VY |
469 | .family = AF_BRIDGE, |
470 | .get_link_af_size = br_get_link_af_size, | |
471 | }; | |
472 | ||
149ddd83 | 473 | struct rtnl_link_ops br_link_ops __read_mostly = { |
bb900b27 | 474 | .kind = "bridge", |
475 | .priv_size = sizeof(struct net_bridge), | |
476 | .setup = br_dev_setup, | |
477 | .validate = br_validate, | |
1ce5cce8 | 478 | .dellink = br_dev_delete, |
bb900b27 | 479 | }; |
11dc1f36 | 480 | |
32fe21c0 | 481 | int __init br_netlink_init(void) |
11dc1f36 | 482 | { |
3ec8e9f0 VY |
483 | int err; |
484 | ||
485 | br_mdb_init(); | |
6cbdceeb | 486 | err = rtnl_af_register(&br_af_ops); |
3ec8e9f0 VY |
487 | if (err) |
488 | goto out; | |
489 | ||
6cbdceeb VY |
490 | err = rtnl_link_register(&br_link_ops); |
491 | if (err) | |
492 | goto out_af; | |
493 | ||
3ec8e9f0 | 494 | return 0; |
6cbdceeb VY |
495 | |
496 | out_af: | |
497 | rtnl_af_unregister(&br_af_ops); | |
3ec8e9f0 VY |
498 | out: |
499 | br_mdb_uninit(); | |
500 | return err; | |
11dc1f36 SH |
501 | } |
502 | ||
503 | void __exit br_netlink_fini(void) | |
504 | { | |
3ec8e9f0 | 505 | br_mdb_uninit(); |
6cbdceeb | 506 | rtnl_af_unregister(&br_af_ops); |
bb900b27 | 507 | rtnl_link_unregister(&br_link_ops); |
11dc1f36 | 508 | } |