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 */ |
9ba18891 | 33 | + nla_total_size(1) /* IFLA_BRPORT_LEARNING */ |
867a5943 | 34 | + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */ |
25c71c75 | 35 | + 0; |
36 | } | |
37 | ||
339bf98f TG |
38 | static inline size_t br_nlmsg_size(void) |
39 | { | |
40 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
25c71c75 | 41 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ |
42 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
43 | + nla_total_size(4) /* IFLA_MASTER */ | |
44 | + nla_total_size(4) /* IFLA_MTU */ | |
45 | + nla_total_size(4) /* IFLA_LINK */ | |
46 | + nla_total_size(1) /* IFLA_OPERSTATE */ | |
47 | + nla_total_size(br_port_info_size()); /* IFLA_PROTINFO */ | |
48 | } | |
49 | ||
50 | static int br_port_fill_attrs(struct sk_buff *skb, | |
51 | const struct net_bridge_port *p) | |
52 | { | |
53 | u8 mode = !!(p->flags & BR_HAIRPIN_MODE); | |
54 | ||
55 | if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || | |
56 | nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || | |
57 | nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || | |
a2e01a65 | 58 | nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || |
1007dd1a | 59 | nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || |
c2d3babf | 60 | nla_put_u8(skb, IFLA_BRPORT_PROTECT, !!(p->flags & BR_ROOT_BLOCK)) || |
9ba18891 | 61 | nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || |
867a5943 VY |
62 | nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || |
63 | nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_FLOOD))) | |
25c71c75 | 64 | return -EMSGSIZE; |
65 | ||
66 | return 0; | |
339bf98f TG |
67 | } |
68 | ||
11dc1f36 SH |
69 | /* |
70 | * Create one netlink message for one interface | |
71 | * Contains port and master info as well as carrier and bridge state. | |
72 | */ | |
6cbdceeb VY |
73 | static int br_fill_ifinfo(struct sk_buff *skb, |
74 | const struct net_bridge_port *port, | |
75 | u32 pid, u32 seq, int event, unsigned int flags, | |
76 | u32 filter_mask, const struct net_device *dev) | |
11dc1f36 | 77 | { |
6cbdceeb | 78 | const struct net_bridge *br; |
74685962 | 79 | struct ifinfomsg *hdr; |
11dc1f36 | 80 | struct nlmsghdr *nlh; |
11dc1f36 | 81 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
11dc1f36 | 82 | |
6cbdceeb VY |
83 | if (port) |
84 | br = port->br; | |
85 | else | |
86 | br = netdev_priv(dev); | |
87 | ||
28a16c97 | 88 | br_debug(br, "br_fill_info event %d port %s master %s\n", |
89 | event, dev->name, br->dev->name); | |
11dc1f36 | 90 | |
74685962 TG |
91 | nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); |
92 | if (nlh == NULL) | |
26932566 | 93 | return -EMSGSIZE; |
11dc1f36 | 94 | |
74685962 TG |
95 | hdr = nlmsg_data(nlh); |
96 | hdr->ifi_family = AF_BRIDGE; | |
97 | hdr->__ifi_pad = 0; | |
98 | hdr->ifi_type = dev->type; | |
99 | hdr->ifi_index = dev->ifindex; | |
100 | hdr->ifi_flags = dev_get_flags(dev); | |
101 | hdr->ifi_change = 0; | |
11dc1f36 | 102 | |
2eb812e6 DM |
103 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
104 | nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || | |
105 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
106 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
107 | (dev->addr_len && | |
108 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
109 | (dev->ifindex != dev->iflink && | |
25c71c75 | 110 | nla_put_u32(skb, IFLA_LINK, dev->iflink))) |
2eb812e6 | 111 | goto nla_put_failure; |
25c71c75 | 112 | |
6cbdceeb | 113 | if (event == RTM_NEWLINK && port) { |
25c71c75 | 114 | struct nlattr *nest |
115 | = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); | |
116 | ||
117 | if (nest == NULL || br_port_fill_attrs(skb, port) < 0) | |
118 | goto nla_put_failure; | |
119 | nla_nest_end(skb, nest); | |
120 | } | |
121 | ||
6cbdceeb VY |
122 | /* Check if the VID information is requested */ |
123 | if (filter_mask & RTEXT_FILTER_BRVLAN) { | |
124 | struct nlattr *af; | |
125 | const struct net_port_vlans *pv; | |
126 | struct bridge_vlan_info vinfo; | |
127 | u16 vid; | |
552406c4 | 128 | u16 pvid; |
6cbdceeb VY |
129 | |
130 | if (port) | |
131 | pv = nbp_get_vlan_info(port); | |
132 | else | |
133 | pv = br_get_vlan_info(br); | |
134 | ||
ef40b7ef | 135 | if (!pv || bitmap_empty(pv->vlan_bitmap, VLAN_N_VID)) |
6cbdceeb VY |
136 | goto done; |
137 | ||
138 | af = nla_nest_start(skb, IFLA_AF_SPEC); | |
139 | if (!af) | |
140 | goto nla_put_failure; | |
141 | ||
552406c4 | 142 | pvid = br_get_pvid(pv); |
ef40b7ef | 143 | for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) { |
6cbdceeb VY |
144 | vinfo.vid = vid; |
145 | vinfo.flags = 0; | |
552406c4 VY |
146 | if (vid == pvid) |
147 | vinfo.flags |= BRIDGE_VLAN_INFO_PVID; | |
35e03f3a VY |
148 | |
149 | if (test_bit(vid, pv->untagged_bitmap)) | |
150 | vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
151 | ||
6cbdceeb VY |
152 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, |
153 | sizeof(vinfo), &vinfo)) | |
154 | goto nla_put_failure; | |
155 | } | |
156 | ||
157 | nla_nest_end(skb, af); | |
158 | } | |
159 | ||
160 | done: | |
74685962 | 161 | return nlmsg_end(skb, nlh); |
11dc1f36 | 162 | |
74685962 | 163 | nla_put_failure: |
26932566 PM |
164 | nlmsg_cancel(skb, nlh); |
165 | return -EMSGSIZE; | |
11dc1f36 SH |
166 | } |
167 | ||
168 | /* | |
169 | * Notify listeners of a change in port information | |
170 | */ | |
171 | void br_ifinfo_notify(int event, struct net_bridge_port *port) | |
172 | { | |
407af329 | 173 | struct net *net; |
11dc1f36 | 174 | struct sk_buff *skb; |
280a306c | 175 | int err = -ENOBUFS; |
11dc1f36 | 176 | |
407af329 VY |
177 | if (!port) |
178 | return; | |
179 | ||
180 | net = dev_net(port->dev); | |
28a16c97 | 181 | br_debug(port->br, "port %u(%s) event %d\n", |
95c96174 | 182 | (unsigned int)port->port_no, port->dev->name, event); |
28a16c97 | 183 | |
339bf98f | 184 | skb = nlmsg_new(br_nlmsg_size(), GFP_ATOMIC); |
280a306c TG |
185 | if (skb == NULL) |
186 | goto errout; | |
187 | ||
6cbdceeb | 188 | err = br_fill_ifinfo(skb, port, 0, 0, event, 0, 0, port->dev); |
26932566 PM |
189 | if (err < 0) { |
190 | /* -EMSGSIZE implies BUG in br_nlmsg_size() */ | |
191 | WARN_ON(err == -EMSGSIZE); | |
192 | kfree_skb(skb); | |
193 | goto errout; | |
194 | } | |
1ce85fe4 PNA |
195 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
196 | return; | |
280a306c | 197 | errout: |
87e823b3 | 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 | 208 | int err = 0; |
1fb1754a | 209 | struct net_bridge_port *port = br_port_get_rtnl(dev); |
e5a55a89 | 210 | |
6cbdceeb | 211 | if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN)) |
e5a55a89 | 212 | goto out; |
11dc1f36 | 213 | |
6cbdceeb VY |
214 | err = br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, NLM_F_MULTI, |
215 | filter_mask, dev); | |
e5a55a89 JF |
216 | out: |
217 | return err; | |
11dc1f36 SH |
218 | } |
219 | ||
15004cab | 220 | static const struct nla_policy ifla_br_policy[IFLA_MAX+1] = { |
407af329 VY |
221 | [IFLA_BRIDGE_FLAGS] = { .type = NLA_U16 }, |
222 | [IFLA_BRIDGE_MODE] = { .type = NLA_U16 }, | |
223 | [IFLA_BRIDGE_VLAN_INFO] = { .type = NLA_BINARY, | |
224 | .len = sizeof(struct bridge_vlan_info), }, | |
225 | }; | |
226 | ||
227 | static int br_afspec(struct net_bridge *br, | |
228 | struct net_bridge_port *p, | |
229 | struct nlattr *af_spec, | |
230 | int cmd) | |
231 | { | |
232 | struct nlattr *tb[IFLA_BRIDGE_MAX+1]; | |
233 | int err = 0; | |
234 | ||
235 | err = nla_parse_nested(tb, IFLA_BRIDGE_MAX, af_spec, ifla_br_policy); | |
236 | if (err) | |
237 | return err; | |
238 | ||
239 | if (tb[IFLA_BRIDGE_VLAN_INFO]) { | |
240 | struct bridge_vlan_info *vinfo; | |
241 | ||
242 | vinfo = nla_data(tb[IFLA_BRIDGE_VLAN_INFO]); | |
243 | ||
8adff41c | 244 | if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK) |
407af329 VY |
245 | return -EINVAL; |
246 | ||
247 | switch (cmd) { | |
248 | case RTM_SETLINK: | |
249 | if (p) { | |
552406c4 | 250 | err = nbp_vlan_add(p, vinfo->vid, vinfo->flags); |
407af329 VY |
251 | if (err) |
252 | break; | |
253 | ||
254 | if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) | |
552406c4 VY |
255 | err = br_vlan_add(p->br, vinfo->vid, |
256 | vinfo->flags); | |
407af329 | 257 | } else |
552406c4 | 258 | err = br_vlan_add(br, vinfo->vid, vinfo->flags); |
407af329 VY |
259 | |
260 | if (err) | |
261 | break; | |
262 | ||
263 | break; | |
264 | ||
265 | case RTM_DELLINK: | |
266 | if (p) { | |
267 | nbp_vlan_delete(p, vinfo->vid); | |
268 | if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) | |
269 | br_vlan_delete(p->br, vinfo->vid); | |
270 | } else | |
271 | br_vlan_delete(br, vinfo->vid); | |
272 | break; | |
273 | } | |
274 | } | |
275 | ||
276 | return err; | |
277 | } | |
278 | ||
3ac636b8 | 279 | static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { |
25c71c75 | 280 | [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, |
281 | [IFLA_BRPORT_COST] = { .type = NLA_U32 }, | |
282 | [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, | |
283 | [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, | |
a2e01a65 | 284 | [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, |
1007dd1a | 285 | [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, |
9ba18891 | 286 | [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, |
867a5943 | 287 | [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, |
25c71c75 | 288 | }; |
289 | ||
290 | /* Change the state of the port and notify spanning tree */ | |
291 | static int br_set_port_state(struct net_bridge_port *p, u8 state) | |
292 | { | |
293 | if (state > BR_STATE_BLOCKING) | |
294 | return -EINVAL; | |
295 | ||
296 | /* if kernel STP is running, don't allow changes */ | |
297 | if (p->br->stp_enabled == BR_KERNEL_STP) | |
298 | return -EBUSY; | |
299 | ||
576eb625 | 300 | /* if device is not up, change is not allowed |
301 | * if link is not present, only allowable state is disabled | |
302 | */ | |
25c71c75 | 303 | if (!netif_running(p->dev) || |
576eb625 | 304 | (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) |
25c71c75 | 305 | return -ENETDOWN; |
306 | ||
307 | p->state = state; | |
308 | br_log_state(p); | |
309 | br_port_state_selection(p->br); | |
310 | return 0; | |
311 | } | |
312 | ||
313 | /* Set/clear or port flags based on attribute */ | |
314 | static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], | |
315 | int attrtype, unsigned long mask) | |
316 | { | |
317 | if (tb[attrtype]) { | |
318 | u8 flag = nla_get_u8(tb[attrtype]); | |
319 | if (flag) | |
320 | p->flags |= mask; | |
321 | else | |
322 | p->flags &= ~mask; | |
323 | } | |
324 | } | |
325 | ||
326 | /* Process bridge protocol info on port */ | |
327 | static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) | |
328 | { | |
329 | int err; | |
e028e4b8 | 330 | unsigned long old_flags = p->flags; |
25c71c75 | 331 | |
332 | br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); | |
a2e01a65 | 333 | br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); |
c2d3babf | 334 | br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); |
3d84fa98 | 335 | br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); |
9ba18891 | 336 | br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); |
867a5943 | 337 | br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); |
25c71c75 | 338 | |
339 | if (tb[IFLA_BRPORT_COST]) { | |
340 | err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); | |
341 | if (err) | |
342 | return err; | |
343 | } | |
344 | ||
345 | if (tb[IFLA_BRPORT_PRIORITY]) { | |
346 | err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); | |
347 | if (err) | |
348 | return err; | |
349 | } | |
350 | ||
351 | if (tb[IFLA_BRPORT_STATE]) { | |
352 | err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); | |
353 | if (err) | |
354 | return err; | |
355 | } | |
e028e4b8 VY |
356 | |
357 | br_port_flags_change(p, old_flags ^ p->flags); | |
25c71c75 | 358 | return 0; |
359 | } | |
360 | ||
361 | /* Change state and parameters on port. */ | |
e5a55a89 | 362 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlh) |
11dc1f36 | 363 | { |
74685962 | 364 | struct nlattr *protinfo; |
407af329 | 365 | struct nlattr *afspec; |
11dc1f36 | 366 | struct net_bridge_port *p; |
2062cc20 | 367 | struct nlattr *tb[IFLA_BRPORT_MAX + 1]; |
7b99a993 | 368 | int err = 0; |
11dc1f36 | 369 | |
c60ee67f H |
370 | protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); |
371 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
407af329 | 372 | if (!protinfo && !afspec) |
25c71c75 | 373 | return 0; |
11dc1f36 | 374 | |
ec1e5610 | 375 | p = br_port_get_rtnl(dev); |
407af329 | 376 | /* We want to accept dev as bridge itself if the AF_SPEC |
8e3bff96 | 377 | * is set to see if someone is setting vlan info on the bridge |
407af329 | 378 | */ |
7b99a993 | 379 | if (!p && !afspec) |
b5ed54e9 | 380 | return -EINVAL; |
11dc1f36 | 381 | |
407af329 VY |
382 | if (p && protinfo) { |
383 | if (protinfo->nla_type & NLA_F_NESTED) { | |
384 | err = nla_parse_nested(tb, IFLA_BRPORT_MAX, | |
3ac636b8 | 385 | protinfo, br_port_policy); |
407af329 VY |
386 | if (err) |
387 | return err; | |
388 | ||
389 | spin_lock_bh(&p->br->lock); | |
390 | err = br_setport(p, tb); | |
391 | spin_unlock_bh(&p->br->lock); | |
392 | } else { | |
8e3bff96 | 393 | /* Binary compatibility with old RSTP */ |
407af329 VY |
394 | if (nla_len(protinfo) < sizeof(u8)) |
395 | return -EINVAL; | |
396 | ||
397 | spin_lock_bh(&p->br->lock); | |
398 | err = br_set_port_state(p, nla_get_u8(protinfo)); | |
399 | spin_unlock_bh(&p->br->lock); | |
400 | } | |
25c71c75 | 401 | if (err) |
407af329 VY |
402 | goto out; |
403 | } | |
11dc1f36 | 404 | |
407af329 VY |
405 | if (afspec) { |
406 | err = br_afspec((struct net_bridge *)netdev_priv(dev), p, | |
407 | afspec, RTM_SETLINK); | |
25c71c75 | 408 | } |
b03b6dd5 | 409 | |
25c71c75 | 410 | if (err == 0) |
411 | br_ifinfo_notify(RTM_NEWLINK, p); | |
b03b6dd5 | 412 | |
407af329 | 413 | out: |
25c71c75 | 414 | return err; |
11dc1f36 SH |
415 | } |
416 | ||
407af329 VY |
417 | /* Delete port information */ |
418 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlh) | |
419 | { | |
407af329 VY |
420 | struct nlattr *afspec; |
421 | struct net_bridge_port *p; | |
422 | int err; | |
423 | ||
c60ee67f | 424 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
407af329 VY |
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 | ||
30313a3d TM |
450 | static int br_dev_newlink(struct net *src_net, struct net_device *dev, |
451 | struct nlattr *tb[], struct nlattr *data[]) | |
452 | { | |
453 | struct net_bridge *br = netdev_priv(dev); | |
454 | ||
455 | if (tb[IFLA_ADDRESS]) { | |
456 | spin_lock_bh(&br->lock); | |
457 | br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); | |
458 | spin_unlock_bh(&br->lock); | |
459 | } | |
460 | ||
461 | return register_netdevice(dev); | |
462 | } | |
463 | ||
3ac636b8 JP |
464 | static int br_port_slave_changelink(struct net_device *brdev, |
465 | struct net_device *dev, | |
466 | struct nlattr *tb[], | |
467 | struct nlattr *data[]) | |
468 | { | |
469 | if (!data) | |
470 | return 0; | |
471 | return br_setport(br_port_get_rtnl(dev), data); | |
472 | } | |
473 | ||
ced8283f JP |
474 | static int br_port_fill_slave_info(struct sk_buff *skb, |
475 | const struct net_device *brdev, | |
476 | const struct net_device *dev) | |
477 | { | |
478 | return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); | |
479 | } | |
480 | ||
481 | static size_t br_port_get_slave_size(const struct net_device *brdev, | |
482 | const struct net_device *dev) | |
483 | { | |
484 | return br_port_info_size(); | |
485 | } | |
486 | ||
e5c3ea5c JP |
487 | static size_t br_get_size(const struct net_device *brdev) |
488 | { | |
489 | return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ | |
490 | nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ | |
491 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ | |
492 | 0; | |
493 | } | |
494 | ||
495 | static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) | |
496 | { | |
497 | struct net_bridge *br = netdev_priv(brdev); | |
498 | u32 forward_delay = jiffies_to_clock_t(br->forward_delay); | |
499 | u32 hello_time = jiffies_to_clock_t(br->hello_time); | |
500 | u32 age_time = jiffies_to_clock_t(br->max_age); | |
501 | ||
502 | if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || | |
503 | nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || | |
504 | nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time)) | |
505 | return -EMSGSIZE; | |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
6cbdceeb VY |
510 | static size_t br_get_link_af_size(const struct net_device *dev) |
511 | { | |
512 | struct net_port_vlans *pv; | |
513 | ||
514 | if (br_port_exists(dev)) | |
1fb1754a | 515 | pv = nbp_get_vlan_info(br_port_get_rtnl(dev)); |
6cbdceeb VY |
516 | else if (dev->priv_flags & IFF_EBRIDGE) |
517 | pv = br_get_vlan_info((struct net_bridge *)netdev_priv(dev)); | |
518 | else | |
519 | return 0; | |
520 | ||
521 | if (!pv) | |
522 | return 0; | |
523 | ||
524 | /* Each VLAN is returned in bridge_vlan_info along with flags */ | |
525 | return pv->num_vlans * nla_total_size(sizeof(struct bridge_vlan_info)); | |
526 | } | |
527 | ||
15004cab | 528 | static struct rtnl_af_ops br_af_ops = { |
6cbdceeb VY |
529 | .family = AF_BRIDGE, |
530 | .get_link_af_size = br_get_link_af_size, | |
531 | }; | |
532 | ||
149ddd83 | 533 | struct rtnl_link_ops br_link_ops __read_mostly = { |
ced8283f JP |
534 | .kind = "bridge", |
535 | .priv_size = sizeof(struct net_bridge), | |
536 | .setup = br_dev_setup, | |
537 | .validate = br_validate, | |
538 | .newlink = br_dev_newlink, | |
539 | .dellink = br_dev_delete, | |
e5c3ea5c JP |
540 | .get_size = br_get_size, |
541 | .fill_info = br_fill_info, | |
3ac636b8 JP |
542 | |
543 | .slave_maxtype = IFLA_BRPORT_MAX, | |
544 | .slave_policy = br_port_policy, | |
545 | .slave_changelink = br_port_slave_changelink, | |
ced8283f JP |
546 | .get_slave_size = br_port_get_slave_size, |
547 | .fill_slave_info = br_port_fill_slave_info, | |
bb900b27 | 548 | }; |
11dc1f36 | 549 | |
32fe21c0 | 550 | int __init br_netlink_init(void) |
11dc1f36 | 551 | { |
3ec8e9f0 VY |
552 | int err; |
553 | ||
554 | br_mdb_init(); | |
3678a9d8 | 555 | rtnl_af_register(&br_af_ops); |
3ec8e9f0 | 556 | |
6cbdceeb VY |
557 | err = rtnl_link_register(&br_link_ops); |
558 | if (err) | |
559 | goto out_af; | |
560 | ||
3ec8e9f0 | 561 | return 0; |
6cbdceeb VY |
562 | |
563 | out_af: | |
564 | rtnl_af_unregister(&br_af_ops); | |
3ec8e9f0 VY |
565 | br_mdb_uninit(); |
566 | return err; | |
11dc1f36 SH |
567 | } |
568 | ||
569 | void __exit br_netlink_fini(void) | |
570 | { | |
3ec8e9f0 | 571 | br_mdb_uninit(); |
6cbdceeb | 572 | rtnl_af_unregister(&br_af_ops); |
bb900b27 | 573 | rtnl_link_unregister(&br_link_ops); |
11dc1f36 | 574 | } |