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 | 62 | nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || |
95850116 KP |
63 | nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_FLOOD)) || |
64 | nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP))) | |
25c71c75 | 65 | return -EMSGSIZE; |
66 | ||
67 | return 0; | |
339bf98f TG |
68 | } |
69 | ||
36cd0ffb RP |
70 | static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, |
71 | u16 vid_end, u16 flags) | |
72 | { | |
73 | struct bridge_vlan_info vinfo; | |
74 | ||
75 | if ((vid_end - vid_start) > 0) { | |
76 | /* add range to skb */ | |
77 | vinfo.vid = vid_start; | |
78 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
79 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
80 | sizeof(vinfo), &vinfo)) | |
81 | goto nla_put_failure; | |
82 | ||
83 | vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
84 | ||
85 | vinfo.vid = vid_end; | |
86 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; | |
87 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
88 | sizeof(vinfo), &vinfo)) | |
89 | goto nla_put_failure; | |
90 | } else { | |
91 | vinfo.vid = vid_start; | |
92 | vinfo.flags = flags; | |
93 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
94 | sizeof(vinfo), &vinfo)) | |
95 | goto nla_put_failure; | |
96 | } | |
97 | ||
98 | return 0; | |
99 | ||
100 | nla_put_failure: | |
101 | return -EMSGSIZE; | |
102 | } | |
103 | ||
104 | static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, | |
105 | const struct net_port_vlans *pv) | |
106 | { | |
107 | u16 vid_range_start = 0, vid_range_end = 0; | |
0fe6de49 | 108 | u16 vid_range_flags = 0; |
36cd0ffb RP |
109 | u16 pvid, vid, flags; |
110 | int err = 0; | |
111 | ||
112 | /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan | |
113 | * and mark vlan info with begin and end flags | |
114 | * if vlaninfo represents a range | |
115 | */ | |
116 | pvid = br_get_pvid(pv); | |
117 | for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) { | |
118 | flags = 0; | |
119 | if (vid == pvid) | |
120 | flags |= BRIDGE_VLAN_INFO_PVID; | |
121 | ||
122 | if (test_bit(vid, pv->untagged_bitmap)) | |
123 | flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
124 | ||
125 | if (vid_range_start == 0) { | |
126 | goto initvars; | |
127 | } else if ((vid - vid_range_end) == 1 && | |
128 | flags == vid_range_flags) { | |
129 | vid_range_end = vid; | |
130 | continue; | |
131 | } else { | |
132 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, | |
133 | vid_range_end, | |
134 | vid_range_flags); | |
135 | if (err) | |
136 | return err; | |
137 | } | |
138 | ||
139 | initvars: | |
140 | vid_range_start = vid; | |
141 | vid_range_end = vid; | |
142 | vid_range_flags = flags; | |
143 | } | |
144 | ||
0fe6de49 RP |
145 | if (vid_range_start != 0) { |
146 | /* Call it once more to send any left over vlans */ | |
147 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, | |
148 | vid_range_end, | |
149 | vid_range_flags); | |
150 | if (err) | |
151 | return err; | |
152 | } | |
36cd0ffb RP |
153 | |
154 | return 0; | |
155 | } | |
156 | ||
157 | static int br_fill_ifvlaninfo(struct sk_buff *skb, | |
158 | const struct net_port_vlans *pv) | |
159 | { | |
160 | struct bridge_vlan_info vinfo; | |
161 | u16 pvid, vid; | |
162 | ||
163 | pvid = br_get_pvid(pv); | |
164 | for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) { | |
165 | vinfo.vid = vid; | |
166 | vinfo.flags = 0; | |
167 | if (vid == pvid) | |
168 | vinfo.flags |= BRIDGE_VLAN_INFO_PVID; | |
169 | ||
170 | if (test_bit(vid, pv->untagged_bitmap)) | |
171 | vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
172 | ||
173 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
174 | sizeof(vinfo), &vinfo)) | |
175 | goto nla_put_failure; | |
176 | } | |
177 | ||
178 | return 0; | |
179 | ||
180 | nla_put_failure: | |
181 | return -EMSGSIZE; | |
182 | } | |
183 | ||
11dc1f36 SH |
184 | /* |
185 | * Create one netlink message for one interface | |
186 | * Contains port and master info as well as carrier and bridge state. | |
187 | */ | |
6cbdceeb VY |
188 | static int br_fill_ifinfo(struct sk_buff *skb, |
189 | const struct net_bridge_port *port, | |
190 | u32 pid, u32 seq, int event, unsigned int flags, | |
191 | u32 filter_mask, const struct net_device *dev) | |
11dc1f36 | 192 | { |
6cbdceeb | 193 | const struct net_bridge *br; |
74685962 | 194 | struct ifinfomsg *hdr; |
11dc1f36 | 195 | struct nlmsghdr *nlh; |
11dc1f36 | 196 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
11dc1f36 | 197 | |
6cbdceeb VY |
198 | if (port) |
199 | br = port->br; | |
200 | else | |
201 | br = netdev_priv(dev); | |
202 | ||
28a16c97 | 203 | br_debug(br, "br_fill_info event %d port %s master %s\n", |
204 | event, dev->name, br->dev->name); | |
11dc1f36 | 205 | |
74685962 TG |
206 | nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); |
207 | if (nlh == NULL) | |
26932566 | 208 | return -EMSGSIZE; |
11dc1f36 | 209 | |
74685962 TG |
210 | hdr = nlmsg_data(nlh); |
211 | hdr->ifi_family = AF_BRIDGE; | |
212 | hdr->__ifi_pad = 0; | |
213 | hdr->ifi_type = dev->type; | |
214 | hdr->ifi_index = dev->ifindex; | |
215 | hdr->ifi_flags = dev_get_flags(dev); | |
216 | hdr->ifi_change = 0; | |
11dc1f36 | 217 | |
2eb812e6 DM |
218 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
219 | nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || | |
220 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
221 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
222 | (dev->addr_len && | |
223 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
224 | (dev->ifindex != dev->iflink && | |
25c71c75 | 225 | nla_put_u32(skb, IFLA_LINK, dev->iflink))) |
2eb812e6 | 226 | goto nla_put_failure; |
25c71c75 | 227 | |
6cbdceeb | 228 | if (event == RTM_NEWLINK && port) { |
25c71c75 | 229 | struct nlattr *nest |
230 | = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); | |
231 | ||
232 | if (nest == NULL || br_port_fill_attrs(skb, port) < 0) | |
233 | goto nla_put_failure; | |
234 | nla_nest_end(skb, nest); | |
235 | } | |
236 | ||
6cbdceeb | 237 | /* Check if the VID information is requested */ |
36cd0ffb RP |
238 | if ((filter_mask & RTEXT_FILTER_BRVLAN) || |
239 | (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { | |
6cbdceeb | 240 | const struct net_port_vlans *pv; |
36cd0ffb RP |
241 | struct nlattr *af; |
242 | int err; | |
6cbdceeb VY |
243 | |
244 | if (port) | |
245 | pv = nbp_get_vlan_info(port); | |
246 | else | |
247 | pv = br_get_vlan_info(br); | |
248 | ||
ef40b7ef | 249 | if (!pv || bitmap_empty(pv->vlan_bitmap, VLAN_N_VID)) |
6cbdceeb VY |
250 | goto done; |
251 | ||
252 | af = nla_nest_start(skb, IFLA_AF_SPEC); | |
253 | if (!af) | |
254 | goto nla_put_failure; | |
255 | ||
36cd0ffb RP |
256 | if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) |
257 | err = br_fill_ifvlaninfo_compressed(skb, pv); | |
258 | else | |
259 | err = br_fill_ifvlaninfo(skb, pv); | |
260 | if (err) | |
261 | goto nla_put_failure; | |
6cbdceeb VY |
262 | nla_nest_end(skb, af); |
263 | } | |
264 | ||
265 | done: | |
053c095a JB |
266 | nlmsg_end(skb, nlh); |
267 | return 0; | |
11dc1f36 | 268 | |
74685962 | 269 | nla_put_failure: |
26932566 PM |
270 | nlmsg_cancel(skb, nlh); |
271 | return -EMSGSIZE; | |
11dc1f36 SH |
272 | } |
273 | ||
274 | /* | |
275 | * Notify listeners of a change in port information | |
276 | */ | |
277 | void br_ifinfo_notify(int event, struct net_bridge_port *port) | |
278 | { | |
407af329 | 279 | struct net *net; |
11dc1f36 | 280 | struct sk_buff *skb; |
280a306c | 281 | int err = -ENOBUFS; |
11dc1f36 | 282 | |
407af329 VY |
283 | if (!port) |
284 | return; | |
285 | ||
286 | net = dev_net(port->dev); | |
28a16c97 | 287 | br_debug(port->br, "port %u(%s) event %d\n", |
95c96174 | 288 | (unsigned int)port->port_no, port->dev->name, event); |
28a16c97 | 289 | |
339bf98f | 290 | skb = nlmsg_new(br_nlmsg_size(), GFP_ATOMIC); |
280a306c TG |
291 | if (skb == NULL) |
292 | goto errout; | |
293 | ||
6cbdceeb | 294 | err = br_fill_ifinfo(skb, port, 0, 0, event, 0, 0, port->dev); |
26932566 PM |
295 | if (err < 0) { |
296 | /* -EMSGSIZE implies BUG in br_nlmsg_size() */ | |
297 | WARN_ON(err == -EMSGSIZE); | |
298 | kfree_skb(skb); | |
299 | goto errout; | |
300 | } | |
1ce85fe4 PNA |
301 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
302 | return; | |
280a306c | 303 | errout: |
87e823b3 | 304 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
11dc1f36 SH |
305 | } |
306 | ||
407af329 | 307 | |
11dc1f36 SH |
308 | /* |
309 | * Dump information about all ports, in response to GETLINK | |
310 | */ | |
e5a55a89 | 311 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
6cbdceeb | 312 | struct net_device *dev, u32 filter_mask) |
11dc1f36 | 313 | { |
e5a55a89 | 314 | int err = 0; |
1fb1754a | 315 | struct net_bridge_port *port = br_port_get_rtnl(dev); |
e5a55a89 | 316 | |
36cd0ffb RP |
317 | if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && |
318 | !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) | |
e5a55a89 | 319 | goto out; |
11dc1f36 | 320 | |
6cbdceeb VY |
321 | err = br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, NLM_F_MULTI, |
322 | filter_mask, dev); | |
e5a55a89 JF |
323 | out: |
324 | return err; | |
11dc1f36 SH |
325 | } |
326 | ||
bdced7ef RP |
327 | static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, |
328 | int cmd, struct bridge_vlan_info *vinfo) | |
329 | { | |
330 | int err = 0; | |
331 | ||
332 | switch (cmd) { | |
333 | case RTM_SETLINK: | |
334 | if (p) { | |
335 | err = nbp_vlan_add(p, vinfo->vid, vinfo->flags); | |
336 | if (err) | |
337 | break; | |
338 | ||
339 | if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) | |
340 | err = br_vlan_add(p->br, vinfo->vid, | |
341 | vinfo->flags); | |
342 | } else { | |
343 | err = br_vlan_add(br, vinfo->vid, vinfo->flags); | |
344 | } | |
345 | break; | |
346 | ||
347 | case RTM_DELLINK: | |
348 | if (p) { | |
349 | nbp_vlan_delete(p, vinfo->vid); | |
350 | if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) | |
351 | br_vlan_delete(p->br, vinfo->vid); | |
352 | } else { | |
353 | br_vlan_delete(br, vinfo->vid); | |
354 | } | |
355 | break; | |
356 | } | |
357 | ||
358 | return err; | |
359 | } | |
407af329 VY |
360 | |
361 | static int br_afspec(struct net_bridge *br, | |
362 | struct net_bridge_port *p, | |
363 | struct nlattr *af_spec, | |
364 | int cmd) | |
365 | { | |
bdced7ef RP |
366 | struct bridge_vlan_info *vinfo_start = NULL; |
367 | struct bridge_vlan_info *vinfo = NULL; | |
368 | struct nlattr *attr; | |
407af329 | 369 | int err = 0; |
bdced7ef | 370 | int rem; |
407af329 | 371 | |
bdced7ef RP |
372 | nla_for_each_nested(attr, af_spec, rem) { |
373 | if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO) | |
374 | continue; | |
375 | if (nla_len(attr) != sizeof(struct bridge_vlan_info)) | |
376 | return -EINVAL; | |
377 | vinfo = nla_data(attr); | |
378 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { | |
379 | if (vinfo_start) | |
380 | return -EINVAL; | |
381 | vinfo_start = vinfo; | |
382 | continue; | |
383 | } | |
407af329 | 384 | |
bdced7ef RP |
385 | if (vinfo_start) { |
386 | struct bridge_vlan_info tmp_vinfo; | |
387 | int v; | |
407af329 | 388 | |
bdced7ef RP |
389 | if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END)) |
390 | return -EINVAL; | |
407af329 | 391 | |
bdced7ef RP |
392 | if (vinfo->vid <= vinfo_start->vid) |
393 | return -EINVAL; | |
394 | ||
395 | memcpy(&tmp_vinfo, vinfo_start, | |
396 | sizeof(struct bridge_vlan_info)); | |
407af329 | 397 | |
bdced7ef RP |
398 | for (v = vinfo_start->vid; v <= vinfo->vid; v++) { |
399 | tmp_vinfo.vid = v; | |
400 | err = br_vlan_info(br, p, cmd, &tmp_vinfo); | |
407af329 VY |
401 | if (err) |
402 | break; | |
bdced7ef RP |
403 | } |
404 | vinfo_start = NULL; | |
405 | } else { | |
406 | err = br_vlan_info(br, p, cmd, vinfo); | |
407af329 | 407 | } |
bdced7ef RP |
408 | if (err) |
409 | break; | |
407af329 VY |
410 | } |
411 | ||
412 | return err; | |
413 | } | |
414 | ||
3ac636b8 | 415 | static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { |
25c71c75 | 416 | [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, |
417 | [IFLA_BRPORT_COST] = { .type = NLA_U32 }, | |
418 | [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, | |
419 | [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, | |
a2e01a65 | 420 | [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, |
1007dd1a | 421 | [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, |
6f705d8c | 422 | [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, |
9ba18891 | 423 | [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, |
867a5943 | 424 | [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, |
25c71c75 | 425 | }; |
426 | ||
427 | /* Change the state of the port and notify spanning tree */ | |
428 | static int br_set_port_state(struct net_bridge_port *p, u8 state) | |
429 | { | |
430 | if (state > BR_STATE_BLOCKING) | |
431 | return -EINVAL; | |
432 | ||
433 | /* if kernel STP is running, don't allow changes */ | |
434 | if (p->br->stp_enabled == BR_KERNEL_STP) | |
435 | return -EBUSY; | |
436 | ||
576eb625 | 437 | /* if device is not up, change is not allowed |
438 | * if link is not present, only allowable state is disabled | |
439 | */ | |
25c71c75 | 440 | if (!netif_running(p->dev) || |
576eb625 | 441 | (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) |
25c71c75 | 442 | return -ENETDOWN; |
443 | ||
775dd692 | 444 | br_set_state(p, state); |
25c71c75 | 445 | br_log_state(p); |
446 | br_port_state_selection(p->br); | |
447 | return 0; | |
448 | } | |
449 | ||
450 | /* Set/clear or port flags based on attribute */ | |
451 | static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], | |
452 | int attrtype, unsigned long mask) | |
453 | { | |
454 | if (tb[attrtype]) { | |
455 | u8 flag = nla_get_u8(tb[attrtype]); | |
456 | if (flag) | |
457 | p->flags |= mask; | |
458 | else | |
459 | p->flags &= ~mask; | |
460 | } | |
461 | } | |
462 | ||
463 | /* Process bridge protocol info on port */ | |
464 | static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) | |
465 | { | |
466 | int err; | |
e028e4b8 | 467 | unsigned long old_flags = p->flags; |
25c71c75 | 468 | |
469 | br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); | |
a2e01a65 | 470 | br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); |
c2d3babf | 471 | br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); |
3d84fa98 | 472 | br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); |
9ba18891 | 473 | br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); |
867a5943 | 474 | br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); |
95850116 | 475 | br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); |
25c71c75 | 476 | |
477 | if (tb[IFLA_BRPORT_COST]) { | |
478 | err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); | |
479 | if (err) | |
480 | return err; | |
481 | } | |
482 | ||
483 | if (tb[IFLA_BRPORT_PRIORITY]) { | |
484 | err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); | |
485 | if (err) | |
486 | return err; | |
487 | } | |
488 | ||
489 | if (tb[IFLA_BRPORT_STATE]) { | |
490 | err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); | |
491 | if (err) | |
492 | return err; | |
493 | } | |
e028e4b8 VY |
494 | |
495 | br_port_flags_change(p, old_flags ^ p->flags); | |
25c71c75 | 496 | return 0; |
497 | } | |
498 | ||
499 | /* Change state and parameters on port. */ | |
e5a55a89 | 500 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlh) |
11dc1f36 | 501 | { |
74685962 | 502 | struct nlattr *protinfo; |
407af329 | 503 | struct nlattr *afspec; |
11dc1f36 | 504 | struct net_bridge_port *p; |
2062cc20 | 505 | struct nlattr *tb[IFLA_BRPORT_MAX + 1]; |
7b99a993 | 506 | int err = 0; |
11dc1f36 | 507 | |
c60ee67f H |
508 | protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); |
509 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
407af329 | 510 | if (!protinfo && !afspec) |
25c71c75 | 511 | return 0; |
11dc1f36 | 512 | |
ec1e5610 | 513 | p = br_port_get_rtnl(dev); |
407af329 | 514 | /* We want to accept dev as bridge itself if the AF_SPEC |
8e3bff96 | 515 | * is set to see if someone is setting vlan info on the bridge |
407af329 | 516 | */ |
7b99a993 | 517 | if (!p && !afspec) |
b5ed54e9 | 518 | return -EINVAL; |
11dc1f36 | 519 | |
407af329 VY |
520 | if (p && protinfo) { |
521 | if (protinfo->nla_type & NLA_F_NESTED) { | |
522 | err = nla_parse_nested(tb, IFLA_BRPORT_MAX, | |
3ac636b8 | 523 | protinfo, br_port_policy); |
407af329 VY |
524 | if (err) |
525 | return err; | |
526 | ||
527 | spin_lock_bh(&p->br->lock); | |
528 | err = br_setport(p, tb); | |
529 | spin_unlock_bh(&p->br->lock); | |
530 | } else { | |
8e3bff96 | 531 | /* Binary compatibility with old RSTP */ |
407af329 VY |
532 | if (nla_len(protinfo) < sizeof(u8)) |
533 | return -EINVAL; | |
534 | ||
535 | spin_lock_bh(&p->br->lock); | |
536 | err = br_set_port_state(p, nla_get_u8(protinfo)); | |
537 | spin_unlock_bh(&p->br->lock); | |
538 | } | |
25c71c75 | 539 | if (err) |
407af329 VY |
540 | goto out; |
541 | } | |
11dc1f36 | 542 | |
407af329 VY |
543 | if (afspec) { |
544 | err = br_afspec((struct net_bridge *)netdev_priv(dev), p, | |
545 | afspec, RTM_SETLINK); | |
25c71c75 | 546 | } |
b03b6dd5 | 547 | |
25c71c75 | 548 | if (err == 0) |
549 | br_ifinfo_notify(RTM_NEWLINK, p); | |
b03b6dd5 | 550 | |
407af329 | 551 | out: |
25c71c75 | 552 | return err; |
11dc1f36 SH |
553 | } |
554 | ||
407af329 VY |
555 | /* Delete port information */ |
556 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlh) | |
557 | { | |
407af329 VY |
558 | struct nlattr *afspec; |
559 | struct net_bridge_port *p; | |
560 | int err; | |
561 | ||
c60ee67f | 562 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
407af329 VY |
563 | if (!afspec) |
564 | return 0; | |
565 | ||
566 | p = br_port_get_rtnl(dev); | |
567 | /* We want to accept dev as bridge itself as well */ | |
568 | if (!p && !(dev->priv_flags & IFF_EBRIDGE)) | |
569 | return -EINVAL; | |
570 | ||
571 | err = br_afspec((struct net_bridge *)netdev_priv(dev), p, | |
572 | afspec, RTM_DELLINK); | |
02dba438 RP |
573 | if (err == 0) |
574 | /* Send RTM_NEWLINK because userspace | |
575 | * expects RTM_NEWLINK for vlan dels | |
576 | */ | |
577 | br_ifinfo_notify(RTM_NEWLINK, p); | |
407af329 VY |
578 | |
579 | return err; | |
580 | } | |
bb900b27 | 581 | static int br_validate(struct nlattr *tb[], struct nlattr *data[]) |
582 | { | |
583 | if (tb[IFLA_ADDRESS]) { | |
584 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
585 | return -EINVAL; | |
586 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
587 | return -EADDRNOTAVAIL; | |
588 | } | |
589 | ||
590 | return 0; | |
591 | } | |
592 | ||
30313a3d TM |
593 | static int br_dev_newlink(struct net *src_net, struct net_device *dev, |
594 | struct nlattr *tb[], struct nlattr *data[]) | |
595 | { | |
596 | struct net_bridge *br = netdev_priv(dev); | |
597 | ||
598 | if (tb[IFLA_ADDRESS]) { | |
599 | spin_lock_bh(&br->lock); | |
600 | br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); | |
601 | spin_unlock_bh(&br->lock); | |
602 | } | |
603 | ||
604 | return register_netdevice(dev); | |
605 | } | |
606 | ||
3ac636b8 JP |
607 | static int br_port_slave_changelink(struct net_device *brdev, |
608 | struct net_device *dev, | |
609 | struct nlattr *tb[], | |
610 | struct nlattr *data[]) | |
611 | { | |
612 | if (!data) | |
613 | return 0; | |
614 | return br_setport(br_port_get_rtnl(dev), data); | |
615 | } | |
616 | ||
ced8283f JP |
617 | static int br_port_fill_slave_info(struct sk_buff *skb, |
618 | const struct net_device *brdev, | |
619 | const struct net_device *dev) | |
620 | { | |
621 | return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); | |
622 | } | |
623 | ||
624 | static size_t br_port_get_slave_size(const struct net_device *brdev, | |
625 | const struct net_device *dev) | |
626 | { | |
627 | return br_port_info_size(); | |
628 | } | |
629 | ||
13323516 JP |
630 | static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { |
631 | [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, | |
632 | [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, | |
633 | [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, | |
634 | }; | |
635 | ||
636 | static int br_changelink(struct net_device *brdev, struct nlattr *tb[], | |
637 | struct nlattr *data[]) | |
638 | { | |
639 | struct net_bridge *br = netdev_priv(brdev); | |
640 | int err; | |
641 | ||
642 | if (!data) | |
643 | return 0; | |
644 | ||
645 | if (data[IFLA_BR_FORWARD_DELAY]) { | |
646 | err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); | |
647 | if (err) | |
648 | return err; | |
649 | } | |
650 | ||
651 | if (data[IFLA_BR_HELLO_TIME]) { | |
652 | err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); | |
653 | if (err) | |
654 | return err; | |
655 | } | |
656 | ||
657 | if (data[IFLA_BR_MAX_AGE]) { | |
658 | err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); | |
659 | if (err) | |
660 | return err; | |
661 | } | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
e5c3ea5c JP |
666 | static size_t br_get_size(const struct net_device *brdev) |
667 | { | |
668 | return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ | |
669 | nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ | |
670 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ | |
671 | 0; | |
672 | } | |
673 | ||
674 | static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) | |
675 | { | |
676 | struct net_bridge *br = netdev_priv(brdev); | |
677 | u32 forward_delay = jiffies_to_clock_t(br->forward_delay); | |
678 | u32 hello_time = jiffies_to_clock_t(br->hello_time); | |
679 | u32 age_time = jiffies_to_clock_t(br->max_age); | |
680 | ||
681 | if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || | |
682 | nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || | |
683 | nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time)) | |
684 | return -EMSGSIZE; | |
685 | ||
686 | return 0; | |
687 | } | |
688 | ||
6cbdceeb VY |
689 | static size_t br_get_link_af_size(const struct net_device *dev) |
690 | { | |
691 | struct net_port_vlans *pv; | |
692 | ||
693 | if (br_port_exists(dev)) | |
1fb1754a | 694 | pv = nbp_get_vlan_info(br_port_get_rtnl(dev)); |
6cbdceeb VY |
695 | else if (dev->priv_flags & IFF_EBRIDGE) |
696 | pv = br_get_vlan_info((struct net_bridge *)netdev_priv(dev)); | |
697 | else | |
698 | return 0; | |
699 | ||
700 | if (!pv) | |
701 | return 0; | |
702 | ||
703 | /* Each VLAN is returned in bridge_vlan_info along with flags */ | |
704 | return pv->num_vlans * nla_total_size(sizeof(struct bridge_vlan_info)); | |
705 | } | |
706 | ||
15004cab | 707 | static struct rtnl_af_ops br_af_ops = { |
6cbdceeb VY |
708 | .family = AF_BRIDGE, |
709 | .get_link_af_size = br_get_link_af_size, | |
710 | }; | |
711 | ||
149ddd83 | 712 | struct rtnl_link_ops br_link_ops __read_mostly = { |
ced8283f JP |
713 | .kind = "bridge", |
714 | .priv_size = sizeof(struct net_bridge), | |
715 | .setup = br_dev_setup, | |
13323516 JP |
716 | .maxtype = IFLA_BRPORT_MAX, |
717 | .policy = br_policy, | |
ced8283f JP |
718 | .validate = br_validate, |
719 | .newlink = br_dev_newlink, | |
13323516 | 720 | .changelink = br_changelink, |
ced8283f | 721 | .dellink = br_dev_delete, |
e5c3ea5c JP |
722 | .get_size = br_get_size, |
723 | .fill_info = br_fill_info, | |
3ac636b8 JP |
724 | |
725 | .slave_maxtype = IFLA_BRPORT_MAX, | |
726 | .slave_policy = br_port_policy, | |
727 | .slave_changelink = br_port_slave_changelink, | |
ced8283f JP |
728 | .get_slave_size = br_port_get_slave_size, |
729 | .fill_slave_info = br_port_fill_slave_info, | |
bb900b27 | 730 | }; |
11dc1f36 | 731 | |
32fe21c0 | 732 | int __init br_netlink_init(void) |
11dc1f36 | 733 | { |
3ec8e9f0 VY |
734 | int err; |
735 | ||
736 | br_mdb_init(); | |
3678a9d8 | 737 | rtnl_af_register(&br_af_ops); |
3ec8e9f0 | 738 | |
6cbdceeb VY |
739 | err = rtnl_link_register(&br_link_ops); |
740 | if (err) | |
741 | goto out_af; | |
742 | ||
3ec8e9f0 | 743 | return 0; |
6cbdceeb VY |
744 | |
745 | out_af: | |
746 | rtnl_af_unregister(&br_af_ops); | |
3ec8e9f0 VY |
747 | br_mdb_uninit(); |
748 | return err; | |
11dc1f36 SH |
749 | } |
750 | ||
34666d46 | 751 | void br_netlink_fini(void) |
11dc1f36 | 752 | { |
3ec8e9f0 | 753 | br_mdb_uninit(); |
6cbdceeb | 754 | rtnl_af_unregister(&br_af_ops); |
bb900b27 | 755 | rtnl_link_unregister(&br_link_ops); |
11dc1f36 | 756 | } |