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 | |
25c71c75 | 25 | static inline size_t br_port_info_size(void) |
26 | { | |
27 | return nla_total_size(1) /* IFLA_BRPORT_STATE */ | |
28 | + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */ | |
29 | + nla_total_size(4) /* IFLA_BRPORT_COST */ | |
30 | + nla_total_size(1) /* IFLA_BRPORT_MODE */ | |
a2e01a65 | 31 | + nla_total_size(1) /* IFLA_BRPORT_GUARD */ |
1007dd1a | 32 | + nla_total_size(1) /* IFLA_BRPORT_PROTECT */ |
3da889b6 | 33 | + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */ |
9ba18891 | 34 | + nla_total_size(1) /* IFLA_BRPORT_LEARNING */ |
867a5943 | 35 | + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */ |
25c71c75 | 36 | + 0; |
37 | } | |
38 | ||
339bf98f TG |
39 | static inline size_t br_nlmsg_size(void) |
40 | { | |
41 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
25c71c75 | 42 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ |
43 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
44 | + nla_total_size(4) /* IFLA_MASTER */ | |
45 | + nla_total_size(4) /* IFLA_MTU */ | |
46 | + nla_total_size(4) /* IFLA_LINK */ | |
47 | + nla_total_size(1) /* IFLA_OPERSTATE */ | |
48 | + nla_total_size(br_port_info_size()); /* IFLA_PROTINFO */ | |
49 | } | |
50 | ||
51 | static int br_port_fill_attrs(struct sk_buff *skb, | |
52 | const struct net_bridge_port *p) | |
53 | { | |
54 | u8 mode = !!(p->flags & BR_HAIRPIN_MODE); | |
55 | ||
56 | if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) || | |
57 | nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) || | |
58 | nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) || | |
a2e01a65 | 59 | nla_put_u8(skb, IFLA_BRPORT_MODE, mode) || |
1007dd1a | 60 | nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) || |
c2d3babf | 61 | nla_put_u8(skb, IFLA_BRPORT_PROTECT, !!(p->flags & BR_ROOT_BLOCK)) || |
9ba18891 | 62 | nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, !!(p->flags & BR_MULTICAST_FAST_LEAVE)) || |
867a5943 | 63 | nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) || |
95850116 KP |
64 | nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_FLOOD)) || |
65 | nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP))) | |
25c71c75 | 66 | return -EMSGSIZE; |
67 | ||
68 | return 0; | |
339bf98f TG |
69 | } |
70 | ||
36cd0ffb RP |
71 | static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start, |
72 | u16 vid_end, u16 flags) | |
73 | { | |
74 | struct bridge_vlan_info vinfo; | |
75 | ||
76 | if ((vid_end - vid_start) > 0) { | |
77 | /* add range to skb */ | |
78 | vinfo.vid = vid_start; | |
79 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
80 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
81 | sizeof(vinfo), &vinfo)) | |
82 | goto nla_put_failure; | |
83 | ||
84 | vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
85 | ||
86 | vinfo.vid = vid_end; | |
87 | vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END; | |
88 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
89 | sizeof(vinfo), &vinfo)) | |
90 | goto nla_put_failure; | |
91 | } else { | |
92 | vinfo.vid = vid_start; | |
93 | vinfo.flags = flags; | |
94 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
95 | sizeof(vinfo), &vinfo)) | |
96 | goto nla_put_failure; | |
97 | } | |
98 | ||
99 | return 0; | |
100 | ||
101 | nla_put_failure: | |
102 | return -EMSGSIZE; | |
103 | } | |
104 | ||
105 | static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb, | |
106 | const struct net_port_vlans *pv) | |
107 | { | |
108 | u16 vid_range_start = 0, vid_range_end = 0; | |
0fe6de49 | 109 | u16 vid_range_flags = 0; |
36cd0ffb RP |
110 | u16 pvid, vid, flags; |
111 | int err = 0; | |
112 | ||
113 | /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan | |
114 | * and mark vlan info with begin and end flags | |
115 | * if vlaninfo represents a range | |
116 | */ | |
117 | pvid = br_get_pvid(pv); | |
118 | for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) { | |
119 | flags = 0; | |
120 | if (vid == pvid) | |
121 | flags |= BRIDGE_VLAN_INFO_PVID; | |
122 | ||
123 | if (test_bit(vid, pv->untagged_bitmap)) | |
124 | flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
125 | ||
126 | if (vid_range_start == 0) { | |
127 | goto initvars; | |
128 | } else if ((vid - vid_range_end) == 1 && | |
129 | flags == vid_range_flags) { | |
130 | vid_range_end = vid; | |
131 | continue; | |
132 | } else { | |
133 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, | |
134 | vid_range_end, | |
135 | vid_range_flags); | |
136 | if (err) | |
137 | return err; | |
138 | } | |
139 | ||
140 | initvars: | |
141 | vid_range_start = vid; | |
142 | vid_range_end = vid; | |
143 | vid_range_flags = flags; | |
144 | } | |
145 | ||
0fe6de49 RP |
146 | if (vid_range_start != 0) { |
147 | /* Call it once more to send any left over vlans */ | |
148 | err = br_fill_ifvlaninfo_range(skb, vid_range_start, | |
149 | vid_range_end, | |
150 | vid_range_flags); | |
151 | if (err) | |
152 | return err; | |
153 | } | |
36cd0ffb RP |
154 | |
155 | return 0; | |
156 | } | |
157 | ||
158 | static int br_fill_ifvlaninfo(struct sk_buff *skb, | |
159 | const struct net_port_vlans *pv) | |
160 | { | |
161 | struct bridge_vlan_info vinfo; | |
162 | u16 pvid, vid; | |
163 | ||
164 | pvid = br_get_pvid(pv); | |
165 | for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) { | |
166 | vinfo.vid = vid; | |
167 | vinfo.flags = 0; | |
168 | if (vid == pvid) | |
169 | vinfo.flags |= BRIDGE_VLAN_INFO_PVID; | |
170 | ||
171 | if (test_bit(vid, pv->untagged_bitmap)) | |
172 | vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
173 | ||
174 | if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO, | |
175 | sizeof(vinfo), &vinfo)) | |
176 | goto nla_put_failure; | |
177 | } | |
178 | ||
179 | return 0; | |
180 | ||
181 | nla_put_failure: | |
182 | return -EMSGSIZE; | |
183 | } | |
184 | ||
11dc1f36 SH |
185 | /* |
186 | * Create one netlink message for one interface | |
187 | * Contains port and master info as well as carrier and bridge state. | |
188 | */ | |
6cbdceeb VY |
189 | static int br_fill_ifinfo(struct sk_buff *skb, |
190 | const struct net_bridge_port *port, | |
191 | u32 pid, u32 seq, int event, unsigned int flags, | |
192 | u32 filter_mask, const struct net_device *dev) | |
11dc1f36 | 193 | { |
6cbdceeb | 194 | const struct net_bridge *br; |
74685962 | 195 | struct ifinfomsg *hdr; |
11dc1f36 | 196 | struct nlmsghdr *nlh; |
11dc1f36 | 197 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
11dc1f36 | 198 | |
6cbdceeb VY |
199 | if (port) |
200 | br = port->br; | |
201 | else | |
202 | br = netdev_priv(dev); | |
203 | ||
28a16c97 | 204 | br_debug(br, "br_fill_info event %d port %s master %s\n", |
205 | event, dev->name, br->dev->name); | |
11dc1f36 | 206 | |
74685962 TG |
207 | nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags); |
208 | if (nlh == NULL) | |
26932566 | 209 | return -EMSGSIZE; |
11dc1f36 | 210 | |
74685962 TG |
211 | hdr = nlmsg_data(nlh); |
212 | hdr->ifi_family = AF_BRIDGE; | |
213 | hdr->__ifi_pad = 0; | |
214 | hdr->ifi_type = dev->type; | |
215 | hdr->ifi_index = dev->ifindex; | |
216 | hdr->ifi_flags = dev_get_flags(dev); | |
217 | hdr->ifi_change = 0; | |
11dc1f36 | 218 | |
2eb812e6 DM |
219 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
220 | nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) || | |
221 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
222 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
223 | (dev->addr_len && | |
224 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
225 | (dev->ifindex != dev->iflink && | |
25c71c75 | 226 | nla_put_u32(skb, IFLA_LINK, dev->iflink))) |
2eb812e6 | 227 | goto nla_put_failure; |
25c71c75 | 228 | |
6cbdceeb | 229 | if (event == RTM_NEWLINK && port) { |
25c71c75 | 230 | struct nlattr *nest |
231 | = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); | |
232 | ||
233 | if (nest == NULL || br_port_fill_attrs(skb, port) < 0) | |
234 | goto nla_put_failure; | |
235 | nla_nest_end(skb, nest); | |
236 | } | |
237 | ||
6cbdceeb | 238 | /* Check if the VID information is requested */ |
36cd0ffb RP |
239 | if ((filter_mask & RTEXT_FILTER_BRVLAN) || |
240 | (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { | |
6cbdceeb | 241 | const struct net_port_vlans *pv; |
36cd0ffb RP |
242 | struct nlattr *af; |
243 | int err; | |
6cbdceeb VY |
244 | |
245 | if (port) | |
246 | pv = nbp_get_vlan_info(port); | |
247 | else | |
248 | pv = br_get_vlan_info(br); | |
249 | ||
ef40b7ef | 250 | if (!pv || bitmap_empty(pv->vlan_bitmap, VLAN_N_VID)) |
6cbdceeb VY |
251 | goto done; |
252 | ||
253 | af = nla_nest_start(skb, IFLA_AF_SPEC); | |
254 | if (!af) | |
255 | goto nla_put_failure; | |
256 | ||
36cd0ffb RP |
257 | if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) |
258 | err = br_fill_ifvlaninfo_compressed(skb, pv); | |
259 | else | |
260 | err = br_fill_ifvlaninfo(skb, pv); | |
261 | if (err) | |
262 | goto nla_put_failure; | |
6cbdceeb VY |
263 | nla_nest_end(skb, af); |
264 | } | |
265 | ||
266 | done: | |
053c095a JB |
267 | nlmsg_end(skb, nlh); |
268 | return 0; | |
11dc1f36 | 269 | |
74685962 | 270 | nla_put_failure: |
26932566 PM |
271 | nlmsg_cancel(skb, nlh); |
272 | return -EMSGSIZE; | |
11dc1f36 SH |
273 | } |
274 | ||
275 | /* | |
276 | * Notify listeners of a change in port information | |
277 | */ | |
278 | void br_ifinfo_notify(int event, struct net_bridge_port *port) | |
279 | { | |
407af329 | 280 | struct net *net; |
11dc1f36 | 281 | struct sk_buff *skb; |
280a306c | 282 | int err = -ENOBUFS; |
11dc1f36 | 283 | |
407af329 VY |
284 | if (!port) |
285 | return; | |
286 | ||
287 | net = dev_net(port->dev); | |
28a16c97 | 288 | br_debug(port->br, "port %u(%s) event %d\n", |
95c96174 | 289 | (unsigned int)port->port_no, port->dev->name, event); |
28a16c97 | 290 | |
339bf98f | 291 | skb = nlmsg_new(br_nlmsg_size(), GFP_ATOMIC); |
280a306c TG |
292 | if (skb == NULL) |
293 | goto errout; | |
294 | ||
6cbdceeb | 295 | err = br_fill_ifinfo(skb, port, 0, 0, event, 0, 0, port->dev); |
26932566 PM |
296 | if (err < 0) { |
297 | /* -EMSGSIZE implies BUG in br_nlmsg_size() */ | |
298 | WARN_ON(err == -EMSGSIZE); | |
299 | kfree_skb(skb); | |
300 | goto errout; | |
301 | } | |
1ce85fe4 PNA |
302 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
303 | return; | |
280a306c | 304 | errout: |
87e823b3 | 305 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
11dc1f36 SH |
306 | } |
307 | ||
407af329 | 308 | |
11dc1f36 SH |
309 | /* |
310 | * Dump information about all ports, in response to GETLINK | |
311 | */ | |
e5a55a89 | 312 | int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
6cbdceeb | 313 | struct net_device *dev, u32 filter_mask) |
11dc1f36 | 314 | { |
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)) | |
1b846f92 | 319 | return 0; |
11dc1f36 | 320 | |
1b846f92 DC |
321 | return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, NLM_F_MULTI, |
322 | filter_mask, dev); | |
11dc1f36 SH |
323 | } |
324 | ||
bdced7ef RP |
325 | static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, |
326 | int cmd, struct bridge_vlan_info *vinfo) | |
327 | { | |
328 | int err = 0; | |
329 | ||
330 | switch (cmd) { | |
331 | case RTM_SETLINK: | |
332 | if (p) { | |
333 | err = nbp_vlan_add(p, vinfo->vid, vinfo->flags); | |
334 | if (err) | |
335 | break; | |
336 | ||
337 | if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) | |
338 | err = br_vlan_add(p->br, vinfo->vid, | |
339 | vinfo->flags); | |
340 | } else { | |
341 | err = br_vlan_add(br, vinfo->vid, vinfo->flags); | |
342 | } | |
343 | break; | |
344 | ||
345 | case RTM_DELLINK: | |
346 | if (p) { | |
347 | nbp_vlan_delete(p, vinfo->vid); | |
348 | if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER) | |
349 | br_vlan_delete(p->br, vinfo->vid); | |
350 | } else { | |
351 | br_vlan_delete(br, vinfo->vid); | |
352 | } | |
353 | break; | |
354 | } | |
355 | ||
356 | return err; | |
357 | } | |
407af329 VY |
358 | |
359 | static int br_afspec(struct net_bridge *br, | |
360 | struct net_bridge_port *p, | |
361 | struct nlattr *af_spec, | |
362 | int cmd) | |
363 | { | |
bdced7ef RP |
364 | struct bridge_vlan_info *vinfo_start = NULL; |
365 | struct bridge_vlan_info *vinfo = NULL; | |
366 | struct nlattr *attr; | |
407af329 | 367 | int err = 0; |
bdced7ef | 368 | int rem; |
407af329 | 369 | |
bdced7ef RP |
370 | nla_for_each_nested(attr, af_spec, rem) { |
371 | if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO) | |
372 | continue; | |
373 | if (nla_len(attr) != sizeof(struct bridge_vlan_info)) | |
374 | return -EINVAL; | |
375 | vinfo = nla_data(attr); | |
376 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { | |
377 | if (vinfo_start) | |
378 | return -EINVAL; | |
379 | vinfo_start = vinfo; | |
380 | continue; | |
381 | } | |
407af329 | 382 | |
bdced7ef RP |
383 | if (vinfo_start) { |
384 | struct bridge_vlan_info tmp_vinfo; | |
385 | int v; | |
407af329 | 386 | |
bdced7ef RP |
387 | if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END)) |
388 | return -EINVAL; | |
407af329 | 389 | |
bdced7ef RP |
390 | if (vinfo->vid <= vinfo_start->vid) |
391 | return -EINVAL; | |
392 | ||
393 | memcpy(&tmp_vinfo, vinfo_start, | |
394 | sizeof(struct bridge_vlan_info)); | |
407af329 | 395 | |
bdced7ef RP |
396 | for (v = vinfo_start->vid; v <= vinfo->vid; v++) { |
397 | tmp_vinfo.vid = v; | |
398 | err = br_vlan_info(br, p, cmd, &tmp_vinfo); | |
407af329 VY |
399 | if (err) |
400 | break; | |
bdced7ef RP |
401 | } |
402 | vinfo_start = NULL; | |
403 | } else { | |
404 | err = br_vlan_info(br, p, cmd, vinfo); | |
407af329 | 405 | } |
bdced7ef RP |
406 | if (err) |
407 | break; | |
407af329 VY |
408 | } |
409 | ||
410 | return err; | |
411 | } | |
412 | ||
3ac636b8 | 413 | static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = { |
25c71c75 | 414 | [IFLA_BRPORT_STATE] = { .type = NLA_U8 }, |
415 | [IFLA_BRPORT_COST] = { .type = NLA_U32 }, | |
416 | [IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 }, | |
417 | [IFLA_BRPORT_MODE] = { .type = NLA_U8 }, | |
a2e01a65 | 418 | [IFLA_BRPORT_GUARD] = { .type = NLA_U8 }, |
1007dd1a | 419 | [IFLA_BRPORT_PROTECT] = { .type = NLA_U8 }, |
6f705d8c | 420 | [IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 }, |
9ba18891 | 421 | [IFLA_BRPORT_LEARNING] = { .type = NLA_U8 }, |
867a5943 | 422 | [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 }, |
25c71c75 | 423 | }; |
424 | ||
425 | /* Change the state of the port and notify spanning tree */ | |
426 | static int br_set_port_state(struct net_bridge_port *p, u8 state) | |
427 | { | |
428 | if (state > BR_STATE_BLOCKING) | |
429 | return -EINVAL; | |
430 | ||
431 | /* if kernel STP is running, don't allow changes */ | |
432 | if (p->br->stp_enabled == BR_KERNEL_STP) | |
433 | return -EBUSY; | |
434 | ||
576eb625 | 435 | /* if device is not up, change is not allowed |
436 | * if link is not present, only allowable state is disabled | |
437 | */ | |
25c71c75 | 438 | if (!netif_running(p->dev) || |
576eb625 | 439 | (!netif_oper_up(p->dev) && state != BR_STATE_DISABLED)) |
25c71c75 | 440 | return -ENETDOWN; |
441 | ||
775dd692 | 442 | br_set_state(p, state); |
25c71c75 | 443 | br_log_state(p); |
444 | br_port_state_selection(p->br); | |
445 | return 0; | |
446 | } | |
447 | ||
448 | /* Set/clear or port flags based on attribute */ | |
449 | static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], | |
450 | int attrtype, unsigned long mask) | |
451 | { | |
452 | if (tb[attrtype]) { | |
453 | u8 flag = nla_get_u8(tb[attrtype]); | |
454 | if (flag) | |
455 | p->flags |= mask; | |
456 | else | |
457 | p->flags &= ~mask; | |
458 | } | |
459 | } | |
460 | ||
461 | /* Process bridge protocol info on port */ | |
462 | static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) | |
463 | { | |
464 | int err; | |
e028e4b8 | 465 | unsigned long old_flags = p->flags; |
25c71c75 | 466 | |
467 | br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); | |
a2e01a65 | 468 | br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); |
c2d3babf | 469 | br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); |
3d84fa98 | 470 | br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); |
9ba18891 | 471 | br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); |
867a5943 | 472 | br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); |
95850116 | 473 | br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); |
25c71c75 | 474 | |
475 | if (tb[IFLA_BRPORT_COST]) { | |
476 | err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); | |
477 | if (err) | |
478 | return err; | |
479 | } | |
480 | ||
481 | if (tb[IFLA_BRPORT_PRIORITY]) { | |
482 | err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY])); | |
483 | if (err) | |
484 | return err; | |
485 | } | |
486 | ||
487 | if (tb[IFLA_BRPORT_STATE]) { | |
488 | err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE])); | |
489 | if (err) | |
490 | return err; | |
491 | } | |
e028e4b8 VY |
492 | |
493 | br_port_flags_change(p, old_flags ^ p->flags); | |
25c71c75 | 494 | return 0; |
495 | } | |
496 | ||
497 | /* Change state and parameters on port. */ | |
add511b3 | 498 | int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) |
11dc1f36 | 499 | { |
74685962 | 500 | struct nlattr *protinfo; |
407af329 | 501 | struct nlattr *afspec; |
11dc1f36 | 502 | struct net_bridge_port *p; |
2062cc20 | 503 | struct nlattr *tb[IFLA_BRPORT_MAX + 1]; |
68e331c7 | 504 | int err = 0, ret_offload = 0; |
11dc1f36 | 505 | |
c60ee67f H |
506 | protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO); |
507 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
407af329 | 508 | if (!protinfo && !afspec) |
25c71c75 | 509 | return 0; |
11dc1f36 | 510 | |
ec1e5610 | 511 | p = br_port_get_rtnl(dev); |
407af329 | 512 | /* We want to accept dev as bridge itself if the AF_SPEC |
8e3bff96 | 513 | * is set to see if someone is setting vlan info on the bridge |
407af329 | 514 | */ |
7b99a993 | 515 | if (!p && !afspec) |
b5ed54e9 | 516 | return -EINVAL; |
11dc1f36 | 517 | |
407af329 VY |
518 | if (p && protinfo) { |
519 | if (protinfo->nla_type & NLA_F_NESTED) { | |
520 | err = nla_parse_nested(tb, IFLA_BRPORT_MAX, | |
3ac636b8 | 521 | protinfo, br_port_policy); |
407af329 VY |
522 | if (err) |
523 | return err; | |
524 | ||
525 | spin_lock_bh(&p->br->lock); | |
526 | err = br_setport(p, tb); | |
527 | spin_unlock_bh(&p->br->lock); | |
528 | } else { | |
8e3bff96 | 529 | /* Binary compatibility with old RSTP */ |
407af329 VY |
530 | if (nla_len(protinfo) < sizeof(u8)) |
531 | return -EINVAL; | |
532 | ||
533 | spin_lock_bh(&p->br->lock); | |
534 | err = br_set_port_state(p, nla_get_u8(protinfo)); | |
535 | spin_unlock_bh(&p->br->lock); | |
536 | } | |
25c71c75 | 537 | if (err) |
407af329 VY |
538 | goto out; |
539 | } | |
11dc1f36 | 540 | |
407af329 VY |
541 | if (afspec) { |
542 | err = br_afspec((struct net_bridge *)netdev_priv(dev), p, | |
543 | afspec, RTM_SETLINK); | |
25c71c75 | 544 | } |
b03b6dd5 | 545 | |
1fd0bddb | 546 | if (p && !(flags & BRIDGE_FLAGS_SELF)) { |
68e331c7 RP |
547 | /* set bridge attributes in hardware if supported |
548 | */ | |
549 | ret_offload = netdev_switch_port_bridge_setlink(dev, nlh, | |
550 | flags); | |
551 | if (ret_offload && ret_offload != -EOPNOTSUPP) | |
552 | br_warn(p->br, "error setting attrs on port %u(%s)\n", | |
553 | (unsigned int)p->port_no, p->dev->name); | |
554 | } | |
555 | ||
25c71c75 | 556 | if (err == 0) |
557 | br_ifinfo_notify(RTM_NEWLINK, p); | |
407af329 | 558 | out: |
25c71c75 | 559 | return err; |
11dc1f36 SH |
560 | } |
561 | ||
407af329 | 562 | /* Delete port information */ |
add511b3 | 563 | int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags) |
407af329 | 564 | { |
407af329 VY |
565 | struct nlattr *afspec; |
566 | struct net_bridge_port *p; | |
68e331c7 | 567 | int err = 0, ret_offload = 0; |
407af329 | 568 | |
c60ee67f | 569 | afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
407af329 VY |
570 | if (!afspec) |
571 | return 0; | |
572 | ||
573 | p = br_port_get_rtnl(dev); | |
574 | /* We want to accept dev as bridge itself as well */ | |
575 | if (!p && !(dev->priv_flags & IFF_EBRIDGE)) | |
576 | return -EINVAL; | |
577 | ||
578 | err = br_afspec((struct net_bridge *)netdev_priv(dev), p, | |
579 | afspec, RTM_DELLINK); | |
02dba438 RP |
580 | if (err == 0) |
581 | /* Send RTM_NEWLINK because userspace | |
582 | * expects RTM_NEWLINK for vlan dels | |
583 | */ | |
584 | br_ifinfo_notify(RTM_NEWLINK, p); | |
407af329 | 585 | |
1fd0bddb | 586 | if (p && !(flags & BRIDGE_FLAGS_SELF)) { |
68e331c7 RP |
587 | /* del bridge attributes in hardware |
588 | */ | |
589 | ret_offload = netdev_switch_port_bridge_dellink(dev, nlh, | |
590 | flags); | |
591 | if (ret_offload && ret_offload != -EOPNOTSUPP) | |
592 | br_warn(p->br, "error deleting attrs on port %u (%s)\n", | |
593 | (unsigned int)p->port_no, p->dev->name); | |
594 | } | |
595 | ||
407af329 VY |
596 | return err; |
597 | } | |
bb900b27 | 598 | static int br_validate(struct nlattr *tb[], struct nlattr *data[]) |
599 | { | |
600 | if (tb[IFLA_ADDRESS]) { | |
601 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
602 | return -EINVAL; | |
603 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
604 | return -EADDRNOTAVAIL; | |
605 | } | |
606 | ||
607 | return 0; | |
608 | } | |
609 | ||
30313a3d TM |
610 | static int br_dev_newlink(struct net *src_net, struct net_device *dev, |
611 | struct nlattr *tb[], struct nlattr *data[]) | |
612 | { | |
613 | struct net_bridge *br = netdev_priv(dev); | |
614 | ||
615 | if (tb[IFLA_ADDRESS]) { | |
616 | spin_lock_bh(&br->lock); | |
617 | br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); | |
618 | spin_unlock_bh(&br->lock); | |
619 | } | |
620 | ||
621 | return register_netdevice(dev); | |
622 | } | |
623 | ||
3ac636b8 JP |
624 | static int br_port_slave_changelink(struct net_device *brdev, |
625 | struct net_device *dev, | |
626 | struct nlattr *tb[], | |
627 | struct nlattr *data[]) | |
628 | { | |
629 | if (!data) | |
630 | return 0; | |
631 | return br_setport(br_port_get_rtnl(dev), data); | |
632 | } | |
633 | ||
ced8283f JP |
634 | static int br_port_fill_slave_info(struct sk_buff *skb, |
635 | const struct net_device *brdev, | |
636 | const struct net_device *dev) | |
637 | { | |
638 | return br_port_fill_attrs(skb, br_port_get_rtnl(dev)); | |
639 | } | |
640 | ||
641 | static size_t br_port_get_slave_size(const struct net_device *brdev, | |
642 | const struct net_device *dev) | |
643 | { | |
644 | return br_port_info_size(); | |
645 | } | |
646 | ||
13323516 JP |
647 | static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { |
648 | [IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 }, | |
649 | [IFLA_BR_HELLO_TIME] = { .type = NLA_U32 }, | |
650 | [IFLA_BR_MAX_AGE] = { .type = NLA_U32 }, | |
651 | }; | |
652 | ||
653 | static int br_changelink(struct net_device *brdev, struct nlattr *tb[], | |
654 | struct nlattr *data[]) | |
655 | { | |
656 | struct net_bridge *br = netdev_priv(brdev); | |
657 | int err; | |
658 | ||
659 | if (!data) | |
660 | return 0; | |
661 | ||
662 | if (data[IFLA_BR_FORWARD_DELAY]) { | |
663 | err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY])); | |
664 | if (err) | |
665 | return err; | |
666 | } | |
667 | ||
668 | if (data[IFLA_BR_HELLO_TIME]) { | |
669 | err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME])); | |
670 | if (err) | |
671 | return err; | |
672 | } | |
673 | ||
674 | if (data[IFLA_BR_MAX_AGE]) { | |
675 | err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE])); | |
676 | if (err) | |
677 | return err; | |
678 | } | |
679 | ||
680 | return 0; | |
681 | } | |
682 | ||
e5c3ea5c JP |
683 | static size_t br_get_size(const struct net_device *brdev) |
684 | { | |
685 | return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */ | |
686 | nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */ | |
687 | nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */ | |
688 | 0; | |
689 | } | |
690 | ||
691 | static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) | |
692 | { | |
693 | struct net_bridge *br = netdev_priv(brdev); | |
694 | u32 forward_delay = jiffies_to_clock_t(br->forward_delay); | |
695 | u32 hello_time = jiffies_to_clock_t(br->hello_time); | |
696 | u32 age_time = jiffies_to_clock_t(br->max_age); | |
697 | ||
698 | if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) || | |
699 | nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) || | |
700 | nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time)) | |
701 | return -EMSGSIZE; | |
702 | ||
703 | return 0; | |
704 | } | |
705 | ||
6cbdceeb VY |
706 | static size_t br_get_link_af_size(const struct net_device *dev) |
707 | { | |
708 | struct net_port_vlans *pv; | |
709 | ||
710 | if (br_port_exists(dev)) | |
1fb1754a | 711 | pv = nbp_get_vlan_info(br_port_get_rtnl(dev)); |
6cbdceeb VY |
712 | else if (dev->priv_flags & IFF_EBRIDGE) |
713 | pv = br_get_vlan_info((struct net_bridge *)netdev_priv(dev)); | |
714 | else | |
715 | return 0; | |
716 | ||
717 | if (!pv) | |
718 | return 0; | |
719 | ||
720 | /* Each VLAN is returned in bridge_vlan_info along with flags */ | |
721 | return pv->num_vlans * nla_total_size(sizeof(struct bridge_vlan_info)); | |
722 | } | |
723 | ||
207895fd | 724 | static struct rtnl_af_ops br_af_ops __read_mostly = { |
6cbdceeb VY |
725 | .family = AF_BRIDGE, |
726 | .get_link_af_size = br_get_link_af_size, | |
727 | }; | |
728 | ||
149ddd83 | 729 | struct rtnl_link_ops br_link_ops __read_mostly = { |
ced8283f JP |
730 | .kind = "bridge", |
731 | .priv_size = sizeof(struct net_bridge), | |
732 | .setup = br_dev_setup, | |
13323516 JP |
733 | .maxtype = IFLA_BRPORT_MAX, |
734 | .policy = br_policy, | |
ced8283f JP |
735 | .validate = br_validate, |
736 | .newlink = br_dev_newlink, | |
13323516 | 737 | .changelink = br_changelink, |
ced8283f | 738 | .dellink = br_dev_delete, |
e5c3ea5c JP |
739 | .get_size = br_get_size, |
740 | .fill_info = br_fill_info, | |
3ac636b8 JP |
741 | |
742 | .slave_maxtype = IFLA_BRPORT_MAX, | |
743 | .slave_policy = br_port_policy, | |
744 | .slave_changelink = br_port_slave_changelink, | |
ced8283f JP |
745 | .get_slave_size = br_port_get_slave_size, |
746 | .fill_slave_info = br_port_fill_slave_info, | |
bb900b27 | 747 | }; |
11dc1f36 | 748 | |
32fe21c0 | 749 | int __init br_netlink_init(void) |
11dc1f36 | 750 | { |
3ec8e9f0 VY |
751 | int err; |
752 | ||
753 | br_mdb_init(); | |
3678a9d8 | 754 | rtnl_af_register(&br_af_ops); |
3ec8e9f0 | 755 | |
6cbdceeb VY |
756 | err = rtnl_link_register(&br_link_ops); |
757 | if (err) | |
758 | goto out_af; | |
759 | ||
3ec8e9f0 | 760 | return 0; |
6cbdceeb VY |
761 | |
762 | out_af: | |
763 | rtnl_af_unregister(&br_af_ops); | |
3ec8e9f0 VY |
764 | br_mdb_uninit(); |
765 | return err; | |
11dc1f36 SH |
766 | } |
767 | ||
34666d46 | 768 | void br_netlink_fini(void) |
11dc1f36 | 769 | { |
3ec8e9f0 | 770 | br_mdb_uninit(); |
6cbdceeb | 771 | rtnl_af_unregister(&br_af_ops); |
bb900b27 | 772 | rtnl_link_unregister(&br_link_ops); |
11dc1f36 | 773 | } |