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Commit | Line | Data |
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1 | /* | |
2 | * This is the new netlink-based wireless configuration interface. | |
3 | * | |
4 | * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net> | |
5 | */ | |
6 | ||
7 | #include <linux/if.h> | |
8 | #include <linux/module.h> | |
9 | #include <linux/err.h> | |
10 | #include <linux/mutex.h> | |
11 | #include <linux/list.h> | |
12 | #include <linux/if_ether.h> | |
13 | #include <linux/ieee80211.h> | |
14 | #include <linux/nl80211.h> | |
15 | #include <linux/rtnetlink.h> | |
16 | #include <linux/netlink.h> | |
17 | #include <net/genetlink.h> | |
18 | #include <net/cfg80211.h> | |
19 | #include "core.h" | |
20 | #include "nl80211.h" | |
21 | #include "reg.h" | |
22 | ||
23 | /* the netlink family */ | |
24 | static struct genl_family nl80211_fam = { | |
25 | .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ | |
26 | .name = "nl80211", /* have users key off the name instead */ | |
27 | .hdrsize = 0, /* no private header */ | |
28 | .version = 1, /* no particular meaning now */ | |
29 | .maxattr = NL80211_ATTR_MAX, | |
30 | }; | |
31 | ||
32 | /* internal helper: get drv and dev */ | |
33 | static int get_drv_dev_by_info_ifindex(struct nlattr **attrs, | |
34 | struct cfg80211_registered_device **drv, | |
35 | struct net_device **dev) | |
36 | { | |
37 | int ifindex; | |
38 | ||
39 | if (!attrs[NL80211_ATTR_IFINDEX]) | |
40 | return -EINVAL; | |
41 | ||
42 | ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); | |
43 | *dev = dev_get_by_index(&init_net, ifindex); | |
44 | if (!*dev) | |
45 | return -ENODEV; | |
46 | ||
47 | *drv = cfg80211_get_dev_from_ifindex(ifindex); | |
48 | if (IS_ERR(*drv)) { | |
49 | dev_put(*dev); | |
50 | return PTR_ERR(*drv); | |
51 | } | |
52 | ||
53 | return 0; | |
54 | } | |
55 | ||
56 | /* policy for the attributes */ | |
57 | static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { | |
58 | [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, | |
59 | [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, | |
60 | .len = BUS_ID_SIZE-1 }, | |
61 | ||
62 | [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, | |
63 | [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, | |
64 | [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, | |
65 | ||
66 | [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN }, | |
67 | ||
68 | [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, | |
69 | .len = WLAN_MAX_KEY_LEN }, | |
70 | [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, | |
71 | [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, | |
72 | [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, | |
73 | ||
74 | [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, | |
75 | [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, | |
76 | [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, | |
77 | .len = IEEE80211_MAX_DATA_LEN }, | |
78 | [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, | |
79 | .len = IEEE80211_MAX_DATA_LEN }, | |
80 | [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, | |
81 | [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, | |
82 | [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, | |
83 | [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, | |
84 | .len = NL80211_MAX_SUPP_RATES }, | |
85 | [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, | |
86 | [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, | |
87 | [NL80211_ATTR_MNTR_FLAGS] = { .type = NLA_NESTED }, | |
88 | [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, | |
89 | .len = IEEE80211_MAX_MESH_ID_LEN }, | |
90 | [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, | |
91 | ||
92 | [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, | |
93 | [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, | |
94 | ||
95 | [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, | |
96 | [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, | |
97 | [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, | |
98 | ||
99 | [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY, | |
100 | .len = NL80211_HT_CAPABILITY_LEN }, | |
101 | }; | |
102 | ||
103 | /* message building helper */ | |
104 | static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq, | |
105 | int flags, u8 cmd) | |
106 | { | |
107 | /* since there is no private header just add the generic one */ | |
108 | return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd); | |
109 | } | |
110 | ||
111 | /* netlink command implementations */ | |
112 | ||
113 | static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, | |
114 | struct cfg80211_registered_device *dev) | |
115 | { | |
116 | void *hdr; | |
117 | struct nlattr *nl_bands, *nl_band; | |
118 | struct nlattr *nl_freqs, *nl_freq; | |
119 | struct nlattr *nl_rates, *nl_rate; | |
120 | struct nlattr *nl_modes; | |
121 | enum ieee80211_band band; | |
122 | struct ieee80211_channel *chan; | |
123 | struct ieee80211_rate *rate; | |
124 | int i; | |
125 | u16 ifmodes = dev->wiphy.interface_modes; | |
126 | ||
127 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY); | |
128 | if (!hdr) | |
129 | return -1; | |
130 | ||
131 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx); | |
132 | NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); | |
133 | ||
134 | nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES); | |
135 | if (!nl_modes) | |
136 | goto nla_put_failure; | |
137 | ||
138 | i = 0; | |
139 | while (ifmodes) { | |
140 | if (ifmodes & 1) | |
141 | NLA_PUT_FLAG(msg, i); | |
142 | ifmodes >>= 1; | |
143 | i++; | |
144 | } | |
145 | ||
146 | nla_nest_end(msg, nl_modes); | |
147 | ||
148 | nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); | |
149 | if (!nl_bands) | |
150 | goto nla_put_failure; | |
151 | ||
152 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
153 | if (!dev->wiphy.bands[band]) | |
154 | continue; | |
155 | ||
156 | nl_band = nla_nest_start(msg, band); | |
157 | if (!nl_band) | |
158 | goto nla_put_failure; | |
159 | ||
160 | /* add frequencies */ | |
161 | nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS); | |
162 | if (!nl_freqs) | |
163 | goto nla_put_failure; | |
164 | ||
165 | for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) { | |
166 | nl_freq = nla_nest_start(msg, i); | |
167 | if (!nl_freq) | |
168 | goto nla_put_failure; | |
169 | ||
170 | chan = &dev->wiphy.bands[band]->channels[i]; | |
171 | NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ, | |
172 | chan->center_freq); | |
173 | ||
174 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
175 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED); | |
176 | if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
177 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN); | |
178 | if (chan->flags & IEEE80211_CHAN_NO_IBSS) | |
179 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS); | |
180 | if (chan->flags & IEEE80211_CHAN_RADAR) | |
181 | NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR); | |
182 | ||
183 | nla_nest_end(msg, nl_freq); | |
184 | } | |
185 | ||
186 | nla_nest_end(msg, nl_freqs); | |
187 | ||
188 | /* add bitrates */ | |
189 | nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); | |
190 | if (!nl_rates) | |
191 | goto nla_put_failure; | |
192 | ||
193 | for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) { | |
194 | nl_rate = nla_nest_start(msg, i); | |
195 | if (!nl_rate) | |
196 | goto nla_put_failure; | |
197 | ||
198 | rate = &dev->wiphy.bands[band]->bitrates[i]; | |
199 | NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE, | |
200 | rate->bitrate); | |
201 | if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) | |
202 | NLA_PUT_FLAG(msg, | |
203 | NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE); | |
204 | ||
205 | nla_nest_end(msg, nl_rate); | |
206 | } | |
207 | ||
208 | nla_nest_end(msg, nl_rates); | |
209 | ||
210 | nla_nest_end(msg, nl_band); | |
211 | } | |
212 | nla_nest_end(msg, nl_bands); | |
213 | ||
214 | return genlmsg_end(msg, hdr); | |
215 | ||
216 | nla_put_failure: | |
217 | genlmsg_cancel(msg, hdr); | |
218 | return -EMSGSIZE; | |
219 | } | |
220 | ||
221 | static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) | |
222 | { | |
223 | int idx = 0; | |
224 | int start = cb->args[0]; | |
225 | struct cfg80211_registered_device *dev; | |
226 | ||
227 | mutex_lock(&cfg80211_drv_mutex); | |
228 | list_for_each_entry(dev, &cfg80211_drv_list, list) { | |
229 | if (++idx <= start) | |
230 | continue; | |
231 | if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid, | |
232 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
233 | dev) < 0) { | |
234 | idx--; | |
235 | break; | |
236 | } | |
237 | } | |
238 | mutex_unlock(&cfg80211_drv_mutex); | |
239 | ||
240 | cb->args[0] = idx; | |
241 | ||
242 | return skb->len; | |
243 | } | |
244 | ||
245 | static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) | |
246 | { | |
247 | struct sk_buff *msg; | |
248 | struct cfg80211_registered_device *dev; | |
249 | ||
250 | dev = cfg80211_get_dev_from_info(info); | |
251 | if (IS_ERR(dev)) | |
252 | return PTR_ERR(dev); | |
253 | ||
254 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
255 | if (!msg) | |
256 | goto out_err; | |
257 | ||
258 | if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) | |
259 | goto out_free; | |
260 | ||
261 | cfg80211_put_dev(dev); | |
262 | ||
263 | return genlmsg_unicast(msg, info->snd_pid); | |
264 | ||
265 | out_free: | |
266 | nlmsg_free(msg); | |
267 | out_err: | |
268 | cfg80211_put_dev(dev); | |
269 | return -ENOBUFS; | |
270 | } | |
271 | ||
272 | static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) | |
273 | { | |
274 | struct cfg80211_registered_device *rdev; | |
275 | int result; | |
276 | ||
277 | if (!info->attrs[NL80211_ATTR_WIPHY_NAME]) | |
278 | return -EINVAL; | |
279 | ||
280 | rdev = cfg80211_get_dev_from_info(info); | |
281 | if (IS_ERR(rdev)) | |
282 | return PTR_ERR(rdev); | |
283 | ||
284 | result = cfg80211_dev_rename(rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); | |
285 | ||
286 | cfg80211_put_dev(rdev); | |
287 | return result; | |
288 | } | |
289 | ||
290 | ||
291 | static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags, | |
292 | struct net_device *dev) | |
293 | { | |
294 | void *hdr; | |
295 | ||
296 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE); | |
297 | if (!hdr) | |
298 | return -1; | |
299 | ||
300 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
301 | NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name); | |
302 | /* TODO: interface type */ | |
303 | return genlmsg_end(msg, hdr); | |
304 | ||
305 | nla_put_failure: | |
306 | genlmsg_cancel(msg, hdr); | |
307 | return -EMSGSIZE; | |
308 | } | |
309 | ||
310 | static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) | |
311 | { | |
312 | int wp_idx = 0; | |
313 | int if_idx = 0; | |
314 | int wp_start = cb->args[0]; | |
315 | int if_start = cb->args[1]; | |
316 | struct cfg80211_registered_device *dev; | |
317 | struct wireless_dev *wdev; | |
318 | ||
319 | mutex_lock(&cfg80211_drv_mutex); | |
320 | list_for_each_entry(dev, &cfg80211_drv_list, list) { | |
321 | if (wp_idx < wp_start) { | |
322 | wp_idx++; | |
323 | continue; | |
324 | } | |
325 | if_idx = 0; | |
326 | ||
327 | mutex_lock(&dev->devlist_mtx); | |
328 | list_for_each_entry(wdev, &dev->netdev_list, list) { | |
329 | if (if_idx < if_start) { | |
330 | if_idx++; | |
331 | continue; | |
332 | } | |
333 | if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid, | |
334 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
335 | wdev->netdev) < 0) { | |
336 | mutex_unlock(&dev->devlist_mtx); | |
337 | goto out; | |
338 | } | |
339 | if_idx++; | |
340 | } | |
341 | mutex_unlock(&dev->devlist_mtx); | |
342 | ||
343 | wp_idx++; | |
344 | } | |
345 | out: | |
346 | mutex_unlock(&cfg80211_drv_mutex); | |
347 | ||
348 | cb->args[0] = wp_idx; | |
349 | cb->args[1] = if_idx; | |
350 | ||
351 | return skb->len; | |
352 | } | |
353 | ||
354 | static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) | |
355 | { | |
356 | struct sk_buff *msg; | |
357 | struct cfg80211_registered_device *dev; | |
358 | struct net_device *netdev; | |
359 | int err; | |
360 | ||
361 | err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev); | |
362 | if (err) | |
363 | return err; | |
364 | ||
365 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
366 | if (!msg) | |
367 | goto out_err; | |
368 | ||
369 | if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, netdev) < 0) | |
370 | goto out_free; | |
371 | ||
372 | dev_put(netdev); | |
373 | cfg80211_put_dev(dev); | |
374 | ||
375 | return genlmsg_unicast(msg, info->snd_pid); | |
376 | ||
377 | out_free: | |
378 | nlmsg_free(msg); | |
379 | out_err: | |
380 | dev_put(netdev); | |
381 | cfg80211_put_dev(dev); | |
382 | return -ENOBUFS; | |
383 | } | |
384 | ||
385 | static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { | |
386 | [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, | |
387 | [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, | |
388 | [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, | |
389 | [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, | |
390 | [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, | |
391 | }; | |
392 | ||
393 | static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) | |
394 | { | |
395 | struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; | |
396 | int flag; | |
397 | ||
398 | *mntrflags = 0; | |
399 | ||
400 | if (!nla) | |
401 | return -EINVAL; | |
402 | ||
403 | if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, | |
404 | nla, mntr_flags_policy)) | |
405 | return -EINVAL; | |
406 | ||
407 | for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) | |
408 | if (flags[flag]) | |
409 | *mntrflags |= (1<<flag); | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
414 | static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) | |
415 | { | |
416 | struct cfg80211_registered_device *drv; | |
417 | struct vif_params params; | |
418 | int err, ifindex; | |
419 | enum nl80211_iftype type; | |
420 | struct net_device *dev; | |
421 | u32 flags; | |
422 | ||
423 | memset(¶ms, 0, sizeof(params)); | |
424 | ||
425 | if (info->attrs[NL80211_ATTR_IFTYPE]) { | |
426 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); | |
427 | if (type > NL80211_IFTYPE_MAX) | |
428 | return -EINVAL; | |
429 | } else | |
430 | return -EINVAL; | |
431 | ||
432 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
433 | if (err) | |
434 | return err; | |
435 | ifindex = dev->ifindex; | |
436 | dev_put(dev); | |
437 | ||
438 | if (!drv->ops->change_virtual_intf || | |
439 | !(drv->wiphy.interface_modes & (1 << type))) { | |
440 | err = -EOPNOTSUPP; | |
441 | goto unlock; | |
442 | } | |
443 | ||
444 | if (type == NL80211_IFTYPE_MESH_POINT && | |
445 | info->attrs[NL80211_ATTR_MESH_ID]) { | |
446 | params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); | |
447 | params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); | |
448 | } | |
449 | ||
450 | rtnl_lock(); | |
451 | err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? | |
452 | info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, | |
453 | &flags); | |
454 | err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex, | |
455 | type, err ? NULL : &flags, ¶ms); | |
456 | rtnl_unlock(); | |
457 | ||
458 | unlock: | |
459 | cfg80211_put_dev(drv); | |
460 | return err; | |
461 | } | |
462 | ||
463 | static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) | |
464 | { | |
465 | struct cfg80211_registered_device *drv; | |
466 | struct vif_params params; | |
467 | int err; | |
468 | enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; | |
469 | u32 flags; | |
470 | ||
471 | memset(¶ms, 0, sizeof(params)); | |
472 | ||
473 | if (!info->attrs[NL80211_ATTR_IFNAME]) | |
474 | return -EINVAL; | |
475 | ||
476 | if (info->attrs[NL80211_ATTR_IFTYPE]) { | |
477 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); | |
478 | if (type > NL80211_IFTYPE_MAX) | |
479 | return -EINVAL; | |
480 | } | |
481 | ||
482 | drv = cfg80211_get_dev_from_info(info); | |
483 | if (IS_ERR(drv)) | |
484 | return PTR_ERR(drv); | |
485 | ||
486 | if (!drv->ops->add_virtual_intf || | |
487 | !(drv->wiphy.interface_modes & (1 << type))) { | |
488 | err = -EOPNOTSUPP; | |
489 | goto unlock; | |
490 | } | |
491 | ||
492 | if (type == NL80211_IFTYPE_MESH_POINT && | |
493 | info->attrs[NL80211_ATTR_MESH_ID]) { | |
494 | params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); | |
495 | params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); | |
496 | } | |
497 | ||
498 | rtnl_lock(); | |
499 | err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? | |
500 | info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, | |
501 | &flags); | |
502 | err = drv->ops->add_virtual_intf(&drv->wiphy, | |
503 | nla_data(info->attrs[NL80211_ATTR_IFNAME]), | |
504 | type, err ? NULL : &flags, ¶ms); | |
505 | rtnl_unlock(); | |
506 | ||
507 | ||
508 | unlock: | |
509 | cfg80211_put_dev(drv); | |
510 | return err; | |
511 | } | |
512 | ||
513 | static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) | |
514 | { | |
515 | struct cfg80211_registered_device *drv; | |
516 | int ifindex, err; | |
517 | struct net_device *dev; | |
518 | ||
519 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
520 | if (err) | |
521 | return err; | |
522 | ifindex = dev->ifindex; | |
523 | dev_put(dev); | |
524 | ||
525 | if (!drv->ops->del_virtual_intf) { | |
526 | err = -EOPNOTSUPP; | |
527 | goto out; | |
528 | } | |
529 | ||
530 | rtnl_lock(); | |
531 | err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex); | |
532 | rtnl_unlock(); | |
533 | ||
534 | out: | |
535 | cfg80211_put_dev(drv); | |
536 | return err; | |
537 | } | |
538 | ||
539 | struct get_key_cookie { | |
540 | struct sk_buff *msg; | |
541 | int error; | |
542 | }; | |
543 | ||
544 | static void get_key_callback(void *c, struct key_params *params) | |
545 | { | |
546 | struct get_key_cookie *cookie = c; | |
547 | ||
548 | if (params->key) | |
549 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA, | |
550 | params->key_len, params->key); | |
551 | ||
552 | if (params->seq) | |
553 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ, | |
554 | params->seq_len, params->seq); | |
555 | ||
556 | if (params->cipher) | |
557 | NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER, | |
558 | params->cipher); | |
559 | ||
560 | return; | |
561 | nla_put_failure: | |
562 | cookie->error = 1; | |
563 | } | |
564 | ||
565 | static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) | |
566 | { | |
567 | struct cfg80211_registered_device *drv; | |
568 | int err; | |
569 | struct net_device *dev; | |
570 | u8 key_idx = 0; | |
571 | u8 *mac_addr = NULL; | |
572 | struct get_key_cookie cookie = { | |
573 | .error = 0, | |
574 | }; | |
575 | void *hdr; | |
576 | struct sk_buff *msg; | |
577 | ||
578 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
579 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
580 | ||
581 | if (key_idx > 3) | |
582 | return -EINVAL; | |
583 | ||
584 | if (info->attrs[NL80211_ATTR_MAC]) | |
585 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
586 | ||
587 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
588 | if (err) | |
589 | return err; | |
590 | ||
591 | if (!drv->ops->get_key) { | |
592 | err = -EOPNOTSUPP; | |
593 | goto out; | |
594 | } | |
595 | ||
596 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
597 | if (!msg) { | |
598 | err = -ENOMEM; | |
599 | goto out; | |
600 | } | |
601 | ||
602 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
603 | NL80211_CMD_NEW_KEY); | |
604 | ||
605 | if (IS_ERR(hdr)) { | |
606 | err = PTR_ERR(hdr); | |
607 | goto out; | |
608 | } | |
609 | ||
610 | cookie.msg = msg; | |
611 | ||
612 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
613 | NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); | |
614 | if (mac_addr) | |
615 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); | |
616 | ||
617 | rtnl_lock(); | |
618 | err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr, | |
619 | &cookie, get_key_callback); | |
620 | rtnl_unlock(); | |
621 | ||
622 | if (err) | |
623 | goto out; | |
624 | ||
625 | if (cookie.error) | |
626 | goto nla_put_failure; | |
627 | ||
628 | genlmsg_end(msg, hdr); | |
629 | err = genlmsg_unicast(msg, info->snd_pid); | |
630 | goto out; | |
631 | ||
632 | nla_put_failure: | |
633 | err = -ENOBUFS; | |
634 | nlmsg_free(msg); | |
635 | out: | |
636 | cfg80211_put_dev(drv); | |
637 | dev_put(dev); | |
638 | return err; | |
639 | } | |
640 | ||
641 | static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) | |
642 | { | |
643 | struct cfg80211_registered_device *drv; | |
644 | int err; | |
645 | struct net_device *dev; | |
646 | u8 key_idx; | |
647 | ||
648 | if (!info->attrs[NL80211_ATTR_KEY_IDX]) | |
649 | return -EINVAL; | |
650 | ||
651 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
652 | ||
653 | if (key_idx > 3) | |
654 | return -EINVAL; | |
655 | ||
656 | /* currently only support setting default key */ | |
657 | if (!info->attrs[NL80211_ATTR_KEY_DEFAULT]) | |
658 | return -EINVAL; | |
659 | ||
660 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
661 | if (err) | |
662 | return err; | |
663 | ||
664 | if (!drv->ops->set_default_key) { | |
665 | err = -EOPNOTSUPP; | |
666 | goto out; | |
667 | } | |
668 | ||
669 | rtnl_lock(); | |
670 | err = drv->ops->set_default_key(&drv->wiphy, dev, key_idx); | |
671 | rtnl_unlock(); | |
672 | ||
673 | out: | |
674 | cfg80211_put_dev(drv); | |
675 | dev_put(dev); | |
676 | return err; | |
677 | } | |
678 | ||
679 | static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) | |
680 | { | |
681 | struct cfg80211_registered_device *drv; | |
682 | int err; | |
683 | struct net_device *dev; | |
684 | struct key_params params; | |
685 | u8 key_idx = 0; | |
686 | u8 *mac_addr = NULL; | |
687 | ||
688 | memset(¶ms, 0, sizeof(params)); | |
689 | ||
690 | if (!info->attrs[NL80211_ATTR_KEY_CIPHER]) | |
691 | return -EINVAL; | |
692 | ||
693 | if (info->attrs[NL80211_ATTR_KEY_DATA]) { | |
694 | params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); | |
695 | params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); | |
696 | } | |
697 | ||
698 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
699 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
700 | ||
701 | params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); | |
702 | ||
703 | if (info->attrs[NL80211_ATTR_MAC]) | |
704 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
705 | ||
706 | if (key_idx > 3) | |
707 | return -EINVAL; | |
708 | ||
709 | /* | |
710 | * Disallow pairwise keys with non-zero index unless it's WEP | |
711 | * (because current deployments use pairwise WEP keys with | |
712 | * non-zero indizes but 802.11i clearly specifies to use zero) | |
713 | */ | |
714 | if (mac_addr && key_idx && | |
715 | params.cipher != WLAN_CIPHER_SUITE_WEP40 && | |
716 | params.cipher != WLAN_CIPHER_SUITE_WEP104) | |
717 | return -EINVAL; | |
718 | ||
719 | /* TODO: add definitions for the lengths to linux/ieee80211.h */ | |
720 | switch (params.cipher) { | |
721 | case WLAN_CIPHER_SUITE_WEP40: | |
722 | if (params.key_len != 5) | |
723 | return -EINVAL; | |
724 | break; | |
725 | case WLAN_CIPHER_SUITE_TKIP: | |
726 | if (params.key_len != 32) | |
727 | return -EINVAL; | |
728 | break; | |
729 | case WLAN_CIPHER_SUITE_CCMP: | |
730 | if (params.key_len != 16) | |
731 | return -EINVAL; | |
732 | break; | |
733 | case WLAN_CIPHER_SUITE_WEP104: | |
734 | if (params.key_len != 13) | |
735 | return -EINVAL; | |
736 | break; | |
737 | default: | |
738 | return -EINVAL; | |
739 | } | |
740 | ||
741 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
742 | if (err) | |
743 | return err; | |
744 | ||
745 | if (!drv->ops->add_key) { | |
746 | err = -EOPNOTSUPP; | |
747 | goto out; | |
748 | } | |
749 | ||
750 | rtnl_lock(); | |
751 | err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, ¶ms); | |
752 | rtnl_unlock(); | |
753 | ||
754 | out: | |
755 | cfg80211_put_dev(drv); | |
756 | dev_put(dev); | |
757 | return err; | |
758 | } | |
759 | ||
760 | static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) | |
761 | { | |
762 | struct cfg80211_registered_device *drv; | |
763 | int err; | |
764 | struct net_device *dev; | |
765 | u8 key_idx = 0; | |
766 | u8 *mac_addr = NULL; | |
767 | ||
768 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
769 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
770 | ||
771 | if (key_idx > 3) | |
772 | return -EINVAL; | |
773 | ||
774 | if (info->attrs[NL80211_ATTR_MAC]) | |
775 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
776 | ||
777 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
778 | if (err) | |
779 | return err; | |
780 | ||
781 | if (!drv->ops->del_key) { | |
782 | err = -EOPNOTSUPP; | |
783 | goto out; | |
784 | } | |
785 | ||
786 | rtnl_lock(); | |
787 | err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr); | |
788 | rtnl_unlock(); | |
789 | ||
790 | out: | |
791 | cfg80211_put_dev(drv); | |
792 | dev_put(dev); | |
793 | return err; | |
794 | } | |
795 | ||
796 | static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) | |
797 | { | |
798 | int (*call)(struct wiphy *wiphy, struct net_device *dev, | |
799 | struct beacon_parameters *info); | |
800 | struct cfg80211_registered_device *drv; | |
801 | int err; | |
802 | struct net_device *dev; | |
803 | struct beacon_parameters params; | |
804 | int haveinfo = 0; | |
805 | ||
806 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
807 | if (err) | |
808 | return err; | |
809 | ||
810 | switch (info->genlhdr->cmd) { | |
811 | case NL80211_CMD_NEW_BEACON: | |
812 | /* these are required for NEW_BEACON */ | |
813 | if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || | |
814 | !info->attrs[NL80211_ATTR_DTIM_PERIOD] || | |
815 | !info->attrs[NL80211_ATTR_BEACON_HEAD]) { | |
816 | err = -EINVAL; | |
817 | goto out; | |
818 | } | |
819 | ||
820 | call = drv->ops->add_beacon; | |
821 | break; | |
822 | case NL80211_CMD_SET_BEACON: | |
823 | call = drv->ops->set_beacon; | |
824 | break; | |
825 | default: | |
826 | WARN_ON(1); | |
827 | err = -EOPNOTSUPP; | |
828 | goto out; | |
829 | } | |
830 | ||
831 | if (!call) { | |
832 | err = -EOPNOTSUPP; | |
833 | goto out; | |
834 | } | |
835 | ||
836 | memset(¶ms, 0, sizeof(params)); | |
837 | ||
838 | if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { | |
839 | params.interval = | |
840 | nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); | |
841 | haveinfo = 1; | |
842 | } | |
843 | ||
844 | if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { | |
845 | params.dtim_period = | |
846 | nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); | |
847 | haveinfo = 1; | |
848 | } | |
849 | ||
850 | if (info->attrs[NL80211_ATTR_BEACON_HEAD]) { | |
851 | params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]); | |
852 | params.head_len = | |
853 | nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]); | |
854 | haveinfo = 1; | |
855 | } | |
856 | ||
857 | if (info->attrs[NL80211_ATTR_BEACON_TAIL]) { | |
858 | params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]); | |
859 | params.tail_len = | |
860 | nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]); | |
861 | haveinfo = 1; | |
862 | } | |
863 | ||
864 | if (!haveinfo) { | |
865 | err = -EINVAL; | |
866 | goto out; | |
867 | } | |
868 | ||
869 | rtnl_lock(); | |
870 | err = call(&drv->wiphy, dev, ¶ms); | |
871 | rtnl_unlock(); | |
872 | ||
873 | out: | |
874 | cfg80211_put_dev(drv); | |
875 | dev_put(dev); | |
876 | return err; | |
877 | } | |
878 | ||
879 | static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) | |
880 | { | |
881 | struct cfg80211_registered_device *drv; | |
882 | int err; | |
883 | struct net_device *dev; | |
884 | ||
885 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
886 | if (err) | |
887 | return err; | |
888 | ||
889 | if (!drv->ops->del_beacon) { | |
890 | err = -EOPNOTSUPP; | |
891 | goto out; | |
892 | } | |
893 | ||
894 | rtnl_lock(); | |
895 | err = drv->ops->del_beacon(&drv->wiphy, dev); | |
896 | rtnl_unlock(); | |
897 | ||
898 | out: | |
899 | cfg80211_put_dev(drv); | |
900 | dev_put(dev); | |
901 | return err; | |
902 | } | |
903 | ||
904 | static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { | |
905 | [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, | |
906 | [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, | |
907 | [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, | |
908 | }; | |
909 | ||
910 | static int parse_station_flags(struct nlattr *nla, u32 *staflags) | |
911 | { | |
912 | struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; | |
913 | int flag; | |
914 | ||
915 | *staflags = 0; | |
916 | ||
917 | if (!nla) | |
918 | return 0; | |
919 | ||
920 | if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, | |
921 | nla, sta_flags_policy)) | |
922 | return -EINVAL; | |
923 | ||
924 | *staflags = STATION_FLAG_CHANGED; | |
925 | ||
926 | for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) | |
927 | if (flags[flag]) | |
928 | *staflags |= (1<<flag); | |
929 | ||
930 | return 0; | |
931 | } | |
932 | ||
933 | static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, | |
934 | int flags, struct net_device *dev, | |
935 | u8 *mac_addr, struct station_info *sinfo) | |
936 | { | |
937 | void *hdr; | |
938 | struct nlattr *sinfoattr; | |
939 | ||
940 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); | |
941 | if (!hdr) | |
942 | return -1; | |
943 | ||
944 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
945 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); | |
946 | ||
947 | sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); | |
948 | if (!sinfoattr) | |
949 | goto nla_put_failure; | |
950 | if (sinfo->filled & STATION_INFO_INACTIVE_TIME) | |
951 | NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME, | |
952 | sinfo->inactive_time); | |
953 | if (sinfo->filled & STATION_INFO_RX_BYTES) | |
954 | NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES, | |
955 | sinfo->rx_bytes); | |
956 | if (sinfo->filled & STATION_INFO_TX_BYTES) | |
957 | NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES, | |
958 | sinfo->tx_bytes); | |
959 | if (sinfo->filled & STATION_INFO_LLID) | |
960 | NLA_PUT_U16(msg, NL80211_STA_INFO_LLID, | |
961 | sinfo->llid); | |
962 | if (sinfo->filled & STATION_INFO_PLID) | |
963 | NLA_PUT_U16(msg, NL80211_STA_INFO_PLID, | |
964 | sinfo->plid); | |
965 | if (sinfo->filled & STATION_INFO_PLINK_STATE) | |
966 | NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE, | |
967 | sinfo->plink_state); | |
968 | ||
969 | nla_nest_end(msg, sinfoattr); | |
970 | ||
971 | return genlmsg_end(msg, hdr); | |
972 | ||
973 | nla_put_failure: | |
974 | genlmsg_cancel(msg, hdr); | |
975 | return -EMSGSIZE; | |
976 | } | |
977 | ||
978 | static int nl80211_dump_station(struct sk_buff *skb, | |
979 | struct netlink_callback *cb) | |
980 | { | |
981 | struct station_info sinfo; | |
982 | struct cfg80211_registered_device *dev; | |
983 | struct net_device *netdev; | |
984 | u8 mac_addr[ETH_ALEN]; | |
985 | int ifidx = cb->args[0]; | |
986 | int sta_idx = cb->args[1]; | |
987 | int err; | |
988 | ||
989 | if (!ifidx) { | |
990 | err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, | |
991 | nl80211_fam.attrbuf, nl80211_fam.maxattr, | |
992 | nl80211_policy); | |
993 | if (err) | |
994 | return err; | |
995 | ||
996 | if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) | |
997 | return -EINVAL; | |
998 | ||
999 | ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); | |
1000 | if (!ifidx) | |
1001 | return -EINVAL; | |
1002 | } | |
1003 | ||
1004 | netdev = dev_get_by_index(&init_net, ifidx); | |
1005 | if (!netdev) | |
1006 | return -ENODEV; | |
1007 | ||
1008 | dev = cfg80211_get_dev_from_ifindex(ifidx); | |
1009 | if (IS_ERR(dev)) { | |
1010 | err = PTR_ERR(dev); | |
1011 | goto out_put_netdev; | |
1012 | } | |
1013 | ||
1014 | if (!dev->ops->dump_station) { | |
1015 | err = -ENOSYS; | |
1016 | goto out_err; | |
1017 | } | |
1018 | ||
1019 | rtnl_lock(); | |
1020 | ||
1021 | while (1) { | |
1022 | err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx, | |
1023 | mac_addr, &sinfo); | |
1024 | if (err == -ENOENT) | |
1025 | break; | |
1026 | if (err) | |
1027 | goto out_err_rtnl; | |
1028 | ||
1029 | if (nl80211_send_station(skb, | |
1030 | NETLINK_CB(cb->skb).pid, | |
1031 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
1032 | netdev, mac_addr, | |
1033 | &sinfo) < 0) | |
1034 | goto out; | |
1035 | ||
1036 | sta_idx++; | |
1037 | } | |
1038 | ||
1039 | ||
1040 | out: | |
1041 | cb->args[1] = sta_idx; | |
1042 | err = skb->len; | |
1043 | out_err_rtnl: | |
1044 | rtnl_unlock(); | |
1045 | out_err: | |
1046 | cfg80211_put_dev(dev); | |
1047 | out_put_netdev: | |
1048 | dev_put(netdev); | |
1049 | ||
1050 | return err; | |
1051 | } | |
1052 | ||
1053 | static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) | |
1054 | { | |
1055 | struct cfg80211_registered_device *drv; | |
1056 | int err; | |
1057 | struct net_device *dev; | |
1058 | struct station_info sinfo; | |
1059 | struct sk_buff *msg; | |
1060 | u8 *mac_addr = NULL; | |
1061 | ||
1062 | memset(&sinfo, 0, sizeof(sinfo)); | |
1063 | ||
1064 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1065 | return -EINVAL; | |
1066 | ||
1067 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1068 | ||
1069 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1070 | if (err) | |
1071 | return err; | |
1072 | ||
1073 | if (!drv->ops->get_station) { | |
1074 | err = -EOPNOTSUPP; | |
1075 | goto out; | |
1076 | } | |
1077 | ||
1078 | rtnl_lock(); | |
1079 | err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo); | |
1080 | rtnl_unlock(); | |
1081 | ||
1082 | if (err) | |
1083 | goto out; | |
1084 | ||
1085 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1086 | if (!msg) | |
1087 | goto out; | |
1088 | ||
1089 | if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0, | |
1090 | dev, mac_addr, &sinfo) < 0) | |
1091 | goto out_free; | |
1092 | ||
1093 | err = genlmsg_unicast(msg, info->snd_pid); | |
1094 | goto out; | |
1095 | ||
1096 | out_free: | |
1097 | nlmsg_free(msg); | |
1098 | ||
1099 | out: | |
1100 | cfg80211_put_dev(drv); | |
1101 | dev_put(dev); | |
1102 | return err; | |
1103 | } | |
1104 | ||
1105 | /* | |
1106 | * Get vlan interface making sure it is on the right wiphy. | |
1107 | */ | |
1108 | static int get_vlan(struct nlattr *vlanattr, | |
1109 | struct cfg80211_registered_device *rdev, | |
1110 | struct net_device **vlan) | |
1111 | { | |
1112 | *vlan = NULL; | |
1113 | ||
1114 | if (vlanattr) { | |
1115 | *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr)); | |
1116 | if (!*vlan) | |
1117 | return -ENODEV; | |
1118 | if (!(*vlan)->ieee80211_ptr) | |
1119 | return -EINVAL; | |
1120 | if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy) | |
1121 | return -EINVAL; | |
1122 | } | |
1123 | return 0; | |
1124 | } | |
1125 | ||
1126 | static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) | |
1127 | { | |
1128 | struct cfg80211_registered_device *drv; | |
1129 | int err; | |
1130 | struct net_device *dev; | |
1131 | struct station_parameters params; | |
1132 | u8 *mac_addr = NULL; | |
1133 | ||
1134 | memset(¶ms, 0, sizeof(params)); | |
1135 | ||
1136 | params.listen_interval = -1; | |
1137 | ||
1138 | if (info->attrs[NL80211_ATTR_STA_AID]) | |
1139 | return -EINVAL; | |
1140 | ||
1141 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1142 | return -EINVAL; | |
1143 | ||
1144 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1145 | ||
1146 | if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { | |
1147 | params.supported_rates = | |
1148 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1149 | params.supported_rates_len = | |
1150 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1151 | } | |
1152 | ||
1153 | if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) | |
1154 | params.listen_interval = | |
1155 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); | |
1156 | ||
1157 | if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) | |
1158 | params.ht_capa = | |
1159 | nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); | |
1160 | ||
1161 | if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], | |
1162 | ¶ms.station_flags)) | |
1163 | return -EINVAL; | |
1164 | ||
1165 | if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) | |
1166 | params.plink_action = | |
1167 | nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); | |
1168 | ||
1169 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1170 | if (err) | |
1171 | return err; | |
1172 | ||
1173 | err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); | |
1174 | if (err) | |
1175 | goto out; | |
1176 | ||
1177 | if (!drv->ops->change_station) { | |
1178 | err = -EOPNOTSUPP; | |
1179 | goto out; | |
1180 | } | |
1181 | ||
1182 | rtnl_lock(); | |
1183 | err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, ¶ms); | |
1184 | rtnl_unlock(); | |
1185 | ||
1186 | out: | |
1187 | if (params.vlan) | |
1188 | dev_put(params.vlan); | |
1189 | cfg80211_put_dev(drv); | |
1190 | dev_put(dev); | |
1191 | return err; | |
1192 | } | |
1193 | ||
1194 | static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) | |
1195 | { | |
1196 | struct cfg80211_registered_device *drv; | |
1197 | int err; | |
1198 | struct net_device *dev; | |
1199 | struct station_parameters params; | |
1200 | u8 *mac_addr = NULL; | |
1201 | ||
1202 | memset(¶ms, 0, sizeof(params)); | |
1203 | ||
1204 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1205 | return -EINVAL; | |
1206 | ||
1207 | if (!info->attrs[NL80211_ATTR_STA_AID]) | |
1208 | return -EINVAL; | |
1209 | ||
1210 | if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) | |
1211 | return -EINVAL; | |
1212 | ||
1213 | if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) | |
1214 | return -EINVAL; | |
1215 | ||
1216 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1217 | params.supported_rates = | |
1218 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1219 | params.supported_rates_len = | |
1220 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1221 | params.listen_interval = | |
1222 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); | |
1223 | params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); | |
1224 | if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) | |
1225 | params.ht_capa = | |
1226 | nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); | |
1227 | ||
1228 | if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], | |
1229 | ¶ms.station_flags)) | |
1230 | return -EINVAL; | |
1231 | ||
1232 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1233 | if (err) | |
1234 | return err; | |
1235 | ||
1236 | err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); | |
1237 | if (err) | |
1238 | goto out; | |
1239 | ||
1240 | if (!drv->ops->add_station) { | |
1241 | err = -EOPNOTSUPP; | |
1242 | goto out; | |
1243 | } | |
1244 | ||
1245 | rtnl_lock(); | |
1246 | err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, ¶ms); | |
1247 | rtnl_unlock(); | |
1248 | ||
1249 | out: | |
1250 | if (params.vlan) | |
1251 | dev_put(params.vlan); | |
1252 | cfg80211_put_dev(drv); | |
1253 | dev_put(dev); | |
1254 | return err; | |
1255 | } | |
1256 | ||
1257 | static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) | |
1258 | { | |
1259 | struct cfg80211_registered_device *drv; | |
1260 | int err; | |
1261 | struct net_device *dev; | |
1262 | u8 *mac_addr = NULL; | |
1263 | ||
1264 | if (info->attrs[NL80211_ATTR_MAC]) | |
1265 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1266 | ||
1267 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1268 | if (err) | |
1269 | return err; | |
1270 | ||
1271 | if (!drv->ops->del_station) { | |
1272 | err = -EOPNOTSUPP; | |
1273 | goto out; | |
1274 | } | |
1275 | ||
1276 | rtnl_lock(); | |
1277 | err = drv->ops->del_station(&drv->wiphy, dev, mac_addr); | |
1278 | rtnl_unlock(); | |
1279 | ||
1280 | out: | |
1281 | cfg80211_put_dev(drv); | |
1282 | dev_put(dev); | |
1283 | return err; | |
1284 | } | |
1285 | ||
1286 | static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq, | |
1287 | int flags, struct net_device *dev, | |
1288 | u8 *dst, u8 *next_hop, | |
1289 | struct mpath_info *pinfo) | |
1290 | { | |
1291 | void *hdr; | |
1292 | struct nlattr *pinfoattr; | |
1293 | ||
1294 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); | |
1295 | if (!hdr) | |
1296 | return -1; | |
1297 | ||
1298 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
1299 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); | |
1300 | NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop); | |
1301 | ||
1302 | pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); | |
1303 | if (!pinfoattr) | |
1304 | goto nla_put_failure; | |
1305 | if (pinfo->filled & MPATH_INFO_FRAME_QLEN) | |
1306 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN, | |
1307 | pinfo->frame_qlen); | |
1308 | if (pinfo->filled & MPATH_INFO_DSN) | |
1309 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN, | |
1310 | pinfo->dsn); | |
1311 | if (pinfo->filled & MPATH_INFO_METRIC) | |
1312 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC, | |
1313 | pinfo->metric); | |
1314 | if (pinfo->filled & MPATH_INFO_EXPTIME) | |
1315 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME, | |
1316 | pinfo->exptime); | |
1317 | if (pinfo->filled & MPATH_INFO_FLAGS) | |
1318 | NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS, | |
1319 | pinfo->flags); | |
1320 | if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) | |
1321 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, | |
1322 | pinfo->discovery_timeout); | |
1323 | if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) | |
1324 | NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, | |
1325 | pinfo->discovery_retries); | |
1326 | ||
1327 | nla_nest_end(msg, pinfoattr); | |
1328 | ||
1329 | return genlmsg_end(msg, hdr); | |
1330 | ||
1331 | nla_put_failure: | |
1332 | genlmsg_cancel(msg, hdr); | |
1333 | return -EMSGSIZE; | |
1334 | } | |
1335 | ||
1336 | static int nl80211_dump_mpath(struct sk_buff *skb, | |
1337 | struct netlink_callback *cb) | |
1338 | { | |
1339 | struct mpath_info pinfo; | |
1340 | struct cfg80211_registered_device *dev; | |
1341 | struct net_device *netdev; | |
1342 | u8 dst[ETH_ALEN]; | |
1343 | u8 next_hop[ETH_ALEN]; | |
1344 | int ifidx = cb->args[0]; | |
1345 | int path_idx = cb->args[1]; | |
1346 | int err; | |
1347 | ||
1348 | if (!ifidx) { | |
1349 | err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, | |
1350 | nl80211_fam.attrbuf, nl80211_fam.maxattr, | |
1351 | nl80211_policy); | |
1352 | if (err) | |
1353 | return err; | |
1354 | ||
1355 | if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) | |
1356 | return -EINVAL; | |
1357 | ||
1358 | ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); | |
1359 | if (!ifidx) | |
1360 | return -EINVAL; | |
1361 | } | |
1362 | ||
1363 | netdev = dev_get_by_index(&init_net, ifidx); | |
1364 | if (!netdev) | |
1365 | return -ENODEV; | |
1366 | ||
1367 | dev = cfg80211_get_dev_from_ifindex(ifidx); | |
1368 | if (IS_ERR(dev)) { | |
1369 | err = PTR_ERR(dev); | |
1370 | goto out_put_netdev; | |
1371 | } | |
1372 | ||
1373 | if (!dev->ops->dump_mpath) { | |
1374 | err = -ENOSYS; | |
1375 | goto out_err; | |
1376 | } | |
1377 | ||
1378 | rtnl_lock(); | |
1379 | ||
1380 | while (1) { | |
1381 | err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx, | |
1382 | dst, next_hop, &pinfo); | |
1383 | if (err == -ENOENT) | |
1384 | break; | |
1385 | if (err) | |
1386 | goto out_err_rtnl; | |
1387 | ||
1388 | if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid, | |
1389 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
1390 | netdev, dst, next_hop, | |
1391 | &pinfo) < 0) | |
1392 | goto out; | |
1393 | ||
1394 | path_idx++; | |
1395 | } | |
1396 | ||
1397 | ||
1398 | out: | |
1399 | cb->args[1] = path_idx; | |
1400 | err = skb->len; | |
1401 | out_err_rtnl: | |
1402 | rtnl_unlock(); | |
1403 | out_err: | |
1404 | cfg80211_put_dev(dev); | |
1405 | out_put_netdev: | |
1406 | dev_put(netdev); | |
1407 | ||
1408 | return err; | |
1409 | } | |
1410 | ||
1411 | static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) | |
1412 | { | |
1413 | struct cfg80211_registered_device *drv; | |
1414 | int err; | |
1415 | struct net_device *dev; | |
1416 | struct mpath_info pinfo; | |
1417 | struct sk_buff *msg; | |
1418 | u8 *dst = NULL; | |
1419 | u8 next_hop[ETH_ALEN]; | |
1420 | ||
1421 | memset(&pinfo, 0, sizeof(pinfo)); | |
1422 | ||
1423 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1424 | return -EINVAL; | |
1425 | ||
1426 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1427 | ||
1428 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1429 | if (err) | |
1430 | return err; | |
1431 | ||
1432 | if (!drv->ops->get_mpath) { | |
1433 | err = -EOPNOTSUPP; | |
1434 | goto out; | |
1435 | } | |
1436 | ||
1437 | rtnl_lock(); | |
1438 | err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo); | |
1439 | rtnl_unlock(); | |
1440 | ||
1441 | if (err) | |
1442 | goto out; | |
1443 | ||
1444 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1445 | if (!msg) | |
1446 | goto out; | |
1447 | ||
1448 | if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0, | |
1449 | dev, dst, next_hop, &pinfo) < 0) | |
1450 | goto out_free; | |
1451 | ||
1452 | err = genlmsg_unicast(msg, info->snd_pid); | |
1453 | goto out; | |
1454 | ||
1455 | out_free: | |
1456 | nlmsg_free(msg); | |
1457 | ||
1458 | out: | |
1459 | cfg80211_put_dev(drv); | |
1460 | dev_put(dev); | |
1461 | return err; | |
1462 | } | |
1463 | ||
1464 | static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) | |
1465 | { | |
1466 | struct cfg80211_registered_device *drv; | |
1467 | int err; | |
1468 | struct net_device *dev; | |
1469 | u8 *dst = NULL; | |
1470 | u8 *next_hop = NULL; | |
1471 | ||
1472 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1473 | return -EINVAL; | |
1474 | ||
1475 | if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) | |
1476 | return -EINVAL; | |
1477 | ||
1478 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1479 | next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); | |
1480 | ||
1481 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1482 | if (err) | |
1483 | return err; | |
1484 | ||
1485 | if (!drv->ops->change_mpath) { | |
1486 | err = -EOPNOTSUPP; | |
1487 | goto out; | |
1488 | } | |
1489 | ||
1490 | rtnl_lock(); | |
1491 | err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop); | |
1492 | rtnl_unlock(); | |
1493 | ||
1494 | out: | |
1495 | cfg80211_put_dev(drv); | |
1496 | dev_put(dev); | |
1497 | return err; | |
1498 | } | |
1499 | static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) | |
1500 | { | |
1501 | struct cfg80211_registered_device *drv; | |
1502 | int err; | |
1503 | struct net_device *dev; | |
1504 | u8 *dst = NULL; | |
1505 | u8 *next_hop = NULL; | |
1506 | ||
1507 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1508 | return -EINVAL; | |
1509 | ||
1510 | if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) | |
1511 | return -EINVAL; | |
1512 | ||
1513 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1514 | next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); | |
1515 | ||
1516 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1517 | if (err) | |
1518 | return err; | |
1519 | ||
1520 | if (!drv->ops->add_mpath) { | |
1521 | err = -EOPNOTSUPP; | |
1522 | goto out; | |
1523 | } | |
1524 | ||
1525 | rtnl_lock(); | |
1526 | err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop); | |
1527 | rtnl_unlock(); | |
1528 | ||
1529 | out: | |
1530 | cfg80211_put_dev(drv); | |
1531 | dev_put(dev); | |
1532 | return err; | |
1533 | } | |
1534 | ||
1535 | static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) | |
1536 | { | |
1537 | struct cfg80211_registered_device *drv; | |
1538 | int err; | |
1539 | struct net_device *dev; | |
1540 | u8 *dst = NULL; | |
1541 | ||
1542 | if (info->attrs[NL80211_ATTR_MAC]) | |
1543 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1544 | ||
1545 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1546 | if (err) | |
1547 | return err; | |
1548 | ||
1549 | if (!drv->ops->del_mpath) { | |
1550 | err = -EOPNOTSUPP; | |
1551 | goto out; | |
1552 | } | |
1553 | ||
1554 | rtnl_lock(); | |
1555 | err = drv->ops->del_mpath(&drv->wiphy, dev, dst); | |
1556 | rtnl_unlock(); | |
1557 | ||
1558 | out: | |
1559 | cfg80211_put_dev(drv); | |
1560 | dev_put(dev); | |
1561 | return err; | |
1562 | } | |
1563 | ||
1564 | static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) | |
1565 | { | |
1566 | struct cfg80211_registered_device *drv; | |
1567 | int err; | |
1568 | struct net_device *dev; | |
1569 | struct bss_parameters params; | |
1570 | ||
1571 | memset(¶ms, 0, sizeof(params)); | |
1572 | /* default to not changing parameters */ | |
1573 | params.use_cts_prot = -1; | |
1574 | params.use_short_preamble = -1; | |
1575 | params.use_short_slot_time = -1; | |
1576 | ||
1577 | if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) | |
1578 | params.use_cts_prot = | |
1579 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); | |
1580 | if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) | |
1581 | params.use_short_preamble = | |
1582 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); | |
1583 | if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) | |
1584 | params.use_short_slot_time = | |
1585 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); | |
1586 | ||
1587 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1588 | if (err) | |
1589 | return err; | |
1590 | ||
1591 | if (!drv->ops->change_bss) { | |
1592 | err = -EOPNOTSUPP; | |
1593 | goto out; | |
1594 | } | |
1595 | ||
1596 | rtnl_lock(); | |
1597 | err = drv->ops->change_bss(&drv->wiphy, dev, ¶ms); | |
1598 | rtnl_unlock(); | |
1599 | ||
1600 | out: | |
1601 | cfg80211_put_dev(drv); | |
1602 | dev_put(dev); | |
1603 | return err; | |
1604 | } | |
1605 | ||
1606 | static const struct nla_policy | |
1607 | reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { | |
1608 | [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, | |
1609 | [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, | |
1610 | [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, | |
1611 | [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, | |
1612 | [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, | |
1613 | [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, | |
1614 | }; | |
1615 | ||
1616 | static int parse_reg_rule(struct nlattr *tb[], | |
1617 | struct ieee80211_reg_rule *reg_rule) | |
1618 | { | |
1619 | struct ieee80211_freq_range *freq_range = ®_rule->freq_range; | |
1620 | struct ieee80211_power_rule *power_rule = ®_rule->power_rule; | |
1621 | ||
1622 | if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) | |
1623 | return -EINVAL; | |
1624 | if (!tb[NL80211_ATTR_FREQ_RANGE_START]) | |
1625 | return -EINVAL; | |
1626 | if (!tb[NL80211_ATTR_FREQ_RANGE_END]) | |
1627 | return -EINVAL; | |
1628 | if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) | |
1629 | return -EINVAL; | |
1630 | if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) | |
1631 | return -EINVAL; | |
1632 | ||
1633 | reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); | |
1634 | ||
1635 | freq_range->start_freq_khz = | |
1636 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); | |
1637 | freq_range->end_freq_khz = | |
1638 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); | |
1639 | freq_range->max_bandwidth_khz = | |
1640 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); | |
1641 | ||
1642 | power_rule->max_eirp = | |
1643 | nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); | |
1644 | ||
1645 | if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) | |
1646 | power_rule->max_antenna_gain = | |
1647 | nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); | |
1648 | ||
1649 | return 0; | |
1650 | } | |
1651 | ||
1652 | static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) | |
1653 | { | |
1654 | int r; | |
1655 | char *data = NULL; | |
1656 | ||
1657 | if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) | |
1658 | return -EINVAL; | |
1659 | ||
1660 | data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); | |
1661 | ||
1662 | #ifdef CONFIG_WIRELESS_OLD_REGULATORY | |
1663 | /* We ignore world regdom requests with the old regdom setup */ | |
1664 | if (is_world_regdom(data)) | |
1665 | return -EINVAL; | |
1666 | #endif | |
1667 | mutex_lock(&cfg80211_drv_mutex); | |
1668 | r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data, NULL); | |
1669 | mutex_unlock(&cfg80211_drv_mutex); | |
1670 | return r; | |
1671 | } | |
1672 | ||
1673 | static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) | |
1674 | { | |
1675 | struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; | |
1676 | struct nlattr *nl_reg_rule; | |
1677 | char *alpha2 = NULL; | |
1678 | int rem_reg_rules = 0, r = 0; | |
1679 | u32 num_rules = 0, rule_idx = 0, size_of_regd; | |
1680 | struct ieee80211_regdomain *rd = NULL; | |
1681 | ||
1682 | if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) | |
1683 | return -EINVAL; | |
1684 | ||
1685 | if (!info->attrs[NL80211_ATTR_REG_RULES]) | |
1686 | return -EINVAL; | |
1687 | ||
1688 | alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); | |
1689 | ||
1690 | nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], | |
1691 | rem_reg_rules) { | |
1692 | num_rules++; | |
1693 | if (num_rules > NL80211_MAX_SUPP_REG_RULES) | |
1694 | goto bad_reg; | |
1695 | } | |
1696 | ||
1697 | if (!reg_is_valid_request(alpha2)) | |
1698 | return -EINVAL; | |
1699 | ||
1700 | size_of_regd = sizeof(struct ieee80211_regdomain) + | |
1701 | (num_rules * sizeof(struct ieee80211_reg_rule)); | |
1702 | ||
1703 | rd = kzalloc(size_of_regd, GFP_KERNEL); | |
1704 | if (!rd) | |
1705 | return -ENOMEM; | |
1706 | ||
1707 | rd->n_reg_rules = num_rules; | |
1708 | rd->alpha2[0] = alpha2[0]; | |
1709 | rd->alpha2[1] = alpha2[1]; | |
1710 | ||
1711 | nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], | |
1712 | rem_reg_rules) { | |
1713 | nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, | |
1714 | nla_data(nl_reg_rule), nla_len(nl_reg_rule), | |
1715 | reg_rule_policy); | |
1716 | r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); | |
1717 | if (r) | |
1718 | goto bad_reg; | |
1719 | ||
1720 | rule_idx++; | |
1721 | ||
1722 | if (rule_idx > NL80211_MAX_SUPP_REG_RULES) | |
1723 | goto bad_reg; | |
1724 | } | |
1725 | ||
1726 | BUG_ON(rule_idx != num_rules); | |
1727 | ||
1728 | mutex_lock(&cfg80211_drv_mutex); | |
1729 | r = set_regdom(rd); | |
1730 | mutex_unlock(&cfg80211_drv_mutex); | |
1731 | if (r) | |
1732 | goto bad_reg; | |
1733 | ||
1734 | return r; | |
1735 | ||
1736 | bad_reg: | |
1737 | kfree(rd); | |
1738 | return -EINVAL; | |
1739 | } | |
1740 | ||
1741 | static struct genl_ops nl80211_ops[] = { | |
1742 | { | |
1743 | .cmd = NL80211_CMD_GET_WIPHY, | |
1744 | .doit = nl80211_get_wiphy, | |
1745 | .dumpit = nl80211_dump_wiphy, | |
1746 | .policy = nl80211_policy, | |
1747 | /* can be retrieved by unprivileged users */ | |
1748 | }, | |
1749 | { | |
1750 | .cmd = NL80211_CMD_SET_WIPHY, | |
1751 | .doit = nl80211_set_wiphy, | |
1752 | .policy = nl80211_policy, | |
1753 | .flags = GENL_ADMIN_PERM, | |
1754 | }, | |
1755 | { | |
1756 | .cmd = NL80211_CMD_GET_INTERFACE, | |
1757 | .doit = nl80211_get_interface, | |
1758 | .dumpit = nl80211_dump_interface, | |
1759 | .policy = nl80211_policy, | |
1760 | /* can be retrieved by unprivileged users */ | |
1761 | }, | |
1762 | { | |
1763 | .cmd = NL80211_CMD_SET_INTERFACE, | |
1764 | .doit = nl80211_set_interface, | |
1765 | .policy = nl80211_policy, | |
1766 | .flags = GENL_ADMIN_PERM, | |
1767 | }, | |
1768 | { | |
1769 | .cmd = NL80211_CMD_NEW_INTERFACE, | |
1770 | .doit = nl80211_new_interface, | |
1771 | .policy = nl80211_policy, | |
1772 | .flags = GENL_ADMIN_PERM, | |
1773 | }, | |
1774 | { | |
1775 | .cmd = NL80211_CMD_DEL_INTERFACE, | |
1776 | .doit = nl80211_del_interface, | |
1777 | .policy = nl80211_policy, | |
1778 | .flags = GENL_ADMIN_PERM, | |
1779 | }, | |
1780 | { | |
1781 | .cmd = NL80211_CMD_GET_KEY, | |
1782 | .doit = nl80211_get_key, | |
1783 | .policy = nl80211_policy, | |
1784 | .flags = GENL_ADMIN_PERM, | |
1785 | }, | |
1786 | { | |
1787 | .cmd = NL80211_CMD_SET_KEY, | |
1788 | .doit = nl80211_set_key, | |
1789 | .policy = nl80211_policy, | |
1790 | .flags = GENL_ADMIN_PERM, | |
1791 | }, | |
1792 | { | |
1793 | .cmd = NL80211_CMD_NEW_KEY, | |
1794 | .doit = nl80211_new_key, | |
1795 | .policy = nl80211_policy, | |
1796 | .flags = GENL_ADMIN_PERM, | |
1797 | }, | |
1798 | { | |
1799 | .cmd = NL80211_CMD_DEL_KEY, | |
1800 | .doit = nl80211_del_key, | |
1801 | .policy = nl80211_policy, | |
1802 | .flags = GENL_ADMIN_PERM, | |
1803 | }, | |
1804 | { | |
1805 | .cmd = NL80211_CMD_SET_BEACON, | |
1806 | .policy = nl80211_policy, | |
1807 | .flags = GENL_ADMIN_PERM, | |
1808 | .doit = nl80211_addset_beacon, | |
1809 | }, | |
1810 | { | |
1811 | .cmd = NL80211_CMD_NEW_BEACON, | |
1812 | .policy = nl80211_policy, | |
1813 | .flags = GENL_ADMIN_PERM, | |
1814 | .doit = nl80211_addset_beacon, | |
1815 | }, | |
1816 | { | |
1817 | .cmd = NL80211_CMD_DEL_BEACON, | |
1818 | .policy = nl80211_policy, | |
1819 | .flags = GENL_ADMIN_PERM, | |
1820 | .doit = nl80211_del_beacon, | |
1821 | }, | |
1822 | { | |
1823 | .cmd = NL80211_CMD_GET_STATION, | |
1824 | .doit = nl80211_get_station, | |
1825 | .dumpit = nl80211_dump_station, | |
1826 | .policy = nl80211_policy, | |
1827 | .flags = GENL_ADMIN_PERM, | |
1828 | }, | |
1829 | { | |
1830 | .cmd = NL80211_CMD_SET_STATION, | |
1831 | .doit = nl80211_set_station, | |
1832 | .policy = nl80211_policy, | |
1833 | .flags = GENL_ADMIN_PERM, | |
1834 | }, | |
1835 | { | |
1836 | .cmd = NL80211_CMD_NEW_STATION, | |
1837 | .doit = nl80211_new_station, | |
1838 | .policy = nl80211_policy, | |
1839 | .flags = GENL_ADMIN_PERM, | |
1840 | }, | |
1841 | { | |
1842 | .cmd = NL80211_CMD_DEL_STATION, | |
1843 | .doit = nl80211_del_station, | |
1844 | .policy = nl80211_policy, | |
1845 | .flags = GENL_ADMIN_PERM, | |
1846 | }, | |
1847 | { | |
1848 | .cmd = NL80211_CMD_GET_MPATH, | |
1849 | .doit = nl80211_get_mpath, | |
1850 | .dumpit = nl80211_dump_mpath, | |
1851 | .policy = nl80211_policy, | |
1852 | .flags = GENL_ADMIN_PERM, | |
1853 | }, | |
1854 | { | |
1855 | .cmd = NL80211_CMD_SET_MPATH, | |
1856 | .doit = nl80211_set_mpath, | |
1857 | .policy = nl80211_policy, | |
1858 | .flags = GENL_ADMIN_PERM, | |
1859 | }, | |
1860 | { | |
1861 | .cmd = NL80211_CMD_NEW_MPATH, | |
1862 | .doit = nl80211_new_mpath, | |
1863 | .policy = nl80211_policy, | |
1864 | .flags = GENL_ADMIN_PERM, | |
1865 | }, | |
1866 | { | |
1867 | .cmd = NL80211_CMD_DEL_MPATH, | |
1868 | .doit = nl80211_del_mpath, | |
1869 | .policy = nl80211_policy, | |
1870 | .flags = GENL_ADMIN_PERM, | |
1871 | }, | |
1872 | { | |
1873 | .cmd = NL80211_CMD_SET_BSS, | |
1874 | .doit = nl80211_set_bss, | |
1875 | .policy = nl80211_policy, | |
1876 | .flags = GENL_ADMIN_PERM, | |
1877 | }, | |
1878 | { | |
1879 | .cmd = NL80211_CMD_SET_REG, | |
1880 | .doit = nl80211_set_reg, | |
1881 | .policy = nl80211_policy, | |
1882 | .flags = GENL_ADMIN_PERM, | |
1883 | }, | |
1884 | { | |
1885 | .cmd = NL80211_CMD_REQ_SET_REG, | |
1886 | .doit = nl80211_req_set_reg, | |
1887 | .policy = nl80211_policy, | |
1888 | .flags = GENL_ADMIN_PERM, | |
1889 | }, | |
1890 | }; | |
1891 | ||
1892 | /* multicast groups */ | |
1893 | static struct genl_multicast_group nl80211_config_mcgrp = { | |
1894 | .name = "config", | |
1895 | }; | |
1896 | ||
1897 | /* notification functions */ | |
1898 | ||
1899 | void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) | |
1900 | { | |
1901 | struct sk_buff *msg; | |
1902 | ||
1903 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1904 | if (!msg) | |
1905 | return; | |
1906 | ||
1907 | if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) { | |
1908 | nlmsg_free(msg); | |
1909 | return; | |
1910 | } | |
1911 | ||
1912 | genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL); | |
1913 | } | |
1914 | ||
1915 | /* initialisation/exit functions */ | |
1916 | ||
1917 | int nl80211_init(void) | |
1918 | { | |
1919 | int err, i; | |
1920 | ||
1921 | err = genl_register_family(&nl80211_fam); | |
1922 | if (err) | |
1923 | return err; | |
1924 | ||
1925 | for (i = 0; i < ARRAY_SIZE(nl80211_ops); i++) { | |
1926 | err = genl_register_ops(&nl80211_fam, &nl80211_ops[i]); | |
1927 | if (err) | |
1928 | goto err_out; | |
1929 | } | |
1930 | ||
1931 | err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); | |
1932 | if (err) | |
1933 | goto err_out; | |
1934 | ||
1935 | return 0; | |
1936 | err_out: | |
1937 | genl_unregister_family(&nl80211_fam); | |
1938 | return err; | |
1939 | } | |
1940 | ||
1941 | void nl80211_exit(void) | |
1942 | { | |
1943 | genl_unregister_family(&nl80211_fam); | |
1944 | } |