Commit | Line | Data |
---|---|---|
55682965 JB |
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" | |
b2e1b302 | 21 | #include "reg.h" |
55682965 JB |
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 */ | |
bba95fef | 33 | static int get_drv_dev_by_info_ifindex(struct nlattr **attrs, |
55682965 JB |
34 | struct cfg80211_registered_device **drv, |
35 | struct net_device **dev) | |
36 | { | |
37 | int ifindex; | |
38 | ||
bba95fef | 39 | if (!attrs[NL80211_ATTR_IFINDEX]) |
55682965 JB |
40 | return -EINVAL; |
41 | ||
bba95fef | 42 | ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); |
55682965 JB |
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 }, | |
41ade00f JB |
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 }, | |
ed1b6cc7 JB |
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 }, | |
5727ef1b JB |
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 }, | |
2ec600d6 | 85 | [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, |
5727ef1b | 86 | [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, |
66f7ac50 | 87 | [NL80211_ATTR_MNTR_FLAGS] = { .type = NLA_NESTED }, |
2ec600d6 LCC |
88 | [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, |
89 | .len = IEEE80211_MAX_MESH_ID_LEN }, | |
90 | [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, | |
9f1ba906 | 91 | |
b2e1b302 LR |
92 | [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, |
93 | [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, | |
94 | ||
9f1ba906 JM |
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 }, | |
36aedc90 JM |
98 | |
99 | [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY, | |
100 | .len = NL80211_HT_CAPABILITY_LEN }, | |
55682965 JB |
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; | |
ee688b00 JB |
117 | struct nlattr *nl_bands, *nl_band; |
118 | struct nlattr *nl_freqs, *nl_freq; | |
119 | struct nlattr *nl_rates, *nl_rate; | |
f59ac048 | 120 | struct nlattr *nl_modes; |
ee688b00 JB |
121 | enum ieee80211_band band; |
122 | struct ieee80211_channel *chan; | |
123 | struct ieee80211_rate *rate; | |
124 | int i; | |
f59ac048 | 125 | u16 ifmodes = dev->wiphy.interface_modes; |
55682965 JB |
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)); | |
ee688b00 | 133 | |
f59ac048 LR |
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 | ||
ee688b00 JB |
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 | ||
55682965 JB |
214 | return genlmsg_end(msg, hdr); |
215 | ||
216 | nla_put_failure: | |
bc3ed28c TG |
217 | genlmsg_cancel(msg, hdr); |
218 | return -EMSGSIZE; | |
55682965 JB |
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) { | |
b4637271 | 229 | if (++idx <= start) |
55682965 JB |
230 | continue; |
231 | if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid, | |
232 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
b4637271 JV |
233 | dev) < 0) { |
234 | idx--; | |
55682965 | 235 | break; |
b4637271 | 236 | } |
55682965 JB |
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); | |
60719ffd | 302 | NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype); |
55682965 JB |
303 | return genlmsg_end(msg, hdr); |
304 | ||
305 | nla_put_failure: | |
bc3ed28c TG |
306 | genlmsg_cancel(msg, hdr); |
307 | return -EMSGSIZE; | |
55682965 JB |
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) { | |
bba95fef JB |
321 | if (wp_idx < wp_start) { |
322 | wp_idx++; | |
55682965 | 323 | continue; |
bba95fef | 324 | } |
55682965 JB |
325 | if_idx = 0; |
326 | ||
327 | mutex_lock(&dev->devlist_mtx); | |
328 | list_for_each_entry(wdev, &dev->netdev_list, list) { | |
bba95fef JB |
329 | if (if_idx < if_start) { |
330 | if_idx++; | |
55682965 | 331 | continue; |
bba95fef | 332 | } |
55682965 JB |
333 | if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid, |
334 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
bba95fef JB |
335 | wdev->netdev) < 0) { |
336 | mutex_unlock(&dev->devlist_mtx); | |
337 | goto out; | |
338 | } | |
339 | if_idx++; | |
55682965 JB |
340 | } |
341 | mutex_unlock(&dev->devlist_mtx); | |
bba95fef JB |
342 | |
343 | wp_idx++; | |
55682965 | 344 | } |
bba95fef | 345 | out: |
55682965 JB |
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 | ||
bba95fef | 361 | err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev); |
55682965 JB |
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 | ||
66f7ac50 MW |
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 | ||
55682965 JB |
414 | static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) |
415 | { | |
416 | struct cfg80211_registered_device *drv; | |
2ec600d6 | 417 | struct vif_params params; |
55682965 JB |
418 | int err, ifindex; |
419 | enum nl80211_iftype type; | |
420 | struct net_device *dev; | |
92ffe055 | 421 | u32 _flags, *flags = NULL; |
55682965 | 422 | |
2ec600d6 LCC |
423 | memset(¶ms, 0, sizeof(params)); |
424 | ||
bba95fef | 425 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
55682965 JB |
426 | if (err) |
427 | return err; | |
428 | ifindex = dev->ifindex; | |
723b038d | 429 | type = dev->ieee80211_ptr->iftype; |
55682965 JB |
430 | dev_put(dev); |
431 | ||
723b038d JB |
432 | err = -EINVAL; |
433 | if (info->attrs[NL80211_ATTR_IFTYPE]) { | |
434 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); | |
435 | if (type > NL80211_IFTYPE_MAX) | |
436 | goto unlock; | |
437 | } | |
438 | ||
f59ac048 LR |
439 | if (!drv->ops->change_virtual_intf || |
440 | !(drv->wiphy.interface_modes & (1 << type))) { | |
55682965 JB |
441 | err = -EOPNOTSUPP; |
442 | goto unlock; | |
443 | } | |
444 | ||
92ffe055 JB |
445 | if (info->attrs[NL80211_ATTR_MESH_ID]) { |
446 | if (type != NL80211_IFTYPE_MESH_POINT) { | |
447 | err = -EINVAL; | |
448 | goto unlock; | |
449 | } | |
2ec600d6 LCC |
450 | params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); |
451 | params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); | |
452 | } | |
453 | ||
92ffe055 JB |
454 | if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { |
455 | if (type != NL80211_IFTYPE_MONITOR) { | |
456 | err = -EINVAL; | |
457 | goto unlock; | |
458 | } | |
459 | err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], | |
460 | &_flags); | |
461 | if (!err) | |
462 | flags = &_flags; | |
463 | } | |
55682965 | 464 | rtnl_lock(); |
66f7ac50 | 465 | err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex, |
92ffe055 | 466 | type, flags, ¶ms); |
60719ffd JB |
467 | |
468 | dev = __dev_get_by_index(&init_net, ifindex); | |
469 | WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != type)); | |
470 | ||
55682965 JB |
471 | rtnl_unlock(); |
472 | ||
473 | unlock: | |
474 | cfg80211_put_dev(drv); | |
475 | return err; | |
476 | } | |
477 | ||
478 | static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) | |
479 | { | |
480 | struct cfg80211_registered_device *drv; | |
2ec600d6 | 481 | struct vif_params params; |
55682965 JB |
482 | int err; |
483 | enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; | |
66f7ac50 | 484 | u32 flags; |
55682965 | 485 | |
2ec600d6 LCC |
486 | memset(¶ms, 0, sizeof(params)); |
487 | ||
55682965 JB |
488 | if (!info->attrs[NL80211_ATTR_IFNAME]) |
489 | return -EINVAL; | |
490 | ||
491 | if (info->attrs[NL80211_ATTR_IFTYPE]) { | |
492 | type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); | |
493 | if (type > NL80211_IFTYPE_MAX) | |
494 | return -EINVAL; | |
495 | } | |
496 | ||
497 | drv = cfg80211_get_dev_from_info(info); | |
498 | if (IS_ERR(drv)) | |
499 | return PTR_ERR(drv); | |
500 | ||
f59ac048 LR |
501 | if (!drv->ops->add_virtual_intf || |
502 | !(drv->wiphy.interface_modes & (1 << type))) { | |
55682965 JB |
503 | err = -EOPNOTSUPP; |
504 | goto unlock; | |
505 | } | |
506 | ||
2ec600d6 LCC |
507 | if (type == NL80211_IFTYPE_MESH_POINT && |
508 | info->attrs[NL80211_ATTR_MESH_ID]) { | |
509 | params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); | |
510 | params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); | |
511 | } | |
512 | ||
55682965 | 513 | rtnl_lock(); |
66f7ac50 MW |
514 | err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? |
515 | info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, | |
516 | &flags); | |
55682965 | 517 | err = drv->ops->add_virtual_intf(&drv->wiphy, |
66f7ac50 | 518 | nla_data(info->attrs[NL80211_ATTR_IFNAME]), |
2ec600d6 | 519 | type, err ? NULL : &flags, ¶ms); |
55682965 JB |
520 | rtnl_unlock(); |
521 | ||
2ec600d6 | 522 | |
55682965 JB |
523 | unlock: |
524 | cfg80211_put_dev(drv); | |
525 | return err; | |
526 | } | |
527 | ||
528 | static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) | |
529 | { | |
530 | struct cfg80211_registered_device *drv; | |
531 | int ifindex, err; | |
532 | struct net_device *dev; | |
533 | ||
bba95fef | 534 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
55682965 JB |
535 | if (err) |
536 | return err; | |
537 | ifindex = dev->ifindex; | |
538 | dev_put(dev); | |
539 | ||
540 | if (!drv->ops->del_virtual_intf) { | |
541 | err = -EOPNOTSUPP; | |
542 | goto out; | |
543 | } | |
544 | ||
545 | rtnl_lock(); | |
546 | err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex); | |
547 | rtnl_unlock(); | |
548 | ||
549 | out: | |
550 | cfg80211_put_dev(drv); | |
551 | return err; | |
552 | } | |
553 | ||
41ade00f JB |
554 | struct get_key_cookie { |
555 | struct sk_buff *msg; | |
556 | int error; | |
557 | }; | |
558 | ||
559 | static void get_key_callback(void *c, struct key_params *params) | |
560 | { | |
561 | struct get_key_cookie *cookie = c; | |
562 | ||
563 | if (params->key) | |
564 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA, | |
565 | params->key_len, params->key); | |
566 | ||
567 | if (params->seq) | |
568 | NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ, | |
569 | params->seq_len, params->seq); | |
570 | ||
571 | if (params->cipher) | |
572 | NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER, | |
573 | params->cipher); | |
574 | ||
575 | return; | |
576 | nla_put_failure: | |
577 | cookie->error = 1; | |
578 | } | |
579 | ||
580 | static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) | |
581 | { | |
582 | struct cfg80211_registered_device *drv; | |
583 | int err; | |
584 | struct net_device *dev; | |
585 | u8 key_idx = 0; | |
586 | u8 *mac_addr = NULL; | |
587 | struct get_key_cookie cookie = { | |
588 | .error = 0, | |
589 | }; | |
590 | void *hdr; | |
591 | struct sk_buff *msg; | |
592 | ||
593 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
594 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
595 | ||
596 | if (key_idx > 3) | |
597 | return -EINVAL; | |
598 | ||
599 | if (info->attrs[NL80211_ATTR_MAC]) | |
600 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
601 | ||
bba95fef | 602 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
41ade00f JB |
603 | if (err) |
604 | return err; | |
605 | ||
606 | if (!drv->ops->get_key) { | |
607 | err = -EOPNOTSUPP; | |
608 | goto out; | |
609 | } | |
610 | ||
611 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
612 | if (!msg) { | |
613 | err = -ENOMEM; | |
614 | goto out; | |
615 | } | |
616 | ||
617 | hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0, | |
618 | NL80211_CMD_NEW_KEY); | |
619 | ||
620 | if (IS_ERR(hdr)) { | |
621 | err = PTR_ERR(hdr); | |
622 | goto out; | |
623 | } | |
624 | ||
625 | cookie.msg = msg; | |
626 | ||
627 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
628 | NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); | |
629 | if (mac_addr) | |
630 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); | |
631 | ||
632 | rtnl_lock(); | |
633 | err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr, | |
634 | &cookie, get_key_callback); | |
635 | rtnl_unlock(); | |
636 | ||
637 | if (err) | |
638 | goto out; | |
639 | ||
640 | if (cookie.error) | |
641 | goto nla_put_failure; | |
642 | ||
643 | genlmsg_end(msg, hdr); | |
644 | err = genlmsg_unicast(msg, info->snd_pid); | |
645 | goto out; | |
646 | ||
647 | nla_put_failure: | |
648 | err = -ENOBUFS; | |
649 | nlmsg_free(msg); | |
650 | out: | |
651 | cfg80211_put_dev(drv); | |
652 | dev_put(dev); | |
653 | return err; | |
654 | } | |
655 | ||
656 | static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) | |
657 | { | |
658 | struct cfg80211_registered_device *drv; | |
659 | int err; | |
660 | struct net_device *dev; | |
661 | u8 key_idx; | |
662 | ||
663 | if (!info->attrs[NL80211_ATTR_KEY_IDX]) | |
664 | return -EINVAL; | |
665 | ||
666 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
667 | ||
668 | if (key_idx > 3) | |
669 | return -EINVAL; | |
670 | ||
671 | /* currently only support setting default key */ | |
672 | if (!info->attrs[NL80211_ATTR_KEY_DEFAULT]) | |
673 | return -EINVAL; | |
674 | ||
bba95fef | 675 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
41ade00f JB |
676 | if (err) |
677 | return err; | |
678 | ||
679 | if (!drv->ops->set_default_key) { | |
680 | err = -EOPNOTSUPP; | |
681 | goto out; | |
682 | } | |
683 | ||
684 | rtnl_lock(); | |
685 | err = drv->ops->set_default_key(&drv->wiphy, dev, key_idx); | |
686 | rtnl_unlock(); | |
687 | ||
688 | out: | |
689 | cfg80211_put_dev(drv); | |
690 | dev_put(dev); | |
691 | return err; | |
692 | } | |
693 | ||
694 | static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) | |
695 | { | |
696 | struct cfg80211_registered_device *drv; | |
697 | int err; | |
698 | struct net_device *dev; | |
699 | struct key_params params; | |
700 | u8 key_idx = 0; | |
701 | u8 *mac_addr = NULL; | |
702 | ||
703 | memset(¶ms, 0, sizeof(params)); | |
704 | ||
705 | if (!info->attrs[NL80211_ATTR_KEY_CIPHER]) | |
706 | return -EINVAL; | |
707 | ||
708 | if (info->attrs[NL80211_ATTR_KEY_DATA]) { | |
709 | params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); | |
710 | params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); | |
711 | } | |
712 | ||
713 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
714 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
715 | ||
716 | params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); | |
717 | ||
718 | if (info->attrs[NL80211_ATTR_MAC]) | |
719 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
720 | ||
721 | if (key_idx > 3) | |
722 | return -EINVAL; | |
723 | ||
724 | /* | |
725 | * Disallow pairwise keys with non-zero index unless it's WEP | |
726 | * (because current deployments use pairwise WEP keys with | |
727 | * non-zero indizes but 802.11i clearly specifies to use zero) | |
728 | */ | |
729 | if (mac_addr && key_idx && | |
730 | params.cipher != WLAN_CIPHER_SUITE_WEP40 && | |
731 | params.cipher != WLAN_CIPHER_SUITE_WEP104) | |
732 | return -EINVAL; | |
733 | ||
734 | /* TODO: add definitions for the lengths to linux/ieee80211.h */ | |
735 | switch (params.cipher) { | |
736 | case WLAN_CIPHER_SUITE_WEP40: | |
737 | if (params.key_len != 5) | |
738 | return -EINVAL; | |
739 | break; | |
740 | case WLAN_CIPHER_SUITE_TKIP: | |
741 | if (params.key_len != 32) | |
742 | return -EINVAL; | |
743 | break; | |
744 | case WLAN_CIPHER_SUITE_CCMP: | |
745 | if (params.key_len != 16) | |
746 | return -EINVAL; | |
747 | break; | |
748 | case WLAN_CIPHER_SUITE_WEP104: | |
749 | if (params.key_len != 13) | |
750 | return -EINVAL; | |
751 | break; | |
752 | default: | |
753 | return -EINVAL; | |
754 | } | |
755 | ||
bba95fef | 756 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
41ade00f JB |
757 | if (err) |
758 | return err; | |
759 | ||
760 | if (!drv->ops->add_key) { | |
761 | err = -EOPNOTSUPP; | |
762 | goto out; | |
763 | } | |
764 | ||
765 | rtnl_lock(); | |
766 | err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, ¶ms); | |
767 | rtnl_unlock(); | |
768 | ||
769 | out: | |
770 | cfg80211_put_dev(drv); | |
771 | dev_put(dev); | |
772 | return err; | |
773 | } | |
774 | ||
775 | static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) | |
776 | { | |
777 | struct cfg80211_registered_device *drv; | |
778 | int err; | |
779 | struct net_device *dev; | |
780 | u8 key_idx = 0; | |
781 | u8 *mac_addr = NULL; | |
782 | ||
783 | if (info->attrs[NL80211_ATTR_KEY_IDX]) | |
784 | key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); | |
785 | ||
786 | if (key_idx > 3) | |
787 | return -EINVAL; | |
788 | ||
789 | if (info->attrs[NL80211_ATTR_MAC]) | |
790 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
791 | ||
bba95fef | 792 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
41ade00f JB |
793 | if (err) |
794 | return err; | |
795 | ||
796 | if (!drv->ops->del_key) { | |
797 | err = -EOPNOTSUPP; | |
798 | goto out; | |
799 | } | |
800 | ||
801 | rtnl_lock(); | |
802 | err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr); | |
803 | rtnl_unlock(); | |
804 | ||
805 | out: | |
806 | cfg80211_put_dev(drv); | |
807 | dev_put(dev); | |
808 | return err; | |
809 | } | |
810 | ||
ed1b6cc7 JB |
811 | static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info) |
812 | { | |
813 | int (*call)(struct wiphy *wiphy, struct net_device *dev, | |
814 | struct beacon_parameters *info); | |
815 | struct cfg80211_registered_device *drv; | |
816 | int err; | |
817 | struct net_device *dev; | |
818 | struct beacon_parameters params; | |
819 | int haveinfo = 0; | |
820 | ||
bba95fef | 821 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
ed1b6cc7 JB |
822 | if (err) |
823 | return err; | |
824 | ||
825 | switch (info->genlhdr->cmd) { | |
826 | case NL80211_CMD_NEW_BEACON: | |
827 | /* these are required for NEW_BEACON */ | |
828 | if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || | |
829 | !info->attrs[NL80211_ATTR_DTIM_PERIOD] || | |
830 | !info->attrs[NL80211_ATTR_BEACON_HEAD]) { | |
831 | err = -EINVAL; | |
832 | goto out; | |
833 | } | |
834 | ||
835 | call = drv->ops->add_beacon; | |
836 | break; | |
837 | case NL80211_CMD_SET_BEACON: | |
838 | call = drv->ops->set_beacon; | |
839 | break; | |
840 | default: | |
841 | WARN_ON(1); | |
842 | err = -EOPNOTSUPP; | |
843 | goto out; | |
844 | } | |
845 | ||
846 | if (!call) { | |
847 | err = -EOPNOTSUPP; | |
848 | goto out; | |
849 | } | |
850 | ||
851 | memset(¶ms, 0, sizeof(params)); | |
852 | ||
853 | if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { | |
854 | params.interval = | |
855 | nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); | |
856 | haveinfo = 1; | |
857 | } | |
858 | ||
859 | if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { | |
860 | params.dtim_period = | |
861 | nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); | |
862 | haveinfo = 1; | |
863 | } | |
864 | ||
865 | if (info->attrs[NL80211_ATTR_BEACON_HEAD]) { | |
866 | params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]); | |
867 | params.head_len = | |
868 | nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]); | |
869 | haveinfo = 1; | |
870 | } | |
871 | ||
872 | if (info->attrs[NL80211_ATTR_BEACON_TAIL]) { | |
873 | params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]); | |
874 | params.tail_len = | |
875 | nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]); | |
876 | haveinfo = 1; | |
877 | } | |
878 | ||
879 | if (!haveinfo) { | |
880 | err = -EINVAL; | |
881 | goto out; | |
882 | } | |
883 | ||
884 | rtnl_lock(); | |
885 | err = call(&drv->wiphy, dev, ¶ms); | |
886 | rtnl_unlock(); | |
887 | ||
888 | out: | |
889 | cfg80211_put_dev(drv); | |
890 | dev_put(dev); | |
891 | return err; | |
892 | } | |
893 | ||
894 | static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info) | |
895 | { | |
896 | struct cfg80211_registered_device *drv; | |
897 | int err; | |
898 | struct net_device *dev; | |
899 | ||
bba95fef | 900 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
ed1b6cc7 JB |
901 | if (err) |
902 | return err; | |
903 | ||
904 | if (!drv->ops->del_beacon) { | |
905 | err = -EOPNOTSUPP; | |
906 | goto out; | |
907 | } | |
908 | ||
909 | rtnl_lock(); | |
910 | err = drv->ops->del_beacon(&drv->wiphy, dev); | |
911 | rtnl_unlock(); | |
912 | ||
913 | out: | |
914 | cfg80211_put_dev(drv); | |
915 | dev_put(dev); | |
916 | return err; | |
917 | } | |
918 | ||
5727ef1b JB |
919 | static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { |
920 | [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, | |
921 | [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, | |
922 | [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, | |
923 | }; | |
924 | ||
925 | static int parse_station_flags(struct nlattr *nla, u32 *staflags) | |
926 | { | |
927 | struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; | |
928 | int flag; | |
929 | ||
930 | *staflags = 0; | |
931 | ||
932 | if (!nla) | |
933 | return 0; | |
934 | ||
935 | if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, | |
936 | nla, sta_flags_policy)) | |
937 | return -EINVAL; | |
938 | ||
939 | *staflags = STATION_FLAG_CHANGED; | |
940 | ||
941 | for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) | |
942 | if (flags[flag]) | |
943 | *staflags |= (1<<flag); | |
944 | ||
945 | return 0; | |
946 | } | |
947 | ||
fd5b74dc JB |
948 | static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq, |
949 | int flags, struct net_device *dev, | |
2ec600d6 | 950 | u8 *mac_addr, struct station_info *sinfo) |
fd5b74dc JB |
951 | { |
952 | void *hdr; | |
2ec600d6 | 953 | struct nlattr *sinfoattr; |
fd5b74dc JB |
954 | |
955 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); | |
956 | if (!hdr) | |
957 | return -1; | |
958 | ||
959 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
960 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); | |
961 | ||
2ec600d6 LCC |
962 | sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); |
963 | if (!sinfoattr) | |
fd5b74dc | 964 | goto nla_put_failure; |
2ec600d6 LCC |
965 | if (sinfo->filled & STATION_INFO_INACTIVE_TIME) |
966 | NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME, | |
967 | sinfo->inactive_time); | |
968 | if (sinfo->filled & STATION_INFO_RX_BYTES) | |
969 | NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES, | |
970 | sinfo->rx_bytes); | |
971 | if (sinfo->filled & STATION_INFO_TX_BYTES) | |
972 | NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES, | |
973 | sinfo->tx_bytes); | |
974 | if (sinfo->filled & STATION_INFO_LLID) | |
975 | NLA_PUT_U16(msg, NL80211_STA_INFO_LLID, | |
976 | sinfo->llid); | |
977 | if (sinfo->filled & STATION_INFO_PLID) | |
978 | NLA_PUT_U16(msg, NL80211_STA_INFO_PLID, | |
979 | sinfo->plid); | |
980 | if (sinfo->filled & STATION_INFO_PLINK_STATE) | |
981 | NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE, | |
982 | sinfo->plink_state); | |
983 | ||
984 | nla_nest_end(msg, sinfoattr); | |
fd5b74dc JB |
985 | |
986 | return genlmsg_end(msg, hdr); | |
987 | ||
988 | nla_put_failure: | |
bc3ed28c TG |
989 | genlmsg_cancel(msg, hdr); |
990 | return -EMSGSIZE; | |
fd5b74dc JB |
991 | } |
992 | ||
2ec600d6 | 993 | static int nl80211_dump_station(struct sk_buff *skb, |
bba95fef | 994 | struct netlink_callback *cb) |
2ec600d6 | 995 | { |
2ec600d6 LCC |
996 | struct station_info sinfo; |
997 | struct cfg80211_registered_device *dev; | |
bba95fef | 998 | struct net_device *netdev; |
2ec600d6 | 999 | u8 mac_addr[ETH_ALEN]; |
bba95fef JB |
1000 | int ifidx = cb->args[0]; |
1001 | int sta_idx = cb->args[1]; | |
2ec600d6 | 1002 | int err; |
2ec600d6 | 1003 | |
bba95fef JB |
1004 | if (!ifidx) { |
1005 | err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, | |
1006 | nl80211_fam.attrbuf, nl80211_fam.maxattr, | |
1007 | nl80211_policy); | |
1008 | if (err) | |
1009 | return err; | |
2ec600d6 | 1010 | |
bba95fef JB |
1011 | if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) |
1012 | return -EINVAL; | |
2ec600d6 | 1013 | |
bba95fef JB |
1014 | ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); |
1015 | if (!ifidx) | |
1016 | return -EINVAL; | |
2ec600d6 | 1017 | } |
2ec600d6 | 1018 | |
bba95fef JB |
1019 | netdev = dev_get_by_index(&init_net, ifidx); |
1020 | if (!netdev) | |
1021 | return -ENODEV; | |
2ec600d6 | 1022 | |
bba95fef JB |
1023 | dev = cfg80211_get_dev_from_ifindex(ifidx); |
1024 | if (IS_ERR(dev)) { | |
1025 | err = PTR_ERR(dev); | |
1026 | goto out_put_netdev; | |
1027 | } | |
1028 | ||
1029 | if (!dev->ops->dump_station) { | |
1030 | err = -ENOSYS; | |
1031 | goto out_err; | |
1032 | } | |
1033 | ||
1034 | rtnl_lock(); | |
1035 | ||
1036 | while (1) { | |
1037 | err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx, | |
1038 | mac_addr, &sinfo); | |
1039 | if (err == -ENOENT) | |
1040 | break; | |
1041 | if (err) | |
1042 | goto out_err_rtnl; | |
1043 | ||
1044 | if (nl80211_send_station(skb, | |
1045 | NETLINK_CB(cb->skb).pid, | |
1046 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
1047 | netdev, mac_addr, | |
1048 | &sinfo) < 0) | |
1049 | goto out; | |
1050 | ||
1051 | sta_idx++; | |
1052 | } | |
1053 | ||
1054 | ||
1055 | out: | |
1056 | cb->args[1] = sta_idx; | |
1057 | err = skb->len; | |
1058 | out_err_rtnl: | |
1059 | rtnl_unlock(); | |
1060 | out_err: | |
1061 | cfg80211_put_dev(dev); | |
1062 | out_put_netdev: | |
1063 | dev_put(netdev); | |
1064 | ||
1065 | return err; | |
2ec600d6 | 1066 | } |
fd5b74dc | 1067 | |
5727ef1b JB |
1068 | static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) |
1069 | { | |
fd5b74dc JB |
1070 | struct cfg80211_registered_device *drv; |
1071 | int err; | |
1072 | struct net_device *dev; | |
2ec600d6 | 1073 | struct station_info sinfo; |
fd5b74dc JB |
1074 | struct sk_buff *msg; |
1075 | u8 *mac_addr = NULL; | |
1076 | ||
2ec600d6 | 1077 | memset(&sinfo, 0, sizeof(sinfo)); |
fd5b74dc JB |
1078 | |
1079 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1080 | return -EINVAL; | |
1081 | ||
1082 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1083 | ||
bba95fef | 1084 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
fd5b74dc JB |
1085 | if (err) |
1086 | return err; | |
1087 | ||
1088 | if (!drv->ops->get_station) { | |
1089 | err = -EOPNOTSUPP; | |
1090 | goto out; | |
1091 | } | |
1092 | ||
1093 | rtnl_lock(); | |
2ec600d6 | 1094 | err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo); |
fd5b74dc JB |
1095 | rtnl_unlock(); |
1096 | ||
2ec600d6 LCC |
1097 | if (err) |
1098 | goto out; | |
1099 | ||
fd5b74dc JB |
1100 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
1101 | if (!msg) | |
1102 | goto out; | |
1103 | ||
1104 | if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0, | |
2ec600d6 | 1105 | dev, mac_addr, &sinfo) < 0) |
fd5b74dc JB |
1106 | goto out_free; |
1107 | ||
1108 | err = genlmsg_unicast(msg, info->snd_pid); | |
1109 | goto out; | |
1110 | ||
1111 | out_free: | |
1112 | nlmsg_free(msg); | |
1113 | ||
1114 | out: | |
1115 | cfg80211_put_dev(drv); | |
1116 | dev_put(dev); | |
1117 | return err; | |
5727ef1b JB |
1118 | } |
1119 | ||
1120 | /* | |
1121 | * Get vlan interface making sure it is on the right wiphy. | |
1122 | */ | |
1123 | static int get_vlan(struct nlattr *vlanattr, | |
1124 | struct cfg80211_registered_device *rdev, | |
1125 | struct net_device **vlan) | |
1126 | { | |
1127 | *vlan = NULL; | |
1128 | ||
1129 | if (vlanattr) { | |
1130 | *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr)); | |
1131 | if (!*vlan) | |
1132 | return -ENODEV; | |
1133 | if (!(*vlan)->ieee80211_ptr) | |
1134 | return -EINVAL; | |
1135 | if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy) | |
1136 | return -EINVAL; | |
1137 | } | |
1138 | return 0; | |
1139 | } | |
1140 | ||
1141 | static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) | |
1142 | { | |
1143 | struct cfg80211_registered_device *drv; | |
1144 | int err; | |
1145 | struct net_device *dev; | |
1146 | struct station_parameters params; | |
1147 | u8 *mac_addr = NULL; | |
1148 | ||
1149 | memset(¶ms, 0, sizeof(params)); | |
1150 | ||
1151 | params.listen_interval = -1; | |
1152 | ||
1153 | if (info->attrs[NL80211_ATTR_STA_AID]) | |
1154 | return -EINVAL; | |
1155 | ||
1156 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1157 | return -EINVAL; | |
1158 | ||
1159 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1160 | ||
1161 | if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { | |
1162 | params.supported_rates = | |
1163 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1164 | params.supported_rates_len = | |
1165 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1166 | } | |
1167 | ||
1168 | if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) | |
1169 | params.listen_interval = | |
1170 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); | |
1171 | ||
36aedc90 JM |
1172 | if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) |
1173 | params.ht_capa = | |
1174 | nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); | |
1175 | ||
5727ef1b JB |
1176 | if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], |
1177 | ¶ms.station_flags)) | |
1178 | return -EINVAL; | |
1179 | ||
2ec600d6 LCC |
1180 | if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) |
1181 | params.plink_action = | |
1182 | nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); | |
1183 | ||
bba95fef | 1184 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
5727ef1b JB |
1185 | if (err) |
1186 | return err; | |
1187 | ||
1188 | err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); | |
1189 | if (err) | |
1190 | goto out; | |
1191 | ||
1192 | if (!drv->ops->change_station) { | |
1193 | err = -EOPNOTSUPP; | |
1194 | goto out; | |
1195 | } | |
1196 | ||
1197 | rtnl_lock(); | |
1198 | err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, ¶ms); | |
1199 | rtnl_unlock(); | |
1200 | ||
1201 | out: | |
1202 | if (params.vlan) | |
1203 | dev_put(params.vlan); | |
1204 | cfg80211_put_dev(drv); | |
1205 | dev_put(dev); | |
1206 | return err; | |
1207 | } | |
1208 | ||
1209 | static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) | |
1210 | { | |
1211 | struct cfg80211_registered_device *drv; | |
1212 | int err; | |
1213 | struct net_device *dev; | |
1214 | struct station_parameters params; | |
1215 | u8 *mac_addr = NULL; | |
1216 | ||
1217 | memset(¶ms, 0, sizeof(params)); | |
1218 | ||
1219 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1220 | return -EINVAL; | |
1221 | ||
1222 | if (!info->attrs[NL80211_ATTR_STA_AID]) | |
1223 | return -EINVAL; | |
1224 | ||
1225 | if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) | |
1226 | return -EINVAL; | |
1227 | ||
1228 | if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) | |
1229 | return -EINVAL; | |
1230 | ||
1231 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1232 | params.supported_rates = | |
1233 | nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1234 | params.supported_rates_len = | |
1235 | nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); | |
1236 | params.listen_interval = | |
1237 | nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); | |
16f2e85d | 1238 | params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); |
36aedc90 JM |
1239 | if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) |
1240 | params.ht_capa = | |
1241 | nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); | |
5727ef1b JB |
1242 | |
1243 | if (parse_station_flags(info->attrs[NL80211_ATTR_STA_FLAGS], | |
1244 | ¶ms.station_flags)) | |
1245 | return -EINVAL; | |
1246 | ||
bba95fef | 1247 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
5727ef1b JB |
1248 | if (err) |
1249 | return err; | |
1250 | ||
1251 | err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan); | |
1252 | if (err) | |
1253 | goto out; | |
1254 | ||
1255 | if (!drv->ops->add_station) { | |
1256 | err = -EOPNOTSUPP; | |
1257 | goto out; | |
1258 | } | |
1259 | ||
1260 | rtnl_lock(); | |
1261 | err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, ¶ms); | |
1262 | rtnl_unlock(); | |
1263 | ||
1264 | out: | |
1265 | if (params.vlan) | |
1266 | dev_put(params.vlan); | |
1267 | cfg80211_put_dev(drv); | |
1268 | dev_put(dev); | |
1269 | return err; | |
1270 | } | |
1271 | ||
1272 | static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) | |
1273 | { | |
1274 | struct cfg80211_registered_device *drv; | |
1275 | int err; | |
1276 | struct net_device *dev; | |
1277 | u8 *mac_addr = NULL; | |
1278 | ||
1279 | if (info->attrs[NL80211_ATTR_MAC]) | |
1280 | mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1281 | ||
bba95fef | 1282 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
5727ef1b JB |
1283 | if (err) |
1284 | return err; | |
1285 | ||
1286 | if (!drv->ops->del_station) { | |
1287 | err = -EOPNOTSUPP; | |
1288 | goto out; | |
1289 | } | |
1290 | ||
1291 | rtnl_lock(); | |
1292 | err = drv->ops->del_station(&drv->wiphy, dev, mac_addr); | |
1293 | rtnl_unlock(); | |
1294 | ||
1295 | out: | |
1296 | cfg80211_put_dev(drv); | |
1297 | dev_put(dev); | |
1298 | return err; | |
1299 | } | |
1300 | ||
2ec600d6 LCC |
1301 | static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq, |
1302 | int flags, struct net_device *dev, | |
1303 | u8 *dst, u8 *next_hop, | |
1304 | struct mpath_info *pinfo) | |
1305 | { | |
1306 | void *hdr; | |
1307 | struct nlattr *pinfoattr; | |
1308 | ||
1309 | hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION); | |
1310 | if (!hdr) | |
1311 | return -1; | |
1312 | ||
1313 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); | |
1314 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst); | |
1315 | NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop); | |
1316 | ||
1317 | pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); | |
1318 | if (!pinfoattr) | |
1319 | goto nla_put_failure; | |
1320 | if (pinfo->filled & MPATH_INFO_FRAME_QLEN) | |
1321 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN, | |
1322 | pinfo->frame_qlen); | |
1323 | if (pinfo->filled & MPATH_INFO_DSN) | |
1324 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN, | |
1325 | pinfo->dsn); | |
1326 | if (pinfo->filled & MPATH_INFO_METRIC) | |
1327 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC, | |
1328 | pinfo->metric); | |
1329 | if (pinfo->filled & MPATH_INFO_EXPTIME) | |
1330 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME, | |
1331 | pinfo->exptime); | |
1332 | if (pinfo->filled & MPATH_INFO_FLAGS) | |
1333 | NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS, | |
1334 | pinfo->flags); | |
1335 | if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) | |
1336 | NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, | |
1337 | pinfo->discovery_timeout); | |
1338 | if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) | |
1339 | NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, | |
1340 | pinfo->discovery_retries); | |
1341 | ||
1342 | nla_nest_end(msg, pinfoattr); | |
1343 | ||
1344 | return genlmsg_end(msg, hdr); | |
1345 | ||
1346 | nla_put_failure: | |
bc3ed28c TG |
1347 | genlmsg_cancel(msg, hdr); |
1348 | return -EMSGSIZE; | |
2ec600d6 LCC |
1349 | } |
1350 | ||
1351 | static int nl80211_dump_mpath(struct sk_buff *skb, | |
bba95fef | 1352 | struct netlink_callback *cb) |
2ec600d6 | 1353 | { |
2ec600d6 LCC |
1354 | struct mpath_info pinfo; |
1355 | struct cfg80211_registered_device *dev; | |
bba95fef | 1356 | struct net_device *netdev; |
2ec600d6 LCC |
1357 | u8 dst[ETH_ALEN]; |
1358 | u8 next_hop[ETH_ALEN]; | |
bba95fef JB |
1359 | int ifidx = cb->args[0]; |
1360 | int path_idx = cb->args[1]; | |
2ec600d6 | 1361 | int err; |
2ec600d6 | 1362 | |
bba95fef JB |
1363 | if (!ifidx) { |
1364 | err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, | |
1365 | nl80211_fam.attrbuf, nl80211_fam.maxattr, | |
1366 | nl80211_policy); | |
1367 | if (err) | |
1368 | return err; | |
1369 | ||
1370 | if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]) | |
1371 | return -EINVAL; | |
1372 | ||
1373 | ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]); | |
1374 | if (!ifidx) | |
1375 | return -EINVAL; | |
1376 | } | |
1377 | ||
1378 | netdev = dev_get_by_index(&init_net, ifidx); | |
1379 | if (!netdev) | |
1380 | return -ENODEV; | |
1381 | ||
1382 | dev = cfg80211_get_dev_from_ifindex(ifidx); | |
1383 | if (IS_ERR(dev)) { | |
1384 | err = PTR_ERR(dev); | |
1385 | goto out_put_netdev; | |
1386 | } | |
1387 | ||
1388 | if (!dev->ops->dump_mpath) { | |
1389 | err = -ENOSYS; | |
1390 | goto out_err; | |
1391 | } | |
1392 | ||
1393 | rtnl_lock(); | |
1394 | ||
1395 | while (1) { | |
1396 | err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx, | |
1397 | dst, next_hop, &pinfo); | |
1398 | if (err == -ENOENT) | |
2ec600d6 | 1399 | break; |
bba95fef JB |
1400 | if (err) |
1401 | goto out_err_rtnl; | |
2ec600d6 | 1402 | |
bba95fef JB |
1403 | if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid, |
1404 | cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
1405 | netdev, dst, next_hop, | |
1406 | &pinfo) < 0) | |
1407 | goto out; | |
2ec600d6 | 1408 | |
bba95fef | 1409 | path_idx++; |
2ec600d6 | 1410 | } |
2ec600d6 | 1411 | |
2ec600d6 | 1412 | |
bba95fef JB |
1413 | out: |
1414 | cb->args[1] = path_idx; | |
1415 | err = skb->len; | |
1416 | out_err_rtnl: | |
1417 | rtnl_unlock(); | |
1418 | out_err: | |
1419 | cfg80211_put_dev(dev); | |
1420 | out_put_netdev: | |
1421 | dev_put(netdev); | |
1422 | ||
1423 | return err; | |
2ec600d6 LCC |
1424 | } |
1425 | ||
1426 | static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) | |
1427 | { | |
1428 | struct cfg80211_registered_device *drv; | |
1429 | int err; | |
1430 | struct net_device *dev; | |
1431 | struct mpath_info pinfo; | |
1432 | struct sk_buff *msg; | |
1433 | u8 *dst = NULL; | |
1434 | u8 next_hop[ETH_ALEN]; | |
1435 | ||
1436 | memset(&pinfo, 0, sizeof(pinfo)); | |
1437 | ||
1438 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1439 | return -EINVAL; | |
1440 | ||
1441 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1442 | ||
bba95fef | 1443 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
2ec600d6 LCC |
1444 | if (err) |
1445 | return err; | |
1446 | ||
1447 | if (!drv->ops->get_mpath) { | |
1448 | err = -EOPNOTSUPP; | |
1449 | goto out; | |
1450 | } | |
1451 | ||
1452 | rtnl_lock(); | |
1453 | err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo); | |
1454 | rtnl_unlock(); | |
1455 | ||
1456 | if (err) | |
1457 | goto out; | |
1458 | ||
1459 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1460 | if (!msg) | |
1461 | goto out; | |
1462 | ||
1463 | if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0, | |
1464 | dev, dst, next_hop, &pinfo) < 0) | |
1465 | goto out_free; | |
1466 | ||
1467 | err = genlmsg_unicast(msg, info->snd_pid); | |
1468 | goto out; | |
1469 | ||
1470 | out_free: | |
1471 | nlmsg_free(msg); | |
1472 | ||
1473 | out: | |
1474 | cfg80211_put_dev(drv); | |
1475 | dev_put(dev); | |
1476 | return err; | |
1477 | } | |
1478 | ||
1479 | static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) | |
1480 | { | |
1481 | struct cfg80211_registered_device *drv; | |
1482 | int err; | |
1483 | struct net_device *dev; | |
1484 | u8 *dst = NULL; | |
1485 | u8 *next_hop = NULL; | |
1486 | ||
1487 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1488 | return -EINVAL; | |
1489 | ||
1490 | if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) | |
1491 | return -EINVAL; | |
1492 | ||
1493 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1494 | next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); | |
1495 | ||
bba95fef | 1496 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
2ec600d6 LCC |
1497 | if (err) |
1498 | return err; | |
1499 | ||
1500 | if (!drv->ops->change_mpath) { | |
1501 | err = -EOPNOTSUPP; | |
1502 | goto out; | |
1503 | } | |
1504 | ||
1505 | rtnl_lock(); | |
1506 | err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop); | |
1507 | rtnl_unlock(); | |
1508 | ||
1509 | out: | |
1510 | cfg80211_put_dev(drv); | |
1511 | dev_put(dev); | |
1512 | return err; | |
1513 | } | |
1514 | static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) | |
1515 | { | |
1516 | struct cfg80211_registered_device *drv; | |
1517 | int err; | |
1518 | struct net_device *dev; | |
1519 | u8 *dst = NULL; | |
1520 | u8 *next_hop = NULL; | |
1521 | ||
1522 | if (!info->attrs[NL80211_ATTR_MAC]) | |
1523 | return -EINVAL; | |
1524 | ||
1525 | if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) | |
1526 | return -EINVAL; | |
1527 | ||
1528 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1529 | next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); | |
1530 | ||
bba95fef | 1531 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
2ec600d6 LCC |
1532 | if (err) |
1533 | return err; | |
1534 | ||
1535 | if (!drv->ops->add_mpath) { | |
1536 | err = -EOPNOTSUPP; | |
1537 | goto out; | |
1538 | } | |
1539 | ||
1540 | rtnl_lock(); | |
1541 | err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop); | |
1542 | rtnl_unlock(); | |
1543 | ||
1544 | out: | |
1545 | cfg80211_put_dev(drv); | |
1546 | dev_put(dev); | |
1547 | return err; | |
1548 | } | |
1549 | ||
1550 | static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) | |
1551 | { | |
1552 | struct cfg80211_registered_device *drv; | |
1553 | int err; | |
1554 | struct net_device *dev; | |
1555 | u8 *dst = NULL; | |
1556 | ||
1557 | if (info->attrs[NL80211_ATTR_MAC]) | |
1558 | dst = nla_data(info->attrs[NL80211_ATTR_MAC]); | |
1559 | ||
bba95fef | 1560 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); |
2ec600d6 LCC |
1561 | if (err) |
1562 | return err; | |
1563 | ||
1564 | if (!drv->ops->del_mpath) { | |
1565 | err = -EOPNOTSUPP; | |
1566 | goto out; | |
1567 | } | |
1568 | ||
1569 | rtnl_lock(); | |
1570 | err = drv->ops->del_mpath(&drv->wiphy, dev, dst); | |
1571 | rtnl_unlock(); | |
1572 | ||
1573 | out: | |
1574 | cfg80211_put_dev(drv); | |
1575 | dev_put(dev); | |
1576 | return err; | |
1577 | } | |
1578 | ||
9f1ba906 JM |
1579 | static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) |
1580 | { | |
1581 | struct cfg80211_registered_device *drv; | |
1582 | int err; | |
1583 | struct net_device *dev; | |
1584 | struct bss_parameters params; | |
1585 | ||
1586 | memset(¶ms, 0, sizeof(params)); | |
1587 | /* default to not changing parameters */ | |
1588 | params.use_cts_prot = -1; | |
1589 | params.use_short_preamble = -1; | |
1590 | params.use_short_slot_time = -1; | |
1591 | ||
1592 | if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) | |
1593 | params.use_cts_prot = | |
1594 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); | |
1595 | if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) | |
1596 | params.use_short_preamble = | |
1597 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); | |
1598 | if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) | |
1599 | params.use_short_slot_time = | |
1600 | nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); | |
1601 | ||
1602 | err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev); | |
1603 | if (err) | |
1604 | return err; | |
1605 | ||
1606 | if (!drv->ops->change_bss) { | |
1607 | err = -EOPNOTSUPP; | |
1608 | goto out; | |
1609 | } | |
1610 | ||
1611 | rtnl_lock(); | |
1612 | err = drv->ops->change_bss(&drv->wiphy, dev, ¶ms); | |
1613 | rtnl_unlock(); | |
1614 | ||
1615 | out: | |
1616 | cfg80211_put_dev(drv); | |
1617 | dev_put(dev); | |
1618 | return err; | |
1619 | } | |
1620 | ||
b2e1b302 LR |
1621 | static const struct nla_policy |
1622 | reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { | |
1623 | [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, | |
1624 | [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, | |
1625 | [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, | |
1626 | [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, | |
1627 | [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, | |
1628 | [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, | |
1629 | }; | |
1630 | ||
1631 | static int parse_reg_rule(struct nlattr *tb[], | |
1632 | struct ieee80211_reg_rule *reg_rule) | |
1633 | { | |
1634 | struct ieee80211_freq_range *freq_range = ®_rule->freq_range; | |
1635 | struct ieee80211_power_rule *power_rule = ®_rule->power_rule; | |
1636 | ||
1637 | if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) | |
1638 | return -EINVAL; | |
1639 | if (!tb[NL80211_ATTR_FREQ_RANGE_START]) | |
1640 | return -EINVAL; | |
1641 | if (!tb[NL80211_ATTR_FREQ_RANGE_END]) | |
1642 | return -EINVAL; | |
1643 | if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) | |
1644 | return -EINVAL; | |
1645 | if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) | |
1646 | return -EINVAL; | |
1647 | ||
1648 | reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); | |
1649 | ||
1650 | freq_range->start_freq_khz = | |
1651 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); | |
1652 | freq_range->end_freq_khz = | |
1653 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); | |
1654 | freq_range->max_bandwidth_khz = | |
1655 | nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); | |
1656 | ||
1657 | power_rule->max_eirp = | |
1658 | nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); | |
1659 | ||
1660 | if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) | |
1661 | power_rule->max_antenna_gain = | |
1662 | nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); | |
1663 | ||
1664 | return 0; | |
1665 | } | |
1666 | ||
1667 | static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) | |
1668 | { | |
1669 | int r; | |
1670 | char *data = NULL; | |
1671 | ||
1672 | if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) | |
1673 | return -EINVAL; | |
1674 | ||
1675 | data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); | |
1676 | ||
1677 | #ifdef CONFIG_WIRELESS_OLD_REGULATORY | |
1678 | /* We ignore world regdom requests with the old regdom setup */ | |
1679 | if (is_world_regdom(data)) | |
1680 | return -EINVAL; | |
1681 | #endif | |
1682 | mutex_lock(&cfg80211_drv_mutex); | |
1683 | r = __regulatory_hint(NULL, REGDOM_SET_BY_USER, data, NULL); | |
1684 | mutex_unlock(&cfg80211_drv_mutex); | |
1685 | return r; | |
1686 | } | |
1687 | ||
1688 | static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) | |
1689 | { | |
1690 | struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; | |
1691 | struct nlattr *nl_reg_rule; | |
1692 | char *alpha2 = NULL; | |
1693 | int rem_reg_rules = 0, r = 0; | |
1694 | u32 num_rules = 0, rule_idx = 0, size_of_regd; | |
1695 | struct ieee80211_regdomain *rd = NULL; | |
1696 | ||
1697 | if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) | |
1698 | return -EINVAL; | |
1699 | ||
1700 | if (!info->attrs[NL80211_ATTR_REG_RULES]) | |
1701 | return -EINVAL; | |
1702 | ||
1703 | alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); | |
1704 | ||
1705 | nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], | |
1706 | rem_reg_rules) { | |
1707 | num_rules++; | |
1708 | if (num_rules > NL80211_MAX_SUPP_REG_RULES) | |
1709 | goto bad_reg; | |
1710 | } | |
1711 | ||
1712 | if (!reg_is_valid_request(alpha2)) | |
1713 | return -EINVAL; | |
1714 | ||
1715 | size_of_regd = sizeof(struct ieee80211_regdomain) + | |
1716 | (num_rules * sizeof(struct ieee80211_reg_rule)); | |
1717 | ||
1718 | rd = kzalloc(size_of_regd, GFP_KERNEL); | |
1719 | if (!rd) | |
1720 | return -ENOMEM; | |
1721 | ||
1722 | rd->n_reg_rules = num_rules; | |
1723 | rd->alpha2[0] = alpha2[0]; | |
1724 | rd->alpha2[1] = alpha2[1]; | |
1725 | ||
1726 | nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], | |
1727 | rem_reg_rules) { | |
1728 | nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, | |
1729 | nla_data(nl_reg_rule), nla_len(nl_reg_rule), | |
1730 | reg_rule_policy); | |
1731 | r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); | |
1732 | if (r) | |
1733 | goto bad_reg; | |
1734 | ||
1735 | rule_idx++; | |
1736 | ||
1737 | if (rule_idx > NL80211_MAX_SUPP_REG_RULES) | |
1738 | goto bad_reg; | |
1739 | } | |
1740 | ||
1741 | BUG_ON(rule_idx != num_rules); | |
1742 | ||
1743 | mutex_lock(&cfg80211_drv_mutex); | |
1744 | r = set_regdom(rd); | |
1745 | mutex_unlock(&cfg80211_drv_mutex); | |
1746 | if (r) | |
1747 | goto bad_reg; | |
1748 | ||
1749 | return r; | |
1750 | ||
1751 | bad_reg: | |
1752 | kfree(rd); | |
1753 | return -EINVAL; | |
1754 | } | |
1755 | ||
55682965 JB |
1756 | static struct genl_ops nl80211_ops[] = { |
1757 | { | |
1758 | .cmd = NL80211_CMD_GET_WIPHY, | |
1759 | .doit = nl80211_get_wiphy, | |
1760 | .dumpit = nl80211_dump_wiphy, | |
1761 | .policy = nl80211_policy, | |
1762 | /* can be retrieved by unprivileged users */ | |
1763 | }, | |
1764 | { | |
1765 | .cmd = NL80211_CMD_SET_WIPHY, | |
1766 | .doit = nl80211_set_wiphy, | |
1767 | .policy = nl80211_policy, | |
1768 | .flags = GENL_ADMIN_PERM, | |
1769 | }, | |
1770 | { | |
1771 | .cmd = NL80211_CMD_GET_INTERFACE, | |
1772 | .doit = nl80211_get_interface, | |
1773 | .dumpit = nl80211_dump_interface, | |
1774 | .policy = nl80211_policy, | |
1775 | /* can be retrieved by unprivileged users */ | |
1776 | }, | |
1777 | { | |
1778 | .cmd = NL80211_CMD_SET_INTERFACE, | |
1779 | .doit = nl80211_set_interface, | |
1780 | .policy = nl80211_policy, | |
1781 | .flags = GENL_ADMIN_PERM, | |
1782 | }, | |
1783 | { | |
1784 | .cmd = NL80211_CMD_NEW_INTERFACE, | |
1785 | .doit = nl80211_new_interface, | |
1786 | .policy = nl80211_policy, | |
1787 | .flags = GENL_ADMIN_PERM, | |
1788 | }, | |
1789 | { | |
1790 | .cmd = NL80211_CMD_DEL_INTERFACE, | |
1791 | .doit = nl80211_del_interface, | |
1792 | .policy = nl80211_policy, | |
41ade00f JB |
1793 | .flags = GENL_ADMIN_PERM, |
1794 | }, | |
1795 | { | |
1796 | .cmd = NL80211_CMD_GET_KEY, | |
1797 | .doit = nl80211_get_key, | |
1798 | .policy = nl80211_policy, | |
1799 | .flags = GENL_ADMIN_PERM, | |
1800 | }, | |
1801 | { | |
1802 | .cmd = NL80211_CMD_SET_KEY, | |
1803 | .doit = nl80211_set_key, | |
1804 | .policy = nl80211_policy, | |
1805 | .flags = GENL_ADMIN_PERM, | |
1806 | }, | |
1807 | { | |
1808 | .cmd = NL80211_CMD_NEW_KEY, | |
1809 | .doit = nl80211_new_key, | |
1810 | .policy = nl80211_policy, | |
1811 | .flags = GENL_ADMIN_PERM, | |
1812 | }, | |
1813 | { | |
1814 | .cmd = NL80211_CMD_DEL_KEY, | |
1815 | .doit = nl80211_del_key, | |
1816 | .policy = nl80211_policy, | |
55682965 JB |
1817 | .flags = GENL_ADMIN_PERM, |
1818 | }, | |
ed1b6cc7 JB |
1819 | { |
1820 | .cmd = NL80211_CMD_SET_BEACON, | |
1821 | .policy = nl80211_policy, | |
1822 | .flags = GENL_ADMIN_PERM, | |
1823 | .doit = nl80211_addset_beacon, | |
1824 | }, | |
1825 | { | |
1826 | .cmd = NL80211_CMD_NEW_BEACON, | |
1827 | .policy = nl80211_policy, | |
1828 | .flags = GENL_ADMIN_PERM, | |
1829 | .doit = nl80211_addset_beacon, | |
1830 | }, | |
1831 | { | |
1832 | .cmd = NL80211_CMD_DEL_BEACON, | |
1833 | .policy = nl80211_policy, | |
1834 | .flags = GENL_ADMIN_PERM, | |
1835 | .doit = nl80211_del_beacon, | |
1836 | }, | |
5727ef1b JB |
1837 | { |
1838 | .cmd = NL80211_CMD_GET_STATION, | |
1839 | .doit = nl80211_get_station, | |
2ec600d6 | 1840 | .dumpit = nl80211_dump_station, |
5727ef1b JB |
1841 | .policy = nl80211_policy, |
1842 | .flags = GENL_ADMIN_PERM, | |
1843 | }, | |
1844 | { | |
1845 | .cmd = NL80211_CMD_SET_STATION, | |
1846 | .doit = nl80211_set_station, | |
1847 | .policy = nl80211_policy, | |
1848 | .flags = GENL_ADMIN_PERM, | |
1849 | }, | |
1850 | { | |
1851 | .cmd = NL80211_CMD_NEW_STATION, | |
1852 | .doit = nl80211_new_station, | |
1853 | .policy = nl80211_policy, | |
1854 | .flags = GENL_ADMIN_PERM, | |
1855 | }, | |
1856 | { | |
1857 | .cmd = NL80211_CMD_DEL_STATION, | |
1858 | .doit = nl80211_del_station, | |
1859 | .policy = nl80211_policy, | |
2ec600d6 LCC |
1860 | .flags = GENL_ADMIN_PERM, |
1861 | }, | |
1862 | { | |
1863 | .cmd = NL80211_CMD_GET_MPATH, | |
1864 | .doit = nl80211_get_mpath, | |
1865 | .dumpit = nl80211_dump_mpath, | |
1866 | .policy = nl80211_policy, | |
1867 | .flags = GENL_ADMIN_PERM, | |
1868 | }, | |
1869 | { | |
1870 | .cmd = NL80211_CMD_SET_MPATH, | |
1871 | .doit = nl80211_set_mpath, | |
1872 | .policy = nl80211_policy, | |
1873 | .flags = GENL_ADMIN_PERM, | |
1874 | }, | |
1875 | { | |
1876 | .cmd = NL80211_CMD_NEW_MPATH, | |
1877 | .doit = nl80211_new_mpath, | |
1878 | .policy = nl80211_policy, | |
1879 | .flags = GENL_ADMIN_PERM, | |
1880 | }, | |
1881 | { | |
1882 | .cmd = NL80211_CMD_DEL_MPATH, | |
1883 | .doit = nl80211_del_mpath, | |
1884 | .policy = nl80211_policy, | |
9f1ba906 JM |
1885 | .flags = GENL_ADMIN_PERM, |
1886 | }, | |
1887 | { | |
1888 | .cmd = NL80211_CMD_SET_BSS, | |
1889 | .doit = nl80211_set_bss, | |
1890 | .policy = nl80211_policy, | |
b2e1b302 LR |
1891 | .flags = GENL_ADMIN_PERM, |
1892 | }, | |
1893 | { | |
1894 | .cmd = NL80211_CMD_SET_REG, | |
1895 | .doit = nl80211_set_reg, | |
1896 | .policy = nl80211_policy, | |
1897 | .flags = GENL_ADMIN_PERM, | |
1898 | }, | |
1899 | { | |
1900 | .cmd = NL80211_CMD_REQ_SET_REG, | |
1901 | .doit = nl80211_req_set_reg, | |
1902 | .policy = nl80211_policy, | |
5727ef1b JB |
1903 | .flags = GENL_ADMIN_PERM, |
1904 | }, | |
55682965 JB |
1905 | }; |
1906 | ||
1907 | /* multicast groups */ | |
1908 | static struct genl_multicast_group nl80211_config_mcgrp = { | |
1909 | .name = "config", | |
1910 | }; | |
1911 | ||
1912 | /* notification functions */ | |
1913 | ||
1914 | void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) | |
1915 | { | |
1916 | struct sk_buff *msg; | |
1917 | ||
1918 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1919 | if (!msg) | |
1920 | return; | |
1921 | ||
1922 | if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) { | |
1923 | nlmsg_free(msg); | |
1924 | return; | |
1925 | } | |
1926 | ||
1927 | genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL); | |
1928 | } | |
1929 | ||
1930 | /* initialisation/exit functions */ | |
1931 | ||
1932 | int nl80211_init(void) | |
1933 | { | |
1934 | int err, i; | |
1935 | ||
1936 | err = genl_register_family(&nl80211_fam); | |
1937 | if (err) | |
1938 | return err; | |
1939 | ||
1940 | for (i = 0; i < ARRAY_SIZE(nl80211_ops); i++) { | |
1941 | err = genl_register_ops(&nl80211_fam, &nl80211_ops[i]); | |
1942 | if (err) | |
1943 | goto err_out; | |
1944 | } | |
1945 | ||
1946 | err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); | |
1947 | if (err) | |
1948 | goto err_out; | |
1949 | ||
1950 | return 0; | |
1951 | err_out: | |
1952 | genl_unregister_family(&nl80211_fam); | |
1953 | return err; | |
1954 | } | |
1955 | ||
1956 | void nl80211_exit(void) | |
1957 | { | |
1958 | genl_unregister_family(&nl80211_fam); | |
1959 | } |