blob: 19dc796bb0b8d8533e2106c0f65d4d00b60f7687 [file] [log] [blame]
Johannes Berg55682962007-09-20 13:09:35 -04001/*
2 * This is the new netlink-based wireless configuration interface.
3 *
Johannes Berg08645122009-05-11 13:54:58 +02004 * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net>
Johannes Berg55682962007-09-20 13:09:35 -04005 */
6
7#include <linux/if.h>
8#include <linux/module.h>
9#include <linux/err.h>
Johannes Berg55682962007-09-20 13:09:35 -040010#include <linux/list.h>
11#include <linux/if_ether.h>
12#include <linux/ieee80211.h>
13#include <linux/nl80211.h>
14#include <linux/rtnetlink.h>
15#include <linux/netlink.h>
Johannes Berg2a519312009-02-10 21:25:55 +010016#include <linux/etherdevice.h>
Johannes Berg55682962007-09-20 13:09:35 -040017#include <net/genetlink.h>
18#include <net/cfg80211.h>
19#include "core.h"
20#include "nl80211.h"
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -070021#include "reg.h"
Johannes Berg55682962007-09-20 13:09:35 -040022
23/* the netlink family */
24static 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 */
Johannes Bergbba95fe2008-07-29 13:22:51 +020033static int get_drv_dev_by_info_ifindex(struct nlattr **attrs,
Johannes Berg55682962007-09-20 13:09:35 -040034 struct cfg80211_registered_device **drv,
35 struct net_device **dev)
36{
37 int ifindex;
38
Johannes Bergbba95fe2008-07-29 13:22:51 +020039 if (!attrs[NL80211_ATTR_IFINDEX])
Johannes Berg55682962007-09-20 13:09:35 -040040 return -EINVAL;
41
Johannes Bergbba95fe2008-07-29 13:22:51 +020042 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
Johannes Berg55682962007-09-20 13:09:35 -040043 *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 */
57static 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,
David S. Miller079e24e2009-05-26 21:15:00 -070060 .len = 20-1 },
Jouni Malinen31888482008-10-30 16:59:24 +020061 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
Jouni Malinen72bdcf32008-11-26 16:15:24 +020062 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
Sujith094d05d2008-12-12 11:57:43 +053063 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +020064 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
65 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
66 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
67 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
Johannes Berg55682962007-09-20 13:09:35 -040068
69 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
70 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
71 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
Johannes Berg41ade002007-12-19 02:03:29 +010072
73 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
74
75 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
76 .len = WLAN_MAX_KEY_LEN },
77 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
78 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
79 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
Jouni Malinen9f26a952009-05-15 12:38:32 +030080 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
Johannes Berged1b6cc2007-12-19 02:03:32 +010081
82 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
83 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
84 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
85 .len = IEEE80211_MAX_DATA_LEN },
86 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
87 .len = IEEE80211_MAX_DATA_LEN },
Johannes Berg5727ef12007-12-19 02:03:34 +010088 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
89 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
90 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
91 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
92 .len = NL80211_MAX_SUPP_RATES },
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +010093 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
Johannes Berg5727ef12007-12-19 02:03:34 +010094 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
Johannes Berg0a9542e2008-10-15 11:54:04 +020095 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +010096 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
97 .len = IEEE80211_MAX_MESH_ID_LEN },
98 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
Jouni Malinen9f1ba902008-08-07 20:07:01 +030099
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -0700100 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
101 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
102
Jouni Malinen9f1ba902008-08-07 20:07:01 +0300103 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
104 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
105 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
Jouni Malinen90c97a02008-10-30 16:59:22 +0200106 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
107 .len = NL80211_MAX_SUPP_RATES },
Jouni Malinen36aedc92008-08-25 11:58:58 +0300108
colin@cozybit.com93da9cc2008-10-21 12:03:48 -0700109 [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
110
Jouni Malinen36aedc92008-08-25 11:58:58 +0300111 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
112 .len = NL80211_HT_CAPABILITY_LEN },
Jouni Malinen9aed3cc2009-01-13 16:03:29 +0200113
114 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
115 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
116 .len = IEEE80211_MAX_DATA_LEN },
Johannes Berg2a519312009-02-10 21:25:55 +0100117 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
118 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
Jouni Malinen636a5d32009-03-19 13:39:22 +0200119
120 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
121 .len = IEEE80211_MAX_SSID_LEN },
122 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
123 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
Johannes Berg04a773a2009-04-19 21:24:32 +0200124 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
Jouni Malinen1965c852009-04-22 21:38:25 +0300125 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
Jouni Malinendc6382ce2009-05-06 22:09:37 +0300126 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
Johannes Bergeccb8e82009-05-11 21:57:56 +0300127 [NL80211_ATTR_STA_FLAGS2] = {
128 .len = sizeof(struct nl80211_sta_flag_update),
129 },
Jouni Malinen3f77316c2009-05-11 21:57:57 +0300130 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
Johannes Berg55682962007-09-20 13:09:35 -0400131};
132
Johannes Bergf4a11bb2009-03-27 12:40:28 +0100133/* IE validation */
134static bool is_valid_ie_attr(const struct nlattr *attr)
135{
136 const u8 *pos;
137 int len;
138
139 if (!attr)
140 return true;
141
142 pos = nla_data(attr);
143 len = nla_len(attr);
144
145 while (len) {
146 u8 elemlen;
147
148 if (len < 2)
149 return false;
150 len -= 2;
151
152 elemlen = pos[1];
153 if (elemlen > len)
154 return false;
155
156 len -= elemlen;
157 pos += 2 + elemlen;
158 }
159
160 return true;
161}
162
Johannes Berg55682962007-09-20 13:09:35 -0400163/* message building helper */
164static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
165 int flags, u8 cmd)
166{
167 /* since there is no private header just add the generic one */
168 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
169}
170
Luis R. Rodriguez5dab3b82009-04-02 14:08:08 -0400171static int nl80211_msg_put_channel(struct sk_buff *msg,
172 struct ieee80211_channel *chan)
173{
174 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
175 chan->center_freq);
176
177 if (chan->flags & IEEE80211_CHAN_DISABLED)
178 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
179 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
180 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
181 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
182 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
183 if (chan->flags & IEEE80211_CHAN_RADAR)
184 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
185
186 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
187 DBM_TO_MBM(chan->max_power));
188
189 return 0;
190
191 nla_put_failure:
192 return -ENOBUFS;
193}
194
Johannes Berg55682962007-09-20 13:09:35 -0400195/* netlink command implementations */
196
197static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
198 struct cfg80211_registered_device *dev)
199{
200 void *hdr;
Johannes Bergee688b002008-01-24 19:38:39 +0100201 struct nlattr *nl_bands, *nl_band;
202 struct nlattr *nl_freqs, *nl_freq;
203 struct nlattr *nl_rates, *nl_rate;
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700204 struct nlattr *nl_modes;
Johannes Berg8fdc6212009-03-14 09:34:01 +0100205 struct nlattr *nl_cmds;
Johannes Bergee688b002008-01-24 19:38:39 +0100206 enum ieee80211_band band;
207 struct ieee80211_channel *chan;
208 struct ieee80211_rate *rate;
209 int i;
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700210 u16 ifmodes = dev->wiphy.interface_modes;
Johannes Berg55682962007-09-20 13:09:35 -0400211
212 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
213 if (!hdr)
214 return -1;
215
Luis R. Rodriguezb5850a72009-02-21 00:04:19 -0500216 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
Johannes Berg55682962007-09-20 13:09:35 -0400217 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200218
219 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
220 dev->wiphy.retry_short);
221 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
222 dev->wiphy.retry_long);
223 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
224 dev->wiphy.frag_threshold);
225 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
226 dev->wiphy.rts_threshold);
227
Johannes Berg2a519312009-02-10 21:25:55 +0100228 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
229 dev->wiphy.max_scan_ssids);
Johannes Berg18a83652009-03-31 12:12:05 +0200230 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
231 dev->wiphy.max_scan_ie_len);
Johannes Bergee688b002008-01-24 19:38:39 +0100232
Johannes Berg25e47c182009-04-02 20:14:06 +0200233 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
234 sizeof(u32) * dev->wiphy.n_cipher_suites,
235 dev->wiphy.cipher_suites);
236
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700237 nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
238 if (!nl_modes)
239 goto nla_put_failure;
240
241 i = 0;
242 while (ifmodes) {
243 if (ifmodes & 1)
244 NLA_PUT_FLAG(msg, i);
245 ifmodes >>= 1;
246 i++;
247 }
248
249 nla_nest_end(msg, nl_modes);
250
Johannes Bergee688b002008-01-24 19:38:39 +0100251 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
252 if (!nl_bands)
253 goto nla_put_failure;
254
255 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
256 if (!dev->wiphy.bands[band])
257 continue;
258
259 nl_band = nla_nest_start(msg, band);
260 if (!nl_band)
261 goto nla_put_failure;
262
Johannes Bergd51626d2008-10-09 12:20:13 +0200263 /* add HT info */
264 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
265 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
266 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
267 &dev->wiphy.bands[band]->ht_cap.mcs);
268 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
269 dev->wiphy.bands[band]->ht_cap.cap);
270 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
271 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
272 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
273 dev->wiphy.bands[band]->ht_cap.ampdu_density);
274 }
275
Johannes Bergee688b002008-01-24 19:38:39 +0100276 /* add frequencies */
277 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
278 if (!nl_freqs)
279 goto nla_put_failure;
280
281 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
282 nl_freq = nla_nest_start(msg, i);
283 if (!nl_freq)
284 goto nla_put_failure;
285
286 chan = &dev->wiphy.bands[band]->channels[i];
Johannes Bergee688b002008-01-24 19:38:39 +0100287
Luis R. Rodriguez5dab3b82009-04-02 14:08:08 -0400288 if (nl80211_msg_put_channel(msg, chan))
289 goto nla_put_failure;
Jouni Malinene2f367f262008-11-21 19:01:30 +0200290
Johannes Bergee688b002008-01-24 19:38:39 +0100291 nla_nest_end(msg, nl_freq);
292 }
293
294 nla_nest_end(msg, nl_freqs);
295
296 /* add bitrates */
297 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
298 if (!nl_rates)
299 goto nla_put_failure;
300
301 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
302 nl_rate = nla_nest_start(msg, i);
303 if (!nl_rate)
304 goto nla_put_failure;
305
306 rate = &dev->wiphy.bands[band]->bitrates[i];
307 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
308 rate->bitrate);
309 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
310 NLA_PUT_FLAG(msg,
311 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
312
313 nla_nest_end(msg, nl_rate);
314 }
315
316 nla_nest_end(msg, nl_rates);
317
318 nla_nest_end(msg, nl_band);
319 }
320 nla_nest_end(msg, nl_bands);
321
Johannes Berg8fdc6212009-03-14 09:34:01 +0100322 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
323 if (!nl_cmds)
324 goto nla_put_failure;
325
326 i = 0;
327#define CMD(op, n) \
328 do { \
329 if (dev->ops->op) { \
330 i++; \
331 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
332 } \
333 } while (0)
334
335 CMD(add_virtual_intf, NEW_INTERFACE);
336 CMD(change_virtual_intf, SET_INTERFACE);
337 CMD(add_key, NEW_KEY);
338 CMD(add_beacon, NEW_BEACON);
339 CMD(add_station, NEW_STATION);
340 CMD(add_mpath, NEW_MPATH);
341 CMD(set_mesh_params, SET_MESH_PARAMS);
342 CMD(change_bss, SET_BSS);
Jouni Malinen636a5d32009-03-19 13:39:22 +0200343 CMD(auth, AUTHENTICATE);
344 CMD(assoc, ASSOCIATE);
345 CMD(deauth, DEAUTHENTICATE);
346 CMD(disassoc, DISASSOCIATE);
Johannes Berg04a773a2009-04-19 21:24:32 +0200347 CMD(join_ibss, JOIN_IBSS);
Johannes Berg8fdc6212009-03-14 09:34:01 +0100348
349#undef CMD
350 nla_nest_end(msg, nl_cmds);
351
Johannes Berg55682962007-09-20 13:09:35 -0400352 return genlmsg_end(msg, hdr);
353
354 nla_put_failure:
Thomas Grafbc3ed282008-06-03 16:36:54 -0700355 genlmsg_cancel(msg, hdr);
356 return -EMSGSIZE;
Johannes Berg55682962007-09-20 13:09:35 -0400357}
358
359static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
360{
361 int idx = 0;
362 int start = cb->args[0];
363 struct cfg80211_registered_device *dev;
364
Luis R. Rodrigueza1794392009-02-21 00:04:21 -0500365 mutex_lock(&cfg80211_mutex);
Johannes Berg55682962007-09-20 13:09:35 -0400366 list_for_each_entry(dev, &cfg80211_drv_list, list) {
Julius Volzb4637272008-07-08 14:02:19 +0200367 if (++idx <= start)
Johannes Berg55682962007-09-20 13:09:35 -0400368 continue;
369 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
370 cb->nlh->nlmsg_seq, NLM_F_MULTI,
Julius Volzb4637272008-07-08 14:02:19 +0200371 dev) < 0) {
372 idx--;
Johannes Berg55682962007-09-20 13:09:35 -0400373 break;
Julius Volzb4637272008-07-08 14:02:19 +0200374 }
Johannes Berg55682962007-09-20 13:09:35 -0400375 }
Luis R. Rodrigueza1794392009-02-21 00:04:21 -0500376 mutex_unlock(&cfg80211_mutex);
Johannes Berg55682962007-09-20 13:09:35 -0400377
378 cb->args[0] = idx;
379
380 return skb->len;
381}
382
383static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
384{
385 struct sk_buff *msg;
386 struct cfg80211_registered_device *dev;
387
388 dev = cfg80211_get_dev_from_info(info);
389 if (IS_ERR(dev))
390 return PTR_ERR(dev);
391
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -0700392 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
Johannes Berg55682962007-09-20 13:09:35 -0400393 if (!msg)
394 goto out_err;
395
396 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
397 goto out_free;
398
399 cfg80211_put_dev(dev);
400
401 return genlmsg_unicast(msg, info->snd_pid);
402
403 out_free:
404 nlmsg_free(msg);
405 out_err:
406 cfg80211_put_dev(dev);
407 return -ENOBUFS;
408}
409
Jouni Malinen31888482008-10-30 16:59:24 +0200410static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
411 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
412 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
413 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
414 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
415 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
416};
417
418static int parse_txq_params(struct nlattr *tb[],
419 struct ieee80211_txq_params *txq_params)
420{
421 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
422 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
423 !tb[NL80211_TXQ_ATTR_AIFS])
424 return -EINVAL;
425
426 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
427 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
428 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
429 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
430 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
431
432 return 0;
433}
434
Johannes Berg55682962007-09-20 13:09:35 -0400435static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
436{
437 struct cfg80211_registered_device *rdev;
Jouni Malinen31888482008-10-30 16:59:24 +0200438 int result = 0, rem_txq_params = 0;
439 struct nlattr *nl_txq_params;
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200440 u32 changed;
441 u8 retry_short = 0, retry_long = 0;
442 u32 frag_threshold = 0, rts_threshold = 0;
Johannes Berg55682962007-09-20 13:09:35 -0400443
Johannes Berg4bbf4d52009-03-24 09:35:46 +0100444 rtnl_lock();
Johannes Berg55682962007-09-20 13:09:35 -0400445
Johannes Berg4bbf4d52009-03-24 09:35:46 +0100446 mutex_lock(&cfg80211_mutex);
447
448 rdev = __cfg80211_drv_from_info(info);
449 if (IS_ERR(rdev)) {
450 result = PTR_ERR(rdev);
451 goto unlock;
452 }
453
454 mutex_lock(&rdev->mtx);
455
456 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
Jouni Malinen31888482008-10-30 16:59:24 +0200457 result = cfg80211_dev_rename(
458 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
Johannes Berg4bbf4d52009-03-24 09:35:46 +0100459
460 mutex_unlock(&cfg80211_mutex);
461
462 if (result)
463 goto bad_res;
Johannes Berg55682962007-09-20 13:09:35 -0400464
Jouni Malinen31888482008-10-30 16:59:24 +0200465 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
466 struct ieee80211_txq_params txq_params;
467 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
468
469 if (!rdev->ops->set_txq_params) {
470 result = -EOPNOTSUPP;
471 goto bad_res;
472 }
473
474 nla_for_each_nested(nl_txq_params,
475 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
476 rem_txq_params) {
477 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
478 nla_data(nl_txq_params),
479 nla_len(nl_txq_params),
480 txq_params_policy);
481 result = parse_txq_params(tb, &txq_params);
482 if (result)
483 goto bad_res;
484
485 result = rdev->ops->set_txq_params(&rdev->wiphy,
486 &txq_params);
487 if (result)
488 goto bad_res;
489 }
490 }
491
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200492 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
Sujith094d05d2008-12-12 11:57:43 +0530493 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200494 struct ieee80211_channel *chan;
Johannes Berg306d6112008-12-08 12:39:04 +0100495 struct ieee80211_sta_ht_cap *ht_cap;
Luis R. Rodriguez294196a2009-05-02 00:37:20 -0400496 u32 freq;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200497
498 if (!rdev->ops->set_channel) {
499 result = -EOPNOTSUPP;
500 goto bad_res;
501 }
502
Johannes Berg306d6112008-12-08 12:39:04 +0100503 result = -EINVAL;
504
Sujith094d05d2008-12-12 11:57:43 +0530505 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
506 channel_type = nla_get_u32(info->attrs[
507 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
508 if (channel_type != NL80211_CHAN_NO_HT &&
509 channel_type != NL80211_CHAN_HT20 &&
510 channel_type != NL80211_CHAN_HT40PLUS &&
511 channel_type != NL80211_CHAN_HT40MINUS)
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200512 goto bad_res;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200513 }
514
515 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
516 chan = ieee80211_get_channel(&rdev->wiphy, freq);
Johannes Berg306d6112008-12-08 12:39:04 +0100517
518 /* Primary channel not allowed */
519 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200520 goto bad_res;
Johannes Berg306d6112008-12-08 12:39:04 +0100521
Luis R. Rodriguez294196a2009-05-02 00:37:20 -0400522 if (channel_type == NL80211_CHAN_HT40MINUS &&
523 (chan->flags & IEEE80211_CHAN_NO_HT40MINUS))
524 goto bad_res;
525 else if (channel_type == NL80211_CHAN_HT40PLUS &&
526 (chan->flags & IEEE80211_CHAN_NO_HT40PLUS))
527 goto bad_res;
528
529 /*
530 * At this point we know if that if HT40 was requested
531 * we are allowed to use it and the extension channel
532 * exists.
533 */
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200534
Johannes Berg306d6112008-12-08 12:39:04 +0100535 ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap;
536
Luis R. Rodriguez294196a2009-05-02 00:37:20 -0400537 /* no HT capabilities or intolerant */
538 if (channel_type != NL80211_CHAN_NO_HT) {
539 if (!ht_cap->ht_supported)
540 goto bad_res;
Johannes Berg306d6112008-12-08 12:39:04 +0100541 if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) ||
542 (ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT))
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200543 goto bad_res;
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200544 }
545
546 result = rdev->ops->set_channel(&rdev->wiphy, chan,
Sujith094d05d2008-12-12 11:57:43 +0530547 channel_type);
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200548 if (result)
549 goto bad_res;
550 }
551
Jouni Malinenb9a5f8ca2009-04-20 18:39:05 +0200552 changed = 0;
553
554 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
555 retry_short = nla_get_u8(
556 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
557 if (retry_short == 0) {
558 result = -EINVAL;
559 goto bad_res;
560 }
561 changed |= WIPHY_PARAM_RETRY_SHORT;
562 }
563
564 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
565 retry_long = nla_get_u8(
566 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
567 if (retry_long == 0) {
568 result = -EINVAL;
569 goto bad_res;
570 }
571 changed |= WIPHY_PARAM_RETRY_LONG;
572 }
573
574 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
575 frag_threshold = nla_get_u32(
576 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
577 if (frag_threshold < 256) {
578 result = -EINVAL;
579 goto bad_res;
580 }
581 if (frag_threshold != (u32) -1) {
582 /*
583 * Fragments (apart from the last one) are required to
584 * have even length. Make the fragmentation code
585 * simpler by stripping LSB should someone try to use
586 * odd threshold value.
587 */
588 frag_threshold &= ~0x1;
589 }
590 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
591 }
592
593 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
594 rts_threshold = nla_get_u32(
595 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
596 changed |= WIPHY_PARAM_RTS_THRESHOLD;
597 }
598
599 if (changed) {
600 u8 old_retry_short, old_retry_long;
601 u32 old_frag_threshold, old_rts_threshold;
602
603 if (!rdev->ops->set_wiphy_params) {
604 result = -EOPNOTSUPP;
605 goto bad_res;
606 }
607
608 old_retry_short = rdev->wiphy.retry_short;
609 old_retry_long = rdev->wiphy.retry_long;
610 old_frag_threshold = rdev->wiphy.frag_threshold;
611 old_rts_threshold = rdev->wiphy.rts_threshold;
612
613 if (changed & WIPHY_PARAM_RETRY_SHORT)
614 rdev->wiphy.retry_short = retry_short;
615 if (changed & WIPHY_PARAM_RETRY_LONG)
616 rdev->wiphy.retry_long = retry_long;
617 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
618 rdev->wiphy.frag_threshold = frag_threshold;
619 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
620 rdev->wiphy.rts_threshold = rts_threshold;
621
622 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
623 if (result) {
624 rdev->wiphy.retry_short = old_retry_short;
625 rdev->wiphy.retry_long = old_retry_long;
626 rdev->wiphy.frag_threshold = old_frag_threshold;
627 rdev->wiphy.rts_threshold = old_rts_threshold;
628 }
629 }
Jouni Malinen72bdcf32008-11-26 16:15:24 +0200630
Johannes Berg306d6112008-12-08 12:39:04 +0100631 bad_res:
Johannes Berg4bbf4d52009-03-24 09:35:46 +0100632 mutex_unlock(&rdev->mtx);
633 unlock:
634 rtnl_unlock();
Johannes Berg55682962007-09-20 13:09:35 -0400635 return result;
636}
637
638
639static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
Johannes Bergd7264052009-04-19 16:23:20 +0200640 struct cfg80211_registered_device *rdev,
Johannes Berg55682962007-09-20 13:09:35 -0400641 struct net_device *dev)
642{
643 void *hdr;
644
645 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
646 if (!hdr)
647 return -1;
648
649 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
Johannes Bergd7264052009-04-19 16:23:20 +0200650 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
Johannes Berg55682962007-09-20 13:09:35 -0400651 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
Johannes Berg60719ff2008-09-16 14:55:09 +0200652 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
Johannes Berg55682962007-09-20 13:09:35 -0400653 return genlmsg_end(msg, hdr);
654
655 nla_put_failure:
Thomas Grafbc3ed282008-06-03 16:36:54 -0700656 genlmsg_cancel(msg, hdr);
657 return -EMSGSIZE;
Johannes Berg55682962007-09-20 13:09:35 -0400658}
659
660static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
661{
662 int wp_idx = 0;
663 int if_idx = 0;
664 int wp_start = cb->args[0];
665 int if_start = cb->args[1];
666 struct cfg80211_registered_device *dev;
667 struct wireless_dev *wdev;
668
Luis R. Rodrigueza1794392009-02-21 00:04:21 -0500669 mutex_lock(&cfg80211_mutex);
Johannes Berg55682962007-09-20 13:09:35 -0400670 list_for_each_entry(dev, &cfg80211_drv_list, list) {
Johannes Bergbba95fe2008-07-29 13:22:51 +0200671 if (wp_idx < wp_start) {
672 wp_idx++;
Johannes Berg55682962007-09-20 13:09:35 -0400673 continue;
Johannes Bergbba95fe2008-07-29 13:22:51 +0200674 }
Johannes Berg55682962007-09-20 13:09:35 -0400675 if_idx = 0;
676
677 mutex_lock(&dev->devlist_mtx);
678 list_for_each_entry(wdev, &dev->netdev_list, list) {
Johannes Bergbba95fe2008-07-29 13:22:51 +0200679 if (if_idx < if_start) {
680 if_idx++;
Johannes Berg55682962007-09-20 13:09:35 -0400681 continue;
Johannes Bergbba95fe2008-07-29 13:22:51 +0200682 }
Johannes Berg55682962007-09-20 13:09:35 -0400683 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
684 cb->nlh->nlmsg_seq, NLM_F_MULTI,
Johannes Bergd7264052009-04-19 16:23:20 +0200685 dev, wdev->netdev) < 0) {
Johannes Bergbba95fe2008-07-29 13:22:51 +0200686 mutex_unlock(&dev->devlist_mtx);
687 goto out;
688 }
689 if_idx++;
Johannes Berg55682962007-09-20 13:09:35 -0400690 }
691 mutex_unlock(&dev->devlist_mtx);
Johannes Bergbba95fe2008-07-29 13:22:51 +0200692
693 wp_idx++;
Johannes Berg55682962007-09-20 13:09:35 -0400694 }
Johannes Bergbba95fe2008-07-29 13:22:51 +0200695 out:
Luis R. Rodrigueza1794392009-02-21 00:04:21 -0500696 mutex_unlock(&cfg80211_mutex);
Johannes Berg55682962007-09-20 13:09:35 -0400697
698 cb->args[0] = wp_idx;
699 cb->args[1] = if_idx;
700
701 return skb->len;
702}
703
704static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
705{
706 struct sk_buff *msg;
707 struct cfg80211_registered_device *dev;
708 struct net_device *netdev;
709 int err;
710
Johannes Bergbba95fe2008-07-29 13:22:51 +0200711 err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev);
Johannes Berg55682962007-09-20 13:09:35 -0400712 if (err)
713 return err;
714
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -0700715 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
Johannes Berg55682962007-09-20 13:09:35 -0400716 if (!msg)
717 goto out_err;
718
Johannes Bergd7264052009-04-19 16:23:20 +0200719 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
720 dev, netdev) < 0)
Johannes Berg55682962007-09-20 13:09:35 -0400721 goto out_free;
722
723 dev_put(netdev);
724 cfg80211_put_dev(dev);
725
726 return genlmsg_unicast(msg, info->snd_pid);
727
728 out_free:
729 nlmsg_free(msg);
730 out_err:
731 dev_put(netdev);
732 cfg80211_put_dev(dev);
733 return -ENOBUFS;
734}
735
Michael Wu66f7ac52008-01-31 19:48:22 +0100736static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
737 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
738 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
739 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
740 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
741 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
742};
743
744static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
745{
746 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
747 int flag;
748
749 *mntrflags = 0;
750
751 if (!nla)
752 return -EINVAL;
753
754 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
755 nla, mntr_flags_policy))
756 return -EINVAL;
757
758 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
759 if (flags[flag])
760 *mntrflags |= (1<<flag);
761
762 return 0;
763}
764
Johannes Berg55682962007-09-20 13:09:35 -0400765static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
766{
767 struct cfg80211_registered_device *drv;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +0100768 struct vif_params params;
Johannes Berg55682962007-09-20 13:09:35 -0400769 int err, ifindex;
Johannes Berg04a773a2009-04-19 21:24:32 +0200770 enum nl80211_iftype otype, ntype;
Johannes Berg55682962007-09-20 13:09:35 -0400771 struct net_device *dev;
Johannes Berg92ffe052008-09-16 20:39:36 +0200772 u32 _flags, *flags = NULL;
Johannes Bergac7f9cf2009-03-21 17:07:59 +0100773 bool change = false;
Johannes Berg55682962007-09-20 13:09:35 -0400774
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +0100775 memset(&params, 0, sizeof(params));
776
Johannes Berg3b858752009-03-12 09:55:09 +0100777 rtnl_lock();
778
Johannes Bergbba95fe2008-07-29 13:22:51 +0200779 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Johannes Berg55682962007-09-20 13:09:35 -0400780 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +0100781 goto unlock_rtnl;
782
Johannes Berg55682962007-09-20 13:09:35 -0400783 ifindex = dev->ifindex;
Johannes Berg04a773a2009-04-19 21:24:32 +0200784 otype = ntype = dev->ieee80211_ptr->iftype;
Johannes Berg55682962007-09-20 13:09:35 -0400785 dev_put(dev);
786
Johannes Berg723b0382008-09-16 20:22:09 +0200787 if (info->attrs[NL80211_ATTR_IFTYPE]) {
Johannes Bergac7f9cf2009-03-21 17:07:59 +0100788 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
Johannes Berg04a773a2009-04-19 21:24:32 +0200789 if (otype != ntype)
Johannes Bergac7f9cf2009-03-21 17:07:59 +0100790 change = true;
Johannes Berg04a773a2009-04-19 21:24:32 +0200791 if (ntype > NL80211_IFTYPE_MAX) {
Johannes Bergac7f9cf2009-03-21 17:07:59 +0100792 err = -EINVAL;
Johannes Berg723b0382008-09-16 20:22:09 +0200793 goto unlock;
Johannes Bergac7f9cf2009-03-21 17:07:59 +0100794 }
Johannes Berg723b0382008-09-16 20:22:09 +0200795 }
796
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700797 if (!drv->ops->change_virtual_intf ||
Johannes Berg04a773a2009-04-19 21:24:32 +0200798 !(drv->wiphy.interface_modes & (1 << ntype))) {
Johannes Berg55682962007-09-20 13:09:35 -0400799 err = -EOPNOTSUPP;
800 goto unlock;
801 }
802
Johannes Berg92ffe052008-09-16 20:39:36 +0200803 if (info->attrs[NL80211_ATTR_MESH_ID]) {
Johannes Berg04a773a2009-04-19 21:24:32 +0200804 if (ntype != NL80211_IFTYPE_MESH_POINT) {
Johannes Berg92ffe052008-09-16 20:39:36 +0200805 err = -EINVAL;
806 goto unlock;
807 }
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +0100808 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
809 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
Johannes Bergac7f9cf2009-03-21 17:07:59 +0100810 change = true;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +0100811 }
812
Johannes Berg92ffe052008-09-16 20:39:36 +0200813 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
Johannes Berg04a773a2009-04-19 21:24:32 +0200814 if (ntype != NL80211_IFTYPE_MONITOR) {
Johannes Berg92ffe052008-09-16 20:39:36 +0200815 err = -EINVAL;
816 goto unlock;
817 }
818 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
819 &_flags);
Johannes Bergac7f9cf2009-03-21 17:07:59 +0100820 if (err)
821 goto unlock;
822
823 flags = &_flags;
824 change = true;
Johannes Berg92ffe052008-09-16 20:39:36 +0200825 }
Johannes Berg3b858752009-03-12 09:55:09 +0100826
Johannes Bergac7f9cf2009-03-21 17:07:59 +0100827 if (change)
828 err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
Johannes Berg04a773a2009-04-19 21:24:32 +0200829 ntype, flags, &params);
Johannes Bergac7f9cf2009-03-21 17:07:59 +0100830 else
831 err = 0;
Johannes Berg60719ff2008-09-16 14:55:09 +0200832
833 dev = __dev_get_by_index(&init_net, ifindex);
Johannes Berg04a773a2009-04-19 21:24:32 +0200834 WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != ntype));
835
836 if (dev && !err && (ntype != otype)) {
837 if (otype == NL80211_IFTYPE_ADHOC)
Johannes Berg9d308422009-04-20 18:43:46 +0200838 cfg80211_clear_ibss(dev, false);
Johannes Berg04a773a2009-04-19 21:24:32 +0200839 }
Johannes Berg60719ff2008-09-16 14:55:09 +0200840
Johannes Berg55682962007-09-20 13:09:35 -0400841 unlock:
842 cfg80211_put_dev(drv);
Johannes Berg3b858752009-03-12 09:55:09 +0100843 unlock_rtnl:
844 rtnl_unlock();
Johannes Berg55682962007-09-20 13:09:35 -0400845 return err;
846}
847
848static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
849{
850 struct cfg80211_registered_device *drv;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +0100851 struct vif_params params;
Johannes Berg55682962007-09-20 13:09:35 -0400852 int err;
853 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
Michael Wu66f7ac52008-01-31 19:48:22 +0100854 u32 flags;
Johannes Berg55682962007-09-20 13:09:35 -0400855
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +0100856 memset(&params, 0, sizeof(params));
857
Johannes Berg55682962007-09-20 13:09:35 -0400858 if (!info->attrs[NL80211_ATTR_IFNAME])
859 return -EINVAL;
860
861 if (info->attrs[NL80211_ATTR_IFTYPE]) {
862 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
863 if (type > NL80211_IFTYPE_MAX)
864 return -EINVAL;
865 }
866
Johannes Berg3b858752009-03-12 09:55:09 +0100867 rtnl_lock();
868
Johannes Berg55682962007-09-20 13:09:35 -0400869 drv = cfg80211_get_dev_from_info(info);
Johannes Berg3b858752009-03-12 09:55:09 +0100870 if (IS_ERR(drv)) {
871 err = PTR_ERR(drv);
872 goto unlock_rtnl;
873 }
Johannes Berg55682962007-09-20 13:09:35 -0400874
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -0700875 if (!drv->ops->add_virtual_intf ||
876 !(drv->wiphy.interface_modes & (1 << type))) {
Johannes Berg55682962007-09-20 13:09:35 -0400877 err = -EOPNOTSUPP;
878 goto unlock;
879 }
880
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +0100881 if (type == NL80211_IFTYPE_MESH_POINT &&
882 info->attrs[NL80211_ATTR_MESH_ID]) {
883 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
884 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
885 }
886
Michael Wu66f7ac52008-01-31 19:48:22 +0100887 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
888 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
889 &flags);
Johannes Berg55682962007-09-20 13:09:35 -0400890 err = drv->ops->add_virtual_intf(&drv->wiphy,
Michael Wu66f7ac52008-01-31 19:48:22 +0100891 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +0100892 type, err ? NULL : &flags, &params);
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +0100893
Johannes Berg55682962007-09-20 13:09:35 -0400894 unlock:
895 cfg80211_put_dev(drv);
Johannes Berg3b858752009-03-12 09:55:09 +0100896 unlock_rtnl:
897 rtnl_unlock();
Johannes Berg55682962007-09-20 13:09:35 -0400898 return err;
899}
900
901static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
902{
903 struct cfg80211_registered_device *drv;
904 int ifindex, err;
905 struct net_device *dev;
906
Johannes Berg3b858752009-03-12 09:55:09 +0100907 rtnl_lock();
908
Johannes Bergbba95fe2008-07-29 13:22:51 +0200909 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Johannes Berg55682962007-09-20 13:09:35 -0400910 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +0100911 goto unlock_rtnl;
Johannes Berg55682962007-09-20 13:09:35 -0400912 ifindex = dev->ifindex;
913 dev_put(dev);
914
915 if (!drv->ops->del_virtual_intf) {
916 err = -EOPNOTSUPP;
917 goto out;
918 }
919
Johannes Berg55682962007-09-20 13:09:35 -0400920 err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex);
Johannes Berg55682962007-09-20 13:09:35 -0400921
922 out:
923 cfg80211_put_dev(drv);
Johannes Berg3b858752009-03-12 09:55:09 +0100924 unlock_rtnl:
925 rtnl_unlock();
Johannes Berg55682962007-09-20 13:09:35 -0400926 return err;
927}
928
Johannes Berg41ade002007-12-19 02:03:29 +0100929struct get_key_cookie {
930 struct sk_buff *msg;
931 int error;
932};
933
934static void get_key_callback(void *c, struct key_params *params)
935{
936 struct get_key_cookie *cookie = c;
937
938 if (params->key)
939 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
940 params->key_len, params->key);
941
942 if (params->seq)
943 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
944 params->seq_len, params->seq);
945
946 if (params->cipher)
947 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
948 params->cipher);
949
950 return;
951 nla_put_failure:
952 cookie->error = 1;
953}
954
955static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
956{
957 struct cfg80211_registered_device *drv;
958 int err;
959 struct net_device *dev;
960 u8 key_idx = 0;
961 u8 *mac_addr = NULL;
962 struct get_key_cookie cookie = {
963 .error = 0,
964 };
965 void *hdr;
966 struct sk_buff *msg;
967
968 if (info->attrs[NL80211_ATTR_KEY_IDX])
969 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
970
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +0200971 if (key_idx > 5)
Johannes Berg41ade002007-12-19 02:03:29 +0100972 return -EINVAL;
973
974 if (info->attrs[NL80211_ATTR_MAC])
975 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
976
Johannes Berg3b858752009-03-12 09:55:09 +0100977 rtnl_lock();
978
Johannes Bergbba95fe2008-07-29 13:22:51 +0200979 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Johannes Berg41ade002007-12-19 02:03:29 +0100980 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +0100981 goto unlock_rtnl;
Johannes Berg41ade002007-12-19 02:03:29 +0100982
983 if (!drv->ops->get_key) {
984 err = -EOPNOTSUPP;
985 goto out;
986 }
987
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -0700988 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
Johannes Berg41ade002007-12-19 02:03:29 +0100989 if (!msg) {
990 err = -ENOMEM;
991 goto out;
992 }
993
994 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
995 NL80211_CMD_NEW_KEY);
996
997 if (IS_ERR(hdr)) {
998 err = PTR_ERR(hdr);
999 goto out;
1000 }
1001
1002 cookie.msg = msg;
1003
1004 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1005 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1006 if (mac_addr)
1007 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1008
Johannes Berg41ade002007-12-19 02:03:29 +01001009 err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr,
1010 &cookie, get_key_callback);
Johannes Berg41ade002007-12-19 02:03:29 +01001011
1012 if (err)
1013 goto out;
1014
1015 if (cookie.error)
1016 goto nla_put_failure;
1017
1018 genlmsg_end(msg, hdr);
1019 err = genlmsg_unicast(msg, info->snd_pid);
1020 goto out;
1021
1022 nla_put_failure:
1023 err = -ENOBUFS;
1024 nlmsg_free(msg);
1025 out:
1026 cfg80211_put_dev(drv);
1027 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001028 unlock_rtnl:
1029 rtnl_unlock();
1030
Johannes Berg41ade002007-12-19 02:03:29 +01001031 return err;
1032}
1033
1034static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1035{
1036 struct cfg80211_registered_device *drv;
1037 int err;
1038 struct net_device *dev;
1039 u8 key_idx;
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +02001040 int (*func)(struct wiphy *wiphy, struct net_device *netdev,
1041 u8 key_index);
Johannes Berg41ade002007-12-19 02:03:29 +01001042
1043 if (!info->attrs[NL80211_ATTR_KEY_IDX])
1044 return -EINVAL;
1045
1046 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1047
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +02001048 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) {
1049 if (key_idx < 4 || key_idx > 5)
1050 return -EINVAL;
1051 } else if (key_idx > 3)
Johannes Berg41ade002007-12-19 02:03:29 +01001052 return -EINVAL;
1053
1054 /* currently only support setting default key */
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +02001055 if (!info->attrs[NL80211_ATTR_KEY_DEFAULT] &&
1056 !info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT])
Johannes Berg41ade002007-12-19 02:03:29 +01001057 return -EINVAL;
1058
Johannes Berg3b858752009-03-12 09:55:09 +01001059 rtnl_lock();
1060
Johannes Bergbba95fe2008-07-29 13:22:51 +02001061 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Johannes Berg41ade002007-12-19 02:03:29 +01001062 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01001063 goto unlock_rtnl;
Johannes Berg41ade002007-12-19 02:03:29 +01001064
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +02001065 if (info->attrs[NL80211_ATTR_KEY_DEFAULT])
1066 func = drv->ops->set_default_key;
1067 else
1068 func = drv->ops->set_default_mgmt_key;
1069
1070 if (!func) {
Johannes Berg41ade002007-12-19 02:03:29 +01001071 err = -EOPNOTSUPP;
1072 goto out;
1073 }
1074
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +02001075 err = func(&drv->wiphy, dev, key_idx);
Johannes Berg08645122009-05-11 13:54:58 +02001076#ifdef CONFIG_WIRELESS_EXT
1077 if (!err) {
1078 if (func == drv->ops->set_default_key)
1079 dev->ieee80211_ptr->wext.default_key = key_idx;
1080 else
1081 dev->ieee80211_ptr->wext.default_mgmt_key = key_idx;
1082 }
1083#endif
Johannes Berg41ade002007-12-19 02:03:29 +01001084
1085 out:
1086 cfg80211_put_dev(drv);
1087 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001088
1089 unlock_rtnl:
1090 rtnl_unlock();
1091
Johannes Berg41ade002007-12-19 02:03:29 +01001092 return err;
1093}
1094
1095static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1096{
1097 struct cfg80211_registered_device *drv;
Johannes Berg25e47c182009-04-02 20:14:06 +02001098 int err, i;
Johannes Berg41ade002007-12-19 02:03:29 +01001099 struct net_device *dev;
1100 struct key_params params;
1101 u8 key_idx = 0;
1102 u8 *mac_addr = NULL;
1103
1104 memset(&params, 0, sizeof(params));
1105
1106 if (!info->attrs[NL80211_ATTR_KEY_CIPHER])
1107 return -EINVAL;
1108
1109 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1110 params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1111 params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1112 }
1113
Jouni Malinenfaa8fdc2009-05-11 21:57:58 +03001114 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1115 params.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1116 params.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1117 }
1118
Johannes Berg41ade002007-12-19 02:03:29 +01001119 if (info->attrs[NL80211_ATTR_KEY_IDX])
1120 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1121
1122 params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1123
1124 if (info->attrs[NL80211_ATTR_MAC])
1125 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1126
Johannes Berg08645122009-05-11 13:54:58 +02001127 if (cfg80211_validate_key_settings(&params, key_idx, mac_addr))
Johannes Berg41ade002007-12-19 02:03:29 +01001128 return -EINVAL;
1129
Johannes Berg3b858752009-03-12 09:55:09 +01001130 rtnl_lock();
1131
Johannes Bergbba95fe2008-07-29 13:22:51 +02001132 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Johannes Berg41ade002007-12-19 02:03:29 +01001133 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01001134 goto unlock_rtnl;
Johannes Berg41ade002007-12-19 02:03:29 +01001135
Johannes Berg25e47c182009-04-02 20:14:06 +02001136 for (i = 0; i < drv->wiphy.n_cipher_suites; i++)
1137 if (params.cipher == drv->wiphy.cipher_suites[i])
1138 break;
1139 if (i == drv->wiphy.n_cipher_suites) {
1140 err = -EINVAL;
1141 goto out;
1142 }
1143
Johannes Berg41ade002007-12-19 02:03:29 +01001144 if (!drv->ops->add_key) {
1145 err = -EOPNOTSUPP;
1146 goto out;
1147 }
1148
Johannes Berg41ade002007-12-19 02:03:29 +01001149 err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, &params);
Johannes Berg41ade002007-12-19 02:03:29 +01001150
1151 out:
1152 cfg80211_put_dev(drv);
1153 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001154 unlock_rtnl:
1155 rtnl_unlock();
1156
Johannes Berg41ade002007-12-19 02:03:29 +01001157 return err;
1158}
1159
1160static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1161{
1162 struct cfg80211_registered_device *drv;
1163 int err;
1164 struct net_device *dev;
1165 u8 key_idx = 0;
1166 u8 *mac_addr = NULL;
1167
1168 if (info->attrs[NL80211_ATTR_KEY_IDX])
1169 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1170
Jouni Malinen3cfcf6ac2009-01-08 13:32:02 +02001171 if (key_idx > 5)
Johannes Berg41ade002007-12-19 02:03:29 +01001172 return -EINVAL;
1173
1174 if (info->attrs[NL80211_ATTR_MAC])
1175 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1176
Johannes Berg3b858752009-03-12 09:55:09 +01001177 rtnl_lock();
1178
Johannes Bergbba95fe2008-07-29 13:22:51 +02001179 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Johannes Berg41ade002007-12-19 02:03:29 +01001180 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01001181 goto unlock_rtnl;
Johannes Berg41ade002007-12-19 02:03:29 +01001182
1183 if (!drv->ops->del_key) {
1184 err = -EOPNOTSUPP;
1185 goto out;
1186 }
1187
Johannes Berg41ade002007-12-19 02:03:29 +01001188 err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr);
Johannes Berg41ade002007-12-19 02:03:29 +01001189
Johannes Berg08645122009-05-11 13:54:58 +02001190#ifdef CONFIG_WIRELESS_EXT
1191 if (!err) {
1192 if (key_idx == dev->ieee80211_ptr->wext.default_key)
1193 dev->ieee80211_ptr->wext.default_key = -1;
1194 else if (key_idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1195 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1196 }
1197#endif
1198
Johannes Berg41ade002007-12-19 02:03:29 +01001199 out:
1200 cfg80211_put_dev(drv);
1201 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001202
1203 unlock_rtnl:
1204 rtnl_unlock();
1205
Johannes Berg41ade002007-12-19 02:03:29 +01001206 return err;
1207}
1208
Johannes Berged1b6cc2007-12-19 02:03:32 +01001209static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1210{
1211 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1212 struct beacon_parameters *info);
1213 struct cfg80211_registered_device *drv;
1214 int err;
1215 struct net_device *dev;
1216 struct beacon_parameters params;
1217 int haveinfo = 0;
1218
Johannes Bergf4a11bb2009-03-27 12:40:28 +01001219 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1220 return -EINVAL;
1221
Johannes Berg3b858752009-03-12 09:55:09 +01001222 rtnl_lock();
1223
Johannes Bergbba95fe2008-07-29 13:22:51 +02001224 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Johannes Berged1b6cc2007-12-19 02:03:32 +01001225 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01001226 goto unlock_rtnl;
Johannes Berged1b6cc2007-12-19 02:03:32 +01001227
Jouni Malineneec60b02009-03-20 21:21:19 +02001228 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1229 err = -EOPNOTSUPP;
1230 goto out;
1231 }
1232
Johannes Berged1b6cc2007-12-19 02:03:32 +01001233 switch (info->genlhdr->cmd) {
1234 case NL80211_CMD_NEW_BEACON:
1235 /* these are required for NEW_BEACON */
1236 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1237 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1238 !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1239 err = -EINVAL;
1240 goto out;
1241 }
1242
1243 call = drv->ops->add_beacon;
1244 break;
1245 case NL80211_CMD_SET_BEACON:
1246 call = drv->ops->set_beacon;
1247 break;
1248 default:
1249 WARN_ON(1);
1250 err = -EOPNOTSUPP;
1251 goto out;
1252 }
1253
1254 if (!call) {
1255 err = -EOPNOTSUPP;
1256 goto out;
1257 }
1258
1259 memset(&params, 0, sizeof(params));
1260
1261 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
1262 params.interval =
1263 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1264 haveinfo = 1;
1265 }
1266
1267 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
1268 params.dtim_period =
1269 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1270 haveinfo = 1;
1271 }
1272
1273 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1274 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1275 params.head_len =
1276 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1277 haveinfo = 1;
1278 }
1279
1280 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1281 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1282 params.tail_len =
1283 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1284 haveinfo = 1;
1285 }
1286
1287 if (!haveinfo) {
1288 err = -EINVAL;
1289 goto out;
1290 }
1291
Johannes Berged1b6cc2007-12-19 02:03:32 +01001292 err = call(&drv->wiphy, dev, &params);
Johannes Berged1b6cc2007-12-19 02:03:32 +01001293
1294 out:
1295 cfg80211_put_dev(drv);
1296 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001297 unlock_rtnl:
1298 rtnl_unlock();
1299
Johannes Berged1b6cc2007-12-19 02:03:32 +01001300 return err;
1301}
1302
1303static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1304{
1305 struct cfg80211_registered_device *drv;
1306 int err;
1307 struct net_device *dev;
1308
Johannes Berg3b858752009-03-12 09:55:09 +01001309 rtnl_lock();
1310
Johannes Bergbba95fe2008-07-29 13:22:51 +02001311 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Johannes Berged1b6cc2007-12-19 02:03:32 +01001312 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01001313 goto unlock_rtnl;
Johannes Berged1b6cc2007-12-19 02:03:32 +01001314
1315 if (!drv->ops->del_beacon) {
1316 err = -EOPNOTSUPP;
1317 goto out;
1318 }
1319
Jouni Malineneec60b02009-03-20 21:21:19 +02001320 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1321 err = -EOPNOTSUPP;
1322 goto out;
1323 }
Johannes Berged1b6cc2007-12-19 02:03:32 +01001324 err = drv->ops->del_beacon(&drv->wiphy, dev);
Johannes Berged1b6cc2007-12-19 02:03:32 +01001325
1326 out:
1327 cfg80211_put_dev(drv);
1328 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001329 unlock_rtnl:
1330 rtnl_unlock();
1331
Johannes Berged1b6cc2007-12-19 02:03:32 +01001332 return err;
1333}
1334
Johannes Berg5727ef12007-12-19 02:03:34 +01001335static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
1336 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
1337 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
1338 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
Jouni Malinen0e467242009-05-11 21:57:55 +03001339 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
Johannes Berg5727ef12007-12-19 02:03:34 +01001340};
1341
Johannes Bergeccb8e82009-05-11 21:57:56 +03001342static int parse_station_flags(struct genl_info *info,
1343 struct station_parameters *params)
Johannes Berg5727ef12007-12-19 02:03:34 +01001344{
1345 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
Johannes Bergeccb8e82009-05-11 21:57:56 +03001346 struct nlattr *nla;
Johannes Berg5727ef12007-12-19 02:03:34 +01001347 int flag;
1348
Johannes Bergeccb8e82009-05-11 21:57:56 +03001349 /*
1350 * Try parsing the new attribute first so userspace
1351 * can specify both for older kernels.
1352 */
1353 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
1354 if (nla) {
1355 struct nl80211_sta_flag_update *sta_flags;
Johannes Berg5727ef12007-12-19 02:03:34 +01001356
Johannes Bergeccb8e82009-05-11 21:57:56 +03001357 sta_flags = nla_data(nla);
1358 params->sta_flags_mask = sta_flags->mask;
1359 params->sta_flags_set = sta_flags->set;
1360 if ((params->sta_flags_mask |
1361 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
1362 return -EINVAL;
1363 return 0;
1364 }
1365
1366 /* if present, parse the old attribute */
1367
1368 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
Johannes Berg5727ef12007-12-19 02:03:34 +01001369 if (!nla)
1370 return 0;
1371
1372 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1373 nla, sta_flags_policy))
1374 return -EINVAL;
1375
Johannes Bergeccb8e82009-05-11 21:57:56 +03001376 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
1377 params->sta_flags_mask &= ~1;
Johannes Berg5727ef12007-12-19 02:03:34 +01001378
1379 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1380 if (flags[flag])
Johannes Bergeccb8e82009-05-11 21:57:56 +03001381 params->sta_flags_set |= (1<<flag);
Johannes Berg5727ef12007-12-19 02:03:34 +01001382
1383 return 0;
1384}
1385
Henning Rogge420e7fa2008-12-11 22:04:19 +01001386static u16 nl80211_calculate_bitrate(struct rate_info *rate)
1387{
1388 int modulation, streams, bitrate;
1389
1390 if (!(rate->flags & RATE_INFO_FLAGS_MCS))
1391 return rate->legacy;
1392
1393 /* the formula below does only work for MCS values smaller than 32 */
1394 if (rate->mcs >= 32)
1395 return 0;
1396
1397 modulation = rate->mcs & 7;
1398 streams = (rate->mcs >> 3) + 1;
1399
1400 bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ?
1401 13500000 : 6500000;
1402
1403 if (modulation < 4)
1404 bitrate *= (modulation + 1);
1405 else if (modulation == 4)
1406 bitrate *= (modulation + 2);
1407 else
1408 bitrate *= (modulation + 3);
1409
1410 bitrate *= streams;
1411
1412 if (rate->flags & RATE_INFO_FLAGS_SHORT_GI)
1413 bitrate = (bitrate / 9) * 10;
1414
1415 /* do NOT round down here */
1416 return (bitrate + 50000) / 100000;
1417}
1418
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001419static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1420 int flags, struct net_device *dev,
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001421 u8 *mac_addr, struct station_info *sinfo)
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001422{
1423 void *hdr;
Henning Rogge420e7fa2008-12-11 22:04:19 +01001424 struct nlattr *sinfoattr, *txrate;
1425 u16 bitrate;
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001426
1427 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1428 if (!hdr)
1429 return -1;
1430
1431 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1432 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1433
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001434 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1435 if (!sinfoattr)
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001436 goto nla_put_failure;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001437 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
1438 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
1439 sinfo->inactive_time);
1440 if (sinfo->filled & STATION_INFO_RX_BYTES)
1441 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
1442 sinfo->rx_bytes);
1443 if (sinfo->filled & STATION_INFO_TX_BYTES)
1444 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1445 sinfo->tx_bytes);
1446 if (sinfo->filled & STATION_INFO_LLID)
1447 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
1448 sinfo->llid);
1449 if (sinfo->filled & STATION_INFO_PLID)
1450 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
1451 sinfo->plid);
1452 if (sinfo->filled & STATION_INFO_PLINK_STATE)
1453 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
1454 sinfo->plink_state);
Henning Rogge420e7fa2008-12-11 22:04:19 +01001455 if (sinfo->filled & STATION_INFO_SIGNAL)
1456 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
1457 sinfo->signal);
1458 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
1459 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
1460 if (!txrate)
1461 goto nla_put_failure;
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001462
Henning Rogge420e7fa2008-12-11 22:04:19 +01001463 /* nl80211_calculate_bitrate will return 0 for mcs >= 32 */
1464 bitrate = nl80211_calculate_bitrate(&sinfo->txrate);
1465 if (bitrate > 0)
1466 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
1467
1468 if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
1469 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
1470 sinfo->txrate.mcs);
1471 if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
1472 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
1473 if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
1474 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
1475
1476 nla_nest_end(msg, txrate);
1477 }
Jouni Malinen98c8a60a2009-02-17 13:24:57 +02001478 if (sinfo->filled & STATION_INFO_RX_PACKETS)
1479 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
1480 sinfo->rx_packets);
1481 if (sinfo->filled & STATION_INFO_TX_PACKETS)
1482 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
1483 sinfo->tx_packets);
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001484 nla_nest_end(msg, sinfoattr);
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001485
1486 return genlmsg_end(msg, hdr);
1487
1488 nla_put_failure:
Thomas Grafbc3ed282008-06-03 16:36:54 -07001489 genlmsg_cancel(msg, hdr);
1490 return -EMSGSIZE;
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001491}
1492
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001493static int nl80211_dump_station(struct sk_buff *skb,
Johannes Bergbba95fe2008-07-29 13:22:51 +02001494 struct netlink_callback *cb)
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001495{
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001496 struct station_info sinfo;
1497 struct cfg80211_registered_device *dev;
Johannes Bergbba95fe2008-07-29 13:22:51 +02001498 struct net_device *netdev;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001499 u8 mac_addr[ETH_ALEN];
Johannes Bergbba95fe2008-07-29 13:22:51 +02001500 int ifidx = cb->args[0];
1501 int sta_idx = cb->args[1];
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001502 int err;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001503
Johannes Bergbba95fe2008-07-29 13:22:51 +02001504 if (!ifidx) {
1505 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1506 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1507 nl80211_policy);
1508 if (err)
1509 return err;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001510
Johannes Bergbba95fe2008-07-29 13:22:51 +02001511 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1512 return -EINVAL;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001513
Johannes Bergbba95fe2008-07-29 13:22:51 +02001514 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1515 if (!ifidx)
1516 return -EINVAL;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001517 }
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001518
Johannes Berg3b858752009-03-12 09:55:09 +01001519 rtnl_lock();
1520
1521 netdev = __dev_get_by_index(&init_net, ifidx);
1522 if (!netdev) {
1523 err = -ENODEV;
1524 goto out_rtnl;
1525 }
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001526
Johannes Bergbba95fe2008-07-29 13:22:51 +02001527 dev = cfg80211_get_dev_from_ifindex(ifidx);
1528 if (IS_ERR(dev)) {
1529 err = PTR_ERR(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001530 goto out_rtnl;
Johannes Bergbba95fe2008-07-29 13:22:51 +02001531 }
1532
1533 if (!dev->ops->dump_station) {
Jouni Malineneec60b02009-03-20 21:21:19 +02001534 err = -EOPNOTSUPP;
Johannes Bergbba95fe2008-07-29 13:22:51 +02001535 goto out_err;
1536 }
1537
Johannes Bergbba95fe2008-07-29 13:22:51 +02001538 while (1) {
1539 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
1540 mac_addr, &sinfo);
1541 if (err == -ENOENT)
1542 break;
1543 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01001544 goto out_err;
Johannes Bergbba95fe2008-07-29 13:22:51 +02001545
1546 if (nl80211_send_station(skb,
1547 NETLINK_CB(cb->skb).pid,
1548 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1549 netdev, mac_addr,
1550 &sinfo) < 0)
1551 goto out;
1552
1553 sta_idx++;
1554 }
1555
1556
1557 out:
1558 cb->args[1] = sta_idx;
1559 err = skb->len;
Johannes Bergbba95fe2008-07-29 13:22:51 +02001560 out_err:
1561 cfg80211_put_dev(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001562 out_rtnl:
1563 rtnl_unlock();
Johannes Bergbba95fe2008-07-29 13:22:51 +02001564
1565 return err;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001566}
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001567
Johannes Berg5727ef12007-12-19 02:03:34 +01001568static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
1569{
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001570 struct cfg80211_registered_device *drv;
1571 int err;
1572 struct net_device *dev;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001573 struct station_info sinfo;
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001574 struct sk_buff *msg;
1575 u8 *mac_addr = NULL;
1576
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001577 memset(&sinfo, 0, sizeof(sinfo));
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001578
1579 if (!info->attrs[NL80211_ATTR_MAC])
1580 return -EINVAL;
1581
1582 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1583
Johannes Berg3b858752009-03-12 09:55:09 +01001584 rtnl_lock();
1585
Johannes Bergbba95fe2008-07-29 13:22:51 +02001586 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001587 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01001588 goto out_rtnl;
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001589
1590 if (!drv->ops->get_station) {
1591 err = -EOPNOTSUPP;
1592 goto out;
1593 }
1594
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001595 err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo);
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001596 if (err)
1597 goto out;
1598
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -07001599 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001600 if (!msg)
1601 goto out;
1602
1603 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001604 dev, mac_addr, &sinfo) < 0)
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001605 goto out_free;
1606
1607 err = genlmsg_unicast(msg, info->snd_pid);
1608 goto out;
1609
1610 out_free:
1611 nlmsg_free(msg);
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001612 out:
1613 cfg80211_put_dev(drv);
1614 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001615 out_rtnl:
1616 rtnl_unlock();
1617
Johannes Bergfd5b74d2007-12-19 02:03:36 +01001618 return err;
Johannes Berg5727ef12007-12-19 02:03:34 +01001619}
1620
1621/*
1622 * Get vlan interface making sure it is on the right wiphy.
1623 */
1624static int get_vlan(struct nlattr *vlanattr,
1625 struct cfg80211_registered_device *rdev,
1626 struct net_device **vlan)
1627{
1628 *vlan = NULL;
1629
1630 if (vlanattr) {
1631 *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr));
1632 if (!*vlan)
1633 return -ENODEV;
1634 if (!(*vlan)->ieee80211_ptr)
1635 return -EINVAL;
1636 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
1637 return -EINVAL;
1638 }
1639 return 0;
1640}
1641
1642static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
1643{
1644 struct cfg80211_registered_device *drv;
1645 int err;
1646 struct net_device *dev;
1647 struct station_parameters params;
1648 u8 *mac_addr = NULL;
1649
1650 memset(&params, 0, sizeof(params));
1651
1652 params.listen_interval = -1;
1653
1654 if (info->attrs[NL80211_ATTR_STA_AID])
1655 return -EINVAL;
1656
1657 if (!info->attrs[NL80211_ATTR_MAC])
1658 return -EINVAL;
1659
1660 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1661
1662 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
1663 params.supported_rates =
1664 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1665 params.supported_rates_len =
1666 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1667 }
1668
1669 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1670 params.listen_interval =
1671 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1672
Jouni Malinen36aedc92008-08-25 11:58:58 +03001673 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1674 params.ht_capa =
1675 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1676
Johannes Bergeccb8e82009-05-11 21:57:56 +03001677 if (parse_station_flags(info, &params))
Johannes Berg5727ef12007-12-19 02:03:34 +01001678 return -EINVAL;
1679
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001680 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
1681 params.plink_action =
1682 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
1683
Johannes Berg3b858752009-03-12 09:55:09 +01001684 rtnl_lock();
1685
Johannes Bergbba95fe2008-07-29 13:22:51 +02001686 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Johannes Berg5727ef12007-12-19 02:03:34 +01001687 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01001688 goto out_rtnl;
Johannes Berg5727ef12007-12-19 02:03:34 +01001689
1690 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
1691 if (err)
1692 goto out;
1693
1694 if (!drv->ops->change_station) {
1695 err = -EOPNOTSUPP;
1696 goto out;
1697 }
1698
Johannes Berg5727ef12007-12-19 02:03:34 +01001699 err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, &params);
Johannes Berg5727ef12007-12-19 02:03:34 +01001700
1701 out:
1702 if (params.vlan)
1703 dev_put(params.vlan);
1704 cfg80211_put_dev(drv);
1705 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001706 out_rtnl:
1707 rtnl_unlock();
1708
Johannes Berg5727ef12007-12-19 02:03:34 +01001709 return err;
1710}
1711
1712static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
1713{
1714 struct cfg80211_registered_device *drv;
1715 int err;
1716 struct net_device *dev;
1717 struct station_parameters params;
1718 u8 *mac_addr = NULL;
1719
1720 memset(&params, 0, sizeof(params));
1721
1722 if (!info->attrs[NL80211_ATTR_MAC])
1723 return -EINVAL;
1724
1725 if (!info->attrs[NL80211_ATTR_STA_AID])
1726 return -EINVAL;
1727
1728 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1729 return -EINVAL;
1730
1731 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
1732 return -EINVAL;
1733
1734 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1735 params.supported_rates =
1736 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1737 params.supported_rates_len =
1738 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1739 params.listen_interval =
1740 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
Johannes Berg51b50fb2009-05-24 16:42:30 +02001741
Johannes Berg16f2e852008-04-07 14:35:46 +02001742 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
Johannes Berg51b50fb2009-05-24 16:42:30 +02001743 if (!params.aid || params.aid > IEEE80211_MAX_AID)
1744 return -EINVAL;
1745
Jouni Malinen36aedc92008-08-25 11:58:58 +03001746 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1747 params.ht_capa =
1748 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
Johannes Berg5727ef12007-12-19 02:03:34 +01001749
Johannes Bergeccb8e82009-05-11 21:57:56 +03001750 if (parse_station_flags(info, &params))
Johannes Berg5727ef12007-12-19 02:03:34 +01001751 return -EINVAL;
1752
Johannes Berg3b858752009-03-12 09:55:09 +01001753 rtnl_lock();
1754
Johannes Bergbba95fe2008-07-29 13:22:51 +02001755 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Johannes Berg5727ef12007-12-19 02:03:34 +01001756 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01001757 goto out_rtnl;
Johannes Berg5727ef12007-12-19 02:03:34 +01001758
Johannes Berge80cf852009-05-11 14:43:13 +02001759 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1760 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN) {
1761 err = -EINVAL;
1762 goto out;
1763 }
1764
Johannes Berg5727ef12007-12-19 02:03:34 +01001765 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, &params.vlan);
1766 if (err)
1767 goto out;
1768
1769 if (!drv->ops->add_station) {
1770 err = -EOPNOTSUPP;
1771 goto out;
1772 }
1773
Jouni Malinen35a8efe2009-03-20 21:21:18 +02001774 if (!netif_running(dev)) {
1775 err = -ENETDOWN;
1776 goto out;
1777 }
1778
Johannes Berg5727ef12007-12-19 02:03:34 +01001779 err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, &params);
Johannes Berg5727ef12007-12-19 02:03:34 +01001780
1781 out:
1782 if (params.vlan)
1783 dev_put(params.vlan);
1784 cfg80211_put_dev(drv);
1785 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001786 out_rtnl:
1787 rtnl_unlock();
1788
Johannes Berg5727ef12007-12-19 02:03:34 +01001789 return err;
1790}
1791
1792static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
1793{
1794 struct cfg80211_registered_device *drv;
1795 int err;
1796 struct net_device *dev;
1797 u8 *mac_addr = NULL;
1798
1799 if (info->attrs[NL80211_ATTR_MAC])
1800 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1801
Johannes Berg3b858752009-03-12 09:55:09 +01001802 rtnl_lock();
1803
Johannes Bergbba95fe2008-07-29 13:22:51 +02001804 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Johannes Berg5727ef12007-12-19 02:03:34 +01001805 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01001806 goto out_rtnl;
Johannes Berg5727ef12007-12-19 02:03:34 +01001807
Johannes Berge80cf852009-05-11 14:43:13 +02001808 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1809 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN) {
1810 err = -EINVAL;
1811 goto out;
1812 }
1813
Johannes Berg5727ef12007-12-19 02:03:34 +01001814 if (!drv->ops->del_station) {
1815 err = -EOPNOTSUPP;
1816 goto out;
1817 }
1818
Johannes Berg5727ef12007-12-19 02:03:34 +01001819 err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
Johannes Berg5727ef12007-12-19 02:03:34 +01001820
1821 out:
1822 cfg80211_put_dev(drv);
1823 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001824 out_rtnl:
1825 rtnl_unlock();
1826
Johannes Berg5727ef12007-12-19 02:03:34 +01001827 return err;
1828}
1829
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001830static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
1831 int flags, struct net_device *dev,
1832 u8 *dst, u8 *next_hop,
1833 struct mpath_info *pinfo)
1834{
1835 void *hdr;
1836 struct nlattr *pinfoattr;
1837
1838 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1839 if (!hdr)
1840 return -1;
1841
1842 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1843 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
1844 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
1845
1846 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
1847 if (!pinfoattr)
1848 goto nla_put_failure;
1849 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
1850 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
1851 pinfo->frame_qlen);
1852 if (pinfo->filled & MPATH_INFO_DSN)
1853 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
1854 pinfo->dsn);
1855 if (pinfo->filled & MPATH_INFO_METRIC)
1856 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
1857 pinfo->metric);
1858 if (pinfo->filled & MPATH_INFO_EXPTIME)
1859 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
1860 pinfo->exptime);
1861 if (pinfo->filled & MPATH_INFO_FLAGS)
1862 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
1863 pinfo->flags);
1864 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
1865 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
1866 pinfo->discovery_timeout);
1867 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
1868 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
1869 pinfo->discovery_retries);
1870
1871 nla_nest_end(msg, pinfoattr);
1872
1873 return genlmsg_end(msg, hdr);
1874
1875 nla_put_failure:
Thomas Grafbc3ed282008-06-03 16:36:54 -07001876 genlmsg_cancel(msg, hdr);
1877 return -EMSGSIZE;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001878}
1879
1880static int nl80211_dump_mpath(struct sk_buff *skb,
Johannes Bergbba95fe2008-07-29 13:22:51 +02001881 struct netlink_callback *cb)
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001882{
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001883 struct mpath_info pinfo;
1884 struct cfg80211_registered_device *dev;
Johannes Bergbba95fe2008-07-29 13:22:51 +02001885 struct net_device *netdev;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001886 u8 dst[ETH_ALEN];
1887 u8 next_hop[ETH_ALEN];
Johannes Bergbba95fe2008-07-29 13:22:51 +02001888 int ifidx = cb->args[0];
1889 int path_idx = cb->args[1];
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001890 int err;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001891
Johannes Bergbba95fe2008-07-29 13:22:51 +02001892 if (!ifidx) {
1893 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1894 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1895 nl80211_policy);
1896 if (err)
1897 return err;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001898
Johannes Bergbba95fe2008-07-29 13:22:51 +02001899 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1900 return -EINVAL;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001901
Johannes Bergbba95fe2008-07-29 13:22:51 +02001902 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1903 if (!ifidx)
1904 return -EINVAL;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001905 }
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001906
Johannes Berg3b858752009-03-12 09:55:09 +01001907 rtnl_lock();
1908
1909 netdev = __dev_get_by_index(&init_net, ifidx);
1910 if (!netdev) {
1911 err = -ENODEV;
1912 goto out_rtnl;
1913 }
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001914
Johannes Bergbba95fe2008-07-29 13:22:51 +02001915 dev = cfg80211_get_dev_from_ifindex(ifidx);
1916 if (IS_ERR(dev)) {
1917 err = PTR_ERR(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001918 goto out_rtnl;
Johannes Bergbba95fe2008-07-29 13:22:51 +02001919 }
1920
1921 if (!dev->ops->dump_mpath) {
Jouni Malineneec60b02009-03-20 21:21:19 +02001922 err = -EOPNOTSUPP;
Johannes Bergbba95fe2008-07-29 13:22:51 +02001923 goto out_err;
1924 }
1925
Jouni Malineneec60b02009-03-20 21:21:19 +02001926 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
1927 err = -EOPNOTSUPP;
1928 goto out;
1929 }
1930
Johannes Bergbba95fe2008-07-29 13:22:51 +02001931 while (1) {
1932 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
1933 dst, next_hop, &pinfo);
1934 if (err == -ENOENT)
1935 break;
1936 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01001937 goto out_err;
Johannes Bergbba95fe2008-07-29 13:22:51 +02001938
1939 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
1940 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1941 netdev, dst, next_hop,
1942 &pinfo) < 0)
1943 goto out;
1944
1945 path_idx++;
1946 }
1947
1948
1949 out:
1950 cb->args[1] = path_idx;
1951 err = skb->len;
Johannes Bergbba95fe2008-07-29 13:22:51 +02001952 out_err:
1953 cfg80211_put_dev(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01001954 out_rtnl:
1955 rtnl_unlock();
Johannes Bergbba95fe2008-07-29 13:22:51 +02001956
1957 return err;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001958}
1959
1960static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
1961{
1962 struct cfg80211_registered_device *drv;
1963 int err;
1964 struct net_device *dev;
1965 struct mpath_info pinfo;
1966 struct sk_buff *msg;
1967 u8 *dst = NULL;
1968 u8 next_hop[ETH_ALEN];
1969
1970 memset(&pinfo, 0, sizeof(pinfo));
1971
1972 if (!info->attrs[NL80211_ATTR_MAC])
1973 return -EINVAL;
1974
1975 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
1976
Johannes Berg3b858752009-03-12 09:55:09 +01001977 rtnl_lock();
1978
Johannes Bergbba95fe2008-07-29 13:22:51 +02001979 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001980 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01001981 goto out_rtnl;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001982
1983 if (!drv->ops->get_mpath) {
1984 err = -EOPNOTSUPP;
1985 goto out;
1986 }
1987
Jouni Malineneec60b02009-03-20 21:21:19 +02001988 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
1989 err = -EOPNOTSUPP;
1990 goto out;
1991 }
1992
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001993 err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001994 if (err)
1995 goto out;
1996
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -07001997 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01001998 if (!msg)
1999 goto out;
2000
2001 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2002 dev, dst, next_hop, &pinfo) < 0)
2003 goto out_free;
2004
2005 err = genlmsg_unicast(msg, info->snd_pid);
2006 goto out;
2007
2008 out_free:
2009 nlmsg_free(msg);
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002010 out:
2011 cfg80211_put_dev(drv);
2012 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01002013 out_rtnl:
2014 rtnl_unlock();
2015
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002016 return err;
2017}
2018
2019static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2020{
2021 struct cfg80211_registered_device *drv;
2022 int err;
2023 struct net_device *dev;
2024 u8 *dst = NULL;
2025 u8 *next_hop = NULL;
2026
2027 if (!info->attrs[NL80211_ATTR_MAC])
2028 return -EINVAL;
2029
2030 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2031 return -EINVAL;
2032
2033 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2034 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2035
Johannes Berg3b858752009-03-12 09:55:09 +01002036 rtnl_lock();
2037
Johannes Bergbba95fe2008-07-29 13:22:51 +02002038 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002039 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01002040 goto out_rtnl;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002041
2042 if (!drv->ops->change_mpath) {
2043 err = -EOPNOTSUPP;
2044 goto out;
2045 }
2046
Jouni Malineneec60b02009-03-20 21:21:19 +02002047 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2048 err = -EOPNOTSUPP;
2049 goto out;
2050 }
2051
Jouni Malinen35a8efe2009-03-20 21:21:18 +02002052 if (!netif_running(dev)) {
2053 err = -ENETDOWN;
2054 goto out;
2055 }
2056
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002057 err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002058
2059 out:
2060 cfg80211_put_dev(drv);
2061 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01002062 out_rtnl:
2063 rtnl_unlock();
2064
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002065 return err;
2066}
2067static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2068{
2069 struct cfg80211_registered_device *drv;
2070 int err;
2071 struct net_device *dev;
2072 u8 *dst = NULL;
2073 u8 *next_hop = NULL;
2074
2075 if (!info->attrs[NL80211_ATTR_MAC])
2076 return -EINVAL;
2077
2078 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2079 return -EINVAL;
2080
2081 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2082 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2083
Johannes Berg3b858752009-03-12 09:55:09 +01002084 rtnl_lock();
2085
Johannes Bergbba95fe2008-07-29 13:22:51 +02002086 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002087 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01002088 goto out_rtnl;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002089
2090 if (!drv->ops->add_mpath) {
2091 err = -EOPNOTSUPP;
2092 goto out;
2093 }
2094
Jouni Malineneec60b02009-03-20 21:21:19 +02002095 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2096 err = -EOPNOTSUPP;
2097 goto out;
2098 }
2099
Jouni Malinen35a8efe2009-03-20 21:21:18 +02002100 if (!netif_running(dev)) {
2101 err = -ENETDOWN;
2102 goto out;
2103 }
2104
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002105 err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002106
2107 out:
2108 cfg80211_put_dev(drv);
2109 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01002110 out_rtnl:
2111 rtnl_unlock();
2112
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002113 return err;
2114}
2115
2116static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2117{
2118 struct cfg80211_registered_device *drv;
2119 int err;
2120 struct net_device *dev;
2121 u8 *dst = NULL;
2122
2123 if (info->attrs[NL80211_ATTR_MAC])
2124 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2125
Johannes Berg3b858752009-03-12 09:55:09 +01002126 rtnl_lock();
2127
Johannes Bergbba95fe2008-07-29 13:22:51 +02002128 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002129 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01002130 goto out_rtnl;
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002131
2132 if (!drv->ops->del_mpath) {
2133 err = -EOPNOTSUPP;
2134 goto out;
2135 }
2136
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002137 err = drv->ops->del_mpath(&drv->wiphy, dev, dst);
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002138
2139 out:
2140 cfg80211_put_dev(drv);
2141 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01002142 out_rtnl:
2143 rtnl_unlock();
2144
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01002145 return err;
2146}
2147
Jouni Malinen9f1ba902008-08-07 20:07:01 +03002148static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2149{
2150 struct cfg80211_registered_device *drv;
2151 int err;
2152 struct net_device *dev;
2153 struct bss_parameters params;
2154
2155 memset(&params, 0, sizeof(params));
2156 /* default to not changing parameters */
2157 params.use_cts_prot = -1;
2158 params.use_short_preamble = -1;
2159 params.use_short_slot_time = -1;
2160
2161 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2162 params.use_cts_prot =
2163 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2164 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2165 params.use_short_preamble =
2166 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2167 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2168 params.use_short_slot_time =
2169 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
Jouni Malinen90c97a02008-10-30 16:59:22 +02002170 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2171 params.basic_rates =
2172 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2173 params.basic_rates_len =
2174 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2175 }
Jouni Malinen9f1ba902008-08-07 20:07:01 +03002176
Johannes Berg3b858752009-03-12 09:55:09 +01002177 rtnl_lock();
2178
Jouni Malinen9f1ba902008-08-07 20:07:01 +03002179 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2180 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01002181 goto out_rtnl;
Jouni Malinen9f1ba902008-08-07 20:07:01 +03002182
2183 if (!drv->ops->change_bss) {
2184 err = -EOPNOTSUPP;
2185 goto out;
2186 }
2187
Jouni Malineneec60b02009-03-20 21:21:19 +02002188 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
2189 err = -EOPNOTSUPP;
2190 goto out;
2191 }
2192
Jouni Malinen9f1ba902008-08-07 20:07:01 +03002193 err = drv->ops->change_bss(&drv->wiphy, dev, &params);
Jouni Malinen9f1ba902008-08-07 20:07:01 +03002194
2195 out:
2196 cfg80211_put_dev(drv);
2197 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01002198 out_rtnl:
2199 rtnl_unlock();
2200
Jouni Malinen9f1ba902008-08-07 20:07:01 +03002201 return err;
2202}
2203
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002204static const struct nla_policy
2205 reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2206 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2207 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2208 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2209 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2210 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2211 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2212};
2213
2214static int parse_reg_rule(struct nlattr *tb[],
2215 struct ieee80211_reg_rule *reg_rule)
2216{
2217 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2218 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2219
2220 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2221 return -EINVAL;
2222 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2223 return -EINVAL;
2224 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2225 return -EINVAL;
2226 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2227 return -EINVAL;
2228 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2229 return -EINVAL;
2230
2231 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2232
2233 freq_range->start_freq_khz =
2234 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2235 freq_range->end_freq_khz =
2236 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2237 freq_range->max_bandwidth_khz =
2238 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2239
2240 power_rule->max_eirp =
2241 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2242
2243 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2244 power_rule->max_antenna_gain =
2245 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2246
2247 return 0;
2248}
2249
2250static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2251{
2252 int r;
2253 char *data = NULL;
2254
Luis R. Rodriguez80778f12009-02-21 00:04:22 -05002255 /*
2256 * You should only get this when cfg80211 hasn't yet initialized
2257 * completely when built-in to the kernel right between the time
2258 * window between nl80211_init() and regulatory_init(), if that is
2259 * even possible.
2260 */
2261 mutex_lock(&cfg80211_mutex);
2262 if (unlikely(!cfg80211_regdomain)) {
Luis R. Rodriguezfe33eb32009-02-21 00:04:30 -05002263 mutex_unlock(&cfg80211_mutex);
2264 return -EINPROGRESS;
Luis R. Rodriguez80778f12009-02-21 00:04:22 -05002265 }
Luis R. Rodriguezfe33eb32009-02-21 00:04:30 -05002266 mutex_unlock(&cfg80211_mutex);
Luis R. Rodriguez80778f12009-02-21 00:04:22 -05002267
Luis R. Rodriguezfe33eb32009-02-21 00:04:30 -05002268 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2269 return -EINVAL;
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002270
2271 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2272
2273#ifdef CONFIG_WIRELESS_OLD_REGULATORY
2274 /* We ignore world regdom requests with the old regdom setup */
Luis R. Rodriguezfe33eb32009-02-21 00:04:30 -05002275 if (is_world_regdom(data))
2276 return -EINVAL;
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002277#endif
Luis R. Rodriguezfe33eb32009-02-21 00:04:30 -05002278
2279 r = regulatory_hint_user(data);
2280
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002281 return r;
2282}
2283
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002284static int nl80211_get_mesh_params(struct sk_buff *skb,
2285 struct genl_info *info)
2286{
2287 struct cfg80211_registered_device *drv;
2288 struct mesh_config cur_params;
2289 int err;
2290 struct net_device *dev;
2291 void *hdr;
2292 struct nlattr *pinfoattr;
2293 struct sk_buff *msg;
2294
Johannes Berg3b858752009-03-12 09:55:09 +01002295 rtnl_lock();
2296
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002297 /* Look up our device */
2298 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2299 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01002300 goto out_rtnl;
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002301
Jouni Malinenf3f92582009-03-20 17:57:36 +02002302 if (!drv->ops->get_mesh_params) {
2303 err = -EOPNOTSUPP;
2304 goto out;
2305 }
2306
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002307 /* Get the mesh params */
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002308 err = drv->ops->get_mesh_params(&drv->wiphy, dev, &cur_params);
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002309 if (err)
2310 goto out;
2311
2312 /* Draw up a netlink message to send back */
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -07002313 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002314 if (!msg) {
2315 err = -ENOBUFS;
2316 goto out;
2317 }
2318 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2319 NL80211_CMD_GET_MESH_PARAMS);
2320 if (!hdr)
2321 goto nla_put_failure;
2322 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
2323 if (!pinfoattr)
2324 goto nla_put_failure;
2325 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2326 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2327 cur_params.dot11MeshRetryTimeout);
2328 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2329 cur_params.dot11MeshConfirmTimeout);
2330 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2331 cur_params.dot11MeshHoldingTimeout);
2332 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2333 cur_params.dot11MeshMaxPeerLinks);
2334 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2335 cur_params.dot11MeshMaxRetries);
2336 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2337 cur_params.dot11MeshTTL);
2338 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2339 cur_params.auto_open_plinks);
2340 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2341 cur_params.dot11MeshHWMPmaxPREQretries);
2342 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2343 cur_params.path_refresh_time);
2344 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2345 cur_params.min_discovery_timeout);
2346 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2347 cur_params.dot11MeshHWMPactivePathTimeout);
2348 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2349 cur_params.dot11MeshHWMPpreqMinInterval);
2350 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2351 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2352 nla_nest_end(msg, pinfoattr);
2353 genlmsg_end(msg, hdr);
2354 err = genlmsg_unicast(msg, info->snd_pid);
2355 goto out;
2356
Johannes Berg3b858752009-03-12 09:55:09 +01002357 nla_put_failure:
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002358 genlmsg_cancel(msg, hdr);
2359 err = -EMSGSIZE;
Johannes Berg3b858752009-03-12 09:55:09 +01002360 out:
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002361 /* Cleanup */
2362 cfg80211_put_dev(drv);
2363 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01002364 out_rtnl:
2365 rtnl_unlock();
2366
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002367 return err;
2368}
2369
2370#define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2371do {\
2372 if (table[attr_num]) {\
2373 cfg.param = nla_fn(table[attr_num]); \
2374 mask |= (1 << (attr_num - 1)); \
2375 } \
2376} while (0);\
2377
2378static struct nla_policy
2379nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] __read_mostly = {
2380 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2381 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2382 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2383 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2384 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2385 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2386 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2387
2388 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2389 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2390 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2391 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2392 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2393 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2394};
2395
2396static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
2397{
2398 int err;
2399 u32 mask;
2400 struct cfg80211_registered_device *drv;
2401 struct net_device *dev;
2402 struct mesh_config cfg;
2403 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2404 struct nlattr *parent_attr;
2405
2406 parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
2407 if (!parent_attr)
2408 return -EINVAL;
2409 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2410 parent_attr, nl80211_meshconf_params_policy))
2411 return -EINVAL;
2412
Johannes Berg3b858752009-03-12 09:55:09 +01002413 rtnl_lock();
2414
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002415 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2416 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01002417 goto out_rtnl;
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002418
Jouni Malinenf3f92582009-03-20 17:57:36 +02002419 if (!drv->ops->set_mesh_params) {
2420 err = -EOPNOTSUPP;
2421 goto out;
2422 }
2423
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002424 /* This makes sure that there aren't more than 32 mesh config
2425 * parameters (otherwise our bitfield scheme would not work.) */
2426 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2427
2428 /* Fill in the params struct */
2429 mask = 0;
2430 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2431 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2432 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2433 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2434 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2435 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2436 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2437 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2438 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2439 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2440 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2441 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2442 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2443 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2444 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2445 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2446 nla_get_u8);
2447 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2448 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2449 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2450 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2451 nla_get_u16);
2452 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2453 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2454 nla_get_u32);
2455 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2456 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2457 nla_get_u16);
2458 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2459 dot11MeshHWMPnetDiameterTraversalTime,
2460 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2461 nla_get_u16);
2462
2463 /* Apply changes */
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002464 err = drv->ops->set_mesh_params(&drv->wiphy, dev, &cfg, mask);
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002465
Jouni Malinenf3f92582009-03-20 17:57:36 +02002466 out:
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002467 /* cleanup */
2468 cfg80211_put_dev(drv);
2469 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01002470 out_rtnl:
2471 rtnl_unlock();
2472
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07002473 return err;
2474}
2475
2476#undef FILL_IN_MESH_PARAM_IF_SET
2477
Luis R. Rodriguezf1303472009-01-30 09:26:42 -08002478static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2479{
2480 struct sk_buff *msg;
2481 void *hdr = NULL;
2482 struct nlattr *nl_reg_rules;
2483 unsigned int i;
2484 int err = -EINVAL;
2485
Luis R. Rodrigueza1794392009-02-21 00:04:21 -05002486 mutex_lock(&cfg80211_mutex);
Luis R. Rodriguezf1303472009-01-30 09:26:42 -08002487
2488 if (!cfg80211_regdomain)
2489 goto out;
2490
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -07002491 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
Luis R. Rodriguezf1303472009-01-30 09:26:42 -08002492 if (!msg) {
2493 err = -ENOBUFS;
2494 goto out;
2495 }
2496
2497 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2498 NL80211_CMD_GET_REG);
2499 if (!hdr)
2500 goto nla_put_failure;
2501
2502 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2503 cfg80211_regdomain->alpha2);
2504
2505 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2506 if (!nl_reg_rules)
2507 goto nla_put_failure;
2508
2509 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2510 struct nlattr *nl_reg_rule;
2511 const struct ieee80211_reg_rule *reg_rule;
2512 const struct ieee80211_freq_range *freq_range;
2513 const struct ieee80211_power_rule *power_rule;
2514
2515 reg_rule = &cfg80211_regdomain->reg_rules[i];
2516 freq_range = &reg_rule->freq_range;
2517 power_rule = &reg_rule->power_rule;
2518
2519 nl_reg_rule = nla_nest_start(msg, i);
2520 if (!nl_reg_rule)
2521 goto nla_put_failure;
2522
2523 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2524 reg_rule->flags);
2525 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2526 freq_range->start_freq_khz);
2527 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2528 freq_range->end_freq_khz);
2529 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2530 freq_range->max_bandwidth_khz);
2531 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
2532 power_rule->max_antenna_gain);
2533 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
2534 power_rule->max_eirp);
2535
2536 nla_nest_end(msg, nl_reg_rule);
2537 }
2538
2539 nla_nest_end(msg, nl_reg_rules);
2540
2541 genlmsg_end(msg, hdr);
2542 err = genlmsg_unicast(msg, info->snd_pid);
2543 goto out;
2544
2545nla_put_failure:
2546 genlmsg_cancel(msg, hdr);
2547 err = -EMSGSIZE;
2548out:
Luis R. Rodrigueza1794392009-02-21 00:04:21 -05002549 mutex_unlock(&cfg80211_mutex);
Luis R. Rodriguezf1303472009-01-30 09:26:42 -08002550 return err;
2551}
2552
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002553static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
2554{
2555 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
2556 struct nlattr *nl_reg_rule;
2557 char *alpha2 = NULL;
2558 int rem_reg_rules = 0, r = 0;
2559 u32 num_rules = 0, rule_idx = 0, size_of_regd;
2560 struct ieee80211_regdomain *rd = NULL;
2561
2562 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2563 return -EINVAL;
2564
2565 if (!info->attrs[NL80211_ATTR_REG_RULES])
2566 return -EINVAL;
2567
2568 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2569
2570 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2571 rem_reg_rules) {
2572 num_rules++;
2573 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
Luis R. Rodriguez4776c6e2009-05-13 17:04:39 -04002574 return -EINVAL;
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002575 }
2576
Luis R. Rodriguez61405e92009-05-13 17:04:41 -04002577 mutex_lock(&cfg80211_mutex);
2578
Luis R. Rodriguezd0e18f82009-05-13 17:04:40 -04002579 if (!reg_is_valid_request(alpha2)) {
2580 r = -EINVAL;
2581 goto bad_reg;
2582 }
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002583
2584 size_of_regd = sizeof(struct ieee80211_regdomain) +
2585 (num_rules * sizeof(struct ieee80211_reg_rule));
2586
2587 rd = kzalloc(size_of_regd, GFP_KERNEL);
Luis R. Rodriguezd0e18f82009-05-13 17:04:40 -04002588 if (!rd) {
2589 r = -ENOMEM;
2590 goto bad_reg;
2591 }
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002592
2593 rd->n_reg_rules = num_rules;
2594 rd->alpha2[0] = alpha2[0];
2595 rd->alpha2[1] = alpha2[1];
2596
2597 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2598 rem_reg_rules) {
2599 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
2600 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
2601 reg_rule_policy);
2602 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
2603 if (r)
2604 goto bad_reg;
2605
2606 rule_idx++;
2607
Luis R. Rodriguezd0e18f82009-05-13 17:04:40 -04002608 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
2609 r = -EINVAL;
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002610 goto bad_reg;
Luis R. Rodriguezd0e18f82009-05-13 17:04:40 -04002611 }
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002612 }
2613
2614 BUG_ON(rule_idx != num_rules);
2615
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002616 r = set_regdom(rd);
Luis R. Rodriguez61405e92009-05-13 17:04:41 -04002617
Luis R. Rodrigueza1794392009-02-21 00:04:21 -05002618 mutex_unlock(&cfg80211_mutex);
Luis R. Rodriguezd0e18f82009-05-13 17:04:40 -04002619
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002620 return r;
2621
Johannes Bergd2372b32008-10-24 20:32:20 +02002622 bad_reg:
Luis R. Rodriguez61405e92009-05-13 17:04:41 -04002623 mutex_unlock(&cfg80211_mutex);
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002624 kfree(rd);
Luis R. Rodriguezd0e18f82009-05-13 17:04:40 -04002625 return r;
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07002626}
2627
Johannes Berg2a519312009-02-10 21:25:55 +01002628static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
2629{
2630 struct cfg80211_registered_device *drv;
2631 struct net_device *dev;
2632 struct cfg80211_scan_request *request;
2633 struct cfg80211_ssid *ssid;
2634 struct ieee80211_channel *channel;
2635 struct nlattr *attr;
2636 struct wiphy *wiphy;
2637 int err, tmp, n_ssids = 0, n_channels = 0, i;
2638 enum ieee80211_band band;
Jouni Malinen70692ad2009-02-16 19:39:13 +02002639 size_t ie_len;
Johannes Berg2a519312009-02-10 21:25:55 +01002640
Johannes Bergf4a11bb2009-03-27 12:40:28 +01002641 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2642 return -EINVAL;
2643
Johannes Berg3b858752009-03-12 09:55:09 +01002644 rtnl_lock();
2645
Johannes Berg2a519312009-02-10 21:25:55 +01002646 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2647 if (err)
Johannes Berg3b858752009-03-12 09:55:09 +01002648 goto out_rtnl;
Johannes Berg2a519312009-02-10 21:25:55 +01002649
2650 wiphy = &drv->wiphy;
2651
2652 if (!drv->ops->scan) {
2653 err = -EOPNOTSUPP;
2654 goto out;
2655 }
2656
Jouni Malinen35a8efe2009-03-20 21:21:18 +02002657 if (!netif_running(dev)) {
2658 err = -ENETDOWN;
2659 goto out;
2660 }
2661
Johannes Berg2a519312009-02-10 21:25:55 +01002662 if (drv->scan_req) {
2663 err = -EBUSY;
Johannes Berg3b858752009-03-12 09:55:09 +01002664 goto out;
Johannes Berg2a519312009-02-10 21:25:55 +01002665 }
2666
2667 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2668 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp)
2669 n_channels++;
2670 if (!n_channels) {
2671 err = -EINVAL;
Johannes Berg3b858752009-03-12 09:55:09 +01002672 goto out;
Johannes Berg2a519312009-02-10 21:25:55 +01002673 }
2674 } else {
2675 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
2676 if (wiphy->bands[band])
2677 n_channels += wiphy->bands[band]->n_channels;
2678 }
2679
2680 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
2681 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
2682 n_ssids++;
2683
2684 if (n_ssids > wiphy->max_scan_ssids) {
2685 err = -EINVAL;
Johannes Berg3b858752009-03-12 09:55:09 +01002686 goto out;
Johannes Berg2a519312009-02-10 21:25:55 +01002687 }
2688
Jouni Malinen70692ad2009-02-16 19:39:13 +02002689 if (info->attrs[NL80211_ATTR_IE])
2690 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2691 else
2692 ie_len = 0;
2693
Johannes Berg18a83652009-03-31 12:12:05 +02002694 if (ie_len > wiphy->max_scan_ie_len) {
2695 err = -EINVAL;
2696 goto out;
2697 }
2698
Johannes Berg2a519312009-02-10 21:25:55 +01002699 request = kzalloc(sizeof(*request)
2700 + sizeof(*ssid) * n_ssids
Jouni Malinen70692ad2009-02-16 19:39:13 +02002701 + sizeof(channel) * n_channels
2702 + ie_len, GFP_KERNEL);
Johannes Berg2a519312009-02-10 21:25:55 +01002703 if (!request) {
2704 err = -ENOMEM;
Johannes Berg3b858752009-03-12 09:55:09 +01002705 goto out;
Johannes Berg2a519312009-02-10 21:25:55 +01002706 }
2707
2708 request->channels = (void *)((char *)request + sizeof(*request));
2709 request->n_channels = n_channels;
2710 if (n_ssids)
2711 request->ssids = (void *)(request->channels + n_channels);
2712 request->n_ssids = n_ssids;
Jouni Malinen70692ad2009-02-16 19:39:13 +02002713 if (ie_len) {
2714 if (request->ssids)
2715 request->ie = (void *)(request->ssids + n_ssids);
2716 else
2717 request->ie = (void *)(request->channels + n_channels);
2718 }
Johannes Berg2a519312009-02-10 21:25:55 +01002719
2720 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2721 /* user specified, bail out if channel not found */
2722 request->n_channels = n_channels;
2723 i = 0;
2724 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
2725 request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr));
2726 if (!request->channels[i]) {
2727 err = -EINVAL;
2728 goto out_free;
2729 }
2730 i++;
2731 }
2732 } else {
2733 /* all channels */
2734 i = 0;
2735 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2736 int j;
2737 if (!wiphy->bands[band])
2738 continue;
2739 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
2740 request->channels[i] = &wiphy->bands[band]->channels[j];
2741 i++;
2742 }
2743 }
2744 }
2745
2746 i = 0;
2747 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
2748 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
2749 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
2750 err = -EINVAL;
2751 goto out_free;
2752 }
2753 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
2754 request->ssids[i].ssid_len = nla_len(attr);
2755 i++;
2756 }
2757 }
2758
Jouni Malinen70692ad2009-02-16 19:39:13 +02002759 if (info->attrs[NL80211_ATTR_IE]) {
2760 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
Johannes Bergde95a542009-04-01 11:58:36 +02002761 memcpy((void *)request->ie,
2762 nla_data(info->attrs[NL80211_ATTR_IE]),
Jouni Malinen70692ad2009-02-16 19:39:13 +02002763 request->ie_len);
2764 }
2765
Johannes Berg2a519312009-02-10 21:25:55 +01002766 request->ifidx = dev->ifindex;
2767 request->wiphy = &drv->wiphy;
2768
2769 drv->scan_req = request;
2770 err = drv->ops->scan(&drv->wiphy, dev, request);
2771
2772 out_free:
2773 if (err) {
2774 drv->scan_req = NULL;
2775 kfree(request);
2776 }
Johannes Berg2a519312009-02-10 21:25:55 +01002777 out:
2778 cfg80211_put_dev(drv);
2779 dev_put(dev);
Johannes Berg3b858752009-03-12 09:55:09 +01002780 out_rtnl:
2781 rtnl_unlock();
2782
Johannes Berg2a519312009-02-10 21:25:55 +01002783 return err;
2784}
2785
2786static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
2787 struct cfg80211_registered_device *rdev,
2788 struct net_device *dev,
2789 struct cfg80211_bss *res)
2790{
2791 void *hdr;
2792 struct nlattr *bss;
2793
2794 hdr = nl80211hdr_put(msg, pid, seq, flags,
2795 NL80211_CMD_NEW_SCAN_RESULTS);
2796 if (!hdr)
2797 return -1;
2798
2799 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION,
2800 rdev->bss_generation);
2801 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2802
2803 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
2804 if (!bss)
2805 goto nla_put_failure;
2806 if (!is_zero_ether_addr(res->bssid))
2807 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
2808 if (res->information_elements && res->len_information_elements)
2809 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
2810 res->len_information_elements,
2811 res->information_elements);
2812 if (res->tsf)
2813 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
2814 if (res->beacon_interval)
2815 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
2816 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
2817 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
2818
Johannes Berg77965c92009-02-18 18:45:06 +01002819 switch (rdev->wiphy.signal_type) {
Johannes Berg2a519312009-02-10 21:25:55 +01002820 case CFG80211_SIGNAL_TYPE_MBM:
2821 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
2822 break;
2823 case CFG80211_SIGNAL_TYPE_UNSPEC:
2824 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
2825 break;
2826 default:
2827 break;
2828 }
2829
2830 nla_nest_end(msg, bss);
2831
2832 return genlmsg_end(msg, hdr);
2833
2834 nla_put_failure:
2835 genlmsg_cancel(msg, hdr);
2836 return -EMSGSIZE;
2837}
2838
2839static int nl80211_dump_scan(struct sk_buff *skb,
2840 struct netlink_callback *cb)
2841{
2842 struct cfg80211_registered_device *dev;
2843 struct net_device *netdev;
2844 struct cfg80211_internal_bss *scan;
2845 int ifidx = cb->args[0];
2846 int start = cb->args[1], idx = 0;
2847 int err;
2848
2849 if (!ifidx) {
2850 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
2851 nl80211_fam.attrbuf, nl80211_fam.maxattr,
2852 nl80211_policy);
2853 if (err)
2854 return err;
2855
2856 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
2857 return -EINVAL;
2858
2859 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
2860 if (!ifidx)
2861 return -EINVAL;
2862 cb->args[0] = ifidx;
2863 }
2864
2865 netdev = dev_get_by_index(&init_net, ifidx);
2866 if (!netdev)
2867 return -ENODEV;
2868
2869 dev = cfg80211_get_dev_from_ifindex(ifidx);
2870 if (IS_ERR(dev)) {
2871 err = PTR_ERR(dev);
2872 goto out_put_netdev;
2873 }
2874
2875 spin_lock_bh(&dev->bss_lock);
2876 cfg80211_bss_expire(dev);
2877
2878 list_for_each_entry(scan, &dev->bss_list, list) {
2879 if (++idx <= start)
2880 continue;
2881 if (nl80211_send_bss(skb,
2882 NETLINK_CB(cb->skb).pid,
2883 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2884 dev, netdev, &scan->pub) < 0) {
2885 idx--;
2886 goto out;
2887 }
2888 }
2889
2890 out:
2891 spin_unlock_bh(&dev->bss_lock);
2892
2893 cb->args[1] = idx;
2894 err = skb->len;
2895 cfg80211_put_dev(dev);
2896 out_put_netdev:
2897 dev_put(netdev);
2898
2899 return err;
2900}
2901
Jouni Malinen255e7372009-03-20 21:21:17 +02002902static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
2903{
2904 return auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM ||
2905 auth_type == NL80211_AUTHTYPE_SHARED_KEY ||
2906 auth_type == NL80211_AUTHTYPE_FT ||
2907 auth_type == NL80211_AUTHTYPE_NETWORK_EAP;
2908}
2909
Jouni Malinen636a5d32009-03-19 13:39:22 +02002910static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
2911{
2912 struct cfg80211_registered_device *drv;
2913 struct net_device *dev;
2914 struct cfg80211_auth_request req;
2915 struct wiphy *wiphy;
2916 int err;
2917
Johannes Bergf4a11bb2009-03-27 12:40:28 +01002918 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2919 return -EINVAL;
2920
2921 if (!info->attrs[NL80211_ATTR_MAC])
2922 return -EINVAL;
2923
Jouni Malinen17780922009-03-27 20:52:47 +02002924 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
2925 return -EINVAL;
2926
Jouni Malinen636a5d32009-03-19 13:39:22 +02002927 rtnl_lock();
2928
2929 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2930 if (err)
2931 goto unlock_rtnl;
2932
2933 if (!drv->ops->auth) {
2934 err = -EOPNOTSUPP;
2935 goto out;
2936 }
2937
Jouni Malineneec60b02009-03-20 21:21:19 +02002938 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
2939 err = -EOPNOTSUPP;
2940 goto out;
2941 }
2942
Jouni Malinen35a8efe2009-03-20 21:21:18 +02002943 if (!netif_running(dev)) {
2944 err = -ENETDOWN;
2945 goto out;
2946 }
2947
Jouni Malinen636a5d32009-03-19 13:39:22 +02002948 wiphy = &drv->wiphy;
2949 memset(&req, 0, sizeof(req));
2950
2951 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2952
2953 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2954 req.chan = ieee80211_get_channel(
2955 wiphy,
2956 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
2957 if (!req.chan) {
2958 err = -EINVAL;
2959 goto out;
2960 }
2961 }
2962
2963 if (info->attrs[NL80211_ATTR_SSID]) {
2964 req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2965 req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
2966 }
2967
2968 if (info->attrs[NL80211_ATTR_IE]) {
2969 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
2970 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2971 }
2972
Jouni Malinen17780922009-03-27 20:52:47 +02002973 req.auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
2974 if (!nl80211_valid_auth_type(req.auth_type)) {
2975 err = -EINVAL;
2976 goto out;
Jouni Malinen636a5d32009-03-19 13:39:22 +02002977 }
2978
2979 err = drv->ops->auth(&drv->wiphy, dev, &req);
2980
2981out:
2982 cfg80211_put_dev(drv);
2983 dev_put(dev);
2984unlock_rtnl:
2985 rtnl_unlock();
2986 return err;
2987}
2988
2989static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
2990{
2991 struct cfg80211_registered_device *drv;
2992 struct net_device *dev;
2993 struct cfg80211_assoc_request req;
2994 struct wiphy *wiphy;
2995 int err;
2996
Johannes Bergf4a11bb2009-03-27 12:40:28 +01002997 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2998 return -EINVAL;
2999
3000 if (!info->attrs[NL80211_ATTR_MAC] ||
3001 !info->attrs[NL80211_ATTR_SSID])
3002 return -EINVAL;
3003
Jouni Malinen636a5d32009-03-19 13:39:22 +02003004 rtnl_lock();
3005
3006 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3007 if (err)
3008 goto unlock_rtnl;
3009
3010 if (!drv->ops->assoc) {
3011 err = -EOPNOTSUPP;
3012 goto out;
3013 }
3014
Jouni Malineneec60b02009-03-20 21:21:19 +02003015 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3016 err = -EOPNOTSUPP;
3017 goto out;
3018 }
3019
Jouni Malinen35a8efe2009-03-20 21:21:18 +02003020 if (!netif_running(dev)) {
3021 err = -ENETDOWN;
3022 goto out;
3023 }
3024
Jouni Malinen636a5d32009-03-19 13:39:22 +02003025 wiphy = &drv->wiphy;
3026 memset(&req, 0, sizeof(req));
3027
3028 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3029
3030 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3031 req.chan = ieee80211_get_channel(
3032 wiphy,
3033 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3034 if (!req.chan) {
3035 err = -EINVAL;
3036 goto out;
3037 }
3038 }
3039
Jouni Malinen636a5d32009-03-19 13:39:22 +02003040 req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3041 req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3042
3043 if (info->attrs[NL80211_ATTR_IE]) {
3044 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3045 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3046 }
3047
Jouni Malinendc6382ce2009-05-06 22:09:37 +03003048 if (info->attrs[NL80211_ATTR_USE_MFP]) {
3049 enum nl80211_mfp use_mfp =
3050 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
3051 if (use_mfp == NL80211_MFP_REQUIRED)
3052 req.use_mfp = true;
3053 else if (use_mfp != NL80211_MFP_NO) {
3054 err = -EINVAL;
3055 goto out;
3056 }
3057 }
3058
Jouni Malinen3f77316c2009-05-11 21:57:57 +03003059 req.control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3060
Jouni Malinen636a5d32009-03-19 13:39:22 +02003061 err = drv->ops->assoc(&drv->wiphy, dev, &req);
3062
3063out:
3064 cfg80211_put_dev(drv);
3065 dev_put(dev);
3066unlock_rtnl:
3067 rtnl_unlock();
3068 return err;
3069}
3070
3071static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3072{
3073 struct cfg80211_registered_device *drv;
3074 struct net_device *dev;
3075 struct cfg80211_deauth_request req;
3076 struct wiphy *wiphy;
3077 int err;
3078
Johannes Bergf4a11bb2009-03-27 12:40:28 +01003079 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3080 return -EINVAL;
3081
3082 if (!info->attrs[NL80211_ATTR_MAC])
3083 return -EINVAL;
3084
3085 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3086 return -EINVAL;
3087
Jouni Malinen636a5d32009-03-19 13:39:22 +02003088 rtnl_lock();
3089
3090 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3091 if (err)
3092 goto unlock_rtnl;
3093
3094 if (!drv->ops->deauth) {
3095 err = -EOPNOTSUPP;
3096 goto out;
3097 }
3098
Jouni Malineneec60b02009-03-20 21:21:19 +02003099 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3100 err = -EOPNOTSUPP;
3101 goto out;
3102 }
3103
Jouni Malinen35a8efe2009-03-20 21:21:18 +02003104 if (!netif_running(dev)) {
3105 err = -ENETDOWN;
3106 goto out;
3107 }
3108
Jouni Malinen636a5d32009-03-19 13:39:22 +02003109 wiphy = &drv->wiphy;
3110 memset(&req, 0, sizeof(req));
3111
3112 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3113
Johannes Bergf4a11bb2009-03-27 12:40:28 +01003114 req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3115 if (req.reason_code == 0) {
3116 /* Reason Code 0 is reserved */
3117 err = -EINVAL;
3118 goto out;
Jouni Malinen255e7372009-03-20 21:21:17 +02003119 }
Jouni Malinen636a5d32009-03-19 13:39:22 +02003120
3121 if (info->attrs[NL80211_ATTR_IE]) {
3122 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3123 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3124 }
3125
3126 err = drv->ops->deauth(&drv->wiphy, dev, &req);
3127
3128out:
3129 cfg80211_put_dev(drv);
3130 dev_put(dev);
3131unlock_rtnl:
3132 rtnl_unlock();
3133 return err;
3134}
3135
3136static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3137{
3138 struct cfg80211_registered_device *drv;
3139 struct net_device *dev;
3140 struct cfg80211_disassoc_request req;
3141 struct wiphy *wiphy;
3142 int err;
3143
Johannes Bergf4a11bb2009-03-27 12:40:28 +01003144 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3145 return -EINVAL;
3146
3147 if (!info->attrs[NL80211_ATTR_MAC])
3148 return -EINVAL;
3149
3150 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3151 return -EINVAL;
3152
Jouni Malinen636a5d32009-03-19 13:39:22 +02003153 rtnl_lock();
3154
3155 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3156 if (err)
3157 goto unlock_rtnl;
3158
3159 if (!drv->ops->disassoc) {
3160 err = -EOPNOTSUPP;
3161 goto out;
3162 }
3163
Jouni Malineneec60b02009-03-20 21:21:19 +02003164 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3165 err = -EOPNOTSUPP;
3166 goto out;
3167 }
3168
Jouni Malinen35a8efe2009-03-20 21:21:18 +02003169 if (!netif_running(dev)) {
3170 err = -ENETDOWN;
3171 goto out;
3172 }
3173
Jouni Malinen636a5d32009-03-19 13:39:22 +02003174 wiphy = &drv->wiphy;
3175 memset(&req, 0, sizeof(req));
3176
3177 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3178
Johannes Bergf4a11bb2009-03-27 12:40:28 +01003179 req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3180 if (req.reason_code == 0) {
3181 /* Reason Code 0 is reserved */
3182 err = -EINVAL;
3183 goto out;
Jouni Malinen255e7372009-03-20 21:21:17 +02003184 }
Jouni Malinen636a5d32009-03-19 13:39:22 +02003185
3186 if (info->attrs[NL80211_ATTR_IE]) {
3187 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3188 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3189 }
3190
3191 err = drv->ops->disassoc(&drv->wiphy, dev, &req);
3192
3193out:
3194 cfg80211_put_dev(drv);
3195 dev_put(dev);
3196unlock_rtnl:
3197 rtnl_unlock();
3198 return err;
3199}
3200
Johannes Berg04a773a2009-04-19 21:24:32 +02003201static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3202{
3203 struct cfg80211_registered_device *drv;
3204 struct net_device *dev;
3205 struct cfg80211_ibss_params ibss;
3206 struct wiphy *wiphy;
3207 int err;
3208
Johannes Berg8e30bc52009-04-22 17:45:38 +02003209 memset(&ibss, 0, sizeof(ibss));
3210
Johannes Berg04a773a2009-04-19 21:24:32 +02003211 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3212 return -EINVAL;
3213
3214 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3215 !info->attrs[NL80211_ATTR_SSID] ||
3216 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3217 return -EINVAL;
3218
Johannes Berg8e30bc52009-04-22 17:45:38 +02003219 ibss.beacon_interval = 100;
3220
3221 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3222 ibss.beacon_interval =
3223 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3224 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3225 return -EINVAL;
3226 }
3227
Johannes Berg04a773a2009-04-19 21:24:32 +02003228 rtnl_lock();
3229
3230 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3231 if (err)
3232 goto unlock_rtnl;
3233
3234 if (!drv->ops->join_ibss) {
3235 err = -EOPNOTSUPP;
3236 goto out;
3237 }
3238
3239 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3240 err = -EOPNOTSUPP;
3241 goto out;
3242 }
3243
3244 if (!netif_running(dev)) {
3245 err = -ENETDOWN;
3246 goto out;
3247 }
3248
3249 wiphy = &drv->wiphy;
Johannes Berg04a773a2009-04-19 21:24:32 +02003250
3251 if (info->attrs[NL80211_ATTR_MAC])
3252 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3253 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3254 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3255
3256 if (info->attrs[NL80211_ATTR_IE]) {
3257 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3258 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3259 }
3260
3261 ibss.channel = ieee80211_get_channel(wiphy,
3262 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3263 if (!ibss.channel ||
3264 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
3265 ibss.channel->flags & IEEE80211_CHAN_DISABLED) {
3266 err = -EINVAL;
3267 goto out;
3268 }
3269
3270 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
3271
3272 err = cfg80211_join_ibss(drv, dev, &ibss);
3273
3274out:
3275 cfg80211_put_dev(drv);
3276 dev_put(dev);
3277unlock_rtnl:
3278 rtnl_unlock();
3279 return err;
3280}
3281
3282static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3283{
3284 struct cfg80211_registered_device *drv;
3285 struct net_device *dev;
3286 int err;
3287
3288 rtnl_lock();
3289
3290 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3291 if (err)
3292 goto unlock_rtnl;
3293
3294 if (!drv->ops->leave_ibss) {
3295 err = -EOPNOTSUPP;
3296 goto out;
3297 }
3298
3299 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3300 err = -EOPNOTSUPP;
3301 goto out;
3302 }
3303
3304 if (!netif_running(dev)) {
3305 err = -ENETDOWN;
3306 goto out;
3307 }
3308
Johannes Berg9d308422009-04-20 18:43:46 +02003309 err = cfg80211_leave_ibss(drv, dev, false);
Johannes Berg04a773a2009-04-19 21:24:32 +02003310
3311out:
3312 cfg80211_put_dev(drv);
3313 dev_put(dev);
3314unlock_rtnl:
3315 rtnl_unlock();
3316 return err;
3317}
3318
Johannes Berg55682962007-09-20 13:09:35 -04003319static struct genl_ops nl80211_ops[] = {
3320 {
3321 .cmd = NL80211_CMD_GET_WIPHY,
3322 .doit = nl80211_get_wiphy,
3323 .dumpit = nl80211_dump_wiphy,
3324 .policy = nl80211_policy,
3325 /* can be retrieved by unprivileged users */
3326 },
3327 {
3328 .cmd = NL80211_CMD_SET_WIPHY,
3329 .doit = nl80211_set_wiphy,
3330 .policy = nl80211_policy,
3331 .flags = GENL_ADMIN_PERM,
3332 },
3333 {
3334 .cmd = NL80211_CMD_GET_INTERFACE,
3335 .doit = nl80211_get_interface,
3336 .dumpit = nl80211_dump_interface,
3337 .policy = nl80211_policy,
3338 /* can be retrieved by unprivileged users */
3339 },
3340 {
3341 .cmd = NL80211_CMD_SET_INTERFACE,
3342 .doit = nl80211_set_interface,
3343 .policy = nl80211_policy,
3344 .flags = GENL_ADMIN_PERM,
3345 },
3346 {
3347 .cmd = NL80211_CMD_NEW_INTERFACE,
3348 .doit = nl80211_new_interface,
3349 .policy = nl80211_policy,
3350 .flags = GENL_ADMIN_PERM,
3351 },
3352 {
3353 .cmd = NL80211_CMD_DEL_INTERFACE,
3354 .doit = nl80211_del_interface,
3355 .policy = nl80211_policy,
3356 .flags = GENL_ADMIN_PERM,
3357 },
Johannes Berg41ade002007-12-19 02:03:29 +01003358 {
3359 .cmd = NL80211_CMD_GET_KEY,
3360 .doit = nl80211_get_key,
3361 .policy = nl80211_policy,
3362 .flags = GENL_ADMIN_PERM,
3363 },
3364 {
3365 .cmd = NL80211_CMD_SET_KEY,
3366 .doit = nl80211_set_key,
3367 .policy = nl80211_policy,
3368 .flags = GENL_ADMIN_PERM,
3369 },
3370 {
3371 .cmd = NL80211_CMD_NEW_KEY,
3372 .doit = nl80211_new_key,
3373 .policy = nl80211_policy,
3374 .flags = GENL_ADMIN_PERM,
3375 },
3376 {
3377 .cmd = NL80211_CMD_DEL_KEY,
3378 .doit = nl80211_del_key,
3379 .policy = nl80211_policy,
3380 .flags = GENL_ADMIN_PERM,
3381 },
Johannes Berged1b6cc2007-12-19 02:03:32 +01003382 {
3383 .cmd = NL80211_CMD_SET_BEACON,
3384 .policy = nl80211_policy,
3385 .flags = GENL_ADMIN_PERM,
3386 .doit = nl80211_addset_beacon,
3387 },
3388 {
3389 .cmd = NL80211_CMD_NEW_BEACON,
3390 .policy = nl80211_policy,
3391 .flags = GENL_ADMIN_PERM,
3392 .doit = nl80211_addset_beacon,
3393 },
3394 {
3395 .cmd = NL80211_CMD_DEL_BEACON,
3396 .policy = nl80211_policy,
3397 .flags = GENL_ADMIN_PERM,
3398 .doit = nl80211_del_beacon,
3399 },
Johannes Berg5727ef12007-12-19 02:03:34 +01003400 {
3401 .cmd = NL80211_CMD_GET_STATION,
3402 .doit = nl80211_get_station,
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01003403 .dumpit = nl80211_dump_station,
Johannes Berg5727ef12007-12-19 02:03:34 +01003404 .policy = nl80211_policy,
Johannes Berg5727ef12007-12-19 02:03:34 +01003405 },
3406 {
3407 .cmd = NL80211_CMD_SET_STATION,
3408 .doit = nl80211_set_station,
3409 .policy = nl80211_policy,
3410 .flags = GENL_ADMIN_PERM,
3411 },
3412 {
3413 .cmd = NL80211_CMD_NEW_STATION,
3414 .doit = nl80211_new_station,
3415 .policy = nl80211_policy,
3416 .flags = GENL_ADMIN_PERM,
3417 },
3418 {
3419 .cmd = NL80211_CMD_DEL_STATION,
3420 .doit = nl80211_del_station,
3421 .policy = nl80211_policy,
3422 .flags = GENL_ADMIN_PERM,
3423 },
Luis Carlos Cobo2ec600d2008-02-23 15:17:06 +01003424 {
3425 .cmd = NL80211_CMD_GET_MPATH,
3426 .doit = nl80211_get_mpath,
3427 .dumpit = nl80211_dump_mpath,
3428 .policy = nl80211_policy,
3429 .flags = GENL_ADMIN_PERM,
3430 },
3431 {
3432 .cmd = NL80211_CMD_SET_MPATH,
3433 .doit = nl80211_set_mpath,
3434 .policy = nl80211_policy,
3435 .flags = GENL_ADMIN_PERM,
3436 },
3437 {
3438 .cmd = NL80211_CMD_NEW_MPATH,
3439 .doit = nl80211_new_mpath,
3440 .policy = nl80211_policy,
3441 .flags = GENL_ADMIN_PERM,
3442 },
3443 {
3444 .cmd = NL80211_CMD_DEL_MPATH,
3445 .doit = nl80211_del_mpath,
3446 .policy = nl80211_policy,
3447 .flags = GENL_ADMIN_PERM,
3448 },
Jouni Malinen9f1ba902008-08-07 20:07:01 +03003449 {
3450 .cmd = NL80211_CMD_SET_BSS,
3451 .doit = nl80211_set_bss,
3452 .policy = nl80211_policy,
3453 .flags = GENL_ADMIN_PERM,
3454 },
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07003455 {
Luis R. Rodriguezf1303472009-01-30 09:26:42 -08003456 .cmd = NL80211_CMD_GET_REG,
3457 .doit = nl80211_get_reg,
3458 .policy = nl80211_policy,
3459 /* can be retrieved by unprivileged users */
3460 },
3461 {
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07003462 .cmd = NL80211_CMD_SET_REG,
3463 .doit = nl80211_set_reg,
3464 .policy = nl80211_policy,
3465 .flags = GENL_ADMIN_PERM,
3466 },
3467 {
3468 .cmd = NL80211_CMD_REQ_SET_REG,
3469 .doit = nl80211_req_set_reg,
3470 .policy = nl80211_policy,
3471 .flags = GENL_ADMIN_PERM,
3472 },
colin@cozybit.com93da9cc2008-10-21 12:03:48 -07003473 {
3474 .cmd = NL80211_CMD_GET_MESH_PARAMS,
3475 .doit = nl80211_get_mesh_params,
3476 .policy = nl80211_policy,
3477 /* can be retrieved by unprivileged users */
3478 },
3479 {
3480 .cmd = NL80211_CMD_SET_MESH_PARAMS,
3481 .doit = nl80211_set_mesh_params,
3482 .policy = nl80211_policy,
3483 .flags = GENL_ADMIN_PERM,
3484 },
Jouni Malinen9aed3cc2009-01-13 16:03:29 +02003485 {
Johannes Berg2a519312009-02-10 21:25:55 +01003486 .cmd = NL80211_CMD_TRIGGER_SCAN,
3487 .doit = nl80211_trigger_scan,
3488 .policy = nl80211_policy,
3489 .flags = GENL_ADMIN_PERM,
3490 },
3491 {
3492 .cmd = NL80211_CMD_GET_SCAN,
3493 .policy = nl80211_policy,
3494 .dumpit = nl80211_dump_scan,
3495 },
Jouni Malinen636a5d32009-03-19 13:39:22 +02003496 {
3497 .cmd = NL80211_CMD_AUTHENTICATE,
3498 .doit = nl80211_authenticate,
3499 .policy = nl80211_policy,
3500 .flags = GENL_ADMIN_PERM,
3501 },
3502 {
3503 .cmd = NL80211_CMD_ASSOCIATE,
3504 .doit = nl80211_associate,
3505 .policy = nl80211_policy,
3506 .flags = GENL_ADMIN_PERM,
3507 },
3508 {
3509 .cmd = NL80211_CMD_DEAUTHENTICATE,
3510 .doit = nl80211_deauthenticate,
3511 .policy = nl80211_policy,
3512 .flags = GENL_ADMIN_PERM,
3513 },
3514 {
3515 .cmd = NL80211_CMD_DISASSOCIATE,
3516 .doit = nl80211_disassociate,
3517 .policy = nl80211_policy,
3518 .flags = GENL_ADMIN_PERM,
3519 },
Johannes Berg04a773a2009-04-19 21:24:32 +02003520 {
3521 .cmd = NL80211_CMD_JOIN_IBSS,
3522 .doit = nl80211_join_ibss,
3523 .policy = nl80211_policy,
3524 .flags = GENL_ADMIN_PERM,
3525 },
3526 {
3527 .cmd = NL80211_CMD_LEAVE_IBSS,
3528 .doit = nl80211_leave_ibss,
3529 .policy = nl80211_policy,
3530 .flags = GENL_ADMIN_PERM,
3531 },
Johannes Berg55682962007-09-20 13:09:35 -04003532};
Jouni Malinen6039f6d2009-03-19 13:39:21 +02003533static struct genl_multicast_group nl80211_mlme_mcgrp = {
3534 .name = "mlme",
3535};
Johannes Berg55682962007-09-20 13:09:35 -04003536
3537/* multicast groups */
3538static struct genl_multicast_group nl80211_config_mcgrp = {
3539 .name = "config",
3540};
Johannes Berg2a519312009-02-10 21:25:55 +01003541static struct genl_multicast_group nl80211_scan_mcgrp = {
3542 .name = "scan",
3543};
Luis R. Rodriguez73d54c92009-03-09 22:07:42 -04003544static struct genl_multicast_group nl80211_regulatory_mcgrp = {
3545 .name = "regulatory",
3546};
Johannes Berg55682962007-09-20 13:09:35 -04003547
3548/* notification functions */
3549
3550void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
3551{
3552 struct sk_buff *msg;
3553
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -07003554 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
Johannes Berg55682962007-09-20 13:09:35 -04003555 if (!msg)
3556 return;
3557
3558 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
3559 nlmsg_free(msg);
3560 return;
3561 }
3562
3563 genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
3564}
3565
Johannes Berg2a519312009-02-10 21:25:55 +01003566static int nl80211_send_scan_donemsg(struct sk_buff *msg,
3567 struct cfg80211_registered_device *rdev,
3568 struct net_device *netdev,
3569 u32 pid, u32 seq, int flags,
3570 u32 cmd)
3571{
3572 void *hdr;
3573
3574 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
3575 if (!hdr)
3576 return -1;
3577
Luis R. Rodriguezb5850a72009-02-21 00:04:19 -05003578 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
Johannes Berg2a519312009-02-10 21:25:55 +01003579 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3580
3581 /* XXX: we should probably bounce back the request? */
3582
3583 return genlmsg_end(msg, hdr);
3584
3585 nla_put_failure:
3586 genlmsg_cancel(msg, hdr);
3587 return -EMSGSIZE;
3588}
3589
3590void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
3591 struct net_device *netdev)
3592{
3593 struct sk_buff *msg;
3594
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -07003595 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
Johannes Berg2a519312009-02-10 21:25:55 +01003596 if (!msg)
3597 return;
3598
3599 if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0,
3600 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
3601 nlmsg_free(msg);
3602 return;
3603 }
3604
3605 genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
3606}
3607
3608void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
3609 struct net_device *netdev)
3610{
3611 struct sk_buff *msg;
3612
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -07003613 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
Johannes Berg2a519312009-02-10 21:25:55 +01003614 if (!msg)
3615 return;
3616
3617 if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0,
3618 NL80211_CMD_SCAN_ABORTED) < 0) {
3619 nlmsg_free(msg);
3620 return;
3621 }
3622
3623 genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
3624}
3625
Luis R. Rodriguez73d54c92009-03-09 22:07:42 -04003626/*
3627 * This can happen on global regulatory changes or device specific settings
3628 * based on custom world regulatory domains.
3629 */
3630void nl80211_send_reg_change_event(struct regulatory_request *request)
3631{
3632 struct sk_buff *msg;
3633 void *hdr;
3634
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -07003635 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
Luis R. Rodriguez73d54c92009-03-09 22:07:42 -04003636 if (!msg)
3637 return;
3638
3639 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
3640 if (!hdr) {
3641 nlmsg_free(msg);
3642 return;
3643 }
3644
3645 /* Userspace can always count this one always being set */
3646 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
3647
3648 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
3649 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3650 NL80211_REGDOM_TYPE_WORLD);
3651 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
3652 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3653 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
3654 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
3655 request->intersect)
3656 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3657 NL80211_REGDOM_TYPE_INTERSECTION);
3658 else {
3659 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3660 NL80211_REGDOM_TYPE_COUNTRY);
3661 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
3662 }
3663
3664 if (wiphy_idx_valid(request->wiphy_idx))
3665 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
3666
3667 if (genlmsg_end(msg, hdr) < 0) {
3668 nlmsg_free(msg);
3669 return;
3670 }
3671
3672 genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_KERNEL);
3673
3674 return;
3675
3676nla_put_failure:
3677 genlmsg_cancel(msg, hdr);
3678 nlmsg_free(msg);
3679}
3680
Jouni Malinen6039f6d2009-03-19 13:39:21 +02003681static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
3682 struct net_device *netdev,
3683 const u8 *buf, size_t len,
3684 enum nl80211_commands cmd)
3685{
3686 struct sk_buff *msg;
3687 void *hdr;
3688
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -07003689 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
Jouni Malinen6039f6d2009-03-19 13:39:21 +02003690 if (!msg)
3691 return;
3692
3693 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
3694 if (!hdr) {
3695 nlmsg_free(msg);
3696 return;
3697 }
3698
3699 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3700 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3701 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
3702
3703 if (genlmsg_end(msg, hdr) < 0) {
3704 nlmsg_free(msg);
3705 return;
3706 }
3707
Jouni Malinend91c01c2009-04-18 21:53:15 +03003708 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
Jouni Malinen6039f6d2009-03-19 13:39:21 +02003709 return;
3710
3711 nla_put_failure:
3712 genlmsg_cancel(msg, hdr);
3713 nlmsg_free(msg);
3714}
3715
3716void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
3717 struct net_device *netdev, const u8 *buf, size_t len)
3718{
3719 nl80211_send_mlme_event(rdev, netdev, buf, len,
3720 NL80211_CMD_AUTHENTICATE);
3721}
3722
3723void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
3724 struct net_device *netdev, const u8 *buf,
3725 size_t len)
3726{
3727 nl80211_send_mlme_event(rdev, netdev, buf, len, NL80211_CMD_ASSOCIATE);
3728}
3729
Jouni Malinen53b46b82009-03-27 20:53:56 +02003730void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
3731 struct net_device *netdev, const u8 *buf, size_t len)
Jouni Malinen6039f6d2009-03-19 13:39:21 +02003732{
3733 nl80211_send_mlme_event(rdev, netdev, buf, len,
3734 NL80211_CMD_DEAUTHENTICATE);
3735}
3736
Jouni Malinen53b46b82009-03-27 20:53:56 +02003737void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
3738 struct net_device *netdev, const u8 *buf,
3739 size_t len)
Jouni Malinen6039f6d2009-03-19 13:39:21 +02003740{
3741 nl80211_send_mlme_event(rdev, netdev, buf, len,
3742 NL80211_CMD_DISASSOCIATE);
3743}
3744
Luis R. Rodriguez1b06bb42009-05-02 00:34:48 -04003745static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
3746 struct net_device *netdev, int cmd,
3747 const u8 *addr)
Jouni Malinen1965c852009-04-22 21:38:25 +03003748{
3749 struct sk_buff *msg;
3750 void *hdr;
3751
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -07003752 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
Jouni Malinen1965c852009-04-22 21:38:25 +03003753 if (!msg)
3754 return;
3755
3756 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
3757 if (!hdr) {
3758 nlmsg_free(msg);
3759 return;
3760 }
3761
3762 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3763 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3764 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
3765 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3766
3767 if (genlmsg_end(msg, hdr) < 0) {
3768 nlmsg_free(msg);
3769 return;
3770 }
3771
3772 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
3773 return;
3774
3775 nla_put_failure:
3776 genlmsg_cancel(msg, hdr);
3777 nlmsg_free(msg);
3778}
3779
3780void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
3781 struct net_device *netdev, const u8 *addr)
3782{
3783 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
3784 addr);
3785}
3786
3787void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
3788 struct net_device *netdev, const u8 *addr)
3789{
3790 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, addr);
3791}
3792
Johannes Berg04a773a2009-04-19 21:24:32 +02003793void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
3794 struct net_device *netdev, const u8 *bssid,
3795 gfp_t gfp)
3796{
3797 struct sk_buff *msg;
3798 void *hdr;
3799
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -07003800 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
Johannes Berg04a773a2009-04-19 21:24:32 +02003801 if (!msg)
3802 return;
3803
3804 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
3805 if (!hdr) {
3806 nlmsg_free(msg);
3807 return;
3808 }
3809
3810 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3811 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3812 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
3813
3814 if (genlmsg_end(msg, hdr) < 0) {
3815 nlmsg_free(msg);
3816 return;
3817 }
3818
3819 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
3820 return;
3821
3822 nla_put_failure:
3823 genlmsg_cancel(msg, hdr);
3824 nlmsg_free(msg);
3825}
3826
Jouni Malinena3b8b052009-03-27 21:59:49 +02003827void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
3828 struct net_device *netdev, const u8 *addr,
3829 enum nl80211_key_type key_type, int key_id,
3830 const u8 *tsc)
3831{
3832 struct sk_buff *msg;
3833 void *hdr;
3834
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -07003835 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
Jouni Malinena3b8b052009-03-27 21:59:49 +02003836 if (!msg)
3837 return;
3838
3839 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
3840 if (!hdr) {
3841 nlmsg_free(msg);
3842 return;
3843 }
3844
3845 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3846 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3847 if (addr)
3848 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3849 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
3850 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
3851 if (tsc)
3852 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
3853
3854 if (genlmsg_end(msg, hdr) < 0) {
3855 nlmsg_free(msg);
3856 return;
3857 }
3858
3859 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_KERNEL);
3860 return;
3861
3862 nla_put_failure:
3863 genlmsg_cancel(msg, hdr);
3864 nlmsg_free(msg);
3865}
3866
Luis R. Rodriguez6bad8762009-04-02 14:08:09 -04003867void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
3868 struct ieee80211_channel *channel_before,
3869 struct ieee80211_channel *channel_after)
3870{
3871 struct sk_buff *msg;
3872 void *hdr;
3873 struct nlattr *nl_freq;
3874
Pablo Neira Ayusofd2120c2009-05-19 15:27:55 -07003875 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
Luis R. Rodriguez6bad8762009-04-02 14:08:09 -04003876 if (!msg)
3877 return;
3878
3879 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
3880 if (!hdr) {
3881 nlmsg_free(msg);
3882 return;
3883 }
3884
3885 /*
3886 * Since we are applying the beacon hint to a wiphy we know its
3887 * wiphy_idx is valid
3888 */
3889 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
3890
3891 /* Before */
3892 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
3893 if (!nl_freq)
3894 goto nla_put_failure;
3895 if (nl80211_msg_put_channel(msg, channel_before))
3896 goto nla_put_failure;
3897 nla_nest_end(msg, nl_freq);
3898
3899 /* After */
3900 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
3901 if (!nl_freq)
3902 goto nla_put_failure;
3903 if (nl80211_msg_put_channel(msg, channel_after))
3904 goto nla_put_failure;
3905 nla_nest_end(msg, nl_freq);
3906
3907 if (genlmsg_end(msg, hdr) < 0) {
3908 nlmsg_free(msg);
3909 return;
3910 }
3911
3912 genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_ATOMIC);
3913
3914 return;
3915
3916nla_put_failure:
3917 genlmsg_cancel(msg, hdr);
3918 nlmsg_free(msg);
3919}
3920
Johannes Berg55682962007-09-20 13:09:35 -04003921/* initialisation/exit functions */
3922
3923int nl80211_init(void)
3924{
Michał Mirosław0d63cbb2009-05-21 10:34:06 +00003925 int err;
Johannes Berg55682962007-09-20 13:09:35 -04003926
Michał Mirosław0d63cbb2009-05-21 10:34:06 +00003927 err = genl_register_family_with_ops(&nl80211_fam,
3928 nl80211_ops, ARRAY_SIZE(nl80211_ops));
Johannes Berg55682962007-09-20 13:09:35 -04003929 if (err)
3930 return err;
3931
Johannes Berg55682962007-09-20 13:09:35 -04003932 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
3933 if (err)
3934 goto err_out;
3935
Johannes Berg2a519312009-02-10 21:25:55 +01003936 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
3937 if (err)
3938 goto err_out;
3939
Luis R. Rodriguez73d54c92009-03-09 22:07:42 -04003940 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
3941 if (err)
3942 goto err_out;
3943
Jouni Malinen6039f6d2009-03-19 13:39:21 +02003944 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
3945 if (err)
3946 goto err_out;
3947
Johannes Berg55682962007-09-20 13:09:35 -04003948 return 0;
3949 err_out:
3950 genl_unregister_family(&nl80211_fam);
3951 return err;
3952}
3953
3954void nl80211_exit(void)
3955{
3956 genl_unregister_family(&nl80211_fam);
3957}