2 * This is the new netlink-based wireless configuration interface.
4 * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net>
8 #include <linux/module.h>
10 #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>
16 #include <linux/etherdevice.h>
17 #include <net/genetlink.h>
18 #include <net/cfg80211.h>
23 /* the netlink family */
24 static struct genl_family nl80211_fam = {
25 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
26 .name = "nl80211", /* have users key off the name instead */
27 .hdrsize = 0, /* no private header */
28 .version = 1, /* no particular meaning now */
29 .maxattr = NL80211_ATTR_MAX,
32 /* internal helper: get drv and dev */
33 static int get_drv_dev_by_info_ifindex(struct nlattr **attrs,
34 struct cfg80211_registered_device **drv,
35 struct net_device **dev)
39 if (!attrs[NL80211_ATTR_IFINDEX])
42 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
43 *dev = dev_get_by_index(&init_net, ifindex);
47 *drv = cfg80211_get_dev_from_ifindex(ifindex);
56 /* policy for the attributes */
57 static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
58 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
59 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
61 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
62 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
63 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
64 [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 },
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 },
73 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
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 },
80 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
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 },
88 [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 },
93 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
94 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
95 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
96 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
97 .len = IEEE80211_MAX_MESH_ID_LEN },
98 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
100 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
101 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
103 [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 },
106 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
107 .len = NL80211_MAX_SUPP_RATES },
109 [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
111 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
112 .len = NL80211_HT_CAPABILITY_LEN },
114 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
115 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
116 .len = IEEE80211_MAX_DATA_LEN },
117 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
118 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
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 },
124 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
125 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
126 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
127 [NL80211_ATTR_STA_FLAGS2] = {
128 .len = sizeof(struct nl80211_sta_flag_update),
130 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
134 static bool is_valid_ie_attr(const struct nlattr *attr)
142 pos = nla_data(attr);
163 /* message building helper */
164 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
167 /* since there is no private header just add the generic one */
168 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
171 static int nl80211_msg_put_channel(struct sk_buff *msg,
172 struct ieee80211_channel *chan)
174 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
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);
186 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
187 DBM_TO_MBM(chan->max_power));
195 /* netlink command implementations */
197 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
198 struct cfg80211_registered_device *dev)
201 struct nlattr *nl_bands, *nl_band;
202 struct nlattr *nl_freqs, *nl_freq;
203 struct nlattr *nl_rates, *nl_rate;
204 struct nlattr *nl_modes;
205 struct nlattr *nl_cmds;
206 enum ieee80211_band band;
207 struct ieee80211_channel *chan;
208 struct ieee80211_rate *rate;
210 u16 ifmodes = dev->wiphy.interface_modes;
212 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
216 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
217 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
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);
228 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
229 dev->wiphy.max_scan_ssids);
230 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
231 dev->wiphy.max_scan_ie_len);
233 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
234 sizeof(u32) * dev->wiphy.n_cipher_suites,
235 dev->wiphy.cipher_suites);
237 nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
239 goto nla_put_failure;
244 NLA_PUT_FLAG(msg, i);
249 nla_nest_end(msg, nl_modes);
251 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
253 goto nla_put_failure;
255 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
256 if (!dev->wiphy.bands[band])
259 nl_band = nla_nest_start(msg, band);
261 goto nla_put_failure;
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);
276 /* add frequencies */
277 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
279 goto nla_put_failure;
281 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
282 nl_freq = nla_nest_start(msg, i);
284 goto nla_put_failure;
286 chan = &dev->wiphy.bands[band]->channels[i];
288 if (nl80211_msg_put_channel(msg, chan))
289 goto nla_put_failure;
291 nla_nest_end(msg, nl_freq);
294 nla_nest_end(msg, nl_freqs);
297 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
299 goto nla_put_failure;
301 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
302 nl_rate = nla_nest_start(msg, i);
304 goto nla_put_failure;
306 rate = &dev->wiphy.bands[band]->bitrates[i];
307 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
309 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
311 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
313 nla_nest_end(msg, nl_rate);
316 nla_nest_end(msg, nl_rates);
318 nla_nest_end(msg, nl_band);
320 nla_nest_end(msg, nl_bands);
322 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
324 goto nla_put_failure;
329 if (dev->ops->op) { \
331 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
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);
343 CMD(auth, AUTHENTICATE);
344 CMD(assoc, ASSOCIATE);
345 CMD(deauth, DEAUTHENTICATE);
346 CMD(disassoc, DISASSOCIATE);
347 CMD(join_ibss, JOIN_IBSS);
350 nla_nest_end(msg, nl_cmds);
352 return genlmsg_end(msg, hdr);
355 genlmsg_cancel(msg, hdr);
359 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
362 int start = cb->args[0];
363 struct cfg80211_registered_device *dev;
365 mutex_lock(&cfg80211_mutex);
366 list_for_each_entry(dev, &cfg80211_drv_list, list) {
369 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
370 cb->nlh->nlmsg_seq, NLM_F_MULTI,
376 mutex_unlock(&cfg80211_mutex);
383 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
386 struct cfg80211_registered_device *dev;
388 dev = cfg80211_get_dev_from_info(info);
392 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
396 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
399 cfg80211_put_dev(dev);
401 return genlmsg_unicast(msg, info->snd_pid);
406 cfg80211_put_dev(dev);
410 static 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 },
418 static int parse_txq_params(struct nlattr *tb[],
419 struct ieee80211_txq_params *txq_params)
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])
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]);
435 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
437 struct cfg80211_registered_device *rdev;
438 int result = 0, rem_txq_params = 0;
439 struct nlattr *nl_txq_params;
441 u8 retry_short = 0, retry_long = 0;
442 u32 frag_threshold = 0, rts_threshold = 0;
446 mutex_lock(&cfg80211_mutex);
448 rdev = __cfg80211_drv_from_info(info);
450 mutex_unlock(&cfg80211_mutex);
451 result = PTR_ERR(rdev);
455 mutex_lock(&rdev->mtx);
457 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
458 result = cfg80211_dev_rename(
459 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
461 mutex_unlock(&cfg80211_mutex);
466 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
467 struct ieee80211_txq_params txq_params;
468 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
470 if (!rdev->ops->set_txq_params) {
471 result = -EOPNOTSUPP;
475 nla_for_each_nested(nl_txq_params,
476 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
478 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
479 nla_data(nl_txq_params),
480 nla_len(nl_txq_params),
482 result = parse_txq_params(tb, &txq_params);
486 result = rdev->ops->set_txq_params(&rdev->wiphy,
493 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
494 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
495 struct ieee80211_channel *chan;
496 struct ieee80211_sta_ht_cap *ht_cap;
499 if (!rdev->ops->set_channel) {
500 result = -EOPNOTSUPP;
506 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
507 channel_type = nla_get_u32(info->attrs[
508 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
509 if (channel_type != NL80211_CHAN_NO_HT &&
510 channel_type != NL80211_CHAN_HT20 &&
511 channel_type != NL80211_CHAN_HT40PLUS &&
512 channel_type != NL80211_CHAN_HT40MINUS)
516 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
517 chan = ieee80211_get_channel(&rdev->wiphy, freq);
519 /* Primary channel not allowed */
520 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
523 if (channel_type == NL80211_CHAN_HT40MINUS &&
524 (chan->flags & IEEE80211_CHAN_NO_HT40MINUS))
526 else if (channel_type == NL80211_CHAN_HT40PLUS &&
527 (chan->flags & IEEE80211_CHAN_NO_HT40PLUS))
531 * At this point we know if that if HT40 was requested
532 * we are allowed to use it and the extension channel
536 ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap;
538 /* no HT capabilities or intolerant */
539 if (channel_type != NL80211_CHAN_NO_HT) {
540 if (!ht_cap->ht_supported)
542 if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) ||
543 (ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT))
547 result = rdev->ops->set_channel(&rdev->wiphy, chan,
555 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
556 retry_short = nla_get_u8(
557 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
558 if (retry_short == 0) {
562 changed |= WIPHY_PARAM_RETRY_SHORT;
565 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
566 retry_long = nla_get_u8(
567 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
568 if (retry_long == 0) {
572 changed |= WIPHY_PARAM_RETRY_LONG;
575 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
576 frag_threshold = nla_get_u32(
577 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
578 if (frag_threshold < 256) {
582 if (frag_threshold != (u32) -1) {
584 * Fragments (apart from the last one) are required to
585 * have even length. Make the fragmentation code
586 * simpler by stripping LSB should someone try to use
587 * odd threshold value.
589 frag_threshold &= ~0x1;
591 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
594 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
595 rts_threshold = nla_get_u32(
596 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
597 changed |= WIPHY_PARAM_RTS_THRESHOLD;
601 u8 old_retry_short, old_retry_long;
602 u32 old_frag_threshold, old_rts_threshold;
604 if (!rdev->ops->set_wiphy_params) {
605 result = -EOPNOTSUPP;
609 old_retry_short = rdev->wiphy.retry_short;
610 old_retry_long = rdev->wiphy.retry_long;
611 old_frag_threshold = rdev->wiphy.frag_threshold;
612 old_rts_threshold = rdev->wiphy.rts_threshold;
614 if (changed & WIPHY_PARAM_RETRY_SHORT)
615 rdev->wiphy.retry_short = retry_short;
616 if (changed & WIPHY_PARAM_RETRY_LONG)
617 rdev->wiphy.retry_long = retry_long;
618 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
619 rdev->wiphy.frag_threshold = frag_threshold;
620 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
621 rdev->wiphy.rts_threshold = rts_threshold;
623 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
625 rdev->wiphy.retry_short = old_retry_short;
626 rdev->wiphy.retry_long = old_retry_long;
627 rdev->wiphy.frag_threshold = old_frag_threshold;
628 rdev->wiphy.rts_threshold = old_rts_threshold;
633 mutex_unlock(&rdev->mtx);
640 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
641 struct cfg80211_registered_device *rdev,
642 struct net_device *dev)
646 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
650 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
651 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
652 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
653 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
654 return genlmsg_end(msg, hdr);
657 genlmsg_cancel(msg, hdr);
661 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
665 int wp_start = cb->args[0];
666 int if_start = cb->args[1];
667 struct cfg80211_registered_device *dev;
668 struct wireless_dev *wdev;
670 mutex_lock(&cfg80211_mutex);
671 list_for_each_entry(dev, &cfg80211_drv_list, list) {
672 if (wp_idx < wp_start) {
678 mutex_lock(&dev->devlist_mtx);
679 list_for_each_entry(wdev, &dev->netdev_list, list) {
680 if (if_idx < if_start) {
684 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
685 cb->nlh->nlmsg_seq, NLM_F_MULTI,
686 dev, wdev->netdev) < 0) {
687 mutex_unlock(&dev->devlist_mtx);
692 mutex_unlock(&dev->devlist_mtx);
697 mutex_unlock(&cfg80211_mutex);
699 cb->args[0] = wp_idx;
700 cb->args[1] = if_idx;
705 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
708 struct cfg80211_registered_device *dev;
709 struct net_device *netdev;
712 err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev);
716 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
720 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
725 cfg80211_put_dev(dev);
727 return genlmsg_unicast(msg, info->snd_pid);
733 cfg80211_put_dev(dev);
737 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
738 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
739 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
740 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
741 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
742 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
745 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
747 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
755 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
756 nla, mntr_flags_policy))
759 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
761 *mntrflags |= (1<<flag);
766 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
768 struct cfg80211_registered_device *drv;
769 struct vif_params params;
771 enum nl80211_iftype otype, ntype;
772 struct net_device *dev;
773 u32 _flags, *flags = NULL;
776 memset(¶ms, 0, sizeof(params));
780 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
784 otype = ntype = dev->ieee80211_ptr->iftype;
786 if (info->attrs[NL80211_ATTR_IFTYPE]) {
787 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
790 if (ntype > NL80211_IFTYPE_MAX) {
796 if (!drv->ops->change_virtual_intf ||
797 !(drv->wiphy.interface_modes & (1 << ntype))) {
802 if (info->attrs[NL80211_ATTR_MESH_ID]) {
803 if (ntype != NL80211_IFTYPE_MESH_POINT) {
807 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
808 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
812 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
813 if (ntype != NL80211_IFTYPE_MONITOR) {
817 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
827 err = drv->ops->change_virtual_intf(&drv->wiphy, dev,
828 ntype, flags, ¶ms);
832 WARN_ON(!err && dev->ieee80211_ptr->iftype != ntype);
834 if (!err && (ntype != otype)) {
835 if (otype == NL80211_IFTYPE_ADHOC)
836 cfg80211_clear_ibss(dev, false);
841 cfg80211_put_dev(drv);
847 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
849 struct cfg80211_registered_device *drv;
850 struct vif_params params;
852 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
855 memset(¶ms, 0, sizeof(params));
857 if (!info->attrs[NL80211_ATTR_IFNAME])
860 if (info->attrs[NL80211_ATTR_IFTYPE]) {
861 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
862 if (type > NL80211_IFTYPE_MAX)
868 drv = cfg80211_get_dev_from_info(info);
874 if (!drv->ops->add_virtual_intf ||
875 !(drv->wiphy.interface_modes & (1 << type))) {
880 if (type == NL80211_IFTYPE_MESH_POINT &&
881 info->attrs[NL80211_ATTR_MESH_ID]) {
882 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
883 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
886 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
887 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
889 err = drv->ops->add_virtual_intf(&drv->wiphy,
890 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
891 type, err ? NULL : &flags, ¶ms);
894 cfg80211_put_dev(drv);
900 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
902 struct cfg80211_registered_device *drv;
904 struct net_device *dev;
908 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
911 ifindex = dev->ifindex;
914 if (!drv->ops->del_virtual_intf) {
919 err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex);
922 cfg80211_put_dev(drv);
928 struct get_key_cookie {
933 static void get_key_callback(void *c, struct key_params *params)
935 struct get_key_cookie *cookie = c;
938 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
939 params->key_len, params->key);
942 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
943 params->seq_len, params->seq);
946 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
954 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
956 struct cfg80211_registered_device *drv;
958 struct net_device *dev;
961 struct get_key_cookie cookie = {
967 if (info->attrs[NL80211_ATTR_KEY_IDX])
968 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
973 if (info->attrs[NL80211_ATTR_MAC])
974 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
978 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
982 if (!drv->ops->get_key) {
987 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
993 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
994 NL80211_CMD_NEW_KEY);
1003 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1004 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1006 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1008 err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr,
1009 &cookie, get_key_callback);
1015 goto nla_put_failure;
1017 genlmsg_end(msg, hdr);
1018 err = genlmsg_unicast(msg, info->snd_pid);
1025 cfg80211_put_dev(drv);
1033 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1035 struct cfg80211_registered_device *drv;
1037 struct net_device *dev;
1039 int (*func)(struct wiphy *wiphy, struct net_device *netdev,
1042 if (!info->attrs[NL80211_ATTR_KEY_IDX])
1045 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1047 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) {
1048 if (key_idx < 4 || key_idx > 5)
1050 } else if (key_idx > 3)
1053 /* currently only support setting default key */
1054 if (!info->attrs[NL80211_ATTR_KEY_DEFAULT] &&
1055 !info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT])
1060 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1064 if (info->attrs[NL80211_ATTR_KEY_DEFAULT])
1065 func = drv->ops->set_default_key;
1067 func = drv->ops->set_default_mgmt_key;
1074 err = func(&drv->wiphy, dev, key_idx);
1075 #ifdef CONFIG_WIRELESS_EXT
1077 if (func == drv->ops->set_default_key)
1078 dev->ieee80211_ptr->wext.default_key = key_idx;
1080 dev->ieee80211_ptr->wext.default_mgmt_key = key_idx;
1085 cfg80211_put_dev(drv);
1094 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1096 struct cfg80211_registered_device *drv;
1098 struct net_device *dev;
1099 struct key_params params;
1101 u8 *mac_addr = NULL;
1103 memset(¶ms, 0, sizeof(params));
1105 if (!info->attrs[NL80211_ATTR_KEY_CIPHER])
1108 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1109 params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1110 params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1113 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1114 params.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1115 params.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1118 if (info->attrs[NL80211_ATTR_KEY_IDX])
1119 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1121 params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1123 if (info->attrs[NL80211_ATTR_MAC])
1124 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1126 if (cfg80211_validate_key_settings(¶ms, key_idx, mac_addr))
1131 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1135 for (i = 0; i < drv->wiphy.n_cipher_suites; i++)
1136 if (params.cipher == drv->wiphy.cipher_suites[i])
1138 if (i == drv->wiphy.n_cipher_suites) {
1143 if (!drv->ops->add_key) {
1148 err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, ¶ms);
1151 cfg80211_put_dev(drv);
1159 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1161 struct cfg80211_registered_device *drv;
1163 struct net_device *dev;
1165 u8 *mac_addr = NULL;
1167 if (info->attrs[NL80211_ATTR_KEY_IDX])
1168 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1173 if (info->attrs[NL80211_ATTR_MAC])
1174 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1178 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1182 if (!drv->ops->del_key) {
1187 err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr);
1189 #ifdef CONFIG_WIRELESS_EXT
1191 if (key_idx == dev->ieee80211_ptr->wext.default_key)
1192 dev->ieee80211_ptr->wext.default_key = -1;
1193 else if (key_idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1194 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1199 cfg80211_put_dev(drv);
1208 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1210 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1211 struct beacon_parameters *info);
1212 struct cfg80211_registered_device *drv;
1214 struct net_device *dev;
1215 struct beacon_parameters params;
1218 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1223 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1227 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1232 switch (info->genlhdr->cmd) {
1233 case NL80211_CMD_NEW_BEACON:
1234 /* these are required for NEW_BEACON */
1235 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1236 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1237 !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1242 call = drv->ops->add_beacon;
1244 case NL80211_CMD_SET_BEACON:
1245 call = drv->ops->set_beacon;
1258 memset(¶ms, 0, sizeof(params));
1260 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
1262 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1266 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
1267 params.dtim_period =
1268 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1272 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1273 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1275 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1279 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1280 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1282 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1291 err = call(&drv->wiphy, dev, ¶ms);
1294 cfg80211_put_dev(drv);
1302 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1304 struct cfg80211_registered_device *drv;
1306 struct net_device *dev;
1310 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1314 if (!drv->ops->del_beacon) {
1319 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1323 err = drv->ops->del_beacon(&drv->wiphy, dev);
1326 cfg80211_put_dev(drv);
1334 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
1335 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
1336 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
1337 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
1338 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
1341 static int parse_station_flags(struct genl_info *info,
1342 struct station_parameters *params)
1344 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
1349 * Try parsing the new attribute first so userspace
1350 * can specify both for older kernels.
1352 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
1354 struct nl80211_sta_flag_update *sta_flags;
1356 sta_flags = nla_data(nla);
1357 params->sta_flags_mask = sta_flags->mask;
1358 params->sta_flags_set = sta_flags->set;
1359 if ((params->sta_flags_mask |
1360 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
1365 /* if present, parse the old attribute */
1367 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
1371 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1372 nla, sta_flags_policy))
1375 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
1376 params->sta_flags_mask &= ~1;
1378 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1380 params->sta_flags_set |= (1<<flag);
1385 static u16 nl80211_calculate_bitrate(struct rate_info *rate)
1387 int modulation, streams, bitrate;
1389 if (!(rate->flags & RATE_INFO_FLAGS_MCS))
1390 return rate->legacy;
1392 /* the formula below does only work for MCS values smaller than 32 */
1393 if (rate->mcs >= 32)
1396 modulation = rate->mcs & 7;
1397 streams = (rate->mcs >> 3) + 1;
1399 bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ?
1403 bitrate *= (modulation + 1);
1404 else if (modulation == 4)
1405 bitrate *= (modulation + 2);
1407 bitrate *= (modulation + 3);
1411 if (rate->flags & RATE_INFO_FLAGS_SHORT_GI)
1412 bitrate = (bitrate / 9) * 10;
1414 /* do NOT round down here */
1415 return (bitrate + 50000) / 100000;
1418 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1419 int flags, struct net_device *dev,
1420 u8 *mac_addr, struct station_info *sinfo)
1423 struct nlattr *sinfoattr, *txrate;
1426 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1430 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1431 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1433 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1435 goto nla_put_failure;
1436 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
1437 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
1438 sinfo->inactive_time);
1439 if (sinfo->filled & STATION_INFO_RX_BYTES)
1440 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
1442 if (sinfo->filled & STATION_INFO_TX_BYTES)
1443 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1445 if (sinfo->filled & STATION_INFO_LLID)
1446 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
1448 if (sinfo->filled & STATION_INFO_PLID)
1449 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
1451 if (sinfo->filled & STATION_INFO_PLINK_STATE)
1452 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
1453 sinfo->plink_state);
1454 if (sinfo->filled & STATION_INFO_SIGNAL)
1455 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
1457 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
1458 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
1460 goto nla_put_failure;
1462 /* nl80211_calculate_bitrate will return 0 for mcs >= 32 */
1463 bitrate = nl80211_calculate_bitrate(&sinfo->txrate);
1465 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
1467 if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
1468 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
1470 if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
1471 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
1472 if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
1473 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
1475 nla_nest_end(msg, txrate);
1477 if (sinfo->filled & STATION_INFO_RX_PACKETS)
1478 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
1480 if (sinfo->filled & STATION_INFO_TX_PACKETS)
1481 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
1483 nla_nest_end(msg, sinfoattr);
1485 return genlmsg_end(msg, hdr);
1488 genlmsg_cancel(msg, hdr);
1492 static int nl80211_dump_station(struct sk_buff *skb,
1493 struct netlink_callback *cb)
1495 struct station_info sinfo;
1496 struct cfg80211_registered_device *dev;
1497 struct net_device *netdev;
1498 u8 mac_addr[ETH_ALEN];
1499 int ifidx = cb->args[0];
1500 int sta_idx = cb->args[1];
1504 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1505 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1510 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1513 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1520 netdev = __dev_get_by_index(&init_net, ifidx);
1526 dev = cfg80211_get_dev_from_ifindex(ifidx);
1532 if (!dev->ops->dump_station) {
1538 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
1545 if (nl80211_send_station(skb,
1546 NETLINK_CB(cb->skb).pid,
1547 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1557 cb->args[1] = sta_idx;
1560 cfg80211_put_dev(dev);
1567 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
1569 struct cfg80211_registered_device *drv;
1571 struct net_device *dev;
1572 struct station_info sinfo;
1573 struct sk_buff *msg;
1574 u8 *mac_addr = NULL;
1576 memset(&sinfo, 0, sizeof(sinfo));
1578 if (!info->attrs[NL80211_ATTR_MAC])
1581 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1585 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1589 if (!drv->ops->get_station) {
1594 err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo);
1598 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1602 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
1603 dev, mac_addr, &sinfo) < 0)
1606 err = genlmsg_unicast(msg, info->snd_pid);
1612 cfg80211_put_dev(drv);
1621 * Get vlan interface making sure it is on the right wiphy.
1623 static int get_vlan(struct nlattr *vlanattr,
1624 struct cfg80211_registered_device *rdev,
1625 struct net_device **vlan)
1630 *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr));
1633 if (!(*vlan)->ieee80211_ptr)
1635 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
1641 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
1643 struct cfg80211_registered_device *drv;
1645 struct net_device *dev;
1646 struct station_parameters params;
1647 u8 *mac_addr = NULL;
1649 memset(¶ms, 0, sizeof(params));
1651 params.listen_interval = -1;
1653 if (info->attrs[NL80211_ATTR_STA_AID])
1656 if (!info->attrs[NL80211_ATTR_MAC])
1659 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1661 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
1662 params.supported_rates =
1663 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1664 params.supported_rates_len =
1665 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1668 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1669 params.listen_interval =
1670 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1672 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1674 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1676 if (parse_station_flags(info, ¶ms))
1679 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
1680 params.plink_action =
1681 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
1685 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1689 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan);
1693 /* validate settings */
1696 switch (dev->ieee80211_ptr->iftype) {
1697 case NL80211_IFTYPE_AP:
1698 case NL80211_IFTYPE_AP_VLAN:
1699 /* disallow mesh-specific things */
1700 if (params.plink_action)
1703 case NL80211_IFTYPE_STATION:
1704 /* disallow everything but AUTHORIZED flag */
1705 if (params.plink_action)
1709 if (params.supported_rates)
1713 if (params.listen_interval >= 0)
1715 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
1718 case NL80211_IFTYPE_MESH_POINT:
1719 /* disallow things mesh doesn't support */
1724 if (params.listen_interval >= 0)
1726 if (params.supported_rates)
1728 if (params.sta_flags_mask)
1738 if (!drv->ops->change_station) {
1743 err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, ¶ms);
1747 dev_put(params.vlan);
1748 cfg80211_put_dev(drv);
1756 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
1758 struct cfg80211_registered_device *drv;
1760 struct net_device *dev;
1761 struct station_parameters params;
1762 u8 *mac_addr = NULL;
1764 memset(¶ms, 0, sizeof(params));
1766 if (!info->attrs[NL80211_ATTR_MAC])
1769 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1772 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
1775 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1776 params.supported_rates =
1777 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1778 params.supported_rates_len =
1779 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1780 params.listen_interval =
1781 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1783 if (info->attrs[NL80211_ATTR_STA_AID]) {
1784 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
1785 if (!params.aid || params.aid > IEEE80211_MAX_AID)
1789 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1791 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1793 if (parse_station_flags(info, ¶ms))
1798 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1802 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan);
1806 /* validate settings */
1809 switch (dev->ieee80211_ptr->iftype) {
1810 case NL80211_IFTYPE_AP:
1811 case NL80211_IFTYPE_AP_VLAN:
1812 /* all ok but must have AID */
1816 case NL80211_IFTYPE_MESH_POINT:
1817 /* disallow things mesh doesn't support */
1824 if (params.listen_interval >= 0)
1826 if (params.supported_rates)
1828 if (params.sta_flags_mask)
1838 if (!drv->ops->add_station) {
1843 if (!netif_running(dev)) {
1848 err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, ¶ms);
1852 dev_put(params.vlan);
1853 cfg80211_put_dev(drv);
1861 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
1863 struct cfg80211_registered_device *drv;
1865 struct net_device *dev;
1866 u8 *mac_addr = NULL;
1868 if (info->attrs[NL80211_ATTR_MAC])
1869 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1873 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1877 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1878 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
1879 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
1884 if (!drv->ops->del_station) {
1889 err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
1892 cfg80211_put_dev(drv);
1900 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
1901 int flags, struct net_device *dev,
1902 u8 *dst, u8 *next_hop,
1903 struct mpath_info *pinfo)
1906 struct nlattr *pinfoattr;
1908 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1912 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1913 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
1914 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
1916 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
1918 goto nla_put_failure;
1919 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
1920 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
1922 if (pinfo->filled & MPATH_INFO_DSN)
1923 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
1925 if (pinfo->filled & MPATH_INFO_METRIC)
1926 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
1928 if (pinfo->filled & MPATH_INFO_EXPTIME)
1929 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
1931 if (pinfo->filled & MPATH_INFO_FLAGS)
1932 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
1934 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
1935 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
1936 pinfo->discovery_timeout);
1937 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
1938 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
1939 pinfo->discovery_retries);
1941 nla_nest_end(msg, pinfoattr);
1943 return genlmsg_end(msg, hdr);
1946 genlmsg_cancel(msg, hdr);
1950 static int nl80211_dump_mpath(struct sk_buff *skb,
1951 struct netlink_callback *cb)
1953 struct mpath_info pinfo;
1954 struct cfg80211_registered_device *dev;
1955 struct net_device *netdev;
1957 u8 next_hop[ETH_ALEN];
1958 int ifidx = cb->args[0];
1959 int path_idx = cb->args[1];
1963 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1964 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1969 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1972 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1979 netdev = __dev_get_by_index(&init_net, ifidx);
1985 dev = cfg80211_get_dev_from_ifindex(ifidx);
1991 if (!dev->ops->dump_mpath) {
1996 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2002 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2003 dst, next_hop, &pinfo);
2009 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2010 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2011 netdev, dst, next_hop,
2020 cb->args[1] = path_idx;
2023 cfg80211_put_dev(dev);
2030 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2032 struct cfg80211_registered_device *drv;
2034 struct net_device *dev;
2035 struct mpath_info pinfo;
2036 struct sk_buff *msg;
2038 u8 next_hop[ETH_ALEN];
2040 memset(&pinfo, 0, sizeof(pinfo));
2042 if (!info->attrs[NL80211_ATTR_MAC])
2045 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2049 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2053 if (!drv->ops->get_mpath) {
2058 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2063 err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
2067 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2071 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2072 dev, dst, next_hop, &pinfo) < 0)
2075 err = genlmsg_unicast(msg, info->snd_pid);
2081 cfg80211_put_dev(drv);
2089 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2091 struct cfg80211_registered_device *drv;
2093 struct net_device *dev;
2095 u8 *next_hop = NULL;
2097 if (!info->attrs[NL80211_ATTR_MAC])
2100 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2103 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2104 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2108 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2112 if (!drv->ops->change_mpath) {
2117 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2122 if (!netif_running(dev)) {
2127 err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
2130 cfg80211_put_dev(drv);
2137 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2139 struct cfg80211_registered_device *drv;
2141 struct net_device *dev;
2143 u8 *next_hop = NULL;
2145 if (!info->attrs[NL80211_ATTR_MAC])
2148 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2151 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2152 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2156 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2160 if (!drv->ops->add_mpath) {
2165 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2170 if (!netif_running(dev)) {
2175 err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
2178 cfg80211_put_dev(drv);
2186 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2188 struct cfg80211_registered_device *drv;
2190 struct net_device *dev;
2193 if (info->attrs[NL80211_ATTR_MAC])
2194 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2198 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2202 if (!drv->ops->del_mpath) {
2207 err = drv->ops->del_mpath(&drv->wiphy, dev, dst);
2210 cfg80211_put_dev(drv);
2218 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2220 struct cfg80211_registered_device *drv;
2222 struct net_device *dev;
2223 struct bss_parameters params;
2225 memset(¶ms, 0, sizeof(params));
2226 /* default to not changing parameters */
2227 params.use_cts_prot = -1;
2228 params.use_short_preamble = -1;
2229 params.use_short_slot_time = -1;
2231 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2232 params.use_cts_prot =
2233 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2234 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2235 params.use_short_preamble =
2236 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2237 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2238 params.use_short_slot_time =
2239 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2240 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2241 params.basic_rates =
2242 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2243 params.basic_rates_len =
2244 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2249 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2253 if (!drv->ops->change_bss) {
2258 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
2263 err = drv->ops->change_bss(&drv->wiphy, dev, ¶ms);
2266 cfg80211_put_dev(drv);
2274 static const struct nla_policy
2275 reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2276 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2277 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2278 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2279 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2280 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2281 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2284 static int parse_reg_rule(struct nlattr *tb[],
2285 struct ieee80211_reg_rule *reg_rule)
2287 struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
2288 struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
2290 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2292 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2294 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2296 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2298 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2301 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2303 freq_range->start_freq_khz =
2304 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2305 freq_range->end_freq_khz =
2306 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2307 freq_range->max_bandwidth_khz =
2308 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2310 power_rule->max_eirp =
2311 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2313 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2314 power_rule->max_antenna_gain =
2315 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2320 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2326 * You should only get this when cfg80211 hasn't yet initialized
2327 * completely when built-in to the kernel right between the time
2328 * window between nl80211_init() and regulatory_init(), if that is
2331 mutex_lock(&cfg80211_mutex);
2332 if (unlikely(!cfg80211_regdomain)) {
2333 mutex_unlock(&cfg80211_mutex);
2334 return -EINPROGRESS;
2336 mutex_unlock(&cfg80211_mutex);
2338 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2341 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2343 #ifdef CONFIG_WIRELESS_OLD_REGULATORY
2344 /* We ignore world regdom requests with the old regdom setup */
2345 if (is_world_regdom(data))
2349 r = regulatory_hint_user(data);
2354 static int nl80211_get_mesh_params(struct sk_buff *skb,
2355 struct genl_info *info)
2357 struct cfg80211_registered_device *drv;
2358 struct mesh_config cur_params;
2360 struct net_device *dev;
2362 struct nlattr *pinfoattr;
2363 struct sk_buff *msg;
2367 /* Look up our device */
2368 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2372 if (!drv->ops->get_mesh_params) {
2377 /* Get the mesh params */
2378 err = drv->ops->get_mesh_params(&drv->wiphy, dev, &cur_params);
2382 /* Draw up a netlink message to send back */
2383 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2388 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2389 NL80211_CMD_GET_MESH_PARAMS);
2391 goto nla_put_failure;
2392 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
2394 goto nla_put_failure;
2395 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2396 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2397 cur_params.dot11MeshRetryTimeout);
2398 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2399 cur_params.dot11MeshConfirmTimeout);
2400 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2401 cur_params.dot11MeshHoldingTimeout);
2402 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2403 cur_params.dot11MeshMaxPeerLinks);
2404 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2405 cur_params.dot11MeshMaxRetries);
2406 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2407 cur_params.dot11MeshTTL);
2408 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2409 cur_params.auto_open_plinks);
2410 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2411 cur_params.dot11MeshHWMPmaxPREQretries);
2412 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2413 cur_params.path_refresh_time);
2414 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2415 cur_params.min_discovery_timeout);
2416 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2417 cur_params.dot11MeshHWMPactivePathTimeout);
2418 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2419 cur_params.dot11MeshHWMPpreqMinInterval);
2420 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2421 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2422 nla_nest_end(msg, pinfoattr);
2423 genlmsg_end(msg, hdr);
2424 err = genlmsg_unicast(msg, info->snd_pid);
2428 genlmsg_cancel(msg, hdr);
2432 cfg80211_put_dev(drv);
2440 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2442 if (table[attr_num]) {\
2443 cfg.param = nla_fn(table[attr_num]); \
2444 mask |= (1 << (attr_num - 1)); \
2448 static struct nla_policy
2449 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] __read_mostly = {
2450 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2451 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2452 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2453 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2454 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2455 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2456 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2458 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2459 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2460 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2461 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2462 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2463 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2466 static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
2470 struct cfg80211_registered_device *drv;
2471 struct net_device *dev;
2472 struct mesh_config cfg;
2473 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2474 struct nlattr *parent_attr;
2476 parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
2479 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2480 parent_attr, nl80211_meshconf_params_policy))
2485 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2489 if (!drv->ops->set_mesh_params) {
2494 /* This makes sure that there aren't more than 32 mesh config
2495 * parameters (otherwise our bitfield scheme would not work.) */
2496 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2498 /* Fill in the params struct */
2500 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2501 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2502 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2503 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2504 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2505 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2506 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2507 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2508 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2509 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2510 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2511 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2512 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2513 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2514 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2515 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2517 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2518 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2519 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2520 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2522 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2523 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2525 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2526 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2528 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2529 dot11MeshHWMPnetDiameterTraversalTime,
2530 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2534 err = drv->ops->set_mesh_params(&drv->wiphy, dev, &cfg, mask);
2538 cfg80211_put_dev(drv);
2546 #undef FILL_IN_MESH_PARAM_IF_SET
2548 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2550 struct sk_buff *msg;
2552 struct nlattr *nl_reg_rules;
2556 mutex_lock(&cfg80211_mutex);
2558 if (!cfg80211_regdomain)
2561 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2567 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2568 NL80211_CMD_GET_REG);
2570 goto nla_put_failure;
2572 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2573 cfg80211_regdomain->alpha2);
2575 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2577 goto nla_put_failure;
2579 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2580 struct nlattr *nl_reg_rule;
2581 const struct ieee80211_reg_rule *reg_rule;
2582 const struct ieee80211_freq_range *freq_range;
2583 const struct ieee80211_power_rule *power_rule;
2585 reg_rule = &cfg80211_regdomain->reg_rules[i];
2586 freq_range = ®_rule->freq_range;
2587 power_rule = ®_rule->power_rule;
2589 nl_reg_rule = nla_nest_start(msg, i);
2591 goto nla_put_failure;
2593 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2595 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2596 freq_range->start_freq_khz);
2597 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2598 freq_range->end_freq_khz);
2599 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2600 freq_range->max_bandwidth_khz);
2601 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
2602 power_rule->max_antenna_gain);
2603 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
2604 power_rule->max_eirp);
2606 nla_nest_end(msg, nl_reg_rule);
2609 nla_nest_end(msg, nl_reg_rules);
2611 genlmsg_end(msg, hdr);
2612 err = genlmsg_unicast(msg, info->snd_pid);
2616 genlmsg_cancel(msg, hdr);
2619 mutex_unlock(&cfg80211_mutex);
2623 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
2625 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
2626 struct nlattr *nl_reg_rule;
2627 char *alpha2 = NULL;
2628 int rem_reg_rules = 0, r = 0;
2629 u32 num_rules = 0, rule_idx = 0, size_of_regd;
2630 struct ieee80211_regdomain *rd = NULL;
2632 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2635 if (!info->attrs[NL80211_ATTR_REG_RULES])
2638 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2640 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2643 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
2647 mutex_lock(&cfg80211_mutex);
2649 if (!reg_is_valid_request(alpha2)) {
2654 size_of_regd = sizeof(struct ieee80211_regdomain) +
2655 (num_rules * sizeof(struct ieee80211_reg_rule));
2657 rd = kzalloc(size_of_regd, GFP_KERNEL);
2663 rd->n_reg_rules = num_rules;
2664 rd->alpha2[0] = alpha2[0];
2665 rd->alpha2[1] = alpha2[1];
2667 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2669 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
2670 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
2672 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
2678 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
2684 BUG_ON(rule_idx != num_rules);
2688 mutex_unlock(&cfg80211_mutex);
2693 mutex_unlock(&cfg80211_mutex);
2698 static int validate_scan_freqs(struct nlattr *freqs)
2700 struct nlattr *attr1, *attr2;
2701 int n_channels = 0, tmp1, tmp2;
2703 nla_for_each_nested(attr1, freqs, tmp1) {
2706 * Some hardware has a limited channel list for
2707 * scanning, and it is pretty much nonsensical
2708 * to scan for a channel twice, so disallow that
2709 * and don't require drivers to check that the
2710 * channel list they get isn't longer than what
2711 * they can scan, as long as they can scan all
2712 * the channels they registered at once.
2714 nla_for_each_nested(attr2, freqs, tmp2)
2715 if (attr1 != attr2 &&
2716 nla_get_u32(attr1) == nla_get_u32(attr2))
2723 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
2725 struct cfg80211_registered_device *drv;
2726 struct net_device *dev;
2727 struct cfg80211_scan_request *request;
2728 struct cfg80211_ssid *ssid;
2729 struct ieee80211_channel *channel;
2730 struct nlattr *attr;
2731 struct wiphy *wiphy;
2732 int err, tmp, n_ssids = 0, n_channels, i;
2733 enum ieee80211_band band;
2736 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2741 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2745 wiphy = &drv->wiphy;
2747 if (!drv->ops->scan) {
2752 if (!netif_running(dev)) {
2757 if (drv->scan_req) {
2762 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2763 n_channels = validate_scan_freqs(
2764 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
2772 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
2773 if (wiphy->bands[band])
2774 n_channels += wiphy->bands[band]->n_channels;
2777 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
2778 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
2781 if (n_ssids > wiphy->max_scan_ssids) {
2786 if (info->attrs[NL80211_ATTR_IE])
2787 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2791 if (ie_len > wiphy->max_scan_ie_len) {
2796 request = kzalloc(sizeof(*request)
2797 + sizeof(*ssid) * n_ssids
2798 + sizeof(channel) * n_channels
2799 + ie_len, GFP_KERNEL);
2805 request->channels = (void *)((char *)request + sizeof(*request));
2806 request->n_channels = n_channels;
2808 request->ssids = (void *)(request->channels + n_channels);
2809 request->n_ssids = n_ssids;
2812 request->ie = (void *)(request->ssids + n_ssids);
2814 request->ie = (void *)(request->channels + n_channels);
2817 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2818 /* user specified, bail out if channel not found */
2819 request->n_channels = n_channels;
2821 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
2822 request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr));
2823 if (!request->channels[i]) {
2832 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2834 if (!wiphy->bands[band])
2836 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
2837 request->channels[i] = &wiphy->bands[band]->channels[j];
2844 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
2845 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
2846 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
2850 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
2851 request->ssids[i].ssid_len = nla_len(attr);
2856 if (info->attrs[NL80211_ATTR_IE]) {
2857 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2858 memcpy((void *)request->ie,
2859 nla_data(info->attrs[NL80211_ATTR_IE]),
2863 request->ifidx = dev->ifindex;
2864 request->wiphy = &drv->wiphy;
2866 drv->scan_req = request;
2867 err = drv->ops->scan(&drv->wiphy, dev, request);
2870 nl80211_send_scan_start(drv, dev);
2874 drv->scan_req = NULL;
2878 cfg80211_put_dev(drv);
2886 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
2887 struct cfg80211_registered_device *rdev,
2888 struct net_device *dev,
2889 struct cfg80211_bss *res)
2894 hdr = nl80211hdr_put(msg, pid, seq, flags,
2895 NL80211_CMD_NEW_SCAN_RESULTS);
2899 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION,
2900 rdev->bss_generation);
2901 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2903 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
2905 goto nla_put_failure;
2906 if (!is_zero_ether_addr(res->bssid))
2907 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
2908 if (res->information_elements && res->len_information_elements)
2909 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
2910 res->len_information_elements,
2911 res->information_elements);
2913 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
2914 if (res->beacon_interval)
2915 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
2916 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
2917 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
2919 switch (rdev->wiphy.signal_type) {
2920 case CFG80211_SIGNAL_TYPE_MBM:
2921 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
2923 case CFG80211_SIGNAL_TYPE_UNSPEC:
2924 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
2930 nla_nest_end(msg, bss);
2932 return genlmsg_end(msg, hdr);
2935 genlmsg_cancel(msg, hdr);
2939 static int nl80211_dump_scan(struct sk_buff *skb,
2940 struct netlink_callback *cb)
2942 struct cfg80211_registered_device *dev;
2943 struct net_device *netdev;
2944 struct cfg80211_internal_bss *scan;
2945 int ifidx = cb->args[0];
2946 int start = cb->args[1], idx = 0;
2950 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
2951 nl80211_fam.attrbuf, nl80211_fam.maxattr,
2956 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
2959 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
2962 cb->args[0] = ifidx;
2965 netdev = dev_get_by_index(&init_net, ifidx);
2969 dev = cfg80211_get_dev_from_ifindex(ifidx);
2972 goto out_put_netdev;
2975 spin_lock_bh(&dev->bss_lock);
2976 cfg80211_bss_expire(dev);
2978 list_for_each_entry(scan, &dev->bss_list, list) {
2981 if (nl80211_send_bss(skb,
2982 NETLINK_CB(cb->skb).pid,
2983 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2984 dev, netdev, &scan->pub) < 0) {
2991 spin_unlock_bh(&dev->bss_lock);
2995 cfg80211_put_dev(dev);
3002 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3004 return auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM ||
3005 auth_type == NL80211_AUTHTYPE_SHARED_KEY ||
3006 auth_type == NL80211_AUTHTYPE_FT ||
3007 auth_type == NL80211_AUTHTYPE_NETWORK_EAP;
3010 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3012 struct cfg80211_registered_device *drv;
3013 struct net_device *dev;
3014 struct cfg80211_auth_request req;
3015 struct wiphy *wiphy;
3018 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3021 if (!info->attrs[NL80211_ATTR_MAC])
3024 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3029 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3033 if (!drv->ops->auth) {
3038 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3043 if (!netif_running(dev)) {
3048 wiphy = &drv->wiphy;
3049 memset(&req, 0, sizeof(req));
3051 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3053 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3054 req.chan = ieee80211_get_channel(
3056 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3063 if (info->attrs[NL80211_ATTR_SSID]) {
3064 req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3065 req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3068 if (info->attrs[NL80211_ATTR_IE]) {
3069 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3070 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3073 req.auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3074 if (!nl80211_valid_auth_type(req.auth_type)) {
3079 err = drv->ops->auth(&drv->wiphy, dev, &req);
3082 cfg80211_put_dev(drv);
3089 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
3091 struct cfg80211_registered_device *drv;
3092 struct net_device *dev;
3093 struct cfg80211_assoc_request req;
3094 struct wiphy *wiphy;
3097 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3100 if (!info->attrs[NL80211_ATTR_MAC] ||
3101 !info->attrs[NL80211_ATTR_SSID])
3106 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3110 if (!drv->ops->assoc) {
3115 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3120 if (!netif_running(dev)) {
3125 wiphy = &drv->wiphy;
3126 memset(&req, 0, sizeof(req));
3128 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3130 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3131 req.chan = ieee80211_get_channel(
3133 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3140 req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3141 req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3143 if (info->attrs[NL80211_ATTR_IE]) {
3144 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3145 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3148 if (info->attrs[NL80211_ATTR_USE_MFP]) {
3149 enum nl80211_mfp use_mfp =
3150 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
3151 if (use_mfp == NL80211_MFP_REQUIRED)
3153 else if (use_mfp != NL80211_MFP_NO) {
3159 req.control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3161 err = drv->ops->assoc(&drv->wiphy, dev, &req);
3164 cfg80211_put_dev(drv);
3171 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3173 struct cfg80211_registered_device *drv;
3174 struct net_device *dev;
3175 struct cfg80211_deauth_request req;
3176 struct wiphy *wiphy;
3179 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3182 if (!info->attrs[NL80211_ATTR_MAC])
3185 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3190 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3194 if (!drv->ops->deauth) {
3199 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3204 if (!netif_running(dev)) {
3209 wiphy = &drv->wiphy;
3210 memset(&req, 0, sizeof(req));
3212 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3214 req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3215 if (req.reason_code == 0) {
3216 /* Reason Code 0 is reserved */
3221 if (info->attrs[NL80211_ATTR_IE]) {
3222 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3223 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3226 err = drv->ops->deauth(&drv->wiphy, dev, &req);
3229 cfg80211_put_dev(drv);
3236 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3238 struct cfg80211_registered_device *drv;
3239 struct net_device *dev;
3240 struct cfg80211_disassoc_request req;
3241 struct wiphy *wiphy;
3244 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3247 if (!info->attrs[NL80211_ATTR_MAC])
3250 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3255 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3259 if (!drv->ops->disassoc) {
3264 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3269 if (!netif_running(dev)) {
3274 wiphy = &drv->wiphy;
3275 memset(&req, 0, sizeof(req));
3277 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3279 req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3280 if (req.reason_code == 0) {
3281 /* Reason Code 0 is reserved */
3286 if (info->attrs[NL80211_ATTR_IE]) {
3287 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3288 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3291 err = drv->ops->disassoc(&drv->wiphy, dev, &req);
3294 cfg80211_put_dev(drv);
3301 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3303 struct cfg80211_registered_device *drv;
3304 struct net_device *dev;
3305 struct cfg80211_ibss_params ibss;
3306 struct wiphy *wiphy;
3309 memset(&ibss, 0, sizeof(ibss));
3311 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3314 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3315 !info->attrs[NL80211_ATTR_SSID] ||
3316 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3319 ibss.beacon_interval = 100;
3321 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3322 ibss.beacon_interval =
3323 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3324 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3330 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3334 if (!drv->ops->join_ibss) {
3339 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3344 if (!netif_running(dev)) {
3349 wiphy = &drv->wiphy;
3351 if (info->attrs[NL80211_ATTR_MAC])
3352 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3353 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3354 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3356 if (info->attrs[NL80211_ATTR_IE]) {
3357 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3358 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3361 ibss.channel = ieee80211_get_channel(wiphy,
3362 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3363 if (!ibss.channel ||
3364 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
3365 ibss.channel->flags & IEEE80211_CHAN_DISABLED) {
3370 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
3372 err = cfg80211_join_ibss(drv, dev, &ibss);
3375 cfg80211_put_dev(drv);
3382 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3384 struct cfg80211_registered_device *drv;
3385 struct net_device *dev;
3390 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3394 if (!drv->ops->leave_ibss) {
3399 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3404 if (!netif_running(dev)) {
3409 err = cfg80211_leave_ibss(drv, dev, false);
3412 cfg80211_put_dev(drv);
3419 static struct genl_ops nl80211_ops[] = {
3421 .cmd = NL80211_CMD_GET_WIPHY,
3422 .doit = nl80211_get_wiphy,
3423 .dumpit = nl80211_dump_wiphy,
3424 .policy = nl80211_policy,
3425 /* can be retrieved by unprivileged users */
3428 .cmd = NL80211_CMD_SET_WIPHY,
3429 .doit = nl80211_set_wiphy,
3430 .policy = nl80211_policy,
3431 .flags = GENL_ADMIN_PERM,
3434 .cmd = NL80211_CMD_GET_INTERFACE,
3435 .doit = nl80211_get_interface,
3436 .dumpit = nl80211_dump_interface,
3437 .policy = nl80211_policy,
3438 /* can be retrieved by unprivileged users */
3441 .cmd = NL80211_CMD_SET_INTERFACE,
3442 .doit = nl80211_set_interface,
3443 .policy = nl80211_policy,
3444 .flags = GENL_ADMIN_PERM,
3447 .cmd = NL80211_CMD_NEW_INTERFACE,
3448 .doit = nl80211_new_interface,
3449 .policy = nl80211_policy,
3450 .flags = GENL_ADMIN_PERM,
3453 .cmd = NL80211_CMD_DEL_INTERFACE,
3454 .doit = nl80211_del_interface,
3455 .policy = nl80211_policy,
3456 .flags = GENL_ADMIN_PERM,
3459 .cmd = NL80211_CMD_GET_KEY,
3460 .doit = nl80211_get_key,
3461 .policy = nl80211_policy,
3462 .flags = GENL_ADMIN_PERM,
3465 .cmd = NL80211_CMD_SET_KEY,
3466 .doit = nl80211_set_key,
3467 .policy = nl80211_policy,
3468 .flags = GENL_ADMIN_PERM,
3471 .cmd = NL80211_CMD_NEW_KEY,
3472 .doit = nl80211_new_key,
3473 .policy = nl80211_policy,
3474 .flags = GENL_ADMIN_PERM,
3477 .cmd = NL80211_CMD_DEL_KEY,
3478 .doit = nl80211_del_key,
3479 .policy = nl80211_policy,
3480 .flags = GENL_ADMIN_PERM,
3483 .cmd = NL80211_CMD_SET_BEACON,
3484 .policy = nl80211_policy,
3485 .flags = GENL_ADMIN_PERM,
3486 .doit = nl80211_addset_beacon,
3489 .cmd = NL80211_CMD_NEW_BEACON,
3490 .policy = nl80211_policy,
3491 .flags = GENL_ADMIN_PERM,
3492 .doit = nl80211_addset_beacon,
3495 .cmd = NL80211_CMD_DEL_BEACON,
3496 .policy = nl80211_policy,
3497 .flags = GENL_ADMIN_PERM,
3498 .doit = nl80211_del_beacon,
3501 .cmd = NL80211_CMD_GET_STATION,
3502 .doit = nl80211_get_station,
3503 .dumpit = nl80211_dump_station,
3504 .policy = nl80211_policy,
3507 .cmd = NL80211_CMD_SET_STATION,
3508 .doit = nl80211_set_station,
3509 .policy = nl80211_policy,
3510 .flags = GENL_ADMIN_PERM,
3513 .cmd = NL80211_CMD_NEW_STATION,
3514 .doit = nl80211_new_station,
3515 .policy = nl80211_policy,
3516 .flags = GENL_ADMIN_PERM,
3519 .cmd = NL80211_CMD_DEL_STATION,
3520 .doit = nl80211_del_station,
3521 .policy = nl80211_policy,
3522 .flags = GENL_ADMIN_PERM,
3525 .cmd = NL80211_CMD_GET_MPATH,
3526 .doit = nl80211_get_mpath,
3527 .dumpit = nl80211_dump_mpath,
3528 .policy = nl80211_policy,
3529 .flags = GENL_ADMIN_PERM,
3532 .cmd = NL80211_CMD_SET_MPATH,
3533 .doit = nl80211_set_mpath,
3534 .policy = nl80211_policy,
3535 .flags = GENL_ADMIN_PERM,
3538 .cmd = NL80211_CMD_NEW_MPATH,
3539 .doit = nl80211_new_mpath,
3540 .policy = nl80211_policy,
3541 .flags = GENL_ADMIN_PERM,
3544 .cmd = NL80211_CMD_DEL_MPATH,
3545 .doit = nl80211_del_mpath,
3546 .policy = nl80211_policy,
3547 .flags = GENL_ADMIN_PERM,
3550 .cmd = NL80211_CMD_SET_BSS,
3551 .doit = nl80211_set_bss,
3552 .policy = nl80211_policy,
3553 .flags = GENL_ADMIN_PERM,
3556 .cmd = NL80211_CMD_GET_REG,
3557 .doit = nl80211_get_reg,
3558 .policy = nl80211_policy,
3559 /* can be retrieved by unprivileged users */
3562 .cmd = NL80211_CMD_SET_REG,
3563 .doit = nl80211_set_reg,
3564 .policy = nl80211_policy,
3565 .flags = GENL_ADMIN_PERM,
3568 .cmd = NL80211_CMD_REQ_SET_REG,
3569 .doit = nl80211_req_set_reg,
3570 .policy = nl80211_policy,
3571 .flags = GENL_ADMIN_PERM,
3574 .cmd = NL80211_CMD_GET_MESH_PARAMS,
3575 .doit = nl80211_get_mesh_params,
3576 .policy = nl80211_policy,
3577 /* can be retrieved by unprivileged users */
3580 .cmd = NL80211_CMD_SET_MESH_PARAMS,
3581 .doit = nl80211_set_mesh_params,
3582 .policy = nl80211_policy,
3583 .flags = GENL_ADMIN_PERM,
3586 .cmd = NL80211_CMD_TRIGGER_SCAN,
3587 .doit = nl80211_trigger_scan,
3588 .policy = nl80211_policy,
3589 .flags = GENL_ADMIN_PERM,
3592 .cmd = NL80211_CMD_GET_SCAN,
3593 .policy = nl80211_policy,
3594 .dumpit = nl80211_dump_scan,
3597 .cmd = NL80211_CMD_AUTHENTICATE,
3598 .doit = nl80211_authenticate,
3599 .policy = nl80211_policy,
3600 .flags = GENL_ADMIN_PERM,
3603 .cmd = NL80211_CMD_ASSOCIATE,
3604 .doit = nl80211_associate,
3605 .policy = nl80211_policy,
3606 .flags = GENL_ADMIN_PERM,
3609 .cmd = NL80211_CMD_DEAUTHENTICATE,
3610 .doit = nl80211_deauthenticate,
3611 .policy = nl80211_policy,
3612 .flags = GENL_ADMIN_PERM,
3615 .cmd = NL80211_CMD_DISASSOCIATE,
3616 .doit = nl80211_disassociate,
3617 .policy = nl80211_policy,
3618 .flags = GENL_ADMIN_PERM,
3621 .cmd = NL80211_CMD_JOIN_IBSS,
3622 .doit = nl80211_join_ibss,
3623 .policy = nl80211_policy,
3624 .flags = GENL_ADMIN_PERM,
3627 .cmd = NL80211_CMD_LEAVE_IBSS,
3628 .doit = nl80211_leave_ibss,
3629 .policy = nl80211_policy,
3630 .flags = GENL_ADMIN_PERM,
3633 static struct genl_multicast_group nl80211_mlme_mcgrp = {
3637 /* multicast groups */
3638 static struct genl_multicast_group nl80211_config_mcgrp = {
3641 static struct genl_multicast_group nl80211_scan_mcgrp = {
3644 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
3645 .name = "regulatory",
3648 /* notification functions */
3650 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
3652 struct sk_buff *msg;
3654 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3658 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
3663 genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
3666 static int nl80211_add_scan_req(struct sk_buff *msg,
3667 struct cfg80211_registered_device *rdev)
3669 struct cfg80211_scan_request *req = rdev->scan_req;
3670 struct nlattr *nest;
3676 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
3678 goto nla_put_failure;
3679 for (i = 0; i < req->n_ssids; i++)
3680 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
3681 nla_nest_end(msg, nest);
3683 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
3685 goto nla_put_failure;
3686 for (i = 0; i < req->n_channels; i++)
3687 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
3688 nla_nest_end(msg, nest);
3691 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
3698 static int nl80211_send_scan_msg(struct sk_buff *msg,
3699 struct cfg80211_registered_device *rdev,
3700 struct net_device *netdev,
3701 u32 pid, u32 seq, int flags,
3706 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
3710 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3711 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3713 /* ignore errors and send incomplete event anyway */
3714 nl80211_add_scan_req(msg, rdev);
3716 return genlmsg_end(msg, hdr);
3719 genlmsg_cancel(msg, hdr);
3723 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
3724 struct net_device *netdev)
3726 struct sk_buff *msg;
3728 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
3732 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
3733 NL80211_CMD_TRIGGER_SCAN) < 0) {
3738 genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
3741 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
3742 struct net_device *netdev)
3744 struct sk_buff *msg;
3746 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3750 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
3751 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
3756 genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
3759 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
3760 struct net_device *netdev)
3762 struct sk_buff *msg;
3764 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3768 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
3769 NL80211_CMD_SCAN_ABORTED) < 0) {
3774 genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
3778 * This can happen on global regulatory changes or device specific settings
3779 * based on custom world regulatory domains.
3781 void nl80211_send_reg_change_event(struct regulatory_request *request)
3783 struct sk_buff *msg;
3786 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3790 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
3796 /* Userspace can always count this one always being set */
3797 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
3799 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
3800 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3801 NL80211_REGDOM_TYPE_WORLD);
3802 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
3803 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3804 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
3805 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
3807 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3808 NL80211_REGDOM_TYPE_INTERSECTION);
3810 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3811 NL80211_REGDOM_TYPE_COUNTRY);
3812 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
3815 if (wiphy_idx_valid(request->wiphy_idx))
3816 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
3818 if (genlmsg_end(msg, hdr) < 0) {
3823 genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_KERNEL);
3828 genlmsg_cancel(msg, hdr);
3832 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
3833 struct net_device *netdev,
3834 const u8 *buf, size_t len,
3835 enum nl80211_commands cmd, gfp_t gfp)
3837 struct sk_buff *msg;
3840 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
3844 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
3850 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3851 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3852 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
3854 if (genlmsg_end(msg, hdr) < 0) {
3859 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
3863 genlmsg_cancel(msg, hdr);
3867 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
3868 struct net_device *netdev, const u8 *buf,
3869 size_t len, gfp_t gfp)
3871 nl80211_send_mlme_event(rdev, netdev, buf, len,
3872 NL80211_CMD_AUTHENTICATE, gfp);
3875 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
3876 struct net_device *netdev, const u8 *buf,
3877 size_t len, gfp_t gfp)
3879 nl80211_send_mlme_event(rdev, netdev, buf, len,
3880 NL80211_CMD_ASSOCIATE, gfp);
3883 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
3884 struct net_device *netdev, const u8 *buf,
3885 size_t len, gfp_t gfp)
3887 nl80211_send_mlme_event(rdev, netdev, buf, len,
3888 NL80211_CMD_DEAUTHENTICATE, gfp);
3891 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
3892 struct net_device *netdev, const u8 *buf,
3893 size_t len, gfp_t gfp)
3895 nl80211_send_mlme_event(rdev, netdev, buf, len,
3896 NL80211_CMD_DISASSOCIATE, gfp);
3899 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
3900 struct net_device *netdev, int cmd,
3901 const u8 *addr, gfp_t gfp)
3903 struct sk_buff *msg;
3906 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
3910 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
3916 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3917 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3918 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
3919 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3921 if (genlmsg_end(msg, hdr) < 0) {
3926 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
3930 genlmsg_cancel(msg, hdr);
3934 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
3935 struct net_device *netdev, const u8 *addr,
3938 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
3942 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
3943 struct net_device *netdev, const u8 *addr,
3946 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
3950 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
3951 struct net_device *netdev, const u8 *bssid,
3954 struct sk_buff *msg;
3957 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
3961 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
3967 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3968 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3969 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
3971 if (genlmsg_end(msg, hdr) < 0) {
3976 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
3980 genlmsg_cancel(msg, hdr);
3984 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
3985 struct net_device *netdev, const u8 *addr,
3986 enum nl80211_key_type key_type, int key_id,
3987 const u8 *tsc, gfp_t gfp)
3989 struct sk_buff *msg;
3992 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
3996 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
4002 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4003 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4005 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4006 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
4007 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
4009 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
4011 if (genlmsg_end(msg, hdr) < 0) {
4016 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
4020 genlmsg_cancel(msg, hdr);
4024 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
4025 struct ieee80211_channel *channel_before,
4026 struct ieee80211_channel *channel_after)
4028 struct sk_buff *msg;
4030 struct nlattr *nl_freq;
4032 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
4036 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
4043 * Since we are applying the beacon hint to a wiphy we know its
4044 * wiphy_idx is valid
4046 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
4049 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
4051 goto nla_put_failure;
4052 if (nl80211_msg_put_channel(msg, channel_before))
4053 goto nla_put_failure;
4054 nla_nest_end(msg, nl_freq);
4057 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
4059 goto nla_put_failure;
4060 if (nl80211_msg_put_channel(msg, channel_after))
4061 goto nla_put_failure;
4062 nla_nest_end(msg, nl_freq);
4064 if (genlmsg_end(msg, hdr) < 0) {
4069 genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_ATOMIC);
4074 genlmsg_cancel(msg, hdr);
4078 /* initialisation/exit functions */
4080 int nl80211_init(void)
4084 err = genl_register_family_with_ops(&nl80211_fam,
4085 nl80211_ops, ARRAY_SIZE(nl80211_ops));
4089 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
4093 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
4097 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
4101 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
4107 genl_unregister_family(&nl80211_fam);
4111 void nl80211_exit(void)
4113 genl_unregister_family(&nl80211_fam);