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 result = PTR_ERR(rdev);
454 mutex_lock(&rdev->mtx);
456 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
457 result = cfg80211_dev_rename(
458 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
460 mutex_unlock(&cfg80211_mutex);
465 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
466 struct ieee80211_txq_params txq_params;
467 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
469 if (!rdev->ops->set_txq_params) {
470 result = -EOPNOTSUPP;
474 nla_for_each_nested(nl_txq_params,
475 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
477 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
478 nla_data(nl_txq_params),
479 nla_len(nl_txq_params),
481 result = parse_txq_params(tb, &txq_params);
485 result = rdev->ops->set_txq_params(&rdev->wiphy,
492 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
493 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
494 struct ieee80211_channel *chan;
495 struct ieee80211_sta_ht_cap *ht_cap;
498 if (!rdev->ops->set_channel) {
499 result = -EOPNOTSUPP;
505 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)
515 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
516 chan = ieee80211_get_channel(&rdev->wiphy, freq);
518 /* Primary channel not allowed */
519 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
522 if (channel_type == NL80211_CHAN_HT40MINUS &&
523 (chan->flags & IEEE80211_CHAN_NO_HT40MINUS))
525 else if (channel_type == NL80211_CHAN_HT40PLUS &&
526 (chan->flags & IEEE80211_CHAN_NO_HT40PLUS))
530 * At this point we know if that if HT40 was requested
531 * we are allowed to use it and the extension channel
535 ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap;
537 /* no HT capabilities or intolerant */
538 if (channel_type != NL80211_CHAN_NO_HT) {
539 if (!ht_cap->ht_supported)
541 if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) ||
542 (ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT))
546 result = rdev->ops->set_channel(&rdev->wiphy, chan,
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) {
561 changed |= WIPHY_PARAM_RETRY_SHORT;
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) {
571 changed |= WIPHY_PARAM_RETRY_LONG;
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) {
581 if (frag_threshold != (u32) -1) {
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.
588 frag_threshold &= ~0x1;
590 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
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;
600 u8 old_retry_short, old_retry_long;
601 u32 old_frag_threshold, old_rts_threshold;
603 if (!rdev->ops->set_wiphy_params) {
604 result = -EOPNOTSUPP;
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;
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;
622 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
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;
632 mutex_unlock(&rdev->mtx);
639 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
640 struct cfg80211_registered_device *rdev,
641 struct net_device *dev)
645 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
649 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
650 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
651 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
652 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
653 return genlmsg_end(msg, hdr);
656 genlmsg_cancel(msg, hdr);
660 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
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;
669 mutex_lock(&cfg80211_mutex);
670 list_for_each_entry(dev, &cfg80211_drv_list, list) {
671 if (wp_idx < wp_start) {
677 mutex_lock(&dev->devlist_mtx);
678 list_for_each_entry(wdev, &dev->netdev_list, list) {
679 if (if_idx < if_start) {
683 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
684 cb->nlh->nlmsg_seq, NLM_F_MULTI,
685 dev, wdev->netdev) < 0) {
686 mutex_unlock(&dev->devlist_mtx);
691 mutex_unlock(&dev->devlist_mtx);
696 mutex_unlock(&cfg80211_mutex);
698 cb->args[0] = wp_idx;
699 cb->args[1] = if_idx;
704 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
707 struct cfg80211_registered_device *dev;
708 struct net_device *netdev;
711 err = get_drv_dev_by_info_ifindex(info->attrs, &dev, &netdev);
715 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
719 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
724 cfg80211_put_dev(dev);
726 return genlmsg_unicast(msg, info->snd_pid);
732 cfg80211_put_dev(dev);
736 static 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 },
744 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
746 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
754 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
755 nla, mntr_flags_policy))
758 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
760 *mntrflags |= (1<<flag);
765 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
767 struct cfg80211_registered_device *drv;
768 struct vif_params params;
770 enum nl80211_iftype otype, ntype;
771 struct net_device *dev;
772 u32 _flags, *flags = NULL;
775 memset(¶ms, 0, sizeof(params));
779 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
783 ifindex = dev->ifindex;
784 otype = ntype = dev->ieee80211_ptr->iftype;
787 if (info->attrs[NL80211_ATTR_IFTYPE]) {
788 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
791 if (ntype > NL80211_IFTYPE_MAX) {
797 if (!drv->ops->change_virtual_intf ||
798 !(drv->wiphy.interface_modes & (1 << ntype))) {
803 if (info->attrs[NL80211_ATTR_MESH_ID]) {
804 if (ntype != NL80211_IFTYPE_MESH_POINT) {
808 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
809 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
813 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
814 if (ntype != NL80211_IFTYPE_MONITOR) {
818 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
828 err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
829 ntype, flags, ¶ms);
833 dev = __dev_get_by_index(&init_net, ifindex);
834 WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != ntype));
836 if (dev && !err && (ntype != otype)) {
837 if (otype == NL80211_IFTYPE_ADHOC)
838 cfg80211_clear_ibss(dev, false);
842 cfg80211_put_dev(drv);
848 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
850 struct cfg80211_registered_device *drv;
851 struct vif_params params;
853 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
856 memset(¶ms, 0, sizeof(params));
858 if (!info->attrs[NL80211_ATTR_IFNAME])
861 if (info->attrs[NL80211_ATTR_IFTYPE]) {
862 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
863 if (type > NL80211_IFTYPE_MAX)
869 drv = cfg80211_get_dev_from_info(info);
875 if (!drv->ops->add_virtual_intf ||
876 !(drv->wiphy.interface_modes & (1 << type))) {
881 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]);
887 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
888 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
890 err = drv->ops->add_virtual_intf(&drv->wiphy,
891 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
892 type, err ? NULL : &flags, ¶ms);
895 cfg80211_put_dev(drv);
901 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
903 struct cfg80211_registered_device *drv;
905 struct net_device *dev;
909 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
912 ifindex = dev->ifindex;
915 if (!drv->ops->del_virtual_intf) {
920 err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex);
923 cfg80211_put_dev(drv);
929 struct get_key_cookie {
934 static void get_key_callback(void *c, struct key_params *params)
936 struct get_key_cookie *cookie = c;
939 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
940 params->key_len, params->key);
943 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
944 params->seq_len, params->seq);
947 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
955 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
957 struct cfg80211_registered_device *drv;
959 struct net_device *dev;
962 struct get_key_cookie cookie = {
968 if (info->attrs[NL80211_ATTR_KEY_IDX])
969 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
974 if (info->attrs[NL80211_ATTR_MAC])
975 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
979 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
983 if (!drv->ops->get_key) {
988 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
994 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
995 NL80211_CMD_NEW_KEY);
1004 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1005 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1007 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1009 err = drv->ops->get_key(&drv->wiphy, dev, key_idx, mac_addr,
1010 &cookie, get_key_callback);
1016 goto nla_put_failure;
1018 genlmsg_end(msg, hdr);
1019 err = genlmsg_unicast(msg, info->snd_pid);
1026 cfg80211_put_dev(drv);
1034 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1036 struct cfg80211_registered_device *drv;
1038 struct net_device *dev;
1040 int (*func)(struct wiphy *wiphy, struct net_device *netdev,
1043 if (!info->attrs[NL80211_ATTR_KEY_IDX])
1046 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1048 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]) {
1049 if (key_idx < 4 || key_idx > 5)
1051 } else if (key_idx > 3)
1054 /* currently only support setting default key */
1055 if (!info->attrs[NL80211_ATTR_KEY_DEFAULT] &&
1056 !info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT])
1061 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1065 if (info->attrs[NL80211_ATTR_KEY_DEFAULT])
1066 func = drv->ops->set_default_key;
1068 func = drv->ops->set_default_mgmt_key;
1075 err = func(&drv->wiphy, dev, key_idx);
1076 #ifdef CONFIG_WIRELESS_EXT
1078 if (func == drv->ops->set_default_key)
1079 dev->ieee80211_ptr->wext.default_key = key_idx;
1081 dev->ieee80211_ptr->wext.default_mgmt_key = key_idx;
1086 cfg80211_put_dev(drv);
1095 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1097 struct cfg80211_registered_device *drv;
1099 struct net_device *dev;
1100 struct key_params params;
1102 u8 *mac_addr = NULL;
1104 memset(¶ms, 0, sizeof(params));
1106 if (!info->attrs[NL80211_ATTR_KEY_CIPHER])
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]);
1114 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]);
1119 if (info->attrs[NL80211_ATTR_KEY_IDX])
1120 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1122 params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1124 if (info->attrs[NL80211_ATTR_MAC])
1125 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1127 if (cfg80211_validate_key_settings(¶ms, key_idx, mac_addr))
1132 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1136 for (i = 0; i < drv->wiphy.n_cipher_suites; i++)
1137 if (params.cipher == drv->wiphy.cipher_suites[i])
1139 if (i == drv->wiphy.n_cipher_suites) {
1144 if (!drv->ops->add_key) {
1149 err = drv->ops->add_key(&drv->wiphy, dev, key_idx, mac_addr, ¶ms);
1152 cfg80211_put_dev(drv);
1160 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1162 struct cfg80211_registered_device *drv;
1164 struct net_device *dev;
1166 u8 *mac_addr = NULL;
1168 if (info->attrs[NL80211_ATTR_KEY_IDX])
1169 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1174 if (info->attrs[NL80211_ATTR_MAC])
1175 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1179 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1183 if (!drv->ops->del_key) {
1188 err = drv->ops->del_key(&drv->wiphy, dev, key_idx, mac_addr);
1190 #ifdef CONFIG_WIRELESS_EXT
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;
1200 cfg80211_put_dev(drv);
1209 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1211 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1212 struct beacon_parameters *info);
1213 struct cfg80211_registered_device *drv;
1215 struct net_device *dev;
1216 struct beacon_parameters params;
1219 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1224 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1228 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1233 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]) {
1243 call = drv->ops->add_beacon;
1245 case NL80211_CMD_SET_BEACON:
1246 call = drv->ops->set_beacon;
1259 memset(¶ms, 0, sizeof(params));
1261 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
1263 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1267 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
1268 params.dtim_period =
1269 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1273 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1274 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1276 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1280 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1281 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1283 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1292 err = call(&drv->wiphy, dev, ¶ms);
1295 cfg80211_put_dev(drv);
1303 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1305 struct cfg80211_registered_device *drv;
1307 struct net_device *dev;
1311 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1315 if (!drv->ops->del_beacon) {
1320 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1324 err = drv->ops->del_beacon(&drv->wiphy, dev);
1327 cfg80211_put_dev(drv);
1335 static 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 },
1339 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
1342 static int parse_station_flags(struct genl_info *info,
1343 struct station_parameters *params)
1345 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
1350 * Try parsing the new attribute first so userspace
1351 * can specify both for older kernels.
1353 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
1355 struct nl80211_sta_flag_update *sta_flags;
1357 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))
1366 /* if present, parse the old attribute */
1368 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
1372 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1373 nla, sta_flags_policy))
1376 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
1377 params->sta_flags_mask &= ~1;
1379 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1381 params->sta_flags_set |= (1<<flag);
1386 static u16 nl80211_calculate_bitrate(struct rate_info *rate)
1388 int modulation, streams, bitrate;
1390 if (!(rate->flags & RATE_INFO_FLAGS_MCS))
1391 return rate->legacy;
1393 /* the formula below does only work for MCS values smaller than 32 */
1394 if (rate->mcs >= 32)
1397 modulation = rate->mcs & 7;
1398 streams = (rate->mcs >> 3) + 1;
1400 bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ?
1404 bitrate *= (modulation + 1);
1405 else if (modulation == 4)
1406 bitrate *= (modulation + 2);
1408 bitrate *= (modulation + 3);
1412 if (rate->flags & RATE_INFO_FLAGS_SHORT_GI)
1413 bitrate = (bitrate / 9) * 10;
1415 /* do NOT round down here */
1416 return (bitrate + 50000) / 100000;
1419 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1420 int flags, struct net_device *dev,
1421 u8 *mac_addr, struct station_info *sinfo)
1424 struct nlattr *sinfoattr, *txrate;
1427 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1431 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1432 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1434 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1436 goto nla_put_failure;
1437 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,
1443 if (sinfo->filled & STATION_INFO_TX_BYTES)
1444 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1446 if (sinfo->filled & STATION_INFO_LLID)
1447 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
1449 if (sinfo->filled & STATION_INFO_PLID)
1450 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
1452 if (sinfo->filled & STATION_INFO_PLINK_STATE)
1453 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
1454 sinfo->plink_state);
1455 if (sinfo->filled & STATION_INFO_SIGNAL)
1456 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
1458 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
1459 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
1461 goto nla_put_failure;
1463 /* nl80211_calculate_bitrate will return 0 for mcs >= 32 */
1464 bitrate = nl80211_calculate_bitrate(&sinfo->txrate);
1466 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
1468 if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
1469 NLA_PUT_U8(msg, NL80211_RATE_INFO_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);
1476 nla_nest_end(msg, txrate);
1478 if (sinfo->filled & STATION_INFO_RX_PACKETS)
1479 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
1481 if (sinfo->filled & STATION_INFO_TX_PACKETS)
1482 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
1484 nla_nest_end(msg, sinfoattr);
1486 return genlmsg_end(msg, hdr);
1489 genlmsg_cancel(msg, hdr);
1493 static int nl80211_dump_station(struct sk_buff *skb,
1494 struct netlink_callback *cb)
1496 struct station_info sinfo;
1497 struct cfg80211_registered_device *dev;
1498 struct net_device *netdev;
1499 u8 mac_addr[ETH_ALEN];
1500 int ifidx = cb->args[0];
1501 int sta_idx = cb->args[1];
1505 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1506 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1511 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1514 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1521 netdev = __dev_get_by_index(&init_net, ifidx);
1527 dev = cfg80211_get_dev_from_ifindex(ifidx);
1533 if (!dev->ops->dump_station) {
1539 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
1546 if (nl80211_send_station(skb,
1547 NETLINK_CB(cb->skb).pid,
1548 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1558 cb->args[1] = sta_idx;
1561 cfg80211_put_dev(dev);
1568 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
1570 struct cfg80211_registered_device *drv;
1572 struct net_device *dev;
1573 struct station_info sinfo;
1574 struct sk_buff *msg;
1575 u8 *mac_addr = NULL;
1577 memset(&sinfo, 0, sizeof(sinfo));
1579 if (!info->attrs[NL80211_ATTR_MAC])
1582 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1586 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1590 if (!drv->ops->get_station) {
1595 err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &sinfo);
1599 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1603 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
1604 dev, mac_addr, &sinfo) < 0)
1607 err = genlmsg_unicast(msg, info->snd_pid);
1613 cfg80211_put_dev(drv);
1622 * Get vlan interface making sure it is on the right wiphy.
1624 static int get_vlan(struct nlattr *vlanattr,
1625 struct cfg80211_registered_device *rdev,
1626 struct net_device **vlan)
1631 *vlan = dev_get_by_index(&init_net, nla_get_u32(vlanattr));
1634 if (!(*vlan)->ieee80211_ptr)
1636 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
1642 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
1644 struct cfg80211_registered_device *drv;
1646 struct net_device *dev;
1647 struct station_parameters params;
1648 u8 *mac_addr = NULL;
1650 memset(¶ms, 0, sizeof(params));
1652 params.listen_interval = -1;
1654 if (info->attrs[NL80211_ATTR_STA_AID])
1657 if (!info->attrs[NL80211_ATTR_MAC])
1660 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
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]);
1669 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1670 params.listen_interval =
1671 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1673 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1675 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1677 if (parse_station_flags(info, ¶ms))
1680 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
1681 params.plink_action =
1682 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
1686 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1690 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan);
1694 /* validate settings */
1697 switch (dev->ieee80211_ptr->iftype) {
1698 case NL80211_IFTYPE_AP:
1699 case NL80211_IFTYPE_AP_VLAN:
1700 /* disallow mesh-specific things */
1701 if (params.plink_action)
1704 case NL80211_IFTYPE_STATION:
1705 /* disallow everything but AUTHORIZED flag */
1706 if (params.plink_action)
1710 if (params.supported_rates)
1714 if (params.listen_interval >= 0)
1716 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
1719 case NL80211_IFTYPE_MESH_POINT:
1720 /* disallow things mesh doesn't support */
1725 if (params.listen_interval >= 0)
1727 if (params.supported_rates)
1729 if (params.sta_flags_mask)
1739 if (!drv->ops->change_station) {
1744 err = drv->ops->change_station(&drv->wiphy, dev, mac_addr, ¶ms);
1748 dev_put(params.vlan);
1749 cfg80211_put_dev(drv);
1757 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
1759 struct cfg80211_registered_device *drv;
1761 struct net_device *dev;
1762 struct station_parameters params;
1763 u8 *mac_addr = NULL;
1765 memset(¶ms, 0, sizeof(params));
1767 if (!info->attrs[NL80211_ATTR_MAC])
1770 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1773 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
1776 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1777 params.supported_rates =
1778 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1779 params.supported_rates_len =
1780 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1781 params.listen_interval =
1782 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1784 if (info->attrs[NL80211_ATTR_STA_AID]) {
1785 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
1786 if (!params.aid || params.aid > IEEE80211_MAX_AID)
1790 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1792 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1794 if (parse_station_flags(info, ¶ms))
1799 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1803 err = get_vlan(info->attrs[NL80211_ATTR_STA_VLAN], drv, ¶ms.vlan);
1807 /* validate settings */
1810 switch (dev->ieee80211_ptr->iftype) {
1811 case NL80211_IFTYPE_AP:
1812 case NL80211_IFTYPE_AP_VLAN:
1813 /* all ok but must have AID */
1817 case NL80211_IFTYPE_MESH_POINT:
1818 /* disallow things mesh doesn't support */
1825 if (params.listen_interval >= 0)
1827 if (params.supported_rates)
1829 if (params.sta_flags_mask)
1839 if (!drv->ops->add_station) {
1844 if (!netif_running(dev)) {
1849 err = drv->ops->add_station(&drv->wiphy, dev, mac_addr, ¶ms);
1853 dev_put(params.vlan);
1854 cfg80211_put_dev(drv);
1862 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
1864 struct cfg80211_registered_device *drv;
1866 struct net_device *dev;
1867 u8 *mac_addr = NULL;
1869 if (info->attrs[NL80211_ATTR_MAC])
1870 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1874 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
1878 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1879 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
1880 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
1885 if (!drv->ops->del_station) {
1890 err = drv->ops->del_station(&drv->wiphy, dev, mac_addr);
1893 cfg80211_put_dev(drv);
1901 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
1902 int flags, struct net_device *dev,
1903 u8 *dst, u8 *next_hop,
1904 struct mpath_info *pinfo)
1907 struct nlattr *pinfoattr;
1909 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1913 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1914 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
1915 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
1917 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
1919 goto nla_put_failure;
1920 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
1921 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
1923 if (pinfo->filled & MPATH_INFO_DSN)
1924 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
1926 if (pinfo->filled & MPATH_INFO_METRIC)
1927 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
1929 if (pinfo->filled & MPATH_INFO_EXPTIME)
1930 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
1932 if (pinfo->filled & MPATH_INFO_FLAGS)
1933 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
1935 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
1936 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
1937 pinfo->discovery_timeout);
1938 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
1939 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
1940 pinfo->discovery_retries);
1942 nla_nest_end(msg, pinfoattr);
1944 return genlmsg_end(msg, hdr);
1947 genlmsg_cancel(msg, hdr);
1951 static int nl80211_dump_mpath(struct sk_buff *skb,
1952 struct netlink_callback *cb)
1954 struct mpath_info pinfo;
1955 struct cfg80211_registered_device *dev;
1956 struct net_device *netdev;
1958 u8 next_hop[ETH_ALEN];
1959 int ifidx = cb->args[0];
1960 int path_idx = cb->args[1];
1964 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1965 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1970 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1973 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1980 netdev = __dev_get_by_index(&init_net, ifidx);
1986 dev = cfg80211_get_dev_from_ifindex(ifidx);
1992 if (!dev->ops->dump_mpath) {
1997 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2003 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2004 dst, next_hop, &pinfo);
2010 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2011 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2012 netdev, dst, next_hop,
2021 cb->args[1] = path_idx;
2024 cfg80211_put_dev(dev);
2031 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2033 struct cfg80211_registered_device *drv;
2035 struct net_device *dev;
2036 struct mpath_info pinfo;
2037 struct sk_buff *msg;
2039 u8 next_hop[ETH_ALEN];
2041 memset(&pinfo, 0, sizeof(pinfo));
2043 if (!info->attrs[NL80211_ATTR_MAC])
2046 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2050 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2054 if (!drv->ops->get_mpath) {
2059 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2064 err = drv->ops->get_mpath(&drv->wiphy, dev, dst, next_hop, &pinfo);
2068 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2072 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2073 dev, dst, next_hop, &pinfo) < 0)
2076 err = genlmsg_unicast(msg, info->snd_pid);
2082 cfg80211_put_dev(drv);
2090 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2092 struct cfg80211_registered_device *drv;
2094 struct net_device *dev;
2096 u8 *next_hop = NULL;
2098 if (!info->attrs[NL80211_ATTR_MAC])
2101 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2104 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2105 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2109 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2113 if (!drv->ops->change_mpath) {
2118 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2123 if (!netif_running(dev)) {
2128 err = drv->ops->change_mpath(&drv->wiphy, dev, dst, next_hop);
2131 cfg80211_put_dev(drv);
2138 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2140 struct cfg80211_registered_device *drv;
2142 struct net_device *dev;
2144 u8 *next_hop = NULL;
2146 if (!info->attrs[NL80211_ATTR_MAC])
2149 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2152 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2153 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2157 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2161 if (!drv->ops->add_mpath) {
2166 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2171 if (!netif_running(dev)) {
2176 err = drv->ops->add_mpath(&drv->wiphy, dev, dst, next_hop);
2179 cfg80211_put_dev(drv);
2187 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2189 struct cfg80211_registered_device *drv;
2191 struct net_device *dev;
2194 if (info->attrs[NL80211_ATTR_MAC])
2195 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2199 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2203 if (!drv->ops->del_mpath) {
2208 err = drv->ops->del_mpath(&drv->wiphy, dev, dst);
2211 cfg80211_put_dev(drv);
2219 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2221 struct cfg80211_registered_device *drv;
2223 struct net_device *dev;
2224 struct bss_parameters params;
2226 memset(¶ms, 0, sizeof(params));
2227 /* default to not changing parameters */
2228 params.use_cts_prot = -1;
2229 params.use_short_preamble = -1;
2230 params.use_short_slot_time = -1;
2232 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2233 params.use_cts_prot =
2234 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2235 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2236 params.use_short_preamble =
2237 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2238 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2239 params.use_short_slot_time =
2240 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2241 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2242 params.basic_rates =
2243 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2244 params.basic_rates_len =
2245 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2250 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2254 if (!drv->ops->change_bss) {
2259 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
2264 err = drv->ops->change_bss(&drv->wiphy, dev, ¶ms);
2267 cfg80211_put_dev(drv);
2275 static const struct nla_policy
2276 reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2277 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2278 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2279 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2280 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2281 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2282 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2285 static int parse_reg_rule(struct nlattr *tb[],
2286 struct ieee80211_reg_rule *reg_rule)
2288 struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
2289 struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
2291 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2293 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2295 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2297 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2299 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2302 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2304 freq_range->start_freq_khz =
2305 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2306 freq_range->end_freq_khz =
2307 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2308 freq_range->max_bandwidth_khz =
2309 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2311 power_rule->max_eirp =
2312 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2314 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2315 power_rule->max_antenna_gain =
2316 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2321 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2327 * You should only get this when cfg80211 hasn't yet initialized
2328 * completely when built-in to the kernel right between the time
2329 * window between nl80211_init() and regulatory_init(), if that is
2332 mutex_lock(&cfg80211_mutex);
2333 if (unlikely(!cfg80211_regdomain)) {
2334 mutex_unlock(&cfg80211_mutex);
2335 return -EINPROGRESS;
2337 mutex_unlock(&cfg80211_mutex);
2339 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2342 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2344 #ifdef CONFIG_WIRELESS_OLD_REGULATORY
2345 /* We ignore world regdom requests with the old regdom setup */
2346 if (is_world_regdom(data))
2350 r = regulatory_hint_user(data);
2355 static int nl80211_get_mesh_params(struct sk_buff *skb,
2356 struct genl_info *info)
2358 struct cfg80211_registered_device *drv;
2359 struct mesh_config cur_params;
2361 struct net_device *dev;
2363 struct nlattr *pinfoattr;
2364 struct sk_buff *msg;
2368 /* Look up our device */
2369 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2373 if (!drv->ops->get_mesh_params) {
2378 /* Get the mesh params */
2379 err = drv->ops->get_mesh_params(&drv->wiphy, dev, &cur_params);
2383 /* Draw up a netlink message to send back */
2384 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2389 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2390 NL80211_CMD_GET_MESH_PARAMS);
2392 goto nla_put_failure;
2393 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
2395 goto nla_put_failure;
2396 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2397 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2398 cur_params.dot11MeshRetryTimeout);
2399 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2400 cur_params.dot11MeshConfirmTimeout);
2401 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2402 cur_params.dot11MeshHoldingTimeout);
2403 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2404 cur_params.dot11MeshMaxPeerLinks);
2405 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2406 cur_params.dot11MeshMaxRetries);
2407 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2408 cur_params.dot11MeshTTL);
2409 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2410 cur_params.auto_open_plinks);
2411 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2412 cur_params.dot11MeshHWMPmaxPREQretries);
2413 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2414 cur_params.path_refresh_time);
2415 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2416 cur_params.min_discovery_timeout);
2417 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2418 cur_params.dot11MeshHWMPactivePathTimeout);
2419 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2420 cur_params.dot11MeshHWMPpreqMinInterval);
2421 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2422 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2423 nla_nest_end(msg, pinfoattr);
2424 genlmsg_end(msg, hdr);
2425 err = genlmsg_unicast(msg, info->snd_pid);
2429 genlmsg_cancel(msg, hdr);
2433 cfg80211_put_dev(drv);
2441 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2443 if (table[attr_num]) {\
2444 cfg.param = nla_fn(table[attr_num]); \
2445 mask |= (1 << (attr_num - 1)); \
2449 static struct nla_policy
2450 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] __read_mostly = {
2451 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2452 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2453 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2454 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2455 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2456 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2457 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2459 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2460 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2461 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2462 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2463 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2464 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2467 static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
2471 struct cfg80211_registered_device *drv;
2472 struct net_device *dev;
2473 struct mesh_config cfg;
2474 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2475 struct nlattr *parent_attr;
2477 parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
2480 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2481 parent_attr, nl80211_meshconf_params_policy))
2486 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2490 if (!drv->ops->set_mesh_params) {
2495 /* This makes sure that there aren't more than 32 mesh config
2496 * parameters (otherwise our bitfield scheme would not work.) */
2497 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2499 /* Fill in the params struct */
2501 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2502 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2503 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2504 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2505 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2506 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2507 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2508 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2509 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2510 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2511 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2512 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2513 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2514 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2515 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2516 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2518 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2519 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2520 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2521 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2523 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2524 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2526 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2527 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2529 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2530 dot11MeshHWMPnetDiameterTraversalTime,
2531 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2535 err = drv->ops->set_mesh_params(&drv->wiphy, dev, &cfg, mask);
2539 cfg80211_put_dev(drv);
2547 #undef FILL_IN_MESH_PARAM_IF_SET
2549 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2551 struct sk_buff *msg;
2553 struct nlattr *nl_reg_rules;
2557 mutex_lock(&cfg80211_mutex);
2559 if (!cfg80211_regdomain)
2562 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2568 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2569 NL80211_CMD_GET_REG);
2571 goto nla_put_failure;
2573 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2574 cfg80211_regdomain->alpha2);
2576 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2578 goto nla_put_failure;
2580 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2581 struct nlattr *nl_reg_rule;
2582 const struct ieee80211_reg_rule *reg_rule;
2583 const struct ieee80211_freq_range *freq_range;
2584 const struct ieee80211_power_rule *power_rule;
2586 reg_rule = &cfg80211_regdomain->reg_rules[i];
2587 freq_range = ®_rule->freq_range;
2588 power_rule = ®_rule->power_rule;
2590 nl_reg_rule = nla_nest_start(msg, i);
2592 goto nla_put_failure;
2594 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2596 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2597 freq_range->start_freq_khz);
2598 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2599 freq_range->end_freq_khz);
2600 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2601 freq_range->max_bandwidth_khz);
2602 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
2603 power_rule->max_antenna_gain);
2604 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
2605 power_rule->max_eirp);
2607 nla_nest_end(msg, nl_reg_rule);
2610 nla_nest_end(msg, nl_reg_rules);
2612 genlmsg_end(msg, hdr);
2613 err = genlmsg_unicast(msg, info->snd_pid);
2617 genlmsg_cancel(msg, hdr);
2620 mutex_unlock(&cfg80211_mutex);
2624 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
2626 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
2627 struct nlattr *nl_reg_rule;
2628 char *alpha2 = NULL;
2629 int rem_reg_rules = 0, r = 0;
2630 u32 num_rules = 0, rule_idx = 0, size_of_regd;
2631 struct ieee80211_regdomain *rd = NULL;
2633 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2636 if (!info->attrs[NL80211_ATTR_REG_RULES])
2639 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2641 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2644 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
2648 mutex_lock(&cfg80211_mutex);
2650 if (!reg_is_valid_request(alpha2)) {
2655 size_of_regd = sizeof(struct ieee80211_regdomain) +
2656 (num_rules * sizeof(struct ieee80211_reg_rule));
2658 rd = kzalloc(size_of_regd, GFP_KERNEL);
2664 rd->n_reg_rules = num_rules;
2665 rd->alpha2[0] = alpha2[0];
2666 rd->alpha2[1] = alpha2[1];
2668 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2670 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
2671 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
2673 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
2679 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
2685 BUG_ON(rule_idx != num_rules);
2689 mutex_unlock(&cfg80211_mutex);
2694 mutex_unlock(&cfg80211_mutex);
2699 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
2701 struct cfg80211_registered_device *drv;
2702 struct net_device *dev;
2703 struct cfg80211_scan_request *request;
2704 struct cfg80211_ssid *ssid;
2705 struct ieee80211_channel *channel;
2706 struct nlattr *attr;
2707 struct wiphy *wiphy;
2708 int err, tmp, n_ssids = 0, n_channels = 0, i;
2709 enum ieee80211_band band;
2712 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2717 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
2721 wiphy = &drv->wiphy;
2723 if (!drv->ops->scan) {
2728 if (!netif_running(dev)) {
2733 if (drv->scan_req) {
2738 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2739 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp)
2746 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
2747 if (wiphy->bands[band])
2748 n_channels += wiphy->bands[band]->n_channels;
2751 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
2752 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
2755 if (n_ssids > wiphy->max_scan_ssids) {
2760 if (info->attrs[NL80211_ATTR_IE])
2761 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2765 if (ie_len > wiphy->max_scan_ie_len) {
2770 request = kzalloc(sizeof(*request)
2771 + sizeof(*ssid) * n_ssids
2772 + sizeof(channel) * n_channels
2773 + ie_len, GFP_KERNEL);
2779 request->channels = (void *)((char *)request + sizeof(*request));
2780 request->n_channels = n_channels;
2782 request->ssids = (void *)(request->channels + n_channels);
2783 request->n_ssids = n_ssids;
2786 request->ie = (void *)(request->ssids + n_ssids);
2788 request->ie = (void *)(request->channels + n_channels);
2791 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2792 /* user specified, bail out if channel not found */
2793 request->n_channels = n_channels;
2795 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
2796 request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr));
2797 if (!request->channels[i]) {
2806 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2808 if (!wiphy->bands[band])
2810 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
2811 request->channels[i] = &wiphy->bands[band]->channels[j];
2818 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
2819 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
2820 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
2824 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
2825 request->ssids[i].ssid_len = nla_len(attr);
2830 if (info->attrs[NL80211_ATTR_IE]) {
2831 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2832 memcpy((void *)request->ie,
2833 nla_data(info->attrs[NL80211_ATTR_IE]),
2837 request->ifidx = dev->ifindex;
2838 request->wiphy = &drv->wiphy;
2840 drv->scan_req = request;
2841 err = drv->ops->scan(&drv->wiphy, dev, request);
2845 drv->scan_req = NULL;
2849 cfg80211_put_dev(drv);
2857 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
2858 struct cfg80211_registered_device *rdev,
2859 struct net_device *dev,
2860 struct cfg80211_bss *res)
2865 hdr = nl80211hdr_put(msg, pid, seq, flags,
2866 NL80211_CMD_NEW_SCAN_RESULTS);
2870 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION,
2871 rdev->bss_generation);
2872 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2874 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
2876 goto nla_put_failure;
2877 if (!is_zero_ether_addr(res->bssid))
2878 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
2879 if (res->information_elements && res->len_information_elements)
2880 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
2881 res->len_information_elements,
2882 res->information_elements);
2884 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
2885 if (res->beacon_interval)
2886 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
2887 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
2888 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
2890 switch (rdev->wiphy.signal_type) {
2891 case CFG80211_SIGNAL_TYPE_MBM:
2892 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
2894 case CFG80211_SIGNAL_TYPE_UNSPEC:
2895 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
2901 nla_nest_end(msg, bss);
2903 return genlmsg_end(msg, hdr);
2906 genlmsg_cancel(msg, hdr);
2910 static int nl80211_dump_scan(struct sk_buff *skb,
2911 struct netlink_callback *cb)
2913 struct cfg80211_registered_device *dev;
2914 struct net_device *netdev;
2915 struct cfg80211_internal_bss *scan;
2916 int ifidx = cb->args[0];
2917 int start = cb->args[1], idx = 0;
2921 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
2922 nl80211_fam.attrbuf, nl80211_fam.maxattr,
2927 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
2930 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
2933 cb->args[0] = ifidx;
2936 netdev = dev_get_by_index(&init_net, ifidx);
2940 dev = cfg80211_get_dev_from_ifindex(ifidx);
2943 goto out_put_netdev;
2946 spin_lock_bh(&dev->bss_lock);
2947 cfg80211_bss_expire(dev);
2949 list_for_each_entry(scan, &dev->bss_list, list) {
2952 if (nl80211_send_bss(skb,
2953 NETLINK_CB(cb->skb).pid,
2954 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2955 dev, netdev, &scan->pub) < 0) {
2962 spin_unlock_bh(&dev->bss_lock);
2966 cfg80211_put_dev(dev);
2973 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
2975 return auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM ||
2976 auth_type == NL80211_AUTHTYPE_SHARED_KEY ||
2977 auth_type == NL80211_AUTHTYPE_FT ||
2978 auth_type == NL80211_AUTHTYPE_NETWORK_EAP;
2981 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
2983 struct cfg80211_registered_device *drv;
2984 struct net_device *dev;
2985 struct cfg80211_auth_request req;
2986 struct wiphy *wiphy;
2989 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2992 if (!info->attrs[NL80211_ATTR_MAC])
2995 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3000 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3004 if (!drv->ops->auth) {
3009 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3014 if (!netif_running(dev)) {
3019 wiphy = &drv->wiphy;
3020 memset(&req, 0, sizeof(req));
3022 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3024 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3025 req.chan = ieee80211_get_channel(
3027 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3034 if (info->attrs[NL80211_ATTR_SSID]) {
3035 req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3036 req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3039 if (info->attrs[NL80211_ATTR_IE]) {
3040 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3041 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3044 req.auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3045 if (!nl80211_valid_auth_type(req.auth_type)) {
3050 err = drv->ops->auth(&drv->wiphy, dev, &req);
3053 cfg80211_put_dev(drv);
3060 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
3062 struct cfg80211_registered_device *drv;
3063 struct net_device *dev;
3064 struct cfg80211_assoc_request req;
3065 struct wiphy *wiphy;
3068 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3071 if (!info->attrs[NL80211_ATTR_MAC] ||
3072 !info->attrs[NL80211_ATTR_SSID])
3077 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3081 if (!drv->ops->assoc) {
3086 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3091 if (!netif_running(dev)) {
3096 wiphy = &drv->wiphy;
3097 memset(&req, 0, sizeof(req));
3099 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3101 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3102 req.chan = ieee80211_get_channel(
3104 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3111 req.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3112 req.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3114 if (info->attrs[NL80211_ATTR_IE]) {
3115 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3116 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3119 if (info->attrs[NL80211_ATTR_USE_MFP]) {
3120 enum nl80211_mfp use_mfp =
3121 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
3122 if (use_mfp == NL80211_MFP_REQUIRED)
3124 else if (use_mfp != NL80211_MFP_NO) {
3130 req.control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3132 err = drv->ops->assoc(&drv->wiphy, dev, &req);
3135 cfg80211_put_dev(drv);
3142 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3144 struct cfg80211_registered_device *drv;
3145 struct net_device *dev;
3146 struct cfg80211_deauth_request req;
3147 struct wiphy *wiphy;
3150 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3153 if (!info->attrs[NL80211_ATTR_MAC])
3156 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3161 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3165 if (!drv->ops->deauth) {
3170 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3175 if (!netif_running(dev)) {
3180 wiphy = &drv->wiphy;
3181 memset(&req, 0, sizeof(req));
3183 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3185 req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3186 if (req.reason_code == 0) {
3187 /* Reason Code 0 is reserved */
3192 if (info->attrs[NL80211_ATTR_IE]) {
3193 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3194 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3197 err = drv->ops->deauth(&drv->wiphy, dev, &req);
3200 cfg80211_put_dev(drv);
3207 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3209 struct cfg80211_registered_device *drv;
3210 struct net_device *dev;
3211 struct cfg80211_disassoc_request req;
3212 struct wiphy *wiphy;
3215 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3218 if (!info->attrs[NL80211_ATTR_MAC])
3221 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3226 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3230 if (!drv->ops->disassoc) {
3235 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3240 if (!netif_running(dev)) {
3245 wiphy = &drv->wiphy;
3246 memset(&req, 0, sizeof(req));
3248 req.peer_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3250 req.reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3251 if (req.reason_code == 0) {
3252 /* Reason Code 0 is reserved */
3257 if (info->attrs[NL80211_ATTR_IE]) {
3258 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3259 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3262 err = drv->ops->disassoc(&drv->wiphy, dev, &req);
3265 cfg80211_put_dev(drv);
3272 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3274 struct cfg80211_registered_device *drv;
3275 struct net_device *dev;
3276 struct cfg80211_ibss_params ibss;
3277 struct wiphy *wiphy;
3280 memset(&ibss, 0, sizeof(ibss));
3282 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3285 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3286 !info->attrs[NL80211_ATTR_SSID] ||
3287 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3290 ibss.beacon_interval = 100;
3292 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3293 ibss.beacon_interval =
3294 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3295 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3301 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3305 if (!drv->ops->join_ibss) {
3310 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3315 if (!netif_running(dev)) {
3320 wiphy = &drv->wiphy;
3322 if (info->attrs[NL80211_ATTR_MAC])
3323 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3324 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3325 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3327 if (info->attrs[NL80211_ATTR_IE]) {
3328 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3329 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3332 ibss.channel = ieee80211_get_channel(wiphy,
3333 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3334 if (!ibss.channel ||
3335 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
3336 ibss.channel->flags & IEEE80211_CHAN_DISABLED) {
3341 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
3343 err = cfg80211_join_ibss(drv, dev, &ibss);
3346 cfg80211_put_dev(drv);
3353 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3355 struct cfg80211_registered_device *drv;
3356 struct net_device *dev;
3361 err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
3365 if (!drv->ops->leave_ibss) {
3370 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3375 if (!netif_running(dev)) {
3380 err = cfg80211_leave_ibss(drv, dev, false);
3383 cfg80211_put_dev(drv);
3390 static struct genl_ops nl80211_ops[] = {
3392 .cmd = NL80211_CMD_GET_WIPHY,
3393 .doit = nl80211_get_wiphy,
3394 .dumpit = nl80211_dump_wiphy,
3395 .policy = nl80211_policy,
3396 /* can be retrieved by unprivileged users */
3399 .cmd = NL80211_CMD_SET_WIPHY,
3400 .doit = nl80211_set_wiphy,
3401 .policy = nl80211_policy,
3402 .flags = GENL_ADMIN_PERM,
3405 .cmd = NL80211_CMD_GET_INTERFACE,
3406 .doit = nl80211_get_interface,
3407 .dumpit = nl80211_dump_interface,
3408 .policy = nl80211_policy,
3409 /* can be retrieved by unprivileged users */
3412 .cmd = NL80211_CMD_SET_INTERFACE,
3413 .doit = nl80211_set_interface,
3414 .policy = nl80211_policy,
3415 .flags = GENL_ADMIN_PERM,
3418 .cmd = NL80211_CMD_NEW_INTERFACE,
3419 .doit = nl80211_new_interface,
3420 .policy = nl80211_policy,
3421 .flags = GENL_ADMIN_PERM,
3424 .cmd = NL80211_CMD_DEL_INTERFACE,
3425 .doit = nl80211_del_interface,
3426 .policy = nl80211_policy,
3427 .flags = GENL_ADMIN_PERM,
3430 .cmd = NL80211_CMD_GET_KEY,
3431 .doit = nl80211_get_key,
3432 .policy = nl80211_policy,
3433 .flags = GENL_ADMIN_PERM,
3436 .cmd = NL80211_CMD_SET_KEY,
3437 .doit = nl80211_set_key,
3438 .policy = nl80211_policy,
3439 .flags = GENL_ADMIN_PERM,
3442 .cmd = NL80211_CMD_NEW_KEY,
3443 .doit = nl80211_new_key,
3444 .policy = nl80211_policy,
3445 .flags = GENL_ADMIN_PERM,
3448 .cmd = NL80211_CMD_DEL_KEY,
3449 .doit = nl80211_del_key,
3450 .policy = nl80211_policy,
3451 .flags = GENL_ADMIN_PERM,
3454 .cmd = NL80211_CMD_SET_BEACON,
3455 .policy = nl80211_policy,
3456 .flags = GENL_ADMIN_PERM,
3457 .doit = nl80211_addset_beacon,
3460 .cmd = NL80211_CMD_NEW_BEACON,
3461 .policy = nl80211_policy,
3462 .flags = GENL_ADMIN_PERM,
3463 .doit = nl80211_addset_beacon,
3466 .cmd = NL80211_CMD_DEL_BEACON,
3467 .policy = nl80211_policy,
3468 .flags = GENL_ADMIN_PERM,
3469 .doit = nl80211_del_beacon,
3472 .cmd = NL80211_CMD_GET_STATION,
3473 .doit = nl80211_get_station,
3474 .dumpit = nl80211_dump_station,
3475 .policy = nl80211_policy,
3478 .cmd = NL80211_CMD_SET_STATION,
3479 .doit = nl80211_set_station,
3480 .policy = nl80211_policy,
3481 .flags = GENL_ADMIN_PERM,
3484 .cmd = NL80211_CMD_NEW_STATION,
3485 .doit = nl80211_new_station,
3486 .policy = nl80211_policy,
3487 .flags = GENL_ADMIN_PERM,
3490 .cmd = NL80211_CMD_DEL_STATION,
3491 .doit = nl80211_del_station,
3492 .policy = nl80211_policy,
3493 .flags = GENL_ADMIN_PERM,
3496 .cmd = NL80211_CMD_GET_MPATH,
3497 .doit = nl80211_get_mpath,
3498 .dumpit = nl80211_dump_mpath,
3499 .policy = nl80211_policy,
3500 .flags = GENL_ADMIN_PERM,
3503 .cmd = NL80211_CMD_SET_MPATH,
3504 .doit = nl80211_set_mpath,
3505 .policy = nl80211_policy,
3506 .flags = GENL_ADMIN_PERM,
3509 .cmd = NL80211_CMD_NEW_MPATH,
3510 .doit = nl80211_new_mpath,
3511 .policy = nl80211_policy,
3512 .flags = GENL_ADMIN_PERM,
3515 .cmd = NL80211_CMD_DEL_MPATH,
3516 .doit = nl80211_del_mpath,
3517 .policy = nl80211_policy,
3518 .flags = GENL_ADMIN_PERM,
3521 .cmd = NL80211_CMD_SET_BSS,
3522 .doit = nl80211_set_bss,
3523 .policy = nl80211_policy,
3524 .flags = GENL_ADMIN_PERM,
3527 .cmd = NL80211_CMD_GET_REG,
3528 .doit = nl80211_get_reg,
3529 .policy = nl80211_policy,
3530 /* can be retrieved by unprivileged users */
3533 .cmd = NL80211_CMD_SET_REG,
3534 .doit = nl80211_set_reg,
3535 .policy = nl80211_policy,
3536 .flags = GENL_ADMIN_PERM,
3539 .cmd = NL80211_CMD_REQ_SET_REG,
3540 .doit = nl80211_req_set_reg,
3541 .policy = nl80211_policy,
3542 .flags = GENL_ADMIN_PERM,
3545 .cmd = NL80211_CMD_GET_MESH_PARAMS,
3546 .doit = nl80211_get_mesh_params,
3547 .policy = nl80211_policy,
3548 /* can be retrieved by unprivileged users */
3551 .cmd = NL80211_CMD_SET_MESH_PARAMS,
3552 .doit = nl80211_set_mesh_params,
3553 .policy = nl80211_policy,
3554 .flags = GENL_ADMIN_PERM,
3557 .cmd = NL80211_CMD_TRIGGER_SCAN,
3558 .doit = nl80211_trigger_scan,
3559 .policy = nl80211_policy,
3560 .flags = GENL_ADMIN_PERM,
3563 .cmd = NL80211_CMD_GET_SCAN,
3564 .policy = nl80211_policy,
3565 .dumpit = nl80211_dump_scan,
3568 .cmd = NL80211_CMD_AUTHENTICATE,
3569 .doit = nl80211_authenticate,
3570 .policy = nl80211_policy,
3571 .flags = GENL_ADMIN_PERM,
3574 .cmd = NL80211_CMD_ASSOCIATE,
3575 .doit = nl80211_associate,
3576 .policy = nl80211_policy,
3577 .flags = GENL_ADMIN_PERM,
3580 .cmd = NL80211_CMD_DEAUTHENTICATE,
3581 .doit = nl80211_deauthenticate,
3582 .policy = nl80211_policy,
3583 .flags = GENL_ADMIN_PERM,
3586 .cmd = NL80211_CMD_DISASSOCIATE,
3587 .doit = nl80211_disassociate,
3588 .policy = nl80211_policy,
3589 .flags = GENL_ADMIN_PERM,
3592 .cmd = NL80211_CMD_JOIN_IBSS,
3593 .doit = nl80211_join_ibss,
3594 .policy = nl80211_policy,
3595 .flags = GENL_ADMIN_PERM,
3598 .cmd = NL80211_CMD_LEAVE_IBSS,
3599 .doit = nl80211_leave_ibss,
3600 .policy = nl80211_policy,
3601 .flags = GENL_ADMIN_PERM,
3604 static struct genl_multicast_group nl80211_mlme_mcgrp = {
3608 /* multicast groups */
3609 static struct genl_multicast_group nl80211_config_mcgrp = {
3612 static struct genl_multicast_group nl80211_scan_mcgrp = {
3615 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
3616 .name = "regulatory",
3619 /* notification functions */
3621 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
3623 struct sk_buff *msg;
3625 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3629 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
3634 genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL);
3637 static int nl80211_add_scan_req(struct sk_buff *msg,
3638 struct cfg80211_registered_device *rdev)
3640 struct cfg80211_scan_request *req = rdev->scan_req;
3641 struct nlattr *nest;
3647 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
3649 goto nla_put_failure;
3650 for (i = 0; i < req->n_ssids; i++)
3651 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
3652 nla_nest_end(msg, nest);
3654 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
3656 goto nla_put_failure;
3657 for (i = 0; i < req->n_channels; i++)
3658 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
3659 nla_nest_end(msg, nest);
3662 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
3669 static int nl80211_send_scan_donemsg(struct sk_buff *msg,
3670 struct cfg80211_registered_device *rdev,
3671 struct net_device *netdev,
3672 u32 pid, u32 seq, int flags,
3677 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
3681 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3682 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3684 /* ignore errors and send incomplete event anyway */
3685 nl80211_add_scan_req(msg, rdev);
3687 return genlmsg_end(msg, hdr);
3690 genlmsg_cancel(msg, hdr);
3694 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
3695 struct net_device *netdev)
3697 struct sk_buff *msg;
3699 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3703 if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0,
3704 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
3709 genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
3712 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
3713 struct net_device *netdev)
3715 struct sk_buff *msg;
3717 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3721 if (nl80211_send_scan_donemsg(msg, rdev, netdev, 0, 0, 0,
3722 NL80211_CMD_SCAN_ABORTED) < 0) {
3727 genlmsg_multicast(msg, 0, nl80211_scan_mcgrp.id, GFP_KERNEL);
3731 * This can happen on global regulatory changes or device specific settings
3732 * based on custom world regulatory domains.
3734 void nl80211_send_reg_change_event(struct regulatory_request *request)
3736 struct sk_buff *msg;
3739 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3743 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
3749 /* Userspace can always count this one always being set */
3750 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
3752 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
3753 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3754 NL80211_REGDOM_TYPE_WORLD);
3755 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
3756 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3757 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
3758 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
3760 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3761 NL80211_REGDOM_TYPE_INTERSECTION);
3763 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
3764 NL80211_REGDOM_TYPE_COUNTRY);
3765 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
3768 if (wiphy_idx_valid(request->wiphy_idx))
3769 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
3771 if (genlmsg_end(msg, hdr) < 0) {
3776 genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_KERNEL);
3781 genlmsg_cancel(msg, hdr);
3785 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
3786 struct net_device *netdev,
3787 const u8 *buf, size_t len,
3788 enum nl80211_commands cmd)
3790 struct sk_buff *msg;
3793 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3797 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
3803 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3804 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3805 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
3807 if (genlmsg_end(msg, hdr) < 0) {
3812 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
3816 genlmsg_cancel(msg, hdr);
3820 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
3821 struct net_device *netdev, const u8 *buf, size_t len)
3823 nl80211_send_mlme_event(rdev, netdev, buf, len,
3824 NL80211_CMD_AUTHENTICATE);
3827 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
3828 struct net_device *netdev, const u8 *buf,
3831 nl80211_send_mlme_event(rdev, netdev, buf, len, NL80211_CMD_ASSOCIATE);
3834 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
3835 struct net_device *netdev, const u8 *buf, size_t len)
3837 nl80211_send_mlme_event(rdev, netdev, buf, len,
3838 NL80211_CMD_DEAUTHENTICATE);
3841 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
3842 struct net_device *netdev, const u8 *buf,
3845 nl80211_send_mlme_event(rdev, netdev, buf, len,
3846 NL80211_CMD_DISASSOCIATE);
3849 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
3850 struct net_device *netdev, int cmd,
3853 struct sk_buff *msg;
3856 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3860 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
3866 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3867 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3868 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
3869 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3871 if (genlmsg_end(msg, hdr) < 0) {
3876 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
3880 genlmsg_cancel(msg, hdr);
3884 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
3885 struct net_device *netdev, const u8 *addr)
3887 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
3891 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
3892 struct net_device *netdev, const u8 *addr)
3894 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, addr);
3897 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
3898 struct net_device *netdev, const u8 *bssid,
3901 struct sk_buff *msg;
3904 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
3908 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
3914 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3915 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3916 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
3918 if (genlmsg_end(msg, hdr) < 0) {
3923 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
3927 genlmsg_cancel(msg, hdr);
3931 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
3932 struct net_device *netdev, const u8 *addr,
3933 enum nl80211_key_type key_type, int key_id,
3936 struct sk_buff *msg;
3939 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3943 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
3949 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3950 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
3952 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3953 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
3954 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
3956 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
3958 if (genlmsg_end(msg, hdr) < 0) {
3963 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_ATOMIC);
3967 genlmsg_cancel(msg, hdr);
3971 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
3972 struct ieee80211_channel *channel_before,
3973 struct ieee80211_channel *channel_after)
3975 struct sk_buff *msg;
3977 struct nlattr *nl_freq;
3979 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3983 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
3990 * Since we are applying the beacon hint to a wiphy we know its
3991 * wiphy_idx is valid
3993 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
3996 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
3998 goto nla_put_failure;
3999 if (nl80211_msg_put_channel(msg, channel_before))
4000 goto nla_put_failure;
4001 nla_nest_end(msg, nl_freq);
4004 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
4006 goto nla_put_failure;
4007 if (nl80211_msg_put_channel(msg, channel_after))
4008 goto nla_put_failure;
4009 nla_nest_end(msg, nl_freq);
4011 if (genlmsg_end(msg, hdr) < 0) {
4016 genlmsg_multicast(msg, 0, nl80211_regulatory_mcgrp.id, GFP_ATOMIC);
4021 genlmsg_cancel(msg, hdr);
4025 /* initialisation/exit functions */
4027 int nl80211_init(void)
4031 err = genl_register_family_with_ops(&nl80211_fam,
4032 nl80211_ops, ARRAY_SIZE(nl80211_ops));
4036 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
4040 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
4044 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
4048 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
4054 genl_unregister_family(&nl80211_fam);
4058 void nl80211_exit(void)
4060 genl_unregister_family(&nl80211_fam);