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/net_namespace.h>
18 #include <net/genetlink.h>
19 #include <net/cfg80211.h>
25 /* the netlink family */
26 static struct genl_family nl80211_fam = {
27 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
28 .name = "nl80211", /* have users key off the name instead */
29 .hdrsize = 0, /* no private header */
30 .version = 1, /* no particular meaning now */
31 .maxattr = NL80211_ATTR_MAX,
35 /* internal helper: get rdev and dev */
36 static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
37 struct cfg80211_registered_device **rdev,
38 struct net_device **dev)
40 struct nlattr **attrs = info->attrs;
43 if (!attrs[NL80211_ATTR_IFINDEX])
46 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
47 *dev = dev_get_by_index(genl_info_net(info), ifindex);
51 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
54 return PTR_ERR(*rdev);
60 /* policy for the attributes */
61 static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
62 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
63 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
65 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
66 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
67 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
68 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
69 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
70 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
71 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
73 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
74 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
75 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
77 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
78 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
80 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
81 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
82 .len = WLAN_MAX_KEY_LEN },
83 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
84 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
85 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
86 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
88 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
89 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
90 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
91 .len = IEEE80211_MAX_DATA_LEN },
92 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
93 .len = IEEE80211_MAX_DATA_LEN },
94 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
95 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
96 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
97 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
98 .len = NL80211_MAX_SUPP_RATES },
99 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
100 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
101 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
102 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
103 .len = IEEE80211_MAX_MESH_ID_LEN },
104 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
106 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
107 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
109 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
110 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
111 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
112 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
113 .len = NL80211_MAX_SUPP_RATES },
115 [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
117 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
118 .len = NL80211_HT_CAPABILITY_LEN },
120 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
121 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
122 .len = IEEE80211_MAX_DATA_LEN },
123 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
124 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
126 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
127 .len = IEEE80211_MAX_SSID_LEN },
128 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
129 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
130 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
131 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
132 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
133 [NL80211_ATTR_STA_FLAGS2] = {
134 .len = sizeof(struct nl80211_sta_flag_update),
136 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
137 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
138 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
139 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
140 [NL80211_ATTR_PID] = { .type = NLA_U32 },
143 /* policy for the attributes */
144 static struct nla_policy
145 nl80211_key_policy[NL80211_KEY_MAX + 1] __read_mostly = {
146 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
147 [NL80211_KEY_IDX] = { .type = NLA_U8 },
148 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
149 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
150 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
151 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
155 static bool is_valid_ie_attr(const struct nlattr *attr)
163 pos = nla_data(attr);
184 /* message building helper */
185 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
188 /* since there is no private header just add the generic one */
189 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
192 static int nl80211_msg_put_channel(struct sk_buff *msg,
193 struct ieee80211_channel *chan)
195 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
198 if (chan->flags & IEEE80211_CHAN_DISABLED)
199 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
200 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
201 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
202 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
203 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
204 if (chan->flags & IEEE80211_CHAN_RADAR)
205 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
207 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
208 DBM_TO_MBM(chan->max_power));
216 /* netlink command implementations */
224 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
226 struct nlattr *tb[NL80211_KEY_MAX + 1];
227 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
232 k->def = !!tb[NL80211_KEY_DEFAULT];
233 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
235 if (tb[NL80211_KEY_IDX])
236 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
238 if (tb[NL80211_KEY_DATA]) {
239 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
240 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
243 if (tb[NL80211_KEY_SEQ]) {
244 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
245 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
248 if (tb[NL80211_KEY_CIPHER])
249 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
254 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
256 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
257 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
258 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
261 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
262 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
263 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
266 if (info->attrs[NL80211_ATTR_KEY_IDX])
267 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
269 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
270 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
272 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
273 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
278 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
282 memset(k, 0, sizeof(*k));
285 if (info->attrs[NL80211_ATTR_KEY])
286 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
288 err = nl80211_parse_key_old(info, k);
293 if (k->def && k->defmgmt)
298 if (k->idx < 4 || k->idx > 5)
301 if (k->idx < 0 || k->idx > 3)
304 if (k->idx < 0 || k->idx > 5)
312 static struct cfg80211_cached_keys *
313 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
316 struct key_parse parse;
318 struct cfg80211_cached_keys *result;
319 int rem, err, def = 0;
321 result = kzalloc(sizeof(*result), GFP_KERNEL);
323 return ERR_PTR(-ENOMEM);
326 result->defmgmt = -1;
328 nla_for_each_nested(key, keys, rem) {
329 memset(&parse, 0, sizeof(parse));
332 err = nl80211_parse_key_new(key, &parse);
338 if (parse.idx < 0 || parse.idx > 4)
344 result->def = parse.idx;
345 } else if (parse.defmgmt)
347 err = cfg80211_validate_key_settings(rdev, &parse.p,
351 result->params[parse.idx].cipher = parse.p.cipher;
352 result->params[parse.idx].key_len = parse.p.key_len;
353 result->params[parse.idx].key = result->data[parse.idx];
354 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
363 static int nl80211_key_allowed(struct wireless_dev *wdev)
365 ASSERT_WDEV_LOCK(wdev);
367 if (!netif_running(wdev->netdev))
370 switch (wdev->iftype) {
371 case NL80211_IFTYPE_AP:
372 case NL80211_IFTYPE_AP_VLAN:
374 case NL80211_IFTYPE_ADHOC:
375 if (!wdev->current_bss)
378 case NL80211_IFTYPE_STATION:
379 if (wdev->sme_state != CFG80211_SME_CONNECTED)
389 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
390 struct cfg80211_registered_device *dev)
393 struct nlattr *nl_bands, *nl_band;
394 struct nlattr *nl_freqs, *nl_freq;
395 struct nlattr *nl_rates, *nl_rate;
396 struct nlattr *nl_modes;
397 struct nlattr *nl_cmds;
398 enum ieee80211_band band;
399 struct ieee80211_channel *chan;
400 struct ieee80211_rate *rate;
402 u16 ifmodes = dev->wiphy.interface_modes;
404 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
408 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
409 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
411 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
412 dev->wiphy.retry_short);
413 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
414 dev->wiphy.retry_long);
415 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
416 dev->wiphy.frag_threshold);
417 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
418 dev->wiphy.rts_threshold);
420 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
421 dev->wiphy.max_scan_ssids);
422 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
423 dev->wiphy.max_scan_ie_len);
425 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
426 sizeof(u32) * dev->wiphy.n_cipher_suites,
427 dev->wiphy.cipher_suites);
429 nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
431 goto nla_put_failure;
436 NLA_PUT_FLAG(msg, i);
441 nla_nest_end(msg, nl_modes);
443 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
445 goto nla_put_failure;
447 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
448 if (!dev->wiphy.bands[band])
451 nl_band = nla_nest_start(msg, band);
453 goto nla_put_failure;
456 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
457 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
458 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
459 &dev->wiphy.bands[band]->ht_cap.mcs);
460 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
461 dev->wiphy.bands[band]->ht_cap.cap);
462 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
463 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
464 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
465 dev->wiphy.bands[band]->ht_cap.ampdu_density);
468 /* add frequencies */
469 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
471 goto nla_put_failure;
473 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
474 nl_freq = nla_nest_start(msg, i);
476 goto nla_put_failure;
478 chan = &dev->wiphy.bands[band]->channels[i];
480 if (nl80211_msg_put_channel(msg, chan))
481 goto nla_put_failure;
483 nla_nest_end(msg, nl_freq);
486 nla_nest_end(msg, nl_freqs);
489 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
491 goto nla_put_failure;
493 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
494 nl_rate = nla_nest_start(msg, i);
496 goto nla_put_failure;
498 rate = &dev->wiphy.bands[band]->bitrates[i];
499 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
501 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
503 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
505 nla_nest_end(msg, nl_rate);
508 nla_nest_end(msg, nl_rates);
510 nla_nest_end(msg, nl_band);
512 nla_nest_end(msg, nl_bands);
514 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
516 goto nla_put_failure;
521 if (dev->ops->op) { \
523 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
527 CMD(add_virtual_intf, NEW_INTERFACE);
528 CMD(change_virtual_intf, SET_INTERFACE);
529 CMD(add_key, NEW_KEY);
530 CMD(add_beacon, NEW_BEACON);
531 CMD(add_station, NEW_STATION);
532 CMD(add_mpath, NEW_MPATH);
533 CMD(set_mesh_params, SET_MESH_PARAMS);
534 CMD(change_bss, SET_BSS);
535 CMD(auth, AUTHENTICATE);
536 CMD(assoc, ASSOCIATE);
537 CMD(deauth, DEAUTHENTICATE);
538 CMD(disassoc, DISASSOCIATE);
539 CMD(join_ibss, JOIN_IBSS);
540 if (dev->wiphy.netnsok) {
542 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
547 if (dev->ops->connect || dev->ops->auth) {
549 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
552 if (dev->ops->disconnect || dev->ops->deauth) {
554 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
557 nla_nest_end(msg, nl_cmds);
559 return genlmsg_end(msg, hdr);
562 genlmsg_cancel(msg, hdr);
566 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
569 int start = cb->args[0];
570 struct cfg80211_registered_device *dev;
572 mutex_lock(&cfg80211_mutex);
573 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
574 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
578 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
579 cb->nlh->nlmsg_seq, NLM_F_MULTI,
585 mutex_unlock(&cfg80211_mutex);
592 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
595 struct cfg80211_registered_device *dev;
597 dev = cfg80211_get_dev_from_info(info);
601 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
605 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
608 cfg80211_unlock_rdev(dev);
610 return genlmsg_reply(msg, info);
615 cfg80211_unlock_rdev(dev);
619 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
620 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
621 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
622 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
623 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
624 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
627 static int parse_txq_params(struct nlattr *tb[],
628 struct ieee80211_txq_params *txq_params)
630 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
631 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
632 !tb[NL80211_TXQ_ATTR_AIFS])
635 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
636 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
637 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
638 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
639 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
644 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
646 struct cfg80211_registered_device *rdev;
647 int result = 0, rem_txq_params = 0;
648 struct nlattr *nl_txq_params;
650 u8 retry_short = 0, retry_long = 0;
651 u32 frag_threshold = 0, rts_threshold = 0;
655 mutex_lock(&cfg80211_mutex);
657 rdev = __cfg80211_rdev_from_info(info);
659 mutex_unlock(&cfg80211_mutex);
660 result = PTR_ERR(rdev);
664 mutex_lock(&rdev->mtx);
666 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
667 result = cfg80211_dev_rename(
668 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
670 mutex_unlock(&cfg80211_mutex);
675 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
676 struct ieee80211_txq_params txq_params;
677 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
679 if (!rdev->ops->set_txq_params) {
680 result = -EOPNOTSUPP;
684 nla_for_each_nested(nl_txq_params,
685 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
687 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
688 nla_data(nl_txq_params),
689 nla_len(nl_txq_params),
691 result = parse_txq_params(tb, &txq_params);
695 result = rdev->ops->set_txq_params(&rdev->wiphy,
702 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
703 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
704 struct ieee80211_channel *chan;
705 struct ieee80211_sta_ht_cap *ht_cap;
708 if (!rdev->ops->set_channel) {
709 result = -EOPNOTSUPP;
715 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
716 channel_type = nla_get_u32(info->attrs[
717 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
718 if (channel_type != NL80211_CHAN_NO_HT &&
719 channel_type != NL80211_CHAN_HT20 &&
720 channel_type != NL80211_CHAN_HT40PLUS &&
721 channel_type != NL80211_CHAN_HT40MINUS)
725 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
726 chan = ieee80211_get_channel(&rdev->wiphy, freq);
728 /* Primary channel not allowed */
729 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
732 if (channel_type == NL80211_CHAN_HT40MINUS &&
733 (chan->flags & IEEE80211_CHAN_NO_HT40MINUS))
735 else if (channel_type == NL80211_CHAN_HT40PLUS &&
736 (chan->flags & IEEE80211_CHAN_NO_HT40PLUS))
740 * At this point we know if that if HT40 was requested
741 * we are allowed to use it and the extension channel
745 ht_cap = &rdev->wiphy.bands[chan->band]->ht_cap;
747 /* no HT capabilities or intolerant */
748 if (channel_type != NL80211_CHAN_NO_HT) {
749 if (!ht_cap->ht_supported)
751 if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) ||
752 (ht_cap->cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT))
756 result = rdev->ops->set_channel(&rdev->wiphy, chan,
764 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
765 retry_short = nla_get_u8(
766 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
767 if (retry_short == 0) {
771 changed |= WIPHY_PARAM_RETRY_SHORT;
774 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
775 retry_long = nla_get_u8(
776 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
777 if (retry_long == 0) {
781 changed |= WIPHY_PARAM_RETRY_LONG;
784 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
785 frag_threshold = nla_get_u32(
786 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
787 if (frag_threshold < 256) {
791 if (frag_threshold != (u32) -1) {
793 * Fragments (apart from the last one) are required to
794 * have even length. Make the fragmentation code
795 * simpler by stripping LSB should someone try to use
796 * odd threshold value.
798 frag_threshold &= ~0x1;
800 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
803 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
804 rts_threshold = nla_get_u32(
805 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
806 changed |= WIPHY_PARAM_RTS_THRESHOLD;
810 u8 old_retry_short, old_retry_long;
811 u32 old_frag_threshold, old_rts_threshold;
813 if (!rdev->ops->set_wiphy_params) {
814 result = -EOPNOTSUPP;
818 old_retry_short = rdev->wiphy.retry_short;
819 old_retry_long = rdev->wiphy.retry_long;
820 old_frag_threshold = rdev->wiphy.frag_threshold;
821 old_rts_threshold = rdev->wiphy.rts_threshold;
823 if (changed & WIPHY_PARAM_RETRY_SHORT)
824 rdev->wiphy.retry_short = retry_short;
825 if (changed & WIPHY_PARAM_RETRY_LONG)
826 rdev->wiphy.retry_long = retry_long;
827 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
828 rdev->wiphy.frag_threshold = frag_threshold;
829 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
830 rdev->wiphy.rts_threshold = rts_threshold;
832 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
834 rdev->wiphy.retry_short = old_retry_short;
835 rdev->wiphy.retry_long = old_retry_long;
836 rdev->wiphy.frag_threshold = old_frag_threshold;
837 rdev->wiphy.rts_threshold = old_rts_threshold;
842 mutex_unlock(&rdev->mtx);
849 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
850 struct cfg80211_registered_device *rdev,
851 struct net_device *dev)
855 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
859 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
860 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
861 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
862 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
863 return genlmsg_end(msg, hdr);
866 genlmsg_cancel(msg, hdr);
870 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
874 int wp_start = cb->args[0];
875 int if_start = cb->args[1];
876 struct cfg80211_registered_device *dev;
877 struct wireless_dev *wdev;
879 mutex_lock(&cfg80211_mutex);
880 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
881 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
883 if (wp_idx < wp_start) {
889 mutex_lock(&dev->devlist_mtx);
890 list_for_each_entry(wdev, &dev->netdev_list, list) {
891 if (if_idx < if_start) {
895 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
896 cb->nlh->nlmsg_seq, NLM_F_MULTI,
897 dev, wdev->netdev) < 0) {
898 mutex_unlock(&dev->devlist_mtx);
903 mutex_unlock(&dev->devlist_mtx);
908 mutex_unlock(&cfg80211_mutex);
910 cb->args[0] = wp_idx;
911 cb->args[1] = if_idx;
916 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
919 struct cfg80211_registered_device *dev;
920 struct net_device *netdev;
923 err = get_rdev_dev_by_info_ifindex(info, &dev, &netdev);
927 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
931 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
936 cfg80211_unlock_rdev(dev);
938 return genlmsg_reply(msg, info);
944 cfg80211_unlock_rdev(dev);
948 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
949 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
950 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
951 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
952 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
953 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
956 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
958 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
966 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
967 nla, mntr_flags_policy))
970 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
972 *mntrflags |= (1<<flag);
977 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
979 struct cfg80211_registered_device *rdev;
980 struct vif_params params;
982 enum nl80211_iftype otype, ntype;
983 struct net_device *dev;
984 u32 _flags, *flags = NULL;
987 memset(¶ms, 0, sizeof(params));
991 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
995 otype = ntype = dev->ieee80211_ptr->iftype;
997 if (info->attrs[NL80211_ATTR_IFTYPE]) {
998 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1001 if (ntype > NL80211_IFTYPE_MAX) {
1007 if (!rdev->ops->change_virtual_intf ||
1008 !(rdev->wiphy.interface_modes & (1 << ntype))) {
1013 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1014 if (ntype != NL80211_IFTYPE_MESH_POINT) {
1018 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
1019 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1023 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1024 if (ntype != NL80211_IFTYPE_MONITOR) {
1028 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1038 err = rdev->ops->change_virtual_intf(&rdev->wiphy, dev,
1039 ntype, flags, ¶ms);
1043 WARN_ON(!err && dev->ieee80211_ptr->iftype != ntype);
1045 if (!err && (ntype != otype)) {
1046 if (otype == NL80211_IFTYPE_ADHOC)
1047 cfg80211_clear_ibss(dev, false);
1052 cfg80211_unlock_rdev(rdev);
1058 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1060 struct cfg80211_registered_device *rdev;
1061 struct vif_params params;
1063 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1066 memset(¶ms, 0, sizeof(params));
1068 if (!info->attrs[NL80211_ATTR_IFNAME])
1071 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1072 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1073 if (type > NL80211_IFTYPE_MAX)
1079 rdev = cfg80211_get_dev_from_info(info);
1081 err = PTR_ERR(rdev);
1085 if (!rdev->ops->add_virtual_intf ||
1086 !(rdev->wiphy.interface_modes & (1 << type))) {
1091 if (type == NL80211_IFTYPE_MESH_POINT &&
1092 info->attrs[NL80211_ATTR_MESH_ID]) {
1093 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
1094 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1097 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1098 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1100 err = rdev->ops->add_virtual_intf(&rdev->wiphy,
1101 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1102 type, err ? NULL : &flags, ¶ms);
1105 cfg80211_unlock_rdev(rdev);
1111 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1113 struct cfg80211_registered_device *rdev;
1115 struct net_device *dev;
1119 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1123 if (!rdev->ops->del_virtual_intf) {
1128 err = rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1131 cfg80211_unlock_rdev(rdev);
1138 struct get_key_cookie {
1139 struct sk_buff *msg;
1144 static void get_key_callback(void *c, struct key_params *params)
1147 struct get_key_cookie *cookie = c;
1150 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1151 params->key_len, params->key);
1154 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1155 params->seq_len, params->seq);
1158 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1161 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1163 goto nla_put_failure;
1166 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1167 params->key_len, params->key);
1170 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1171 params->seq_len, params->seq);
1174 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1177 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1179 nla_nest_end(cookie->msg, key);
1186 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1188 struct cfg80211_registered_device *rdev;
1190 struct net_device *dev;
1192 u8 *mac_addr = NULL;
1193 struct get_key_cookie cookie = {
1197 struct sk_buff *msg;
1199 if (info->attrs[NL80211_ATTR_KEY_IDX])
1200 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1205 if (info->attrs[NL80211_ATTR_MAC])
1206 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1210 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1214 if (!rdev->ops->get_key) {
1219 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1225 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1226 NL80211_CMD_NEW_KEY);
1234 cookie.idx = key_idx;
1236 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1237 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1239 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1241 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, mac_addr,
1242 &cookie, get_key_callback);
1248 goto nla_put_failure;
1250 genlmsg_end(msg, hdr);
1251 err = genlmsg_reply(msg, info);
1259 cfg80211_unlock_rdev(rdev);
1267 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1269 struct cfg80211_registered_device *rdev;
1270 struct key_parse key;
1272 struct net_device *dev;
1273 int (*func)(struct wiphy *wiphy, struct net_device *netdev,
1276 err = nl80211_parse_key(info, &key);
1283 /* only support setting default key */
1284 if (!key.def && !key.defmgmt)
1289 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1294 func = rdev->ops->set_default_key;
1296 func = rdev->ops->set_default_mgmt_key;
1303 wdev_lock(dev->ieee80211_ptr);
1304 err = nl80211_key_allowed(dev->ieee80211_ptr);
1306 err = func(&rdev->wiphy, dev, key.idx);
1308 #ifdef CONFIG_WIRELESS_EXT
1310 if (func == rdev->ops->set_default_key)
1311 dev->ieee80211_ptr->wext.default_key = key.idx;
1313 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1316 wdev_unlock(dev->ieee80211_ptr);
1319 cfg80211_unlock_rdev(rdev);
1328 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1330 struct cfg80211_registered_device *rdev;
1332 struct net_device *dev;
1333 struct key_parse key;
1334 u8 *mac_addr = NULL;
1336 err = nl80211_parse_key(info, &key);
1343 if (info->attrs[NL80211_ATTR_MAC])
1344 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1348 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1352 if (!rdev->ops->add_key) {
1357 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, mac_addr)) {
1362 wdev_lock(dev->ieee80211_ptr);
1363 err = nl80211_key_allowed(dev->ieee80211_ptr);
1365 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1367 wdev_unlock(dev->ieee80211_ptr);
1370 cfg80211_unlock_rdev(rdev);
1378 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1380 struct cfg80211_registered_device *rdev;
1382 struct net_device *dev;
1383 u8 *mac_addr = NULL;
1384 struct key_parse key;
1386 err = nl80211_parse_key(info, &key);
1390 if (info->attrs[NL80211_ATTR_MAC])
1391 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1395 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1399 if (!rdev->ops->del_key) {
1404 wdev_lock(dev->ieee80211_ptr);
1405 err = nl80211_key_allowed(dev->ieee80211_ptr);
1407 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx, mac_addr);
1409 #ifdef CONFIG_WIRELESS_EXT
1411 if (key.idx == dev->ieee80211_ptr->wext.default_key)
1412 dev->ieee80211_ptr->wext.default_key = -1;
1413 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1414 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1417 wdev_unlock(dev->ieee80211_ptr);
1420 cfg80211_unlock_rdev(rdev);
1429 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1431 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1432 struct beacon_parameters *info);
1433 struct cfg80211_registered_device *rdev;
1435 struct net_device *dev;
1436 struct beacon_parameters params;
1439 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1444 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1448 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1453 switch (info->genlhdr->cmd) {
1454 case NL80211_CMD_NEW_BEACON:
1455 /* these are required for NEW_BEACON */
1456 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1457 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1458 !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1463 call = rdev->ops->add_beacon;
1465 case NL80211_CMD_SET_BEACON:
1466 call = rdev->ops->set_beacon;
1479 memset(¶ms, 0, sizeof(params));
1481 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
1483 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1487 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
1488 params.dtim_period =
1489 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1493 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1494 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1496 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1500 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1501 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1503 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1512 err = call(&rdev->wiphy, dev, ¶ms);
1515 cfg80211_unlock_rdev(rdev);
1523 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1525 struct cfg80211_registered_device *rdev;
1527 struct net_device *dev;
1531 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1535 if (!rdev->ops->del_beacon) {
1540 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1544 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
1547 cfg80211_unlock_rdev(rdev);
1555 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
1556 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
1557 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
1558 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
1559 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
1562 static int parse_station_flags(struct genl_info *info,
1563 struct station_parameters *params)
1565 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
1570 * Try parsing the new attribute first so userspace
1571 * can specify both for older kernels.
1573 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
1575 struct nl80211_sta_flag_update *sta_flags;
1577 sta_flags = nla_data(nla);
1578 params->sta_flags_mask = sta_flags->mask;
1579 params->sta_flags_set = sta_flags->set;
1580 if ((params->sta_flags_mask |
1581 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
1586 /* if present, parse the old attribute */
1588 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
1592 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1593 nla, sta_flags_policy))
1596 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
1597 params->sta_flags_mask &= ~1;
1599 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1601 params->sta_flags_set |= (1<<flag);
1606 static u16 nl80211_calculate_bitrate(struct rate_info *rate)
1608 int modulation, streams, bitrate;
1610 if (!(rate->flags & RATE_INFO_FLAGS_MCS))
1611 return rate->legacy;
1613 /* the formula below does only work for MCS values smaller than 32 */
1614 if (rate->mcs >= 32)
1617 modulation = rate->mcs & 7;
1618 streams = (rate->mcs >> 3) + 1;
1620 bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ?
1624 bitrate *= (modulation + 1);
1625 else if (modulation == 4)
1626 bitrate *= (modulation + 2);
1628 bitrate *= (modulation + 3);
1632 if (rate->flags & RATE_INFO_FLAGS_SHORT_GI)
1633 bitrate = (bitrate / 9) * 10;
1635 /* do NOT round down here */
1636 return (bitrate + 50000) / 100000;
1639 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1640 int flags, struct net_device *dev,
1641 u8 *mac_addr, struct station_info *sinfo)
1644 struct nlattr *sinfoattr, *txrate;
1647 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1651 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1652 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1654 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1656 goto nla_put_failure;
1657 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
1658 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
1659 sinfo->inactive_time);
1660 if (sinfo->filled & STATION_INFO_RX_BYTES)
1661 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
1663 if (sinfo->filled & STATION_INFO_TX_BYTES)
1664 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1666 if (sinfo->filled & STATION_INFO_LLID)
1667 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
1669 if (sinfo->filled & STATION_INFO_PLID)
1670 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
1672 if (sinfo->filled & STATION_INFO_PLINK_STATE)
1673 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
1674 sinfo->plink_state);
1675 if (sinfo->filled & STATION_INFO_SIGNAL)
1676 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
1678 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
1679 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
1681 goto nla_put_failure;
1683 /* nl80211_calculate_bitrate will return 0 for mcs >= 32 */
1684 bitrate = nl80211_calculate_bitrate(&sinfo->txrate);
1686 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
1688 if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
1689 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
1691 if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
1692 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
1693 if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
1694 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
1696 nla_nest_end(msg, txrate);
1698 if (sinfo->filled & STATION_INFO_RX_PACKETS)
1699 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
1701 if (sinfo->filled & STATION_INFO_TX_PACKETS)
1702 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
1704 nla_nest_end(msg, sinfoattr);
1706 return genlmsg_end(msg, hdr);
1709 genlmsg_cancel(msg, hdr);
1713 static int nl80211_dump_station(struct sk_buff *skb,
1714 struct netlink_callback *cb)
1716 struct station_info sinfo;
1717 struct cfg80211_registered_device *dev;
1718 struct net_device *netdev;
1719 u8 mac_addr[ETH_ALEN];
1720 int ifidx = cb->args[0];
1721 int sta_idx = cb->args[1];
1725 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1726 nl80211_fam.attrbuf, nl80211_fam.maxattr,
1731 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
1734 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
1741 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1747 dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
1753 if (!dev->ops->dump_station) {
1759 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
1766 if (nl80211_send_station(skb,
1767 NETLINK_CB(cb->skb).pid,
1768 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1778 cb->args[1] = sta_idx;
1781 cfg80211_unlock_rdev(dev);
1788 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
1790 struct cfg80211_registered_device *rdev;
1792 struct net_device *dev;
1793 struct station_info sinfo;
1794 struct sk_buff *msg;
1795 u8 *mac_addr = NULL;
1797 memset(&sinfo, 0, sizeof(sinfo));
1799 if (!info->attrs[NL80211_ATTR_MAC])
1802 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1806 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1810 if (!rdev->ops->get_station) {
1815 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
1819 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1823 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
1824 dev, mac_addr, &sinfo) < 0)
1827 err = genlmsg_reply(msg, info);
1833 cfg80211_unlock_rdev(rdev);
1842 * Get vlan interface making sure it is on the right wiphy.
1844 static int get_vlan(struct genl_info *info,
1845 struct cfg80211_registered_device *rdev,
1846 struct net_device **vlan)
1848 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
1852 *vlan = dev_get_by_index(genl_info_net(info),
1853 nla_get_u32(vlanattr));
1856 if (!(*vlan)->ieee80211_ptr)
1858 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
1864 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
1866 struct cfg80211_registered_device *rdev;
1868 struct net_device *dev;
1869 struct station_parameters params;
1870 u8 *mac_addr = NULL;
1872 memset(¶ms, 0, sizeof(params));
1874 params.listen_interval = -1;
1876 if (info->attrs[NL80211_ATTR_STA_AID])
1879 if (!info->attrs[NL80211_ATTR_MAC])
1882 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1884 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
1885 params.supported_rates =
1886 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1887 params.supported_rates_len =
1888 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1891 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1892 params.listen_interval =
1893 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1895 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1897 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1899 if (parse_station_flags(info, ¶ms))
1902 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
1903 params.plink_action =
1904 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
1908 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1912 err = get_vlan(info, rdev, ¶ms.vlan);
1916 /* validate settings */
1919 switch (dev->ieee80211_ptr->iftype) {
1920 case NL80211_IFTYPE_AP:
1921 case NL80211_IFTYPE_AP_VLAN:
1922 /* disallow mesh-specific things */
1923 if (params.plink_action)
1926 case NL80211_IFTYPE_STATION:
1927 /* disallow everything but AUTHORIZED flag */
1928 if (params.plink_action)
1932 if (params.supported_rates)
1936 if (params.listen_interval >= 0)
1938 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
1941 case NL80211_IFTYPE_MESH_POINT:
1942 /* disallow things mesh doesn't support */
1947 if (params.listen_interval >= 0)
1949 if (params.supported_rates)
1951 if (params.sta_flags_mask)
1961 if (!rdev->ops->change_station) {
1966 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, ¶ms);
1970 dev_put(params.vlan);
1971 cfg80211_unlock_rdev(rdev);
1979 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
1981 struct cfg80211_registered_device *rdev;
1983 struct net_device *dev;
1984 struct station_parameters params;
1985 u8 *mac_addr = NULL;
1987 memset(¶ms, 0, sizeof(params));
1989 if (!info->attrs[NL80211_ATTR_MAC])
1992 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1995 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
1998 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1999 params.supported_rates =
2000 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2001 params.supported_rates_len =
2002 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2003 params.listen_interval =
2004 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2006 if (info->attrs[NL80211_ATTR_STA_AID]) {
2007 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2008 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2012 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2014 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2016 if (parse_station_flags(info, ¶ms))
2021 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2025 err = get_vlan(info, rdev, ¶ms.vlan);
2029 /* validate settings */
2032 switch (dev->ieee80211_ptr->iftype) {
2033 case NL80211_IFTYPE_AP:
2034 case NL80211_IFTYPE_AP_VLAN:
2035 /* all ok but must have AID */
2039 case NL80211_IFTYPE_MESH_POINT:
2040 /* disallow things mesh doesn't support */
2047 if (params.listen_interval >= 0)
2049 if (params.supported_rates)
2051 if (params.sta_flags_mask)
2061 if (!rdev->ops->add_station) {
2066 if (!netif_running(dev)) {
2071 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, ¶ms);
2075 dev_put(params.vlan);
2076 cfg80211_unlock_rdev(rdev);
2084 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2086 struct cfg80211_registered_device *rdev;
2088 struct net_device *dev;
2089 u8 *mac_addr = NULL;
2091 if (info->attrs[NL80211_ATTR_MAC])
2092 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2096 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2100 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2101 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2102 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2107 if (!rdev->ops->del_station) {
2112 err = rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2115 cfg80211_unlock_rdev(rdev);
2123 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2124 int flags, struct net_device *dev,
2125 u8 *dst, u8 *next_hop,
2126 struct mpath_info *pinfo)
2129 struct nlattr *pinfoattr;
2131 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2135 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2136 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2137 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2139 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2141 goto nla_put_failure;
2142 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2143 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2145 if (pinfo->filled & MPATH_INFO_DSN)
2146 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
2148 if (pinfo->filled & MPATH_INFO_METRIC)
2149 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2151 if (pinfo->filled & MPATH_INFO_EXPTIME)
2152 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2154 if (pinfo->filled & MPATH_INFO_FLAGS)
2155 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2157 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2158 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2159 pinfo->discovery_timeout);
2160 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2161 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2162 pinfo->discovery_retries);
2164 nla_nest_end(msg, pinfoattr);
2166 return genlmsg_end(msg, hdr);
2169 genlmsg_cancel(msg, hdr);
2173 static int nl80211_dump_mpath(struct sk_buff *skb,
2174 struct netlink_callback *cb)
2176 struct mpath_info pinfo;
2177 struct cfg80211_registered_device *dev;
2178 struct net_device *netdev;
2180 u8 next_hop[ETH_ALEN];
2181 int ifidx = cb->args[0];
2182 int path_idx = cb->args[1];
2186 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
2187 nl80211_fam.attrbuf, nl80211_fam.maxattr,
2192 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
2195 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
2202 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2208 dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
2214 if (!dev->ops->dump_mpath) {
2219 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2225 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2226 dst, next_hop, &pinfo);
2232 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2233 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2234 netdev, dst, next_hop,
2243 cb->args[1] = path_idx;
2246 cfg80211_unlock_rdev(dev);
2253 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2255 struct cfg80211_registered_device *rdev;
2257 struct net_device *dev;
2258 struct mpath_info pinfo;
2259 struct sk_buff *msg;
2261 u8 next_hop[ETH_ALEN];
2263 memset(&pinfo, 0, sizeof(pinfo));
2265 if (!info->attrs[NL80211_ATTR_MAC])
2268 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2272 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2276 if (!rdev->ops->get_mpath) {
2281 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2286 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2290 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2294 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2295 dev, dst, next_hop, &pinfo) < 0)
2298 err = genlmsg_reply(msg, info);
2304 cfg80211_unlock_rdev(rdev);
2312 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2314 struct cfg80211_registered_device *rdev;
2316 struct net_device *dev;
2318 u8 *next_hop = NULL;
2320 if (!info->attrs[NL80211_ATTR_MAC])
2323 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2326 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2327 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2331 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2335 if (!rdev->ops->change_mpath) {
2340 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2345 if (!netif_running(dev)) {
2350 err = rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2353 cfg80211_unlock_rdev(rdev);
2360 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2362 struct cfg80211_registered_device *rdev;
2364 struct net_device *dev;
2366 u8 *next_hop = NULL;
2368 if (!info->attrs[NL80211_ATTR_MAC])
2371 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2374 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2375 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2379 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2383 if (!rdev->ops->add_mpath) {
2388 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2393 if (!netif_running(dev)) {
2398 err = rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2401 cfg80211_unlock_rdev(rdev);
2409 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2411 struct cfg80211_registered_device *rdev;
2413 struct net_device *dev;
2416 if (info->attrs[NL80211_ATTR_MAC])
2417 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2421 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2425 if (!rdev->ops->del_mpath) {
2430 err = rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2433 cfg80211_unlock_rdev(rdev);
2441 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2443 struct cfg80211_registered_device *rdev;
2445 struct net_device *dev;
2446 struct bss_parameters params;
2448 memset(¶ms, 0, sizeof(params));
2449 /* default to not changing parameters */
2450 params.use_cts_prot = -1;
2451 params.use_short_preamble = -1;
2452 params.use_short_slot_time = -1;
2454 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2455 params.use_cts_prot =
2456 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2457 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2458 params.use_short_preamble =
2459 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2460 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2461 params.use_short_slot_time =
2462 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2463 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2464 params.basic_rates =
2465 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2466 params.basic_rates_len =
2467 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2472 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2476 if (!rdev->ops->change_bss) {
2481 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
2486 err = rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms);
2489 cfg80211_unlock_rdev(rdev);
2497 static const struct nla_policy
2498 reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2499 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2500 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2501 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2502 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2503 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2504 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2507 static int parse_reg_rule(struct nlattr *tb[],
2508 struct ieee80211_reg_rule *reg_rule)
2510 struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
2511 struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
2513 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2515 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2517 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2519 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2521 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2524 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2526 freq_range->start_freq_khz =
2527 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2528 freq_range->end_freq_khz =
2529 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2530 freq_range->max_bandwidth_khz =
2531 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2533 power_rule->max_eirp =
2534 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2536 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2537 power_rule->max_antenna_gain =
2538 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2543 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2549 * You should only get this when cfg80211 hasn't yet initialized
2550 * completely when built-in to the kernel right between the time
2551 * window between nl80211_init() and regulatory_init(), if that is
2554 mutex_lock(&cfg80211_mutex);
2555 if (unlikely(!cfg80211_regdomain)) {
2556 mutex_unlock(&cfg80211_mutex);
2557 return -EINPROGRESS;
2559 mutex_unlock(&cfg80211_mutex);
2561 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2564 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2566 #ifdef CONFIG_WIRELESS_OLD_REGULATORY
2567 /* We ignore world regdom requests with the old regdom setup */
2568 if (is_world_regdom(data))
2572 r = regulatory_hint_user(data);
2577 static int nl80211_get_mesh_params(struct sk_buff *skb,
2578 struct genl_info *info)
2580 struct cfg80211_registered_device *rdev;
2581 struct mesh_config cur_params;
2583 struct net_device *dev;
2585 struct nlattr *pinfoattr;
2586 struct sk_buff *msg;
2590 /* Look up our device */
2591 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2595 if (!rdev->ops->get_mesh_params) {
2600 /* Get the mesh params */
2601 err = rdev->ops->get_mesh_params(&rdev->wiphy, dev, &cur_params);
2605 /* Draw up a netlink message to send back */
2606 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2611 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2612 NL80211_CMD_GET_MESH_PARAMS);
2614 goto nla_put_failure;
2615 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
2617 goto nla_put_failure;
2618 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2619 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2620 cur_params.dot11MeshRetryTimeout);
2621 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2622 cur_params.dot11MeshConfirmTimeout);
2623 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2624 cur_params.dot11MeshHoldingTimeout);
2625 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2626 cur_params.dot11MeshMaxPeerLinks);
2627 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2628 cur_params.dot11MeshMaxRetries);
2629 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2630 cur_params.dot11MeshTTL);
2631 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2632 cur_params.auto_open_plinks);
2633 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2634 cur_params.dot11MeshHWMPmaxPREQretries);
2635 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2636 cur_params.path_refresh_time);
2637 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2638 cur_params.min_discovery_timeout);
2639 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2640 cur_params.dot11MeshHWMPactivePathTimeout);
2641 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2642 cur_params.dot11MeshHWMPpreqMinInterval);
2643 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2644 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2645 nla_nest_end(msg, pinfoattr);
2646 genlmsg_end(msg, hdr);
2647 err = genlmsg_reply(msg, info);
2651 genlmsg_cancel(msg, hdr);
2655 cfg80211_unlock_rdev(rdev);
2663 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2665 if (table[attr_num]) {\
2666 cfg.param = nla_fn(table[attr_num]); \
2667 mask |= (1 << (attr_num - 1)); \
2671 static struct nla_policy
2672 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] __read_mostly = {
2673 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2674 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2675 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2676 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2677 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2678 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2679 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2681 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2682 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2683 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2684 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2685 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2686 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2689 static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
2693 struct cfg80211_registered_device *rdev;
2694 struct net_device *dev;
2695 struct mesh_config cfg;
2696 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2697 struct nlattr *parent_attr;
2699 parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
2702 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2703 parent_attr, nl80211_meshconf_params_policy))
2708 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2712 if (!rdev->ops->set_mesh_params) {
2717 /* This makes sure that there aren't more than 32 mesh config
2718 * parameters (otherwise our bitfield scheme would not work.) */
2719 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2721 /* Fill in the params struct */
2723 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2724 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2725 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2726 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2727 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2728 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2729 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2730 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2731 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2732 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2733 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2734 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2735 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2736 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2737 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2738 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2740 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2741 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2742 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2743 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2745 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2746 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2748 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2749 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2751 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2752 dot11MeshHWMPnetDiameterTraversalTime,
2753 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2757 err = rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask);
2761 cfg80211_unlock_rdev(rdev);
2769 #undef FILL_IN_MESH_PARAM_IF_SET
2771 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2773 struct sk_buff *msg;
2775 struct nlattr *nl_reg_rules;
2779 mutex_lock(&cfg80211_mutex);
2781 if (!cfg80211_regdomain)
2784 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2790 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2791 NL80211_CMD_GET_REG);
2793 goto nla_put_failure;
2795 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2796 cfg80211_regdomain->alpha2);
2798 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2800 goto nla_put_failure;
2802 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2803 struct nlattr *nl_reg_rule;
2804 const struct ieee80211_reg_rule *reg_rule;
2805 const struct ieee80211_freq_range *freq_range;
2806 const struct ieee80211_power_rule *power_rule;
2808 reg_rule = &cfg80211_regdomain->reg_rules[i];
2809 freq_range = ®_rule->freq_range;
2810 power_rule = ®_rule->power_rule;
2812 nl_reg_rule = nla_nest_start(msg, i);
2814 goto nla_put_failure;
2816 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2818 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2819 freq_range->start_freq_khz);
2820 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2821 freq_range->end_freq_khz);
2822 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2823 freq_range->max_bandwidth_khz);
2824 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
2825 power_rule->max_antenna_gain);
2826 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
2827 power_rule->max_eirp);
2829 nla_nest_end(msg, nl_reg_rule);
2832 nla_nest_end(msg, nl_reg_rules);
2834 genlmsg_end(msg, hdr);
2835 err = genlmsg_reply(msg, info);
2839 genlmsg_cancel(msg, hdr);
2842 mutex_unlock(&cfg80211_mutex);
2846 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
2848 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
2849 struct nlattr *nl_reg_rule;
2850 char *alpha2 = NULL;
2851 int rem_reg_rules = 0, r = 0;
2852 u32 num_rules = 0, rule_idx = 0, size_of_regd;
2853 struct ieee80211_regdomain *rd = NULL;
2855 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2858 if (!info->attrs[NL80211_ATTR_REG_RULES])
2861 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2863 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2866 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
2870 mutex_lock(&cfg80211_mutex);
2872 if (!reg_is_valid_request(alpha2)) {
2877 size_of_regd = sizeof(struct ieee80211_regdomain) +
2878 (num_rules * sizeof(struct ieee80211_reg_rule));
2880 rd = kzalloc(size_of_regd, GFP_KERNEL);
2886 rd->n_reg_rules = num_rules;
2887 rd->alpha2[0] = alpha2[0];
2888 rd->alpha2[1] = alpha2[1];
2890 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2892 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
2893 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
2895 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
2901 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
2907 BUG_ON(rule_idx != num_rules);
2911 mutex_unlock(&cfg80211_mutex);
2916 mutex_unlock(&cfg80211_mutex);
2921 static int validate_scan_freqs(struct nlattr *freqs)
2923 struct nlattr *attr1, *attr2;
2924 int n_channels = 0, tmp1, tmp2;
2926 nla_for_each_nested(attr1, freqs, tmp1) {
2929 * Some hardware has a limited channel list for
2930 * scanning, and it is pretty much nonsensical
2931 * to scan for a channel twice, so disallow that
2932 * and don't require drivers to check that the
2933 * channel list they get isn't longer than what
2934 * they can scan, as long as they can scan all
2935 * the channels they registered at once.
2937 nla_for_each_nested(attr2, freqs, tmp2)
2938 if (attr1 != attr2 &&
2939 nla_get_u32(attr1) == nla_get_u32(attr2))
2946 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
2948 struct cfg80211_registered_device *rdev;
2949 struct net_device *dev;
2950 struct cfg80211_scan_request *request;
2951 struct cfg80211_ssid *ssid;
2952 struct ieee80211_channel *channel;
2953 struct nlattr *attr;
2954 struct wiphy *wiphy;
2955 int err, tmp, n_ssids = 0, n_channels, i;
2956 enum ieee80211_band band;
2959 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2964 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2968 wiphy = &rdev->wiphy;
2970 if (!rdev->ops->scan) {
2975 if (!netif_running(dev)) {
2980 if (rdev->scan_req) {
2985 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2986 n_channels = validate_scan_freqs(
2987 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
2995 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
2996 if (wiphy->bands[band])
2997 n_channels += wiphy->bands[band]->n_channels;
3000 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3001 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3004 if (n_ssids > wiphy->max_scan_ssids) {
3009 if (info->attrs[NL80211_ATTR_IE])
3010 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3014 if (ie_len > wiphy->max_scan_ie_len) {
3019 request = kzalloc(sizeof(*request)
3020 + sizeof(*ssid) * n_ssids
3021 + sizeof(channel) * n_channels
3022 + ie_len, GFP_KERNEL);
3028 request->channels = (void *)((char *)request + sizeof(*request));
3029 request->n_channels = n_channels;
3031 request->ssids = (void *)(request->channels + n_channels);
3032 request->n_ssids = n_ssids;
3035 request->ie = (void *)(request->ssids + n_ssids);
3037 request->ie = (void *)(request->channels + n_channels);
3040 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3041 /* user specified, bail out if channel not found */
3042 request->n_channels = n_channels;
3044 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3045 request->channels[i] = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3046 if (!request->channels[i]) {
3055 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3057 if (!wiphy->bands[band])
3059 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3060 request->channels[i] = &wiphy->bands[band]->channels[j];
3067 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3068 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3069 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
3073 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3074 request->ssids[i].ssid_len = nla_len(attr);
3079 if (info->attrs[NL80211_ATTR_IE]) {
3080 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3081 memcpy((void *)request->ie,
3082 nla_data(info->attrs[NL80211_ATTR_IE]),
3087 request->wiphy = &rdev->wiphy;
3089 rdev->scan_req = request;
3090 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3093 nl80211_send_scan_start(rdev, dev);
3099 rdev->scan_req = NULL;
3103 cfg80211_unlock_rdev(rdev);
3111 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
3112 struct cfg80211_registered_device *rdev,
3113 struct wireless_dev *wdev,
3114 struct cfg80211_internal_bss *intbss)
3116 struct cfg80211_bss *res = &intbss->pub;
3121 ASSERT_WDEV_LOCK(wdev);
3123 hdr = nl80211hdr_put(msg, pid, seq, flags,
3124 NL80211_CMD_NEW_SCAN_RESULTS);
3128 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION,
3129 rdev->bss_generation);
3130 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3132 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3134 goto nla_put_failure;
3135 if (!is_zero_ether_addr(res->bssid))
3136 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3137 if (res->information_elements && res->len_information_elements)
3138 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3139 res->len_information_elements,
3140 res->information_elements);
3142 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3143 if (res->beacon_interval)
3144 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3145 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3146 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3148 switch (rdev->wiphy.signal_type) {
3149 case CFG80211_SIGNAL_TYPE_MBM:
3150 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3152 case CFG80211_SIGNAL_TYPE_UNSPEC:
3153 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3159 switch (wdev->iftype) {
3160 case NL80211_IFTYPE_STATION:
3161 if (intbss == wdev->current_bss)
3162 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3163 NL80211_BSS_STATUS_ASSOCIATED);
3164 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3165 if (intbss != wdev->auth_bsses[i])
3167 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3168 NL80211_BSS_STATUS_AUTHENTICATED);
3172 case NL80211_IFTYPE_ADHOC:
3173 if (intbss == wdev->current_bss)
3174 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3175 NL80211_BSS_STATUS_IBSS_JOINED);
3181 nla_nest_end(msg, bss);
3183 return genlmsg_end(msg, hdr);
3186 genlmsg_cancel(msg, hdr);
3190 static int nl80211_dump_scan(struct sk_buff *skb,
3191 struct netlink_callback *cb)
3193 struct cfg80211_registered_device *rdev;
3194 struct net_device *dev;
3195 struct cfg80211_internal_bss *scan;
3196 struct wireless_dev *wdev;
3197 int ifidx = cb->args[0];
3198 int start = cb->args[1], idx = 0;
3202 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
3203 nl80211_fam.attrbuf, nl80211_fam.maxattr,
3208 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
3211 ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
3214 cb->args[0] = ifidx;
3217 dev = dev_get_by_index(sock_net(skb->sk), ifidx);
3221 rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
3223 err = PTR_ERR(rdev);
3224 goto out_put_netdev;
3227 wdev = dev->ieee80211_ptr;
3230 spin_lock_bh(&rdev->bss_lock);
3231 cfg80211_bss_expire(rdev);
3233 list_for_each_entry(scan, &rdev->bss_list, list) {
3236 if (nl80211_send_bss(skb,
3237 NETLINK_CB(cb->skb).pid,
3238 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3239 rdev, wdev, scan) < 0) {
3246 spin_unlock_bh(&rdev->bss_lock);
3251 cfg80211_unlock_rdev(rdev);
3258 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3260 return auth_type <= NL80211_AUTHTYPE_MAX;
3263 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3265 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3266 NL80211_WPA_VERSION_2));
3269 static bool nl80211_valid_akm_suite(u32 akm)
3271 return akm == WLAN_AKM_SUITE_8021X ||
3272 akm == WLAN_AKM_SUITE_PSK;
3275 static bool nl80211_valid_cipher_suite(u32 cipher)
3277 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3278 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3279 cipher == WLAN_CIPHER_SUITE_TKIP ||
3280 cipher == WLAN_CIPHER_SUITE_CCMP ||
3281 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
3285 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3287 struct cfg80211_registered_device *rdev;
3288 struct net_device *dev;
3289 struct ieee80211_channel *chan;
3290 const u8 *bssid, *ssid, *ie = NULL;
3291 int err, ssid_len, ie_len = 0;
3292 enum nl80211_auth_type auth_type;
3293 struct key_parse key;
3295 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3298 if (!info->attrs[NL80211_ATTR_MAC])
3301 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3304 if (!info->attrs[NL80211_ATTR_SSID])
3307 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3310 err = nl80211_parse_key(info, &key);
3315 if (!key.p.key || !key.p.key_len)
3317 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3318 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3319 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3320 key.p.key_len != WLAN_KEY_LEN_WEP104))
3331 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
3335 if (!rdev->ops->auth) {
3340 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3345 if (!netif_running(dev)) {
3350 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3351 chan = ieee80211_get_channel(&rdev->wiphy,
3352 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3353 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) {
3358 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3359 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3361 if (info->attrs[NL80211_ATTR_IE]) {
3362 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3363 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3366 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3367 if (!nl80211_valid_auth_type(auth_type)) {
3372 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
3373 ssid, ssid_len, ie, ie_len,
3374 key.p.key, key.p.key_len, key.idx);
3377 cfg80211_unlock_rdev(rdev);
3384 static int nl80211_crypto_settings(struct genl_info *info,
3385 struct cfg80211_crypto_settings *settings,
3388 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3390 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
3394 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3395 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3396 settings->n_ciphers_pairwise = len / sizeof(u32);
3398 if (len % sizeof(u32))
3401 if (settings->n_ciphers_pairwise > cipher_limit)
3404 memcpy(settings->ciphers_pairwise, data, len);
3406 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3407 if (!nl80211_valid_cipher_suite(
3408 settings->ciphers_pairwise[i]))
3412 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
3413 settings->cipher_group =
3414 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
3415 if (!nl80211_valid_cipher_suite(settings->cipher_group))
3419 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
3420 settings->wpa_versions =
3421 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
3422 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
3426 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
3430 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
3431 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
3432 settings->n_akm_suites = len / sizeof(u32);
3434 if (len % sizeof(u32))
3437 memcpy(settings->akm_suites, data, len);
3439 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3440 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
3447 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
3449 struct cfg80211_registered_device *rdev;
3450 struct net_device *dev;
3451 struct cfg80211_crypto_settings crypto;
3452 struct ieee80211_channel *chan;
3453 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
3454 int err, ssid_len, ie_len = 0;
3455 bool use_mfp = false;
3457 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3460 if (!info->attrs[NL80211_ATTR_MAC] ||
3461 !info->attrs[NL80211_ATTR_SSID] ||
3462 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
3467 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
3471 if (!rdev->ops->assoc) {
3476 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3481 if (!netif_running(dev)) {
3486 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3488 chan = ieee80211_get_channel(&rdev->wiphy,
3489 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3490 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) {
3495 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3496 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3498 if (info->attrs[NL80211_ATTR_IE]) {
3499 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3500 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3503 if (info->attrs[NL80211_ATTR_USE_MFP]) {
3504 enum nl80211_mfp mfp =
3505 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
3506 if (mfp == NL80211_MFP_REQUIRED)
3508 else if (mfp != NL80211_MFP_NO) {
3514 if (info->attrs[NL80211_ATTR_PREV_BSSID])
3515 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
3517 err = nl80211_crypto_settings(info, &crypto, 1);
3519 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
3520 ssid, ssid_len, ie, ie_len, use_mfp,
3524 cfg80211_unlock_rdev(rdev);
3531 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3533 struct cfg80211_registered_device *rdev;
3534 struct net_device *dev;
3535 const u8 *ie = NULL, *bssid;
3536 int err, ie_len = 0;
3539 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3542 if (!info->attrs[NL80211_ATTR_MAC])
3545 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3550 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
3554 if (!rdev->ops->deauth) {
3559 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3564 if (!netif_running(dev)) {
3569 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3571 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3572 if (reason_code == 0) {
3573 /* Reason Code 0 is reserved */
3578 if (info->attrs[NL80211_ATTR_IE]) {
3579 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3580 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3583 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code);
3586 cfg80211_unlock_rdev(rdev);
3593 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3595 struct cfg80211_registered_device *rdev;
3596 struct net_device *dev;
3597 const u8 *ie = NULL, *bssid;
3598 int err, ie_len = 0;
3601 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3604 if (!info->attrs[NL80211_ATTR_MAC])
3607 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3612 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
3616 if (!rdev->ops->disassoc) {
3621 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3626 if (!netif_running(dev)) {
3631 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3633 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3634 if (reason_code == 0) {
3635 /* Reason Code 0 is reserved */
3640 if (info->attrs[NL80211_ATTR_IE]) {
3641 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3642 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3645 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code);
3648 cfg80211_unlock_rdev(rdev);
3655 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3657 struct cfg80211_registered_device *rdev;
3658 struct net_device *dev;
3659 struct cfg80211_ibss_params ibss;
3660 struct wiphy *wiphy;
3661 struct cfg80211_cached_keys *connkeys = NULL;
3664 memset(&ibss, 0, sizeof(ibss));
3666 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3669 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3670 !info->attrs[NL80211_ATTR_SSID] ||
3671 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3674 ibss.beacon_interval = 100;
3676 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3677 ibss.beacon_interval =
3678 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3679 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3685 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
3689 if (!rdev->ops->join_ibss) {
3694 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3699 if (!netif_running(dev)) {
3704 wiphy = &rdev->wiphy;
3706 if (info->attrs[NL80211_ATTR_MAC])
3707 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3708 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3709 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3711 if (info->attrs[NL80211_ATTR_IE]) {
3712 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3713 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3716 ibss.channel = ieee80211_get_channel(wiphy,
3717 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3718 if (!ibss.channel ||
3719 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
3720 ibss.channel->flags & IEEE80211_CHAN_DISABLED) {
3725 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
3726 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3728 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
3729 connkeys = nl80211_parse_connkeys(rdev,
3730 info->attrs[NL80211_ATTR_KEYS]);
3731 if (IS_ERR(connkeys)) {
3732 err = PTR_ERR(connkeys);
3738 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
3741 cfg80211_unlock_rdev(rdev);
3750 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3752 struct cfg80211_registered_device *rdev;
3753 struct net_device *dev;
3758 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
3762 if (!rdev->ops->leave_ibss) {
3767 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3772 if (!netif_running(dev)) {
3777 err = cfg80211_leave_ibss(rdev, dev, false);
3780 cfg80211_unlock_rdev(rdev);
3787 #ifdef CONFIG_NL80211_TESTMODE
3788 static struct genl_multicast_group nl80211_testmode_mcgrp = {
3792 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
3794 struct cfg80211_registered_device *rdev;
3797 if (!info->attrs[NL80211_ATTR_TESTDATA])
3802 rdev = cfg80211_get_dev_from_info(info);
3804 err = PTR_ERR(rdev);
3809 if (rdev->ops->testmode_cmd) {
3810 rdev->testmode_info = info;
3811 err = rdev->ops->testmode_cmd(&rdev->wiphy,
3812 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
3813 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
3814 rdev->testmode_info = NULL;
3817 cfg80211_unlock_rdev(rdev);
3824 static struct sk_buff *
3825 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
3826 int approxlen, u32 pid, u32 seq, gfp_t gfp)
3828 struct sk_buff *skb;
3830 struct nlattr *data;
3832 skb = nlmsg_new(approxlen + 100, gfp);
3836 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
3842 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3843 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
3845 ((void **)skb->cb)[0] = rdev;
3846 ((void **)skb->cb)[1] = hdr;
3847 ((void **)skb->cb)[2] = data;
3856 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
3859 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
3861 if (WARN_ON(!rdev->testmode_info))
3864 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
3865 rdev->testmode_info->snd_pid,
3866 rdev->testmode_info->snd_seq,
3869 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
3871 int cfg80211_testmode_reply(struct sk_buff *skb)
3873 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
3874 void *hdr = ((void **)skb->cb)[1];
3875 struct nlattr *data = ((void **)skb->cb)[2];
3877 if (WARN_ON(!rdev->testmode_info)) {
3882 nla_nest_end(skb, data);
3883 genlmsg_end(skb, hdr);
3884 return genlmsg_reply(skb, rdev->testmode_info);
3886 EXPORT_SYMBOL(cfg80211_testmode_reply);
3888 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
3889 int approxlen, gfp_t gfp)
3891 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
3893 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
3895 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
3897 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
3899 void *hdr = ((void **)skb->cb)[1];
3900 struct nlattr *data = ((void **)skb->cb)[2];
3902 nla_nest_end(skb, data);
3903 genlmsg_end(skb, hdr);
3904 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
3906 EXPORT_SYMBOL(cfg80211_testmode_event);
3909 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
3911 struct cfg80211_registered_device *rdev;
3912 struct net_device *dev;
3913 struct cfg80211_connect_params connect;
3914 struct wiphy *wiphy;
3915 struct cfg80211_cached_keys *connkeys = NULL;
3918 memset(&connect, 0, sizeof(connect));
3920 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3923 if (!info->attrs[NL80211_ATTR_SSID] ||
3924 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3927 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3929 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3930 if (!nl80211_valid_auth_type(connect.auth_type))
3933 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3935 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
3937 err = nl80211_crypto_settings(info, &connect.crypto,
3938 NL80211_MAX_NR_CIPHER_SUITES);
3943 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
3947 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3952 if (!netif_running(dev)) {
3957 wiphy = &rdev->wiphy;
3959 if (info->attrs[NL80211_ATTR_MAC])
3960 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3961 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3962 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3964 if (info->attrs[NL80211_ATTR_IE]) {
3965 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3966 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3969 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3971 ieee80211_get_channel(wiphy,
3972 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3973 if (!connect.channel ||
3974 connect.channel->flags & IEEE80211_CHAN_DISABLED) {
3980 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
3981 connkeys = nl80211_parse_connkeys(rdev,
3982 info->attrs[NL80211_ATTR_KEYS]);
3983 if (IS_ERR(connkeys)) {
3984 err = PTR_ERR(connkeys);
3990 err = cfg80211_connect(rdev, dev, &connect, connkeys);
3993 cfg80211_unlock_rdev(rdev);
4002 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4004 struct cfg80211_registered_device *rdev;
4005 struct net_device *dev;
4009 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4010 reason = WLAN_REASON_DEAUTH_LEAVING;
4012 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4019 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4023 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
4028 if (!netif_running(dev)) {
4033 err = cfg80211_disconnect(rdev, dev, reason, true);
4036 cfg80211_unlock_rdev(rdev);
4043 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4045 struct cfg80211_registered_device *rdev;
4050 if (!info->attrs[NL80211_ATTR_PID])
4053 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4057 rdev = cfg80211_get_dev_from_info(info);
4059 err = PTR_ERR(rdev);
4063 net = get_net_ns_by_pid(pid);
4071 /* check if anything to do */
4072 if (net_eq(wiphy_net(&rdev->wiphy), net))
4075 err = cfg80211_switch_netns(rdev, net);
4079 cfg80211_unlock_rdev(rdev);
4084 static struct genl_ops nl80211_ops[] = {
4086 .cmd = NL80211_CMD_GET_WIPHY,
4087 .doit = nl80211_get_wiphy,
4088 .dumpit = nl80211_dump_wiphy,
4089 .policy = nl80211_policy,
4090 /* can be retrieved by unprivileged users */
4093 .cmd = NL80211_CMD_SET_WIPHY,
4094 .doit = nl80211_set_wiphy,
4095 .policy = nl80211_policy,
4096 .flags = GENL_ADMIN_PERM,
4099 .cmd = NL80211_CMD_GET_INTERFACE,
4100 .doit = nl80211_get_interface,
4101 .dumpit = nl80211_dump_interface,
4102 .policy = nl80211_policy,
4103 /* can be retrieved by unprivileged users */
4106 .cmd = NL80211_CMD_SET_INTERFACE,
4107 .doit = nl80211_set_interface,
4108 .policy = nl80211_policy,
4109 .flags = GENL_ADMIN_PERM,
4112 .cmd = NL80211_CMD_NEW_INTERFACE,
4113 .doit = nl80211_new_interface,
4114 .policy = nl80211_policy,
4115 .flags = GENL_ADMIN_PERM,
4118 .cmd = NL80211_CMD_DEL_INTERFACE,
4119 .doit = nl80211_del_interface,
4120 .policy = nl80211_policy,
4121 .flags = GENL_ADMIN_PERM,
4124 .cmd = NL80211_CMD_GET_KEY,
4125 .doit = nl80211_get_key,
4126 .policy = nl80211_policy,
4127 .flags = GENL_ADMIN_PERM,
4130 .cmd = NL80211_CMD_SET_KEY,
4131 .doit = nl80211_set_key,
4132 .policy = nl80211_policy,
4133 .flags = GENL_ADMIN_PERM,
4136 .cmd = NL80211_CMD_NEW_KEY,
4137 .doit = nl80211_new_key,
4138 .policy = nl80211_policy,
4139 .flags = GENL_ADMIN_PERM,
4142 .cmd = NL80211_CMD_DEL_KEY,
4143 .doit = nl80211_del_key,
4144 .policy = nl80211_policy,
4145 .flags = GENL_ADMIN_PERM,
4148 .cmd = NL80211_CMD_SET_BEACON,
4149 .policy = nl80211_policy,
4150 .flags = GENL_ADMIN_PERM,
4151 .doit = nl80211_addset_beacon,
4154 .cmd = NL80211_CMD_NEW_BEACON,
4155 .policy = nl80211_policy,
4156 .flags = GENL_ADMIN_PERM,
4157 .doit = nl80211_addset_beacon,
4160 .cmd = NL80211_CMD_DEL_BEACON,
4161 .policy = nl80211_policy,
4162 .flags = GENL_ADMIN_PERM,
4163 .doit = nl80211_del_beacon,
4166 .cmd = NL80211_CMD_GET_STATION,
4167 .doit = nl80211_get_station,
4168 .dumpit = nl80211_dump_station,
4169 .policy = nl80211_policy,
4172 .cmd = NL80211_CMD_SET_STATION,
4173 .doit = nl80211_set_station,
4174 .policy = nl80211_policy,
4175 .flags = GENL_ADMIN_PERM,
4178 .cmd = NL80211_CMD_NEW_STATION,
4179 .doit = nl80211_new_station,
4180 .policy = nl80211_policy,
4181 .flags = GENL_ADMIN_PERM,
4184 .cmd = NL80211_CMD_DEL_STATION,
4185 .doit = nl80211_del_station,
4186 .policy = nl80211_policy,
4187 .flags = GENL_ADMIN_PERM,
4190 .cmd = NL80211_CMD_GET_MPATH,
4191 .doit = nl80211_get_mpath,
4192 .dumpit = nl80211_dump_mpath,
4193 .policy = nl80211_policy,
4194 .flags = GENL_ADMIN_PERM,
4197 .cmd = NL80211_CMD_SET_MPATH,
4198 .doit = nl80211_set_mpath,
4199 .policy = nl80211_policy,
4200 .flags = GENL_ADMIN_PERM,
4203 .cmd = NL80211_CMD_NEW_MPATH,
4204 .doit = nl80211_new_mpath,
4205 .policy = nl80211_policy,
4206 .flags = GENL_ADMIN_PERM,
4209 .cmd = NL80211_CMD_DEL_MPATH,
4210 .doit = nl80211_del_mpath,
4211 .policy = nl80211_policy,
4212 .flags = GENL_ADMIN_PERM,
4215 .cmd = NL80211_CMD_SET_BSS,
4216 .doit = nl80211_set_bss,
4217 .policy = nl80211_policy,
4218 .flags = GENL_ADMIN_PERM,
4221 .cmd = NL80211_CMD_GET_REG,
4222 .doit = nl80211_get_reg,
4223 .policy = nl80211_policy,
4224 /* can be retrieved by unprivileged users */
4227 .cmd = NL80211_CMD_SET_REG,
4228 .doit = nl80211_set_reg,
4229 .policy = nl80211_policy,
4230 .flags = GENL_ADMIN_PERM,
4233 .cmd = NL80211_CMD_REQ_SET_REG,
4234 .doit = nl80211_req_set_reg,
4235 .policy = nl80211_policy,
4236 .flags = GENL_ADMIN_PERM,
4239 .cmd = NL80211_CMD_GET_MESH_PARAMS,
4240 .doit = nl80211_get_mesh_params,
4241 .policy = nl80211_policy,
4242 /* can be retrieved by unprivileged users */
4245 .cmd = NL80211_CMD_SET_MESH_PARAMS,
4246 .doit = nl80211_set_mesh_params,
4247 .policy = nl80211_policy,
4248 .flags = GENL_ADMIN_PERM,
4251 .cmd = NL80211_CMD_TRIGGER_SCAN,
4252 .doit = nl80211_trigger_scan,
4253 .policy = nl80211_policy,
4254 .flags = GENL_ADMIN_PERM,
4257 .cmd = NL80211_CMD_GET_SCAN,
4258 .policy = nl80211_policy,
4259 .dumpit = nl80211_dump_scan,
4262 .cmd = NL80211_CMD_AUTHENTICATE,
4263 .doit = nl80211_authenticate,
4264 .policy = nl80211_policy,
4265 .flags = GENL_ADMIN_PERM,
4268 .cmd = NL80211_CMD_ASSOCIATE,
4269 .doit = nl80211_associate,
4270 .policy = nl80211_policy,
4271 .flags = GENL_ADMIN_PERM,
4274 .cmd = NL80211_CMD_DEAUTHENTICATE,
4275 .doit = nl80211_deauthenticate,
4276 .policy = nl80211_policy,
4277 .flags = GENL_ADMIN_PERM,
4280 .cmd = NL80211_CMD_DISASSOCIATE,
4281 .doit = nl80211_disassociate,
4282 .policy = nl80211_policy,
4283 .flags = GENL_ADMIN_PERM,
4286 .cmd = NL80211_CMD_JOIN_IBSS,
4287 .doit = nl80211_join_ibss,
4288 .policy = nl80211_policy,
4289 .flags = GENL_ADMIN_PERM,
4292 .cmd = NL80211_CMD_LEAVE_IBSS,
4293 .doit = nl80211_leave_ibss,
4294 .policy = nl80211_policy,
4295 .flags = GENL_ADMIN_PERM,
4297 #ifdef CONFIG_NL80211_TESTMODE
4299 .cmd = NL80211_CMD_TESTMODE,
4300 .doit = nl80211_testmode_do,
4301 .policy = nl80211_policy,
4302 .flags = GENL_ADMIN_PERM,
4306 .cmd = NL80211_CMD_CONNECT,
4307 .doit = nl80211_connect,
4308 .policy = nl80211_policy,
4309 .flags = GENL_ADMIN_PERM,
4312 .cmd = NL80211_CMD_DISCONNECT,
4313 .doit = nl80211_disconnect,
4314 .policy = nl80211_policy,
4315 .flags = GENL_ADMIN_PERM,
4318 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
4319 .doit = nl80211_wiphy_netns,
4320 .policy = nl80211_policy,
4321 .flags = GENL_ADMIN_PERM,
4324 static struct genl_multicast_group nl80211_mlme_mcgrp = {
4328 /* multicast groups */
4329 static struct genl_multicast_group nl80211_config_mcgrp = {
4332 static struct genl_multicast_group nl80211_scan_mcgrp = {
4335 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
4336 .name = "regulatory",
4339 /* notification functions */
4341 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
4343 struct sk_buff *msg;
4345 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4349 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
4354 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4355 nl80211_config_mcgrp.id, GFP_KERNEL);
4358 static int nl80211_add_scan_req(struct sk_buff *msg,
4359 struct cfg80211_registered_device *rdev)
4361 struct cfg80211_scan_request *req = rdev->scan_req;
4362 struct nlattr *nest;
4365 ASSERT_RDEV_LOCK(rdev);
4370 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
4372 goto nla_put_failure;
4373 for (i = 0; i < req->n_ssids; i++)
4374 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
4375 nla_nest_end(msg, nest);
4377 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
4379 goto nla_put_failure;
4380 for (i = 0; i < req->n_channels; i++)
4381 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
4382 nla_nest_end(msg, nest);
4385 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
4392 static int nl80211_send_scan_msg(struct sk_buff *msg,
4393 struct cfg80211_registered_device *rdev,
4394 struct net_device *netdev,
4395 u32 pid, u32 seq, int flags,
4400 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
4404 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4405 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4407 /* ignore errors and send incomplete event anyway */
4408 nl80211_add_scan_req(msg, rdev);
4410 return genlmsg_end(msg, hdr);
4413 genlmsg_cancel(msg, hdr);
4417 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
4418 struct net_device *netdev)
4420 struct sk_buff *msg;
4422 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
4426 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
4427 NL80211_CMD_TRIGGER_SCAN) < 0) {
4432 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4433 nl80211_scan_mcgrp.id, GFP_KERNEL);
4436 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
4437 struct net_device *netdev)
4439 struct sk_buff *msg;
4441 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4445 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
4446 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
4451 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4452 nl80211_scan_mcgrp.id, GFP_KERNEL);
4455 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
4456 struct net_device *netdev)
4458 struct sk_buff *msg;
4460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4464 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
4465 NL80211_CMD_SCAN_ABORTED) < 0) {
4470 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4471 nl80211_scan_mcgrp.id, GFP_KERNEL);
4475 * This can happen on global regulatory changes or device specific settings
4476 * based on custom world regulatory domains.
4478 void nl80211_send_reg_change_event(struct regulatory_request *request)
4480 struct sk_buff *msg;
4483 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4487 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
4493 /* Userspace can always count this one always being set */
4494 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
4496 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
4497 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
4498 NL80211_REGDOM_TYPE_WORLD);
4499 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
4500 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
4501 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
4502 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
4504 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
4505 NL80211_REGDOM_TYPE_INTERSECTION);
4507 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
4508 NL80211_REGDOM_TYPE_COUNTRY);
4509 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
4512 if (wiphy_idx_valid(request->wiphy_idx))
4513 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
4515 if (genlmsg_end(msg, hdr) < 0) {
4521 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
4528 genlmsg_cancel(msg, hdr);
4532 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
4533 struct net_device *netdev,
4534 const u8 *buf, size_t len,
4535 enum nl80211_commands cmd, gfp_t gfp)
4537 struct sk_buff *msg;
4540 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
4544 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
4550 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4551 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4552 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
4554 if (genlmsg_end(msg, hdr) < 0) {
4559 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4560 nl80211_mlme_mcgrp.id, gfp);
4564 genlmsg_cancel(msg, hdr);
4568 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
4569 struct net_device *netdev, const u8 *buf,
4570 size_t len, gfp_t gfp)
4572 nl80211_send_mlme_event(rdev, netdev, buf, len,
4573 NL80211_CMD_AUTHENTICATE, gfp);
4576 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
4577 struct net_device *netdev, const u8 *buf,
4578 size_t len, gfp_t gfp)
4580 nl80211_send_mlme_event(rdev, netdev, buf, len,
4581 NL80211_CMD_ASSOCIATE, gfp);
4584 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
4585 struct net_device *netdev, const u8 *buf,
4586 size_t len, gfp_t gfp)
4588 nl80211_send_mlme_event(rdev, netdev, buf, len,
4589 NL80211_CMD_DEAUTHENTICATE, gfp);
4592 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
4593 struct net_device *netdev, const u8 *buf,
4594 size_t len, gfp_t gfp)
4596 nl80211_send_mlme_event(rdev, netdev, buf, len,
4597 NL80211_CMD_DISASSOCIATE, gfp);
4600 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
4601 struct net_device *netdev, int cmd,
4602 const u8 *addr, gfp_t gfp)
4604 struct sk_buff *msg;
4607 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
4611 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
4617 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4618 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4619 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
4620 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4622 if (genlmsg_end(msg, hdr) < 0) {
4627 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4628 nl80211_mlme_mcgrp.id, gfp);
4632 genlmsg_cancel(msg, hdr);
4636 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
4637 struct net_device *netdev, const u8 *addr,
4640 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
4644 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
4645 struct net_device *netdev, const u8 *addr,
4648 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
4652 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
4653 struct net_device *netdev, const u8 *bssid,
4654 const u8 *req_ie, size_t req_ie_len,
4655 const u8 *resp_ie, size_t resp_ie_len,
4656 u16 status, gfp_t gfp)
4658 struct sk_buff *msg;
4661 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
4665 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
4671 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4672 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4674 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
4675 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
4677 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
4679 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
4681 if (genlmsg_end(msg, hdr) < 0) {
4686 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4687 nl80211_mlme_mcgrp.id, gfp);
4691 genlmsg_cancel(msg, hdr);
4696 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
4697 struct net_device *netdev, const u8 *bssid,
4698 const u8 *req_ie, size_t req_ie_len,
4699 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
4701 struct sk_buff *msg;
4704 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
4708 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
4714 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4715 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4716 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
4718 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
4720 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
4722 if (genlmsg_end(msg, hdr) < 0) {
4727 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4728 nl80211_mlme_mcgrp.id, gfp);
4732 genlmsg_cancel(msg, hdr);
4737 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
4738 struct net_device *netdev, u16 reason,
4739 const u8 *ie, size_t ie_len, bool from_ap)
4741 struct sk_buff *msg;
4744 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
4748 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
4754 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4755 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4756 if (from_ap && reason)
4757 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
4759 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
4761 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
4763 if (genlmsg_end(msg, hdr) < 0) {
4768 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4769 nl80211_mlme_mcgrp.id, GFP_KERNEL);
4773 genlmsg_cancel(msg, hdr);
4778 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
4779 struct net_device *netdev, const u8 *bssid,
4782 struct sk_buff *msg;
4785 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
4789 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
4795 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4796 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4797 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
4799 if (genlmsg_end(msg, hdr) < 0) {
4804 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4805 nl80211_mlme_mcgrp.id, gfp);
4809 genlmsg_cancel(msg, hdr);
4813 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
4814 struct net_device *netdev, const u8 *addr,
4815 enum nl80211_key_type key_type, int key_id,
4816 const u8 *tsc, gfp_t gfp)
4818 struct sk_buff *msg;
4821 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
4825 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
4831 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4832 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4834 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4835 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
4836 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
4838 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
4840 if (genlmsg_end(msg, hdr) < 0) {
4845 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4846 nl80211_mlme_mcgrp.id, gfp);
4850 genlmsg_cancel(msg, hdr);
4854 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
4855 struct ieee80211_channel *channel_before,
4856 struct ieee80211_channel *channel_after)
4858 struct sk_buff *msg;
4860 struct nlattr *nl_freq;
4862 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
4866 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
4873 * Since we are applying the beacon hint to a wiphy we know its
4874 * wiphy_idx is valid
4876 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
4879 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
4881 goto nla_put_failure;
4882 if (nl80211_msg_put_channel(msg, channel_before))
4883 goto nla_put_failure;
4884 nla_nest_end(msg, nl_freq);
4887 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
4889 goto nla_put_failure;
4890 if (nl80211_msg_put_channel(msg, channel_after))
4891 goto nla_put_failure;
4892 nla_nest_end(msg, nl_freq);
4894 if (genlmsg_end(msg, hdr) < 0) {
4900 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
4907 genlmsg_cancel(msg, hdr);
4911 /* initialisation/exit functions */
4913 int nl80211_init(void)
4917 err = genl_register_family_with_ops(&nl80211_fam,
4918 nl80211_ops, ARRAY_SIZE(nl80211_ops));
4922 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
4926 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
4930 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
4934 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
4938 #ifdef CONFIG_NL80211_TESTMODE
4939 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
4946 genl_unregister_family(&nl80211_fam);
4950 void nl80211_exit(void)
4952 genl_unregister_family(&nl80211_fam);