2 * This is the new netlink-based wireless configuration interface.
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
8 #include <linux/module.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
26 /* the netlink family */
27 static struct genl_family nl80211_fam = {
28 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
29 .name = "nl80211", /* have users key off the name instead */
30 .hdrsize = 0, /* no private header */
31 .version = 1, /* no particular meaning now */
32 .maxattr = NL80211_ATTR_MAX,
36 /* internal helper: get rdev and dev */
37 static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
38 struct cfg80211_registered_device **rdev,
39 struct net_device **dev)
41 struct nlattr **attrs = info->attrs;
44 if (!attrs[NL80211_ATTR_IFINDEX])
47 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
48 *dev = dev_get_by_index(genl_info_net(info), ifindex);
52 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
55 return PTR_ERR(*rdev);
61 /* policy for the attributes */
62 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
63 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
64 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
66 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
67 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
68 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
69 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
70 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
71 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
72 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
73 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
75 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
76 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
77 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
79 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
80 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
82 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
83 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
84 .len = WLAN_MAX_KEY_LEN },
85 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
86 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
87 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
88 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
90 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
91 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
92 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
93 .len = IEEE80211_MAX_DATA_LEN },
94 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
95 .len = IEEE80211_MAX_DATA_LEN },
96 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
97 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
98 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
99 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
100 .len = NL80211_MAX_SUPP_RATES },
101 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
102 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
103 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
104 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
105 .len = IEEE80211_MAX_MESH_ID_LEN },
106 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
108 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
109 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
111 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
112 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
113 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
114 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
115 .len = NL80211_MAX_SUPP_RATES },
117 [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
119 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
120 .len = NL80211_HT_CAPABILITY_LEN },
122 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
123 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
124 .len = IEEE80211_MAX_DATA_LEN },
125 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
126 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
128 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
129 .len = IEEE80211_MAX_SSID_LEN },
130 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
131 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
132 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
133 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
134 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
135 [NL80211_ATTR_STA_FLAGS2] = {
136 .len = sizeof(struct nl80211_sta_flag_update),
138 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
139 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
140 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
141 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
142 [NL80211_ATTR_PID] = { .type = NLA_U32 },
143 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
144 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
145 .len = WLAN_PMKID_LEN },
146 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
147 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
148 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
149 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
150 .len = IEEE80211_MAX_DATA_LEN },
151 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
152 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
155 /* policy for the attributes */
156 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
157 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
158 [NL80211_KEY_IDX] = { .type = NLA_U8 },
159 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
160 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
161 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
162 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
165 /* ifidx get helper */
166 static int nl80211_get_ifidx(struct netlink_callback *cb)
170 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
171 nl80211_fam.attrbuf, nl80211_fam.maxattr,
176 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
179 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
186 static bool is_valid_ie_attr(const struct nlattr *attr)
194 pos = nla_data(attr);
215 /* message building helper */
216 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
219 /* since there is no private header just add the generic one */
220 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
223 static int nl80211_msg_put_channel(struct sk_buff *msg,
224 struct ieee80211_channel *chan)
226 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
229 if (chan->flags & IEEE80211_CHAN_DISABLED)
230 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
231 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
232 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
233 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
234 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
235 if (chan->flags & IEEE80211_CHAN_RADAR)
236 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
238 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
239 DBM_TO_MBM(chan->max_power));
247 /* netlink command implementations */
255 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
257 struct nlattr *tb[NL80211_KEY_MAX + 1];
258 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
263 k->def = !!tb[NL80211_KEY_DEFAULT];
264 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
266 if (tb[NL80211_KEY_IDX])
267 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
269 if (tb[NL80211_KEY_DATA]) {
270 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
271 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
274 if (tb[NL80211_KEY_SEQ]) {
275 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
276 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
279 if (tb[NL80211_KEY_CIPHER])
280 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
285 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
287 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
288 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
289 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
292 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
293 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
294 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
297 if (info->attrs[NL80211_ATTR_KEY_IDX])
298 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
300 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
301 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
303 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
304 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
309 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
313 memset(k, 0, sizeof(*k));
316 if (info->attrs[NL80211_ATTR_KEY])
317 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
319 err = nl80211_parse_key_old(info, k);
324 if (k->def && k->defmgmt)
329 if (k->idx < 4 || k->idx > 5)
332 if (k->idx < 0 || k->idx > 3)
335 if (k->idx < 0 || k->idx > 5)
343 static struct cfg80211_cached_keys *
344 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
347 struct key_parse parse;
349 struct cfg80211_cached_keys *result;
350 int rem, err, def = 0;
352 result = kzalloc(sizeof(*result), GFP_KERNEL);
354 return ERR_PTR(-ENOMEM);
357 result->defmgmt = -1;
359 nla_for_each_nested(key, keys, rem) {
360 memset(&parse, 0, sizeof(parse));
363 err = nl80211_parse_key_new(key, &parse);
369 if (parse.idx < 0 || parse.idx > 4)
375 result->def = parse.idx;
376 } else if (parse.defmgmt)
378 err = cfg80211_validate_key_settings(rdev, &parse.p,
382 result->params[parse.idx].cipher = parse.p.cipher;
383 result->params[parse.idx].key_len = parse.p.key_len;
384 result->params[parse.idx].key = result->data[parse.idx];
385 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
394 static int nl80211_key_allowed(struct wireless_dev *wdev)
396 ASSERT_WDEV_LOCK(wdev);
398 if (!netif_running(wdev->netdev))
401 switch (wdev->iftype) {
402 case NL80211_IFTYPE_AP:
403 case NL80211_IFTYPE_AP_VLAN:
405 case NL80211_IFTYPE_ADHOC:
406 if (!wdev->current_bss)
409 case NL80211_IFTYPE_STATION:
410 if (wdev->sme_state != CFG80211_SME_CONNECTED)
420 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
421 struct cfg80211_registered_device *dev)
424 struct nlattr *nl_bands, *nl_band;
425 struct nlattr *nl_freqs, *nl_freq;
426 struct nlattr *nl_rates, *nl_rate;
427 struct nlattr *nl_modes;
428 struct nlattr *nl_cmds;
429 enum ieee80211_band band;
430 struct ieee80211_channel *chan;
431 struct ieee80211_rate *rate;
433 u16 ifmodes = dev->wiphy.interface_modes;
435 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
439 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
440 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
442 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
443 cfg80211_rdev_list_generation);
445 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
446 dev->wiphy.retry_short);
447 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
448 dev->wiphy.retry_long);
449 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
450 dev->wiphy.frag_threshold);
451 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
452 dev->wiphy.rts_threshold);
453 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
454 dev->wiphy.coverage_class);
456 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
457 dev->wiphy.max_scan_ssids);
458 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
459 dev->wiphy.max_scan_ie_len);
461 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
462 sizeof(u32) * dev->wiphy.n_cipher_suites,
463 dev->wiphy.cipher_suites);
465 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
466 dev->wiphy.max_num_pmkids);
468 nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
470 goto nla_put_failure;
475 NLA_PUT_FLAG(msg, i);
480 nla_nest_end(msg, nl_modes);
482 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
484 goto nla_put_failure;
486 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
487 if (!dev->wiphy.bands[band])
490 nl_band = nla_nest_start(msg, band);
492 goto nla_put_failure;
495 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
496 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
497 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
498 &dev->wiphy.bands[band]->ht_cap.mcs);
499 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
500 dev->wiphy.bands[band]->ht_cap.cap);
501 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
502 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
503 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
504 dev->wiphy.bands[band]->ht_cap.ampdu_density);
507 /* add frequencies */
508 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
510 goto nla_put_failure;
512 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
513 nl_freq = nla_nest_start(msg, i);
515 goto nla_put_failure;
517 chan = &dev->wiphy.bands[band]->channels[i];
519 if (nl80211_msg_put_channel(msg, chan))
520 goto nla_put_failure;
522 nla_nest_end(msg, nl_freq);
525 nla_nest_end(msg, nl_freqs);
528 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
530 goto nla_put_failure;
532 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
533 nl_rate = nla_nest_start(msg, i);
535 goto nla_put_failure;
537 rate = &dev->wiphy.bands[band]->bitrates[i];
538 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
540 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
542 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
544 nla_nest_end(msg, nl_rate);
547 nla_nest_end(msg, nl_rates);
549 nla_nest_end(msg, nl_band);
551 nla_nest_end(msg, nl_bands);
553 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
555 goto nla_put_failure;
560 if (dev->ops->op) { \
562 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
566 CMD(add_virtual_intf, NEW_INTERFACE);
567 CMD(change_virtual_intf, SET_INTERFACE);
568 CMD(add_key, NEW_KEY);
569 CMD(add_beacon, NEW_BEACON);
570 CMD(add_station, NEW_STATION);
571 CMD(add_mpath, NEW_MPATH);
572 CMD(set_mesh_params, SET_MESH_PARAMS);
573 CMD(change_bss, SET_BSS);
574 CMD(auth, AUTHENTICATE);
575 CMD(assoc, ASSOCIATE);
576 CMD(deauth, DEAUTHENTICATE);
577 CMD(disassoc, DISASSOCIATE);
578 CMD(join_ibss, JOIN_IBSS);
579 CMD(set_pmksa, SET_PMKSA);
580 CMD(del_pmksa, DEL_PMKSA);
581 CMD(flush_pmksa, FLUSH_PMKSA);
582 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
583 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
585 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
587 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
592 if (dev->ops->connect || dev->ops->auth) {
594 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
597 if (dev->ops->disconnect || dev->ops->deauth) {
599 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
602 nla_nest_end(msg, nl_cmds);
604 return genlmsg_end(msg, hdr);
607 genlmsg_cancel(msg, hdr);
611 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
614 int start = cb->args[0];
615 struct cfg80211_registered_device *dev;
617 mutex_lock(&cfg80211_mutex);
618 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
619 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
623 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
624 cb->nlh->nlmsg_seq, NLM_F_MULTI,
630 mutex_unlock(&cfg80211_mutex);
637 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
640 struct cfg80211_registered_device *dev;
642 dev = cfg80211_get_dev_from_info(info);
646 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
650 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
653 cfg80211_unlock_rdev(dev);
655 return genlmsg_reply(msg, info);
660 cfg80211_unlock_rdev(dev);
664 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
665 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
666 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
667 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
668 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
669 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
672 static int parse_txq_params(struct nlattr *tb[],
673 struct ieee80211_txq_params *txq_params)
675 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
676 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
677 !tb[NL80211_TXQ_ATTR_AIFS])
680 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
681 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
682 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
683 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
684 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
689 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
691 struct cfg80211_registered_device *rdev;
692 int result = 0, rem_txq_params = 0;
693 struct nlattr *nl_txq_params;
695 u8 retry_short = 0, retry_long = 0;
696 u32 frag_threshold = 0, rts_threshold = 0;
697 u8 coverage_class = 0;
701 mutex_lock(&cfg80211_mutex);
703 rdev = __cfg80211_rdev_from_info(info);
705 mutex_unlock(&cfg80211_mutex);
706 result = PTR_ERR(rdev);
710 mutex_lock(&rdev->mtx);
712 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
713 result = cfg80211_dev_rename(
714 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
716 mutex_unlock(&cfg80211_mutex);
721 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
722 struct ieee80211_txq_params txq_params;
723 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
725 if (!rdev->ops->set_txq_params) {
726 result = -EOPNOTSUPP;
730 nla_for_each_nested(nl_txq_params,
731 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
733 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
734 nla_data(nl_txq_params),
735 nla_len(nl_txq_params),
737 result = parse_txq_params(tb, &txq_params);
741 result = rdev->ops->set_txq_params(&rdev->wiphy,
748 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
749 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
754 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
755 channel_type = nla_get_u32(info->attrs[
756 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
757 if (channel_type != NL80211_CHAN_NO_HT &&
758 channel_type != NL80211_CHAN_HT20 &&
759 channel_type != NL80211_CHAN_HT40PLUS &&
760 channel_type != NL80211_CHAN_HT40MINUS)
764 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
766 mutex_lock(&rdev->devlist_mtx);
767 result = rdev_set_freq(rdev, NULL, freq, channel_type);
768 mutex_unlock(&rdev->devlist_mtx);
775 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
776 retry_short = nla_get_u8(
777 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
778 if (retry_short == 0) {
782 changed |= WIPHY_PARAM_RETRY_SHORT;
785 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
786 retry_long = nla_get_u8(
787 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
788 if (retry_long == 0) {
792 changed |= WIPHY_PARAM_RETRY_LONG;
795 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
796 frag_threshold = nla_get_u32(
797 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
798 if (frag_threshold < 256) {
802 if (frag_threshold != (u32) -1) {
804 * Fragments (apart from the last one) are required to
805 * have even length. Make the fragmentation code
806 * simpler by stripping LSB should someone try to use
807 * odd threshold value.
809 frag_threshold &= ~0x1;
811 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
814 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
815 rts_threshold = nla_get_u32(
816 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
817 changed |= WIPHY_PARAM_RTS_THRESHOLD;
820 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
821 coverage_class = nla_get_u8(
822 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
823 changed |= WIPHY_PARAM_COVERAGE_CLASS;
827 u8 old_retry_short, old_retry_long;
828 u32 old_frag_threshold, old_rts_threshold;
829 u8 old_coverage_class;
831 if (!rdev->ops->set_wiphy_params) {
832 result = -EOPNOTSUPP;
836 old_retry_short = rdev->wiphy.retry_short;
837 old_retry_long = rdev->wiphy.retry_long;
838 old_frag_threshold = rdev->wiphy.frag_threshold;
839 old_rts_threshold = rdev->wiphy.rts_threshold;
840 old_coverage_class = rdev->wiphy.coverage_class;
842 if (changed & WIPHY_PARAM_RETRY_SHORT)
843 rdev->wiphy.retry_short = retry_short;
844 if (changed & WIPHY_PARAM_RETRY_LONG)
845 rdev->wiphy.retry_long = retry_long;
846 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
847 rdev->wiphy.frag_threshold = frag_threshold;
848 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
849 rdev->wiphy.rts_threshold = rts_threshold;
850 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
851 rdev->wiphy.coverage_class = coverage_class;
853 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
855 rdev->wiphy.retry_short = old_retry_short;
856 rdev->wiphy.retry_long = old_retry_long;
857 rdev->wiphy.frag_threshold = old_frag_threshold;
858 rdev->wiphy.rts_threshold = old_rts_threshold;
859 rdev->wiphy.coverage_class = old_coverage_class;
864 mutex_unlock(&rdev->mtx);
871 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
872 struct cfg80211_registered_device *rdev,
873 struct net_device *dev)
877 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
881 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
882 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
883 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
884 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
886 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
887 rdev->devlist_generation ^
888 (cfg80211_rdev_list_generation << 2));
890 return genlmsg_end(msg, hdr);
893 genlmsg_cancel(msg, hdr);
897 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
901 int wp_start = cb->args[0];
902 int if_start = cb->args[1];
903 struct cfg80211_registered_device *rdev;
904 struct wireless_dev *wdev;
906 mutex_lock(&cfg80211_mutex);
907 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
908 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
910 if (wp_idx < wp_start) {
916 mutex_lock(&rdev->devlist_mtx);
917 list_for_each_entry(wdev, &rdev->netdev_list, list) {
918 if (if_idx < if_start) {
922 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
923 cb->nlh->nlmsg_seq, NLM_F_MULTI,
924 rdev, wdev->netdev) < 0) {
925 mutex_unlock(&rdev->devlist_mtx);
930 mutex_unlock(&rdev->devlist_mtx);
935 mutex_unlock(&cfg80211_mutex);
937 cb->args[0] = wp_idx;
938 cb->args[1] = if_idx;
943 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
946 struct cfg80211_registered_device *dev;
947 struct net_device *netdev;
950 err = get_rdev_dev_by_info_ifindex(info, &dev, &netdev);
954 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
958 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
963 cfg80211_unlock_rdev(dev);
965 return genlmsg_reply(msg, info);
971 cfg80211_unlock_rdev(dev);
975 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
976 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
977 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
978 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
979 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
980 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
983 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
985 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
993 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
994 nla, mntr_flags_policy))
997 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
999 *mntrflags |= (1<<flag);
1004 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1005 struct net_device *netdev, u8 use_4addr,
1006 enum nl80211_iftype iftype)
1009 if (netdev && netdev->br_port)
1015 case NL80211_IFTYPE_AP_VLAN:
1016 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1019 case NL80211_IFTYPE_STATION:
1020 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1030 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1032 struct cfg80211_registered_device *rdev;
1033 struct vif_params params;
1035 enum nl80211_iftype otype, ntype;
1036 struct net_device *dev;
1037 u32 _flags, *flags = NULL;
1038 bool change = false;
1040 memset(¶ms, 0, sizeof(params));
1044 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1048 otype = ntype = dev->ieee80211_ptr->iftype;
1050 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1051 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1054 if (ntype > NL80211_IFTYPE_MAX) {
1060 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1061 if (ntype != NL80211_IFTYPE_MESH_POINT) {
1065 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
1066 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1070 if (info->attrs[NL80211_ATTR_4ADDR]) {
1071 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1073 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1077 params.use_4addr = -1;
1080 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1081 if (ntype != NL80211_IFTYPE_MONITOR) {
1085 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1095 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms);
1099 if (!err && params.use_4addr != -1)
1100 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1104 cfg80211_unlock_rdev(rdev);
1110 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1112 struct cfg80211_registered_device *rdev;
1113 struct vif_params params;
1115 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1118 memset(¶ms, 0, sizeof(params));
1120 if (!info->attrs[NL80211_ATTR_IFNAME])
1123 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1124 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1125 if (type > NL80211_IFTYPE_MAX)
1131 rdev = cfg80211_get_dev_from_info(info);
1133 err = PTR_ERR(rdev);
1137 if (!rdev->ops->add_virtual_intf ||
1138 !(rdev->wiphy.interface_modes & (1 << type))) {
1143 if (type == NL80211_IFTYPE_MESH_POINT &&
1144 info->attrs[NL80211_ATTR_MESH_ID]) {
1145 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
1146 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1149 if (info->attrs[NL80211_ATTR_4ADDR]) {
1150 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1151 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1156 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1157 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1159 err = rdev->ops->add_virtual_intf(&rdev->wiphy,
1160 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1161 type, err ? NULL : &flags, ¶ms);
1164 cfg80211_unlock_rdev(rdev);
1170 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1172 struct cfg80211_registered_device *rdev;
1174 struct net_device *dev;
1178 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1182 if (!rdev->ops->del_virtual_intf) {
1187 err = rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1190 cfg80211_unlock_rdev(rdev);
1197 struct get_key_cookie {
1198 struct sk_buff *msg;
1203 static void get_key_callback(void *c, struct key_params *params)
1206 struct get_key_cookie *cookie = c;
1209 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1210 params->key_len, params->key);
1213 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1214 params->seq_len, params->seq);
1217 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1220 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1222 goto nla_put_failure;
1225 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1226 params->key_len, params->key);
1229 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1230 params->seq_len, params->seq);
1233 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1236 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1238 nla_nest_end(cookie->msg, key);
1245 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1247 struct cfg80211_registered_device *rdev;
1249 struct net_device *dev;
1251 u8 *mac_addr = NULL;
1252 struct get_key_cookie cookie = {
1256 struct sk_buff *msg;
1258 if (info->attrs[NL80211_ATTR_KEY_IDX])
1259 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1264 if (info->attrs[NL80211_ATTR_MAC])
1265 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1269 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1273 if (!rdev->ops->get_key) {
1278 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1284 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1285 NL80211_CMD_NEW_KEY);
1293 cookie.idx = key_idx;
1295 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1296 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1298 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1300 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, mac_addr,
1301 &cookie, get_key_callback);
1307 goto nla_put_failure;
1309 genlmsg_end(msg, hdr);
1310 err = genlmsg_reply(msg, info);
1318 cfg80211_unlock_rdev(rdev);
1326 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1328 struct cfg80211_registered_device *rdev;
1329 struct key_parse key;
1331 struct net_device *dev;
1332 int (*func)(struct wiphy *wiphy, struct net_device *netdev,
1335 err = nl80211_parse_key(info, &key);
1342 /* only support setting default key */
1343 if (!key.def && !key.defmgmt)
1348 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1353 func = rdev->ops->set_default_key;
1355 func = rdev->ops->set_default_mgmt_key;
1362 wdev_lock(dev->ieee80211_ptr);
1363 err = nl80211_key_allowed(dev->ieee80211_ptr);
1365 err = func(&rdev->wiphy, dev, key.idx);
1367 #ifdef CONFIG_CFG80211_WEXT
1369 if (func == rdev->ops->set_default_key)
1370 dev->ieee80211_ptr->wext.default_key = key.idx;
1372 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1375 wdev_unlock(dev->ieee80211_ptr);
1378 cfg80211_unlock_rdev(rdev);
1387 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1389 struct cfg80211_registered_device *rdev;
1391 struct net_device *dev;
1392 struct key_parse key;
1393 u8 *mac_addr = NULL;
1395 err = nl80211_parse_key(info, &key);
1402 if (info->attrs[NL80211_ATTR_MAC])
1403 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1407 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1411 if (!rdev->ops->add_key) {
1416 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, mac_addr)) {
1421 wdev_lock(dev->ieee80211_ptr);
1422 err = nl80211_key_allowed(dev->ieee80211_ptr);
1424 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1426 wdev_unlock(dev->ieee80211_ptr);
1429 cfg80211_unlock_rdev(rdev);
1437 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1439 struct cfg80211_registered_device *rdev;
1441 struct net_device *dev;
1442 u8 *mac_addr = NULL;
1443 struct key_parse key;
1445 err = nl80211_parse_key(info, &key);
1449 if (info->attrs[NL80211_ATTR_MAC])
1450 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1454 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1458 if (!rdev->ops->del_key) {
1463 wdev_lock(dev->ieee80211_ptr);
1464 err = nl80211_key_allowed(dev->ieee80211_ptr);
1466 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx, mac_addr);
1468 #ifdef CONFIG_CFG80211_WEXT
1470 if (key.idx == dev->ieee80211_ptr->wext.default_key)
1471 dev->ieee80211_ptr->wext.default_key = -1;
1472 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1473 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1476 wdev_unlock(dev->ieee80211_ptr);
1479 cfg80211_unlock_rdev(rdev);
1488 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1490 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1491 struct beacon_parameters *info);
1492 struct cfg80211_registered_device *rdev;
1494 struct net_device *dev;
1495 struct beacon_parameters params;
1498 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1503 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1507 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1512 switch (info->genlhdr->cmd) {
1513 case NL80211_CMD_NEW_BEACON:
1514 /* these are required for NEW_BEACON */
1515 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1516 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1517 !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1522 call = rdev->ops->add_beacon;
1524 case NL80211_CMD_SET_BEACON:
1525 call = rdev->ops->set_beacon;
1538 memset(¶ms, 0, sizeof(params));
1540 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
1542 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1546 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
1547 params.dtim_period =
1548 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1552 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1553 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1555 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1559 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1560 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1562 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1571 err = call(&rdev->wiphy, dev, ¶ms);
1574 cfg80211_unlock_rdev(rdev);
1582 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1584 struct cfg80211_registered_device *rdev;
1586 struct net_device *dev;
1590 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1594 if (!rdev->ops->del_beacon) {
1599 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
1603 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
1606 cfg80211_unlock_rdev(rdev);
1614 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
1615 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
1616 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
1617 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
1618 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
1621 static int parse_station_flags(struct genl_info *info,
1622 struct station_parameters *params)
1624 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
1629 * Try parsing the new attribute first so userspace
1630 * can specify both for older kernels.
1632 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
1634 struct nl80211_sta_flag_update *sta_flags;
1636 sta_flags = nla_data(nla);
1637 params->sta_flags_mask = sta_flags->mask;
1638 params->sta_flags_set = sta_flags->set;
1639 if ((params->sta_flags_mask |
1640 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
1645 /* if present, parse the old attribute */
1647 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
1651 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1652 nla, sta_flags_policy))
1655 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
1656 params->sta_flags_mask &= ~1;
1658 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1660 params->sta_flags_set |= (1<<flag);
1665 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1666 int flags, struct net_device *dev,
1667 const u8 *mac_addr, struct station_info *sinfo)
1670 struct nlattr *sinfoattr, *txrate;
1673 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1677 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1678 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1680 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
1682 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1684 goto nla_put_failure;
1685 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
1686 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
1687 sinfo->inactive_time);
1688 if (sinfo->filled & STATION_INFO_RX_BYTES)
1689 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
1691 if (sinfo->filled & STATION_INFO_TX_BYTES)
1692 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1694 if (sinfo->filled & STATION_INFO_LLID)
1695 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
1697 if (sinfo->filled & STATION_INFO_PLID)
1698 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
1700 if (sinfo->filled & STATION_INFO_PLINK_STATE)
1701 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
1702 sinfo->plink_state);
1703 if (sinfo->filled & STATION_INFO_SIGNAL)
1704 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
1706 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
1707 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
1709 goto nla_put_failure;
1711 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
1712 bitrate = cfg80211_calculate_bitrate(&sinfo->txrate);
1714 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
1716 if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
1717 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
1719 if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
1720 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
1721 if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
1722 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
1724 nla_nest_end(msg, txrate);
1726 if (sinfo->filled & STATION_INFO_RX_PACKETS)
1727 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
1729 if (sinfo->filled & STATION_INFO_TX_PACKETS)
1730 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
1732 nla_nest_end(msg, sinfoattr);
1734 return genlmsg_end(msg, hdr);
1737 genlmsg_cancel(msg, hdr);
1741 static int nl80211_dump_station(struct sk_buff *skb,
1742 struct netlink_callback *cb)
1744 struct station_info sinfo;
1745 struct cfg80211_registered_device *dev;
1746 struct net_device *netdev;
1747 u8 mac_addr[ETH_ALEN];
1748 int ifidx = cb->args[0];
1749 int sta_idx = cb->args[1];
1753 ifidx = nl80211_get_ifidx(cb);
1759 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1765 dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
1771 if (!dev->ops->dump_station) {
1777 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
1784 if (nl80211_send_station(skb,
1785 NETLINK_CB(cb->skb).pid,
1786 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1796 cb->args[1] = sta_idx;
1799 cfg80211_unlock_rdev(dev);
1806 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
1808 struct cfg80211_registered_device *rdev;
1810 struct net_device *dev;
1811 struct station_info sinfo;
1812 struct sk_buff *msg;
1813 u8 *mac_addr = NULL;
1815 memset(&sinfo, 0, sizeof(sinfo));
1817 if (!info->attrs[NL80211_ATTR_MAC])
1820 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1824 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1828 if (!rdev->ops->get_station) {
1833 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
1837 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1841 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
1842 dev, mac_addr, &sinfo) < 0)
1845 err = genlmsg_reply(msg, info);
1851 cfg80211_unlock_rdev(rdev);
1860 * Get vlan interface making sure it is running and on the right wiphy.
1862 static int get_vlan(struct genl_info *info,
1863 struct cfg80211_registered_device *rdev,
1864 struct net_device **vlan)
1866 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
1870 *vlan = dev_get_by_index(genl_info_net(info),
1871 nla_get_u32(vlanattr));
1874 if (!(*vlan)->ieee80211_ptr)
1876 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
1878 if (!netif_running(*vlan))
1884 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
1886 struct cfg80211_registered_device *rdev;
1888 struct net_device *dev;
1889 struct station_parameters params;
1890 u8 *mac_addr = NULL;
1892 memset(¶ms, 0, sizeof(params));
1894 params.listen_interval = -1;
1896 if (info->attrs[NL80211_ATTR_STA_AID])
1899 if (!info->attrs[NL80211_ATTR_MAC])
1902 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1904 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
1905 params.supported_rates =
1906 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1907 params.supported_rates_len =
1908 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
1911 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
1912 params.listen_interval =
1913 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
1915 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
1917 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
1919 if (parse_station_flags(info, ¶ms))
1922 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
1923 params.plink_action =
1924 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
1928 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
1932 err = get_vlan(info, rdev, ¶ms.vlan);
1936 /* validate settings */
1939 switch (dev->ieee80211_ptr->iftype) {
1940 case NL80211_IFTYPE_AP:
1941 case NL80211_IFTYPE_AP_VLAN:
1942 /* disallow mesh-specific things */
1943 if (params.plink_action)
1946 case NL80211_IFTYPE_STATION:
1947 /* disallow everything but AUTHORIZED flag */
1948 if (params.plink_action)
1952 if (params.supported_rates)
1956 if (params.listen_interval >= 0)
1958 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
1961 case NL80211_IFTYPE_MESH_POINT:
1962 /* disallow things mesh doesn't support */
1967 if (params.listen_interval >= 0)
1969 if (params.supported_rates)
1971 if (params.sta_flags_mask)
1981 if (!rdev->ops->change_station) {
1986 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, ¶ms);
1990 dev_put(params.vlan);
1991 cfg80211_unlock_rdev(rdev);
1999 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2001 struct cfg80211_registered_device *rdev;
2003 struct net_device *dev;
2004 struct station_parameters params;
2005 u8 *mac_addr = NULL;
2007 memset(¶ms, 0, sizeof(params));
2009 if (!info->attrs[NL80211_ATTR_MAC])
2012 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2015 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2018 if (!info->attrs[NL80211_ATTR_STA_AID])
2021 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2022 params.supported_rates =
2023 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2024 params.supported_rates_len =
2025 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2026 params.listen_interval =
2027 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2029 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2030 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2033 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2035 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2037 if (parse_station_flags(info, ¶ms))
2042 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2046 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2047 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN) {
2052 err = get_vlan(info, rdev, ¶ms.vlan);
2056 /* validate settings */
2059 if (!rdev->ops->add_station) {
2064 if (!netif_running(dev)) {
2069 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, ¶ms);
2073 dev_put(params.vlan);
2074 cfg80211_unlock_rdev(rdev);
2082 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2084 struct cfg80211_registered_device *rdev;
2086 struct net_device *dev;
2087 u8 *mac_addr = NULL;
2089 if (info->attrs[NL80211_ATTR_MAC])
2090 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2094 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2098 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2099 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN) {
2104 if (!rdev->ops->del_station) {
2109 err = rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2112 cfg80211_unlock_rdev(rdev);
2120 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2121 int flags, struct net_device *dev,
2122 u8 *dst, u8 *next_hop,
2123 struct mpath_info *pinfo)
2126 struct nlattr *pinfoattr;
2128 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2132 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2133 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2134 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2136 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2138 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2140 goto nla_put_failure;
2141 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2142 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2144 if (pinfo->filled & MPATH_INFO_SN)
2145 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2147 if (pinfo->filled & MPATH_INFO_METRIC)
2148 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2150 if (pinfo->filled & MPATH_INFO_EXPTIME)
2151 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2153 if (pinfo->filled & MPATH_INFO_FLAGS)
2154 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2156 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2157 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2158 pinfo->discovery_timeout);
2159 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2160 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2161 pinfo->discovery_retries);
2163 nla_nest_end(msg, pinfoattr);
2165 return genlmsg_end(msg, hdr);
2168 genlmsg_cancel(msg, hdr);
2172 static int nl80211_dump_mpath(struct sk_buff *skb,
2173 struct netlink_callback *cb)
2175 struct mpath_info pinfo;
2176 struct cfg80211_registered_device *dev;
2177 struct net_device *netdev;
2179 u8 next_hop[ETH_ALEN];
2180 int ifidx = cb->args[0];
2181 int path_idx = cb->args[1];
2185 ifidx = nl80211_get_ifidx(cb);
2191 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2197 dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
2203 if (!dev->ops->dump_mpath) {
2208 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2214 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2215 dst, next_hop, &pinfo);
2221 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2222 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2223 netdev, dst, next_hop,
2232 cb->args[1] = path_idx;
2235 cfg80211_unlock_rdev(dev);
2242 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2244 struct cfg80211_registered_device *rdev;
2246 struct net_device *dev;
2247 struct mpath_info pinfo;
2248 struct sk_buff *msg;
2250 u8 next_hop[ETH_ALEN];
2252 memset(&pinfo, 0, sizeof(pinfo));
2254 if (!info->attrs[NL80211_ATTR_MAC])
2257 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2261 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2265 if (!rdev->ops->get_mpath) {
2270 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2275 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2279 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2283 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2284 dev, dst, next_hop, &pinfo) < 0)
2287 err = genlmsg_reply(msg, info);
2293 cfg80211_unlock_rdev(rdev);
2301 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2303 struct cfg80211_registered_device *rdev;
2305 struct net_device *dev;
2307 u8 *next_hop = NULL;
2309 if (!info->attrs[NL80211_ATTR_MAC])
2312 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2315 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2316 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2320 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2324 if (!rdev->ops->change_mpath) {
2329 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2334 if (!netif_running(dev)) {
2339 err = rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2342 cfg80211_unlock_rdev(rdev);
2349 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2351 struct cfg80211_registered_device *rdev;
2353 struct net_device *dev;
2355 u8 *next_hop = NULL;
2357 if (!info->attrs[NL80211_ATTR_MAC])
2360 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2363 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2364 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2368 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2372 if (!rdev->ops->add_mpath) {
2377 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2382 if (!netif_running(dev)) {
2387 err = rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2390 cfg80211_unlock_rdev(rdev);
2398 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2400 struct cfg80211_registered_device *rdev;
2402 struct net_device *dev;
2405 if (info->attrs[NL80211_ATTR_MAC])
2406 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2410 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2414 if (!rdev->ops->del_mpath) {
2419 err = rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2422 cfg80211_unlock_rdev(rdev);
2430 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2432 struct cfg80211_registered_device *rdev;
2434 struct net_device *dev;
2435 struct bss_parameters params;
2437 memset(¶ms, 0, sizeof(params));
2438 /* default to not changing parameters */
2439 params.use_cts_prot = -1;
2440 params.use_short_preamble = -1;
2441 params.use_short_slot_time = -1;
2443 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2444 params.use_cts_prot =
2445 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2446 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2447 params.use_short_preamble =
2448 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2449 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2450 params.use_short_slot_time =
2451 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2452 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2453 params.basic_rates =
2454 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2455 params.basic_rates_len =
2456 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2461 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2465 if (!rdev->ops->change_bss) {
2470 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
2475 err = rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms);
2478 cfg80211_unlock_rdev(rdev);
2486 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2487 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2488 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2489 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2490 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2491 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2492 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2495 static int parse_reg_rule(struct nlattr *tb[],
2496 struct ieee80211_reg_rule *reg_rule)
2498 struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
2499 struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
2501 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2503 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2505 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2507 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2509 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2512 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2514 freq_range->start_freq_khz =
2515 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2516 freq_range->end_freq_khz =
2517 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2518 freq_range->max_bandwidth_khz =
2519 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2521 power_rule->max_eirp =
2522 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2524 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2525 power_rule->max_antenna_gain =
2526 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2531 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2537 * You should only get this when cfg80211 hasn't yet initialized
2538 * completely when built-in to the kernel right between the time
2539 * window between nl80211_init() and regulatory_init(), if that is
2542 mutex_lock(&cfg80211_mutex);
2543 if (unlikely(!cfg80211_regdomain)) {
2544 mutex_unlock(&cfg80211_mutex);
2545 return -EINPROGRESS;
2547 mutex_unlock(&cfg80211_mutex);
2549 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2552 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2554 r = regulatory_hint_user(data);
2559 static int nl80211_get_mesh_params(struct sk_buff *skb,
2560 struct genl_info *info)
2562 struct cfg80211_registered_device *rdev;
2563 struct mesh_config cur_params;
2565 struct net_device *dev;
2567 struct nlattr *pinfoattr;
2568 struct sk_buff *msg;
2572 /* Look up our device */
2573 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2577 if (!rdev->ops->get_mesh_params) {
2582 /* Get the mesh params */
2583 err = rdev->ops->get_mesh_params(&rdev->wiphy, dev, &cur_params);
2587 /* Draw up a netlink message to send back */
2588 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2593 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2594 NL80211_CMD_GET_MESH_PARAMS);
2596 goto nla_put_failure;
2597 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
2599 goto nla_put_failure;
2600 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2601 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2602 cur_params.dot11MeshRetryTimeout);
2603 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2604 cur_params.dot11MeshConfirmTimeout);
2605 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2606 cur_params.dot11MeshHoldingTimeout);
2607 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2608 cur_params.dot11MeshMaxPeerLinks);
2609 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2610 cur_params.dot11MeshMaxRetries);
2611 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2612 cur_params.dot11MeshTTL);
2613 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2614 cur_params.auto_open_plinks);
2615 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2616 cur_params.dot11MeshHWMPmaxPREQretries);
2617 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2618 cur_params.path_refresh_time);
2619 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2620 cur_params.min_discovery_timeout);
2621 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2622 cur_params.dot11MeshHWMPactivePathTimeout);
2623 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2624 cur_params.dot11MeshHWMPpreqMinInterval);
2625 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2626 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2627 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
2628 cur_params.dot11MeshHWMPRootMode);
2629 nla_nest_end(msg, pinfoattr);
2630 genlmsg_end(msg, hdr);
2631 err = genlmsg_reply(msg, info);
2635 genlmsg_cancel(msg, hdr);
2639 cfg80211_unlock_rdev(rdev);
2647 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2649 if (table[attr_num]) {\
2650 cfg.param = nla_fn(table[attr_num]); \
2651 mask |= (1 << (attr_num - 1)); \
2655 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
2656 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2657 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2658 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2659 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2660 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2661 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2662 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2664 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2665 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2666 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2667 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2668 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2669 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2672 static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
2676 struct cfg80211_registered_device *rdev;
2677 struct net_device *dev;
2678 struct mesh_config cfg;
2679 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2680 struct nlattr *parent_attr;
2682 parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
2685 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2686 parent_attr, nl80211_meshconf_params_policy))
2691 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2695 if (!rdev->ops->set_mesh_params) {
2700 /* This makes sure that there aren't more than 32 mesh config
2701 * parameters (otherwise our bitfield scheme would not work.) */
2702 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2704 /* Fill in the params struct */
2706 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2707 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2708 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2709 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2710 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2711 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2712 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2713 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2714 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2715 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2716 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2717 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2718 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2719 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2720 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2721 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2723 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2724 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2725 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2726 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2728 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2729 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2731 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2732 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2734 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2735 dot11MeshHWMPnetDiameterTraversalTime,
2736 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2738 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2739 dot11MeshHWMPRootMode, mask,
2740 NL80211_MESHCONF_HWMP_ROOTMODE,
2744 err = rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask);
2748 cfg80211_unlock_rdev(rdev);
2756 #undef FILL_IN_MESH_PARAM_IF_SET
2758 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2760 struct sk_buff *msg;
2762 struct nlattr *nl_reg_rules;
2766 mutex_lock(&cfg80211_mutex);
2768 if (!cfg80211_regdomain)
2771 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2777 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2778 NL80211_CMD_GET_REG);
2780 goto nla_put_failure;
2782 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2783 cfg80211_regdomain->alpha2);
2785 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2787 goto nla_put_failure;
2789 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2790 struct nlattr *nl_reg_rule;
2791 const struct ieee80211_reg_rule *reg_rule;
2792 const struct ieee80211_freq_range *freq_range;
2793 const struct ieee80211_power_rule *power_rule;
2795 reg_rule = &cfg80211_regdomain->reg_rules[i];
2796 freq_range = ®_rule->freq_range;
2797 power_rule = ®_rule->power_rule;
2799 nl_reg_rule = nla_nest_start(msg, i);
2801 goto nla_put_failure;
2803 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2805 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2806 freq_range->start_freq_khz);
2807 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2808 freq_range->end_freq_khz);
2809 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2810 freq_range->max_bandwidth_khz);
2811 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
2812 power_rule->max_antenna_gain);
2813 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
2814 power_rule->max_eirp);
2816 nla_nest_end(msg, nl_reg_rule);
2819 nla_nest_end(msg, nl_reg_rules);
2821 genlmsg_end(msg, hdr);
2822 err = genlmsg_reply(msg, info);
2826 genlmsg_cancel(msg, hdr);
2829 mutex_unlock(&cfg80211_mutex);
2833 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
2835 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
2836 struct nlattr *nl_reg_rule;
2837 char *alpha2 = NULL;
2838 int rem_reg_rules = 0, r = 0;
2839 u32 num_rules = 0, rule_idx = 0, size_of_regd;
2840 struct ieee80211_regdomain *rd = NULL;
2842 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2845 if (!info->attrs[NL80211_ATTR_REG_RULES])
2848 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2850 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2853 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
2857 mutex_lock(&cfg80211_mutex);
2859 if (!reg_is_valid_request(alpha2)) {
2864 size_of_regd = sizeof(struct ieee80211_regdomain) +
2865 (num_rules * sizeof(struct ieee80211_reg_rule));
2867 rd = kzalloc(size_of_regd, GFP_KERNEL);
2873 rd->n_reg_rules = num_rules;
2874 rd->alpha2[0] = alpha2[0];
2875 rd->alpha2[1] = alpha2[1];
2877 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2879 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
2880 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
2882 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
2888 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
2894 BUG_ON(rule_idx != num_rules);
2898 mutex_unlock(&cfg80211_mutex);
2903 mutex_unlock(&cfg80211_mutex);
2908 static int validate_scan_freqs(struct nlattr *freqs)
2910 struct nlattr *attr1, *attr2;
2911 int n_channels = 0, tmp1, tmp2;
2913 nla_for_each_nested(attr1, freqs, tmp1) {
2916 * Some hardware has a limited channel list for
2917 * scanning, and it is pretty much nonsensical
2918 * to scan for a channel twice, so disallow that
2919 * and don't require drivers to check that the
2920 * channel list they get isn't longer than what
2921 * they can scan, as long as they can scan all
2922 * the channels they registered at once.
2924 nla_for_each_nested(attr2, freqs, tmp2)
2925 if (attr1 != attr2 &&
2926 nla_get_u32(attr1) == nla_get_u32(attr2))
2933 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
2935 struct cfg80211_registered_device *rdev;
2936 struct net_device *dev;
2937 struct cfg80211_scan_request *request;
2938 struct cfg80211_ssid *ssid;
2939 struct ieee80211_channel *channel;
2940 struct nlattr *attr;
2941 struct wiphy *wiphy;
2942 int err, tmp, n_ssids = 0, n_channels, i;
2943 enum ieee80211_band band;
2946 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2951 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
2955 wiphy = &rdev->wiphy;
2957 if (!rdev->ops->scan) {
2962 if (!netif_running(dev)) {
2967 if (rdev->scan_req) {
2972 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2973 n_channels = validate_scan_freqs(
2974 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
2982 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
2983 if (wiphy->bands[band])
2984 n_channels += wiphy->bands[band]->n_channels;
2987 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
2988 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
2991 if (n_ssids > wiphy->max_scan_ssids) {
2996 if (info->attrs[NL80211_ATTR_IE])
2997 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3001 if (ie_len > wiphy->max_scan_ie_len) {
3006 request = kzalloc(sizeof(*request)
3007 + sizeof(*ssid) * n_ssids
3008 + sizeof(channel) * n_channels
3009 + ie_len, GFP_KERNEL);
3016 request->ssids = (void *)&request->channels[n_channels];
3017 request->n_ssids = n_ssids;
3020 request->ie = (void *)(request->ssids + n_ssids);
3022 request->ie = (void *)(request->channels + n_channels);
3026 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3027 /* user specified, bail out if channel not found */
3028 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3029 struct ieee80211_channel *chan;
3031 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3038 /* ignore disabled channels */
3039 if (chan->flags & IEEE80211_CHAN_DISABLED)
3042 request->channels[i] = chan;
3047 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3049 if (!wiphy->bands[band])
3051 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3052 struct ieee80211_channel *chan;
3054 chan = &wiphy->bands[band]->channels[j];
3056 if (chan->flags & IEEE80211_CHAN_DISABLED)
3059 request->channels[i] = chan;
3070 request->n_channels = i;
3073 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3074 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3075 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
3079 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3080 request->ssids[i].ssid_len = nla_len(attr);
3085 if (info->attrs[NL80211_ATTR_IE]) {
3086 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3087 memcpy((void *)request->ie,
3088 nla_data(info->attrs[NL80211_ATTR_IE]),
3093 request->wiphy = &rdev->wiphy;
3095 rdev->scan_req = request;
3096 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3099 nl80211_send_scan_start(rdev, dev);
3105 rdev->scan_req = NULL;
3109 cfg80211_unlock_rdev(rdev);
3117 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
3118 struct cfg80211_registered_device *rdev,
3119 struct wireless_dev *wdev,
3120 struct cfg80211_internal_bss *intbss)
3122 struct cfg80211_bss *res = &intbss->pub;
3127 ASSERT_WDEV_LOCK(wdev);
3129 hdr = nl80211hdr_put(msg, pid, seq, flags,
3130 NL80211_CMD_NEW_SCAN_RESULTS);
3134 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3135 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3137 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3139 goto nla_put_failure;
3140 if (!is_zero_ether_addr(res->bssid))
3141 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3142 if (res->information_elements && res->len_information_elements)
3143 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3144 res->len_information_elements,
3145 res->information_elements);
3146 if (res->beacon_ies && res->len_beacon_ies &&
3147 res->beacon_ies != res->information_elements)
3148 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3149 res->len_beacon_ies, res->beacon_ies);
3151 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3152 if (res->beacon_interval)
3153 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3154 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3155 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3156 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3157 jiffies_to_msecs(jiffies - intbss->ts));
3159 switch (rdev->wiphy.signal_type) {
3160 case CFG80211_SIGNAL_TYPE_MBM:
3161 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3163 case CFG80211_SIGNAL_TYPE_UNSPEC:
3164 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3170 switch (wdev->iftype) {
3171 case NL80211_IFTYPE_STATION:
3172 if (intbss == wdev->current_bss)
3173 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3174 NL80211_BSS_STATUS_ASSOCIATED);
3175 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3176 if (intbss != wdev->auth_bsses[i])
3178 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3179 NL80211_BSS_STATUS_AUTHENTICATED);
3183 case NL80211_IFTYPE_ADHOC:
3184 if (intbss == wdev->current_bss)
3185 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3186 NL80211_BSS_STATUS_IBSS_JOINED);
3192 nla_nest_end(msg, bss);
3194 return genlmsg_end(msg, hdr);
3197 genlmsg_cancel(msg, hdr);
3201 static int nl80211_dump_scan(struct sk_buff *skb,
3202 struct netlink_callback *cb)
3204 struct cfg80211_registered_device *rdev;
3205 struct net_device *dev;
3206 struct cfg80211_internal_bss *scan;
3207 struct wireless_dev *wdev;
3208 int ifidx = cb->args[0];
3209 int start = cb->args[1], idx = 0;
3213 ifidx = nl80211_get_ifidx(cb);
3216 cb->args[0] = ifidx;
3218 dev = dev_get_by_index(sock_net(skb->sk), ifidx);
3222 rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
3224 err = PTR_ERR(rdev);
3225 goto out_put_netdev;
3228 wdev = dev->ieee80211_ptr;
3231 spin_lock_bh(&rdev->bss_lock);
3232 cfg80211_bss_expire(rdev);
3234 list_for_each_entry(scan, &rdev->bss_list, list) {
3237 if (nl80211_send_bss(skb,
3238 NETLINK_CB(cb->skb).pid,
3239 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3240 rdev, wdev, scan) < 0) {
3247 spin_unlock_bh(&rdev->bss_lock);
3252 cfg80211_unlock_rdev(rdev);
3259 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
3260 int flags, struct net_device *dev,
3261 struct survey_info *survey)
3264 struct nlattr *infoattr;
3266 /* Survey without a channel doesn't make sense */
3267 if (!survey->channel)
3270 hdr = nl80211hdr_put(msg, pid, seq, flags,
3271 NL80211_CMD_NEW_SURVEY_RESULTS);
3275 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3277 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
3279 goto nla_put_failure;
3281 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
3282 survey->channel->center_freq);
3283 if (survey->filled & SURVEY_INFO_NOISE_DBM)
3284 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
3287 nla_nest_end(msg, infoattr);
3289 return genlmsg_end(msg, hdr);
3292 genlmsg_cancel(msg, hdr);
3296 static int nl80211_dump_survey(struct sk_buff *skb,
3297 struct netlink_callback *cb)
3299 struct survey_info survey;
3300 struct cfg80211_registered_device *dev;
3301 struct net_device *netdev;
3302 int ifidx = cb->args[0];
3303 int survey_idx = cb->args[1];
3307 ifidx = nl80211_get_ifidx(cb);
3310 cb->args[0] = ifidx;
3314 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3320 dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
3326 if (!dev->ops->dump_survey) {
3332 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
3339 if (nl80211_send_survey(skb,
3340 NETLINK_CB(cb->skb).pid,
3341 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3349 cb->args[1] = survey_idx;
3352 cfg80211_unlock_rdev(dev);
3359 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3361 return auth_type <= NL80211_AUTHTYPE_MAX;
3364 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3366 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3367 NL80211_WPA_VERSION_2));
3370 static bool nl80211_valid_akm_suite(u32 akm)
3372 return akm == WLAN_AKM_SUITE_8021X ||
3373 akm == WLAN_AKM_SUITE_PSK;
3376 static bool nl80211_valid_cipher_suite(u32 cipher)
3378 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3379 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3380 cipher == WLAN_CIPHER_SUITE_TKIP ||
3381 cipher == WLAN_CIPHER_SUITE_CCMP ||
3382 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
3386 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3388 struct cfg80211_registered_device *rdev;
3389 struct net_device *dev;
3390 struct ieee80211_channel *chan;
3391 const u8 *bssid, *ssid, *ie = NULL;
3392 int err, ssid_len, ie_len = 0;
3393 enum nl80211_auth_type auth_type;
3394 struct key_parse key;
3396 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3399 if (!info->attrs[NL80211_ATTR_MAC])
3402 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3405 if (!info->attrs[NL80211_ATTR_SSID])
3408 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3411 err = nl80211_parse_key(info, &key);
3416 if (!key.p.key || !key.p.key_len)
3418 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3419 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3420 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3421 key.p.key_len != WLAN_KEY_LEN_WEP104))
3432 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
3436 if (!rdev->ops->auth) {
3441 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3446 if (!netif_running(dev)) {
3451 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3452 chan = ieee80211_get_channel(&rdev->wiphy,
3453 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3454 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) {
3459 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3460 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3462 if (info->attrs[NL80211_ATTR_IE]) {
3463 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3464 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3467 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3468 if (!nl80211_valid_auth_type(auth_type)) {
3473 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
3474 ssid, ssid_len, ie, ie_len,
3475 key.p.key, key.p.key_len, key.idx);
3478 cfg80211_unlock_rdev(rdev);
3485 static int nl80211_crypto_settings(struct genl_info *info,
3486 struct cfg80211_crypto_settings *settings,
3489 memset(settings, 0, sizeof(*settings));
3491 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3493 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
3497 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3498 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3499 settings->n_ciphers_pairwise = len / sizeof(u32);
3501 if (len % sizeof(u32))
3504 if (settings->n_ciphers_pairwise > cipher_limit)
3507 memcpy(settings->ciphers_pairwise, data, len);
3509 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3510 if (!nl80211_valid_cipher_suite(
3511 settings->ciphers_pairwise[i]))
3515 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
3516 settings->cipher_group =
3517 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
3518 if (!nl80211_valid_cipher_suite(settings->cipher_group))
3522 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
3523 settings->wpa_versions =
3524 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
3525 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
3529 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
3533 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
3534 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
3535 settings->n_akm_suites = len / sizeof(u32);
3537 if (len % sizeof(u32))
3540 memcpy(settings->akm_suites, data, len);
3542 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3543 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
3550 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
3552 struct cfg80211_registered_device *rdev;
3553 struct net_device *dev;
3554 struct wireless_dev *wdev;
3555 struct cfg80211_crypto_settings crypto;
3556 struct ieee80211_channel *chan, *fixedchan;
3557 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
3558 int err, ssid_len, ie_len = 0;
3559 bool use_mfp = false;
3561 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3564 if (!info->attrs[NL80211_ATTR_MAC] ||
3565 !info->attrs[NL80211_ATTR_SSID] ||
3566 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
3571 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
3575 if (!rdev->ops->assoc) {
3580 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3585 if (!netif_running(dev)) {
3590 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3592 chan = ieee80211_get_channel(&rdev->wiphy,
3593 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3594 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) {
3599 mutex_lock(&rdev->devlist_mtx);
3600 wdev = dev->ieee80211_ptr;
3601 fixedchan = rdev_fixed_channel(rdev, wdev);
3602 if (fixedchan && chan != fixedchan) {
3604 mutex_unlock(&rdev->devlist_mtx);
3607 mutex_unlock(&rdev->devlist_mtx);
3609 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3610 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3612 if (info->attrs[NL80211_ATTR_IE]) {
3613 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3614 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3617 if (info->attrs[NL80211_ATTR_USE_MFP]) {
3618 enum nl80211_mfp mfp =
3619 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
3620 if (mfp == NL80211_MFP_REQUIRED)
3622 else if (mfp != NL80211_MFP_NO) {
3628 if (info->attrs[NL80211_ATTR_PREV_BSSID])
3629 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
3631 err = nl80211_crypto_settings(info, &crypto, 1);
3633 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
3634 ssid, ssid_len, ie, ie_len, use_mfp,
3638 cfg80211_unlock_rdev(rdev);
3645 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3647 struct cfg80211_registered_device *rdev;
3648 struct net_device *dev;
3649 const u8 *ie = NULL, *bssid;
3650 int err, ie_len = 0;
3653 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3656 if (!info->attrs[NL80211_ATTR_MAC])
3659 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3664 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
3668 if (!rdev->ops->deauth) {
3673 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3678 if (!netif_running(dev)) {
3683 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3685 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3686 if (reason_code == 0) {
3687 /* Reason Code 0 is reserved */
3692 if (info->attrs[NL80211_ATTR_IE]) {
3693 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3694 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3697 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code);
3700 cfg80211_unlock_rdev(rdev);
3707 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3709 struct cfg80211_registered_device *rdev;
3710 struct net_device *dev;
3711 const u8 *ie = NULL, *bssid;
3712 int err, ie_len = 0;
3715 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3718 if (!info->attrs[NL80211_ATTR_MAC])
3721 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3726 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
3730 if (!rdev->ops->disassoc) {
3735 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
3740 if (!netif_running(dev)) {
3745 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3747 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3748 if (reason_code == 0) {
3749 /* Reason Code 0 is reserved */
3754 if (info->attrs[NL80211_ATTR_IE]) {
3755 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3756 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3759 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code);
3762 cfg80211_unlock_rdev(rdev);
3769 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3771 struct cfg80211_registered_device *rdev;
3772 struct net_device *dev;
3773 struct cfg80211_ibss_params ibss;
3774 struct wiphy *wiphy;
3775 struct cfg80211_cached_keys *connkeys = NULL;
3778 memset(&ibss, 0, sizeof(ibss));
3780 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3783 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3784 !info->attrs[NL80211_ATTR_SSID] ||
3785 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3788 ibss.beacon_interval = 100;
3790 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3791 ibss.beacon_interval =
3792 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3793 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3799 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
3803 if (!rdev->ops->join_ibss) {
3808 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3813 if (!netif_running(dev)) {
3818 wiphy = &rdev->wiphy;
3820 if (info->attrs[NL80211_ATTR_MAC])
3821 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3822 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3823 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3825 if (info->attrs[NL80211_ATTR_IE]) {
3826 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3827 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3830 ibss.channel = ieee80211_get_channel(wiphy,
3831 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3832 if (!ibss.channel ||
3833 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
3834 ibss.channel->flags & IEEE80211_CHAN_DISABLED) {
3839 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
3840 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3842 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
3843 connkeys = nl80211_parse_connkeys(rdev,
3844 info->attrs[NL80211_ATTR_KEYS]);
3845 if (IS_ERR(connkeys)) {
3846 err = PTR_ERR(connkeys);
3852 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
3855 cfg80211_unlock_rdev(rdev);
3864 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3866 struct cfg80211_registered_device *rdev;
3867 struct net_device *dev;
3872 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
3876 if (!rdev->ops->leave_ibss) {
3881 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
3886 if (!netif_running(dev)) {
3891 err = cfg80211_leave_ibss(rdev, dev, false);
3894 cfg80211_unlock_rdev(rdev);
3901 #ifdef CONFIG_NL80211_TESTMODE
3902 static struct genl_multicast_group nl80211_testmode_mcgrp = {
3906 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
3908 struct cfg80211_registered_device *rdev;
3911 if (!info->attrs[NL80211_ATTR_TESTDATA])
3916 rdev = cfg80211_get_dev_from_info(info);
3918 err = PTR_ERR(rdev);
3923 if (rdev->ops->testmode_cmd) {
3924 rdev->testmode_info = info;
3925 err = rdev->ops->testmode_cmd(&rdev->wiphy,
3926 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
3927 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
3928 rdev->testmode_info = NULL;
3931 cfg80211_unlock_rdev(rdev);
3938 static struct sk_buff *
3939 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
3940 int approxlen, u32 pid, u32 seq, gfp_t gfp)
3942 struct sk_buff *skb;
3944 struct nlattr *data;
3946 skb = nlmsg_new(approxlen + 100, gfp);
3950 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
3956 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3957 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
3959 ((void **)skb->cb)[0] = rdev;
3960 ((void **)skb->cb)[1] = hdr;
3961 ((void **)skb->cb)[2] = data;
3970 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
3973 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
3975 if (WARN_ON(!rdev->testmode_info))
3978 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
3979 rdev->testmode_info->snd_pid,
3980 rdev->testmode_info->snd_seq,
3983 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
3985 int cfg80211_testmode_reply(struct sk_buff *skb)
3987 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
3988 void *hdr = ((void **)skb->cb)[1];
3989 struct nlattr *data = ((void **)skb->cb)[2];
3991 if (WARN_ON(!rdev->testmode_info)) {
3996 nla_nest_end(skb, data);
3997 genlmsg_end(skb, hdr);
3998 return genlmsg_reply(skb, rdev->testmode_info);
4000 EXPORT_SYMBOL(cfg80211_testmode_reply);
4002 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4003 int approxlen, gfp_t gfp)
4005 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4007 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4009 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4011 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4013 void *hdr = ((void **)skb->cb)[1];
4014 struct nlattr *data = ((void **)skb->cb)[2];
4016 nla_nest_end(skb, data);
4017 genlmsg_end(skb, hdr);
4018 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4020 EXPORT_SYMBOL(cfg80211_testmode_event);
4023 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4025 struct cfg80211_registered_device *rdev;
4026 struct net_device *dev;
4027 struct cfg80211_connect_params connect;
4028 struct wiphy *wiphy;
4029 struct cfg80211_cached_keys *connkeys = NULL;
4032 memset(&connect, 0, sizeof(connect));
4034 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4037 if (!info->attrs[NL80211_ATTR_SSID] ||
4038 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4041 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4043 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4044 if (!nl80211_valid_auth_type(connect.auth_type))
4047 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4049 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4051 err = nl80211_crypto_settings(info, &connect.crypto,
4052 NL80211_MAX_NR_CIPHER_SUITES);
4057 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4061 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
4066 if (!netif_running(dev)) {
4071 wiphy = &rdev->wiphy;
4073 if (info->attrs[NL80211_ATTR_MAC])
4074 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4075 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4076 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4078 if (info->attrs[NL80211_ATTR_IE]) {
4079 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4080 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4083 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4085 ieee80211_get_channel(wiphy,
4086 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4087 if (!connect.channel ||
4088 connect.channel->flags & IEEE80211_CHAN_DISABLED) {
4094 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4095 connkeys = nl80211_parse_connkeys(rdev,
4096 info->attrs[NL80211_ATTR_KEYS]);
4097 if (IS_ERR(connkeys)) {
4098 err = PTR_ERR(connkeys);
4104 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4107 cfg80211_unlock_rdev(rdev);
4116 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4118 struct cfg80211_registered_device *rdev;
4119 struct net_device *dev;
4123 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4124 reason = WLAN_REASON_DEAUTH_LEAVING;
4126 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4133 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4137 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
4142 if (!netif_running(dev)) {
4147 err = cfg80211_disconnect(rdev, dev, reason, true);
4150 cfg80211_unlock_rdev(rdev);
4157 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4159 struct cfg80211_registered_device *rdev;
4164 if (!info->attrs[NL80211_ATTR_PID])
4167 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4171 rdev = cfg80211_get_dev_from_info(info);
4173 err = PTR_ERR(rdev);
4177 net = get_net_ns_by_pid(pid);
4185 /* check if anything to do */
4186 if (net_eq(wiphy_net(&rdev->wiphy), net))
4189 err = cfg80211_switch_netns(rdev, net);
4193 cfg80211_unlock_rdev(rdev);
4199 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4201 struct cfg80211_registered_device *rdev;
4202 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4203 struct cfg80211_pmksa *pmksa) = NULL;
4205 struct net_device *dev;
4206 struct cfg80211_pmksa pmksa;
4208 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4210 if (!info->attrs[NL80211_ATTR_MAC])
4213 if (!info->attrs[NL80211_ATTR_PMKID])
4218 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4222 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4223 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4225 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
4230 switch (info->genlhdr->cmd) {
4231 case NL80211_CMD_SET_PMKSA:
4232 rdev_ops = rdev->ops->set_pmksa;
4234 case NL80211_CMD_DEL_PMKSA:
4235 rdev_ops = rdev->ops->del_pmksa;
4247 err = rdev_ops(&rdev->wiphy, dev, &pmksa);
4250 cfg80211_unlock_rdev(rdev);
4258 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4260 struct cfg80211_registered_device *rdev;
4262 struct net_device *dev;
4266 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4270 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
4275 if (!rdev->ops->flush_pmksa) {
4280 err = rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4283 cfg80211_unlock_rdev(rdev);
4292 static int nl80211_remain_on_channel(struct sk_buff *skb,
4293 struct genl_info *info)
4295 struct cfg80211_registered_device *rdev;
4296 struct net_device *dev;
4297 struct ieee80211_channel *chan;
4298 struct sk_buff *msg;
4301 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4305 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4306 !info->attrs[NL80211_ATTR_DURATION])
4309 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4312 * We should be on that channel for at least one jiffie,
4313 * and more than 5 seconds seems excessive.
4315 if (!duration || !msecs_to_jiffies(duration) || duration > 5000)
4320 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4324 if (!rdev->ops->remain_on_channel) {
4329 if (!netif_running(dev)) {
4334 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4335 channel_type = nla_get_u32(
4336 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4337 if (channel_type != NL80211_CHAN_NO_HT &&
4338 channel_type != NL80211_CHAN_HT20 &&
4339 channel_type != NL80211_CHAN_HT40PLUS &&
4340 channel_type != NL80211_CHAN_HT40MINUS)
4345 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4346 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4352 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4358 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4359 NL80211_CMD_REMAIN_ON_CHANNEL);
4366 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
4367 channel_type, duration, &cookie);
4372 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4374 genlmsg_end(msg, hdr);
4375 err = genlmsg_reply(msg, info);
4383 cfg80211_unlock_rdev(rdev);
4390 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
4391 struct genl_info *info)
4393 struct cfg80211_registered_device *rdev;
4394 struct net_device *dev;
4398 if (!info->attrs[NL80211_ATTR_COOKIE])
4403 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4407 if (!rdev->ops->cancel_remain_on_channel) {
4412 if (!netif_running(dev)) {
4417 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4419 err = rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
4422 cfg80211_unlock_rdev(rdev);
4429 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4430 u8 *rates, u8 rates_len)
4435 for (i = 0; i < rates_len; i++) {
4436 int rate = (rates[i] & 0x7f) * 5;
4438 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4439 struct ieee80211_rate *srate =
4440 &sband->bitrates[ridx];
4441 if (rate == srate->bitrate) {
4446 if (ridx == sband->n_bitrates)
4447 return 0; /* rate not found */
4453 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4454 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4455 .len = NL80211_MAX_SUPP_RATES },
4458 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
4459 struct genl_info *info)
4461 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4462 struct cfg80211_registered_device *rdev;
4463 struct cfg80211_bitrate_mask mask;
4465 struct net_device *dev;
4466 struct nlattr *tx_rates;
4467 struct ieee80211_supported_band *sband;
4469 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
4474 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4478 if (!rdev->ops->set_bitrate_mask) {
4483 memset(&mask, 0, sizeof(mask));
4484 /* Default to all rates enabled */
4485 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
4486 sband = rdev->wiphy.bands[i];
4487 mask.control[i].legacy =
4488 sband ? (1 << sband->n_bitrates) - 1 : 0;
4492 * The nested attribute uses enum nl80211_band as the index. This maps
4493 * directly to the enum ieee80211_band values used in cfg80211.
4495 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
4497 enum ieee80211_band band = nla_type(tx_rates);
4498 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
4502 sband = rdev->wiphy.bands[band];
4503 if (sband == NULL) {
4507 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
4508 nla_len(tx_rates), nl80211_txattr_policy);
4509 if (tb[NL80211_TXRATE_LEGACY]) {
4510 mask.control[band].legacy = rateset_to_mask(
4512 nla_data(tb[NL80211_TXRATE_LEGACY]),
4513 nla_len(tb[NL80211_TXRATE_LEGACY]));
4514 if (mask.control[band].legacy == 0) {
4521 err = rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
4525 cfg80211_unlock_rdev(rdev);
4531 static int nl80211_register_action(struct sk_buff *skb, struct genl_info *info)
4533 struct cfg80211_registered_device *rdev;
4534 struct net_device *dev;
4537 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
4540 if (nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]) < 1)
4545 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4549 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
4554 /* not much point in registering if we can't reply */
4555 if (!rdev->ops->action) {
4560 err = cfg80211_mlme_register_action(dev->ieee80211_ptr, info->snd_pid,
4561 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
4562 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
4564 cfg80211_unlock_rdev(rdev);
4571 static int nl80211_action(struct sk_buff *skb, struct genl_info *info)
4573 struct cfg80211_registered_device *rdev;
4574 struct net_device *dev;
4575 struct ieee80211_channel *chan;
4576 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4581 struct sk_buff *msg;
4583 if (!info->attrs[NL80211_ATTR_FRAME] ||
4584 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4589 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4593 if (!rdev->ops->action) {
4598 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
4603 if (!netif_running(dev)) {
4608 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4609 channel_type = nla_get_u32(
4610 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4611 if (channel_type != NL80211_CHAN_NO_HT &&
4612 channel_type != NL80211_CHAN_HT20 &&
4613 channel_type != NL80211_CHAN_HT40PLUS &&
4614 channel_type != NL80211_CHAN_HT40MINUS)
4619 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4620 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4626 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4632 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4633 NL80211_CMD_ACTION);
4639 err = cfg80211_mlme_action(rdev, dev, chan, channel_type,
4640 nla_data(info->attrs[NL80211_ATTR_FRAME]),
4641 nla_len(info->attrs[NL80211_ATTR_FRAME]),
4646 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4648 genlmsg_end(msg, hdr);
4649 err = genlmsg_reply(msg, info);
4657 cfg80211_unlock_rdev(rdev);
4664 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
4666 struct cfg80211_registered_device *rdev;
4667 struct wireless_dev *wdev;
4668 struct net_device *dev;
4673 if (!info->attrs[NL80211_ATTR_PS_STATE]) {
4678 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
4680 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) {
4687 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4691 wdev = dev->ieee80211_ptr;
4693 if (!rdev->ops->set_power_mgmt) {
4698 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
4700 if (state == wdev->ps)
4705 if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, wdev->ps,
4707 /* assume this means it's off */
4711 cfg80211_unlock_rdev(rdev);
4719 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
4721 struct cfg80211_registered_device *rdev;
4722 enum nl80211_ps_state ps_state;
4723 struct wireless_dev *wdev;
4724 struct net_device *dev;
4725 struct sk_buff *msg;
4731 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4735 wdev = dev->ieee80211_ptr;
4737 if (!rdev->ops->set_power_mgmt) {
4742 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4748 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4749 NL80211_CMD_GET_POWER_SAVE);
4756 ps_state = NL80211_PS_ENABLED;
4758 ps_state = NL80211_PS_DISABLED;
4760 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
4762 genlmsg_end(msg, hdr);
4763 err = genlmsg_reply(msg, info);
4773 cfg80211_unlock_rdev(rdev);
4782 static struct genl_ops nl80211_ops[] = {
4784 .cmd = NL80211_CMD_GET_WIPHY,
4785 .doit = nl80211_get_wiphy,
4786 .dumpit = nl80211_dump_wiphy,
4787 .policy = nl80211_policy,
4788 /* can be retrieved by unprivileged users */
4791 .cmd = NL80211_CMD_SET_WIPHY,
4792 .doit = nl80211_set_wiphy,
4793 .policy = nl80211_policy,
4794 .flags = GENL_ADMIN_PERM,
4797 .cmd = NL80211_CMD_GET_INTERFACE,
4798 .doit = nl80211_get_interface,
4799 .dumpit = nl80211_dump_interface,
4800 .policy = nl80211_policy,
4801 /* can be retrieved by unprivileged users */
4804 .cmd = NL80211_CMD_SET_INTERFACE,
4805 .doit = nl80211_set_interface,
4806 .policy = nl80211_policy,
4807 .flags = GENL_ADMIN_PERM,
4810 .cmd = NL80211_CMD_NEW_INTERFACE,
4811 .doit = nl80211_new_interface,
4812 .policy = nl80211_policy,
4813 .flags = GENL_ADMIN_PERM,
4816 .cmd = NL80211_CMD_DEL_INTERFACE,
4817 .doit = nl80211_del_interface,
4818 .policy = nl80211_policy,
4819 .flags = GENL_ADMIN_PERM,
4822 .cmd = NL80211_CMD_GET_KEY,
4823 .doit = nl80211_get_key,
4824 .policy = nl80211_policy,
4825 .flags = GENL_ADMIN_PERM,
4828 .cmd = NL80211_CMD_SET_KEY,
4829 .doit = nl80211_set_key,
4830 .policy = nl80211_policy,
4831 .flags = GENL_ADMIN_PERM,
4834 .cmd = NL80211_CMD_NEW_KEY,
4835 .doit = nl80211_new_key,
4836 .policy = nl80211_policy,
4837 .flags = GENL_ADMIN_PERM,
4840 .cmd = NL80211_CMD_DEL_KEY,
4841 .doit = nl80211_del_key,
4842 .policy = nl80211_policy,
4843 .flags = GENL_ADMIN_PERM,
4846 .cmd = NL80211_CMD_SET_BEACON,
4847 .policy = nl80211_policy,
4848 .flags = GENL_ADMIN_PERM,
4849 .doit = nl80211_addset_beacon,
4852 .cmd = NL80211_CMD_NEW_BEACON,
4853 .policy = nl80211_policy,
4854 .flags = GENL_ADMIN_PERM,
4855 .doit = nl80211_addset_beacon,
4858 .cmd = NL80211_CMD_DEL_BEACON,
4859 .policy = nl80211_policy,
4860 .flags = GENL_ADMIN_PERM,
4861 .doit = nl80211_del_beacon,
4864 .cmd = NL80211_CMD_GET_STATION,
4865 .doit = nl80211_get_station,
4866 .dumpit = nl80211_dump_station,
4867 .policy = nl80211_policy,
4870 .cmd = NL80211_CMD_SET_STATION,
4871 .doit = nl80211_set_station,
4872 .policy = nl80211_policy,
4873 .flags = GENL_ADMIN_PERM,
4876 .cmd = NL80211_CMD_NEW_STATION,
4877 .doit = nl80211_new_station,
4878 .policy = nl80211_policy,
4879 .flags = GENL_ADMIN_PERM,
4882 .cmd = NL80211_CMD_DEL_STATION,
4883 .doit = nl80211_del_station,
4884 .policy = nl80211_policy,
4885 .flags = GENL_ADMIN_PERM,
4888 .cmd = NL80211_CMD_GET_MPATH,
4889 .doit = nl80211_get_mpath,
4890 .dumpit = nl80211_dump_mpath,
4891 .policy = nl80211_policy,
4892 .flags = GENL_ADMIN_PERM,
4895 .cmd = NL80211_CMD_SET_MPATH,
4896 .doit = nl80211_set_mpath,
4897 .policy = nl80211_policy,
4898 .flags = GENL_ADMIN_PERM,
4901 .cmd = NL80211_CMD_NEW_MPATH,
4902 .doit = nl80211_new_mpath,
4903 .policy = nl80211_policy,
4904 .flags = GENL_ADMIN_PERM,
4907 .cmd = NL80211_CMD_DEL_MPATH,
4908 .doit = nl80211_del_mpath,
4909 .policy = nl80211_policy,
4910 .flags = GENL_ADMIN_PERM,
4913 .cmd = NL80211_CMD_SET_BSS,
4914 .doit = nl80211_set_bss,
4915 .policy = nl80211_policy,
4916 .flags = GENL_ADMIN_PERM,
4919 .cmd = NL80211_CMD_GET_REG,
4920 .doit = nl80211_get_reg,
4921 .policy = nl80211_policy,
4922 /* can be retrieved by unprivileged users */
4925 .cmd = NL80211_CMD_SET_REG,
4926 .doit = nl80211_set_reg,
4927 .policy = nl80211_policy,
4928 .flags = GENL_ADMIN_PERM,
4931 .cmd = NL80211_CMD_REQ_SET_REG,
4932 .doit = nl80211_req_set_reg,
4933 .policy = nl80211_policy,
4934 .flags = GENL_ADMIN_PERM,
4937 .cmd = NL80211_CMD_GET_MESH_PARAMS,
4938 .doit = nl80211_get_mesh_params,
4939 .policy = nl80211_policy,
4940 /* can be retrieved by unprivileged users */
4943 .cmd = NL80211_CMD_SET_MESH_PARAMS,
4944 .doit = nl80211_set_mesh_params,
4945 .policy = nl80211_policy,
4946 .flags = GENL_ADMIN_PERM,
4949 .cmd = NL80211_CMD_TRIGGER_SCAN,
4950 .doit = nl80211_trigger_scan,
4951 .policy = nl80211_policy,
4952 .flags = GENL_ADMIN_PERM,
4955 .cmd = NL80211_CMD_GET_SCAN,
4956 .policy = nl80211_policy,
4957 .dumpit = nl80211_dump_scan,
4960 .cmd = NL80211_CMD_AUTHENTICATE,
4961 .doit = nl80211_authenticate,
4962 .policy = nl80211_policy,
4963 .flags = GENL_ADMIN_PERM,
4966 .cmd = NL80211_CMD_ASSOCIATE,
4967 .doit = nl80211_associate,
4968 .policy = nl80211_policy,
4969 .flags = GENL_ADMIN_PERM,
4972 .cmd = NL80211_CMD_DEAUTHENTICATE,
4973 .doit = nl80211_deauthenticate,
4974 .policy = nl80211_policy,
4975 .flags = GENL_ADMIN_PERM,
4978 .cmd = NL80211_CMD_DISASSOCIATE,
4979 .doit = nl80211_disassociate,
4980 .policy = nl80211_policy,
4981 .flags = GENL_ADMIN_PERM,
4984 .cmd = NL80211_CMD_JOIN_IBSS,
4985 .doit = nl80211_join_ibss,
4986 .policy = nl80211_policy,
4987 .flags = GENL_ADMIN_PERM,
4990 .cmd = NL80211_CMD_LEAVE_IBSS,
4991 .doit = nl80211_leave_ibss,
4992 .policy = nl80211_policy,
4993 .flags = GENL_ADMIN_PERM,
4995 #ifdef CONFIG_NL80211_TESTMODE
4997 .cmd = NL80211_CMD_TESTMODE,
4998 .doit = nl80211_testmode_do,
4999 .policy = nl80211_policy,
5000 .flags = GENL_ADMIN_PERM,
5004 .cmd = NL80211_CMD_CONNECT,
5005 .doit = nl80211_connect,
5006 .policy = nl80211_policy,
5007 .flags = GENL_ADMIN_PERM,
5010 .cmd = NL80211_CMD_DISCONNECT,
5011 .doit = nl80211_disconnect,
5012 .policy = nl80211_policy,
5013 .flags = GENL_ADMIN_PERM,
5016 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
5017 .doit = nl80211_wiphy_netns,
5018 .policy = nl80211_policy,
5019 .flags = GENL_ADMIN_PERM,
5022 .cmd = NL80211_CMD_GET_SURVEY,
5023 .policy = nl80211_policy,
5024 .dumpit = nl80211_dump_survey,
5027 .cmd = NL80211_CMD_SET_PMKSA,
5028 .doit = nl80211_setdel_pmksa,
5029 .policy = nl80211_policy,
5030 .flags = GENL_ADMIN_PERM,
5033 .cmd = NL80211_CMD_DEL_PMKSA,
5034 .doit = nl80211_setdel_pmksa,
5035 .policy = nl80211_policy,
5036 .flags = GENL_ADMIN_PERM,
5039 .cmd = NL80211_CMD_FLUSH_PMKSA,
5040 .doit = nl80211_flush_pmksa,
5041 .policy = nl80211_policy,
5042 .flags = GENL_ADMIN_PERM,
5045 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
5046 .doit = nl80211_remain_on_channel,
5047 .policy = nl80211_policy,
5048 .flags = GENL_ADMIN_PERM,
5051 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5052 .doit = nl80211_cancel_remain_on_channel,
5053 .policy = nl80211_policy,
5054 .flags = GENL_ADMIN_PERM,
5057 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
5058 .doit = nl80211_set_tx_bitrate_mask,
5059 .policy = nl80211_policy,
5060 .flags = GENL_ADMIN_PERM,
5063 .cmd = NL80211_CMD_REGISTER_ACTION,
5064 .doit = nl80211_register_action,
5065 .policy = nl80211_policy,
5066 .flags = GENL_ADMIN_PERM,
5069 .cmd = NL80211_CMD_ACTION,
5070 .doit = nl80211_action,
5071 .policy = nl80211_policy,
5072 .flags = GENL_ADMIN_PERM,
5075 .cmd = NL80211_CMD_SET_POWER_SAVE,
5076 .doit = nl80211_set_power_save,
5077 .policy = nl80211_policy,
5078 .flags = GENL_ADMIN_PERM,
5081 .cmd = NL80211_CMD_GET_POWER_SAVE,
5082 .doit = nl80211_get_power_save,
5083 .policy = nl80211_policy,
5084 /* can be retrieved by unprivileged users */
5088 static struct genl_multicast_group nl80211_mlme_mcgrp = {
5092 /* multicast groups */
5093 static struct genl_multicast_group nl80211_config_mcgrp = {
5096 static struct genl_multicast_group nl80211_scan_mcgrp = {
5099 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
5100 .name = "regulatory",
5103 /* notification functions */
5105 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
5107 struct sk_buff *msg;
5109 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5113 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
5118 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5119 nl80211_config_mcgrp.id, GFP_KERNEL);
5122 static int nl80211_add_scan_req(struct sk_buff *msg,
5123 struct cfg80211_registered_device *rdev)
5125 struct cfg80211_scan_request *req = rdev->scan_req;
5126 struct nlattr *nest;
5129 ASSERT_RDEV_LOCK(rdev);
5134 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
5136 goto nla_put_failure;
5137 for (i = 0; i < req->n_ssids; i++)
5138 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
5139 nla_nest_end(msg, nest);
5141 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
5143 goto nla_put_failure;
5144 for (i = 0; i < req->n_channels; i++)
5145 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
5146 nla_nest_end(msg, nest);
5149 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
5156 static int nl80211_send_scan_msg(struct sk_buff *msg,
5157 struct cfg80211_registered_device *rdev,
5158 struct net_device *netdev,
5159 u32 pid, u32 seq, int flags,
5164 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
5168 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5169 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5171 /* ignore errors and send incomplete event anyway */
5172 nl80211_add_scan_req(msg, rdev);
5174 return genlmsg_end(msg, hdr);
5177 genlmsg_cancel(msg, hdr);
5181 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
5182 struct net_device *netdev)
5184 struct sk_buff *msg;
5186 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5190 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5191 NL80211_CMD_TRIGGER_SCAN) < 0) {
5196 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5197 nl80211_scan_mcgrp.id, GFP_KERNEL);
5200 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
5201 struct net_device *netdev)
5203 struct sk_buff *msg;
5205 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5209 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5210 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
5215 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5216 nl80211_scan_mcgrp.id, GFP_KERNEL);
5219 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
5220 struct net_device *netdev)
5222 struct sk_buff *msg;
5224 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5228 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5229 NL80211_CMD_SCAN_ABORTED) < 0) {
5234 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5235 nl80211_scan_mcgrp.id, GFP_KERNEL);
5239 * This can happen on global regulatory changes or device specific settings
5240 * based on custom world regulatory domains.
5242 void nl80211_send_reg_change_event(struct regulatory_request *request)
5244 struct sk_buff *msg;
5247 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5251 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
5257 /* Userspace can always count this one always being set */
5258 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
5260 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
5261 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5262 NL80211_REGDOM_TYPE_WORLD);
5263 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
5264 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5265 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
5266 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
5268 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5269 NL80211_REGDOM_TYPE_INTERSECTION);
5271 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5272 NL80211_REGDOM_TYPE_COUNTRY);
5273 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
5276 if (wiphy_idx_valid(request->wiphy_idx))
5277 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
5279 if (genlmsg_end(msg, hdr) < 0) {
5285 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
5292 genlmsg_cancel(msg, hdr);
5296 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
5297 struct net_device *netdev,
5298 const u8 *buf, size_t len,
5299 enum nl80211_commands cmd, gfp_t gfp)
5301 struct sk_buff *msg;
5304 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5308 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5314 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5315 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5316 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5318 if (genlmsg_end(msg, hdr) < 0) {
5323 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5324 nl80211_mlme_mcgrp.id, gfp);
5328 genlmsg_cancel(msg, hdr);
5332 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
5333 struct net_device *netdev, const u8 *buf,
5334 size_t len, gfp_t gfp)
5336 nl80211_send_mlme_event(rdev, netdev, buf, len,
5337 NL80211_CMD_AUTHENTICATE, gfp);
5340 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
5341 struct net_device *netdev, const u8 *buf,
5342 size_t len, gfp_t gfp)
5344 nl80211_send_mlme_event(rdev, netdev, buf, len,
5345 NL80211_CMD_ASSOCIATE, gfp);
5348 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
5349 struct net_device *netdev, const u8 *buf,
5350 size_t len, gfp_t gfp)
5352 nl80211_send_mlme_event(rdev, netdev, buf, len,
5353 NL80211_CMD_DEAUTHENTICATE, gfp);
5356 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
5357 struct net_device *netdev, const u8 *buf,
5358 size_t len, gfp_t gfp)
5360 nl80211_send_mlme_event(rdev, netdev, buf, len,
5361 NL80211_CMD_DISASSOCIATE, gfp);
5364 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
5365 struct net_device *netdev, int cmd,
5366 const u8 *addr, gfp_t gfp)
5368 struct sk_buff *msg;
5371 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5375 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5381 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5382 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5383 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
5384 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5386 if (genlmsg_end(msg, hdr) < 0) {
5391 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5392 nl80211_mlme_mcgrp.id, gfp);
5396 genlmsg_cancel(msg, hdr);
5400 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
5401 struct net_device *netdev, const u8 *addr,
5404 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
5408 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
5409 struct net_device *netdev, const u8 *addr,
5412 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
5416 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
5417 struct net_device *netdev, const u8 *bssid,
5418 const u8 *req_ie, size_t req_ie_len,
5419 const u8 *resp_ie, size_t resp_ie_len,
5420 u16 status, gfp_t gfp)
5422 struct sk_buff *msg;
5425 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5429 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
5435 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5436 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5438 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5439 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
5441 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5443 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5445 if (genlmsg_end(msg, hdr) < 0) {
5450 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5451 nl80211_mlme_mcgrp.id, gfp);
5455 genlmsg_cancel(msg, hdr);
5460 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
5461 struct net_device *netdev, const u8 *bssid,
5462 const u8 *req_ie, size_t req_ie_len,
5463 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
5465 struct sk_buff *msg;
5468 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5472 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
5478 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5479 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5480 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5482 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5484 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5486 if (genlmsg_end(msg, hdr) < 0) {
5491 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5492 nl80211_mlme_mcgrp.id, gfp);
5496 genlmsg_cancel(msg, hdr);
5501 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
5502 struct net_device *netdev, u16 reason,
5503 const u8 *ie, size_t ie_len, bool from_ap)
5505 struct sk_buff *msg;
5508 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5512 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
5518 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5519 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5520 if (from_ap && reason)
5521 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
5523 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
5525 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
5527 if (genlmsg_end(msg, hdr) < 0) {
5532 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5533 nl80211_mlme_mcgrp.id, GFP_KERNEL);
5537 genlmsg_cancel(msg, hdr);
5542 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
5543 struct net_device *netdev, const u8 *bssid,
5546 struct sk_buff *msg;
5549 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5553 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
5559 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5560 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5561 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5563 if (genlmsg_end(msg, hdr) < 0) {
5568 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5569 nl80211_mlme_mcgrp.id, gfp);
5573 genlmsg_cancel(msg, hdr);
5577 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
5578 struct net_device *netdev, const u8 *addr,
5579 enum nl80211_key_type key_type, int key_id,
5580 const u8 *tsc, gfp_t gfp)
5582 struct sk_buff *msg;
5585 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5589 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
5595 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5596 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5598 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5599 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
5600 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
5602 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
5604 if (genlmsg_end(msg, hdr) < 0) {
5609 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5610 nl80211_mlme_mcgrp.id, gfp);
5614 genlmsg_cancel(msg, hdr);
5618 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
5619 struct ieee80211_channel *channel_before,
5620 struct ieee80211_channel *channel_after)
5622 struct sk_buff *msg;
5624 struct nlattr *nl_freq;
5626 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
5630 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
5637 * Since we are applying the beacon hint to a wiphy we know its
5638 * wiphy_idx is valid
5640 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
5643 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
5645 goto nla_put_failure;
5646 if (nl80211_msg_put_channel(msg, channel_before))
5647 goto nla_put_failure;
5648 nla_nest_end(msg, nl_freq);
5651 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
5653 goto nla_put_failure;
5654 if (nl80211_msg_put_channel(msg, channel_after))
5655 goto nla_put_failure;
5656 nla_nest_end(msg, nl_freq);
5658 if (genlmsg_end(msg, hdr) < 0) {
5664 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
5671 genlmsg_cancel(msg, hdr);
5675 static void nl80211_send_remain_on_chan_event(
5676 int cmd, struct cfg80211_registered_device *rdev,
5677 struct net_device *netdev, u64 cookie,
5678 struct ieee80211_channel *chan,
5679 enum nl80211_channel_type channel_type,
5680 unsigned int duration, gfp_t gfp)
5682 struct sk_buff *msg;
5685 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5689 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5695 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5696 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5697 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
5698 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
5699 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5701 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
5702 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5704 if (genlmsg_end(msg, hdr) < 0) {
5709 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5710 nl80211_mlme_mcgrp.id, gfp);
5714 genlmsg_cancel(msg, hdr);
5718 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
5719 struct net_device *netdev, u64 cookie,
5720 struct ieee80211_channel *chan,
5721 enum nl80211_channel_type channel_type,
5722 unsigned int duration, gfp_t gfp)
5724 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
5725 rdev, netdev, cookie, chan,
5726 channel_type, duration, gfp);
5729 void nl80211_send_remain_on_channel_cancel(
5730 struct cfg80211_registered_device *rdev, struct net_device *netdev,
5731 u64 cookie, struct ieee80211_channel *chan,
5732 enum nl80211_channel_type channel_type, gfp_t gfp)
5734 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5735 rdev, netdev, cookie, chan,
5736 channel_type, 0, gfp);
5739 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
5740 struct net_device *dev, const u8 *mac_addr,
5741 struct station_info *sinfo, gfp_t gfp)
5743 struct sk_buff *msg;
5745 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5749 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
5754 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5755 nl80211_mlme_mcgrp.id, gfp);
5758 int nl80211_send_action(struct cfg80211_registered_device *rdev,
5759 struct net_device *netdev, u32 nlpid,
5760 int freq, const u8 *buf, size_t len, gfp_t gfp)
5762 struct sk_buff *msg;
5766 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5770 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ACTION);
5776 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5777 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5778 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5779 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5781 err = genlmsg_end(msg, hdr);
5787 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
5793 genlmsg_cancel(msg, hdr);
5798 void nl80211_send_action_tx_status(struct cfg80211_registered_device *rdev,
5799 struct net_device *netdev, u64 cookie,
5800 const u8 *buf, size_t len, bool ack,
5803 struct sk_buff *msg;
5806 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5810 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ACTION_TX_STATUS);
5816 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5817 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5818 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5819 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5821 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
5823 if (genlmsg_end(msg, hdr) < 0) {
5828 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
5832 genlmsg_cancel(msg, hdr);
5836 static int nl80211_netlink_notify(struct notifier_block * nb,
5837 unsigned long state,
5840 struct netlink_notify *notify = _notify;
5841 struct cfg80211_registered_device *rdev;
5842 struct wireless_dev *wdev;
5844 if (state != NETLINK_URELEASE)
5849 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
5850 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
5851 cfg80211_mlme_unregister_actions(wdev, notify->pid);
5858 static struct notifier_block nl80211_netlink_notifier = {
5859 .notifier_call = nl80211_netlink_notify,
5862 /* initialisation/exit functions */
5864 int nl80211_init(void)
5868 err = genl_register_family_with_ops(&nl80211_fam,
5869 nl80211_ops, ARRAY_SIZE(nl80211_ops));
5873 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
5877 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
5881 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
5885 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
5889 #ifdef CONFIG_NL80211_TESTMODE
5890 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
5895 err = netlink_register_notifier(&nl80211_netlink_notifier);
5901 genl_unregister_family(&nl80211_fam);
5905 void nl80211_exit(void)
5907 netlink_unregister_notifier(&nl80211_netlink_notifier);
5908 genl_unregister_family(&nl80211_fam);