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 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
27 struct genl_info *info);
28 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
29 struct genl_info *info);
31 /* the netlink family */
32 static struct genl_family nl80211_fam = {
33 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
34 .name = "nl80211", /* have users key off the name instead */
35 .hdrsize = 0, /* no private header */
36 .version = 1, /* no particular meaning now */
37 .maxattr = NL80211_ATTR_MAX,
39 .pre_doit = nl80211_pre_doit,
40 .post_doit = nl80211_post_doit,
43 /* internal helper: get rdev and dev */
44 static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
45 struct cfg80211_registered_device **rdev,
46 struct net_device **dev)
48 struct nlattr **attrs = info->attrs;
51 if (!attrs[NL80211_ATTR_IFINDEX])
54 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
55 *dev = dev_get_by_index(genl_info_net(info), ifindex);
59 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
62 return PTR_ERR(*rdev);
68 /* policy for the attributes */
69 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
70 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
71 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
73 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
74 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
75 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
76 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
77 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
78 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
79 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
80 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
82 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
83 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
84 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
86 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
87 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
89 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
90 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
91 .len = WLAN_MAX_KEY_LEN },
92 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
93 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
94 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
95 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
96 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
98 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
99 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
100 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
101 .len = IEEE80211_MAX_DATA_LEN },
102 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
103 .len = IEEE80211_MAX_DATA_LEN },
104 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
105 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
106 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
107 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
108 .len = NL80211_MAX_SUPP_RATES },
109 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
110 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
111 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
112 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
113 .len = IEEE80211_MAX_MESH_ID_LEN },
114 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
116 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
117 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
119 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
120 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
121 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
122 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
123 .len = NL80211_MAX_SUPP_RATES },
125 [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
127 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
128 .len = NL80211_HT_CAPABILITY_LEN },
130 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
131 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
132 .len = IEEE80211_MAX_DATA_LEN },
133 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
134 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
136 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
137 .len = IEEE80211_MAX_SSID_LEN },
138 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
139 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
140 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
141 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
142 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
143 [NL80211_ATTR_STA_FLAGS2] = {
144 .len = sizeof(struct nl80211_sta_flag_update),
146 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
147 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
148 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
149 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
150 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
151 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
152 [NL80211_ATTR_PID] = { .type = NLA_U32 },
153 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
154 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
155 .len = WLAN_PMKID_LEN },
156 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
157 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
158 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
159 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
160 .len = IEEE80211_MAX_DATA_LEN },
161 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
162 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
163 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
164 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
165 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
167 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
168 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
169 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
172 /* policy for the key attributes */
173 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
174 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
175 [NL80211_KEY_IDX] = { .type = NLA_U8 },
176 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
177 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
178 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
179 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
180 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
183 /* ifidx get helper */
184 static int nl80211_get_ifidx(struct netlink_callback *cb)
188 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
189 nl80211_fam.attrbuf, nl80211_fam.maxattr,
194 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
197 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
203 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
204 struct netlink_callback *cb,
205 struct cfg80211_registered_device **rdev,
206 struct net_device **dev)
208 int ifidx = cb->args[0];
212 ifidx = nl80211_get_ifidx(cb);
220 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
226 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
238 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
240 cfg80211_unlock_rdev(rdev);
245 static bool is_valid_ie_attr(const struct nlattr *attr)
253 pos = nla_data(attr);
274 /* message building helper */
275 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
278 /* since there is no private header just add the generic one */
279 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
282 static int nl80211_msg_put_channel(struct sk_buff *msg,
283 struct ieee80211_channel *chan)
285 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
288 if (chan->flags & IEEE80211_CHAN_DISABLED)
289 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
290 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
291 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
292 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
293 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
294 if (chan->flags & IEEE80211_CHAN_RADAR)
295 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
297 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
298 DBM_TO_MBM(chan->max_power));
306 /* netlink command implementations */
315 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
317 struct nlattr *tb[NL80211_KEY_MAX + 1];
318 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
323 k->def = !!tb[NL80211_KEY_DEFAULT];
324 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
326 if (tb[NL80211_KEY_IDX])
327 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
329 if (tb[NL80211_KEY_DATA]) {
330 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
331 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
334 if (tb[NL80211_KEY_SEQ]) {
335 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
336 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
339 if (tb[NL80211_KEY_CIPHER])
340 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
342 if (tb[NL80211_KEY_TYPE]) {
343 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
344 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
351 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
353 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
354 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
355 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
358 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
359 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
360 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
363 if (info->attrs[NL80211_ATTR_KEY_IDX])
364 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
366 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
367 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
369 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
370 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
372 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
373 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
374 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
381 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
385 memset(k, 0, sizeof(*k));
389 if (info->attrs[NL80211_ATTR_KEY])
390 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
392 err = nl80211_parse_key_old(info, k);
397 if (k->def && k->defmgmt)
402 if (k->idx < 4 || k->idx > 5)
405 if (k->idx < 0 || k->idx > 3)
408 if (k->idx < 0 || k->idx > 5)
416 static struct cfg80211_cached_keys *
417 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
420 struct key_parse parse;
422 struct cfg80211_cached_keys *result;
423 int rem, err, def = 0;
425 result = kzalloc(sizeof(*result), GFP_KERNEL);
427 return ERR_PTR(-ENOMEM);
430 result->defmgmt = -1;
432 nla_for_each_nested(key, keys, rem) {
433 memset(&parse, 0, sizeof(parse));
436 err = nl80211_parse_key_new(key, &parse);
442 if (parse.idx < 0 || parse.idx > 4)
448 result->def = parse.idx;
449 } else if (parse.defmgmt)
451 err = cfg80211_validate_key_settings(rdev, &parse.p,
452 parse.idx, false, NULL);
455 result->params[parse.idx].cipher = parse.p.cipher;
456 result->params[parse.idx].key_len = parse.p.key_len;
457 result->params[parse.idx].key = result->data[parse.idx];
458 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
467 static int nl80211_key_allowed(struct wireless_dev *wdev)
469 ASSERT_WDEV_LOCK(wdev);
471 switch (wdev->iftype) {
472 case NL80211_IFTYPE_AP:
473 case NL80211_IFTYPE_AP_VLAN:
474 case NL80211_IFTYPE_P2P_GO:
476 case NL80211_IFTYPE_ADHOC:
477 if (!wdev->current_bss)
480 case NL80211_IFTYPE_STATION:
481 case NL80211_IFTYPE_P2P_CLIENT:
482 if (wdev->sme_state != CFG80211_SME_CONNECTED)
492 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
493 struct cfg80211_registered_device *dev)
496 struct nlattr *nl_bands, *nl_band;
497 struct nlattr *nl_freqs, *nl_freq;
498 struct nlattr *nl_rates, *nl_rate;
499 struct nlattr *nl_modes;
500 struct nlattr *nl_cmds;
501 enum ieee80211_band band;
502 struct ieee80211_channel *chan;
503 struct ieee80211_rate *rate;
505 u16 ifmodes = dev->wiphy.interface_modes;
506 const struct ieee80211_txrx_stypes *mgmt_stypes =
507 dev->wiphy.mgmt_stypes;
509 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
513 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
514 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
516 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
517 cfg80211_rdev_list_generation);
519 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
520 dev->wiphy.retry_short);
521 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
522 dev->wiphy.retry_long);
523 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
524 dev->wiphy.frag_threshold);
525 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
526 dev->wiphy.rts_threshold);
527 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
528 dev->wiphy.coverage_class);
530 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
531 dev->wiphy.max_scan_ssids);
532 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
533 dev->wiphy.max_scan_ie_len);
535 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
536 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
538 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
539 sizeof(u32) * dev->wiphy.n_cipher_suites,
540 dev->wiphy.cipher_suites);
542 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
543 dev->wiphy.max_num_pmkids);
545 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
546 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
548 nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
550 goto nla_put_failure;
555 NLA_PUT_FLAG(msg, i);
560 nla_nest_end(msg, nl_modes);
562 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
564 goto nla_put_failure;
566 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
567 if (!dev->wiphy.bands[band])
570 nl_band = nla_nest_start(msg, band);
572 goto nla_put_failure;
575 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
576 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
577 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
578 &dev->wiphy.bands[band]->ht_cap.mcs);
579 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
580 dev->wiphy.bands[band]->ht_cap.cap);
581 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
582 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
583 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
584 dev->wiphy.bands[band]->ht_cap.ampdu_density);
587 /* add frequencies */
588 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
590 goto nla_put_failure;
592 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
593 nl_freq = nla_nest_start(msg, i);
595 goto nla_put_failure;
597 chan = &dev->wiphy.bands[band]->channels[i];
599 if (nl80211_msg_put_channel(msg, chan))
600 goto nla_put_failure;
602 nla_nest_end(msg, nl_freq);
605 nla_nest_end(msg, nl_freqs);
608 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
610 goto nla_put_failure;
612 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
613 nl_rate = nla_nest_start(msg, i);
615 goto nla_put_failure;
617 rate = &dev->wiphy.bands[band]->bitrates[i];
618 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
620 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
622 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
624 nla_nest_end(msg, nl_rate);
627 nla_nest_end(msg, nl_rates);
629 nla_nest_end(msg, nl_band);
631 nla_nest_end(msg, nl_bands);
633 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
635 goto nla_put_failure;
640 if (dev->ops->op) { \
642 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
646 CMD(add_virtual_intf, NEW_INTERFACE);
647 CMD(change_virtual_intf, SET_INTERFACE);
648 CMD(add_key, NEW_KEY);
649 CMD(add_beacon, NEW_BEACON);
650 CMD(add_station, NEW_STATION);
651 CMD(add_mpath, NEW_MPATH);
652 CMD(set_mesh_params, SET_MESH_PARAMS);
653 CMD(change_bss, SET_BSS);
654 CMD(auth, AUTHENTICATE);
655 CMD(assoc, ASSOCIATE);
656 CMD(deauth, DEAUTHENTICATE);
657 CMD(disassoc, DISASSOCIATE);
658 CMD(join_ibss, JOIN_IBSS);
659 CMD(set_pmksa, SET_PMKSA);
660 CMD(del_pmksa, DEL_PMKSA);
661 CMD(flush_pmksa, FLUSH_PMKSA);
662 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
663 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
665 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
667 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
669 CMD(set_channel, SET_CHANNEL);
670 CMD(set_wds_peer, SET_WDS_PEER);
674 if (dev->ops->connect || dev->ops->auth) {
676 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
679 if (dev->ops->disconnect || dev->ops->deauth) {
681 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
684 nla_nest_end(msg, nl_cmds);
688 struct nlattr *nl_ftypes, *nl_ifs;
689 enum nl80211_iftype ift;
691 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
693 goto nla_put_failure;
695 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
696 nl_ftypes = nla_nest_start(msg, ift);
698 goto nla_put_failure;
700 stypes = mgmt_stypes[ift].tx;
703 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
704 (i << 4) | IEEE80211_FTYPE_MGMT);
708 nla_nest_end(msg, nl_ftypes);
711 nla_nest_end(msg, nl_ifs);
713 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
715 goto nla_put_failure;
717 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
718 nl_ftypes = nla_nest_start(msg, ift);
720 goto nla_put_failure;
722 stypes = mgmt_stypes[ift].rx;
725 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
726 (i << 4) | IEEE80211_FTYPE_MGMT);
730 nla_nest_end(msg, nl_ftypes);
732 nla_nest_end(msg, nl_ifs);
735 return genlmsg_end(msg, hdr);
738 genlmsg_cancel(msg, hdr);
742 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
745 int start = cb->args[0];
746 struct cfg80211_registered_device *dev;
748 mutex_lock(&cfg80211_mutex);
749 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
750 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
754 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
755 cb->nlh->nlmsg_seq, NLM_F_MULTI,
761 mutex_unlock(&cfg80211_mutex);
768 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
771 struct cfg80211_registered_device *dev = info->user_ptr[0];
773 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
777 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
782 return genlmsg_reply(msg, info);
785 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
786 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
787 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
788 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
789 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
790 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
793 static int parse_txq_params(struct nlattr *tb[],
794 struct ieee80211_txq_params *txq_params)
796 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
797 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
798 !tb[NL80211_TXQ_ATTR_AIFS])
801 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
802 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
803 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
804 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
805 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
810 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
813 * You can only set the channel explicitly for AP, mesh
814 * and WDS type interfaces; all others have their channel
815 * managed via their respective "establish a connection"
816 * command (connect, join, ...)
818 * Monitors are special as they are normally slaved to
819 * whatever else is going on, so they behave as though
820 * you tried setting the wiphy channel itself.
823 wdev->iftype == NL80211_IFTYPE_AP ||
824 wdev->iftype == NL80211_IFTYPE_WDS ||
825 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
826 wdev->iftype == NL80211_IFTYPE_MONITOR ||
827 wdev->iftype == NL80211_IFTYPE_P2P_GO;
830 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
831 struct wireless_dev *wdev,
832 struct genl_info *info)
834 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
838 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
841 if (!nl80211_can_set_dev_channel(wdev))
844 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
845 channel_type = nla_get_u32(info->attrs[
846 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
847 if (channel_type != NL80211_CHAN_NO_HT &&
848 channel_type != NL80211_CHAN_HT20 &&
849 channel_type != NL80211_CHAN_HT40PLUS &&
850 channel_type != NL80211_CHAN_HT40MINUS)
854 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
856 mutex_lock(&rdev->devlist_mtx);
859 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
862 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
864 mutex_unlock(&rdev->devlist_mtx);
869 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
871 struct cfg80211_registered_device *rdev = info->user_ptr[0];
872 struct net_device *netdev = info->user_ptr[1];
874 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
877 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
879 struct cfg80211_registered_device *rdev;
880 struct wireless_dev *wdev;
881 struct net_device *dev;
885 if (!info->attrs[NL80211_ATTR_MAC])
890 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
894 wdev = dev->ieee80211_ptr;
896 if (netif_running(dev)) {
901 if (!rdev->ops->set_wds_peer) {
906 if (wdev->iftype != NL80211_IFTYPE_WDS) {
911 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
912 err = rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
915 cfg80211_unlock_rdev(rdev);
924 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
926 struct cfg80211_registered_device *rdev;
927 struct net_device *netdev = NULL;
928 struct wireless_dev *wdev;
929 int result = 0, rem_txq_params = 0;
930 struct nlattr *nl_txq_params;
932 u8 retry_short = 0, retry_long = 0;
933 u32 frag_threshold = 0, rts_threshold = 0;
934 u8 coverage_class = 0;
937 * Try to find the wiphy and netdev. Normally this
938 * function shouldn't need the netdev, but this is
939 * done for backward compatibility -- previously
940 * setting the channel was done per wiphy, but now
941 * it is per netdev. Previous userland like hostapd
942 * also passed a netdev to set_wiphy, so that it is
943 * possible to let that go to the right netdev!
945 mutex_lock(&cfg80211_mutex);
947 if (info->attrs[NL80211_ATTR_IFINDEX]) {
948 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
950 netdev = dev_get_by_index(genl_info_net(info), ifindex);
951 if (netdev && netdev->ieee80211_ptr) {
952 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
953 mutex_lock(&rdev->mtx);
959 rdev = __cfg80211_rdev_from_info(info);
961 mutex_unlock(&cfg80211_mutex);
962 return PTR_ERR(rdev);
968 mutex_lock(&rdev->mtx);
969 } else if (netif_running(netdev) &&
970 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
971 wdev = netdev->ieee80211_ptr;
976 * end workaround code, by now the rdev is available
977 * and locked, and wdev may or may not be NULL.
980 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
981 result = cfg80211_dev_rename(
982 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
984 mutex_unlock(&cfg80211_mutex);
989 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
990 struct ieee80211_txq_params txq_params;
991 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
993 if (!rdev->ops->set_txq_params) {
994 result = -EOPNOTSUPP;
998 nla_for_each_nested(nl_txq_params,
999 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1001 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1002 nla_data(nl_txq_params),
1003 nla_len(nl_txq_params),
1005 result = parse_txq_params(tb, &txq_params);
1009 result = rdev->ops->set_txq_params(&rdev->wiphy,
1016 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1017 result = __nl80211_set_channel(rdev, wdev, info);
1022 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1023 enum nl80211_tx_power_setting type;
1026 if (!rdev->ops->set_tx_power) {
1027 result = -EOPNOTSUPP;
1031 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1032 type = nla_get_u32(info->attrs[idx]);
1034 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1035 (type != NL80211_TX_POWER_AUTOMATIC)) {
1040 if (type != NL80211_TX_POWER_AUTOMATIC) {
1041 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1042 mbm = nla_get_u32(info->attrs[idx]);
1045 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1052 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1053 retry_short = nla_get_u8(
1054 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1055 if (retry_short == 0) {
1059 changed |= WIPHY_PARAM_RETRY_SHORT;
1062 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1063 retry_long = nla_get_u8(
1064 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1065 if (retry_long == 0) {
1069 changed |= WIPHY_PARAM_RETRY_LONG;
1072 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1073 frag_threshold = nla_get_u32(
1074 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1075 if (frag_threshold < 256) {
1079 if (frag_threshold != (u32) -1) {
1081 * Fragments (apart from the last one) are required to
1082 * have even length. Make the fragmentation code
1083 * simpler by stripping LSB should someone try to use
1084 * odd threshold value.
1086 frag_threshold &= ~0x1;
1088 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1091 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1092 rts_threshold = nla_get_u32(
1093 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1094 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1097 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1098 coverage_class = nla_get_u8(
1099 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1100 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1104 u8 old_retry_short, old_retry_long;
1105 u32 old_frag_threshold, old_rts_threshold;
1106 u8 old_coverage_class;
1108 if (!rdev->ops->set_wiphy_params) {
1109 result = -EOPNOTSUPP;
1113 old_retry_short = rdev->wiphy.retry_short;
1114 old_retry_long = rdev->wiphy.retry_long;
1115 old_frag_threshold = rdev->wiphy.frag_threshold;
1116 old_rts_threshold = rdev->wiphy.rts_threshold;
1117 old_coverage_class = rdev->wiphy.coverage_class;
1119 if (changed & WIPHY_PARAM_RETRY_SHORT)
1120 rdev->wiphy.retry_short = retry_short;
1121 if (changed & WIPHY_PARAM_RETRY_LONG)
1122 rdev->wiphy.retry_long = retry_long;
1123 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1124 rdev->wiphy.frag_threshold = frag_threshold;
1125 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1126 rdev->wiphy.rts_threshold = rts_threshold;
1127 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1128 rdev->wiphy.coverage_class = coverage_class;
1130 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1132 rdev->wiphy.retry_short = old_retry_short;
1133 rdev->wiphy.retry_long = old_retry_long;
1134 rdev->wiphy.frag_threshold = old_frag_threshold;
1135 rdev->wiphy.rts_threshold = old_rts_threshold;
1136 rdev->wiphy.coverage_class = old_coverage_class;
1141 mutex_unlock(&rdev->mtx);
1148 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1149 struct cfg80211_registered_device *rdev,
1150 struct net_device *dev)
1154 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1158 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1159 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1160 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1161 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1163 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1164 rdev->devlist_generation ^
1165 (cfg80211_rdev_list_generation << 2));
1167 return genlmsg_end(msg, hdr);
1170 genlmsg_cancel(msg, hdr);
1174 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1178 int wp_start = cb->args[0];
1179 int if_start = cb->args[1];
1180 struct cfg80211_registered_device *rdev;
1181 struct wireless_dev *wdev;
1183 mutex_lock(&cfg80211_mutex);
1184 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1185 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1187 if (wp_idx < wp_start) {
1193 mutex_lock(&rdev->devlist_mtx);
1194 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1195 if (if_idx < if_start) {
1199 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1200 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1201 rdev, wdev->netdev) < 0) {
1202 mutex_unlock(&rdev->devlist_mtx);
1207 mutex_unlock(&rdev->devlist_mtx);
1212 mutex_unlock(&cfg80211_mutex);
1214 cb->args[0] = wp_idx;
1215 cb->args[1] = if_idx;
1220 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1222 struct sk_buff *msg;
1223 struct cfg80211_registered_device *dev = info->user_ptr[0];
1224 struct net_device *netdev = info->user_ptr[1];
1226 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1230 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1236 return genlmsg_reply(msg, info);
1239 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1240 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1241 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1242 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1243 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1244 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1247 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1249 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1257 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1258 nla, mntr_flags_policy))
1261 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1263 *mntrflags |= (1<<flag);
1268 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1269 struct net_device *netdev, u8 use_4addr,
1270 enum nl80211_iftype iftype)
1273 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1279 case NL80211_IFTYPE_AP_VLAN:
1280 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1283 case NL80211_IFTYPE_STATION:
1284 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1294 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1296 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1297 struct vif_params params;
1299 enum nl80211_iftype otype, ntype;
1300 struct net_device *dev = info->user_ptr[1];
1301 u32 _flags, *flags = NULL;
1302 bool change = false;
1304 memset(¶ms, 0, sizeof(params));
1306 otype = ntype = dev->ieee80211_ptr->iftype;
1308 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1309 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1312 if (ntype > NL80211_IFTYPE_MAX)
1316 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1317 if (ntype != NL80211_IFTYPE_MESH_POINT)
1319 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
1320 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1324 if (info->attrs[NL80211_ATTR_4ADDR]) {
1325 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1327 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1331 params.use_4addr = -1;
1334 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1335 if (ntype != NL80211_IFTYPE_MONITOR)
1337 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1347 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms);
1351 if (!err && params.use_4addr != -1)
1352 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1357 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1359 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1360 struct vif_params params;
1362 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1365 memset(¶ms, 0, sizeof(params));
1367 if (!info->attrs[NL80211_ATTR_IFNAME])
1370 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1371 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1372 if (type > NL80211_IFTYPE_MAX)
1376 if (!rdev->ops->add_virtual_intf ||
1377 !(rdev->wiphy.interface_modes & (1 << type)))
1380 if (type == NL80211_IFTYPE_MESH_POINT &&
1381 info->attrs[NL80211_ATTR_MESH_ID]) {
1382 params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
1383 params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1386 if (info->attrs[NL80211_ATTR_4ADDR]) {
1387 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1388 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1393 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1394 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1396 err = rdev->ops->add_virtual_intf(&rdev->wiphy,
1397 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1398 type, err ? NULL : &flags, ¶ms);
1403 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1405 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1406 struct net_device *dev = info->user_ptr[1];
1408 if (!rdev->ops->del_virtual_intf)
1411 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1414 struct get_key_cookie {
1415 struct sk_buff *msg;
1420 static void get_key_callback(void *c, struct key_params *params)
1423 struct get_key_cookie *cookie = c;
1426 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1427 params->key_len, params->key);
1430 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1431 params->seq_len, params->seq);
1434 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1437 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1439 goto nla_put_failure;
1442 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1443 params->key_len, params->key);
1446 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1447 params->seq_len, params->seq);
1450 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1453 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1455 nla_nest_end(cookie->msg, key);
1462 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1464 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1466 struct net_device *dev = info->user_ptr[1];
1468 const u8 *mac_addr = NULL;
1470 struct get_key_cookie cookie = {
1474 struct sk_buff *msg;
1476 if (info->attrs[NL80211_ATTR_KEY_IDX])
1477 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1482 if (info->attrs[NL80211_ATTR_MAC])
1483 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1485 pairwise = !!mac_addr;
1486 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1487 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1488 if (kt >= NUM_NL80211_KEYTYPES)
1490 if (kt != NL80211_KEYTYPE_GROUP &&
1491 kt != NL80211_KEYTYPE_PAIRWISE)
1493 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1496 if (!rdev->ops->get_key)
1499 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1503 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1504 NL80211_CMD_NEW_KEY);
1506 return PTR_ERR(hdr);
1509 cookie.idx = key_idx;
1511 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1512 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1514 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1516 if (pairwise && mac_addr &&
1517 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1520 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1521 mac_addr, &cookie, get_key_callback);
1527 goto nla_put_failure;
1529 genlmsg_end(msg, hdr);
1530 return genlmsg_reply(msg, info);
1539 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1541 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1542 struct key_parse key;
1544 struct net_device *dev = info->user_ptr[1];
1545 int (*func)(struct wiphy *wiphy, struct net_device *netdev,
1548 err = nl80211_parse_key(info, &key);
1555 /* only support setting default key */
1556 if (!key.def && !key.defmgmt)
1560 func = rdev->ops->set_default_key;
1562 func = rdev->ops->set_default_mgmt_key;
1567 wdev_lock(dev->ieee80211_ptr);
1568 err = nl80211_key_allowed(dev->ieee80211_ptr);
1570 err = func(&rdev->wiphy, dev, key.idx);
1572 #ifdef CONFIG_CFG80211_WEXT
1574 if (func == rdev->ops->set_default_key)
1575 dev->ieee80211_ptr->wext.default_key = key.idx;
1577 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1580 wdev_unlock(dev->ieee80211_ptr);
1585 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1587 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1589 struct net_device *dev = info->user_ptr[1];
1590 struct key_parse key;
1591 const u8 *mac_addr = NULL;
1593 err = nl80211_parse_key(info, &key);
1600 if (info->attrs[NL80211_ATTR_MAC])
1601 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1603 if (key.type == -1) {
1605 key.type = NL80211_KEYTYPE_PAIRWISE;
1607 key.type = NL80211_KEYTYPE_GROUP;
1611 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1612 key.type != NL80211_KEYTYPE_GROUP)
1615 if (!rdev->ops->add_key)
1618 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1619 key.type == NL80211_KEYTYPE_PAIRWISE,
1623 wdev_lock(dev->ieee80211_ptr);
1624 err = nl80211_key_allowed(dev->ieee80211_ptr);
1626 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1627 key.type == NL80211_KEYTYPE_PAIRWISE,
1629 wdev_unlock(dev->ieee80211_ptr);
1634 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1636 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1638 struct net_device *dev = info->user_ptr[1];
1639 u8 *mac_addr = NULL;
1640 struct key_parse key;
1642 err = nl80211_parse_key(info, &key);
1646 if (info->attrs[NL80211_ATTR_MAC])
1647 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1649 if (key.type == -1) {
1651 key.type = NL80211_KEYTYPE_PAIRWISE;
1653 key.type = NL80211_KEYTYPE_GROUP;
1657 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1658 key.type != NL80211_KEYTYPE_GROUP)
1661 if (!rdev->ops->del_key)
1664 wdev_lock(dev->ieee80211_ptr);
1665 err = nl80211_key_allowed(dev->ieee80211_ptr);
1667 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
1668 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1672 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
1673 key.type == NL80211_KEYTYPE_PAIRWISE,
1676 #ifdef CONFIG_CFG80211_WEXT
1678 if (key.idx == dev->ieee80211_ptr->wext.default_key)
1679 dev->ieee80211_ptr->wext.default_key = -1;
1680 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1681 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1684 wdev_unlock(dev->ieee80211_ptr);
1689 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1691 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1692 struct beacon_parameters *info);
1693 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1694 struct net_device *dev = info->user_ptr[1];
1695 struct beacon_parameters params;
1698 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1701 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1702 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
1705 switch (info->genlhdr->cmd) {
1706 case NL80211_CMD_NEW_BEACON:
1707 /* these are required for NEW_BEACON */
1708 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1709 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1710 !info->attrs[NL80211_ATTR_BEACON_HEAD])
1713 call = rdev->ops->add_beacon;
1715 case NL80211_CMD_SET_BEACON:
1716 call = rdev->ops->set_beacon;
1726 memset(¶ms, 0, sizeof(params));
1728 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
1730 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1734 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
1735 params.dtim_period =
1736 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1740 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1741 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1743 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1747 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1748 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1750 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1757 return call(&rdev->wiphy, dev, ¶ms);
1760 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1762 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1763 struct net_device *dev = info->user_ptr[1];
1765 if (!rdev->ops->del_beacon)
1768 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1769 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
1772 return rdev->ops->del_beacon(&rdev->wiphy, dev);
1775 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
1776 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
1777 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
1778 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
1779 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
1782 static int parse_station_flags(struct genl_info *info,
1783 struct station_parameters *params)
1785 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
1790 * Try parsing the new attribute first so userspace
1791 * can specify both for older kernels.
1793 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
1795 struct nl80211_sta_flag_update *sta_flags;
1797 sta_flags = nla_data(nla);
1798 params->sta_flags_mask = sta_flags->mask;
1799 params->sta_flags_set = sta_flags->set;
1800 if ((params->sta_flags_mask |
1801 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
1806 /* if present, parse the old attribute */
1808 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
1812 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1813 nla, sta_flags_policy))
1816 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
1817 params->sta_flags_mask &= ~1;
1819 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1821 params->sta_flags_set |= (1<<flag);
1826 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1827 int flags, struct net_device *dev,
1828 const u8 *mac_addr, struct station_info *sinfo)
1831 struct nlattr *sinfoattr, *txrate;
1834 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1838 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1839 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1841 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
1843 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1845 goto nla_put_failure;
1846 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
1847 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
1848 sinfo->inactive_time);
1849 if (sinfo->filled & STATION_INFO_RX_BYTES)
1850 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
1852 if (sinfo->filled & STATION_INFO_TX_BYTES)
1853 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1855 if (sinfo->filled & STATION_INFO_LLID)
1856 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
1858 if (sinfo->filled & STATION_INFO_PLID)
1859 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
1861 if (sinfo->filled & STATION_INFO_PLINK_STATE)
1862 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
1863 sinfo->plink_state);
1864 if (sinfo->filled & STATION_INFO_SIGNAL)
1865 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
1867 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
1868 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
1870 goto nla_put_failure;
1872 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
1873 bitrate = cfg80211_calculate_bitrate(&sinfo->txrate);
1875 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
1877 if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
1878 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
1880 if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
1881 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
1882 if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
1883 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
1885 nla_nest_end(msg, txrate);
1887 if (sinfo->filled & STATION_INFO_RX_PACKETS)
1888 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
1890 if (sinfo->filled & STATION_INFO_TX_PACKETS)
1891 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
1893 nla_nest_end(msg, sinfoattr);
1895 return genlmsg_end(msg, hdr);
1898 genlmsg_cancel(msg, hdr);
1902 static int nl80211_dump_station(struct sk_buff *skb,
1903 struct netlink_callback *cb)
1905 struct station_info sinfo;
1906 struct cfg80211_registered_device *dev;
1907 struct net_device *netdev;
1908 u8 mac_addr[ETH_ALEN];
1909 int sta_idx = cb->args[1];
1912 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
1916 if (!dev->ops->dump_station) {
1922 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
1929 if (nl80211_send_station(skb,
1930 NETLINK_CB(cb->skb).pid,
1931 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1941 cb->args[1] = sta_idx;
1944 nl80211_finish_netdev_dump(dev);
1949 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
1951 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1952 struct net_device *dev = info->user_ptr[1];
1953 struct station_info sinfo;
1954 struct sk_buff *msg;
1955 u8 *mac_addr = NULL;
1958 memset(&sinfo, 0, sizeof(sinfo));
1960 if (!info->attrs[NL80211_ATTR_MAC])
1963 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1965 if (!rdev->ops->get_station)
1968 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
1972 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1976 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
1977 dev, mac_addr, &sinfo) < 0) {
1982 return genlmsg_reply(msg, info);
1986 * Get vlan interface making sure it is running and on the right wiphy.
1988 static int get_vlan(struct genl_info *info,
1989 struct cfg80211_registered_device *rdev,
1990 struct net_device **vlan)
1992 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
1996 *vlan = dev_get_by_index(genl_info_net(info),
1997 nla_get_u32(vlanattr));
2000 if (!(*vlan)->ieee80211_ptr)
2002 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2004 if (!netif_running(*vlan))
2010 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2012 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2014 struct net_device *dev = info->user_ptr[1];
2015 struct station_parameters params;
2016 u8 *mac_addr = NULL;
2018 memset(¶ms, 0, sizeof(params));
2020 params.listen_interval = -1;
2022 if (info->attrs[NL80211_ATTR_STA_AID])
2025 if (!info->attrs[NL80211_ATTR_MAC])
2028 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2030 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2031 params.supported_rates =
2032 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2033 params.supported_rates_len =
2034 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2037 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2038 params.listen_interval =
2039 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2041 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2043 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2045 if (parse_station_flags(info, ¶ms))
2048 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2049 params.plink_action =
2050 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2052 err = get_vlan(info, rdev, ¶ms.vlan);
2056 /* validate settings */
2059 switch (dev->ieee80211_ptr->iftype) {
2060 case NL80211_IFTYPE_AP:
2061 case NL80211_IFTYPE_AP_VLAN:
2062 case NL80211_IFTYPE_P2P_GO:
2063 /* disallow mesh-specific things */
2064 if (params.plink_action)
2067 case NL80211_IFTYPE_P2P_CLIENT:
2068 case NL80211_IFTYPE_STATION:
2069 /* disallow everything but AUTHORIZED flag */
2070 if (params.plink_action)
2074 if (params.supported_rates)
2078 if (params.listen_interval >= 0)
2080 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2083 case NL80211_IFTYPE_MESH_POINT:
2084 /* disallow things mesh doesn't support */
2089 if (params.listen_interval >= 0)
2091 if (params.supported_rates)
2093 if (params.sta_flags_mask)
2103 if (!rdev->ops->change_station) {
2108 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, ¶ms);
2112 dev_put(params.vlan);
2117 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2119 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2121 struct net_device *dev = info->user_ptr[1];
2122 struct station_parameters params;
2123 u8 *mac_addr = NULL;
2125 memset(¶ms, 0, sizeof(params));
2127 if (!info->attrs[NL80211_ATTR_MAC])
2130 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2133 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2136 if (!info->attrs[NL80211_ATTR_STA_AID])
2139 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2140 params.supported_rates =
2141 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2142 params.supported_rates_len =
2143 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2144 params.listen_interval =
2145 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2147 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2148 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2151 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2153 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2155 if (parse_station_flags(info, ¶ms))
2158 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2159 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2160 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2163 err = get_vlan(info, rdev, ¶ms.vlan);
2167 /* validate settings */
2170 if (!rdev->ops->add_station) {
2175 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, ¶ms);
2179 dev_put(params.vlan);
2183 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2185 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2186 struct net_device *dev = info->user_ptr[1];
2187 u8 *mac_addr = NULL;
2189 if (info->attrs[NL80211_ATTR_MAC])
2190 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2192 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2193 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2194 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2195 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2198 if (!rdev->ops->del_station)
2201 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2204 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2205 int flags, struct net_device *dev,
2206 u8 *dst, u8 *next_hop,
2207 struct mpath_info *pinfo)
2210 struct nlattr *pinfoattr;
2212 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2216 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2217 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2218 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2220 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2222 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2224 goto nla_put_failure;
2225 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2226 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2228 if (pinfo->filled & MPATH_INFO_SN)
2229 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2231 if (pinfo->filled & MPATH_INFO_METRIC)
2232 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2234 if (pinfo->filled & MPATH_INFO_EXPTIME)
2235 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2237 if (pinfo->filled & MPATH_INFO_FLAGS)
2238 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2240 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2241 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2242 pinfo->discovery_timeout);
2243 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2244 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2245 pinfo->discovery_retries);
2247 nla_nest_end(msg, pinfoattr);
2249 return genlmsg_end(msg, hdr);
2252 genlmsg_cancel(msg, hdr);
2256 static int nl80211_dump_mpath(struct sk_buff *skb,
2257 struct netlink_callback *cb)
2259 struct mpath_info pinfo;
2260 struct cfg80211_registered_device *dev;
2261 struct net_device *netdev;
2263 u8 next_hop[ETH_ALEN];
2264 int path_idx = cb->args[1];
2267 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2271 if (!dev->ops->dump_mpath) {
2276 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2282 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2283 dst, next_hop, &pinfo);
2289 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2290 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2291 netdev, dst, next_hop,
2300 cb->args[1] = path_idx;
2303 nl80211_finish_netdev_dump(dev);
2307 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2309 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2311 struct net_device *dev = info->user_ptr[1];
2312 struct mpath_info pinfo;
2313 struct sk_buff *msg;
2315 u8 next_hop[ETH_ALEN];
2317 memset(&pinfo, 0, sizeof(pinfo));
2319 if (!info->attrs[NL80211_ATTR_MAC])
2322 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2324 if (!rdev->ops->get_mpath)
2327 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2330 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2334 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2338 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2339 dev, dst, next_hop, &pinfo) < 0) {
2344 return genlmsg_reply(msg, info);
2347 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2349 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2350 struct net_device *dev = info->user_ptr[1];
2352 u8 *next_hop = NULL;
2354 if (!info->attrs[NL80211_ATTR_MAC])
2357 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2360 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2361 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2363 if (!rdev->ops->change_mpath)
2366 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2369 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2372 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2374 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2375 struct net_device *dev = info->user_ptr[1];
2377 u8 *next_hop = NULL;
2379 if (!info->attrs[NL80211_ATTR_MAC])
2382 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2385 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2386 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2388 if (!rdev->ops->add_mpath)
2391 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2394 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2397 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2399 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2400 struct net_device *dev = info->user_ptr[1];
2403 if (info->attrs[NL80211_ATTR_MAC])
2404 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2406 if (!rdev->ops->del_mpath)
2409 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2412 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2414 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2415 struct net_device *dev = info->user_ptr[1];
2416 struct bss_parameters params;
2418 memset(¶ms, 0, sizeof(params));
2419 /* default to not changing parameters */
2420 params.use_cts_prot = -1;
2421 params.use_short_preamble = -1;
2422 params.use_short_slot_time = -1;
2423 params.ap_isolate = -1;
2425 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2426 params.use_cts_prot =
2427 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2428 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2429 params.use_short_preamble =
2430 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2431 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2432 params.use_short_slot_time =
2433 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2434 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2435 params.basic_rates =
2436 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2437 params.basic_rates_len =
2438 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2440 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2441 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2443 if (!rdev->ops->change_bss)
2446 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2447 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2450 return rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms);
2453 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2454 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2455 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2456 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2457 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2458 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2459 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2462 static int parse_reg_rule(struct nlattr *tb[],
2463 struct ieee80211_reg_rule *reg_rule)
2465 struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
2466 struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
2468 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2470 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2472 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2474 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2476 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2479 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2481 freq_range->start_freq_khz =
2482 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2483 freq_range->end_freq_khz =
2484 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2485 freq_range->max_bandwidth_khz =
2486 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2488 power_rule->max_eirp =
2489 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2491 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2492 power_rule->max_antenna_gain =
2493 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2498 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2504 * You should only get this when cfg80211 hasn't yet initialized
2505 * completely when built-in to the kernel right between the time
2506 * window between nl80211_init() and regulatory_init(), if that is
2509 mutex_lock(&cfg80211_mutex);
2510 if (unlikely(!cfg80211_regdomain)) {
2511 mutex_unlock(&cfg80211_mutex);
2512 return -EINPROGRESS;
2514 mutex_unlock(&cfg80211_mutex);
2516 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2519 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2521 r = regulatory_hint_user(data);
2526 static int nl80211_get_mesh_params(struct sk_buff *skb,
2527 struct genl_info *info)
2529 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2530 struct mesh_config cur_params;
2532 struct net_device *dev = info->user_ptr[1];
2534 struct nlattr *pinfoattr;
2535 struct sk_buff *msg;
2537 if (!rdev->ops->get_mesh_params)
2540 /* Get the mesh params */
2541 err = rdev->ops->get_mesh_params(&rdev->wiphy, dev, &cur_params);
2545 /* Draw up a netlink message to send back */
2546 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2549 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2550 NL80211_CMD_GET_MESH_PARAMS);
2552 goto nla_put_failure;
2553 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
2555 goto nla_put_failure;
2556 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2557 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2558 cur_params.dot11MeshRetryTimeout);
2559 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2560 cur_params.dot11MeshConfirmTimeout);
2561 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2562 cur_params.dot11MeshHoldingTimeout);
2563 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2564 cur_params.dot11MeshMaxPeerLinks);
2565 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2566 cur_params.dot11MeshMaxRetries);
2567 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2568 cur_params.dot11MeshTTL);
2569 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2570 cur_params.auto_open_plinks);
2571 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2572 cur_params.dot11MeshHWMPmaxPREQretries);
2573 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2574 cur_params.path_refresh_time);
2575 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2576 cur_params.min_discovery_timeout);
2577 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2578 cur_params.dot11MeshHWMPactivePathTimeout);
2579 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2580 cur_params.dot11MeshHWMPpreqMinInterval);
2581 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2582 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2583 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
2584 cur_params.dot11MeshHWMPRootMode);
2585 nla_nest_end(msg, pinfoattr);
2586 genlmsg_end(msg, hdr);
2587 return genlmsg_reply(msg, info);
2590 genlmsg_cancel(msg, hdr);
2595 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2597 if (table[attr_num]) {\
2598 cfg.param = nla_fn(table[attr_num]); \
2599 mask |= (1 << (attr_num - 1)); \
2603 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
2604 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2605 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2606 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2607 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2608 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2609 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2610 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2612 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2613 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2614 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2615 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2616 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2617 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2620 static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
2623 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2624 struct net_device *dev = info->user_ptr[1];
2625 struct mesh_config cfg;
2626 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2627 struct nlattr *parent_attr;
2629 parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
2632 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2633 parent_attr, nl80211_meshconf_params_policy))
2636 if (!rdev->ops->set_mesh_params)
2639 /* This makes sure that there aren't more than 32 mesh config
2640 * parameters (otherwise our bitfield scheme would not work.) */
2641 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2643 /* Fill in the params struct */
2645 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2646 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2647 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2648 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2649 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2650 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2651 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2652 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2653 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2654 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2655 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2656 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2657 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2658 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2659 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2660 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2662 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2663 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2664 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2665 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2667 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2668 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2670 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2671 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2673 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2674 dot11MeshHWMPnetDiameterTraversalTime,
2675 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2677 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2678 dot11MeshHWMPRootMode, mask,
2679 NL80211_MESHCONF_HWMP_ROOTMODE,
2683 return rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask);
2686 #undef FILL_IN_MESH_PARAM_IF_SET
2688 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2690 struct sk_buff *msg;
2692 struct nlattr *nl_reg_rules;
2696 mutex_lock(&cfg80211_mutex);
2698 if (!cfg80211_regdomain)
2701 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2707 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2708 NL80211_CMD_GET_REG);
2710 goto nla_put_failure;
2712 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2713 cfg80211_regdomain->alpha2);
2715 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2717 goto nla_put_failure;
2719 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2720 struct nlattr *nl_reg_rule;
2721 const struct ieee80211_reg_rule *reg_rule;
2722 const struct ieee80211_freq_range *freq_range;
2723 const struct ieee80211_power_rule *power_rule;
2725 reg_rule = &cfg80211_regdomain->reg_rules[i];
2726 freq_range = ®_rule->freq_range;
2727 power_rule = ®_rule->power_rule;
2729 nl_reg_rule = nla_nest_start(msg, i);
2731 goto nla_put_failure;
2733 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2735 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2736 freq_range->start_freq_khz);
2737 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2738 freq_range->end_freq_khz);
2739 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2740 freq_range->max_bandwidth_khz);
2741 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
2742 power_rule->max_antenna_gain);
2743 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
2744 power_rule->max_eirp);
2746 nla_nest_end(msg, nl_reg_rule);
2749 nla_nest_end(msg, nl_reg_rules);
2751 genlmsg_end(msg, hdr);
2752 err = genlmsg_reply(msg, info);
2756 genlmsg_cancel(msg, hdr);
2760 mutex_unlock(&cfg80211_mutex);
2764 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
2766 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
2767 struct nlattr *nl_reg_rule;
2768 char *alpha2 = NULL;
2769 int rem_reg_rules = 0, r = 0;
2770 u32 num_rules = 0, rule_idx = 0, size_of_regd;
2771 struct ieee80211_regdomain *rd = NULL;
2773 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2776 if (!info->attrs[NL80211_ATTR_REG_RULES])
2779 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2781 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2784 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
2788 mutex_lock(&cfg80211_mutex);
2790 if (!reg_is_valid_request(alpha2)) {
2795 size_of_regd = sizeof(struct ieee80211_regdomain) +
2796 (num_rules * sizeof(struct ieee80211_reg_rule));
2798 rd = kzalloc(size_of_regd, GFP_KERNEL);
2804 rd->n_reg_rules = num_rules;
2805 rd->alpha2[0] = alpha2[0];
2806 rd->alpha2[1] = alpha2[1];
2808 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2810 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
2811 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
2813 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
2819 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
2825 BUG_ON(rule_idx != num_rules);
2829 mutex_unlock(&cfg80211_mutex);
2834 mutex_unlock(&cfg80211_mutex);
2839 static int validate_scan_freqs(struct nlattr *freqs)
2841 struct nlattr *attr1, *attr2;
2842 int n_channels = 0, tmp1, tmp2;
2844 nla_for_each_nested(attr1, freqs, tmp1) {
2847 * Some hardware has a limited channel list for
2848 * scanning, and it is pretty much nonsensical
2849 * to scan for a channel twice, so disallow that
2850 * and don't require drivers to check that the
2851 * channel list they get isn't longer than what
2852 * they can scan, as long as they can scan all
2853 * the channels they registered at once.
2855 nla_for_each_nested(attr2, freqs, tmp2)
2856 if (attr1 != attr2 &&
2857 nla_get_u32(attr1) == nla_get_u32(attr2))
2864 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
2866 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2867 struct net_device *dev = info->user_ptr[1];
2868 struct cfg80211_scan_request *request;
2869 struct cfg80211_ssid *ssid;
2870 struct ieee80211_channel *channel;
2871 struct nlattr *attr;
2872 struct wiphy *wiphy;
2873 int err, tmp, n_ssids = 0, n_channels, i;
2874 enum ieee80211_band band;
2877 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
2880 wiphy = &rdev->wiphy;
2882 if (!rdev->ops->scan)
2888 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2889 n_channels = validate_scan_freqs(
2890 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
2896 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
2897 if (wiphy->bands[band])
2898 n_channels += wiphy->bands[band]->n_channels;
2901 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
2902 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
2905 if (n_ssids > wiphy->max_scan_ssids)
2908 if (info->attrs[NL80211_ATTR_IE])
2909 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2913 if (ie_len > wiphy->max_scan_ie_len)
2916 request = kzalloc(sizeof(*request)
2917 + sizeof(*ssid) * n_ssids
2918 + sizeof(channel) * n_channels
2919 + ie_len, GFP_KERNEL);
2924 request->ssids = (void *)&request->channels[n_channels];
2925 request->n_ssids = n_ssids;
2928 request->ie = (void *)(request->ssids + n_ssids);
2930 request->ie = (void *)(request->channels + n_channels);
2934 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
2935 /* user specified, bail out if channel not found */
2936 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
2937 struct ieee80211_channel *chan;
2939 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
2946 /* ignore disabled channels */
2947 if (chan->flags & IEEE80211_CHAN_DISABLED)
2950 request->channels[i] = chan;
2955 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2957 if (!wiphy->bands[band])
2959 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
2960 struct ieee80211_channel *chan;
2962 chan = &wiphy->bands[band]->channels[j];
2964 if (chan->flags & IEEE80211_CHAN_DISABLED)
2967 request->channels[i] = chan;
2978 request->n_channels = i;
2981 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
2982 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
2983 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
2987 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
2988 request->ssids[i].ssid_len = nla_len(attr);
2993 if (info->attrs[NL80211_ATTR_IE]) {
2994 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2995 memcpy((void *)request->ie,
2996 nla_data(info->attrs[NL80211_ATTR_IE]),
3001 request->wiphy = &rdev->wiphy;
3003 rdev->scan_req = request;
3004 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3007 nl80211_send_scan_start(rdev, dev);
3011 rdev->scan_req = NULL;
3018 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
3019 struct cfg80211_registered_device *rdev,
3020 struct wireless_dev *wdev,
3021 struct cfg80211_internal_bss *intbss)
3023 struct cfg80211_bss *res = &intbss->pub;
3028 ASSERT_WDEV_LOCK(wdev);
3030 hdr = nl80211hdr_put(msg, pid, seq, flags,
3031 NL80211_CMD_NEW_SCAN_RESULTS);
3035 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3036 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3038 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3040 goto nla_put_failure;
3041 if (!is_zero_ether_addr(res->bssid))
3042 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3043 if (res->information_elements && res->len_information_elements)
3044 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3045 res->len_information_elements,
3046 res->information_elements);
3047 if (res->beacon_ies && res->len_beacon_ies &&
3048 res->beacon_ies != res->information_elements)
3049 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3050 res->len_beacon_ies, res->beacon_ies);
3052 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3053 if (res->beacon_interval)
3054 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3055 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3056 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3057 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3058 jiffies_to_msecs(jiffies - intbss->ts));
3060 switch (rdev->wiphy.signal_type) {
3061 case CFG80211_SIGNAL_TYPE_MBM:
3062 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3064 case CFG80211_SIGNAL_TYPE_UNSPEC:
3065 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3071 switch (wdev->iftype) {
3072 case NL80211_IFTYPE_P2P_CLIENT:
3073 case NL80211_IFTYPE_STATION:
3074 if (intbss == wdev->current_bss)
3075 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3076 NL80211_BSS_STATUS_ASSOCIATED);
3077 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3078 if (intbss != wdev->auth_bsses[i])
3080 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3081 NL80211_BSS_STATUS_AUTHENTICATED);
3085 case NL80211_IFTYPE_ADHOC:
3086 if (intbss == wdev->current_bss)
3087 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3088 NL80211_BSS_STATUS_IBSS_JOINED);
3094 nla_nest_end(msg, bss);
3096 return genlmsg_end(msg, hdr);
3099 genlmsg_cancel(msg, hdr);
3103 static int nl80211_dump_scan(struct sk_buff *skb,
3104 struct netlink_callback *cb)
3106 struct cfg80211_registered_device *rdev;
3107 struct net_device *dev;
3108 struct cfg80211_internal_bss *scan;
3109 struct wireless_dev *wdev;
3110 int start = cb->args[1], idx = 0;
3113 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3117 wdev = dev->ieee80211_ptr;
3120 spin_lock_bh(&rdev->bss_lock);
3121 cfg80211_bss_expire(rdev);
3123 list_for_each_entry(scan, &rdev->bss_list, list) {
3126 if (nl80211_send_bss(skb,
3127 NETLINK_CB(cb->skb).pid,
3128 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3129 rdev, wdev, scan) < 0) {
3135 spin_unlock_bh(&rdev->bss_lock);
3139 nl80211_finish_netdev_dump(rdev);
3144 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
3145 int flags, struct net_device *dev,
3146 struct survey_info *survey)
3149 struct nlattr *infoattr;
3151 /* Survey without a channel doesn't make sense */
3152 if (!survey->channel)
3155 hdr = nl80211hdr_put(msg, pid, seq, flags,
3156 NL80211_CMD_NEW_SURVEY_RESULTS);
3160 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3162 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
3164 goto nla_put_failure;
3166 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
3167 survey->channel->center_freq);
3168 if (survey->filled & SURVEY_INFO_NOISE_DBM)
3169 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
3171 if (survey->filled & SURVEY_INFO_IN_USE)
3172 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
3174 nla_nest_end(msg, infoattr);
3176 return genlmsg_end(msg, hdr);
3179 genlmsg_cancel(msg, hdr);
3183 static int nl80211_dump_survey(struct sk_buff *skb,
3184 struct netlink_callback *cb)
3186 struct survey_info survey;
3187 struct cfg80211_registered_device *dev;
3188 struct net_device *netdev;
3189 int survey_idx = cb->args[1];
3192 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3196 if (!dev->ops->dump_survey) {
3202 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
3209 if (nl80211_send_survey(skb,
3210 NETLINK_CB(cb->skb).pid,
3211 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3219 cb->args[1] = survey_idx;
3222 nl80211_finish_netdev_dump(dev);
3226 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3228 return auth_type <= NL80211_AUTHTYPE_MAX;
3231 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3233 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3234 NL80211_WPA_VERSION_2));
3237 static bool nl80211_valid_akm_suite(u32 akm)
3239 return akm == WLAN_AKM_SUITE_8021X ||
3240 akm == WLAN_AKM_SUITE_PSK;
3243 static bool nl80211_valid_cipher_suite(u32 cipher)
3245 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3246 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3247 cipher == WLAN_CIPHER_SUITE_TKIP ||
3248 cipher == WLAN_CIPHER_SUITE_CCMP ||
3249 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
3253 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3255 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3256 struct net_device *dev = info->user_ptr[1];
3257 struct ieee80211_channel *chan;
3258 const u8 *bssid, *ssid, *ie = NULL;
3259 int err, ssid_len, ie_len = 0;
3260 enum nl80211_auth_type auth_type;
3261 struct key_parse key;
3262 bool local_state_change;
3264 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3267 if (!info->attrs[NL80211_ATTR_MAC])
3270 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3273 if (!info->attrs[NL80211_ATTR_SSID])
3276 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3279 err = nl80211_parse_key(info, &key);
3284 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
3286 if (!key.p.key || !key.p.key_len)
3288 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3289 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3290 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3291 key.p.key_len != WLAN_KEY_LEN_WEP104))
3303 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
3304 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
3313 if (!rdev->ops->auth)
3316 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3317 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3320 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3321 chan = ieee80211_get_channel(&rdev->wiphy,
3322 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3323 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3326 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3327 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3329 if (info->attrs[NL80211_ATTR_IE]) {
3330 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3331 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3334 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3335 if (!nl80211_valid_auth_type(auth_type))
3338 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3340 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
3341 ssid, ssid_len, ie, ie_len,
3342 key.p.key, key.p.key_len, key.idx,
3343 local_state_change);
3346 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
3347 struct genl_info *info,
3348 struct cfg80211_crypto_settings *settings,
3351 memset(settings, 0, sizeof(*settings));
3353 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3355 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
3357 proto = nla_get_u16(
3358 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
3359 settings->control_port_ethertype = cpu_to_be16(proto);
3360 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
3363 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
3364 settings->control_port_no_encrypt = true;
3366 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
3368 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
3372 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3373 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3374 settings->n_ciphers_pairwise = len / sizeof(u32);
3376 if (len % sizeof(u32))
3379 if (settings->n_ciphers_pairwise > cipher_limit)
3382 memcpy(settings->ciphers_pairwise, data, len);
3384 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3385 if (!nl80211_valid_cipher_suite(
3386 settings->ciphers_pairwise[i]))
3390 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
3391 settings->cipher_group =
3392 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
3393 if (!nl80211_valid_cipher_suite(settings->cipher_group))
3397 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
3398 settings->wpa_versions =
3399 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
3400 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
3404 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
3408 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
3409 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
3410 settings->n_akm_suites = len / sizeof(u32);
3412 if (len % sizeof(u32))
3415 memcpy(settings->akm_suites, data, len);
3417 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3418 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
3425 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
3427 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3428 struct net_device *dev = info->user_ptr[1];
3429 struct cfg80211_crypto_settings crypto;
3430 struct ieee80211_channel *chan;
3431 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
3432 int err, ssid_len, ie_len = 0;
3433 bool use_mfp = false;
3435 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3438 if (!info->attrs[NL80211_ATTR_MAC] ||
3439 !info->attrs[NL80211_ATTR_SSID] ||
3440 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
3443 if (!rdev->ops->assoc)
3446 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3447 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3450 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))
3457 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3458 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3460 if (info->attrs[NL80211_ATTR_IE]) {
3461 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3462 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3465 if (info->attrs[NL80211_ATTR_USE_MFP]) {
3466 enum nl80211_mfp mfp =
3467 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
3468 if (mfp == NL80211_MFP_REQUIRED)
3470 else if (mfp != NL80211_MFP_NO)
3474 if (info->attrs[NL80211_ATTR_PREV_BSSID])
3475 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
3477 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
3479 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
3480 ssid, ssid_len, ie, ie_len, use_mfp,
3486 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3488 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3489 struct net_device *dev = info->user_ptr[1];
3490 const u8 *ie = NULL, *bssid;
3493 bool local_state_change;
3495 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3498 if (!info->attrs[NL80211_ATTR_MAC])
3501 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3504 if (!rdev->ops->deauth)
3507 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3508 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3511 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3513 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3514 if (reason_code == 0) {
3515 /* Reason Code 0 is reserved */
3519 if (info->attrs[NL80211_ATTR_IE]) {
3520 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3521 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3524 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3526 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
3527 local_state_change);
3530 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3532 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3533 struct net_device *dev = info->user_ptr[1];
3534 const u8 *ie = NULL, *bssid;
3537 bool local_state_change;
3539 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3542 if (!info->attrs[NL80211_ATTR_MAC])
3545 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3548 if (!rdev->ops->disassoc)
3551 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3552 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3555 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3557 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3558 if (reason_code == 0) {
3559 /* Reason Code 0 is reserved */
3563 if (info->attrs[NL80211_ATTR_IE]) {
3564 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3565 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3568 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3570 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
3571 local_state_change);
3574 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3576 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3577 struct net_device *dev = info->user_ptr[1];
3578 struct cfg80211_ibss_params ibss;
3579 struct wiphy *wiphy;
3580 struct cfg80211_cached_keys *connkeys = NULL;
3583 memset(&ibss, 0, sizeof(ibss));
3585 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3588 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3589 !info->attrs[NL80211_ATTR_SSID] ||
3590 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3593 ibss.beacon_interval = 100;
3595 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3596 ibss.beacon_interval =
3597 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3598 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3602 if (!rdev->ops->join_ibss)
3605 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
3608 wiphy = &rdev->wiphy;
3610 if (info->attrs[NL80211_ATTR_MAC])
3611 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3612 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3613 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3615 if (info->attrs[NL80211_ATTR_IE]) {
3616 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3617 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3620 ibss.channel = ieee80211_get_channel(wiphy,
3621 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3622 if (!ibss.channel ||
3623 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
3624 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
3627 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
3628 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3630 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3632 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3634 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3635 struct ieee80211_supported_band *sband =
3636 wiphy->bands[ibss.channel->band];
3642 for (i = 0; i < n_rates; i++) {
3643 int rate = (rates[i] & 0x7f) * 5;
3646 for (j = 0; j < sband->n_bitrates; j++) {
3647 if (sband->bitrates[j].bitrate == rate) {
3649 ibss.basic_rates |= BIT(j);
3658 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
3659 connkeys = nl80211_parse_connkeys(rdev,
3660 info->attrs[NL80211_ATTR_KEYS]);
3661 if (IS_ERR(connkeys))
3662 return PTR_ERR(connkeys);
3665 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
3671 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3673 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3674 struct net_device *dev = info->user_ptr[1];
3676 if (!rdev->ops->leave_ibss)
3679 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
3682 return cfg80211_leave_ibss(rdev, dev, false);
3685 #ifdef CONFIG_NL80211_TESTMODE
3686 static struct genl_multicast_group nl80211_testmode_mcgrp = {
3690 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
3692 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3695 if (!info->attrs[NL80211_ATTR_TESTDATA])
3699 if (rdev->ops->testmode_cmd) {
3700 rdev->testmode_info = info;
3701 err = rdev->ops->testmode_cmd(&rdev->wiphy,
3702 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
3703 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
3704 rdev->testmode_info = NULL;
3710 static struct sk_buff *
3711 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
3712 int approxlen, u32 pid, u32 seq, gfp_t gfp)
3714 struct sk_buff *skb;
3716 struct nlattr *data;
3718 skb = nlmsg_new(approxlen + 100, gfp);
3722 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
3728 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3729 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
3731 ((void **)skb->cb)[0] = rdev;
3732 ((void **)skb->cb)[1] = hdr;
3733 ((void **)skb->cb)[2] = data;
3742 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
3745 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
3747 if (WARN_ON(!rdev->testmode_info))
3750 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
3751 rdev->testmode_info->snd_pid,
3752 rdev->testmode_info->snd_seq,
3755 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
3757 int cfg80211_testmode_reply(struct sk_buff *skb)
3759 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
3760 void *hdr = ((void **)skb->cb)[1];
3761 struct nlattr *data = ((void **)skb->cb)[2];
3763 if (WARN_ON(!rdev->testmode_info)) {
3768 nla_nest_end(skb, data);
3769 genlmsg_end(skb, hdr);
3770 return genlmsg_reply(skb, rdev->testmode_info);
3772 EXPORT_SYMBOL(cfg80211_testmode_reply);
3774 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
3775 int approxlen, gfp_t gfp)
3777 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
3779 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
3781 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
3783 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
3785 void *hdr = ((void **)skb->cb)[1];
3786 struct nlattr *data = ((void **)skb->cb)[2];
3788 nla_nest_end(skb, data);
3789 genlmsg_end(skb, hdr);
3790 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
3792 EXPORT_SYMBOL(cfg80211_testmode_event);
3795 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
3797 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3798 struct net_device *dev = info->user_ptr[1];
3799 struct cfg80211_connect_params connect;
3800 struct wiphy *wiphy;
3801 struct cfg80211_cached_keys *connkeys = NULL;
3804 memset(&connect, 0, sizeof(connect));
3806 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3809 if (!info->attrs[NL80211_ATTR_SSID] ||
3810 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3813 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3815 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3816 if (!nl80211_valid_auth_type(connect.auth_type))
3819 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3821 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
3823 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
3824 NL80211_MAX_NR_CIPHER_SUITES);
3828 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3829 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3832 wiphy = &rdev->wiphy;
3834 if (info->attrs[NL80211_ATTR_MAC])
3835 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3836 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3837 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3839 if (info->attrs[NL80211_ATTR_IE]) {
3840 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3841 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3844 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3846 ieee80211_get_channel(wiphy,
3847 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3848 if (!connect.channel ||
3849 connect.channel->flags & IEEE80211_CHAN_DISABLED)
3853 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
3854 connkeys = nl80211_parse_connkeys(rdev,
3855 info->attrs[NL80211_ATTR_KEYS]);
3856 if (IS_ERR(connkeys))
3857 return PTR_ERR(connkeys);
3860 err = cfg80211_connect(rdev, dev, &connect, connkeys);
3866 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
3868 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3869 struct net_device *dev = info->user_ptr[1];
3872 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3873 reason = WLAN_REASON_DEAUTH_LEAVING;
3875 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3880 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3881 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3884 return cfg80211_disconnect(rdev, dev, reason, true);
3887 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
3889 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3894 if (!info->attrs[NL80211_ATTR_PID])
3897 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
3899 net = get_net_ns_by_pid(pid);
3901 return PTR_ERR(net);
3905 /* check if anything to do */
3906 if (!net_eq(wiphy_net(&rdev->wiphy), net))
3907 err = cfg80211_switch_netns(rdev, net);
3913 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
3915 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3916 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
3917 struct cfg80211_pmksa *pmksa) = NULL;
3918 struct net_device *dev = info->user_ptr[1];
3919 struct cfg80211_pmksa pmksa;
3921 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
3923 if (!info->attrs[NL80211_ATTR_MAC])
3926 if (!info->attrs[NL80211_ATTR_PMKID])
3929 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
3930 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3932 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3933 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3936 switch (info->genlhdr->cmd) {
3937 case NL80211_CMD_SET_PMKSA:
3938 rdev_ops = rdev->ops->set_pmksa;
3940 case NL80211_CMD_DEL_PMKSA:
3941 rdev_ops = rdev->ops->del_pmksa;
3951 return rdev_ops(&rdev->wiphy, dev, &pmksa);
3954 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
3956 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3957 struct net_device *dev = info->user_ptr[1];
3959 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3960 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3963 if (!rdev->ops->flush_pmksa)
3966 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
3969 static int nl80211_remain_on_channel(struct sk_buff *skb,
3970 struct genl_info *info)
3972 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3973 struct net_device *dev = info->user_ptr[1];
3974 struct ieee80211_channel *chan;
3975 struct sk_buff *msg;
3978 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
3982 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3983 !info->attrs[NL80211_ATTR_DURATION])
3986 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
3989 * We should be on that channel for at least one jiffie,
3990 * and more than 5 seconds seems excessive.
3992 if (!duration || !msecs_to_jiffies(duration) || duration > 5000)
3995 if (!rdev->ops->remain_on_channel)
3998 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3999 channel_type = nla_get_u32(
4000 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4001 if (channel_type != NL80211_CHAN_NO_HT &&
4002 channel_type != NL80211_CHAN_HT20 &&
4003 channel_type != NL80211_CHAN_HT40PLUS &&
4004 channel_type != NL80211_CHAN_HT40MINUS)
4008 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4009 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4013 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4017 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4018 NL80211_CMD_REMAIN_ON_CHANNEL);
4025 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
4026 channel_type, duration, &cookie);
4031 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4033 genlmsg_end(msg, hdr);
4035 return genlmsg_reply(msg, info);
4044 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
4045 struct genl_info *info)
4047 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4048 struct net_device *dev = info->user_ptr[1];
4051 if (!info->attrs[NL80211_ATTR_COOKIE])
4054 if (!rdev->ops->cancel_remain_on_channel)
4057 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4059 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
4062 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4063 u8 *rates, u8 rates_len)
4068 for (i = 0; i < rates_len; i++) {
4069 int rate = (rates[i] & 0x7f) * 5;
4071 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4072 struct ieee80211_rate *srate =
4073 &sband->bitrates[ridx];
4074 if (rate == srate->bitrate) {
4079 if (ridx == sband->n_bitrates)
4080 return 0; /* rate not found */
4086 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4087 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4088 .len = NL80211_MAX_SUPP_RATES },
4091 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
4092 struct genl_info *info)
4094 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4095 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4096 struct cfg80211_bitrate_mask mask;
4098 struct net_device *dev = info->user_ptr[1];
4099 struct nlattr *tx_rates;
4100 struct ieee80211_supported_band *sband;
4102 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
4105 if (!rdev->ops->set_bitrate_mask)
4108 memset(&mask, 0, sizeof(mask));
4109 /* Default to all rates enabled */
4110 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
4111 sband = rdev->wiphy.bands[i];
4112 mask.control[i].legacy =
4113 sband ? (1 << sband->n_bitrates) - 1 : 0;
4117 * The nested attribute uses enum nl80211_band as the index. This maps
4118 * directly to the enum ieee80211_band values used in cfg80211.
4120 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
4122 enum ieee80211_band band = nla_type(tx_rates);
4123 if (band < 0 || band >= IEEE80211_NUM_BANDS)
4125 sband = rdev->wiphy.bands[band];
4128 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
4129 nla_len(tx_rates), nl80211_txattr_policy);
4130 if (tb[NL80211_TXRATE_LEGACY]) {
4131 mask.control[band].legacy = rateset_to_mask(
4133 nla_data(tb[NL80211_TXRATE_LEGACY]),
4134 nla_len(tb[NL80211_TXRATE_LEGACY]));
4135 if (mask.control[band].legacy == 0)
4140 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
4143 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
4145 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4146 struct net_device *dev = info->user_ptr[1];
4147 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
4149 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
4152 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
4153 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
4155 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4156 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4157 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4158 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4159 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4160 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4163 /* not much point in registering if we can't reply */
4164 if (!rdev->ops->mgmt_tx)
4167 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
4169 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
4170 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
4173 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
4175 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4176 struct net_device *dev = info->user_ptr[1];
4177 struct ieee80211_channel *chan;
4178 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4179 bool channel_type_valid = false;
4184 struct sk_buff *msg;
4186 if (!info->attrs[NL80211_ATTR_FRAME] ||
4187 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4190 if (!rdev->ops->mgmt_tx)
4193 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4194 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4195 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4196 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4197 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4198 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4201 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4202 channel_type = nla_get_u32(
4203 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4204 if (channel_type != NL80211_CHAN_NO_HT &&
4205 channel_type != NL80211_CHAN_HT20 &&
4206 channel_type != NL80211_CHAN_HT40PLUS &&
4207 channel_type != NL80211_CHAN_HT40MINUS)
4209 channel_type_valid = true;
4212 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4213 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4217 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4221 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4228 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, channel_type,
4230 nla_data(info->attrs[NL80211_ATTR_FRAME]),
4231 nla_len(info->attrs[NL80211_ATTR_FRAME]),
4236 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4238 genlmsg_end(msg, hdr);
4239 return genlmsg_reply(msg, info);
4248 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
4250 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4251 struct wireless_dev *wdev;
4252 struct net_device *dev = info->user_ptr[1];
4257 if (!info->attrs[NL80211_ATTR_PS_STATE])
4260 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
4262 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
4265 wdev = dev->ieee80211_ptr;
4267 if (!rdev->ops->set_power_mgmt)
4270 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
4272 if (state == wdev->ps)
4275 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
4282 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
4284 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4285 enum nl80211_ps_state ps_state;
4286 struct wireless_dev *wdev;
4287 struct net_device *dev = info->user_ptr[1];
4288 struct sk_buff *msg;
4292 wdev = dev->ieee80211_ptr;
4294 if (!rdev->ops->set_power_mgmt)
4297 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4301 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4302 NL80211_CMD_GET_POWER_SAVE);
4309 ps_state = NL80211_PS_ENABLED;
4311 ps_state = NL80211_PS_DISABLED;
4313 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
4315 genlmsg_end(msg, hdr);
4316 return genlmsg_reply(msg, info);
4325 static struct nla_policy
4326 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
4327 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
4328 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
4329 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
4332 static int nl80211_set_cqm_rssi(struct genl_info *info,
4333 s32 threshold, u32 hysteresis)
4335 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4336 struct wireless_dev *wdev;
4337 struct net_device *dev = info->user_ptr[1];
4342 wdev = dev->ieee80211_ptr;
4344 if (!rdev->ops->set_cqm_rssi_config)
4347 if (wdev->iftype != NL80211_IFTYPE_STATION &&
4348 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
4351 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
4352 threshold, hysteresis);
4355 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
4357 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
4361 cqm = info->attrs[NL80211_ATTR_CQM];
4367 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
4368 nl80211_attr_cqm_policy);
4372 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
4373 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
4376 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
4377 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
4378 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
4386 #define NL80211_FLAG_NEED_WIPHY 0x01
4387 #define NL80211_FLAG_NEED_NETDEV 0x02
4388 #define NL80211_FLAG_NEED_RTNL 0x04
4389 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
4390 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
4391 NL80211_FLAG_CHECK_NETDEV_UP)
4393 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
4394 struct genl_info *info)
4396 struct cfg80211_registered_device *rdev;
4397 struct net_device *dev;
4399 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
4404 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
4405 rdev = cfg80211_get_dev_from_info(info);
4409 return PTR_ERR(rdev);
4411 info->user_ptr[0] = rdev;
4412 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
4413 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4419 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
4420 !netif_running(dev)) {
4421 cfg80211_unlock_rdev(rdev);
4427 info->user_ptr[0] = rdev;
4428 info->user_ptr[1] = dev;
4434 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
4435 struct genl_info *info)
4437 if (info->user_ptr[0])
4438 cfg80211_unlock_rdev(info->user_ptr[0]);
4439 if (info->user_ptr[1])
4440 dev_put(info->user_ptr[1]);
4441 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
4445 static struct genl_ops nl80211_ops[] = {
4447 .cmd = NL80211_CMD_GET_WIPHY,
4448 .doit = nl80211_get_wiphy,
4449 .dumpit = nl80211_dump_wiphy,
4450 .policy = nl80211_policy,
4451 /* can be retrieved by unprivileged users */
4452 .internal_flags = NL80211_FLAG_NEED_WIPHY,
4455 .cmd = NL80211_CMD_SET_WIPHY,
4456 .doit = nl80211_set_wiphy,
4457 .policy = nl80211_policy,
4458 .flags = GENL_ADMIN_PERM,
4459 .internal_flags = NL80211_FLAG_NEED_RTNL,
4462 .cmd = NL80211_CMD_GET_INTERFACE,
4463 .doit = nl80211_get_interface,
4464 .dumpit = nl80211_dump_interface,
4465 .policy = nl80211_policy,
4466 /* can be retrieved by unprivileged users */
4467 .internal_flags = NL80211_FLAG_NEED_NETDEV,
4470 .cmd = NL80211_CMD_SET_INTERFACE,
4471 .doit = nl80211_set_interface,
4472 .policy = nl80211_policy,
4473 .flags = GENL_ADMIN_PERM,
4474 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4475 NL80211_FLAG_NEED_RTNL,
4478 .cmd = NL80211_CMD_NEW_INTERFACE,
4479 .doit = nl80211_new_interface,
4480 .policy = nl80211_policy,
4481 .flags = GENL_ADMIN_PERM,
4482 .internal_flags = NL80211_FLAG_NEED_WIPHY |
4483 NL80211_FLAG_NEED_RTNL,
4486 .cmd = NL80211_CMD_DEL_INTERFACE,
4487 .doit = nl80211_del_interface,
4488 .policy = nl80211_policy,
4489 .flags = GENL_ADMIN_PERM,
4490 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4491 NL80211_FLAG_NEED_RTNL,
4494 .cmd = NL80211_CMD_GET_KEY,
4495 .doit = nl80211_get_key,
4496 .policy = nl80211_policy,
4497 .flags = GENL_ADMIN_PERM,
4498 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4499 NL80211_FLAG_NEED_RTNL,
4502 .cmd = NL80211_CMD_SET_KEY,
4503 .doit = nl80211_set_key,
4504 .policy = nl80211_policy,
4505 .flags = GENL_ADMIN_PERM,
4506 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4507 NL80211_FLAG_NEED_RTNL,
4510 .cmd = NL80211_CMD_NEW_KEY,
4511 .doit = nl80211_new_key,
4512 .policy = nl80211_policy,
4513 .flags = GENL_ADMIN_PERM,
4514 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4515 NL80211_FLAG_NEED_RTNL,
4518 .cmd = NL80211_CMD_DEL_KEY,
4519 .doit = nl80211_del_key,
4520 .policy = nl80211_policy,
4521 .flags = GENL_ADMIN_PERM,
4522 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4523 NL80211_FLAG_NEED_RTNL,
4526 .cmd = NL80211_CMD_SET_BEACON,
4527 .policy = nl80211_policy,
4528 .flags = GENL_ADMIN_PERM,
4529 .doit = nl80211_addset_beacon,
4530 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4531 NL80211_FLAG_NEED_RTNL,
4534 .cmd = NL80211_CMD_NEW_BEACON,
4535 .policy = nl80211_policy,
4536 .flags = GENL_ADMIN_PERM,
4537 .doit = nl80211_addset_beacon,
4538 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4539 NL80211_FLAG_NEED_RTNL,
4542 .cmd = NL80211_CMD_DEL_BEACON,
4543 .policy = nl80211_policy,
4544 .flags = GENL_ADMIN_PERM,
4545 .doit = nl80211_del_beacon,
4546 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4547 NL80211_FLAG_NEED_RTNL,
4550 .cmd = NL80211_CMD_GET_STATION,
4551 .doit = nl80211_get_station,
4552 .dumpit = nl80211_dump_station,
4553 .policy = nl80211_policy,
4554 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4555 NL80211_FLAG_NEED_RTNL,
4558 .cmd = NL80211_CMD_SET_STATION,
4559 .doit = nl80211_set_station,
4560 .policy = nl80211_policy,
4561 .flags = GENL_ADMIN_PERM,
4562 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4563 NL80211_FLAG_NEED_RTNL,
4566 .cmd = NL80211_CMD_NEW_STATION,
4567 .doit = nl80211_new_station,
4568 .policy = nl80211_policy,
4569 .flags = GENL_ADMIN_PERM,
4570 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4571 NL80211_FLAG_NEED_RTNL,
4574 .cmd = NL80211_CMD_DEL_STATION,
4575 .doit = nl80211_del_station,
4576 .policy = nl80211_policy,
4577 .flags = GENL_ADMIN_PERM,
4578 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4579 NL80211_FLAG_NEED_RTNL,
4582 .cmd = NL80211_CMD_GET_MPATH,
4583 .doit = nl80211_get_mpath,
4584 .dumpit = nl80211_dump_mpath,
4585 .policy = nl80211_policy,
4586 .flags = GENL_ADMIN_PERM,
4587 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4588 NL80211_FLAG_NEED_RTNL,
4591 .cmd = NL80211_CMD_SET_MPATH,
4592 .doit = nl80211_set_mpath,
4593 .policy = nl80211_policy,
4594 .flags = GENL_ADMIN_PERM,
4595 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4596 NL80211_FLAG_NEED_RTNL,
4599 .cmd = NL80211_CMD_NEW_MPATH,
4600 .doit = nl80211_new_mpath,
4601 .policy = nl80211_policy,
4602 .flags = GENL_ADMIN_PERM,
4603 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4604 NL80211_FLAG_NEED_RTNL,
4607 .cmd = NL80211_CMD_DEL_MPATH,
4608 .doit = nl80211_del_mpath,
4609 .policy = nl80211_policy,
4610 .flags = GENL_ADMIN_PERM,
4611 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4612 NL80211_FLAG_NEED_RTNL,
4615 .cmd = NL80211_CMD_SET_BSS,
4616 .doit = nl80211_set_bss,
4617 .policy = nl80211_policy,
4618 .flags = GENL_ADMIN_PERM,
4619 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4620 NL80211_FLAG_NEED_RTNL,
4623 .cmd = NL80211_CMD_GET_REG,
4624 .doit = nl80211_get_reg,
4625 .policy = nl80211_policy,
4626 /* can be retrieved by unprivileged users */
4629 .cmd = NL80211_CMD_SET_REG,
4630 .doit = nl80211_set_reg,
4631 .policy = nl80211_policy,
4632 .flags = GENL_ADMIN_PERM,
4635 .cmd = NL80211_CMD_REQ_SET_REG,
4636 .doit = nl80211_req_set_reg,
4637 .policy = nl80211_policy,
4638 .flags = GENL_ADMIN_PERM,
4641 .cmd = NL80211_CMD_GET_MESH_PARAMS,
4642 .doit = nl80211_get_mesh_params,
4643 .policy = nl80211_policy,
4644 /* can be retrieved by unprivileged users */
4645 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4646 NL80211_FLAG_NEED_RTNL,
4649 .cmd = NL80211_CMD_SET_MESH_PARAMS,
4650 .doit = nl80211_set_mesh_params,
4651 .policy = nl80211_policy,
4652 .flags = GENL_ADMIN_PERM,
4653 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4654 NL80211_FLAG_NEED_RTNL,
4657 .cmd = NL80211_CMD_TRIGGER_SCAN,
4658 .doit = nl80211_trigger_scan,
4659 .policy = nl80211_policy,
4660 .flags = GENL_ADMIN_PERM,
4661 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4662 NL80211_FLAG_NEED_RTNL,
4665 .cmd = NL80211_CMD_GET_SCAN,
4666 .policy = nl80211_policy,
4667 .dumpit = nl80211_dump_scan,
4670 .cmd = NL80211_CMD_AUTHENTICATE,
4671 .doit = nl80211_authenticate,
4672 .policy = nl80211_policy,
4673 .flags = GENL_ADMIN_PERM,
4674 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4675 NL80211_FLAG_NEED_RTNL,
4678 .cmd = NL80211_CMD_ASSOCIATE,
4679 .doit = nl80211_associate,
4680 .policy = nl80211_policy,
4681 .flags = GENL_ADMIN_PERM,
4682 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4683 NL80211_FLAG_NEED_RTNL,
4686 .cmd = NL80211_CMD_DEAUTHENTICATE,
4687 .doit = nl80211_deauthenticate,
4688 .policy = nl80211_policy,
4689 .flags = GENL_ADMIN_PERM,
4690 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4691 NL80211_FLAG_NEED_RTNL,
4694 .cmd = NL80211_CMD_DISASSOCIATE,
4695 .doit = nl80211_disassociate,
4696 .policy = nl80211_policy,
4697 .flags = GENL_ADMIN_PERM,
4698 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4699 NL80211_FLAG_NEED_RTNL,
4702 .cmd = NL80211_CMD_JOIN_IBSS,
4703 .doit = nl80211_join_ibss,
4704 .policy = nl80211_policy,
4705 .flags = GENL_ADMIN_PERM,
4706 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4707 NL80211_FLAG_NEED_RTNL,
4710 .cmd = NL80211_CMD_LEAVE_IBSS,
4711 .doit = nl80211_leave_ibss,
4712 .policy = nl80211_policy,
4713 .flags = GENL_ADMIN_PERM,
4714 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4715 NL80211_FLAG_NEED_RTNL,
4717 #ifdef CONFIG_NL80211_TESTMODE
4719 .cmd = NL80211_CMD_TESTMODE,
4720 .doit = nl80211_testmode_do,
4721 .policy = nl80211_policy,
4722 .flags = GENL_ADMIN_PERM,
4723 .internal_flags = NL80211_FLAG_NEED_WIPHY |
4724 NL80211_FLAG_NEED_RTNL,
4728 .cmd = NL80211_CMD_CONNECT,
4729 .doit = nl80211_connect,
4730 .policy = nl80211_policy,
4731 .flags = GENL_ADMIN_PERM,
4732 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4733 NL80211_FLAG_NEED_RTNL,
4736 .cmd = NL80211_CMD_DISCONNECT,
4737 .doit = nl80211_disconnect,
4738 .policy = nl80211_policy,
4739 .flags = GENL_ADMIN_PERM,
4740 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4741 NL80211_FLAG_NEED_RTNL,
4744 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
4745 .doit = nl80211_wiphy_netns,
4746 .policy = nl80211_policy,
4747 .flags = GENL_ADMIN_PERM,
4748 .internal_flags = NL80211_FLAG_NEED_WIPHY |
4749 NL80211_FLAG_NEED_RTNL,
4752 .cmd = NL80211_CMD_GET_SURVEY,
4753 .policy = nl80211_policy,
4754 .dumpit = nl80211_dump_survey,
4757 .cmd = NL80211_CMD_SET_PMKSA,
4758 .doit = nl80211_setdel_pmksa,
4759 .policy = nl80211_policy,
4760 .flags = GENL_ADMIN_PERM,
4761 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4762 NL80211_FLAG_NEED_RTNL,
4765 .cmd = NL80211_CMD_DEL_PMKSA,
4766 .doit = nl80211_setdel_pmksa,
4767 .policy = nl80211_policy,
4768 .flags = GENL_ADMIN_PERM,
4769 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4770 NL80211_FLAG_NEED_RTNL,
4773 .cmd = NL80211_CMD_FLUSH_PMKSA,
4774 .doit = nl80211_flush_pmksa,
4775 .policy = nl80211_policy,
4776 .flags = GENL_ADMIN_PERM,
4777 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4778 NL80211_FLAG_NEED_RTNL,
4781 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
4782 .doit = nl80211_remain_on_channel,
4783 .policy = nl80211_policy,
4784 .flags = GENL_ADMIN_PERM,
4785 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4786 NL80211_FLAG_NEED_RTNL,
4789 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
4790 .doit = nl80211_cancel_remain_on_channel,
4791 .policy = nl80211_policy,
4792 .flags = GENL_ADMIN_PERM,
4793 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4794 NL80211_FLAG_NEED_RTNL,
4797 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
4798 .doit = nl80211_set_tx_bitrate_mask,
4799 .policy = nl80211_policy,
4800 .flags = GENL_ADMIN_PERM,
4801 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4802 NL80211_FLAG_NEED_RTNL,
4805 .cmd = NL80211_CMD_REGISTER_FRAME,
4806 .doit = nl80211_register_mgmt,
4807 .policy = nl80211_policy,
4808 .flags = GENL_ADMIN_PERM,
4809 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4810 NL80211_FLAG_NEED_RTNL,
4813 .cmd = NL80211_CMD_FRAME,
4814 .doit = nl80211_tx_mgmt,
4815 .policy = nl80211_policy,
4816 .flags = GENL_ADMIN_PERM,
4817 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4818 NL80211_FLAG_NEED_RTNL,
4821 .cmd = NL80211_CMD_SET_POWER_SAVE,
4822 .doit = nl80211_set_power_save,
4823 .policy = nl80211_policy,
4824 .flags = GENL_ADMIN_PERM,
4825 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4826 NL80211_FLAG_NEED_RTNL,
4829 .cmd = NL80211_CMD_GET_POWER_SAVE,
4830 .doit = nl80211_get_power_save,
4831 .policy = nl80211_policy,
4832 /* can be retrieved by unprivileged users */
4833 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4834 NL80211_FLAG_NEED_RTNL,
4837 .cmd = NL80211_CMD_SET_CQM,
4838 .doit = nl80211_set_cqm,
4839 .policy = nl80211_policy,
4840 .flags = GENL_ADMIN_PERM,
4841 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4842 NL80211_FLAG_NEED_RTNL,
4845 .cmd = NL80211_CMD_SET_CHANNEL,
4846 .doit = nl80211_set_channel,
4847 .policy = nl80211_policy,
4848 .flags = GENL_ADMIN_PERM,
4849 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4850 NL80211_FLAG_NEED_RTNL,
4853 .cmd = NL80211_CMD_SET_WDS_PEER,
4854 .doit = nl80211_set_wds_peer,
4855 .policy = nl80211_policy,
4856 .flags = GENL_ADMIN_PERM,
4860 static struct genl_multicast_group nl80211_mlme_mcgrp = {
4864 /* multicast groups */
4865 static struct genl_multicast_group nl80211_config_mcgrp = {
4868 static struct genl_multicast_group nl80211_scan_mcgrp = {
4871 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
4872 .name = "regulatory",
4875 /* notification functions */
4877 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
4879 struct sk_buff *msg;
4881 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4885 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
4890 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4891 nl80211_config_mcgrp.id, GFP_KERNEL);
4894 static int nl80211_add_scan_req(struct sk_buff *msg,
4895 struct cfg80211_registered_device *rdev)
4897 struct cfg80211_scan_request *req = rdev->scan_req;
4898 struct nlattr *nest;
4901 ASSERT_RDEV_LOCK(rdev);
4906 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
4908 goto nla_put_failure;
4909 for (i = 0; i < req->n_ssids; i++)
4910 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
4911 nla_nest_end(msg, nest);
4913 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
4915 goto nla_put_failure;
4916 for (i = 0; i < req->n_channels; i++)
4917 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
4918 nla_nest_end(msg, nest);
4921 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
4928 static int nl80211_send_scan_msg(struct sk_buff *msg,
4929 struct cfg80211_registered_device *rdev,
4930 struct net_device *netdev,
4931 u32 pid, u32 seq, int flags,
4936 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
4940 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4941 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
4943 /* ignore errors and send incomplete event anyway */
4944 nl80211_add_scan_req(msg, rdev);
4946 return genlmsg_end(msg, hdr);
4949 genlmsg_cancel(msg, hdr);
4953 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
4954 struct net_device *netdev)
4956 struct sk_buff *msg;
4958 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
4962 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
4963 NL80211_CMD_TRIGGER_SCAN) < 0) {
4968 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4969 nl80211_scan_mcgrp.id, GFP_KERNEL);
4972 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
4973 struct net_device *netdev)
4975 struct sk_buff *msg;
4977 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4981 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
4982 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
4987 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
4988 nl80211_scan_mcgrp.id, GFP_KERNEL);
4991 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
4992 struct net_device *netdev)
4994 struct sk_buff *msg;
4996 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5000 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5001 NL80211_CMD_SCAN_ABORTED) < 0) {
5006 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5007 nl80211_scan_mcgrp.id, GFP_KERNEL);
5011 * This can happen on global regulatory changes or device specific settings
5012 * based on custom world regulatory domains.
5014 void nl80211_send_reg_change_event(struct regulatory_request *request)
5016 struct sk_buff *msg;
5019 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5023 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
5029 /* Userspace can always count this one always being set */
5030 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
5032 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
5033 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5034 NL80211_REGDOM_TYPE_WORLD);
5035 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
5036 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5037 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
5038 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
5040 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5041 NL80211_REGDOM_TYPE_INTERSECTION);
5043 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5044 NL80211_REGDOM_TYPE_COUNTRY);
5045 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
5048 if (wiphy_idx_valid(request->wiphy_idx))
5049 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
5051 if (genlmsg_end(msg, hdr) < 0) {
5057 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
5064 genlmsg_cancel(msg, hdr);
5068 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
5069 struct net_device *netdev,
5070 const u8 *buf, size_t len,
5071 enum nl80211_commands cmd, gfp_t gfp)
5073 struct sk_buff *msg;
5076 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5080 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5086 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5087 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5088 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5090 if (genlmsg_end(msg, hdr) < 0) {
5095 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5096 nl80211_mlme_mcgrp.id, gfp);
5100 genlmsg_cancel(msg, hdr);
5104 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
5105 struct net_device *netdev, const u8 *buf,
5106 size_t len, gfp_t gfp)
5108 nl80211_send_mlme_event(rdev, netdev, buf, len,
5109 NL80211_CMD_AUTHENTICATE, gfp);
5112 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
5113 struct net_device *netdev, const u8 *buf,
5114 size_t len, gfp_t gfp)
5116 nl80211_send_mlme_event(rdev, netdev, buf, len,
5117 NL80211_CMD_ASSOCIATE, gfp);
5120 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
5121 struct net_device *netdev, const u8 *buf,
5122 size_t len, gfp_t gfp)
5124 nl80211_send_mlme_event(rdev, netdev, buf, len,
5125 NL80211_CMD_DEAUTHENTICATE, gfp);
5128 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
5129 struct net_device *netdev, const u8 *buf,
5130 size_t len, gfp_t gfp)
5132 nl80211_send_mlme_event(rdev, netdev, buf, len,
5133 NL80211_CMD_DISASSOCIATE, gfp);
5136 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
5137 struct net_device *netdev, int cmd,
5138 const u8 *addr, gfp_t gfp)
5140 struct sk_buff *msg;
5143 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5147 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5153 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5154 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5155 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
5156 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5158 if (genlmsg_end(msg, hdr) < 0) {
5163 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5164 nl80211_mlme_mcgrp.id, gfp);
5168 genlmsg_cancel(msg, hdr);
5172 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
5173 struct net_device *netdev, const u8 *addr,
5176 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
5180 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
5181 struct net_device *netdev, const u8 *addr,
5184 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
5188 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
5189 struct net_device *netdev, const u8 *bssid,
5190 const u8 *req_ie, size_t req_ie_len,
5191 const u8 *resp_ie, size_t resp_ie_len,
5192 u16 status, gfp_t gfp)
5194 struct sk_buff *msg;
5197 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5201 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
5207 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5208 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5210 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5211 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
5213 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5215 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5217 if (genlmsg_end(msg, hdr) < 0) {
5222 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5223 nl80211_mlme_mcgrp.id, gfp);
5227 genlmsg_cancel(msg, hdr);
5232 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
5233 struct net_device *netdev, const u8 *bssid,
5234 const u8 *req_ie, size_t req_ie_len,
5235 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
5237 struct sk_buff *msg;
5240 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5244 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
5250 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5251 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5252 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5254 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5256 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5258 if (genlmsg_end(msg, hdr) < 0) {
5263 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5264 nl80211_mlme_mcgrp.id, gfp);
5268 genlmsg_cancel(msg, hdr);
5273 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
5274 struct net_device *netdev, u16 reason,
5275 const u8 *ie, size_t ie_len, bool from_ap)
5277 struct sk_buff *msg;
5280 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5284 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
5290 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5291 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5292 if (from_ap && reason)
5293 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
5295 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
5297 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
5299 if (genlmsg_end(msg, hdr) < 0) {
5304 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5305 nl80211_mlme_mcgrp.id, GFP_KERNEL);
5309 genlmsg_cancel(msg, hdr);
5314 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
5315 struct net_device *netdev, const u8 *bssid,
5318 struct sk_buff *msg;
5321 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5325 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
5331 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5332 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5333 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5335 if (genlmsg_end(msg, hdr) < 0) {
5340 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5341 nl80211_mlme_mcgrp.id, gfp);
5345 genlmsg_cancel(msg, hdr);
5349 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
5350 struct net_device *netdev, const u8 *addr,
5351 enum nl80211_key_type key_type, int key_id,
5352 const u8 *tsc, gfp_t gfp)
5354 struct sk_buff *msg;
5357 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5361 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
5367 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5368 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5370 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5371 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
5372 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
5374 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
5376 if (genlmsg_end(msg, hdr) < 0) {
5381 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5382 nl80211_mlme_mcgrp.id, gfp);
5386 genlmsg_cancel(msg, hdr);
5390 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
5391 struct ieee80211_channel *channel_before,
5392 struct ieee80211_channel *channel_after)
5394 struct sk_buff *msg;
5396 struct nlattr *nl_freq;
5398 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
5402 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
5409 * Since we are applying the beacon hint to a wiphy we know its
5410 * wiphy_idx is valid
5412 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
5415 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
5417 goto nla_put_failure;
5418 if (nl80211_msg_put_channel(msg, channel_before))
5419 goto nla_put_failure;
5420 nla_nest_end(msg, nl_freq);
5423 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
5425 goto nla_put_failure;
5426 if (nl80211_msg_put_channel(msg, channel_after))
5427 goto nla_put_failure;
5428 nla_nest_end(msg, nl_freq);
5430 if (genlmsg_end(msg, hdr) < 0) {
5436 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
5443 genlmsg_cancel(msg, hdr);
5447 static void nl80211_send_remain_on_chan_event(
5448 int cmd, struct cfg80211_registered_device *rdev,
5449 struct net_device *netdev, u64 cookie,
5450 struct ieee80211_channel *chan,
5451 enum nl80211_channel_type channel_type,
5452 unsigned int duration, gfp_t gfp)
5454 struct sk_buff *msg;
5457 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5461 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5467 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5468 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5469 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
5470 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
5471 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5473 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
5474 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5476 if (genlmsg_end(msg, hdr) < 0) {
5481 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5482 nl80211_mlme_mcgrp.id, gfp);
5486 genlmsg_cancel(msg, hdr);
5490 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
5491 struct net_device *netdev, u64 cookie,
5492 struct ieee80211_channel *chan,
5493 enum nl80211_channel_type channel_type,
5494 unsigned int duration, gfp_t gfp)
5496 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
5497 rdev, netdev, cookie, chan,
5498 channel_type, duration, gfp);
5501 void nl80211_send_remain_on_channel_cancel(
5502 struct cfg80211_registered_device *rdev, struct net_device *netdev,
5503 u64 cookie, struct ieee80211_channel *chan,
5504 enum nl80211_channel_type channel_type, gfp_t gfp)
5506 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5507 rdev, netdev, cookie, chan,
5508 channel_type, 0, gfp);
5511 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
5512 struct net_device *dev, const u8 *mac_addr,
5513 struct station_info *sinfo, gfp_t gfp)
5515 struct sk_buff *msg;
5517 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5521 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
5526 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5527 nl80211_mlme_mcgrp.id, gfp);
5530 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
5531 struct net_device *netdev, u32 nlpid,
5532 int freq, const u8 *buf, size_t len, gfp_t gfp)
5534 struct sk_buff *msg;
5538 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5542 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
5548 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5549 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5550 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5551 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5553 err = genlmsg_end(msg, hdr);
5559 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
5565 genlmsg_cancel(msg, hdr);
5570 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
5571 struct net_device *netdev, u64 cookie,
5572 const u8 *buf, size_t len, bool ack,
5575 struct sk_buff *msg;
5578 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5582 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
5588 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5589 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5590 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5591 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5593 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
5595 if (genlmsg_end(msg, hdr) < 0) {
5600 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
5604 genlmsg_cancel(msg, hdr);
5609 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
5610 struct net_device *netdev,
5611 enum nl80211_cqm_rssi_threshold_event rssi_event,
5614 struct sk_buff *msg;
5615 struct nlattr *pinfoattr;
5618 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5622 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
5628 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5629 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5631 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
5633 goto nla_put_failure;
5635 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
5638 nla_nest_end(msg, pinfoattr);
5640 if (genlmsg_end(msg, hdr) < 0) {
5645 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5646 nl80211_mlme_mcgrp.id, gfp);
5650 genlmsg_cancel(msg, hdr);
5654 static int nl80211_netlink_notify(struct notifier_block * nb,
5655 unsigned long state,
5658 struct netlink_notify *notify = _notify;
5659 struct cfg80211_registered_device *rdev;
5660 struct wireless_dev *wdev;
5662 if (state != NETLINK_URELEASE)
5667 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
5668 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
5669 cfg80211_mlme_unregister_socket(wdev, notify->pid);
5676 static struct notifier_block nl80211_netlink_notifier = {
5677 .notifier_call = nl80211_netlink_notify,
5680 /* initialisation/exit functions */
5682 int nl80211_init(void)
5686 err = genl_register_family_with_ops(&nl80211_fam,
5687 nl80211_ops, ARRAY_SIZE(nl80211_ops));
5691 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
5695 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
5699 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
5703 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
5707 #ifdef CONFIG_NL80211_TESTMODE
5708 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
5713 err = netlink_register_notifier(&nl80211_netlink_notifier);
5719 genl_unregister_family(&nl80211_fam);
5723 void nl80211_exit(void)
5725 netlink_unregister_notifier(&nl80211_netlink_notifier);
5726 genl_unregister_family(&nl80211_fam);