2 * iwinfo - Wireless Information Library - NL80211 Backend
4 * Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
6 * The iwinfo library is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation.
10 * The iwinfo library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 * See the GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with the iwinfo library. If not, see http://www.gnu.org/licenses/.
18 * The signal handling code is derived from the official madwifi tools,
19 * wlanconfig.c in particular. The encryption property handling was
20 * inspired by the hostapd madwifi driver.
22 * Parts of this code are derived from the Linux iw utility.
25 #include "iwinfo/nl80211.h"
26 #include "iwinfo/wext.h"
28 #define min(x, y) ((x) < (y)) ? (x) : (y)
30 static struct nl80211_state *nls = NULL;
32 static int nl80211_init(void)
38 nls = malloc(sizeof(struct nl80211_state));
44 nls->nl_sock = nl_socket_alloc();
50 if (genl_connect(nls->nl_sock)) {
55 fd = nl_socket_get_fd(nls->nl_sock);
56 if (fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC) < 0) {
61 if (genl_ctrl_alloc_cache(nls->nl_sock, &nls->nl_cache)) {
66 nls->nl80211 = genl_ctrl_search_by_name(nls->nl_cache, "nl80211");
72 nls->nlctrl = genl_ctrl_search_by_name(nls->nl_cache, "nlctrl");
88 static int nl80211_msg_error(struct sockaddr_nl *nla,
89 struct nlmsgerr *err, void *arg)
96 static int nl80211_msg_finish(struct nl_msg *msg, void *arg)
103 static int nl80211_msg_ack(struct nl_msg *msg, void *arg)
110 static int nl80211_msg_response(struct nl_msg *msg, void *arg)
115 static void nl80211_free(struct nl80211_msg_conveyor *cv)
130 static struct nl80211_msg_conveyor * nl80211_new(struct genl_family *family,
133 static struct nl80211_msg_conveyor cv;
135 struct nl_msg *req = NULL;
136 struct nl_cb *cb = NULL;
142 cb = nl_cb_alloc(NL_CB_DEFAULT);
146 genlmsg_put(req, 0, 0, genl_family_get_id(family), 0, flags, cmd, 0);
164 static struct nl80211_msg_conveyor * nl80211_ctl(int cmd, int flags)
166 if (nl80211_init() < 0)
169 return nl80211_new(nls->nlctrl, cmd, flags);
172 static struct nl80211_msg_conveyor * nl80211_msg(const char *ifname,
175 int ifidx = -1, phyidx = -1;
176 struct nl80211_msg_conveyor *cv;
178 if (nl80211_init() < 0)
181 if (!strncmp(ifname, "phy", 3))
182 phyidx = atoi(&ifname[3]);
183 else if (!strncmp(ifname, "radio", 5))
184 phyidx = atoi(&ifname[5]);
185 else if (!strncmp(ifname, "mon.", 4))
186 ifidx = if_nametoindex(&ifname[4]);
188 ifidx = if_nametoindex(ifname);
190 if ((ifidx < 0) && (phyidx < 0))
193 cv = nl80211_new(nls->nl80211, cmd, flags);
198 NLA_PUT_U32(cv->msg, NL80211_ATTR_IFINDEX, ifidx);
201 NLA_PUT_U32(cv->msg, NL80211_ATTR_WIPHY, phyidx);
210 static struct nl80211_msg_conveyor * nl80211_send(
211 struct nl80211_msg_conveyor *cv,
212 int (*cb_func)(struct nl_msg *, void *), void *cb_arg
214 static struct nl80211_msg_conveyor rcv;
218 nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, cb_func, cb_arg);
220 nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, nl80211_msg_response, &rcv);
222 if (nl_send_auto_complete(nls->nl_sock, cv->msg) < 0)
225 nl_cb_err(cv->cb, NL_CB_CUSTOM, nl80211_msg_error, &err);
226 nl_cb_set(cv->cb, NL_CB_FINISH, NL_CB_CUSTOM, nl80211_msg_finish, &err);
227 nl_cb_set(cv->cb, NL_CB_ACK, NL_CB_CUSTOM, nl80211_msg_ack, &err);
230 nl_recvmsgs(nls->nl_sock, cv->cb);
241 static struct nlattr ** nl80211_parse(struct nl_msg *msg)
243 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
244 static struct nlattr *attr[NL80211_ATTR_MAX + 1];
246 nla_parse(attr, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
247 genlmsg_attrlen(gnlh, 0), NULL);
253 static int nl80211_subscribe_cb(struct nl_msg *msg, void *arg)
255 struct nl80211_group_conveyor *cv = arg;
257 struct nlattr **attr = nl80211_parse(msg);
258 struct nlattr *mgrpinfo[CTRL_ATTR_MCAST_GRP_MAX + 1];
262 if (!attr[CTRL_ATTR_MCAST_GROUPS])
265 nla_for_each_nested(mgrp, attr[CTRL_ATTR_MCAST_GROUPS], mgrpidx)
267 nla_parse(mgrpinfo, CTRL_ATTR_MCAST_GRP_MAX,
268 nla_data(mgrp), nla_len(mgrp), NULL);
270 if (mgrpinfo[CTRL_ATTR_MCAST_GRP_ID] &&
271 mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME] &&
272 !strncmp(nla_data(mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME]),
273 cv->name, nla_len(mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME])))
275 cv->id = nla_get_u32(mgrpinfo[CTRL_ATTR_MCAST_GRP_ID]);
283 static int nl80211_subscribe(const char *family, const char *group)
285 struct nl80211_group_conveyor cv = { .name = group, .id = -ENOENT };
286 struct nl80211_msg_conveyor *req;
288 req = nl80211_ctl(CTRL_CMD_GETFAMILY, 0);
291 NLA_PUT_STRING(req->msg, CTRL_ATTR_FAMILY_NAME, family);
292 nl80211_send(req, nl80211_subscribe_cb, &cv);
298 return nl_socket_add_membership(nls->nl_sock, cv.id);
302 static int nl80211_wait_cb(struct nl_msg *msg, void *arg)
304 struct nl80211_event_conveyor *cv = arg;
305 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
307 if (gnlh->cmd == cv->wait)
308 cv->recv = gnlh->cmd;
313 static int nl80211_wait_seq_check(struct nl_msg *msg, void *arg)
318 static int nl80211_wait(const char *family, const char *group, int cmd)
320 struct nl80211_event_conveyor cv = { .wait = cmd };
323 if (nl80211_subscribe(family, group))
326 cb = nl_cb_alloc(NL_CB_DEFAULT);
331 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, nl80211_wait_seq_check, NULL);
332 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, nl80211_wait_cb, &cv );
335 nl_recvmsgs(nls->nl_sock, cb);
343 static int nl80211_freq2channel(int freq)
349 return (freq - 2407) / 5;
351 return (freq / 5) - 1000;
354 static int nl80211_channel2freq(int channel, const char *band)
359 if ((channel < 14) && (!band || band[0] != 'a'))
360 return (channel * 5) + 2407;
363 return (1000 + channel) * 5;
368 static char * nl80211_getval(const char *ifname, const char *buf, const char *key)
371 char lkey[64] = { 0 };
372 const char *ln = buf;
373 static char lval[256] = { 0 };
375 int matched_if = ifname ? 0 : 1;
378 for( i = 0, len = strlen(buf); i < len; i++ )
380 if (!lkey[0] && (buf[i] == ' ' || buf[i] == '\t'))
384 else if (!lkey[0] && (buf[i] == '='))
386 if ((&buf[i] - ln) > 0)
387 memcpy(lkey, ln, min(sizeof(lkey) - 1, &buf[i] - ln));
389 else if (buf[i] == '\n')
393 memcpy(lval, ln + strlen(lkey) + 1,
394 min(sizeof(lval) - 1, &buf[i] - ln - strlen(lkey) - 1));
396 if ((ifname != NULL) &&
397 (!strcmp(lkey, "interface") || !strcmp(lkey, "bss")) )
399 matched_if = !strcmp(lval, ifname);
401 else if (matched_if && !strcmp(lkey, key))
408 memset(lkey, 0, sizeof(lkey));
409 memset(lval, 0, sizeof(lval));
416 static int nl80211_ifname2phy_cb(struct nl_msg *msg, void *arg)
419 struct nlattr **attr = nl80211_parse(msg);
421 if (attr[NL80211_ATTR_WIPHY_NAME])
422 memcpy(buf, nla_data(attr[NL80211_ATTR_WIPHY_NAME]),
423 nla_len(attr[NL80211_ATTR_WIPHY_NAME]));
430 static char * nl80211_ifname2phy(const char *ifname)
432 static char phy[32] = { 0 };
433 struct nl80211_msg_conveyor *req;
435 memset(phy, 0, sizeof(phy));
437 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
440 nl80211_send(req, nl80211_ifname2phy_cb, phy);
444 return phy[0] ? phy : NULL;
447 static char * nl80211_hostapd_info(const char *ifname)
450 char path[32] = { 0 };
451 static char buf[4096] = { 0 };
454 if ((phy = nl80211_ifname2phy(ifname)) != NULL)
456 snprintf(path, sizeof(path), "/var/run/hostapd-%s.conf", phy);
458 if ((conf = fopen(path, "r")) != NULL)
460 fread(buf, sizeof(buf) - 1, 1, conf);
470 static inline int nl80211_wpactl_recv(int sock, char *buf, int blen)
473 struct timeval tv = { 2, 0 };
478 memset(buf, 0, blen);
481 if (select(sock + 1, &rfds, NULL, NULL, &tv) < 0)
484 if (!FD_ISSET(sock, &rfds))
487 return recv(sock, buf, blen, 0);
490 static char * nl80211_wpactl_info(const char *ifname, const char *cmd,
496 size_t remote_length, local_length;
497 static char buffer[10240] = { 0 };
499 struct sockaddr_un local = { 0 };
500 struct sockaddr_un remote = { 0 };
503 sock = socket(PF_UNIX, SOCK_DGRAM, 0);
507 remote.sun_family = AF_UNIX;
508 remote_length = sizeof(remote.sun_family) + sprintf(remote.sun_path,
509 "/var/run/wpa_supplicant-%s/%s", ifname, ifname);
511 if (fcntl(sock, F_SETFD, fcntl(sock, F_GETFD) | FD_CLOEXEC) < 0)
514 if (connect(sock, (struct sockaddr *) &remote, remote_length))
517 local.sun_family = AF_UNIX;
518 local_length = sizeof(local.sun_family) +
519 sprintf(local.sun_path, "/var/run/iwinfo-%s-%d", ifname, getpid());
521 if (bind(sock, (struct sockaddr *) &local, local_length))
527 send(sock, "ATTACH", 6, 0);
529 if (nl80211_wpactl_recv(sock, buffer, sizeof(buffer)) <= 0)
534 send(sock, cmd, strlen(cmd), 0);
536 while( numtry++ < 5 )
538 if (nl80211_wpactl_recv(sock, buffer, sizeof(buffer)) <= 0)
546 if ((!event && buffer[0] != '<') || (event && strstr(buffer, event)))
555 if (local.sun_family)
556 unlink(local.sun_path);
561 static inline int nl80211_readint(const char *path)
567 if ((fd = open(path, O_RDONLY)) > -1)
569 if (read(fd, buffer, sizeof(buffer)) > 0)
578 static char * nl80211_phy2ifname(const char *ifname)
580 int fd, ifidx = -1, cifidx = -1, phyidx = -1;
582 static char nif[IFNAMSIZ] = { 0 };
589 else if (!strncmp(ifname, "phy", 3))
590 phyidx = atoi(&ifname[3]);
591 else if (!strncmp(ifname, "radio", 5))
592 phyidx = atoi(&ifname[5]);
594 memset(nif, 0, sizeof(nif));
598 if ((d = opendir("/sys/class/net")) != NULL)
600 while ((e = readdir(d)) != NULL)
602 snprintf(buffer, sizeof(buffer),
603 "/sys/class/net/%s/phy80211/index", e->d_name);
605 if (nl80211_readint(buffer) == phyidx)
607 snprintf(buffer, sizeof(buffer),
608 "/sys/class/net/%s/ifindex", e->d_name);
610 if ((cifidx = nl80211_readint(buffer)) >= 0 &&
611 ((ifidx < 0) || (cifidx < ifidx)))
614 strncpy(nif, e->d_name, sizeof(nif));
623 return nif[0] ? nif : NULL;
626 static char * nl80211_ifadd(const char *ifname)
630 static char nif[IFNAMSIZ] = { 0 };
631 struct nl80211_msg_conveyor *req, *res;
633 req = nl80211_msg(ifname, NL80211_CMD_NEW_INTERFACE, 0);
636 snprintf(nif, sizeof(nif), "tmp.%s", ifname);
638 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, nif);
639 NLA_PUT_U32(req->msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_STATION);
641 nl80211_send(req, NULL, NULL);
652 static void nl80211_ifdel(const char *ifname)
654 struct nl80211_msg_conveyor *req;
656 req = nl80211_msg(ifname, NL80211_CMD_DEL_INTERFACE, 0);
659 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, ifname);
661 nl80211_send(req, NULL, NULL);
668 static void nl80211_hostapd_hup(const char *ifname)
672 char *phy = nl80211_ifname2phy(ifname);
676 snprintf(buf, sizeof(buf), "/var/run/wifi-%s.pid", phy);
677 if ((fd = open(buf, O_RDONLY)) > 0)
679 if (read(fd, buf, sizeof(buf)) > 0)
691 int nl80211_probe(const char *ifname)
693 return !!nl80211_ifname2phy(ifname);
696 void nl80211_close(void)
701 genl_family_put(nls->nlctrl);
704 genl_family_put(nls->nl80211);
707 nl_socket_free(nls->nl_sock);
710 nl_cache_free(nls->nl_cache);
717 int nl80211_get_mode(const char *ifname, int *buf)
719 return wext_get_mode(ifname, buf);
722 int nl80211_get_ssid(const char *ifname, char *buf)
726 if (!wext_get_ssid(ifname, buf))
730 else if ((ssid = nl80211_hostapd_info(ifname)) &&
731 (ssid = nl80211_getval(ifname, ssid, "ssid")))
733 memcpy(buf, ssid, strlen(ssid));
740 int nl80211_get_bssid(const char *ifname, char *buf)
743 unsigned char mac[6];
745 if (!wext_get_bssid(ifname, buf))
749 else if ((bssid = nl80211_hostapd_info(ifname)) &&
750 (bssid = nl80211_getval(ifname, bssid, "bssid")))
752 mac[0] = strtol(&bssid[0], NULL, 16);
753 mac[1] = strtol(&bssid[3], NULL, 16);
754 mac[2] = strtol(&bssid[6], NULL, 16);
755 mac[3] = strtol(&bssid[9], NULL, 16);
756 mac[4] = strtol(&bssid[12], NULL, 16);
757 mac[5] = strtol(&bssid[15], NULL, 16);
759 sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
760 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
769 static int nl80211_get_frequency_cb(struct nl_msg *msg, void *arg)
772 struct nlattr **attr = nl80211_parse(msg);
773 struct nlattr *binfo[NL80211_BSS_MAX + 1];
775 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
776 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
779 if (attr[NL80211_ATTR_BSS] &&
780 !nla_parse_nested(binfo, NL80211_BSS_MAX,
781 attr[NL80211_ATTR_BSS], bss_policy))
783 if (binfo[NL80211_BSS_FREQUENCY])
784 *freq = nla_get_u32(binfo[NL80211_BSS_FREQUENCY]);
790 int nl80211_get_frequency(const char *ifname, int *buf)
793 struct nl80211_msg_conveyor *req;
797 if ((res = nl80211_hostapd_info(ifname)) &&
798 (channel = nl80211_getval(NULL, res, "channel")))
800 *buf = nl80211_channel2freq(atoi(channel),
801 nl80211_getval(NULL, res, "hw_mode"));
805 res = nl80211_phy2ifname(ifname);
806 req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
810 nl80211_send(req, nl80211_get_frequency_cb, buf);
815 return (*buf == 0) ? -1 : 0;
818 int nl80211_get_channel(const char *ifname, int *buf)
820 if (!nl80211_get_frequency(ifname, buf))
822 *buf = nl80211_freq2channel(*buf);
830 int nl80211_get_txpower(const char *ifname, int *buf)
832 return wext_get_txpower(ifname, buf);
836 static int nl80211_fill_signal_cb(struct nl_msg *msg, void *arg)
840 struct nl80211_rssi_rate *rr = arg;
841 struct nlattr **attr = nl80211_parse(msg);
842 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
843 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
845 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
846 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
847 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
848 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
849 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
850 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
851 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
852 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
853 [NL80211_STA_INFO_LLID] = { .type = NLA_U16 },
854 [NL80211_STA_INFO_PLID] = { .type = NLA_U16 },
855 [NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 },
858 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
859 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
860 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
861 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
862 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
865 if (attr[NL80211_ATTR_STA_INFO])
867 if (!nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
868 attr[NL80211_ATTR_STA_INFO], stats_policy))
870 if (sinfo[NL80211_STA_INFO_SIGNAL])
872 dbm = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
873 rr->rssi = rr->rssi ? (int8_t)((rr->rssi + dbm) / 2) : dbm;
876 if (sinfo[NL80211_STA_INFO_TX_BITRATE])
878 if (!nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
879 sinfo[NL80211_STA_INFO_TX_BITRATE],
882 if (rinfo[NL80211_RATE_INFO_BITRATE])
884 mbit = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]);
886 ? (int16_t)((rr->rate + mbit) / 2) : mbit;
896 static void nl80211_fill_signal(const char *ifname, struct nl80211_rssi_rate *r)
900 struct nl80211_msg_conveyor *req;
905 if ((d = opendir("/sys/class/net")) != NULL)
907 while ((de = readdir(d)) != NULL)
909 if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
910 (!de->d_name[strlen(ifname)] ||
911 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
913 req = nl80211_msg(de->d_name, NL80211_CMD_GET_STATION,
918 nl80211_send(req, nl80211_fill_signal_cb, r);
928 int nl80211_get_bitrate(const char *ifname, int *buf)
930 struct nl80211_rssi_rate rr;
932 if (!wext_get_bitrate(ifname, buf))
935 nl80211_fill_signal(ifname, &rr);
939 *buf = (rr.rate * 100);
946 int nl80211_get_signal(const char *ifname, int *buf)
948 struct nl80211_rssi_rate rr;
950 if (!wext_get_signal(ifname, buf))
953 nl80211_fill_signal(ifname, &rr);
964 static int nl80211_get_noise_cb(struct nl_msg *msg, void *arg)
967 struct nlattr **tb = nl80211_parse(msg);
968 struct nlattr *si[NL80211_SURVEY_INFO_MAX + 1];
970 static struct nla_policy sp[NL80211_SURVEY_INFO_MAX + 1] = {
971 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
972 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
975 if (!tb[NL80211_ATTR_SURVEY_INFO])
978 if (nla_parse_nested(si, NL80211_SURVEY_INFO_MAX,
979 tb[NL80211_ATTR_SURVEY_INFO], sp))
982 if (!si[NL80211_SURVEY_INFO_NOISE])
985 if (!*noise || si[NL80211_SURVEY_INFO_IN_USE])
986 *noise = (int8_t)nla_get_u8(si[NL80211_SURVEY_INFO_NOISE]);
992 int nl80211_get_noise(const char *ifname, int *buf)
995 struct nl80211_msg_conveyor *req;
997 req = nl80211_msg(ifname, NL80211_CMD_GET_SURVEY, NLM_F_DUMP);
1002 nl80211_send(req, nl80211_get_noise_cb, &noise);
1015 int nl80211_get_quality(const char *ifname, int *buf)
1019 if (wext_get_quality(ifname, buf))
1023 if (!nl80211_get_signal(ifname, &signal))
1025 /* A positive signal level is usually just a quality
1026 * value, pass through as-is */
1032 /* The cfg80211 wext compat layer assumes a signal range
1033 * of -110 dBm to -40 dBm, the quality value is derived
1034 * by adding 110 to the signal level */
1039 else if (signal > -40)
1042 *buf = (signal + 110);
1050 int nl80211_get_quality_max(const char *ifname, int *buf)
1052 if (wext_get_quality_max(ifname, buf))
1053 /* The cfg80211 wext compat layer assumes a maximum
1060 int nl80211_get_encryption(const char *ifname, char *buf)
1065 struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf;
1067 /* WPA supplicant */
1068 if ((res = nl80211_wpactl_info(ifname, "STATUS", NULL)) &&
1069 (val = nl80211_getval(NULL, res, "pairwise_cipher")))
1072 if (strstr(val, "WEP"))
1074 if (strstr(val, "WEP-40"))
1075 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1077 else if (strstr(val, "WEP-104"))
1078 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1081 c->group_ciphers = c->pair_ciphers;
1083 c->auth_suites |= IWINFO_KMGMT_NONE;
1084 c->auth_algs |= IWINFO_AUTH_OPEN; /* XXX: assumption */
1090 if (strstr(val, "TKIP"))
1091 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1093 else if (strstr(val, "CCMP"))
1094 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1096 else if (strstr(val, "NONE"))
1097 c->pair_ciphers |= IWINFO_CIPHER_NONE;
1099 else if (strstr(val, "WEP-40"))
1100 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1102 else if (strstr(val, "WEP-104"))
1103 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1106 if ((val = nl80211_getval(NULL, res, "group_cipher")))
1108 if (strstr(val, "TKIP"))
1109 c->group_ciphers |= IWINFO_CIPHER_TKIP;
1111 else if (strstr(val, "CCMP"))
1112 c->group_ciphers |= IWINFO_CIPHER_CCMP;
1114 else if (strstr(val, "NONE"))
1115 c->group_ciphers |= IWINFO_CIPHER_NONE;
1117 else if (strstr(val, "WEP-40"))
1118 c->group_ciphers |= IWINFO_CIPHER_WEP40;
1120 else if (strstr(val, "WEP-104"))
1121 c->group_ciphers |= IWINFO_CIPHER_WEP104;
1125 if ((val = nl80211_getval(NULL, res, "key_mgmt")))
1127 if (strstr(val, "WPA2"))
1130 else if (strstr(val, "WPA"))
1134 if (strstr(val, "PSK"))
1135 c->auth_suites |= IWINFO_KMGMT_PSK;
1137 else if (strstr(val, "EAP") || strstr(val, "802.1X"))
1138 c->auth_suites |= IWINFO_KMGMT_8021x;
1140 else if (strstr(val, "NONE"))
1141 c->auth_suites |= IWINFO_KMGMT_NONE;
1144 c->enabled = (c->wpa_version && c->auth_suites) ? 1 : 0;
1151 else if ((res = nl80211_hostapd_info(ifname)))
1153 if ((val = nl80211_getval(ifname, res, "wpa")) != NULL)
1154 c->wpa_version = atoi(val);
1156 val = nl80211_getval(ifname, res, "wpa_key_mgmt");
1158 if (!val || strstr(val, "PSK"))
1159 c->auth_suites |= IWINFO_KMGMT_PSK;
1161 if (val && strstr(val, "EAP"))
1162 c->auth_suites |= IWINFO_KMGMT_8021x;
1164 if (val && strstr(val, "NONE"))
1165 c->auth_suites |= IWINFO_KMGMT_NONE;
1167 if ((val = nl80211_getval(ifname, res, "wpa_pairwise")) != NULL)
1169 if (strstr(val, "TKIP"))
1170 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1172 if (strstr(val, "CCMP"))
1173 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1175 if (strstr(val, "NONE"))
1176 c->pair_ciphers |= IWINFO_CIPHER_NONE;
1179 if ((val = nl80211_getval(ifname, res, "auth_algs")) != NULL)
1183 c->auth_algs |= IWINFO_AUTH_OPEN;
1187 c->auth_algs |= IWINFO_AUTH_SHARED;
1191 c->auth_algs |= IWINFO_AUTH_OPEN;
1192 c->auth_algs |= IWINFO_AUTH_SHARED;
1199 for (i = 0; i < 4; i++)
1201 snprintf(k, sizeof(k), "wep_key%d", i);
1203 if ((val = nl80211_getval(ifname, res, k)))
1205 if ((strlen(val) == 5) || (strlen(val) == 10))
1206 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1208 else if ((strlen(val) == 13) || (strlen(val) == 26))
1209 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1214 c->group_ciphers = c->pair_ciphers;
1215 c->enabled = (c->wpa_version || c->pair_ciphers) ? 1 : 0;
1224 static int nl80211_get_assoclist_cb(struct nl_msg *msg, void *arg)
1226 struct nl80211_array_buf *arr = arg;
1227 struct iwinfo_assoclist_entry *e = arr->buf;
1228 struct nlattr **attr = nl80211_parse(msg);
1229 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1230 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1232 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
1233 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
1234 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
1235 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
1236 [NL80211_STA_INFO_RX_BITRATE] = { .type = NLA_NESTED },
1237 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
1238 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1241 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1242 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1243 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1244 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1245 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1248 /* advance to end of array */
1250 memset(e, 0, sizeof(*e));
1252 if (attr[NL80211_ATTR_MAC])
1253 memcpy(e->mac, nla_data(attr[NL80211_ATTR_MAC]), 6);
1255 if (attr[NL80211_ATTR_STA_INFO] &&
1256 !nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1257 attr[NL80211_ATTR_STA_INFO], stats_policy))
1259 if (sinfo[NL80211_STA_INFO_SIGNAL])
1260 e->signal = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1262 if (sinfo[NL80211_STA_INFO_INACTIVE_TIME])
1263 e->inactive = nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]);
1265 if (sinfo[NL80211_STA_INFO_RX_PACKETS])
1266 e->rx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS]);
1268 if (sinfo[NL80211_STA_INFO_TX_PACKETS])
1269 e->tx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS]);
1271 if (sinfo[NL80211_STA_INFO_RX_BITRATE] &&
1272 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1273 sinfo[NL80211_STA_INFO_RX_BITRATE], rate_policy))
1275 if (rinfo[NL80211_RATE_INFO_BITRATE])
1277 nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]) * 100;
1279 if (rinfo[NL80211_RATE_INFO_MCS])
1280 e->rx_rate.mcs = nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]);
1282 if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
1283 e->rx_rate.is_40mhz = 1;
1285 if (rinfo[NL80211_RATE_INFO_SHORT_GI])
1286 e->rx_rate.is_short_gi = 1;
1289 if (sinfo[NL80211_STA_INFO_TX_BITRATE] &&
1290 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1291 sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy))
1293 if (rinfo[NL80211_RATE_INFO_BITRATE])
1295 nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]) * 100;
1297 if (rinfo[NL80211_RATE_INFO_MCS])
1298 e->tx_rate.mcs = nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]);
1300 if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
1301 e->tx_rate.is_40mhz = 1;
1303 if (rinfo[NL80211_RATE_INFO_SHORT_GI])
1304 e->tx_rate.is_short_gi = 1;
1308 e->noise = 0; /* filled in by caller */
1314 int nl80211_get_assoclist(const char *ifname, char *buf, int *len)
1319 struct nl80211_msg_conveyor *req;
1320 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
1321 struct iwinfo_assoclist_entry *e;
1323 if ((d = opendir("/sys/class/net")) != NULL)
1325 while ((de = readdir(d)) != NULL)
1327 if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
1328 (!de->d_name[strlen(ifname)] ||
1329 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
1331 req = nl80211_msg(de->d_name, NL80211_CMD_GET_STATION,
1336 nl80211_send(req, nl80211_get_assoclist_cb, &arr);
1344 if (!nl80211_get_noise(ifname, &noise))
1345 for (i = 0, e = arr.buf; i < arr.count; i++, e++)
1348 *len = (arr.count * sizeof(struct iwinfo_assoclist_entry));
1355 static int nl80211_get_txpwrlist_cb(struct nl_msg *msg, void *arg)
1358 int ch_cur, ch_cmp, bands_remain, freqs_remain;
1360 struct nlattr **attr = nl80211_parse(msg);
1361 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
1362 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
1363 struct nlattr *band, *freq;
1365 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1366 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1367 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1368 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1369 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1370 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1371 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1374 ch_cur = *dbm_max; /* value int* is initialized with channel by caller */
1377 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
1379 nla_parse(bands, NL80211_BAND_ATTR_MAX, nla_data(band),
1380 nla_len(band), NULL);
1382 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
1384 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
1385 nla_data(freq), nla_len(freq), freq_policy);
1387 ch_cmp = nl80211_freq2channel(nla_get_u32(
1388 freqs[NL80211_FREQUENCY_ATTR_FREQ]));
1390 if ((!ch_cur || (ch_cmp == ch_cur)) &&
1391 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER])
1393 *dbm_max = (int)(0.01 * nla_get_u32(
1394 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]));
1404 int nl80211_get_txpwrlist(const char *ifname, char *buf, int *len)
1407 int dbm_max = -1, dbm_cur, dbm_cnt;
1408 struct nl80211_msg_conveyor *req;
1409 struct iwinfo_txpwrlist_entry entry;
1411 if (nl80211_get_channel(ifname, &ch_cur))
1414 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
1417 /* initialize the value pointer with channel for callback */
1420 nl80211_send(req, nl80211_get_txpwrlist_cb, &dbm_max);
1426 for (dbm_cur = 0, dbm_cnt = 0;
1428 dbm_cur++, dbm_cnt++)
1430 entry.dbm = dbm_cur;
1431 entry.mw = iwinfo_dbm2mw(dbm_cur);
1433 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
1436 entry.dbm = dbm_max;
1437 entry.mw = iwinfo_dbm2mw(dbm_max);
1439 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
1442 *len = dbm_cnt * sizeof(entry);
1449 static void nl80211_get_scancrypto(const char *spec,
1450 struct iwinfo_crypto_entry *c)
1452 if (strstr(spec, "WPA") || strstr(spec, "WEP"))
1456 if (strstr(spec, "WPA2-") && strstr(spec, "WPA-"))
1459 else if (strstr(spec, "WPA2"))
1462 else if (strstr(spec, "WPA"))
1465 else if (strstr(spec, "WEP"))
1466 c->auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
1469 if (strstr(spec, "PSK"))
1470 c->auth_suites |= IWINFO_KMGMT_PSK;
1472 if (strstr(spec, "802.1X") || strstr(spec, "EAP"))
1473 c->auth_suites |= IWINFO_KMGMT_8021x;
1475 if (strstr(spec, "WPA-NONE"))
1476 c->auth_suites |= IWINFO_KMGMT_NONE;
1479 if (strstr(spec, "TKIP"))
1480 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1482 if (strstr(spec, "CCMP"))
1483 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1485 if (strstr(spec, "WEP-40"))
1486 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1488 if (strstr(spec, "WEP-104"))
1489 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1491 c->group_ciphers = c->pair_ciphers;
1500 struct nl80211_scanlist {
1501 struct iwinfo_scanlist_entry *e;
1506 static void nl80211_get_scanlist_ie(struct nlattr **bss,
1507 struct iwinfo_scanlist_entry *e)
1509 int ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1510 unsigned char *ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1511 static unsigned char ms_oui[3] = { 0x00, 0x50, 0xf2 };
1513 while (ielen >= 2 && ielen >= ie[1])
1518 memcpy(e->ssid, ie + 2, min(ie[1], IWINFO_ESSID_MAX_SIZE));
1522 iwinfo_parse_rsn(&e->crypto, ie + 2, ie[1],
1523 IWINFO_CIPHER_CCMP, IWINFO_KMGMT_8021x);
1526 case 221: /* Vendor */
1527 if (ie[1] >= 4 && !memcmp(ie + 2, ms_oui, 3) && ie[5] == 1)
1528 iwinfo_parse_rsn(&e->crypto, ie + 6, ie[1] - 4,
1529 IWINFO_CIPHER_TKIP, IWINFO_KMGMT_PSK);
1538 static int nl80211_get_scanlist_cb(struct nl_msg *msg, void *arg)
1543 struct nl80211_scanlist *sl = arg;
1544 struct nlattr **tb = nl80211_parse(msg);
1545 struct nlattr *bss[NL80211_BSS_MAX + 1];
1547 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1548 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1549 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1550 [NL80211_BSS_BSSID] = { },
1551 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1552 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1553 [NL80211_BSS_INFORMATION_ELEMENTS] = { },
1554 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1555 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1556 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1557 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1558 [NL80211_BSS_BEACON_IES] = { },
1561 if (!tb[NL80211_ATTR_BSS] ||
1562 nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1564 !bss[NL80211_BSS_BSSID])
1569 if (bss[NL80211_BSS_CAPABILITY])
1570 caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1574 memset(sl->e, 0, sizeof(*sl->e));
1575 memcpy(sl->e->mac, nla_data(bss[NL80211_BSS_BSSID]), 6);
1578 sl->e->mode = IWINFO_OPMODE_ADHOC;
1580 sl->e->mode = IWINFO_OPMODE_MASTER;
1583 sl->e->crypto.enabled = 1;
1585 if (bss[NL80211_BSS_FREQUENCY])
1586 sl->e->channel = nl80211_freq2channel(nla_get_u32(
1587 bss[NL80211_BSS_FREQUENCY]));
1589 if (bss[NL80211_BSS_INFORMATION_ELEMENTS])
1590 nl80211_get_scanlist_ie(bss, sl->e);
1592 if (bss[NL80211_BSS_SIGNAL_MBM])
1595 (uint8_t)((int32_t)nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]) / 100);
1597 rssi = sl->e->signal - 0x100;
1601 else if (rssi > -40)
1604 sl->e->quality = (rssi + 110);
1605 sl->e->quality_max = 70;
1608 if (sl->e->crypto.enabled && !sl->e->crypto.wpa_version)
1610 sl->e->crypto.auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
1611 sl->e->crypto.pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
1620 static int nl80211_get_scanlist_nl(const char *ifname, char *buf, int *len)
1622 struct nl80211_msg_conveyor *req;
1623 struct nl80211_scanlist sl = { .e = (struct iwinfo_scanlist_entry *)buf };
1625 req = nl80211_msg(ifname, NL80211_CMD_TRIGGER_SCAN, 0);
1628 nl80211_send(req, NULL, NULL);
1632 nl80211_wait("nl80211", "scan", NL80211_CMD_NEW_SCAN_RESULTS);
1634 req = nl80211_msg(ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
1637 nl80211_send(req, nl80211_get_scanlist_cb, &sl);
1641 *len = sl.len * sizeof(struct iwinfo_scanlist_entry);
1642 return *len ? 0 : -1;
1645 int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
1647 int freq, rssi, qmax, count;
1649 char ssid[128] = { 0 };
1650 char bssid[18] = { 0 };
1651 char cipher[256] = { 0 };
1653 /* Got a radioX pseudo interface, find some interface on it or create one */
1654 if (!strncmp(ifname, "radio", 5))
1656 /* Reuse existing interface */
1657 if ((res = nl80211_phy2ifname(ifname)) != NULL)
1659 return nl80211_get_scanlist(res, buf, len);
1662 /* Need to spawn a temporary iface for scanning */
1663 else if ((res = nl80211_ifadd(ifname)) != NULL)
1665 count = nl80211_get_scanlist(res, buf, len);
1671 struct iwinfo_scanlist_entry *e = (struct iwinfo_scanlist_entry *)buf;
1673 /* WPA supplicant */
1674 if ((res = nl80211_wpactl_info(ifname, "SCAN", "CTRL-EVENT-SCAN-RESULTS")))
1676 if ((res = nl80211_wpactl_info(ifname, "SCAN_RESULTS", NULL)))
1678 nl80211_get_quality_max(ifname, &qmax);
1680 /* skip header line */
1681 while (*res++ != '\n');
1685 while (sscanf(res, "%17s %d %d %255s%*[ \t]%127[^\n]\n",
1686 bssid, &freq, &rssi, cipher, ssid) > 0)
1689 e->mac[0] = strtol(&bssid[0], NULL, 16);
1690 e->mac[1] = strtol(&bssid[3], NULL, 16);
1691 e->mac[2] = strtol(&bssid[6], NULL, 16);
1692 e->mac[3] = strtol(&bssid[9], NULL, 16);
1693 e->mac[4] = strtol(&bssid[12], NULL, 16);
1694 e->mac[5] = strtol(&bssid[15], NULL, 16);
1697 memcpy(e->ssid, ssid, min(strlen(ssid), sizeof(e->ssid) - 1));
1699 /* Mode (assume master) */
1700 e->mode = IWINFO_OPMODE_MASTER;
1703 e->channel = nl80211_freq2channel(freq);
1711 /* The cfg80211 wext compat layer assumes a signal range
1712 * of -110 dBm to -40 dBm, the quality value is derived
1713 * by adding 110 to the signal level */
1716 else if (rssi > -40)
1719 e->quality = (rssi + 110);
1727 e->quality_max = qmax;
1730 nl80211_get_scancrypto(cipher, &e->crypto);
1732 /* advance to next line */
1733 while (*res && *res++ != '\n');
1738 memset(ssid, 0, sizeof(ssid));
1739 memset(bssid, 0, sizeof(bssid));
1740 memset(cipher, 0, sizeof(cipher));
1743 *len = count * sizeof(struct iwinfo_scanlist_entry);
1751 /* Got a temp interface, don't create yet another one */
1752 if (!strncmp(ifname, "tmp.", 4))
1754 if (!iwinfo_ifup(ifname))
1757 nl80211_get_scanlist_nl(ifname, buf, len);
1758 iwinfo_ifdown(ifname);
1762 /* Spawn a new scan interface */
1765 if (!(res = nl80211_ifadd(ifname)))
1768 if (!iwinfo_ifmac(res))
1771 /* if we can take the new interface up, the driver supports an
1772 * additional interface and there's no need to tear down the ap */
1773 if (iwinfo_ifup(res))
1775 nl80211_get_scanlist_nl(res, buf, len);
1779 /* driver cannot create secondary interface, take down ap
1781 else if (iwinfo_ifdown(ifname) && iwinfo_ifup(res))
1783 nl80211_get_scanlist_nl(res, buf, len);
1785 iwinfo_ifup(ifname);
1786 nl80211_hostapd_hup(ifname);
1798 static int nl80211_get_freqlist_cb(struct nl_msg *msg, void *arg)
1800 int bands_remain, freqs_remain;
1802 struct nl80211_array_buf *arr = arg;
1803 struct iwinfo_freqlist_entry *e = arr->buf;
1805 struct nlattr **attr = nl80211_parse(msg);
1806 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
1807 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
1808 struct nlattr *band, *freq;
1810 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1811 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1812 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1813 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1814 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1815 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1816 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1819 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
1821 nla_parse(bands, NL80211_BAND_ATTR_MAX,
1822 nla_data(band), nla_len(band), NULL);
1824 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
1826 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
1827 nla_data(freq), nla_len(freq), NULL);
1829 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ] ||
1830 freqs[NL80211_FREQUENCY_ATTR_DISABLED])
1833 e->mhz = nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]);
1834 e->channel = nl80211_freq2channel(e->mhz);
1837 freqs[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] ||
1838 freqs[NL80211_FREQUENCY_ATTR_NO_IBSS] ||
1839 freqs[NL80211_FREQUENCY_ATTR_RADAR]
1850 int nl80211_get_freqlist(const char *ifname, char *buf, int *len)
1852 struct nl80211_msg_conveyor *req;
1853 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
1855 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
1858 nl80211_send(req, nl80211_get_freqlist_cb, &arr);
1864 *len = arr.count * sizeof(struct iwinfo_freqlist_entry);
1871 static int nl80211_get_country_cb(struct nl_msg *msg, void *arg)
1874 struct nlattr **attr = nl80211_parse(msg);
1876 if (attr[NL80211_ATTR_REG_ALPHA2])
1877 memcpy(buf, nla_data(attr[NL80211_ATTR_REG_ALPHA2]), 2);
1884 int nl80211_get_country(const char *ifname, char *buf)
1887 struct nl80211_msg_conveyor *req;
1889 req = nl80211_msg(ifname, NL80211_CMD_GET_REG, 0);
1892 nl80211_send(req, nl80211_get_country_cb, buf);
1902 int nl80211_get_countrylist(const char *ifname, char *buf, int *len)
1905 struct iwinfo_country_entry *e = (struct iwinfo_country_entry *)buf;
1906 const struct iwinfo_iso3166_label *l;
1908 for (l = IWINFO_ISO3166_NAMES, count = 0; l->iso3166; l++, e++, count++)
1910 e->iso3166 = l->iso3166;
1911 e->ccode[0] = (l->iso3166 / 256);
1912 e->ccode[1] = (l->iso3166 % 256);
1915 *len = (count * sizeof(struct iwinfo_country_entry));
1919 static int nl80211_get_hwmodelist_cb(struct nl_msg *msg, void *arg)
1922 int bands_remain, freqs_remain;
1924 struct nlattr **attr = nl80211_parse(msg);
1925 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
1926 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
1927 struct nlattr *band, *freq;
1931 if (attr[NL80211_ATTR_WIPHY_BANDS])
1933 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
1935 nla_parse(bands, NL80211_BAND_ATTR_MAX,
1936 nla_data(band), nla_len(band), NULL);
1938 if (bands[NL80211_BAND_ATTR_HT_CAPA])
1939 caps = nla_get_u16(bands[NL80211_BAND_ATTR_HT_CAPA]);
1941 /* Treat any nonzero capability as 11n */
1943 *modes |= IWINFO_80211_N;
1945 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS],
1948 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
1949 nla_data(freq), nla_len(freq), NULL);
1951 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ])
1954 if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) < 2485)
1956 *modes |= IWINFO_80211_B;
1957 *modes |= IWINFO_80211_G;
1961 *modes |= IWINFO_80211_A;
1970 int nl80211_get_hwmodelist(const char *ifname, int *buf)
1972 struct nl80211_msg_conveyor *req;
1974 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
1977 nl80211_send(req, nl80211_get_hwmodelist_cb, buf);
1981 return *buf ? 0 : -1;
1984 int nl80211_get_mbssid_support(const char *ifname, int *buf)
1986 /* Test whether we can create another interface */
1987 char *nif = nl80211_ifadd(ifname);
1991 *buf = (iwinfo_ifmac(nif) && iwinfo_ifup(nif));
2002 int nl80211_get_hardware_id(const char *ifname, char *buf)
2007 /* Got a radioX pseudo interface, find some interface on it or create one */
2008 if (!strncmp(ifname, "radio", 5))
2010 /* Reuse existing interface */
2011 if ((res = nl80211_phy2ifname(ifname)) != NULL)
2013 rv = wext_get_hardware_id(res, buf);
2016 /* Need to spawn a temporary iface for finding IDs */
2017 else if ((res = nl80211_ifadd(ifname)) != NULL)
2019 rv = wext_get_hardware_id(res, buf);
2025 rv = wext_get_hardware_id(ifname, buf);
2028 /* Failed to obtain hardware IDs, search board config */
2031 rv = iwinfo_hardware_id_from_mtd((struct iwinfo_hardware_id *)buf);
2037 static const struct iwinfo_hardware_entry *
2038 nl80211_get_hardware_entry(const char *ifname)
2040 struct iwinfo_hardware_id id;
2042 if (nl80211_get_hardware_id(ifname, (char *)&id))
2045 return iwinfo_hardware(&id);
2048 int nl80211_get_hardware_name(const char *ifname, char *buf)
2050 const struct iwinfo_hardware_entry *hw;
2052 if (!(hw = nl80211_get_hardware_entry(ifname)))
2053 sprintf(buf, "Generic MAC80211");
2055 sprintf(buf, "%s %s", hw->vendor_name, hw->device_name);
2060 int nl80211_get_txpower_offset(const char *ifname, int *buf)
2062 const struct iwinfo_hardware_entry *hw;
2064 if (!(hw = nl80211_get_hardware_entry(ifname)))
2067 *buf = hw->txpower_offset;
2071 int nl80211_get_frequency_offset(const char *ifname, int *buf)
2073 const struct iwinfo_hardware_entry *hw;
2075 if (!(hw = nl80211_get_hardware_entry(ifname)))
2078 *buf = hw->frequency_offset;