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 char * nl80211_getval(const char *ifname, const char *buf, const char *key)
357 char lkey[64] = { 0 };
358 const char *ln = buf;
359 static char lval[256] = { 0 };
361 int matched_if = ifname ? 0 : 1;
364 for( i = 0, len = strlen(buf); i < len; i++ )
366 if (!lkey[0] && (buf[i] == ' ' || buf[i] == '\t'))
370 else if (!lkey[0] && (buf[i] == '='))
372 if ((&buf[i] - ln) > 0)
373 memcpy(lkey, ln, min(sizeof(lkey) - 1, &buf[i] - ln));
375 else if (buf[i] == '\n')
379 memcpy(lval, ln + strlen(lkey) + 1,
380 min(sizeof(lval) - 1, &buf[i] - ln - strlen(lkey) - 1));
382 if ((ifname != NULL) &&
383 (!strcmp(lkey, "interface") || !strcmp(lkey, "bss")) )
385 matched_if = !strcmp(lval, ifname);
387 else if (matched_if && !strcmp(lkey, key))
394 memset(lkey, 0, sizeof(lkey));
395 memset(lval, 0, sizeof(lval));
402 static int nl80211_ifname2phy_cb(struct nl_msg *msg, void *arg)
405 struct nlattr **attr = nl80211_parse(msg);
407 if (attr[NL80211_ATTR_WIPHY_NAME])
408 memcpy(buf, nla_data(attr[NL80211_ATTR_WIPHY_NAME]),
409 nla_len(attr[NL80211_ATTR_WIPHY_NAME]));
416 static char * nl80211_ifname2phy(const char *ifname)
418 static char phy[32] = { 0 };
419 struct nl80211_msg_conveyor *req;
421 memset(phy, 0, sizeof(phy));
423 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
426 nl80211_send(req, nl80211_ifname2phy_cb, phy);
430 return phy[0] ? phy : NULL;
433 static char * nl80211_hostapd_info(const char *ifname)
436 char path[32] = { 0 };
437 static char buf[4096] = { 0 };
440 if ((phy = nl80211_ifname2phy(ifname)) != NULL)
442 snprintf(path, sizeof(path), "/var/run/hostapd-%s.conf", phy);
444 if ((conf = fopen(path, "r")) != NULL)
446 fread(buf, sizeof(buf) - 1, 1, conf);
456 static inline int nl80211_wpactl_recv(int sock, char *buf, int blen)
459 struct timeval tv = { 2, 0 };
464 memset(buf, 0, blen);
467 if (select(sock + 1, &rfds, NULL, NULL, &tv) < 0)
470 if (!FD_ISSET(sock, &rfds))
473 return recv(sock, buf, blen, 0);
476 static char * nl80211_wpactl_info(const char *ifname, const char *cmd,
482 size_t remote_length, local_length;
483 static char buffer[10240] = { 0 };
485 struct sockaddr_un local = { 0 };
486 struct sockaddr_un remote = { 0 };
489 sock = socket(PF_UNIX, SOCK_DGRAM, 0);
493 remote.sun_family = AF_UNIX;
494 remote_length = sizeof(remote.sun_family) + sprintf(remote.sun_path,
495 "/var/run/wpa_supplicant-%s/%s", ifname, ifname);
497 if (fcntl(sock, F_SETFD, fcntl(sock, F_GETFD) | FD_CLOEXEC) < 0)
500 if (connect(sock, (struct sockaddr *) &remote, remote_length))
503 local.sun_family = AF_UNIX;
504 local_length = sizeof(local.sun_family) +
505 sprintf(local.sun_path, "/var/run/iwinfo-%s-%d", ifname, getpid());
507 if (bind(sock, (struct sockaddr *) &local, local_length))
513 send(sock, "ATTACH", 6, 0);
515 if (nl80211_wpactl_recv(sock, buffer, sizeof(buffer)) <= 0)
520 send(sock, cmd, strlen(cmd), 0);
522 while( numtry++ < 5 )
524 if (nl80211_wpactl_recv(sock, buffer, sizeof(buffer)) <= 0)
532 if ((!event && buffer[0] != '<') || (event && strstr(buffer, event)))
541 if (local.sun_family)
542 unlink(local.sun_path);
547 static inline int nl80211_readint(const char *path)
553 if ((fd = open(path, O_RDONLY)) > -1)
555 if (read(fd, buffer, sizeof(buffer)) > 0)
564 static char * nl80211_phy2ifname(const char *ifname)
566 int fd, ifidx = -1, cifidx = -1, phyidx = -1;
568 static char nif[IFNAMSIZ] = { 0 };
575 else if (!strncmp(ifname, "phy", 3))
576 phyidx = atoi(&ifname[3]);
577 else if (!strncmp(ifname, "radio", 5))
578 phyidx = atoi(&ifname[5]);
580 memset(nif, 0, sizeof(nif));
584 if ((d = opendir("/sys/class/net")) != NULL)
586 while ((e = readdir(d)) != NULL)
588 snprintf(buffer, sizeof(buffer),
589 "/sys/class/net/%s/phy80211/index", e->d_name);
591 if (nl80211_readint(buffer) == phyidx)
593 snprintf(buffer, sizeof(buffer),
594 "/sys/class/net/%s/ifindex", e->d_name);
596 if ((cifidx = nl80211_readint(buffer)) >= 0 &&
597 ((ifidx < 0) || (cifidx < ifidx)))
600 strncpy(nif, e->d_name, sizeof(nif));
609 return nif[0] ? nif : NULL;
612 static char * nl80211_ifadd(const char *ifname)
616 static char nif[IFNAMSIZ] = { 0 };
617 struct nl80211_msg_conveyor *req, *res;
619 req = nl80211_msg(ifname, NL80211_CMD_NEW_INTERFACE, 0);
622 snprintf(nif, sizeof(nif), "tmp.%s", ifname);
624 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, nif);
625 NLA_PUT_U32(req->msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_STATION);
627 nl80211_send(req, NULL, NULL);
638 static void nl80211_ifdel(const char *ifname)
640 struct nl80211_msg_conveyor *req;
642 req = nl80211_msg(ifname, NL80211_CMD_DEL_INTERFACE, 0);
645 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, ifname);
647 nl80211_send(req, NULL, NULL);
654 static void nl80211_hostapd_hup(const char *ifname)
658 char *phy = nl80211_ifname2phy(ifname);
662 snprintf(buf, sizeof(buf), "/var/run/wifi-%s.pid", phy);
663 if ((fd = open(buf, O_RDONLY)) > 0)
665 if (read(fd, buf, sizeof(buf)) > 0)
677 int nl80211_probe(const char *ifname)
679 return !!nl80211_ifname2phy(ifname);
682 void nl80211_close(void)
687 genl_family_put(nls->nlctrl);
690 genl_family_put(nls->nl80211);
693 nl_socket_free(nls->nl_sock);
696 nl_cache_free(nls->nl_cache);
703 int nl80211_get_mode(const char *ifname, int *buf)
705 return wext_get_mode(ifname, buf);
708 int nl80211_get_ssid(const char *ifname, char *buf)
712 if (!wext_get_ssid(ifname, buf))
716 else if ((ssid = nl80211_hostapd_info(ifname)) &&
717 (ssid = nl80211_getval(ifname, ssid, "ssid")))
719 memcpy(buf, ssid, strlen(ssid));
726 int nl80211_get_bssid(const char *ifname, char *buf)
729 unsigned char mac[6];
731 if (!wext_get_bssid(ifname, buf))
735 else if ((bssid = nl80211_hostapd_info(ifname)) &&
736 (bssid = nl80211_getval(ifname, bssid, "bssid")))
738 mac[0] = strtol(&bssid[0], NULL, 16);
739 mac[1] = strtol(&bssid[3], NULL, 16);
740 mac[2] = strtol(&bssid[6], NULL, 16);
741 mac[3] = strtol(&bssid[9], NULL, 16);
742 mac[4] = strtol(&bssid[12], NULL, 16);
743 mac[5] = strtol(&bssid[15], NULL, 16);
745 sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
746 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
754 int nl80211_get_channel(const char *ifname, int *buf)
758 if (!wext_get_channel(ifname, buf))
761 else if ((first = nl80211_phy2ifname(nl80211_ifname2phy(ifname))) != NULL)
762 return wext_get_channel(first, buf);
767 int nl80211_get_frequency(const char *ifname, int *buf)
771 if (!wext_get_frequency(ifname, buf))
774 else if ((first = nl80211_phy2ifname(nl80211_ifname2phy(ifname))) != NULL)
775 return wext_get_frequency(first, buf);
780 int nl80211_get_txpower(const char *ifname, int *buf)
782 return wext_get_txpower(ifname, buf);
786 static int nl80211_fill_signal_cb(struct nl_msg *msg, void *arg)
790 struct nl80211_rssi_rate *rr = arg;
791 struct nlattr **attr = nl80211_parse(msg);
792 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
793 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
795 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
796 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
797 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
798 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
799 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
800 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
801 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
802 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
803 [NL80211_STA_INFO_LLID] = { .type = NLA_U16 },
804 [NL80211_STA_INFO_PLID] = { .type = NLA_U16 },
805 [NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 },
808 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
809 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
810 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
811 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
812 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
815 if (attr[NL80211_ATTR_STA_INFO])
817 if (!nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
818 attr[NL80211_ATTR_STA_INFO], stats_policy))
820 if (sinfo[NL80211_STA_INFO_SIGNAL])
822 dbm = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
823 rr->rssi = rr->rssi ? (int8_t)((rr->rssi + dbm) / 2) : dbm;
826 if (sinfo[NL80211_STA_INFO_TX_BITRATE])
828 if (!nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
829 sinfo[NL80211_STA_INFO_TX_BITRATE],
832 if (rinfo[NL80211_RATE_INFO_BITRATE])
834 mbit = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]);
836 ? (int16_t)((rr->rate + mbit) / 2) : mbit;
846 static void nl80211_fill_signal(const char *ifname, struct nl80211_rssi_rate *r)
850 struct nl80211_msg_conveyor *req;
855 if ((d = opendir("/sys/class/net")) != NULL)
857 while ((de = readdir(d)) != NULL)
859 if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
860 (!de->d_name[strlen(ifname)] ||
861 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
863 req = nl80211_msg(de->d_name, NL80211_CMD_GET_STATION,
868 nl80211_send(req, nl80211_fill_signal_cb, r);
878 int nl80211_get_bitrate(const char *ifname, int *buf)
880 struct nl80211_rssi_rate rr;
882 if (!wext_get_bitrate(ifname, buf))
885 nl80211_fill_signal(ifname, &rr);
889 *buf = (rr.rate * 100);
896 int nl80211_get_signal(const char *ifname, int *buf)
898 struct nl80211_rssi_rate rr;
900 if (!wext_get_signal(ifname, buf))
903 nl80211_fill_signal(ifname, &rr);
914 static int nl80211_get_noise_cb(struct nl_msg *msg, void *arg)
917 struct nlattr **tb = nl80211_parse(msg);
918 struct nlattr *si[NL80211_SURVEY_INFO_MAX + 1];
920 static struct nla_policy sp[NL80211_SURVEY_INFO_MAX + 1] = {
921 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
922 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
925 if (!tb[NL80211_ATTR_SURVEY_INFO])
928 if (nla_parse_nested(si, NL80211_SURVEY_INFO_MAX,
929 tb[NL80211_ATTR_SURVEY_INFO], sp))
932 if (!si[NL80211_SURVEY_INFO_NOISE])
935 if (!*noise || si[NL80211_SURVEY_INFO_IN_USE])
936 *noise = (int8_t)nla_get_u8(si[NL80211_SURVEY_INFO_NOISE]);
942 int nl80211_get_noise(const char *ifname, int *buf)
945 struct nl80211_msg_conveyor *req;
947 req = nl80211_msg(ifname, NL80211_CMD_GET_SURVEY, NLM_F_DUMP);
952 nl80211_send(req, nl80211_get_noise_cb, &noise);
965 int nl80211_get_quality(const char *ifname, int *buf)
969 if (wext_get_quality(ifname, buf))
973 if (!nl80211_get_signal(ifname, &signal))
975 /* A positive signal level is usually just a quality
976 * value, pass through as-is */
982 /* The cfg80211 wext compat layer assumes a signal range
983 * of -110 dBm to -40 dBm, the quality value is derived
984 * by adding 110 to the signal level */
989 else if (signal > -40)
992 *buf = (signal + 110);
1000 int nl80211_get_quality_max(const char *ifname, int *buf)
1002 if (wext_get_quality_max(ifname, buf))
1003 /* The cfg80211 wext compat layer assumes a maximum
1010 int nl80211_get_encryption(const char *ifname, char *buf)
1015 struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf;
1017 /* WPA supplicant */
1018 if ((res = nl80211_wpactl_info(ifname, "STATUS", NULL)) &&
1019 (val = nl80211_getval(NULL, res, "pairwise_cipher")))
1022 if (strstr(val, "WEP"))
1024 if (strstr(val, "WEP-40"))
1025 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1027 else if (strstr(val, "WEP-104"))
1028 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1031 c->group_ciphers = c->pair_ciphers;
1033 c->auth_suites |= IWINFO_KMGMT_NONE;
1034 c->auth_algs |= IWINFO_AUTH_OPEN; /* XXX: assumption */
1040 if (strstr(val, "TKIP"))
1041 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1043 else if (strstr(val, "CCMP"))
1044 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1046 else if (strstr(val, "NONE"))
1047 c->pair_ciphers |= IWINFO_CIPHER_NONE;
1049 else if (strstr(val, "WEP-40"))
1050 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1052 else if (strstr(val, "WEP-104"))
1053 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1056 if ((val = nl80211_getval(NULL, res, "group_cipher")))
1058 if (strstr(val, "TKIP"))
1059 c->group_ciphers |= IWINFO_CIPHER_TKIP;
1061 else if (strstr(val, "CCMP"))
1062 c->group_ciphers |= IWINFO_CIPHER_CCMP;
1064 else if (strstr(val, "NONE"))
1065 c->group_ciphers |= IWINFO_CIPHER_NONE;
1067 else if (strstr(val, "WEP-40"))
1068 c->group_ciphers |= IWINFO_CIPHER_WEP40;
1070 else if (strstr(val, "WEP-104"))
1071 c->group_ciphers |= IWINFO_CIPHER_WEP104;
1075 if ((val = nl80211_getval(NULL, res, "key_mgmt")))
1077 if (strstr(val, "WPA2"))
1080 else if (strstr(val, "WPA"))
1084 if (strstr(val, "PSK"))
1085 c->auth_suites |= IWINFO_KMGMT_PSK;
1087 else if (strstr(val, "EAP") || strstr(val, "802.1X"))
1088 c->auth_suites |= IWINFO_KMGMT_8021x;
1090 else if (strstr(val, "NONE"))
1091 c->auth_suites |= IWINFO_KMGMT_NONE;
1094 c->enabled = (c->wpa_version && c->auth_suites) ? 1 : 0;
1101 else if ((res = nl80211_hostapd_info(ifname)))
1103 if ((val = nl80211_getval(ifname, res, "wpa")) != NULL)
1104 c->wpa_version = atoi(val);
1106 val = nl80211_getval(ifname, res, "wpa_key_mgmt");
1108 if (!val || strstr(val, "PSK"))
1109 c->auth_suites |= IWINFO_KMGMT_PSK;
1111 if (val && strstr(val, "EAP"))
1112 c->auth_suites |= IWINFO_KMGMT_8021x;
1114 if (val && strstr(val, "NONE"))
1115 c->auth_suites |= IWINFO_KMGMT_NONE;
1117 if ((val = nl80211_getval(ifname, res, "wpa_pairwise")) != NULL)
1119 if (strstr(val, "TKIP"))
1120 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1122 if (strstr(val, "CCMP"))
1123 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1125 if (strstr(val, "NONE"))
1126 c->pair_ciphers |= IWINFO_CIPHER_NONE;
1129 if ((val = nl80211_getval(ifname, res, "auth_algs")) != NULL)
1133 c->auth_algs |= IWINFO_AUTH_OPEN;
1137 c->auth_algs |= IWINFO_AUTH_SHARED;
1141 c->auth_algs |= IWINFO_AUTH_OPEN;
1142 c->auth_algs |= IWINFO_AUTH_SHARED;
1149 for (i = 0; i < 4; i++)
1151 snprintf(k, sizeof(k), "wep_key%d", i);
1153 if ((val = nl80211_getval(ifname, res, k)))
1155 if ((strlen(val) == 5) || (strlen(val) == 10))
1156 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1158 else if ((strlen(val) == 13) || (strlen(val) == 26))
1159 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1164 c->group_ciphers = c->pair_ciphers;
1165 c->enabled = (c->wpa_version || c->pair_ciphers) ? 1 : 0;
1174 static int nl80211_get_assoclist_cb(struct nl_msg *msg, void *arg)
1176 struct nl80211_array_buf *arr = arg;
1177 struct iwinfo_assoclist_entry *e = arr->buf;
1178 struct nlattr **attr = nl80211_parse(msg);
1179 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1180 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1182 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
1183 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
1184 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
1185 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
1186 [NL80211_STA_INFO_RX_BITRATE] = { .type = NLA_NESTED },
1187 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
1188 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1191 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1192 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1193 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1194 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1195 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1198 /* advance to end of array */
1200 memset(e, 0, sizeof(*e));
1202 if (attr[NL80211_ATTR_MAC])
1203 memcpy(e->mac, nla_data(attr[NL80211_ATTR_MAC]), 6);
1205 if (attr[NL80211_ATTR_STA_INFO] &&
1206 !nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1207 attr[NL80211_ATTR_STA_INFO], stats_policy))
1209 if (sinfo[NL80211_STA_INFO_SIGNAL])
1210 e->signal = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1212 if (sinfo[NL80211_STA_INFO_INACTIVE_TIME])
1213 e->inactive = nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]);
1215 if (sinfo[NL80211_STA_INFO_RX_PACKETS])
1216 e->rx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS]);
1218 if (sinfo[NL80211_STA_INFO_TX_PACKETS])
1219 e->tx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS]);
1221 if (sinfo[NL80211_STA_INFO_RX_BITRATE] &&
1222 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1223 sinfo[NL80211_STA_INFO_RX_BITRATE], rate_policy))
1225 if (rinfo[NL80211_RATE_INFO_BITRATE])
1227 nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]) * 100;
1229 if (rinfo[NL80211_RATE_INFO_MCS])
1230 e->rx_rate.mcs = nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]);
1232 if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
1233 e->rx_rate.is_40mhz = 1;
1235 if (rinfo[NL80211_RATE_INFO_SHORT_GI])
1236 e->rx_rate.is_short_gi = 1;
1239 if (sinfo[NL80211_STA_INFO_TX_BITRATE] &&
1240 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1241 sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy))
1243 if (rinfo[NL80211_RATE_INFO_BITRATE])
1245 nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]) * 100;
1247 if (rinfo[NL80211_RATE_INFO_MCS])
1248 e->tx_rate.mcs = nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]);
1250 if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
1251 e->tx_rate.is_40mhz = 1;
1253 if (rinfo[NL80211_RATE_INFO_SHORT_GI])
1254 e->tx_rate.is_short_gi = 1;
1258 e->noise = 0; /* filled in by caller */
1264 int nl80211_get_assoclist(const char *ifname, char *buf, int *len)
1269 struct nl80211_msg_conveyor *req;
1270 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
1271 struct iwinfo_assoclist_entry *e;
1273 if ((d = opendir("/sys/class/net")) != NULL)
1275 while ((de = readdir(d)) != NULL)
1277 if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
1278 (!de->d_name[strlen(ifname)] ||
1279 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
1281 req = nl80211_msg(de->d_name, NL80211_CMD_GET_STATION,
1286 nl80211_send(req, nl80211_get_assoclist_cb, &arr);
1294 if (!nl80211_get_noise(ifname, &noise))
1295 for (i = 0, e = arr.buf; i < arr.count; i++, e++)
1298 *len = (arr.count * sizeof(struct iwinfo_assoclist_entry));
1305 static int nl80211_get_txpwrlist_cb(struct nl_msg *msg, void *arg)
1308 int ch_cur, ch_cmp, bands_remain, freqs_remain;
1310 struct nlattr **attr = nl80211_parse(msg);
1311 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
1312 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
1313 struct nlattr *band, *freq;
1315 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1316 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1317 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1318 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1319 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1320 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1321 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1324 ch_cur = *dbm_max; /* value int* is initialized with channel by caller */
1327 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
1329 nla_parse(bands, NL80211_BAND_ATTR_MAX, nla_data(band),
1330 nla_len(band), NULL);
1332 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
1334 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
1335 nla_data(freq), nla_len(freq), freq_policy);
1337 ch_cmp = nl80211_freq2channel(nla_get_u32(
1338 freqs[NL80211_FREQUENCY_ATTR_FREQ]));
1340 if ((!ch_cur || (ch_cmp == ch_cur)) &&
1341 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER])
1343 *dbm_max = (int)(0.01 * nla_get_u32(
1344 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]));
1354 int nl80211_get_txpwrlist(const char *ifname, char *buf, int *len)
1357 int dbm_max = -1, dbm_cur, dbm_cnt;
1358 struct nl80211_msg_conveyor *req;
1359 struct iwinfo_txpwrlist_entry entry;
1361 if (nl80211_get_channel(ifname, &ch_cur))
1364 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
1367 /* initialize the value pointer with channel for callback */
1370 nl80211_send(req, nl80211_get_txpwrlist_cb, &dbm_max);
1376 for (dbm_cur = 0, dbm_cnt = 0;
1378 dbm_cur++, dbm_cnt++)
1380 entry.dbm = dbm_cur;
1381 entry.mw = iwinfo_dbm2mw(dbm_cur);
1383 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
1386 entry.dbm = dbm_max;
1387 entry.mw = iwinfo_dbm2mw(dbm_max);
1389 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
1392 *len = dbm_cnt * sizeof(entry);
1399 static void nl80211_get_scancrypto(const char *spec,
1400 struct iwinfo_crypto_entry *c)
1402 if (strstr(spec, "WPA") || strstr(spec, "WEP"))
1406 if (strstr(spec, "WPA2-") && strstr(spec, "WPA-"))
1409 else if (strstr(spec, "WPA2"))
1412 else if (strstr(spec, "WPA"))
1415 else if (strstr(spec, "WEP"))
1416 c->auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
1419 if (strstr(spec, "PSK"))
1420 c->auth_suites |= IWINFO_KMGMT_PSK;
1422 if (strstr(spec, "802.1X") || strstr(spec, "EAP"))
1423 c->auth_suites |= IWINFO_KMGMT_8021x;
1425 if (strstr(spec, "WPA-NONE"))
1426 c->auth_suites |= IWINFO_KMGMT_NONE;
1429 if (strstr(spec, "TKIP"))
1430 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1432 if (strstr(spec, "CCMP"))
1433 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1435 if (strstr(spec, "WEP-40"))
1436 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1438 if (strstr(spec, "WEP-104"))
1439 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1441 c->group_ciphers = c->pair_ciphers;
1450 struct nl80211_scanlist {
1451 struct iwinfo_scanlist_entry *e;
1456 static void nl80211_get_scanlist_ie(struct nlattr **bss,
1457 struct iwinfo_scanlist_entry *e)
1459 int ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1460 unsigned char *ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1461 static unsigned char ms_oui[3] = { 0x00, 0x50, 0xf2 };
1463 while (ielen >= 2 && ielen >= ie[1])
1468 memcpy(e->ssid, ie + 2, min(ie[1], IWINFO_ESSID_MAX_SIZE));
1472 iwinfo_parse_rsn(&e->crypto, ie + 2, ie[1],
1473 IWINFO_CIPHER_CCMP, IWINFO_KMGMT_8021x);
1476 case 221: /* Vendor */
1477 if (ie[1] >= 4 && !memcmp(ie + 2, ms_oui, 3) && ie[5] == 1)
1478 iwinfo_parse_rsn(&e->crypto, ie + 6, ie[1] - 4,
1479 IWINFO_CIPHER_TKIP, IWINFO_KMGMT_PSK);
1488 static int nl80211_get_scanlist_cb(struct nl_msg *msg, void *arg)
1493 struct nl80211_scanlist *sl = arg;
1494 struct nlattr **tb = nl80211_parse(msg);
1495 struct nlattr *bss[NL80211_BSS_MAX + 1];
1497 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1498 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1499 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1500 [NL80211_BSS_BSSID] = { },
1501 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1502 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1503 [NL80211_BSS_INFORMATION_ELEMENTS] = { },
1504 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1505 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1506 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1507 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1508 [NL80211_BSS_BEACON_IES] = { },
1511 if (!tb[NL80211_ATTR_BSS] ||
1512 nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1514 !bss[NL80211_BSS_BSSID])
1519 if (bss[NL80211_BSS_CAPABILITY])
1520 caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1524 memset(sl->e, 0, sizeof(*sl->e));
1525 memcpy(sl->e->mac, nla_data(bss[NL80211_BSS_BSSID]), 6);
1528 sl->e->mode = IWINFO_OPMODE_ADHOC;
1530 sl->e->mode = IWINFO_OPMODE_MASTER;
1533 sl->e->crypto.enabled = 1;
1535 if (bss[NL80211_BSS_FREQUENCY])
1536 sl->e->channel = nl80211_freq2channel(nla_get_u32(
1537 bss[NL80211_BSS_FREQUENCY]));
1539 if (bss[NL80211_BSS_INFORMATION_ELEMENTS])
1540 nl80211_get_scanlist_ie(bss, sl->e);
1542 if (bss[NL80211_BSS_SIGNAL_MBM])
1545 (uint8_t)((int32_t)nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]) / 100);
1547 rssi = sl->e->signal - 0x100;
1551 else if (rssi > -40)
1554 sl->e->quality = (rssi + 110);
1555 sl->e->quality_max = 70;
1558 if (sl->e->crypto.enabled && !sl->e->crypto.wpa_version)
1560 sl->e->crypto.auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
1561 sl->e->crypto.pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
1570 static int nl80211_get_scanlist_nl(const char *ifname, char *buf, int *len)
1572 struct nl80211_msg_conveyor *req;
1573 struct nl80211_scanlist sl = { .e = (struct iwinfo_scanlist_entry *)buf };
1575 req = nl80211_msg(ifname, NL80211_CMD_TRIGGER_SCAN, 0);
1578 nl80211_send(req, NULL, NULL);
1582 nl80211_wait("nl80211", "scan", NL80211_CMD_NEW_SCAN_RESULTS);
1584 req = nl80211_msg(ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
1587 nl80211_send(req, nl80211_get_scanlist_cb, &sl);
1591 *len = sl.len * sizeof(struct iwinfo_scanlist_entry);
1592 return *len ? 0 : -1;
1595 int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
1597 int freq, rssi, qmax, count;
1599 char ssid[128] = { 0 };
1600 char bssid[18] = { 0 };
1601 char cipher[256] = { 0 };
1603 /* Got a radioX pseudo interface, find some interface on it or create one */
1604 if (!strncmp(ifname, "radio", 5))
1606 /* Reuse existing interface */
1607 if ((res = nl80211_phy2ifname(ifname)) != NULL)
1609 return nl80211_get_scanlist(res, buf, len);
1612 /* Need to spawn a temporary iface for scanning */
1613 else if ((res = nl80211_ifadd(ifname)) != NULL)
1615 count = nl80211_get_scanlist(res, buf, len);
1621 struct iwinfo_scanlist_entry *e = (struct iwinfo_scanlist_entry *)buf;
1623 /* WPA supplicant */
1624 if ((res = nl80211_wpactl_info(ifname, "SCAN", "CTRL-EVENT-SCAN-RESULTS")))
1626 if ((res = nl80211_wpactl_info(ifname, "SCAN_RESULTS", NULL)))
1628 nl80211_get_quality_max(ifname, &qmax);
1630 /* skip header line */
1631 while (*res++ != '\n');
1635 while (sscanf(res, "%17s %d %d %255s%*[ \t]%127[^\n]\n",
1636 bssid, &freq, &rssi, cipher, ssid) > 0)
1639 e->mac[0] = strtol(&bssid[0], NULL, 16);
1640 e->mac[1] = strtol(&bssid[3], NULL, 16);
1641 e->mac[2] = strtol(&bssid[6], NULL, 16);
1642 e->mac[3] = strtol(&bssid[9], NULL, 16);
1643 e->mac[4] = strtol(&bssid[12], NULL, 16);
1644 e->mac[5] = strtol(&bssid[15], NULL, 16);
1647 memcpy(e->ssid, ssid, min(strlen(ssid), sizeof(e->ssid) - 1));
1649 /* Mode (assume master) */
1650 e->mode = IWINFO_OPMODE_MASTER;
1653 e->channel = nl80211_freq2channel(freq);
1661 /* The cfg80211 wext compat layer assumes a signal range
1662 * of -110 dBm to -40 dBm, the quality value is derived
1663 * by adding 110 to the signal level */
1666 else if (rssi > -40)
1669 e->quality = (rssi + 110);
1677 e->quality_max = qmax;
1680 nl80211_get_scancrypto(cipher, &e->crypto);
1682 /* advance to next line */
1683 while (*res && *res++ != '\n');
1688 memset(ssid, 0, sizeof(ssid));
1689 memset(bssid, 0, sizeof(bssid));
1690 memset(cipher, 0, sizeof(cipher));
1693 *len = count * sizeof(struct iwinfo_scanlist_entry);
1701 /* Got a temp interface, don't create yet another one */
1702 if (!strncmp(ifname, "tmp.", 4))
1704 if (!iwinfo_ifup(ifname))
1707 nl80211_get_scanlist_nl(ifname, buf, len);
1708 iwinfo_ifdown(ifname);
1712 /* Spawn a new scan interface */
1715 if (!(res = nl80211_ifadd(ifname)))
1718 if (!iwinfo_ifmac(res))
1721 /* if we can take the new interface up, the driver supports an
1722 * additional interface and there's no need to tear down the ap */
1723 if (iwinfo_ifup(res))
1725 nl80211_get_scanlist_nl(res, buf, len);
1729 /* driver cannot create secondary interface, take down ap
1731 else if (iwinfo_ifdown(ifname) && iwinfo_ifup(res))
1733 nl80211_get_scanlist_nl(res, buf, len);
1735 iwinfo_ifup(ifname);
1736 nl80211_hostapd_hup(ifname);
1748 static int nl80211_get_freqlist_cb(struct nl_msg *msg, void *arg)
1750 int bands_remain, freqs_remain;
1752 struct nl80211_array_buf *arr = arg;
1753 struct iwinfo_freqlist_entry *e = arr->buf;
1755 struct nlattr **attr = nl80211_parse(msg);
1756 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
1757 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
1758 struct nlattr *band, *freq;
1760 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1761 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1762 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1763 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1764 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1765 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1766 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1769 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
1771 nla_parse(bands, NL80211_BAND_ATTR_MAX,
1772 nla_data(band), nla_len(band), NULL);
1774 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
1776 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
1777 nla_data(freq), nla_len(freq), NULL);
1779 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ] ||
1780 freqs[NL80211_FREQUENCY_ATTR_DISABLED])
1783 e->mhz = nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]);
1784 e->channel = nl80211_freq2channel(e->mhz);
1787 freqs[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] ||
1788 freqs[NL80211_FREQUENCY_ATTR_NO_IBSS] ||
1789 freqs[NL80211_FREQUENCY_ATTR_RADAR]
1800 int nl80211_get_freqlist(const char *ifname, char *buf, int *len)
1802 struct nl80211_msg_conveyor *req;
1803 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
1805 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
1808 nl80211_send(req, nl80211_get_freqlist_cb, &arr);
1814 *len = arr.count * sizeof(struct iwinfo_freqlist_entry);
1821 static int nl80211_get_country_cb(struct nl_msg *msg, void *arg)
1824 struct nlattr **attr = nl80211_parse(msg);
1826 if (attr[NL80211_ATTR_REG_ALPHA2])
1827 memcpy(buf, nla_data(attr[NL80211_ATTR_REG_ALPHA2]), 2);
1834 int nl80211_get_country(const char *ifname, char *buf)
1837 struct nl80211_msg_conveyor *req;
1839 req = nl80211_msg(ifname, NL80211_CMD_GET_REG, 0);
1842 nl80211_send(req, nl80211_get_country_cb, buf);
1852 int nl80211_get_countrylist(const char *ifname, char *buf, int *len)
1855 struct iwinfo_country_entry *e = (struct iwinfo_country_entry *)buf;
1856 const struct iwinfo_iso3166_label *l;
1858 for (l = IWINFO_ISO3166_NAMES, count = 0; l->iso3166; l++, e++, count++)
1860 e->iso3166 = l->iso3166;
1861 e->ccode[0] = (l->iso3166 / 256);
1862 e->ccode[1] = (l->iso3166 % 256);
1865 *len = (count * sizeof(struct iwinfo_country_entry));
1869 static int nl80211_get_hwmodelist_cb(struct nl_msg *msg, void *arg)
1872 int bands_remain, freqs_remain;
1874 struct nlattr **attr = nl80211_parse(msg);
1875 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
1876 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
1877 struct nlattr *band, *freq;
1881 if (attr[NL80211_ATTR_WIPHY_BANDS])
1883 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
1885 nla_parse(bands, NL80211_BAND_ATTR_MAX,
1886 nla_data(band), nla_len(band), NULL);
1888 if (bands[NL80211_BAND_ATTR_HT_CAPA])
1889 caps = nla_get_u16(bands[NL80211_BAND_ATTR_HT_CAPA]);
1891 /* Treat any nonzero capability as 11n */
1893 *modes |= IWINFO_80211_N;
1895 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS],
1898 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
1899 nla_data(freq), nla_len(freq), NULL);
1901 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ])
1904 if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) < 2485)
1906 *modes |= IWINFO_80211_B;
1907 *modes |= IWINFO_80211_G;
1911 *modes |= IWINFO_80211_A;
1920 int nl80211_get_hwmodelist(const char *ifname, int *buf)
1922 struct nl80211_msg_conveyor *req;
1924 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
1927 nl80211_send(req, nl80211_get_hwmodelist_cb, buf);
1931 return *buf ? 0 : -1;
1934 int nl80211_get_mbssid_support(const char *ifname, int *buf)
1936 /* Test whether we can create another interface */
1937 char *nif = nl80211_ifadd(ifname);
1941 *buf = (iwinfo_ifmac(nif) && iwinfo_ifup(nif));
1952 int nl80211_get_hardware_id(const char *ifname, char *buf)
1957 /* Got a radioX pseudo interface, find some interface on it or create one */
1958 if (!strncmp(ifname, "radio", 5))
1960 /* Reuse existing interface */
1961 if ((res = nl80211_phy2ifname(ifname)) != NULL)
1963 rv = wext_get_hardware_id(res, buf);
1966 /* Need to spawn a temporary iface for finding IDs */
1967 else if ((res = nl80211_ifadd(ifname)) != NULL)
1969 rv = wext_get_hardware_id(res, buf);
1975 rv = wext_get_hardware_id(ifname, buf);
1978 /* Failed to obtain hardware IDs, search board config */
1981 rv = iwinfo_hardware_id_from_mtd((struct iwinfo_hardware_id *)buf);
1987 static const struct iwinfo_hardware_entry *
1988 nl80211_get_hardware_entry(const char *ifname)
1990 struct iwinfo_hardware_id id;
1992 if (nl80211_get_hardware_id(ifname, (char *)&id))
1995 return iwinfo_hardware(&id);
1998 int nl80211_get_hardware_name(const char *ifname, char *buf)
2000 const struct iwinfo_hardware_entry *hw;
2002 if (!(hw = nl80211_get_hardware_entry(ifname)))
2003 sprintf(buf, "Generic MAC80211");
2005 sprintf(buf, "%s %s", hw->vendor_name, hw->device_name);
2010 int nl80211_get_txpower_offset(const char *ifname, int *buf)
2012 const struct iwinfo_hardware_entry *hw;
2014 if (!(hw = nl80211_get_hardware_entry(ifname)))
2017 *buf = hw->txpower_offset;
2021 int nl80211_get_frequency_offset(const char *ifname, int *buf)
2023 const struct iwinfo_hardware_entry *hw;
2025 if (!(hw = nl80211_get_hardware_entry(ifname)))
2028 *buf = hw->frequency_offset;