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 memset(nls, 0, sizeof(*nls));
46 nls->nl_sock = nl_socket_alloc();
52 if (genl_connect(nls->nl_sock)) {
57 fd = nl_socket_get_fd(nls->nl_sock);
58 if (fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC) < 0) {
63 if (genl_ctrl_alloc_cache(nls->nl_sock, &nls->nl_cache)) {
68 nls->nl80211 = genl_ctrl_search_by_name(nls->nl_cache, "nl80211");
74 nls->nlctrl = genl_ctrl_search_by_name(nls->nl_cache, "nlctrl");
90 static int nl80211_msg_error(struct sockaddr_nl *nla,
91 struct nlmsgerr *err, void *arg)
98 static int nl80211_msg_finish(struct nl_msg *msg, void *arg)
105 static int nl80211_msg_ack(struct nl_msg *msg, void *arg)
112 static int nl80211_msg_response(struct nl_msg *msg, void *arg)
117 static void nl80211_free(struct nl80211_msg_conveyor *cv)
132 static struct nl80211_msg_conveyor * nl80211_new(struct genl_family *family,
135 static struct nl80211_msg_conveyor cv;
137 struct nl_msg *req = NULL;
138 struct nl_cb *cb = NULL;
144 cb = nl_cb_alloc(NL_CB_DEFAULT);
148 genlmsg_put(req, 0, 0, genl_family_get_id(family), 0, flags, cmd, 0);
166 static struct nl80211_msg_conveyor * nl80211_ctl(int cmd, int flags)
168 if (nl80211_init() < 0)
171 return nl80211_new(nls->nlctrl, cmd, flags);
174 static struct nl80211_msg_conveyor * nl80211_msg(const char *ifname,
177 int ifidx = -1, phyidx = -1;
178 struct nl80211_msg_conveyor *cv;
180 if (nl80211_init() < 0)
183 if (!strncmp(ifname, "phy", 3))
184 phyidx = atoi(&ifname[3]);
185 else if (!strncmp(ifname, "radio", 5))
186 phyidx = atoi(&ifname[5]);
187 else if (!strncmp(ifname, "mon.", 4))
188 ifidx = if_nametoindex(&ifname[4]);
190 ifidx = if_nametoindex(ifname);
192 if ((ifidx < 0) && (phyidx < 0))
195 cv = nl80211_new(nls->nl80211, cmd, flags);
200 NLA_PUT_U32(cv->msg, NL80211_ATTR_IFINDEX, ifidx);
203 NLA_PUT_U32(cv->msg, NL80211_ATTR_WIPHY, phyidx);
212 static struct nl80211_msg_conveyor * nl80211_send(
213 struct nl80211_msg_conveyor *cv,
214 int (*cb_func)(struct nl_msg *, void *), void *cb_arg
216 static struct nl80211_msg_conveyor rcv;
220 nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, cb_func, cb_arg);
222 nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, nl80211_msg_response, &rcv);
224 if (nl_send_auto_complete(nls->nl_sock, cv->msg) < 0)
227 nl_cb_err(cv->cb, NL_CB_CUSTOM, nl80211_msg_error, &err);
228 nl_cb_set(cv->cb, NL_CB_FINISH, NL_CB_CUSTOM, nl80211_msg_finish, &err);
229 nl_cb_set(cv->cb, NL_CB_ACK, NL_CB_CUSTOM, nl80211_msg_ack, &err);
232 nl_recvmsgs(nls->nl_sock, cv->cb);
243 static struct nlattr ** nl80211_parse(struct nl_msg *msg)
245 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
246 static struct nlattr *attr[NL80211_ATTR_MAX + 1];
248 nla_parse(attr, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
249 genlmsg_attrlen(gnlh, 0), NULL);
255 static int nl80211_subscribe_cb(struct nl_msg *msg, void *arg)
257 struct nl80211_group_conveyor *cv = arg;
259 struct nlattr **attr = nl80211_parse(msg);
260 struct nlattr *mgrpinfo[CTRL_ATTR_MCAST_GRP_MAX + 1];
264 if (!attr[CTRL_ATTR_MCAST_GROUPS])
267 nla_for_each_nested(mgrp, attr[CTRL_ATTR_MCAST_GROUPS], mgrpidx)
269 nla_parse(mgrpinfo, CTRL_ATTR_MCAST_GRP_MAX,
270 nla_data(mgrp), nla_len(mgrp), NULL);
272 if (mgrpinfo[CTRL_ATTR_MCAST_GRP_ID] &&
273 mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME] &&
274 !strncmp(nla_data(mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME]),
275 cv->name, nla_len(mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME])))
277 cv->id = nla_get_u32(mgrpinfo[CTRL_ATTR_MCAST_GRP_ID]);
285 static int nl80211_subscribe(const char *family, const char *group)
287 struct nl80211_group_conveyor cv = { .name = group, .id = -ENOENT };
288 struct nl80211_msg_conveyor *req;
290 req = nl80211_ctl(CTRL_CMD_GETFAMILY, 0);
293 NLA_PUT_STRING(req->msg, CTRL_ATTR_FAMILY_NAME, family);
294 nl80211_send(req, nl80211_subscribe_cb, &cv);
300 return nl_socket_add_membership(nls->nl_sock, cv.id);
304 static int nl80211_wait_cb(struct nl_msg *msg, void *arg)
306 struct nl80211_event_conveyor *cv = arg;
307 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
309 if (gnlh->cmd == cv->wait)
310 cv->recv = gnlh->cmd;
315 static int nl80211_wait_seq_check(struct nl_msg *msg, void *arg)
320 static int nl80211_wait(const char *family, const char *group, int cmd)
322 struct nl80211_event_conveyor cv = { .wait = cmd };
325 if (nl80211_subscribe(family, group))
328 cb = nl_cb_alloc(NL_CB_DEFAULT);
333 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, nl80211_wait_seq_check, NULL);
334 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, nl80211_wait_cb, &cv );
337 nl_recvmsgs(nls->nl_sock, cb);
345 static int nl80211_freq2channel(int freq)
351 return (freq - 2407) / 5;
353 return (freq / 5) - 1000;
356 static int nl80211_channel2freq(int channel, const char *band)
361 if ((channel < 14) && (!band || band[0] != 'a'))
362 return (channel * 5) + 2407;
365 return (1000 + channel) * 5;
370 static char * nl80211_getval(const char *ifname, const char *buf, const char *key)
373 char lkey[64] = { 0 };
374 const char *ln = buf;
375 static char lval[256] = { 0 };
377 int matched_if = ifname ? 0 : 1;
380 for( i = 0, len = strlen(buf); i < len; i++ )
382 if (!lkey[0] && (buf[i] == ' ' || buf[i] == '\t'))
386 else if (!lkey[0] && (buf[i] == '='))
388 if ((&buf[i] - ln) > 0)
389 memcpy(lkey, ln, min(sizeof(lkey) - 1, &buf[i] - ln));
391 else if (buf[i] == '\n')
395 memcpy(lval, ln + strlen(lkey) + 1,
396 min(sizeof(lval) - 1, &buf[i] - ln - strlen(lkey) - 1));
398 if ((ifname != NULL) &&
399 (!strcmp(lkey, "interface") || !strcmp(lkey, "bss")) )
401 matched_if = !strcmp(lval, ifname);
403 else if (matched_if && !strcmp(lkey, key))
410 memset(lkey, 0, sizeof(lkey));
411 memset(lval, 0, sizeof(lval));
418 static int nl80211_ifname2phy_cb(struct nl_msg *msg, void *arg)
421 struct nlattr **attr = nl80211_parse(msg);
423 if (attr[NL80211_ATTR_WIPHY_NAME])
424 memcpy(buf, nla_data(attr[NL80211_ATTR_WIPHY_NAME]),
425 nla_len(attr[NL80211_ATTR_WIPHY_NAME]));
432 static char * nl80211_ifname2phy(const char *ifname)
434 static char phy[32] = { 0 };
435 struct nl80211_msg_conveyor *req;
437 memset(phy, 0, sizeof(phy));
439 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
442 nl80211_send(req, nl80211_ifname2phy_cb, phy);
446 return phy[0] ? phy : NULL;
449 static char * nl80211_hostapd_info(const char *ifname)
452 char path[32] = { 0 };
453 static char buf[4096] = { 0 };
456 if ((phy = nl80211_ifname2phy(ifname)) != NULL)
458 snprintf(path, sizeof(path), "/var/run/hostapd-%s.conf", phy);
460 if ((conf = fopen(path, "r")) != NULL)
462 fread(buf, sizeof(buf) - 1, 1, conf);
472 static inline int nl80211_wpactl_recv(int sock, char *buf, int blen)
475 struct timeval tv = { 2, 0 };
480 memset(buf, 0, blen);
483 if (select(sock + 1, &rfds, NULL, NULL, &tv) < 0)
486 if (!FD_ISSET(sock, &rfds))
489 return recv(sock, buf, blen, 0);
492 static char * nl80211_wpactl_info(const char *ifname, const char *cmd,
498 size_t remote_length, local_length;
499 static char buffer[10240] = { 0 };
501 struct sockaddr_un local = { 0 };
502 struct sockaddr_un remote = { 0 };
505 sock = socket(PF_UNIX, SOCK_DGRAM, 0);
509 remote.sun_family = AF_UNIX;
510 remote_length = sizeof(remote.sun_family) + sprintf(remote.sun_path,
511 "/var/run/wpa_supplicant-%s/%s", ifname, ifname);
513 if (fcntl(sock, F_SETFD, fcntl(sock, F_GETFD) | FD_CLOEXEC) < 0)
516 if (connect(sock, (struct sockaddr *) &remote, remote_length))
519 local.sun_family = AF_UNIX;
520 local_length = sizeof(local.sun_family) +
521 sprintf(local.sun_path, "/var/run/iwinfo-%s-%d", ifname, getpid());
523 if (bind(sock, (struct sockaddr *) &local, local_length))
529 send(sock, "ATTACH", 6, 0);
531 if (nl80211_wpactl_recv(sock, buffer, sizeof(buffer)) <= 0)
536 send(sock, cmd, strlen(cmd), 0);
538 while( numtry++ < 5 )
540 if (nl80211_wpactl_recv(sock, buffer, sizeof(buffer)) <= 0)
548 if ((!event && buffer[0] != '<') || (event && strstr(buffer, event)))
557 if (local.sun_family)
558 unlink(local.sun_path);
563 static inline int nl80211_readint(const char *path)
569 if ((fd = open(path, O_RDONLY)) > -1)
571 if (read(fd, buffer, sizeof(buffer)) > 0)
580 static char * nl80211_phy2ifname(const char *ifname)
582 int fd, ifidx = -1, cifidx = -1, phyidx = -1;
584 static char nif[IFNAMSIZ] = { 0 };
591 else if (!strncmp(ifname, "phy", 3))
592 phyidx = atoi(&ifname[3]);
593 else if (!strncmp(ifname, "radio", 5))
594 phyidx = atoi(&ifname[5]);
596 memset(nif, 0, sizeof(nif));
600 if ((d = opendir("/sys/class/net")) != NULL)
602 while ((e = readdir(d)) != NULL)
604 snprintf(buffer, sizeof(buffer),
605 "/sys/class/net/%s/phy80211/index", e->d_name);
607 if (nl80211_readint(buffer) == phyidx)
609 snprintf(buffer, sizeof(buffer),
610 "/sys/class/net/%s/ifindex", e->d_name);
612 if ((cifidx = nl80211_readint(buffer)) >= 0 &&
613 ((ifidx < 0) || (cifidx < ifidx)))
616 strncpy(nif, e->d_name, sizeof(nif));
625 return nif[0] ? nif : NULL;
628 static char * nl80211_ifadd(const char *ifname)
632 static char nif[IFNAMSIZ] = { 0 };
633 struct nl80211_msg_conveyor *req, *res;
635 req = nl80211_msg(ifname, NL80211_CMD_NEW_INTERFACE, 0);
638 snprintf(nif, sizeof(nif), "tmp.%s", ifname);
640 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, nif);
641 NLA_PUT_U32(req->msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_STATION);
643 nl80211_send(req, NULL, NULL);
654 static void nl80211_ifdel(const char *ifname)
656 struct nl80211_msg_conveyor *req;
658 req = nl80211_msg(ifname, NL80211_CMD_DEL_INTERFACE, 0);
661 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, ifname);
663 nl80211_send(req, NULL, NULL);
670 static void nl80211_hostapd_hup(const char *ifname)
674 char *phy = nl80211_ifname2phy(ifname);
678 snprintf(buf, sizeof(buf), "/var/run/wifi-%s.pid", phy);
679 if ((fd = open(buf, O_RDONLY)) > 0)
681 if (read(fd, buf, sizeof(buf)) > 0)
693 int nl80211_probe(const char *ifname)
695 return !!nl80211_ifname2phy(ifname);
698 void nl80211_close(void)
703 genl_family_put(nls->nlctrl);
706 genl_family_put(nls->nl80211);
709 nl_socket_free(nls->nl_sock);
712 nl_cache_free(nls->nl_cache);
719 int nl80211_get_mode(const char *ifname, int *buf)
721 return wext_get_mode(ifname, buf);
724 int nl80211_get_ssid(const char *ifname, char *buf)
728 if (!wext_get_ssid(ifname, buf))
732 else if ((ssid = nl80211_hostapd_info(ifname)) &&
733 (ssid = nl80211_getval(ifname, ssid, "ssid")))
735 memcpy(buf, ssid, strlen(ssid));
742 int nl80211_get_bssid(const char *ifname, char *buf)
745 unsigned char mac[6];
747 if (!wext_get_bssid(ifname, buf))
751 else if ((bssid = nl80211_hostapd_info(ifname)) &&
752 (bssid = nl80211_getval(ifname, bssid, "bssid")))
754 mac[0] = strtol(&bssid[0], NULL, 16);
755 mac[1] = strtol(&bssid[3], NULL, 16);
756 mac[2] = strtol(&bssid[6], NULL, 16);
757 mac[3] = strtol(&bssid[9], NULL, 16);
758 mac[4] = strtol(&bssid[12], NULL, 16);
759 mac[5] = strtol(&bssid[15], NULL, 16);
761 sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
762 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
771 static int nl80211_get_frequency_cb(struct nl_msg *msg, void *arg)
774 struct nlattr **attr = nl80211_parse(msg);
775 struct nlattr *binfo[NL80211_BSS_MAX + 1];
777 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
778 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
781 if (attr[NL80211_ATTR_BSS] &&
782 !nla_parse_nested(binfo, NL80211_BSS_MAX,
783 attr[NL80211_ATTR_BSS], bss_policy))
785 if (binfo[NL80211_BSS_FREQUENCY])
786 *freq = nla_get_u32(binfo[NL80211_BSS_FREQUENCY]);
792 int nl80211_get_frequency(const char *ifname, int *buf)
795 struct nl80211_msg_conveyor *req;
799 if ((res = nl80211_hostapd_info(ifname)) &&
800 (channel = nl80211_getval(NULL, res, "channel")))
802 *buf = nl80211_channel2freq(atoi(channel),
803 nl80211_getval(NULL, res, "hw_mode"));
807 res = nl80211_phy2ifname(ifname);
808 req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
812 nl80211_send(req, nl80211_get_frequency_cb, buf);
817 return (*buf == 0) ? -1 : 0;
820 int nl80211_get_channel(const char *ifname, int *buf)
822 if (!nl80211_get_frequency(ifname, buf))
824 *buf = nl80211_freq2channel(*buf);
832 int nl80211_get_txpower(const char *ifname, int *buf)
834 return wext_get_txpower(ifname, buf);
838 static int nl80211_fill_signal_cb(struct nl_msg *msg, void *arg)
842 struct nl80211_rssi_rate *rr = arg;
843 struct nlattr **attr = nl80211_parse(msg);
844 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
845 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
847 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
848 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
849 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
850 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
851 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
852 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
853 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
854 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
855 [NL80211_STA_INFO_LLID] = { .type = NLA_U16 },
856 [NL80211_STA_INFO_PLID] = { .type = NLA_U16 },
857 [NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 },
860 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
861 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
862 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
863 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
864 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
867 if (attr[NL80211_ATTR_STA_INFO])
869 if (!nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
870 attr[NL80211_ATTR_STA_INFO], stats_policy))
872 if (sinfo[NL80211_STA_INFO_SIGNAL])
874 dbm = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
875 rr->rssi = rr->rssi ? (int8_t)((rr->rssi + dbm) / 2) : dbm;
878 if (sinfo[NL80211_STA_INFO_TX_BITRATE])
880 if (!nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
881 sinfo[NL80211_STA_INFO_TX_BITRATE],
884 if (rinfo[NL80211_RATE_INFO_BITRATE])
886 mbit = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]);
888 ? (int16_t)((rr->rate + mbit) / 2) : mbit;
898 static void nl80211_fill_signal(const char *ifname, struct nl80211_rssi_rate *r)
902 struct nl80211_msg_conveyor *req;
907 if ((d = opendir("/sys/class/net")) != NULL)
909 while ((de = readdir(d)) != NULL)
911 if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
912 (!de->d_name[strlen(ifname)] ||
913 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
915 req = nl80211_msg(de->d_name, NL80211_CMD_GET_STATION,
920 nl80211_send(req, nl80211_fill_signal_cb, r);
930 int nl80211_get_bitrate(const char *ifname, int *buf)
932 struct nl80211_rssi_rate rr;
934 if (!wext_get_bitrate(ifname, buf))
937 nl80211_fill_signal(ifname, &rr);
941 *buf = (rr.rate * 100);
948 int nl80211_get_signal(const char *ifname, int *buf)
950 struct nl80211_rssi_rate rr;
952 if (!wext_get_signal(ifname, buf))
955 nl80211_fill_signal(ifname, &rr);
966 static int nl80211_get_noise_cb(struct nl_msg *msg, void *arg)
969 struct nlattr **tb = nl80211_parse(msg);
970 struct nlattr *si[NL80211_SURVEY_INFO_MAX + 1];
972 static struct nla_policy sp[NL80211_SURVEY_INFO_MAX + 1] = {
973 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
974 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
977 if (!tb[NL80211_ATTR_SURVEY_INFO])
980 if (nla_parse_nested(si, NL80211_SURVEY_INFO_MAX,
981 tb[NL80211_ATTR_SURVEY_INFO], sp))
984 if (!si[NL80211_SURVEY_INFO_NOISE])
987 if (!*noise || si[NL80211_SURVEY_INFO_IN_USE])
988 *noise = (int8_t)nla_get_u8(si[NL80211_SURVEY_INFO_NOISE]);
994 int nl80211_get_noise(const char *ifname, int *buf)
997 struct nl80211_msg_conveyor *req;
999 req = nl80211_msg(ifname, NL80211_CMD_GET_SURVEY, NLM_F_DUMP);
1004 nl80211_send(req, nl80211_get_noise_cb, &noise);
1017 int nl80211_get_quality(const char *ifname, int *buf)
1021 if (wext_get_quality(ifname, buf))
1025 if (!nl80211_get_signal(ifname, &signal))
1027 /* A positive signal level is usually just a quality
1028 * value, pass through as-is */
1034 /* The cfg80211 wext compat layer assumes a signal range
1035 * of -110 dBm to -40 dBm, the quality value is derived
1036 * by adding 110 to the signal level */
1041 else if (signal > -40)
1044 *buf = (signal + 110);
1052 int nl80211_get_quality_max(const char *ifname, int *buf)
1054 if (wext_get_quality_max(ifname, buf))
1055 /* The cfg80211 wext compat layer assumes a maximum
1062 int nl80211_get_encryption(const char *ifname, char *buf)
1067 struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf;
1069 /* WPA supplicant */
1070 if ((res = nl80211_wpactl_info(ifname, "STATUS", NULL)) &&
1071 (val = nl80211_getval(NULL, res, "pairwise_cipher")))
1074 if (strstr(val, "WEP"))
1076 if (strstr(val, "WEP-40"))
1077 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1079 else if (strstr(val, "WEP-104"))
1080 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1083 c->group_ciphers = c->pair_ciphers;
1085 c->auth_suites |= IWINFO_KMGMT_NONE;
1086 c->auth_algs |= IWINFO_AUTH_OPEN; /* XXX: assumption */
1092 if (strstr(val, "TKIP"))
1093 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1095 else if (strstr(val, "CCMP"))
1096 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1098 else if (strstr(val, "NONE"))
1099 c->pair_ciphers |= IWINFO_CIPHER_NONE;
1101 else if (strstr(val, "WEP-40"))
1102 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1104 else if (strstr(val, "WEP-104"))
1105 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1108 if ((val = nl80211_getval(NULL, res, "group_cipher")))
1110 if (strstr(val, "TKIP"))
1111 c->group_ciphers |= IWINFO_CIPHER_TKIP;
1113 else if (strstr(val, "CCMP"))
1114 c->group_ciphers |= IWINFO_CIPHER_CCMP;
1116 else if (strstr(val, "NONE"))
1117 c->group_ciphers |= IWINFO_CIPHER_NONE;
1119 else if (strstr(val, "WEP-40"))
1120 c->group_ciphers |= IWINFO_CIPHER_WEP40;
1122 else if (strstr(val, "WEP-104"))
1123 c->group_ciphers |= IWINFO_CIPHER_WEP104;
1127 if ((val = nl80211_getval(NULL, res, "key_mgmt")))
1129 if (strstr(val, "WPA2"))
1132 else if (strstr(val, "WPA"))
1136 if (strstr(val, "PSK"))
1137 c->auth_suites |= IWINFO_KMGMT_PSK;
1139 else if (strstr(val, "EAP") || strstr(val, "802.1X"))
1140 c->auth_suites |= IWINFO_KMGMT_8021x;
1142 else if (strstr(val, "NONE"))
1143 c->auth_suites |= IWINFO_KMGMT_NONE;
1146 c->enabled = (c->wpa_version && c->auth_suites) ? 1 : 0;
1153 else if ((res = nl80211_hostapd_info(ifname)))
1155 if ((val = nl80211_getval(ifname, res, "wpa")) != NULL)
1156 c->wpa_version = atoi(val);
1158 val = nl80211_getval(ifname, res, "wpa_key_mgmt");
1160 if (!val || strstr(val, "PSK"))
1161 c->auth_suites |= IWINFO_KMGMT_PSK;
1163 if (val && strstr(val, "EAP"))
1164 c->auth_suites |= IWINFO_KMGMT_8021x;
1166 if (val && strstr(val, "NONE"))
1167 c->auth_suites |= IWINFO_KMGMT_NONE;
1169 if ((val = nl80211_getval(ifname, res, "wpa_pairwise")) != NULL)
1171 if (strstr(val, "TKIP"))
1172 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1174 if (strstr(val, "CCMP"))
1175 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1177 if (strstr(val, "NONE"))
1178 c->pair_ciphers |= IWINFO_CIPHER_NONE;
1181 if ((val = nl80211_getval(ifname, res, "auth_algs")) != NULL)
1185 c->auth_algs |= IWINFO_AUTH_OPEN;
1189 c->auth_algs |= IWINFO_AUTH_SHARED;
1193 c->auth_algs |= IWINFO_AUTH_OPEN;
1194 c->auth_algs |= IWINFO_AUTH_SHARED;
1201 for (i = 0; i < 4; i++)
1203 snprintf(k, sizeof(k), "wep_key%d", i);
1205 if ((val = nl80211_getval(ifname, res, k)))
1207 if ((strlen(val) == 5) || (strlen(val) == 10))
1208 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1210 else if ((strlen(val) == 13) || (strlen(val) == 26))
1211 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1216 c->group_ciphers = c->pair_ciphers;
1217 c->enabled = (c->wpa_version || c->pair_ciphers) ? 1 : 0;
1226 static int nl80211_get_assoclist_cb(struct nl_msg *msg, void *arg)
1228 struct nl80211_array_buf *arr = arg;
1229 struct iwinfo_assoclist_entry *e = arr->buf;
1230 struct nlattr **attr = nl80211_parse(msg);
1231 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1232 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1234 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
1235 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
1236 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
1237 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
1238 [NL80211_STA_INFO_RX_BITRATE] = { .type = NLA_NESTED },
1239 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
1240 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1243 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1244 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1245 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1246 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1247 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1250 /* advance to end of array */
1252 memset(e, 0, sizeof(*e));
1254 if (attr[NL80211_ATTR_MAC])
1255 memcpy(e->mac, nla_data(attr[NL80211_ATTR_MAC]), 6);
1257 if (attr[NL80211_ATTR_STA_INFO] &&
1258 !nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1259 attr[NL80211_ATTR_STA_INFO], stats_policy))
1261 if (sinfo[NL80211_STA_INFO_SIGNAL])
1262 e->signal = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1264 if (sinfo[NL80211_STA_INFO_INACTIVE_TIME])
1265 e->inactive = nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]);
1267 if (sinfo[NL80211_STA_INFO_RX_PACKETS])
1268 e->rx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS]);
1270 if (sinfo[NL80211_STA_INFO_TX_PACKETS])
1271 e->tx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS]);
1273 if (sinfo[NL80211_STA_INFO_RX_BITRATE] &&
1274 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1275 sinfo[NL80211_STA_INFO_RX_BITRATE], rate_policy))
1277 if (rinfo[NL80211_RATE_INFO_BITRATE])
1279 nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]) * 100;
1281 if (rinfo[NL80211_RATE_INFO_MCS])
1282 e->rx_rate.mcs = nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]);
1284 if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
1285 e->rx_rate.is_40mhz = 1;
1287 if (rinfo[NL80211_RATE_INFO_SHORT_GI])
1288 e->rx_rate.is_short_gi = 1;
1291 if (sinfo[NL80211_STA_INFO_TX_BITRATE] &&
1292 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1293 sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy))
1295 if (rinfo[NL80211_RATE_INFO_BITRATE])
1297 nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]) * 100;
1299 if (rinfo[NL80211_RATE_INFO_MCS])
1300 e->tx_rate.mcs = nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]);
1302 if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
1303 e->tx_rate.is_40mhz = 1;
1305 if (rinfo[NL80211_RATE_INFO_SHORT_GI])
1306 e->tx_rate.is_short_gi = 1;
1310 e->noise = 0; /* filled in by caller */
1316 int nl80211_get_assoclist(const char *ifname, char *buf, int *len)
1321 struct nl80211_msg_conveyor *req;
1322 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
1323 struct iwinfo_assoclist_entry *e;
1325 if ((d = opendir("/sys/class/net")) != NULL)
1327 while ((de = readdir(d)) != NULL)
1329 if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
1330 (!de->d_name[strlen(ifname)] ||
1331 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
1333 req = nl80211_msg(de->d_name, NL80211_CMD_GET_STATION,
1338 nl80211_send(req, nl80211_get_assoclist_cb, &arr);
1346 if (!nl80211_get_noise(ifname, &noise))
1347 for (i = 0, e = arr.buf; i < arr.count; i++, e++)
1350 *len = (arr.count * sizeof(struct iwinfo_assoclist_entry));
1357 static int nl80211_get_txpwrlist_cb(struct nl_msg *msg, void *arg)
1360 int ch_cur, ch_cmp, bands_remain, freqs_remain;
1362 struct nlattr **attr = nl80211_parse(msg);
1363 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
1364 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
1365 struct nlattr *band, *freq;
1367 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1368 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1369 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1370 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1371 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1372 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1373 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1376 ch_cur = *dbm_max; /* value int* is initialized with channel by caller */
1379 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
1381 nla_parse(bands, NL80211_BAND_ATTR_MAX, nla_data(band),
1382 nla_len(band), NULL);
1384 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
1386 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
1387 nla_data(freq), nla_len(freq), freq_policy);
1389 ch_cmp = nl80211_freq2channel(nla_get_u32(
1390 freqs[NL80211_FREQUENCY_ATTR_FREQ]));
1392 if ((!ch_cur || (ch_cmp == ch_cur)) &&
1393 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER])
1395 *dbm_max = (int)(0.01 * nla_get_u32(
1396 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]));
1406 int nl80211_get_txpwrlist(const char *ifname, char *buf, int *len)
1409 int dbm_max = -1, dbm_cur, dbm_cnt;
1410 struct nl80211_msg_conveyor *req;
1411 struct iwinfo_txpwrlist_entry entry;
1413 if (nl80211_get_channel(ifname, &ch_cur))
1416 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
1419 /* initialize the value pointer with channel for callback */
1422 nl80211_send(req, nl80211_get_txpwrlist_cb, &dbm_max);
1428 for (dbm_cur = 0, dbm_cnt = 0;
1430 dbm_cur++, dbm_cnt++)
1432 entry.dbm = dbm_cur;
1433 entry.mw = iwinfo_dbm2mw(dbm_cur);
1435 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
1438 entry.dbm = dbm_max;
1439 entry.mw = iwinfo_dbm2mw(dbm_max);
1441 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
1444 *len = dbm_cnt * sizeof(entry);
1451 static void nl80211_get_scancrypto(const char *spec,
1452 struct iwinfo_crypto_entry *c)
1454 if (strstr(spec, "WPA") || strstr(spec, "WEP"))
1458 if (strstr(spec, "WPA2-") && strstr(spec, "WPA-"))
1461 else if (strstr(spec, "WPA2"))
1464 else if (strstr(spec, "WPA"))
1467 else if (strstr(spec, "WEP"))
1468 c->auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
1471 if (strstr(spec, "PSK"))
1472 c->auth_suites |= IWINFO_KMGMT_PSK;
1474 if (strstr(spec, "802.1X") || strstr(spec, "EAP"))
1475 c->auth_suites |= IWINFO_KMGMT_8021x;
1477 if (strstr(spec, "WPA-NONE"))
1478 c->auth_suites |= IWINFO_KMGMT_NONE;
1481 if (strstr(spec, "TKIP"))
1482 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1484 if (strstr(spec, "CCMP"))
1485 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1487 if (strstr(spec, "WEP-40"))
1488 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1490 if (strstr(spec, "WEP-104"))
1491 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1493 c->group_ciphers = c->pair_ciphers;
1502 struct nl80211_scanlist {
1503 struct iwinfo_scanlist_entry *e;
1508 static void nl80211_get_scanlist_ie(struct nlattr **bss,
1509 struct iwinfo_scanlist_entry *e)
1511 int ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1512 unsigned char *ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1513 static unsigned char ms_oui[3] = { 0x00, 0x50, 0xf2 };
1515 while (ielen >= 2 && ielen >= ie[1])
1520 memcpy(e->ssid, ie + 2, min(ie[1], IWINFO_ESSID_MAX_SIZE));
1524 iwinfo_parse_rsn(&e->crypto, ie + 2, ie[1],
1525 IWINFO_CIPHER_CCMP, IWINFO_KMGMT_8021x);
1528 case 221: /* Vendor */
1529 if (ie[1] >= 4 && !memcmp(ie + 2, ms_oui, 3) && ie[5] == 1)
1530 iwinfo_parse_rsn(&e->crypto, ie + 6, ie[1] - 4,
1531 IWINFO_CIPHER_TKIP, IWINFO_KMGMT_PSK);
1540 static int nl80211_get_scanlist_cb(struct nl_msg *msg, void *arg)
1545 struct nl80211_scanlist *sl = arg;
1546 struct nlattr **tb = nl80211_parse(msg);
1547 struct nlattr *bss[NL80211_BSS_MAX + 1];
1549 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1550 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1551 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1552 [NL80211_BSS_BSSID] = { },
1553 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1554 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1555 [NL80211_BSS_INFORMATION_ELEMENTS] = { },
1556 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1557 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1558 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1559 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1560 [NL80211_BSS_BEACON_IES] = { },
1563 if (!tb[NL80211_ATTR_BSS] ||
1564 nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1566 !bss[NL80211_BSS_BSSID])
1571 if (bss[NL80211_BSS_CAPABILITY])
1572 caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1576 memset(sl->e, 0, sizeof(*sl->e));
1577 memcpy(sl->e->mac, nla_data(bss[NL80211_BSS_BSSID]), 6);
1580 sl->e->mode = IWINFO_OPMODE_ADHOC;
1582 sl->e->mode = IWINFO_OPMODE_MASTER;
1585 sl->e->crypto.enabled = 1;
1587 if (bss[NL80211_BSS_FREQUENCY])
1588 sl->e->channel = nl80211_freq2channel(nla_get_u32(
1589 bss[NL80211_BSS_FREQUENCY]));
1591 if (bss[NL80211_BSS_INFORMATION_ELEMENTS])
1592 nl80211_get_scanlist_ie(bss, sl->e);
1594 if (bss[NL80211_BSS_SIGNAL_MBM])
1597 (uint8_t)((int32_t)nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]) / 100);
1599 rssi = sl->e->signal - 0x100;
1603 else if (rssi > -40)
1606 sl->e->quality = (rssi + 110);
1607 sl->e->quality_max = 70;
1610 if (sl->e->crypto.enabled && !sl->e->crypto.wpa_version)
1612 sl->e->crypto.auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
1613 sl->e->crypto.pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
1622 static int nl80211_get_scanlist_nl(const char *ifname, char *buf, int *len)
1624 struct nl80211_msg_conveyor *req;
1625 struct nl80211_scanlist sl = { .e = (struct iwinfo_scanlist_entry *)buf };
1627 req = nl80211_msg(ifname, NL80211_CMD_TRIGGER_SCAN, 0);
1630 nl80211_send(req, NULL, NULL);
1634 nl80211_wait("nl80211", "scan", NL80211_CMD_NEW_SCAN_RESULTS);
1636 req = nl80211_msg(ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
1639 nl80211_send(req, nl80211_get_scanlist_cb, &sl);
1643 *len = sl.len * sizeof(struct iwinfo_scanlist_entry);
1644 return *len ? 0 : -1;
1647 int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
1649 int freq, rssi, qmax, count;
1651 char ssid[128] = { 0 };
1652 char bssid[18] = { 0 };
1653 char cipher[256] = { 0 };
1655 /* Got a radioX pseudo interface, find some interface on it or create one */
1656 if (!strncmp(ifname, "radio", 5))
1658 /* Reuse existing interface */
1659 if ((res = nl80211_phy2ifname(ifname)) != NULL)
1661 return nl80211_get_scanlist(res, buf, len);
1664 /* Need to spawn a temporary iface for scanning */
1665 else if ((res = nl80211_ifadd(ifname)) != NULL)
1667 count = nl80211_get_scanlist(res, buf, len);
1673 struct iwinfo_scanlist_entry *e = (struct iwinfo_scanlist_entry *)buf;
1675 /* WPA supplicant */
1676 if ((res = nl80211_wpactl_info(ifname, "SCAN", "CTRL-EVENT-SCAN-RESULTS")))
1678 if ((res = nl80211_wpactl_info(ifname, "SCAN_RESULTS", NULL)))
1680 nl80211_get_quality_max(ifname, &qmax);
1682 /* skip header line */
1683 while (*res++ != '\n');
1687 while (sscanf(res, "%17s %d %d %255s%*[ \t]%127[^\n]\n",
1688 bssid, &freq, &rssi, cipher, ssid) > 0)
1691 e->mac[0] = strtol(&bssid[0], NULL, 16);
1692 e->mac[1] = strtol(&bssid[3], NULL, 16);
1693 e->mac[2] = strtol(&bssid[6], NULL, 16);
1694 e->mac[3] = strtol(&bssid[9], NULL, 16);
1695 e->mac[4] = strtol(&bssid[12], NULL, 16);
1696 e->mac[5] = strtol(&bssid[15], NULL, 16);
1699 memcpy(e->ssid, ssid, min(strlen(ssid), sizeof(e->ssid) - 1));
1701 /* Mode (assume master) */
1702 e->mode = IWINFO_OPMODE_MASTER;
1705 e->channel = nl80211_freq2channel(freq);
1713 /* The cfg80211 wext compat layer assumes a signal range
1714 * of -110 dBm to -40 dBm, the quality value is derived
1715 * by adding 110 to the signal level */
1718 else if (rssi > -40)
1721 e->quality = (rssi + 110);
1729 e->quality_max = qmax;
1732 nl80211_get_scancrypto(cipher, &e->crypto);
1734 /* advance to next line */
1735 while (*res && *res++ != '\n');
1740 memset(ssid, 0, sizeof(ssid));
1741 memset(bssid, 0, sizeof(bssid));
1742 memset(cipher, 0, sizeof(cipher));
1745 *len = count * sizeof(struct iwinfo_scanlist_entry);
1753 /* Got a temp interface, don't create yet another one */
1754 if (!strncmp(ifname, "tmp.", 4))
1756 if (!iwinfo_ifup(ifname))
1759 nl80211_get_scanlist_nl(ifname, buf, len);
1760 iwinfo_ifdown(ifname);
1764 /* Spawn a new scan interface */
1767 if (!(res = nl80211_ifadd(ifname)))
1770 if (!iwinfo_ifmac(res))
1773 /* if we can take the new interface up, the driver supports an
1774 * additional interface and there's no need to tear down the ap */
1775 if (iwinfo_ifup(res))
1777 nl80211_get_scanlist_nl(res, buf, len);
1781 /* driver cannot create secondary interface, take down ap
1783 else if (iwinfo_ifdown(ifname) && iwinfo_ifup(res))
1785 nl80211_get_scanlist_nl(res, buf, len);
1787 iwinfo_ifup(ifname);
1788 nl80211_hostapd_hup(ifname);
1800 static int nl80211_get_freqlist_cb(struct nl_msg *msg, void *arg)
1802 int bands_remain, freqs_remain;
1804 struct nl80211_array_buf *arr = arg;
1805 struct iwinfo_freqlist_entry *e = arr->buf;
1807 struct nlattr **attr = nl80211_parse(msg);
1808 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
1809 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
1810 struct nlattr *band, *freq;
1812 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1813 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1814 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1815 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1816 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1817 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1818 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1821 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
1823 nla_parse(bands, NL80211_BAND_ATTR_MAX,
1824 nla_data(band), nla_len(band), NULL);
1826 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
1828 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
1829 nla_data(freq), nla_len(freq), NULL);
1831 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ] ||
1832 freqs[NL80211_FREQUENCY_ATTR_DISABLED])
1835 e->mhz = nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]);
1836 e->channel = nl80211_freq2channel(e->mhz);
1839 freqs[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] ||
1840 freqs[NL80211_FREQUENCY_ATTR_NO_IBSS] ||
1841 freqs[NL80211_FREQUENCY_ATTR_RADAR]
1852 int nl80211_get_freqlist(const char *ifname, char *buf, int *len)
1854 struct nl80211_msg_conveyor *req;
1855 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
1857 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
1860 nl80211_send(req, nl80211_get_freqlist_cb, &arr);
1866 *len = arr.count * sizeof(struct iwinfo_freqlist_entry);
1873 static int nl80211_get_country_cb(struct nl_msg *msg, void *arg)
1876 struct nlattr **attr = nl80211_parse(msg);
1878 if (attr[NL80211_ATTR_REG_ALPHA2])
1879 memcpy(buf, nla_data(attr[NL80211_ATTR_REG_ALPHA2]), 2);
1886 int nl80211_get_country(const char *ifname, char *buf)
1889 struct nl80211_msg_conveyor *req;
1891 req = nl80211_msg(ifname, NL80211_CMD_GET_REG, 0);
1894 nl80211_send(req, nl80211_get_country_cb, buf);
1904 int nl80211_get_countrylist(const char *ifname, char *buf, int *len)
1907 struct iwinfo_country_entry *e = (struct iwinfo_country_entry *)buf;
1908 const struct iwinfo_iso3166_label *l;
1910 for (l = IWINFO_ISO3166_NAMES, count = 0; l->iso3166; l++, e++, count++)
1912 e->iso3166 = l->iso3166;
1913 e->ccode[0] = (l->iso3166 / 256);
1914 e->ccode[1] = (l->iso3166 % 256);
1917 *len = (count * sizeof(struct iwinfo_country_entry));
1921 static int nl80211_get_hwmodelist_cb(struct nl_msg *msg, void *arg)
1924 int bands_remain, freqs_remain;
1926 struct nlattr **attr = nl80211_parse(msg);
1927 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
1928 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
1929 struct nlattr *band, *freq;
1933 if (attr[NL80211_ATTR_WIPHY_BANDS])
1935 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
1937 nla_parse(bands, NL80211_BAND_ATTR_MAX,
1938 nla_data(band), nla_len(band), NULL);
1940 if (bands[NL80211_BAND_ATTR_HT_CAPA])
1941 caps = nla_get_u16(bands[NL80211_BAND_ATTR_HT_CAPA]);
1943 /* Treat any nonzero capability as 11n */
1945 *modes |= IWINFO_80211_N;
1947 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS],
1950 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
1951 nla_data(freq), nla_len(freq), NULL);
1953 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ])
1956 if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) < 2485)
1958 *modes |= IWINFO_80211_B;
1959 *modes |= IWINFO_80211_G;
1963 *modes |= IWINFO_80211_A;
1972 int nl80211_get_hwmodelist(const char *ifname, int *buf)
1974 struct nl80211_msg_conveyor *req;
1976 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
1979 nl80211_send(req, nl80211_get_hwmodelist_cb, buf);
1983 return *buf ? 0 : -1;
1986 int nl80211_get_mbssid_support(const char *ifname, int *buf)
1988 /* Test whether we can create another interface */
1989 char *nif = nl80211_ifadd(ifname);
1993 *buf = (iwinfo_ifmac(nif) && iwinfo_ifup(nif));
2004 int nl80211_get_hardware_id(const char *ifname, char *buf)
2009 /* Got a radioX pseudo interface, find some interface on it or create one */
2010 if (!strncmp(ifname, "radio", 5))
2012 /* Reuse existing interface */
2013 if ((res = nl80211_phy2ifname(ifname)) != NULL)
2015 rv = wext_get_hardware_id(res, buf);
2018 /* Need to spawn a temporary iface for finding IDs */
2019 else if ((res = nl80211_ifadd(ifname)) != NULL)
2021 rv = wext_get_hardware_id(res, buf);
2027 rv = wext_get_hardware_id(ifname, buf);
2030 /* Failed to obtain hardware IDs, search board config */
2033 rv = iwinfo_hardware_id_from_mtd((struct iwinfo_hardware_id *)buf);
2039 static const struct iwinfo_hardware_entry *
2040 nl80211_get_hardware_entry(const char *ifname)
2042 struct iwinfo_hardware_id id;
2044 if (nl80211_get_hardware_id(ifname, (char *)&id))
2047 return iwinfo_hardware(&id);
2050 int nl80211_get_hardware_name(const char *ifname, char *buf)
2052 const struct iwinfo_hardware_entry *hw;
2054 if (!(hw = nl80211_get_hardware_entry(ifname)))
2055 sprintf(buf, "Generic MAC80211");
2057 sprintf(buf, "%s %s", hw->vendor_name, hw->device_name);
2062 int nl80211_get_txpower_offset(const char *ifname, int *buf)
2064 const struct iwinfo_hardware_entry *hw;
2066 if (!(hw = nl80211_get_hardware_entry(ifname)))
2069 *buf = hw->txpower_offset;
2073 int nl80211_get_frequency_offset(const char *ifname, int *buf)
2075 const struct iwinfo_hardware_entry *hw;
2077 if (!(hw = nl80211_get_hardware_entry(ifname)))
2080 *buf = hw->frequency_offset;