2 * iwinfo - Wireless Information Library - NL80211 Backend
4 * Copyright (C) 2010-2013 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.
30 #include "iwinfo_nl80211.h"
32 #define min(x, y) ((x) < (y)) ? (x) : (y)
34 #define BIT(x) (1ULL<<(x))
36 static struct nl80211_state *nls = NULL;
38 static void nl80211_close(void)
43 genl_family_put(nls->nlctrl);
46 genl_family_put(nls->nl80211);
49 nl_socket_free(nls->nl_sock);
52 nl_cache_free(nls->nl_cache);
59 static int nl80211_init(void)
65 nls = malloc(sizeof(struct nl80211_state));
71 memset(nls, 0, sizeof(*nls));
73 nls->nl_sock = nl_socket_alloc();
79 if (genl_connect(nls->nl_sock)) {
84 fd = nl_socket_get_fd(nls->nl_sock);
85 if (fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC) < 0) {
90 if (genl_ctrl_alloc_cache(nls->nl_sock, &nls->nl_cache)) {
95 nls->nl80211 = genl_ctrl_search_by_name(nls->nl_cache, "nl80211");
101 nls->nlctrl = genl_ctrl_search_by_name(nls->nl_cache, "nlctrl");
116 static int nl80211_readint(const char *path)
122 if ((fd = open(path, O_RDONLY)) > -1)
124 if (read(fd, buffer, sizeof(buffer)) > 0)
133 static int nl80211_readstr(const char *path, char *buffer, int length)
138 if ((fd = open(path, O_RDONLY)) > -1)
140 if ((rv = read(fd, buffer, length - 1)) > 0)
142 if (buffer[rv - 1] == '\n')
155 static int nl80211_msg_error(struct sockaddr_nl *nla,
156 struct nlmsgerr *err, void *arg)
163 static int nl80211_msg_finish(struct nl_msg *msg, void *arg)
170 static int nl80211_msg_ack(struct nl_msg *msg, void *arg)
177 static int nl80211_msg_response(struct nl_msg *msg, void *arg)
182 static void nl80211_free(struct nl80211_msg_conveyor *cv)
197 static struct nl80211_msg_conveyor * nl80211_new(struct genl_family *family,
200 static struct nl80211_msg_conveyor cv;
202 struct nl_msg *req = NULL;
203 struct nl_cb *cb = NULL;
209 cb = nl_cb_alloc(NL_CB_DEFAULT);
213 genlmsg_put(req, 0, 0, genl_family_get_id(family), 0, flags, cmd, 0);
227 static struct nl80211_msg_conveyor * nl80211_ctl(int cmd, int flags)
229 if (nl80211_init() < 0)
232 return nl80211_new(nls->nlctrl, cmd, flags);
235 static int nl80211_phy_idx_from_uci_path(struct uci_section *s)
242 opt = uci_lookup_option_string(uci_ctx, s, "path");
246 snprintf(buf, sizeof(buf), "/sys/devices/%s/ieee80211/*/index", opt); /**/
247 if (glob(buf, 0, NULL, &gl))
251 idx = nl80211_readint(gl.gl_pathv[0]);
258 static int nl80211_phy_idx_from_uci_macaddr(struct uci_section *s)
265 opt = uci_lookup_option_string(uci_ctx, s, "macaddr");
269 snprintf(buf, sizeof(buf), "/sys/class/ieee80211/*"); /**/
270 if (glob(buf, 0, NULL, &gl))
273 for (i = 0; i < gl.gl_pathc; i++)
275 snprintf(buf, sizeof(buf), "%s/macaddress", gl.gl_pathv[i]);
276 if (nl80211_readstr(buf, buf, sizeof(buf)) <= 0)
279 if (fnmatch(opt, buf, FNM_CASEFOLD))
282 snprintf(buf, sizeof(buf), "%s/index", gl.gl_pathv[i]);
283 if ((idx = nl80211_readint(buf)) > -1)
292 static int nl80211_phy_idx_from_uci_phy(struct uci_section *s)
297 opt = uci_lookup_option_string(uci_ctx, s, "phy");
301 snprintf(buf, sizeof(buf), "/sys/class/ieee80211/%s/index", opt);
302 return nl80211_readint(buf);
305 static int nl80211_phy_idx_from_uci(const char *name)
307 struct uci_section *s;
310 s = iwinfo_uci_get_radio(name, "mac80211");
314 idx = nl80211_phy_idx_from_uci_path(s);
317 idx = nl80211_phy_idx_from_uci_macaddr(s);
320 idx = nl80211_phy_idx_from_uci_phy(s);
327 static struct nl80211_msg_conveyor * nl80211_msg(const char *ifname,
330 int ifidx = -1, phyidx = -1;
331 struct nl80211_msg_conveyor *cv;
336 if (nl80211_init() < 0)
339 if (!strncmp(ifname, "phy", 3))
340 phyidx = atoi(&ifname[3]);
341 else if (!strncmp(ifname, "radio", 5))
342 phyidx = nl80211_phy_idx_from_uci(ifname);
343 else if (!strncmp(ifname, "mon.", 4))
344 ifidx = if_nametoindex(&ifname[4]);
346 ifidx = if_nametoindex(ifname);
348 /* Valid ifidx must be greater than 0 */
349 if ((ifidx <= 0) && (phyidx < 0))
352 cv = nl80211_new(nls->nl80211, cmd, flags);
357 NLA_PUT_U32(cv->msg, NL80211_ATTR_IFINDEX, ifidx);
360 NLA_PUT_U32(cv->msg, NL80211_ATTR_WIPHY, phyidx);
369 static struct nl80211_msg_conveyor * nl80211_send(
370 struct nl80211_msg_conveyor *cv,
371 int (*cb_func)(struct nl_msg *, void *), void *cb_arg
373 static struct nl80211_msg_conveyor rcv;
377 nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, cb_func, cb_arg);
379 nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, nl80211_msg_response, &rcv);
381 if (nl_send_auto_complete(nls->nl_sock, cv->msg) < 0)
384 nl_cb_err(cv->cb, NL_CB_CUSTOM, nl80211_msg_error, &err);
385 nl_cb_set(cv->cb, NL_CB_FINISH, NL_CB_CUSTOM, nl80211_msg_finish, &err);
386 nl_cb_set(cv->cb, NL_CB_ACK, NL_CB_CUSTOM, nl80211_msg_ack, &err);
389 nl_recvmsgs(nls->nl_sock, cv->cb);
400 static struct nlattr ** nl80211_parse(struct nl_msg *msg)
402 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
403 static struct nlattr *attr[NL80211_ATTR_MAX + 1];
405 nla_parse(attr, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
406 genlmsg_attrlen(gnlh, 0), NULL);
412 static int nl80211_subscribe_cb(struct nl_msg *msg, void *arg)
414 struct nl80211_group_conveyor *cv = arg;
416 struct nlattr **attr = nl80211_parse(msg);
417 struct nlattr *mgrpinfo[CTRL_ATTR_MCAST_GRP_MAX + 1];
421 if (!attr[CTRL_ATTR_MCAST_GROUPS])
424 nla_for_each_nested(mgrp, attr[CTRL_ATTR_MCAST_GROUPS], mgrpidx)
426 nla_parse(mgrpinfo, CTRL_ATTR_MCAST_GRP_MAX,
427 nla_data(mgrp), nla_len(mgrp), NULL);
429 if (mgrpinfo[CTRL_ATTR_MCAST_GRP_ID] &&
430 mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME] &&
431 !strncmp(nla_data(mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME]),
432 cv->name, nla_len(mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME])))
434 cv->id = nla_get_u32(mgrpinfo[CTRL_ATTR_MCAST_GRP_ID]);
442 static int nl80211_subscribe(const char *family, const char *group)
444 struct nl80211_group_conveyor cv = { .name = group, .id = -ENOENT };
445 struct nl80211_msg_conveyor *req;
447 req = nl80211_ctl(CTRL_CMD_GETFAMILY, 0);
450 NLA_PUT_STRING(req->msg, CTRL_ATTR_FAMILY_NAME, family);
451 nl80211_send(req, nl80211_subscribe_cb, &cv);
457 return nl_socket_add_membership(nls->nl_sock, cv.id);
461 static int nl80211_wait_cb(struct nl_msg *msg, void *arg)
463 struct nl80211_event_conveyor *cv = arg;
464 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
466 if (gnlh->cmd == cv->wait)
467 cv->recv = gnlh->cmd;
472 static int nl80211_wait_seq_check(struct nl_msg *msg, void *arg)
477 static int nl80211_wait(const char *family, const char *group, int cmd)
479 struct nl80211_event_conveyor cv = { .wait = cmd };
482 if (nl80211_subscribe(family, group))
485 cb = nl_cb_alloc(NL_CB_DEFAULT);
490 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, nl80211_wait_seq_check, NULL);
491 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, nl80211_wait_cb, &cv );
494 nl_recvmsgs(nls->nl_sock, cb);
502 static int nl80211_freq2channel(int freq)
506 else if (freq < 2484)
507 return (freq - 2407) / 5;
508 else if (freq >= 4910 && freq <= 4980)
509 return (freq - 4000) / 5;
511 return (freq - 5000) / 5;
514 static int nl80211_channel2freq(int channel, const char *band)
516 if (!band || band[0] != 'a')
520 else if (channel < 14)
521 return (channel * 5) + 2407;
525 if (channel >= 182 && channel <= 196)
526 return (channel * 5) + 4000;
528 return (channel * 5) + 5000;
534 static int nl80211_ifname2phy_cb(struct nl_msg *msg, void *arg)
537 struct nlattr **attr = nl80211_parse(msg);
539 if (attr[NL80211_ATTR_WIPHY_NAME])
540 memcpy(buf, nla_data(attr[NL80211_ATTR_WIPHY_NAME]),
541 nla_len(attr[NL80211_ATTR_WIPHY_NAME]));
548 static char * nl80211_ifname2phy(const char *ifname)
550 static char phy[32] = { 0 };
551 struct nl80211_msg_conveyor *req;
553 memset(phy, 0, sizeof(phy));
555 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
558 nl80211_send(req, nl80211_ifname2phy_cb, phy);
562 return phy[0] ? phy : NULL;
565 static char * nl80211_phy2ifname(const char *ifname)
567 int ifidx = -1, cifidx = -1, phyidx = -1;
569 static char nif[IFNAMSIZ] = { 0 };
574 /* Only accept phy name of the form phy%d or radio%d */
577 else if (!strncmp(ifname, "phy", 3))
578 phyidx = atoi(&ifname[3]);
579 else if (!strncmp(ifname, "radio", 5))
580 phyidx = nl80211_phy_idx_from_uci(ifname);
584 memset(nif, 0, sizeof(nif));
588 if ((d = opendir("/sys/class/net")) != NULL)
590 while ((e = readdir(d)) != NULL)
592 snprintf(buffer, sizeof(buffer),
593 "/sys/class/net/%s/phy80211/index", e->d_name);
595 if (nl80211_readint(buffer) == phyidx)
597 snprintf(buffer, sizeof(buffer),
598 "/sys/class/net/%s/ifindex", e->d_name);
600 if ((cifidx = nl80211_readint(buffer)) >= 0 &&
601 ((ifidx < 0) || (cifidx < ifidx)))
604 strncpy(nif, e->d_name, sizeof(nif) - 1);
613 return nif[0] ? nif : NULL;
616 static int nl80211_get_mode_cb(struct nl_msg *msg, void *arg)
619 struct nlattr **tb = nl80211_parse(msg);
620 const int ifmodes[NL80211_IFTYPE_MAX + 1] = {
621 IWINFO_OPMODE_UNKNOWN, /* unspecified */
622 IWINFO_OPMODE_ADHOC, /* IBSS */
623 IWINFO_OPMODE_CLIENT, /* managed */
624 IWINFO_OPMODE_MASTER, /* AP */
625 IWINFO_OPMODE_AP_VLAN, /* AP/VLAN */
626 IWINFO_OPMODE_WDS, /* WDS */
627 IWINFO_OPMODE_MONITOR, /* monitor */
628 IWINFO_OPMODE_MESHPOINT, /* mesh point */
629 IWINFO_OPMODE_P2P_CLIENT, /* P2P-client */
630 IWINFO_OPMODE_P2P_GO, /* P2P-GO */
633 if (tb[NL80211_ATTR_IFTYPE])
634 *mode = ifmodes[nla_get_u32(tb[NL80211_ATTR_IFTYPE])];
640 static int nl80211_get_mode(const char *ifname, int *buf)
643 struct nl80211_msg_conveyor *req;
645 res = nl80211_phy2ifname(ifname);
646 req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0);
647 *buf = IWINFO_OPMODE_UNKNOWN;
651 nl80211_send(req, nl80211_get_mode_cb, buf);
655 return (*buf == IWINFO_OPMODE_UNKNOWN) ? -1 : 0;
658 static int __nl80211_hostapd_query(const char *ifname, ...)
661 char *phy, *search, *dest, *key, *val, buf[128];
662 int len, mode, found = 0, match = 1;
665 if (nl80211_get_mode(ifname, &mode))
668 if (mode != IWINFO_OPMODE_MASTER && mode != IWINFO_OPMODE_AP_VLAN)
671 phy = nl80211_ifname2phy(ifname);
676 snprintf(buf, sizeof(buf), "/var/run/hostapd-%s.conf", phy);
677 fp = fopen(buf, "r");
682 va_start(ap, ifname);
684 /* clear all destination buffers */
687 while ((search = va_arg(ap_cur, char *)) != NULL)
689 dest = va_arg(ap_cur, char *);
690 len = va_arg(ap_cur, int);
692 memset(dest, 0, len);
697 /* iterate applicable lines and copy found values into dest buffers */
698 while (fgets(buf, sizeof(buf), fp))
700 key = strtok(buf, " =\t\n");
701 val = strtok(NULL, "\n");
703 if (!key || !val || !*key || *key == '#')
706 if (!strcmp(key, "interface") || !strcmp(key, "bss"))
707 match = !strcmp(ifname, val);
714 while ((search = va_arg(ap_cur, char *)) != NULL)
716 dest = va_arg(ap_cur, char *);
717 len = va_arg(ap_cur, int);
719 if (!strcmp(search, key))
721 strncpy(dest, val, len - 1);
737 #define nl80211_hostapd_query(ifname, ...) \
738 __nl80211_hostapd_query(ifname, ##__VA_ARGS__, NULL)
741 static inline int nl80211_wpactl_recv(int sock, char *buf, int blen)
744 struct timeval tv = { 0, 256000 };
749 memset(buf, 0, blen);
751 if (select(sock + 1, &rfds, NULL, NULL, &tv) < 0)
754 if (!FD_ISSET(sock, &rfds))
757 return recv(sock, buf, blen - 1, 0);
760 static int nl80211_wpactl_connect(const char *ifname, struct sockaddr_un *local)
762 struct sockaddr_un remote = { 0 };
763 size_t remote_length, local_length;
765 int sock = socket(PF_UNIX, SOCK_DGRAM, 0);
769 remote.sun_family = AF_UNIX;
770 remote_length = sizeof(remote.sun_family) +
771 sprintf(remote.sun_path, "/var/run/wpa_supplicant-%s/%s",
774 if (fcntl(sock, F_SETFD, fcntl(sock, F_GETFD) | FD_CLOEXEC) < 0)
780 if (connect(sock, (struct sockaddr *)&remote, remote_length))
782 remote_length = sizeof(remote.sun_family) +
783 sprintf(remote.sun_path, "/var/run/wpa_supplicant/%s", ifname);
785 if (connect(sock, (struct sockaddr *)&remote, remote_length))
792 local->sun_family = AF_UNIX;
793 local_length = sizeof(local->sun_family) +
794 sprintf(local->sun_path, "/var/run/iwinfo-%s-%d", ifname, getpid());
796 if (bind(sock, (struct sockaddr *)local, local_length) < 0)
805 static int __nl80211_wpactl_query(const char *ifname, ...)
808 struct sockaddr_un local = { 0 };
809 int len, mode, found = 0, sock = -1;
810 char *search, *dest, *key, *val, *line, *pos, buf[512];
812 if (nl80211_get_mode(ifname, &mode))
815 if (mode != IWINFO_OPMODE_CLIENT && mode != IWINFO_OPMODE_ADHOC)
818 sock = nl80211_wpactl_connect(ifname, &local);
823 va_start(ap, ifname);
825 /* clear all destination buffers */
828 while ((search = va_arg(ap_cur, char *)) != NULL)
830 dest = va_arg(ap_cur, char *);
831 len = va_arg(ap_cur, int);
833 memset(dest, 0, len);
838 send(sock, "STATUS", 6, 0);
842 if (nl80211_wpactl_recv(sock, buf, sizeof(buf)) <= 0)
848 for (line = strtok_r(buf, "\n", &pos);
850 line = strtok_r(NULL, "\n", &pos))
852 key = strtok(line, "=");
853 val = strtok(NULL, "\n");
860 while ((search = va_arg(ap_cur, char *)) != NULL)
862 dest = va_arg(ap_cur, char *);
863 len = va_arg(ap_cur, int);
865 if (!strcmp(search, key))
867 strncpy(dest, val, len - 1);
882 unlink(local.sun_path);
887 #define nl80211_wpactl_query(ifname, ...) \
888 __nl80211_wpactl_query(ifname, ##__VA_ARGS__, NULL)
891 static char * nl80211_ifadd(const char *ifname)
893 char *rv = NULL, path[PATH_MAX];
894 static char nif[IFNAMSIZ] = { 0 };
895 struct nl80211_msg_conveyor *req;
898 req = nl80211_msg(ifname, NL80211_CMD_NEW_INTERFACE, 0);
901 snprintf(nif, sizeof(nif), "tmp.%s", ifname);
903 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, nif);
904 NLA_PUT_U32(req->msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_STATION);
906 nl80211_send(req, NULL, NULL);
908 snprintf(path, sizeof(path) - 1,
909 "/proc/sys/net/ipv6/conf/%s/disable_ipv6", nif);
911 if ((sysfs = fopen(path, "w")) != NULL)
913 fwrite("0\n", 1, 2, sysfs);
926 static void nl80211_ifdel(const char *ifname)
928 struct nl80211_msg_conveyor *req;
930 req = nl80211_msg(ifname, NL80211_CMD_DEL_INTERFACE, 0);
933 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, ifname);
935 nl80211_send(req, NULL, NULL);
942 static void nl80211_hostapd_hup(const char *ifname)
946 char *phy = nl80211_ifname2phy(ifname);
950 snprintf(buf, sizeof(buf), "/var/run/wifi-%s.pid", phy);
951 if ((fd = open(buf, O_RDONLY)) >= 0)
953 if (read(fd, buf, sizeof(buf)) > 0)
965 static int nl80211_probe(const char *ifname)
967 return !!nl80211_ifname2phy(ifname);
970 struct nl80211_ssid_bssid {
972 unsigned char bssid[7];
975 static int nl80211_get_ssid_bssid_cb(struct nl_msg *msg, void *arg)
979 struct nl80211_ssid_bssid *sb = arg;
980 struct nlattr **tb = nl80211_parse(msg);
981 struct nlattr *bss[NL80211_BSS_MAX + 1];
983 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
984 [NL80211_BSS_INFORMATION_ELEMENTS] = { 0 },
985 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
988 if (!tb[NL80211_ATTR_BSS] ||
989 nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
991 !bss[NL80211_BSS_BSSID] ||
992 !bss[NL80211_BSS_STATUS] ||
993 !bss[NL80211_BSS_INFORMATION_ELEMENTS])
998 switch (nla_get_u32(bss[NL80211_BSS_STATUS]))
1000 case NL80211_BSS_STATUS_ASSOCIATED:
1001 case NL80211_BSS_STATUS_AUTHENTICATED:
1002 case NL80211_BSS_STATUS_IBSS_JOINED:
1006 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1007 ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1009 while (ielen >= 2 && ielen >= ie[1])
1013 memcpy(sb->ssid, ie + 2, min(ie[1], IWINFO_ESSID_MAX_SIZE));
1024 memcpy(sb->bssid + 1, nla_data(bss[NL80211_BSS_BSSID]), 6);
1033 static int nl80211_get_ssid(const char *ifname, char *buf)
1036 struct nl80211_msg_conveyor *req;
1037 struct nl80211_ssid_bssid sb;
1039 /* try to find ssid from scan dump results */
1040 res = nl80211_phy2ifname(ifname);
1041 req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
1043 sb.ssid = (unsigned char *)buf;
1048 nl80211_send(req, nl80211_get_ssid_bssid_cb, &sb);
1052 /* failed, try to find from hostapd info */
1054 nl80211_hostapd_query(ifname, "ssid", buf, IWINFO_ESSID_MAX_SIZE + 1);
1056 return (*buf == 0) ? -1 : 0;
1059 static int nl80211_get_bssid(const char *ifname, char *buf)
1061 char *res, bssid[sizeof("FF:FF:FF:FF:FF:FF\0")];
1062 struct nl80211_msg_conveyor *req;
1063 struct nl80211_ssid_bssid sb;
1065 /* try to find bssid from scan dump results */
1066 res = nl80211_phy2ifname(ifname);
1067 req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
1074 nl80211_send(req, nl80211_get_ssid_bssid_cb, &sb);
1078 /* failed, try to find mac from hostapd info */
1079 if ((sb.bssid[0] == 0) &&
1080 nl80211_hostapd_query(ifname, "bssid", bssid, sizeof(bssid)))
1083 sb.bssid[1] = strtol(&bssid[0], NULL, 16);
1084 sb.bssid[2] = strtol(&bssid[3], NULL, 16);
1085 sb.bssid[3] = strtol(&bssid[6], NULL, 16);
1086 sb.bssid[4] = strtol(&bssid[9], NULL, 16);
1087 sb.bssid[5] = strtol(&bssid[12], NULL, 16);
1088 sb.bssid[6] = strtol(&bssid[15], NULL, 16);
1093 sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
1094 sb.bssid[1], sb.bssid[2], sb.bssid[3],
1095 sb.bssid[4], sb.bssid[5], sb.bssid[6]);
1104 static int nl80211_get_frequency_scan_cb(struct nl_msg *msg, void *arg)
1107 struct nlattr **attr = nl80211_parse(msg);
1108 struct nlattr *binfo[NL80211_BSS_MAX + 1];
1110 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1111 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1112 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1115 if (attr[NL80211_ATTR_BSS] &&
1116 !nla_parse_nested(binfo, NL80211_BSS_MAX,
1117 attr[NL80211_ATTR_BSS], bss_policy))
1119 if (binfo[NL80211_BSS_STATUS] && binfo[NL80211_BSS_FREQUENCY])
1120 *freq = nla_get_u32(binfo[NL80211_BSS_FREQUENCY]);
1126 static int nl80211_get_frequency_info_cb(struct nl_msg *msg, void *arg)
1129 struct nlattr **tb = nl80211_parse(msg);
1131 if (tb[NL80211_ATTR_WIPHY_FREQ])
1132 *freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
1137 static int nl80211_get_frequency(const char *ifname, int *buf)
1139 char *res, channel[4], hwmode[2];
1140 struct nl80211_msg_conveyor *req;
1142 /* try to find frequency from interface info */
1143 res = nl80211_phy2ifname(ifname);
1144 req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0);
1149 nl80211_send(req, nl80211_get_frequency_info_cb, buf);
1153 /* failed, try to find frequency from hostapd info */
1155 nl80211_hostapd_query(ifname, "hw_mode", hwmode, sizeof(hwmode),
1156 "channel", channel, sizeof(channel)) == 2)
1158 *buf = nl80211_channel2freq(atoi(channel), hwmode);
1161 /* failed, try to find frequency from scan results */
1164 res = nl80211_phy2ifname(ifname);
1165 req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
1169 nl80211_send(req, nl80211_get_frequency_scan_cb, buf);
1174 return (*buf == 0) ? -1 : 0;
1177 static int nl80211_get_channel(const char *ifname, int *buf)
1179 if (!nl80211_get_frequency(ifname, buf))
1181 *buf = nl80211_freq2channel(*buf);
1188 static int nl80211_get_txpower_cb(struct nl_msg *msg, void *arg)
1191 struct nlattr **tb = nl80211_parse(msg);
1193 if (tb[NL80211_ATTR_WIPHY_TX_POWER_LEVEL])
1194 *buf = iwinfo_mbm2dbm(nla_get_u32(tb[NL80211_ATTR_WIPHY_TX_POWER_LEVEL]));
1199 static int nl80211_get_txpower(const char *ifname, int *buf)
1202 struct nl80211_msg_conveyor *req;
1204 res = nl80211_phy2ifname(ifname);
1205 req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0);
1210 nl80211_send(req, nl80211_get_txpower_cb, buf);
1220 static int nl80211_fill_signal_cb(struct nl_msg *msg, void *arg)
1224 struct nl80211_rssi_rate *rr = arg;
1225 struct nlattr **attr = nl80211_parse(msg);
1226 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1227 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1229 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
1230 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
1231 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
1232 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
1233 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
1234 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
1235 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1236 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
1237 [NL80211_STA_INFO_LLID] = { .type = NLA_U16 },
1238 [NL80211_STA_INFO_PLID] = { .type = NLA_U16 },
1239 [NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 },
1242 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1243 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1244 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1245 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1246 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1249 if (attr[NL80211_ATTR_STA_INFO])
1251 if (!nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1252 attr[NL80211_ATTR_STA_INFO], stats_policy))
1254 if (sinfo[NL80211_STA_INFO_SIGNAL])
1256 dbm = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1257 rr->rssi = rr->rssi ? (int8_t)((rr->rssi + dbm) / 2) : dbm;
1260 if (sinfo[NL80211_STA_INFO_TX_BITRATE])
1262 if (!nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1263 sinfo[NL80211_STA_INFO_TX_BITRATE],
1266 if (rinfo[NL80211_RATE_INFO_BITRATE])
1268 mbit = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]);
1270 ? (int16_t)((rr->rate + mbit) / 2) : mbit;
1280 static void nl80211_fill_signal(const char *ifname, struct nl80211_rssi_rate *r)
1284 struct nl80211_msg_conveyor *req;
1289 if ((d = opendir("/sys/class/net")) != NULL)
1291 while ((de = readdir(d)) != NULL)
1293 if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
1294 (!de->d_name[strlen(ifname)] ||
1295 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
1297 req = nl80211_msg(de->d_name, NL80211_CMD_GET_STATION,
1302 nl80211_send(req, nl80211_fill_signal_cb, r);
1312 static int nl80211_get_bitrate(const char *ifname, int *buf)
1314 struct nl80211_rssi_rate rr;
1316 nl80211_fill_signal(ifname, &rr);
1320 *buf = (rr.rate * 100);
1327 static int nl80211_get_signal(const char *ifname, int *buf)
1329 struct nl80211_rssi_rate rr;
1331 nl80211_fill_signal(ifname, &rr);
1342 static int nl80211_get_noise_cb(struct nl_msg *msg, void *arg)
1344 int8_t *noise = arg;
1345 struct nlattr **tb = nl80211_parse(msg);
1346 struct nlattr *si[NL80211_SURVEY_INFO_MAX + 1];
1348 static struct nla_policy sp[NL80211_SURVEY_INFO_MAX + 1] = {
1349 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1350 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1353 if (!tb[NL80211_ATTR_SURVEY_INFO])
1356 if (nla_parse_nested(si, NL80211_SURVEY_INFO_MAX,
1357 tb[NL80211_ATTR_SURVEY_INFO], sp))
1360 if (!si[NL80211_SURVEY_INFO_NOISE])
1363 if (!*noise || si[NL80211_SURVEY_INFO_IN_USE])
1364 *noise = (int8_t)nla_get_u8(si[NL80211_SURVEY_INFO_NOISE]);
1370 static int nl80211_get_noise(const char *ifname, int *buf)
1373 struct nl80211_msg_conveyor *req;
1375 req = nl80211_msg(ifname, NL80211_CMD_GET_SURVEY, NLM_F_DUMP);
1380 nl80211_send(req, nl80211_get_noise_cb, &noise);
1393 static int nl80211_get_quality(const char *ifname, int *buf)
1397 if (!nl80211_get_signal(ifname, &signal))
1399 /* A positive signal level is usually just a quality
1400 * value, pass through as-is */
1406 /* The cfg80211 wext compat layer assumes a signal range
1407 * of -110 dBm to -40 dBm, the quality value is derived
1408 * by adding 110 to the signal level */
1413 else if (signal > -40)
1416 *buf = (signal + 110);
1425 static int nl80211_get_quality_max(const char *ifname, int *buf)
1427 /* The cfg80211 wext compat layer assumes a maximum
1434 static int nl80211_check_wepkey(const char *key)
1438 switch (strlen(key))
1442 return IWINFO_CIPHER_WEP40;
1446 return IWINFO_CIPHER_WEP104;
1453 static int nl80211_get_encryption(const char *ifname, char *buf)
1455 char wpa[2], wpa_key_mgmt[16], wpa_pairwise[16], wpa_groupwise[16];
1456 char auth_algs[2], wep_key0[27], wep_key1[27], wep_key2[27], wep_key3[27];
1458 struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf;
1460 /* WPA supplicant */
1461 if (nl80211_wpactl_query(ifname,
1462 "pairwise_cipher", wpa_pairwise, sizeof(wpa_pairwise),
1463 "group_cipher", wpa_groupwise, sizeof(wpa_groupwise),
1464 "key_mgmt", wpa_key_mgmt, sizeof(wpa_key_mgmt)))
1467 if (!strcmp(wpa_key_mgmt, "NONE"))
1469 if (strstr(wpa_pairwise, "WEP-40"))
1470 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1471 else if (strstr(wpa_pairwise, "WEP-104"))
1472 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1474 if (strstr(wpa_groupwise, "WEP-40"))
1475 c->group_ciphers |= IWINFO_CIPHER_WEP40;
1476 else if (strstr(wpa_groupwise, "WEP-104"))
1477 c->group_ciphers |= IWINFO_CIPHER_WEP104;
1479 c->enabled = !!(c->pair_ciphers | c->group_ciphers);
1480 c->auth_suites |= IWINFO_KMGMT_NONE;
1481 c->auth_algs |= IWINFO_AUTH_OPEN; /* XXX: assumption */
1485 else if (strstr(wpa_key_mgmt, "WPA"))
1487 if (strstr(wpa_pairwise, "TKIP"))
1488 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1489 else if (strstr(wpa_pairwise, "CCMP"))
1490 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1491 else if (strstr(wpa_pairwise, "NONE"))
1492 c->pair_ciphers |= IWINFO_CIPHER_NONE;
1493 else if (strstr(wpa_pairwise, "WEP-40"))
1494 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1495 else if (strstr(wpa_pairwise, "WEP-104"))
1496 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1498 if (strstr(wpa_groupwise, "TKIP"))
1499 c->group_ciphers |= IWINFO_CIPHER_TKIP;
1500 else if (strstr(wpa_groupwise, "CCMP"))
1501 c->group_ciphers |= IWINFO_CIPHER_CCMP;
1502 else if (strstr(wpa_groupwise, "NONE"))
1503 c->group_ciphers |= IWINFO_CIPHER_NONE;
1504 else if (strstr(wpa_groupwise, "WEP-40"))
1505 c->group_ciphers |= IWINFO_CIPHER_WEP40;
1506 else if (strstr(wpa_groupwise, "WEP-104"))
1507 c->group_ciphers |= IWINFO_CIPHER_WEP104;
1509 if (strstr(wpa_key_mgmt, "WPA2"))
1511 else if (strstr(wpa_key_mgmt, "WPA"))
1514 if (strstr(wpa_key_mgmt, "PSK"))
1515 c->auth_suites |= IWINFO_KMGMT_PSK;
1516 else if (strstr(wpa_key_mgmt, "EAP") ||
1517 strstr(wpa_key_mgmt, "802.1X"))
1518 c->auth_suites |= IWINFO_KMGMT_8021x;
1519 else if (strstr(wpa_key_mgmt, "NONE"))
1520 c->auth_suites |= IWINFO_KMGMT_NONE;
1522 c->enabled = !!(c->wpa_version && c->auth_suites);
1529 else if (nl80211_hostapd_query(ifname,
1530 "wpa", wpa, sizeof(wpa),
1531 "wpa_key_mgmt", wpa_key_mgmt, sizeof(wpa_key_mgmt),
1532 "wpa_pairwise", wpa_pairwise, sizeof(wpa_pairwise),
1533 "auth_algs", auth_algs, sizeof(auth_algs),
1534 "wep_key0", wep_key0, sizeof(wep_key0),
1535 "wep_key1", wep_key1, sizeof(wep_key1),
1536 "wep_key2", wep_key2, sizeof(wep_key2),
1537 "wep_key3", wep_key3, sizeof(wep_key3)))
1539 c->wpa_version = wpa[0] ? atoi(wpa) : 0;
1541 if (wpa_key_mgmt[0])
1543 if (strstr(wpa_key_mgmt, "PSK"))
1544 c->auth_suites |= IWINFO_KMGMT_PSK;
1546 if (strstr(wpa_key_mgmt, "EAP"))
1547 c->auth_suites |= IWINFO_KMGMT_8021x;
1549 if (strstr(wpa_key_mgmt, "NONE"))
1550 c->auth_suites |= IWINFO_KMGMT_NONE;
1554 c->auth_suites |= IWINFO_KMGMT_PSK;
1557 if (wpa_pairwise[0])
1559 if (strstr(wpa_pairwise, "TKIP"))
1560 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1562 if (strstr(wpa_pairwise, "CCMP"))
1563 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1565 if (strstr(wpa_pairwise, "NONE"))
1566 c->pair_ciphers |= IWINFO_CIPHER_NONE;
1571 switch(atoi(auth_algs))
1574 c->auth_algs |= IWINFO_AUTH_OPEN;
1578 c->auth_algs |= IWINFO_AUTH_SHARED;
1582 c->auth_algs |= IWINFO_AUTH_OPEN;
1583 c->auth_algs |= IWINFO_AUTH_SHARED;
1587 c->pair_ciphers |= nl80211_check_wepkey(wep_key0);
1588 c->pair_ciphers |= nl80211_check_wepkey(wep_key1);
1589 c->pair_ciphers |= nl80211_check_wepkey(wep_key2);
1590 c->pair_ciphers |= nl80211_check_wepkey(wep_key3);
1593 c->group_ciphers = c->pair_ciphers;
1594 c->enabled = (c->wpa_version || c->pair_ciphers) ? 1 : 0;
1602 static int nl80211_get_phyname(const char *ifname, char *buf)
1606 name = nl80211_ifname2phy(ifname);
1613 else if ((name = nl80211_phy2ifname(ifname)) != NULL)
1615 name = nl80211_ifname2phy(name);
1619 strcpy(buf, ifname);
1628 static int nl80211_get_assoclist_cb(struct nl_msg *msg, void *arg)
1630 struct nl80211_array_buf *arr = arg;
1631 struct iwinfo_assoclist_entry *e = arr->buf;
1632 struct nlattr **attr = nl80211_parse(msg);
1633 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1634 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1635 struct nl80211_sta_flag_update *sta_flags;
1637 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
1638 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
1639 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
1640 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
1641 [NL80211_STA_INFO_RX_BITRATE] = { .type = NLA_NESTED },
1642 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
1643 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1644 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
1645 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
1646 [NL80211_STA_INFO_TX_RETRIES] = { .type = NLA_U32 },
1647 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
1648 [NL80211_STA_INFO_T_OFFSET] = { .type = NLA_U64 },
1649 [NL80211_STA_INFO_STA_FLAGS] =
1650 { .minlen = sizeof(struct nl80211_sta_flag_update) },
1653 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1654 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1655 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1656 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1657 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1660 /* advance to end of array */
1662 memset(e, 0, sizeof(*e));
1664 if (attr[NL80211_ATTR_MAC])
1665 memcpy(e->mac, nla_data(attr[NL80211_ATTR_MAC]), 6);
1667 if (attr[NL80211_ATTR_STA_INFO] &&
1668 !nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1669 attr[NL80211_ATTR_STA_INFO], stats_policy))
1671 if (sinfo[NL80211_STA_INFO_SIGNAL])
1672 e->signal = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1674 if (sinfo[NL80211_STA_INFO_INACTIVE_TIME])
1675 e->inactive = nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]);
1677 if (sinfo[NL80211_STA_INFO_RX_PACKETS])
1678 e->rx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS]);
1680 if (sinfo[NL80211_STA_INFO_TX_PACKETS])
1681 e->tx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS]);
1683 if (sinfo[NL80211_STA_INFO_RX_BITRATE] &&
1684 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1685 sinfo[NL80211_STA_INFO_RX_BITRATE], rate_policy))
1687 if (rinfo[NL80211_RATE_INFO_BITRATE])
1689 nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]) * 100;
1691 if (rinfo[NL80211_RATE_INFO_MCS])
1692 e->rx_rate.mcs = nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]);
1694 if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
1695 e->rx_rate.is_40mhz = 1;
1697 if (rinfo[NL80211_RATE_INFO_SHORT_GI])
1698 e->rx_rate.is_short_gi = 1;
1701 if (sinfo[NL80211_STA_INFO_TX_BITRATE] &&
1702 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1703 sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy))
1705 if (rinfo[NL80211_RATE_INFO_BITRATE])
1707 nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]) * 100;
1709 if (rinfo[NL80211_RATE_INFO_MCS])
1710 e->tx_rate.mcs = nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]);
1712 if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
1713 e->tx_rate.is_40mhz = 1;
1715 if (rinfo[NL80211_RATE_INFO_SHORT_GI])
1716 e->tx_rate.is_short_gi = 1;
1719 if (sinfo[NL80211_STA_INFO_RX_BYTES])
1720 e->rx_bytes = nla_get_u32(sinfo[NL80211_STA_INFO_RX_BYTES]);
1722 if (sinfo[NL80211_STA_INFO_TX_BYTES])
1723 e->tx_bytes = nla_get_u32(sinfo[NL80211_STA_INFO_TX_BYTES]);
1725 if (sinfo[NL80211_STA_INFO_TX_RETRIES])
1726 e->tx_retries = nla_get_u32(sinfo[NL80211_STA_INFO_TX_RETRIES]);
1728 if (sinfo[NL80211_STA_INFO_TX_FAILED])
1729 e->tx_failed = nla_get_u32(sinfo[NL80211_STA_INFO_TX_FAILED]);
1731 if (sinfo[NL80211_STA_INFO_T_OFFSET])
1732 e->t_offset = nla_get_u64(sinfo[NL80211_STA_INFO_T_OFFSET]);
1735 if (sinfo[NL80211_STA_INFO_STA_FLAGS])
1737 sta_flags = (struct nl80211_sta_flag_update *)
1738 nla_data(sinfo[NL80211_STA_INFO_STA_FLAGS]);
1740 if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
1741 sta_flags->set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1742 e->is_authorized = 1;
1744 if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1745 sta_flags->set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1746 e->is_authenticated = 1;
1748 if (sta_flags->mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) &&
1749 sta_flags->set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1750 e->is_preamble_short = 1;
1752 if (sta_flags->mask & BIT(NL80211_STA_FLAG_WME) &&
1753 sta_flags->set & BIT(NL80211_STA_FLAG_WME))
1756 if (sta_flags->mask & BIT(NL80211_STA_FLAG_MFP) &&
1757 sta_flags->set & BIT(NL80211_STA_FLAG_MFP))
1760 if (sta_flags->mask & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
1761 sta_flags->set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1766 e->noise = 0; /* filled in by caller */
1772 static int nl80211_get_assoclist(const char *ifname, char *buf, int *len)
1777 struct nl80211_msg_conveyor *req;
1778 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
1779 struct iwinfo_assoclist_entry *e;
1781 if ((d = opendir("/sys/class/net")) != NULL)
1783 while ((de = readdir(d)) != NULL)
1785 if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
1786 (!de->d_name[strlen(ifname)] ||
1787 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
1789 req = nl80211_msg(de->d_name, NL80211_CMD_GET_STATION,
1794 nl80211_send(req, nl80211_get_assoclist_cb, &arr);
1802 if (!nl80211_get_noise(ifname, &noise))
1803 for (i = 0, e = arr.buf; i < arr.count; i++, e++)
1806 *len = (arr.count * sizeof(struct iwinfo_assoclist_entry));
1813 static int nl80211_get_txpwrlist_cb(struct nl_msg *msg, void *arg)
1816 int ch_cur, ch_cmp, bands_remain, freqs_remain;
1818 struct nlattr **attr = nl80211_parse(msg);
1819 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
1820 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
1821 struct nlattr *band, *freq;
1823 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1824 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1825 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1826 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1827 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1828 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1829 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1832 ch_cur = *dbm_max; /* value int* is initialized with channel by caller */
1835 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
1837 nla_parse(bands, NL80211_BAND_ATTR_MAX, nla_data(band),
1838 nla_len(band), NULL);
1840 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
1842 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
1843 nla_data(freq), nla_len(freq), freq_policy);
1845 ch_cmp = nl80211_freq2channel(nla_get_u32(
1846 freqs[NL80211_FREQUENCY_ATTR_FREQ]));
1848 if ((!ch_cur || (ch_cmp == ch_cur)) &&
1849 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER])
1851 *dbm_max = (int)(0.01 * nla_get_u32(
1852 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]));
1862 static int nl80211_get_txpwrlist(const char *ifname, char *buf, int *len)
1865 int dbm_max = -1, dbm_cur, dbm_cnt;
1866 struct nl80211_msg_conveyor *req;
1867 struct iwinfo_txpwrlist_entry entry;
1869 if (nl80211_get_channel(ifname, &ch_cur))
1872 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
1875 /* initialize the value pointer with channel for callback */
1878 nl80211_send(req, nl80211_get_txpwrlist_cb, &dbm_max);
1884 for (dbm_cur = 0, dbm_cnt = 0;
1886 dbm_cur++, dbm_cnt++)
1888 entry.dbm = dbm_cur;
1889 entry.mw = iwinfo_dbm2mw(dbm_cur);
1891 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
1894 entry.dbm = dbm_max;
1895 entry.mw = iwinfo_dbm2mw(dbm_max);
1897 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
1900 *len = dbm_cnt * sizeof(entry);
1907 static void nl80211_get_scancrypto(const char *spec,
1908 struct iwinfo_crypto_entry *c)
1910 if (strstr(spec, "WPA") || strstr(spec, "WEP"))
1914 if (strstr(spec, "WPA2-") && strstr(spec, "WPA-"))
1917 else if (strstr(spec, "WPA2"))
1920 else if (strstr(spec, "WPA"))
1923 else if (strstr(spec, "WEP"))
1924 c->auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
1927 if (strstr(spec, "PSK"))
1928 c->auth_suites |= IWINFO_KMGMT_PSK;
1930 if (strstr(spec, "802.1X") || strstr(spec, "EAP"))
1931 c->auth_suites |= IWINFO_KMGMT_8021x;
1933 if (strstr(spec, "WPA-NONE"))
1934 c->auth_suites |= IWINFO_KMGMT_NONE;
1937 if (strstr(spec, "TKIP"))
1938 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1940 if (strstr(spec, "CCMP"))
1941 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1943 if (strstr(spec, "WEP-40"))
1944 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1946 if (strstr(spec, "WEP-104"))
1947 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1949 c->group_ciphers = c->pair_ciphers;
1958 struct nl80211_scanlist {
1959 struct iwinfo_scanlist_entry *e;
1964 static void nl80211_get_scanlist_ie(struct nlattr **bss,
1965 struct iwinfo_scanlist_entry *e)
1967 int ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1968 unsigned char *ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1969 static unsigned char ms_oui[3] = { 0x00, 0x50, 0xf2 };
1972 while (ielen >= 2 && ielen >= ie[1])
1977 len = min(ie[1], IWINFO_ESSID_MAX_SIZE);
1978 memcpy(e->ssid, ie + 2, len);
1983 iwinfo_parse_rsn(&e->crypto, ie + 2, ie[1],
1984 IWINFO_CIPHER_CCMP, IWINFO_KMGMT_8021x);
1987 case 221: /* Vendor */
1988 if (ie[1] >= 4 && !memcmp(ie + 2, ms_oui, 3) && ie[5] == 1)
1989 iwinfo_parse_rsn(&e->crypto, ie + 6, ie[1] - 4,
1990 IWINFO_CIPHER_TKIP, IWINFO_KMGMT_PSK);
1999 static int nl80211_get_scanlist_cb(struct nl_msg *msg, void *arg)
2004 struct nl80211_scanlist *sl = arg;
2005 struct nlattr **tb = nl80211_parse(msg);
2006 struct nlattr *bss[NL80211_BSS_MAX + 1];
2008 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2009 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2010 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2011 [NL80211_BSS_BSSID] = { 0 },
2012 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2013 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2014 [NL80211_BSS_INFORMATION_ELEMENTS] = { 0 },
2015 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2016 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2017 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2018 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2019 [NL80211_BSS_BEACON_IES] = { 0 },
2022 if (!tb[NL80211_ATTR_BSS] ||
2023 nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2025 !bss[NL80211_BSS_BSSID])
2030 if (bss[NL80211_BSS_CAPABILITY])
2031 caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2035 memset(sl->e, 0, sizeof(*sl->e));
2036 memcpy(sl->e->mac, nla_data(bss[NL80211_BSS_BSSID]), 6);
2039 sl->e->mode = IWINFO_OPMODE_ADHOC;
2040 else if (caps & (1<<0))
2041 sl->e->mode = IWINFO_OPMODE_MASTER;
2043 sl->e->mode = IWINFO_OPMODE_MESHPOINT;
2046 sl->e->crypto.enabled = 1;
2048 if (bss[NL80211_BSS_FREQUENCY])
2049 sl->e->channel = nl80211_freq2channel(nla_get_u32(
2050 bss[NL80211_BSS_FREQUENCY]));
2052 if (bss[NL80211_BSS_INFORMATION_ELEMENTS])
2053 nl80211_get_scanlist_ie(bss, sl->e);
2055 if (bss[NL80211_BSS_SIGNAL_MBM])
2058 (uint8_t)((int32_t)nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]) / 100);
2060 rssi = sl->e->signal - 0x100;
2064 else if (rssi > -40)
2067 sl->e->quality = (rssi + 110);
2068 sl->e->quality_max = 70;
2071 if (sl->e->crypto.enabled && !sl->e->crypto.wpa_version)
2073 sl->e->crypto.auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
2074 sl->e->crypto.pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
2083 static int nl80211_get_scanlist_nl(const char *ifname, char *buf, int *len)
2085 struct nl80211_msg_conveyor *req;
2086 struct nl80211_scanlist sl = { .e = (struct iwinfo_scanlist_entry *)buf };
2088 req = nl80211_msg(ifname, NL80211_CMD_TRIGGER_SCAN, 0);
2091 nl80211_send(req, NULL, NULL);
2095 nl80211_wait("nl80211", "scan", NL80211_CMD_NEW_SCAN_RESULTS);
2097 req = nl80211_msg(ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
2100 nl80211_send(req, nl80211_get_scanlist_cb, &sl);
2104 *len = sl.len * sizeof(struct iwinfo_scanlist_entry);
2105 return *len ? 0 : -1;
2108 static int wpasupp_ssid_decode(const char *in, char *out, int outlen)
2111 (((x) >= 'a') ? ((x) - 'a' + 10) : \
2112 (((x) >= 'A') ? ((x) - 'A' + 10) : ((x) - '0')))
2118 if (len + 1 >= outlen)
2128 out[len++] = '\n'; in++;
2132 out[len++] = '\r'; in++;
2136 out[len++] = '\t'; in++;
2140 out[len++] = '\033'; in++;
2144 if (isxdigit(*(in+1)) && isxdigit(*(in+2)))
2145 out[len++] = hex(*(in+1)) * 16 + hex(*(in+2));
2167 static int nl80211_get_scanlist_wpactl(const char *ifname, char *buf, int *len)
2169 int sock, qmax, rssi, tries, count = -1, ready = 0;
2170 char *pos, *line, *bssid, *freq, *signal, *flags, *ssid, reply[4096];
2171 struct sockaddr_un local = { 0 };
2172 struct iwinfo_scanlist_entry *e = (struct iwinfo_scanlist_entry *)buf;
2174 sock = nl80211_wpactl_connect(ifname, &local);
2179 send(sock, "ATTACH", 6, 0);
2180 send(sock, "SCAN", 4, 0);
2183 * wait for scan results:
2184 * nl80211_wpactl_recv() will use a timeout of 256ms and we need to scan
2185 * 72 channels at most. We'll also receive two "OK" messages acknowledging
2186 * the "ATTACH" and "SCAN" commands and the driver might need a bit extra
2187 * time to process the results, so try 72 + 2 + 1 times.
2189 for (tries = 0; tries < 75; tries++)
2191 if (nl80211_wpactl_recv(sock, reply, sizeof(reply)) <= 0)
2194 /* got an event notification */
2195 if (reply[0] == '<')
2197 /* scan results are ready */
2198 if (strstr(reply, "CTRL-EVENT-SCAN-RESULTS"))
2200 /* send "SCAN_RESULTS" command */
2201 ready = (send(sock, "SCAN_RESULTS", 12, 0) == 12);
2205 /* is another unrelated event, retry */
2210 /* receive and parse scan results if the wait above didn't time out */
2211 if (ready && nl80211_wpactl_recv(sock, reply, sizeof(reply)) > 0)
2213 nl80211_get_quality_max(ifname, &qmax);
2215 for (line = strtok_r(reply, "\n", &pos);
2217 line = strtok_r(NULL, "\n", &pos))
2219 /* skip header line */
2226 bssid = strtok(line, "\t");
2227 freq = strtok(NULL, "\t");
2228 signal = strtok(NULL, "\t");
2229 flags = strtok(NULL, "\t");
2230 ssid = strtok(NULL, "\n");
2232 if (!bssid || !freq || !signal || !flags || !ssid)
2236 e->mac[0] = strtol(&bssid[0], NULL, 16);
2237 e->mac[1] = strtol(&bssid[3], NULL, 16);
2238 e->mac[2] = strtol(&bssid[6], NULL, 16);
2239 e->mac[3] = strtol(&bssid[9], NULL, 16);
2240 e->mac[4] = strtol(&bssid[12], NULL, 16);
2241 e->mac[5] = strtol(&bssid[15], NULL, 16);
2244 wpasupp_ssid_decode(ssid, e->ssid, sizeof(e->ssid));
2247 if (strstr(flags, "[MESH]"))
2248 e->mode = IWINFO_OPMODE_MESHPOINT;
2249 else if (strstr(flags, "[IBSS]"))
2250 e->mode = IWINFO_OPMODE_ADHOC;
2252 e->mode = IWINFO_OPMODE_MASTER;
2255 e->channel = nl80211_freq2channel(atoi(freq));
2258 rssi = atoi(signal);
2264 /* The cfg80211 wext compat layer assumes a signal range
2265 * of -110 dBm to -40 dBm, the quality value is derived
2266 * by adding 110 to the signal level */
2269 else if (rssi > -40)
2272 e->quality = (rssi + 110);
2280 e->quality_max = qmax;
2283 nl80211_get_scancrypto(flags, &e->crypto);
2289 *len = count * sizeof(struct iwinfo_scanlist_entry);
2293 unlink(local.sun_path);
2295 return (count >= 0) ? 0 : -1;
2298 static int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
2305 /* Got a radioX pseudo interface, find some interface on it or create one */
2306 if (!strncmp(ifname, "radio", 5))
2308 /* Reuse existing interface */
2309 if ((res = nl80211_phy2ifname(ifname)) != NULL)
2311 return nl80211_get_scanlist(res, buf, len);
2314 /* Need to spawn a temporary iface for scanning */
2315 else if ((res = nl80211_ifadd(ifname)) != NULL)
2317 rv = nl80211_get_scanlist(res, buf, len);
2323 /* WPA supplicant */
2324 if (!nl80211_get_scanlist_wpactl(ifname, buf, len))
2329 /* station / ad-hoc / monitor scan */
2330 else if (!nl80211_get_mode(ifname, &mode) &&
2331 (mode == IWINFO_OPMODE_ADHOC ||
2332 mode == IWINFO_OPMODE_MASTER ||
2333 mode == IWINFO_OPMODE_CLIENT ||
2334 mode == IWINFO_OPMODE_MONITOR) &&
2335 iwinfo_ifup(ifname))
2337 return nl80211_get_scanlist_nl(ifname, buf, len);
2343 /* Got a temp interface, don't create yet another one */
2344 if (!strncmp(ifname, "tmp.", 4))
2346 if (!iwinfo_ifup(ifname))
2349 rv = nl80211_get_scanlist_nl(ifname, buf, len);
2350 iwinfo_ifdown(ifname);
2354 /* Spawn a new scan interface */
2357 if (!(res = nl80211_ifadd(ifname)))
2362 /* if we can take the new interface up, the driver supports an
2363 * additional interface and there's no need to tear down the ap */
2364 if (iwinfo_ifup(res))
2366 rv = nl80211_get_scanlist_nl(res, buf, len);
2370 /* driver cannot create secondary interface, take down ap
2372 else if (iwinfo_ifdown(ifname) && iwinfo_ifup(res))
2374 rv = nl80211_get_scanlist_nl(res, buf, len);
2376 iwinfo_ifup(ifname);
2377 nl80211_hostapd_hup(ifname);
2388 static int nl80211_get_freqlist_cb(struct nl_msg *msg, void *arg)
2390 int bands_remain, freqs_remain;
2392 struct nl80211_array_buf *arr = arg;
2393 struct iwinfo_freqlist_entry *e = arr->buf;
2395 struct nlattr **attr = nl80211_parse(msg);
2396 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
2397 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
2398 struct nlattr *band, *freq;
2400 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
2402 nla_parse(bands, NL80211_BAND_ATTR_MAX,
2403 nla_data(band), nla_len(band), NULL);
2405 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
2407 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
2408 nla_data(freq), nla_len(freq), NULL);
2410 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ] ||
2411 freqs[NL80211_FREQUENCY_ATTR_DISABLED])
2414 e->mhz = nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]);
2415 e->channel = nl80211_freq2channel(e->mhz);
2418 freqs[NL80211_FREQUENCY_ATTR_NO_IR] &&
2419 !freqs[NL80211_FREQUENCY_ATTR_RADAR]
2430 static int nl80211_get_freqlist(const char *ifname, char *buf, int *len)
2432 struct nl80211_msg_conveyor *req;
2433 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
2435 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
2438 nl80211_send(req, nl80211_get_freqlist_cb, &arr);
2444 *len = arr.count * sizeof(struct iwinfo_freqlist_entry);
2451 static int nl80211_get_country_cb(struct nl_msg *msg, void *arg)
2454 struct nlattr **attr = nl80211_parse(msg);
2456 if (attr[NL80211_ATTR_REG_ALPHA2])
2457 memcpy(buf, nla_data(attr[NL80211_ATTR_REG_ALPHA2]), 2);
2464 static int nl80211_get_country(const char *ifname, char *buf)
2467 struct nl80211_msg_conveyor *req;
2469 req = nl80211_msg(ifname, NL80211_CMD_GET_REG, 0);
2472 nl80211_send(req, nl80211_get_country_cb, buf);
2482 static int nl80211_get_countrylist(const char *ifname, char *buf, int *len)
2485 struct iwinfo_country_entry *e = (struct iwinfo_country_entry *)buf;
2486 const struct iwinfo_iso3166_label *l;
2488 for (l = IWINFO_ISO3166_NAMES, count = 0; l->iso3166; l++, e++, count++)
2490 e->iso3166 = l->iso3166;
2491 e->ccode[0] = (l->iso3166 / 256);
2492 e->ccode[1] = (l->iso3166 % 256);
2496 *len = (count * sizeof(struct iwinfo_country_entry));
2501 struct nl80211_modes
2508 static int nl80211_get_modelist_cb(struct nl_msg *msg, void *arg)
2510 struct nl80211_modes *m = arg;
2511 int bands_remain, freqs_remain;
2513 uint32_t vht_caps = 0;
2514 struct nlattr **attr = nl80211_parse(msg);
2515 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
2516 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
2517 struct nlattr *band, *freq;
2519 if (attr[NL80211_ATTR_WIPHY_BANDS])
2521 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
2523 nla_parse(bands, NL80211_BAND_ATTR_MAX,
2524 nla_data(band), nla_len(band), NULL);
2526 if (bands[NL80211_BAND_ATTR_HT_CAPA])
2527 caps = nla_get_u16(bands[NL80211_BAND_ATTR_HT_CAPA]);
2529 /* Treat any nonzero capability as 11n */
2532 m->hw |= IWINFO_80211_N;
2533 m->ht |= IWINFO_HTMODE_HT20;
2535 if (caps & (1 << 1))
2536 m->ht |= IWINFO_HTMODE_HT40;
2539 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS],
2542 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
2543 nla_data(freq), nla_len(freq), NULL);
2545 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ])
2548 if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) < 2485)
2550 m->hw |= IWINFO_80211_B;
2551 m->hw |= IWINFO_80211_G;
2553 else if (bands[NL80211_BAND_ATTR_VHT_CAPA])
2555 vht_caps = nla_get_u32(bands[NL80211_BAND_ATTR_VHT_CAPA]);
2557 /* Treat any nonzero capability as 11ac */
2560 m->hw |= IWINFO_80211_AC;
2561 m->ht |= IWINFO_HTMODE_VHT20 | IWINFO_HTMODE_VHT40 | IWINFO_HTMODE_VHT80;
2563 switch ((vht_caps >> 2) & 3)
2566 m->ht |= IWINFO_HTMODE_VHT80_80;
2570 m->ht |= IWINFO_HTMODE_VHT160;
2574 else if (!(m->hw & IWINFO_80211_AC))
2576 m->hw |= IWINFO_80211_A;
2587 static int nl80211_get_hwmodelist(const char *ifname, int *buf)
2589 struct nl80211_msg_conveyor *req;
2590 struct nl80211_modes m = { 0 };
2592 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
2595 nl80211_send(req, nl80211_get_modelist_cb, &m);
2608 static int nl80211_get_htmodelist(const char *ifname, int *buf)
2610 struct nl80211_msg_conveyor *req;
2611 struct nl80211_modes m = { 0 };
2613 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
2616 nl80211_send(req, nl80211_get_modelist_cb, &m);
2630 static int nl80211_get_ifcomb_cb(struct nl_msg *msg, void *arg)
2632 struct nlattr **attr = nl80211_parse(msg);
2633 struct nlattr *comb;
2635 int comb_rem, limit_rem, mode_rem;
2638 if (!attr[NL80211_ATTR_INTERFACE_COMBINATIONS])
2641 nla_for_each_nested(comb, attr[NL80211_ATTR_INTERFACE_COMBINATIONS], comb_rem)
2643 static struct nla_policy iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
2644 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
2645 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
2647 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB+1];
2648 static struct nla_policy iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
2649 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
2650 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
2652 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT+1];
2653 struct nlattr *limit;
2655 nla_parse_nested(tb_comb, NUM_NL80211_IFACE_COMB, comb, iface_combination_policy);
2657 if (!tb_comb[NL80211_IFACE_COMB_LIMITS])
2660 nla_for_each_nested(limit, tb_comb[NL80211_IFACE_COMB_LIMITS], limit_rem)
2662 struct nlattr *mode;
2664 nla_parse_nested(tb_limit, NUM_NL80211_IFACE_LIMIT, limit, iface_limit_policy);
2666 if (!tb_limit[NL80211_IFACE_LIMIT_TYPES] ||
2667 !tb_limit[NL80211_IFACE_LIMIT_MAX])
2670 if (nla_get_u32(tb_limit[NL80211_IFACE_LIMIT_MAX]) < 2)
2673 nla_for_each_nested(mode, tb_limit[NL80211_IFACE_LIMIT_TYPES], mode_rem) {
2674 if (nla_type(mode) == NL80211_IFTYPE_AP)
2683 static int nl80211_get_mbssid_support(const char *ifname, int *buf)
2685 struct nl80211_msg_conveyor *req;
2687 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
2691 nl80211_send(req, nl80211_get_ifcomb_cb, buf);
2696 static int nl80211_get_hardware_id(const char *ifname, char *buf)
2701 /* Got a radioX pseudo interface, find some interface on it or create one */
2702 if (!strncmp(ifname, "radio", 5))
2704 /* Reuse existing interface */
2705 if ((res = nl80211_phy2ifname(ifname)) != NULL)
2707 rv = wext_ops.hardware_id(res, buf);
2710 /* Need to spawn a temporary iface for finding IDs */
2711 else if ((res = nl80211_ifadd(ifname)) != NULL)
2713 rv = wext_ops.hardware_id(res, buf);
2719 rv = wext_ops.hardware_id(ifname, buf);
2722 /* Failed to obtain hardware IDs, search board config */
2725 rv = iwinfo_hardware_id_from_mtd((struct iwinfo_hardware_id *)buf);
2731 static const struct iwinfo_hardware_entry *
2732 nl80211_get_hardware_entry(const char *ifname)
2734 struct iwinfo_hardware_id id;
2736 if (nl80211_get_hardware_id(ifname, (char *)&id))
2739 return iwinfo_hardware(&id);
2742 static int nl80211_get_hardware_name(const char *ifname, char *buf)
2744 const struct iwinfo_hardware_entry *hw;
2746 if (!(hw = nl80211_get_hardware_entry(ifname)))
2747 sprintf(buf, "Generic MAC80211");
2749 sprintf(buf, "%s %s", hw->vendor_name, hw->device_name);
2754 static int nl80211_get_txpower_offset(const char *ifname, int *buf)
2756 const struct iwinfo_hardware_entry *hw;
2758 if (!(hw = nl80211_get_hardware_entry(ifname)))
2761 *buf = hw->txpower_offset;
2765 static int nl80211_get_frequency_offset(const char *ifname, int *buf)
2767 const struct iwinfo_hardware_entry *hw;
2769 if (!(hw = nl80211_get_hardware_entry(ifname)))
2772 *buf = hw->frequency_offset;
2776 static int nl80211_lookup_phyname(const char *section, char *buf)
2780 if ((idx = nl80211_phy_idx_from_uci(section)) < 0)
2783 sprintf(buf, "phy%d", idx);
2787 const struct iwinfo_ops nl80211_ops = {
2789 .probe = nl80211_probe,
2790 .channel = nl80211_get_channel,
2791 .frequency = nl80211_get_frequency,
2792 .frequency_offset = nl80211_get_frequency_offset,
2793 .txpower = nl80211_get_txpower,
2794 .txpower_offset = nl80211_get_txpower_offset,
2795 .bitrate = nl80211_get_bitrate,
2796 .signal = nl80211_get_signal,
2797 .noise = nl80211_get_noise,
2798 .quality = nl80211_get_quality,
2799 .quality_max = nl80211_get_quality_max,
2800 .mbssid_support = nl80211_get_mbssid_support,
2801 .hwmodelist = nl80211_get_hwmodelist,
2802 .htmodelist = nl80211_get_htmodelist,
2803 .mode = nl80211_get_mode,
2804 .ssid = nl80211_get_ssid,
2805 .bssid = nl80211_get_bssid,
2806 .country = nl80211_get_country,
2807 .hardware_id = nl80211_get_hardware_id,
2808 .hardware_name = nl80211_get_hardware_name,
2809 .encryption = nl80211_get_encryption,
2810 .phyname = nl80211_get_phyname,
2811 .assoclist = nl80211_get_assoclist,
2812 .txpwrlist = nl80211_get_txpwrlist,
2813 .scanlist = nl80211_get_scanlist,
2814 .freqlist = nl80211_get_freqlist,
2815 .countrylist = nl80211_get_countrylist,
2816 .lookup_phy = nl80211_lookup_phyname,
2817 .close = nl80211_close