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);
230 static struct nl80211_msg_conveyor * nl80211_ctl(int cmd, int flags)
232 if (nl80211_init() < 0)
235 return nl80211_new(nls->nlctrl, cmd, flags);
238 static int nl80211_phy_idx_from_uci_path(struct uci_section *s)
245 opt = uci_lookup_option_string(uci_ctx, s, "path");
249 snprintf(buf, sizeof(buf), "/sys/devices/%s/ieee80211/*/index", opt); /**/
250 if (glob(buf, 0, NULL, &gl))
254 idx = nl80211_readint(gl.gl_pathv[0]);
261 static int nl80211_phy_idx_from_uci_macaddr(struct uci_section *s)
268 opt = uci_lookup_option_string(uci_ctx, s, "macaddr");
272 snprintf(buf, sizeof(buf), "/sys/class/ieee80211/*"); /**/
273 if (glob(buf, 0, NULL, &gl))
276 for (i = 0; i < gl.gl_pathc; i++)
278 snprintf(buf, sizeof(buf), "%s/macaddress", gl.gl_pathv[i]);
279 if (nl80211_readstr(buf, buf, sizeof(buf)) <= 0)
282 if (fnmatch(opt, buf, FNM_CASEFOLD))
285 snprintf(buf, sizeof(buf), "%s/index", gl.gl_pathv[i]);
286 if ((idx = nl80211_readint(buf)) > -1)
295 static int nl80211_phy_idx_from_uci_phy(struct uci_section *s)
300 opt = uci_lookup_option_string(uci_ctx, s, "phy");
304 snprintf(buf, sizeof(buf), "/sys/class/ieee80211/%s/index", opt);
305 return nl80211_readint(buf);
308 static int nl80211_phy_idx_from_uci(const char *name)
310 struct uci_section *s;
313 s = iwinfo_uci_get_radio(name, "mac80211");
317 idx = nl80211_phy_idx_from_uci_path(s);
320 idx = nl80211_phy_idx_from_uci_macaddr(s);
323 idx = nl80211_phy_idx_from_uci_phy(s);
330 static struct nl80211_msg_conveyor * nl80211_msg(const char *ifname,
333 int ifidx = -1, phyidx = -1;
334 struct nl80211_msg_conveyor *cv;
339 if (nl80211_init() < 0)
342 if (!strncmp(ifname, "phy", 3))
343 phyidx = atoi(&ifname[3]);
344 else if (!strncmp(ifname, "radio", 5))
345 phyidx = nl80211_phy_idx_from_uci(ifname);
346 else if (!strncmp(ifname, "mon.", 4))
347 ifidx = if_nametoindex(&ifname[4]);
349 ifidx = if_nametoindex(ifname);
351 /* Valid ifidx must be greater than 0 */
352 if ((ifidx <= 0) && (phyidx < 0))
355 cv = nl80211_new(nls->nl80211, cmd, flags);
360 NLA_PUT_U32(cv->msg, NL80211_ATTR_IFINDEX, ifidx);
363 NLA_PUT_U32(cv->msg, NL80211_ATTR_WIPHY, phyidx);
372 static struct nl80211_msg_conveyor * nl80211_send(
373 struct nl80211_msg_conveyor *cv,
374 int (*cb_func)(struct nl_msg *, void *), void *cb_arg
376 static struct nl80211_msg_conveyor rcv;
380 nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, cb_func, cb_arg);
382 nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, nl80211_msg_response, &rcv);
384 if (nl_send_auto_complete(nls->nl_sock, cv->msg) < 0)
387 nl_cb_err(cv->cb, NL_CB_CUSTOM, nl80211_msg_error, &err);
388 nl_cb_set(cv->cb, NL_CB_FINISH, NL_CB_CUSTOM, nl80211_msg_finish, &err);
389 nl_cb_set(cv->cb, NL_CB_ACK, NL_CB_CUSTOM, nl80211_msg_ack, &err);
392 nl_recvmsgs(nls->nl_sock, cv->cb);
403 static struct nlattr ** nl80211_parse(struct nl_msg *msg)
405 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
406 static struct nlattr *attr[NL80211_ATTR_MAX + 1];
408 nla_parse(attr, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
409 genlmsg_attrlen(gnlh, 0), NULL);
415 static int nl80211_subscribe_cb(struct nl_msg *msg, void *arg)
417 struct nl80211_group_conveyor *cv = arg;
419 struct nlattr **attr = nl80211_parse(msg);
420 struct nlattr *mgrpinfo[CTRL_ATTR_MCAST_GRP_MAX + 1];
424 if (!attr[CTRL_ATTR_MCAST_GROUPS])
427 nla_for_each_nested(mgrp, attr[CTRL_ATTR_MCAST_GROUPS], mgrpidx)
429 nla_parse(mgrpinfo, CTRL_ATTR_MCAST_GRP_MAX,
430 nla_data(mgrp), nla_len(mgrp), NULL);
432 if (mgrpinfo[CTRL_ATTR_MCAST_GRP_ID] &&
433 mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME] &&
434 !strncmp(nla_data(mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME]),
435 cv->name, nla_len(mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME])))
437 cv->id = nla_get_u32(mgrpinfo[CTRL_ATTR_MCAST_GRP_ID]);
445 static int nl80211_subscribe(const char *family, const char *group)
447 struct nl80211_group_conveyor cv = { .name = group, .id = -ENOENT };
448 struct nl80211_msg_conveyor *req;
450 req = nl80211_ctl(CTRL_CMD_GETFAMILY, 0);
453 NLA_PUT_STRING(req->msg, CTRL_ATTR_FAMILY_NAME, family);
454 nl80211_send(req, nl80211_subscribe_cb, &cv);
460 return nl_socket_add_membership(nls->nl_sock, cv.id);
464 static int nl80211_wait_cb(struct nl_msg *msg, void *arg)
466 struct nl80211_event_conveyor *cv = arg;
467 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
469 if (gnlh->cmd == cv->wait)
470 cv->recv = gnlh->cmd;
475 static int nl80211_wait_seq_check(struct nl_msg *msg, void *arg)
480 static int nl80211_wait(const char *family, const char *group, int cmd)
482 struct nl80211_event_conveyor cv = { .wait = cmd };
485 if (nl80211_subscribe(family, group))
488 cb = nl_cb_alloc(NL_CB_DEFAULT);
493 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, nl80211_wait_seq_check, NULL);
494 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, nl80211_wait_cb, &cv );
497 nl_recvmsgs(nls->nl_sock, cb);
505 static int nl80211_freq2channel(int freq)
509 else if (freq < 2484)
510 return (freq - 2407) / 5;
511 else if (freq >= 4910 && freq <= 4980)
512 return (freq - 4000) / 5;
514 return (freq - 5000) / 5;
517 static int nl80211_channel2freq(int channel, const char *band)
519 if (!band || band[0] != 'a')
523 else if (channel < 14)
524 return (channel * 5) + 2407;
528 if (channel >= 182 && channel <= 196)
529 return (channel * 5) + 4000;
531 return (channel * 5) + 5000;
537 static int nl80211_ifname2phy_cb(struct nl_msg *msg, void *arg)
540 struct nlattr **attr = nl80211_parse(msg);
542 if (attr[NL80211_ATTR_WIPHY_NAME])
543 memcpy(buf, nla_data(attr[NL80211_ATTR_WIPHY_NAME]),
544 nla_len(attr[NL80211_ATTR_WIPHY_NAME]));
551 static char * nl80211_ifname2phy(const char *ifname)
553 static char phy[32] = { 0 };
554 struct nl80211_msg_conveyor *req;
556 memset(phy, 0, sizeof(phy));
558 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
561 nl80211_send(req, nl80211_ifname2phy_cb, phy);
565 return phy[0] ? phy : NULL;
568 static char * nl80211_phy2ifname(const char *ifname)
570 int ifidx = -1, cifidx = -1, phyidx = -1;
572 static char nif[IFNAMSIZ] = { 0 };
577 /* Only accept phy name of the form phy%d or radio%d */
580 else if (!strncmp(ifname, "phy", 3))
581 phyidx = atoi(&ifname[3]);
582 else if (!strncmp(ifname, "radio", 5))
583 phyidx = nl80211_phy_idx_from_uci(ifname);
587 memset(nif, 0, sizeof(nif));
591 if ((d = opendir("/sys/class/net")) != NULL)
593 while ((e = readdir(d)) != NULL)
595 snprintf(buffer, sizeof(buffer),
596 "/sys/class/net/%s/phy80211/index", e->d_name);
598 if (nl80211_readint(buffer) == phyidx)
600 snprintf(buffer, sizeof(buffer),
601 "/sys/class/net/%s/ifindex", e->d_name);
603 if ((cifidx = nl80211_readint(buffer)) >= 0 &&
604 ((ifidx < 0) || (cifidx < ifidx)))
607 strncpy(nif, e->d_name, sizeof(nif));
616 return nif[0] ? nif : NULL;
619 static int nl80211_get_mode_cb(struct nl_msg *msg, void *arg)
622 struct nlattr **tb = nl80211_parse(msg);
623 const int ifmodes[NL80211_IFTYPE_MAX + 1] = {
624 IWINFO_OPMODE_UNKNOWN, /* unspecified */
625 IWINFO_OPMODE_ADHOC, /* IBSS */
626 IWINFO_OPMODE_CLIENT, /* managed */
627 IWINFO_OPMODE_MASTER, /* AP */
628 IWINFO_OPMODE_AP_VLAN, /* AP/VLAN */
629 IWINFO_OPMODE_WDS, /* WDS */
630 IWINFO_OPMODE_MONITOR, /* monitor */
631 IWINFO_OPMODE_MESHPOINT, /* mesh point */
632 IWINFO_OPMODE_P2P_CLIENT, /* P2P-client */
633 IWINFO_OPMODE_P2P_GO, /* P2P-GO */
636 if (tb[NL80211_ATTR_IFTYPE])
637 *mode = ifmodes[nla_get_u32(tb[NL80211_ATTR_IFTYPE])];
643 static int nl80211_get_mode(const char *ifname, int *buf)
646 struct nl80211_msg_conveyor *req;
648 res = nl80211_phy2ifname(ifname);
649 req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0);
650 *buf = IWINFO_OPMODE_UNKNOWN;
654 nl80211_send(req, nl80211_get_mode_cb, buf);
658 return (*buf == IWINFO_OPMODE_UNKNOWN) ? -1 : 0;
661 static int __nl80211_hostapd_query(const char *ifname, ...)
664 char *phy, *search, *dest, *key, *val, buf[128];
665 int len, mode, found = 0, match = 1;
668 if (nl80211_get_mode(ifname, &mode))
671 if (mode != IWINFO_OPMODE_MASTER && mode != IWINFO_OPMODE_AP_VLAN)
674 phy = nl80211_ifname2phy(ifname);
679 snprintf(buf, sizeof(buf), "/var/run/hostapd-%s.conf", phy);
680 fp = fopen(buf, "r");
685 va_start(ap, ifname);
687 /* clear all destination buffers */
690 while ((search = va_arg(ap_cur, char *)) != NULL)
692 dest = va_arg(ap_cur, char *);
693 len = va_arg(ap_cur, int);
695 memset(dest, 0, len);
700 /* iterate applicable lines and copy found values into dest buffers */
701 while (fgets(buf, sizeof(buf), fp))
703 key = strtok(buf, " =\t\n");
704 val = strtok(NULL, "\n");
706 if (!key || !val || !*key || *key == '#')
709 if (!strcmp(key, "interface") || !strcmp(key, "bss"))
710 match = !strcmp(ifname, val);
717 while ((search = va_arg(ap_cur, char *)) != NULL)
719 dest = va_arg(ap_cur, char *);
720 len = va_arg(ap_cur, int);
722 if (!strcmp(search, key))
724 strncpy(dest, val, len - 1);
740 #define nl80211_hostapd_query(ifname, ...) \
741 __nl80211_hostapd_query(ifname, ##__VA_ARGS__, NULL)
744 static inline int nl80211_wpactl_recv(int sock, char *buf, int blen)
747 struct timeval tv = { 0, 256000 };
752 memset(buf, 0, blen);
754 if (select(sock + 1, &rfds, NULL, NULL, &tv) < 0)
757 if (!FD_ISSET(sock, &rfds))
760 return recv(sock, buf, blen - 1, 0);
763 static int nl80211_wpactl_connect(const char *ifname, struct sockaddr_un *local)
765 struct sockaddr_un remote = { 0 };
766 size_t remote_length, local_length;
768 int sock = socket(PF_UNIX, SOCK_DGRAM, 0);
772 remote.sun_family = AF_UNIX;
773 remote_length = sizeof(remote.sun_family) +
774 sprintf(remote.sun_path, "/var/run/wpa_supplicant-%s/%s",
777 if (fcntl(sock, F_SETFD, fcntl(sock, F_GETFD) | FD_CLOEXEC) < 0)
783 if (connect(sock, (struct sockaddr *)&remote, remote_length))
785 remote_length = sizeof(remote.sun_family) +
786 sprintf(remote.sun_path, "/var/run/wpa_supplicant/%s", ifname);
788 if (connect(sock, (struct sockaddr *)&remote, remote_length))
795 local->sun_family = AF_UNIX;
796 local_length = sizeof(local->sun_family) +
797 sprintf(local->sun_path, "/var/run/iwinfo-%s-%d", ifname, getpid());
799 if (bind(sock, (struct sockaddr *)local, local_length) < 0)
808 static int __nl80211_wpactl_query(const char *ifname, ...)
811 struct sockaddr_un local = { 0 };
812 int len, mode, found = 0, sock = -1;
813 char *search, *dest, *key, *val, *line, *pos, buf[512];
815 if (nl80211_get_mode(ifname, &mode))
818 if (mode != IWINFO_OPMODE_CLIENT && mode != IWINFO_OPMODE_ADHOC)
821 sock = nl80211_wpactl_connect(ifname, &local);
826 va_start(ap, ifname);
828 /* clear all destination buffers */
831 while ((search = va_arg(ap_cur, char *)) != NULL)
833 dest = va_arg(ap_cur, char *);
834 len = va_arg(ap_cur, int);
836 memset(dest, 0, len);
841 send(sock, "STATUS", 6, 0);
845 if (nl80211_wpactl_recv(sock, buf, sizeof(buf)) <= 0)
851 for (line = strtok_r(buf, "\n", &pos);
853 line = strtok_r(NULL, "\n", &pos))
855 key = strtok(line, "=");
856 val = strtok(NULL, "\n");
863 while ((search = va_arg(ap_cur, char *)) != NULL)
865 dest = va_arg(ap_cur, char *);
866 len = va_arg(ap_cur, int);
868 if (!strcmp(search, key))
870 strncpy(dest, val, len - 1);
885 unlink(local.sun_path);
890 #define nl80211_wpactl_query(ifname, ...) \
891 __nl80211_wpactl_query(ifname, ##__VA_ARGS__, NULL)
894 static char * nl80211_ifadd(const char *ifname)
896 char *rv = NULL, path[PATH_MAX];
897 static char nif[IFNAMSIZ] = { 0 };
898 struct nl80211_msg_conveyor *req;
901 req = nl80211_msg(ifname, NL80211_CMD_NEW_INTERFACE, 0);
904 snprintf(nif, sizeof(nif), "tmp.%s", ifname);
906 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, nif);
907 NLA_PUT_U32(req->msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_STATION);
909 nl80211_send(req, NULL, NULL);
911 snprintf(path, sizeof(path) - 1,
912 "/proc/sys/net/ipv6/conf/%s/disable_ipv6", nif);
914 if ((sysfs = fopen(path, "w")) != NULL)
916 fwrite("0\n", 1, 2, sysfs);
929 static void nl80211_ifdel(const char *ifname)
931 struct nl80211_msg_conveyor *req;
933 req = nl80211_msg(ifname, NL80211_CMD_DEL_INTERFACE, 0);
936 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, ifname);
938 nl80211_send(req, NULL, NULL);
945 static void nl80211_hostapd_hup(const char *ifname)
949 char *phy = nl80211_ifname2phy(ifname);
953 snprintf(buf, sizeof(buf), "/var/run/wifi-%s.pid", phy);
954 if ((fd = open(buf, O_RDONLY)) > 0)
956 if (read(fd, buf, sizeof(buf)) > 0)
968 static int nl80211_probe(const char *ifname)
970 return !!nl80211_ifname2phy(ifname);
973 struct nl80211_ssid_bssid {
975 unsigned char bssid[7];
978 static int nl80211_get_ssid_bssid_cb(struct nl_msg *msg, void *arg)
982 struct nl80211_ssid_bssid *sb = arg;
983 struct nlattr **tb = nl80211_parse(msg);
984 struct nlattr *bss[NL80211_BSS_MAX + 1];
986 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
987 [NL80211_BSS_INFORMATION_ELEMENTS] = { 0 },
988 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
991 if (!tb[NL80211_ATTR_BSS] ||
992 nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
994 !bss[NL80211_BSS_BSSID] ||
995 !bss[NL80211_BSS_STATUS] ||
996 !bss[NL80211_BSS_INFORMATION_ELEMENTS])
1001 switch (nla_get_u32(bss[NL80211_BSS_STATUS]))
1003 case NL80211_BSS_STATUS_ASSOCIATED:
1004 case NL80211_BSS_STATUS_AUTHENTICATED:
1005 case NL80211_BSS_STATUS_IBSS_JOINED:
1009 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1010 ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1012 while (ielen >= 2 && ielen >= ie[1])
1016 memcpy(sb->ssid, ie + 2, min(ie[1], IWINFO_ESSID_MAX_SIZE));
1027 memcpy(sb->bssid + 1, nla_data(bss[NL80211_BSS_BSSID]), 6);
1036 static int nl80211_get_ssid(const char *ifname, char *buf)
1039 struct nl80211_msg_conveyor *req;
1040 struct nl80211_ssid_bssid sb;
1042 /* try to find ssid from scan dump results */
1043 res = nl80211_phy2ifname(ifname);
1044 req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
1046 sb.ssid = (unsigned char *)buf;
1051 nl80211_send(req, nl80211_get_ssid_bssid_cb, &sb);
1055 /* failed, try to find from hostapd info */
1057 nl80211_hostapd_query(ifname, "ssid", buf, IWINFO_ESSID_MAX_SIZE + 1);
1059 return (*buf == 0) ? -1 : 0;
1062 static int nl80211_get_bssid(const char *ifname, char *buf)
1064 char *res, bssid[sizeof("FF:FF:FF:FF:FF:FF\0")];
1065 struct nl80211_msg_conveyor *req;
1066 struct nl80211_ssid_bssid sb;
1068 /* try to find bssid from scan dump results */
1069 res = nl80211_phy2ifname(ifname);
1070 req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
1077 nl80211_send(req, nl80211_get_ssid_bssid_cb, &sb);
1081 /* failed, try to find mac from hostapd info */
1082 if ((sb.bssid[0] == 0) &&
1083 nl80211_hostapd_query(ifname, "bssid", bssid, sizeof(bssid)))
1086 sb.bssid[1] = strtol(&bssid[0], NULL, 16);
1087 sb.bssid[2] = strtol(&bssid[3], NULL, 16);
1088 sb.bssid[3] = strtol(&bssid[6], NULL, 16);
1089 sb.bssid[4] = strtol(&bssid[9], NULL, 16);
1090 sb.bssid[5] = strtol(&bssid[12], NULL, 16);
1091 sb.bssid[6] = strtol(&bssid[15], NULL, 16);
1096 sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
1097 sb.bssid[1], sb.bssid[2], sb.bssid[3],
1098 sb.bssid[4], sb.bssid[5], sb.bssid[6]);
1107 static int nl80211_get_frequency_scan_cb(struct nl_msg *msg, void *arg)
1110 struct nlattr **attr = nl80211_parse(msg);
1111 struct nlattr *binfo[NL80211_BSS_MAX + 1];
1113 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1114 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1115 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1118 if (attr[NL80211_ATTR_BSS] &&
1119 !nla_parse_nested(binfo, NL80211_BSS_MAX,
1120 attr[NL80211_ATTR_BSS], bss_policy))
1122 if (binfo[NL80211_BSS_STATUS] && binfo[NL80211_BSS_FREQUENCY])
1123 *freq = nla_get_u32(binfo[NL80211_BSS_FREQUENCY]);
1129 static int nl80211_get_frequency_info_cb(struct nl_msg *msg, void *arg)
1132 struct nlattr **tb = nl80211_parse(msg);
1134 if (tb[NL80211_ATTR_WIPHY_FREQ])
1135 *freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
1140 static int nl80211_get_frequency(const char *ifname, int *buf)
1142 char *res, channel[4], hwmode[2];
1143 struct nl80211_msg_conveyor *req;
1145 /* try to find frequency from interface info */
1146 res = nl80211_phy2ifname(ifname);
1147 req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0);
1152 nl80211_send(req, nl80211_get_frequency_info_cb, buf);
1156 /* failed, try to find frequency from hostapd info */
1158 nl80211_hostapd_query(ifname, "hw_mode", hwmode, sizeof(hwmode),
1159 "channel", channel, sizeof(channel)) == 2)
1161 *buf = nl80211_channel2freq(atoi(channel), hwmode);
1164 /* failed, try to find frequency from scan results */
1167 res = nl80211_phy2ifname(ifname);
1168 req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
1172 nl80211_send(req, nl80211_get_frequency_scan_cb, buf);
1177 return (*buf == 0) ? -1 : 0;
1180 static int nl80211_get_channel(const char *ifname, int *buf)
1182 if (!nl80211_get_frequency(ifname, buf))
1184 *buf = nl80211_freq2channel(*buf);
1192 static int nl80211_get_txpower(const char *ifname, int *buf)
1196 char path[PATH_MAX];
1198 res = nl80211_ifname2phy(ifname);
1199 snprintf(path, sizeof(path), "/sys/kernel/debug/ieee80211/%s/power",
1200 res ? res : ifname);
1202 if ((*buf = nl80211_readint(path)) > -1)
1206 return wext_ops.txpower(ifname, buf);
1210 static int nl80211_fill_signal_cb(struct nl_msg *msg, void *arg)
1214 struct nl80211_rssi_rate *rr = arg;
1215 struct nlattr **attr = nl80211_parse(msg);
1216 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1217 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1219 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
1220 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
1221 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
1222 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
1223 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
1224 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
1225 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1226 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
1227 [NL80211_STA_INFO_LLID] = { .type = NLA_U16 },
1228 [NL80211_STA_INFO_PLID] = { .type = NLA_U16 },
1229 [NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 },
1232 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1233 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1234 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1235 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1236 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1239 if (attr[NL80211_ATTR_STA_INFO])
1241 if (!nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1242 attr[NL80211_ATTR_STA_INFO], stats_policy))
1244 if (sinfo[NL80211_STA_INFO_SIGNAL])
1246 dbm = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1247 rr->rssi = rr->rssi ? (int8_t)((rr->rssi + dbm) / 2) : dbm;
1250 if (sinfo[NL80211_STA_INFO_TX_BITRATE])
1252 if (!nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1253 sinfo[NL80211_STA_INFO_TX_BITRATE],
1256 if (rinfo[NL80211_RATE_INFO_BITRATE])
1258 mbit = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]);
1260 ? (int16_t)((rr->rate + mbit) / 2) : mbit;
1270 static void nl80211_fill_signal(const char *ifname, struct nl80211_rssi_rate *r)
1274 struct nl80211_msg_conveyor *req;
1279 if ((d = opendir("/sys/class/net")) != NULL)
1281 while ((de = readdir(d)) != NULL)
1283 if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
1284 (!de->d_name[strlen(ifname)] ||
1285 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
1287 req = nl80211_msg(de->d_name, NL80211_CMD_GET_STATION,
1292 nl80211_send(req, nl80211_fill_signal_cb, r);
1302 static int nl80211_get_bitrate(const char *ifname, int *buf)
1304 struct nl80211_rssi_rate rr;
1306 nl80211_fill_signal(ifname, &rr);
1310 *buf = (rr.rate * 100);
1317 static int nl80211_get_signal(const char *ifname, int *buf)
1319 struct nl80211_rssi_rate rr;
1321 nl80211_fill_signal(ifname, &rr);
1332 static int nl80211_get_noise_cb(struct nl_msg *msg, void *arg)
1334 int8_t *noise = arg;
1335 struct nlattr **tb = nl80211_parse(msg);
1336 struct nlattr *si[NL80211_SURVEY_INFO_MAX + 1];
1338 static struct nla_policy sp[NL80211_SURVEY_INFO_MAX + 1] = {
1339 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1340 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1343 if (!tb[NL80211_ATTR_SURVEY_INFO])
1346 if (nla_parse_nested(si, NL80211_SURVEY_INFO_MAX,
1347 tb[NL80211_ATTR_SURVEY_INFO], sp))
1350 if (!si[NL80211_SURVEY_INFO_NOISE])
1353 if (!*noise || si[NL80211_SURVEY_INFO_IN_USE])
1354 *noise = (int8_t)nla_get_u8(si[NL80211_SURVEY_INFO_NOISE]);
1360 static int nl80211_get_noise(const char *ifname, int *buf)
1363 struct nl80211_msg_conveyor *req;
1365 req = nl80211_msg(ifname, NL80211_CMD_GET_SURVEY, NLM_F_DUMP);
1370 nl80211_send(req, nl80211_get_noise_cb, &noise);
1383 static int nl80211_get_quality(const char *ifname, int *buf)
1387 if (!nl80211_get_signal(ifname, &signal))
1389 /* A positive signal level is usually just a quality
1390 * value, pass through as-is */
1396 /* The cfg80211 wext compat layer assumes a signal range
1397 * of -110 dBm to -40 dBm, the quality value is derived
1398 * by adding 110 to the signal level */
1403 else if (signal > -40)
1406 *buf = (signal + 110);
1415 static int nl80211_get_quality_max(const char *ifname, int *buf)
1417 /* The cfg80211 wext compat layer assumes a maximum
1424 static int nl80211_check_wepkey(const char *key)
1428 switch (strlen(key))
1432 return IWINFO_CIPHER_WEP40;
1436 return IWINFO_CIPHER_WEP104;
1443 static int nl80211_get_encryption(const char *ifname, char *buf)
1445 char wpa[2], wpa_key_mgmt[16], wpa_pairwise[16], wpa_groupwise[16];
1446 char auth_algs[2], wep_key0[27], wep_key1[27], wep_key2[27], wep_key3[27];
1448 struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf;
1450 /* WPA supplicant */
1451 if (nl80211_wpactl_query(ifname,
1452 "pairwise_cipher", wpa_pairwise, sizeof(wpa_pairwise),
1453 "group_cipher", wpa_groupwise, sizeof(wpa_groupwise),
1454 "key_mgmt", wpa_key_mgmt, sizeof(wpa_key_mgmt)))
1457 if (!strcmp(wpa_key_mgmt, "NONE"))
1459 if (strstr(wpa_pairwise, "WEP-40"))
1460 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1461 else if (strstr(wpa_pairwise, "WEP-104"))
1462 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1464 if (strstr(wpa_groupwise, "WEP-40"))
1465 c->group_ciphers |= IWINFO_CIPHER_WEP40;
1466 else if (strstr(wpa_groupwise, "WEP-104"))
1467 c->group_ciphers |= IWINFO_CIPHER_WEP104;
1469 c->enabled = !!(c->pair_ciphers | c->group_ciphers);
1470 c->auth_suites |= IWINFO_KMGMT_NONE;
1471 c->auth_algs |= IWINFO_AUTH_OPEN; /* XXX: assumption */
1475 else if (strstr(wpa_key_mgmt, "WPA"))
1477 if (strstr(wpa_pairwise, "TKIP"))
1478 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1479 else if (strstr(wpa_pairwise, "CCMP"))
1480 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1481 else if (strstr(wpa_pairwise, "NONE"))
1482 c->pair_ciphers |= IWINFO_CIPHER_NONE;
1483 else if (strstr(wpa_pairwise, "WEP-40"))
1484 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1485 else if (strstr(wpa_pairwise, "WEP-104"))
1486 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1488 if (strstr(wpa_groupwise, "TKIP"))
1489 c->group_ciphers |= IWINFO_CIPHER_TKIP;
1490 else if (strstr(wpa_groupwise, "CCMP"))
1491 c->group_ciphers |= IWINFO_CIPHER_CCMP;
1492 else if (strstr(wpa_groupwise, "NONE"))
1493 c->group_ciphers |= IWINFO_CIPHER_NONE;
1494 else if (strstr(wpa_groupwise, "WEP-40"))
1495 c->group_ciphers |= IWINFO_CIPHER_WEP40;
1496 else if (strstr(wpa_groupwise, "WEP-104"))
1497 c->group_ciphers |= IWINFO_CIPHER_WEP104;
1499 if (strstr(wpa_key_mgmt, "WPA2"))
1501 else if (strstr(wpa_key_mgmt, "WPA"))
1504 if (strstr(wpa_key_mgmt, "PSK"))
1505 c->auth_suites |= IWINFO_KMGMT_PSK;
1506 else if (strstr(wpa_key_mgmt, "EAP") ||
1507 strstr(wpa_key_mgmt, "802.1X"))
1508 c->auth_suites |= IWINFO_KMGMT_8021x;
1509 else if (strstr(wpa_key_mgmt, "NONE"))
1510 c->auth_suites |= IWINFO_KMGMT_NONE;
1512 c->enabled = !!(c->wpa_version && c->auth_suites);
1519 else if (nl80211_hostapd_query(ifname,
1520 "wpa", wpa, sizeof(wpa),
1521 "wpa_key_mgmt", wpa_key_mgmt, sizeof(wpa_key_mgmt),
1522 "wpa_pairwise", wpa_pairwise, sizeof(wpa_pairwise),
1523 "auth_algs", auth_algs, sizeof(auth_algs),
1524 "wep_key0", wep_key0, sizeof(wep_key0),
1525 "wep_key1", wep_key1, sizeof(wep_key1),
1526 "wep_key2", wep_key2, sizeof(wep_key2),
1527 "wep_key3", wep_key3, sizeof(wep_key3)))
1529 c->wpa_version = wpa[0] ? atoi(wpa) : 0;
1531 if (wpa_key_mgmt[0])
1533 if (strstr(wpa_key_mgmt, "PSK"))
1534 c->auth_suites |= IWINFO_KMGMT_PSK;
1536 if (strstr(wpa_key_mgmt, "EAP"))
1537 c->auth_suites |= IWINFO_KMGMT_8021x;
1539 if (strstr(wpa_key_mgmt, "NONE"))
1540 c->auth_suites |= IWINFO_KMGMT_NONE;
1544 c->auth_suites |= IWINFO_KMGMT_PSK;
1547 if (wpa_pairwise[0])
1549 if (strstr(wpa_pairwise, "TKIP"))
1550 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1552 if (strstr(wpa_pairwise, "CCMP"))
1553 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1555 if (strstr(wpa_pairwise, "NONE"))
1556 c->pair_ciphers |= IWINFO_CIPHER_NONE;
1561 switch(atoi(auth_algs))
1564 c->auth_algs |= IWINFO_AUTH_OPEN;
1568 c->auth_algs |= IWINFO_AUTH_SHARED;
1572 c->auth_algs |= IWINFO_AUTH_OPEN;
1573 c->auth_algs |= IWINFO_AUTH_SHARED;
1577 c->pair_ciphers |= nl80211_check_wepkey(wep_key0);
1578 c->pair_ciphers |= nl80211_check_wepkey(wep_key1);
1579 c->pair_ciphers |= nl80211_check_wepkey(wep_key2);
1580 c->pair_ciphers |= nl80211_check_wepkey(wep_key3);
1583 c->group_ciphers = c->pair_ciphers;
1584 c->enabled = (c->wpa_version || c->pair_ciphers) ? 1 : 0;
1592 static int nl80211_get_phyname(const char *ifname, char *buf)
1596 name = nl80211_ifname2phy(ifname);
1603 else if ((name = nl80211_phy2ifname(ifname)) != NULL)
1605 name = nl80211_ifname2phy(name);
1609 strcpy(buf, ifname);
1618 static int nl80211_get_assoclist_cb(struct nl_msg *msg, void *arg)
1620 struct nl80211_array_buf *arr = arg;
1621 struct iwinfo_assoclist_entry *e = arr->buf;
1622 struct nlattr **attr = nl80211_parse(msg);
1623 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1624 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1625 struct nl80211_sta_flag_update *sta_flags;
1627 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
1628 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
1629 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
1630 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
1631 [NL80211_STA_INFO_RX_BITRATE] = { .type = NLA_NESTED },
1632 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED },
1633 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1634 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
1635 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
1636 [NL80211_STA_INFO_TX_RETRIES] = { .type = NLA_U32 },
1637 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
1638 [NL80211_STA_INFO_T_OFFSET] = { .type = NLA_U64 },
1639 [NL80211_STA_INFO_STA_FLAGS] =
1640 { .minlen = sizeof(struct nl80211_sta_flag_update) },
1643 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1644 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1645 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1646 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1647 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1650 /* advance to end of array */
1652 memset(e, 0, sizeof(*e));
1654 if (attr[NL80211_ATTR_MAC])
1655 memcpy(e->mac, nla_data(attr[NL80211_ATTR_MAC]), 6);
1657 if (attr[NL80211_ATTR_STA_INFO] &&
1658 !nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1659 attr[NL80211_ATTR_STA_INFO], stats_policy))
1661 if (sinfo[NL80211_STA_INFO_SIGNAL])
1662 e->signal = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1664 if (sinfo[NL80211_STA_INFO_INACTIVE_TIME])
1665 e->inactive = nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]);
1667 if (sinfo[NL80211_STA_INFO_RX_PACKETS])
1668 e->rx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS]);
1670 if (sinfo[NL80211_STA_INFO_TX_PACKETS])
1671 e->tx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS]);
1673 if (sinfo[NL80211_STA_INFO_RX_BITRATE] &&
1674 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1675 sinfo[NL80211_STA_INFO_RX_BITRATE], rate_policy))
1677 if (rinfo[NL80211_RATE_INFO_BITRATE])
1679 nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]) * 100;
1681 if (rinfo[NL80211_RATE_INFO_MCS])
1682 e->rx_rate.mcs = nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]);
1684 if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
1685 e->rx_rate.is_40mhz = 1;
1687 if (rinfo[NL80211_RATE_INFO_SHORT_GI])
1688 e->rx_rate.is_short_gi = 1;
1691 if (sinfo[NL80211_STA_INFO_TX_BITRATE] &&
1692 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1693 sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy))
1695 if (rinfo[NL80211_RATE_INFO_BITRATE])
1697 nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]) * 100;
1699 if (rinfo[NL80211_RATE_INFO_MCS])
1700 e->tx_rate.mcs = nla_get_u8(rinfo[NL80211_RATE_INFO_MCS]);
1702 if (rinfo[NL80211_RATE_INFO_40_MHZ_WIDTH])
1703 e->tx_rate.is_40mhz = 1;
1705 if (rinfo[NL80211_RATE_INFO_SHORT_GI])
1706 e->tx_rate.is_short_gi = 1;
1709 if (sinfo[NL80211_STA_INFO_RX_BYTES])
1710 e->rx_bytes = nla_get_u32(sinfo[NL80211_STA_INFO_RX_BYTES]);
1712 if (sinfo[NL80211_STA_INFO_TX_BYTES])
1713 e->tx_bytes = nla_get_u32(sinfo[NL80211_STA_INFO_TX_BYTES]);
1715 if (sinfo[NL80211_STA_INFO_TX_RETRIES])
1716 e->tx_retries = nla_get_u32(sinfo[NL80211_STA_INFO_TX_RETRIES]);
1718 if (sinfo[NL80211_STA_INFO_TX_FAILED])
1719 e->tx_failed = nla_get_u32(sinfo[NL80211_STA_INFO_TX_FAILED]);
1721 if (sinfo[NL80211_STA_INFO_T_OFFSET])
1722 e->t_offset = nla_get_u64(sinfo[NL80211_STA_INFO_T_OFFSET]);
1725 if (sinfo[NL80211_STA_INFO_STA_FLAGS])
1727 sta_flags = (struct nl80211_sta_flag_update *)
1728 nla_data(sinfo[NL80211_STA_INFO_STA_FLAGS]);
1730 if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
1731 sta_flags->set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1732 e->is_authorized = 1;
1734 if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1735 sta_flags->set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1736 e->is_authenticated = 1;
1738 if (sta_flags->mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) &&
1739 sta_flags->set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1740 e->is_preamble_short = 1;
1742 if (sta_flags->mask & BIT(NL80211_STA_FLAG_WME) &&
1743 sta_flags->set & BIT(NL80211_STA_FLAG_WME))
1746 if (sta_flags->mask & BIT(NL80211_STA_FLAG_MFP) &&
1747 sta_flags->set & BIT(NL80211_STA_FLAG_MFP))
1750 if (sta_flags->mask & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
1751 sta_flags->set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1756 e->noise = 0; /* filled in by caller */
1762 static int nl80211_get_assoclist(const char *ifname, char *buf, int *len)
1767 struct nl80211_msg_conveyor *req;
1768 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
1769 struct iwinfo_assoclist_entry *e;
1771 if ((d = opendir("/sys/class/net")) != NULL)
1773 while ((de = readdir(d)) != NULL)
1775 if (!strncmp(de->d_name, ifname, strlen(ifname)) &&
1776 (!de->d_name[strlen(ifname)] ||
1777 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4)))
1779 req = nl80211_msg(de->d_name, NL80211_CMD_GET_STATION,
1784 nl80211_send(req, nl80211_get_assoclist_cb, &arr);
1792 if (!nl80211_get_noise(ifname, &noise))
1793 for (i = 0, e = arr.buf; i < arr.count; i++, e++)
1796 *len = (arr.count * sizeof(struct iwinfo_assoclist_entry));
1803 static int nl80211_get_txpwrlist_cb(struct nl_msg *msg, void *arg)
1806 int ch_cur, ch_cmp, bands_remain, freqs_remain;
1808 struct nlattr **attr = nl80211_parse(msg);
1809 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
1810 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
1811 struct nlattr *band, *freq;
1813 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1814 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1815 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1816 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1817 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1818 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1819 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1822 ch_cur = *dbm_max; /* value int* is initialized with channel by caller */
1825 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
1827 nla_parse(bands, NL80211_BAND_ATTR_MAX, nla_data(band),
1828 nla_len(band), NULL);
1830 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
1832 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
1833 nla_data(freq), nla_len(freq), freq_policy);
1835 ch_cmp = nl80211_freq2channel(nla_get_u32(
1836 freqs[NL80211_FREQUENCY_ATTR_FREQ]));
1838 if ((!ch_cur || (ch_cmp == ch_cur)) &&
1839 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER])
1841 *dbm_max = (int)(0.01 * nla_get_u32(
1842 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]));
1852 static int nl80211_get_txpwrlist(const char *ifname, char *buf, int *len)
1855 int dbm_max = -1, dbm_cur, dbm_cnt;
1856 struct nl80211_msg_conveyor *req;
1857 struct iwinfo_txpwrlist_entry entry;
1859 if (nl80211_get_channel(ifname, &ch_cur))
1862 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
1865 /* initialize the value pointer with channel for callback */
1868 nl80211_send(req, nl80211_get_txpwrlist_cb, &dbm_max);
1874 for (dbm_cur = 0, dbm_cnt = 0;
1876 dbm_cur++, dbm_cnt++)
1878 entry.dbm = dbm_cur;
1879 entry.mw = iwinfo_dbm2mw(dbm_cur);
1881 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
1884 entry.dbm = dbm_max;
1885 entry.mw = iwinfo_dbm2mw(dbm_max);
1887 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry));
1890 *len = dbm_cnt * sizeof(entry);
1897 static void nl80211_get_scancrypto(const char *spec,
1898 struct iwinfo_crypto_entry *c)
1900 if (strstr(spec, "WPA") || strstr(spec, "WEP"))
1904 if (strstr(spec, "WPA2-") && strstr(spec, "WPA-"))
1907 else if (strstr(spec, "WPA2"))
1910 else if (strstr(spec, "WPA"))
1913 else if (strstr(spec, "WEP"))
1914 c->auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
1917 if (strstr(spec, "PSK"))
1918 c->auth_suites |= IWINFO_KMGMT_PSK;
1920 if (strstr(spec, "802.1X") || strstr(spec, "EAP"))
1921 c->auth_suites |= IWINFO_KMGMT_8021x;
1923 if (strstr(spec, "WPA-NONE"))
1924 c->auth_suites |= IWINFO_KMGMT_NONE;
1927 if (strstr(spec, "TKIP"))
1928 c->pair_ciphers |= IWINFO_CIPHER_TKIP;
1930 if (strstr(spec, "CCMP"))
1931 c->pair_ciphers |= IWINFO_CIPHER_CCMP;
1933 if (strstr(spec, "WEP-40"))
1934 c->pair_ciphers |= IWINFO_CIPHER_WEP40;
1936 if (strstr(spec, "WEP-104"))
1937 c->pair_ciphers |= IWINFO_CIPHER_WEP104;
1939 c->group_ciphers = c->pair_ciphers;
1948 struct nl80211_scanlist {
1949 struct iwinfo_scanlist_entry *e;
1954 static void nl80211_get_scanlist_ie(struct nlattr **bss,
1955 struct iwinfo_scanlist_entry *e)
1957 int ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1958 unsigned char *ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1959 static unsigned char ms_oui[3] = { 0x00, 0x50, 0xf2 };
1962 while (ielen >= 2 && ielen >= ie[1])
1967 len = min(ie[1], IWINFO_ESSID_MAX_SIZE);
1968 memcpy(e->ssid, ie + 2, len);
1973 iwinfo_parse_rsn(&e->crypto, ie + 2, ie[1],
1974 IWINFO_CIPHER_CCMP, IWINFO_KMGMT_8021x);
1977 case 221: /* Vendor */
1978 if (ie[1] >= 4 && !memcmp(ie + 2, ms_oui, 3) && ie[5] == 1)
1979 iwinfo_parse_rsn(&e->crypto, ie + 6, ie[1] - 4,
1980 IWINFO_CIPHER_TKIP, IWINFO_KMGMT_PSK);
1989 static int nl80211_get_scanlist_cb(struct nl_msg *msg, void *arg)
1994 struct nl80211_scanlist *sl = arg;
1995 struct nlattr **tb = nl80211_parse(msg);
1996 struct nlattr *bss[NL80211_BSS_MAX + 1];
1998 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1999 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2000 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2001 [NL80211_BSS_BSSID] = { 0 },
2002 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2003 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2004 [NL80211_BSS_INFORMATION_ELEMENTS] = { 0 },
2005 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2006 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
2007 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
2008 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
2009 [NL80211_BSS_BEACON_IES] = { 0 },
2012 if (!tb[NL80211_ATTR_BSS] ||
2013 nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2015 !bss[NL80211_BSS_BSSID])
2020 if (bss[NL80211_BSS_CAPABILITY])
2021 caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
2025 memset(sl->e, 0, sizeof(*sl->e));
2026 memcpy(sl->e->mac, nla_data(bss[NL80211_BSS_BSSID]), 6);
2029 sl->e->mode = IWINFO_OPMODE_ADHOC;
2030 else if (caps & (1<<0))
2031 sl->e->mode = IWINFO_OPMODE_MASTER;
2033 sl->e->mode = IWINFO_OPMODE_MESHPOINT;
2036 sl->e->crypto.enabled = 1;
2038 if (bss[NL80211_BSS_FREQUENCY])
2039 sl->e->channel = nl80211_freq2channel(nla_get_u32(
2040 bss[NL80211_BSS_FREQUENCY]));
2042 if (bss[NL80211_BSS_INFORMATION_ELEMENTS])
2043 nl80211_get_scanlist_ie(bss, sl->e);
2045 if (bss[NL80211_BSS_SIGNAL_MBM])
2048 (uint8_t)((int32_t)nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]) / 100);
2050 rssi = sl->e->signal - 0x100;
2054 else if (rssi > -40)
2057 sl->e->quality = (rssi + 110);
2058 sl->e->quality_max = 70;
2061 if (sl->e->crypto.enabled && !sl->e->crypto.wpa_version)
2063 sl->e->crypto.auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED;
2064 sl->e->crypto.pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
2073 static int nl80211_get_scanlist_nl(const char *ifname, char *buf, int *len)
2075 struct nl80211_msg_conveyor *req;
2076 struct nl80211_scanlist sl = { .e = (struct iwinfo_scanlist_entry *)buf };
2078 req = nl80211_msg(ifname, NL80211_CMD_TRIGGER_SCAN, 0);
2081 nl80211_send(req, NULL, NULL);
2085 nl80211_wait("nl80211", "scan", NL80211_CMD_NEW_SCAN_RESULTS);
2087 req = nl80211_msg(ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
2090 nl80211_send(req, nl80211_get_scanlist_cb, &sl);
2094 *len = sl.len * sizeof(struct iwinfo_scanlist_entry);
2095 return *len ? 0 : -1;
2098 static int wpasupp_ssid_decode(const char *in, char *out, int outlen)
2101 (((x) >= 'a') ? ((x) - 'a' + 10) : \
2102 (((x) >= 'A') ? ((x) - 'A' + 10) : ((x) - '0')))
2108 if (len + 1 >= outlen)
2118 out[len++] = '\n'; in++;
2122 out[len++] = '\r'; in++;
2126 out[len++] = '\t'; in++;
2130 out[len++] = '\033'; in++;
2134 if (isxdigit(*(in+1)) && isxdigit(*(in+2)))
2135 out[len++] = hex(*(in+1)) * 16 + hex(*(in+2));
2157 static int nl80211_get_scanlist_wpactl(const char *ifname, char *buf, int *len)
2159 int sock, qmax, rssi, tries, count = -1, ready = 0;
2160 char *pos, *line, *bssid, *freq, *signal, *flags, *ssid, reply[4096];
2161 struct sockaddr_un local = { 0 };
2162 struct iwinfo_scanlist_entry *e = (struct iwinfo_scanlist_entry *)buf;
2164 sock = nl80211_wpactl_connect(ifname, &local);
2169 send(sock, "ATTACH", 6, 0);
2170 send(sock, "SCAN", 4, 0);
2173 * wait for scan results:
2174 * nl80211_wpactl_recv() will use a timeout of 256ms and we need to scan
2175 * 72 channels at most. We'll also receive two "OK" messages acknowledging
2176 * the "ATTACH" and "SCAN" commands and the driver might need a bit extra
2177 * time to process the results, so try 72 + 2 + 1 times.
2179 for (tries = 0; tries < 75; tries++)
2181 if (nl80211_wpactl_recv(sock, reply, sizeof(reply)) <= 0)
2184 /* got an event notification */
2185 if (reply[0] == '<')
2187 /* scan results are ready */
2188 if (strstr(reply, "CTRL-EVENT-SCAN-RESULTS"))
2190 /* send "SCAN_RESULTS" command */
2191 ready = (send(sock, "SCAN_RESULTS", 12, 0) == 12);
2195 /* is another unrelated event, retry */
2200 /* receive and parse scan results if the wait above didn't time out */
2201 if (ready && nl80211_wpactl_recv(sock, reply, sizeof(reply)) > 0)
2203 nl80211_get_quality_max(ifname, &qmax);
2205 for (line = strtok_r(reply, "\n", &pos);
2207 line = strtok_r(NULL, "\n", &pos))
2209 /* skip header line */
2216 bssid = strtok(line, "\t");
2217 freq = strtok(NULL, "\t");
2218 signal = strtok(NULL, "\t");
2219 flags = strtok(NULL, "\t");
2220 ssid = strtok(NULL, "\n");
2222 if (!bssid || !freq || !signal || !flags || !ssid)
2226 e->mac[0] = strtol(&bssid[0], NULL, 16);
2227 e->mac[1] = strtol(&bssid[3], NULL, 16);
2228 e->mac[2] = strtol(&bssid[6], NULL, 16);
2229 e->mac[3] = strtol(&bssid[9], NULL, 16);
2230 e->mac[4] = strtol(&bssid[12], NULL, 16);
2231 e->mac[5] = strtol(&bssid[15], NULL, 16);
2234 wpasupp_ssid_decode(ssid, e->ssid, sizeof(e->ssid));
2237 if (strstr(flags, "[MESH]"))
2238 e->mode = IWINFO_OPMODE_MESHPOINT;
2239 else if (strstr(flags, "[IBSS]"))
2240 e->mode = IWINFO_OPMODE_ADHOC;
2242 e->mode = IWINFO_OPMODE_MASTER;
2245 e->channel = nl80211_freq2channel(atoi(freq));
2248 rssi = atoi(signal);
2254 /* The cfg80211 wext compat layer assumes a signal range
2255 * of -110 dBm to -40 dBm, the quality value is derived
2256 * by adding 110 to the signal level */
2259 else if (rssi > -40)
2262 e->quality = (rssi + 110);
2270 e->quality_max = qmax;
2273 nl80211_get_scancrypto(flags, &e->crypto);
2279 *len = count * sizeof(struct iwinfo_scanlist_entry);
2283 unlink(local.sun_path);
2285 return (count >= 0) ? 0 : -1;
2288 static int nl80211_get_scanlist(const char *ifname, char *buf, int *len)
2295 /* Got a radioX pseudo interface, find some interface on it or create one */
2296 if (!strncmp(ifname, "radio", 5))
2298 /* Reuse existing interface */
2299 if ((res = nl80211_phy2ifname(ifname)) != NULL)
2301 return nl80211_get_scanlist(res, buf, len);
2304 /* Need to spawn a temporary iface for scanning */
2305 else if ((res = nl80211_ifadd(ifname)) != NULL)
2307 rv = nl80211_get_scanlist(res, buf, len);
2313 /* WPA supplicant */
2314 if (!nl80211_get_scanlist_wpactl(ifname, buf, len))
2319 /* station / ad-hoc / monitor scan */
2320 else if (!nl80211_get_mode(ifname, &mode) &&
2321 (mode == IWINFO_OPMODE_ADHOC ||
2322 mode == IWINFO_OPMODE_MASTER ||
2323 mode == IWINFO_OPMODE_CLIENT ||
2324 mode == IWINFO_OPMODE_MONITOR) &&
2325 iwinfo_ifup(ifname))
2327 return nl80211_get_scanlist_nl(ifname, buf, len);
2333 /* Got a temp interface, don't create yet another one */
2334 if (!strncmp(ifname, "tmp.", 4))
2336 if (!iwinfo_ifup(ifname))
2339 rv = nl80211_get_scanlist_nl(ifname, buf, len);
2340 iwinfo_ifdown(ifname);
2344 /* Spawn a new scan interface */
2347 if (!(res = nl80211_ifadd(ifname)))
2352 /* if we can take the new interface up, the driver supports an
2353 * additional interface and there's no need to tear down the ap */
2354 if (iwinfo_ifup(res))
2356 rv = nl80211_get_scanlist_nl(res, buf, len);
2360 /* driver cannot create secondary interface, take down ap
2362 else if (iwinfo_ifdown(ifname) && iwinfo_ifup(res))
2364 rv = nl80211_get_scanlist_nl(res, buf, len);
2366 iwinfo_ifup(ifname);
2367 nl80211_hostapd_hup(ifname);
2378 static int nl80211_get_freqlist_cb(struct nl_msg *msg, void *arg)
2380 int bands_remain, freqs_remain;
2382 struct nl80211_array_buf *arr = arg;
2383 struct iwinfo_freqlist_entry *e = arr->buf;
2385 struct nlattr **attr = nl80211_parse(msg);
2386 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
2387 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
2388 struct nlattr *band, *freq;
2390 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
2392 nla_parse(bands, NL80211_BAND_ATTR_MAX,
2393 nla_data(band), nla_len(band), NULL);
2395 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain)
2397 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
2398 nla_data(freq), nla_len(freq), NULL);
2400 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ] ||
2401 freqs[NL80211_FREQUENCY_ATTR_DISABLED])
2404 e->mhz = nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]);
2405 e->channel = nl80211_freq2channel(e->mhz);
2408 freqs[NL80211_FREQUENCY_ATTR_NO_IR] &&
2409 !freqs[NL80211_FREQUENCY_ATTR_RADAR]
2420 static int nl80211_get_freqlist(const char *ifname, char *buf, int *len)
2422 struct nl80211_msg_conveyor *req;
2423 struct nl80211_array_buf arr = { .buf = buf, .count = 0 };
2425 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
2428 nl80211_send(req, nl80211_get_freqlist_cb, &arr);
2434 *len = arr.count * sizeof(struct iwinfo_freqlist_entry);
2441 static int nl80211_get_country_cb(struct nl_msg *msg, void *arg)
2444 struct nlattr **attr = nl80211_parse(msg);
2446 if (attr[NL80211_ATTR_REG_ALPHA2])
2447 memcpy(buf, nla_data(attr[NL80211_ATTR_REG_ALPHA2]), 2);
2454 static int nl80211_get_country(const char *ifname, char *buf)
2457 struct nl80211_msg_conveyor *req;
2459 req = nl80211_msg(ifname, NL80211_CMD_GET_REG, 0);
2462 nl80211_send(req, nl80211_get_country_cb, buf);
2472 static int nl80211_get_countrylist(const char *ifname, char *buf, int *len)
2475 struct iwinfo_country_entry *e = (struct iwinfo_country_entry *)buf;
2476 const struct iwinfo_iso3166_label *l;
2478 for (l = IWINFO_ISO3166_NAMES, count = 0; l->iso3166; l++, e++, count++)
2480 e->iso3166 = l->iso3166;
2481 e->ccode[0] = (l->iso3166 / 256);
2482 e->ccode[1] = (l->iso3166 % 256);
2486 *len = (count * sizeof(struct iwinfo_country_entry));
2491 struct nl80211_modes
2498 static int nl80211_get_modelist_cb(struct nl_msg *msg, void *arg)
2500 struct nl80211_modes *m = arg;
2501 int bands_remain, freqs_remain;
2503 uint32_t vht_caps = 0;
2504 struct nlattr **attr = nl80211_parse(msg);
2505 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1];
2506 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1];
2507 struct nlattr *band, *freq;
2509 if (attr[NL80211_ATTR_WIPHY_BANDS])
2511 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
2513 nla_parse(bands, NL80211_BAND_ATTR_MAX,
2514 nla_data(band), nla_len(band), NULL);
2516 if (bands[NL80211_BAND_ATTR_HT_CAPA])
2517 caps = nla_get_u16(bands[NL80211_BAND_ATTR_HT_CAPA]);
2519 /* Treat any nonzero capability as 11n */
2522 m->hw |= IWINFO_80211_N;
2523 m->ht |= IWINFO_HTMODE_HT20;
2525 if (caps & (1 << 1))
2526 m->ht |= IWINFO_HTMODE_HT40;
2529 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS],
2532 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX,
2533 nla_data(freq), nla_len(freq), NULL);
2535 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ])
2538 if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) < 2485)
2540 m->hw |= IWINFO_80211_B;
2541 m->hw |= IWINFO_80211_G;
2543 else if (bands[NL80211_BAND_ATTR_VHT_CAPA])
2545 vht_caps = nla_get_u32(bands[NL80211_BAND_ATTR_VHT_CAPA]);
2547 /* Treat any nonzero capability as 11ac */
2550 m->hw |= IWINFO_80211_AC;
2551 m->ht |= IWINFO_HTMODE_VHT20 | IWINFO_HTMODE_VHT40 | IWINFO_HTMODE_VHT80;
2553 switch ((vht_caps >> 2) & 3)
2556 m->ht |= IWINFO_HTMODE_VHT80_80;
2560 m->ht |= IWINFO_HTMODE_VHT160;
2564 else if (!(m->hw & IWINFO_80211_AC))
2566 m->hw |= IWINFO_80211_A;
2577 static int nl80211_get_hwmodelist(const char *ifname, int *buf)
2579 struct nl80211_msg_conveyor *req;
2580 struct nl80211_modes m = { 0 };
2582 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
2585 nl80211_send(req, nl80211_get_modelist_cb, &m);
2598 static int nl80211_get_htmodelist(const char *ifname, int *buf)
2600 struct nl80211_msg_conveyor *req;
2601 struct nl80211_modes m = { 0 };
2603 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
2606 nl80211_send(req, nl80211_get_modelist_cb, &m);
2620 static int nl80211_get_ifcomb_cb(struct nl_msg *msg, void *arg)
2622 struct nlattr **attr = nl80211_parse(msg);
2623 struct nlattr *comb;
2625 int comb_rem, limit_rem, mode_rem;
2628 if (!attr[NL80211_ATTR_INTERFACE_COMBINATIONS])
2631 nla_for_each_nested(comb, attr[NL80211_ATTR_INTERFACE_COMBINATIONS], comb_rem)
2633 static struct nla_policy iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
2634 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
2635 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
2637 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB+1];
2638 static struct nla_policy iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
2639 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
2640 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
2642 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT+1];
2643 struct nlattr *limit;
2645 nla_parse_nested(tb_comb, NUM_NL80211_IFACE_COMB, comb, iface_combination_policy);
2647 if (!tb_comb[NL80211_IFACE_COMB_LIMITS])
2650 nla_for_each_nested(limit, tb_comb[NL80211_IFACE_COMB_LIMITS], limit_rem)
2652 struct nlattr *mode;
2654 nla_parse_nested(tb_limit, NUM_NL80211_IFACE_LIMIT, limit, iface_limit_policy);
2656 if (!tb_limit[NL80211_IFACE_LIMIT_TYPES] ||
2657 !tb_limit[NL80211_IFACE_LIMIT_MAX])
2660 if (nla_get_u32(tb_limit[NL80211_IFACE_LIMIT_MAX]) < 2)
2663 nla_for_each_nested(mode, tb_limit[NL80211_IFACE_LIMIT_TYPES], mode_rem) {
2664 if (nla_type(mode) == NL80211_IFTYPE_AP)
2673 static int nl80211_get_mbssid_support(const char *ifname, int *buf)
2675 struct nl80211_msg_conveyor *req;
2677 req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
2681 nl80211_send(req, nl80211_get_ifcomb_cb, buf);
2686 static int nl80211_get_hardware_id(const char *ifname, char *buf)
2691 /* Got a radioX pseudo interface, find some interface on it or create one */
2692 if (!strncmp(ifname, "radio", 5))
2694 /* Reuse existing interface */
2695 if ((res = nl80211_phy2ifname(ifname)) != NULL)
2697 rv = wext_ops.hardware_id(res, buf);
2700 /* Need to spawn a temporary iface for finding IDs */
2701 else if ((res = nl80211_ifadd(ifname)) != NULL)
2703 rv = wext_ops.hardware_id(res, buf);
2709 rv = wext_ops.hardware_id(ifname, buf);
2712 /* Failed to obtain hardware IDs, search board config */
2715 rv = iwinfo_hardware_id_from_mtd((struct iwinfo_hardware_id *)buf);
2721 static const struct iwinfo_hardware_entry *
2722 nl80211_get_hardware_entry(const char *ifname)
2724 struct iwinfo_hardware_id id;
2726 if (nl80211_get_hardware_id(ifname, (char *)&id))
2729 return iwinfo_hardware(&id);
2732 static int nl80211_get_hardware_name(const char *ifname, char *buf)
2734 const struct iwinfo_hardware_entry *hw;
2736 if (!(hw = nl80211_get_hardware_entry(ifname)))
2737 sprintf(buf, "Generic MAC80211");
2739 sprintf(buf, "%s %s", hw->vendor_name, hw->device_name);
2744 static int nl80211_get_txpower_offset(const char *ifname, int *buf)
2746 const struct iwinfo_hardware_entry *hw;
2748 if (!(hw = nl80211_get_hardware_entry(ifname)))
2751 *buf = hw->txpower_offset;
2755 static int nl80211_get_frequency_offset(const char *ifname, int *buf)
2757 const struct iwinfo_hardware_entry *hw;
2759 if (!(hw = nl80211_get_hardware_entry(ifname)))
2762 *buf = hw->frequency_offset;
2766 static int nl80211_lookup_phyname(const char *section, char *buf)
2770 if ((idx = nl80211_phy_idx_from_uci(section)) < 0)
2773 sprintf(buf, "phy%d", idx);
2777 const struct iwinfo_ops nl80211_ops = {
2779 .probe = nl80211_probe,
2780 .channel = nl80211_get_channel,
2781 .frequency = nl80211_get_frequency,
2782 .frequency_offset = nl80211_get_frequency_offset,
2783 .txpower = nl80211_get_txpower,
2784 .txpower_offset = nl80211_get_txpower_offset,
2785 .bitrate = nl80211_get_bitrate,
2786 .signal = nl80211_get_signal,
2787 .noise = nl80211_get_noise,
2788 .quality = nl80211_get_quality,
2789 .quality_max = nl80211_get_quality_max,
2790 .mbssid_support = nl80211_get_mbssid_support,
2791 .hwmodelist = nl80211_get_hwmodelist,
2792 .htmodelist = nl80211_get_htmodelist,
2793 .mode = nl80211_get_mode,
2794 .ssid = nl80211_get_ssid,
2795 .bssid = nl80211_get_bssid,
2796 .country = nl80211_get_country,
2797 .hardware_id = nl80211_get_hardware_id,
2798 .hardware_name = nl80211_get_hardware_name,
2799 .encryption = nl80211_get_encryption,
2800 .phyname = nl80211_get_phyname,
2801 .assoclist = nl80211_get_assoclist,
2802 .txpwrlist = nl80211_get_txpwrlist,
2803 .scanlist = nl80211_get_scanlist,
2804 .freqlist = nl80211_get_freqlist,
2805 .countrylist = nl80211_get_countrylist,
2806 .lookup_phy = nl80211_lookup_phyname,
2807 .close = nl80211_close