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
))
248 snprintf(buf
, sizeof(buf
), "/sys/devices/platform/%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 int nl80211_send(struct nl80211_msg_conveyor
*cv
,
373 int (*cb_func
)(struct nl_msg
*, void *),
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 err
= nl_send_auto_complete(nls
->nl_sock
, cv
->msg
);
391 nl_cb_err(cv
->cb
, NL_CB_CUSTOM
, nl80211_msg_error
, &err
);
392 nl_cb_set(cv
->cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, nl80211_msg_finish
, &err
);
393 nl_cb_set(cv
->cb
, NL_CB_ACK
, NL_CB_CUSTOM
, nl80211_msg_ack
, &err
);
396 nl_recvmsgs(nls
->nl_sock
, cv
->cb
);
403 static int nl80211_request(const char *ifname
, int cmd
, int flags
,
404 int (*cb_func
)(struct nl_msg
*, void *),
407 struct nl80211_msg_conveyor
*cv
;
409 cv
= nl80211_msg(ifname
, cmd
, flags
);
414 return nl80211_send(cv
, cb_func
, cb_arg
);
417 static struct nlattr
** nl80211_parse(struct nl_msg
*msg
)
419 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
420 static struct nlattr
*attr
[NL80211_ATTR_MAX
+ 1];
422 nla_parse(attr
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
423 genlmsg_attrlen(gnlh
, 0), NULL
);
429 static int nl80211_subscribe_cb(struct nl_msg
*msg
, void *arg
)
431 struct nl80211_group_conveyor
*cv
= arg
;
433 struct nlattr
**attr
= nl80211_parse(msg
);
434 struct nlattr
*mgrpinfo
[CTRL_ATTR_MCAST_GRP_MAX
+ 1];
438 if (!attr
[CTRL_ATTR_MCAST_GROUPS
])
441 nla_for_each_nested(mgrp
, attr
[CTRL_ATTR_MCAST_GROUPS
], mgrpidx
)
443 nla_parse(mgrpinfo
, CTRL_ATTR_MCAST_GRP_MAX
,
444 nla_data(mgrp
), nla_len(mgrp
), NULL
);
446 if (mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
] &&
447 mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
] &&
448 !strncmp(nla_data(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
]),
449 cv
->name
, nla_len(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
])))
451 cv
->id
= nla_get_u32(mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
]);
459 static int nl80211_subscribe(const char *family
, const char *group
)
461 struct nl80211_group_conveyor cv
= { .name
= group
, .id
= -ENOENT
};
462 struct nl80211_msg_conveyor
*req
;
465 req
= nl80211_ctl(CTRL_CMD_GETFAMILY
, 0);
468 NLA_PUT_STRING(req
->msg
, CTRL_ATTR_FAMILY_NAME
, family
);
469 err
= nl80211_send(req
, nl80211_subscribe_cb
, &cv
);
474 return nl_socket_add_membership(nls
->nl_sock
, cv
.id
);
484 static int nl80211_wait_cb(struct nl_msg
*msg
, void *arg
)
486 struct nl80211_event_conveyor
*cv
= arg
;
487 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
489 if (gnlh
->cmd
== cv
->wait
)
490 cv
->recv
= gnlh
->cmd
;
495 static int nl80211_wait_seq_check(struct nl_msg
*msg
, void *arg
)
500 static int nl80211_wait(const char *family
, const char *group
, int cmd
)
502 struct nl80211_event_conveyor cv
= { .wait
= cmd
};
506 if (nl80211_subscribe(family
, group
))
509 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
514 nl_cb_err(cb
, NL_CB_CUSTOM
, nl80211_msg_error
, &err
);
515 nl_cb_set(cb
, NL_CB_SEQ_CHECK
, NL_CB_CUSTOM
, nl80211_wait_seq_check
, NULL
);
516 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_wait_cb
, &cv
);
518 while (!cv
.recv
&& !err
)
519 nl_recvmsgs(nls
->nl_sock
, cb
);
527 static int nl80211_freq2channel(int freq
)
531 else if (freq
< 2484)
532 return (freq
- 2407) / 5;
533 else if (freq
>= 4910 && freq
<= 4980)
534 return (freq
- 4000) / 5;
536 return (freq
- 5000) / 5;
539 static int nl80211_channel2freq(int channel
, const char *band
)
541 if (!band
|| band
[0] != 'a')
545 else if (channel
< 14)
546 return (channel
* 5) + 2407;
550 if (channel
>= 182 && channel
<= 196)
551 return (channel
* 5) + 4000;
553 return (channel
* 5) + 5000;
559 static int nl80211_ifname2phy_cb(struct nl_msg
*msg
, void *arg
)
562 struct nlattr
**attr
= nl80211_parse(msg
);
564 if (attr
[NL80211_ATTR_WIPHY_NAME
])
565 memcpy(buf
, nla_data(attr
[NL80211_ATTR_WIPHY_NAME
]),
566 nla_len(attr
[NL80211_ATTR_WIPHY_NAME
]));
573 static char * nl80211_ifname2phy(const char *ifname
)
575 static char phy
[32] = { 0 };
577 memset(phy
, 0, sizeof(phy
));
579 nl80211_request(ifname
, NL80211_CMD_GET_WIPHY
, 0,
580 nl80211_ifname2phy_cb
, phy
);
582 return phy
[0] ? phy
: NULL
;
585 static char * nl80211_phy2ifname(const char *ifname
)
587 int ifidx
= -1, cifidx
= -1, phyidx
= -1;
589 static char nif
[IFNAMSIZ
] = { 0 };
594 /* Only accept phy name of the form phy%d or radio%d */
597 else if (!strncmp(ifname
, "phy", 3))
598 phyidx
= atoi(&ifname
[3]);
599 else if (!strncmp(ifname
, "radio", 5))
600 phyidx
= nl80211_phy_idx_from_uci(ifname
);
604 memset(nif
, 0, sizeof(nif
));
608 if ((d
= opendir("/sys/class/net")) != NULL
)
610 while ((e
= readdir(d
)) != NULL
)
612 snprintf(buffer
, sizeof(buffer
),
613 "/sys/class/net/%s/phy80211/index", e
->d_name
);
615 if (nl80211_readint(buffer
) == phyidx
)
617 snprintf(buffer
, sizeof(buffer
),
618 "/sys/class/net/%s/ifindex", e
->d_name
);
620 if ((cifidx
= nl80211_readint(buffer
)) >= 0 &&
621 ((ifidx
< 0) || (cifidx
< ifidx
)))
624 strncpy(nif
, e
->d_name
, sizeof(nif
) - 1);
633 return nif
[0] ? nif
: NULL
;
636 static int nl80211_get_mode_cb(struct nl_msg
*msg
, void *arg
)
639 struct nlattr
**tb
= nl80211_parse(msg
);
640 const int ifmodes
[NL80211_IFTYPE_MAX
+ 1] = {
641 IWINFO_OPMODE_UNKNOWN
, /* unspecified */
642 IWINFO_OPMODE_ADHOC
, /* IBSS */
643 IWINFO_OPMODE_CLIENT
, /* managed */
644 IWINFO_OPMODE_MASTER
, /* AP */
645 IWINFO_OPMODE_AP_VLAN
, /* AP/VLAN */
646 IWINFO_OPMODE_WDS
, /* WDS */
647 IWINFO_OPMODE_MONITOR
, /* monitor */
648 IWINFO_OPMODE_MESHPOINT
, /* mesh point */
649 IWINFO_OPMODE_P2P_CLIENT
, /* P2P-client */
650 IWINFO_OPMODE_P2P_GO
, /* P2P-GO */
653 if (tb
[NL80211_ATTR_IFTYPE
])
654 *mode
= ifmodes
[nla_get_u32(tb
[NL80211_ATTR_IFTYPE
])];
660 static int nl80211_get_mode(const char *ifname
, int *buf
)
664 *buf
= IWINFO_OPMODE_UNKNOWN
;
666 res
= nl80211_phy2ifname(ifname
);
668 nl80211_request(res
? res
: ifname
, NL80211_CMD_GET_INTERFACE
, 0,
669 nl80211_get_mode_cb
, buf
);
671 return (*buf
== IWINFO_OPMODE_UNKNOWN
) ? -1 : 0;
674 static int __nl80211_hostapd_query(const char *ifname
, ...)
677 char *phy
, *search
, *dest
, *key
, *val
, buf
[128];
678 int len
, mode
, found
= 0, match
= 1;
681 if (nl80211_get_mode(ifname
, &mode
))
684 if (mode
!= IWINFO_OPMODE_MASTER
&& mode
!= IWINFO_OPMODE_AP_VLAN
)
687 phy
= nl80211_ifname2phy(ifname
);
692 snprintf(buf
, sizeof(buf
), "/var/run/hostapd-%s.conf", phy
);
693 fp
= fopen(buf
, "r");
698 va_start(ap
, ifname
);
700 /* clear all destination buffers */
703 while ((search
= va_arg(ap_cur
, char *)) != NULL
)
705 dest
= va_arg(ap_cur
, char *);
706 len
= va_arg(ap_cur
, int);
708 memset(dest
, 0, len
);
713 /* iterate applicable lines and copy found values into dest buffers */
714 while (fgets(buf
, sizeof(buf
), fp
))
716 key
= strtok(buf
, " =\t\n");
717 val
= strtok(NULL
, "\n");
719 if (!key
|| !val
|| !*key
|| *key
== '#')
722 if (!strcmp(key
, "interface") || !strcmp(key
, "bss"))
723 match
= !strcmp(ifname
, val
);
730 while ((search
= va_arg(ap_cur
, char *)) != NULL
)
732 dest
= va_arg(ap_cur
, char *);
733 len
= va_arg(ap_cur
, int);
735 if (!strcmp(search
, key
))
737 strncpy(dest
, val
, len
- 1);
753 #define nl80211_hostapd_query(ifname, ...) \
754 __nl80211_hostapd_query(ifname, ##__VA_ARGS__, NULL)
757 static inline int nl80211_wpactl_recv(int sock
, char *buf
, int blen
)
760 struct timeval tv
= { 0, 256000 };
765 memset(buf
, 0, blen
);
767 if (select(sock
+ 1, &rfds
, NULL
, NULL
, &tv
) < 0)
770 if (!FD_ISSET(sock
, &rfds
))
773 return recv(sock
, buf
, blen
- 1, 0);
776 static int nl80211_wpactl_connect(const char *ifname
, struct sockaddr_un
*local
)
778 struct sockaddr_un remote
= { 0 };
779 size_t remote_length
, local_length
;
781 int sock
= socket(PF_UNIX
, SOCK_DGRAM
, 0);
785 remote
.sun_family
= AF_UNIX
;
786 remote_length
= sizeof(remote
.sun_family
) +
787 sprintf(remote
.sun_path
, "/var/run/wpa_supplicant-%s/%s",
790 if (fcntl(sock
, F_SETFD
, fcntl(sock
, F_GETFD
) | FD_CLOEXEC
) < 0)
796 if (connect(sock
, (struct sockaddr
*)&remote
, remote_length
))
798 remote_length
= sizeof(remote
.sun_family
) +
799 sprintf(remote
.sun_path
, "/var/run/wpa_supplicant/%s", ifname
);
801 if (connect(sock
, (struct sockaddr
*)&remote
, remote_length
))
808 local
->sun_family
= AF_UNIX
;
809 local_length
= sizeof(local
->sun_family
) +
810 sprintf(local
->sun_path
, "/var/run/iwinfo-%s-%d", ifname
, getpid());
812 if (bind(sock
, (struct sockaddr
*)local
, local_length
) < 0)
821 static int __nl80211_wpactl_query(const char *ifname
, ...)
824 struct sockaddr_un local
= { 0 };
825 int len
, mode
, found
= 0, sock
= -1;
826 char *search
, *dest
, *key
, *val
, *line
, *pos
, buf
[512];
828 if (nl80211_get_mode(ifname
, &mode
))
831 if (mode
!= IWINFO_OPMODE_CLIENT
&& mode
!= IWINFO_OPMODE_ADHOC
)
834 sock
= nl80211_wpactl_connect(ifname
, &local
);
839 va_start(ap
, ifname
);
841 /* clear all destination buffers */
844 while ((search
= va_arg(ap_cur
, char *)) != NULL
)
846 dest
= va_arg(ap_cur
, char *);
847 len
= va_arg(ap_cur
, int);
849 memset(dest
, 0, len
);
854 send(sock
, "STATUS", 6, 0);
858 if (nl80211_wpactl_recv(sock
, buf
, sizeof(buf
)) <= 0)
864 for (line
= strtok_r(buf
, "\n", &pos
);
866 line
= strtok_r(NULL
, "\n", &pos
))
868 key
= strtok(line
, "=");
869 val
= strtok(NULL
, "\n");
876 while ((search
= va_arg(ap_cur
, char *)) != NULL
)
878 dest
= va_arg(ap_cur
, char *);
879 len
= va_arg(ap_cur
, int);
881 if (!strcmp(search
, key
))
883 strncpy(dest
, val
, len
- 1);
898 unlink(local
.sun_path
);
903 #define nl80211_wpactl_query(ifname, ...) \
904 __nl80211_wpactl_query(ifname, ##__VA_ARGS__, NULL)
907 static char * nl80211_ifadd(const char *ifname
)
910 static char nif
[IFNAMSIZ
] = { 0 };
911 struct nl80211_msg_conveyor
*req
;
914 req
= nl80211_msg(ifname
, NL80211_CMD_NEW_INTERFACE
, 0);
917 snprintf(nif
, sizeof(nif
), "tmp.%s", ifname
);
919 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, nif
);
920 NLA_PUT_U32(req
->msg
, NL80211_ATTR_IFTYPE
, NL80211_IFTYPE_STATION
);
922 nl80211_send(req
, NULL
, NULL
);
924 snprintf(path
, sizeof(path
) - 1,
925 "/proc/sys/net/ipv6/conf/%s/disable_ipv6", nif
);
927 if ((sysfs
= fopen(path
, "w")) != NULL
)
929 fwrite("0\n", 1, 2, sysfs
);
942 static void nl80211_ifdel(const char *ifname
)
944 struct nl80211_msg_conveyor
*req
;
947 req
= nl80211_msg(ifname
, NL80211_CMD_DEL_INTERFACE
, 0);
950 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, ifname
);
952 nl80211_send(req
, NULL
, NULL
);
960 static void nl80211_hostapd_hup(const char *ifname
)
964 char *phy
= nl80211_ifname2phy(ifname
);
968 snprintf(buf
, sizeof(buf
), "/var/run/wifi-%s.pid", phy
);
969 if ((fd
= open(buf
, O_RDONLY
)) >= 0)
971 if (read(fd
, buf
, sizeof(buf
)) > 0)
983 static int nl80211_probe(const char *ifname
)
985 return !!nl80211_ifname2phy(ifname
);
988 struct nl80211_ssid_bssid
{
990 unsigned char bssid
[7];
993 static int nl80211_get_ssid_bssid_cb(struct nl_msg
*msg
, void *arg
)
997 struct nl80211_ssid_bssid
*sb
= arg
;
998 struct nlattr
**tb
= nl80211_parse(msg
);
999 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
1001 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
1002 [NL80211_BSS_INFORMATION_ELEMENTS
] = { 0 },
1003 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
1006 if (!tb
[NL80211_ATTR_BSS
] ||
1007 nla_parse_nested(bss
, NL80211_BSS_MAX
, tb
[NL80211_ATTR_BSS
],
1009 !bss
[NL80211_BSS_BSSID
] ||
1010 !bss
[NL80211_BSS_STATUS
] ||
1011 !bss
[NL80211_BSS_INFORMATION_ELEMENTS
])
1016 switch (nla_get_u32(bss
[NL80211_BSS_STATUS
]))
1018 case NL80211_BSS_STATUS_ASSOCIATED
:
1019 case NL80211_BSS_STATUS_AUTHENTICATED
:
1020 case NL80211_BSS_STATUS_IBSS_JOINED
:
1024 ie
= nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1025 ielen
= nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1027 while (ielen
>= 2 && ielen
>= ie
[1])
1031 memcpy(sb
->ssid
, ie
+ 2, min(ie
[1], IWINFO_ESSID_MAX_SIZE
));
1042 memcpy(sb
->bssid
+ 1, nla_data(bss
[NL80211_BSS_BSSID
]), 6);
1051 static int nl80211_get_ssid(const char *ifname
, char *buf
)
1054 struct nl80211_ssid_bssid sb
= { .ssid
= (unsigned char *)buf
};
1056 /* try to find ssid from scan dump results */
1057 res
= nl80211_phy2ifname(ifname
);
1060 nl80211_request(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
,
1061 nl80211_get_ssid_bssid_cb
, &sb
);
1063 /* failed, try to find from hostapd info */
1064 if (sb
.ssid
[0] == 0)
1065 nl80211_hostapd_query(ifname
, "ssid", sb
.ssid
,
1066 IWINFO_ESSID_MAX_SIZE
+ 1);
1068 return (sb
.ssid
[0] == 0) ? -1 : 0;
1071 static int nl80211_get_bssid(const char *ifname
, char *buf
)
1073 char *res
, bssid
[sizeof("FF:FF:FF:FF:FF:FF\0")];
1074 struct nl80211_ssid_bssid sb
= { };
1076 /* try to find bssid from scan dump results */
1077 res
= nl80211_phy2ifname(ifname
);
1079 nl80211_request(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
,
1080 nl80211_get_ssid_bssid_cb
, &sb
);
1082 /* failed, try to find mac from hostapd info */
1083 if ((sb
.bssid
[0] == 0) &&
1084 nl80211_hostapd_query(ifname
, "bssid", bssid
, sizeof(bssid
)))
1087 sb
.bssid
[1] = strtol(&bssid
[0], NULL
, 16);
1088 sb
.bssid
[2] = strtol(&bssid
[3], NULL
, 16);
1089 sb
.bssid
[3] = strtol(&bssid
[6], NULL
, 16);
1090 sb
.bssid
[4] = strtol(&bssid
[9], NULL
, 16);
1091 sb
.bssid
[5] = strtol(&bssid
[12], NULL
, 16);
1092 sb
.bssid
[6] = strtol(&bssid
[15], NULL
, 16);
1097 sprintf(buf
, "%02X:%02X:%02X:%02X:%02X:%02X",
1098 sb
.bssid
[1], sb
.bssid
[2], sb
.bssid
[3],
1099 sb
.bssid
[4], sb
.bssid
[5], sb
.bssid
[6]);
1108 static int nl80211_get_frequency_scan_cb(struct nl_msg
*msg
, void *arg
)
1111 struct nlattr
**attr
= nl80211_parse(msg
);
1112 struct nlattr
*binfo
[NL80211_BSS_MAX
+ 1];
1114 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
1115 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
1116 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
1119 if (attr
[NL80211_ATTR_BSS
] &&
1120 !nla_parse_nested(binfo
, NL80211_BSS_MAX
,
1121 attr
[NL80211_ATTR_BSS
], bss_policy
))
1123 if (binfo
[NL80211_BSS_STATUS
] && binfo
[NL80211_BSS_FREQUENCY
])
1124 *freq
= nla_get_u32(binfo
[NL80211_BSS_FREQUENCY
]);
1130 static int nl80211_get_frequency_info_cb(struct nl_msg
*msg
, void *arg
)
1133 struct nlattr
**tb
= nl80211_parse(msg
);
1135 if (tb
[NL80211_ATTR_WIPHY_FREQ
])
1136 *freq
= nla_get_u32(tb
[NL80211_ATTR_WIPHY_FREQ
]);
1141 static int nl80211_get_frequency(const char *ifname
, int *buf
)
1143 char *res
, channel
[4], hwmode
[2];
1145 /* try to find frequency from interface info */
1146 res
= nl80211_phy2ifname(ifname
);
1149 nl80211_request(res
? res
: ifname
, NL80211_CMD_GET_INTERFACE
, 0,
1150 nl80211_get_frequency_info_cb
, buf
);
1152 /* failed, try to find frequency from hostapd info */
1154 nl80211_hostapd_query(ifname
, "hw_mode", hwmode
, sizeof(hwmode
),
1155 "channel", channel
, sizeof(channel
)) == 2)
1157 *buf
= nl80211_channel2freq(atoi(channel
), hwmode
);
1160 /* failed, try to find frequency from scan results */
1163 res
= nl80211_phy2ifname(ifname
);
1165 nl80211_request(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
,
1166 nl80211_get_frequency_scan_cb
, buf
);
1169 return (*buf
== 0) ? -1 : 0;
1172 static int nl80211_get_channel(const char *ifname
, int *buf
)
1174 if (!nl80211_get_frequency(ifname
, buf
))
1176 *buf
= nl80211_freq2channel(*buf
);
1183 static int nl80211_get_txpower_cb(struct nl_msg
*msg
, void *arg
)
1186 struct nlattr
**tb
= nl80211_parse(msg
);
1188 if (tb
[NL80211_ATTR_WIPHY_TX_POWER_LEVEL
])
1189 *buf
= iwinfo_mbm2dbm(nla_get_u32(tb
[NL80211_ATTR_WIPHY_TX_POWER_LEVEL
]));
1194 static int nl80211_get_txpower(const char *ifname
, int *buf
)
1198 res
= nl80211_phy2ifname(ifname
);
1201 if (nl80211_request(res
? res
: ifname
, NL80211_CMD_GET_INTERFACE
, 0,
1202 nl80211_get_txpower_cb
, buf
))
1209 static int nl80211_fill_signal_cb(struct nl_msg
*msg
, void *arg
)
1213 struct nl80211_rssi_rate
*rr
= arg
;
1214 struct nlattr
**attr
= nl80211_parse(msg
);
1215 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1216 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
1218 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1219 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1220 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
1221 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
1222 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1223 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1224 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1225 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1226 [NL80211_STA_INFO_LLID
] = { .type
= NLA_U16
},
1227 [NL80211_STA_INFO_PLID
] = { .type
= NLA_U16
},
1228 [NL80211_STA_INFO_PLINK_STATE
] = { .type
= NLA_U8
},
1231 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
1232 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
1233 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
1234 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
1235 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
1238 if (attr
[NL80211_ATTR_STA_INFO
])
1240 if (!nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1241 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
1243 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
1245 dbm
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1246 rr
->rssi
= rr
->rssi
? (int8_t)((rr
->rssi
+ dbm
) / 2) : dbm
;
1249 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
])
1251 if (!nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1252 sinfo
[NL80211_STA_INFO_TX_BITRATE
],
1255 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
1257 mbit
= nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]);
1259 ? (int16_t)((rr
->rate
+ mbit
) / 2) : mbit
;
1269 static void nl80211_fill_signal(const char *ifname
, struct nl80211_rssi_rate
*r
)
1277 if ((d
= opendir("/sys/class/net")) != NULL
)
1279 while ((de
= readdir(d
)) != NULL
)
1281 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
1282 (!de
->d_name
[strlen(ifname
)] ||
1283 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
1285 nl80211_request(de
->d_name
, NL80211_CMD_GET_STATION
,
1286 NLM_F_DUMP
, nl80211_fill_signal_cb
, r
);
1294 static int nl80211_get_bitrate(const char *ifname
, int *buf
)
1296 struct nl80211_rssi_rate rr
;
1298 nl80211_fill_signal(ifname
, &rr
);
1302 *buf
= (rr
.rate
* 100);
1309 static int nl80211_get_signal(const char *ifname
, int *buf
)
1311 struct nl80211_rssi_rate rr
;
1313 nl80211_fill_signal(ifname
, &rr
);
1324 static int nl80211_get_noise_cb(struct nl_msg
*msg
, void *arg
)
1326 int8_t *noise
= arg
;
1327 struct nlattr
**tb
= nl80211_parse(msg
);
1328 struct nlattr
*si
[NL80211_SURVEY_INFO_MAX
+ 1];
1330 static struct nla_policy sp
[NL80211_SURVEY_INFO_MAX
+ 1] = {
1331 [NL80211_SURVEY_INFO_FREQUENCY
] = { .type
= NLA_U32
},
1332 [NL80211_SURVEY_INFO_NOISE
] = { .type
= NLA_U8
},
1335 if (!tb
[NL80211_ATTR_SURVEY_INFO
])
1338 if (nla_parse_nested(si
, NL80211_SURVEY_INFO_MAX
,
1339 tb
[NL80211_ATTR_SURVEY_INFO
], sp
))
1342 if (!si
[NL80211_SURVEY_INFO_NOISE
])
1345 if (!*noise
|| si
[NL80211_SURVEY_INFO_IN_USE
])
1346 *noise
= (int8_t)nla_get_u8(si
[NL80211_SURVEY_INFO_NOISE
]);
1352 static int nl80211_get_noise(const char *ifname
, int *buf
)
1356 if (nl80211_request(ifname
, NL80211_CMD_GET_SURVEY
, NLM_F_DUMP
,
1357 nl80211_get_noise_cb
, &noise
))
1368 static int nl80211_get_quality(const char *ifname
, int *buf
)
1372 if (!nl80211_get_signal(ifname
, &signal
))
1374 /* A positive signal level is usually just a quality
1375 * value, pass through as-is */
1381 /* The cfg80211 wext compat layer assumes a signal range
1382 * of -110 dBm to -40 dBm, the quality value is derived
1383 * by adding 110 to the signal level */
1388 else if (signal
> -40)
1391 *buf
= (signal
+ 110);
1400 static int nl80211_get_quality_max(const char *ifname
, int *buf
)
1402 /* The cfg80211 wext compat layer assumes a maximum
1409 static int nl80211_check_wepkey(const char *key
)
1413 switch (strlen(key
))
1417 return IWINFO_CIPHER_WEP40
;
1421 return IWINFO_CIPHER_WEP104
;
1428 static int nl80211_get_encryption(const char *ifname
, char *buf
)
1430 char wpa
[2], wpa_key_mgmt
[16], wpa_pairwise
[16], wpa_groupwise
[16];
1431 char auth_algs
[2], wep_key0
[27], wep_key1
[27], wep_key2
[27], wep_key3
[27];
1433 struct iwinfo_crypto_entry
*c
= (struct iwinfo_crypto_entry
*)buf
;
1435 /* WPA supplicant */
1436 if (nl80211_wpactl_query(ifname
,
1437 "pairwise_cipher", wpa_pairwise
, sizeof(wpa_pairwise
),
1438 "group_cipher", wpa_groupwise
, sizeof(wpa_groupwise
),
1439 "key_mgmt", wpa_key_mgmt
, sizeof(wpa_key_mgmt
)))
1442 if (!strcmp(wpa_key_mgmt
, "NONE"))
1444 if (strstr(wpa_pairwise
, "WEP-40"))
1445 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1446 else if (strstr(wpa_pairwise
, "WEP-104"))
1447 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1449 if (strstr(wpa_groupwise
, "WEP-40"))
1450 c
->group_ciphers
|= IWINFO_CIPHER_WEP40
;
1451 else if (strstr(wpa_groupwise
, "WEP-104"))
1452 c
->group_ciphers
|= IWINFO_CIPHER_WEP104
;
1454 c
->enabled
= !!(c
->pair_ciphers
| c
->group_ciphers
);
1455 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1456 c
->auth_algs
|= IWINFO_AUTH_OPEN
; /* XXX: assumption */
1460 else if (strstr(wpa_key_mgmt
, "WPA"))
1462 if (strstr(wpa_pairwise
, "TKIP"))
1463 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1464 else if (strstr(wpa_pairwise
, "CCMP"))
1465 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1466 else if (strstr(wpa_pairwise
, "NONE"))
1467 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1468 else if (strstr(wpa_pairwise
, "WEP-40"))
1469 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1470 else if (strstr(wpa_pairwise
, "WEP-104"))
1471 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1473 if (strstr(wpa_groupwise
, "TKIP"))
1474 c
->group_ciphers
|= IWINFO_CIPHER_TKIP
;
1475 else if (strstr(wpa_groupwise
, "CCMP"))
1476 c
->group_ciphers
|= IWINFO_CIPHER_CCMP
;
1477 else if (strstr(wpa_groupwise
, "NONE"))
1478 c
->group_ciphers
|= IWINFO_CIPHER_NONE
;
1479 else if (strstr(wpa_groupwise
, "WEP-40"))
1480 c
->group_ciphers
|= IWINFO_CIPHER_WEP40
;
1481 else if (strstr(wpa_groupwise
, "WEP-104"))
1482 c
->group_ciphers
|= IWINFO_CIPHER_WEP104
;
1484 if (strstr(wpa_key_mgmt
, "WPA2"))
1486 else if (strstr(wpa_key_mgmt
, "WPA"))
1489 if (strstr(wpa_key_mgmt
, "PSK"))
1490 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1491 else if (strstr(wpa_key_mgmt
, "EAP") ||
1492 strstr(wpa_key_mgmt
, "802.1X"))
1493 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1494 else if (strstr(wpa_key_mgmt
, "NONE"))
1495 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1497 c
->enabled
= !!(c
->wpa_version
&& c
->auth_suites
);
1504 else if (nl80211_hostapd_query(ifname
,
1505 "wpa", wpa
, sizeof(wpa
),
1506 "wpa_key_mgmt", wpa_key_mgmt
, sizeof(wpa_key_mgmt
),
1507 "wpa_pairwise", wpa_pairwise
, sizeof(wpa_pairwise
),
1508 "auth_algs", auth_algs
, sizeof(auth_algs
),
1509 "wep_key0", wep_key0
, sizeof(wep_key0
),
1510 "wep_key1", wep_key1
, sizeof(wep_key1
),
1511 "wep_key2", wep_key2
, sizeof(wep_key2
),
1512 "wep_key3", wep_key3
, sizeof(wep_key3
)))
1514 c
->wpa_version
= wpa
[0] ? atoi(wpa
) : 0;
1516 if (wpa_key_mgmt
[0])
1518 if (strstr(wpa_key_mgmt
, "PSK"))
1519 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1521 if (strstr(wpa_key_mgmt
, "EAP"))
1522 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1524 if (strstr(wpa_key_mgmt
, "NONE"))
1525 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1529 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1532 if (wpa_pairwise
[0])
1534 if (strstr(wpa_pairwise
, "TKIP"))
1535 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1537 if (strstr(wpa_pairwise
, "CCMP"))
1538 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1540 if (strstr(wpa_pairwise
, "NONE"))
1541 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1546 switch(atoi(auth_algs
))
1549 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1553 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1557 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1558 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1562 c
->pair_ciphers
|= nl80211_check_wepkey(wep_key0
);
1563 c
->pair_ciphers
|= nl80211_check_wepkey(wep_key1
);
1564 c
->pair_ciphers
|= nl80211_check_wepkey(wep_key2
);
1565 c
->pair_ciphers
|= nl80211_check_wepkey(wep_key3
);
1568 c
->group_ciphers
= c
->pair_ciphers
;
1569 c
->enabled
= (c
->wpa_version
|| c
->pair_ciphers
) ? 1 : 0;
1577 static int nl80211_get_phyname(const char *ifname
, char *buf
)
1581 name
= nl80211_ifname2phy(ifname
);
1588 else if ((name
= nl80211_phy2ifname(ifname
)) != NULL
)
1590 name
= nl80211_ifname2phy(name
);
1594 strcpy(buf
, ifname
);
1603 static void nl80211_parse_rateinfo(struct nlattr
**ri
,
1604 struct iwinfo_rate_entry
*re
)
1606 if (ri
[NL80211_RATE_INFO_BITRATE32
])
1607 re
->rate
= nla_get_u32(ri
[NL80211_RATE_INFO_BITRATE32
]) * 100;
1608 else if (ri
[NL80211_RATE_INFO_BITRATE
])
1609 re
->rate
= nla_get_u16(ri
[NL80211_RATE_INFO_BITRATE
]) * 100;
1611 if (ri
[NL80211_RATE_INFO_VHT_MCS
])
1614 re
->mcs
= nla_get_u8(ri
[NL80211_RATE_INFO_VHT_MCS
]);
1616 if (ri
[NL80211_RATE_INFO_VHT_NSS
])
1617 re
->nss
= nla_get_u8(ri
[NL80211_RATE_INFO_VHT_NSS
]);
1619 else if (ri
[NL80211_RATE_INFO_MCS
])
1622 re
->mcs
= nla_get_u8(ri
[NL80211_RATE_INFO_MCS
]);
1625 if (ri
[NL80211_RATE_INFO_5_MHZ_WIDTH
])
1627 else if (ri
[NL80211_RATE_INFO_10_MHZ_WIDTH
])
1629 else if (ri
[NL80211_RATE_INFO_40_MHZ_WIDTH
])
1631 else if (ri
[NL80211_RATE_INFO_80_MHZ_WIDTH
])
1633 else if (ri
[NL80211_RATE_INFO_80P80_MHZ_WIDTH
] ||
1634 ri
[NL80211_RATE_INFO_160_MHZ_WIDTH
])
1639 if (ri
[NL80211_RATE_INFO_SHORT_GI
])
1640 re
->is_short_gi
= 1;
1642 re
->is_40mhz
= (re
->mhz
== 40);
1645 static int nl80211_get_assoclist_cb(struct nl_msg
*msg
, void *arg
)
1647 struct nl80211_array_buf
*arr
= arg
;
1648 struct iwinfo_assoclist_entry
*e
= arr
->buf
;
1649 struct nlattr
**attr
= nl80211_parse(msg
);
1650 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1651 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
1652 struct nl80211_sta_flag_update
*sta_flags
;
1654 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1655 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1656 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1657 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1658 [NL80211_STA_INFO_RX_BITRATE
] = { .type
= NLA_NESTED
},
1659 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1660 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1661 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
1662 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
1663 [NL80211_STA_INFO_TX_RETRIES
] = { .type
= NLA_U32
},
1664 [NL80211_STA_INFO_TX_FAILED
] = { .type
= NLA_U32
},
1665 [NL80211_STA_INFO_T_OFFSET
] = { .type
= NLA_U64
},
1666 [NL80211_STA_INFO_STA_FLAGS
] =
1667 { .minlen
= sizeof(struct nl80211_sta_flag_update
) },
1670 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
1671 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
1672 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
1673 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
1674 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
1677 /* advance to end of array */
1679 memset(e
, 0, sizeof(*e
));
1681 if (attr
[NL80211_ATTR_MAC
])
1682 memcpy(e
->mac
, nla_data(attr
[NL80211_ATTR_MAC
]), 6);
1684 if (attr
[NL80211_ATTR_STA_INFO
] &&
1685 !nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1686 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
1688 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
1689 e
->signal
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1691 if (sinfo
[NL80211_STA_INFO_INACTIVE_TIME
])
1692 e
->inactive
= nla_get_u32(sinfo
[NL80211_STA_INFO_INACTIVE_TIME
]);
1694 if (sinfo
[NL80211_STA_INFO_RX_PACKETS
])
1695 e
->rx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_RX_PACKETS
]);
1697 if (sinfo
[NL80211_STA_INFO_TX_PACKETS
])
1698 e
->tx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_PACKETS
]);
1700 if (sinfo
[NL80211_STA_INFO_RX_BITRATE
] &&
1701 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1702 sinfo
[NL80211_STA_INFO_RX_BITRATE
], rate_policy
))
1703 nl80211_parse_rateinfo(rinfo
, &e
->rx_rate
);
1705 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
] &&
1706 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1707 sinfo
[NL80211_STA_INFO_TX_BITRATE
], rate_policy
))
1708 nl80211_parse_rateinfo(rinfo
, &e
->tx_rate
);
1710 if (sinfo
[NL80211_STA_INFO_RX_BYTES
])
1711 e
->rx_bytes
= nla_get_u32(sinfo
[NL80211_STA_INFO_RX_BYTES
]);
1713 if (sinfo
[NL80211_STA_INFO_TX_BYTES
])
1714 e
->tx_bytes
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_BYTES
]);
1716 if (sinfo
[NL80211_STA_INFO_TX_RETRIES
])
1717 e
->tx_retries
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_RETRIES
]);
1719 if (sinfo
[NL80211_STA_INFO_TX_FAILED
])
1720 e
->tx_failed
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_FAILED
]);
1722 if (sinfo
[NL80211_STA_INFO_T_OFFSET
])
1723 e
->t_offset
= nla_get_u64(sinfo
[NL80211_STA_INFO_T_OFFSET
]);
1726 if (sinfo
[NL80211_STA_INFO_STA_FLAGS
])
1728 sta_flags
= (struct nl80211_sta_flag_update
*)
1729 nla_data(sinfo
[NL80211_STA_INFO_STA_FLAGS
]);
1731 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_AUTHORIZED
) &&
1732 sta_flags
->set
& BIT(NL80211_STA_FLAG_AUTHORIZED
))
1733 e
->is_authorized
= 1;
1735 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_AUTHENTICATED
) &&
1736 sta_flags
->set
& BIT(NL80211_STA_FLAG_AUTHENTICATED
))
1737 e
->is_authenticated
= 1;
1739 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_SHORT_PREAMBLE
) &&
1740 sta_flags
->set
& BIT(NL80211_STA_FLAG_SHORT_PREAMBLE
))
1741 e
->is_preamble_short
= 1;
1743 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_WME
) &&
1744 sta_flags
->set
& BIT(NL80211_STA_FLAG_WME
))
1747 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_MFP
) &&
1748 sta_flags
->set
& BIT(NL80211_STA_FLAG_MFP
))
1751 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_TDLS_PEER
) &&
1752 sta_flags
->set
& BIT(NL80211_STA_FLAG_TDLS_PEER
))
1757 e
->noise
= 0; /* filled in by caller */
1763 static int nl80211_get_assoclist(const char *ifname
, char *buf
, int *len
)
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 nl80211_request(de
->d_name
, NL80211_CMD_GET_STATION
,
1780 NLM_F_DUMP
, nl80211_get_assoclist_cb
, &arr
);
1786 if (!nl80211_get_noise(ifname
, &noise
))
1787 for (i
= 0, e
= arr
.buf
; i
< arr
.count
; i
++, e
++)
1790 *len
= (arr
.count
* sizeof(struct iwinfo_assoclist_entry
));
1797 static int nl80211_get_txpwrlist_cb(struct nl_msg
*msg
, void *arg
)
1800 int ch_cur
, ch_cmp
, bands_remain
, freqs_remain
;
1802 struct nlattr
**attr
= nl80211_parse(msg
);
1803 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1804 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1805 struct nlattr
*band
, *freq
;
1807 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
1808 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
1809 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
1810 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
1811 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
1812 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
1813 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
1816 ch_cur
= *dbm_max
; /* value int* is initialized with channel by caller */
1819 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1821 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1822 nla_len(band
), NULL
);
1824 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1826 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1827 nla_data(freq
), nla_len(freq
), freq_policy
);
1829 ch_cmp
= nl80211_freq2channel(nla_get_u32(
1830 freqs
[NL80211_FREQUENCY_ATTR_FREQ
]));
1832 if ((!ch_cur
|| (ch_cmp
== ch_cur
)) &&
1833 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
])
1835 *dbm_max
= (int)(0.01 * nla_get_u32(
1836 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
]));
1846 static int nl80211_get_txpwrlist(const char *ifname
, char *buf
, int *len
)
1849 int dbm_max
= -1, dbm_cur
, dbm_cnt
;
1850 struct nl80211_msg_conveyor
*req
;
1851 struct iwinfo_txpwrlist_entry entry
;
1853 if (nl80211_get_channel(ifname
, &ch_cur
))
1856 /* initialize the value pointer with channel for callback */
1859 err
= nl80211_request(ifname
, NL80211_CMD_GET_WIPHY
, 0,
1860 nl80211_get_txpwrlist_cb
, &dbm_max
);
1864 for (dbm_cur
= 0, dbm_cnt
= 0;
1866 dbm_cur
++, dbm_cnt
++)
1868 entry
.dbm
= dbm_cur
;
1869 entry
.mw
= iwinfo_dbm2mw(dbm_cur
);
1871 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1874 entry
.dbm
= dbm_max
;
1875 entry
.mw
= iwinfo_dbm2mw(dbm_max
);
1877 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1880 *len
= dbm_cnt
* sizeof(entry
);
1887 static void nl80211_get_scancrypto(const char *spec
,
1888 struct iwinfo_crypto_entry
*c
)
1890 if (strstr(spec
, "WPA") || strstr(spec
, "WEP"))
1894 if (strstr(spec
, "WPA2-") && strstr(spec
, "WPA-"))
1897 else if (strstr(spec
, "WPA2"))
1900 else if (strstr(spec
, "WPA"))
1903 else if (strstr(spec
, "WEP"))
1904 c
->auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
1907 if (strstr(spec
, "PSK"))
1908 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1910 if (strstr(spec
, "802.1X") || strstr(spec
, "EAP"))
1911 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1913 if (strstr(spec
, "WPA-NONE"))
1914 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1917 if (strstr(spec
, "TKIP"))
1918 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1920 if (strstr(spec
, "CCMP"))
1921 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1923 if (strstr(spec
, "WEP-40"))
1924 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1926 if (strstr(spec
, "WEP-104"))
1927 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1929 c
->group_ciphers
= c
->pair_ciphers
;
1938 struct nl80211_scanlist
{
1939 struct iwinfo_scanlist_entry
*e
;
1944 static void nl80211_get_scanlist_ie(struct nlattr
**bss
,
1945 struct iwinfo_scanlist_entry
*e
)
1947 int ielen
= nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1948 unsigned char *ie
= nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1949 static unsigned char ms_oui
[3] = { 0x00, 0x50, 0xf2 };
1952 while (ielen
>= 2 && ielen
>= ie
[1])
1957 len
= min(ie
[1], IWINFO_ESSID_MAX_SIZE
);
1958 memcpy(e
->ssid
, ie
+ 2, len
);
1963 iwinfo_parse_rsn(&e
->crypto
, ie
+ 2, ie
[1],
1964 IWINFO_CIPHER_CCMP
, IWINFO_KMGMT_8021x
);
1967 case 221: /* Vendor */
1968 if (ie
[1] >= 4 && !memcmp(ie
+ 2, ms_oui
, 3) && ie
[5] == 1)
1969 iwinfo_parse_rsn(&e
->crypto
, ie
+ 6, ie
[1] - 4,
1970 IWINFO_CIPHER_TKIP
, IWINFO_KMGMT_PSK
);
1979 static int nl80211_get_scanlist_cb(struct nl_msg
*msg
, void *arg
)
1984 struct nl80211_scanlist
*sl
= arg
;
1985 struct nlattr
**tb
= nl80211_parse(msg
);
1986 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
1988 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
1989 [NL80211_BSS_TSF
] = { .type
= NLA_U64
},
1990 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
1991 [NL80211_BSS_BSSID
] = { 0 },
1992 [NL80211_BSS_BEACON_INTERVAL
] = { .type
= NLA_U16
},
1993 [NL80211_BSS_CAPABILITY
] = { .type
= NLA_U16
},
1994 [NL80211_BSS_INFORMATION_ELEMENTS
] = { 0 },
1995 [NL80211_BSS_SIGNAL_MBM
] = { .type
= NLA_U32
},
1996 [NL80211_BSS_SIGNAL_UNSPEC
] = { .type
= NLA_U8
},
1997 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
1998 [NL80211_BSS_SEEN_MS_AGO
] = { .type
= NLA_U32
},
1999 [NL80211_BSS_BEACON_IES
] = { 0 },
2002 if (!tb
[NL80211_ATTR_BSS
] ||
2003 nla_parse_nested(bss
, NL80211_BSS_MAX
, tb
[NL80211_ATTR_BSS
],
2005 !bss
[NL80211_BSS_BSSID
])
2010 if (bss
[NL80211_BSS_CAPABILITY
])
2011 caps
= nla_get_u16(bss
[NL80211_BSS_CAPABILITY
]);
2015 memset(sl
->e
, 0, sizeof(*sl
->e
));
2016 memcpy(sl
->e
->mac
, nla_data(bss
[NL80211_BSS_BSSID
]), 6);
2019 sl
->e
->mode
= IWINFO_OPMODE_ADHOC
;
2020 else if (caps
& (1<<0))
2021 sl
->e
->mode
= IWINFO_OPMODE_MASTER
;
2023 sl
->e
->mode
= IWINFO_OPMODE_MESHPOINT
;
2026 sl
->e
->crypto
.enabled
= 1;
2028 if (bss
[NL80211_BSS_FREQUENCY
])
2029 sl
->e
->channel
= nl80211_freq2channel(nla_get_u32(
2030 bss
[NL80211_BSS_FREQUENCY
]));
2032 if (bss
[NL80211_BSS_INFORMATION_ELEMENTS
])
2033 nl80211_get_scanlist_ie(bss
, sl
->e
);
2035 if (bss
[NL80211_BSS_SIGNAL_MBM
])
2038 (uint8_t)((int32_t)nla_get_u32(bss
[NL80211_BSS_SIGNAL_MBM
]) / 100);
2040 rssi
= sl
->e
->signal
- 0x100;
2044 else if (rssi
> -40)
2047 sl
->e
->quality
= (rssi
+ 110);
2048 sl
->e
->quality_max
= 70;
2051 if (sl
->e
->crypto
.enabled
&& !sl
->e
->crypto
.wpa_version
)
2053 sl
->e
->crypto
.auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
2054 sl
->e
->crypto
.pair_ciphers
= IWINFO_CIPHER_WEP40
| IWINFO_CIPHER_WEP104
;
2063 static int nl80211_get_scanlist_nl(const char *ifname
, char *buf
, int *len
)
2065 struct nl80211_scanlist sl
= { .e
= (struct iwinfo_scanlist_entry
*)buf
};
2067 if (nl80211_request(ifname
, NL80211_CMD_TRIGGER_SCAN
, 0, NULL
, NULL
))
2070 if (nl80211_wait("nl80211", "scan", NL80211_CMD_NEW_SCAN_RESULTS
))
2073 if (nl80211_request(ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
,
2074 nl80211_get_scanlist_cb
, &sl
))
2077 *len
= sl
.len
* sizeof(struct iwinfo_scanlist_entry
);
2085 static int wpasupp_ssid_decode(const char *in
, char *out
, int outlen
)
2088 (((x) >= 'a') ? ((x) - 'a' + 10) : \
2089 (((x) >= 'A') ? ((x) - 'A' + 10) : ((x) - '0')))
2095 if (len
+ 1 >= outlen
)
2105 out
[len
++] = '\n'; in
++;
2109 out
[len
++] = '\r'; in
++;
2113 out
[len
++] = '\t'; in
++;
2117 out
[len
++] = '\033'; in
++;
2121 if (isxdigit(*(in
+1)) && isxdigit(*(in
+2)))
2122 out
[len
++] = hex(*(in
+1)) * 16 + hex(*(in
+2));
2144 static int nl80211_get_scanlist_wpactl(const char *ifname
, char *buf
, int *len
)
2146 int sock
, qmax
, rssi
, tries
, count
= -1, ready
= 0;
2147 char *pos
, *line
, *bssid
, *freq
, *signal
, *flags
, *ssid
, reply
[4096];
2148 struct sockaddr_un local
= { 0 };
2149 struct iwinfo_scanlist_entry
*e
= (struct iwinfo_scanlist_entry
*)buf
;
2151 sock
= nl80211_wpactl_connect(ifname
, &local
);
2156 send(sock
, "ATTACH", 6, 0);
2157 send(sock
, "SCAN", 4, 0);
2160 * wait for scan results:
2161 * nl80211_wpactl_recv() will use a timeout of 256ms and we need to scan
2162 * 72 channels at most. We'll also receive two "OK" messages acknowledging
2163 * the "ATTACH" and "SCAN" commands and the driver might need a bit extra
2164 * time to process the results, so try 72 + 2 + 1 times.
2166 for (tries
= 0; tries
< 75; tries
++)
2168 if (nl80211_wpactl_recv(sock
, reply
, sizeof(reply
)) <= 0)
2171 /* got an event notification */
2172 if (reply
[0] == '<')
2174 /* scan results are ready */
2175 if (strstr(reply
, "CTRL-EVENT-SCAN-RESULTS"))
2177 /* send "SCAN_RESULTS" command */
2178 ready
= (send(sock
, "SCAN_RESULTS", 12, 0) == 12);
2182 /* is another unrelated event, retry */
2187 /* receive and parse scan results if the wait above didn't time out */
2188 if (ready
&& nl80211_wpactl_recv(sock
, reply
, sizeof(reply
)) > 0)
2190 nl80211_get_quality_max(ifname
, &qmax
);
2192 for (line
= strtok_r(reply
, "\n", &pos
);
2194 line
= strtok_r(NULL
, "\n", &pos
))
2196 /* skip header line */
2203 bssid
= strtok(line
, "\t");
2204 freq
= strtok(NULL
, "\t");
2205 signal
= strtok(NULL
, "\t");
2206 flags
= strtok(NULL
, "\t");
2207 ssid
= strtok(NULL
, "\n");
2209 if (!bssid
|| !freq
|| !signal
|| !flags
|| !ssid
)
2213 e
->mac
[0] = strtol(&bssid
[0], NULL
, 16);
2214 e
->mac
[1] = strtol(&bssid
[3], NULL
, 16);
2215 e
->mac
[2] = strtol(&bssid
[6], NULL
, 16);
2216 e
->mac
[3] = strtol(&bssid
[9], NULL
, 16);
2217 e
->mac
[4] = strtol(&bssid
[12], NULL
, 16);
2218 e
->mac
[5] = strtol(&bssid
[15], NULL
, 16);
2221 wpasupp_ssid_decode(ssid
, e
->ssid
, sizeof(e
->ssid
));
2224 if (strstr(flags
, "[MESH]"))
2225 e
->mode
= IWINFO_OPMODE_MESHPOINT
;
2226 else if (strstr(flags
, "[IBSS]"))
2227 e
->mode
= IWINFO_OPMODE_ADHOC
;
2229 e
->mode
= IWINFO_OPMODE_MASTER
;
2232 e
->channel
= nl80211_freq2channel(atoi(freq
));
2235 rssi
= atoi(signal
);
2241 /* The cfg80211 wext compat layer assumes a signal range
2242 * of -110 dBm to -40 dBm, the quality value is derived
2243 * by adding 110 to the signal level */
2246 else if (rssi
> -40)
2249 e
->quality
= (rssi
+ 110);
2257 e
->quality_max
= qmax
;
2260 nl80211_get_scancrypto(flags
, &e
->crypto
);
2266 *len
= count
* sizeof(struct iwinfo_scanlist_entry
);
2270 unlink(local
.sun_path
);
2272 return (count
>= 0) ? 0 : -1;
2275 static int nl80211_get_scanlist(const char *ifname
, char *buf
, int *len
)
2282 /* Got a radioX pseudo interface, find some interface on it or create one */
2283 if (!strncmp(ifname
, "radio", 5))
2285 /* Reuse existing interface */
2286 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
2288 return nl80211_get_scanlist(res
, buf
, len
);
2291 /* Need to spawn a temporary iface for scanning */
2292 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
2294 rv
= nl80211_get_scanlist(res
, buf
, len
);
2300 /* WPA supplicant */
2301 if (!nl80211_get_scanlist_wpactl(ifname
, buf
, len
))
2306 /* station / ad-hoc / monitor scan */
2307 else if (!nl80211_get_mode(ifname
, &mode
) &&
2308 (mode
== IWINFO_OPMODE_ADHOC
||
2309 mode
== IWINFO_OPMODE_MASTER
||
2310 mode
== IWINFO_OPMODE_CLIENT
||
2311 mode
== IWINFO_OPMODE_MONITOR
) &&
2312 iwinfo_ifup(ifname
))
2314 return nl80211_get_scanlist_nl(ifname
, buf
, len
);
2320 /* Got a temp interface, don't create yet another one */
2321 if (!strncmp(ifname
, "tmp.", 4))
2323 if (!iwinfo_ifup(ifname
))
2326 rv
= nl80211_get_scanlist_nl(ifname
, buf
, len
);
2327 iwinfo_ifdown(ifname
);
2331 /* Spawn a new scan interface */
2334 if (!(res
= nl80211_ifadd(ifname
)))
2339 /* if we can take the new interface up, the driver supports an
2340 * additional interface and there's no need to tear down the ap */
2341 if (iwinfo_ifup(res
))
2343 rv
= nl80211_get_scanlist_nl(res
, buf
, len
);
2347 /* driver cannot create secondary interface, take down ap
2349 else if (iwinfo_ifdown(ifname
) && iwinfo_ifup(res
))
2351 rv
= nl80211_get_scanlist_nl(res
, buf
, len
);
2353 iwinfo_ifup(ifname
);
2354 nl80211_hostapd_hup(ifname
);
2365 static int nl80211_get_freqlist_cb(struct nl_msg
*msg
, void *arg
)
2367 int bands_remain
, freqs_remain
;
2369 struct nl80211_array_buf
*arr
= arg
;
2370 struct iwinfo_freqlist_entry
*e
;
2372 struct nlattr
**attr
= nl80211_parse(msg
);
2373 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
2374 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
2375 struct nlattr
*band
, *freq
;
2380 if (attr
[NL80211_ATTR_WIPHY_BANDS
]) {
2381 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
2383 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
2384 nla_data(band
), nla_len(band
), NULL
);
2386 if (bands
[NL80211_BAND_ATTR_FREQS
]) {
2387 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
2389 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
2390 nla_data(freq
), nla_len(freq
), NULL
);
2392 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
] ||
2393 freqs
[NL80211_FREQUENCY_ATTR_DISABLED
])
2396 e
->mhz
= nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]);
2397 e
->channel
= nl80211_freq2channel(e
->mhz
);
2400 freqs
[NL80211_FREQUENCY_ATTR_NO_IR
] &&
2401 !freqs
[NL80211_FREQUENCY_ATTR_RADAR
]
2404 if (freqs
[NL80211_FREQUENCY_ATTR_NO_HT40_MINUS
])
2405 e
->flags
|= IWINFO_FREQ_NO_HT40MINUS
;
2406 if (freqs
[NL80211_FREQUENCY_ATTR_NO_HT40_PLUS
])
2407 e
->flags
|= IWINFO_FREQ_NO_HT40PLUS
;
2408 if (freqs
[NL80211_FREQUENCY_ATTR_NO_80MHZ
])
2409 e
->flags
|= IWINFO_FREQ_NO_80MHZ
;
2410 if (freqs
[NL80211_FREQUENCY_ATTR_NO_160MHZ
])
2411 e
->flags
|= IWINFO_FREQ_NO_160MHZ
;
2412 if (freqs
[NL80211_FREQUENCY_ATTR_NO_20MHZ
])
2413 e
->flags
|= IWINFO_FREQ_NO_20MHZ
;
2414 if (freqs
[NL80211_FREQUENCY_ATTR_NO_10MHZ
])
2415 e
->flags
|= IWINFO_FREQ_NO_10MHZ
;
2427 static int nl80211_get_freqlist(const char *ifname
, char *buf
, int *len
)
2429 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
2431 if (nl80211_request(ifname
, NL80211_CMD_GET_WIPHY
, 0,
2432 nl80211_get_freqlist_cb
, &arr
))
2435 *len
= arr
.count
* sizeof(struct iwinfo_freqlist_entry
);
2443 static int nl80211_get_country_cb(struct nl_msg
*msg
, void *arg
)
2446 struct nlattr
**attr
= nl80211_parse(msg
);
2448 if (attr
[NL80211_ATTR_REG_ALPHA2
])
2449 memcpy(buf
, nla_data(attr
[NL80211_ATTR_REG_ALPHA2
]), 2);
2456 static int nl80211_get_country(const char *ifname
, char *buf
)
2458 if (nl80211_request(ifname
, NL80211_CMD_GET_REG
, 0,
2459 nl80211_get_country_cb
, buf
))
2465 static int nl80211_get_countrylist(const char *ifname
, char *buf
, int *len
)
2468 struct iwinfo_country_entry
*e
= (struct iwinfo_country_entry
*)buf
;
2469 const struct iwinfo_iso3166_label
*l
;
2471 for (l
= IWINFO_ISO3166_NAMES
, count
= 0; l
->iso3166
; l
++, e
++, count
++)
2473 e
->iso3166
= l
->iso3166
;
2474 e
->ccode
[0] = (l
->iso3166
/ 256);
2475 e
->ccode
[1] = (l
->iso3166
% 256);
2479 *len
= (count
* sizeof(struct iwinfo_country_entry
));
2484 struct nl80211_modes
2491 static int nl80211_get_modelist_cb(struct nl_msg
*msg
, void *arg
)
2493 struct nl80211_modes
*m
= arg
;
2494 int bands_remain
, freqs_remain
;
2496 uint32_t vht_caps
= 0;
2497 struct nlattr
**attr
= nl80211_parse(msg
);
2498 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
2499 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
2500 struct nlattr
*band
, *freq
;
2502 if (attr
[NL80211_ATTR_WIPHY_BANDS
])
2504 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
2506 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
2507 nla_data(band
), nla_len(band
), NULL
);
2509 if (bands
[NL80211_BAND_ATTR_HT_CAPA
])
2510 caps
= nla_get_u16(bands
[NL80211_BAND_ATTR_HT_CAPA
]);
2512 /* Treat any nonzero capability as 11n */
2515 m
->hw
|= IWINFO_80211_N
;
2516 m
->ht
|= IWINFO_HTMODE_HT20
;
2518 if (caps
& (1 << 1))
2519 m
->ht
|= IWINFO_HTMODE_HT40
;
2522 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
],
2525 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
2526 nla_data(freq
), nla_len(freq
), NULL
);
2528 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
])
2531 if (nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]) < 2485)
2533 m
->hw
|= IWINFO_80211_B
;
2534 m
->hw
|= IWINFO_80211_G
;
2536 else if (bands
[NL80211_BAND_ATTR_VHT_CAPA
])
2538 vht_caps
= nla_get_u32(bands
[NL80211_BAND_ATTR_VHT_CAPA
]);
2540 /* Treat any nonzero capability as 11ac */
2543 m
->hw
|= IWINFO_80211_AC
;
2544 m
->ht
|= IWINFO_HTMODE_VHT20
| IWINFO_HTMODE_VHT40
| IWINFO_HTMODE_VHT80
;
2546 switch ((vht_caps
>> 2) & 3)
2549 m
->ht
|= IWINFO_HTMODE_VHT80_80
;
2553 m
->ht
|= IWINFO_HTMODE_VHT160
;
2557 else if (!(m
->hw
& IWINFO_80211_AC
))
2559 m
->hw
|= IWINFO_80211_A
;
2570 static int nl80211_get_hwmodelist(const char *ifname
, int *buf
)
2572 struct nl80211_modes m
= { 0 };
2574 if (nl80211_request(ifname
, NL80211_CMD_GET_WIPHY
, 0,
2575 nl80211_get_modelist_cb
, &m
))
2589 static int nl80211_get_htmodelist(const char *ifname
, int *buf
)
2591 struct nl80211_modes m
= { 0 };
2593 if (nl80211_request(ifname
, NL80211_CMD_GET_WIPHY
, 0,
2594 nl80211_get_modelist_cb
, &m
))
2609 static int nl80211_get_ifcomb_cb(struct nl_msg
*msg
, void *arg
)
2611 struct nlattr
**attr
= nl80211_parse(msg
);
2612 struct nlattr
*comb
;
2614 int comb_rem
, limit_rem
, mode_rem
;
2617 if (!attr
[NL80211_ATTR_INTERFACE_COMBINATIONS
])
2620 nla_for_each_nested(comb
, attr
[NL80211_ATTR_INTERFACE_COMBINATIONS
], comb_rem
)
2622 static struct nla_policy iface_combination_policy
[NUM_NL80211_IFACE_COMB
] = {
2623 [NL80211_IFACE_COMB_LIMITS
] = { .type
= NLA_NESTED
},
2624 [NL80211_IFACE_COMB_MAXNUM
] = { .type
= NLA_U32
},
2626 struct nlattr
*tb_comb
[NUM_NL80211_IFACE_COMB
+1];
2627 static struct nla_policy iface_limit_policy
[NUM_NL80211_IFACE_LIMIT
] = {
2628 [NL80211_IFACE_LIMIT_TYPES
] = { .type
= NLA_NESTED
},
2629 [NL80211_IFACE_LIMIT_MAX
] = { .type
= NLA_U32
},
2631 struct nlattr
*tb_limit
[NUM_NL80211_IFACE_LIMIT
+1];
2632 struct nlattr
*limit
;
2634 nla_parse_nested(tb_comb
, NUM_NL80211_IFACE_COMB
, comb
, iface_combination_policy
);
2636 if (!tb_comb
[NL80211_IFACE_COMB_LIMITS
])
2639 nla_for_each_nested(limit
, tb_comb
[NL80211_IFACE_COMB_LIMITS
], limit_rem
)
2641 struct nlattr
*mode
;
2643 nla_parse_nested(tb_limit
, NUM_NL80211_IFACE_LIMIT
, limit
, iface_limit_policy
);
2645 if (!tb_limit
[NL80211_IFACE_LIMIT_TYPES
] ||
2646 !tb_limit
[NL80211_IFACE_LIMIT_MAX
])
2649 if (nla_get_u32(tb_limit
[NL80211_IFACE_LIMIT_MAX
]) < 2)
2652 nla_for_each_nested(mode
, tb_limit
[NL80211_IFACE_LIMIT_TYPES
], mode_rem
) {
2653 if (nla_type(mode
) == NL80211_IFTYPE_AP
)
2662 static int nl80211_get_mbssid_support(const char *ifname
, int *buf
)
2664 if (nl80211_request(ifname
, NL80211_CMD_GET_WIPHY
, 0,
2665 nl80211_get_ifcomb_cb
, buf
))
2671 static int nl80211_get_hardware_id(const char *ifname
, char *buf
)
2676 /* Got a radioX pseudo interface, find some interface on it or create one */
2677 if (!strncmp(ifname
, "radio", 5))
2679 /* Reuse existing interface */
2680 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
2682 rv
= wext_ops
.hardware_id(res
, buf
);
2685 /* Need to spawn a temporary iface for finding IDs */
2686 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
2688 rv
= wext_ops
.hardware_id(res
, buf
);
2694 rv
= wext_ops
.hardware_id(ifname
, buf
);
2697 /* Failed to obtain hardware IDs, search board config */
2700 rv
= iwinfo_hardware_id_from_mtd((struct iwinfo_hardware_id
*)buf
);
2706 static const struct iwinfo_hardware_entry
*
2707 nl80211_get_hardware_entry(const char *ifname
)
2709 struct iwinfo_hardware_id id
;
2711 if (nl80211_get_hardware_id(ifname
, (char *)&id
))
2714 return iwinfo_hardware(&id
);
2717 static int nl80211_get_hardware_name(const char *ifname
, char *buf
)
2719 const struct iwinfo_hardware_entry
*hw
;
2721 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2722 sprintf(buf
, "Generic MAC80211");
2724 sprintf(buf
, "%s %s", hw
->vendor_name
, hw
->device_name
);
2729 static int nl80211_get_txpower_offset(const char *ifname
, int *buf
)
2731 const struct iwinfo_hardware_entry
*hw
;
2733 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2736 *buf
= hw
->txpower_offset
;
2740 static int nl80211_get_frequency_offset(const char *ifname
, int *buf
)
2742 const struct iwinfo_hardware_entry
*hw
;
2744 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2747 *buf
= hw
->frequency_offset
;
2751 static int nl80211_lookup_phyname(const char *section
, char *buf
)
2755 if ((idx
= nl80211_phy_idx_from_uci(section
)) < 0)
2758 sprintf(buf
, "phy%d", idx
);
2762 const struct iwinfo_ops nl80211_ops
= {
2764 .probe
= nl80211_probe
,
2765 .channel
= nl80211_get_channel
,
2766 .frequency
= nl80211_get_frequency
,
2767 .frequency_offset
= nl80211_get_frequency_offset
,
2768 .txpower
= nl80211_get_txpower
,
2769 .txpower_offset
= nl80211_get_txpower_offset
,
2770 .bitrate
= nl80211_get_bitrate
,
2771 .signal
= nl80211_get_signal
,
2772 .noise
= nl80211_get_noise
,
2773 .quality
= nl80211_get_quality
,
2774 .quality_max
= nl80211_get_quality_max
,
2775 .mbssid_support
= nl80211_get_mbssid_support
,
2776 .hwmodelist
= nl80211_get_hwmodelist
,
2777 .htmodelist
= nl80211_get_htmodelist
,
2778 .mode
= nl80211_get_mode
,
2779 .ssid
= nl80211_get_ssid
,
2780 .bssid
= nl80211_get_bssid
,
2781 .country
= nl80211_get_country
,
2782 .hardware_id
= nl80211_get_hardware_id
,
2783 .hardware_name
= nl80211_get_hardware_name
,
2784 .encryption
= nl80211_get_encryption
,
2785 .phyname
= nl80211_get_phyname
,
2786 .assoclist
= nl80211_get_assoclist
,
2787 .txpwrlist
= nl80211_get_txpwrlist
,
2788 .scanlist
= nl80211_get_scanlist
,
2789 .freqlist
= nl80211_get_freqlist
,
2790 .countrylist
= nl80211_get_countrylist
,
2791 .lookup_phy
= nl80211_lookup_phyname
,
2792 .close
= nl80211_close