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
);
389 nl_cb_err(cv
->cb
, NL_CB_CUSTOM
, nl80211_msg_error
, &err
);
390 nl_cb_set(cv
->cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, nl80211_msg_finish
, &err
);
391 nl_cb_set(cv
->cb
, NL_CB_ACK
, NL_CB_CUSTOM
, nl80211_msg_ack
, &err
);
394 nl_recvmsgs(nls
->nl_sock
, cv
->cb
);
400 static struct nlattr
** nl80211_parse(struct nl_msg
*msg
)
402 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
403 static struct nlattr
*attr
[NL80211_ATTR_MAX
+ 1];
405 nla_parse(attr
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
406 genlmsg_attrlen(gnlh
, 0), NULL
);
412 static int nl80211_subscribe_cb(struct nl_msg
*msg
, void *arg
)
414 struct nl80211_group_conveyor
*cv
= arg
;
416 struct nlattr
**attr
= nl80211_parse(msg
);
417 struct nlattr
*mgrpinfo
[CTRL_ATTR_MCAST_GRP_MAX
+ 1];
421 if (!attr
[CTRL_ATTR_MCAST_GROUPS
])
424 nla_for_each_nested(mgrp
, attr
[CTRL_ATTR_MCAST_GROUPS
], mgrpidx
)
426 nla_parse(mgrpinfo
, CTRL_ATTR_MCAST_GRP_MAX
,
427 nla_data(mgrp
), nla_len(mgrp
), NULL
);
429 if (mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
] &&
430 mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
] &&
431 !strncmp(nla_data(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
]),
432 cv
->name
, nla_len(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
])))
434 cv
->id
= nla_get_u32(mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
]);
442 static int nl80211_subscribe(const char *family
, const char *group
)
444 struct nl80211_group_conveyor cv
= { .name
= group
, .id
= -ENOENT
};
445 struct nl80211_msg_conveyor
*req
;
447 req
= nl80211_ctl(CTRL_CMD_GETFAMILY
, 0);
450 NLA_PUT_STRING(req
->msg
, CTRL_ATTR_FAMILY_NAME
, family
);
451 nl80211_send(req
, nl80211_subscribe_cb
, &cv
);
457 return nl_socket_add_membership(nls
->nl_sock
, cv
.id
);
461 static int nl80211_wait_cb(struct nl_msg
*msg
, void *arg
)
463 struct nl80211_event_conveyor
*cv
= arg
;
464 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
466 if (gnlh
->cmd
== cv
->wait
)
467 cv
->recv
= gnlh
->cmd
;
472 static int nl80211_wait_seq_check(struct nl_msg
*msg
, void *arg
)
477 static int nl80211_wait(const char *family
, const char *group
, int cmd
)
479 struct nl80211_event_conveyor cv
= { .wait
= cmd
};
483 if (nl80211_subscribe(family
, group
))
486 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
491 nl_cb_err(cb
, NL_CB_CUSTOM
, nl80211_msg_error
, &err
);
492 nl_cb_set(cb
, NL_CB_SEQ_CHECK
, NL_CB_CUSTOM
, nl80211_wait_seq_check
, NULL
);
493 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_wait_cb
, &cv
);
495 while (!cv
.recv
&& !err
)
496 nl_recvmsgs(nls
->nl_sock
, cb
);
504 static int nl80211_freq2channel(int freq
)
508 else if (freq
< 2484)
509 return (freq
- 2407) / 5;
510 else if (freq
>= 4910 && freq
<= 4980)
511 return (freq
- 4000) / 5;
513 return (freq
- 5000) / 5;
516 static int nl80211_channel2freq(int channel
, const char *band
)
518 if (!band
|| band
[0] != 'a')
522 else if (channel
< 14)
523 return (channel
* 5) + 2407;
527 if (channel
>= 182 && channel
<= 196)
528 return (channel
* 5) + 4000;
530 return (channel
* 5) + 5000;
536 static int nl80211_ifname2phy_cb(struct nl_msg
*msg
, void *arg
)
539 struct nlattr
**attr
= nl80211_parse(msg
);
541 if (attr
[NL80211_ATTR_WIPHY_NAME
])
542 memcpy(buf
, nla_data(attr
[NL80211_ATTR_WIPHY_NAME
]),
543 nla_len(attr
[NL80211_ATTR_WIPHY_NAME
]));
550 static char * nl80211_ifname2phy(const char *ifname
)
552 static char phy
[32] = { 0 };
553 struct nl80211_msg_conveyor
*req
;
555 memset(phy
, 0, sizeof(phy
));
557 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
560 nl80211_send(req
, nl80211_ifname2phy_cb
, phy
);
564 return phy
[0] ? phy
: NULL
;
567 static char * nl80211_phy2ifname(const char *ifname
)
569 int ifidx
= -1, cifidx
= -1, phyidx
= -1;
571 static char nif
[IFNAMSIZ
] = { 0 };
576 /* Only accept phy name of the form phy%d or radio%d */
579 else if (!strncmp(ifname
, "phy", 3))
580 phyidx
= atoi(&ifname
[3]);
581 else if (!strncmp(ifname
, "radio", 5))
582 phyidx
= nl80211_phy_idx_from_uci(ifname
);
586 memset(nif
, 0, sizeof(nif
));
590 if ((d
= opendir("/sys/class/net")) != NULL
)
592 while ((e
= readdir(d
)) != NULL
)
594 snprintf(buffer
, sizeof(buffer
),
595 "/sys/class/net/%s/phy80211/index", e
->d_name
);
597 if (nl80211_readint(buffer
) == phyidx
)
599 snprintf(buffer
, sizeof(buffer
),
600 "/sys/class/net/%s/ifindex", e
->d_name
);
602 if ((cifidx
= nl80211_readint(buffer
)) >= 0 &&
603 ((ifidx
< 0) || (cifidx
< ifidx
)))
606 strncpy(nif
, e
->d_name
, sizeof(nif
) - 1);
615 return nif
[0] ? nif
: NULL
;
618 static int nl80211_get_mode_cb(struct nl_msg
*msg
, void *arg
)
621 struct nlattr
**tb
= nl80211_parse(msg
);
622 const int ifmodes
[NL80211_IFTYPE_MAX
+ 1] = {
623 IWINFO_OPMODE_UNKNOWN
, /* unspecified */
624 IWINFO_OPMODE_ADHOC
, /* IBSS */
625 IWINFO_OPMODE_CLIENT
, /* managed */
626 IWINFO_OPMODE_MASTER
, /* AP */
627 IWINFO_OPMODE_AP_VLAN
, /* AP/VLAN */
628 IWINFO_OPMODE_WDS
, /* WDS */
629 IWINFO_OPMODE_MONITOR
, /* monitor */
630 IWINFO_OPMODE_MESHPOINT
, /* mesh point */
631 IWINFO_OPMODE_P2P_CLIENT
, /* P2P-client */
632 IWINFO_OPMODE_P2P_GO
, /* P2P-GO */
635 if (tb
[NL80211_ATTR_IFTYPE
])
636 *mode
= ifmodes
[nla_get_u32(tb
[NL80211_ATTR_IFTYPE
])];
642 static int nl80211_get_mode(const char *ifname
, int *buf
)
645 struct nl80211_msg_conveyor
*req
;
647 res
= nl80211_phy2ifname(ifname
);
648 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_INTERFACE
, 0);
649 *buf
= IWINFO_OPMODE_UNKNOWN
;
653 nl80211_send(req
, nl80211_get_mode_cb
, buf
);
657 return (*buf
== IWINFO_OPMODE_UNKNOWN
) ? -1 : 0;
660 static int __nl80211_hostapd_query(const char *ifname
, ...)
663 char *phy
, *search
, *dest
, *key
, *val
, buf
[128];
664 int len
, mode
, found
= 0, match
= 1;
667 if (nl80211_get_mode(ifname
, &mode
))
670 if (mode
!= IWINFO_OPMODE_MASTER
&& mode
!= IWINFO_OPMODE_AP_VLAN
)
673 phy
= nl80211_ifname2phy(ifname
);
678 snprintf(buf
, sizeof(buf
), "/var/run/hostapd-%s.conf", phy
);
679 fp
= fopen(buf
, "r");
684 va_start(ap
, ifname
);
686 /* clear all destination buffers */
689 while ((search
= va_arg(ap_cur
, char *)) != NULL
)
691 dest
= va_arg(ap_cur
, char *);
692 len
= va_arg(ap_cur
, int);
694 memset(dest
, 0, len
);
699 /* iterate applicable lines and copy found values into dest buffers */
700 while (fgets(buf
, sizeof(buf
), fp
))
702 key
= strtok(buf
, " =\t\n");
703 val
= strtok(NULL
, "\n");
705 if (!key
|| !val
|| !*key
|| *key
== '#')
708 if (!strcmp(key
, "interface") || !strcmp(key
, "bss"))
709 match
= !strcmp(ifname
, val
);
716 while ((search
= va_arg(ap_cur
, char *)) != NULL
)
718 dest
= va_arg(ap_cur
, char *);
719 len
= va_arg(ap_cur
, int);
721 if (!strcmp(search
, key
))
723 strncpy(dest
, val
, len
- 1);
739 #define nl80211_hostapd_query(ifname, ...) \
740 __nl80211_hostapd_query(ifname, ##__VA_ARGS__, NULL)
743 static inline int nl80211_wpactl_recv(int sock
, char *buf
, int blen
)
746 struct timeval tv
= { 0, 256000 };
751 memset(buf
, 0, blen
);
753 if (select(sock
+ 1, &rfds
, NULL
, NULL
, &tv
) < 0)
756 if (!FD_ISSET(sock
, &rfds
))
759 return recv(sock
, buf
, blen
- 1, 0);
762 static int nl80211_wpactl_connect(const char *ifname
, struct sockaddr_un
*local
)
764 struct sockaddr_un remote
= { 0 };
765 size_t remote_length
, local_length
;
767 int sock
= socket(PF_UNIX
, SOCK_DGRAM
, 0);
771 remote
.sun_family
= AF_UNIX
;
772 remote_length
= sizeof(remote
.sun_family
) +
773 sprintf(remote
.sun_path
, "/var/run/wpa_supplicant-%s/%s",
776 if (fcntl(sock
, F_SETFD
, fcntl(sock
, F_GETFD
) | FD_CLOEXEC
) < 0)
782 if (connect(sock
, (struct sockaddr
*)&remote
, remote_length
))
784 remote_length
= sizeof(remote
.sun_family
) +
785 sprintf(remote
.sun_path
, "/var/run/wpa_supplicant/%s", ifname
);
787 if (connect(sock
, (struct sockaddr
*)&remote
, remote_length
))
794 local
->sun_family
= AF_UNIX
;
795 local_length
= sizeof(local
->sun_family
) +
796 sprintf(local
->sun_path
, "/var/run/iwinfo-%s-%d", ifname
, getpid());
798 if (bind(sock
, (struct sockaddr
*)local
, local_length
) < 0)
807 static int __nl80211_wpactl_query(const char *ifname
, ...)
810 struct sockaddr_un local
= { 0 };
811 int len
, mode
, found
= 0, sock
= -1;
812 char *search
, *dest
, *key
, *val
, *line
, *pos
, buf
[512];
814 if (nl80211_get_mode(ifname
, &mode
))
817 if (mode
!= IWINFO_OPMODE_CLIENT
&& mode
!= IWINFO_OPMODE_ADHOC
)
820 sock
= nl80211_wpactl_connect(ifname
, &local
);
825 va_start(ap
, ifname
);
827 /* clear all destination buffers */
830 while ((search
= va_arg(ap_cur
, char *)) != NULL
)
832 dest
= va_arg(ap_cur
, char *);
833 len
= va_arg(ap_cur
, int);
835 memset(dest
, 0, len
);
840 send(sock
, "STATUS", 6, 0);
844 if (nl80211_wpactl_recv(sock
, buf
, sizeof(buf
)) <= 0)
850 for (line
= strtok_r(buf
, "\n", &pos
);
852 line
= strtok_r(NULL
, "\n", &pos
))
854 key
= strtok(line
, "=");
855 val
= strtok(NULL
, "\n");
862 while ((search
= va_arg(ap_cur
, char *)) != NULL
)
864 dest
= va_arg(ap_cur
, char *);
865 len
= va_arg(ap_cur
, int);
867 if (!strcmp(search
, key
))
869 strncpy(dest
, val
, len
- 1);
884 unlink(local
.sun_path
);
889 #define nl80211_wpactl_query(ifname, ...) \
890 __nl80211_wpactl_query(ifname, ##__VA_ARGS__, NULL)
893 static char * nl80211_ifadd(const char *ifname
)
895 char *rv
= NULL
, path
[PATH_MAX
];
896 static char nif
[IFNAMSIZ
] = { 0 };
897 struct nl80211_msg_conveyor
*req
;
900 req
= nl80211_msg(ifname
, NL80211_CMD_NEW_INTERFACE
, 0);
903 snprintf(nif
, sizeof(nif
), "tmp.%s", ifname
);
905 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, nif
);
906 NLA_PUT_U32(req
->msg
, NL80211_ATTR_IFTYPE
, NL80211_IFTYPE_STATION
);
908 nl80211_send(req
, NULL
, NULL
);
910 snprintf(path
, sizeof(path
) - 1,
911 "/proc/sys/net/ipv6/conf/%s/disable_ipv6", nif
);
913 if ((sysfs
= fopen(path
, "w")) != NULL
)
915 fwrite("0\n", 1, 2, sysfs
);
928 static void nl80211_ifdel(const char *ifname
)
930 struct nl80211_msg_conveyor
*req
;
932 req
= nl80211_msg(ifname
, NL80211_CMD_DEL_INTERFACE
, 0);
935 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, ifname
);
937 nl80211_send(req
, NULL
, NULL
);
944 static void nl80211_hostapd_hup(const char *ifname
)
948 char *phy
= nl80211_ifname2phy(ifname
);
952 snprintf(buf
, sizeof(buf
), "/var/run/wifi-%s.pid", phy
);
953 if ((fd
= open(buf
, O_RDONLY
)) >= 0)
955 if (read(fd
, buf
, sizeof(buf
)) > 0)
967 static int nl80211_probe(const char *ifname
)
969 return !!nl80211_ifname2phy(ifname
);
972 struct nl80211_ssid_bssid
{
974 unsigned char bssid
[7];
977 static int nl80211_get_ssid_bssid_cb(struct nl_msg
*msg
, void *arg
)
981 struct nl80211_ssid_bssid
*sb
= arg
;
982 struct nlattr
**tb
= nl80211_parse(msg
);
983 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
985 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
986 [NL80211_BSS_INFORMATION_ELEMENTS
] = { 0 },
987 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
990 if (!tb
[NL80211_ATTR_BSS
] ||
991 nla_parse_nested(bss
, NL80211_BSS_MAX
, tb
[NL80211_ATTR_BSS
],
993 !bss
[NL80211_BSS_BSSID
] ||
994 !bss
[NL80211_BSS_STATUS
] ||
995 !bss
[NL80211_BSS_INFORMATION_ELEMENTS
])
1000 switch (nla_get_u32(bss
[NL80211_BSS_STATUS
]))
1002 case NL80211_BSS_STATUS_ASSOCIATED
:
1003 case NL80211_BSS_STATUS_AUTHENTICATED
:
1004 case NL80211_BSS_STATUS_IBSS_JOINED
:
1008 ie
= nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1009 ielen
= nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1011 while (ielen
>= 2 && ielen
>= ie
[1])
1015 memcpy(sb
->ssid
, ie
+ 2, min(ie
[1], IWINFO_ESSID_MAX_SIZE
));
1026 memcpy(sb
->bssid
+ 1, nla_data(bss
[NL80211_BSS_BSSID
]), 6);
1035 static int nl80211_get_ssid(const char *ifname
, char *buf
)
1038 struct nl80211_msg_conveyor
*req
;
1039 struct nl80211_ssid_bssid sb
;
1041 /* try to find ssid from scan dump results */
1042 res
= nl80211_phy2ifname(ifname
);
1043 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
1045 sb
.ssid
= (unsigned char *)buf
;
1050 nl80211_send(req
, nl80211_get_ssid_bssid_cb
, &sb
);
1054 /* failed, try to find from hostapd info */
1056 nl80211_hostapd_query(ifname
, "ssid", buf
, IWINFO_ESSID_MAX_SIZE
+ 1);
1058 return (*buf
== 0) ? -1 : 0;
1061 static int nl80211_get_bssid(const char *ifname
, char *buf
)
1063 char *res
, bssid
[sizeof("FF:FF:FF:FF:FF:FF\0")];
1064 struct nl80211_msg_conveyor
*req
;
1065 struct nl80211_ssid_bssid sb
;
1067 /* try to find bssid from scan dump results */
1068 res
= nl80211_phy2ifname(ifname
);
1069 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
1076 nl80211_send(req
, nl80211_get_ssid_bssid_cb
, &sb
);
1080 /* failed, try to find mac from hostapd info */
1081 if ((sb
.bssid
[0] == 0) &&
1082 nl80211_hostapd_query(ifname
, "bssid", bssid
, sizeof(bssid
)))
1085 sb
.bssid
[1] = strtol(&bssid
[0], NULL
, 16);
1086 sb
.bssid
[2] = strtol(&bssid
[3], NULL
, 16);
1087 sb
.bssid
[3] = strtol(&bssid
[6], NULL
, 16);
1088 sb
.bssid
[4] = strtol(&bssid
[9], NULL
, 16);
1089 sb
.bssid
[5] = strtol(&bssid
[12], NULL
, 16);
1090 sb
.bssid
[6] = strtol(&bssid
[15], NULL
, 16);
1095 sprintf(buf
, "%02X:%02X:%02X:%02X:%02X:%02X",
1096 sb
.bssid
[1], sb
.bssid
[2], sb
.bssid
[3],
1097 sb
.bssid
[4], sb
.bssid
[5], sb
.bssid
[6]);
1106 static int nl80211_get_frequency_scan_cb(struct nl_msg
*msg
, void *arg
)
1109 struct nlattr
**attr
= nl80211_parse(msg
);
1110 struct nlattr
*binfo
[NL80211_BSS_MAX
+ 1];
1112 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
1113 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
1114 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
1117 if (attr
[NL80211_ATTR_BSS
] &&
1118 !nla_parse_nested(binfo
, NL80211_BSS_MAX
,
1119 attr
[NL80211_ATTR_BSS
], bss_policy
))
1121 if (binfo
[NL80211_BSS_STATUS
] && binfo
[NL80211_BSS_FREQUENCY
])
1122 *freq
= nla_get_u32(binfo
[NL80211_BSS_FREQUENCY
]);
1128 static int nl80211_get_frequency_info_cb(struct nl_msg
*msg
, void *arg
)
1131 struct nlattr
**tb
= nl80211_parse(msg
);
1133 if (tb
[NL80211_ATTR_WIPHY_FREQ
])
1134 *freq
= nla_get_u32(tb
[NL80211_ATTR_WIPHY_FREQ
]);
1139 static int nl80211_get_frequency(const char *ifname
, int *buf
)
1141 char *res
, channel
[4], hwmode
[2];
1142 struct nl80211_msg_conveyor
*req
;
1144 /* try to find frequency from interface info */
1145 res
= nl80211_phy2ifname(ifname
);
1146 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_INTERFACE
, 0);
1151 nl80211_send(req
, nl80211_get_frequency_info_cb
, buf
);
1155 /* failed, try to find frequency from hostapd info */
1157 nl80211_hostapd_query(ifname
, "hw_mode", hwmode
, sizeof(hwmode
),
1158 "channel", channel
, sizeof(channel
)) == 2)
1160 *buf
= nl80211_channel2freq(atoi(channel
), hwmode
);
1163 /* failed, try to find frequency from scan results */
1166 res
= nl80211_phy2ifname(ifname
);
1167 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
1171 nl80211_send(req
, nl80211_get_frequency_scan_cb
, buf
);
1176 return (*buf
== 0) ? -1 : 0;
1179 static int nl80211_get_channel(const char *ifname
, int *buf
)
1181 if (!nl80211_get_frequency(ifname
, buf
))
1183 *buf
= nl80211_freq2channel(*buf
);
1190 static int nl80211_get_txpower_cb(struct nl_msg
*msg
, void *arg
)
1193 struct nlattr
**tb
= nl80211_parse(msg
);
1195 if (tb
[NL80211_ATTR_WIPHY_TX_POWER_LEVEL
])
1196 *buf
= iwinfo_mbm2dbm(nla_get_u32(tb
[NL80211_ATTR_WIPHY_TX_POWER_LEVEL
]));
1201 static int nl80211_get_txpower(const char *ifname
, int *buf
)
1204 struct nl80211_msg_conveyor
*req
;
1206 res
= nl80211_phy2ifname(ifname
);
1207 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_INTERFACE
, 0);
1212 nl80211_send(req
, nl80211_get_txpower_cb
, buf
);
1222 static int nl80211_fill_signal_cb(struct nl_msg
*msg
, void *arg
)
1226 struct nl80211_rssi_rate
*rr
= arg
;
1227 struct nlattr
**attr
= nl80211_parse(msg
);
1228 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1229 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
1231 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1232 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1233 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
1234 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
1235 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1236 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1237 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1238 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1239 [NL80211_STA_INFO_LLID
] = { .type
= NLA_U16
},
1240 [NL80211_STA_INFO_PLID
] = { .type
= NLA_U16
},
1241 [NL80211_STA_INFO_PLINK_STATE
] = { .type
= NLA_U8
},
1244 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
1245 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
1246 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
1247 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
1248 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
1251 if (attr
[NL80211_ATTR_STA_INFO
])
1253 if (!nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1254 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
1256 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
1258 dbm
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1259 rr
->rssi
= rr
->rssi
? (int8_t)((rr
->rssi
+ dbm
) / 2) : dbm
;
1262 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
])
1264 if (!nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1265 sinfo
[NL80211_STA_INFO_TX_BITRATE
],
1268 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
1270 mbit
= nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]);
1272 ? (int16_t)((rr
->rate
+ mbit
) / 2) : mbit
;
1282 static void nl80211_fill_signal(const char *ifname
, struct nl80211_rssi_rate
*r
)
1286 struct nl80211_msg_conveyor
*req
;
1291 if ((d
= opendir("/sys/class/net")) != NULL
)
1293 while ((de
= readdir(d
)) != NULL
)
1295 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
1296 (!de
->d_name
[strlen(ifname
)] ||
1297 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
1299 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
1304 nl80211_send(req
, nl80211_fill_signal_cb
, r
);
1314 static int nl80211_get_bitrate(const char *ifname
, int *buf
)
1316 struct nl80211_rssi_rate rr
;
1318 nl80211_fill_signal(ifname
, &rr
);
1322 *buf
= (rr
.rate
* 100);
1329 static int nl80211_get_signal(const char *ifname
, int *buf
)
1331 struct nl80211_rssi_rate rr
;
1333 nl80211_fill_signal(ifname
, &rr
);
1344 static int nl80211_get_noise_cb(struct nl_msg
*msg
, void *arg
)
1346 int8_t *noise
= arg
;
1347 struct nlattr
**tb
= nl80211_parse(msg
);
1348 struct nlattr
*si
[NL80211_SURVEY_INFO_MAX
+ 1];
1350 static struct nla_policy sp
[NL80211_SURVEY_INFO_MAX
+ 1] = {
1351 [NL80211_SURVEY_INFO_FREQUENCY
] = { .type
= NLA_U32
},
1352 [NL80211_SURVEY_INFO_NOISE
] = { .type
= NLA_U8
},
1355 if (!tb
[NL80211_ATTR_SURVEY_INFO
])
1358 if (nla_parse_nested(si
, NL80211_SURVEY_INFO_MAX
,
1359 tb
[NL80211_ATTR_SURVEY_INFO
], sp
))
1362 if (!si
[NL80211_SURVEY_INFO_NOISE
])
1365 if (!*noise
|| si
[NL80211_SURVEY_INFO_IN_USE
])
1366 *noise
= (int8_t)nla_get_u8(si
[NL80211_SURVEY_INFO_NOISE
]);
1372 static int nl80211_get_noise(const char *ifname
, int *buf
)
1375 struct nl80211_msg_conveyor
*req
;
1377 req
= nl80211_msg(ifname
, NL80211_CMD_GET_SURVEY
, NLM_F_DUMP
);
1382 nl80211_send(req
, nl80211_get_noise_cb
, &noise
);
1395 static int nl80211_get_quality(const char *ifname
, int *buf
)
1399 if (!nl80211_get_signal(ifname
, &signal
))
1401 /* A positive signal level is usually just a quality
1402 * value, pass through as-is */
1408 /* The cfg80211 wext compat layer assumes a signal range
1409 * of -110 dBm to -40 dBm, the quality value is derived
1410 * by adding 110 to the signal level */
1415 else if (signal
> -40)
1418 *buf
= (signal
+ 110);
1427 static int nl80211_get_quality_max(const char *ifname
, int *buf
)
1429 /* The cfg80211 wext compat layer assumes a maximum
1436 static int nl80211_check_wepkey(const char *key
)
1440 switch (strlen(key
))
1444 return IWINFO_CIPHER_WEP40
;
1448 return IWINFO_CIPHER_WEP104
;
1455 static int nl80211_get_encryption(const char *ifname
, char *buf
)
1457 char wpa
[2], wpa_key_mgmt
[16], wpa_pairwise
[16], wpa_groupwise
[16];
1458 char auth_algs
[2], wep_key0
[27], wep_key1
[27], wep_key2
[27], wep_key3
[27];
1460 struct iwinfo_crypto_entry
*c
= (struct iwinfo_crypto_entry
*)buf
;
1462 /* WPA supplicant */
1463 if (nl80211_wpactl_query(ifname
,
1464 "pairwise_cipher", wpa_pairwise
, sizeof(wpa_pairwise
),
1465 "group_cipher", wpa_groupwise
, sizeof(wpa_groupwise
),
1466 "key_mgmt", wpa_key_mgmt
, sizeof(wpa_key_mgmt
)))
1469 if (!strcmp(wpa_key_mgmt
, "NONE"))
1471 if (strstr(wpa_pairwise
, "WEP-40"))
1472 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1473 else if (strstr(wpa_pairwise
, "WEP-104"))
1474 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1476 if (strstr(wpa_groupwise
, "WEP-40"))
1477 c
->group_ciphers
|= IWINFO_CIPHER_WEP40
;
1478 else if (strstr(wpa_groupwise
, "WEP-104"))
1479 c
->group_ciphers
|= IWINFO_CIPHER_WEP104
;
1481 c
->enabled
= !!(c
->pair_ciphers
| c
->group_ciphers
);
1482 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1483 c
->auth_algs
|= IWINFO_AUTH_OPEN
; /* XXX: assumption */
1487 else if (strstr(wpa_key_mgmt
, "WPA"))
1489 if (strstr(wpa_pairwise
, "TKIP"))
1490 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1491 else if (strstr(wpa_pairwise
, "CCMP"))
1492 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1493 else if (strstr(wpa_pairwise
, "NONE"))
1494 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1495 else if (strstr(wpa_pairwise
, "WEP-40"))
1496 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1497 else if (strstr(wpa_pairwise
, "WEP-104"))
1498 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1500 if (strstr(wpa_groupwise
, "TKIP"))
1501 c
->group_ciphers
|= IWINFO_CIPHER_TKIP
;
1502 else if (strstr(wpa_groupwise
, "CCMP"))
1503 c
->group_ciphers
|= IWINFO_CIPHER_CCMP
;
1504 else if (strstr(wpa_groupwise
, "NONE"))
1505 c
->group_ciphers
|= IWINFO_CIPHER_NONE
;
1506 else if (strstr(wpa_groupwise
, "WEP-40"))
1507 c
->group_ciphers
|= IWINFO_CIPHER_WEP40
;
1508 else if (strstr(wpa_groupwise
, "WEP-104"))
1509 c
->group_ciphers
|= IWINFO_CIPHER_WEP104
;
1511 if (strstr(wpa_key_mgmt
, "WPA2"))
1513 else if (strstr(wpa_key_mgmt
, "WPA"))
1516 if (strstr(wpa_key_mgmt
, "PSK"))
1517 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1518 else if (strstr(wpa_key_mgmt
, "EAP") ||
1519 strstr(wpa_key_mgmt
, "802.1X"))
1520 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1521 else if (strstr(wpa_key_mgmt
, "NONE"))
1522 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1524 c
->enabled
= !!(c
->wpa_version
&& c
->auth_suites
);
1531 else if (nl80211_hostapd_query(ifname
,
1532 "wpa", wpa
, sizeof(wpa
),
1533 "wpa_key_mgmt", wpa_key_mgmt
, sizeof(wpa_key_mgmt
),
1534 "wpa_pairwise", wpa_pairwise
, sizeof(wpa_pairwise
),
1535 "auth_algs", auth_algs
, sizeof(auth_algs
),
1536 "wep_key0", wep_key0
, sizeof(wep_key0
),
1537 "wep_key1", wep_key1
, sizeof(wep_key1
),
1538 "wep_key2", wep_key2
, sizeof(wep_key2
),
1539 "wep_key3", wep_key3
, sizeof(wep_key3
)))
1541 c
->wpa_version
= wpa
[0] ? atoi(wpa
) : 0;
1543 if (wpa_key_mgmt
[0])
1545 if (strstr(wpa_key_mgmt
, "PSK"))
1546 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1548 if (strstr(wpa_key_mgmt
, "EAP"))
1549 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1551 if (strstr(wpa_key_mgmt
, "NONE"))
1552 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1556 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1559 if (wpa_pairwise
[0])
1561 if (strstr(wpa_pairwise
, "TKIP"))
1562 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1564 if (strstr(wpa_pairwise
, "CCMP"))
1565 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1567 if (strstr(wpa_pairwise
, "NONE"))
1568 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1573 switch(atoi(auth_algs
))
1576 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1580 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1584 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1585 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1589 c
->pair_ciphers
|= nl80211_check_wepkey(wep_key0
);
1590 c
->pair_ciphers
|= nl80211_check_wepkey(wep_key1
);
1591 c
->pair_ciphers
|= nl80211_check_wepkey(wep_key2
);
1592 c
->pair_ciphers
|= nl80211_check_wepkey(wep_key3
);
1595 c
->group_ciphers
= c
->pair_ciphers
;
1596 c
->enabled
= (c
->wpa_version
|| c
->pair_ciphers
) ? 1 : 0;
1604 static int nl80211_get_phyname(const char *ifname
, char *buf
)
1608 name
= nl80211_ifname2phy(ifname
);
1615 else if ((name
= nl80211_phy2ifname(ifname
)) != NULL
)
1617 name
= nl80211_ifname2phy(name
);
1621 strcpy(buf
, ifname
);
1630 static void nl80211_parse_rateinfo(struct nlattr
**ri
,
1631 struct iwinfo_rate_entry
*re
)
1633 if (ri
[NL80211_RATE_INFO_BITRATE32
])
1634 re
->rate
= nla_get_u32(ri
[NL80211_RATE_INFO_BITRATE32
]) * 100;
1635 else if (ri
[NL80211_RATE_INFO_BITRATE
])
1636 re
->rate
= nla_get_u16(ri
[NL80211_RATE_INFO_BITRATE
]) * 100;
1638 if (ri
[NL80211_RATE_INFO_VHT_MCS
])
1641 re
->mcs
= nla_get_u8(ri
[NL80211_RATE_INFO_VHT_MCS
]);
1643 if (ri
[NL80211_RATE_INFO_VHT_NSS
])
1644 re
->nss
= nla_get_u8(ri
[NL80211_RATE_INFO_VHT_NSS
]);
1646 else if (ri
[NL80211_RATE_INFO_MCS
])
1649 re
->mcs
= nla_get_u8(ri
[NL80211_RATE_INFO_MCS
]);
1652 if (ri
[NL80211_RATE_INFO_5_MHZ_WIDTH
])
1654 else if (ri
[NL80211_RATE_INFO_10_MHZ_WIDTH
])
1656 else if (ri
[NL80211_RATE_INFO_40_MHZ_WIDTH
])
1658 else if (ri
[NL80211_RATE_INFO_80_MHZ_WIDTH
])
1660 else if (ri
[NL80211_RATE_INFO_80P80_MHZ_WIDTH
] ||
1661 ri
[NL80211_RATE_INFO_160_MHZ_WIDTH
])
1666 if (ri
[NL80211_RATE_INFO_SHORT_GI
])
1667 re
->is_short_gi
= 1;
1669 re
->is_40mhz
= (re
->mhz
== 40);
1672 static int nl80211_get_assoclist_cb(struct nl_msg
*msg
, void *arg
)
1674 struct nl80211_array_buf
*arr
= arg
;
1675 struct iwinfo_assoclist_entry
*e
= arr
->buf
;
1676 struct nlattr
**attr
= nl80211_parse(msg
);
1677 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1678 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
1679 struct nl80211_sta_flag_update
*sta_flags
;
1681 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1682 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1683 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1684 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1685 [NL80211_STA_INFO_RX_BITRATE
] = { .type
= NLA_NESTED
},
1686 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1687 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1688 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
1689 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
1690 [NL80211_STA_INFO_TX_RETRIES
] = { .type
= NLA_U32
},
1691 [NL80211_STA_INFO_TX_FAILED
] = { .type
= NLA_U32
},
1692 [NL80211_STA_INFO_T_OFFSET
] = { .type
= NLA_U64
},
1693 [NL80211_STA_INFO_STA_FLAGS
] =
1694 { .minlen
= sizeof(struct nl80211_sta_flag_update
) },
1697 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
1698 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
1699 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
1700 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
1701 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
1704 /* advance to end of array */
1706 memset(e
, 0, sizeof(*e
));
1708 if (attr
[NL80211_ATTR_MAC
])
1709 memcpy(e
->mac
, nla_data(attr
[NL80211_ATTR_MAC
]), 6);
1711 if (attr
[NL80211_ATTR_STA_INFO
] &&
1712 !nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1713 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
1715 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
1716 e
->signal
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1718 if (sinfo
[NL80211_STA_INFO_INACTIVE_TIME
])
1719 e
->inactive
= nla_get_u32(sinfo
[NL80211_STA_INFO_INACTIVE_TIME
]);
1721 if (sinfo
[NL80211_STA_INFO_RX_PACKETS
])
1722 e
->rx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_RX_PACKETS
]);
1724 if (sinfo
[NL80211_STA_INFO_TX_PACKETS
])
1725 e
->tx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_PACKETS
]);
1727 if (sinfo
[NL80211_STA_INFO_RX_BITRATE
] &&
1728 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1729 sinfo
[NL80211_STA_INFO_RX_BITRATE
], rate_policy
))
1730 nl80211_parse_rateinfo(rinfo
, &e
->rx_rate
);
1732 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
] &&
1733 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1734 sinfo
[NL80211_STA_INFO_TX_BITRATE
], rate_policy
))
1735 nl80211_parse_rateinfo(rinfo
, &e
->tx_rate
);
1737 if (sinfo
[NL80211_STA_INFO_RX_BYTES
])
1738 e
->rx_bytes
= nla_get_u32(sinfo
[NL80211_STA_INFO_RX_BYTES
]);
1740 if (sinfo
[NL80211_STA_INFO_TX_BYTES
])
1741 e
->tx_bytes
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_BYTES
]);
1743 if (sinfo
[NL80211_STA_INFO_TX_RETRIES
])
1744 e
->tx_retries
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_RETRIES
]);
1746 if (sinfo
[NL80211_STA_INFO_TX_FAILED
])
1747 e
->tx_failed
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_FAILED
]);
1749 if (sinfo
[NL80211_STA_INFO_T_OFFSET
])
1750 e
->t_offset
= nla_get_u64(sinfo
[NL80211_STA_INFO_T_OFFSET
]);
1753 if (sinfo
[NL80211_STA_INFO_STA_FLAGS
])
1755 sta_flags
= (struct nl80211_sta_flag_update
*)
1756 nla_data(sinfo
[NL80211_STA_INFO_STA_FLAGS
]);
1758 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_AUTHORIZED
) &&
1759 sta_flags
->set
& BIT(NL80211_STA_FLAG_AUTHORIZED
))
1760 e
->is_authorized
= 1;
1762 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_AUTHENTICATED
) &&
1763 sta_flags
->set
& BIT(NL80211_STA_FLAG_AUTHENTICATED
))
1764 e
->is_authenticated
= 1;
1766 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_SHORT_PREAMBLE
) &&
1767 sta_flags
->set
& BIT(NL80211_STA_FLAG_SHORT_PREAMBLE
))
1768 e
->is_preamble_short
= 1;
1770 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_WME
) &&
1771 sta_flags
->set
& BIT(NL80211_STA_FLAG_WME
))
1774 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_MFP
) &&
1775 sta_flags
->set
& BIT(NL80211_STA_FLAG_MFP
))
1778 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_TDLS_PEER
) &&
1779 sta_flags
->set
& BIT(NL80211_STA_FLAG_TDLS_PEER
))
1784 e
->noise
= 0; /* filled in by caller */
1790 static int nl80211_get_assoclist(const char *ifname
, char *buf
, int *len
)
1795 struct nl80211_msg_conveyor
*req
;
1796 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
1797 struct iwinfo_assoclist_entry
*e
;
1799 if ((d
= opendir("/sys/class/net")) != NULL
)
1801 while ((de
= readdir(d
)) != NULL
)
1803 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
1804 (!de
->d_name
[strlen(ifname
)] ||
1805 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
1807 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
1812 nl80211_send(req
, nl80211_get_assoclist_cb
, &arr
);
1820 if (!nl80211_get_noise(ifname
, &noise
))
1821 for (i
= 0, e
= arr
.buf
; i
< arr
.count
; i
++, e
++)
1824 *len
= (arr
.count
* sizeof(struct iwinfo_assoclist_entry
));
1831 static int nl80211_get_txpwrlist_cb(struct nl_msg
*msg
, void *arg
)
1834 int ch_cur
, ch_cmp
, bands_remain
, freqs_remain
;
1836 struct nlattr
**attr
= nl80211_parse(msg
);
1837 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1838 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1839 struct nlattr
*band
, *freq
;
1841 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
1842 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
1843 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
1844 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
1845 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
1846 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
1847 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
1850 ch_cur
= *dbm_max
; /* value int* is initialized with channel by caller */
1853 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1855 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1856 nla_len(band
), NULL
);
1858 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1860 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1861 nla_data(freq
), nla_len(freq
), freq_policy
);
1863 ch_cmp
= nl80211_freq2channel(nla_get_u32(
1864 freqs
[NL80211_FREQUENCY_ATTR_FREQ
]));
1866 if ((!ch_cur
|| (ch_cmp
== ch_cur
)) &&
1867 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
])
1869 *dbm_max
= (int)(0.01 * nla_get_u32(
1870 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
]));
1880 static int nl80211_get_txpwrlist(const char *ifname
, char *buf
, int *len
)
1883 int dbm_max
= -1, dbm_cur
, dbm_cnt
;
1884 struct nl80211_msg_conveyor
*req
;
1885 struct iwinfo_txpwrlist_entry entry
;
1887 if (nl80211_get_channel(ifname
, &ch_cur
))
1890 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1893 /* initialize the value pointer with channel for callback */
1896 nl80211_send(req
, nl80211_get_txpwrlist_cb
, &dbm_max
);
1902 for (dbm_cur
= 0, dbm_cnt
= 0;
1904 dbm_cur
++, dbm_cnt
++)
1906 entry
.dbm
= dbm_cur
;
1907 entry
.mw
= iwinfo_dbm2mw(dbm_cur
);
1909 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1912 entry
.dbm
= dbm_max
;
1913 entry
.mw
= iwinfo_dbm2mw(dbm_max
);
1915 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1918 *len
= dbm_cnt
* sizeof(entry
);
1925 static void nl80211_get_scancrypto(const char *spec
,
1926 struct iwinfo_crypto_entry
*c
)
1928 if (strstr(spec
, "WPA") || strstr(spec
, "WEP"))
1932 if (strstr(spec
, "WPA2-") && strstr(spec
, "WPA-"))
1935 else if (strstr(spec
, "WPA2"))
1938 else if (strstr(spec
, "WPA"))
1941 else if (strstr(spec
, "WEP"))
1942 c
->auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
1945 if (strstr(spec
, "PSK"))
1946 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1948 if (strstr(spec
, "802.1X") || strstr(spec
, "EAP"))
1949 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1951 if (strstr(spec
, "WPA-NONE"))
1952 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1955 if (strstr(spec
, "TKIP"))
1956 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1958 if (strstr(spec
, "CCMP"))
1959 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1961 if (strstr(spec
, "WEP-40"))
1962 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1964 if (strstr(spec
, "WEP-104"))
1965 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1967 c
->group_ciphers
= c
->pair_ciphers
;
1976 struct nl80211_scanlist
{
1977 struct iwinfo_scanlist_entry
*e
;
1982 static void nl80211_get_scanlist_ie(struct nlattr
**bss
,
1983 struct iwinfo_scanlist_entry
*e
)
1985 int ielen
= nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1986 unsigned char *ie
= nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1987 static unsigned char ms_oui
[3] = { 0x00, 0x50, 0xf2 };
1990 while (ielen
>= 2 && ielen
>= ie
[1])
1995 len
= min(ie
[1], IWINFO_ESSID_MAX_SIZE
);
1996 memcpy(e
->ssid
, ie
+ 2, len
);
2001 iwinfo_parse_rsn(&e
->crypto
, ie
+ 2, ie
[1],
2002 IWINFO_CIPHER_CCMP
, IWINFO_KMGMT_8021x
);
2005 case 221: /* Vendor */
2006 if (ie
[1] >= 4 && !memcmp(ie
+ 2, ms_oui
, 3) && ie
[5] == 1)
2007 iwinfo_parse_rsn(&e
->crypto
, ie
+ 6, ie
[1] - 4,
2008 IWINFO_CIPHER_TKIP
, IWINFO_KMGMT_PSK
);
2017 static int nl80211_get_scanlist_cb(struct nl_msg
*msg
, void *arg
)
2022 struct nl80211_scanlist
*sl
= arg
;
2023 struct nlattr
**tb
= nl80211_parse(msg
);
2024 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
2026 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
2027 [NL80211_BSS_TSF
] = { .type
= NLA_U64
},
2028 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
2029 [NL80211_BSS_BSSID
] = { 0 },
2030 [NL80211_BSS_BEACON_INTERVAL
] = { .type
= NLA_U16
},
2031 [NL80211_BSS_CAPABILITY
] = { .type
= NLA_U16
},
2032 [NL80211_BSS_INFORMATION_ELEMENTS
] = { 0 },
2033 [NL80211_BSS_SIGNAL_MBM
] = { .type
= NLA_U32
},
2034 [NL80211_BSS_SIGNAL_UNSPEC
] = { .type
= NLA_U8
},
2035 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
2036 [NL80211_BSS_SEEN_MS_AGO
] = { .type
= NLA_U32
},
2037 [NL80211_BSS_BEACON_IES
] = { 0 },
2040 if (!tb
[NL80211_ATTR_BSS
] ||
2041 nla_parse_nested(bss
, NL80211_BSS_MAX
, tb
[NL80211_ATTR_BSS
],
2043 !bss
[NL80211_BSS_BSSID
])
2048 if (bss
[NL80211_BSS_CAPABILITY
])
2049 caps
= nla_get_u16(bss
[NL80211_BSS_CAPABILITY
]);
2053 memset(sl
->e
, 0, sizeof(*sl
->e
));
2054 memcpy(sl
->e
->mac
, nla_data(bss
[NL80211_BSS_BSSID
]), 6);
2057 sl
->e
->mode
= IWINFO_OPMODE_ADHOC
;
2058 else if (caps
& (1<<0))
2059 sl
->e
->mode
= IWINFO_OPMODE_MASTER
;
2061 sl
->e
->mode
= IWINFO_OPMODE_MESHPOINT
;
2064 sl
->e
->crypto
.enabled
= 1;
2066 if (bss
[NL80211_BSS_FREQUENCY
])
2067 sl
->e
->channel
= nl80211_freq2channel(nla_get_u32(
2068 bss
[NL80211_BSS_FREQUENCY
]));
2070 if (bss
[NL80211_BSS_INFORMATION_ELEMENTS
])
2071 nl80211_get_scanlist_ie(bss
, sl
->e
);
2073 if (bss
[NL80211_BSS_SIGNAL_MBM
])
2076 (uint8_t)((int32_t)nla_get_u32(bss
[NL80211_BSS_SIGNAL_MBM
]) / 100);
2078 rssi
= sl
->e
->signal
- 0x100;
2082 else if (rssi
> -40)
2085 sl
->e
->quality
= (rssi
+ 110);
2086 sl
->e
->quality_max
= 70;
2089 if (sl
->e
->crypto
.enabled
&& !sl
->e
->crypto
.wpa_version
)
2091 sl
->e
->crypto
.auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
2092 sl
->e
->crypto
.pair_ciphers
= IWINFO_CIPHER_WEP40
| IWINFO_CIPHER_WEP104
;
2101 static int nl80211_get_scanlist_nl(const char *ifname
, char *buf
, int *len
)
2103 struct nl80211_msg_conveyor
*req
;
2104 struct nl80211_scanlist sl
= { .e
= (struct iwinfo_scanlist_entry
*)buf
};
2106 req
= nl80211_msg(ifname
, NL80211_CMD_TRIGGER_SCAN
, 0);
2109 nl80211_send(req
, NULL
, NULL
);
2113 nl80211_wait("nl80211", "scan", NL80211_CMD_NEW_SCAN_RESULTS
);
2115 req
= nl80211_msg(ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
2118 nl80211_send(req
, nl80211_get_scanlist_cb
, &sl
);
2122 *len
= sl
.len
* sizeof(struct iwinfo_scanlist_entry
);
2123 return *len
? 0 : -1;
2126 static int wpasupp_ssid_decode(const char *in
, char *out
, int outlen
)
2129 (((x) >= 'a') ? ((x) - 'a' + 10) : \
2130 (((x) >= 'A') ? ((x) - 'A' + 10) : ((x) - '0')))
2136 if (len
+ 1 >= outlen
)
2146 out
[len
++] = '\n'; in
++;
2150 out
[len
++] = '\r'; in
++;
2154 out
[len
++] = '\t'; in
++;
2158 out
[len
++] = '\033'; in
++;
2162 if (isxdigit(*(in
+1)) && isxdigit(*(in
+2)))
2163 out
[len
++] = hex(*(in
+1)) * 16 + hex(*(in
+2));
2185 static int nl80211_get_scanlist_wpactl(const char *ifname
, char *buf
, int *len
)
2187 int sock
, qmax
, rssi
, tries
, count
= -1, ready
= 0;
2188 char *pos
, *line
, *bssid
, *freq
, *signal
, *flags
, *ssid
, reply
[4096];
2189 struct sockaddr_un local
= { 0 };
2190 struct iwinfo_scanlist_entry
*e
= (struct iwinfo_scanlist_entry
*)buf
;
2192 sock
= nl80211_wpactl_connect(ifname
, &local
);
2197 send(sock
, "ATTACH", 6, 0);
2198 send(sock
, "SCAN", 4, 0);
2201 * wait for scan results:
2202 * nl80211_wpactl_recv() will use a timeout of 256ms and we need to scan
2203 * 72 channels at most. We'll also receive two "OK" messages acknowledging
2204 * the "ATTACH" and "SCAN" commands and the driver might need a bit extra
2205 * time to process the results, so try 72 + 2 + 1 times.
2207 for (tries
= 0; tries
< 75; tries
++)
2209 if (nl80211_wpactl_recv(sock
, reply
, sizeof(reply
)) <= 0)
2212 /* got an event notification */
2213 if (reply
[0] == '<')
2215 /* scan results are ready */
2216 if (strstr(reply
, "CTRL-EVENT-SCAN-RESULTS"))
2218 /* send "SCAN_RESULTS" command */
2219 ready
= (send(sock
, "SCAN_RESULTS", 12, 0) == 12);
2223 /* is another unrelated event, retry */
2228 /* receive and parse scan results if the wait above didn't time out */
2229 if (ready
&& nl80211_wpactl_recv(sock
, reply
, sizeof(reply
)) > 0)
2231 nl80211_get_quality_max(ifname
, &qmax
);
2233 for (line
= strtok_r(reply
, "\n", &pos
);
2235 line
= strtok_r(NULL
, "\n", &pos
))
2237 /* skip header line */
2244 bssid
= strtok(line
, "\t");
2245 freq
= strtok(NULL
, "\t");
2246 signal
= strtok(NULL
, "\t");
2247 flags
= strtok(NULL
, "\t");
2248 ssid
= strtok(NULL
, "\n");
2250 if (!bssid
|| !freq
|| !signal
|| !flags
|| !ssid
)
2254 e
->mac
[0] = strtol(&bssid
[0], NULL
, 16);
2255 e
->mac
[1] = strtol(&bssid
[3], NULL
, 16);
2256 e
->mac
[2] = strtol(&bssid
[6], NULL
, 16);
2257 e
->mac
[3] = strtol(&bssid
[9], NULL
, 16);
2258 e
->mac
[4] = strtol(&bssid
[12], NULL
, 16);
2259 e
->mac
[5] = strtol(&bssid
[15], NULL
, 16);
2262 wpasupp_ssid_decode(ssid
, e
->ssid
, sizeof(e
->ssid
));
2265 if (strstr(flags
, "[MESH]"))
2266 e
->mode
= IWINFO_OPMODE_MESHPOINT
;
2267 else if (strstr(flags
, "[IBSS]"))
2268 e
->mode
= IWINFO_OPMODE_ADHOC
;
2270 e
->mode
= IWINFO_OPMODE_MASTER
;
2273 e
->channel
= nl80211_freq2channel(atoi(freq
));
2276 rssi
= atoi(signal
);
2282 /* The cfg80211 wext compat layer assumes a signal range
2283 * of -110 dBm to -40 dBm, the quality value is derived
2284 * by adding 110 to the signal level */
2287 else if (rssi
> -40)
2290 e
->quality
= (rssi
+ 110);
2298 e
->quality_max
= qmax
;
2301 nl80211_get_scancrypto(flags
, &e
->crypto
);
2307 *len
= count
* sizeof(struct iwinfo_scanlist_entry
);
2311 unlink(local
.sun_path
);
2313 return (count
>= 0) ? 0 : -1;
2316 static int nl80211_get_scanlist(const char *ifname
, char *buf
, int *len
)
2323 /* Got a radioX pseudo interface, find some interface on it or create one */
2324 if (!strncmp(ifname
, "radio", 5))
2326 /* Reuse existing interface */
2327 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
2329 return nl80211_get_scanlist(res
, buf
, len
);
2332 /* Need to spawn a temporary iface for scanning */
2333 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
2335 rv
= nl80211_get_scanlist(res
, buf
, len
);
2341 /* WPA supplicant */
2342 if (!nl80211_get_scanlist_wpactl(ifname
, buf
, len
))
2347 /* station / ad-hoc / monitor scan */
2348 else if (!nl80211_get_mode(ifname
, &mode
) &&
2349 (mode
== IWINFO_OPMODE_ADHOC
||
2350 mode
== IWINFO_OPMODE_MASTER
||
2351 mode
== IWINFO_OPMODE_CLIENT
||
2352 mode
== IWINFO_OPMODE_MONITOR
) &&
2353 iwinfo_ifup(ifname
))
2355 return nl80211_get_scanlist_nl(ifname
, buf
, len
);
2361 /* Got a temp interface, don't create yet another one */
2362 if (!strncmp(ifname
, "tmp.", 4))
2364 if (!iwinfo_ifup(ifname
))
2367 rv
= nl80211_get_scanlist_nl(ifname
, buf
, len
);
2368 iwinfo_ifdown(ifname
);
2372 /* Spawn a new scan interface */
2375 if (!(res
= nl80211_ifadd(ifname
)))
2380 /* if we can take the new interface up, the driver supports an
2381 * additional interface and there's no need to tear down the ap */
2382 if (iwinfo_ifup(res
))
2384 rv
= nl80211_get_scanlist_nl(res
, buf
, len
);
2388 /* driver cannot create secondary interface, take down ap
2390 else if (iwinfo_ifdown(ifname
) && iwinfo_ifup(res
))
2392 rv
= nl80211_get_scanlist_nl(res
, buf
, len
);
2394 iwinfo_ifup(ifname
);
2395 nl80211_hostapd_hup(ifname
);
2406 static int nl80211_get_freqlist_cb(struct nl_msg
*msg
, void *arg
)
2408 int bands_remain
, freqs_remain
;
2410 struct nl80211_array_buf
*arr
= arg
;
2411 struct iwinfo_freqlist_entry
*e
= arr
->buf
;
2413 struct nlattr
**attr
= nl80211_parse(msg
);
2414 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
2415 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
2416 struct nlattr
*band
, *freq
;
2418 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
2420 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
2421 nla_data(band
), nla_len(band
), NULL
);
2423 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
2425 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
2426 nla_data(freq
), nla_len(freq
), NULL
);
2428 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
] ||
2429 freqs
[NL80211_FREQUENCY_ATTR_DISABLED
])
2432 e
->mhz
= nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]);
2433 e
->channel
= nl80211_freq2channel(e
->mhz
);
2436 freqs
[NL80211_FREQUENCY_ATTR_NO_IR
] &&
2437 !freqs
[NL80211_FREQUENCY_ATTR_RADAR
]
2448 static int nl80211_get_freqlist(const char *ifname
, char *buf
, int *len
)
2450 struct nl80211_msg_conveyor
*req
;
2451 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
2453 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
2456 nl80211_send(req
, nl80211_get_freqlist_cb
, &arr
);
2462 *len
= arr
.count
* sizeof(struct iwinfo_freqlist_entry
);
2469 static int nl80211_get_country_cb(struct nl_msg
*msg
, void *arg
)
2472 struct nlattr
**attr
= nl80211_parse(msg
);
2474 if (attr
[NL80211_ATTR_REG_ALPHA2
])
2475 memcpy(buf
, nla_data(attr
[NL80211_ATTR_REG_ALPHA2
]), 2);
2482 static int nl80211_get_country(const char *ifname
, char *buf
)
2485 struct nl80211_msg_conveyor
*req
;
2487 req
= nl80211_msg(ifname
, NL80211_CMD_GET_REG
, 0);
2490 nl80211_send(req
, nl80211_get_country_cb
, buf
);
2500 static int nl80211_get_countrylist(const char *ifname
, char *buf
, int *len
)
2503 struct iwinfo_country_entry
*e
= (struct iwinfo_country_entry
*)buf
;
2504 const struct iwinfo_iso3166_label
*l
;
2506 for (l
= IWINFO_ISO3166_NAMES
, count
= 0; l
->iso3166
; l
++, e
++, count
++)
2508 e
->iso3166
= l
->iso3166
;
2509 e
->ccode
[0] = (l
->iso3166
/ 256);
2510 e
->ccode
[1] = (l
->iso3166
% 256);
2514 *len
= (count
* sizeof(struct iwinfo_country_entry
));
2519 struct nl80211_modes
2526 static int nl80211_get_modelist_cb(struct nl_msg
*msg
, void *arg
)
2528 struct nl80211_modes
*m
= arg
;
2529 int bands_remain
, freqs_remain
;
2531 uint32_t vht_caps
= 0;
2532 struct nlattr
**attr
= nl80211_parse(msg
);
2533 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
2534 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
2535 struct nlattr
*band
, *freq
;
2537 if (attr
[NL80211_ATTR_WIPHY_BANDS
])
2539 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
2541 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
2542 nla_data(band
), nla_len(band
), NULL
);
2544 if (bands
[NL80211_BAND_ATTR_HT_CAPA
])
2545 caps
= nla_get_u16(bands
[NL80211_BAND_ATTR_HT_CAPA
]);
2547 /* Treat any nonzero capability as 11n */
2550 m
->hw
|= IWINFO_80211_N
;
2551 m
->ht
|= IWINFO_HTMODE_HT20
;
2553 if (caps
& (1 << 1))
2554 m
->ht
|= IWINFO_HTMODE_HT40
;
2557 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
],
2560 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
2561 nla_data(freq
), nla_len(freq
), NULL
);
2563 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
])
2566 if (nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]) < 2485)
2568 m
->hw
|= IWINFO_80211_B
;
2569 m
->hw
|= IWINFO_80211_G
;
2571 else if (bands
[NL80211_BAND_ATTR_VHT_CAPA
])
2573 vht_caps
= nla_get_u32(bands
[NL80211_BAND_ATTR_VHT_CAPA
]);
2575 /* Treat any nonzero capability as 11ac */
2578 m
->hw
|= IWINFO_80211_AC
;
2579 m
->ht
|= IWINFO_HTMODE_VHT20
| IWINFO_HTMODE_VHT40
| IWINFO_HTMODE_VHT80
;
2581 switch ((vht_caps
>> 2) & 3)
2584 m
->ht
|= IWINFO_HTMODE_VHT80_80
;
2588 m
->ht
|= IWINFO_HTMODE_VHT160
;
2592 else if (!(m
->hw
& IWINFO_80211_AC
))
2594 m
->hw
|= IWINFO_80211_A
;
2605 static int nl80211_get_hwmodelist(const char *ifname
, int *buf
)
2607 struct nl80211_msg_conveyor
*req
;
2608 struct nl80211_modes m
= { 0 };
2610 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
2613 nl80211_send(req
, nl80211_get_modelist_cb
, &m
);
2626 static int nl80211_get_htmodelist(const char *ifname
, int *buf
)
2628 struct nl80211_msg_conveyor
*req
;
2629 struct nl80211_modes m
= { 0 };
2631 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
2634 nl80211_send(req
, nl80211_get_modelist_cb
, &m
);
2648 static int nl80211_get_ifcomb_cb(struct nl_msg
*msg
, void *arg
)
2650 struct nlattr
**attr
= nl80211_parse(msg
);
2651 struct nlattr
*comb
;
2653 int comb_rem
, limit_rem
, mode_rem
;
2656 if (!attr
[NL80211_ATTR_INTERFACE_COMBINATIONS
])
2659 nla_for_each_nested(comb
, attr
[NL80211_ATTR_INTERFACE_COMBINATIONS
], comb_rem
)
2661 static struct nla_policy iface_combination_policy
[NUM_NL80211_IFACE_COMB
] = {
2662 [NL80211_IFACE_COMB_LIMITS
] = { .type
= NLA_NESTED
},
2663 [NL80211_IFACE_COMB_MAXNUM
] = { .type
= NLA_U32
},
2665 struct nlattr
*tb_comb
[NUM_NL80211_IFACE_COMB
+1];
2666 static struct nla_policy iface_limit_policy
[NUM_NL80211_IFACE_LIMIT
] = {
2667 [NL80211_IFACE_LIMIT_TYPES
] = { .type
= NLA_NESTED
},
2668 [NL80211_IFACE_LIMIT_MAX
] = { .type
= NLA_U32
},
2670 struct nlattr
*tb_limit
[NUM_NL80211_IFACE_LIMIT
+1];
2671 struct nlattr
*limit
;
2673 nla_parse_nested(tb_comb
, NUM_NL80211_IFACE_COMB
, comb
, iface_combination_policy
);
2675 if (!tb_comb
[NL80211_IFACE_COMB_LIMITS
])
2678 nla_for_each_nested(limit
, tb_comb
[NL80211_IFACE_COMB_LIMITS
], limit_rem
)
2680 struct nlattr
*mode
;
2682 nla_parse_nested(tb_limit
, NUM_NL80211_IFACE_LIMIT
, limit
, iface_limit_policy
);
2684 if (!tb_limit
[NL80211_IFACE_LIMIT_TYPES
] ||
2685 !tb_limit
[NL80211_IFACE_LIMIT_MAX
])
2688 if (nla_get_u32(tb_limit
[NL80211_IFACE_LIMIT_MAX
]) < 2)
2691 nla_for_each_nested(mode
, tb_limit
[NL80211_IFACE_LIMIT_TYPES
], mode_rem
) {
2692 if (nla_type(mode
) == NL80211_IFTYPE_AP
)
2701 static int nl80211_get_mbssid_support(const char *ifname
, int *buf
)
2703 struct nl80211_msg_conveyor
*req
;
2705 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
2709 nl80211_send(req
, nl80211_get_ifcomb_cb
, buf
);
2714 static int nl80211_get_hardware_id(const char *ifname
, char *buf
)
2719 /* Got a radioX pseudo interface, find some interface on it or create one */
2720 if (!strncmp(ifname
, "radio", 5))
2722 /* Reuse existing interface */
2723 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
2725 rv
= wext_ops
.hardware_id(res
, buf
);
2728 /* Need to spawn a temporary iface for finding IDs */
2729 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
2731 rv
= wext_ops
.hardware_id(res
, buf
);
2737 rv
= wext_ops
.hardware_id(ifname
, buf
);
2740 /* Failed to obtain hardware IDs, search board config */
2743 rv
= iwinfo_hardware_id_from_mtd((struct iwinfo_hardware_id
*)buf
);
2749 static const struct iwinfo_hardware_entry
*
2750 nl80211_get_hardware_entry(const char *ifname
)
2752 struct iwinfo_hardware_id id
;
2754 if (nl80211_get_hardware_id(ifname
, (char *)&id
))
2757 return iwinfo_hardware(&id
);
2760 static int nl80211_get_hardware_name(const char *ifname
, char *buf
)
2762 const struct iwinfo_hardware_entry
*hw
;
2764 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2765 sprintf(buf
, "Generic MAC80211");
2767 sprintf(buf
, "%s %s", hw
->vendor_name
, hw
->device_name
);
2772 static int nl80211_get_txpower_offset(const char *ifname
, int *buf
)
2774 const struct iwinfo_hardware_entry
*hw
;
2776 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2779 *buf
= hw
->txpower_offset
;
2783 static int nl80211_get_frequency_offset(const char *ifname
, int *buf
)
2785 const struct iwinfo_hardware_entry
*hw
;
2787 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2790 *buf
= hw
->frequency_offset
;
2794 static int nl80211_lookup_phyname(const char *section
, char *buf
)
2798 if ((idx
= nl80211_phy_idx_from_uci(section
)) < 0)
2801 sprintf(buf
, "phy%d", idx
);
2805 const struct iwinfo_ops nl80211_ops
= {
2807 .probe
= nl80211_probe
,
2808 .channel
= nl80211_get_channel
,
2809 .frequency
= nl80211_get_frequency
,
2810 .frequency_offset
= nl80211_get_frequency_offset
,
2811 .txpower
= nl80211_get_txpower
,
2812 .txpower_offset
= nl80211_get_txpower_offset
,
2813 .bitrate
= nl80211_get_bitrate
,
2814 .signal
= nl80211_get_signal
,
2815 .noise
= nl80211_get_noise
,
2816 .quality
= nl80211_get_quality
,
2817 .quality_max
= nl80211_get_quality_max
,
2818 .mbssid_support
= nl80211_get_mbssid_support
,
2819 .hwmodelist
= nl80211_get_hwmodelist
,
2820 .htmodelist
= nl80211_get_htmodelist
,
2821 .mode
= nl80211_get_mode
,
2822 .ssid
= nl80211_get_ssid
,
2823 .bssid
= nl80211_get_bssid
,
2824 .country
= nl80211_get_country
,
2825 .hardware_id
= nl80211_get_hardware_id
,
2826 .hardware_name
= nl80211_get_hardware_name
,
2827 .encryption
= nl80211_get_encryption
,
2828 .phyname
= nl80211_get_phyname
,
2829 .assoclist
= nl80211_get_assoclist
,
2830 .txpwrlist
= nl80211_get_txpwrlist
,
2831 .scanlist
= nl80211_get_scanlist
,
2832 .freqlist
= nl80211_get_freqlist
,
2833 .countrylist
= nl80211_get_countrylist
,
2834 .lookup_phy
= nl80211_lookup_phyname
,
2835 .close
= nl80211_close