2 * iwinfo - Wireless Information Library - NL80211 Backend
4 * Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
6 * The iwinfo library is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation.
10 * The iwinfo library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 * See the GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with the iwinfo library. If not, see http://www.gnu.org/licenses/.
18 * The signal handling code is derived from the official madwifi tools,
19 * wlanconfig.c in particular. The encryption property handling was
20 * inspired by the hostapd madwifi driver.
22 * Parts of this code are derived from the Linux iw utility.
25 #include "iwinfo/nl80211.h"
26 #include "iwinfo/wext.h"
28 #define min(x, y) ((x) < (y)) ? (x) : (y)
30 static struct nl80211_state
*nls
= NULL
;
32 static int nl80211_init(void)
38 nls
= malloc(sizeof(struct nl80211_state
));
44 nls
->nl_sock
= nl_socket_alloc();
50 if (genl_connect(nls
->nl_sock
)) {
55 fd
= nl_socket_get_fd(nls
->nl_sock
);
56 if (fcntl(fd
, F_SETFD
, fcntl(fd
, F_GETFD
) | FD_CLOEXEC
) < 0) {
61 if (genl_ctrl_alloc_cache(nls
->nl_sock
, &nls
->nl_cache
)) {
66 nls
->nl80211
= genl_ctrl_search_by_name(nls
->nl_cache
, "nl80211");
72 nls
->nlctrl
= genl_ctrl_search_by_name(nls
->nl_cache
, "nlctrl");
88 static int nl80211_msg_error(struct sockaddr_nl
*nla
,
89 struct nlmsgerr
*err
, void *arg
)
96 static int nl80211_msg_finish(struct nl_msg
*msg
, void *arg
)
103 static int nl80211_msg_ack(struct nl_msg
*msg
, void *arg
)
110 static int nl80211_msg_response(struct nl_msg
*msg
, void *arg
)
115 static void nl80211_free(struct nl80211_msg_conveyor
*cv
)
130 static struct nl80211_msg_conveyor
* nl80211_new(struct genl_family
*family
,
133 static struct nl80211_msg_conveyor cv
;
135 struct nl_msg
*req
= NULL
;
136 struct nl_cb
*cb
= NULL
;
142 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
146 genlmsg_put(req
, 0, 0, genl_family_get_id(family
), 0, flags
, cmd
, 0);
164 static struct nl80211_msg_conveyor
* nl80211_ctl(int cmd
, int flags
)
166 if (nl80211_init() < 0)
169 return nl80211_new(nls
->nlctrl
, cmd
, flags
);
172 static struct nl80211_msg_conveyor
* nl80211_msg(const char *ifname
,
175 int ifidx
= -1, phyidx
= -1;
176 struct nl80211_msg_conveyor
*cv
;
178 if (nl80211_init() < 0)
181 if (!strncmp(ifname
, "phy", 3))
182 phyidx
= atoi(&ifname
[3]);
183 else if (!strncmp(ifname
, "radio", 5))
184 phyidx
= atoi(&ifname
[5]);
185 else if (!strncmp(ifname
, "mon.", 4))
186 ifidx
= if_nametoindex(&ifname
[4]);
188 ifidx
= if_nametoindex(ifname
);
190 if ((ifidx
< 0) && (phyidx
< 0))
193 cv
= nl80211_new(nls
->nl80211
, cmd
, flags
);
198 NLA_PUT_U32(cv
->msg
, NL80211_ATTR_IFINDEX
, ifidx
);
201 NLA_PUT_U32(cv
->msg
, NL80211_ATTR_WIPHY
, phyidx
);
210 static struct nl80211_msg_conveyor
* nl80211_send(
211 struct nl80211_msg_conveyor
*cv
,
212 int (*cb_func
)(struct nl_msg
*, void *), void *cb_arg
214 static struct nl80211_msg_conveyor rcv
;
218 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_func
, cb_arg
);
220 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_msg_response
, &rcv
);
222 if (nl_send_auto_complete(nls
->nl_sock
, cv
->msg
) < 0)
225 nl_cb_err(cv
->cb
, NL_CB_CUSTOM
, nl80211_msg_error
, &err
);
226 nl_cb_set(cv
->cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, nl80211_msg_finish
, &err
);
227 nl_cb_set(cv
->cb
, NL_CB_ACK
, NL_CB_CUSTOM
, nl80211_msg_ack
, &err
);
230 nl_recvmsgs(nls
->nl_sock
, cv
->cb
);
241 static struct nlattr
** nl80211_parse(struct nl_msg
*msg
)
243 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
244 static struct nlattr
*attr
[NL80211_ATTR_MAX
+ 1];
246 nla_parse(attr
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
247 genlmsg_attrlen(gnlh
, 0), NULL
);
253 static int nl80211_subscribe_cb(struct nl_msg
*msg
, void *arg
)
255 struct nl80211_group_conveyor
*cv
= arg
;
257 struct nlattr
**attr
= nl80211_parse(msg
);
258 struct nlattr
*mgrpinfo
[CTRL_ATTR_MCAST_GRP_MAX
+ 1];
262 if (!attr
[CTRL_ATTR_MCAST_GROUPS
])
265 nla_for_each_nested(mgrp
, attr
[CTRL_ATTR_MCAST_GROUPS
], mgrpidx
)
267 nla_parse(mgrpinfo
, CTRL_ATTR_MCAST_GRP_MAX
,
268 nla_data(mgrp
), nla_len(mgrp
), NULL
);
270 if (mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
] &&
271 mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
] &&
272 !strncmp(nla_data(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
]),
273 cv
->name
, nla_len(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
])))
275 cv
->id
= nla_get_u32(mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
]);
283 static int nl80211_subscribe(const char *family
, const char *group
)
285 struct nl80211_group_conveyor cv
= { .name
= group
, .id
= -ENOENT
};
286 struct nl80211_msg_conveyor
*req
;
288 req
= nl80211_ctl(CTRL_CMD_GETFAMILY
, 0);
291 NLA_PUT_STRING(req
->msg
, CTRL_ATTR_FAMILY_NAME
, family
);
292 nl80211_send(req
, nl80211_subscribe_cb
, &cv
);
298 return nl_socket_add_membership(nls
->nl_sock
, cv
.id
);
302 static int nl80211_wait_cb(struct nl_msg
*msg
, void *arg
)
304 struct nl80211_event_conveyor
*cv
= arg
;
305 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
307 if (gnlh
->cmd
== cv
->wait
)
308 cv
->recv
= gnlh
->cmd
;
313 static int nl80211_wait_seq_check(struct nl_msg
*msg
, void *arg
)
318 static int nl80211_wait(const char *family
, const char *group
, int cmd
)
320 struct nl80211_event_conveyor cv
= { .wait
= cmd
};
323 if (nl80211_subscribe(family
, group
))
326 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
331 nl_cb_set(cb
, NL_CB_SEQ_CHECK
, NL_CB_CUSTOM
, nl80211_wait_seq_check
, NULL
);
332 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_wait_cb
, &cv
);
335 nl_recvmsgs(nls
->nl_sock
, cb
);
343 static int nl80211_freq2channel(int freq
)
349 return (freq
- 2407) / 5;
351 return (freq
/ 5) - 1000;
354 static int nl80211_channel2freq(int channel
)
360 return (channel
* 5) + 2407;
362 return (1000 + channel
) * 5;
365 static char * nl80211_getval(const char *ifname
, const char *buf
, const char *key
)
368 char lkey
[64] = { 0 };
369 const char *ln
= buf
;
370 static char lval
[256] = { 0 };
372 int matched_if
= ifname
? 0 : 1;
375 for( i
= 0, len
= strlen(buf
); i
< len
; i
++ )
377 if (!lkey
[0] && (buf
[i
] == ' ' || buf
[i
] == '\t'))
381 else if (!lkey
[0] && (buf
[i
] == '='))
383 if ((&buf
[i
] - ln
) > 0)
384 memcpy(lkey
, ln
, min(sizeof(lkey
) - 1, &buf
[i
] - ln
));
386 else if (buf
[i
] == '\n')
390 memcpy(lval
, ln
+ strlen(lkey
) + 1,
391 min(sizeof(lval
) - 1, &buf
[i
] - ln
- strlen(lkey
) - 1));
393 if ((ifname
!= NULL
) &&
394 (!strcmp(lkey
, "interface") || !strcmp(lkey
, "bss")) )
396 matched_if
= !strcmp(lval
, ifname
);
398 else if (matched_if
&& !strcmp(lkey
, key
))
405 memset(lkey
, 0, sizeof(lkey
));
406 memset(lval
, 0, sizeof(lval
));
413 static int nl80211_ifname2phy_cb(struct nl_msg
*msg
, void *arg
)
416 struct nlattr
**attr
= nl80211_parse(msg
);
418 if (attr
[NL80211_ATTR_WIPHY_NAME
])
419 memcpy(buf
, nla_data(attr
[NL80211_ATTR_WIPHY_NAME
]),
420 nla_len(attr
[NL80211_ATTR_WIPHY_NAME
]));
427 static char * nl80211_ifname2phy(const char *ifname
)
429 static char phy
[32] = { 0 };
430 struct nl80211_msg_conveyor
*req
;
432 memset(phy
, 0, sizeof(phy
));
434 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
437 nl80211_send(req
, nl80211_ifname2phy_cb
, phy
);
441 return phy
[0] ? phy
: NULL
;
444 static char * nl80211_hostapd_info(const char *ifname
)
447 char path
[32] = { 0 };
448 static char buf
[4096] = { 0 };
451 if ((phy
= nl80211_ifname2phy(ifname
)) != NULL
)
453 snprintf(path
, sizeof(path
), "/var/run/hostapd-%s.conf", phy
);
455 if ((conf
= fopen(path
, "r")) != NULL
)
457 fread(buf
, sizeof(buf
) - 1, 1, conf
);
467 static inline int nl80211_wpactl_recv(int sock
, char *buf
, int blen
)
470 struct timeval tv
= { 2, 0 };
475 memset(buf
, 0, blen
);
478 if (select(sock
+ 1, &rfds
, NULL
, NULL
, &tv
) < 0)
481 if (!FD_ISSET(sock
, &rfds
))
484 return recv(sock
, buf
, blen
, 0);
487 static char * nl80211_wpactl_info(const char *ifname
, const char *cmd
,
493 size_t remote_length
, local_length
;
494 static char buffer
[10240] = { 0 };
496 struct sockaddr_un local
= { 0 };
497 struct sockaddr_un remote
= { 0 };
500 sock
= socket(PF_UNIX
, SOCK_DGRAM
, 0);
504 remote
.sun_family
= AF_UNIX
;
505 remote_length
= sizeof(remote
.sun_family
) + sprintf(remote
.sun_path
,
506 "/var/run/wpa_supplicant-%s/%s", ifname
, ifname
);
508 if (fcntl(sock
, F_SETFD
, fcntl(sock
, F_GETFD
) | FD_CLOEXEC
) < 0)
511 if (connect(sock
, (struct sockaddr
*) &remote
, remote_length
))
514 local
.sun_family
= AF_UNIX
;
515 local_length
= sizeof(local
.sun_family
) +
516 sprintf(local
.sun_path
, "/var/run/iwinfo-%s-%d", ifname
, getpid());
518 if (bind(sock
, (struct sockaddr
*) &local
, local_length
))
524 send(sock
, "ATTACH", 6, 0);
526 if (nl80211_wpactl_recv(sock
, buffer
, sizeof(buffer
)) <= 0)
531 send(sock
, cmd
, strlen(cmd
), 0);
533 while( numtry
++ < 5 )
535 if (nl80211_wpactl_recv(sock
, buffer
, sizeof(buffer
)) <= 0)
543 if ((!event
&& buffer
[0] != '<') || (event
&& strstr(buffer
, event
)))
552 if (local
.sun_family
)
553 unlink(local
.sun_path
);
558 static inline int nl80211_readint(const char *path
)
564 if ((fd
= open(path
, O_RDONLY
)) > -1)
566 if (read(fd
, buffer
, sizeof(buffer
)) > 0)
575 static char * nl80211_phy2ifname(const char *ifname
)
577 int fd
, ifidx
= -1, cifidx
= -1, phyidx
= -1;
579 static char nif
[IFNAMSIZ
] = { 0 };
586 else if (!strncmp(ifname
, "phy", 3))
587 phyidx
= atoi(&ifname
[3]);
588 else if (!strncmp(ifname
, "radio", 5))
589 phyidx
= atoi(&ifname
[5]);
591 memset(nif
, 0, sizeof(nif
));
595 if ((d
= opendir("/sys/class/net")) != NULL
)
597 while ((e
= readdir(d
)) != NULL
)
599 snprintf(buffer
, sizeof(buffer
),
600 "/sys/class/net/%s/phy80211/index", e
->d_name
);
602 if (nl80211_readint(buffer
) == phyidx
)
604 snprintf(buffer
, sizeof(buffer
),
605 "/sys/class/net/%s/ifindex", e
->d_name
);
607 if ((cifidx
= nl80211_readint(buffer
)) >= 0 &&
608 ((ifidx
< 0) || (cifidx
< ifidx
)))
611 strncpy(nif
, e
->d_name
, sizeof(nif
));
620 return nif
[0] ? nif
: NULL
;
623 static char * nl80211_ifadd(const char *ifname
)
627 static char nif
[IFNAMSIZ
] = { 0 };
628 struct nl80211_msg_conveyor
*req
, *res
;
630 req
= nl80211_msg(ifname
, NL80211_CMD_NEW_INTERFACE
, 0);
633 snprintf(nif
, sizeof(nif
), "tmp.%s", ifname
);
635 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, nif
);
636 NLA_PUT_U32(req
->msg
, NL80211_ATTR_IFTYPE
, NL80211_IFTYPE_STATION
);
638 nl80211_send(req
, NULL
, NULL
);
649 static void nl80211_ifdel(const char *ifname
)
651 struct nl80211_msg_conveyor
*req
;
653 req
= nl80211_msg(ifname
, NL80211_CMD_DEL_INTERFACE
, 0);
656 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, ifname
);
658 nl80211_send(req
, NULL
, NULL
);
665 static void nl80211_hostapd_hup(const char *ifname
)
669 char *phy
= nl80211_ifname2phy(ifname
);
673 snprintf(buf
, sizeof(buf
), "/var/run/wifi-%s.pid", phy
);
674 if ((fd
= open(buf
, O_RDONLY
)) > 0)
676 if (read(fd
, buf
, sizeof(buf
)) > 0)
688 int nl80211_probe(const char *ifname
)
690 return !!nl80211_ifname2phy(ifname
);
693 void nl80211_close(void)
698 genl_family_put(nls
->nlctrl
);
701 genl_family_put(nls
->nl80211
);
704 nl_socket_free(nls
->nl_sock
);
707 nl_cache_free(nls
->nl_cache
);
714 int nl80211_get_mode(const char *ifname
, int *buf
)
716 return wext_get_mode(ifname
, buf
);
719 int nl80211_get_ssid(const char *ifname
, char *buf
)
723 if (!wext_get_ssid(ifname
, buf
))
727 else if ((ssid
= nl80211_hostapd_info(ifname
)) &&
728 (ssid
= nl80211_getval(ifname
, ssid
, "ssid")))
730 memcpy(buf
, ssid
, strlen(ssid
));
737 int nl80211_get_bssid(const char *ifname
, char *buf
)
740 unsigned char mac
[6];
742 if (!wext_get_bssid(ifname
, buf
))
746 else if ((bssid
= nl80211_hostapd_info(ifname
)) &&
747 (bssid
= nl80211_getval(ifname
, bssid
, "bssid")))
749 mac
[0] = strtol(&bssid
[0], NULL
, 16);
750 mac
[1] = strtol(&bssid
[3], NULL
, 16);
751 mac
[2] = strtol(&bssid
[6], NULL
, 16);
752 mac
[3] = strtol(&bssid
[9], NULL
, 16);
753 mac
[4] = strtol(&bssid
[12], NULL
, 16);
754 mac
[5] = strtol(&bssid
[15], NULL
, 16);
756 sprintf(buf
, "%02X:%02X:%02X:%02X:%02X:%02X",
757 mac
[0], mac
[1], mac
[2], mac
[3], mac
[4], mac
[5]);
766 static int nl80211_get_channel_cb(struct nl_msg
*msg
, void *arg
)
769 struct nlattr
**attr
= nl80211_parse(msg
);
770 struct nlattr
*binfo
[NL80211_BSS_MAX
+ 1];
772 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
773 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
776 if (attr
[NL80211_ATTR_BSS
] &&
777 !nla_parse_nested(binfo
, NL80211_BSS_MAX
,
778 attr
[NL80211_ATTR_BSS
], bss_policy
))
780 if (binfo
[NL80211_BSS_FREQUENCY
])
782 nl80211_freq2channel(nla_get_u32(binfo
[NL80211_BSS_FREQUENCY
]));
788 int nl80211_get_channel(const char *ifname
, int *buf
)
791 struct nl80211_msg_conveyor
*req
;
795 if ((res
= nl80211_hostapd_info(ifname
)) &&
796 (res
= nl80211_getval(NULL
, res
, "channel")))
802 res
= nl80211_phy2ifname(ifname
);
803 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
807 nl80211_send(req
, nl80211_get_channel_cb
, buf
);
812 return (*buf
== 0) ? -1 : 0;
815 int nl80211_get_frequency(const char *ifname
, int *buf
)
817 if (!nl80211_get_channel(ifname
, buf
))
819 *buf
= nl80211_channel2freq(*buf
);
827 int nl80211_get_txpower(const char *ifname
, int *buf
)
829 return wext_get_txpower(ifname
, buf
);
833 static int nl80211_fill_signal_cb(struct nl_msg
*msg
, void *arg
)
837 struct nl80211_rssi_rate
*rr
= arg
;
838 struct nlattr
**attr
= nl80211_parse(msg
);
839 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
840 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
842 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
843 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
844 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
845 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
846 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
847 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
848 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
849 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
850 [NL80211_STA_INFO_LLID
] = { .type
= NLA_U16
},
851 [NL80211_STA_INFO_PLID
] = { .type
= NLA_U16
},
852 [NL80211_STA_INFO_PLINK_STATE
] = { .type
= NLA_U8
},
855 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
856 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
857 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
858 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
859 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
862 if (attr
[NL80211_ATTR_STA_INFO
])
864 if (!nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
865 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
867 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
869 dbm
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
870 rr
->rssi
= rr
->rssi
? (int8_t)((rr
->rssi
+ dbm
) / 2) : dbm
;
873 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
])
875 if (!nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
876 sinfo
[NL80211_STA_INFO_TX_BITRATE
],
879 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
881 mbit
= nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]);
883 ? (int16_t)((rr
->rate
+ mbit
) / 2) : mbit
;
893 static void nl80211_fill_signal(const char *ifname
, struct nl80211_rssi_rate
*r
)
897 struct nl80211_msg_conveyor
*req
;
902 if ((d
= opendir("/sys/class/net")) != NULL
)
904 while ((de
= readdir(d
)) != NULL
)
906 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
907 (!de
->d_name
[strlen(ifname
)] ||
908 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
910 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
915 nl80211_send(req
, nl80211_fill_signal_cb
, r
);
925 int nl80211_get_bitrate(const char *ifname
, int *buf
)
927 struct nl80211_rssi_rate rr
;
929 if (!wext_get_bitrate(ifname
, buf
))
932 nl80211_fill_signal(ifname
, &rr
);
936 *buf
= (rr
.rate
* 100);
943 int nl80211_get_signal(const char *ifname
, int *buf
)
945 struct nl80211_rssi_rate rr
;
947 if (!wext_get_signal(ifname
, buf
))
950 nl80211_fill_signal(ifname
, &rr
);
961 static int nl80211_get_noise_cb(struct nl_msg
*msg
, void *arg
)
964 struct nlattr
**tb
= nl80211_parse(msg
);
965 struct nlattr
*si
[NL80211_SURVEY_INFO_MAX
+ 1];
967 static struct nla_policy sp
[NL80211_SURVEY_INFO_MAX
+ 1] = {
968 [NL80211_SURVEY_INFO_FREQUENCY
] = { .type
= NLA_U32
},
969 [NL80211_SURVEY_INFO_NOISE
] = { .type
= NLA_U8
},
972 if (!tb
[NL80211_ATTR_SURVEY_INFO
])
975 if (nla_parse_nested(si
, NL80211_SURVEY_INFO_MAX
,
976 tb
[NL80211_ATTR_SURVEY_INFO
], sp
))
979 if (!si
[NL80211_SURVEY_INFO_NOISE
])
982 if (!*noise
|| si
[NL80211_SURVEY_INFO_IN_USE
])
983 *noise
= (int8_t)nla_get_u8(si
[NL80211_SURVEY_INFO_NOISE
]);
989 int nl80211_get_noise(const char *ifname
, int *buf
)
992 struct nl80211_msg_conveyor
*req
;
994 req
= nl80211_msg(ifname
, NL80211_CMD_GET_SURVEY
, NLM_F_DUMP
);
999 nl80211_send(req
, nl80211_get_noise_cb
, &noise
);
1012 int nl80211_get_quality(const char *ifname
, int *buf
)
1016 if (wext_get_quality(ifname
, buf
))
1020 if (!nl80211_get_signal(ifname
, &signal
))
1022 /* A positive signal level is usually just a quality
1023 * value, pass through as-is */
1029 /* The cfg80211 wext compat layer assumes a signal range
1030 * of -110 dBm to -40 dBm, the quality value is derived
1031 * by adding 110 to the signal level */
1036 else if (signal
> -40)
1039 *buf
= (signal
+ 110);
1047 int nl80211_get_quality_max(const char *ifname
, int *buf
)
1049 if (wext_get_quality_max(ifname
, buf
))
1050 /* The cfg80211 wext compat layer assumes a maximum
1057 int nl80211_get_encryption(const char *ifname
, char *buf
)
1062 struct iwinfo_crypto_entry
*c
= (struct iwinfo_crypto_entry
*)buf
;
1064 /* WPA supplicant */
1065 if ((res
= nl80211_wpactl_info(ifname
, "STATUS", NULL
)) &&
1066 (val
= nl80211_getval(NULL
, res
, "pairwise_cipher")))
1069 if (strstr(val
, "WEP"))
1071 if (strstr(val
, "WEP-40"))
1072 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1074 else if (strstr(val
, "WEP-104"))
1075 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1078 c
->group_ciphers
= c
->pair_ciphers
;
1080 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1081 c
->auth_algs
|= IWINFO_AUTH_OPEN
; /* XXX: assumption */
1087 if (strstr(val
, "TKIP"))
1088 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1090 else if (strstr(val
, "CCMP"))
1091 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1093 else if (strstr(val
, "NONE"))
1094 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1096 else if (strstr(val
, "WEP-40"))
1097 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1099 else if (strstr(val
, "WEP-104"))
1100 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1103 if ((val
= nl80211_getval(NULL
, res
, "group_cipher")))
1105 if (strstr(val
, "TKIP"))
1106 c
->group_ciphers
|= IWINFO_CIPHER_TKIP
;
1108 else if (strstr(val
, "CCMP"))
1109 c
->group_ciphers
|= IWINFO_CIPHER_CCMP
;
1111 else if (strstr(val
, "NONE"))
1112 c
->group_ciphers
|= IWINFO_CIPHER_NONE
;
1114 else if (strstr(val
, "WEP-40"))
1115 c
->group_ciphers
|= IWINFO_CIPHER_WEP40
;
1117 else if (strstr(val
, "WEP-104"))
1118 c
->group_ciphers
|= IWINFO_CIPHER_WEP104
;
1122 if ((val
= nl80211_getval(NULL
, res
, "key_mgmt")))
1124 if (strstr(val
, "WPA2"))
1127 else if (strstr(val
, "WPA"))
1131 if (strstr(val
, "PSK"))
1132 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1134 else if (strstr(val
, "EAP") || strstr(val
, "802.1X"))
1135 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1137 else if (strstr(val
, "NONE"))
1138 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1141 c
->enabled
= (c
->wpa_version
&& c
->auth_suites
) ? 1 : 0;
1148 else if ((res
= nl80211_hostapd_info(ifname
)))
1150 if ((val
= nl80211_getval(ifname
, res
, "wpa")) != NULL
)
1151 c
->wpa_version
= atoi(val
);
1153 val
= nl80211_getval(ifname
, res
, "wpa_key_mgmt");
1155 if (!val
|| strstr(val
, "PSK"))
1156 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1158 if (val
&& strstr(val
, "EAP"))
1159 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1161 if (val
&& strstr(val
, "NONE"))
1162 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1164 if ((val
= nl80211_getval(ifname
, res
, "wpa_pairwise")) != NULL
)
1166 if (strstr(val
, "TKIP"))
1167 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1169 if (strstr(val
, "CCMP"))
1170 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1172 if (strstr(val
, "NONE"))
1173 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1176 if ((val
= nl80211_getval(ifname
, res
, "auth_algs")) != NULL
)
1180 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1184 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1188 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1189 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1196 for (i
= 0; i
< 4; i
++)
1198 snprintf(k
, sizeof(k
), "wep_key%d", i
);
1200 if ((val
= nl80211_getval(ifname
, res
, k
)))
1202 if ((strlen(val
) == 5) || (strlen(val
) == 10))
1203 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1205 else if ((strlen(val
) == 13) || (strlen(val
) == 26))
1206 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1211 c
->group_ciphers
= c
->pair_ciphers
;
1212 c
->enabled
= (c
->wpa_version
|| c
->pair_ciphers
) ? 1 : 0;
1221 static int nl80211_get_assoclist_cb(struct nl_msg
*msg
, void *arg
)
1223 struct nl80211_array_buf
*arr
= arg
;
1224 struct iwinfo_assoclist_entry
*e
= arr
->buf
;
1225 struct nlattr
**attr
= nl80211_parse(msg
);
1226 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1227 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
1229 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1230 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1231 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1232 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1233 [NL80211_STA_INFO_RX_BITRATE
] = { .type
= NLA_NESTED
},
1234 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1235 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1238 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
1239 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
1240 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
1241 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
1242 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
1245 /* advance to end of array */
1247 memset(e
, 0, sizeof(*e
));
1249 if (attr
[NL80211_ATTR_MAC
])
1250 memcpy(e
->mac
, nla_data(attr
[NL80211_ATTR_MAC
]), 6);
1252 if (attr
[NL80211_ATTR_STA_INFO
] &&
1253 !nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1254 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
1256 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
1257 e
->signal
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1259 if (sinfo
[NL80211_STA_INFO_INACTIVE_TIME
])
1260 e
->inactive
= nla_get_u32(sinfo
[NL80211_STA_INFO_INACTIVE_TIME
]);
1262 if (sinfo
[NL80211_STA_INFO_RX_PACKETS
])
1263 e
->rx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_RX_PACKETS
]);
1265 if (sinfo
[NL80211_STA_INFO_TX_PACKETS
])
1266 e
->tx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_PACKETS
]);
1268 if (sinfo
[NL80211_STA_INFO_RX_BITRATE
] &&
1269 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1270 sinfo
[NL80211_STA_INFO_RX_BITRATE
], rate_policy
))
1272 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
1274 nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]) * 100;
1276 if (rinfo
[NL80211_RATE_INFO_MCS
])
1277 e
->rx_rate
.mcs
= nla_get_u8(rinfo
[NL80211_RATE_INFO_MCS
]);
1279 if (rinfo
[NL80211_RATE_INFO_40_MHZ_WIDTH
])
1280 e
->rx_rate
.is_40mhz
= 1;
1282 if (rinfo
[NL80211_RATE_INFO_SHORT_GI
])
1283 e
->rx_rate
.is_short_gi
= 1;
1286 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
] &&
1287 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1288 sinfo
[NL80211_STA_INFO_TX_BITRATE
], rate_policy
))
1290 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
1292 nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]) * 100;
1294 if (rinfo
[NL80211_RATE_INFO_MCS
])
1295 e
->tx_rate
.mcs
= nla_get_u8(rinfo
[NL80211_RATE_INFO_MCS
]);
1297 if (rinfo
[NL80211_RATE_INFO_40_MHZ_WIDTH
])
1298 e
->tx_rate
.is_40mhz
= 1;
1300 if (rinfo
[NL80211_RATE_INFO_SHORT_GI
])
1301 e
->tx_rate
.is_short_gi
= 1;
1305 e
->noise
= 0; /* filled in by caller */
1311 int nl80211_get_assoclist(const char *ifname
, char *buf
, int *len
)
1316 struct nl80211_msg_conveyor
*req
;
1317 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
1318 struct iwinfo_assoclist_entry
*e
;
1320 if ((d
= opendir("/sys/class/net")) != NULL
)
1322 while ((de
= readdir(d
)) != NULL
)
1324 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
1325 (!de
->d_name
[strlen(ifname
)] ||
1326 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
1328 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
1333 nl80211_send(req
, nl80211_get_assoclist_cb
, &arr
);
1341 if (!nl80211_get_noise(ifname
, &noise
))
1342 for (i
= 0, e
= arr
.buf
; i
< arr
.count
; i
++, e
++)
1345 *len
= (arr
.count
* sizeof(struct iwinfo_assoclist_entry
));
1352 static int nl80211_get_txpwrlist_cb(struct nl_msg
*msg
, void *arg
)
1355 int ch_cur
, ch_cmp
, bands_remain
, freqs_remain
;
1357 struct nlattr
**attr
= nl80211_parse(msg
);
1358 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1359 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1360 struct nlattr
*band
, *freq
;
1362 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
1363 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
1364 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
1365 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
1366 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
1367 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
1368 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
1371 ch_cur
= *dbm_max
; /* value int* is initialized with channel by caller */
1374 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1376 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1377 nla_len(band
), NULL
);
1379 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1381 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1382 nla_data(freq
), nla_len(freq
), freq_policy
);
1384 ch_cmp
= nl80211_freq2channel(nla_get_u32(
1385 freqs
[NL80211_FREQUENCY_ATTR_FREQ
]));
1387 if ((!ch_cur
|| (ch_cmp
== ch_cur
)) &&
1388 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
])
1390 *dbm_max
= (int)(0.01 * nla_get_u32(
1391 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
]));
1401 int nl80211_get_txpwrlist(const char *ifname
, char *buf
, int *len
)
1404 int dbm_max
= -1, dbm_cur
, dbm_cnt
;
1405 struct nl80211_msg_conveyor
*req
;
1406 struct iwinfo_txpwrlist_entry entry
;
1408 if (nl80211_get_channel(ifname
, &ch_cur
))
1411 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1414 /* initialize the value pointer with channel for callback */
1417 nl80211_send(req
, nl80211_get_txpwrlist_cb
, &dbm_max
);
1423 for (dbm_cur
= 0, dbm_cnt
= 0;
1425 dbm_cur
++, dbm_cnt
++)
1427 entry
.dbm
= dbm_cur
;
1428 entry
.mw
= iwinfo_dbm2mw(dbm_cur
);
1430 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1433 entry
.dbm
= dbm_max
;
1434 entry
.mw
= iwinfo_dbm2mw(dbm_max
);
1436 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1439 *len
= dbm_cnt
* sizeof(entry
);
1446 static void nl80211_get_scancrypto(const char *spec
,
1447 struct iwinfo_crypto_entry
*c
)
1449 if (strstr(spec
, "WPA") || strstr(spec
, "WEP"))
1453 if (strstr(spec
, "WPA2-") && strstr(spec
, "WPA-"))
1456 else if (strstr(spec
, "WPA2"))
1459 else if (strstr(spec
, "WPA"))
1462 else if (strstr(spec
, "WEP"))
1463 c
->auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
1466 if (strstr(spec
, "PSK"))
1467 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1469 if (strstr(spec
, "802.1X") || strstr(spec
, "EAP"))
1470 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1472 if (strstr(spec
, "WPA-NONE"))
1473 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1476 if (strstr(spec
, "TKIP"))
1477 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1479 if (strstr(spec
, "CCMP"))
1480 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1482 if (strstr(spec
, "WEP-40"))
1483 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1485 if (strstr(spec
, "WEP-104"))
1486 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1488 c
->group_ciphers
= c
->pair_ciphers
;
1497 struct nl80211_scanlist
{
1498 struct iwinfo_scanlist_entry
*e
;
1503 static void nl80211_get_scanlist_ie(struct nlattr
**bss
,
1504 struct iwinfo_scanlist_entry
*e
)
1506 int ielen
= nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1507 unsigned char *ie
= nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1508 static unsigned char ms_oui
[3] = { 0x00, 0x50, 0xf2 };
1510 while (ielen
>= 2 && ielen
>= ie
[1])
1515 memcpy(e
->ssid
, ie
+ 2, min(ie
[1], IWINFO_ESSID_MAX_SIZE
));
1519 iwinfo_parse_rsn(&e
->crypto
, ie
+ 2, ie
[1],
1520 IWINFO_CIPHER_CCMP
, IWINFO_KMGMT_8021x
);
1523 case 221: /* Vendor */
1524 if (ie
[1] >= 4 && !memcmp(ie
+ 2, ms_oui
, 3) && ie
[5] == 1)
1525 iwinfo_parse_rsn(&e
->crypto
, ie
+ 6, ie
[1] - 4,
1526 IWINFO_CIPHER_TKIP
, IWINFO_KMGMT_PSK
);
1535 static int nl80211_get_scanlist_cb(struct nl_msg
*msg
, void *arg
)
1540 struct nl80211_scanlist
*sl
= arg
;
1541 struct nlattr
**tb
= nl80211_parse(msg
);
1542 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
1544 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
1545 [NL80211_BSS_TSF
] = { .type
= NLA_U64
},
1546 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
1547 [NL80211_BSS_BSSID
] = { },
1548 [NL80211_BSS_BEACON_INTERVAL
] = { .type
= NLA_U16
},
1549 [NL80211_BSS_CAPABILITY
] = { .type
= NLA_U16
},
1550 [NL80211_BSS_INFORMATION_ELEMENTS
] = { },
1551 [NL80211_BSS_SIGNAL_MBM
] = { .type
= NLA_U32
},
1552 [NL80211_BSS_SIGNAL_UNSPEC
] = { .type
= NLA_U8
},
1553 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
1554 [NL80211_BSS_SEEN_MS_AGO
] = { .type
= NLA_U32
},
1555 [NL80211_BSS_BEACON_IES
] = { },
1558 if (!tb
[NL80211_ATTR_BSS
] ||
1559 nla_parse_nested(bss
, NL80211_BSS_MAX
, tb
[NL80211_ATTR_BSS
],
1561 !bss
[NL80211_BSS_BSSID
])
1566 if (bss
[NL80211_BSS_CAPABILITY
])
1567 caps
= nla_get_u16(bss
[NL80211_BSS_CAPABILITY
]);
1571 memset(sl
->e
, 0, sizeof(*sl
->e
));
1572 memcpy(sl
->e
->mac
, nla_data(bss
[NL80211_BSS_BSSID
]), 6);
1575 sl
->e
->mode
= IWINFO_OPMODE_ADHOC
;
1577 sl
->e
->mode
= IWINFO_OPMODE_MASTER
;
1580 sl
->e
->crypto
.enabled
= 1;
1582 if (bss
[NL80211_BSS_FREQUENCY
])
1583 sl
->e
->channel
= nl80211_freq2channel(nla_get_u32(
1584 bss
[NL80211_BSS_FREQUENCY
]));
1586 if (bss
[NL80211_BSS_INFORMATION_ELEMENTS
])
1587 nl80211_get_scanlist_ie(bss
, sl
->e
);
1589 if (bss
[NL80211_BSS_SIGNAL_MBM
])
1592 (uint8_t)((int32_t)nla_get_u32(bss
[NL80211_BSS_SIGNAL_MBM
]) / 100);
1594 rssi
= sl
->e
->signal
- 0x100;
1598 else if (rssi
> -40)
1601 sl
->e
->quality
= (rssi
+ 110);
1602 sl
->e
->quality_max
= 70;
1605 if (sl
->e
->crypto
.enabled
&& !sl
->e
->crypto
.wpa_version
)
1607 sl
->e
->crypto
.auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
1608 sl
->e
->crypto
.pair_ciphers
= IWINFO_CIPHER_WEP40
| IWINFO_CIPHER_WEP104
;
1617 static int nl80211_get_scanlist_nl(const char *ifname
, char *buf
, int *len
)
1619 struct nl80211_msg_conveyor
*req
;
1620 struct nl80211_scanlist sl
= { .e
= (struct iwinfo_scanlist_entry
*)buf
};
1622 req
= nl80211_msg(ifname
, NL80211_CMD_TRIGGER_SCAN
, 0);
1625 nl80211_send(req
, NULL
, NULL
);
1629 nl80211_wait("nl80211", "scan", NL80211_CMD_NEW_SCAN_RESULTS
);
1631 req
= nl80211_msg(ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
1634 nl80211_send(req
, nl80211_get_scanlist_cb
, &sl
);
1638 *len
= sl
.len
* sizeof(struct iwinfo_scanlist_entry
);
1639 return *len
? 0 : -1;
1642 int nl80211_get_scanlist(const char *ifname
, char *buf
, int *len
)
1644 int freq
, rssi
, qmax
, count
;
1646 char ssid
[128] = { 0 };
1647 char bssid
[18] = { 0 };
1648 char cipher
[256] = { 0 };
1650 /* Got a radioX pseudo interface, find some interface on it or create one */
1651 if (!strncmp(ifname
, "radio", 5))
1653 /* Reuse existing interface */
1654 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
1656 return nl80211_get_scanlist(res
, buf
, len
);
1659 /* Need to spawn a temporary iface for scanning */
1660 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
1662 count
= nl80211_get_scanlist(res
, buf
, len
);
1668 struct iwinfo_scanlist_entry
*e
= (struct iwinfo_scanlist_entry
*)buf
;
1670 /* WPA supplicant */
1671 if ((res
= nl80211_wpactl_info(ifname
, "SCAN", "CTRL-EVENT-SCAN-RESULTS")))
1673 if ((res
= nl80211_wpactl_info(ifname
, "SCAN_RESULTS", NULL
)))
1675 nl80211_get_quality_max(ifname
, &qmax
);
1677 /* skip header line */
1678 while (*res
++ != '\n');
1682 while (sscanf(res
, "%17s %d %d %255s%*[ \t]%127[^\n]\n",
1683 bssid
, &freq
, &rssi
, cipher
, ssid
) > 0)
1686 e
->mac
[0] = strtol(&bssid
[0], NULL
, 16);
1687 e
->mac
[1] = strtol(&bssid
[3], NULL
, 16);
1688 e
->mac
[2] = strtol(&bssid
[6], NULL
, 16);
1689 e
->mac
[3] = strtol(&bssid
[9], NULL
, 16);
1690 e
->mac
[4] = strtol(&bssid
[12], NULL
, 16);
1691 e
->mac
[5] = strtol(&bssid
[15], NULL
, 16);
1694 memcpy(e
->ssid
, ssid
, min(strlen(ssid
), sizeof(e
->ssid
) - 1));
1696 /* Mode (assume master) */
1697 e
->mode
= IWINFO_OPMODE_MASTER
;
1700 e
->channel
= nl80211_freq2channel(freq
);
1708 /* The cfg80211 wext compat layer assumes a signal range
1709 * of -110 dBm to -40 dBm, the quality value is derived
1710 * by adding 110 to the signal level */
1713 else if (rssi
> -40)
1716 e
->quality
= (rssi
+ 110);
1724 e
->quality_max
= qmax
;
1727 nl80211_get_scancrypto(cipher
, &e
->crypto
);
1729 /* advance to next line */
1730 while (*res
&& *res
++ != '\n');
1735 memset(ssid
, 0, sizeof(ssid
));
1736 memset(bssid
, 0, sizeof(bssid
));
1737 memset(cipher
, 0, sizeof(cipher
));
1740 *len
= count
* sizeof(struct iwinfo_scanlist_entry
);
1748 /* Got a temp interface, don't create yet another one */
1749 if (!strncmp(ifname
, "tmp.", 4))
1751 if (!iwinfo_ifup(ifname
))
1754 nl80211_get_scanlist_nl(ifname
, buf
, len
);
1755 iwinfo_ifdown(ifname
);
1759 /* Spawn a new scan interface */
1762 if (!(res
= nl80211_ifadd(ifname
)))
1765 if (!iwinfo_ifmac(res
))
1768 /* if we can take the new interface up, the driver supports an
1769 * additional interface and there's no need to tear down the ap */
1770 if (iwinfo_ifup(res
))
1772 nl80211_get_scanlist_nl(res
, buf
, len
);
1776 /* driver cannot create secondary interface, take down ap
1778 else if (iwinfo_ifdown(ifname
) && iwinfo_ifup(res
))
1780 nl80211_get_scanlist_nl(res
, buf
, len
);
1782 iwinfo_ifup(ifname
);
1783 nl80211_hostapd_hup(ifname
);
1795 static int nl80211_get_freqlist_cb(struct nl_msg
*msg
, void *arg
)
1797 int bands_remain
, freqs_remain
;
1799 struct nl80211_array_buf
*arr
= arg
;
1800 struct iwinfo_freqlist_entry
*e
= arr
->buf
;
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 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1818 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
1819 nla_data(band
), nla_len(band
), NULL
);
1821 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1823 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1824 nla_data(freq
), nla_len(freq
), NULL
);
1826 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
] ||
1827 freqs
[NL80211_FREQUENCY_ATTR_DISABLED
])
1830 e
->mhz
= nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]);
1831 e
->channel
= nl80211_freq2channel(e
->mhz
);
1834 freqs
[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] ||
1835 freqs
[NL80211_FREQUENCY_ATTR_NO_IBSS
] ||
1836 freqs
[NL80211_FREQUENCY_ATTR_RADAR
]
1847 int nl80211_get_freqlist(const char *ifname
, char *buf
, int *len
)
1849 struct nl80211_msg_conveyor
*req
;
1850 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
1852 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1855 nl80211_send(req
, nl80211_get_freqlist_cb
, &arr
);
1861 *len
= arr
.count
* sizeof(struct iwinfo_freqlist_entry
);
1868 static int nl80211_get_country_cb(struct nl_msg
*msg
, void *arg
)
1871 struct nlattr
**attr
= nl80211_parse(msg
);
1873 if (attr
[NL80211_ATTR_REG_ALPHA2
])
1874 memcpy(buf
, nla_data(attr
[NL80211_ATTR_REG_ALPHA2
]), 2);
1881 int nl80211_get_country(const char *ifname
, char *buf
)
1884 struct nl80211_msg_conveyor
*req
;
1886 req
= nl80211_msg(ifname
, NL80211_CMD_GET_REG
, 0);
1889 nl80211_send(req
, nl80211_get_country_cb
, buf
);
1899 int nl80211_get_countrylist(const char *ifname
, char *buf
, int *len
)
1902 struct iwinfo_country_entry
*e
= (struct iwinfo_country_entry
*)buf
;
1903 const struct iwinfo_iso3166_label
*l
;
1905 for (l
= IWINFO_ISO3166_NAMES
, count
= 0; l
->iso3166
; l
++, e
++, count
++)
1907 e
->iso3166
= l
->iso3166
;
1908 e
->ccode
[0] = (l
->iso3166
/ 256);
1909 e
->ccode
[1] = (l
->iso3166
% 256);
1912 *len
= (count
* sizeof(struct iwinfo_country_entry
));
1916 static int nl80211_get_hwmodelist_cb(struct nl_msg
*msg
, void *arg
)
1919 int bands_remain
, freqs_remain
;
1921 struct nlattr
**attr
= nl80211_parse(msg
);
1922 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1923 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1924 struct nlattr
*band
, *freq
;
1928 if (attr
[NL80211_ATTR_WIPHY_BANDS
])
1930 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1932 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
1933 nla_data(band
), nla_len(band
), NULL
);
1935 if (bands
[NL80211_BAND_ATTR_HT_CAPA
])
1936 caps
= nla_get_u16(bands
[NL80211_BAND_ATTR_HT_CAPA
]);
1938 /* Treat any nonzero capability as 11n */
1940 *modes
|= IWINFO_80211_N
;
1942 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
],
1945 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1946 nla_data(freq
), nla_len(freq
), NULL
);
1948 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
])
1951 if (nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]) < 2485)
1953 *modes
|= IWINFO_80211_B
;
1954 *modes
|= IWINFO_80211_G
;
1958 *modes
|= IWINFO_80211_A
;
1967 int nl80211_get_hwmodelist(const char *ifname
, int *buf
)
1969 struct nl80211_msg_conveyor
*req
;
1971 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1974 nl80211_send(req
, nl80211_get_hwmodelist_cb
, buf
);
1978 return *buf
? 0 : -1;
1981 int nl80211_get_mbssid_support(const char *ifname
, int *buf
)
1983 /* Test whether we can create another interface */
1984 char *nif
= nl80211_ifadd(ifname
);
1988 *buf
= (iwinfo_ifmac(nif
) && iwinfo_ifup(nif
));
1999 int nl80211_get_hardware_id(const char *ifname
, char *buf
)
2004 /* Got a radioX pseudo interface, find some interface on it or create one */
2005 if (!strncmp(ifname
, "radio", 5))
2007 /* Reuse existing interface */
2008 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
2010 rv
= wext_get_hardware_id(res
, buf
);
2013 /* Need to spawn a temporary iface for finding IDs */
2014 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
2016 rv
= wext_get_hardware_id(res
, buf
);
2022 rv
= wext_get_hardware_id(ifname
, buf
);
2025 /* Failed to obtain hardware IDs, search board config */
2028 rv
= iwinfo_hardware_id_from_mtd((struct iwinfo_hardware_id
*)buf
);
2034 static const struct iwinfo_hardware_entry
*
2035 nl80211_get_hardware_entry(const char *ifname
)
2037 struct iwinfo_hardware_id id
;
2039 if (nl80211_get_hardware_id(ifname
, (char *)&id
))
2042 return iwinfo_hardware(&id
);
2045 int nl80211_get_hardware_name(const char *ifname
, char *buf
)
2047 const struct iwinfo_hardware_entry
*hw
;
2049 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2050 sprintf(buf
, "Generic MAC80211");
2052 sprintf(buf
, "%s %s", hw
->vendor_name
, hw
->device_name
);
2057 int nl80211_get_txpower_offset(const char *ifname
, int *buf
)
2059 const struct iwinfo_hardware_entry
*hw
;
2061 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2064 *buf
= hw
->txpower_offset
;
2068 int nl80211_get_frequency_offset(const char *ifname
, int *buf
)
2070 const struct iwinfo_hardware_entry
*hw
;
2072 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2075 *buf
= hw
->frequency_offset
;