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 memset(nls
, 0, sizeof(*nls
));
46 nls
->nl_sock
= nl_socket_alloc();
52 if (genl_connect(nls
->nl_sock
)) {
57 fd
= nl_socket_get_fd(nls
->nl_sock
);
58 if (fcntl(fd
, F_SETFD
, fcntl(fd
, F_GETFD
) | FD_CLOEXEC
) < 0) {
63 if (genl_ctrl_alloc_cache(nls
->nl_sock
, &nls
->nl_cache
)) {
68 nls
->nl80211
= genl_ctrl_search_by_name(nls
->nl_cache
, "nl80211");
74 nls
->nlctrl
= genl_ctrl_search_by_name(nls
->nl_cache
, "nlctrl");
90 static int nl80211_msg_error(struct sockaddr_nl
*nla
,
91 struct nlmsgerr
*err
, void *arg
)
98 static int nl80211_msg_finish(struct nl_msg
*msg
, void *arg
)
105 static int nl80211_msg_ack(struct nl_msg
*msg
, void *arg
)
112 static int nl80211_msg_response(struct nl_msg
*msg
, void *arg
)
117 static void nl80211_free(struct nl80211_msg_conveyor
*cv
)
132 static struct nl80211_msg_conveyor
* nl80211_new(struct genl_family
*family
,
135 static struct nl80211_msg_conveyor cv
;
137 struct nl_msg
*req
= NULL
;
138 struct nl_cb
*cb
= NULL
;
144 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
148 genlmsg_put(req
, 0, 0, genl_family_get_id(family
), 0, flags
, cmd
, 0);
166 static struct nl80211_msg_conveyor
* nl80211_ctl(int cmd
, int flags
)
168 if (nl80211_init() < 0)
171 return nl80211_new(nls
->nlctrl
, cmd
, flags
);
174 static struct nl80211_msg_conveyor
* nl80211_msg(const char *ifname
,
177 int ifidx
= -1, phyidx
= -1;
178 struct nl80211_msg_conveyor
*cv
;
180 if (nl80211_init() < 0)
183 if (!strncmp(ifname
, "phy", 3))
184 phyidx
= atoi(&ifname
[3]);
185 else if (!strncmp(ifname
, "radio", 5))
186 phyidx
= atoi(&ifname
[5]);
187 else if (!strncmp(ifname
, "mon.", 4))
188 ifidx
= if_nametoindex(&ifname
[4]);
190 ifidx
= if_nametoindex(ifname
);
192 if ((ifidx
< 0) && (phyidx
< 0))
195 cv
= nl80211_new(nls
->nl80211
, cmd
, flags
);
200 NLA_PUT_U32(cv
->msg
, NL80211_ATTR_IFINDEX
, ifidx
);
203 NLA_PUT_U32(cv
->msg
, NL80211_ATTR_WIPHY
, phyidx
);
212 static struct nl80211_msg_conveyor
* nl80211_send(
213 struct nl80211_msg_conveyor
*cv
,
214 int (*cb_func
)(struct nl_msg
*, void *), void *cb_arg
216 static struct nl80211_msg_conveyor rcv
;
220 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_func
, cb_arg
);
222 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_msg_response
, &rcv
);
224 if (nl_send_auto_complete(nls
->nl_sock
, cv
->msg
) < 0)
227 nl_cb_err(cv
->cb
, NL_CB_CUSTOM
, nl80211_msg_error
, &err
);
228 nl_cb_set(cv
->cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, nl80211_msg_finish
, &err
);
229 nl_cb_set(cv
->cb
, NL_CB_ACK
, NL_CB_CUSTOM
, nl80211_msg_ack
, &err
);
232 nl_recvmsgs(nls
->nl_sock
, cv
->cb
);
243 static struct nlattr
** nl80211_parse(struct nl_msg
*msg
)
245 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
246 static struct nlattr
*attr
[NL80211_ATTR_MAX
+ 1];
248 nla_parse(attr
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
249 genlmsg_attrlen(gnlh
, 0), NULL
);
255 static int nl80211_subscribe_cb(struct nl_msg
*msg
, void *arg
)
257 struct nl80211_group_conveyor
*cv
= arg
;
259 struct nlattr
**attr
= nl80211_parse(msg
);
260 struct nlattr
*mgrpinfo
[CTRL_ATTR_MCAST_GRP_MAX
+ 1];
264 if (!attr
[CTRL_ATTR_MCAST_GROUPS
])
267 nla_for_each_nested(mgrp
, attr
[CTRL_ATTR_MCAST_GROUPS
], mgrpidx
)
269 nla_parse(mgrpinfo
, CTRL_ATTR_MCAST_GRP_MAX
,
270 nla_data(mgrp
), nla_len(mgrp
), NULL
);
272 if (mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
] &&
273 mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
] &&
274 !strncmp(nla_data(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
]),
275 cv
->name
, nla_len(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
])))
277 cv
->id
= nla_get_u32(mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
]);
285 static int nl80211_subscribe(const char *family
, const char *group
)
287 struct nl80211_group_conveyor cv
= { .name
= group
, .id
= -ENOENT
};
288 struct nl80211_msg_conveyor
*req
;
290 req
= nl80211_ctl(CTRL_CMD_GETFAMILY
, 0);
293 NLA_PUT_STRING(req
->msg
, CTRL_ATTR_FAMILY_NAME
, family
);
294 nl80211_send(req
, nl80211_subscribe_cb
, &cv
);
300 return nl_socket_add_membership(nls
->nl_sock
, cv
.id
);
304 static int nl80211_wait_cb(struct nl_msg
*msg
, void *arg
)
306 struct nl80211_event_conveyor
*cv
= arg
;
307 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
309 if (gnlh
->cmd
== cv
->wait
)
310 cv
->recv
= gnlh
->cmd
;
315 static int nl80211_wait_seq_check(struct nl_msg
*msg
, void *arg
)
320 static int nl80211_wait(const char *family
, const char *group
, int cmd
)
322 struct nl80211_event_conveyor cv
= { .wait
= cmd
};
325 if (nl80211_subscribe(family
, group
))
328 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
333 nl_cb_set(cb
, NL_CB_SEQ_CHECK
, NL_CB_CUSTOM
, nl80211_wait_seq_check
, NULL
);
334 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_wait_cb
, &cv
);
337 nl_recvmsgs(nls
->nl_sock
, cb
);
345 static int nl80211_freq2channel(int freq
)
351 return (freq
- 2407) / 5;
353 return (freq
/ 5) - 1000;
356 static int nl80211_channel2freq(int channel
, const char *band
)
361 if ((channel
< 14) && (!band
|| band
[0] != 'a'))
362 return (channel
* 5) + 2407;
365 return (1000 + channel
) * 5;
370 static char * nl80211_getval(const char *ifname
, const char *buf
, const char *key
)
373 char lkey
[64] = { 0 };
374 const char *ln
= buf
;
375 static char lval
[256] = { 0 };
377 int matched_if
= ifname
? 0 : 1;
380 for( i
= 0, len
= strlen(buf
); i
< len
; i
++ )
382 if (!lkey
[0] && (buf
[i
] == ' ' || buf
[i
] == '\t'))
386 else if (!lkey
[0] && (buf
[i
] == '='))
388 if ((&buf
[i
] - ln
) > 0)
389 memcpy(lkey
, ln
, min(sizeof(lkey
) - 1, &buf
[i
] - ln
));
391 else if (buf
[i
] == '\n')
395 memcpy(lval
, ln
+ strlen(lkey
) + 1,
396 min(sizeof(lval
) - 1, &buf
[i
] - ln
- strlen(lkey
) - 1));
398 if ((ifname
!= NULL
) &&
399 (!strcmp(lkey
, "interface") || !strcmp(lkey
, "bss")) )
401 matched_if
= !strcmp(lval
, ifname
);
403 else if (matched_if
&& !strcmp(lkey
, key
))
410 memset(lkey
, 0, sizeof(lkey
));
411 memset(lval
, 0, sizeof(lval
));
418 static int nl80211_ifname2phy_cb(struct nl_msg
*msg
, void *arg
)
421 struct nlattr
**attr
= nl80211_parse(msg
);
423 if (attr
[NL80211_ATTR_WIPHY_NAME
])
424 memcpy(buf
, nla_data(attr
[NL80211_ATTR_WIPHY_NAME
]),
425 nla_len(attr
[NL80211_ATTR_WIPHY_NAME
]));
432 static char * nl80211_ifname2phy(const char *ifname
)
434 static char phy
[32] = { 0 };
435 struct nl80211_msg_conveyor
*req
;
437 memset(phy
, 0, sizeof(phy
));
439 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
442 nl80211_send(req
, nl80211_ifname2phy_cb
, phy
);
446 return phy
[0] ? phy
: NULL
;
449 static char * nl80211_hostapd_info(const char *ifname
)
452 char path
[32] = { 0 };
453 static char buf
[4096] = { 0 };
456 if ((phy
= nl80211_ifname2phy(ifname
)) != NULL
)
458 snprintf(path
, sizeof(path
), "/var/run/hostapd-%s.conf", phy
);
460 if ((conf
= fopen(path
, "r")) != NULL
)
462 fread(buf
, sizeof(buf
) - 1, 1, conf
);
472 static inline int nl80211_wpactl_recv(int sock
, char *buf
, int blen
)
475 struct timeval tv
= { 2, 0 };
480 memset(buf
, 0, blen
);
483 if (select(sock
+ 1, &rfds
, NULL
, NULL
, &tv
) < 0)
486 if (!FD_ISSET(sock
, &rfds
))
489 return recv(sock
, buf
, blen
, 0);
492 static char * nl80211_wpactl_info(const char *ifname
, const char *cmd
,
498 size_t remote_length
, local_length
;
499 static char buffer
[10240] = { 0 };
501 struct sockaddr_un local
= { 0 };
502 struct sockaddr_un remote
= { 0 };
505 sock
= socket(PF_UNIX
, SOCK_DGRAM
, 0);
509 remote
.sun_family
= AF_UNIX
;
510 remote_length
= sizeof(remote
.sun_family
) + sprintf(remote
.sun_path
,
511 "/var/run/wpa_supplicant-%s/%s", ifname
, ifname
);
513 if (fcntl(sock
, F_SETFD
, fcntl(sock
, F_GETFD
) | FD_CLOEXEC
) < 0)
516 if (connect(sock
, (struct sockaddr
*) &remote
, remote_length
))
519 local
.sun_family
= AF_UNIX
;
520 local_length
= sizeof(local
.sun_family
) +
521 sprintf(local
.sun_path
, "/var/run/iwinfo-%s-%d", ifname
, getpid());
523 if (bind(sock
, (struct sockaddr
*) &local
, local_length
))
529 send(sock
, "ATTACH", 6, 0);
531 if (nl80211_wpactl_recv(sock
, buffer
, sizeof(buffer
)) <= 0)
536 send(sock
, cmd
, strlen(cmd
), 0);
538 while( numtry
++ < 5 )
540 if (nl80211_wpactl_recv(sock
, buffer
, sizeof(buffer
)) <= 0)
548 if ((!event
&& buffer
[0] != '<') || (event
&& strstr(buffer
, event
)))
557 if (local
.sun_family
)
558 unlink(local
.sun_path
);
563 static inline int nl80211_readint(const char *path
)
569 if ((fd
= open(path
, O_RDONLY
)) > -1)
571 if (read(fd
, buffer
, sizeof(buffer
)) > 0)
580 static char * nl80211_phy2ifname(const char *ifname
)
582 int fd
, ifidx
= -1, cifidx
= -1, phyidx
= -1;
584 static char nif
[IFNAMSIZ
] = { 0 };
591 else if (!strncmp(ifname
, "phy", 3))
592 phyidx
= atoi(&ifname
[3]);
593 else if (!strncmp(ifname
, "radio", 5))
594 phyidx
= atoi(&ifname
[5]);
596 memset(nif
, 0, sizeof(nif
));
600 if ((d
= opendir("/sys/class/net")) != NULL
)
602 while ((e
= readdir(d
)) != NULL
)
604 snprintf(buffer
, sizeof(buffer
),
605 "/sys/class/net/%s/phy80211/index", e
->d_name
);
607 if (nl80211_readint(buffer
) == phyidx
)
609 snprintf(buffer
, sizeof(buffer
),
610 "/sys/class/net/%s/ifindex", e
->d_name
);
612 if ((cifidx
= nl80211_readint(buffer
)) >= 0 &&
613 ((ifidx
< 0) || (cifidx
< ifidx
)))
616 strncpy(nif
, e
->d_name
, sizeof(nif
));
625 return nif
[0] ? nif
: NULL
;
628 static char * nl80211_ifadd(const char *ifname
)
632 static char nif
[IFNAMSIZ
] = { 0 };
633 struct nl80211_msg_conveyor
*req
, *res
;
635 req
= nl80211_msg(ifname
, NL80211_CMD_NEW_INTERFACE
, 0);
638 snprintf(nif
, sizeof(nif
), "tmp.%s", ifname
);
640 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, nif
);
641 NLA_PUT_U32(req
->msg
, NL80211_ATTR_IFTYPE
, NL80211_IFTYPE_STATION
);
643 nl80211_send(req
, NULL
, NULL
);
654 static void nl80211_ifdel(const char *ifname
)
656 struct nl80211_msg_conveyor
*req
;
658 req
= nl80211_msg(ifname
, NL80211_CMD_DEL_INTERFACE
, 0);
661 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, ifname
);
663 nl80211_send(req
, NULL
, NULL
);
670 static void nl80211_hostapd_hup(const char *ifname
)
674 char *phy
= nl80211_ifname2phy(ifname
);
678 snprintf(buf
, sizeof(buf
), "/var/run/wifi-%s.pid", phy
);
679 if ((fd
= open(buf
, O_RDONLY
)) > 0)
681 if (read(fd
, buf
, sizeof(buf
)) > 0)
693 int nl80211_probe(const char *ifname
)
695 return !!nl80211_ifname2phy(ifname
);
698 void nl80211_close(void)
703 genl_family_put(nls
->nlctrl
);
706 genl_family_put(nls
->nl80211
);
709 nl_socket_free(nls
->nl_sock
);
712 nl_cache_free(nls
->nl_cache
);
719 int nl80211_get_mode(const char *ifname
, int *buf
)
721 return wext_get_mode(ifname
, buf
);
724 int nl80211_get_ssid(const char *ifname
, char *buf
)
728 if (!wext_get_ssid(ifname
, buf
))
732 else if ((ssid
= nl80211_hostapd_info(ifname
)) &&
733 (ssid
= nl80211_getval(ifname
, ssid
, "ssid")))
735 memcpy(buf
, ssid
, strlen(ssid
));
742 int nl80211_get_bssid(const char *ifname
, char *buf
)
745 unsigned char mac
[6];
747 if (!wext_get_bssid(ifname
, buf
))
751 else if ((bssid
= nl80211_hostapd_info(ifname
)) &&
752 (bssid
= nl80211_getval(ifname
, bssid
, "bssid")))
754 mac
[0] = strtol(&bssid
[0], NULL
, 16);
755 mac
[1] = strtol(&bssid
[3], NULL
, 16);
756 mac
[2] = strtol(&bssid
[6], NULL
, 16);
757 mac
[3] = strtol(&bssid
[9], NULL
, 16);
758 mac
[4] = strtol(&bssid
[12], NULL
, 16);
759 mac
[5] = strtol(&bssid
[15], NULL
, 16);
761 sprintf(buf
, "%02X:%02X:%02X:%02X:%02X:%02X",
762 mac
[0], mac
[1], mac
[2], mac
[3], mac
[4], mac
[5]);
771 static int nl80211_get_frequency_cb(struct nl_msg
*msg
, void *arg
)
774 struct nlattr
**attr
= nl80211_parse(msg
);
775 struct nlattr
*binfo
[NL80211_BSS_MAX
+ 1];
777 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
778 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
781 if (attr
[NL80211_ATTR_BSS
] &&
782 !nla_parse_nested(binfo
, NL80211_BSS_MAX
,
783 attr
[NL80211_ATTR_BSS
], bss_policy
))
785 if (binfo
[NL80211_BSS_FREQUENCY
])
786 *freq
= nla_get_u32(binfo
[NL80211_BSS_FREQUENCY
]);
792 int nl80211_get_frequency(const char *ifname
, int *buf
)
795 struct nl80211_msg_conveyor
*req
;
799 if ((res
= nl80211_hostapd_info(ifname
)) &&
800 (channel
= nl80211_getval(NULL
, res
, "channel")))
802 *buf
= nl80211_channel2freq(atoi(channel
),
803 nl80211_getval(NULL
, res
, "hw_mode"));
807 res
= nl80211_phy2ifname(ifname
);
808 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
812 nl80211_send(req
, nl80211_get_frequency_cb
, buf
);
817 return (*buf
== 0) ? -1 : 0;
820 int nl80211_get_channel(const char *ifname
, int *buf
)
822 if (!nl80211_get_frequency(ifname
, buf
))
824 *buf
= nl80211_freq2channel(*buf
);
832 int nl80211_get_txpower(const char *ifname
, int *buf
)
834 return wext_get_txpower(ifname
, buf
);
838 static int nl80211_fill_signal_cb(struct nl_msg
*msg
, void *arg
)
842 struct nl80211_rssi_rate
*rr
= arg
;
843 struct nlattr
**attr
= nl80211_parse(msg
);
844 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
845 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
847 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
848 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
849 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
850 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
851 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
852 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
853 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
854 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
855 [NL80211_STA_INFO_LLID
] = { .type
= NLA_U16
},
856 [NL80211_STA_INFO_PLID
] = { .type
= NLA_U16
},
857 [NL80211_STA_INFO_PLINK_STATE
] = { .type
= NLA_U8
},
860 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
861 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
862 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
863 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
864 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
867 if (attr
[NL80211_ATTR_STA_INFO
])
869 if (!nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
870 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
872 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
874 dbm
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
875 rr
->rssi
= rr
->rssi
? (int8_t)((rr
->rssi
+ dbm
) / 2) : dbm
;
878 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
])
880 if (!nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
881 sinfo
[NL80211_STA_INFO_TX_BITRATE
],
884 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
886 mbit
= nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]);
888 ? (int16_t)((rr
->rate
+ mbit
) / 2) : mbit
;
898 static void nl80211_fill_signal(const char *ifname
, struct nl80211_rssi_rate
*r
)
902 struct nl80211_msg_conveyor
*req
;
907 if ((d
= opendir("/sys/class/net")) != NULL
)
909 while ((de
= readdir(d
)) != NULL
)
911 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
912 (!de
->d_name
[strlen(ifname
)] ||
913 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
915 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
920 nl80211_send(req
, nl80211_fill_signal_cb
, r
);
930 int nl80211_get_bitrate(const char *ifname
, int *buf
)
932 struct nl80211_rssi_rate rr
;
934 if (!wext_get_bitrate(ifname
, buf
))
937 nl80211_fill_signal(ifname
, &rr
);
941 *buf
= (rr
.rate
* 100);
948 int nl80211_get_signal(const char *ifname
, int *buf
)
950 struct nl80211_rssi_rate rr
;
952 if (!wext_get_signal(ifname
, buf
))
955 nl80211_fill_signal(ifname
, &rr
);
966 static int nl80211_get_noise_cb(struct nl_msg
*msg
, void *arg
)
969 struct nlattr
**tb
= nl80211_parse(msg
);
970 struct nlattr
*si
[NL80211_SURVEY_INFO_MAX
+ 1];
972 static struct nla_policy sp
[NL80211_SURVEY_INFO_MAX
+ 1] = {
973 [NL80211_SURVEY_INFO_FREQUENCY
] = { .type
= NLA_U32
},
974 [NL80211_SURVEY_INFO_NOISE
] = { .type
= NLA_U8
},
977 if (!tb
[NL80211_ATTR_SURVEY_INFO
])
980 if (nla_parse_nested(si
, NL80211_SURVEY_INFO_MAX
,
981 tb
[NL80211_ATTR_SURVEY_INFO
], sp
))
984 if (!si
[NL80211_SURVEY_INFO_NOISE
])
987 if (!*noise
|| si
[NL80211_SURVEY_INFO_IN_USE
])
988 *noise
= (int8_t)nla_get_u8(si
[NL80211_SURVEY_INFO_NOISE
]);
994 int nl80211_get_noise(const char *ifname
, int *buf
)
997 struct nl80211_msg_conveyor
*req
;
999 req
= nl80211_msg(ifname
, NL80211_CMD_GET_SURVEY
, NLM_F_DUMP
);
1004 nl80211_send(req
, nl80211_get_noise_cb
, &noise
);
1017 int nl80211_get_quality(const char *ifname
, int *buf
)
1021 if (wext_get_quality(ifname
, buf
))
1025 if (!nl80211_get_signal(ifname
, &signal
))
1027 /* A positive signal level is usually just a quality
1028 * value, pass through as-is */
1034 /* The cfg80211 wext compat layer assumes a signal range
1035 * of -110 dBm to -40 dBm, the quality value is derived
1036 * by adding 110 to the signal level */
1041 else if (signal
> -40)
1044 *buf
= (signal
+ 110);
1052 int nl80211_get_quality_max(const char *ifname
, int *buf
)
1054 if (wext_get_quality_max(ifname
, buf
))
1055 /* The cfg80211 wext compat layer assumes a maximum
1062 int nl80211_get_encryption(const char *ifname
, char *buf
)
1067 struct iwinfo_crypto_entry
*c
= (struct iwinfo_crypto_entry
*)buf
;
1069 /* WPA supplicant */
1070 if ((res
= nl80211_wpactl_info(ifname
, "STATUS", NULL
)) &&
1071 (val
= nl80211_getval(NULL
, res
, "pairwise_cipher")))
1074 if (strstr(val
, "WEP"))
1076 if (strstr(val
, "WEP-40"))
1077 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1079 else if (strstr(val
, "WEP-104"))
1080 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1083 c
->group_ciphers
= c
->pair_ciphers
;
1085 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1086 c
->auth_algs
|= IWINFO_AUTH_OPEN
; /* XXX: assumption */
1092 if (strstr(val
, "TKIP"))
1093 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1095 else if (strstr(val
, "CCMP"))
1096 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1098 else if (strstr(val
, "NONE"))
1099 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1101 else if (strstr(val
, "WEP-40"))
1102 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1104 else if (strstr(val
, "WEP-104"))
1105 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1108 if ((val
= nl80211_getval(NULL
, res
, "group_cipher")))
1110 if (strstr(val
, "TKIP"))
1111 c
->group_ciphers
|= IWINFO_CIPHER_TKIP
;
1113 else if (strstr(val
, "CCMP"))
1114 c
->group_ciphers
|= IWINFO_CIPHER_CCMP
;
1116 else if (strstr(val
, "NONE"))
1117 c
->group_ciphers
|= IWINFO_CIPHER_NONE
;
1119 else if (strstr(val
, "WEP-40"))
1120 c
->group_ciphers
|= IWINFO_CIPHER_WEP40
;
1122 else if (strstr(val
, "WEP-104"))
1123 c
->group_ciphers
|= IWINFO_CIPHER_WEP104
;
1127 if ((val
= nl80211_getval(NULL
, res
, "key_mgmt")))
1129 if (strstr(val
, "WPA2"))
1132 else if (strstr(val
, "WPA"))
1136 if (strstr(val
, "PSK"))
1137 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1139 else if (strstr(val
, "EAP") || strstr(val
, "802.1X"))
1140 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1142 else if (strstr(val
, "NONE"))
1143 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1146 c
->enabled
= (c
->wpa_version
&& c
->auth_suites
) ? 1 : 0;
1153 else if ((res
= nl80211_hostapd_info(ifname
)))
1155 if ((val
= nl80211_getval(ifname
, res
, "wpa")) != NULL
)
1156 c
->wpa_version
= atoi(val
);
1158 val
= nl80211_getval(ifname
, res
, "wpa_key_mgmt");
1160 if (!val
|| strstr(val
, "PSK"))
1161 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1163 if (val
&& strstr(val
, "EAP"))
1164 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1166 if (val
&& strstr(val
, "NONE"))
1167 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1169 if ((val
= nl80211_getval(ifname
, res
, "wpa_pairwise")) != NULL
)
1171 if (strstr(val
, "TKIP"))
1172 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1174 if (strstr(val
, "CCMP"))
1175 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1177 if (strstr(val
, "NONE"))
1178 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1181 if ((val
= nl80211_getval(ifname
, res
, "auth_algs")) != NULL
)
1185 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1189 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1193 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1194 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1201 for (i
= 0; i
< 4; i
++)
1203 snprintf(k
, sizeof(k
), "wep_key%d", i
);
1205 if ((val
= nl80211_getval(ifname
, res
, k
)))
1207 if ((strlen(val
) == 5) || (strlen(val
) == 10))
1208 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1210 else if ((strlen(val
) == 13) || (strlen(val
) == 26))
1211 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1216 c
->group_ciphers
= c
->pair_ciphers
;
1217 c
->enabled
= (c
->wpa_version
|| c
->pair_ciphers
) ? 1 : 0;
1226 static int nl80211_get_assoclist_cb(struct nl_msg
*msg
, void *arg
)
1228 struct nl80211_array_buf
*arr
= arg
;
1229 struct iwinfo_assoclist_entry
*e
= arr
->buf
;
1230 struct nlattr
**attr
= nl80211_parse(msg
);
1231 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1232 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
1234 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1235 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1236 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1237 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1238 [NL80211_STA_INFO_RX_BITRATE
] = { .type
= NLA_NESTED
},
1239 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1240 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1243 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
1244 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
1245 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
1246 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
1247 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
1250 /* advance to end of array */
1252 memset(e
, 0, sizeof(*e
));
1254 if (attr
[NL80211_ATTR_MAC
])
1255 memcpy(e
->mac
, nla_data(attr
[NL80211_ATTR_MAC
]), 6);
1257 if (attr
[NL80211_ATTR_STA_INFO
] &&
1258 !nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1259 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
1261 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
1262 e
->signal
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1264 if (sinfo
[NL80211_STA_INFO_INACTIVE_TIME
])
1265 e
->inactive
= nla_get_u32(sinfo
[NL80211_STA_INFO_INACTIVE_TIME
]);
1267 if (sinfo
[NL80211_STA_INFO_RX_PACKETS
])
1268 e
->rx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_RX_PACKETS
]);
1270 if (sinfo
[NL80211_STA_INFO_TX_PACKETS
])
1271 e
->tx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_PACKETS
]);
1273 if (sinfo
[NL80211_STA_INFO_RX_BITRATE
] &&
1274 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1275 sinfo
[NL80211_STA_INFO_RX_BITRATE
], rate_policy
))
1277 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
1279 nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]) * 100;
1281 if (rinfo
[NL80211_RATE_INFO_MCS
])
1282 e
->rx_rate
.mcs
= nla_get_u8(rinfo
[NL80211_RATE_INFO_MCS
]);
1284 if (rinfo
[NL80211_RATE_INFO_40_MHZ_WIDTH
])
1285 e
->rx_rate
.is_40mhz
= 1;
1287 if (rinfo
[NL80211_RATE_INFO_SHORT_GI
])
1288 e
->rx_rate
.is_short_gi
= 1;
1291 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
] &&
1292 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1293 sinfo
[NL80211_STA_INFO_TX_BITRATE
], rate_policy
))
1295 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
1297 nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]) * 100;
1299 if (rinfo
[NL80211_RATE_INFO_MCS
])
1300 e
->tx_rate
.mcs
= nla_get_u8(rinfo
[NL80211_RATE_INFO_MCS
]);
1302 if (rinfo
[NL80211_RATE_INFO_40_MHZ_WIDTH
])
1303 e
->tx_rate
.is_40mhz
= 1;
1305 if (rinfo
[NL80211_RATE_INFO_SHORT_GI
])
1306 e
->tx_rate
.is_short_gi
= 1;
1310 e
->noise
= 0; /* filled in by caller */
1316 int nl80211_get_assoclist(const char *ifname
, char *buf
, int *len
)
1321 struct nl80211_msg_conveyor
*req
;
1322 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
1323 struct iwinfo_assoclist_entry
*e
;
1325 if ((d
= opendir("/sys/class/net")) != NULL
)
1327 while ((de
= readdir(d
)) != NULL
)
1329 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
1330 (!de
->d_name
[strlen(ifname
)] ||
1331 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
1333 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
1338 nl80211_send(req
, nl80211_get_assoclist_cb
, &arr
);
1346 if (!nl80211_get_noise(ifname
, &noise
))
1347 for (i
= 0, e
= arr
.buf
; i
< arr
.count
; i
++, e
++)
1350 *len
= (arr
.count
* sizeof(struct iwinfo_assoclist_entry
));
1357 static int nl80211_get_txpwrlist_cb(struct nl_msg
*msg
, void *arg
)
1360 int ch_cur
, ch_cmp
, bands_remain
, freqs_remain
;
1362 struct nlattr
**attr
= nl80211_parse(msg
);
1363 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1364 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1365 struct nlattr
*band
, *freq
;
1367 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
1368 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
1369 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
1370 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
1371 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
1372 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
1373 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
1376 ch_cur
= *dbm_max
; /* value int* is initialized with channel by caller */
1379 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1381 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1382 nla_len(band
), NULL
);
1384 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1386 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1387 nla_data(freq
), nla_len(freq
), freq_policy
);
1389 ch_cmp
= nl80211_freq2channel(nla_get_u32(
1390 freqs
[NL80211_FREQUENCY_ATTR_FREQ
]));
1392 if ((!ch_cur
|| (ch_cmp
== ch_cur
)) &&
1393 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
])
1395 *dbm_max
= (int)(0.01 * nla_get_u32(
1396 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
]));
1406 int nl80211_get_txpwrlist(const char *ifname
, char *buf
, int *len
)
1409 int dbm_max
= -1, dbm_cur
, dbm_cnt
;
1410 struct nl80211_msg_conveyor
*req
;
1411 struct iwinfo_txpwrlist_entry entry
;
1413 if (nl80211_get_channel(ifname
, &ch_cur
))
1416 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1419 /* initialize the value pointer with channel for callback */
1422 nl80211_send(req
, nl80211_get_txpwrlist_cb
, &dbm_max
);
1428 for (dbm_cur
= 0, dbm_cnt
= 0;
1430 dbm_cur
++, dbm_cnt
++)
1432 entry
.dbm
= dbm_cur
;
1433 entry
.mw
= iwinfo_dbm2mw(dbm_cur
);
1435 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1438 entry
.dbm
= dbm_max
;
1439 entry
.mw
= iwinfo_dbm2mw(dbm_max
);
1441 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1444 *len
= dbm_cnt
* sizeof(entry
);
1451 static void nl80211_get_scancrypto(const char *spec
,
1452 struct iwinfo_crypto_entry
*c
)
1454 if (strstr(spec
, "WPA") || strstr(spec
, "WEP"))
1458 if (strstr(spec
, "WPA2-") && strstr(spec
, "WPA-"))
1461 else if (strstr(spec
, "WPA2"))
1464 else if (strstr(spec
, "WPA"))
1467 else if (strstr(spec
, "WEP"))
1468 c
->auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
1471 if (strstr(spec
, "PSK"))
1472 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1474 if (strstr(spec
, "802.1X") || strstr(spec
, "EAP"))
1475 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1477 if (strstr(spec
, "WPA-NONE"))
1478 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1481 if (strstr(spec
, "TKIP"))
1482 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1484 if (strstr(spec
, "CCMP"))
1485 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1487 if (strstr(spec
, "WEP-40"))
1488 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1490 if (strstr(spec
, "WEP-104"))
1491 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1493 c
->group_ciphers
= c
->pair_ciphers
;
1502 struct nl80211_scanlist
{
1503 struct iwinfo_scanlist_entry
*e
;
1508 static void nl80211_get_scanlist_ie(struct nlattr
**bss
,
1509 struct iwinfo_scanlist_entry
*e
)
1511 int ielen
= nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1512 unsigned char *ie
= nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1513 static unsigned char ms_oui
[3] = { 0x00, 0x50, 0xf2 };
1515 while (ielen
>= 2 && ielen
>= ie
[1])
1520 memcpy(e
->ssid
, ie
+ 2, min(ie
[1], IWINFO_ESSID_MAX_SIZE
));
1524 iwinfo_parse_rsn(&e
->crypto
, ie
+ 2, ie
[1],
1525 IWINFO_CIPHER_CCMP
, IWINFO_KMGMT_8021x
);
1528 case 221: /* Vendor */
1529 if (ie
[1] >= 4 && !memcmp(ie
+ 2, ms_oui
, 3) && ie
[5] == 1)
1530 iwinfo_parse_rsn(&e
->crypto
, ie
+ 6, ie
[1] - 4,
1531 IWINFO_CIPHER_TKIP
, IWINFO_KMGMT_PSK
);
1540 static int nl80211_get_scanlist_cb(struct nl_msg
*msg
, void *arg
)
1545 struct nl80211_scanlist
*sl
= arg
;
1546 struct nlattr
**tb
= nl80211_parse(msg
);
1547 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
1549 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
1550 [NL80211_BSS_TSF
] = { .type
= NLA_U64
},
1551 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
1552 [NL80211_BSS_BSSID
] = { },
1553 [NL80211_BSS_BEACON_INTERVAL
] = { .type
= NLA_U16
},
1554 [NL80211_BSS_CAPABILITY
] = { .type
= NLA_U16
},
1555 [NL80211_BSS_INFORMATION_ELEMENTS
] = { },
1556 [NL80211_BSS_SIGNAL_MBM
] = { .type
= NLA_U32
},
1557 [NL80211_BSS_SIGNAL_UNSPEC
] = { .type
= NLA_U8
},
1558 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
1559 [NL80211_BSS_SEEN_MS_AGO
] = { .type
= NLA_U32
},
1560 [NL80211_BSS_BEACON_IES
] = { },
1563 if (!tb
[NL80211_ATTR_BSS
] ||
1564 nla_parse_nested(bss
, NL80211_BSS_MAX
, tb
[NL80211_ATTR_BSS
],
1566 !bss
[NL80211_BSS_BSSID
])
1571 if (bss
[NL80211_BSS_CAPABILITY
])
1572 caps
= nla_get_u16(bss
[NL80211_BSS_CAPABILITY
]);
1576 memset(sl
->e
, 0, sizeof(*sl
->e
));
1577 memcpy(sl
->e
->mac
, nla_data(bss
[NL80211_BSS_BSSID
]), 6);
1580 sl
->e
->mode
= IWINFO_OPMODE_ADHOC
;
1582 sl
->e
->mode
= IWINFO_OPMODE_MASTER
;
1585 sl
->e
->crypto
.enabled
= 1;
1587 if (bss
[NL80211_BSS_FREQUENCY
])
1588 sl
->e
->channel
= nl80211_freq2channel(nla_get_u32(
1589 bss
[NL80211_BSS_FREQUENCY
]));
1591 if (bss
[NL80211_BSS_INFORMATION_ELEMENTS
])
1592 nl80211_get_scanlist_ie(bss
, sl
->e
);
1594 if (bss
[NL80211_BSS_SIGNAL_MBM
])
1597 (uint8_t)((int32_t)nla_get_u32(bss
[NL80211_BSS_SIGNAL_MBM
]) / 100);
1599 rssi
= sl
->e
->signal
- 0x100;
1603 else if (rssi
> -40)
1606 sl
->e
->quality
= (rssi
+ 110);
1607 sl
->e
->quality_max
= 70;
1610 if (sl
->e
->crypto
.enabled
&& !sl
->e
->crypto
.wpa_version
)
1612 sl
->e
->crypto
.auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
1613 sl
->e
->crypto
.pair_ciphers
= IWINFO_CIPHER_WEP40
| IWINFO_CIPHER_WEP104
;
1622 static int nl80211_get_scanlist_nl(const char *ifname
, char *buf
, int *len
)
1624 struct nl80211_msg_conveyor
*req
;
1625 struct nl80211_scanlist sl
= { .e
= (struct iwinfo_scanlist_entry
*)buf
};
1627 req
= nl80211_msg(ifname
, NL80211_CMD_TRIGGER_SCAN
, 0);
1630 nl80211_send(req
, NULL
, NULL
);
1634 nl80211_wait("nl80211", "scan", NL80211_CMD_NEW_SCAN_RESULTS
);
1636 req
= nl80211_msg(ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
1639 nl80211_send(req
, nl80211_get_scanlist_cb
, &sl
);
1643 *len
= sl
.len
* sizeof(struct iwinfo_scanlist_entry
);
1644 return *len
? 0 : -1;
1647 int nl80211_get_scanlist(const char *ifname
, char *buf
, int *len
)
1649 int freq
, rssi
, qmax
, count
;
1651 char ssid
[128] = { 0 };
1652 char bssid
[18] = { 0 };
1653 char cipher
[256] = { 0 };
1655 /* Got a radioX pseudo interface, find some interface on it or create one */
1656 if (!strncmp(ifname
, "radio", 5))
1658 /* Reuse existing interface */
1659 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
1661 return nl80211_get_scanlist(res
, buf
, len
);
1664 /* Need to spawn a temporary iface for scanning */
1665 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
1667 count
= nl80211_get_scanlist(res
, buf
, len
);
1673 struct iwinfo_scanlist_entry
*e
= (struct iwinfo_scanlist_entry
*)buf
;
1675 /* WPA supplicant */
1676 if ((res
= nl80211_wpactl_info(ifname
, "SCAN", "CTRL-EVENT-SCAN-RESULTS")))
1678 if ((res
= nl80211_wpactl_info(ifname
, "SCAN_RESULTS", NULL
)))
1680 nl80211_get_quality_max(ifname
, &qmax
);
1682 /* skip header line */
1683 while (*res
++ != '\n');
1687 while (sscanf(res
, "%17s %d %d %255s%*[ \t]%127[^\n]\n",
1688 bssid
, &freq
, &rssi
, cipher
, ssid
) > 0)
1691 e
->mac
[0] = strtol(&bssid
[0], NULL
, 16);
1692 e
->mac
[1] = strtol(&bssid
[3], NULL
, 16);
1693 e
->mac
[2] = strtol(&bssid
[6], NULL
, 16);
1694 e
->mac
[3] = strtol(&bssid
[9], NULL
, 16);
1695 e
->mac
[4] = strtol(&bssid
[12], NULL
, 16);
1696 e
->mac
[5] = strtol(&bssid
[15], NULL
, 16);
1699 memcpy(e
->ssid
, ssid
, min(strlen(ssid
), sizeof(e
->ssid
) - 1));
1701 /* Mode (assume master) */
1702 e
->mode
= IWINFO_OPMODE_MASTER
;
1705 e
->channel
= nl80211_freq2channel(freq
);
1713 /* The cfg80211 wext compat layer assumes a signal range
1714 * of -110 dBm to -40 dBm, the quality value is derived
1715 * by adding 110 to the signal level */
1718 else if (rssi
> -40)
1721 e
->quality
= (rssi
+ 110);
1729 e
->quality_max
= qmax
;
1732 nl80211_get_scancrypto(cipher
, &e
->crypto
);
1734 /* advance to next line */
1735 while (*res
&& *res
++ != '\n');
1740 memset(ssid
, 0, sizeof(ssid
));
1741 memset(bssid
, 0, sizeof(bssid
));
1742 memset(cipher
, 0, sizeof(cipher
));
1745 *len
= count
* sizeof(struct iwinfo_scanlist_entry
);
1753 /* Got a temp interface, don't create yet another one */
1754 if (!strncmp(ifname
, "tmp.", 4))
1756 if (!iwinfo_ifup(ifname
))
1759 nl80211_get_scanlist_nl(ifname
, buf
, len
);
1760 iwinfo_ifdown(ifname
);
1764 /* Spawn a new scan interface */
1767 if (!(res
= nl80211_ifadd(ifname
)))
1770 if (!iwinfo_ifmac(res
))
1773 /* if we can take the new interface up, the driver supports an
1774 * additional interface and there's no need to tear down the ap */
1775 if (iwinfo_ifup(res
))
1777 nl80211_get_scanlist_nl(res
, buf
, len
);
1781 /* driver cannot create secondary interface, take down ap
1783 else if (iwinfo_ifdown(ifname
) && iwinfo_ifup(res
))
1785 nl80211_get_scanlist_nl(res
, buf
, len
);
1787 iwinfo_ifup(ifname
);
1788 nl80211_hostapd_hup(ifname
);
1800 static int nl80211_get_freqlist_cb(struct nl_msg
*msg
, void *arg
)
1802 int bands_remain
, freqs_remain
;
1804 struct nl80211_array_buf
*arr
= arg
;
1805 struct iwinfo_freqlist_entry
*e
= arr
->buf
;
1807 struct nlattr
**attr
= nl80211_parse(msg
);
1808 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1809 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1810 struct nlattr
*band
, *freq
;
1812 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
1813 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
1814 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
1815 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
1816 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
1817 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
1818 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
1821 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1823 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
1824 nla_data(band
), nla_len(band
), NULL
);
1826 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1828 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1829 nla_data(freq
), nla_len(freq
), NULL
);
1831 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
] ||
1832 freqs
[NL80211_FREQUENCY_ATTR_DISABLED
])
1835 e
->mhz
= nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]);
1836 e
->channel
= nl80211_freq2channel(e
->mhz
);
1839 freqs
[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] ||
1840 freqs
[NL80211_FREQUENCY_ATTR_NO_IBSS
] ||
1841 freqs
[NL80211_FREQUENCY_ATTR_RADAR
]
1852 int nl80211_get_freqlist(const char *ifname
, char *buf
, int *len
)
1854 struct nl80211_msg_conveyor
*req
;
1855 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
1857 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1860 nl80211_send(req
, nl80211_get_freqlist_cb
, &arr
);
1866 *len
= arr
.count
* sizeof(struct iwinfo_freqlist_entry
);
1873 static int nl80211_get_country_cb(struct nl_msg
*msg
, void *arg
)
1876 struct nlattr
**attr
= nl80211_parse(msg
);
1878 if (attr
[NL80211_ATTR_REG_ALPHA2
])
1879 memcpy(buf
, nla_data(attr
[NL80211_ATTR_REG_ALPHA2
]), 2);
1886 int nl80211_get_country(const char *ifname
, char *buf
)
1889 struct nl80211_msg_conveyor
*req
;
1891 req
= nl80211_msg(ifname
, NL80211_CMD_GET_REG
, 0);
1894 nl80211_send(req
, nl80211_get_country_cb
, buf
);
1904 int nl80211_get_countrylist(const char *ifname
, char *buf
, int *len
)
1907 struct iwinfo_country_entry
*e
= (struct iwinfo_country_entry
*)buf
;
1908 const struct iwinfo_iso3166_label
*l
;
1910 for (l
= IWINFO_ISO3166_NAMES
, count
= 0; l
->iso3166
; l
++, e
++, count
++)
1912 e
->iso3166
= l
->iso3166
;
1913 e
->ccode
[0] = (l
->iso3166
/ 256);
1914 e
->ccode
[1] = (l
->iso3166
% 256);
1917 *len
= (count
* sizeof(struct iwinfo_country_entry
));
1921 static int nl80211_get_hwmodelist_cb(struct nl_msg
*msg
, void *arg
)
1924 int bands_remain
, freqs_remain
;
1926 struct nlattr
**attr
= nl80211_parse(msg
);
1927 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1928 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1929 struct nlattr
*band
, *freq
;
1933 if (attr
[NL80211_ATTR_WIPHY_BANDS
])
1935 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1937 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
1938 nla_data(band
), nla_len(band
), NULL
);
1940 if (bands
[NL80211_BAND_ATTR_HT_CAPA
])
1941 caps
= nla_get_u16(bands
[NL80211_BAND_ATTR_HT_CAPA
]);
1943 /* Treat any nonzero capability as 11n */
1945 *modes
|= IWINFO_80211_N
;
1947 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
],
1950 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1951 nla_data(freq
), nla_len(freq
), NULL
);
1953 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
])
1956 if (nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]) < 2485)
1958 *modes
|= IWINFO_80211_B
;
1959 *modes
|= IWINFO_80211_G
;
1963 *modes
|= IWINFO_80211_A
;
1972 int nl80211_get_hwmodelist(const char *ifname
, int *buf
)
1974 struct nl80211_msg_conveyor
*req
;
1976 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1979 nl80211_send(req
, nl80211_get_hwmodelist_cb
, buf
);
1983 return *buf
? 0 : -1;
1986 int nl80211_get_mbssid_support(const char *ifname
, int *buf
)
1988 /* Test whether we can create another interface */
1989 char *nif
= nl80211_ifadd(ifname
);
1993 *buf
= (iwinfo_ifmac(nif
) && iwinfo_ifup(nif
));
2004 int nl80211_get_hardware_id(const char *ifname
, char *buf
)
2009 /* Got a radioX pseudo interface, find some interface on it or create one */
2010 if (!strncmp(ifname
, "radio", 5))
2012 /* Reuse existing interface */
2013 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
2015 rv
= wext_get_hardware_id(res
, buf
);
2018 /* Need to spawn a temporary iface for finding IDs */
2019 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
2021 rv
= wext_get_hardware_id(res
, buf
);
2027 rv
= wext_get_hardware_id(ifname
, buf
);
2030 /* Failed to obtain hardware IDs, search board config */
2033 rv
= iwinfo_hardware_id_from_mtd((struct iwinfo_hardware_id
*)buf
);
2039 static const struct iwinfo_hardware_entry
*
2040 nl80211_get_hardware_entry(const char *ifname
)
2042 struct iwinfo_hardware_id id
;
2044 if (nl80211_get_hardware_id(ifname
, (char *)&id
))
2047 return iwinfo_hardware(&id
);
2050 int nl80211_get_hardware_name(const char *ifname
, char *buf
)
2052 const struct iwinfo_hardware_entry
*hw
;
2054 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2055 sprintf(buf
, "Generic MAC80211");
2057 sprintf(buf
, "%s %s", hw
->vendor_name
, hw
->device_name
);
2062 int nl80211_get_txpower_offset(const char *ifname
, int *buf
)
2064 const struct iwinfo_hardware_entry
*hw
;
2066 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2069 *buf
= hw
->txpower_offset
;
2073 int nl80211_get_frequency_offset(const char *ifname
, int *buf
)
2075 const struct iwinfo_hardware_entry
*hw
;
2077 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2080 *buf
= hw
->frequency_offset
;