2 * iwinfo - Wireless Information Library - Linux Wireless Extension Backend
4 * Copyright (C) 2009 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 * Parts of this code are derived from the Linux wireless tools, iwlib.c,
19 * iwlist.c and iwconfig.c in particular.
23 #include "iwinfo_wext.h"
25 static double wext_freq2float(const struct iw_freq *in)
28 double res = (double) in->m;
29 for(i = 0; i < in->e; i++) res *= 10;
33 static inline int wext_freq2mhz(const struct iw_freq *in)
43 return (int)(wext_freq2float(in) / 1000000);
47 static inline int wext_ioctl(const char *ifname, int cmd, struct iwreq *wrq)
49 if( !strncmp(ifname, "mon.", 4) )
50 strncpy(wrq->ifr_name, &ifname[4], IFNAMSIZ);
52 strncpy(wrq->ifr_name, ifname, IFNAMSIZ);
54 return iwinfo_ioctl(cmd, wrq);
58 int wext_probe(const char *ifname)
62 if(wext_ioctl(ifname, SIOCGIWNAME, &wrq) >= 0)
73 int wext_get_mode(const char *ifname, char *buf)
77 if(wext_ioctl(ifname, SIOCGIWMODE, &wrq) >= 0)
86 sprintf(buf, "Ad-Hoc");
90 sprintf(buf, "Client");
94 sprintf(buf, "Master");
98 sprintf(buf, "Repeater");
102 sprintf(buf, "Secondary");
106 sprintf(buf, "Monitor");
110 sprintf(buf, "Unknown");
119 int wext_get_ssid(const char *ifname, char *buf)
123 wrq.u.essid.pointer = (caddr_t) buf;
124 wrq.u.essid.length = IW_ESSID_MAX_SIZE + 1;
125 wrq.u.essid.flags = 0;
127 if(wext_ioctl(ifname, SIOCGIWESSID, &wrq) >= 0)
133 int wext_get_bssid(const char *ifname, char *buf)
137 if(wext_ioctl(ifname, SIOCGIWAP, &wrq) >= 0)
139 sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
140 (uint8_t)wrq.u.ap_addr.sa_data[0], (uint8_t)wrq.u.ap_addr.sa_data[1],
141 (uint8_t)wrq.u.ap_addr.sa_data[2], (uint8_t)wrq.u.ap_addr.sa_data[3],
142 (uint8_t)wrq.u.ap_addr.sa_data[4], (uint8_t)wrq.u.ap_addr.sa_data[5]);
150 int wext_get_bitrate(const char *ifname, int *buf)
154 if(wext_ioctl(ifname, SIOCGIWRATE, &wrq) >= 0)
156 *buf = (wrq.u.bitrate.value / 1000);
163 int wext_get_channel(const char *ifname, int *buf)
166 struct iw_range range;
170 if(wext_ioctl(ifname, SIOCGIWFREQ, &wrq) >= 0)
172 if( wrq.u.freq.m >= 1000 )
174 freq = wext_freq2float(&wrq.u.freq);
175 wrq.u.data.pointer = (caddr_t) ⦥
176 wrq.u.data.length = sizeof(struct iw_range);
177 wrq.u.data.flags = 0;
179 if(wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0)
181 for(i = 0; i < range.num_frequency; i++)
183 if( wext_freq2float(&range.freq[i]) == freq )
185 *buf = range.freq[i].i;
201 int wext_get_frequency(const char *ifname, int *buf)
204 struct iw_range range;
207 if(wext_ioctl(ifname, SIOCGIWFREQ, &wrq) >= 0)
209 /* We got a channel number instead ... */
210 if( wrq.u.freq.m < 1000 )
212 channel = wrq.u.freq.m;
213 wrq.u.data.pointer = (caddr_t) ⦥
214 wrq.u.data.length = sizeof(struct iw_range);
215 wrq.u.data.flags = 0;
217 if(wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0)
219 for(i = 0; i < range.num_frequency; i++)
221 if( range.freq[i].i == channel )
223 *buf = wext_freq2mhz(&range.freq[i]);
231 *buf = wext_freq2mhz(&wrq.u.freq);
239 int wext_get_txpower(const char *ifname, int *buf)
243 wrq.u.txpower.flags = 0;
245 if(wext_ioctl(ifname, SIOCGIWTXPOW, &wrq) >= 0)
247 if(wrq.u.txpower.flags & IW_TXPOW_MWATT)
248 *buf = iwinfo_mw2dbm(wrq.u.txpower.value);
250 *buf = wrq.u.txpower.value;
258 int wext_get_signal(const char *ifname, int *buf)
261 struct iw_statistics stats;
263 wrq.u.data.pointer = (caddr_t) &stats;
264 wrq.u.data.length = sizeof(struct iw_statistics);
265 wrq.u.data.flags = 1;
267 if(wext_ioctl(ifname, SIOCGIWSTATS, &wrq) >= 0)
269 *buf = (stats.qual.updated & IW_QUAL_DBM)
270 ? (stats.qual.level - 0x100) : stats.qual.level;
278 int wext_get_noise(const char *ifname, int *buf)
281 struct iw_statistics stats;
283 wrq.u.data.pointer = (caddr_t) &stats;
284 wrq.u.data.length = sizeof(struct iw_statistics);
285 wrq.u.data.flags = 1;
287 if(wext_ioctl(ifname, SIOCGIWSTATS, &wrq) >= 0)
289 *buf = (stats.qual.updated & IW_QUAL_DBM)
290 ? (stats.qual.noise - 0x100) : stats.qual.noise;
298 int wext_get_quality(const char *ifname, int *buf)
301 struct iw_statistics stats;
303 wrq.u.data.pointer = (caddr_t) &stats;
304 wrq.u.data.length = sizeof(struct iw_statistics);
305 wrq.u.data.flags = 1;
307 if(wext_ioctl(ifname, SIOCGIWSTATS, &wrq) >= 0)
309 *buf = stats.qual.qual;
316 int wext_get_quality_max(const char *ifname, int *buf)
319 struct iw_range range;
321 wrq.u.data.pointer = (caddr_t) ⦥
322 wrq.u.data.length = sizeof(struct iw_range);
323 wrq.u.data.flags = 0;
325 if(wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0)
327 *buf = range.max_qual.qual;
334 int wext_get_assoclist(const char *ifname, char *buf, int *len)
340 int wext_get_txpwrlist(const char *ifname, char *buf, int *len)
343 struct iw_range range;
344 struct iwinfo_txpwrlist_entry entry;
347 wrq.u.data.pointer = (caddr_t) ⦥
348 wrq.u.data.length = sizeof(struct iw_range);
349 wrq.u.data.flags = 0;
351 if( (wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0) &&
352 (range.num_txpower > 0) && (range.num_txpower <= IW_MAX_TXPOWER) &&
353 !(range.txpower_capa & IW_TXPOW_RELATIVE)
355 for( i = 0; i < range.num_txpower; i++ )
357 if( range.txpower_capa & IW_TXPOW_MWATT )
359 entry.dbm = iwinfo_mw2dbm(range.txpower[i]);
360 entry.mw = range.txpower[i];
363 /* Madwifi does neither set mW not dBm caps, also iwlist assumes
364 * dBm if mW is not set, so don't check here... */
365 else /* if( range.txpower_capa & IW_TXPOW_DBM ) */
367 entry.dbm = range.txpower[i];
368 entry.mw = iwinfo_dbm2mw(range.txpower[i]);
371 memcpy(&buf[i*sizeof(entry)], &entry, sizeof(entry));
374 *len = i * sizeof(entry);
381 int wext_get_freqlist(const char *ifname, char *buf, int *len)
384 struct iw_range range;
385 struct iwinfo_freqlist_entry entry;
388 wrq.u.data.pointer = (caddr_t) ⦥
389 wrq.u.data.length = sizeof(struct iw_range);
390 wrq.u.data.flags = 0;
392 if(wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0)
396 for(i = 0; i < range.num_frequency; i++)
398 entry.mhz = wext_freq2mhz(&range.freq[i]);
399 entry.channel = range.freq[i].i;
400 entry.restricted = 0;
402 memcpy(&buf[bl], &entry, sizeof(struct iwinfo_freqlist_entry));
403 bl += sizeof(struct iwinfo_freqlist_entry);
413 int wext_get_country(const char *ifname, char *buf)
419 int wext_get_countrylist(const char *ifname, char *buf, int *len)
425 int wext_get_hwmodelist(const char *ifname, int *buf)
427 char chans[IWINFO_BUFSIZE] = { 0 };
428 struct iwinfo_freqlist_entry *e = NULL;
431 if( !wext_get_freqlist(ifname, chans, &len) )
433 for( e = (struct iwinfo_freqlist_entry *)chans; e->channel; e++ )
435 if( e->channel <= 14 )
437 *buf |= IWINFO_80211_B;
438 *buf |= IWINFO_80211_G;
442 *buf |= IWINFO_80211_A;
452 int wext_get_encryption(const char *ifname, char *buf)
454 /* No reliable crypto info in wext */
458 int wext_get_mbssid_support(const char *ifname, int *buf)
460 /* No multi bssid support atm */