diff options
Diffstat (limited to 'libs/iwinfo/src/iwinfo_wext.c')
| -rw-r--r-- | libs/iwinfo/src/iwinfo_wext.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/libs/iwinfo/src/iwinfo_wext.c b/libs/iwinfo/src/iwinfo_wext.c index 7f44fd0d23..76062ba0a4 100644 --- a/libs/iwinfo/src/iwinfo_wext.c +++ b/libs/iwinfo/src/iwinfo_wext.c @@ -32,6 +32,24 @@ static double wext_freq2float(const struct iw_freq *in) return res; } +static int wext_freq2mhz(const struct iw_freq *in) +{ + int i, mhz; + + if( in->e == 6 ) + { + return in->m; + } + else + { + mhz = in->m; + for(i = 0; i < in->e; i++) + mhz *= 10; + + return (int)(mhz / 100000); + } +} + static int wext_ioctl(const char *ifname, int cmd, struct iwreq *wrq) { /* prepare socket */ @@ -157,6 +175,44 @@ int wext_get_channel(const char *ifname, int *buf) return -1; } +int wext_get_frequency(const char *ifname, int *buf) +{ + struct iwreq wrq; + struct iw_range range; + int i, channel; + + if(wext_ioctl(ifname, SIOCGIWFREQ, &wrq) >= 0) + { + /* We got a channel number instead ... */ + if( wrq.u.freq.m < 1000 ) + { + channel = wrq.u.freq.m; + wrq.u.data.pointer = (caddr_t) ⦥ + wrq.u.data.length = sizeof(struct iw_range); + wrq.u.data.flags = 0; + + if(wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0) + { + for(i = 0; i < range.num_frequency; i++) + { + if( range.freq[i].i == channel ) + { + *buf = wext_freq2mhz(&range.freq[i]); + return 0; + } + } + } + } + else + { + *buf = wext_freq2mhz(&wrq.u.freq); + return 0; + } + } + + return -1; +} + int wext_get_signal(const char *ifname, int *buf) { struct iwreq wrq; |