diff options
Diffstat (limited to 'libs/iwinfo/src/iwinfo_wext.c')
| -rw-r--r-- | libs/iwinfo/src/iwinfo_wext.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/libs/iwinfo/src/iwinfo_wext.c b/libs/iwinfo/src/iwinfo_wext.c index 859bb1f1d..24be10fa9 100644 --- a/libs/iwinfo/src/iwinfo_wext.c +++ b/libs/iwinfo/src/iwinfo_wext.c @@ -22,6 +22,8 @@ #include "iwinfo.h" #include "iwinfo_wext.h" +#define LOG10_MAGIC 1.25892541179 + static int ioctl_socket = -1; static double wext_freq2float(const struct iw_freq *in) @@ -50,6 +52,39 @@ static int wext_freq2mhz(const struct iw_freq *in) } } +static int wext_dbm2mw(int in) +{ + double res = 1.0; + int ip = in / 10; + int fp = in % 10; + int k; + + for(k = 0; k < ip; k++) res *= 10; + for(k = 0; k < fp; k++) res *= LOG10_MAGIC; + + return (int)res; +} + +static int wext_mw2dbm(int in) +{ + double fin = (double) in; + int res = 0; + + while(fin > 10.0) + { + res += 10; + fin /= 10.0; + } + + while(fin > 1.000001) + { + res += 1; + fin /= LOG10_MAGIC; + } + + return res; +} + static int wext_ioctl(const char *ifname, int cmd, struct iwreq *wrq) { /* prepare socket */ @@ -297,6 +332,44 @@ int wext_get_assoclist(const char *ifname, char *buf, int *len) return -1; } +int wext_get_txpwrlist(const char *ifname, char *buf, int *len) +{ + struct iwreq wrq; + struct iw_range range; + struct iwinfo_txpwrlist_entry entry; + int i; + + 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) && + (range.num_txpower > 0) && (range.num_txpower <= IW_MAX_TXPOWER) && + !(range.txpower_capa & IW_TXPOW_RELATIVE) + ) { + for( i = 0; i < range.num_txpower; i++ ) + { + if( range.txpower_capa & IW_TXPOW_MWATT ) + { + entry.dbm = wext_mw2dbm(range.txpower[i]); + entry.mw = range.txpower[i]; + } + else + { + entry.dbm = range.txpower[i]; + entry.mw = wext_dbm2mw(range.txpower[i]); + } + + memcpy(&buf[i*sizeof(entry)], &entry, sizeof(entry)); + } + + *len = i * sizeof(entry); + return 0; + } + + return -1; +} + int wext_get_mbssid_support(const char *ifname, int *buf) { /* No multi bssid support atm */ |