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add wl0_txpwr setting to wificonf

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@2528 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2005-11-19 00:36:16 +00:00
parent 9fabfa3c8f
commit ae0b813b36
1 changed files with 64 additions and 0 deletions
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64
openwrt/package/wificonf/wificonf.c
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@ -112,6 +112,64 @@ static int nvram_disabled(char *name)
}
/* Quarter dBm units to mW
* Table starts at QDBM_OFFSET, so the first entry is mW for qdBm=153
* Table is offset so the last entry is largest mW value that fits in
* a uint16.
*/
#define QDBM_OFFSET 153
#define QDBM_TABLE_LEN 40
/* Smallest mW value that will round up to the first table entry, QDBM_OFFSET.
* Value is ( mW(QDBM_OFFSET - 1) + mW(QDBM_OFFSET) ) / 2
*/
#define QDBM_TABLE_LOW_BOUND 6493
/* Largest mW value that will round down to the last table entry,
* QDBM_OFFSET + QDBM_TABLE_LEN-1.
* Value is ( mW(QDBM_OFFSET + QDBM_TABLE_LEN - 1) + mW(QDBM_OFFSET + QDBM_TABLE_LEN) ) / 2.
*/
#define QDBM_TABLE_HIGH_BOUND 64938
static const uint16 nqdBm_to_mW_map[QDBM_TABLE_LEN] = {
/* qdBm: +0 +1 +2 +3 +4 +5 +6 +7 */
/* 153: */ 6683, 7079, 7499, 7943, 8414, 8913, 9441, 10000,
/* 161: */ 10593, 11220, 11885, 12589, 13335, 14125, 14962, 15849,
/* 169: */ 16788, 17783, 18836, 19953, 21135, 22387, 23714, 25119,
/* 177: */ 26607, 28184, 29854, 31623, 33497, 35481, 37584, 39811,
/* 185: */ 42170, 44668, 47315, 50119, 53088, 56234, 59566, 63096
};
unsigned char mw_to_qdbm(uint16 mw)
{
char qdbm;
int offset;
uint mw_uint = mw;
uint boundary;
/* handle boundary case */
if (mw_uint <= 1)
return 0;
offset = QDBM_OFFSET;
/* move mw into the range of the table */
while (mw_uint < QDBM_TABLE_LOW_BOUND) {
mw_uint *= 10;
offset -= 40;
}
for (qdbm = 0; qdbm < QDBM_TABLE_LEN-1; qdbm++) {
boundary = nqdBm_to_mW_map[qdbm] + (nqdBm_to_mW_map[qdbm+1] - nqdBm_to_mW_map[qdbm])/2;
if (mw_uint < boundary) break;
}
qdbm += (unsigned char)offset;
return(qdbm);
}
static int bcom_ioctl(int skfd, char *ifname, int cmd, void *buf, int len)
{
struct ifreq ifr;
@ -523,6 +581,12 @@ static void setup_bcom_common(int skfd, char *ifname)
buf[3] = 0;
bcom_ioctl(skfd, ifname, WLC_SET_COUNTRY, buf, 4);
if (v = nvram_get(wl_var("txpwr"))) {
val = atoi(v);
val = mw_to_qdbm(val);
bcom_set_int(skfd, ifname, "qtxpower", val);
}
/* Set other options */
val = nvram_enabled(wl_var("lazywds"));
bcom_ioctl(skfd, ifname, WLC_SET_LAZYWDS, &val, sizeof(val));