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[PATCH] ieee80211 quality scaling algorithm extension handler

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Incorporated Bill Moss' quality scaling algorithm into default wireless
extension handler.

Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
James Ketrenos 2005-09-13 17:27:19 -05:00 committed by Jeff Garzik
parent fd27817ce9
commit b1b508e1b1
2 changed files with 33 additions and 10 deletions
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3
include/net/ieee80211.h
View file

@ -719,6 +719,9 @@ struct ieee80211_device {
int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
int abg_ture; /* ABG flag */
int perfect_rssi;
int worst_rssi;
/* Callback functions */
void (*set_security)(struct net_device *dev,
struct ieee80211_security *sec);

40
net/ieee80211/ieee80211_wx.c
View file

@ -140,18 +140,38 @@ static inline char *ipw2100_translate_scan(struct ieee80211_device *ieee,
start = iwe_stream_add_point(start, stop, &iwe, custom);
/* Add quality statistics */
/* TODO: Fix these values... */
iwe.cmd = IWEVQUAL;
iwe.u.qual.qual = network->stats.signal;
iwe.u.qual.level = network->stats.rssi;
iwe.u.qual.noise = network->stats.noise;
iwe.u.qual.updated = network->stats.mask & IEEE80211_STATMASK_WEMASK;
if (!(network->stats.mask & IEEE80211_STATMASK_RSSI))
iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
if (!(network->stats.mask & IEEE80211_STATMASK_NOISE))
iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED |
IW_QUAL_NOISE_UPDATED;
if (!(network->stats.mask & IEEE80211_STATMASK_RSSI)) {
iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID |
IW_QUAL_LEVEL_INVALID;
iwe.u.qual.qual = 0;
iwe.u.qual.level = 0;
} else {
iwe.u.qual.level = network->stats.rssi;
iwe.u.qual.qual =
(100 *
(ieee->perfect_rssi - ieee->worst_rssi) *
(ieee->perfect_rssi - ieee->worst_rssi) -
(ieee->perfect_rssi - network->stats.rssi) *
(15 * (ieee->perfect_rssi - ieee->worst_rssi) +
62 * (ieee->perfect_rssi - network->stats.rssi))) /
((ieee->perfect_rssi - ieee->worst_rssi) *
(ieee->perfect_rssi - ieee->worst_rssi));
if (iwe.u.qual.qual > 100)
iwe.u.qual.qual = 100;
else if (iwe.u.qual.qual < 1)
iwe.u.qual.qual = 0;
}
if (!(network->stats.mask & IEEE80211_STATMASK_NOISE)) {
iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
if (!(network->stats.mask & IEEE80211_STATMASK_SIGNAL))
iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID;
iwe.u.qual.noise = 0;
} else {
iwe.u.qual.noise = network->stats.noise;
}
start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN);