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authorJames Ketrenos <jketreno@linux.intel.com>2005-09-13 17:27:19 -0500
committerJeff Garzik <jgarzik@pobox.com>2005-09-16 03:06:32 -0400
commitb1b508e1b13529b3cc5b59c352f49b9b58a302b6 (patch)
tree6321572a9bca16928b57e936376af616a1868dc0 /net/ieee80211
parentfd27817ce941c7134adefd2852f8a5f274315ff4 (diff)
[PATCH] ieee80211 quality scaling algorithm extension handler
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>
Diffstat (limited to 'net/ieee80211')
-rw-r--r--net/ieee80211/ieee80211_wx.c40
1 files changed, 30 insertions, 10 deletions
diff --git a/net/ieee80211/ieee80211_wx.c b/net/ieee80211/ieee80211_wx.c
index 94882f39b072..04f0897b0653 100644
--- a/net/ieee80211/ieee80211_wx.c
+++ b/net/ieee80211/ieee80211_wx.c
@@ -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);