mac80211's software scan implementation uses a passive dwell time of (HZ / 5) which means we stay 200ms on each passive channel. Compared to iwlwifi's hw scan and the old ipw* drivers which use values around 120ms this is quite long. Reducing the passive dwell time from 200ms to 125ms should save us something around a second on cards capable of 11a and we should still be able to catch beacons from most access points (assuming a ~100ms beacon interval). Signed-off-by: Helmut Schaa <helmut.schaa@xxxxxxxxxxxxxx> --- diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index df24f8e..c075d34 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -26,7 +28,7 @@ #define IEEE80211_PROBE_DELAY (HZ / 33) #define IEEE80211_CHANNEL_TIME (HZ / 33) -#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5) +#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 8) struct ieee80211_bss * ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
