mac80211/minstrel_ht: avoid useless sampling of high-probability slower rates
authorFelix Fietkau <nbd@openwrt.org>
Sat, 16 Mar 2013 16:00:26 +0000 (17:00 +0100)
committerJohannes Berg <johannes.berg@intel.com>
Mon, 18 Mar 2013 19:11:58 +0000 (20:11 +0100)
commitbc96f24266291c1b967cfa868904731b1bb9a08c
tree034c3f5bc01f399ceae3d8e6d01c5f6c53189d4a
parent3e8b1eb21c8b9806928000bf733e5762a64a7f72
mac80211/minstrel_ht: avoid useless sampling of high-probability slower rates

Slow rates that have >95% success probability do not need to be
monitored continuously. When the channel conditions change rapidly, the
slow sampling results are useless anyway. When conditions change slowly,
they will be monitored by gradual downgrading of the actively used
rates. This patch slightly improves throughput under good conditions.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
net/mac80211/rc80211_minstrel_ht.c