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authorDaniel Halperin <dhalperi@cs.washington.edu>2010-01-22 14:22:58 -0800
committerJohn W. Linville <linville@tuxdriver.com>2010-01-25 16:36:27 -0500
commitff27fabe62d288038b36f41ac6a2190ed7d15993 (patch)
tree083eaf304695dd346b2e0c6a50d2ed9d2b0b91f3 /drivers/hid/hid-cypress.c
parent81963d68575d497d626ce13e42c84518a931cc12 (diff)
iwlwifi: fix throughput degradation in aggregation mode
The following commit commit e4da8c37af626001ff704fb29ea14eb58f5f7208 Author: Johannes Berg <johannes@sipsolutions.net> Date: Wed Dec 23 13:15:43 2009 +0100 mac80211: make off-channel work generic triggered a bug in iwlwifi where HT parameters would not be correctly set in some mac80211 pathways. The aggregation (and possibly other) station flags were not being set, which limited the size of aggregation blocks and reduced throughput at high rates. >From Johannes: """ Due to Wey-Yi's patch to use the set-channel command when the channel changes while associated, we don't get a full new RXON. Therefore, we don't re-set the rxon-station either. However, under some circumstances that apparently have gotten more likely mac80211 will first set up the BSS info, then add the station and then switch to an HT channel type. Therefore, the check for "priv->current_ht_config.is_ht" in iwl_rxon_add_station() will hit false and not fill in the HT information. However, that check can just be removed, which is the easiest fix for all this, because the HT capa struct is always there, just could possibly have the ht_supported member set to false. """ A sample good link in my 3x3 network improves by approximately 25% TCP throughput. This fixes Bug 2144 (http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2144). Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/hid/hid-cypress.c')
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