From f0e79d4172c0bedda3db145812c269856321bfd0 Mon Sep 17 00:00:00 2001 From: nbd Date: Fri, 15 Jan 2010 23:12:21 +0000 Subject: ath9k: add a workaround for the tx ack time issue triggered by the timing handling cleanups in 2.4 ghz, calculating the ack timeout the way it is described in 802.11-2007 currently leads to tx timeouts set it to a minimum of what the initvals set (64 usec) until we know what is causing this git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19156 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../patches/580-ath9k_ack_timeout_workaround.patch | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 package/mac80211/patches/580-ath9k_ack_timeout_workaround.patch (limited to 'package') diff --git a/package/mac80211/patches/580-ath9k_ack_timeout_workaround.patch b/package/mac80211/patches/580-ath9k_ack_timeout_workaround.patch new file mode 100644 index 0000000000..953c07af6f --- /dev/null +++ b/package/mac80211/patches/580-ath9k_ack_timeout_workaround.patch @@ -0,0 +1,14 @@ +--- a/drivers/net/wireless/ath/ath9k/hw.c ++++ b/drivers/net/wireless/ath/ath9k/hw.c +@@ -1229,6 +1229,11 @@ void ath9k_hw_init_global_settings(struc + /* As defined by IEEE 802.11-2007 17.3.8.6 */ + slottime = ah->slottime + 3 * ah->coverage_class; + acktimeout = slottime + sifstime; ++ ++ /* Workaround for a hw issue */ ++ if (conf->channel && conf->channel->band == IEEE80211_BAND_2GHZ) ++ acktimeout = max(64, acktimeout); ++ + ath9k_hw_setslottime(ah, slottime); + ath9k_hw_set_ack_timeout(ah, acktimeout); + ath9k_hw_set_cts_timeout(ah, acktimeout); -- cgit v1.2.3