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authorIvo van Doorn <ivdoorn@gmail.com>2008-07-19 16:16:12 +0200
committerJohn W. Linville <linville@tuxdriver.com>2008-07-29 16:55:04 -0400
commitf2fdbc4847e0d3991474949f21aa439c361391db (patch)
treea54d17aeba6d1bc73c943bddfbcdde85c4cb1787 /drivers
parented06387b44f0501f7298b559dc8ddfcd410c8fa0 (diff)
downloadop-kernel-dev-f2fdbc4847e0d3991474949f21aa439c361391db.zip
op-kernel-dev-f2fdbc4847e0d3991474949f21aa439c361391db.tar.gz
rt2x00: Fix EIFS timing value
Olivier reported a difference between the EIFS values used in the legacy driver and the one in the rt2x00 drivers. In rt2x00 the value was ( SIFS + (8 * (IEEE80211_HEADER + ACK_SIZE)) ) which comes down to 314us while the legacy driver uses the value 364us This was caused because EIFS is: SIFS + DIFS + AckTime This patch will fix this by adding the DIFS by the above value, and creating a SHORT_EIFS define which uses the SHORT_DIFS. Reported-by: Olivier Cornu <o.cornu@gmail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00.h5
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00config.c2
2 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 07b03b3..73495f0 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -108,7 +108,10 @@
#define SHORT_PIFS ( SIFS + SHORT_SLOT_TIME )
#define DIFS ( PIFS + SLOT_TIME )
#define SHORT_DIFS ( SHORT_PIFS + SHORT_SLOT_TIME )
-#define EIFS ( SIFS + (8 * (IEEE80211_HEADER + ACK_SIZE)) )
+#define EIFS ( SIFS + DIFS + \
+ (8 * (IEEE80211_HEADER + ACK_SIZE)) )
+#define SHORT_EIFS ( SIFS + SHORT_DIFS + \
+ (8 * (IEEE80211_HEADER + ACK_SIZE)) )
/*
* Chipset identification
diff --git a/drivers/net/wireless/rt2x00/rt2x00config.c b/drivers/net/wireless/rt2x00/rt2x00config.c
index f20ca71..3f89516 100644
--- a/drivers/net/wireless/rt2x00/rt2x00config.c
+++ b/drivers/net/wireless/rt2x00/rt2x00config.c
@@ -271,7 +271,7 @@ config:
libconf.sifs = SIFS;
libconf.pifs = short_slot_time ? SHORT_PIFS : PIFS;
libconf.difs = short_slot_time ? SHORT_DIFS : DIFS;
- libconf.eifs = EIFS;
+ libconf.eifs = short_slot_time ? SHORT_EIFS : EIFS;
}
libconf.conf = conf;
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