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| author | Vasanthakumar Thiagarajan <vasanth@atheros.com> | 2010-11-10 05:03:15 -0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-11-16 16:37:07 -0500 |
| commit | 39ec2997c374b528cdbf65099b6d6b8593a67f7f (patch) | |
| tree | cebd390623b948a176021d70cb1f34305cb1f87f /drivers/net/wireless/ath/ath9k | |
| parent | bc2068020bfa976efd425f3be590f58a012fd747 (diff) | |
| download | op-kernel-dev-39ec2997c374b528cdbf65099b6d6b8593a67f7f.zip op-kernel-dev-39ec2997c374b528cdbf65099b6d6b8593a67f7f.tar.gz | |
ath9k: Fix bug in delimiter padding computation
There is a roundng error in delimiter padding computation
which causes severe throughput drop with some of AR9003.
signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Cc:stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ath9k.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index 2143346..92670ce 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -177,8 +177,8 @@ void ath_descdma_cleanup(struct ath_softc *sc, struct ath_descdma *dd, /* returns delimiter padding required given the packet length */ #define ATH_AGGR_GET_NDELIM(_len) \ - (((((_len) + ATH_AGGR_DELIM_SZ) < ATH_AGGR_MINPLEN) ? \ - (ATH_AGGR_MINPLEN - (_len) - ATH_AGGR_DELIM_SZ) : 0) >> 2) + (((_len) >= ATH_AGGR_MINPLEN) ? 0 : \ + DIV_ROUND_UP(ATH_AGGR_MINPLEN - (_len), ATH_AGGR_DELIM_SZ)) #define BAW_WITHIN(_start, _bawsz, _seqno) \ ((((_seqno) - (_start)) & 4095) < (_bawsz)) |
