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ath9k: fix processing of TX PS null data frames

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When mac80211 was telling us to go into Powersave we listened
and immediately turned RX off. This meant hardware would not
see the ACKs from the AP we're associated with and hardware
we'd end up retransmiting the null data frame in a loop
helplessly.

Fix this by keeping track of the transmitted nullfunc frames
and only when we are sure the AP has sent back an ACK do we
go ahead and shut RX off.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: Vivek Natarajan <Vivek.Natarajan@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luis R. Rodriguez
2009-11-24 02:53:25 -05:00
committed by John W. Linville
parent 6b65b6ad01
commit e7824a5066
7 changed files with 69 additions and 5 deletions
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drivers/net/wireless/ath/ath9k/common.h
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@@ -78,6 +78,7 @@ struct ath_buf {
dma_addr_t bf_daddr; /* physical addr of desc */
dma_addr_t bf_buf_addr; /* physical addr of data buffer */
bool bf_stale;
bool bf_isnullfunc;
u16 bf_flags;
struct ath_buf_state bf_state;
dma_addr_t bf_dmacontext;