From a951ae2176b982574ffa197455db6c89359fd5eb Mon Sep 17 00:00:00 2001 From: Bob Copeland Date: Wed, 20 Jan 2010 23:51:04 -0500 Subject: ath5k: fix setup for CAB queue The beacon sent gating doesn't seem to work with any combination of flags. Thus, buffered frames tend to stay buffered forever, using up tx descriptors. Instead, use the DBA gating and hold transmission of the buffered frames until 80% of the beacon interval has elapsed using the ready time. This fixes the following error in AP mode: ath5k phy0: no further txbuf available, dropping packet Add a comment to acknowledge that this isn't the best solution. Signed-off-by: Bob Copeland Acked-by: Nick Kossifidis Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath5k/qcu.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/net/wireless/ath/ath5k/qcu.c') diff --git a/drivers/net/wireless/ath/ath5k/qcu.c b/drivers/net/wireless/ath/ath5k/qcu.c index abe36c0d139c..9122a8556f45 100644 --- a/drivers/net/wireless/ath/ath5k/qcu.c +++ b/drivers/net/wireless/ath/ath5k/qcu.c @@ -408,12 +408,13 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue) break; case AR5K_TX_QUEUE_CAB: + /* XXX: use BCN_SENT_GT, if we can figure out how */ AR5K_REG_ENABLE_BITS(ah, AR5K_QUEUE_MISC(queue), - AR5K_QCU_MISC_FRSHED_BCN_SENT_GT | + AR5K_QCU_MISC_FRSHED_DBA_GT | AR5K_QCU_MISC_CBREXP_DIS | AR5K_QCU_MISC_CBREXP_BCN_DIS); - ath5k_hw_reg_write(ah, ((AR5K_TUNE_BEACON_INTERVAL - + ath5k_hw_reg_write(ah, ((tq->tqi_ready_time - (AR5K_TUNE_SW_BEACON_RESP - AR5K_TUNE_DMA_BEACON_RESP) - AR5K_TUNE_ADDITIONAL_SWBA_BACKOFF) * 1024) | -- cgit v1.2.3