diff options
| author | Rajkumar Manoharan <rmanohar@qca.qualcomm.com> | 2011-08-13 04:58:08 (GMT) |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-08-24 17:59:44 (GMT) |
| commit | 7a12dfdbf508fed2cbd1a9142c6e19341a55527b (patch) | |
| tree | a62b62068dc66a39187baaf93ae0d1af6483a677 /drivers/net/wireless/ath/ath9k/ar9003_mac.c | |
| parent | 16dd7267f460739b3e29d984e73f05c5ffe2b142 (diff) | |
| download | linux-7a12dfdbf508fed2cbd1a9142c6e19341a55527b.tar.xz | |
ath9k_hw: Fix exceed transmission burst-time of 5GHz
The WAR which adds extra delimiters when using RTS/CTS
with aggregation and non-enterprise AR9003 chips.
This extra padding is done after doing all the 4ms limit
checks and hence the total aggregate sizes are exceeding
the allowed duration. This patch limits the aggregate
sizes appropriately after including these extra delimiters.
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/ar9003_mac.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9003_mac.c | 28 |
1 files changed, 2 insertions, 26 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c index 1aadc47..81ccce1 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c @@ -415,36 +415,12 @@ static void ar9003_hw_set11n_ratescenario(struct ath_hw *ah, void *ds, static void ar9003_hw_set11n_aggr_first(struct ath_hw *ah, void *ds, u32 aggrLen) { -#define FIRST_DESC_NDELIMS 60 struct ar9003_txc *ads = (struct ar9003_txc *) ds; ads->ctl12 |= (AR_IsAggr | AR_MoreAggr); - if (ah->ent_mode & AR_ENT_OTP_MPSD) { - u32 ctl17, ndelim; - /* - * Add delimiter when using RTS/CTS with aggregation - * and non enterprise AR9003 card - */ - ctl17 = ads->ctl17; - ndelim = MS(ctl17, AR_PadDelim); - - if (ndelim < FIRST_DESC_NDELIMS) { - aggrLen += (FIRST_DESC_NDELIMS - ndelim) * 4; - ndelim = FIRST_DESC_NDELIMS; - } - - ctl17 &= ~AR_AggrLen; - ctl17 |= SM(aggrLen, AR_AggrLen); - - ctl17 &= ~AR_PadDelim; - ctl17 |= SM(ndelim, AR_PadDelim); - - ads->ctl17 = ctl17; - } else { - ads->ctl17 &= ~AR_AggrLen; - ads->ctl17 |= SM(aggrLen, AR_AggrLen); - } + ads->ctl17 &= ~AR_AggrLen; + ads->ctl17 |= SM(aggrLen, AR_AggrLen); } static void ar9003_hw_set11n_aggr_middle(struct ath_hw *ah, void *ds, |