From: Felix Fietkau <nbd@openwrt.org>
To: linux-wireless@vger.kernel.org
Cc: linville@tuxdriver.com, lrodriguez@atheros.com
Subject: [PATCH 4/9] ath9k: update the ath_max_4ms_framelen table
Date: Sun, 18 Apr 2010 16:56:37 +0200 [thread overview]
Message-ID: <1271602602-8538-4-git-send-email-nbd@openwrt.org> (raw)
In-Reply-To: <1271602602-8538-3-git-send-email-nbd@openwrt.org>
Include MCS0-31 and also add SGI for HT20. This makes it
possible to support more different rate combinations with
newer hardware.
Based on a patch by Selvam. T.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
drivers/net/wireless/ath/ath9k/xmit.c | 41 +++++++++++++++++++++-----------
1 files changed, 27 insertions(+), 14 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 5d3d563..4078982 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -71,24 +71,36 @@ static void ath_tx_rc_status(struct ath_buf *bf, struct ath_tx_status *ts,
int nbad, int txok, bool update_rc);
enum {
- MCS_DEFAULT,
+ MCS_HT20,
+ MCS_HT20_SGI,
MCS_HT40,
MCS_HT40_SGI,
};
-static int ath_max_4ms_framelen[3][16] = {
- [MCS_DEFAULT] = {
- 3216, 6434, 9650, 12868, 19304, 25740, 28956, 32180,
- 6430, 12860, 19300, 25736, 38600, 51472, 57890, 64320,
+static int ath_max_4ms_framelen[4][32] = {
+ [MCS_HT20] = {
+ 3212, 6432, 9648, 12864, 19300, 25736, 28952, 32172,
+ 6424, 12852, 19280, 25708, 38568, 51424, 57852, 64280,
+ 9628, 19260, 28896, 38528, 57792, 65532, 65532, 65532,
+ 12828, 25656, 38488, 51320, 65532, 65532, 65532, 65532,
+ },
+ [MCS_HT20_SGI] = {
+ 3572, 7144, 10720, 14296, 21444, 28596, 32172, 35744,
+ 7140, 14284, 21428, 28568, 42856, 57144, 64288, 65532,
+ 10700, 21408, 32112, 42816, 64228, 65532, 65532, 65532,
+ 14256, 28516, 42780, 57040, 65532, 65532, 65532, 65532,
},
[MCS_HT40] = {
- 6684, 13368, 20052, 26738, 40104, 53476, 60156, 66840,
- 13360, 26720, 40080, 53440, 80160, 106880, 120240, 133600,
+ 6680, 13360, 20044, 26724, 40092, 53456, 60140, 65532,
+ 13348, 26700, 40052, 53400, 65532, 65532, 65532, 65532,
+ 20004, 40008, 60016, 65532, 65532, 65532, 65532, 65532,
+ 26644, 53292, 65532, 65532, 65532, 65532, 65532, 65532,
},
[MCS_HT40_SGI] = {
- /* TODO: Only MCS 7 and 15 updated, recalculate the rest */
- 6684, 13368, 20052, 26738, 40104, 53476, 60156, 74200,
- 13360, 26720, 40080, 53440, 80160, 106880, 120240, 148400,
+ 7420, 14844, 22272, 29696, 44544, 59396, 65532, 65532,
+ 14832, 29668, 44504, 59340, 65532, 65532, 65532, 65532,
+ 22232, 44464, 65532, 65532, 65532, 65532, 65532, 65532,
+ 29616, 59232, 65532, 65532, 65532, 65532, 65532, 65532,
}
};
@@ -538,12 +550,13 @@ static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
break;
}
- if (rates[i].flags & IEEE80211_TX_RC_SHORT_GI)
- modeidx = MCS_HT40_SGI;
- else if (rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
+ if (rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
modeidx = MCS_HT40;
else
- modeidx = MCS_DEFAULT;
+ modeidx = MCS_HT20;
+
+ if (rates[i].flags & IEEE80211_TX_RC_SHORT_GI)
+ modeidx++;
frmlen = ath_max_4ms_framelen[modeidx][rates[i].idx];
max_4ms_framelen = min(max_4ms_framelen, frmlen);
--
1.6.4.2
next prev parent reply other threads:[~2010-04-18 15:32 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-18 14:56 [PATCH 1/9] ath9k: check for specific rx stuck conditions and recover from them Felix Fietkau
2010-04-18 14:56 ` [PATCH 2/9] ath9k: clean up tx buffer handling Felix Fietkau
2010-04-18 14:56 ` [PATCH 3/9] ath9k: update the MCS mask for MCS16 and above Felix Fietkau
2010-04-18 14:56 ` Felix Fietkau [this message]
2010-04-18 14:56 ` [PATCH 5/9] ath9k: reduce the bits_per_symbol table size, support more streams Felix Fietkau
2010-04-18 14:56 ` [PATCH 6/9] ath9k: initialize the number of tx/rx streams correctly Felix Fietkau
2010-04-18 14:56 ` [PATCH 7/9] mac80211: add flags for STBC (Space-Time Block Coding) Felix Fietkau
2010-04-18 14:56 ` [PATCH 8/9] ath9k: add support for Tx and Rx STBC Felix Fietkau
2010-04-18 14:56 ` [PATCH 9/9] ath9k: set the STBC flag in rate control if the peer supports it Felix Fietkau
2010-04-19 12:22 ` [PATCH 8/9] ath9k: add support for Tx and Rx STBC Björn Smedman
2010-04-19 12:28 ` Felix Fietkau
2010-04-18 15:53 ` [PATCH 7/9] mac80211: add flags for STBC (Space-Time Block Coding) Johannes Berg
2010-04-18 16:05 ` Felix Fietkau
2010-04-19 5:57 ` Johannes Berg
2010-04-19 8:45 ` Felix Fietkau
2010-04-19 8:59 ` Johannes Berg
2010-04-19 9:06 ` Felix Fietkau
2010-04-19 9:09 ` Johannes Berg
2010-04-19 10:14 ` Felix Fietkau
2010-04-19 10:19 ` Johannes Berg
2010-04-19 10:51 ` Felix Fietkau
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