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wl18xx: limit Tx for the AP single-STA-in-PSM case 

Treat a single connected STA in PSM as a slow link and regulate Tx speed
according to slow link priority/stop thresholds.
This allows us to avoid flooding the FW, while delivering decent
throughput to a peer in forced-PSM.

[Small simplification of the if statements -- Luca]

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
This commit is contained in:
Arik Nemtsov 2012-11-28 11:42:41 +02:00 committed by Luciano Coelho
parent f1626fd898
commit 98323895c0
1 changed files with 4 additions and 2 deletions
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6
drivers/net/wireless/ti/wl18xx/main.c
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@ -1410,7 +1410,8 @@ static bool wl18xx_lnk_high_prio(struct wl1271 *wl, u8 hlid,
return false;
/* the priority thresholds are taken from FW */
if (test_bit(hlid, (unsigned long *)&wl->fw_fast_lnk_map))
if (test_bit(hlid, (unsigned long *)&wl->fw_fast_lnk_map) &&
!test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map))
thold = status_priv->tx_fast_link_prio_threshold;
else
thold = status_priv->tx_slow_link_prio_threshold;
@ -1428,7 +1429,8 @@ static bool wl18xx_lnk_low_prio(struct wl1271 *wl, u8 hlid,
if (test_bit(hlid, (unsigned long *)&suspend_bitmap))
thold = status_priv->tx_suspend_threshold;
else if (test_bit(hlid, (unsigned long *)&wl->fw_fast_lnk_map))
else if (test_bit(hlid, (unsigned long *)&wl->fw_fast_lnk_map) &&
!test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map))
thold = status_priv->tx_fast_stop_threshold;
else
thold = status_priv->tx_slow_stop_threshold;