ath9k: Optimize TBTT/DTIM calculation for timers

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The previous version used a simple loop to go through all Beacon
frames when determining the next TBTT and DTIM count. This is not too
bad for the case where the setup happens before timesync (i.e., very
small TSF), but this can become very heavy operation if a short Beacon
interval is used and the current TSF is large.

In preparation for a patch to update timer setup based on Beacon
timestamp, optimize this routine to take fixed time regardless of the
actual TSF value.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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Jouni Malinen 2009-05-20 21:56:39 +03:00 • committed by John W. Linville

parent d26285f873

commit 267a901274

1 changed files with 21 additions and 7 deletions

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28

drivers/net/wireless/ath/ath9k/beacon.c

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