diff options
| author | Bruno Randolf <br1@einfach.org> | 2010-09-27 12:22:21 +0900 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-09-28 15:47:57 -0400 |
| commit | 7f896126017830b29cf501d246ee32b81e359acd (patch) | |
| tree | c7c1444a291fffb91ef96c6cae281f821c8ff8d0 /drivers/net/wireless/ath/ath5k/base.c | |
| parent | 4a79f2c517cce31c3b25aab0ec5078368b22c363 (diff) | |
ath5k: Check and fix ATIM window
This patch adds sanity-checks for the beacon timers and especially the ATIM
window to ath5k. It is basically the same what i did for madwifi two years ago
and fixes a problem in IBSS mode which has been described as "ramping" pings.
See the code comments for a more detailed description and these links:
http://madwifi-project.org/ticket/1154
http://madwifi-project.org/changeset/3867
http://thread.gmane.org/gmane.linux.drivers.madwifi.devel/6066
Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/base.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/base.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c index 95072db0ec21..4103765000ea 100644 --- a/drivers/net/wireless/ath/ath5k/base.c +++ b/drivers/net/wireless/ath/ath5k/base.c @@ -1191,6 +1191,15 @@ ath5k_check_ibss_tsf(struct ath5k_softc *sc, struct sk_buff *skb, */ if (hw_tu >= sc->nexttbtt) ath5k_beacon_update_timers(sc, bc_tstamp); + + /* Check if the beacon timers are still correct, because a TSF + * update might have created a window between them - for a + * longer description see the comment of this function: */ + if (!ath5k_hw_check_beacon_timers(sc->ah, sc->bintval)) { + ath5k_beacon_update_timers(sc, bc_tstamp); + ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, + "fixed beacon timers after beacon receive\n"); + } } } |