2010/6/29 Felix Fietkau <nbd@xxxxxxxxxxx>:
> One beacon miss should never cause a TSF reset. Only a lot of
> consecutive beacon misses trigger a hardware reset, which then resets
> the TSF. Looking at your log, it appears that the beacon miss is a
> symptom rather than a cause of the TSF jumps.
> Can you add a debug statement to the hw reset function to see if it's
> called before the TSF jumps?
Yup, seems to be a hardware reset. Added an ath_print ("Reset HW!") at
the beginning of ath9k_hw_reset() and used debug mask 0x101:
...
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: slot 3 [tsf 14863367
tsftu 14515 intval 100] vif (null)
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: slot 2 [tsf 14888967
tsftu 14540 intval 100] vif (null)
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: slot 1 [tsf 14914568
tsftu 14565 intval 100] vif (null)
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: Reset HW!
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: ah->misc_mode 0xc
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: Setting CFG 0x10a
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: slot 0 [tsf 80123
tsftu 78 intval 100] vif 80945e70
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: missed 1 consecutive beacons
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: Reset HW!
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: ah->misc_mode 0xc
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: Setting CFG 0x10a
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: slot 0 [tsf 80989
tsftu 79 intval 100] vif 80945e70
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: missed 1 consecutive beacons
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: resume beacon xmit
after 1 misses
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: slot 3 [tsf 117792
tsftu 115 intval 100] vif (null)
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: slot 2 [tsf 143368
tsftu 140 intval 100] vif (null)
Jan 1 00:01:59 OpenWrt user.debug kernel: ath: slot 1 [tsf 168967
tsftu 165 intval 100] vif (null)
...
> - Felix
>
/Björn
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