Fabian Lanze
2012-01-25 10:22:44 UTC
Hi!
When operating a device with madwifi in AP mode I observe, that beacons
sent out by this device reset the TSF timestamp once each minute.
According to what I can see in the source this is not done by the driver
itself but by the hardware/hal. (I used the 0.9.4 snapshot, I don't know
whether this is also the case in ath5k/ath9k)
My questions are:
- Where exactly is the TSF timer resetted?
- What is the reason for these frequently resets? Is this in some way
specific to the Atheros hardware? Or is there a certain reason to force
this reset? "Real" hardware access points seem to reset their TSF timer
much less frequent.
Thanks in advance,
Fabian
When operating a device with madwifi in AP mode I observe, that beacons
sent out by this device reset the TSF timestamp once each minute.
According to what I can see in the source this is not done by the driver
itself but by the hardware/hal. (I used the 0.9.4 snapshot, I don't know
whether this is also the case in ath5k/ath9k)
My questions are:
- Where exactly is the TSF timer resetted?
- What is the reason for these frequently resets? Is this in some way
specific to the Atheros hardware? Or is there a certain reason to force
this reset? "Real" hardware access points seem to reset their TSF timer
much less frequent.
Thanks in advance,
Fabian