On 12 November 2012 11:40, Sam Leffler <sleffler@xxxxxxxxxx> wrote: > From my experience doing tdma on ath chipsets I know the timestamp is > a snapshot of the tsf recorded by the dma engine when it writes the > descriptor on dma completion. This was only legacy frames; don't know > how things work for aggregate frames. RIght. Thomas did some testing (see ath9k-devel) and sees the TSF for aggregate frames as being the timestamp of the first frame. No idea if it's the TS of the end of the first frame in an aggregate, or the beginning of the first frame in the aggregate. Quite likely at anything other than the lowest MCS, it's going to be well within a handful of 100uS. Adrian -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
