> > > > As the timestamp of 4 frames are the same or or the sum of bytes of 4 > > frames is 1542 bytes as the descriptor gives 1542 ? I thought ampdu > >>1500 bytes (4K or 8K) > > Is it because frames are split up ( before ath_tx_complete_buf()) on > > their way back to mac80211. > Frames are variable length, so obviously A-MPDUs are as well. An A-MPDU > is simply a bunch of MPDUs sent together with one PHY header, separated > by delimiters. > I know the above basics :-) I was asking in the specific case I have shown in the email, how to interpret the ath_tx_status entries in this case. > *[315063930, 14,[[65.0, 4], [58.5, 5], [65.0, 5]], 706,1542]* > *[315063930, 14,[[65.0, 4], [58.5, 5], [65.0, 5]], 707,1542]* > *[315063930, 14,[[65.0, 4], [58.5, 5], [65.0, 5]], 708,1542]* > *[315063930, 14,[[65.0, 4], [58.5, 5], [65.0, 5]], 709,1542]*
Is the ampdu size=1542 ? consisting of 4 frames with seq.no. 706-709 ? or size=1542*4. > > (2) Another scenerio that intrigued me was the following : > > [timestamp,retx count,rate,seq no. , framesize ] > > [315065076,0, 65.0, [], *710*, 1542] > > [315065076,14, 65.0,[[65.0, 4], [58.5, 5], [65.0, 5]], *711*, 1542] > > [315065599,,0, 65.0,[], *712*, 1542] > > If these two (710,711) were sent at the same time : are they ampdu ? I > > guess not ! > > But there are two different values of rates in ath_rx_status descriptor, > > which I can't reconcile with. > > > > Please throw some light on the above two cases. > There's code in current ath9k that passes the A-MPDU rx status to > I am talking here about *tx* status in ath9k/xmit.c. Please notice that I am finding difficulty In the xmit path. In recv.c, I see there is a rs_moreaggr flag in ath_*rx*_status which I can look for aggregation. mac80211 for inclusion in radiotap. I suggest you rely on hardware > information instead of guesswork. I am still confused what the hardware feedback is in ath_*tx*_status in xmit.c > > - Felix > >
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