On 2010-09-21 7:25 PM, Ben Greear wrote: > On 09/21/2010 05:19 AM, Felix Fietkau wrote: >> On 2010-09-21 2:08 PM, Ben Greear wrote: > >>> If you have any more details on this, please let me know. I'm going to >>> attempt to fix it...I certainly have a good test case :) >> ath_tx_complete_aggr completes an A-MPDU frame, which typically triggers >> the release of the next A-MPDU to the hw queue. >> To keep track of the Block ACK window, it needs to look up the TID, for >> which it needs a STA pointer. At that level, the driver typically >> doesn't have access to the vif. >> >> It might be possible to fix this by adding another sta lookup helper >> function in mac80211 that takes another address argument for the BSSID, >> so that it can get the sta entry for the correct vif. I don't know if >> Johannes wants something like that though. > > Could we just poke a pointer to the STA into the ath_buf structure? No, that doesn't work because of RCU.
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