Felix Fietkau <nbd@xxxxxxxx> writes: > I have not done any further tests, but based on your analysis, I think I > finally understand what's causing this issue: > The CCMP PN (crypto IV) is assigned in the tx path before a packet is > put into the txq. It is also used to protect against replay attacks, so > it is sensitive to reordering. The receiver is simply dropping any > packet where the PN value is lower than the highest PN received so far. > To fix this, we will have to move the IV/PN assignment to > ieee80211_tx_dequeue. Indeed this seems to be the cause of the problem. Thanks! Will send a patch once we've run it through another couple rounds of testing. Looks promising so far :) -Toke
