Johannes Berg <johannes@xxxxxxxxxxxxxxxx> writes:
> From: Johannes Berg <johannes.berg@xxxxxxxxx>
>
> My previous commit to not apply flow control to management frames
> that are going over TXQs (which is currently only the case for
> iwlwifi, I think) broke things, with iwlwifi firmware crashing on
> certain frames. As it turns out, that was due to the frame being
> too short: space for the MIC wasn't added at the end of encrypted
> management frames.
>
> Clearly, this is due to using the 'frags' queue - this is meant
> only for frames that have already been processed for TX, and the
> code in ieee80211_tx_dequeue() just returns them. This caused all
> management frames to now not get any TX processing.
>
> To fix this, use IEEE80211_TX_INTCFL_NEED_TXPROCESSING (which is
> currently used only in other circumstances) to indicate that the
> frames need processing, and clear it immediately after so that,
> at least in theory, MMPDUs can be fragmented.
>
> Fixes: 73bc9e0af594 ("mac80211: don't apply flow control on management frames")
> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Acked-by: Toke Høiland-Jørgensen <toke@xxxxxxxxxx>
