On Mon, 2017-08-21 at 15:32 +0200, Toke Høiland-Jørgensen wrote: > > > + struct ieee80211_vif *vif; > > struct ieee80211_key_conf *hw_key; > > u32 flags; > > - /* 4 bytes free */ > > + codel_time_t enqueue_time; > > A side effect of this is that enqueue_time will be valid in the > driver; which is good as far as I'm concerned (I've been thinking > about using it to make decisions about when to stop retrying a > frame). Well, I think we need to do a lot more to allow that, but I guess ultimately it would be possible - though we have this as codel_time_t so the driver doesn't really know the reference etc. immediately. > If we want to save the four bytes, is there any reason we can't just > change the codel code to use skb->tstamp instead? I didn't really want to go into that. Any comments on the patch itself? I don't think I even merged this yet. johannes