On Sun, 2008-05-04 at 16:06 +0200, Johannes Berg wrote: > > There are three ways out of this. You could have your own cache > > (I haven't looked at your headers so I don't know whether that > > makes sense), have no cache at all, or add a new field that gets > > added to hard_header_len for the purposes of calculating head > > room. > > I tried the last option, patch below, didn't quite work out yet, but I > got: > > [ 256.241496] KERNEL: assertion (!atomic_read(&sk->sk_wmem_alloc)) > failed at net/packet/af_packet.c (225) Except for that, the patch works fine with mac80211 setting the new netdev fields. I still get lots of reallocations though because I get a lot of cloned packets, not sure why. johannes
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