On Sun, 2008-05-04 at 17:44 +0800, Herbert Xu wrote: > On Sun, May 04, 2008 at 11:14:49AM +0200, Johannes Berg wrote: > > > > I just re-did the test, and I definitely need 29 more bytes on, for > > example, the IPv6 autodiscovery packets and ICMP packets generated with > > ping(8). Some of them even need additional tailroom. > > Could you find out the code path that created the skb in the > kernel so we can see why there isn't enough head room? Yeah I was just considering putting a stacktrace into the skb when it's allocated. Haven't done, lunchtime now. johannes
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