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Date: Thu, 10 Apr 2014 21:42:54 -0400 (EDT) From: David Miller <davem@...emloft.net> To: fw@...len.de Cc: netdev@...r.kernel.org, eric.dumazet@...il.com Subject: Re: [PATCH v2] net: core: don't account for udp header size when computing seglen From: Florian Westphal <fw@...len.de> Date: Wed, 9 Apr 2014 10:28:50 +0200 > In case of tcp, gso_size contains the tcpmss. > > For UFO (udp fragmentation offloading) skbs, gso_size is the fragment > payload size, i.e. we must not account for udp header size. > > Otherwise, when using virtio drivers, a to-be-forwarded UFO GSO packet > will be needlessly fragmented in the forward path, because we think its > individual segments are too large for the outgoing link. > > Fixes: fe6cc55f3a9a053 ("net: ip, ipv6: handle gso skbs in forwarding path") > Cc: Eric Dumazet <eric.dumazet@...il.com> > Reported-by: Tobias Brunner <tobias@...ongswan.org> > Signed-off-by: Florian Westphal <fw@...len.de> > --- > changes since v1: > - update 'Fixes:' tag. Applied and queued up for -stable, thanks! -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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