Eli Cooper 23f4ffedb7
ip6_tunnel: Clear IP6CB in ip6tunnel_xmit() ...
skb->cb may contain data from previous layers. In the observed scenario,
the garbage data were misinterpreted as IP6CB(skb)->frag_max_size, so
that small packets sent through the tunnel are mistakenly fragmented.
This patch unconditionally clears the control buffer in ip6tunnel_xmit(),
which affects ip6_tunnel, ip6_udp_tunnel and ip6_gre. Currently none of
these tunnels set IP6CB(skb)->flags, otherwise it needs to be done earlier.
Cc: stable@vger.kernel.org
Signed-off-by: Eli Cooper <elicooper@gmx.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
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Eli Cooper
23f4ffedb7