| commit | fc3b825f2c81a627459fd261faca10afa94cf087 | |
| author | Eli Cooper <elicooper@gmx.com> | |
| Tue, 1 Nov 2016 15:45:12 +0000 (1 23:45 +0800) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Mon, 21 Nov 2016 09:11:34 +0000 (21 10:11 +0100) | ||
| tree | 03939509a9ae99bab13e2fd812dc3d67e7422678 | treesnapshot (tar.gz zip) |
| parent | f5f4b71d56324556015f5d6e3db3d5e5fc05dac8 | commitdiff |
ip6_tunnel: Clear IP6CB in ip6tunnel_xmit()
[ Upstream commit 23f4ffedb7d751c7e298732ba91ca75d224bc1a6 ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 23f4ffedb7d751c7e298732ba91ca75d224bc1a6 ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| include/net/ip6_tunnel.h | diffblobblamehistory |