From: Eli Cooper <elicoo...@gmx.com> Date: Tue, 1 Nov 2016 23:45:12 +0800
> 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: sta...@vger.kernel.org > Signed-off-by: Eli Cooper <elicoo...@gmx.com> > --- > v3: moves to ip6tunnel_xmit() and clears IP6CB unconditionally > v2: clears the whole IP6CB altogether and does it after encapsulation Applied and queued up for -stable.
