From: Jarno Rajahalme <ja...@ovn.org> Date: Tue, 3 May 2016 16:10:21 -0700
> UDP tunnel segmentation code relies on the inner offsets being set for > an UDP tunnel GSO packet, but the inner *_complete() functions will > set the inner offsets only if 'encapsulation' is set before calling > them. Currently, udp_gro_complete() sets 'encapsulation' only after > the inner *_complete() functions are done. This causes the inner > offsets having invalid values after udp_gro_complete() returns, which > in turn will make it impossible to properly segment the packet in case > it needs to be forwarded, which would be visible to the user either as > invalid packets being sent or as packet loss. > > This patch fixes this by setting skb's 'encapsulation' in > udp_gro_complete() before calling into the inner complete functions, > and by making each possible UDP tunnel gro_complete() callback set the > inner_mac_header to the beginning of the tunnel payload. > > Signed-off-by: Jarno Rajahalme <ja...@ovn.org> > --- > v3: Added setting inner_mac_header from all possible callbacks to cover > cases where there is no inner mac header. Applied.
