From: Eric Dumazet <eric.duma...@gmail.com>
Date: Mon, 19 Oct 2015 20:40:17 -0700
> From: Eric Dumazet <eduma...@google.com>
>
> Tom Herbert added SIT support to GRO with commit
> 19424e052fb4 ("sit: Add gro callbacks to sit_offload"),
> later reverted by Herbert Xu.
>
> The problem came because Tom patch was building GRO
> packets without proper meta data : If packets were locally
> delivered, we would not care.
>
> But if packets needed to be forwarded, GSO engine was not
> able to segment individual segments.
>
> With the following patch, we correctly set skb->encapsulation
> and inner network header. We also update gso_type.
>
> Tested:
...
> Checked on server traffic copied on dummy0 and verify segments were
> properly rebuilt, with proper IP headers, TCP checksums...
>
> tcpdump on eth0 shows proper GRO aggregation takes place.
>
> Signed-off-by: Eric Dumazet <eduma...@google.com>
Applied.
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