On Fri, May 18, 2018 at 5:49 PM, Greg Rose <[email protected]> wrote:
> From: William Tu <[email protected]>
>
> Upstream commit:
> commit 1baf5ebf8954d9bff8fa4e7dd6c416a0cebdb9e2
> Author: William Tu <[email protected]>
> Date: Fri Apr 27 14:16:32 2018 -0700
>
> erspan: auto detect truncated packets.
>
> Currently the truncated bit is set only when the mirrored packet
> is larger than mtu. For certain cases, the packet might already
> been truncated before sending to the erspan tunnel. In this case,
> the patch detect whether the IP header's total length is larger
> than the actual skb->len. If true, this indicated that the
> mirrored packet is truncated and set the erspan truncate bit.
>
> I tested the patch using bpf_skb_change_tail helper function to
> shrink the packet size and send to erspan tunnel.
>
> Reported-by: Xiaoyan Jin <[email protected]>
> Signed-off-by: William Tu <[email protected]>
> Signed-off-by: David S. Miller <[email protected]>
>
> Cc: William Tu <[email protected]>
> Signed-off-by: Greg Rose <[email protected]>
> ---
LGTM.
Acked-by: William Tu <[email protected]>
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