From: Edward Cree <ec...@solarflare.com>
Date: Tue, 19 Sep 2017 18:45:56 +0100
> Since XDP's view of the packet includes the MAC header, moving the start-
> of-packet with bpf_xdp_adjust_head needs to also update the offset of the
> MAC header (which is relative to skb->head, not to the skb->data that was
> changed).
> Without this, tcpdump sees packets starting from the old MAC header rather
> than the new one, at least in my tests on the loopback device.
>
> Fixes: b5cdae3291f7 ("net: Generic XDP")
> Signed-off-by: Edward Cree <ec...@solarflare.com>
Applied and queued up for -stable, thanks Edward.
