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SubjectRe: [PATCH net-next] net: core: allow fast GRO for skbs with Ethernet header in head
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From: Alexander Lobakin <alobakin@dlink.ru>
Date: Tue, 12 Nov 2019 15:28:43 +0300

> Commit 78d3fd0b7de8 ("gro: Only use skb_gro_header for completely
> non-linear packets") back in May'09 (2.6.31-rc1) has changed the
> original condition '!skb_headlen(skb)' to the current
> 'skb_mac_header(skb) == skb_tail_pointer(skb)' in gro_reset_offset()
> saying: "Since the drivers that need this optimisation all provide
> completely non-linear packets".

Please reference the appropriate SHA1-ID both here in this paragraph and
also in an appropriate Fixes: tag.

If this goes so far back that it is before GIT, then you need to provide
a reference to the patch posting via lore.kernel.org or similar because
it is absolutely essentialy for people reviewing this patch to be able
to do some digging into why the condition is code the way that it is
currently.

Thank you.

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