From: David S. Miller Date: Thu, 29 Jul 2021 11:18:51 +0000 (+0100) Subject: Merge branch 'skb-gro-optimize' X-Git-Tag: libata-5.15-2021-09-05~51^2~362 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=8cb79af5c63ff2dbcab048085302256dd7e8208d;p=linux-block.git Merge branch 'skb-gro-optimize' Paolo Abeni says: ==================== sk_buff: optimize GRO for the common case This is a trimmed down revision of "sk_buff: optimize layout for GRO", specifically dropping the changes to the sk_buff layout[1]. This series tries to accomplish 2 goals: - optimize the GRO stage for the most common scenario, avoiding a bunch of conditional and some more code - let owned skbs entering the GRO engine, allowing backpressure in the veth GRO forward path. A new sk_buff flag (!!!) is introduced and maintained for GRO's sake. Such field uses an existing hole, so there is no change to the sk_buff size. [1] two main reasons: - move skb->inner_ field requires some extra care, as some in kernel users access and the fields regardless of skb->encapsulation. - extending secmark size clash with ct and nft uAPIs address the all above is possible, I think, but for sure not in a single series. ==================== Signed-off-by: David S. Miller --- 8cb79af5c63ff2dbcab048085302256dd7e8208d