Re: [PATCH v2 net-next 0/3] gro: micro-optimize dev_gro_receive()

On Sat, Mar 13, 2021 at 9:30 PM Alexander Lobakin [off-list ref] wrote:

This random series addresses some of suboptimal constructions used
in the main GRO entry point.
The main body is gro_list_prepare() simplification and pointer usage
optimization in dev_gro_receive() itself. Being mostly cosmetic, it
gives like +10 Mbps on my setup to both TCP and UDP (both single- and
multi-flow).

Since v1 [0]:
 - drop the replacement of bucket index calculation with
   reciprocal_scale() since it makes absolutely no sense (Eric);
 - improve stack usage in dev_gro_receive() (Eric);
 - reverse the order of patches to avoid changes superseding.

[0] https://lore.kernel.org/netdev/20210312162127.239795-1-alobakin@pm.me (local)

SGTM, thanks.

Reviewed-by: Eric Dumazet <redacted>