Re: [PATCH net v3 1/3] ipv4: ignore dst hint for multipath routes

Ido Schimmel
2023-08-28T15:15:50Z

On Mon, Aug 28, 2023 at 01:32:19PM +0200, Sriram Yagnaraman wrote:
> Route hints when the nexthop is part of a multipath group causes packets
> in the same receive batch to be sent to the same nexthop irrespective of
> the multipath hash of the packet. So, do not extract route hint for
> packets whose destination is part of a multipath group.
>
> A new SKB flag IPSKB_MULTIPATH is introduced for this purpose, set the
> flag when route is looked up in ip_mkroute_input() and use it in
> ip_extract_route_hint() to check for the existence of the flag.
>
> Fixes: 02b24941619f ("ipv4: use dst hint for ipv4 list receive")
> Signed-off-by: Sriram Yagnaraman <sriram.yagnaraman@est.tech>

Reviewed-by: Ido Schimmel <idosch@nvidia.com>