On Thu, May 21, 2026 at 6:41 AM Eric Dumazet <[email protected]> wrote:
>
> On Wed, May 20, 2026 at 5:39 PM Rosen Penev <[email protected]> wrote:
> >
> > On Wed, May 20, 2026 at 4:57 PM Jakub Kicinski <[email protected]> wrote:
> > >
> > > On Sun, 17 May 2026 12:28:56 -0700 Rosen Penev wrote:
> > > > Collect received skbs on a local list during RX polling and pass the
> > > > completed batch to netif_receive_skb_list(). This lets the networking
> > > > stack process packets from a poll cycle in bulk instead of handing each
> > > > skb up individually.
> > >
> > > GRO should be even better.
> > GRO will result in slower routing performance because there is no
> > hardware checksum.
>
> Then provide a knob or something, instead of trying to avoid GRO.
>
> For end hosts (forwarding not enabled), checksum will need to be
> computed anyway.
> GRO should be faster for them.
>
> Note that GRO also uses netif_receive_skb_list_internal()
so you recommend switching to napi_gro_receive even though there's no
RX hardware checksum?
