On Thu, May 21, 2026 at 6:41 AM Eric Dumazet [off-list ref] wrote:

On Wed, May 20, 2026 at 5:39 PM Rosen Penev [off-list ref] wrote:

quoted

On Wed, May 20, 2026 at 4:57 PM Jakub Kicinski [off-list ref] wrote:

quoted

On Sun, 17 May 2026 12:28:56 -0700 Rosen Penev wrote:

quoted

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?