On 15 Jan 2026, at 20:06, [email protected] wrote:
> From: Numan Siddique <[email protected]>
>
> The netdev-offload-tc module uses a flow's recirc_id (a uint32_t)
> as the TC flower chain ID during offloading. However, the kernel's
> TC implementation reserves the upper 4 bits of the chain index for
> extended action opcodes. If a recirc_id exceeds (2^28 - 1), the
> kernel rejects the flow offload with EINVAL. This patch caps the
> maximum recirc_id to (2^28 - 1) to prevent these failures.
>
> This limit is sufficiently high that it is unlikely to impact the
> number of active datapath flows in practice.
>
> Reported-at:
> https://mail.openvswitch.org/pipermail/ovs-dev/2025-November/427485.html
> Suggested-by: Ilya Maximets <[email protected]>
> Suggested-by: Eelco Chaudron <[email protected]>
> Signed-off-by: Numan Siddique <[email protected]>
> ---
Thanks for following this through! It looks good to me.
Acked-by: Eelco Chaudron <[email protected]>
_______________________________________________
dev mailing list
[email protected]
https://mail.openvswitch.org/mailman/listinfo/ovs-dev
