Re: [PATCH v2 4/5] bpf: allow new DECAP flags and add guard rails

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From: Willem de Bruijn

Date: Fri Mar 20 2026 - 20:40:33 EST

Nick Hudson wrote:
> Add checks to require shrink-only decap, reject conflicting decap flag
> combinations, and verify removed length is sufficient for claimed header
> decapsulation.
>
> Co-developed-by: Max Tottenham <mtottenh@xxxxxxxxxx>
> Signed-off-by: Max Tottenham <mtottenh@xxxxxxxxxx>
> Co-developed-by: Anna Glasgall <aglasgal@xxxxxxxxxx>
> Signed-off-by: Anna Glasgall <aglasgal@xxxxxxxxxx>
> Signed-off-by: Nick Hudson <nhudson@xxxxxxxxxx>

Reviewed-by: Willem de Bruijn <willemb@xxxxxxxxxx>