Re: [PATCH v1 1/2] net/dpaa2: revert inner RSS level support

[Thomas Monjalon <thomas@monjalon.net>]

21/07/2026 14:55, Hemant Agrawal:
> Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
> 
> On 21-07-2026 15:26, Thomas Monjalon wrote:
> > I'm waiting for an urgent reply from the maintainers here.
> >
> >
> > 20/07/2026 15:34, Maxime Leroy:
> >> This reverts commit 618a06c53d479ae576ff01c7d274b10c60b3d3d5.
> >>
> >> RTE_ETH_RSS_LEVEL_INNERMOST was mapped to the innermost IP instance by
> >> programming the IP key extracts with hdr_index = HDR_INDEX_LAST. The
> >> hardware only resolves that index when several IP headers are stacked.
> >> A non-tunnelled frame carries a single IP header, so the extract
> >> resolves to nothing, the RSS hash is constant and every such frame is
> >> steered to a single Rx queue.
> >>
> >> The ethdev API defines INNERMOST by encapsulation level, not by the
> >> presence of a tunnel: a plain frame's innermost header is its only IP
> >> header and must be hashed. The dpaa2 hardware cannot honour that and
> >> keep true inner-only semantics for tunnelled traffic at the same time,
> >> so the level cannot be implemented correctly as merged.
> >>
> >> Revert it. Hashing the outer plus the inner IP under the PMD default
> >> level, which spreads both plain and tunnelled traffic, is added in a
> >> follow-up.
> >>
> >> Signed-off-by: Maxime Leroy <maxime@leroys.fr>

Applied, thanks.