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From: Bing Zhao <bingz@nvidia.com>
To: Suanming Mou <suanmingm@nvidia.com>, Dariusz Sosnowski
<dsosnowski@nvidia.com>, Slava Ovsiienko <viacheslavo@nvidia.com>, Ori Kam
<orika@nvidia.com>, Matan Azrad <matan@nvidia.com>
CC: "dev@dpdk.org" <dev@dpdk.org>, "stable@dpdk.org" <stable@dpdk.org>
Subject: RE: [PATCH v2] doc: update match with compare result item limitation
Thread-Topic: [PATCH v2] doc: update match with compare result item limitation
Thread-Index: AQHbMC8fOkLUOnWhjUSQB69SQsnG9bKzQ/4g
Date: Tue, 12 Nov 2024 07:13:16 +0000
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References: <20241105014736.1006927-1-suanmingm@nvidia.com>
<20241106093415.1062069-1-suanmingm@nvidia.com>
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Thanks.
> -----Original Message-----
> From: Suanming Mou <suanmingm@nvidia.com>
> Sent: Wednesday, November 6, 2024 5:34 PM
> To: Dariusz Sosnowski <dsosnowski@nvidia.com>; Slava Ovsiienko
> <viacheslavo@nvidia.com>; Bing Zhao <bingz@nvidia.com>; Ori Kam
> <orika@nvidia.com>; Matan Azrad <matan@nvidia.com>
> Cc: dev@dpdk.org; stable@dpdk.org
> Subject: [PATCH v2] doc: update match with compare result item limitation
>=20
> In switch mode, when ``repr_matching_en`` flag is enabled in the devarg,
> the match with compare result item is not supported to the ``ingress``
> rule as an implicit REPRESENTED_PORT need to be added to the matcher.
> That REPRESENTED_PORT item conflicts with the single item limitation for
> match with compare result item.
>=20
> Fixes: cb25df7ce9d6 ("net/mlx5: support comparison matching")
> Cc: stable@dpdk.org
>=20
> Signed-off-by: Suanming Mou <suanmingm@nvidia.com>
Acked-by: Bing Zhao <bingz@nvidia.com>
> ---
>=20
> v2: Add `repr_matching_en`` enabled by default explanation.
>=20
> ---
> doc/guides/nics/mlx5.rst | 5 +++++
> 1 file changed, 5 insertions(+)
>=20
> diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst index
> 7ced6ca8f9..64933a0823 100644
> --- a/doc/guides/nics/mlx5.rst
> +++ b/doc/guides/nics/mlx5.rst
> @@ -460,6 +460,11 @@ Limitations
> - The field type ``RTE_FLOW_FIELD_VALUE`` must be the base (``b``)
> field.
> - The field type ``RTE_FLOW_FIELD_RANDOM`` can only be compared with
> ``RTE_FLOW_FIELD_VALUE``.
> + - In switch mode, when ``repr_matching_en`` flag is enabled (by
> default)
> + in the devarg, the match with compare result item is not supported t=
o
> + the ``ingress`` rule as an implicit REPRESENTED_PORT need to be adde=
d
> to
> + the matcher. That REPRESENTED_PORT item conflicts with the single
> item
> + limitation for match with compare result item.
>=20
> - No Tx metadata go to the E-Switch steering domain for the Flow group 0=
.
> The flows within group 0 and set metadata action are rejected by
> hardware.
> --
> 2.34.1