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From: Matan Azrad <matan@nvidia.com>
To: Jack Min <jackmin@nvidia.com>, Shahaf Shuler <shahafs@nvidia.com>, Slava
Ovsiienko <viacheslavo@nvidia.com>, Jack Min <jackmin@nvidia.com>, Ori Kam
<orika@nvidia.com>
CC: "dev@dpdk.org" <dev@dpdk.org>, "stable@dpdk.org" <stable@dpdk.org>
Thread-Topic: [PATCH] net/mlx5: fix redundant flow after RSS expansion
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Date: Thu, 8 Apr 2021 09:23:15 +0000
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Subject: Re: [dpdk-stable] [PATCH] net/mlx5: fix redundant flow after RSS
expansion
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From: Xiaoyu Min
> When RSS expand, if there is no expansion happened but completion happene=
d
> because user only input next protocol field instead of item i.e, ether ty=
pe =3D=3D
> 0x8100 instead of VLAN, an extra flow is created with missing item in ord=
er to
> filter traffic strictly.
>=20
> However, after [1] and [2] the rte_flow_item_eth itself is enough to filt=
er out
> VLAN traffic, the VLAN item is not needed.
>=20
> This redundant flow will cause faiure in some scenarios on group 0 due to=
they
> are the same FTE.
>=20
> Fixes: fc2dd8dd492f ("ethdev: fix expand RSS flows")
> Cc: stable@dpdk.org
>=20
> [1]:
> commit 09315fc83861 ("ethdev: add VLAN attributes to ethernet and VLAN
> items")
>=20
> [2]:
> commit 86b59a1af671 ("net/mlx5: support VLAN matching fields")
>=20
> Signed-off-by: Xiaoyu Min <jackmin@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>