From: Jakub Kicinski <kuba@kernel.org>
To: Leon Romanovsky <leon@kernel.org>
Cc: Alexandra Kossovsky <Alexandra.Kossovsky@oktetlabs.ru>,
Saeed Mahameed <saeedm@nvidia.com>,
Maxim Mikityanskiy <maximmi@nvidia.com>,
netdev@vger.kernel.org
Subject: Re: [PATCH] net/mlx5e: parameter to disable symmetric hash
Date: Wed, 14 Dec 2022 09:01:24 -0800 [thread overview]
Message-ID: <20221214090124.4c01a360@kernel.org> (raw)
In-Reply-To: <Y5nfPjloqVqmWPyn@gondor.oktetlabs.ru>
On Wed, 14 Dec 2022 17:35:42 +0300 Alexandra Kossovsky wrote:
> Some AF_XDP applications assume standard Topelitz hash when spreading
> traffic accross queues via RSS. MLX5 driver always set "symmetric"
> bit, which results in unexpected queues for any particular connection.
>
> With this patch is is possible to disable that symmetric bit via
> use_symmetric_hash module parameter, and use the standard Toeplitz hash
> with well-known predictable result, same as for other NICs.
This module param, OTOH, not okay..
[ https://lore.kernel.org/all/20221214085106.42a88df1@kernel.org/ ]
prev parent reply other threads:[~2022-12-14 17:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-14 14:35 [PATCH] net/mlx5e: parameter to disable symmetric hash Alexandra Kossovsky
2022-12-14 17:01 ` Jakub Kicinski [this message]
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