netdev - Re: [PATCH mlx5-next v1 2/8] net/mlx5: Add support for flow table destination number

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Message-ID: <20180712212618.GS30390@mellanox.com>
Date:   Thu, 12 Jul 2018 15:26:18 -0600
From:   Jason Gunthorpe <jgg@...lanox.com>
To:     Or Gerlitz <gerlitz.or@...il.com>
Cc:     Yishai Hadas <yishaih@...lanox.com>,
        Doug Ledford <dledford@...hat.com>,
        Leon Romanovsky <leonro@...lanox.com>,
        RDMA mailing list <linux-rdma@...r.kernel.org>,
        Saeed Mahameed <saeedm@...lanox.com>,
        linux-netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH mlx5-next v1 2/8] net/mlx5: Add support for flow table
 destination number

On Fri, Jul 13, 2018 at 12:00:41AM +0300, Or Gerlitz wrote:
> On Wed, Jul 11, 2018 at 2:10 PM, Leon Romanovsky <leon@...nel.org> wrote:
> > From: Yishai Hadas <yishaih@...lanox.com>
> >
> > Add support to set a destination from a flow table number.
> > This functionality will be used in downstream patches from this
> > series by the DEVX stuff.
> 
> Reading your cover letter, I still don't understand what is missing
> in the current mlx5 fs core API for your needs. After all, you do
> create flow tables from the IB driver through fs core calls, right?
> so @ the end of the day, you have the FT pointer to provide the
> core, why you need the FT number?

Via the devx API userspace can create flow tables directly without
going to the driver's flow steering core.

Jason