netdev - Re: [PATCH v5 00/16] Add Paravirtual RDMA Driver

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Message-ID: <20160926210724.GA16413@obsidianresearch.com>
Date:   Mon, 26 Sep 2016 15:07:24 -0600
From:   Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:     Adit Ranadive <aditr@...are.com>
Cc:     Leon Romanovsky <leon@...nel.org>, dledford@...hat.com,
        linux-rdma@...r.kernel.org, pv-drivers@...are.com,
        netdev@...r.kernel.org, linux-pci@...r.kernel.org,
        jhansen@...are.com, asarwade@...are.com, georgezhang@...are.com,
        bryantan@...are.com
Subject: Re: [PATCH v5 00/16] Add Paravirtual RDMA Driver

On Mon, Sep 26, 2016 at 01:40:10PM -0700, Adit Ranadive wrote:

> Wouldnt they be some overlap between the user-space and kernel driver? Or is
> it expected that the common structures (even device specific ones) be moved to
> the ABI file?

Yes, even device specific structures must be in the abi file. Anything
that is used with copy_to_user/copy_from_user/etc.

> For the mlx4 driver I see that the structures in include/linux/mlx4/qp.h
> and in libmlx4/src/wqe.h are similar.

We are trying to clean exactly that sort of stuff up, please try not
to add more.

Jason