From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
Subject: Re: [PATCH v2 8/8] ib_uverbs: Support for kernel implementation of
 XRC
Date: Fri, 16 Sep 2016 13:31:03 -0600
Message-ID: <20160916193102.GB28859@obsidianresearch.com>
References: <cover.15d71ac2c57534f1170c2c48374d3841ed75e676.1474049924.git-series.knut.omang@oracle.com>
 <88ffb8c9407a71069b52e155dde308a36dfaf247.1474049924.git-series.knut.omang@oracle.com>
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Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
To: Knut Omang <knut.omang-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Cc: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, Hal Rosenstock <hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>, Sagi Grimberg <sagi-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org>, Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>, Yishai Hadas <yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>, Majd Dibbiny <majd-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>, Eran Ben Elisha <eranbe-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>, Or Gerlitz <ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
List-Id: linux-rdma@vger.kernel.org

On Fri, Sep 16, 2016 at 08:31:19PM +0200, Knut Omang wrote:
> +++ b/include/uapi/rdma/ib_user_verbs.h
> @@ -725,6 +725,8 @@ struct ib_uverbs_send_wr {
>  			__u32 reserved;
>  		} ud;
>  	} wr;
> +	__u32 xrc_remote_srq_num;
> +	__u32 reserved;
>  };

You still need to discuss why this is OK...

Are you doing all this just to be able to use the existing post_send user
space path in the common code? Is there a kernel XRC user planned?

Another approach would be to implement post_send in your driver and
not rely on this common code path.

Jason
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