Re: [PATCH v2 8/8] ib_uverbs: Support for kernel implementation of XRC

From	Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v2 8/8] ib_uverbs: Support for kernel implementation of XRC
Date	2016-09-16 22:10 +0200
Message-ID	<si7sJ-Kc-11@gated-at.bofh.it> (permalink)
References	<si6dj-8sO-5@gated-at.bofh.it> <si6dj-8sO-3@gated-at.bofh.it>
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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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[PATCH v2 8/8] ib_uverbs: Support for kernel implementation of XRC Knut Omang <knut.omang@oracle.com> - 2016-09-16 20:40 +0200
  Re: [PATCH v2 8/8] ib_uverbs: Support for kernel implementation of  XRC Knut Omang <knut.omang@oracle.com> - 2016-09-16 22:00 +0200
  Re: [PATCH v2 8/8] ib_uverbs: Support for kernel implementation of  XRC Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2016-09-16 22:10 +0200

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