netdev - Re: [PATCH rdma-next 13/19] RDMA/netlink: Add netlink device definitions to UAPI

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Message-ID: <20170621161149.GB10200@obsidianresearch.com>
Date:   Wed, 21 Jun 2017 10:11:49 -0600
From:   Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     Doug Ledford <dledford@...hat.com>, linux-rdma@...r.kernel.org,
        Chien Tin Tung <chien.tin.tung@...el.com>,
        Steve Wise <swise@...ngridcomputing.com>,
        Stephen Hemminger <stephen@...workplumber.org>,
        Jiri Pirko <jiri@...lanox.com>,
        Ariel Almog <ariela@...lanox.com>,
        Linux Netdev <netdev@...r.kernel.org>,
        Leon Romanovsky <leonro@...lanox.com>
Subject: Re: [PATCH rdma-next 13/19] RDMA/netlink: Add netlink device
 definitions to UAPI

On Wed, Jun 21, 2017 at 09:05:22AM +0300, Leon Romanovsky wrote:
>  	RDMA_NL_IWCM,
>  	RDMA_NL_RSVD,
>  	RDMA_NL_LS,	/* RDMA Local Services */
> +	/*
> +	 * RDMA_NL_I40IW not in use and it was added here by mistake,
> +	 * but we need to keep it anyway, because it is UAPI and for
> +	 * unknown reasons, someone in the field decided to replace "5"
> +	 * with this define.
> +	 */
>  	RDMA_NL_I40IW,

Since this doesn't do anything, never did anything, I think you should
just delete it. Anything in userspace that refers to this name is
unconditionally broken and a compile failure is the better choice.

Jason