linux-kernel - Re: [PATCH net-next 1/4] net: bridge: Add support for bridge port in locked mode

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Message-ID: <20240521122712.3d09b03c@hermes.local>
Date: Tue, 21 May 2024 12:27:12 -0700
From: Stephen Hemminger <stephen@...workplumber.org>
To: Hans Schultz <schultz.hans@...il.com>
Cc: davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org, Hans
 Schultz <schultz.hans+netdev@...il.com>, Roopa Prabhu <roopa@...dia.com>,
 Nikolay Aleksandrov <nikolay@...dia.com>, linux-kernel@...r.kernel.org,
 bridge@...ts.linux-foundation.org
Subject: Re: [PATCH net-next 1/4] net: bridge: Add support for bridge port
 in locked mode

On Mon,  7 Feb 2022 11:07:39 +0100
Hans Schultz <schultz.hans@...il.com> wrote:

> diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
> index 6218f93f5c1a..8fa2648fbc83 100644
> --- a/include/uapi/linux/if_link.h
> +++ b/include/uapi/linux/if_link.h
> @@ -532,6 +532,7 @@ enum {
>  	IFLA_BRPORT_GROUP_FWD_MASK,
>  	IFLA_BRPORT_NEIGH_SUPPRESS,
>  	IFLA_BRPORT_ISOLATED,
> +	IFLA_BRPORT_LOCKED,
>  	IFLA_BRPORT_BACKUP_PORT,
>  	IFLA_BRPORT_MRP_RING_OPEN,
>  	IFLA_BRPORT_MRP_IN_OPEN,

NAK
This is userspace API, adding a new value in enum in the middle
will reorder the numbers and break ABI.