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From: Stephen Hemminger <stephen@networkplumber.org>
To: Peter Heise <mail@pheise.de>
Cc: arvid.brodin@alten.se, davem@davemloft.net,
	hannes@stressinduktion.org, sd@queasysnail.net, henrik@austad.us,
	nikolay@cumulusnetworks.com, tgraf@suug.ch,
	linville@tuxdriver.com, gospo@cumulusnetworks.com,
	dsa@cumulusnetworks.com, eranbe@mellanox.com, ast@plumgrid.com,
	netdev@vger.kernel.org, peter.heise@airbus.com
Subject: Re: [PATCH net-next] net/hsr: Added support for HSR v1
Date: Tue, 19 Apr 2016 08:21:00 -0700	[thread overview]
Message-ID: <20160419082100.237f1b6e@xeon-e3> (raw)
In-Reply-To: <20160413115222.GA42572@aircraft-controller>

On Wed, 13 Apr 2016 13:52:22 +0200
Peter Heise <mail@pheise.de> wrote:

> diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
> index 9427f17..bb3a90b 100644
> --- a/include/uapi/linux/if_link.h
> +++ b/include/uapi/linux/if_link.h
> @@ -773,6 +773,7 @@ enum {
>  	IFLA_HSR_SLAVE1,
>  	IFLA_HSR_SLAVE2,
>  	IFLA_HSR_MULTICAST_SPEC,	/* Last byte of supervision addr */
> +	IFLA_HSR_VERSION,		/* HSR version */
>  	IFLA_HSR_SUPERVISION_ADDR,	/* Supervision frame multicast addr */
>  	IFLA_HSR_SEQ_NR,

You added a new value into the middle of an enumeration field.
This breaks kernel ABI. Older applications (like iproute) would see the wrong
values.

Please submit a new change which moves HSR_VERSION to the end of the enum

  parent reply	other threads:[~2016-04-19 15:20 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-13 11:52 [PATCH net-next] net/hsr: Added support for HSR v1 Peter Heise
2016-04-15 21:08 ` David Miller
2016-04-19 15:21 ` Stephen Hemminger [this message]
2016-04-19 16:12   ` David Miller
     [not found]   ` <8104_1461082351_571658EF_8104_4642_1_20160419.121227.1437003570791513649.davem@davemloft.net>
2016-04-20  7:10     ` AW: " Heise, Peter

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