netdev - Re: [PATCH net-next] rename RTNH_F_EXTERNAL to RTNH_F

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Date:	Wed, 13 May 2015 12:13:17 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	roopa@...ulusnetworks.com
Cc:	daniel@...earbox.net, jiri@...nulli.us, sfeldma@...il.com,
	gospo@...ulusnetworks.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next] rename RTNH_F_EXTERNAL to RTNH_F_OFFLOAD

From: roopa <roopa@...ulusnetworks.com>
Date: Wed, 13 May 2015 06:38:02 -0700

> On 5/13/15, 1:26 AM, Daniel Borkmann wrote:
>> On 05/13/2015 07:42 AM, Jiri Pirko wrote:
>>> Wed, May 13, 2015 at 07:27:10AM CEST, roopa@...ulusnetworks.com wrote:
>>>> From: Roopa Prabhu <roopa@...ulusnetworks.com>
>>>>
>>>> RTNH_F_EXTERNAL today is printed as "offload" in iproute2 output.
>>>>
>>>> This patch renames the flag to be consistent with what the user sees.
>>>>
>>>> (I will post iproute2 patch if this gets accepted)
>>>>
>>>> Signed-off-by: Roopa Prabhu <roopa@...ulusnetworks.com>
>>>> ---
>>>> include/uapi/linux/rtnetlink.h |    2 +-
>>>> net/ipv4/fib_trie.c            |    2 +-
>>>> net/switchdev/switchdev.c      |    6 +++---
>>>> 3 files changed, 5 insertions(+), 5 deletions(-)
>>>>
>>>> diff --git a/include/uapi/linux/rtnetlink.h
>>>> b/include/uapi/linux/rtnetlink.h
>>>> index 974db03..17fb02f 100644
>>>> --- a/include/uapi/linux/rtnetlink.h
>>>> +++ b/include/uapi/linux/rtnetlink.h
>>>> @@ -337,7 +337,7 @@ struct rtnexthop {
>>>> #define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */
>>>> #define RTNH_F_PERVASIVE    2    /* Do recursive gateway lookup    */
>>>> #define RTNH_F_ONLINK        4    /* Gateway is forced on link    */
>>>> -#define RTNH_F_EXTERNAL        8    /* Route installed externally    */
>>>> +#define RTNH_F_OFFLOAD        8    /* offloaded route */
>>>
>>> Since this is part of uapi, I believe this is not doable :/
> i thought it was not too late :) and besides i wasn't changing the
> value and just the name.
> current iproute2 would still build for example.

If it made it into a release kernel, you cannot change it.

Period.
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