netdev - Re: [PATCH v2 net-next 1/5] GRE: Refactor GRE tunneling code.

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Message-ID: <87r4jb1y0t.fsf@nemi.mork.no>
Date:	Tue, 19 Mar 2013 11:31:30 +0100
From:	Bjørn Mork <bjorn@...k.no>
To:	David Miller <davem@...emloft.net>
Cc:	stephen@...workplumber.org, pshelar@...ira.com,
	netdev@...r.kernel.org, jesse@...ira.com
Subject: Re: [PATCH v2 net-next 1/5] GRE: Refactor GRE tunneling code.

David Miller <davem@...emloft.net> writes:
> From: Stephen Hemminger <stephen@...workplumber.org>
>> On Mon, 18 Mar 2013 11:13:25 -0700
>> Pravin B Shelar <pshelar@...ira.com> wrote:
>> 
>>> diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
>>> index 7944df7..2073226 100644
>>> --- a/net/ipv4/Kconfig
>>> +++ b/net/ipv4/Kconfig
>>> @@ -186,9 +186,14 @@ config NET_IPGRE_DEMUX
>>>  	 This is helper module to demultiplex GRE packets on GRE version field criteria.
>>>  	 Required by ip_gre and pptp modules.
>>>  
>>> +config NET_IP_TUNNEL
>>> +	tristate
>>> +	default n
>>> +
>> 
>> Won't this break existing kernel config's, shouldn't this default y?
>
> Or "m".  But indeed, it should be made to automatically work for
> existing configs.

Won't the "select NET_IP_TUNNEL" statements do just that?

Changing the default to m will enable this module even if all of
NET_IPGRE, VXLAN and NET_IPIP are disabled. That's pointless, isn't it?



Bjørn
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