netdev - Re: [PATCH RESUBMIT3 net-next 2/2] IPv6 routing, NLM_F_* flag support: REPLACE and EXCL flags support, warn about missing CREATE flag

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Date:	Mon, 14 Nov 2011 14:36:10 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	matti.vaittinen@....com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH RESUBMIT3 net-next 2/2] IPv6 routing, NLM_F_* flag
 support: REPLACE and EXCL flags support, warn about missing CREATE flag

From: Matti Vaittinen <matti.vaittinen@....com>
Date: Mon, 14 Nov 2011 12:15:14 +0200

> 
> The support for NLM_F_* flags at IPv6 routing requests.
> 
> If NLM_F_CREATE flag is not defined for RTM_NEWROUTE request,
> warning is printed, but no error is returned. Instead new route is
> added. Later NLM_F_CREATE may be required for
> new route creation.
> 
> Exception is when NLM_F_REPLACE flag is given without NLM_F_CREATE, and
> no matching route is found. In this case it should be safe to assume
> that the request issuer is familiar with NLM_F_* flags, and does really
> not want route to be created.
> 
> Specifying NLM_F_REPLACE flag will now make the kernel to search for
> matching route, and replace it with new one. If no route is found and
> NLM_F_CREATE is specified as well, then new route is created.
> 
> Also, specifying NLM_F_EXCL will yield returning of error if matching
> route is found.
> 
> Patch created against linux-3.2-rc1
>
> Signed-off-by: Matti Vaittinen <Mazziesaccount@...il.com>

Applied.
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