netdev - Re: [PATCH v2 1/4] ipv4: match prefsrc when deleting routes

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Message-Id: <20110322.010732.52188457.davem@davemloft.net>
Date:	Tue, 22 Mar 2011 01:07:32 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	ja@....bg
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH v2 1/4] ipv4: match prefsrc when deleting routes

From: Julian Anastasov <ja@....bg>
Date: Sun, 20 Mar 2011 00:13:46 +0200

> 	fib_table_delete forgets to match the routes by prefsrc.
> Callers can specify known IP in fc_prefsrc and we should remove
> the exact route. This is needed for cases when same local or
> broadcast addresses are used in different subnets and the
> routes differ only in prefsrc. All callers that do not provide
> fc_prefsrc will ignore the route prefsrc as before and will
> delete the first occurence. That is how the ip route del default
> magic works.
> 
> 	Current callers are:
> 
> - ip_rt_ioctl where rtentry_to_fib_config provides fc_prefsrc only
> when the provided device name matches IP label with colon.
> 
> - inet_rtm_delroute where RTA_PREFSRC is optional too
> 
> - fib_magic which deals with routes when deleting addresses
> and where the fc_prefsrc is always set with the primary IP
> for the concerned IFA.
> 
> Signed-off-by: Julian Anastasov <ja@....bg>

Applied.
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