netdev - Re: [PATCH net-next] net: Remove VRF change to udp

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Message-Id: <20150908.132855.1931912800434042661.davem@davemloft.net>
Date:	Tue, 08 Sep 2015 13:28:55 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	dsa@...ulusnetworks.com
Cc:	netdev@...r.kernel.org, shm@...ulusnetworks.com,
	tom@...bertland.com
Subject: Re: [PATCH net-next] net: Remove VRF change to udp_sendmsg

From: David Ahern <dsa@...ulusnetworks.com>
Date: Mon, 31 Aug 2015 14:44:46 -0600

> If anything I should be going straight to fib_table_lookup in the VRF
> driver for this new lookup to get the source address. It knows the
> exact table that should be used and hence can avoid the rules walk +
> local table miss which happens using the ip_route_xxxxx functions as
> well as the rth lookup/create which is not needed here.

Definitely if this is the case you should do a direct fib_table_lookup().
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