netdev - Re: [PATCH net v2] net: Flush local routes when device changes vrf association

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Date:	Sun, 13 Dec 2015 23:59:48 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	dsa@...ulusnetworks.com
Cc:	netdev@...r.kernel.org, ja@....bg
Subject: Re: [PATCH net v2] net: Flush local routes when device changes vrf
 association

From: David Ahern <dsa@...ulusnetworks.com>
Date: Thu, 10 Dec 2015 10:25:24 -0800

> The VRF driver cycles netdevs when an interface is enslaved or released:
> the down event is used to flush neighbor and route tables and the up
> event (if the interface was already up) effectively moves local and
> connected routes to the proper table.
> 
> As of 4f823defdd5b the local route is left hanging around after a link
> down, so when a netdev is moved from one VRF to another (or released
> from a VRF altogether) local routes are left in the wrong table.
> 
> Fix by handling the NETDEV_CHANGEUPPER event. When the upper dev is
> an L3mdev then call fib_disable_ip to flush all routes, local ones
> to.
> 
> Fixes: 4f823defdd5b ("ipv4: fix to not remove local route on link down")
> Cc: Julian Anastasov <ja@....bg>
> Signed-off-by: David Ahern <dsa@...ulusnetworks.com>

Applied, thanks.
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