Re: [PATCH v4 2/2] ip6_tunnel: fix ip6 tunnel lookup in collect_md mode

[David Miller]

From: Haishuang Yan <yanhaishuang@xxxxxxxxxxxxxxxxxxxx>
Date: Tue, 12 Sep 2017 17:47:57 +0800

> In collect_md mode, if the tun dev is down, it still can call
> __ip6_tnl_rcv to receive on packets, and the rx statistics increase
> improperly.
> 
> When the md tunnel is down, it's not neccessary to increase RX drops
> for the tunnel device, packets would be recieved on fallback tunnel,
> and the RX drops on fallback device will be increased as expected.
> 
> Fixes: 8d79266bc48c ("ip6_tunnel: add collect_md mode to IPv6 tunnels")
> Cc: Alexei Starovoitov <ast@xxxxxx>
> Signed-off-by: Haishuang Yan <yanhaishuang@xxxxxxxxxxxxxxxxxxxx>

Applied.