4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Haishuang Yan <[email protected]>

[ Upstream commit 51dc63e3911fbb1f0a7a32da2fe56253e2040ea4 ]

When processing icmp unreachable message for erspan tunnel, tunnel id
should be erspan_net_id instead of ipgre_net_id.

Fixes: 84e54fe0a5ea ("gre: introduce native tunnel support for ERSPAN")
Cc: William Tu <[email protected]>
Signed-off-by: Haishuang Yan <[email protected]>
Acked-by: William Tu <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 net/ipv4/ip_gre.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -177,6 +177,8 @@ static void ipgre_err(struct sk_buff *sk
 
        if (tpi->proto == htons(ETH_P_TEB))
                itn = net_generic(net, gre_tap_net_id);
+       else if (tpi->proto == htons(ETH_P_ERSPAN))
+               itn = net_generic(net, erspan_net_id);
        else
                itn = net_generic(net, ipgre_net_id);
 


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