From 51dc63e3911fbb1f0a7a32da2fe56253e2040ea4 Mon Sep 17 00:00:00 2001
From: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Date: Mon, 10 Sep 2018 22:19:48 +0800
Subject: [PATCH] erspan: fix error handling for erspan tunnel
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 <u9012063@gmail.com>
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/ipv4/ip_gre.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 85a714d36b66..8cce0e9ea08c 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -178,6 +178,9 @@ static void ipgre_err(struct sk_buff *skb, u32 info,
if (tpi->proto == htons(ETH_P_TEB))
itn = net_generic(net, gre_tap_net_id);
+ else if (tpi->proto == htons(ETH_P_ERSPAN) ||
+ tpi->proto == htons(ETH_P_ERSPAN2))
+ itn = net_generic(net, erspan_net_id);
else
itn = net_generic(net, ipgre_net_id);