[PATCH net] ipvs: do not schedule icmp errors from tunnels

[Julian Anastasov <ja@xxxxxx>]

We can receive ICMP errors from client or from
tunneling real server. While the former can be
scheduled to real server, the latter should
not be scheduled, they are decapsulated only when
existing connection is found.

Fixes: 6044eeffafbe ("ipvs: attempt to schedule icmp packets")
Signed-off-by: Julian Anastasov <ja@xxxxxx>
---
 net/netfilter/ipvs/ip_vs_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 43bbaa32b1d6..14457551bcb4 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -1678,7 +1678,7 @@ ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff 
*skb, int *related,
        if (!cp) {
                int v;
 
-               if (!sysctl_schedule_icmp(ipvs))
+               if (ipip || !sysctl_schedule_icmp(ipvs))
                        return NF_ACCEPT;
 
                if (!ip_vs_try_to_schedule(ipvs, AF_INET, skb, pd, &v, &cp, 
&ciph))
-- 
2.17.1