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ipvs: do not schedule icmp errors from tunnels

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[ Upstream commit 0261ea1bd1 ]

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: 6044eeffaf ("ipvs: attempt to schedule icmp packets")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Julian Anastasov
2019-03-31 13:24:52 +03:00
committed by Greg Kroah-Hartman
parent cb9a11d017
commit 4e1994ef63
1 changed files with 1 additions and 1 deletions
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2
net/netfilter/ipvs/ip_vs_core.c
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@@ -1647,7 +1647,7 @@ 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))