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STALE3871d REVIEWED: 1 (0M)

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[PATCH 2/6] netfilter: ipset: allow a 0 netmask with hash_netiface type

From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: 2016-01-20 17:04:25
Also in: netfilter-devel
Subsystem: netfilter, networking [general], the rest · Maintainers: Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds 

From: Florian Westphal <fw@strlen.de>

Jozsef says:
 The correct behaviour is that if we have
 ipset create test1 hash:net,iface
 ipset add test1 0.0.0.0/0,eth0
 iptables -A INPUT -m set --match-set test1 src,src

 then the rule should match for any traffic coming in through eth0.

This removes the -EINVAL runtime test to make matching work
in case packet arrived via the specified interface.

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1297092
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Jozsef Kadlecsik <redacted>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 net/netfilter/ipset/ip_set_hash_netiface.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/net/netfilter/ipset/ip_set_hash_netiface.c b/net/netfilter/ipset/ip_set_hash_netiface.c
index 43d8c98..f0f688d 100644
--- a/net/netfilter/ipset/ip_set_hash_netiface.c
+++ b/net/netfilter/ipset/ip_set_hash_netiface.c
@@ -164,8 +164,6 @@ hash_netiface4_kadt(struct ip_set *set, const struct sk_buff *skb,
 	};
 	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
 
-	if (e.cidr == 0)
-		return -EINVAL;
 	if (adt == IPSET_TEST)
 		e.cidr = HOST_MASK;
 
@@ -377,8 +375,6 @@ hash_netiface6_kadt(struct ip_set *set, const struct sk_buff *skb,
 	};
 	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
 
-	if (e.cidr == 0)
-		return -EINVAL;
 	if (adt == IPSET_TEST)
 		e.cidr = HOST_MASK;
 
-- 
2.1.4
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