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netfilter: ipset: allow a 0 netmask with hash_netiface type

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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 <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal 2016-01-12 17:07:05 +01:00 committed by Pablo Neira Ayuso
parent 4b8c4eddfc
commit f90d2d37fb
1 changed files with 0 additions and 4 deletions
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4
net/netfilter/ipset/ip_set_hash_netiface.c
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@ -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;