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netfilter: ipset: send nonzero skbinfo extensions only 

Do not send zero valued skbinfo extensions to userspace at listing.

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
This commit is contained in:
Jozsef Kadlecsik 2014-09-15 17:30:54 +02:00
parent 76cea4109c
commit aef96193fe
1 changed files with 11 additions and 7 deletions
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18
include/linux/netfilter/ipset/ip_set.h
View File

@ -335,13 +335,17 @@ ip_set_get_skbinfo(struct ip_set_skbinfo *skbinfo,
static inline bool
ip_set_put_skbinfo(struct sk_buff *skb, struct ip_set_skbinfo *skbinfo)
{
return nla_put_net64(skb, IPSET_ATTR_SKBMARK,
cpu_to_be64((u64)skbinfo->skbmark << 32 |
skbinfo->skbmarkmask)) ||
nla_put_net32(skb, IPSET_ATTR_SKBPRIO,
cpu_to_be32(skbinfo->skbprio)) ||
nla_put_net16(skb, IPSET_ATTR_SKBQUEUE,
cpu_to_be16(skbinfo->skbqueue));
/* Send nonzero parameters only */
return ((skbinfo->skbmark || skbinfo->skbmarkmask) &&
nla_put_net64(skb, IPSET_ATTR_SKBMARK,
cpu_to_be64((u64)skbinfo->skbmark << 32 |
skbinfo->skbmarkmask))) ||
(skbinfo->skbprio &&
nla_put_net32(skb, IPSET_ATTR_SKBPRIO,
cpu_to_be32(skbinfo->skbprio))) ||
(skbinfo->skbqueue &&
nla_put_net16(skb, IPSET_ATTR_SKBQUEUE,
cpu_to_be16(skbinfo->skbqueue)));
}