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authorChangli Gao <xiaosuo@gmail.com>2010-07-23 15:27:08 +0400
committerPatrick McHardy <kaber@trash.net>2010-07-23 15:27:08 +0400
commitc36952e524b2b898a3c9e9b137f64d72d43cd393 (patch)
tree6fdc6d67bd40c0cff79e49e8a3e6423354503180 /net/ipv4
parente8648a1fdb54da1f683784b36a17aa65ea56e931 (diff)
downloadlinux-c36952e524b2b898a3c9e9b137f64d72d43cd393.tar.xz
netfilter: nf_nat_core: merge the same lines
proto->unique_tuple() will be called finally, if the previous calls fail. This patch checks the false condition of (range->flags &IP_NAT_RANGE_PROTO_RANDOM) instead to avoid duplicate line of code: proto->unique_tuple(). Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/netfilter/nf_nat_core.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/net/ipv4/netfilter/nf_nat_core.c b/net/ipv4/netfilter/nf_nat_core.c
index c7719b283ada..037a3a659930 100644
--- a/net/ipv4/netfilter/nf_nat_core.c
+++ b/net/ipv4/netfilter/nf_nat_core.c
@@ -261,14 +261,9 @@ get_unique_tuple(struct nf_conntrack_tuple *tuple,
rcu_read_lock();
proto = __nf_nat_proto_find(orig_tuple->dst.protonum);
- /* Change protocol info to have some randomization */
- if (range->flags & IP_NAT_RANGE_PROTO_RANDOM) {
- proto->unique_tuple(tuple, range, maniptype, ct);
- goto out;
- }
-
/* Only bother mapping if it's not already in range and unique */
- if ((!(range->flags & IP_NAT_RANGE_PROTO_SPECIFIED) ||
+ if (!(range->flags & IP_NAT_RANGE_PROTO_RANDOM) &&
+ (!(range->flags & IP_NAT_RANGE_PROTO_SPECIFIED) ||
proto->in_range(tuple, maniptype, &range->min, &range->max)) &&
!nf_nat_used_tuple(tuple, ct))
goto out;