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netfilter: nf_nat_core: merge the same lines

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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>
This commit is contained in:
Changli Gao 2010-07-23 13:27:08 +02:00 committed by Patrick McHardy
parent e8648a1fdb
commit c36952e524
1 changed files with 2 additions and 7 deletions
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9
net/ipv4/netfilter/nf_nat_core.c
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@ -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;