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Diffstat (limited to 'net/netfilter/ipset/ip_set_hash_gen.h')
-rw-r--r--net/netfilter/ipset/ip_set_hash_gen.h28
1 files changed, 16 insertions, 12 deletions
diff --git a/net/netfilter/ipset/ip_set_hash_gen.h b/net/netfilter/ipset/ip_set_hash_gen.h
index 57beb1762b2..707bc520d62 100644
--- a/net/netfilter/ipset/ip_set_hash_gen.h
+++ b/net/netfilter/ipset/ip_set_hash_gen.h
@@ -325,18 +325,22 @@ mtype_add_cidr(struct htype *h, u8 cidr, u8 nets_length)
static void
mtype_del_cidr(struct htype *h, u8 cidr, u8 nets_length)
{
- u8 i, j;
-
- for (i = 0; i < nets_length - 1 && h->nets[i].cidr != cidr; i++)
- ;
- h->nets[i].nets--;
-
- if (h->nets[i].nets != 0)
- return;
-
- for (j = i; j < nets_length - 1 && h->nets[j].nets; j++) {
- h->nets[j].cidr = h->nets[j + 1].cidr;
- h->nets[j].nets = h->nets[j + 1].nets;
+ u8 i, j, net_end = nets_length - 1;
+
+ for (i = 0; i < nets_length; i++) {
+ if (h->nets[i].cidr != cidr)
+ continue;
+ if (h->nets[i].nets > 1 || i == net_end ||
+ h->nets[i + 1].nets == 0) {
+ h->nets[i].nets--;
+ return;
+ }
+ for (j = i; j < net_end && h->nets[j].nets; j++) {
+ h->nets[j].cidr = h->nets[j + 1].cidr;
+ h->nets[j].nets = h->nets[j + 1].nets;
+ }
+ h->nets[j].nets = 0;
+ return;
}
}
#endif