[NETFILTER]: Move ip6_masked_addrcmp to include/net/ipv6.h
Replace netfilter's ip6_masked_addrcmp by a more efficient version
in include/net/ipv6.h to make it usable without module dependencies.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index b75f8fd..d74ec33 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -94,19 +94,6 @@
#define up(x) do { printk("UP:%u:" #x "\n", __LINE__); up(x); } while(0)
#endif
-int
-ip6_masked_addrcmp(const struct in6_addr *addr1, const struct in6_addr *mask,
- const struct in6_addr *addr2)
-{
- int i;
- for( i = 0; i < 16; i++){
- if((addr1->s6_addr[i] & mask->s6_addr[i]) !=
- (addr2->s6_addr[i] & mask->s6_addr[i]))
- return 1;
- }
- return 0;
-}
-
/* Check for an extension */
int
ip6t_ext_hdr(u8 nexthdr)
@@ -135,10 +122,10 @@
#define FWINV(bool,invflg) ((bool) ^ !!(ip6info->invflags & invflg))
- if (FWINV(ip6_masked_addrcmp(&ipv6->saddr, &ip6info->smsk,
- &ip6info->src), IP6T_INV_SRCIP)
- || FWINV(ip6_masked_addrcmp(&ipv6->daddr, &ip6info->dmsk,
- &ip6info->dst), IP6T_INV_DSTIP)) {
+ if (FWINV(ipv6_masked_addr_cmp(&ipv6->saddr, &ip6info->smsk,
+ &ip6info->src), IP6T_INV_SRCIP)
+ || FWINV(ipv6_masked_addr_cmp(&ipv6->daddr, &ip6info->dmsk,
+ &ip6info->dst), IP6T_INV_DSTIP)) {
dprintf("Source or dest mismatch.\n");
/*
dprintf("SRC: %u. Mask: %u. Target: %u.%s\n", ip->saddr,
@@ -1526,7 +1513,6 @@
EXPORT_SYMBOL(ip6t_do_table);
EXPORT_SYMBOL(ip6t_ext_hdr);
EXPORT_SYMBOL(ipv6_find_hdr);
-EXPORT_SYMBOL(ip6_masked_addrcmp);
module_init(init);
module_exit(fini);