[IPV6]: Unify ip6_onlink() and ipip6_onlink().

Both are identical, let's create ipv6_chk_prefix() and use it
in both places.

1 files changed, 1 insertions, 26 deletions

diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 08a483a8de50..cc16fe07bbff 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -344,31 +344,6 @@ out:
 	return 0;
 }
 
-/* copied directly from anycast.c */
-static int
-ipip6_onlink(struct in6_addr *addr, struct net_device *dev)
-{
-	struct inet6_dev	*idev;
-	struct inet6_ifaddr	*ifa;
-	int	onlink;
-
-	onlink = 0;
-	rcu_read_lock();
-	idev = __in6_dev_get(dev);
-	if (idev) {
-		read_lock_bh(&idev->lock);
-		for (ifa=idev->addr_list; ifa; ifa=ifa->if_next) {
-			onlink = ipv6_prefix_equal(addr, &ifa->addr,
-						   ifa->prefix_len);
-			if (onlink)
-				break;
-		}
-		read_unlock_bh(&idev->lock);
-	}
-	rcu_read_unlock();
-	return onlink;
-}
-
 static int
 isatap_chksrc(struct sk_buff *skb, struct iphdr *iph, struct ip_tunnel *t)
 {
@@ -386,7 +361,7 @@ isatap_chksrc(struct sk_buff *skb, struct iphdr *iph, struct ip_tunnel *t)
 		struct in6_addr *addr6 = &ipv6_hdr(skb)->saddr;
 		if (ipv6_addr_is_isatap(addr6) &&
 		    (addr6->s6_addr32[3] == iph->saddr) &&
-		    ipip6_onlink(addr6, t->dev))
+		    ipv6_chk_prefix(addr6, t->dev))
 			skb->ndisc_nodetype = NDISC_NODETYPE_HOST;
 		else
 			ok = 0;