[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, 24 deletions

diff --git a/net/ipv6/anycast.c b/net/ipv6/anycast.c
index 463bd95d6b13..36e817492095 100644
--- a/net/ipv6/anycast.c
+++ b/net/ipv6/anycast.c
@@ -48,29 +48,6 @@ static int ipv6_dev_ac_dec(struct net_device *dev, struct in6_addr *addr);
 /* Big ac list lock for all the sockets */
 static DEFINE_RWLOCK(ipv6_sk_ac_lock);
 
-static int
-ip6_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;
-}
 
 /*
  *      socket join an anycast group
@@ -142,7 +119,7 @@ int ipv6_sock_ac_join(struct sock *sk, int ifindex, struct in6_addr *addr)
          * This obviates the need for propagating anycast routes while
          * still allowing some non-router anycast participation.
          */
-        if (!ip6_onlink(addr, dev)) {
+        if (!ipv6_chk_prefix(addr, dev)) {
                 if (ishost)
                         err = -EADDRNOTAVAIL;
                 if (err)