ipv6: unneccessary to get address prefix in addrconf_get_prefix_route

Since addrconf_get_prefix_route inputs the address prefix to fib6_locate,
which does not uses the data which is out of the prefix_len length,
so do not need to use ipv6_addr_prefix to get address prefix.

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 4 deletions

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index cd2d7d0fb558..9418ca375132 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -995,12 +995,9 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp)
          * --yoshfuji
          */
         if ((ifp->flags & IFA_F_PERMANENT) && onlink < 1) {
-                struct in6_addr prefix;
                 struct rt6_info *rt;
 
-                ipv6_addr_prefix(&prefix, &ifp->addr, ifp->prefix_len);
-
-                rt = addrconf_get_prefix_route(&prefix,
+                rt = addrconf_get_prefix_route(&ifp->addr,
                                                ifp->prefix_len,
                                                ifp->idev->dev,
                                                0, RTF_GATEWAY | RTF_DEFAULT);