Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[~andy/linux] / net / ipv6 / addrconf.c

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 6c1634507ec2f07dc91d548ceb5d228cf49a333d..31f75ea9cb602fe1ac57bd1cce337139f7a763b9 100644 (file)
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1677,7 +1677,7 @@ void addrconf_leave_solict(struct inet6_dev *idev, const struct in6_addr *addr)
 static void addrconf_join_anycast(struct inet6_ifaddr *ifp)
 {
        struct in6_addr addr;
-       if (ifp->prefix_len == 127) /* RFC 6164 */
+       if (ifp->prefix_len >= 127) /* RFC 6164 */
                return;
        ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len);
        if (ipv6_addr_any(&addr))
@@ -1688,7 +1688,7 @@ static void addrconf_join_anycast(struct inet6_ifaddr *ifp)
 static void addrconf_leave_anycast(struct inet6_ifaddr *ifp)
 {
        struct in6_addr addr;
-       if (ifp->prefix_len == 127) /* RFC 6164 */
+       if (ifp->prefix_len >= 127) /* RFC 6164 */
                return;
        ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len);
        if (ipv6_addr_any(&addr))
@@ -3476,7 +3476,12 @@ restart:
                                         &inet6_addr_lst[i], addr_lst) {
                        unsigned long age;
 
-                       if (ifp->flags & IFA_F_PERMANENT)
+                       /* When setting preferred_lft to a value not zero or
+                        * infinity, while valid_lft is infinity
+                        * IFA_F_PERMANENT has a non-infinity life time.
+                        */
+                       if ((ifp->flags & IFA_F_PERMANENT) &&
+                           (ifp->prefered_lft == INFINITY_LIFE_TIME))
                                continue;
 
                        spin_lock(&ifp->lock);
@@ -3501,7 +3506,8 @@ restart:
                                        ifp->flags |= IFA_F_DEPRECATED;
                                }
 
-                               if (time_before(ifp->tstamp + ifp->valid_lft * HZ, next))
+                               if ((ifp->valid_lft != INFINITY_LIFE_TIME) &&
+                                   (time_before(ifp->tstamp + ifp->valid_lft * HZ, next)))
                                        next = ifp->tstamp + ifp->valid_lft * HZ;
 
                                spin_unlock(&ifp->lock);
@@ -3801,7 +3807,8 @@ static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
        put_ifaddrmsg(nlh, ifa->prefix_len, ifa->flags, rt_scope(ifa->scope),
                      ifa->idev->dev->ifindex);
 
-       if (!(ifa->flags&IFA_F_PERMANENT)) {
+       if (!((ifa->flags&IFA_F_PERMANENT) &&
+             (ifa->prefered_lft == INFINITY_LIFE_TIME))) {
                preferred = ifa->prefered_lft;
                valid = ifa->valid_lft;
                if (preferred != INFINITY_LIFE_TIME) {