ipv6: Revert 'administrative down' address handling changes.

[pandora-kernel.git] / net / ipv6 / addrconf.c

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 5b189c9..fd6782e 100644 (file)
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -420,9 +420,6 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
            dev->type == ARPHRD_TUNNEL6 ||
            dev->type == ARPHRD_SIT ||
            dev->type == ARPHRD_NONE) {
-               printk(KERN_INFO
-                      "%s: Disabled Privacy Extensions\n",
-                      dev->name);
                ndev->cnf.use_tempaddr = -1;
        } else {
                in6_dev_hold(ndev);
@@ -2664,14 +2661,12 @@ static int addrconf_ifdown(struct net_device *dev, int how)
        struct net *net = dev_net(dev);
        struct inet6_dev *idev;
        struct inet6_ifaddr *ifa;
-       LIST_HEAD(keep_list);
-       int state;
+       int state, i;
 
        ASSERT_RTNL();
 
-       /* Flush routes if device is being removed or it is not loopback */
-       if (how || !(dev->flags & IFF_LOOPBACK))
-               rt6_ifdown(net, dev);
+       rt6_ifdown(net, dev);
+       neigh_ifdown(&nd_tbl, dev);
 
        idev = __in6_dev_get(dev);
        if (idev == NULL)
@@ -2692,6 +2687,23 @@ static int addrconf_ifdown(struct net_device *dev, int how)
 
        }
 
+       /* Step 2: clear hash table */
+       for (i = 0; i < IN6_ADDR_HSIZE; i++) {
+               struct hlist_head *h = &inet6_addr_lst[i];
+               struct hlist_node *n;
+
+               spin_lock_bh(&addrconf_hash_lock);
+       restart:
+               hlist_for_each_entry_rcu(ifa, n, h, addr_lst) {
+                       if (ifa->idev == idev) {
+                               hlist_del_init_rcu(&ifa->addr_lst);
+                               addrconf_del_timer(ifa);
+                               goto restart;
+                       }
+               }
+               spin_unlock_bh(&addrconf_hash_lock);
+       }
+
        write_lock_bh(&idev->lock);
 
        /* Step 2: clear flags for stateless addrconf */
@@ -2725,52 +2737,23 @@ static int addrconf_ifdown(struct net_device *dev, int how)
                                       struct inet6_ifaddr, if_list);
                addrconf_del_timer(ifa);
 
-               /* If just doing link down, and address is permanent
-                  and not link-local, then retain it. */
-               if (!how &&
-                   (ifa->flags&IFA_F_PERMANENT) &&
-                   !(ipv6_addr_type(&ifa->addr) & IPV6_ADDR_LINKLOCAL)) {
-                       list_move_tail(&ifa->if_list, &keep_list);
-
-                       /* If not doing DAD on this address, just keep it. */
-                       if ((dev->flags&(IFF_NOARP|IFF_LOOPBACK)) ||
-                           idev->cnf.accept_dad <= 0 ||
-                           (ifa->flags & IFA_F_NODAD))
-                               continue;
+               list_del(&ifa->if_list);
 
-                       /* If it was tentative already, no need to notify */
-                       if (ifa->flags & IFA_F_TENTATIVE)
-                               continue;
+               write_unlock_bh(&idev->lock);
 
-                       /* Flag it for later restoration when link comes up */
-                       ifa->flags |= IFA_F_TENTATIVE;
-                       ifa->state = INET6_IFADDR_STATE_DAD;
-               } else {
-                       list_del(&ifa->if_list);
-
-                       /* clear hash table */
-                       spin_lock_bh(&addrconf_hash_lock);
-                       hlist_del_init_rcu(&ifa->addr_lst);
-                       spin_unlock_bh(&addrconf_hash_lock);
-
-                       write_unlock_bh(&idev->lock);
-                       spin_lock_bh(&ifa->state_lock);
-                       state = ifa->state;
-                       ifa->state = INET6_IFADDR_STATE_DEAD;
-                       spin_unlock_bh(&ifa->state_lock);
-
-                       if (state != INET6_IFADDR_STATE_DEAD) {
-                               __ipv6_ifa_notify(RTM_DELADDR, ifa);
-                               atomic_notifier_call_chain(&inet6addr_chain,
-                                                          NETDEV_DOWN, ifa);
-                       }
+               spin_lock_bh(&ifa->state_lock);
+               state = ifa->state;
+               ifa->state = INET6_IFADDR_STATE_DEAD;
+               spin_unlock_bh(&ifa->state_lock);
 
-                       in6_ifa_put(ifa);
-                       write_lock_bh(&idev->lock);
+               if (state != INET6_IFADDR_STATE_DEAD) {
+                       __ipv6_ifa_notify(RTM_DELADDR, ifa);
+                       atomic_notifier_call_chain(&inet6addr_chain, NETDEV_DOWN, ifa);
                }
-       }
+               in6_ifa_put(ifa);
 
-       list_splice(&keep_list, &idev->addr_list);
+               write_lock_bh(&idev->lock);
+       }
 
        write_unlock_bh(&idev->lock);
 
@@ -4159,8 +4142,7 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
                addrconf_leave_solict(ifp->idev, &ifp->addr);
                dst_hold(&ifp->rt->dst);
 
-               if (ifp->state == INET6_IFADDR_STATE_DEAD &&
-                   ip6_del_rt(ifp->rt))
+               if (ip6_del_rt(ifp->rt))
                        dst_free(&ifp->rt->dst);
                break;
        }