Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

3 files changed, 40 insertions, 56 deletions

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 24a1cf110d80..fd6782e3a038 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2661,14 +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)
@@ -2689,6 +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 */
@@ -2722,52 +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);
 
@@ -4156,8 +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;
         }
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 373bd0416f69..1534508f6c68 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -72,8 +72,6 @@
 #define RT6_TRACE(x...) do { ; } while (0)
 #endif
 
-#define CLONE_OFFLINK_ROUTE 0
-
 static struct rt6_info * ip6_rt_copy(struct rt6_info *ort);
 static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie);
 static unsigned int      ip6_default_advmss(const struct dst_entry *dst);
@@ -738,13 +736,8 @@ restart:
 
         if (!rt->rt6i_nexthop && !(rt->rt6i_flags & RTF_NONEXTHOP))
                 nrt = rt6_alloc_cow(rt, &fl->fl6_dst, &fl->fl6_src);
-        else {
-#if CLONE_OFFLINK_ROUTE
+        else
                 nrt = rt6_alloc_clone(rt, &fl->fl6_dst);
-#else
-                goto out2;
-#endif
-        }
 
         dst_release(&rt->dst);
         rt = nrt ? : net->ipv6.ip6_null_entry;
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 7e74023ea6e4..da87428681cc 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -98,6 +98,10 @@ static int xfrm6_fill_dst(struct xfrm_dst *xdst, struct net_device *dev,
         if (!xdst->u.rt6.rt6i_idev)
                 return -ENODEV;
 
+        xdst->u.rt6.rt6i_peer = rt->rt6i_peer;
+        if (rt->rt6i_peer)
+                atomic_inc(&rt->rt6i_peer->refcnt);
+
         /* Sheit... I remember I did this right. Apparently,
          * it was magically lost, so this code needs audit */
         xdst->u.rt6.rt6i_flags = rt->rt6i_flags & (RTF_ANYCAST |
@@ -216,6 +220,8 @@ static void xfrm6_dst_destroy(struct dst_entry *dst)
 
         if (likely(xdst->u.rt6.rt6i_idev))
                 in6_dev_put(xdst->u.rt6.rt6i_idev);
+        if (likely(xdst->u.rt6.rt6i_peer))
+                inet_putpeer(xdst->u.rt6.rt6i_peer);
         xfrm_dst_destroy(xdst);
 }