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

[net-next-2.6.git] / include / net / addrconf.h

diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index 45375b41a2a0d44e62a370813ab4fdcbe046e3b3..958d2749b7a999bae6ea33b9a0cabc44b9042e94 100644 (file)
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -121,6 +121,7 @@ static inline int addrconf_finite_timeout(unsigned long timeout)
  *     IPv6 Address Label subsystem (addrlabel.c)
  */
 extern int                     ipv6_addr_label_init(void);
+extern void                    ipv6_addr_label_cleanup(void);
 extern void                    ipv6_addr_label_rtnl_register(void);
 extern u32                     ipv6_addr_label(struct net *net,
                                                const struct in6_addr *addr,
@@ -174,20 +175,32 @@ extern int ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
 extern int register_inet6addr_notifier(struct notifier_block *nb);
 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
 
-static inline struct inet6_dev *
-__in6_dev_get(struct net_device *dev)
+/**
+ * __in6_dev_get - get inet6_dev pointer from netdevice
+ * @dev: network device
+ *
+ * Caller must hold rcu_read_lock or RTNL, because this function
+ * does not take a reference on the inet6_dev.
+ */
+static inline struct inet6_dev *__in6_dev_get(const struct net_device *dev)
 {
-       return rcu_dereference_check(dev->ip6_ptr,
-                                    rcu_read_lock_held() ||
-                                    lockdep_rtnl_is_held());
+       return rcu_dereference_rtnl(dev->ip6_ptr);
 }
 
-static inline struct inet6_dev *
-in6_dev_get(struct net_device *dev)
+/**
+ * in6_dev_get - get inet6_dev pointer from netdevice
+ * @dev: network device
+ *
+ * This version can be used in any context, and takes a reference
+ * on the inet6_dev. Callers must use in6_dev_put() later to
+ * release this reference.
+ */
+static inline struct inet6_dev *in6_dev_get(const struct net_device *dev)
 {
-       struct inet6_dev *idev = NULL;
+       struct inet6_dev *idev;
+
        rcu_read_lock();
-       idev = __in6_dev_get(dev);
+       idev = rcu_dereference(dev->ip6_ptr);
        if (idev)
                atomic_inc(&idev->refcnt);
        rcu_read_unlock();
@@ -196,16 +209,21 @@ in6_dev_get(struct net_device *dev)
 
 extern void in6_dev_finish_destroy(struct inet6_dev *idev);
 
-static inline void
-in6_dev_put(struct inet6_dev *idev)
+static inline void in6_dev_put(struct inet6_dev *idev)
 {
        if (atomic_dec_and_test(&idev->refcnt))
                in6_dev_finish_destroy(idev);
 }
 
-#define __in6_dev_put(idev)  atomic_dec(&(idev)->refcnt)
-#define in6_dev_hold(idev)   atomic_inc(&(idev)->refcnt)
+static inline void __in6_dev_put(struct inet6_dev *idev)
+{
+       atomic_dec(&idev->refcnt);
+}
 
+static inline void in6_dev_hold(struct inet6_dev *idev)
+{
+       atomic_inc(&idev->refcnt);
+}
 
 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
 
@@ -215,9 +233,15 @@ static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
                inet6_ifa_finish_destroy(ifp);
 }
 
-#define __in6_ifa_put(ifp)     atomic_dec(&(ifp)->refcnt)
-#define in6_ifa_hold(ifp)      atomic_inc(&(ifp)->refcnt)
+static inline void __in6_ifa_put(struct inet6_ifaddr *ifp)
+{
+       atomic_dec(&ifp->refcnt);
+}
 
+static inline void in6_ifa_hold(struct inet6_ifaddr *ifp)
+{
+       atomic_inc(&ifp->refcnt);
+}
 
 
 /*
@@ -240,23 +264,23 @@ static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
 
 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
 {
-       return (((addr->s6_addr32[0] ^ htonl(0xff020000)) |
+       return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |
                addr->s6_addr32[1] | addr->s6_addr32[2] |
-               (addr->s6_addr32[3] ^ htonl(0x00000001))) == 0);
+               (addr->s6_addr32[3] ^ htonl(0x00000001))) == 0;
 }
 
 static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
 {
-       return (((addr->s6_addr32[0] ^ htonl(0xff020000)) |
+       return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |
                addr->s6_addr32[1] | addr->s6_addr32[2] |
-               (addr->s6_addr32[3] ^ htonl(0x00000002))) == 0);
+               (addr->s6_addr32[3] ^ htonl(0x00000002))) == 0;
 }
 
 extern int __ipv6_isatap_ifid(u8 *eui, __be32 addr);
 
 static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
 {
-       return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE));
+       return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE);
 }
 
 #ifdef CONFIG_PROC_FS