summaryrefslogtreecommitdiff
path: root/include/net/addrconf.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/net/addrconf.h')
-rw-r--r--include/net/addrconf.h65
1 files changed, 43 insertions, 22 deletions
diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index 4d40c4d0230b..a9441249306c 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -175,20 +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();
@@ -197,16 +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);
@@ -216,9 +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);
+}
/*
@@ -241,23 +264,21 @@ 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