1 #ifndef __LINUX_RTNETLINK_H
2 #define __LINUX_RTNETLINK_H
5 #include <linux/mutex.h>
6 #include <linux/netdevice.h>
7 #include <uapi/linux/rtnetlink.h>
9 extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
10 extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
11 extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid,
12 u32 group, struct nlmsghdr *nlh, gfp_t flags);
13 extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
14 extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
15 extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
16 u32 id, long expires, u32 error);
18 void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change, gfp_t flags);
20 /* RTNL is used as a global lock for all changes to network configuration */
21 extern void rtnl_lock(void);
22 extern void rtnl_unlock(void);
23 extern int rtnl_trylock(void);
24 extern int rtnl_is_locked(void);
25 #ifdef CONFIG_PROVE_LOCKING
26 extern int lockdep_rtnl_is_held(void);
28 static inline int lockdep_rtnl_is_held(void)
32 #endif /* #ifdef CONFIG_PROVE_LOCKING */
35 * rcu_dereference_rtnl - rcu_dereference with debug checking
36 * @p: The pointer to read, prior to dereferencing
38 * Do an rcu_dereference(p), but check caller either holds rcu_read_lock()
39 * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference()
41 #define rcu_dereference_rtnl(p) \
42 rcu_dereference_check(p, lockdep_rtnl_is_held())
45 * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL
46 * @p: The pointer to read, prior to dereferencing
48 * Return the value of the specified RCU-protected pointer, but omit
49 * both the smp_read_barrier_depends() and the ACCESS_ONCE(), because
52 #define rtnl_dereference(p) \
53 rcu_dereference_protected(p, lockdep_rtnl_is_held())
55 static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev)
57 return rtnl_dereference(dev->ingress_queue);
60 extern struct netdev_queue *dev_ingress_queue_create(struct net_device *dev);
62 extern void rtnetlink_init(void);
63 extern void __rtnl_unlock(void);
65 #define ASSERT_RTNL() do { \
66 if (unlikely(!rtnl_is_locked())) { \
67 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
68 __FILE__, __LINE__); \
73 extern int ndo_dflt_fdb_dump(struct sk_buff *skb,
74 struct netlink_callback *cb,
75 struct net_device *dev,
77 extern int ndo_dflt_fdb_add(struct ndmsg *ndm,
79 struct net_device *dev,
80 const unsigned char *addr,
82 extern int ndo_dflt_fdb_del(struct ndmsg *ndm,
84 struct net_device *dev,
85 const unsigned char *addr);
87 extern int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
88 struct net_device *dev, u16 mode);
89 #endif /* __LINUX_RTNETLINK_H */