1 #ifndef __LINUX_RTNETLINK_H
2 #define __LINUX_RTNETLINK_H
5 #include <linux/mutex.h>
6 #include <linux/netdevice.h>
7 #include <linux/wait.h>
8 #include <uapi/linux/rtnetlink.h>
10 extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
11 extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
12 extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid,
13 u32 group, struct nlmsghdr *nlh, gfp_t flags);
14 extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
15 extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
16 extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
17 u32 id, long expires, u32 error);
19 void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change, gfp_t flags);
21 /* RTNL is used as a global lock for all changes to network configuration */
22 extern void rtnl_lock(void);
23 extern void rtnl_unlock(void);
24 extern int rtnl_trylock(void);
25 extern int rtnl_is_locked(void);
27 extern wait_queue_head_t netdev_unregistering_wq;
28 extern struct mutex net_mutex;
30 #ifdef CONFIG_PROVE_LOCKING
31 extern int lockdep_rtnl_is_held(void);
33 static inline int lockdep_rtnl_is_held(void)
37 #endif /* #ifdef CONFIG_PROVE_LOCKING */
40 * rcu_dereference_rtnl - rcu_dereference with debug checking
41 * @p: The pointer to read, prior to dereferencing
43 * Do an rcu_dereference(p), but check caller either holds rcu_read_lock()
44 * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference()
46 #define rcu_dereference_rtnl(p) \
47 rcu_dereference_check(p, lockdep_rtnl_is_held())
50 * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL
51 * @p: The pointer to read, prior to dereferencing
53 * Return the value of the specified RCU-protected pointer, but omit
54 * both the smp_read_barrier_depends() and the ACCESS_ONCE(), because
57 #define rtnl_dereference(p) \
58 rcu_dereference_protected(p, lockdep_rtnl_is_held())
60 static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev)
62 return rtnl_dereference(dev->ingress_queue);
65 extern struct netdev_queue *dev_ingress_queue_create(struct net_device *dev);
67 extern void rtnetlink_init(void);
68 extern void __rtnl_unlock(void);
70 #define ASSERT_RTNL() do { \
71 if (unlikely(!rtnl_is_locked())) { \
72 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
73 __FILE__, __LINE__); \
78 extern int ndo_dflt_fdb_dump(struct sk_buff *skb,
79 struct netlink_callback *cb,
80 struct net_device *dev,
81 struct net_device *filter_dev,
83 extern int ndo_dflt_fdb_add(struct ndmsg *ndm,
85 struct net_device *dev,
86 const unsigned char *addr,
88 extern int ndo_dflt_fdb_del(struct ndmsg *ndm,
90 struct net_device *dev,
91 const unsigned char *addr);
93 extern int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
94 struct net_device *dev, u16 mode);
95 #endif /* __LINUX_RTNETLINK_H */