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);
20 struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev,
21 unsigned change, gfp_t flags);
22 void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev,
26 /* RTNL is used as a global lock for all changes to network configuration */
27 extern void rtnl_lock(void);
28 extern void rtnl_unlock(void);
29 extern int rtnl_trylock(void);
30 extern int rtnl_is_locked(void);
32 extern wait_queue_head_t netdev_unregistering_wq;
33 extern struct mutex net_mutex;
35 #ifdef CONFIG_PROVE_LOCKING
36 extern bool lockdep_rtnl_is_held(void);
38 static inline bool lockdep_rtnl_is_held(void)
42 #endif /* #ifdef CONFIG_PROVE_LOCKING */
45 * rcu_dereference_rtnl - rcu_dereference with debug checking
46 * @p: The pointer to read, prior to dereferencing
48 * Do an rcu_dereference(p), but check caller either holds rcu_read_lock()
49 * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference()
51 #define rcu_dereference_rtnl(p) \
52 rcu_dereference_check(p, lockdep_rtnl_is_held())
55 * rcu_dereference_bh_rtnl - rcu_dereference_bh with debug checking
56 * @p: The pointer to read, prior to dereference
58 * Do an rcu_dereference_bh(p), but check caller either holds rcu_read_lock_bh()
59 * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference_bh()
61 #define rcu_dereference_bh_rtnl(p) \
62 rcu_dereference_bh_check(p, lockdep_rtnl_is_held())
65 * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL
66 * @p: The pointer to read, prior to dereferencing
68 * Return the value of the specified RCU-protected pointer, but omit
69 * both the smp_read_barrier_depends() and the ACCESS_ONCE(), because
72 #define rtnl_dereference(p) \
73 rcu_dereference_protected(p, lockdep_rtnl_is_held())
75 static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev)
77 return rtnl_dereference(dev->ingress_queue);
80 struct netdev_queue *dev_ingress_queue_create(struct net_device *dev);
82 #ifdef CONFIG_NET_INGRESS
83 void net_inc_ingress_queue(void);
84 void net_dec_ingress_queue(void);
87 #ifdef CONFIG_NET_EGRESS
88 void net_inc_egress_queue(void);
89 void net_dec_egress_queue(void);
92 void rtnetlink_init(void);
93 void __rtnl_unlock(void);
94 void rtnl_kfree_skbs(struct sk_buff *head, struct sk_buff *tail);
96 #define ASSERT_RTNL() do { \
97 if (unlikely(!rtnl_is_locked())) { \
98 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
99 __FILE__, __LINE__); \
104 extern int ndo_dflt_fdb_dump(struct sk_buff *skb,
105 struct netlink_callback *cb,
106 struct net_device *dev,
107 struct net_device *filter_dev,
109 extern int ndo_dflt_fdb_add(struct ndmsg *ndm,
111 struct net_device *dev,
112 const unsigned char *addr,
115 extern int ndo_dflt_fdb_del(struct ndmsg *ndm,
117 struct net_device *dev,
118 const unsigned char *addr,
121 extern int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
122 struct net_device *dev, u16 mode,
123 u32 flags, u32 mask, int nlflags,
125 int (*vlan_fill)(struct sk_buff *skb,
126 struct net_device *dev,
128 #endif /* __LINUX_RTNETLINK_H */