1  #ifndef __NET_FIB_NOTIFIER_H
2  #define __NET_FIB_NOTIFIER_H
3  
4  #include <linux/types.h>
5  #include <linux/notifier.h>
6  #include <net/net_namespace.h>
7  
8  struct module;
9  
10  struct fib_notifier_info {
11  	int family;
12  	struct netlink_ext_ack  *extack;
13  };
14  
15  enum fib_event_type {
16  	FIB_EVENT_ENTRY_REPLACE,
17  	FIB_EVENT_ENTRY_APPEND,
18  	FIB_EVENT_ENTRY_ADD,
19  	FIB_EVENT_ENTRY_DEL,
20  	FIB_EVENT_RULE_ADD,
21  	FIB_EVENT_RULE_DEL,
22  	FIB_EVENT_NH_ADD,
23  	FIB_EVENT_NH_DEL,
24  	FIB_EVENT_VIF_ADD,
25  	FIB_EVENT_VIF_DEL,
26  };
27  
28  struct fib_notifier_ops {
29  	int family;
30  	struct list_head list;
31  	unsigned int (*fib_seq_read)(struct net *net);
32  	int (*fib_dump)(struct net *net, struct notifier_block *nb,
33  			struct netlink_ext_ack *extack);
34  	struct module *owner;
35  	struct rcu_head rcu;
36  };
37  
38  int call_fib_notifier(struct notifier_block *nb,
39  		      enum fib_event_type event_type,
40  		      struct fib_notifier_info *info);
41  int call_fib_notifiers(struct net *net, enum fib_event_type event_type,
42  		       struct fib_notifier_info *info);
43  int register_fib_notifier(struct net *net, struct notifier_block *nb,
44  			  void (*cb)(struct notifier_block *nb),
45  			  struct netlink_ext_ack *extack);
46  int unregister_fib_notifier(struct net *net, struct notifier_block *nb);
47  struct fib_notifier_ops *
48  fib_notifier_ops_register(const struct fib_notifier_ops *tmpl, struct net *net);
49  void fib_notifier_ops_unregister(struct fib_notifier_ops *ops);
50  
51  #endif
52