4 #include <linux/rhashtable.h>
5 #include <linux/atomic.h>
6 #include <linux/workqueue.h>
9 #define NLGRPSZ(x) (ALIGN(x, sizeof(unsigned long) * 8) / 8)
10 #define NLGRPLONGS(x) (NLGRPSZ(x)/sizeof(unsigned long))
13 /* struct sock has to be the first member of netlink_sock */
21 unsigned long *groups;
23 size_t max_recvmsg_len;
24 wait_queue_head_t wait;
27 struct netlink_callback cb;
28 struct mutex *cb_mutex;
29 struct mutex cb_def_mutex;
30 void (*netlink_rcv)(struct sk_buff *skb);
31 int (*netlink_bind)(struct net *net, int group);
32 void (*netlink_unbind)(struct net *net, int group);
33 struct module *module;
35 struct rhash_head node;
37 struct work_struct work;
40 static inline struct netlink_sock *nlk_sk(struct sock *sk)
42 return container_of(sk, struct netlink_sock, sk);
45 struct netlink_table {
46 struct rhashtable hash;
47 struct hlist_head mc_list;
48 struct listeners __rcu *listeners;
51 struct mutex *cb_mutex;
52 struct module *module;
53 int (*bind)(struct net *net, int group);
54 void (*unbind)(struct net *net, int group);
55 bool (*compare)(struct net *net, struct sock *sock);
59 extern struct netlink_table *nl_table;
60 extern rwlock_t nl_table_lock;