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))
15 unsigned int frames_per_block;
16 unsigned int frame_size;
17 unsigned int frame_max;
19 unsigned int pg_vec_order;
20 unsigned int pg_vec_pages;
21 unsigned int pg_vec_len;
27 /* struct sock has to be the first member of netlink_sock */
35 unsigned long *groups;
37 size_t max_recvmsg_len;
38 wait_queue_head_t wait;
42 struct netlink_callback cb;
43 struct mutex *cb_mutex;
44 struct mutex cb_def_mutex;
45 void (*netlink_rcv)(struct sk_buff *skb);
46 int (*netlink_bind)(struct net *net, int group);
47 void (*netlink_unbind)(struct net *net, int group);
48 struct module *module;
50 struct rhash_head node;
52 struct work_struct work;
55 static inline struct netlink_sock *nlk_sk(struct sock *sk)
57 return container_of(sk, struct netlink_sock, sk);
60 struct netlink_table {
61 struct rhashtable hash;
62 struct hlist_head mc_list;
63 struct listeners __rcu *listeners;
66 struct mutex *cb_mutex;
67 struct module *module;
68 int (*bind)(struct net *net, int group);
69 void (*unbind)(struct net *net, int group);
70 bool (*compare)(struct net *net, struct sock *sock);
74 extern struct netlink_table *nl_table;
75 extern rwlock_t nl_table_lock;