6 #define NLGRPSZ(x) (ALIGN(x, sizeof(unsigned long) * 8) / 8)
7 #define NLGRPLONGS(x) (NLGRPSZ(x)/sizeof(unsigned long))
12 unsigned int frames_per_block;
13 unsigned int frame_size;
14 unsigned int frame_max;
16 unsigned int pg_vec_order;
17 unsigned int pg_vec_pages;
18 unsigned int pg_vec_len;
24 /* struct sock has to be the first member of netlink_sock */
32 unsigned long *groups;
34 size_t max_recvmsg_len;
35 wait_queue_head_t wait;
37 struct netlink_callback cb;
38 struct mutex *cb_mutex;
39 struct mutex cb_def_mutex;
40 void (*netlink_rcv)(struct sk_buff *skb);
41 int (*netlink_bind)(int group);
42 void (*netlink_unbind)(int group);
43 struct module *module;
44 #ifdef CONFIG_NETLINK_MMAP
45 struct mutex pg_vec_lock;
46 struct netlink_ring rx_ring;
47 struct netlink_ring tx_ring;
49 #endif /* CONFIG_NETLINK_MMAP */
52 static inline struct netlink_sock *nlk_sk(struct sock *sk)
54 return container_of(sk, struct netlink_sock, sk);
57 struct nl_portid_hash {
58 struct hlist_head *table;
59 unsigned long rehash_time;
65 unsigned int max_shift;
70 struct netlink_table {
71 struct nl_portid_hash hash;
72 struct hlist_head mc_list;
73 struct listeners __rcu *listeners;
76 struct mutex *cb_mutex;
77 struct module *module;
78 int (*bind)(int group);
79 void (*unbind)(int group);
80 bool (*compare)(struct net *net, struct sock *sock);
84 extern struct netlink_table *nl_table;
85 extern rwlock_t nl_table_lock;