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 wait_queue_head_t wait;
36 struct netlink_callback cb;
37 struct mutex *cb_mutex;
38 struct mutex cb_def_mutex;
39 void (*netlink_rcv)(struct sk_buff *skb);
40 void (*netlink_bind)(int group);
41 struct module *module;
42 #ifdef CONFIG_NETLINK_MMAP
43 struct mutex pg_vec_lock;
44 struct netlink_ring rx_ring;
45 struct netlink_ring tx_ring;
47 #endif /* CONFIG_NETLINK_MMAP */
50 static inline struct netlink_sock *nlk_sk(struct sock *sk)
52 return container_of(sk, struct netlink_sock, sk);
55 struct nl_portid_hash {
56 struct hlist_head *table;
57 unsigned long rehash_time;
63 unsigned int max_shift;
68 struct netlink_table {
69 struct nl_portid_hash hash;
70 struct hlist_head mc_list;
71 struct listeners __rcu *listeners;
74 struct mutex *cb_mutex;
75 struct module *module;
76 void (*bind)(int group);
77 bool (*compare)(struct net *net, struct sock *sock);
81 extern struct netlink_table *nl_table;
82 extern rwlock_t nl_table_lock;