Commit | Line | Data |
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0f29c768 AV |
1 | #ifndef _AF_NETLINK_H |
2 | #define _AF_NETLINK_H | |
3 | ||
4 | #include <net/sock.h> | |
5 | ||
6 | #define NLGRPSZ(x) (ALIGN(x, sizeof(unsigned long) * 8) / 8) | |
7 | #define NLGRPLONGS(x) (NLGRPSZ(x)/sizeof(unsigned long)) | |
8 | ||
ccdfcc39 PM |
9 | struct netlink_ring { |
10 | void **pg_vec; | |
11 | unsigned int head; | |
12 | unsigned int frames_per_block; | |
13 | unsigned int frame_size; | |
14 | unsigned int frame_max; | |
15 | ||
16 | unsigned int pg_vec_order; | |
17 | unsigned int pg_vec_pages; | |
18 | unsigned int pg_vec_len; | |
19 | ||
20 | atomic_t pending; | |
21 | }; | |
22 | ||
0f29c768 AV |
23 | struct netlink_sock { |
24 | /* struct sock has to be the first member of netlink_sock */ | |
25 | struct sock sk; | |
26 | u32 portid; | |
27 | u32 dst_portid; | |
28 | u32 dst_group; | |
29 | u32 flags; | |
30 | u32 subscriptions; | |
31 | u32 ngroups; | |
32 | unsigned long *groups; | |
33 | unsigned long state; | |
34 | wait_queue_head_t wait; | |
16b304f3 PS |
35 | bool cb_running; |
36 | struct netlink_callback cb; | |
0f29c768 AV |
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; | |
ccdfcc39 PM |
42 | #ifdef CONFIG_NETLINK_MMAP |
43 | struct mutex pg_vec_lock; | |
44 | struct netlink_ring rx_ring; | |
45 | struct netlink_ring tx_ring; | |
46 | atomic_t mapped; | |
47 | #endif /* CONFIG_NETLINK_MMAP */ | |
0f29c768 AV |
48 | }; |
49 | ||
50 | static inline struct netlink_sock *nlk_sk(struct sock *sk) | |
51 | { | |
52 | return container_of(sk, struct netlink_sock, sk); | |
53 | } | |
54 | ||
55 | struct nl_portid_hash { | |
56 | struct hlist_head *table; | |
57 | unsigned long rehash_time; | |
58 | ||
59 | unsigned int mask; | |
60 | unsigned int shift; | |
61 | ||
62 | unsigned int entries; | |
63 | unsigned int max_shift; | |
64 | ||
65 | u32 rnd; | |
66 | }; | |
67 | ||
68 | struct netlink_table { | |
69 | struct nl_portid_hash hash; | |
70 | struct hlist_head mc_list; | |
71 | struct listeners __rcu *listeners; | |
72 | unsigned int flags; | |
73 | unsigned int groups; | |
74 | struct mutex *cb_mutex; | |
75 | struct module *module; | |
76 | void (*bind)(int group); | |
da12c90e | 77 | bool (*compare)(struct net *net, struct sock *sock); |
0f29c768 AV |
78 | int registered; |
79 | }; | |
80 | ||
81 | extern struct netlink_table *nl_table; | |
82 | extern rwlock_t nl_table_lock; | |
83 | ||
84 | #endif |