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Commit | Line | Data |
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0f29c768 AV |
1 | #ifndef _AF_NETLINK_H |
2 | #define _AF_NETLINK_H | |
3 | ||
e341694e | 4 | #include <linux/rhashtable.h> |
ee1c2442 | 5 | #include <linux/atomic.h> |
707693c8 | 6 | #include <linux/workqueue.h> |
0f29c768 AV |
7 | #include <net/sock.h> |
8 | ||
457c79e5 AV |
9 | /* flags */ |
10 | #define NETLINK_F_KERNEL_SOCKET 0x1 | |
11 | #define NETLINK_F_RECV_PKTINFO 0x2 | |
12 | #define NETLINK_F_BROADCAST_SEND_ERROR 0x4 | |
13 | #define NETLINK_F_RECV_NO_ENOBUFS 0x8 | |
14 | #define NETLINK_F_LISTEN_ALL_NSID 0x10 | |
15 | #define NETLINK_F_CAP_ACK 0x20 | |
2d4bc933 | 16 | #define NETLINK_F_EXT_ACK 0x40 |
457c79e5 | 17 | |
0f29c768 AV |
18 | #define NLGRPSZ(x) (ALIGN(x, sizeof(unsigned long) * 8) / 8) |
19 | #define NLGRPLONGS(x) (NLGRPSZ(x)/sizeof(unsigned long)) | |
20 | ||
21 | struct netlink_sock { | |
22 | /* struct sock has to be the first member of netlink_sock */ | |
23 | struct sock sk; | |
24 | u32 portid; | |
25 | u32 dst_portid; | |
26 | u32 dst_group; | |
27 | u32 flags; | |
28 | u32 subscriptions; | |
29 | u32 ngroups; | |
30 | unsigned long *groups; | |
31 | unsigned long state; | |
9063e21f | 32 | size_t max_recvmsg_len; |
0f29c768 | 33 | wait_queue_head_t wait; |
da314c99 | 34 | bool bound; |
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); | |
023e2cfa JB |
40 | int (*netlink_bind)(struct net *net, int group); |
41 | void (*netlink_unbind)(struct net *net, int group); | |
0f29c768 | 42 | struct module *module; |
e341694e TG |
43 | |
44 | struct rhash_head node; | |
21e4902a | 45 | struct rcu_head rcu; |
707693c8 | 46 | struct work_struct work; |
0f29c768 AV |
47 | }; |
48 | ||
49 | static inline struct netlink_sock *nlk_sk(struct sock *sk) | |
50 | { | |
51 | return container_of(sk, struct netlink_sock, sk); | |
52 | } | |
53 | ||
0f29c768 | 54 | struct netlink_table { |
e341694e | 55 | struct rhashtable hash; |
0f29c768 AV |
56 | struct hlist_head mc_list; |
57 | struct listeners __rcu *listeners; | |
58 | unsigned int flags; | |
59 | unsigned int groups; | |
60 | struct mutex *cb_mutex; | |
61 | struct module *module; | |
023e2cfa JB |
62 | int (*bind)(struct net *net, int group); |
63 | void (*unbind)(struct net *net, int group); | |
da12c90e | 64 | bool (*compare)(struct net *net, struct sock *sock); |
0f29c768 AV |
65 | int registered; |
66 | }; | |
67 | ||
68 | extern struct netlink_table *nl_table; | |
69 | extern rwlock_t nl_table_lock; | |
70 | ||
71 | #endif |