5 #include <linux/netlink.h>
6 #include <linux/capability.h>
7 #include <net/netlink.h>
8 #include <uapi/linux/netfilter/nfnetlink.h>
10 struct nfnl_callback
{
11 int (*call
)(struct sock
*nl
, struct sk_buff
*skb
,
12 const struct nlmsghdr
*nlh
,
13 const struct nlattr
* const cda
[]);
14 int (*call_rcu
)(struct sock
*nl
, struct sk_buff
*skb
,
15 const struct nlmsghdr
*nlh
,
16 const struct nlattr
* const cda
[]);
17 const struct nla_policy
*policy
; /* netlink attribute policy */
18 const u_int16_t attr_count
; /* number of nlattr's */
21 struct nfnetlink_subsystem
{
23 __u8 subsys_id
; /* nfnetlink subsystem ID */
24 __u8 cb_count
; /* number of callbacks */
25 const struct nfnl_callback
*cb
; /* callback for individual types */
28 extern int nfnetlink_subsys_register(const struct nfnetlink_subsystem
*n
);
29 extern int nfnetlink_subsys_unregister(const struct nfnetlink_subsystem
*n
);
31 extern int nfnetlink_has_listeners(struct net
*net
, unsigned int group
);
32 extern int nfnetlink_send(struct sk_buff
*skb
, struct net
*net
, u32 pid
, unsigned int group
,
33 int echo
, gfp_t flags
);
34 extern int nfnetlink_set_err(struct net
*net
, u32 pid
, u32 group
, int error
);
35 extern int nfnetlink_unicast(struct sk_buff
*skb
, struct net
*net
, u_int32_t pid
, int flags
);
37 extern void nfnl_lock(__u8 subsys_id
);
38 extern void nfnl_unlock(__u8 subsys_id
);
40 #define MODULE_ALIAS_NFNL_SUBSYS(subsys) \
41 MODULE_ALIAS("nfnetlink-subsys-" __stringify(subsys))
43 #endif /* _NFNETLINK_H */