Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef _NFNETLINK_H
2#define _NFNETLINK_H
3
4
5#include <linux/netlink.h>
6#include <linux/capability.h>
7#include <net/netlink.h>
8#include <uapi/linux/netfilter/nfnetlink.h>
9
10struct 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 */
19};
20
21struct nfnetlink_subsystem {
22 const char *name;
23 __u8 subsys_id; /* nfnetlink subsystem ID */
24 __u8 cb_count; /* number of callbacks */
25 const struct nfnl_callback *cb; /* callback for individual types */
26};
27
28extern int nfnetlink_subsys_register(const struct nfnetlink_subsystem *n);
29extern int nfnetlink_subsys_unregister(const struct nfnetlink_subsystem *n);
30
31extern int nfnetlink_has_listeners(struct net *net, unsigned int group);
32extern int nfnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group,
33 int echo, gfp_t flags);
34extern int nfnetlink_set_err(struct net *net, u32 pid, u32 group, int error);
35extern int nfnetlink_unicast(struct sk_buff *skb, struct net *net, u_int32_t pid, int flags);
36
37extern void nfnl_lock(__u8 subsys_id);
38extern void nfnl_unlock(__u8 subsys_id);
39
40#define MODULE_ALIAS_NFNL_SUBSYS(subsys) \
41 MODULE_ALIAS("nfnetlink-subsys-" __stringify(subsys))
42
43#endif /* _NFNETLINK_H */