3 #include <linux/types.h>
4 #include <linux/netfilter/nfnetlink_compat.h>
6 enum nfnetlink_groups {
8 #define NFNLGRP_NONE NFNLGRP_NONE
10 #define NFNLGRP_CONNTRACK_NEW NFNLGRP_CONNTRACK_NEW
11 NFNLGRP_CONNTRACK_UPDATE,
12 #define NFNLGRP_CONNTRACK_UPDATE NFNLGRP_CONNTRACK_UPDATE
13 NFNLGRP_CONNTRACK_DESTROY,
14 #define NFNLGRP_CONNTRACK_DESTROY NFNLGRP_CONNTRACK_DESTROY
15 NFNLGRP_CONNTRACK_EXP_NEW,
16 #define NFNLGRP_CONNTRACK_EXP_NEW NFNLGRP_CONNTRACK_EXP_NEW
17 NFNLGRP_CONNTRACK_EXP_UPDATE,
18 #define NFNLGRP_CONNTRACK_EXP_UPDATE NFNLGRP_CONNTRACK_EXP_UPDATE
19 NFNLGRP_CONNTRACK_EXP_DESTROY,
20 #define NFNLGRP_CONNTRACK_EXP_DESTROY NFNLGRP_CONNTRACK_EXP_DESTROY
23 #define NFNLGRP_MAX (__NFNLGRP_MAX - 1)
25 /* General form of address family dependent message.
28 __u8 nfgen_family; /* AF_xxx */
29 __u8 version; /* nfnetlink version */
30 __be16 res_id; /* resource id */
33 #define NFNETLINK_V0 0
35 /* netfilter netlink message types are split in two pieces:
36 * 8 bit subsystem, 8bit operation.
39 #define NFNL_SUBSYS_ID(x) ((x & 0xff00) >> 8)
40 #define NFNL_MSG_TYPE(x) (x & 0x00ff)
42 /* No enum here, otherwise __stringify() trick of MODULE_ALIAS_NFNL_SUBSYS()
43 * won't work anymore */
44 #define NFNL_SUBSYS_NONE 0
45 #define NFNL_SUBSYS_CTNETLINK 1
46 #define NFNL_SUBSYS_CTNETLINK_EXP 2
47 #define NFNL_SUBSYS_QUEUE 3
48 #define NFNL_SUBSYS_ULOG 4
49 #define NFNL_SUBSYS_COUNT 5
53 #include <linux/netlink.h>
54 #include <linux/capability.h>
55 #include <net/netlink.h>
59 int (*call)(struct sock *nl, struct sk_buff *skb,
60 struct nlmsghdr *nlh, struct nlattr *cda[]);
61 const struct nla_policy *policy; /* netlink attribute policy */
62 const u_int16_t attr_count; /* number of nlattr's */
65 struct nfnetlink_subsystem
68 __u8 subsys_id; /* nfnetlink subsystem ID */
69 __u8 cb_count; /* number of callbacks */
70 const struct nfnl_callback *cb; /* callback for individual types */
73 extern int nfnetlink_subsys_register(const struct nfnetlink_subsystem *n);
74 extern int nfnetlink_subsys_unregister(const struct nfnetlink_subsystem *n);
76 extern int nfnetlink_has_listeners(unsigned int group);
77 extern int nfnetlink_send(struct sk_buff *skb, u32 pid, unsigned group,
79 extern void nfnetlink_set_err(u32 pid, u32 group, int error);
80 extern int nfnetlink_unicast(struct sk_buff *skb, u_int32_t pid, int flags);
82 extern void nfnl_lock(void);
83 extern void nfnl_unlock(void);
85 #define MODULE_ALIAS_NFNL_SUBSYS(subsys) \
86 MODULE_ALIAS("nfnetlink-subsys-" __stringify(subsys))
88 #endif /* __KERNEL__ */
89 #endif /* _NFNETLINK_H */