nfnetlink.h

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#ifndef _UAPI_NFNETLINK_H
#define _UAPI_NFNETLINK_H
#include <linux/types.h>
#include <linux/netfilter/nfnetlink_compat.h>

enum nfnetlink_groups {
    NFNLGRP_NONE,
#define NFNLGRP_NONE            NFNLGRP_NONE
    NFNLGRP_CONNTRACK_NEW,
#define NFNLGRP_CONNTRACK_NEW       NFNLGRP_CONNTRACK_NEW
    NFNLGRP_CONNTRACK_UPDATE,
#define NFNLGRP_CONNTRACK_UPDATE    NFNLGRP_CONNTRACK_UPDATE
    NFNLGRP_CONNTRACK_DESTROY,
#define NFNLGRP_CONNTRACK_DESTROY   NFNLGRP_CONNTRACK_DESTROY
    NFNLGRP_CONNTRACK_EXP_NEW,
#define NFNLGRP_CONNTRACK_EXP_NEW   NFNLGRP_CONNTRACK_EXP_NEW
    NFNLGRP_CONNTRACK_EXP_UPDATE,
#define NFNLGRP_CONNTRACK_EXP_UPDATE    NFNLGRP_CONNTRACK_EXP_UPDATE
    NFNLGRP_CONNTRACK_EXP_DESTROY,
#define NFNLGRP_CONNTRACK_EXP_DESTROY   NFNLGRP_CONNTRACK_EXP_DESTROY
    __NFNLGRP_MAX,
};
#define NFNLGRP_MAX (__NFNLGRP_MAX - 1)

/* General form of address family dependent message.
 */
struct nfgenmsg {
    __u8  nfgen_family;     /* AF_xxx */
    __u8  version;      /* nfnetlink version */
    __be16    res_id;       /* resource id */
};

#define NFNETLINK_V0    0

/* netfilter netlink message types are split in two pieces:
 * 8 bit subsystem, 8bit operation.
 */

#define NFNL_SUBSYS_ID(x)   ((x & 0xff00) >> 8)
#define NFNL_MSG_TYPE(x)    (x & 0x00ff)

/* No enum here, otherwise __stringify() trick of MODULE_ALIAS_NFNL_SUBSYS()
 * won't work anymore */
#define NFNL_SUBSYS_NONE        0
#define NFNL_SUBSYS_CTNETLINK       1
#define NFNL_SUBSYS_CTNETLINK_EXP   2
#define NFNL_SUBSYS_QUEUE       3
#define NFNL_SUBSYS_ULOG        4
#define NFNL_SUBSYS_OSF         5
#define NFNL_SUBSYS_IPSET       6
#define NFNL_SUBSYS_ACCT        7
#define NFNL_SUBSYS_CTNETLINK_TIMEOUT   8
#define NFNL_SUBSYS_CTHELPER        9
#define NFNL_SUBSYS_COUNT       10

#endif /* _UAPI_NFNETLINK_H */