1 #ifndef _NFNETLINK_COMPAT_H
2 #define _NFNETLINK_COMPAT_H
4 /* Old nfnetlink macros for userspace */
6 /* nfnetlink groups: Up to 32 maximum */
7 #define NF_NETLINK_CONNTRACK_NEW 0x00000001
8 #define NF_NETLINK_CONNTRACK_UPDATE 0x00000002
9 #define NF_NETLINK_CONNTRACK_DESTROY 0x00000004
10 #define NF_NETLINK_CONNTRACK_EXP_NEW 0x00000008
11 #define NF_NETLINK_CONNTRACK_EXP_UPDATE 0x00000010
12 #define NF_NETLINK_CONNTRACK_EXP_DESTROY 0x00000020
14 /* Generic structure for encapsulation optional netfilter information.
15 * It is reminiscent of sockaddr, but with sa_family replaced
16 * with attribute type.
17 * ! This should someday be put somewhere generic as now rtnetlink and
18 * ! nfnetlink use the same attributes methods. - J. Schulist.
24 u_int16_t nfa_type; /* we use 15 bits for the type, and the highest
25 * bit to indicate whether the payload is nested */
28 /* FIXME: Apart from NFNL_NFA_NESTED shamelessly copy and pasted from
29 * rtnetlink.h, it's time to put this in a generic file */
31 #define NFNL_NFA_NEST 0x8000
32 #define NFA_TYPE(attr) ((attr)->nfa_type & 0x7fff)
35 #define NFA_ALIGN(len) (((len) + NFA_ALIGNTO - 1) & ~(NFA_ALIGNTO - 1))
36 #define NFA_OK(nfa,len) ((len) > 0 && (nfa)->nfa_len >= sizeof(struct nfattr) \
37 && (nfa)->nfa_len <= (len))
38 #define NFA_NEXT(nfa,attrlen) ((attrlen) -= NFA_ALIGN((nfa)->nfa_len), \
39 (struct nfattr *)(((char *)(nfa)) + NFA_ALIGN((nfa)->nfa_len)))
40 #define NFA_LENGTH(len) (NFA_ALIGN(sizeof(struct nfattr)) + (len))
41 #define NFA_SPACE(len) NFA_ALIGN(NFA_LENGTH(len))
42 #define NFA_DATA(nfa) ((void *)(((char *)(nfa)) + NFA_LENGTH(0)))
43 #define NFA_PAYLOAD(nfa) ((int)((nfa)->nfa_len) - NFA_LENGTH(0))
44 #define NFA_NEST(skb, type) \
45 ({ struct nfattr *__start = (struct nfattr *)skb_tail_pointer(skb); \
46 NFA_PUT(skb, (NFNL_NFA_NEST | type), 0, NULL); \
48 #define NFA_NEST_END(skb, start) \
49 ({ (start)->nfa_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
51 #define NFA_NEST_CANCEL(skb, start) \
53 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
56 #define NFM_NFA(n) ((struct nfattr *)(((char *)(n)) \
57 + NLMSG_ALIGN(sizeof(struct nfgenmsg))))
58 #define NFM_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg))
60 #endif /* ! __KERNEL__ */
61 #endif /* _NFNETLINK_COMPAT_H */