From fb1cf3ede69b9d21f5e655e4ed1649f2917557f9 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Sat, 31 May 2008 17:30:16 +0200 Subject: add missing linux_nfnetlink_compat.h --- include/libnfnetlink/linux_nfnetlink_compat.h | 61 +++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 include/libnfnetlink/linux_nfnetlink_compat.h diff --git a/include/libnfnetlink/linux_nfnetlink_compat.h b/include/libnfnetlink/linux_nfnetlink_compat.h new file mode 100644 index 0000000..e145176 --- /dev/null +++ b/include/libnfnetlink/linux_nfnetlink_compat.h @@ -0,0 +1,61 @@ +#ifndef _NFNETLINK_COMPAT_H +#define _NFNETLINK_COMPAT_H +#ifndef __KERNEL__ +/* Old nfnetlink macros for userspace */ + +/* nfnetlink groups: Up to 32 maximum */ +#define NF_NETLINK_CONNTRACK_NEW 0x00000001 +#define NF_NETLINK_CONNTRACK_UPDATE 0x00000002 +#define NF_NETLINK_CONNTRACK_DESTROY 0x00000004 +#define NF_NETLINK_CONNTRACK_EXP_NEW 0x00000008 +#define NF_NETLINK_CONNTRACK_EXP_UPDATE 0x00000010 +#define NF_NETLINK_CONNTRACK_EXP_DESTROY 0x00000020 + +/* Generic structure for encapsulation optional netfilter information. + * It is reminiscent of sockaddr, but with sa_family replaced + * with attribute type. + * ! This should someday be put somewhere generic as now rtnetlink and + * ! nfnetlink use the same attributes methods. - J. Schulist. + */ + +struct nfattr +{ + u_int16_t nfa_len; + u_int16_t nfa_type; /* we use 15 bits for the type, and the highest + * bit to indicate whether the payload is nested */ +}; + +/* FIXME: Apart from NFNL_NFA_NESTED shamelessly copy and pasted from + * rtnetlink.h, it's time to put this in a generic file */ + +#define NFNL_NFA_NEST 0x8000 +#define NFA_TYPE(attr) ((attr)->nfa_type & 0x7fff) + +#define NFA_ALIGNTO 4 +#define NFA_ALIGN(len) (((len) + NFA_ALIGNTO - 1) & ~(NFA_ALIGNTO - 1)) +#define NFA_OK(nfa,len) ((len) > 0 && (nfa)->nfa_len >= sizeof(struct nfattr) \ + && (nfa)->nfa_len <= (len)) +#define NFA_NEXT(nfa,attrlen) ((attrlen) -= NFA_ALIGN((nfa)->nfa_len), \ + (struct nfattr *)(((char *)(nfa)) + NFA_ALIGN((nfa)->nfa_len))) +#define NFA_LENGTH(len) (NFA_ALIGN(sizeof(struct nfattr)) + (len)) +#define NFA_SPACE(len) NFA_ALIGN(NFA_LENGTH(len)) +#define NFA_DATA(nfa) ((void *)(((char *)(nfa)) + NFA_LENGTH(0))) +#define NFA_PAYLOAD(nfa) ((int)((nfa)->nfa_len) - NFA_LENGTH(0)) +#define NFA_NEST(skb, type) \ +({ struct nfattr *__start = (struct nfattr *)skb_tail_pointer(skb); \ + NFA_PUT(skb, (NFNL_NFA_NEST | type), 0, NULL); \ + __start; }) +#define NFA_NEST_END(skb, start) \ +({ (start)->nfa_len = skb_tail_pointer(skb) - (unsigned char *)(start); \ + (skb)->len; }) +#define NFA_NEST_CANCEL(skb, start) \ +({ if (start) \ + skb_trim(skb, (unsigned char *) (start) - (skb)->data); \ + -1; }) + +#define NFM_NFA(n) ((struct nfattr *)(((char *)(n)) \ + + NLMSG_ALIGN(sizeof(struct nfgenmsg)))) +#define NFM_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg)) + +#endif /* ! __KERNEL__ */ +#endif /* _NFNETLINK_COMPAT_H */ -- cgit v1.2.3