diff options
author | David Howells <dhowells@redhat.com> | 2012-10-09 09:48:54 +0100 |
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committer | David Howells <dhowells@redhat.com> | 2012-10-09 09:48:54 +0100 |
commit | 94d0ec58e63159ce5bcdfe612ee220eaeefa3b2a (patch) | |
tree | ec8326cdbfd3a323067ca17760d2f14193b81342 /include/uapi/linux/netfilter/nfnetlink_compat.h | |
parent | 27a3aadcdc4f07c55f4d04e71268b6653ab4a4cf (diff) |
UAPI: (Scripted) Disintegrate include/linux/netfilter
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'include/uapi/linux/netfilter/nfnetlink_compat.h')
-rw-r--r-- | include/uapi/linux/netfilter/nfnetlink_compat.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/include/uapi/linux/netfilter/nfnetlink_compat.h b/include/uapi/linux/netfilter/nfnetlink_compat.h new file mode 100644 index 000000000000..ffb95036bbd4 --- /dev/null +++ b/include/uapi/linux/netfilter/nfnetlink_compat.h @@ -0,0 +1,63 @@ +#ifndef _NFNETLINK_COMPAT_H +#define _NFNETLINK_COMPAT_H + +#include <linux/types.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 { + __u16 nfa_len; + __u16 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 */ |