#ifndef _NET_PFXLEN_H
#define _NET_PFXLEN_H 1

#include <asm/byteorder.h>
#ifdef HAVE_PFXLEN_H
#include <linux/netfilter/pfxlen.h>
#else

#include <libipset/nf_inet_addr.h>	/* union nf_inet_addr */

#define E(a, b, c, d) \
	{.ip6 = { \
		__constant_htonl(a), __constant_htonl(b), \
		__constant_htonl(c), __constant_htonl(d), \
	} }

/*
 * This table works for both IPv4 and IPv6;
 * just use prefixlen_netmask_map[prefixlength].ip.
 */
static const union nf_inet_addr prefixlen_netmask_map[] = {
	E(0x00000000, 0x00000000, 0x00000000, 0x00000000),
	E(0x80000000, 0x00000000, 0x00000000, 0x00000000),
	E(0xC0000000, 0x00000000, 0x00000000, 0x00000000),
	E(0xE0000000, 0x00000000, 0x00000000, 0x00000000),
	E(0xF0000000, 0x00000000, 0x00000000, 0x00000000),
	E(0xF8000000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFC000000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFE000000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFF000000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFF800000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFC00000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFE00000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFF00000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFF80000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFC0000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFE0000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFF0000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFF8000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFC000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFE000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFF000, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFF800, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFFC00, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFFE00, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFFF00, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFFF80, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFFFC0, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFFFE0, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFFFF0, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFFFF8, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFFFFC, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFFFFE, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0x00000000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0x80000000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xC0000000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xE0000000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xF0000000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xF8000000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFC000000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFE000000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFF000000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFF800000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFC00000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFE00000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFF00000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFF80000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFC0000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFE0000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFF0000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFF8000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFC000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFE000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFF000, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFF800, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFC00, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFE00, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFF00, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFF80, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFC0, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFE0, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFF0, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFF8, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFC, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFE, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0x80000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xC0000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xE0000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xF0000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xF8000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFC000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFE000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFF000000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFF800000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFC00000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFE00000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFF00000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFF80000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFC0000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFE0000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF0000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF8000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFC000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFE000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF000, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF800, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFC00, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFE00, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF00, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF80, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFC0, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFE0, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF0, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF8, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFC, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFE, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x80000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xC0000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xE0000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xF0000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xF8000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFC000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFE000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFF000000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFF800000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFC00000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFE00000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFF00000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFF80000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFC0000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFE0000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF0000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFF8000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFC000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFE000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF000),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFF800),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFC00),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFE00),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF00),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFF80),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFC0),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFE0),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF0),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFF8),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFC),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFE),
	E(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF),
};
#endif /* !HAVE_PFXLEN_H */

#define PFXLEN(n)	prefixlen_netmask_map[n].ip
#define PFXLEN6(n)	prefixlen_netmask_map[n].ip6

#endif