1/*-
2 * Copyright (c) 2016 Yandex LLC
3 * Copyright (c) 2016 Andrey V. Elsukov <ae@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * $FreeBSD: stable/11/sys/netpfil/ipfw/nptv6/nptv6.h 303012 2016-07-18 19:46:31Z ae $
28 */
29
30#ifndef	_IP_FW_NPTV6_H_
31#define	_IP_FW_NPTV6_H_
32
33#include <netinet6/ip_fw_nptv6.h>
34
35#ifdef _KERNEL
36#define	NPTV6STATS	(sizeof(struct ipfw_nptv6_stats) / sizeof(uint64_t))
37#define	NPTV6STAT_ADD(c, f, v)		\
38    counter_u64_add((c)->stats[		\
39	offsetof(struct ipfw_nptv6_stats, f) / sizeof(uint64_t)], (v))
40#define	NPTV6STAT_INC(c, f)	NPTV6STAT_ADD(c, f, 1)
41#define	NPTV6STAT_FETCH(c, f)		\
42    counter_u64_fetch((c)->stats[	\
43	offsetof(struct ipfw_nptv6_stats, f) / sizeof(uint64_t)])
44
45struct nptv6_cfg {
46	struct named_object	no;
47
48	struct in6_addr		internal;   /* Internal IPv6 prefix */
49	struct in6_addr		external;   /* External IPv6 prefix */
50	struct in6_addr		mask;	    /* IPv6 prefix mask */
51	uint16_t		adjustment; /* Checksum adjustment value */
52	uint8_t			plen;	    /* Prefix length */
53	uint8_t			flags;	    /* Flags for internal use */
54#define	NPTV6_48PLEN		0x0001
55	char			name[64];   /* Instance name */
56	counter_u64_t		stats[NPTV6STATS]; /* Statistics counters */
57};
58#define	NPTV6_FLAGSMASK		0
59
60int nptv6_init(struct ip_fw_chain *ch, int first);
61void nptv6_uninit(struct ip_fw_chain *ch, int last);
62#endif /* _KERNEL */
63
64#endif /* _IP_FW_NPTV6_H_ */
65
66