1178825Sdfr/*-
255682Smarkm * Copyright (c) 2016 Yandex LLC
355682Smarkm * Copyright (c) 2016 Andrey V. Elsukov <ae@FreeBSD.org>
4127808Snectar * All rights reserved.
555682Smarkm *
655682Smarkm * Redistribution and use in source and binary forms, with or without
755682Smarkm * modification, are permitted provided that the following conditions
855682Smarkm * are met:
955682Smarkm *
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
28#ifndef	_IP_FW_NPTV6_H_
29#define	_IP_FW_NPTV6_H_
30
31#include <netinet6/ip_fw_nptv6.h>
32
33#ifdef _KERNEL
34#define	NPTV6STATS	(sizeof(struct ipfw_nptv6_stats) / sizeof(uint64_t))
35#define	NPTV6STAT_ADD(c, f, v)		\
36    counter_u64_add((c)->stats[		\
37	offsetof(struct ipfw_nptv6_stats, f) / sizeof(uint64_t)], (v))
38#define	NPTV6STAT_INC(c, f)	NPTV6STAT_ADD(c, f, 1)
39#define	NPTV6STAT_FETCH(c, f)		\
40    counter_u64_fetch((c)->stats[	\
41	offsetof(struct ipfw_nptv6_stats, f) / sizeof(uint64_t)])
42
43struct nptv6_cfg {
44	struct named_object	no;
45
46	struct in6_addr		internal;   /* Internal IPv6 prefix */
47	struct in6_addr		external;   /* External IPv6 prefix */
48	struct in6_addr		mask;	    /* IPv6 prefix mask */
49	uint16_t		adjustment; /* Checksum adjustment value */
50	uint8_t			plen;	    /* Prefix length */
51	uint8_t			flags;	    /* Flags for internal use */
52#define	NPTV6_READY		0x80
53#define	NPTV6_48PLEN		0x40
54
55	char			if_name[IF_NAMESIZE];
56	char			name[64];   /* Instance name */
57	counter_u64_t		stats[NPTV6STATS]; /* Statistics counters */
58};
59#define	NPTV6_FLAGSMASK		(NPTV6_DYNAMIC_PREFIX)
60
61int nptv6_init(struct ip_fw_chain *ch, int first);
62void nptv6_uninit(struct ip_fw_chain *ch, int last);
63#endif /* _KERNEL */
64
65#endif /* _IP_FW_NPTV6_H_ */
66