ip6protosw.h revision 139826 
1/*	$FreeBSD: head/sys/netinet6/ip6protosw.h 139826 2005-01-07 02:30:35Z imp $	*/
2/*	$KAME: ip6protosw.h,v 1.25 2001/09/26 06:13:03 keiichi Exp $	*/
3
4/*-
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 */
33
34/*	BSDI protosw.h,v 2.3 1996/10/11 16:02:40 pjd Exp	*/
35
36/*-
37 * Copyright (c) 1982, 1986, 1993
38 *	The Regents of the University of California.  All rights reserved.
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 * 1. Redistributions of source code must retain the above copyright
44 *    notice, this list of conditions and the following disclaimer.
45 * 2. Redistributions in binary form must reproduce the above copyright
46 *    notice, this list of conditions and the following disclaimer in the
47 *    documentation and/or other materials provided with the distribution.
48 * 4. Neither the name of the University nor the names of its contributors
49 *    may be used to endorse or promote products derived from this software
50 *    without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62 * SUCH DAMAGE.
63 *
64 *	@(#)protosw.h	8.1 (Berkeley) 6/2/93
65 */
66
67#ifndef _NETINET6_IP6PROTOSW_H_
68#define _NETINET6_IP6PROTOSW_H_
69
70/*
71 * Protocol switch table for IPv6.
72 * All other definitions should refer to sys/protosw.h
73 */
74
75struct mbuf;
76struct sockaddr;
77struct socket;
78struct domain;
79struct thread;
80struct ip6_hdr;
81struct icmp6_hdr;
82struct in6_addr;
83struct pr_usrreqs;
84
85/*
86 * argument type for the last arg of pr_ctlinput().
87 * should be consulted only with AF_INET6 family.
88 *
89 * IPv6 ICMP IPv6 [exthdrs] finalhdr payload
90 * ^    ^    ^              ^
91 * |    |    ip6c_ip6       ip6c_off
92 * |    ip6c_icmp6
93 * ip6c_m
94 *
95 * ip6c_finaldst usually points to ip6c_ip6->ip6_dst.  if the original
96 * (internal) packet carries a routing header, it may point the final
97 * dstination address in the routing header.
98 *
99 * ip6c_src: ip6c_ip6->ip6_src + scope info + flowlabel in ip6c_ip6
100 *	(beware of flowlabel, if you try to compare it against others)
101 * ip6c_dst: ip6c_finaldst + scope info
102 */
103struct ip6ctlparam {
104	struct mbuf *ip6c_m;		/* start of mbuf chain */
105	struct icmp6_hdr *ip6c_icmp6;	/* icmp6 header of target packet */
106	struct ip6_hdr *ip6c_ip6;	/* ip6 header of target packet */
107	int ip6c_off;			/* offset of the target proto header */
108	struct sockaddr_in6 *ip6c_src;	/* srcaddr w/ additional info */
109	struct sockaddr_in6 *ip6c_dst;	/* (final) dstaddr w/ additional info */
110	struct in6_addr *ip6c_finaldst;	/* final destination address */
111	void *ip6c_cmdarg;		/* control command dependent data */
112	u_int8_t ip6c_nxt;		/* final next header field */
113};
114
115struct ip6protosw {
116	short	pr_type;		/* socket type used for */
117	struct	domain *pr_domain;	/* domain protocol a member of */
118	short	pr_protocol;		/* protocol number */
119	short	pr_flags;		/* see below */
120
121/* protocol-protocol hooks */
122	int	(*pr_input)		/* input to protocol (from below) */
123			__P((struct mbuf **, int *, int));
124	int	(*pr_output)		/* output to protocol (from above) */
125			__P((struct mbuf *, ...));
126	void	(*pr_ctlinput)		/* control input (from below) */
127			__P((int, struct sockaddr *, void *));
128	int	(*pr_ctloutput)		/* control output (from above) */
129			__P((struct socket *, struct sockopt *));
130
131/* user-protocol hook */
132	int	(*pr_usrreq)		/* user request: see list below */
133			__P((struct socket *, int, struct mbuf *,
134			     struct mbuf *, struct mbuf *, struct thread *));
135
136/* utility hooks */
137	void	(*pr_init)		/* initialization hook */
138			__P((void));
139
140	void	(*pr_fasttimo)		/* fast timeout (200ms) */
141			__P((void));
142	void	(*pr_slowtimo)		/* slow timeout (500ms) */
143			__P((void));
144	void	(*pr_drain)		/* flush any excess space possible */
145			__P((void));
146	struct	pr_usrreqs *pr_usrreqs;	/* supersedes pr_usrreq() */
147};
148
149#ifdef _KERNEL
150extern struct ip6protosw inet6sw[];
151#endif
152
153#endif /* !_NETINET6_IP6PROTOSW_H_ */
154