ip6protosw.h revision 83366 
1/*	$FreeBSD: head/sys/netinet6/ip6protosw.h 83366 2001-09-12 08:38:13Z julian $	*/
2/*	$KAME: ip6protosw.h,v 1.22 2001/02/08 18:02:08 itojun 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 * 3. All advertising materials mentioning features or use of this software
49 *    must display the following acknowledgement:
50 *	This product includes software developed by the University of
51 *	California, Berkeley and its contributors.
52 * 4. Neither the name of the University nor the names of its contributors
53 *    may be used to endorse or promote products derived from this software
54 *    without specific prior written permission.
55 *
56 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
57 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
58 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
59 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
60 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
61 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
62 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
63 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
64 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
65 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
66 * SUCH DAMAGE.
67 *
68 *	@(#)protosw.h	8.1 (Berkeley) 6/2/93
69 */
70
71#ifndef _NETINET6_IP6PROTOSW_H_
72#define _NETINET6_IP6PROTOSW_H_
73
74/*
75 * For pfil_head structure.
76 */
77#include <net/pfil.h>
78
79/*
80 * Protocol switch table for IPv6.
81 * All other definitions should refer to sys/protosw.h
82 */
83
84struct mbuf;
85struct sockaddr;
86struct socket;
87struct domain;
88struct thread;
89struct ip6_hdr;
90struct icmp6_hdr;
91struct in6_addr;
92struct pr_usrreqs;
93
94/*
95 * argument type for the last arg of pr_ctlinput().
96 * should be consulted only with AF_INET6 family.
97 *
98 * IPv6 ICMP IPv6 [exthdrs] finalhdr paylaod
99 * ^    ^    ^              ^
100 * |    |    ip6c_ip6       ip6c_off
101 * |    ip6c_icmp6
102 * ip6c_m
103 *
104 * ip6c_finaldst usually points to ip6c_ip6->ip6_dst.  if the original
105 * (internal) packet carries a routing header, it may point the final
106 * dstination address in the routing header.
107 *
108 * ip6c_src: ip6c_ip6->ip6_src + scope info + flowlabel in ip6c_ip6
109 *	(beware of flowlabel, if you try to compare it against others)
110 * ip6c_dst: ip6c_finaldst + scope info
111 */
112struct ip6ctlparam {
113	struct mbuf *ip6c_m;		/* start of mbuf chain */
114	struct icmp6_hdr *ip6c_icmp6;	/* icmp6 header of target packet */
115	struct ip6_hdr *ip6c_ip6;	/* ip6 header of target packet */
116	int ip6c_off;			/* offset of the target proto header */
117	struct sockaddr_in6 *ip6c_src;	/* srcaddr w/ additional info */
118	struct sockaddr_in6 *ip6c_dst;	/* (final) dstaddr w/ additional info */
119	struct in6_addr *ip6c_finaldst;	/* final destination address */
120	void *ip6c_cmdarg;		/* control command dependent data */
121	u_int8_t ip6c_nxt;		/* final next header field */
122};
123
124struct ip6protosw {
125	short	pr_type;		/* socket type used for */
126	struct	domain *pr_domain;	/* domain protocol a member of */
127	short	pr_protocol;		/* protocol number */
128	short	pr_flags;		/* see below */
129
130/* protocol-protocol hooks */
131	int	(*pr_input)		/* input to protocol (from below) */
132			__P((struct mbuf **, int *, int));
133	int	(*pr_output)		/* output to protocol (from above) */
134			__P((struct mbuf *, ...));
135	void	(*pr_ctlinput)		/* control input (from below) */
136			__P((int, struct sockaddr *, void *));
137	int	(*pr_ctloutput)		/* control output (from above) */
138			__P((struct socket *, struct sockopt *));
139
140/* user-protocol hook */
141	int	(*pr_usrreq)		/* user request: see list below */
142			__P((struct socket *, int, struct mbuf *,
143			     struct mbuf *, struct mbuf *, struct thread *));
144
145/* utility hooks */
146	void	(*pr_init)		/* initialization hook */
147			__P((void));
148
149	void	(*pr_fasttimo)		/* fast timeout (200ms) */
150			__P((void));
151	void	(*pr_slowtimo)		/* slow timeout (500ms) */
152			__P((void));
153	void	(*pr_drain)		/* flush any excess space possible */
154			__P((void));
155	struct	pr_usrreqs *pr_usrreqs;	/* supersedes pr_usrreq() */
156	struct	pfil_head	pr_pfh;
157};
158
159#endif /* !_NETINET6_IP6PROTOSW_H_ */
160