master
1/* $NetBSD: ip6protosw.h,v 1.27 2019/03/19 13:38:53 msaitoh Exp $ */
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. 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 proc;
80struct ip6_hdr;
81struct icmp6_hdr;
82struct in6_addr;
83
84/*
85 * argument type for the last arg of pr_ctlinput().
86 * should be consulted only with AF_INET6 family.
87 *
88 * IPv6 ICMP IPv6 [exthdrs] finalhdr payload
89 * ^ ^ ^ ^
90 * | | ip6c_ip6 ip6c_off
91 * | ip6c_icmp6
92 * ip6c_m
93 *
94 * ip6c_finaldst usually points to ip6c_ip6->ip6_dst. if the original
95 * (internal) packet carries a routing header, it may point the final
96 * destination address in the routing header.
97 *
98 * ip6c_src: ip6c_ip6->ip6_src + scope info + flowlabel in ip6c_ip6
99 * (beware of flowlabel, if you try to compare it against others)
100 * ip6c_dst: ip6c_finaldst + scope info
101 */
102struct ip6ctlparam {
103 struct mbuf *ip6c_m; /* start of mbuf chain */
104 struct icmp6_hdr *ip6c_icmp6; /* icmp6 header of target packet */
105 struct ip6_hdr *ip6c_ip6; /* ip6 header of target packet */
106 int ip6c_off; /* offset of the target proto header */
107 struct sockaddr_in6 *ip6c_src; /* srcaddr w/ additional info */
108 struct sockaddr_in6 *ip6c_dst; /* (final) dstaddr w/ additional info */
109 struct in6_addr *ip6c_finaldst; /* final destination address */
110 void *ip6c_cmdarg; /* control command dependent data */
111 u_int8_t ip6c_nxt; /* final next header field */
112};
113
114struct ip6protosw {
115 int pr_type; /* socket type used for */
116 struct domain *pr_domain; /* domain protocol a member of */
117 short pr_protocol; /* protocol number */
118 short pr_flags; /* see below */
119
120/* protocol-protocol hooks */
121 int (*pr_input) /* input to protocol (from below) */
122 (struct mbuf **, int *, int);
123 void *(*pr_ctlinput) /* control input (from below) */
124 (int, const struct sockaddr *, void *);
125 int (*pr_ctloutput) /* control output (from above) */
126 (int, struct socket *, struct sockopt *);
127
128/* user-protocol hook */
129 const struct pr_usrreqs *pr_usrreqs;
130
131/* utility hooks */
132 void (*pr_init) /* initialization hook */
133 (void);
134
135 void (*pr_fasttimo) /* fast timeout (200ms) */
136 (void);
137 void (*pr_slowtimo) /* slow timeout (500ms) */
138 (void);
139 void (*pr_drain) /* flush any excess space possible */
140 (void);
141};
142
143#ifdef _KERNEL
144#define PR_WRAP_INPUT6(name) \
145static int \
146name##_wrapper(struct mbuf **mp, int *offp, int proto) \
147{ \
148 int rv; \
149 mutex_enter(softnet_lock); \
150 rv = name(mp, offp, proto); \
151 mutex_exit(softnet_lock); \
152 return rv; \
153}
154#endif
155
156extern const struct ip6protosw inet6sw[];
157
158#endif /* !_NETINET6_IP6PROTOSW_H_ */