1 /* $FreeBSD: releng/5.0/sys/netinet6/ip6protosw.h 95023 2002-04-19 04:46:24Z suz $ */
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 * 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
84 struct mbuf;
85 struct sockaddr;
86 struct socket;
87 struct domain;
88 struct thread;
89 struct ip6_hdr;
90 struct icmp6_hdr;
91 struct in6_addr;
92 struct 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 */
112 struct 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
124 struct 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 #ifdef _KERNEL
160 extern struct ip6protosw inet6sw[];
161 #endif
162
163 #endif /* !_NETINET6_IP6PROTOSW_H_ */
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