1 /* $FreeBSD: src/sys/netinet6/ip6protosw.h,v 1.12.2.1 2005/01/31 23:26:39 imp Exp $ */
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
75 struct mbuf;
76 struct sockaddr;
77 struct socket;
78 struct domain;
79 struct thread;
80 struct ip6_hdr;
81 struct icmp6_hdr;
82 struct in6_addr;
83 struct 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 */
103 struct 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
115 struct 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
150 extern struct ip6protosw inet6sw[];
151 #endif
152
153 #endif /* !_NETINET6_IP6PROTOSW_H_ */
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