sys/netinet6/ip6protosw.h

   1 /*      $NetBSD: ip6protosw.h,v 1.20 2008/04/24 11:38:38 ad 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
  75 struct mbuf;
  76 struct sockaddr;
  77 struct socket;
  78 struct domain;
  79 struct proc;
  80 struct ip6_hdr;
  81 struct icmp6_hdr;
  82 struct 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 paylaod
  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  * dstination 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  */
 102 struct 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
 114 struct 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         int     (*pr_output)            /* output to protocol (from above) */
 124                         (struct mbuf *, struct socket *, struct sockaddr_in6 *,
 125                          struct mbuf *);
 126         void    *(*pr_ctlinput)         /* control input (from below) */
 127                         (int, const struct sockaddr *, void *);
 128         int     (*pr_ctloutput)         /* control output (from above) */
 129                         (int, struct socket *, struct sockopt *);
 130
 131 /* user-protocol hook */
 132         int     (*pr_usrreq)            /* user request: see list below */
 133                         (struct socket *, int, struct mbuf *,
 134                              struct mbuf *, struct mbuf *, struct lwp *);
 135
 136 /* utility hooks */
 137         void    (*pr_init)              /* initialization hook */
 138                         (void);
 139
 140         void    (*pr_fasttimo)          /* fast timeout (200ms) */
 141                         (void);
 142         void    (*pr_slowtimo)          /* slow timeout (500ms) */
 143                         (void);
 144         void    (*pr_drain)             /* flush any excess space possible */
 145                         (void);
 146 };
 147
 148 extern const struct ip6protosw inet6sw[];
 149
 150 #endif /* !_NETINET6_IP6PROTOSW_H_ */