sys/netinet6/ip6protosw.h

   1 /*      $FreeBSD: src/sys/netinet6/ip6protosw.h,v 1.2.2.4 2002/04/28 05:40:27 suz Exp $ */
   2 /*      $DragonFly: src/sys/netinet6/ip6protosw.h,v 1.8 2007/12/19 11:00:23 sephe Exp $ */
   3 /*      $KAME: ip6protosw.h,v 1.25 2001/09/26 06:13:03 keiichi Exp $    */
   4
   5 /*
   6  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the name of the project nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  */
  34
  35 /*      BSDI protosw.h,v 2.3 1996/10/11 16:02:40 pjd Exp        */
  36
  37 /*-
  38  * Copyright (c) 1982, 1986, 1993
  39  *      The Regents of the University of California.  All rights reserved.
  40  *
  41  * Redistribution and use in source and binary forms, with or without
  42  * modification, are permitted provided that the following conditions
  43  * are met:
  44  * 1. Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  * 2. Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in the
  48  *    documentation and/or other materials provided with the distribution.
  49  * 3. All advertising materials mentioning features or use of this software
  50  *    must display the following acknowledgement:
  51  *      This product includes software developed by the University of
  52  *      California, Berkeley and its contributors.
  53  * 4. Neither the name of the University nor the names of its contributors
  54  *    may be used to endorse or promote products derived from this software
  55  *    without specific prior written permission.
  56  *
  57  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  58  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  59  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  60  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  61  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  62  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  63  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  64  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  65  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  66  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  67  * SUCH DAMAGE.
  68  *
  69  *      @(#)protosw.h   8.1 (Berkeley) 6/2/93
  70  */
  71
  72 #ifndef _NETINET6_IP6PROTOSW_H_
  73 #define _NETINET6_IP6PROTOSW_H_
  74
  75 #ifndef _SYS_TYPES_H_
  76 #include <sys/types.h>
  77 #endif
  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 sockopt;
  88 struct domain;
  89 struct proc;
  90 struct ip6_hdr;
  91 struct icmp6_hdr;
  92 struct in6_addr;
  93 struct pr_usrreqs;
  94
  95 /*
  96  * argument type for the last arg of pr_ctlinput().
  97  * should be consulted only with AF_INET6 family.
  98  *
  99  * IPv6 ICMP IPv6 [exthdrs] finalhdr paylaod
 100  * ^    ^    ^              ^
 101  * |    |    ip6c_ip6       ip6c_off
 102  * |    ip6c_icmp6
 103  * ip6c_m
 104  *
 105  * ip6c_finaldst usually points to ip6c_ip6->ip6_dst.  if the original
 106  * (internal) packet carries a routing header, it may point the final
 107  * dstination address in the routing header.
 108  *
 109  * ip6c_src: ip6c_ip6->ip6_src + scope info + flowlabel in ip6c_ip6
 110  *      (beware of flowlabel, if you try to compare it against others)
 111  * ip6c_dst: ip6c_finaldst + scope info
 112  */
 113 struct ip6ctlparam {
 114         struct mbuf *ip6c_m;            /* start of mbuf chain */
 115         struct icmp6_hdr *ip6c_icmp6;   /* icmp6 header of target packet */
 116         struct ip6_hdr *ip6c_ip6;       /* ip6 header of target packet */
 117         int ip6c_off;                   /* offset of the target proto header */
 118         struct sockaddr_in6 *ip6c_src;  /* srcaddr w/ additional info */
 119         struct sockaddr_in6 *ip6c_dst;  /* (final) dstaddr w/ additional info */
 120         struct in6_addr *ip6c_finaldst; /* final destination address */
 121         void *ip6c_cmdarg;              /* control command dependent data */
 122         u_int8_t ip6c_nxt;              /* final next header field */
 123 };
 124
 125 struct lwkt_port;
 126
 127 struct ip6protosw {
 128         short   pr_type;                /* socket type used for */
 129         const struct    domain *pr_domain; /* domain protocol a member of */
 130         short   pr_protocol;            /* protocol number */
 131         short   pr_flags;               /* see below */
 132
 133 /* protocol-protocol hooks */
 134         int     (*pr_input)             /* input to protocol (from below) */
 135                         (struct mbuf **, int *, int);
 136         int     (*pr_output)            /* output to protocol (from above) */
 137                         (struct mbuf *, struct socket *, ...);
 138         void    (*pr_ctlinput)          /* control input (from below) */
 139                         (int, struct sockaddr *, void *);
 140         int     (*pr_ctloutput)         /* control output (from above) */
 141                         (struct socket *, struct sockopt *);
 142
 143 /* user-protocol hook */
 144         struct lwkt_port *(*pr_soport)
 145                         (struct socket *, struct sockaddr *,
 146                          struct mbuf **, int);
 147
 148 /* utility hooks */
 149         void    (*pr_init)              /* initialization hook */
 150                         (void);
 151
 152         void    (*pr_fasttimo)          /* fast timeout (200ms) */
 153                         (void);
 154         void    (*pr_slowtimo)          /* slow timeout (500ms) */
 155                         (void);
 156         void    (*pr_drain)             /* flush any excess space possible */
 157                         (void);
 158         const struct    pr_usrreqs *pr_usrreqs; /* supersedes pr_usrreq() */
 159 };
 160
 161 #endif /* !_NETINET6_IP6PROTOSW_H_ */