The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netinet6/ip6protosw.h

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    1 /*-
    2  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. Neither the name of the project nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      $KAME: ip6protosw.h,v 1.25 2001/09/26 06:13:03 keiichi Exp $
   30  */
   31 
   32 /*-
   33  * Copyright (c) 1982, 1986, 1993
   34  *      The Regents of the University of California.  All rights reserved.
   35  *
   36  * Redistribution and use in source and binary forms, with or without
   37  * modification, are permitted provided that the following conditions
   38  * are met:
   39  * 1. Redistributions of source code must retain the above copyright
   40  *    notice, this list of conditions and the following disclaimer.
   41  * 2. Redistributions in binary form must reproduce the above copyright
   42  *    notice, this list of conditions and the following disclaimer in the
   43  *    documentation and/or other materials provided with the distribution.
   44  * 4. Neither the name of the University nor the names of its contributors
   45  *    may be used to endorse or promote products derived from this software
   46  *    without specific prior written permission.
   47  *
   48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   58  * SUCH DAMAGE.
   59  *
   60  *      @(#)protosw.h   8.1 (Berkeley) 6/2/93
   61  *      BSDI protosw.h,v 2.3 1996/10/11 16:02:40 pjd Exp
   62  * $FreeBSD: releng/10.2/sys/netinet6/ip6protosw.h 241916 2012-10-22 21:49:56Z delphij $
   63  */
   64 
   65 #ifndef _NETINET6_IP6PROTOSW_H_
   66 #define _NETINET6_IP6PROTOSW_H_
   67 
   68 /*
   69  * Protocol switch table for IPv6.
   70  * All other definitions should refer to sys/protosw.h
   71  */
   72 
   73 struct mbuf;
   74 struct sockaddr;
   75 struct socket;
   76 struct domain;
   77 struct thread;
   78 struct ip6_hdr;
   79 struct icmp6_hdr;
   80 struct in6_addr;
   81 struct pr_usrreqs;
   82 
   83 /*
   84  * argument type for the last arg of pr_ctlinput().
   85  * should be consulted only with AF_INET6 family.
   86  *
   87  * IPv6 ICMP IPv6 [exthdrs] finalhdr payload
   88  * ^    ^    ^              ^
   89  * |    |    ip6c_ip6       ip6c_off
   90  * |    ip6c_icmp6
   91  * ip6c_m
   92  *
   93  * ip6c_finaldst usually points to ip6c_ip6->ip6_dst.  if the original
   94  * (internal) packet carries a routing header, it may point the final
   95  * dstination address in the routing header.
   96  *
   97  * ip6c_src: ip6c_ip6->ip6_src + scope info + flowlabel in ip6c_ip6
   98  *      (beware of flowlabel, if you try to compare it against others)
   99  * ip6c_dst: ip6c_finaldst + scope info
  100  */
  101 struct ip6ctlparam {
  102         struct mbuf *ip6c_m;            /* start of mbuf chain */
  103         struct icmp6_hdr *ip6c_icmp6;   /* icmp6 header of target packet */
  104         struct ip6_hdr *ip6c_ip6;       /* ip6 header of target packet */
  105         int ip6c_off;                   /* offset of the target proto header */
  106         struct sockaddr_in6 *ip6c_src;  /* srcaddr w/ additional info */
  107         struct sockaddr_in6 *ip6c_dst;  /* (final) dstaddr w/ additional info */
  108         struct in6_addr *ip6c_finaldst; /* final destination address */
  109         void *ip6c_cmdarg;              /* control command dependent data */
  110         u_int8_t ip6c_nxt;              /* final next header field */
  111 };
  112 
  113 struct ip6protosw {
  114         short   pr_type;                /* socket type used for */
  115         struct  domain *pr_domain;      /* domain protocol a member of */
  116         short   pr_protocol;            /* protocol number */
  117         short   pr_flags;               /* see below */
  118 
  119 /* protocol-protocol hooks */
  120         int     (*pr_input)             /* input to protocol (from below) */
  121                         (struct mbuf **, int *, int);
  122         int     (*pr_output)            /* output to protocol (from above) */
  123                         (struct mbuf *, ...);
  124         void    (*pr_ctlinput)          /* control input (from below) */
  125                         (int, struct sockaddr *, void *);
  126         int     (*pr_ctloutput)         /* control output (from above) */
  127                         (struct socket *, struct sockopt *);
  128 
  129 /* utility hooks */
  130         void    (*pr_init)              /* initialization hook */
  131                         (void);
  132         void    (*pr_destroy)           /* cleanup 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         struct  pr_usrreqs *pr_usrreqs; /* supersedes pr_usrreq() */
  142 };
  143 
  144 #ifdef _KERNEL
  145 extern struct ip6protosw inet6sw[];
  146 #endif
  147 
  148 #endif /* !_NETINET6_IP6PROTOSW_H_ */

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