sys/netiso/esis.h

   1 /*      $NetBSD: esis.h,v 1.22 2007/07/19 20:48:59 dyoung Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1991, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      @(#)esis.h      8.1 (Berkeley) 6/10/93
  32  */
  33
  34 /***********************************************************
  35                 Copyright IBM Corporation 1987
  36
  37                       All Rights Reserved
  38
  39 Permission to use, copy, modify, and distribute this software and its
  40 documentation for any purpose and without fee is hereby granted,
  41 provided that the above copyright notice appear in all copies and that
  42 both that copyright notice and this permission notice appear in
  43 supporting documentation, and that the name of IBM not be
  44 used in advertising or publicity pertaining to distribution of the
  45 software without specific, written prior permission.
  46
  47 IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
  48 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
  49 IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
  50 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  51 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
  52 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  53 SOFTWARE.
  54
  55 ******************************************************************/
  56
  57 /*
  58  * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
  59  */
  60
  61 #ifndef _NETISO_ESIS_H_
  62 #define _NETISO_ESIS_H_
  63
  64 #include <machine/endian.h>
  65
  66 #define SNPAC_AGE               60      /* seconds */
  67 #define ESIS_CONFIG             60      /* seconds */
  68 #define ESIS_HT                 (ESIS_CONFIG * 2)
  69
  70 /*
  71  *      Fixed part of an ESIS header
  72  */
  73 struct esis_fixed {
  74         u_char          esis_proto_id;  /* network layer protocol identifier */
  75         u_char          esis_hdr_len;   /* length indicator (octets) */
  76         u_char          esis_vers;      /* version/protocol identifier
  77                                          * extension */
  78         u_char          esis_res1;      /* reserved */
  79         u_char          esis_type;      /* type code */
  80         /* technically, type should be &='d 0x1f */
  81 #define ESIS_ESH        0x02    /* End System Hello */
  82 #define ESIS_ISH        0x04    /* Intermediate System Hello */
  83 #define ESIS_RD         0x06    /* Redirect */
  84         u_char          esis_ht_msb;    /* holding time (seconds) high byte */
  85         u_char          esis_ht_lsb;    /* holding time (seconds) low byte */
  86         u_char          esis_cksum_msb; /* checksum high byte */
  87         u_char          esis_cksum_lsb; /* checksum low byte */
  88 } __packed;
  89 /*
  90  * Values for ESIS datagram options
  91  */
  92 #define ESISOVAL_NETMASK        0xe1    /* address mask option, RD PDU only */
  93 #define ESISOVAL_SNPAMASK       0xe2    /* snpa mask option, RD PDU only */
  94 #define ESISOVAL_ESCT           0xc6    /* end system conf. timer, ISH PDU
  95                                          * only */
  96
  97
  98 #define ESIS_CKSUM_OFF          0x07
  99 #define ESIS_CKSUM_REQUIRED(pdu)\
 100         ((pdu->esis_cksum_msb != 0) || (pdu->esis_cksum_lsb != 0))
 101
 102 #define ESIS_VERSION    1
 103
 104 struct esis_stat {
 105         u_short         es_nomem;       /* insufficient memory to send hello */
 106         u_short         es_badcsum;     /* incorrect checksum */
 107         u_short         es_badvers;     /* incorrect version number */
 108         u_short         es_badtype;     /* unknown pdu type field */
 109         u_short         es_toosmall;    /* packet too small */
 110         u_short         es_eshsent;     /* ESH sent */
 111         u_short         es_eshrcvd;     /* ESH rcvd */
 112         u_short         es_ishsent;     /* ISH sent */
 113         u_short         es_ishrcvd;     /* ISH rcvd */
 114         u_short         es_rdsent;      /* RD sent */
 115         u_short         es_rdrcvd;      /* RD rcvd */
 116 };
 117
 118 #ifdef  _KERNEL
 119 extern struct esis_stat esis_stat;
 120 extern short esis_holding_time;
 121 extern short esis_config_time;
 122 extern short esis_esconfig_time;
 123 struct socket;
 124 struct mbuf;
 125 struct snpa_hdr;
 126 struct clnp_optidx;
 127 struct iso_addr;
 128 struct rtentry;
 129 struct sockaddr_dl;
 130
 131 void esis_init (void);
 132 int esis_usrreq (struct socket *, int, struct mbuf *, struct mbuf *,
 133                      struct mbuf *, struct lwp *);
 134 void esis_input (struct mbuf *, ...);
 135 void esis_rdoutput (struct snpa_hdr *, struct mbuf *, struct clnp_optidx *,
 136                         struct iso_addr *, struct rtentry *);
 137 int esis_insert_addr (void **, int *, const struct iso_addr *, struct mbuf *,
 138                           int);
 139 void esis_eshinput (struct mbuf *, struct snpa_hdr *);
 140 void esis_ishinput (struct mbuf *, struct snpa_hdr *);
 141 void esis_rdinput (struct mbuf *, struct snpa_hdr *);
 142 void esis_config (void *);
 143 void esis_shoutput (struct ifnet *, int, int, const void *, int,
 144                        struct iso_addr *);
 145 void isis_input (struct mbuf *, ...);
 146 int isis_output (struct mbuf *, ...);
 147 void *esis_ctlinput(int, const struct sockaddr *, void *);
 148 #endif /* _KERNEL */
 149
 150 #endif /* !_NETISO_ESIS_H_ */