usr.sbin/IPXrouted/sap.h

   1 /*
   2  * Copyright (c) 1995 John Hay.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  * 3. All advertising materials mentioning features or use of this software
  13  *    must display the following acknowledgement:
  14  *      This product includes software developed by John Hay.
  15  * 4. Neither the name of the author nor the names of any co-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 John Hay 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 John Hay 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  * $FreeBSD: src/usr.sbin/IPXrouted/sap.h,v 1.7 1999/08/28 01:15:03 peter Exp $
  32  * $DragonFly: src/usr.sbin/IPXrouted/sap.h,v 1.2 2003/06/17 04:29:52 dillon Exp $
  33  */
  34 #ifndef _SAP_H_
  35 #define _SAP_H_
  36
  37 #define SAP_REQ                 1
  38 #define SAP_RESP                2
  39 #define SAP_REQ_NEAR            3
  40 #define SAP_RESP_NEAR           4
  41
  42 #define SAPCMD_MAX              5
  43 #ifdef SAPCMDS
  44 char *sapcmds[SAPCMD_MAX] =
  45         { "#0", "REQUEST", "RESPONSE", "REQ NEAREST", "RESP NEAREST"};
  46 #endif
  47
  48 #define MAXSAPENTRIES           7
  49 #define SAP_WILDCARD            0xFFFF
  50 #define SERVNAMELEN             48
  51 typedef struct sap_info {
  52         u_short ServType;
  53         char    ServName[SERVNAMELEN];
  54         struct ipx_addr ipx;
  55         u_short hops;
  56         }sap_info;
  57
  58 typedef struct sap_packet {
  59         u_short sap_cmd;
  60         sap_info sap[0]; /* Variable length. */
  61         }sap_packet;
  62
  63 typedef struct sap_entry {
  64         struct sap_entry *forw;
  65         struct sap_entry *back;
  66         struct sap_entry *clone;
  67         struct interface *ifp;
  68         struct sap_info   sap;
  69         struct sockaddr   source;
  70         int hash;
  71         int state;
  72         int timer;
  73         }sap_entry;
  74
  75 #define SAPHASHSIZ              256             /* Should be a power of 2 */
  76 #define SAPHASHMASK             (SAPHASHSIZ-1)
  77 typedef struct sap_hash {
  78         struct sap_entry *forw;
  79         struct sap_entry *back;
  80         }sap_hash;
  81
  82 extern sap_hash sap_head[SAPHASHSIZ];
  83
  84 extern struct   sap_packet *sap_msg;
  85
  86 void sapinit(void);
  87 void sap_input(struct sockaddr *from, int size);
  88 void sapsndmsg(struct sockaddr *dst, int flags, struct interface *ifp,
  89                 int changesonly);
  90 void sap_supply_toall(int changesonly);
  91 void sap_supply(struct sockaddr *dst,
  92                 int flags,
  93                 struct interface *ifp,
  94                 int ServType,
  95                 int changesonly);
  96
  97 struct sap_entry *sap_lookup(u_short ServType, char *ServName);
  98 struct sap_entry *sap_nearestserver(ushort ServType, struct interface *ifp);
  99 void sap_add(struct sap_info *si, struct sockaddr *from);
 100 void sap_change(struct sap_entry *sap,
 101                 struct sap_info *si,
 102                 struct sockaddr *from);
 103 void sap_add_clone(struct sap_entry *sap,
 104                    struct sap_info *clone,
 105                    struct sockaddr *from);
 106 void sap_delete(struct sap_entry *sap);
 107
 108 #endif /*_SAP_H_*/
 109