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Annotation of kernel/bsd/netat/at/ddp.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
                      3:  *
                      4:  * @APPLE_LICENSE_HEADER_START@
                      5:  * 
                      6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
                      7:  * Reserved.  This file contains Original Code and/or Modifications of
                      8:  * Original Code as defined in and that are subject to the Apple Public
                      9:  * Source License Version 1.1 (the "License").  You may not use this file
                     10:  * except in compliance with the License.  Please obtain a copy of the
                     11:  * License at http://www.apple.com/publicsource and read it before using
                     12:  * this file.
                     13:  * 
                     14:  * The Original Code and all software distributed under the License are
                     15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
                     16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
                     17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
                     18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
                     19:  * License for the specific language governing rights and limitations
                     20:  * under the License.
                     21:  * 
                     22:  * @APPLE_LICENSE_HEADER_END@
                     23:  */
                     24: 
                     25: /*
                     26:  *
                     27:  * ORIGINS: 82
                     28:  *
                     29:  * APPLE CONFIDENTIAL
                     30:  * (C) COPYRIGHT Apple Computer, Inc. 1992-1996
                     31:  * All Rights Reserved
                     32:  *
                     33:  */                                                                   
                     34: 
                     35: #ifndef __DDP__
                     36: #define __DDP__
                     37: 
                     38: /* Header and data sizes */
                     39: 
                     40: #define  DDP_HDR_SIZE                 5  /* DDP (short) header size */
                     41: #define  DDP_X_HDR_SIZE              13  /* DDP extended header size */
                     42: #define  DDP_DATA_SIZE              586  /* Maximum DataGram data size */
                     43: #define  DDP_DATAGRAM_SIZE          599  /* Maximum DataGram size */
                     44: 
                     45: 
                     46: /* DDP socket definitions */
                     47: 
                     48: #define  DDP_SOCKET_1st_RESERVED      1  /* First in reserved range */
                     49: #define  DDP_SOCKET_1st_EXPERIMENTAL 64  /* First in experimental range */
                     50: #define  DDP_SOCKET_1st_DYNAMIC     128  /* First in dynamic range */
                     51: #define  DDP_SOCKET_LAST            253  /* Last socket in any range */
                     52: 
                     53: 
                     54: /* DDP extended header packet format */
                     55: 
                     56: typedef struct {
                     57:         unsigned   unused:2,
                     58:                   hopcount:4,
                     59:                   length:10;           /* Datagram length */
                     60:         ua_short   checksum;           /* Checksum */
                     61:         at_net     dst_net;            /* Destination network number */
                     62:         at_net     src_net;            /* Source network number */
                     63:         at_node    dst_node;           /* Destination node ID */
                     64:         at_node    src_node;           /* Source node ID */
                     65:         at_socket  dst_socket;                 /* Destination socket number */
                     66:         at_socket  src_socket;                 /* Source socket number */
                     67:         u_char    type;                /* Protocol type */
                     68:         char       data[DDP_DATA_SIZE];
                     69: } at_ddp_t;
                     70: 
                     71: 
                     72: #define        DDPLEN_ASSIGN(ddp, len)         ddp->length = len
                     73: #define        DDPLEN_VALUE(ddp)               ddp->length
                     74: 
                     75: 
                     76: /* DDP module statistics and configuration */
                     77: 
                     78: typedef struct {
                     79:        /* General */
                     80: 
                     81:        /* Receive stats */
                     82:        u_int   rcv_bytes;
                     83:        u_int   rcv_packets;
                     84:        u_int   rcv_bad_length;
                     85:        u_int   rcv_unreg_socket;
                     86:        u_int   rcv_bad_socket;
                     87:        u_int   rcv_bad_checksum;
                     88:        u_int   rcv_dropped_nobuf;
                     89: 
                     90:        /* Transmit stats */
                     91:        u_int   xmit_bytes;
                     92:        u_int   xmit_packets;
                     93:        u_int   xmit_BRT_used;
                     94:        u_int   xmit_bad_length;
                     95:        u_int   xmit_bad_addr;
                     96:        u_int   xmit_dropped_nobuf;
                     97: } at_ddp_stats_t;
                     98: 
                     99: typedef struct {
                    100:         u_short        network_up;
                    101:        u_short         filler;
                    102:        int             flags;          /* to indicate what type
                    103:                                         * of network interface the
                    104:                                         * default net is (ethertalk/
                    105:                                         * localtalk?)
                    106:                                         */
                    107:        at_inet_t       node_addr;
                    108:        at_inet_t       router_addr;
                    109:        int             netlo;
                    110:        int             nethi;
                    111: } at_ddp_cfg_t;
                    112: 
                    113: union at_ddpopt {
                    114:     struct {
                    115:         unsigned char checksum; /* do checksum */
                    116:         unsigned char type;     /* ddp type */
                    117:     } ct;
                    118: };
                    119: 
                    120: union at_adspopt {
                    121:     struct {
                    122:     u_short sendBlocking;      /* quantum for data packets */
                    123:     u_char sendTimer;          /* send timer in 10-tick intervals */
                    124:     u_char rtmtTimer;          /* retransmit timer in 10-tick intervals */
                    125:     u_char badSeqMax;          /* threshold for sending retransmit advice */
                    126:     u_char useCheckSum;                /* use ddp packet checksum */
                    127:     u_short filler;
                    128:     int newPID;                                /* ### Temp for backward compatibility 02/11/94 */
                    129:     } c;
                    130: };
                    131: 
                    132: #endif /* __DDP__ */

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