bsd/netat/ddp.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  *
  24  * ORIGINS: 82
  25  *
  26  * (C) COPYRIGHT Apple Computer, Inc. 1992-1996
  27  * All Rights Reserved
  28  *
  29  */
  30
  31 #ifndef _NETAT_DDP_H_
  32 #define _NETAT_DDP_H_
  33
  34 /* Header and data sizes */
  35
  36 #define  DDP_HDR_SIZE                 5  /* DDP (short) header size */
  37 #define  DDP_X_HDR_SIZE              13  /* DDP extended header size */
  38 #define  DDP_DATA_SIZE              586  /* Maximum DataGram data size */
  39 #define  DDP_DATAGRAM_SIZE          599  /* Maximum DataGram size */
  40
  41 /* DDP socket definitions */
  42
  43 #define  DDP_SOCKET_1st_RESERVED      1  /* First in reserved range */
  44 #define  DDP_SOCKET_1st_EXPERIMENTAL 64  /* First in experimental range */
  45 #define  DDP_SOCKET_1st_DYNAMIC     128  /* First in dynamic range */
  46 #define  DDP_SOCKET_LAST            253  /* Last socket in any range */
  47
  48 /* DDP type used to replace "0" on packets sent out, for compatibility
  49    with Open Transport */
  50 #define DEFAULT_OT_DDPTYPE 11
  51
  52 /* DDP well-known sockets */
  53
  54 #define RTMP_SOCKET     1       /* RTMP socket number   */
  55 #define NBP_SOCKET      2       /* NIS socket number */
  56 #define EP_SOCKET       4       /* EP socket number */
  57 #define ZIP_SOCKET      6       /* ZIP socket number */
  58
  59 /* DDP extended header packet format */
  60
  61 typedef struct {
  62         unsigned   unused:2,
  63                    hopcount:4,
  64                    length:10;           /* Datagram length */
  65         ua_short   checksum;            /* Checksum */
  66         at_net     dst_net;             /* Destination network number */
  67         at_net     src_net;             /* Source network number */
  68         at_node    dst_node;            /* Destination node ID */
  69         at_node    src_node;            /* Source node ID */
  70         at_socket  dst_socket;          /* Destination socket number */
  71         at_socket  src_socket;          /* Source socket number */
  72         u_char     type;                /* Protocol type */
  73         char       data[DDP_DATA_SIZE];
  74 } at_ddp_t;
  75
  76
  77 #define DDPLEN_ASSIGN(ddp, len)         ddp->length = len
  78 #define DDPLEN_VALUE(ddp)               ddp->length
  79
  80
  81 /* DDP module statistics and configuration */
  82
  83 typedef struct at_ddp_stats {
  84         /* General */
  85
  86         /* Receive stats */
  87         u_int   rcv_bytes;
  88         u_int   rcv_packets;
  89         u_int   rcv_bad_length;
  90         u_int   rcv_unreg_socket;
  91         u_int   rcv_bad_socket;
  92         u_int   rcv_bad_checksum;
  93         u_int   rcv_dropped_nobuf;
  94
  95         /* Transmit stats */
  96         u_int   xmit_bytes;
  97         u_int   xmit_packets;
  98         u_int   xmit_BRT_used;
  99         u_int   xmit_bad_length;
 100         u_int   xmit_bad_addr;
 101         u_int   xmit_dropped_nobuf;
 102 } at_ddp_stats_t;
 103
 104 /* DDP streams module ioctls */
 105
 106 #define AT_MID_DDP      203
 107
 108 #define DDP_IOC_MYIOCTL(i)      ((i>>8) == AT_MID_DDP)
 109 #define DDP_IOC_GET_CFG         ((AT_MID_DDP<<8) | 1)
 110
 111 #ifdef NOT_USED
 112 #define DDP_IOC_BIND_SOCK       ((AT_MID_DDP<<8) | 2)
 113 #define DDP_IOC_GET_STATS       ((AT_MID_DDP<<8) | 3)
 114 #define DDP_IOC_LSTATUS_TABLE   ((AT_MID_DDP<<8) | 4)
 115 #define DDP_IOC_ULSTATUS_TABLE  ((AT_MID_DDP<<8) | 5)
 116 #define DDP_IOC_RSTATUS_TABLE   ((AT_MID_DDP<<8) | 6)
 117 #define DDP_IOC_SET_WROFF       ((AT_MID_DDP<<8) | 7 )
 118 #define DDP_IOC_SET_OPTS        ((AT_MID_DDP<<8) | 8 )
 119 #define DDP_IOC_GET_OPTS        ((AT_MID_DDP<<8) | 9 )
 120 #define DDP_IOC_GET_SOCK        ((AT_MID_DDP<<8) | 10)
 121 #define DDP_IOC_GET_PEER        ((AT_MID_DDP<<8) | 11)
 122 #define DDP_IOC_SET_PEER        ((AT_MID_DDP<<8) | 12)
 123 #define DDP_IOC_SET_PROTO       ((AT_MID_DDP<<8) | 13)
 124 #endif
 125
 126 #ifdef KERNEL
 127
 128 #define DDP_MIN_NETWORK         0x0001
 129 #define DDP_MAX_NETWORK         0xfffe
 130 #define DDP_STARTUP_LOW         0xff00
 131 #define DDP_STARTUP_HIGH        DDP_MAX_NETWORK
 132
 133 typedef struct {
 134         void **inputQ;
 135         int  *pidM;
 136         char  **socketM;
 137         char  *dbgBits;
 138 } proto_reg_t;
 139
 140 /* *** note: this counts on the src address always being that of the
 141        home port
 142    *** */
 143 #define FROM_US(ddp)    ((NET_VALUE(ddp->src_net) ==\
 144         ifID_home->ifThisNode.s_net) && \
 145         ifID_home->ifThisNode.s_node == ddp->src_node)
 146
 147 #define RT_LOOKUP_OKAY(ifID, ddp) \
 148      ((ROUTING_MODE && ifID->ifRoutingState==PORT_ONLINE) || \
 149       (MULTIHOME_MODE && FROM_US(ddp)))
 150
 151 #ifdef NOT_YET
 152 /* from sys_glue.c */
 153 int ddp_adjmsg(gbuf_t *m, int len);
 154 gbuf_t *ddp_growmsg(gbuf_t  *mp, int len);
 155
 156 /* from ddp.c */
 157 int ddp_add_if(at_ifaddr_t *ifID);
 158 int ddp_rem_if(at_ifaddr_t *ifID);
 159 int ddp_bind_socket(ddp_socket_t *socketp);
 160 int ddp_close_socket(ddp_socket_t *socketp);
 161 int ddp_output(gbuf_t **mp, at_socket src_socket, int src_addr_included);
 162 void ddp_input(gbuf_t   *mp, at_ifaddr_t *ifID);
 163 int ddp_router_output(
 164      gbuf_t  *mp,
 165      at_ifaddr_t *ifID,
 166      int addr_type,
 167      at_net_al router_net,
 168      at_node router_node,
 169      etalk_addr_t *enet_addr);
 170
 171 /* from ddp_proto.c */
 172 int ddp_close(gref_t *gref);
 173 void ddp_putmsg(gref_t *gref, gbuf_t *mp);
 174 gbuf_t *ddp_compress_msg(gbuf_t *mp);
 175 void ddp_stop(gbuf_t *mioc, gref_t *gref);
 176
 177 /* in ddp_lap.c */
 178 void ddp_bit_reverse(unsigned char *);
 179
 180 #endif /* NOT_YET */
 181
 182 /* in ddp_lap.c */
 183 int ddp_shutdown(int);
 184
 185 #endif /* KERNEL */
 186 #endif /* _NETAT_DDP_H_ */