include/linux/if_tr.h

   1 /*
   2  * INET         An implementation of the TCP/IP protocol suite for the LINUX
   3  *              operating system.  INET is implemented using the  BSD Socket
   4  *              interface as the means of communication with the user level.
   5  *
   6  *              Global definitions for the Token-Ring IEEE 802.5 interface.
   7  *
   8  * Version:     @(#)if_tr.h     0.0     07/11/94
   9  *
  10  * Author:      Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  11  *              Donald Becker, <becker@super.org>
  12  *    Peter De Schrijver, <stud11@cc4.kuleuven.ac.be>
  13  *
  14  *              This program is free software; you can redistribute it and/or
  15  *              modify it under the terms of the GNU General Public License
  16  *              as published by the Free Software Foundation; either version
  17  *              2 of the License, or (at your option) any later version.
  18  */
  19 #ifndef _LINUX_IF_TR_H
  20 #define _LINUX_IF_TR_H
  21
  22
  23 /* IEEE 802.5 Token-Ring magic constants.  The frame sizes omit the preamble
  24    and FCS/CRC (frame check sequence). */
  25 #define TR_ALEN 6               /* Octets in one ethernet addr   */
  26 #define TR_HLEN   (sizeof(struct trh_hdr)+sizeof(struct trllc))
  27 #define AC                      0x10
  28 #define LLC_FRAME 0x40
  29 #if 0
  30 #define ETH_HLEN        14              /* Total octets in header.       */
  31 #define ETH_ZLEN        60              /* Min. octets in frame sans FCS */
  32 #define ETH_DATA_LEN    1500            /* Max. octets in payload        */
  33 #define ETH_FRAME_LEN   1514            /* Max. octets in frame sans FCS */
  34 #endif
  35
  36
  37 /* These are some defined Ethernet Protocol ID's. */
  38 /* FIXME: should use the definitions in if_ether.h!!! */
  39 #define ETH_P_IP        0x0800          /* Internet Protocol packet     */
  40 #define ETH_P_ARP       0x0806          /* Address Resolution packet    */
  41 #define ETH_P_RARP      0x8035          /* Reverse Addr Res packet      */
  42
  43 /* LLC and SNAP constants */
  44 #define EXTENDED_SAP 0xAA
  45 #define UI_CMD       0x03
  46
  47 /* This is an Token-Ring frame header. */
  48 struct trh_hdr {
  49         __u8  ac;                       /* access control field */
  50         __u8  fc;                       /* frame control field */
  51         __u8  daddr[TR_ALEN];           /* destination address */
  52         __u8  saddr[TR_ALEN];           /* source address */
  53         __u16 rcf;                      /* route control field */
  54         __u16 rseg[8];                  /* routing registers */
  55 };
  56
  57 /* This is an Token-Ring LLC structure */
  58 struct trllc {
  59         __u8  dsap;                     /* destination SAP */
  60         __u8  ssap;                     /* source SAP */
  61         __u8  llc;                      /* LLC control field */
  62         __u8  protid[3];                /* protocol id */
  63         __u16 ethertype;                /* ether type field */
  64 };
  65
  66 /* Token-Ring statistics collection data. */
  67 struct tr_statistics {
  68         int rx_packets;                 /* total packets received       */
  69         int tx_packets;                 /* total packets transmitted    */
  70         int rx_errors;                  /* bad packets received         */
  71         int tx_errors;                  /* packet transmit problems     */
  72         int rx_dropped;                 /* no space in linux buffers    */
  73         int tx_dropped;                 /* no space available in linux  */
  74         int multicast;                  /* multicast packets received   */
  75         int transmit_collision;
  76
  77         /* detailed Token-Ring errors. See IBM Token-Ring Network
  78            Architecture for more info */
  79
  80         int line_errors;
  81         int internal_errors;
  82         int burst_errors;
  83         int A_C_errors;
  84         int abort_delimiters;
  85         int lost_frames;
  86         int recv_congest_count;
  87         int frame_copied_errors;
  88         int frequency_errors;
  89         int token_errors;
  90         int dummy1;
  91 };
  92
  93 /* source routing stuff */
  94
  95 #define TR_RII 0x80
  96 #define TR_RCF_DIR_BIT 0x80
  97 #define TR_RCF_LEN_MASK 0x1f00
  98 #define TR_RCF_BROADCAST 0x8000         /* all-routes broadcast */
  99 #define TR_RCF_LIMITED_BROADCAST 0xC000 /* single-route broadcast */
 100 #define TR_RCF_FRAME2K 0x20
 101 #define TR_RCF_BROADCAST_MASK 0xC000
 102
 103 #endif  /* _LINUX_IF_TR_H */