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#include <linux/types.h> 23#include <asm/byteorder.h> /* For __be16 */ 24 25/* IEEE 802.5 Token-Ring magic constants. The frame sizes omit the preamble 26 and FCS/CRC (frame check sequence). */ 27#define TR_ALEN 6 /* Octets in one token-ring addr */ 28#define TR_HLEN (sizeof(struct trh_hdr)+sizeof(struct trllc)) 29#define AC 0x10 30#define LLC_FRAME 0x40 31 32/* LLC and SNAP constants */ 33#define EXTENDED_SAP 0xAA 34#define UI_CMD 0x03 35 36/* This is an Token-Ring frame header. */ 37struct trh_hdr { 38 __u8 ac; /* access control field */ 39 __u8 fc; /* frame control field */ 40 __u8 daddr[TR_ALEN]; /* destination address */ 41 __u8 saddr[TR_ALEN]; /* source address */ 42 __be16 rcf; /* route control field */ 43 __be16 rseg[8]; /* routing registers */ 44}; 45 46 47/* This is an Token-Ring LLC structure */ 48struct trllc { 49 __u8 dsap; /* destination SAP */ 50 __u8 ssap; /* source SAP */ 51 __u8 llc; /* LLC control field */ 52 __u8 protid[3]; /* protocol id */ 53 __be16 ethertype; /* ether type field */ 54}; 55 56/* Token-Ring statistics collection data. */ 57struct tr_statistics { 58 unsigned long rx_packets; /* total packets received */ 59 unsigned long tx_packets; /* total packets transmitted */ 60 unsigned long rx_bytes; /* total bytes received */ 61 unsigned long tx_bytes; /* total bytes transmitted */ 62 unsigned long rx_errors; /* bad packets received */ 63 unsigned long tx_errors; /* packet transmit problems */ 64 unsigned long rx_dropped; /* no space in linux buffers */ 65 unsigned long tx_dropped; /* no space available in linux */ 66 unsigned long multicast; /* multicast packets received */ 67 unsigned long transmit_collision; 68 69 /* detailed Token-Ring errors. See IBM Token-Ring Network 70 Architecture for more info */ 71 72 unsigned long line_errors; 73 unsigned long internal_errors; 74 unsigned long burst_errors; 75 unsigned long A_C_errors; 76 unsigned long abort_delimiters; 77 unsigned long lost_frames; 78 unsigned long recv_congest_count; 79 unsigned long frame_copied_errors; 80 unsigned long frequency_errors; 81 unsigned long token_errors; 82 unsigned long dummy1; 83}; 84 85/* source routing stuff */ 86#define TR_RII 0x80 87#define TR_RCF_DIR_BIT 0x80 88#define TR_RCF_LEN_MASK 0x1f00 89#define TR_RCF_BROADCAST 0x8000 /* all-routes broadcast */ 90#define TR_RCF_LIMITED_BROADCAST 0xC000 /* single-route broadcast */ 91#define TR_RCF_FRAME2K 0x20 92#define TR_RCF_BROADCAST_MASK 0xC000 93#define TR_MAXRIFLEN 18 94 95#endif /* _LINUX_IF_TR_H */ 96