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 30 31/* LLC and SNAP constants */ 32#define EXTENDED_SAP 0xAA 33#define UI_CMD 0x03 34 35/* This is an Token-Ring frame header. */ 36struct trh_hdr { 37 __u8 ac; /* access control field */ 38 __u8 fc; /* frame control field */ 39 __u8 daddr[TR_ALEN]; /* destination address */ 40 __u8 saddr[TR_ALEN]; /* source address */ 41 __u16 rcf; /* route control field */ 42 __u16 rseg[8]; /* routing registers */ 43}; 44 45/* This is an Token-Ring LLC structure */ 46struct trllc { 47 __u8 dsap; /* destination SAP */ 48 __u8 ssap; /* source SAP */ 49 __u8 llc; /* LLC control field */ 50 __u8 protid[3]; /* protocol id */ 51 __u16 ethertype; /* ether type field */ 52}; 53 54/* Token-Ring statistics collection data. */ 55struct tr_statistics { 56 unsigned long rx_packets; /* total packets received */ 57 unsigned long tx_packets; /* total packets transmitted */ 58 unsigned long rx_bytes; /* total bytes received */ 59 unsigned long tx_bytes; /* total bytes transmitted */ 60 unsigned long rx_errors; /* bad packets received */ 61 unsigned long tx_errors; /* packet transmit problems */ 62 unsigned long rx_dropped; /* no space in linux buffers */ 63 unsigned long tx_dropped; /* no space available in linux */ 64 unsigned long multicast; /* multicast packets received */ 65 unsigned long transmit_collision; 66 67 /* detailed Token-Ring errors. See IBM Token-Ring Network 68 Architecture for more info */ 69 70 unsigned long line_errors; 71 unsigned long internal_errors; 72 unsigned long burst_errors; 73 unsigned long A_C_errors; 74 unsigned long abort_delimiters; 75 unsigned long lost_frames; 76 unsigned long recv_congest_count; 77 unsigned long frame_copied_errors; 78 unsigned long frequency_errors; 79 unsigned long token_errors; 80 unsigned long dummy1; 81}; 82 83/* source routing stuff */ 84 85#define TR_RII 0x80 86#define TR_RCF_DIR_BIT 0x80 87#define TR_RCF_LEN_MASK 0x1f00 88#define TR_RCF_BROADCAST 0x8000 /* all-routes broadcast */ 89#define TR_RCF_LIMITED_BROADCAST 0xC000 /* single-route broadcast */ 90#define TR_RCF_FRAME2K 0x20 91#define TR_RCF_BROADCAST_MASK 0xC000 92#define TR_MAXRIFLEN 18 93 94#endif /* _LINUX_IF_TR_H */ 95