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 /* LLC and SNAP constants */ 38 #define EXTENDED_SAP 0xAA 39 #define UI_CMD 0x03 40 41 /* This is an Token-Ring frame header. */ 42 struct trh_hdr { 43 __u8 ac; /* access control field */ 44 __u8 fc; /* frame control field */ 45 __u8 daddr[TR_ALEN]; /* destination address */ 46 __u8 saddr[TR_ALEN]; /* source address */ 47 __u16 rcf; /* route control field */ 48 __u16 rseg[8]; /* routing registers */ 49 }; 50 51 /* This is an Token-Ring LLC structure */ 52 struct trllc { 53 __u8 dsap; /* destination SAP */ 54 __u8 ssap; /* source SAP */ 55 __u8 llc; /* LLC control field */ 56 __u8 protid[3]; /* protocol id */ 57 __u16 ethertype; /* ether type field */ 58 }; 59 60 /* Token-Ring statistics collection data. */ 61 struct tr_statistics { 62 unsigned long rx_packets; /* total packets received */ 63 unsigned long tx_packets; /* total packets transmitted */ 64 unsigned long rx_bytes; /* total bytes received */ 65 unsigned long tx_bytes; /* total bytes transmitted */ 66 unsigned long rx_errors; /* bad packets received */ 67 unsigned long tx_errors; /* packet transmit problems */ 68 unsigned long rx_dropped; /* no space in linux buffers */ 69 unsigned long tx_dropped; /* no space available in linux */ 70 unsigned long multicast; /* multicast packets received */ 71 unsigned long transmit_collision; 72 73 /* detailed Token-Ring errors. See IBM Token-Ring Network 74 Architecture for more info */ 75 76 unsigned long line_errors; 77 unsigned long internal_errors; 78 unsigned long burst_errors; 79 unsigned long A_C_errors; 80 unsigned long abort_delimiters; 81 unsigned long lost_frames; 82 unsigned long recv_congest_count; 83 unsigned long frame_copied_errors; 84 unsigned long frequency_errors; 85 unsigned long token_errors; 86 unsigned long dummy1; 87 }; 88 89 /* source routing stuff */ 90 91 #define TR_RII 0x80 92 #define TR_RCF_DIR_BIT 0x80 93 #define TR_RCF_LEN_MASK 0x1f00 94 #define TR_RCF_BROADCAST 0x8000 /* all-routes broadcast */ 95 #define TR_RCF_LIMITED_BROADCAST 0xC000 /* single-route broadcast */ 96 #define TR_RCF_FRAME2K 0x20 97 #define TR_RCF_BROADCAST_MASK 0xC000 98 #define TR_MAXRIFLEN 18 99 100 #endif /* _LINUX_IF_TR_H */ 101