105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
/*
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* INET An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Global definitions for the Token-Ring IEEE 802.5 interface.
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*
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* Version: @(#)if_tr.h 0.0 07/11/94
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*
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* Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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* Donald Becker, <becker@super.org>
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* Peter De Schrijver, <stud11@cc4.kuleuven.ac.be>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_IF_TR_H
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#define _LINUX_IF_TR_H
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#include <asm/byteorder.h> /* For __be16 */
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/* IEEE 802.5 Token-Ring magic constants. The frame sizes omit the preamble
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and FCS/CRC (frame check sequence). */
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#define TR_ALEN 6 /* Octets in one token-ring addr */
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#define TR_HLEN (sizeof(struct trh_hdr)+sizeof(struct trllc))
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#define AC 0x10
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#define LLC_FRAME 0x40
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/* LLC and SNAP constants */
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#define EXTENDED_SAP 0xAA
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#define UI_CMD 0x03
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/* This is an Token-Ring frame header. */
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struct trh_hdr {
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__u8 ac; /* access control field */
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__u8 fc; /* frame control field */
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__u8 daddr[TR_ALEN]; /* destination address */
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__u8 saddr[TR_ALEN]; /* source address */
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__be16 rcf; /* route control field */
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__be16 rseg[8]; /* routing registers */
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};
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#ifdef __KERNEL__
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#include <linux/skbuff.h>
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static inline struct trh_hdr *tr_hdr(const struct sk_buff *skb)
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{
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return (struct trh_hdr *)skb->mac.raw;
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}
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#ifdef CONFIG_SYSCTL
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extern struct ctl_table tr_table[];
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#endif
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#endif
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/* This is an Token-Ring LLC structure */
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struct trllc {
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__u8 dsap; /* destination SAP */
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__u8 ssap; /* source SAP */
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__u8 llc; /* LLC control field */
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__u8 protid[3]; /* protocol id */
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__be16 ethertype; /* ether type field */
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};
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/* Token-Ring statistics collection data. */
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struct tr_statistics {
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unsigned long rx_packets; /* total packets received */
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unsigned long tx_packets; /* total packets transmitted */
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unsigned long rx_bytes; /* total bytes received */
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unsigned long tx_bytes; /* total bytes transmitted */
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unsigned long rx_errors; /* bad packets received */
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unsigned long tx_errors; /* packet transmit problems */
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unsigned long rx_dropped; /* no space in linux buffers */
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unsigned long tx_dropped; /* no space available in linux */
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unsigned long multicast; /* multicast packets received */
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unsigned long transmit_collision;
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/* detailed Token-Ring errors. See IBM Token-Ring Network
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Architecture for more info */
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unsigned long line_errors;
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unsigned long internal_errors;
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unsigned long burst_errors;
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unsigned long A_C_errors;
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unsigned long abort_delimiters;
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unsigned long lost_frames;
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unsigned long recv_congest_count;
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unsigned long frame_copied_errors;
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unsigned long frequency_errors;
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unsigned long token_errors;
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unsigned long dummy1;
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};
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/* source routing stuff */
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#define TR_RII 0x80
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#define TR_RCF_DIR_BIT 0x80
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#define TR_RCF_LEN_MASK 0x1f00
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#define TR_RCF_BROADCAST 0x8000 /* all-routes broadcast */
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#define TR_RCF_LIMITED_BROADCAST 0xC000 /* single-route broadcast */
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#define TR_RCF_FRAME2K 0x20
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#define TR_RCF_BROADCAST_MASK 0xC000
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#define TR_MAXRIFLEN 18
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#endif /* _LINUX_IF_TR_H */
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