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