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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Jon Mason82d15422005-05-23 12:53:14 -070012 * Peter De Schrijver, <stud11@cc4.kuleuven.ac.be>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
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
Jaswinder Singh Rajput65863db2009-01-30 21:34:36 +053022#include <linux/types.h>
Tom Rini03722adc2005-06-13 13:57:10 -070023#include <asm/byteorder.h> /* For __be16 */
24
Linus Torvalds1da177e2005-04-16 15:20:36 -070025/* IEEE 802.5 Token-Ring magic constants. The frame sizes omit the preamble
26 and FCS/CRC (frame check sequence). */
Jon Mason82d15422005-05-23 12:53:14 -070027#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
Linus Torvalds1da177e2005-04-16 15:20:36 -070031
32/* LLC and SNAP constants */
Jon Mason82d15422005-05-23 12:53:14 -070033#define EXTENDED_SAP 0xAA
34#define UI_CMD 0x03
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
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 */
Alexey Dobriyanc6b33652005-05-26 12:59:05 -070042 __be16 rcf; /* route control field */
43 __be16 rseg[8]; /* routing registers */
Linus Torvalds1da177e2005-04-16 15:20:36 -070044};
45
46#ifdef __KERNEL__
47#include <linux/skbuff.h>
48
49static inline struct trh_hdr *tr_hdr(const struct sk_buff *skb)
50{
Arnaldo Carvalho de Melo98e399f2007-03-19 15:33:04 -070051 return (struct trh_hdr *)skb_mac_header(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -070052}
53#endif
54
55/* This is an Token-Ring LLC structure */
56struct trllc {
57 __u8 dsap; /* destination SAP */
58 __u8 ssap; /* source SAP */
59 __u8 llc; /* LLC control field */
60 __u8 protid[3]; /* protocol id */
Alexey Dobriyanc6b33652005-05-26 12:59:05 -070061 __be16 ethertype; /* ether type field */
Linus Torvalds1da177e2005-04-16 15:20:36 -070062};
63
64/* Token-Ring statistics collection data. */
65struct tr_statistics {
66 unsigned long rx_packets; /* total packets received */
67 unsigned long tx_packets; /* total packets transmitted */
68 unsigned long rx_bytes; /* total bytes received */
69 unsigned long tx_bytes; /* total bytes transmitted */
70 unsigned long rx_errors; /* bad packets received */
71 unsigned long tx_errors; /* packet transmit problems */
72 unsigned long rx_dropped; /* no space in linux buffers */
73 unsigned long tx_dropped; /* no space available in linux */
74 unsigned long multicast; /* multicast packets received */
75 unsigned long transmit_collision;
76
77 /* detailed Token-Ring errors. See IBM Token-Ring Network
78 Architecture for more info */
79
80 unsigned long line_errors;
81 unsigned long internal_errors;
82 unsigned long burst_errors;
83 unsigned long A_C_errors;
84 unsigned long abort_delimiters;
85 unsigned long lost_frames;
86 unsigned long recv_congest_count;
87 unsigned long frame_copied_errors;
88 unsigned long frequency_errors;
89 unsigned long token_errors;
90 unsigned long dummy1;
91};
92
93/* source routing stuff */
Jon Mason82d15422005-05-23 12:53:14 -070094#define TR_RII 0x80
95#define TR_RCF_DIR_BIT 0x80
96#define TR_RCF_LEN_MASK 0x1f00
97#define TR_RCF_BROADCAST 0x8000 /* all-routes broadcast */
98#define TR_RCF_LIMITED_BROADCAST 0xC000 /* single-route broadcast */
99#define TR_RCF_FRAME2K 0x20
100#define TR_RCF_BROADCAST_MASK 0xC000
101#define TR_MAXRIFLEN 18
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102
103#endif /* _LINUX_IF_TR_H */