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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
Tom Rini03722adc2005-06-13 13:57:10 -070022#include <asm/byteorder.h> /* For __be16 */
23
Linus Torvalds1da177e2005-04-16 15:20:36 -070024/* IEEE 802.5 Token-Ring magic constants. The frame sizes omit the preamble
25 and FCS/CRC (frame check sequence). */
Jon Mason82d15422005-05-23 12:53:14 -070026#define TR_ALEN 6 /* Octets in one token-ring addr */
27#define TR_HLEN (sizeof(struct trh_hdr)+sizeof(struct trllc))
28#define AC 0x10
29#define LLC_FRAME 0x40
Linus Torvalds1da177e2005-04-16 15:20:36 -070030
31/* LLC and SNAP constants */
Jon Mason82d15422005-05-23 12:53:14 -070032#define EXTENDED_SAP 0xAA
33#define UI_CMD 0x03
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
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 */
Alexey Dobriyanc6b33652005-05-26 12:59:05 -070041 __be16 rcf; /* route control field */
42 __be16 rseg[8]; /* routing registers */
Linus Torvalds1da177e2005-04-16 15:20:36 -070043};
44
45#ifdef __KERNEL__
46#include <linux/skbuff.h>
47
48static inline struct trh_hdr *tr_hdr(const struct sk_buff *skb)
49{
Arnaldo Carvalho de Melo98e399f2007-03-19 15:33:04 -070050 return (struct trh_hdr *)skb_mac_header(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -070051}
Arnaldo Carvalho de Melo20380732005-08-16 02:18:02 -030052#ifdef CONFIG_SYSCTL
53extern struct ctl_table tr_table[];
54#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070055#endif
56
57/* This is an Token-Ring LLC structure */
58struct trllc {
59 __u8 dsap; /* destination SAP */
60 __u8 ssap; /* source SAP */
61 __u8 llc; /* LLC control field */
62 __u8 protid[3]; /* protocol id */
Alexey Dobriyanc6b33652005-05-26 12:59:05 -070063 __be16 ethertype; /* ether type field */
Linus Torvalds1da177e2005-04-16 15:20:36 -070064};
65
66/* Token-Ring statistics collection data. */
67struct tr_statistics {
68 unsigned long rx_packets; /* total packets received */
69 unsigned long tx_packets; /* total packets transmitted */
70 unsigned long rx_bytes; /* total bytes received */
71 unsigned long tx_bytes; /* total bytes transmitted */
72 unsigned long rx_errors; /* bad packets received */
73 unsigned long tx_errors; /* packet transmit problems */
74 unsigned long rx_dropped; /* no space in linux buffers */
75 unsigned long tx_dropped; /* no space available in linux */
76 unsigned long multicast; /* multicast packets received */
77 unsigned long transmit_collision;
78
79 /* detailed Token-Ring errors. See IBM Token-Ring Network
80 Architecture for more info */
81
82 unsigned long line_errors;
83 unsigned long internal_errors;
84 unsigned long burst_errors;
85 unsigned long A_C_errors;
86 unsigned long abort_delimiters;
87 unsigned long lost_frames;
88 unsigned long recv_congest_count;
89 unsigned long frame_copied_errors;
90 unsigned long frequency_errors;
91 unsigned long token_errors;
92 unsigned long dummy1;
93};
94
95/* source routing stuff */
Jon Mason82d15422005-05-23 12:53:14 -070096#define TR_RII 0x80
97#define TR_RCF_DIR_BIT 0x80
98#define TR_RCF_LEN_MASK 0x1f00
99#define TR_RCF_BROADCAST 0x8000 /* all-routes broadcast */
100#define TR_RCF_LIMITED_BROADCAST 0xC000 /* single-route broadcast */
101#define TR_RCF_FRAME2K 0x20
102#define TR_RCF_BROADCAST_MASK 0xC000
103#define TR_MAXRIFLEN 18
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104
105#endif /* _LINUX_IF_TR_H */