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.
6 * Global definitions for the Token-Ring IEEE 802.5 interface.
8 * Version: @(#)if_tr.h 0.0 07/11/94
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>
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.
19 #ifndef _LINUX_IF_TR_H
20 #define _LINUX_IF_TR_H
22 /* IEEE 802.5 Token-Ring magic constants. The frame sizes omit the preamble
23 and FCS/CRC (frame check sequence). */
24 #define TR_ALEN 6 /* Octets in one token-ring addr */
25 #define TR_HLEN (sizeof(struct trh_hdr)+sizeof(struct trllc))
27 #define LLC_FRAME 0x40
29 /* LLC and SNAP constants */
30 #define EXTENDED_SAP 0xAA
33 /* This is an Token-Ring frame header. */
35 __u8 ac; /* access control field */
36 __u8 fc; /* frame control field */
37 __u8 daddr[TR_ALEN]; /* destination address */
38 __u8 saddr[TR_ALEN]; /* source address */
39 __u16 rcf; /* route control field */
40 __u16 rseg[8]; /* routing registers */
44 #include <linux/skbuff.h>
46 static inline struct trh_hdr *tr_hdr(const struct sk_buff *skb)
48 return (struct trh_hdr *)skb->mac.raw;
52 /* This is an Token-Ring LLC structure */
54 __u8 dsap; /* destination SAP */
55 __u8 ssap; /* source SAP */
56 __u8 llc; /* LLC control field */
57 __u8 protid[3]; /* protocol id */
58 __u16 ethertype; /* ether type field */
61 /* Token-Ring statistics collection data. */
62 struct tr_statistics {
63 unsigned long rx_packets; /* total packets received */
64 unsigned long tx_packets; /* total packets transmitted */
65 unsigned long rx_bytes; /* total bytes received */
66 unsigned long tx_bytes; /* total bytes transmitted */
67 unsigned long rx_errors; /* bad packets received */
68 unsigned long tx_errors; /* packet transmit problems */
69 unsigned long rx_dropped; /* no space in linux buffers */
70 unsigned long tx_dropped; /* no space available in linux */
71 unsigned long multicast; /* multicast packets received */
72 unsigned long transmit_collision;
74 /* detailed Token-Ring errors. See IBM Token-Ring Network
75 Architecture for more info */
77 unsigned long line_errors;
78 unsigned long internal_errors;
79 unsigned long burst_errors;
80 unsigned long A_C_errors;
81 unsigned long abort_delimiters;
82 unsigned long lost_frames;
83 unsigned long recv_congest_count;
84 unsigned long frame_copied_errors;
85 unsigned long frequency_errors;
86 unsigned long token_errors;
90 /* source routing stuff */
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
100 #endif /* _LINUX_IF_TR_H */