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 #include <linux/types.h>
23 #include <asm/byteorder.h> /* For __be16 */
25 /* IEEE 802.5 Token-Ring magic constants. The frame sizes omit the preamble
26 and FCS/CRC (frame check sequence). */
27 #define TR_ALEN 6 /* Octets in one token-ring addr */
28 #define TR_HLEN (sizeof(struct trh_hdr)+sizeof(struct trllc))
30 #define LLC_FRAME 0x40
32 /* LLC and SNAP constants */
33 #define EXTENDED_SAP 0xAA
36 /* This is an Token-Ring frame header. */
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 */
42 __be16 rcf
; /* route control field */
43 __be16 rseg
[8]; /* routing registers */
47 #include <linux/skbuff.h>
49 static inline struct trh_hdr
*tr_hdr(const struct sk_buff
*skb
)
51 return (struct trh_hdr
*)skb_mac_header(skb
);
55 /* This is an Token-Ring LLC structure */
57 __u8 dsap
; /* destination SAP */
58 __u8 ssap
; /* source SAP */
59 __u8 llc
; /* LLC control field */
60 __u8 protid
[3]; /* protocol id */
61 __be16 ethertype
; /* ether type field */
64 /* Token-Ring statistics collection data. */
65 struct 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
;
77 /* detailed Token-Ring errors. See IBM Token-Ring Network
78 Architecture for more info */
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
;
93 /* source routing stuff */
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
103 #endif /* _LINUX_IF_TR_H */
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