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1 | /* |
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> |
12 | * Peter De Schrijver, <stud11@cc4.kuleuven.ac.be> |
13 | * |
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 | |
22 | #include <linux/types.h> |
23 | #include <asm/byteorder.h> /* For __be16 */ |
24 | |
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)) |
29 | #define AC 0x10 |
30 | #define LLC_FRAME 0x40 |
31 | |
32 | /* LLC and SNAP constants */ |
33 | #define EXTENDED_SAP 0xAA |
34 | #define UI_CMD 0x03 |
35 | |
36 | /* This is an Token-Ring frame header. */ |
37 | struct 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 */ |
42 | __be16 rcf; /* route control field */ |
43 | __be16 rseg[8]; /* routing registers */ |
44 | }; |
45 | |
46 | #ifdef __KERNEL__ |
47 | #include <linux/skbuff.h> |
48 | |
49 | static inline struct trh_hdr *tr_hdr(const struct sk_buff *skb) |
50 | { |
51 | return (struct trh_hdr *)skb_mac_header(skb); |
52 | } |
53 | #endif |
54 | |
55 | /* This is an Token-Ring LLC structure */ |
56 | struct trllc { |
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 */ |
62 | }; |
63 | |
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; |
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 */ |
94 | #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 |
102 | |
103 | #endif /* _LINUX_IF_TR_H */ |
104 |
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