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1da177e4 LT |
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> | |
82d1542c | 12 | * Peter De Schrijver, <stud11@cc4.kuleuven.ac.be> |
1da177e4 LT |
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 | ||
03722adc TR |
22 | #include <asm/byteorder.h> /* For __be16 */ |
23 | ||
1da177e4 LT |
24 | /* IEEE 802.5 Token-Ring magic constants. The frame sizes omit the preamble |
25 | and FCS/CRC (frame check sequence). */ | |
82d1542c JM |
26 | #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 | |
1da177e4 LT |
30 | |
31 | /* LLC and SNAP constants */ | |
82d1542c JM |
32 | #define EXTENDED_SAP 0xAA |
33 | #define UI_CMD 0x03 | |
1da177e4 LT |
34 | |
35 | /* This is an Token-Ring frame header. */ | |
36 | struct 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 */ | |
c6b33653 AD |
41 | __be16 rcf; /* route control field */ |
42 | __be16 rseg[8]; /* routing registers */ | |
1da177e4 LT |
43 | }; |
44 | ||
45 | #ifdef __KERNEL__ | |
46 | #include <linux/skbuff.h> | |
47 | ||
48 | static inline struct trh_hdr *tr_hdr(const struct sk_buff *skb) | |
49 | { | |
98e399f8 | 50 | return (struct trh_hdr *)skb_mac_header(skb); |
1da177e4 LT |
51 | } |
52 | #endif | |
53 | ||
54 | /* This is an Token-Ring LLC structure */ | |
55 | struct trllc { | |
56 | __u8 dsap; /* destination SAP */ | |
57 | __u8 ssap; /* source SAP */ | |
58 | __u8 llc; /* LLC control field */ | |
59 | __u8 protid[3]; /* protocol id */ | |
c6b33653 | 60 | __be16 ethertype; /* ether type field */ |
1da177e4 LT |
61 | }; |
62 | ||
63 | /* Token-Ring statistics collection data. */ | |
64 | struct tr_statistics { | |
65 | unsigned long rx_packets; /* total packets received */ | |
66 | unsigned long tx_packets; /* total packets transmitted */ | |
67 | unsigned long rx_bytes; /* total bytes received */ | |
68 | unsigned long tx_bytes; /* total bytes transmitted */ | |
69 | unsigned long rx_errors; /* bad packets received */ | |
70 | unsigned long tx_errors; /* packet transmit problems */ | |
71 | unsigned long rx_dropped; /* no space in linux buffers */ | |
72 | unsigned long tx_dropped; /* no space available in linux */ | |
73 | unsigned long multicast; /* multicast packets received */ | |
74 | unsigned long transmit_collision; | |
75 | ||
76 | /* detailed Token-Ring errors. See IBM Token-Ring Network | |
77 | Architecture for more info */ | |
78 | ||
79 | unsigned long line_errors; | |
80 | unsigned long internal_errors; | |
81 | unsigned long burst_errors; | |
82 | unsigned long A_C_errors; | |
83 | unsigned long abort_delimiters; | |
84 | unsigned long lost_frames; | |
85 | unsigned long recv_congest_count; | |
86 | unsigned long frame_copied_errors; | |
87 | unsigned long frequency_errors; | |
88 | unsigned long token_errors; | |
89 | unsigned long dummy1; | |
90 | }; | |
91 | ||
92 | /* source routing stuff */ | |
82d1542c JM |
93 | #define TR_RII 0x80 |
94 | #define TR_RCF_DIR_BIT 0x80 | |
95 | #define TR_RCF_LEN_MASK 0x1f00 | |
96 | #define TR_RCF_BROADCAST 0x8000 /* all-routes broadcast */ | |
97 | #define TR_RCF_LIMITED_BROADCAST 0xC000 /* single-route broadcast */ | |
98 | #define TR_RCF_FRAME2K 0x20 | |
99 | #define TR_RCF_BROADCAST_MASK 0xC000 | |
100 | #define TR_MAXRIFLEN 18 | |
1da177e4 LT |
101 | |
102 | #endif /* _LINUX_IF_TR_H */ |