if_tr.h 3.3 KB

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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. #include <asm/byteorder.h> /* For __be16 */
  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))
  26. #define AC 0x10
  27. #define LLC_FRAME 0x40
  28. /* LLC and SNAP constants */
  29. #define EXTENDED_SAP 0xAA
  30. #define UI_CMD 0x03
  31. /* This is an Token-Ring frame header. */
  32. struct trh_hdr {
  33. __u8 ac; /* access control field */
  34. __u8 fc; /* frame control field */
  35. __u8 daddr[TR_ALEN]; /* destination address */
  36. __u8 saddr[TR_ALEN]; /* source address */
  37. __be16 rcf; /* route control field */
  38. __be16 rseg[8]; /* routing registers */
  39. };
  40. #ifdef __KERNEL__
  41. #include <linux/skbuff.h>
  42. static inline struct trh_hdr *tr_hdr(const struct sk_buff *skb)
  43. {
  44. return (struct trh_hdr *)skb->mac.raw;
  45. }
  46. #ifdef CONFIG_SYSCTL
  47. extern struct ctl_table tr_table[];
  48. #endif
  49. #endif
  50. /* This is an Token-Ring LLC structure */
  51. struct trllc {
  52. __u8 dsap; /* destination SAP */
  53. __u8 ssap; /* source SAP */
  54. __u8 llc; /* LLC control field */
  55. __u8 protid[3]; /* protocol id */
  56. __be16 ethertype; /* ether type field */
  57. };
  58. /* Token-Ring statistics collection data. */
  59. struct tr_statistics {
  60. unsigned long rx_packets; /* total packets received */
  61. unsigned long tx_packets; /* total packets transmitted */
  62. unsigned long rx_bytes; /* total bytes received */
  63. unsigned long tx_bytes; /* total bytes transmitted */
  64. unsigned long rx_errors; /* bad packets received */
  65. unsigned long tx_errors; /* packet transmit problems */
  66. unsigned long rx_dropped; /* no space in linux buffers */
  67. unsigned long tx_dropped; /* no space available in linux */
  68. unsigned long multicast; /* multicast packets received */
  69. unsigned long transmit_collision;
  70. /* detailed Token-Ring errors. See IBM Token-Ring Network
  71. Architecture for more info */
  72. unsigned long line_errors;
  73. unsigned long internal_errors;
  74. unsigned long burst_errors;
  75. unsigned long A_C_errors;
  76. unsigned long abort_delimiters;
  77. unsigned long lost_frames;
  78. unsigned long recv_congest_count;
  79. unsigned long frame_copied_errors;
  80. unsigned long frequency_errors;
  81. unsigned long token_errors;
  82. unsigned long dummy1;
  83. };
  84. /* source routing stuff */
  85. #define TR_RII 0x80
  86. #define TR_RCF_DIR_BIT 0x80
  87. #define TR_RCF_LEN_MASK 0x1f00
  88. #define TR_RCF_BROADCAST 0x8000 /* all-routes broadcast */
  89. #define TR_RCF_LIMITED_BROADCAST 0xC000 /* single-route broadcast */
  90. #define TR_RCF_FRAME2K 0x20
  91. #define TR_RCF_BROADCAST_MASK 0xC000
  92. #define TR_MAXRIFLEN 18
  93. #endif /* _LINUX_IF_TR_H */