ppp_defs.h 6.4 KB

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  1. /* $Id: ppp_defs.h,v 1.1.1.1 2007/06/12 07:27:16 eyryu Exp $ */
  2. /*
  3. * ppp_defs.h - PPP definitions.
  4. *
  5. * Copyright (c) 1994 The Australian National University.
  6. * All rights reserved.
  7. *
  8. * Permission to use, copy, modify, and distribute this software and its
  9. * documentation is hereby granted, provided that the above copyright
  10. * notice appears in all copies. This software is provided without any
  11. * warranty, express or implied. The Australian National University
  12. * makes no representations about the suitability of this software for
  13. * any purpose.
  14. *
  15. * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
  16. * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  17. * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
  18. * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
  19. * OF SUCH DAMAGE.
  20. *
  21. * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
  22. * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  23. * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
  24. * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
  25. * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
  26. * OR MODIFICATIONS.
  27. */
  28. /*
  29. * ==FILEVERSION 20000114==
  30. *
  31. * NOTE TO MAINTAINERS:
  32. * If you modify this file at all, please set the above date.
  33. * ppp_defs.h is shipped with a PPP distribution as well as with the kernel;
  34. * if everyone increases the FILEVERSION number above, then scripts
  35. * can do the right thing when deciding whether to install a new ppp_defs.h
  36. * file. Don't change the format of that line otherwise, so the
  37. * installation script can recognize it.
  38. */
  39. #ifndef _PPP_DEFS_H_
  40. #define _PPP_DEFS_H_
  41. /*
  42. * The basic PPP frame.
  43. */
  44. #define PPP_HDRLEN 4 /* octets for standard ppp header */
  45. #define PPP_FCSLEN 2 /* octets for FCS */
  46. #define PPP_MRU 1500 /* default MRU = max length of info field */
  47. #define PPP_ADDRESS(p) (((__u8 *)(p))[0])
  48. #define PPP_CONTROL(p) (((__u8 *)(p))[1])
  49. #define PPP_PROTOCOL(p) ((((__u8 *)(p))[2] << 8) + ((__u8 *)(p))[3])
  50. /*
  51. * Significant octet values.
  52. */
  53. #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
  54. #define PPP_UI 0x03 /* Unnumbered Information */
  55. #define PPP_FLAG 0x7e /* Flag Sequence */
  56. #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */
  57. #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */
  58. /*
  59. * Protocol field values.
  60. */
  61. #define PPP_IP 0x21 /* Internet Protocol */
  62. #define PPP_AT 0x29 /* AppleTalk Protocol */
  63. #define PPP_IPX 0x2b /* IPX protocol */
  64. #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
  65. #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
  66. #define PPP_MP 0x3d /* Multilink protocol */
  67. #define PPP_IPV6 0x57 /* Internet Protocol Version 6 */
  68. #define PPP_COMPFRAG 0xfb /* fragment compressed below bundle */
  69. #define PPP_COMP 0xfd /* compressed packet */
  70. #define PPP_MPLS_UC 0x0281 /* Multi Protocol Label Switching - Unicast */
  71. #define PPP_MPLS_MC 0x0283 /* Multi Protocol Label Switching - Multicast */
  72. #define PPP_IPCP 0x8021 /* IP Control Protocol */
  73. #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */
  74. #define PPP_IPXCP 0x802b /* IPX Control Protocol */
  75. #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */
  76. #define PPP_CCPFRAG 0x80fb /* CCP at link level (below MP bundle) */
  77. #define PPP_CCP 0x80fd /* Compression Control Protocol */
  78. #define PPP_MPLSCP 0x80fd /* MPLS Control Protocol */
  79. #define PPP_LCP 0xc021 /* Link Control Protocol */
  80. #define PPP_PAP 0xc023 /* Password Authentication Protocol */
  81. #define PPP_LQR 0xc025 /* Link Quality Report protocol */
  82. #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */
  83. #define PPP_CBCP 0xc029 /* Callback Control Protocol */
  84. /*
  85. * Values for FCS calculations.
  86. */
  87. #define PPP_INITFCS 0xffff /* Initial FCS value */
  88. #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */
  89. #ifdef __KERNEL__
  90. #include <linux/crc-ccitt.h>
  91. #define PPP_FCS(fcs, c) crc_ccitt_byte(fcs, c)
  92. #endif
  93. /*
  94. * Extended asyncmap - allows any character to be escaped.
  95. */
  96. typedef __u32 ext_accm[8];
  97. /*
  98. * What to do with network protocol (NP) packets.
  99. */
  100. enum NPmode {
  101. NPMODE_PASS, /* pass the packet through */
  102. NPMODE_DROP, /* silently drop the packet */
  103. NPMODE_ERROR, /* return an error */
  104. NPMODE_QUEUE /* save it up for later. */
  105. };
  106. /*
  107. * Statistics for LQRP and pppstats
  108. */
  109. struct pppstat {
  110. __u32 ppp_discards; /* # frames discarded */
  111. __u32 ppp_ibytes; /* bytes received */
  112. __u32 ppp_ioctects; /* bytes received not in error */
  113. __u32 ppp_ipackets; /* packets received */
  114. __u32 ppp_ierrors; /* receive errors */
  115. __u32 ppp_ilqrs; /* # LQR frames received */
  116. __u32 ppp_obytes; /* raw bytes sent */
  117. __u32 ppp_ooctects; /* frame bytes sent */
  118. __u32 ppp_opackets; /* packets sent */
  119. __u32 ppp_oerrors; /* transmit errors */
  120. __u32 ppp_olqrs; /* # LQR frames sent */
  121. };
  122. struct vjstat {
  123. __u32 vjs_packets; /* outbound packets */
  124. __u32 vjs_compressed; /* outbound compressed packets */
  125. __u32 vjs_searches; /* searches for connection state */
  126. __u32 vjs_misses; /* times couldn't find conn. state */
  127. __u32 vjs_uncompressedin; /* inbound uncompressed packets */
  128. __u32 vjs_compressedin; /* inbound compressed packets */
  129. __u32 vjs_errorin; /* inbound unknown type packets */
  130. __u32 vjs_tossed; /* inbound packets tossed because of error */
  131. };
  132. struct compstat {
  133. __u32 unc_bytes; /* total uncompressed bytes */
  134. __u32 unc_packets; /* total uncompressed packets */
  135. __u32 comp_bytes; /* compressed bytes */
  136. __u32 comp_packets; /* compressed packets */
  137. __u32 inc_bytes; /* incompressible bytes */
  138. __u32 inc_packets; /* incompressible packets */
  139. /* the compression ratio is defined as in_count / bytes_out */
  140. __u32 in_count; /* Bytes received */
  141. __u32 bytes_out; /* Bytes transmitted */
  142. double ratio; /* not computed in kernel. */
  143. };
  144. struct ppp_stats {
  145. struct pppstat p; /* basic PPP statistics */
  146. struct vjstat vj; /* VJ header compression statistics */
  147. };
  148. struct ppp_comp_stats {
  149. struct compstat c; /* packet compression statistics */
  150. struct compstat d; /* packet decompression statistics */
  151. };
  152. /*
  153. * The following structure records the time in seconds since
  154. * the last NP packet was sent or received.
  155. */
  156. struct ppp_idle {
  157. time_t xmit_idle; /* time since last NP packet sent */
  158. time_t recv_idle; /* time since last NP packet received */
  159. };
  160. #endif /* _PPP_DEFS_H_ */