1 | /* |
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2 | * ppp_defs.h - PPP definitions. |
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3 | */ |
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4 | /*- |
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5 | * Copyright (c) 1994 The Australian National University. |
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6 | * All rights reserved. |
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7 | * |
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8 | * Permission to use, copy, modify, and distribute this software and its |
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9 | * documentation is hereby granted, provided that the above copyright |
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10 | * notice appears in all copies. This software is provided without any |
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11 | * warranty, express or implied. The Australian National University |
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12 | * makes no representations about the suitability of this software for |
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13 | * any purpose. |
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14 | * |
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15 | * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY |
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16 | * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
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17 | * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF |
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18 | * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY |
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19 | * OF SUCH DAMAGE. |
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20 | * |
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21 | * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, |
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22 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY |
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23 | * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
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24 | * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO |
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25 | * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, |
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26 | * OR MODIFICATIONS. |
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27 | * |
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28 | * $FreeBSD$ |
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29 | */ |
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30 | |
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31 | #ifndef _PPP_DEFS_H_ |
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32 | #define _PPP_DEFS_H_ |
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33 | |
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34 | #include <sys/_types.h> |
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35 | |
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36 | /* |
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37 | * The basic PPP frame. |
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38 | */ |
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39 | #define PPP_HDRLEN 4 /* octets for standard ppp header */ |
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40 | #define PPP_FCSLEN 2 /* octets for FCS */ |
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41 | #define PPP_MRU 1500 /* default MRU = max length of info field */ |
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42 | |
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43 | #define PPP_ADDRESS(p) (((u_char *)(p))[0]) |
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44 | #define PPP_CONTROL(p) (((u_char *)(p))[1]) |
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45 | #define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3]) |
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46 | |
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47 | /* |
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48 | * Significant octet values. |
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49 | */ |
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50 | #define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ |
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51 | #define PPP_UI 0x03 /* Unnumbered Information */ |
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52 | #define PPP_FLAG 0x7e /* Flag Sequence */ |
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53 | #define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ |
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54 | #define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ |
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55 | |
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56 | /* |
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57 | * Protocol field values. |
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58 | */ |
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59 | #define PPP_IP 0x21 /* Internet Protocol */ |
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60 | #define PPP_XNS 0x25 /* Xerox NS */ |
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61 | #define PPP_AT 0x29 /* AppleTalk Protocol */ |
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62 | #define PPP_IPX 0x2b /* IPX Datagram (RFC1552) */ |
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63 | #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ |
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64 | #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ |
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65 | #define PPP_COMP 0xfd /* compressed packet */ |
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66 | #define PPP_IPCP 0x8021 /* IP Control Protocol */ |
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67 | #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ |
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68 | #define PPP_IPXCP 0x802b /* IPX Control Protocol (RFC1552) */ |
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69 | #define PPP_CCP 0x80fd /* Compression Control Protocol */ |
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70 | #define PPP_LCP 0xc021 /* Link Control Protocol */ |
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71 | #define PPP_PAP 0xc023 /* Password Authentication Protocol */ |
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72 | #define PPP_LQR 0xc025 /* Link Quality Report protocol */ |
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73 | #define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ |
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74 | #define PPP_CBCP 0xc029 /* Callback Control Protocol */ |
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75 | #define PPP_IPV6 0x57 /* Internet Protocol version 6*/ |
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76 | #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ |
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77 | |
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78 | /* |
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79 | * Values for FCS calculations. |
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80 | */ |
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81 | #define PPP_INITFCS 0xffff /* Initial FCS value */ |
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82 | #define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ |
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83 | #define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff]) |
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84 | |
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85 | /* |
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86 | * Extended asyncmap - allows any character to be escaped. |
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87 | */ |
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88 | typedef __uint32_t ext_accm[8]; |
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89 | |
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90 | /* |
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91 | * What to do with network protocol (NP) packets. |
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92 | */ |
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93 | enum NPmode { |
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94 | NPMODE_PASS, /* pass the packet through */ |
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95 | NPMODE_DROP, /* silently drop the packet */ |
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96 | NPMODE_ERROR, /* return an error */ |
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97 | NPMODE_QUEUE /* save it up for later. */ |
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98 | }; |
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99 | |
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100 | /* |
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101 | * Statistics. |
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102 | */ |
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103 | struct pppstat { |
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104 | unsigned int ppp_ibytes; /* bytes received */ |
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105 | unsigned int ppp_ipackets; /* packets received */ |
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106 | unsigned int ppp_ierrors; /* receive errors */ |
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107 | unsigned int ppp_obytes; /* bytes sent */ |
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108 | unsigned int ppp_opackets; /* packets sent */ |
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109 | unsigned int ppp_oerrors; /* transmit errors */ |
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110 | }; |
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111 | |
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112 | struct vjstat { |
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113 | unsigned int vjs_packets; /* outbound packets */ |
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114 | unsigned int vjs_compressed; /* outbound compressed packets */ |
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115 | unsigned int vjs_searches; /* searches for connection state */ |
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116 | unsigned int vjs_misses; /* times couldn't find conn. state */ |
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117 | unsigned int vjs_uncompressedin; /* inbound uncompressed packets */ |
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118 | unsigned int vjs_compressedin; /* inbound compressed packets */ |
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119 | unsigned int vjs_errorin; /* inbound unknown type packets */ |
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120 | unsigned int vjs_tossed; /* inbound packets tossed because of error */ |
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121 | }; |
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122 | |
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123 | struct ppp_stats { |
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124 | struct pppstat p; /* basic PPP statistics */ |
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125 | struct vjstat vj; /* VJ header compression statistics */ |
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126 | }; |
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127 | |
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128 | struct compstat { |
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129 | unsigned int unc_bytes; /* total uncompressed bytes */ |
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130 | unsigned int unc_packets; /* total uncompressed packets */ |
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131 | unsigned int comp_bytes; /* compressed bytes */ |
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132 | unsigned int comp_packets; /* compressed packets */ |
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133 | unsigned int inc_bytes; /* incompressible bytes */ |
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134 | unsigned int inc_packets; /* incompressible packets */ |
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135 | unsigned int ratio; /* recent compression ratio << 8 */ |
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136 | }; |
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137 | |
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138 | struct ppp_comp_stats { |
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139 | struct compstat c; /* packet compression statistics */ |
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140 | struct compstat d; /* packet decompression statistics */ |
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141 | }; |
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142 | |
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143 | /* |
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144 | * The following structure records the time in seconds since |
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145 | * the last NP packet was sent or received. |
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146 | */ |
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147 | struct ppp_idle { |
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148 | __time_t xmit_idle; /* time since last NP packet sent */ |
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149 | __time_t recv_idle; /* time since last NP packet received */ |
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150 | }; |
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151 | |
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152 | #ifndef __P |
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153 | #ifdef __STDC__ |
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154 | #define __P(x) x |
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155 | #else |
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156 | #define __P(x) () |
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157 | #endif |
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158 | #endif |
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159 | |
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160 | #endif /* _PPP_DEFS_H_ */ |
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