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1 | office | 1 | /* |
2 | * lcp.h - Link Control Protocol definitions. |
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3 | * |
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4 | * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions |
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8 | * are met: |
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9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright |
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11 | * notice, this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in |
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15 | * the documentation and/or other materials provided with the |
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16 | * distribution. |
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17 | * |
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18 | * 3. The name "Carnegie Mellon University" must not be used to |
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19 | * endorse or promote products derived from this software without |
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20 | * prior written permission. For permission or any legal |
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21 | * details, please contact |
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22 | * Office of Technology Transfer |
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23 | * Carnegie Mellon University |
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24 | * 5000 Forbes Avenue |
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25 | * Pittsburgh, PA 15213-3890 |
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26 | * (412) 268-4387, fax: (412) 268-7395 |
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27 | * tech-transfer@andrew.cmu.edu |
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28 | * |
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29 | * 4. Redistributions of any form whatsoever must retain the following |
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30 | * acknowledgment: |
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31 | * "This product includes software developed by Computing Services |
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32 | * at Carnegie Mellon University (http://www.cmu.edu/computing/)." |
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33 | * |
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34 | * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO |
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35 | * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY |
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36 | * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE |
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37 | * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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38 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN |
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39 | * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
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40 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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41 | * |
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42 | * $Id: lcp.h,v 1.20 2004/11/14 22:53:42 carlsonj Exp $ |
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43 | */ |
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44 | |||
45 | #include "netif/ppp/ppp_opts.h" |
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46 | #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ |
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47 | |||
48 | #ifndef LCP_H |
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49 | #define LCP_H |
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50 | |||
51 | #include "ppp.h" |
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52 | |||
53 | /* |
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54 | * Options. |
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55 | */ |
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56 | #define CI_VENDOR 0 /* Vendor Specific */ |
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57 | #define CI_MRU 1 /* Maximum Receive Unit */ |
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58 | #define CI_ASYNCMAP 2 /* Async Control Character Map */ |
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59 | #define CI_AUTHTYPE 3 /* Authentication Type */ |
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60 | #define CI_QUALITY 4 /* Quality Protocol */ |
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61 | #define CI_MAGICNUMBER 5 /* Magic Number */ |
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62 | #define CI_PCOMPRESSION 7 /* Protocol Field Compression */ |
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63 | #define CI_ACCOMPRESSION 8 /* Address/Control Field Compression */ |
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64 | #define CI_FCSALTERN 9 /* FCS-Alternatives */ |
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65 | #define CI_SDP 10 /* Self-Describing-Pad */ |
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66 | #define CI_NUMBERED 11 /* Numbered-Mode */ |
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67 | #define CI_CALLBACK 13 /* callback */ |
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68 | #define CI_MRRU 17 /* max reconstructed receive unit; multilink */ |
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69 | #define CI_SSNHF 18 /* short sequence numbers for multilink */ |
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70 | #define CI_EPDISC 19 /* endpoint discriminator */ |
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71 | #define CI_MPPLUS 22 /* Multi-Link-Plus-Procedure */ |
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72 | #define CI_LDISC 23 /* Link-Discriminator */ |
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73 | #define CI_LCPAUTH 24 /* LCP Authentication */ |
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74 | #define CI_COBS 25 /* Consistent Overhead Byte Stuffing */ |
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75 | #define CI_PREFELIS 26 /* Prefix Elision */ |
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76 | #define CI_MPHDRFMT 27 /* MP Header Format */ |
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77 | #define CI_I18N 28 /* Internationalization */ |
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78 | #define CI_SDL 29 /* Simple Data Link */ |
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79 | |||
80 | /* |
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81 | * LCP-specific packet types (code numbers). |
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82 | */ |
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83 | #define PROTREJ 8 /* Protocol Reject */ |
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84 | #define ECHOREQ 9 /* Echo Request */ |
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85 | #define ECHOREP 10 /* Echo Reply */ |
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86 | #define DISCREQ 11 /* Discard Request */ |
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87 | #define IDENTIF 12 /* Identification */ |
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88 | #define TIMEREM 13 /* Time Remaining */ |
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89 | |||
90 | /* Value used as data for CI_CALLBACK option */ |
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91 | #define CBCP_OPT 6 /* Use callback control protocol */ |
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92 | |||
93 | #if 0 /* moved to ppp_opts.h */ |
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94 | #define DEFMRU 1500 /* Try for this */ |
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95 | #define MINMRU 128 /* No MRUs below this */ |
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96 | #define MAXMRU 16384 /* Normally limit MRU to this */ |
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97 | #endif /* moved to ppp_opts.h */ |
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98 | |||
99 | /* An endpoint discriminator, used with multilink. */ |
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100 | #define MAX_ENDP_LEN 20 /* maximum length of discriminator value */ |
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101 | struct epdisc { |
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102 | unsigned char class_; /* -- The word "class" is reserved in C++. */ |
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103 | unsigned char length; |
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104 | unsigned char value[MAX_ENDP_LEN]; |
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105 | }; |
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106 | |||
107 | /* |
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108 | * The state of options is described by an lcp_options structure. |
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109 | */ |
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110 | typedef struct lcp_options { |
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111 | unsigned int passive :1; /* Don't die if we don't get a response */ |
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112 | unsigned int silent :1; /* Wait for the other end to start first */ |
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113 | #if 0 /* UNUSED */ |
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114 | unsigned int restart :1; /* Restart vs. exit after close */ |
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115 | #endif /* UNUSED */ |
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116 | unsigned int neg_mru :1; /* Negotiate the MRU? */ |
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117 | unsigned int neg_asyncmap :1; /* Negotiate the async map? */ |
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118 | #if PAP_SUPPORT |
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119 | unsigned int neg_upap :1; /* Ask for UPAP authentication? */ |
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120 | #endif /* PAP_SUPPORT */ |
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121 | #if CHAP_SUPPORT |
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122 | unsigned int neg_chap :1; /* Ask for CHAP authentication? */ |
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123 | #endif /* CHAP_SUPPORT */ |
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124 | #if EAP_SUPPORT |
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125 | unsigned int neg_eap :1; /* Ask for EAP authentication? */ |
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126 | #endif /* EAP_SUPPORT */ |
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127 | unsigned int neg_magicnumber :1; /* Ask for magic number? */ |
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128 | unsigned int neg_pcompression :1; /* HDLC Protocol Field Compression? */ |
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129 | unsigned int neg_accompression :1; /* HDLC Address/Control Field Compression? */ |
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130 | #if LQR_SUPPORT |
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131 | unsigned int neg_lqr :1; /* Negotiate use of Link Quality Reports */ |
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132 | #endif /* LQR_SUPPORT */ |
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133 | unsigned int neg_cbcp :1; /* Negotiate use of CBCP */ |
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134 | #ifdef HAVE_MULTILINK |
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135 | unsigned int neg_mrru :1; /* negotiate multilink MRRU */ |
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136 | #endif /* HAVE_MULTILINK */ |
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137 | unsigned int neg_ssnhf :1; /* negotiate short sequence numbers */ |
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138 | unsigned int neg_endpoint :1; /* negotiate endpoint discriminator */ |
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139 | |||
140 | u16_t mru; /* Value of MRU */ |
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141 | #ifdef HAVE_MULTILINK |
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142 | u16_t mrru; /* Value of MRRU, and multilink enable */ |
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143 | #endif /* MULTILINK */ |
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144 | #if CHAP_SUPPORT |
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145 | u8_t chap_mdtype; /* which MD types (hashing algorithm) */ |
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146 | #endif /* CHAP_SUPPORT */ |
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147 | u32_t asyncmap; /* Value of async map */ |
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148 | u32_t magicnumber; |
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149 | u8_t numloops; /* Number of loops during magic number neg. */ |
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150 | #if LQR_SUPPORT |
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151 | u32_t lqr_period; /* Reporting period for LQR 1/100ths second */ |
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152 | #endif /* LQR_SUPPORT */ |
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153 | struct epdisc endpoint; /* endpoint discriminator */ |
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154 | } lcp_options; |
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155 | |||
156 | void lcp_open(ppp_pcb *pcb); |
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157 | void lcp_close(ppp_pcb *pcb, const char *reason); |
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158 | void lcp_lowerup(ppp_pcb *pcb); |
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159 | void lcp_lowerdown(ppp_pcb *pcb); |
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160 | void lcp_sprotrej(ppp_pcb *pcb, u_char *p, int len); /* send protocol reject */ |
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161 | |||
162 | extern const struct protent lcp_protent; |
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163 | |||
164 | #if 0 /* moved to ppp_opts.h */ |
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165 | /* Default number of times we receive our magic number from the peer |
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166 | before deciding the link is looped-back. */ |
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167 | #define DEFLOOPBACKFAIL 10 |
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168 | #endif /* moved to ppp_opts.h */ |
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169 | |||
170 | #endif /* LCP_H */ |
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171 | #endif /* PPP_SUPPORT */ |