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1 | office | 1 | /***************************************************************************** |
2 | * pppoe.h - PPP Over Ethernet implementation for lwIP. |
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3 | * |
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4 | * Copyright (c) 2006 by Marc Boucher, Services Informatiques (MBSI) inc. |
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5 | * |
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6 | * The authors hereby grant permission to use, copy, modify, distribute, |
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7 | * and license this software and its documentation for any purpose, provided |
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8 | * that existing copyright notices are retained in all copies and that this |
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9 | * notice and the following disclaimer are included verbatim in any |
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10 | * distributions. No written agreement, license, or royalty fee is required |
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11 | * for any of the authorized uses. |
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12 | * |
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13 | * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR |
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14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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16 | * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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23 | * |
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24 | ****************************************************************************** |
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25 | * REVISION HISTORY |
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26 | * |
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27 | * 06-01-01 Marc Boucher <marc@mbsi.ca> |
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28 | * Ported to lwIP. |
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29 | *****************************************************************************/ |
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30 | |||
31 | |||
32 | |||
33 | /* based on NetBSD: if_pppoe.c,v 1.64 2006/01/31 23:50:15 martin Exp */ |
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34 | |||
35 | /*- |
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36 | * Copyright (c) 2002 The NetBSD Foundation, Inc. |
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37 | * All rights reserved. |
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38 | * |
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39 | * This code is derived from software contributed to The NetBSD Foundation |
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40 | * by Martin Husemann <martin@NetBSD.org>. |
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41 | * |
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42 | * Redistribution and use in source and binary forms, with or without |
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43 | * modification, are permitted provided that the following conditions |
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44 | * are met: |
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45 | * 1. Redistributions of source code must retain the above copyright |
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46 | * notice, this list of conditions and the following disclaimer. |
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47 | * 2. Redistributions in binary form must reproduce the above copyright |
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48 | * notice, this list of conditions and the following disclaimer in the |
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49 | * documentation and/or other materials provided with the distribution. |
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50 | * 3. All advertising materials mentioning features or use of this software |
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51 | * must display the following acknowledgement: |
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52 | * This product includes software developed by the NetBSD |
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53 | * Foundation, Inc. and its contributors. |
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54 | * 4. Neither the name of The NetBSD Foundation nor the names of its |
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55 | * contributors may be used to endorse or promote products derived |
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56 | * from this software without specific prior written permission. |
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57 | * |
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58 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
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59 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
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60 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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61 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
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62 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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63 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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64 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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65 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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66 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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67 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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68 | * POSSIBILITY OF SUCH DAMAGE. |
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69 | */ |
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70 | #include "netif/ppp/ppp_opts.h" |
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71 | #if PPP_SUPPORT && PPPOE_SUPPORT /* don't build if not configured for use in lwipopts.h */ |
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72 | |||
73 | #ifndef PPP_OE_H |
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74 | #define PPP_OE_H |
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75 | |||
76 | #include "ppp.h" |
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77 | #include "lwip/etharp.h" |
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78 | |||
79 | #ifdef PACK_STRUCT_USE_INCLUDES |
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80 | # include "arch/bpstruct.h" |
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81 | #endif |
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82 | PACK_STRUCT_BEGIN |
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83 | struct pppoehdr { |
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84 | PACK_STRUCT_FLD_8(u8_t vertype); |
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85 | PACK_STRUCT_FLD_8(u8_t code); |
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86 | PACK_STRUCT_FIELD(u16_t session); |
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87 | PACK_STRUCT_FIELD(u16_t plen); |
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88 | } PACK_STRUCT_STRUCT; |
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89 | PACK_STRUCT_END |
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90 | #ifdef PACK_STRUCT_USE_INCLUDES |
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91 | # include "arch/epstruct.h" |
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92 | #endif |
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93 | |||
94 | #ifdef PACK_STRUCT_USE_INCLUDES |
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95 | # include "arch/bpstruct.h" |
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96 | #endif |
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97 | PACK_STRUCT_BEGIN |
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98 | struct pppoetag { |
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99 | PACK_STRUCT_FIELD(u16_t tag); |
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100 | PACK_STRUCT_FIELD(u16_t len); |
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101 | } PACK_STRUCT_STRUCT; |
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102 | PACK_STRUCT_END |
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103 | #ifdef PACK_STRUCT_USE_INCLUDES |
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104 | # include "arch/epstruct.h" |
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105 | #endif |
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106 | |||
107 | |||
108 | #define PPPOE_STATE_INITIAL 0 |
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109 | #define PPPOE_STATE_PADI_SENT 1 |
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110 | #define PPPOE_STATE_PADR_SENT 2 |
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111 | #define PPPOE_STATE_SESSION 3 |
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112 | /* passive */ |
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113 | #define PPPOE_STATE_PADO_SENT 1 |
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114 | |||
115 | #define PPPOE_HEADERLEN sizeof(struct pppoehdr) |
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116 | #define PPPOE_VERTYPE 0x11 /* VER=1, TYPE = 1 */ |
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117 | |||
118 | #define PPPOE_TAG_EOL 0x0000 /* end of list */ |
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119 | #define PPPOE_TAG_SNAME 0x0101 /* service name */ |
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120 | #define PPPOE_TAG_ACNAME 0x0102 /* access concentrator name */ |
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121 | #define PPPOE_TAG_HUNIQUE 0x0103 /* host unique */ |
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122 | #define PPPOE_TAG_ACCOOKIE 0x0104 /* AC cookie */ |
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123 | #define PPPOE_TAG_VENDOR 0x0105 /* vendor specific */ |
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124 | #define PPPOE_TAG_RELAYSID 0x0110 /* relay session id */ |
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125 | #define PPPOE_TAG_SNAME_ERR 0x0201 /* service name error */ |
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126 | #define PPPOE_TAG_ACSYS_ERR 0x0202 /* AC system error */ |
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127 | #define PPPOE_TAG_GENERIC_ERR 0x0203 /* gerneric error */ |
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128 | |||
129 | #define PPPOE_CODE_PADI 0x09 /* Active Discovery Initiation */ |
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130 | #define PPPOE_CODE_PADO 0x07 /* Active Discovery Offer */ |
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131 | #define PPPOE_CODE_PADR 0x19 /* Active Discovery Request */ |
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132 | #define PPPOE_CODE_PADS 0x65 /* Active Discovery Session confirmation */ |
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133 | #define PPPOE_CODE_PADT 0xA7 /* Active Discovery Terminate */ |
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134 | |||
135 | #ifndef PPPOE_MAX_AC_COOKIE_LEN |
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136 | #define PPPOE_MAX_AC_COOKIE_LEN 64 |
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137 | #endif |
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138 | |||
139 | struct pppoe_softc { |
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140 | struct pppoe_softc *next; |
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141 | struct netif *sc_ethif; /* ethernet interface we are using */ |
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142 | ppp_pcb *pcb; /* PPP PCB */ |
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143 | |||
144 | struct eth_addr sc_dest; /* hardware address of concentrator */ |
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145 | u16_t sc_session; /* PPPoE session id */ |
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146 | u8_t sc_state; /* discovery phase or session connected */ |
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147 | |||
148 | #ifdef PPPOE_TODO |
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149 | u8_t *sc_service_name; /* if != NULL: requested name of service */ |
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150 | u8_t *sc_concentrator_name; /* if != NULL: requested concentrator id */ |
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151 | #endif /* PPPOE_TODO */ |
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152 | u8_t sc_ac_cookie[PPPOE_MAX_AC_COOKIE_LEN]; /* content of AC cookie we must echo back */ |
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153 | u8_t sc_ac_cookie_len; /* length of cookie data */ |
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154 | #ifdef PPPOE_SERVER |
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155 | u8_t *sc_hunique; /* content of host unique we must echo back */ |
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156 | u8_t sc_hunique_len; /* length of host unique */ |
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157 | #endif |
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158 | u8_t sc_padi_retried; /* number of PADI retries already done */ |
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159 | u8_t sc_padr_retried; /* number of PADR retries already done */ |
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160 | }; |
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161 | |||
162 | |||
163 | #define pppoe_init() /* compatibility define, no initialization needed */ |
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164 | |||
165 | ppp_pcb *pppoe_create(struct netif *pppif, |
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166 | struct netif *ethif, |
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167 | const char *service_name, const char *concentrator_name, |
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168 | ppp_link_status_cb_fn link_status_cb, void *ctx_cb); |
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169 | |||
170 | /* |
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171 | * Functions called from lwIP |
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172 | * DO NOT CALL FROM lwIP USER APPLICATION. |
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173 | */ |
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174 | void pppoe_disc_input(struct netif *netif, struct pbuf *p); |
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175 | void pppoe_data_input(struct netif *netif, struct pbuf *p); |
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176 | |||
177 | #endif /* PPP_OE_H */ |
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178 | |||
179 | #endif /* PPP_SUPPORT && PPPOE_SUPPORT */ |