[164] | 1 | /*****************************************************************************
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| 2 | * ppp_oe.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 |
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| 31 |
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| 32 |
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| 33 | /* based on NetBSD: if_pppoe.c,v 1.64 2006/01/31 23:50:15 martin Exp */
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| 34 |
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| 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 | #ifndef PPP_OE_H
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| 71 | #define PPP_OE_H
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| 72 |
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| 73 | #include "lwip/opt.h"
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| 74 |
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| 75 | #if PPPOE_SUPPORT > 0
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| 76 |
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| 77 | #include "netif/etharp.h"
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| 78 |
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| 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_FIELD(u8_t vertype);
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| 85 | PACK_STRUCT_FIELD(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 |
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| 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 |
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| 107 |
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| 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 | #define PPPOE_STATE_CLOSING 4
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| 113 | /* passive */
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| 114 | #define PPPOE_STATE_PADO_SENT 1
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| 115 |
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| 116 | #define PPPOE_HEADERLEN sizeof(struct pppoehdr)
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| 117 | #define PPPOE_VERTYPE 0x11 /* VER=1, TYPE = 1 */
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| 118 |
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| 119 | #define PPPOE_TAG_EOL 0x0000 /* end of list */
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| 120 | #define PPPOE_TAG_SNAME 0x0101 /* service name */
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| 121 | #define PPPOE_TAG_ACNAME 0x0102 /* access concentrator name */
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| 122 | #define PPPOE_TAG_HUNIQUE 0x0103 /* host unique */
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| 123 | #define PPPOE_TAG_ACCOOKIE 0x0104 /* AC cookie */
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| 124 | #define PPPOE_TAG_VENDOR 0x0105 /* vendor specific */
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| 125 | #define PPPOE_TAG_RELAYSID 0x0110 /* relay session id */
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| 126 | #define PPPOE_TAG_SNAME_ERR 0x0201 /* service name error */
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| 127 | #define PPPOE_TAG_ACSYS_ERR 0x0202 /* AC system error */
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| 128 | #define PPPOE_TAG_GENERIC_ERR 0x0203 /* gerneric error */
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| 129 |
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| 130 | #define PPPOE_CODE_PADI 0x09 /* Active Discovery Initiation */
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| 131 | #define PPPOE_CODE_PADO 0x07 /* Active Discovery Offer */
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| 132 | #define PPPOE_CODE_PADR 0x19 /* Active Discovery Request */
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| 133 | #define PPPOE_CODE_PADS 0x65 /* Active Discovery Session confirmation */
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| 134 | #define PPPOE_CODE_PADT 0xA7 /* Active Discovery Terminate */
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| 135 |
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| 136 | #ifndef ETHERMTU
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| 137 | #define ETHERMTU 1500
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| 138 | #endif
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| 139 |
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| 140 | /* two byte PPP protocol discriminator, then IP data */
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| 141 | #define PPPOE_MAXMTU (ETHERMTU-PPPOE_HEADERLEN-2)
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| 142 |
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| 143 | #ifndef PPPOE_MAX_AC_COOKIE_LEN
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| 144 | #define PPPOE_MAX_AC_COOKIE_LEN 64
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| 145 | #endif
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| 146 |
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| 147 | struct pppoe_softc {
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| 148 | struct pppoe_softc *next;
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| 149 | struct netif *sc_ethif; /* ethernet interface we are using */
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| 150 | int sc_pd; /* ppp unit number */
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| 151 | void (*sc_linkStatusCB)(int pd, int up);
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| 152 |
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| 153 | int sc_state; /* discovery phase or session connected */
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| 154 | struct eth_addr sc_dest; /* hardware address of concentrator */
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| 155 | u16_t sc_session; /* PPPoE session id */
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| 156 |
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| 157 | #ifdef PPPOE_TODO
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| 158 | char *sc_service_name; /* if != NULL: requested name of service */
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| 159 | char *sc_concentrator_name; /* if != NULL: requested concentrator id */
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| 160 | #endif /* PPPOE_TODO */
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| 161 | u8_t sc_ac_cookie[PPPOE_MAX_AC_COOKIE_LEN]; /* content of AC cookie we must echo back */
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| 162 | size_t sc_ac_cookie_len; /* length of cookie data */
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| 163 | #ifdef PPPOE_SERVER
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| 164 | u8_t *sc_hunique; /* content of host unique we must echo back */
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| 165 | size_t sc_hunique_len; /* length of host unique */
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| 166 | #endif
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| 167 | int sc_padi_retried; /* number of PADI retries already done */
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| 168 | int sc_padr_retried; /* number of PADR retries already done */
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| 169 | };
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| 170 |
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| 171 |
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| 172 | #define pppoe_init() /* compatibility define, no initialization needed */
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| 173 |
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| 174 | err_t pppoe_create(struct netif *ethif, int pd, void (*linkStatusCB)(int pd, int up), struct pppoe_softc **scptr);
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| 175 | err_t pppoe_destroy(struct netif *ifp);
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| 176 |
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| 177 | int pppoe_connect(struct pppoe_softc *sc);
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| 178 | void pppoe_disconnect(struct pppoe_softc *sc);
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| 179 |
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| 180 | void pppoe_disc_input(struct netif *netif, struct pbuf *p);
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| 181 | void pppoe_data_input(struct netif *netif, struct pbuf *p);
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| 182 |
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| 183 | err_t pppoe_xmit(struct pppoe_softc *sc, struct pbuf *pb);
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| 184 |
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| 185 | /** used in ppp.c */
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| 186 | #define PPPOE_HDRLEN (sizeof(struct eth_hdr) + PPPOE_HEADERLEN)
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| 187 |
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| 188 | #endif /* PPPOE_SUPPORT */
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| 189 |
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| 190 | #endif /* PPP_OE_H */
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