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/*****************************************************************************

* ppp_oe.h - PPP Over Ethernet implementation for lwIP.

*

* Copyright (c) 2006 by Marc Boucher, Services Informatiques (MBSI) inc.

*

* The authors hereby grant permission to use, copy, modify, distribute,

* and license this software and its documentation for any purpose, provided

* that existing copyright notices are retained in all copies and that this

* notice and the following disclaimer are included verbatim in any

* distributions. No written agreement, license, or royalty fee is required

* for any of the authorized uses.

*

* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR

* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*

******************************************************************************

* REVISION HISTORY

*

* 06-01-01 Marc Boucher <marc@mbsi.ca>

*   Ported to lwIP.

*****************************************************************************/

/* based on NetBSD: if_pppoe.c,v 1.64 2006/01/31 23:50:15 martin Exp */

/*-

 * Copyright (c) 2002 The NetBSD Foundation, Inc.

 * All rights reserved.

 *

 * This code is derived from software contributed to The NetBSD Foundation

 * by Martin Husemann <martin@NetBSD.org>.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *        This product includes software developed by the NetBSD

 *        Foundation, Inc. and its contributors.

 * 4. Neither the name of The NetBSD Foundation nor the names of its

 *    contributors may be used to endorse or promote products derived

 *    from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS

 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED

 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS

 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef PPP_OE_H

#define PPP_OE_H

#include "lwip/opt.h"

#if PPPOE_SUPPORT > 0

#ifdef PACK_STRUCT_USE_INCLUDES

#  include "arch/bpstruct.h"

#endif

PACK_STRUCT_BEGIN

struct pppoehdr {

        PACK_STRUCT_FIELD(u8_t vertype);

        PACK_STRUCT_FIELD(u8_t code);

        PACK_STRUCT_FIELD(u16_t session);

        PACK_STRUCT_FIELD(u16_t plen);

} PACK_STRUCT_STRUCT;

PACK_STRUCT_END

#ifdef PACK_STRUCT_USE_INCLUDES

#  include "arch/epstruct.h"

#endif

#ifdef PACK_STRUCT_USE_INCLUDES

#  include "arch/bpstruct.h"

#endif

PACK_STRUCT_BEGIN

struct pppoetag {

        PACK_STRUCT_FIELD(u16_t tag);

        PACK_STRUCT_FIELD(u16_t len);

} PACK_STRUCT_STRUCT;

PACK_STRUCT_END

#ifdef PACK_STRUCT_USE_INCLUDES

#  include "arch/epstruct.h"

#endif

#define PPPOE_STATE_INITIAL     0

#define PPPOE_STATE_PADI_SENT   1

#define PPPOE_STATE_PADR_SENT   2

#define PPPOE_STATE_SESSION     3

#define PPPOE_STATE_CLOSING     4

/* passive */

#define PPPOE_STATE_PADO_SENT   1

#define PPPOE_HEADERLEN sizeof(struct pppoehdr)

#define PPPOE_VERTYPE   0x11    /* VER=1, TYPE = 1 */

#define PPPOE_TAG_EOL           0x0000          /* end of list */

#define PPPOE_TAG_SNAME         0x0101          /* service name */

#define PPPOE_TAG_ACNAME        0x0102          /* access concentrator name */

#define PPPOE_TAG_HUNIQUE       0x0103          /* host unique */

#define PPPOE_TAG_ACCOOKIE      0x0104          /* AC cookie */

#define PPPOE_TAG_VENDOR        0x0105          /* vendor specific */

#define PPPOE_TAG_RELAYSID      0x0110          /* relay session id */

#define PPPOE_TAG_SNAME_ERR     0x0201          /* service name error */

#define PPPOE_TAG_ACSYS_ERR     0x0202          /* AC system error */

#define PPPOE_TAG_GENERIC_ERR   0x0203          /* gerneric error */

#define PPPOE_CODE_PADI         0x09            /* Active Discovery Initiation */

#define PPPOE_CODE_PADO         0x07            /* Active Discovery Offer */

#define PPPOE_CODE_PADR         0x19            /* Active Discovery Request */

#define PPPOE_CODE_PADS         0x65            /* Active Discovery Session confirmation */

#define PPPOE_CODE_PADT         0xA7            /* Active Discovery Terminate */

#ifndef ETHERMTU

#define ETHERMTU 1500

#endif

/* two byte PPP protocol discriminator, then IP data */

#define PPPOE_MAXMTU    (ETHERMTU-PPPOE_HEADERLEN-2)

struct pppoe_softc;

void pppoe_init(void);

err_t pppoe_create(struct netif *ethif, int pd, void (*linkStatusCB)(int pd, int up), struct pppoe_softc **scptr);

err_t pppoe_destroy(struct netif *ifp);

int pppoe_connect(struct pppoe_softc *sc);

void pppoe_disconnect(struct pppoe_softc *sc);

void pppoe_disc_input(struct netif *netif, struct pbuf *p);

void pppoe_data_input(struct netif *netif, struct pbuf *p);

err_t pppoe_xmit(struct pppoe_softc *sc, struct pbuf *pb);

extern int pppoe_hdrlen;

#endif /* PPPOE_SUPPORT */

#endif /* PPP_OE_H */