1133 lines
33 KiB
C
1133 lines
33 KiB
C
/*****************************************************************************
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* ppp_oe.c - PPP Over Ethernet implementation for lwIP.
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*
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* Copyright (c) 2006 by Marc Boucher, Services Informatiques (MBSI) inc.
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice and the following disclaimer are included verbatim in any
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* distributions. No written agreement, license, or royalty fee is required
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* for any of the authorized uses.
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*
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* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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* REVISION HISTORY
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*
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* 06-01-01 Marc Boucher <marc@mbsi.ca>
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* Ported to lwIP.
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*****************************************************************************/
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/* based on NetBSD: if_pppoe.c,v 1.64 2006/01/31 23:50:15 martin Exp */
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/*-
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Martin Husemann <martin@NetBSD.org>.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "lwip/opt.h"
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#if PPPOE_SUPPORT /* don't build if not configured for use in lwipopts.h */
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#include "netif/ppp_oe.h"
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#include "ppp.h"
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#include "pppdebug.h"
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#include "lwip/timers.h"
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#include "lwip/memp.h"
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#include <string.h>
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#include <stdio.h>
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/* Add a 16 bit unsigned value to a buffer pointed to by PTR */
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#define PPPOE_ADD_16(PTR, VAL) \
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*(PTR)++ = (u8_t)((VAL) / 256); \
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*(PTR)++ = (u8_t)((VAL) % 256)
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/* Add a complete PPPoE header to the buffer pointed to by PTR */
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#define PPPOE_ADD_HEADER(PTR, CODE, SESS, LEN) \
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*(PTR)++ = PPPOE_VERTYPE; \
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*(PTR)++ = (CODE); \
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PPPOE_ADD_16(PTR, SESS); \
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PPPOE_ADD_16(PTR, LEN)
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#define PPPOE_DISC_TIMEOUT (5*1000) /* base for quick timeout calculation */
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#define PPPOE_SLOW_RETRY (60*1000) /* persistent retry interval */
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#define PPPOE_DISC_MAXPADI 4 /* retry PADI four times (quickly) */
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#define PPPOE_DISC_MAXPADR 2 /* retry PADR twice */
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#ifdef PPPOE_SERVER
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#error "PPPOE_SERVER is not yet supported under lwIP!"
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/* from if_spppsubr.c */
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#define IFF_PASSIVE IFF_LINK0 /* wait passively for connection */
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#endif
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#ifndef PPPOE_ERRORSTRING_LEN
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#define PPPOE_ERRORSTRING_LEN 64
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#endif
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static char pppoe_error_tmp[PPPOE_ERRORSTRING_LEN];
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/* input routines */
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static void pppoe_dispatch_disc_pkt(struct netif *, struct pbuf *);
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/* management routines */
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static int pppoe_do_disconnect(struct pppoe_softc *);
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static void pppoe_abort_connect(struct pppoe_softc *);
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static void pppoe_clear_softc(struct pppoe_softc *, const char *);
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/* internal timeout handling */
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static void pppoe_timeout(void *);
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/* sending actual protocol controll packets */
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static err_t pppoe_send_padi(struct pppoe_softc *);
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static err_t pppoe_send_padr(struct pppoe_softc *);
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#ifdef PPPOE_SERVER
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static err_t pppoe_send_pado(struct pppoe_softc *);
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static err_t pppoe_send_pads(struct pppoe_softc *);
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#endif
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static err_t pppoe_send_padt(struct netif *, u_int, const u8_t *);
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/* internal helper functions */
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static struct pppoe_softc * pppoe_find_softc_by_session(u_int, struct netif *);
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static struct pppoe_softc * pppoe_find_softc_by_hunique(u8_t *, size_t, struct netif *);
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/** linked list of created pppoe interfaces */
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static struct pppoe_softc *pppoe_softc_list;
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err_t
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pppoe_create(struct netif *ethif, int pd, void (*linkStatusCB)(int pd, int up), struct pppoe_softc **scptr)
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{
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struct pppoe_softc *sc;
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sc = (struct pppoe_softc *)memp_malloc(MEMP_PPPOE_IF);
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if (sc == NULL) {
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*scptr = NULL;
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return ERR_MEM;
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}
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memset(sc, 0, sizeof(struct pppoe_softc));
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/* changed to real address later */
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MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
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sc->sc_pd = pd;
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sc->sc_linkStatusCB = linkStatusCB;
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sc->sc_ethif = ethif;
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/* put the new interface at the head of the list */
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sc->next = pppoe_softc_list;
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pppoe_softc_list = sc;
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*scptr = sc;
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return ERR_OK;
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}
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err_t
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pppoe_destroy(struct netif *ifp)
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{
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struct pppoe_softc *sc, *prev = NULL;
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for (sc = pppoe_softc_list; sc != NULL; prev = sc, sc = sc->next) {
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if (sc->sc_ethif == ifp) {
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break;
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}
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}
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if(!(sc && (sc->sc_ethif == ifp))) {
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return ERR_IF;
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}
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sys_untimeout(pppoe_timeout, sc);
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if (prev == NULL) {
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/* remove sc from the head of the list */
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pppoe_softc_list = sc->next;
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} else {
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/* remove sc from the list */
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prev->next = sc->next;
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}
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#ifdef PPPOE_TODO
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if (sc->sc_concentrator_name) {
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mem_free(sc->sc_concentrator_name);
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}
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if (sc->sc_service_name) {
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mem_free(sc->sc_service_name);
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}
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#endif /* PPPOE_TODO */
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memp_free(MEMP_PPPOE_IF, sc);
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return ERR_OK;
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}
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/*
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* Find the interface handling the specified session.
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* Note: O(number of sessions open), this is a client-side only, mean
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* and lean implementation, so number of open sessions typically should
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* be 1.
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*/
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static struct pppoe_softc *
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pppoe_find_softc_by_session(u_int session, struct netif *rcvif)
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{
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struct pppoe_softc *sc;
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if (session == 0) {
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return NULL;
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}
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for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
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if (sc->sc_state == PPPOE_STATE_SESSION
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&& sc->sc_session == session) {
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if (sc->sc_ethif == rcvif) {
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return sc;
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} else {
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return NULL;
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}
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}
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}
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return NULL;
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}
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/* Check host unique token passed and return appropriate softc pointer,
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* or NULL if token is bogus. */
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static struct pppoe_softc *
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pppoe_find_softc_by_hunique(u8_t *token, size_t len, struct netif *rcvif)
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{
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struct pppoe_softc *sc, *t;
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if (pppoe_softc_list == NULL) {
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return NULL;
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}
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if (len != sizeof sc) {
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return NULL;
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}
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MEMCPY(&t, token, len);
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for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
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if (sc == t) {
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break;
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}
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}
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if (sc == NULL) {
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PPPDEBUG(LOG_DEBUG, ("pppoe: alien host unique tag, no session found\n"));
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return NULL;
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}
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/* should be safe to access *sc now */
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if (sc->sc_state < PPPOE_STATE_PADI_SENT || sc->sc_state >= PPPOE_STATE_SESSION) {
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printf("%c%c%"U16_F": host unique tag found, but it belongs to a connection in state %d\n",
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sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, sc->sc_state);
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return NULL;
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}
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if (sc->sc_ethif != rcvif) {
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printf("%c%c%"U16_F": wrong interface, not accepting host unique\n",
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sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
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return NULL;
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}
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return sc;
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}
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static void
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pppoe_linkstatus_up(struct pppoe_softc *sc)
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{
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sc->sc_linkStatusCB(sc->sc_pd, 1);
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}
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/* analyze and handle a single received packet while not in session state */
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static void
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pppoe_dispatch_disc_pkt(struct netif *netif, struct pbuf *pb)
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{
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u16_t tag, len;
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u16_t session, plen;
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struct pppoe_softc *sc;
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const char *err_msg;
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char devname[6];
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u8_t *ac_cookie;
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u16_t ac_cookie_len;
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#ifdef PPPOE_SERVER
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u8_t *hunique;
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size_t hunique_len;
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#endif
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struct pppoehdr *ph;
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struct pppoetag pt;
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int off, err, errortag;
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struct eth_hdr *ethhdr;
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pb = pppSingleBuf(pb);
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strcpy(devname, "pppoe"); /* as long as we don't know which instance */
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err_msg = NULL;
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errortag = 0;
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if (pb->len < sizeof(*ethhdr)) {
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goto done;
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}
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ethhdr = (struct eth_hdr *)pb->payload;
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off = sizeof(*ethhdr);
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ac_cookie = NULL;
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ac_cookie_len = 0;
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#ifdef PPPOE_SERVER
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hunique = NULL;
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hunique_len = 0;
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#endif
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session = 0;
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if (pb->len - off < PPPOE_HEADERLEN) {
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printf("pppoe: packet too short: %d\n", pb->len);
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goto done;
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}
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ph = (struct pppoehdr *) (ethhdr + 1);
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if (ph->vertype != PPPOE_VERTYPE) {
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printf("pppoe: unknown version/type packet: 0x%x\n", ph->vertype);
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goto done;
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}
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session = ntohs(ph->session);
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plen = ntohs(ph->plen);
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off += sizeof(*ph);
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if (plen + off > pb->len) {
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printf("pppoe: packet content does not fit: data available = %d, packet size = %u\n",
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pb->len - off, plen);
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goto done;
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}
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if(pb->tot_len == pb->len) {
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pb->tot_len = pb->len = (u16_t)off + plen; /* ignore trailing garbage */
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}
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tag = 0;
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len = 0;
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sc = NULL;
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while (off + sizeof(pt) <= pb->len) {
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MEMCPY(&pt, (u8_t*)pb->payload + off, sizeof(pt));
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tag = ntohs(pt.tag);
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len = ntohs(pt.len);
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if (off + sizeof(pt) + len > pb->len) {
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printf("pppoe: tag 0x%x len 0x%x is too long\n", tag, len);
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goto done;
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}
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switch (tag) {
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case PPPOE_TAG_EOL:
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goto breakbreak;
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case PPPOE_TAG_SNAME:
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break; /* ignored */
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case PPPOE_TAG_ACNAME:
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break; /* ignored */
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case PPPOE_TAG_HUNIQUE:
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if (sc != NULL) {
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break;
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}
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#ifdef PPPOE_SERVER
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hunique = (u8_t*)pb->payload + off + sizeof(pt);
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hunique_len = len;
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#endif
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sc = pppoe_find_softc_by_hunique((u8_t*)pb->payload + off + sizeof(pt), len, netif);
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if (sc != NULL) {
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snprintf(devname, sizeof(devname), "%c%c%"U16_F, sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
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}
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break;
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case PPPOE_TAG_ACCOOKIE:
|
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if (ac_cookie == NULL) {
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ac_cookie = (u8_t*)pb->payload + off + sizeof(pt);
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ac_cookie_len = len;
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}
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break;
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case PPPOE_TAG_SNAME_ERR:
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err_msg = "SERVICE NAME ERROR";
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errortag = 1;
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break;
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case PPPOE_TAG_ACSYS_ERR:
|
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err_msg = "AC SYSTEM ERROR";
|
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errortag = 1;
|
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break;
|
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case PPPOE_TAG_GENERIC_ERR:
|
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err_msg = "GENERIC ERROR";
|
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errortag = 1;
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break;
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}
|
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if (err_msg) {
|
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if (errortag && len) {
|
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u16_t error_len = LWIP_MIN(len, sizeof(pppoe_error_tmp)-1);
|
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strncpy(pppoe_error_tmp, (char*)pb->payload + off + sizeof(pt), error_len);
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pppoe_error_tmp[error_len-1] = '\0';
|
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printf("%s: %s: %s\n", devname, err_msg, pppoe_error_tmp);
|
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} else {
|
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printf("%s: %s\n", devname, err_msg);
|
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}
|
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if (errortag) {
|
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goto done;
|
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}
|
|
}
|
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off += sizeof(pt) + len;
|
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}
|
|
|
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breakbreak:;
|
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switch (ph->code) {
|
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case PPPOE_CODE_PADI:
|
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#ifdef PPPOE_SERVER
|
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/*
|
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* got service name, concentrator name, and/or host unique.
|
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* ignore if we have no interfaces with IFF_PASSIVE|IFF_UP.
|
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*/
|
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if (LIST_EMPTY(&pppoe_softc_list)) {
|
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goto done;
|
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}
|
|
LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
|
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if (!(sc->sc_sppp.pp_if.if_flags & IFF_UP)) {
|
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continue;
|
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}
|
|
if (!(sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
|
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continue;
|
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}
|
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if (sc->sc_state == PPPOE_STATE_INITIAL) {
|
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break;
|
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}
|
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}
|
|
if (sc == NULL) {
|
|
/* printf("pppoe: free passive interface is not found\n"); */
|
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goto done;
|
|
}
|
|
if (hunique) {
|
|
if (sc->sc_hunique) {
|
|
mem_free(sc->sc_hunique);
|
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}
|
|
sc->sc_hunique = mem_malloc(hunique_len);
|
|
if (sc->sc_hunique == NULL) {
|
|
goto done;
|
|
}
|
|
sc->sc_hunique_len = hunique_len;
|
|
MEMCPY(sc->sc_hunique, hunique, hunique_len);
|
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}
|
|
MEMCPY(&sc->sc_dest, eh->ether_shost, sizeof sc->sc_dest);
|
|
sc->sc_state = PPPOE_STATE_PADO_SENT;
|
|
pppoe_send_pado(sc);
|
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break;
|
|
#endif /* PPPOE_SERVER */
|
|
case PPPOE_CODE_PADR:
|
|
#ifdef PPPOE_SERVER
|
|
/*
|
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* get sc from ac_cookie if IFF_PASSIVE
|
|
*/
|
|
if (ac_cookie == NULL) {
|
|
/* be quiet if there is not a single pppoe instance */
|
|
printf("pppoe: received PADR but not includes ac_cookie\n");
|
|
goto done;
|
|
}
|
|
sc = pppoe_find_softc_by_hunique(ac_cookie, ac_cookie_len, netif);
|
|
if (sc == NULL) {
|
|
/* be quiet if there is not a single pppoe instance */
|
|
if (!LIST_EMPTY(&pppoe_softc_list)) {
|
|
printf("pppoe: received PADR but could not find request for it\n");
|
|
}
|
|
goto done;
|
|
}
|
|
if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
|
|
printf("%c%c%"U16_F": received unexpected PADR\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
|
|
goto done;
|
|
}
|
|
if (hunique) {
|
|
if (sc->sc_hunique) {
|
|
mem_free(sc->sc_hunique);
|
|
}
|
|
sc->sc_hunique = mem_malloc(hunique_len);
|
|
if (sc->sc_hunique == NULL) {
|
|
goto done;
|
|
}
|
|
sc->sc_hunique_len = hunique_len;
|
|
MEMCPY(sc->sc_hunique, hunique, hunique_len);
|
|
}
|
|
pppoe_send_pads(sc);
|
|
sc->sc_state = PPPOE_STATE_SESSION;
|
|
pppoe_linkstatus_up(sc); /* notify upper layers */
|
|
break;
|
|
#else
|
|
/* ignore, we are no access concentrator */
|
|
goto done;
|
|
#endif /* PPPOE_SERVER */
|
|
case PPPOE_CODE_PADO:
|
|
if (sc == NULL) {
|
|
/* be quiet if there is not a single pppoe instance */
|
|
if (pppoe_softc_list != NULL) {
|
|
printf("pppoe: received PADO but could not find request for it\n");
|
|
}
|
|
goto done;
|
|
}
|
|
if (sc->sc_state != PPPOE_STATE_PADI_SENT) {
|
|
printf("%c%c%"U16_F": received unexpected PADO\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
|
|
goto done;
|
|
}
|
|
if (ac_cookie) {
|
|
sc->sc_ac_cookie_len = ac_cookie_len;
|
|
MEMCPY(sc->sc_ac_cookie, ac_cookie, ac_cookie_len);
|
|
}
|
|
MEMCPY(&sc->sc_dest, ethhdr->src.addr, sizeof(sc->sc_dest.addr));
|
|
sys_untimeout(pppoe_timeout, sc);
|
|
sc->sc_padr_retried = 0;
|
|
sc->sc_state = PPPOE_STATE_PADR_SENT;
|
|
if ((err = pppoe_send_padr(sc)) != 0) {
|
|
PPPDEBUG(LOG_DEBUG, ("pppoe: %c%c%"U16_F": failed to send PADR, error=%d\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, err));
|
|
}
|
|
sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
|
|
break;
|
|
case PPPOE_CODE_PADS:
|
|
if (sc == NULL) {
|
|
goto done;
|
|
}
|
|
sc->sc_session = session;
|
|
sys_untimeout(pppoe_timeout, sc);
|
|
PPPDEBUG(LOG_DEBUG, ("pppoe: %c%c%"U16_F": session 0x%x connected\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, session));
|
|
sc->sc_state = PPPOE_STATE_SESSION;
|
|
pppoe_linkstatus_up(sc); /* notify upper layers */
|
|
break;
|
|
case PPPOE_CODE_PADT:
|
|
if (sc == NULL) {
|
|
goto done;
|
|
}
|
|
pppoe_clear_softc(sc, "received PADT");
|
|
break;
|
|
default:
|
|
if(sc) {
|
|
printf("%c%c%"U16_F": unknown code (0x%"X16_F") session = 0x%"X16_F"\n",
|
|
sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
|
|
(u16_t)ph->code, session);
|
|
} else {
|
|
printf("pppoe: unknown code (0x%"X16_F") session = 0x%"X16_F"\n", (u16_t)ph->code, session);
|
|
}
|
|
break;
|
|
}
|
|
|
|
done:
|
|
pbuf_free(pb);
|
|
return;
|
|
}
|
|
|
|
void
|
|
pppoe_disc_input(struct netif *netif, struct pbuf *p)
|
|
{
|
|
/* avoid error messages if there is not a single pppoe instance */
|
|
if (pppoe_softc_list != NULL) {
|
|
pppoe_dispatch_disc_pkt(netif, p);
|
|
} else {
|
|
pbuf_free(p);
|
|
}
|
|
}
|
|
|
|
void
|
|
pppoe_data_input(struct netif *netif, struct pbuf *pb)
|
|
{
|
|
u16_t session, plen;
|
|
struct pppoe_softc *sc;
|
|
struct pppoehdr *ph;
|
|
#ifdef PPPOE_TERM_UNKNOWN_SESSIONS
|
|
u8_t shost[ETHER_ADDR_LEN];
|
|
#endif
|
|
|
|
#ifdef PPPOE_TERM_UNKNOWN_SESSIONS
|
|
MEMCPY(shost, ((struct eth_hdr *)pb->payload)->src.addr, sizeof(shost));
|
|
#endif
|
|
if (pbuf_header(pb, -(int)sizeof(struct eth_hdr)) != 0) {
|
|
/* bail out */
|
|
PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header failed\n"));
|
|
LINK_STATS_INC(link.lenerr);
|
|
goto drop;
|
|
}
|
|
|
|
pb = pppSingleBuf (pb);
|
|
|
|
if (pb->len <= PPPOE_HEADERLEN) {
|
|
printf("pppoe (data): dropping too short packet: %d bytes\n", pb->len);
|
|
goto drop;
|
|
}
|
|
|
|
if (pb->len < sizeof(*ph)) {
|
|
printf("pppoe_data_input: could not get PPPoE header\n");
|
|
goto drop;
|
|
}
|
|
ph = (struct pppoehdr *)pb->payload;
|
|
|
|
if (ph->vertype != PPPOE_VERTYPE) {
|
|
printf("pppoe (data): unknown version/type packet: 0x%x\n", ph->vertype);
|
|
goto drop;
|
|
}
|
|
if (ph->code != 0) {
|
|
goto drop;
|
|
}
|
|
|
|
session = ntohs(ph->session);
|
|
sc = pppoe_find_softc_by_session(session, netif);
|
|
if (sc == NULL) {
|
|
#ifdef PPPOE_TERM_UNKNOWN_SESSIONS
|
|
printf("pppoe: input for unknown session 0x%x, sending PADT\n", session);
|
|
pppoe_send_padt(netif, session, shost);
|
|
#endif
|
|
goto drop;
|
|
}
|
|
|
|
plen = ntohs(ph->plen);
|
|
|
|
if (pbuf_header(pb, -(int)(PPPOE_HEADERLEN)) != 0) {
|
|
/* bail out */
|
|
PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header PPPOE_HEADERLEN failed\n"));
|
|
LINK_STATS_INC(link.lenerr);
|
|
goto drop;
|
|
}
|
|
|
|
PPPDEBUG(LOG_DEBUG, ("pppoe_data_input: %c%c%"U16_F": pkthdr.len=%d, pppoe.len=%d\n",
|
|
sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
|
|
pb->len, plen));
|
|
|
|
if (pb->len < plen) {
|
|
goto drop;
|
|
}
|
|
|
|
pppInProcOverEthernet(sc->sc_pd, pb);
|
|
|
|
return;
|
|
|
|
drop:
|
|
pbuf_free(pb);
|
|
}
|
|
|
|
static err_t
|
|
pppoe_output(struct pppoe_softc *sc, struct pbuf *pb)
|
|
{
|
|
struct eth_hdr *ethhdr;
|
|
u16_t etype;
|
|
err_t res;
|
|
|
|
if (!sc->sc_ethif) {
|
|
pbuf_free(pb);
|
|
return ERR_IF;
|
|
}
|
|
|
|
ethhdr = (struct eth_hdr *)pb->payload;
|
|
etype = sc->sc_state == PPPOE_STATE_SESSION ? ETHTYPE_PPPOE : ETHTYPE_PPPOEDISC;
|
|
ethhdr->type = htons(etype);
|
|
MEMCPY(ethhdr->dest.addr, sc->sc_dest.addr, sizeof(ethhdr->dest.addr));
|
|
MEMCPY(ethhdr->src.addr, ((struct eth_addr *)sc->sc_ethif->hwaddr)->addr, sizeof(ethhdr->src.addr));
|
|
|
|
PPPDEBUG(LOG_DEBUG, ("pppoe: %c%c%"U16_F" (%x) state=%d, session=0x%x output -> %02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F", len=%d\n",
|
|
sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, etype,
|
|
sc->sc_state, sc->sc_session,
|
|
sc->sc_dest.addr[0], sc->sc_dest.addr[1], sc->sc_dest.addr[2], sc->sc_dest.addr[3], sc->sc_dest.addr[4], sc->sc_dest.addr[5],
|
|
pb->tot_len));
|
|
|
|
res = sc->sc_ethif->linkoutput(sc->sc_ethif, pb);
|
|
|
|
pbuf_free(pb);
|
|
|
|
return res;
|
|
}
|
|
|
|
static err_t
|
|
pppoe_send_padi(struct pppoe_softc *sc)
|
|
{
|
|
struct pbuf *pb;
|
|
u8_t *p;
|
|
int len;
|
|
#ifdef PPPOE_TODO
|
|
int l1 = 0, l2 = 0; /* XXX: gcc */
|
|
#endif /* PPPOE_TODO */
|
|
|
|
if (sc->sc_state >PPPOE_STATE_PADI_SENT) {
|
|
PPPDEBUG(LOG_ERR, ("ERROR: pppoe_send_padi in state %d", sc->sc_state));
|
|
}
|
|
|
|
/* calculate length of frame (excluding ethernet header + pppoe header) */
|
|
len = 2 + 2 + 2 + 2 + sizeof sc; /* service name tag is required, host unique is send too */
|
|
#ifdef PPPOE_TODO
|
|
if (sc->sc_service_name != NULL) {
|
|
l1 = (int)strlen(sc->sc_service_name);
|
|
len += l1;
|
|
}
|
|
if (sc->sc_concentrator_name != NULL) {
|
|
l2 = (int)strlen(sc->sc_concentrator_name);
|
|
len += 2 + 2 + l2;
|
|
}
|
|
#endif /* PPPOE_TODO */
|
|
LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
|
|
sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
|
|
|
|
/* allocate a buffer */
|
|
pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
|
|
if (!pb) {
|
|
return ERR_MEM;
|
|
}
|
|
LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
|
|
|
|
p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
|
|
/* fill in pkt */
|
|
PPPOE_ADD_HEADER(p, PPPOE_CODE_PADI, 0, (u16_t)len);
|
|
PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
|
|
#ifdef PPPOE_TODO
|
|
if (sc->sc_service_name != NULL) {
|
|
PPPOE_ADD_16(p, l1);
|
|
MEMCPY(p, sc->sc_service_name, l1);
|
|
p += l1;
|
|
} else
|
|
#endif /* PPPOE_TODO */
|
|
{
|
|
PPPOE_ADD_16(p, 0);
|
|
}
|
|
#ifdef PPPOE_TODO
|
|
if (sc->sc_concentrator_name != NULL) {
|
|
PPPOE_ADD_16(p, PPPOE_TAG_ACNAME);
|
|
PPPOE_ADD_16(p, l2);
|
|
MEMCPY(p, sc->sc_concentrator_name, l2);
|
|
p += l2;
|
|
}
|
|
#endif /* PPPOE_TODO */
|
|
PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
|
|
PPPOE_ADD_16(p, sizeof(sc));
|
|
MEMCPY(p, &sc, sizeof sc);
|
|
|
|
/* send pkt */
|
|
return pppoe_output(sc, pb);
|
|
}
|
|
|
|
static void
|
|
pppoe_timeout(void *arg)
|
|
{
|
|
int retry_wait, err;
|
|
struct pppoe_softc *sc = (struct pppoe_softc*)arg;
|
|
|
|
PPPDEBUG(LOG_DEBUG, ("pppoe: %c%c%"U16_F": timeout\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num));
|
|
|
|
switch (sc->sc_state) {
|
|
case PPPOE_STATE_PADI_SENT:
|
|
/*
|
|
* We have two basic ways of retrying:
|
|
* - Quick retry mode: try a few times in short sequence
|
|
* - Slow retry mode: we already had a connection successfully
|
|
* established and will try infinitely (without user
|
|
* intervention)
|
|
* We only enter slow retry mode if IFF_LINK1 (aka autodial)
|
|
* is not set.
|
|
*/
|
|
|
|
/* initialize for quick retry mode */
|
|
retry_wait = PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried);
|
|
|
|
sc->sc_padi_retried++;
|
|
if (sc->sc_padi_retried >= PPPOE_DISC_MAXPADI) {
|
|
#if 0
|
|
if ((sc->sc_sppp.pp_if.if_flags & IFF_LINK1) == 0) {
|
|
/* slow retry mode */
|
|
retry_wait = PPPOE_SLOW_RETRY;
|
|
} else
|
|
#endif
|
|
{
|
|
pppoe_abort_connect(sc);
|
|
return;
|
|
}
|
|
}
|
|
if ((err = pppoe_send_padi(sc)) != 0) {
|
|
sc->sc_padi_retried--;
|
|
PPPDEBUG(LOG_DEBUG, ("pppoe: %c%c%"U16_F": failed to transmit PADI, error=%d\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, err));
|
|
}
|
|
sys_timeout(retry_wait, pppoe_timeout, sc);
|
|
break;
|
|
|
|
case PPPOE_STATE_PADR_SENT:
|
|
sc->sc_padr_retried++;
|
|
if (sc->sc_padr_retried >= PPPOE_DISC_MAXPADR) {
|
|
MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
|
|
sc->sc_state = PPPOE_STATE_PADI_SENT;
|
|
sc->sc_padr_retried = 0;
|
|
if ((err = pppoe_send_padi(sc)) != 0) {
|
|
PPPDEBUG(LOG_DEBUG, ("pppoe: %c%c%"U16_F": failed to send PADI, error=%d\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, err));
|
|
}
|
|
sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried), pppoe_timeout, sc);
|
|
return;
|
|
}
|
|
if ((err = pppoe_send_padr(sc)) != 0) {
|
|
sc->sc_padr_retried--;
|
|
PPPDEBUG(LOG_DEBUG, ("pppoe: %c%c%"U16_F": failed to send PADR, error=%d\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, err));
|
|
}
|
|
sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
|
|
break;
|
|
case PPPOE_STATE_CLOSING:
|
|
pppoe_do_disconnect(sc);
|
|
break;
|
|
default:
|
|
return; /* all done, work in peace */
|
|
}
|
|
}
|
|
|
|
/* Start a connection (i.e. initiate discovery phase) */
|
|
int
|
|
pppoe_connect(struct pppoe_softc *sc)
|
|
{
|
|
int err;
|
|
|
|
if (sc->sc_state != PPPOE_STATE_INITIAL) {
|
|
return EBUSY;
|
|
}
|
|
|
|
#ifdef PPPOE_SERVER
|
|
/* wait PADI if IFF_PASSIVE */
|
|
if ((sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
|
|
return 0;
|
|
}
|
|
#endif
|
|
/* save state, in case we fail to send PADI */
|
|
sc->sc_state = PPPOE_STATE_PADI_SENT;
|
|
sc->sc_padr_retried = 0;
|
|
err = pppoe_send_padi(sc);
|
|
PPPDEBUG(LOG_DEBUG, ("pppoe: %c%c%"U16_F": failed to send PADI, error=%d\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, err));
|
|
sys_timeout(PPPOE_DISC_TIMEOUT, pppoe_timeout, sc);
|
|
return err;
|
|
}
|
|
|
|
/* disconnect */
|
|
void
|
|
pppoe_disconnect(struct pppoe_softc *sc)
|
|
{
|
|
if (sc->sc_state < PPPOE_STATE_SESSION) {
|
|
return;
|
|
}
|
|
/*
|
|
* Do not call pppoe_disconnect here, the upper layer state
|
|
* machine gets confused by this. We must return from this
|
|
* function and defer disconnecting to the timeout handler.
|
|
*/
|
|
sc->sc_state = PPPOE_STATE_CLOSING;
|
|
sys_timeout(20, pppoe_timeout, sc);
|
|
}
|
|
|
|
static int
|
|
pppoe_do_disconnect(struct pppoe_softc *sc)
|
|
{
|
|
int err;
|
|
|
|
if (sc->sc_state < PPPOE_STATE_SESSION) {
|
|
err = EBUSY;
|
|
} else {
|
|
PPPDEBUG(LOG_DEBUG, ("pppoe: %c%c%"U16_F": disconnecting\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num));
|
|
err = pppoe_send_padt(sc->sc_ethif, sc->sc_session, (const u8_t *)&sc->sc_dest);
|
|
}
|
|
|
|
/* cleanup softc */
|
|
sc->sc_state = PPPOE_STATE_INITIAL;
|
|
MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
|
|
sc->sc_ac_cookie_len = 0;
|
|
#ifdef PPPOE_SERVER
|
|
if (sc->sc_hunique) {
|
|
mem_free(sc->sc_hunique);
|
|
sc->sc_hunique = NULL;
|
|
}
|
|
sc->sc_hunique_len = 0;
|
|
#endif
|
|
sc->sc_session = 0;
|
|
|
|
sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
|
|
|
|
return err;
|
|
}
|
|
|
|
/* Connection attempt aborted */
|
|
static void
|
|
pppoe_abort_connect(struct pppoe_softc *sc)
|
|
{
|
|
printf("%c%c%"U16_F": could not establish connection\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
|
|
sc->sc_state = PPPOE_STATE_CLOSING;
|
|
|
|
sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
|
|
|
|
/* clear connection state */
|
|
MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
|
|
sc->sc_state = PPPOE_STATE_INITIAL;
|
|
}
|
|
|
|
/* Send a PADR packet */
|
|
static err_t
|
|
pppoe_send_padr(struct pppoe_softc *sc)
|
|
{
|
|
struct pbuf *pb;
|
|
u8_t *p;
|
|
size_t len;
|
|
#ifdef PPPOE_TODO
|
|
size_t l1 = 0; /* XXX: gcc */
|
|
#endif /* PPPOE_TODO */
|
|
|
|
if (sc->sc_state != PPPOE_STATE_PADR_SENT) {
|
|
return ERR_CONN;
|
|
}
|
|
|
|
len = 2 + 2 + 2 + 2 + sizeof(sc); /* service name, host unique */
|
|
#ifdef PPPOE_TODO
|
|
if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
|
|
l1 = strlen(sc->sc_service_name);
|
|
len += l1;
|
|
}
|
|
#endif /* PPPOE_TODO */
|
|
if (sc->sc_ac_cookie_len > 0) {
|
|
len += 2 + 2 + sc->sc_ac_cookie_len; /* AC cookie */
|
|
}
|
|
LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
|
|
sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
|
|
pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
|
|
if (!pb) {
|
|
return ERR_MEM;
|
|
}
|
|
LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
|
|
p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
|
|
PPPOE_ADD_HEADER(p, PPPOE_CODE_PADR, 0, len);
|
|
PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
|
|
#ifdef PPPOE_TODO
|
|
if (sc->sc_service_name != NULL) {
|
|
PPPOE_ADD_16(p, l1);
|
|
MEMCPY(p, sc->sc_service_name, l1);
|
|
p += l1;
|
|
} else
|
|
#endif /* PPPOE_TODO */
|
|
{
|
|
PPPOE_ADD_16(p, 0);
|
|
}
|
|
if (sc->sc_ac_cookie_len > 0) {
|
|
PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
|
|
PPPOE_ADD_16(p, sc->sc_ac_cookie_len);
|
|
MEMCPY(p, sc->sc_ac_cookie, sc->sc_ac_cookie_len);
|
|
p += sc->sc_ac_cookie_len;
|
|
}
|
|
PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
|
|
PPPOE_ADD_16(p, sizeof(sc));
|
|
MEMCPY(p, &sc, sizeof sc);
|
|
|
|
return pppoe_output(sc, pb);
|
|
}
|
|
|
|
/* send a PADT packet */
|
|
static err_t
|
|
pppoe_send_padt(struct netif *outgoing_if, u_int session, const u8_t *dest)
|
|
{
|
|
struct pbuf *pb;
|
|
struct eth_hdr *ethhdr;
|
|
err_t res;
|
|
u8_t *p;
|
|
|
|
pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN, PBUF_RAM);
|
|
if (!pb) {
|
|
return ERR_MEM;
|
|
}
|
|
LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
|
|
|
|
ethhdr = (struct eth_hdr *)pb->payload;
|
|
ethhdr->type = PP_HTONS(ETHTYPE_PPPOEDISC);
|
|
MEMCPY(ethhdr->dest.addr, dest, sizeof(ethhdr->dest.addr));
|
|
MEMCPY(ethhdr->src.addr, ((struct eth_addr *)outgoing_if->hwaddr)->addr, sizeof(ethhdr->src.addr));
|
|
|
|
p = (u8_t*)(ethhdr + 1);
|
|
PPPOE_ADD_HEADER(p, PPPOE_CODE_PADT, session, 0);
|
|
|
|
res = outgoing_if->linkoutput(outgoing_if, pb);
|
|
|
|
pbuf_free(pb);
|
|
|
|
return res;
|
|
}
|
|
|
|
#ifdef PPPOE_SERVER
|
|
static err_t
|
|
pppoe_send_pado(struct pppoe_softc *sc)
|
|
{
|
|
struct pbuf *pb;
|
|
u8_t *p;
|
|
size_t len;
|
|
|
|
if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
|
|
return ERR_CONN;
|
|
}
|
|
|
|
/* calc length */
|
|
len = 0;
|
|
/* include ac_cookie */
|
|
len += 2 + 2 + sizeof(sc);
|
|
/* include hunique */
|
|
len += 2 + 2 + sc->sc_hunique_len;
|
|
pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
|
|
if (!pb) {
|
|
return ERR_MEM;
|
|
}
|
|
LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
|
|
p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
|
|
PPPOE_ADD_HEADER(p, PPPOE_CODE_PADO, 0, len);
|
|
PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
|
|
PPPOE_ADD_16(p, sizeof(sc));
|
|
MEMCPY(p, &sc, sizeof(sc));
|
|
p += sizeof(sc);
|
|
PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
|
|
PPPOE_ADD_16(p, sc->sc_hunique_len);
|
|
MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
|
|
return pppoe_output(sc, pb);
|
|
}
|
|
|
|
static err_t
|
|
pppoe_send_pads(struct pppoe_softc *sc)
|
|
{
|
|
struct pbuf *pb;
|
|
u8_t *p;
|
|
size_t len, l1 = 0; /* XXX: gcc */
|
|
|
|
if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
|
|
return ERR_CONN;
|
|
}
|
|
|
|
sc->sc_session = mono_time.tv_sec % 0xff + 1;
|
|
/* calc length */
|
|
len = 0;
|
|
/* include hunique */
|
|
len += 2 + 2 + 2 + 2 + sc->sc_hunique_len; /* service name, host unique*/
|
|
if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
|
|
l1 = strlen(sc->sc_service_name);
|
|
len += l1;
|
|
}
|
|
pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
|
|
if (!pb) {
|
|
return ERR_MEM;
|
|
}
|
|
LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
|
|
p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
|
|
PPPOE_ADD_HEADER(p, PPPOE_CODE_PADS, sc->sc_session, len);
|
|
PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
|
|
if (sc->sc_service_name != NULL) {
|
|
PPPOE_ADD_16(p, l1);
|
|
MEMCPY(p, sc->sc_service_name, l1);
|
|
p += l1;
|
|
} else {
|
|
PPPOE_ADD_16(p, 0);
|
|
}
|
|
PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
|
|
PPPOE_ADD_16(p, sc->sc_hunique_len);
|
|
MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
|
|
return pppoe_output(sc, pb);
|
|
}
|
|
#endif
|
|
|
|
err_t
|
|
pppoe_xmit(struct pppoe_softc *sc, struct pbuf *pb)
|
|
{
|
|
u8_t *p;
|
|
size_t len;
|
|
|
|
/* are we ready to process data yet? */
|
|
if (sc->sc_state < PPPOE_STATE_SESSION) {
|
|
/*sppp_flush(&sc->sc_sppp.pp_if);*/
|
|
pbuf_free(pb);
|
|
return ERR_CONN;
|
|
}
|
|
|
|
len = pb->tot_len;
|
|
|
|
/* make room for Ethernet header - should not fail */
|
|
if (pbuf_header(pb, sizeof(struct eth_hdr) + PPPOE_HEADERLEN) != 0) {
|
|
/* bail out */
|
|
PPPDEBUG(LOG_ERR, ("pppoe: %c%c%"U16_F": pppoe_xmit: could not allocate room for header\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num));
|
|
LINK_STATS_INC(link.lenerr);
|
|
pbuf_free(pb);
|
|
return ERR_BUF;
|
|
}
|
|
|
|
p = (u8_t*)pb->payload + sizeof(struct eth_hdr);
|
|
PPPOE_ADD_HEADER(p, 0, sc->sc_session, len);
|
|
|
|
return pppoe_output(sc, pb);
|
|
}
|
|
|
|
#if 0 /*def PFIL_HOOKS*/
|
|
static int
|
|
pppoe_ifattach_hook(void *arg, struct pbuf **mp, struct netif *ifp, int dir)
|
|
{
|
|
struct pppoe_softc *sc;
|
|
int s;
|
|
|
|
if (mp != (struct pbuf **)PFIL_IFNET_DETACH) {
|
|
return 0;
|
|
}
|
|
|
|
LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
|
|
if (sc->sc_ethif != ifp) {
|
|
continue;
|
|
}
|
|
if (sc->sc_sppp.pp_if.if_flags & IFF_UP) {
|
|
sc->sc_sppp.pp_if.if_flags &= ~(IFF_UP|IFF_RUNNING);
|
|
printf("%c%c%"U16_F": ethernet interface detached, going down\n",
|
|
sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
|
|
}
|
|
sc->sc_ethif = NULL;
|
|
pppoe_clear_softc(sc, "ethernet interface detached");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
pppoe_clear_softc(struct pppoe_softc *sc, const char *message)
|
|
{
|
|
LWIP_UNUSED_ARG(message);
|
|
|
|
/* stop timer */
|
|
sys_untimeout(pppoe_timeout, sc);
|
|
PPPDEBUG(LOG_DEBUG, ("pppoe: %c%c%"U16_F": session 0x%x terminated, %s\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, sc->sc_session, message));
|
|
|
|
/* fix our state */
|
|
sc->sc_state = PPPOE_STATE_INITIAL;
|
|
|
|
/* notify upper layers */
|
|
sc->sc_linkStatusCB(sc->sc_pd, 0);
|
|
|
|
/* clean up softc */
|
|
MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
|
|
sc->sc_ac_cookie_len = 0;
|
|
sc->sc_session = 0;
|
|
}
|
|
|
|
#endif /* PPPOE_SUPPORT */
|
|
|