TCPSpeedTest - I have a problem getting this to work. Server onl…

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Jesper Taxbøl / Mbed 2 deprecated TCPSpeedTest

I have a problem getting this to work. Server only recieves half of the data being sent. Whats wrong

lwip/netif/ppp/ppp_oe.c@0:66300c77c6e9, 2011-03-29 (annotated)

Committer:: tax
Date:: Tue Mar 29 13:20:15 2011 +0000
Revision:: 0:66300c77c6e9

Who changed what in which revision?

User	Revision	Line number	New contents of line
tax	0:66300c77c6e9	1	/*****************************************************************************
tax	0:66300c77c6e9	2	* ppp_oe.c - PPP Over Ethernet implementation for lwIP.
tax	0:66300c77c6e9	3	*
tax	0:66300c77c6e9	4	* Copyright (c) 2006 by Marc Boucher, Services Informatiques (MBSI) inc.
tax	0:66300c77c6e9	5	*
tax	0:66300c77c6e9	6	* The authors hereby grant permission to use, copy, modify, distribute,
tax	0:66300c77c6e9	7	* and license this software and its documentation for any purpose, provided
tax	0:66300c77c6e9	8	* that existing copyright notices are retained in all copies and that this
tax	0:66300c77c6e9	9	* notice and the following disclaimer are included verbatim in any
tax	0:66300c77c6e9	10	* distributions. No written agreement, license, or royalty fee is required
tax	0:66300c77c6e9	11	* for any of the authorized uses.
tax	0:66300c77c6e9	12	*
tax	0:66300c77c6e9	13	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
tax	0:66300c77c6e9	14	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
tax	0:66300c77c6e9	15	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
tax	0:66300c77c6e9	16	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
tax	0:66300c77c6e9	17	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
tax	0:66300c77c6e9	18	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
tax	0:66300c77c6e9	19	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
tax	0:66300c77c6e9	20	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
tax	0:66300c77c6e9	21	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
tax	0:66300c77c6e9	22	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
tax	0:66300c77c6e9	23	*
tax	0:66300c77c6e9	24	******************************************************************************
tax	0:66300c77c6e9	25	* REVISION HISTORY
tax	0:66300c77c6e9	26	*
tax	0:66300c77c6e9	27	* 06-01-01 Marc Boucher <marc@mbsi.ca>
tax	0:66300c77c6e9	28	* Ported to lwIP.
tax	0:66300c77c6e9	29	*****************************************************************************/
tax	0:66300c77c6e9	30
tax	0:66300c77c6e9	31
tax	0:66300c77c6e9	32
tax	0:66300c77c6e9	33	/* based on NetBSD: if_pppoe.c,v 1.64 2006/01/31 23:50:15 martin Exp */
tax	0:66300c77c6e9	34
tax	0:66300c77c6e9	35	/*-
tax	0:66300c77c6e9	36	* Copyright (c) 2002 The NetBSD Foundation, Inc.
tax	0:66300c77c6e9	37	* All rights reserved.
tax	0:66300c77c6e9	38	*
tax	0:66300c77c6e9	39	* This code is derived from software contributed to The NetBSD Foundation
tax	0:66300c77c6e9	40	* by Martin Husemann <martin@NetBSD.org>.
tax	0:66300c77c6e9	41	*
tax	0:66300c77c6e9	42	* Redistribution and use in source and binary forms, with or without
tax	0:66300c77c6e9	43	* modification, are permitted provided that the following conditions
tax	0:66300c77c6e9	44	* are met:
tax	0:66300c77c6e9	45	* 1. Redistributions of source code must retain the above copyright
tax	0:66300c77c6e9	46	* notice, this list of conditions and the following disclaimer.
tax	0:66300c77c6e9	47	* 2. Redistributions in binary form must reproduce the above copyright
tax	0:66300c77c6e9	48	* notice, this list of conditions and the following disclaimer in the
tax	0:66300c77c6e9	49	* documentation and/or other materials provided with the distribution.
tax	0:66300c77c6e9	50	* 3. All advertising materials mentioning features or use of this software
tax	0:66300c77c6e9	51	* must display the following acknowledgement:
tax	0:66300c77c6e9	52	* This product includes software developed by the NetBSD
tax	0:66300c77c6e9	53	* Foundation, Inc. and its contributors.
tax	0:66300c77c6e9	54	* 4. Neither the name of The NetBSD Foundation nor the names of its
tax	0:66300c77c6e9	55	* contributors may be used to endorse or promote products derived
tax	0:66300c77c6e9	56	* from this software without specific prior written permission.
tax	0:66300c77c6e9	57	*
tax	0:66300c77c6e9	58	* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
tax	0:66300c77c6e9	59	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
tax	0:66300c77c6e9	60	* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
tax	0:66300c77c6e9	61	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
tax	0:66300c77c6e9	62	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
tax	0:66300c77c6e9	63	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
tax	0:66300c77c6e9	64	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
tax	0:66300c77c6e9	65	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
tax	0:66300c77c6e9	66	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
tax	0:66300c77c6e9	67	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
tax	0:66300c77c6e9	68	* POSSIBILITY OF SUCH DAMAGE.
tax	0:66300c77c6e9	69	*/
tax	0:66300c77c6e9	70
tax	0:66300c77c6e9	71	#include "lwip/opt.h"
tax	0:66300c77c6e9	72
tax	0:66300c77c6e9	73	#if PPPOE_SUPPORT /* don't build if not configured for use in lwipopts.h */
tax	0:66300c77c6e9	74
tax	0:66300c77c6e9	75	#include "netif/ppp_oe.h"
tax	0:66300c77c6e9	76
tax	0:66300c77c6e9	77	#include "ppp.h"
tax	0:66300c77c6e9	78	#include "pppdebug.h"
tax	0:66300c77c6e9	79
tax	0:66300c77c6e9	80	#include "lwip/timers.h"
tax	0:66300c77c6e9	81	#include "lwip/memp.h"
tax	0:66300c77c6e9	82
tax	0:66300c77c6e9	83	#include <string.h>
tax	0:66300c77c6e9	84	#include <stdio.h>
tax	0:66300c77c6e9	85
tax	0:66300c77c6e9	86
tax	0:66300c77c6e9	87	/* Add a 16 bit unsigned value to a buffer pointed to by PTR */
tax	0:66300c77c6e9	88	#define PPPOE_ADD_16(PTR, VAL) \
tax	0:66300c77c6e9	89	*(PTR)++ = (u8_t)((VAL) / 256); \
tax	0:66300c77c6e9	90	*(PTR)++ = (u8_t)((VAL) % 256)
tax	0:66300c77c6e9	91
tax	0:66300c77c6e9	92	/* Add a complete PPPoE header to the buffer pointed to by PTR */
tax	0:66300c77c6e9	93	#define PPPOE_ADD_HEADER(PTR, CODE, SESS, LEN) \
tax	0:66300c77c6e9	94	*(PTR)++ = PPPOE_VERTYPE; \
tax	0:66300c77c6e9	95	*(PTR)++ = (CODE); \
tax	0:66300c77c6e9	96	PPPOE_ADD_16(PTR, SESS); \
tax	0:66300c77c6e9	97	PPPOE_ADD_16(PTR, LEN)
tax	0:66300c77c6e9	98
tax	0:66300c77c6e9	99	#define PPPOE_DISC_TIMEOUT (51000) / base for quick timeout calculation */
tax	0:66300c77c6e9	100	#define PPPOE_SLOW_RETRY (601000) / persistent retry interval */
tax	0:66300c77c6e9	101	#define PPPOE_DISC_MAXPADI 4 /* retry PADI four times (quickly) */
tax	0:66300c77c6e9	102	#define PPPOE_DISC_MAXPADR 2 /* retry PADR twice */
tax	0:66300c77c6e9	103
tax	0:66300c77c6e9	104	#ifdef PPPOE_SERVER
tax	0:66300c77c6e9	105	#error "PPPOE_SERVER is not yet supported under lwIP!"
tax	0:66300c77c6e9	106	/* from if_spppsubr.c */
tax	0:66300c77c6e9	107	#define IFF_PASSIVE IFF_LINK0 /* wait passively for connection */
tax	0:66300c77c6e9	108	#endif
tax	0:66300c77c6e9	109
tax	0:66300c77c6e9	110	#ifndef PPPOE_ERRORSTRING_LEN
tax	0:66300c77c6e9	111	#define PPPOE_ERRORSTRING_LEN 64
tax	0:66300c77c6e9	112	#endif
tax	0:66300c77c6e9	113	static char pppoe_error_tmp[PPPOE_ERRORSTRING_LEN];
tax	0:66300c77c6e9	114
tax	0:66300c77c6e9	115
tax	0:66300c77c6e9	116	/* input routines */
tax	0:66300c77c6e9	117	static void pppoe_dispatch_disc_pkt(struct netif , struct pbuf );
tax	0:66300c77c6e9	118
tax	0:66300c77c6e9	119	/* management routines */
tax	0:66300c77c6e9	120	static int pppoe_do_disconnect(struct pppoe_softc *);
tax	0:66300c77c6e9	121	static void pppoe_abort_connect(struct pppoe_softc *);
tax	0:66300c77c6e9	122	static void pppoe_clear_softc(struct pppoe_softc , const char );
tax	0:66300c77c6e9	123
tax	0:66300c77c6e9	124	/* internal timeout handling */
tax	0:66300c77c6e9	125	static void pppoe_timeout(void *);
tax	0:66300c77c6e9	126
tax	0:66300c77c6e9	127	/* sending actual protocol controll packets */
tax	0:66300c77c6e9	128	static err_t pppoe_send_padi(struct pppoe_softc *);
tax	0:66300c77c6e9	129	static err_t pppoe_send_padr(struct pppoe_softc *);
tax	0:66300c77c6e9	130	#ifdef PPPOE_SERVER
tax	0:66300c77c6e9	131	static err_t pppoe_send_pado(struct pppoe_softc *);
tax	0:66300c77c6e9	132	static err_t pppoe_send_pads(struct pppoe_softc *);
tax	0:66300c77c6e9	133	#endif
tax	0:66300c77c6e9	134	static err_t pppoe_send_padt(struct netif , u_int, const u8_t );
tax	0:66300c77c6e9	135
tax	0:66300c77c6e9	136	/* internal helper functions */
tax	0:66300c77c6e9	137	static struct pppoe_softc * pppoe_find_softc_by_session(u_int, struct netif *);
tax	0:66300c77c6e9	138	static struct pppoe_softc * pppoe_find_softc_by_hunique(u8_t , size_t, struct netif );
tax	0:66300c77c6e9	139
tax	0:66300c77c6e9	140	/** linked list of created pppoe interfaces */
tax	0:66300c77c6e9	141	static struct pppoe_softc *pppoe_softc_list;
tax	0:66300c77c6e9	142
tax	0:66300c77c6e9	143	err_t
tax	0:66300c77c6e9	144	pppoe_create(struct netif ethif, int pd, void (linkStatusCB)(int pd, int up), struct pppoe_softc **scptr)
tax	0:66300c77c6e9	145	{
tax	0:66300c77c6e9	146	struct pppoe_softc *sc;
tax	0:66300c77c6e9	147
tax	0:66300c77c6e9	148	sc = (struct pppoe_softc *)memp_malloc(MEMP_PPPOE_IF);
tax	0:66300c77c6e9	149	if (sc == NULL) {
tax	0:66300c77c6e9	150	*scptr = NULL;
tax	0:66300c77c6e9	151	return ERR_MEM;
tax	0:66300c77c6e9	152	}
tax	0:66300c77c6e9	153	memset(sc, 0, sizeof(struct pppoe_softc));
tax	0:66300c77c6e9	154
tax	0:66300c77c6e9	155	/* changed to real address later */
tax	0:66300c77c6e9	156	MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
tax	0:66300c77c6e9	157
tax	0:66300c77c6e9	158	sc->sc_pd = pd;
tax	0:66300c77c6e9	159	sc->sc_linkStatusCB = linkStatusCB;
tax	0:66300c77c6e9	160	sc->sc_ethif = ethif;
tax	0:66300c77c6e9	161
tax	0:66300c77c6e9	162	/* put the new interface at the head of the list */
tax	0:66300c77c6e9	163	sc->next = pppoe_softc_list;
tax	0:66300c77c6e9	164	pppoe_softc_list = sc;
tax	0:66300c77c6e9	165
tax	0:66300c77c6e9	166	*scptr = sc;
tax	0:66300c77c6e9	167
tax	0:66300c77c6e9	168	return ERR_OK;
tax	0:66300c77c6e9	169	}
tax	0:66300c77c6e9	170
tax	0:66300c77c6e9	171	err_t
tax	0:66300c77c6e9	172	pppoe_destroy(struct netif *ifp)
tax	0:66300c77c6e9	173	{
tax	0:66300c77c6e9	174	struct pppoe_softc sc, prev = NULL;
tax	0:66300c77c6e9	175
tax	0:66300c77c6e9	176	for (sc = pppoe_softc_list; sc != NULL; prev = sc, sc = sc->next) {
tax	0:66300c77c6e9	177	if (sc->sc_ethif == ifp) {
tax	0:66300c77c6e9	178	break;
tax	0:66300c77c6e9	179	}
tax	0:66300c77c6e9	180	}
tax	0:66300c77c6e9	181
tax	0:66300c77c6e9	182	if(!(sc && (sc->sc_ethif == ifp))) {
tax	0:66300c77c6e9	183	return ERR_IF;
tax	0:66300c77c6e9	184	}
tax	0:66300c77c6e9	185
tax	0:66300c77c6e9	186	sys_untimeout(pppoe_timeout, sc);
tax	0:66300c77c6e9	187	if (prev == NULL) {
tax	0:66300c77c6e9	188	/* remove sc from the head of the list */
tax	0:66300c77c6e9	189	pppoe_softc_list = sc->next;
tax	0:66300c77c6e9	190	} else {
tax	0:66300c77c6e9	191	/* remove sc from the list */
tax	0:66300c77c6e9	192	prev->next = sc->next;
tax	0:66300c77c6e9	193	}
tax	0:66300c77c6e9	194
tax	0:66300c77c6e9	195	#ifdef PPPOE_TODO
tax	0:66300c77c6e9	196	if (sc->sc_concentrator_name) {
tax	0:66300c77c6e9	197	mem_free(sc->sc_concentrator_name);
tax	0:66300c77c6e9	198	}
tax	0:66300c77c6e9	199	if (sc->sc_service_name) {
tax	0:66300c77c6e9	200	mem_free(sc->sc_service_name);
tax	0:66300c77c6e9	201	}
tax	0:66300c77c6e9	202	#endif /* PPPOE_TODO */
tax	0:66300c77c6e9	203	memp_free(MEMP_PPPOE_IF, sc);
tax	0:66300c77c6e9	204
tax	0:66300c77c6e9	205	return ERR_OK;
tax	0:66300c77c6e9	206	}
tax	0:66300c77c6e9	207
tax	0:66300c77c6e9	208	/*
tax	0:66300c77c6e9	209	* Find the interface handling the specified session.
tax	0:66300c77c6e9	210	* Note: O(number of sessions open), this is a client-side only, mean
tax	0:66300c77c6e9	211	* and lean implementation, so number of open sessions typically should
tax	0:66300c77c6e9	212	* be 1.
tax	0:66300c77c6e9	213	*/
tax	0:66300c77c6e9	214	static struct pppoe_softc *
tax	0:66300c77c6e9	215	pppoe_find_softc_by_session(u_int session, struct netif *rcvif)
tax	0:66300c77c6e9	216	{
tax	0:66300c77c6e9	217	struct pppoe_softc *sc;
tax	0:66300c77c6e9	218
tax	0:66300c77c6e9	219	if (session == 0) {
tax	0:66300c77c6e9	220	return NULL;
tax	0:66300c77c6e9	221	}
tax	0:66300c77c6e9	222
tax	0:66300c77c6e9	223	for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
tax	0:66300c77c6e9	224	if (sc->sc_state == PPPOE_STATE_SESSION
tax	0:66300c77c6e9	225	&& sc->sc_session == session) {
tax	0:66300c77c6e9	226	if (sc->sc_ethif == rcvif) {
tax	0:66300c77c6e9	227	return sc;
tax	0:66300c77c6e9	228	} else {
tax	0:66300c77c6e9	229	return NULL;
tax	0:66300c77c6e9	230	}
tax	0:66300c77c6e9	231	}
tax	0:66300c77c6e9	232	}
tax	0:66300c77c6e9	233	return NULL;
tax	0:66300c77c6e9	234	}
tax	0:66300c77c6e9	235
tax	0:66300c77c6e9	236	/* Check host unique token passed and return appropriate softc pointer,
tax	0:66300c77c6e9	237	* or NULL if token is bogus. */
tax	0:66300c77c6e9	238	static struct pppoe_softc *
tax	0:66300c77c6e9	239	pppoe_find_softc_by_hunique(u8_t token, size_t len, struct netif rcvif)
tax	0:66300c77c6e9	240	{
tax	0:66300c77c6e9	241	struct pppoe_softc sc, t;
tax	0:66300c77c6e9	242
tax	0:66300c77c6e9	243	if (pppoe_softc_list == NULL) {
tax	0:66300c77c6e9	244	return NULL;
tax	0:66300c77c6e9	245	}
tax	0:66300c77c6e9	246
tax	0:66300c77c6e9	247	if (len != sizeof sc) {
tax	0:66300c77c6e9	248	return NULL;
tax	0:66300c77c6e9	249	}
tax	0:66300c77c6e9	250	MEMCPY(&t, token, len);
tax	0:66300c77c6e9	251
tax	0:66300c77c6e9	252	for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
tax	0:66300c77c6e9	253	if (sc == t) {
tax	0:66300c77c6e9	254	break;
tax	0:66300c77c6e9	255	}
tax	0:66300c77c6e9	256	}
tax	0:66300c77c6e9	257
tax	0:66300c77c6e9	258	if (sc == NULL) {
tax	0:66300c77c6e9	259	PPPDEBUG(LOG_DEBUG, ("pppoe: alien host unique tag, no session found\n"));
tax	0:66300c77c6e9	260	return NULL;
tax	0:66300c77c6e9	261	}
tax	0:66300c77c6e9	262
tax	0:66300c77c6e9	263	/* should be safe to access sc now /
tax	0:66300c77c6e9	264	if (sc->sc_state < PPPOE_STATE_PADI_SENT \|\| sc->sc_state >= PPPOE_STATE_SESSION) {
tax	0:66300c77c6e9	265	printf("%c%c%"U16_F": host unique tag found, but it belongs to a connection in state %d\n",
tax	0:66300c77c6e9	266	sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, sc->sc_state);
tax	0:66300c77c6e9	267	return NULL;
tax	0:66300c77c6e9	268	}
tax	0:66300c77c6e9	269	if (sc->sc_ethif != rcvif) {
tax	0:66300c77c6e9	270	printf("%c%c%"U16_F": wrong interface, not accepting host unique\n",
tax	0:66300c77c6e9	271	sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
tax	0:66300c77c6e9	272	return NULL;
tax	0:66300c77c6e9	273	}
tax	0:66300c77c6e9	274	return sc;
tax	0:66300c77c6e9	275	}
tax	0:66300c77c6e9	276
tax	0:66300c77c6e9	277	static void
tax	0:66300c77c6e9	278	pppoe_linkstatus_up(struct pppoe_softc *sc)
tax	0:66300c77c6e9	279	{
tax	0:66300c77c6e9	280	sc->sc_linkStatusCB(sc->sc_pd, 1);
tax	0:66300c77c6e9	281	}
tax	0:66300c77c6e9	282
tax	0:66300c77c6e9	283	/* analyze and handle a single received packet while not in session state */
tax	0:66300c77c6e9	284	static void
tax	0:66300c77c6e9	285	pppoe_dispatch_disc_pkt(struct netif netif, struct pbuf pb)
tax	0:66300c77c6e9	286	{
tax	0:66300c77c6e9	287	u16_t tag, len;
tax	0:66300c77c6e9	288	u16_t session, plen;
tax	0:66300c77c6e9	289	struct pppoe_softc *sc;
tax	0:66300c77c6e9	290	const char *err_msg;
tax	0:66300c77c6e9	291	char devname[6];
tax	0:66300c77c6e9	292	u8_t *ac_cookie;
tax	0:66300c77c6e9	293	u16_t ac_cookie_len;
tax	0:66300c77c6e9	294	#ifdef PPPOE_SERVER
tax	0:66300c77c6e9	295	u8_t *hunique;
tax	0:66300c77c6e9	296	size_t hunique_len;
tax	0:66300c77c6e9	297	#endif
tax	0:66300c77c6e9	298	struct pppoehdr *ph;
tax	0:66300c77c6e9	299	struct pppoetag pt;
tax	0:66300c77c6e9	300	int off, err, errortag;
tax	0:66300c77c6e9	301	struct eth_hdr *ethhdr;
tax	0:66300c77c6e9	302
tax	0:66300c77c6e9	303	pb = pppSingleBuf(pb);
tax	0:66300c77c6e9	304
tax	0:66300c77c6e9	305	strcpy(devname, "pppoe"); /* as long as we don't know which instance */
tax	0:66300c77c6e9	306	err_msg = NULL;
tax	0:66300c77c6e9	307	errortag = 0;
tax	0:66300c77c6e9	308	if (pb->len < sizeof(*ethhdr)) {
tax	0:66300c77c6e9	309	goto done;
tax	0:66300c77c6e9	310	}
tax	0:66300c77c6e9	311	ethhdr = (struct eth_hdr *)pb->payload;
tax	0:66300c77c6e9	312	off = sizeof(*ethhdr);
tax	0:66300c77c6e9	313
tax	0:66300c77c6e9	314	ac_cookie = NULL;
tax	0:66300c77c6e9	315	ac_cookie_len = 0;
tax	0:66300c77c6e9	316	#ifdef PPPOE_SERVER
tax	0:66300c77c6e9	317	hunique = NULL;
tax	0:66300c77c6e9	318	hunique_len = 0;
tax	0:66300c77c6e9	319	#endif
tax	0:66300c77c6e9	320	session = 0;
tax	0:66300c77c6e9	321	if (pb->len - off < PPPOE_HEADERLEN) {
tax	0:66300c77c6e9	322	printf("pppoe: packet too short: %d\n", pb->len);
tax	0:66300c77c6e9	323	goto done;
tax	0:66300c77c6e9	324	}
tax	0:66300c77c6e9	325
tax	0:66300c77c6e9	326	ph = (struct pppoehdr *) (ethhdr + 1);
tax	0:66300c77c6e9	327	if (ph->vertype != PPPOE_VERTYPE) {
tax	0:66300c77c6e9	328	printf("pppoe: unknown version/type packet: 0x%x\n", ph->vertype);
tax	0:66300c77c6e9	329	goto done;
tax	0:66300c77c6e9	330	}
tax	0:66300c77c6e9	331	session = ntohs(ph->session);
tax	0:66300c77c6e9	332	plen = ntohs(ph->plen);
tax	0:66300c77c6e9	333	off += sizeof(*ph);
tax	0:66300c77c6e9	334
tax	0:66300c77c6e9	335	if (plen + off > pb->len) {
tax	0:66300c77c6e9	336	printf("pppoe: packet content does not fit: data available = %d, packet size = %u\n",
tax	0:66300c77c6e9	337	pb->len - off, plen);
tax	0:66300c77c6e9	338	goto done;
tax	0:66300c77c6e9	339	}
tax	0:66300c77c6e9	340	if(pb->tot_len == pb->len) {
tax	0:66300c77c6e9	341	pb->tot_len = pb->len = (u16_t)off + plen; /* ignore trailing garbage */
tax	0:66300c77c6e9	342	}
tax	0:66300c77c6e9	343	tag = 0;
tax	0:66300c77c6e9	344	len = 0;
tax	0:66300c77c6e9	345	sc = NULL;
tax	0:66300c77c6e9	346	while (off + sizeof(pt) <= pb->len) {
tax	0:66300c77c6e9	347	MEMCPY(&pt, (u8_t*)pb->payload + off, sizeof(pt));
tax	0:66300c77c6e9	348	tag = ntohs(pt.tag);
tax	0:66300c77c6e9	349	len = ntohs(pt.len);
tax	0:66300c77c6e9	350	if (off + sizeof(pt) + len > pb->len) {
tax	0:66300c77c6e9	351	printf("pppoe: tag 0x%x len 0x%x is too long\n", tag, len);
tax	0:66300c77c6e9	352	goto done;
tax	0:66300c77c6e9	353	}
tax	0:66300c77c6e9	354	switch (tag) {
tax	0:66300c77c6e9	355	case PPPOE_TAG_EOL:
tax	0:66300c77c6e9	356	goto breakbreak;
tax	0:66300c77c6e9	357	case PPPOE_TAG_SNAME:
tax	0:66300c77c6e9	358	break; /* ignored */
tax	0:66300c77c6e9	359	case PPPOE_TAG_ACNAME:
tax	0:66300c77c6e9	360	break; /* ignored */
tax	0:66300c77c6e9	361	case PPPOE_TAG_HUNIQUE:
tax	0:66300c77c6e9	362	if (sc != NULL) {
tax	0:66300c77c6e9	363	break;
tax	0:66300c77c6e9	364	}
tax	0:66300c77c6e9	365	#ifdef PPPOE_SERVER
tax	0:66300c77c6e9	366	hunique = (u8_t*)pb->payload + off + sizeof(pt);
tax	0:66300c77c6e9	367	hunique_len = len;
tax	0:66300c77c6e9	368	#endif
tax	0:66300c77c6e9	369	sc = pppoe_find_softc_by_hunique((u8_t*)pb->payload + off + sizeof(pt), len, netif);
tax	0:66300c77c6e9	370	if (sc != NULL) {
tax	0:66300c77c6e9	371	snprintf(devname, sizeof(devname), "%c%c%"U16_F, sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
tax	0:66300c77c6e9	372	}
tax	0:66300c77c6e9	373	break;
tax	0:66300c77c6e9	374	case PPPOE_TAG_ACCOOKIE:
tax	0:66300c77c6e9	375	if (ac_cookie == NULL) {
tax	0:66300c77c6e9	376	ac_cookie = (u8_t*)pb->payload + off + sizeof(pt);
tax	0:66300c77c6e9	377	ac_cookie_len = len;
tax	0:66300c77c6e9	378	}
tax	0:66300c77c6e9	379	break;
tax	0:66300c77c6e9	380	case PPPOE_TAG_SNAME_ERR:
tax	0:66300c77c6e9	381	err_msg = "SERVICE NAME ERROR";
tax	0:66300c77c6e9	382	errortag = 1;
tax	0:66300c77c6e9	383	break;
tax	0:66300c77c6e9	384	case PPPOE_TAG_ACSYS_ERR:
tax	0:66300c77c6e9	385	err_msg = "AC SYSTEM ERROR";
tax	0:66300c77c6e9	386	errortag = 1;
tax	0:66300c77c6e9	387	break;
tax	0:66300c77c6e9	388	case PPPOE_TAG_GENERIC_ERR:
tax	0:66300c77c6e9	389	err_msg = "GENERIC ERROR";
tax	0:66300c77c6e9	390	errortag = 1;
tax	0:66300c77c6e9	391	break;
tax	0:66300c77c6e9	392	}
tax	0:66300c77c6e9	393	if (err_msg) {
tax	0:66300c77c6e9	394	if (errortag && len) {
tax	0:66300c77c6e9	395	u16_t error_len = LWIP_MIN(len, sizeof(pppoe_error_tmp)-1);
tax	0:66300c77c6e9	396	strncpy(pppoe_error_tmp, (char*)pb->payload + off + sizeof(pt), error_len);
tax	0:66300c77c6e9	397	pppoe_error_tmp[error_len-1] = '\0';
tax	0:66300c77c6e9	398	printf("%s: %s: %s\n", devname, err_msg, pppoe_error_tmp);
tax	0:66300c77c6e9	399	} else {
tax	0:66300c77c6e9	400	printf("%s: %s\n", devname, err_msg);
tax	0:66300c77c6e9	401	}
tax	0:66300c77c6e9	402	if (errortag) {
tax	0:66300c77c6e9	403	goto done;
tax	0:66300c77c6e9	404	}
tax	0:66300c77c6e9	405	}
tax	0:66300c77c6e9	406	off += sizeof(pt) + len;
tax	0:66300c77c6e9	407	}
tax	0:66300c77c6e9	408
tax	0:66300c77c6e9	409	breakbreak:;
tax	0:66300c77c6e9	410	switch (ph->code) {
tax	0:66300c77c6e9	411	case PPPOE_CODE_PADI:
tax	0:66300c77c6e9	412	#ifdef PPPOE_SERVER
tax	0:66300c77c6e9	413	/*
tax	0:66300c77c6e9	414	* got service name, concentrator name, and/or host unique.
tax	0:66300c77c6e9	415	* ignore if we have no interfaces with IFF_PASSIVE\|IFF_UP.
tax	0:66300c77c6e9	416	*/
tax	0:66300c77c6e9	417	if (LIST_EMPTY(&pppoe_softc_list)) {
tax	0:66300c77c6e9	418	goto done;
tax	0:66300c77c6e9	419	}
tax	0:66300c77c6e9	420	LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
tax	0:66300c77c6e9	421	if (!(sc->sc_sppp.pp_if.if_flags & IFF_UP)) {
tax	0:66300c77c6e9	422	continue;
tax	0:66300c77c6e9	423	}
tax	0:66300c77c6e9	424	if (!(sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
tax	0:66300c77c6e9	425	continue;
tax	0:66300c77c6e9	426	}
tax	0:66300c77c6e9	427	if (sc->sc_state == PPPOE_STATE_INITIAL) {
tax	0:66300c77c6e9	428	break;
tax	0:66300c77c6e9	429	}
tax	0:66300c77c6e9	430	}
tax	0:66300c77c6e9	431	if (sc == NULL) {
tax	0:66300c77c6e9	432	/* printf("pppoe: free passive interface is not found\n"); */
tax	0:66300c77c6e9	433	goto done;
tax	0:66300c77c6e9	434	}
tax	0:66300c77c6e9	435	if (hunique) {
tax	0:66300c77c6e9	436	if (sc->sc_hunique) {
tax	0:66300c77c6e9	437	mem_free(sc->sc_hunique);
tax	0:66300c77c6e9	438	}
tax	0:66300c77c6e9	439	sc->sc_hunique = mem_malloc(hunique_len);
tax	0:66300c77c6e9	440	if (sc->sc_hunique == NULL) {
tax	0:66300c77c6e9	441	goto done;
tax	0:66300c77c6e9	442	}
tax	0:66300c77c6e9	443	sc->sc_hunique_len = hunique_len;
tax	0:66300c77c6e9	444	MEMCPY(sc->sc_hunique, hunique, hunique_len);
tax	0:66300c77c6e9	445	}
tax	0:66300c77c6e9	446	MEMCPY(&sc->sc_dest, eh->ether_shost, sizeof sc->sc_dest);
tax	0:66300c77c6e9	447	sc->sc_state = PPPOE_STATE_PADO_SENT;
tax	0:66300c77c6e9	448	pppoe_send_pado(sc);
tax	0:66300c77c6e9	449	break;
tax	0:66300c77c6e9	450	#endif /* PPPOE_SERVER */
tax	0:66300c77c6e9	451	case PPPOE_CODE_PADR:
tax	0:66300c77c6e9	452	#ifdef PPPOE_SERVER
tax	0:66300c77c6e9	453	/*
tax	0:66300c77c6e9	454	* get sc from ac_cookie if IFF_PASSIVE
tax	0:66300c77c6e9	455	*/
tax	0:66300c77c6e9	456	if (ac_cookie == NULL) {
tax	0:66300c77c6e9	457	/* be quiet if there is not a single pppoe instance */
tax	0:66300c77c6e9	458	printf("pppoe: received PADR but not includes ac_cookie\n");
tax	0:66300c77c6e9	459	goto done;
tax	0:66300c77c6e9	460	}
tax	0:66300c77c6e9	461	sc = pppoe_find_softc_by_hunique(ac_cookie, ac_cookie_len, netif);
tax	0:66300c77c6e9	462	if (sc == NULL) {
tax	0:66300c77c6e9	463	/* be quiet if there is not a single pppoe instance */
tax	0:66300c77c6e9	464	if (!LIST_EMPTY(&pppoe_softc_list)) {
tax	0:66300c77c6e9	465	printf("pppoe: received PADR but could not find request for it\n");
tax	0:66300c77c6e9	466	}
tax	0:66300c77c6e9	467	goto done;
tax	0:66300c77c6e9	468	}
tax	0:66300c77c6e9	469	if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
tax	0:66300c77c6e9	470	printf("%c%c%"U16_F": received unexpected PADR\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
tax	0:66300c77c6e9	471	goto done;
tax	0:66300c77c6e9	472	}
tax	0:66300c77c6e9	473	if (hunique) {
tax	0:66300c77c6e9	474	if (sc->sc_hunique) {
tax	0:66300c77c6e9	475	mem_free(sc->sc_hunique);
tax	0:66300c77c6e9	476	}
tax	0:66300c77c6e9	477	sc->sc_hunique = mem_malloc(hunique_len);
tax	0:66300c77c6e9	478	if (sc->sc_hunique == NULL) {
tax	0:66300c77c6e9	479	goto done;
tax	0:66300c77c6e9	480	}
tax	0:66300c77c6e9	481	sc->sc_hunique_len = hunique_len;
tax	0:66300c77c6e9	482	MEMCPY(sc->sc_hunique, hunique, hunique_len);
tax	0:66300c77c6e9	483	}
tax	0:66300c77c6e9	484	pppoe_send_pads(sc);
tax	0:66300c77c6e9	485	sc->sc_state = PPPOE_STATE_SESSION;
tax	0:66300c77c6e9	486	pppoe_linkstatus_up(sc); /* notify upper layers */
tax	0:66300c77c6e9	487	break;
tax	0:66300c77c6e9	488	#else
tax	0:66300c77c6e9	489	/* ignore, we are no access concentrator */
tax	0:66300c77c6e9	490	goto done;
tax	0:66300c77c6e9	491	#endif /* PPPOE_SERVER */
tax	0:66300c77c6e9	492	case PPPOE_CODE_PADO:
tax	0:66300c77c6e9	493	if (sc == NULL) {
tax	0:66300c77c6e9	494	/* be quiet if there is not a single pppoe instance */
tax	0:66300c77c6e9	495	if (pppoe_softc_list != NULL) {
tax	0:66300c77c6e9	496	printf("pppoe: received PADO but could not find request for it\n");
tax	0:66300c77c6e9	497	}
tax	0:66300c77c6e9	498	goto done;
tax	0:66300c77c6e9	499	}
tax	0:66300c77c6e9	500	if (sc->sc_state != PPPOE_STATE_PADI_SENT) {
tax	0:66300c77c6e9	501	printf("%c%c%"U16_F": received unexpected PADO\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
tax	0:66300c77c6e9	502	goto done;
tax	0:66300c77c6e9	503	}
tax	0:66300c77c6e9	504	if (ac_cookie) {
tax	0:66300c77c6e9	505	sc->sc_ac_cookie_len = ac_cookie_len;
tax	0:66300c77c6e9	506	MEMCPY(sc->sc_ac_cookie, ac_cookie, ac_cookie_len);
tax	0:66300c77c6e9	507	}
tax	0:66300c77c6e9	508	MEMCPY(&sc->sc_dest, ethhdr->src.addr, sizeof(sc->sc_dest.addr));
tax	0:66300c77c6e9	509	sys_untimeout(pppoe_timeout, sc);
tax	0:66300c77c6e9	510	sc->sc_padr_retried = 0;
tax	0:66300c77c6e9	511	sc->sc_state = PPPOE_STATE_PADR_SENT;
tax	0:66300c77c6e9	512	if ((err = pppoe_send_padr(sc)) != 0) {
tax	0:66300c77c6e9	513	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));
tax	0:66300c77c6e9	514	}
tax	0:66300c77c6e9	515	sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
tax	0:66300c77c6e9	516	break;
tax	0:66300c77c6e9	517	case PPPOE_CODE_PADS:
tax	0:66300c77c6e9	518	if (sc == NULL) {
tax	0:66300c77c6e9	519	goto done;
tax	0:66300c77c6e9	520	}
tax	0:66300c77c6e9	521	sc->sc_session = session;
tax	0:66300c77c6e9	522	sys_untimeout(pppoe_timeout, sc);
tax	0:66300c77c6e9	523	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));
tax	0:66300c77c6e9	524	sc->sc_state = PPPOE_STATE_SESSION;
tax	0:66300c77c6e9	525	pppoe_linkstatus_up(sc); /* notify upper layers */
tax	0:66300c77c6e9	526	break;
tax	0:66300c77c6e9	527	case PPPOE_CODE_PADT:
tax	0:66300c77c6e9	528	if (sc == NULL) {
tax	0:66300c77c6e9	529	goto done;
tax	0:66300c77c6e9	530	}
tax	0:66300c77c6e9	531	pppoe_clear_softc(sc, "received PADT");
tax	0:66300c77c6e9	532	break;
tax	0:66300c77c6e9	533	default:
tax	0:66300c77c6e9	534	if(sc) {
tax	0:66300c77c6e9	535	printf("%c%c%"U16_F": unknown code (0x%"X16_F") session = 0x%"X16_F"\n",
tax	0:66300c77c6e9	536	sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
tax	0:66300c77c6e9	537	(u16_t)ph->code, session);
tax	0:66300c77c6e9	538	} else {
tax	0:66300c77c6e9	539	printf("pppoe: unknown code (0x%"X16_F") session = 0x%"X16_F"\n", (u16_t)ph->code, session);
tax	0:66300c77c6e9	540	}
tax	0:66300c77c6e9	541	break;
tax	0:66300c77c6e9	542	}
tax	0:66300c77c6e9	543
tax	0:66300c77c6e9	544	done:
tax	0:66300c77c6e9	545	pbuf_free(pb);
tax	0:66300c77c6e9	546	return;
tax	0:66300c77c6e9	547	}
tax	0:66300c77c6e9	548
tax	0:66300c77c6e9	549	void
tax	0:66300c77c6e9	550	pppoe_disc_input(struct netif netif, struct pbuf p)
tax	0:66300c77c6e9	551	{
tax	0:66300c77c6e9	552	/* avoid error messages if there is not a single pppoe instance */
tax	0:66300c77c6e9	553	if (pppoe_softc_list != NULL) {
tax	0:66300c77c6e9	554	pppoe_dispatch_disc_pkt(netif, p);
tax	0:66300c77c6e9	555	} else {
tax	0:66300c77c6e9	556	pbuf_free(p);
tax	0:66300c77c6e9	557	}
tax	0:66300c77c6e9	558	}
tax	0:66300c77c6e9	559
tax	0:66300c77c6e9	560	void
tax	0:66300c77c6e9	561	pppoe_data_input(struct netif netif, struct pbuf pb)
tax	0:66300c77c6e9	562	{
tax	0:66300c77c6e9	563	u16_t session, plen;
tax	0:66300c77c6e9	564	struct pppoe_softc *sc;
tax	0:66300c77c6e9	565	struct pppoehdr *ph;
tax	0:66300c77c6e9	566	#ifdef PPPOE_TERM_UNKNOWN_SESSIONS
tax	0:66300c77c6e9	567	u8_t shost[ETHER_ADDR_LEN];
tax	0:66300c77c6e9	568	#endif
tax	0:66300c77c6e9	569
tax	0:66300c77c6e9	570	#ifdef PPPOE_TERM_UNKNOWN_SESSIONS
tax	0:66300c77c6e9	571	MEMCPY(shost, ((struct eth_hdr *)pb->payload)->src.addr, sizeof(shost));
tax	0:66300c77c6e9	572	#endif
tax	0:66300c77c6e9	573	if (pbuf_header(pb, -(int)sizeof(struct eth_hdr)) != 0) {
tax	0:66300c77c6e9	574	/* bail out */
tax	0:66300c77c6e9	575	PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header failed\n"));
tax	0:66300c77c6e9	576	LINK_STATS_INC(link.lenerr);
tax	0:66300c77c6e9	577	goto drop;
tax	0:66300c77c6e9	578	}
tax	0:66300c77c6e9	579
tax	0:66300c77c6e9	580	pb = pppSingleBuf (pb);
tax	0:66300c77c6e9	581
tax	0:66300c77c6e9	582	if (pb->len <= PPPOE_HEADERLEN) {
tax	0:66300c77c6e9	583	printf("pppoe (data): dropping too short packet: %d bytes\n", pb->len);
tax	0:66300c77c6e9	584	goto drop;
tax	0:66300c77c6e9	585	}
tax	0:66300c77c6e9	586
tax	0:66300c77c6e9	587	if (pb->len < sizeof(*ph)) {
tax	0:66300c77c6e9	588	printf("pppoe_data_input: could not get PPPoE header\n");
tax	0:66300c77c6e9	589	goto drop;
tax	0:66300c77c6e9	590	}
tax	0:66300c77c6e9	591	ph = (struct pppoehdr *)pb->payload;
tax	0:66300c77c6e9	592
tax	0:66300c77c6e9	593	if (ph->vertype != PPPOE_VERTYPE) {
tax	0:66300c77c6e9	594	printf("pppoe (data): unknown version/type packet: 0x%x\n", ph->vertype);
tax	0:66300c77c6e9	595	goto drop;
tax	0:66300c77c6e9	596	}
tax	0:66300c77c6e9	597	if (ph->code != 0) {
tax	0:66300c77c6e9	598	goto drop;
tax	0:66300c77c6e9	599	}
tax	0:66300c77c6e9	600
tax	0:66300c77c6e9	601	session = ntohs(ph->session);
tax	0:66300c77c6e9	602	sc = pppoe_find_softc_by_session(session, netif);
tax	0:66300c77c6e9	603	if (sc == NULL) {
tax	0:66300c77c6e9	604	#ifdef PPPOE_TERM_UNKNOWN_SESSIONS
tax	0:66300c77c6e9	605	printf("pppoe: input for unknown session 0x%x, sending PADT\n", session);
tax	0:66300c77c6e9	606	pppoe_send_padt(netif, session, shost);
tax	0:66300c77c6e9	607	#endif
tax	0:66300c77c6e9	608	goto drop;
tax	0:66300c77c6e9	609	}
tax	0:66300c77c6e9	610
tax	0:66300c77c6e9	611	plen = ntohs(ph->plen);
tax	0:66300c77c6e9	612
tax	0:66300c77c6e9	613	if (pbuf_header(pb, -(int)(PPPOE_HEADERLEN)) != 0) {
tax	0:66300c77c6e9	614	/* bail out */
tax	0:66300c77c6e9	615	PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header PPPOE_HEADERLEN failed\n"));
tax	0:66300c77c6e9	616	LINK_STATS_INC(link.lenerr);
tax	0:66300c77c6e9	617	goto drop;
tax	0:66300c77c6e9	618	}
tax	0:66300c77c6e9	619
tax	0:66300c77c6e9	620	PPPDEBUG(LOG_DEBUG, ("pppoe_data_input: %c%c%"U16_F": pkthdr.len=%d, pppoe.len=%d\n",
tax	0:66300c77c6e9	621	sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
tax	0:66300c77c6e9	622	pb->len, plen));
tax	0:66300c77c6e9	623
tax	0:66300c77c6e9	624	if (pb->len < plen) {
tax	0:66300c77c6e9	625	goto drop;
tax	0:66300c77c6e9	626	}
tax	0:66300c77c6e9	627
tax	0:66300c77c6e9	628	pppInProcOverEthernet(sc->sc_pd, pb);
tax	0:66300c77c6e9	629
tax	0:66300c77c6e9	630	return;
tax	0:66300c77c6e9	631
tax	0:66300c77c6e9	632	drop:
tax	0:66300c77c6e9	633	pbuf_free(pb);
tax	0:66300c77c6e9	634	}
tax	0:66300c77c6e9	635
tax	0:66300c77c6e9	636	static err_t
tax	0:66300c77c6e9	637	pppoe_output(struct pppoe_softc sc, struct pbuf pb)
tax	0:66300c77c6e9	638	{
tax	0:66300c77c6e9	639	struct eth_hdr *ethhdr;
tax	0:66300c77c6e9	640	u16_t etype;
tax	0:66300c77c6e9	641	err_t res;
tax	0:66300c77c6e9	642
tax	0:66300c77c6e9	643	if (!sc->sc_ethif) {
tax	0:66300c77c6e9	644	pbuf_free(pb);
tax	0:66300c77c6e9	645	return ERR_IF;
tax	0:66300c77c6e9	646	}
tax	0:66300c77c6e9	647
tax	0:66300c77c6e9	648	ethhdr = (struct eth_hdr *)pb->payload;
tax	0:66300c77c6e9	649	etype = sc->sc_state == PPPOE_STATE_SESSION ? ETHTYPE_PPPOE : ETHTYPE_PPPOEDISC;
tax	0:66300c77c6e9	650	ethhdr->type = htons(etype);
tax	0:66300c77c6e9	651	MEMCPY(ethhdr->dest.addr, sc->sc_dest.addr, sizeof(ethhdr->dest.addr));
tax	0:66300c77c6e9	652	MEMCPY(ethhdr->src.addr, ((struct eth_addr *)sc->sc_ethif->hwaddr)->addr, sizeof(ethhdr->src.addr));
tax	0:66300c77c6e9	653
tax	0:66300c77c6e9	654	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",
tax	0:66300c77c6e9	655	sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, etype,
tax	0:66300c77c6e9	656	sc->sc_state, sc->sc_session,
tax	0:66300c77c6e9	657	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],
tax	0:66300c77c6e9	658	pb->tot_len));
tax	0:66300c77c6e9	659
tax	0:66300c77c6e9	660	res = sc->sc_ethif->linkoutput(sc->sc_ethif, pb);
tax	0:66300c77c6e9	661
tax	0:66300c77c6e9	662	pbuf_free(pb);
tax	0:66300c77c6e9	663
tax	0:66300c77c6e9	664	return res;
tax	0:66300c77c6e9	665	}
tax	0:66300c77c6e9	666
tax	0:66300c77c6e9	667	static err_t
tax	0:66300c77c6e9	668	pppoe_send_padi(struct pppoe_softc *sc)
tax	0:66300c77c6e9	669	{
tax	0:66300c77c6e9	670	struct pbuf *pb;
tax	0:66300c77c6e9	671	u8_t *p;
tax	0:66300c77c6e9	672	int len;
tax	0:66300c77c6e9	673	#ifdef PPPOE_TODO
tax	0:66300c77c6e9	674	int l1 = 0, l2 = 0; /* XXX: gcc */
tax	0:66300c77c6e9	675	#endif /* PPPOE_TODO */
tax	0:66300c77c6e9	676
tax	0:66300c77c6e9	677	if (sc->sc_state >PPPOE_STATE_PADI_SENT) {
tax	0:66300c77c6e9	678	PPPDEBUG(LOG_ERR, ("ERROR: pppoe_send_padi in state %d", sc->sc_state));
tax	0:66300c77c6e9	679	}
tax	0:66300c77c6e9	680
tax	0:66300c77c6e9	681	/* calculate length of frame (excluding ethernet header + pppoe header) */
tax	0:66300c77c6e9	682	len = 2 + 2 + 2 + 2 + sizeof sc; /* service name tag is required, host unique is send too */
tax	0:66300c77c6e9	683	#ifdef PPPOE_TODO
tax	0:66300c77c6e9	684	if (sc->sc_service_name != NULL) {
tax	0:66300c77c6e9	685	l1 = (int)strlen(sc->sc_service_name);
tax	0:66300c77c6e9	686	len += l1;
tax	0:66300c77c6e9	687	}
tax	0:66300c77c6e9	688	if (sc->sc_concentrator_name != NULL) {
tax	0:66300c77c6e9	689	l2 = (int)strlen(sc->sc_concentrator_name);
tax	0:66300c77c6e9	690	len += 2 + 2 + l2;
tax	0:66300c77c6e9	691	}
tax	0:66300c77c6e9	692	#endif /* PPPOE_TODO */
tax	0:66300c77c6e9	693	LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
tax	0:66300c77c6e9	694	sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
tax	0:66300c77c6e9	695
tax	0:66300c77c6e9	696	/* allocate a buffer */
tax	0:66300c77c6e9	697	pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
tax	0:66300c77c6e9	698	if (!pb) {
tax	0:66300c77c6e9	699	return ERR_MEM;
tax	0:66300c77c6e9	700	}
tax	0:66300c77c6e9	701	LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
tax	0:66300c77c6e9	702
tax	0:66300c77c6e9	703	p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
tax	0:66300c77c6e9	704	/* fill in pkt */
tax	0:66300c77c6e9	705	PPPOE_ADD_HEADER(p, PPPOE_CODE_PADI, 0, (u16_t)len);
tax	0:66300c77c6e9	706	PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
tax	0:66300c77c6e9	707	#ifdef PPPOE_TODO
tax	0:66300c77c6e9	708	if (sc->sc_service_name != NULL) {
tax	0:66300c77c6e9	709	PPPOE_ADD_16(p, l1);
tax	0:66300c77c6e9	710	MEMCPY(p, sc->sc_service_name, l1);
tax	0:66300c77c6e9	711	p += l1;
tax	0:66300c77c6e9	712	} else
tax	0:66300c77c6e9	713	#endif /* PPPOE_TODO */
tax	0:66300c77c6e9	714	{
tax	0:66300c77c6e9	715	PPPOE_ADD_16(p, 0);
tax	0:66300c77c6e9	716	}
tax	0:66300c77c6e9	717	#ifdef PPPOE_TODO
tax	0:66300c77c6e9	718	if (sc->sc_concentrator_name != NULL) {
tax	0:66300c77c6e9	719	PPPOE_ADD_16(p, PPPOE_TAG_ACNAME);
tax	0:66300c77c6e9	720	PPPOE_ADD_16(p, l2);
tax	0:66300c77c6e9	721	MEMCPY(p, sc->sc_concentrator_name, l2);
tax	0:66300c77c6e9	722	p += l2;
tax	0:66300c77c6e9	723	}
tax	0:66300c77c6e9	724	#endif /* PPPOE_TODO */
tax	0:66300c77c6e9	725	PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
tax	0:66300c77c6e9	726	PPPOE_ADD_16(p, sizeof(sc));
tax	0:66300c77c6e9	727	MEMCPY(p, &sc, sizeof sc);
tax	0:66300c77c6e9	728
tax	0:66300c77c6e9	729	/* send pkt */
tax	0:66300c77c6e9	730	return pppoe_output(sc, pb);
tax	0:66300c77c6e9	731	}
tax	0:66300c77c6e9	732
tax	0:66300c77c6e9	733	static void
tax	0:66300c77c6e9	734	pppoe_timeout(void *arg)
tax	0:66300c77c6e9	735	{
tax	0:66300c77c6e9	736	int retry_wait, err;
tax	0:66300c77c6e9	737	struct pppoe_softc sc = (struct pppoe_softc)arg;
tax	0:66300c77c6e9	738
tax	0:66300c77c6e9	739	PPPDEBUG(LOG_DEBUG, ("pppoe: %c%c%"U16_F": timeout\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num));
tax	0:66300c77c6e9	740
tax	0:66300c77c6e9	741	switch (sc->sc_state) {
tax	0:66300c77c6e9	742	case PPPOE_STATE_PADI_SENT:
tax	0:66300c77c6e9	743	/*
tax	0:66300c77c6e9	744	* We have two basic ways of retrying:
tax	0:66300c77c6e9	745	* - Quick retry mode: try a few times in short sequence
tax	0:66300c77c6e9	746	* - Slow retry mode: we already had a connection successfully
tax	0:66300c77c6e9	747	* established and will try infinitely (without user
tax	0:66300c77c6e9	748	* intervention)
tax	0:66300c77c6e9	749	* We only enter slow retry mode if IFF_LINK1 (aka autodial)
tax	0:66300c77c6e9	750	* is not set.
tax	0:66300c77c6e9	751	*/
tax	0:66300c77c6e9	752
tax	0:66300c77c6e9	753	/* initialize for quick retry mode */
tax	0:66300c77c6e9	754	retry_wait = PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried);
tax	0:66300c77c6e9	755
tax	0:66300c77c6e9	756	sc->sc_padi_retried++;
tax	0:66300c77c6e9	757	if (sc->sc_padi_retried >= PPPOE_DISC_MAXPADI) {
tax	0:66300c77c6e9	758	#if 0
tax	0:66300c77c6e9	759	if ((sc->sc_sppp.pp_if.if_flags & IFF_LINK1) == 0) {
tax	0:66300c77c6e9	760	/* slow retry mode */
tax	0:66300c77c6e9	761	retry_wait = PPPOE_SLOW_RETRY;
tax	0:66300c77c6e9	762	} else
tax	0:66300c77c6e9	763	#endif
tax	0:66300c77c6e9	764	{
tax	0:66300c77c6e9	765	pppoe_abort_connect(sc);
tax	0:66300c77c6e9	766	return;
tax	0:66300c77c6e9	767	}
tax	0:66300c77c6e9	768	}
tax	0:66300c77c6e9	769	if ((err = pppoe_send_padi(sc)) != 0) {
tax	0:66300c77c6e9	770	sc->sc_padi_retried--;
tax	0:66300c77c6e9	771	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));
tax	0:66300c77c6e9	772	}
tax	0:66300c77c6e9	773	sys_timeout(retry_wait, pppoe_timeout, sc);
tax	0:66300c77c6e9	774	break;
tax	0:66300c77c6e9	775
tax	0:66300c77c6e9	776	case PPPOE_STATE_PADR_SENT:
tax	0:66300c77c6e9	777	sc->sc_padr_retried++;
tax	0:66300c77c6e9	778	if (sc->sc_padr_retried >= PPPOE_DISC_MAXPADR) {
tax	0:66300c77c6e9	779	MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
tax	0:66300c77c6e9	780	sc->sc_state = PPPOE_STATE_PADI_SENT;
tax	0:66300c77c6e9	781	sc->sc_padr_retried = 0;
tax	0:66300c77c6e9	782	if ((err = pppoe_send_padi(sc)) != 0) {
tax	0:66300c77c6e9	783	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));
tax	0:66300c77c6e9	784	}
tax	0:66300c77c6e9	785	sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried), pppoe_timeout, sc);
tax	0:66300c77c6e9	786	return;
tax	0:66300c77c6e9	787	}
tax	0:66300c77c6e9	788	if ((err = pppoe_send_padr(sc)) != 0) {
tax	0:66300c77c6e9	789	sc->sc_padr_retried--;
tax	0:66300c77c6e9	790	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));
tax	0:66300c77c6e9	791	}
tax	0:66300c77c6e9	792	sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
tax	0:66300c77c6e9	793	break;
tax	0:66300c77c6e9	794	case PPPOE_STATE_CLOSING:
tax	0:66300c77c6e9	795	pppoe_do_disconnect(sc);
tax	0:66300c77c6e9	796	break;
tax	0:66300c77c6e9	797	default:
tax	0:66300c77c6e9	798	return; /* all done, work in peace */
tax	0:66300c77c6e9	799	}
tax	0:66300c77c6e9	800	}
tax	0:66300c77c6e9	801
tax	0:66300c77c6e9	802	/* Start a connection (i.e. initiate discovery phase) */
tax	0:66300c77c6e9	803	int
tax	0:66300c77c6e9	804	pppoe_connect(struct pppoe_softc *sc)
tax	0:66300c77c6e9	805	{
tax	0:66300c77c6e9	806	int err;
tax	0:66300c77c6e9	807
tax	0:66300c77c6e9	808	if (sc->sc_state != PPPOE_STATE_INITIAL) {
tax	0:66300c77c6e9	809	return EBUSY;
tax	0:66300c77c6e9	810	}
tax	0:66300c77c6e9	811
tax	0:66300c77c6e9	812	#ifdef PPPOE_SERVER
tax	0:66300c77c6e9	813	/* wait PADI if IFF_PASSIVE */
tax	0:66300c77c6e9	814	if ((sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
tax	0:66300c77c6e9	815	return 0;
tax	0:66300c77c6e9	816	}
tax	0:66300c77c6e9	817	#endif
tax	0:66300c77c6e9	818	/* save state, in case we fail to send PADI */
tax	0:66300c77c6e9	819	sc->sc_state = PPPOE_STATE_PADI_SENT;
tax	0:66300c77c6e9	820	sc->sc_padr_retried = 0;
tax	0:66300c77c6e9	821	err = pppoe_send_padi(sc);
tax	0:66300c77c6e9	822	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));
tax	0:66300c77c6e9	823	sys_timeout(PPPOE_DISC_TIMEOUT, pppoe_timeout, sc);
tax	0:66300c77c6e9	824	return err;
tax	0:66300c77c6e9	825	}
tax	0:66300c77c6e9	826
tax	0:66300c77c6e9	827	/* disconnect */
tax	0:66300c77c6e9	828	void
tax	0:66300c77c6e9	829	pppoe_disconnect(struct pppoe_softc *sc)
tax	0:66300c77c6e9	830	{
tax	0:66300c77c6e9	831	if (sc->sc_state < PPPOE_STATE_SESSION) {
tax	0:66300c77c6e9	832	return;
tax	0:66300c77c6e9	833	}
tax	0:66300c77c6e9	834	/*
tax	0:66300c77c6e9	835	* Do not call pppoe_disconnect here, the upper layer state
tax	0:66300c77c6e9	836	* machine gets confused by this. We must return from this
tax	0:66300c77c6e9	837	* function and defer disconnecting to the timeout handler.
tax	0:66300c77c6e9	838	*/
tax	0:66300c77c6e9	839	sc->sc_state = PPPOE_STATE_CLOSING;
tax	0:66300c77c6e9	840	sys_timeout(20, pppoe_timeout, sc);
tax	0:66300c77c6e9	841	}
tax	0:66300c77c6e9	842
tax	0:66300c77c6e9	843	static int
tax	0:66300c77c6e9	844	pppoe_do_disconnect(struct pppoe_softc *sc)
tax	0:66300c77c6e9	845	{
tax	0:66300c77c6e9	846	int err;
tax	0:66300c77c6e9	847
tax	0:66300c77c6e9	848	if (sc->sc_state < PPPOE_STATE_SESSION) {
tax	0:66300c77c6e9	849	err = EBUSY;
tax	0:66300c77c6e9	850	} else {
tax	0:66300c77c6e9	851	PPPDEBUG(LOG_DEBUG, ("pppoe: %c%c%"U16_F": disconnecting\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num));
tax	0:66300c77c6e9	852	err = pppoe_send_padt(sc->sc_ethif, sc->sc_session, (const u8_t *)&sc->sc_dest);
tax	0:66300c77c6e9	853	}
tax	0:66300c77c6e9	854
tax	0:66300c77c6e9	855	/* cleanup softc */
tax	0:66300c77c6e9	856	sc->sc_state = PPPOE_STATE_INITIAL;
tax	0:66300c77c6e9	857	MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
tax	0:66300c77c6e9	858	sc->sc_ac_cookie_len = 0;
tax	0:66300c77c6e9	859	#ifdef PPPOE_SERVER
tax	0:66300c77c6e9	860	if (sc->sc_hunique) {
tax	0:66300c77c6e9	861	mem_free(sc->sc_hunique);
tax	0:66300c77c6e9	862	sc->sc_hunique = NULL;
tax	0:66300c77c6e9	863	}
tax	0:66300c77c6e9	864	sc->sc_hunique_len = 0;
tax	0:66300c77c6e9	865	#endif
tax	0:66300c77c6e9	866	sc->sc_session = 0;
tax	0:66300c77c6e9	867
tax	0:66300c77c6e9	868	sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
tax	0:66300c77c6e9	869
tax	0:66300c77c6e9	870	return err;
tax	0:66300c77c6e9	871	}
tax	0:66300c77c6e9	872
tax	0:66300c77c6e9	873	/* Connection attempt aborted */
tax	0:66300c77c6e9	874	static void
tax	0:66300c77c6e9	875	pppoe_abort_connect(struct pppoe_softc *sc)
tax	0:66300c77c6e9	876	{
tax	0:66300c77c6e9	877	printf("%c%c%"U16_F": could not establish connection\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
tax	0:66300c77c6e9	878	sc->sc_state = PPPOE_STATE_CLOSING;
tax	0:66300c77c6e9	879
tax	0:66300c77c6e9	880	sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
tax	0:66300c77c6e9	881
tax	0:66300c77c6e9	882	/* clear connection state */
tax	0:66300c77c6e9	883	MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
tax	0:66300c77c6e9	884	sc->sc_state = PPPOE_STATE_INITIAL;
tax	0:66300c77c6e9	885	}
tax	0:66300c77c6e9	886
tax	0:66300c77c6e9	887	/* Send a PADR packet */
tax	0:66300c77c6e9	888	static err_t
tax	0:66300c77c6e9	889	pppoe_send_padr(struct pppoe_softc *sc)
tax	0:66300c77c6e9	890	{
tax	0:66300c77c6e9	891	struct pbuf *pb;
tax	0:66300c77c6e9	892	u8_t *p;
tax	0:66300c77c6e9	893	size_t len;
tax	0:66300c77c6e9	894	#ifdef PPPOE_TODO
tax	0:66300c77c6e9	895	size_t l1 = 0; /* XXX: gcc */
tax	0:66300c77c6e9	896	#endif /* PPPOE_TODO */
tax	0:66300c77c6e9	897
tax	0:66300c77c6e9	898	if (sc->sc_state != PPPOE_STATE_PADR_SENT) {
tax	0:66300c77c6e9	899	return ERR_CONN;
tax	0:66300c77c6e9	900	}
tax	0:66300c77c6e9	901
tax	0:66300c77c6e9	902	len = 2 + 2 + 2 + 2 + sizeof(sc); /* service name, host unique */
tax	0:66300c77c6e9	903	#ifdef PPPOE_TODO
tax	0:66300c77c6e9	904	if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
tax	0:66300c77c6e9	905	l1 = strlen(sc->sc_service_name);
tax	0:66300c77c6e9	906	len += l1;
tax	0:66300c77c6e9	907	}
tax	0:66300c77c6e9	908	#endif /* PPPOE_TODO */
tax	0:66300c77c6e9	909	if (sc->sc_ac_cookie_len > 0) {
tax	0:66300c77c6e9	910	len += 2 + 2 + sc->sc_ac_cookie_len; /* AC cookie */
tax	0:66300c77c6e9	911	}
tax	0:66300c77c6e9	912	LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
tax	0:66300c77c6e9	913	sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
tax	0:66300c77c6e9	914	pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
tax	0:66300c77c6e9	915	if (!pb) {
tax	0:66300c77c6e9	916	return ERR_MEM;
tax	0:66300c77c6e9	917	}
tax	0:66300c77c6e9	918	LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
tax	0:66300c77c6e9	919	p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
tax	0:66300c77c6e9	920	PPPOE_ADD_HEADER(p, PPPOE_CODE_PADR, 0, len);
tax	0:66300c77c6e9	921	PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
tax	0:66300c77c6e9	922	#ifdef PPPOE_TODO
tax	0:66300c77c6e9	923	if (sc->sc_service_name != NULL) {
tax	0:66300c77c6e9	924	PPPOE_ADD_16(p, l1);
tax	0:66300c77c6e9	925	MEMCPY(p, sc->sc_service_name, l1);
tax	0:66300c77c6e9	926	p += l1;
tax	0:66300c77c6e9	927	} else
tax	0:66300c77c6e9	928	#endif /* PPPOE_TODO */
tax	0:66300c77c6e9	929	{
tax	0:66300c77c6e9	930	PPPOE_ADD_16(p, 0);
tax	0:66300c77c6e9	931	}
tax	0:66300c77c6e9	932	if (sc->sc_ac_cookie_len > 0) {
tax	0:66300c77c6e9	933	PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
tax	0:66300c77c6e9	934	PPPOE_ADD_16(p, sc->sc_ac_cookie_len);
tax	0:66300c77c6e9	935	MEMCPY(p, sc->sc_ac_cookie, sc->sc_ac_cookie_len);
tax	0:66300c77c6e9	936	p += sc->sc_ac_cookie_len;
tax	0:66300c77c6e9	937	}
tax	0:66300c77c6e9	938	PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
tax	0:66300c77c6e9	939	PPPOE_ADD_16(p, sizeof(sc));
tax	0:66300c77c6e9	940	MEMCPY(p, &sc, sizeof sc);
tax	0:66300c77c6e9	941
tax	0:66300c77c6e9	942	return pppoe_output(sc, pb);
tax	0:66300c77c6e9	943	}
tax	0:66300c77c6e9	944
tax	0:66300c77c6e9	945	/* send a PADT packet */
tax	0:66300c77c6e9	946	static err_t
tax	0:66300c77c6e9	947	pppoe_send_padt(struct netif outgoing_if, u_int session, const u8_t dest)
tax	0:66300c77c6e9	948	{
tax	0:66300c77c6e9	949	struct pbuf *pb;
tax	0:66300c77c6e9	950	struct eth_hdr *ethhdr;
tax	0:66300c77c6e9	951	err_t res;
tax	0:66300c77c6e9	952	u8_t *p;
tax	0:66300c77c6e9	953
tax	0:66300c77c6e9	954	pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN, PBUF_RAM);
tax	0:66300c77c6e9	955	if (!pb) {
tax	0:66300c77c6e9	956	return ERR_MEM;
tax	0:66300c77c6e9	957	}
tax	0:66300c77c6e9	958	LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
tax	0:66300c77c6e9	959
tax	0:66300c77c6e9	960	ethhdr = (struct eth_hdr *)pb->payload;
tax	0:66300c77c6e9	961	ethhdr->type = PP_HTONS(ETHTYPE_PPPOEDISC);
tax	0:66300c77c6e9	962	MEMCPY(ethhdr->dest.addr, dest, sizeof(ethhdr->dest.addr));
tax	0:66300c77c6e9	963	MEMCPY(ethhdr->src.addr, ((struct eth_addr *)outgoing_if->hwaddr)->addr, sizeof(ethhdr->src.addr));
tax	0:66300c77c6e9	964
tax	0:66300c77c6e9	965	p = (u8_t*)(ethhdr + 1);
tax	0:66300c77c6e9	966	PPPOE_ADD_HEADER(p, PPPOE_CODE_PADT, session, 0);
tax	0:66300c77c6e9	967
tax	0:66300c77c6e9	968	res = outgoing_if->linkoutput(outgoing_if, pb);
tax	0:66300c77c6e9	969
tax	0:66300c77c6e9	970	pbuf_free(pb);
tax	0:66300c77c6e9	971
tax	0:66300c77c6e9	972	return res;
tax	0:66300c77c6e9	973	}
tax	0:66300c77c6e9	974
tax	0:66300c77c6e9	975	#ifdef PPPOE_SERVER
tax	0:66300c77c6e9	976	static err_t
tax	0:66300c77c6e9	977	pppoe_send_pado(struct pppoe_softc *sc)
tax	0:66300c77c6e9	978	{
tax	0:66300c77c6e9	979	struct pbuf *pb;
tax	0:66300c77c6e9	980	u8_t *p;
tax	0:66300c77c6e9	981	size_t len;
tax	0:66300c77c6e9	982
tax	0:66300c77c6e9	983	if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
tax	0:66300c77c6e9	984	return ERR_CONN;
tax	0:66300c77c6e9	985	}
tax	0:66300c77c6e9	986
tax	0:66300c77c6e9	987	/* calc length */
tax	0:66300c77c6e9	988	len = 0;
tax	0:66300c77c6e9	989	/* include ac_cookie */
tax	0:66300c77c6e9	990	len += 2 + 2 + sizeof(sc);
tax	0:66300c77c6e9	991	/* include hunique */
tax	0:66300c77c6e9	992	len += 2 + 2 + sc->sc_hunique_len;
tax	0:66300c77c6e9	993	pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
tax	0:66300c77c6e9	994	if (!pb) {
tax	0:66300c77c6e9	995	return ERR_MEM;
tax	0:66300c77c6e9	996	}
tax	0:66300c77c6e9	997	LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
tax	0:66300c77c6e9	998	p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
tax	0:66300c77c6e9	999	PPPOE_ADD_HEADER(p, PPPOE_CODE_PADO, 0, len);
tax	0:66300c77c6e9	1000	PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
tax	0:66300c77c6e9	1001	PPPOE_ADD_16(p, sizeof(sc));
tax	0:66300c77c6e9	1002	MEMCPY(p, &sc, sizeof(sc));
tax	0:66300c77c6e9	1003	p += sizeof(sc);
tax	0:66300c77c6e9	1004	PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
tax	0:66300c77c6e9	1005	PPPOE_ADD_16(p, sc->sc_hunique_len);
tax	0:66300c77c6e9	1006	MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
tax	0:66300c77c6e9	1007	return pppoe_output(sc, pb);
tax	0:66300c77c6e9	1008	}
tax	0:66300c77c6e9	1009
tax	0:66300c77c6e9	1010	static err_t
tax	0:66300c77c6e9	1011	pppoe_send_pads(struct pppoe_softc *sc)
tax	0:66300c77c6e9	1012	{
tax	0:66300c77c6e9	1013	struct pbuf *pb;
tax	0:66300c77c6e9	1014	u8_t *p;
tax	0:66300c77c6e9	1015	size_t len, l1 = 0; /* XXX: gcc */
tax	0:66300c77c6e9	1016
tax	0:66300c77c6e9	1017	if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
tax	0:66300c77c6e9	1018	return ERR_CONN;
tax	0:66300c77c6e9	1019	}
tax	0:66300c77c6e9	1020
tax	0:66300c77c6e9	1021	sc->sc_session = mono_time.tv_sec % 0xff + 1;
tax	0:66300c77c6e9	1022	/* calc length */
tax	0:66300c77c6e9	1023	len = 0;
tax	0:66300c77c6e9	1024	/* include hunique */
tax	0:66300c77c6e9	1025	len += 2 + 2 + 2 + 2 + sc->sc_hunique_len; /* service name, host unique*/
tax	0:66300c77c6e9	1026	if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
tax	0:66300c77c6e9	1027	l1 = strlen(sc->sc_service_name);
tax	0:66300c77c6e9	1028	len += l1;
tax	0:66300c77c6e9	1029	}
tax	0:66300c77c6e9	1030	pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
tax	0:66300c77c6e9	1031	if (!pb) {
tax	0:66300c77c6e9	1032	return ERR_MEM;
tax	0:66300c77c6e9	1033	}
tax	0:66300c77c6e9	1034	LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
tax	0:66300c77c6e9	1035	p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
tax	0:66300c77c6e9	1036	PPPOE_ADD_HEADER(p, PPPOE_CODE_PADS, sc->sc_session, len);
tax	0:66300c77c6e9	1037	PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
tax	0:66300c77c6e9	1038	if (sc->sc_service_name != NULL) {
tax	0:66300c77c6e9	1039	PPPOE_ADD_16(p, l1);
tax	0:66300c77c6e9	1040	MEMCPY(p, sc->sc_service_name, l1);
tax	0:66300c77c6e9	1041	p += l1;
tax	0:66300c77c6e9	1042	} else {
tax	0:66300c77c6e9	1043	PPPOE_ADD_16(p, 0);
tax	0:66300c77c6e9	1044	}
tax	0:66300c77c6e9	1045	PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
tax	0:66300c77c6e9	1046	PPPOE_ADD_16(p, sc->sc_hunique_len);
tax	0:66300c77c6e9	1047	MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
tax	0:66300c77c6e9	1048	return pppoe_output(sc, pb);
tax	0:66300c77c6e9	1049	}
tax	0:66300c77c6e9	1050	#endif
tax	0:66300c77c6e9	1051
tax	0:66300c77c6e9	1052	err_t
tax	0:66300c77c6e9	1053	pppoe_xmit(struct pppoe_softc sc, struct pbuf pb)
tax	0:66300c77c6e9	1054	{
tax	0:66300c77c6e9	1055	u8_t *p;
tax	0:66300c77c6e9	1056	size_t len;
tax	0:66300c77c6e9	1057
tax	0:66300c77c6e9	1058	/* are we ready to process data yet? */
tax	0:66300c77c6e9	1059	if (sc->sc_state < PPPOE_STATE_SESSION) {
tax	0:66300c77c6e9	1060	/sppp_flush(&sc->sc_sppp.pp_if);/
tax	0:66300c77c6e9	1061	pbuf_free(pb);
tax	0:66300c77c6e9	1062	return ERR_CONN;
tax	0:66300c77c6e9	1063	}
tax	0:66300c77c6e9	1064
tax	0:66300c77c6e9	1065	len = pb->tot_len;
tax	0:66300c77c6e9	1066
tax	0:66300c77c6e9	1067	/* make room for Ethernet header - should not fail */
tax	0:66300c77c6e9	1068	if (pbuf_header(pb, sizeof(struct eth_hdr) + PPPOE_HEADERLEN) != 0) {
tax	0:66300c77c6e9	1069	/* bail out */
tax	0:66300c77c6e9	1070	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));
tax	0:66300c77c6e9	1071	LINK_STATS_INC(link.lenerr);
tax	0:66300c77c6e9	1072	pbuf_free(pb);
tax	0:66300c77c6e9	1073	return ERR_BUF;
tax	0:66300c77c6e9	1074	}
tax	0:66300c77c6e9	1075
tax	0:66300c77c6e9	1076	p = (u8_t*)pb->payload + sizeof(struct eth_hdr);
tax	0:66300c77c6e9	1077	PPPOE_ADD_HEADER(p, 0, sc->sc_session, len);
tax	0:66300c77c6e9	1078
tax	0:66300c77c6e9	1079	return pppoe_output(sc, pb);
tax	0:66300c77c6e9	1080	}
tax	0:66300c77c6e9	1081
tax	0:66300c77c6e9	1082	#if 0 /def PFIL_HOOKS/
tax	0:66300c77c6e9	1083	static int
tax	0:66300c77c6e9	1084	pppoe_ifattach_hook(void arg, struct pbuf mp, struct netif ifp, int dir)
tax	0:66300c77c6e9	1085	{
tax	0:66300c77c6e9	1086	struct pppoe_softc *sc;
tax	0:66300c77c6e9	1087	int s;
tax	0:66300c77c6e9	1088
tax	0:66300c77c6e9	1089	if (mp != (struct pbuf **)PFIL_IFNET_DETACH) {
tax	0:66300c77c6e9	1090	return 0;
tax	0:66300c77c6e9	1091	}
tax	0:66300c77c6e9	1092
tax	0:66300c77c6e9	1093	LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
tax	0:66300c77c6e9	1094	if (sc->sc_ethif != ifp) {
tax	0:66300c77c6e9	1095	continue;
tax	0:66300c77c6e9	1096	}
tax	0:66300c77c6e9	1097	if (sc->sc_sppp.pp_if.if_flags & IFF_UP) {
tax	0:66300c77c6e9	1098	sc->sc_sppp.pp_if.if_flags &= ~(IFF_UP\|IFF_RUNNING);
tax	0:66300c77c6e9	1099	printf("%c%c%"U16_F": ethernet interface detached, going down\n",
tax	0:66300c77c6e9	1100	sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
tax	0:66300c77c6e9	1101	}
tax	0:66300c77c6e9	1102	sc->sc_ethif = NULL;
tax	0:66300c77c6e9	1103	pppoe_clear_softc(sc, "ethernet interface detached");
tax	0:66300c77c6e9	1104	}
tax	0:66300c77c6e9	1105
tax	0:66300c77c6e9	1106	return 0;
tax	0:66300c77c6e9	1107	}
tax	0:66300c77c6e9	1108	#endif
tax	0:66300c77c6e9	1109
tax	0:66300c77c6e9	1110	static void
tax	0:66300c77c6e9	1111	pppoe_clear_softc(struct pppoe_softc sc, const char message)
tax	0:66300c77c6e9	1112	{
tax	0:66300c77c6e9	1113	LWIP_UNUSED_ARG(message);
tax	0:66300c77c6e9	1114
tax	0:66300c77c6e9	1115	/* stop timer */
tax	0:66300c77c6e9	1116	sys_untimeout(pppoe_timeout, sc);
tax	0:66300c77c6e9	1117	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));
tax	0:66300c77c6e9	1118
tax	0:66300c77c6e9	1119	/* fix our state */
tax	0:66300c77c6e9	1120	sc->sc_state = PPPOE_STATE_INITIAL;
tax	0:66300c77c6e9	1121
tax	0:66300c77c6e9	1122	/* notify upper layers */
tax	0:66300c77c6e9	1123	sc->sc_linkStatusCB(sc->sc_pd, 0);
tax	0:66300c77c6e9	1124
tax	0:66300c77c6e9	1125	/* clean up softc */
tax	0:66300c77c6e9	1126	MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
tax	0:66300c77c6e9	1127	sc->sc_ac_cookie_len = 0;
tax	0:66300c77c6e9	1128	sc->sc_session = 0;
tax	0:66300c77c6e9	1129	}
tax	0:66300c77c6e9	1130
tax	0:66300c77c6e9	1131	#endif /* PPPOE_SUPPORT */
tax	0:66300c77c6e9	1132

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	29 Mar 2011
Imports:	16
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	2

lwip/netif/ppp/ppp_oe.c@0:66300c77c6e9, 2011-03-29 (annotated)

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