CK Sin / Mbed 2 deprecated Ethernetwebsocket

Ethernetwebsoc

Dependencies:   C12832_lcd LM75B WebSocketClient mbed-rtos mbed Socket lwip-eth lwip-sys lwip

EthernetInterface/lwip/netif/ppp/ppp_oe.c@0:0ed2a7c7190c, 2013-05-31 (annotated)

Committer:
GordonSin
Date:
Fri May 31 04:09:54 2013 +0000
Revision:
0:0ed2a7c7190c
31/5/2013;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
GordonSin 0:0ed2a7c7190c 1 /*****************************************************************************
GordonSin 0:0ed2a7c7190c 2 * ppp_oe.c - PPP Over Ethernet implementation for lwIP.
GordonSin 0:0ed2a7c7190c 3 *
GordonSin 0:0ed2a7c7190c 4 * Copyright (c) 2006 by Marc Boucher, Services Informatiques (MBSI) inc.
GordonSin 0:0ed2a7c7190c 5 *
GordonSin 0:0ed2a7c7190c 6 * The authors hereby grant permission to use, copy, modify, distribute,
GordonSin 0:0ed2a7c7190c 7 * and license this software and its documentation for any purpose, provided
GordonSin 0:0ed2a7c7190c 8 * that existing copyright notices are retained in all copies and that this
GordonSin 0:0ed2a7c7190c 9 * notice and the following disclaimer are included verbatim in any
GordonSin 0:0ed2a7c7190c 10 * distributions. No written agreement, license, or royalty fee is required
GordonSin 0:0ed2a7c7190c 11 * for any of the authorized uses.
GordonSin 0:0ed2a7c7190c 12 *
GordonSin 0:0ed2a7c7190c 13 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
GordonSin 0:0ed2a7c7190c 14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
GordonSin 0:0ed2a7c7190c 15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
GordonSin 0:0ed2a7c7190c 16 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
GordonSin 0:0ed2a7c7190c 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
GordonSin 0:0ed2a7c7190c 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
GordonSin 0:0ed2a7c7190c 19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
GordonSin 0:0ed2a7c7190c 20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
GordonSin 0:0ed2a7c7190c 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
GordonSin 0:0ed2a7c7190c 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
GordonSin 0:0ed2a7c7190c 23 *
GordonSin 0:0ed2a7c7190c 24 ******************************************************************************
GordonSin 0:0ed2a7c7190c 25 * REVISION HISTORY
GordonSin 0:0ed2a7c7190c 26 *
GordonSin 0:0ed2a7c7190c 27 * 06-01-01 Marc Boucher <marc@mbsi.ca>
GordonSin 0:0ed2a7c7190c 28 * Ported to lwIP.
GordonSin 0:0ed2a7c7190c 29 *****************************************************************************/
GordonSin 0:0ed2a7c7190c 30
GordonSin 0:0ed2a7c7190c 31
GordonSin 0:0ed2a7c7190c 32
GordonSin 0:0ed2a7c7190c 33 /* based on NetBSD: if_pppoe.c,v 1.64 2006/01/31 23:50:15 martin Exp */
GordonSin 0:0ed2a7c7190c 34
GordonSin 0:0ed2a7c7190c 35 /*-
GordonSin 0:0ed2a7c7190c 36 * Copyright (c) 2002 The NetBSD Foundation, Inc.
GordonSin 0:0ed2a7c7190c 37 * All rights reserved.
GordonSin 0:0ed2a7c7190c 38 *
GordonSin 0:0ed2a7c7190c 39 * This code is derived from software contributed to The NetBSD Foundation
GordonSin 0:0ed2a7c7190c 40 * by Martin Husemann <martin@NetBSD.org>.
GordonSin 0:0ed2a7c7190c 41 *
GordonSin 0:0ed2a7c7190c 42 * Redistribution and use in source and binary forms, with or without
GordonSin 0:0ed2a7c7190c 43 * modification, are permitted provided that the following conditions
GordonSin 0:0ed2a7c7190c 44 * are met:
GordonSin 0:0ed2a7c7190c 45 * 1. Redistributions of source code must retain the above copyright
GordonSin 0:0ed2a7c7190c 46 * notice, this list of conditions and the following disclaimer.
GordonSin 0:0ed2a7c7190c 47 * 2. Redistributions in binary form must reproduce the above copyright
GordonSin 0:0ed2a7c7190c 48 * notice, this list of conditions and the following disclaimer in the
GordonSin 0:0ed2a7c7190c 49 * documentation and/or other materials provided with the distribution.
GordonSin 0:0ed2a7c7190c 50 * 3. All advertising materials mentioning features or use of this software
GordonSin 0:0ed2a7c7190c 51 * must display the following acknowledgement:
GordonSin 0:0ed2a7c7190c 52 * This product includes software developed by the NetBSD
GordonSin 0:0ed2a7c7190c 53 * Foundation, Inc. and its contributors.
GordonSin 0:0ed2a7c7190c 54 * 4. Neither the name of The NetBSD Foundation nor the names of its
GordonSin 0:0ed2a7c7190c 55 * contributors may be used to endorse or promote products derived
GordonSin 0:0ed2a7c7190c 56 * from this software without specific prior written permission.
GordonSin 0:0ed2a7c7190c 57 *
GordonSin 0:0ed2a7c7190c 58 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
GordonSin 0:0ed2a7c7190c 59 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
GordonSin 0:0ed2a7c7190c 60 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
GordonSin 0:0ed2a7c7190c 61 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
GordonSin 0:0ed2a7c7190c 62 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
GordonSin 0:0ed2a7c7190c 63 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
GordonSin 0:0ed2a7c7190c 64 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
GordonSin 0:0ed2a7c7190c 65 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
GordonSin 0:0ed2a7c7190c 66 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
GordonSin 0:0ed2a7c7190c 67 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
GordonSin 0:0ed2a7c7190c 68 * POSSIBILITY OF SUCH DAMAGE.
GordonSin 0:0ed2a7c7190c 69 */
GordonSin 0:0ed2a7c7190c 70
GordonSin 0:0ed2a7c7190c 71 #include "lwip/opt.h"
GordonSin 0:0ed2a7c7190c 72
GordonSin 0:0ed2a7c7190c 73 #if PPPOE_SUPPORT /* don't build if not configured for use in lwipopts.h */
GordonSin 0:0ed2a7c7190c 74
GordonSin 0:0ed2a7c7190c 75 #include "netif/ppp_oe.h"
GordonSin 0:0ed2a7c7190c 76
GordonSin 0:0ed2a7c7190c 77 #include "ppp.h"
GordonSin 0:0ed2a7c7190c 78 #include "pppdebug.h"
GordonSin 0:0ed2a7c7190c 79
GordonSin 0:0ed2a7c7190c 80 #include "lwip/timers.h"
GordonSin 0:0ed2a7c7190c 81 #include "lwip/memp.h"
GordonSin 0:0ed2a7c7190c 82
GordonSin 0:0ed2a7c7190c 83 #include <string.h>
GordonSin 0:0ed2a7c7190c 84 #include <stdio.h>
GordonSin 0:0ed2a7c7190c 85
GordonSin 0:0ed2a7c7190c 86
GordonSin 0:0ed2a7c7190c 87 /* Add a 16 bit unsigned value to a buffer pointed to by PTR */
GordonSin 0:0ed2a7c7190c 88 #define PPPOE_ADD_16(PTR, VAL) \
GordonSin 0:0ed2a7c7190c 89 *(PTR)++ = (u8_t)((VAL) / 256); \
GordonSin 0:0ed2a7c7190c 90 *(PTR)++ = (u8_t)((VAL) % 256)
GordonSin 0:0ed2a7c7190c 91
GordonSin 0:0ed2a7c7190c 92 /* Add a complete PPPoE header to the buffer pointed to by PTR */
GordonSin 0:0ed2a7c7190c 93 #define PPPOE_ADD_HEADER(PTR, CODE, SESS, LEN) \
GordonSin 0:0ed2a7c7190c 94 *(PTR)++ = PPPOE_VERTYPE; \
GordonSin 0:0ed2a7c7190c 95 *(PTR)++ = (CODE); \
GordonSin 0:0ed2a7c7190c 96 PPPOE_ADD_16(PTR, SESS); \
GordonSin 0:0ed2a7c7190c 97 PPPOE_ADD_16(PTR, LEN)
GordonSin 0:0ed2a7c7190c 98
GordonSin 0:0ed2a7c7190c 99 #define PPPOE_DISC_TIMEOUT (5*1000) /* base for quick timeout calculation */
GordonSin 0:0ed2a7c7190c 100 #define PPPOE_SLOW_RETRY (60*1000) /* persistent retry interval */
GordonSin 0:0ed2a7c7190c 101 #define PPPOE_DISC_MAXPADI 4 /* retry PADI four times (quickly) */
GordonSin 0:0ed2a7c7190c 102 #define PPPOE_DISC_MAXPADR 2 /* retry PADR twice */
GordonSin 0:0ed2a7c7190c 103
GordonSin 0:0ed2a7c7190c 104 #ifdef PPPOE_SERVER
GordonSin 0:0ed2a7c7190c 105 #error "PPPOE_SERVER is not yet supported under lwIP!"
GordonSin 0:0ed2a7c7190c 106 /* from if_spppsubr.c */
GordonSin 0:0ed2a7c7190c 107 #define IFF_PASSIVE IFF_LINK0 /* wait passively for connection */
GordonSin 0:0ed2a7c7190c 108 #endif
GordonSin 0:0ed2a7c7190c 109
GordonSin 0:0ed2a7c7190c 110 #ifndef PPPOE_ERRORSTRING_LEN
GordonSin 0:0ed2a7c7190c 111 #define PPPOE_ERRORSTRING_LEN 64
GordonSin 0:0ed2a7c7190c 112 #endif
GordonSin 0:0ed2a7c7190c 113 static char pppoe_error_tmp[PPPOE_ERRORSTRING_LEN];
GordonSin 0:0ed2a7c7190c 114
GordonSin 0:0ed2a7c7190c 115
GordonSin 0:0ed2a7c7190c 116 /* input routines */
GordonSin 0:0ed2a7c7190c 117 static void pppoe_dispatch_disc_pkt(struct netif *, struct pbuf *);
GordonSin 0:0ed2a7c7190c 118
GordonSin 0:0ed2a7c7190c 119 /* management routines */
GordonSin 0:0ed2a7c7190c 120 static int pppoe_do_disconnect(struct pppoe_softc *);
GordonSin 0:0ed2a7c7190c 121 static void pppoe_abort_connect(struct pppoe_softc *);
GordonSin 0:0ed2a7c7190c 122 static void pppoe_clear_softc(struct pppoe_softc *, const char *);
GordonSin 0:0ed2a7c7190c 123
GordonSin 0:0ed2a7c7190c 124 /* internal timeout handling */
GordonSin 0:0ed2a7c7190c 125 static void pppoe_timeout(void *);
GordonSin 0:0ed2a7c7190c 126
GordonSin 0:0ed2a7c7190c 127 /* sending actual protocol controll packets */
GordonSin 0:0ed2a7c7190c 128 static err_t pppoe_send_padi(struct pppoe_softc *);
GordonSin 0:0ed2a7c7190c 129 static err_t pppoe_send_padr(struct pppoe_softc *);
GordonSin 0:0ed2a7c7190c 130 #ifdef PPPOE_SERVER
GordonSin 0:0ed2a7c7190c 131 static err_t pppoe_send_pado(struct pppoe_softc *);
GordonSin 0:0ed2a7c7190c 132 static err_t pppoe_send_pads(struct pppoe_softc *);
GordonSin 0:0ed2a7c7190c 133 #endif
GordonSin 0:0ed2a7c7190c 134 static err_t pppoe_send_padt(struct netif *, u_int, const u8_t *);
GordonSin 0:0ed2a7c7190c 135
GordonSin 0:0ed2a7c7190c 136 /* internal helper functions */
GordonSin 0:0ed2a7c7190c 137 static struct pppoe_softc * pppoe_find_softc_by_session(u_int, struct netif *);
GordonSin 0:0ed2a7c7190c 138 static struct pppoe_softc * pppoe_find_softc_by_hunique(u8_t *, size_t, struct netif *);
GordonSin 0:0ed2a7c7190c 139
GordonSin 0:0ed2a7c7190c 140 /** linked list of created pppoe interfaces */
GordonSin 0:0ed2a7c7190c 141 static struct pppoe_softc *pppoe_softc_list;
GordonSin 0:0ed2a7c7190c 142
GordonSin 0:0ed2a7c7190c 143 err_t
GordonSin 0:0ed2a7c7190c 144 pppoe_create(struct netif *ethif, int pd, void (*linkStatusCB)(int pd, int up), struct pppoe_softc **scptr)
GordonSin 0:0ed2a7c7190c 145 {
GordonSin 0:0ed2a7c7190c 146 struct pppoe_softc *sc;
GordonSin 0:0ed2a7c7190c 147
GordonSin 0:0ed2a7c7190c 148 sc = (struct pppoe_softc *)memp_malloc(MEMP_PPPOE_IF);
GordonSin 0:0ed2a7c7190c 149 if (sc == NULL) {
GordonSin 0:0ed2a7c7190c 150 *scptr = NULL;
GordonSin 0:0ed2a7c7190c 151 return ERR_MEM;
GordonSin 0:0ed2a7c7190c 152 }
GordonSin 0:0ed2a7c7190c 153 memset(sc, 0, sizeof(struct pppoe_softc));
GordonSin 0:0ed2a7c7190c 154
GordonSin 0:0ed2a7c7190c 155 /* changed to real address later */
GordonSin 0:0ed2a7c7190c 156 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
GordonSin 0:0ed2a7c7190c 157
GordonSin 0:0ed2a7c7190c 158 sc->sc_pd = pd;
GordonSin 0:0ed2a7c7190c 159 sc->sc_linkStatusCB = linkStatusCB;
GordonSin 0:0ed2a7c7190c 160 sc->sc_ethif = ethif;
GordonSin 0:0ed2a7c7190c 161
GordonSin 0:0ed2a7c7190c 162 /* put the new interface at the head of the list */
GordonSin 0:0ed2a7c7190c 163 sc->next = pppoe_softc_list;
GordonSin 0:0ed2a7c7190c 164 pppoe_softc_list = sc;
GordonSin 0:0ed2a7c7190c 165
GordonSin 0:0ed2a7c7190c 166 *scptr = sc;
GordonSin 0:0ed2a7c7190c 167
GordonSin 0:0ed2a7c7190c 168 return ERR_OK;
GordonSin 0:0ed2a7c7190c 169 }
GordonSin 0:0ed2a7c7190c 170
GordonSin 0:0ed2a7c7190c 171 err_t
GordonSin 0:0ed2a7c7190c 172 pppoe_destroy(struct netif *ifp)
GordonSin 0:0ed2a7c7190c 173 {
GordonSin 0:0ed2a7c7190c 174 struct pppoe_softc *sc, *prev = NULL;
GordonSin 0:0ed2a7c7190c 175
GordonSin 0:0ed2a7c7190c 176 for (sc = pppoe_softc_list; sc != NULL; prev = sc, sc = sc->next) {
GordonSin 0:0ed2a7c7190c 177 if (sc->sc_ethif == ifp) {
GordonSin 0:0ed2a7c7190c 178 break;
GordonSin 0:0ed2a7c7190c 179 }
GordonSin 0:0ed2a7c7190c 180 }
GordonSin 0:0ed2a7c7190c 181
GordonSin 0:0ed2a7c7190c 182 if(!(sc && (sc->sc_ethif == ifp))) {
GordonSin 0:0ed2a7c7190c 183 return ERR_IF;
GordonSin 0:0ed2a7c7190c 184 }
GordonSin 0:0ed2a7c7190c 185
GordonSin 0:0ed2a7c7190c 186 sys_untimeout(pppoe_timeout, sc);
GordonSin 0:0ed2a7c7190c 187 if (prev == NULL) {
GordonSin 0:0ed2a7c7190c 188 /* remove sc from the head of the list */
GordonSin 0:0ed2a7c7190c 189 pppoe_softc_list = sc->next;
GordonSin 0:0ed2a7c7190c 190 } else {
GordonSin 0:0ed2a7c7190c 191 /* remove sc from the list */
GordonSin 0:0ed2a7c7190c 192 prev->next = sc->next;
GordonSin 0:0ed2a7c7190c 193 }
GordonSin 0:0ed2a7c7190c 194
GordonSin 0:0ed2a7c7190c 195 #ifdef PPPOE_TODO
GordonSin 0:0ed2a7c7190c 196 if (sc->sc_concentrator_name) {
GordonSin 0:0ed2a7c7190c 197 mem_free(sc->sc_concentrator_name);
GordonSin 0:0ed2a7c7190c 198 }
GordonSin 0:0ed2a7c7190c 199 if (sc->sc_service_name) {
GordonSin 0:0ed2a7c7190c 200 mem_free(sc->sc_service_name);
GordonSin 0:0ed2a7c7190c 201 }
GordonSin 0:0ed2a7c7190c 202 #endif /* PPPOE_TODO */
GordonSin 0:0ed2a7c7190c 203 memp_free(MEMP_PPPOE_IF, sc);
GordonSin 0:0ed2a7c7190c 204
GordonSin 0:0ed2a7c7190c 205 return ERR_OK;
GordonSin 0:0ed2a7c7190c 206 }
GordonSin 0:0ed2a7c7190c 207
GordonSin 0:0ed2a7c7190c 208 /*
GordonSin 0:0ed2a7c7190c 209 * Find the interface handling the specified session.
GordonSin 0:0ed2a7c7190c 210 * Note: O(number of sessions open), this is a client-side only, mean
GordonSin 0:0ed2a7c7190c 211 * and lean implementation, so number of open sessions typically should
GordonSin 0:0ed2a7c7190c 212 * be 1.
GordonSin 0:0ed2a7c7190c 213 */
GordonSin 0:0ed2a7c7190c 214 static struct pppoe_softc *
GordonSin 0:0ed2a7c7190c 215 pppoe_find_softc_by_session(u_int session, struct netif *rcvif)
GordonSin 0:0ed2a7c7190c 216 {
GordonSin 0:0ed2a7c7190c 217 struct pppoe_softc *sc;
GordonSin 0:0ed2a7c7190c 218
GordonSin 0:0ed2a7c7190c 219 if (session == 0) {
GordonSin 0:0ed2a7c7190c 220 return NULL;
GordonSin 0:0ed2a7c7190c 221 }
GordonSin 0:0ed2a7c7190c 222
GordonSin 0:0ed2a7c7190c 223 for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
GordonSin 0:0ed2a7c7190c 224 if (sc->sc_state == PPPOE_STATE_SESSION
GordonSin 0:0ed2a7c7190c 225 && sc->sc_session == session) {
GordonSin 0:0ed2a7c7190c 226 if (sc->sc_ethif == rcvif) {
GordonSin 0:0ed2a7c7190c 227 return sc;
GordonSin 0:0ed2a7c7190c 228 } else {
GordonSin 0:0ed2a7c7190c 229 return NULL;
GordonSin 0:0ed2a7c7190c 230 }
GordonSin 0:0ed2a7c7190c 231 }
GordonSin 0:0ed2a7c7190c 232 }
GordonSin 0:0ed2a7c7190c 233 return NULL;
GordonSin 0:0ed2a7c7190c 234 }
GordonSin 0:0ed2a7c7190c 235
GordonSin 0:0ed2a7c7190c 236 /* Check host unique token passed and return appropriate softc pointer,
GordonSin 0:0ed2a7c7190c 237 * or NULL if token is bogus. */
GordonSin 0:0ed2a7c7190c 238 static struct pppoe_softc *
GordonSin 0:0ed2a7c7190c 239 pppoe_find_softc_by_hunique(u8_t *token, size_t len, struct netif *rcvif)
GordonSin 0:0ed2a7c7190c 240 {
GordonSin 0:0ed2a7c7190c 241 struct pppoe_softc *sc, *t;
GordonSin 0:0ed2a7c7190c 242
GordonSin 0:0ed2a7c7190c 243 if (pppoe_softc_list == NULL) {
GordonSin 0:0ed2a7c7190c 244 return NULL;
GordonSin 0:0ed2a7c7190c 245 }
GordonSin 0:0ed2a7c7190c 246
GordonSin 0:0ed2a7c7190c 247 if (len != sizeof sc) {
GordonSin 0:0ed2a7c7190c 248 return NULL;
GordonSin 0:0ed2a7c7190c 249 }
GordonSin 0:0ed2a7c7190c 250 MEMCPY(&t, token, len);
GordonSin 0:0ed2a7c7190c 251
GordonSin 0:0ed2a7c7190c 252 for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
GordonSin 0:0ed2a7c7190c 253 if (sc == t) {
GordonSin 0:0ed2a7c7190c 254 break;
GordonSin 0:0ed2a7c7190c 255 }
GordonSin 0:0ed2a7c7190c 256 }
GordonSin 0:0ed2a7c7190c 257
GordonSin 0:0ed2a7c7190c 258 if (sc == NULL) {
GordonSin 0:0ed2a7c7190c 259 PPPDEBUG(LOG_DEBUG, ("pppoe: alien host unique tag, no session found\n"));
GordonSin 0:0ed2a7c7190c 260 return NULL;
GordonSin 0:0ed2a7c7190c 261 }
GordonSin 0:0ed2a7c7190c 262
GordonSin 0:0ed2a7c7190c 263 /* should be safe to access *sc now */
GordonSin 0:0ed2a7c7190c 264 if (sc->sc_state < PPPOE_STATE_PADI_SENT || sc->sc_state >= PPPOE_STATE_SESSION) {
GordonSin 0:0ed2a7c7190c 265 printf("%c%c%"U16_F": host unique tag found, but it belongs to a connection in state %d\n",
GordonSin 0:0ed2a7c7190c 266 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, sc->sc_state);
GordonSin 0:0ed2a7c7190c 267 return NULL;
GordonSin 0:0ed2a7c7190c 268 }
GordonSin 0:0ed2a7c7190c 269 if (sc->sc_ethif != rcvif) {
GordonSin 0:0ed2a7c7190c 270 printf("%c%c%"U16_F": wrong interface, not accepting host unique\n",
GordonSin 0:0ed2a7c7190c 271 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
GordonSin 0:0ed2a7c7190c 272 return NULL;
GordonSin 0:0ed2a7c7190c 273 }
GordonSin 0:0ed2a7c7190c 274 return sc;
GordonSin 0:0ed2a7c7190c 275 }
GordonSin 0:0ed2a7c7190c 276
GordonSin 0:0ed2a7c7190c 277 static void
GordonSin 0:0ed2a7c7190c 278 pppoe_linkstatus_up(struct pppoe_softc *sc)
GordonSin 0:0ed2a7c7190c 279 {
GordonSin 0:0ed2a7c7190c 280 sc->sc_linkStatusCB(sc->sc_pd, 1);
GordonSin 0:0ed2a7c7190c 281 }
GordonSin 0:0ed2a7c7190c 282
GordonSin 0:0ed2a7c7190c 283 /* analyze and handle a single received packet while not in session state */
GordonSin 0:0ed2a7c7190c 284 static void
GordonSin 0:0ed2a7c7190c 285 pppoe_dispatch_disc_pkt(struct netif *netif, struct pbuf *pb)
GordonSin 0:0ed2a7c7190c 286 {
GordonSin 0:0ed2a7c7190c 287 u16_t tag, len;
GordonSin 0:0ed2a7c7190c 288 u16_t session, plen;
GordonSin 0:0ed2a7c7190c 289 struct pppoe_softc *sc;
GordonSin 0:0ed2a7c7190c 290 const char *err_msg;
GordonSin 0:0ed2a7c7190c 291 char devname[6];
GordonSin 0:0ed2a7c7190c 292 u8_t *ac_cookie;
GordonSin 0:0ed2a7c7190c 293 u16_t ac_cookie_len;
GordonSin 0:0ed2a7c7190c 294 #ifdef PPPOE_SERVER
GordonSin 0:0ed2a7c7190c 295 u8_t *hunique;
GordonSin 0:0ed2a7c7190c 296 size_t hunique_len;
GordonSin 0:0ed2a7c7190c 297 #endif
GordonSin 0:0ed2a7c7190c 298 struct pppoehdr *ph;
GordonSin 0:0ed2a7c7190c 299 struct pppoetag pt;
GordonSin 0:0ed2a7c7190c 300 int off, err, errortag;
GordonSin 0:0ed2a7c7190c 301 struct eth_hdr *ethhdr;
GordonSin 0:0ed2a7c7190c 302
GordonSin 0:0ed2a7c7190c 303 pb = pppSingleBuf(pb);
GordonSin 0:0ed2a7c7190c 304
GordonSin 0:0ed2a7c7190c 305 strcpy(devname, "pppoe"); /* as long as we don't know which instance */
GordonSin 0:0ed2a7c7190c 306 err_msg = NULL;
GordonSin 0:0ed2a7c7190c 307 errortag = 0;
GordonSin 0:0ed2a7c7190c 308 if (pb->len < sizeof(*ethhdr)) {
GordonSin 0:0ed2a7c7190c 309 goto done;
GordonSin 0:0ed2a7c7190c 310 }
GordonSin 0:0ed2a7c7190c 311 ethhdr = (struct eth_hdr *)pb->payload;
GordonSin 0:0ed2a7c7190c 312 off = sizeof(*ethhdr);
GordonSin 0:0ed2a7c7190c 313
GordonSin 0:0ed2a7c7190c 314 ac_cookie = NULL;
GordonSin 0:0ed2a7c7190c 315 ac_cookie_len = 0;
GordonSin 0:0ed2a7c7190c 316 #ifdef PPPOE_SERVER
GordonSin 0:0ed2a7c7190c 317 hunique = NULL;
GordonSin 0:0ed2a7c7190c 318 hunique_len = 0;
GordonSin 0:0ed2a7c7190c 319 #endif
GordonSin 0:0ed2a7c7190c 320 session = 0;
GordonSin 0:0ed2a7c7190c 321 if (pb->len - off < PPPOE_HEADERLEN) {
GordonSin 0:0ed2a7c7190c 322 printf("pppoe: packet too short: %d\n", pb->len);
GordonSin 0:0ed2a7c7190c 323 goto done;
GordonSin 0:0ed2a7c7190c 324 }
GordonSin 0:0ed2a7c7190c 325
GordonSin 0:0ed2a7c7190c 326 ph = (struct pppoehdr *) (ethhdr + 1);
GordonSin 0:0ed2a7c7190c 327 if (ph->vertype != PPPOE_VERTYPE) {
GordonSin 0:0ed2a7c7190c 328 printf("pppoe: unknown version/type packet: 0x%x\n", ph->vertype);
GordonSin 0:0ed2a7c7190c 329 goto done;
GordonSin 0:0ed2a7c7190c 330 }
GordonSin 0:0ed2a7c7190c 331 session = ntohs(ph->session);
GordonSin 0:0ed2a7c7190c 332 plen = ntohs(ph->plen);
GordonSin 0:0ed2a7c7190c 333 off += sizeof(*ph);
GordonSin 0:0ed2a7c7190c 334
GordonSin 0:0ed2a7c7190c 335 if (plen + off > pb->len) {
GordonSin 0:0ed2a7c7190c 336 printf("pppoe: packet content does not fit: data available = %d, packet size = %u\n",
GordonSin 0:0ed2a7c7190c 337 pb->len - off, plen);
GordonSin 0:0ed2a7c7190c 338 goto done;
GordonSin 0:0ed2a7c7190c 339 }
GordonSin 0:0ed2a7c7190c 340 if(pb->tot_len == pb->len) {
GordonSin 0:0ed2a7c7190c 341 pb->tot_len = pb->len = (u16_t)off + plen; /* ignore trailing garbage */
GordonSin 0:0ed2a7c7190c 342 }
GordonSin 0:0ed2a7c7190c 343 tag = 0;
GordonSin 0:0ed2a7c7190c 344 len = 0;
GordonSin 0:0ed2a7c7190c 345 sc = NULL;
GordonSin 0:0ed2a7c7190c 346 while (off + sizeof(pt) <= pb->len) {
GordonSin 0:0ed2a7c7190c 347 MEMCPY(&pt, (u8_t*)pb->payload + off, sizeof(pt));
GordonSin 0:0ed2a7c7190c 348 tag = ntohs(pt.tag);
GordonSin 0:0ed2a7c7190c 349 len = ntohs(pt.len);
GordonSin 0:0ed2a7c7190c 350 if (off + sizeof(pt) + len > pb->len) {
GordonSin 0:0ed2a7c7190c 351 printf("pppoe: tag 0x%x len 0x%x is too long\n", tag, len);
GordonSin 0:0ed2a7c7190c 352 goto done;
GordonSin 0:0ed2a7c7190c 353 }
GordonSin 0:0ed2a7c7190c 354 switch (tag) {
GordonSin 0:0ed2a7c7190c 355 case PPPOE_TAG_EOL:
GordonSin 0:0ed2a7c7190c 356 goto breakbreak;
GordonSin 0:0ed2a7c7190c 357 case PPPOE_TAG_SNAME:
GordonSin 0:0ed2a7c7190c 358 break; /* ignored */
GordonSin 0:0ed2a7c7190c 359 case PPPOE_TAG_ACNAME:
GordonSin 0:0ed2a7c7190c 360 break; /* ignored */
GordonSin 0:0ed2a7c7190c 361 case PPPOE_TAG_HUNIQUE:
GordonSin 0:0ed2a7c7190c 362 if (sc != NULL) {
GordonSin 0:0ed2a7c7190c 363 break;
GordonSin 0:0ed2a7c7190c 364 }
GordonSin 0:0ed2a7c7190c 365 #ifdef PPPOE_SERVER
GordonSin 0:0ed2a7c7190c 366 hunique = (u8_t*)pb->payload + off + sizeof(pt);
GordonSin 0:0ed2a7c7190c 367 hunique_len = len;
GordonSin 0:0ed2a7c7190c 368 #endif
GordonSin 0:0ed2a7c7190c 369 sc = pppoe_find_softc_by_hunique((u8_t*)pb->payload + off + sizeof(pt), len, netif);
GordonSin 0:0ed2a7c7190c 370 if (sc != NULL) {
GordonSin 0:0ed2a7c7190c 371 snprintf(devname, sizeof(devname), "%c%c%"U16_F, sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
GordonSin 0:0ed2a7c7190c 372 }
GordonSin 0:0ed2a7c7190c 373 break;
GordonSin 0:0ed2a7c7190c 374 case PPPOE_TAG_ACCOOKIE:
GordonSin 0:0ed2a7c7190c 375 if (ac_cookie == NULL) {
GordonSin 0:0ed2a7c7190c 376 ac_cookie = (u8_t*)pb->payload + off + sizeof(pt);
GordonSin 0:0ed2a7c7190c 377 ac_cookie_len = len;
GordonSin 0:0ed2a7c7190c 378 }
GordonSin 0:0ed2a7c7190c 379 break;
GordonSin 0:0ed2a7c7190c 380 case PPPOE_TAG_SNAME_ERR:
GordonSin 0:0ed2a7c7190c 381 err_msg = "SERVICE NAME ERROR";
GordonSin 0:0ed2a7c7190c 382 errortag = 1;
GordonSin 0:0ed2a7c7190c 383 break;
GordonSin 0:0ed2a7c7190c 384 case PPPOE_TAG_ACSYS_ERR:
GordonSin 0:0ed2a7c7190c 385 err_msg = "AC SYSTEM ERROR";
GordonSin 0:0ed2a7c7190c 386 errortag = 1;
GordonSin 0:0ed2a7c7190c 387 break;
GordonSin 0:0ed2a7c7190c 388 case PPPOE_TAG_GENERIC_ERR:
GordonSin 0:0ed2a7c7190c 389 err_msg = "GENERIC ERROR";
GordonSin 0:0ed2a7c7190c 390 errortag = 1;
GordonSin 0:0ed2a7c7190c 391 break;
GordonSin 0:0ed2a7c7190c 392 }
GordonSin 0:0ed2a7c7190c 393 if (err_msg) {
GordonSin 0:0ed2a7c7190c 394 if (errortag && len) {
GordonSin 0:0ed2a7c7190c 395 u16_t error_len = LWIP_MIN(len, sizeof(pppoe_error_tmp)-1);
GordonSin 0:0ed2a7c7190c 396 strncpy(pppoe_error_tmp, (char*)pb->payload + off + sizeof(pt), error_len);
GordonSin 0:0ed2a7c7190c 397 pppoe_error_tmp[error_len-1] = '\0';
GordonSin 0:0ed2a7c7190c 398 printf("%s: %s: %s\n", devname, err_msg, pppoe_error_tmp);
GordonSin 0:0ed2a7c7190c 399 } else {
GordonSin 0:0ed2a7c7190c 400 printf("%s: %s\n", devname, err_msg);
GordonSin 0:0ed2a7c7190c 401 }
GordonSin 0:0ed2a7c7190c 402 if (errortag) {
GordonSin 0:0ed2a7c7190c 403 goto done;
GordonSin 0:0ed2a7c7190c 404 }
GordonSin 0:0ed2a7c7190c 405 }
GordonSin 0:0ed2a7c7190c 406 off += sizeof(pt) + len;
GordonSin 0:0ed2a7c7190c 407 }
GordonSin 0:0ed2a7c7190c 408
GordonSin 0:0ed2a7c7190c 409 breakbreak:;
GordonSin 0:0ed2a7c7190c 410 switch (ph->code) {
GordonSin 0:0ed2a7c7190c 411 case PPPOE_CODE_PADI:
GordonSin 0:0ed2a7c7190c 412 #ifdef PPPOE_SERVER
GordonSin 0:0ed2a7c7190c 413 /*
GordonSin 0:0ed2a7c7190c 414 * got service name, concentrator name, and/or host unique.
GordonSin 0:0ed2a7c7190c 415 * ignore if we have no interfaces with IFF_PASSIVE|IFF_UP.
GordonSin 0:0ed2a7c7190c 416 */
GordonSin 0:0ed2a7c7190c 417 if (LIST_EMPTY(&pppoe_softc_list)) {
GordonSin 0:0ed2a7c7190c 418 goto done;
GordonSin 0:0ed2a7c7190c 419 }
GordonSin 0:0ed2a7c7190c 420 LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
GordonSin 0:0ed2a7c7190c 421 if (!(sc->sc_sppp.pp_if.if_flags & IFF_UP)) {
GordonSin 0:0ed2a7c7190c 422 continue;
GordonSin 0:0ed2a7c7190c 423 }
GordonSin 0:0ed2a7c7190c 424 if (!(sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
GordonSin 0:0ed2a7c7190c 425 continue;
GordonSin 0:0ed2a7c7190c 426 }
GordonSin 0:0ed2a7c7190c 427 if (sc->sc_state == PPPOE_STATE_INITIAL) {
GordonSin 0:0ed2a7c7190c 428 break;
GordonSin 0:0ed2a7c7190c 429 }
GordonSin 0:0ed2a7c7190c 430 }
GordonSin 0:0ed2a7c7190c 431 if (sc == NULL) {
GordonSin 0:0ed2a7c7190c 432 /* printf("pppoe: free passive interface is not found\n"); */
GordonSin 0:0ed2a7c7190c 433 goto done;
GordonSin 0:0ed2a7c7190c 434 }
GordonSin 0:0ed2a7c7190c 435 if (hunique) {
GordonSin 0:0ed2a7c7190c 436 if (sc->sc_hunique) {
GordonSin 0:0ed2a7c7190c 437 mem_free(sc->sc_hunique);
GordonSin 0:0ed2a7c7190c 438 }
GordonSin 0:0ed2a7c7190c 439 sc->sc_hunique = mem_malloc(hunique_len);
GordonSin 0:0ed2a7c7190c 440 if (sc->sc_hunique == NULL) {
GordonSin 0:0ed2a7c7190c 441 goto done;
GordonSin 0:0ed2a7c7190c 442 }
GordonSin 0:0ed2a7c7190c 443 sc->sc_hunique_len = hunique_len;
GordonSin 0:0ed2a7c7190c 444 MEMCPY(sc->sc_hunique, hunique, hunique_len);
GordonSin 0:0ed2a7c7190c 445 }
GordonSin 0:0ed2a7c7190c 446 MEMCPY(&sc->sc_dest, eh->ether_shost, sizeof sc->sc_dest);
GordonSin 0:0ed2a7c7190c 447 sc->sc_state = PPPOE_STATE_PADO_SENT;
GordonSin 0:0ed2a7c7190c 448 pppoe_send_pado(sc);
GordonSin 0:0ed2a7c7190c 449 break;
GordonSin 0:0ed2a7c7190c 450 #endif /* PPPOE_SERVER */
GordonSin 0:0ed2a7c7190c 451 case PPPOE_CODE_PADR:
GordonSin 0:0ed2a7c7190c 452 #ifdef PPPOE_SERVER
GordonSin 0:0ed2a7c7190c 453 /*
GordonSin 0:0ed2a7c7190c 454 * get sc from ac_cookie if IFF_PASSIVE
GordonSin 0:0ed2a7c7190c 455 */
GordonSin 0:0ed2a7c7190c 456 if (ac_cookie == NULL) {
GordonSin 0:0ed2a7c7190c 457 /* be quiet if there is not a single pppoe instance */
GordonSin 0:0ed2a7c7190c 458 printf("pppoe: received PADR but not includes ac_cookie\n");
GordonSin 0:0ed2a7c7190c 459 goto done;
GordonSin 0:0ed2a7c7190c 460 }
GordonSin 0:0ed2a7c7190c 461 sc = pppoe_find_softc_by_hunique(ac_cookie, ac_cookie_len, netif);
GordonSin 0:0ed2a7c7190c 462 if (sc == NULL) {
GordonSin 0:0ed2a7c7190c 463 /* be quiet if there is not a single pppoe instance */
GordonSin 0:0ed2a7c7190c 464 if (!LIST_EMPTY(&pppoe_softc_list)) {
GordonSin 0:0ed2a7c7190c 465 printf("pppoe: received PADR but could not find request for it\n");
GordonSin 0:0ed2a7c7190c 466 }
GordonSin 0:0ed2a7c7190c 467 goto done;
GordonSin 0:0ed2a7c7190c 468 }
GordonSin 0:0ed2a7c7190c 469 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
GordonSin 0:0ed2a7c7190c 470 printf("%c%c%"U16_F": received unexpected PADR\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
GordonSin 0:0ed2a7c7190c 471 goto done;
GordonSin 0:0ed2a7c7190c 472 }
GordonSin 0:0ed2a7c7190c 473 if (hunique) {
GordonSin 0:0ed2a7c7190c 474 if (sc->sc_hunique) {
GordonSin 0:0ed2a7c7190c 475 mem_free(sc->sc_hunique);
GordonSin 0:0ed2a7c7190c 476 }
GordonSin 0:0ed2a7c7190c 477 sc->sc_hunique = mem_malloc(hunique_len);
GordonSin 0:0ed2a7c7190c 478 if (sc->sc_hunique == NULL) {
GordonSin 0:0ed2a7c7190c 479 goto done;
GordonSin 0:0ed2a7c7190c 480 }
GordonSin 0:0ed2a7c7190c 481 sc->sc_hunique_len = hunique_len;
GordonSin 0:0ed2a7c7190c 482 MEMCPY(sc->sc_hunique, hunique, hunique_len);
GordonSin 0:0ed2a7c7190c 483 }
GordonSin 0:0ed2a7c7190c 484 pppoe_send_pads(sc);
GordonSin 0:0ed2a7c7190c 485 sc->sc_state = PPPOE_STATE_SESSION;
GordonSin 0:0ed2a7c7190c 486 pppoe_linkstatus_up(sc); /* notify upper layers */
GordonSin 0:0ed2a7c7190c 487 break;
GordonSin 0:0ed2a7c7190c 488 #else
GordonSin 0:0ed2a7c7190c 489 /* ignore, we are no access concentrator */
GordonSin 0:0ed2a7c7190c 490 goto done;
GordonSin 0:0ed2a7c7190c 491 #endif /* PPPOE_SERVER */
GordonSin 0:0ed2a7c7190c 492 case PPPOE_CODE_PADO:
GordonSin 0:0ed2a7c7190c 493 if (sc == NULL) {
GordonSin 0:0ed2a7c7190c 494 /* be quiet if there is not a single pppoe instance */
GordonSin 0:0ed2a7c7190c 495 if (pppoe_softc_list != NULL) {
GordonSin 0:0ed2a7c7190c 496 printf("pppoe: received PADO but could not find request for it\n");
GordonSin 0:0ed2a7c7190c 497 }
GordonSin 0:0ed2a7c7190c 498 goto done;
GordonSin 0:0ed2a7c7190c 499 }
GordonSin 0:0ed2a7c7190c 500 if (sc->sc_state != PPPOE_STATE_PADI_SENT) {
GordonSin 0:0ed2a7c7190c 501 printf("%c%c%"U16_F": received unexpected PADO\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
GordonSin 0:0ed2a7c7190c 502 goto done;
GordonSin 0:0ed2a7c7190c 503 }
GordonSin 0:0ed2a7c7190c 504 if (ac_cookie) {
GordonSin 0:0ed2a7c7190c 505 sc->sc_ac_cookie_len = ac_cookie_len;
GordonSin 0:0ed2a7c7190c 506 MEMCPY(sc->sc_ac_cookie, ac_cookie, ac_cookie_len);
GordonSin 0:0ed2a7c7190c 507 }
GordonSin 0:0ed2a7c7190c 508 MEMCPY(&sc->sc_dest, ethhdr->src.addr, sizeof(sc->sc_dest.addr));
GordonSin 0:0ed2a7c7190c 509 sys_untimeout(pppoe_timeout, sc);
GordonSin 0:0ed2a7c7190c 510 sc->sc_padr_retried = 0;
GordonSin 0:0ed2a7c7190c 511 sc->sc_state = PPPOE_STATE_PADR_SENT;
GordonSin 0:0ed2a7c7190c 512 if ((err = pppoe_send_padr(sc)) != 0) {
GordonSin 0:0ed2a7c7190c 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));
GordonSin 0:0ed2a7c7190c 514 }
GordonSin 0:0ed2a7c7190c 515 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
GordonSin 0:0ed2a7c7190c 516 break;
GordonSin 0:0ed2a7c7190c 517 case PPPOE_CODE_PADS:
GordonSin 0:0ed2a7c7190c 518 if (sc == NULL) {
GordonSin 0:0ed2a7c7190c 519 goto done;
GordonSin 0:0ed2a7c7190c 520 }
GordonSin 0:0ed2a7c7190c 521 sc->sc_session = session;
GordonSin 0:0ed2a7c7190c 522 sys_untimeout(pppoe_timeout, sc);
GordonSin 0:0ed2a7c7190c 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));
GordonSin 0:0ed2a7c7190c 524 sc->sc_state = PPPOE_STATE_SESSION;
GordonSin 0:0ed2a7c7190c 525 pppoe_linkstatus_up(sc); /* notify upper layers */
GordonSin 0:0ed2a7c7190c 526 break;
GordonSin 0:0ed2a7c7190c 527 case PPPOE_CODE_PADT:
GordonSin 0:0ed2a7c7190c 528 if (sc == NULL) {
GordonSin 0:0ed2a7c7190c 529 goto done;
GordonSin 0:0ed2a7c7190c 530 }
GordonSin 0:0ed2a7c7190c 531 pppoe_clear_softc(sc, "received PADT");
GordonSin 0:0ed2a7c7190c 532 break;
GordonSin 0:0ed2a7c7190c 533 default:
GordonSin 0:0ed2a7c7190c 534 if(sc) {
GordonSin 0:0ed2a7c7190c 535 printf("%c%c%"U16_F": unknown code (0x%"X16_F") session = 0x%"X16_F"\n",
GordonSin 0:0ed2a7c7190c 536 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
GordonSin 0:0ed2a7c7190c 537 (u16_t)ph->code, session);
GordonSin 0:0ed2a7c7190c 538 } else {
GordonSin 0:0ed2a7c7190c 539 printf("pppoe: unknown code (0x%"X16_F") session = 0x%"X16_F"\n", (u16_t)ph->code, session);
GordonSin 0:0ed2a7c7190c 540 }
GordonSin 0:0ed2a7c7190c 541 break;
GordonSin 0:0ed2a7c7190c 542 }
GordonSin 0:0ed2a7c7190c 543
GordonSin 0:0ed2a7c7190c 544 done:
GordonSin 0:0ed2a7c7190c 545 pbuf_free(pb);
GordonSin 0:0ed2a7c7190c 546 return;
GordonSin 0:0ed2a7c7190c 547 }
GordonSin 0:0ed2a7c7190c 548
GordonSin 0:0ed2a7c7190c 549 void
GordonSin 0:0ed2a7c7190c 550 pppoe_disc_input(struct netif *netif, struct pbuf *p)
GordonSin 0:0ed2a7c7190c 551 {
GordonSin 0:0ed2a7c7190c 552 /* avoid error messages if there is not a single pppoe instance */
GordonSin 0:0ed2a7c7190c 553 if (pppoe_softc_list != NULL) {
GordonSin 0:0ed2a7c7190c 554 pppoe_dispatch_disc_pkt(netif, p);
GordonSin 0:0ed2a7c7190c 555 } else {
GordonSin 0:0ed2a7c7190c 556 pbuf_free(p);
GordonSin 0:0ed2a7c7190c 557 }
GordonSin 0:0ed2a7c7190c 558 }
GordonSin 0:0ed2a7c7190c 559
GordonSin 0:0ed2a7c7190c 560 void
GordonSin 0:0ed2a7c7190c 561 pppoe_data_input(struct netif *netif, struct pbuf *pb)
GordonSin 0:0ed2a7c7190c 562 {
GordonSin 0:0ed2a7c7190c 563 u16_t session, plen;
GordonSin 0:0ed2a7c7190c 564 struct pppoe_softc *sc;
GordonSin 0:0ed2a7c7190c 565 struct pppoehdr *ph;
GordonSin 0:0ed2a7c7190c 566 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
GordonSin 0:0ed2a7c7190c 567 u8_t shost[ETHER_ADDR_LEN];
GordonSin 0:0ed2a7c7190c 568 #endif
GordonSin 0:0ed2a7c7190c 569
GordonSin 0:0ed2a7c7190c 570 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
GordonSin 0:0ed2a7c7190c 571 MEMCPY(shost, ((struct eth_hdr *)pb->payload)->src.addr, sizeof(shost));
GordonSin 0:0ed2a7c7190c 572 #endif
GordonSin 0:0ed2a7c7190c 573 if (pbuf_header(pb, -(int)sizeof(struct eth_hdr)) != 0) {
GordonSin 0:0ed2a7c7190c 574 /* bail out */
GordonSin 0:0ed2a7c7190c 575 PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header failed\n"));
GordonSin 0:0ed2a7c7190c 576 LINK_STATS_INC(link.lenerr);
GordonSin 0:0ed2a7c7190c 577 goto drop;
GordonSin 0:0ed2a7c7190c 578 }
GordonSin 0:0ed2a7c7190c 579
GordonSin 0:0ed2a7c7190c 580 pb = pppSingleBuf (pb);
GordonSin 0:0ed2a7c7190c 581
GordonSin 0:0ed2a7c7190c 582 if (pb->len <= PPPOE_HEADERLEN) {
GordonSin 0:0ed2a7c7190c 583 printf("pppoe (data): dropping too short packet: %d bytes\n", pb->len);
GordonSin 0:0ed2a7c7190c 584 goto drop;
GordonSin 0:0ed2a7c7190c 585 }
GordonSin 0:0ed2a7c7190c 586
GordonSin 0:0ed2a7c7190c 587 if (pb->len < sizeof(*ph)) {
GordonSin 0:0ed2a7c7190c 588 printf("pppoe_data_input: could not get PPPoE header\n");
GordonSin 0:0ed2a7c7190c 589 goto drop;
GordonSin 0:0ed2a7c7190c 590 }
GordonSin 0:0ed2a7c7190c 591 ph = (struct pppoehdr *)pb->payload;
GordonSin 0:0ed2a7c7190c 592
GordonSin 0:0ed2a7c7190c 593 if (ph->vertype != PPPOE_VERTYPE) {
GordonSin 0:0ed2a7c7190c 594 printf("pppoe (data): unknown version/type packet: 0x%x\n", ph->vertype);
GordonSin 0:0ed2a7c7190c 595 goto drop;
GordonSin 0:0ed2a7c7190c 596 }
GordonSin 0:0ed2a7c7190c 597 if (ph->code != 0) {
GordonSin 0:0ed2a7c7190c 598 goto drop;
GordonSin 0:0ed2a7c7190c 599 }
GordonSin 0:0ed2a7c7190c 600
GordonSin 0:0ed2a7c7190c 601 session = ntohs(ph->session);
GordonSin 0:0ed2a7c7190c 602 sc = pppoe_find_softc_by_session(session, netif);
GordonSin 0:0ed2a7c7190c 603 if (sc == NULL) {
GordonSin 0:0ed2a7c7190c 604 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
GordonSin 0:0ed2a7c7190c 605 printf("pppoe: input for unknown session 0x%x, sending PADT\n", session);
GordonSin 0:0ed2a7c7190c 606 pppoe_send_padt(netif, session, shost);
GordonSin 0:0ed2a7c7190c 607 #endif
GordonSin 0:0ed2a7c7190c 608 goto drop;
GordonSin 0:0ed2a7c7190c 609 }
GordonSin 0:0ed2a7c7190c 610
GordonSin 0:0ed2a7c7190c 611 plen = ntohs(ph->plen);
GordonSin 0:0ed2a7c7190c 612
GordonSin 0:0ed2a7c7190c 613 if (pbuf_header(pb, -(int)(PPPOE_HEADERLEN)) != 0) {
GordonSin 0:0ed2a7c7190c 614 /* bail out */
GordonSin 0:0ed2a7c7190c 615 PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header PPPOE_HEADERLEN failed\n"));
GordonSin 0:0ed2a7c7190c 616 LINK_STATS_INC(link.lenerr);
GordonSin 0:0ed2a7c7190c 617 goto drop;
GordonSin 0:0ed2a7c7190c 618 }
GordonSin 0:0ed2a7c7190c 619
GordonSin 0:0ed2a7c7190c 620 PPPDEBUG(LOG_DEBUG, ("pppoe_data_input: %c%c%"U16_F": pkthdr.len=%d, pppoe.len=%d\n",
GordonSin 0:0ed2a7c7190c 621 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
GordonSin 0:0ed2a7c7190c 622 pb->len, plen));
GordonSin 0:0ed2a7c7190c 623
GordonSin 0:0ed2a7c7190c 624 if (pb->len < plen) {
GordonSin 0:0ed2a7c7190c 625 goto drop;
GordonSin 0:0ed2a7c7190c 626 }
GordonSin 0:0ed2a7c7190c 627
GordonSin 0:0ed2a7c7190c 628 pppInProcOverEthernet(sc->sc_pd, pb);
GordonSin 0:0ed2a7c7190c 629
GordonSin 0:0ed2a7c7190c 630 return;
GordonSin 0:0ed2a7c7190c 631
GordonSin 0:0ed2a7c7190c 632 drop:
GordonSin 0:0ed2a7c7190c 633 pbuf_free(pb);
GordonSin 0:0ed2a7c7190c 634 }
GordonSin 0:0ed2a7c7190c 635
GordonSin 0:0ed2a7c7190c 636 static err_t
GordonSin 0:0ed2a7c7190c 637 pppoe_output(struct pppoe_softc *sc, struct pbuf *pb)
GordonSin 0:0ed2a7c7190c 638 {
GordonSin 0:0ed2a7c7190c 639 struct eth_hdr *ethhdr;
GordonSin 0:0ed2a7c7190c 640 u16_t etype;
GordonSin 0:0ed2a7c7190c 641 err_t res;
GordonSin 0:0ed2a7c7190c 642
GordonSin 0:0ed2a7c7190c 643 if (!sc->sc_ethif) {
GordonSin 0:0ed2a7c7190c 644 pbuf_free(pb);
GordonSin 0:0ed2a7c7190c 645 return ERR_IF;
GordonSin 0:0ed2a7c7190c 646 }
GordonSin 0:0ed2a7c7190c 647
GordonSin 0:0ed2a7c7190c 648 ethhdr = (struct eth_hdr *)pb->payload;
GordonSin 0:0ed2a7c7190c 649 etype = sc->sc_state == PPPOE_STATE_SESSION ? ETHTYPE_PPPOE : ETHTYPE_PPPOEDISC;
GordonSin 0:0ed2a7c7190c 650 ethhdr->type = htons(etype);
GordonSin 0:0ed2a7c7190c 651 MEMCPY(ethhdr->dest.addr, sc->sc_dest.addr, sizeof(ethhdr->dest.addr));
GordonSin 0:0ed2a7c7190c 652 MEMCPY(ethhdr->src.addr, ((struct eth_addr *)sc->sc_ethif->hwaddr)->addr, sizeof(ethhdr->src.addr));
GordonSin 0:0ed2a7c7190c 653
GordonSin 0:0ed2a7c7190c 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",
GordonSin 0:0ed2a7c7190c 655 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, etype,
GordonSin 0:0ed2a7c7190c 656 sc->sc_state, sc->sc_session,
GordonSin 0:0ed2a7c7190c 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],
GordonSin 0:0ed2a7c7190c 658 pb->tot_len));
GordonSin 0:0ed2a7c7190c 659
GordonSin 0:0ed2a7c7190c 660 res = sc->sc_ethif->linkoutput(sc->sc_ethif, pb);
GordonSin 0:0ed2a7c7190c 661
GordonSin 0:0ed2a7c7190c 662 pbuf_free(pb);
GordonSin 0:0ed2a7c7190c 663
GordonSin 0:0ed2a7c7190c 664 return res;
GordonSin 0:0ed2a7c7190c 665 }
GordonSin 0:0ed2a7c7190c 666
GordonSin 0:0ed2a7c7190c 667 static err_t
GordonSin 0:0ed2a7c7190c 668 pppoe_send_padi(struct pppoe_softc *sc)
GordonSin 0:0ed2a7c7190c 669 {
GordonSin 0:0ed2a7c7190c 670 struct pbuf *pb;
GordonSin 0:0ed2a7c7190c 671 u8_t *p;
GordonSin 0:0ed2a7c7190c 672 int len;
GordonSin 0:0ed2a7c7190c 673 #ifdef PPPOE_TODO
GordonSin 0:0ed2a7c7190c 674 int l1 = 0, l2 = 0; /* XXX: gcc */
GordonSin 0:0ed2a7c7190c 675 #endif /* PPPOE_TODO */
GordonSin 0:0ed2a7c7190c 676
GordonSin 0:0ed2a7c7190c 677 if (sc->sc_state >PPPOE_STATE_PADI_SENT) {
GordonSin 0:0ed2a7c7190c 678 PPPDEBUG(LOG_ERR, ("ERROR: pppoe_send_padi in state %d", sc->sc_state));
GordonSin 0:0ed2a7c7190c 679 }
GordonSin 0:0ed2a7c7190c 680
GordonSin 0:0ed2a7c7190c 681 /* calculate length of frame (excluding ethernet header + pppoe header) */
GordonSin 0:0ed2a7c7190c 682 len = 2 + 2 + 2 + 2 + sizeof sc; /* service name tag is required, host unique is send too */
GordonSin 0:0ed2a7c7190c 683 #ifdef PPPOE_TODO
GordonSin 0:0ed2a7c7190c 684 if (sc->sc_service_name != NULL) {
GordonSin 0:0ed2a7c7190c 685 l1 = (int)strlen(sc->sc_service_name);
GordonSin 0:0ed2a7c7190c 686 len += l1;
GordonSin 0:0ed2a7c7190c 687 }
GordonSin 0:0ed2a7c7190c 688 if (sc->sc_concentrator_name != NULL) {
GordonSin 0:0ed2a7c7190c 689 l2 = (int)strlen(sc->sc_concentrator_name);
GordonSin 0:0ed2a7c7190c 690 len += 2 + 2 + l2;
GordonSin 0:0ed2a7c7190c 691 }
GordonSin 0:0ed2a7c7190c 692 #endif /* PPPOE_TODO */
GordonSin 0:0ed2a7c7190c 693 LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
GordonSin 0:0ed2a7c7190c 694 sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
GordonSin 0:0ed2a7c7190c 695
GordonSin 0:0ed2a7c7190c 696 /* allocate a buffer */
GordonSin 0:0ed2a7c7190c 697 pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
GordonSin 0:0ed2a7c7190c 698 if (!pb) {
GordonSin 0:0ed2a7c7190c 699 return ERR_MEM;
GordonSin 0:0ed2a7c7190c 700 }
GordonSin 0:0ed2a7c7190c 701 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
GordonSin 0:0ed2a7c7190c 702
GordonSin 0:0ed2a7c7190c 703 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
GordonSin 0:0ed2a7c7190c 704 /* fill in pkt */
GordonSin 0:0ed2a7c7190c 705 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADI, 0, (u16_t)len);
GordonSin 0:0ed2a7c7190c 706 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
GordonSin 0:0ed2a7c7190c 707 #ifdef PPPOE_TODO
GordonSin 0:0ed2a7c7190c 708 if (sc->sc_service_name != NULL) {
GordonSin 0:0ed2a7c7190c 709 PPPOE_ADD_16(p, l1);
GordonSin 0:0ed2a7c7190c 710 MEMCPY(p, sc->sc_service_name, l1);
GordonSin 0:0ed2a7c7190c 711 p += l1;
GordonSin 0:0ed2a7c7190c 712 } else
GordonSin 0:0ed2a7c7190c 713 #endif /* PPPOE_TODO */
GordonSin 0:0ed2a7c7190c 714 {
GordonSin 0:0ed2a7c7190c 715 PPPOE_ADD_16(p, 0);
GordonSin 0:0ed2a7c7190c 716 }
GordonSin 0:0ed2a7c7190c 717 #ifdef PPPOE_TODO
GordonSin 0:0ed2a7c7190c 718 if (sc->sc_concentrator_name != NULL) {
GordonSin 0:0ed2a7c7190c 719 PPPOE_ADD_16(p, PPPOE_TAG_ACNAME);
GordonSin 0:0ed2a7c7190c 720 PPPOE_ADD_16(p, l2);
GordonSin 0:0ed2a7c7190c 721 MEMCPY(p, sc->sc_concentrator_name, l2);
GordonSin 0:0ed2a7c7190c 722 p += l2;
GordonSin 0:0ed2a7c7190c 723 }
GordonSin 0:0ed2a7c7190c 724 #endif /* PPPOE_TODO */
GordonSin 0:0ed2a7c7190c 725 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
GordonSin 0:0ed2a7c7190c 726 PPPOE_ADD_16(p, sizeof(sc));
GordonSin 0:0ed2a7c7190c 727 MEMCPY(p, &sc, sizeof sc);
GordonSin 0:0ed2a7c7190c 728
GordonSin 0:0ed2a7c7190c 729 /* send pkt */
GordonSin 0:0ed2a7c7190c 730 return pppoe_output(sc, pb);
GordonSin 0:0ed2a7c7190c 731 }
GordonSin 0:0ed2a7c7190c 732
GordonSin 0:0ed2a7c7190c 733 static void
GordonSin 0:0ed2a7c7190c 734 pppoe_timeout(void *arg)
GordonSin 0:0ed2a7c7190c 735 {
GordonSin 0:0ed2a7c7190c 736 int retry_wait, err;
GordonSin 0:0ed2a7c7190c 737 struct pppoe_softc *sc = (struct pppoe_softc*)arg;
GordonSin 0:0ed2a7c7190c 738
GordonSin 0:0ed2a7c7190c 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));
GordonSin 0:0ed2a7c7190c 740
GordonSin 0:0ed2a7c7190c 741 switch (sc->sc_state) {
GordonSin 0:0ed2a7c7190c 742 case PPPOE_STATE_PADI_SENT:
GordonSin 0:0ed2a7c7190c 743 /*
GordonSin 0:0ed2a7c7190c 744 * We have two basic ways of retrying:
GordonSin 0:0ed2a7c7190c 745 * - Quick retry mode: try a few times in short sequence
GordonSin 0:0ed2a7c7190c 746 * - Slow retry mode: we already had a connection successfully
GordonSin 0:0ed2a7c7190c 747 * established and will try infinitely (without user
GordonSin 0:0ed2a7c7190c 748 * intervention)
GordonSin 0:0ed2a7c7190c 749 * We only enter slow retry mode if IFF_LINK1 (aka autodial)
GordonSin 0:0ed2a7c7190c 750 * is not set.
GordonSin 0:0ed2a7c7190c 751 */
GordonSin 0:0ed2a7c7190c 752
GordonSin 0:0ed2a7c7190c 753 /* initialize for quick retry mode */
GordonSin 0:0ed2a7c7190c 754 retry_wait = PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried);
GordonSin 0:0ed2a7c7190c 755
GordonSin 0:0ed2a7c7190c 756 sc->sc_padi_retried++;
GordonSin 0:0ed2a7c7190c 757 if (sc->sc_padi_retried >= PPPOE_DISC_MAXPADI) {
GordonSin 0:0ed2a7c7190c 758 #if 0
GordonSin 0:0ed2a7c7190c 759 if ((sc->sc_sppp.pp_if.if_flags & IFF_LINK1) == 0) {
GordonSin 0:0ed2a7c7190c 760 /* slow retry mode */
GordonSin 0:0ed2a7c7190c 761 retry_wait = PPPOE_SLOW_RETRY;
GordonSin 0:0ed2a7c7190c 762 } else
GordonSin 0:0ed2a7c7190c 763 #endif
GordonSin 0:0ed2a7c7190c 764 {
GordonSin 0:0ed2a7c7190c 765 pppoe_abort_connect(sc);
GordonSin 0:0ed2a7c7190c 766 return;
GordonSin 0:0ed2a7c7190c 767 }
GordonSin 0:0ed2a7c7190c 768 }
GordonSin 0:0ed2a7c7190c 769 if ((err = pppoe_send_padi(sc)) != 0) {
GordonSin 0:0ed2a7c7190c 770 sc->sc_padi_retried--;
GordonSin 0:0ed2a7c7190c 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));
GordonSin 0:0ed2a7c7190c 772 }
GordonSin 0:0ed2a7c7190c 773 sys_timeout(retry_wait, pppoe_timeout, sc);
GordonSin 0:0ed2a7c7190c 774 break;
GordonSin 0:0ed2a7c7190c 775
GordonSin 0:0ed2a7c7190c 776 case PPPOE_STATE_PADR_SENT:
GordonSin 0:0ed2a7c7190c 777 sc->sc_padr_retried++;
GordonSin 0:0ed2a7c7190c 778 if (sc->sc_padr_retried >= PPPOE_DISC_MAXPADR) {
GordonSin 0:0ed2a7c7190c 779 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
GordonSin 0:0ed2a7c7190c 780 sc->sc_state = PPPOE_STATE_PADI_SENT;
GordonSin 0:0ed2a7c7190c 781 sc->sc_padr_retried = 0;
GordonSin 0:0ed2a7c7190c 782 if ((err = pppoe_send_padi(sc)) != 0) {
GordonSin 0:0ed2a7c7190c 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));
GordonSin 0:0ed2a7c7190c 784 }
GordonSin 0:0ed2a7c7190c 785 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried), pppoe_timeout, sc);
GordonSin 0:0ed2a7c7190c 786 return;
GordonSin 0:0ed2a7c7190c 787 }
GordonSin 0:0ed2a7c7190c 788 if ((err = pppoe_send_padr(sc)) != 0) {
GordonSin 0:0ed2a7c7190c 789 sc->sc_padr_retried--;
GordonSin 0:0ed2a7c7190c 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));
GordonSin 0:0ed2a7c7190c 791 }
GordonSin 0:0ed2a7c7190c 792 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
GordonSin 0:0ed2a7c7190c 793 break;
GordonSin 0:0ed2a7c7190c 794 case PPPOE_STATE_CLOSING:
GordonSin 0:0ed2a7c7190c 795 pppoe_do_disconnect(sc);
GordonSin 0:0ed2a7c7190c 796 break;
GordonSin 0:0ed2a7c7190c 797 default:
GordonSin 0:0ed2a7c7190c 798 return; /* all done, work in peace */
GordonSin 0:0ed2a7c7190c 799 }
GordonSin 0:0ed2a7c7190c 800 }
GordonSin 0:0ed2a7c7190c 801
GordonSin 0:0ed2a7c7190c 802 /* Start a connection (i.e. initiate discovery phase) */
GordonSin 0:0ed2a7c7190c 803 int
GordonSin 0:0ed2a7c7190c 804 pppoe_connect(struct pppoe_softc *sc)
GordonSin 0:0ed2a7c7190c 805 {
GordonSin 0:0ed2a7c7190c 806 int err;
GordonSin 0:0ed2a7c7190c 807
GordonSin 0:0ed2a7c7190c 808 if (sc->sc_state != PPPOE_STATE_INITIAL) {
GordonSin 0:0ed2a7c7190c 809 return EBUSY;
GordonSin 0:0ed2a7c7190c 810 }
GordonSin 0:0ed2a7c7190c 811
GordonSin 0:0ed2a7c7190c 812 #ifdef PPPOE_SERVER
GordonSin 0:0ed2a7c7190c 813 /* wait PADI if IFF_PASSIVE */
GordonSin 0:0ed2a7c7190c 814 if ((sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
GordonSin 0:0ed2a7c7190c 815 return 0;
GordonSin 0:0ed2a7c7190c 816 }
GordonSin 0:0ed2a7c7190c 817 #endif
GordonSin 0:0ed2a7c7190c 818 /* save state, in case we fail to send PADI */
GordonSin 0:0ed2a7c7190c 819 sc->sc_state = PPPOE_STATE_PADI_SENT;
GordonSin 0:0ed2a7c7190c 820 sc->sc_padr_retried = 0;
GordonSin 0:0ed2a7c7190c 821 err = pppoe_send_padi(sc);
GordonSin 0:0ed2a7c7190c 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));
GordonSin 0:0ed2a7c7190c 823 sys_timeout(PPPOE_DISC_TIMEOUT, pppoe_timeout, sc);
GordonSin 0:0ed2a7c7190c 824 return err;
GordonSin 0:0ed2a7c7190c 825 }
GordonSin 0:0ed2a7c7190c 826
GordonSin 0:0ed2a7c7190c 827 /* disconnect */
GordonSin 0:0ed2a7c7190c 828 void
GordonSin 0:0ed2a7c7190c 829 pppoe_disconnect(struct pppoe_softc *sc)
GordonSin 0:0ed2a7c7190c 830 {
GordonSin 0:0ed2a7c7190c 831 if (sc->sc_state < PPPOE_STATE_SESSION) {
GordonSin 0:0ed2a7c7190c 832 return;
GordonSin 0:0ed2a7c7190c 833 }
GordonSin 0:0ed2a7c7190c 834 /*
GordonSin 0:0ed2a7c7190c 835 * Do not call pppoe_disconnect here, the upper layer state
GordonSin 0:0ed2a7c7190c 836 * machine gets confused by this. We must return from this
GordonSin 0:0ed2a7c7190c 837 * function and defer disconnecting to the timeout handler.
GordonSin 0:0ed2a7c7190c 838 */
GordonSin 0:0ed2a7c7190c 839 sc->sc_state = PPPOE_STATE_CLOSING;
GordonSin 0:0ed2a7c7190c 840 sys_timeout(20, pppoe_timeout, sc);
GordonSin 0:0ed2a7c7190c 841 }
GordonSin 0:0ed2a7c7190c 842
GordonSin 0:0ed2a7c7190c 843 static int
GordonSin 0:0ed2a7c7190c 844 pppoe_do_disconnect(struct pppoe_softc *sc)
GordonSin 0:0ed2a7c7190c 845 {
GordonSin 0:0ed2a7c7190c 846 int err;
GordonSin 0:0ed2a7c7190c 847
GordonSin 0:0ed2a7c7190c 848 if (sc->sc_state < PPPOE_STATE_SESSION) {
GordonSin 0:0ed2a7c7190c 849 err = EBUSY;
GordonSin 0:0ed2a7c7190c 850 } else {
GordonSin 0:0ed2a7c7190c 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));
GordonSin 0:0ed2a7c7190c 852 err = pppoe_send_padt(sc->sc_ethif, sc->sc_session, (const u8_t *)&sc->sc_dest);
GordonSin 0:0ed2a7c7190c 853 }
GordonSin 0:0ed2a7c7190c 854
GordonSin 0:0ed2a7c7190c 855 /* cleanup softc */
GordonSin 0:0ed2a7c7190c 856 sc->sc_state = PPPOE_STATE_INITIAL;
GordonSin 0:0ed2a7c7190c 857 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
GordonSin 0:0ed2a7c7190c 858 sc->sc_ac_cookie_len = 0;
GordonSin 0:0ed2a7c7190c 859 #ifdef PPPOE_SERVER
GordonSin 0:0ed2a7c7190c 860 if (sc->sc_hunique) {
GordonSin 0:0ed2a7c7190c 861 mem_free(sc->sc_hunique);
GordonSin 0:0ed2a7c7190c 862 sc->sc_hunique = NULL;
GordonSin 0:0ed2a7c7190c 863 }
GordonSin 0:0ed2a7c7190c 864 sc->sc_hunique_len = 0;
GordonSin 0:0ed2a7c7190c 865 #endif
GordonSin 0:0ed2a7c7190c 866 sc->sc_session = 0;
GordonSin 0:0ed2a7c7190c 867
GordonSin 0:0ed2a7c7190c 868 sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
GordonSin 0:0ed2a7c7190c 869
GordonSin 0:0ed2a7c7190c 870 return err;
GordonSin 0:0ed2a7c7190c 871 }
GordonSin 0:0ed2a7c7190c 872
GordonSin 0:0ed2a7c7190c 873 /* Connection attempt aborted */
GordonSin 0:0ed2a7c7190c 874 static void
GordonSin 0:0ed2a7c7190c 875 pppoe_abort_connect(struct pppoe_softc *sc)
GordonSin 0:0ed2a7c7190c 876 {
GordonSin 0:0ed2a7c7190c 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);
GordonSin 0:0ed2a7c7190c 878 sc->sc_state = PPPOE_STATE_CLOSING;
GordonSin 0:0ed2a7c7190c 879
GordonSin 0:0ed2a7c7190c 880 sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
GordonSin 0:0ed2a7c7190c 881
GordonSin 0:0ed2a7c7190c 882 /* clear connection state */
GordonSin 0:0ed2a7c7190c 883 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
GordonSin 0:0ed2a7c7190c 884 sc->sc_state = PPPOE_STATE_INITIAL;
GordonSin 0:0ed2a7c7190c 885 }
GordonSin 0:0ed2a7c7190c 886
GordonSin 0:0ed2a7c7190c 887 /* Send a PADR packet */
GordonSin 0:0ed2a7c7190c 888 static err_t
GordonSin 0:0ed2a7c7190c 889 pppoe_send_padr(struct pppoe_softc *sc)
GordonSin 0:0ed2a7c7190c 890 {
GordonSin 0:0ed2a7c7190c 891 struct pbuf *pb;
GordonSin 0:0ed2a7c7190c 892 u8_t *p;
GordonSin 0:0ed2a7c7190c 893 size_t len;
GordonSin 0:0ed2a7c7190c 894 #ifdef PPPOE_TODO
GordonSin 0:0ed2a7c7190c 895 size_t l1 = 0; /* XXX: gcc */
GordonSin 0:0ed2a7c7190c 896 #endif /* PPPOE_TODO */
GordonSin 0:0ed2a7c7190c 897
GordonSin 0:0ed2a7c7190c 898 if (sc->sc_state != PPPOE_STATE_PADR_SENT) {
GordonSin 0:0ed2a7c7190c 899 return ERR_CONN;
GordonSin 0:0ed2a7c7190c 900 }
GordonSin 0:0ed2a7c7190c 901
GordonSin 0:0ed2a7c7190c 902 len = 2 + 2 + 2 + 2 + sizeof(sc); /* service name, host unique */
GordonSin 0:0ed2a7c7190c 903 #ifdef PPPOE_TODO
GordonSin 0:0ed2a7c7190c 904 if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
GordonSin 0:0ed2a7c7190c 905 l1 = strlen(sc->sc_service_name);
GordonSin 0:0ed2a7c7190c 906 len += l1;
GordonSin 0:0ed2a7c7190c 907 }
GordonSin 0:0ed2a7c7190c 908 #endif /* PPPOE_TODO */
GordonSin 0:0ed2a7c7190c 909 if (sc->sc_ac_cookie_len > 0) {
GordonSin 0:0ed2a7c7190c 910 len += 2 + 2 + sc->sc_ac_cookie_len; /* AC cookie */
GordonSin 0:0ed2a7c7190c 911 }
GordonSin 0:0ed2a7c7190c 912 LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
GordonSin 0:0ed2a7c7190c 913 sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
GordonSin 0:0ed2a7c7190c 914 pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
GordonSin 0:0ed2a7c7190c 915 if (!pb) {
GordonSin 0:0ed2a7c7190c 916 return ERR_MEM;
GordonSin 0:0ed2a7c7190c 917 }
GordonSin 0:0ed2a7c7190c 918 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
GordonSin 0:0ed2a7c7190c 919 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
GordonSin 0:0ed2a7c7190c 920 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADR, 0, len);
GordonSin 0:0ed2a7c7190c 921 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
GordonSin 0:0ed2a7c7190c 922 #ifdef PPPOE_TODO
GordonSin 0:0ed2a7c7190c 923 if (sc->sc_service_name != NULL) {
GordonSin 0:0ed2a7c7190c 924 PPPOE_ADD_16(p, l1);
GordonSin 0:0ed2a7c7190c 925 MEMCPY(p, sc->sc_service_name, l1);
GordonSin 0:0ed2a7c7190c 926 p += l1;
GordonSin 0:0ed2a7c7190c 927 } else
GordonSin 0:0ed2a7c7190c 928 #endif /* PPPOE_TODO */
GordonSin 0:0ed2a7c7190c 929 {
GordonSin 0:0ed2a7c7190c 930 PPPOE_ADD_16(p, 0);
GordonSin 0:0ed2a7c7190c 931 }
GordonSin 0:0ed2a7c7190c 932 if (sc->sc_ac_cookie_len > 0) {
GordonSin 0:0ed2a7c7190c 933 PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
GordonSin 0:0ed2a7c7190c 934 PPPOE_ADD_16(p, sc->sc_ac_cookie_len);
GordonSin 0:0ed2a7c7190c 935 MEMCPY(p, sc->sc_ac_cookie, sc->sc_ac_cookie_len);
GordonSin 0:0ed2a7c7190c 936 p += sc->sc_ac_cookie_len;
GordonSin 0:0ed2a7c7190c 937 }
GordonSin 0:0ed2a7c7190c 938 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
GordonSin 0:0ed2a7c7190c 939 PPPOE_ADD_16(p, sizeof(sc));
GordonSin 0:0ed2a7c7190c 940 MEMCPY(p, &sc, sizeof sc);
GordonSin 0:0ed2a7c7190c 941
GordonSin 0:0ed2a7c7190c 942 return pppoe_output(sc, pb);
GordonSin 0:0ed2a7c7190c 943 }
GordonSin 0:0ed2a7c7190c 944
GordonSin 0:0ed2a7c7190c 945 /* send a PADT packet */
GordonSin 0:0ed2a7c7190c 946 static err_t
GordonSin 0:0ed2a7c7190c 947 pppoe_send_padt(struct netif *outgoing_if, u_int session, const u8_t *dest)
GordonSin 0:0ed2a7c7190c 948 {
GordonSin 0:0ed2a7c7190c 949 struct pbuf *pb;
GordonSin 0:0ed2a7c7190c 950 struct eth_hdr *ethhdr;
GordonSin 0:0ed2a7c7190c 951 err_t res;
GordonSin 0:0ed2a7c7190c 952 u8_t *p;
GordonSin 0:0ed2a7c7190c 953
GordonSin 0:0ed2a7c7190c 954 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN, PBUF_RAM);
GordonSin 0:0ed2a7c7190c 955 if (!pb) {
GordonSin 0:0ed2a7c7190c 956 return ERR_MEM;
GordonSin 0:0ed2a7c7190c 957 }
GordonSin 0:0ed2a7c7190c 958 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
GordonSin 0:0ed2a7c7190c 959
GordonSin 0:0ed2a7c7190c 960 ethhdr = (struct eth_hdr *)pb->payload;
GordonSin 0:0ed2a7c7190c 961 ethhdr->type = PP_HTONS(ETHTYPE_PPPOEDISC);
GordonSin 0:0ed2a7c7190c 962 MEMCPY(ethhdr->dest.addr, dest, sizeof(ethhdr->dest.addr));
GordonSin 0:0ed2a7c7190c 963 MEMCPY(ethhdr->src.addr, ((struct eth_addr *)outgoing_if->hwaddr)->addr, sizeof(ethhdr->src.addr));
GordonSin 0:0ed2a7c7190c 964
GordonSin 0:0ed2a7c7190c 965 p = (u8_t*)(ethhdr + 1);
GordonSin 0:0ed2a7c7190c 966 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADT, session, 0);
GordonSin 0:0ed2a7c7190c 967
GordonSin 0:0ed2a7c7190c 968 res = outgoing_if->linkoutput(outgoing_if, pb);
GordonSin 0:0ed2a7c7190c 969
GordonSin 0:0ed2a7c7190c 970 pbuf_free(pb);
GordonSin 0:0ed2a7c7190c 971
GordonSin 0:0ed2a7c7190c 972 return res;
GordonSin 0:0ed2a7c7190c 973 }
GordonSin 0:0ed2a7c7190c 974
GordonSin 0:0ed2a7c7190c 975 #ifdef PPPOE_SERVER
GordonSin 0:0ed2a7c7190c 976 static err_t
GordonSin 0:0ed2a7c7190c 977 pppoe_send_pado(struct pppoe_softc *sc)
GordonSin 0:0ed2a7c7190c 978 {
GordonSin 0:0ed2a7c7190c 979 struct pbuf *pb;
GordonSin 0:0ed2a7c7190c 980 u8_t *p;
GordonSin 0:0ed2a7c7190c 981 size_t len;
GordonSin 0:0ed2a7c7190c 982
GordonSin 0:0ed2a7c7190c 983 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
GordonSin 0:0ed2a7c7190c 984 return ERR_CONN;
GordonSin 0:0ed2a7c7190c 985 }
GordonSin 0:0ed2a7c7190c 986
GordonSin 0:0ed2a7c7190c 987 /* calc length */
GordonSin 0:0ed2a7c7190c 988 len = 0;
GordonSin 0:0ed2a7c7190c 989 /* include ac_cookie */
GordonSin 0:0ed2a7c7190c 990 len += 2 + 2 + sizeof(sc);
GordonSin 0:0ed2a7c7190c 991 /* include hunique */
GordonSin 0:0ed2a7c7190c 992 len += 2 + 2 + sc->sc_hunique_len;
GordonSin 0:0ed2a7c7190c 993 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
GordonSin 0:0ed2a7c7190c 994 if (!pb) {
GordonSin 0:0ed2a7c7190c 995 return ERR_MEM;
GordonSin 0:0ed2a7c7190c 996 }
GordonSin 0:0ed2a7c7190c 997 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
GordonSin 0:0ed2a7c7190c 998 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
GordonSin 0:0ed2a7c7190c 999 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADO, 0, len);
GordonSin 0:0ed2a7c7190c 1000 PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
GordonSin 0:0ed2a7c7190c 1001 PPPOE_ADD_16(p, sizeof(sc));
GordonSin 0:0ed2a7c7190c 1002 MEMCPY(p, &sc, sizeof(sc));
GordonSin 0:0ed2a7c7190c 1003 p += sizeof(sc);
GordonSin 0:0ed2a7c7190c 1004 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
GordonSin 0:0ed2a7c7190c 1005 PPPOE_ADD_16(p, sc->sc_hunique_len);
GordonSin 0:0ed2a7c7190c 1006 MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
GordonSin 0:0ed2a7c7190c 1007 return pppoe_output(sc, pb);
GordonSin 0:0ed2a7c7190c 1008 }
GordonSin 0:0ed2a7c7190c 1009
GordonSin 0:0ed2a7c7190c 1010 static err_t
GordonSin 0:0ed2a7c7190c 1011 pppoe_send_pads(struct pppoe_softc *sc)
GordonSin 0:0ed2a7c7190c 1012 {
GordonSin 0:0ed2a7c7190c 1013 struct pbuf *pb;
GordonSin 0:0ed2a7c7190c 1014 u8_t *p;
GordonSin 0:0ed2a7c7190c 1015 size_t len, l1 = 0; /* XXX: gcc */
GordonSin 0:0ed2a7c7190c 1016
GordonSin 0:0ed2a7c7190c 1017 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
GordonSin 0:0ed2a7c7190c 1018 return ERR_CONN;
GordonSin 0:0ed2a7c7190c 1019 }
GordonSin 0:0ed2a7c7190c 1020
GordonSin 0:0ed2a7c7190c 1021 sc->sc_session = mono_time.tv_sec % 0xff + 1;
GordonSin 0:0ed2a7c7190c 1022 /* calc length */
GordonSin 0:0ed2a7c7190c 1023 len = 0;
GordonSin 0:0ed2a7c7190c 1024 /* include hunique */
GordonSin 0:0ed2a7c7190c 1025 len += 2 + 2 + 2 + 2 + sc->sc_hunique_len; /* service name, host unique*/
GordonSin 0:0ed2a7c7190c 1026 if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
GordonSin 0:0ed2a7c7190c 1027 l1 = strlen(sc->sc_service_name);
GordonSin 0:0ed2a7c7190c 1028 len += l1;
GordonSin 0:0ed2a7c7190c 1029 }
GordonSin 0:0ed2a7c7190c 1030 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
GordonSin 0:0ed2a7c7190c 1031 if (!pb) {
GordonSin 0:0ed2a7c7190c 1032 return ERR_MEM;
GordonSin 0:0ed2a7c7190c 1033 }
GordonSin 0:0ed2a7c7190c 1034 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
GordonSin 0:0ed2a7c7190c 1035 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
GordonSin 0:0ed2a7c7190c 1036 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADS, sc->sc_session, len);
GordonSin 0:0ed2a7c7190c 1037 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
GordonSin 0:0ed2a7c7190c 1038 if (sc->sc_service_name != NULL) {
GordonSin 0:0ed2a7c7190c 1039 PPPOE_ADD_16(p, l1);
GordonSin 0:0ed2a7c7190c 1040 MEMCPY(p, sc->sc_service_name, l1);
GordonSin 0:0ed2a7c7190c 1041 p += l1;
GordonSin 0:0ed2a7c7190c 1042 } else {
GordonSin 0:0ed2a7c7190c 1043 PPPOE_ADD_16(p, 0);
GordonSin 0:0ed2a7c7190c 1044 }
GordonSin 0:0ed2a7c7190c 1045 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
GordonSin 0:0ed2a7c7190c 1046 PPPOE_ADD_16(p, sc->sc_hunique_len);
GordonSin 0:0ed2a7c7190c 1047 MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
GordonSin 0:0ed2a7c7190c 1048 return pppoe_output(sc, pb);
GordonSin 0:0ed2a7c7190c 1049 }
GordonSin 0:0ed2a7c7190c 1050 #endif
GordonSin 0:0ed2a7c7190c 1051
GordonSin 0:0ed2a7c7190c 1052 err_t
GordonSin 0:0ed2a7c7190c 1053 pppoe_xmit(struct pppoe_softc *sc, struct pbuf *pb)
GordonSin 0:0ed2a7c7190c 1054 {
GordonSin 0:0ed2a7c7190c 1055 u8_t *p;
GordonSin 0:0ed2a7c7190c 1056 size_t len;
GordonSin 0:0ed2a7c7190c 1057
GordonSin 0:0ed2a7c7190c 1058 /* are we ready to process data yet? */
GordonSin 0:0ed2a7c7190c 1059 if (sc->sc_state < PPPOE_STATE_SESSION) {
GordonSin 0:0ed2a7c7190c 1060 /*sppp_flush(&sc->sc_sppp.pp_if);*/
GordonSin 0:0ed2a7c7190c 1061 pbuf_free(pb);
GordonSin 0:0ed2a7c7190c 1062 return ERR_CONN;
GordonSin 0:0ed2a7c7190c 1063 }
GordonSin 0:0ed2a7c7190c 1064
GordonSin 0:0ed2a7c7190c 1065 len = pb->tot_len;
GordonSin 0:0ed2a7c7190c 1066
GordonSin 0:0ed2a7c7190c 1067 /* make room for Ethernet header - should not fail */
GordonSin 0:0ed2a7c7190c 1068 if (pbuf_header(pb, sizeof(struct eth_hdr) + PPPOE_HEADERLEN) != 0) {
GordonSin 0:0ed2a7c7190c 1069 /* bail out */
GordonSin 0:0ed2a7c7190c 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));
GordonSin 0:0ed2a7c7190c 1071 LINK_STATS_INC(link.lenerr);
GordonSin 0:0ed2a7c7190c 1072 pbuf_free(pb);
GordonSin 0:0ed2a7c7190c 1073 return ERR_BUF;
GordonSin 0:0ed2a7c7190c 1074 }
GordonSin 0:0ed2a7c7190c 1075
GordonSin 0:0ed2a7c7190c 1076 p = (u8_t*)pb->payload + sizeof(struct eth_hdr);
GordonSin 0:0ed2a7c7190c 1077 PPPOE_ADD_HEADER(p, 0, sc->sc_session, len);
GordonSin 0:0ed2a7c7190c 1078
GordonSin 0:0ed2a7c7190c 1079 return pppoe_output(sc, pb);
GordonSin 0:0ed2a7c7190c 1080 }
GordonSin 0:0ed2a7c7190c 1081
GordonSin 0:0ed2a7c7190c 1082 #if 0 /*def PFIL_HOOKS*/
GordonSin 0:0ed2a7c7190c 1083 static int
GordonSin 0:0ed2a7c7190c 1084 pppoe_ifattach_hook(void *arg, struct pbuf **mp, struct netif *ifp, int dir)
GordonSin 0:0ed2a7c7190c 1085 {
GordonSin 0:0ed2a7c7190c 1086 struct pppoe_softc *sc;
GordonSin 0:0ed2a7c7190c 1087 int s;
GordonSin 0:0ed2a7c7190c 1088
GordonSin 0:0ed2a7c7190c 1089 if (mp != (struct pbuf **)PFIL_IFNET_DETACH) {
GordonSin 0:0ed2a7c7190c 1090 return 0;
GordonSin 0:0ed2a7c7190c 1091 }
GordonSin 0:0ed2a7c7190c 1092
GordonSin 0:0ed2a7c7190c 1093 LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
GordonSin 0:0ed2a7c7190c 1094 if (sc->sc_ethif != ifp) {
GordonSin 0:0ed2a7c7190c 1095 continue;
GordonSin 0:0ed2a7c7190c 1096 }
GordonSin 0:0ed2a7c7190c 1097 if (sc->sc_sppp.pp_if.if_flags & IFF_UP) {
GordonSin 0:0ed2a7c7190c 1098 sc->sc_sppp.pp_if.if_flags &= ~(IFF_UP|IFF_RUNNING);
GordonSin 0:0ed2a7c7190c 1099 printf("%c%c%"U16_F": ethernet interface detached, going down\n",
GordonSin 0:0ed2a7c7190c 1100 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
GordonSin 0:0ed2a7c7190c 1101 }
GordonSin 0:0ed2a7c7190c 1102 sc->sc_ethif = NULL;
GordonSin 0:0ed2a7c7190c 1103 pppoe_clear_softc(sc, "ethernet interface detached");
GordonSin 0:0ed2a7c7190c 1104 }
GordonSin 0:0ed2a7c7190c 1105
GordonSin 0:0ed2a7c7190c 1106 return 0;
GordonSin 0:0ed2a7c7190c 1107 }
GordonSin 0:0ed2a7c7190c 1108 #endif
GordonSin 0:0ed2a7c7190c 1109
GordonSin 0:0ed2a7c7190c 1110 static void
GordonSin 0:0ed2a7c7190c 1111 pppoe_clear_softc(struct pppoe_softc *sc, const char *message)
GordonSin 0:0ed2a7c7190c 1112 {
GordonSin 0:0ed2a7c7190c 1113 LWIP_UNUSED_ARG(message);
GordonSin 0:0ed2a7c7190c 1114
GordonSin 0:0ed2a7c7190c 1115 /* stop timer */
GordonSin 0:0ed2a7c7190c 1116 sys_untimeout(pppoe_timeout, sc);
GordonSin 0:0ed2a7c7190c 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));
GordonSin 0:0ed2a7c7190c 1118
GordonSin 0:0ed2a7c7190c 1119 /* fix our state */
GordonSin 0:0ed2a7c7190c 1120 sc->sc_state = PPPOE_STATE_INITIAL;
GordonSin 0:0ed2a7c7190c 1121
GordonSin 0:0ed2a7c7190c 1122 /* notify upper layers */
GordonSin 0:0ed2a7c7190c 1123 sc->sc_linkStatusCB(sc->sc_pd, 0);
GordonSin 0:0ed2a7c7190c 1124
GordonSin 0:0ed2a7c7190c 1125 /* clean up softc */
GordonSin 0:0ed2a7c7190c 1126 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
GordonSin 0:0ed2a7c7190c 1127 sc->sc_ac_cookie_len = 0;
GordonSin 0:0ed2a7c7190c 1128 sc->sc_session = 0;
GordonSin 0:0ed2a7c7190c 1129 }
GordonSin 0:0ed2a7c7190c 1130
GordonSin 0:0ed2a7c7190c 1131 #endif /* PPPOE_SUPPORT */
GordonSin 0:0ed2a7c7190c 1132