Adam Green / EthernetInterface

Deprecated fork of old network stack source from github. Please use official library instead: https://mbed.org/users/mbed_official/code/EthernetInterface/

lwip/netif/ppp/ppp_oe.c@1:eadc868c2acf, 2013-10-26 (annotated)

Committer:
AdamGreen
Date:
Sat Oct 26 08:51:36 2013 +0000
Revision:
1:eadc868c2acf
Parent:
0:3b00827bb0b7 
Fix TCP checksum bug and stranded large TCP segments.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AdamGreen 0:3b00827bb0b7 1 /*****************************************************************************
AdamGreen 0:3b00827bb0b7 2 * ppp_oe.c - PPP Over Ethernet implementation for lwIP.
AdamGreen 0:3b00827bb0b7 3 *
AdamGreen 0:3b00827bb0b7 4 * Copyright (c) 2006 by Marc Boucher, Services Informatiques (MBSI) inc.
AdamGreen 0:3b00827bb0b7 5 *
AdamGreen 0:3b00827bb0b7 6 * The authors hereby grant permission to use, copy, modify, distribute,
AdamGreen 0:3b00827bb0b7 7 * and license this software and its documentation for any purpose, provided
AdamGreen 0:3b00827bb0b7 8 * that existing copyright notices are retained in all copies and that this
AdamGreen 0:3b00827bb0b7 9 * notice and the following disclaimer are included verbatim in any
AdamGreen 0:3b00827bb0b7 10 * distributions. No written agreement, license, or royalty fee is required
AdamGreen 0:3b00827bb0b7 11 * for any of the authorized uses.
AdamGreen 0:3b00827bb0b7 12 *
AdamGreen 0:3b00827bb0b7 13 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
AdamGreen 0:3b00827bb0b7 14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
AdamGreen 0:3b00827bb0b7 15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
AdamGreen 0:3b00827bb0b7 16 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
AdamGreen 0:3b00827bb0b7 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
AdamGreen 0:3b00827bb0b7 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
AdamGreen 0:3b00827bb0b7 19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
AdamGreen 0:3b00827bb0b7 20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
AdamGreen 0:3b00827bb0b7 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
AdamGreen 0:3b00827bb0b7 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AdamGreen 0:3b00827bb0b7 23 *
AdamGreen 0:3b00827bb0b7 24 ******************************************************************************
AdamGreen 0:3b00827bb0b7 25 * REVISION HISTORY
AdamGreen 0:3b00827bb0b7 26 *
AdamGreen 0:3b00827bb0b7 27 * 06-01-01 Marc Boucher <marc@mbsi.ca>
AdamGreen 0:3b00827bb0b7 28 * Ported to lwIP.
AdamGreen 0:3b00827bb0b7 29 *****************************************************************************/
AdamGreen 0:3b00827bb0b7 30
AdamGreen 0:3b00827bb0b7 31
AdamGreen 0:3b00827bb0b7 32
AdamGreen 0:3b00827bb0b7 33 /* based on NetBSD: if_pppoe.c,v 1.64 2006/01/31 23:50:15 martin Exp */
AdamGreen 0:3b00827bb0b7 34
AdamGreen 0:3b00827bb0b7 35 /*-
AdamGreen 0:3b00827bb0b7 36 * Copyright (c) 2002 The NetBSD Foundation, Inc.
AdamGreen 0:3b00827bb0b7 37 * All rights reserved.
AdamGreen 0:3b00827bb0b7 38 *
AdamGreen 0:3b00827bb0b7 39 * This code is derived from software contributed to The NetBSD Foundation
AdamGreen 0:3b00827bb0b7 40 * by Martin Husemann <martin@NetBSD.org>.
AdamGreen 0:3b00827bb0b7 41 *
AdamGreen 0:3b00827bb0b7 42 * Redistribution and use in source and binary forms, with or without
AdamGreen 0:3b00827bb0b7 43 * modification, are permitted provided that the following conditions
AdamGreen 0:3b00827bb0b7 44 * are met:
AdamGreen 0:3b00827bb0b7 45 * 1. Redistributions of source code must retain the above copyright
AdamGreen 0:3b00827bb0b7 46 * notice, this list of conditions and the following disclaimer.
AdamGreen 0:3b00827bb0b7 47 * 2. Redistributions in binary form must reproduce the above copyright
AdamGreen 0:3b00827bb0b7 48 * notice, this list of conditions and the following disclaimer in the
AdamGreen 0:3b00827bb0b7 49 * documentation and/or other materials provided with the distribution.
AdamGreen 0:3b00827bb0b7 50 * 3. All advertising materials mentioning features or use of this software
AdamGreen 0:3b00827bb0b7 51 * must display the following acknowledgement:
AdamGreen 0:3b00827bb0b7 52 * This product includes software developed by the NetBSD
AdamGreen 0:3b00827bb0b7 53 * Foundation, Inc. and its contributors.
AdamGreen 0:3b00827bb0b7 54 * 4. Neither the name of The NetBSD Foundation nor the names of its
AdamGreen 0:3b00827bb0b7 55 * contributors may be used to endorse or promote products derived
AdamGreen 0:3b00827bb0b7 56 * from this software without specific prior written permission.
AdamGreen 0:3b00827bb0b7 57 *
AdamGreen 0:3b00827bb0b7 58 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
AdamGreen 0:3b00827bb0b7 59 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
AdamGreen 0:3b00827bb0b7 60 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
AdamGreen 0:3b00827bb0b7 61 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
AdamGreen 0:3b00827bb0b7 62 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
AdamGreen 0:3b00827bb0b7 63 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
AdamGreen 0:3b00827bb0b7 64 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
AdamGreen 0:3b00827bb0b7 65 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
AdamGreen 0:3b00827bb0b7 66 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
AdamGreen 0:3b00827bb0b7 67 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
AdamGreen 0:3b00827bb0b7 68 * POSSIBILITY OF SUCH DAMAGE.
AdamGreen 0:3b00827bb0b7 69 */
AdamGreen 0:3b00827bb0b7 70
AdamGreen 0:3b00827bb0b7 71 #include "lwip/opt.h"
AdamGreen 0:3b00827bb0b7 72
AdamGreen 0:3b00827bb0b7 73 #if PPPOE_SUPPORT /* don't build if not configured for use in lwipopts.h */
AdamGreen 0:3b00827bb0b7 74
AdamGreen 0:3b00827bb0b7 75 #include "netif/ppp_oe.h"
AdamGreen 0:3b00827bb0b7 76
AdamGreen 0:3b00827bb0b7 77 #include "ppp.h"
AdamGreen 0:3b00827bb0b7 78 #include "pppdebug.h"
AdamGreen 0:3b00827bb0b7 79
AdamGreen 0:3b00827bb0b7 80 #include "lwip/timers.h"
AdamGreen 0:3b00827bb0b7 81 #include "lwip/memp.h"
AdamGreen 0:3b00827bb0b7 82
AdamGreen 0:3b00827bb0b7 83 #include <string.h>
AdamGreen 0:3b00827bb0b7 84 #include <stdio.h>
AdamGreen 0:3b00827bb0b7 85
AdamGreen 0:3b00827bb0b7 86
AdamGreen 0:3b00827bb0b7 87 /* Add a 16 bit unsigned value to a buffer pointed to by PTR */
AdamGreen 0:3b00827bb0b7 88 #define PPPOE_ADD_16(PTR, VAL) \
AdamGreen 0:3b00827bb0b7 89 *(PTR)++ = (u8_t)((VAL) / 256); \
AdamGreen 0:3b00827bb0b7 90 *(PTR)++ = (u8_t)((VAL) % 256)
AdamGreen 0:3b00827bb0b7 91
AdamGreen 0:3b00827bb0b7 92 /* Add a complete PPPoE header to the buffer pointed to by PTR */
AdamGreen 0:3b00827bb0b7 93 #define PPPOE_ADD_HEADER(PTR, CODE, SESS, LEN) \
AdamGreen 0:3b00827bb0b7 94 *(PTR)++ = PPPOE_VERTYPE; \
AdamGreen 0:3b00827bb0b7 95 *(PTR)++ = (CODE); \
AdamGreen 0:3b00827bb0b7 96 PPPOE_ADD_16(PTR, SESS); \
AdamGreen 0:3b00827bb0b7 97 PPPOE_ADD_16(PTR, LEN)
AdamGreen 0:3b00827bb0b7 98
AdamGreen 0:3b00827bb0b7 99 #define PPPOE_DISC_TIMEOUT (5*1000) /* base for quick timeout calculation */
AdamGreen 0:3b00827bb0b7 100 #define PPPOE_SLOW_RETRY (60*1000) /* persistent retry interval */
AdamGreen 0:3b00827bb0b7 101 #define PPPOE_DISC_MAXPADI 4 /* retry PADI four times (quickly) */
AdamGreen 0:3b00827bb0b7 102 #define PPPOE_DISC_MAXPADR 2 /* retry PADR twice */
AdamGreen 0:3b00827bb0b7 103
AdamGreen 0:3b00827bb0b7 104 #ifdef PPPOE_SERVER
AdamGreen 0:3b00827bb0b7 105 #error "PPPOE_SERVER is not yet supported under lwIP!"
AdamGreen 0:3b00827bb0b7 106 /* from if_spppsubr.c */
AdamGreen 0:3b00827bb0b7 107 #define IFF_PASSIVE IFF_LINK0 /* wait passively for connection */
AdamGreen 0:3b00827bb0b7 108 #endif
AdamGreen 0:3b00827bb0b7 109
AdamGreen 0:3b00827bb0b7 110 #ifndef PPPOE_ERRORSTRING_LEN
AdamGreen 0:3b00827bb0b7 111 #define PPPOE_ERRORSTRING_LEN 64
AdamGreen 0:3b00827bb0b7 112 #endif
AdamGreen 0:3b00827bb0b7 113 static char pppoe_error_tmp[PPPOE_ERRORSTRING_LEN];
AdamGreen 0:3b00827bb0b7 114
AdamGreen 0:3b00827bb0b7 115
AdamGreen 0:3b00827bb0b7 116 /* input routines */
AdamGreen 0:3b00827bb0b7 117 static void pppoe_dispatch_disc_pkt(struct netif *, struct pbuf *);
AdamGreen 0:3b00827bb0b7 118
AdamGreen 0:3b00827bb0b7 119 /* management routines */
AdamGreen 0:3b00827bb0b7 120 static int pppoe_do_disconnect(struct pppoe_softc *);
AdamGreen 0:3b00827bb0b7 121 static void pppoe_abort_connect(struct pppoe_softc *);
AdamGreen 0:3b00827bb0b7 122 static void pppoe_clear_softc(struct pppoe_softc *, const char *);
AdamGreen 0:3b00827bb0b7 123
AdamGreen 0:3b00827bb0b7 124 /* internal timeout handling */
AdamGreen 0:3b00827bb0b7 125 static void pppoe_timeout(void *);
AdamGreen 0:3b00827bb0b7 126
AdamGreen 0:3b00827bb0b7 127 /* sending actual protocol controll packets */
AdamGreen 0:3b00827bb0b7 128 static err_t pppoe_send_padi(struct pppoe_softc *);
AdamGreen 0:3b00827bb0b7 129 static err_t pppoe_send_padr(struct pppoe_softc *);
AdamGreen 0:3b00827bb0b7 130 #ifdef PPPOE_SERVER
AdamGreen 0:3b00827bb0b7 131 static err_t pppoe_send_pado(struct pppoe_softc *);
AdamGreen 0:3b00827bb0b7 132 static err_t pppoe_send_pads(struct pppoe_softc *);
AdamGreen 0:3b00827bb0b7 133 #endif
AdamGreen 0:3b00827bb0b7 134 static err_t pppoe_send_padt(struct netif *, u_int, const u8_t *);
AdamGreen 0:3b00827bb0b7 135
AdamGreen 0:3b00827bb0b7 136 /* internal helper functions */
AdamGreen 0:3b00827bb0b7 137 static struct pppoe_softc * pppoe_find_softc_by_session(u_int, struct netif *);
AdamGreen 0:3b00827bb0b7 138 static struct pppoe_softc * pppoe_find_softc_by_hunique(u8_t *, size_t, struct netif *);
AdamGreen 0:3b00827bb0b7 139
AdamGreen 0:3b00827bb0b7 140 /** linked list of created pppoe interfaces */
AdamGreen 0:3b00827bb0b7 141 static struct pppoe_softc *pppoe_softc_list;
AdamGreen 0:3b00827bb0b7 142
AdamGreen 0:3b00827bb0b7 143 err_t
AdamGreen 0:3b00827bb0b7 144 pppoe_create(struct netif *ethif, int pd, void (*linkStatusCB)(int pd, int up), struct pppoe_softc **scptr)
AdamGreen 0:3b00827bb0b7 145 {
AdamGreen 0:3b00827bb0b7 146 struct pppoe_softc *sc;
AdamGreen 0:3b00827bb0b7 147
AdamGreen 0:3b00827bb0b7 148 sc = (struct pppoe_softc *)memp_malloc(MEMP_PPPOE_IF);
AdamGreen 0:3b00827bb0b7 149 if (sc == NULL) {
AdamGreen 0:3b00827bb0b7 150 *scptr = NULL;
AdamGreen 0:3b00827bb0b7 151 return ERR_MEM;
AdamGreen 0:3b00827bb0b7 152 }
AdamGreen 0:3b00827bb0b7 153 memset(sc, 0, sizeof(struct pppoe_softc));
AdamGreen 0:3b00827bb0b7 154
AdamGreen 0:3b00827bb0b7 155 /* changed to real address later */
AdamGreen 0:3b00827bb0b7 156 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
AdamGreen 0:3b00827bb0b7 157
AdamGreen 0:3b00827bb0b7 158 sc->sc_pd = pd;
AdamGreen 0:3b00827bb0b7 159 sc->sc_linkStatusCB = linkStatusCB;
AdamGreen 0:3b00827bb0b7 160 sc->sc_ethif = ethif;
AdamGreen 0:3b00827bb0b7 161
AdamGreen 0:3b00827bb0b7 162 /* put the new interface at the head of the list */
AdamGreen 0:3b00827bb0b7 163 sc->next = pppoe_softc_list;
AdamGreen 0:3b00827bb0b7 164 pppoe_softc_list = sc;
AdamGreen 0:3b00827bb0b7 165
AdamGreen 0:3b00827bb0b7 166 *scptr = sc;
AdamGreen 0:3b00827bb0b7 167
AdamGreen 0:3b00827bb0b7 168 return ERR_OK;
AdamGreen 0:3b00827bb0b7 169 }
AdamGreen 0:3b00827bb0b7 170
AdamGreen 0:3b00827bb0b7 171 err_t
AdamGreen 0:3b00827bb0b7 172 pppoe_destroy(struct netif *ifp)
AdamGreen 0:3b00827bb0b7 173 {
AdamGreen 0:3b00827bb0b7 174 struct pppoe_softc *sc, *prev = NULL;
AdamGreen 0:3b00827bb0b7 175
AdamGreen 0:3b00827bb0b7 176 for (sc = pppoe_softc_list; sc != NULL; prev = sc, sc = sc->next) {
AdamGreen 0:3b00827bb0b7 177 if (sc->sc_ethif == ifp) {
AdamGreen 0:3b00827bb0b7 178 break;
AdamGreen 0:3b00827bb0b7 179 }
AdamGreen 0:3b00827bb0b7 180 }
AdamGreen 0:3b00827bb0b7 181
AdamGreen 0:3b00827bb0b7 182 if(!(sc && (sc->sc_ethif == ifp))) {
AdamGreen 0:3b00827bb0b7 183 return ERR_IF;
AdamGreen 0:3b00827bb0b7 184 }
AdamGreen 0:3b00827bb0b7 185
AdamGreen 0:3b00827bb0b7 186 sys_untimeout(pppoe_timeout, sc);
AdamGreen 0:3b00827bb0b7 187 if (prev == NULL) {
AdamGreen 0:3b00827bb0b7 188 /* remove sc from the head of the list */
AdamGreen 0:3b00827bb0b7 189 pppoe_softc_list = sc->next;
AdamGreen 0:3b00827bb0b7 190 } else {
AdamGreen 0:3b00827bb0b7 191 /* remove sc from the list */
AdamGreen 0:3b00827bb0b7 192 prev->next = sc->next;
AdamGreen 0:3b00827bb0b7 193 }
AdamGreen 0:3b00827bb0b7 194
AdamGreen 0:3b00827bb0b7 195 #ifdef PPPOE_TODO
AdamGreen 0:3b00827bb0b7 196 if (sc->sc_concentrator_name) {
AdamGreen 0:3b00827bb0b7 197 mem_free(sc->sc_concentrator_name);
AdamGreen 0:3b00827bb0b7 198 }
AdamGreen 0:3b00827bb0b7 199 if (sc->sc_service_name) {
AdamGreen 0:3b00827bb0b7 200 mem_free(sc->sc_service_name);
AdamGreen 0:3b00827bb0b7 201 }
AdamGreen 0:3b00827bb0b7 202 #endif /* PPPOE_TODO */
AdamGreen 0:3b00827bb0b7 203 memp_free(MEMP_PPPOE_IF, sc);
AdamGreen 0:3b00827bb0b7 204
AdamGreen 0:3b00827bb0b7 205 return ERR_OK;
AdamGreen 0:3b00827bb0b7 206 }
AdamGreen 0:3b00827bb0b7 207
AdamGreen 0:3b00827bb0b7 208 /*
AdamGreen 0:3b00827bb0b7 209 * Find the interface handling the specified session.
AdamGreen 0:3b00827bb0b7 210 * Note: O(number of sessions open), this is a client-side only, mean
AdamGreen 0:3b00827bb0b7 211 * and lean implementation, so number of open sessions typically should
AdamGreen 0:3b00827bb0b7 212 * be 1.
AdamGreen 0:3b00827bb0b7 213 */
AdamGreen 0:3b00827bb0b7 214 static struct pppoe_softc *
AdamGreen 0:3b00827bb0b7 215 pppoe_find_softc_by_session(u_int session, struct netif *rcvif)
AdamGreen 0:3b00827bb0b7 216 {
AdamGreen 0:3b00827bb0b7 217 struct pppoe_softc *sc;
AdamGreen 0:3b00827bb0b7 218
AdamGreen 0:3b00827bb0b7 219 if (session == 0) {
AdamGreen 0:3b00827bb0b7 220 return NULL;
AdamGreen 0:3b00827bb0b7 221 }
AdamGreen 0:3b00827bb0b7 222
AdamGreen 0:3b00827bb0b7 223 for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
AdamGreen 0:3b00827bb0b7 224 if (sc->sc_state == PPPOE_STATE_SESSION
AdamGreen 0:3b00827bb0b7 225 && sc->sc_session == session) {
AdamGreen 0:3b00827bb0b7 226 if (sc->sc_ethif == rcvif) {
AdamGreen 0:3b00827bb0b7 227 return sc;
AdamGreen 0:3b00827bb0b7 228 } else {
AdamGreen 0:3b00827bb0b7 229 return NULL;
AdamGreen 0:3b00827bb0b7 230 }
AdamGreen 0:3b00827bb0b7 231 }
AdamGreen 0:3b00827bb0b7 232 }
AdamGreen 0:3b00827bb0b7 233 return NULL;
AdamGreen 0:3b00827bb0b7 234 }
AdamGreen 0:3b00827bb0b7 235
AdamGreen 0:3b00827bb0b7 236 /* Check host unique token passed and return appropriate softc pointer,
AdamGreen 0:3b00827bb0b7 237 * or NULL if token is bogus. */
AdamGreen 0:3b00827bb0b7 238 static struct pppoe_softc *
AdamGreen 0:3b00827bb0b7 239 pppoe_find_softc_by_hunique(u8_t *token, size_t len, struct netif *rcvif)
AdamGreen 0:3b00827bb0b7 240 {
AdamGreen 0:3b00827bb0b7 241 struct pppoe_softc *sc, *t;
AdamGreen 0:3b00827bb0b7 242
AdamGreen 0:3b00827bb0b7 243 if (pppoe_softc_list == NULL) {
AdamGreen 0:3b00827bb0b7 244 return NULL;
AdamGreen 0:3b00827bb0b7 245 }
AdamGreen 0:3b00827bb0b7 246
AdamGreen 0:3b00827bb0b7 247 if (len != sizeof sc) {
AdamGreen 0:3b00827bb0b7 248 return NULL;
AdamGreen 0:3b00827bb0b7 249 }
AdamGreen 0:3b00827bb0b7 250 MEMCPY(&t, token, len);
AdamGreen 0:3b00827bb0b7 251
AdamGreen 0:3b00827bb0b7 252 for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
AdamGreen 0:3b00827bb0b7 253 if (sc == t) {
AdamGreen 0:3b00827bb0b7 254 break;
AdamGreen 0:3b00827bb0b7 255 }
AdamGreen 0:3b00827bb0b7 256 }
AdamGreen 0:3b00827bb0b7 257
AdamGreen 0:3b00827bb0b7 258 if (sc == NULL) {
AdamGreen 0:3b00827bb0b7 259 PPPDEBUG(LOG_DEBUG, ("pppoe: alien host unique tag, no session found\n"));
AdamGreen 0:3b00827bb0b7 260 return NULL;
AdamGreen 0:3b00827bb0b7 261 }
AdamGreen 0:3b00827bb0b7 262
AdamGreen 0:3b00827bb0b7 263 /* should be safe to access *sc now */
AdamGreen 0:3b00827bb0b7 264 if (sc->sc_state < PPPOE_STATE_PADI_SENT || sc->sc_state >= PPPOE_STATE_SESSION) {
AdamGreen 0:3b00827bb0b7 265 printf("%c%c%"U16_F": host unique tag found, but it belongs to a connection in state %d\n",
AdamGreen 0:3b00827bb0b7 266 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, sc->sc_state);
AdamGreen 0:3b00827bb0b7 267 return NULL;
AdamGreen 0:3b00827bb0b7 268 }
AdamGreen 0:3b00827bb0b7 269 if (sc->sc_ethif != rcvif) {
AdamGreen 0:3b00827bb0b7 270 printf("%c%c%"U16_F": wrong interface, not accepting host unique\n",
AdamGreen 0:3b00827bb0b7 271 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
AdamGreen 0:3b00827bb0b7 272 return NULL;
AdamGreen 0:3b00827bb0b7 273 }
AdamGreen 0:3b00827bb0b7 274 return sc;
AdamGreen 0:3b00827bb0b7 275 }
AdamGreen 0:3b00827bb0b7 276
AdamGreen 0:3b00827bb0b7 277 static void
AdamGreen 0:3b00827bb0b7 278 pppoe_linkstatus_up(struct pppoe_softc *sc)
AdamGreen 0:3b00827bb0b7 279 {
AdamGreen 0:3b00827bb0b7 280 sc->sc_linkStatusCB(sc->sc_pd, 1);
AdamGreen 0:3b00827bb0b7 281 }
AdamGreen 0:3b00827bb0b7 282
AdamGreen 0:3b00827bb0b7 283 /* analyze and handle a single received packet while not in session state */
AdamGreen 0:3b00827bb0b7 284 static void
AdamGreen 0:3b00827bb0b7 285 pppoe_dispatch_disc_pkt(struct netif *netif, struct pbuf *pb)
AdamGreen 0:3b00827bb0b7 286 {
AdamGreen 0:3b00827bb0b7 287 u16_t tag, len;
AdamGreen 0:3b00827bb0b7 288 u16_t session, plen;
AdamGreen 0:3b00827bb0b7 289 struct pppoe_softc *sc;
AdamGreen 0:3b00827bb0b7 290 const char *err_msg;
AdamGreen 0:3b00827bb0b7 291 char devname[6];
AdamGreen 0:3b00827bb0b7 292 u8_t *ac_cookie;
AdamGreen 0:3b00827bb0b7 293 u16_t ac_cookie_len;
AdamGreen 0:3b00827bb0b7 294 #ifdef PPPOE_SERVER
AdamGreen 0:3b00827bb0b7 295 u8_t *hunique;
AdamGreen 0:3b00827bb0b7 296 size_t hunique_len;
AdamGreen 0:3b00827bb0b7 297 #endif
AdamGreen 0:3b00827bb0b7 298 struct pppoehdr *ph;
AdamGreen 0:3b00827bb0b7 299 struct pppoetag pt;
AdamGreen 0:3b00827bb0b7 300 int off, err, errortag;
AdamGreen 0:3b00827bb0b7 301 struct eth_hdr *ethhdr;
AdamGreen 0:3b00827bb0b7 302
AdamGreen 0:3b00827bb0b7 303 pb = pppSingleBuf(pb);
AdamGreen 0:3b00827bb0b7 304
AdamGreen 0:3b00827bb0b7 305 strcpy(devname, "pppoe"); /* as long as we don't know which instance */
AdamGreen 0:3b00827bb0b7 306 err_msg = NULL;
AdamGreen 0:3b00827bb0b7 307 errortag = 0;
AdamGreen 0:3b00827bb0b7 308 if (pb->len < sizeof(*ethhdr)) {
AdamGreen 0:3b00827bb0b7 309 goto done;
AdamGreen 0:3b00827bb0b7 310 }
AdamGreen 0:3b00827bb0b7 311 ethhdr = (struct eth_hdr *)pb->payload;
AdamGreen 0:3b00827bb0b7 312 off = sizeof(*ethhdr);
AdamGreen 0:3b00827bb0b7 313
AdamGreen 0:3b00827bb0b7 314 ac_cookie = NULL;
AdamGreen 0:3b00827bb0b7 315 ac_cookie_len = 0;
AdamGreen 0:3b00827bb0b7 316 #ifdef PPPOE_SERVER
AdamGreen 0:3b00827bb0b7 317 hunique = NULL;
AdamGreen 0:3b00827bb0b7 318 hunique_len = 0;
AdamGreen 0:3b00827bb0b7 319 #endif
AdamGreen 0:3b00827bb0b7 320 session = 0;
AdamGreen 0:3b00827bb0b7 321 if (pb->len - off < PPPOE_HEADERLEN) {
AdamGreen 0:3b00827bb0b7 322 printf("pppoe: packet too short: %d\n", pb->len);
AdamGreen 0:3b00827bb0b7 323 goto done;
AdamGreen 0:3b00827bb0b7 324 }
AdamGreen 0:3b00827bb0b7 325
AdamGreen 0:3b00827bb0b7 326 ph = (struct pppoehdr *) (ethhdr + 1);
AdamGreen 0:3b00827bb0b7 327 if (ph->vertype != PPPOE_VERTYPE) {
AdamGreen 0:3b00827bb0b7 328 printf("pppoe: unknown version/type packet: 0x%x\n", ph->vertype);
AdamGreen 0:3b00827bb0b7 329 goto done;
AdamGreen 0:3b00827bb0b7 330 }
AdamGreen 0:3b00827bb0b7 331 session = ntohs(ph->session);
AdamGreen 0:3b00827bb0b7 332 plen = ntohs(ph->plen);
AdamGreen 0:3b00827bb0b7 333 off += sizeof(*ph);
AdamGreen 0:3b00827bb0b7 334
AdamGreen 0:3b00827bb0b7 335 if (plen + off > pb->len) {
AdamGreen 0:3b00827bb0b7 336 printf("pppoe: packet content does not fit: data available = %d, packet size = %u\n",
AdamGreen 0:3b00827bb0b7 337 pb->len - off, plen);
AdamGreen 0:3b00827bb0b7 338 goto done;
AdamGreen 0:3b00827bb0b7 339 }
AdamGreen 0:3b00827bb0b7 340 if(pb->tot_len == pb->len) {
AdamGreen 0:3b00827bb0b7 341 pb->tot_len = pb->len = (u16_t)off + plen; /* ignore trailing garbage */
AdamGreen 0:3b00827bb0b7 342 }
AdamGreen 0:3b00827bb0b7 343 tag = 0;
AdamGreen 0:3b00827bb0b7 344 len = 0;
AdamGreen 0:3b00827bb0b7 345 sc = NULL;
AdamGreen 0:3b00827bb0b7 346 while (off + sizeof(pt) <= pb->len) {
AdamGreen 0:3b00827bb0b7 347 MEMCPY(&pt, (u8_t*)pb->payload + off, sizeof(pt));
AdamGreen 0:3b00827bb0b7 348 tag = ntohs(pt.tag);
AdamGreen 0:3b00827bb0b7 349 len = ntohs(pt.len);
AdamGreen 0:3b00827bb0b7 350 if (off + sizeof(pt) + len > pb->len) {
AdamGreen 0:3b00827bb0b7 351 printf("pppoe: tag 0x%x len 0x%x is too long\n", tag, len);
AdamGreen 0:3b00827bb0b7 352 goto done;
AdamGreen 0:3b00827bb0b7 353 }
AdamGreen 0:3b00827bb0b7 354 switch (tag) {
AdamGreen 0:3b00827bb0b7 355 case PPPOE_TAG_EOL:
AdamGreen 0:3b00827bb0b7 356 goto breakbreak;
AdamGreen 0:3b00827bb0b7 357 case PPPOE_TAG_SNAME:
AdamGreen 0:3b00827bb0b7 358 break; /* ignored */
AdamGreen 0:3b00827bb0b7 359 case PPPOE_TAG_ACNAME:
AdamGreen 0:3b00827bb0b7 360 break; /* ignored */
AdamGreen 0:3b00827bb0b7 361 case PPPOE_TAG_HUNIQUE:
AdamGreen 0:3b00827bb0b7 362 if (sc != NULL) {
AdamGreen 0:3b00827bb0b7 363 break;
AdamGreen 0:3b00827bb0b7 364 }
AdamGreen 0:3b00827bb0b7 365 #ifdef PPPOE_SERVER
AdamGreen 0:3b00827bb0b7 366 hunique = (u8_t*)pb->payload + off + sizeof(pt);
AdamGreen 0:3b00827bb0b7 367 hunique_len = len;
AdamGreen 0:3b00827bb0b7 368 #endif
AdamGreen 0:3b00827bb0b7 369 sc = pppoe_find_softc_by_hunique((u8_t*)pb->payload + off + sizeof(pt), len, netif);
AdamGreen 0:3b00827bb0b7 370 if (sc != NULL) {
AdamGreen 0:3b00827bb0b7 371 snprintf(devname, sizeof(devname), "%c%c%"U16_F, sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
AdamGreen 0:3b00827bb0b7 372 }
AdamGreen 0:3b00827bb0b7 373 break;
AdamGreen 0:3b00827bb0b7 374 case PPPOE_TAG_ACCOOKIE:
AdamGreen 0:3b00827bb0b7 375 if (ac_cookie == NULL) {
AdamGreen 0:3b00827bb0b7 376 ac_cookie = (u8_t*)pb->payload + off + sizeof(pt);
AdamGreen 0:3b00827bb0b7 377 ac_cookie_len = len;
AdamGreen 0:3b00827bb0b7 378 }
AdamGreen 0:3b00827bb0b7 379 break;
AdamGreen 0:3b00827bb0b7 380 case PPPOE_TAG_SNAME_ERR:
AdamGreen 0:3b00827bb0b7 381 err_msg = "SERVICE NAME ERROR";
AdamGreen 0:3b00827bb0b7 382 errortag = 1;
AdamGreen 0:3b00827bb0b7 383 break;
AdamGreen 0:3b00827bb0b7 384 case PPPOE_TAG_ACSYS_ERR:
AdamGreen 0:3b00827bb0b7 385 err_msg = "AC SYSTEM ERROR";
AdamGreen 0:3b00827bb0b7 386 errortag = 1;
AdamGreen 0:3b00827bb0b7 387 break;
AdamGreen 0:3b00827bb0b7 388 case PPPOE_TAG_GENERIC_ERR:
AdamGreen 0:3b00827bb0b7 389 err_msg = "GENERIC ERROR";
AdamGreen 0:3b00827bb0b7 390 errortag = 1;
AdamGreen 0:3b00827bb0b7 391 break;
AdamGreen 0:3b00827bb0b7 392 }
AdamGreen 0:3b00827bb0b7 393 if (err_msg) {
AdamGreen 0:3b00827bb0b7 394 if (errortag && len) {
AdamGreen 0:3b00827bb0b7 395 u16_t error_len = LWIP_MIN(len, sizeof(pppoe_error_tmp)-1);
AdamGreen 0:3b00827bb0b7 396 strncpy(pppoe_error_tmp, (char*)pb->payload + off + sizeof(pt), error_len);
AdamGreen 0:3b00827bb0b7 397 pppoe_error_tmp[error_len-1] = '\0';
AdamGreen 0:3b00827bb0b7 398 printf("%s: %s: %s\n", devname, err_msg, pppoe_error_tmp);
AdamGreen 0:3b00827bb0b7 399 } else {
AdamGreen 0:3b00827bb0b7 400 printf("%s: %s\n", devname, err_msg);
AdamGreen 0:3b00827bb0b7 401 }
AdamGreen 0:3b00827bb0b7 402 if (errortag) {
AdamGreen 0:3b00827bb0b7 403 goto done;
AdamGreen 0:3b00827bb0b7 404 }
AdamGreen 0:3b00827bb0b7 405 }
AdamGreen 0:3b00827bb0b7 406 off += sizeof(pt) + len;
AdamGreen 0:3b00827bb0b7 407 }
AdamGreen 0:3b00827bb0b7 408
AdamGreen 0:3b00827bb0b7 409 breakbreak:;
AdamGreen 0:3b00827bb0b7 410 switch (ph->code) {
AdamGreen 0:3b00827bb0b7 411 case PPPOE_CODE_PADI:
AdamGreen 0:3b00827bb0b7 412 #ifdef PPPOE_SERVER
AdamGreen 0:3b00827bb0b7 413 /*
AdamGreen 0:3b00827bb0b7 414 * got service name, concentrator name, and/or host unique.
AdamGreen 0:3b00827bb0b7 415 * ignore if we have no interfaces with IFF_PASSIVE|IFF_UP.
AdamGreen 0:3b00827bb0b7 416 */
AdamGreen 0:3b00827bb0b7 417 if (LIST_EMPTY(&pppoe_softc_list)) {
AdamGreen 0:3b00827bb0b7 418 goto done;
AdamGreen 0:3b00827bb0b7 419 }
AdamGreen 0:3b00827bb0b7 420 LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
AdamGreen 0:3b00827bb0b7 421 if (!(sc->sc_sppp.pp_if.if_flags & IFF_UP)) {
AdamGreen 0:3b00827bb0b7 422 continue;
AdamGreen 0:3b00827bb0b7 423 }
AdamGreen 0:3b00827bb0b7 424 if (!(sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
AdamGreen 0:3b00827bb0b7 425 continue;
AdamGreen 0:3b00827bb0b7 426 }
AdamGreen 0:3b00827bb0b7 427 if (sc->sc_state == PPPOE_STATE_INITIAL) {
AdamGreen 0:3b00827bb0b7 428 break;
AdamGreen 0:3b00827bb0b7 429 }
AdamGreen 0:3b00827bb0b7 430 }
AdamGreen 0:3b00827bb0b7 431 if (sc == NULL) {
AdamGreen 0:3b00827bb0b7 432 /* printf("pppoe: free passive interface is not found\n"); */
AdamGreen 0:3b00827bb0b7 433 goto done;
AdamGreen 0:3b00827bb0b7 434 }
AdamGreen 0:3b00827bb0b7 435 if (hunique) {
AdamGreen 0:3b00827bb0b7 436 if (sc->sc_hunique) {
AdamGreen 0:3b00827bb0b7 437 mem_free(sc->sc_hunique);
AdamGreen 0:3b00827bb0b7 438 }
AdamGreen 0:3b00827bb0b7 439 sc->sc_hunique = mem_malloc(hunique_len);
AdamGreen 0:3b00827bb0b7 440 if (sc->sc_hunique == NULL) {
AdamGreen 0:3b00827bb0b7 441 goto done;
AdamGreen 0:3b00827bb0b7 442 }
AdamGreen 0:3b00827bb0b7 443 sc->sc_hunique_len = hunique_len;
AdamGreen 0:3b00827bb0b7 444 MEMCPY(sc->sc_hunique, hunique, hunique_len);
AdamGreen 0:3b00827bb0b7 445 }
AdamGreen 0:3b00827bb0b7 446 MEMCPY(&sc->sc_dest, eh->ether_shost, sizeof sc->sc_dest);
AdamGreen 0:3b00827bb0b7 447 sc->sc_state = PPPOE_STATE_PADO_SENT;
AdamGreen 0:3b00827bb0b7 448 pppoe_send_pado(sc);
AdamGreen 0:3b00827bb0b7 449 break;
AdamGreen 0:3b00827bb0b7 450 #endif /* PPPOE_SERVER */
AdamGreen 0:3b00827bb0b7 451 case PPPOE_CODE_PADR:
AdamGreen 0:3b00827bb0b7 452 #ifdef PPPOE_SERVER
AdamGreen 0:3b00827bb0b7 453 /*
AdamGreen 0:3b00827bb0b7 454 * get sc from ac_cookie if IFF_PASSIVE
AdamGreen 0:3b00827bb0b7 455 */
AdamGreen 0:3b00827bb0b7 456 if (ac_cookie == NULL) {
AdamGreen 0:3b00827bb0b7 457 /* be quiet if there is not a single pppoe instance */
AdamGreen 0:3b00827bb0b7 458 printf("pppoe: received PADR but not includes ac_cookie\n");
AdamGreen 0:3b00827bb0b7 459 goto done;
AdamGreen 0:3b00827bb0b7 460 }
AdamGreen 0:3b00827bb0b7 461 sc = pppoe_find_softc_by_hunique(ac_cookie, ac_cookie_len, netif);
AdamGreen 0:3b00827bb0b7 462 if (sc == NULL) {
AdamGreen 0:3b00827bb0b7 463 /* be quiet if there is not a single pppoe instance */
AdamGreen 0:3b00827bb0b7 464 if (!LIST_EMPTY(&pppoe_softc_list)) {
AdamGreen 0:3b00827bb0b7 465 printf("pppoe: received PADR but could not find request for it\n");
AdamGreen 0:3b00827bb0b7 466 }
AdamGreen 0:3b00827bb0b7 467 goto done;
AdamGreen 0:3b00827bb0b7 468 }
AdamGreen 0:3b00827bb0b7 469 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
AdamGreen 0:3b00827bb0b7 470 printf("%c%c%"U16_F": received unexpected PADR\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
AdamGreen 0:3b00827bb0b7 471 goto done;
AdamGreen 0:3b00827bb0b7 472 }
AdamGreen 0:3b00827bb0b7 473 if (hunique) {
AdamGreen 0:3b00827bb0b7 474 if (sc->sc_hunique) {
AdamGreen 0:3b00827bb0b7 475 mem_free(sc->sc_hunique);
AdamGreen 0:3b00827bb0b7 476 }
AdamGreen 0:3b00827bb0b7 477 sc->sc_hunique = mem_malloc(hunique_len);
AdamGreen 0:3b00827bb0b7 478 if (sc->sc_hunique == NULL) {
AdamGreen 0:3b00827bb0b7 479 goto done;
AdamGreen 0:3b00827bb0b7 480 }
AdamGreen 0:3b00827bb0b7 481 sc->sc_hunique_len = hunique_len;
AdamGreen 0:3b00827bb0b7 482 MEMCPY(sc->sc_hunique, hunique, hunique_len);
AdamGreen 0:3b00827bb0b7 483 }
AdamGreen 0:3b00827bb0b7 484 pppoe_send_pads(sc);
AdamGreen 0:3b00827bb0b7 485 sc->sc_state = PPPOE_STATE_SESSION;
AdamGreen 0:3b00827bb0b7 486 pppoe_linkstatus_up(sc); /* notify upper layers */
AdamGreen 0:3b00827bb0b7 487 break;
AdamGreen 0:3b00827bb0b7 488 #else
AdamGreen 0:3b00827bb0b7 489 /* ignore, we are no access concentrator */
AdamGreen 0:3b00827bb0b7 490 goto done;
AdamGreen 0:3b00827bb0b7 491 #endif /* PPPOE_SERVER */
AdamGreen 0:3b00827bb0b7 492 case PPPOE_CODE_PADO:
AdamGreen 0:3b00827bb0b7 493 if (sc == NULL) {
AdamGreen 0:3b00827bb0b7 494 /* be quiet if there is not a single pppoe instance */
AdamGreen 0:3b00827bb0b7 495 if (pppoe_softc_list != NULL) {
AdamGreen 0:3b00827bb0b7 496 printf("pppoe: received PADO but could not find request for it\n");
AdamGreen 0:3b00827bb0b7 497 }
AdamGreen 0:3b00827bb0b7 498 goto done;
AdamGreen 0:3b00827bb0b7 499 }
AdamGreen 0:3b00827bb0b7 500 if (sc->sc_state != PPPOE_STATE_PADI_SENT) {
AdamGreen 0:3b00827bb0b7 501 printf("%c%c%"U16_F": received unexpected PADO\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
AdamGreen 0:3b00827bb0b7 502 goto done;
AdamGreen 0:3b00827bb0b7 503 }
AdamGreen 0:3b00827bb0b7 504 if (ac_cookie) {
AdamGreen 0:3b00827bb0b7 505 sc->sc_ac_cookie_len = ac_cookie_len;
AdamGreen 0:3b00827bb0b7 506 MEMCPY(sc->sc_ac_cookie, ac_cookie, ac_cookie_len);
AdamGreen 0:3b00827bb0b7 507 }
AdamGreen 0:3b00827bb0b7 508 MEMCPY(&sc->sc_dest, ethhdr->src.addr, sizeof(sc->sc_dest.addr));
AdamGreen 0:3b00827bb0b7 509 sys_untimeout(pppoe_timeout, sc);
AdamGreen 0:3b00827bb0b7 510 sc->sc_padr_retried = 0;
AdamGreen 0:3b00827bb0b7 511 sc->sc_state = PPPOE_STATE_PADR_SENT;
AdamGreen 0:3b00827bb0b7 512 if ((err = pppoe_send_padr(sc)) != 0) {
AdamGreen 0:3b00827bb0b7 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));
AdamGreen 0:3b00827bb0b7 514 }
AdamGreen 0:3b00827bb0b7 515 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
AdamGreen 0:3b00827bb0b7 516 break;
AdamGreen 0:3b00827bb0b7 517 case PPPOE_CODE_PADS:
AdamGreen 0:3b00827bb0b7 518 if (sc == NULL) {
AdamGreen 0:3b00827bb0b7 519 goto done;
AdamGreen 0:3b00827bb0b7 520 }
AdamGreen 0:3b00827bb0b7 521 sc->sc_session = session;
AdamGreen 0:3b00827bb0b7 522 sys_untimeout(pppoe_timeout, sc);
AdamGreen 0:3b00827bb0b7 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));
AdamGreen 0:3b00827bb0b7 524 sc->sc_state = PPPOE_STATE_SESSION;
AdamGreen 0:3b00827bb0b7 525 pppoe_linkstatus_up(sc); /* notify upper layers */
AdamGreen 0:3b00827bb0b7 526 break;
AdamGreen 0:3b00827bb0b7 527 case PPPOE_CODE_PADT:
AdamGreen 0:3b00827bb0b7 528 if (sc == NULL) {
AdamGreen 0:3b00827bb0b7 529 goto done;
AdamGreen 0:3b00827bb0b7 530 }
AdamGreen 0:3b00827bb0b7 531 pppoe_clear_softc(sc, "received PADT");
AdamGreen 0:3b00827bb0b7 532 break;
AdamGreen 0:3b00827bb0b7 533 default:
AdamGreen 0:3b00827bb0b7 534 if(sc) {
AdamGreen 0:3b00827bb0b7 535 printf("%c%c%"U16_F": unknown code (0x%"X16_F") session = 0x%"X16_F"\n",
AdamGreen 0:3b00827bb0b7 536 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
AdamGreen 0:3b00827bb0b7 537 (u16_t)ph->code, session);
AdamGreen 0:3b00827bb0b7 538 } else {
AdamGreen 0:3b00827bb0b7 539 printf("pppoe: unknown code (0x%"X16_F") session = 0x%"X16_F"\n", (u16_t)ph->code, session);
AdamGreen 0:3b00827bb0b7 540 }
AdamGreen 0:3b00827bb0b7 541 break;
AdamGreen 0:3b00827bb0b7 542 }
AdamGreen 0:3b00827bb0b7 543
AdamGreen 0:3b00827bb0b7 544 done:
AdamGreen 0:3b00827bb0b7 545 pbuf_free(pb);
AdamGreen 0:3b00827bb0b7 546 return;
AdamGreen 0:3b00827bb0b7 547 }
AdamGreen 0:3b00827bb0b7 548
AdamGreen 0:3b00827bb0b7 549 void
AdamGreen 0:3b00827bb0b7 550 pppoe_disc_input(struct netif *netif, struct pbuf *p)
AdamGreen 0:3b00827bb0b7 551 {
AdamGreen 0:3b00827bb0b7 552 /* avoid error messages if there is not a single pppoe instance */
AdamGreen 0:3b00827bb0b7 553 if (pppoe_softc_list != NULL) {
AdamGreen 0:3b00827bb0b7 554 pppoe_dispatch_disc_pkt(netif, p);
AdamGreen 0:3b00827bb0b7 555 } else {
AdamGreen 0:3b00827bb0b7 556 pbuf_free(p);
AdamGreen 0:3b00827bb0b7 557 }
AdamGreen 0:3b00827bb0b7 558 }
AdamGreen 0:3b00827bb0b7 559
AdamGreen 0:3b00827bb0b7 560 void
AdamGreen 0:3b00827bb0b7 561 pppoe_data_input(struct netif *netif, struct pbuf *pb)
AdamGreen 0:3b00827bb0b7 562 {
AdamGreen 0:3b00827bb0b7 563 u16_t session, plen;
AdamGreen 0:3b00827bb0b7 564 struct pppoe_softc *sc;
AdamGreen 0:3b00827bb0b7 565 struct pppoehdr *ph;
AdamGreen 0:3b00827bb0b7 566 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
AdamGreen 0:3b00827bb0b7 567 u8_t shost[ETHER_ADDR_LEN];
AdamGreen 0:3b00827bb0b7 568 #endif
AdamGreen 0:3b00827bb0b7 569
AdamGreen 0:3b00827bb0b7 570 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
AdamGreen 0:3b00827bb0b7 571 MEMCPY(shost, ((struct eth_hdr *)pb->payload)->src.addr, sizeof(shost));
AdamGreen 0:3b00827bb0b7 572 #endif
AdamGreen 0:3b00827bb0b7 573 if (pbuf_header(pb, -(int)sizeof(struct eth_hdr)) != 0) {
AdamGreen 0:3b00827bb0b7 574 /* bail out */
AdamGreen 0:3b00827bb0b7 575 PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header failed\n"));
AdamGreen 0:3b00827bb0b7 576 LINK_STATS_INC(link.lenerr);
AdamGreen 0:3b00827bb0b7 577 goto drop;
AdamGreen 0:3b00827bb0b7 578 }
AdamGreen 0:3b00827bb0b7 579
AdamGreen 0:3b00827bb0b7 580 pb = pppSingleBuf (pb);
AdamGreen 0:3b00827bb0b7 581
AdamGreen 0:3b00827bb0b7 582 if (pb->len <= PPPOE_HEADERLEN) {
AdamGreen 0:3b00827bb0b7 583 printf("pppoe (data): dropping too short packet: %d bytes\n", pb->len);
AdamGreen 0:3b00827bb0b7 584 goto drop;
AdamGreen 0:3b00827bb0b7 585 }
AdamGreen 0:3b00827bb0b7 586
AdamGreen 0:3b00827bb0b7 587 if (pb->len < sizeof(*ph)) {
AdamGreen 0:3b00827bb0b7 588 printf("pppoe_data_input: could not get PPPoE header\n");
AdamGreen 0:3b00827bb0b7 589 goto drop;
AdamGreen 0:3b00827bb0b7 590 }
AdamGreen 0:3b00827bb0b7 591 ph = (struct pppoehdr *)pb->payload;
AdamGreen 0:3b00827bb0b7 592
AdamGreen 0:3b00827bb0b7 593 if (ph->vertype != PPPOE_VERTYPE) {
AdamGreen 0:3b00827bb0b7 594 printf("pppoe (data): unknown version/type packet: 0x%x\n", ph->vertype);
AdamGreen 0:3b00827bb0b7 595 goto drop;
AdamGreen 0:3b00827bb0b7 596 }
AdamGreen 0:3b00827bb0b7 597 if (ph->code != 0) {
AdamGreen 0:3b00827bb0b7 598 goto drop;
AdamGreen 0:3b00827bb0b7 599 }
AdamGreen 0:3b00827bb0b7 600
AdamGreen 0:3b00827bb0b7 601 session = ntohs(ph->session);
AdamGreen 0:3b00827bb0b7 602 sc = pppoe_find_softc_by_session(session, netif);
AdamGreen 0:3b00827bb0b7 603 if (sc == NULL) {
AdamGreen 0:3b00827bb0b7 604 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
AdamGreen 0:3b00827bb0b7 605 printf("pppoe: input for unknown session 0x%x, sending PADT\n", session);
AdamGreen 0:3b00827bb0b7 606 pppoe_send_padt(netif, session, shost);
AdamGreen 0:3b00827bb0b7 607 #endif
AdamGreen 0:3b00827bb0b7 608 goto drop;
AdamGreen 0:3b00827bb0b7 609 }
AdamGreen 0:3b00827bb0b7 610
AdamGreen 0:3b00827bb0b7 611 plen = ntohs(ph->plen);
AdamGreen 0:3b00827bb0b7 612
AdamGreen 0:3b00827bb0b7 613 if (pbuf_header(pb, -(int)(PPPOE_HEADERLEN)) != 0) {
AdamGreen 0:3b00827bb0b7 614 /* bail out */
AdamGreen 0:3b00827bb0b7 615 PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header PPPOE_HEADERLEN failed\n"));
AdamGreen 0:3b00827bb0b7 616 LINK_STATS_INC(link.lenerr);
AdamGreen 0:3b00827bb0b7 617 goto drop;
AdamGreen 0:3b00827bb0b7 618 }
AdamGreen 0:3b00827bb0b7 619
AdamGreen 0:3b00827bb0b7 620 PPPDEBUG(LOG_DEBUG, ("pppoe_data_input: %c%c%"U16_F": pkthdr.len=%d, pppoe.len=%d\n",
AdamGreen 0:3b00827bb0b7 621 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
AdamGreen 0:3b00827bb0b7 622 pb->len, plen));
AdamGreen 0:3b00827bb0b7 623
AdamGreen 0:3b00827bb0b7 624 if (pb->len < plen) {
AdamGreen 0:3b00827bb0b7 625 goto drop;
AdamGreen 0:3b00827bb0b7 626 }
AdamGreen 0:3b00827bb0b7 627
AdamGreen 0:3b00827bb0b7 628 pppInProcOverEthernet(sc->sc_pd, pb);
AdamGreen 0:3b00827bb0b7 629
AdamGreen 0:3b00827bb0b7 630 return;
AdamGreen 0:3b00827bb0b7 631
AdamGreen 0:3b00827bb0b7 632 drop:
AdamGreen 0:3b00827bb0b7 633 pbuf_free(pb);
AdamGreen 0:3b00827bb0b7 634 }
AdamGreen 0:3b00827bb0b7 635
AdamGreen 0:3b00827bb0b7 636 static err_t
AdamGreen 0:3b00827bb0b7 637 pppoe_output(struct pppoe_softc *sc, struct pbuf *pb)
AdamGreen 0:3b00827bb0b7 638 {
AdamGreen 0:3b00827bb0b7 639 struct eth_hdr *ethhdr;
AdamGreen 0:3b00827bb0b7 640 u16_t etype;
AdamGreen 0:3b00827bb0b7 641 err_t res;
AdamGreen 0:3b00827bb0b7 642
AdamGreen 0:3b00827bb0b7 643 if (!sc->sc_ethif) {
AdamGreen 0:3b00827bb0b7 644 pbuf_free(pb);
AdamGreen 0:3b00827bb0b7 645 return ERR_IF;
AdamGreen 0:3b00827bb0b7 646 }
AdamGreen 0:3b00827bb0b7 647
AdamGreen 0:3b00827bb0b7 648 ethhdr = (struct eth_hdr *)pb->payload;
AdamGreen 0:3b00827bb0b7 649 etype = sc->sc_state == PPPOE_STATE_SESSION ? ETHTYPE_PPPOE : ETHTYPE_PPPOEDISC;
AdamGreen 0:3b00827bb0b7 650 ethhdr->type = htons(etype);
AdamGreen 0:3b00827bb0b7 651 MEMCPY(ethhdr->dest.addr, sc->sc_dest.addr, sizeof(ethhdr->dest.addr));
AdamGreen 0:3b00827bb0b7 652 MEMCPY(ethhdr->src.addr, ((struct eth_addr *)sc->sc_ethif->hwaddr)->addr, sizeof(ethhdr->src.addr));
AdamGreen 0:3b00827bb0b7 653
AdamGreen 0:3b00827bb0b7 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",
AdamGreen 0:3b00827bb0b7 655 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, etype,
AdamGreen 0:3b00827bb0b7 656 sc->sc_state, sc->sc_session,
AdamGreen 0:3b00827bb0b7 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],
AdamGreen 0:3b00827bb0b7 658 pb->tot_len));
AdamGreen 0:3b00827bb0b7 659
AdamGreen 0:3b00827bb0b7 660 res = sc->sc_ethif->linkoutput(sc->sc_ethif, pb);
AdamGreen 0:3b00827bb0b7 661
AdamGreen 0:3b00827bb0b7 662 pbuf_free(pb);
AdamGreen 0:3b00827bb0b7 663
AdamGreen 0:3b00827bb0b7 664 return res;
AdamGreen 0:3b00827bb0b7 665 }
AdamGreen 0:3b00827bb0b7 666
AdamGreen 0:3b00827bb0b7 667 static err_t
AdamGreen 0:3b00827bb0b7 668 pppoe_send_padi(struct pppoe_softc *sc)
AdamGreen 0:3b00827bb0b7 669 {
AdamGreen 0:3b00827bb0b7 670 struct pbuf *pb;
AdamGreen 0:3b00827bb0b7 671 u8_t *p;
AdamGreen 0:3b00827bb0b7 672 int len;
AdamGreen 0:3b00827bb0b7 673 #ifdef PPPOE_TODO
AdamGreen 0:3b00827bb0b7 674 int l1 = 0, l2 = 0; /* XXX: gcc */
AdamGreen 0:3b00827bb0b7 675 #endif /* PPPOE_TODO */
AdamGreen 0:3b00827bb0b7 676
AdamGreen 0:3b00827bb0b7 677 if (sc->sc_state >PPPOE_STATE_PADI_SENT) {
AdamGreen 0:3b00827bb0b7 678 PPPDEBUG(LOG_ERR, ("ERROR: pppoe_send_padi in state %d", sc->sc_state));
AdamGreen 0:3b00827bb0b7 679 }
AdamGreen 0:3b00827bb0b7 680
AdamGreen 0:3b00827bb0b7 681 /* calculate length of frame (excluding ethernet header + pppoe header) */
AdamGreen 0:3b00827bb0b7 682 len = 2 + 2 + 2 + 2 + sizeof sc; /* service name tag is required, host unique is send too */
AdamGreen 0:3b00827bb0b7 683 #ifdef PPPOE_TODO
AdamGreen 0:3b00827bb0b7 684 if (sc->sc_service_name != NULL) {
AdamGreen 0:3b00827bb0b7 685 l1 = (int)strlen(sc->sc_service_name);
AdamGreen 0:3b00827bb0b7 686 len += l1;
AdamGreen 0:3b00827bb0b7 687 }
AdamGreen 0:3b00827bb0b7 688 if (sc->sc_concentrator_name != NULL) {
AdamGreen 0:3b00827bb0b7 689 l2 = (int)strlen(sc->sc_concentrator_name);
AdamGreen 0:3b00827bb0b7 690 len += 2 + 2 + l2;
AdamGreen 0:3b00827bb0b7 691 }
AdamGreen 0:3b00827bb0b7 692 #endif /* PPPOE_TODO */
AdamGreen 0:3b00827bb0b7 693 LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
AdamGreen 0:3b00827bb0b7 694 sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
AdamGreen 0:3b00827bb0b7 695
AdamGreen 0:3b00827bb0b7 696 /* allocate a buffer */
AdamGreen 0:3b00827bb0b7 697 pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
AdamGreen 0:3b00827bb0b7 698 if (!pb) {
AdamGreen 0:3b00827bb0b7 699 return ERR_MEM;
AdamGreen 0:3b00827bb0b7 700 }
AdamGreen 0:3b00827bb0b7 701 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
AdamGreen 0:3b00827bb0b7 702
AdamGreen 0:3b00827bb0b7 703 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
AdamGreen 0:3b00827bb0b7 704 /* fill in pkt */
AdamGreen 0:3b00827bb0b7 705 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADI, 0, (u16_t)len);
AdamGreen 0:3b00827bb0b7 706 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
AdamGreen 0:3b00827bb0b7 707 #ifdef PPPOE_TODO
AdamGreen 0:3b00827bb0b7 708 if (sc->sc_service_name != NULL) {
AdamGreen 0:3b00827bb0b7 709 PPPOE_ADD_16(p, l1);
AdamGreen 0:3b00827bb0b7 710 MEMCPY(p, sc->sc_service_name, l1);
AdamGreen 0:3b00827bb0b7 711 p += l1;
AdamGreen 0:3b00827bb0b7 712 } else
AdamGreen 0:3b00827bb0b7 713 #endif /* PPPOE_TODO */
AdamGreen 0:3b00827bb0b7 714 {
AdamGreen 0:3b00827bb0b7 715 PPPOE_ADD_16(p, 0);
AdamGreen 0:3b00827bb0b7 716 }
AdamGreen 0:3b00827bb0b7 717 #ifdef PPPOE_TODO
AdamGreen 0:3b00827bb0b7 718 if (sc->sc_concentrator_name != NULL) {
AdamGreen 0:3b00827bb0b7 719 PPPOE_ADD_16(p, PPPOE_TAG_ACNAME);
AdamGreen 0:3b00827bb0b7 720 PPPOE_ADD_16(p, l2);
AdamGreen 0:3b00827bb0b7 721 MEMCPY(p, sc->sc_concentrator_name, l2);
AdamGreen 0:3b00827bb0b7 722 p += l2;
AdamGreen 0:3b00827bb0b7 723 }
AdamGreen 0:3b00827bb0b7 724 #endif /* PPPOE_TODO */
AdamGreen 0:3b00827bb0b7 725 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
AdamGreen 0:3b00827bb0b7 726 PPPOE_ADD_16(p, sizeof(sc));
AdamGreen 0:3b00827bb0b7 727 MEMCPY(p, &sc, sizeof sc);
AdamGreen 0:3b00827bb0b7 728
AdamGreen 0:3b00827bb0b7 729 /* send pkt */
AdamGreen 0:3b00827bb0b7 730 return pppoe_output(sc, pb);
AdamGreen 0:3b00827bb0b7 731 }
AdamGreen 0:3b00827bb0b7 732
AdamGreen 0:3b00827bb0b7 733 static void
AdamGreen 0:3b00827bb0b7 734 pppoe_timeout(void *arg)
AdamGreen 0:3b00827bb0b7 735 {
AdamGreen 0:3b00827bb0b7 736 int retry_wait, err;
AdamGreen 0:3b00827bb0b7 737 struct pppoe_softc *sc = (struct pppoe_softc*)arg;
AdamGreen 0:3b00827bb0b7 738
AdamGreen 0:3b00827bb0b7 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));
AdamGreen 0:3b00827bb0b7 740
AdamGreen 0:3b00827bb0b7 741 switch (sc->sc_state) {
AdamGreen 0:3b00827bb0b7 742 case PPPOE_STATE_PADI_SENT:
AdamGreen 0:3b00827bb0b7 743 /*
AdamGreen 0:3b00827bb0b7 744 * We have two basic ways of retrying:
AdamGreen 0:3b00827bb0b7 745 * - Quick retry mode: try a few times in short sequence
AdamGreen 0:3b00827bb0b7 746 * - Slow retry mode: we already had a connection successfully
AdamGreen 0:3b00827bb0b7 747 * established and will try infinitely (without user
AdamGreen 0:3b00827bb0b7 748 * intervention)
AdamGreen 0:3b00827bb0b7 749 * We only enter slow retry mode if IFF_LINK1 (aka autodial)
AdamGreen 0:3b00827bb0b7 750 * is not set.
AdamGreen 0:3b00827bb0b7 751 */
AdamGreen 0:3b00827bb0b7 752
AdamGreen 0:3b00827bb0b7 753 /* initialize for quick retry mode */
AdamGreen 0:3b00827bb0b7 754 retry_wait = PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried);
AdamGreen 0:3b00827bb0b7 755
AdamGreen 0:3b00827bb0b7 756 sc->sc_padi_retried++;
AdamGreen 0:3b00827bb0b7 757 if (sc->sc_padi_retried >= PPPOE_DISC_MAXPADI) {
AdamGreen 0:3b00827bb0b7 758 #if 0
AdamGreen 0:3b00827bb0b7 759 if ((sc->sc_sppp.pp_if.if_flags & IFF_LINK1) == 0) {
AdamGreen 0:3b00827bb0b7 760 /* slow retry mode */
AdamGreen 0:3b00827bb0b7 761 retry_wait = PPPOE_SLOW_RETRY;
AdamGreen 0:3b00827bb0b7 762 } else
AdamGreen 0:3b00827bb0b7 763 #endif
AdamGreen 0:3b00827bb0b7 764 {
AdamGreen 0:3b00827bb0b7 765 pppoe_abort_connect(sc);
AdamGreen 0:3b00827bb0b7 766 return;
AdamGreen 0:3b00827bb0b7 767 }
AdamGreen 0:3b00827bb0b7 768 }
AdamGreen 0:3b00827bb0b7 769 if ((err = pppoe_send_padi(sc)) != 0) {
AdamGreen 0:3b00827bb0b7 770 sc->sc_padi_retried--;
AdamGreen 0:3b00827bb0b7 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));
AdamGreen 0:3b00827bb0b7 772 }
AdamGreen 0:3b00827bb0b7 773 sys_timeout(retry_wait, pppoe_timeout, sc);
AdamGreen 0:3b00827bb0b7 774 break;
AdamGreen 0:3b00827bb0b7 775
AdamGreen 0:3b00827bb0b7 776 case PPPOE_STATE_PADR_SENT:
AdamGreen 0:3b00827bb0b7 777 sc->sc_padr_retried++;
AdamGreen 0:3b00827bb0b7 778 if (sc->sc_padr_retried >= PPPOE_DISC_MAXPADR) {
AdamGreen 0:3b00827bb0b7 779 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
AdamGreen 0:3b00827bb0b7 780 sc->sc_state = PPPOE_STATE_PADI_SENT;
AdamGreen 0:3b00827bb0b7 781 sc->sc_padr_retried = 0;
AdamGreen 0:3b00827bb0b7 782 if ((err = pppoe_send_padi(sc)) != 0) {
AdamGreen 0:3b00827bb0b7 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));
AdamGreen 0:3b00827bb0b7 784 }
AdamGreen 0:3b00827bb0b7 785 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried), pppoe_timeout, sc);
AdamGreen 0:3b00827bb0b7 786 return;
AdamGreen 0:3b00827bb0b7 787 }
AdamGreen 0:3b00827bb0b7 788 if ((err = pppoe_send_padr(sc)) != 0) {
AdamGreen 0:3b00827bb0b7 789 sc->sc_padr_retried--;
AdamGreen 0:3b00827bb0b7 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));
AdamGreen 0:3b00827bb0b7 791 }
AdamGreen 0:3b00827bb0b7 792 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
AdamGreen 0:3b00827bb0b7 793 break;
AdamGreen 0:3b00827bb0b7 794 case PPPOE_STATE_CLOSING:
AdamGreen 0:3b00827bb0b7 795 pppoe_do_disconnect(sc);
AdamGreen 0:3b00827bb0b7 796 break;
AdamGreen 0:3b00827bb0b7 797 default:
AdamGreen 0:3b00827bb0b7 798 return; /* all done, work in peace */
AdamGreen 0:3b00827bb0b7 799 }
AdamGreen 0:3b00827bb0b7 800 }
AdamGreen 0:3b00827bb0b7 801
AdamGreen 0:3b00827bb0b7 802 /* Start a connection (i.e. initiate discovery phase) */
AdamGreen 0:3b00827bb0b7 803 int
AdamGreen 0:3b00827bb0b7 804 pppoe_connect(struct pppoe_softc *sc)
AdamGreen 0:3b00827bb0b7 805 {
AdamGreen 0:3b00827bb0b7 806 int err;
AdamGreen 0:3b00827bb0b7 807
AdamGreen 0:3b00827bb0b7 808 if (sc->sc_state != PPPOE_STATE_INITIAL) {
AdamGreen 0:3b00827bb0b7 809 return EBUSY;
AdamGreen 0:3b00827bb0b7 810 }
AdamGreen 0:3b00827bb0b7 811
AdamGreen 0:3b00827bb0b7 812 #ifdef PPPOE_SERVER
AdamGreen 0:3b00827bb0b7 813 /* wait PADI if IFF_PASSIVE */
AdamGreen 0:3b00827bb0b7 814 if ((sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
AdamGreen 0:3b00827bb0b7 815 return 0;
AdamGreen 0:3b00827bb0b7 816 }
AdamGreen 0:3b00827bb0b7 817 #endif
AdamGreen 0:3b00827bb0b7 818 /* save state, in case we fail to send PADI */
AdamGreen 0:3b00827bb0b7 819 sc->sc_state = PPPOE_STATE_PADI_SENT;
AdamGreen 0:3b00827bb0b7 820 sc->sc_padr_retried = 0;
AdamGreen 0:3b00827bb0b7 821 err = pppoe_send_padi(sc);
AdamGreen 0:3b00827bb0b7 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));
AdamGreen 0:3b00827bb0b7 823 sys_timeout(PPPOE_DISC_TIMEOUT, pppoe_timeout, sc);
AdamGreen 0:3b00827bb0b7 824 return err;
AdamGreen 0:3b00827bb0b7 825 }
AdamGreen 0:3b00827bb0b7 826
AdamGreen 0:3b00827bb0b7 827 /* disconnect */
AdamGreen 0:3b00827bb0b7 828 void
AdamGreen 0:3b00827bb0b7 829 pppoe_disconnect(struct pppoe_softc *sc)
AdamGreen 0:3b00827bb0b7 830 {
AdamGreen 0:3b00827bb0b7 831 if (sc->sc_state < PPPOE_STATE_SESSION) {
AdamGreen 0:3b00827bb0b7 832 return;
AdamGreen 0:3b00827bb0b7 833 }
AdamGreen 0:3b00827bb0b7 834 /*
AdamGreen 0:3b00827bb0b7 835 * Do not call pppoe_disconnect here, the upper layer state
AdamGreen 0:3b00827bb0b7 836 * machine gets confused by this. We must return from this
AdamGreen 0:3b00827bb0b7 837 * function and defer disconnecting to the timeout handler.
AdamGreen 0:3b00827bb0b7 838 */
AdamGreen 0:3b00827bb0b7 839 sc->sc_state = PPPOE_STATE_CLOSING;
AdamGreen 0:3b00827bb0b7 840 sys_timeout(20, pppoe_timeout, sc);
AdamGreen 0:3b00827bb0b7 841 }
AdamGreen 0:3b00827bb0b7 842
AdamGreen 0:3b00827bb0b7 843 static int
AdamGreen 0:3b00827bb0b7 844 pppoe_do_disconnect(struct pppoe_softc *sc)
AdamGreen 0:3b00827bb0b7 845 {
AdamGreen 0:3b00827bb0b7 846 int err;
AdamGreen 0:3b00827bb0b7 847
AdamGreen 0:3b00827bb0b7 848 if (sc->sc_state < PPPOE_STATE_SESSION) {
AdamGreen 0:3b00827bb0b7 849 err = EBUSY;
AdamGreen 0:3b00827bb0b7 850 } else {
AdamGreen 0:3b00827bb0b7 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));
AdamGreen 0:3b00827bb0b7 852 err = pppoe_send_padt(sc->sc_ethif, sc->sc_session, (const u8_t *)&sc->sc_dest);
AdamGreen 0:3b00827bb0b7 853 }
AdamGreen 0:3b00827bb0b7 854
AdamGreen 0:3b00827bb0b7 855 /* cleanup softc */
AdamGreen 0:3b00827bb0b7 856 sc->sc_state = PPPOE_STATE_INITIAL;
AdamGreen 0:3b00827bb0b7 857 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
AdamGreen 0:3b00827bb0b7 858 sc->sc_ac_cookie_len = 0;
AdamGreen 0:3b00827bb0b7 859 #ifdef PPPOE_SERVER
AdamGreen 0:3b00827bb0b7 860 if (sc->sc_hunique) {
AdamGreen 0:3b00827bb0b7 861 mem_free(sc->sc_hunique);
AdamGreen 0:3b00827bb0b7 862 sc->sc_hunique = NULL;
AdamGreen 0:3b00827bb0b7 863 }
AdamGreen 0:3b00827bb0b7 864 sc->sc_hunique_len = 0;
AdamGreen 0:3b00827bb0b7 865 #endif
AdamGreen 0:3b00827bb0b7 866 sc->sc_session = 0;
AdamGreen 0:3b00827bb0b7 867
AdamGreen 0:3b00827bb0b7 868 sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
AdamGreen 0:3b00827bb0b7 869
AdamGreen 0:3b00827bb0b7 870 return err;
AdamGreen 0:3b00827bb0b7 871 }
AdamGreen 0:3b00827bb0b7 872
AdamGreen 0:3b00827bb0b7 873 /* Connection attempt aborted */
AdamGreen 0:3b00827bb0b7 874 static void
AdamGreen 0:3b00827bb0b7 875 pppoe_abort_connect(struct pppoe_softc *sc)
AdamGreen 0:3b00827bb0b7 876 {
AdamGreen 0:3b00827bb0b7 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);
AdamGreen 0:3b00827bb0b7 878 sc->sc_state = PPPOE_STATE_CLOSING;
AdamGreen 0:3b00827bb0b7 879
AdamGreen 0:3b00827bb0b7 880 sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
AdamGreen 0:3b00827bb0b7 881
AdamGreen 0:3b00827bb0b7 882 /* clear connection state */
AdamGreen 0:3b00827bb0b7 883 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
AdamGreen 0:3b00827bb0b7 884 sc->sc_state = PPPOE_STATE_INITIAL;
AdamGreen 0:3b00827bb0b7 885 }
AdamGreen 0:3b00827bb0b7 886
AdamGreen 0:3b00827bb0b7 887 /* Send a PADR packet */
AdamGreen 0:3b00827bb0b7 888 static err_t
AdamGreen 0:3b00827bb0b7 889 pppoe_send_padr(struct pppoe_softc *sc)
AdamGreen 0:3b00827bb0b7 890 {
AdamGreen 0:3b00827bb0b7 891 struct pbuf *pb;
AdamGreen 0:3b00827bb0b7 892 u8_t *p;
AdamGreen 0:3b00827bb0b7 893 size_t len;
AdamGreen 0:3b00827bb0b7 894 #ifdef PPPOE_TODO
AdamGreen 0:3b00827bb0b7 895 size_t l1 = 0; /* XXX: gcc */
AdamGreen 0:3b00827bb0b7 896 #endif /* PPPOE_TODO */
AdamGreen 0:3b00827bb0b7 897
AdamGreen 0:3b00827bb0b7 898 if (sc->sc_state != PPPOE_STATE_PADR_SENT) {
AdamGreen 0:3b00827bb0b7 899 return ERR_CONN;
AdamGreen 0:3b00827bb0b7 900 }
AdamGreen 0:3b00827bb0b7 901
AdamGreen 0:3b00827bb0b7 902 len = 2 + 2 + 2 + 2 + sizeof(sc); /* service name, host unique */
AdamGreen 0:3b00827bb0b7 903 #ifdef PPPOE_TODO
AdamGreen 0:3b00827bb0b7 904 if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
AdamGreen 0:3b00827bb0b7 905 l1 = strlen(sc->sc_service_name);
AdamGreen 0:3b00827bb0b7 906 len += l1;
AdamGreen 0:3b00827bb0b7 907 }
AdamGreen 0:3b00827bb0b7 908 #endif /* PPPOE_TODO */
AdamGreen 0:3b00827bb0b7 909 if (sc->sc_ac_cookie_len > 0) {
AdamGreen 0:3b00827bb0b7 910 len += 2 + 2 + sc->sc_ac_cookie_len; /* AC cookie */
AdamGreen 0:3b00827bb0b7 911 }
AdamGreen 0:3b00827bb0b7 912 LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
AdamGreen 0:3b00827bb0b7 913 sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
AdamGreen 0:3b00827bb0b7 914 pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
AdamGreen 0:3b00827bb0b7 915 if (!pb) {
AdamGreen 0:3b00827bb0b7 916 return ERR_MEM;
AdamGreen 0:3b00827bb0b7 917 }
AdamGreen 0:3b00827bb0b7 918 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
AdamGreen 0:3b00827bb0b7 919 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
AdamGreen 0:3b00827bb0b7 920 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADR, 0, len);
AdamGreen 0:3b00827bb0b7 921 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
AdamGreen 0:3b00827bb0b7 922 #ifdef PPPOE_TODO
AdamGreen 0:3b00827bb0b7 923 if (sc->sc_service_name != NULL) {
AdamGreen 0:3b00827bb0b7 924 PPPOE_ADD_16(p, l1);
AdamGreen 0:3b00827bb0b7 925 MEMCPY(p, sc->sc_service_name, l1);
AdamGreen 0:3b00827bb0b7 926 p += l1;
AdamGreen 0:3b00827bb0b7 927 } else
AdamGreen 0:3b00827bb0b7 928 #endif /* PPPOE_TODO */
AdamGreen 0:3b00827bb0b7 929 {
AdamGreen 0:3b00827bb0b7 930 PPPOE_ADD_16(p, 0);
AdamGreen 0:3b00827bb0b7 931 }
AdamGreen 0:3b00827bb0b7 932 if (sc->sc_ac_cookie_len > 0) {
AdamGreen 0:3b00827bb0b7 933 PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
AdamGreen 0:3b00827bb0b7 934 PPPOE_ADD_16(p, sc->sc_ac_cookie_len);
AdamGreen 0:3b00827bb0b7 935 MEMCPY(p, sc->sc_ac_cookie, sc->sc_ac_cookie_len);
AdamGreen 0:3b00827bb0b7 936 p += sc->sc_ac_cookie_len;
AdamGreen 0:3b00827bb0b7 937 }
AdamGreen 0:3b00827bb0b7 938 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
AdamGreen 0:3b00827bb0b7 939 PPPOE_ADD_16(p, sizeof(sc));
AdamGreen 0:3b00827bb0b7 940 MEMCPY(p, &sc, sizeof sc);
AdamGreen 0:3b00827bb0b7 941
AdamGreen 0:3b00827bb0b7 942 return pppoe_output(sc, pb);
AdamGreen 0:3b00827bb0b7 943 }
AdamGreen 0:3b00827bb0b7 944
AdamGreen 0:3b00827bb0b7 945 /* send a PADT packet */
AdamGreen 0:3b00827bb0b7 946 static err_t
AdamGreen 0:3b00827bb0b7 947 pppoe_send_padt(struct netif *outgoing_if, u_int session, const u8_t *dest)
AdamGreen 0:3b00827bb0b7 948 {
AdamGreen 0:3b00827bb0b7 949 struct pbuf *pb;
AdamGreen 0:3b00827bb0b7 950 struct eth_hdr *ethhdr;
AdamGreen 0:3b00827bb0b7 951 err_t res;
AdamGreen 0:3b00827bb0b7 952 u8_t *p;
AdamGreen 0:3b00827bb0b7 953
AdamGreen 0:3b00827bb0b7 954 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN, PBUF_RAM);
AdamGreen 0:3b00827bb0b7 955 if (!pb) {
AdamGreen 0:3b00827bb0b7 956 return ERR_MEM;
AdamGreen 0:3b00827bb0b7 957 }
AdamGreen 0:3b00827bb0b7 958 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
AdamGreen 0:3b00827bb0b7 959
AdamGreen 0:3b00827bb0b7 960 ethhdr = (struct eth_hdr *)pb->payload;
AdamGreen 0:3b00827bb0b7 961 ethhdr->type = PP_HTONS(ETHTYPE_PPPOEDISC);
AdamGreen 0:3b00827bb0b7 962 MEMCPY(ethhdr->dest.addr, dest, sizeof(ethhdr->dest.addr));
AdamGreen 0:3b00827bb0b7 963 MEMCPY(ethhdr->src.addr, ((struct eth_addr *)outgoing_if->hwaddr)->addr, sizeof(ethhdr->src.addr));
AdamGreen 0:3b00827bb0b7 964
AdamGreen 0:3b00827bb0b7 965 p = (u8_t*)(ethhdr + 1);
AdamGreen 0:3b00827bb0b7 966 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADT, session, 0);
AdamGreen 0:3b00827bb0b7 967
AdamGreen 0:3b00827bb0b7 968 res = outgoing_if->linkoutput(outgoing_if, pb);
AdamGreen 0:3b00827bb0b7 969
AdamGreen 0:3b00827bb0b7 970 pbuf_free(pb);
AdamGreen 0:3b00827bb0b7 971
AdamGreen 0:3b00827bb0b7 972 return res;
AdamGreen 0:3b00827bb0b7 973 }
AdamGreen 0:3b00827bb0b7 974
AdamGreen 0:3b00827bb0b7 975 #ifdef PPPOE_SERVER
AdamGreen 0:3b00827bb0b7 976 static err_t
AdamGreen 0:3b00827bb0b7 977 pppoe_send_pado(struct pppoe_softc *sc)
AdamGreen 0:3b00827bb0b7 978 {
AdamGreen 0:3b00827bb0b7 979 struct pbuf *pb;
AdamGreen 0:3b00827bb0b7 980 u8_t *p;
AdamGreen 0:3b00827bb0b7 981 size_t len;
AdamGreen 0:3b00827bb0b7 982
AdamGreen 0:3b00827bb0b7 983 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
AdamGreen 0:3b00827bb0b7 984 return ERR_CONN;
AdamGreen 0:3b00827bb0b7 985 }
AdamGreen 0:3b00827bb0b7 986
AdamGreen 0:3b00827bb0b7 987 /* calc length */
AdamGreen 0:3b00827bb0b7 988 len = 0;
AdamGreen 0:3b00827bb0b7 989 /* include ac_cookie */
AdamGreen 0:3b00827bb0b7 990 len += 2 + 2 + sizeof(sc);
AdamGreen 0:3b00827bb0b7 991 /* include hunique */
AdamGreen 0:3b00827bb0b7 992 len += 2 + 2 + sc->sc_hunique_len;
AdamGreen 0:3b00827bb0b7 993 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
AdamGreen 0:3b00827bb0b7 994 if (!pb) {
AdamGreen 0:3b00827bb0b7 995 return ERR_MEM;
AdamGreen 0:3b00827bb0b7 996 }
AdamGreen 0:3b00827bb0b7 997 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
AdamGreen 0:3b00827bb0b7 998 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
AdamGreen 0:3b00827bb0b7 999 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADO, 0, len);
AdamGreen 0:3b00827bb0b7 1000 PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
AdamGreen 0:3b00827bb0b7 1001 PPPOE_ADD_16(p, sizeof(sc));
AdamGreen 0:3b00827bb0b7 1002 MEMCPY(p, &sc, sizeof(sc));
AdamGreen 0:3b00827bb0b7 1003 p += sizeof(sc);
AdamGreen 0:3b00827bb0b7 1004 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
AdamGreen 0:3b00827bb0b7 1005 PPPOE_ADD_16(p, sc->sc_hunique_len);
AdamGreen 0:3b00827bb0b7 1006 MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
AdamGreen 0:3b00827bb0b7 1007 return pppoe_output(sc, pb);
AdamGreen 0:3b00827bb0b7 1008 }
AdamGreen 0:3b00827bb0b7 1009
AdamGreen 0:3b00827bb0b7 1010 static err_t
AdamGreen 0:3b00827bb0b7 1011 pppoe_send_pads(struct pppoe_softc *sc)
AdamGreen 0:3b00827bb0b7 1012 {
AdamGreen 0:3b00827bb0b7 1013 struct pbuf *pb;
AdamGreen 0:3b00827bb0b7 1014 u8_t *p;
AdamGreen 0:3b00827bb0b7 1015 size_t len, l1 = 0; /* XXX: gcc */
AdamGreen 0:3b00827bb0b7 1016
AdamGreen 0:3b00827bb0b7 1017 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
AdamGreen 0:3b00827bb0b7 1018 return ERR_CONN;
AdamGreen 0:3b00827bb0b7 1019 }
AdamGreen 0:3b00827bb0b7 1020
AdamGreen 0:3b00827bb0b7 1021 sc->sc_session = mono_time.tv_sec % 0xff + 1;
AdamGreen 0:3b00827bb0b7 1022 /* calc length */
AdamGreen 0:3b00827bb0b7 1023 len = 0;
AdamGreen 0:3b00827bb0b7 1024 /* include hunique */
AdamGreen 0:3b00827bb0b7 1025 len += 2 + 2 + 2 + 2 + sc->sc_hunique_len; /* service name, host unique*/
AdamGreen 0:3b00827bb0b7 1026 if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
AdamGreen 0:3b00827bb0b7 1027 l1 = strlen(sc->sc_service_name);
AdamGreen 0:3b00827bb0b7 1028 len += l1;
AdamGreen 0:3b00827bb0b7 1029 }
AdamGreen 0:3b00827bb0b7 1030 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
AdamGreen 0:3b00827bb0b7 1031 if (!pb) {
AdamGreen 0:3b00827bb0b7 1032 return ERR_MEM;
AdamGreen 0:3b00827bb0b7 1033 }
AdamGreen 0:3b00827bb0b7 1034 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
AdamGreen 0:3b00827bb0b7 1035 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
AdamGreen 0:3b00827bb0b7 1036 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADS, sc->sc_session, len);
AdamGreen 0:3b00827bb0b7 1037 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
AdamGreen 0:3b00827bb0b7 1038 if (sc->sc_service_name != NULL) {
AdamGreen 0:3b00827bb0b7 1039 PPPOE_ADD_16(p, l1);
AdamGreen 0:3b00827bb0b7 1040 MEMCPY(p, sc->sc_service_name, l1);
AdamGreen 0:3b00827bb0b7 1041 p += l1;
AdamGreen 0:3b00827bb0b7 1042 } else {
AdamGreen 0:3b00827bb0b7 1043 PPPOE_ADD_16(p, 0);
AdamGreen 0:3b00827bb0b7 1044 }
AdamGreen 0:3b00827bb0b7 1045 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
AdamGreen 0:3b00827bb0b7 1046 PPPOE_ADD_16(p, sc->sc_hunique_len);
AdamGreen 0:3b00827bb0b7 1047 MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
AdamGreen 0:3b00827bb0b7 1048 return pppoe_output(sc, pb);
AdamGreen 0:3b00827bb0b7 1049 }
AdamGreen 0:3b00827bb0b7 1050 #endif
AdamGreen 0:3b00827bb0b7 1051
AdamGreen 0:3b00827bb0b7 1052 err_t
AdamGreen 0:3b00827bb0b7 1053 pppoe_xmit(struct pppoe_softc *sc, struct pbuf *pb)
AdamGreen 0:3b00827bb0b7 1054 {
AdamGreen 0:3b00827bb0b7 1055 u8_t *p;
AdamGreen 0:3b00827bb0b7 1056 size_t len;
AdamGreen 0:3b00827bb0b7 1057
AdamGreen 0:3b00827bb0b7 1058 /* are we ready to process data yet? */
AdamGreen 0:3b00827bb0b7 1059 if (sc->sc_state < PPPOE_STATE_SESSION) {
AdamGreen 0:3b00827bb0b7 1060 /*sppp_flush(&sc->sc_sppp.pp_if);*/
AdamGreen 0:3b00827bb0b7 1061 pbuf_free(pb);
AdamGreen 0:3b00827bb0b7 1062 return ERR_CONN;
AdamGreen 0:3b00827bb0b7 1063 }
AdamGreen 0:3b00827bb0b7 1064
AdamGreen 0:3b00827bb0b7 1065 len = pb->tot_len;
AdamGreen 0:3b00827bb0b7 1066
AdamGreen 0:3b00827bb0b7 1067 /* make room for Ethernet header - should not fail */
AdamGreen 0:3b00827bb0b7 1068 if (pbuf_header(pb, sizeof(struct eth_hdr) + PPPOE_HEADERLEN) != 0) {
AdamGreen 0:3b00827bb0b7 1069 /* bail out */
AdamGreen 0:3b00827bb0b7 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));
AdamGreen 0:3b00827bb0b7 1071 LINK_STATS_INC(link.lenerr);
AdamGreen 0:3b00827bb0b7 1072 pbuf_free(pb);
AdamGreen 0:3b00827bb0b7 1073 return ERR_BUF;
AdamGreen 0:3b00827bb0b7 1074 }
AdamGreen 0:3b00827bb0b7 1075
AdamGreen 0:3b00827bb0b7 1076 p = (u8_t*)pb->payload + sizeof(struct eth_hdr);
AdamGreen 0:3b00827bb0b7 1077 PPPOE_ADD_HEADER(p, 0, sc->sc_session, len);
AdamGreen 0:3b00827bb0b7 1078
AdamGreen 0:3b00827bb0b7 1079 return pppoe_output(sc, pb);
AdamGreen 0:3b00827bb0b7 1080 }
AdamGreen 0:3b00827bb0b7 1081
AdamGreen 0:3b00827bb0b7 1082 #if 0 /*def PFIL_HOOKS*/
AdamGreen 0:3b00827bb0b7 1083 static int
AdamGreen 0:3b00827bb0b7 1084 pppoe_ifattach_hook(void *arg, struct pbuf **mp, struct netif *ifp, int dir)
AdamGreen 0:3b00827bb0b7 1085 {
AdamGreen 0:3b00827bb0b7 1086 struct pppoe_softc *sc;
AdamGreen 0:3b00827bb0b7 1087 int s;
AdamGreen 0:3b00827bb0b7 1088
AdamGreen 0:3b00827bb0b7 1089 if (mp != (struct pbuf **)PFIL_IFNET_DETACH) {
AdamGreen 0:3b00827bb0b7 1090 return 0;
AdamGreen 0:3b00827bb0b7 1091 }
AdamGreen 0:3b00827bb0b7 1092
AdamGreen 0:3b00827bb0b7 1093 LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
AdamGreen 0:3b00827bb0b7 1094 if (sc->sc_ethif != ifp) {
AdamGreen 0:3b00827bb0b7 1095 continue;
AdamGreen 0:3b00827bb0b7 1096 }
AdamGreen 0:3b00827bb0b7 1097 if (sc->sc_sppp.pp_if.if_flags & IFF_UP) {
AdamGreen 0:3b00827bb0b7 1098 sc->sc_sppp.pp_if.if_flags &= ~(IFF_UP|IFF_RUNNING);
AdamGreen 0:3b00827bb0b7 1099 printf("%c%c%"U16_F": ethernet interface detached, going down\n",
AdamGreen 0:3b00827bb0b7 1100 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
AdamGreen 0:3b00827bb0b7 1101 }
AdamGreen 0:3b00827bb0b7 1102 sc->sc_ethif = NULL;
AdamGreen 0:3b00827bb0b7 1103 pppoe_clear_softc(sc, "ethernet interface detached");
AdamGreen 0:3b00827bb0b7 1104 }
AdamGreen 0:3b00827bb0b7 1105
AdamGreen 0:3b00827bb0b7 1106 return 0;
AdamGreen 0:3b00827bb0b7 1107 }
AdamGreen 0:3b00827bb0b7 1108 #endif
AdamGreen 0:3b00827bb0b7 1109
AdamGreen 0:3b00827bb0b7 1110 static void
AdamGreen 0:3b00827bb0b7 1111 pppoe_clear_softc(struct pppoe_softc *sc, const char *message)
AdamGreen 0:3b00827bb0b7 1112 {
AdamGreen 0:3b00827bb0b7 1113 LWIP_UNUSED_ARG(message);
AdamGreen 0:3b00827bb0b7 1114
AdamGreen 0:3b00827bb0b7 1115 /* stop timer */
AdamGreen 0:3b00827bb0b7 1116 sys_untimeout(pppoe_timeout, sc);
AdamGreen 0:3b00827bb0b7 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));
AdamGreen 0:3b00827bb0b7 1118
AdamGreen 0:3b00827bb0b7 1119 /* fix our state */
AdamGreen 0:3b00827bb0b7 1120 sc->sc_state = PPPOE_STATE_INITIAL;
AdamGreen 0:3b00827bb0b7 1121
AdamGreen 0:3b00827bb0b7 1122 /* notify upper layers */
AdamGreen 0:3b00827bb0b7 1123 sc->sc_linkStatusCB(sc->sc_pd, 0);
AdamGreen 0:3b00827bb0b7 1124
AdamGreen 0:3b00827bb0b7 1125 /* clean up softc */
AdamGreen 0:3b00827bb0b7 1126 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
AdamGreen 0:3b00827bb0b7 1127 sc->sc_ac_cookie_len = 0;
AdamGreen 0:3b00827bb0b7 1128 sc->sc_session = 0;
AdamGreen 0:3b00827bb0b7 1129 }
AdamGreen 0:3b00827bb0b7 1130
AdamGreen 0:3b00827bb0b7 1131 #endif /* PPPOE_SUPPORT */
AdamGreen 0:3b00827bb0b7 1132