Arlindo Montagnoli / Mbed 2 deprecated ProjetoBB

ProjetoBB

Dependencies:   F7_Ethernet WebSocketClient mbed mcp3008

Fork of Nucleo_F746ZG_Ethernet by Dieter Graef

F7_Ethernet/lwip/netif/ppp/ppp_oe.c@0:f9b6112278fe, 2016-06-18 (annotated)

Committer:
DieterGraef
Date:
Sat Jun 18 10:49:12 2016 +0000
Revision:
0:f9b6112278fe
Ethernet for the NUCLEO STM32F746 Board Testprogram uses DHCP and NTP to set the clock

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DieterGraef 0:f9b6112278fe 1 /*****************************************************************************
DieterGraef 0:f9b6112278fe 2 * ppp_oe.c - PPP Over Ethernet implementation for lwIP.
DieterGraef 0:f9b6112278fe 3 *
DieterGraef 0:f9b6112278fe 4 * Copyright (c) 2006 by Marc Boucher, Services Informatiques (MBSI) inc.
DieterGraef 0:f9b6112278fe 5 *
DieterGraef 0:f9b6112278fe 6 * The authors hereby grant permission to use, copy, modify, distribute,
DieterGraef 0:f9b6112278fe 7 * and license this software and its documentation for any purpose, provided
DieterGraef 0:f9b6112278fe 8 * that existing copyright notices are retained in all copies and that this
DieterGraef 0:f9b6112278fe 9 * notice and the following disclaimer are included verbatim in any
DieterGraef 0:f9b6112278fe 10 * distributions. No written agreement, license, or royalty fee is required
DieterGraef 0:f9b6112278fe 11 * for any of the authorized uses.
DieterGraef 0:f9b6112278fe 12 *
DieterGraef 0:f9b6112278fe 13 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
DieterGraef 0:f9b6112278fe 14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
DieterGraef 0:f9b6112278fe 15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
DieterGraef 0:f9b6112278fe 16 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
DieterGraef 0:f9b6112278fe 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
DieterGraef 0:f9b6112278fe 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DieterGraef 0:f9b6112278fe 19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
DieterGraef 0:f9b6112278fe 20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
DieterGraef 0:f9b6112278fe 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
DieterGraef 0:f9b6112278fe 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
DieterGraef 0:f9b6112278fe 23 *
DieterGraef 0:f9b6112278fe 24 ******************************************************************************
DieterGraef 0:f9b6112278fe 25 * REVISION HISTORY
DieterGraef 0:f9b6112278fe 26 *
DieterGraef 0:f9b6112278fe 27 * 06-01-01 Marc Boucher <marc@mbsi.ca>
DieterGraef 0:f9b6112278fe 28 * Ported to lwIP.
DieterGraef 0:f9b6112278fe 29 *****************************************************************************/
DieterGraef 0:f9b6112278fe 30
DieterGraef 0:f9b6112278fe 31
DieterGraef 0:f9b6112278fe 32
DieterGraef 0:f9b6112278fe 33 /* based on NetBSD: if_pppoe.c,v 1.64 2006/01/31 23:50:15 martin Exp */
DieterGraef 0:f9b6112278fe 34
DieterGraef 0:f9b6112278fe 35 /*-
DieterGraef 0:f9b6112278fe 36 * Copyright (c) 2002 The NetBSD Foundation, Inc.
DieterGraef 0:f9b6112278fe 37 * All rights reserved.
DieterGraef 0:f9b6112278fe 38 *
DieterGraef 0:f9b6112278fe 39 * This code is derived from software contributed to The NetBSD Foundation
DieterGraef 0:f9b6112278fe 40 * by Martin Husemann <martin@NetBSD.org>.
DieterGraef 0:f9b6112278fe 41 *
DieterGraef 0:f9b6112278fe 42 * Redistribution and use in source and binary forms, with or without
DieterGraef 0:f9b6112278fe 43 * modification, are permitted provided that the following conditions
DieterGraef 0:f9b6112278fe 44 * are met:
DieterGraef 0:f9b6112278fe 45 * 1. Redistributions of source code must retain the above copyright
DieterGraef 0:f9b6112278fe 46 * notice, this list of conditions and the following disclaimer.
DieterGraef 0:f9b6112278fe 47 * 2. Redistributions in binary form must reproduce the above copyright
DieterGraef 0:f9b6112278fe 48 * notice, this list of conditions and the following disclaimer in the
DieterGraef 0:f9b6112278fe 49 * documentation and/or other materials provided with the distribution.
DieterGraef 0:f9b6112278fe 50 * 3. All advertising materials mentioning features or use of this software
DieterGraef 0:f9b6112278fe 51 * must display the following acknowledgement:
DieterGraef 0:f9b6112278fe 52 * This product includes software developed by the NetBSD
DieterGraef 0:f9b6112278fe 53 * Foundation, Inc. and its contributors.
DieterGraef 0:f9b6112278fe 54 * 4. Neither the name of The NetBSD Foundation nor the names of its
DieterGraef 0:f9b6112278fe 55 * contributors may be used to endorse or promote products derived
DieterGraef 0:f9b6112278fe 56 * from this software without specific prior written permission.
DieterGraef 0:f9b6112278fe 57 *
DieterGraef 0:f9b6112278fe 58 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
DieterGraef 0:f9b6112278fe 59 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
DieterGraef 0:f9b6112278fe 60 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
DieterGraef 0:f9b6112278fe 61 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
DieterGraef 0:f9b6112278fe 62 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
DieterGraef 0:f9b6112278fe 63 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
DieterGraef 0:f9b6112278fe 64 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
DieterGraef 0:f9b6112278fe 65 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
DieterGraef 0:f9b6112278fe 66 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
DieterGraef 0:f9b6112278fe 67 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
DieterGraef 0:f9b6112278fe 68 * POSSIBILITY OF SUCH DAMAGE.
DieterGraef 0:f9b6112278fe 69 */
DieterGraef 0:f9b6112278fe 70
DieterGraef 0:f9b6112278fe 71 #include "lwip/opt.h"
DieterGraef 0:f9b6112278fe 72
DieterGraef 0:f9b6112278fe 73 #if PPPOE_SUPPORT /* don't build if not configured for use in lwipopts.h */
DieterGraef 0:f9b6112278fe 74
DieterGraef 0:f9b6112278fe 75 #include "netif/ppp_oe.h"
DieterGraef 0:f9b6112278fe 76
DieterGraef 0:f9b6112278fe 77 #include "ppp_impl.h"
DieterGraef 0:f9b6112278fe 78 #include "pppdebug.h"
DieterGraef 0:f9b6112278fe 79
DieterGraef 0:f9b6112278fe 80 #include "lwip/timers.h"
DieterGraef 0:f9b6112278fe 81 #include "lwip/memp.h"
DieterGraef 0:f9b6112278fe 82
DieterGraef 0:f9b6112278fe 83 #include <string.h>
DieterGraef 0:f9b6112278fe 84 #include <stdio.h>
DieterGraef 0:f9b6112278fe 85
DieterGraef 0:f9b6112278fe 86
DieterGraef 0:f9b6112278fe 87 /* Add a 16 bit unsigned value to a buffer pointed to by PTR */
DieterGraef 0:f9b6112278fe 88 #define PPPOE_ADD_16(PTR, VAL) \
DieterGraef 0:f9b6112278fe 89 *(PTR)++ = (u8_t)((VAL) / 256); \
DieterGraef 0:f9b6112278fe 90 *(PTR)++ = (u8_t)((VAL) % 256)
DieterGraef 0:f9b6112278fe 91
DieterGraef 0:f9b6112278fe 92 /* Add a complete PPPoE header to the buffer pointed to by PTR */
DieterGraef 0:f9b6112278fe 93 #define PPPOE_ADD_HEADER(PTR, CODE, SESS, LEN) \
DieterGraef 0:f9b6112278fe 94 *(PTR)++ = PPPOE_VERTYPE; \
DieterGraef 0:f9b6112278fe 95 *(PTR)++ = (CODE); \
DieterGraef 0:f9b6112278fe 96 PPPOE_ADD_16(PTR, SESS); \
DieterGraef 0:f9b6112278fe 97 PPPOE_ADD_16(PTR, LEN)
DieterGraef 0:f9b6112278fe 98
DieterGraef 0:f9b6112278fe 99 #define PPPOE_DISC_TIMEOUT (5*1000) /* base for quick timeout calculation */
DieterGraef 0:f9b6112278fe 100 #define PPPOE_SLOW_RETRY (60*1000) /* persistent retry interval */
DieterGraef 0:f9b6112278fe 101 #define PPPOE_DISC_MAXPADI 4 /* retry PADI four times (quickly) */
DieterGraef 0:f9b6112278fe 102 #define PPPOE_DISC_MAXPADR 2 /* retry PADR twice */
DieterGraef 0:f9b6112278fe 103
DieterGraef 0:f9b6112278fe 104 #ifdef PPPOE_SERVER
DieterGraef 0:f9b6112278fe 105 #error "PPPOE_SERVER is not yet supported under lwIP!"
DieterGraef 0:f9b6112278fe 106 /* from if_spppsubr.c */
DieterGraef 0:f9b6112278fe 107 #define IFF_PASSIVE IFF_LINK0 /* wait passively for connection */
DieterGraef 0:f9b6112278fe 108 #endif
DieterGraef 0:f9b6112278fe 109
DieterGraef 0:f9b6112278fe 110 #ifndef PPPOE_ERRORSTRING_LEN
DieterGraef 0:f9b6112278fe 111 #define PPPOE_ERRORSTRING_LEN 64
DieterGraef 0:f9b6112278fe 112 #endif
DieterGraef 0:f9b6112278fe 113 static char pppoe_error_tmp[PPPOE_ERRORSTRING_LEN];
DieterGraef 0:f9b6112278fe 114
DieterGraef 0:f9b6112278fe 115
DieterGraef 0:f9b6112278fe 116 /* input routines */
DieterGraef 0:f9b6112278fe 117 static void pppoe_dispatch_disc_pkt(struct netif *, struct pbuf *);
DieterGraef 0:f9b6112278fe 118
DieterGraef 0:f9b6112278fe 119 /* management routines */
DieterGraef 0:f9b6112278fe 120 static int pppoe_do_disconnect(struct pppoe_softc *);
DieterGraef 0:f9b6112278fe 121 static void pppoe_abort_connect(struct pppoe_softc *);
DieterGraef 0:f9b6112278fe 122 static void pppoe_clear_softc(struct pppoe_softc *, const char *);
DieterGraef 0:f9b6112278fe 123
DieterGraef 0:f9b6112278fe 124 /* internal timeout handling */
DieterGraef 0:f9b6112278fe 125 static void pppoe_timeout(void *);
DieterGraef 0:f9b6112278fe 126
DieterGraef 0:f9b6112278fe 127 /* sending actual protocol controll packets */
DieterGraef 0:f9b6112278fe 128 static err_t pppoe_send_padi(struct pppoe_softc *);
DieterGraef 0:f9b6112278fe 129 static err_t pppoe_send_padr(struct pppoe_softc *);
DieterGraef 0:f9b6112278fe 130 #ifdef PPPOE_SERVER
DieterGraef 0:f9b6112278fe 131 static err_t pppoe_send_pado(struct pppoe_softc *);
DieterGraef 0:f9b6112278fe 132 static err_t pppoe_send_pads(struct pppoe_softc *);
DieterGraef 0:f9b6112278fe 133 #endif
DieterGraef 0:f9b6112278fe 134 static err_t pppoe_send_padt(struct netif *, u_int, const u8_t *);
DieterGraef 0:f9b6112278fe 135
DieterGraef 0:f9b6112278fe 136 /* internal helper functions */
DieterGraef 0:f9b6112278fe 137 static struct pppoe_softc * pppoe_find_softc_by_session(u_int, struct netif *);
DieterGraef 0:f9b6112278fe 138 static struct pppoe_softc * pppoe_find_softc_by_hunique(u8_t *, size_t, struct netif *);
DieterGraef 0:f9b6112278fe 139
DieterGraef 0:f9b6112278fe 140 /** linked list of created pppoe interfaces */
DieterGraef 0:f9b6112278fe 141 static struct pppoe_softc *pppoe_softc_list;
DieterGraef 0:f9b6112278fe 142
DieterGraef 0:f9b6112278fe 143 err_t
DieterGraef 0:f9b6112278fe 144 pppoe_create(struct netif *ethif, int pd, void (*linkStatusCB)(int pd, int up), struct pppoe_softc **scptr)
DieterGraef 0:f9b6112278fe 145 {
DieterGraef 0:f9b6112278fe 146 struct pppoe_softc *sc;
DieterGraef 0:f9b6112278fe 147
DieterGraef 0:f9b6112278fe 148 sc = (struct pppoe_softc *)memp_malloc(MEMP_PPPOE_IF);
DieterGraef 0:f9b6112278fe 149 if (sc == NULL) {
DieterGraef 0:f9b6112278fe 150 *scptr = NULL;
DieterGraef 0:f9b6112278fe 151 return ERR_MEM;
DieterGraef 0:f9b6112278fe 152 }
DieterGraef 0:f9b6112278fe 153 memset(sc, 0, sizeof(struct pppoe_softc));
DieterGraef 0:f9b6112278fe 154
DieterGraef 0:f9b6112278fe 155 /* changed to real address later */
DieterGraef 0:f9b6112278fe 156 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
DieterGraef 0:f9b6112278fe 157
DieterGraef 0:f9b6112278fe 158 sc->sc_pd = pd;
DieterGraef 0:f9b6112278fe 159 sc->sc_linkStatusCB = linkStatusCB;
DieterGraef 0:f9b6112278fe 160 sc->sc_ethif = ethif;
DieterGraef 0:f9b6112278fe 161
DieterGraef 0:f9b6112278fe 162 /* put the new interface at the head of the list */
DieterGraef 0:f9b6112278fe 163 sc->next = pppoe_softc_list;
DieterGraef 0:f9b6112278fe 164 pppoe_softc_list = sc;
DieterGraef 0:f9b6112278fe 165
DieterGraef 0:f9b6112278fe 166 *scptr = sc;
DieterGraef 0:f9b6112278fe 167
DieterGraef 0:f9b6112278fe 168 return ERR_OK;
DieterGraef 0:f9b6112278fe 169 }
DieterGraef 0:f9b6112278fe 170
DieterGraef 0:f9b6112278fe 171 err_t
DieterGraef 0:f9b6112278fe 172 pppoe_destroy(struct netif *ifp)
DieterGraef 0:f9b6112278fe 173 {
DieterGraef 0:f9b6112278fe 174 struct pppoe_softc *sc, *prev = NULL;
DieterGraef 0:f9b6112278fe 175
DieterGraef 0:f9b6112278fe 176 for (sc = pppoe_softc_list; sc != NULL; prev = sc, sc = sc->next) {
DieterGraef 0:f9b6112278fe 177 if (sc->sc_ethif == ifp) {
DieterGraef 0:f9b6112278fe 178 break;
DieterGraef 0:f9b6112278fe 179 }
DieterGraef 0:f9b6112278fe 180 }
DieterGraef 0:f9b6112278fe 181
DieterGraef 0:f9b6112278fe 182 if(!(sc && (sc->sc_ethif == ifp))) {
DieterGraef 0:f9b6112278fe 183 return ERR_IF;
DieterGraef 0:f9b6112278fe 184 }
DieterGraef 0:f9b6112278fe 185
DieterGraef 0:f9b6112278fe 186 sys_untimeout(pppoe_timeout, sc);
DieterGraef 0:f9b6112278fe 187 if (prev == NULL) {
DieterGraef 0:f9b6112278fe 188 /* remove sc from the head of the list */
DieterGraef 0:f9b6112278fe 189 pppoe_softc_list = sc->next;
DieterGraef 0:f9b6112278fe 190 } else {
DieterGraef 0:f9b6112278fe 191 /* remove sc from the list */
DieterGraef 0:f9b6112278fe 192 prev->next = sc->next;
DieterGraef 0:f9b6112278fe 193 }
DieterGraef 0:f9b6112278fe 194
DieterGraef 0:f9b6112278fe 195 #ifdef PPPOE_TODO
DieterGraef 0:f9b6112278fe 196 if (sc->sc_concentrator_name) {
DieterGraef 0:f9b6112278fe 197 mem_free(sc->sc_concentrator_name);
DieterGraef 0:f9b6112278fe 198 }
DieterGraef 0:f9b6112278fe 199 if (sc->sc_service_name) {
DieterGraef 0:f9b6112278fe 200 mem_free(sc->sc_service_name);
DieterGraef 0:f9b6112278fe 201 }
DieterGraef 0:f9b6112278fe 202 #endif /* PPPOE_TODO */
DieterGraef 0:f9b6112278fe 203 memp_free(MEMP_PPPOE_IF, sc);
DieterGraef 0:f9b6112278fe 204
DieterGraef 0:f9b6112278fe 205 return ERR_OK;
DieterGraef 0:f9b6112278fe 206 }
DieterGraef 0:f9b6112278fe 207
DieterGraef 0:f9b6112278fe 208 /*
DieterGraef 0:f9b6112278fe 209 * Find the interface handling the specified session.
DieterGraef 0:f9b6112278fe 210 * Note: O(number of sessions open), this is a client-side only, mean
DieterGraef 0:f9b6112278fe 211 * and lean implementation, so number of open sessions typically should
DieterGraef 0:f9b6112278fe 212 * be 1.
DieterGraef 0:f9b6112278fe 213 */
DieterGraef 0:f9b6112278fe 214 static struct pppoe_softc *
DieterGraef 0:f9b6112278fe 215 pppoe_find_softc_by_session(u_int session, struct netif *rcvif)
DieterGraef 0:f9b6112278fe 216 {
DieterGraef 0:f9b6112278fe 217 struct pppoe_softc *sc;
DieterGraef 0:f9b6112278fe 218
DieterGraef 0:f9b6112278fe 219 if (session == 0) {
DieterGraef 0:f9b6112278fe 220 return NULL;
DieterGraef 0:f9b6112278fe 221 }
DieterGraef 0:f9b6112278fe 222
DieterGraef 0:f9b6112278fe 223 for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
DieterGraef 0:f9b6112278fe 224 if (sc->sc_state == PPPOE_STATE_SESSION
DieterGraef 0:f9b6112278fe 225 && sc->sc_session == session) {
DieterGraef 0:f9b6112278fe 226 if (sc->sc_ethif == rcvif) {
DieterGraef 0:f9b6112278fe 227 return sc;
DieterGraef 0:f9b6112278fe 228 } else {
DieterGraef 0:f9b6112278fe 229 return NULL;
DieterGraef 0:f9b6112278fe 230 }
DieterGraef 0:f9b6112278fe 231 }
DieterGraef 0:f9b6112278fe 232 }
DieterGraef 0:f9b6112278fe 233 return NULL;
DieterGraef 0:f9b6112278fe 234 }
DieterGraef 0:f9b6112278fe 235
DieterGraef 0:f9b6112278fe 236 /* Check host unique token passed and return appropriate softc pointer,
DieterGraef 0:f9b6112278fe 237 * or NULL if token is bogus. */
DieterGraef 0:f9b6112278fe 238 static struct pppoe_softc *
DieterGraef 0:f9b6112278fe 239 pppoe_find_softc_by_hunique(u8_t *token, size_t len, struct netif *rcvif)
DieterGraef 0:f9b6112278fe 240 {
DieterGraef 0:f9b6112278fe 241 struct pppoe_softc *sc, *t;
DieterGraef 0:f9b6112278fe 242
DieterGraef 0:f9b6112278fe 243 if (pppoe_softc_list == NULL) {
DieterGraef 0:f9b6112278fe 244 return NULL;
DieterGraef 0:f9b6112278fe 245 }
DieterGraef 0:f9b6112278fe 246
DieterGraef 0:f9b6112278fe 247 if (len != sizeof sc) {
DieterGraef 0:f9b6112278fe 248 return NULL;
DieterGraef 0:f9b6112278fe 249 }
DieterGraef 0:f9b6112278fe 250 MEMCPY(&t, token, len);
DieterGraef 0:f9b6112278fe 251
DieterGraef 0:f9b6112278fe 252 for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
DieterGraef 0:f9b6112278fe 253 if (sc == t) {
DieterGraef 0:f9b6112278fe 254 break;
DieterGraef 0:f9b6112278fe 255 }
DieterGraef 0:f9b6112278fe 256 }
DieterGraef 0:f9b6112278fe 257
DieterGraef 0:f9b6112278fe 258 if (sc == NULL) {
DieterGraef 0:f9b6112278fe 259 PPPDEBUG(LOG_DEBUG, ("pppoe: alien host unique tag, no session found\n"));
DieterGraef 0:f9b6112278fe 260 return NULL;
DieterGraef 0:f9b6112278fe 261 }
DieterGraef 0:f9b6112278fe 262
DieterGraef 0:f9b6112278fe 263 /* should be safe to access *sc now */
DieterGraef 0:f9b6112278fe 264 if (sc->sc_state < PPPOE_STATE_PADI_SENT || sc->sc_state >= PPPOE_STATE_SESSION) {
DieterGraef 0:f9b6112278fe 265 printf("%c%c%"U16_F": host unique tag found, but it belongs to a connection in state %d\n",
DieterGraef 0:f9b6112278fe 266 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, sc->sc_state);
DieterGraef 0:f9b6112278fe 267 return NULL;
DieterGraef 0:f9b6112278fe 268 }
DieterGraef 0:f9b6112278fe 269 if (sc->sc_ethif != rcvif) {
DieterGraef 0:f9b6112278fe 270 printf("%c%c%"U16_F": wrong interface, not accepting host unique\n",
DieterGraef 0:f9b6112278fe 271 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
DieterGraef 0:f9b6112278fe 272 return NULL;
DieterGraef 0:f9b6112278fe 273 }
DieterGraef 0:f9b6112278fe 274 return sc;
DieterGraef 0:f9b6112278fe 275 }
DieterGraef 0:f9b6112278fe 276
DieterGraef 0:f9b6112278fe 277 static void
DieterGraef 0:f9b6112278fe 278 pppoe_linkstatus_up(struct pppoe_softc *sc)
DieterGraef 0:f9b6112278fe 279 {
DieterGraef 0:f9b6112278fe 280 sc->sc_linkStatusCB(sc->sc_pd, 1);
DieterGraef 0:f9b6112278fe 281 }
DieterGraef 0:f9b6112278fe 282
DieterGraef 0:f9b6112278fe 283 /* analyze and handle a single received packet while not in session state */
DieterGraef 0:f9b6112278fe 284 static void
DieterGraef 0:f9b6112278fe 285 pppoe_dispatch_disc_pkt(struct netif *netif, struct pbuf *pb)
DieterGraef 0:f9b6112278fe 286 {
DieterGraef 0:f9b6112278fe 287 u16_t tag, len;
DieterGraef 0:f9b6112278fe 288 u16_t session, plen;
DieterGraef 0:f9b6112278fe 289 struct pppoe_softc *sc;
DieterGraef 0:f9b6112278fe 290 const char *err_msg;
DieterGraef 0:f9b6112278fe 291 char devname[6];
DieterGraef 0:f9b6112278fe 292 u8_t *ac_cookie;
DieterGraef 0:f9b6112278fe 293 u16_t ac_cookie_len;
DieterGraef 0:f9b6112278fe 294 #ifdef PPPOE_SERVER
DieterGraef 0:f9b6112278fe 295 u8_t *hunique;
DieterGraef 0:f9b6112278fe 296 size_t hunique_len;
DieterGraef 0:f9b6112278fe 297 #endif
DieterGraef 0:f9b6112278fe 298 struct pppoehdr *ph;
DieterGraef 0:f9b6112278fe 299 struct pppoetag pt;
DieterGraef 0:f9b6112278fe 300 int off, err, errortag;
DieterGraef 0:f9b6112278fe 301 struct eth_hdr *ethhdr;
DieterGraef 0:f9b6112278fe 302
DieterGraef 0:f9b6112278fe 303 pb = pppSingleBuf(pb);
DieterGraef 0:f9b6112278fe 304
DieterGraef 0:f9b6112278fe 305 strcpy(devname, "pppoe"); /* as long as we don't know which instance */
DieterGraef 0:f9b6112278fe 306 err_msg = NULL;
DieterGraef 0:f9b6112278fe 307 errortag = 0;
DieterGraef 0:f9b6112278fe 308 if (pb->len < sizeof(*ethhdr)) {
DieterGraef 0:f9b6112278fe 309 goto done;
DieterGraef 0:f9b6112278fe 310 }
DieterGraef 0:f9b6112278fe 311 ethhdr = (struct eth_hdr *)pb->payload;
DieterGraef 0:f9b6112278fe 312 off = sizeof(*ethhdr);
DieterGraef 0:f9b6112278fe 313
DieterGraef 0:f9b6112278fe 314 ac_cookie = NULL;
DieterGraef 0:f9b6112278fe 315 ac_cookie_len = 0;
DieterGraef 0:f9b6112278fe 316 #ifdef PPPOE_SERVER
DieterGraef 0:f9b6112278fe 317 hunique = NULL;
DieterGraef 0:f9b6112278fe 318 hunique_len = 0;
DieterGraef 0:f9b6112278fe 319 #endif
DieterGraef 0:f9b6112278fe 320 session = 0;
DieterGraef 0:f9b6112278fe 321 if (pb->len - off < PPPOE_HEADERLEN) {
DieterGraef 0:f9b6112278fe 322 printf("pppoe: packet too short: %d\n", pb->len);
DieterGraef 0:f9b6112278fe 323 goto done;
DieterGraef 0:f9b6112278fe 324 }
DieterGraef 0:f9b6112278fe 325
DieterGraef 0:f9b6112278fe 326 ph = (struct pppoehdr *) (ethhdr + 1);
DieterGraef 0:f9b6112278fe 327 if (ph->vertype != PPPOE_VERTYPE) {
DieterGraef 0:f9b6112278fe 328 printf("pppoe: unknown version/type packet: 0x%x\n", ph->vertype);
DieterGraef 0:f9b6112278fe 329 goto done;
DieterGraef 0:f9b6112278fe 330 }
DieterGraef 0:f9b6112278fe 331 session = ntohs(ph->session);
DieterGraef 0:f9b6112278fe 332 plen = ntohs(ph->plen);
DieterGraef 0:f9b6112278fe 333 off += sizeof(*ph);
DieterGraef 0:f9b6112278fe 334
DieterGraef 0:f9b6112278fe 335 if (plen + off > pb->len) {
DieterGraef 0:f9b6112278fe 336 printf("pppoe: packet content does not fit: data available = %d, packet size = %u\n",
DieterGraef 0:f9b6112278fe 337 pb->len - off, plen);
DieterGraef 0:f9b6112278fe 338 goto done;
DieterGraef 0:f9b6112278fe 339 }
DieterGraef 0:f9b6112278fe 340 if(pb->tot_len == pb->len) {
DieterGraef 0:f9b6112278fe 341 pb->tot_len = pb->len = (u16_t)off + plen; /* ignore trailing garbage */
DieterGraef 0:f9b6112278fe 342 }
DieterGraef 0:f9b6112278fe 343 tag = 0;
DieterGraef 0:f9b6112278fe 344 len = 0;
DieterGraef 0:f9b6112278fe 345 sc = NULL;
DieterGraef 0:f9b6112278fe 346 while (off + sizeof(pt) <= pb->len) {
DieterGraef 0:f9b6112278fe 347 MEMCPY(&pt, (u8_t*)pb->payload + off, sizeof(pt));
DieterGraef 0:f9b6112278fe 348 tag = ntohs(pt.tag);
DieterGraef 0:f9b6112278fe 349 len = ntohs(pt.len);
DieterGraef 0:f9b6112278fe 350 if (off + sizeof(pt) + len > pb->len) {
DieterGraef 0:f9b6112278fe 351 printf("pppoe: tag 0x%x len 0x%x is too long\n", tag, len);
DieterGraef 0:f9b6112278fe 352 goto done;
DieterGraef 0:f9b6112278fe 353 }
DieterGraef 0:f9b6112278fe 354 switch (tag) {
DieterGraef 0:f9b6112278fe 355 case PPPOE_TAG_EOL:
DieterGraef 0:f9b6112278fe 356 goto breakbreak;
DieterGraef 0:f9b6112278fe 357 case PPPOE_TAG_SNAME:
DieterGraef 0:f9b6112278fe 358 break; /* ignored */
DieterGraef 0:f9b6112278fe 359 case PPPOE_TAG_ACNAME:
DieterGraef 0:f9b6112278fe 360 break; /* ignored */
DieterGraef 0:f9b6112278fe 361 case PPPOE_TAG_HUNIQUE:
DieterGraef 0:f9b6112278fe 362 if (sc != NULL) {
DieterGraef 0:f9b6112278fe 363 break;
DieterGraef 0:f9b6112278fe 364 }
DieterGraef 0:f9b6112278fe 365 #ifdef PPPOE_SERVER
DieterGraef 0:f9b6112278fe 366 hunique = (u8_t*)pb->payload + off + sizeof(pt);
DieterGraef 0:f9b6112278fe 367 hunique_len = len;
DieterGraef 0:f9b6112278fe 368 #endif
DieterGraef 0:f9b6112278fe 369 sc = pppoe_find_softc_by_hunique((u8_t*)pb->payload + off + sizeof(pt), len, netif);
DieterGraef 0:f9b6112278fe 370 if (sc != NULL) {
DieterGraef 0:f9b6112278fe 371 snprintf(devname, sizeof(devname), "%c%c%"U16_F, sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
DieterGraef 0:f9b6112278fe 372 }
DieterGraef 0:f9b6112278fe 373 break;
DieterGraef 0:f9b6112278fe 374 case PPPOE_TAG_ACCOOKIE:
DieterGraef 0:f9b6112278fe 375 if (ac_cookie == NULL) {
DieterGraef 0:f9b6112278fe 376 ac_cookie = (u8_t*)pb->payload + off + sizeof(pt);
DieterGraef 0:f9b6112278fe 377 ac_cookie_len = len;
DieterGraef 0:f9b6112278fe 378 }
DieterGraef 0:f9b6112278fe 379 break;
DieterGraef 0:f9b6112278fe 380 case PPPOE_TAG_SNAME_ERR:
DieterGraef 0:f9b6112278fe 381 err_msg = "SERVICE NAME ERROR";
DieterGraef 0:f9b6112278fe 382 errortag = 1;
DieterGraef 0:f9b6112278fe 383 break;
DieterGraef 0:f9b6112278fe 384 case PPPOE_TAG_ACSYS_ERR:
DieterGraef 0:f9b6112278fe 385 err_msg = "AC SYSTEM ERROR";
DieterGraef 0:f9b6112278fe 386 errortag = 1;
DieterGraef 0:f9b6112278fe 387 break;
DieterGraef 0:f9b6112278fe 388 case PPPOE_TAG_GENERIC_ERR:
DieterGraef 0:f9b6112278fe 389 err_msg = "GENERIC ERROR";
DieterGraef 0:f9b6112278fe 390 errortag = 1;
DieterGraef 0:f9b6112278fe 391 break;
DieterGraef 0:f9b6112278fe 392 }
DieterGraef 0:f9b6112278fe 393 if (err_msg) {
DieterGraef 0:f9b6112278fe 394 if (errortag && len) {
DieterGraef 0:f9b6112278fe 395 u16_t error_len = LWIP_MIN(len, sizeof(pppoe_error_tmp)-1);
DieterGraef 0:f9b6112278fe 396 strncpy(pppoe_error_tmp, (char*)pb->payload + off + sizeof(pt), error_len);
DieterGraef 0:f9b6112278fe 397 pppoe_error_tmp[error_len-1] = '\0';
DieterGraef 0:f9b6112278fe 398 printf("%s: %s: %s\n", devname, err_msg, pppoe_error_tmp);
DieterGraef 0:f9b6112278fe 399 } else {
DieterGraef 0:f9b6112278fe 400 printf("%s: %s\n", devname, err_msg);
DieterGraef 0:f9b6112278fe 401 }
DieterGraef 0:f9b6112278fe 402 if (errortag) {
DieterGraef 0:f9b6112278fe 403 goto done;
DieterGraef 0:f9b6112278fe 404 }
DieterGraef 0:f9b6112278fe 405 }
DieterGraef 0:f9b6112278fe 406 off += sizeof(pt) + len;
DieterGraef 0:f9b6112278fe 407 }
DieterGraef 0:f9b6112278fe 408
DieterGraef 0:f9b6112278fe 409 breakbreak:;
DieterGraef 0:f9b6112278fe 410 switch (ph->code) {
DieterGraef 0:f9b6112278fe 411 case PPPOE_CODE_PADI:
DieterGraef 0:f9b6112278fe 412 #ifdef PPPOE_SERVER
DieterGraef 0:f9b6112278fe 413 /*
DieterGraef 0:f9b6112278fe 414 * got service name, concentrator name, and/or host unique.
DieterGraef 0:f9b6112278fe 415 * ignore if we have no interfaces with IFF_PASSIVE|IFF_UP.
DieterGraef 0:f9b6112278fe 416 */
DieterGraef 0:f9b6112278fe 417 if (LIST_EMPTY(&pppoe_softc_list)) {
DieterGraef 0:f9b6112278fe 418 goto done;
DieterGraef 0:f9b6112278fe 419 }
DieterGraef 0:f9b6112278fe 420 LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
DieterGraef 0:f9b6112278fe 421 if (!(sc->sc_sppp.pp_if.if_flags & IFF_UP)) {
DieterGraef 0:f9b6112278fe 422 continue;
DieterGraef 0:f9b6112278fe 423 }
DieterGraef 0:f9b6112278fe 424 if (!(sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
DieterGraef 0:f9b6112278fe 425 continue;
DieterGraef 0:f9b6112278fe 426 }
DieterGraef 0:f9b6112278fe 427 if (sc->sc_state == PPPOE_STATE_INITIAL) {
DieterGraef 0:f9b6112278fe 428 break;
DieterGraef 0:f9b6112278fe 429 }
DieterGraef 0:f9b6112278fe 430 }
DieterGraef 0:f9b6112278fe 431 if (sc == NULL) {
DieterGraef 0:f9b6112278fe 432 /* printf("pppoe: free passive interface is not found\n"); */
DieterGraef 0:f9b6112278fe 433 goto done;
DieterGraef 0:f9b6112278fe 434 }
DieterGraef 0:f9b6112278fe 435 if (hunique) {
DieterGraef 0:f9b6112278fe 436 if (sc->sc_hunique) {
DieterGraef 0:f9b6112278fe 437 mem_free(sc->sc_hunique);
DieterGraef 0:f9b6112278fe 438 }
DieterGraef 0:f9b6112278fe 439 sc->sc_hunique = mem_malloc(hunique_len);
DieterGraef 0:f9b6112278fe 440 if (sc->sc_hunique == NULL) {
DieterGraef 0:f9b6112278fe 441 goto done;
DieterGraef 0:f9b6112278fe 442 }
DieterGraef 0:f9b6112278fe 443 sc->sc_hunique_len = hunique_len;
DieterGraef 0:f9b6112278fe 444 MEMCPY(sc->sc_hunique, hunique, hunique_len);
DieterGraef 0:f9b6112278fe 445 }
DieterGraef 0:f9b6112278fe 446 MEMCPY(&sc->sc_dest, eh->ether_shost, sizeof sc->sc_dest);
DieterGraef 0:f9b6112278fe 447 sc->sc_state = PPPOE_STATE_PADO_SENT;
DieterGraef 0:f9b6112278fe 448 pppoe_send_pado(sc);
DieterGraef 0:f9b6112278fe 449 break;
DieterGraef 0:f9b6112278fe 450 #endif /* PPPOE_SERVER */
DieterGraef 0:f9b6112278fe 451 case PPPOE_CODE_PADR:
DieterGraef 0:f9b6112278fe 452 #ifdef PPPOE_SERVER
DieterGraef 0:f9b6112278fe 453 /*
DieterGraef 0:f9b6112278fe 454 * get sc from ac_cookie if IFF_PASSIVE
DieterGraef 0:f9b6112278fe 455 */
DieterGraef 0:f9b6112278fe 456 if (ac_cookie == NULL) {
DieterGraef 0:f9b6112278fe 457 /* be quiet if there is not a single pppoe instance */
DieterGraef 0:f9b6112278fe 458 printf("pppoe: received PADR but not includes ac_cookie\n");
DieterGraef 0:f9b6112278fe 459 goto done;
DieterGraef 0:f9b6112278fe 460 }
DieterGraef 0:f9b6112278fe 461 sc = pppoe_find_softc_by_hunique(ac_cookie, ac_cookie_len, netif);
DieterGraef 0:f9b6112278fe 462 if (sc == NULL) {
DieterGraef 0:f9b6112278fe 463 /* be quiet if there is not a single pppoe instance */
DieterGraef 0:f9b6112278fe 464 if (!LIST_EMPTY(&pppoe_softc_list)) {
DieterGraef 0:f9b6112278fe 465 printf("pppoe: received PADR but could not find request for it\n");
DieterGraef 0:f9b6112278fe 466 }
DieterGraef 0:f9b6112278fe 467 goto done;
DieterGraef 0:f9b6112278fe 468 }
DieterGraef 0:f9b6112278fe 469 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
DieterGraef 0:f9b6112278fe 470 printf("%c%c%"U16_F": received unexpected PADR\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
DieterGraef 0:f9b6112278fe 471 goto done;
DieterGraef 0:f9b6112278fe 472 }
DieterGraef 0:f9b6112278fe 473 if (hunique) {
DieterGraef 0:f9b6112278fe 474 if (sc->sc_hunique) {
DieterGraef 0:f9b6112278fe 475 mem_free(sc->sc_hunique);
DieterGraef 0:f9b6112278fe 476 }
DieterGraef 0:f9b6112278fe 477 sc->sc_hunique = mem_malloc(hunique_len);
DieterGraef 0:f9b6112278fe 478 if (sc->sc_hunique == NULL) {
DieterGraef 0:f9b6112278fe 479 goto done;
DieterGraef 0:f9b6112278fe 480 }
DieterGraef 0:f9b6112278fe 481 sc->sc_hunique_len = hunique_len;
DieterGraef 0:f9b6112278fe 482 MEMCPY(sc->sc_hunique, hunique, hunique_len);
DieterGraef 0:f9b6112278fe 483 }
DieterGraef 0:f9b6112278fe 484 pppoe_send_pads(sc);
DieterGraef 0:f9b6112278fe 485 sc->sc_state = PPPOE_STATE_SESSION;
DieterGraef 0:f9b6112278fe 486 pppoe_linkstatus_up(sc); /* notify upper layers */
DieterGraef 0:f9b6112278fe 487 break;
DieterGraef 0:f9b6112278fe 488 #else
DieterGraef 0:f9b6112278fe 489 /* ignore, we are no access concentrator */
DieterGraef 0:f9b6112278fe 490 goto done;
DieterGraef 0:f9b6112278fe 491 #endif /* PPPOE_SERVER */
DieterGraef 0:f9b6112278fe 492 case PPPOE_CODE_PADO:
DieterGraef 0:f9b6112278fe 493 if (sc == NULL) {
DieterGraef 0:f9b6112278fe 494 /* be quiet if there is not a single pppoe instance */
DieterGraef 0:f9b6112278fe 495 if (pppoe_softc_list != NULL) {
DieterGraef 0:f9b6112278fe 496 printf("pppoe: received PADO but could not find request for it\n");
DieterGraef 0:f9b6112278fe 497 }
DieterGraef 0:f9b6112278fe 498 goto done;
DieterGraef 0:f9b6112278fe 499 }
DieterGraef 0:f9b6112278fe 500 if (sc->sc_state != PPPOE_STATE_PADI_SENT) {
DieterGraef 0:f9b6112278fe 501 printf("%c%c%"U16_F": received unexpected PADO\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
DieterGraef 0:f9b6112278fe 502 goto done;
DieterGraef 0:f9b6112278fe 503 }
DieterGraef 0:f9b6112278fe 504 if (ac_cookie) {
DieterGraef 0:f9b6112278fe 505 sc->sc_ac_cookie_len = ac_cookie_len;
DieterGraef 0:f9b6112278fe 506 MEMCPY(sc->sc_ac_cookie, ac_cookie, ac_cookie_len);
DieterGraef 0:f9b6112278fe 507 }
DieterGraef 0:f9b6112278fe 508 MEMCPY(&sc->sc_dest, ethhdr->src.addr, sizeof(sc->sc_dest.addr));
DieterGraef 0:f9b6112278fe 509 sys_untimeout(pppoe_timeout, sc);
DieterGraef 0:f9b6112278fe 510 sc->sc_padr_retried = 0;
DieterGraef 0:f9b6112278fe 511 sc->sc_state = PPPOE_STATE_PADR_SENT;
DieterGraef 0:f9b6112278fe 512 if ((err = pppoe_send_padr(sc)) != 0) {
DieterGraef 0:f9b6112278fe 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));
DieterGraef 0:f9b6112278fe 514 }
DieterGraef 0:f9b6112278fe 515 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
DieterGraef 0:f9b6112278fe 516 break;
DieterGraef 0:f9b6112278fe 517 case PPPOE_CODE_PADS:
DieterGraef 0:f9b6112278fe 518 if (sc == NULL) {
DieterGraef 0:f9b6112278fe 519 goto done;
DieterGraef 0:f9b6112278fe 520 }
DieterGraef 0:f9b6112278fe 521 sc->sc_session = session;
DieterGraef 0:f9b6112278fe 522 sys_untimeout(pppoe_timeout, sc);
DieterGraef 0:f9b6112278fe 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));
DieterGraef 0:f9b6112278fe 524 sc->sc_state = PPPOE_STATE_SESSION;
DieterGraef 0:f9b6112278fe 525 pppoe_linkstatus_up(sc); /* notify upper layers */
DieterGraef 0:f9b6112278fe 526 break;
DieterGraef 0:f9b6112278fe 527 case PPPOE_CODE_PADT:
DieterGraef 0:f9b6112278fe 528 if (sc == NULL) {
DieterGraef 0:f9b6112278fe 529 goto done;
DieterGraef 0:f9b6112278fe 530 }
DieterGraef 0:f9b6112278fe 531 pppoe_clear_softc(sc, "received PADT");
DieterGraef 0:f9b6112278fe 532 break;
DieterGraef 0:f9b6112278fe 533 default:
DieterGraef 0:f9b6112278fe 534 if(sc) {
DieterGraef 0:f9b6112278fe 535 printf("%c%c%"U16_F": unknown code (0x%"X16_F") session = 0x%"X16_F"\n",
DieterGraef 0:f9b6112278fe 536 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
DieterGraef 0:f9b6112278fe 537 (u16_t)ph->code, session);
DieterGraef 0:f9b6112278fe 538 } else {
DieterGraef 0:f9b6112278fe 539 printf("pppoe: unknown code (0x%"X16_F") session = 0x%"X16_F"\n", (u16_t)ph->code, session);
DieterGraef 0:f9b6112278fe 540 }
DieterGraef 0:f9b6112278fe 541 break;
DieterGraef 0:f9b6112278fe 542 }
DieterGraef 0:f9b6112278fe 543
DieterGraef 0:f9b6112278fe 544 done:
DieterGraef 0:f9b6112278fe 545 pbuf_free(pb);
DieterGraef 0:f9b6112278fe 546 return;
DieterGraef 0:f9b6112278fe 547 }
DieterGraef 0:f9b6112278fe 548
DieterGraef 0:f9b6112278fe 549 void
DieterGraef 0:f9b6112278fe 550 pppoe_disc_input(struct netif *netif, struct pbuf *p)
DieterGraef 0:f9b6112278fe 551 {
DieterGraef 0:f9b6112278fe 552 /* avoid error messages if there is not a single pppoe instance */
DieterGraef 0:f9b6112278fe 553 if (pppoe_softc_list != NULL) {
DieterGraef 0:f9b6112278fe 554 pppoe_dispatch_disc_pkt(netif, p);
DieterGraef 0:f9b6112278fe 555 } else {
DieterGraef 0:f9b6112278fe 556 pbuf_free(p);
DieterGraef 0:f9b6112278fe 557 }
DieterGraef 0:f9b6112278fe 558 }
DieterGraef 0:f9b6112278fe 559
DieterGraef 0:f9b6112278fe 560 void
DieterGraef 0:f9b6112278fe 561 pppoe_data_input(struct netif *netif, struct pbuf *pb)
DieterGraef 0:f9b6112278fe 562 {
DieterGraef 0:f9b6112278fe 563 u16_t session, plen;
DieterGraef 0:f9b6112278fe 564 struct pppoe_softc *sc;
DieterGraef 0:f9b6112278fe 565 struct pppoehdr *ph;
DieterGraef 0:f9b6112278fe 566 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
DieterGraef 0:f9b6112278fe 567 u8_t shost[ETHER_ADDR_LEN];
DieterGraef 0:f9b6112278fe 568 #endif
DieterGraef 0:f9b6112278fe 569
DieterGraef 0:f9b6112278fe 570 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
DieterGraef 0:f9b6112278fe 571 MEMCPY(shost, ((struct eth_hdr *)pb->payload)->src.addr, sizeof(shost));
DieterGraef 0:f9b6112278fe 572 #endif
DieterGraef 0:f9b6112278fe 573 if (pbuf_header(pb, -(int)sizeof(struct eth_hdr)) != 0) {
DieterGraef 0:f9b6112278fe 574 /* bail out */
DieterGraef 0:f9b6112278fe 575 PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header failed\n"));
DieterGraef 0:f9b6112278fe 576 LINK_STATS_INC(link.lenerr);
DieterGraef 0:f9b6112278fe 577 goto drop;
DieterGraef 0:f9b6112278fe 578 }
DieterGraef 0:f9b6112278fe 579
DieterGraef 0:f9b6112278fe 580 pb = pppSingleBuf (pb);
DieterGraef 0:f9b6112278fe 581
DieterGraef 0:f9b6112278fe 582 if (pb->len <= PPPOE_HEADERLEN) {
DieterGraef 0:f9b6112278fe 583 printf("pppoe (data): dropping too short packet: %d bytes\n", pb->len);
DieterGraef 0:f9b6112278fe 584 goto drop;
DieterGraef 0:f9b6112278fe 585 }
DieterGraef 0:f9b6112278fe 586
DieterGraef 0:f9b6112278fe 587 if (pb->len < sizeof(*ph)) {
DieterGraef 0:f9b6112278fe 588 printf("pppoe_data_input: could not get PPPoE header\n");
DieterGraef 0:f9b6112278fe 589 goto drop;
DieterGraef 0:f9b6112278fe 590 }
DieterGraef 0:f9b6112278fe 591 ph = (struct pppoehdr *)pb->payload;
DieterGraef 0:f9b6112278fe 592
DieterGraef 0:f9b6112278fe 593 if (ph->vertype != PPPOE_VERTYPE) {
DieterGraef 0:f9b6112278fe 594 printf("pppoe (data): unknown version/type packet: 0x%x\n", ph->vertype);
DieterGraef 0:f9b6112278fe 595 goto drop;
DieterGraef 0:f9b6112278fe 596 }
DieterGraef 0:f9b6112278fe 597 if (ph->code != 0) {
DieterGraef 0:f9b6112278fe 598 goto drop;
DieterGraef 0:f9b6112278fe 599 }
DieterGraef 0:f9b6112278fe 600
DieterGraef 0:f9b6112278fe 601 session = ntohs(ph->session);
DieterGraef 0:f9b6112278fe 602 sc = pppoe_find_softc_by_session(session, netif);
DieterGraef 0:f9b6112278fe 603 if (sc == NULL) {
DieterGraef 0:f9b6112278fe 604 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
DieterGraef 0:f9b6112278fe 605 printf("pppoe: input for unknown session 0x%x, sending PADT\n", session);
DieterGraef 0:f9b6112278fe 606 pppoe_send_padt(netif, session, shost);
DieterGraef 0:f9b6112278fe 607 #endif
DieterGraef 0:f9b6112278fe 608 goto drop;
DieterGraef 0:f9b6112278fe 609 }
DieterGraef 0:f9b6112278fe 610
DieterGraef 0:f9b6112278fe 611 plen = ntohs(ph->plen);
DieterGraef 0:f9b6112278fe 612
DieterGraef 0:f9b6112278fe 613 if (pbuf_header(pb, -(int)(PPPOE_HEADERLEN)) != 0) {
DieterGraef 0:f9b6112278fe 614 /* bail out */
DieterGraef 0:f9b6112278fe 615 PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header PPPOE_HEADERLEN failed\n"));
DieterGraef 0:f9b6112278fe 616 LINK_STATS_INC(link.lenerr);
DieterGraef 0:f9b6112278fe 617 goto drop;
DieterGraef 0:f9b6112278fe 618 }
DieterGraef 0:f9b6112278fe 619
DieterGraef 0:f9b6112278fe 620 PPPDEBUG(LOG_DEBUG, ("pppoe_data_input: %c%c%"U16_F": pkthdr.len=%d, pppoe.len=%d\n",
DieterGraef 0:f9b6112278fe 621 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
DieterGraef 0:f9b6112278fe 622 pb->len, plen));
DieterGraef 0:f9b6112278fe 623
DieterGraef 0:f9b6112278fe 624 if (pb->len < plen) {
DieterGraef 0:f9b6112278fe 625 goto drop;
DieterGraef 0:f9b6112278fe 626 }
DieterGraef 0:f9b6112278fe 627
DieterGraef 0:f9b6112278fe 628 pppInProcOverEthernet(sc->sc_pd, pb);
DieterGraef 0:f9b6112278fe 629
DieterGraef 0:f9b6112278fe 630 return;
DieterGraef 0:f9b6112278fe 631
DieterGraef 0:f9b6112278fe 632 drop:
DieterGraef 0:f9b6112278fe 633 pbuf_free(pb);
DieterGraef 0:f9b6112278fe 634 }
DieterGraef 0:f9b6112278fe 635
DieterGraef 0:f9b6112278fe 636 static err_t
DieterGraef 0:f9b6112278fe 637 pppoe_output(struct pppoe_softc *sc, struct pbuf *pb)
DieterGraef 0:f9b6112278fe 638 {
DieterGraef 0:f9b6112278fe 639 struct eth_hdr *ethhdr;
DieterGraef 0:f9b6112278fe 640 u16_t etype;
DieterGraef 0:f9b6112278fe 641 err_t res;
DieterGraef 0:f9b6112278fe 642
DieterGraef 0:f9b6112278fe 643 if (!sc->sc_ethif) {
DieterGraef 0:f9b6112278fe 644 pbuf_free(pb);
DieterGraef 0:f9b6112278fe 645 return ERR_IF;
DieterGraef 0:f9b6112278fe 646 }
DieterGraef 0:f9b6112278fe 647
DieterGraef 0:f9b6112278fe 648 ethhdr = (struct eth_hdr *)pb->payload;
DieterGraef 0:f9b6112278fe 649 etype = sc->sc_state == PPPOE_STATE_SESSION ? ETHTYPE_PPPOE : ETHTYPE_PPPOEDISC;
DieterGraef 0:f9b6112278fe 650 ethhdr->type = htons(etype);
DieterGraef 0:f9b6112278fe 651 MEMCPY(ethhdr->dest.addr, sc->sc_dest.addr, sizeof(ethhdr->dest.addr));
DieterGraef 0:f9b6112278fe 652 MEMCPY(ethhdr->src.addr, ((struct eth_addr *)sc->sc_ethif->hwaddr)->addr, sizeof(ethhdr->src.addr));
DieterGraef 0:f9b6112278fe 653
DieterGraef 0:f9b6112278fe 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",
DieterGraef 0:f9b6112278fe 655 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, etype,
DieterGraef 0:f9b6112278fe 656 sc->sc_state, sc->sc_session,
DieterGraef 0:f9b6112278fe 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],
DieterGraef 0:f9b6112278fe 658 pb->tot_len));
DieterGraef 0:f9b6112278fe 659
DieterGraef 0:f9b6112278fe 660 res = sc->sc_ethif->linkoutput(sc->sc_ethif, pb);
DieterGraef 0:f9b6112278fe 661
DieterGraef 0:f9b6112278fe 662 pbuf_free(pb);
DieterGraef 0:f9b6112278fe 663
DieterGraef 0:f9b6112278fe 664 return res;
DieterGraef 0:f9b6112278fe 665 }
DieterGraef 0:f9b6112278fe 666
DieterGraef 0:f9b6112278fe 667 static err_t
DieterGraef 0:f9b6112278fe 668 pppoe_send_padi(struct pppoe_softc *sc)
DieterGraef 0:f9b6112278fe 669 {
DieterGraef 0:f9b6112278fe 670 struct pbuf *pb;
DieterGraef 0:f9b6112278fe 671 u8_t *p;
DieterGraef 0:f9b6112278fe 672 int len;
DieterGraef 0:f9b6112278fe 673 #ifdef PPPOE_TODO
DieterGraef 0:f9b6112278fe 674 int l1 = 0, l2 = 0; /* XXX: gcc */
DieterGraef 0:f9b6112278fe 675 #endif /* PPPOE_TODO */
DieterGraef 0:f9b6112278fe 676
DieterGraef 0:f9b6112278fe 677 if (sc->sc_state >PPPOE_STATE_PADI_SENT) {
DieterGraef 0:f9b6112278fe 678 PPPDEBUG(LOG_ERR, ("ERROR: pppoe_send_padi in state %d", sc->sc_state));
DieterGraef 0:f9b6112278fe 679 }
DieterGraef 0:f9b6112278fe 680
DieterGraef 0:f9b6112278fe 681 /* calculate length of frame (excluding ethernet header + pppoe header) */
DieterGraef 0:f9b6112278fe 682 len = 2 + 2 + 2 + 2 + sizeof sc; /* service name tag is required, host unique is send too */
DieterGraef 0:f9b6112278fe 683 #ifdef PPPOE_TODO
DieterGraef 0:f9b6112278fe 684 if (sc->sc_service_name != NULL) {
DieterGraef 0:f9b6112278fe 685 l1 = (int)strlen(sc->sc_service_name);
DieterGraef 0:f9b6112278fe 686 len += l1;
DieterGraef 0:f9b6112278fe 687 }
DieterGraef 0:f9b6112278fe 688 if (sc->sc_concentrator_name != NULL) {
DieterGraef 0:f9b6112278fe 689 l2 = (int)strlen(sc->sc_concentrator_name);
DieterGraef 0:f9b6112278fe 690 len += 2 + 2 + l2;
DieterGraef 0:f9b6112278fe 691 }
DieterGraef 0:f9b6112278fe 692 #endif /* PPPOE_TODO */
DieterGraef 0:f9b6112278fe 693 LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
DieterGraef 0:f9b6112278fe 694 sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
DieterGraef 0:f9b6112278fe 695
DieterGraef 0:f9b6112278fe 696 /* allocate a buffer */
DieterGraef 0:f9b6112278fe 697 pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
DieterGraef 0:f9b6112278fe 698 if (!pb) {
DieterGraef 0:f9b6112278fe 699 return ERR_MEM;
DieterGraef 0:f9b6112278fe 700 }
DieterGraef 0:f9b6112278fe 701 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
DieterGraef 0:f9b6112278fe 702
DieterGraef 0:f9b6112278fe 703 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
DieterGraef 0:f9b6112278fe 704 /* fill in pkt */
DieterGraef 0:f9b6112278fe 705 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADI, 0, (u16_t)len);
DieterGraef 0:f9b6112278fe 706 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
DieterGraef 0:f9b6112278fe 707 #ifdef PPPOE_TODO
DieterGraef 0:f9b6112278fe 708 if (sc->sc_service_name != NULL) {
DieterGraef 0:f9b6112278fe 709 PPPOE_ADD_16(p, l1);
DieterGraef 0:f9b6112278fe 710 MEMCPY(p, sc->sc_service_name, l1);
DieterGraef 0:f9b6112278fe 711 p += l1;
DieterGraef 0:f9b6112278fe 712 } else
DieterGraef 0:f9b6112278fe 713 #endif /* PPPOE_TODO */
DieterGraef 0:f9b6112278fe 714 {
DieterGraef 0:f9b6112278fe 715 PPPOE_ADD_16(p, 0);
DieterGraef 0:f9b6112278fe 716 }
DieterGraef 0:f9b6112278fe 717 #ifdef PPPOE_TODO
DieterGraef 0:f9b6112278fe 718 if (sc->sc_concentrator_name != NULL) {
DieterGraef 0:f9b6112278fe 719 PPPOE_ADD_16(p, PPPOE_TAG_ACNAME);
DieterGraef 0:f9b6112278fe 720 PPPOE_ADD_16(p, l2);
DieterGraef 0:f9b6112278fe 721 MEMCPY(p, sc->sc_concentrator_name, l2);
DieterGraef 0:f9b6112278fe 722 p += l2;
DieterGraef 0:f9b6112278fe 723 }
DieterGraef 0:f9b6112278fe 724 #endif /* PPPOE_TODO */
DieterGraef 0:f9b6112278fe 725 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
DieterGraef 0:f9b6112278fe 726 PPPOE_ADD_16(p, sizeof(sc));
DieterGraef 0:f9b6112278fe 727 MEMCPY(p, &sc, sizeof sc);
DieterGraef 0:f9b6112278fe 728
DieterGraef 0:f9b6112278fe 729 /* send pkt */
DieterGraef 0:f9b6112278fe 730 return pppoe_output(sc, pb);
DieterGraef 0:f9b6112278fe 731 }
DieterGraef 0:f9b6112278fe 732
DieterGraef 0:f9b6112278fe 733 static void
DieterGraef 0:f9b6112278fe 734 pppoe_timeout(void *arg)
DieterGraef 0:f9b6112278fe 735 {
DieterGraef 0:f9b6112278fe 736 int retry_wait, err;
DieterGraef 0:f9b6112278fe 737 struct pppoe_softc *sc = (struct pppoe_softc*)arg;
DieterGraef 0:f9b6112278fe 738
DieterGraef 0:f9b6112278fe 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));
DieterGraef 0:f9b6112278fe 740
DieterGraef 0:f9b6112278fe 741 switch (sc->sc_state) {
DieterGraef 0:f9b6112278fe 742 case PPPOE_STATE_PADI_SENT:
DieterGraef 0:f9b6112278fe 743 /*
DieterGraef 0:f9b6112278fe 744 * We have two basic ways of retrying:
DieterGraef 0:f9b6112278fe 745 * - Quick retry mode: try a few times in short sequence
DieterGraef 0:f9b6112278fe 746 * - Slow retry mode: we already had a connection successfully
DieterGraef 0:f9b6112278fe 747 * established and will try infinitely (without user
DieterGraef 0:f9b6112278fe 748 * intervention)
DieterGraef 0:f9b6112278fe 749 * We only enter slow retry mode if IFF_LINK1 (aka autodial)
DieterGraef 0:f9b6112278fe 750 * is not set.
DieterGraef 0:f9b6112278fe 751 */
DieterGraef 0:f9b6112278fe 752
DieterGraef 0:f9b6112278fe 753 /* initialize for quick retry mode */
DieterGraef 0:f9b6112278fe 754 retry_wait = PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried);
DieterGraef 0:f9b6112278fe 755
DieterGraef 0:f9b6112278fe 756 sc->sc_padi_retried++;
DieterGraef 0:f9b6112278fe 757 if (sc->sc_padi_retried >= PPPOE_DISC_MAXPADI) {
DieterGraef 0:f9b6112278fe 758 #if 0
DieterGraef 0:f9b6112278fe 759 if ((sc->sc_sppp.pp_if.if_flags & IFF_LINK1) == 0) {
DieterGraef 0:f9b6112278fe 760 /* slow retry mode */
DieterGraef 0:f9b6112278fe 761 retry_wait = PPPOE_SLOW_RETRY;
DieterGraef 0:f9b6112278fe 762 } else
DieterGraef 0:f9b6112278fe 763 #endif
DieterGraef 0:f9b6112278fe 764 {
DieterGraef 0:f9b6112278fe 765 pppoe_abort_connect(sc);
DieterGraef 0:f9b6112278fe 766 return;
DieterGraef 0:f9b6112278fe 767 }
DieterGraef 0:f9b6112278fe 768 }
DieterGraef 0:f9b6112278fe 769 if ((err = pppoe_send_padi(sc)) != 0) {
DieterGraef 0:f9b6112278fe 770 sc->sc_padi_retried--;
DieterGraef 0:f9b6112278fe 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));
DieterGraef 0:f9b6112278fe 772 }
DieterGraef 0:f9b6112278fe 773 sys_timeout(retry_wait, pppoe_timeout, sc);
DieterGraef 0:f9b6112278fe 774 break;
DieterGraef 0:f9b6112278fe 775
DieterGraef 0:f9b6112278fe 776 case PPPOE_STATE_PADR_SENT:
DieterGraef 0:f9b6112278fe 777 sc->sc_padr_retried++;
DieterGraef 0:f9b6112278fe 778 if (sc->sc_padr_retried >= PPPOE_DISC_MAXPADR) {
DieterGraef 0:f9b6112278fe 779 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
DieterGraef 0:f9b6112278fe 780 sc->sc_state = PPPOE_STATE_PADI_SENT;
DieterGraef 0:f9b6112278fe 781 sc->sc_padr_retried = 0;
DieterGraef 0:f9b6112278fe 782 if ((err = pppoe_send_padi(sc)) != 0) {
DieterGraef 0:f9b6112278fe 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));
DieterGraef 0:f9b6112278fe 784 }
DieterGraef 0:f9b6112278fe 785 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried), pppoe_timeout, sc);
DieterGraef 0:f9b6112278fe 786 return;
DieterGraef 0:f9b6112278fe 787 }
DieterGraef 0:f9b6112278fe 788 if ((err = pppoe_send_padr(sc)) != 0) {
DieterGraef 0:f9b6112278fe 789 sc->sc_padr_retried--;
DieterGraef 0:f9b6112278fe 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));
DieterGraef 0:f9b6112278fe 791 }
DieterGraef 0:f9b6112278fe 792 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
DieterGraef 0:f9b6112278fe 793 break;
DieterGraef 0:f9b6112278fe 794 case PPPOE_STATE_CLOSING:
DieterGraef 0:f9b6112278fe 795 pppoe_do_disconnect(sc);
DieterGraef 0:f9b6112278fe 796 break;
DieterGraef 0:f9b6112278fe 797 default:
DieterGraef 0:f9b6112278fe 798 return; /* all done, work in peace */
DieterGraef 0:f9b6112278fe 799 }
DieterGraef 0:f9b6112278fe 800 }
DieterGraef 0:f9b6112278fe 801
DieterGraef 0:f9b6112278fe 802 /* Start a connection (i.e. initiate discovery phase) */
DieterGraef 0:f9b6112278fe 803 int
DieterGraef 0:f9b6112278fe 804 pppoe_connect(struct pppoe_softc *sc)
DieterGraef 0:f9b6112278fe 805 {
DieterGraef 0:f9b6112278fe 806 int err;
DieterGraef 0:f9b6112278fe 807
DieterGraef 0:f9b6112278fe 808 if (sc->sc_state != PPPOE_STATE_INITIAL) {
DieterGraef 0:f9b6112278fe 809 return EBUSY;
DieterGraef 0:f9b6112278fe 810 }
DieterGraef 0:f9b6112278fe 811
DieterGraef 0:f9b6112278fe 812 #ifdef PPPOE_SERVER
DieterGraef 0:f9b6112278fe 813 /* wait PADI if IFF_PASSIVE */
DieterGraef 0:f9b6112278fe 814 if ((sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
DieterGraef 0:f9b6112278fe 815 return 0;
DieterGraef 0:f9b6112278fe 816 }
DieterGraef 0:f9b6112278fe 817 #endif
DieterGraef 0:f9b6112278fe 818 /* save state, in case we fail to send PADI */
DieterGraef 0:f9b6112278fe 819 sc->sc_state = PPPOE_STATE_PADI_SENT;
DieterGraef 0:f9b6112278fe 820 sc->sc_padr_retried = 0;
DieterGraef 0:f9b6112278fe 821 err = pppoe_send_padi(sc);
DieterGraef 0:f9b6112278fe 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));
DieterGraef 0:f9b6112278fe 823 sys_timeout(PPPOE_DISC_TIMEOUT, pppoe_timeout, sc);
DieterGraef 0:f9b6112278fe 824 return err;
DieterGraef 0:f9b6112278fe 825 }
DieterGraef 0:f9b6112278fe 826
DieterGraef 0:f9b6112278fe 827 /* disconnect */
DieterGraef 0:f9b6112278fe 828 void
DieterGraef 0:f9b6112278fe 829 pppoe_disconnect(struct pppoe_softc *sc)
DieterGraef 0:f9b6112278fe 830 {
DieterGraef 0:f9b6112278fe 831 if (sc->sc_state < PPPOE_STATE_SESSION) {
DieterGraef 0:f9b6112278fe 832 return;
DieterGraef 0:f9b6112278fe 833 }
DieterGraef 0:f9b6112278fe 834 /*
DieterGraef 0:f9b6112278fe 835 * Do not call pppoe_disconnect here, the upper layer state
DieterGraef 0:f9b6112278fe 836 * machine gets confused by this. We must return from this
DieterGraef 0:f9b6112278fe 837 * function and defer disconnecting to the timeout handler.
DieterGraef 0:f9b6112278fe 838 */
DieterGraef 0:f9b6112278fe 839 sc->sc_state = PPPOE_STATE_CLOSING;
DieterGraef 0:f9b6112278fe 840 sys_timeout(20, pppoe_timeout, sc);
DieterGraef 0:f9b6112278fe 841 }
DieterGraef 0:f9b6112278fe 842
DieterGraef 0:f9b6112278fe 843 static int
DieterGraef 0:f9b6112278fe 844 pppoe_do_disconnect(struct pppoe_softc *sc)
DieterGraef 0:f9b6112278fe 845 {
DieterGraef 0:f9b6112278fe 846 int err;
DieterGraef 0:f9b6112278fe 847
DieterGraef 0:f9b6112278fe 848 if (sc->sc_state < PPPOE_STATE_SESSION) {
DieterGraef 0:f9b6112278fe 849 err = EBUSY;
DieterGraef 0:f9b6112278fe 850 } else {
DieterGraef 0:f9b6112278fe 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));
DieterGraef 0:f9b6112278fe 852 err = pppoe_send_padt(sc->sc_ethif, sc->sc_session, (const u8_t *)&sc->sc_dest);
DieterGraef 0:f9b6112278fe 853 }
DieterGraef 0:f9b6112278fe 854
DieterGraef 0:f9b6112278fe 855 /* cleanup softc */
DieterGraef 0:f9b6112278fe 856 sc->sc_state = PPPOE_STATE_INITIAL;
DieterGraef 0:f9b6112278fe 857 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
DieterGraef 0:f9b6112278fe 858 sc->sc_ac_cookie_len = 0;
DieterGraef 0:f9b6112278fe 859 #ifdef PPPOE_SERVER
DieterGraef 0:f9b6112278fe 860 if (sc->sc_hunique) {
DieterGraef 0:f9b6112278fe 861 mem_free(sc->sc_hunique);
DieterGraef 0:f9b6112278fe 862 sc->sc_hunique = NULL;
DieterGraef 0:f9b6112278fe 863 }
DieterGraef 0:f9b6112278fe 864 sc->sc_hunique_len = 0;
DieterGraef 0:f9b6112278fe 865 #endif
DieterGraef 0:f9b6112278fe 866 sc->sc_session = 0;
DieterGraef 0:f9b6112278fe 867
DieterGraef 0:f9b6112278fe 868 sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
DieterGraef 0:f9b6112278fe 869
DieterGraef 0:f9b6112278fe 870 return err;
DieterGraef 0:f9b6112278fe 871 }
DieterGraef 0:f9b6112278fe 872
DieterGraef 0:f9b6112278fe 873 /* Connection attempt aborted */
DieterGraef 0:f9b6112278fe 874 static void
DieterGraef 0:f9b6112278fe 875 pppoe_abort_connect(struct pppoe_softc *sc)
DieterGraef 0:f9b6112278fe 876 {
DieterGraef 0:f9b6112278fe 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);
DieterGraef 0:f9b6112278fe 878 sc->sc_state = PPPOE_STATE_CLOSING;
DieterGraef 0:f9b6112278fe 879
DieterGraef 0:f9b6112278fe 880 sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
DieterGraef 0:f9b6112278fe 881
DieterGraef 0:f9b6112278fe 882 /* clear connection state */
DieterGraef 0:f9b6112278fe 883 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
DieterGraef 0:f9b6112278fe 884 sc->sc_state = PPPOE_STATE_INITIAL;
DieterGraef 0:f9b6112278fe 885 }
DieterGraef 0:f9b6112278fe 886
DieterGraef 0:f9b6112278fe 887 /* Send a PADR packet */
DieterGraef 0:f9b6112278fe 888 static err_t
DieterGraef 0:f9b6112278fe 889 pppoe_send_padr(struct pppoe_softc *sc)
DieterGraef 0:f9b6112278fe 890 {
DieterGraef 0:f9b6112278fe 891 struct pbuf *pb;
DieterGraef 0:f9b6112278fe 892 u8_t *p;
DieterGraef 0:f9b6112278fe 893 size_t len;
DieterGraef 0:f9b6112278fe 894 #ifdef PPPOE_TODO
DieterGraef 0:f9b6112278fe 895 size_t l1 = 0; /* XXX: gcc */
DieterGraef 0:f9b6112278fe 896 #endif /* PPPOE_TODO */
DieterGraef 0:f9b6112278fe 897
DieterGraef 0:f9b6112278fe 898 if (sc->sc_state != PPPOE_STATE_PADR_SENT) {
DieterGraef 0:f9b6112278fe 899 return ERR_CONN;
DieterGraef 0:f9b6112278fe 900 }
DieterGraef 0:f9b6112278fe 901
DieterGraef 0:f9b6112278fe 902 len = 2 + 2 + 2 + 2 + sizeof(sc); /* service name, host unique */
DieterGraef 0:f9b6112278fe 903 #ifdef PPPOE_TODO
DieterGraef 0:f9b6112278fe 904 if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
DieterGraef 0:f9b6112278fe 905 l1 = strlen(sc->sc_service_name);
DieterGraef 0:f9b6112278fe 906 len += l1;
DieterGraef 0:f9b6112278fe 907 }
DieterGraef 0:f9b6112278fe 908 #endif /* PPPOE_TODO */
DieterGraef 0:f9b6112278fe 909 if (sc->sc_ac_cookie_len > 0) {
DieterGraef 0:f9b6112278fe 910 len += 2 + 2 + sc->sc_ac_cookie_len; /* AC cookie */
DieterGraef 0:f9b6112278fe 911 }
DieterGraef 0:f9b6112278fe 912 LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
DieterGraef 0:f9b6112278fe 913 sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
DieterGraef 0:f9b6112278fe 914 pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
DieterGraef 0:f9b6112278fe 915 if (!pb) {
DieterGraef 0:f9b6112278fe 916 return ERR_MEM;
DieterGraef 0:f9b6112278fe 917 }
DieterGraef 0:f9b6112278fe 918 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
DieterGraef 0:f9b6112278fe 919 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
DieterGraef 0:f9b6112278fe 920 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADR, 0, len);
DieterGraef 0:f9b6112278fe 921 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
DieterGraef 0:f9b6112278fe 922 #ifdef PPPOE_TODO
DieterGraef 0:f9b6112278fe 923 if (sc->sc_service_name != NULL) {
DieterGraef 0:f9b6112278fe 924 PPPOE_ADD_16(p, l1);
DieterGraef 0:f9b6112278fe 925 MEMCPY(p, sc->sc_service_name, l1);
DieterGraef 0:f9b6112278fe 926 p += l1;
DieterGraef 0:f9b6112278fe 927 } else
DieterGraef 0:f9b6112278fe 928 #endif /* PPPOE_TODO */
DieterGraef 0:f9b6112278fe 929 {
DieterGraef 0:f9b6112278fe 930 PPPOE_ADD_16(p, 0);
DieterGraef 0:f9b6112278fe 931 }
DieterGraef 0:f9b6112278fe 932 if (sc->sc_ac_cookie_len > 0) {
DieterGraef 0:f9b6112278fe 933 PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
DieterGraef 0:f9b6112278fe 934 PPPOE_ADD_16(p, sc->sc_ac_cookie_len);
DieterGraef 0:f9b6112278fe 935 MEMCPY(p, sc->sc_ac_cookie, sc->sc_ac_cookie_len);
DieterGraef 0:f9b6112278fe 936 p += sc->sc_ac_cookie_len;
DieterGraef 0:f9b6112278fe 937 }
DieterGraef 0:f9b6112278fe 938 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
DieterGraef 0:f9b6112278fe 939 PPPOE_ADD_16(p, sizeof(sc));
DieterGraef 0:f9b6112278fe 940 MEMCPY(p, &sc, sizeof sc);
DieterGraef 0:f9b6112278fe 941
DieterGraef 0:f9b6112278fe 942 return pppoe_output(sc, pb);
DieterGraef 0:f9b6112278fe 943 }
DieterGraef 0:f9b6112278fe 944
DieterGraef 0:f9b6112278fe 945 /* send a PADT packet */
DieterGraef 0:f9b6112278fe 946 static err_t
DieterGraef 0:f9b6112278fe 947 pppoe_send_padt(struct netif *outgoing_if, u_int session, const u8_t *dest)
DieterGraef 0:f9b6112278fe 948 {
DieterGraef 0:f9b6112278fe 949 struct pbuf *pb;
DieterGraef 0:f9b6112278fe 950 struct eth_hdr *ethhdr;
DieterGraef 0:f9b6112278fe 951 err_t res;
DieterGraef 0:f9b6112278fe 952 u8_t *p;
DieterGraef 0:f9b6112278fe 953
DieterGraef 0:f9b6112278fe 954 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN, PBUF_RAM);
DieterGraef 0:f9b6112278fe 955 if (!pb) {
DieterGraef 0:f9b6112278fe 956 return ERR_MEM;
DieterGraef 0:f9b6112278fe 957 }
DieterGraef 0:f9b6112278fe 958 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
DieterGraef 0:f9b6112278fe 959
DieterGraef 0:f9b6112278fe 960 ethhdr = (struct eth_hdr *)pb->payload;
DieterGraef 0:f9b6112278fe 961 ethhdr->type = PP_HTONS(ETHTYPE_PPPOEDISC);
DieterGraef 0:f9b6112278fe 962 MEMCPY(ethhdr->dest.addr, dest, sizeof(ethhdr->dest.addr));
DieterGraef 0:f9b6112278fe 963 MEMCPY(ethhdr->src.addr, ((struct eth_addr *)outgoing_if->hwaddr)->addr, sizeof(ethhdr->src.addr));
DieterGraef 0:f9b6112278fe 964
DieterGraef 0:f9b6112278fe 965 p = (u8_t*)(ethhdr + 1);
DieterGraef 0:f9b6112278fe 966 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADT, session, 0);
DieterGraef 0:f9b6112278fe 967
DieterGraef 0:f9b6112278fe 968 res = outgoing_if->linkoutput(outgoing_if, pb);
DieterGraef 0:f9b6112278fe 969
DieterGraef 0:f9b6112278fe 970 pbuf_free(pb);
DieterGraef 0:f9b6112278fe 971
DieterGraef 0:f9b6112278fe 972 return res;
DieterGraef 0:f9b6112278fe 973 }
DieterGraef 0:f9b6112278fe 974
DieterGraef 0:f9b6112278fe 975 #ifdef PPPOE_SERVER
DieterGraef 0:f9b6112278fe 976 static err_t
DieterGraef 0:f9b6112278fe 977 pppoe_send_pado(struct pppoe_softc *sc)
DieterGraef 0:f9b6112278fe 978 {
DieterGraef 0:f9b6112278fe 979 struct pbuf *pb;
DieterGraef 0:f9b6112278fe 980 u8_t *p;
DieterGraef 0:f9b6112278fe 981 size_t len;
DieterGraef 0:f9b6112278fe 982
DieterGraef 0:f9b6112278fe 983 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
DieterGraef 0:f9b6112278fe 984 return ERR_CONN;
DieterGraef 0:f9b6112278fe 985 }
DieterGraef 0:f9b6112278fe 986
DieterGraef 0:f9b6112278fe 987 /* calc length */
DieterGraef 0:f9b6112278fe 988 len = 0;
DieterGraef 0:f9b6112278fe 989 /* include ac_cookie */
DieterGraef 0:f9b6112278fe 990 len += 2 + 2 + sizeof(sc);
DieterGraef 0:f9b6112278fe 991 /* include hunique */
DieterGraef 0:f9b6112278fe 992 len += 2 + 2 + sc->sc_hunique_len;
DieterGraef 0:f9b6112278fe 993 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
DieterGraef 0:f9b6112278fe 994 if (!pb) {
DieterGraef 0:f9b6112278fe 995 return ERR_MEM;
DieterGraef 0:f9b6112278fe 996 }
DieterGraef 0:f9b6112278fe 997 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
DieterGraef 0:f9b6112278fe 998 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
DieterGraef 0:f9b6112278fe 999 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADO, 0, len);
DieterGraef 0:f9b6112278fe 1000 PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
DieterGraef 0:f9b6112278fe 1001 PPPOE_ADD_16(p, sizeof(sc));
DieterGraef 0:f9b6112278fe 1002 MEMCPY(p, &sc, sizeof(sc));
DieterGraef 0:f9b6112278fe 1003 p += sizeof(sc);
DieterGraef 0:f9b6112278fe 1004 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
DieterGraef 0:f9b6112278fe 1005 PPPOE_ADD_16(p, sc->sc_hunique_len);
DieterGraef 0:f9b6112278fe 1006 MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
DieterGraef 0:f9b6112278fe 1007 return pppoe_output(sc, pb);
DieterGraef 0:f9b6112278fe 1008 }
DieterGraef 0:f9b6112278fe 1009
DieterGraef 0:f9b6112278fe 1010 static err_t
DieterGraef 0:f9b6112278fe 1011 pppoe_send_pads(struct pppoe_softc *sc)
DieterGraef 0:f9b6112278fe 1012 {
DieterGraef 0:f9b6112278fe 1013 struct pbuf *pb;
DieterGraef 0:f9b6112278fe 1014 u8_t *p;
DieterGraef 0:f9b6112278fe 1015 size_t len, l1 = 0; /* XXX: gcc */
DieterGraef 0:f9b6112278fe 1016
DieterGraef 0:f9b6112278fe 1017 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
DieterGraef 0:f9b6112278fe 1018 return ERR_CONN;
DieterGraef 0:f9b6112278fe 1019 }
DieterGraef 0:f9b6112278fe 1020
DieterGraef 0:f9b6112278fe 1021 sc->sc_session = mono_time.tv_sec % 0xff + 1;
DieterGraef 0:f9b6112278fe 1022 /* calc length */
DieterGraef 0:f9b6112278fe 1023 len = 0;
DieterGraef 0:f9b6112278fe 1024 /* include hunique */
DieterGraef 0:f9b6112278fe 1025 len += 2 + 2 + 2 + 2 + sc->sc_hunique_len; /* service name, host unique*/
DieterGraef 0:f9b6112278fe 1026 if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
DieterGraef 0:f9b6112278fe 1027 l1 = strlen(sc->sc_service_name);
DieterGraef 0:f9b6112278fe 1028 len += l1;
DieterGraef 0:f9b6112278fe 1029 }
DieterGraef 0:f9b6112278fe 1030 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
DieterGraef 0:f9b6112278fe 1031 if (!pb) {
DieterGraef 0:f9b6112278fe 1032 return ERR_MEM;
DieterGraef 0:f9b6112278fe 1033 }
DieterGraef 0:f9b6112278fe 1034 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
DieterGraef 0:f9b6112278fe 1035 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
DieterGraef 0:f9b6112278fe 1036 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADS, sc->sc_session, len);
DieterGraef 0:f9b6112278fe 1037 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
DieterGraef 0:f9b6112278fe 1038 if (sc->sc_service_name != NULL) {
DieterGraef 0:f9b6112278fe 1039 PPPOE_ADD_16(p, l1);
DieterGraef 0:f9b6112278fe 1040 MEMCPY(p, sc->sc_service_name, l1);
DieterGraef 0:f9b6112278fe 1041 p += l1;
DieterGraef 0:f9b6112278fe 1042 } else {
DieterGraef 0:f9b6112278fe 1043 PPPOE_ADD_16(p, 0);
DieterGraef 0:f9b6112278fe 1044 }
DieterGraef 0:f9b6112278fe 1045 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
DieterGraef 0:f9b6112278fe 1046 PPPOE_ADD_16(p, sc->sc_hunique_len);
DieterGraef 0:f9b6112278fe 1047 MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
DieterGraef 0:f9b6112278fe 1048 return pppoe_output(sc, pb);
DieterGraef 0:f9b6112278fe 1049 }
DieterGraef 0:f9b6112278fe 1050 #endif
DieterGraef 0:f9b6112278fe 1051
DieterGraef 0:f9b6112278fe 1052 err_t
DieterGraef 0:f9b6112278fe 1053 pppoe_xmit(struct pppoe_softc *sc, struct pbuf *pb)
DieterGraef 0:f9b6112278fe 1054 {
DieterGraef 0:f9b6112278fe 1055 u8_t *p;
DieterGraef 0:f9b6112278fe 1056 size_t len;
DieterGraef 0:f9b6112278fe 1057
DieterGraef 0:f9b6112278fe 1058 /* are we ready to process data yet? */
DieterGraef 0:f9b6112278fe 1059 if (sc->sc_state < PPPOE_STATE_SESSION) {
DieterGraef 0:f9b6112278fe 1060 /*sppp_flush(&sc->sc_sppp.pp_if);*/
DieterGraef 0:f9b6112278fe 1061 pbuf_free(pb);
DieterGraef 0:f9b6112278fe 1062 return ERR_CONN;
DieterGraef 0:f9b6112278fe 1063 }
DieterGraef 0:f9b6112278fe 1064
DieterGraef 0:f9b6112278fe 1065 len = pb->tot_len;
DieterGraef 0:f9b6112278fe 1066
DieterGraef 0:f9b6112278fe 1067 /* make room for Ethernet header - should not fail */
DieterGraef 0:f9b6112278fe 1068 if (pbuf_header(pb, sizeof(struct eth_hdr) + PPPOE_HEADERLEN) != 0) {
DieterGraef 0:f9b6112278fe 1069 /* bail out */
DieterGraef 0:f9b6112278fe 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));
DieterGraef 0:f9b6112278fe 1071 LINK_STATS_INC(link.lenerr);
DieterGraef 0:f9b6112278fe 1072 pbuf_free(pb);
DieterGraef 0:f9b6112278fe 1073 return ERR_BUF;
DieterGraef 0:f9b6112278fe 1074 }
DieterGraef 0:f9b6112278fe 1075
DieterGraef 0:f9b6112278fe 1076 p = (u8_t*)pb->payload + sizeof(struct eth_hdr);
DieterGraef 0:f9b6112278fe 1077 PPPOE_ADD_HEADER(p, 0, sc->sc_session, len);
DieterGraef 0:f9b6112278fe 1078
DieterGraef 0:f9b6112278fe 1079 return pppoe_output(sc, pb);
DieterGraef 0:f9b6112278fe 1080 }
DieterGraef 0:f9b6112278fe 1081
DieterGraef 0:f9b6112278fe 1082 #if 0 /*def PFIL_HOOKS*/
DieterGraef 0:f9b6112278fe 1083 static int
DieterGraef 0:f9b6112278fe 1084 pppoe_ifattach_hook(void *arg, struct pbuf **mp, struct netif *ifp, int dir)
DieterGraef 0:f9b6112278fe 1085 {
DieterGraef 0:f9b6112278fe 1086 struct pppoe_softc *sc;
DieterGraef 0:f9b6112278fe 1087 int s;
DieterGraef 0:f9b6112278fe 1088
DieterGraef 0:f9b6112278fe 1089 if (mp != (struct pbuf **)PFIL_IFNET_DETACH) {
DieterGraef 0:f9b6112278fe 1090 return 0;
DieterGraef 0:f9b6112278fe 1091 }
DieterGraef 0:f9b6112278fe 1092
DieterGraef 0:f9b6112278fe 1093 LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
DieterGraef 0:f9b6112278fe 1094 if (sc->sc_ethif != ifp) {
DieterGraef 0:f9b6112278fe 1095 continue;
DieterGraef 0:f9b6112278fe 1096 }
DieterGraef 0:f9b6112278fe 1097 if (sc->sc_sppp.pp_if.if_flags & IFF_UP) {
DieterGraef 0:f9b6112278fe 1098 sc->sc_sppp.pp_if.if_flags &= ~(IFF_UP|IFF_RUNNING);
DieterGraef 0:f9b6112278fe 1099 printf("%c%c%"U16_F": ethernet interface detached, going down\n",
DieterGraef 0:f9b6112278fe 1100 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
DieterGraef 0:f9b6112278fe 1101 }
DieterGraef 0:f9b6112278fe 1102 sc->sc_ethif = NULL;
DieterGraef 0:f9b6112278fe 1103 pppoe_clear_softc(sc, "ethernet interface detached");
DieterGraef 0:f9b6112278fe 1104 }
DieterGraef 0:f9b6112278fe 1105
DieterGraef 0:f9b6112278fe 1106 return 0;
DieterGraef 0:f9b6112278fe 1107 }
DieterGraef 0:f9b6112278fe 1108 #endif
DieterGraef 0:f9b6112278fe 1109
DieterGraef 0:f9b6112278fe 1110 static void
DieterGraef 0:f9b6112278fe 1111 pppoe_clear_softc(struct pppoe_softc *sc, const char *message)
DieterGraef 0:f9b6112278fe 1112 {
DieterGraef 0:f9b6112278fe 1113 LWIP_UNUSED_ARG(message);
DieterGraef 0:f9b6112278fe 1114
DieterGraef 0:f9b6112278fe 1115 /* stop timer */
DieterGraef 0:f9b6112278fe 1116 sys_untimeout(pppoe_timeout, sc);
DieterGraef 0:f9b6112278fe 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));
DieterGraef 0:f9b6112278fe 1118
DieterGraef 0:f9b6112278fe 1119 /* fix our state */
DieterGraef 0:f9b6112278fe 1120 sc->sc_state = PPPOE_STATE_INITIAL;
DieterGraef 0:f9b6112278fe 1121
DieterGraef 0:f9b6112278fe 1122 /* notify upper layers */
DieterGraef 0:f9b6112278fe 1123 sc->sc_linkStatusCB(sc->sc_pd, 0);
DieterGraef 0:f9b6112278fe 1124
DieterGraef 0:f9b6112278fe 1125 /* clean up softc */
DieterGraef 0:f9b6112278fe 1126 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
DieterGraef 0:f9b6112278fe 1127 sc->sc_ac_cookie_len = 0;
DieterGraef 0:f9b6112278fe 1128 sc->sc_session = 0;
DieterGraef 0:f9b6112278fe 1129 }
DieterGraef 0:f9b6112278fe 1130
DieterGraef 0:f9b6112278fe 1131 #endif /* PPPOE_SUPPORT */
DieterGraef 0:f9b6112278fe 1132