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Dependencies:   NTPClient_NetServices mbed

NetServices/lwip/netif/ppp/ppp_oe.c@0:05ccbd4f84f1, 2013-12-02 (annotated)

Committer:
hendrikvincent
Date:
Mon Dec 02 09:01:23 2013 +0000
Revision:
0:05ccbd4f84f1
eerste programma;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hendrikvincent 0:05ccbd4f84f1 1 /*****************************************************************************
hendrikvincent 0:05ccbd4f84f1 2 * ppp_oe.c - PPP Over Ethernet implementation for lwIP.
hendrikvincent 0:05ccbd4f84f1 3 *
hendrikvincent 0:05ccbd4f84f1 4 * Copyright (c) 2006 by Marc Boucher, Services Informatiques (MBSI) inc.
hendrikvincent 0:05ccbd4f84f1 5 *
hendrikvincent 0:05ccbd4f84f1 6 * The authors hereby grant permission to use, copy, modify, distribute,
hendrikvincent 0:05ccbd4f84f1 7 * and license this software and its documentation for any purpose, provided
hendrikvincent 0:05ccbd4f84f1 8 * that existing copyright notices are retained in all copies and that this
hendrikvincent 0:05ccbd4f84f1 9 * notice and the following disclaimer are included verbatim in any
hendrikvincent 0:05ccbd4f84f1 10 * distributions. No written agreement, license, or royalty fee is required
hendrikvincent 0:05ccbd4f84f1 11 * for any of the authorized uses.
hendrikvincent 0:05ccbd4f84f1 12 *
hendrikvincent 0:05ccbd4f84f1 13 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
hendrikvincent 0:05ccbd4f84f1 14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
hendrikvincent 0:05ccbd4f84f1 15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
hendrikvincent 0:05ccbd4f84f1 16 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
hendrikvincent 0:05ccbd4f84f1 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
hendrikvincent 0:05ccbd4f84f1 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
hendrikvincent 0:05ccbd4f84f1 19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
hendrikvincent 0:05ccbd4f84f1 20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
hendrikvincent 0:05ccbd4f84f1 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
hendrikvincent 0:05ccbd4f84f1 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
hendrikvincent 0:05ccbd4f84f1 23 *
hendrikvincent 0:05ccbd4f84f1 24 ******************************************************************************
hendrikvincent 0:05ccbd4f84f1 25 * REVISION HISTORY
hendrikvincent 0:05ccbd4f84f1 26 *
hendrikvincent 0:05ccbd4f84f1 27 * 06-01-01 Marc Boucher <marc@mbsi.ca>
hendrikvincent 0:05ccbd4f84f1 28 * Ported to lwIP.
hendrikvincent 0:05ccbd4f84f1 29 *****************************************************************************/
hendrikvincent 0:05ccbd4f84f1 30
hendrikvincent 0:05ccbd4f84f1 31
hendrikvincent 0:05ccbd4f84f1 32
hendrikvincent 0:05ccbd4f84f1 33 /* based on NetBSD: if_pppoe.c,v 1.64 2006/01/31 23:50:15 martin Exp */
hendrikvincent 0:05ccbd4f84f1 34
hendrikvincent 0:05ccbd4f84f1 35 /*-
hendrikvincent 0:05ccbd4f84f1 36 * Copyright (c) 2002 The NetBSD Foundation, Inc.
hendrikvincent 0:05ccbd4f84f1 37 * All rights reserved.
hendrikvincent 0:05ccbd4f84f1 38 *
hendrikvincent 0:05ccbd4f84f1 39 * This code is derived from software contributed to The NetBSD Foundation
hendrikvincent 0:05ccbd4f84f1 40 * by Martin Husemann <martin@NetBSD.org>.
hendrikvincent 0:05ccbd4f84f1 41 *
hendrikvincent 0:05ccbd4f84f1 42 * Redistribution and use in source and binary forms, with or without
hendrikvincent 0:05ccbd4f84f1 43 * modification, are permitted provided that the following conditions
hendrikvincent 0:05ccbd4f84f1 44 * are met:
hendrikvincent 0:05ccbd4f84f1 45 * 1. Redistributions of source code must retain the above copyright
hendrikvincent 0:05ccbd4f84f1 46 * notice, this list of conditions and the following disclaimer.
hendrikvincent 0:05ccbd4f84f1 47 * 2. Redistributions in binary form must reproduce the above copyright
hendrikvincent 0:05ccbd4f84f1 48 * notice, this list of conditions and the following disclaimer in the
hendrikvincent 0:05ccbd4f84f1 49 * documentation and/or other materials provided with the distribution.
hendrikvincent 0:05ccbd4f84f1 50 * 3. All advertising materials mentioning features or use of this software
hendrikvincent 0:05ccbd4f84f1 51 * must display the following acknowledgement:
hendrikvincent 0:05ccbd4f84f1 52 * This product includes software developed by the NetBSD
hendrikvincent 0:05ccbd4f84f1 53 * Foundation, Inc. and its contributors.
hendrikvincent 0:05ccbd4f84f1 54 * 4. Neither the name of The NetBSD Foundation nor the names of its
hendrikvincent 0:05ccbd4f84f1 55 * contributors may be used to endorse or promote products derived
hendrikvincent 0:05ccbd4f84f1 56 * from this software without specific prior written permission.
hendrikvincent 0:05ccbd4f84f1 57 *
hendrikvincent 0:05ccbd4f84f1 58 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
hendrikvincent 0:05ccbd4f84f1 59 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
hendrikvincent 0:05ccbd4f84f1 60 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
hendrikvincent 0:05ccbd4f84f1 61 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
hendrikvincent 0:05ccbd4f84f1 62 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
hendrikvincent 0:05ccbd4f84f1 63 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
hendrikvincent 0:05ccbd4f84f1 64 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
hendrikvincent 0:05ccbd4f84f1 65 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
hendrikvincent 0:05ccbd4f84f1 66 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
hendrikvincent 0:05ccbd4f84f1 67 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
hendrikvincent 0:05ccbd4f84f1 68 * POSSIBILITY OF SUCH DAMAGE.
hendrikvincent 0:05ccbd4f84f1 69 */
hendrikvincent 0:05ccbd4f84f1 70
hendrikvincent 0:05ccbd4f84f1 71 #include "lwip/opt.h"
hendrikvincent 0:05ccbd4f84f1 72
hendrikvincent 0:05ccbd4f84f1 73 #if PPPOE_SUPPORT /* don't build if not configured for use in lwipopts.h */
hendrikvincent 0:05ccbd4f84f1 74
hendrikvincent 0:05ccbd4f84f1 75 #include "netif/ppp_oe.h"
hendrikvincent 0:05ccbd4f84f1 76
hendrikvincent 0:05ccbd4f84f1 77 #include "ppp.h"
hendrikvincent 0:05ccbd4f84f1 78 #include "pppdebug.h"
hendrikvincent 0:05ccbd4f84f1 79
hendrikvincent 0:05ccbd4f84f1 80 #include "lwip/timers.h"
hendrikvincent 0:05ccbd4f84f1 81 #include "lwip/memp.h"
hendrikvincent 0:05ccbd4f84f1 82
hendrikvincent 0:05ccbd4f84f1 83 #include <string.h>
hendrikvincent 0:05ccbd4f84f1 84 #include <stdio.h>
hendrikvincent 0:05ccbd4f84f1 85
hendrikvincent 0:05ccbd4f84f1 86
hendrikvincent 0:05ccbd4f84f1 87 /* Add a 16 bit unsigned value to a buffer pointed to by PTR */
hendrikvincent 0:05ccbd4f84f1 88 #define PPPOE_ADD_16(PTR, VAL) \
hendrikvincent 0:05ccbd4f84f1 89 *(PTR)++ = (u8_t)((VAL) / 256); \
hendrikvincent 0:05ccbd4f84f1 90 *(PTR)++ = (u8_t)((VAL) % 256)
hendrikvincent 0:05ccbd4f84f1 91
hendrikvincent 0:05ccbd4f84f1 92 /* Add a complete PPPoE header to the buffer pointed to by PTR */
hendrikvincent 0:05ccbd4f84f1 93 #define PPPOE_ADD_HEADER(PTR, CODE, SESS, LEN) \
hendrikvincent 0:05ccbd4f84f1 94 *(PTR)++ = PPPOE_VERTYPE; \
hendrikvincent 0:05ccbd4f84f1 95 *(PTR)++ = (CODE); \
hendrikvincent 0:05ccbd4f84f1 96 PPPOE_ADD_16(PTR, SESS); \
hendrikvincent 0:05ccbd4f84f1 97 PPPOE_ADD_16(PTR, LEN)
hendrikvincent 0:05ccbd4f84f1 98
hendrikvincent 0:05ccbd4f84f1 99 #define PPPOE_DISC_TIMEOUT (5*1000) /* base for quick timeout calculation */
hendrikvincent 0:05ccbd4f84f1 100 #define PPPOE_SLOW_RETRY (60*1000) /* persistent retry interval */
hendrikvincent 0:05ccbd4f84f1 101 #define PPPOE_DISC_MAXPADI 4 /* retry PADI four times (quickly) */
hendrikvincent 0:05ccbd4f84f1 102 #define PPPOE_DISC_MAXPADR 2 /* retry PADR twice */
hendrikvincent 0:05ccbd4f84f1 103
hendrikvincent 0:05ccbd4f84f1 104 #ifdef PPPOE_SERVER
hendrikvincent 0:05ccbd4f84f1 105 #error "PPPOE_SERVER is not yet supported under lwIP!"
hendrikvincent 0:05ccbd4f84f1 106 /* from if_spppsubr.c */
hendrikvincent 0:05ccbd4f84f1 107 #define IFF_PASSIVE IFF_LINK0 /* wait passively for connection */
hendrikvincent 0:05ccbd4f84f1 108 #endif
hendrikvincent 0:05ccbd4f84f1 109
hendrikvincent 0:05ccbd4f84f1 110 #ifndef PPPOE_ERRORSTRING_LEN
hendrikvincent 0:05ccbd4f84f1 111 #define PPPOE_ERRORSTRING_LEN 64
hendrikvincent 0:05ccbd4f84f1 112 #endif
hendrikvincent 0:05ccbd4f84f1 113 static char pppoe_error_tmp[PPPOE_ERRORSTRING_LEN];
hendrikvincent 0:05ccbd4f84f1 114
hendrikvincent 0:05ccbd4f84f1 115
hendrikvincent 0:05ccbd4f84f1 116 /* input routines */
hendrikvincent 0:05ccbd4f84f1 117 static void pppoe_dispatch_disc_pkt(struct netif *, struct pbuf *);
hendrikvincent 0:05ccbd4f84f1 118
hendrikvincent 0:05ccbd4f84f1 119 /* management routines */
hendrikvincent 0:05ccbd4f84f1 120 static int pppoe_do_disconnect(struct pppoe_softc *);
hendrikvincent 0:05ccbd4f84f1 121 static void pppoe_abort_connect(struct pppoe_softc *);
hendrikvincent 0:05ccbd4f84f1 122 static void pppoe_clear_softc(struct pppoe_softc *, const char *);
hendrikvincent 0:05ccbd4f84f1 123
hendrikvincent 0:05ccbd4f84f1 124 /* internal timeout handling */
hendrikvincent 0:05ccbd4f84f1 125 static void pppoe_timeout(void *);
hendrikvincent 0:05ccbd4f84f1 126
hendrikvincent 0:05ccbd4f84f1 127 /* sending actual protocol controll packets */
hendrikvincent 0:05ccbd4f84f1 128 static err_t pppoe_send_padi(struct pppoe_softc *);
hendrikvincent 0:05ccbd4f84f1 129 static err_t pppoe_send_padr(struct pppoe_softc *);
hendrikvincent 0:05ccbd4f84f1 130 #ifdef PPPOE_SERVER
hendrikvincent 0:05ccbd4f84f1 131 static err_t pppoe_send_pado(struct pppoe_softc *);
hendrikvincent 0:05ccbd4f84f1 132 static err_t pppoe_send_pads(struct pppoe_softc *);
hendrikvincent 0:05ccbd4f84f1 133 #endif
hendrikvincent 0:05ccbd4f84f1 134 static err_t pppoe_send_padt(struct netif *, u_int, const u8_t *);
hendrikvincent 0:05ccbd4f84f1 135
hendrikvincent 0:05ccbd4f84f1 136 /* internal helper functions */
hendrikvincent 0:05ccbd4f84f1 137 static struct pppoe_softc * pppoe_find_softc_by_session(u_int, struct netif *);
hendrikvincent 0:05ccbd4f84f1 138 static struct pppoe_softc * pppoe_find_softc_by_hunique(u8_t *, size_t, struct netif *);
hendrikvincent 0:05ccbd4f84f1 139
hendrikvincent 0:05ccbd4f84f1 140 /** linked list of created pppoe interfaces */
hendrikvincent 0:05ccbd4f84f1 141 static struct pppoe_softc *pppoe_softc_list;
hendrikvincent 0:05ccbd4f84f1 142
hendrikvincent 0:05ccbd4f84f1 143 err_t
hendrikvincent 0:05ccbd4f84f1 144 pppoe_create(struct netif *ethif, int pd, void (*linkStatusCB)(int pd, int up), struct pppoe_softc **scptr)
hendrikvincent 0:05ccbd4f84f1 145 {
hendrikvincent 0:05ccbd4f84f1 146 struct pppoe_softc *sc;
hendrikvincent 0:05ccbd4f84f1 147
hendrikvincent 0:05ccbd4f84f1 148 sc = (struct pppoe_softc *)memp_malloc(MEMP_PPPOE_IF);
hendrikvincent 0:05ccbd4f84f1 149 if (sc == NULL) {
hendrikvincent 0:05ccbd4f84f1 150 *scptr = NULL;
hendrikvincent 0:05ccbd4f84f1 151 return ERR_MEM;
hendrikvincent 0:05ccbd4f84f1 152 }
hendrikvincent 0:05ccbd4f84f1 153 memset(sc, 0, sizeof(struct pppoe_softc));
hendrikvincent 0:05ccbd4f84f1 154
hendrikvincent 0:05ccbd4f84f1 155 /* changed to real address later */
hendrikvincent 0:05ccbd4f84f1 156 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
hendrikvincent 0:05ccbd4f84f1 157
hendrikvincent 0:05ccbd4f84f1 158 sc->sc_pd = pd;
hendrikvincent 0:05ccbd4f84f1 159 sc->sc_linkStatusCB = linkStatusCB;
hendrikvincent 0:05ccbd4f84f1 160 sc->sc_ethif = ethif;
hendrikvincent 0:05ccbd4f84f1 161
hendrikvincent 0:05ccbd4f84f1 162 /* put the new interface at the head of the list */
hendrikvincent 0:05ccbd4f84f1 163 sc->next = pppoe_softc_list;
hendrikvincent 0:05ccbd4f84f1 164 pppoe_softc_list = sc;
hendrikvincent 0:05ccbd4f84f1 165
hendrikvincent 0:05ccbd4f84f1 166 *scptr = sc;
hendrikvincent 0:05ccbd4f84f1 167
hendrikvincent 0:05ccbd4f84f1 168 return ERR_OK;
hendrikvincent 0:05ccbd4f84f1 169 }
hendrikvincent 0:05ccbd4f84f1 170
hendrikvincent 0:05ccbd4f84f1 171 err_t
hendrikvincent 0:05ccbd4f84f1 172 pppoe_destroy(struct netif *ifp)
hendrikvincent 0:05ccbd4f84f1 173 {
hendrikvincent 0:05ccbd4f84f1 174 struct pppoe_softc *sc, *prev = NULL;
hendrikvincent 0:05ccbd4f84f1 175
hendrikvincent 0:05ccbd4f84f1 176 for (sc = pppoe_softc_list; sc != NULL; prev = sc, sc = sc->next) {
hendrikvincent 0:05ccbd4f84f1 177 if (sc->sc_ethif == ifp) {
hendrikvincent 0:05ccbd4f84f1 178 break;
hendrikvincent 0:05ccbd4f84f1 179 }
hendrikvincent 0:05ccbd4f84f1 180 }
hendrikvincent 0:05ccbd4f84f1 181
hendrikvincent 0:05ccbd4f84f1 182 if(!(sc && (sc->sc_ethif == ifp))) {
hendrikvincent 0:05ccbd4f84f1 183 return ERR_IF;
hendrikvincent 0:05ccbd4f84f1 184 }
hendrikvincent 0:05ccbd4f84f1 185
hendrikvincent 0:05ccbd4f84f1 186 sys_untimeout(pppoe_timeout, sc);
hendrikvincent 0:05ccbd4f84f1 187 if (prev == NULL) {
hendrikvincent 0:05ccbd4f84f1 188 /* remove sc from the head of the list */
hendrikvincent 0:05ccbd4f84f1 189 pppoe_softc_list = sc->next;
hendrikvincent 0:05ccbd4f84f1 190 } else {
hendrikvincent 0:05ccbd4f84f1 191 /* remove sc from the list */
hendrikvincent 0:05ccbd4f84f1 192 prev->next = sc->next;
hendrikvincent 0:05ccbd4f84f1 193 }
hendrikvincent 0:05ccbd4f84f1 194
hendrikvincent 0:05ccbd4f84f1 195 #ifdef PPPOE_TODO
hendrikvincent 0:05ccbd4f84f1 196 if (sc->sc_concentrator_name) {
hendrikvincent 0:05ccbd4f84f1 197 mem_free(sc->sc_concentrator_name);
hendrikvincent 0:05ccbd4f84f1 198 }
hendrikvincent 0:05ccbd4f84f1 199 if (sc->sc_service_name) {
hendrikvincent 0:05ccbd4f84f1 200 mem_free(sc->sc_service_name);
hendrikvincent 0:05ccbd4f84f1 201 }
hendrikvincent 0:05ccbd4f84f1 202 #endif /* PPPOE_TODO */
hendrikvincent 0:05ccbd4f84f1 203 memp_free(MEMP_PPPOE_IF, sc);
hendrikvincent 0:05ccbd4f84f1 204
hendrikvincent 0:05ccbd4f84f1 205 return ERR_OK;
hendrikvincent 0:05ccbd4f84f1 206 }
hendrikvincent 0:05ccbd4f84f1 207
hendrikvincent 0:05ccbd4f84f1 208 /*
hendrikvincent 0:05ccbd4f84f1 209 * Find the interface handling the specified session.
hendrikvincent 0:05ccbd4f84f1 210 * Note: O(number of sessions open), this is a client-side only, mean
hendrikvincent 0:05ccbd4f84f1 211 * and lean implementation, so number of open sessions typically should
hendrikvincent 0:05ccbd4f84f1 212 * be 1.
hendrikvincent 0:05ccbd4f84f1 213 */
hendrikvincent 0:05ccbd4f84f1 214 static struct pppoe_softc *
hendrikvincent 0:05ccbd4f84f1 215 pppoe_find_softc_by_session(u_int session, struct netif *rcvif)
hendrikvincent 0:05ccbd4f84f1 216 {
hendrikvincent 0:05ccbd4f84f1 217 struct pppoe_softc *sc;
hendrikvincent 0:05ccbd4f84f1 218
hendrikvincent 0:05ccbd4f84f1 219 if (session == 0) {
hendrikvincent 0:05ccbd4f84f1 220 return NULL;
hendrikvincent 0:05ccbd4f84f1 221 }
hendrikvincent 0:05ccbd4f84f1 222
hendrikvincent 0:05ccbd4f84f1 223 for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
hendrikvincent 0:05ccbd4f84f1 224 if (sc->sc_state == PPPOE_STATE_SESSION
hendrikvincent 0:05ccbd4f84f1 225 && sc->sc_session == session) {
hendrikvincent 0:05ccbd4f84f1 226 if (sc->sc_ethif == rcvif) {
hendrikvincent 0:05ccbd4f84f1 227 return sc;
hendrikvincent 0:05ccbd4f84f1 228 } else {
hendrikvincent 0:05ccbd4f84f1 229 return NULL;
hendrikvincent 0:05ccbd4f84f1 230 }
hendrikvincent 0:05ccbd4f84f1 231 }
hendrikvincent 0:05ccbd4f84f1 232 }
hendrikvincent 0:05ccbd4f84f1 233 return NULL;
hendrikvincent 0:05ccbd4f84f1 234 }
hendrikvincent 0:05ccbd4f84f1 235
hendrikvincent 0:05ccbd4f84f1 236 /* Check host unique token passed and return appropriate softc pointer,
hendrikvincent 0:05ccbd4f84f1 237 * or NULL if token is bogus. */
hendrikvincent 0:05ccbd4f84f1 238 static struct pppoe_softc *
hendrikvincent 0:05ccbd4f84f1 239 pppoe_find_softc_by_hunique(u8_t *token, size_t len, struct netif *rcvif)
hendrikvincent 0:05ccbd4f84f1 240 {
hendrikvincent 0:05ccbd4f84f1 241 struct pppoe_softc *sc, *t;
hendrikvincent 0:05ccbd4f84f1 242
hendrikvincent 0:05ccbd4f84f1 243 if (pppoe_softc_list == NULL) {
hendrikvincent 0:05ccbd4f84f1 244 return NULL;
hendrikvincent 0:05ccbd4f84f1 245 }
hendrikvincent 0:05ccbd4f84f1 246
hendrikvincent 0:05ccbd4f84f1 247 if (len != sizeof sc) {
hendrikvincent 0:05ccbd4f84f1 248 return NULL;
hendrikvincent 0:05ccbd4f84f1 249 }
hendrikvincent 0:05ccbd4f84f1 250 MEMCPY(&t, token, len);
hendrikvincent 0:05ccbd4f84f1 251
hendrikvincent 0:05ccbd4f84f1 252 for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
hendrikvincent 0:05ccbd4f84f1 253 if (sc == t) {
hendrikvincent 0:05ccbd4f84f1 254 break;
hendrikvincent 0:05ccbd4f84f1 255 }
hendrikvincent 0:05ccbd4f84f1 256 }
hendrikvincent 0:05ccbd4f84f1 257
hendrikvincent 0:05ccbd4f84f1 258 if (sc == NULL) {
hendrikvincent 0:05ccbd4f84f1 259 PPPDEBUG(LOG_DEBUG, ("pppoe: alien host unique tag, no session found\n"));
hendrikvincent 0:05ccbd4f84f1 260 return NULL;
hendrikvincent 0:05ccbd4f84f1 261 }
hendrikvincent 0:05ccbd4f84f1 262
hendrikvincent 0:05ccbd4f84f1 263 /* should be safe to access *sc now */
hendrikvincent 0:05ccbd4f84f1 264 if (sc->sc_state < PPPOE_STATE_PADI_SENT || sc->sc_state >= PPPOE_STATE_SESSION) {
hendrikvincent 0:05ccbd4f84f1 265 printf("%c%c%"U16_F": host unique tag found, but it belongs to a connection in state %d\n",
hendrikvincent 0:05ccbd4f84f1 266 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, sc->sc_state);
hendrikvincent 0:05ccbd4f84f1 267 return NULL;
hendrikvincent 0:05ccbd4f84f1 268 }
hendrikvincent 0:05ccbd4f84f1 269 if (sc->sc_ethif != rcvif) {
hendrikvincent 0:05ccbd4f84f1 270 printf("%c%c%"U16_F": wrong interface, not accepting host unique\n",
hendrikvincent 0:05ccbd4f84f1 271 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
hendrikvincent 0:05ccbd4f84f1 272 return NULL;
hendrikvincent 0:05ccbd4f84f1 273 }
hendrikvincent 0:05ccbd4f84f1 274 return sc;
hendrikvincent 0:05ccbd4f84f1 275 }
hendrikvincent 0:05ccbd4f84f1 276
hendrikvincent 0:05ccbd4f84f1 277 static void
hendrikvincent 0:05ccbd4f84f1 278 pppoe_linkstatus_up(struct pppoe_softc *sc)
hendrikvincent 0:05ccbd4f84f1 279 {
hendrikvincent 0:05ccbd4f84f1 280 sc->sc_linkStatusCB(sc->sc_pd, 1);
hendrikvincent 0:05ccbd4f84f1 281 }
hendrikvincent 0:05ccbd4f84f1 282
hendrikvincent 0:05ccbd4f84f1 283 /* analyze and handle a single received packet while not in session state */
hendrikvincent 0:05ccbd4f84f1 284 static void
hendrikvincent 0:05ccbd4f84f1 285 pppoe_dispatch_disc_pkt(struct netif *netif, struct pbuf *pb)
hendrikvincent 0:05ccbd4f84f1 286 {
hendrikvincent 0:05ccbd4f84f1 287 u16_t tag, len;
hendrikvincent 0:05ccbd4f84f1 288 u16_t session, plen;
hendrikvincent 0:05ccbd4f84f1 289 struct pppoe_softc *sc;
hendrikvincent 0:05ccbd4f84f1 290 const char *err_msg;
hendrikvincent 0:05ccbd4f84f1 291 char devname[6];
hendrikvincent 0:05ccbd4f84f1 292 u8_t *ac_cookie;
hendrikvincent 0:05ccbd4f84f1 293 u16_t ac_cookie_len;
hendrikvincent 0:05ccbd4f84f1 294 #ifdef PPPOE_SERVER
hendrikvincent 0:05ccbd4f84f1 295 u8_t *hunique;
hendrikvincent 0:05ccbd4f84f1 296 size_t hunique_len;
hendrikvincent 0:05ccbd4f84f1 297 #endif
hendrikvincent 0:05ccbd4f84f1 298 struct pppoehdr *ph;
hendrikvincent 0:05ccbd4f84f1 299 struct pppoetag pt;
hendrikvincent 0:05ccbd4f84f1 300 int off, err, errortag;
hendrikvincent 0:05ccbd4f84f1 301 struct eth_hdr *ethhdr;
hendrikvincent 0:05ccbd4f84f1 302
hendrikvincent 0:05ccbd4f84f1 303 pb = pppSingleBuf(pb);
hendrikvincent 0:05ccbd4f84f1 304
hendrikvincent 0:05ccbd4f84f1 305 strcpy(devname, "pppoe"); /* as long as we don't know which instance */
hendrikvincent 0:05ccbd4f84f1 306 err_msg = NULL;
hendrikvincent 0:05ccbd4f84f1 307 errortag = 0;
hendrikvincent 0:05ccbd4f84f1 308 if (pb->len < sizeof(*ethhdr)) {
hendrikvincent 0:05ccbd4f84f1 309 goto done;
hendrikvincent 0:05ccbd4f84f1 310 }
hendrikvincent 0:05ccbd4f84f1 311 ethhdr = (struct eth_hdr *)pb->payload;
hendrikvincent 0:05ccbd4f84f1 312 off = sizeof(*ethhdr);
hendrikvincent 0:05ccbd4f84f1 313
hendrikvincent 0:05ccbd4f84f1 314 ac_cookie = NULL;
hendrikvincent 0:05ccbd4f84f1 315 ac_cookie_len = 0;
hendrikvincent 0:05ccbd4f84f1 316 #ifdef PPPOE_SERVER
hendrikvincent 0:05ccbd4f84f1 317 hunique = NULL;
hendrikvincent 0:05ccbd4f84f1 318 hunique_len = 0;
hendrikvincent 0:05ccbd4f84f1 319 #endif
hendrikvincent 0:05ccbd4f84f1 320 session = 0;
hendrikvincent 0:05ccbd4f84f1 321 if (pb->len - off < PPPOE_HEADERLEN) {
hendrikvincent 0:05ccbd4f84f1 322 printf("pppoe: packet too short: %d\n", pb->len);
hendrikvincent 0:05ccbd4f84f1 323 goto done;
hendrikvincent 0:05ccbd4f84f1 324 }
hendrikvincent 0:05ccbd4f84f1 325
hendrikvincent 0:05ccbd4f84f1 326 ph = (struct pppoehdr *) (ethhdr + 1);
hendrikvincent 0:05ccbd4f84f1 327 if (ph->vertype != PPPOE_VERTYPE) {
hendrikvincent 0:05ccbd4f84f1 328 printf("pppoe: unknown version/type packet: 0x%x\n", ph->vertype);
hendrikvincent 0:05ccbd4f84f1 329 goto done;
hendrikvincent 0:05ccbd4f84f1 330 }
hendrikvincent 0:05ccbd4f84f1 331 session = ntohs(ph->session);
hendrikvincent 0:05ccbd4f84f1 332 plen = ntohs(ph->plen);
hendrikvincent 0:05ccbd4f84f1 333 off += sizeof(*ph);
hendrikvincent 0:05ccbd4f84f1 334
hendrikvincent 0:05ccbd4f84f1 335 if (plen + off > pb->len) {
hendrikvincent 0:05ccbd4f84f1 336 printf("pppoe: packet content does not fit: data available = %d, packet size = %u\n",
hendrikvincent 0:05ccbd4f84f1 337 pb->len - off, plen);
hendrikvincent 0:05ccbd4f84f1 338 goto done;
hendrikvincent 0:05ccbd4f84f1 339 }
hendrikvincent 0:05ccbd4f84f1 340 if(pb->tot_len == pb->len) {
hendrikvincent 0:05ccbd4f84f1 341 pb->tot_len = pb->len = (u16_t)off + plen; /* ignore trailing garbage */
hendrikvincent 0:05ccbd4f84f1 342 }
hendrikvincent 0:05ccbd4f84f1 343 tag = 0;
hendrikvincent 0:05ccbd4f84f1 344 len = 0;
hendrikvincent 0:05ccbd4f84f1 345 sc = NULL;
hendrikvincent 0:05ccbd4f84f1 346 while (off + sizeof(pt) <= pb->len) {
hendrikvincent 0:05ccbd4f84f1 347 MEMCPY(&pt, (u8_t*)pb->payload + off, sizeof(pt));
hendrikvincent 0:05ccbd4f84f1 348 tag = ntohs(pt.tag);
hendrikvincent 0:05ccbd4f84f1 349 len = ntohs(pt.len);
hendrikvincent 0:05ccbd4f84f1 350 if (off + sizeof(pt) + len > pb->len) {
hendrikvincent 0:05ccbd4f84f1 351 printf("pppoe: tag 0x%x len 0x%x is too long\n", tag, len);
hendrikvincent 0:05ccbd4f84f1 352 goto done;
hendrikvincent 0:05ccbd4f84f1 353 }
hendrikvincent 0:05ccbd4f84f1 354 switch (tag) {
hendrikvincent 0:05ccbd4f84f1 355 case PPPOE_TAG_EOL:
hendrikvincent 0:05ccbd4f84f1 356 goto breakbreak;
hendrikvincent 0:05ccbd4f84f1 357 case PPPOE_TAG_SNAME:
hendrikvincent 0:05ccbd4f84f1 358 break; /* ignored */
hendrikvincent 0:05ccbd4f84f1 359 case PPPOE_TAG_ACNAME:
hendrikvincent 0:05ccbd4f84f1 360 break; /* ignored */
hendrikvincent 0:05ccbd4f84f1 361 case PPPOE_TAG_HUNIQUE:
hendrikvincent 0:05ccbd4f84f1 362 if (sc != NULL) {
hendrikvincent 0:05ccbd4f84f1 363 break;
hendrikvincent 0:05ccbd4f84f1 364 }
hendrikvincent 0:05ccbd4f84f1 365 #ifdef PPPOE_SERVER
hendrikvincent 0:05ccbd4f84f1 366 hunique = (u8_t*)pb->payload + off + sizeof(pt);
hendrikvincent 0:05ccbd4f84f1 367 hunique_len = len;
hendrikvincent 0:05ccbd4f84f1 368 #endif
hendrikvincent 0:05ccbd4f84f1 369 sc = pppoe_find_softc_by_hunique((u8_t*)pb->payload + off + sizeof(pt), len, netif);
hendrikvincent 0:05ccbd4f84f1 370 if (sc != NULL) {
hendrikvincent 0:05ccbd4f84f1 371 snprintf(devname, sizeof(devname), "%c%c%"U16_F, sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
hendrikvincent 0:05ccbd4f84f1 372 }
hendrikvincent 0:05ccbd4f84f1 373 break;
hendrikvincent 0:05ccbd4f84f1 374 case PPPOE_TAG_ACCOOKIE:
hendrikvincent 0:05ccbd4f84f1 375 if (ac_cookie == NULL) {
hendrikvincent 0:05ccbd4f84f1 376 ac_cookie = (u8_t*)pb->payload + off + sizeof(pt);
hendrikvincent 0:05ccbd4f84f1 377 ac_cookie_len = len;
hendrikvincent 0:05ccbd4f84f1 378 }
hendrikvincent 0:05ccbd4f84f1 379 break;
hendrikvincent 0:05ccbd4f84f1 380 case PPPOE_TAG_SNAME_ERR:
hendrikvincent 0:05ccbd4f84f1 381 err_msg = "SERVICE NAME ERROR";
hendrikvincent 0:05ccbd4f84f1 382 errortag = 1;
hendrikvincent 0:05ccbd4f84f1 383 break;
hendrikvincent 0:05ccbd4f84f1 384 case PPPOE_TAG_ACSYS_ERR:
hendrikvincent 0:05ccbd4f84f1 385 err_msg = "AC SYSTEM ERROR";
hendrikvincent 0:05ccbd4f84f1 386 errortag = 1;
hendrikvincent 0:05ccbd4f84f1 387 break;
hendrikvincent 0:05ccbd4f84f1 388 case PPPOE_TAG_GENERIC_ERR:
hendrikvincent 0:05ccbd4f84f1 389 err_msg = "GENERIC ERROR";
hendrikvincent 0:05ccbd4f84f1 390 errortag = 1;
hendrikvincent 0:05ccbd4f84f1 391 break;
hendrikvincent 0:05ccbd4f84f1 392 }
hendrikvincent 0:05ccbd4f84f1 393 if (err_msg) {
hendrikvincent 0:05ccbd4f84f1 394 if (errortag && len) {
hendrikvincent 0:05ccbd4f84f1 395 u16_t error_len = LWIP_MIN(len, sizeof(pppoe_error_tmp)-1);
hendrikvincent 0:05ccbd4f84f1 396 strncpy(pppoe_error_tmp, (char*)pb->payload + off + sizeof(pt), error_len);
hendrikvincent 0:05ccbd4f84f1 397 pppoe_error_tmp[error_len-1] = '\0';
hendrikvincent 0:05ccbd4f84f1 398 printf("%s: %s: %s\n", devname, err_msg, pppoe_error_tmp);
hendrikvincent 0:05ccbd4f84f1 399 } else {
hendrikvincent 0:05ccbd4f84f1 400 printf("%s: %s\n", devname, err_msg);
hendrikvincent 0:05ccbd4f84f1 401 }
hendrikvincent 0:05ccbd4f84f1 402 if (errortag) {
hendrikvincent 0:05ccbd4f84f1 403 goto done;
hendrikvincent 0:05ccbd4f84f1 404 }
hendrikvincent 0:05ccbd4f84f1 405 }
hendrikvincent 0:05ccbd4f84f1 406 off += sizeof(pt) + len;
hendrikvincent 0:05ccbd4f84f1 407 }
hendrikvincent 0:05ccbd4f84f1 408
hendrikvincent 0:05ccbd4f84f1 409 breakbreak:;
hendrikvincent 0:05ccbd4f84f1 410 switch (ph->code) {
hendrikvincent 0:05ccbd4f84f1 411 case PPPOE_CODE_PADI:
hendrikvincent 0:05ccbd4f84f1 412 #ifdef PPPOE_SERVER
hendrikvincent 0:05ccbd4f84f1 413 /*
hendrikvincent 0:05ccbd4f84f1 414 * got service name, concentrator name, and/or host unique.
hendrikvincent 0:05ccbd4f84f1 415 * ignore if we have no interfaces with IFF_PASSIVE|IFF_UP.
hendrikvincent 0:05ccbd4f84f1 416 */
hendrikvincent 0:05ccbd4f84f1 417 if (LIST_EMPTY(&pppoe_softc_list)) {
hendrikvincent 0:05ccbd4f84f1 418 goto done;
hendrikvincent 0:05ccbd4f84f1 419 }
hendrikvincent 0:05ccbd4f84f1 420 LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
hendrikvincent 0:05ccbd4f84f1 421 if (!(sc->sc_sppp.pp_if.if_flags & IFF_UP)) {
hendrikvincent 0:05ccbd4f84f1 422 continue;
hendrikvincent 0:05ccbd4f84f1 423 }
hendrikvincent 0:05ccbd4f84f1 424 if (!(sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
hendrikvincent 0:05ccbd4f84f1 425 continue;
hendrikvincent 0:05ccbd4f84f1 426 }
hendrikvincent 0:05ccbd4f84f1 427 if (sc->sc_state == PPPOE_STATE_INITIAL) {
hendrikvincent 0:05ccbd4f84f1 428 break;
hendrikvincent 0:05ccbd4f84f1 429 }
hendrikvincent 0:05ccbd4f84f1 430 }
hendrikvincent 0:05ccbd4f84f1 431 if (sc == NULL) {
hendrikvincent 0:05ccbd4f84f1 432 /* printf("pppoe: free passive interface is not found\n"); */
hendrikvincent 0:05ccbd4f84f1 433 goto done;
hendrikvincent 0:05ccbd4f84f1 434 }
hendrikvincent 0:05ccbd4f84f1 435 if (hunique) {
hendrikvincent 0:05ccbd4f84f1 436 if (sc->sc_hunique) {
hendrikvincent 0:05ccbd4f84f1 437 mem_free(sc->sc_hunique);
hendrikvincent 0:05ccbd4f84f1 438 }
hendrikvincent 0:05ccbd4f84f1 439 sc->sc_hunique = mem_malloc(hunique_len);
hendrikvincent 0:05ccbd4f84f1 440 if (sc->sc_hunique == NULL) {
hendrikvincent 0:05ccbd4f84f1 441 goto done;
hendrikvincent 0:05ccbd4f84f1 442 }
hendrikvincent 0:05ccbd4f84f1 443 sc->sc_hunique_len = hunique_len;
hendrikvincent 0:05ccbd4f84f1 444 MEMCPY(sc->sc_hunique, hunique, hunique_len);
hendrikvincent 0:05ccbd4f84f1 445 }
hendrikvincent 0:05ccbd4f84f1 446 MEMCPY(&sc->sc_dest, eh->ether_shost, sizeof sc->sc_dest);
hendrikvincent 0:05ccbd4f84f1 447 sc->sc_state = PPPOE_STATE_PADO_SENT;
hendrikvincent 0:05ccbd4f84f1 448 pppoe_send_pado(sc);
hendrikvincent 0:05ccbd4f84f1 449 break;
hendrikvincent 0:05ccbd4f84f1 450 #endif /* PPPOE_SERVER */
hendrikvincent 0:05ccbd4f84f1 451 case PPPOE_CODE_PADR:
hendrikvincent 0:05ccbd4f84f1 452 #ifdef PPPOE_SERVER
hendrikvincent 0:05ccbd4f84f1 453 /*
hendrikvincent 0:05ccbd4f84f1 454 * get sc from ac_cookie if IFF_PASSIVE
hendrikvincent 0:05ccbd4f84f1 455 */
hendrikvincent 0:05ccbd4f84f1 456 if (ac_cookie == NULL) {
hendrikvincent 0:05ccbd4f84f1 457 /* be quiet if there is not a single pppoe instance */
hendrikvincent 0:05ccbd4f84f1 458 printf("pppoe: received PADR but not includes ac_cookie\n");
hendrikvincent 0:05ccbd4f84f1 459 goto done;
hendrikvincent 0:05ccbd4f84f1 460 }
hendrikvincent 0:05ccbd4f84f1 461 sc = pppoe_find_softc_by_hunique(ac_cookie, ac_cookie_len, netif);
hendrikvincent 0:05ccbd4f84f1 462 if (sc == NULL) {
hendrikvincent 0:05ccbd4f84f1 463 /* be quiet if there is not a single pppoe instance */
hendrikvincent 0:05ccbd4f84f1 464 if (!LIST_EMPTY(&pppoe_softc_list)) {
hendrikvincent 0:05ccbd4f84f1 465 printf("pppoe: received PADR but could not find request for it\n");
hendrikvincent 0:05ccbd4f84f1 466 }
hendrikvincent 0:05ccbd4f84f1 467 goto done;
hendrikvincent 0:05ccbd4f84f1 468 }
hendrikvincent 0:05ccbd4f84f1 469 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
hendrikvincent 0:05ccbd4f84f1 470 printf("%c%c%"U16_F": received unexpected PADR\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
hendrikvincent 0:05ccbd4f84f1 471 goto done;
hendrikvincent 0:05ccbd4f84f1 472 }
hendrikvincent 0:05ccbd4f84f1 473 if (hunique) {
hendrikvincent 0:05ccbd4f84f1 474 if (sc->sc_hunique) {
hendrikvincent 0:05ccbd4f84f1 475 mem_free(sc->sc_hunique);
hendrikvincent 0:05ccbd4f84f1 476 }
hendrikvincent 0:05ccbd4f84f1 477 sc->sc_hunique = mem_malloc(hunique_len);
hendrikvincent 0:05ccbd4f84f1 478 if (sc->sc_hunique == NULL) {
hendrikvincent 0:05ccbd4f84f1 479 goto done;
hendrikvincent 0:05ccbd4f84f1 480 }
hendrikvincent 0:05ccbd4f84f1 481 sc->sc_hunique_len = hunique_len;
hendrikvincent 0:05ccbd4f84f1 482 MEMCPY(sc->sc_hunique, hunique, hunique_len);
hendrikvincent 0:05ccbd4f84f1 483 }
hendrikvincent 0:05ccbd4f84f1 484 pppoe_send_pads(sc);
hendrikvincent 0:05ccbd4f84f1 485 sc->sc_state = PPPOE_STATE_SESSION;
hendrikvincent 0:05ccbd4f84f1 486 pppoe_linkstatus_up(sc); /* notify upper layers */
hendrikvincent 0:05ccbd4f84f1 487 break;
hendrikvincent 0:05ccbd4f84f1 488 #else
hendrikvincent 0:05ccbd4f84f1 489 /* ignore, we are no access concentrator */
hendrikvincent 0:05ccbd4f84f1 490 goto done;
hendrikvincent 0:05ccbd4f84f1 491 #endif /* PPPOE_SERVER */
hendrikvincent 0:05ccbd4f84f1 492 case PPPOE_CODE_PADO:
hendrikvincent 0:05ccbd4f84f1 493 if (sc == NULL) {
hendrikvincent 0:05ccbd4f84f1 494 /* be quiet if there is not a single pppoe instance */
hendrikvincent 0:05ccbd4f84f1 495 if (pppoe_softc_list != NULL) {
hendrikvincent 0:05ccbd4f84f1 496 printf("pppoe: received PADO but could not find request for it\n");
hendrikvincent 0:05ccbd4f84f1 497 }
hendrikvincent 0:05ccbd4f84f1 498 goto done;
hendrikvincent 0:05ccbd4f84f1 499 }
hendrikvincent 0:05ccbd4f84f1 500 if (sc->sc_state != PPPOE_STATE_PADI_SENT) {
hendrikvincent 0:05ccbd4f84f1 501 printf("%c%c%"U16_F": received unexpected PADO\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
hendrikvincent 0:05ccbd4f84f1 502 goto done;
hendrikvincent 0:05ccbd4f84f1 503 }
hendrikvincent 0:05ccbd4f84f1 504 if (ac_cookie) {
hendrikvincent 0:05ccbd4f84f1 505 sc->sc_ac_cookie_len = ac_cookie_len;
hendrikvincent 0:05ccbd4f84f1 506 MEMCPY(sc->sc_ac_cookie, ac_cookie, ac_cookie_len);
hendrikvincent 0:05ccbd4f84f1 507 }
hendrikvincent 0:05ccbd4f84f1 508 MEMCPY(&sc->sc_dest, ethhdr->src.addr, sizeof(sc->sc_dest.addr));
hendrikvincent 0:05ccbd4f84f1 509 sys_untimeout(pppoe_timeout, sc);
hendrikvincent 0:05ccbd4f84f1 510 sc->sc_padr_retried = 0;
hendrikvincent 0:05ccbd4f84f1 511 sc->sc_state = PPPOE_STATE_PADR_SENT;
hendrikvincent 0:05ccbd4f84f1 512 if ((err = pppoe_send_padr(sc)) != 0) {
hendrikvincent 0:05ccbd4f84f1 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));
hendrikvincent 0:05ccbd4f84f1 514 }
hendrikvincent 0:05ccbd4f84f1 515 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
hendrikvincent 0:05ccbd4f84f1 516 break;
hendrikvincent 0:05ccbd4f84f1 517 case PPPOE_CODE_PADS:
hendrikvincent 0:05ccbd4f84f1 518 if (sc == NULL) {
hendrikvincent 0:05ccbd4f84f1 519 goto done;
hendrikvincent 0:05ccbd4f84f1 520 }
hendrikvincent 0:05ccbd4f84f1 521 sc->sc_session = session;
hendrikvincent 0:05ccbd4f84f1 522 sys_untimeout(pppoe_timeout, sc);
hendrikvincent 0:05ccbd4f84f1 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));
hendrikvincent 0:05ccbd4f84f1 524 sc->sc_state = PPPOE_STATE_SESSION;
hendrikvincent 0:05ccbd4f84f1 525 pppoe_linkstatus_up(sc); /* notify upper layers */
hendrikvincent 0:05ccbd4f84f1 526 break;
hendrikvincent 0:05ccbd4f84f1 527 case PPPOE_CODE_PADT:
hendrikvincent 0:05ccbd4f84f1 528 if (sc == NULL) {
hendrikvincent 0:05ccbd4f84f1 529 goto done;
hendrikvincent 0:05ccbd4f84f1 530 }
hendrikvincent 0:05ccbd4f84f1 531 pppoe_clear_softc(sc, "received PADT");
hendrikvincent 0:05ccbd4f84f1 532 break;
hendrikvincent 0:05ccbd4f84f1 533 default:
hendrikvincent 0:05ccbd4f84f1 534 if(sc) {
hendrikvincent 0:05ccbd4f84f1 535 printf("%c%c%"U16_F": unknown code (0x%"X16_F") session = 0x%"X16_F"\n",
hendrikvincent 0:05ccbd4f84f1 536 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
hendrikvincent 0:05ccbd4f84f1 537 (u16_t)ph->code, session);
hendrikvincent 0:05ccbd4f84f1 538 } else {
hendrikvincent 0:05ccbd4f84f1 539 printf("pppoe: unknown code (0x%"X16_F") session = 0x%"X16_F"\n", (u16_t)ph->code, session);
hendrikvincent 0:05ccbd4f84f1 540 }
hendrikvincent 0:05ccbd4f84f1 541 break;
hendrikvincent 0:05ccbd4f84f1 542 }
hendrikvincent 0:05ccbd4f84f1 543
hendrikvincent 0:05ccbd4f84f1 544 done:
hendrikvincent 0:05ccbd4f84f1 545 pbuf_free(pb);
hendrikvincent 0:05ccbd4f84f1 546 return;
hendrikvincent 0:05ccbd4f84f1 547 }
hendrikvincent 0:05ccbd4f84f1 548
hendrikvincent 0:05ccbd4f84f1 549 void
hendrikvincent 0:05ccbd4f84f1 550 pppoe_disc_input(struct netif *netif, struct pbuf *p)
hendrikvincent 0:05ccbd4f84f1 551 {
hendrikvincent 0:05ccbd4f84f1 552 /* avoid error messages if there is not a single pppoe instance */
hendrikvincent 0:05ccbd4f84f1 553 if (pppoe_softc_list != NULL) {
hendrikvincent 0:05ccbd4f84f1 554 pppoe_dispatch_disc_pkt(netif, p);
hendrikvincent 0:05ccbd4f84f1 555 } else {
hendrikvincent 0:05ccbd4f84f1 556 pbuf_free(p);
hendrikvincent 0:05ccbd4f84f1 557 }
hendrikvincent 0:05ccbd4f84f1 558 }
hendrikvincent 0:05ccbd4f84f1 559
hendrikvincent 0:05ccbd4f84f1 560 void
hendrikvincent 0:05ccbd4f84f1 561 pppoe_data_input(struct netif *netif, struct pbuf *pb)
hendrikvincent 0:05ccbd4f84f1 562 {
hendrikvincent 0:05ccbd4f84f1 563 u16_t session, plen;
hendrikvincent 0:05ccbd4f84f1 564 struct pppoe_softc *sc;
hendrikvincent 0:05ccbd4f84f1 565 struct pppoehdr *ph;
hendrikvincent 0:05ccbd4f84f1 566 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
hendrikvincent 0:05ccbd4f84f1 567 u8_t shost[ETHER_ADDR_LEN];
hendrikvincent 0:05ccbd4f84f1 568 #endif
hendrikvincent 0:05ccbd4f84f1 569
hendrikvincent 0:05ccbd4f84f1 570 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
hendrikvincent 0:05ccbd4f84f1 571 MEMCPY(shost, ((struct eth_hdr *)pb->payload)->src.addr, sizeof(shost));
hendrikvincent 0:05ccbd4f84f1 572 #endif
hendrikvincent 0:05ccbd4f84f1 573 if (pbuf_header(pb, -(int)sizeof(struct eth_hdr)) != 0) {
hendrikvincent 0:05ccbd4f84f1 574 /* bail out */
hendrikvincent 0:05ccbd4f84f1 575 PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header failed\n"));
hendrikvincent 0:05ccbd4f84f1 576 LINK_STATS_INC(link.lenerr);
hendrikvincent 0:05ccbd4f84f1 577 goto drop;
hendrikvincent 0:05ccbd4f84f1 578 }
hendrikvincent 0:05ccbd4f84f1 579
hendrikvincent 0:05ccbd4f84f1 580 pb = pppSingleBuf (pb);
hendrikvincent 0:05ccbd4f84f1 581
hendrikvincent 0:05ccbd4f84f1 582 if (pb->len <= PPPOE_HEADERLEN) {
hendrikvincent 0:05ccbd4f84f1 583 printf("pppoe (data): dropping too short packet: %d bytes\n", pb->len);
hendrikvincent 0:05ccbd4f84f1 584 goto drop;
hendrikvincent 0:05ccbd4f84f1 585 }
hendrikvincent 0:05ccbd4f84f1 586
hendrikvincent 0:05ccbd4f84f1 587 if (pb->len < sizeof(*ph)) {
hendrikvincent 0:05ccbd4f84f1 588 printf("pppoe_data_input: could not get PPPoE header\n");
hendrikvincent 0:05ccbd4f84f1 589 goto drop;
hendrikvincent 0:05ccbd4f84f1 590 }
hendrikvincent 0:05ccbd4f84f1 591 ph = (struct pppoehdr *)pb->payload;
hendrikvincent 0:05ccbd4f84f1 592
hendrikvincent 0:05ccbd4f84f1 593 if (ph->vertype != PPPOE_VERTYPE) {
hendrikvincent 0:05ccbd4f84f1 594 printf("pppoe (data): unknown version/type packet: 0x%x\n", ph->vertype);
hendrikvincent 0:05ccbd4f84f1 595 goto drop;
hendrikvincent 0:05ccbd4f84f1 596 }
hendrikvincent 0:05ccbd4f84f1 597 if (ph->code != 0) {
hendrikvincent 0:05ccbd4f84f1 598 goto drop;
hendrikvincent 0:05ccbd4f84f1 599 }
hendrikvincent 0:05ccbd4f84f1 600
hendrikvincent 0:05ccbd4f84f1 601 session = ntohs(ph->session);
hendrikvincent 0:05ccbd4f84f1 602 sc = pppoe_find_softc_by_session(session, netif);
hendrikvincent 0:05ccbd4f84f1 603 if (sc == NULL) {
hendrikvincent 0:05ccbd4f84f1 604 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
hendrikvincent 0:05ccbd4f84f1 605 printf("pppoe: input for unknown session 0x%x, sending PADT\n", session);
hendrikvincent 0:05ccbd4f84f1 606 pppoe_send_padt(netif, session, shost);
hendrikvincent 0:05ccbd4f84f1 607 #endif
hendrikvincent 0:05ccbd4f84f1 608 goto drop;
hendrikvincent 0:05ccbd4f84f1 609 }
hendrikvincent 0:05ccbd4f84f1 610
hendrikvincent 0:05ccbd4f84f1 611 plen = ntohs(ph->plen);
hendrikvincent 0:05ccbd4f84f1 612
hendrikvincent 0:05ccbd4f84f1 613 if (pbuf_header(pb, -(int)(PPPOE_HEADERLEN)) != 0) {
hendrikvincent 0:05ccbd4f84f1 614 /* bail out */
hendrikvincent 0:05ccbd4f84f1 615 PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header PPPOE_HEADERLEN failed\n"));
hendrikvincent 0:05ccbd4f84f1 616 LINK_STATS_INC(link.lenerr);
hendrikvincent 0:05ccbd4f84f1 617 goto drop;
hendrikvincent 0:05ccbd4f84f1 618 }
hendrikvincent 0:05ccbd4f84f1 619
hendrikvincent 0:05ccbd4f84f1 620 PPPDEBUG(LOG_DEBUG, ("pppoe_data_input: %c%c%"U16_F": pkthdr.len=%d, pppoe.len=%d\n",
hendrikvincent 0:05ccbd4f84f1 621 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
hendrikvincent 0:05ccbd4f84f1 622 pb->len, plen));
hendrikvincent 0:05ccbd4f84f1 623
hendrikvincent 0:05ccbd4f84f1 624 if (pb->len < plen) {
hendrikvincent 0:05ccbd4f84f1 625 goto drop;
hendrikvincent 0:05ccbd4f84f1 626 }
hendrikvincent 0:05ccbd4f84f1 627
hendrikvincent 0:05ccbd4f84f1 628 pppInProcOverEthernet(sc->sc_pd, pb);
hendrikvincent 0:05ccbd4f84f1 629
hendrikvincent 0:05ccbd4f84f1 630 return;
hendrikvincent 0:05ccbd4f84f1 631
hendrikvincent 0:05ccbd4f84f1 632 drop:
hendrikvincent 0:05ccbd4f84f1 633 pbuf_free(pb);
hendrikvincent 0:05ccbd4f84f1 634 }
hendrikvincent 0:05ccbd4f84f1 635
hendrikvincent 0:05ccbd4f84f1 636 static err_t
hendrikvincent 0:05ccbd4f84f1 637 pppoe_output(struct pppoe_softc *sc, struct pbuf *pb)
hendrikvincent 0:05ccbd4f84f1 638 {
hendrikvincent 0:05ccbd4f84f1 639 struct eth_hdr *ethhdr;
hendrikvincent 0:05ccbd4f84f1 640 u16_t etype;
hendrikvincent 0:05ccbd4f84f1 641 err_t res;
hendrikvincent 0:05ccbd4f84f1 642
hendrikvincent 0:05ccbd4f84f1 643 if (!sc->sc_ethif) {
hendrikvincent 0:05ccbd4f84f1 644 pbuf_free(pb);
hendrikvincent 0:05ccbd4f84f1 645 return ERR_IF;
hendrikvincent 0:05ccbd4f84f1 646 }
hendrikvincent 0:05ccbd4f84f1 647
hendrikvincent 0:05ccbd4f84f1 648 ethhdr = (struct eth_hdr *)pb->payload;
hendrikvincent 0:05ccbd4f84f1 649 etype = sc->sc_state == PPPOE_STATE_SESSION ? ETHTYPE_PPPOE : ETHTYPE_PPPOEDISC;
hendrikvincent 0:05ccbd4f84f1 650 ethhdr->type = htons(etype);
hendrikvincent 0:05ccbd4f84f1 651 MEMCPY(ethhdr->dest.addr, sc->sc_dest.addr, sizeof(ethhdr->dest.addr));
hendrikvincent 0:05ccbd4f84f1 652 MEMCPY(ethhdr->src.addr, ((struct eth_addr *)sc->sc_ethif->hwaddr)->addr, sizeof(ethhdr->src.addr));
hendrikvincent 0:05ccbd4f84f1 653
hendrikvincent 0:05ccbd4f84f1 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",
hendrikvincent 0:05ccbd4f84f1 655 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, etype,
hendrikvincent 0:05ccbd4f84f1 656 sc->sc_state, sc->sc_session,
hendrikvincent 0:05ccbd4f84f1 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],
hendrikvincent 0:05ccbd4f84f1 658 pb->tot_len));
hendrikvincent 0:05ccbd4f84f1 659
hendrikvincent 0:05ccbd4f84f1 660 res = sc->sc_ethif->linkoutput(sc->sc_ethif, pb);
hendrikvincent 0:05ccbd4f84f1 661
hendrikvincent 0:05ccbd4f84f1 662 pbuf_free(pb);
hendrikvincent 0:05ccbd4f84f1 663
hendrikvincent 0:05ccbd4f84f1 664 return res;
hendrikvincent 0:05ccbd4f84f1 665 }
hendrikvincent 0:05ccbd4f84f1 666
hendrikvincent 0:05ccbd4f84f1 667 static err_t
hendrikvincent 0:05ccbd4f84f1 668 pppoe_send_padi(struct pppoe_softc *sc)
hendrikvincent 0:05ccbd4f84f1 669 {
hendrikvincent 0:05ccbd4f84f1 670 struct pbuf *pb;
hendrikvincent 0:05ccbd4f84f1 671 u8_t *p;
hendrikvincent 0:05ccbd4f84f1 672 int len;
hendrikvincent 0:05ccbd4f84f1 673 #ifdef PPPOE_TODO
hendrikvincent 0:05ccbd4f84f1 674 int l1 = 0, l2 = 0; /* XXX: gcc */
hendrikvincent 0:05ccbd4f84f1 675 #endif /* PPPOE_TODO */
hendrikvincent 0:05ccbd4f84f1 676
hendrikvincent 0:05ccbd4f84f1 677 if (sc->sc_state >PPPOE_STATE_PADI_SENT) {
hendrikvincent 0:05ccbd4f84f1 678 PPPDEBUG(LOG_ERR, ("ERROR: pppoe_send_padi in state %d", sc->sc_state));
hendrikvincent 0:05ccbd4f84f1 679 }
hendrikvincent 0:05ccbd4f84f1 680
hendrikvincent 0:05ccbd4f84f1 681 /* calculate length of frame (excluding ethernet header + pppoe header) */
hendrikvincent 0:05ccbd4f84f1 682 len = 2 + 2 + 2 + 2 + sizeof sc; /* service name tag is required, host unique is send too */
hendrikvincent 0:05ccbd4f84f1 683 #ifdef PPPOE_TODO
hendrikvincent 0:05ccbd4f84f1 684 if (sc->sc_service_name != NULL) {
hendrikvincent 0:05ccbd4f84f1 685 l1 = (int)strlen(sc->sc_service_name);
hendrikvincent 0:05ccbd4f84f1 686 len += l1;
hendrikvincent 0:05ccbd4f84f1 687 }
hendrikvincent 0:05ccbd4f84f1 688 if (sc->sc_concentrator_name != NULL) {
hendrikvincent 0:05ccbd4f84f1 689 l2 = (int)strlen(sc->sc_concentrator_name);
hendrikvincent 0:05ccbd4f84f1 690 len += 2 + 2 + l2;
hendrikvincent 0:05ccbd4f84f1 691 }
hendrikvincent 0:05ccbd4f84f1 692 #endif /* PPPOE_TODO */
hendrikvincent 0:05ccbd4f84f1 693 LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
hendrikvincent 0:05ccbd4f84f1 694 sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
hendrikvincent 0:05ccbd4f84f1 695
hendrikvincent 0:05ccbd4f84f1 696 /* allocate a buffer */
hendrikvincent 0:05ccbd4f84f1 697 pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
hendrikvincent 0:05ccbd4f84f1 698 if (!pb) {
hendrikvincent 0:05ccbd4f84f1 699 return ERR_MEM;
hendrikvincent 0:05ccbd4f84f1 700 }
hendrikvincent 0:05ccbd4f84f1 701 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
hendrikvincent 0:05ccbd4f84f1 702
hendrikvincent 0:05ccbd4f84f1 703 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
hendrikvincent 0:05ccbd4f84f1 704 /* fill in pkt */
hendrikvincent 0:05ccbd4f84f1 705 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADI, 0, (u16_t)len);
hendrikvincent 0:05ccbd4f84f1 706 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
hendrikvincent 0:05ccbd4f84f1 707 #ifdef PPPOE_TODO
hendrikvincent 0:05ccbd4f84f1 708 if (sc->sc_service_name != NULL) {
hendrikvincent 0:05ccbd4f84f1 709 PPPOE_ADD_16(p, l1);
hendrikvincent 0:05ccbd4f84f1 710 MEMCPY(p, sc->sc_service_name, l1);
hendrikvincent 0:05ccbd4f84f1 711 p += l1;
hendrikvincent 0:05ccbd4f84f1 712 } else
hendrikvincent 0:05ccbd4f84f1 713 #endif /* PPPOE_TODO */
hendrikvincent 0:05ccbd4f84f1 714 {
hendrikvincent 0:05ccbd4f84f1 715 PPPOE_ADD_16(p, 0);
hendrikvincent 0:05ccbd4f84f1 716 }
hendrikvincent 0:05ccbd4f84f1 717 #ifdef PPPOE_TODO
hendrikvincent 0:05ccbd4f84f1 718 if (sc->sc_concentrator_name != NULL) {
hendrikvincent 0:05ccbd4f84f1 719 PPPOE_ADD_16(p, PPPOE_TAG_ACNAME);
hendrikvincent 0:05ccbd4f84f1 720 PPPOE_ADD_16(p, l2);
hendrikvincent 0:05ccbd4f84f1 721 MEMCPY(p, sc->sc_concentrator_name, l2);
hendrikvincent 0:05ccbd4f84f1 722 p += l2;
hendrikvincent 0:05ccbd4f84f1 723 }
hendrikvincent 0:05ccbd4f84f1 724 #endif /* PPPOE_TODO */
hendrikvincent 0:05ccbd4f84f1 725 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
hendrikvincent 0:05ccbd4f84f1 726 PPPOE_ADD_16(p, sizeof(sc));
hendrikvincent 0:05ccbd4f84f1 727 MEMCPY(p, &sc, sizeof sc);
hendrikvincent 0:05ccbd4f84f1 728
hendrikvincent 0:05ccbd4f84f1 729 /* send pkt */
hendrikvincent 0:05ccbd4f84f1 730 return pppoe_output(sc, pb);
hendrikvincent 0:05ccbd4f84f1 731 }
hendrikvincent 0:05ccbd4f84f1 732
hendrikvincent 0:05ccbd4f84f1 733 static void
hendrikvincent 0:05ccbd4f84f1 734 pppoe_timeout(void *arg)
hendrikvincent 0:05ccbd4f84f1 735 {
hendrikvincent 0:05ccbd4f84f1 736 int retry_wait, err;
hendrikvincent 0:05ccbd4f84f1 737 struct pppoe_softc *sc = (struct pppoe_softc*)arg;
hendrikvincent 0:05ccbd4f84f1 738
hendrikvincent 0:05ccbd4f84f1 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));
hendrikvincent 0:05ccbd4f84f1 740
hendrikvincent 0:05ccbd4f84f1 741 switch (sc->sc_state) {
hendrikvincent 0:05ccbd4f84f1 742 case PPPOE_STATE_PADI_SENT:
hendrikvincent 0:05ccbd4f84f1 743 /*
hendrikvincent 0:05ccbd4f84f1 744 * We have two basic ways of retrying:
hendrikvincent 0:05ccbd4f84f1 745 * - Quick retry mode: try a few times in short sequence
hendrikvincent 0:05ccbd4f84f1 746 * - Slow retry mode: we already had a connection successfully
hendrikvincent 0:05ccbd4f84f1 747 * established and will try infinitely (without user
hendrikvincent 0:05ccbd4f84f1 748 * intervention)
hendrikvincent 0:05ccbd4f84f1 749 * We only enter slow retry mode if IFF_LINK1 (aka autodial)
hendrikvincent 0:05ccbd4f84f1 750 * is not set.
hendrikvincent 0:05ccbd4f84f1 751 */
hendrikvincent 0:05ccbd4f84f1 752
hendrikvincent 0:05ccbd4f84f1 753 /* initialize for quick retry mode */
hendrikvincent 0:05ccbd4f84f1 754 retry_wait = PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried);
hendrikvincent 0:05ccbd4f84f1 755
hendrikvincent 0:05ccbd4f84f1 756 sc->sc_padi_retried++;
hendrikvincent 0:05ccbd4f84f1 757 if (sc->sc_padi_retried >= PPPOE_DISC_MAXPADI) {
hendrikvincent 0:05ccbd4f84f1 758 #if 0
hendrikvincent 0:05ccbd4f84f1 759 if ((sc->sc_sppp.pp_if.if_flags & IFF_LINK1) == 0) {
hendrikvincent 0:05ccbd4f84f1 760 /* slow retry mode */
hendrikvincent 0:05ccbd4f84f1 761 retry_wait = PPPOE_SLOW_RETRY;
hendrikvincent 0:05ccbd4f84f1 762 } else
hendrikvincent 0:05ccbd4f84f1 763 #endif
hendrikvincent 0:05ccbd4f84f1 764 {
hendrikvincent 0:05ccbd4f84f1 765 pppoe_abort_connect(sc);
hendrikvincent 0:05ccbd4f84f1 766 return;
hendrikvincent 0:05ccbd4f84f1 767 }
hendrikvincent 0:05ccbd4f84f1 768 }
hendrikvincent 0:05ccbd4f84f1 769 if ((err = pppoe_send_padi(sc)) != 0) {
hendrikvincent 0:05ccbd4f84f1 770 sc->sc_padi_retried--;
hendrikvincent 0:05ccbd4f84f1 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));
hendrikvincent 0:05ccbd4f84f1 772 }
hendrikvincent 0:05ccbd4f84f1 773 sys_timeout(retry_wait, pppoe_timeout, sc);
hendrikvincent 0:05ccbd4f84f1 774 break;
hendrikvincent 0:05ccbd4f84f1 775
hendrikvincent 0:05ccbd4f84f1 776 case PPPOE_STATE_PADR_SENT:
hendrikvincent 0:05ccbd4f84f1 777 sc->sc_padr_retried++;
hendrikvincent 0:05ccbd4f84f1 778 if (sc->sc_padr_retried >= PPPOE_DISC_MAXPADR) {
hendrikvincent 0:05ccbd4f84f1 779 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
hendrikvincent 0:05ccbd4f84f1 780 sc->sc_state = PPPOE_STATE_PADI_SENT;
hendrikvincent 0:05ccbd4f84f1 781 sc->sc_padr_retried = 0;
hendrikvincent 0:05ccbd4f84f1 782 if ((err = pppoe_send_padi(sc)) != 0) {
hendrikvincent 0:05ccbd4f84f1 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));
hendrikvincent 0:05ccbd4f84f1 784 }
hendrikvincent 0:05ccbd4f84f1 785 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried), pppoe_timeout, sc);
hendrikvincent 0:05ccbd4f84f1 786 return;
hendrikvincent 0:05ccbd4f84f1 787 }
hendrikvincent 0:05ccbd4f84f1 788 if ((err = pppoe_send_padr(sc)) != 0) {
hendrikvincent 0:05ccbd4f84f1 789 sc->sc_padr_retried--;
hendrikvincent 0:05ccbd4f84f1 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));
hendrikvincent 0:05ccbd4f84f1 791 }
hendrikvincent 0:05ccbd4f84f1 792 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
hendrikvincent 0:05ccbd4f84f1 793 break;
hendrikvincent 0:05ccbd4f84f1 794 case PPPOE_STATE_CLOSING:
hendrikvincent 0:05ccbd4f84f1 795 pppoe_do_disconnect(sc);
hendrikvincent 0:05ccbd4f84f1 796 break;
hendrikvincent 0:05ccbd4f84f1 797 default:
hendrikvincent 0:05ccbd4f84f1 798 return; /* all done, work in peace */
hendrikvincent 0:05ccbd4f84f1 799 }
hendrikvincent 0:05ccbd4f84f1 800 }
hendrikvincent 0:05ccbd4f84f1 801
hendrikvincent 0:05ccbd4f84f1 802 /* Start a connection (i.e. initiate discovery phase) */
hendrikvincent 0:05ccbd4f84f1 803 int
hendrikvincent 0:05ccbd4f84f1 804 pppoe_connect(struct pppoe_softc *sc)
hendrikvincent 0:05ccbd4f84f1 805 {
hendrikvincent 0:05ccbd4f84f1 806 int err;
hendrikvincent 0:05ccbd4f84f1 807
hendrikvincent 0:05ccbd4f84f1 808 if (sc->sc_state != PPPOE_STATE_INITIAL) {
hendrikvincent 0:05ccbd4f84f1 809 return EBUSY;
hendrikvincent 0:05ccbd4f84f1 810 }
hendrikvincent 0:05ccbd4f84f1 811
hendrikvincent 0:05ccbd4f84f1 812 #ifdef PPPOE_SERVER
hendrikvincent 0:05ccbd4f84f1 813 /* wait PADI if IFF_PASSIVE */
hendrikvincent 0:05ccbd4f84f1 814 if ((sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
hendrikvincent 0:05ccbd4f84f1 815 return 0;
hendrikvincent 0:05ccbd4f84f1 816 }
hendrikvincent 0:05ccbd4f84f1 817 #endif
hendrikvincent 0:05ccbd4f84f1 818 /* save state, in case we fail to send PADI */
hendrikvincent 0:05ccbd4f84f1 819 sc->sc_state = PPPOE_STATE_PADI_SENT;
hendrikvincent 0:05ccbd4f84f1 820 sc->sc_padr_retried = 0;
hendrikvincent 0:05ccbd4f84f1 821 err = pppoe_send_padi(sc);
hendrikvincent 0:05ccbd4f84f1 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));
hendrikvincent 0:05ccbd4f84f1 823 sys_timeout(PPPOE_DISC_TIMEOUT, pppoe_timeout, sc);
hendrikvincent 0:05ccbd4f84f1 824 return err;
hendrikvincent 0:05ccbd4f84f1 825 }
hendrikvincent 0:05ccbd4f84f1 826
hendrikvincent 0:05ccbd4f84f1 827 /* disconnect */
hendrikvincent 0:05ccbd4f84f1 828 void
hendrikvincent 0:05ccbd4f84f1 829 pppoe_disconnect(struct pppoe_softc *sc)
hendrikvincent 0:05ccbd4f84f1 830 {
hendrikvincent 0:05ccbd4f84f1 831 if (sc->sc_state < PPPOE_STATE_SESSION) {
hendrikvincent 0:05ccbd4f84f1 832 return;
hendrikvincent 0:05ccbd4f84f1 833 }
hendrikvincent 0:05ccbd4f84f1 834 /*
hendrikvincent 0:05ccbd4f84f1 835 * Do not call pppoe_disconnect here, the upper layer state
hendrikvincent 0:05ccbd4f84f1 836 * machine gets confused by this. We must return from this
hendrikvincent 0:05ccbd4f84f1 837 * function and defer disconnecting to the timeout handler.
hendrikvincent 0:05ccbd4f84f1 838 */
hendrikvincent 0:05ccbd4f84f1 839 sc->sc_state = PPPOE_STATE_CLOSING;
hendrikvincent 0:05ccbd4f84f1 840 sys_timeout(20, pppoe_timeout, sc);
hendrikvincent 0:05ccbd4f84f1 841 }
hendrikvincent 0:05ccbd4f84f1 842
hendrikvincent 0:05ccbd4f84f1 843 static int
hendrikvincent 0:05ccbd4f84f1 844 pppoe_do_disconnect(struct pppoe_softc *sc)
hendrikvincent 0:05ccbd4f84f1 845 {
hendrikvincent 0:05ccbd4f84f1 846 int err;
hendrikvincent 0:05ccbd4f84f1 847
hendrikvincent 0:05ccbd4f84f1 848 if (sc->sc_state < PPPOE_STATE_SESSION) {
hendrikvincent 0:05ccbd4f84f1 849 err = EBUSY;
hendrikvincent 0:05ccbd4f84f1 850 } else {
hendrikvincent 0:05ccbd4f84f1 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));
hendrikvincent 0:05ccbd4f84f1 852 err = pppoe_send_padt(sc->sc_ethif, sc->sc_session, (const u8_t *)&sc->sc_dest);
hendrikvincent 0:05ccbd4f84f1 853 }
hendrikvincent 0:05ccbd4f84f1 854
hendrikvincent 0:05ccbd4f84f1 855 /* cleanup softc */
hendrikvincent 0:05ccbd4f84f1 856 sc->sc_state = PPPOE_STATE_INITIAL;
hendrikvincent 0:05ccbd4f84f1 857 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
hendrikvincent 0:05ccbd4f84f1 858 sc->sc_ac_cookie_len = 0;
hendrikvincent 0:05ccbd4f84f1 859 #ifdef PPPOE_SERVER
hendrikvincent 0:05ccbd4f84f1 860 if (sc->sc_hunique) {
hendrikvincent 0:05ccbd4f84f1 861 mem_free(sc->sc_hunique);
hendrikvincent 0:05ccbd4f84f1 862 sc->sc_hunique = NULL;
hendrikvincent 0:05ccbd4f84f1 863 }
hendrikvincent 0:05ccbd4f84f1 864 sc->sc_hunique_len = 0;
hendrikvincent 0:05ccbd4f84f1 865 #endif
hendrikvincent 0:05ccbd4f84f1 866 sc->sc_session = 0;
hendrikvincent 0:05ccbd4f84f1 867
hendrikvincent 0:05ccbd4f84f1 868 sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
hendrikvincent 0:05ccbd4f84f1 869
hendrikvincent 0:05ccbd4f84f1 870 return err;
hendrikvincent 0:05ccbd4f84f1 871 }
hendrikvincent 0:05ccbd4f84f1 872
hendrikvincent 0:05ccbd4f84f1 873 /* Connection attempt aborted */
hendrikvincent 0:05ccbd4f84f1 874 static void
hendrikvincent 0:05ccbd4f84f1 875 pppoe_abort_connect(struct pppoe_softc *sc)
hendrikvincent 0:05ccbd4f84f1 876 {
hendrikvincent 0:05ccbd4f84f1 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);
hendrikvincent 0:05ccbd4f84f1 878 sc->sc_state = PPPOE_STATE_CLOSING;
hendrikvincent 0:05ccbd4f84f1 879
hendrikvincent 0:05ccbd4f84f1 880 sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
hendrikvincent 0:05ccbd4f84f1 881
hendrikvincent 0:05ccbd4f84f1 882 /* clear connection state */
hendrikvincent 0:05ccbd4f84f1 883 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
hendrikvincent 0:05ccbd4f84f1 884 sc->sc_state = PPPOE_STATE_INITIAL;
hendrikvincent 0:05ccbd4f84f1 885 }
hendrikvincent 0:05ccbd4f84f1 886
hendrikvincent 0:05ccbd4f84f1 887 /* Send a PADR packet */
hendrikvincent 0:05ccbd4f84f1 888 static err_t
hendrikvincent 0:05ccbd4f84f1 889 pppoe_send_padr(struct pppoe_softc *sc)
hendrikvincent 0:05ccbd4f84f1 890 {
hendrikvincent 0:05ccbd4f84f1 891 struct pbuf *pb;
hendrikvincent 0:05ccbd4f84f1 892 u8_t *p;
hendrikvincent 0:05ccbd4f84f1 893 size_t len;
hendrikvincent 0:05ccbd4f84f1 894 #ifdef PPPOE_TODO
hendrikvincent 0:05ccbd4f84f1 895 size_t l1 = 0; /* XXX: gcc */
hendrikvincent 0:05ccbd4f84f1 896 #endif /* PPPOE_TODO */
hendrikvincent 0:05ccbd4f84f1 897
hendrikvincent 0:05ccbd4f84f1 898 if (sc->sc_state != PPPOE_STATE_PADR_SENT) {
hendrikvincent 0:05ccbd4f84f1 899 return ERR_CONN;
hendrikvincent 0:05ccbd4f84f1 900 }
hendrikvincent 0:05ccbd4f84f1 901
hendrikvincent 0:05ccbd4f84f1 902 len = 2 + 2 + 2 + 2 + sizeof(sc); /* service name, host unique */
hendrikvincent 0:05ccbd4f84f1 903 #ifdef PPPOE_TODO
hendrikvincent 0:05ccbd4f84f1 904 if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
hendrikvincent 0:05ccbd4f84f1 905 l1 = strlen(sc->sc_service_name);
hendrikvincent 0:05ccbd4f84f1 906 len += l1;
hendrikvincent 0:05ccbd4f84f1 907 }
hendrikvincent 0:05ccbd4f84f1 908 #endif /* PPPOE_TODO */
hendrikvincent 0:05ccbd4f84f1 909 if (sc->sc_ac_cookie_len > 0) {
hendrikvincent 0:05ccbd4f84f1 910 len += 2 + 2 + sc->sc_ac_cookie_len; /* AC cookie */
hendrikvincent 0:05ccbd4f84f1 911 }
hendrikvincent 0:05ccbd4f84f1 912 LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
hendrikvincent 0:05ccbd4f84f1 913 sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
hendrikvincent 0:05ccbd4f84f1 914 pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
hendrikvincent 0:05ccbd4f84f1 915 if (!pb) {
hendrikvincent 0:05ccbd4f84f1 916 return ERR_MEM;
hendrikvincent 0:05ccbd4f84f1 917 }
hendrikvincent 0:05ccbd4f84f1 918 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
hendrikvincent 0:05ccbd4f84f1 919 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
hendrikvincent 0:05ccbd4f84f1 920 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADR, 0, len);
hendrikvincent 0:05ccbd4f84f1 921 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
hendrikvincent 0:05ccbd4f84f1 922 #ifdef PPPOE_TODO
hendrikvincent 0:05ccbd4f84f1 923 if (sc->sc_service_name != NULL) {
hendrikvincent 0:05ccbd4f84f1 924 PPPOE_ADD_16(p, l1);
hendrikvincent 0:05ccbd4f84f1 925 MEMCPY(p, sc->sc_service_name, l1);
hendrikvincent 0:05ccbd4f84f1 926 p += l1;
hendrikvincent 0:05ccbd4f84f1 927 } else
hendrikvincent 0:05ccbd4f84f1 928 #endif /* PPPOE_TODO */
hendrikvincent 0:05ccbd4f84f1 929 {
hendrikvincent 0:05ccbd4f84f1 930 PPPOE_ADD_16(p, 0);
hendrikvincent 0:05ccbd4f84f1 931 }
hendrikvincent 0:05ccbd4f84f1 932 if (sc->sc_ac_cookie_len > 0) {
hendrikvincent 0:05ccbd4f84f1 933 PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
hendrikvincent 0:05ccbd4f84f1 934 PPPOE_ADD_16(p, sc->sc_ac_cookie_len);
hendrikvincent 0:05ccbd4f84f1 935 MEMCPY(p, sc->sc_ac_cookie, sc->sc_ac_cookie_len);
hendrikvincent 0:05ccbd4f84f1 936 p += sc->sc_ac_cookie_len;
hendrikvincent 0:05ccbd4f84f1 937 }
hendrikvincent 0:05ccbd4f84f1 938 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
hendrikvincent 0:05ccbd4f84f1 939 PPPOE_ADD_16(p, sizeof(sc));
hendrikvincent 0:05ccbd4f84f1 940 MEMCPY(p, &sc, sizeof sc);
hendrikvincent 0:05ccbd4f84f1 941
hendrikvincent 0:05ccbd4f84f1 942 return pppoe_output(sc, pb);
hendrikvincent 0:05ccbd4f84f1 943 }
hendrikvincent 0:05ccbd4f84f1 944
hendrikvincent 0:05ccbd4f84f1 945 /* send a PADT packet */
hendrikvincent 0:05ccbd4f84f1 946 static err_t
hendrikvincent 0:05ccbd4f84f1 947 pppoe_send_padt(struct netif *outgoing_if, u_int session, const u8_t *dest)
hendrikvincent 0:05ccbd4f84f1 948 {
hendrikvincent 0:05ccbd4f84f1 949 struct pbuf *pb;
hendrikvincent 0:05ccbd4f84f1 950 struct eth_hdr *ethhdr;
hendrikvincent 0:05ccbd4f84f1 951 err_t res;
hendrikvincent 0:05ccbd4f84f1 952 u8_t *p;
hendrikvincent 0:05ccbd4f84f1 953
hendrikvincent 0:05ccbd4f84f1 954 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN, PBUF_RAM);
hendrikvincent 0:05ccbd4f84f1 955 if (!pb) {
hendrikvincent 0:05ccbd4f84f1 956 return ERR_MEM;
hendrikvincent 0:05ccbd4f84f1 957 }
hendrikvincent 0:05ccbd4f84f1 958 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
hendrikvincent 0:05ccbd4f84f1 959
hendrikvincent 0:05ccbd4f84f1 960 ethhdr = (struct eth_hdr *)pb->payload;
hendrikvincent 0:05ccbd4f84f1 961 ethhdr->type = PP_HTONS(ETHTYPE_PPPOEDISC);
hendrikvincent 0:05ccbd4f84f1 962 MEMCPY(ethhdr->dest.addr, dest, sizeof(ethhdr->dest.addr));
hendrikvincent 0:05ccbd4f84f1 963 MEMCPY(ethhdr->src.addr, ((struct eth_addr *)outgoing_if->hwaddr)->addr, sizeof(ethhdr->src.addr));
hendrikvincent 0:05ccbd4f84f1 964
hendrikvincent 0:05ccbd4f84f1 965 p = (u8_t*)(ethhdr + 1);
hendrikvincent 0:05ccbd4f84f1 966 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADT, session, 0);
hendrikvincent 0:05ccbd4f84f1 967
hendrikvincent 0:05ccbd4f84f1 968 res = outgoing_if->linkoutput(outgoing_if, pb);
hendrikvincent 0:05ccbd4f84f1 969
hendrikvincent 0:05ccbd4f84f1 970 pbuf_free(pb);
hendrikvincent 0:05ccbd4f84f1 971
hendrikvincent 0:05ccbd4f84f1 972 return res;
hendrikvincent 0:05ccbd4f84f1 973 }
hendrikvincent 0:05ccbd4f84f1 974
hendrikvincent 0:05ccbd4f84f1 975 #ifdef PPPOE_SERVER
hendrikvincent 0:05ccbd4f84f1 976 static err_t
hendrikvincent 0:05ccbd4f84f1 977 pppoe_send_pado(struct pppoe_softc *sc)
hendrikvincent 0:05ccbd4f84f1 978 {
hendrikvincent 0:05ccbd4f84f1 979 struct pbuf *pb;
hendrikvincent 0:05ccbd4f84f1 980 u8_t *p;
hendrikvincent 0:05ccbd4f84f1 981 size_t len;
hendrikvincent 0:05ccbd4f84f1 982
hendrikvincent 0:05ccbd4f84f1 983 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
hendrikvincent 0:05ccbd4f84f1 984 return ERR_CONN;
hendrikvincent 0:05ccbd4f84f1 985 }
hendrikvincent 0:05ccbd4f84f1 986
hendrikvincent 0:05ccbd4f84f1 987 /* calc length */
hendrikvincent 0:05ccbd4f84f1 988 len = 0;
hendrikvincent 0:05ccbd4f84f1 989 /* include ac_cookie */
hendrikvincent 0:05ccbd4f84f1 990 len += 2 + 2 + sizeof(sc);
hendrikvincent 0:05ccbd4f84f1 991 /* include hunique */
hendrikvincent 0:05ccbd4f84f1 992 len += 2 + 2 + sc->sc_hunique_len;
hendrikvincent 0:05ccbd4f84f1 993 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
hendrikvincent 0:05ccbd4f84f1 994 if (!pb) {
hendrikvincent 0:05ccbd4f84f1 995 return ERR_MEM;
hendrikvincent 0:05ccbd4f84f1 996 }
hendrikvincent 0:05ccbd4f84f1 997 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
hendrikvincent 0:05ccbd4f84f1 998 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
hendrikvincent 0:05ccbd4f84f1 999 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADO, 0, len);
hendrikvincent 0:05ccbd4f84f1 1000 PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
hendrikvincent 0:05ccbd4f84f1 1001 PPPOE_ADD_16(p, sizeof(sc));
hendrikvincent 0:05ccbd4f84f1 1002 MEMCPY(p, &sc, sizeof(sc));
hendrikvincent 0:05ccbd4f84f1 1003 p += sizeof(sc);
hendrikvincent 0:05ccbd4f84f1 1004 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
hendrikvincent 0:05ccbd4f84f1 1005 PPPOE_ADD_16(p, sc->sc_hunique_len);
hendrikvincent 0:05ccbd4f84f1 1006 MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
hendrikvincent 0:05ccbd4f84f1 1007 return pppoe_output(sc, pb);
hendrikvincent 0:05ccbd4f84f1 1008 }
hendrikvincent 0:05ccbd4f84f1 1009
hendrikvincent 0:05ccbd4f84f1 1010 static err_t
hendrikvincent 0:05ccbd4f84f1 1011 pppoe_send_pads(struct pppoe_softc *sc)
hendrikvincent 0:05ccbd4f84f1 1012 {
hendrikvincent 0:05ccbd4f84f1 1013 struct pbuf *pb;
hendrikvincent 0:05ccbd4f84f1 1014 u8_t *p;
hendrikvincent 0:05ccbd4f84f1 1015 size_t len, l1 = 0; /* XXX: gcc */
hendrikvincent 0:05ccbd4f84f1 1016
hendrikvincent 0:05ccbd4f84f1 1017 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
hendrikvincent 0:05ccbd4f84f1 1018 return ERR_CONN;
hendrikvincent 0:05ccbd4f84f1 1019 }
hendrikvincent 0:05ccbd4f84f1 1020
hendrikvincent 0:05ccbd4f84f1 1021 sc->sc_session = mono_time.tv_sec % 0xff + 1;
hendrikvincent 0:05ccbd4f84f1 1022 /* calc length */
hendrikvincent 0:05ccbd4f84f1 1023 len = 0;
hendrikvincent 0:05ccbd4f84f1 1024 /* include hunique */
hendrikvincent 0:05ccbd4f84f1 1025 len += 2 + 2 + 2 + 2 + sc->sc_hunique_len; /* service name, host unique*/
hendrikvincent 0:05ccbd4f84f1 1026 if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
hendrikvincent 0:05ccbd4f84f1 1027 l1 = strlen(sc->sc_service_name);
hendrikvincent 0:05ccbd4f84f1 1028 len += l1;
hendrikvincent 0:05ccbd4f84f1 1029 }
hendrikvincent 0:05ccbd4f84f1 1030 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
hendrikvincent 0:05ccbd4f84f1 1031 if (!pb) {
hendrikvincent 0:05ccbd4f84f1 1032 return ERR_MEM;
hendrikvincent 0:05ccbd4f84f1 1033 }
hendrikvincent 0:05ccbd4f84f1 1034 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
hendrikvincent 0:05ccbd4f84f1 1035 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
hendrikvincent 0:05ccbd4f84f1 1036 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADS, sc->sc_session, len);
hendrikvincent 0:05ccbd4f84f1 1037 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
hendrikvincent 0:05ccbd4f84f1 1038 if (sc->sc_service_name != NULL) {
hendrikvincent 0:05ccbd4f84f1 1039 PPPOE_ADD_16(p, l1);
hendrikvincent 0:05ccbd4f84f1 1040 MEMCPY(p, sc->sc_service_name, l1);
hendrikvincent 0:05ccbd4f84f1 1041 p += l1;
hendrikvincent 0:05ccbd4f84f1 1042 } else {
hendrikvincent 0:05ccbd4f84f1 1043 PPPOE_ADD_16(p, 0);
hendrikvincent 0:05ccbd4f84f1 1044 }
hendrikvincent 0:05ccbd4f84f1 1045 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
hendrikvincent 0:05ccbd4f84f1 1046 PPPOE_ADD_16(p, sc->sc_hunique_len);
hendrikvincent 0:05ccbd4f84f1 1047 MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
hendrikvincent 0:05ccbd4f84f1 1048 return pppoe_output(sc, pb);
hendrikvincent 0:05ccbd4f84f1 1049 }
hendrikvincent 0:05ccbd4f84f1 1050 #endif
hendrikvincent 0:05ccbd4f84f1 1051
hendrikvincent 0:05ccbd4f84f1 1052 err_t
hendrikvincent 0:05ccbd4f84f1 1053 pppoe_xmit(struct pppoe_softc *sc, struct pbuf *pb)
hendrikvincent 0:05ccbd4f84f1 1054 {
hendrikvincent 0:05ccbd4f84f1 1055 u8_t *p;
hendrikvincent 0:05ccbd4f84f1 1056 size_t len;
hendrikvincent 0:05ccbd4f84f1 1057
hendrikvincent 0:05ccbd4f84f1 1058 /* are we ready to process data yet? */
hendrikvincent 0:05ccbd4f84f1 1059 if (sc->sc_state < PPPOE_STATE_SESSION) {
hendrikvincent 0:05ccbd4f84f1 1060 /*sppp_flush(&sc->sc_sppp.pp_if);*/
hendrikvincent 0:05ccbd4f84f1 1061 pbuf_free(pb);
hendrikvincent 0:05ccbd4f84f1 1062 return ERR_CONN;
hendrikvincent 0:05ccbd4f84f1 1063 }
hendrikvincent 0:05ccbd4f84f1 1064
hendrikvincent 0:05ccbd4f84f1 1065 len = pb->tot_len;
hendrikvincent 0:05ccbd4f84f1 1066
hendrikvincent 0:05ccbd4f84f1 1067 /* make room for Ethernet header - should not fail */
hendrikvincent 0:05ccbd4f84f1 1068 if (pbuf_header(pb, sizeof(struct eth_hdr) + PPPOE_HEADERLEN) != 0) {
hendrikvincent 0:05ccbd4f84f1 1069 /* bail out */
hendrikvincent 0:05ccbd4f84f1 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));
hendrikvincent 0:05ccbd4f84f1 1071 LINK_STATS_INC(link.lenerr);
hendrikvincent 0:05ccbd4f84f1 1072 pbuf_free(pb);
hendrikvincent 0:05ccbd4f84f1 1073 return ERR_BUF;
hendrikvincent 0:05ccbd4f84f1 1074 }
hendrikvincent 0:05ccbd4f84f1 1075
hendrikvincent 0:05ccbd4f84f1 1076 p = (u8_t*)pb->payload + sizeof(struct eth_hdr);
hendrikvincent 0:05ccbd4f84f1 1077 PPPOE_ADD_HEADER(p, 0, sc->sc_session, len);
hendrikvincent 0:05ccbd4f84f1 1078
hendrikvincent 0:05ccbd4f84f1 1079 return pppoe_output(sc, pb);
hendrikvincent 0:05ccbd4f84f1 1080 }
hendrikvincent 0:05ccbd4f84f1 1081
hendrikvincent 0:05ccbd4f84f1 1082 #if 0 /*def PFIL_HOOKS*/
hendrikvincent 0:05ccbd4f84f1 1083 static int
hendrikvincent 0:05ccbd4f84f1 1084 pppoe_ifattach_hook(void *arg, struct pbuf **mp, struct netif *ifp, int dir)
hendrikvincent 0:05ccbd4f84f1 1085 {
hendrikvincent 0:05ccbd4f84f1 1086 struct pppoe_softc *sc;
hendrikvincent 0:05ccbd4f84f1 1087 int s;
hendrikvincent 0:05ccbd4f84f1 1088
hendrikvincent 0:05ccbd4f84f1 1089 if (mp != (struct pbuf **)PFIL_IFNET_DETACH) {
hendrikvincent 0:05ccbd4f84f1 1090 return 0;
hendrikvincent 0:05ccbd4f84f1 1091 }
hendrikvincent 0:05ccbd4f84f1 1092
hendrikvincent 0:05ccbd4f84f1 1093 LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
hendrikvincent 0:05ccbd4f84f1 1094 if (sc->sc_ethif != ifp) {
hendrikvincent 0:05ccbd4f84f1 1095 continue;
hendrikvincent 0:05ccbd4f84f1 1096 }
hendrikvincent 0:05ccbd4f84f1 1097 if (sc->sc_sppp.pp_if.if_flags & IFF_UP) {
hendrikvincent 0:05ccbd4f84f1 1098 sc->sc_sppp.pp_if.if_flags &= ~(IFF_UP|IFF_RUNNING);
hendrikvincent 0:05ccbd4f84f1 1099 printf("%c%c%"U16_F": ethernet interface detached, going down\n",
hendrikvincent 0:05ccbd4f84f1 1100 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
hendrikvincent 0:05ccbd4f84f1 1101 }
hendrikvincent 0:05ccbd4f84f1 1102 sc->sc_ethif = NULL;
hendrikvincent 0:05ccbd4f84f1 1103 pppoe_clear_softc(sc, "ethernet interface detached");
hendrikvincent 0:05ccbd4f84f1 1104 }
hendrikvincent 0:05ccbd4f84f1 1105
hendrikvincent 0:05ccbd4f84f1 1106 return 0;
hendrikvincent 0:05ccbd4f84f1 1107 }
hendrikvincent 0:05ccbd4f84f1 1108 #endif
hendrikvincent 0:05ccbd4f84f1 1109
hendrikvincent 0:05ccbd4f84f1 1110 static void
hendrikvincent 0:05ccbd4f84f1 1111 pppoe_clear_softc(struct pppoe_softc *sc, const char *message)
hendrikvincent 0:05ccbd4f84f1 1112 {
hendrikvincent 0:05ccbd4f84f1 1113 LWIP_UNUSED_ARG(message);
hendrikvincent 0:05ccbd4f84f1 1114
hendrikvincent 0:05ccbd4f84f1 1115 /* stop timer */
hendrikvincent 0:05ccbd4f84f1 1116 sys_untimeout(pppoe_timeout, sc);
hendrikvincent 0:05ccbd4f84f1 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));
hendrikvincent 0:05ccbd4f84f1 1118
hendrikvincent 0:05ccbd4f84f1 1119 /* fix our state */
hendrikvincent 0:05ccbd4f84f1 1120 sc->sc_state = PPPOE_STATE_INITIAL;
hendrikvincent 0:05ccbd4f84f1 1121
hendrikvincent 0:05ccbd4f84f1 1122 /* notify upper layers */
hendrikvincent 0:05ccbd4f84f1 1123 sc->sc_linkStatusCB(sc->sc_pd, 0);
hendrikvincent 0:05ccbd4f84f1 1124
hendrikvincent 0:05ccbd4f84f1 1125 /* clean up softc */
hendrikvincent 0:05ccbd4f84f1 1126 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
hendrikvincent 0:05ccbd4f84f1 1127 sc->sc_ac_cookie_len = 0;
hendrikvincent 0:05ccbd4f84f1 1128 sc->sc_session = 0;
hendrikvincent 0:05ccbd4f84f1 1129 }
hendrikvincent 0:05ccbd4f84f1 1130
hendrikvincent 0:05ccbd4f84f1 1131 #endif /* PPPOE_SUPPORT */
hendrikvincent 0:05ccbd4f84f1 1132