Murat Kilivan / Mbed 2 deprecated HTMLServer_Sample

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   EthernetInterface HttpServer mbed-rpc mbed-rtos mbed

Fork of giken9_HTMLServer_Sample by Yasushi TAUCHI

EthernetInterface/lwip/netif/ppp/ppp_oe.c@0:7766f6712673, 2014-03-12 (annotated)

Committer:
yueee_yt
Date:
Wed Mar 12 04:19:54 2014 +0000
Revision:
0:7766f6712673
???????????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yueee_yt 0:7766f6712673 1 /*****************************************************************************
yueee_yt 0:7766f6712673 2 * ppp_oe.c - PPP Over Ethernet implementation for lwIP.
yueee_yt 0:7766f6712673 3 *
yueee_yt 0:7766f6712673 4 * Copyright (c) 2006 by Marc Boucher, Services Informatiques (MBSI) inc.
yueee_yt 0:7766f6712673 5 *
yueee_yt 0:7766f6712673 6 * The authors hereby grant permission to use, copy, modify, distribute,
yueee_yt 0:7766f6712673 7 * and license this software and its documentation for any purpose, provided
yueee_yt 0:7766f6712673 8 * that existing copyright notices are retained in all copies and that this
yueee_yt 0:7766f6712673 9 * notice and the following disclaimer are included verbatim in any
yueee_yt 0:7766f6712673 10 * distributions. No written agreement, license, or royalty fee is required
yueee_yt 0:7766f6712673 11 * for any of the authorized uses.
yueee_yt 0:7766f6712673 12 *
yueee_yt 0:7766f6712673 13 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
yueee_yt 0:7766f6712673 14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
yueee_yt 0:7766f6712673 15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
yueee_yt 0:7766f6712673 16 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
yueee_yt 0:7766f6712673 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
yueee_yt 0:7766f6712673 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
yueee_yt 0:7766f6712673 19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
yueee_yt 0:7766f6712673 20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
yueee_yt 0:7766f6712673 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
yueee_yt 0:7766f6712673 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
yueee_yt 0:7766f6712673 23 *
yueee_yt 0:7766f6712673 24 ******************************************************************************
yueee_yt 0:7766f6712673 25 * REVISION HISTORY
yueee_yt 0:7766f6712673 26 *
yueee_yt 0:7766f6712673 27 * 06-01-01 Marc Boucher <marc@mbsi.ca>
yueee_yt 0:7766f6712673 28 * Ported to lwIP.
yueee_yt 0:7766f6712673 29 *****************************************************************************/
yueee_yt 0:7766f6712673 30
yueee_yt 0:7766f6712673 31
yueee_yt 0:7766f6712673 32
yueee_yt 0:7766f6712673 33 /* based on NetBSD: if_pppoe.c,v 1.64 2006/01/31 23:50:15 martin Exp */
yueee_yt 0:7766f6712673 34
yueee_yt 0:7766f6712673 35 /*-
yueee_yt 0:7766f6712673 36 * Copyright (c) 2002 The NetBSD Foundation, Inc.
yueee_yt 0:7766f6712673 37 * All rights reserved.
yueee_yt 0:7766f6712673 38 *
yueee_yt 0:7766f6712673 39 * This code is derived from software contributed to The NetBSD Foundation
yueee_yt 0:7766f6712673 40 * by Martin Husemann <martin@NetBSD.org>.
yueee_yt 0:7766f6712673 41 *
yueee_yt 0:7766f6712673 42 * Redistribution and use in source and binary forms, with or without
yueee_yt 0:7766f6712673 43 * modification, are permitted provided that the following conditions
yueee_yt 0:7766f6712673 44 * are met:
yueee_yt 0:7766f6712673 45 * 1. Redistributions of source code must retain the above copyright
yueee_yt 0:7766f6712673 46 * notice, this list of conditions and the following disclaimer.
yueee_yt 0:7766f6712673 47 * 2. Redistributions in binary form must reproduce the above copyright
yueee_yt 0:7766f6712673 48 * notice, this list of conditions and the following disclaimer in the
yueee_yt 0:7766f6712673 49 * documentation and/or other materials provided with the distribution.
yueee_yt 0:7766f6712673 50 * 3. All advertising materials mentioning features or use of this software
yueee_yt 0:7766f6712673 51 * must display the following acknowledgement:
yueee_yt 0:7766f6712673 52 * This product includes software developed by the NetBSD
yueee_yt 0:7766f6712673 53 * Foundation, Inc. and its contributors.
yueee_yt 0:7766f6712673 54 * 4. Neither the name of The NetBSD Foundation nor the names of its
yueee_yt 0:7766f6712673 55 * contributors may be used to endorse or promote products derived
yueee_yt 0:7766f6712673 56 * from this software without specific prior written permission.
yueee_yt 0:7766f6712673 57 *
yueee_yt 0:7766f6712673 58 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
yueee_yt 0:7766f6712673 59 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
yueee_yt 0:7766f6712673 60 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
yueee_yt 0:7766f6712673 61 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
yueee_yt 0:7766f6712673 62 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
yueee_yt 0:7766f6712673 63 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
yueee_yt 0:7766f6712673 64 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
yueee_yt 0:7766f6712673 65 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
yueee_yt 0:7766f6712673 66 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
yueee_yt 0:7766f6712673 67 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
yueee_yt 0:7766f6712673 68 * POSSIBILITY OF SUCH DAMAGE.
yueee_yt 0:7766f6712673 69 */
yueee_yt 0:7766f6712673 70
yueee_yt 0:7766f6712673 71 #include "lwip/opt.h"
yueee_yt 0:7766f6712673 72
yueee_yt 0:7766f6712673 73 #if PPPOE_SUPPORT /* don't build if not configured for use in lwipopts.h */
yueee_yt 0:7766f6712673 74
yueee_yt 0:7766f6712673 75 #include "netif/ppp_oe.h"
yueee_yt 0:7766f6712673 76
yueee_yt 0:7766f6712673 77 #include "ppp.h"
yueee_yt 0:7766f6712673 78 #include "pppdebug.h"
yueee_yt 0:7766f6712673 79
yueee_yt 0:7766f6712673 80 #include "lwip/timers.h"
yueee_yt 0:7766f6712673 81 #include "lwip/memp.h"
yueee_yt 0:7766f6712673 82
yueee_yt 0:7766f6712673 83 #include <string.h>
yueee_yt 0:7766f6712673 84 #include <stdio.h>
yueee_yt 0:7766f6712673 85
yueee_yt 0:7766f6712673 86
yueee_yt 0:7766f6712673 87 /* Add a 16 bit unsigned value to a buffer pointed to by PTR */
yueee_yt 0:7766f6712673 88 #define PPPOE_ADD_16(PTR, VAL) \
yueee_yt 0:7766f6712673 89 *(PTR)++ = (u8_t)((VAL) / 256); \
yueee_yt 0:7766f6712673 90 *(PTR)++ = (u8_t)((VAL) % 256)
yueee_yt 0:7766f6712673 91
yueee_yt 0:7766f6712673 92 /* Add a complete PPPoE header to the buffer pointed to by PTR */
yueee_yt 0:7766f6712673 93 #define PPPOE_ADD_HEADER(PTR, CODE, SESS, LEN) \
yueee_yt 0:7766f6712673 94 *(PTR)++ = PPPOE_VERTYPE; \
yueee_yt 0:7766f6712673 95 *(PTR)++ = (CODE); \
yueee_yt 0:7766f6712673 96 PPPOE_ADD_16(PTR, SESS); \
yueee_yt 0:7766f6712673 97 PPPOE_ADD_16(PTR, LEN)
yueee_yt 0:7766f6712673 98
yueee_yt 0:7766f6712673 99 #define PPPOE_DISC_TIMEOUT (5*1000) /* base for quick timeout calculation */
yueee_yt 0:7766f6712673 100 #define PPPOE_SLOW_RETRY (60*1000) /* persistent retry interval */
yueee_yt 0:7766f6712673 101 #define PPPOE_DISC_MAXPADI 4 /* retry PADI four times (quickly) */
yueee_yt 0:7766f6712673 102 #define PPPOE_DISC_MAXPADR 2 /* retry PADR twice */
yueee_yt 0:7766f6712673 103
yueee_yt 0:7766f6712673 104 #ifdef PPPOE_SERVER
yueee_yt 0:7766f6712673 105 #error "PPPOE_SERVER is not yet supported under lwIP!"
yueee_yt 0:7766f6712673 106 /* from if_spppsubr.c */
yueee_yt 0:7766f6712673 107 #define IFF_PASSIVE IFF_LINK0 /* wait passively for connection */
yueee_yt 0:7766f6712673 108 #endif
yueee_yt 0:7766f6712673 109
yueee_yt 0:7766f6712673 110 #ifndef PPPOE_ERRORSTRING_LEN
yueee_yt 0:7766f6712673 111 #define PPPOE_ERRORSTRING_LEN 64
yueee_yt 0:7766f6712673 112 #endif
yueee_yt 0:7766f6712673 113 static char pppoe_error_tmp[PPPOE_ERRORSTRING_LEN];
yueee_yt 0:7766f6712673 114
yueee_yt 0:7766f6712673 115
yueee_yt 0:7766f6712673 116 /* input routines */
yueee_yt 0:7766f6712673 117 static void pppoe_dispatch_disc_pkt(struct netif *, struct pbuf *);
yueee_yt 0:7766f6712673 118
yueee_yt 0:7766f6712673 119 /* management routines */
yueee_yt 0:7766f6712673 120 static int pppoe_do_disconnect(struct pppoe_softc *);
yueee_yt 0:7766f6712673 121 static void pppoe_abort_connect(struct pppoe_softc *);
yueee_yt 0:7766f6712673 122 static void pppoe_clear_softc(struct pppoe_softc *, const char *);
yueee_yt 0:7766f6712673 123
yueee_yt 0:7766f6712673 124 /* internal timeout handling */
yueee_yt 0:7766f6712673 125 static void pppoe_timeout(void *);
yueee_yt 0:7766f6712673 126
yueee_yt 0:7766f6712673 127 /* sending actual protocol controll packets */
yueee_yt 0:7766f6712673 128 static err_t pppoe_send_padi(struct pppoe_softc *);
yueee_yt 0:7766f6712673 129 static err_t pppoe_send_padr(struct pppoe_softc *);
yueee_yt 0:7766f6712673 130 #ifdef PPPOE_SERVER
yueee_yt 0:7766f6712673 131 static err_t pppoe_send_pado(struct pppoe_softc *);
yueee_yt 0:7766f6712673 132 static err_t pppoe_send_pads(struct pppoe_softc *);
yueee_yt 0:7766f6712673 133 #endif
yueee_yt 0:7766f6712673 134 static err_t pppoe_send_padt(struct netif *, u_int, const u8_t *);
yueee_yt 0:7766f6712673 135
yueee_yt 0:7766f6712673 136 /* internal helper functions */
yueee_yt 0:7766f6712673 137 static struct pppoe_softc * pppoe_find_softc_by_session(u_int, struct netif *);
yueee_yt 0:7766f6712673 138 static struct pppoe_softc * pppoe_find_softc_by_hunique(u8_t *, size_t, struct netif *);
yueee_yt 0:7766f6712673 139
yueee_yt 0:7766f6712673 140 /** linked list of created pppoe interfaces */
yueee_yt 0:7766f6712673 141 static struct pppoe_softc *pppoe_softc_list;
yueee_yt 0:7766f6712673 142
yueee_yt 0:7766f6712673 143 err_t
yueee_yt 0:7766f6712673 144 pppoe_create(struct netif *ethif, int pd, void (*linkStatusCB)(int pd, int up), struct pppoe_softc **scptr)
yueee_yt 0:7766f6712673 145 {
yueee_yt 0:7766f6712673 146 struct pppoe_softc *sc;
yueee_yt 0:7766f6712673 147
yueee_yt 0:7766f6712673 148 sc = (struct pppoe_softc *)memp_malloc(MEMP_PPPOE_IF);
yueee_yt 0:7766f6712673 149 if (sc == NULL) {
yueee_yt 0:7766f6712673 150 *scptr = NULL;
yueee_yt 0:7766f6712673 151 return ERR_MEM;
yueee_yt 0:7766f6712673 152 }
yueee_yt 0:7766f6712673 153 memset(sc, 0, sizeof(struct pppoe_softc));
yueee_yt 0:7766f6712673 154
yueee_yt 0:7766f6712673 155 /* changed to real address later */
yueee_yt 0:7766f6712673 156 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
yueee_yt 0:7766f6712673 157
yueee_yt 0:7766f6712673 158 sc->sc_pd = pd;
yueee_yt 0:7766f6712673 159 sc->sc_linkStatusCB = linkStatusCB;
yueee_yt 0:7766f6712673 160 sc->sc_ethif = ethif;
yueee_yt 0:7766f6712673 161
yueee_yt 0:7766f6712673 162 /* put the new interface at the head of the list */
yueee_yt 0:7766f6712673 163 sc->next = pppoe_softc_list;
yueee_yt 0:7766f6712673 164 pppoe_softc_list = sc;
yueee_yt 0:7766f6712673 165
yueee_yt 0:7766f6712673 166 *scptr = sc;
yueee_yt 0:7766f6712673 167
yueee_yt 0:7766f6712673 168 return ERR_OK;
yueee_yt 0:7766f6712673 169 }
yueee_yt 0:7766f6712673 170
yueee_yt 0:7766f6712673 171 err_t
yueee_yt 0:7766f6712673 172 pppoe_destroy(struct netif *ifp)
yueee_yt 0:7766f6712673 173 {
yueee_yt 0:7766f6712673 174 struct pppoe_softc *sc, *prev = NULL;
yueee_yt 0:7766f6712673 175
yueee_yt 0:7766f6712673 176 for (sc = pppoe_softc_list; sc != NULL; prev = sc, sc = sc->next) {
yueee_yt 0:7766f6712673 177 if (sc->sc_ethif == ifp) {
yueee_yt 0:7766f6712673 178 break;
yueee_yt 0:7766f6712673 179 }
yueee_yt 0:7766f6712673 180 }
yueee_yt 0:7766f6712673 181
yueee_yt 0:7766f6712673 182 if(!(sc && (sc->sc_ethif == ifp))) {
yueee_yt 0:7766f6712673 183 return ERR_IF;
yueee_yt 0:7766f6712673 184 }
yueee_yt 0:7766f6712673 185
yueee_yt 0:7766f6712673 186 sys_untimeout(pppoe_timeout, sc);
yueee_yt 0:7766f6712673 187 if (prev == NULL) {
yueee_yt 0:7766f6712673 188 /* remove sc from the head of the list */
yueee_yt 0:7766f6712673 189 pppoe_softc_list = sc->next;
yueee_yt 0:7766f6712673 190 } else {
yueee_yt 0:7766f6712673 191 /* remove sc from the list */
yueee_yt 0:7766f6712673 192 prev->next = sc->next;
yueee_yt 0:7766f6712673 193 }
yueee_yt 0:7766f6712673 194
yueee_yt 0:7766f6712673 195 #ifdef PPPOE_TODO
yueee_yt 0:7766f6712673 196 if (sc->sc_concentrator_name) {
yueee_yt 0:7766f6712673 197 mem_free(sc->sc_concentrator_name);
yueee_yt 0:7766f6712673 198 }
yueee_yt 0:7766f6712673 199 if (sc->sc_service_name) {
yueee_yt 0:7766f6712673 200 mem_free(sc->sc_service_name);
yueee_yt 0:7766f6712673 201 }
yueee_yt 0:7766f6712673 202 #endif /* PPPOE_TODO */
yueee_yt 0:7766f6712673 203 memp_free(MEMP_PPPOE_IF, sc);
yueee_yt 0:7766f6712673 204
yueee_yt 0:7766f6712673 205 return ERR_OK;
yueee_yt 0:7766f6712673 206 }
yueee_yt 0:7766f6712673 207
yueee_yt 0:7766f6712673 208 /*
yueee_yt 0:7766f6712673 209 * Find the interface handling the specified session.
yueee_yt 0:7766f6712673 210 * Note: O(number of sessions open), this is a client-side only, mean
yueee_yt 0:7766f6712673 211 * and lean implementation, so number of open sessions typically should
yueee_yt 0:7766f6712673 212 * be 1.
yueee_yt 0:7766f6712673 213 */
yueee_yt 0:7766f6712673 214 static struct pppoe_softc *
yueee_yt 0:7766f6712673 215 pppoe_find_softc_by_session(u_int session, struct netif *rcvif)
yueee_yt 0:7766f6712673 216 {
yueee_yt 0:7766f6712673 217 struct pppoe_softc *sc;
yueee_yt 0:7766f6712673 218
yueee_yt 0:7766f6712673 219 if (session == 0) {
yueee_yt 0:7766f6712673 220 return NULL;
yueee_yt 0:7766f6712673 221 }
yueee_yt 0:7766f6712673 222
yueee_yt 0:7766f6712673 223 for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
yueee_yt 0:7766f6712673 224 if (sc->sc_state == PPPOE_STATE_SESSION
yueee_yt 0:7766f6712673 225 && sc->sc_session == session) {
yueee_yt 0:7766f6712673 226 if (sc->sc_ethif == rcvif) {
yueee_yt 0:7766f6712673 227 return sc;
yueee_yt 0:7766f6712673 228 } else {
yueee_yt 0:7766f6712673 229 return NULL;
yueee_yt 0:7766f6712673 230 }
yueee_yt 0:7766f6712673 231 }
yueee_yt 0:7766f6712673 232 }
yueee_yt 0:7766f6712673 233 return NULL;
yueee_yt 0:7766f6712673 234 }
yueee_yt 0:7766f6712673 235
yueee_yt 0:7766f6712673 236 /* Check host unique token passed and return appropriate softc pointer,
yueee_yt 0:7766f6712673 237 * or NULL if token is bogus. */
yueee_yt 0:7766f6712673 238 static struct pppoe_softc *
yueee_yt 0:7766f6712673 239 pppoe_find_softc_by_hunique(u8_t *token, size_t len, struct netif *rcvif)
yueee_yt 0:7766f6712673 240 {
yueee_yt 0:7766f6712673 241 struct pppoe_softc *sc, *t;
yueee_yt 0:7766f6712673 242
yueee_yt 0:7766f6712673 243 if (pppoe_softc_list == NULL) {
yueee_yt 0:7766f6712673 244 return NULL;
yueee_yt 0:7766f6712673 245 }
yueee_yt 0:7766f6712673 246
yueee_yt 0:7766f6712673 247 if (len != sizeof sc) {
yueee_yt 0:7766f6712673 248 return NULL;
yueee_yt 0:7766f6712673 249 }
yueee_yt 0:7766f6712673 250 MEMCPY(&t, token, len);
yueee_yt 0:7766f6712673 251
yueee_yt 0:7766f6712673 252 for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
yueee_yt 0:7766f6712673 253 if (sc == t) {
yueee_yt 0:7766f6712673 254 break;
yueee_yt 0:7766f6712673 255 }
yueee_yt 0:7766f6712673 256 }
yueee_yt 0:7766f6712673 257
yueee_yt 0:7766f6712673 258 if (sc == NULL) {
yueee_yt 0:7766f6712673 259 PPPDEBUG(LOG_DEBUG, ("pppoe: alien host unique tag, no session found\n"));
yueee_yt 0:7766f6712673 260 return NULL;
yueee_yt 0:7766f6712673 261 }
yueee_yt 0:7766f6712673 262
yueee_yt 0:7766f6712673 263 /* should be safe to access *sc now */
yueee_yt 0:7766f6712673 264 if (sc->sc_state < PPPOE_STATE_PADI_SENT || sc->sc_state >= PPPOE_STATE_SESSION) {
yueee_yt 0:7766f6712673 265 printf("%c%c%"U16_F": host unique tag found, but it belongs to a connection in state %d\n",
yueee_yt 0:7766f6712673 266 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, sc->sc_state);
yueee_yt 0:7766f6712673 267 return NULL;
yueee_yt 0:7766f6712673 268 }
yueee_yt 0:7766f6712673 269 if (sc->sc_ethif != rcvif) {
yueee_yt 0:7766f6712673 270 printf("%c%c%"U16_F": wrong interface, not accepting host unique\n",
yueee_yt 0:7766f6712673 271 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
yueee_yt 0:7766f6712673 272 return NULL;
yueee_yt 0:7766f6712673 273 }
yueee_yt 0:7766f6712673 274 return sc;
yueee_yt 0:7766f6712673 275 }
yueee_yt 0:7766f6712673 276
yueee_yt 0:7766f6712673 277 static void
yueee_yt 0:7766f6712673 278 pppoe_linkstatus_up(struct pppoe_softc *sc)
yueee_yt 0:7766f6712673 279 {
yueee_yt 0:7766f6712673 280 sc->sc_linkStatusCB(sc->sc_pd, 1);
yueee_yt 0:7766f6712673 281 }
yueee_yt 0:7766f6712673 282
yueee_yt 0:7766f6712673 283 /* analyze and handle a single received packet while not in session state */
yueee_yt 0:7766f6712673 284 static void
yueee_yt 0:7766f6712673 285 pppoe_dispatch_disc_pkt(struct netif *netif, struct pbuf *pb)
yueee_yt 0:7766f6712673 286 {
yueee_yt 0:7766f6712673 287 u16_t tag, len;
yueee_yt 0:7766f6712673 288 u16_t session, plen;
yueee_yt 0:7766f6712673 289 struct pppoe_softc *sc;
yueee_yt 0:7766f6712673 290 const char *err_msg;
yueee_yt 0:7766f6712673 291 char devname[6];
yueee_yt 0:7766f6712673 292 u8_t *ac_cookie;
yueee_yt 0:7766f6712673 293 u16_t ac_cookie_len;
yueee_yt 0:7766f6712673 294 #ifdef PPPOE_SERVER
yueee_yt 0:7766f6712673 295 u8_t *hunique;
yueee_yt 0:7766f6712673 296 size_t hunique_len;
yueee_yt 0:7766f6712673 297 #endif
yueee_yt 0:7766f6712673 298 struct pppoehdr *ph;
yueee_yt 0:7766f6712673 299 struct pppoetag pt;
yueee_yt 0:7766f6712673 300 int off, err, errortag;
yueee_yt 0:7766f6712673 301 struct eth_hdr *ethhdr;
yueee_yt 0:7766f6712673 302
yueee_yt 0:7766f6712673 303 pb = pppSingleBuf(pb);
yueee_yt 0:7766f6712673 304
yueee_yt 0:7766f6712673 305 strcpy(devname, "pppoe"); /* as long as we don't know which instance */
yueee_yt 0:7766f6712673 306 err_msg = NULL;
yueee_yt 0:7766f6712673 307 errortag = 0;
yueee_yt 0:7766f6712673 308 if (pb->len < sizeof(*ethhdr)) {
yueee_yt 0:7766f6712673 309 goto done;
yueee_yt 0:7766f6712673 310 }
yueee_yt 0:7766f6712673 311 ethhdr = (struct eth_hdr *)pb->payload;
yueee_yt 0:7766f6712673 312 off = sizeof(*ethhdr);
yueee_yt 0:7766f6712673 313
yueee_yt 0:7766f6712673 314 ac_cookie = NULL;
yueee_yt 0:7766f6712673 315 ac_cookie_len = 0;
yueee_yt 0:7766f6712673 316 #ifdef PPPOE_SERVER
yueee_yt 0:7766f6712673 317 hunique = NULL;
yueee_yt 0:7766f6712673 318 hunique_len = 0;
yueee_yt 0:7766f6712673 319 #endif
yueee_yt 0:7766f6712673 320 session = 0;
yueee_yt 0:7766f6712673 321 if (pb->len - off < PPPOE_HEADERLEN) {
yueee_yt 0:7766f6712673 322 printf("pppoe: packet too short: %d\n", pb->len);
yueee_yt 0:7766f6712673 323 goto done;
yueee_yt 0:7766f6712673 324 }
yueee_yt 0:7766f6712673 325
yueee_yt 0:7766f6712673 326 ph = (struct pppoehdr *) (ethhdr + 1);
yueee_yt 0:7766f6712673 327 if (ph->vertype != PPPOE_VERTYPE) {
yueee_yt 0:7766f6712673 328 printf("pppoe: unknown version/type packet: 0x%x\n", ph->vertype);
yueee_yt 0:7766f6712673 329 goto done;
yueee_yt 0:7766f6712673 330 }
yueee_yt 0:7766f6712673 331 session = ntohs(ph->session);
yueee_yt 0:7766f6712673 332 plen = ntohs(ph->plen);
yueee_yt 0:7766f6712673 333 off += sizeof(*ph);
yueee_yt 0:7766f6712673 334
yueee_yt 0:7766f6712673 335 if (plen + off > pb->len) {
yueee_yt 0:7766f6712673 336 printf("pppoe: packet content does not fit: data available = %d, packet size = %u\n",
yueee_yt 0:7766f6712673 337 pb->len - off, plen);
yueee_yt 0:7766f6712673 338 goto done;
yueee_yt 0:7766f6712673 339 }
yueee_yt 0:7766f6712673 340 if(pb->tot_len == pb->len) {
yueee_yt 0:7766f6712673 341 pb->tot_len = pb->len = (u16_t)off + plen; /* ignore trailing garbage */
yueee_yt 0:7766f6712673 342 }
yueee_yt 0:7766f6712673 343 tag = 0;
yueee_yt 0:7766f6712673 344 len = 0;
yueee_yt 0:7766f6712673 345 sc = NULL;
yueee_yt 0:7766f6712673 346 while (off + sizeof(pt) <= pb->len) {
yueee_yt 0:7766f6712673 347 MEMCPY(&pt, (u8_t*)pb->payload + off, sizeof(pt));
yueee_yt 0:7766f6712673 348 tag = ntohs(pt.tag);
yueee_yt 0:7766f6712673 349 len = ntohs(pt.len);
yueee_yt 0:7766f6712673 350 if (off + sizeof(pt) + len > pb->len) {
yueee_yt 0:7766f6712673 351 printf("pppoe: tag 0x%x len 0x%x is too long\n", tag, len);
yueee_yt 0:7766f6712673 352 goto done;
yueee_yt 0:7766f6712673 353 }
yueee_yt 0:7766f6712673 354 switch (tag) {
yueee_yt 0:7766f6712673 355 case PPPOE_TAG_EOL:
yueee_yt 0:7766f6712673 356 goto breakbreak;
yueee_yt 0:7766f6712673 357 case PPPOE_TAG_SNAME:
yueee_yt 0:7766f6712673 358 break; /* ignored */
yueee_yt 0:7766f6712673 359 case PPPOE_TAG_ACNAME:
yueee_yt 0:7766f6712673 360 break; /* ignored */
yueee_yt 0:7766f6712673 361 case PPPOE_TAG_HUNIQUE:
yueee_yt 0:7766f6712673 362 if (sc != NULL) {
yueee_yt 0:7766f6712673 363 break;
yueee_yt 0:7766f6712673 364 }
yueee_yt 0:7766f6712673 365 #ifdef PPPOE_SERVER
yueee_yt 0:7766f6712673 366 hunique = (u8_t*)pb->payload + off + sizeof(pt);
yueee_yt 0:7766f6712673 367 hunique_len = len;
yueee_yt 0:7766f6712673 368 #endif
yueee_yt 0:7766f6712673 369 sc = pppoe_find_softc_by_hunique((u8_t*)pb->payload + off + sizeof(pt), len, netif);
yueee_yt 0:7766f6712673 370 if (sc != NULL) {
yueee_yt 0:7766f6712673 371 snprintf(devname, sizeof(devname), "%c%c%"U16_F, sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
yueee_yt 0:7766f6712673 372 }
yueee_yt 0:7766f6712673 373 break;
yueee_yt 0:7766f6712673 374 case PPPOE_TAG_ACCOOKIE:
yueee_yt 0:7766f6712673 375 if (ac_cookie == NULL) {
yueee_yt 0:7766f6712673 376 ac_cookie = (u8_t*)pb->payload + off + sizeof(pt);
yueee_yt 0:7766f6712673 377 ac_cookie_len = len;
yueee_yt 0:7766f6712673 378 }
yueee_yt 0:7766f6712673 379 break;
yueee_yt 0:7766f6712673 380 case PPPOE_TAG_SNAME_ERR:
yueee_yt 0:7766f6712673 381 err_msg = "SERVICE NAME ERROR";
yueee_yt 0:7766f6712673 382 errortag = 1;
yueee_yt 0:7766f6712673 383 break;
yueee_yt 0:7766f6712673 384 case PPPOE_TAG_ACSYS_ERR:
yueee_yt 0:7766f6712673 385 err_msg = "AC SYSTEM ERROR";
yueee_yt 0:7766f6712673 386 errortag = 1;
yueee_yt 0:7766f6712673 387 break;
yueee_yt 0:7766f6712673 388 case PPPOE_TAG_GENERIC_ERR:
yueee_yt 0:7766f6712673 389 err_msg = "GENERIC ERROR";
yueee_yt 0:7766f6712673 390 errortag = 1;
yueee_yt 0:7766f6712673 391 break;
yueee_yt 0:7766f6712673 392 }
yueee_yt 0:7766f6712673 393 if (err_msg) {
yueee_yt 0:7766f6712673 394 if (errortag && len) {
yueee_yt 0:7766f6712673 395 u16_t error_len = LWIP_MIN(len, sizeof(pppoe_error_tmp)-1);
yueee_yt 0:7766f6712673 396 strncpy(pppoe_error_tmp, (char*)pb->payload + off + sizeof(pt), error_len);
yueee_yt 0:7766f6712673 397 pppoe_error_tmp[error_len-1] = '\0';
yueee_yt 0:7766f6712673 398 printf("%s: %s: %s\n", devname, err_msg, pppoe_error_tmp);
yueee_yt 0:7766f6712673 399 } else {
yueee_yt 0:7766f6712673 400 printf("%s: %s\n", devname, err_msg);
yueee_yt 0:7766f6712673 401 }
yueee_yt 0:7766f6712673 402 if (errortag) {
yueee_yt 0:7766f6712673 403 goto done;
yueee_yt 0:7766f6712673 404 }
yueee_yt 0:7766f6712673 405 }
yueee_yt 0:7766f6712673 406 off += sizeof(pt) + len;
yueee_yt 0:7766f6712673 407 }
yueee_yt 0:7766f6712673 408
yueee_yt 0:7766f6712673 409 breakbreak:;
yueee_yt 0:7766f6712673 410 switch (ph->code) {
yueee_yt 0:7766f6712673 411 case PPPOE_CODE_PADI:
yueee_yt 0:7766f6712673 412 #ifdef PPPOE_SERVER
yueee_yt 0:7766f6712673 413 /*
yueee_yt 0:7766f6712673 414 * got service name, concentrator name, and/or host unique.
yueee_yt 0:7766f6712673 415 * ignore if we have no interfaces with IFF_PASSIVE|IFF_UP.
yueee_yt 0:7766f6712673 416 */
yueee_yt 0:7766f6712673 417 if (LIST_EMPTY(&pppoe_softc_list)) {
yueee_yt 0:7766f6712673 418 goto done;
yueee_yt 0:7766f6712673 419 }
yueee_yt 0:7766f6712673 420 LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
yueee_yt 0:7766f6712673 421 if (!(sc->sc_sppp.pp_if.if_flags & IFF_UP)) {
yueee_yt 0:7766f6712673 422 continue;
yueee_yt 0:7766f6712673 423 }
yueee_yt 0:7766f6712673 424 if (!(sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
yueee_yt 0:7766f6712673 425 continue;
yueee_yt 0:7766f6712673 426 }
yueee_yt 0:7766f6712673 427 if (sc->sc_state == PPPOE_STATE_INITIAL) {
yueee_yt 0:7766f6712673 428 break;
yueee_yt 0:7766f6712673 429 }
yueee_yt 0:7766f6712673 430 }
yueee_yt 0:7766f6712673 431 if (sc == NULL) {
yueee_yt 0:7766f6712673 432 /* printf("pppoe: free passive interface is not found\n"); */
yueee_yt 0:7766f6712673 433 goto done;
yueee_yt 0:7766f6712673 434 }
yueee_yt 0:7766f6712673 435 if (hunique) {
yueee_yt 0:7766f6712673 436 if (sc->sc_hunique) {
yueee_yt 0:7766f6712673 437 mem_free(sc->sc_hunique);
yueee_yt 0:7766f6712673 438 }
yueee_yt 0:7766f6712673 439 sc->sc_hunique = mem_malloc(hunique_len);
yueee_yt 0:7766f6712673 440 if (sc->sc_hunique == NULL) {
yueee_yt 0:7766f6712673 441 goto done;
yueee_yt 0:7766f6712673 442 }
yueee_yt 0:7766f6712673 443 sc->sc_hunique_len = hunique_len;
yueee_yt 0:7766f6712673 444 MEMCPY(sc->sc_hunique, hunique, hunique_len);
yueee_yt 0:7766f6712673 445 }
yueee_yt 0:7766f6712673 446 MEMCPY(&sc->sc_dest, eh->ether_shost, sizeof sc->sc_dest);
yueee_yt 0:7766f6712673 447 sc->sc_state = PPPOE_STATE_PADO_SENT;
yueee_yt 0:7766f6712673 448 pppoe_send_pado(sc);
yueee_yt 0:7766f6712673 449 break;
yueee_yt 0:7766f6712673 450 #endif /* PPPOE_SERVER */
yueee_yt 0:7766f6712673 451 case PPPOE_CODE_PADR:
yueee_yt 0:7766f6712673 452 #ifdef PPPOE_SERVER
yueee_yt 0:7766f6712673 453 /*
yueee_yt 0:7766f6712673 454 * get sc from ac_cookie if IFF_PASSIVE
yueee_yt 0:7766f6712673 455 */
yueee_yt 0:7766f6712673 456 if (ac_cookie == NULL) {
yueee_yt 0:7766f6712673 457 /* be quiet if there is not a single pppoe instance */
yueee_yt 0:7766f6712673 458 printf("pppoe: received PADR but not includes ac_cookie\n");
yueee_yt 0:7766f6712673 459 goto done;
yueee_yt 0:7766f6712673 460 }
yueee_yt 0:7766f6712673 461 sc = pppoe_find_softc_by_hunique(ac_cookie, ac_cookie_len, netif);
yueee_yt 0:7766f6712673 462 if (sc == NULL) {
yueee_yt 0:7766f6712673 463 /* be quiet if there is not a single pppoe instance */
yueee_yt 0:7766f6712673 464 if (!LIST_EMPTY(&pppoe_softc_list)) {
yueee_yt 0:7766f6712673 465 printf("pppoe: received PADR but could not find request for it\n");
yueee_yt 0:7766f6712673 466 }
yueee_yt 0:7766f6712673 467 goto done;
yueee_yt 0:7766f6712673 468 }
yueee_yt 0:7766f6712673 469 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
yueee_yt 0:7766f6712673 470 printf("%c%c%"U16_F": received unexpected PADR\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
yueee_yt 0:7766f6712673 471 goto done;
yueee_yt 0:7766f6712673 472 }
yueee_yt 0:7766f6712673 473 if (hunique) {
yueee_yt 0:7766f6712673 474 if (sc->sc_hunique) {
yueee_yt 0:7766f6712673 475 mem_free(sc->sc_hunique);
yueee_yt 0:7766f6712673 476 }
yueee_yt 0:7766f6712673 477 sc->sc_hunique = mem_malloc(hunique_len);
yueee_yt 0:7766f6712673 478 if (sc->sc_hunique == NULL) {
yueee_yt 0:7766f6712673 479 goto done;
yueee_yt 0:7766f6712673 480 }
yueee_yt 0:7766f6712673 481 sc->sc_hunique_len = hunique_len;
yueee_yt 0:7766f6712673 482 MEMCPY(sc->sc_hunique, hunique, hunique_len);
yueee_yt 0:7766f6712673 483 }
yueee_yt 0:7766f6712673 484 pppoe_send_pads(sc);
yueee_yt 0:7766f6712673 485 sc->sc_state = PPPOE_STATE_SESSION;
yueee_yt 0:7766f6712673 486 pppoe_linkstatus_up(sc); /* notify upper layers */
yueee_yt 0:7766f6712673 487 break;
yueee_yt 0:7766f6712673 488 #else
yueee_yt 0:7766f6712673 489 /* ignore, we are no access concentrator */
yueee_yt 0:7766f6712673 490 goto done;
yueee_yt 0:7766f6712673 491 #endif /* PPPOE_SERVER */
yueee_yt 0:7766f6712673 492 case PPPOE_CODE_PADO:
yueee_yt 0:7766f6712673 493 if (sc == NULL) {
yueee_yt 0:7766f6712673 494 /* be quiet if there is not a single pppoe instance */
yueee_yt 0:7766f6712673 495 if (pppoe_softc_list != NULL) {
yueee_yt 0:7766f6712673 496 printf("pppoe: received PADO but could not find request for it\n");
yueee_yt 0:7766f6712673 497 }
yueee_yt 0:7766f6712673 498 goto done;
yueee_yt 0:7766f6712673 499 }
yueee_yt 0:7766f6712673 500 if (sc->sc_state != PPPOE_STATE_PADI_SENT) {
yueee_yt 0:7766f6712673 501 printf("%c%c%"U16_F": received unexpected PADO\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
yueee_yt 0:7766f6712673 502 goto done;
yueee_yt 0:7766f6712673 503 }
yueee_yt 0:7766f6712673 504 if (ac_cookie) {
yueee_yt 0:7766f6712673 505 sc->sc_ac_cookie_len = ac_cookie_len;
yueee_yt 0:7766f6712673 506 MEMCPY(sc->sc_ac_cookie, ac_cookie, ac_cookie_len);
yueee_yt 0:7766f6712673 507 }
yueee_yt 0:7766f6712673 508 MEMCPY(&sc->sc_dest, ethhdr->src.addr, sizeof(sc->sc_dest.addr));
yueee_yt 0:7766f6712673 509 sys_untimeout(pppoe_timeout, sc);
yueee_yt 0:7766f6712673 510 sc->sc_padr_retried = 0;
yueee_yt 0:7766f6712673 511 sc->sc_state = PPPOE_STATE_PADR_SENT;
yueee_yt 0:7766f6712673 512 if ((err = pppoe_send_padr(sc)) != 0) {
yueee_yt 0:7766f6712673 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));
yueee_yt 0:7766f6712673 514 }
yueee_yt 0:7766f6712673 515 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
yueee_yt 0:7766f6712673 516 break;
yueee_yt 0:7766f6712673 517 case PPPOE_CODE_PADS:
yueee_yt 0:7766f6712673 518 if (sc == NULL) {
yueee_yt 0:7766f6712673 519 goto done;
yueee_yt 0:7766f6712673 520 }
yueee_yt 0:7766f6712673 521 sc->sc_session = session;
yueee_yt 0:7766f6712673 522 sys_untimeout(pppoe_timeout, sc);
yueee_yt 0:7766f6712673 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));
yueee_yt 0:7766f6712673 524 sc->sc_state = PPPOE_STATE_SESSION;
yueee_yt 0:7766f6712673 525 pppoe_linkstatus_up(sc); /* notify upper layers */
yueee_yt 0:7766f6712673 526 break;
yueee_yt 0:7766f6712673 527 case PPPOE_CODE_PADT:
yueee_yt 0:7766f6712673 528 if (sc == NULL) {
yueee_yt 0:7766f6712673 529 goto done;
yueee_yt 0:7766f6712673 530 }
yueee_yt 0:7766f6712673 531 pppoe_clear_softc(sc, "received PADT");
yueee_yt 0:7766f6712673 532 break;
yueee_yt 0:7766f6712673 533 default:
yueee_yt 0:7766f6712673 534 if(sc) {
yueee_yt 0:7766f6712673 535 printf("%c%c%"U16_F": unknown code (0x%"X16_F") session = 0x%"X16_F"\n",
yueee_yt 0:7766f6712673 536 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
yueee_yt 0:7766f6712673 537 (u16_t)ph->code, session);
yueee_yt 0:7766f6712673 538 } else {
yueee_yt 0:7766f6712673 539 printf("pppoe: unknown code (0x%"X16_F") session = 0x%"X16_F"\n", (u16_t)ph->code, session);
yueee_yt 0:7766f6712673 540 }
yueee_yt 0:7766f6712673 541 break;
yueee_yt 0:7766f6712673 542 }
yueee_yt 0:7766f6712673 543
yueee_yt 0:7766f6712673 544 done:
yueee_yt 0:7766f6712673 545 pbuf_free(pb);
yueee_yt 0:7766f6712673 546 return;
yueee_yt 0:7766f6712673 547 }
yueee_yt 0:7766f6712673 548
yueee_yt 0:7766f6712673 549 void
yueee_yt 0:7766f6712673 550 pppoe_disc_input(struct netif *netif, struct pbuf *p)
yueee_yt 0:7766f6712673 551 {
yueee_yt 0:7766f6712673 552 /* avoid error messages if there is not a single pppoe instance */
yueee_yt 0:7766f6712673 553 if (pppoe_softc_list != NULL) {
yueee_yt 0:7766f6712673 554 pppoe_dispatch_disc_pkt(netif, p);
yueee_yt 0:7766f6712673 555 } else {
yueee_yt 0:7766f6712673 556 pbuf_free(p);
yueee_yt 0:7766f6712673 557 }
yueee_yt 0:7766f6712673 558 }
yueee_yt 0:7766f6712673 559
yueee_yt 0:7766f6712673 560 void
yueee_yt 0:7766f6712673 561 pppoe_data_input(struct netif *netif, struct pbuf *pb)
yueee_yt 0:7766f6712673 562 {
yueee_yt 0:7766f6712673 563 u16_t session, plen;
yueee_yt 0:7766f6712673 564 struct pppoe_softc *sc;
yueee_yt 0:7766f6712673 565 struct pppoehdr *ph;
yueee_yt 0:7766f6712673 566 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
yueee_yt 0:7766f6712673 567 u8_t shost[ETHER_ADDR_LEN];
yueee_yt 0:7766f6712673 568 #endif
yueee_yt 0:7766f6712673 569
yueee_yt 0:7766f6712673 570 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
yueee_yt 0:7766f6712673 571 MEMCPY(shost, ((struct eth_hdr *)pb->payload)->src.addr, sizeof(shost));
yueee_yt 0:7766f6712673 572 #endif
yueee_yt 0:7766f6712673 573 if (pbuf_header(pb, -(int)sizeof(struct eth_hdr)) != 0) {
yueee_yt 0:7766f6712673 574 /* bail out */
yueee_yt 0:7766f6712673 575 PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header failed\n"));
yueee_yt 0:7766f6712673 576 LINK_STATS_INC(link.lenerr);
yueee_yt 0:7766f6712673 577 goto drop;
yueee_yt 0:7766f6712673 578 }
yueee_yt 0:7766f6712673 579
yueee_yt 0:7766f6712673 580 pb = pppSingleBuf (pb);
yueee_yt 0:7766f6712673 581
yueee_yt 0:7766f6712673 582 if (pb->len <= PPPOE_HEADERLEN) {
yueee_yt 0:7766f6712673 583 printf("pppoe (data): dropping too short packet: %d bytes\n", pb->len);
yueee_yt 0:7766f6712673 584 goto drop;
yueee_yt 0:7766f6712673 585 }
yueee_yt 0:7766f6712673 586
yueee_yt 0:7766f6712673 587 if (pb->len < sizeof(*ph)) {
yueee_yt 0:7766f6712673 588 printf("pppoe_data_input: could not get PPPoE header\n");
yueee_yt 0:7766f6712673 589 goto drop;
yueee_yt 0:7766f6712673 590 }
yueee_yt 0:7766f6712673 591 ph = (struct pppoehdr *)pb->payload;
yueee_yt 0:7766f6712673 592
yueee_yt 0:7766f6712673 593 if (ph->vertype != PPPOE_VERTYPE) {
yueee_yt 0:7766f6712673 594 printf("pppoe (data): unknown version/type packet: 0x%x\n", ph->vertype);
yueee_yt 0:7766f6712673 595 goto drop;
yueee_yt 0:7766f6712673 596 }
yueee_yt 0:7766f6712673 597 if (ph->code != 0) {
yueee_yt 0:7766f6712673 598 goto drop;
yueee_yt 0:7766f6712673 599 }
yueee_yt 0:7766f6712673 600
yueee_yt 0:7766f6712673 601 session = ntohs(ph->session);
yueee_yt 0:7766f6712673 602 sc = pppoe_find_softc_by_session(session, netif);
yueee_yt 0:7766f6712673 603 if (sc == NULL) {
yueee_yt 0:7766f6712673 604 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
yueee_yt 0:7766f6712673 605 printf("pppoe: input for unknown session 0x%x, sending PADT\n", session);
yueee_yt 0:7766f6712673 606 pppoe_send_padt(netif, session, shost);
yueee_yt 0:7766f6712673 607 #endif
yueee_yt 0:7766f6712673 608 goto drop;
yueee_yt 0:7766f6712673 609 }
yueee_yt 0:7766f6712673 610
yueee_yt 0:7766f6712673 611 plen = ntohs(ph->plen);
yueee_yt 0:7766f6712673 612
yueee_yt 0:7766f6712673 613 if (pbuf_header(pb, -(int)(PPPOE_HEADERLEN)) != 0) {
yueee_yt 0:7766f6712673 614 /* bail out */
yueee_yt 0:7766f6712673 615 PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header PPPOE_HEADERLEN failed\n"));
yueee_yt 0:7766f6712673 616 LINK_STATS_INC(link.lenerr);
yueee_yt 0:7766f6712673 617 goto drop;
yueee_yt 0:7766f6712673 618 }
yueee_yt 0:7766f6712673 619
yueee_yt 0:7766f6712673 620 PPPDEBUG(LOG_DEBUG, ("pppoe_data_input: %c%c%"U16_F": pkthdr.len=%d, pppoe.len=%d\n",
yueee_yt 0:7766f6712673 621 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
yueee_yt 0:7766f6712673 622 pb->len, plen));
yueee_yt 0:7766f6712673 623
yueee_yt 0:7766f6712673 624 if (pb->len < plen) {
yueee_yt 0:7766f6712673 625 goto drop;
yueee_yt 0:7766f6712673 626 }
yueee_yt 0:7766f6712673 627
yueee_yt 0:7766f6712673 628 pppInProcOverEthernet(sc->sc_pd, pb);
yueee_yt 0:7766f6712673 629
yueee_yt 0:7766f6712673 630 return;
yueee_yt 0:7766f6712673 631
yueee_yt 0:7766f6712673 632 drop:
yueee_yt 0:7766f6712673 633 pbuf_free(pb);
yueee_yt 0:7766f6712673 634 }
yueee_yt 0:7766f6712673 635
yueee_yt 0:7766f6712673 636 static err_t
yueee_yt 0:7766f6712673 637 pppoe_output(struct pppoe_softc *sc, struct pbuf *pb)
yueee_yt 0:7766f6712673 638 {
yueee_yt 0:7766f6712673 639 struct eth_hdr *ethhdr;
yueee_yt 0:7766f6712673 640 u16_t etype;
yueee_yt 0:7766f6712673 641 err_t res;
yueee_yt 0:7766f6712673 642
yueee_yt 0:7766f6712673 643 if (!sc->sc_ethif) {
yueee_yt 0:7766f6712673 644 pbuf_free(pb);
yueee_yt 0:7766f6712673 645 return ERR_IF;
yueee_yt 0:7766f6712673 646 }
yueee_yt 0:7766f6712673 647
yueee_yt 0:7766f6712673 648 ethhdr = (struct eth_hdr *)pb->payload;
yueee_yt 0:7766f6712673 649 etype = sc->sc_state == PPPOE_STATE_SESSION ? ETHTYPE_PPPOE : ETHTYPE_PPPOEDISC;
yueee_yt 0:7766f6712673 650 ethhdr->type = htons(etype);
yueee_yt 0:7766f6712673 651 MEMCPY(ethhdr->dest.addr, sc->sc_dest.addr, sizeof(ethhdr->dest.addr));
yueee_yt 0:7766f6712673 652 MEMCPY(ethhdr->src.addr, ((struct eth_addr *)sc->sc_ethif->hwaddr)->addr, sizeof(ethhdr->src.addr));
yueee_yt 0:7766f6712673 653
yueee_yt 0:7766f6712673 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",
yueee_yt 0:7766f6712673 655 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, etype,
yueee_yt 0:7766f6712673 656 sc->sc_state, sc->sc_session,
yueee_yt 0:7766f6712673 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],
yueee_yt 0:7766f6712673 658 pb->tot_len));
yueee_yt 0:7766f6712673 659
yueee_yt 0:7766f6712673 660 res = sc->sc_ethif->linkoutput(sc->sc_ethif, pb);
yueee_yt 0:7766f6712673 661
yueee_yt 0:7766f6712673 662 pbuf_free(pb);
yueee_yt 0:7766f6712673 663
yueee_yt 0:7766f6712673 664 return res;
yueee_yt 0:7766f6712673 665 }
yueee_yt 0:7766f6712673 666
yueee_yt 0:7766f6712673 667 static err_t
yueee_yt 0:7766f6712673 668 pppoe_send_padi(struct pppoe_softc *sc)
yueee_yt 0:7766f6712673 669 {
yueee_yt 0:7766f6712673 670 struct pbuf *pb;
yueee_yt 0:7766f6712673 671 u8_t *p;
yueee_yt 0:7766f6712673 672 int len;
yueee_yt 0:7766f6712673 673 #ifdef PPPOE_TODO
yueee_yt 0:7766f6712673 674 int l1 = 0, l2 = 0; /* XXX: gcc */
yueee_yt 0:7766f6712673 675 #endif /* PPPOE_TODO */
yueee_yt 0:7766f6712673 676
yueee_yt 0:7766f6712673 677 if (sc->sc_state >PPPOE_STATE_PADI_SENT) {
yueee_yt 0:7766f6712673 678 PPPDEBUG(LOG_ERR, ("ERROR: pppoe_send_padi in state %d", sc->sc_state));
yueee_yt 0:7766f6712673 679 }
yueee_yt 0:7766f6712673 680
yueee_yt 0:7766f6712673 681 /* calculate length of frame (excluding ethernet header + pppoe header) */
yueee_yt 0:7766f6712673 682 len = 2 + 2 + 2 + 2 + sizeof sc; /* service name tag is required, host unique is send too */
yueee_yt 0:7766f6712673 683 #ifdef PPPOE_TODO
yueee_yt 0:7766f6712673 684 if (sc->sc_service_name != NULL) {
yueee_yt 0:7766f6712673 685 l1 = (int)strlen(sc->sc_service_name);
yueee_yt 0:7766f6712673 686 len += l1;
yueee_yt 0:7766f6712673 687 }
yueee_yt 0:7766f6712673 688 if (sc->sc_concentrator_name != NULL) {
yueee_yt 0:7766f6712673 689 l2 = (int)strlen(sc->sc_concentrator_name);
yueee_yt 0:7766f6712673 690 len += 2 + 2 + l2;
yueee_yt 0:7766f6712673 691 }
yueee_yt 0:7766f6712673 692 #endif /* PPPOE_TODO */
yueee_yt 0:7766f6712673 693 LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
yueee_yt 0:7766f6712673 694 sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
yueee_yt 0:7766f6712673 695
yueee_yt 0:7766f6712673 696 /* allocate a buffer */
yueee_yt 0:7766f6712673 697 pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
yueee_yt 0:7766f6712673 698 if (!pb) {
yueee_yt 0:7766f6712673 699 return ERR_MEM;
yueee_yt 0:7766f6712673 700 }
yueee_yt 0:7766f6712673 701 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
yueee_yt 0:7766f6712673 702
yueee_yt 0:7766f6712673 703 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
yueee_yt 0:7766f6712673 704 /* fill in pkt */
yueee_yt 0:7766f6712673 705 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADI, 0, (u16_t)len);
yueee_yt 0:7766f6712673 706 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
yueee_yt 0:7766f6712673 707 #ifdef PPPOE_TODO
yueee_yt 0:7766f6712673 708 if (sc->sc_service_name != NULL) {
yueee_yt 0:7766f6712673 709 PPPOE_ADD_16(p, l1);
yueee_yt 0:7766f6712673 710 MEMCPY(p, sc->sc_service_name, l1);
yueee_yt 0:7766f6712673 711 p += l1;
yueee_yt 0:7766f6712673 712 } else
yueee_yt 0:7766f6712673 713 #endif /* PPPOE_TODO */
yueee_yt 0:7766f6712673 714 {
yueee_yt 0:7766f6712673 715 PPPOE_ADD_16(p, 0);
yueee_yt 0:7766f6712673 716 }
yueee_yt 0:7766f6712673 717 #ifdef PPPOE_TODO
yueee_yt 0:7766f6712673 718 if (sc->sc_concentrator_name != NULL) {
yueee_yt 0:7766f6712673 719 PPPOE_ADD_16(p, PPPOE_TAG_ACNAME);
yueee_yt 0:7766f6712673 720 PPPOE_ADD_16(p, l2);
yueee_yt 0:7766f6712673 721 MEMCPY(p, sc->sc_concentrator_name, l2);
yueee_yt 0:7766f6712673 722 p += l2;
yueee_yt 0:7766f6712673 723 }
yueee_yt 0:7766f6712673 724 #endif /* PPPOE_TODO */
yueee_yt 0:7766f6712673 725 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
yueee_yt 0:7766f6712673 726 PPPOE_ADD_16(p, sizeof(sc));
yueee_yt 0:7766f6712673 727 MEMCPY(p, &sc, sizeof sc);
yueee_yt 0:7766f6712673 728
yueee_yt 0:7766f6712673 729 /* send pkt */
yueee_yt 0:7766f6712673 730 return pppoe_output(sc, pb);
yueee_yt 0:7766f6712673 731 }
yueee_yt 0:7766f6712673 732
yueee_yt 0:7766f6712673 733 static void
yueee_yt 0:7766f6712673 734 pppoe_timeout(void *arg)
yueee_yt 0:7766f6712673 735 {
yueee_yt 0:7766f6712673 736 int retry_wait, err;
yueee_yt 0:7766f6712673 737 struct pppoe_softc *sc = (struct pppoe_softc*)arg;
yueee_yt 0:7766f6712673 738
yueee_yt 0:7766f6712673 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));
yueee_yt 0:7766f6712673 740
yueee_yt 0:7766f6712673 741 switch (sc->sc_state) {
yueee_yt 0:7766f6712673 742 case PPPOE_STATE_PADI_SENT:
yueee_yt 0:7766f6712673 743 /*
yueee_yt 0:7766f6712673 744 * We have two basic ways of retrying:
yueee_yt 0:7766f6712673 745 * - Quick retry mode: try a few times in short sequence
yueee_yt 0:7766f6712673 746 * - Slow retry mode: we already had a connection successfully
yueee_yt 0:7766f6712673 747 * established and will try infinitely (without user
yueee_yt 0:7766f6712673 748 * intervention)
yueee_yt 0:7766f6712673 749 * We only enter slow retry mode if IFF_LINK1 (aka autodial)
yueee_yt 0:7766f6712673 750 * is not set.
yueee_yt 0:7766f6712673 751 */
yueee_yt 0:7766f6712673 752
yueee_yt 0:7766f6712673 753 /* initialize for quick retry mode */
yueee_yt 0:7766f6712673 754 retry_wait = PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried);
yueee_yt 0:7766f6712673 755
yueee_yt 0:7766f6712673 756 sc->sc_padi_retried++;
yueee_yt 0:7766f6712673 757 if (sc->sc_padi_retried >= PPPOE_DISC_MAXPADI) {
yueee_yt 0:7766f6712673 758 #if 0
yueee_yt 0:7766f6712673 759 if ((sc->sc_sppp.pp_if.if_flags & IFF_LINK1) == 0) {
yueee_yt 0:7766f6712673 760 /* slow retry mode */
yueee_yt 0:7766f6712673 761 retry_wait = PPPOE_SLOW_RETRY;
yueee_yt 0:7766f6712673 762 } else
yueee_yt 0:7766f6712673 763 #endif
yueee_yt 0:7766f6712673 764 {
yueee_yt 0:7766f6712673 765 pppoe_abort_connect(sc);
yueee_yt 0:7766f6712673 766 return;
yueee_yt 0:7766f6712673 767 }
yueee_yt 0:7766f6712673 768 }
yueee_yt 0:7766f6712673 769 if ((err = pppoe_send_padi(sc)) != 0) {
yueee_yt 0:7766f6712673 770 sc->sc_padi_retried--;
yueee_yt 0:7766f6712673 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));
yueee_yt 0:7766f6712673 772 }
yueee_yt 0:7766f6712673 773 sys_timeout(retry_wait, pppoe_timeout, sc);
yueee_yt 0:7766f6712673 774 break;
yueee_yt 0:7766f6712673 775
yueee_yt 0:7766f6712673 776 case PPPOE_STATE_PADR_SENT:
yueee_yt 0:7766f6712673 777 sc->sc_padr_retried++;
yueee_yt 0:7766f6712673 778 if (sc->sc_padr_retried >= PPPOE_DISC_MAXPADR) {
yueee_yt 0:7766f6712673 779 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
yueee_yt 0:7766f6712673 780 sc->sc_state = PPPOE_STATE_PADI_SENT;
yueee_yt 0:7766f6712673 781 sc->sc_padr_retried = 0;
yueee_yt 0:7766f6712673 782 if ((err = pppoe_send_padi(sc)) != 0) {
yueee_yt 0:7766f6712673 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));
yueee_yt 0:7766f6712673 784 }
yueee_yt 0:7766f6712673 785 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried), pppoe_timeout, sc);
yueee_yt 0:7766f6712673 786 return;
yueee_yt 0:7766f6712673 787 }
yueee_yt 0:7766f6712673 788 if ((err = pppoe_send_padr(sc)) != 0) {
yueee_yt 0:7766f6712673 789 sc->sc_padr_retried--;
yueee_yt 0:7766f6712673 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));
yueee_yt 0:7766f6712673 791 }
yueee_yt 0:7766f6712673 792 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
yueee_yt 0:7766f6712673 793 break;
yueee_yt 0:7766f6712673 794 case PPPOE_STATE_CLOSING:
yueee_yt 0:7766f6712673 795 pppoe_do_disconnect(sc);
yueee_yt 0:7766f6712673 796 break;
yueee_yt 0:7766f6712673 797 default:
yueee_yt 0:7766f6712673 798 return; /* all done, work in peace */
yueee_yt 0:7766f6712673 799 }
yueee_yt 0:7766f6712673 800 }
yueee_yt 0:7766f6712673 801
yueee_yt 0:7766f6712673 802 /* Start a connection (i.e. initiate discovery phase) */
yueee_yt 0:7766f6712673 803 int
yueee_yt 0:7766f6712673 804 pppoe_connect(struct pppoe_softc *sc)
yueee_yt 0:7766f6712673 805 {
yueee_yt 0:7766f6712673 806 int err;
yueee_yt 0:7766f6712673 807
yueee_yt 0:7766f6712673 808 if (sc->sc_state != PPPOE_STATE_INITIAL) {
yueee_yt 0:7766f6712673 809 return EBUSY;
yueee_yt 0:7766f6712673 810 }
yueee_yt 0:7766f6712673 811
yueee_yt 0:7766f6712673 812 #ifdef PPPOE_SERVER
yueee_yt 0:7766f6712673 813 /* wait PADI if IFF_PASSIVE */
yueee_yt 0:7766f6712673 814 if ((sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
yueee_yt 0:7766f6712673 815 return 0;
yueee_yt 0:7766f6712673 816 }
yueee_yt 0:7766f6712673 817 #endif
yueee_yt 0:7766f6712673 818 /* save state, in case we fail to send PADI */
yueee_yt 0:7766f6712673 819 sc->sc_state = PPPOE_STATE_PADI_SENT;
yueee_yt 0:7766f6712673 820 sc->sc_padr_retried = 0;
yueee_yt 0:7766f6712673 821 err = pppoe_send_padi(sc);
yueee_yt 0:7766f6712673 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));
yueee_yt 0:7766f6712673 823 sys_timeout(PPPOE_DISC_TIMEOUT, pppoe_timeout, sc);
yueee_yt 0:7766f6712673 824 return err;
yueee_yt 0:7766f6712673 825 }
yueee_yt 0:7766f6712673 826
yueee_yt 0:7766f6712673 827 /* disconnect */
yueee_yt 0:7766f6712673 828 void
yueee_yt 0:7766f6712673 829 pppoe_disconnect(struct pppoe_softc *sc)
yueee_yt 0:7766f6712673 830 {
yueee_yt 0:7766f6712673 831 if (sc->sc_state < PPPOE_STATE_SESSION) {
yueee_yt 0:7766f6712673 832 return;
yueee_yt 0:7766f6712673 833 }
yueee_yt 0:7766f6712673 834 /*
yueee_yt 0:7766f6712673 835 * Do not call pppoe_disconnect here, the upper layer state
yueee_yt 0:7766f6712673 836 * machine gets confused by this. We must return from this
yueee_yt 0:7766f6712673 837 * function and defer disconnecting to the timeout handler.
yueee_yt 0:7766f6712673 838 */
yueee_yt 0:7766f6712673 839 sc->sc_state = PPPOE_STATE_CLOSING;
yueee_yt 0:7766f6712673 840 sys_timeout(20, pppoe_timeout, sc);
yueee_yt 0:7766f6712673 841 }
yueee_yt 0:7766f6712673 842
yueee_yt 0:7766f6712673 843 static int
yueee_yt 0:7766f6712673 844 pppoe_do_disconnect(struct pppoe_softc *sc)
yueee_yt 0:7766f6712673 845 {
yueee_yt 0:7766f6712673 846 int err;
yueee_yt 0:7766f6712673 847
yueee_yt 0:7766f6712673 848 if (sc->sc_state < PPPOE_STATE_SESSION) {
yueee_yt 0:7766f6712673 849 err = EBUSY;
yueee_yt 0:7766f6712673 850 } else {
yueee_yt 0:7766f6712673 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));
yueee_yt 0:7766f6712673 852 err = pppoe_send_padt(sc->sc_ethif, sc->sc_session, (const u8_t *)&sc->sc_dest);
yueee_yt 0:7766f6712673 853 }
yueee_yt 0:7766f6712673 854
yueee_yt 0:7766f6712673 855 /* cleanup softc */
yueee_yt 0:7766f6712673 856 sc->sc_state = PPPOE_STATE_INITIAL;
yueee_yt 0:7766f6712673 857 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
yueee_yt 0:7766f6712673 858 sc->sc_ac_cookie_len = 0;
yueee_yt 0:7766f6712673 859 #ifdef PPPOE_SERVER
yueee_yt 0:7766f6712673 860 if (sc->sc_hunique) {
yueee_yt 0:7766f6712673 861 mem_free(sc->sc_hunique);
yueee_yt 0:7766f6712673 862 sc->sc_hunique = NULL;
yueee_yt 0:7766f6712673 863 }
yueee_yt 0:7766f6712673 864 sc->sc_hunique_len = 0;
yueee_yt 0:7766f6712673 865 #endif
yueee_yt 0:7766f6712673 866 sc->sc_session = 0;
yueee_yt 0:7766f6712673 867
yueee_yt 0:7766f6712673 868 sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
yueee_yt 0:7766f6712673 869
yueee_yt 0:7766f6712673 870 return err;
yueee_yt 0:7766f6712673 871 }
yueee_yt 0:7766f6712673 872
yueee_yt 0:7766f6712673 873 /* Connection attempt aborted */
yueee_yt 0:7766f6712673 874 static void
yueee_yt 0:7766f6712673 875 pppoe_abort_connect(struct pppoe_softc *sc)
yueee_yt 0:7766f6712673 876 {
yueee_yt 0:7766f6712673 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);
yueee_yt 0:7766f6712673 878 sc->sc_state = PPPOE_STATE_CLOSING;
yueee_yt 0:7766f6712673 879
yueee_yt 0:7766f6712673 880 sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
yueee_yt 0:7766f6712673 881
yueee_yt 0:7766f6712673 882 /* clear connection state */
yueee_yt 0:7766f6712673 883 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
yueee_yt 0:7766f6712673 884 sc->sc_state = PPPOE_STATE_INITIAL;
yueee_yt 0:7766f6712673 885 }
yueee_yt 0:7766f6712673 886
yueee_yt 0:7766f6712673 887 /* Send a PADR packet */
yueee_yt 0:7766f6712673 888 static err_t
yueee_yt 0:7766f6712673 889 pppoe_send_padr(struct pppoe_softc *sc)
yueee_yt 0:7766f6712673 890 {
yueee_yt 0:7766f6712673 891 struct pbuf *pb;
yueee_yt 0:7766f6712673 892 u8_t *p;
yueee_yt 0:7766f6712673 893 size_t len;
yueee_yt 0:7766f6712673 894 #ifdef PPPOE_TODO
yueee_yt 0:7766f6712673 895 size_t l1 = 0; /* XXX: gcc */
yueee_yt 0:7766f6712673 896 #endif /* PPPOE_TODO */
yueee_yt 0:7766f6712673 897
yueee_yt 0:7766f6712673 898 if (sc->sc_state != PPPOE_STATE_PADR_SENT) {
yueee_yt 0:7766f6712673 899 return ERR_CONN;
yueee_yt 0:7766f6712673 900 }
yueee_yt 0:7766f6712673 901
yueee_yt 0:7766f6712673 902 len = 2 + 2 + 2 + 2 + sizeof(sc); /* service name, host unique */
yueee_yt 0:7766f6712673 903 #ifdef PPPOE_TODO
yueee_yt 0:7766f6712673 904 if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
yueee_yt 0:7766f6712673 905 l1 = strlen(sc->sc_service_name);
yueee_yt 0:7766f6712673 906 len += l1;
yueee_yt 0:7766f6712673 907 }
yueee_yt 0:7766f6712673 908 #endif /* PPPOE_TODO */
yueee_yt 0:7766f6712673 909 if (sc->sc_ac_cookie_len > 0) {
yueee_yt 0:7766f6712673 910 len += 2 + 2 + sc->sc_ac_cookie_len; /* AC cookie */
yueee_yt 0:7766f6712673 911 }
yueee_yt 0:7766f6712673 912 LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
yueee_yt 0:7766f6712673 913 sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
yueee_yt 0:7766f6712673 914 pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
yueee_yt 0:7766f6712673 915 if (!pb) {
yueee_yt 0:7766f6712673 916 return ERR_MEM;
yueee_yt 0:7766f6712673 917 }
yueee_yt 0:7766f6712673 918 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
yueee_yt 0:7766f6712673 919 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
yueee_yt 0:7766f6712673 920 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADR, 0, len);
yueee_yt 0:7766f6712673 921 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
yueee_yt 0:7766f6712673 922 #ifdef PPPOE_TODO
yueee_yt 0:7766f6712673 923 if (sc->sc_service_name != NULL) {
yueee_yt 0:7766f6712673 924 PPPOE_ADD_16(p, l1);
yueee_yt 0:7766f6712673 925 MEMCPY(p, sc->sc_service_name, l1);
yueee_yt 0:7766f6712673 926 p += l1;
yueee_yt 0:7766f6712673 927 } else
yueee_yt 0:7766f6712673 928 #endif /* PPPOE_TODO */
yueee_yt 0:7766f6712673 929 {
yueee_yt 0:7766f6712673 930 PPPOE_ADD_16(p, 0);
yueee_yt 0:7766f6712673 931 }
yueee_yt 0:7766f6712673 932 if (sc->sc_ac_cookie_len > 0) {
yueee_yt 0:7766f6712673 933 PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
yueee_yt 0:7766f6712673 934 PPPOE_ADD_16(p, sc->sc_ac_cookie_len);
yueee_yt 0:7766f6712673 935 MEMCPY(p, sc->sc_ac_cookie, sc->sc_ac_cookie_len);
yueee_yt 0:7766f6712673 936 p += sc->sc_ac_cookie_len;
yueee_yt 0:7766f6712673 937 }
yueee_yt 0:7766f6712673 938 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
yueee_yt 0:7766f6712673 939 PPPOE_ADD_16(p, sizeof(sc));
yueee_yt 0:7766f6712673 940 MEMCPY(p, &sc, sizeof sc);
yueee_yt 0:7766f6712673 941
yueee_yt 0:7766f6712673 942 return pppoe_output(sc, pb);
yueee_yt 0:7766f6712673 943 }
yueee_yt 0:7766f6712673 944
yueee_yt 0:7766f6712673 945 /* send a PADT packet */
yueee_yt 0:7766f6712673 946 static err_t
yueee_yt 0:7766f6712673 947 pppoe_send_padt(struct netif *outgoing_if, u_int session, const u8_t *dest)
yueee_yt 0:7766f6712673 948 {
yueee_yt 0:7766f6712673 949 struct pbuf *pb;
yueee_yt 0:7766f6712673 950 struct eth_hdr *ethhdr;
yueee_yt 0:7766f6712673 951 err_t res;
yueee_yt 0:7766f6712673 952 u8_t *p;
yueee_yt 0:7766f6712673 953
yueee_yt 0:7766f6712673 954 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN, PBUF_RAM);
yueee_yt 0:7766f6712673 955 if (!pb) {
yueee_yt 0:7766f6712673 956 return ERR_MEM;
yueee_yt 0:7766f6712673 957 }
yueee_yt 0:7766f6712673 958 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
yueee_yt 0:7766f6712673 959
yueee_yt 0:7766f6712673 960 ethhdr = (struct eth_hdr *)pb->payload;
yueee_yt 0:7766f6712673 961 ethhdr->type = PP_HTONS(ETHTYPE_PPPOEDISC);
yueee_yt 0:7766f6712673 962 MEMCPY(ethhdr->dest.addr, dest, sizeof(ethhdr->dest.addr));
yueee_yt 0:7766f6712673 963 MEMCPY(ethhdr->src.addr, ((struct eth_addr *)outgoing_if->hwaddr)->addr, sizeof(ethhdr->src.addr));
yueee_yt 0:7766f6712673 964
yueee_yt 0:7766f6712673 965 p = (u8_t*)(ethhdr + 1);
yueee_yt 0:7766f6712673 966 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADT, session, 0);
yueee_yt 0:7766f6712673 967
yueee_yt 0:7766f6712673 968 res = outgoing_if->linkoutput(outgoing_if, pb);
yueee_yt 0:7766f6712673 969
yueee_yt 0:7766f6712673 970 pbuf_free(pb);
yueee_yt 0:7766f6712673 971
yueee_yt 0:7766f6712673 972 return res;
yueee_yt 0:7766f6712673 973 }
yueee_yt 0:7766f6712673 974
yueee_yt 0:7766f6712673 975 #ifdef PPPOE_SERVER
yueee_yt 0:7766f6712673 976 static err_t
yueee_yt 0:7766f6712673 977 pppoe_send_pado(struct pppoe_softc *sc)
yueee_yt 0:7766f6712673 978 {
yueee_yt 0:7766f6712673 979 struct pbuf *pb;
yueee_yt 0:7766f6712673 980 u8_t *p;
yueee_yt 0:7766f6712673 981 size_t len;
yueee_yt 0:7766f6712673 982
yueee_yt 0:7766f6712673 983 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
yueee_yt 0:7766f6712673 984 return ERR_CONN;
yueee_yt 0:7766f6712673 985 }
yueee_yt 0:7766f6712673 986
yueee_yt 0:7766f6712673 987 /* calc length */
yueee_yt 0:7766f6712673 988 len = 0;
yueee_yt 0:7766f6712673 989 /* include ac_cookie */
yueee_yt 0:7766f6712673 990 len += 2 + 2 + sizeof(sc);
yueee_yt 0:7766f6712673 991 /* include hunique */
yueee_yt 0:7766f6712673 992 len += 2 + 2 + sc->sc_hunique_len;
yueee_yt 0:7766f6712673 993 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
yueee_yt 0:7766f6712673 994 if (!pb) {
yueee_yt 0:7766f6712673 995 return ERR_MEM;
yueee_yt 0:7766f6712673 996 }
yueee_yt 0:7766f6712673 997 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
yueee_yt 0:7766f6712673 998 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
yueee_yt 0:7766f6712673 999 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADO, 0, len);
yueee_yt 0:7766f6712673 1000 PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
yueee_yt 0:7766f6712673 1001 PPPOE_ADD_16(p, sizeof(sc));
yueee_yt 0:7766f6712673 1002 MEMCPY(p, &sc, sizeof(sc));
yueee_yt 0:7766f6712673 1003 p += sizeof(sc);
yueee_yt 0:7766f6712673 1004 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
yueee_yt 0:7766f6712673 1005 PPPOE_ADD_16(p, sc->sc_hunique_len);
yueee_yt 0:7766f6712673 1006 MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
yueee_yt 0:7766f6712673 1007 return pppoe_output(sc, pb);
yueee_yt 0:7766f6712673 1008 }
yueee_yt 0:7766f6712673 1009
yueee_yt 0:7766f6712673 1010 static err_t
yueee_yt 0:7766f6712673 1011 pppoe_send_pads(struct pppoe_softc *sc)
yueee_yt 0:7766f6712673 1012 {
yueee_yt 0:7766f6712673 1013 struct pbuf *pb;
yueee_yt 0:7766f6712673 1014 u8_t *p;
yueee_yt 0:7766f6712673 1015 size_t len, l1 = 0; /* XXX: gcc */
yueee_yt 0:7766f6712673 1016
yueee_yt 0:7766f6712673 1017 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
yueee_yt 0:7766f6712673 1018 return ERR_CONN;
yueee_yt 0:7766f6712673 1019 }
yueee_yt 0:7766f6712673 1020
yueee_yt 0:7766f6712673 1021 sc->sc_session = mono_time.tv_sec % 0xff + 1;
yueee_yt 0:7766f6712673 1022 /* calc length */
yueee_yt 0:7766f6712673 1023 len = 0;
yueee_yt 0:7766f6712673 1024 /* include hunique */
yueee_yt 0:7766f6712673 1025 len += 2 + 2 + 2 + 2 + sc->sc_hunique_len; /* service name, host unique*/
yueee_yt 0:7766f6712673 1026 if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
yueee_yt 0:7766f6712673 1027 l1 = strlen(sc->sc_service_name);
yueee_yt 0:7766f6712673 1028 len += l1;
yueee_yt 0:7766f6712673 1029 }
yueee_yt 0:7766f6712673 1030 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
yueee_yt 0:7766f6712673 1031 if (!pb) {
yueee_yt 0:7766f6712673 1032 return ERR_MEM;
yueee_yt 0:7766f6712673 1033 }
yueee_yt 0:7766f6712673 1034 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
yueee_yt 0:7766f6712673 1035 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
yueee_yt 0:7766f6712673 1036 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADS, sc->sc_session, len);
yueee_yt 0:7766f6712673 1037 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
yueee_yt 0:7766f6712673 1038 if (sc->sc_service_name != NULL) {
yueee_yt 0:7766f6712673 1039 PPPOE_ADD_16(p, l1);
yueee_yt 0:7766f6712673 1040 MEMCPY(p, sc->sc_service_name, l1);
yueee_yt 0:7766f6712673 1041 p += l1;
yueee_yt 0:7766f6712673 1042 } else {
yueee_yt 0:7766f6712673 1043 PPPOE_ADD_16(p, 0);
yueee_yt 0:7766f6712673 1044 }
yueee_yt 0:7766f6712673 1045 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
yueee_yt 0:7766f6712673 1046 PPPOE_ADD_16(p, sc->sc_hunique_len);
yueee_yt 0:7766f6712673 1047 MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
yueee_yt 0:7766f6712673 1048 return pppoe_output(sc, pb);
yueee_yt 0:7766f6712673 1049 }
yueee_yt 0:7766f6712673 1050 #endif
yueee_yt 0:7766f6712673 1051
yueee_yt 0:7766f6712673 1052 err_t
yueee_yt 0:7766f6712673 1053 pppoe_xmit(struct pppoe_softc *sc, struct pbuf *pb)
yueee_yt 0:7766f6712673 1054 {
yueee_yt 0:7766f6712673 1055 u8_t *p;
yueee_yt 0:7766f6712673 1056 size_t len;
yueee_yt 0:7766f6712673 1057
yueee_yt 0:7766f6712673 1058 /* are we ready to process data yet? */
yueee_yt 0:7766f6712673 1059 if (sc->sc_state < PPPOE_STATE_SESSION) {
yueee_yt 0:7766f6712673 1060 /*sppp_flush(&sc->sc_sppp.pp_if);*/
yueee_yt 0:7766f6712673 1061 pbuf_free(pb);
yueee_yt 0:7766f6712673 1062 return ERR_CONN;
yueee_yt 0:7766f6712673 1063 }
yueee_yt 0:7766f6712673 1064
yueee_yt 0:7766f6712673 1065 len = pb->tot_len;
yueee_yt 0:7766f6712673 1066
yueee_yt 0:7766f6712673 1067 /* make room for Ethernet header - should not fail */
yueee_yt 0:7766f6712673 1068 if (pbuf_header(pb, sizeof(struct eth_hdr) + PPPOE_HEADERLEN) != 0) {
yueee_yt 0:7766f6712673 1069 /* bail out */
yueee_yt 0:7766f6712673 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));
yueee_yt 0:7766f6712673 1071 LINK_STATS_INC(link.lenerr);
yueee_yt 0:7766f6712673 1072 pbuf_free(pb);
yueee_yt 0:7766f6712673 1073 return ERR_BUF;
yueee_yt 0:7766f6712673 1074 }
yueee_yt 0:7766f6712673 1075
yueee_yt 0:7766f6712673 1076 p = (u8_t*)pb->payload + sizeof(struct eth_hdr);
yueee_yt 0:7766f6712673 1077 PPPOE_ADD_HEADER(p, 0, sc->sc_session, len);
yueee_yt 0:7766f6712673 1078
yueee_yt 0:7766f6712673 1079 return pppoe_output(sc, pb);
yueee_yt 0:7766f6712673 1080 }
yueee_yt 0:7766f6712673 1081
yueee_yt 0:7766f6712673 1082 #if 0 /*def PFIL_HOOKS*/
yueee_yt 0:7766f6712673 1083 static int
yueee_yt 0:7766f6712673 1084 pppoe_ifattach_hook(void *arg, struct pbuf **mp, struct netif *ifp, int dir)
yueee_yt 0:7766f6712673 1085 {
yueee_yt 0:7766f6712673 1086 struct pppoe_softc *sc;
yueee_yt 0:7766f6712673 1087 int s;
yueee_yt 0:7766f6712673 1088
yueee_yt 0:7766f6712673 1089 if (mp != (struct pbuf **)PFIL_IFNET_DETACH) {
yueee_yt 0:7766f6712673 1090 return 0;
yueee_yt 0:7766f6712673 1091 }
yueee_yt 0:7766f6712673 1092
yueee_yt 0:7766f6712673 1093 LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
yueee_yt 0:7766f6712673 1094 if (sc->sc_ethif != ifp) {
yueee_yt 0:7766f6712673 1095 continue;
yueee_yt 0:7766f6712673 1096 }
yueee_yt 0:7766f6712673 1097 if (sc->sc_sppp.pp_if.if_flags & IFF_UP) {
yueee_yt 0:7766f6712673 1098 sc->sc_sppp.pp_if.if_flags &= ~(IFF_UP|IFF_RUNNING);
yueee_yt 0:7766f6712673 1099 printf("%c%c%"U16_F": ethernet interface detached, going down\n",
yueee_yt 0:7766f6712673 1100 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
yueee_yt 0:7766f6712673 1101 }
yueee_yt 0:7766f6712673 1102 sc->sc_ethif = NULL;
yueee_yt 0:7766f6712673 1103 pppoe_clear_softc(sc, "ethernet interface detached");
yueee_yt 0:7766f6712673 1104 }
yueee_yt 0:7766f6712673 1105
yueee_yt 0:7766f6712673 1106 return 0;
yueee_yt 0:7766f6712673 1107 }
yueee_yt 0:7766f6712673 1108 #endif
yueee_yt 0:7766f6712673 1109
yueee_yt 0:7766f6712673 1110 static void
yueee_yt 0:7766f6712673 1111 pppoe_clear_softc(struct pppoe_softc *sc, const char *message)
yueee_yt 0:7766f6712673 1112 {
yueee_yt 0:7766f6712673 1113 LWIP_UNUSED_ARG(message);
yueee_yt 0:7766f6712673 1114
yueee_yt 0:7766f6712673 1115 /* stop timer */
yueee_yt 0:7766f6712673 1116 sys_untimeout(pppoe_timeout, sc);
yueee_yt 0:7766f6712673 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));
yueee_yt 0:7766f6712673 1118
yueee_yt 0:7766f6712673 1119 /* fix our state */
yueee_yt 0:7766f6712673 1120 sc->sc_state = PPPOE_STATE_INITIAL;
yueee_yt 0:7766f6712673 1121
yueee_yt 0:7766f6712673 1122 /* notify upper layers */
yueee_yt 0:7766f6712673 1123 sc->sc_linkStatusCB(sc->sc_pd, 0);
yueee_yt 0:7766f6712673 1124
yueee_yt 0:7766f6712673 1125 /* clean up softc */
yueee_yt 0:7766f6712673 1126 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
yueee_yt 0:7766f6712673 1127 sc->sc_ac_cookie_len = 0;
yueee_yt 0:7766f6712673 1128 sc->sc_session = 0;
yueee_yt 0:7766f6712673 1129 }
yueee_yt 0:7766f6712673 1130
yueee_yt 0:7766f6712673 1131 #endif /* PPPOE_SUPPORT */
yueee_yt 0:7766f6712673 1132