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Dependencies:   mbed

NetServices/lwip/netif/ppp/ppp_oe.c@1:f5ac63519541, 2014-03-05 (annotated)

Committer:
Michael J. Spencer
Date:
Wed Mar 05 06:14:02 2014 -0800
Revision:
1:f5ac63519541
Initial commit.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Michael J. Spencer 1:f5ac63519541 1 /*****************************************************************************
Michael J. Spencer 1:f5ac63519541 2 * ppp_oe.c - PPP Over Ethernet implementation for lwIP.
Michael J. Spencer 1:f5ac63519541 3 *
Michael J. Spencer 1:f5ac63519541 4 * Copyright (c) 2006 by Marc Boucher, Services Informatiques (MBSI) inc.
Michael J. Spencer 1:f5ac63519541 5 *
Michael J. Spencer 1:f5ac63519541 6 * The authors hereby grant permission to use, copy, modify, distribute,
Michael J. Spencer 1:f5ac63519541 7 * and license this software and its documentation for any purpose, provided
Michael J. Spencer 1:f5ac63519541 8 * that existing copyright notices are retained in all copies and that this
Michael J. Spencer 1:f5ac63519541 9 * notice and the following disclaimer are included verbatim in any
Michael J. Spencer 1:f5ac63519541 10 * distributions. No written agreement, license, or royalty fee is required
Michael J. Spencer 1:f5ac63519541 11 * for any of the authorized uses.
Michael J. Spencer 1:f5ac63519541 12 *
Michael J. Spencer 1:f5ac63519541 13 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
Michael J. Spencer 1:f5ac63519541 14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
Michael J. Spencer 1:f5ac63519541 15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
Michael J. Spencer 1:f5ac63519541 16 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
Michael J. Spencer 1:f5ac63519541 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
Michael J. Spencer 1:f5ac63519541 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
Michael J. Spencer 1:f5ac63519541 19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
Michael J. Spencer 1:f5ac63519541 20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Michael J. Spencer 1:f5ac63519541 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
Michael J. Spencer 1:f5ac63519541 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Michael J. Spencer 1:f5ac63519541 23 *
Michael J. Spencer 1:f5ac63519541 24 ******************************************************************************
Michael J. Spencer 1:f5ac63519541 25 * REVISION HISTORY
Michael J. Spencer 1:f5ac63519541 26 *
Michael J. Spencer 1:f5ac63519541 27 * 06-01-01 Marc Boucher <marc@mbsi.ca>
Michael J. Spencer 1:f5ac63519541 28 * Ported to lwIP.
Michael J. Spencer 1:f5ac63519541 29 *****************************************************************************/
Michael J. Spencer 1:f5ac63519541 30
Michael J. Spencer 1:f5ac63519541 31
Michael J. Spencer 1:f5ac63519541 32
Michael J. Spencer 1:f5ac63519541 33 /* based on NetBSD: if_pppoe.c,v 1.64 2006/01/31 23:50:15 martin Exp */
Michael J. Spencer 1:f5ac63519541 34
Michael J. Spencer 1:f5ac63519541 35 /*-
Michael J. Spencer 1:f5ac63519541 36 * Copyright (c) 2002 The NetBSD Foundation, Inc.
Michael J. Spencer 1:f5ac63519541 37 * All rights reserved.
Michael J. Spencer 1:f5ac63519541 38 *
Michael J. Spencer 1:f5ac63519541 39 * This code is derived from software contributed to The NetBSD Foundation
Michael J. Spencer 1:f5ac63519541 40 * by Martin Husemann <martin@NetBSD.org>.
Michael J. Spencer 1:f5ac63519541 41 *
Michael J. Spencer 1:f5ac63519541 42 * Redistribution and use in source and binary forms, with or without
Michael J. Spencer 1:f5ac63519541 43 * modification, are permitted provided that the following conditions
Michael J. Spencer 1:f5ac63519541 44 * are met:
Michael J. Spencer 1:f5ac63519541 45 * 1. Redistributions of source code must retain the above copyright
Michael J. Spencer 1:f5ac63519541 46 * notice, this list of conditions and the following disclaimer.
Michael J. Spencer 1:f5ac63519541 47 * 2. Redistributions in binary form must reproduce the above copyright
Michael J. Spencer 1:f5ac63519541 48 * notice, this list of conditions and the following disclaimer in the
Michael J. Spencer 1:f5ac63519541 49 * documentation and/or other materials provided with the distribution.
Michael J. Spencer 1:f5ac63519541 50 * 3. All advertising materials mentioning features or use of this software
Michael J. Spencer 1:f5ac63519541 51 * must display the following acknowledgement:
Michael J. Spencer 1:f5ac63519541 52 * This product includes software developed by the NetBSD
Michael J. Spencer 1:f5ac63519541 53 * Foundation, Inc. and its contributors.
Michael J. Spencer 1:f5ac63519541 54 * 4. Neither the name of The NetBSD Foundation nor the names of its
Michael J. Spencer 1:f5ac63519541 55 * contributors may be used to endorse or promote products derived
Michael J. Spencer 1:f5ac63519541 56 * from this software without specific prior written permission.
Michael J. Spencer 1:f5ac63519541 57 *
Michael J. Spencer 1:f5ac63519541 58 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
Michael J. Spencer 1:f5ac63519541 59 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
Michael J. Spencer 1:f5ac63519541 60 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
Michael J. Spencer 1:f5ac63519541 61 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
Michael J. Spencer 1:f5ac63519541 62 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
Michael J. Spencer 1:f5ac63519541 63 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
Michael J. Spencer 1:f5ac63519541 64 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
Michael J. Spencer 1:f5ac63519541 65 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
Michael J. Spencer 1:f5ac63519541 66 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
Michael J. Spencer 1:f5ac63519541 67 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
Michael J. Spencer 1:f5ac63519541 68 * POSSIBILITY OF SUCH DAMAGE.
Michael J. Spencer 1:f5ac63519541 69 */
Michael J. Spencer 1:f5ac63519541 70
Michael J. Spencer 1:f5ac63519541 71 #include "lwip/opt.h"
Michael J. Spencer 1:f5ac63519541 72
Michael J. Spencer 1:f5ac63519541 73 #if PPPOE_SUPPORT /* don't build if not configured for use in lwipopts.h */
Michael J. Spencer 1:f5ac63519541 74
Michael J. Spencer 1:f5ac63519541 75 #include "netif/ppp_oe.h"
Michael J. Spencer 1:f5ac63519541 76
Michael J. Spencer 1:f5ac63519541 77 #include "ppp.h"
Michael J. Spencer 1:f5ac63519541 78 #include "pppdebug.h"
Michael J. Spencer 1:f5ac63519541 79
Michael J. Spencer 1:f5ac63519541 80 #include "lwip/timers.h"
Michael J. Spencer 1:f5ac63519541 81 #include "lwip/memp.h"
Michael J. Spencer 1:f5ac63519541 82
Michael J. Spencer 1:f5ac63519541 83 #include <string.h>
Michael J. Spencer 1:f5ac63519541 84 #include <stdio.h>
Michael J. Spencer 1:f5ac63519541 85
Michael J. Spencer 1:f5ac63519541 86
Michael J. Spencer 1:f5ac63519541 87 /* Add a 16 bit unsigned value to a buffer pointed to by PTR */
Michael J. Spencer 1:f5ac63519541 88 #define PPPOE_ADD_16(PTR, VAL) \
Michael J. Spencer 1:f5ac63519541 89 *(PTR)++ = (u8_t)((VAL) / 256); \
Michael J. Spencer 1:f5ac63519541 90 *(PTR)++ = (u8_t)((VAL) % 256)
Michael J. Spencer 1:f5ac63519541 91
Michael J. Spencer 1:f5ac63519541 92 /* Add a complete PPPoE header to the buffer pointed to by PTR */
Michael J. Spencer 1:f5ac63519541 93 #define PPPOE_ADD_HEADER(PTR, CODE, SESS, LEN) \
Michael J. Spencer 1:f5ac63519541 94 *(PTR)++ = PPPOE_VERTYPE; \
Michael J. Spencer 1:f5ac63519541 95 *(PTR)++ = (CODE); \
Michael J. Spencer 1:f5ac63519541 96 PPPOE_ADD_16(PTR, SESS); \
Michael J. Spencer 1:f5ac63519541 97 PPPOE_ADD_16(PTR, LEN)
Michael J. Spencer 1:f5ac63519541 98
Michael J. Spencer 1:f5ac63519541 99 #define PPPOE_DISC_TIMEOUT (5*1000) /* base for quick timeout calculation */
Michael J. Spencer 1:f5ac63519541 100 #define PPPOE_SLOW_RETRY (60*1000) /* persistent retry interval */
Michael J. Spencer 1:f5ac63519541 101 #define PPPOE_DISC_MAXPADI 4 /* retry PADI four times (quickly) */
Michael J. Spencer 1:f5ac63519541 102 #define PPPOE_DISC_MAXPADR 2 /* retry PADR twice */
Michael J. Spencer 1:f5ac63519541 103
Michael J. Spencer 1:f5ac63519541 104 #ifdef PPPOE_SERVER
Michael J. Spencer 1:f5ac63519541 105 #error "PPPOE_SERVER is not yet supported under lwIP!"
Michael J. Spencer 1:f5ac63519541 106 /* from if_spppsubr.c */
Michael J. Spencer 1:f5ac63519541 107 #define IFF_PASSIVE IFF_LINK0 /* wait passively for connection */
Michael J. Spencer 1:f5ac63519541 108 #endif
Michael J. Spencer 1:f5ac63519541 109
Michael J. Spencer 1:f5ac63519541 110 #ifndef PPPOE_ERRORSTRING_LEN
Michael J. Spencer 1:f5ac63519541 111 #define PPPOE_ERRORSTRING_LEN 64
Michael J. Spencer 1:f5ac63519541 112 #endif
Michael J. Spencer 1:f5ac63519541 113 static char pppoe_error_tmp[PPPOE_ERRORSTRING_LEN];
Michael J. Spencer 1:f5ac63519541 114
Michael J. Spencer 1:f5ac63519541 115
Michael J. Spencer 1:f5ac63519541 116 /* input routines */
Michael J. Spencer 1:f5ac63519541 117 static void pppoe_dispatch_disc_pkt(struct netif *, struct pbuf *);
Michael J. Spencer 1:f5ac63519541 118
Michael J. Spencer 1:f5ac63519541 119 /* management routines */
Michael J. Spencer 1:f5ac63519541 120 static int pppoe_do_disconnect(struct pppoe_softc *);
Michael J. Spencer 1:f5ac63519541 121 static void pppoe_abort_connect(struct pppoe_softc *);
Michael J. Spencer 1:f5ac63519541 122 static void pppoe_clear_softc(struct pppoe_softc *, const char *);
Michael J. Spencer 1:f5ac63519541 123
Michael J. Spencer 1:f5ac63519541 124 /* internal timeout handling */
Michael J. Spencer 1:f5ac63519541 125 static void pppoe_timeout(void *);
Michael J. Spencer 1:f5ac63519541 126
Michael J. Spencer 1:f5ac63519541 127 /* sending actual protocol controll packets */
Michael J. Spencer 1:f5ac63519541 128 static err_t pppoe_send_padi(struct pppoe_softc *);
Michael J. Spencer 1:f5ac63519541 129 static err_t pppoe_send_padr(struct pppoe_softc *);
Michael J. Spencer 1:f5ac63519541 130 #ifdef PPPOE_SERVER
Michael J. Spencer 1:f5ac63519541 131 static err_t pppoe_send_pado(struct pppoe_softc *);
Michael J. Spencer 1:f5ac63519541 132 static err_t pppoe_send_pads(struct pppoe_softc *);
Michael J. Spencer 1:f5ac63519541 133 #endif
Michael J. Spencer 1:f5ac63519541 134 static err_t pppoe_send_padt(struct netif *, u_int, const u8_t *);
Michael J. Spencer 1:f5ac63519541 135
Michael J. Spencer 1:f5ac63519541 136 /* internal helper functions */
Michael J. Spencer 1:f5ac63519541 137 static struct pppoe_softc * pppoe_find_softc_by_session(u_int, struct netif *);
Michael J. Spencer 1:f5ac63519541 138 static struct pppoe_softc * pppoe_find_softc_by_hunique(u8_t *, size_t, struct netif *);
Michael J. Spencer 1:f5ac63519541 139
Michael J. Spencer 1:f5ac63519541 140 /** linked list of created pppoe interfaces */
Michael J. Spencer 1:f5ac63519541 141 static struct pppoe_softc *pppoe_softc_list;
Michael J. Spencer 1:f5ac63519541 142
Michael J. Spencer 1:f5ac63519541 143 err_t
Michael J. Spencer 1:f5ac63519541 144 pppoe_create(struct netif *ethif, int pd, void (*linkStatusCB)(int pd, int up), struct pppoe_softc **scptr)
Michael J. Spencer 1:f5ac63519541 145 {
Michael J. Spencer 1:f5ac63519541 146 struct pppoe_softc *sc;
Michael J. Spencer 1:f5ac63519541 147
Michael J. Spencer 1:f5ac63519541 148 sc = (struct pppoe_softc *)memp_malloc(MEMP_PPPOE_IF);
Michael J. Spencer 1:f5ac63519541 149 if (sc == NULL) {
Michael J. Spencer 1:f5ac63519541 150 *scptr = NULL;
Michael J. Spencer 1:f5ac63519541 151 return ERR_MEM;
Michael J. Spencer 1:f5ac63519541 152 }
Michael J. Spencer 1:f5ac63519541 153 memset(sc, 0, sizeof(struct pppoe_softc));
Michael J. Spencer 1:f5ac63519541 154
Michael J. Spencer 1:f5ac63519541 155 /* changed to real address later */
Michael J. Spencer 1:f5ac63519541 156 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
Michael J. Spencer 1:f5ac63519541 157
Michael J. Spencer 1:f5ac63519541 158 sc->sc_pd = pd;
Michael J. Spencer 1:f5ac63519541 159 sc->sc_linkStatusCB = linkStatusCB;
Michael J. Spencer 1:f5ac63519541 160 sc->sc_ethif = ethif;
Michael J. Spencer 1:f5ac63519541 161
Michael J. Spencer 1:f5ac63519541 162 /* put the new interface at the head of the list */
Michael J. Spencer 1:f5ac63519541 163 sc->next = pppoe_softc_list;
Michael J. Spencer 1:f5ac63519541 164 pppoe_softc_list = sc;
Michael J. Spencer 1:f5ac63519541 165
Michael J. Spencer 1:f5ac63519541 166 *scptr = sc;
Michael J. Spencer 1:f5ac63519541 167
Michael J. Spencer 1:f5ac63519541 168 return ERR_OK;
Michael J. Spencer 1:f5ac63519541 169 }
Michael J. Spencer 1:f5ac63519541 170
Michael J. Spencer 1:f5ac63519541 171 err_t
Michael J. Spencer 1:f5ac63519541 172 pppoe_destroy(struct netif *ifp)
Michael J. Spencer 1:f5ac63519541 173 {
Michael J. Spencer 1:f5ac63519541 174 struct pppoe_softc *sc, *prev = NULL;
Michael J. Spencer 1:f5ac63519541 175
Michael J. Spencer 1:f5ac63519541 176 for (sc = pppoe_softc_list; sc != NULL; prev = sc, sc = sc->next) {
Michael J. Spencer 1:f5ac63519541 177 if (sc->sc_ethif == ifp) {
Michael J. Spencer 1:f5ac63519541 178 break;
Michael J. Spencer 1:f5ac63519541 179 }
Michael J. Spencer 1:f5ac63519541 180 }
Michael J. Spencer 1:f5ac63519541 181
Michael J. Spencer 1:f5ac63519541 182 if(!(sc && (sc->sc_ethif == ifp))) {
Michael J. Spencer 1:f5ac63519541 183 return ERR_IF;
Michael J. Spencer 1:f5ac63519541 184 }
Michael J. Spencer 1:f5ac63519541 185
Michael J. Spencer 1:f5ac63519541 186 sys_untimeout(pppoe_timeout, sc);
Michael J. Spencer 1:f5ac63519541 187 if (prev == NULL) {
Michael J. Spencer 1:f5ac63519541 188 /* remove sc from the head of the list */
Michael J. Spencer 1:f5ac63519541 189 pppoe_softc_list = sc->next;
Michael J. Spencer 1:f5ac63519541 190 } else {
Michael J. Spencer 1:f5ac63519541 191 /* remove sc from the list */
Michael J. Spencer 1:f5ac63519541 192 prev->next = sc->next;
Michael J. Spencer 1:f5ac63519541 193 }
Michael J. Spencer 1:f5ac63519541 194
Michael J. Spencer 1:f5ac63519541 195 #ifdef PPPOE_TODO
Michael J. Spencer 1:f5ac63519541 196 if (sc->sc_concentrator_name) {
Michael J. Spencer 1:f5ac63519541 197 mem_free(sc->sc_concentrator_name);
Michael J. Spencer 1:f5ac63519541 198 }
Michael J. Spencer 1:f5ac63519541 199 if (sc->sc_service_name) {
Michael J. Spencer 1:f5ac63519541 200 mem_free(sc->sc_service_name);
Michael J. Spencer 1:f5ac63519541 201 }
Michael J. Spencer 1:f5ac63519541 202 #endif /* PPPOE_TODO */
Michael J. Spencer 1:f5ac63519541 203 memp_free(MEMP_PPPOE_IF, sc);
Michael J. Spencer 1:f5ac63519541 204
Michael J. Spencer 1:f5ac63519541 205 return ERR_OK;
Michael J. Spencer 1:f5ac63519541 206 }
Michael J. Spencer 1:f5ac63519541 207
Michael J. Spencer 1:f5ac63519541 208 /*
Michael J. Spencer 1:f5ac63519541 209 * Find the interface handling the specified session.
Michael J. Spencer 1:f5ac63519541 210 * Note: O(number of sessions open), this is a client-side only, mean
Michael J. Spencer 1:f5ac63519541 211 * and lean implementation, so number of open sessions typically should
Michael J. Spencer 1:f5ac63519541 212 * be 1.
Michael J. Spencer 1:f5ac63519541 213 */
Michael J. Spencer 1:f5ac63519541 214 static struct pppoe_softc *
Michael J. Spencer 1:f5ac63519541 215 pppoe_find_softc_by_session(u_int session, struct netif *rcvif)
Michael J. Spencer 1:f5ac63519541 216 {
Michael J. Spencer 1:f5ac63519541 217 struct pppoe_softc *sc;
Michael J. Spencer 1:f5ac63519541 218
Michael J. Spencer 1:f5ac63519541 219 if (session == 0) {
Michael J. Spencer 1:f5ac63519541 220 return NULL;
Michael J. Spencer 1:f5ac63519541 221 }
Michael J. Spencer 1:f5ac63519541 222
Michael J. Spencer 1:f5ac63519541 223 for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
Michael J. Spencer 1:f5ac63519541 224 if (sc->sc_state == PPPOE_STATE_SESSION
Michael J. Spencer 1:f5ac63519541 225 && sc->sc_session == session) {
Michael J. Spencer 1:f5ac63519541 226 if (sc->sc_ethif == rcvif) {
Michael J. Spencer 1:f5ac63519541 227 return sc;
Michael J. Spencer 1:f5ac63519541 228 } else {
Michael J. Spencer 1:f5ac63519541 229 return NULL;
Michael J. Spencer 1:f5ac63519541 230 }
Michael J. Spencer 1:f5ac63519541 231 }
Michael J. Spencer 1:f5ac63519541 232 }
Michael J. Spencer 1:f5ac63519541 233 return NULL;
Michael J. Spencer 1:f5ac63519541 234 }
Michael J. Spencer 1:f5ac63519541 235
Michael J. Spencer 1:f5ac63519541 236 /* Check host unique token passed and return appropriate softc pointer,
Michael J. Spencer 1:f5ac63519541 237 * or NULL if token is bogus. */
Michael J. Spencer 1:f5ac63519541 238 static struct pppoe_softc *
Michael J. Spencer 1:f5ac63519541 239 pppoe_find_softc_by_hunique(u8_t *token, size_t len, struct netif *rcvif)
Michael J. Spencer 1:f5ac63519541 240 {
Michael J. Spencer 1:f5ac63519541 241 struct pppoe_softc *sc, *t;
Michael J. Spencer 1:f5ac63519541 242
Michael J. Spencer 1:f5ac63519541 243 if (pppoe_softc_list == NULL) {
Michael J. Spencer 1:f5ac63519541 244 return NULL;
Michael J. Spencer 1:f5ac63519541 245 }
Michael J. Spencer 1:f5ac63519541 246
Michael J. Spencer 1:f5ac63519541 247 if (len != sizeof sc) {
Michael J. Spencer 1:f5ac63519541 248 return NULL;
Michael J. Spencer 1:f5ac63519541 249 }
Michael J. Spencer 1:f5ac63519541 250 MEMCPY(&t, token, len);
Michael J. Spencer 1:f5ac63519541 251
Michael J. Spencer 1:f5ac63519541 252 for (sc = pppoe_softc_list; sc != NULL; sc = sc->next) {
Michael J. Spencer 1:f5ac63519541 253 if (sc == t) {
Michael J. Spencer 1:f5ac63519541 254 break;
Michael J. Spencer 1:f5ac63519541 255 }
Michael J. Spencer 1:f5ac63519541 256 }
Michael J. Spencer 1:f5ac63519541 257
Michael J. Spencer 1:f5ac63519541 258 if (sc == NULL) {
Michael J. Spencer 1:f5ac63519541 259 PPPDEBUG(LOG_DEBUG, ("pppoe: alien host unique tag, no session found\n"));
Michael J. Spencer 1:f5ac63519541 260 return NULL;
Michael J. Spencer 1:f5ac63519541 261 }
Michael J. Spencer 1:f5ac63519541 262
Michael J. Spencer 1:f5ac63519541 263 /* should be safe to access *sc now */
Michael J. Spencer 1:f5ac63519541 264 if (sc->sc_state < PPPOE_STATE_PADI_SENT || sc->sc_state >= PPPOE_STATE_SESSION) {
Michael J. Spencer 1:f5ac63519541 265 printf("%c%c%"U16_F": host unique tag found, but it belongs to a connection in state %d\n",
Michael J. Spencer 1:f5ac63519541 266 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, sc->sc_state);
Michael J. Spencer 1:f5ac63519541 267 return NULL;
Michael J. Spencer 1:f5ac63519541 268 }
Michael J. Spencer 1:f5ac63519541 269 if (sc->sc_ethif != rcvif) {
Michael J. Spencer 1:f5ac63519541 270 printf("%c%c%"U16_F": wrong interface, not accepting host unique\n",
Michael J. Spencer 1:f5ac63519541 271 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
Michael J. Spencer 1:f5ac63519541 272 return NULL;
Michael J. Spencer 1:f5ac63519541 273 }
Michael J. Spencer 1:f5ac63519541 274 return sc;
Michael J. Spencer 1:f5ac63519541 275 }
Michael J. Spencer 1:f5ac63519541 276
Michael J. Spencer 1:f5ac63519541 277 static void
Michael J. Spencer 1:f5ac63519541 278 pppoe_linkstatus_up(struct pppoe_softc *sc)
Michael J. Spencer 1:f5ac63519541 279 {
Michael J. Spencer 1:f5ac63519541 280 sc->sc_linkStatusCB(sc->sc_pd, 1);
Michael J. Spencer 1:f5ac63519541 281 }
Michael J. Spencer 1:f5ac63519541 282
Michael J. Spencer 1:f5ac63519541 283 /* analyze and handle a single received packet while not in session state */
Michael J. Spencer 1:f5ac63519541 284 static void
Michael J. Spencer 1:f5ac63519541 285 pppoe_dispatch_disc_pkt(struct netif *netif, struct pbuf *pb)
Michael J. Spencer 1:f5ac63519541 286 {
Michael J. Spencer 1:f5ac63519541 287 u16_t tag, len;
Michael J. Spencer 1:f5ac63519541 288 u16_t session, plen;
Michael J. Spencer 1:f5ac63519541 289 struct pppoe_softc *sc;
Michael J. Spencer 1:f5ac63519541 290 const char *err_msg;
Michael J. Spencer 1:f5ac63519541 291 char devname[6];
Michael J. Spencer 1:f5ac63519541 292 u8_t *ac_cookie;
Michael J. Spencer 1:f5ac63519541 293 u16_t ac_cookie_len;
Michael J. Spencer 1:f5ac63519541 294 #ifdef PPPOE_SERVER
Michael J. Spencer 1:f5ac63519541 295 u8_t *hunique;
Michael J. Spencer 1:f5ac63519541 296 size_t hunique_len;
Michael J. Spencer 1:f5ac63519541 297 #endif
Michael J. Spencer 1:f5ac63519541 298 struct pppoehdr *ph;
Michael J. Spencer 1:f5ac63519541 299 struct pppoetag pt;
Michael J. Spencer 1:f5ac63519541 300 int off, err, errortag;
Michael J. Spencer 1:f5ac63519541 301 struct eth_hdr *ethhdr;
Michael J. Spencer 1:f5ac63519541 302
Michael J. Spencer 1:f5ac63519541 303 pb = pppSingleBuf(pb);
Michael J. Spencer 1:f5ac63519541 304
Michael J. Spencer 1:f5ac63519541 305 strcpy(devname, "pppoe"); /* as long as we don't know which instance */
Michael J. Spencer 1:f5ac63519541 306 err_msg = NULL;
Michael J. Spencer 1:f5ac63519541 307 errortag = 0;
Michael J. Spencer 1:f5ac63519541 308 if (pb->len < sizeof(*ethhdr)) {
Michael J. Spencer 1:f5ac63519541 309 goto done;
Michael J. Spencer 1:f5ac63519541 310 }
Michael J. Spencer 1:f5ac63519541 311 ethhdr = (struct eth_hdr *)pb->payload;
Michael J. Spencer 1:f5ac63519541 312 off = sizeof(*ethhdr);
Michael J. Spencer 1:f5ac63519541 313
Michael J. Spencer 1:f5ac63519541 314 ac_cookie = NULL;
Michael J. Spencer 1:f5ac63519541 315 ac_cookie_len = 0;
Michael J. Spencer 1:f5ac63519541 316 #ifdef PPPOE_SERVER
Michael J. Spencer 1:f5ac63519541 317 hunique = NULL;
Michael J. Spencer 1:f5ac63519541 318 hunique_len = 0;
Michael J. Spencer 1:f5ac63519541 319 #endif
Michael J. Spencer 1:f5ac63519541 320 session = 0;
Michael J. Spencer 1:f5ac63519541 321 if (pb->len - off < PPPOE_HEADERLEN) {
Michael J. Spencer 1:f5ac63519541 322 printf("pppoe: packet too short: %d\n", pb->len);
Michael J. Spencer 1:f5ac63519541 323 goto done;
Michael J. Spencer 1:f5ac63519541 324 }
Michael J. Spencer 1:f5ac63519541 325
Michael J. Spencer 1:f5ac63519541 326 ph = (struct pppoehdr *) (ethhdr + 1);
Michael J. Spencer 1:f5ac63519541 327 if (ph->vertype != PPPOE_VERTYPE) {
Michael J. Spencer 1:f5ac63519541 328 printf("pppoe: unknown version/type packet: 0x%x\n", ph->vertype);
Michael J. Spencer 1:f5ac63519541 329 goto done;
Michael J. Spencer 1:f5ac63519541 330 }
Michael J. Spencer 1:f5ac63519541 331 session = ntohs(ph->session);
Michael J. Spencer 1:f5ac63519541 332 plen = ntohs(ph->plen);
Michael J. Spencer 1:f5ac63519541 333 off += sizeof(*ph);
Michael J. Spencer 1:f5ac63519541 334
Michael J. Spencer 1:f5ac63519541 335 if (plen + off > pb->len) {
Michael J. Spencer 1:f5ac63519541 336 printf("pppoe: packet content does not fit: data available = %d, packet size = %u\n",
Michael J. Spencer 1:f5ac63519541 337 pb->len - off, plen);
Michael J. Spencer 1:f5ac63519541 338 goto done;
Michael J. Spencer 1:f5ac63519541 339 }
Michael J. Spencer 1:f5ac63519541 340 if(pb->tot_len == pb->len) {
Michael J. Spencer 1:f5ac63519541 341 pb->tot_len = pb->len = (u16_t)off + plen; /* ignore trailing garbage */
Michael J. Spencer 1:f5ac63519541 342 }
Michael J. Spencer 1:f5ac63519541 343 tag = 0;
Michael J. Spencer 1:f5ac63519541 344 len = 0;
Michael J. Spencer 1:f5ac63519541 345 sc = NULL;
Michael J. Spencer 1:f5ac63519541 346 while (off + sizeof(pt) <= pb->len) {
Michael J. Spencer 1:f5ac63519541 347 MEMCPY(&pt, (u8_t*)pb->payload + off, sizeof(pt));
Michael J. Spencer 1:f5ac63519541 348 tag = ntohs(pt.tag);
Michael J. Spencer 1:f5ac63519541 349 len = ntohs(pt.len);
Michael J. Spencer 1:f5ac63519541 350 if (off + sizeof(pt) + len > pb->len) {
Michael J. Spencer 1:f5ac63519541 351 printf("pppoe: tag 0x%x len 0x%x is too long\n", tag, len);
Michael J. Spencer 1:f5ac63519541 352 goto done;
Michael J. Spencer 1:f5ac63519541 353 }
Michael J. Spencer 1:f5ac63519541 354 switch (tag) {
Michael J. Spencer 1:f5ac63519541 355 case PPPOE_TAG_EOL:
Michael J. Spencer 1:f5ac63519541 356 goto breakbreak;
Michael J. Spencer 1:f5ac63519541 357 case PPPOE_TAG_SNAME:
Michael J. Spencer 1:f5ac63519541 358 break; /* ignored */
Michael J. Spencer 1:f5ac63519541 359 case PPPOE_TAG_ACNAME:
Michael J. Spencer 1:f5ac63519541 360 break; /* ignored */
Michael J. Spencer 1:f5ac63519541 361 case PPPOE_TAG_HUNIQUE:
Michael J. Spencer 1:f5ac63519541 362 if (sc != NULL) {
Michael J. Spencer 1:f5ac63519541 363 break;
Michael J. Spencer 1:f5ac63519541 364 }
Michael J. Spencer 1:f5ac63519541 365 #ifdef PPPOE_SERVER
Michael J. Spencer 1:f5ac63519541 366 hunique = (u8_t*)pb->payload + off + sizeof(pt);
Michael J. Spencer 1:f5ac63519541 367 hunique_len = len;
Michael J. Spencer 1:f5ac63519541 368 #endif
Michael J. Spencer 1:f5ac63519541 369 sc = pppoe_find_softc_by_hunique((u8_t*)pb->payload + off + sizeof(pt), len, netif);
Michael J. Spencer 1:f5ac63519541 370 if (sc != NULL) {
Michael J. Spencer 1:f5ac63519541 371 snprintf(devname, sizeof(devname), "%c%c%"U16_F, sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
Michael J. Spencer 1:f5ac63519541 372 }
Michael J. Spencer 1:f5ac63519541 373 break;
Michael J. Spencer 1:f5ac63519541 374 case PPPOE_TAG_ACCOOKIE:
Michael J. Spencer 1:f5ac63519541 375 if (ac_cookie == NULL) {
Michael J. Spencer 1:f5ac63519541 376 ac_cookie = (u8_t*)pb->payload + off + sizeof(pt);
Michael J. Spencer 1:f5ac63519541 377 ac_cookie_len = len;
Michael J. Spencer 1:f5ac63519541 378 }
Michael J. Spencer 1:f5ac63519541 379 break;
Michael J. Spencer 1:f5ac63519541 380 case PPPOE_TAG_SNAME_ERR:
Michael J. Spencer 1:f5ac63519541 381 err_msg = "SERVICE NAME ERROR";
Michael J. Spencer 1:f5ac63519541 382 errortag = 1;
Michael J. Spencer 1:f5ac63519541 383 break;
Michael J. Spencer 1:f5ac63519541 384 case PPPOE_TAG_ACSYS_ERR:
Michael J. Spencer 1:f5ac63519541 385 err_msg = "AC SYSTEM ERROR";
Michael J. Spencer 1:f5ac63519541 386 errortag = 1;
Michael J. Spencer 1:f5ac63519541 387 break;
Michael J. Spencer 1:f5ac63519541 388 case PPPOE_TAG_GENERIC_ERR:
Michael J. Spencer 1:f5ac63519541 389 err_msg = "GENERIC ERROR";
Michael J. Spencer 1:f5ac63519541 390 errortag = 1;
Michael J. Spencer 1:f5ac63519541 391 break;
Michael J. Spencer 1:f5ac63519541 392 }
Michael J. Spencer 1:f5ac63519541 393 if (err_msg) {
Michael J. Spencer 1:f5ac63519541 394 if (errortag && len) {
Michael J. Spencer 1:f5ac63519541 395 u16_t error_len = LWIP_MIN(len, sizeof(pppoe_error_tmp)-1);
Michael J. Spencer 1:f5ac63519541 396 strncpy(pppoe_error_tmp, (char*)pb->payload + off + sizeof(pt), error_len);
Michael J. Spencer 1:f5ac63519541 397 pppoe_error_tmp[error_len-1] = '\0';
Michael J. Spencer 1:f5ac63519541 398 printf("%s: %s: %s\n", devname, err_msg, pppoe_error_tmp);
Michael J. Spencer 1:f5ac63519541 399 } else {
Michael J. Spencer 1:f5ac63519541 400 printf("%s: %s\n", devname, err_msg);
Michael J. Spencer 1:f5ac63519541 401 }
Michael J. Spencer 1:f5ac63519541 402 if (errortag) {
Michael J. Spencer 1:f5ac63519541 403 goto done;
Michael J. Spencer 1:f5ac63519541 404 }
Michael J. Spencer 1:f5ac63519541 405 }
Michael J. Spencer 1:f5ac63519541 406 off += sizeof(pt) + len;
Michael J. Spencer 1:f5ac63519541 407 }
Michael J. Spencer 1:f5ac63519541 408
Michael J. Spencer 1:f5ac63519541 409 breakbreak:;
Michael J. Spencer 1:f5ac63519541 410 switch (ph->code) {
Michael J. Spencer 1:f5ac63519541 411 case PPPOE_CODE_PADI:
Michael J. Spencer 1:f5ac63519541 412 #ifdef PPPOE_SERVER
Michael J. Spencer 1:f5ac63519541 413 /*
Michael J. Spencer 1:f5ac63519541 414 * got service name, concentrator name, and/or host unique.
Michael J. Spencer 1:f5ac63519541 415 * ignore if we have no interfaces with IFF_PASSIVE|IFF_UP.
Michael J. Spencer 1:f5ac63519541 416 */
Michael J. Spencer 1:f5ac63519541 417 if (LIST_EMPTY(&pppoe_softc_list)) {
Michael J. Spencer 1:f5ac63519541 418 goto done;
Michael J. Spencer 1:f5ac63519541 419 }
Michael J. Spencer 1:f5ac63519541 420 LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
Michael J. Spencer 1:f5ac63519541 421 if (!(sc->sc_sppp.pp_if.if_flags & IFF_UP)) {
Michael J. Spencer 1:f5ac63519541 422 continue;
Michael J. Spencer 1:f5ac63519541 423 }
Michael J. Spencer 1:f5ac63519541 424 if (!(sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
Michael J. Spencer 1:f5ac63519541 425 continue;
Michael J. Spencer 1:f5ac63519541 426 }
Michael J. Spencer 1:f5ac63519541 427 if (sc->sc_state == PPPOE_STATE_INITIAL) {
Michael J. Spencer 1:f5ac63519541 428 break;
Michael J. Spencer 1:f5ac63519541 429 }
Michael J. Spencer 1:f5ac63519541 430 }
Michael J. Spencer 1:f5ac63519541 431 if (sc == NULL) {
Michael J. Spencer 1:f5ac63519541 432 /* printf("pppoe: free passive interface is not found\n"); */
Michael J. Spencer 1:f5ac63519541 433 goto done;
Michael J. Spencer 1:f5ac63519541 434 }
Michael J. Spencer 1:f5ac63519541 435 if (hunique) {
Michael J. Spencer 1:f5ac63519541 436 if (sc->sc_hunique) {
Michael J. Spencer 1:f5ac63519541 437 mem_free(sc->sc_hunique);
Michael J. Spencer 1:f5ac63519541 438 }
Michael J. Spencer 1:f5ac63519541 439 sc->sc_hunique = mem_malloc(hunique_len);
Michael J. Spencer 1:f5ac63519541 440 if (sc->sc_hunique == NULL) {
Michael J. Spencer 1:f5ac63519541 441 goto done;
Michael J. Spencer 1:f5ac63519541 442 }
Michael J. Spencer 1:f5ac63519541 443 sc->sc_hunique_len = hunique_len;
Michael J. Spencer 1:f5ac63519541 444 MEMCPY(sc->sc_hunique, hunique, hunique_len);
Michael J. Spencer 1:f5ac63519541 445 }
Michael J. Spencer 1:f5ac63519541 446 MEMCPY(&sc->sc_dest, eh->ether_shost, sizeof sc->sc_dest);
Michael J. Spencer 1:f5ac63519541 447 sc->sc_state = PPPOE_STATE_PADO_SENT;
Michael J. Spencer 1:f5ac63519541 448 pppoe_send_pado(sc);
Michael J. Spencer 1:f5ac63519541 449 break;
Michael J. Spencer 1:f5ac63519541 450 #endif /* PPPOE_SERVER */
Michael J. Spencer 1:f5ac63519541 451 case PPPOE_CODE_PADR:
Michael J. Spencer 1:f5ac63519541 452 #ifdef PPPOE_SERVER
Michael J. Spencer 1:f5ac63519541 453 /*
Michael J. Spencer 1:f5ac63519541 454 * get sc from ac_cookie if IFF_PASSIVE
Michael J. Spencer 1:f5ac63519541 455 */
Michael J. Spencer 1:f5ac63519541 456 if (ac_cookie == NULL) {
Michael J. Spencer 1:f5ac63519541 457 /* be quiet if there is not a single pppoe instance */
Michael J. Spencer 1:f5ac63519541 458 printf("pppoe: received PADR but not includes ac_cookie\n");
Michael J. Spencer 1:f5ac63519541 459 goto done;
Michael J. Spencer 1:f5ac63519541 460 }
Michael J. Spencer 1:f5ac63519541 461 sc = pppoe_find_softc_by_hunique(ac_cookie, ac_cookie_len, netif);
Michael J. Spencer 1:f5ac63519541 462 if (sc == NULL) {
Michael J. Spencer 1:f5ac63519541 463 /* be quiet if there is not a single pppoe instance */
Michael J. Spencer 1:f5ac63519541 464 if (!LIST_EMPTY(&pppoe_softc_list)) {
Michael J. Spencer 1:f5ac63519541 465 printf("pppoe: received PADR but could not find request for it\n");
Michael J. Spencer 1:f5ac63519541 466 }
Michael J. Spencer 1:f5ac63519541 467 goto done;
Michael J. Spencer 1:f5ac63519541 468 }
Michael J. Spencer 1:f5ac63519541 469 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
Michael J. Spencer 1:f5ac63519541 470 printf("%c%c%"U16_F": received unexpected PADR\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
Michael J. Spencer 1:f5ac63519541 471 goto done;
Michael J. Spencer 1:f5ac63519541 472 }
Michael J. Spencer 1:f5ac63519541 473 if (hunique) {
Michael J. Spencer 1:f5ac63519541 474 if (sc->sc_hunique) {
Michael J. Spencer 1:f5ac63519541 475 mem_free(sc->sc_hunique);
Michael J. Spencer 1:f5ac63519541 476 }
Michael J. Spencer 1:f5ac63519541 477 sc->sc_hunique = mem_malloc(hunique_len);
Michael J. Spencer 1:f5ac63519541 478 if (sc->sc_hunique == NULL) {
Michael J. Spencer 1:f5ac63519541 479 goto done;
Michael J. Spencer 1:f5ac63519541 480 }
Michael J. Spencer 1:f5ac63519541 481 sc->sc_hunique_len = hunique_len;
Michael J. Spencer 1:f5ac63519541 482 MEMCPY(sc->sc_hunique, hunique, hunique_len);
Michael J. Spencer 1:f5ac63519541 483 }
Michael J. Spencer 1:f5ac63519541 484 pppoe_send_pads(sc);
Michael J. Spencer 1:f5ac63519541 485 sc->sc_state = PPPOE_STATE_SESSION;
Michael J. Spencer 1:f5ac63519541 486 pppoe_linkstatus_up(sc); /* notify upper layers */
Michael J. Spencer 1:f5ac63519541 487 break;
Michael J. Spencer 1:f5ac63519541 488 #else
Michael J. Spencer 1:f5ac63519541 489 /* ignore, we are no access concentrator */
Michael J. Spencer 1:f5ac63519541 490 goto done;
Michael J. Spencer 1:f5ac63519541 491 #endif /* PPPOE_SERVER */
Michael J. Spencer 1:f5ac63519541 492 case PPPOE_CODE_PADO:
Michael J. Spencer 1:f5ac63519541 493 if (sc == NULL) {
Michael J. Spencer 1:f5ac63519541 494 /* be quiet if there is not a single pppoe instance */
Michael J. Spencer 1:f5ac63519541 495 if (pppoe_softc_list != NULL) {
Michael J. Spencer 1:f5ac63519541 496 printf("pppoe: received PADO but could not find request for it\n");
Michael J. Spencer 1:f5ac63519541 497 }
Michael J. Spencer 1:f5ac63519541 498 goto done;
Michael J. Spencer 1:f5ac63519541 499 }
Michael J. Spencer 1:f5ac63519541 500 if (sc->sc_state != PPPOE_STATE_PADI_SENT) {
Michael J. Spencer 1:f5ac63519541 501 printf("%c%c%"U16_F": received unexpected PADO\n", sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
Michael J. Spencer 1:f5ac63519541 502 goto done;
Michael J. Spencer 1:f5ac63519541 503 }
Michael J. Spencer 1:f5ac63519541 504 if (ac_cookie) {
Michael J. Spencer 1:f5ac63519541 505 sc->sc_ac_cookie_len = ac_cookie_len;
Michael J. Spencer 1:f5ac63519541 506 MEMCPY(sc->sc_ac_cookie, ac_cookie, ac_cookie_len);
Michael J. Spencer 1:f5ac63519541 507 }
Michael J. Spencer 1:f5ac63519541 508 MEMCPY(&sc->sc_dest, ethhdr->src.addr, sizeof(sc->sc_dest.addr));
Michael J. Spencer 1:f5ac63519541 509 sys_untimeout(pppoe_timeout, sc);
Michael J. Spencer 1:f5ac63519541 510 sc->sc_padr_retried = 0;
Michael J. Spencer 1:f5ac63519541 511 sc->sc_state = PPPOE_STATE_PADR_SENT;
Michael J. Spencer 1:f5ac63519541 512 if ((err = pppoe_send_padr(sc)) != 0) {
Michael J. Spencer 1:f5ac63519541 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));
Michael J. Spencer 1:f5ac63519541 514 }
Michael J. Spencer 1:f5ac63519541 515 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
Michael J. Spencer 1:f5ac63519541 516 break;
Michael J. Spencer 1:f5ac63519541 517 case PPPOE_CODE_PADS:
Michael J. Spencer 1:f5ac63519541 518 if (sc == NULL) {
Michael J. Spencer 1:f5ac63519541 519 goto done;
Michael J. Spencer 1:f5ac63519541 520 }
Michael J. Spencer 1:f5ac63519541 521 sc->sc_session = session;
Michael J. Spencer 1:f5ac63519541 522 sys_untimeout(pppoe_timeout, sc);
Michael J. Spencer 1:f5ac63519541 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));
Michael J. Spencer 1:f5ac63519541 524 sc->sc_state = PPPOE_STATE_SESSION;
Michael J. Spencer 1:f5ac63519541 525 pppoe_linkstatus_up(sc); /* notify upper layers */
Michael J. Spencer 1:f5ac63519541 526 break;
Michael J. Spencer 1:f5ac63519541 527 case PPPOE_CODE_PADT:
Michael J. Spencer 1:f5ac63519541 528 if (sc == NULL) {
Michael J. Spencer 1:f5ac63519541 529 goto done;
Michael J. Spencer 1:f5ac63519541 530 }
Michael J. Spencer 1:f5ac63519541 531 pppoe_clear_softc(sc, "received PADT");
Michael J. Spencer 1:f5ac63519541 532 break;
Michael J. Spencer 1:f5ac63519541 533 default:
Michael J. Spencer 1:f5ac63519541 534 if(sc) {
Michael J. Spencer 1:f5ac63519541 535 printf("%c%c%"U16_F": unknown code (0x%"X16_F") session = 0x%"X16_F"\n",
Michael J. Spencer 1:f5ac63519541 536 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
Michael J. Spencer 1:f5ac63519541 537 (u16_t)ph->code, session);
Michael J. Spencer 1:f5ac63519541 538 } else {
Michael J. Spencer 1:f5ac63519541 539 printf("pppoe: unknown code (0x%"X16_F") session = 0x%"X16_F"\n", (u16_t)ph->code, session);
Michael J. Spencer 1:f5ac63519541 540 }
Michael J. Spencer 1:f5ac63519541 541 break;
Michael J. Spencer 1:f5ac63519541 542 }
Michael J. Spencer 1:f5ac63519541 543
Michael J. Spencer 1:f5ac63519541 544 done:
Michael J. Spencer 1:f5ac63519541 545 pbuf_free(pb);
Michael J. Spencer 1:f5ac63519541 546 return;
Michael J. Spencer 1:f5ac63519541 547 }
Michael J. Spencer 1:f5ac63519541 548
Michael J. Spencer 1:f5ac63519541 549 void
Michael J. Spencer 1:f5ac63519541 550 pppoe_disc_input(struct netif *netif, struct pbuf *p)
Michael J. Spencer 1:f5ac63519541 551 {
Michael J. Spencer 1:f5ac63519541 552 /* avoid error messages if there is not a single pppoe instance */
Michael J. Spencer 1:f5ac63519541 553 if (pppoe_softc_list != NULL) {
Michael J. Spencer 1:f5ac63519541 554 pppoe_dispatch_disc_pkt(netif, p);
Michael J. Spencer 1:f5ac63519541 555 } else {
Michael J. Spencer 1:f5ac63519541 556 pbuf_free(p);
Michael J. Spencer 1:f5ac63519541 557 }
Michael J. Spencer 1:f5ac63519541 558 }
Michael J. Spencer 1:f5ac63519541 559
Michael J. Spencer 1:f5ac63519541 560 void
Michael J. Spencer 1:f5ac63519541 561 pppoe_data_input(struct netif *netif, struct pbuf *pb)
Michael J. Spencer 1:f5ac63519541 562 {
Michael J. Spencer 1:f5ac63519541 563 u16_t session, plen;
Michael J. Spencer 1:f5ac63519541 564 struct pppoe_softc *sc;
Michael J. Spencer 1:f5ac63519541 565 struct pppoehdr *ph;
Michael J. Spencer 1:f5ac63519541 566 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
Michael J. Spencer 1:f5ac63519541 567 u8_t shost[ETHER_ADDR_LEN];
Michael J. Spencer 1:f5ac63519541 568 #endif
Michael J. Spencer 1:f5ac63519541 569
Michael J. Spencer 1:f5ac63519541 570 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
Michael J. Spencer 1:f5ac63519541 571 MEMCPY(shost, ((struct eth_hdr *)pb->payload)->src.addr, sizeof(shost));
Michael J. Spencer 1:f5ac63519541 572 #endif
Michael J. Spencer 1:f5ac63519541 573 if (pbuf_header(pb, -(int)sizeof(struct eth_hdr)) != 0) {
Michael J. Spencer 1:f5ac63519541 574 /* bail out */
Michael J. Spencer 1:f5ac63519541 575 PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header failed\n"));
Michael J. Spencer 1:f5ac63519541 576 LINK_STATS_INC(link.lenerr);
Michael J. Spencer 1:f5ac63519541 577 goto drop;
Michael J. Spencer 1:f5ac63519541 578 }
Michael J. Spencer 1:f5ac63519541 579
Michael J. Spencer 1:f5ac63519541 580 pb = pppSingleBuf (pb);
Michael J. Spencer 1:f5ac63519541 581
Michael J. Spencer 1:f5ac63519541 582 if (pb->len <= PPPOE_HEADERLEN) {
Michael J. Spencer 1:f5ac63519541 583 printf("pppoe (data): dropping too short packet: %d bytes\n", pb->len);
Michael J. Spencer 1:f5ac63519541 584 goto drop;
Michael J. Spencer 1:f5ac63519541 585 }
Michael J. Spencer 1:f5ac63519541 586
Michael J. Spencer 1:f5ac63519541 587 if (pb->len < sizeof(*ph)) {
Michael J. Spencer 1:f5ac63519541 588 printf("pppoe_data_input: could not get PPPoE header\n");
Michael J. Spencer 1:f5ac63519541 589 goto drop;
Michael J. Spencer 1:f5ac63519541 590 }
Michael J. Spencer 1:f5ac63519541 591 ph = (struct pppoehdr *)pb->payload;
Michael J. Spencer 1:f5ac63519541 592
Michael J. Spencer 1:f5ac63519541 593 if (ph->vertype != PPPOE_VERTYPE) {
Michael J. Spencer 1:f5ac63519541 594 printf("pppoe (data): unknown version/type packet: 0x%x\n", ph->vertype);
Michael J. Spencer 1:f5ac63519541 595 goto drop;
Michael J. Spencer 1:f5ac63519541 596 }
Michael J. Spencer 1:f5ac63519541 597 if (ph->code != 0) {
Michael J. Spencer 1:f5ac63519541 598 goto drop;
Michael J. Spencer 1:f5ac63519541 599 }
Michael J. Spencer 1:f5ac63519541 600
Michael J. Spencer 1:f5ac63519541 601 session = ntohs(ph->session);
Michael J. Spencer 1:f5ac63519541 602 sc = pppoe_find_softc_by_session(session, netif);
Michael J. Spencer 1:f5ac63519541 603 if (sc == NULL) {
Michael J. Spencer 1:f5ac63519541 604 #ifdef PPPOE_TERM_UNKNOWN_SESSIONS
Michael J. Spencer 1:f5ac63519541 605 printf("pppoe: input for unknown session 0x%x, sending PADT\n", session);
Michael J. Spencer 1:f5ac63519541 606 pppoe_send_padt(netif, session, shost);
Michael J. Spencer 1:f5ac63519541 607 #endif
Michael J. Spencer 1:f5ac63519541 608 goto drop;
Michael J. Spencer 1:f5ac63519541 609 }
Michael J. Spencer 1:f5ac63519541 610
Michael J. Spencer 1:f5ac63519541 611 plen = ntohs(ph->plen);
Michael J. Spencer 1:f5ac63519541 612
Michael J. Spencer 1:f5ac63519541 613 if (pbuf_header(pb, -(int)(PPPOE_HEADERLEN)) != 0) {
Michael J. Spencer 1:f5ac63519541 614 /* bail out */
Michael J. Spencer 1:f5ac63519541 615 PPPDEBUG(LOG_ERR, ("pppoe_data_input: pbuf_header PPPOE_HEADERLEN failed\n"));
Michael J. Spencer 1:f5ac63519541 616 LINK_STATS_INC(link.lenerr);
Michael J. Spencer 1:f5ac63519541 617 goto drop;
Michael J. Spencer 1:f5ac63519541 618 }
Michael J. Spencer 1:f5ac63519541 619
Michael J. Spencer 1:f5ac63519541 620 PPPDEBUG(LOG_DEBUG, ("pppoe_data_input: %c%c%"U16_F": pkthdr.len=%d, pppoe.len=%d\n",
Michael J. Spencer 1:f5ac63519541 621 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num,
Michael J. Spencer 1:f5ac63519541 622 pb->len, plen));
Michael J. Spencer 1:f5ac63519541 623
Michael J. Spencer 1:f5ac63519541 624 if (pb->len < plen) {
Michael J. Spencer 1:f5ac63519541 625 goto drop;
Michael J. Spencer 1:f5ac63519541 626 }
Michael J. Spencer 1:f5ac63519541 627
Michael J. Spencer 1:f5ac63519541 628 pppInProcOverEthernet(sc->sc_pd, pb);
Michael J. Spencer 1:f5ac63519541 629
Michael J. Spencer 1:f5ac63519541 630 return;
Michael J. Spencer 1:f5ac63519541 631
Michael J. Spencer 1:f5ac63519541 632 drop:
Michael J. Spencer 1:f5ac63519541 633 pbuf_free(pb);
Michael J. Spencer 1:f5ac63519541 634 }
Michael J. Spencer 1:f5ac63519541 635
Michael J. Spencer 1:f5ac63519541 636 static err_t
Michael J. Spencer 1:f5ac63519541 637 pppoe_output(struct pppoe_softc *sc, struct pbuf *pb)
Michael J. Spencer 1:f5ac63519541 638 {
Michael J. Spencer 1:f5ac63519541 639 struct eth_hdr *ethhdr;
Michael J. Spencer 1:f5ac63519541 640 u16_t etype;
Michael J. Spencer 1:f5ac63519541 641 err_t res;
Michael J. Spencer 1:f5ac63519541 642
Michael J. Spencer 1:f5ac63519541 643 if (!sc->sc_ethif) {
Michael J. Spencer 1:f5ac63519541 644 pbuf_free(pb);
Michael J. Spencer 1:f5ac63519541 645 return ERR_IF;
Michael J. Spencer 1:f5ac63519541 646 }
Michael J. Spencer 1:f5ac63519541 647
Michael J. Spencer 1:f5ac63519541 648 ethhdr = (struct eth_hdr *)pb->payload;
Michael J. Spencer 1:f5ac63519541 649 etype = sc->sc_state == PPPOE_STATE_SESSION ? ETHTYPE_PPPOE : ETHTYPE_PPPOEDISC;
Michael J. Spencer 1:f5ac63519541 650 ethhdr->type = htons(etype);
Michael J. Spencer 1:f5ac63519541 651 MEMCPY(ethhdr->dest.addr, sc->sc_dest.addr, sizeof(ethhdr->dest.addr));
Michael J. Spencer 1:f5ac63519541 652 MEMCPY(ethhdr->src.addr, ((struct eth_addr *)sc->sc_ethif->hwaddr)->addr, sizeof(ethhdr->src.addr));
Michael J. Spencer 1:f5ac63519541 653
Michael J. Spencer 1:f5ac63519541 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",
Michael J. Spencer 1:f5ac63519541 655 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num, etype,
Michael J. Spencer 1:f5ac63519541 656 sc->sc_state, sc->sc_session,
Michael J. Spencer 1:f5ac63519541 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],
Michael J. Spencer 1:f5ac63519541 658 pb->tot_len));
Michael J. Spencer 1:f5ac63519541 659
Michael J. Spencer 1:f5ac63519541 660 res = sc->sc_ethif->linkoutput(sc->sc_ethif, pb);
Michael J. Spencer 1:f5ac63519541 661
Michael J. Spencer 1:f5ac63519541 662 pbuf_free(pb);
Michael J. Spencer 1:f5ac63519541 663
Michael J. Spencer 1:f5ac63519541 664 return res;
Michael J. Spencer 1:f5ac63519541 665 }
Michael J. Spencer 1:f5ac63519541 666
Michael J. Spencer 1:f5ac63519541 667 static err_t
Michael J. Spencer 1:f5ac63519541 668 pppoe_send_padi(struct pppoe_softc *sc)
Michael J. Spencer 1:f5ac63519541 669 {
Michael J. Spencer 1:f5ac63519541 670 struct pbuf *pb;
Michael J. Spencer 1:f5ac63519541 671 u8_t *p;
Michael J. Spencer 1:f5ac63519541 672 int len;
Michael J. Spencer 1:f5ac63519541 673 #ifdef PPPOE_TODO
Michael J. Spencer 1:f5ac63519541 674 int l1 = 0, l2 = 0; /* XXX: gcc */
Michael J. Spencer 1:f5ac63519541 675 #endif /* PPPOE_TODO */
Michael J. Spencer 1:f5ac63519541 676
Michael J. Spencer 1:f5ac63519541 677 if (sc->sc_state >PPPOE_STATE_PADI_SENT) {
Michael J. Spencer 1:f5ac63519541 678 PPPDEBUG(LOG_ERR, ("ERROR: pppoe_send_padi in state %d", sc->sc_state));
Michael J. Spencer 1:f5ac63519541 679 }
Michael J. Spencer 1:f5ac63519541 680
Michael J. Spencer 1:f5ac63519541 681 /* calculate length of frame (excluding ethernet header + pppoe header) */
Michael J. Spencer 1:f5ac63519541 682 len = 2 + 2 + 2 + 2 + sizeof sc; /* service name tag is required, host unique is send too */
Michael J. Spencer 1:f5ac63519541 683 #ifdef PPPOE_TODO
Michael J. Spencer 1:f5ac63519541 684 if (sc->sc_service_name != NULL) {
Michael J. Spencer 1:f5ac63519541 685 l1 = (int)strlen(sc->sc_service_name);
Michael J. Spencer 1:f5ac63519541 686 len += l1;
Michael J. Spencer 1:f5ac63519541 687 }
Michael J. Spencer 1:f5ac63519541 688 if (sc->sc_concentrator_name != NULL) {
Michael J. Spencer 1:f5ac63519541 689 l2 = (int)strlen(sc->sc_concentrator_name);
Michael J. Spencer 1:f5ac63519541 690 len += 2 + 2 + l2;
Michael J. Spencer 1:f5ac63519541 691 }
Michael J. Spencer 1:f5ac63519541 692 #endif /* PPPOE_TODO */
Michael J. Spencer 1:f5ac63519541 693 LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
Michael J. Spencer 1:f5ac63519541 694 sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
Michael J. Spencer 1:f5ac63519541 695
Michael J. Spencer 1:f5ac63519541 696 /* allocate a buffer */
Michael J. Spencer 1:f5ac63519541 697 pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
Michael J. Spencer 1:f5ac63519541 698 if (!pb) {
Michael J. Spencer 1:f5ac63519541 699 return ERR_MEM;
Michael J. Spencer 1:f5ac63519541 700 }
Michael J. Spencer 1:f5ac63519541 701 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
Michael J. Spencer 1:f5ac63519541 702
Michael J. Spencer 1:f5ac63519541 703 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
Michael J. Spencer 1:f5ac63519541 704 /* fill in pkt */
Michael J. Spencer 1:f5ac63519541 705 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADI, 0, (u16_t)len);
Michael J. Spencer 1:f5ac63519541 706 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
Michael J. Spencer 1:f5ac63519541 707 #ifdef PPPOE_TODO
Michael J. Spencer 1:f5ac63519541 708 if (sc->sc_service_name != NULL) {
Michael J. Spencer 1:f5ac63519541 709 PPPOE_ADD_16(p, l1);
Michael J. Spencer 1:f5ac63519541 710 MEMCPY(p, sc->sc_service_name, l1);
Michael J. Spencer 1:f5ac63519541 711 p += l1;
Michael J. Spencer 1:f5ac63519541 712 } else
Michael J. Spencer 1:f5ac63519541 713 #endif /* PPPOE_TODO */
Michael J. Spencer 1:f5ac63519541 714 {
Michael J. Spencer 1:f5ac63519541 715 PPPOE_ADD_16(p, 0);
Michael J. Spencer 1:f5ac63519541 716 }
Michael J. Spencer 1:f5ac63519541 717 #ifdef PPPOE_TODO
Michael J. Spencer 1:f5ac63519541 718 if (sc->sc_concentrator_name != NULL) {
Michael J. Spencer 1:f5ac63519541 719 PPPOE_ADD_16(p, PPPOE_TAG_ACNAME);
Michael J. Spencer 1:f5ac63519541 720 PPPOE_ADD_16(p, l2);
Michael J. Spencer 1:f5ac63519541 721 MEMCPY(p, sc->sc_concentrator_name, l2);
Michael J. Spencer 1:f5ac63519541 722 p += l2;
Michael J. Spencer 1:f5ac63519541 723 }
Michael J. Spencer 1:f5ac63519541 724 #endif /* PPPOE_TODO */
Michael J. Spencer 1:f5ac63519541 725 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
Michael J. Spencer 1:f5ac63519541 726 PPPOE_ADD_16(p, sizeof(sc));
Michael J. Spencer 1:f5ac63519541 727 MEMCPY(p, &sc, sizeof sc);
Michael J. Spencer 1:f5ac63519541 728
Michael J. Spencer 1:f5ac63519541 729 /* send pkt */
Michael J. Spencer 1:f5ac63519541 730 return pppoe_output(sc, pb);
Michael J. Spencer 1:f5ac63519541 731 }
Michael J. Spencer 1:f5ac63519541 732
Michael J. Spencer 1:f5ac63519541 733 static void
Michael J. Spencer 1:f5ac63519541 734 pppoe_timeout(void *arg)
Michael J. Spencer 1:f5ac63519541 735 {
Michael J. Spencer 1:f5ac63519541 736 int retry_wait, err;
Michael J. Spencer 1:f5ac63519541 737 struct pppoe_softc *sc = (struct pppoe_softc*)arg;
Michael J. Spencer 1:f5ac63519541 738
Michael J. Spencer 1:f5ac63519541 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));
Michael J. Spencer 1:f5ac63519541 740
Michael J. Spencer 1:f5ac63519541 741 switch (sc->sc_state) {
Michael J. Spencer 1:f5ac63519541 742 case PPPOE_STATE_PADI_SENT:
Michael J. Spencer 1:f5ac63519541 743 /*
Michael J. Spencer 1:f5ac63519541 744 * We have two basic ways of retrying:
Michael J. Spencer 1:f5ac63519541 745 * - Quick retry mode: try a few times in short sequence
Michael J. Spencer 1:f5ac63519541 746 * - Slow retry mode: we already had a connection successfully
Michael J. Spencer 1:f5ac63519541 747 * established and will try infinitely (without user
Michael J. Spencer 1:f5ac63519541 748 * intervention)
Michael J. Spencer 1:f5ac63519541 749 * We only enter slow retry mode if IFF_LINK1 (aka autodial)
Michael J. Spencer 1:f5ac63519541 750 * is not set.
Michael J. Spencer 1:f5ac63519541 751 */
Michael J. Spencer 1:f5ac63519541 752
Michael J. Spencer 1:f5ac63519541 753 /* initialize for quick retry mode */
Michael J. Spencer 1:f5ac63519541 754 retry_wait = PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried);
Michael J. Spencer 1:f5ac63519541 755
Michael J. Spencer 1:f5ac63519541 756 sc->sc_padi_retried++;
Michael J. Spencer 1:f5ac63519541 757 if (sc->sc_padi_retried >= PPPOE_DISC_MAXPADI) {
Michael J. Spencer 1:f5ac63519541 758 #if 0
Michael J. Spencer 1:f5ac63519541 759 if ((sc->sc_sppp.pp_if.if_flags & IFF_LINK1) == 0) {
Michael J. Spencer 1:f5ac63519541 760 /* slow retry mode */
Michael J. Spencer 1:f5ac63519541 761 retry_wait = PPPOE_SLOW_RETRY;
Michael J. Spencer 1:f5ac63519541 762 } else
Michael J. Spencer 1:f5ac63519541 763 #endif
Michael J. Spencer 1:f5ac63519541 764 {
Michael J. Spencer 1:f5ac63519541 765 pppoe_abort_connect(sc);
Michael J. Spencer 1:f5ac63519541 766 return;
Michael J. Spencer 1:f5ac63519541 767 }
Michael J. Spencer 1:f5ac63519541 768 }
Michael J. Spencer 1:f5ac63519541 769 if ((err = pppoe_send_padi(sc)) != 0) {
Michael J. Spencer 1:f5ac63519541 770 sc->sc_padi_retried--;
Michael J. Spencer 1:f5ac63519541 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));
Michael J. Spencer 1:f5ac63519541 772 }
Michael J. Spencer 1:f5ac63519541 773 sys_timeout(retry_wait, pppoe_timeout, sc);
Michael J. Spencer 1:f5ac63519541 774 break;
Michael J. Spencer 1:f5ac63519541 775
Michael J. Spencer 1:f5ac63519541 776 case PPPOE_STATE_PADR_SENT:
Michael J. Spencer 1:f5ac63519541 777 sc->sc_padr_retried++;
Michael J. Spencer 1:f5ac63519541 778 if (sc->sc_padr_retried >= PPPOE_DISC_MAXPADR) {
Michael J. Spencer 1:f5ac63519541 779 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
Michael J. Spencer 1:f5ac63519541 780 sc->sc_state = PPPOE_STATE_PADI_SENT;
Michael J. Spencer 1:f5ac63519541 781 sc->sc_padr_retried = 0;
Michael J. Spencer 1:f5ac63519541 782 if ((err = pppoe_send_padi(sc)) != 0) {
Michael J. Spencer 1:f5ac63519541 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));
Michael J. Spencer 1:f5ac63519541 784 }
Michael J. Spencer 1:f5ac63519541 785 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried), pppoe_timeout, sc);
Michael J. Spencer 1:f5ac63519541 786 return;
Michael J. Spencer 1:f5ac63519541 787 }
Michael J. Spencer 1:f5ac63519541 788 if ((err = pppoe_send_padr(sc)) != 0) {
Michael J. Spencer 1:f5ac63519541 789 sc->sc_padr_retried--;
Michael J. Spencer 1:f5ac63519541 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));
Michael J. Spencer 1:f5ac63519541 791 }
Michael J. Spencer 1:f5ac63519541 792 sys_timeout(PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried), pppoe_timeout, sc);
Michael J. Spencer 1:f5ac63519541 793 break;
Michael J. Spencer 1:f5ac63519541 794 case PPPOE_STATE_CLOSING:
Michael J. Spencer 1:f5ac63519541 795 pppoe_do_disconnect(sc);
Michael J. Spencer 1:f5ac63519541 796 break;
Michael J. Spencer 1:f5ac63519541 797 default:
Michael J. Spencer 1:f5ac63519541 798 return; /* all done, work in peace */
Michael J. Spencer 1:f5ac63519541 799 }
Michael J. Spencer 1:f5ac63519541 800 }
Michael J. Spencer 1:f5ac63519541 801
Michael J. Spencer 1:f5ac63519541 802 /* Start a connection (i.e. initiate discovery phase) */
Michael J. Spencer 1:f5ac63519541 803 int
Michael J. Spencer 1:f5ac63519541 804 pppoe_connect(struct pppoe_softc *sc)
Michael J. Spencer 1:f5ac63519541 805 {
Michael J. Spencer 1:f5ac63519541 806 int err;
Michael J. Spencer 1:f5ac63519541 807
Michael J. Spencer 1:f5ac63519541 808 if (sc->sc_state != PPPOE_STATE_INITIAL) {
Michael J. Spencer 1:f5ac63519541 809 return EBUSY;
Michael J. Spencer 1:f5ac63519541 810 }
Michael J. Spencer 1:f5ac63519541 811
Michael J. Spencer 1:f5ac63519541 812 #ifdef PPPOE_SERVER
Michael J. Spencer 1:f5ac63519541 813 /* wait PADI if IFF_PASSIVE */
Michael J. Spencer 1:f5ac63519541 814 if ((sc->sc_sppp.pp_if.if_flags & IFF_PASSIVE)) {
Michael J. Spencer 1:f5ac63519541 815 return 0;
Michael J. Spencer 1:f5ac63519541 816 }
Michael J. Spencer 1:f5ac63519541 817 #endif
Michael J. Spencer 1:f5ac63519541 818 /* save state, in case we fail to send PADI */
Michael J. Spencer 1:f5ac63519541 819 sc->sc_state = PPPOE_STATE_PADI_SENT;
Michael J. Spencer 1:f5ac63519541 820 sc->sc_padr_retried = 0;
Michael J. Spencer 1:f5ac63519541 821 err = pppoe_send_padi(sc);
Michael J. Spencer 1:f5ac63519541 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));
Michael J. Spencer 1:f5ac63519541 823 sys_timeout(PPPOE_DISC_TIMEOUT, pppoe_timeout, sc);
Michael J. Spencer 1:f5ac63519541 824 return err;
Michael J. Spencer 1:f5ac63519541 825 }
Michael J. Spencer 1:f5ac63519541 826
Michael J. Spencer 1:f5ac63519541 827 /* disconnect */
Michael J. Spencer 1:f5ac63519541 828 void
Michael J. Spencer 1:f5ac63519541 829 pppoe_disconnect(struct pppoe_softc *sc)
Michael J. Spencer 1:f5ac63519541 830 {
Michael J. Spencer 1:f5ac63519541 831 if (sc->sc_state < PPPOE_STATE_SESSION) {
Michael J. Spencer 1:f5ac63519541 832 return;
Michael J. Spencer 1:f5ac63519541 833 }
Michael J. Spencer 1:f5ac63519541 834 /*
Michael J. Spencer 1:f5ac63519541 835 * Do not call pppoe_disconnect here, the upper layer state
Michael J. Spencer 1:f5ac63519541 836 * machine gets confused by this. We must return from this
Michael J. Spencer 1:f5ac63519541 837 * function and defer disconnecting to the timeout handler.
Michael J. Spencer 1:f5ac63519541 838 */
Michael J. Spencer 1:f5ac63519541 839 sc->sc_state = PPPOE_STATE_CLOSING;
Michael J. Spencer 1:f5ac63519541 840 sys_timeout(20, pppoe_timeout, sc);
Michael J. Spencer 1:f5ac63519541 841 }
Michael J. Spencer 1:f5ac63519541 842
Michael J. Spencer 1:f5ac63519541 843 static int
Michael J. Spencer 1:f5ac63519541 844 pppoe_do_disconnect(struct pppoe_softc *sc)
Michael J. Spencer 1:f5ac63519541 845 {
Michael J. Spencer 1:f5ac63519541 846 int err;
Michael J. Spencer 1:f5ac63519541 847
Michael J. Spencer 1:f5ac63519541 848 if (sc->sc_state < PPPOE_STATE_SESSION) {
Michael J. Spencer 1:f5ac63519541 849 err = EBUSY;
Michael J. Spencer 1:f5ac63519541 850 } else {
Michael J. Spencer 1:f5ac63519541 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));
Michael J. Spencer 1:f5ac63519541 852 err = pppoe_send_padt(sc->sc_ethif, sc->sc_session, (const u8_t *)&sc->sc_dest);
Michael J. Spencer 1:f5ac63519541 853 }
Michael J. Spencer 1:f5ac63519541 854
Michael J. Spencer 1:f5ac63519541 855 /* cleanup softc */
Michael J. Spencer 1:f5ac63519541 856 sc->sc_state = PPPOE_STATE_INITIAL;
Michael J. Spencer 1:f5ac63519541 857 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
Michael J. Spencer 1:f5ac63519541 858 sc->sc_ac_cookie_len = 0;
Michael J. Spencer 1:f5ac63519541 859 #ifdef PPPOE_SERVER
Michael J. Spencer 1:f5ac63519541 860 if (sc->sc_hunique) {
Michael J. Spencer 1:f5ac63519541 861 mem_free(sc->sc_hunique);
Michael J. Spencer 1:f5ac63519541 862 sc->sc_hunique = NULL;
Michael J. Spencer 1:f5ac63519541 863 }
Michael J. Spencer 1:f5ac63519541 864 sc->sc_hunique_len = 0;
Michael J. Spencer 1:f5ac63519541 865 #endif
Michael J. Spencer 1:f5ac63519541 866 sc->sc_session = 0;
Michael J. Spencer 1:f5ac63519541 867
Michael J. Spencer 1:f5ac63519541 868 sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
Michael J. Spencer 1:f5ac63519541 869
Michael J. Spencer 1:f5ac63519541 870 return err;
Michael J. Spencer 1:f5ac63519541 871 }
Michael J. Spencer 1:f5ac63519541 872
Michael J. Spencer 1:f5ac63519541 873 /* Connection attempt aborted */
Michael J. Spencer 1:f5ac63519541 874 static void
Michael J. Spencer 1:f5ac63519541 875 pppoe_abort_connect(struct pppoe_softc *sc)
Michael J. Spencer 1:f5ac63519541 876 {
Michael J. Spencer 1:f5ac63519541 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);
Michael J. Spencer 1:f5ac63519541 878 sc->sc_state = PPPOE_STATE_CLOSING;
Michael J. Spencer 1:f5ac63519541 879
Michael J. Spencer 1:f5ac63519541 880 sc->sc_linkStatusCB(sc->sc_pd, 0); /* notify upper layers */
Michael J. Spencer 1:f5ac63519541 881
Michael J. Spencer 1:f5ac63519541 882 /* clear connection state */
Michael J. Spencer 1:f5ac63519541 883 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
Michael J. Spencer 1:f5ac63519541 884 sc->sc_state = PPPOE_STATE_INITIAL;
Michael J. Spencer 1:f5ac63519541 885 }
Michael J. Spencer 1:f5ac63519541 886
Michael J. Spencer 1:f5ac63519541 887 /* Send a PADR packet */
Michael J. Spencer 1:f5ac63519541 888 static err_t
Michael J. Spencer 1:f5ac63519541 889 pppoe_send_padr(struct pppoe_softc *sc)
Michael J. Spencer 1:f5ac63519541 890 {
Michael J. Spencer 1:f5ac63519541 891 struct pbuf *pb;
Michael J. Spencer 1:f5ac63519541 892 u8_t *p;
Michael J. Spencer 1:f5ac63519541 893 size_t len;
Michael J. Spencer 1:f5ac63519541 894 #ifdef PPPOE_TODO
Michael J. Spencer 1:f5ac63519541 895 size_t l1 = 0; /* XXX: gcc */
Michael J. Spencer 1:f5ac63519541 896 #endif /* PPPOE_TODO */
Michael J. Spencer 1:f5ac63519541 897
Michael J. Spencer 1:f5ac63519541 898 if (sc->sc_state != PPPOE_STATE_PADR_SENT) {
Michael J. Spencer 1:f5ac63519541 899 return ERR_CONN;
Michael J. Spencer 1:f5ac63519541 900 }
Michael J. Spencer 1:f5ac63519541 901
Michael J. Spencer 1:f5ac63519541 902 len = 2 + 2 + 2 + 2 + sizeof(sc); /* service name, host unique */
Michael J. Spencer 1:f5ac63519541 903 #ifdef PPPOE_TODO
Michael J. Spencer 1:f5ac63519541 904 if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
Michael J. Spencer 1:f5ac63519541 905 l1 = strlen(sc->sc_service_name);
Michael J. Spencer 1:f5ac63519541 906 len += l1;
Michael J. Spencer 1:f5ac63519541 907 }
Michael J. Spencer 1:f5ac63519541 908 #endif /* PPPOE_TODO */
Michael J. Spencer 1:f5ac63519541 909 if (sc->sc_ac_cookie_len > 0) {
Michael J. Spencer 1:f5ac63519541 910 len += 2 + 2 + sc->sc_ac_cookie_len; /* AC cookie */
Michael J. Spencer 1:f5ac63519541 911 }
Michael J. Spencer 1:f5ac63519541 912 LWIP_ASSERT("sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff",
Michael J. Spencer 1:f5ac63519541 913 sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len <= 0xffff);
Michael J. Spencer 1:f5ac63519541 914 pb = pbuf_alloc(PBUF_LINK, (u16_t)(sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len), PBUF_RAM);
Michael J. Spencer 1:f5ac63519541 915 if (!pb) {
Michael J. Spencer 1:f5ac63519541 916 return ERR_MEM;
Michael J. Spencer 1:f5ac63519541 917 }
Michael J. Spencer 1:f5ac63519541 918 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
Michael J. Spencer 1:f5ac63519541 919 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
Michael J. Spencer 1:f5ac63519541 920 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADR, 0, len);
Michael J. Spencer 1:f5ac63519541 921 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
Michael J. Spencer 1:f5ac63519541 922 #ifdef PPPOE_TODO
Michael J. Spencer 1:f5ac63519541 923 if (sc->sc_service_name != NULL) {
Michael J. Spencer 1:f5ac63519541 924 PPPOE_ADD_16(p, l1);
Michael J. Spencer 1:f5ac63519541 925 MEMCPY(p, sc->sc_service_name, l1);
Michael J. Spencer 1:f5ac63519541 926 p += l1;
Michael J. Spencer 1:f5ac63519541 927 } else
Michael J. Spencer 1:f5ac63519541 928 #endif /* PPPOE_TODO */
Michael J. Spencer 1:f5ac63519541 929 {
Michael J. Spencer 1:f5ac63519541 930 PPPOE_ADD_16(p, 0);
Michael J. Spencer 1:f5ac63519541 931 }
Michael J. Spencer 1:f5ac63519541 932 if (sc->sc_ac_cookie_len > 0) {
Michael J. Spencer 1:f5ac63519541 933 PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
Michael J. Spencer 1:f5ac63519541 934 PPPOE_ADD_16(p, sc->sc_ac_cookie_len);
Michael J. Spencer 1:f5ac63519541 935 MEMCPY(p, sc->sc_ac_cookie, sc->sc_ac_cookie_len);
Michael J. Spencer 1:f5ac63519541 936 p += sc->sc_ac_cookie_len;
Michael J. Spencer 1:f5ac63519541 937 }
Michael J. Spencer 1:f5ac63519541 938 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
Michael J. Spencer 1:f5ac63519541 939 PPPOE_ADD_16(p, sizeof(sc));
Michael J. Spencer 1:f5ac63519541 940 MEMCPY(p, &sc, sizeof sc);
Michael J. Spencer 1:f5ac63519541 941
Michael J. Spencer 1:f5ac63519541 942 return pppoe_output(sc, pb);
Michael J. Spencer 1:f5ac63519541 943 }
Michael J. Spencer 1:f5ac63519541 944
Michael J. Spencer 1:f5ac63519541 945 /* send a PADT packet */
Michael J. Spencer 1:f5ac63519541 946 static err_t
Michael J. Spencer 1:f5ac63519541 947 pppoe_send_padt(struct netif *outgoing_if, u_int session, const u8_t *dest)
Michael J. Spencer 1:f5ac63519541 948 {
Michael J. Spencer 1:f5ac63519541 949 struct pbuf *pb;
Michael J. Spencer 1:f5ac63519541 950 struct eth_hdr *ethhdr;
Michael J. Spencer 1:f5ac63519541 951 err_t res;
Michael J. Spencer 1:f5ac63519541 952 u8_t *p;
Michael J. Spencer 1:f5ac63519541 953
Michael J. Spencer 1:f5ac63519541 954 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN, PBUF_RAM);
Michael J. Spencer 1:f5ac63519541 955 if (!pb) {
Michael J. Spencer 1:f5ac63519541 956 return ERR_MEM;
Michael J. Spencer 1:f5ac63519541 957 }
Michael J. Spencer 1:f5ac63519541 958 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
Michael J. Spencer 1:f5ac63519541 959
Michael J. Spencer 1:f5ac63519541 960 ethhdr = (struct eth_hdr *)pb->payload;
Michael J. Spencer 1:f5ac63519541 961 ethhdr->type = PP_HTONS(ETHTYPE_PPPOEDISC);
Michael J. Spencer 1:f5ac63519541 962 MEMCPY(ethhdr->dest.addr, dest, sizeof(ethhdr->dest.addr));
Michael J. Spencer 1:f5ac63519541 963 MEMCPY(ethhdr->src.addr, ((struct eth_addr *)outgoing_if->hwaddr)->addr, sizeof(ethhdr->src.addr));
Michael J. Spencer 1:f5ac63519541 964
Michael J. Spencer 1:f5ac63519541 965 p = (u8_t*)(ethhdr + 1);
Michael J. Spencer 1:f5ac63519541 966 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADT, session, 0);
Michael J. Spencer 1:f5ac63519541 967
Michael J. Spencer 1:f5ac63519541 968 res = outgoing_if->linkoutput(outgoing_if, pb);
Michael J. Spencer 1:f5ac63519541 969
Michael J. Spencer 1:f5ac63519541 970 pbuf_free(pb);
Michael J. Spencer 1:f5ac63519541 971
Michael J. Spencer 1:f5ac63519541 972 return res;
Michael J. Spencer 1:f5ac63519541 973 }
Michael J. Spencer 1:f5ac63519541 974
Michael J. Spencer 1:f5ac63519541 975 #ifdef PPPOE_SERVER
Michael J. Spencer 1:f5ac63519541 976 static err_t
Michael J. Spencer 1:f5ac63519541 977 pppoe_send_pado(struct pppoe_softc *sc)
Michael J. Spencer 1:f5ac63519541 978 {
Michael J. Spencer 1:f5ac63519541 979 struct pbuf *pb;
Michael J. Spencer 1:f5ac63519541 980 u8_t *p;
Michael J. Spencer 1:f5ac63519541 981 size_t len;
Michael J. Spencer 1:f5ac63519541 982
Michael J. Spencer 1:f5ac63519541 983 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
Michael J. Spencer 1:f5ac63519541 984 return ERR_CONN;
Michael J. Spencer 1:f5ac63519541 985 }
Michael J. Spencer 1:f5ac63519541 986
Michael J. Spencer 1:f5ac63519541 987 /* calc length */
Michael J. Spencer 1:f5ac63519541 988 len = 0;
Michael J. Spencer 1:f5ac63519541 989 /* include ac_cookie */
Michael J. Spencer 1:f5ac63519541 990 len += 2 + 2 + sizeof(sc);
Michael J. Spencer 1:f5ac63519541 991 /* include hunique */
Michael J. Spencer 1:f5ac63519541 992 len += 2 + 2 + sc->sc_hunique_len;
Michael J. Spencer 1:f5ac63519541 993 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
Michael J. Spencer 1:f5ac63519541 994 if (!pb) {
Michael J. Spencer 1:f5ac63519541 995 return ERR_MEM;
Michael J. Spencer 1:f5ac63519541 996 }
Michael J. Spencer 1:f5ac63519541 997 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
Michael J. Spencer 1:f5ac63519541 998 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
Michael J. Spencer 1:f5ac63519541 999 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADO, 0, len);
Michael J. Spencer 1:f5ac63519541 1000 PPPOE_ADD_16(p, PPPOE_TAG_ACCOOKIE);
Michael J. Spencer 1:f5ac63519541 1001 PPPOE_ADD_16(p, sizeof(sc));
Michael J. Spencer 1:f5ac63519541 1002 MEMCPY(p, &sc, sizeof(sc));
Michael J. Spencer 1:f5ac63519541 1003 p += sizeof(sc);
Michael J. Spencer 1:f5ac63519541 1004 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
Michael J. Spencer 1:f5ac63519541 1005 PPPOE_ADD_16(p, sc->sc_hunique_len);
Michael J. Spencer 1:f5ac63519541 1006 MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
Michael J. Spencer 1:f5ac63519541 1007 return pppoe_output(sc, pb);
Michael J. Spencer 1:f5ac63519541 1008 }
Michael J. Spencer 1:f5ac63519541 1009
Michael J. Spencer 1:f5ac63519541 1010 static err_t
Michael J. Spencer 1:f5ac63519541 1011 pppoe_send_pads(struct pppoe_softc *sc)
Michael J. Spencer 1:f5ac63519541 1012 {
Michael J. Spencer 1:f5ac63519541 1013 struct pbuf *pb;
Michael J. Spencer 1:f5ac63519541 1014 u8_t *p;
Michael J. Spencer 1:f5ac63519541 1015 size_t len, l1 = 0; /* XXX: gcc */
Michael J. Spencer 1:f5ac63519541 1016
Michael J. Spencer 1:f5ac63519541 1017 if (sc->sc_state != PPPOE_STATE_PADO_SENT) {
Michael J. Spencer 1:f5ac63519541 1018 return ERR_CONN;
Michael J. Spencer 1:f5ac63519541 1019 }
Michael J. Spencer 1:f5ac63519541 1020
Michael J. Spencer 1:f5ac63519541 1021 sc->sc_session = mono_time.tv_sec % 0xff + 1;
Michael J. Spencer 1:f5ac63519541 1022 /* calc length */
Michael J. Spencer 1:f5ac63519541 1023 len = 0;
Michael J. Spencer 1:f5ac63519541 1024 /* include hunique */
Michael J. Spencer 1:f5ac63519541 1025 len += 2 + 2 + 2 + 2 + sc->sc_hunique_len; /* service name, host unique*/
Michael J. Spencer 1:f5ac63519541 1026 if (sc->sc_service_name != NULL) { /* service name tag maybe empty */
Michael J. Spencer 1:f5ac63519541 1027 l1 = strlen(sc->sc_service_name);
Michael J. Spencer 1:f5ac63519541 1028 len += l1;
Michael J. Spencer 1:f5ac63519541 1029 }
Michael J. Spencer 1:f5ac63519541 1030 pb = pbuf_alloc(PBUF_LINK, sizeof(struct eth_hdr) + PPPOE_HEADERLEN + len, PBUF_RAM);
Michael J. Spencer 1:f5ac63519541 1031 if (!pb) {
Michael J. Spencer 1:f5ac63519541 1032 return ERR_MEM;
Michael J. Spencer 1:f5ac63519541 1033 }
Michael J. Spencer 1:f5ac63519541 1034 LWIP_ASSERT("pb->tot_len == pb->len", pb->tot_len == pb->len);
Michael J. Spencer 1:f5ac63519541 1035 p = (u8_t*)pb->payload + sizeof (struct eth_hdr);
Michael J. Spencer 1:f5ac63519541 1036 PPPOE_ADD_HEADER(p, PPPOE_CODE_PADS, sc->sc_session, len);
Michael J. Spencer 1:f5ac63519541 1037 PPPOE_ADD_16(p, PPPOE_TAG_SNAME);
Michael J. Spencer 1:f5ac63519541 1038 if (sc->sc_service_name != NULL) {
Michael J. Spencer 1:f5ac63519541 1039 PPPOE_ADD_16(p, l1);
Michael J. Spencer 1:f5ac63519541 1040 MEMCPY(p, sc->sc_service_name, l1);
Michael J. Spencer 1:f5ac63519541 1041 p += l1;
Michael J. Spencer 1:f5ac63519541 1042 } else {
Michael J. Spencer 1:f5ac63519541 1043 PPPOE_ADD_16(p, 0);
Michael J. Spencer 1:f5ac63519541 1044 }
Michael J. Spencer 1:f5ac63519541 1045 PPPOE_ADD_16(p, PPPOE_TAG_HUNIQUE);
Michael J. Spencer 1:f5ac63519541 1046 PPPOE_ADD_16(p, sc->sc_hunique_len);
Michael J. Spencer 1:f5ac63519541 1047 MEMCPY(p, sc->sc_hunique, sc->sc_hunique_len);
Michael J. Spencer 1:f5ac63519541 1048 return pppoe_output(sc, pb);
Michael J. Spencer 1:f5ac63519541 1049 }
Michael J. Spencer 1:f5ac63519541 1050 #endif
Michael J. Spencer 1:f5ac63519541 1051
Michael J. Spencer 1:f5ac63519541 1052 err_t
Michael J. Spencer 1:f5ac63519541 1053 pppoe_xmit(struct pppoe_softc *sc, struct pbuf *pb)
Michael J. Spencer 1:f5ac63519541 1054 {
Michael J. Spencer 1:f5ac63519541 1055 u8_t *p;
Michael J. Spencer 1:f5ac63519541 1056 size_t len;
Michael J. Spencer 1:f5ac63519541 1057
Michael J. Spencer 1:f5ac63519541 1058 /* are we ready to process data yet? */
Michael J. Spencer 1:f5ac63519541 1059 if (sc->sc_state < PPPOE_STATE_SESSION) {
Michael J. Spencer 1:f5ac63519541 1060 /*sppp_flush(&sc->sc_sppp.pp_if);*/
Michael J. Spencer 1:f5ac63519541 1061 pbuf_free(pb);
Michael J. Spencer 1:f5ac63519541 1062 return ERR_CONN;
Michael J. Spencer 1:f5ac63519541 1063 }
Michael J. Spencer 1:f5ac63519541 1064
Michael J. Spencer 1:f5ac63519541 1065 len = pb->tot_len;
Michael J. Spencer 1:f5ac63519541 1066
Michael J. Spencer 1:f5ac63519541 1067 /* make room for Ethernet header - should not fail */
Michael J. Spencer 1:f5ac63519541 1068 if (pbuf_header(pb, sizeof(struct eth_hdr) + PPPOE_HEADERLEN) != 0) {
Michael J. Spencer 1:f5ac63519541 1069 /* bail out */
Michael J. Spencer 1:f5ac63519541 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));
Michael J. Spencer 1:f5ac63519541 1071 LINK_STATS_INC(link.lenerr);
Michael J. Spencer 1:f5ac63519541 1072 pbuf_free(pb);
Michael J. Spencer 1:f5ac63519541 1073 return ERR_BUF;
Michael J. Spencer 1:f5ac63519541 1074 }
Michael J. Spencer 1:f5ac63519541 1075
Michael J. Spencer 1:f5ac63519541 1076 p = (u8_t*)pb->payload + sizeof(struct eth_hdr);
Michael J. Spencer 1:f5ac63519541 1077 PPPOE_ADD_HEADER(p, 0, sc->sc_session, len);
Michael J. Spencer 1:f5ac63519541 1078
Michael J. Spencer 1:f5ac63519541 1079 return pppoe_output(sc, pb);
Michael J. Spencer 1:f5ac63519541 1080 }
Michael J. Spencer 1:f5ac63519541 1081
Michael J. Spencer 1:f5ac63519541 1082 #if 0 /*def PFIL_HOOKS*/
Michael J. Spencer 1:f5ac63519541 1083 static int
Michael J. Spencer 1:f5ac63519541 1084 pppoe_ifattach_hook(void *arg, struct pbuf **mp, struct netif *ifp, int dir)
Michael J. Spencer 1:f5ac63519541 1085 {
Michael J. Spencer 1:f5ac63519541 1086 struct pppoe_softc *sc;
Michael J. Spencer 1:f5ac63519541 1087 int s;
Michael J. Spencer 1:f5ac63519541 1088
Michael J. Spencer 1:f5ac63519541 1089 if (mp != (struct pbuf **)PFIL_IFNET_DETACH) {
Michael J. Spencer 1:f5ac63519541 1090 return 0;
Michael J. Spencer 1:f5ac63519541 1091 }
Michael J. Spencer 1:f5ac63519541 1092
Michael J. Spencer 1:f5ac63519541 1093 LIST_FOREACH(sc, &pppoe_softc_list, sc_list) {
Michael J. Spencer 1:f5ac63519541 1094 if (sc->sc_ethif != ifp) {
Michael J. Spencer 1:f5ac63519541 1095 continue;
Michael J. Spencer 1:f5ac63519541 1096 }
Michael J. Spencer 1:f5ac63519541 1097 if (sc->sc_sppp.pp_if.if_flags & IFF_UP) {
Michael J. Spencer 1:f5ac63519541 1098 sc->sc_sppp.pp_if.if_flags &= ~(IFF_UP|IFF_RUNNING);
Michael J. Spencer 1:f5ac63519541 1099 printf("%c%c%"U16_F": ethernet interface detached, going down\n",
Michael J. Spencer 1:f5ac63519541 1100 sc->sc_ethif->name[0], sc->sc_ethif->name[1], sc->sc_ethif->num);
Michael J. Spencer 1:f5ac63519541 1101 }
Michael J. Spencer 1:f5ac63519541 1102 sc->sc_ethif = NULL;
Michael J. Spencer 1:f5ac63519541 1103 pppoe_clear_softc(sc, "ethernet interface detached");
Michael J. Spencer 1:f5ac63519541 1104 }
Michael J. Spencer 1:f5ac63519541 1105
Michael J. Spencer 1:f5ac63519541 1106 return 0;
Michael J. Spencer 1:f5ac63519541 1107 }
Michael J. Spencer 1:f5ac63519541 1108 #endif
Michael J. Spencer 1:f5ac63519541 1109
Michael J. Spencer 1:f5ac63519541 1110 static void
Michael J. Spencer 1:f5ac63519541 1111 pppoe_clear_softc(struct pppoe_softc *sc, const char *message)
Michael J. Spencer 1:f5ac63519541 1112 {
Michael J. Spencer 1:f5ac63519541 1113 LWIP_UNUSED_ARG(message);
Michael J. Spencer 1:f5ac63519541 1114
Michael J. Spencer 1:f5ac63519541 1115 /* stop timer */
Michael J. Spencer 1:f5ac63519541 1116 sys_untimeout(pppoe_timeout, sc);
Michael J. Spencer 1:f5ac63519541 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));
Michael J. Spencer 1:f5ac63519541 1118
Michael J. Spencer 1:f5ac63519541 1119 /* fix our state */
Michael J. Spencer 1:f5ac63519541 1120 sc->sc_state = PPPOE_STATE_INITIAL;
Michael J. Spencer 1:f5ac63519541 1121
Michael J. Spencer 1:f5ac63519541 1122 /* notify upper layers */
Michael J. Spencer 1:f5ac63519541 1123 sc->sc_linkStatusCB(sc->sc_pd, 0);
Michael J. Spencer 1:f5ac63519541 1124
Michael J. Spencer 1:f5ac63519541 1125 /* clean up softc */
Michael J. Spencer 1:f5ac63519541 1126 MEMCPY(&sc->sc_dest, ethbroadcast.addr, sizeof(sc->sc_dest));
Michael J. Spencer 1:f5ac63519541 1127 sc->sc_ac_cookie_len = 0;
Michael J. Spencer 1:f5ac63519541 1128 sc->sc_session = 0;
Michael J. Spencer 1:f5ac63519541 1129 }
Michael J. Spencer 1:f5ac63519541 1130
Michael J. Spencer 1:f5ac63519541 1131 #endif /* PPPOE_SUPPORT */
Michael J. Spencer 1:f5ac63519541 1132