Rik Van Dyck / Mbed 2 deprecated Project_Embedded_C

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Dependencies:   mbed DS1307 Servo TextLCD

NetServices/lwip/netif/ppp/fsm.c@0:e1edd52b1ee2, 2014-12-04 (annotated)

Committer:
rikvandyck
Date:
Thu Dec 04 10:44:07 2014 +0000
Revision:
0:e1edd52b1ee2
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rikvandyck 0:e1edd52b1ee2 1 /*****************************************************************************
rikvandyck 0:e1edd52b1ee2 2 * fsm.c - Network Control Protocol Finite State Machine program file.
rikvandyck 0:e1edd52b1ee2 3 *
rikvandyck 0:e1edd52b1ee2 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
rikvandyck 0:e1edd52b1ee2 5 * portions Copyright (c) 1997 by Global Election Systems Inc.
rikvandyck 0:e1edd52b1ee2 6 *
rikvandyck 0:e1edd52b1ee2 7 * The authors hereby grant permission to use, copy, modify, distribute,
rikvandyck 0:e1edd52b1ee2 8 * and license this software and its documentation for any purpose, provided
rikvandyck 0:e1edd52b1ee2 9 * that existing copyright notices are retained in all copies and that this
rikvandyck 0:e1edd52b1ee2 10 * notice and the following disclaimer are included verbatim in any
rikvandyck 0:e1edd52b1ee2 11 * distributions. No written agreement, license, or royalty fee is required
rikvandyck 0:e1edd52b1ee2 12 * for any of the authorized uses.
rikvandyck 0:e1edd52b1ee2 13 *
rikvandyck 0:e1edd52b1ee2 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
rikvandyck 0:e1edd52b1ee2 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
rikvandyck 0:e1edd52b1ee2 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
rikvandyck 0:e1edd52b1ee2 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
rikvandyck 0:e1edd52b1ee2 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
rikvandyck 0:e1edd52b1ee2 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
rikvandyck 0:e1edd52b1ee2 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
rikvandyck 0:e1edd52b1ee2 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
rikvandyck 0:e1edd52b1ee2 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
rikvandyck 0:e1edd52b1ee2 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
rikvandyck 0:e1edd52b1ee2 24 *
rikvandyck 0:e1edd52b1ee2 25 ******************************************************************************
rikvandyck 0:e1edd52b1ee2 26 * REVISION HISTORY
rikvandyck 0:e1edd52b1ee2 27 *
rikvandyck 0:e1edd52b1ee2 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
rikvandyck 0:e1edd52b1ee2 29 * Ported to lwIP.
rikvandyck 0:e1edd52b1ee2 30 * 97-12-01 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
rikvandyck 0:e1edd52b1ee2 31 * Original based on BSD fsm.c.
rikvandyck 0:e1edd52b1ee2 32 *****************************************************************************/
rikvandyck 0:e1edd52b1ee2 33 /*
rikvandyck 0:e1edd52b1ee2 34 * fsm.c - {Link, IP} Control Protocol Finite State Machine.
rikvandyck 0:e1edd52b1ee2 35 *
rikvandyck 0:e1edd52b1ee2 36 * Copyright (c) 1989 Carnegie Mellon University.
rikvandyck 0:e1edd52b1ee2 37 * All rights reserved.
rikvandyck 0:e1edd52b1ee2 38 *
rikvandyck 0:e1edd52b1ee2 39 * Redistribution and use in source and binary forms are permitted
rikvandyck 0:e1edd52b1ee2 40 * provided that the above copyright notice and this paragraph are
rikvandyck 0:e1edd52b1ee2 41 * duplicated in all such forms and that any documentation,
rikvandyck 0:e1edd52b1ee2 42 * advertising materials, and other materials related to such
rikvandyck 0:e1edd52b1ee2 43 * distribution and use acknowledge that the software was developed
rikvandyck 0:e1edd52b1ee2 44 * by Carnegie Mellon University. The name of the
rikvandyck 0:e1edd52b1ee2 45 * University may not be used to endorse or promote products derived
rikvandyck 0:e1edd52b1ee2 46 * from this software without specific prior written permission.
rikvandyck 0:e1edd52b1ee2 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
rikvandyck 0:e1edd52b1ee2 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
rikvandyck 0:e1edd52b1ee2 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
rikvandyck 0:e1edd52b1ee2 50 */
rikvandyck 0:e1edd52b1ee2 51
rikvandyck 0:e1edd52b1ee2 52 /*
rikvandyck 0:e1edd52b1ee2 53 * TODO:
rikvandyck 0:e1edd52b1ee2 54 * Randomize fsm id on link/init.
rikvandyck 0:e1edd52b1ee2 55 * Deal with variable outgoing MTU.
rikvandyck 0:e1edd52b1ee2 56 */
rikvandyck 0:e1edd52b1ee2 57
rikvandyck 0:e1edd52b1ee2 58 #include "lwip/opt.h"
rikvandyck 0:e1edd52b1ee2 59
rikvandyck 0:e1edd52b1ee2 60 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
rikvandyck 0:e1edd52b1ee2 61
rikvandyck 0:e1edd52b1ee2 62 #include "ppp.h"
rikvandyck 0:e1edd52b1ee2 63 #include "pppdebug.h"
rikvandyck 0:e1edd52b1ee2 64
rikvandyck 0:e1edd52b1ee2 65 #include "fsm.h"
rikvandyck 0:e1edd52b1ee2 66
rikvandyck 0:e1edd52b1ee2 67 #include <string.h>
rikvandyck 0:e1edd52b1ee2 68
rikvandyck 0:e1edd52b1ee2 69 #if PPP_DEBUG
rikvandyck 0:e1edd52b1ee2 70 static const char *ppperr_strerr[] = {
rikvandyck 0:e1edd52b1ee2 71 "LS_INITIAL", /* LS_INITIAL 0 */
rikvandyck 0:e1edd52b1ee2 72 "LS_STARTING", /* LS_STARTING 1 */
rikvandyck 0:e1edd52b1ee2 73 "LS_CLOSED", /* LS_CLOSED 2 */
rikvandyck 0:e1edd52b1ee2 74 "LS_STOPPED", /* LS_STOPPED 3 */
rikvandyck 0:e1edd52b1ee2 75 "LS_CLOSING", /* LS_CLOSING 4 */
rikvandyck 0:e1edd52b1ee2 76 "LS_STOPPING", /* LS_STOPPING 5 */
rikvandyck 0:e1edd52b1ee2 77 "LS_REQSENT", /* LS_REQSENT 6 */
rikvandyck 0:e1edd52b1ee2 78 "LS_ACKRCVD", /* LS_ACKRCVD 7 */
rikvandyck 0:e1edd52b1ee2 79 "LS_ACKSENT", /* LS_ACKSENT 8 */
rikvandyck 0:e1edd52b1ee2 80 "LS_OPENED" /* LS_OPENED 9 */
rikvandyck 0:e1edd52b1ee2 81 };
rikvandyck 0:e1edd52b1ee2 82 #endif /* PPP_DEBUG */
rikvandyck 0:e1edd52b1ee2 83
rikvandyck 0:e1edd52b1ee2 84 static void fsm_timeout (void *);
rikvandyck 0:e1edd52b1ee2 85 static void fsm_rconfreq (fsm *, u_char, u_char *, int);
rikvandyck 0:e1edd52b1ee2 86 static void fsm_rconfack (fsm *, int, u_char *, int);
rikvandyck 0:e1edd52b1ee2 87 static void fsm_rconfnakrej (fsm *, int, int, u_char *, int);
rikvandyck 0:e1edd52b1ee2 88 static void fsm_rtermreq (fsm *, int, u_char *, int);
rikvandyck 0:e1edd52b1ee2 89 static void fsm_rtermack (fsm *);
rikvandyck 0:e1edd52b1ee2 90 static void fsm_rcoderej (fsm *, u_char *, int);
rikvandyck 0:e1edd52b1ee2 91 static void fsm_sconfreq (fsm *, int);
rikvandyck 0:e1edd52b1ee2 92
rikvandyck 0:e1edd52b1ee2 93 #define PROTO_NAME(f) ((f)->callbacks->proto_name)
rikvandyck 0:e1edd52b1ee2 94
rikvandyck 0:e1edd52b1ee2 95 int peer_mru[NUM_PPP];
rikvandyck 0:e1edd52b1ee2 96
rikvandyck 0:e1edd52b1ee2 97
rikvandyck 0:e1edd52b1ee2 98 /*
rikvandyck 0:e1edd52b1ee2 99 * fsm_init - Initialize fsm.
rikvandyck 0:e1edd52b1ee2 100 *
rikvandyck 0:e1edd52b1ee2 101 * Initialize fsm state.
rikvandyck 0:e1edd52b1ee2 102 */
rikvandyck 0:e1edd52b1ee2 103 void
rikvandyck 0:e1edd52b1ee2 104 fsm_init(fsm *f)
rikvandyck 0:e1edd52b1ee2 105 {
rikvandyck 0:e1edd52b1ee2 106 f->state = LS_INITIAL;
rikvandyck 0:e1edd52b1ee2 107 f->flags = 0;
rikvandyck 0:e1edd52b1ee2 108 f->id = 0; /* XXX Start with random id? */
rikvandyck 0:e1edd52b1ee2 109 f->timeouttime = FSM_DEFTIMEOUT;
rikvandyck 0:e1edd52b1ee2 110 f->maxconfreqtransmits = FSM_DEFMAXCONFREQS;
rikvandyck 0:e1edd52b1ee2 111 f->maxtermtransmits = FSM_DEFMAXTERMREQS;
rikvandyck 0:e1edd52b1ee2 112 f->maxnakloops = FSM_DEFMAXNAKLOOPS;
rikvandyck 0:e1edd52b1ee2 113 f->term_reason_len = 0;
rikvandyck 0:e1edd52b1ee2 114 }
rikvandyck 0:e1edd52b1ee2 115
rikvandyck 0:e1edd52b1ee2 116
rikvandyck 0:e1edd52b1ee2 117 /*
rikvandyck 0:e1edd52b1ee2 118 * fsm_lowerup - The lower layer is up.
rikvandyck 0:e1edd52b1ee2 119 */
rikvandyck 0:e1edd52b1ee2 120 void
rikvandyck 0:e1edd52b1ee2 121 fsm_lowerup(fsm *f)
rikvandyck 0:e1edd52b1ee2 122 {
rikvandyck 0:e1edd52b1ee2 123 int oldState = f->state;
rikvandyck 0:e1edd52b1ee2 124
rikvandyck 0:e1edd52b1ee2 125 LWIP_UNUSED_ARG(oldState);
rikvandyck 0:e1edd52b1ee2 126
rikvandyck 0:e1edd52b1ee2 127 switch( f->state ) {
rikvandyck 0:e1edd52b1ee2 128 case LS_INITIAL:
rikvandyck 0:e1edd52b1ee2 129 f->state = LS_CLOSED;
rikvandyck 0:e1edd52b1ee2 130 break;
rikvandyck 0:e1edd52b1ee2 131
rikvandyck 0:e1edd52b1ee2 132 case LS_STARTING:
rikvandyck 0:e1edd52b1ee2 133 if( f->flags & OPT_SILENT ) {
rikvandyck 0:e1edd52b1ee2 134 f->state = LS_STOPPED;
rikvandyck 0:e1edd52b1ee2 135 } else {
rikvandyck 0:e1edd52b1ee2 136 /* Send an initial configure-request */
rikvandyck 0:e1edd52b1ee2 137 fsm_sconfreq(f, 0);
rikvandyck 0:e1edd52b1ee2 138 f->state = LS_REQSENT;
rikvandyck 0:e1edd52b1ee2 139 }
rikvandyck 0:e1edd52b1ee2 140 break;
rikvandyck 0:e1edd52b1ee2 141
rikvandyck 0:e1edd52b1ee2 142 default:
rikvandyck 0:e1edd52b1ee2 143 FSMDEBUG(LOG_INFO, ("%s: Up event in state %d (%s)!\n",
rikvandyck 0:e1edd52b1ee2 144 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 145 }
rikvandyck 0:e1edd52b1ee2 146
rikvandyck 0:e1edd52b1ee2 147 FSMDEBUG(LOG_INFO, ("%s: lowerup state %d (%s) -> %d (%s)\n",
rikvandyck 0:e1edd52b1ee2 148 PROTO_NAME(f), oldState, ppperr_strerr[oldState], f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 149 }
rikvandyck 0:e1edd52b1ee2 150
rikvandyck 0:e1edd52b1ee2 151
rikvandyck 0:e1edd52b1ee2 152 /*
rikvandyck 0:e1edd52b1ee2 153 * fsm_lowerdown - The lower layer is down.
rikvandyck 0:e1edd52b1ee2 154 *
rikvandyck 0:e1edd52b1ee2 155 * Cancel all timeouts and inform upper layers.
rikvandyck 0:e1edd52b1ee2 156 */
rikvandyck 0:e1edd52b1ee2 157 void
rikvandyck 0:e1edd52b1ee2 158 fsm_lowerdown(fsm *f)
rikvandyck 0:e1edd52b1ee2 159 {
rikvandyck 0:e1edd52b1ee2 160 int oldState = f->state;
rikvandyck 0:e1edd52b1ee2 161
rikvandyck 0:e1edd52b1ee2 162 LWIP_UNUSED_ARG(oldState);
rikvandyck 0:e1edd52b1ee2 163
rikvandyck 0:e1edd52b1ee2 164 switch( f->state ) {
rikvandyck 0:e1edd52b1ee2 165 case LS_CLOSED:
rikvandyck 0:e1edd52b1ee2 166 f->state = LS_INITIAL;
rikvandyck 0:e1edd52b1ee2 167 break;
rikvandyck 0:e1edd52b1ee2 168
rikvandyck 0:e1edd52b1ee2 169 case LS_STOPPED:
rikvandyck 0:e1edd52b1ee2 170 f->state = LS_STARTING;
rikvandyck 0:e1edd52b1ee2 171 if( f->callbacks->starting ) {
rikvandyck 0:e1edd52b1ee2 172 (*f->callbacks->starting)(f);
rikvandyck 0:e1edd52b1ee2 173 }
rikvandyck 0:e1edd52b1ee2 174 break;
rikvandyck 0:e1edd52b1ee2 175
rikvandyck 0:e1edd52b1ee2 176 case LS_CLOSING:
rikvandyck 0:e1edd52b1ee2 177 f->state = LS_INITIAL;
rikvandyck 0:e1edd52b1ee2 178 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
rikvandyck 0:e1edd52b1ee2 179 break;
rikvandyck 0:e1edd52b1ee2 180
rikvandyck 0:e1edd52b1ee2 181 case LS_STOPPING:
rikvandyck 0:e1edd52b1ee2 182 case LS_REQSENT:
rikvandyck 0:e1edd52b1ee2 183 case LS_ACKRCVD:
rikvandyck 0:e1edd52b1ee2 184 case LS_ACKSENT:
rikvandyck 0:e1edd52b1ee2 185 f->state = LS_STARTING;
rikvandyck 0:e1edd52b1ee2 186 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
rikvandyck 0:e1edd52b1ee2 187 break;
rikvandyck 0:e1edd52b1ee2 188
rikvandyck 0:e1edd52b1ee2 189 case LS_OPENED:
rikvandyck 0:e1edd52b1ee2 190 if( f->callbacks->down ) {
rikvandyck 0:e1edd52b1ee2 191 (*f->callbacks->down)(f);
rikvandyck 0:e1edd52b1ee2 192 }
rikvandyck 0:e1edd52b1ee2 193 f->state = LS_STARTING;
rikvandyck 0:e1edd52b1ee2 194 break;
rikvandyck 0:e1edd52b1ee2 195
rikvandyck 0:e1edd52b1ee2 196 default:
rikvandyck 0:e1edd52b1ee2 197 FSMDEBUG(LOG_INFO, ("%s: Down event in state %d (%s)!\n",
rikvandyck 0:e1edd52b1ee2 198 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 199 }
rikvandyck 0:e1edd52b1ee2 200
rikvandyck 0:e1edd52b1ee2 201 FSMDEBUG(LOG_INFO, ("%s: lowerdown state %d (%s) -> %d (%s)\n",
rikvandyck 0:e1edd52b1ee2 202 PROTO_NAME(f), oldState, ppperr_strerr[oldState], f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 203 }
rikvandyck 0:e1edd52b1ee2 204
rikvandyck 0:e1edd52b1ee2 205
rikvandyck 0:e1edd52b1ee2 206 /*
rikvandyck 0:e1edd52b1ee2 207 * fsm_open - Link is allowed to come up.
rikvandyck 0:e1edd52b1ee2 208 */
rikvandyck 0:e1edd52b1ee2 209 void
rikvandyck 0:e1edd52b1ee2 210 fsm_open(fsm *f)
rikvandyck 0:e1edd52b1ee2 211 {
rikvandyck 0:e1edd52b1ee2 212 int oldState = f->state;
rikvandyck 0:e1edd52b1ee2 213
rikvandyck 0:e1edd52b1ee2 214 LWIP_UNUSED_ARG(oldState);
rikvandyck 0:e1edd52b1ee2 215
rikvandyck 0:e1edd52b1ee2 216 switch( f->state ) {
rikvandyck 0:e1edd52b1ee2 217 case LS_INITIAL:
rikvandyck 0:e1edd52b1ee2 218 f->state = LS_STARTING;
rikvandyck 0:e1edd52b1ee2 219 if( f->callbacks->starting ) {
rikvandyck 0:e1edd52b1ee2 220 (*f->callbacks->starting)(f);
rikvandyck 0:e1edd52b1ee2 221 }
rikvandyck 0:e1edd52b1ee2 222 break;
rikvandyck 0:e1edd52b1ee2 223
rikvandyck 0:e1edd52b1ee2 224 case LS_CLOSED:
rikvandyck 0:e1edd52b1ee2 225 if( f->flags & OPT_SILENT ) {
rikvandyck 0:e1edd52b1ee2 226 f->state = LS_STOPPED;
rikvandyck 0:e1edd52b1ee2 227 } else {
rikvandyck 0:e1edd52b1ee2 228 /* Send an initial configure-request */
rikvandyck 0:e1edd52b1ee2 229 fsm_sconfreq(f, 0);
rikvandyck 0:e1edd52b1ee2 230 f->state = LS_REQSENT;
rikvandyck 0:e1edd52b1ee2 231 }
rikvandyck 0:e1edd52b1ee2 232 break;
rikvandyck 0:e1edd52b1ee2 233
rikvandyck 0:e1edd52b1ee2 234 case LS_CLOSING:
rikvandyck 0:e1edd52b1ee2 235 f->state = LS_STOPPING;
rikvandyck 0:e1edd52b1ee2 236 /* fall through */
rikvandyck 0:e1edd52b1ee2 237 case LS_STOPPED:
rikvandyck 0:e1edd52b1ee2 238 case LS_OPENED:
rikvandyck 0:e1edd52b1ee2 239 if( f->flags & OPT_RESTART ) {
rikvandyck 0:e1edd52b1ee2 240 fsm_lowerdown(f);
rikvandyck 0:e1edd52b1ee2 241 fsm_lowerup(f);
rikvandyck 0:e1edd52b1ee2 242 }
rikvandyck 0:e1edd52b1ee2 243 break;
rikvandyck 0:e1edd52b1ee2 244 }
rikvandyck 0:e1edd52b1ee2 245
rikvandyck 0:e1edd52b1ee2 246 FSMDEBUG(LOG_INFO, ("%s: open state %d (%s) -> %d (%s)\n",
rikvandyck 0:e1edd52b1ee2 247 PROTO_NAME(f), oldState, ppperr_strerr[oldState], f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 248 }
rikvandyck 0:e1edd52b1ee2 249
rikvandyck 0:e1edd52b1ee2 250 #if 0 /* backport pppd 2.4.4b1; */
rikvandyck 0:e1edd52b1ee2 251 /*
rikvandyck 0:e1edd52b1ee2 252 * terminate_layer - Start process of shutting down the FSM
rikvandyck 0:e1edd52b1ee2 253 *
rikvandyck 0:e1edd52b1ee2 254 * Cancel any timeout running, notify upper layers we're done, and
rikvandyck 0:e1edd52b1ee2 255 * send a terminate-request message as configured.
rikvandyck 0:e1edd52b1ee2 256 */
rikvandyck 0:e1edd52b1ee2 257 static void
rikvandyck 0:e1edd52b1ee2 258 terminate_layer(fsm *f, int nextstate)
rikvandyck 0:e1edd52b1ee2 259 {
rikvandyck 0:e1edd52b1ee2 260 /* @todo */
rikvandyck 0:e1edd52b1ee2 261 }
rikvandyck 0:e1edd52b1ee2 262 #endif
rikvandyck 0:e1edd52b1ee2 263
rikvandyck 0:e1edd52b1ee2 264 /*
rikvandyck 0:e1edd52b1ee2 265 * fsm_close - Start closing connection.
rikvandyck 0:e1edd52b1ee2 266 *
rikvandyck 0:e1edd52b1ee2 267 * Cancel timeouts and either initiate close or possibly go directly to
rikvandyck 0:e1edd52b1ee2 268 * the LS_CLOSED state.
rikvandyck 0:e1edd52b1ee2 269 */
rikvandyck 0:e1edd52b1ee2 270 void
rikvandyck 0:e1edd52b1ee2 271 fsm_close(fsm *f, char *reason)
rikvandyck 0:e1edd52b1ee2 272 {
rikvandyck 0:e1edd52b1ee2 273 int oldState = f->state;
rikvandyck 0:e1edd52b1ee2 274
rikvandyck 0:e1edd52b1ee2 275 LWIP_UNUSED_ARG(oldState);
rikvandyck 0:e1edd52b1ee2 276
rikvandyck 0:e1edd52b1ee2 277 f->term_reason = reason;
rikvandyck 0:e1edd52b1ee2 278 f->term_reason_len = (reason == NULL ? 0 : (int)strlen(reason));
rikvandyck 0:e1edd52b1ee2 279 switch( f->state ) {
rikvandyck 0:e1edd52b1ee2 280 case LS_STARTING:
rikvandyck 0:e1edd52b1ee2 281 f->state = LS_INITIAL;
rikvandyck 0:e1edd52b1ee2 282 break;
rikvandyck 0:e1edd52b1ee2 283 case LS_STOPPED:
rikvandyck 0:e1edd52b1ee2 284 f->state = LS_CLOSED;
rikvandyck 0:e1edd52b1ee2 285 break;
rikvandyck 0:e1edd52b1ee2 286 case LS_STOPPING:
rikvandyck 0:e1edd52b1ee2 287 f->state = LS_CLOSING;
rikvandyck 0:e1edd52b1ee2 288 break;
rikvandyck 0:e1edd52b1ee2 289
rikvandyck 0:e1edd52b1ee2 290 case LS_REQSENT:
rikvandyck 0:e1edd52b1ee2 291 case LS_ACKRCVD:
rikvandyck 0:e1edd52b1ee2 292 case LS_ACKSENT:
rikvandyck 0:e1edd52b1ee2 293 case LS_OPENED:
rikvandyck 0:e1edd52b1ee2 294 if( f->state != LS_OPENED ) {
rikvandyck 0:e1edd52b1ee2 295 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
rikvandyck 0:e1edd52b1ee2 296 } else if( f->callbacks->down ) {
rikvandyck 0:e1edd52b1ee2 297 (*f->callbacks->down)(f); /* Inform upper layers we're down */
rikvandyck 0:e1edd52b1ee2 298 }
rikvandyck 0:e1edd52b1ee2 299 /* Init restart counter, send Terminate-Request */
rikvandyck 0:e1edd52b1ee2 300 f->retransmits = f->maxtermtransmits;
rikvandyck 0:e1edd52b1ee2 301 fsm_sdata(f, TERMREQ, f->reqid = ++f->id,
rikvandyck 0:e1edd52b1ee2 302 (u_char *) f->term_reason, f->term_reason_len);
rikvandyck 0:e1edd52b1ee2 303 TIMEOUT(fsm_timeout, f, f->timeouttime);
rikvandyck 0:e1edd52b1ee2 304 --f->retransmits;
rikvandyck 0:e1edd52b1ee2 305
rikvandyck 0:e1edd52b1ee2 306 f->state = LS_CLOSING;
rikvandyck 0:e1edd52b1ee2 307 break;
rikvandyck 0:e1edd52b1ee2 308 }
rikvandyck 0:e1edd52b1ee2 309
rikvandyck 0:e1edd52b1ee2 310 FSMDEBUG(LOG_INFO, ("%s: close reason=%s state %d (%s) -> %d (%s)\n",
rikvandyck 0:e1edd52b1ee2 311 PROTO_NAME(f), reason, oldState, ppperr_strerr[oldState], f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 312 }
rikvandyck 0:e1edd52b1ee2 313
rikvandyck 0:e1edd52b1ee2 314
rikvandyck 0:e1edd52b1ee2 315 /*
rikvandyck 0:e1edd52b1ee2 316 * fsm_timeout - Timeout expired.
rikvandyck 0:e1edd52b1ee2 317 */
rikvandyck 0:e1edd52b1ee2 318 static void
rikvandyck 0:e1edd52b1ee2 319 fsm_timeout(void *arg)
rikvandyck 0:e1edd52b1ee2 320 {
rikvandyck 0:e1edd52b1ee2 321 fsm *f = (fsm *) arg;
rikvandyck 0:e1edd52b1ee2 322
rikvandyck 0:e1edd52b1ee2 323 switch (f->state) {
rikvandyck 0:e1edd52b1ee2 324 case LS_CLOSING:
rikvandyck 0:e1edd52b1ee2 325 case LS_STOPPING:
rikvandyck 0:e1edd52b1ee2 326 if( f->retransmits <= 0 ) {
rikvandyck 0:e1edd52b1ee2 327 FSMDEBUG(LOG_WARNING, ("%s: timeout sending Terminate-Request state=%d (%s)\n",
rikvandyck 0:e1edd52b1ee2 328 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 329 /*
rikvandyck 0:e1edd52b1ee2 330 * We've waited for an ack long enough. Peer probably heard us.
rikvandyck 0:e1edd52b1ee2 331 */
rikvandyck 0:e1edd52b1ee2 332 f->state = (f->state == LS_CLOSING)? LS_CLOSED: LS_STOPPED;
rikvandyck 0:e1edd52b1ee2 333 if( f->callbacks->finished ) {
rikvandyck 0:e1edd52b1ee2 334 (*f->callbacks->finished)(f);
rikvandyck 0:e1edd52b1ee2 335 }
rikvandyck 0:e1edd52b1ee2 336 } else {
rikvandyck 0:e1edd52b1ee2 337 FSMDEBUG(LOG_WARNING, ("%s: timeout resending Terminate-Requests state=%d (%s)\n",
rikvandyck 0:e1edd52b1ee2 338 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 339 /* Send Terminate-Request */
rikvandyck 0:e1edd52b1ee2 340 fsm_sdata(f, TERMREQ, f->reqid = ++f->id,
rikvandyck 0:e1edd52b1ee2 341 (u_char *) f->term_reason, f->term_reason_len);
rikvandyck 0:e1edd52b1ee2 342 TIMEOUT(fsm_timeout, f, f->timeouttime);
rikvandyck 0:e1edd52b1ee2 343 --f->retransmits;
rikvandyck 0:e1edd52b1ee2 344 }
rikvandyck 0:e1edd52b1ee2 345 break;
rikvandyck 0:e1edd52b1ee2 346
rikvandyck 0:e1edd52b1ee2 347 case LS_REQSENT:
rikvandyck 0:e1edd52b1ee2 348 case LS_ACKRCVD:
rikvandyck 0:e1edd52b1ee2 349 case LS_ACKSENT:
rikvandyck 0:e1edd52b1ee2 350 if (f->retransmits <= 0) {
rikvandyck 0:e1edd52b1ee2 351 FSMDEBUG(LOG_WARNING, ("%s: timeout sending Config-Requests state=%d (%s)\n",
rikvandyck 0:e1edd52b1ee2 352 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 353 f->state = LS_STOPPED;
rikvandyck 0:e1edd52b1ee2 354 if( (f->flags & OPT_PASSIVE) == 0 && f->callbacks->finished ) {
rikvandyck 0:e1edd52b1ee2 355 (*f->callbacks->finished)(f);
rikvandyck 0:e1edd52b1ee2 356 }
rikvandyck 0:e1edd52b1ee2 357 } else {
rikvandyck 0:e1edd52b1ee2 358 FSMDEBUG(LOG_WARNING, ("%s: timeout resending Config-Request state=%d (%s)\n",
rikvandyck 0:e1edd52b1ee2 359 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 360 /* Retransmit the configure-request */
rikvandyck 0:e1edd52b1ee2 361 if (f->callbacks->retransmit) {
rikvandyck 0:e1edd52b1ee2 362 (*f->callbacks->retransmit)(f);
rikvandyck 0:e1edd52b1ee2 363 }
rikvandyck 0:e1edd52b1ee2 364 fsm_sconfreq(f, 1); /* Re-send Configure-Request */
rikvandyck 0:e1edd52b1ee2 365 if( f->state == LS_ACKRCVD ) {
rikvandyck 0:e1edd52b1ee2 366 f->state = LS_REQSENT;
rikvandyck 0:e1edd52b1ee2 367 }
rikvandyck 0:e1edd52b1ee2 368 }
rikvandyck 0:e1edd52b1ee2 369 break;
rikvandyck 0:e1edd52b1ee2 370
rikvandyck 0:e1edd52b1ee2 371 default:
rikvandyck 0:e1edd52b1ee2 372 FSMDEBUG(LOG_INFO, ("%s: UNHANDLED timeout event in state %d (%s)!\n",
rikvandyck 0:e1edd52b1ee2 373 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 374 }
rikvandyck 0:e1edd52b1ee2 375 }
rikvandyck 0:e1edd52b1ee2 376
rikvandyck 0:e1edd52b1ee2 377
rikvandyck 0:e1edd52b1ee2 378 /*
rikvandyck 0:e1edd52b1ee2 379 * fsm_input - Input packet.
rikvandyck 0:e1edd52b1ee2 380 */
rikvandyck 0:e1edd52b1ee2 381 void
rikvandyck 0:e1edd52b1ee2 382 fsm_input(fsm *f, u_char *inpacket, int l)
rikvandyck 0:e1edd52b1ee2 383 {
rikvandyck 0:e1edd52b1ee2 384 u_char *inp = inpacket;
rikvandyck 0:e1edd52b1ee2 385 u_char code, id;
rikvandyck 0:e1edd52b1ee2 386 int len;
rikvandyck 0:e1edd52b1ee2 387
rikvandyck 0:e1edd52b1ee2 388 /*
rikvandyck 0:e1edd52b1ee2 389 * Parse header (code, id and length).
rikvandyck 0:e1edd52b1ee2 390 * If packet too short, drop it.
rikvandyck 0:e1edd52b1ee2 391 */
rikvandyck 0:e1edd52b1ee2 392 if (l < HEADERLEN) {
rikvandyck 0:e1edd52b1ee2 393 FSMDEBUG(LOG_WARNING, ("fsm_input(%x): Rcvd short header.\n",
rikvandyck 0:e1edd52b1ee2 394 f->protocol));
rikvandyck 0:e1edd52b1ee2 395 return;
rikvandyck 0:e1edd52b1ee2 396 }
rikvandyck 0:e1edd52b1ee2 397 GETCHAR(code, inp);
rikvandyck 0:e1edd52b1ee2 398 GETCHAR(id, inp);
rikvandyck 0:e1edd52b1ee2 399 GETSHORT(len, inp);
rikvandyck 0:e1edd52b1ee2 400 if (len < HEADERLEN) {
rikvandyck 0:e1edd52b1ee2 401 FSMDEBUG(LOG_INFO, ("fsm_input(%x): Rcvd illegal length.\n",
rikvandyck 0:e1edd52b1ee2 402 f->protocol));
rikvandyck 0:e1edd52b1ee2 403 return;
rikvandyck 0:e1edd52b1ee2 404 }
rikvandyck 0:e1edd52b1ee2 405 if (len > l) {
rikvandyck 0:e1edd52b1ee2 406 FSMDEBUG(LOG_INFO, ("fsm_input(%x): Rcvd short packet.\n",
rikvandyck 0:e1edd52b1ee2 407 f->protocol));
rikvandyck 0:e1edd52b1ee2 408 return;
rikvandyck 0:e1edd52b1ee2 409 }
rikvandyck 0:e1edd52b1ee2 410 len -= HEADERLEN; /* subtract header length */
rikvandyck 0:e1edd52b1ee2 411
rikvandyck 0:e1edd52b1ee2 412 if( f->state == LS_INITIAL || f->state == LS_STARTING ) {
rikvandyck 0:e1edd52b1ee2 413 FSMDEBUG(LOG_INFO, ("fsm_input(%x): Rcvd packet in state %d (%s).\n",
rikvandyck 0:e1edd52b1ee2 414 f->protocol, f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 415 return;
rikvandyck 0:e1edd52b1ee2 416 }
rikvandyck 0:e1edd52b1ee2 417 FSMDEBUG(LOG_INFO, ("fsm_input(%s):%d,%d,%d\n", PROTO_NAME(f), code, id, l));
rikvandyck 0:e1edd52b1ee2 418 /*
rikvandyck 0:e1edd52b1ee2 419 * Action depends on code.
rikvandyck 0:e1edd52b1ee2 420 */
rikvandyck 0:e1edd52b1ee2 421 switch (code) {
rikvandyck 0:e1edd52b1ee2 422 case CONFREQ:
rikvandyck 0:e1edd52b1ee2 423 fsm_rconfreq(f, id, inp, len);
rikvandyck 0:e1edd52b1ee2 424 break;
rikvandyck 0:e1edd52b1ee2 425
rikvandyck 0:e1edd52b1ee2 426 case CONFACK:
rikvandyck 0:e1edd52b1ee2 427 fsm_rconfack(f, id, inp, len);
rikvandyck 0:e1edd52b1ee2 428 break;
rikvandyck 0:e1edd52b1ee2 429
rikvandyck 0:e1edd52b1ee2 430 case CONFNAK:
rikvandyck 0:e1edd52b1ee2 431 case CONFREJ:
rikvandyck 0:e1edd52b1ee2 432 fsm_rconfnakrej(f, code, id, inp, len);
rikvandyck 0:e1edd52b1ee2 433 break;
rikvandyck 0:e1edd52b1ee2 434
rikvandyck 0:e1edd52b1ee2 435 case TERMREQ:
rikvandyck 0:e1edd52b1ee2 436 fsm_rtermreq(f, id, inp, len);
rikvandyck 0:e1edd52b1ee2 437 break;
rikvandyck 0:e1edd52b1ee2 438
rikvandyck 0:e1edd52b1ee2 439 case TERMACK:
rikvandyck 0:e1edd52b1ee2 440 fsm_rtermack(f);
rikvandyck 0:e1edd52b1ee2 441 break;
rikvandyck 0:e1edd52b1ee2 442
rikvandyck 0:e1edd52b1ee2 443 case CODEREJ:
rikvandyck 0:e1edd52b1ee2 444 fsm_rcoderej(f, inp, len);
rikvandyck 0:e1edd52b1ee2 445 break;
rikvandyck 0:e1edd52b1ee2 446
rikvandyck 0:e1edd52b1ee2 447 default:
rikvandyck 0:e1edd52b1ee2 448 FSMDEBUG(LOG_INFO, ("fsm_input(%s): default: \n", PROTO_NAME(f)));
rikvandyck 0:e1edd52b1ee2 449 if( !f->callbacks->extcode ||
rikvandyck 0:e1edd52b1ee2 450 !(*f->callbacks->extcode)(f, code, id, inp, len) ) {
rikvandyck 0:e1edd52b1ee2 451 fsm_sdata(f, CODEREJ, ++f->id, inpacket, len + HEADERLEN);
rikvandyck 0:e1edd52b1ee2 452 }
rikvandyck 0:e1edd52b1ee2 453 break;
rikvandyck 0:e1edd52b1ee2 454 }
rikvandyck 0:e1edd52b1ee2 455 }
rikvandyck 0:e1edd52b1ee2 456
rikvandyck 0:e1edd52b1ee2 457
rikvandyck 0:e1edd52b1ee2 458 /*
rikvandyck 0:e1edd52b1ee2 459 * fsm_rconfreq - Receive Configure-Request.
rikvandyck 0:e1edd52b1ee2 460 */
rikvandyck 0:e1edd52b1ee2 461 static void
rikvandyck 0:e1edd52b1ee2 462 fsm_rconfreq(fsm *f, u_char id, u_char *inp, int len)
rikvandyck 0:e1edd52b1ee2 463 {
rikvandyck 0:e1edd52b1ee2 464 int code, reject_if_disagree;
rikvandyck 0:e1edd52b1ee2 465
rikvandyck 0:e1edd52b1ee2 466 FSMDEBUG(LOG_INFO, ("fsm_rconfreq(%s): Rcvd id %d state=%d (%s)\n",
rikvandyck 0:e1edd52b1ee2 467 PROTO_NAME(f), id, f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 468 switch( f->state ) {
rikvandyck 0:e1edd52b1ee2 469 case LS_CLOSED:
rikvandyck 0:e1edd52b1ee2 470 /* Go away, we're closed */
rikvandyck 0:e1edd52b1ee2 471 fsm_sdata(f, TERMACK, id, NULL, 0);
rikvandyck 0:e1edd52b1ee2 472 return;
rikvandyck 0:e1edd52b1ee2 473 case LS_CLOSING:
rikvandyck 0:e1edd52b1ee2 474 case LS_STOPPING:
rikvandyck 0:e1edd52b1ee2 475 return;
rikvandyck 0:e1edd52b1ee2 476
rikvandyck 0:e1edd52b1ee2 477 case LS_OPENED:
rikvandyck 0:e1edd52b1ee2 478 /* Go down and restart negotiation */
rikvandyck 0:e1edd52b1ee2 479 if( f->callbacks->down ) {
rikvandyck 0:e1edd52b1ee2 480 (*f->callbacks->down)(f); /* Inform upper layers */
rikvandyck 0:e1edd52b1ee2 481 }
rikvandyck 0:e1edd52b1ee2 482 fsm_sconfreq(f, 0); /* Send initial Configure-Request */
rikvandyck 0:e1edd52b1ee2 483 break;
rikvandyck 0:e1edd52b1ee2 484
rikvandyck 0:e1edd52b1ee2 485 case LS_STOPPED:
rikvandyck 0:e1edd52b1ee2 486 /* Negotiation started by our peer */
rikvandyck 0:e1edd52b1ee2 487 fsm_sconfreq(f, 0); /* Send initial Configure-Request */
rikvandyck 0:e1edd52b1ee2 488 f->state = LS_REQSENT;
rikvandyck 0:e1edd52b1ee2 489 break;
rikvandyck 0:e1edd52b1ee2 490 }
rikvandyck 0:e1edd52b1ee2 491
rikvandyck 0:e1edd52b1ee2 492 /*
rikvandyck 0:e1edd52b1ee2 493 * Pass the requested configuration options
rikvandyck 0:e1edd52b1ee2 494 * to protocol-specific code for checking.
rikvandyck 0:e1edd52b1ee2 495 */
rikvandyck 0:e1edd52b1ee2 496 if (f->callbacks->reqci) { /* Check CI */
rikvandyck 0:e1edd52b1ee2 497 reject_if_disagree = (f->nakloops >= f->maxnakloops);
rikvandyck 0:e1edd52b1ee2 498 code = (*f->callbacks->reqci)(f, inp, &len, reject_if_disagree);
rikvandyck 0:e1edd52b1ee2 499 } else if (len) {
rikvandyck 0:e1edd52b1ee2 500 code = CONFREJ; /* Reject all CI */
rikvandyck 0:e1edd52b1ee2 501 } else {
rikvandyck 0:e1edd52b1ee2 502 code = CONFACK;
rikvandyck 0:e1edd52b1ee2 503 }
rikvandyck 0:e1edd52b1ee2 504
rikvandyck 0:e1edd52b1ee2 505 /* send the Ack, Nak or Rej to the peer */
rikvandyck 0:e1edd52b1ee2 506 fsm_sdata(f, (u_char)code, id, inp, len);
rikvandyck 0:e1edd52b1ee2 507
rikvandyck 0:e1edd52b1ee2 508 if (code == CONFACK) {
rikvandyck 0:e1edd52b1ee2 509 if (f->state == LS_ACKRCVD) {
rikvandyck 0:e1edd52b1ee2 510 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
rikvandyck 0:e1edd52b1ee2 511 f->state = LS_OPENED;
rikvandyck 0:e1edd52b1ee2 512 if (f->callbacks->up) {
rikvandyck 0:e1edd52b1ee2 513 (*f->callbacks->up)(f); /* Inform upper layers */
rikvandyck 0:e1edd52b1ee2 514 }
rikvandyck 0:e1edd52b1ee2 515 } else {
rikvandyck 0:e1edd52b1ee2 516 f->state = LS_ACKSENT;
rikvandyck 0:e1edd52b1ee2 517 }
rikvandyck 0:e1edd52b1ee2 518 f->nakloops = 0;
rikvandyck 0:e1edd52b1ee2 519 } else {
rikvandyck 0:e1edd52b1ee2 520 /* we sent CONFACK or CONFREJ */
rikvandyck 0:e1edd52b1ee2 521 if (f->state != LS_ACKRCVD) {
rikvandyck 0:e1edd52b1ee2 522 f->state = LS_REQSENT;
rikvandyck 0:e1edd52b1ee2 523 }
rikvandyck 0:e1edd52b1ee2 524 if( code == CONFNAK ) {
rikvandyck 0:e1edd52b1ee2 525 ++f->nakloops;
rikvandyck 0:e1edd52b1ee2 526 }
rikvandyck 0:e1edd52b1ee2 527 }
rikvandyck 0:e1edd52b1ee2 528 }
rikvandyck 0:e1edd52b1ee2 529
rikvandyck 0:e1edd52b1ee2 530
rikvandyck 0:e1edd52b1ee2 531 /*
rikvandyck 0:e1edd52b1ee2 532 * fsm_rconfack - Receive Configure-Ack.
rikvandyck 0:e1edd52b1ee2 533 */
rikvandyck 0:e1edd52b1ee2 534 static void
rikvandyck 0:e1edd52b1ee2 535 fsm_rconfack(fsm *f, int id, u_char *inp, int len)
rikvandyck 0:e1edd52b1ee2 536 {
rikvandyck 0:e1edd52b1ee2 537 FSMDEBUG(LOG_INFO, ("fsm_rconfack(%s): Rcvd id %d state=%d (%s)\n",
rikvandyck 0:e1edd52b1ee2 538 PROTO_NAME(f), id, f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 539
rikvandyck 0:e1edd52b1ee2 540 if (id != f->reqid || f->seen_ack) { /* Expected id? */
rikvandyck 0:e1edd52b1ee2 541 return; /* Nope, toss... */
rikvandyck 0:e1edd52b1ee2 542 }
rikvandyck 0:e1edd52b1ee2 543 if( !(f->callbacks->ackci? (*f->callbacks->ackci)(f, inp, len): (len == 0)) ) {
rikvandyck 0:e1edd52b1ee2 544 /* Ack is bad - ignore it */
rikvandyck 0:e1edd52b1ee2 545 FSMDEBUG(LOG_INFO, ("%s: received bad Ack (length %d)\n",
rikvandyck 0:e1edd52b1ee2 546 PROTO_NAME(f), len));
rikvandyck 0:e1edd52b1ee2 547 return;
rikvandyck 0:e1edd52b1ee2 548 }
rikvandyck 0:e1edd52b1ee2 549 f->seen_ack = 1;
rikvandyck 0:e1edd52b1ee2 550
rikvandyck 0:e1edd52b1ee2 551 switch (f->state) {
rikvandyck 0:e1edd52b1ee2 552 case LS_CLOSED:
rikvandyck 0:e1edd52b1ee2 553 case LS_STOPPED:
rikvandyck 0:e1edd52b1ee2 554 fsm_sdata(f, TERMACK, (u_char)id, NULL, 0);
rikvandyck 0:e1edd52b1ee2 555 break;
rikvandyck 0:e1edd52b1ee2 556
rikvandyck 0:e1edd52b1ee2 557 case LS_REQSENT:
rikvandyck 0:e1edd52b1ee2 558 f->state = LS_ACKRCVD;
rikvandyck 0:e1edd52b1ee2 559 f->retransmits = f->maxconfreqtransmits;
rikvandyck 0:e1edd52b1ee2 560 break;
rikvandyck 0:e1edd52b1ee2 561
rikvandyck 0:e1edd52b1ee2 562 case LS_ACKRCVD:
rikvandyck 0:e1edd52b1ee2 563 /* Huh? an extra valid Ack? oh well... */
rikvandyck 0:e1edd52b1ee2 564 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
rikvandyck 0:e1edd52b1ee2 565 fsm_sconfreq(f, 0);
rikvandyck 0:e1edd52b1ee2 566 f->state = LS_REQSENT;
rikvandyck 0:e1edd52b1ee2 567 break;
rikvandyck 0:e1edd52b1ee2 568
rikvandyck 0:e1edd52b1ee2 569 case LS_ACKSENT:
rikvandyck 0:e1edd52b1ee2 570 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
rikvandyck 0:e1edd52b1ee2 571 f->state = LS_OPENED;
rikvandyck 0:e1edd52b1ee2 572 f->retransmits = f->maxconfreqtransmits;
rikvandyck 0:e1edd52b1ee2 573 if (f->callbacks->up) {
rikvandyck 0:e1edd52b1ee2 574 (*f->callbacks->up)(f); /* Inform upper layers */
rikvandyck 0:e1edd52b1ee2 575 }
rikvandyck 0:e1edd52b1ee2 576 break;
rikvandyck 0:e1edd52b1ee2 577
rikvandyck 0:e1edd52b1ee2 578 case LS_OPENED:
rikvandyck 0:e1edd52b1ee2 579 /* Go down and restart negotiation */
rikvandyck 0:e1edd52b1ee2 580 if (f->callbacks->down) {
rikvandyck 0:e1edd52b1ee2 581 (*f->callbacks->down)(f); /* Inform upper layers */
rikvandyck 0:e1edd52b1ee2 582 }
rikvandyck 0:e1edd52b1ee2 583 fsm_sconfreq(f, 0); /* Send initial Configure-Request */
rikvandyck 0:e1edd52b1ee2 584 f->state = LS_REQSENT;
rikvandyck 0:e1edd52b1ee2 585 break;
rikvandyck 0:e1edd52b1ee2 586 }
rikvandyck 0:e1edd52b1ee2 587 }
rikvandyck 0:e1edd52b1ee2 588
rikvandyck 0:e1edd52b1ee2 589
rikvandyck 0:e1edd52b1ee2 590 /*
rikvandyck 0:e1edd52b1ee2 591 * fsm_rconfnakrej - Receive Configure-Nak or Configure-Reject.
rikvandyck 0:e1edd52b1ee2 592 */
rikvandyck 0:e1edd52b1ee2 593 static void
rikvandyck 0:e1edd52b1ee2 594 fsm_rconfnakrej(fsm *f, int code, int id, u_char *inp, int len)
rikvandyck 0:e1edd52b1ee2 595 {
rikvandyck 0:e1edd52b1ee2 596 int (*proc) (fsm *, u_char *, int);
rikvandyck 0:e1edd52b1ee2 597 int ret;
rikvandyck 0:e1edd52b1ee2 598
rikvandyck 0:e1edd52b1ee2 599 FSMDEBUG(LOG_INFO, ("fsm_rconfnakrej(%s): Rcvd id %d state=%d (%s)\n",
rikvandyck 0:e1edd52b1ee2 600 PROTO_NAME(f), id, f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 601
rikvandyck 0:e1edd52b1ee2 602 if (id != f->reqid || f->seen_ack) { /* Expected id? */
rikvandyck 0:e1edd52b1ee2 603 return; /* Nope, toss... */
rikvandyck 0:e1edd52b1ee2 604 }
rikvandyck 0:e1edd52b1ee2 605 proc = (code == CONFNAK)? f->callbacks->nakci: f->callbacks->rejci;
rikvandyck 0:e1edd52b1ee2 606 if (!proc || !((ret = proc(f, inp, len)))) {
rikvandyck 0:e1edd52b1ee2 607 /* Nak/reject is bad - ignore it */
rikvandyck 0:e1edd52b1ee2 608 FSMDEBUG(LOG_INFO, ("%s: received bad %s (length %d)\n",
rikvandyck 0:e1edd52b1ee2 609 PROTO_NAME(f), (code==CONFNAK? "Nak": "reject"), len));
rikvandyck 0:e1edd52b1ee2 610 return;
rikvandyck 0:e1edd52b1ee2 611 }
rikvandyck 0:e1edd52b1ee2 612 f->seen_ack = 1;
rikvandyck 0:e1edd52b1ee2 613
rikvandyck 0:e1edd52b1ee2 614 switch (f->state) {
rikvandyck 0:e1edd52b1ee2 615 case LS_CLOSED:
rikvandyck 0:e1edd52b1ee2 616 case LS_STOPPED:
rikvandyck 0:e1edd52b1ee2 617 fsm_sdata(f, TERMACK, (u_char)id, NULL, 0);
rikvandyck 0:e1edd52b1ee2 618 break;
rikvandyck 0:e1edd52b1ee2 619
rikvandyck 0:e1edd52b1ee2 620 case LS_REQSENT:
rikvandyck 0:e1edd52b1ee2 621 case LS_ACKSENT:
rikvandyck 0:e1edd52b1ee2 622 /* They didn't agree to what we wanted - try another request */
rikvandyck 0:e1edd52b1ee2 623 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
rikvandyck 0:e1edd52b1ee2 624 if (ret < 0) {
rikvandyck 0:e1edd52b1ee2 625 f->state = LS_STOPPED; /* kludge for stopping CCP */
rikvandyck 0:e1edd52b1ee2 626 } else {
rikvandyck 0:e1edd52b1ee2 627 fsm_sconfreq(f, 0); /* Send Configure-Request */
rikvandyck 0:e1edd52b1ee2 628 }
rikvandyck 0:e1edd52b1ee2 629 break;
rikvandyck 0:e1edd52b1ee2 630
rikvandyck 0:e1edd52b1ee2 631 case LS_ACKRCVD:
rikvandyck 0:e1edd52b1ee2 632 /* Got a Nak/reject when we had already had an Ack?? oh well... */
rikvandyck 0:e1edd52b1ee2 633 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
rikvandyck 0:e1edd52b1ee2 634 fsm_sconfreq(f, 0);
rikvandyck 0:e1edd52b1ee2 635 f->state = LS_REQSENT;
rikvandyck 0:e1edd52b1ee2 636 break;
rikvandyck 0:e1edd52b1ee2 637
rikvandyck 0:e1edd52b1ee2 638 case LS_OPENED:
rikvandyck 0:e1edd52b1ee2 639 /* Go down and restart negotiation */
rikvandyck 0:e1edd52b1ee2 640 if (f->callbacks->down) {
rikvandyck 0:e1edd52b1ee2 641 (*f->callbacks->down)(f); /* Inform upper layers */
rikvandyck 0:e1edd52b1ee2 642 }
rikvandyck 0:e1edd52b1ee2 643 fsm_sconfreq(f, 0); /* Send initial Configure-Request */
rikvandyck 0:e1edd52b1ee2 644 f->state = LS_REQSENT;
rikvandyck 0:e1edd52b1ee2 645 break;
rikvandyck 0:e1edd52b1ee2 646 }
rikvandyck 0:e1edd52b1ee2 647 }
rikvandyck 0:e1edd52b1ee2 648
rikvandyck 0:e1edd52b1ee2 649
rikvandyck 0:e1edd52b1ee2 650 /*
rikvandyck 0:e1edd52b1ee2 651 * fsm_rtermreq - Receive Terminate-Req.
rikvandyck 0:e1edd52b1ee2 652 */
rikvandyck 0:e1edd52b1ee2 653 static void
rikvandyck 0:e1edd52b1ee2 654 fsm_rtermreq(fsm *f, int id, u_char *p, int len)
rikvandyck 0:e1edd52b1ee2 655 {
rikvandyck 0:e1edd52b1ee2 656 LWIP_UNUSED_ARG(p);
rikvandyck 0:e1edd52b1ee2 657
rikvandyck 0:e1edd52b1ee2 658 FSMDEBUG(LOG_INFO, ("fsm_rtermreq(%s): Rcvd id %d state=%d (%s)\n",
rikvandyck 0:e1edd52b1ee2 659 PROTO_NAME(f), id, f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 660
rikvandyck 0:e1edd52b1ee2 661 switch (f->state) {
rikvandyck 0:e1edd52b1ee2 662 case LS_ACKRCVD:
rikvandyck 0:e1edd52b1ee2 663 case LS_ACKSENT:
rikvandyck 0:e1edd52b1ee2 664 f->state = LS_REQSENT; /* Start over but keep trying */
rikvandyck 0:e1edd52b1ee2 665 break;
rikvandyck 0:e1edd52b1ee2 666
rikvandyck 0:e1edd52b1ee2 667 case LS_OPENED:
rikvandyck 0:e1edd52b1ee2 668 if (len > 0) {
rikvandyck 0:e1edd52b1ee2 669 FSMDEBUG(LOG_INFO, ("%s terminated by peer (%p)\n", PROTO_NAME(f), p));
rikvandyck 0:e1edd52b1ee2 670 } else {
rikvandyck 0:e1edd52b1ee2 671 FSMDEBUG(LOG_INFO, ("%s terminated by peer\n", PROTO_NAME(f)));
rikvandyck 0:e1edd52b1ee2 672 }
rikvandyck 0:e1edd52b1ee2 673 if (f->callbacks->down) {
rikvandyck 0:e1edd52b1ee2 674 (*f->callbacks->down)(f); /* Inform upper layers */
rikvandyck 0:e1edd52b1ee2 675 }
rikvandyck 0:e1edd52b1ee2 676 f->retransmits = 0;
rikvandyck 0:e1edd52b1ee2 677 f->state = LS_STOPPING;
rikvandyck 0:e1edd52b1ee2 678 TIMEOUT(fsm_timeout, f, f->timeouttime);
rikvandyck 0:e1edd52b1ee2 679 break;
rikvandyck 0:e1edd52b1ee2 680 }
rikvandyck 0:e1edd52b1ee2 681
rikvandyck 0:e1edd52b1ee2 682 fsm_sdata(f, TERMACK, (u_char)id, NULL, 0);
rikvandyck 0:e1edd52b1ee2 683 }
rikvandyck 0:e1edd52b1ee2 684
rikvandyck 0:e1edd52b1ee2 685
rikvandyck 0:e1edd52b1ee2 686 /*
rikvandyck 0:e1edd52b1ee2 687 * fsm_rtermack - Receive Terminate-Ack.
rikvandyck 0:e1edd52b1ee2 688 */
rikvandyck 0:e1edd52b1ee2 689 static void
rikvandyck 0:e1edd52b1ee2 690 fsm_rtermack(fsm *f)
rikvandyck 0:e1edd52b1ee2 691 {
rikvandyck 0:e1edd52b1ee2 692 FSMDEBUG(LOG_INFO, ("fsm_rtermack(%s): state=%d (%s)\n",
rikvandyck 0:e1edd52b1ee2 693 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 694
rikvandyck 0:e1edd52b1ee2 695 switch (f->state) {
rikvandyck 0:e1edd52b1ee2 696 case LS_CLOSING:
rikvandyck 0:e1edd52b1ee2 697 UNTIMEOUT(fsm_timeout, f);
rikvandyck 0:e1edd52b1ee2 698 f->state = LS_CLOSED;
rikvandyck 0:e1edd52b1ee2 699 if( f->callbacks->finished ) {
rikvandyck 0:e1edd52b1ee2 700 (*f->callbacks->finished)(f);
rikvandyck 0:e1edd52b1ee2 701 }
rikvandyck 0:e1edd52b1ee2 702 break;
rikvandyck 0:e1edd52b1ee2 703
rikvandyck 0:e1edd52b1ee2 704 case LS_STOPPING:
rikvandyck 0:e1edd52b1ee2 705 UNTIMEOUT(fsm_timeout, f);
rikvandyck 0:e1edd52b1ee2 706 f->state = LS_STOPPED;
rikvandyck 0:e1edd52b1ee2 707 if( f->callbacks->finished ) {
rikvandyck 0:e1edd52b1ee2 708 (*f->callbacks->finished)(f);
rikvandyck 0:e1edd52b1ee2 709 }
rikvandyck 0:e1edd52b1ee2 710 break;
rikvandyck 0:e1edd52b1ee2 711
rikvandyck 0:e1edd52b1ee2 712 case LS_ACKRCVD:
rikvandyck 0:e1edd52b1ee2 713 f->state = LS_REQSENT;
rikvandyck 0:e1edd52b1ee2 714 break;
rikvandyck 0:e1edd52b1ee2 715
rikvandyck 0:e1edd52b1ee2 716 case LS_OPENED:
rikvandyck 0:e1edd52b1ee2 717 if (f->callbacks->down) {
rikvandyck 0:e1edd52b1ee2 718 (*f->callbacks->down)(f); /* Inform upper layers */
rikvandyck 0:e1edd52b1ee2 719 }
rikvandyck 0:e1edd52b1ee2 720 fsm_sconfreq(f, 0);
rikvandyck 0:e1edd52b1ee2 721 break;
rikvandyck 0:e1edd52b1ee2 722 default:
rikvandyck 0:e1edd52b1ee2 723 FSMDEBUG(LOG_INFO, ("fsm_rtermack(%s): UNHANDLED state=%d (%s)!!!\n",
rikvandyck 0:e1edd52b1ee2 724 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 725 }
rikvandyck 0:e1edd52b1ee2 726 }
rikvandyck 0:e1edd52b1ee2 727
rikvandyck 0:e1edd52b1ee2 728
rikvandyck 0:e1edd52b1ee2 729 /*
rikvandyck 0:e1edd52b1ee2 730 * fsm_rcoderej - Receive an Code-Reject.
rikvandyck 0:e1edd52b1ee2 731 */
rikvandyck 0:e1edd52b1ee2 732 static void
rikvandyck 0:e1edd52b1ee2 733 fsm_rcoderej(fsm *f, u_char *inp, int len)
rikvandyck 0:e1edd52b1ee2 734 {
rikvandyck 0:e1edd52b1ee2 735 u_char code, id;
rikvandyck 0:e1edd52b1ee2 736
rikvandyck 0:e1edd52b1ee2 737 FSMDEBUG(LOG_INFO, ("fsm_rcoderej(%s): state=%d (%s)\n",
rikvandyck 0:e1edd52b1ee2 738 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 739
rikvandyck 0:e1edd52b1ee2 740 if (len < HEADERLEN) {
rikvandyck 0:e1edd52b1ee2 741 FSMDEBUG(LOG_INFO, ("fsm_rcoderej: Rcvd short Code-Reject packet!\n"));
rikvandyck 0:e1edd52b1ee2 742 return;
rikvandyck 0:e1edd52b1ee2 743 }
rikvandyck 0:e1edd52b1ee2 744 GETCHAR(code, inp);
rikvandyck 0:e1edd52b1ee2 745 GETCHAR(id, inp);
rikvandyck 0:e1edd52b1ee2 746 FSMDEBUG(LOG_WARNING, ("%s: Rcvd Code-Reject for code %d, id %d\n",
rikvandyck 0:e1edd52b1ee2 747 PROTO_NAME(f), code, id));
rikvandyck 0:e1edd52b1ee2 748
rikvandyck 0:e1edd52b1ee2 749 if( f->state == LS_ACKRCVD ) {
rikvandyck 0:e1edd52b1ee2 750 f->state = LS_REQSENT;
rikvandyck 0:e1edd52b1ee2 751 }
rikvandyck 0:e1edd52b1ee2 752 }
rikvandyck 0:e1edd52b1ee2 753
rikvandyck 0:e1edd52b1ee2 754
rikvandyck 0:e1edd52b1ee2 755 /*
rikvandyck 0:e1edd52b1ee2 756 * fsm_protreject - Peer doesn't speak this protocol.
rikvandyck 0:e1edd52b1ee2 757 *
rikvandyck 0:e1edd52b1ee2 758 * Treat this as a catastrophic error (RXJ-).
rikvandyck 0:e1edd52b1ee2 759 */
rikvandyck 0:e1edd52b1ee2 760 void
rikvandyck 0:e1edd52b1ee2 761 fsm_protreject(fsm *f)
rikvandyck 0:e1edd52b1ee2 762 {
rikvandyck 0:e1edd52b1ee2 763 switch( f->state ) {
rikvandyck 0:e1edd52b1ee2 764 case LS_CLOSING:
rikvandyck 0:e1edd52b1ee2 765 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
rikvandyck 0:e1edd52b1ee2 766 /* fall through */
rikvandyck 0:e1edd52b1ee2 767 case LS_CLOSED:
rikvandyck 0:e1edd52b1ee2 768 f->state = LS_CLOSED;
rikvandyck 0:e1edd52b1ee2 769 if( f->callbacks->finished ) {
rikvandyck 0:e1edd52b1ee2 770 (*f->callbacks->finished)(f);
rikvandyck 0:e1edd52b1ee2 771 }
rikvandyck 0:e1edd52b1ee2 772 break;
rikvandyck 0:e1edd52b1ee2 773
rikvandyck 0:e1edd52b1ee2 774 case LS_STOPPING:
rikvandyck 0:e1edd52b1ee2 775 case LS_REQSENT:
rikvandyck 0:e1edd52b1ee2 776 case LS_ACKRCVD:
rikvandyck 0:e1edd52b1ee2 777 case LS_ACKSENT:
rikvandyck 0:e1edd52b1ee2 778 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
rikvandyck 0:e1edd52b1ee2 779 /* fall through */
rikvandyck 0:e1edd52b1ee2 780 case LS_STOPPED:
rikvandyck 0:e1edd52b1ee2 781 f->state = LS_STOPPED;
rikvandyck 0:e1edd52b1ee2 782 if( f->callbacks->finished ) {
rikvandyck 0:e1edd52b1ee2 783 (*f->callbacks->finished)(f);
rikvandyck 0:e1edd52b1ee2 784 }
rikvandyck 0:e1edd52b1ee2 785 break;
rikvandyck 0:e1edd52b1ee2 786
rikvandyck 0:e1edd52b1ee2 787 case LS_OPENED:
rikvandyck 0:e1edd52b1ee2 788 if( f->callbacks->down ) {
rikvandyck 0:e1edd52b1ee2 789 (*f->callbacks->down)(f);
rikvandyck 0:e1edd52b1ee2 790 }
rikvandyck 0:e1edd52b1ee2 791 /* Init restart counter, send Terminate-Request */
rikvandyck 0:e1edd52b1ee2 792 f->retransmits = f->maxtermtransmits;
rikvandyck 0:e1edd52b1ee2 793 fsm_sdata(f, TERMREQ, f->reqid = ++f->id,
rikvandyck 0:e1edd52b1ee2 794 (u_char *) f->term_reason, f->term_reason_len);
rikvandyck 0:e1edd52b1ee2 795 TIMEOUT(fsm_timeout, f, f->timeouttime);
rikvandyck 0:e1edd52b1ee2 796 --f->retransmits;
rikvandyck 0:e1edd52b1ee2 797
rikvandyck 0:e1edd52b1ee2 798 f->state = LS_STOPPING;
rikvandyck 0:e1edd52b1ee2 799 break;
rikvandyck 0:e1edd52b1ee2 800
rikvandyck 0:e1edd52b1ee2 801 default:
rikvandyck 0:e1edd52b1ee2 802 FSMDEBUG(LOG_INFO, ("%s: Protocol-reject event in state %d (%s)!\n",
rikvandyck 0:e1edd52b1ee2 803 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
rikvandyck 0:e1edd52b1ee2 804 }
rikvandyck 0:e1edd52b1ee2 805 }
rikvandyck 0:e1edd52b1ee2 806
rikvandyck 0:e1edd52b1ee2 807
rikvandyck 0:e1edd52b1ee2 808 /*
rikvandyck 0:e1edd52b1ee2 809 * fsm_sconfreq - Send a Configure-Request.
rikvandyck 0:e1edd52b1ee2 810 */
rikvandyck 0:e1edd52b1ee2 811 static void
rikvandyck 0:e1edd52b1ee2 812 fsm_sconfreq(fsm *f, int retransmit)
rikvandyck 0:e1edd52b1ee2 813 {
rikvandyck 0:e1edd52b1ee2 814 u_char *outp;
rikvandyck 0:e1edd52b1ee2 815 int cilen;
rikvandyck 0:e1edd52b1ee2 816
rikvandyck 0:e1edd52b1ee2 817 if( f->state != LS_REQSENT && f->state != LS_ACKRCVD && f->state != LS_ACKSENT ) {
rikvandyck 0:e1edd52b1ee2 818 /* Not currently negotiating - reset options */
rikvandyck 0:e1edd52b1ee2 819 if( f->callbacks->resetci ) {
rikvandyck 0:e1edd52b1ee2 820 (*f->callbacks->resetci)(f);
rikvandyck 0:e1edd52b1ee2 821 }
rikvandyck 0:e1edd52b1ee2 822 f->nakloops = 0;
rikvandyck 0:e1edd52b1ee2 823 }
rikvandyck 0:e1edd52b1ee2 824
rikvandyck 0:e1edd52b1ee2 825 if( !retransmit ) {
rikvandyck 0:e1edd52b1ee2 826 /* New request - reset retransmission counter, use new ID */
rikvandyck 0:e1edd52b1ee2 827 f->retransmits = f->maxconfreqtransmits;
rikvandyck 0:e1edd52b1ee2 828 f->reqid = ++f->id;
rikvandyck 0:e1edd52b1ee2 829 }
rikvandyck 0:e1edd52b1ee2 830
rikvandyck 0:e1edd52b1ee2 831 f->seen_ack = 0;
rikvandyck 0:e1edd52b1ee2 832
rikvandyck 0:e1edd52b1ee2 833 /*
rikvandyck 0:e1edd52b1ee2 834 * Make up the request packet
rikvandyck 0:e1edd52b1ee2 835 */
rikvandyck 0:e1edd52b1ee2 836 outp = outpacket_buf[f->unit] + PPP_HDRLEN + HEADERLEN;
rikvandyck 0:e1edd52b1ee2 837 if( f->callbacks->cilen && f->callbacks->addci ) {
rikvandyck 0:e1edd52b1ee2 838 cilen = (*f->callbacks->cilen)(f);
rikvandyck 0:e1edd52b1ee2 839 if( cilen > peer_mru[f->unit] - (int)HEADERLEN ) {
rikvandyck 0:e1edd52b1ee2 840 cilen = peer_mru[f->unit] - HEADERLEN;
rikvandyck 0:e1edd52b1ee2 841 }
rikvandyck 0:e1edd52b1ee2 842 if (f->callbacks->addci) {
rikvandyck 0:e1edd52b1ee2 843 (*f->callbacks->addci)(f, outp, &cilen);
rikvandyck 0:e1edd52b1ee2 844 }
rikvandyck 0:e1edd52b1ee2 845 } else {
rikvandyck 0:e1edd52b1ee2 846 cilen = 0;
rikvandyck 0:e1edd52b1ee2 847 }
rikvandyck 0:e1edd52b1ee2 848
rikvandyck 0:e1edd52b1ee2 849 /* send the request to our peer */
rikvandyck 0:e1edd52b1ee2 850 fsm_sdata(f, CONFREQ, f->reqid, outp, cilen);
rikvandyck 0:e1edd52b1ee2 851
rikvandyck 0:e1edd52b1ee2 852 /* start the retransmit timer */
rikvandyck 0:e1edd52b1ee2 853 --f->retransmits;
rikvandyck 0:e1edd52b1ee2 854 TIMEOUT(fsm_timeout, f, f->timeouttime);
rikvandyck 0:e1edd52b1ee2 855
rikvandyck 0:e1edd52b1ee2 856 FSMDEBUG(LOG_INFO, ("%s: sending Configure-Request, id %d\n",
rikvandyck 0:e1edd52b1ee2 857 PROTO_NAME(f), f->reqid));
rikvandyck 0:e1edd52b1ee2 858 }
rikvandyck 0:e1edd52b1ee2 859
rikvandyck 0:e1edd52b1ee2 860
rikvandyck 0:e1edd52b1ee2 861 /*
rikvandyck 0:e1edd52b1ee2 862 * fsm_sdata - Send some data.
rikvandyck 0:e1edd52b1ee2 863 *
rikvandyck 0:e1edd52b1ee2 864 * Used for all packets sent to our peer by this module.
rikvandyck 0:e1edd52b1ee2 865 */
rikvandyck 0:e1edd52b1ee2 866 void
rikvandyck 0:e1edd52b1ee2 867 fsm_sdata( fsm *f, u_char code, u_char id, u_char *data, int datalen)
rikvandyck 0:e1edd52b1ee2 868 {
rikvandyck 0:e1edd52b1ee2 869 u_char *outp;
rikvandyck 0:e1edd52b1ee2 870 int outlen;
rikvandyck 0:e1edd52b1ee2 871
rikvandyck 0:e1edd52b1ee2 872 /* Adjust length to be smaller than MTU */
rikvandyck 0:e1edd52b1ee2 873 outp = outpacket_buf[f->unit];
rikvandyck 0:e1edd52b1ee2 874 if (datalen > peer_mru[f->unit] - (int)HEADERLEN) {
rikvandyck 0:e1edd52b1ee2 875 datalen = peer_mru[f->unit] - HEADERLEN;
rikvandyck 0:e1edd52b1ee2 876 }
rikvandyck 0:e1edd52b1ee2 877 if (datalen && data != outp + PPP_HDRLEN + HEADERLEN) {
rikvandyck 0:e1edd52b1ee2 878 BCOPY(data, outp + PPP_HDRLEN + HEADERLEN, datalen);
rikvandyck 0:e1edd52b1ee2 879 }
rikvandyck 0:e1edd52b1ee2 880 outlen = datalen + HEADERLEN;
rikvandyck 0:e1edd52b1ee2 881 MAKEHEADER(outp, f->protocol);
rikvandyck 0:e1edd52b1ee2 882 PUTCHAR(code, outp);
rikvandyck 0:e1edd52b1ee2 883 PUTCHAR(id, outp);
rikvandyck 0:e1edd52b1ee2 884 PUTSHORT(outlen, outp);
rikvandyck 0:e1edd52b1ee2 885 pppWrite(f->unit, outpacket_buf[f->unit], outlen + PPP_HDRLEN);
rikvandyck 0:e1edd52b1ee2 886 FSMDEBUG(LOG_INFO, ("fsm_sdata(%s): Sent code %d,%d,%d.\n",
rikvandyck 0:e1edd52b1ee2 887 PROTO_NAME(f), code, id, outlen));
rikvandyck 0:e1edd52b1ee2 888 }
rikvandyck 0:e1edd52b1ee2 889
rikvandyck 0:e1edd52b1ee2 890 #endif /* PPP_SUPPORT */