Mike Pulice / ublox_C200Test

Integrating the ublox LISA C200 modem

Fork of SprintUSBModemHTTPClientTest by Donatien Garnier

SprintUSBModem/lwip/netif/ppp/fsm.c@5:3f93dd1d4cb3, 2013-09-26 (annotated)

Committer:
sam_grove
Date:
Thu Sep 26 00:44:20 2013 -0500
Revision:
5:3f93dd1d4cb3
Exported program and replaced contents of the repo with the source

to build and debug using keil mdk. Libs NOT upto date are lwip, lwip-sys

and socket. these have newer versions under mbed_official but were starting

from a know working point

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sam_grove 5:3f93dd1d4cb3 1 /*****************************************************************************
sam_grove 5:3f93dd1d4cb3 2 * fsm.c - Network Control Protocol Finite State Machine program file.
sam_grove 5:3f93dd1d4cb3 3 *
sam_grove 5:3f93dd1d4cb3 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
sam_grove 5:3f93dd1d4cb3 5 * portions Copyright (c) 1997 by Global Election Systems Inc.
sam_grove 5:3f93dd1d4cb3 6 *
sam_grove 5:3f93dd1d4cb3 7 * The authors hereby grant permission to use, copy, modify, distribute,
sam_grove 5:3f93dd1d4cb3 8 * and license this software and its documentation for any purpose, provided
sam_grove 5:3f93dd1d4cb3 9 * that existing copyright notices are retained in all copies and that this
sam_grove 5:3f93dd1d4cb3 10 * notice and the following disclaimer are included verbatim in any
sam_grove 5:3f93dd1d4cb3 11 * distributions. No written agreement, license, or royalty fee is required
sam_grove 5:3f93dd1d4cb3 12 * for any of the authorized uses.
sam_grove 5:3f93dd1d4cb3 13 *
sam_grove 5:3f93dd1d4cb3 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
sam_grove 5:3f93dd1d4cb3 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
sam_grove 5:3f93dd1d4cb3 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
sam_grove 5:3f93dd1d4cb3 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
sam_grove 5:3f93dd1d4cb3 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sam_grove 5:3f93dd1d4cb3 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
sam_grove 5:3f93dd1d4cb3 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
sam_grove 5:3f93dd1d4cb3 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
sam_grove 5:3f93dd1d4cb3 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
sam_grove 5:3f93dd1d4cb3 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
sam_grove 5:3f93dd1d4cb3 24 *
sam_grove 5:3f93dd1d4cb3 25 ******************************************************************************
sam_grove 5:3f93dd1d4cb3 26 * REVISION HISTORY
sam_grove 5:3f93dd1d4cb3 27 *
sam_grove 5:3f93dd1d4cb3 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
sam_grove 5:3f93dd1d4cb3 29 * Ported to lwIP.
sam_grove 5:3f93dd1d4cb3 30 * 97-12-01 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
sam_grove 5:3f93dd1d4cb3 31 * Original based on BSD fsm.c.
sam_grove 5:3f93dd1d4cb3 32 *****************************************************************************/
sam_grove 5:3f93dd1d4cb3 33 /*
sam_grove 5:3f93dd1d4cb3 34 * fsm.c - {Link, IP} Control Protocol Finite State Machine.
sam_grove 5:3f93dd1d4cb3 35 *
sam_grove 5:3f93dd1d4cb3 36 * Copyright (c) 1989 Carnegie Mellon University.
sam_grove 5:3f93dd1d4cb3 37 * All rights reserved.
sam_grove 5:3f93dd1d4cb3 38 *
sam_grove 5:3f93dd1d4cb3 39 * Redistribution and use in source and binary forms are permitted
sam_grove 5:3f93dd1d4cb3 40 * provided that the above copyright notice and this paragraph are
sam_grove 5:3f93dd1d4cb3 41 * duplicated in all such forms and that any documentation,
sam_grove 5:3f93dd1d4cb3 42 * advertising materials, and other materials related to such
sam_grove 5:3f93dd1d4cb3 43 * distribution and use acknowledge that the software was developed
sam_grove 5:3f93dd1d4cb3 44 * by Carnegie Mellon University. The name of the
sam_grove 5:3f93dd1d4cb3 45 * University may not be used to endorse or promote products derived
sam_grove 5:3f93dd1d4cb3 46 * from this software without specific prior written permission.
sam_grove 5:3f93dd1d4cb3 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
sam_grove 5:3f93dd1d4cb3 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
sam_grove 5:3f93dd1d4cb3 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
sam_grove 5:3f93dd1d4cb3 50 */
sam_grove 5:3f93dd1d4cb3 51
sam_grove 5:3f93dd1d4cb3 52 /*
sam_grove 5:3f93dd1d4cb3 53 * TODO:
sam_grove 5:3f93dd1d4cb3 54 * Randomize fsm id on link/init.
sam_grove 5:3f93dd1d4cb3 55 * Deal with variable outgoing MTU.
sam_grove 5:3f93dd1d4cb3 56 */
sam_grove 5:3f93dd1d4cb3 57
sam_grove 5:3f93dd1d4cb3 58 #include "lwip/opt.h"
sam_grove 5:3f93dd1d4cb3 59
sam_grove 5:3f93dd1d4cb3 60 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
sam_grove 5:3f93dd1d4cb3 61
sam_grove 5:3f93dd1d4cb3 62 #include "ppp.h"
sam_grove 5:3f93dd1d4cb3 63 #include "pppdebug.h"
sam_grove 5:3f93dd1d4cb3 64
sam_grove 5:3f93dd1d4cb3 65 #include "fsm.h"
sam_grove 5:3f93dd1d4cb3 66
sam_grove 5:3f93dd1d4cb3 67 #include <string.h>
sam_grove 5:3f93dd1d4cb3 68
sam_grove 5:3f93dd1d4cb3 69 #if PPP_DEBUG
sam_grove 5:3f93dd1d4cb3 70 static const char *ppperr_strerr[] = {
sam_grove 5:3f93dd1d4cb3 71 "LS_INITIAL", /* LS_INITIAL 0 */
sam_grove 5:3f93dd1d4cb3 72 "LS_STARTING", /* LS_STARTING 1 */
sam_grove 5:3f93dd1d4cb3 73 "LS_CLOSED", /* LS_CLOSED 2 */
sam_grove 5:3f93dd1d4cb3 74 "LS_STOPPED", /* LS_STOPPED 3 */
sam_grove 5:3f93dd1d4cb3 75 "LS_CLOSING", /* LS_CLOSING 4 */
sam_grove 5:3f93dd1d4cb3 76 "LS_STOPPING", /* LS_STOPPING 5 */
sam_grove 5:3f93dd1d4cb3 77 "LS_REQSENT", /* LS_REQSENT 6 */
sam_grove 5:3f93dd1d4cb3 78 "LS_ACKRCVD", /* LS_ACKRCVD 7 */
sam_grove 5:3f93dd1d4cb3 79 "LS_ACKSENT", /* LS_ACKSENT 8 */
sam_grove 5:3f93dd1d4cb3 80 "LS_OPENED" /* LS_OPENED 9 */
sam_grove 5:3f93dd1d4cb3 81 };
sam_grove 5:3f93dd1d4cb3 82 #endif /* PPP_DEBUG */
sam_grove 5:3f93dd1d4cb3 83
sam_grove 5:3f93dd1d4cb3 84 static void fsm_timeout (void *);
sam_grove 5:3f93dd1d4cb3 85 static void fsm_rconfreq (fsm *, u_char, u_char *, int);
sam_grove 5:3f93dd1d4cb3 86 static void fsm_rconfack (fsm *, int, u_char *, int);
sam_grove 5:3f93dd1d4cb3 87 static void fsm_rconfnakrej (fsm *, int, int, u_char *, int);
sam_grove 5:3f93dd1d4cb3 88 static void fsm_rtermreq (fsm *, int, u_char *, int);
sam_grove 5:3f93dd1d4cb3 89 static void fsm_rtermack (fsm *);
sam_grove 5:3f93dd1d4cb3 90 static void fsm_rcoderej (fsm *, u_char *, int);
sam_grove 5:3f93dd1d4cb3 91 static void fsm_sconfreq (fsm *, int);
sam_grove 5:3f93dd1d4cb3 92
sam_grove 5:3f93dd1d4cb3 93 #define PROTO_NAME(f) ((f)->callbacks->proto_name)
sam_grove 5:3f93dd1d4cb3 94
sam_grove 5:3f93dd1d4cb3 95 int peer_mru[NUM_PPP];
sam_grove 5:3f93dd1d4cb3 96
sam_grove 5:3f93dd1d4cb3 97
sam_grove 5:3f93dd1d4cb3 98 /*
sam_grove 5:3f93dd1d4cb3 99 * fsm_init - Initialize fsm.
sam_grove 5:3f93dd1d4cb3 100 *
sam_grove 5:3f93dd1d4cb3 101 * Initialize fsm state.
sam_grove 5:3f93dd1d4cb3 102 */
sam_grove 5:3f93dd1d4cb3 103 void
sam_grove 5:3f93dd1d4cb3 104 fsm_init(fsm *f)
sam_grove 5:3f93dd1d4cb3 105 {
sam_grove 5:3f93dd1d4cb3 106 f->state = LS_INITIAL;
sam_grove 5:3f93dd1d4cb3 107 f->flags = 0;
sam_grove 5:3f93dd1d4cb3 108 f->id = 0; /* XXX Start with random id? */
sam_grove 5:3f93dd1d4cb3 109 f->timeouttime = FSM_DEFTIMEOUT;
sam_grove 5:3f93dd1d4cb3 110 f->maxconfreqtransmits = FSM_DEFMAXCONFREQS;
sam_grove 5:3f93dd1d4cb3 111 f->maxtermtransmits = FSM_DEFMAXTERMREQS;
sam_grove 5:3f93dd1d4cb3 112 f->maxnakloops = FSM_DEFMAXNAKLOOPS;
sam_grove 5:3f93dd1d4cb3 113 f->term_reason_len = 0;
sam_grove 5:3f93dd1d4cb3 114 }
sam_grove 5:3f93dd1d4cb3 115
sam_grove 5:3f93dd1d4cb3 116
sam_grove 5:3f93dd1d4cb3 117 /*
sam_grove 5:3f93dd1d4cb3 118 * fsm_lowerup - The lower layer is up.
sam_grove 5:3f93dd1d4cb3 119 */
sam_grove 5:3f93dd1d4cb3 120 void
sam_grove 5:3f93dd1d4cb3 121 fsm_lowerup(fsm *f)
sam_grove 5:3f93dd1d4cb3 122 {
sam_grove 5:3f93dd1d4cb3 123 int oldState = f->state;
sam_grove 5:3f93dd1d4cb3 124
sam_grove 5:3f93dd1d4cb3 125 LWIP_UNUSED_ARG(oldState);
sam_grove 5:3f93dd1d4cb3 126
sam_grove 5:3f93dd1d4cb3 127 switch( f->state ) {
sam_grove 5:3f93dd1d4cb3 128 case LS_INITIAL:
sam_grove 5:3f93dd1d4cb3 129 f->state = LS_CLOSED;
sam_grove 5:3f93dd1d4cb3 130 break;
sam_grove 5:3f93dd1d4cb3 131
sam_grove 5:3f93dd1d4cb3 132 case LS_STARTING:
sam_grove 5:3f93dd1d4cb3 133 if( f->flags & OPT_SILENT ) {
sam_grove 5:3f93dd1d4cb3 134 f->state = LS_STOPPED;
sam_grove 5:3f93dd1d4cb3 135 } else {
sam_grove 5:3f93dd1d4cb3 136 /* Send an initial configure-request */
sam_grove 5:3f93dd1d4cb3 137 fsm_sconfreq(f, 0);
sam_grove 5:3f93dd1d4cb3 138 f->state = LS_REQSENT;
sam_grove 5:3f93dd1d4cb3 139 }
sam_grove 5:3f93dd1d4cb3 140 break;
sam_grove 5:3f93dd1d4cb3 141
sam_grove 5:3f93dd1d4cb3 142 default:
sam_grove 5:3f93dd1d4cb3 143 FSMDEBUG(LOG_INFO, ("%s: Up event in state %d (%s)!\n",
sam_grove 5:3f93dd1d4cb3 144 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 145 }
sam_grove 5:3f93dd1d4cb3 146
sam_grove 5:3f93dd1d4cb3 147 FSMDEBUG(LOG_INFO, ("%s: lowerup state %d (%s) -> %d (%s)\n",
sam_grove 5:3f93dd1d4cb3 148 PROTO_NAME(f), oldState, ppperr_strerr[oldState], f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 149 }
sam_grove 5:3f93dd1d4cb3 150
sam_grove 5:3f93dd1d4cb3 151
sam_grove 5:3f93dd1d4cb3 152 /*
sam_grove 5:3f93dd1d4cb3 153 * fsm_lowerdown - The lower layer is down.
sam_grove 5:3f93dd1d4cb3 154 *
sam_grove 5:3f93dd1d4cb3 155 * Cancel all timeouts and inform upper layers.
sam_grove 5:3f93dd1d4cb3 156 */
sam_grove 5:3f93dd1d4cb3 157 void
sam_grove 5:3f93dd1d4cb3 158 fsm_lowerdown(fsm *f)
sam_grove 5:3f93dd1d4cb3 159 {
sam_grove 5:3f93dd1d4cb3 160 int oldState = f->state;
sam_grove 5:3f93dd1d4cb3 161
sam_grove 5:3f93dd1d4cb3 162 LWIP_UNUSED_ARG(oldState);
sam_grove 5:3f93dd1d4cb3 163
sam_grove 5:3f93dd1d4cb3 164 switch( f->state ) {
sam_grove 5:3f93dd1d4cb3 165 case LS_CLOSED:
sam_grove 5:3f93dd1d4cb3 166 f->state = LS_INITIAL;
sam_grove 5:3f93dd1d4cb3 167 break;
sam_grove 5:3f93dd1d4cb3 168
sam_grove 5:3f93dd1d4cb3 169 case LS_STOPPED:
sam_grove 5:3f93dd1d4cb3 170 f->state = LS_STARTING;
sam_grove 5:3f93dd1d4cb3 171 if( f->callbacks->starting ) {
sam_grove 5:3f93dd1d4cb3 172 (*f->callbacks->starting)(f);
sam_grove 5:3f93dd1d4cb3 173 }
sam_grove 5:3f93dd1d4cb3 174 break;
sam_grove 5:3f93dd1d4cb3 175
sam_grove 5:3f93dd1d4cb3 176 case LS_CLOSING:
sam_grove 5:3f93dd1d4cb3 177 f->state = LS_INITIAL;
sam_grove 5:3f93dd1d4cb3 178 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
sam_grove 5:3f93dd1d4cb3 179 break;
sam_grove 5:3f93dd1d4cb3 180
sam_grove 5:3f93dd1d4cb3 181 case LS_STOPPING:
sam_grove 5:3f93dd1d4cb3 182 case LS_REQSENT:
sam_grove 5:3f93dd1d4cb3 183 case LS_ACKRCVD:
sam_grove 5:3f93dd1d4cb3 184 case LS_ACKSENT:
sam_grove 5:3f93dd1d4cb3 185 f->state = LS_STARTING;
sam_grove 5:3f93dd1d4cb3 186 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
sam_grove 5:3f93dd1d4cb3 187 break;
sam_grove 5:3f93dd1d4cb3 188
sam_grove 5:3f93dd1d4cb3 189 case LS_OPENED:
sam_grove 5:3f93dd1d4cb3 190 if( f->callbacks->down ) {
sam_grove 5:3f93dd1d4cb3 191 (*f->callbacks->down)(f);
sam_grove 5:3f93dd1d4cb3 192 }
sam_grove 5:3f93dd1d4cb3 193 f->state = LS_STARTING;
sam_grove 5:3f93dd1d4cb3 194 break;
sam_grove 5:3f93dd1d4cb3 195
sam_grove 5:3f93dd1d4cb3 196 default:
sam_grove 5:3f93dd1d4cb3 197 FSMDEBUG(LOG_INFO, ("%s: Down event in state %d (%s)!\n",
sam_grove 5:3f93dd1d4cb3 198 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 199 }
sam_grove 5:3f93dd1d4cb3 200
sam_grove 5:3f93dd1d4cb3 201 FSMDEBUG(LOG_INFO, ("%s: lowerdown state %d (%s) -> %d (%s)\n",
sam_grove 5:3f93dd1d4cb3 202 PROTO_NAME(f), oldState, ppperr_strerr[oldState], f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 203 }
sam_grove 5:3f93dd1d4cb3 204
sam_grove 5:3f93dd1d4cb3 205
sam_grove 5:3f93dd1d4cb3 206 /*
sam_grove 5:3f93dd1d4cb3 207 * fsm_open - Link is allowed to come up.
sam_grove 5:3f93dd1d4cb3 208 */
sam_grove 5:3f93dd1d4cb3 209 void
sam_grove 5:3f93dd1d4cb3 210 fsm_open(fsm *f)
sam_grove 5:3f93dd1d4cb3 211 {
sam_grove 5:3f93dd1d4cb3 212 int oldState = f->state;
sam_grove 5:3f93dd1d4cb3 213
sam_grove 5:3f93dd1d4cb3 214 LWIP_UNUSED_ARG(oldState);
sam_grove 5:3f93dd1d4cb3 215
sam_grove 5:3f93dd1d4cb3 216 switch( f->state ) {
sam_grove 5:3f93dd1d4cb3 217 case LS_INITIAL:
sam_grove 5:3f93dd1d4cb3 218 f->state = LS_STARTING;
sam_grove 5:3f93dd1d4cb3 219 if( f->callbacks->starting ) {
sam_grove 5:3f93dd1d4cb3 220 (*f->callbacks->starting)(f);
sam_grove 5:3f93dd1d4cb3 221 }
sam_grove 5:3f93dd1d4cb3 222 break;
sam_grove 5:3f93dd1d4cb3 223
sam_grove 5:3f93dd1d4cb3 224 case LS_CLOSED:
sam_grove 5:3f93dd1d4cb3 225 if( f->flags & OPT_SILENT ) {
sam_grove 5:3f93dd1d4cb3 226 f->state = LS_STOPPED;
sam_grove 5:3f93dd1d4cb3 227 } else {
sam_grove 5:3f93dd1d4cb3 228 /* Send an initial configure-request */
sam_grove 5:3f93dd1d4cb3 229 fsm_sconfreq(f, 0);
sam_grove 5:3f93dd1d4cb3 230 f->state = LS_REQSENT;
sam_grove 5:3f93dd1d4cb3 231 }
sam_grove 5:3f93dd1d4cb3 232 break;
sam_grove 5:3f93dd1d4cb3 233
sam_grove 5:3f93dd1d4cb3 234 case LS_CLOSING:
sam_grove 5:3f93dd1d4cb3 235 f->state = LS_STOPPING;
sam_grove 5:3f93dd1d4cb3 236 /* fall through */
sam_grove 5:3f93dd1d4cb3 237 case LS_STOPPED:
sam_grove 5:3f93dd1d4cb3 238 case LS_OPENED:
sam_grove 5:3f93dd1d4cb3 239 if( f->flags & OPT_RESTART ) {
sam_grove 5:3f93dd1d4cb3 240 fsm_lowerdown(f);
sam_grove 5:3f93dd1d4cb3 241 fsm_lowerup(f);
sam_grove 5:3f93dd1d4cb3 242 }
sam_grove 5:3f93dd1d4cb3 243 break;
sam_grove 5:3f93dd1d4cb3 244 }
sam_grove 5:3f93dd1d4cb3 245
sam_grove 5:3f93dd1d4cb3 246 FSMDEBUG(LOG_INFO, ("%s: open state %d (%s) -> %d (%s)\n",
sam_grove 5:3f93dd1d4cb3 247 PROTO_NAME(f), oldState, ppperr_strerr[oldState], f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 248 }
sam_grove 5:3f93dd1d4cb3 249
sam_grove 5:3f93dd1d4cb3 250 #if 0 /* backport pppd 2.4.4b1; */
sam_grove 5:3f93dd1d4cb3 251 /*
sam_grove 5:3f93dd1d4cb3 252 * terminate_layer - Start process of shutting down the FSM
sam_grove 5:3f93dd1d4cb3 253 *
sam_grove 5:3f93dd1d4cb3 254 * Cancel any timeout running, notify upper layers we're done, and
sam_grove 5:3f93dd1d4cb3 255 * send a terminate-request message as configured.
sam_grove 5:3f93dd1d4cb3 256 */
sam_grove 5:3f93dd1d4cb3 257 static void
sam_grove 5:3f93dd1d4cb3 258 terminate_layer(fsm *f, int nextstate)
sam_grove 5:3f93dd1d4cb3 259 {
sam_grove 5:3f93dd1d4cb3 260 /* @todo */
sam_grove 5:3f93dd1d4cb3 261 }
sam_grove 5:3f93dd1d4cb3 262 #endif
sam_grove 5:3f93dd1d4cb3 263
sam_grove 5:3f93dd1d4cb3 264 /*
sam_grove 5:3f93dd1d4cb3 265 * fsm_close - Start closing connection.
sam_grove 5:3f93dd1d4cb3 266 *
sam_grove 5:3f93dd1d4cb3 267 * Cancel timeouts and either initiate close or possibly go directly to
sam_grove 5:3f93dd1d4cb3 268 * the LS_CLOSED state.
sam_grove 5:3f93dd1d4cb3 269 */
sam_grove 5:3f93dd1d4cb3 270 void
sam_grove 5:3f93dd1d4cb3 271 fsm_close(fsm *f, char *reason)
sam_grove 5:3f93dd1d4cb3 272 {
sam_grove 5:3f93dd1d4cb3 273 int oldState = f->state;
sam_grove 5:3f93dd1d4cb3 274
sam_grove 5:3f93dd1d4cb3 275 LWIP_UNUSED_ARG(oldState);
sam_grove 5:3f93dd1d4cb3 276
sam_grove 5:3f93dd1d4cb3 277 f->term_reason = reason;
sam_grove 5:3f93dd1d4cb3 278 f->term_reason_len = (reason == NULL ? 0 : (int)strlen(reason));
sam_grove 5:3f93dd1d4cb3 279 switch( f->state ) {
sam_grove 5:3f93dd1d4cb3 280 case LS_STARTING:
sam_grove 5:3f93dd1d4cb3 281 f->state = LS_INITIAL;
sam_grove 5:3f93dd1d4cb3 282 break;
sam_grove 5:3f93dd1d4cb3 283 case LS_STOPPED:
sam_grove 5:3f93dd1d4cb3 284 f->state = LS_CLOSED;
sam_grove 5:3f93dd1d4cb3 285 break;
sam_grove 5:3f93dd1d4cb3 286 case LS_STOPPING:
sam_grove 5:3f93dd1d4cb3 287 f->state = LS_CLOSING;
sam_grove 5:3f93dd1d4cb3 288 break;
sam_grove 5:3f93dd1d4cb3 289
sam_grove 5:3f93dd1d4cb3 290 case LS_REQSENT:
sam_grove 5:3f93dd1d4cb3 291 case LS_ACKRCVD:
sam_grove 5:3f93dd1d4cb3 292 case LS_ACKSENT:
sam_grove 5:3f93dd1d4cb3 293 case LS_OPENED:
sam_grove 5:3f93dd1d4cb3 294 if( f->state != LS_OPENED ) {
sam_grove 5:3f93dd1d4cb3 295 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
sam_grove 5:3f93dd1d4cb3 296 } else if( f->callbacks->down ) {
sam_grove 5:3f93dd1d4cb3 297 (*f->callbacks->down)(f); /* Inform upper layers we're down */
sam_grove 5:3f93dd1d4cb3 298 }
sam_grove 5:3f93dd1d4cb3 299 /* Init restart counter, send Terminate-Request */
sam_grove 5:3f93dd1d4cb3 300 f->retransmits = f->maxtermtransmits;
sam_grove 5:3f93dd1d4cb3 301 fsm_sdata(f, TERMREQ, f->reqid = ++f->id,
sam_grove 5:3f93dd1d4cb3 302 (u_char *) f->term_reason, f->term_reason_len);
sam_grove 5:3f93dd1d4cb3 303 TIMEOUT(fsm_timeout, f, f->timeouttime);
sam_grove 5:3f93dd1d4cb3 304 --f->retransmits;
sam_grove 5:3f93dd1d4cb3 305
sam_grove 5:3f93dd1d4cb3 306 f->state = LS_CLOSING;
sam_grove 5:3f93dd1d4cb3 307 break;
sam_grove 5:3f93dd1d4cb3 308 }
sam_grove 5:3f93dd1d4cb3 309
sam_grove 5:3f93dd1d4cb3 310 FSMDEBUG(LOG_INFO, ("%s: close reason=%s state %d (%s) -> %d (%s)\n",
sam_grove 5:3f93dd1d4cb3 311 PROTO_NAME(f), reason, oldState, ppperr_strerr[oldState], f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 312 }
sam_grove 5:3f93dd1d4cb3 313
sam_grove 5:3f93dd1d4cb3 314
sam_grove 5:3f93dd1d4cb3 315 /*
sam_grove 5:3f93dd1d4cb3 316 * fsm_timeout - Timeout expired.
sam_grove 5:3f93dd1d4cb3 317 */
sam_grove 5:3f93dd1d4cb3 318 static void
sam_grove 5:3f93dd1d4cb3 319 fsm_timeout(void *arg)
sam_grove 5:3f93dd1d4cb3 320 {
sam_grove 5:3f93dd1d4cb3 321 fsm *f = (fsm *) arg;
sam_grove 5:3f93dd1d4cb3 322
sam_grove 5:3f93dd1d4cb3 323 switch (f->state) {
sam_grove 5:3f93dd1d4cb3 324 case LS_CLOSING:
sam_grove 5:3f93dd1d4cb3 325 case LS_STOPPING:
sam_grove 5:3f93dd1d4cb3 326 if( f->retransmits <= 0 ) {
sam_grove 5:3f93dd1d4cb3 327 FSMDEBUG(LOG_WARNING, ("%s: timeout sending Terminate-Request state=%d (%s)\n",
sam_grove 5:3f93dd1d4cb3 328 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 329 /*
sam_grove 5:3f93dd1d4cb3 330 * We've waited for an ack long enough. Peer probably heard us.
sam_grove 5:3f93dd1d4cb3 331 */
sam_grove 5:3f93dd1d4cb3 332 f->state = (f->state == LS_CLOSING)? LS_CLOSED: LS_STOPPED;
sam_grove 5:3f93dd1d4cb3 333 if( f->callbacks->finished ) {
sam_grove 5:3f93dd1d4cb3 334 (*f->callbacks->finished)(f);
sam_grove 5:3f93dd1d4cb3 335 }
sam_grove 5:3f93dd1d4cb3 336 } else {
sam_grove 5:3f93dd1d4cb3 337 FSMDEBUG(LOG_WARNING, ("%s: timeout resending Terminate-Requests state=%d (%s)\n",
sam_grove 5:3f93dd1d4cb3 338 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 339 /* Send Terminate-Request */
sam_grove 5:3f93dd1d4cb3 340 fsm_sdata(f, TERMREQ, f->reqid = ++f->id,
sam_grove 5:3f93dd1d4cb3 341 (u_char *) f->term_reason, f->term_reason_len);
sam_grove 5:3f93dd1d4cb3 342 TIMEOUT(fsm_timeout, f, f->timeouttime);
sam_grove 5:3f93dd1d4cb3 343 --f->retransmits;
sam_grove 5:3f93dd1d4cb3 344 }
sam_grove 5:3f93dd1d4cb3 345 break;
sam_grove 5:3f93dd1d4cb3 346
sam_grove 5:3f93dd1d4cb3 347 case LS_REQSENT:
sam_grove 5:3f93dd1d4cb3 348 case LS_ACKRCVD:
sam_grove 5:3f93dd1d4cb3 349 case LS_ACKSENT:
sam_grove 5:3f93dd1d4cb3 350 if (f->retransmits <= 0) {
sam_grove 5:3f93dd1d4cb3 351 FSMDEBUG(LOG_WARNING, ("%s: timeout sending Config-Requests state=%d (%s)\n",
sam_grove 5:3f93dd1d4cb3 352 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 353 f->state = LS_STOPPED;
sam_grove 5:3f93dd1d4cb3 354 if( (f->flags & OPT_PASSIVE) == 0 && f->callbacks->finished ) {
sam_grove 5:3f93dd1d4cb3 355 (*f->callbacks->finished)(f);
sam_grove 5:3f93dd1d4cb3 356 }
sam_grove 5:3f93dd1d4cb3 357 } else {
sam_grove 5:3f93dd1d4cb3 358 FSMDEBUG(LOG_WARNING, ("%s: timeout resending Config-Request state=%d (%s)\n",
sam_grove 5:3f93dd1d4cb3 359 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 360 /* Retransmit the configure-request */
sam_grove 5:3f93dd1d4cb3 361 if (f->callbacks->retransmit) {
sam_grove 5:3f93dd1d4cb3 362 (*f->callbacks->retransmit)(f);
sam_grove 5:3f93dd1d4cb3 363 }
sam_grove 5:3f93dd1d4cb3 364 fsm_sconfreq(f, 1); /* Re-send Configure-Request */
sam_grove 5:3f93dd1d4cb3 365 if( f->state == LS_ACKRCVD ) {
sam_grove 5:3f93dd1d4cb3 366 f->state = LS_REQSENT;
sam_grove 5:3f93dd1d4cb3 367 }
sam_grove 5:3f93dd1d4cb3 368 }
sam_grove 5:3f93dd1d4cb3 369 break;
sam_grove 5:3f93dd1d4cb3 370
sam_grove 5:3f93dd1d4cb3 371 default:
sam_grove 5:3f93dd1d4cb3 372 FSMDEBUG(LOG_INFO, ("%s: UNHANDLED timeout event in state %d (%s)!\n",
sam_grove 5:3f93dd1d4cb3 373 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 374 }
sam_grove 5:3f93dd1d4cb3 375 }
sam_grove 5:3f93dd1d4cb3 376
sam_grove 5:3f93dd1d4cb3 377
sam_grove 5:3f93dd1d4cb3 378 /*
sam_grove 5:3f93dd1d4cb3 379 * fsm_input - Input packet.
sam_grove 5:3f93dd1d4cb3 380 */
sam_grove 5:3f93dd1d4cb3 381 void
sam_grove 5:3f93dd1d4cb3 382 fsm_input(fsm *f, u_char *inpacket, int l)
sam_grove 5:3f93dd1d4cb3 383 {
sam_grove 5:3f93dd1d4cb3 384 u_char *inp = inpacket;
sam_grove 5:3f93dd1d4cb3 385 u_char code, id;
sam_grove 5:3f93dd1d4cb3 386 int len;
sam_grove 5:3f93dd1d4cb3 387
sam_grove 5:3f93dd1d4cb3 388 /*
sam_grove 5:3f93dd1d4cb3 389 * Parse header (code, id and length).
sam_grove 5:3f93dd1d4cb3 390 * If packet too short, drop it.
sam_grove 5:3f93dd1d4cb3 391 */
sam_grove 5:3f93dd1d4cb3 392 if (l < HEADERLEN) {
sam_grove 5:3f93dd1d4cb3 393 FSMDEBUG(LOG_WARNING, ("fsm_input(%x): Rcvd short header.\n",
sam_grove 5:3f93dd1d4cb3 394 f->protocol));
sam_grove 5:3f93dd1d4cb3 395 return;
sam_grove 5:3f93dd1d4cb3 396 }
sam_grove 5:3f93dd1d4cb3 397 GETCHAR(code, inp);
sam_grove 5:3f93dd1d4cb3 398 GETCHAR(id, inp);
sam_grove 5:3f93dd1d4cb3 399 GETSHORT(len, inp);
sam_grove 5:3f93dd1d4cb3 400 if (len < HEADERLEN) {
sam_grove 5:3f93dd1d4cb3 401 FSMDEBUG(LOG_INFO, ("fsm_input(%x): Rcvd illegal length.\n",
sam_grove 5:3f93dd1d4cb3 402 f->protocol));
sam_grove 5:3f93dd1d4cb3 403 return;
sam_grove 5:3f93dd1d4cb3 404 }
sam_grove 5:3f93dd1d4cb3 405 if (len > l) {
sam_grove 5:3f93dd1d4cb3 406 FSMDEBUG(LOG_INFO, ("fsm_input(%x): Rcvd short packet.\n",
sam_grove 5:3f93dd1d4cb3 407 f->protocol));
sam_grove 5:3f93dd1d4cb3 408 return;
sam_grove 5:3f93dd1d4cb3 409 }
sam_grove 5:3f93dd1d4cb3 410 len -= HEADERLEN; /* subtract header length */
sam_grove 5:3f93dd1d4cb3 411
sam_grove 5:3f93dd1d4cb3 412 if( f->state == LS_INITIAL || f->state == LS_STARTING ) {
sam_grove 5:3f93dd1d4cb3 413 FSMDEBUG(LOG_INFO, ("fsm_input(%x): Rcvd packet in state %d (%s).\n",
sam_grove 5:3f93dd1d4cb3 414 f->protocol, f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 415 return;
sam_grove 5:3f93dd1d4cb3 416 }
sam_grove 5:3f93dd1d4cb3 417 FSMDEBUG(LOG_INFO, ("fsm_input(%s):%d,%d,%d\n", PROTO_NAME(f), code, id, l));
sam_grove 5:3f93dd1d4cb3 418 /*
sam_grove 5:3f93dd1d4cb3 419 * Action depends on code.
sam_grove 5:3f93dd1d4cb3 420 */
sam_grove 5:3f93dd1d4cb3 421 switch (code) {
sam_grove 5:3f93dd1d4cb3 422 case CONFREQ:
sam_grove 5:3f93dd1d4cb3 423 fsm_rconfreq(f, id, inp, len);
sam_grove 5:3f93dd1d4cb3 424 break;
sam_grove 5:3f93dd1d4cb3 425
sam_grove 5:3f93dd1d4cb3 426 case CONFACK:
sam_grove 5:3f93dd1d4cb3 427 fsm_rconfack(f, id, inp, len);
sam_grove 5:3f93dd1d4cb3 428 break;
sam_grove 5:3f93dd1d4cb3 429
sam_grove 5:3f93dd1d4cb3 430 case CONFNAK:
sam_grove 5:3f93dd1d4cb3 431 case CONFREJ:
sam_grove 5:3f93dd1d4cb3 432 fsm_rconfnakrej(f, code, id, inp, len);
sam_grove 5:3f93dd1d4cb3 433 break;
sam_grove 5:3f93dd1d4cb3 434
sam_grove 5:3f93dd1d4cb3 435 case TERMREQ:
sam_grove 5:3f93dd1d4cb3 436 fsm_rtermreq(f, id, inp, len);
sam_grove 5:3f93dd1d4cb3 437 break;
sam_grove 5:3f93dd1d4cb3 438
sam_grove 5:3f93dd1d4cb3 439 case TERMACK:
sam_grove 5:3f93dd1d4cb3 440 fsm_rtermack(f);
sam_grove 5:3f93dd1d4cb3 441 break;
sam_grove 5:3f93dd1d4cb3 442
sam_grove 5:3f93dd1d4cb3 443 case CODEREJ:
sam_grove 5:3f93dd1d4cb3 444 fsm_rcoderej(f, inp, len);
sam_grove 5:3f93dd1d4cb3 445 break;
sam_grove 5:3f93dd1d4cb3 446
sam_grove 5:3f93dd1d4cb3 447 default:
sam_grove 5:3f93dd1d4cb3 448 FSMDEBUG(LOG_INFO, ("fsm_input(%s): default: \n", PROTO_NAME(f)));
sam_grove 5:3f93dd1d4cb3 449 if( !f->callbacks->extcode ||
sam_grove 5:3f93dd1d4cb3 450 !(*f->callbacks->extcode)(f, code, id, inp, len) ) {
sam_grove 5:3f93dd1d4cb3 451 fsm_sdata(f, CODEREJ, ++f->id, inpacket, len + HEADERLEN);
sam_grove 5:3f93dd1d4cb3 452 }
sam_grove 5:3f93dd1d4cb3 453 break;
sam_grove 5:3f93dd1d4cb3 454 }
sam_grove 5:3f93dd1d4cb3 455 }
sam_grove 5:3f93dd1d4cb3 456
sam_grove 5:3f93dd1d4cb3 457
sam_grove 5:3f93dd1d4cb3 458 /*
sam_grove 5:3f93dd1d4cb3 459 * fsm_rconfreq - Receive Configure-Request.
sam_grove 5:3f93dd1d4cb3 460 */
sam_grove 5:3f93dd1d4cb3 461 static void
sam_grove 5:3f93dd1d4cb3 462 fsm_rconfreq(fsm *f, u_char id, u_char *inp, int len)
sam_grove 5:3f93dd1d4cb3 463 {
sam_grove 5:3f93dd1d4cb3 464 int code, reject_if_disagree;
sam_grove 5:3f93dd1d4cb3 465
sam_grove 5:3f93dd1d4cb3 466 FSMDEBUG(LOG_INFO, ("fsm_rconfreq(%s): Rcvd id %d state=%d (%s)\n",
sam_grove 5:3f93dd1d4cb3 467 PROTO_NAME(f), id, f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 468 switch( f->state ) {
sam_grove 5:3f93dd1d4cb3 469 case LS_CLOSED:
sam_grove 5:3f93dd1d4cb3 470 /* Go away, we're closed */
sam_grove 5:3f93dd1d4cb3 471 fsm_sdata(f, TERMACK, id, NULL, 0);
sam_grove 5:3f93dd1d4cb3 472 return;
sam_grove 5:3f93dd1d4cb3 473 case LS_CLOSING:
sam_grove 5:3f93dd1d4cb3 474 case LS_STOPPING:
sam_grove 5:3f93dd1d4cb3 475 return;
sam_grove 5:3f93dd1d4cb3 476
sam_grove 5:3f93dd1d4cb3 477 case LS_OPENED:
sam_grove 5:3f93dd1d4cb3 478 /* Go down and restart negotiation */
sam_grove 5:3f93dd1d4cb3 479 if( f->callbacks->down ) {
sam_grove 5:3f93dd1d4cb3 480 (*f->callbacks->down)(f); /* Inform upper layers */
sam_grove 5:3f93dd1d4cb3 481 }
sam_grove 5:3f93dd1d4cb3 482 fsm_sconfreq(f, 0); /* Send initial Configure-Request */
sam_grove 5:3f93dd1d4cb3 483 break;
sam_grove 5:3f93dd1d4cb3 484
sam_grove 5:3f93dd1d4cb3 485 case LS_STOPPED:
sam_grove 5:3f93dd1d4cb3 486 /* Negotiation started by our peer */
sam_grove 5:3f93dd1d4cb3 487 fsm_sconfreq(f, 0); /* Send initial Configure-Request */
sam_grove 5:3f93dd1d4cb3 488 f->state = LS_REQSENT;
sam_grove 5:3f93dd1d4cb3 489 break;
sam_grove 5:3f93dd1d4cb3 490 }
sam_grove 5:3f93dd1d4cb3 491
sam_grove 5:3f93dd1d4cb3 492 /*
sam_grove 5:3f93dd1d4cb3 493 * Pass the requested configuration options
sam_grove 5:3f93dd1d4cb3 494 * to protocol-specific code for checking.
sam_grove 5:3f93dd1d4cb3 495 */
sam_grove 5:3f93dd1d4cb3 496 if (f->callbacks->reqci) { /* Check CI */
sam_grove 5:3f93dd1d4cb3 497 reject_if_disagree = (f->nakloops >= f->maxnakloops);
sam_grove 5:3f93dd1d4cb3 498 code = (*f->callbacks->reqci)(f, inp, &len, reject_if_disagree);
sam_grove 5:3f93dd1d4cb3 499 } else if (len) {
sam_grove 5:3f93dd1d4cb3 500 code = CONFREJ; /* Reject all CI */
sam_grove 5:3f93dd1d4cb3 501 } else {
sam_grove 5:3f93dd1d4cb3 502 code = CONFACK;
sam_grove 5:3f93dd1d4cb3 503 }
sam_grove 5:3f93dd1d4cb3 504
sam_grove 5:3f93dd1d4cb3 505 /* send the Ack, Nak or Rej to the peer */
sam_grove 5:3f93dd1d4cb3 506 fsm_sdata(f, (u_char)code, id, inp, len);
sam_grove 5:3f93dd1d4cb3 507
sam_grove 5:3f93dd1d4cb3 508 if (code == CONFACK) {
sam_grove 5:3f93dd1d4cb3 509 if (f->state == LS_ACKRCVD) {
sam_grove 5:3f93dd1d4cb3 510 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
sam_grove 5:3f93dd1d4cb3 511 f->state = LS_OPENED;
sam_grove 5:3f93dd1d4cb3 512 if (f->callbacks->up) {
sam_grove 5:3f93dd1d4cb3 513 (*f->callbacks->up)(f); /* Inform upper layers */
sam_grove 5:3f93dd1d4cb3 514 }
sam_grove 5:3f93dd1d4cb3 515 } else {
sam_grove 5:3f93dd1d4cb3 516 f->state = LS_ACKSENT;
sam_grove 5:3f93dd1d4cb3 517 }
sam_grove 5:3f93dd1d4cb3 518 f->nakloops = 0;
sam_grove 5:3f93dd1d4cb3 519 } else {
sam_grove 5:3f93dd1d4cb3 520 /* we sent CONFACK or CONFREJ */
sam_grove 5:3f93dd1d4cb3 521 if (f->state != LS_ACKRCVD) {
sam_grove 5:3f93dd1d4cb3 522 f->state = LS_REQSENT;
sam_grove 5:3f93dd1d4cb3 523 }
sam_grove 5:3f93dd1d4cb3 524 if( code == CONFNAK ) {
sam_grove 5:3f93dd1d4cb3 525 ++f->nakloops;
sam_grove 5:3f93dd1d4cb3 526 }
sam_grove 5:3f93dd1d4cb3 527 }
sam_grove 5:3f93dd1d4cb3 528 }
sam_grove 5:3f93dd1d4cb3 529
sam_grove 5:3f93dd1d4cb3 530
sam_grove 5:3f93dd1d4cb3 531 /*
sam_grove 5:3f93dd1d4cb3 532 * fsm_rconfack - Receive Configure-Ack.
sam_grove 5:3f93dd1d4cb3 533 */
sam_grove 5:3f93dd1d4cb3 534 static void
sam_grove 5:3f93dd1d4cb3 535 fsm_rconfack(fsm *f, int id, u_char *inp, int len)
sam_grove 5:3f93dd1d4cb3 536 {
sam_grove 5:3f93dd1d4cb3 537 FSMDEBUG(LOG_INFO, ("fsm_rconfack(%s): Rcvd id %d state=%d (%s)\n",
sam_grove 5:3f93dd1d4cb3 538 PROTO_NAME(f), id, f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 539
sam_grove 5:3f93dd1d4cb3 540 if (id != f->reqid || f->seen_ack) { /* Expected id? */
sam_grove 5:3f93dd1d4cb3 541 return; /* Nope, toss... */
sam_grove 5:3f93dd1d4cb3 542 }
sam_grove 5:3f93dd1d4cb3 543 if( !(f->callbacks->ackci? (*f->callbacks->ackci)(f, inp, len): (len == 0)) ) {
sam_grove 5:3f93dd1d4cb3 544 /* Ack is bad - ignore it */
sam_grove 5:3f93dd1d4cb3 545 FSMDEBUG(LOG_INFO, ("%s: received bad Ack (length %d)\n",
sam_grove 5:3f93dd1d4cb3 546 PROTO_NAME(f), len));
sam_grove 5:3f93dd1d4cb3 547 return;
sam_grove 5:3f93dd1d4cb3 548 }
sam_grove 5:3f93dd1d4cb3 549 f->seen_ack = 1;
sam_grove 5:3f93dd1d4cb3 550
sam_grove 5:3f93dd1d4cb3 551 switch (f->state) {
sam_grove 5:3f93dd1d4cb3 552 case LS_CLOSED:
sam_grove 5:3f93dd1d4cb3 553 case LS_STOPPED:
sam_grove 5:3f93dd1d4cb3 554 fsm_sdata(f, TERMACK, (u_char)id, NULL, 0);
sam_grove 5:3f93dd1d4cb3 555 break;
sam_grove 5:3f93dd1d4cb3 556
sam_grove 5:3f93dd1d4cb3 557 case LS_REQSENT:
sam_grove 5:3f93dd1d4cb3 558 f->state = LS_ACKRCVD;
sam_grove 5:3f93dd1d4cb3 559 f->retransmits = f->maxconfreqtransmits;
sam_grove 5:3f93dd1d4cb3 560 break;
sam_grove 5:3f93dd1d4cb3 561
sam_grove 5:3f93dd1d4cb3 562 case LS_ACKRCVD:
sam_grove 5:3f93dd1d4cb3 563 /* Huh? an extra valid Ack? oh well... */
sam_grove 5:3f93dd1d4cb3 564 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
sam_grove 5:3f93dd1d4cb3 565 fsm_sconfreq(f, 0);
sam_grove 5:3f93dd1d4cb3 566 f->state = LS_REQSENT;
sam_grove 5:3f93dd1d4cb3 567 break;
sam_grove 5:3f93dd1d4cb3 568
sam_grove 5:3f93dd1d4cb3 569 case LS_ACKSENT:
sam_grove 5:3f93dd1d4cb3 570 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
sam_grove 5:3f93dd1d4cb3 571 f->state = LS_OPENED;
sam_grove 5:3f93dd1d4cb3 572 f->retransmits = f->maxconfreqtransmits;
sam_grove 5:3f93dd1d4cb3 573 if (f->callbacks->up) {
sam_grove 5:3f93dd1d4cb3 574 (*f->callbacks->up)(f); /* Inform upper layers */
sam_grove 5:3f93dd1d4cb3 575 }
sam_grove 5:3f93dd1d4cb3 576 break;
sam_grove 5:3f93dd1d4cb3 577
sam_grove 5:3f93dd1d4cb3 578 case LS_OPENED:
sam_grove 5:3f93dd1d4cb3 579 /* Go down and restart negotiation */
sam_grove 5:3f93dd1d4cb3 580 if (f->callbacks->down) {
sam_grove 5:3f93dd1d4cb3 581 (*f->callbacks->down)(f); /* Inform upper layers */
sam_grove 5:3f93dd1d4cb3 582 }
sam_grove 5:3f93dd1d4cb3 583 fsm_sconfreq(f, 0); /* Send initial Configure-Request */
sam_grove 5:3f93dd1d4cb3 584 f->state = LS_REQSENT;
sam_grove 5:3f93dd1d4cb3 585 break;
sam_grove 5:3f93dd1d4cb3 586 }
sam_grove 5:3f93dd1d4cb3 587 }
sam_grove 5:3f93dd1d4cb3 588
sam_grove 5:3f93dd1d4cb3 589
sam_grove 5:3f93dd1d4cb3 590 /*
sam_grove 5:3f93dd1d4cb3 591 * fsm_rconfnakrej - Receive Configure-Nak or Configure-Reject.
sam_grove 5:3f93dd1d4cb3 592 */
sam_grove 5:3f93dd1d4cb3 593 static void
sam_grove 5:3f93dd1d4cb3 594 fsm_rconfnakrej(fsm *f, int code, int id, u_char *inp, int len)
sam_grove 5:3f93dd1d4cb3 595 {
sam_grove 5:3f93dd1d4cb3 596 int (*proc) (fsm *, u_char *, int);
sam_grove 5:3f93dd1d4cb3 597 int ret;
sam_grove 5:3f93dd1d4cb3 598
sam_grove 5:3f93dd1d4cb3 599 FSMDEBUG(LOG_INFO, ("fsm_rconfnakrej(%s): Rcvd id %d state=%d (%s)\n",
sam_grove 5:3f93dd1d4cb3 600 PROTO_NAME(f), id, f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 601
sam_grove 5:3f93dd1d4cb3 602 if (id != f->reqid || f->seen_ack) { /* Expected id? */
sam_grove 5:3f93dd1d4cb3 603 return; /* Nope, toss... */
sam_grove 5:3f93dd1d4cb3 604 }
sam_grove 5:3f93dd1d4cb3 605 proc = (code == CONFNAK)? f->callbacks->nakci: f->callbacks->rejci;
sam_grove 5:3f93dd1d4cb3 606 if (!proc || !((ret = proc(f, inp, len)))) {
sam_grove 5:3f93dd1d4cb3 607 /* Nak/reject is bad - ignore it */
sam_grove 5:3f93dd1d4cb3 608 FSMDEBUG(LOG_INFO, ("%s: received bad %s (length %d)\n",
sam_grove 5:3f93dd1d4cb3 609 PROTO_NAME(f), (code==CONFNAK? "Nak": "reject"), len));
sam_grove 5:3f93dd1d4cb3 610 return;
sam_grove 5:3f93dd1d4cb3 611 }
sam_grove 5:3f93dd1d4cb3 612 f->seen_ack = 1;
sam_grove 5:3f93dd1d4cb3 613
sam_grove 5:3f93dd1d4cb3 614 switch (f->state) {
sam_grove 5:3f93dd1d4cb3 615 case LS_CLOSED:
sam_grove 5:3f93dd1d4cb3 616 case LS_STOPPED:
sam_grove 5:3f93dd1d4cb3 617 fsm_sdata(f, TERMACK, (u_char)id, NULL, 0);
sam_grove 5:3f93dd1d4cb3 618 break;
sam_grove 5:3f93dd1d4cb3 619
sam_grove 5:3f93dd1d4cb3 620 case LS_REQSENT:
sam_grove 5:3f93dd1d4cb3 621 case LS_ACKSENT:
sam_grove 5:3f93dd1d4cb3 622 /* They didn't agree to what we wanted - try another request */
sam_grove 5:3f93dd1d4cb3 623 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
sam_grove 5:3f93dd1d4cb3 624 if (ret < 0) {
sam_grove 5:3f93dd1d4cb3 625 f->state = LS_STOPPED; /* kludge for stopping CCP */
sam_grove 5:3f93dd1d4cb3 626 } else {
sam_grove 5:3f93dd1d4cb3 627 fsm_sconfreq(f, 0); /* Send Configure-Request */
sam_grove 5:3f93dd1d4cb3 628 }
sam_grove 5:3f93dd1d4cb3 629 break;
sam_grove 5:3f93dd1d4cb3 630
sam_grove 5:3f93dd1d4cb3 631 case LS_ACKRCVD:
sam_grove 5:3f93dd1d4cb3 632 /* Got a Nak/reject when we had already had an Ack?? oh well... */
sam_grove 5:3f93dd1d4cb3 633 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
sam_grove 5:3f93dd1d4cb3 634 fsm_sconfreq(f, 0);
sam_grove 5:3f93dd1d4cb3 635 f->state = LS_REQSENT;
sam_grove 5:3f93dd1d4cb3 636 break;
sam_grove 5:3f93dd1d4cb3 637
sam_grove 5:3f93dd1d4cb3 638 case LS_OPENED:
sam_grove 5:3f93dd1d4cb3 639 /* Go down and restart negotiation */
sam_grove 5:3f93dd1d4cb3 640 if (f->callbacks->down) {
sam_grove 5:3f93dd1d4cb3 641 (*f->callbacks->down)(f); /* Inform upper layers */
sam_grove 5:3f93dd1d4cb3 642 }
sam_grove 5:3f93dd1d4cb3 643 fsm_sconfreq(f, 0); /* Send initial Configure-Request */
sam_grove 5:3f93dd1d4cb3 644 f->state = LS_REQSENT;
sam_grove 5:3f93dd1d4cb3 645 break;
sam_grove 5:3f93dd1d4cb3 646 }
sam_grove 5:3f93dd1d4cb3 647 }
sam_grove 5:3f93dd1d4cb3 648
sam_grove 5:3f93dd1d4cb3 649
sam_grove 5:3f93dd1d4cb3 650 /*
sam_grove 5:3f93dd1d4cb3 651 * fsm_rtermreq - Receive Terminate-Req.
sam_grove 5:3f93dd1d4cb3 652 */
sam_grove 5:3f93dd1d4cb3 653 static void
sam_grove 5:3f93dd1d4cb3 654 fsm_rtermreq(fsm *f, int id, u_char *p, int len)
sam_grove 5:3f93dd1d4cb3 655 {
sam_grove 5:3f93dd1d4cb3 656 LWIP_UNUSED_ARG(p);
sam_grove 5:3f93dd1d4cb3 657
sam_grove 5:3f93dd1d4cb3 658 FSMDEBUG(LOG_INFO, ("fsm_rtermreq(%s): Rcvd id %d state=%d (%s)\n",
sam_grove 5:3f93dd1d4cb3 659 PROTO_NAME(f), id, f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 660
sam_grove 5:3f93dd1d4cb3 661 switch (f->state) {
sam_grove 5:3f93dd1d4cb3 662 case LS_ACKRCVD:
sam_grove 5:3f93dd1d4cb3 663 case LS_ACKSENT:
sam_grove 5:3f93dd1d4cb3 664 f->state = LS_REQSENT; /* Start over but keep trying */
sam_grove 5:3f93dd1d4cb3 665 break;
sam_grove 5:3f93dd1d4cb3 666
sam_grove 5:3f93dd1d4cb3 667 case LS_OPENED:
sam_grove 5:3f93dd1d4cb3 668 if (len > 0) {
sam_grove 5:3f93dd1d4cb3 669 FSMDEBUG(LOG_INFO, ("%s terminated by peer (%p)\n", PROTO_NAME(f), p));
sam_grove 5:3f93dd1d4cb3 670 } else {
sam_grove 5:3f93dd1d4cb3 671 FSMDEBUG(LOG_INFO, ("%s terminated by peer\n", PROTO_NAME(f)));
sam_grove 5:3f93dd1d4cb3 672 }
sam_grove 5:3f93dd1d4cb3 673 if (f->callbacks->down) {
sam_grove 5:3f93dd1d4cb3 674 (*f->callbacks->down)(f); /* Inform upper layers */
sam_grove 5:3f93dd1d4cb3 675 }
sam_grove 5:3f93dd1d4cb3 676 f->retransmits = 0;
sam_grove 5:3f93dd1d4cb3 677 f->state = LS_STOPPING;
sam_grove 5:3f93dd1d4cb3 678 TIMEOUT(fsm_timeout, f, f->timeouttime);
sam_grove 5:3f93dd1d4cb3 679 break;
sam_grove 5:3f93dd1d4cb3 680 }
sam_grove 5:3f93dd1d4cb3 681
sam_grove 5:3f93dd1d4cb3 682 fsm_sdata(f, TERMACK, (u_char)id, NULL, 0);
sam_grove 5:3f93dd1d4cb3 683 }
sam_grove 5:3f93dd1d4cb3 684
sam_grove 5:3f93dd1d4cb3 685
sam_grove 5:3f93dd1d4cb3 686 /*
sam_grove 5:3f93dd1d4cb3 687 * fsm_rtermack - Receive Terminate-Ack.
sam_grove 5:3f93dd1d4cb3 688 */
sam_grove 5:3f93dd1d4cb3 689 static void
sam_grove 5:3f93dd1d4cb3 690 fsm_rtermack(fsm *f)
sam_grove 5:3f93dd1d4cb3 691 {
sam_grove 5:3f93dd1d4cb3 692 FSMDEBUG(LOG_INFO, ("fsm_rtermack(%s): state=%d (%s)\n",
sam_grove 5:3f93dd1d4cb3 693 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 694
sam_grove 5:3f93dd1d4cb3 695 switch (f->state) {
sam_grove 5:3f93dd1d4cb3 696 case LS_CLOSING:
sam_grove 5:3f93dd1d4cb3 697 UNTIMEOUT(fsm_timeout, f);
sam_grove 5:3f93dd1d4cb3 698 f->state = LS_CLOSED;
sam_grove 5:3f93dd1d4cb3 699 if( f->callbacks->finished ) {
sam_grove 5:3f93dd1d4cb3 700 (*f->callbacks->finished)(f);
sam_grove 5:3f93dd1d4cb3 701 }
sam_grove 5:3f93dd1d4cb3 702 break;
sam_grove 5:3f93dd1d4cb3 703
sam_grove 5:3f93dd1d4cb3 704 case LS_STOPPING:
sam_grove 5:3f93dd1d4cb3 705 UNTIMEOUT(fsm_timeout, f);
sam_grove 5:3f93dd1d4cb3 706 f->state = LS_STOPPED;
sam_grove 5:3f93dd1d4cb3 707 if( f->callbacks->finished ) {
sam_grove 5:3f93dd1d4cb3 708 (*f->callbacks->finished)(f);
sam_grove 5:3f93dd1d4cb3 709 }
sam_grove 5:3f93dd1d4cb3 710 break;
sam_grove 5:3f93dd1d4cb3 711
sam_grove 5:3f93dd1d4cb3 712 case LS_ACKRCVD:
sam_grove 5:3f93dd1d4cb3 713 f->state = LS_REQSENT;
sam_grove 5:3f93dd1d4cb3 714 break;
sam_grove 5:3f93dd1d4cb3 715
sam_grove 5:3f93dd1d4cb3 716 case LS_OPENED:
sam_grove 5:3f93dd1d4cb3 717 if (f->callbacks->down) {
sam_grove 5:3f93dd1d4cb3 718 (*f->callbacks->down)(f); /* Inform upper layers */
sam_grove 5:3f93dd1d4cb3 719 }
sam_grove 5:3f93dd1d4cb3 720 fsm_sconfreq(f, 0);
sam_grove 5:3f93dd1d4cb3 721 break;
sam_grove 5:3f93dd1d4cb3 722 default:
sam_grove 5:3f93dd1d4cb3 723 FSMDEBUG(LOG_INFO, ("fsm_rtermack(%s): UNHANDLED state=%d (%s)!!!\n",
sam_grove 5:3f93dd1d4cb3 724 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 725 }
sam_grove 5:3f93dd1d4cb3 726 }
sam_grove 5:3f93dd1d4cb3 727
sam_grove 5:3f93dd1d4cb3 728
sam_grove 5:3f93dd1d4cb3 729 /*
sam_grove 5:3f93dd1d4cb3 730 * fsm_rcoderej - Receive an Code-Reject.
sam_grove 5:3f93dd1d4cb3 731 */
sam_grove 5:3f93dd1d4cb3 732 static void
sam_grove 5:3f93dd1d4cb3 733 fsm_rcoderej(fsm *f, u_char *inp, int len)
sam_grove 5:3f93dd1d4cb3 734 {
sam_grove 5:3f93dd1d4cb3 735 u_char code, id;
sam_grove 5:3f93dd1d4cb3 736
sam_grove 5:3f93dd1d4cb3 737 FSMDEBUG(LOG_INFO, ("fsm_rcoderej(%s): state=%d (%s)\n",
sam_grove 5:3f93dd1d4cb3 738 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 739
sam_grove 5:3f93dd1d4cb3 740 if (len < HEADERLEN) {
sam_grove 5:3f93dd1d4cb3 741 FSMDEBUG(LOG_INFO, ("fsm_rcoderej: Rcvd short Code-Reject packet!\n"));
sam_grove 5:3f93dd1d4cb3 742 return;
sam_grove 5:3f93dd1d4cb3 743 }
sam_grove 5:3f93dd1d4cb3 744 GETCHAR(code, inp);
sam_grove 5:3f93dd1d4cb3 745 GETCHAR(id, inp);
sam_grove 5:3f93dd1d4cb3 746 FSMDEBUG(LOG_WARNING, ("%s: Rcvd Code-Reject for code %d, id %d\n",
sam_grove 5:3f93dd1d4cb3 747 PROTO_NAME(f), code, id));
sam_grove 5:3f93dd1d4cb3 748
sam_grove 5:3f93dd1d4cb3 749 if( f->state == LS_ACKRCVD ) {
sam_grove 5:3f93dd1d4cb3 750 f->state = LS_REQSENT;
sam_grove 5:3f93dd1d4cb3 751 }
sam_grove 5:3f93dd1d4cb3 752 }
sam_grove 5:3f93dd1d4cb3 753
sam_grove 5:3f93dd1d4cb3 754
sam_grove 5:3f93dd1d4cb3 755 /*
sam_grove 5:3f93dd1d4cb3 756 * fsm_protreject - Peer doesn't speak this protocol.
sam_grove 5:3f93dd1d4cb3 757 *
sam_grove 5:3f93dd1d4cb3 758 * Treat this as a catastrophic error (RXJ-).
sam_grove 5:3f93dd1d4cb3 759 */
sam_grove 5:3f93dd1d4cb3 760 void
sam_grove 5:3f93dd1d4cb3 761 fsm_protreject(fsm *f)
sam_grove 5:3f93dd1d4cb3 762 {
sam_grove 5:3f93dd1d4cb3 763 switch( f->state ) {
sam_grove 5:3f93dd1d4cb3 764 case LS_CLOSING:
sam_grove 5:3f93dd1d4cb3 765 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
sam_grove 5:3f93dd1d4cb3 766 /* fall through */
sam_grove 5:3f93dd1d4cb3 767 case LS_CLOSED:
sam_grove 5:3f93dd1d4cb3 768 f->state = LS_CLOSED;
sam_grove 5:3f93dd1d4cb3 769 if( f->callbacks->finished ) {
sam_grove 5:3f93dd1d4cb3 770 (*f->callbacks->finished)(f);
sam_grove 5:3f93dd1d4cb3 771 }
sam_grove 5:3f93dd1d4cb3 772 break;
sam_grove 5:3f93dd1d4cb3 773
sam_grove 5:3f93dd1d4cb3 774 case LS_STOPPING:
sam_grove 5:3f93dd1d4cb3 775 case LS_REQSENT:
sam_grove 5:3f93dd1d4cb3 776 case LS_ACKRCVD:
sam_grove 5:3f93dd1d4cb3 777 case LS_ACKSENT:
sam_grove 5:3f93dd1d4cb3 778 UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */
sam_grove 5:3f93dd1d4cb3 779 /* fall through */
sam_grove 5:3f93dd1d4cb3 780 case LS_STOPPED:
sam_grove 5:3f93dd1d4cb3 781 f->state = LS_STOPPED;
sam_grove 5:3f93dd1d4cb3 782 if( f->callbacks->finished ) {
sam_grove 5:3f93dd1d4cb3 783 (*f->callbacks->finished)(f);
sam_grove 5:3f93dd1d4cb3 784 }
sam_grove 5:3f93dd1d4cb3 785 break;
sam_grove 5:3f93dd1d4cb3 786
sam_grove 5:3f93dd1d4cb3 787 case LS_OPENED:
sam_grove 5:3f93dd1d4cb3 788 if( f->callbacks->down ) {
sam_grove 5:3f93dd1d4cb3 789 (*f->callbacks->down)(f);
sam_grove 5:3f93dd1d4cb3 790 }
sam_grove 5:3f93dd1d4cb3 791 /* Init restart counter, send Terminate-Request */
sam_grove 5:3f93dd1d4cb3 792 f->retransmits = f->maxtermtransmits;
sam_grove 5:3f93dd1d4cb3 793 fsm_sdata(f, TERMREQ, f->reqid = ++f->id,
sam_grove 5:3f93dd1d4cb3 794 (u_char *) f->term_reason, f->term_reason_len);
sam_grove 5:3f93dd1d4cb3 795 TIMEOUT(fsm_timeout, f, f->timeouttime);
sam_grove 5:3f93dd1d4cb3 796 --f->retransmits;
sam_grove 5:3f93dd1d4cb3 797
sam_grove 5:3f93dd1d4cb3 798 f->state = LS_STOPPING;
sam_grove 5:3f93dd1d4cb3 799 break;
sam_grove 5:3f93dd1d4cb3 800
sam_grove 5:3f93dd1d4cb3 801 default:
sam_grove 5:3f93dd1d4cb3 802 FSMDEBUG(LOG_INFO, ("%s: Protocol-reject event in state %d (%s)!\n",
sam_grove 5:3f93dd1d4cb3 803 PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
sam_grove 5:3f93dd1d4cb3 804 }
sam_grove 5:3f93dd1d4cb3 805 }
sam_grove 5:3f93dd1d4cb3 806
sam_grove 5:3f93dd1d4cb3 807
sam_grove 5:3f93dd1d4cb3 808 /*
sam_grove 5:3f93dd1d4cb3 809 * fsm_sconfreq - Send a Configure-Request.
sam_grove 5:3f93dd1d4cb3 810 */
sam_grove 5:3f93dd1d4cb3 811 static void
sam_grove 5:3f93dd1d4cb3 812 fsm_sconfreq(fsm *f, int retransmit)
sam_grove 5:3f93dd1d4cb3 813 {
sam_grove 5:3f93dd1d4cb3 814 u_char *outp;
sam_grove 5:3f93dd1d4cb3 815 int cilen;
sam_grove 5:3f93dd1d4cb3 816
sam_grove 5:3f93dd1d4cb3 817 if( f->state != LS_REQSENT && f->state != LS_ACKRCVD && f->state != LS_ACKSENT ) {
sam_grove 5:3f93dd1d4cb3 818 /* Not currently negotiating - reset options */
sam_grove 5:3f93dd1d4cb3 819 if( f->callbacks->resetci ) {
sam_grove 5:3f93dd1d4cb3 820 (*f->callbacks->resetci)(f);
sam_grove 5:3f93dd1d4cb3 821 }
sam_grove 5:3f93dd1d4cb3 822 f->nakloops = 0;
sam_grove 5:3f93dd1d4cb3 823 }
sam_grove 5:3f93dd1d4cb3 824
sam_grove 5:3f93dd1d4cb3 825 if( !retransmit ) {
sam_grove 5:3f93dd1d4cb3 826 /* New request - reset retransmission counter, use new ID */
sam_grove 5:3f93dd1d4cb3 827 f->retransmits = f->maxconfreqtransmits;
sam_grove 5:3f93dd1d4cb3 828 f->reqid = ++f->id;
sam_grove 5:3f93dd1d4cb3 829 }
sam_grove 5:3f93dd1d4cb3 830
sam_grove 5:3f93dd1d4cb3 831 f->seen_ack = 0;
sam_grove 5:3f93dd1d4cb3 832
sam_grove 5:3f93dd1d4cb3 833 /*
sam_grove 5:3f93dd1d4cb3 834 * Make up the request packet
sam_grove 5:3f93dd1d4cb3 835 */
sam_grove 5:3f93dd1d4cb3 836 outp = outpacket_buf[f->unit] + PPP_HDRLEN + HEADERLEN;
sam_grove 5:3f93dd1d4cb3 837 if( f->callbacks->cilen && f->callbacks->addci ) {
sam_grove 5:3f93dd1d4cb3 838 cilen = (*f->callbacks->cilen)(f);
sam_grove 5:3f93dd1d4cb3 839 if( cilen > peer_mru[f->unit] - (int)HEADERLEN ) {
sam_grove 5:3f93dd1d4cb3 840 cilen = peer_mru[f->unit] - HEADERLEN;
sam_grove 5:3f93dd1d4cb3 841 }
sam_grove 5:3f93dd1d4cb3 842 if (f->callbacks->addci) {
sam_grove 5:3f93dd1d4cb3 843 (*f->callbacks->addci)(f, outp, &cilen);
sam_grove 5:3f93dd1d4cb3 844 }
sam_grove 5:3f93dd1d4cb3 845 } else {
sam_grove 5:3f93dd1d4cb3 846 cilen = 0;
sam_grove 5:3f93dd1d4cb3 847 }
sam_grove 5:3f93dd1d4cb3 848
sam_grove 5:3f93dd1d4cb3 849 /* send the request to our peer */
sam_grove 5:3f93dd1d4cb3 850 fsm_sdata(f, CONFREQ, f->reqid, outp, cilen);
sam_grove 5:3f93dd1d4cb3 851
sam_grove 5:3f93dd1d4cb3 852 /* start the retransmit timer */
sam_grove 5:3f93dd1d4cb3 853 --f->retransmits;
sam_grove 5:3f93dd1d4cb3 854 TIMEOUT(fsm_timeout, f, f->timeouttime);
sam_grove 5:3f93dd1d4cb3 855
sam_grove 5:3f93dd1d4cb3 856 FSMDEBUG(LOG_INFO, ("%s: sending Configure-Request, id %d\n",
sam_grove 5:3f93dd1d4cb3 857 PROTO_NAME(f), f->reqid));
sam_grove 5:3f93dd1d4cb3 858 }
sam_grove 5:3f93dd1d4cb3 859
sam_grove 5:3f93dd1d4cb3 860
sam_grove 5:3f93dd1d4cb3 861 /*
sam_grove 5:3f93dd1d4cb3 862 * fsm_sdata - Send some data.
sam_grove 5:3f93dd1d4cb3 863 *
sam_grove 5:3f93dd1d4cb3 864 * Used for all packets sent to our peer by this module.
sam_grove 5:3f93dd1d4cb3 865 */
sam_grove 5:3f93dd1d4cb3 866 void
sam_grove 5:3f93dd1d4cb3 867 fsm_sdata( fsm *f, u_char code, u_char id, u_char *data, int datalen)
sam_grove 5:3f93dd1d4cb3 868 {
sam_grove 5:3f93dd1d4cb3 869 u_char *outp;
sam_grove 5:3f93dd1d4cb3 870 int outlen;
sam_grove 5:3f93dd1d4cb3 871
sam_grove 5:3f93dd1d4cb3 872 /* Adjust length to be smaller than MTU */
sam_grove 5:3f93dd1d4cb3 873 outp = outpacket_buf[f->unit];
sam_grove 5:3f93dd1d4cb3 874 if (datalen > peer_mru[f->unit] - (int)HEADERLEN) {
sam_grove 5:3f93dd1d4cb3 875 datalen = peer_mru[f->unit] - HEADERLEN;
sam_grove 5:3f93dd1d4cb3 876 }
sam_grove 5:3f93dd1d4cb3 877 if (datalen && data != outp + PPP_HDRLEN + HEADERLEN) {
sam_grove 5:3f93dd1d4cb3 878 BCOPY(data, outp + PPP_HDRLEN + HEADERLEN, datalen);
sam_grove 5:3f93dd1d4cb3 879 }
sam_grove 5:3f93dd1d4cb3 880 outlen = datalen + HEADERLEN;
sam_grove 5:3f93dd1d4cb3 881 MAKEHEADER(outp, f->protocol);
sam_grove 5:3f93dd1d4cb3 882 PUTCHAR(code, outp);
sam_grove 5:3f93dd1d4cb3 883 PUTCHAR(id, outp);
sam_grove 5:3f93dd1d4cb3 884 PUTSHORT(outlen, outp);
sam_grove 5:3f93dd1d4cb3 885 pppWrite(f->unit, outpacket_buf[f->unit], outlen + PPP_HDRLEN);
sam_grove 5:3f93dd1d4cb3 886 FSMDEBUG(LOG_INFO, ("fsm_sdata(%s): Sent code %d,%d,%d.\n",
sam_grove 5:3f93dd1d4cb3 887 PROTO_NAME(f), code, id, outlen));
sam_grove 5:3f93dd1d4cb3 888 }
sam_grove 5:3f93dd1d4cb3 889
sam_grove 5:3f93dd1d4cb3 890 #endif /* PPP_SUPPORT */