sys/i4b/layer3/i4b_l3timer.c

   1 /*-
   2  * Copyright (c) 1997, 2002 Hellmuth Michaelis. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  23  * SUCH DAMAGE.
  24  */
  25
  26 /*---------------------------------------------------------------------------
  27  *
  28  *      i4b_l3timer.c - timer and timeout handling for layer 3
  29  *      ------------------------------------------------------
  30  *      last edit-date: [Sat Mar  9 19:35:31 2002]
  31  *
  32  *---------------------------------------------------------------------------*/
  33
  34 #include <sys/cdefs.h>
  35 __FBSDID("$FreeBSD$");
  36
  37 #include <sys/param.h>
  38 #include <sys/kernel.h>
  39 #include <sys/systm.h>
  40 #include <sys/mbuf.h>
  41
  42 #include <i4b/include/i4b_debug.h>
  43 #include <i4b/include/i4b_ioctl.h>
  44
  45 #include <i4b/include/i4b_global.h>
  46 #include <i4b/include/i4b_l3l4.h>
  47
  48 #include <i4b/layer3/i4b_l3.h>
  49 #include <i4b/layer3/i4b_l3fsm.h>
  50
  51 /*---------------------------------------------------------------------------*
  52  *      stop all layer 3 timers
  53  *---------------------------------------------------------------------------*/
  54 void i4b_l3_stop_all_timers(call_desc_t *cd)
  55 {
  56         T303_stop(cd);
  57         T305_stop(cd);
  58         T308_stop(cd);
  59         T309_stop(cd);
  60         T310_stop(cd);
  61         T313_stop(cd);
  62 }
  63
  64 /*---------------------------------------------------------------------------*
  65  *      timer T303 timeout function
  66  *---------------------------------------------------------------------------*/
  67 static void
  68 T303_timeout(call_desc_t *cd)
  69 {
  70         NDBGL3(L3_T_ERR, "SETUP not answered, cr = %d", cd->cr);
  71         next_l3state(cd, EV_T303EXP);
  72 }
  73
  74 /*---------------------------------------------------------------------------*
  75  *      timer T303 start
  76  *---------------------------------------------------------------------------*/
  77 void
  78 T303_start(call_desc_t *cd)
  79 {
  80         if (cd->T303 == TIMER_ACTIVE)
  81                 return;
  82
  83         NDBGL3(L3_T_MSG, "cr = %d", cd->cr);
  84         cd->T303 = TIMER_ACTIVE;
  85
  86         START_TIMER(cd->T303_callout, T303_timeout, cd, T303VAL);
  87 }
  88
  89 /*---------------------------------------------------------------------------*
  90  *      timer T303 stop
  91  *---------------------------------------------------------------------------*/
  92 void
  93 T303_stop(call_desc_t *cd)
  94 {
  95         CRIT_VAR;
  96         CRIT_BEG;
  97
  98         if(cd->T303 != TIMER_IDLE)
  99         {
 100                 STOP_TIMER(cd->T303_callout, T303_timeout, cd);
 101                 cd->T303 = TIMER_IDLE;
 102         }
 103         CRIT_END;
 104         NDBGL3(L3_T_MSG, "cr = %d", cd->cr);
 105 }
 106
 107 /*---------------------------------------------------------------------------*
 108  *      timer T305 timeout function
 109  *---------------------------------------------------------------------------*/
 110 static void
 111 T305_timeout(call_desc_t *cd)
 112 {
 113         NDBGL3(L3_T_ERR, "DISC not answered, cr = %d", cd->cr);
 114         next_l3state(cd, EV_T305EXP);
 115 }
 116
 117 /*---------------------------------------------------------------------------*
 118  *      timer T305 start
 119  *---------------------------------------------------------------------------*/
 120 void
 121 T305_start(call_desc_t *cd)
 122 {
 123         if (cd->T305 == TIMER_ACTIVE)
 124                 return;
 125
 126         NDBGL3(L3_T_MSG, "cr = %d", cd->cr);
 127         cd->T305 = TIMER_ACTIVE;
 128
 129         START_TIMER(cd->T305_callout, T305_timeout, cd, T305VAL);
 130 }
 131
 132 /*---------------------------------------------------------------------------*
 133  *      timer T305 stop
 134  *---------------------------------------------------------------------------*/
 135 void
 136 T305_stop(call_desc_t *cd)
 137 {
 138         CRIT_VAR;
 139         CRIT_BEG;
 140
 141         if(cd->T305 != TIMER_IDLE)
 142         {
 143                 STOP_TIMER(cd->T305_callout, T305_timeout, cd);
 144                 cd->T305 = TIMER_IDLE;
 145         }
 146         CRIT_END;
 147
 148         NDBGL3(L3_T_MSG, "cr = %d", cd->cr);
 149 }
 150
 151 /*---------------------------------------------------------------------------*
 152  *      timer T308 timeout function
 153  *---------------------------------------------------------------------------*/
 154 static void
 155 T308_timeout(call_desc_t *cd)
 156 {
 157         NDBGL3(L3_T_ERR, "REL not answered, cr = %d", cd->cr);
 158         next_l3state(cd, EV_T308EXP);
 159 }
 160
 161 /*---------------------------------------------------------------------------*
 162  *      timer T308 start
 163  *---------------------------------------------------------------------------*/
 164 void
 165 T308_start(call_desc_t *cd)
 166 {
 167         if(cd->T308 == TIMER_ACTIVE)
 168                 return;
 169
 170         NDBGL3(L3_T_MSG, "cr = %d", cd->cr);
 171         cd->T308 = TIMER_ACTIVE;
 172
 173         START_TIMER(cd->T308_callout, T308_timeout, cd, T308VAL);
 174 }
 175
 176 /*---------------------------------------------------------------------------*
 177  *      timer T308 stop
 178  *---------------------------------------------------------------------------*/
 179 void
 180 T308_stop(call_desc_t *cd)
 181 {
 182         CRIT_VAR;
 183         CRIT_BEG;
 184
 185         if(cd->T308 != TIMER_IDLE)
 186         {
 187                 STOP_TIMER(cd->T308_callout, T308_timeout, cd);
 188                 cd->T308 = TIMER_IDLE;
 189         }
 190         CRIT_END;
 191
 192         NDBGL3(L3_T_MSG, "cr = %d", cd->cr);
 193 }
 194
 195 /*---------------------------------------------------------------------------*
 196  *      timer T309 timeout function
 197  *---------------------------------------------------------------------------*/
 198 static void
 199 T309_timeout(call_desc_t *cd)
 200 {
 201         NDBGL3(L3_T_ERR, "datalink not reconnected, cr = %d", cd->cr);
 202         next_l3state(cd, EV_T309EXP);
 203 }
 204
 205 /*---------------------------------------------------------------------------*
 206  *      timer T309 start
 207  *---------------------------------------------------------------------------*/
 208 void
 209 T309_start(call_desc_t *cd)
 210 {
 211         if (cd->T309 == TIMER_ACTIVE)
 212                 return;
 213
 214         NDBGL3(L3_T_MSG, "cr = %d", cd->cr);
 215         cd->T309 = TIMER_ACTIVE;
 216
 217         START_TIMER(cd->T309_callout, T309_timeout, cd, T309VAL);
 218 }
 219
 220 /*---------------------------------------------------------------------------*
 221  *      timer T309 stop
 222  *---------------------------------------------------------------------------*/
 223 void
 224 T309_stop(call_desc_t *cd)
 225 {
 226         CRIT_VAR;
 227         CRIT_BEG;
 228
 229         if(cd->T309 != TIMER_IDLE)
 230         {
 231                 STOP_TIMER(cd->T309_callout, T309_timeout, cd);
 232                 cd->T309 = TIMER_IDLE;
 233         }
 234         CRIT_END;
 235
 236         NDBGL3(L3_T_MSG, "cr = %d", cd->cr);
 237 }
 238
 239 /*---------------------------------------------------------------------------*
 240  *      timer T310 timeout function
 241  *---------------------------------------------------------------------------*/
 242 static void
 243 T310_timeout(call_desc_t *cd)
 244 {
 245         NDBGL3(L3_T_ERR, "CALL PROC timeout, cr = %d", cd->cr);
 246         next_l3state(cd, EV_T310EXP);
 247 }
 248
 249 /*---------------------------------------------------------------------------*
 250  *      timer T310 start
 251  *---------------------------------------------------------------------------*/
 252 void
 253 T310_start(call_desc_t *cd)
 254 {
 255         if (cd->T310 == TIMER_ACTIVE)
 256                 return;
 257
 258         NDBGL3(L3_T_MSG, "cr = %d", cd->cr);
 259         cd->T310 = TIMER_ACTIVE;
 260
 261         START_TIMER(cd->T310_callout, T310_timeout, cd, T310VAL);
 262 }
 263
 264 /*---------------------------------------------------------------------------*
 265  *      timer T310 stop
 266  *---------------------------------------------------------------------------*/
 267 void
 268 T310_stop(call_desc_t *cd)
 269 {
 270         CRIT_VAR;
 271         CRIT_BEG;
 272
 273         if(cd->T310 != TIMER_IDLE)
 274         {
 275                 STOP_TIMER(cd->T310_callout, T310_timeout, cd);
 276                 cd->T310 = TIMER_IDLE;
 277         }
 278         CRIT_END;
 279
 280         NDBGL3(L3_T_MSG, "cr = %d", cd->cr);
 281 }
 282
 283 /*---------------------------------------------------------------------------*
 284  *      timer T313 timeout function
 285  *---------------------------------------------------------------------------*/
 286 static void
 287 T313_timeout(call_desc_t *cd)
 288 {
 289         NDBGL3(L3_T_ERR, "CONN ACK not received, cr = %d", cd->cr);
 290         next_l3state(cd, EV_T313EXP);
 291 }
 292
 293 /*---------------------------------------------------------------------------*
 294  *      timer T313 start
 295  *---------------------------------------------------------------------------*/
 296 void
 297 T313_start(call_desc_t *cd)
 298 {
 299         if (cd->T313 == TIMER_ACTIVE)
 300                 return;
 301
 302         NDBGL3(L3_T_MSG, "cr = %d", cd->cr);
 303         cd->T313 = TIMER_ACTIVE;
 304
 305         START_TIMER(cd->T313_callout, T313_timeout, cd, T313VAL);
 306 }
 307
 308 /*---------------------------------------------------------------------------*
 309  *      timer T313 stop
 310  *---------------------------------------------------------------------------*/
 311 void
 312 T313_stop(call_desc_t *cd)
 313 {
 314         CRIT_VAR;
 315         CRIT_BEG;
 316
 317         if(cd->T313 != TIMER_IDLE)
 318         {
 319                 cd->T313 = TIMER_IDLE;
 320                 STOP_TIMER(cd->T313_callout, T313_timeout, cd);
 321         }
 322         CRIT_END;
 323
 324         NDBGL3(L3_T_MSG, "cr = %d", cd->cr);
 325 }