git.oblomov.eu Git - linux-2.6/blob - drivers/isdn/sc/ioctl.c

   1 /*
   2  * Copyright (C) 1996  SpellCaster Telecommunications Inc.
   3  *
   4  * This software may be used and distributed according to the terms
   5  * of the GNU General Public License, incorporated herein by reference.
   6  *
   7  */
   8
   9 #include "includes.h"
  10 #include "hardware.h"
  11 #include "message.h"
  12 #include "card.h"
  13 #include "scioc.h"
  14
  15 extern int indicate_status(int, int, unsigned long, char *);
  16 extern int startproc(int);
  17 extern int reset(int);
  18 extern int send_and_receive(int, unsigned int, unsigned char,unsigned char,
  19                 unsigned char,unsigned char,
  20                 unsigned char, unsigned char *, RspMessage *, int);
  21
  22 extern board *sc_adapter[];
  23
  24
  25 static int GetStatus(int card, boardInfo *);
  26
  27 /*
  28  * Process private IOCTL messages (typically from scctrl)
  29  */
  30 int sc_ioctl(int card, scs_ioctl *data)
  31 {
  32         int             status;
  33         RspMessage      *rcvmsg;
  34         char            *spid;
  35         char            *dn;
  36         char            switchtype;
  37         char            speed;
  38
  39         rcvmsg = kmalloc(sizeof(RspMessage), GFP_KERNEL);
  40         if (!rcvmsg)
  41                 return -ENOMEM;
  42
  43         switch(data->command) {
  44         case SCIOCRESET:        /* Perform a hard reset of the adapter */
  45         {
  46                 pr_debug("%s: SCIOCRESET: ioctl received\n",
  47                         sc_adapter[card]->devicename);
  48                 sc_adapter[card]->StartOnReset = 0;
  49                 kfree(rcvmsg);
  50                 return reset(card);
  51         }
  52
  53         case SCIOCLOAD:
  54         {
  55                 char *srec;
  56
  57                 srec = kmalloc(SCIOC_SRECSIZE, GFP_KERNEL);
  58                 if (!srec) {
  59                         kfree(rcvmsg);
  60                         return -ENOMEM;
  61                 }
  62                 pr_debug("%s: SCIOLOAD: ioctl received\n",
  63                                 sc_adapter[card]->devicename);
  64                 if(sc_adapter[card]->EngineUp) {
  65                         pr_debug("%s: SCIOCLOAD: command failed, LoadProc while engine running.\n",
  66                                 sc_adapter[card]->devicename);
  67                         kfree(rcvmsg);
  68                         kfree(srec);
  69                         return -1;
  70                 }
  71
  72                 /*
  73                  * Get the SRec from user space
  74                  */
  75                 if (copy_from_user(srec, data->dataptr, SCIOC_SRECSIZE)) {
  76                         kfree(rcvmsg);
  77                         kfree(srec);
  78                         return -EFAULT;
  79                 }
  80
  81                 status = send_and_receive(card, CMPID, cmReqType2, cmReqClass0, cmReqLoadProc,
  82                                 0, SCIOC_SRECSIZE, srec, rcvmsg, SAR_TIMEOUT);
  83                 kfree(rcvmsg);
  84                 kfree(srec);
  85
  86                 if(status) {
  87                         pr_debug("%s: SCIOCLOAD: command failed, status = %d\n",
  88                                 sc_adapter[card]->devicename, status);
  89                         return -1;
  90                 }
  91                 else {
  92                         pr_debug("%s: SCIOCLOAD: command successful\n",
  93                                         sc_adapter[card]->devicename);
  94                         return 0;
  95                 }
  96         }
  97
  98         case SCIOCSTART:
  99         {
 100                 pr_debug("%s: SCIOSTART: ioctl received\n",
 101                                 sc_adapter[card]->devicename);
 102                 if(sc_adapter[card]->EngineUp) {
 103                         pr_debug("%s: SCIOCSTART: command failed, engine already running.\n",
 104                                 sc_adapter[card]->devicename);
 105                         return -1;
 106                 }
 107
 108                 sc_adapter[card]->StartOnReset = 1;
 109                 startproc(card);
 110                 return 0;
 111         }
 112
 113         case SCIOCSETSWITCH:
 114         {
 115                 pr_debug("%s: SCIOSETSWITCH: ioctl received\n",
 116                                 sc_adapter[card]->devicename);
 117
 118                 /*
 119                  * Get the switch type from user space
 120                  */
 121                 if (copy_from_user(&switchtype, data->dataptr, sizeof(char))) {
 122                         kfree(rcvmsg);
 123                         return -EFAULT;
 124                 }
 125
 126                 pr_debug("%s: SCIOCSETSWITCH: setting switch type to %d\n",
 127                         sc_adapter[card]->devicename,
 128                         switchtype);
 129                 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0, ceReqCallSetSwitchType,
 130                                                 0, sizeof(char),&switchtype, rcvmsg, SAR_TIMEOUT);
 131                 if(!status && !(rcvmsg->rsp_status)) {
 132                         pr_debug("%s: SCIOCSETSWITCH: command successful\n",
 133                                 sc_adapter[card]->devicename);
 134                         kfree(rcvmsg);
 135                         return 0;
 136                 }
 137                 else {
 138                         pr_debug("%s: SCIOCSETSWITCH: command failed (status = %d)\n",
 139                                 sc_adapter[card]->devicename, status);
 140                         kfree(rcvmsg);
 141                         return status;
 142                 }
 143         }
 144
 145         case SCIOCGETSWITCH:
 146         {
 147                 pr_debug("%s: SCIOGETSWITCH: ioctl received\n",
 148                                 sc_adapter[card]->devicename);
 149
 150                 /*
 151                  * Get the switch type from the board
 152                  */
 153                 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0,
 154                         ceReqCallGetSwitchType, 0, 0, NULL, rcvmsg, SAR_TIMEOUT);
 155                 if (!status && !(rcvmsg->rsp_status)) {
 156                         pr_debug("%s: SCIOCGETSWITCH: command successful\n",
 157                                         sc_adapter[card]->devicename);
 158                 }
 159                 else {
 160                         pr_debug("%s: SCIOCGETSWITCH: command failed (status = %d)\n",
 161                                 sc_adapter[card]->devicename, status);
 162                         kfree(rcvmsg);
 163                         return status;
 164                 }
 165
 166                 switchtype = rcvmsg->msg_data.byte_array[0];
 167
 168                 /*
 169                  * Package the switch type and send to user space
 170                  */
 171                 if (copy_to_user(data->dataptr, &switchtype,
 172                                  sizeof(char))) {
 173                         kfree(rcvmsg);
 174                         return -EFAULT;
 175                 }
 176
 177                 kfree(rcvmsg);
 178                 return 0;
 179         }
 180
 181         case SCIOCGETSPID:
 182         {
 183                 pr_debug("%s: SCIOGETSPID: ioctl received\n",
 184                                 sc_adapter[card]->devicename);
 185
 186                 spid = kmalloc(SCIOC_SPIDSIZE, GFP_KERNEL);
 187                 if (!spid) {
 188                         kfree(rcvmsg);
 189                         return -ENOMEM;
 190                 }
 191                 /*
 192                  * Get the spid from the board
 193                  */
 194                 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0, ceReqCallGetSPID,
 195                                         data->channel, 0, NULL, rcvmsg, SAR_TIMEOUT);
 196                 if (!status) {
 197                         pr_debug("%s: SCIOCGETSPID: command successful\n",
 198                                         sc_adapter[card]->devicename);
 199                 } else {
 200                         pr_debug("%s: SCIOCGETSPID: command failed (status = %d)\n",
 201                                 sc_adapter[card]->devicename, status);
 202                         kfree(spid);
 203                         kfree(rcvmsg);
 204                         return status;
 205                 }
 206                 strcpy(spid, rcvmsg->msg_data.byte_array);
 207
 208                 /*
 209                  * Package the switch type and send to user space
 210                  */
 211                 if (copy_to_user(data->dataptr, spid, SCIOC_SPIDSIZE)) {
 212                         kfree(spid);
 213                         kfree(rcvmsg);
 214                         return -EFAULT;
 215                 }
 216
 217                 kfree(spid);
 218                 kfree(rcvmsg);
 219                 return 0;
 220         }
 221
 222         case SCIOCSETSPID:
 223         {
 224                 pr_debug("%s: DCBIOSETSPID: ioctl received\n",
 225                                 sc_adapter[card]->devicename);
 226
 227                 spid = kmalloc(SCIOC_SPIDSIZE, GFP_KERNEL);
 228                 if(!spid) {
 229                         kfree(rcvmsg);
 230                         return -ENOMEM;
 231                 }
 232
 233                 /*
 234                  * Get the spid from user space
 235                  */
 236                 if (copy_from_user(spid, data->dataptr, SCIOC_SPIDSIZE)) {
 237                         kfree(rcvmsg);
 238                         return -EFAULT;
 239                 }
 240
 241                 pr_debug("%s: SCIOCSETSPID: setting channel %d spid to %s\n",
 242                         sc_adapter[card]->devicename, data->channel, spid);
 243                 status = send_and_receive(card, CEPID, ceReqTypeCall,
 244                         ceReqClass0, ceReqCallSetSPID, data->channel,
 245                         strlen(spid), spid, rcvmsg, SAR_TIMEOUT);
 246                 if(!status && !(rcvmsg->rsp_status)) {
 247                         pr_debug("%s: SCIOCSETSPID: command successful\n",
 248                                 sc_adapter[card]->devicename);
 249                         kfree(rcvmsg);
 250                         kfree(spid);
 251                         return 0;
 252                 }
 253                 else {
 254                         pr_debug("%s: SCIOCSETSPID: command failed (status = %d)\n",
 255                                 sc_adapter[card]->devicename, status);
 256                         kfree(rcvmsg);
 257                         kfree(spid);
 258                         return status;
 259                 }
 260         }
 261
 262         case SCIOCGETDN:
 263         {
 264                 pr_debug("%s: SCIOGETDN: ioctl received\n",
 265                                 sc_adapter[card]->devicename);
 266
 267                 /*
 268                  * Get the dn from the board
 269                  */
 270                 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0, ceReqCallGetMyNumber,
 271                                         data->channel, 0, NULL, rcvmsg, SAR_TIMEOUT);
 272                 if (!status) {
 273                         pr_debug("%s: SCIOCGETDN: command successful\n",
 274                                         sc_adapter[card]->devicename);
 275                 }
 276                 else {
 277                         pr_debug("%s: SCIOCGETDN: command failed (status = %d)\n",
 278                                 sc_adapter[card]->devicename, status);
 279                         kfree(rcvmsg);
 280                         return status;
 281                 }
 282
 283                 dn = kmalloc(SCIOC_DNSIZE, GFP_KERNEL);
 284                 if (!dn) {
 285                         kfree(rcvmsg);
 286                         return -ENOMEM;
 287                 }
 288                 strcpy(dn, rcvmsg->msg_data.byte_array);
 289                 kfree(rcvmsg);
 290
 291                 /*
 292                  * Package the dn and send to user space
 293                  */
 294                 if (copy_to_user(data->dataptr, dn, SCIOC_DNSIZE)) {
 295                         kfree(dn);
 296                         return -EFAULT;
 297                 }
 298                 kfree(dn);
 299                 return 0;
 300         }
 301
 302         case SCIOCSETDN:
 303         {
 304                 pr_debug("%s: SCIOSETDN: ioctl received\n",
 305                                 sc_adapter[card]->devicename);
 306
 307                 dn = kmalloc(SCIOC_DNSIZE, GFP_KERNEL);
 308                 if (!dn) {
 309                         kfree(rcvmsg);
 310                         return -ENOMEM;
 311                 }
 312                 /*
 313                  * Get the spid from user space
 314                  */
 315                 if (copy_from_user(dn, data->dataptr, SCIOC_DNSIZE)) {
 316                         kfree(rcvmsg);
 317                         kfree(dn);
 318                         return -EFAULT;
 319                 }
 320
 321                 pr_debug("%s: SCIOCSETDN: setting channel %d dn to %s\n",
 322                         sc_adapter[card]->devicename, data->channel, dn);
 323                 status = send_and_receive(card, CEPID, ceReqTypeCall,
 324                         ceReqClass0, ceReqCallSetMyNumber, data->channel,
 325                         strlen(dn),dn,rcvmsg, SAR_TIMEOUT);
 326                 if(!status && !(rcvmsg->rsp_status)) {
 327                         pr_debug("%s: SCIOCSETDN: command successful\n",
 328                                 sc_adapter[card]->devicename);
 329                         kfree(rcvmsg);
 330                         kfree(dn);
 331                         return 0;
 332                 }
 333                 else {
 334                         pr_debug("%s: SCIOCSETDN: command failed (status = %d)\n",
 335                                 sc_adapter[card]->devicename, status);
 336                         kfree(rcvmsg);
 337                         kfree(dn);
 338                         return status;
 339                 }
 340         }
 341
 342         case SCIOCTRACE:
 343
 344                 pr_debug("%s: SCIOTRACE: ioctl received\n",
 345                                 sc_adapter[card]->devicename);
 346 /*              sc_adapter[card]->trace = !sc_adapter[card]->trace;
 347                 pr_debug("%s: SCIOCTRACE: tracing turned %s\n",
 348                                 sc_adapter[card]->devicename,
 349                         sc_adapter[card]->trace ? "ON" : "OFF"); */
 350                 break;
 351
 352         case SCIOCSTAT:
 353         {
 354                 boardInfo *bi;
 355
 356                 pr_debug("%s: SCIOSTAT: ioctl received\n",
 357                                 sc_adapter[card]->devicename);
 358
 359                 bi = kmalloc (sizeof(boardInfo), GFP_KERNEL);
 360                 if (!bi) {
 361                         kfree(rcvmsg);
 362                         return -ENOMEM;
 363                 }
 364
 365                 kfree(rcvmsg);
 366                 GetStatus(card, bi);
 367
 368                 if (copy_to_user(data->dataptr, bi, sizeof(boardInfo))) {
 369                         kfree(bi);
 370                         return -EFAULT;
 371                 }
 372
 373                 kfree(bi);
 374                 return 0;
 375         }
 376
 377         case SCIOCGETSPEED:
 378         {
 379                 pr_debug("%s: SCIOGETSPEED: ioctl received\n",
 380                                 sc_adapter[card]->devicename);
 381
 382                 /*
 383                  * Get the speed from the board
 384                  */
 385                 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0,
 386                         ceReqCallGetCallType, data->channel, 0, NULL, rcvmsg, SAR_TIMEOUT);
 387                 if (!status && !(rcvmsg->rsp_status)) {
 388                         pr_debug("%s: SCIOCGETSPEED: command successful\n",
 389                                 sc_adapter[card]->devicename);
 390                 }
 391                 else {
 392                         pr_debug("%s: SCIOCGETSPEED: command failed (status = %d)\n",
 393                                 sc_adapter[card]->devicename, status);
 394                         kfree(rcvmsg);
 395                         return status;
 396                 }
 397
 398                 speed = rcvmsg->msg_data.byte_array[0];
 399
 400                 kfree(rcvmsg);
 401
 402                 /*
 403                  * Package the switch type and send to user space
 404                  */
 405
 406                 if (copy_to_user(data->dataptr, &speed, sizeof(char)))
 407                         return -EFAULT;
 408
 409                 return 0;
 410         }
 411
 412         case SCIOCSETSPEED:
 413                 pr_debug("%s: SCIOCSETSPEED: ioctl received\n",
 414                                 sc_adapter[card]->devicename);
 415                 break;
 416
 417         case SCIOCLOOPTST:
 418                 pr_debug("%s: SCIOCLOOPTST: ioctl received\n",
 419                                 sc_adapter[card]->devicename);
 420                 break;
 421
 422         default:
 423                 kfree(rcvmsg);
 424                 return -1;
 425         }
 426
 427         kfree(rcvmsg);
 428         return 0;
 429 }
 430
 431 static int GetStatus(int card, boardInfo *bi)
 432 {
 433         RspMessage rcvmsg;
 434         int i, status;
 435
 436         /*
 437          * Fill in some of the basic info about the board
 438          */
 439         bi->modelid = sc_adapter[card]->model;
 440         strcpy(bi->serial_no, sc_adapter[card]->hwconfig.serial_no);
 441         strcpy(bi->part_no, sc_adapter[card]->hwconfig.part_no);
 442         bi->iobase = sc_adapter[card]->iobase;
 443         bi->rambase = sc_adapter[card]->rambase;
 444         bi->irq = sc_adapter[card]->interrupt;
 445         bi->ramsize = sc_adapter[card]->hwconfig.ram_size;
 446         bi->interface = sc_adapter[card]->hwconfig.st_u_sense;
 447         strcpy(bi->load_ver, sc_adapter[card]->load_ver);
 448         strcpy(bi->proc_ver, sc_adapter[card]->proc_ver);
 449
 450         /*
 451          * Get the current PhyStats and LnkStats
 452          */
 453         status = send_and_receive(card, CEPID, ceReqTypePhy, ceReqClass2,
 454                 ceReqPhyStatus, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
 455         if(!status) {
 456                 if(sc_adapter[card]->model < PRI_BOARD) {
 457                         bi->l1_status = rcvmsg.msg_data.byte_array[2];
 458                         for(i = 0 ; i < BRI_CHANNELS ; i++)
 459                                 bi->status.bristats[i].phy_stat =
 460                                         rcvmsg.msg_data.byte_array[i];
 461                 }
 462                 else {
 463                         bi->l1_status = rcvmsg.msg_data.byte_array[0];
 464                         bi->l2_status = rcvmsg.msg_data.byte_array[1];
 465                         for(i = 0 ; i < PRI_CHANNELS ; i++)
 466                                 bi->status.pristats[i].phy_stat =
 467                                         rcvmsg.msg_data.byte_array[i+2];
 468                 }
 469         }
 470
 471         /*
 472          * Get the call types for each channel
 473          */
 474         for (i = 0 ; i < sc_adapter[card]->nChannels ; i++) {
 475                 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0,
 476                         ceReqCallGetCallType, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
 477                 if(!status) {
 478                         if (sc_adapter[card]->model == PRI_BOARD) {
 479                                 bi->status.pristats[i].call_type =
 480                                         rcvmsg.msg_data.byte_array[0];
 481                         }
 482                         else {
 483                                 bi->status.bristats[i].call_type =
 484                                         rcvmsg.msg_data.byte_array[0];
 485                         }
 486                 }
 487         }
 488
 489         /*
 490          * If PRI, get the call states and service states for each channel
 491          */
 492         if (sc_adapter[card]->model == PRI_BOARD) {
 493                 /*
 494                  * Get the call states
 495                  */
 496                 status = send_and_receive(card, CEPID, ceReqTypeStat, ceReqClass2,
 497                         ceReqPhyChCallState, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
 498                 if(!status) {
 499                         for( i = 0 ; i < PRI_CHANNELS ; i++ )
 500                                 bi->status.pristats[i].call_state =
 501                                         rcvmsg.msg_data.byte_array[i];
 502                 }
 503
 504                 /*
 505                  * Get the service states
 506                  */
 507                 status = send_and_receive(card, CEPID, ceReqTypeStat, ceReqClass2,
 508                         ceReqPhyChServState, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
 509                 if(!status) {
 510                         for( i = 0 ; i < PRI_CHANNELS ; i++ )
 511                                 bi->status.pristats[i].serv_state =
 512                                         rcvmsg.msg_data.byte_array[i];
 513                 }
 514
 515                 /*
 516                  * Get the link stats for the channels
 517                  */
 518                 for (i = 1 ; i <= PRI_CHANNELS ; i++) {
 519                         status = send_and_receive(card, CEPID, ceReqTypeLnk, ceReqClass0,
 520                                 ceReqLnkGetStats, i, 0, NULL, &rcvmsg, SAR_TIMEOUT);
 521                         if (!status) {
 522                                 bi->status.pristats[i-1].link_stats.tx_good =
 523                                         (unsigned long)rcvmsg.msg_data.byte_array[0];
 524                                 bi->status.pristats[i-1].link_stats.tx_bad =
 525                                         (unsigned long)rcvmsg.msg_data.byte_array[4];
 526                                 bi->status.pristats[i-1].link_stats.rx_good =
 527                                         (unsigned long)rcvmsg.msg_data.byte_array[8];
 528                                 bi->status.pristats[i-1].link_stats.rx_bad =
 529                                         (unsigned long)rcvmsg.msg_data.byte_array[12];
 530                         }
 531                 }
 532
 533                 /*
 534                  * Link stats for the D channel
 535                  */
 536                 status = send_and_receive(card, CEPID, ceReqTypeLnk, ceReqClass0,
 537                         ceReqLnkGetStats, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
 538                 if (!status) {
 539                         bi->dch_stats.tx_good = (unsigned long)rcvmsg.msg_data.byte_array[0];
 540                         bi->dch_stats.tx_bad = (unsigned long)rcvmsg.msg_data.byte_array[4];
 541                         bi->dch_stats.rx_good = (unsigned long)rcvmsg.msg_data.byte_array[8];
 542                         bi->dch_stats.rx_bad = (unsigned long)rcvmsg.msg_data.byte_array[12];
 543                 }
 544
 545                 return 0;
 546         }
 547
 548         /*
 549          * If BRI or POTS, Get SPID, DN and call types for each channel
 550          */
 551
 552         /*
 553          * Get the link stats for the channels
 554          */
 555         status = send_and_receive(card, CEPID, ceReqTypeLnk, ceReqClass0,
 556                 ceReqLnkGetStats, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
 557         if (!status) {
 558                 bi->dch_stats.tx_good = (unsigned long)rcvmsg.msg_data.byte_array[0];
 559                 bi->dch_stats.tx_bad = (unsigned long)rcvmsg.msg_data.byte_array[4];
 560                 bi->dch_stats.rx_good = (unsigned long)rcvmsg.msg_data.byte_array[8];
 561                 bi->dch_stats.rx_bad = (unsigned long)rcvmsg.msg_data.byte_array[12];
 562                 bi->status.bristats[0].link_stats.tx_good =
 563                         (unsigned long)rcvmsg.msg_data.byte_array[16];
 564                 bi->status.bristats[0].link_stats.tx_bad =
 565                         (unsigned long)rcvmsg.msg_data.byte_array[20];
 566                 bi->status.bristats[0].link_stats.rx_good =
 567                         (unsigned long)rcvmsg.msg_data.byte_array[24];
 568                 bi->status.bristats[0].link_stats.rx_bad =
 569                         (unsigned long)rcvmsg.msg_data.byte_array[28];
 570                 bi->status.bristats[1].link_stats.tx_good =
 571                         (unsigned long)rcvmsg.msg_data.byte_array[32];
 572                 bi->status.bristats[1].link_stats.tx_bad =
 573                         (unsigned long)rcvmsg.msg_data.byte_array[36];
 574                 bi->status.bristats[1].link_stats.rx_good =
 575                         (unsigned long)rcvmsg.msg_data.byte_array[40];
 576                 bi->status.bristats[1].link_stats.rx_bad =
 577                         (unsigned long)rcvmsg.msg_data.byte_array[44];
 578         }
 579
 580         /*
 581          * Get the SPIDs
 582          */
 583         for (i = 0 ; i < BRI_CHANNELS ; i++) {
 584                 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0,
 585                         ceReqCallGetSPID, i+1, 0, NULL, &rcvmsg, SAR_TIMEOUT);
 586                 if (!status)
 587                         strcpy(bi->status.bristats[i].spid, rcvmsg.msg_data.byte_array);
 588         }
 589
 590         /*
 591          * Get the DNs
 592          */
 593         for (i = 0 ; i < BRI_CHANNELS ; i++) {
 594                 status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0,
 595                         ceReqCallGetMyNumber, i+1, 0, NULL, &rcvmsg, SAR_TIMEOUT);
 596                 if (!status)
 597                         strcpy(bi->status.bristats[i].dn, rcvmsg.msg_data.byte_array);
 598         }
 599
 600         return 0;
 601 }