| 1 | /* |
| 2 | * Copyright (c) 1997, 2001 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 | * i4btrc - device driver for trace data read device |
| 28 | * --------------------------------------------------- |
| 29 | * |
| 30 | * last edit-date: [Sat Aug 11 18:07:15 2001] |
| 31 | * |
| 32 | * $FreeBSD: src/sys/i4b/driver/i4b_trace.c,v 1.9.2.3 2001/08/12 16:22:48 hm Exp $ |
| 33 | * $DragonFly: src/sys/net/i4b/driver/i4b_trace.c,v 1.3 2003/07/19 21:14:37 dillon Exp $ |
| 34 | * |
| 35 | * NOTE: the code assumes that SPLI4B >= splimp ! |
| 36 | * |
| 37 | *---------------------------------------------------------------------------*/ |
| 38 | |
| 39 | #include "i4btrc.h" |
| 40 | |
| 41 | #if NI4BTRC > 0 |
| 42 | |
| 43 | #include <sys/param.h> |
| 44 | #include <sys/systm.h> |
| 45 | |
| 46 | #if defined(__FreeBSD__) && __FreeBSD__ >= 3 |
| 47 | #include <sys/ioccom.h> |
| 48 | #else |
| 49 | #include <sys/ioctl.h> |
| 50 | #endif |
| 51 | |
| 52 | #include <sys/conf.h> |
| 53 | #include <sys/uio.h> |
| 54 | #include <sys/kernel.h> |
| 55 | #include <sys/mbuf.h> |
| 56 | #include <sys/socket.h> |
| 57 | #include <net/if.h> |
| 58 | #include <sys/tty.h> |
| 59 | |
| 60 | #ifdef __FreeBSD__ |
| 61 | |
| 62 | #ifdef DEVFS |
| 63 | #include <sys/devfsext.h> |
| 64 | #endif |
| 65 | |
| 66 | #include <machine/i4b_trace.h> |
| 67 | #include <machine/i4b_ioctl.h> |
| 68 | |
| 69 | #else |
| 70 | |
| 71 | #include <i4b/i4b_trace.h> |
| 72 | #include <i4b/i4b_ioctl.h> |
| 73 | |
| 74 | #endif |
| 75 | |
| 76 | #include <i4b/include/i4b_mbuf.h> |
| 77 | #include <i4b/include/i4b_global.h> |
| 78 | #include <i4b/include/i4b_l3l4.h> |
| 79 | |
| 80 | #ifndef __FreeBSD__ |
| 81 | #define memcpy(d,s,l) bcopy(s,d,l) |
| 82 | #endif |
| 83 | |
| 84 | static struct ifqueue trace_queue[NI4BTRC]; |
| 85 | static int device_state[NI4BTRC]; |
| 86 | #define ST_IDLE 0x00 |
| 87 | #define ST_ISOPEN 0x01 |
| 88 | #define ST_WAITDATA 0x02 |
| 89 | |
| 90 | #if defined(__FreeBSD__) && __FreeBSD__ == 3 |
| 91 | #ifdef DEVFS |
| 92 | static void *devfs_token[NI4BTRC]; |
| 93 | #endif |
| 94 | #endif |
| 95 | |
| 96 | static int analyzemode = 0; |
| 97 | static int rxunit = -1; |
| 98 | static int txunit = -1; |
| 99 | static int outunit = -1; |
| 100 | |
| 101 | #ifndef __FreeBSD__ |
| 102 | |
| 103 | #define PDEVSTATIC /* - not static - */ |
| 104 | void i4btrcattach __P((void)); |
| 105 | int i4btrcopen __P((dev_t dev, int flag, int fmt, struct proc *p)); |
| 106 | int i4btrcclose __P((dev_t dev, int flag, int fmt, struct proc *p)); |
| 107 | int i4btrcread __P((dev_t dev, struct uio * uio, int ioflag)); |
| 108 | |
| 109 | #ifdef __bsdi__ |
| 110 | int i4btrcioctl __P((dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)); |
| 111 | #else |
| 112 | int i4btrcioctl __P((dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)); |
| 113 | #endif |
| 114 | |
| 115 | #endif |
| 116 | |
| 117 | #if BSD > 199306 && defined(__FreeBSD__) |
| 118 | #define PDEVSTATIC static |
| 119 | static d_open_t i4btrcopen; |
| 120 | static d_close_t i4btrcclose; |
| 121 | static d_read_t i4btrcread; |
| 122 | static d_ioctl_t i4btrcioctl; |
| 123 | |
| 124 | #ifdef OS_USES_POLL |
| 125 | static d_poll_t i4btrcpoll; |
| 126 | #define POLLFIELD i4btrcpoll |
| 127 | #else |
| 128 | #define POLLFIELD noselect |
| 129 | #endif |
| 130 | |
| 131 | #define CDEV_MAJOR 59 |
| 132 | |
| 133 | static struct cdevsw i4btrc_cdevsw = { |
| 134 | /* open */ i4btrcopen, |
| 135 | /* close */ i4btrcclose, |
| 136 | /* read */ i4btrcread, |
| 137 | /* write */ nowrite, |
| 138 | /* ioctl */ i4btrcioctl, |
| 139 | /* poll */ POLLFIELD, |
| 140 | /* mmap */ nommap, |
| 141 | /* strategy */ nostrategy, |
| 142 | /* name */ "i4btrc", |
| 143 | /* maj */ CDEV_MAJOR, |
| 144 | /* dump */ nodump, |
| 145 | /* psize */ nopsize, |
| 146 | /* flags */ 0, |
| 147 | /* bmaj */ -1 |
| 148 | }; |
| 149 | |
| 150 | /*---------------------------------------------------------------------------* |
| 151 | * interface init routine |
| 152 | *---------------------------------------------------------------------------*/ |
| 153 | static |
| 154 | void i4btrcinit(void *unused) |
| 155 | { |
| 156 | cdevsw_add(&i4btrc_cdevsw); |
| 157 | } |
| 158 | |
| 159 | SYSINIT(i4btrcdev, SI_SUB_DRIVERS, |
| 160 | SI_ORDER_MIDDLE+CDEV_MAJOR, &i4btrcinit, NULL); |
| 161 | |
| 162 | static void i4btrcattach(void *); |
| 163 | PSEUDO_SET(i4btrcattach, i4b_trace); |
| 164 | |
| 165 | #endif /* BSD > 199306 && defined(__FreeBSD__) */ |
| 166 | |
| 167 | #ifdef __bsdi__ |
| 168 | #include <sys/device.h> |
| 169 | int i4btrcmatch(struct device *parent, struct cfdata *cf, void *aux); |
| 170 | void dummy_i4btrcattach(struct device*, struct device *, void *); |
| 171 | |
| 172 | #define CDEV_MAJOR 60 |
| 173 | |
| 174 | static struct cfdriver i4btrccd = |
| 175 | { NULL, "i4btrc", i4btrcmatch, dummy_i4btrcattach, DV_DULL, |
| 176 | sizeof(struct cfdriver) }; |
| 177 | struct devsw i4btrcsw = |
| 178 | { &i4btrccd, |
| 179 | i4btrcopen, i4btrcclose, i4btrcread, nowrite, |
| 180 | i4btrcioctl, seltrue, nommap, nostrat, |
| 181 | nodump, nopsize, 0, nostop |
| 182 | }; |
| 183 | |
| 184 | int |
| 185 | i4btrcmatch(struct device *parent, struct cfdata *cf, void *aux) |
| 186 | { |
| 187 | printf("i4btrcmatch: aux=0x%x\n", aux); |
| 188 | return 1; |
| 189 | } |
| 190 | void |
| 191 | dummy_i4btrcattach(struct device *parent, struct device *self, void *aux) |
| 192 | { |
| 193 | printf("dummy_i4btrcattach: aux=0x%x\n", aux); |
| 194 | } |
| 195 | #endif /* __bsdi__ */ |
| 196 | |
| 197 | int get_trace_data_from_l1(i4b_trace_hdr_t *hdr, int len, char *buf); |
| 198 | |
| 199 | /*---------------------------------------------------------------------------* |
| 200 | * interface attach routine |
| 201 | *---------------------------------------------------------------------------*/ |
| 202 | PDEVSTATIC void |
| 203 | #ifdef __FreeBSD__ |
| 204 | i4btrcattach(void *dummy) |
| 205 | #else |
| 206 | i4btrcattach() |
| 207 | #endif |
| 208 | { |
| 209 | int i; |
| 210 | |
| 211 | printf("i4btrc: %d ISDN trace device(s) attached\n", NI4BTRC); |
| 212 | |
| 213 | for(i=0; i < NI4BTRC; i++) |
| 214 | { |
| 215 | |
| 216 | #if defined(__FreeBSD__) |
| 217 | make_dev(&i4btrc_cdevsw, i, |
| 218 | UID_ROOT, GID_WHEEL, 0600, "i4btrc%d", i); |
| 219 | #endif |
| 220 | trace_queue[i].ifq_maxlen = IFQ_MAXLEN; |
| 221 | |
| 222 | #if __FreeBSD__ > 4 |
| 223 | mtx_init(&trace_queue[i].ifq_mtx, "i4b_trace", MTX_DEF); |
| 224 | #endif |
| 225 | device_state[i] = ST_IDLE; |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | /*---------------------------------------------------------------------------* |
| 230 | * get_trace_data_from_l1() |
| 231 | * ------------------------ |
| 232 | * is called from layer 1, adds timestamp to trace data and puts |
| 233 | * it into a queue, from which it can be read from the i4btrc |
| 234 | * device. The unit number in the trace header selects the minor |
| 235 | * device's queue the data is put into. |
| 236 | *---------------------------------------------------------------------------*/ |
| 237 | int |
| 238 | get_trace_data_from_l1(i4b_trace_hdr_t *hdr, int len, char *buf) |
| 239 | { |
| 240 | struct mbuf *m; |
| 241 | int x; |
| 242 | int unit; |
| 243 | int trunc = 0; |
| 244 | int totlen = len + sizeof(i4b_trace_hdr_t); |
| 245 | |
| 246 | /* |
| 247 | * for telephony (or better non-HDLC HSCX mode) we get |
| 248 | * (MCLBYTE + sizeof(i4b_trace_hdr_t)) length packets |
| 249 | * to put into the queue to userland. because of this |
| 250 | * we detect this situation, strip the length to MCLBYTES |
| 251 | * max size, and infor the userland program of this fact |
| 252 | * by putting the no of truncated bytes into hdr->trunc. |
| 253 | */ |
| 254 | |
| 255 | if(totlen > MCLBYTES) |
| 256 | { |
| 257 | trunc = 1; |
| 258 | hdr->trunc = totlen - MCLBYTES; |
| 259 | totlen = MCLBYTES; |
| 260 | } |
| 261 | else |
| 262 | { |
| 263 | hdr->trunc = 0; |
| 264 | } |
| 265 | |
| 266 | /* set length of trace record */ |
| 267 | |
| 268 | hdr->length = totlen; |
| 269 | |
| 270 | /* check valid unit no */ |
| 271 | |
| 272 | if((unit = hdr->unit) > NI4BTRC) |
| 273 | { |
| 274 | printf("i4b_trace: get_trace_data_from_l1 - unit > NI4BTRC!\n"); |
| 275 | return(0); |
| 276 | } |
| 277 | |
| 278 | /* get mbuf */ |
| 279 | |
| 280 | if(!(m = i4b_Bgetmbuf(totlen))) |
| 281 | { |
| 282 | printf("i4b_trace: get_trace_data_from_l1 - i4b_getmbuf() failed!\n"); |
| 283 | return(0); |
| 284 | } |
| 285 | |
| 286 | /* check if we are in analyzemode */ |
| 287 | |
| 288 | if(analyzemode && (unit == rxunit || unit == txunit)) |
| 289 | { |
| 290 | if(unit == rxunit) |
| 291 | hdr->dir = FROM_NT; |
| 292 | else |
| 293 | hdr->dir = FROM_TE; |
| 294 | unit = outunit; |
| 295 | } |
| 296 | |
| 297 | IF_LOCK(&trace_queue[unit]); |
| 298 | if(_IF_QFULL(&trace_queue[unit])) |
| 299 | { |
| 300 | struct mbuf *m1; |
| 301 | |
| 302 | x = SPLI4B(); |
| 303 | _IF_DEQUEUE(&trace_queue[unit], m1); |
| 304 | splx(x); |
| 305 | |
| 306 | i4b_Bfreembuf(m1); |
| 307 | } |
| 308 | |
| 309 | /* copy trace header */ |
| 310 | memcpy(m->m_data, hdr, sizeof(i4b_trace_hdr_t)); |
| 311 | |
| 312 | /* copy trace data */ |
| 313 | if(trunc) |
| 314 | memcpy(&m->m_data[sizeof(i4b_trace_hdr_t)], buf, totlen-sizeof(i4b_trace_hdr_t)); |
| 315 | else |
| 316 | memcpy(&m->m_data[sizeof(i4b_trace_hdr_t)], buf, len); |
| 317 | |
| 318 | x = SPLI4B(); |
| 319 | |
| 320 | _IF_ENQUEUE(&trace_queue[unit], m); |
| 321 | IF_UNLOCK(&trace_queue[unit]); |
| 322 | |
| 323 | if(device_state[unit] & ST_WAITDATA) |
| 324 | { |
| 325 | device_state[unit] &= ~ST_WAITDATA; |
| 326 | wakeup((caddr_t) &trace_queue[unit]); |
| 327 | } |
| 328 | |
| 329 | splx(x); |
| 330 | |
| 331 | return(1); |
| 332 | } |
| 333 | |
| 334 | /*---------------------------------------------------------------------------* |
| 335 | * open trace device |
| 336 | *---------------------------------------------------------------------------*/ |
| 337 | PDEVSTATIC int |
| 338 | i4btrcopen(dev_t dev, int flag, int fmt, struct proc *p) |
| 339 | { |
| 340 | int x; |
| 341 | int unit = minor(dev); |
| 342 | |
| 343 | if(unit >= NI4BTRC) |
| 344 | return(ENXIO); |
| 345 | |
| 346 | if(device_state[unit] & ST_ISOPEN) |
| 347 | return(EBUSY); |
| 348 | |
| 349 | if(analyzemode && (unit == outunit || unit == rxunit || unit == txunit)) |
| 350 | return(EBUSY); |
| 351 | |
| 352 | x = SPLI4B(); |
| 353 | |
| 354 | device_state[unit] = ST_ISOPEN; |
| 355 | |
| 356 | splx(x); |
| 357 | |
| 358 | return(0); |
| 359 | } |
| 360 | |
| 361 | /*---------------------------------------------------------------------------* |
| 362 | * close trace device |
| 363 | *---------------------------------------------------------------------------*/ |
| 364 | PDEVSTATIC int |
| 365 | i4btrcclose(dev_t dev, int flag, int fmt, struct proc *p) |
| 366 | { |
| 367 | int unit = minor(dev); |
| 368 | int i, x; |
| 369 | int cno = -1; |
| 370 | |
| 371 | for(i=0; i < nctrl; i++) |
| 372 | { |
| 373 | if((ctrl_desc[i].ctrl_type == CTRL_PASSIVE) && |
| 374 | (ctrl_desc[i].unit == unit)) |
| 375 | { |
| 376 | cno = i; |
| 377 | break; |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | if(analyzemode && (unit == outunit)) |
| 382 | { |
| 383 | analyzemode = 0; |
| 384 | outunit = -1; |
| 385 | |
| 386 | if(cno >= 0) |
| 387 | { |
| 388 | (*ctrl_desc[cno].N_MGMT_COMMAND)(rxunit, CMR_SETTRACE, TRACE_OFF); |
| 389 | (*ctrl_desc[cno].N_MGMT_COMMAND)(txunit, CMR_SETTRACE, TRACE_OFF); |
| 390 | } |
| 391 | rxunit = -1; |
| 392 | txunit = -1; |
| 393 | } |
| 394 | |
| 395 | if(cno >= 0) |
| 396 | { |
| 397 | (*ctrl_desc[cno].N_MGMT_COMMAND)(ctrl_desc[cno].unit, CMR_SETTRACE, TRACE_OFF); |
| 398 | } |
| 399 | |
| 400 | x = SPLI4B(); |
| 401 | device_state[unit] = ST_IDLE; |
| 402 | splx(x); |
| 403 | |
| 404 | return(0); |
| 405 | } |
| 406 | |
| 407 | /*---------------------------------------------------------------------------* |
| 408 | * read from trace device |
| 409 | *---------------------------------------------------------------------------*/ |
| 410 | PDEVSTATIC int |
| 411 | i4btrcread(dev_t dev, struct uio * uio, int ioflag) |
| 412 | { |
| 413 | struct mbuf *m; |
| 414 | int x; |
| 415 | int error = 0; |
| 416 | int unit = minor(dev); |
| 417 | |
| 418 | if(!(device_state[unit] & ST_ISOPEN)) |
| 419 | return(EIO); |
| 420 | |
| 421 | x = SPLI4B(); |
| 422 | |
| 423 | IF_LOCK(&trace_queue[unit]); |
| 424 | while(IF_QEMPTY(&trace_queue[unit]) && (device_state[unit] & ST_ISOPEN)) |
| 425 | { |
| 426 | device_state[unit] |= ST_WAITDATA; |
| 427 | |
| 428 | #if defined (__FreeBSD__) && __FreeBSD__ > 4 |
| 429 | if((error = msleep((caddr_t) &trace_queue[unit], |
| 430 | &trace_queue[unit].ifq_mtx, |
| 431 | TTIPRI | PCATCH, |
| 432 | "bitrc", 0 )) != 0) |
| 433 | #else |
| 434 | if((error = tsleep((caddr_t) &trace_queue[unit], |
| 435 | PCATCH, "bitrc", 0 )) != 0) |
| 436 | #endif |
| 437 | { |
| 438 | device_state[unit] &= ~ST_WAITDATA; |
| 439 | IF_UNLOCK(&trace_queue[unit]); |
| 440 | splx(x); |
| 441 | return(error); |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | _IF_DEQUEUE(&trace_queue[unit], m); |
| 446 | IF_UNLOCK(&trace_queue[unit]); |
| 447 | |
| 448 | if(m && m->m_len) |
| 449 | error = uiomove(m->m_data, m->m_len, uio); |
| 450 | else |
| 451 | error = EIO; |
| 452 | |
| 453 | if(m) |
| 454 | i4b_Bfreembuf(m); |
| 455 | |
| 456 | splx(x); |
| 457 | |
| 458 | return(error); |
| 459 | } |
| 460 | |
| 461 | #if defined(__FreeBSD__) && defined(OS_USES_POLL) |
| 462 | /*---------------------------------------------------------------------------* |
| 463 | * poll device |
| 464 | *---------------------------------------------------------------------------*/ |
| 465 | PDEVSTATIC int |
| 466 | i4btrcpoll(dev_t dev, int events, struct proc *p) |
| 467 | { |
| 468 | return(ENODEV); |
| 469 | } |
| 470 | #endif |
| 471 | |
| 472 | /*---------------------------------------------------------------------------* |
| 473 | * device driver ioctl routine |
| 474 | *---------------------------------------------------------------------------*/ |
| 475 | PDEVSTATIC int |
| 476 | #if defined (__FreeBSD_version) && __FreeBSD_version >= 300003 |
| 477 | i4btrcioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) |
| 478 | #elif defined(__bsdi__) |
| 479 | i4btrcioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) |
| 480 | #else |
| 481 | i4btrcioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p) |
| 482 | #endif |
| 483 | { |
| 484 | int error = 0; |
| 485 | int unit = minor(dev); |
| 486 | i4b_trace_setupa_t *tsa; |
| 487 | int i; |
| 488 | int cno = -1; |
| 489 | |
| 490 | /* find the first passive controller matching our unit no */ |
| 491 | |
| 492 | for(i=0; i < nctrl; i++) |
| 493 | { |
| 494 | if((ctrl_desc[i].ctrl_type == CTRL_PASSIVE) && |
| 495 | (ctrl_desc[i].unit == unit)) |
| 496 | { |
| 497 | cno = i; |
| 498 | break; |
| 499 | } |
| 500 | } |
| 501 | |
| 502 | switch(cmd) |
| 503 | { |
| 504 | case I4B_TRC_SET: |
| 505 | if(cno < 0) |
| 506 | return ENOTTY; |
| 507 | (*ctrl_desc[cno].N_MGMT_COMMAND)(ctrl_desc[cno].unit, CMR_SETTRACE, (void *)*(unsigned int *)data); |
| 508 | break; |
| 509 | |
| 510 | case I4B_TRC_SETA: |
| 511 | tsa = (i4b_trace_setupa_t *)data; |
| 512 | |
| 513 | if(tsa->rxunit >= 0 && tsa->rxunit < NI4BTRC) |
| 514 | rxunit = tsa->rxunit; |
| 515 | else |
| 516 | error = EINVAL; |
| 517 | |
| 518 | if(tsa->txunit >= 0 && tsa->txunit < NI4BTRC) |
| 519 | txunit = tsa->txunit; |
| 520 | else |
| 521 | error = EINVAL; |
| 522 | |
| 523 | if(error) |
| 524 | { |
| 525 | outunit = -1; |
| 526 | rxunit = -1; |
| 527 | txunit = -1; |
| 528 | } |
| 529 | else |
| 530 | { |
| 531 | if(cno < 0) |
| 532 | return ENOTTY; |
| 533 | |
| 534 | outunit = unit; |
| 535 | analyzemode = 1; |
| 536 | (*ctrl_desc[cno].N_MGMT_COMMAND)(rxunit, CMR_SETTRACE, (int *)(tsa->rxflags & (TRACE_I | TRACE_D_RX | TRACE_B_RX))); |
| 537 | (*ctrl_desc[cno].N_MGMT_COMMAND)(txunit, CMR_SETTRACE, (int *)(tsa->txflags & (TRACE_I | TRACE_D_RX | TRACE_B_RX))); |
| 538 | } |
| 539 | break; |
| 540 | |
| 541 | case I4B_TRC_RESETA: |
| 542 | analyzemode = 0; |
| 543 | outunit = -1; |
| 544 | rxunit = -1; |
| 545 | txunit = -1; |
| 546 | break; |
| 547 | |
| 548 | default: |
| 549 | error = ENOTTY; |
| 550 | break; |
| 551 | } |
| 552 | return(error); |
| 553 | } |
| 554 | |
| 555 | #endif /* NI4BTRC > 0 */ |