1 2 /* 3 * ng_async.c 4 * 5 * Copyright (c) 1996-1999 Whistle Communications, Inc. 6 * All rights reserved. 7 * 8 * Subject to the following obligations and disclaimer of warranty, use and 9 * redistribution of this software, in source or object code forms, with or 10 * without modifications are expressly permitted by Whistle Communications; 11 * provided, however, that: 12 * 1. Any and all reproductions of the source or object code must include the 13 * copyright notice above and the following disclaimer of warranties; and 14 * 2. No rights are granted, in any manner or form, to use Whistle 15 * Communications, Inc. trademarks, including the mark "WHISTLE 16 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as 17 * such appears in the above copyright notice or in the software. 18 * 19 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND 20 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO 21 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, 22 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF 23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. 24 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY 25 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS 26 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. 27 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES 28 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING 29 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 30 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR 31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 34 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY 35 * OF SUCH DAMAGE. 36 * 37 * Author: Archie Cobbs <archie@freebsd.org> 38 * 39 * $FreeBSD: src/sys/netgraph/ng_async.c,v 1.6.2.5 2002/07/02 23:44:02 archie Exp $ 40 * $DragonFly: src/sys/netgraph/async/ng_async.c,v 1.7 2008/01/05 14:02:39 swildner Exp $ 41 * $Whistle: ng_async.c,v 1.17 1999/11/01 09:24:51 julian Exp $ 42 */ 43 44 /* 45 * This node type implements a PPP style sync <-> async converter. 46 * See RFC 1661 for details of how asynchronous encoding works. 47 */ 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/kernel.h> 52 #include <sys/mbuf.h> 53 #include <sys/malloc.h> 54 #include <sys/errno.h> 55 56 #include <netgraph/ng_message.h> 57 #include <netgraph/netgraph.h> 58 #include "ng_async.h" 59 #include <netgraph/ng_parse.h> 60 61 #include <net/ppp_layer/ppp_defs.h> 62 63 /* Async decode state */ 64 #define MODE_HUNT 0 65 #define MODE_NORMAL 1 66 #define MODE_ESC 2 67 68 /* Private data structure */ 69 struct ng_async_private { 70 node_p node; /* Our node */ 71 hook_p async; /* Asynchronous side */ 72 hook_p sync; /* Synchronous side */ 73 u_char amode; /* Async hunt/esape mode */ 74 u_int16_t fcs; /* Decoded async FCS (so far) */ 75 u_char *abuf; /* Buffer to encode sync into */ 76 u_char *sbuf; /* Buffer to decode async into */ 77 u_int slen; /* Length of data in sbuf */ 78 long lasttime; /* Time of last async packet sent */ 79 struct ng_async_cfg cfg; /* Configuration */ 80 struct ng_async_stat stats; /* Statistics */ 81 }; 82 typedef struct ng_async_private *sc_p; 83 84 /* Useful macros */ 85 #define ASYNC_BUF_SIZE(smru) (2 * (smru) + 10) 86 #define SYNC_BUF_SIZE(amru) ((amru) + 10) 87 #define ERROUT(x) do { error = (x); goto done; } while (0) 88 89 /* Netgraph methods */ 90 static ng_constructor_t nga_constructor; 91 static ng_rcvdata_t nga_rcvdata; 92 static ng_rcvmsg_t nga_rcvmsg; 93 static ng_shutdown_t nga_shutdown; 94 static ng_newhook_t nga_newhook; 95 static ng_disconnect_t nga_disconnect; 96 97 /* Helper stuff */ 98 static int nga_rcv_sync(const sc_p sc, struct mbuf *m, meta_p meta); 99 static int nga_rcv_async(const sc_p sc, struct mbuf *m, meta_p meta); 100 101 /* Parse type for struct ng_async_cfg */ 102 static const struct ng_parse_struct_field nga_config_type_fields[] 103 = NG_ASYNC_CONFIG_TYPE_INFO; 104 static const struct ng_parse_type nga_config_type = { 105 &ng_parse_struct_type, 106 &nga_config_type_fields 107 }; 108 109 /* Parse type for struct ng_async_stat */ 110 static const struct ng_parse_struct_field nga_stats_type_fields[] 111 = NG_ASYNC_STATS_TYPE_INFO; 112 static const struct ng_parse_type nga_stats_type = { 113 &ng_parse_struct_type, 114 &nga_stats_type_fields 115 }; 116 117 /* List of commands and how to convert arguments to/from ASCII */ 118 static const struct ng_cmdlist nga_cmdlist[] = { 119 { 120 NGM_ASYNC_COOKIE, 121 NGM_ASYNC_CMD_SET_CONFIG, 122 "setconfig", 123 &nga_config_type, 124 NULL 125 }, 126 { 127 NGM_ASYNC_COOKIE, 128 NGM_ASYNC_CMD_GET_CONFIG, 129 "getconfig", 130 NULL, 131 &nga_config_type 132 }, 133 { 134 NGM_ASYNC_COOKIE, 135 NGM_ASYNC_CMD_GET_STATS, 136 "getstats", 137 NULL, 138 &nga_stats_type 139 }, 140 { 141 NGM_ASYNC_COOKIE, 142 NGM_ASYNC_CMD_CLR_STATS, 143 "clrstats", 144 &nga_stats_type, 145 NULL 146 }, 147 { 0 } 148 }; 149 150 /* Define the netgraph node type */ 151 static struct ng_type typestruct = { 152 NG_VERSION, 153 NG_ASYNC_NODE_TYPE, 154 NULL, 155 nga_constructor, 156 nga_rcvmsg, 157 nga_shutdown, 158 nga_newhook, 159 NULL, 160 NULL, 161 nga_rcvdata, 162 nga_rcvdata, 163 nga_disconnect, 164 nga_cmdlist 165 }; 166 NETGRAPH_INIT(async, &typestruct); 167 168 /* CRC table */ 169 static const u_int16_t fcstab[]; 170 171 /****************************************************************** 172 NETGRAPH NODE METHODS 173 ******************************************************************/ 174 175 /* 176 * Initialize a new node 177 */ 178 static int 179 nga_constructor(node_p *nodep) 180 { 181 sc_p sc; 182 int error; 183 184 if ((error = ng_make_node_common(&typestruct, nodep))) 185 return (error); 186 MALLOC(sc, sc_p, sizeof(*sc), M_NETGRAPH, M_NOWAIT | M_ZERO); 187 if (sc == NULL) 188 return (ENOMEM); 189 sc->amode = MODE_HUNT; 190 sc->cfg.accm = ~0; 191 sc->cfg.amru = NG_ASYNC_DEFAULT_MRU; 192 sc->cfg.smru = NG_ASYNC_DEFAULT_MRU; 193 MALLOC(sc->abuf, u_char *, 194 ASYNC_BUF_SIZE(sc->cfg.smru), M_NETGRAPH, M_NOWAIT); 195 if (sc->abuf == NULL) 196 goto fail; 197 MALLOC(sc->sbuf, u_char *, 198 SYNC_BUF_SIZE(sc->cfg.amru), M_NETGRAPH, M_NOWAIT); 199 if (sc->sbuf == NULL) { 200 FREE(sc->abuf, M_NETGRAPH); 201 fail: 202 FREE(sc, M_NETGRAPH); 203 return (ENOMEM); 204 } 205 (*nodep)->private = sc; 206 sc->node = *nodep; 207 return (0); 208 } 209 210 /* 211 * Reserve a hook for a pending connection 212 */ 213 static int 214 nga_newhook(node_p node, hook_p hook, const char *name) 215 { 216 const sc_p sc = node->private; 217 hook_p *hookp; 218 219 if (!strcmp(name, NG_ASYNC_HOOK_ASYNC)) 220 hookp = &sc->async; 221 else if (!strcmp(name, NG_ASYNC_HOOK_SYNC)) 222 hookp = &sc->sync; 223 else 224 return (EINVAL); 225 if (*hookp) 226 return (EISCONN); 227 *hookp = hook; 228 return (0); 229 } 230 231 /* 232 * Receive incoming data 233 */ 234 static int 235 nga_rcvdata(hook_p hook, struct mbuf *m, meta_p meta) 236 { 237 const sc_p sc = hook->node->private; 238 239 if (hook == sc->sync) 240 return (nga_rcv_sync(sc, m, meta)); 241 if (hook == sc->async) 242 return (nga_rcv_async(sc, m, meta)); 243 panic(__func__); 244 } 245 246 /* 247 * Receive incoming control message 248 */ 249 static int 250 nga_rcvmsg(node_p node, struct ng_mesg *msg, 251 const char *rtn, struct ng_mesg **rptr) 252 { 253 const sc_p sc = (sc_p) node->private; 254 struct ng_mesg *resp = NULL; 255 int error = 0; 256 257 switch (msg->header.typecookie) { 258 case NGM_ASYNC_COOKIE: 259 switch (msg->header.cmd) { 260 case NGM_ASYNC_CMD_GET_STATS: 261 NG_MKRESPONSE(resp, msg, sizeof(sc->stats), M_NOWAIT); 262 if (resp == NULL) 263 ERROUT(ENOMEM); 264 *((struct ng_async_stat *) resp->data) = sc->stats; 265 break; 266 case NGM_ASYNC_CMD_CLR_STATS: 267 bzero(&sc->stats, sizeof(sc->stats)); 268 break; 269 case NGM_ASYNC_CMD_SET_CONFIG: 270 { 271 struct ng_async_cfg *const cfg = 272 (struct ng_async_cfg *) msg->data; 273 u_char *buf; 274 275 if (msg->header.arglen != sizeof(*cfg)) 276 ERROUT(EINVAL); 277 if (cfg->amru < NG_ASYNC_MIN_MRU 278 || cfg->amru > NG_ASYNC_MAX_MRU 279 || cfg->smru < NG_ASYNC_MIN_MRU 280 || cfg->smru > NG_ASYNC_MAX_MRU) 281 ERROUT(EINVAL); 282 cfg->enabled = !!cfg->enabled; /* normalize */ 283 if (cfg->smru > sc->cfg.smru) { /* reallocate buffer */ 284 MALLOC(buf, u_char *, ASYNC_BUF_SIZE(cfg->smru), 285 M_NETGRAPH, M_NOWAIT); 286 if (!buf) 287 ERROUT(ENOMEM); 288 FREE(sc->abuf, M_NETGRAPH); 289 sc->abuf = buf; 290 } 291 if (cfg->amru > sc->cfg.amru) { /* reallocate buffer */ 292 MALLOC(buf, u_char *, SYNC_BUF_SIZE(cfg->amru), 293 M_NETGRAPH, M_NOWAIT); 294 if (!buf) 295 ERROUT(ENOMEM); 296 FREE(sc->sbuf, M_NETGRAPH); 297 sc->sbuf = buf; 298 sc->amode = MODE_HUNT; 299 sc->slen = 0; 300 } 301 if (!cfg->enabled) { 302 sc->amode = MODE_HUNT; 303 sc->slen = 0; 304 } 305 sc->cfg = *cfg; 306 break; 307 } 308 case NGM_ASYNC_CMD_GET_CONFIG: 309 NG_MKRESPONSE(resp, msg, sizeof(sc->cfg), M_NOWAIT); 310 if (!resp) 311 ERROUT(ENOMEM); 312 *((struct ng_async_cfg *) resp->data) = sc->cfg; 313 break; 314 default: 315 ERROUT(EINVAL); 316 } 317 break; 318 default: 319 ERROUT(EINVAL); 320 } 321 if (rptr) 322 *rptr = resp; 323 else if (resp) 324 FREE(resp, M_NETGRAPH); 325 326 done: 327 FREE(msg, M_NETGRAPH); 328 return (error); 329 } 330 331 /* 332 * Shutdown this node 333 */ 334 static int 335 nga_shutdown(node_p node) 336 { 337 const sc_p sc = node->private; 338 339 ng_cutlinks(node); 340 ng_unname(node); 341 FREE(sc->abuf, M_NETGRAPH); 342 FREE(sc->sbuf, M_NETGRAPH); 343 bzero(sc, sizeof(*sc)); 344 FREE(sc, M_NETGRAPH); 345 node->private = NULL; 346 ng_unref(node); 347 return (0); 348 } 349 350 /* 351 * Lose a hook. When both hooks go away, we disappear. 352 */ 353 static int 354 nga_disconnect(hook_p hook) 355 { 356 const sc_p sc = hook->node->private; 357 hook_p *hookp; 358 359 if (hook == sc->async) 360 hookp = &sc->async; 361 else if (hook == sc->sync) 362 hookp = &sc->sync; 363 else 364 panic(__func__); 365 if (!*hookp) 366 panic("%s2", __func__); 367 *hookp = NULL; 368 bzero(&sc->stats, sizeof(sc->stats)); 369 sc->lasttime = 0; 370 if (hook->node->numhooks == 0) 371 ng_rmnode(hook->node); 372 return (0); 373 } 374 375 /****************************************************************** 376 INTERNAL HELPER STUFF 377 ******************************************************************/ 378 379 /* 380 * Encode a byte into the async buffer 381 */ 382 static __inline__ void 383 nga_async_add(const sc_p sc, u_int16_t *fcs, u_int32_t accm, int *len, u_char x) 384 { 385 *fcs = PPP_FCS(*fcs, x); 386 if ((x < 32 && ((1 << x) & accm)) 387 || (x == PPP_ESCAPE) 388 || (x == PPP_FLAG)) { 389 sc->abuf[(*len)++] = PPP_ESCAPE; 390 x ^= PPP_TRANS; 391 } 392 sc->abuf[(*len)++] = x; 393 } 394 395 /* 396 * Receive incoming synchronous data. 397 */ 398 static int 399 nga_rcv_sync(const sc_p sc, struct mbuf *m, meta_p meta) 400 { 401 struct ifnet *const rcvif = m->m_pkthdr.rcvif; 402 int alen, error = 0; 403 struct timeval time; 404 u_int16_t fcs, fcs0; 405 u_int32_t accm; 406 407 #define ADD_BYTE(x) nga_async_add(sc, &fcs, accm, &alen, (x)) 408 409 /* Check for bypass mode */ 410 if (!sc->cfg.enabled) { 411 NG_SEND_DATA(error, sc->async, m, meta); 412 return (error); 413 } 414 415 /* Get ACCM; special case LCP frames, which use full ACCM */ 416 accm = sc->cfg.accm; 417 if (m->m_pkthdr.len >= 4) { 418 static const u_char lcphdr[4] = { 419 PPP_ALLSTATIONS, 420 PPP_UI, 421 (u_char)(PPP_LCP >> 8), 422 (u_char)(PPP_LCP & 0xff) 423 }; 424 u_char buf[4]; 425 426 m_copydata(m, 0, 4, (caddr_t)buf); 427 if (bcmp(buf, &lcphdr, 4) == 0) 428 accm = ~0; 429 } 430 431 /* Check for overflow */ 432 if (m->m_pkthdr.len > sc->cfg.smru) { 433 sc->stats.syncOverflows++; 434 NG_FREE_DATA(m, meta); 435 return (EMSGSIZE); 436 } 437 438 /* Update stats */ 439 sc->stats.syncFrames++; 440 sc->stats.syncOctets += m->m_pkthdr.len; 441 442 /* Initialize async encoded version of input mbuf */ 443 alen = 0; 444 fcs = PPP_INITFCS; 445 446 /* Add beginning sync flag if it's been long enough to need one */ 447 getmicrotime(&time); 448 if (time.tv_sec >= sc->lasttime + 1) { 449 sc->abuf[alen++] = PPP_FLAG; 450 sc->lasttime = time.tv_sec; 451 } 452 453 /* Add packet payload */ 454 while (m != NULL) { 455 while (m->m_len > 0) { 456 ADD_BYTE(*mtod(m, u_char *)); 457 m->m_data++; 458 m->m_len--; 459 } 460 m = m_free(m); 461 } 462 463 /* Add checksum and final sync flag */ 464 fcs0 = fcs; 465 ADD_BYTE(~fcs0 & 0xff); 466 ADD_BYTE(~fcs0 >> 8); 467 sc->abuf[alen++] = PPP_FLAG; 468 469 /* Put frame in an mbuf and ship it off */ 470 if (!(m = m_devget(sc->abuf, alen, 0, rcvif, NULL))) { 471 NG_FREE_META(meta); 472 error = ENOBUFS; 473 } else 474 NG_SEND_DATA(error, sc->async, m, meta); 475 return (error); 476 } 477 478 /* 479 * Receive incoming asynchronous data 480 * XXX Technically, we should strip out incoming characters 481 * that are in our ACCM. Not sure if this is good or not. 482 */ 483 static int 484 nga_rcv_async(const sc_p sc, struct mbuf * m, meta_p meta) 485 { 486 struct ifnet *const rcvif = m->m_pkthdr.rcvif; 487 int error; 488 489 if (!sc->cfg.enabled) { 490 NG_SEND_DATA(error, sc->sync, m, meta); 491 return (error); 492 } 493 NG_FREE_META(meta); 494 while (m) { 495 struct mbuf *n; 496 497 for (; m->m_len > 0; m->m_data++, m->m_len--) { 498 u_char ch = *mtod(m, u_char *); 499 500 sc->stats.asyncOctets++; 501 if (ch == PPP_FLAG) { /* Flag overrides everything */ 502 int skip = 0; 503 504 /* Check for runts */ 505 if (sc->slen < 2) { 506 if (sc->slen > 0) 507 sc->stats.asyncRunts++; 508 goto reset; 509 } 510 511 /* Verify CRC */ 512 if (sc->fcs != PPP_GOODFCS) { 513 sc->stats.asyncBadCheckSums++; 514 goto reset; 515 } 516 sc->slen -= 2; 517 518 /* Strip address and control fields */ 519 if (sc->slen >= 2 520 && sc->sbuf[0] == PPP_ALLSTATIONS 521 && sc->sbuf[1] == PPP_UI) 522 skip = 2; 523 524 /* Check for frame too big */ 525 if (sc->slen - skip > sc->cfg.amru) { 526 sc->stats.asyncOverflows++; 527 goto reset; 528 } 529 530 /* OK, ship it out */ 531 if ((n = m_devget(sc->sbuf + skip, 532 sc->slen - skip, 0, rcvif, NULL))) 533 NG_SEND_DATA(error, sc->sync, n, meta); 534 sc->stats.asyncFrames++; 535 reset: 536 sc->amode = MODE_NORMAL; 537 sc->fcs = PPP_INITFCS; 538 sc->slen = 0; 539 continue; 540 } 541 switch (sc->amode) { 542 case MODE_NORMAL: 543 if (ch == PPP_ESCAPE) { 544 sc->amode = MODE_ESC; 545 continue; 546 } 547 break; 548 case MODE_ESC: 549 ch ^= PPP_TRANS; 550 sc->amode = MODE_NORMAL; 551 break; 552 case MODE_HUNT: 553 default: 554 continue; 555 } 556 557 /* Add byte to frame */ 558 if (sc->slen >= SYNC_BUF_SIZE(sc->cfg.amru)) { 559 sc->stats.asyncOverflows++; 560 sc->amode = MODE_HUNT; 561 sc->slen = 0; 562 } else { 563 sc->sbuf[sc->slen++] = ch; 564 sc->fcs = PPP_FCS(sc->fcs, ch); 565 } 566 } 567 m = m_free(m); 568 } 569 return (0); 570 } 571 572 /* 573 * CRC table 574 * 575 * Taken from RFC 1171 Appendix B 576 */ 577 static const u_int16_t fcstab[256] = { 578 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, 579 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, 580 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, 581 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, 582 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, 583 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, 584 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, 585 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, 586 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, 587 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, 588 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, 589 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, 590 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, 591 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, 592 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, 593 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, 594 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, 595 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, 596 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, 597 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, 598 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, 599 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, 600 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, 601 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, 602 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, 603 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, 604 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, 605 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, 606 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, 607 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, 608 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, 609 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 610 }; 611