1 /* 2 * ng_async.c 3 */ 4 5 /*- 6 * Copyright (c) 1996-1999 Whistle Communications, Inc. 7 * All rights reserved. 8 * 9 * Subject to the following obligations and disclaimer of warranty, use and 10 * redistribution of this software, in source or object code forms, with or 11 * without modifications are expressly permitted by Whistle Communications; 12 * provided, however, that: 13 * 1. Any and all reproductions of the source or object code must include the 14 * copyright notice above and the following disclaimer of warranties; and 15 * 2. No rights are granted, in any manner or form, to use Whistle 16 * Communications, Inc. trademarks, including the mark "WHISTLE 17 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as 18 * such appears in the above copyright notice or in the software. 19 * 20 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND 21 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO 22 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, 23 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF 24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. 25 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY 26 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS 27 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. 28 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES 29 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING 30 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 31 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR 32 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY 33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 35 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY 36 * OF SUCH DAMAGE. 37 * 38 * Author: Archie Cobbs <archie@freebsd.org> 39 * 40 * $FreeBSD$ 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 <netgraph/ng_async.h> 59 #include <netgraph/ng_parse.h> 60 61 #include <net/ppp_defs.h> 62 63 #ifdef NG_SEPARATE_MALLOC 64 MALLOC_DEFINE(M_NETGRAPH_ASYNC, "netgraph_async", "netgraph async node "); 65 #else 66 #define M_NETGRAPH_ASYNC M_NETGRAPH 67 #endif 68 69 70 /* Async decode state */ 71 #define MODE_HUNT 0 72 #define MODE_NORMAL 1 73 #define MODE_ESC 2 74 75 /* Private data structure */ 76 struct ng_async_private { 77 node_p node; /* Our node */ 78 hook_p async; /* Asynchronous side */ 79 hook_p sync; /* Synchronous side */ 80 u_char amode; /* Async hunt/esape mode */ 81 u_int16_t fcs; /* Decoded async FCS (so far) */ 82 u_char *abuf; /* Buffer to encode sync into */ 83 u_char *sbuf; /* Buffer to decode async into */ 84 u_int slen; /* Length of data in sbuf */ 85 long lasttime; /* Time of last async packet sent */ 86 struct ng_async_cfg cfg; /* Configuration */ 87 struct ng_async_stat stats; /* Statistics */ 88 }; 89 typedef struct ng_async_private *sc_p; 90 91 /* Useful macros */ 92 #define ASYNC_BUF_SIZE(smru) (2 * (smru) + 10) 93 #define SYNC_BUF_SIZE(amru) ((amru) + 10) 94 #define ERROUT(x) do { error = (x); goto done; } while (0) 95 96 /* Netgraph methods */ 97 static ng_constructor_t nga_constructor; 98 static ng_rcvdata_t nga_rcvdata; 99 static ng_rcvmsg_t nga_rcvmsg; 100 static ng_shutdown_t nga_shutdown; 101 static ng_newhook_t nga_newhook; 102 static ng_disconnect_t nga_disconnect; 103 104 /* Helper stuff */ 105 static int nga_rcv_sync(const sc_p sc, item_p item); 106 static int nga_rcv_async(const sc_p sc, item_p item); 107 108 /* Parse type for struct ng_async_cfg */ 109 static const struct ng_parse_struct_field nga_config_type_fields[] 110 = NG_ASYNC_CONFIG_TYPE_INFO; 111 static const struct ng_parse_type nga_config_type = { 112 &ng_parse_struct_type, 113 &nga_config_type_fields 114 }; 115 116 /* Parse type for struct ng_async_stat */ 117 static const struct ng_parse_struct_field nga_stats_type_fields[] 118 = NG_ASYNC_STATS_TYPE_INFO; 119 static const struct ng_parse_type nga_stats_type = { 120 &ng_parse_struct_type, 121 &nga_stats_type_fields 122 }; 123 124 /* List of commands and how to convert arguments to/from ASCII */ 125 static const struct ng_cmdlist nga_cmdlist[] = { 126 { 127 NGM_ASYNC_COOKIE, 128 NGM_ASYNC_CMD_SET_CONFIG, 129 "setconfig", 130 &nga_config_type, 131 NULL 132 }, 133 { 134 NGM_ASYNC_COOKIE, 135 NGM_ASYNC_CMD_GET_CONFIG, 136 "getconfig", 137 NULL, 138 &nga_config_type 139 }, 140 { 141 NGM_ASYNC_COOKIE, 142 NGM_ASYNC_CMD_GET_STATS, 143 "getstats", 144 NULL, 145 &nga_stats_type 146 }, 147 { 148 NGM_ASYNC_COOKIE, 149 NGM_ASYNC_CMD_CLR_STATS, 150 "clrstats", 151 &nga_stats_type, 152 NULL 153 }, 154 { 0 } 155 }; 156 157 /* Define the netgraph node type */ 158 static struct ng_type typestruct = { 159 .version = NG_ABI_VERSION, 160 .name = NG_ASYNC_NODE_TYPE, 161 .constructor = nga_constructor, 162 .rcvmsg = nga_rcvmsg, 163 .shutdown = nga_shutdown, 164 .newhook = nga_newhook, 165 .rcvdata = nga_rcvdata, 166 .disconnect = nga_disconnect, 167 .cmdlist = nga_cmdlist 168 }; 169 NETGRAPH_INIT(async, &typestruct); 170 171 /* CRC table */ 172 static const u_int16_t fcstab[]; 173 174 /****************************************************************** 175 NETGRAPH NODE METHODS 176 ******************************************************************/ 177 178 /* 179 * Initialize a new node 180 */ 181 static int 182 nga_constructor(node_p node) 183 { 184 sc_p sc; 185 186 sc = malloc(sizeof(*sc), M_NETGRAPH_ASYNC, 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 sc->abuf = malloc(ASYNC_BUF_SIZE(sc->cfg.smru), 194 M_NETGRAPH_ASYNC, M_NOWAIT); 195 if (sc->abuf == NULL) 196 goto fail; 197 sc->sbuf = malloc(SYNC_BUF_SIZE(sc->cfg.amru), 198 M_NETGRAPH_ASYNC, M_NOWAIT); 199 if (sc->sbuf == NULL) { 200 free(sc->abuf, M_NETGRAPH_ASYNC); 201 fail: 202 free(sc, M_NETGRAPH_ASYNC); 203 return (ENOMEM); 204 } 205 NG_NODE_SET_PRIVATE(node, sc); 206 sc->node = node; 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 = NG_NODE_PRIVATE(node); 217 hook_p *hookp; 218 219 if (!strcmp(name, NG_ASYNC_HOOK_ASYNC)) { 220 /* 221 * We use a static buffer here so only one packet 222 * at a time can be allowed to travel in this direction. 223 * Force Writer semantics. 224 */ 225 NG_HOOK_FORCE_WRITER(hook); 226 hookp = &sc->async; 227 } else if (!strcmp(name, NG_ASYNC_HOOK_SYNC)) { 228 /* 229 * We use a static state here so only one packet 230 * at a time can be allowed to travel in this direction. 231 * Force Writer semantics. 232 * Since we set this for both directions 233 * we might as well set it for the whole node 234 * bit I haven;t done that (yet). 235 */ 236 NG_HOOK_FORCE_WRITER(hook); 237 hookp = &sc->sync; 238 } else { 239 return (EINVAL); 240 } 241 if (*hookp) /* actually can't happen I think [JRE] */ 242 return (EISCONN); 243 *hookp = hook; 244 return (0); 245 } 246 247 /* 248 * Receive incoming data 249 */ 250 static int 251 nga_rcvdata(hook_p hook, item_p item) 252 { 253 const sc_p sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 254 255 if (hook == sc->sync) 256 return (nga_rcv_sync(sc, item)); 257 if (hook == sc->async) 258 return (nga_rcv_async(sc, item)); 259 panic(__func__); 260 } 261 262 /* 263 * Receive incoming control message 264 */ 265 static int 266 nga_rcvmsg(node_p node, item_p item, hook_p lasthook) 267 { 268 const sc_p sc = NG_NODE_PRIVATE(node); 269 struct ng_mesg *resp = NULL; 270 int error = 0; 271 struct ng_mesg *msg; 272 273 NGI_GET_MSG(item, msg); 274 switch (msg->header.typecookie) { 275 case NGM_ASYNC_COOKIE: 276 switch (msg->header.cmd) { 277 case NGM_ASYNC_CMD_GET_STATS: 278 NG_MKRESPONSE(resp, msg, sizeof(sc->stats), M_NOWAIT); 279 if (resp == NULL) 280 ERROUT(ENOMEM); 281 *((struct ng_async_stat *) resp->data) = sc->stats; 282 break; 283 case NGM_ASYNC_CMD_CLR_STATS: 284 bzero(&sc->stats, sizeof(sc->stats)); 285 break; 286 case NGM_ASYNC_CMD_SET_CONFIG: 287 { 288 struct ng_async_cfg *const cfg = 289 (struct ng_async_cfg *) msg->data; 290 u_char *buf; 291 292 if (msg->header.arglen != sizeof(*cfg)) 293 ERROUT(EINVAL); 294 if (cfg->amru < NG_ASYNC_MIN_MRU 295 || cfg->amru > NG_ASYNC_MAX_MRU 296 || cfg->smru < NG_ASYNC_MIN_MRU 297 || cfg->smru > NG_ASYNC_MAX_MRU) 298 ERROUT(EINVAL); 299 cfg->enabled = !!cfg->enabled; /* normalize */ 300 if (cfg->smru > sc->cfg.smru) { /* reallocate buffer */ 301 buf = malloc(ASYNC_BUF_SIZE(cfg->smru), 302 M_NETGRAPH_ASYNC, M_NOWAIT); 303 if (!buf) 304 ERROUT(ENOMEM); 305 free(sc->abuf, M_NETGRAPH_ASYNC); 306 sc->abuf = buf; 307 } 308 if (cfg->amru > sc->cfg.amru) { /* reallocate buffer */ 309 buf = malloc(SYNC_BUF_SIZE(cfg->amru), 310 M_NETGRAPH_ASYNC, M_NOWAIT); 311 if (!buf) 312 ERROUT(ENOMEM); 313 free(sc->sbuf, M_NETGRAPH_ASYNC); 314 sc->sbuf = buf; 315 sc->amode = MODE_HUNT; 316 sc->slen = 0; 317 } 318 if (!cfg->enabled) { 319 sc->amode = MODE_HUNT; 320 sc->slen = 0; 321 } 322 sc->cfg = *cfg; 323 break; 324 } 325 case NGM_ASYNC_CMD_GET_CONFIG: 326 NG_MKRESPONSE(resp, msg, sizeof(sc->cfg), M_NOWAIT); 327 if (!resp) 328 ERROUT(ENOMEM); 329 *((struct ng_async_cfg *) resp->data) = sc->cfg; 330 break; 331 default: 332 ERROUT(EINVAL); 333 } 334 break; 335 default: 336 ERROUT(EINVAL); 337 } 338 done: 339 NG_RESPOND_MSG(error, node, item, resp); 340 NG_FREE_MSG(msg); 341 return (error); 342 } 343 344 /* 345 * Shutdown this node 346 */ 347 static int 348 nga_shutdown(node_p node) 349 { 350 const sc_p sc = NG_NODE_PRIVATE(node); 351 352 free(sc->abuf, M_NETGRAPH_ASYNC); 353 free(sc->sbuf, M_NETGRAPH_ASYNC); 354 bzero(sc, sizeof(*sc)); 355 free(sc, M_NETGRAPH_ASYNC); 356 NG_NODE_SET_PRIVATE(node, NULL); 357 NG_NODE_UNREF(node); 358 return (0); 359 } 360 361 /* 362 * Lose a hook. When both hooks go away, we disappear. 363 */ 364 static int 365 nga_disconnect(hook_p hook) 366 { 367 const sc_p sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 368 hook_p *hookp; 369 370 if (hook == sc->async) 371 hookp = &sc->async; 372 else if (hook == sc->sync) 373 hookp = &sc->sync; 374 else 375 panic(__func__); 376 if (!*hookp) 377 panic("%s 2", __func__); 378 *hookp = NULL; 379 bzero(&sc->stats, sizeof(sc->stats)); 380 sc->lasttime = 0; 381 if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0) 382 && (NG_NODE_IS_VALID(NG_HOOK_NODE(hook)))) 383 ng_rmnode_self(NG_HOOK_NODE(hook)); 384 return (0); 385 } 386 387 /****************************************************************** 388 INTERNAL HELPER STUFF 389 ******************************************************************/ 390 391 /* 392 * Encode a byte into the async buffer 393 */ 394 static __inline void 395 nga_async_add(const sc_p sc, u_int16_t *fcs, u_int32_t accm, int *len, u_char x) 396 { 397 *fcs = PPP_FCS(*fcs, x); 398 if ((x < 32 && ((1 << x) & accm)) 399 || (x == PPP_ESCAPE) 400 || (x == PPP_FLAG)) { 401 sc->abuf[(*len)++] = PPP_ESCAPE; 402 x ^= PPP_TRANS; 403 } 404 sc->abuf[(*len)++] = x; 405 } 406 407 /* 408 * Receive incoming synchronous data. 409 */ 410 static int 411 nga_rcv_sync(const sc_p sc, item_p item) 412 { 413 struct ifnet *rcvif; 414 int alen, error = 0; 415 struct timeval time; 416 u_int16_t fcs, fcs0; 417 u_int32_t accm; 418 struct mbuf *m; 419 420 421 #define ADD_BYTE(x) nga_async_add(sc, &fcs, accm, &alen, (x)) 422 423 /* Check for bypass mode */ 424 if (!sc->cfg.enabled) { 425 NG_FWD_ITEM_HOOK(error, item, sc->async ); 426 return (error); 427 } 428 NGI_GET_M(item, m); 429 430 rcvif = m->m_pkthdr.rcvif; 431 432 /* Get ACCM; special case LCP frames, which use full ACCM */ 433 accm = sc->cfg.accm; 434 if (m->m_pkthdr.len >= 4) { 435 static const u_char lcphdr[4] = { 436 PPP_ALLSTATIONS, 437 PPP_UI, 438 (u_char)(PPP_LCP >> 8), 439 (u_char)(PPP_LCP & 0xff) 440 }; 441 u_char buf[4]; 442 443 m_copydata(m, 0, 4, (caddr_t)buf); 444 if (bcmp(buf, &lcphdr, 4) == 0) 445 accm = ~0; 446 } 447 448 /* Check for overflow */ 449 if (m->m_pkthdr.len > sc->cfg.smru) { 450 sc->stats.syncOverflows++; 451 NG_FREE_M(m); 452 NG_FREE_ITEM(item); 453 return (EMSGSIZE); 454 } 455 456 /* Update stats */ 457 sc->stats.syncFrames++; 458 sc->stats.syncOctets += m->m_pkthdr.len; 459 460 /* Initialize async encoded version of input mbuf */ 461 alen = 0; 462 fcs = PPP_INITFCS; 463 464 /* Add beginning sync flag if it's been long enough to need one */ 465 getmicrotime(&time); 466 if (time.tv_sec >= sc->lasttime + 1) { 467 sc->abuf[alen++] = PPP_FLAG; 468 sc->lasttime = time.tv_sec; 469 } 470 471 /* Add packet payload */ 472 while (m != NULL) { 473 while (m->m_len > 0) { 474 ADD_BYTE(*mtod(m, u_char *)); 475 m->m_data++; 476 m->m_len--; 477 } 478 m = m_free(m); 479 } 480 481 /* Add checksum and final sync flag */ 482 fcs0 = fcs; 483 ADD_BYTE(~fcs0 & 0xff); 484 ADD_BYTE(~fcs0 >> 8); 485 sc->abuf[alen++] = PPP_FLAG; 486 487 /* Put frame in an mbuf and ship it off */ 488 if (!(m = m_devget(sc->abuf, alen, 0, rcvif, NULL))) { 489 NG_FREE_ITEM(item); 490 error = ENOBUFS; 491 } else { 492 NG_FWD_NEW_DATA(error, item, sc->async, m); 493 } 494 return (error); 495 } 496 497 /* 498 * Receive incoming asynchronous data 499 * XXX Technically, we should strip out incoming characters 500 * that are in our ACCM. Not sure if this is good or not. 501 */ 502 static int 503 nga_rcv_async(const sc_p sc, item_p item) 504 { 505 struct ifnet *rcvif; 506 int error; 507 struct mbuf *m; 508 509 if (!sc->cfg.enabled) { 510 NG_FWD_ITEM_HOOK(error, item, sc->sync); 511 return (error); 512 } 513 NGI_GET_M(item, m); 514 rcvif = m->m_pkthdr.rcvif; 515 while (m) { 516 struct mbuf *n; 517 518 for (; m->m_len > 0; m->m_data++, m->m_len--) { 519 u_char ch = *mtod(m, u_char *); 520 521 sc->stats.asyncOctets++; 522 if (ch == PPP_FLAG) { /* Flag overrides everything */ 523 int skip = 0; 524 525 /* Check for runts */ 526 if (sc->slen < 2) { 527 if (sc->slen > 0) 528 sc->stats.asyncRunts++; 529 goto reset; 530 } 531 532 /* Verify CRC */ 533 if (sc->fcs != PPP_GOODFCS) { 534 sc->stats.asyncBadCheckSums++; 535 goto reset; 536 } 537 sc->slen -= 2; 538 539 /* Strip address and control fields */ 540 if (sc->slen >= 2 541 && sc->sbuf[0] == PPP_ALLSTATIONS 542 && sc->sbuf[1] == PPP_UI) 543 skip = 2; 544 545 /* Check for frame too big */ 546 if (sc->slen - skip > sc->cfg.amru) { 547 sc->stats.asyncOverflows++; 548 goto reset; 549 } 550 551 /* OK, ship it out */ 552 if ((n = m_devget(sc->sbuf + skip, 553 sc->slen - skip, 0, rcvif, NULL))) { 554 if (item) { /* sets NULL -> item */ 555 NG_FWD_NEW_DATA(error, item, 556 sc->sync, n); 557 } else { 558 NG_SEND_DATA_ONLY(error, 559 sc->sync ,n); 560 } 561 } 562 sc->stats.asyncFrames++; 563 reset: 564 sc->amode = MODE_NORMAL; 565 sc->fcs = PPP_INITFCS; 566 sc->slen = 0; 567 continue; 568 } 569 switch (sc->amode) { 570 case MODE_NORMAL: 571 if (ch == PPP_ESCAPE) { 572 sc->amode = MODE_ESC; 573 continue; 574 } 575 break; 576 case MODE_ESC: 577 ch ^= PPP_TRANS; 578 sc->amode = MODE_NORMAL; 579 break; 580 case MODE_HUNT: 581 default: 582 continue; 583 } 584 585 /* Add byte to frame */ 586 if (sc->slen >= SYNC_BUF_SIZE(sc->cfg.amru)) { 587 sc->stats.asyncOverflows++; 588 sc->amode = MODE_HUNT; 589 sc->slen = 0; 590 } else { 591 sc->sbuf[sc->slen++] = ch; 592 sc->fcs = PPP_FCS(sc->fcs, ch); 593 } 594 } 595 m = m_free(m); 596 } 597 if (item) 598 NG_FREE_ITEM(item); 599 return (0); 600 } 601 602 /* 603 * CRC table 604 * 605 * Taken from RFC 1171 Appendix B 606 */ 607 static const u_int16_t fcstab[256] = { 608 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, 609 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, 610 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, 611 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, 612 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, 613 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, 614 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, 615 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, 616 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, 617 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, 618 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, 619 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, 620 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, 621 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, 622 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, 623 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, 624 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, 625 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, 626 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, 627 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, 628 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, 629 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, 630 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, 631 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, 632 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, 633 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, 634 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, 635 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, 636 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, 637 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, 638 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, 639 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 640 }; 641