kernel tree reorganization stage 1: Major cvs repository work (not logged as
[dragonfly.git] / sys / netgraph / async / ng_async.c
CommitLineData
984263bc
MD
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 $
1f2de5d4 40 * $DragonFly: src/sys/netgraph/async/ng_async.c,v 1.3 2003/08/07 21:17:30 dillon Exp $
984263bc
MD
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>
1f2de5d4 58#include "ng_async.h"
984263bc
MD
59#include <netgraph/ng_parse.h>
60
61#include <net/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 */
69struct 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};
82typedef 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 */
90static ng_constructor_t nga_constructor;
91static ng_rcvdata_t nga_rcvdata;
92static ng_rcvmsg_t nga_rcvmsg;
93static ng_shutdown_t nga_shutdown;
94static ng_newhook_t nga_newhook;
95static ng_disconnect_t nga_disconnect;
96
97/* Helper stuff */
98static int nga_rcv_sync(const sc_p sc, struct mbuf *m, meta_p meta);
99static int nga_rcv_async(const sc_p sc, struct mbuf *m, meta_p meta);
100
101/* Parse type for struct ng_async_cfg */
102static const struct ng_parse_struct_field nga_config_type_fields[]
103 = NG_ASYNC_CONFIG_TYPE_INFO;
104static 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 */
110static const struct ng_parse_struct_field nga_stats_type_fields[]
111 = NG_ASYNC_STATS_TYPE_INFO;
112static 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 */
118static 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 */
151static 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};
166NETGRAPH_INIT(async, &typestruct);
167
168/* CRC table */
169static const u_int16_t fcstab[];
170
171/******************************************************************
172 NETGRAPH NODE METHODS
173******************************************************************/
174
175/*
176 * Initialize a new node
177 */
178static int
179nga_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);
187 if (sc == NULL)
188 return (ENOMEM);
189 bzero(sc, sizeof(*sc));
190 sc->amode = MODE_HUNT;
191 sc->cfg.accm = ~0;
192 sc->cfg.amru = NG_ASYNC_DEFAULT_MRU;
193 sc->cfg.smru = NG_ASYNC_DEFAULT_MRU;
194 MALLOC(sc->abuf, u_char *,
195 ASYNC_BUF_SIZE(sc->cfg.smru), M_NETGRAPH, M_NOWAIT);
196 if (sc->abuf == NULL)
197 goto fail;
198 MALLOC(sc->sbuf, u_char *,
199 SYNC_BUF_SIZE(sc->cfg.amru), M_NETGRAPH, M_NOWAIT);
200 if (sc->sbuf == NULL) {
201 FREE(sc->abuf, M_NETGRAPH);
202fail:
203 FREE(sc, M_NETGRAPH);
204 return (ENOMEM);
205 }
206 (*nodep)->private = sc;
207 sc->node = *nodep;
208 return (0);
209}
210
211/*
212 * Reserve a hook for a pending connection
213 */
214static int
215nga_newhook(node_p node, hook_p hook, const char *name)
216{
217 const sc_p sc = node->private;
218 hook_p *hookp;
219
220 if (!strcmp(name, NG_ASYNC_HOOK_ASYNC))
221 hookp = &sc->async;
222 else if (!strcmp(name, NG_ASYNC_HOOK_SYNC))
223 hookp = &sc->sync;
224 else
225 return (EINVAL);
226 if (*hookp)
227 return (EISCONN);
228 *hookp = hook;
229 return (0);
230}
231
232/*
233 * Receive incoming data
234 */
235static int
236nga_rcvdata(hook_p hook, struct mbuf *m, meta_p meta)
237{
238 const sc_p sc = hook->node->private;
239
240 if (hook == sc->sync)
241 return (nga_rcv_sync(sc, m, meta));
242 if (hook == sc->async)
243 return (nga_rcv_async(sc, m, meta));
244 panic(__FUNCTION__);
245}
246
247/*
248 * Receive incoming control message
249 */
250static int
251nga_rcvmsg(node_p node, struct ng_mesg *msg,
252 const char *rtn, struct ng_mesg **rptr)
253{
254 const sc_p sc = (sc_p) node->private;
255 struct ng_mesg *resp = NULL;
256 int error = 0;
257
258 switch (msg->header.typecookie) {
259 case NGM_ASYNC_COOKIE:
260 switch (msg->header.cmd) {
261 case NGM_ASYNC_CMD_GET_STATS:
262 NG_MKRESPONSE(resp, msg, sizeof(sc->stats), M_NOWAIT);
263 if (resp == NULL)
264 ERROUT(ENOMEM);
265 *((struct ng_async_stat *) resp->data) = sc->stats;
266 break;
267 case NGM_ASYNC_CMD_CLR_STATS:
268 bzero(&sc->stats, sizeof(sc->stats));
269 break;
270 case NGM_ASYNC_CMD_SET_CONFIG:
271 {
272 struct ng_async_cfg *const cfg =
273 (struct ng_async_cfg *) msg->data;
274 u_char *buf;
275
276 if (msg->header.arglen != sizeof(*cfg))
277 ERROUT(EINVAL);
278 if (cfg->amru < NG_ASYNC_MIN_MRU
279 || cfg->amru > NG_ASYNC_MAX_MRU
280 || cfg->smru < NG_ASYNC_MIN_MRU
281 || cfg->smru > NG_ASYNC_MAX_MRU)
282 ERROUT(EINVAL);
283 cfg->enabled = !!cfg->enabled; /* normalize */
284 if (cfg->smru > sc->cfg.smru) { /* reallocate buffer */
285 MALLOC(buf, u_char *, ASYNC_BUF_SIZE(cfg->smru),
286 M_NETGRAPH, M_NOWAIT);
287 if (!buf)
288 ERROUT(ENOMEM);
289 FREE(sc->abuf, M_NETGRAPH);
290 sc->abuf = buf;
291 }
292 if (cfg->amru > sc->cfg.amru) { /* reallocate buffer */
293 MALLOC(buf, u_char *, SYNC_BUF_SIZE(cfg->amru),
294 M_NETGRAPH, M_NOWAIT);
295 if (!buf)
296 ERROUT(ENOMEM);
297 FREE(sc->sbuf, M_NETGRAPH);
298 sc->sbuf = buf;
299 sc->amode = MODE_HUNT;
300 sc->slen = 0;
301 }
302 if (!cfg->enabled) {
303 sc->amode = MODE_HUNT;
304 sc->slen = 0;
305 }
306 sc->cfg = *cfg;
307 break;
308 }
309 case NGM_ASYNC_CMD_GET_CONFIG:
310 NG_MKRESPONSE(resp, msg, sizeof(sc->cfg), M_NOWAIT);
311 if (!resp)
312 ERROUT(ENOMEM);
313 *((struct ng_async_cfg *) resp->data) = sc->cfg;
314 break;
315 default:
316 ERROUT(EINVAL);
317 }
318 break;
319 default:
320 ERROUT(EINVAL);
321 }
322 if (rptr)
323 *rptr = resp;
324 else if (resp)
325 FREE(resp, M_NETGRAPH);
326
327done:
328 FREE(msg, M_NETGRAPH);
329 return (error);
330}
331
332/*
333 * Shutdown this node
334 */
335static int
336nga_shutdown(node_p node)
337{
338 const sc_p sc = node->private;
339
340 ng_cutlinks(node);
341 ng_unname(node);
342 FREE(sc->abuf, M_NETGRAPH);
343 FREE(sc->sbuf, M_NETGRAPH);
344 bzero(sc, sizeof(*sc));
345 FREE(sc, M_NETGRAPH);
346 node->private = NULL;
347 ng_unref(node);
348 return (0);
349}
350
351/*
352 * Lose a hook. When both hooks go away, we disappear.
353 */
354static int
355nga_disconnect(hook_p hook)
356{
357 const sc_p sc = hook->node->private;
358 hook_p *hookp;
359
360 if (hook == sc->async)
361 hookp = &sc->async;
362 else if (hook == sc->sync)
363 hookp = &sc->sync;
364 else
365 panic(__FUNCTION__);
366 if (!*hookp)
367 panic(__FUNCTION__ "2");
368 *hookp = NULL;
369 bzero(&sc->stats, sizeof(sc->stats));
370 sc->lasttime = 0;
371 if (hook->node->numhooks == 0)
372 ng_rmnode(hook->node);
373 return (0);
374}
375
376/******************************************************************
377 INTERNAL HELPER STUFF
378******************************************************************/
379
380/*
381 * Encode a byte into the async buffer
382 */
383static __inline__ void
384nga_async_add(const sc_p sc, u_int16_t *fcs, u_int32_t accm, int *len, u_char x)
385{
386 *fcs = PPP_FCS(*fcs, x);
387 if ((x < 32 && ((1 << x) & accm))
388 || (x == PPP_ESCAPE)
389 || (x == PPP_FLAG)) {
390 sc->abuf[(*len)++] = PPP_ESCAPE;
391 x ^= PPP_TRANS;
392 }
393 sc->abuf[(*len)++] = x;
394}
395
396/*
397 * Receive incoming synchronous data.
398 */
399static int
400nga_rcv_sync(const sc_p sc, struct mbuf *m, meta_p meta)
401{
402 struct ifnet *const rcvif = m->m_pkthdr.rcvif;
403 int alen, error = 0;
404 struct timeval time;
405 u_int16_t fcs, fcs0;
406 u_int32_t accm;
407
408#define ADD_BYTE(x) nga_async_add(sc, &fcs, accm, &alen, (x))
409
410 /* Check for bypass mode */
411 if (!sc->cfg.enabled) {
412 NG_SEND_DATA(error, sc->async, m, meta);
413 return (error);
414 }
415
416 /* Get ACCM; special case LCP frames, which use full ACCM */
417 accm = sc->cfg.accm;
418 if (m->m_pkthdr.len >= 4) {
419 static const u_char lcphdr[4] = {
420 PPP_ALLSTATIONS,
421 PPP_UI,
422 (u_char)(PPP_LCP >> 8),
423 (u_char)(PPP_LCP & 0xff)
424 };
425 u_char buf[4];
426
427 m_copydata(m, 0, 4, (caddr_t)buf);
428 if (bcmp(buf, &lcphdr, 4) == 0)
429 accm = ~0;
430 }
431
432 /* Check for overflow */
433 if (m->m_pkthdr.len > sc->cfg.smru) {
434 sc->stats.syncOverflows++;
435 NG_FREE_DATA(m, meta);
436 return (EMSGSIZE);
437 }
438
439 /* Update stats */
440 sc->stats.syncFrames++;
441 sc->stats.syncOctets += m->m_pkthdr.len;
442
443 /* Initialize async encoded version of input mbuf */
444 alen = 0;
445 fcs = PPP_INITFCS;
446
447 /* Add beginning sync flag if it's been long enough to need one */
448 getmicrotime(&time);
449 if (time.tv_sec >= sc->lasttime + 1) {
450 sc->abuf[alen++] = PPP_FLAG;
451 sc->lasttime = time.tv_sec;
452 }
453
454 /* Add packet payload */
455 while (m != NULL) {
456 while (m->m_len > 0) {
457 ADD_BYTE(*mtod(m, u_char *));
458 m->m_data++;
459 m->m_len--;
460 }
461 m = m_free(m);
462 }
463
464 /* Add checksum and final sync flag */
465 fcs0 = fcs;
466 ADD_BYTE(~fcs0 & 0xff);
467 ADD_BYTE(~fcs0 >> 8);
468 sc->abuf[alen++] = PPP_FLAG;
469
470 /* Put frame in an mbuf and ship it off */
471 if (!(m = m_devget(sc->abuf, alen, 0, rcvif, NULL))) {
472 NG_FREE_META(meta);
473 error = ENOBUFS;
474 } else
475 NG_SEND_DATA(error, sc->async, m, meta);
476 return (error);
477}
478
479/*
480 * Receive incoming asynchronous data
481 * XXX Technically, we should strip out incoming characters
482 * that are in our ACCM. Not sure if this is good or not.
483 */
484static int
485nga_rcv_async(const sc_p sc, struct mbuf * m, meta_p meta)
486{
487 struct ifnet *const rcvif = m->m_pkthdr.rcvif;
488 int error;
489
490 if (!sc->cfg.enabled) {
491 NG_SEND_DATA(error, sc->sync, m, meta);
492 return (error);
493 }
494 NG_FREE_META(meta);
495 while (m) {
496 struct mbuf *n;
497
498 for (; m->m_len > 0; m->m_data++, m->m_len--) {
499 u_char ch = *mtod(m, u_char *);
500
501 sc->stats.asyncOctets++;
502 if (ch == PPP_FLAG) { /* Flag overrides everything */
503 int skip = 0;
504
505 /* Check for runts */
506 if (sc->slen < 2) {
507 if (sc->slen > 0)
508 sc->stats.asyncRunts++;
509 goto reset;
510 }
511
512 /* Verify CRC */
513 if (sc->fcs != PPP_GOODFCS) {
514 sc->stats.asyncBadCheckSums++;
515 goto reset;
516 }
517 sc->slen -= 2;
518
519 /* Strip address and control fields */
520 if (sc->slen >= 2
521 && sc->sbuf[0] == PPP_ALLSTATIONS
522 && sc->sbuf[1] == PPP_UI)
523 skip = 2;
524
525 /* Check for frame too big */
526 if (sc->slen - skip > sc->cfg.amru) {
527 sc->stats.asyncOverflows++;
528 goto reset;
529 }
530
531 /* OK, ship it out */
532 if ((n = m_devget(sc->sbuf + skip,
533 sc->slen - skip, 0, rcvif, NULL)))
534 NG_SEND_DATA(error, sc->sync, n, meta);
535 sc->stats.asyncFrames++;
536reset:
537 sc->amode = MODE_NORMAL;
538 sc->fcs = PPP_INITFCS;
539 sc->slen = 0;
540 continue;
541 }
542 switch (sc->amode) {
543 case MODE_NORMAL:
544 if (ch == PPP_ESCAPE) {
545 sc->amode = MODE_ESC;
546 continue;
547 }
548 break;
549 case MODE_ESC:
550 ch ^= PPP_TRANS;
551 sc->amode = MODE_NORMAL;
552 break;
553 case MODE_HUNT:
554 default:
555 continue;
556 }
557
558 /* Add byte to frame */
559 if (sc->slen >= SYNC_BUF_SIZE(sc->cfg.amru)) {
560 sc->stats.asyncOverflows++;
561 sc->amode = MODE_HUNT;
562 sc->slen = 0;
563 } else {
564 sc->sbuf[sc->slen++] = ch;
565 sc->fcs = PPP_FCS(sc->fcs, ch);
566 }
567 }
568 m = m_free(m);
569 }
570 return (0);
571}
572
573/*
574 * CRC table
575 *
576 * Taken from RFC 1171 Appendix B
577 */
578static const u_int16_t fcstab[256] = {
579 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
580 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
581 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
582 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
583 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
584 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
585 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
586 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
587 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
588 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
589 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
590 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
591 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
592 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
593 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
594 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
595 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
596 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
597 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
598 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
599 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
600 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
601 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
602 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
603 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
604 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
605 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
606 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
607 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
608 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
609 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
610 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
611};