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[dragonfly.git] / sys / netgraph / async / ng_async.c
CommitLineData
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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 $
e7b4468c 40 * $DragonFly: src/sys/netgraph/async/ng_async.c,v 1.7 2008/01/05 14:02:39 swildner Exp $
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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"
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59#include <netgraph/ng_parse.h>
60
d2438d69 61#include <net/ppp_layer/ppp_defs.h>
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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);
e7b4468c 186 MALLOC(sc, sc_p, sizeof(*sc), M_NETGRAPH, M_NOWAIT | M_ZERO);
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187 if (sc == NULL)
188 return (ENOMEM);
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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);
201fail:
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 */
213static int
214nga_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 */
234static int
235nga_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));
5e2195bf 243 panic(__func__);
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244}
245
246/*
247 * Receive incoming control message
248 */
249static int
250nga_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
326done:
327 FREE(msg, M_NETGRAPH);
328 return (error);
329}
330
331/*
332 * Shutdown this node
333 */
334static int
335nga_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 */
353static int
354nga_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
5e2195bf 364 panic(__func__);
984263bc 365 if (!*hookp)
5e2195bf 366 panic("%s2", __func__);
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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 */
382static __inline__ void
383nga_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 */
398static int
399nga_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 */
483static int
484nga_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++;
535reset:
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 */
577static 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};