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comparison src/g23m-fad/rlp/rlp_sbm.c @ 1:fa8dc04885d8

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src/g23m-*: import from Magnetite
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 16 Oct 2020 06:25:50 +0000
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0:4e78acac3d88 1:fa8dc04885d8
1 /*
2 +-----------------------------------------------------------------------------
3 | Project : CSD (8411)
4 | Modul : Rlp_sbm.c
5 +-----------------------------------------------------------------------------
6 | Copyright 2002 Texas Instruments Berlin, AG
7 | All rights reserved.
8 |
9 | This file is confidential and a trade secret of Texas
10 | Instruments Berlin, AG
11 | The receipt of or possession of this file does not convey
12 | any rights to reproduce or disclose its contents or to
13 | manufacture, use, or sell anything it may describe, in
14 | whole, or in part, without the specific written consent of
15 | Texas Instruments Berlin, AG.
16 +-----------------------------------------------------------------------------
17 | Purpose : This Modul defines the send buffer manager for
18 | the component Radio Link Protocol of the mobile station
19 +-----------------------------------------------------------------------------
20 */
21
22 #ifndef RLP_SBM_C
23 #define RLP_SBM_C
24 #endif
25
26 #define ENTITY_RLP
27
28 /*==== INCLUDES ===================================================*/
29
30 #include <string.h>
31 #include "typedefs.h"
32 #include "vsi.h"
33 #include "custom.h"
34 #include "gsm.h"
35 #include "cus_rlp.h"
36 #include "prim.h"
37 #include "tok.h"
38 #include "rlp.h"
39
40 /*==== CONST =======================================================*/
41
42 /*==== TYPES =======================================================*/
43
44 /*==== VAR EXPORT ==================================================*/
45
46 /*==== VAR LOCAL ===================================================*/
47
48 /*==== FUNCTIONS ===================================================*/
49
50 /*
51 +------------------------------------------------------------------------------
52 | Function : sbmi_srej_list_delete
53 +------------------------------------------------------------------------------
54 | Description :
55 |
56 | Parameters : lo -
57 | hi -
58 |
59 | Return : -
60 +------------------------------------------------------------------------------
61 */
62
63
64 LOCAL void sbmi_srej_list_delete
65 (
66 T_SBM_BUFFER_INDEX lo,
67 T_SBM_BUFFER_INDEX hi
68 )
69 {
70 T_SBM_BUFFER_EXTIDX p, p_last;
71
72 TRACE_FUNCTION ("sbmi_srej_list_delete()");
73
74 p = rlp_data->sbm.SREJ_List;
75 p_last = SBM_INVALID_IDX;
76
77 if (lo <= hi)
78 {
79 while (p NEQ SBM_INVALID_IDX)
80 {
81 if (p >= lo AND p < hi)
82 {
83 if (p_last EQ SBM_INVALID_IDX)
84 rlp_data->sbm.SREJ_List = rlp_data->sbm.Frame[p].NextSREJ;
85 else
86 rlp_data->sbm.Frame[p_last].NextSREJ
87 = rlp_data->sbm.Frame[p].NextSREJ;
88 }
89 p_last = p;
90 p = rlp_data->sbm.Frame[p].NextSREJ;
91 }
92 }
93 else
94 {
95 while (p NEQ SBM_INVALID_IDX)
96 {
97 if (p >= lo OR p < hi)
98 {
99 if (p_last EQ SBM_INVALID_IDX)
100 rlp_data->sbm.SREJ_List = rlp_data->sbm.Frame[p].NextSREJ;
101 else
102 rlp_data->sbm.Frame[p_last].NextSREJ
103 = rlp_data->sbm.Frame[p].NextSREJ;
104 }
105 p_last = p;
106 p = rlp_data->sbm.Frame[p].NextSREJ;
107 }
108 }
109 }
110
111
112 /*
113 +------------------------------------------------------------------------------
114 | Function : sbmi_srej_list_put
115 +------------------------------------------------------------------------------
116 | Description :
117 |
118 | Parameters : p -
119 |
120 |
121 | Return : -
122 +------------------------------------------------------------------------------
123 */
124
125
126 LOCAL void sbmi_srej_list_put
127 (
128 T_SBM_BUFFER_EXTIDX p
129 )
130 {
131 TRACE_FUNCTION ("sbmi_srej_list_put()");
132
133 rlp_data->sbm.Frame[p].NextSREJ = rlp_data->sbm.SREJ_List;
134
135 rlp_data->sbm.SREJ_List = p;
136 }
137
138 /*
139 +------------------------------------------------------------------------------
140 | Function : sbmi_srej_list_get
141 +------------------------------------------------------------------------------
142 | Description :
143 |
144 | Parameters : p
145 |
146 |
147 | Return : -
148 +------------------------------------------------------------------------------
149 */
150
151
152 LOCAL void sbmi_srej_list_get
153 (
154 T_SBM_BUFFER_EXTIDX *p
155 )
156 {
157 TRACE_FUNCTION ("sbmi_srej_list_get()");
158
159 if ((*p = rlp_data->sbm.SREJ_List) NEQ SBM_INVALID_IDX)
160 rlp_data->sbm.SREJ_List = rlp_data->sbm.Frame[*p].NextSREJ;
161 }
162
163 /*
164 +------------------------------------------------------------------------------
165 | Function : sbmi_get_frame_desc
166 +------------------------------------------------------------------------------
167 | Description :
168 |
169 | Parameters : p -
170 | frameDesc -
171 |
172 | Return : -
173 +------------------------------------------------------------------------------
174 */
175
176
177 LOCAL void sbmi_get_frame_desc
178 (
179 T_SBM_BUFFER_EXTIDX p,
180 T_FRAME_DESC *frameDesc
181 )
182 {
183 TRACE_FUNCTION ("sbmi_get_frame_desc()");
184
185 if (rlp_data->sbm.Frame[p].PrimSlot1 NEQ SBM_INVALID_IDX)
186 {
187 frameDesc->Adr[0]
188 = rlp_data->sbm.Prim[rlp_data->sbm.Frame[p].PrimSlot1].Prim->sdu.buf
189 + rlp_data->sbm.Frame[p].Offset1;
190
191 frameDesc->Len[0] = rlp_data->sbm.Frame[p].Len1;
192
193 if (rlp_data->sbm.Frame[p].PrimSlot2 NEQ SBM_INVALID_IDX)
194 {
195 frameDesc->Adr[1]
196 = rlp_data->sbm.Prim[rlp_data->sbm.Frame[p].PrimSlot2].Prim->sdu.buf
197 + rlp_data->sbm.Frame[p].Offset2;
198
199 frameDesc->Len[1] = rlp_data->sbm.Frame[p].Len2;
200 }
201 else
202 {
203 frameDesc->Adr[1] = (UBYTE *) NULL;
204 frameDesc->Len[1] = 0;
205 }
206 }
207 else
208 if (rlp_data->sbm.Frame[p].PrimSlot2 NEQ SBM_INVALID_IDX)
209 {
210 frameDesc->Adr[0]
211 = rlp_data->sbm.Prim[rlp_data->sbm.Frame[p].PrimSlot2].Prim->sdu.buf
212 + rlp_data->sbm.Frame[p].Offset2;
213
214 frameDesc->Len[0] = rlp_data->sbm.Frame[p].Len2;
215
216 frameDesc->Adr[1] = (UBYTE *) NULL;
217 frameDesc->Len[1] = 0;
218 }
219 }
220
221 /*
222 +------------------------------------------------------------------------------
223 | Function : sbmi_dec_ref_count
224 +------------------------------------------------------------------------------
225 | Description :
226 |
227 | Parameters : slot -
228 |
229 |
230 | Return : -
231 +------------------------------------------------------------------------------
232 */
233
234
235 LOCAL void sbmi_dec_ref_count
236 (
237 T_SBM_PRIM_EXTIDX slot
238 )
239 {
240 TRACE_FUNCTION ("sbmi_dec_ref_count()");
241
242 if (slot NEQ SBM_INVALID_IDX)
243 {
244 if (--rlp_data->sbm.Prim[slot].RefCount EQ 0)
245 {
246 PFREE (rlp_data->sbm.Prim[slot].Prim);
247 rlp_data->sbm.Prim[slot].Prim = NULL;
248 }
249 }
250 }
251
252 /*
253 +------------------------------------------------------------------------------
254 | Function : sbmi_data_to_transmit
255 +------------------------------------------------------------------------------
256 | Description :
257 |
258 | Parameters : p -
259 | framesCouldBeSent -
260 |
261 | Return : -
262 +------------------------------------------------------------------------------
263 */
264
265
266 LOCAL void sbmi_data_to_transmit
267 (
268 T_SBM_BUFFER_EXTIDX *p,
269 BOOL *framesCouldBeSent
270 )
271 {
272 TRACE_FUNCTION ("sbmi_data_to_transmit()");
273
274 *framesCouldBeSent = FALSE;
275 sbmi_srej_list_get (p);
276
277 /*
278 * SREJ slot found ?
279 */
280 if (*p EQ SBM_INVALID_IDX)
281 {
282 /*
283 * No! - Is window open ?
284 */
285 if (rlp_data->sbm.VS NEQ (rlp_data->sbm.VA+rlp_data->sbm.K)
286 % SBM_BUF_SIZE)
287 {
288 *framesCouldBeSent = TRUE;
289 /*
290 * regular slot to send ?
291 */
292 if (rlp_data->sbm.VD NEQ rlp_data->sbm.VS)
293 {
294 *p = rlp_data->sbm.VS;
295 rlp_data->sbm.VS = (rlp_data->sbm.VS+1) % SBM_BUF_SIZE;
296
297 }
298 }
299 }
300 }
301
302 /*
303 +------------------------------------------------------------------------------
304 | Function : sbm_set_wind_size
305 +------------------------------------------------------------------------------
306 | Description :
307 |
308 | Parameters : windSize
309 |
310 |
311 | Return : -
312 +------------------------------------------------------------------------------
313 */
314
315
316 GLOBAL void sbm_set_wind_size
317 (
318 T_SBM_BUFFER_INDEX windSize
319 )
320 {
321 T_RBM_BUFFER_INDEX n;
322 T_RBM_BUFFER_INDEX nEnd;
323 T_RBM_BUFFER_INDEX oldSize;
324
325 TRACE_FUNCTION ("sbm_set_wind_size()");
326
327 oldSize = rlp_data->sbm.K;
328 rlp_data->sbm.K = windSize;
329
330 if (windSize < oldSize)
331 {
332 n = rlp_data->sbm.VA + windSize;
333 if (n >= SBM_BUF_SIZE)
334 {
335 n -= SBM_BUF_SIZE;
336 }
337 nEnd = rlp_data->sbm.VA + oldSize;
338 if (nEnd >= SBM_BUF_SIZE)
339 {
340 nEnd -= SBM_BUF_SIZE;
341 }
342 sbmi_srej_list_delete (n, nEnd);
343 }
344 }
345
346 /*
347 +------------------------------------------------------------------------------
348 | Function : sbm_init
349 +------------------------------------------------------------------------------
350 | Description :
351 |
352 | Parameters : windSize -
353 | frameSize -
354 | n2 -
355 |
356 | Return : -
357 +------------------------------------------------------------------------------
358 */
359
360 GLOBAL void sbm_init
361 (
362 T_SBM_BUFFER_INDEX windSize,
363 USHORT frameSize,
364 UBYTE n2
365 )
366 {
367 USHORT n;
368
369 TRACE_FUNCTION ("sbm_init()");
370
371 for (n = 0; n < SBM_BUF_SIZE; n++)
372 {
373 rlp_data->sbm.Frame[n].S_State = SBM_IDLE;
374 rlp_data->sbm.Frame[n].NextSREJ = SBM_INVALID_IDX;
375 rlp_data->sbm.Frame[n].PrimSlot1 = 0;
376 rlp_data->sbm.Frame[n].PrimSlot2 = 0;
377 rlp_data->sbm.Frame[n].Offset1 = 0;
378 rlp_data->sbm.Frame[n].Offset2 = 0;
379 rlp_data->sbm.Frame[n].Len1 = 0;
380 rlp_data->sbm.Frame[n].Len2 = 0;
381 }
382
383 for (n=0; n < SBM_PRIMBUF_SIZE; n++)
384 {
385 rlp_data->sbm.Prim[n].Prim = NULL;
386 rlp_data->sbm.Prim[n].RefCount = 0;
387 }
388
389 rlp_data->sbm.VA = 0;
390 rlp_data->sbm.VS = 0;
391 rlp_data->sbm.VD = 0;
392 rlp_data->sbm.LastSentFrame = SBM_INVALID_IDX;
393 rlp_data->sbm.CurrPrimSlot = 0;
394 rlp_data->sbm.CurrPrimOff = 0;
395 rlp_data->sbm.CurrPrimLen = 0;
396 rlp_data->sbm.SREJ_List = SBM_INVALID_IDX;
397 rlp_data->sbm.FrameSize = frameSize;
398
399 sbm_set_wind_size (windSize);
400 sbm_set_retrans (n2);
401 }
402
403 /*
404 +------------------------------------------------------------------------------
405 | Function : sbm_store_prim
406 +------------------------------------------------------------------------------
407 | Description :
408 |
409 | Parameters : sendPrim -
410 |
411 |
412 | Return : -
413 +------------------------------------------------------------------------------
414 */
415
416
417 GLOBAL void sbm_store_prim
418 (
419 T_SBM_PRIM *sendPrim
420 )
421 {
422
423 TRACE_FUNCTION ("sbm_store_prim()");
424
425
426 if (rlp_data->sbm.CurrPrimLen EQ 0)
427 {
428 rlp_data->sbm.Prim[rlp_data->sbm.CurrPrimSlot].Prim = sendPrim;
429 rlp_data->sbm.CurrPrimOff = sendPrim->sdu.o_buf >> 3;
430 rlp_data->sbm.CurrPrimLen = sendPrim->sdu.l_buf >> 3;
431 }
432 else if (rlp_data->sbm.CurrPrimLen > 0)
433 {
434 rlp_data->sbm.Frame[rlp_data->sbm.VD].PrimSlot1 = rlp_data->sbm.CurrPrimSlot;
435 rlp_data->sbm.Frame[rlp_data->sbm.VD].Offset1 = rlp_data->sbm.CurrPrimOff;
436 rlp_data->sbm.Frame[rlp_data->sbm.VD].Len1 = rlp_data->sbm.CurrPrimLen;
437
438 rlp_data->sbm.CurrPrimSlot = (rlp_data->sbm.CurrPrimSlot+1)
439 % SBM_PRIMBUF_SIZE;
440
441 rlp_data->sbm.Prim[rlp_data->sbm.CurrPrimSlot].RefCount++;
442
443 rlp_data->sbm.Prim[rlp_data->sbm.CurrPrimSlot].Prim = sendPrim;
444 rlp_data->sbm.CurrPrimOff = sendPrim->sdu.o_buf >> 3;
445 rlp_data->sbm.CurrPrimLen = sendPrim->sdu.l_buf >> 3;
446
447
448
449 rlp_data->sbm.Frame[rlp_data->sbm.VD].PrimSlot2 = rlp_data->sbm.CurrPrimSlot;
450 rlp_data->sbm.Frame[rlp_data->sbm.VD].Offset2 = rlp_data->sbm.CurrPrimOff;
451
452 rlp_data->sbm.Frame[rlp_data->sbm.VD].Len2
453 = (rlp_data->sbm.FrameSize - rlp_data->sbm.Frame[rlp_data->sbm.VD].Len1);
454
455 if (rlp_data->sbm.Frame[rlp_data->sbm.VD].Len2 > rlp_data->sbm.CurrPrimLen)
456 {
457 rlp_data->sbm.Frame[rlp_data->sbm.VD].Len2 = rlp_data->sbm.CurrPrimLen;
458 }
459
460 rlp_data->sbm.Frame[rlp_data->sbm.VD].S_State = SBM_SEND;
461
462 rlp_data->sbm.CurrPrimOff += rlp_data->sbm.Frame[rlp_data->sbm.VD].Len2;
463
464 rlp_data->sbm.CurrPrimLen -= rlp_data->sbm.Frame[rlp_data->sbm.VD].Len2;
465
466 rlp_data->sbm.VD = (rlp_data->sbm.VD+1) % SBM_BUF_SIZE;
467
468 }
469
470
471 while (rlp_data->sbm.CurrPrimLen >= rlp_data->sbm.FrameSize)
472 {
473 rlp_data->sbm.Frame[rlp_data->sbm.VD].PrimSlot1
474 = rlp_data->sbm.CurrPrimSlot;
475
476 rlp_data->sbm.Frame[rlp_data->sbm.VD].Offset1
477 = rlp_data->sbm.CurrPrimOff;
478
479 rlp_data->sbm.Frame[rlp_data->sbm.VD].Len1
480 = rlp_data->sbm.FrameSize;
481
482 rlp_data->sbm.CurrPrimOff += rlp_data->sbm.FrameSize;
483 rlp_data->sbm.CurrPrimLen -= rlp_data->sbm.FrameSize;
484
485 rlp_data->sbm.Prim[rlp_data->sbm.CurrPrimSlot].RefCount++;
486
487 /*
488 * the frame resides only in the first primitive
489 * -> the seconds description is set to invalid
490 */
491 rlp_data->sbm.Frame[rlp_data->sbm.VD].Len2 = 0;
492 rlp_data->sbm.Frame[rlp_data->sbm.VD].Offset2 = 0;
493 rlp_data->sbm.Frame[rlp_data->sbm.VD].PrimSlot2 = SBM_INVALID_IDX;
494
495 rlp_data->sbm.Frame[rlp_data->sbm.VD].S_State = SBM_SEND;
496
497 rlp_data->sbm.VD = (rlp_data->sbm.VD+1) % SBM_BUF_SIZE;
498 }
499
500 if (rlp_data->sbm.CurrPrimLen > 0)
501 rlp_data->sbm.Prim[rlp_data->sbm.CurrPrimSlot].RefCount++;
502
503 else if (rlp_data->sbm.CurrPrimLen EQ 0)
504 {
505 rlp_data->sbm.CurrPrimSlot = (rlp_data->sbm.CurrPrimSlot+1)
506 % SBM_PRIMBUF_SIZE;
507 }
508 }
509
510 /*
511 +------------------------------------------------------------------------------
512 | Function : sbm_ack_upto_n
513 +------------------------------------------------------------------------------
514 | Description :
515 |
516 | Parameters : n -
517 | allFramesAck -
518 |
519 | Return : -
520 +------------------------------------------------------------------------------
521 */
522
523
524 GLOBAL BOOL sbm_ack_upto_n(T_SBM_BUFFER_EXTIDX n)
525 {
526 TRACE_FUNCTION ("sbm_ack_upto_n()");
527
528 if (n EQ SBM_INVALID_IDX)
529 {
530 if (rlp_data->sbm.LastSentFrame NEQ SBM_INVALID_IDX)
531 {
532 n = rlp_data->sbm.LastSentFrame;
533 rlp_data->sbm.LastSentFrame = SBM_INVALID_IDX;
534 }
535 else
536 {
537 return (rlp_data->sbm.VA EQ rlp_data->sbm.VS);
538 }
539 }
540
541 sbmi_srej_list_delete (rlp_data->sbm.VA, n);
542
543 while (rlp_data->sbm.VA NEQ n)
544 {
545 rlp_data->sbm.Frame[rlp_data->sbm.VA].S_State = SBM_IDLE;
546 sbmi_dec_ref_count (rlp_data->sbm.Frame [rlp_data->sbm.VA].PrimSlot1);
547 sbmi_dec_ref_count (rlp_data->sbm.Frame [rlp_data->sbm.VA].PrimSlot2);
548 rlp_data->sbm.VA = (rlp_data->sbm.VA+1) % SBM_BUF_SIZE;
549 }
550
551 return (rlp_data->sbm.VA EQ rlp_data->sbm.VS);
552 }
553
554 /*
555 +------------------------------------------------------------------------------
556 | Function : sbm_srej_frame
557 +------------------------------------------------------------------------------
558 | Description :
559 |
560 | Parameters : n -
561 |
562 |
563 | Return : -
564 +------------------------------------------------------------------------------
565 */
566
567
568 GLOBAL void sbm_srej_frame
569 (
570 T_SBM_BUFFER_INDEX n
571 )
572 {
573 TRACE_FUNCTION ("sbm_srej_frame()");
574
575 rlp_data->sbm.Frame[n].S_State = SBM_SEND;
576 sbmi_srej_list_put (n);
577 }
578
579 /*
580 +------------------------------------------------------------------------------
581 | Function : sbm_get_frame
582 +------------------------------------------------------------------------------
583 | Description :
584 |
585 | Parameters : frameDesc -
586 | frameNo -
587 | framesCouldBeSent -
588 | ok -
589 |
590 |
591 | Return : -
592 +------------------------------------------------------------------------------
593 */
594
595
596 GLOBAL void sbm_get_frame
597 (
598 T_FRAME_DESC *frameDesc,
599 T_SBM_BUFFER_INDEX *frameNo,
600 BOOL *framesCouldBeSent,
601 BOOL *ok
602 )
603 {
604 T_SBM_BUFFER_EXTIDX p;
605
606 TRACE_FUNCTION ("sbm_get_frame()");
607
608 sbmi_data_to_transmit (&p, framesCouldBeSent);
609
610 if (p NEQ SBM_INVALID_IDX)
611 {
612 sbmi_get_frame_desc (p, frameDesc);
613 rlp_data->sbm.Frame[p].S_State = SBM_WAIT;
614 *frameNo = rlp_data->sbm.LastSentFrame = p;
615
616 *ok = TRUE;
617 }
618 else
619 *ok = FALSE;
620 }
621
622 /*
623 +------------------------------------------------------------------------------
624 | Function : sbm_rej_from_n
625 +------------------------------------------------------------------------------
626 | Description :
627 |
628 | Parameters : n -
629 | retransError -
630 |
631 | Return :
632 +------------------------------------------------------------------------------
633 */
634
635
636 GLOBAL void sbm_rej_from_n
637 (
638 T_SBM_BUFFER_INDEX n,
639 BOOL *retransError
640 )
641 {
642
643 T_SBM_BUFFER_INDEX ind;
644
645 TRACE_FUNCTION ("sbm_rej_from_n()");
646
647 while ( rlp_data->sbm.REJ_BufLo NEQ rlp_data->sbm.REJ_BufHi AND
648 !(
649 XOR
650 (
651 XOR (
652 rlp_data->sbm.REJ_BufLastN > rlp_data->sbm.REJ_Buf[rlp_data->sbm.REJ_BufLo],
653 rlp_data->sbm.REJ_Buf[rlp_data->sbm.REJ_BufLo] > n
654 ),
655 rlp_data->sbm.REJ_BufLastN > n
656 )
657 )
658 )
659 rlp_data->sbm.REJ_BufLo = (rlp_data->sbm.REJ_BufLo +1) % rlp_data->sbm.REJ_BufSize;
660
661
662 ind = rlp_data->sbm.REJ_BufHi;
663
664 while (ind NEQ rlp_data->sbm.REJ_BufLo)
665 {
666 if(ind EQ 0)
667 ind = rlp_data->sbm.REJ_BufSize;
668
669 ind--;
670
671 if (! XOR(
672 XOR(
673 n > rlp_data->sbm.REJ_Buf[ind],
674 rlp_data->sbm.REJ_Buf[ind] > rlp_data->sbm.VS
675 ),
676 n > rlp_data->sbm.VS
677 )
678 )
679 break;
680
681 rlp_data->sbm.REJ_Buf[ind] = rlp_data->sbm.VS;
682 }
683
684 rlp_data->sbm.REJ_Buf[rlp_data->sbm.REJ_BufHi] = rlp_data->sbm.VS;
685
686 rlp_data->sbm.REJ_BufHi = (rlp_data->sbm.REJ_BufHi + 1) % rlp_data->sbm.REJ_BufSize;
687
688 rlp_data->sbm.REJ_BufLastN = n;
689
690
691 if (rlp_data->sbm.REJ_BufLo EQ rlp_data->sbm.REJ_BufHi)
692 {
693 *retransError = TRUE;
694 return;
695 }
696
697 *retransError = FALSE;
698
699 sbmi_srej_list_delete (n, rlp_data->sbm.VS);
700
701 while (rlp_data->sbm.VS NEQ n)
702 {
703 if (rlp_data->sbm.VS > 0)
704 rlp_data->sbm.VS--;
705 else
706 rlp_data->sbm.VS = SBM_BUF_SIZE-1;
707
708 rlp_data->sbm.Frame[rlp_data->sbm.VS].S_State = SBM_SEND;
709 }
710 }
711
712 /*
713 +------------------------------------------------------------------------------
714 | Function : sbm_frame_in_range
715 +------------------------------------------------------------------------------
716 | Description :
717 |
718 | Parameters : n -
719 |
720 |
721 | Return : TRUE -
722 | FALSE -
723 +------------------------------------------------------------------------------
724 */
725
726
727 GLOBAL BOOL sbm_frame_in_range
728 (
729 T_SBM_BUFFER_INDEX n
730 )
731 {
732 TRACE_FUNCTION ("sbm_frame_in_range()");
733
734 return !( XOR
735 (
736 XOR
737 (
738 rlp_data->sbm.VA > n,
739 n > rlp_data->sbm.VS
740 ),
741 rlp_data->sbm.VA > rlp_data->sbm.VS
742 )
743 );
744 }
745
746 /*
747 +------------------------------------------------------------------------------
748 | Function : sbm_space_in_buf
749 +------------------------------------------------------------------------------
750 | Description :
751 |
752 | Parameters : -
753 |
754 |
755 | Return : ret
756 +------------------------------------------------------------------------------
757 */
758
759
760 GLOBAL USHORT sbm_space_in_buf
761 (
762 void
763 )
764 {
765 SHORT ret;
766
767 TRACE_FUNCTION ("sbm_space_in_buf()");
768
769 ret = rlp_data->sbm.VA - rlp_data->sbm.VD - 1;
770
771 if (ret < 0)
772 return (USHORT) (ret + SBM_BUF_SIZE);
773 else
774 return (USHORT) ret;
775 }
776
777 /*
778 +------------------------------------------------------------------------------
779 | Function : sbm_deinit
780 +------------------------------------------------------------------------------
781 | Description :
782 |
783 | Parameters : -
784 |
785 |
786 | Return : -
787 +------------------------------------------------------------------------------
788 */
789
790
791 GLOBAL void sbm_deinit
792 (
793 void
794 )
795 {
796 SHORT n;
797
798 TRACE_FUNCTION ("sbm_deinit()");
799
800 n = 0;
801
802 while (n < SBM_PRIMBUF_SIZE)
803 {
804 if (rlp_data->sbm.Prim[n].Prim NEQ NULL)
805 {
806 PFREE(rlp_data->sbm.Prim[n].Prim);
807 rlp_data->sbm.Prim[n].Prim = NULL;
808 }
809 n++;
810 }
811 }
812
813 /*
814 +------------------------------------------------------------------------------
815 | Function : sbm_set_retrans
816 +------------------------------------------------------------------------------
817 | Description :
818 |
819 | Parameters : n2 -
820 |
821 |
822 | Return : -
823 +------------------------------------------------------------------------------
824 */
825
826
827 GLOBAL void sbm_set_retrans
828 (
829 UBYTE n2
830 )
831 {
832 TRACE_FUNCTION ("sbm_set_retrans()");
833
834 rlp_data->sbm.REJ_BufSize = n2 + 1;
835 rlp_data->sbm.REJ_BufLo = 0;
836 rlp_data->sbm.REJ_BufHi = 0;
837 }
838
839 /*
840 +------------------------------------------------------------------------------
841 | Function : sbm_check_rej_count
842 +------------------------------------------------------------------------------
843 | Description :
844 |
845 | Parameters : retransError
846 |
847 |
848 | Return : -
849 +------------------------------------------------------------------------------
850 */
851
852
853 GLOBAL void sbm_check_rej_count
854 (
855 BOOL *retransError
856 )
857 {
858
859 T_SBM_BUFFER_INDEX n;
860
861 TRACE_FUNCTION ("sbm_check_rej_count()");
862
863 n = rlp_data->sbm.REJ_BufHi +1;
864
865 if (rlp_data->sbm.REJ_BufLo NEQ n)
866 {
867 if (n NEQ rlp_data->sbm.REJ_BufSize OR
868 rlp_data->sbm.REJ_BufLo NEQ 0)
869 *retransError = FALSE;
870 else
871 *retransError = TRUE;
872 }
873 else
874 *retransError = TRUE;
875 }
876
877 /*
878 +------------------------------------------------------------------------------
879 | Function : sbm_recall_prim
880 +------------------------------------------------------------------------------
881 | Description :
882 |
883 | Parameters : prim -
884 |
885 |
886 | Return : TRUE -
887 | FALSE -
888 +------------------------------------------------------------------------------
889 */
890
891
892 GLOBAL BOOL sbm_recall_prim
893 (
894 T_SBM_PRIM **prim
895 )
896 {
897 T_SBM_PRIM_EXTIDX primSlot;
898 T_SBM_PRIM_EXTIDX endPrimSlot;
899 T_SBM_PRIM_EXTIDX firstPrimSlot;
900 T_SBM_BUFFER_INDEX vend;
901
902 TRACE_FUNCTION ("sbm_recall_prim()");
903
904 if (rlp_data->sbm.VA EQ rlp_data->sbm.VD)
905 {
906 return FALSE;
907 }
908
909 primSlot = rlp_data->sbm.Frame[rlp_data->sbm.VA].PrimSlot1;
910 firstPrimSlot = primSlot;
911
912 if (rlp_data->sbm.VD EQ 0)
913 {
914 vend = SBM_BUF_SIZE - 1;
915 }
916 else
917 {
918 vend = rlp_data->sbm.VD - 1;
919 }
920
921 if (rlp_data->sbm.Frame[vend].Len2 EQ 0)
922 {
923 endPrimSlot = rlp_data->sbm.Frame[vend].PrimSlot1 + 1;
924 }
925 else
926 {
927 endPrimSlot = rlp_data->sbm.Frame[vend].PrimSlot2 + 1;
928 }
929
930 if (endPrimSlot >= SBM_PRIMBUF_SIZE)
931 {
932 endPrimSlot = 0;
933 }
934
935 while ((primSlot NEQ endPrimSlot) AND
936 (rlp_data->sbm.Prim[primSlot].Prim EQ NULL))
937 {
938 primSlot += 1;
939 if (primSlot >= SBM_PRIMBUF_SIZE)
940 {
941 primSlot = 0;
942 }
943 }
944
945 if (primSlot EQ endPrimSlot)
946 {
947 return FALSE;
948 }
949
950 if (primSlot EQ firstPrimSlot)
951 {
952 /* in the first primitive there may be some frames sent already */
953 rlp_data->sbm.Prim[primSlot].Prim->sdu.l_buf =
954 rlp_data->sbm.Prim[primSlot].Prim->sdu.l_buf
955 - rlp_data->sbm.Frame[rlp_data->sbm.VA].Offset1 * 8
956 + rlp_data->sbm.Prim[primSlot].Prim->sdu.o_buf;
957
958 rlp_data->sbm.Prim[primSlot].Prim->sdu.o_buf =
959 rlp_data->sbm.Frame[rlp_data->sbm.VA].Offset1 * 8;
960 }
961 *prim = rlp_data->sbm.Prim[primSlot].Prim;
962 rlp_data->sbm.Prim[primSlot].Prim = NULL;
963 rlp_data->sbm.Prim[primSlot].RefCount = 0;
964 return TRUE;
965
966 }
967
968 /*
969 +------------------------------------------------------------------------------
970 | Function : sbm_reset_after_remap
971 +------------------------------------------------------------------------------
972 | Description :
973 |
974 | Parameters : newFrameSize -
975 | new_vs -
976 |
977 | Return : -
978 +------------------------------------------------------------------------------
979 */
980
981
982 GLOBAL void sbm_reset_after_remap
983 (
984 USHORT newFrameSize,
985 T_SBM_BUFFER_INDEX new_vs
986 )
987 {
988
989
990 TRACE_FUNCTION ("sbm_reset_after_remap()");
991 sbmi_srej_list_delete (0, SBM_BUF_SIZE);
992 sbm_init
993 (
994 rlp_data->sbm.K,
995 newFrameSize,
996 (UBYTE)(rlp_data->sbm.REJ_BufSize - 1)
997 );
998 rlp_data->sbm.VA = new_vs;
999 rlp_data->sbm.VS = new_vs;
1000 rlp_data->sbm.VD = new_vs;
1001 }