FreeCalypso > hg > fc-tourmaline

comparison src/g23m-gprs/sndcp/sndcp_sdf.c @ 1:fa8dc04885d8

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
src/g23m-*: import from Magnetite
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 16 Oct 2020 06:25:50 +0000
parents
children
comparison
equal deleted inserted replaced
0:4e78acac3d88 1:fa8dc04885d8
1 /*
2 +-----------------------------------------------------------------------------
3 | Project : GPRS (8441)
4 | Modul : sndcp_sdf.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 is part of the entity SNDCP and implements all
18 | procedures and functions as described in the
19 | SDL-documentation (SD-statemachine)
20 +-----------------------------------------------------------------------------
21 */
22
23
24 #define ENTITY_SNDCP
25
26 /*==== INCLUDES =============================================================*/
27
28 #include "typedefs.h" /* to get Condat data types */
29 #include "vsi.h" /* to get a lot of macros */
30 #include "macdef.h"
31 #include "prim.h" /* to get the definitions of used SAP and directions */
32
33 #include "dti.h"
34
35 #include "sndcp.h" /* to get the global entity definitions */
36 #include "sndcp_f.h" /* to get the functions to access the global arrays*/
37
38 #include "sndcp_cias.h" /* to get the signals to service cia */
39 #include "sndcp_sdf.h" /* to get functions in sd */
40 #include "sndcp_pds.h" /* to get the sigbnals to service pd.*/
41
42
43
44
45 /*==== CONST ================================================================*/
46
47 /*==== LOCAL VARS ===========================================================*/
48
49 /*==== PRIVATE FUNCTIONS ====================================================*/
50
51 LOCAL UBYTE sd_get_dcomp (T_LL_UNITDATA_IND* ll_unitdata_ind);
52
53 /*
54 +------------------------------------------------------------------------------
55 | Function : sd_get_dcomp
56 +------------------------------------------------------------------------------
57 | Description : E X T R A convenience function, not in SDL.
58 | Returns the DCOMP value in the sdu of the given primitive.
59 |
60 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
61 |
62 +------------------------------------------------------------------------------
63 */
64 LOCAL UBYTE sd_get_dcomp (T_LL_UNITDATA_IND* ll_unitdata_ind)
65 {
66 return (ll_unitdata_ind->sdu.buf[ll_unitdata_ind->sdu.o_buf / 8 + 1] & 0xf0) >> 4 ;
67
68 } /* sd_get_dcomp() */
69
70 /*
71 +------------------------------------------------------------------------------
72 | Function : sd_get_npdu_num
73 +------------------------------------------------------------------------------
74 | Description : E X T R A convenience function, not in SDL.
75 | Gets the N-PDU number from the segment header.
76 |
77 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*, npdu_num*
78 |
79 +------------------------------------------------------------------------------
80 */
81 LOCAL void sd_get_npdu_num (T_LL_UNITDATA_IND* ll_unitdata_ind, USHORT* npdu_num)
82 {
83 USHORT msn_off = 1;
84 USHORT lsb_off = 2;
85 UBYTE msn = 0;
86 UBYTE lsb = 0;
87
88 if (sd_f_bit(ll_unitdata_ind)) {
89 msn_off = 2;
90 lsb_off = 3;
91 }
92
93 msn =
94 ll_unitdata_ind->sdu.buf[(ll_unitdata_ind->sdu.o_buf / 8) + msn_off];
95 lsb =
96 ll_unitdata_ind->sdu.buf[(ll_unitdata_ind->sdu.o_buf / 8) + lsb_off];
97
98 *npdu_num = ((msn & 0xf) << 8) + lsb;
99 } /* sd_get_npdu_num() */
100
101 /*
102 +------------------------------------------------------------------------------
103 | Function : sd_get_nsapi
104 +------------------------------------------------------------------------------
105 | Description : E X T R A convenience function, not in SDL.
106 | Gets the NSAPI from the segment header.
107 |
108 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*, nsapi*
109 |
110 +------------------------------------------------------------------------------
111 */
112 GLOBAL void sd_get_nsapi (T_LL_UNITDATA_IND* ll_unitdata_ind, UBYTE* nsapi)
113 {
114 /*
115 * The nsapi number in the sn-pdu header is the least sig half first octet.
116 */
117 UBYTE first = ll_unitdata_ind->sdu.buf[(ll_unitdata_ind->sdu.o_buf / 8)];
118
119 *nsapi = first & 0xf;
120 } /* sd_get_nsapi() */
121
122
123 /*==== PUBLIC FUNCTIONS =====================================================*/
124
125
126 /*
127 +------------------------------------------------------------------------------
128 | Function : sd_is_seg_valid
129 +------------------------------------------------------------------------------
130 | Description : According to GSM 4.65, 6.9 unacknowledged segments for NSAPIs
131 | in acknowledged mode and vice versa and also segments for not
132 | activated NSAPIs shall be discarded without further error
133 | notification.
134 |
135 | Parameters : nsapi, sapi, BOOL ack, BOOL* valid
136 |
137 +------------------------------------------------------------------------------
138 */
139 GLOBAL void sd_is_seg_valid(T_LL_UNITDATA_IND* ll_unitdata_ind,
140 BOOL* valid)
141 {
142 UBYTE nsapi = 0;
143 UBYTE sapi = 0;
144 /*
145 * Is the affected NSAPI using acknowledged LLC mode?
146 */
147 BOOL ack = TRUE;
148 /*
149 * Is the NSAPI used at all?
150 */
151 BOOL used = FALSE;
152
153 TRACE_FUNCTION( "sd_is_seg_valid" );
154
155 *valid = TRUE;
156 /*
157 * Get the affected nsapi from primitive.
158 */
159 sd_get_nsapi(ll_unitdata_ind, &nsapi);
160 /*
161 * If the NSAPI is not used, leave.
162 */
163 sndcp_is_nsapi_used(nsapi, &used);
164 if (!used) {
165 *valid = FALSE;
166 return;
167 }
168 /*
169 * To which sapi is the given nsapi mapped?
170 */
171 sndcp_get_nsapi_sapi(nsapi, &sapi);
172 /*
173 * If the sapi in the primitive is the wrong one, leave.
174 */
175 if (sapi != ll_unitdata_ind->sapi) {
176 *valid = FALSE;
177 return;
178 }
179 /*
180 * If the nsapi normally uses acknowledged LLC mode, leave.
181 * Note: if 'ack' is true the NSAPI is in acknowledged
182 * mode normally and the 'sd' service is the wrong one
183 * anyway, but it was chosen because of the unack primitive.
184 */
185 sndcp_get_nsapi_ack(nsapi, &ack);
186 if (ack) {
187 *valid = FALSE;
188 return;
189 }
190
191 } /* sd_is_seg_valid() */
192
193
194
195 /*
196 +------------------------------------------------------------------------------
197 | Function : sd_delete_cur_sn_unitdata_ind
198 +------------------------------------------------------------------------------
199 | Description : The descriptor list in service variable cur_sn_unitdata_ind is
200 | deleted recursively, then the primitive is freed with PFREE
201 | macro.
202 |
203 | Parameters :
204 |
205 +------------------------------------------------------------------------------
206 */
207 GLOBAL void sd_delete_cur_sn_unitdata_ind (U8 nsapi)
208 {
209 TRACE_FUNCTION( "sd_delete_cur_sn_unitdata_ind" );
210
211 if (sndcp_data->sd->cur_sn_unitdata_ind[nsapi] != NULL) {
212 #ifdef _SNDCP_DTI_2_
213 MFREE_PRIM(sndcp_data->sd->cur_sn_unitdata_ind[nsapi]);
214 #else /*_SNDCP_DTI_2_*/
215 PFREE_DESC(sndcp_data->sd->cur_sn_unitdata_ind[nsapi]);
216 #endif /*_SNDCP_DTI_2_*/
217 sndcp_data->sd->cur_sn_unitdata_ind[nsapi] = NULL;
218 }
219 } /* sd_delete_cur_sn_unitdata_ind(void) */
220
221
222 /*
223 +------------------------------------------------------------------------------
224 | Function : sd_f_bit
225 +------------------------------------------------------------------------------
226 | Description : E X T R A convenience function, not in SDL.
227 | Returns TRUE if the f bit in the given sdu is set to 1, else
228 | FALSE.
229 |
230 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
231 |
232 +------------------------------------------------------------------------------
233 */
234 GLOBAL BOOL sd_f_bit (T_LL_UNITDATA_IND* ll_unitdata_ind)
235 {
236 UBYTE f_b = ll_unitdata_ind->sdu.buf[ll_unitdata_ind->sdu.o_buf / 8] & 0x40;
237
238 TRACE_FUNCTION( "sd_f_bit" );
239
240 return (f_b > 0);
241
242 } /* sd_f_bit() */
243
244
245
246
247 /*
248 +------------------------------------------------------------------------------
249 | Function : sd_get_pcomp
250 +------------------------------------------------------------------------------
251 | Description : E X T R A convenience function, not in SDL.
252 | Returns the PCOMP value in the sdu of the given primitive.
253 |
254 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
255 |
256 +------------------------------------------------------------------------------
257 */
258 GLOBAL UBYTE sd_get_pcomp (T_LL_UNITDATA_IND* ll_unitdata_ind)
259 {
260 return ll_unitdata_ind->sdu.buf[ll_unitdata_ind->sdu.o_buf / 8 + 1] & 0xf;
261
262 } /* sd_get_pcomp() */
263
264
265
266 /*
267 +------------------------------------------------------------------------------
268 | Function : sd_get_unitdata_if_nec
269 +------------------------------------------------------------------------------
270 | Description : This function sends a SIG_SD_PD_GETUNITDATA_REQ to the affected
271 | SAPI
272 | if necessary (service variable llc_may_send was set to FALSE)
273 | and sets llc_may_send to TRUE or does nothing (service
274 | variable llc_may_send already was set to TRUE).
275 |
276 | Parameters : FPAR IN sapi UBYTE the number of the affected SAPI
277 |
278 +------------------------------------------------------------------------------
279 */
280 GLOBAL void sd_get_unitdata_if_nec (UBYTE sapi)
281 {
282 UBYTE sapi_index = 0;
283
284 TRACE_FUNCTION( "sd_get_unitdata_if_nec" );
285
286 #ifdef SNDCP_TRACE_ALL
287 if (sndcp_data->sd->llc_may_send) {
288 TRACE_EVENT("llc_may_send TRUE");
289 } else {
290 TRACE_EVENT("llc_may_send FALSE");
291 }
292 #endif
293
294 /*
295 * set service instance according to sapi in signal
296 */
297 sndcp_get_sapi_index(sapi, &sapi_index);
298 sndcp_data->sd = & sndcp_data->sd_base[sapi_index];
299 if (sndcp_data->sd->llc_may_send == FALSE) {
300 sig_sd_pd_getunitdata_req(sapi);
301 /*
302 * Mark this LLC SAPI as pending.
303 */
304 sndcp_data->sd->llc_may_send = TRUE;
305 }
306
307 } /* sd_get_unitdata_if_nec() */
308
309
310
311 /*
312 +------------------------------------------------------------------------------
313 | Function : sd_init
314 +------------------------------------------------------------------------------
315 | Description : Initialize the entity instance.
316 |
317 | Parameters :
318 |
319 +------------------------------------------------------------------------------
320 */
321 GLOBAL void sd_init (void)
322 {
323 TRACE_FUNCTION( "sd_init" );
324
325 sndcp_data->sd = & sndcp_data->sd_base[0];
326 INIT_STATE(SD_0, SD_DEFAULT);
327 #ifdef SNDCP_2to1
328 sndcp_data->sd->sapi = PS_SAPI_3;
329 #else
330 sndcp_data->sd->sapi = LL_SAPI_3;
331 #endif /*SNDCP_2to1*/
332 sndcp_data->sd = & sndcp_data->sd_base[1];
333 INIT_STATE(SD_1, SD_DEFAULT);
334 #ifdef SNDCP_2to1
335 sndcp_data->sd->sapi = PS_SAPI_5;
336 #else
337 sndcp_data->sd->sapi = LL_SAPI_5;
338 #endif /*SNDCP_2to1*/
339
340 sndcp_data->sd = & sndcp_data->sd_base[2];
341 INIT_STATE(SD_2, SD_DEFAULT);
342 #ifdef SNDCP_2to1
343 sndcp_data->sd->sapi = PS_SAPI_9;
344 #else
345 sndcp_data->sd->sapi = LL_SAPI_9;
346 #endif /*SNDCP_2to1*/
347
348 sndcp_data->sd = & sndcp_data->sd_base[3];
349 INIT_STATE(SD_3, SD_DEFAULT);
350 #ifdef SNDCP_2to1
351 sndcp_data->sd->sapi = PS_SAPI_11;
352 #else
353 sndcp_data->sd->sapi = LL_SAPI_11;
354 #endif /*SNDCP_2to1*/
355
356 {
357 UBYTE sapi_index = 0;
358
359 for (sapi_index = 0; sapi_index < SNDCP_NUMBER_OF_SAPIS; sapi_index++) {
360 UBYTE nsapi = 0;
361
362 sndcp_data->sd = & sndcp_data->sd_base[sapi_index];
363 for (nsapi = 0; nsapi < SNDCP_NUMBER_OF_NSAPIS; nsapi++) {
364 sd_set_nsapi_rec(nsapi, FALSE);
365 sndcp_set_nsapi_rec_state(nsapi, SD_UNACK_DISCARD);
366 sndcp_data->sd->cur_sn_unitdata_ind[nsapi] = NULL;
367 }
368 sndcp_data->sd->llc_may_send = FALSE;
369 }
370 }
371
372
373 } /* sd_init() */
374
375 /*
376 +------------------------------------------------------------------------------
377 | Function : sd_is_nsapi_rec
378 +------------------------------------------------------------------------------
379 | Description : Returns TRUE if the given nsapi is receptive, else
380 | FALSE.
381 |
382 | Parameters : nsapi, BOOL* b
383 |
384 +------------------------------------------------------------------------------
385 */
386 GLOBAL void sd_is_nsapi_rec (UBYTE nsapi, BOOL* b)
387 {
388 *b = sndcp_data->sd->nsapi_rec_ra[nsapi];
389 } /* sd_is_nsapi_rec() */
390
391
392 /*
393 +------------------------------------------------------------------------------
394 | Function : sd_m_bit
395 +------------------------------------------------------------------------------
396 | Description : E X T R A convenience function, not in SDL.
397 | Returns TRUE if the m bit in the given sdu is set to 1, else
398 | FALSE.
399 |
400 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
401 |
402 +------------------------------------------------------------------------------
403 */
404 GLOBAL BOOL sd_m_bit (T_LL_UNITDATA_IND* ll_unitdata_ind)
405 {
406 UBYTE m_b;
407
408 TRACE_FUNCTION( "sd_m_bit" );
409
410 m_b = ll_unitdata_ind->sdu.buf[ll_unitdata_ind->sdu.o_buf / 8] & 0x10;
411 return (m_b > 0);
412
413 } /* sd_m_bit() */
414
415
416
417 /*
418 +------------------------------------------------------------------------------
419 | Function : sd_set_nsapi_rec
420 +------------------------------------------------------------------------------
421 | Description : Sets the given nsapi_rec_ra element to the given BOOL.
422 |
423 | Parameters : nsapi, BOOL b
424 |
425 +------------------------------------------------------------------------------
426 */
427 GLOBAL void sd_set_nsapi_rec (UBYTE nsapi, BOOL b)
428 {
429 sndcp_data->sd->nsapi_rec_ra[nsapi] = b;
430 } /* sd_set_nsapi_rec */
431
432
433 /*
434 +------------------------------------------------------------------------------
435 | Function : sd_un_d_f0_m0
436 +------------------------------------------------------------------------------
437 | Description : E X T R A convenience function, not in SDL.
438 | Represents the label UN_D_F0_M0 in SDL.
439 |
440 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
441 |
442 +------------------------------------------------------------------------------
443 */
444 GLOBAL void sd_un_d_f0_m0 (T_LL_UNITDATA_IND* ll_unitdata_ind)
445 {
446 UBYTE nsapi = 0;
447 sd_get_unitdata_if_nec(ll_unitdata_ind->sapi);
448 PFREE(ll_unitdata_ind);
449
450 sd_get_nsapi(ll_unitdata_ind, &nsapi);
451 sndcp_set_nsapi_rec_state(nsapi, SD_UNACK_RECEIVE_FIRST_SEGMENT);
452 } /* sd_un_d_f0_m0() */
453
454 /*
455 +------------------------------------------------------------------------------
456 | Function : sd_un_d_f0_m1
457 +------------------------------------------------------------------------------
458 | Description : E X T R A convenience function, not in SDL.
459 | Represents the label UN_D_F0_M1 in SDL.
460 |
461 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
462 |
463 +------------------------------------------------------------------------------
464 */
465 GLOBAL void sd_un_d_f0_m1 (T_LL_UNITDATA_IND* ll_unitdata_ind)
466 {
467 if (ll_unitdata_ind != NULL) {
468 sd_get_unitdata_if_nec(ll_unitdata_ind->sapi);
469 PFREE(ll_unitdata_ind);
470 }
471 } /* sd_un_d_f0_m1() */
472
473 /*
474 +------------------------------------------------------------------------------
475 | Function : sd_un_d_f1_m0
476 +------------------------------------------------------------------------------
477 | Description : E X T R A convenience function, not in SDL.
478 | Represents the label UN_D_F1_M0 in SDL.
479 |
480 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
481 |
482 +------------------------------------------------------------------------------
483 */
484 GLOBAL void sd_un_d_f1_m0 (T_LL_UNITDATA_IND* ll_unitdata_ind)
485 {
486 UBYTE nsapi = 0;
487
488 sd_get_nsapi(ll_unitdata_ind, &nsapi);
489
490 if (ll_unitdata_ind != NULL) {
491 sd_get_unitdata_if_nec(ll_unitdata_ind->sapi);
492 PFREE(ll_unitdata_ind);
493 }
494
495 sndcp_set_nsapi_rec_state(nsapi, SD_UNACK_RECEIVE_FIRST_SEGMENT);
496
497 } /* sd_un_d_f1_m0() */
498
499 /*
500 +------------------------------------------------------------------------------
501 | Function : sd_un_d_f1_m1
502 +------------------------------------------------------------------------------
503 | Description : E X T R A convenience function, not in SDL.
504 | Represents the label UN_D_F1_M1 in SDL.
505 |
506 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
507 |
508 +------------------------------------------------------------------------------
509 */
510 GLOBAL void sd_un_d_f1_m1 (T_LL_UNITDATA_IND* ll_unitdata_ind)
511 {
512 if (ll_unitdata_ind != NULL) {
513 sd_get_unitdata_if_nec(ll_unitdata_ind->sapi);
514 PFREE(ll_unitdata_ind);
515 }
516 } /* sd_un_d_f1_m1() */
517
518
519
520 /*
521 +------------------------------------------------------------------------------
522 | Function : sd_un_f_f0_m0
523 +------------------------------------------------------------------------------
524 | Description : E X T R A convenience function, not in SDL.
525 | Represents the label UN_F_F0_M0 in SDL.
526 |
527 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
528 |
529 +------------------------------------------------------------------------------
530 */
531 GLOBAL void sd_un_f_f0_m0 (T_LL_UNITDATA_IND* ll_unitdata_ind)
532 {
533 if (ll_unitdata_ind != NULL) {
534 sd_get_unitdata_if_nec(ll_unitdata_ind->sapi);
535 PFREE(ll_unitdata_ind);
536 }
537 } /* sd_un_f_f0_m0() */
538
539 /*
540 +------------------------------------------------------------------------------
541 | Function : sd_un_f_f0_m1
542 +------------------------------------------------------------------------------
543 | Description : E X T R A convenience function, not in SDL.
544 | Represents the label UN_F_F0_M1 in SDL.
545 |
546 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
547 |
548 +------------------------------------------------------------------------------
549 */
550 GLOBAL void sd_un_f_f0_m1 (T_LL_UNITDATA_IND* ll_unitdata_ind)
551 {
552 UBYTE nsapi = 0;
553
554 sd_get_nsapi(ll_unitdata_ind, &nsapi);
555
556 if (ll_unitdata_ind != NULL) {
557 sd_get_unitdata_if_nec(ll_unitdata_ind->sapi);
558 PFREE(ll_unitdata_ind);
559 }
560
561 sndcp_set_nsapi_rec_state(nsapi, SD_UNACK_DISCARD);
562
563 } /* sd_un_f_f0_m1() */
564
565
566
567 /*
568 +------------------------------------------------------------------------------
569 | Function : sd_un_f_f1_m0
570 +------------------------------------------------------------------------------
571 | Description : E X T R A convenience function, not in SDL.
572 | Represents the label UN_F_F1_M0 in SDL.
573 |
574 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
575 |
576 +------------------------------------------------------------------------------
577 */
578 GLOBAL void sd_un_f_f1_m0 (T_LL_UNITDATA_IND* ll_unitdata_ind)
579 {
580 sndcp_set_unack_transfer_params(ll_unitdata_ind);
581 sig_sd_cia_cia_decomp_req(ll_unitdata_ind);
582 } /* sd_un_f_f1_m0() */
583
584 /*
585 +------------------------------------------------------------------------------
586 | Function : sd_un_f_f1_m1
587 +------------------------------------------------------------------------------
588 | Description : E X T R A convenience function, not in SDL.
589 | Represents the label UN_F_F1_M1 in SDL.
590 |
591 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
592 |
593 +------------------------------------------------------------------------------
594 */
595 GLOBAL void sd_un_f_f1_m1 (T_LL_UNITDATA_IND* ll_unitdata_ind)
596 {
597 UBYTE nsapi = 0;
598 sndcp_set_unack_transfer_params(ll_unitdata_ind);
599 sig_sd_cia_cia_decomp_req(ll_unitdata_ind);
600
601 sd_get_nsapi(ll_unitdata_ind, &nsapi);
602 sndcp_set_nsapi_rec_state(nsapi, SD_UNACK_RECEIVE_SUBSEQUENT_SEGMENT);
603
604 } /* sd_un_f_f1_m1() */
605
606
607 /*
608 +------------------------------------------------------------------------------
609 | Function : sd_un_s_f0_m0
610 +------------------------------------------------------------------------------
611 | Description : E X T R A convenience function, not in SDL.
612 | Represents the label UN_S_F0_M0 in SDL.
613 |
614 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
615 |
616 +------------------------------------------------------------------------------
617 */
618 GLOBAL void sd_un_s_f0_m0 (T_LL_UNITDATA_IND* ll_unitdata_ind)
619 {
620
621 USHORT npdu_num = 0;
622 UBYTE nsapi = 0;
623
624 /*
625 * Does the received segment have the current npdu number?
626 */
627 sd_get_npdu_num(ll_unitdata_ind, &npdu_num);
628 sd_get_nsapi(ll_unitdata_ind, &nsapi);
629 sndcp_data->cur_seg_pos[nsapi] = SEG_POS_LAST;
630 sndcp_set_nsapi_rec_state(nsapi, SD_UNACK_RECEIVE_FIRST_SEGMENT);
631 if (npdu_num ==
632 sndcp_data->cur_pdu_ref[nsapi].ref_npdu_num) {
633 sig_sd_cia_cia_decomp_req(ll_unitdata_ind);
634 } else {
635 sd_delete_cur_sn_unitdata_ind(nsapi);
636 if (ll_unitdata_ind != NULL) {
637 sd_get_unitdata_if_nec(ll_unitdata_ind->sapi);
638 PFREE(ll_unitdata_ind);
639 }
640 }
641
642 } /* sd_un_s_f0_m0() */
643
644
645 /*
646 +------------------------------------------------------------------------------
647 | Function : sd_un_s_f0_m1
648 +------------------------------------------------------------------------------
649 | Description : E X T R A convenience function, not in SDL.
650 | Represents the label UN_S_F0_M1 in SDL.
651 |
652 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
653 |
654 +------------------------------------------------------------------------------
655 */
656 GLOBAL void sd_un_s_f0_m1 (T_LL_UNITDATA_IND* ll_unitdata_ind)
657 {
658 USHORT npdu_num = 0;
659 UBYTE nsapi = 0;
660
661 /*
662 * Does the received segment have the current npdu number?
663 */
664 sd_get_npdu_num(ll_unitdata_ind, &npdu_num);
665 sd_get_nsapi(ll_unitdata_ind, &nsapi);
666 if (npdu_num ==
667 sndcp_data->cur_pdu_ref[nsapi].ref_npdu_num) {
668
669 sndcp_data->cur_seg_pos[nsapi] = SEG_POS_NONE;
670 sndcp_set_nsapi_rec_state(nsapi, SD_UNACK_RECEIVE_SUBSEQUENT_SEGMENT);
671 sig_sd_cia_cia_decomp_req(ll_unitdata_ind);
672 } else {
673 sd_delete_cur_sn_unitdata_ind(nsapi);
674 if (ll_unitdata_ind != NULL) {
675 sd_get_unitdata_if_nec(ll_unitdata_ind->sapi);
676 PFREE(ll_unitdata_ind);
677 }
678 sndcp_set_nsapi_rec_state(nsapi, SD_UNACK_RECEIVE_FIRST_SEGMENT);
679 }
680
681 } /* sd_un_s_f0_m1() */
682
683 /*
684 +------------------------------------------------------------------------------
685 | Function : sd_un_s_f1_m1
686 +------------------------------------------------------------------------------
687 | Description : E X T R A convenience function, not in SDL.
688 | Represents the label UN_S_F1_M1 in SDL.
689 |
690 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
691 |
692 +------------------------------------------------------------------------------
693 */
694 GLOBAL void sd_un_s_f1_m1 (T_LL_UNITDATA_IND* ll_unitdata_ind)
695 {
696 USHORT npdu_num = 0;
697 UBYTE nsapi = 0;
698
699 /*
700 * Get NSAPI
701 */
702 sd_get_nsapi(ll_unitdata_ind, &nsapi);
703 /*
704 * Does the received segment have the current npdu number?
705 */
706 sd_get_npdu_num(ll_unitdata_ind, &npdu_num);
707 if (npdu_num ==
708 sndcp_data->cur_pdu_ref[nsapi].ref_npdu_num) {
709
710 /*
711 * Are PCOMP and DCOMP value the same as in the first segment?
712 */
713 UBYTE prim_dcomp = 0;
714 UBYTE prim_pcomp = 0;
715
716 prim_dcomp = sd_get_dcomp(ll_unitdata_ind);
717 prim_pcomp = sd_get_pcomp(ll_unitdata_ind);
718 if (prim_dcomp == sndcp_data->cur_dcomp[nsapi] &&
719 prim_pcomp == sndcp_data->cur_pcomp[nsapi]) {
720
721 sndcp_data->big_head[nsapi] = TRUE;
722 sd_un_s_f0_m1(ll_unitdata_ind);
723 } else {
724 sd_delete_cur_sn_unitdata_ind(nsapi);
725 if (ll_unitdata_ind != NULL) {
726 sd_get_unitdata_if_nec(ll_unitdata_ind->sapi);
727 PFREE(ll_unitdata_ind);
728 }
729 sndcp_set_nsapi_rec_state(nsapi, SD_UNACK_DISCARD);
730 }
731
732 } else {
733 sd_delete_cur_sn_unitdata_ind(nsapi);
734 sd_un_f_f1_m1(ll_unitdata_ind);
735 }
736
737 } /* sd_un_s_f1_m1() */
738
739 /*
740 +------------------------------------------------------------------------------
741 | Function : sd_un_s_f1_m0
742 +------------------------------------------------------------------------------
743 | Description : E X T R A convenience function, not in SDL.
744 | Represents the label UN_S_F1_M1 in SDL.
745 |
746 | Parameters : ll_unitdata_ind T_LL_UNITDATA_IND*
747 |
748 +------------------------------------------------------------------------------
749 */
750 GLOBAL void sd_un_s_f1_m0 (T_LL_UNITDATA_IND* ll_unitdata_ind)
751 {
752 USHORT npdu_num = 0;
753 UBYTE nsapi = 0;
754
755 /*
756 * Get NSAPI
757 */
758 sd_get_nsapi(ll_unitdata_ind, &nsapi);
759 /*
760 * Does the received segment have the current npdu number?
761 */
762 sd_get_npdu_num(ll_unitdata_ind, &npdu_num);
763 if (npdu_num ==
764 sndcp_data->cur_pdu_ref[nsapi].ref_npdu_num) {
765
766 /*
767 * Are PCOMP and DCOMP value the same as in the first segment?
768 */
769 UBYTE prim_dcomp = 0;
770 UBYTE prim_pcomp = 0;
771
772 prim_dcomp = sd_get_dcomp(ll_unitdata_ind);
773 prim_pcomp = sd_get_pcomp(ll_unitdata_ind);
774 if (prim_dcomp == sndcp_data->cur_dcomp[nsapi] &&
775 prim_pcomp == sndcp_data->cur_pcomp[nsapi]) {
776 sndcp_data->big_head[nsapi] = TRUE;
777 sd_un_s_f0_m0(ll_unitdata_ind);
778 } else {
779 sd_delete_cur_sn_unitdata_ind(nsapi);
780 if (ll_unitdata_ind != NULL) {
781 sd_get_unitdata_if_nec(ll_unitdata_ind->sapi);
782 PFREE(ll_unitdata_ind);
783 }
784 sndcp_set_nsapi_rec_state(nsapi, SD_UNACK_RECEIVE_FIRST_SEGMENT);
785 }
786
787 } else {
788
789 sndcp_data->cur_seg_pos[nsapi] = SEG_POS_LAST + SEG_POS_FIRST;
790 sd_delete_cur_sn_unitdata_ind(nsapi);
791 sd_un_f_f1_m0(ll_unitdata_ind);
792
793 }
794
795 } /* sd_un_s_f1_m0() */