1 /******************************************************************************
2 *
3 * (C)Copyright 1998,1999 SysKonnect,
4 * a business unit of Schneider & Koch & Co. Datensysteme GmbH.
5 *
6 * See the file "skfddi.c" for further information.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * The information in this file is provided "AS IS" without warranty.
14 *
15 ******************************************************************************/
16
17 /*
18 * *******************************************************************
19 * This SBA code implements the Synchronous Bandwidth Allocation
20 * functions described in the "FDDI Synchronous Forum Implementer's
21 * Agreement" dated December 1th, 1993.
22 * *******************************************************************
23 *
24 * PURPOSE: The purpose of this function is to control
25 * synchronous allocations on a single FDDI segment.
26 * Allocations are limited to the primary FDDI ring.
27 * The SBM provides recovery mechanisms to recover
28 * unused bandwidth also resolves T_Neg and
29 * reconfiguration changes. Many of the SBM state
30 * machine inputs are sourced by the underlying
31 * FDDI sub-system supporting the SBA application.
32 *
33 * *******************************************************************
34 */
35
36 #include "h/types.h"
37 #include "h/fddi.h"
38 #include "h/smc.h"
39 #include "h/smt_p.h"
40
41
42 #ifndef SLIM_SMT
43
44 #ifdef ESS
45
46 #ifndef lint
47 static const char ID_sccs[] = "@(#)ess.c 1.10 96/02/23 (C) SK" ;
48 #define LINT_USE(x)
49 #else
50 #define LINT_USE(x) (x)=(x)
51 #endif
52 #define MS2BCLK(x) ((x)*12500L)
53
54 /*
55 -------------------------------------------------------------
56 LOCAL VARIABLES:
57 -------------------------------------------------------------
58 */
59
60 static const u_short plist_raf_alc_res[] = { SMT_P0012, SMT_P320B, SMT_P320F,
61 SMT_P3210, SMT_P0019, SMT_P001A,
62 SMT_P001D, 0 } ;
63
64 static const u_short plist_raf_chg_req[] = { SMT_P320B, SMT_P320F, SMT_P3210,
65 SMT_P001A, 0 } ;
66
67 static const struct fddi_addr smt_sba_da = {{0x80,0x01,0x43,0x00,0x80,0x0C}} ;
68 static const struct fddi_addr null_addr = {{0,0,0,0,0,0}} ;
69
70 /*
71 -------------------------------------------------------------
72 GLOBAL VARIABLES:
73 -------------------------------------------------------------
74 */
75
76
77 /*
78 -------------------------------------------------------------
79 LOCAL FUNCTIONS:
80 -------------------------------------------------------------
81 */
82
83 static void ess_send_response(struct s_smc *smc, struct smt_header *sm,
84 int sba_cmd);
85 static void ess_config_fifo(struct s_smc *smc);
86 static void ess_send_alc_req(struct s_smc *smc);
87 static void ess_send_frame(struct s_smc *smc, SMbuf *mb);
88
89 /*
90 -------------------------------------------------------------
91 EXTERNAL FUNCTIONS:
92 -------------------------------------------------------------
93 */
94
95 /*
96 -------------------------------------------------------------
97 PUBLIC FUNCTIONS:
98 -------------------------------------------------------------
99 */
100
101 void ess_timer_poll(struct s_smc *smc);
102 void ess_para_change(struct s_smc *smc);
103 int ess_raf_received_pack(struct s_smc *smc, SMbuf *mb, struct smt_header *sm,
104 int fs);
105 static int process_bw_alloc(struct s_smc *smc, long int payload, long int overhead);
106
107
108 /*
109 * --------------------------------------------------------------------------
110 * End Station Support (ESS)
111 * --------------------------------------------------------------------------
112 */
113
114 /*
115 * evaluate the RAF frame
116 */
ess_raf_received_pack(struct s_smc * smc,SMbuf * mb,struct smt_header * sm,int fs)117 int ess_raf_received_pack(struct s_smc *smc, SMbuf *mb, struct smt_header *sm,
118 int fs)
119 {
120 void *p ; /* universal pointer */
121 struct smt_p_0016 *cmd ; /* para: command for the ESS */
122 SMbuf *db ;
123 u_long msg_res_type ; /* recource type */
124 u_long payload, overhead ;
125 int local ;
126 int i ;
127
128 /*
129 * Message Processing Code
130 */
131 local = ((fs & L_INDICATOR) != 0) ;
132
133 /*
134 * get the resource type
135 */
136 if (!(p = (void *) sm_to_para(smc,sm,SMT_P0015))) {
137 DB_ESS("ESS: RAF frame error, parameter type not found");
138 return fs;
139 }
140 msg_res_type = ((struct smt_p_0015 *)p)->res_type ;
141
142 /*
143 * get the pointer to the ESS command
144 */
145 if (!(cmd = (struct smt_p_0016 *) sm_to_para(smc,sm,SMT_P0016))) {
146 /*
147 * error in frame: para ESS command was not found
148 */
149 DB_ESS("ESS: RAF frame error, parameter command not found");
150 return fs;
151 }
152
153 DB_ESSN(2, "fc %x ft %x", sm->smt_class, sm->smt_type);
154 DB_ESSN(2, "ver %x tran %x", sm->smt_version, sm->smt_tid);
155 DB_ESSN(2, "stn_id %s", addr_to_string(&sm->smt_source));
156
157 DB_ESSN(2, "infolen %x res %lx", sm->smt_len, msg_res_type);
158 DB_ESSN(2, "sbacmd %x", cmd->sba_cmd);
159
160 /*
161 * evaluate the ESS command
162 */
163 switch (cmd->sba_cmd) {
164
165 /*
166 * Process an ESS Allocation Request
167 */
168 case REQUEST_ALLOCATION :
169 /*
170 * check for an RAF Request (Allocation Request)
171 */
172 if (sm->smt_type == SMT_REQUEST) {
173 /*
174 * process the Allocation request only if the frame is
175 * local and no static allocation is used
176 */
177 if (!local || smc->mib.fddiESSPayload)
178 return fs;
179
180 p = (void *) sm_to_para(smc,sm,SMT_P0019) ;
181 for (i = 0; i < 5; i++) {
182 if (((struct smt_p_0019 *)p)->alloc_addr.a[i]) {
183 return fs;
184 }
185 }
186
187 /*
188 * Note: The Application should send a LAN_LOC_FRAME.
189 * The ESS do not send the Frame to the network!
190 */
191 smc->ess.alloc_trans_id = sm->smt_tid ;
192 DB_ESS("ESS: save Alloc Req Trans ID %x", sm->smt_tid);
193 p = (void *) sm_to_para(smc,sm,SMT_P320F) ;
194 ((struct smt_p_320f *)p)->mib_payload =
195 smc->mib.a[PATH0].fddiPATHSbaPayload ;
196 p = (void *) sm_to_para(smc,sm,SMT_P3210) ;
197 ((struct smt_p_3210 *)p)->mib_overhead =
198 smc->mib.a[PATH0].fddiPATHSbaOverhead ;
199 sm->smt_dest = smt_sba_da ;
200
201 if (smc->ess.local_sba_active)
202 return fs | I_INDICATOR;
203
204 if (!(db = smt_get_mbuf(smc)))
205 return fs;
206
207 db->sm_len = mb->sm_len ;
208 db->sm_off = mb->sm_off ;
209 memcpy(((char *)(db->sm_data+db->sm_off)),(char *)sm,
210 (int)db->sm_len) ;
211 dump_smt(smc,
212 (struct smt_header *)(db->sm_data+db->sm_off),
213 "RAF") ;
214 smt_send_frame(smc,db,FC_SMT_INFO,0) ;
215 return fs;
216 }
217
218 /*
219 * The RAF frame is an Allocation Response !
220 * check the parameters
221 */
222 if (smt_check_para(smc,sm,plist_raf_alc_res)) {
223 DB_ESS("ESS: RAF with para problem, ignoring");
224 return fs;
225 }
226
227 /*
228 * VERIFY THE FRAME IS WELL BUILT:
229 *
230 * 1. path index = primary ring only
231 * 2. resource type = sync bw only
232 * 3. trans action id = alloc_trans_id
233 * 4. reason code = success
234 *
235 * If any are violated, discard the RAF frame
236 */
237 if ((((struct smt_p_320b *)sm_to_para(smc,sm,SMT_P320B))->path_index
238 != PRIMARY_RING) ||
239 (msg_res_type != SYNC_BW) ||
240 (((struct smt_p_reason *)sm_to_para(smc,sm,SMT_P0012))->rdf_reason
241 != SMT_RDF_SUCCESS) ||
242 (sm->smt_tid != smc->ess.alloc_trans_id)) {
243
244 DB_ESS("ESS: Allocation Response not accepted");
245 return fs;
246 }
247
248 /*
249 * Extract message parameters
250 */
251 p = (void *) sm_to_para(smc,sm,SMT_P320F) ;
252 if (!p) {
253 printk(KERN_ERR "ESS: sm_to_para failed");
254 return fs;
255 }
256 payload = ((struct smt_p_320f *)p)->mib_payload ;
257 p = (void *) sm_to_para(smc,sm,SMT_P3210) ;
258 if (!p) {
259 printk(KERN_ERR "ESS: sm_to_para failed");
260 return fs;
261 }
262 overhead = ((struct smt_p_3210 *)p)->mib_overhead ;
263
264 DB_ESSN(2, "payload= %lx overhead= %lx",
265 payload, overhead);
266
267 /*
268 * process the bandwidth allocation
269 */
270 (void)process_bw_alloc(smc,(long)payload,(long)overhead) ;
271
272 return fs;
273 /* end of Process Allocation Request */
274
275 /*
276 * Process an ESS Change Request
277 */
278 case CHANGE_ALLOCATION :
279 /*
280 * except only replies
281 */
282 if (sm->smt_type != SMT_REQUEST) {
283 DB_ESS("ESS: Do not process Change Responses");
284 return fs;
285 }
286
287 /*
288 * check the para for the Change Request
289 */
290 if (smt_check_para(smc,sm,plist_raf_chg_req)) {
291 DB_ESS("ESS: RAF with para problem, ignoring");
292 return fs;
293 }
294
295 /*
296 * Verify the path index and resource
297 * type are correct. If any of
298 * these are false, don't process this
299 * change request frame.
300 */
301 if ((((struct smt_p_320b *)sm_to_para(smc,sm,SMT_P320B))->path_index
302 != PRIMARY_RING) || (msg_res_type != SYNC_BW)) {
303 DB_ESS("ESS: RAF frame with para problem, ignoring");
304 return fs;
305 }
306
307 /*
308 * Extract message queue parameters
309 */
310 p = (void *) sm_to_para(smc,sm,SMT_P320F) ;
311 payload = ((struct smt_p_320f *)p)->mib_payload ;
312 p = (void *) sm_to_para(smc,sm,SMT_P3210) ;
313 overhead = ((struct smt_p_3210 *)p)->mib_overhead ;
314
315 DB_ESSN(2, "ESS: Change Request from %s",
316 addr_to_string(&sm->smt_source));
317 DB_ESSN(2, "payload= %lx overhead= %lx",
318 payload, overhead);
319
320 /*
321 * process the bandwidth allocation
322 */
323 if(!process_bw_alloc(smc,(long)payload,(long)overhead))
324 return fs;
325
326 /*
327 * send an RAF Change Reply
328 */
329 ess_send_response(smc,sm,CHANGE_ALLOCATION) ;
330
331 return fs;
332 /* end of Process Change Request */
333
334 /*
335 * Process Report Response
336 */
337 case REPORT_ALLOCATION :
338 /*
339 * except only requests
340 */
341 if (sm->smt_type != SMT_REQUEST) {
342 DB_ESS("ESS: Do not process a Report Reply");
343 return fs;
344 }
345
346 DB_ESSN(2, "ESS: Report Request from %s",
347 addr_to_string(&sm->smt_source));
348
349 /*
350 * verify that the resource type is sync bw only
351 */
352 if (msg_res_type != SYNC_BW) {
353 DB_ESS("ESS: ignoring RAF with para problem");
354 return fs;
355 }
356
357 /*
358 * send an RAF Change Reply
359 */
360 ess_send_response(smc,sm,REPORT_ALLOCATION) ;
361
362 return fs;
363 /* end of Process Report Request */
364
365 default:
366 /*
367 * error in frame
368 */
369 DB_ESS("ESS: ignoring RAF with bad sba_cmd");
370 break ;
371 }
372
373 return fs;
374 }
375
376 /*
377 * determines the synchronous bandwidth, set the TSYNC register and the
378 * mib variables SBAPayload, SBAOverhead and fddiMACT-NEG.
379 */
process_bw_alloc(struct s_smc * smc,long int payload,long int overhead)380 static int process_bw_alloc(struct s_smc *smc, long int payload, long int overhead)
381 {
382 /*
383 * determine the synchronous bandwidth (sync_bw) in bytes per T-NEG,
384 * if the payload is greater than zero.
385 * For the SBAPayload and the SBAOverhead we have the following
386 * unite quations
387 * _ _
388 * | bytes |
389 * SBAPayload = | 8000 ------ |
390 * | s |
391 * - -
392 * _ _
393 * | bytes |
394 * SBAOverhead = | ------ |
395 * | T-NEG |
396 * - -
397 *
398 * T-NEG is described by the equation:
399 *
400 * (-) fddiMACT-NEG
401 * T-NEG = -------------------
402 * 12500000 1/s
403 *
404 * The number of bytes we are able to send is the payload
405 * plus the overhead.
406 *
407 * bytes T-NEG SBAPayload 8000 bytes/s
408 * sync_bw = SBAOverhead ------ + -----------------------------
409 * T-NEG T-NEG
410 *
411 *
412 * 1
413 * sync_bw = SBAOverhead + ---- (-)fddiMACT-NEG * SBAPayload
414 * 1562
415 *
416 */
417
418 /*
419 * set the mib attributes fddiPATHSbaOverhead, fddiPATHSbaPayload
420 */
421 /* if (smt_set_obj(smc,SMT_P320F,payload,S_SET)) {
422 DB_ESS("ESS: SMT does not accept the payload value");
423 return FALSE;
424 }
425 if (smt_set_obj(smc,SMT_P3210,overhead,S_SET)) {
426 DB_ESS("ESS: SMT does not accept the overhead value");
427 return FALSE;
428 } */
429
430 /* premliminary */
431 if (payload > MAX_PAYLOAD || overhead > 5000) {
432 DB_ESS("ESS: payload / overhead not accepted");
433 return FALSE;
434 }
435
436 /*
437 * start the iterative allocation process if the payload or the overhead
438 * are smaller than the parsed values
439 */
440 if (smc->mib.fddiESSPayload &&
441 ((u_long)payload != smc->mib.fddiESSPayload ||
442 (u_long)overhead != smc->mib.fddiESSOverhead)) {
443 smc->ess.raf_act_timer_poll = TRUE ;
444 smc->ess.timer_count = 0 ;
445 }
446
447 /*
448 * evulate the Payload
449 */
450 if (payload) {
451 DB_ESSN(2, "ESS: turn SMT_ST_SYNC_SERVICE bit on");
452 smc->ess.sync_bw_available = TRUE ;
453
454 smc->ess.sync_bw = overhead -
455 (long)smc->mib.m[MAC0].fddiMACT_Neg *
456 payload / 1562 ;
457 }
458 else {
459 DB_ESSN(2, "ESS: turn SMT_ST_SYNC_SERVICE bit off");
460 smc->ess.sync_bw_available = FALSE ;
461 smc->ess.sync_bw = 0 ;
462 overhead = 0 ;
463 }
464
465 smc->mib.a[PATH0].fddiPATHSbaPayload = payload ;
466 smc->mib.a[PATH0].fddiPATHSbaOverhead = overhead ;
467
468
469 DB_ESSN(2, "tsync = %lx", smc->ess.sync_bw);
470
471 ess_config_fifo(smc) ;
472 set_formac_tsync(smc,smc->ess.sync_bw) ;
473 return TRUE;
474 }
475
ess_send_response(struct s_smc * smc,struct smt_header * sm,int sba_cmd)476 static void ess_send_response(struct s_smc *smc, struct smt_header *sm,
477 int sba_cmd)
478 {
479 struct smt_sba_chg *chg ;
480 SMbuf *mb ;
481 void *p ;
482
483 /*
484 * get and initialize the response frame
485 */
486 if (sba_cmd == CHANGE_ALLOCATION) {
487 if (!(mb=smt_build_frame(smc,SMT_RAF,SMT_REPLY,
488 sizeof(struct smt_sba_chg))))
489 return ;
490 }
491 else {
492 if (!(mb=smt_build_frame(smc,SMT_RAF,SMT_REPLY,
493 sizeof(struct smt_sba_rep_res))))
494 return ;
495 }
496
497 chg = smtod(mb,struct smt_sba_chg *) ;
498 chg->smt.smt_tid = sm->smt_tid ;
499 chg->smt.smt_dest = sm->smt_source ;
500
501 /* set P15 */
502 chg->s_type.para.p_type = SMT_P0015 ;
503 chg->s_type.para.p_len = sizeof(struct smt_p_0015) - PARA_LEN ;
504 chg->s_type.res_type = SYNC_BW ;
505
506 /* set P16 */
507 chg->cmd.para.p_type = SMT_P0016 ;
508 chg->cmd.para.p_len = sizeof(struct smt_p_0016) - PARA_LEN ;
509 chg->cmd.sba_cmd = sba_cmd ;
510
511 /* set P320B */
512 chg->path.para.p_type = SMT_P320B ;
513 chg->path.para.p_len = sizeof(struct smt_p_320b) - PARA_LEN ;
514 chg->path.mib_index = SBAPATHINDEX ;
515 chg->path.path_pad = 0;
516 chg->path.path_index = PRIMARY_RING ;
517
518 /* set P320F */
519 chg->payload.para.p_type = SMT_P320F ;
520 chg->payload.para.p_len = sizeof(struct smt_p_320f) - PARA_LEN ;
521 chg->payload.mib_index = SBAPATHINDEX ;
522 chg->payload.mib_payload = smc->mib.a[PATH0].fddiPATHSbaPayload ;
523
524 /* set P3210 */
525 chg->overhead.para.p_type = SMT_P3210 ;
526 chg->overhead.para.p_len = sizeof(struct smt_p_3210) - PARA_LEN ;
527 chg->overhead.mib_index = SBAPATHINDEX ;
528 chg->overhead.mib_overhead = smc->mib.a[PATH0].fddiPATHSbaOverhead ;
529
530 if (sba_cmd == CHANGE_ALLOCATION) {
531 /* set P1A */
532 chg->cat.para.p_type = SMT_P001A ;
533 chg->cat.para.p_len = sizeof(struct smt_p_001a) - PARA_LEN ;
534 p = (void *) sm_to_para(smc,sm,SMT_P001A) ;
535 chg->cat.category = ((struct smt_p_001a *)p)->category ;
536 }
537 dump_smt(smc,(struct smt_header *)chg,"RAF") ;
538 ess_send_frame(smc,mb) ;
539 }
540
ess_timer_poll(struct s_smc * smc)541 void ess_timer_poll(struct s_smc *smc)
542 {
543 if (!smc->ess.raf_act_timer_poll)
544 return ;
545
546 DB_ESSN(2, "ESS: timer_poll");
547
548 smc->ess.timer_count++ ;
549 if (smc->ess.timer_count == 10) {
550 smc->ess.timer_count = 0 ;
551 ess_send_alc_req(smc) ;
552 }
553 }
554
ess_send_alc_req(struct s_smc * smc)555 static void ess_send_alc_req(struct s_smc *smc)
556 {
557 struct smt_sba_alc_req *req ;
558 SMbuf *mb ;
559
560 /*
561 * send never allocation request where the requested payload and
562 * overhead is zero or deallocate bandwidth when no bandwidth is
563 * parsed
564 */
565 if (!smc->mib.fddiESSPayload) {
566 smc->mib.fddiESSOverhead = 0 ;
567 }
568 else {
569 if (!smc->mib.fddiESSOverhead)
570 smc->mib.fddiESSOverhead = DEFAULT_OV ;
571 }
572
573 if (smc->mib.fddiESSOverhead ==
574 smc->mib.a[PATH0].fddiPATHSbaOverhead &&
575 smc->mib.fddiESSPayload ==
576 smc->mib.a[PATH0].fddiPATHSbaPayload){
577 smc->ess.raf_act_timer_poll = FALSE ;
578 smc->ess.timer_count = 7 ; /* next RAF alc req after 3 s */
579 return ;
580 }
581
582 /*
583 * get and initialize the response frame
584 */
585 if (!(mb=smt_build_frame(smc,SMT_RAF,SMT_REQUEST,
586 sizeof(struct smt_sba_alc_req))))
587 return ;
588 req = smtod(mb,struct smt_sba_alc_req *) ;
589 req->smt.smt_tid = smc->ess.alloc_trans_id = smt_get_tid(smc) ;
590 req->smt.smt_dest = smt_sba_da ;
591
592 /* set P15 */
593 req->s_type.para.p_type = SMT_P0015 ;
594 req->s_type.para.p_len = sizeof(struct smt_p_0015) - PARA_LEN ;
595 req->s_type.res_type = SYNC_BW ;
596
597 /* set P16 */
598 req->cmd.para.p_type = SMT_P0016 ;
599 req->cmd.para.p_len = sizeof(struct smt_p_0016) - PARA_LEN ;
600 req->cmd.sba_cmd = REQUEST_ALLOCATION ;
601
602 /*
603 * set the parameter type and parameter length of all used
604 * parameters
605 */
606
607 /* set P320B */
608 req->path.para.p_type = SMT_P320B ;
609 req->path.para.p_len = sizeof(struct smt_p_320b) - PARA_LEN ;
610 req->path.mib_index = SBAPATHINDEX ;
611 req->path.path_pad = 0;
612 req->path.path_index = PRIMARY_RING ;
613
614 /* set P0017 */
615 req->pl_req.para.p_type = SMT_P0017 ;
616 req->pl_req.para.p_len = sizeof(struct smt_p_0017) - PARA_LEN ;
617 req->pl_req.sba_pl_req = smc->mib.fddiESSPayload -
618 smc->mib.a[PATH0].fddiPATHSbaPayload ;
619
620 /* set P0018 */
621 req->ov_req.para.p_type = SMT_P0018 ;
622 req->ov_req.para.p_len = sizeof(struct smt_p_0018) - PARA_LEN ;
623 req->ov_req.sba_ov_req = smc->mib.fddiESSOverhead -
624 smc->mib.a[PATH0].fddiPATHSbaOverhead ;
625
626 /* set P320F */
627 req->payload.para.p_type = SMT_P320F ;
628 req->payload.para.p_len = sizeof(struct smt_p_320f) - PARA_LEN ;
629 req->payload.mib_index = SBAPATHINDEX ;
630 req->payload.mib_payload = smc->mib.a[PATH0].fddiPATHSbaPayload ;
631
632 /* set P3210 */
633 req->overhead.para.p_type = SMT_P3210 ;
634 req->overhead.para.p_len = sizeof(struct smt_p_3210) - PARA_LEN ;
635 req->overhead.mib_index = SBAPATHINDEX ;
636 req->overhead.mib_overhead = smc->mib.a[PATH0].fddiPATHSbaOverhead ;
637
638 /* set P19 */
639 req->a_addr.para.p_type = SMT_P0019 ;
640 req->a_addr.para.p_len = sizeof(struct smt_p_0019) - PARA_LEN ;
641 req->a_addr.sba_pad = 0;
642 req->a_addr.alloc_addr = null_addr ;
643
644 /* set P1A */
645 req->cat.para.p_type = SMT_P001A ;
646 req->cat.para.p_len = sizeof(struct smt_p_001a) - PARA_LEN ;
647 req->cat.category = smc->mib.fddiESSCategory ;
648
649 /* set P1B */
650 req->tneg.para.p_type = SMT_P001B ;
651 req->tneg.para.p_len = sizeof(struct smt_p_001b) - PARA_LEN ;
652 req->tneg.max_t_neg = smc->mib.fddiESSMaxTNeg ;
653
654 /* set P1C */
655 req->segm.para.p_type = SMT_P001C ;
656 req->segm.para.p_len = sizeof(struct smt_p_001c) - PARA_LEN ;
657 req->segm.min_seg_siz = smc->mib.fddiESSMinSegmentSize ;
658
659 dump_smt(smc,(struct smt_header *)req,"RAF") ;
660 ess_send_frame(smc,mb) ;
661 }
662
ess_send_frame(struct s_smc * smc,SMbuf * mb)663 static void ess_send_frame(struct s_smc *smc, SMbuf *mb)
664 {
665 /*
666 * check if the frame must be send to the own ESS
667 */
668 if (smc->ess.local_sba_active) {
669 /*
670 * Send the Change Reply to the local SBA
671 */
672 DB_ESS("ESS:Send to the local SBA");
673 if (!smc->ess.sba_reply_pend)
674 smc->ess.sba_reply_pend = mb ;
675 else {
676 DB_ESS("Frame is lost - another frame was pending");
677 smt_free_mbuf(smc,mb) ;
678 }
679 }
680 else {
681 /*
682 * Send the SBA RAF Change Reply to the network
683 */
684 DB_ESS("ESS:Send to the network");
685 smt_send_frame(smc,mb,FC_SMT_INFO,0) ;
686 }
687 }
688
ess_para_change(struct s_smc * smc)689 void ess_para_change(struct s_smc *smc)
690 {
691 (void)process_bw_alloc(smc,(long)smc->mib.a[PATH0].fddiPATHSbaPayload,
692 (long)smc->mib.a[PATH0].fddiPATHSbaOverhead) ;
693 }
694
ess_config_fifo(struct s_smc * smc)695 static void ess_config_fifo(struct s_smc *smc)
696 {
697 /*
698 * if nothing to do exit
699 */
700 if (smc->mib.a[PATH0].fddiPATHSbaPayload) {
701 if (smc->hw.fp.fifo.fifo_config_mode & SYNC_TRAFFIC_ON &&
702 (smc->hw.fp.fifo.fifo_config_mode&SEND_ASYNC_AS_SYNC) ==
703 smc->mib.fddiESSSynchTxMode) {
704 return ;
705 }
706 }
707 else {
708 if (!(smc->hw.fp.fifo.fifo_config_mode & SYNC_TRAFFIC_ON)) {
709 return ;
710 }
711 }
712
713 /*
714 * split up the FIFO and reinitialize the queues
715 */
716 formac_reinit_tx(smc) ;
717 }
718
719 #endif /* ESS */
720
721 #endif /* no SLIM_SMT */
722
723
