1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /******************************************************************************
3 *
4 * (C)Copyright 1998,1999 SysKonnect,
5 * a business unit of Schneider & Koch & Co. Datensysteme GmbH.
6 *
7 * See the file "skfddi.c" for further information.
8 *
9 * The information in this file is provided "AS IS" without warranty.
10 *
11 ******************************************************************************/
12
13 #include "h/types.h"
14 #include "h/fddi.h"
15 #include "h/smc.h"
16 #include "h/smt_p.h"
17 #include <linux/bitrev.h>
18 #include <linux/kernel.h>
19
20 #define KERNEL
21 #include "h/smtstate.h"
22
23 /*
24 * FC in SMbuf
25 */
26 #define m_fc(mb) ((mb)->sm_data[0])
27
28 #define SMT_TID_MAGIC 0x1f0a7b3c
29
30 static const char *const smt_type_name[] = {
31 "SMT_00??", "SMT_INFO", "SMT_02??", "SMT_03??",
32 "SMT_04??", "SMT_05??", "SMT_06??", "SMT_07??",
33 "SMT_08??", "SMT_09??", "SMT_0A??", "SMT_0B??",
34 "SMT_0C??", "SMT_0D??", "SMT_0E??", "SMT_NSA"
35 } ;
36
37 static const char *const smt_class_name[] = {
38 "UNKNOWN","NIF","SIF_CONFIG","SIF_OPER","ECF","RAF","RDF",
39 "SRF","PMF_GET","PMF_SET","ESF"
40 } ;
41
42 #define LAST_CLASS (SMT_PMF_SET)
43
44 static const struct fddi_addr SMT_Unknown = {
45 { 0,0,0x1f,0,0,0 }
46 } ;
47
48 /*
49 * function prototypes
50 */
51 #ifdef LITTLE_ENDIAN
52 static int smt_swap_short(u_short s);
53 #endif
54 static int mac_index(struct s_smc *smc, int mac);
55 static int phy_index(struct s_smc *smc, int phy);
56 static int mac_con_resource_index(struct s_smc *smc, int mac);
57 static int phy_con_resource_index(struct s_smc *smc, int phy);
58 static void smt_send_rdf(struct s_smc *smc, SMbuf *rej, int fc, int reason,
59 int local);
60 static void smt_send_nif(struct s_smc *smc, const struct fddi_addr *dest,
61 int fc, u_long tid, int type, int local);
62 static void smt_send_ecf(struct s_smc *smc, struct fddi_addr *dest, int fc,
63 u_long tid, int type, int len);
64 static void smt_echo_test(struct s_smc *smc, int dna);
65 static void smt_send_sif_config(struct s_smc *smc, struct fddi_addr *dest,
66 u_long tid, int local);
67 static void smt_send_sif_operation(struct s_smc *smc, struct fddi_addr *dest,
68 u_long tid, int local);
69 #ifdef LITTLE_ENDIAN
70 static void smt_string_swap(char *data, const char *format, int len);
71 #endif
72 static void smt_add_frame_len(SMbuf *mb, int len);
73 static void smt_fill_una(struct s_smc *smc, struct smt_p_una *una);
74 static void smt_fill_sde(struct s_smc *smc, struct smt_p_sde *sde);
75 static void smt_fill_state(struct s_smc *smc, struct smt_p_state *state);
76 static void smt_fill_timestamp(struct s_smc *smc, struct smt_p_timestamp *ts);
77 static void smt_fill_policy(struct s_smc *smc, struct smt_p_policy *policy);
78 static void smt_fill_latency(struct s_smc *smc, struct smt_p_latency *latency);
79 static void smt_fill_neighbor(struct s_smc *smc, struct smt_p_neighbor *neighbor);
80 static int smt_fill_path(struct s_smc *smc, struct smt_p_path *path);
81 static void smt_fill_mac_status(struct s_smc *smc, struct smt_p_mac_status *st);
82 static void smt_fill_lem(struct s_smc *smc, struct smt_p_lem *lem, int phy);
83 static void smt_fill_version(struct s_smc *smc, struct smt_p_version *vers);
84 static void smt_fill_fsc(struct s_smc *smc, struct smt_p_fsc *fsc);
85 static void smt_fill_mac_counter(struct s_smc *smc, struct smt_p_mac_counter *mc);
86 static void smt_fill_mac_fnc(struct s_smc *smc, struct smt_p_mac_fnc *fnc);
87 static void smt_fill_manufacturer(struct s_smc *smc,
88 struct smp_p_manufacturer *man);
89 static void smt_fill_user(struct s_smc *smc, struct smp_p_user *user);
90 static void smt_fill_setcount(struct s_smc *smc, struct smt_p_setcount *setcount);
91 static void smt_fill_echo(struct s_smc *smc, struct smt_p_echo *echo, u_long seed,
92 int len);
93
94 static void smt_clear_una_dna(struct s_smc *smc);
95 static void smt_clear_old_una_dna(struct s_smc *smc);
96 #ifdef CONCENTRATOR
97 static int entity_to_index(void);
98 #endif
99 static void update_dac(struct s_smc *smc, int report);
100 static int div_ratio(u_long upper, u_long lower);
101 #ifdef USE_CAN_ADDR
102 static void hwm_conv_can(struct s_smc *smc, char *data, int len);
103 #else
104 #define hwm_conv_can(smc,data,len)
105 #endif
106
107
is_my_addr(const struct s_smc * smc,const struct fddi_addr * addr)108 static inline int is_my_addr(const struct s_smc *smc,
109 const struct fddi_addr *addr)
110 {
111 return(*(short *)(&addr->a[0]) ==
112 *(short *)(&smc->mib.m[MAC0].fddiMACSMTAddress.a[0])
113 && *(short *)(&addr->a[2]) ==
114 *(short *)(&smc->mib.m[MAC0].fddiMACSMTAddress.a[2])
115 && *(short *)(&addr->a[4]) ==
116 *(short *)(&smc->mib.m[MAC0].fddiMACSMTAddress.a[4])) ;
117 }
118
is_broadcast(const struct fddi_addr * addr)119 static inline int is_broadcast(const struct fddi_addr *addr)
120 {
121 return *(u_short *)(&addr->a[0]) == 0xffff &&
122 *(u_short *)(&addr->a[2]) == 0xffff &&
123 *(u_short *)(&addr->a[4]) == 0xffff;
124 }
125
is_individual(const struct fddi_addr * addr)126 static inline int is_individual(const struct fddi_addr *addr)
127 {
128 return !(addr->a[0] & GROUP_ADDR);
129 }
130
is_equal(const struct fddi_addr * addr1,const struct fddi_addr * addr2)131 static inline int is_equal(const struct fddi_addr *addr1,
132 const struct fddi_addr *addr2)
133 {
134 return *(u_short *)(&addr1->a[0]) == *(u_short *)(&addr2->a[0]) &&
135 *(u_short *)(&addr1->a[2]) == *(u_short *)(&addr2->a[2]) &&
136 *(u_short *)(&addr1->a[4]) == *(u_short *)(&addr2->a[4]);
137 }
138
139 /*
140 * list of mandatory paras in frames
141 */
142 static const u_short plist_nif[] = { SMT_P_UNA,SMT_P_SDE,SMT_P_STATE,0 } ;
143
144 /*
145 * init SMT agent
146 */
smt_agent_init(struct s_smc * smc)147 void smt_agent_init(struct s_smc *smc)
148 {
149 int i ;
150
151 /*
152 * get MAC address
153 */
154 smc->mib.m[MAC0].fddiMACSMTAddress = smc->hw.fddi_home_addr ;
155
156 /*
157 * get OUI address from driver (bia == built-in-address)
158 */
159 smc->mib.fddiSMTStationId.sid_oem[0] = 0 ;
160 smc->mib.fddiSMTStationId.sid_oem[1] = 0 ;
161 driver_get_bia(smc,&smc->mib.fddiSMTStationId.sid_node) ;
162 for (i = 0 ; i < 6 ; i ++) {
163 smc->mib.fddiSMTStationId.sid_node.a[i] =
164 bitrev8(smc->mib.fddiSMTStationId.sid_node.a[i]);
165 }
166 smc->mib.fddiSMTManufacturerData[0] =
167 smc->mib.fddiSMTStationId.sid_node.a[0] ;
168 smc->mib.fddiSMTManufacturerData[1] =
169 smc->mib.fddiSMTStationId.sid_node.a[1] ;
170 smc->mib.fddiSMTManufacturerData[2] =
171 smc->mib.fddiSMTStationId.sid_node.a[2] ;
172 smc->sm.smt_tid = 0 ;
173 smc->mib.m[MAC0].fddiMACDupAddressTest = DA_NONE ;
174 smc->mib.m[MAC0].fddiMACUNDA_Flag = FALSE ;
175 #ifndef SLIM_SMT
176 smt_clear_una_dna(smc) ;
177 smt_clear_old_una_dna(smc) ;
178 #endif
179 for (i = 0 ; i < SMT_MAX_TEST ; i++)
180 smc->sm.pend[i] = 0 ;
181 smc->sm.please_reconnect = 0 ;
182 smc->sm.uniq_ticks = 0 ;
183 }
184
185 /*
186 * SMT task
187 * forever
188 * delay 30 seconds
189 * send NIF
190 * check tvu & tvd
191 * end
192 */
smt_agent_task(struct s_smc * smc)193 void smt_agent_task(struct s_smc *smc)
194 {
195 smt_timer_start(smc,&smc->sm.smt_timer, (u_long)1000000L,
196 EV_TOKEN(EVENT_SMT,SM_TIMER)) ;
197 DB_SMT("SMT agent task");
198 }
199
200 #ifndef SMT_REAL_TOKEN_CT
smt_emulate_token_ct(struct s_smc * smc,int mac_index)201 void smt_emulate_token_ct(struct s_smc *smc, int mac_index)
202 {
203 u_long count;
204 u_long time;
205
206
207 time = smt_get_time();
208 count = ((time - smc->sm.last_tok_time[mac_index]) *
209 100)/TICKS_PER_SECOND;
210
211 /*
212 * Only when ring is up we will have a token count. The
213 * flag is unfortunately a single instance value. This
214 * doesn't matter now, because we currently have only
215 * one MAC instance.
216 */
217 if (smc->hw.mac_ring_is_up){
218 smc->mib.m[mac_index].fddiMACToken_Ct += count;
219 }
220
221 /* Remember current time */
222 smc->sm.last_tok_time[mac_index] = time;
223
224 }
225 #endif
226
227 /*ARGSUSED1*/
smt_event(struct s_smc * smc,int event)228 void smt_event(struct s_smc *smc, int event)
229 {
230 u_long time ;
231 #ifndef SMT_REAL_TOKEN_CT
232 int i ;
233 #endif
234
235
236 if (smc->sm.please_reconnect) {
237 smc->sm.please_reconnect -- ;
238 if (smc->sm.please_reconnect == 0) {
239 /* Counted down */
240 queue_event(smc,EVENT_ECM,EC_CONNECT) ;
241 }
242 }
243
244 if (event == SM_FAST)
245 return ;
246
247 /*
248 * timer for periodic cleanup in driver
249 * reset and start the watchdog (FM2)
250 * ESS timer
251 * SBA timer
252 */
253 smt_timer_poll(smc) ;
254 smt_start_watchdog(smc) ;
255 #ifndef SLIM_SMT
256 #ifndef BOOT
257 #ifdef ESS
258 ess_timer_poll(smc) ;
259 #endif
260 #endif
261 #ifdef SBA
262 sba_timer_poll(smc) ;
263 #endif
264
265 smt_srf_event(smc,0,0,0) ;
266
267 #endif /* no SLIM_SMT */
268
269 time = smt_get_time() ;
270
271 if (time - smc->sm.smt_last_lem >= TICKS_PER_SECOND*8) {
272 /*
273 * Use 8 sec. for the time intervall, it simplifies the
274 * LER estimation.
275 */
276 struct fddi_mib_m *mib ;
277 u_long upper ;
278 u_long lower ;
279 int cond ;
280 int port;
281 struct s_phy *phy ;
282 /*
283 * calculate LEM bit error rate
284 */
285 sm_lem_evaluate(smc) ;
286 smc->sm.smt_last_lem = time ;
287
288 /*
289 * check conditions
290 */
291 #ifndef SLIM_SMT
292 mac_update_counter(smc) ;
293 mib = smc->mib.m ;
294 upper =
295 (mib->fddiMACLost_Ct - mib->fddiMACOld_Lost_Ct) +
296 (mib->fddiMACError_Ct - mib->fddiMACOld_Error_Ct) ;
297 lower =
298 (mib->fddiMACFrame_Ct - mib->fddiMACOld_Frame_Ct) +
299 (mib->fddiMACLost_Ct - mib->fddiMACOld_Lost_Ct) ;
300 mib->fddiMACFrameErrorRatio = div_ratio(upper,lower) ;
301
302 cond =
303 ((!mib->fddiMACFrameErrorThreshold &&
304 mib->fddiMACError_Ct != mib->fddiMACOld_Error_Ct) ||
305 (mib->fddiMACFrameErrorRatio >
306 mib->fddiMACFrameErrorThreshold)) ;
307
308 if (cond != mib->fddiMACFrameErrorFlag)
309 smt_srf_event(smc,SMT_COND_MAC_FRAME_ERROR,
310 INDEX_MAC,cond) ;
311
312 upper =
313 (mib->fddiMACNotCopied_Ct - mib->fddiMACOld_NotCopied_Ct) ;
314 lower =
315 upper +
316 (mib->fddiMACCopied_Ct - mib->fddiMACOld_Copied_Ct) ;
317 mib->fddiMACNotCopiedRatio = div_ratio(upper,lower) ;
318
319 cond =
320 ((!mib->fddiMACNotCopiedThreshold &&
321 mib->fddiMACNotCopied_Ct !=
322 mib->fddiMACOld_NotCopied_Ct)||
323 (mib->fddiMACNotCopiedRatio >
324 mib->fddiMACNotCopiedThreshold)) ;
325
326 if (cond != mib->fddiMACNotCopiedFlag)
327 smt_srf_event(smc,SMT_COND_MAC_NOT_COPIED,
328 INDEX_MAC,cond) ;
329
330 /*
331 * set old values
332 */
333 mib->fddiMACOld_Frame_Ct = mib->fddiMACFrame_Ct ;
334 mib->fddiMACOld_Copied_Ct = mib->fddiMACCopied_Ct ;
335 mib->fddiMACOld_Error_Ct = mib->fddiMACError_Ct ;
336 mib->fddiMACOld_Lost_Ct = mib->fddiMACLost_Ct ;
337 mib->fddiMACOld_NotCopied_Ct = mib->fddiMACNotCopied_Ct ;
338
339 /*
340 * Check port EBError Condition
341 */
342 for (port = 0; port < NUMPHYS; port ++) {
343 phy = &smc->y[port] ;
344
345 if (!phy->mib->fddiPORTHardwarePresent) {
346 continue;
347 }
348
349 cond = (phy->mib->fddiPORTEBError_Ct -
350 phy->mib->fddiPORTOldEBError_Ct > 5) ;
351
352 /* If ratio is more than 5 in 8 seconds
353 * Set the condition.
354 */
355 smt_srf_event(smc,SMT_COND_PORT_EB_ERROR,
356 (int) (INDEX_PORT+ phy->np) ,cond) ;
357
358 /*
359 * set old values
360 */
361 phy->mib->fddiPORTOldEBError_Ct =
362 phy->mib->fddiPORTEBError_Ct ;
363 }
364
365 #endif /* no SLIM_SMT */
366 }
367
368 #ifndef SLIM_SMT
369
370 if (time - smc->sm.smt_last_notify >= (u_long)
371 (smc->mib.fddiSMTTT_Notify * TICKS_PER_SECOND) ) {
372 /*
373 * we can either send an announcement or a request
374 * a request will trigger a reply so that we can update
375 * our dna
376 * note: same tid must be used until reply is received
377 */
378 if (!smc->sm.pend[SMT_TID_NIF])
379 smc->sm.pend[SMT_TID_NIF] = smt_get_tid(smc) ;
380 smt_send_nif(smc,&fddi_broadcast, FC_SMT_NSA,
381 smc->sm.pend[SMT_TID_NIF], SMT_REQUEST,0) ;
382 smc->sm.smt_last_notify = time ;
383 }
384
385 /*
386 * check timer
387 */
388 if (smc->sm.smt_tvu &&
389 time - smc->sm.smt_tvu > 228*TICKS_PER_SECOND) {
390 DB_SMT("SMT : UNA expired");
391 smc->sm.smt_tvu = 0 ;
392
393 if (!is_equal(&smc->mib.m[MAC0].fddiMACUpstreamNbr,
394 &SMT_Unknown)){
395 /* Do not update unknown address */
396 smc->mib.m[MAC0].fddiMACOldUpstreamNbr=
397 smc->mib.m[MAC0].fddiMACUpstreamNbr ;
398 }
399 smc->mib.m[MAC0].fddiMACUpstreamNbr = SMT_Unknown ;
400 smc->mib.m[MAC0].fddiMACUNDA_Flag = FALSE ;
401 /*
402 * Make sure the fddiMACUNDA_Flag = FALSE is
403 * included in the SRF so we don't generate
404 * a separate SRF for the deassertion of this
405 * condition
406 */
407 update_dac(smc,0) ;
408 smt_srf_event(smc, SMT_EVENT_MAC_NEIGHBOR_CHANGE,
409 INDEX_MAC,0) ;
410 }
411 if (smc->sm.smt_tvd &&
412 time - smc->sm.smt_tvd > 228*TICKS_PER_SECOND) {
413 DB_SMT("SMT : DNA expired");
414 smc->sm.smt_tvd = 0 ;
415 if (!is_equal(&smc->mib.m[MAC0].fddiMACDownstreamNbr,
416 &SMT_Unknown)){
417 /* Do not update unknown address */
418 smc->mib.m[MAC0].fddiMACOldDownstreamNbr=
419 smc->mib.m[MAC0].fddiMACDownstreamNbr ;
420 }
421 smc->mib.m[MAC0].fddiMACDownstreamNbr = SMT_Unknown ;
422 smt_srf_event(smc, SMT_EVENT_MAC_NEIGHBOR_CHANGE,
423 INDEX_MAC,0) ;
424 }
425
426 #endif /* no SLIM_SMT */
427
428 #ifndef SMT_REAL_TOKEN_CT
429 /*
430 * Token counter emulation section. If hardware supports the token
431 * count, the token counter will be updated in mac_update_counter.
432 */
433 for (i = MAC0; i < NUMMACS; i++ ){
434 if (time - smc->sm.last_tok_time[i] > 2*TICKS_PER_SECOND ){
435 smt_emulate_token_ct( smc, i );
436 }
437 }
438 #endif
439
440 smt_timer_start(smc,&smc->sm.smt_timer, (u_long)1000000L,
441 EV_TOKEN(EVENT_SMT,SM_TIMER)) ;
442 }
443
div_ratio(u_long upper,u_long lower)444 static int div_ratio(u_long upper, u_long lower)
445 {
446 if ((upper<<16L) < upper)
447 upper = 0xffff0000L ;
448 else
449 upper <<= 16L ;
450 if (!lower)
451 return 0;
452 return (int)(upper/lower) ;
453 }
454
455 #ifndef SLIM_SMT
456
457 /*
458 * receive packet handler
459 */
smt_received_pack(struct s_smc * smc,SMbuf * mb,int fs)460 void smt_received_pack(struct s_smc *smc, SMbuf *mb, int fs)
461 /* int fs; frame status */
462 {
463 struct smt_header *sm ;
464 int local ;
465
466 int illegal = 0 ;
467
468 switch (m_fc(mb)) {
469 case FC_SMT_INFO :
470 case FC_SMT_LAN_LOC :
471 case FC_SMT_LOC :
472 case FC_SMT_NSA :
473 break ;
474 default :
475 smt_free_mbuf(smc,mb) ;
476 return ;
477 }
478
479 smc->mib.m[MAC0].fddiMACSMTCopied_Ct++ ;
480 sm = smtod(mb,struct smt_header *) ;
481 local = ((fs & L_INDICATOR) != 0) ;
482 hwm_conv_can(smc,(char *)sm,12) ;
483
484 /* check destination address */
485 if (is_individual(&sm->smt_dest) && !is_my_addr(smc,&sm->smt_dest)) {
486 smt_free_mbuf(smc,mb) ;
487 return ;
488 }
489 #if 0 /* for DUP recognition, do NOT filter them */
490 /* ignore loop back packets */
491 if (is_my_addr(smc,&sm->smt_source) && !local) {
492 smt_free_mbuf(smc,mb) ;
493 return ;
494 }
495 #endif
496
497 smt_swap_para(sm,(int) mb->sm_len,1) ;
498 DB_SMT("SMT : received packet [%s] at 0x%p",
499 smt_type_name[m_fc(mb) & 0xf], sm);
500 DB_SMT("SMT : version %d, class %s",
501 sm->smt_version,
502 smt_class_name[sm->smt_class > LAST_CLASS ? 0 : sm->smt_class]);
503
504 #ifdef SBA
505 /*
506 * check if NSA frame
507 */
508 if (m_fc(mb) == FC_SMT_NSA && sm->smt_class == SMT_NIF &&
509 (sm->smt_type == SMT_ANNOUNCE || sm->smt_type == SMT_REQUEST)) {
510 smc->sba.sm = sm ;
511 sba(smc,NIF) ;
512 }
513 #endif
514
515 /*
516 * ignore any packet with NSA and A-indicator set
517 */
518 if ( (fs & A_INDICATOR) && m_fc(mb) == FC_SMT_NSA) {
519 DB_SMT("SMT : ignoring NSA with A-indicator set from %pM",
520 &sm->smt_source);
521 smt_free_mbuf(smc,mb) ;
522 return ;
523 }
524
525 /*
526 * ignore frames with illegal length
527 */
528 if (((sm->smt_class == SMT_ECF) && (sm->smt_len > SMT_MAX_ECHO_LEN)) ||
529 ((sm->smt_class != SMT_ECF) && (sm->smt_len > SMT_MAX_INFO_LEN))) {
530 smt_free_mbuf(smc,mb) ;
531 return ;
532 }
533
534 /*
535 * check SMT version
536 */
537 switch (sm->smt_class) {
538 case SMT_NIF :
539 case SMT_SIF_CONFIG :
540 case SMT_SIF_OPER :
541 case SMT_ECF :
542 if (sm->smt_version != SMT_VID)
543 illegal = 1;
544 break ;
545 default :
546 if (sm->smt_version != SMT_VID_2)
547 illegal = 1;
548 break ;
549 }
550 if (illegal) {
551 DB_SMT("SMT : version = %d, dest = %pM",
552 sm->smt_version, &sm->smt_source);
553 smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_VERSION,local) ;
554 smt_free_mbuf(smc,mb) ;
555 return ;
556 }
557 if ((sm->smt_len > mb->sm_len - sizeof(struct smt_header)) ||
558 ((sm->smt_len & 3) && (sm->smt_class != SMT_ECF))) {
559 DB_SMT("SMT: info length error, len = %d", sm->smt_len);
560 smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_LENGTH,local) ;
561 smt_free_mbuf(smc,mb) ;
562 return ;
563 }
564 switch (sm->smt_class) {
565 case SMT_NIF :
566 if (smt_check_para(smc,sm,plist_nif)) {
567 DB_SMT("SMT: NIF with para problem, ignoring");
568 break ;
569 }
570 switch (sm->smt_type) {
571 case SMT_ANNOUNCE :
572 case SMT_REQUEST :
573 if (!(fs & C_INDICATOR) && m_fc(mb) == FC_SMT_NSA
574 && is_broadcast(&sm->smt_dest)) {
575 struct smt_p_state *st ;
576
577 /* set my UNA */
578 if (!is_equal(
579 &smc->mib.m[MAC0].fddiMACUpstreamNbr,
580 &sm->smt_source)) {
581 DB_SMT("SMT : updated my UNA = %pM",
582 &sm->smt_source);
583 if (!is_equal(&smc->mib.m[MAC0].
584 fddiMACUpstreamNbr,&SMT_Unknown)){
585 /* Do not update unknown address */
586 smc->mib.m[MAC0].fddiMACOldUpstreamNbr=
587 smc->mib.m[MAC0].fddiMACUpstreamNbr ;
588 }
589
590 smc->mib.m[MAC0].fddiMACUpstreamNbr =
591 sm->smt_source ;
592 smt_srf_event(smc,
593 SMT_EVENT_MAC_NEIGHBOR_CHANGE,
594 INDEX_MAC,0) ;
595 smt_echo_test(smc,0) ;
596 }
597 smc->sm.smt_tvu = smt_get_time() ;
598 st = (struct smt_p_state *)
599 sm_to_para(smc,sm,SMT_P_STATE) ;
600 if (st) {
601 smc->mib.m[MAC0].fddiMACUNDA_Flag =
602 (st->st_dupl_addr & SMT_ST_MY_DUPA) ?
603 TRUE : FALSE ;
604 update_dac(smc,1) ;
605 }
606 }
607 if ((sm->smt_type == SMT_REQUEST) &&
608 is_individual(&sm->smt_source) &&
609 ((!(fs & A_INDICATOR) && m_fc(mb) == FC_SMT_NSA) ||
610 (m_fc(mb) != FC_SMT_NSA))) {
611 DB_SMT("SMT : replying to NIF request %pM",
612 &sm->smt_source);
613 smt_send_nif(smc,&sm->smt_source,
614 FC_SMT_INFO,
615 sm->smt_tid,
616 SMT_REPLY,local) ;
617 }
618 break ;
619 case SMT_REPLY :
620 DB_SMT("SMT : received NIF response from %pM",
621 &sm->smt_source);
622 if (fs & A_INDICATOR) {
623 smc->sm.pend[SMT_TID_NIF] = 0 ;
624 DB_SMT("SMT : duplicate address");
625 smc->mib.m[MAC0].fddiMACDupAddressTest =
626 DA_FAILED ;
627 smc->r.dup_addr_test = DA_FAILED ;
628 queue_event(smc,EVENT_RMT,RM_DUP_ADDR) ;
629 smc->mib.m[MAC0].fddiMACDA_Flag = TRUE ;
630 update_dac(smc,1) ;
631 break ;
632 }
633 if (sm->smt_tid == smc->sm.pend[SMT_TID_NIF]) {
634 smc->sm.pend[SMT_TID_NIF] = 0 ;
635 /* set my DNA */
636 if (!is_equal(
637 &smc->mib.m[MAC0].fddiMACDownstreamNbr,
638 &sm->smt_source)) {
639 DB_SMT("SMT : updated my DNA");
640 if (!is_equal(&smc->mib.m[MAC0].
641 fddiMACDownstreamNbr, &SMT_Unknown)){
642 /* Do not update unknown address */
643 smc->mib.m[MAC0].fddiMACOldDownstreamNbr =
644 smc->mib.m[MAC0].fddiMACDownstreamNbr ;
645 }
646
647 smc->mib.m[MAC0].fddiMACDownstreamNbr =
648 sm->smt_source ;
649 smt_srf_event(smc,
650 SMT_EVENT_MAC_NEIGHBOR_CHANGE,
651 INDEX_MAC,0) ;
652 smt_echo_test(smc,1) ;
653 }
654 smc->mib.m[MAC0].fddiMACDA_Flag = FALSE ;
655 update_dac(smc,1) ;
656 smc->sm.smt_tvd = smt_get_time() ;
657 smc->mib.m[MAC0].fddiMACDupAddressTest =
658 DA_PASSED ;
659 if (smc->r.dup_addr_test != DA_PASSED) {
660 smc->r.dup_addr_test = DA_PASSED ;
661 queue_event(smc,EVENT_RMT,RM_DUP_ADDR) ;
662 }
663 }
664 else if (sm->smt_tid ==
665 smc->sm.pend[SMT_TID_NIF_TEST]) {
666 DB_SMT("SMT : NIF test TID ok");
667 }
668 else {
669 DB_SMT("SMT : expected TID %lx, got %x",
670 smc->sm.pend[SMT_TID_NIF], sm->smt_tid);
671 }
672 break ;
673 default :
674 illegal = 2 ;
675 break ;
676 }
677 break ;
678 case SMT_SIF_CONFIG : /* station information */
679 if (sm->smt_type != SMT_REQUEST)
680 break ;
681 DB_SMT("SMT : replying to SIF Config request from %pM",
682 &sm->smt_source);
683 smt_send_sif_config(smc,&sm->smt_source,sm->smt_tid,local) ;
684 break ;
685 case SMT_SIF_OPER : /* station information */
686 if (sm->smt_type != SMT_REQUEST)
687 break ;
688 DB_SMT("SMT : replying to SIF Operation request from %pM",
689 &sm->smt_source);
690 smt_send_sif_operation(smc,&sm->smt_source,sm->smt_tid,local) ;
691 break ;
692 case SMT_ECF : /* echo frame */
693 switch (sm->smt_type) {
694 case SMT_REPLY :
695 smc->mib.priv.fddiPRIVECF_Reply_Rx++ ;
696 DB_SMT("SMT: received ECF reply from %pM",
697 &sm->smt_source);
698 if (sm_to_para(smc,sm,SMT_P_ECHODATA) == NULL) {
699 DB_SMT("SMT: ECHODATA missing");
700 break ;
701 }
702 if (sm->smt_tid == smc->sm.pend[SMT_TID_ECF]) {
703 DB_SMT("SMT : ECF test TID ok");
704 }
705 else if (sm->smt_tid == smc->sm.pend[SMT_TID_ECF_UNA]) {
706 DB_SMT("SMT : ECF test UNA ok");
707 }
708 else if (sm->smt_tid == smc->sm.pend[SMT_TID_ECF_DNA]) {
709 DB_SMT("SMT : ECF test DNA ok");
710 }
711 else {
712 DB_SMT("SMT : expected TID %lx, got %x",
713 smc->sm.pend[SMT_TID_ECF],
714 sm->smt_tid);
715 }
716 break ;
717 case SMT_REQUEST :
718 smc->mib.priv.fddiPRIVECF_Req_Rx++ ;
719 {
720 if (sm->smt_len && !sm_to_para(smc,sm,SMT_P_ECHODATA)) {
721 DB_SMT("SMT: ECF with para problem,sending RDF");
722 smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_LENGTH,
723 local) ;
724 break ;
725 }
726 DB_SMT("SMT - sending ECF reply to %pM",
727 &sm->smt_source);
728
729 /* set destination addr. & reply */
730 sm->smt_dest = sm->smt_source ;
731 sm->smt_type = SMT_REPLY ;
732 dump_smt(smc,sm,"ECF REPLY") ;
733 smc->mib.priv.fddiPRIVECF_Reply_Tx++ ;
734 smt_send_frame(smc,mb,FC_SMT_INFO,local) ;
735 return ; /* DON'T free mbuf */
736 }
737 default :
738 illegal = 1 ;
739 break ;
740 }
741 break ;
742 #ifndef BOOT
743 case SMT_RAF : /* resource allocation */
744 #ifdef ESS
745 DB_ESSN(2, "ESS: RAF frame received");
746 fs = ess_raf_received_pack(smc,mb,sm,fs) ;
747 #endif
748
749 #ifdef SBA
750 DB_SBAN(2, "SBA: RAF frame received") ;
751 sba_raf_received_pack(smc,sm,fs) ;
752 #endif
753 break ;
754 case SMT_RDF : /* request denied */
755 smc->mib.priv.fddiPRIVRDF_Rx++ ;
756 break ;
757 case SMT_ESF : /* extended service - not supported */
758 if (sm->smt_type == SMT_REQUEST) {
759 DB_SMT("SMT - received ESF, sending RDF");
760 smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_CLASS,local) ;
761 }
762 break ;
763 case SMT_PMF_GET :
764 case SMT_PMF_SET :
765 if (sm->smt_type != SMT_REQUEST)
766 break ;
767 /* update statistics */
768 if (sm->smt_class == SMT_PMF_GET)
769 smc->mib.priv.fddiPRIVPMF_Get_Rx++ ;
770 else
771 smc->mib.priv.fddiPRIVPMF_Set_Rx++ ;
772 /*
773 * ignore PMF SET with I/G set
774 */
775 if ((sm->smt_class == SMT_PMF_SET) &&
776 !is_individual(&sm->smt_dest)) {
777 DB_SMT("SMT: ignoring PMF-SET with I/G set");
778 break ;
779 }
780 smt_pmf_received_pack(smc,mb, local) ;
781 break ;
782 case SMT_SRF :
783 dump_smt(smc,sm,"SRF received") ;
784 break ;
785 default :
786 if (sm->smt_type != SMT_REQUEST)
787 break ;
788 /*
789 * For frames with unknown class:
790 * we need to send a RDF frame according to 8.1.3.1.1,
791 * only if it is a REQUEST.
792 */
793 DB_SMT("SMT : class = %d, send RDF to %pM",
794 sm->smt_class, &sm->smt_source);
795
796 smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_CLASS,local) ;
797 break ;
798 #endif
799 }
800 if (illegal) {
801 DB_SMT("SMT: discarding invalid frame, reason = %d", illegal);
802 }
803 smt_free_mbuf(smc,mb) ;
804 }
805
update_dac(struct s_smc * smc,int report)806 static void update_dac(struct s_smc *smc, int report)
807 {
808 int cond ;
809
810 cond = ( smc->mib.m[MAC0].fddiMACUNDA_Flag |
811 smc->mib.m[MAC0].fddiMACDA_Flag) != 0 ;
812 if (report && (cond != smc->mib.m[MAC0].fddiMACDuplicateAddressCond))
813 smt_srf_event(smc, SMT_COND_MAC_DUP_ADDR,INDEX_MAC,cond) ;
814 else
815 smc->mib.m[MAC0].fddiMACDuplicateAddressCond = cond ;
816 }
817
818 /*
819 * send SMT frame
820 * set source address
821 * set station ID
822 * send frame
823 */
smt_send_frame(struct s_smc * smc,SMbuf * mb,int fc,int local)824 void smt_send_frame(struct s_smc *smc, SMbuf *mb, int fc, int local)
825 /* SMbuf *mb; buffer to send */
826 /* int fc; FC value */
827 {
828 struct smt_header *sm ;
829
830 if (!smc->r.sm_ma_avail && !local) {
831 smt_free_mbuf(smc,mb) ;
832 return ;
833 }
834 sm = smtod(mb,struct smt_header *) ;
835 sm->smt_source = smc->mib.m[MAC0].fddiMACSMTAddress ;
836 sm->smt_sid = smc->mib.fddiSMTStationId ;
837
838 smt_swap_para(sm,(int) mb->sm_len,0) ; /* swap para & header */
839 hwm_conv_can(smc,(char *)sm,12) ; /* convert SA and DA */
840 smc->mib.m[MAC0].fddiMACSMTTransmit_Ct++ ;
841 smt_send_mbuf(smc,mb,local ? FC_SMT_LOC : fc) ;
842 }
843
844 /*
845 * generate and send RDF
846 */
smt_send_rdf(struct s_smc * smc,SMbuf * rej,int fc,int reason,int local)847 static void smt_send_rdf(struct s_smc *smc, SMbuf *rej, int fc, int reason,
848 int local)
849 /* SMbuf *rej; mbuf of offending frame */
850 /* int fc; FC of denied frame */
851 /* int reason; reason code */
852 {
853 SMbuf *mb ;
854 struct smt_header *sm ; /* header of offending frame */
855 struct smt_rdf *rdf ;
856 int len ;
857 int frame_len ;
858
859 sm = smtod(rej,struct smt_header *) ;
860 if (sm->smt_type != SMT_REQUEST)
861 return ;
862
863 DB_SMT("SMT: sending RDF to %pM,reason = 0x%x",
864 &sm->smt_source, reason);
865
866
867 /*
868 * note: get framelength from MAC length, NOT from SMT header
869 * smt header length is included in sm_len
870 */
871 frame_len = rej->sm_len ;
872
873 if (!(mb=smt_build_frame(smc,SMT_RDF,SMT_REPLY,sizeof(struct smt_rdf))))
874 return ;
875 rdf = smtod(mb,struct smt_rdf *) ;
876 rdf->smt.smt_tid = sm->smt_tid ; /* use TID from sm */
877 rdf->smt.smt_dest = sm->smt_source ; /* set dest = source */
878
879 /* set P12 */
880 rdf->reason.para.p_type = SMT_P_REASON ;
881 rdf->reason.para.p_len = sizeof(struct smt_p_reason) - PARA_LEN ;
882 rdf->reason.rdf_reason = reason ;
883
884 /* set P14 */
885 rdf->version.para.p_type = SMT_P_VERSION ;
886 rdf->version.para.p_len = sizeof(struct smt_p_version) - PARA_LEN ;
887 rdf->version.v_pad = 0 ;
888 rdf->version.v_n = 1 ;
889 rdf->version.v_index = 1 ;
890 rdf->version.v_version[0] = SMT_VID_2 ;
891 rdf->version.v_pad2 = 0 ;
892
893 /* set P13 */
894 if ((unsigned int) frame_len <= SMT_MAX_INFO_LEN - sizeof(*rdf) +
895 2*sizeof(struct smt_header))
896 len = frame_len ;
897 else
898 len = SMT_MAX_INFO_LEN - sizeof(*rdf) +
899 2*sizeof(struct smt_header) ;
900 /* make length multiple of 4 */
901 len &= ~3 ;
902 rdf->refused.para.p_type = SMT_P_REFUSED ;
903 /* length of para is smt_frame + ref_fc */
904 rdf->refused.para.p_len = len + 4 ;
905 rdf->refused.ref_fc = fc ;
906
907 /* swap it back */
908 smt_swap_para(sm,frame_len,0) ;
909
910 memcpy((char *) &rdf->refused.ref_header,(char *) sm,len) ;
911
912 len -= sizeof(struct smt_header) ;
913 mb->sm_len += len ;
914 rdf->smt.smt_len += len ;
915
916 dump_smt(smc,(struct smt_header *)rdf,"RDF") ;
917 smc->mib.priv.fddiPRIVRDF_Tx++ ;
918 smt_send_frame(smc,mb,FC_SMT_INFO,local) ;
919 }
920
921 /*
922 * generate and send NIF
923 */
smt_send_nif(struct s_smc * smc,const struct fddi_addr * dest,int fc,u_long tid,int type,int local)924 static void smt_send_nif(struct s_smc *smc, const struct fddi_addr *dest,
925 int fc, u_long tid, int type, int local)
926 /* struct fddi_addr *dest; dest address */
927 /* int fc; frame control */
928 /* u_long tid; transaction id */
929 /* int type; frame type */
930 {
931 struct smt_nif *nif ;
932 SMbuf *mb ;
933
934 if (!(mb = smt_build_frame(smc,SMT_NIF,type,sizeof(struct smt_nif))))
935 return ;
936 nif = smtod(mb, struct smt_nif *) ;
937 smt_fill_una(smc,&nif->una) ; /* set UNA */
938 smt_fill_sde(smc,&nif->sde) ; /* set station descriptor */
939 smt_fill_state(smc,&nif->state) ; /* set state information */
940 #ifdef SMT6_10
941 smt_fill_fsc(smc,&nif->fsc) ; /* set frame status cap. */
942 #endif
943 nif->smt.smt_dest = *dest ; /* destination address */
944 nif->smt.smt_tid = tid ; /* transaction ID */
945 dump_smt(smc,(struct smt_header *)nif,"NIF") ;
946 smt_send_frame(smc,mb,fc,local) ;
947 }
948
949 #ifdef DEBUG
950 /*
951 * send NIF request (test purpose)
952 */
smt_send_nif_request(struct s_smc * smc,struct fddi_addr * dest)953 static void smt_send_nif_request(struct s_smc *smc, struct fddi_addr *dest)
954 {
955 smc->sm.pend[SMT_TID_NIF_TEST] = smt_get_tid(smc) ;
956 smt_send_nif(smc,dest, FC_SMT_INFO, smc->sm.pend[SMT_TID_NIF_TEST],
957 SMT_REQUEST,0) ;
958 }
959
960 /*
961 * send ECF request (test purpose)
962 */
smt_send_ecf_request(struct s_smc * smc,struct fddi_addr * dest,int len)963 static void smt_send_ecf_request(struct s_smc *smc, struct fddi_addr *dest,
964 int len)
965 {
966 smc->sm.pend[SMT_TID_ECF] = smt_get_tid(smc) ;
967 smt_send_ecf(smc,dest, FC_SMT_INFO, smc->sm.pend[SMT_TID_ECF],
968 SMT_REQUEST,len) ;
969 }
970 #endif
971
972 /*
973 * echo test
974 */
smt_echo_test(struct s_smc * smc,int dna)975 static void smt_echo_test(struct s_smc *smc, int dna)
976 {
977 u_long tid ;
978
979 smc->sm.pend[dna ? SMT_TID_ECF_DNA : SMT_TID_ECF_UNA] =
980 tid = smt_get_tid(smc) ;
981 smt_send_ecf(smc, dna ?
982 &smc->mib.m[MAC0].fddiMACDownstreamNbr :
983 &smc->mib.m[MAC0].fddiMACUpstreamNbr,
984 FC_SMT_INFO,tid, SMT_REQUEST, (SMT_TEST_ECHO_LEN & ~3)-8) ;
985 }
986
987 /*
988 * generate and send ECF
989 */
smt_send_ecf(struct s_smc * smc,struct fddi_addr * dest,int fc,u_long tid,int type,int len)990 static void smt_send_ecf(struct s_smc *smc, struct fddi_addr *dest, int fc,
991 u_long tid, int type, int len)
992 /* struct fddi_addr *dest; dest address */
993 /* int fc; frame control */
994 /* u_long tid; transaction id */
995 /* int type; frame type */
996 /* int len; frame length */
997 {
998 struct smt_ecf *ecf ;
999 SMbuf *mb ;
1000
1001 if (!(mb = smt_build_frame(smc,SMT_ECF,type,SMT_ECF_LEN + len)))
1002 return ;
1003 ecf = smtod(mb, struct smt_ecf *) ;
1004
1005 smt_fill_echo(smc,&ecf->ec_echo,tid,len) ; /* set ECHO */
1006 ecf->smt.smt_dest = *dest ; /* destination address */
1007 ecf->smt.smt_tid = tid ; /* transaction ID */
1008 smc->mib.priv.fddiPRIVECF_Req_Tx++ ;
1009 smt_send_frame(smc,mb,fc,0) ;
1010 }
1011
1012 /*
1013 * generate and send SIF config response
1014 */
1015
smt_send_sif_config(struct s_smc * smc,struct fddi_addr * dest,u_long tid,int local)1016 static void smt_send_sif_config(struct s_smc *smc, struct fddi_addr *dest,
1017 u_long tid, int local)
1018 /* struct fddi_addr *dest; dest address */
1019 /* u_long tid; transaction id */
1020 {
1021 struct smt_sif_config *sif ;
1022 SMbuf *mb ;
1023 int len ;
1024 if (!(mb = smt_build_frame(smc,SMT_SIF_CONFIG,SMT_REPLY,
1025 SIZEOF_SMT_SIF_CONFIG)))
1026 return ;
1027
1028 sif = smtod(mb, struct smt_sif_config *) ;
1029 smt_fill_timestamp(smc,&sif->ts) ; /* set time stamp */
1030 smt_fill_sde(smc,&sif->sde) ; /* set station descriptor */
1031 smt_fill_version(smc,&sif->version) ; /* set version information */
1032 smt_fill_state(smc,&sif->state) ; /* set state information */
1033 smt_fill_policy(smc,&sif->policy) ; /* set station policy */
1034 smt_fill_latency(smc,&sif->latency); /* set station latency */
1035 smt_fill_neighbor(smc,&sif->neighbor); /* set station neighbor */
1036 smt_fill_setcount(smc,&sif->setcount) ; /* set count */
1037 len = smt_fill_path(smc,&sif->path); /* set station path descriptor*/
1038 sif->smt.smt_dest = *dest ; /* destination address */
1039 sif->smt.smt_tid = tid ; /* transaction ID */
1040 smt_add_frame_len(mb,len) ; /* adjust length fields */
1041 dump_smt(smc,(struct smt_header *)sif,"SIF Configuration Reply") ;
1042 smt_send_frame(smc,mb,FC_SMT_INFO,local) ;
1043 }
1044
1045 /*
1046 * generate and send SIF operation response
1047 */
1048
smt_send_sif_operation(struct s_smc * smc,struct fddi_addr * dest,u_long tid,int local)1049 static void smt_send_sif_operation(struct s_smc *smc, struct fddi_addr *dest,
1050 u_long tid, int local)
1051 /* struct fddi_addr *dest; dest address */
1052 /* u_long tid; transaction id */
1053 {
1054 struct smt_sif_operation *sif ;
1055 SMbuf *mb ;
1056 int ports ;
1057 int i ;
1058
1059 ports = NUMPHYS ;
1060 #ifndef CONCENTRATOR
1061 if (smc->s.sas == SMT_SAS)
1062 ports = 1 ;
1063 #endif
1064
1065 if (!(mb = smt_build_frame(smc,SMT_SIF_OPER,SMT_REPLY,
1066 struct_size(sif, lem, ports))))
1067 return ;
1068 sif = smtod(mb, typeof(sif));
1069 smt_fill_timestamp(smc,&sif->ts) ; /* set time stamp */
1070 smt_fill_mac_status(smc,&sif->status) ; /* set mac status */
1071 smt_fill_mac_counter(smc,&sif->mc) ; /* set mac counter field */
1072 smt_fill_mac_fnc(smc,&sif->fnc) ; /* set frame not copied counter */
1073 smt_fill_manufacturer(smc,&sif->man) ; /* set manufacturer field */
1074 smt_fill_user(smc,&sif->user) ; /* set user field */
1075 smt_fill_setcount(smc,&sif->setcount) ; /* set count */
1076 /*
1077 * set link error mon information
1078 */
1079 if (ports == 1) {
1080 smt_fill_lem(smc,sif->lem,PS) ;
1081 }
1082 else {
1083 for (i = 0 ; i < ports ; i++) {
1084 smt_fill_lem(smc,&sif->lem[i],i) ;
1085 }
1086 }
1087
1088 sif->smt.smt_dest = *dest ; /* destination address */
1089 sif->smt.smt_tid = tid ; /* transaction ID */
1090 dump_smt(smc,(struct smt_header *)sif,"SIF Operation Reply") ;
1091 smt_send_frame(smc,mb,FC_SMT_INFO,local) ;
1092 }
1093
1094 /*
1095 * get and initialize SMT frame
1096 */
smt_build_frame(struct s_smc * smc,int class,int type,int length)1097 SMbuf *smt_build_frame(struct s_smc *smc, int class, int type,
1098 int length)
1099 {
1100 SMbuf *mb ;
1101 struct smt_header *smt ;
1102
1103 #if 0
1104 if (!smc->r.sm_ma_avail) {
1105 return 0;
1106 }
1107 #endif
1108 if (!(mb = smt_get_mbuf(smc)))
1109 return mb;
1110
1111 mb->sm_len = length ;
1112 smt = smtod(mb, struct smt_header *) ;
1113 smt->smt_dest = fddi_broadcast ; /* set dest = broadcast */
1114 smt->smt_class = class ;
1115 smt->smt_type = type ;
1116 switch (class) {
1117 case SMT_NIF :
1118 case SMT_SIF_CONFIG :
1119 case SMT_SIF_OPER :
1120 case SMT_ECF :
1121 smt->smt_version = SMT_VID ;
1122 break ;
1123 default :
1124 smt->smt_version = SMT_VID_2 ;
1125 break ;
1126 }
1127 smt->smt_tid = smt_get_tid(smc) ; /* set transaction ID */
1128 smt->smt_pad = 0 ;
1129 smt->smt_len = length - sizeof(struct smt_header) ;
1130 return mb;
1131 }
1132
smt_add_frame_len(SMbuf * mb,int len)1133 static void smt_add_frame_len(SMbuf *mb, int len)
1134 {
1135 struct smt_header *smt ;
1136
1137 smt = smtod(mb, struct smt_header *) ;
1138 smt->smt_len += len ;
1139 mb->sm_len += len ;
1140 }
1141
1142
1143
1144 /*
1145 * fill values in UNA parameter
1146 */
smt_fill_una(struct s_smc * smc,struct smt_p_una * una)1147 static void smt_fill_una(struct s_smc *smc, struct smt_p_una *una)
1148 {
1149 SMTSETPARA(una,SMT_P_UNA) ;
1150 una->una_pad = 0 ;
1151 una->una_node = smc->mib.m[MAC0].fddiMACUpstreamNbr ;
1152 }
1153
1154 /*
1155 * fill values in SDE parameter
1156 */
smt_fill_sde(struct s_smc * smc,struct smt_p_sde * sde)1157 static void smt_fill_sde(struct s_smc *smc, struct smt_p_sde *sde)
1158 {
1159 SMTSETPARA(sde,SMT_P_SDE) ;
1160 sde->sde_non_master = smc->mib.fddiSMTNonMaster_Ct ;
1161 sde->sde_master = smc->mib.fddiSMTMaster_Ct ;
1162 sde->sde_mac_count = NUMMACS ; /* only 1 MAC */
1163 #ifdef CONCENTRATOR
1164 sde->sde_type = SMT_SDE_CONCENTRATOR ;
1165 #else
1166 sde->sde_type = SMT_SDE_STATION ;
1167 #endif
1168 }
1169
1170 /*
1171 * fill in values in station state parameter
1172 */
smt_fill_state(struct s_smc * smc,struct smt_p_state * state)1173 static void smt_fill_state(struct s_smc *smc, struct smt_p_state *state)
1174 {
1175 int top ;
1176 int twist ;
1177
1178 SMTSETPARA(state,SMT_P_STATE) ;
1179 state->st_pad = 0 ;
1180
1181 /* determine topology */
1182 top = 0 ;
1183 if (smc->mib.fddiSMTPeerWrapFlag) {
1184 top |= SMT_ST_WRAPPED ; /* state wrapped */
1185 }
1186 #ifdef CONCENTRATOR
1187 if (cfm_status_unattached(smc)) {
1188 top |= SMT_ST_UNATTACHED ; /* unattached concentrator */
1189 }
1190 #endif
1191 if ((twist = pcm_status_twisted(smc)) & 1) {
1192 top |= SMT_ST_TWISTED_A ; /* twisted cable */
1193 }
1194 if (twist & 2) {
1195 top |= SMT_ST_TWISTED_B ; /* twisted cable */
1196 }
1197 #ifdef OPT_SRF
1198 top |= SMT_ST_SRF ;
1199 #endif
1200 if (pcm_rooted_station(smc))
1201 top |= SMT_ST_ROOTED_S ;
1202 if (smc->mib.a[0].fddiPATHSbaPayload != 0)
1203 top |= SMT_ST_SYNC_SERVICE ;
1204 state->st_topology = top ;
1205 state->st_dupl_addr =
1206 ((smc->mib.m[MAC0].fddiMACDA_Flag ? SMT_ST_MY_DUPA : 0 ) |
1207 (smc->mib.m[MAC0].fddiMACUNDA_Flag ? SMT_ST_UNA_DUPA : 0)) ;
1208 }
1209
1210 /*
1211 * fill values in timestamp parameter
1212 */
smt_fill_timestamp(struct s_smc * smc,struct smt_p_timestamp * ts)1213 static void smt_fill_timestamp(struct s_smc *smc, struct smt_p_timestamp *ts)
1214 {
1215
1216 SMTSETPARA(ts,SMT_P_TIMESTAMP) ;
1217 smt_set_timestamp(smc,ts->ts_time) ;
1218 }
1219
smt_set_timestamp(struct s_smc * smc,u_char * p)1220 void smt_set_timestamp(struct s_smc *smc, u_char *p)
1221 {
1222 u_long time ;
1223 u_long utime ;
1224
1225 /*
1226 * timestamp is 64 bits long ; resolution is 80 nS
1227 * our clock resolution is 10mS
1228 * 10mS/80ns = 125000 ~ 2^17 = 131072
1229 */
1230 utime = smt_get_time() ;
1231 time = utime * 100 ;
1232 time /= TICKS_PER_SECOND ;
1233 p[0] = 0 ;
1234 p[1] = (u_char)((time>>(8+8+8+8-1)) & 1) ;
1235 p[2] = (u_char)(time>>(8+8+8-1)) ;
1236 p[3] = (u_char)(time>>(8+8-1)) ;
1237 p[4] = (u_char)(time>>(8-1)) ;
1238 p[5] = (u_char)(time<<1) ;
1239 p[6] = (u_char)(smc->sm.uniq_ticks>>8) ;
1240 p[7] = (u_char)smc->sm.uniq_ticks ;
1241 /*
1242 * make sure we don't wrap: restart whenever the upper digits change
1243 */
1244 if (utime != smc->sm.uniq_time) {
1245 smc->sm.uniq_ticks = 0 ;
1246 }
1247 smc->sm.uniq_ticks++ ;
1248 smc->sm.uniq_time = utime ;
1249 }
1250
1251 /*
1252 * fill values in station policy parameter
1253 */
smt_fill_policy(struct s_smc * smc,struct smt_p_policy * policy)1254 static void smt_fill_policy(struct s_smc *smc, struct smt_p_policy *policy)
1255 {
1256 int i ;
1257 const u_char *map ;
1258 u_short in ;
1259 u_short out ;
1260
1261 /*
1262 * MIB para 101b (fddiSMTConnectionPolicy) coding
1263 * is different from 0005 coding
1264 */
1265 static const u_char ansi_weirdness[16] = {
1266 0,7,5,3,8,1,6,4,9,10,2,11,12,13,14,15
1267 } ;
1268 SMTSETPARA(policy,SMT_P_POLICY) ;
1269
1270 out = 0 ;
1271 in = smc->mib.fddiSMTConnectionPolicy ;
1272 for (i = 0, map = ansi_weirdness ; i < 16 ; i++) {
1273 if (in & 1)
1274 out |= (1<<*map) ;
1275 in >>= 1 ;
1276 map++ ;
1277 }
1278 policy->pl_config = smc->mib.fddiSMTConfigPolicy ;
1279 policy->pl_connect = out ;
1280 }
1281
1282 /*
1283 * fill values in latency equivalent parameter
1284 */
smt_fill_latency(struct s_smc * smc,struct smt_p_latency * latency)1285 static void smt_fill_latency(struct s_smc *smc, struct smt_p_latency *latency)
1286 {
1287 SMTSETPARA(latency,SMT_P_LATENCY) ;
1288
1289 latency->lt_phyout_idx1 = phy_index(smc,0) ;
1290 latency->lt_latency1 = 10 ; /* in octets (byte clock) */
1291 /*
1292 * note: latency has two phy entries by definition
1293 * for a SAS, the 2nd one is null
1294 */
1295 if (smc->s.sas == SMT_DAS) {
1296 latency->lt_phyout_idx2 = phy_index(smc,1) ;
1297 latency->lt_latency2 = 10 ; /* in octets (byte clock) */
1298 }
1299 else {
1300 latency->lt_phyout_idx2 = 0 ;
1301 latency->lt_latency2 = 0 ;
1302 }
1303 }
1304
1305 /*
1306 * fill values in MAC neighbors parameter
1307 */
smt_fill_neighbor(struct s_smc * smc,struct smt_p_neighbor * neighbor)1308 static void smt_fill_neighbor(struct s_smc *smc, struct smt_p_neighbor *neighbor)
1309 {
1310 SMTSETPARA(neighbor,SMT_P_NEIGHBORS) ;
1311
1312 neighbor->nb_mib_index = INDEX_MAC ;
1313 neighbor->nb_mac_index = mac_index(smc,1) ;
1314 neighbor->nb_una = smc->mib.m[MAC0].fddiMACUpstreamNbr ;
1315 neighbor->nb_dna = smc->mib.m[MAC0].fddiMACDownstreamNbr ;
1316 }
1317
1318 /*
1319 * fill values in path descriptor
1320 */
1321 #ifdef CONCENTRATOR
1322 #define ALLPHYS NUMPHYS
1323 #else
1324 #define ALLPHYS ((smc->s.sas == SMT_SAS) ? 1 : 2)
1325 #endif
1326
smt_fill_path(struct s_smc * smc,struct smt_p_path * path)1327 static int smt_fill_path(struct s_smc *smc, struct smt_p_path *path)
1328 {
1329 SK_LOC_DECL(int,type) ;
1330 SK_LOC_DECL(int,state) ;
1331 SK_LOC_DECL(int,remote) ;
1332 SK_LOC_DECL(int,mac) ;
1333 int len ;
1334 int p ;
1335 int physp ;
1336 struct smt_phy_rec *phy ;
1337 struct smt_mac_rec *pd_mac ;
1338
1339 len = PARA_LEN +
1340 sizeof(struct smt_mac_rec) * NUMMACS +
1341 sizeof(struct smt_phy_rec) * ALLPHYS ;
1342 path->para.p_type = SMT_P_PATH ;
1343 path->para.p_len = len - PARA_LEN ;
1344
1345 /* PHYs */
1346 for (p = 0,phy = path->pd_phy ; p < ALLPHYS ; p++, phy++) {
1347 physp = p ;
1348 #ifndef CONCENTRATOR
1349 if (smc->s.sas == SMT_SAS)
1350 physp = PS ;
1351 #endif
1352 pcm_status_state(smc,physp,&type,&state,&remote,&mac) ;
1353 #ifdef LITTLE_ENDIAN
1354 phy->phy_mib_index = smt_swap_short((u_short)p+INDEX_PORT) ;
1355 #else
1356 phy->phy_mib_index = p+INDEX_PORT ;
1357 #endif
1358 phy->phy_type = type ;
1359 phy->phy_connect_state = state ;
1360 phy->phy_remote_type = remote ;
1361 phy->phy_remote_mac = mac ;
1362 phy->phy_resource_idx = phy_con_resource_index(smc,p) ;
1363 }
1364
1365 /* MAC */
1366 pd_mac = (struct smt_mac_rec *) phy ;
1367 pd_mac->mac_addr = smc->mib.m[MAC0].fddiMACSMTAddress ;
1368 pd_mac->mac_resource_idx = mac_con_resource_index(smc,1) ;
1369 return len;
1370 }
1371
1372 /*
1373 * fill values in mac status
1374 */
smt_fill_mac_status(struct s_smc * smc,struct smt_p_mac_status * st)1375 static void smt_fill_mac_status(struct s_smc *smc, struct smt_p_mac_status *st)
1376 {
1377 SMTSETPARA(st,SMT_P_MAC_STATUS) ;
1378
1379 st->st_mib_index = INDEX_MAC ;
1380 st->st_mac_index = mac_index(smc,1) ;
1381
1382 mac_update_counter(smc) ;
1383 /*
1384 * timer values are represented in SMT as 2's complement numbers
1385 * units : internal : 2's complement BCLK
1386 */
1387 st->st_t_req = smc->mib.m[MAC0].fddiMACT_Req ;
1388 st->st_t_neg = smc->mib.m[MAC0].fddiMACT_Neg ;
1389 st->st_t_max = smc->mib.m[MAC0].fddiMACT_Max ;
1390 st->st_tvx_value = smc->mib.m[MAC0].fddiMACTvxValue ;
1391 st->st_t_min = smc->mib.m[MAC0].fddiMACT_Min ;
1392
1393 st->st_sba = smc->mib.a[PATH0].fddiPATHSbaPayload ;
1394 st->st_frame_ct = smc->mib.m[MAC0].fddiMACFrame_Ct ;
1395 st->st_error_ct = smc->mib.m[MAC0].fddiMACError_Ct ;
1396 st->st_lost_ct = smc->mib.m[MAC0].fddiMACLost_Ct ;
1397 }
1398
1399 /*
1400 * fill values in LEM status
1401 */
smt_fill_lem(struct s_smc * smc,struct smt_p_lem * lem,int phy)1402 static void smt_fill_lem(struct s_smc *smc, struct smt_p_lem *lem, int phy)
1403 {
1404 struct fddi_mib_p *mib ;
1405
1406 mib = smc->y[phy].mib ;
1407
1408 SMTSETPARA(lem,SMT_P_LEM) ;
1409 lem->lem_mib_index = phy+INDEX_PORT ;
1410 lem->lem_phy_index = phy_index(smc,phy) ;
1411 lem->lem_pad2 = 0 ;
1412 lem->lem_cutoff = mib->fddiPORTLer_Cutoff ;
1413 lem->lem_alarm = mib->fddiPORTLer_Alarm ;
1414 /* long term bit error rate */
1415 lem->lem_estimate = mib->fddiPORTLer_Estimate ;
1416 /* # of rejected connections */
1417 lem->lem_reject_ct = mib->fddiPORTLem_Reject_Ct ;
1418 lem->lem_ct = mib->fddiPORTLem_Ct ; /* total number of errors */
1419 }
1420
1421 /*
1422 * fill version parameter
1423 */
smt_fill_version(struct s_smc * smc,struct smt_p_version * vers)1424 static void smt_fill_version(struct s_smc *smc, struct smt_p_version *vers)
1425 {
1426 SK_UNUSED(smc) ;
1427 SMTSETPARA(vers,SMT_P_VERSION) ;
1428 vers->v_pad = 0 ;
1429 vers->v_n = 1 ; /* one version is enough .. */
1430 vers->v_index = 1 ;
1431 vers->v_version[0] = SMT_VID_2 ;
1432 vers->v_pad2 = 0 ;
1433 }
1434
1435 #ifdef SMT6_10
1436 /*
1437 * fill frame status capabilities
1438 */
1439 /*
1440 * note: this para 200B is NOT in swap table, because it's also set in
1441 * PMF add_para
1442 */
smt_fill_fsc(struct s_smc * smc,struct smt_p_fsc * fsc)1443 static void smt_fill_fsc(struct s_smc *smc, struct smt_p_fsc *fsc)
1444 {
1445 SK_UNUSED(smc) ;
1446 SMTSETPARA(fsc,SMT_P_FSC) ;
1447 fsc->fsc_pad0 = 0 ;
1448 fsc->fsc_mac_index = INDEX_MAC ; /* this is MIB ; MIB is NOT
1449 * mac_index ()i !
1450 */
1451 fsc->fsc_pad1 = 0 ;
1452 fsc->fsc_value = FSC_TYPE0 ; /* "normal" node */
1453 #ifdef LITTLE_ENDIAN
1454 fsc->fsc_mac_index = smt_swap_short(INDEX_MAC) ;
1455 fsc->fsc_value = smt_swap_short(FSC_TYPE0) ;
1456 #endif
1457 }
1458 #endif
1459
1460 /*
1461 * fill mac counter field
1462 */
smt_fill_mac_counter(struct s_smc * smc,struct smt_p_mac_counter * mc)1463 static void smt_fill_mac_counter(struct s_smc *smc, struct smt_p_mac_counter *mc)
1464 {
1465 SMTSETPARA(mc,SMT_P_MAC_COUNTER) ;
1466 mc->mc_mib_index = INDEX_MAC ;
1467 mc->mc_index = mac_index(smc,1) ;
1468 mc->mc_receive_ct = smc->mib.m[MAC0].fddiMACCopied_Ct ;
1469 mc->mc_transmit_ct = smc->mib.m[MAC0].fddiMACTransmit_Ct ;
1470 }
1471
1472 /*
1473 * fill mac frame not copied counter
1474 */
smt_fill_mac_fnc(struct s_smc * smc,struct smt_p_mac_fnc * fnc)1475 static void smt_fill_mac_fnc(struct s_smc *smc, struct smt_p_mac_fnc *fnc)
1476 {
1477 SMTSETPARA(fnc,SMT_P_MAC_FNC) ;
1478 fnc->nc_mib_index = INDEX_MAC ;
1479 fnc->nc_index = mac_index(smc,1) ;
1480 fnc->nc_counter = smc->mib.m[MAC0].fddiMACNotCopied_Ct ;
1481 }
1482
1483
1484 /*
1485 * fill manufacturer field
1486 */
smt_fill_manufacturer(struct s_smc * smc,struct smp_p_manufacturer * man)1487 static void smt_fill_manufacturer(struct s_smc *smc,
1488 struct smp_p_manufacturer *man)
1489 {
1490 SMTSETPARA(man,SMT_P_MANUFACTURER) ;
1491 memcpy((char *) man->mf_data,
1492 (char *) smc->mib.fddiSMTManufacturerData,
1493 sizeof(man->mf_data)) ;
1494 }
1495
1496 /*
1497 * fill user field
1498 */
smt_fill_user(struct s_smc * smc,struct smp_p_user * user)1499 static void smt_fill_user(struct s_smc *smc, struct smp_p_user *user)
1500 {
1501 SMTSETPARA(user,SMT_P_USER) ;
1502 memcpy((char *) user->us_data,
1503 (char *) smc->mib.fddiSMTUserData,
1504 sizeof(user->us_data)) ;
1505 }
1506
1507 /*
1508 * fill set count
1509 */
smt_fill_setcount(struct s_smc * smc,struct smt_p_setcount * setcount)1510 static void smt_fill_setcount(struct s_smc *smc, struct smt_p_setcount *setcount)
1511 {
1512 SK_UNUSED(smc) ;
1513 SMTSETPARA(setcount,SMT_P_SETCOUNT) ;
1514 setcount->count = smc->mib.fddiSMTSetCount.count ;
1515 memcpy((char *)setcount->timestamp,
1516 (char *)smc->mib.fddiSMTSetCount.timestamp,8) ;
1517 }
1518
1519 /*
1520 * fill echo data
1521 */
smt_fill_echo(struct s_smc * smc,struct smt_p_echo * echo,u_long seed,int len)1522 static void smt_fill_echo(struct s_smc *smc, struct smt_p_echo *echo, u_long seed,
1523 int len)
1524 {
1525 u_char *p ;
1526
1527 SK_UNUSED(smc) ;
1528 SMTSETPARA(echo,SMT_P_ECHODATA) ;
1529 echo->para.p_len = len ;
1530 for (p = echo->ec_data ; len ; len--) {
1531 *p++ = (u_char) seed ;
1532 seed += 13 ;
1533 }
1534 }
1535
1536 /*
1537 * clear DNA and UNA
1538 * called from CFM if configuration changes
1539 */
smt_clear_una_dna(struct s_smc * smc)1540 static void smt_clear_una_dna(struct s_smc *smc)
1541 {
1542 smc->mib.m[MAC0].fddiMACUpstreamNbr = SMT_Unknown ;
1543 smc->mib.m[MAC0].fddiMACDownstreamNbr = SMT_Unknown ;
1544 }
1545
smt_clear_old_una_dna(struct s_smc * smc)1546 static void smt_clear_old_una_dna(struct s_smc *smc)
1547 {
1548 smc->mib.m[MAC0].fddiMACOldUpstreamNbr = SMT_Unknown ;
1549 smc->mib.m[MAC0].fddiMACOldDownstreamNbr = SMT_Unknown ;
1550 }
1551
smt_get_tid(struct s_smc * smc)1552 u_long smt_get_tid(struct s_smc *smc)
1553 {
1554 u_long tid ;
1555 while ((tid = ++(smc->sm.smt_tid) ^ SMT_TID_MAGIC) == 0)
1556 ;
1557 return tid & 0x3fffffffL;
1558 }
1559
1560 #ifdef LITTLE_ENDIAN
1561 /*
1562 * table of parameter lengths
1563 */
1564 static const struct smt_pdef {
1565 int ptype ;
1566 int plen ;
1567 const char *pswap ;
1568 } smt_pdef[] = {
1569 { SMT_P_UNA, sizeof(struct smt_p_una) ,
1570 SWAP_SMT_P_UNA } ,
1571 { SMT_P_SDE, sizeof(struct smt_p_sde) ,
1572 SWAP_SMT_P_SDE } ,
1573 { SMT_P_STATE, sizeof(struct smt_p_state) ,
1574 SWAP_SMT_P_STATE } ,
1575 { SMT_P_TIMESTAMP,sizeof(struct smt_p_timestamp) ,
1576 SWAP_SMT_P_TIMESTAMP } ,
1577 { SMT_P_POLICY, sizeof(struct smt_p_policy) ,
1578 SWAP_SMT_P_POLICY } ,
1579 { SMT_P_LATENCY, sizeof(struct smt_p_latency) ,
1580 SWAP_SMT_P_LATENCY } ,
1581 { SMT_P_NEIGHBORS,sizeof(struct smt_p_neighbor) ,
1582 SWAP_SMT_P_NEIGHBORS } ,
1583 { SMT_P_PATH, sizeof(struct smt_p_path) ,
1584 SWAP_SMT_P_PATH } ,
1585 { SMT_P_MAC_STATUS,sizeof(struct smt_p_mac_status) ,
1586 SWAP_SMT_P_MAC_STATUS } ,
1587 { SMT_P_LEM, sizeof(struct smt_p_lem) ,
1588 SWAP_SMT_P_LEM } ,
1589 { SMT_P_MAC_COUNTER,sizeof(struct smt_p_mac_counter) ,
1590 SWAP_SMT_P_MAC_COUNTER } ,
1591 { SMT_P_MAC_FNC,sizeof(struct smt_p_mac_fnc) ,
1592 SWAP_SMT_P_MAC_FNC } ,
1593 { SMT_P_PRIORITY,sizeof(struct smt_p_priority) ,
1594 SWAP_SMT_P_PRIORITY } ,
1595 { SMT_P_EB,sizeof(struct smt_p_eb) ,
1596 SWAP_SMT_P_EB } ,
1597 { SMT_P_MANUFACTURER,sizeof(struct smp_p_manufacturer) ,
1598 SWAP_SMT_P_MANUFACTURER } ,
1599 { SMT_P_REASON, sizeof(struct smt_p_reason) ,
1600 SWAP_SMT_P_REASON } ,
1601 { SMT_P_REFUSED, sizeof(struct smt_p_refused) ,
1602 SWAP_SMT_P_REFUSED } ,
1603 { SMT_P_VERSION, sizeof(struct smt_p_version) ,
1604 SWAP_SMT_P_VERSION } ,
1605 #ifdef ESS
1606 { SMT_P0015, sizeof(struct smt_p_0015) , SWAP_SMT_P0015 } ,
1607 { SMT_P0016, sizeof(struct smt_p_0016) , SWAP_SMT_P0016 } ,
1608 { SMT_P0017, sizeof(struct smt_p_0017) , SWAP_SMT_P0017 } ,
1609 { SMT_P0018, sizeof(struct smt_p_0018) , SWAP_SMT_P0018 } ,
1610 { SMT_P0019, sizeof(struct smt_p_0019) , SWAP_SMT_P0019 } ,
1611 { SMT_P001A, sizeof(struct smt_p_001a) , SWAP_SMT_P001A } ,
1612 { SMT_P001B, sizeof(struct smt_p_001b) , SWAP_SMT_P001B } ,
1613 { SMT_P001C, sizeof(struct smt_p_001c) , SWAP_SMT_P001C } ,
1614 { SMT_P001D, sizeof(struct smt_p_001d) , SWAP_SMT_P001D } ,
1615 #endif
1616 #if 0
1617 { SMT_P_FSC, sizeof(struct smt_p_fsc) ,
1618 SWAP_SMT_P_FSC } ,
1619 #endif
1620
1621 { SMT_P_SETCOUNT,0, SWAP_SMT_P_SETCOUNT } ,
1622 { SMT_P1048, 0, SWAP_SMT_P1048 } ,
1623 { SMT_P208C, 0, SWAP_SMT_P208C } ,
1624 { SMT_P208D, 0, SWAP_SMT_P208D } ,
1625 { SMT_P208E, 0, SWAP_SMT_P208E } ,
1626 { SMT_P208F, 0, SWAP_SMT_P208F } ,
1627 { SMT_P2090, 0, SWAP_SMT_P2090 } ,
1628 #ifdef ESS
1629 { SMT_P320B, sizeof(struct smt_p_320b) , SWAP_SMT_P320B } ,
1630 { SMT_P320F, sizeof(struct smt_p_320f) , SWAP_SMT_P320F } ,
1631 { SMT_P3210, sizeof(struct smt_p_3210) , SWAP_SMT_P3210 } ,
1632 #endif
1633 { SMT_P4050, 0, SWAP_SMT_P4050 } ,
1634 { SMT_P4051, 0, SWAP_SMT_P4051 } ,
1635 { SMT_P4052, 0, SWAP_SMT_P4052 } ,
1636 { SMT_P4053, 0, SWAP_SMT_P4053 } ,
1637 } ;
1638
1639 #define N_SMT_PLEN ARRAY_SIZE(smt_pdef)
1640 #endif
1641
smt_check_para(struct s_smc * smc,struct smt_header * sm,const u_short list[])1642 int smt_check_para(struct s_smc *smc, struct smt_header *sm,
1643 const u_short list[])
1644 {
1645 const u_short *p = list ;
1646 while (*p) {
1647 if (!sm_to_para(smc,sm,(int) *p)) {
1648 DB_SMT("SMT: smt_check_para - missing para %hx", *p);
1649 return -1;
1650 }
1651 p++ ;
1652 }
1653 return 0;
1654 }
1655
sm_to_para(struct s_smc * smc,struct smt_header * sm,int para)1656 void *sm_to_para(struct s_smc *smc, struct smt_header *sm, int para)
1657 {
1658 char *p ;
1659 int len ;
1660 int plen ;
1661 void *found = NULL;
1662
1663 SK_UNUSED(smc) ;
1664
1665 len = sm->smt_len ;
1666 p = (char *)(sm+1) ; /* pointer to info */
1667 while (len > 0 ) {
1668 if (((struct smt_para *)p)->p_type == para)
1669 found = (void *) p ;
1670 plen = ((struct smt_para *)p)->p_len + PARA_LEN ;
1671 p += plen ;
1672 len -= plen ;
1673 if (len < 0) {
1674 DB_SMT("SMT : sm_to_para - length error %d", plen);
1675 return NULL;
1676 }
1677 if ((plen & 3) && (para != SMT_P_ECHODATA)) {
1678 DB_SMT("SMT : sm_to_para - odd length %d", plen);
1679 return NULL;
1680 }
1681 if (found)
1682 return found;
1683 }
1684 return NULL;
1685 }
1686
1687 #if 0
1688 /*
1689 * send ANTC data test frame
1690 */
1691 void fddi_send_antc(struct s_smc *smc, struct fddi_addr *dest)
1692 {
1693 SK_UNUSED(smc) ;
1694 SK_UNUSED(dest) ;
1695 #if 0
1696 SMbuf *mb ;
1697 struct smt_header *smt ;
1698 int i ;
1699 char *p ;
1700
1701 mb = smt_get_mbuf() ;
1702 mb->sm_len = 3000+12 ;
1703 p = smtod(mb, char *) + 12 ;
1704 for (i = 0 ; i < 3000 ; i++)
1705 *p++ = 1 << (i&7) ;
1706
1707 smt = smtod(mb, struct smt_header *) ;
1708 smt->smt_dest = *dest ;
1709 smt->smt_source = smc->mib.m[MAC0].fddiMACSMTAddress ;
1710 smt_send_mbuf(smc,mb,FC_ASYNC_LLC) ;
1711 #endif
1712 }
1713 #endif
1714
1715 /*
1716 * return static mac index
1717 */
mac_index(struct s_smc * smc,int mac)1718 static int mac_index(struct s_smc *smc, int mac)
1719 {
1720 SK_UNUSED(mac) ;
1721 #ifdef CONCENTRATOR
1722 SK_UNUSED(smc) ;
1723 return NUMPHYS + 1;
1724 #else
1725 return (smc->s.sas == SMT_SAS) ? 2 : 3;
1726 #endif
1727 }
1728
1729 /*
1730 * return static phy index
1731 */
phy_index(struct s_smc * smc,int phy)1732 static int phy_index(struct s_smc *smc, int phy)
1733 {
1734 SK_UNUSED(smc) ;
1735 return phy + 1;
1736 }
1737
1738 /*
1739 * return dynamic mac connection resource index
1740 */
mac_con_resource_index(struct s_smc * smc,int mac)1741 static int mac_con_resource_index(struct s_smc *smc, int mac)
1742 {
1743 #ifdef CONCENTRATOR
1744 SK_UNUSED(smc) ;
1745 SK_UNUSED(mac) ;
1746 return entity_to_index(smc, cem_get_downstream(smc, ENTITY_MAC));
1747 #else
1748 SK_UNUSED(mac) ;
1749 switch (smc->mib.fddiSMTCF_State) {
1750 case SC9_C_WRAP_A :
1751 case SC5_THRU_B :
1752 case SC11_C_WRAP_S :
1753 return 1;
1754 case SC10_C_WRAP_B :
1755 case SC4_THRU_A :
1756 return 2;
1757 }
1758 return smc->s.sas == SMT_SAS ? 2 : 3;
1759 #endif
1760 }
1761
1762 /*
1763 * return dynamic phy connection resource index
1764 */
phy_con_resource_index(struct s_smc * smc,int phy)1765 static int phy_con_resource_index(struct s_smc *smc, int phy)
1766 {
1767 #ifdef CONCENTRATOR
1768 return entity_to_index(smc, cem_get_downstream(smc, ENTITY_PHY(phy))) ;
1769 #else
1770 switch (smc->mib.fddiSMTCF_State) {
1771 case SC9_C_WRAP_A :
1772 return phy == PA ? 3 : 2;
1773 case SC10_C_WRAP_B :
1774 return phy == PA ? 1 : 3;
1775 case SC4_THRU_A :
1776 return phy == PA ? 3 : 1;
1777 case SC5_THRU_B :
1778 return phy == PA ? 2 : 3;
1779 case SC11_C_WRAP_S :
1780 return 2;
1781 }
1782 return phy;
1783 #endif
1784 }
1785
1786 #ifdef CONCENTRATOR
entity_to_index(struct s_smc * smc,int e)1787 static int entity_to_index(struct s_smc *smc, int e)
1788 {
1789 if (e == ENTITY_MAC)
1790 return mac_index(smc, 1);
1791 else
1792 return phy_index(smc, e - ENTITY_PHY(0));
1793 }
1794 #endif
1795
1796 #ifdef LITTLE_ENDIAN
smt_swap_short(u_short s)1797 static int smt_swap_short(u_short s)
1798 {
1799 return ((s>>8)&0xff) | ((s&0xff)<<8);
1800 }
1801
smt_swap_para(struct smt_header * sm,int len,int direction)1802 void smt_swap_para(struct smt_header *sm, int len, int direction)
1803 /* int direction; 0 encode 1 decode */
1804 {
1805 struct smt_para *pa ;
1806 const struct smt_pdef *pd ;
1807 char *p ;
1808 int plen ;
1809 int type ;
1810 int i ;
1811
1812 /* printf("smt_swap_para sm %x len %d dir %d\n",
1813 sm,len,direction) ;
1814 */
1815 smt_string_swap((char *)sm,SWAP_SMTHEADER,len) ;
1816
1817 /* swap args */
1818 len -= sizeof(struct smt_header) ;
1819
1820 p = (char *) (sm + 1) ;
1821 while (len > 0) {
1822 pa = (struct smt_para *) p ;
1823 plen = pa->p_len ;
1824 type = pa->p_type ;
1825 pa->p_type = smt_swap_short(pa->p_type) ;
1826 pa->p_len = smt_swap_short(pa->p_len) ;
1827 if (direction) {
1828 plen = pa->p_len ;
1829 type = pa->p_type ;
1830 }
1831 /*
1832 * note: paras can have 0 length !
1833 */
1834 if (plen < 0)
1835 break ;
1836 plen += PARA_LEN ;
1837 for (i = N_SMT_PLEN, pd = smt_pdef; i ; i--,pd++) {
1838 if (pd->ptype == type)
1839 break ;
1840 }
1841 if (i && pd->pswap) {
1842 smt_string_swap(p+PARA_LEN,pd->pswap,len) ;
1843 }
1844 len -= plen ;
1845 p += plen ;
1846 }
1847 }
1848
1849
smt_string_swap(char * data,const char * format,int len)1850 static void smt_string_swap(char *data, const char *format, int len)
1851 {
1852 const char *open_paren = NULL ;
1853
1854 while (len > 0 && *format) {
1855 switch (*format) {
1856 case '[' :
1857 open_paren = format ;
1858 break ;
1859 case ']' :
1860 format = open_paren ;
1861 break ;
1862 case '1' :
1863 case '2' :
1864 case '3' :
1865 case '4' :
1866 case '5' :
1867 case '6' :
1868 case '7' :
1869 case '8' :
1870 case '9' :
1871 data += *format - '0' ;
1872 len -= *format - '0' ;
1873 break ;
1874 case 'c':
1875 data++ ;
1876 len-- ;
1877 break ;
1878 case 's' :
1879 swap(data[0], data[1]) ;
1880 data += 2 ;
1881 len -= 2 ;
1882 break ;
1883 case 'l' :
1884 swap(data[0], data[3]) ;
1885 swap(data[1], data[2]) ;
1886 data += 4 ;
1887 len -= 4 ;
1888 break ;
1889 }
1890 format++ ;
1891 }
1892 }
1893 #else
smt_swap_para(struct smt_header * sm,int len,int direction)1894 void smt_swap_para(struct smt_header *sm, int len, int direction)
1895 /* int direction; 0 encode 1 decode */
1896 {
1897 SK_UNUSED(sm) ;
1898 SK_UNUSED(len) ;
1899 SK_UNUSED(direction) ;
1900 }
1901 #endif
1902
1903 /*
1904 * PMF actions
1905 */
smt_action(struct s_smc * smc,int class,int code,int index)1906 int smt_action(struct s_smc *smc, int class, int code, int index)
1907 {
1908 int event ;
1909 int port ;
1910 DB_SMT("SMT: action %d code %d", class, code);
1911 switch(class) {
1912 case SMT_STATION_ACTION :
1913 switch(code) {
1914 case SMT_STATION_ACTION_CONNECT :
1915 smc->mib.fddiSMTRemoteDisconnectFlag = FALSE ;
1916 queue_event(smc,EVENT_ECM,EC_CONNECT) ;
1917 break ;
1918 case SMT_STATION_ACTION_DISCONNECT :
1919 queue_event(smc,EVENT_ECM,EC_DISCONNECT) ;
1920 smc->mib.fddiSMTRemoteDisconnectFlag = TRUE ;
1921 RS_SET(smc,RS_DISCONNECT) ;
1922 AIX_EVENT(smc, (u_long) FDDI_RING_STATUS, (u_long)
1923 FDDI_SMT_EVENT, (u_long) FDDI_REMOTE_DISCONNECT,
1924 smt_get_event_word(smc));
1925 break ;
1926 case SMT_STATION_ACTION_PATHTEST :
1927 AIX_EVENT(smc, (u_long) FDDI_RING_STATUS, (u_long)
1928 FDDI_SMT_EVENT, (u_long) FDDI_PATH_TEST,
1929 smt_get_event_word(smc));
1930 break ;
1931 case SMT_STATION_ACTION_SELFTEST :
1932 AIX_EVENT(smc, (u_long) FDDI_RING_STATUS, (u_long)
1933 FDDI_SMT_EVENT, (u_long) FDDI_REMOTE_SELF_TEST,
1934 smt_get_event_word(smc));
1935 break ;
1936 case SMT_STATION_ACTION_DISABLE_A :
1937 if (smc->y[PA].pc_mode == PM_PEER) {
1938 RS_SET(smc,RS_EVENT) ;
1939 queue_event(smc,EVENT_PCM+PA,PC_DISABLE) ;
1940 }
1941 break ;
1942 case SMT_STATION_ACTION_DISABLE_B :
1943 if (smc->y[PB].pc_mode == PM_PEER) {
1944 RS_SET(smc,RS_EVENT) ;
1945 queue_event(smc,EVENT_PCM+PB,PC_DISABLE) ;
1946 }
1947 break ;
1948 case SMT_STATION_ACTION_DISABLE_M :
1949 for (port = 0 ; port < NUMPHYS ; port++) {
1950 if (smc->mib.p[port].fddiPORTMy_Type != TM)
1951 continue ;
1952 RS_SET(smc,RS_EVENT) ;
1953 queue_event(smc,EVENT_PCM+port,PC_DISABLE) ;
1954 }
1955 break ;
1956 default :
1957 return 1;
1958 }
1959 break ;
1960 case SMT_PORT_ACTION :
1961 switch(code) {
1962 case SMT_PORT_ACTION_ENABLE :
1963 event = PC_ENABLE ;
1964 break ;
1965 case SMT_PORT_ACTION_DISABLE :
1966 event = PC_DISABLE ;
1967 break ;
1968 case SMT_PORT_ACTION_MAINT :
1969 event = PC_MAINT ;
1970 break ;
1971 case SMT_PORT_ACTION_START :
1972 event = PC_START ;
1973 break ;
1974 case SMT_PORT_ACTION_STOP :
1975 event = PC_STOP ;
1976 break ;
1977 default :
1978 return 1;
1979 }
1980 queue_event(smc,EVENT_PCM+index,event) ;
1981 break ;
1982 default :
1983 return 1;
1984 }
1985 return 0;
1986 }
1987
1988 /*
1989 * canonical conversion of <len> bytes beginning form *data
1990 */
1991 #ifdef USE_CAN_ADDR
hwm_conv_can(struct s_smc * smc,char * data,int len)1992 static void hwm_conv_can(struct s_smc *smc, char *data, int len)
1993 {
1994 int i ;
1995
1996 SK_UNUSED(smc) ;
1997
1998 for (i = len; i ; i--, data++)
1999 *data = bitrev8(*data);
2000 }
2001 #endif
2002
2003 #endif /* no SLIM_SMT */
2004
2005