Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
smt.c
Go to the documentation of this file.
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 #include "h/types.h"
18 #include "h/fddi.h"
19 #include "h/smc.h"
20 #include "h/smt_p.h"
21 #include <linux/bitrev.h>
22 #include <linux/kernel.h>
23 
24 #define KERNEL
25 #include "h/smtstate.h"
26 
27 #ifndef lint
28 static const char ID_sccs[] = "@(#)smt.c 2.43 98/11/23 (C) SK " ;
29 #endif
30 
31 /*
32  * FC in SMbuf
33  */
34 #define m_fc(mb) ((mb)->sm_data[0])
35 
36 #define SMT_TID_MAGIC 0x1f0a7b3c
37 
38 #ifdef DEBUG
39 static const char *const smt_type_name[] = {
40  "SMT_00??", "SMT_INFO", "SMT_02??", "SMT_03??",
41  "SMT_04??", "SMT_05??", "SMT_06??", "SMT_07??",
42  "SMT_08??", "SMT_09??", "SMT_0A??", "SMT_0B??",
43  "SMT_0C??", "SMT_0D??", "SMT_0E??", "SMT_NSA"
44 } ;
45 
46 static const char *const smt_class_name[] = {
47  "UNKNOWN","NIF","SIF_CONFIG","SIF_OPER","ECF","RAF","RDF",
48  "SRF","PMF_GET","PMF_SET","ESF"
49 } ;
50 #endif
51 #define LAST_CLASS (SMT_PMF_SET)
52 
53 static const struct fddi_addr SMT_Unknown = {
54  { 0,0,0x1f,0,0,0 }
55 } ;
56 
57 /*
58  * function prototypes
59  */
60 #ifdef LITTLE_ENDIAN
61 static int smt_swap_short(u_short s);
62 #endif
63 static int mac_index(struct s_smc *smc, int mac);
64 static int phy_index(struct s_smc *smc, int phy);
65 static int mac_con_resource_index(struct s_smc *smc, int mac);
66 static int phy_con_resource_index(struct s_smc *smc, int phy);
67 static void smt_send_rdf(struct s_smc *smc, SMbuf *rej, int fc, int reason,
68  int local);
69 static void smt_send_nif(struct s_smc *smc, const struct fddi_addr *dest,
70  int fc, u_long tid, int type, int local);
71 static void smt_send_ecf(struct s_smc *smc, struct fddi_addr *dest, int fc,
72  u_long tid, int type, int len);
73 static void smt_echo_test(struct s_smc *smc, int dna);
74 static void smt_send_sif_config(struct s_smc *smc, struct fddi_addr *dest,
75  u_long tid, int local);
76 static void smt_send_sif_operation(struct s_smc *smc, struct fddi_addr *dest,
77  u_long tid, int local);
78 #ifdef LITTLE_ENDIAN
79 static void smt_string_swap(char *data, const char *format, int len);
80 #endif
81 static void smt_add_frame_len(SMbuf *mb, int len);
82 static void smt_fill_una(struct s_smc *smc, struct smt_p_una *una);
83 static void smt_fill_sde(struct s_smc *smc, struct smt_p_sde *sde);
84 static void smt_fill_state(struct s_smc *smc, struct smt_p_state *state);
85 static void smt_fill_timestamp(struct s_smc *smc, struct smt_p_timestamp *ts);
86 static void smt_fill_policy(struct s_smc *smc, struct smt_p_policy *policy);
87 static void smt_fill_latency(struct s_smc *smc, struct smt_p_latency *latency);
88 static void smt_fill_neighbor(struct s_smc *smc, struct smt_p_neighbor *neighbor);
89 static int smt_fill_path(struct s_smc *smc, struct smt_p_path *path);
90 static void smt_fill_mac_status(struct s_smc *smc, struct smt_p_mac_status *st);
91 static void smt_fill_lem(struct s_smc *smc, struct smt_p_lem *lem, int phy);
92 static void smt_fill_version(struct s_smc *smc, struct smt_p_version *vers);
93 static void smt_fill_fsc(struct s_smc *smc, struct smt_p_fsc *fsc);
94 static void smt_fill_mac_counter(struct s_smc *smc, struct smt_p_mac_counter *mc);
95 static void smt_fill_mac_fnc(struct s_smc *smc, struct smt_p_mac_fnc *fnc);
96 static void smt_fill_manufacturer(struct s_smc *smc,
97  struct smp_p_manufacturer *man);
98 static void smt_fill_user(struct s_smc *smc, struct smp_p_user *user);
99 static void smt_fill_setcount(struct s_smc *smc, struct smt_p_setcount *setcount);
100 static void smt_fill_echo(struct s_smc *smc, struct smt_p_echo *echo, u_long seed,
101  int len);
102 
103 static void smt_clear_una_dna(struct s_smc *smc);
104 static void smt_clear_old_una_dna(struct s_smc *smc);
105 #ifdef CONCENTRATOR
106 static int entity_to_index(void);
107 #endif
108 static void update_dac(struct s_smc *smc, int report);
109 static int div_ratio(u_long upper, u_long lower);
110 #ifdef USE_CAN_ADDR
111 static void hwm_conv_can(struct s_smc *smc, char *data, int len);
112 #else
113 #define hwm_conv_can(smc,data,len)
114 #endif
115 
116 
117 static inline int is_my_addr(const struct s_smc *smc,
118  const struct fddi_addr *addr)
119 {
120  return(*(short *)(&addr->a[0]) ==
121  *(short *)(&smc->mib.m[MAC0].fddiMACSMTAddress.a[0])
122  && *(short *)(&addr->a[2]) ==
123  *(short *)(&smc->mib.m[MAC0].fddiMACSMTAddress.a[2])
124  && *(short *)(&addr->a[4]) ==
125  *(short *)(&smc->mib.m[MAC0].fddiMACSMTAddress.a[4])) ;
126 }
127 
128 static inline int is_broadcast(const struct fddi_addr *addr)
129 {
130  return *(u_short *)(&addr->a[0]) == 0xffff &&
131  *(u_short *)(&addr->a[2]) == 0xffff &&
132  *(u_short *)(&addr->a[4]) == 0xffff;
133 }
134 
135 static inline int is_individual(const struct fddi_addr *addr)
136 {
137  return !(addr->a[0] & GROUP_ADDR);
138 }
139 
140 static inline int is_equal(const struct fddi_addr *addr1,
141  const struct fddi_addr *addr2)
142 {
143  return *(u_short *)(&addr1->a[0]) == *(u_short *)(&addr2->a[0]) &&
144  *(u_short *)(&addr1->a[2]) == *(u_short *)(&addr2->a[2]) &&
145  *(u_short *)(&addr1->a[4]) == *(u_short *)(&addr2->a[4]);
146 }
147 
148 /*
149  * list of mandatory paras in frames
150  */
151 static const u_short plist_nif[] = { SMT_P_UNA,SMT_P_SDE,SMT_P_STATE,0 } ;
152 
153 /*
154  * init SMT agent
155  */
156 void smt_agent_init(struct s_smc *smc)
157 {
158  int i ;
159 
160  /*
161  * get MAC address
162  */
163  smc->mib.m[MAC0].fddiMACSMTAddress = smc->hw.fddi_home_addr ;
164 
165  /*
166  * get OUI address from driver (bia == built-in-address)
167  */
168  smc->mib.fddiSMTStationId.sid_oem[0] = 0 ;
169  smc->mib.fddiSMTStationId.sid_oem[1] = 0 ;
170  driver_get_bia(smc,&smc->mib.fddiSMTStationId.sid_node) ;
171  for (i = 0 ; i < 6 ; i ++) {
172  smc->mib.fddiSMTStationId.sid_node.a[i] =
173  bitrev8(smc->mib.fddiSMTStationId.sid_node.a[i]);
174  }
175  smc->mib.fddiSMTManufacturerData[0] =
176  smc->mib.fddiSMTStationId.sid_node.a[0] ;
177  smc->mib.fddiSMTManufacturerData[1] =
178  smc->mib.fddiSMTStationId.sid_node.a[1] ;
179  smc->mib.fddiSMTManufacturerData[2] =
180  smc->mib.fddiSMTStationId.sid_node.a[2] ;
181  smc->sm.smt_tid = 0 ;
182  smc->mib.m[MAC0].fddiMACDupAddressTest = DA_NONE ;
183  smc->mib.m[MAC0].fddiMACUNDA_Flag = FALSE ;
184 #ifndef SLIM_SMT
185  smt_clear_una_dna(smc) ;
186  smt_clear_old_una_dna(smc) ;
187 #endif
188  for (i = 0 ; i < SMT_MAX_TEST ; i++)
189  smc->sm.pend[i] = 0 ;
190  smc->sm.please_reconnect = 0 ;
191  smc->sm.uniq_ticks = 0 ;
192 }
193 
194 /*
195  * SMT task
196  * forever
197  * delay 30 seconds
198  * send NIF
199  * check tvu & tvd
200  * end
201  */
202 void smt_agent_task(struct s_smc *smc)
203 {
204  smt_timer_start(smc,&smc->sm.smt_timer, (u_long)1000000L,
205  EV_TOKEN(EVENT_SMT,SM_TIMER)) ;
206  DB_SMT("SMT agent task\n",0,0) ;
207 }
208 
209 #ifndef SMT_REAL_TOKEN_CT
210 void smt_emulate_token_ct(struct s_smc *smc, int mac_index)
211 {
212  u_long count;
213  u_long time;
214 
215 
216  time = smt_get_time();
217  count = ((time - smc->sm.last_tok_time[mac_index]) *
218  100)/TICKS_PER_SECOND;
219 
220  /*
221  * Only when ring is up we will have a token count. The
222  * flag is unfortunately a single instance value. This
223  * doesn't matter now, because we currently have only
224  * one MAC instance.
225  */
226  if (smc->hw.mac_ring_is_up){
227  smc->mib.m[mac_index].fddiMACToken_Ct += count;
228  }
229 
230  /* Remember current time */
231  smc->sm.last_tok_time[mac_index] = time;
232 
233 }
234 #endif
235 
236 /*ARGSUSED1*/
237 void smt_event(struct s_smc *smc, int event)
238 {
239  u_long time ;
240 #ifndef SMT_REAL_TOKEN_CT
241  int i ;
242 #endif
243 
244 
245  if (smc->sm.please_reconnect) {
246  smc->sm.please_reconnect -- ;
247  if (smc->sm.please_reconnect == 0) {
248  /* Counted down */
249  queue_event(smc,EVENT_ECM,EC_CONNECT) ;
250  }
251  }
252 
253  if (event == SM_FAST)
254  return ;
255 
256  /*
257  * timer for periodic cleanup in driver
258  * reset and start the watchdog (FM2)
259  * ESS timer
260  * SBA timer
261  */
262  smt_timer_poll(smc) ;
263  smt_start_watchdog(smc) ;
264 #ifndef SLIM_SMT
265 #ifndef BOOT
266 #ifdef ESS
267  ess_timer_poll(smc) ;
268 #endif
269 #endif
270 #ifdef SBA
271  sba_timer_poll(smc) ;
272 #endif
273 
274  smt_srf_event(smc,0,0,0) ;
275 
276 #endif /* no SLIM_SMT */
277 
278  time = smt_get_time() ;
279 
280  if (time - smc->sm.smt_last_lem >= TICKS_PER_SECOND*8) {
281  /*
282  * Use 8 sec. for the time intervall, it simplifies the
283  * LER estimation.
284  */
285  struct fddi_mib_m *mib ;
286  u_long upper ;
287  u_long lower ;
288  int cond ;
289  int port;
290  struct s_phy *phy ;
291  /*
292  * calculate LEM bit error rate
293  */
294  sm_lem_evaluate(smc) ;
295  smc->sm.smt_last_lem = time ;
296 
297  /*
298  * check conditions
299  */
300 #ifndef SLIM_SMT
301  mac_update_counter(smc) ;
302  mib = smc->mib.m ;
303  upper =
304  (mib->fddiMACLost_Ct - mib->fddiMACOld_Lost_Ct) +
305  (mib->fddiMACError_Ct - mib->fddiMACOld_Error_Ct) ;
306  lower =
307  (mib->fddiMACFrame_Ct - mib->fddiMACOld_Frame_Ct) +
308  (mib->fddiMACLost_Ct - mib->fddiMACOld_Lost_Ct) ;
309  mib->fddiMACFrameErrorRatio = div_ratio(upper,lower) ;
310 
311  cond =
312  ((!mib->fddiMACFrameErrorThreshold &&
313  mib->fddiMACError_Ct != mib->fddiMACOld_Error_Ct) ||
314  (mib->fddiMACFrameErrorRatio >
315  mib->fddiMACFrameErrorThreshold)) ;
316 
317  if (cond != mib->fddiMACFrameErrorFlag)
318  smt_srf_event(smc,SMT_COND_MAC_FRAME_ERROR,
319  INDEX_MAC,cond) ;
320 
321  upper =
322  (mib->fddiMACNotCopied_Ct - mib->fddiMACOld_NotCopied_Ct) ;
323  lower =
324  upper +
325  (mib->fddiMACCopied_Ct - mib->fddiMACOld_Copied_Ct) ;
326  mib->fddiMACNotCopiedRatio = div_ratio(upper,lower) ;
327 
328  cond =
329  ((!mib->fddiMACNotCopiedThreshold &&
330  mib->fddiMACNotCopied_Ct !=
331  mib->fddiMACOld_NotCopied_Ct)||
332  (mib->fddiMACNotCopiedRatio >
333  mib->fddiMACNotCopiedThreshold)) ;
334 
335  if (cond != mib->fddiMACNotCopiedFlag)
336  smt_srf_event(smc,SMT_COND_MAC_NOT_COPIED,
337  INDEX_MAC,cond) ;
338 
339  /*
340  * set old values
341  */
342  mib->fddiMACOld_Frame_Ct = mib->fddiMACFrame_Ct ;
343  mib->fddiMACOld_Copied_Ct = mib->fddiMACCopied_Ct ;
344  mib->fddiMACOld_Error_Ct = mib->fddiMACError_Ct ;
345  mib->fddiMACOld_Lost_Ct = mib->fddiMACLost_Ct ;
346  mib->fddiMACOld_NotCopied_Ct = mib->fddiMACNotCopied_Ct ;
347 
348  /*
349  * Check port EBError Condition
350  */
351  for (port = 0; port < NUMPHYS; port ++) {
352  phy = &smc->y[port] ;
353 
354  if (!phy->mib->fddiPORTHardwarePresent) {
355  continue;
356  }
357 
358  cond = (phy->mib->fddiPORTEBError_Ct -
359  phy->mib->fddiPORTOldEBError_Ct > 5) ;
360 
361  /* If ratio is more than 5 in 8 seconds
362  * Set the condition.
363  */
364  smt_srf_event(smc,SMT_COND_PORT_EB_ERROR,
365  (int) (INDEX_PORT+ phy->np) ,cond) ;
366 
367  /*
368  * set old values
369  */
370  phy->mib->fddiPORTOldEBError_Ct =
371  phy->mib->fddiPORTEBError_Ct ;
372  }
373 
374 #endif /* no SLIM_SMT */
375  }
376 
377 #ifndef SLIM_SMT
378 
379  if (time - smc->sm.smt_last_notify >= (u_long)
380  (smc->mib.fddiSMTTT_Notify * TICKS_PER_SECOND) ) {
381  /*
382  * we can either send an announcement or a request
383  * a request will trigger a reply so that we can update
384  * our dna
385  * note: same tid must be used until reply is received
386  */
387  if (!smc->sm.pend[SMT_TID_NIF])
388  smc->sm.pend[SMT_TID_NIF] = smt_get_tid(smc) ;
389  smt_send_nif(smc,&fddi_broadcast, FC_SMT_NSA,
390  smc->sm.pend[SMT_TID_NIF], SMT_REQUEST,0) ;
391  smc->sm.smt_last_notify = time ;
392  }
393 
394  /*
395  * check timer
396  */
397  if (smc->sm.smt_tvu &&
398  time - smc->sm.smt_tvu > 228*TICKS_PER_SECOND) {
399  DB_SMT("SMT : UNA expired\n",0,0) ;
400  smc->sm.smt_tvu = 0 ;
401 
402  if (!is_equal(&smc->mib.m[MAC0].fddiMACUpstreamNbr,
403  &SMT_Unknown)){
404  /* Do not update unknown address */
405  smc->mib.m[MAC0].fddiMACOldUpstreamNbr=
406  smc->mib.m[MAC0].fddiMACUpstreamNbr ;
407  }
408  smc->mib.m[MAC0].fddiMACUpstreamNbr = SMT_Unknown ;
409  smc->mib.m[MAC0].fddiMACUNDA_Flag = FALSE ;
410  /*
411  * Make sure the fddiMACUNDA_Flag = FALSE is
412  * included in the SRF so we don't generate
413  * a separate SRF for the deassertion of this
414  * condition
415  */
416  update_dac(smc,0) ;
417  smt_srf_event(smc, SMT_EVENT_MAC_NEIGHBOR_CHANGE,
418  INDEX_MAC,0) ;
419  }
420  if (smc->sm.smt_tvd &&
421  time - smc->sm.smt_tvd > 228*TICKS_PER_SECOND) {
422  DB_SMT("SMT : DNA expired\n",0,0) ;
423  smc->sm.smt_tvd = 0 ;
424  if (!is_equal(&smc->mib.m[MAC0].fddiMACDownstreamNbr,
425  &SMT_Unknown)){
426  /* Do not update unknown address */
427  smc->mib.m[MAC0].fddiMACOldDownstreamNbr=
428  smc->mib.m[MAC0].fddiMACDownstreamNbr ;
429  }
430  smc->mib.m[MAC0].fddiMACDownstreamNbr = SMT_Unknown ;
431  smt_srf_event(smc, SMT_EVENT_MAC_NEIGHBOR_CHANGE,
432  INDEX_MAC,0) ;
433  }
434 
435 #endif /* no SLIM_SMT */
436 
437 #ifndef SMT_REAL_TOKEN_CT
438  /*
439  * Token counter emulation section. If hardware supports the token
440  * count, the token counter will be updated in mac_update_counter.
441  */
442  for (i = MAC0; i < NUMMACS; i++ ){
443  if (time - smc->sm.last_tok_time[i] > 2*TICKS_PER_SECOND ){
444  smt_emulate_token_ct( smc, i );
445  }
446  }
447 #endif
448 
449  smt_timer_start(smc,&smc->sm.smt_timer, (u_long)1000000L,
450  EV_TOKEN(EVENT_SMT,SM_TIMER)) ;
451 }
452 
453 static int div_ratio(u_long upper, u_long lower)
454 {
455  if ((upper<<16L) < upper)
456  upper = 0xffff0000L ;
457  else
458  upper <<= 16L ;
459  if (!lower)
460  return 0;
461  return (int)(upper/lower) ;
462 }
463 
464 #ifndef SLIM_SMT
465 
466 /*
467  * receive packet handler
468  */
469 void smt_received_pack(struct s_smc *smc, SMbuf *mb, int fs)
470 /* int fs; frame status */
471 {
472  struct smt_header *sm ;
473  int local ;
474 
475  int illegal = 0 ;
476 
477  switch (m_fc(mb)) {
478  case FC_SMT_INFO :
479  case FC_SMT_LAN_LOC :
480  case FC_SMT_LOC :
481  case FC_SMT_NSA :
482  break ;
483  default :
484  smt_free_mbuf(smc,mb) ;
485  return ;
486  }
487 
488  smc->mib.m[MAC0].fddiMACSMTCopied_Ct++ ;
489  sm = smtod(mb,struct smt_header *) ;
490  local = ((fs & L_INDICATOR) != 0) ;
491  hwm_conv_can(smc,(char *)sm,12) ;
492 
493  /* check destination address */
494  if (is_individual(&sm->smt_dest) && !is_my_addr(smc,&sm->smt_dest)) {
495  smt_free_mbuf(smc,mb) ;
496  return ;
497  }
498 #if 0 /* for DUP recognition, do NOT filter them */
499  /* ignore loop back packets */
500  if (is_my_addr(smc,&sm->smt_source) && !local) {
501  smt_free_mbuf(smc,mb) ;
502  return ;
503  }
504 #endif
505 
506  smt_swap_para(sm,(int) mb->sm_len,1) ;
507  DB_SMT("SMT : received packet [%s] at 0x%x\n",
508  smt_type_name[m_fc(mb) & 0xf],sm) ;
509  DB_SMT("SMT : version %d, class %s\n",sm->smt_version,
510  smt_class_name[(sm->smt_class>LAST_CLASS)?0 : sm->smt_class]) ;
511 
512 #ifdef SBA
513  /*
514  * check if NSA frame
515  */
516  if (m_fc(mb) == FC_SMT_NSA && sm->smt_class == SMT_NIF &&
517  (sm->smt_type == SMT_ANNOUNCE || sm->smt_type == SMT_REQUEST)) {
518  smc->sba.sm = sm ;
519  sba(smc,NIF) ;
520  }
521 #endif
522 
523  /*
524  * ignore any packet with NSA and A-indicator set
525  */
526  if ( (fs & A_INDICATOR) && m_fc(mb) == FC_SMT_NSA) {
527  DB_SMT("SMT : ignoring NSA with A-indicator set from %s\n",
528  addr_to_string(&sm->smt_source),0) ;
529  smt_free_mbuf(smc,mb) ;
530  return ;
531  }
532 
533  /*
534  * ignore frames with illegal length
535  */
536  if (((sm->smt_class == SMT_ECF) && (sm->smt_len > SMT_MAX_ECHO_LEN)) ||
537  ((sm->smt_class != SMT_ECF) && (sm->smt_len > SMT_MAX_INFO_LEN))) {
538  smt_free_mbuf(smc,mb) ;
539  return ;
540  }
541 
542  /*
543  * check SMT version
544  */
545  switch (sm->smt_class) {
546  case SMT_NIF :
547  case SMT_SIF_CONFIG :
548  case SMT_SIF_OPER :
549  case SMT_ECF :
550  if (sm->smt_version != SMT_VID)
551  illegal = 1;
552  break ;
553  default :
554  if (sm->smt_version != SMT_VID_2)
555  illegal = 1;
556  break ;
557  }
558  if (illegal) {
559  DB_SMT("SMT : version = %d, dest = %s\n",
560  sm->smt_version,addr_to_string(&sm->smt_source)) ;
561  smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_VERSION,local) ;
562  smt_free_mbuf(smc,mb) ;
563  return ;
564  }
565  if ((sm->smt_len > mb->sm_len - sizeof(struct smt_header)) ||
566  ((sm->smt_len & 3) && (sm->smt_class != SMT_ECF))) {
567  DB_SMT("SMT: info length error, len = %d\n",sm->smt_len,0) ;
568  smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_LENGTH,local) ;
569  smt_free_mbuf(smc,mb) ;
570  return ;
571  }
572  switch (sm->smt_class) {
573  case SMT_NIF :
574  if (smt_check_para(smc,sm,plist_nif)) {
575  DB_SMT("SMT: NIF with para problem, ignoring\n",0,0) ;
576  break ;
577  }
578  switch (sm->smt_type) {
579  case SMT_ANNOUNCE :
580  case SMT_REQUEST :
581  if (!(fs & C_INDICATOR) && m_fc(mb) == FC_SMT_NSA
582  && is_broadcast(&sm->smt_dest)) {
583  struct smt_p_state *st ;
584 
585  /* set my UNA */
586  if (!is_equal(
587  &smc->mib.m[MAC0].fddiMACUpstreamNbr,
588  &sm->smt_source)) {
589  DB_SMT("SMT : updated my UNA = %s\n",
590  addr_to_string(&sm->smt_source),0) ;
591  if (!is_equal(&smc->mib.m[MAC0].
592  fddiMACUpstreamNbr,&SMT_Unknown)){
593  /* Do not update unknown address */
594  smc->mib.m[MAC0].fddiMACOldUpstreamNbr=
595  smc->mib.m[MAC0].fddiMACUpstreamNbr ;
596  }
597 
598  smc->mib.m[MAC0].fddiMACUpstreamNbr =
599  sm->smt_source ;
600  smt_srf_event(smc,
601  SMT_EVENT_MAC_NEIGHBOR_CHANGE,
602  INDEX_MAC,0) ;
603  smt_echo_test(smc,0) ;
604  }
605  smc->sm.smt_tvu = smt_get_time() ;
606  st = (struct smt_p_state *)
607  sm_to_para(smc,sm,SMT_P_STATE) ;
608  if (st) {
609  smc->mib.m[MAC0].fddiMACUNDA_Flag =
610  (st->st_dupl_addr & SMT_ST_MY_DUPA) ?
611  TRUE : FALSE ;
612  update_dac(smc,1) ;
613  }
614  }
615  if ((sm->smt_type == SMT_REQUEST) &&
616  is_individual(&sm->smt_source) &&
617  ((!(fs & A_INDICATOR) && m_fc(mb) == FC_SMT_NSA) ||
618  (m_fc(mb) != FC_SMT_NSA))) {
619  DB_SMT("SMT : replying to NIF request %s\n",
620  addr_to_string(&sm->smt_source),0) ;
621  smt_send_nif(smc,&sm->smt_source,
622  FC_SMT_INFO,
623  sm->smt_tid,
624  SMT_REPLY,local) ;
625  }
626  break ;
627  case SMT_REPLY :
628  DB_SMT("SMT : received NIF response from %s\n",
629  addr_to_string(&sm->smt_source),0) ;
630  if (fs & A_INDICATOR) {
631  smc->sm.pend[SMT_TID_NIF] = 0 ;
632  DB_SMT("SMT : duplicate address\n",0,0) ;
633  smc->mib.m[MAC0].fddiMACDupAddressTest =
634  DA_FAILED ;
635  smc->r.dup_addr_test = DA_FAILED ;
636  queue_event(smc,EVENT_RMT,RM_DUP_ADDR) ;
637  smc->mib.m[MAC0].fddiMACDA_Flag = TRUE ;
638  update_dac(smc,1) ;
639  break ;
640  }
641  if (sm->smt_tid == smc->sm.pend[SMT_TID_NIF]) {
642  smc->sm.pend[SMT_TID_NIF] = 0 ;
643  /* set my DNA */
644  if (!is_equal(
645  &smc->mib.m[MAC0].fddiMACDownstreamNbr,
646  &sm->smt_source)) {
647  DB_SMT("SMT : updated my DNA\n",0,0) ;
648  if (!is_equal(&smc->mib.m[MAC0].
649  fddiMACDownstreamNbr, &SMT_Unknown)){
650  /* Do not update unknown address */
651  smc->mib.m[MAC0].fddiMACOldDownstreamNbr =
652  smc->mib.m[MAC0].fddiMACDownstreamNbr ;
653  }
654 
655  smc->mib.m[MAC0].fddiMACDownstreamNbr =
656  sm->smt_source ;
657  smt_srf_event(smc,
658  SMT_EVENT_MAC_NEIGHBOR_CHANGE,
659  INDEX_MAC,0) ;
660  smt_echo_test(smc,1) ;
661  }
662  smc->mib.m[MAC0].fddiMACDA_Flag = FALSE ;
663  update_dac(smc,1) ;
664  smc->sm.smt_tvd = smt_get_time() ;
665  smc->mib.m[MAC0].fddiMACDupAddressTest =
666  DA_PASSED ;
667  if (smc->r.dup_addr_test != DA_PASSED) {
668  smc->r.dup_addr_test = DA_PASSED ;
669  queue_event(smc,EVENT_RMT,RM_DUP_ADDR) ;
670  }
671  }
672  else if (sm->smt_tid ==
673  smc->sm.pend[SMT_TID_NIF_TEST]) {
674  DB_SMT("SMT : NIF test TID ok\n",0,0) ;
675  }
676  else {
677  DB_SMT("SMT : expected TID %lx, got %lx\n",
678  smc->sm.pend[SMT_TID_NIF],sm->smt_tid) ;
679  }
680  break ;
681  default :
682  illegal = 2 ;
683  break ;
684  }
685  break ;
686  case SMT_SIF_CONFIG : /* station information */
687  if (sm->smt_type != SMT_REQUEST)
688  break ;
689  DB_SMT("SMT : replying to SIF Config request from %s\n",
690  addr_to_string(&sm->smt_source),0) ;
691  smt_send_sif_config(smc,&sm->smt_source,sm->smt_tid,local) ;
692  break ;
693  case SMT_SIF_OPER : /* station information */
694  if (sm->smt_type != SMT_REQUEST)
695  break ;
696  DB_SMT("SMT : replying to SIF Operation request from %s\n",
697  addr_to_string(&sm->smt_source),0) ;
698  smt_send_sif_operation(smc,&sm->smt_source,sm->smt_tid,local) ;
699  break ;
700  case SMT_ECF : /* echo frame */
701  switch (sm->smt_type) {
702  case SMT_REPLY :
703  smc->mib.priv.fddiPRIVECF_Reply_Rx++ ;
704  DB_SMT("SMT: received ECF reply from %s\n",
705  addr_to_string(&sm->smt_source),0) ;
706  if (sm_to_para(smc,sm,SMT_P_ECHODATA) == NULL) {
707  DB_SMT("SMT: ECHODATA missing\n",0,0) ;
708  break ;
709  }
710  if (sm->smt_tid == smc->sm.pend[SMT_TID_ECF]) {
711  DB_SMT("SMT : ECF test TID ok\n",0,0) ;
712  }
713  else if (sm->smt_tid == smc->sm.pend[SMT_TID_ECF_UNA]) {
714  DB_SMT("SMT : ECF test UNA ok\n",0,0) ;
715  }
716  else if (sm->smt_tid == smc->sm.pend[SMT_TID_ECF_DNA]) {
717  DB_SMT("SMT : ECF test DNA ok\n",0,0) ;
718  }
719  else {
720  DB_SMT("SMT : expected TID %lx, got %lx\n",
721  smc->sm.pend[SMT_TID_ECF],
722  sm->smt_tid) ;
723  }
724  break ;
725  case SMT_REQUEST :
726  smc->mib.priv.fddiPRIVECF_Req_Rx++ ;
727  {
728  if (sm->smt_len && !sm_to_para(smc,sm,SMT_P_ECHODATA)) {
729  DB_SMT("SMT: ECF with para problem,sending RDF\n",0,0) ;
730  smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_LENGTH,
731  local) ;
732  break ;
733  }
734  DB_SMT("SMT - sending ECF reply to %s\n",
735  addr_to_string(&sm->smt_source),0) ;
736 
737  /* set destination addr. & reply */
738  sm->smt_dest = sm->smt_source ;
739  sm->smt_type = SMT_REPLY ;
740  dump_smt(smc,sm,"ECF REPLY") ;
741  smc->mib.priv.fddiPRIVECF_Reply_Tx++ ;
742  smt_send_frame(smc,mb,FC_SMT_INFO,local) ;
743  return ; /* DON'T free mbuf */
744  }
745  default :
746  illegal = 1 ;
747  break ;
748  }
749  break ;
750 #ifndef BOOT
751  case SMT_RAF : /* resource allocation */
752 #ifdef ESS
753  DB_ESSN(2,"ESS: RAF frame received\n",0,0) ;
754  fs = ess_raf_received_pack(smc,mb,sm,fs) ;
755 #endif
756 
757 #ifdef SBA
758  DB_SBAN(2,"SBA: RAF frame received\n",0,0) ;
759  sba_raf_received_pack(smc,sm,fs) ;
760 #endif
761  break ;
762  case SMT_RDF : /* request denied */
763  smc->mib.priv.fddiPRIVRDF_Rx++ ;
764  break ;
765  case SMT_ESF : /* extended service - not supported */
766  if (sm->smt_type == SMT_REQUEST) {
767  DB_SMT("SMT - received ESF, sending RDF\n",0,0) ;
768  smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_CLASS,local) ;
769  }
770  break ;
771  case SMT_PMF_GET :
772  case SMT_PMF_SET :
773  if (sm->smt_type != SMT_REQUEST)
774  break ;
775  /* update statistics */
776  if (sm->smt_class == SMT_PMF_GET)
777  smc->mib.priv.fddiPRIVPMF_Get_Rx++ ;
778  else
779  smc->mib.priv.fddiPRIVPMF_Set_Rx++ ;
780  /*
781  * ignore PMF SET with I/G set
782  */
783  if ((sm->smt_class == SMT_PMF_SET) &&
784  !is_individual(&sm->smt_dest)) {
785  DB_SMT("SMT: ignoring PMF-SET with I/G set\n",0,0) ;
786  break ;
787  }
788  smt_pmf_received_pack(smc,mb, local) ;
789  break ;
790  case SMT_SRF :
791  dump_smt(smc,sm,"SRF received") ;
792  break ;
793  default :
794  if (sm->smt_type != SMT_REQUEST)
795  break ;
796  /*
797  * For frames with unknown class:
798  * we need to send a RDF frame according to 8.1.3.1.1,
799  * only if it is a REQUEST.
800  */
801  DB_SMT("SMT : class = %d, send RDF to %s\n",
802  sm->smt_class, addr_to_string(&sm->smt_source)) ;
803 
804  smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_CLASS,local) ;
805  break ;
806 #endif
807  }
808  if (illegal) {
809  DB_SMT("SMT: discarding invalid frame, reason = %d\n",
810  illegal,0) ;
811  }
812  smt_free_mbuf(smc,mb) ;
813 }
814 
815 static void update_dac(struct s_smc *smc, int report)
816 {
817  int cond ;
818 
819  cond = ( smc->mib.m[MAC0].fddiMACUNDA_Flag |
820  smc->mib.m[MAC0].fddiMACDA_Flag) != 0 ;
821  if (report && (cond != smc->mib.m[MAC0].fddiMACDuplicateAddressCond))
822  smt_srf_event(smc, SMT_COND_MAC_DUP_ADDR,INDEX_MAC,cond) ;
823  else
824  smc->mib.m[MAC0].fddiMACDuplicateAddressCond = cond ;
825 }
826 
827 /*
828  * send SMT frame
829  * set source address
830  * set station ID
831  * send frame
832  */
833 void smt_send_frame(struct s_smc *smc, SMbuf *mb, int fc, int local)
834 /* SMbuf *mb; buffer to send */
835 /* int fc; FC value */
836 {
837  struct smt_header *sm ;
838 
839  if (!smc->r.sm_ma_avail && !local) {
840  smt_free_mbuf(smc,mb) ;
841  return ;
842  }
843  sm = smtod(mb,struct smt_header *) ;
844  sm->smt_source = smc->mib.m[MAC0].fddiMACSMTAddress ;
845  sm->smt_sid = smc->mib.fddiSMTStationId ;
846 
847  smt_swap_para(sm,(int) mb->sm_len,0) ; /* swap para & header */
848  hwm_conv_can(smc,(char *)sm,12) ; /* convert SA and DA */
849  smc->mib.m[MAC0].fddiMACSMTTransmit_Ct++ ;
850  smt_send_mbuf(smc,mb,local ? FC_SMT_LOC : fc) ;
851 }
852 
853 /*
854  * generate and send RDF
855  */
856 static void smt_send_rdf(struct s_smc *smc, SMbuf *rej, int fc, int reason,
857  int local)
858 /* SMbuf *rej; mbuf of offending frame */
859 /* int fc; FC of denied frame */
860 /* int reason; reason code */
861 {
862  SMbuf *mb ;
863  struct smt_header *sm ; /* header of offending frame */
864  struct smt_rdf *rdf ;
865  int len ;
866  int frame_len ;
867 
868  sm = smtod(rej,struct smt_header *) ;
869  if (sm->smt_type != SMT_REQUEST)
870  return ;
871 
872  DB_SMT("SMT: sending RDF to %s,reason = 0x%x\n",
873  addr_to_string(&sm->smt_source),reason) ;
874 
875 
876  /*
877  * note: get framelength from MAC length, NOT from SMT header
878  * smt header length is included in sm_len
879  */
880  frame_len = rej->sm_len ;
881 
882  if (!(mb=smt_build_frame(smc,SMT_RDF,SMT_REPLY,sizeof(struct smt_rdf))))
883  return ;
884  rdf = smtod(mb,struct smt_rdf *) ;
885  rdf->smt.smt_tid = sm->smt_tid ; /* use TID from sm */
886  rdf->smt.smt_dest = sm->smt_source ; /* set dest = source */
887 
888  /* set P12 */
889  rdf->reason.para.p_type = SMT_P_REASON ;
890  rdf->reason.para.p_len = sizeof(struct smt_p_reason) - PARA_LEN ;
891  rdf->reason.rdf_reason = reason ;
892 
893  /* set P14 */
894  rdf->version.para.p_type = SMT_P_VERSION ;
895  rdf->version.para.p_len = sizeof(struct smt_p_version) - PARA_LEN ;
896  rdf->version.v_pad = 0 ;
897  rdf->version.v_n = 1 ;
898  rdf->version.v_index = 1 ;
899  rdf->version.v_version[0] = SMT_VID_2 ;
900  rdf->version.v_pad2 = 0 ;
901 
902  /* set P13 */
903  if ((unsigned) frame_len <= SMT_MAX_INFO_LEN - sizeof(*rdf) +
904  2*sizeof(struct smt_header))
905  len = frame_len ;
906  else
907  len = SMT_MAX_INFO_LEN - sizeof(*rdf) +
908  2*sizeof(struct smt_header) ;
909  /* make length multiple of 4 */
910  len &= ~3 ;
911  rdf->refused.para.p_type = SMT_P_REFUSED ;
912  /* length of para is smt_frame + ref_fc */
913  rdf->refused.para.p_len = len + 4 ;
914  rdf->refused.ref_fc = fc ;
915 
916  /* swap it back */
917  smt_swap_para(sm,frame_len,0) ;
918 
919  memcpy((char *) &rdf->refused.ref_header,(char *) sm,len) ;
920 
921  len -= sizeof(struct smt_header) ;
922  mb->sm_len += len ;
923  rdf->smt.smt_len += len ;
924 
925  dump_smt(smc,(struct smt_header *)rdf,"RDF") ;
926  smc->mib.priv.fddiPRIVRDF_Tx++ ;
927  smt_send_frame(smc,mb,FC_SMT_INFO,local) ;
928 }
929 
930 /*
931  * generate and send NIF
932  */
933 static void smt_send_nif(struct s_smc *smc, const struct fddi_addr *dest,
934  int fc, u_long tid, int type, int local)
935 /* struct fddi_addr *dest; dest address */
936 /* int fc; frame control */
937 /* u_long tid; transaction id */
938 /* int type; frame type */
939 {
940  struct smt_nif *nif ;
941  SMbuf *mb ;
942 
943  if (!(mb = smt_build_frame(smc,SMT_NIF,type,sizeof(struct smt_nif))))
944  return ;
945  nif = smtod(mb, struct smt_nif *) ;
946  smt_fill_una(smc,&nif->una) ; /* set UNA */
947  smt_fill_sde(smc,&nif->sde) ; /* set station descriptor */
948  smt_fill_state(smc,&nif->state) ; /* set state information */
949 #ifdef SMT6_10
950  smt_fill_fsc(smc,&nif->fsc) ; /* set frame status cap. */
951 #endif
952  nif->smt.smt_dest = *dest ; /* destination address */
953  nif->smt.smt_tid = tid ; /* transaction ID */
954  dump_smt(smc,(struct smt_header *)nif,"NIF") ;
955  smt_send_frame(smc,mb,fc,local) ;
956 }
957 
958 #ifdef DEBUG
959 /*
960  * send NIF request (test purpose)
961  */
962 static void smt_send_nif_request(struct s_smc *smc, struct fddi_addr *dest)
963 {
964  smc->sm.pend[SMT_TID_NIF_TEST] = smt_get_tid(smc) ;
965  smt_send_nif(smc,dest, FC_SMT_INFO, smc->sm.pend[SMT_TID_NIF_TEST],
966  SMT_REQUEST,0) ;
967 }
968 
969 /*
970  * send ECF request (test purpose)
971  */
972 static void smt_send_ecf_request(struct s_smc *smc, struct fddi_addr *dest,
973  int len)
974 {
975  smc->sm.pend[SMT_TID_ECF] = smt_get_tid(smc) ;
976  smt_send_ecf(smc,dest, FC_SMT_INFO, smc->sm.pend[SMT_TID_ECF],
977  SMT_REQUEST,len) ;
978 }
979 #endif
980 
981 /*
982  * echo test
983  */
984 static void smt_echo_test(struct s_smc *smc, int dna)
985 {
986  u_long tid ;
987 
988  smc->sm.pend[dna ? SMT_TID_ECF_DNA : SMT_TID_ECF_UNA] =
989  tid = smt_get_tid(smc) ;
990  smt_send_ecf(smc, dna ?
991  &smc->mib.m[MAC0].fddiMACDownstreamNbr :
992  &smc->mib.m[MAC0].fddiMACUpstreamNbr,
993  FC_SMT_INFO,tid, SMT_REQUEST, (SMT_TEST_ECHO_LEN & ~3)-8) ;
994 }
995 
996 /*
997  * generate and send ECF
998  */
999 static void smt_send_ecf(struct s_smc *smc, struct fddi_addr *dest, int fc,
1000  u_long tid, int type, int len)
1001 /* struct fddi_addr *dest; dest address */
1002 /* int fc; frame control */
1003 /* u_long tid; transaction id */
1004 /* int type; frame type */
1005 /* int len; frame length */
1006 {
1007  struct smt_ecf *ecf ;
1008  SMbuf *mb ;
1009 
1010  if (!(mb = smt_build_frame(smc,SMT_ECF,type,SMT_ECF_LEN + len)))
1011  return ;
1012  ecf = smtod(mb, struct smt_ecf *) ;
1013 
1014  smt_fill_echo(smc,&ecf->ec_echo,tid,len) ; /* set ECHO */
1015  ecf->smt.smt_dest = *dest ; /* destination address */
1016  ecf->smt.smt_tid = tid ; /* transaction ID */
1017  smc->mib.priv.fddiPRIVECF_Req_Tx++ ;
1018  smt_send_frame(smc,mb,fc,0) ;
1019 }
1020 
1021 /*
1022  * generate and send SIF config response
1023  */
1024 
1025 static void smt_send_sif_config(struct s_smc *smc, struct fddi_addr *dest,
1026  u_long tid, int local)
1027 /* struct fddi_addr *dest; dest address */
1028 /* u_long tid; transaction id */
1029 {
1030  struct smt_sif_config *sif ;
1031  SMbuf *mb ;
1032  int len ;
1033  if (!(mb = smt_build_frame(smc,SMT_SIF_CONFIG,SMT_REPLY,
1034  SIZEOF_SMT_SIF_CONFIG)))
1035  return ;
1036 
1037  sif = smtod(mb, struct smt_sif_config *) ;
1038  smt_fill_timestamp(smc,&sif->ts) ; /* set time stamp */
1039  smt_fill_sde(smc,&sif->sde) ; /* set station descriptor */
1040  smt_fill_version(smc,&sif->version) ; /* set version information */
1041  smt_fill_state(smc,&sif->state) ; /* set state information */
1042  smt_fill_policy(smc,&sif->policy) ; /* set station policy */
1043  smt_fill_latency(smc,&sif->latency); /* set station latency */
1044  smt_fill_neighbor(smc,&sif->neighbor); /* set station neighbor */
1045  smt_fill_setcount(smc,&sif->setcount) ; /* set count */
1046  len = smt_fill_path(smc,&sif->path); /* set station path descriptor*/
1047  sif->smt.smt_dest = *dest ; /* destination address */
1048  sif->smt.smt_tid = tid ; /* transaction ID */
1049  smt_add_frame_len(mb,len) ; /* adjust length fields */
1050  dump_smt(smc,(struct smt_header *)sif,"SIF Configuration Reply") ;
1051  smt_send_frame(smc,mb,FC_SMT_INFO,local) ;
1052 }
1053 
1054 /*
1055  * generate and send SIF operation response
1056  */
1057 
1058 static void smt_send_sif_operation(struct s_smc *smc, struct fddi_addr *dest,
1059  u_long tid, int local)
1060 /* struct fddi_addr *dest; dest address */
1061 /* u_long tid; transaction id */
1062 {
1063  struct smt_sif_operation *sif ;
1064  SMbuf *mb ;
1065  int ports ;
1066  int i ;
1067 
1068  ports = NUMPHYS ;
1069 #ifndef CONCENTRATOR
1070  if (smc->s.sas == SMT_SAS)
1071  ports = 1 ;
1072 #endif
1073 
1074  if (!(mb = smt_build_frame(smc,SMT_SIF_OPER,SMT_REPLY,
1075  SIZEOF_SMT_SIF_OPERATION+ports*sizeof(struct smt_p_lem))))
1076  return ;
1077  sif = smtod(mb, struct smt_sif_operation *) ;
1078  smt_fill_timestamp(smc,&sif->ts) ; /* set time stamp */
1079  smt_fill_mac_status(smc,&sif->status) ; /* set mac status */
1080  smt_fill_mac_counter(smc,&sif->mc) ; /* set mac counter field */
1081  smt_fill_mac_fnc(smc,&sif->fnc) ; /* set frame not copied counter */
1082  smt_fill_manufacturer(smc,&sif->man) ; /* set manufacturer field */
1083  smt_fill_user(smc,&sif->user) ; /* set user field */
1084  smt_fill_setcount(smc,&sif->setcount) ; /* set count */
1085  /*
1086  * set link error mon information
1087  */
1088  if (ports == 1) {
1089  smt_fill_lem(smc,sif->lem,PS) ;
1090  }
1091  else {
1092  for (i = 0 ; i < ports ; i++) {
1093  smt_fill_lem(smc,&sif->lem[i],i) ;
1094  }
1095  }
1096 
1097  sif->smt.smt_dest = *dest ; /* destination address */
1098  sif->smt.smt_tid = tid ; /* transaction ID */
1099  dump_smt(smc,(struct smt_header *)sif,"SIF Operation Reply") ;
1100  smt_send_frame(smc,mb,FC_SMT_INFO,local) ;
1101 }
1102 
1103 /*
1104  * get and initialize SMT frame
1105  */
1106 SMbuf *smt_build_frame(struct s_smc *smc, int class, int type,
1107  int length)
1108 {
1109  SMbuf *mb ;
1110  struct smt_header *smt ;
1111 
1112 #if 0
1113  if (!smc->r.sm_ma_avail) {
1114  return 0;
1115  }
1116 #endif
1117  if (!(mb = smt_get_mbuf(smc)))
1118  return mb;
1119 
1120  mb->sm_len = length ;
1121  smt = smtod(mb, struct smt_header *) ;
1122  smt->smt_dest = fddi_broadcast ; /* set dest = broadcast */
1123  smt->smt_class = class ;
1124  smt->smt_type = type ;
1125  switch (class) {
1126  case SMT_NIF :
1127  case SMT_SIF_CONFIG :
1128  case SMT_SIF_OPER :
1129  case SMT_ECF :
1130  smt->smt_version = SMT_VID ;
1131  break ;
1132  default :
1133  smt->smt_version = SMT_VID_2 ;
1134  break ;
1135  }
1136  smt->smt_tid = smt_get_tid(smc) ; /* set transaction ID */
1137  smt->smt_pad = 0 ;
1138  smt->smt_len = length - sizeof(struct smt_header) ;
1139  return mb;
1140 }
1141 
1142 static void smt_add_frame_len(SMbuf *mb, int len)
1143 {
1144  struct smt_header *smt ;
1145 
1146  smt = smtod(mb, struct smt_header *) ;
1147  smt->smt_len += len ;
1148  mb->sm_len += len ;
1149 }
1150 
1151 
1152 
1153 /*
1154  * fill values in UNA parameter
1155  */
1156 static void smt_fill_una(struct s_smc *smc, struct smt_p_una *una)
1157 {
1158  SMTSETPARA(una,SMT_P_UNA) ;
1159  una->una_pad = 0 ;
1160  una->una_node = smc->mib.m[MAC0].fddiMACUpstreamNbr ;
1161 }
1162 
1163 /*
1164  * fill values in SDE parameter
1165  */
1166 static void smt_fill_sde(struct s_smc *smc, struct smt_p_sde *sde)
1167 {
1168  SMTSETPARA(sde,SMT_P_SDE) ;
1169  sde->sde_non_master = smc->mib.fddiSMTNonMaster_Ct ;
1170  sde->sde_master = smc->mib.fddiSMTMaster_Ct ;
1171  sde->sde_mac_count = NUMMACS ; /* only 1 MAC */
1172 #ifdef CONCENTRATOR
1173  sde->sde_type = SMT_SDE_CONCENTRATOR ;
1174 #else
1175  sde->sde_type = SMT_SDE_STATION ;
1176 #endif
1177 }
1178 
1179 /*
1180  * fill in values in station state parameter
1181  */
1182 static void smt_fill_state(struct s_smc *smc, struct smt_p_state *state)
1183 {
1184  int top ;
1185  int twist ;
1186 
1187  SMTSETPARA(state,SMT_P_STATE) ;
1188  state->st_pad = 0 ;
1189 
1190  /* determine topology */
1191  top = 0 ;
1192  if (smc->mib.fddiSMTPeerWrapFlag) {
1193  top |= SMT_ST_WRAPPED ; /* state wrapped */
1194  }
1195 #ifdef CONCENTRATOR
1196  if (cfm_status_unattached(smc)) {
1197  top |= SMT_ST_UNATTACHED ; /* unattached concentrator */
1198  }
1199 #endif
1200  if ((twist = pcm_status_twisted(smc)) & 1) {
1201  top |= SMT_ST_TWISTED_A ; /* twisted cable */
1202  }
1203  if (twist & 2) {
1204  top |= SMT_ST_TWISTED_B ; /* twisted cable */
1205  }
1206 #ifdef OPT_SRF
1207  top |= SMT_ST_SRF ;
1208 #endif
1209  if (pcm_rooted_station(smc))
1210  top |= SMT_ST_ROOTED_S ;
1211  if (smc->mib.a[0].fddiPATHSbaPayload != 0)
1212  top |= SMT_ST_SYNC_SERVICE ;
1213  state->st_topology = top ;
1214  state->st_dupl_addr =
1215  ((smc->mib.m[MAC0].fddiMACDA_Flag ? SMT_ST_MY_DUPA : 0 ) |
1216  (smc->mib.m[MAC0].fddiMACUNDA_Flag ? SMT_ST_UNA_DUPA : 0)) ;
1217 }
1218 
1219 /*
1220  * fill values in timestamp parameter
1221  */
1222 static void smt_fill_timestamp(struct s_smc *smc, struct smt_p_timestamp *ts)
1223 {
1224 
1225  SMTSETPARA(ts,SMT_P_TIMESTAMP) ;
1226  smt_set_timestamp(smc,ts->ts_time) ;
1227 }
1228 
1229 void smt_set_timestamp(struct s_smc *smc, u_char *p)
1230 {
1231  u_long time ;
1232  u_long utime ;
1233 
1234  /*
1235  * timestamp is 64 bits long ; resolution is 80 nS
1236  * our clock resolution is 10mS
1237  * 10mS/80ns = 125000 ~ 2^17 = 131072
1238  */
1239  utime = smt_get_time() ;
1240  time = utime * 100 ;
1241  time /= TICKS_PER_SECOND ;
1242  p[0] = 0 ;
1243  p[1] = (u_char)((time>>(8+8+8+8-1)) & 1) ;
1244  p[2] = (u_char)(time>>(8+8+8-1)) ;
1245  p[3] = (u_char)(time>>(8+8-1)) ;
1246  p[4] = (u_char)(time>>(8-1)) ;
1247  p[5] = (u_char)(time<<1) ;
1248  p[6] = (u_char)(smc->sm.uniq_ticks>>8) ;
1249  p[7] = (u_char)smc->sm.uniq_ticks ;
1250  /*
1251  * make sure we don't wrap: restart whenever the upper digits change
1252  */
1253  if (utime != smc->sm.uniq_time) {
1254  smc->sm.uniq_ticks = 0 ;
1255  }
1256  smc->sm.uniq_ticks++ ;
1257  smc->sm.uniq_time = utime ;
1258 }
1259 
1260 /*
1261  * fill values in station policy parameter
1262  */
1263 static void smt_fill_policy(struct s_smc *smc, struct smt_p_policy *policy)
1264 {
1265  int i ;
1266  const u_char *map ;
1267  u_short in ;
1268  u_short out ;
1269 
1270  /*
1271  * MIB para 101b (fddiSMTConnectionPolicy) coding
1272  * is different from 0005 coding
1273  */
1274  static const u_char ansi_weirdness[16] = {
1275  0,7,5,3,8,1,6,4,9,10,2,11,12,13,14,15
1276  } ;
1277  SMTSETPARA(policy,SMT_P_POLICY) ;
1278 
1279  out = 0 ;
1280  in = smc->mib.fddiSMTConnectionPolicy ;
1281  for (i = 0, map = ansi_weirdness ; i < 16 ; i++) {
1282  if (in & 1)
1283  out |= (1<<*map) ;
1284  in >>= 1 ;
1285  map++ ;
1286  }
1287  policy->pl_config = smc->mib.fddiSMTConfigPolicy ;
1288  policy->pl_connect = out ;
1289 }
1290 
1291 /*
1292  * fill values in latency equivalent parameter
1293  */
1294 static void smt_fill_latency(struct s_smc *smc, struct smt_p_latency *latency)
1295 {
1296  SMTSETPARA(latency,SMT_P_LATENCY) ;
1297 
1298  latency->lt_phyout_idx1 = phy_index(smc,0) ;
1299  latency->lt_latency1 = 10 ; /* in octets (byte clock) */
1300  /*
1301  * note: latency has two phy entries by definition
1302  * for a SAS, the 2nd one is null
1303  */
1304  if (smc->s.sas == SMT_DAS) {
1305  latency->lt_phyout_idx2 = phy_index(smc,1) ;
1306  latency->lt_latency2 = 10 ; /* in octets (byte clock) */
1307  }
1308  else {
1309  latency->lt_phyout_idx2 = 0 ;
1310  latency->lt_latency2 = 0 ;
1311  }
1312 }
1313 
1314 /*
1315  * fill values in MAC neighbors parameter
1316  */
1317 static void smt_fill_neighbor(struct s_smc *smc, struct smt_p_neighbor *neighbor)
1318 {
1319  SMTSETPARA(neighbor,SMT_P_NEIGHBORS) ;
1320 
1321  neighbor->nb_mib_index = INDEX_MAC ;
1322  neighbor->nb_mac_index = mac_index(smc,1) ;
1323  neighbor->nb_una = smc->mib.m[MAC0].fddiMACUpstreamNbr ;
1324  neighbor->nb_dna = smc->mib.m[MAC0].fddiMACDownstreamNbr ;
1325 }
1326 
1327 /*
1328  * fill values in path descriptor
1329  */
1330 #ifdef CONCENTRATOR
1331 #define ALLPHYS NUMPHYS
1332 #else
1333 #define ALLPHYS ((smc->s.sas == SMT_SAS) ? 1 : 2)
1334 #endif
1335 
1336 static int smt_fill_path(struct s_smc *smc, struct smt_p_path *path)
1337 {
1338  SK_LOC_DECL(int,type) ;
1339  SK_LOC_DECL(int,state) ;
1340  SK_LOC_DECL(int,remote) ;
1341  SK_LOC_DECL(int,mac) ;
1342  int len ;
1343  int p ;
1344  int physp ;
1345  struct smt_phy_rec *phy ;
1346  struct smt_mac_rec *pd_mac ;
1347 
1348  len = PARA_LEN +
1349  sizeof(struct smt_mac_rec) * NUMMACS +
1350  sizeof(struct smt_phy_rec) * ALLPHYS ;
1351  path->para.p_type = SMT_P_PATH ;
1352  path->para.p_len = len - PARA_LEN ;
1353 
1354  /* PHYs */
1355  for (p = 0,phy = path->pd_phy ; p < ALLPHYS ; p++, phy++) {
1356  physp = p ;
1357 #ifndef CONCENTRATOR
1358  if (smc->s.sas == SMT_SAS)
1359  physp = PS ;
1360 #endif
1361  pcm_status_state(smc,physp,&type,&state,&remote,&mac) ;
1362 #ifdef LITTLE_ENDIAN
1363  phy->phy_mib_index = smt_swap_short((u_short)p+INDEX_PORT) ;
1364 #else
1365  phy->phy_mib_index = p+INDEX_PORT ;
1366 #endif
1367  phy->phy_type = type ;
1368  phy->phy_connect_state = state ;
1369  phy->phy_remote_type = remote ;
1370  phy->phy_remote_mac = mac ;
1371  phy->phy_resource_idx = phy_con_resource_index(smc,p) ;
1372  }
1373 
1374  /* MAC */
1375  pd_mac = (struct smt_mac_rec *) phy ;
1376  pd_mac->mac_addr = smc->mib.m[MAC0].fddiMACSMTAddress ;
1377  pd_mac->mac_resource_idx = mac_con_resource_index(smc,1) ;
1378  return len;
1379 }
1380 
1381 /*
1382  * fill values in mac status
1383  */
1384 static void smt_fill_mac_status(struct s_smc *smc, struct smt_p_mac_status *st)
1385 {
1386  SMTSETPARA(st,SMT_P_MAC_STATUS) ;
1387 
1388  st->st_mib_index = INDEX_MAC ;
1389  st->st_mac_index = mac_index(smc,1) ;
1390 
1391  mac_update_counter(smc) ;
1392  /*
1393  * timer values are represented in SMT as 2's complement numbers
1394  * units : internal : 2's complement BCLK
1395  */
1396  st->st_t_req = smc->mib.m[MAC0].fddiMACT_Req ;
1397  st->st_t_neg = smc->mib.m[MAC0].fddiMACT_Neg ;
1398  st->st_t_max = smc->mib.m[MAC0].fddiMACT_Max ;
1399  st->st_tvx_value = smc->mib.m[MAC0].fddiMACTvxValue ;
1400  st->st_t_min = smc->mib.m[MAC0].fddiMACT_Min ;
1401 
1402  st->st_sba = smc->mib.a[PATH0].fddiPATHSbaPayload ;
1403  st->st_frame_ct = smc->mib.m[MAC0].fddiMACFrame_Ct ;
1404  st->st_error_ct = smc->mib.m[MAC0].fddiMACError_Ct ;
1405  st->st_lost_ct = smc->mib.m[MAC0].fddiMACLost_Ct ;
1406 }
1407 
1408 /*
1409  * fill values in LEM status
1410  */
1411 static void smt_fill_lem(struct s_smc *smc, struct smt_p_lem *lem, int phy)
1412 {
1413  struct fddi_mib_p *mib ;
1414 
1415  mib = smc->y[phy].mib ;
1416 
1417  SMTSETPARA(lem,SMT_P_LEM) ;
1418  lem->lem_mib_index = phy+INDEX_PORT ;
1419  lem->lem_phy_index = phy_index(smc,phy) ;
1420  lem->lem_pad2 = 0 ;
1421  lem->lem_cutoff = mib->fddiPORTLer_Cutoff ;
1422  lem->lem_alarm = mib->fddiPORTLer_Alarm ;
1423  /* long term bit error rate */
1424  lem->lem_estimate = mib->fddiPORTLer_Estimate ;
1425  /* # of rejected connections */
1426  lem->lem_reject_ct = mib->fddiPORTLem_Reject_Ct ;
1427  lem->lem_ct = mib->fddiPORTLem_Ct ; /* total number of errors */
1428 }
1429 
1430 /*
1431  * fill version parameter
1432  */
1433 static void smt_fill_version(struct s_smc *smc, struct smt_p_version *vers)
1434 {
1435  SK_UNUSED(smc) ;
1436  SMTSETPARA(vers,SMT_P_VERSION) ;
1437  vers->v_pad = 0 ;
1438  vers->v_n = 1 ; /* one version is enough .. */
1439  vers->v_index = 1 ;
1440  vers->v_version[0] = SMT_VID_2 ;
1441  vers->v_pad2 = 0 ;
1442 }
1443 
1444 #ifdef SMT6_10
1445 /*
1446  * fill frame status capabilities
1447  */
1448 /*
1449  * note: this para 200B is NOT in swap table, because it's also set in
1450  * PMF add_para
1451  */
1452 static void smt_fill_fsc(struct s_smc *smc, struct smt_p_fsc *fsc)
1453 {
1454  SK_UNUSED(smc) ;
1455  SMTSETPARA(fsc,SMT_P_FSC) ;
1456  fsc->fsc_pad0 = 0 ;
1457  fsc->fsc_mac_index = INDEX_MAC ; /* this is MIB ; MIB is NOT
1458  * mac_index ()i !
1459  */
1460  fsc->fsc_pad1 = 0 ;
1461  fsc->fsc_value = FSC_TYPE0 ; /* "normal" node */
1462 #ifdef LITTLE_ENDIAN
1463  fsc->fsc_mac_index = smt_swap_short(INDEX_MAC) ;
1464  fsc->fsc_value = smt_swap_short(FSC_TYPE0) ;
1465 #endif
1466 }
1467 #endif
1468 
1469 /*
1470  * fill mac counter field
1471  */
1472 static void smt_fill_mac_counter(struct s_smc *smc, struct smt_p_mac_counter *mc)
1473 {
1474  SMTSETPARA(mc,SMT_P_MAC_COUNTER) ;
1475  mc->mc_mib_index = INDEX_MAC ;
1476  mc->mc_index = mac_index(smc,1) ;
1477  mc->mc_receive_ct = smc->mib.m[MAC0].fddiMACCopied_Ct ;
1478  mc->mc_transmit_ct = smc->mib.m[MAC0].fddiMACTransmit_Ct ;
1479 }
1480 
1481 /*
1482  * fill mac frame not copied counter
1483  */
1484 static void smt_fill_mac_fnc(struct s_smc *smc, struct smt_p_mac_fnc *fnc)
1485 {
1486  SMTSETPARA(fnc,SMT_P_MAC_FNC) ;
1487  fnc->nc_mib_index = INDEX_MAC ;
1488  fnc->nc_index = mac_index(smc,1) ;
1489  fnc->nc_counter = smc->mib.m[MAC0].fddiMACNotCopied_Ct ;
1490 }
1491 
1492 
1493 /*
1494  * fill manufacturer field
1495  */
1496 static void smt_fill_manufacturer(struct s_smc *smc,
1497  struct smp_p_manufacturer *man)
1498 {
1499  SMTSETPARA(man,SMT_P_MANUFACTURER) ;
1500  memcpy((char *) man->mf_data,
1501  (char *) smc->mib.fddiSMTManufacturerData,
1502  sizeof(man->mf_data)) ;
1503 }
1504 
1505 /*
1506  * fill user field
1507  */
1508 static void smt_fill_user(struct s_smc *smc, struct smp_p_user *user)
1509 {
1510  SMTSETPARA(user,SMT_P_USER) ;
1511  memcpy((char *) user->us_data,
1512  (char *) smc->mib.fddiSMTUserData,
1513  sizeof(user->us_data)) ;
1514 }
1515 
1516 /*
1517  * fill set count
1518  */
1519 static void smt_fill_setcount(struct s_smc *smc, struct smt_p_setcount *setcount)
1520 {
1521  SK_UNUSED(smc) ;
1522  SMTSETPARA(setcount,SMT_P_SETCOUNT) ;
1523  setcount->count = smc->mib.fddiSMTSetCount.count ;
1524  memcpy((char *)setcount->timestamp,
1525  (char *)smc->mib.fddiSMTSetCount.timestamp,8) ;
1526 }
1527 
1528 /*
1529  * fill echo data
1530  */
1531 static void smt_fill_echo(struct s_smc *smc, struct smt_p_echo *echo, u_long seed,
1532  int len)
1533 {
1534  u_char *p ;
1535 
1536  SK_UNUSED(smc) ;
1537  SMTSETPARA(echo,SMT_P_ECHODATA) ;
1538  echo->para.p_len = len ;
1539  for (p = echo->ec_data ; len ; len--) {
1540  *p++ = (u_char) seed ;
1541  seed += 13 ;
1542  }
1543 }
1544 
1545 /*
1546  * clear DNA and UNA
1547  * called from CFM if configuration changes
1548  */
1549 static void smt_clear_una_dna(struct s_smc *smc)
1550 {
1551  smc->mib.m[MAC0].fddiMACUpstreamNbr = SMT_Unknown ;
1552  smc->mib.m[MAC0].fddiMACDownstreamNbr = SMT_Unknown ;
1553 }
1554 
1555 static void smt_clear_old_una_dna(struct s_smc *smc)
1556 {
1557  smc->mib.m[MAC0].fddiMACOldUpstreamNbr = SMT_Unknown ;
1558  smc->mib.m[MAC0].fddiMACOldDownstreamNbr = SMT_Unknown ;
1559 }
1560 
1561 u_long smt_get_tid(struct s_smc *smc)
1562 {
1563  u_long tid ;
1564  while ((tid = ++(smc->sm.smt_tid) ^ SMT_TID_MAGIC) == 0)
1565  ;
1566  return tid & 0x3fffffffL;
1567 }
1568 
1569 
1570 /*
1571  * table of parameter lengths
1572  */
1573 static const struct smt_pdef {
1574  int ptype ;
1575  int plen ;
1576  const char *pswap ;
1577 } smt_pdef[] = {
1578  { SMT_P_UNA, sizeof(struct smt_p_una) ,
1579  SWAP_SMT_P_UNA } ,
1580  { SMT_P_SDE, sizeof(struct smt_p_sde) ,
1581  SWAP_SMT_P_SDE } ,
1582  { SMT_P_STATE, sizeof(struct smt_p_state) ,
1583  SWAP_SMT_P_STATE } ,
1584  { SMT_P_TIMESTAMP,sizeof(struct smt_p_timestamp) ,
1585  SWAP_SMT_P_TIMESTAMP } ,
1586  { SMT_P_POLICY, sizeof(struct smt_p_policy) ,
1587  SWAP_SMT_P_POLICY } ,
1588  { SMT_P_LATENCY, sizeof(struct smt_p_latency) ,
1589  SWAP_SMT_P_LATENCY } ,
1590  { SMT_P_NEIGHBORS,sizeof(struct smt_p_neighbor) ,
1591  SWAP_SMT_P_NEIGHBORS } ,
1592  { SMT_P_PATH, sizeof(struct smt_p_path) ,
1593  SWAP_SMT_P_PATH } ,
1594  { SMT_P_MAC_STATUS,sizeof(struct smt_p_mac_status) ,
1595  SWAP_SMT_P_MAC_STATUS } ,
1596  { SMT_P_LEM, sizeof(struct smt_p_lem) ,
1597  SWAP_SMT_P_LEM } ,
1598  { SMT_P_MAC_COUNTER,sizeof(struct smt_p_mac_counter) ,
1599  SWAP_SMT_P_MAC_COUNTER } ,
1600  { SMT_P_MAC_FNC,sizeof(struct smt_p_mac_fnc) ,
1601  SWAP_SMT_P_MAC_FNC } ,
1602  { SMT_P_PRIORITY,sizeof(struct smt_p_priority) ,
1603  SWAP_SMT_P_PRIORITY } ,
1604  { SMT_P_EB,sizeof(struct smt_p_eb) ,
1605  SWAP_SMT_P_EB } ,
1606  { SMT_P_MANUFACTURER,sizeof(struct smp_p_manufacturer) ,
1607  SWAP_SMT_P_MANUFACTURER } ,
1608  { SMT_P_REASON, sizeof(struct smt_p_reason) ,
1609  SWAP_SMT_P_REASON } ,
1610  { SMT_P_REFUSED, sizeof(struct smt_p_refused) ,
1611  SWAP_SMT_P_REFUSED } ,
1612  { SMT_P_VERSION, sizeof(struct smt_p_version) ,
1613  SWAP_SMT_P_VERSION } ,
1614 #ifdef ESS
1615  { SMT_P0015, sizeof(struct smt_p_0015) , SWAP_SMT_P0015 } ,
1616  { SMT_P0016, sizeof(struct smt_p_0016) , SWAP_SMT_P0016 } ,
1617  { SMT_P0017, sizeof(struct smt_p_0017) , SWAP_SMT_P0017 } ,
1618  { SMT_P0018, sizeof(struct smt_p_0018) , SWAP_SMT_P0018 } ,
1619  { SMT_P0019, sizeof(struct smt_p_0019) , SWAP_SMT_P0019 } ,
1620  { SMT_P001A, sizeof(struct smt_p_001a) , SWAP_SMT_P001A } ,
1621  { SMT_P001B, sizeof(struct smt_p_001b) , SWAP_SMT_P001B } ,
1622  { SMT_P001C, sizeof(struct smt_p_001c) , SWAP_SMT_P001C } ,
1623  { SMT_P001D, sizeof(struct smt_p_001d) , SWAP_SMT_P001D } ,
1624 #endif
1625 #if 0
1626  { SMT_P_FSC, sizeof(struct smt_p_fsc) ,
1627  SWAP_SMT_P_FSC } ,
1628 #endif
1629 
1630  { SMT_P_SETCOUNT,0, SWAP_SMT_P_SETCOUNT } ,
1631  { SMT_P1048, 0, SWAP_SMT_P1048 } ,
1632  { SMT_P208C, 0, SWAP_SMT_P208C } ,
1633  { SMT_P208D, 0, SWAP_SMT_P208D } ,
1634  { SMT_P208E, 0, SWAP_SMT_P208E } ,
1635  { SMT_P208F, 0, SWAP_SMT_P208F } ,
1636  { SMT_P2090, 0, SWAP_SMT_P2090 } ,
1637 #ifdef ESS
1638  { SMT_P320B, sizeof(struct smt_p_320b) , SWAP_SMT_P320B } ,
1639  { SMT_P320F, sizeof(struct smt_p_320f) , SWAP_SMT_P320F } ,
1640  { SMT_P3210, sizeof(struct smt_p_3210) , SWAP_SMT_P3210 } ,
1641 #endif
1642  { SMT_P4050, 0, SWAP_SMT_P4050 } ,
1643  { SMT_P4051, 0, SWAP_SMT_P4051 } ,
1644  { SMT_P4052, 0, SWAP_SMT_P4052 } ,
1645  { SMT_P4053, 0, SWAP_SMT_P4053 } ,
1646 } ;
1647 
1648 #define N_SMT_PLEN ARRAY_SIZE(smt_pdef)
1649 
1650 int smt_check_para(struct s_smc *smc, struct smt_header *sm,
1651  const u_short list[])
1652 {
1653  const u_short *p = list ;
1654  while (*p) {
1655  if (!sm_to_para(smc,sm,(int) *p)) {
1656  DB_SMT("SMT: smt_check_para - missing para %x\n",*p,0);
1657  return -1;
1658  }
1659  p++ ;
1660  }
1661  return 0;
1662 }
1663 
1664 void *sm_to_para(struct s_smc *smc, struct smt_header *sm, int para)
1665 {
1666  char *p ;
1667  int len ;
1668  int plen ;
1669  void *found = NULL;
1670 
1671  SK_UNUSED(smc) ;
1672 
1673  len = sm->smt_len ;
1674  p = (char *)(sm+1) ; /* pointer to info */
1675  while (len > 0 ) {
1676  if (((struct smt_para *)p)->p_type == para)
1677  found = (void *) p ;
1678  plen = ((struct smt_para *)p)->p_len + PARA_LEN ;
1679  p += plen ;
1680  len -= plen ;
1681  if (len < 0) {
1682  DB_SMT("SMT : sm_to_para - length error %d\n",plen,0) ;
1683  return NULL;
1684  }
1685  if ((plen & 3) && (para != SMT_P_ECHODATA)) {
1686  DB_SMT("SMT : sm_to_para - odd length %d\n",plen,0) ;
1687  return NULL;
1688  }
1689  if (found)
1690  return found;
1691  }
1692  return NULL;
1693 }
1694 
1695 #if 0
1696 /*
1697  * send ANTC data test frame
1698  */
1699 void fddi_send_antc(struct s_smc *smc, struct fddi_addr *dest)
1700 {
1701  SK_UNUSED(smc) ;
1702  SK_UNUSED(dest) ;
1703 #if 0
1704  SMbuf *mb ;
1705  struct smt_header *smt ;
1706  int i ;
1707  char *p ;
1708 
1709  mb = smt_get_mbuf() ;
1710  mb->sm_len = 3000+12 ;
1711  p = smtod(mb, char *) + 12 ;
1712  for (i = 0 ; i < 3000 ; i++)
1713  *p++ = 1 << (i&7) ;
1714 
1715  smt = smtod(mb, struct smt_header *) ;
1716  smt->smt_dest = *dest ;
1717  smt->smt_source = smc->mib.m[MAC0].fddiMACSMTAddress ;
1718  smt_send_mbuf(smc,mb,FC_ASYNC_LLC) ;
1719 #endif
1720 }
1721 #endif
1722 
1723 #ifdef DEBUG
1724 char *addr_to_string(struct fddi_addr *addr)
1725 {
1726  int i ;
1727  static char string[6*3] = "****" ;
1728 
1729  for (i = 0 ; i < 6 ; i++) {
1730  string[i * 3] = hex_asc_hi(addr->a[i]);
1731  string[i * 3 + 1] = hex_asc_lo(addr->a[i]);
1732  string[i * 3 + 2] = ':';
1733  }
1734  string[5 * 3 + 2] = 0;
1735  return string;
1736 }
1737 #endif
1738 
1739 #ifdef AM29K
1740 int smt_ifconfig(int argc, char *argv[])
1741 {
1742  if (argc >= 2 && !strcmp(argv[0],"opt_bypass") &&
1743  !strcmp(argv[1],"yes")) {
1744  smc->mib.fddiSMTBypassPresent = 1 ;
1745  return 0;
1746  }
1747  return amdfddi_config(0, argc, argv);
1748 }
1749 #endif
1750 
1751 /*
1752  * return static mac index
1753  */
1754 static int mac_index(struct s_smc *smc, int mac)
1755 {
1756  SK_UNUSED(mac) ;
1757 #ifdef CONCENTRATOR
1758  SK_UNUSED(smc) ;
1759  return NUMPHYS + 1;
1760 #else
1761  return (smc->s.sas == SMT_SAS) ? 2 : 3;
1762 #endif
1763 }
1764 
1765 /*
1766  * return static phy index
1767  */
1768 static int phy_index(struct s_smc *smc, int phy)
1769 {
1770  SK_UNUSED(smc) ;
1771  return phy + 1;
1772 }
1773 
1774 /*
1775  * return dynamic mac connection resource index
1776  */
1777 static int mac_con_resource_index(struct s_smc *smc, int mac)
1778 {
1779 #ifdef CONCENTRATOR
1780  SK_UNUSED(smc) ;
1781  SK_UNUSED(mac) ;
1782  return entity_to_index(smc, cem_get_downstream(smc, ENTITY_MAC));
1783 #else
1784  SK_UNUSED(mac) ;
1785  switch (smc->mib.fddiSMTCF_State) {
1786  case SC9_C_WRAP_A :
1787  case SC5_THRU_B :
1788  case SC11_C_WRAP_S :
1789  return 1;
1790  case SC10_C_WRAP_B :
1791  case SC4_THRU_A :
1792  return 2;
1793  }
1794  return smc->s.sas == SMT_SAS ? 2 : 3;
1795 #endif
1796 }
1797 
1798 /*
1799  * return dynamic phy connection resource index
1800  */
1801 static int phy_con_resource_index(struct s_smc *smc, int phy)
1802 {
1803 #ifdef CONCENTRATOR
1804  return entity_to_index(smc, cem_get_downstream(smc, ENTITY_PHY(phy))) ;
1805 #else
1806  switch (smc->mib.fddiSMTCF_State) {
1807  case SC9_C_WRAP_A :
1808  return phy == PA ? 3 : 2;
1809  case SC10_C_WRAP_B :
1810  return phy == PA ? 1 : 3;
1811  case SC4_THRU_A :
1812  return phy == PA ? 3 : 1;
1813  case SC5_THRU_B :
1814  return phy == PA ? 2 : 3;
1815  case SC11_C_WRAP_S :
1816  return 2;
1817  }
1818  return phy;
1819 #endif
1820 }
1821 
1822 #ifdef CONCENTRATOR
1823 static int entity_to_index(struct s_smc *smc, int e)
1824 {
1825  if (e == ENTITY_MAC)
1826  return mac_index(smc, 1);
1827  else
1828  return phy_index(smc, e - ENTITY_PHY(0));
1829 }
1830 #endif
1831 
1832 #ifdef LITTLE_ENDIAN
1833 static int smt_swap_short(u_short s)
1834 {
1835  return ((s>>8)&0xff) | ((s&0xff)<<8);
1836 }
1837 
1838 void smt_swap_para(struct smt_header *sm, int len, int direction)
1839 /* int direction; 0 encode 1 decode */
1840 {
1841  struct smt_para *pa ;
1842  const struct smt_pdef *pd ;
1843  char *p ;
1844  int plen ;
1845  int type ;
1846  int i ;
1847 
1848 /* printf("smt_swap_para sm %x len %d dir %d\n",
1849  sm,len,direction) ;
1850  */
1851  smt_string_swap((char *)sm,SWAP_SMTHEADER,len) ;
1852 
1853  /* swap args */
1854  len -= sizeof(struct smt_header) ;
1855 
1856  p = (char *) (sm + 1) ;
1857  while (len > 0) {
1858  pa = (struct smt_para *) p ;
1859  plen = pa->p_len ;
1860  type = pa->p_type ;
1861  pa->p_type = smt_swap_short(pa->p_type) ;
1862  pa->p_len = smt_swap_short(pa->p_len) ;
1863  if (direction) {
1864  plen = pa->p_len ;
1865  type = pa->p_type ;
1866  }
1867  /*
1868  * note: paras can have 0 length !
1869  */
1870  if (plen < 0)
1871  break ;
1872  plen += PARA_LEN ;
1873  for (i = N_SMT_PLEN, pd = smt_pdef; i ; i--,pd++) {
1874  if (pd->ptype == type)
1875  break ;
1876  }
1877  if (i && pd->pswap) {
1878  smt_string_swap(p+PARA_LEN,pd->pswap,len) ;
1879  }
1880  len -= plen ;
1881  p += plen ;
1882  }
1883 }
1884 
1885 static void smt_string_swap(char *data, const char *format, int len)
1886 {
1887  const char *open_paren = NULL ;
1888  int x ;
1889 
1890  while (len > 0 && *format) {
1891  switch (*format) {
1892  case '[' :
1893  open_paren = format ;
1894  break ;
1895  case ']' :
1896  format = open_paren ;
1897  break ;
1898  case '1' :
1899  case '2' :
1900  case '3' :
1901  case '4' :
1902  case '5' :
1903  case '6' :
1904  case '7' :
1905  case '8' :
1906  case '9' :
1907  data += *format - '0' ;
1908  len -= *format - '0' ;
1909  break ;
1910  case 'c':
1911  data++ ;
1912  len-- ;
1913  break ;
1914  case 's' :
1915  x = data[0] ;
1916  data[0] = data[1] ;
1917  data[1] = x ;
1918  data += 2 ;
1919  len -= 2 ;
1920  break ;
1921  case 'l' :
1922  x = data[0] ;
1923  data[0] = data[3] ;
1924  data[3] = x ;
1925  x = data[1] ;
1926  data[1] = data[2] ;
1927  data[2] = x ;
1928  data += 4 ;
1929  len -= 4 ;
1930  break ;
1931  }
1932  format++ ;
1933  }
1934 }
1935 #else
1936 void smt_swap_para(struct smt_header *sm, int len, int direction)
1937 /* int direction; 0 encode 1 decode */
1938 {
1939  SK_UNUSED(sm) ;
1940  SK_UNUSED(len) ;
1941  SK_UNUSED(direction) ;
1942 }
1943 #endif
1944 
1945 /*
1946  * PMF actions
1947  */
1948 int smt_action(struct s_smc *smc, int class, int code, int index)
1949 {
1950  int event ;
1951  int port ;
1952  DB_SMT("SMT: action %d code %d\n",class,code) ;
1953  switch(class) {
1954  case SMT_STATION_ACTION :
1955  switch(code) {
1956  case SMT_STATION_ACTION_CONNECT :
1957  smc->mib.fddiSMTRemoteDisconnectFlag = FALSE ;
1958  queue_event(smc,EVENT_ECM,EC_CONNECT) ;
1959  break ;
1960  case SMT_STATION_ACTION_DISCONNECT :
1961  queue_event(smc,EVENT_ECM,EC_DISCONNECT) ;
1962  smc->mib.fddiSMTRemoteDisconnectFlag = TRUE ;
1963  RS_SET(smc,RS_DISCONNECT) ;
1964  AIX_EVENT(smc, (u_long) FDDI_RING_STATUS, (u_long)
1965  FDDI_SMT_EVENT, (u_long) FDDI_REMOTE_DISCONNECT,
1966  smt_get_event_word(smc));
1967  break ;
1968  case SMT_STATION_ACTION_PATHTEST :
1969  AIX_EVENT(smc, (u_long) FDDI_RING_STATUS, (u_long)
1970  FDDI_SMT_EVENT, (u_long) FDDI_PATH_TEST,
1971  smt_get_event_word(smc));
1972  break ;
1973  case SMT_STATION_ACTION_SELFTEST :
1974  AIX_EVENT(smc, (u_long) FDDI_RING_STATUS, (u_long)
1975  FDDI_SMT_EVENT, (u_long) FDDI_REMOTE_SELF_TEST,
1976  smt_get_event_word(smc));
1977  break ;
1978  case SMT_STATION_ACTION_DISABLE_A :
1979  if (smc->y[PA].pc_mode == PM_PEER) {
1980  RS_SET(smc,RS_EVENT) ;
1981  queue_event(smc,EVENT_PCM+PA,PC_DISABLE) ;
1982  }
1983  break ;
1984  case SMT_STATION_ACTION_DISABLE_B :
1985  if (smc->y[PB].pc_mode == PM_PEER) {
1986  RS_SET(smc,RS_EVENT) ;
1987  queue_event(smc,EVENT_PCM+PB,PC_DISABLE) ;
1988  }
1989  break ;
1990  case SMT_STATION_ACTION_DISABLE_M :
1991  for (port = 0 ; port < NUMPHYS ; port++) {
1992  if (smc->mib.p[port].fddiPORTMy_Type != TM)
1993  continue ;
1994  RS_SET(smc,RS_EVENT) ;
1995  queue_event(smc,EVENT_PCM+port,PC_DISABLE) ;
1996  }
1997  break ;
1998  default :
1999  return 1;
2000  }
2001  break ;
2002  case SMT_PORT_ACTION :
2003  switch(code) {
2004  case SMT_PORT_ACTION_ENABLE :
2005  event = PC_ENABLE ;
2006  break ;
2007  case SMT_PORT_ACTION_DISABLE :
2008  event = PC_DISABLE ;
2009  break ;
2010  case SMT_PORT_ACTION_MAINT :
2011  event = PC_MAINT ;
2012  break ;
2013  case SMT_PORT_ACTION_START :
2014  event = PC_START ;
2015  break ;
2016  case SMT_PORT_ACTION_STOP :
2017  event = PC_STOP ;
2018  break ;
2019  default :
2020  return 1;
2021  }
2022  queue_event(smc,EVENT_PCM+index,event) ;
2023  break ;
2024  default :
2025  return 1;
2026  }
2027  return 0;
2028 }
2029 
2030 /*
2031  * canonical conversion of <len> bytes beginning form *data
2032  */
2033 #ifdef USE_CAN_ADDR
2034 static void hwm_conv_can(struct s_smc *smc, char *data, int len)
2035 {
2036  int i ;
2037 
2038  SK_UNUSED(smc) ;
2039 
2040  for (i = len; i ; i--, data++)
2041  *data = bitrev8(*data);
2042 }
2043 #endif
2044 
2045 #endif /* no SLIM_SMT */
2046 
Generated on Thu Jan 10 2013 14:06:24 for Linux Kernel by   doxygen 1.8.2