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18#include "h/types.h"
19#include "h/fddi.h"
20#include "h/smc.h"
21#include "h/smt_p.h"
22
23#define KERNEL
24#include "h/smtstate.h"
25
26#ifndef SLIM_SMT
27#ifndef BOOT
28
29#ifndef lint
30static const char ID_sccs[] = "@(#)srf.c 1.18 97/08/04 (C) SK " ;
31#endif
32
33
34
35
36
37static void clear_all_rep(struct s_smc *smc);
38static void clear_reported(struct s_smc *smc);
39static void smt_send_srf(struct s_smc *smc);
40static struct s_srf_evc *smt_get_evc(struct s_smc *smc, int code, int index);
41
42#define MAX_EVCS ARRAY_SIZE(smc->evcs)
43
44struct evc_init {
45 u_char code ;
46 u_char index ;
47 u_char n ;
48 u_short para ;
49} ;
50
51static const struct evc_init evc_inits[] = {
52 { SMT_COND_SMT_PEER_WRAP, 0,1,SMT_P1048 } ,
53
54 { SMT_COND_MAC_DUP_ADDR, INDEX_MAC, NUMMACS,SMT_P208C } ,
55 { SMT_COND_MAC_FRAME_ERROR, INDEX_MAC, NUMMACS,SMT_P208D } ,
56 { SMT_COND_MAC_NOT_COPIED, INDEX_MAC, NUMMACS,SMT_P208E } ,
57 { SMT_EVENT_MAC_NEIGHBOR_CHANGE, INDEX_MAC, NUMMACS,SMT_P208F } ,
58 { SMT_EVENT_MAC_PATH_CHANGE, INDEX_MAC, NUMMACS,SMT_P2090 } ,
59
60 { SMT_COND_PORT_LER, INDEX_PORT,NUMPHYS,SMT_P4050 } ,
61 { SMT_COND_PORT_EB_ERROR, INDEX_PORT,NUMPHYS,SMT_P4052 } ,
62 { SMT_EVENT_PORT_CONNECTION, INDEX_PORT,NUMPHYS,SMT_P4051 } ,
63 { SMT_EVENT_PORT_PATH_CHANGE, INDEX_PORT,NUMPHYS,SMT_P4053 } ,
64} ;
65
66#define MAX_INIT_EVC ARRAY_SIZE(evc_inits)
67
68void smt_init_evc(struct s_smc *smc)
69{
70 struct s_srf_evc *evc ;
71 const struct evc_init *init ;
72 unsigned int i ;
73 int index ;
74 int offset ;
75
76 static u_char fail_safe = FALSE ;
77
78 memset((char *)smc->evcs,0,sizeof(smc->evcs)) ;
79
80 evc = smc->evcs ;
81 init = evc_inits ;
82
83 for (i = 0 ; i < MAX_INIT_EVC ; i++) {
84 for (index = 0 ; index < init->n ; index++) {
85 evc->evc_code = init->code ;
86 evc->evc_para = init->para ;
87 evc->evc_index = init->index + index ;
88#ifndef DEBUG
89 evc->evc_multiple = &fail_safe ;
90 evc->evc_cond_state = &fail_safe ;
91#endif
92 evc++ ;
93 }
94 init++ ;
95 }
96
97 if ((unsigned int) (evc - smc->evcs) > MAX_EVCS) {
98 SMT_PANIC(smc,SMT_E0127, SMT_E0127_MSG) ;
99 }
100
101
102
103
104 smc->evcs[0].evc_cond_state = &smc->mib.fddiSMTPeerWrapFlag ;
105 smc->evcs[1].evc_cond_state =
106 &smc->mib.m[MAC0].fddiMACDuplicateAddressCond ;
107 smc->evcs[2].evc_cond_state =
108 &smc->mib.m[MAC0].fddiMACFrameErrorFlag ;
109 smc->evcs[3].evc_cond_state =
110 &smc->mib.m[MAC0].fddiMACNotCopiedFlag ;
111
112
113
114
115 smc->evcs[4].evc_multiple = &smc->mib.m[MAC0].fddiMACMultiple_N ;
116 smc->evcs[5].evc_multiple = &smc->mib.m[MAC0].fddiMACMultiple_P ;
117
118 offset = 6 ;
119 for (i = 0 ; i < NUMPHYS ; i++) {
120
121
122
123 smc->evcs[offset + 0*NUMPHYS].evc_cond_state =
124 &smc->mib.p[i].fddiPORTLerFlag ;
125 smc->evcs[offset + 1*NUMPHYS].evc_cond_state =
126 &smc->mib.p[i].fddiPORTEB_Condition ;
127
128
129
130
131 smc->evcs[offset + 2*NUMPHYS].evc_multiple =
132 &smc->mib.p[i].fddiPORTMultiple_U ;
133 smc->evcs[offset + 3*NUMPHYS].evc_multiple =
134 &smc->mib.p[i].fddiPORTMultiple_P ;
135 offset++ ;
136 }
137#ifdef DEBUG
138 for (i = 0, evc = smc->evcs ; i < MAX_EVCS ; i++, evc++) {
139 if (SMT_IS_CONDITION(evc->evc_code)) {
140 if (!evc->evc_cond_state) {
141 SMT_PANIC(smc,SMT_E0128, SMT_E0128_MSG) ;
142 }
143 evc->evc_multiple = &fail_safe ;
144 }
145 else {
146 if (!evc->evc_multiple) {
147 SMT_PANIC(smc,SMT_E0129, SMT_E0129_MSG) ;
148 }
149 evc->evc_cond_state = &fail_safe ;
150 }
151 }
152#endif
153 smc->srf.TSR = smt_get_time() ;
154 smc->srf.sr_state = SR0_WAIT ;
155}
156
157static struct s_srf_evc *smt_get_evc(struct s_smc *smc, int code, int index)
158{
159 unsigned int i ;
160 struct s_srf_evc *evc ;
161
162 for (i = 0, evc = smc->evcs ; i < MAX_EVCS ; i++, evc++) {
163 if (evc->evc_code == code && evc->evc_index == index)
164 return evc;
165 }
166 return NULL;
167}
168
169#define THRESHOLD_2 (2*TICKS_PER_SECOND)
170#define THRESHOLD_32 (32*TICKS_PER_SECOND)
171
172static const char * const srf_names[] = {
173 "None","MACPathChangeEvent", "MACNeighborChangeEvent",
174 "PORTPathChangeEvent", "PORTUndesiredConnectionAttemptEvent",
175 "SMTPeerWrapCondition", "SMTHoldCondition",
176 "MACFrameErrorCondition", "MACDuplicateAddressCondition",
177 "MACNotCopiedCondition", "PORTEBErrorCondition",
178 "PORTLerCondition"
179} ;
180
181void smt_srf_event(struct s_smc *smc, int code, int index, int cond)
182{
183 struct s_srf_evc *evc ;
184 int cond_asserted = 0 ;
185 int cond_deasserted = 0 ;
186 int event_occurred = 0 ;
187 int tsr ;
188 int T_Limit = 2*TICKS_PER_SECOND ;
189
190 if (code == SMT_COND_MAC_DUP_ADDR && cond) {
191 RS_SET(smc,RS_DUPADDR) ;
192 }
193
194 if (code) {
195 DB_SMT("SRF: %s index %d", srf_names[code], index);
196
197 if (!(evc = smt_get_evc(smc,code,index))) {
198 DB_SMT("SRF : smt_get_evc() failed");
199 return ;
200 }
201
202
203
204 if (SMT_IS_CONDITION(code)) {
205 if (*evc->evc_cond_state == cond)
206 return ;
207 }
208
209
210
211
212 smt_set_timestamp(smc,smc->mib.fddiSMTTransitionTimeStamp) ;
213 if (SMT_IS_CONDITION(code)) {
214 DB_SMT("SRF: condition is %s", cond ? "ON" : "OFF");
215 if (cond) {
216 *evc->evc_cond_state = TRUE ;
217 evc->evc_rep_required = TRUE ;
218 smc->srf.any_report = TRUE ;
219 cond_asserted = TRUE ;
220 }
221 else {
222 *evc->evc_cond_state = FALSE ;
223 cond_deasserted = TRUE ;
224 }
225 }
226 else {
227 if (evc->evc_rep_required) {
228 *evc->evc_multiple = TRUE ;
229 }
230 else {
231 evc->evc_rep_required = TRUE ;
232 *evc->evc_multiple = FALSE ;
233 }
234 smc->srf.any_report = TRUE ;
235 event_occurred = TRUE ;
236 }
237#ifdef FDDI_MIB
238 snmp_srf_event(smc,evc) ;
239#endif
240 }
241 tsr = smt_get_time() - smc->srf.TSR ;
242
243 switch (smc->srf.sr_state) {
244 case SR0_WAIT :
245
246 if (cond_asserted && tsr < T_Limit) {
247 smc->srf.SRThreshold = THRESHOLD_2 ;
248 smc->srf.sr_state = SR1_HOLDOFF ;
249 break ;
250 }
251
252 if (cond_deasserted && tsr < T_Limit) {
253 smc->srf.sr_state = SR1_HOLDOFF ;
254 break ;
255 }
256
257 if (event_occurred && tsr < T_Limit) {
258 smc->srf.sr_state = SR1_HOLDOFF ;
259 break ;
260 }
261
262 if (cond_asserted && tsr >= T_Limit) {
263 smc->srf.SRThreshold = THRESHOLD_2 ;
264 smc->srf.TSR = smt_get_time() ;
265 smt_send_srf(smc) ;
266 break ;
267 }
268
269 if (cond_deasserted && tsr >= T_Limit) {
270 smc->srf.TSR = smt_get_time() ;
271 smt_send_srf(smc) ;
272 break ;
273 }
274
275 if (event_occurred && tsr >= T_Limit) {
276 smc->srf.TSR = smt_get_time() ;
277 smt_send_srf(smc) ;
278 break ;
279 }
280
281 if (smc->srf.any_report && (u_long) tsr >=
282 smc->srf.SRThreshold) {
283 smc->srf.SRThreshold *= 2 ;
284 if (smc->srf.SRThreshold > THRESHOLD_32)
285 smc->srf.SRThreshold = THRESHOLD_32 ;
286 smc->srf.TSR = smt_get_time() ;
287 smt_send_srf(smc) ;
288 break ;
289 }
290
291 if (!smc->mib.fddiSMTStatRptPolicy) {
292 smc->srf.sr_state = SR2_DISABLED ;
293 break ;
294 }
295 break ;
296 case SR1_HOLDOFF :
297
298 if (tsr >= T_Limit) {
299 smc->srf.sr_state = SR0_WAIT ;
300 smc->srf.TSR = smt_get_time() ;
301 smt_send_srf(smc) ;
302 break ;
303 }
304
305 if (cond_asserted) {
306 smc->srf.SRThreshold = THRESHOLD_2 ;
307 }
308
309
310
311
312 if (!smc->mib.fddiSMTStatRptPolicy) {
313 smc->srf.sr_state = SR2_DISABLED ;
314 break ;
315 }
316 break ;
317 case SR2_DISABLED :
318 if (smc->mib.fddiSMTStatRptPolicy) {
319 smc->srf.sr_state = SR0_WAIT ;
320 smc->srf.TSR = smt_get_time() ;
321 smc->srf.SRThreshold = THRESHOLD_2 ;
322 clear_all_rep(smc) ;
323 break ;
324 }
325 break ;
326 }
327}
328
329static void clear_all_rep(struct s_smc *smc)
330{
331 struct s_srf_evc *evc ;
332 unsigned int i ;
333
334 for (i = 0, evc = smc->evcs ; i < MAX_EVCS ; i++, evc++) {
335 evc->evc_rep_required = FALSE ;
336 if (SMT_IS_CONDITION(evc->evc_code))
337 *evc->evc_cond_state = FALSE ;
338 }
339 smc->srf.any_report = FALSE ;
340}
341
342static void clear_reported(struct s_smc *smc)
343{
344 struct s_srf_evc *evc ;
345 unsigned int i ;
346
347 smc->srf.any_report = FALSE ;
348 for (i = 0, evc = smc->evcs ; i < MAX_EVCS ; i++, evc++) {
349 if (SMT_IS_CONDITION(evc->evc_code)) {
350 if (*evc->evc_cond_state == FALSE)
351 evc->evc_rep_required = FALSE ;
352 else
353 smc->srf.any_report = TRUE ;
354 }
355 else {
356 evc->evc_rep_required = FALSE ;
357 *evc->evc_multiple = FALSE ;
358 }
359 }
360}
361
362
363
364
365static void smt_send_srf(struct s_smc *smc)
366{
367
368 struct smt_header *smt ;
369 struct s_srf_evc *evc ;
370 SK_LOC_DECL(struct s_pcon,pcon) ;
371 SMbuf *mb ;
372 unsigned int i ;
373
374 static const struct fddi_addr SMT_SRF_DA = {
375 { 0x80, 0x01, 0x43, 0x00, 0x80, 0x08 }
376 } ;
377
378
379
380
381 if (!smc->r.sm_ma_avail)
382 return ;
383 if (!(mb = smt_build_frame(smc,SMT_SRF,SMT_ANNOUNCE,0)))
384 return ;
385
386 RS_SET(smc,RS_SOFTERROR) ;
387
388 smt = smtod(mb, struct smt_header *) ;
389 smt->smt_dest = SMT_SRF_DA ;
390
391
392
393
394 pcon.pc_len = SMT_MAX_INFO_LEN ;
395 pcon.pc_err = 0 ;
396 pcon.pc_badset = 0 ;
397 pcon.pc_p = (void *) (smt + 1) ;
398
399 smt_add_para(smc,&pcon,(u_short) SMT_P1033,0,0) ;
400 smt_add_para(smc,&pcon,(u_short) SMT_P1034,0,0) ;
401
402 for (i = 0, evc = smc->evcs ; i < MAX_EVCS ; i++, evc++) {
403 if (evc->evc_rep_required) {
404 smt_add_para(smc,&pcon,evc->evc_para,
405 (int)evc->evc_index,0) ;
406 }
407 }
408 smt->smt_len = SMT_MAX_INFO_LEN - pcon.pc_len ;
409 mb->sm_len = smt->smt_len + sizeof(struct smt_header) ;
410
411 DB_SMT("SRF: sending SRF at %p, len %d", smt, mb->sm_len);
412 DB_SMT("SRF: state SR%d Threshold %lu",
413 smc->srf.sr_state, smc->srf.SRThreshold / TICKS_PER_SECOND);
414#ifdef DEBUG
415 dump_smt(smc,smt,"SRF Send") ;
416#endif
417 smt_send_frame(smc,mb,FC_SMT_INFO,0) ;
418 clear_reported(smc) ;
419}
420
421#endif
422#endif
423
424
