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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * (C)Copyright 1998,1999 SysKonnect, | |
4 | * a business unit of Schneider & Koch & Co. Datensysteme GmbH. | |
5 | * | |
6 | * See the file "skfddi.c" for further information. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * The information in this file is provided "AS IS" without warranty. | |
14 | * | |
15 | ******************************************************************************/ | |
16 | ||
17 | /* | |
18 | SMT RMT | |
19 | Ring Management | |
20 | */ | |
21 | ||
22 | /* | |
23 | * Hardware independent state machine implemantation | |
24 | * The following external SMT functions are referenced : | |
25 | * | |
26 | * queue_event() | |
27 | * smt_timer_start() | |
28 | * smt_timer_stop() | |
29 | * | |
30 | * The following external HW dependent functions are referenced : | |
31 | * sm_ma_control() | |
32 | * sm_mac_check_beacon_claim() | |
33 | * | |
34 | * The following HW dependent events are required : | |
35 | * RM_RING_OP | |
36 | * RM_RING_NON_OP | |
37 | * RM_MY_BEACON | |
38 | * RM_OTHER_BEACON | |
39 | * RM_MY_CLAIM | |
40 | * RM_TRT_EXP | |
41 | * RM_VALID_CLAIM | |
42 | * | |
43 | */ | |
44 | ||
45 | #include "h/types.h" | |
46 | #include "h/fddi.h" | |
47 | #include "h/smc.h" | |
48 | ||
49 | #define KERNEL | |
50 | #include "h/smtstate.h" | |
51 | ||
52 | #ifndef lint | |
53 | static const char ID_sccs[] = "@(#)rmt.c 2.13 99/07/02 (C) SK " ; | |
54 | #endif | |
55 | ||
56 | /* | |
57 | * FSM Macros | |
58 | */ | |
59 | #define AFLAG 0x10 | |
60 | #define GO_STATE(x) (smc->mib.m[MAC0].fddiMACRMTState = (x)|AFLAG) | |
61 | #define ACTIONS_DONE() (smc->mib.m[MAC0].fddiMACRMTState &= ~AFLAG) | |
62 | #define ACTIONS(x) (x|AFLAG) | |
63 | ||
64 | #define RM0_ISOLATED 0 | |
65 | #define RM1_NON_OP 1 /* not operational */ | |
66 | #define RM2_RING_OP 2 /* ring operational */ | |
67 | #define RM3_DETECT 3 /* detect dupl addresses */ | |
68 | #define RM4_NON_OP_DUP 4 /* dupl. addr detected */ | |
69 | #define RM5_RING_OP_DUP 5 /* ring oper. with dupl. addr */ | |
70 | #define RM6_DIRECTED 6 /* sending directed beacons */ | |
71 | #define RM7_TRACE 7 /* trace initiated */ | |
72 | ||
73 | #ifdef DEBUG | |
74 | /* | |
75 | * symbolic state names | |
76 | */ | |
77 | static const char * const rmt_states[] = { | |
78 | "RM0_ISOLATED","RM1_NON_OP","RM2_RING_OP","RM3_DETECT", | |
79 | "RM4_NON_OP_DUP","RM5_RING_OP_DUP","RM6_DIRECTED", | |
80 | "RM7_TRACE" | |
81 | } ; | |
82 | ||
83 | /* | |
84 | * symbolic event names | |
85 | */ | |
86 | static const char * const rmt_events[] = { | |
87 | "NONE","RM_RING_OP","RM_RING_NON_OP","RM_MY_BEACON", | |
88 | "RM_OTHER_BEACON","RM_MY_CLAIM","RM_TRT_EXP","RM_VALID_CLAIM", | |
89 | "RM_JOIN","RM_LOOP","RM_DUP_ADDR","RM_ENABLE_FLAG", | |
90 | "RM_TIMEOUT_NON_OP","RM_TIMEOUT_T_STUCK", | |
91 | "RM_TIMEOUT_ANNOUNCE","RM_TIMEOUT_T_DIRECT", | |
92 | "RM_TIMEOUT_D_MAX","RM_TIMEOUT_POLL","RM_TX_STATE_CHANGE" | |
93 | } ; | |
94 | #endif | |
95 | ||
96 | /* | |
97 | * Globals | |
98 | * in struct s_rmt | |
99 | */ | |
100 | ||
101 | ||
102 | /* | |
103 | * function declarations | |
104 | */ | |
105 | static void rmt_fsm(struct s_smc *smc, int cmd); | |
106 | static void start_rmt_timer0(struct s_smc *smc, u_long value, int event); | |
107 | static void start_rmt_timer1(struct s_smc *smc, u_long value, int event); | |
108 | static void start_rmt_timer2(struct s_smc *smc, u_long value, int event); | |
109 | static void stop_rmt_timer0(struct s_smc *smc); | |
110 | static void stop_rmt_timer1(struct s_smc *smc); | |
111 | static void stop_rmt_timer2(struct s_smc *smc); | |
112 | static void rmt_dup_actions(struct s_smc *smc); | |
113 | static void rmt_reinsert_actions(struct s_smc *smc); | |
114 | static void rmt_leave_actions(struct s_smc *smc); | |
115 | static void rmt_new_dup_actions(struct s_smc *smc); | |
116 | ||
117 | #ifndef SUPERNET_3 | |
118 | extern void restart_trt_for_dbcn() ; | |
119 | #endif /*SUPERNET_3*/ | |
120 | ||
121 | /* | |
122 | init RMT state machine | |
123 | clear all RMT vars and flags | |
124 | */ | |
125 | void rmt_init(struct s_smc *smc) | |
126 | { | |
127 | smc->mib.m[MAC0].fddiMACRMTState = ACTIONS(RM0_ISOLATED) ; | |
128 | smc->r.dup_addr_test = DA_NONE ; | |
129 | smc->r.da_flag = 0 ; | |
130 | smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = FALSE ; | |
131 | smc->r.sm_ma_avail = FALSE ; | |
132 | smc->r.loop_avail = 0 ; | |
133 | smc->r.bn_flag = 0 ; | |
134 | smc->r.jm_flag = 0 ; | |
135 | smc->r.no_flag = TRUE ; | |
136 | } | |
137 | ||
138 | /* | |
139 | RMT state machine | |
140 | called by dispatcher | |
141 | ||
142 | do | |
143 | display state change | |
144 | process event | |
145 | until SM is stable | |
146 | */ | |
147 | void rmt(struct s_smc *smc, int event) | |
148 | { | |
149 | int state ; | |
150 | ||
151 | do { | |
152 | DB_RMT("RMT : state %s%s", | |
153 | (smc->mib.m[MAC0].fddiMACRMTState & AFLAG) ? "ACTIONS " : "", | |
154 | rmt_states[smc->mib.m[MAC0].fddiMACRMTState & ~AFLAG]) ; | |
155 | DB_RMT(" event %s\n",rmt_events[event],0) ; | |
156 | state = smc->mib.m[MAC0].fddiMACRMTState ; | |
157 | rmt_fsm(smc,event) ; | |
158 | event = 0 ; | |
159 | } while (state != smc->mib.m[MAC0].fddiMACRMTState) ; | |
160 | rmt_state_change(smc,(int)smc->mib.m[MAC0].fddiMACRMTState) ; | |
161 | } | |
162 | ||
163 | /* | |
164 | process RMT event | |
165 | */ | |
166 | static void rmt_fsm(struct s_smc *smc, int cmd) | |
167 | { | |
168 | /* | |
169 | * RM00-RM70 : from all states | |
170 | */ | |
171 | if (!smc->r.rm_join && !smc->r.rm_loop && | |
172 | smc->mib.m[MAC0].fddiMACRMTState != ACTIONS(RM0_ISOLATED) && | |
173 | smc->mib.m[MAC0].fddiMACRMTState != RM0_ISOLATED) { | |
174 | RS_SET(smc,RS_NORINGOP) ; | |
175 | rmt_indication(smc,0) ; | |
176 | GO_STATE(RM0_ISOLATED) ; | |
177 | return ; | |
178 | } | |
179 | ||
180 | switch(smc->mib.m[MAC0].fddiMACRMTState) { | |
181 | case ACTIONS(RM0_ISOLATED) : | |
182 | stop_rmt_timer0(smc) ; | |
183 | stop_rmt_timer1(smc) ; | |
184 | stop_rmt_timer2(smc) ; | |
185 | ||
186 | /* | |
187 | * Disable MAC. | |
188 | */ | |
189 | sm_ma_control(smc,MA_OFFLINE) ; | |
190 | smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = FALSE ; | |
191 | smc->r.loop_avail = FALSE ; | |
192 | smc->r.sm_ma_avail = FALSE ; | |
193 | smc->r.no_flag = TRUE ; | |
194 | DB_RMTN(1,"RMT : ISOLATED\n",0,0) ; | |
195 | ACTIONS_DONE() ; | |
196 | break ; | |
197 | case RM0_ISOLATED : | |
198 | /*RM01*/ | |
199 | if (smc->r.rm_join || smc->r.rm_loop) { | |
200 | /* | |
201 | * According to the standard the MAC must be reset | |
202 | * here. The FORMAC will be initialized and Claim | |
203 | * and Beacon Frames will be uploaded to the MAC. | |
204 | * So any change of Treq will take effect NOW. | |
205 | */ | |
206 | sm_ma_control(smc,MA_RESET) ; | |
207 | GO_STATE(RM1_NON_OP) ; | |
208 | break ; | |
209 | } | |
210 | break ; | |
211 | case ACTIONS(RM1_NON_OP) : | |
212 | start_rmt_timer0(smc,smc->s.rmt_t_non_op,RM_TIMEOUT_NON_OP) ; | |
213 | stop_rmt_timer1(smc) ; | |
214 | stop_rmt_timer2(smc) ; | |
215 | sm_ma_control(smc,MA_BEACON) ; | |
216 | DB_RMTN(1,"RMT : RING DOWN\n",0,0) ; | |
217 | RS_SET(smc,RS_NORINGOP) ; | |
218 | smc->r.sm_ma_avail = FALSE ; | |
219 | rmt_indication(smc,0) ; | |
220 | ACTIONS_DONE() ; | |
221 | break ; | |
222 | case RM1_NON_OP : | |
223 | /*RM12*/ | |
224 | if (cmd == RM_RING_OP) { | |
225 | RS_SET(smc,RS_RINGOPCHANGE) ; | |
226 | GO_STATE(RM2_RING_OP) ; | |
227 | break ; | |
228 | } | |
229 | /*RM13*/ | |
230 | else if (cmd == RM_TIMEOUT_NON_OP) { | |
231 | smc->r.bn_flag = FALSE ; | |
232 | smc->r.no_flag = TRUE ; | |
233 | GO_STATE(RM3_DETECT) ; | |
234 | break ; | |
235 | } | |
236 | break ; | |
237 | case ACTIONS(RM2_RING_OP) : | |
238 | stop_rmt_timer0(smc) ; | |
239 | stop_rmt_timer1(smc) ; | |
240 | stop_rmt_timer2(smc) ; | |
241 | smc->r.no_flag = FALSE ; | |
242 | if (smc->r.rm_loop) | |
243 | smc->r.loop_avail = TRUE ; | |
244 | if (smc->r.rm_join) { | |
245 | smc->r.sm_ma_avail = TRUE ; | |
246 | if (smc->mib.m[MAC0].fddiMACMA_UnitdataEnable) | |
247 | smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = TRUE ; | |
248 | else | |
249 | smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = FALSE ; | |
250 | } | |
251 | DB_RMTN(1,"RMT : RING UP\n",0,0) ; | |
252 | RS_CLEAR(smc,RS_NORINGOP) ; | |
253 | RS_SET(smc,RS_RINGOPCHANGE) ; | |
254 | rmt_indication(smc,1) ; | |
255 | smt_stat_counter(smc,0) ; | |
256 | ACTIONS_DONE() ; | |
257 | break ; | |
258 | case RM2_RING_OP : | |
259 | /*RM21*/ | |
260 | if (cmd == RM_RING_NON_OP) { | |
261 | smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = FALSE ; | |
262 | smc->r.loop_avail = FALSE ; | |
263 | RS_SET(smc,RS_RINGOPCHANGE) ; | |
264 | GO_STATE(RM1_NON_OP) ; | |
265 | break ; | |
266 | } | |
267 | /*RM22a*/ | |
268 | else if (cmd == RM_ENABLE_FLAG) { | |
269 | if (smc->mib.m[MAC0].fddiMACMA_UnitdataEnable) | |
270 | smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = TRUE ; | |
271 | else | |
272 | smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = FALSE ; | |
273 | } | |
274 | /*RM25*/ | |
275 | else if (smc->r.dup_addr_test == DA_FAILED) { | |
276 | smc->mib.m[MAC0].fddiMACMA_UnitdataAvailable = FALSE ; | |
277 | smc->r.loop_avail = FALSE ; | |
278 | smc->r.da_flag = TRUE ; | |
279 | GO_STATE(RM5_RING_OP_DUP) ; | |
280 | break ; | |
281 | } | |
282 | break ; | |
283 | case ACTIONS(RM3_DETECT) : | |
284 | start_rmt_timer0(smc,smc->s.mac_d_max*2,RM_TIMEOUT_D_MAX) ; | |
285 | start_rmt_timer1(smc,smc->s.rmt_t_stuck,RM_TIMEOUT_T_STUCK) ; | |
286 | start_rmt_timer2(smc,smc->s.rmt_t_poll,RM_TIMEOUT_POLL) ; | |
287 | sm_mac_check_beacon_claim(smc) ; | |
288 | DB_RMTN(1,"RMT : RM3_DETECT\n",0,0) ; | |
289 | ACTIONS_DONE() ; | |
290 | break ; | |
291 | case RM3_DETECT : | |
292 | if (cmd == RM_TIMEOUT_POLL) { | |
293 | start_rmt_timer2(smc,smc->s.rmt_t_poll,RM_TIMEOUT_POLL); | |
294 | sm_mac_check_beacon_claim(smc) ; | |
295 | break ; | |
296 | } | |
297 | if (cmd == RM_TIMEOUT_D_MAX) { | |
298 | smc->r.timer0_exp = TRUE ; | |
299 | } | |
300 | /* | |
301 | *jd(22-Feb-1999) | |
302 | * We need a time ">= 2*mac_d_max" since we had finished | |
303 | * Claim or Beacon state. So we will restart timer0 at | |
304 | * every state change. | |
305 | */ | |
306 | if (cmd == RM_TX_STATE_CHANGE) { | |
307 | start_rmt_timer0(smc, | |
308 | smc->s.mac_d_max*2, | |
309 | RM_TIMEOUT_D_MAX) ; | |
310 | } | |
311 | /*RM32*/ | |
312 | if (cmd == RM_RING_OP) { | |
313 | GO_STATE(RM2_RING_OP) ; | |
314 | break ; | |
315 | } | |
316 | /*RM33a*/ | |
317 | else if ((cmd == RM_MY_BEACON || cmd == RM_OTHER_BEACON) | |
318 | && smc->r.bn_flag) { | |
319 | smc->r.bn_flag = FALSE ; | |
320 | } | |
321 | /*RM33b*/ | |
322 | else if (cmd == RM_TRT_EXP && !smc->r.bn_flag) { | |
323 | int tx ; | |
324 | /* | |
325 | * set bn_flag only if in state T4 or T5: | |
326 | * only if we're the beaconer should we start the | |
327 | * trace ! | |
328 | */ | |
329 | if ((tx = sm_mac_get_tx_state(smc)) == 4 || tx == 5) { | |
330 | DB_RMTN(2,"RMT : DETECT && TRT_EXPIRED && T4/T5\n",0,0); | |
331 | smc->r.bn_flag = TRUE ; | |
332 | /* | |
333 | * If one of the upstream stations beaconed | |
334 | * and the link to the upstream neighbor is | |
335 | * lost we need to restart the stuck timer to | |
336 | * check the "stuck beacon" condition. | |
337 | */ | |
338 | start_rmt_timer1(smc,smc->s.rmt_t_stuck, | |
339 | RM_TIMEOUT_T_STUCK) ; | |
340 | } | |
341 | /* | |
342 | * We do NOT need to clear smc->r.bn_flag in case of | |
343 | * not being in state T4 or T5, because the flag | |
344 | * must be cleared in order to get in this condition. | |
345 | */ | |
346 | ||
347 | DB_RMTN(2, | |
348 | "RMT : sm_mac_get_tx_state() = %d (bn_flag = %d)\n", | |
349 | tx,smc->r.bn_flag) ; | |
350 | } | |
351 | /*RM34a*/ | |
352 | else if (cmd == RM_MY_CLAIM && smc->r.timer0_exp) { | |
353 | rmt_new_dup_actions(smc) ; | |
354 | GO_STATE(RM4_NON_OP_DUP) ; | |
355 | break ; | |
356 | } | |
357 | /*RM34b*/ | |
358 | else if (cmd == RM_MY_BEACON && smc->r.timer0_exp) { | |
359 | rmt_new_dup_actions(smc) ; | |
360 | GO_STATE(RM4_NON_OP_DUP) ; | |
361 | break ; | |
362 | } | |
363 | /*RM34c*/ | |
364 | else if (cmd == RM_VALID_CLAIM) { | |
365 | rmt_new_dup_actions(smc) ; | |
366 | GO_STATE(RM4_NON_OP_DUP) ; | |
367 | break ; | |
368 | } | |
369 | /*RM36*/ | |
370 | else if (cmd == RM_TIMEOUT_T_STUCK && | |
371 | smc->r.rm_join && smc->r.bn_flag) { | |
372 | GO_STATE(RM6_DIRECTED) ; | |
373 | break ; | |
374 | } | |
375 | break ; | |
376 | case ACTIONS(RM4_NON_OP_DUP) : | |
377 | start_rmt_timer0(smc,smc->s.rmt_t_announce,RM_TIMEOUT_ANNOUNCE); | |
378 | start_rmt_timer1(smc,smc->s.rmt_t_stuck,RM_TIMEOUT_T_STUCK) ; | |
379 | start_rmt_timer2(smc,smc->s.rmt_t_poll,RM_TIMEOUT_POLL) ; | |
380 | sm_mac_check_beacon_claim(smc) ; | |
381 | DB_RMTN(1,"RMT : RM4_NON_OP_DUP\n",0,0) ; | |
382 | ACTIONS_DONE() ; | |
383 | break ; | |
384 | case RM4_NON_OP_DUP : | |
385 | if (cmd == RM_TIMEOUT_POLL) { | |
386 | start_rmt_timer2(smc,smc->s.rmt_t_poll,RM_TIMEOUT_POLL); | |
387 | sm_mac_check_beacon_claim(smc) ; | |
388 | break ; | |
389 | } | |
390 | /*RM41*/ | |
391 | if (!smc->r.da_flag) { | |
392 | GO_STATE(RM1_NON_OP) ; | |
393 | break ; | |
394 | } | |
395 | /*RM44a*/ | |
396 | else if ((cmd == RM_MY_BEACON || cmd == RM_OTHER_BEACON) && | |
397 | smc->r.bn_flag) { | |
398 | smc->r.bn_flag = FALSE ; | |
399 | } | |
400 | /*RM44b*/ | |
401 | else if (cmd == RM_TRT_EXP && !smc->r.bn_flag) { | |
402 | int tx ; | |
403 | /* | |
404 | * set bn_flag only if in state T4 or T5: | |
405 | * only if we're the beaconer should we start the | |
406 | * trace ! | |
407 | */ | |
408 | if ((tx = sm_mac_get_tx_state(smc)) == 4 || tx == 5) { | |
409 | DB_RMTN(2,"RMT : NOPDUP && TRT_EXPIRED && T4/T5\n",0,0); | |
410 | smc->r.bn_flag = TRUE ; | |
411 | /* | |
412 | * If one of the upstream stations beaconed | |
413 | * and the link to the upstream neighbor is | |
414 | * lost we need to restart the stuck timer to | |
415 | * check the "stuck beacon" condition. | |
416 | */ | |
417 | start_rmt_timer1(smc,smc->s.rmt_t_stuck, | |
418 | RM_TIMEOUT_T_STUCK) ; | |
419 | } | |
420 | /* | |
421 | * We do NOT need to clear smc->r.bn_flag in case of | |
422 | * not being in state T4 or T5, because the flag | |
423 | * must be cleared in order to get in this condition. | |
424 | */ | |
425 | ||
426 | DB_RMTN(2, | |
427 | "RMT : sm_mac_get_tx_state() = %d (bn_flag = %d)\n", | |
428 | tx,smc->r.bn_flag) ; | |
429 | } | |
430 | /*RM44c*/ | |
431 | else if (cmd == RM_TIMEOUT_ANNOUNCE && !smc->r.bn_flag) { | |
432 | rmt_dup_actions(smc) ; | |
433 | } | |
434 | /*RM45*/ | |
435 | else if (cmd == RM_RING_OP) { | |
436 | smc->r.no_flag = FALSE ; | |
437 | GO_STATE(RM5_RING_OP_DUP) ; | |
438 | break ; | |
439 | } | |
440 | /*RM46*/ | |
441 | else if (cmd == RM_TIMEOUT_T_STUCK && | |
442 | smc->r.rm_join && smc->r.bn_flag) { | |
443 | GO_STATE(RM6_DIRECTED) ; | |
444 | break ; | |
445 | } | |
446 | break ; | |
447 | case ACTIONS(RM5_RING_OP_DUP) : | |
448 | stop_rmt_timer0(smc) ; | |
449 | stop_rmt_timer1(smc) ; | |
450 | stop_rmt_timer2(smc) ; | |
451 | DB_RMTN(1,"RMT : RM5_RING_OP_DUP\n",0,0) ; | |
452 | ACTIONS_DONE() ; | |
453 | break; | |
454 | case RM5_RING_OP_DUP : | |
455 | /*RM52*/ | |
456 | if (smc->r.dup_addr_test == DA_PASSED) { | |
457 | smc->r.da_flag = FALSE ; | |
458 | GO_STATE(RM2_RING_OP) ; | |
459 | break ; | |
460 | } | |
461 | /*RM54*/ | |
462 | else if (cmd == RM_RING_NON_OP) { | |
463 | smc->r.jm_flag = FALSE ; | |
464 | smc->r.bn_flag = FALSE ; | |
465 | GO_STATE(RM4_NON_OP_DUP) ; | |
466 | break ; | |
467 | } | |
468 | break ; | |
469 | case ACTIONS(RM6_DIRECTED) : | |
470 | start_rmt_timer0(smc,smc->s.rmt_t_direct,RM_TIMEOUT_T_DIRECT) ; | |
471 | stop_rmt_timer1(smc) ; | |
472 | start_rmt_timer2(smc,smc->s.rmt_t_poll,RM_TIMEOUT_POLL) ; | |
473 | sm_ma_control(smc,MA_DIRECTED) ; | |
474 | RS_SET(smc,RS_BEACON) ; | |
475 | DB_RMTN(1,"RMT : RM6_DIRECTED\n",0,0) ; | |
476 | ACTIONS_DONE() ; | |
477 | break ; | |
478 | case RM6_DIRECTED : | |
479 | /*RM63*/ | |
480 | if (cmd == RM_TIMEOUT_POLL) { | |
481 | start_rmt_timer2(smc,smc->s.rmt_t_poll,RM_TIMEOUT_POLL); | |
482 | sm_mac_check_beacon_claim(smc) ; | |
483 | #ifndef SUPERNET_3 | |
484 | /* Because of problems with the Supernet II chip set | |
485 | * sending of Directed Beacon will stop after 165ms | |
486 | * therefore restart_trt_for_dbcn(smc) will be called | |
487 | * to prevent this. | |
488 | */ | |
489 | restart_trt_for_dbcn(smc) ; | |
490 | #endif /*SUPERNET_3*/ | |
491 | break ; | |
492 | } | |
493 | if ((cmd == RM_MY_BEACON || cmd == RM_OTHER_BEACON) && | |
494 | !smc->r.da_flag) { | |
495 | smc->r.bn_flag = FALSE ; | |
496 | GO_STATE(RM3_DETECT) ; | |
497 | break ; | |
498 | } | |
499 | /*RM64*/ | |
500 | else if ((cmd == RM_MY_BEACON || cmd == RM_OTHER_BEACON) && | |
501 | smc->r.da_flag) { | |
502 | smc->r.bn_flag = FALSE ; | |
503 | GO_STATE(RM4_NON_OP_DUP) ; | |
504 | break ; | |
505 | } | |
506 | /*RM67*/ | |
507 | else if (cmd == RM_TIMEOUT_T_DIRECT) { | |
508 | GO_STATE(RM7_TRACE) ; | |
509 | break ; | |
510 | } | |
511 | break ; | |
512 | case ACTIONS(RM7_TRACE) : | |
513 | stop_rmt_timer0(smc) ; | |
514 | stop_rmt_timer1(smc) ; | |
515 | stop_rmt_timer2(smc) ; | |
516 | smc->e.trace_prop |= ENTITY_BIT(ENTITY_MAC) ; | |
517 | queue_event(smc,EVENT_ECM,EC_TRACE_PROP) ; | |
518 | DB_RMTN(1,"RMT : RM7_TRACE\n",0,0) ; | |
519 | ACTIONS_DONE() ; | |
520 | break ; | |
521 | case RM7_TRACE : | |
522 | break ; | |
523 | default: | |
524 | SMT_PANIC(smc,SMT_E0122, SMT_E0122_MSG) ; | |
525 | break; | |
526 | } | |
527 | } | |
528 | ||
529 | /* | |
530 | * (jd) RMT duplicate address actions | |
531 | * leave the ring or reinsert just as configured | |
532 | */ | |
533 | static void rmt_dup_actions(struct s_smc *smc) | |
534 | { | |
535 | if (smc->r.jm_flag) { | |
536 | } | |
537 | else { | |
538 | if (smc->s.rmt_dup_mac_behavior) { | |
539 | SMT_ERR_LOG(smc,SMT_E0138, SMT_E0138_MSG) ; | |
540 | rmt_reinsert_actions(smc) ; | |
541 | } | |
542 | else { | |
543 | SMT_ERR_LOG(smc,SMT_E0135, SMT_E0135_MSG) ; | |
544 | rmt_leave_actions(smc) ; | |
545 | } | |
546 | } | |
547 | } | |
548 | ||
549 | /* | |
550 | * Reconnect to the Ring | |
551 | */ | |
552 | static void rmt_reinsert_actions(struct s_smc *smc) | |
553 | { | |
554 | queue_event(smc,EVENT_ECM,EC_DISCONNECT) ; | |
555 | queue_event(smc,EVENT_ECM,EC_CONNECT) ; | |
556 | } | |
557 | ||
558 | /* | |
559 | * duplicate address detected | |
560 | */ | |
561 | static void rmt_new_dup_actions(struct s_smc *smc) | |
562 | { | |
563 | smc->r.da_flag = TRUE ; | |
564 | smc->r.bn_flag = FALSE ; | |
565 | smc->r.jm_flag = FALSE ; | |
566 | /* | |
567 | * we have three options : change address, jam or leave | |
568 | * we leave the ring as default | |
569 | * Optionally it's possible to reinsert after leaving the Ring | |
570 | * but this will not conform with SMT Spec. | |
571 | */ | |
572 | if (smc->s.rmt_dup_mac_behavior) { | |
573 | SMT_ERR_LOG(smc,SMT_E0138, SMT_E0138_MSG) ; | |
574 | rmt_reinsert_actions(smc) ; | |
575 | } | |
576 | else { | |
577 | SMT_ERR_LOG(smc,SMT_E0135, SMT_E0135_MSG) ; | |
578 | rmt_leave_actions(smc) ; | |
579 | } | |
580 | } | |
581 | ||
582 | ||
583 | /* | |
584 | * leave the ring | |
585 | */ | |
586 | static void rmt_leave_actions(struct s_smc *smc) | |
587 | { | |
588 | queue_event(smc,EVENT_ECM,EC_DISCONNECT) ; | |
589 | /* | |
590 | * Note: Do NOT try again later. (with please reconnect) | |
591 | * The station must be left from the ring! | |
592 | */ | |
593 | } | |
594 | ||
595 | /* | |
596 | * SMT timer interface | |
597 | * start RMT timer 0 | |
598 | */ | |
599 | static void start_rmt_timer0(struct s_smc *smc, u_long value, int event) | |
600 | { | |
601 | smc->r.timer0_exp = FALSE ; /* clear timer event flag */ | |
602 | smt_timer_start(smc,&smc->r.rmt_timer0,value,EV_TOKEN(EVENT_RMT,event)); | |
603 | } | |
604 | ||
605 | /* | |
606 | * SMT timer interface | |
607 | * start RMT timer 1 | |
608 | */ | |
609 | static void start_rmt_timer1(struct s_smc *smc, u_long value, int event) | |
610 | { | |
611 | smc->r.timer1_exp = FALSE ; /* clear timer event flag */ | |
612 | smt_timer_start(smc,&smc->r.rmt_timer1,value,EV_TOKEN(EVENT_RMT,event)); | |
613 | } | |
614 | ||
615 | /* | |
616 | * SMT timer interface | |
617 | * start RMT timer 2 | |
618 | */ | |
619 | static void start_rmt_timer2(struct s_smc *smc, u_long value, int event) | |
620 | { | |
621 | smc->r.timer2_exp = FALSE ; /* clear timer event flag */ | |
622 | smt_timer_start(smc,&smc->r.rmt_timer2,value,EV_TOKEN(EVENT_RMT,event)); | |
623 | } | |
624 | ||
625 | /* | |
626 | * SMT timer interface | |
627 | * stop RMT timer 0 | |
628 | */ | |
629 | static void stop_rmt_timer0(struct s_smc *smc) | |
630 | { | |
631 | if (smc->r.rmt_timer0.tm_active) | |
632 | smt_timer_stop(smc,&smc->r.rmt_timer0) ; | |
633 | } | |
634 | ||
635 | /* | |
636 | * SMT timer interface | |
637 | * stop RMT timer 1 | |
638 | */ | |
639 | static void stop_rmt_timer1(struct s_smc *smc) | |
640 | { | |
641 | if (smc->r.rmt_timer1.tm_active) | |
642 | smt_timer_stop(smc,&smc->r.rmt_timer1) ; | |
643 | } | |
644 | ||
645 | /* | |
646 | * SMT timer interface | |
647 | * stop RMT timer 2 | |
648 | */ | |
649 | static void stop_rmt_timer2(struct s_smc *smc) | |
650 | { | |
651 | if (smc->r.rmt_timer2.tm_active) | |
652 | smt_timer_stop(smc,&smc->r.rmt_timer2) ; | |
653 | } | |
654 |