netnatm/saal/saal_sscfu.c

68 static void sscfu_unqueue(struct sscfu *sscf);
81 	struct sscfu *sscf;
83 	MEMZALLOC(sscf, struct sscfu *, sizeof(struct sscfu));
84 	if (sscf == NULL)
87 	sscf->funcs = funcs;
88 	sscf->aarg = a;
89 	sscf->state = SSCFU_RELEASED;
90 	sscf->inhand = 0;
91 	SIGQ_INIT(&sscf->sigs);
92 	sscf->debug = 0;
94 	return (sscf);
101 sscfu_reset(struct sscfu *sscf)
103 	sscf->state = SSCFU_RELEASED;
104 	sscf->inhand = 0;
105 	SIGQ_CLEAR(&sscf->sigs);
112 sscfu_destroy(struct sscfu *sscf)
114 	SIGQ_CLEAR(&sscf->sigs);
115 	MEMFREE(sscf);
119 sscfu_getstate(const struct sscfu *sscf)
121 	return (sscf->state);
175 set_state(struct sscfu *sscf, enum sscfu_state state)
177 	VERBOSE(sscf, SSCFU_DBG_STATE, (sscf, sscf->aarg,
179 	    sscf_states[sscf->state], sscf_states[state]));
180 	sscf->state = state;
189 sscfu_input(struct sscfu *sscf, enum sscop_aasig sig,
192 	sscf->inhand = 1;
194 	VERBOSE(sscf, SSCFU_DBG_LSIG, (sscf, sscf->aarg,
195 	    "SSCF got signal %d. in state %s", sig, sscf_states[sscf->state]));
201 		switch (sscf->state) {
209 			set_state(sscf, SSCFU_RELEASED);
210 			AA_SIG(sscf, SAAL_RELEASE_indication, m);
219 			set_state(sscf, SSCFU_RELEASED);
220 			AA_SIG(sscf, SAAL_RELEASE_indication, m);
224 			set_state(sscf, SSCFU_RELEASED);
225 			AA_SIG(sscf, SAAL_RELEASE_indication, m);
232 		switch (sscf->state) {
235 			set_state(sscf, SSCFU_ESTABLISHED);
236 			SSCOP_AASIG(sscf, SSCOP_ESTABLISH_response, NULL, 1);
237 			AA_SIG(sscf, SAAL_ESTABLISH_indication, m);
252 		switch (sscf->state) {
260 			set_state(sscf, SSCFU_ESTABLISHED);
261 			AA_SIG(sscf, SAAL_ESTABLISH_confirm, m);
275 		switch (sscf->state) {
282 			set_state(sscf, SSCFU_RELEASED);
283 			AA_SIG(sscf, SAAL_RELEASE_confirm, NULL);
294 		sscf->funcs->window(sscf, sscf->aarg, 1);
295 		switch (sscf->state) {
304 			AA_SIG(sscf, SAAL_DATA_indication, m);
315 		switch (sscf->state) {
323 			SSCOP_AASIG(sscf, SSCOP_RECOVER_response, NULL, 0);
324 			AA_SIG(sscf, SAAL_ESTABLISH_indication, NULL);
334 		switch (sscf->state) {
344 			SSCOP_AASIG(sscf, SSCOP_RESYNC_response, NULL, 0);
345 			AA_SIG(sscf, SAAL_ESTABLISH_indication, m);
357 		switch (sscf->state) {
365 			set_state(sscf, SSCFU_ESTABLISHED);
366 			AA_SIG(sscf, SAAL_ESTABLISH_confirm, NULL);
373 		AA_SIG(sscf, SAAL_UDATA_indication, m);
398 	sscfu_unqueue(sscf);
402 	VERBOSE(sscf, SSCFU_DBG_ERR, (sscf, sscf->aarg,
403 	    "bad signal %d. in state %s", sig, sscf_states[sscf->state]));
404 	sscfu_unqueue(sscf);
412 sscfu_dosig(struct sscfu *sscf, enum saal_sig sig, struct SSCFU_MBUF_T *m)
414 	VERBOSE(sscf, SSCFU_DBG_EXEC, (sscf, sscf->aarg,
416 	    sscf_sigs[sig], sscf_states[sscf->state]));
422 		switch (sscf->state) {
425 			set_state(sscf, SSCFU_AWAITING_ESTABLISH);
426 			SSCOP_AASIG(sscf, SSCOP_ESTABLISH_request, m, 1);
435 			set_state(sscf, SSCFU_AWAITING_ESTABLISH);
436 			SSCOP_AASIG(sscf, SSCOP_ESTABLISH_request, m, 1);
440 			set_state(sscf, SSCFU_RESYNC);
441 			SSCOP_AASIG(sscf, SSCOP_RESYNC_request, m, 0);
453 		switch(sscf->state) {
458 			AA_SIG(sscf, SAAL_RELEASE_confirm, NULL);
462 			set_state(sscf, SSCFU_AWAITING_RELEASE);
463 			SSCOP_AASIG(sscf, SSCOP_RELEASE_request, m, 0);
472 			set_state(sscf, SSCFU_AWAITING_RELEASE);
473 			SSCOP_AASIG(sscf, SSCOP_RELEASE_request, m, 0);
477 			set_state(sscf, SSCFU_AWAITING_RELEASE);
478 			SSCOP_AASIG(sscf, SSCOP_RELEASE_request, m, 0);
485 		switch (sscf->state) {
494 			SSCOP_AASIG(sscf, SSCOP_DATA_request, m, 0);
505 		SSCOP_AASIG(sscf, SSCOP_UDATA_request, m, 0);
520 	VERBOSE(sscf, SSCFU_DBG_ERR, (sscf, sscf->aarg,
522 	    sscf_states[sscf->state]));
529 sscfu_saalsig(struct sscfu *sscf, enum saal_sig sig, struct SSCFU_MBUF_T *m)
533 	if (sscf->inhand) {
534 		VERBOSE(sscf, SSCFU_DBG_EXEC, (sscf, sscf->aarg,
536 		    sscf_sigs[sig], sscf_states[sscf->state]));
542 		SIGQ_APPEND(&sscf->sigs, s);
546 	sscf->inhand = 1;
547 	sscfu_dosig(sscf, sig, m);
548 	sscfu_unqueue(sscf);
556 sscfu_unqueue(struct sscfu *sscf)
560 	while ((s = SIGQ_GET(&sscf->sigs)) != NULL) {
561 		sscfu_dosig(sscf, s->sig, s->m);
564 	sscf->inhand = 0;
568 sscfu_setdebug(struct sscfu *sscf, u_int n)
570 	sscf->debug = n;
574 sscfu_getdebug(const struct sscfu *sscf)
576 	return (sscf->debug);