120 	struct gptp_sync_rcv_state *state;  in gptp_set_md_sync_receive()  local
128 	state = &GPTP_PORT_STATE(port)->sync_rcv;  in gptp_set_md_sync_receive()
129 	if (!state->rcvd_sync_ptr || !state->rcvd_follow_up_ptr) {  in gptp_set_md_sync_receive()
135 	sync_hdr = GPTP_HDR(state->rcvd_sync_ptr);  in gptp_set_md_sync_receive()
136 	fup_hdr = GPTP_HDR(state->rcvd_follow_up_ptr);  in gptp_set_md_sync_receive()
137 	fup = GPTP_FOLLOW_UP(state->rcvd_follow_up_ptr);  in gptp_set_md_sync_receive()
138 	sync_ts = &state->rcvd_sync_ptr->timestamp;  in gptp_set_md_sync_receive()
183 	struct gptp_pdelay_req_state *state;  in gptp_md_pdelay_reset()  local
188 	state = &GPTP_PORT_STATE(port)->pdelay_req;  in gptp_md_pdelay_reset()
191 	if (state->lost_responses < port_ds->allowed_lost_responses) {  in gptp_md_pdelay_reset()
192 		state->lost_responses += 1U;  in gptp_md_pdelay_reset()
196 		state->init_pdelay_compute = true;  in gptp_md_pdelay_reset()
202 	struct gptp_pdelay_req_state *state;  in gptp_md_pdelay_check_multiple_resp()  local
206 	state = &GPTP_PORT_STATE(port)->pdelay_req;  in gptp_md_pdelay_check_multiple_resp()
209 	if ((state->rcvd_pdelay_resp > 1) ||  in gptp_md_pdelay_check_multiple_resp()
210 			(state->rcvd_pdelay_follow_up > 1)) {  in gptp_md_pdelay_check_multiple_resp()
213 			 state->rcvd_pdelay_resp,  in gptp_md_pdelay_check_multiple_resp()
214 			 state->rcvd_pdelay_follow_up);  in gptp_md_pdelay_check_multiple_resp()
215 		state->multiple_resp_count++;  in gptp_md_pdelay_check_multiple_resp()
217 		state->multiple_resp_count = 0U;  in gptp_md_pdelay_check_multiple_resp()
220 	if (state->multiple_resp_count >= 3U) {  in gptp_md_pdelay_check_multiple_resp()
221 		state->multiple_resp_count = 0U;  in gptp_md_pdelay_check_multiple_resp()
222 		k_timer_stop(&state->pdelay_timer);  in gptp_md_pdelay_check_multiple_resp()
223 		state->pdelay_timer_expired = false;  in gptp_md_pdelay_check_multiple_resp()
229 		k_timer_start(&state->pdelay_timer, K_MSEC(duration),  in gptp_md_pdelay_check_multiple_resp()
232 		state->state = GPTP_PDELAY_REQ_SEND_REQ;  in gptp_md_pdelay_check_multiple_resp()
241 	struct gptp_pdelay_req_state *state;  in gptp_md_compute_pdelay_rate_ratio()  local
247 	state = &GPTP_PORT_STATE(port)->pdelay_req;  in gptp_md_compute_pdelay_rate_ratio()
251 	pkt = state->rcvd_pdelay_resp_ptr;  in gptp_md_compute_pdelay_rate_ratio()
258 	pkt = state->rcvd_pdelay_follow_up_ptr;  in gptp_md_compute_pdelay_rate_ratio()
271 	if (state->init_pdelay_compute) {  in gptp_md_compute_pdelay_rate_ratio()
272 		state->init_pdelay_compute = false;  in gptp_md_compute_pdelay_rate_ratio()
274 		state->ini_resp_ingress_tstamp = ingress_tstamp;  in gptp_md_compute_pdelay_rate_ratio()
275 		state->ini_resp_evt_tstamp = resp_evt_tstamp;  in gptp_md_compute_pdelay_rate_ratio()
279 		state->neighbor_rate_ratio_valid = false;  in gptp_md_compute_pdelay_rate_ratio()
281 		if (resp_evt_tstamp == state->ini_resp_evt_tstamp) {  in gptp_md_compute_pdelay_rate_ratio()
282 			state->neighbor_rate_ratio_valid = false;  in gptp_md_compute_pdelay_rate_ratio()
286 				(resp_evt_tstamp - state->ini_resp_evt_tstamp);  in gptp_md_compute_pdelay_rate_ratio()
289 				 state->ini_resp_ingress_tstamp);  in gptp_md_compute_pdelay_rate_ratio()
293 			state->ini_resp_ingress_tstamp = ingress_tstamp;  in gptp_md_compute_pdelay_rate_ratio()
294 			state->ini_resp_evt_tstamp = resp_evt_tstamp;  in gptp_md_compute_pdelay_rate_ratio()
295 			state->neighbor_rate_ratio_valid = true;  in gptp_md_compute_pdelay_rate_ratio()
300 	port_ds->neighbor_rate_ratio_valid = state->neighbor_rate_ratio_valid;  in gptp_md_compute_pdelay_rate_ratio()
307 	struct gptp_pdelay_req_state *state;  in gptp_md_compute_prop_time()  local
314 	state = &GPTP_PORT_STATE(port)->pdelay_req;  in gptp_md_compute_prop_time()
318 	pkt = state->tx_pdelay_req_ptr;  in gptp_md_compute_prop_time()
324 	pkt = state->rcvd_pdelay_resp_ptr;  in gptp_md_compute_prop_time()
330 	pkt = state->rcvd_pdelay_resp_ptr;  in gptp_md_compute_prop_time()
342 	pkt = state->rcvd_pdelay_follow_up_ptr;  in gptp_md_compute_prop_time()
377 	struct gptp_pdelay_req_state *state;  in gptp_md_pdelay_compute()  local
383 	state = &GPTP_PORT_STATE(port)->pdelay_req;  in gptp_md_pdelay_compute()
386 	if (!state->tx_pdelay_req_ptr || !state->rcvd_pdelay_resp_ptr ||  in gptp_md_pdelay_compute()
387 	    !state->rcvd_pdelay_follow_up_ptr) {  in gptp_md_pdelay_compute()
404 	state->lost_responses = 0U;  in gptp_md_pdelay_compute()
407 	pkt = state->rcvd_pdelay_follow_up_ptr;  in gptp_md_pdelay_compute()
418 	if (!state->neighbor_rate_ratio_valid) {  in gptp_md_pdelay_compute()
441 	if (state->tx_pdelay_req_ptr) {  in gptp_md_pdelay_compute()
442 		net_pkt_unref(state->tx_pdelay_req_ptr);  in gptp_md_pdelay_compute()
443 		state->tx_pdelay_req_ptr = NULL;  in gptp_md_pdelay_compute()
446 	if (state->rcvd_pdelay_resp_ptr) {  in gptp_md_pdelay_compute()
447 		net_pkt_unref(state->rcvd_pdelay_resp_ptr);  in gptp_md_pdelay_compute()
448 		state->rcvd_pdelay_resp_ptr = NULL;  in gptp_md_pdelay_compute()
451 	if (state->rcvd_pdelay_follow_up_ptr) {  in gptp_md_pdelay_compute()
452 		net_pkt_unref(state->rcvd_pdelay_follow_up_ptr);  in gptp_md_pdelay_compute()
453 		state->rcvd_pdelay_follow_up_ptr = NULL;  in gptp_md_pdelay_compute()
459 	struct gptp_pdelay_req_state *state;  in gptp_md_pdelay_req_timeout()  local
463 		state = &GPTP_PORT_STATE(port)->pdelay_req;  in gptp_md_pdelay_req_timeout()
464 		if (timer == &state->pdelay_timer) {  in gptp_md_pdelay_req_timeout()
465 			state->pdelay_timer_expired = true;  in gptp_md_pdelay_req_timeout()
467 			if (state->rcvd_pdelay_resp == 0U) {  in gptp_md_pdelay_req_timeout()
477 	struct gptp_pdelay_req_state *state;  in gptp_md_start_pdelay_req()  local
481 	state = &GPTP_PORT_STATE(port)->pdelay_req;  in gptp_md_start_pdelay_req()
486 	state->lost_responses = 0U;  in gptp_md_start_pdelay_req()
487 	state->rcvd_pdelay_resp = 0U;  in gptp_md_start_pdelay_req()
488 	state->rcvd_pdelay_follow_up = 0U;  in gptp_md_start_pdelay_req()
489 	state->multiple_resp_count = 0U;  in gptp_md_start_pdelay_req()
494 	struct gptp_sync_rcv_state *state;  in gptp_md_follow_up_receipt_timeout()  local
498 		state = &GPTP_PORT_STATE(port)->sync_rcv;  in gptp_md_follow_up_receipt_timeout()
499 		if (timer == &state->follow_up_discard_timer) {  in gptp_md_follow_up_receipt_timeout()
502 			state->follow_up_timeout_expired = true;  in gptp_md_follow_up_receipt_timeout()
509 	struct gptp_pdelay_req_state *state;  in gptp_md_init_pdelay_req_state_machine()  local
511 	state = &GPTP_PORT_STATE(port)->pdelay_req;  in gptp_md_init_pdelay_req_state_machine()
513 	k_timer_init(&state->pdelay_timer, gptp_md_pdelay_req_timeout, NULL);  in gptp_md_init_pdelay_req_state_machine()
515 	state->state = GPTP_PDELAY_REQ_NOT_ENABLED;  in gptp_md_init_pdelay_req_state_machine()
517 	state->neighbor_rate_ratio_valid = false;  in gptp_md_init_pdelay_req_state_machine()
518 	state->init_pdelay_compute = true;  in gptp_md_init_pdelay_req_state_machine()
519 	state->rcvd_pdelay_resp = 0U;  in gptp_md_init_pdelay_req_state_machine()
520 	state->rcvd_pdelay_follow_up = 0U;  in gptp_md_init_pdelay_req_state_machine()
521 	state->pdelay_timer_expired = false;  in gptp_md_init_pdelay_req_state_machine()
523 	state->rcvd_pdelay_resp_ptr = NULL;  in gptp_md_init_pdelay_req_state_machine()
524 	state->rcvd_pdelay_follow_up_ptr = NULL;  in gptp_md_init_pdelay_req_state_machine()
525 	state->tx_pdelay_req_ptr = NULL;  in gptp_md_init_pdelay_req_state_machine()
527 	state->ini_resp_evt_tstamp = 0U;  in gptp_md_init_pdelay_req_state_machine()
528 	state->ini_resp_ingress_tstamp = 0U;  in gptp_md_init_pdelay_req_state_machine()
529 	state->lost_responses = 0U;  in gptp_md_init_pdelay_req_state_machine()
534 	struct gptp_pdelay_resp_state *state;  in gptp_md_init_pdelay_resp_state_machine()  local
536 	state = &GPTP_PORT_STATE(port)->pdelay_resp;  in gptp_md_init_pdelay_resp_state_machine()
538 	state->state = GPTP_PDELAY_RESP_NOT_ENABLED;  in gptp_md_init_pdelay_resp_state_machine()
543 	struct gptp_sync_rcv_state *state;  in gptp_md_init_sync_rcv_state_machine()  local
545 	state = &GPTP_PORT_STATE(port)->sync_rcv;  in gptp_md_init_sync_rcv_state_machine()
547 	k_timer_init(&state->follow_up_discard_timer,  in gptp_md_init_sync_rcv_state_machine()
550 	state->rcvd_sync = false;  in gptp_md_init_sync_rcv_state_machine()
551 	state->rcvd_follow_up = false;  in gptp_md_init_sync_rcv_state_machine()
552 	state->rcvd_sync_ptr = NULL;  in gptp_md_init_sync_rcv_state_machine()
553 	state->rcvd_follow_up_ptr = NULL;  in gptp_md_init_sync_rcv_state_machine()
555 	state->follow_up_timeout_expired = false;  in gptp_md_init_sync_rcv_state_machine()
556 	state->follow_up_receipt_timeout = 0U;  in gptp_md_init_sync_rcv_state_machine()
558 	state->state = GPTP_SYNC_RCV_DISCARD;  in gptp_md_init_sync_rcv_state_machine()
563 	struct gptp_sync_send_state *state;  in gptp_md_init_sync_send_state_machine()  local
565 	state = &GPTP_PORT_STATE(port)->sync_send;  in gptp_md_init_sync_send_state_machine()
567 	state->rcvd_md_sync = false;  in gptp_md_init_sync_send_state_machine()
568 	state->md_sync_timestamp_avail = false;  in gptp_md_init_sync_send_state_machine()
569 	state->sync_send_ptr = NULL;  in gptp_md_init_sync_send_state_machine()
570 	state->sync_ptr = NULL;  in gptp_md_init_sync_send_state_machine()
572 	state->state = GPTP_SYNC_SEND_INITIALIZING;  in gptp_md_init_sync_send_state_machine()
590 	struct gptp_pdelay_req_state *state;  in gptp_md_pdelay_req_state_machine()  local
593 	state = &GPTP_PORT_STATE(port)->pdelay_req;  in gptp_md_pdelay_req_state_machine()
599 	if (state->rcvd_pdelay_resp > 1 || state->rcvd_pdelay_follow_up > 1) {  in gptp_md_pdelay_req_state_machine()
605 		k_timer_stop(&state->pdelay_timer);  in gptp_md_pdelay_req_state_machine()
606 		state->state = GPTP_PDELAY_REQ_NOT_ENABLED;  in gptp_md_pdelay_req_state_machine()
609 	switch (state->state) {  in gptp_md_pdelay_req_state_machine()
613 			 * LinkDelaySyncIntervalSetting state machine).  in gptp_md_pdelay_req_state_machine()
624 			state->pdelay_timer_expired = true;  in gptp_md_pdelay_req_state_machine()
625 			state->state = GPTP_PDELAY_REQ_INITIAL_SEND_REQ;  in gptp_md_pdelay_req_state_machine()
633 		state->state = GPTP_PDELAY_REQ_WAIT_ITV_TIMER;  in gptp_md_pdelay_req_state_machine()
641 		if (state->tx_pdelay_req_ptr) {  in gptp_md_pdelay_req_state_machine()
642 			net_pkt_unref(state->tx_pdelay_req_ptr);  in gptp_md_pdelay_req_state_machine()
643 			state->tx_pdelay_req_ptr = NULL;  in gptp_md_pdelay_req_state_machine()
646 		if (state->rcvd_pdelay_resp_ptr) {  in gptp_md_pdelay_req_state_machine()
647 			net_pkt_unref(state->rcvd_pdelay_resp_ptr);  in gptp_md_pdelay_req_state_machine()
648 			state->rcvd_pdelay_resp_ptr = NULL;  in gptp_md_pdelay_req_state_machine()
651 		if (state->rcvd_pdelay_follow_up_ptr) {  in gptp_md_pdelay_req_state_machine()
652 			net_pkt_unref(state->rcvd_pdelay_follow_up_ptr);  in gptp_md_pdelay_req_state_machine()
653 			state->rcvd_pdelay_follow_up_ptr = NULL;  in gptp_md_pdelay_req_state_machine()
658 		k_timer_stop(&state->pdelay_timer);  in gptp_md_pdelay_req_state_machine()
659 		state->pdelay_timer_expired = false;  in gptp_md_pdelay_req_state_machine()
660 		k_timer_start(&state->pdelay_timer,  in gptp_md_pdelay_req_state_machine()
669 		state->state = GPTP_PDELAY_REQ_WAIT_RESP;  in gptp_md_pdelay_req_state_machine()
673 		if (state->pdelay_timer_expired) {  in gptp_md_pdelay_req_state_machine()
674 			state->state = GPTP_PDELAY_REQ_RESET;  in gptp_md_pdelay_req_state_machine()
675 		} else if (state->rcvd_pdelay_resp != 0U) {  in gptp_md_pdelay_req_state_machine()
676 			pkt = state->rcvd_pdelay_resp_ptr;  in gptp_md_pdelay_req_state_machine()
678 				state->state = GPTP_PDELAY_REQ_WAIT_FOLLOW_UP;  in gptp_md_pdelay_req_state_machine()
680 				state->state = GPTP_PDELAY_REQ_RESET;  in gptp_md_pdelay_req_state_machine()
687 		if (state->pdelay_timer_expired) {  in gptp_md_pdelay_req_state_machine()
688 			state->state = GPTP_PDELAY_REQ_RESET;  in gptp_md_pdelay_req_state_machine()
689 		} else if (state->rcvd_pdelay_follow_up != 0U) {  in gptp_md_pdelay_req_state_machine()
690 			pkt = state->rcvd_pdelay_follow_up_ptr;  in gptp_md_pdelay_req_state_machine()
693 				state->state = GPTP_PDELAY_REQ_WAIT_ITV_TIMER;  in gptp_md_pdelay_req_state_machine()
695 				state->state = GPTP_PDELAY_REQ_RESET;  in gptp_md_pdelay_req_state_machine()
702 		if (state->pdelay_timer_expired) {  in gptp_md_pdelay_req_state_machine()
705 			state->rcvd_pdelay_resp = 0U;  in gptp_md_pdelay_req_state_machine()
706 			state->rcvd_pdelay_follow_up = 0U;  in gptp_md_pdelay_req_state_machine()
716 	struct gptp_pdelay_resp_state *state;  in gptp_md_pdelay_resp_state_machine()  local
718 	state = &GPTP_PORT_STATE(port)->pdelay_resp;  in gptp_md_pdelay_resp_state_machine()
722 		state->state = GPTP_PDELAY_RESP_NOT_ENABLED;  in gptp_md_pdelay_resp_state_machine()
725 	switch (state->state) {  in gptp_md_pdelay_resp_state_machine()
728 			state->state = GPTP_PDELAY_RESP_INITIAL_WAIT_REQ;  in gptp_md_pdelay_resp_state_machine()
748 	struct gptp_sync_rcv_state *state;  in gptp_md_sync_receive_state_machine()  local
751 	state = &GPTP_PORT_STATE(port)->sync_rcv;  in gptp_md_sync_receive_state_machine()
757 		k_timer_stop(&state->follow_up_discard_timer);  in gptp_md_sync_receive_state_machine()
760 		if (state->rcvd_sync_ptr) {  in gptp_md_sync_receive_state_machine()
761 			net_pkt_unref(state->rcvd_sync_ptr);  in gptp_md_sync_receive_state_machine()
762 			state->rcvd_sync_ptr = NULL;  in gptp_md_sync_receive_state_machine()
765 		if (state->rcvd_follow_up_ptr) {  in gptp_md_sync_receive_state_machine()
766 			net_pkt_unref(state->rcvd_follow_up_ptr);  in gptp_md_sync_receive_state_machine()
767 			state->rcvd_follow_up_ptr = NULL;  in gptp_md_sync_receive_state_machine()
770 		state->rcvd_sync = false;  in gptp_md_sync_receive_state_machine()
771 		state->rcvd_follow_up = false;  in gptp_md_sync_receive_state_machine()
772 		state->state = GPTP_SYNC_RCV_DISCARD;  in gptp_md_sync_receive_state_machine()
776 	switch (state->state) {  in gptp_md_sync_receive_state_machine()
779 		if (state->rcvd_sync) {  in gptp_md_sync_receive_state_machine()
780 			gptp_handle_sync(port, state->rcvd_sync_ptr);  in gptp_md_sync_receive_state_machine()
781 			state->rcvd_sync = false;  in gptp_md_sync_receive_state_machine()
782 			state->state = GPTP_SYNC_RCV_WAIT_FOLLOW_UP;  in gptp_md_sync_receive_state_machine()
783 		} else if (state->rcvd_follow_up) {  in gptp_md_sync_receive_state_machine()
785 			if (state->rcvd_follow_up_ptr) {  in gptp_md_sync_receive_state_machine()
786 				net_pkt_unref(state->rcvd_follow_up_ptr);  in gptp_md_sync_receive_state_machine()
787 				state->rcvd_follow_up_ptr = NULL;  in gptp_md_sync_receive_state_machine()
790 			state->rcvd_follow_up = false;  in gptp_md_sync_receive_state_machine()
797 		if (state->follow_up_timeout_expired) {  in gptp_md_sync_receive_state_machine()
798 			k_timer_stop(&state->follow_up_discard_timer);  in gptp_md_sync_receive_state_machine()
799 			state->follow_up_timeout_expired = false;  in gptp_md_sync_receive_state_machine()
800 			state->state = GPTP_SYNC_RCV_DISCARD;  in gptp_md_sync_receive_state_machine()
801 			if (state->rcvd_sync_ptr) {  in gptp_md_sync_receive_state_machine()
802 				net_pkt_unref(state->rcvd_sync_ptr);  in gptp_md_sync_receive_state_machine()
803 				state->rcvd_sync_ptr = NULL;  in gptp_md_sync_receive_state_machine()
806 			state->rcvd_sync = false;  in gptp_md_sync_receive_state_machine()
807 		} else if (state->rcvd_sync) {  in gptp_md_sync_receive_state_machine()
809 			gptp_handle_sync(port, state->rcvd_sync_ptr);  in gptp_md_sync_receive_state_machine()
810 			state->rcvd_sync = false;  in gptp_md_sync_receive_state_machine()
811 		} else if (state->rcvd_follow_up) {  in gptp_md_sync_receive_state_machine()
813 				    port, state->rcvd_follow_up_ptr)) {  in gptp_md_sync_receive_state_machine()
824 				state->state = GPTP_SYNC_RCV_WAIT_SYNC;  in gptp_md_sync_receive_state_machine()
827 				if (state->rcvd_sync_ptr) {  in gptp_md_sync_receive_state_machine()
828 					net_pkt_unref(state->rcvd_sync_ptr);  in gptp_md_sync_receive_state_machine()
829 					state->rcvd_sync_ptr = NULL;  in gptp_md_sync_receive_state_machine()
832 				k_timer_stop(&state->follow_up_discard_timer);  in gptp_md_sync_receive_state_machine()
833 				state->follow_up_timeout_expired = false;  in gptp_md_sync_receive_state_machine()
837 		if (state->rcvd_follow_up_ptr) {  in gptp_md_sync_receive_state_machine()
838 			net_pkt_unref(state->rcvd_follow_up_ptr);  in gptp_md_sync_receive_state_machine()
839 			state->rcvd_follow_up_ptr = NULL;  in gptp_md_sync_receive_state_machine()
842 		state->rcvd_follow_up = false;  in gptp_md_sync_receive_state_machine()
850 	struct gptp_sync_send_state *state;  in gptp_md_sync_send_state_machine()  local
853 	state = &GPTP_PORT_STATE(port)->sync_send;  in gptp_md_sync_send_state_machine()
857 		state->rcvd_md_sync = false;  in gptp_md_sync_send_state_machine()
858 		state->state = GPTP_SYNC_SEND_INITIALIZING;  in gptp_md_sync_send_state_machine()
865 	switch (state->state) {  in gptp_md_sync_send_state_machine()
867 		state->state = GPTP_SYNC_SEND_SEND_SYNC;  in gptp_md_sync_send_state_machine()
871 		if (state->rcvd_md_sync) {  in gptp_md_sync_send_state_machine()
875 				state->sync_ptr = net_pkt_ref(pkt);  in gptp_md_sync_send_state_machine()
877 						     state->sync_send_ptr,  in gptp_md_sync_send_state_machine()
882 			state->rcvd_md_sync = false;  in gptp_md_sync_send_state_machine()
883 			state->state = GPTP_SYNC_SEND_SEND_FUP;  in gptp_md_sync_send_state_machine()
889 		if (state->md_sync_timestamp_avail) {  in gptp_md_sync_send_state_machine()
890 			state->md_sync_timestamp_avail = false;  in gptp_md_sync_send_state_machine()
892 			if (!state->sync_ptr) {  in gptp_md_sync_send_state_machine()
897 			pkt = gptp_prepare_follow_up(port, state->sync_ptr);  in gptp_md_sync_send_state_machine()
900 							 state->sync_ptr,  in gptp_md_sync_send_state_machine()
901 							 state->sync_send_ptr,  in gptp_md_sync_send_state_machine()
906 			net_pkt_unref(state->sync_ptr);  in gptp_md_sync_send_state_machine()
907 			state->sync_ptr = NULL;  in gptp_md_sync_send_state_machine()
909 			state->state = GPTP_SYNC_SEND_SEND_SYNC;  in gptp_md_sync_send_state_machine()