ospf6d: Clean up thread interface

a) Remove setting of thread pointer to NULL after
thread invocation, this is already done.

b) Use thread_is_scheduled()

Signed-off-by: Donald Sharp <sharpd@nvidia.com>

9 files changed, 59 insertions, 53 deletions

diff --git a/ospf6d/ospf6_asbr.c b/ospf6d/ospf6_asbr.c
index 899c78c9fb..c210b4476c 100644
--- a/ospf6d/ospf6_asbr.c
+++ b/ospf6d/ospf6_asbr.c
@@ -1121,7 +1121,7 @@ void ospf6_asbr_distribute_list_update(struct ospf6 *ospf6,
 {
 	SET_FLAG(red->flag, OSPF6_IS_RMAP_CHANGED);
 
-	if (ospf6->t_distribute_update)
+	if (thread_is_scheduled(ospf6->t_distribute_update))
 		return;
 
 	if (IS_OSPF6_DEBUG_ASBR)
@@ -3360,7 +3360,7 @@ ospf6_start_asbr_summary_delay_timer(struct ospf6 *ospf6,
 {
 	aggr->action = operation;
 
-	if (ospf6->t_external_aggr) {
+	if (thread_is_scheduled(ospf6->t_external_aggr)) {
 		if (ospf6->aggr_action == OSPF6_ROUTE_AGGR_ADD) {
 
 			if (IS_OSPF6_DEBUG_AGGR)
diff --git a/ospf6d/ospf6_gr.c b/ospf6d/ospf6_gr.c
index 87407245b3..d7de66c663 100644
--- a/ospf6d/ospf6_gr.c
+++ b/ospf6d/ospf6_gr.c
@@ -459,7 +459,6 @@ static void ospf6_gr_grace_period_expired(struct thread *thread)
 {
 	struct ospf6 *ospf6 = THREAD_ARG(thread);
 
-	ospf6->gr_info.t_grace_period = NULL;
 	ospf6_gr_restart_exit(ospf6, "grace period has expired");
 }
 
diff --git a/ospf6d/ospf6_gr_helper.c b/ospf6d/ospf6_gr_helper.c
index 1db56beaff..33a7a57c0f 100644
--- a/ospf6d/ospf6_gr_helper.c
+++ b/ospf6d/ospf6_gr_helper.c
@@ -400,8 +400,7 @@ int ospf6_process_grace_lsa(struct ospf6 *ospf6, struct ospf6_lsa *lsa,
 	}
 
 	if (OSPF6_GR_IS_ACTIVE_HELPER(restarter)) {
-		if (restarter->gr_helper_info.t_grace_timer)
-			THREAD_OFF(restarter->gr_helper_info.t_grace_timer);
+		THREAD_OFF(restarter->gr_helper_info.t_grace_timer);
 
 		if (ospf6->ospf6_helper_cfg.active_restarter_cnt > 0)
 			ospf6->ospf6_helper_cfg.active_restarter_cnt--;
diff --git a/ospf6d/ospf6_interface.c b/ospf6d/ospf6_interface.c
index c58bb3a0fb..2a503c6233 100644
--- a/ospf6d/ospf6_interface.c
+++ b/ospf6d/ospf6_interface.c
@@ -1152,7 +1152,7 @@ static int ospf6_interface_show(struct vty *vty, struct interface *ifp,
 
 	if (use_json) {
 		timerclear(&res);
-		if (oi->thread_send_lsupdate)
+		if (thread_is_scheduled(oi->thread_send_lsupdate))
 			timersub(&oi->thread_send_lsupdate->u.sands, &now,
 				 &res);
 		timerstring(&res, duration, sizeof(duration));
@@ -1162,7 +1162,9 @@ static int ospf6_interface_show(struct vty *vty, struct interface *ifp,
 				       duration);
 		json_object_string_add(
 			json_obj, "lsUpdateSendThread",
-			(oi->thread_send_lsupdate ? "on" : "off"));
+			(thread_is_scheduled(oi->thread_send_lsupdate)
+				 ? "on"
+				 : "off"));
 
 		json_arr = json_object_new_array();
 		for (ALL_LSDB(oi->lsupdate_list, lsa, lsanext))
@@ -1172,7 +1174,7 @@ static int ospf6_interface_show(struct vty *vty, struct interface *ifp,
 				       json_arr);
 
 		timerclear(&res);
-		if (oi->thread_send_lsack)
+		if (thread_is_scheduled(oi->thread_send_lsack))
 			timersub(&oi->thread_send_lsack->u.sands, &now, &res);
 		timerstring(&res, duration, sizeof(duration));
 
@@ -1180,8 +1182,10 @@ static int ospf6_interface_show(struct vty *vty, struct interface *ifp,
 				    oi->lsack_list->count);
 		json_object_string_add(json_obj, "pendingLsaLsAckTime",
 				       duration);
-		json_object_string_add(json_obj, "lsAckSendThread",
-				       (oi->thread_send_lsack ? "on" : "off"));
+		json_object_string_add(
+			json_obj, "lsAckSendThread",
+			(thread_is_scheduled(oi->thread_send_lsack) ? "on"
+								    : "off"));
 
 		json_arr = json_object_new_array();
 		for (ALL_LSDB(oi->lsack_list, lsa, lsanext))
@@ -1191,25 +1195,28 @@ static int ospf6_interface_show(struct vty *vty, struct interface *ifp,
 
 	} else {
 		timerclear(&res);
-		if (oi->thread_send_lsupdate)
+		if (thread_is_scheduled(oi->thread_send_lsupdate))
 			timersub(&oi->thread_send_lsupdate->u.sands, &now,
 				 &res);
 		timerstring(&res, duration, sizeof(duration));
 		vty_out(vty,
 			"    %d Pending LSAs for LSUpdate in Time %s [thread %s]\n",
 			oi->lsupdate_list->count, duration,
-			(oi->thread_send_lsupdate ? "on" : "off"));
+			(thread_is_scheduled(oi->thread_send_lsupdate)
+				 ? "on"
+				 : "off"));
 		for (ALL_LSDB(oi->lsupdate_list, lsa, lsanext))
 			vty_out(vty, "      %s\n", lsa->name);
 
 		timerclear(&res);
-		if (oi->thread_send_lsack)
+		if (thread_is_scheduled(oi->thread_send_lsack))
 			timersub(&oi->thread_send_lsack->u.sands, &now, &res);
 		timerstring(&res, duration, sizeof(duration));
 		vty_out(vty,
 			"    %d Pending LSAs for LSAck in Time %s [thread %s]\n",
 			oi->lsack_list->count, duration,
-			(oi->thread_send_lsack ? "on" : "off"));
+			(thread_is_scheduled(oi->thread_send_lsack) ? "on"
+								    : "off"));
 		for (ALL_LSDB(oi->lsack_list, lsa, lsanext))
 			vty_out(vty, "      %s\n", lsa->name);
 	}
diff --git a/ospf6d/ospf6_message.c b/ospf6d/ospf6_message.c
index 1eede57232..ae7f16a9f6 100644
--- a/ospf6d/ospf6_message.c
+++ b/ospf6d/ospf6_message.c
@@ -2339,7 +2339,6 @@ void ospf6_dbdesc_send(struct thread *thread)
 	struct ospf6_packet *op;
 
 	on = (struct ospf6_neighbor *)THREAD_ARG(thread);
-	on->thread_send_dbdesc = (struct thread *)NULL;
 
 	if (on->state < OSPF6_NEIGHBOR_EXSTART) {
 		if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_DBDESC, SEND))
@@ -2505,7 +2504,6 @@ void ospf6_lsreq_send(struct thread *thread)
 	uint16_t length = OSPF6_HEADER_SIZE;
 
 	on = (struct ospf6_neighbor *)THREAD_ARG(thread);
-	on->thread_send_lsreq = (struct thread *)NULL;
 
 	/* LSReq will be sent only in ExStart or Loading */
 	if (on->state != OSPF6_NEIGHBOR_EXCHANGE
@@ -2685,7 +2683,6 @@ void ospf6_lsupdate_send_neighbor(struct thread *thread)
 	int lsa_cnt = 0;
 
 	on = (struct ospf6_neighbor *)THREAD_ARG(thread);
-	on->thread_send_lsupdate = (struct thread *)NULL;
 
 	if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE, SEND_HDR))
 		zlog_debug("LSUpdate to neighbor %s", on->name);
@@ -2821,7 +2818,6 @@ void ospf6_lsupdate_send_interface(struct thread *thread)
 	int lsa_cnt = 0;
 
 	oi = (struct ospf6_interface *)THREAD_ARG(thread);
-	oi->thread_send_lsupdate = (struct thread *)NULL;
 
 	if (oi->state <= OSPF6_INTERFACE_WAITING) {
 		if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSUPDATE,
@@ -2862,7 +2858,6 @@ void ospf6_lsack_send_neighbor(struct thread *thread)
 	uint16_t length = OSPF6_HEADER_SIZE;
 
 	on = (struct ospf6_neighbor *)THREAD_ARG(thread);
-	on->thread_send_lsack = (struct thread *)NULL;
 
 	if (on->state < OSPF6_NEIGHBOR_EXCHANGE) {
 		if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSACK, SEND_HDR))
@@ -2939,7 +2934,6 @@ void ospf6_lsack_send_interface(struct thread *thread)
 	uint16_t length = OSPF6_HEADER_SIZE;
 
 	oi = (struct ospf6_interface *)THREAD_ARG(thread);
-	oi->thread_send_lsack = (struct thread *)NULL;
 
 	if (oi->state <= OSPF6_INTERFACE_WAITING) {
 		if (IS_OSPF6_DEBUG_MESSAGE(OSPF6_MESSAGE_TYPE_LSACK, SEND_HDR))
diff --git a/ospf6d/ospf6_neighbor.c b/ospf6d/ospf6_neighbor.c
index 8dca0913d3..439b94c9af 100644
--- a/ospf6d/ospf6_neighbor.c
+++ b/ospf6d/ospf6_neighbor.c
@@ -435,8 +435,7 @@ void ospf6_check_nbr_loading(struct ospf6_neighbor *on)
 		if (on->request_list->count == 0)
 			thread_add_event(master, loading_done, on, 0, NULL);
 		else if (on->last_ls_req == NULL) {
-			if (on->thread_send_lsreq != NULL)
-				THREAD_OFF(on->thread_send_lsreq);
+			THREAD_OFF(on->thread_send_lsreq);
 			thread_add_event(master, ospf6_lsreq_send, on, 0,
 					 &on->thread_send_lsreq);
 		}
@@ -481,7 +480,6 @@ void adj_ok(struct thread *thread)
 		SET_FLAG(on->dbdesc_bits, OSPF6_DBDESC_IBIT);
 
 		THREAD_OFF(on->thread_send_dbdesc);
-		on->thread_send_dbdesc = NULL;
 		thread_add_event(master, ospf6_dbdesc_send, on, 0,
 				 &on->thread_send_dbdesc);
 
@@ -527,7 +525,6 @@ void seqnumber_mismatch(struct thread *thread)
 	THREAD_OFF(on->thread_send_dbdesc);
 	on->dbdesc_seqnum++; /* Incr seqnum as per RFC2328, sec 10.3 */
 
-	on->thread_send_dbdesc = NULL;
 	thread_add_event(master, ospf6_dbdesc_send, on, 0,
 			 &on->thread_send_dbdesc);
 }
@@ -562,7 +559,6 @@ void bad_lsreq(struct thread *thread)
 	THREAD_OFF(on->thread_send_dbdesc);
 	on->dbdesc_seqnum++; /* Incr seqnum as per RFC2328, sec 10.3 */
 
-	on->thread_send_dbdesc = NULL;
 	thread_add_event(master, ospf6_dbdesc_send, on, 0,
 			 &on->thread_send_dbdesc);
 
@@ -850,15 +846,17 @@ static void ospf6_neighbor_show_detail(struct vty *vty,
 
 
 		timerclear(&res);
-		if (on->thread_send_dbdesc)
+		if (thread_is_scheduled(on->thread_send_dbdesc))
 			timersub(&on->thread_send_dbdesc->u.sands, &now, &res);
 		timerstring(&res, duration, sizeof(duration));
 		json_object_int_add(json_neighbor, "pendingLsaDbDescCount",
 				    on->dbdesc_list->count);
 		json_object_string_add(json_neighbor, "pendingLsaDbDescTime",
 				       duration);
-		json_object_string_add(json_neighbor, "dbDescSendThread",
-				       (on->thread_send_dbdesc ? "on" : "off"));
+		json_object_string_add(
+			json_neighbor, "dbDescSendThread",
+			(thread_is_scheduled(on->thread_send_dbdesc) ? "on"
+								     : "off"));
 		json_array = json_object_new_array();
 		for (ALL_LSDB(on->dbdesc_list, lsa, lsanext))
 			json_object_array_add(
@@ -867,15 +865,17 @@ static void ospf6_neighbor_show_detail(struct vty *vty,
 				       json_array);
 
 		timerclear(&res);
-		if (on->thread_send_lsreq)
+		if (thread_is_scheduled(on->thread_send_lsreq))
 			timersub(&on->thread_send_lsreq->u.sands, &now, &res);
 		timerstring(&res, duration, sizeof(duration));
 		json_object_int_add(json_neighbor, "pendingLsaLsReqCount",
 				    on->request_list->count);
 		json_object_string_add(json_neighbor, "pendingLsaLsReqTime",
 				       duration);
-		json_object_string_add(json_neighbor, "lsReqSendThread",
-				       (on->thread_send_lsreq ? "on" : "off"));
+		json_object_string_add(
+			json_neighbor, "lsReqSendThread",
+			(thread_is_scheduled(on->thread_send_lsreq) ? "on"
+								    : "off"));
 		json_array = json_object_new_array();
 		for (ALL_LSDB(on->request_list, lsa, lsanext))
 			json_object_array_add(
@@ -885,7 +885,7 @@ static void ospf6_neighbor_show_detail(struct vty *vty,
 
 
 		timerclear(&res);
-		if (on->thread_send_lsupdate)
+		if (thread_is_scheduled(on->thread_send_lsupdate))
 			timersub(&on->thread_send_lsupdate->u.sands, &now,
 				 &res);
 		timerstring(&res, duration, sizeof(duration));
@@ -895,7 +895,9 @@ static void ospf6_neighbor_show_detail(struct vty *vty,
 				       duration);
 		json_object_string_add(
 			json_neighbor, "lsUpdateSendThread",
-			(on->thread_send_lsupdate ? "on" : "off"));
+			(thread_is_scheduled(on->thread_send_lsupdate)
+				 ? "on"
+				 : "off"));
 		json_array = json_object_new_array();
 		for (ALL_LSDB(on->lsupdate_list, lsa, lsanext))
 			json_object_array_add(
@@ -904,15 +906,17 @@ static void ospf6_neighbor_show_detail(struct vty *vty,
 				       json_array);
 
 		timerclear(&res);
-		if (on->thread_send_lsack)
+		if (thread_is_scheduled(on->thread_send_lsack))
 			timersub(&on->thread_send_lsack->u.sands, &now, &res);
 		timerstring(&res, duration, sizeof(duration));
 		json_object_int_add(json_neighbor, "pendingLsaLsAckCount",
 				    on->lsack_list->count);
 		json_object_string_add(json_neighbor, "pendingLsaLsAckTime",
 				       duration);
-		json_object_string_add(json_neighbor, "lsAckSendThread",
-				       (on->thread_send_lsack ? "on" : "off"));
+		json_object_string_add(
+			json_neighbor, "lsAckSendThread",
+			(thread_is_scheduled(on->thread_send_lsack) ? "on"
+								    : "off"));
 		json_array = json_object_new_array();
 		for (ALL_LSDB(on->lsack_list, lsa, lsanext))
 			json_object_array_add(
@@ -1000,47 +1004,52 @@ static void ospf6_neighbor_show_detail(struct vty *vty,
 			vty_out(vty, "      %s\n", lsa->name);
 
 		timerclear(&res);
-		if (on->thread_send_dbdesc)
+		if (thread_is_scheduled(on->thread_send_dbdesc))
 			timersub(&on->thread_send_dbdesc->u.sands, &now, &res);
 		timerstring(&res, duration, sizeof(duration));
 		vty_out(vty,
 			"    %d Pending LSAs for DbDesc in Time %s [thread %s]\n",
 			on->dbdesc_list->count, duration,
-			(on->thread_send_dbdesc ? "on" : "off"));
+			(thread_is_scheduled(on->thread_send_dbdesc) ? "on"
+								     : "off"));
 		for (ALL_LSDB(on->dbdesc_list, lsa, lsanext))
 			vty_out(vty, "      %s\n", lsa->name);
 
 		timerclear(&res);
-		if (on->thread_send_lsreq)
+		if (thread_is_scheduled(on->thread_send_lsreq))
 			timersub(&on->thread_send_lsreq->u.sands, &now, &res);
 		timerstring(&res, duration, sizeof(duration));
 		vty_out(vty,
 			"    %d Pending LSAs for LSReq in Time %s [thread %s]\n",
 			on->request_list->count, duration,
-			(on->thread_send_lsreq ? "on" : "off"));
+			(thread_is_scheduled(on->thread_send_lsreq) ? "on"
+								    : "off"));
 		for (ALL_LSDB(on->request_list, lsa, lsanext))
 			vty_out(vty, "      %s\n", lsa->name);
 
 		timerclear(&res);
-		if (on->thread_send_lsupdate)
+		if (thread_is_scheduled(on->thread_send_lsupdate))
 			timersub(&on->thread_send_lsupdate->u.sands, &now,
 				 &res);
 		timerstring(&res, duration, sizeof(duration));
 		vty_out(vty,
 			"    %d Pending LSAs for LSUpdate in Time %s [thread %s]\n",
 			on->lsupdate_list->count, duration,
-			(on->thread_send_lsupdate ? "on" : "off"));
+			(thread_is_scheduled(on->thread_send_lsupdate)
+				 ? "on"
+				 : "off"));
 		for (ALL_LSDB(on->lsupdate_list, lsa, lsanext))
 			vty_out(vty, "      %s\n", lsa->name);
 
 		timerclear(&res);
-		if (on->thread_send_lsack)
+		if (thread_is_scheduled(on->thread_send_lsack))
 			timersub(&on->thread_send_lsack->u.sands, &now, &res);
 		timerstring(&res, duration, sizeof(duration));
 		vty_out(vty,
 			"    %d Pending LSAs for LSAck in Time %s [thread %s]\n",
 			on->lsack_list->count, duration,
-			(on->thread_send_lsack ? "on" : "off"));
+			(thread_is_scheduled(on->thread_send_lsack) ? "on"
+								    : "off"));
 		for (ALL_LSDB(on->lsack_list, lsa, lsanext))
 			vty_out(vty, "      %s\n", lsa->name);
 
diff --git a/ospf6d/ospf6_nssa.c b/ospf6d/ospf6_nssa.c
index 53b45d6ca3..b1bff69f06 100644
--- a/ospf6d/ospf6_nssa.c
+++ b/ospf6d/ospf6_nssa.c
@@ -1007,7 +1007,7 @@ static void ospf6_abr_task_timer(struct thread *thread)
 
 void ospf6_schedule_abr_task(struct ospf6 *ospf6)
 {
-	if (ospf6->t_abr_task) {
+	if (thread_is_scheduled(ospf6->t_abr_task)) {
 		if (IS_OSPF6_DEBUG_ABR)
 			zlog_debug("ABR task already scheduled");
 		return;
diff --git a/ospf6d/ospf6_spf.c b/ospf6d/ospf6_spf.c
index 2e8e9f2cdd..aac371ebbb 100644
--- a/ospf6d/ospf6_spf.c
+++ b/ospf6d/ospf6_spf.c
@@ -615,7 +615,6 @@ static void ospf6_spf_calculation_thread(struct thread *t)
 	char rbuf[32];
 
 	ospf6 = (struct ospf6 *)THREAD_ARG(t);
-	ospf6->t_spf_calc = NULL;
 
 	/* execute SPF calculation */
 	monotime(&start);
@@ -703,7 +702,7 @@ void ospf6_spf_schedule(struct ospf6 *ospf6, unsigned int reason)
 	}
 
 	/* SPF calculation timer is already scheduled. */
-	if (ospf6->t_spf_calc) {
+	if (thread_is_scheduled(ospf6->t_spf_calc)) {
 		if (IS_OSPF6_DEBUG_SPF(PROCESS) || IS_OSPF6_DEBUG_SPF(TIME))
 			zlog_debug(
 				"SPF: calculation timer is already scheduled: %p",
@@ -740,7 +739,7 @@ void ospf6_spf_schedule(struct ospf6 *ospf6, unsigned int reason)
 	if (IS_OSPF6_DEBUG_SPF(PROCESS) || IS_OSPF6_DEBUG_SPF(TIME))
 		zlog_debug("SPF: Rescheduling in %ld msec", delay);
 
-	ospf6->t_spf_calc = NULL;
+	THREAD_OFF(ospf6->t_spf_calc);
 	thread_add_timer_msec(master, ospf6_spf_calculation_thread, ospf6,
 			      delay, &ospf6->t_spf_calc);
 }
@@ -1253,7 +1252,6 @@ static void ospf6_ase_calculate_timer(struct thread *t)
 	uint16_t type;
 
 	ospf6 = THREAD_ARG(t);
-	ospf6->t_ase_calc = NULL;
 
 	/* Calculate external route for each AS-external-LSA */
 	type = htons(OSPF6_LSTYPE_AS_EXTERNAL);
diff --git a/ospf6d/ospf6_top.c b/ospf6d/ospf6_top.c
index f85bdb35b8..d48e85cedb 100644
--- a/ospf6d/ospf6_top.c
+++ b/ospf6d/ospf6_top.c
@@ -1372,9 +1372,7 @@ static void ospf6_show(struct vty *vty, struct ospf6 *o, json_object *json,
 		} else
 			json_object_boolean_false_add(json, "spfHasRun");
 
-
-		threadtimer_string(now, o->t_spf_calc, buf, sizeof(buf));
-		if (o->t_spf_calc) {
+		if (thread_is_scheduled(o->t_spf_calc)) {
 			long time_store;
 
 			json_object_boolean_true_add(json, "spfTimerActive");
@@ -1467,7 +1465,9 @@ static void ospf6_show(struct vty *vty, struct ospf6 *o, json_object *json,
 
 		threadtimer_string(now, o->t_spf_calc, buf, sizeof(buf));
 		vty_out(vty, " SPF timer %s%s\n",
-			(o->t_spf_calc ? "due in " : "is "), buf);
+			(thread_is_scheduled(o->t_spf_calc) ? "due in "
+							    : "is "),
+			buf);
 
 		if (CHECK_FLAG(o->flag, OSPF6_STUB_ROUTER))
 			vty_out(vty, " Router Is Stub Router\n");