*: Add FOREACH_AFI_SAFI_NSF(afi, safi) macro to reduce nesting

Used for graceful-restart mostly.

Especially for bgp_show_neighbor_graceful_restart_capability_per_afi_safi()

Signed-off-by: Donatas Abraitis <donatas.abraitis@gmail.com>

.clang-format

@@ -69,6 +69,7 @@ ForEachMacros:
   - SUBGRP_FOREACH_ADJ_SAFE
   - AF_FOREACH
   - FOREACH_AFI_SAFI
+  - FOREACH_AFI_SAFI_NSF
   - FOREACH_SAFI
   # ospfd
   - LSDB_LOOP

bgpd/bgp_fsm.c

@@ -848,10 +848,9 @@ static int bgp_graceful_stale_timer_expire(struct thread *thread)
 			   peer->host);
 
 	/* NSF delete stale route */
-	for (afi = AFI_IP; afi < AFI_MAX; afi++)
-		for (safi = SAFI_UNICAST; safi <= SAFI_MPLS_VPN; safi++)
-			if (peer->nsf[afi][safi])
-				bgp_clear_stale_route(peer, afi, safi);
+	FOREACH_AFI_SAFI_NSF (afi, safi)
+		if (peer->nsf[afi][safi])
+			bgp_clear_stale_route(peer, afi, safi);
 
 	return 0;
 }
@@ -1441,10 +1440,8 @@ int bgp_stop(struct peer *peer)
 		} else {
 			UNSET_FLAG(peer->sflags, PEER_STATUS_NSF_MODE);
 
-			for (afi = AFI_IP; afi < AFI_MAX; afi++)
-				for (safi = SAFI_UNICAST; safi <= SAFI_MPLS_VPN;
-				     safi++)
-					peer->nsf[afi][safi] = 0;
+			FOREACH_AFI_SAFI_NSF (afi, safi)
+				peer->nsf[afi][safi] = 0;
 		}
 
 		/* Stop route-refresh stalepath timer */
@@ -2125,48 +2122,43 @@ static int bgp_establish(struct peer *peer)
 		else if (BGP_PEER_HELPER_MODE(peer))
 			zlog_debug("peer %s BGP_HELPER_MODE", peer->host);
 	}
-	for (afi = AFI_IP; afi < AFI_MAX; afi++)
-		for (safi = SAFI_UNICAST; safi <= SAFI_MPLS_VPN; safi++) {
-			if (peer->afc_nego[afi][safi]
-			    && CHECK_FLAG(peer->cap, PEER_CAP_RESTART_ADV)
-			    && CHECK_FLAG(peer->af_cap[afi][safi],
-					  PEER_CAP_RESTART_AF_RCV)) {
-				if (peer->nsf[afi][safi]
-				    && !CHECK_FLAG(
-					       peer->af_cap[afi][safi],
-					       PEER_CAP_RESTART_AF_PRESERVE_RCV))
-					bgp_clear_stale_route(peer, afi, safi);
 
-				peer->nsf[afi][safi] = 1;
-				nsf_af_count++;
+	FOREACH_AFI_SAFI_NSF (afi, safi) {
+		if (peer->afc_nego[afi][safi] &&
+		    CHECK_FLAG(peer->cap, PEER_CAP_RESTART_ADV) &&
+		    CHECK_FLAG(peer->af_cap[afi][safi],
+			       PEER_CAP_RESTART_AF_RCV)) {
+			if (peer->nsf[afi][safi] &&
+			    !CHECK_FLAG(peer->af_cap[afi][safi],
+					PEER_CAP_RESTART_AF_PRESERVE_RCV))
+				bgp_clear_stale_route(peer, afi, safi);
+
+			peer->nsf[afi][safi] = 1;
+			nsf_af_count++;
+		} else {
+			if (peer->nsf[afi][safi])
+				bgp_clear_stale_route(peer, afi, safi);
+			peer->nsf[afi][safi] = 0;
+		}
+		/* Update the graceful restart information */
+		if (peer->afc_nego[afi][safi]) {
+			if (!BGP_SELECT_DEFER_DISABLE(peer->bgp)) {
+				status = bgp_update_gr_info(peer, afi, safi);
+				if (status < 0)
+					zlog_err(
+						"Error in updating graceful restart for %s",
+						get_afi_safi_str(afi, safi,
+								 false));
 			} else {
-				if (peer->nsf[afi][safi])
-					bgp_clear_stale_route(peer, afi, safi);
-				peer->nsf[afi][safi] = 0;
-			}
-			/* Update the graceful restart information */
-			if (peer->afc_nego[afi][safi]) {
-				if (!BGP_SELECT_DEFER_DISABLE(peer->bgp)) {
-					status = bgp_update_gr_info(peer, afi,
-								    safi);
-					if (status < 0)
-						zlog_err(
-							"Error in updating graceful restart for %s",
-							get_afi_safi_str(
-								afi, safi,
-								false));
-				} else {
-					if (BGP_PEER_GRACEFUL_RESTART_CAPABLE(
-						    peer)
-					    && BGP_PEER_RESTARTING_MODE(peer)
-					    && CHECK_FLAG(
-						    peer->bgp->flags,
-						    BGP_FLAG_GR_PRESERVE_FWD))
-						peer->bgp->gr_info[afi][safi]
-							.eor_required++;
-				}
+				if (BGP_PEER_GRACEFUL_RESTART_CAPABLE(peer) &&
+				    BGP_PEER_RESTARTING_MODE(peer) &&
+				    CHECK_FLAG(peer->bgp->flags,
+					       BGP_FLAG_GR_PRESERVE_FWD))
+					peer->bgp->gr_info[afi][safi]
+						.eor_required++;
 			}
 		}
+	}
 
 	if (!CHECK_FLAG(peer->cap, PEER_CAP_RESTART_RCV)) {
 		if ((bgp_peer_gr_mode_get(peer) == PEER_GR)

bgpd/bgp_vty.c

@@ -11322,186 +11322,168 @@ static void bgp_show_neighbor_graceful_restart_capability_per_afi_safi(
 	json_object *json_endofrib_status = NULL;
 	bool eor_flag = false;
 
-	for (afi = AFI_IP; afi < AFI_MAX; afi++) {
-		for (safi = SAFI_UNICAST; safi <= SAFI_MPLS_VPN; safi++) {
-			if (!peer->afc[afi][safi])
-				continue;
+	FOREACH_AFI_SAFI_NSF (afi, safi) {
+		if (!peer->afc[afi][safi])
+			continue;
 
-			if (!CHECK_FLAG(peer->cap, PEER_CAP_RESTART_ADV)
-			    || !CHECK_FLAG(peer->cap, PEER_CAP_RESTART_RCV))
-				continue;
+		if (!CHECK_FLAG(peer->cap, PEER_CAP_RESTART_ADV) ||
+		    !CHECK_FLAG(peer->cap, PEER_CAP_RESTART_RCV))
+			continue;
+
+		if (use_json) {
+			json_afi_safi = json_object_new_object();
+			json_endofrib_status = json_object_new_object();
+			json_timer = json_object_new_object();
+		}
+
+		if (peer->eor_stime[afi][safi] >= peer->pkt_stime[afi][safi])
+			eor_flag = true;
+		else
+			eor_flag = false;
+
+		if (!use_json) {
+			vty_out(vty, "    %s:\n",
+				get_afi_safi_str(afi, safi, false));
+
+			vty_out(vty, "      F bit: ");
+		}
+
+		if (peer->nsf[afi][safi] &&
+		    CHECK_FLAG(peer->af_cap[afi][safi],
+			       PEER_CAP_RESTART_AF_PRESERVE_RCV)) {
 
 			if (use_json) {
-				json_afi_safi = json_object_new_object();
-				json_endofrib_status = json_object_new_object();
-				json_timer = json_object_new_object();
-			}
-
-			if (peer->eor_stime[afi][safi]
-			    >= peer->pkt_stime[afi][safi])
-				eor_flag = true;
+				json_object_boolean_true_add(json_afi_safi,
+							     "fBit");
+			} else
+				vty_out(vty, "True\n");
+		} else {
+			if (use_json)
+				json_object_boolean_false_add(json_afi_safi,
+							      "fBit");
 			else
-				eor_flag = false;
+				vty_out(vty, "False\n");
+		}
 
-			if (!use_json) {
-				vty_out(vty, "    %s:\n",
-					get_afi_safi_str(afi, safi, false));
-
-				vty_out(vty, "      F bit: ");
-			}
-
-			if (peer->nsf[afi][safi]
-			    && CHECK_FLAG(peer->af_cap[afi][safi],
-					  PEER_CAP_RESTART_AF_PRESERVE_RCV)) {
-
-				if (use_json) {
-					json_object_boolean_true_add(
-						json_afi_safi, "fBit");
-				} else
-					vty_out(vty, "True\n");
-			} else {
-				if (use_json)
-					json_object_boolean_false_add(
-						json_afi_safi, "fBit");
-				else
-					vty_out(vty, "False\n");
-			}
-
-			if (!use_json)
-				vty_out(vty, "      End-of-RIB sent: ");
-
-			if (CHECK_FLAG(peer->af_sflags[afi][safi],
-				       PEER_STATUS_EOR_SEND)) {
-				if (use_json) {
-					json_object_boolean_true_add(
-						json_endofrib_status,
-						"endOfRibSend");
-
-					PRINT_EOR_JSON(eor_flag);
-				} else {
-					vty_out(vty, "Yes\n");
-					vty_out(vty,
-						"      End-of-RIB sent after update: ");
-
-					PRINT_EOR(eor_flag);
-				}
-			} else {
-				if (use_json) {
-					json_object_boolean_false_add(
-						json_endofrib_status,
-						"endOfRibSend");
-					json_object_boolean_false_add(
-						json_endofrib_status,
-						"endOfRibSentAfterUpdate");
-				} else {
-					vty_out(vty, "No\n");
-					vty_out(vty,
-						"      End-of-RIB sent after update: ");
-					vty_out(vty, "No\n");
-				}
-			}
-
-			if (!use_json)
-				vty_out(vty, "      End-of-RIB received: ");
-
-			if (CHECK_FLAG(peer->af_sflags[afi][safi],
-				       PEER_STATUS_EOR_RECEIVED)) {
-				if (use_json)
-					json_object_boolean_true_add(
-						json_endofrib_status,
-						"endOfRibRecv");
-				else
-					vty_out(vty, "Yes\n");
-			} else {
-				if (use_json)
-					json_object_boolean_false_add(
-						json_endofrib_status,
-						"endOfRibRecv");
-				else
-					vty_out(vty, "No\n");
-			}
+		if (!use_json)
+			vty_out(vty, "      End-of-RIB sent: ");
 
+		if (CHECK_FLAG(peer->af_sflags[afi][safi],
+			       PEER_STATUS_EOR_SEND)) {
 			if (use_json) {
-				json_object_int_add(json_timer,
-						    "stalePathTimer",
-						    peer->bgp->stalepath_time);
+				json_object_boolean_true_add(
+					json_endofrib_status, "endOfRibSend");
 
-				if (peer->t_gr_stale != NULL) {
-					json_object_int_add(
-						json_timer,
-						"stalePathTimerRemaining",
-						thread_timer_remain_second(
-							peer->t_gr_stale));
-				}
-
-				/* Display Configured Selection
-				 * Deferral only when when
-				 * Gr mode is enabled.
-				 */
-				if (CHECK_FLAG(peer->flags,
-					       PEER_FLAG_GRACEFUL_RESTART)) {
-					json_object_int_add(
-						json_timer,
-						"selectionDeferralTimer",
-						peer->bgp->stalepath_time);
-				}
-
-				if (peer->bgp->gr_info[afi][safi]
-					    .t_select_deferral
-				    != NULL) {
-
-					json_object_int_add(
-						json_timer,
-						"selectionDeferralTimerRemaining",
-						thread_timer_remain_second(
-							peer->bgp
-								->gr_info[afi]
-									 [safi]
-								.t_select_deferral));
-				}
+				PRINT_EOR_JSON(eor_flag);
 			} else {
-				vty_out(vty, "      Timers:\n");
+				vty_out(vty, "Yes\n");
 				vty_out(vty,
-					"        Configured Stale Path Time(sec): %u\n",
-					peer->bgp->stalepath_time);
+					"      End-of-RIB sent after update: ");
 
-				if (peer->t_gr_stale != NULL)
-					vty_out(vty,
-						"      Stale Path Remaining(sec): %ld\n",
-						thread_timer_remain_second(
-							peer->t_gr_stale));
-				/* Display Configured Selection
-				 * Deferral only when when
-				 * Gr mode is enabled.
-				 */
-				if (CHECK_FLAG(peer->flags,
-					       PEER_FLAG_GRACEFUL_RESTART))
-					vty_out(vty,
-						"        Configured Selection Deferral Time(sec): %u\n",
-						peer->bgp->select_defer_time);
-
-				if (peer->bgp->gr_info[afi][safi]
-					    .t_select_deferral
-				    != NULL)
-					vty_out(vty,
-						"        Selection Deferral Time Remaining(sec): %ld\n",
-						thread_timer_remain_second(
-							peer->bgp
-								->gr_info[afi]
-									 [safi]
-								.t_select_deferral));
+				PRINT_EOR(eor_flag);
 			}
+		} else {
 			if (use_json) {
-				json_object_object_add(json_afi_safi,
-						       "endOfRibStatus",
-						       json_endofrib_status);
-				json_object_object_add(json_afi_safi, "timers",
-						       json_timer);
-				json_object_object_add(
-					json, get_afi_safi_str(afi, safi, true),
-					json_afi_safi);
+				json_object_boolean_false_add(
+					json_endofrib_status, "endOfRibSend");
+				json_object_boolean_false_add(
+					json_endofrib_status,
+					"endOfRibSentAfterUpdate");
+			} else {
+				vty_out(vty, "No\n");
+				vty_out(vty,
+					"      End-of-RIB sent after update: ");
+				vty_out(vty, "No\n");
 			}
 		}
+
+		if (!use_json)
+			vty_out(vty, "      End-of-RIB received: ");
+
+		if (CHECK_FLAG(peer->af_sflags[afi][safi],
+			       PEER_STATUS_EOR_RECEIVED)) {
+			if (use_json)
+				json_object_boolean_true_add(
+					json_endofrib_status, "endOfRibRecv");
+			else
+				vty_out(vty, "Yes\n");
+		} else {
+			if (use_json)
+				json_object_boolean_false_add(
+					json_endofrib_status, "endOfRibRecv");
+			else
+				vty_out(vty, "No\n");
+		}
+
+		if (use_json) {
+			json_object_int_add(json_timer, "stalePathTimer",
+					    peer->bgp->stalepath_time);
+
+			if (peer->t_gr_stale != NULL) {
+				json_object_int_add(json_timer,
+						    "stalePathTimerRemaining",
+						    thread_timer_remain_second(
+							    peer->t_gr_stale));
+			}
+
+			/* Display Configured Selection
+			 * Deferral only when when
+			 * Gr mode is enabled.
+			 */
+			if (CHECK_FLAG(peer->flags,
+				       PEER_FLAG_GRACEFUL_RESTART)) {
+				json_object_int_add(json_timer,
+						    "selectionDeferralTimer",
+						    peer->bgp->stalepath_time);
+			}
+
+			if (peer->bgp->gr_info[afi][safi].t_select_deferral !=
+			    NULL) {
+
+				json_object_int_add(
+					json_timer,
+					"selectionDeferralTimerRemaining",
+					thread_timer_remain_second(
+						peer->bgp->gr_info[afi][safi]
+							.t_select_deferral));
+			}
+		} else {
+			vty_out(vty, "      Timers:\n");
+			vty_out(vty,
+				"        Configured Stale Path Time(sec): %u\n",
+				peer->bgp->stalepath_time);
+
+			if (peer->t_gr_stale != NULL)
+				vty_out(vty,
+					"      Stale Path Remaining(sec): %ld\n",
+					thread_timer_remain_second(
+						peer->t_gr_stale));
+			/* Display Configured Selection
+			 * Deferral only when when
+			 * Gr mode is enabled.
+			 */
+			if (CHECK_FLAG(peer->flags, PEER_FLAG_GRACEFUL_RESTART))
+				vty_out(vty,
+					"        Configured Selection Deferral Time(sec): %u\n",
+					peer->bgp->select_defer_time);
+
+			if (peer->bgp->gr_info[afi][safi].t_select_deferral !=
+			    NULL)
+				vty_out(vty,
+					"        Selection Deferral Time Remaining(sec): %ld\n",
+					thread_timer_remain_second(
+						peer->bgp->gr_info[afi][safi]
+							.t_select_deferral));
+		}
+		if (use_json) {
+			json_object_object_add(json_afi_safi, "endOfRibStatus",
+					       json_endofrib_status);
+			json_object_object_add(json_afi_safi, "timers",
+					       json_timer);
+			json_object_object_add(
+				json, get_afi_safi_str(afi, safi, true),
+				json_afi_safi);
+		}
 	}
 }
 

bgpd/bgpd.c

@@ -2340,9 +2340,8 @@ void peer_nsf_stop(struct peer *peer)
 	UNSET_FLAG(peer->sflags, PEER_STATUS_NSF_WAIT);
 	UNSET_FLAG(peer->sflags, PEER_STATUS_NSF_MODE);
 
-	for (afi = AFI_IP; afi < AFI_MAX; afi++)
-		for (safi = SAFI_UNICAST; safi <= SAFI_MPLS_VPN; safi++)
-			peer->nsf[afi][safi] = 0;
+	FOREACH_AFI_SAFI_NSF (afi, safi)
+		peer->nsf[afi][safi] = 0;
 
 	if (peer->t_gr_restart) {
 		BGP_TIMER_OFF(peer->t_gr_restart);

lib/zebra.h

@@ -346,6 +346,10 @@ typedef enum {
 	for (afi = AFI_IP; afi < AFI_MAX; afi++)                               \
 		for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++)
 
+#define FOREACH_AFI_SAFI_NSF(afi, safi)                                        \
+	for (afi = AFI_IP; afi < AFI_MAX; afi++)                               \
+		for (safi = SAFI_UNICAST; safi <= SAFI_MPLS_VPN; safi++)
+
 /* Default Administrative Distance of each protocol. */
 #define ZEBRA_KERNEL_DISTANCE_DEFAULT      0
 #define ZEBRA_CONNECT_DISTANCE_DEFAULT     0

zebra/zebra_gr.c

@@ -649,19 +649,17 @@ static void zebra_gr_process_client_stale_routes(struct zserv *client,
 		return;
 
 	/* Check if route update completed for all AFI, SAFI */
-	for (afi = AFI_IP; afi < AFI_MAX; afi++)
-		for (safi = SAFI_UNICAST; safi <= SAFI_MPLS_VPN; safi++) {
-			if (info->af_enabled[afi][safi]) {
-				if (!info->route_sync[afi][safi]) {
-					LOG_GR(
-					   "%s: Client %s route update not completed for AFI %d, SAFI %d",
-					   __func__, zebra_route_string(
-							    client->proto),
-					   afi, safi);
-					return;
-				}
+	FOREACH_AFI_SAFI_NSF (afi, safi) {
+		if (info->af_enabled[afi][safi]) {
+			if (!info->route_sync[afi][safi]) {
+				LOG_GR("%s: Client %s route update not completed for AFI %d, SAFI %d",
+				       __func__,
+				       zebra_route_string(client->proto), afi,
+				       safi);
+				return;
 			}
 		}
+	}
 
 	/*
 	 * Route update completed for all AFI, SAFI