pimd,yang: log MSDP SA events

Add new command to log all SA events.

Signed-off-by: Rafael Zalamena <[email protected]>

pimd/pim_cmd.c

@@ -8282,6 +8282,22 @@ DEFPY(msdp_log_neighbor_changes, msdp_log_neighbor_changes_cmd,
 	return nb_cli_apply_changes(vty, NULL);
 }
 
+DEFPY(msdp_log_sa_changes, msdp_log_sa_changes_cmd,
+      "[no] msdp log sa-events",
+      NO_STR
+      MSDP_STR
+      "MSDP log messages\n"
+      "MSDP log SA event messages\n")
+{
+	char xpath_value[XPATH_MAXLEN + 32];
+
+	snprintf(xpath_value, sizeof(xpath_value), "%s/msdp/log-sa-events", VTY_CURR_XPATH);
+	nb_cli_enqueue_change(vty, xpath_value, no ? NB_OP_DESTROY : NB_OP_MODIFY, "true");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+
 struct pim_sg_cache_walk_data {
 	struct vty *vty;
 	json_object *json;
@@ -8914,6 +8930,7 @@ void pim_cmd_init(void)
 	install_element(PIM_NODE, &no_pim_msdp_mesh_group_source_cmd);
 	install_element(PIM_NODE, &no_pim_msdp_mesh_group_cmd);
 	install_element(PIM_NODE, &msdp_log_neighbor_changes_cmd);
+	install_element(PIM_NODE, &msdp_log_sa_changes_cmd);
 
 	install_element(PIM_NODE, &pim_bsr_candidate_rp_cmd);
 	install_element(PIM_NODE, &pim_bsr_candidate_rp_group_cmd);

pimd/pim_instance.c

@@ -277,3 +277,8 @@ bool pim_msdp_log_neighbor_events(const struct pim_instance *pim)
 {
 	return (pim->log_flags & PIM_MSDP_LOG_NEIGHBOR_EVENTS);
 }
+
+bool pim_msdp_log_sa_events(const struct pim_instance *pim)
+{
+	return (pim->log_flags & PIM_MSDP_LOG_SA_EVENTS);
+}

pimd/pim_instance.h

@@ -196,6 +196,8 @@ struct pim_instance {
 	uint32_t log_flags;
 /** Log neighbor event messages. */
 #define PIM_MSDP_LOG_NEIGHBOR_EVENTS 0x01
+/** Log SA event messages. */
+#define PIM_MSDP_LOG_SA_EVENTS 0x02
 
 	bool stopping;
 
@@ -224,5 +226,6 @@ extern struct pim_router *router;
 struct pim_instance *pim_get_pim_instance(vrf_id_t vrf_id);
 
 extern bool pim_msdp_log_neighbor_events(const struct pim_instance *pim);
+extern bool pim_msdp_log_sa_events(const struct pim_instance *pim);
 
 #endif

pimd/pim_msdp.c

@@ -47,20 +47,13 @@ static int pim_msdp_mg_mbr_comp(const void *p1, const void *p2);
 static void pim_msdp_mg_mbr_free(struct pim_msdp_mg_mbr *mbr);
 
 /************************ SA cache management ******************************/
-static void pim_msdp_sa_timer_expiry_log(struct pim_msdp_sa *sa,
-					 const char *timer_str)
-{
-	zlog_debug("MSDP SA %s %s timer expired", sa->sg_str, timer_str);
-}
-
 /* RFC-3618:Sec-5.1 - global active source advertisement timer */
 static void pim_msdp_sa_adv_timer_cb(struct event *t)
 {
 	struct pim_instance *pim = EVENT_ARG(t);
 
-	if (PIM_DEBUG_MSDP_EVENTS) {
-		zlog_debug("MSDP SA advertisement timer expired");
-	}
+	if (pim_msdp_log_sa_events(pim))
+		zlog_info("MSDP SA advertisement timer expired");
 
 	pim_msdp_sa_adv_timer_setup(pim, true /* start */);
 	pim_msdp_pkt_sa_tx(pim);
@@ -83,9 +76,8 @@ static void pim_msdp_sa_state_timer_cb(struct event *t)
 
 	sa = EVENT_ARG(t);
 
-	if (PIM_DEBUG_MSDP_EVENTS) {
-		pim_msdp_sa_timer_expiry_log(sa, "state");
-	}
+	if (pim_msdp_log_sa_events(sa->pim))
+		zlog_info("MSDP SA %s state timer expired", sa->sg_str);
 
 	pim_msdp_sa_deref(sa, PIM_MSDP_SAF_PEER);
 }
@@ -120,9 +112,8 @@ static void pim_msdp_sa_upstream_del(struct pim_msdp_sa *sa)
 		sa->flags &= ~PIM_MSDP_SAF_UP_DEL_IN_PROG;
 	}
 
-	if (PIM_DEBUG_MSDP_EVENTS) {
-		zlog_debug("MSDP SA %s de-referenced SPT", sa->sg_str);
-	}
+	if (pim_msdp_log_sa_events(sa->pim))
+		zlog_info("MSDP SA %s de-referenced SPT", sa->sg_str);
 }
 
 static bool pim_msdp_sa_upstream_add_ok(struct pim_msdp_sa *sa,
@@ -185,10 +176,8 @@ static void pim_msdp_sa_upstream_update(struct pim_msdp_sa *sa,
 	if (up && (PIM_UPSTREAM_FLAG_TEST_SRC_MSDP(up->flags))) {
 		/* somehow we lost track of the upstream ptr? best log it */
 		sa->up = up;
-		if (PIM_DEBUG_MSDP_EVENTS) {
-			zlog_debug("MSDP SA %s SPT reference missing",
-				   sa->sg_str);
-		}
+		if (pim_msdp_log_sa_events(sa->pim))
+			zlog_info("MSDP SA %s SPT reference missing", sa->sg_str);
 		return;
 	}
 
@@ -204,14 +193,11 @@ static void pim_msdp_sa_upstream_update(struct pim_msdp_sa *sa,
 		/* should we also start the kat in parallel? we will need it
 		 * when the
 		 * SA ages out */
-		if (PIM_DEBUG_MSDP_EVENTS) {
-			zlog_debug("MSDP SA %s referenced SPT", sa->sg_str);
-		}
+		if (pim_msdp_log_sa_events(sa->pim))
+			zlog_info("MSDP SA %s referenced SPT", sa->sg_str);
 	} else {
-		if (PIM_DEBUG_MSDP_EVENTS) {
-			zlog_debug("MSDP SA %s SPT reference failed",
-				   sa->sg_str);
-		}
+		if (pim_msdp_log_sa_events(sa->pim))
+			zlog_info("MSDP SA %s SPT reference failed", sa->sg_str);
 	}
 }
 
@@ -240,9 +226,8 @@ static struct pim_msdp_sa *pim_msdp_sa_new(struct pim_instance *pim,
 	sa = hash_get(pim->msdp.sa_hash, sa, hash_alloc_intern);
 	listnode_add_sort(pim->msdp.sa_list, sa);
 
-	if (PIM_DEBUG_MSDP_EVENTS) {
-		zlog_debug("MSDP SA %s created", sa->sg_str);
-	}
+	if (pim_msdp_log_sa_events(pim))
+		zlog_info("MSDP SA %s created", sa->sg_str);
 
 	return sa;
 }
@@ -282,9 +267,8 @@ static void pim_msdp_sa_del(struct pim_msdp_sa *sa)
 	listnode_delete(sa->pim->msdp.sa_list, sa);
 	hash_release(sa->pim->msdp.sa_hash, sa);
 
-	if (PIM_DEBUG_MSDP_EVENTS) {
-		zlog_debug("MSDP SA %s deleted", sa->sg_str);
-	}
+	if (pim_msdp_log_sa_events(sa->pim))
+		zlog_info("MSDP SA %s deleted", sa->sg_str);
 
 	/* free up any associated memory */
 	pim_msdp_sa_free(sa);
@@ -333,10 +317,9 @@ static void pim_msdp_sa_deref(struct pim_msdp_sa *sa,
 
 	if ((sa->flags & PIM_MSDP_SAF_LOCAL)) {
 		if (flags & PIM_MSDP_SAF_LOCAL) {
-			if (PIM_DEBUG_MSDP_EVENTS) {
-				zlog_debug("MSDP SA %s local reference removed",
-					   sa->sg_str);
-			}
+			if (pim_msdp_log_sa_events(sa->pim))
+				zlog_info("MSDP SA %s local reference removed", sa->sg_str);
+
 			if (sa->pim->msdp.local_cnt)
 				--sa->pim->msdp.local_cnt;
 		}
@@ -346,10 +329,9 @@ static void pim_msdp_sa_deref(struct pim_msdp_sa *sa,
 		if (flags & PIM_MSDP_SAF_PEER) {
 			struct in_addr rp;
 
-			if (PIM_DEBUG_MSDP_EVENTS) {
-				zlog_debug("MSDP SA %s peer reference removed",
-					   sa->sg_str);
-			}
+			if (pim_msdp_log_sa_events(sa->pim))
+				zlog_info("MSDP SA %s peer reference removed", sa->sg_str);
+
 			pim_msdp_sa_state_timer_setup(sa, false /* start */);
 			rp.s_addr = INADDR_ANY;
 			pim_msdp_sa_peer_ip_set(sa, NULL /* mp */, rp);
@@ -386,10 +368,8 @@ void pim_msdp_sa_ref(struct pim_instance *pim, struct pim_msdp_peer *mp,
 	if (mp) {
 		if (!(sa->flags & PIM_MSDP_SAF_PEER)) {
 			sa->flags |= PIM_MSDP_SAF_PEER;
-			if (PIM_DEBUG_MSDP_EVENTS) {
-				zlog_debug("MSDP SA %s added by peer",
-					   sa->sg_str);
-			}
+			if (pim_msdp_log_sa_events(pim))
+				zlog_info("MSDP SA %s added by peer", sa->sg_str);
 		}
 		pim_msdp_sa_peer_ip_set(sa, mp, rp);
 		/* start/re-start the state timer to prevent cache expiry */
@@ -403,10 +383,9 @@ void pim_msdp_sa_ref(struct pim_instance *pim, struct pim_msdp_peer *mp,
 		if (!(sa->flags & PIM_MSDP_SAF_LOCAL)) {
 			sa->flags |= PIM_MSDP_SAF_LOCAL;
 			++sa->pim->msdp.local_cnt;
-			if (PIM_DEBUG_MSDP_EVENTS) {
-				zlog_debug("MSDP SA %s added locally",
-					   sa->sg_str);
-			}
+			if (pim_msdp_log_sa_events(pim))
+				zlog_info("MSDP SA %s added locally", sa->sg_str);
+
 			/* send an immediate SA update to peers */
 			pim_addr_to_prefix(&grp, sa->sg.grp);
 			rp_info = pim_rp_find_match_group(pim, &grp);
@@ -710,6 +689,9 @@ bool pim_msdp_peer_rpf_check(struct pim_msdp_peer *mp, struct in_addr rp)
 		return true;
 	}
 
+	if (pim_msdp_log_sa_events(mp->pim))
+		zlog_info("MSDP peer %pI4 RPF failure for %pI4", &mp->peer, &rp);
+
 	return false;
 }
 
@@ -1275,6 +1257,8 @@ int pim_msdp_config_write(struct pim_instance *pim, struct vty *vty)
 
 	if (pim_msdp_log_neighbor_events(pim))
 		vty_out(vty, " msdp log neighbor-events\n");
+	if (pim_msdp_log_sa_events(pim))
+		vty_out(vty, " msdp log sa-events\n");
 
 	if (SLIST_EMPTY(&pim->msdp.mglist))
 		return count;

pimd/pim_msdp_packet.c

@@ -487,9 +487,8 @@ static void pim_msdp_pkt_sa_gen(struct pim_instance *pim,
 		}
 
 		if (msdp_peer_sa_filter(mp, sa)) {
-			if (PIM_DEBUG_MSDP_EVENTS)
-				zlog_debug("MSDP peer %pI4 filter SA out %s",
-					   &mp->peer, sa->sg_str);
+			if (pim_msdp_log_sa_events(pim))
+				zlog_info("MSDP peer %pI4 filter SA out %s", &mp->peer, sa->sg_str);
 
 			continue;
 		}
@@ -551,9 +550,9 @@ void pim_msdp_pkt_sa_tx_one(struct pim_msdp_sa *sa)
 	pim_msdp_pkt_sa_fill_one(sa);
 	for (ALL_LIST_ELEMENTS_RO(sa->pim->msdp.peer_list, node, mp)) {
 		if (msdp_peer_sa_filter(mp, sa)) {
-			if (PIM_DEBUG_MSDP_EVENTS)
-				zlog_debug("MSDP peer %pI4 filter SA out %s",
-					   &mp->peer, sa->sg_str);
+			if (pim_msdp_log_sa_events(sa->pim))
+				zlog_info("MSDP peer %pI4 filter SA out %s", &mp->peer, sa->sg_str);
+
 			continue;
 		}
 
@@ -583,9 +582,10 @@ void pim_msdp_pkt_sa_tx_one_to_one_peer(struct pim_msdp_peer *mp,
 
 	/* Don't push it if filtered. */
 	if (msdp_peer_sa_filter(mp, &sa)) {
-		if (PIM_DEBUG_MSDP_EVENTS)
-			zlog_debug("MSDP peer %pI4 filter SA out (%pI4, %pI4)",
-				   &mp->peer, &sa.sg.src, &sa.sg.grp);
+		if (pim_msdp_log_sa_events(mp->pim))
+			zlog_info("MSDP peer %pI4 filter SA out (%pI4, %pI4)", &mp->peer,
+				  &sa.sg.src, &sa.sg.grp);
+
 		return;
 	}
 
@@ -641,11 +641,10 @@ static void pim_msdp_pkt_sa_rx_one(struct pim_msdp_peer *mp, struct in_addr rp)
 	/* Filter incoming SA with configured access list. */
 	if (mp->acl_in) {
 		acl = access_list_lookup(AFI_IP, mp->acl_in);
-		if (msdp_access_list_apply(acl, &sg.src, &sg.grp) ==
-		    FILTER_DENY) {
-			if (PIM_DEBUG_MSDP_EVENTS)
-				zlog_debug("MSDP peer %pI4 filter SA in (%pI4, %pI4)",
-					   &mp->peer, &sg.src, &sg.grp);
+		if (msdp_access_list_apply(acl, &sg.src, &sg.grp) == FILTER_DENY) {
+			if (pim_msdp_log_sa_events(mp->pim))
+				zlog_info("MSDP peer %pI4 filter SA in (%pI4, %pI4)", &mp->peer,
+					  &sg.src, &sg.grp);
 			return;
 		}
 	}

pimd/pim_nb.c

@@ -135,6 +135,12 @@ const struct frr_yang_module_info frr_pim_info = {
 				.modify = pim_msdp_log_neighbor_events_modify,
 			}
 		},
+		{
+			.xpath = "/frr-routing:routing/control-plane-protocols/control-plane-protocol/frr-pim:pim/address-family/msdp/log-sa-events",
+			.cbs = {
+				.modify = pim_msdp_log_sa_events_modify,
+			}
+		},
 		{
 			.xpath = "/frr-routing:routing/control-plane-protocols/control-plane-protocol/frr-pim:pim/address-family/msdp-mesh-groups",
 			.cbs = {

pimd/pim_nb.h

@@ -55,6 +55,7 @@ int pim_msdp_hold_time_modify(struct nb_cb_modify_args *args);
 int pim_msdp_keep_alive_modify(struct nb_cb_modify_args *args);
 int pim_msdp_connection_retry_modify(struct nb_cb_modify_args *args);
 int pim_msdp_log_neighbor_events_modify(struct nb_cb_modify_args *args);
+int pim_msdp_log_sa_events_modify(struct nb_cb_modify_args *args);
 int pim_msdp_mesh_group_create(struct nb_cb_create_args *args);
 int pim_msdp_mesh_group_destroy(struct nb_cb_destroy_args *args);
 int pim_msdp_mesh_group_members_create(struct nb_cb_create_args *args);

pimd/pim_nb_config.c

@@ -1065,6 +1065,7 @@ pim6_msdp_err(pim_msdp_peer_authentication_type_modify, nb_cb_modify_args);
 pim6_msdp_err(pim_msdp_peer_authentication_key_modify, nb_cb_modify_args);
 pim6_msdp_err(pim_msdp_peer_authentication_key_destroy, nb_cb_destroy_args);
 pim6_msdp_err(pim_msdp_log_neighbor_events_modify, nb_cb_modify_args);
+pim6_msdp_err(pim_msdp_log_sa_events_modify, nb_cb_modify_args);
 
 #if PIM_IPV != 6
 /*
@@ -1096,6 +1097,35 @@ int pim_msdp_log_neighbor_events_modify(struct nb_cb_modify_args *args)
 	return NB_OK;
 }
 
+/*
+ * XPath:
+ * /frr-routing:routing/control-plane-protocols/control-plane-protocol/frr-pim:pim/address-family/msdp/log-sa-events
+ */
+int pim_msdp_log_sa_events_modify(struct nb_cb_modify_args *args)
+{
+	struct pim_instance *pim;
+	struct vrf *vrf;
+
+	switch (args->event) {
+	case NB_EV_VALIDATE:
+	case NB_EV_PREPARE:
+	case NB_EV_ABORT:
+		/* NOTHING */
+		break;
+
+	case NB_EV_APPLY:
+		vrf = nb_running_get_entry(args->dnode, NULL, true);
+		pim = vrf->info;
+		if (yang_dnode_get_bool(args->dnode, NULL))
+			SET_FLAG(pim->log_flags, PIM_MSDP_LOG_SA_EVENTS);
+		else
+			UNSET_FLAG(pim->log_flags, PIM_MSDP_LOG_SA_EVENTS);
+		break;
+	}
+
+	return NB_OK;
+}
+
 /*
  * XPath:
  * /frr-routing:routing/control-plane-protocols/control-plane-protocol/frr-pim:pim/address-family/msdp-mesh-groups

yang/frr-pim.yang

@@ -257,6 +257,13 @@ module frr-pim {
         description
           "Log all MSDP neighbor related events.";
       }
+
+      leaf log-sa-events {
+        type boolean;
+        default false;
+        description
+          "Log all MSDP SA related events.";
+      }
     }
 
     list msdp-mesh-groups {