[PATCH v2 2/4 infiniband-diags] ibqueryerrors: Close global file descriptor before running ibnd_discover_fabric

[Hal Rosenstock <hal@xxxxxxxxxxxxxxxxxx>]

From: Vladimir Koushnir <vladimirk@xxxxxxxxxxxx>
Date: Sun, 26 Apr 2015 12:24:06 +0300

Global file descriptor for SMPs and GMPs should be closed before running
ibnd_discover_fabric() to avoid parallel usage of two SMP file descriptors

Signed-off-by: Vladimir Koushnir <vladimirk@xxxxxxxxxxxx>
Signed-off-by: Hal Rosenstock <hal@xxxxxxxxxxxx>
---
Changes since v1:
Fixed direct route (-D) option

diff --git a/src/ibqueryerrors.c b/src/ibqueryerrors.c
index 06fcbac..80436d3 100644
--- a/src/ibqueryerrors.c
+++ b/src/ibqueryerrors.c
@@ -1000,18 +1002,20 @@ int main(int argc, char **argv)
 	config.flags = ibd_ibnetdisc_flags;
 	config.mkey = ibd_mkey;
 
-	node_name_map = open_node_name_map(node_name_map_file);
-
 	if (dr_path && load_cache_file) {
+		mad_rpc_close_port(ibmad_port);
 		fprintf(stderr, "Cannot specify cache and direct route path\n");
 		exit(-1);
 	}
 
 	if (resolve_self(ibd_ca, ibd_ca_port, &self_portid, &port, &self_gid.raw) < 0) {
+		mad_rpc_close_port(ibmad_port);
 		IBEXIT("can't resolve self port %s", argv[0]);
 		goto close_port;
 	}
 
+	node_name_map = open_node_name_map(node_name_map_file);
+
 	/* limit the scan the fabric around the target */
 	if (dr_path) {
 		if ((resolved =
@@ -1030,10 +1034,13 @@ int main(int argc, char **argv)
 			lid2sl_table[portid.lid] = portid.sl;
 	}
 
+	mad_rpc_close_port(ibmad_port);
+
 	if (load_cache_file) {
 		if ((fabric = ibnd_load_fabric(load_cache_file, 0)) == NULL) {
 			fprintf(stderr, "loading cached fabric failed\n");
-			exit(-1);
+			rc = -1;
+			goto close_port;
 		}
 	} else {
 		if (resolved >= 0) {
@@ -1057,6 +1064,21 @@ int main(int argc, char **argv)
 
 	set_thresholds(threshold_file);
 
+	/* reopen the global ibmad_port */
+	ibmad_port = mad_rpc_open_port(ibd_ca, ibd_ca_port,
+				       mgmt_classes, 4);
+	if (!ibmad_port) {
+		ibnd_destroy_fabric(fabric);
+		close_node_name_map(node_name_map);
+		IBEXIT("Failed to reopen port: %s:%d\n",
+			ibd_ca, ibd_ca_port);
+	}
+
+	smp_mkey_set(ibmad_port, ibd_mkey);
+
+	if (ibd_timeout)
+		mad_rpc_set_timeout(ibmad_port, ibd_timeout);
+
 	if (port_guid_str) {
 		ibnd_port_t *port = ibnd_find_port_guid(fabric, port_guid);
 		if (port)
@@ -1067,12 +1089,12 @@ int main(int argc, char **argv)
 	} else if (dr_path) {
 		ibnd_port_t *port = ibnd_find_port_dr(fabric, dr_path);
 		uint8_t ni[IB_SMP_DATA_SIZE] = { 0 };
-
 		if (!smp_query_via(ni, &portid, IB_ATTR_NODE_INFO, 0,
-				   ibd_timeout, ibmad_port)) {
-			rc = -1;
-			goto destroy_fabric;
+			   ibd_timeout, ibmad_port)) {
+				fprintf(stderr, "Failed to query local Node Info\n");
+				goto destroy_fabric;
 		}
+
 		mad_decode_field(ni, IB_NODE_PORT_GUID_F, &(port_guid));
 
 		port = ibnd_find_port_guid(fabric, port_guid);
@@ -1087,6 +1109,7 @@ int main(int argc, char **argv)
 		if(obtain_sl)
 			if(path_record_query(self_gid,0))
 				goto destroy_fabric;
+
 		ibnd_iter_nodes(fabric, print_node, NULL);
 	}
 
@@ -1095,10 +1118,10 @@ int main(int argc, char **argv)
 		rc = 1;
 
 destroy_fabric:
+	mad_rpc_close_port(ibmad_port);
 	ibnd_destroy_fabric(fabric);
 
 close_port:
-	mad_rpc_close_port(ibmad_port);
 	close_node_name_map(node_name_map);
 	exit(rc);
 }
-- 
1.7.8.2

--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html