[v4,04/18] opensm: Track the minimum value in the fabric of data VLs supported.

Commit Message

Jim Schutt Sept. 3, 2010, 4:43 p.m. UTC

None

Patch

diff --git a/opensm/include/opensm/osm_subnet.h b/opensm/include/opensm/osm_subnet.h
index 95a635c..4fa0161 100644
--- a/opensm/include/opensm/osm_subnet.h
+++ b/opensm/include/opensm/osm_subnet.h
@@ -536,6 +536,7 @@  typedef struct osm_subn {
 	uint16_t max_mcast_lid_ho;
 	uint8_t min_ca_mtu;
 	uint8_t min_ca_rate;
+	uint8_t min_data_vls;
 	boolean_t ignore_existing_lfts;
 	boolean_t subnet_initialization_error;
 	boolean_t force_heavy_sweep;
diff --git a/opensm/opensm/osm_port_info_rcv.c b/opensm/opensm/osm_port_info_rcv.c
index 9260047..c05301e 100644
--- a/opensm/opensm/osm_port_info_rcv.c
+++ b/opensm/opensm/osm_port_info_rcv.c
@@ -83,6 +83,7 @@  static void pi_rcv_process_endport(IN osm_sm_t * sm, IN osm_physp_t * p_physp,
 	ib_api_status_t status;
 	ib_net64_t port_guid;
 	uint8_t rate, mtu;
+	unsigned data_vls;
 	cl_qmap_t *p_sm_tbl;
 	osm_remote_sm_t *p_sm;
 
@@ -92,7 +93,7 @@  static void pi_rcv_process_endport(IN osm_sm_t * sm, IN osm_physp_t * p_physp,
 
 	/* HACK extended port 0 should be handled too! */
 	if (osm_physp_get_port_num(p_physp) != 0) {
-		/* track the minimal endport MTU and rate */
+		/* track the minimal endport MTU, rate, and operational VLs */
 		mtu = ib_port_info_get_mtu_cap(p_pi);
 		if (mtu < sm->p_subn->min_ca_mtu) {
 			OSM_LOG(sm->p_log, OSM_LOG_VERBOSE,
@@ -108,6 +109,16 @@  static void pi_rcv_process_endport(IN osm_sm_t * sm, IN osm_physp_t * p_physp,
 				PRIx64 "\n", rate, cl_ntoh64(port_guid));
 			sm->p_subn->min_ca_rate = rate;
 		}
+
+		data_vls = 1U << (ib_port_info_get_op_vls(p_pi) - 1);
+		if (data_vls >= IB_MAX_NUM_VLS)
+			data_vls = IB_MAX_NUM_VLS - 1;
+		if ((uint8_t)data_vls < sm->p_subn->min_data_vls) {
+			OSM_LOG(sm->p_log, OSM_LOG_VERBOSE,
+				"Setting endport minimal data VLs to:%u defined by port:0x%"
+				PRIx64 "\n", data_vls, cl_ntoh64(port_guid));
+			sm->p_subn->min_data_vls = data_vls;
+		}
 	}
 
 	if (port_guid != sm->p_subn->sm_port_guid) {
diff --git a/opensm/opensm/osm_state_mgr.c b/opensm/opensm/osm_state_mgr.c
index a3d09d8..bb60636 100644
--- a/opensm/opensm/osm_state_mgr.c
+++ b/opensm/opensm/osm_state_mgr.c
@@ -1171,6 +1171,12 @@  repeat_discovery:
 	sm->p_subn->force_reroute = FALSE;
 	sm->p_subn->subnet_initialization_error = FALSE;
 
+	/* Reset tracking values in case limiting component got removed
+	 * from fabric. */
+	sm->p_subn->min_ca_mtu = IB_MAX_MTU;
+	sm->p_subn->min_ca_rate = IB_MAX_RATE;
+	sm->p_subn->min_data_vls = IB_MAX_NUM_VLS - 1;
+
 	/* rescan configuration updates */
 	if (!config_parsed && osm_subn_rescan_conf_files(sm->p_subn) < 0)
 		OSM_LOG(sm->p_log, OSM_LOG_ERROR, "ERR 331A: "
diff --git a/opensm/opensm/osm_subnet.c b/opensm/opensm/osm_subnet.c
index d5c5ab2..8224b5f 100644
--- a/opensm/opensm/osm_subnet.c
+++ b/opensm/opensm/osm_subnet.c
@@ -529,6 +529,7 @@  ib_api_status_t osm_subn_init(IN osm_subn_t * p_subn, IN osm_opensm_t * p_osm,
 	p_subn->max_mcast_lid_ho = IB_LID_MCAST_END_HO;
 	p_subn->min_ca_mtu = IB_MAX_MTU;
 	p_subn->min_ca_rate = IB_MAX_RATE;
+	p_subn->min_data_vls = IB_MAX_NUM_VLS - 1;
 	p_subn->ignore_existing_lfts = TRUE;
 
 	/* we assume master by default - so we only need to set it true if STANDBY */