Re: [PATCH V3 01/06] opensm/perfmgr: issue ClassPortInfo as first query to each port.

[Hal Rosenstock <hal-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>]

On 2/28/2013 1:03 AM, Ira Weiny wrote:
> 
> Changes from V1:
> 	Fix spacing
> Changes from V2:
> 	Add option to disable query.
> 
> Signed-off-by: Ira Weiny <weiny2-i2BcT+NCU+M@public.gmane.org>
> ---
>  include/opensm/osm_perfmgr.h |   15 +++
>  include/opensm/osm_subnet.h  |    1 +
>  opensm/osm_console.c         |   13 ++-
>  opensm/osm_perfmgr.c         |  230 +++++++++++++++++++++++++++++++++--------
>  opensm/osm_subnet.c          |    9 ++-
>  5 files changed, 220 insertions(+), 48 deletions(-)
> 
> diff --git a/include/opensm/osm_perfmgr.h b/include/opensm/osm_perfmgr.h
> index 26b1ae6..fddd687 100644
> --- a/include/opensm/osm_perfmgr.h
> +++ b/include/opensm/osm_perfmgr.h
> @@ -100,6 +100,9 @@ typedef struct monitored_port {
>  	ib_net16_t lid;
>  	ib_net16_t pkey;
>  	ib_net32_t qp;
> +	/* ClassPortInfo fields */
> +	boolean_t cpi_valid;
> +	ib_net16_t cap_mask;
>  } monitored_port_t;
>  
>  /* Node to store information about nodes being monitored */
> @@ -107,6 +110,7 @@ typedef struct monitored_node {
>  	cl_map_item_t map_item;
>  	struct monitored_node *next;
>  	uint64_t guid;
> +	uint8_t node_type;
>  	boolean_t esp0;
>  	char *name;
>  	uint32_t num_ports;
> @@ -144,6 +148,7 @@ typedef struct osm_perfmgr {
>  	ib_net64_t port_guid;
>  	int16_t local_port;
>  	int rm_nodes;
> +	boolean_t query_cpi;
>  } osm_perfmgr_t;
>  /*
>  * FIELDS
> @@ -191,6 +196,16 @@ inline static int osm_perfmgr_get_rm_nodes(osm_perfmgr_t *perfmgr)
>  	return perfmgr->rm_nodes;
>  }
>  
> +inline static void osm_perfmgr_set_query_cpi(osm_perfmgr_t *perfmgr,
> +					    int query_cpi)
> +{
> +	perfmgr->query_cpi = query_cpi;
> +}
> +inline static int osm_perfmgr_get_query_cpi(osm_perfmgr_t *perfmgr)
> +{
> +	return perfmgr->query_cpi;
> +}
> +
>  inline static const char *osm_perfmgr_get_state_str(osm_perfmgr_t * p_perfmgr)
>  {
>  	switch (p_perfmgr->state) {
> diff --git a/include/opensm/osm_subnet.h b/include/opensm/osm_subnet.h
> index 36c18a9..f0a0a11 100644
> --- a/include/opensm/osm_subnet.h
> +++ b/include/opensm/osm_subnet.h
> @@ -356,6 +356,7 @@ typedef struct osm_subn_opt {
>  	char *event_db_dump_file;
>  	int perfmgr_rm_nodes;
>  	boolean_t perfmgr_log_errors;
> +	boolean_t perfmgr_query_cpi;
>  #endif				/* ENABLE_OSM_PERF_MGR */
>  	char *event_plugin_name;
>  	char *event_plugin_options;
> diff --git a/opensm/osm_console.c b/opensm/osm_console.c
> index 600007c..1da4d81 100644
> --- a/opensm/osm_console.c
> +++ b/opensm/osm_console.c
> @@ -242,6 +242,7 @@ static void help_perfmgr(FILE * out, int detail)
>  		"perfmgr(pm) [enable|disable\n"
>  		"             |clear_counters|dump_counters|print_counters(pc)|print_errors(pe)\n"
>  		"             |set_rm_nodes|clear_rm_nodes|clear_inactive\n"
> +		"             |set_query_cpi|clear_query_cpi\n"
>  		"             |dump_redir|clear_redir\n"
>  		"             |sweep|sweep_time[seconds]]\n");
>  	if (detail) {
> @@ -275,6 +276,9 @@ static void help_perfmgr(FILE * out, int detail)
>  			"   [[set|clear]_rm_nodes] -- enable/disable the removal of \"inactive\" nodes from the DB\n"
>  			"                             Inactive nodes are those which no longer appear on the fabric\n");
>  		fprintf(out,
> +			"   [[set|clear]_query_cpi] -- enable/disable PerfMgrGet(ClassPortInfo)\n"
> +			"                             ClassPortInfo indicates hardware support for extended attributes such as PortCountersExtended\n");
> +		fprintf(out,
>  			"   [clear_inactive] -- Delete inactive nodes from the DB\n");
>  	}
>  }
> @@ -1469,6 +1473,10 @@ static void perfmgr_parse(char **p_last, osm_opensm_t * p_osm, FILE * out)
>  			osm_perfmgr_set_rm_nodes(&p_osm->perfmgr, 1);
>  		} else if (strcmp(p_cmd, "clear_rm_nodes") == 0) {
>  			osm_perfmgr_set_rm_nodes(&p_osm->perfmgr, 0);
> +		} else if (strcmp(p_cmd, "set_query_cpi") == 0) {
> +			osm_perfmgr_set_query_cpi(&p_osm->perfmgr, 1);
> +		} else if (strcmp(p_cmd, "clear_query_cpi") == 0) {
> +			osm_perfmgr_set_query_cpi(&p_osm->perfmgr, 0);
>  		} else if (strcmp(p_cmd, "dump_counters") == 0) {
>  			p_cmd = next_token(p_last);
>  			if (p_cmd && (strcmp(p_cmd, "mach") == 0)) {
> @@ -1536,13 +1544,16 @@ static void perfmgr_parse(char **p_last, osm_opensm_t * p_osm, FILE * out)
>  			"sweep state                  : %s\n"
>  			"sweep time                   : %us\n"
>  			"outstanding queries/max      : %d/%u\n"
> -			"remove missing nodes from DB : %s\n",
> +			"remove missing nodes from DB : %s\n"
> +			"query ClassPortInfo          : %s\n",
>  			osm_perfmgr_get_state_str(&p_osm->perfmgr),
>  			osm_perfmgr_get_sweep_state_str(&p_osm->perfmgr),
>  			osm_perfmgr_get_sweep_time_s(&p_osm->perfmgr),
>  			p_osm->perfmgr.outstanding_queries,
>  			p_osm->perfmgr.max_outstanding_queries,
>  			osm_perfmgr_get_rm_nodes(&p_osm->perfmgr)
> +						 ? "TRUE" : "FALSE",
> +			osm_perfmgr_get_query_cpi(&p_osm->perfmgr)
>  						 ? "TRUE" : "FALSE");
>  	}
>  }
> diff --git a/opensm/osm_perfmgr.c b/opensm/osm_perfmgr.c
> index cfcd197..79e5fce 100644
> --- a/opensm/osm_perfmgr.c
> +++ b/opensm/osm_perfmgr.c
> @@ -356,17 +356,20 @@ static ib_net16_t get_lid(osm_node_t * p_node, uint8_t port,
>  	return get_base_lid(p_node, port);
>  }
>  
> +
>  /**********************************************************************
> - * Form and send the Port Counters MAD for a single port.
> + * Build a Performance Management class MAD
>   **********************************************************************/
> -static ib_api_status_t perfmgr_send_pc_mad(osm_perfmgr_t * perfmgr,
> -					   ib_net16_t dest_lid,
> -					   ib_net32_t dest_qp, uint16_t pkey_ix,
> -					   uint8_t port, uint8_t mad_method,
> -					   osm_madw_context_t * p_context)
> +static osm_madw_t *perfmgr_build_mad(osm_perfmgr_t * perfmgr,
> +				     ib_net16_t dest_lid,
> +				     uint8_t sl,
> +				     ib_net32_t dest_qp,
> +				     uint16_t pkey_ix,
> +				     uint8_t mad_method,
> +				     ib_net16_t attr_id,
> +				     osm_madw_context_t * p_context,
> +				     ib_perfmgt_mad_t ** p_pm_mad)
>  {
> -	ib_api_status_t status = IB_SUCCESS;
> -	ib_port_counters_t *port_counter = NULL;
>  	ib_perfmgt_mad_t *pm_mad = NULL;
>  	osm_madw_t *p_madw = NULL;
>  
> @@ -375,7 +378,7 @@ static ib_api_status_t perfmgr_send_pc_mad(osm_perfmgr_t * perfmgr,
>  	p_madw = osm_mad_pool_get(perfmgr->mad_pool, perfmgr->bind_handle,
>  				  MAD_BLOCK_SIZE, NULL);
>  	if (p_madw == NULL)
> -		return IB_INSUFFICIENT_MEMORY;
> +		return NULL;
>  
>  	pm_mad = osm_madw_get_perfmgt_mad_ptr(p_madw);
>  
> @@ -393,29 +396,38 @@ static ib_api_status_t perfmgr_send_pc_mad(osm_perfmgr_t * perfmgr,
>  		pm_mad->header.trans_id =
>  		    cl_hton64((uint64_t) cl_atomic_inc(&perfmgr->trans_id) &
>  			      (uint64_t) (0xFFFFFFFF));
> -	pm_mad->header.attr_id = IB_MAD_ATTR_PORT_CNTRS;
> +	pm_mad->header.attr_id = attr_id;
>  	pm_mad->header.resv = 0;
>  	pm_mad->header.attr_mod = 0;
>  
> -	port_counter = (ib_port_counters_t *) & pm_mad->data;
> -	memset(port_counter, 0, sizeof(*port_counter));
> -	port_counter->port_select = port;
> -	port_counter->counter_select = 0xFFFF;
> -
>  	p_madw->mad_addr.dest_lid = dest_lid;
>  	p_madw->mad_addr.addr_type.gsi.remote_qp = dest_qp;
>  	p_madw->mad_addr.addr_type.gsi.remote_qkey =
>  	    cl_hton32(IB_QP1_WELL_KNOWN_Q_KEY);
>  	p_madw->mad_addr.addr_type.gsi.pkey_ix = pkey_ix;
> -	p_madw->mad_addr.addr_type.gsi.service_level = 0;
> +	p_madw->mad_addr.addr_type.gsi.service_level = sl;
>  	p_madw->mad_addr.addr_type.gsi.global_route = FALSE;
>  	p_madw->resp_expected = TRUE;
>  
>  	if (p_context)
>  		p_madw->context = *p_context;
>  
> -	status = osm_vendor_send(perfmgr->bind_handle, p_madw, TRUE);
> +	if (p_pm_mad)
> +		*p_pm_mad = pm_mad;
> +
> +	OSM_LOG_EXIT(perfmgr->log);
> +
> +	return (p_madw);
> +}
>  
> +/**********************************************************************
> + * Send a Performance Management class MAD
> + **********************************************************************/
> +static ib_api_status_t perfmgr_send_mad(osm_perfmgr_t *perfmgr,
> +					osm_madw_t * const p_madw)
> +{
> +	ib_api_status_t status = osm_vendor_send(perfmgr->bind_handle, p_madw,
> +						 TRUE);
>  	if (status == IB_SUCCESS) {
>  		/* pause thread if there are too many outstanding requests */
>  		cl_atomic_inc(&(perfmgr->outstanding_queries));
> @@ -427,6 +439,39 @@ static ib_api_status_t perfmgr_send_pc_mad(osm_perfmgr_t * perfmgr,
>  		}
>  		perfmgr->sweep_state = PERFMGR_SWEEP_ACTIVE;
>  	}
> +	return (status);
> +}
> +
> +
> +/**********************************************************************
> + * Form and send the PortCounters MAD for a single port.
> + **********************************************************************/
> +static ib_api_status_t perfmgr_send_pc_mad(osm_perfmgr_t * perfmgr,
> +					   ib_net16_t dest_lid,
> +					   ib_net32_t dest_qp, uint16_t pkey_ix,
> +					   uint8_t port, uint8_t mad_method,
> +					   osm_madw_context_t * p_context,
> +					   uint8_t sl)
> +{
> +	ib_api_status_t status = IB_SUCCESS;
> +	ib_port_counters_t *port_counter = NULL;
> +	ib_perfmgt_mad_t *pm_mad = NULL;
> +	osm_madw_t *p_madw = NULL;
> +
> +	OSM_LOG_ENTER(perfmgr->log);
> +
> +	p_madw = perfmgr_build_mad(perfmgr, dest_lid, sl, dest_qp, pkey_ix,
> +				mad_method, IB_MAD_ATTR_PORT_CNTRS, p_context,
> +				&pm_mad);
> +	if (p_madw == NULL)
> +		return IB_INSUFFICIENT_MEMORY;
> +
> +	port_counter = (ib_port_counters_t *) & pm_mad->data;
> +	memset(port_counter, 0, sizeof(*port_counter));
> +	port_counter->port_select = port;
> +	port_counter->counter_select = 0xFFFF;
> +
> +	status = perfmgr_send_mad(perfmgr, p_madw);
>  
>  	OSM_LOG_EXIT(perfmgr->log);
>  	return status;
> @@ -469,6 +514,7 @@ static void collect_guids(cl_map_item_t * p_map_item, void *context)
>  		mon_node->guid = node_guid;
>  		mon_node->name = strdup(node->print_desc);
>  		mon_node->num_ports = num_ports;
> +		mon_node->node_type = node->node_info.node_type;
>  		/* check for enhanced switch port 0 */
>  		mon_node->esp0 = (node->sw &&
>  				  ib_switch_info_is_enhanced_port0(&node->sw->
> @@ -491,6 +537,35 @@ Exit:
>  }
>  
>  /**********************************************************************
> + * Form and send the ClassPortInfo MAD for a single port.
> + **********************************************************************/
> +static ib_api_status_t perfmgr_send_cpi_mad(osm_perfmgr_t * pm,
> +					    ib_net16_t dest_lid,
> +					    ib_net32_t dest_qp,
> +					    uint16_t pkey_ix,
> +					    uint8_t port,
> +					    osm_madw_context_t * p_context,
> +					    uint8_t sl)
> +{
> +	ib_api_status_t status = IB_SUCCESS;
> +	osm_madw_t *p_madw = NULL;
> +
> +	OSM_LOG_ENTER(pm->log);
> +
> +	p_madw = perfmgr_build_mad(pm, dest_lid, sl, dest_qp,
> +				   pkey_ix, IB_MAD_METHOD_GET,
> +				   IB_MAD_ATTR_CLASS_PORT_INFO, p_context,
> +				   NULL);
> +	if (p_madw == NULL)
> +		return IB_INSUFFICIENT_MEMORY;
> +
> +	status = perfmgr_send_mad(pm, p_madw);
> +
> +	OSM_LOG_EXIT(pm->log);
> +	return status;
> +}
> +
> +/**********************************************************************
>   * query the Port Counters of all the nodes in the subnet.
>   **********************************************************************/
>  static void perfmgr_query_counters(cl_map_item_t * p_map_item, void *context)
> @@ -557,22 +632,42 @@ static void perfmgr_query_counters(cl_map_item_t * p_map_item, void *context)
>  		mad_context.perfmgr_context.node_guid = node_guid;
>  		mad_context.perfmgr_context.port = port;
>  		mad_context.perfmgr_context.mad_method = IB_MAD_METHOD_GET;
> +
> +		if (pm->query_cpi && !mon_node->port[port].cpi_valid) {
> +			status = perfmgr_send_cpi_mad(pm, lid, remote_qp,
> +						mon_node->port[port].pkey_ix,
> +						port, &mad_context,
> +						0); /* FIXME SL != 0 */
> +			if (status != IB_SUCCESS)
> +				OSM_LOG(pm->log, OSM_LOG_ERROR, "ERR 5410: "
> +					"Failed to issue ClassPortInfo query "
> +					"for node 0x%" PRIx64
> +					" port %d (%s)\n",
> +					node->node_info.node_guid, port,
> +					node->print_desc);
> +			if (mon_node->node_type == IB_NODE_TYPE_SWITCH)
> +				goto Exit; /* only need to issue 1 CPI query
> +						for switches */
> +		} else {
> +
>  #ifdef ENABLE_OSM_PERF_MGR_PROFILE
> -		gettimeofday(&mad_context.perfmgr_context.query_start, NULL);
> +			gettimeofday(&mad_context.perfmgr_context.query_start, NULL);
>  #endif
> -		OSM_LOG(pm->log, OSM_LOG_VERBOSE, "Getting stats for node 0x%"
> -			PRIx64 " port %d (lid %u) (%s)\n", node_guid, port,
> -			cl_ntoh16(lid), node->print_desc);
> -		status = perfmgr_send_pc_mad(pm, lid, remote_qp,
> -					     mon_node->port[port].pkey_ix,
> -					     port, IB_MAD_METHOD_GET,
> -					     &mad_context);
> -		if (status != IB_SUCCESS)
> -			OSM_LOG(pm->log, OSM_LOG_ERROR, "ERR 5409: "
> -				"Failed to issue port counter query for node 0x%"
> -				PRIx64 " port %d (%s)\n",
> -				node->node_info.node_guid, port,
> -				node->print_desc);
> +			OSM_LOG(pm->log, OSM_LOG_VERBOSE, "Getting stats for node 0x%"
> +				PRIx64 " port %d (lid %u) (%s)\n", node_guid, port,
> +				cl_ntoh16(lid), node->print_desc);
> +			status = perfmgr_send_pc_mad(pm, lid, remote_qp,
> +						     mon_node->port[port].pkey_ix,
> +						     port, IB_MAD_METHOD_GET,
> +						     &mad_context,
> +						     0); /* FIXME SL != 0 */
> +			if (status != IB_SUCCESS)
> +				OSM_LOG(pm->log, OSM_LOG_ERROR, "ERR 5409: "
> +					"Failed to issue port counter query for node 0x%"
> +					PRIx64 " port %d (%s)\n",
> +					node->node_info.node_guid, port,
> +					node->print_desc);
> +		}
>  	}
>  Exit:
>  	cl_plock_release(&pm->osm->lock);
> @@ -1055,7 +1150,8 @@ static void perfmgr_check_overflow(osm_perfmgr_t * pm,
>  		/* clear port counters */
>  		status = perfmgr_send_pc_mad(pm, lid, remote_qp, pkey_ix,
>  					     port, IB_MAD_METHOD_SET,
> -					     &mad_context);
> +					     &mad_context,
> +					     0); /* FIXME SL != 0 */
>  		if (status != IB_SUCCESS)
>  			OSM_LOG(pm->log, OSM_LOG_ERROR, "PerfMgr: ERR 5411: "
>  				"Failed to send clear counters MAD for %s (0x%"
> @@ -1189,6 +1285,7 @@ static void pc_recv_process(void *context, void *data)
>  	monitored_node_t *p_mon_node;
>  	int16_t pkey_ix = 0;
>  	boolean_t valid = TRUE;
> +	ib_class_port_info_t *cpi = NULL;
>  
>  	OSM_LOG_ENTER(pm->log);
>  
> @@ -1211,15 +1308,49 @@ static void pc_recv_process(void *context, void *data)
>  	CL_ASSERT(p_mad->attr_id == IB_MAD_ATTR_PORT_CNTRS ||
>  		  p_mad->attr_id == IB_MAD_ATTR_CLASS_PORT_INFO);
>  
> +	cl_plock_acquire(&pm->osm->lock);
> +	/* validate port number */
> +	if (port >= p_mon_node->num_ports) {
> +		cl_plock_release(&pm->osm->lock);
> +		OSM_LOG(pm->log, OSM_LOG_ERROR, "ERR 5413: "
> +			"Invalid port num %d for GUID 0x%016"
> +			PRIx64 " num ports %d\n", port, node_guid,
> +			p_mon_node->num_ports);
> +		goto Exit;
> +	}
> +	cl_plock_release(&pm->osm->lock);

Locking in pc_recv_process can be improved to take and release lock once
but that can be a separate patch.

> +
> +	/* capture CLASS_PORT_INFO data */
> +	if (p_mad->attr_id == IB_MAD_ATTR_CLASS_PORT_INFO) {
> +		cpi = (ib_class_port_info_t *) &
> +		    (osm_madw_get_perfmgt_mad_ptr(p_madw)->data);
> +
> +		if (pm->query_cpi) {
> +			cl_plock_acquire(&pm->osm->lock);
> +			if (p_mon_node->node_type == IB_NODE_TYPE_SWITCH) {
> +				int i = 0;
> +				for (i = p_mon_node->esp0 ? 0 : 1;
> +				     i < p_mon_node->num_ports;
> +				     i++) {
> +					p_mon_node->port[i].cap_mask = cpi->cap_mask;
> +					p_mon_node->port[i].cpi_valid = TRUE;
> +				}
> +			} else {
> +				p_mon_node->port[port].cap_mask = cpi->cap_mask;
> +				p_mon_node->port[port].cpi_valid = TRUE;
> +			}
> +			cl_plock_release(&pm->osm->lock);
> +		}
> +	}
> +
>  	/* Response could also be redirection (IBM eHCA PMA does this) */
> -	if (p_mad->status & IB_MAD_STATUS_REDIRECT &&
> -	    p_mad->attr_id == IB_MAD_ATTR_CLASS_PORT_INFO) {
> +	if (p_mad->status & IB_MAD_STATUS_REDIRECT) {

We already discussed this minor change to existing flow and it's
resolved in next patch in series.

>  		char gid_str[INET6_ADDRSTRLEN];
> -		ib_class_port_info_t *cpi =
> -		    (ib_class_port_info_t *) &
> -		    (osm_madw_get_perfmgt_mad_ptr(p_madw)->data);
>  		ib_api_status_t status;
>  
> +		CL_ASSERT(cpi); /* Redirect should have returned CPI
> +					(processed in previous block) */
> +
>  		OSM_LOG(pm->log, OSM_LOG_VERBOSE,
>  			"Redirection to LID %u GID %s QP 0x%x received\n",
>  			cl_ntoh16(cpi->redir_lid),
> @@ -1294,20 +1425,28 @@ static void pc_recv_process(void *context, void *data)
>  		if (!valid)
>  			goto Exit;
>  
> -		/* Finally, reissue the query to the redirected location */
> -		status = perfmgr_send_pc_mad(pm, cpi->redir_lid, cpi->redir_qp,
> -					     pkey_ix, port,
> -					     mad_context->perfmgr_context.
> -					     mad_method, mad_context);
> +		/* Finally, issue a CPI query to the redirected location */
> +		p_mon_node->port[port].cpi_valid = FALSE;
> +		status = perfmgr_send_cpi_mad(pm, cpi->redir_lid,
> +					      cpi->redir_qp, pkey_ix,
> +					      port, mad_context,
> +					      0); /* FIXME SL != 0 */

In the case of !query_cpi, this should query original attribute at the
redirected location rather than ClassPortInfo (first) to preserve
current flow.

-- Hal

>  		if (status != IB_SUCCESS)
>  			OSM_LOG(pm->log, OSM_LOG_ERROR, "ERR 5414: "
> -				"Failed to send redirected MAD with method 0x%x for node 0x%"
> -				PRIx64 " port %d\n",
> +				"Failed to send redirected MAD "
> +				"with method 0x%x for node %s "
> +				"(NodeGuid 0x%" PRIx64 ") port %d\n",
>  				mad_context->perfmgr_context.mad_method,
> -				node_guid, port);
> +				p_mon_node->name, node_guid, port);
>  		goto Exit;
>  	}
>  
> +	/* ClassPortInfo needed to process optional Redirection
> +	 * now exit normally
> +	 */
> +	if (p_mad->attr_id == IB_MAD_ATTR_CLASS_PORT_INFO)
> +		goto Exit;
> +
>  	perfmgr_db_fill_err_read(wire_read, &err_reading);
>  	/* FIXME separate query for extended counters if they are supported
>  	 * on the port.
> @@ -1405,6 +1544,7 @@ ib_api_status_t osm_perfmgr_init(osm_perfmgr_t * pm, osm_opensm_t * osm,
>  		cl_timer_start(&pm->sweep_timer, pm->sweep_time_s * 1000);
>  
>  	pm->rm_nodes = p_opt->perfmgr_rm_nodes;
> +	pm->query_cpi = p_opt->perfmgr_query_cpi;
>  	status = IB_SUCCESS;
>  Exit:
>  	OSM_LOG_EXIT(pm->log);
> diff --git a/opensm/osm_subnet.c b/opensm/osm_subnet.c
> index b026ddd..c32bc99 100644
> --- a/opensm/osm_subnet.c
> +++ b/opensm/osm_subnet.c
> @@ -784,6 +784,7 @@ static const opt_rec_t opt_tbl[] = {
>  	{ "event_db_dump_file", OPT_OFFSET(event_db_dump_file), opts_parse_charp, NULL, 0 },
>  	{ "perfmgr_rm_nodes", OPT_OFFSET(perfmgr_rm_nodes), opts_parse_boolean, NULL, 0 },
>  	{ "perfmgr_log_errors", OPT_OFFSET(perfmgr_log_errors), opts_parse_boolean, NULL, 0 },
> +	{ "perfmgr_query_cpi", OPT_OFFSET(perfmgr_query_cpi), opts_parse_boolean, NULL, 0 },
>  #endif				/* ENABLE_OSM_PERF_MGR */
>  	{ "event_plugin_name", OPT_OFFSET(event_plugin_name), opts_parse_charp, NULL, 0 },
>  	{ "event_plugin_options", OPT_OFFSET(event_plugin_options), opts_parse_charp, NULL, 0 },
> @@ -1487,6 +1488,7 @@ void osm_subn_set_default_opt(IN osm_subn_opt_t * p_opt)
>  	p_opt->event_db_dump_file = NULL; /* use default */
>  	p_opt->perfmgr_rm_nodes = TRUE;
>  	p_opt->perfmgr_log_errors = TRUE;
> +	p_opt->perfmgr_query_cpi = TRUE;
>  #endif				/* ENABLE_OSM_PERF_MGR */
>  
>  	p_opt->event_plugin_name = NULL;
> @@ -2555,14 +2557,17 @@ int osm_subn_output_conf(FILE *out, IN osm_subn_opt_t * p_opts)
>  		"# Remove missing nodes from DB\n"
>  		"perfmgr_rm_nodes %s\n\n"
>  		"# Log error counters to opensm.log\n"
> -		"perfmgr_log_errors %s\n\n",
> +		"perfmgr_log_errors %s\n\n"
> +		"# Query PerfMgrGet(ClassPortInfo) for extended capabilities\n"
> +		"perfmgr_query_cpi %s\n\n",
>  		p_opts->perfmgr ? "TRUE" : "FALSE",
>  		p_opts->perfmgr_redir ? "TRUE" : "FALSE",
>  		p_opts->perfmgr_sweep_time_s,
>  		p_opts->perfmgr_max_outstanding_queries,
>  		p_opts->perfmgr_ignore_cas ? "TRUE" : "FALSE",
>  		p_opts->perfmgr_rm_nodes ? "TRUE" : "FALSE",
> -		p_opts->perfmgr_log_errors ? "TRUE" : "FALSE");
> +		p_opts->perfmgr_log_errors ? "TRUE" : "FALSE",
> +		p_opts->perfmgr_query_cpi ? "TRUE" : "FALSE");
>  
>  	fprintf(out,
>  		"#\n# Event DB Options\n#\n"

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