File opensm-osm_port_info_rcv.c-Re-query-PortInfo-with-extended-speeds-enabled.patch of Package opensm

commit a58c675e4e6cd47d4c29a9a8ddcd5793e0e7b3de
Author: Nicolas Morey <nmorey@suse.com>
Date:   Wed Mar 4 14:10:55 2026 +0100

    opensm/osm_port_info_rcv.c: Re-query PortInfo with extended speeds enabled
    
    Currently, OpenSM's initial SubnGet(PortInfo) request might not set
    Attribute Modifier bit 31 (SMSupportExtendedSpeeds). If the switch
    responds with extended speeds capability without the actual extended
    speeds data, subsequent operations that rely on the true hardware speeds
    might fail.
    
    This patch implements a "Two-Stage Get" in the PortInfo response handler.
    If the initial Get() omitted AM bit 31 but the port's capability mask
    advertises extended speed support, OpenSM now explicitly requeries
    the port with AM bit 31 ON to obtain the correct extended speeds data
    before proceeding with the async state machine.
    
    Signed-off-by: Nicolas Morey <nmorey@suse.com>

diff --git opensm/osm_port_info_rcv.c opensm/osm_port_info_rcv.c
index d3eca8c88381..32052a929f64 100644
--- opensm/osm_port_info_rcv.c
+++ opensm/osm_port_info_rcv.c
@@ -762,6 +762,24 @@ void osm_pi_rcv_process(IN void *context, IN void *data)
 
 		CL_ASSERT(p_physp);
 
+		if (!p_context->set_method &&
+			!(cl_ntoh32(p_smp->attr_mod) & (1 << 31)) &&
+			(p_pi->capability_mask & IB_PORT_CAP_HAS_EXT_SPEEDS)) {
+
+			OSM_LOG(sm->p_log, OSM_LOG_DEBUG,
+				"Re-querying PortInfo to unlock extended speeds\n");
+
+			p_smp->attr_mod |= cl_hton32(1 << 31);
+
+			osm_req_get(sm, osm_physp_get_dr_path_ptr(p_physp),
+				IB_MAD_ATTR_PORT_INFO, p_smp->attr_mod,
+				FALSE, p_smp->m_key, 0, CL_DISP_MSGID_NONE,
+				&p_madw->context);
+			CL_PLOCK_RELEASE(sm->p_lock);
+
+			goto Exit;
+		}
+
 		/* Update the directed route path to this port
 		   in case the old path is no longer usable. */
 		p_dr_path = osm_physp_get_dr_path_ptr(p_physp);