[ofa-general] [PATCHv2] OpenSM/osm_trap_rcv.c: Better Trap 131 Handling

[Hal Rosenstock]

OpenSM/osm_trap_rcv.c: Better trap 131 handling

When trap 131 occurs, check operational VLs and set port state to DOWN
if needed.

I think this is what Amit was saying should be done in his emails
yesterday on the list (modified by Suri's comment).

Signed-off-by: Hal Rosenstock <halr at voltaire.com>

diff --git a/opensm/opensm/osm_trap_rcv.c b/opensm/opensm/osm_trap_rcv.c
index f912dcd..3f60f3d 100644
--- a/opensm/opensm/osm_trap_rcv.c
+++ b/opensm/opensm/osm_trap_rcv.c
@@ -550,16 +550,76 @@ __osm_trap_rcv_process_request(
         }
         else
         {
-          /* When babbling port policy option is enabled and
-             Threshold for disabling a "babbling" port is exceeded */
+          uint8_t               payload[IB_SMP_DATA_SIZE];
+          ib_port_info_t*       p_pi = (ib_port_info_t*)payload;
+          const ib_port_info_t* p_old_pi;
+          osm_madw_context_t    context;
+
+          p_old_pi = &p_physp->port_info;
+          memcpy( payload, p_old_pi, sizeof(ib_port_info_t) );
+
+          if (p_ntci->g_or_v.generic.trap_num == CL_HTON16(131))
+          {
+            uint8_t port_state, cur_opvls, opvls;
+
+            port_state = ib_port_info_get_port_state(p_old_pi);
+            if (port_state != IB_LINK_DOWN)
+            {
+              /* First, validate OperationalVLs */
+              cur_opvls = ib_port_info_get_op_vls(p_old_pi);
+              opvls = osm_physp_calc_link_op_vls(p_rcv->p_log, p_rcv->p_subn, p_physp);
+              if (opvls != cur_opvls)
+              {
+                osm_log(p_rcv->p_log, OSM_LOG_ERROR,
+                        "__osm_trap_rcv_process_request: ERR 3809: "
+                        "Current OP_VLs %d New OP_VLs %d\n",
+                        cur_opvls, opvls);
+                ib_port_info_set_op_vls(p_pi, opvls);
+              }
+
+              /* Now, set port to DOWN if not already in INIT */
+              if (port_state != IB_LINK_INIT)
+              {
+                ib_port_info_set_port_state( p_pi, IB_LINK_DOWN );
+                ib_port_info_set_port_phys_state( IB_PORT_PHYS_STATE_NO_CHANGE, p_pi );
+              }
+              else
+              {
+                ib_port_info_set_port_state( p_pi, IB_LINK_NO_CHANGE );
+                ib_port_info_set_port_phys_state( IB_PORT_PHYS_STATE_NO_CHANGE, p_pi );
+              }
+
+              /* Now, issue set of PortInfo */
+              context.pi_context.node_guid = osm_node_get_node_guid( osm_physp_get_node_ptr( p_physp ) );
+              context.pi_context.port_guid = osm_physp_get_port_guid( p_physp );
+              context.pi_context.set_method = TRUE;
+              context.pi_context.update_master_sm_base_lid = FALSE;
+              context.pi_context.light_sweep = FALSE;
+              context.pi_context.active_transition = FALSE;
+
+              status = osm_req_set( &p_rcv->p_subn->p_osm->sm.req,
+                                     osm_physp_get_dr_path_ptr( p_physp ),
+                                     payload,
+                                     sizeof(payload),
+                                     IB_MAD_ATTR_PORT_INFO,
+                                     cl_hton32(osm_physp_get_port_num( p_physp )),
+                                     CL_DISP_MSGID_NONE,
+                                    &context );
+
+              if( status != IB_SUCCESS )
+              {
+                 osm_log( p_rcv->p_log, OSM_LOG_ERROR,
+                          "__osm_trap_rcv_process_request: ERR 3812: "
+                          "Request to set PortInfo failed\n" );
+              }
+            }
+         }
+ 
+         /* When babbling port policy option is enabled and
+            Threshold for disabling a "babbling" port is exceeded */
           if ( p_rcv->p_subn->opt.babbling_port_policy &&
                num_received >= 250 )
           {
-            uint8_t               payload[IB_SMP_DATA_SIZE];
-            ib_port_info_t*       p_pi = (ib_port_info_t*)payload;
-            const ib_port_info_t* p_old_pi;
-            osm_madw_context_t    context;
-
             /* If trap 131, might want to disable peer port if available */
             /* but peer port has been observed not to respond to SM requests */
 
@@ -570,9 +630,6 @@ __osm_trap_rcv_process_request(
                      p_ntci->data_details.ntc_129_131.port_num
                      );
 
-            p_old_pi = &p_physp->port_info;
-            memcpy( payload, p_old_pi, sizeof(ib_port_info_t) );
-
             /* Set port to disabled/down */
             ib_port_info_set_port_state( p_pi, IB_LINK_DOWN );
             ib_port_info_set_port_phys_state( IB_PORT_PHYS_STATE_DISABLED, p_pi );