osm_trap_rcv.c: Log DR path to node when trap 128

index bc4bad3..f7b92f6 100644
@@ -622,6 +622,10 @@ void osm_dump_sa_mad(IN osm_log_t * p_log, IN const ib_sa_mad_t * p_smp,
 void osm_dump_sa_mad_v2(IN osm_log_t * p_log, IN const ib_sa_mad_t * p_smp,
 			IN const int file_id, IN osm_log_level_t level);
 
+void osm_dump_dr_path_as_buf(IN size_t max_len, IN const osm_dr_path_t * p_path,
+			     OUT char* buf);
+
+
 /****f* IBA Base: Types/osm_get_sm_signal_str
 * NAME
 *	osm_get_sm_signal_str

index aa40650..e3ea3a7 100644
@@ -2875,6 +2875,13 @@ void osm_dump_smp_dr_path_v2(IN osm_log_t * p_log, IN const ib_smp_t * p_smp,
 	}
 }
 
+void osm_dump_dr_path_as_buf(IN size_t max_len,
+			     IN const osm_dr_path_t * p_path,
+			     OUT char* buf)
+{
+	sprint_uint8_arr(buf, max_len, p_path->path, p_path->hop_count + 1);
+}
+
 static const char *sm_signal_str[] = {
 	"OSM_SIGNAL_NONE",	/* 0 */
 	"OSM_SIGNAL_SWEEP",	/* 1 */

index ae08012..9b1d271 100644
@@ -364,6 +364,9 @@ static void trap_rcv_process_request(IN osm_sm_t * sm,
 	boolean_t physp_change_trap = FALSE;
 	uint64_t event_wheel_timeout = OSM_DEFAULT_TRAP_SUPRESSION_TIMEOUT;
 	boolean_t run_heavy_sweep = FALSE;
+	char buf[1024];
+	osm_dr_path_t *p_path;
+	unsigned n;
 
 	OSM_LOG_ENTER(sm->p_log);
 

@@ -555,6 +558,26 @@ static void trap_rcv_process_request(IN osm_sm_t * sm,
 	}
 
 check_sweep:
+	if (osm_log_is_active_v2(sm->p_log, OSM_LOG_INFO, FILE_ID)) {
+		if (ib_notice_is_generic(p_ntci) &&
+		    cl_ntoh16(p_ntci->g_or_v.generic.trap_num) == SM_LINK_STATE_CHANGED_TRAP) {
+			p_path = osm_physp_get_dr_path_ptr(p_physp);
+			if (p_path) {
+				n = sprintf(buf, "SM class trap %u: ",
+					    cl_ntoh16(p_ntci->g_or_v.generic.trap_num));
+				n += snprintf(buf + n, sizeof(buf) - n,
+					      "Directed Path Dump of %u hop path: "
+					      "Path = ", p_path->hop_count);
+
+				osm_dump_dr_path_as_buf(sizeof(buf) - n, p_path,
+							buf + n);
+
+				osm_log_v2(sm->p_log, OSM_LOG_INFO, FILE_ID,
+					   "%s\n", buf);
+			}
+		}
+	}
+
 	/* do a sweep if we received a trap */
 	if (sm->p_subn->opt.sweep_on_trap) {
 		/* if this is trap number 128 or run_heavy_sweep is TRUE -