Set priority group implicitly for IEEE mode

In IEEE mode, priority group setting are ignored by the driver. Hence,
qosmap does not take PG mappings in IEEE mode. Before dumping the
configuration to the driver, qosmap displays the configuration. Since
PG values are not taken, they are dumped as zeroes.

Fix this behavior by setting priority groups implicitly.

Change-Id: I3276ddf5160253a76a9da70e099ade42ec67986c
Closes-Bug: #1629200

utils/qosmap.c

@@ -641,6 +641,8 @@ validate_options(void)
 static void
 parse_long_opts(int opt_index, char *opt_arg)
 {
+    unsigned int i;
+
     errno = 0;
 
     switch (opt_index) {
@@ -649,6 +651,13 @@ parse_long_opts(int opt_index, char *opt_arg)
         if (dcbx_mode < 0) {
             Usage();
         }
+
+        if (dcbx_mode == DCB_CAP_DCBX_VER_IEEE) {
+            for (i = 0; i < NUM_TC; i++) {
+                priority_map.tc_to_group[i] = i;
+            }
+        }
+
         break;
 
     case DOTONEP_OPT_INDEX: