iproute2: use named constants instead of number literals to fill rtnl_rttable_hash

Signed-off-by: Masatake YAMATO <yamato@redhat.com>

lib/rt_names.c

@@ -314,21 +314,27 @@ int rtnl_rtrealm_a2n(__u32 *id, const char *arg)
 }
 
 
-static struct rtnl_hash_entry dflt_table_entry  = { .id = 253, .name = "default" };
-static struct rtnl_hash_entry main_table_entry  = { .id = 254, .name = "main" };
-static struct rtnl_hash_entry local_table_entry = { .id = 255, .name = "local" };
+static struct rtnl_hash_entry dflt_table_entry  = { .name = "default" };
+static struct rtnl_hash_entry main_table_entry  = { .name = "main" };
+static struct rtnl_hash_entry local_table_entry = { .name = "local" };
 
 static struct rtnl_hash_entry * rtnl_rttable_hash[256] = {
-	[253] = &dflt_table_entry,
-	[254] = &main_table_entry,
-	[255] = &local_table_entry,
+	[RT_TABLE_DEFAULT] = &dflt_table_entry,
+	[RT_TABLE_MAIN]    = &main_table_entry,
+	[RT_TABLE_LOCAL]   = &local_table_entry,
 };
 
 static int rtnl_rttable_init;
 
 static void rtnl_rttable_initialize(void)
 {
+	int i;
+
 	rtnl_rttable_init = 1;
+	for (i = 0; i < 256; i++) {
+		if (rtnl_rttable_hash[i])
+			rtnl_rttable_hash[i]->id = i;
+	}
 	rtnl_hash_initialize(CONFDIR "/rt_tables",
 			     rtnl_rttable_hash, 256);
 }