userspace/tools: clear VID=0 when set up VLANs from dot-config

By default, on the startup the VLAN with VID0 is created with the mask
0xffffffff. It is used to pass all the traffic between ports. However, when
VLANs configuration is read from the dot-config now it also remove this VLAN.
We cannot relay on how the system was configured before.
If such configuration is needed it can be configured in the
CONFIG_VLANS_VLAN0000 config option.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

userspace/tools/wrs_vlans.c

@@ -84,6 +84,7 @@ static int print_help(char *prgname);
 static void print_config_rtu(struct s_port_vlans *vlans);
 static void print_config_vlan(void);
 static int apply_settings(struct s_port_vlans *vlans);
+static void default_vlan_config(void);
 static int clear_all(void);
 static int set_rtu_vlan(int vid, int fid, int pmask, int drop, int prio,
 			int del, int flags);
@@ -327,6 +328,7 @@ int main(int argc, char *argv[])
 		case OPT_CLEAR:
 			if (clear_all())
 				exit(1); /* message already printed */
+			default_vlan_config();
 			break;
 		case 0:
 			break;
@@ -755,17 +757,21 @@ static void print_hp_mask(void)
 	printf("#-----------------------------------------------\n");
 }
 
+static void default_vlan_config(void)
+{
+	int val;
+	/* Create VLAN 0 reserved for untagged packets */
+	minipc_call(rtud_ch, MINIPC_TIMEOUT, &rtud_export_vlan_entry,
+		    &val, 0, 0, 0xffffffff, 0, 0, 0, 0);
+}
+
 static int clear_all(void)
 {
 	uint32_t r;
 	int val, i;
 	int ep;
 
-	/* cancel all rtu-administered vlans */
-	minipc_call(rtud_ch, MINIPC_TIMEOUT, &rtud_export_vlan_entry,
-		    &val, 0, 0, 0xffffffff, 0, 0, 0, 0);
-
-	for (i = 1; i < NUM_VLANS; i++) {
+	for (i = 0; i < NUM_VLANS; i++) {
 		if ((vlan_tab_shm[i].drop != 0)
 		    && (vlan_tab_shm[i].port_mask == 0x0))
 			continue;
@@ -937,6 +943,9 @@ static int read_dot_config(char *dot_config_file)
 	if (!ret || strcmp(ret, "y")) {
 		if (wrs_msg_level >= LOG_DEBUG)
 			printf("VLANS not enabled\n");
+		/* All VLANs were removed, since VLANs are disabled set the
+		 * default configuration */
+		default_vlan_config();
 		return -2;
 	}