tests: INTERFACE_ADD/REMOVE with vif addition/removal

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

tests/hwsim/test_wpas_ctrl.py

@@ -10,6 +10,7 @@ import subprocess
 import time
 
 import hostapd
+import hwsim_utils
 from wpasupplicant import WpaSupplicant
 from utils import alloc_fail
 
@@ -1347,3 +1348,18 @@ def test_wpas_ctrl_dump(dev, apdev):
             raise Exception("Mismatch in config field " + field)
     if "beacon_int" not in vals:
         raise Exception("Missing config field")
+
+def test_wpas_ctrl_interface_add(dev, apdev):
+    """wpa_supplicant INTERFACE_ADD/REMOVE with vif creation/removal"""
+    hapd = hostapd.add_ap(apdev[0]['ifname'], { "ssid": "open" })
+    dev[0].connect("open", key_mgmt="NONE", scan_freq="2412")
+    hwsim_utils.test_connectivity(dev[0], hapd)
+
+    ifname = "test-" + dev[0].ifname
+    dev[0].interface_add(ifname, create=True)
+    wpas = WpaSupplicant(ifname=ifname)
+    wpas.connect("open", key_mgmt="NONE", scan_freq="2412")
+    hwsim_utils.test_connectivity(wpas, hapd)
+    hwsim_utils.test_connectivity(dev[0], hapd)
+    dev[0].global_request("INTERFACE_REMOVE " + ifname)
+    hwsim_utils.test_connectivity(dev[0], hapd)

tests/hwsim/wpasupplicant.py

@@ -54,7 +54,7 @@ class WpaSupplicant:
             self.ifname = None
 
     def interface_add(self, ifname, config="", driver="nl80211",
-                      drv_params=None, br_ifname=None):
+                      drv_params=None, br_ifname=None, create=False):
         try:
             groups = subprocess.check_output(["id"])
             group = "admin" if "(admin)" in groups else "adm"
@@ -67,9 +67,16 @@ class WpaSupplicant:
             if not drv_params:
                 cmd += '\t'
             cmd += '\t' + br_ifname
+        if create:
+            if not br_ifname:
+                cmd += '\t'
+                if not drv_params:
+                    cmd += '\t'
+            cmd += '\tcreate'
         if "FAIL" in self.global_request(cmd):
             raise Exception("Failed to add a dynamic wpa_supplicant interface")
-        self.set_ifname(ifname)
+        if not create:
+            self.set_ifname(ifname)
 
     def interface_remove(self, ifname):
         self.remove_ifname()