P2P: p2p_group_remove should fail on non-P2P interface

p2p_group_remove should only attempt to remove P2P group
interfaces and fail on non-P2P group interfaces.

Signed-hostap: Michael Naumov <michael.naumov@intel.com>
Signed-hostap: Nirav Shah <nirav.j2.shah@intel.com>

wpa_supplicant/p2p_supplicant.c

@@ -214,7 +214,7 @@ static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 }
 
 
-static void wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, int silent)
+static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, int silent)
 {
 	struct wpa_ssid *ssid;
 	char *gtype;
@@ -234,6 +234,16 @@ static void wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, int silent)
 				break;
 			ssid = ssid->next;
 		}
+		if (ssid == NULL) {
+			/*
+			 * Reset wpa_s->removal_reason to the default unknown
+			 * state.
+			 */
+			wpa_s->removal_reason = P2P_GROUP_REMOVAL_UNKNOWN;
+			wpa_printf(MSG_ERROR, "P2P: P2P group interface "
+				   "not found");
+			return -1;
+		}
 	}
 	if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 		gtype = "GO";
@@ -295,7 +305,7 @@ static void wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, int silent)
 		if (wpa_s && ifname)
 			wpa_drv_if_remove(wpa_s, type, ifname);
 		os_free(ifname);
-		return;
+		return 0;
 	}
 
 	wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
@@ -328,6 +338,8 @@ static void wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, int silent)
 		wpa_supplicant_ap_deinit(wpa_s);
 	else
 		wpa_drv_deinit_p2p_cli(wpa_s);
+
+	return 0;
 }
 
 
@@ -4796,9 +4808,7 @@ int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
 		return -1;
 
 	wpa_s->removal_reason = P2P_GROUP_REMOVAL_REQUESTED;
-	wpas_p2p_group_delete(wpa_s, 0);
-
-	return 0;
+	return wpas_p2p_group_delete(wpa_s, 0);
 }