iso-tester: add test for ACL disconnect before ISO created

Simulate ACL being disconnected when connecting ISO, before LE Create
CIS got sent.  The kernel shall indicate connection failure for the ISO
socket immediately when the ACL is gone, since connecting the ISO can no
longer proceed.

ISO Connect ACL Disconnect - Failure

1 files changed, 38 insertions, 0 deletions

diff --git a/tools/iso-tester.c b/tools/iso-tester.c
index 75edc4380b..410da2c930 100644
--- a/tools/iso-tester.c
+++ b/tools/iso-tester.c
@@ -2654,6 +2654,40 @@ static void test_connect_suspend(const void *test_data)
 	trigger_force_suspend((void *)test_data);
 }
 
+static bool hook_acl_disc(const void *msg, uint16_t len, void *user_data)
+{
+	const uint8_t *msg_data = msg;
+	const struct bt_hci_evt_le_enhanced_conn_complete *ev;
+	struct test_data *data = tester_get_data();
+	struct bthost *bthost;
+
+	if (msg_data[0] != BT_HCI_EVT_LE_ENHANCED_CONN_COMPLETE)
+		return true;
+
+	ev = (void *) &msg_data[1];
+
+	tester_print("Disconnect ACL");
+
+	bthost = hciemu_client_get_host(data->hciemu);
+	bthost_hci_disconnect(bthost, le16_to_cpu(ev->handle), 0x13);
+
+	hciemu_flush_client_events(data->hciemu);
+
+	return true;
+}
+
+static void test_connect_acl_disc(const void *test_data)
+{
+	struct test_data *data = tester_get_data();
+
+	/* ACL disconnected before ISO is created */
+	hciemu_add_hook(data->hciemu, HCIEMU_HOOK_POST_EVT,
+					BT_HCI_EVT_LE_META_EVENT,
+					hook_acl_disc, NULL);
+
+	test_connect(test_data);
+}
+
 static void test_bcast(const void *test_data)
 {
 	struct test_data *data = tester_get_data();
@@ -2876,6 +2910,10 @@ int main(int argc, char *argv[])
 							setup_powered,
 							test_connect2);
 
+	test_iso("ISO Connect ACL Disconnect - Failure", &connect_suspend,
+							setup_powered,
+							test_connect_acl_disc);
+
 	test_iso("ISO Defer Send - Success", &connect_16_2_1_defer_send,
 							setup_powered,
 							test_connect);