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From:   Luiz Augusto von Dentz <luiz.dentz@gmail.com>
To:     linux-bluetooth@vger.kernel.org
Subject: [PATCH BlueZ] iso-tester: Introduce tests for Disconnect/Reconnect
Date:   Mon, 15 Aug 2022 12:04:01 -0700
Message-Id: <20220815190401.1176081-1-luiz.dentz@gmail.com>
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From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

This introduces a test that do use shutdown to disconnect an ISO socket
and then another one that attempts to reconnect it again to emulate
upper profile transitions.
---
 tools/iso-tester.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)

diff --git a/tools/iso-tester.c b/tools/iso-tester.c
index df46bc953f37..e4950ead7c69 100644
--- a/tools/iso-tester.c
+++ b/tools/iso-tester.c
@@ -136,6 +136,7 @@ struct test_data {
 	unsigned int io_id[2];
 	uint8_t client_num;
 	int step;
+	bool reconnect;
 };
 
 struct iso_client_data {
@@ -146,6 +147,7 @@ struct iso_client_data {
 	bool server;
 	bool bcast;
 	bool defer;
+	bool disconnect;
 };
 
 static void mgmt_debug(const char *str, void *user_data)
@@ -611,6 +613,18 @@ static const struct iso_client_data connect_16_2_1_send_recv = {
 	.recv = &send_16_2_1,
 };
 
+static const struct iso_client_data disconnect_16_2_1 = {
+	.qos = QOS_16_2_1,
+	.expect_err = 0,
+	.disconnect = true,
+};
+
+static const struct iso_client_data reconnect_16_2_1 = {
+	.qos = QOS_16_2_1,
+	.expect_err = 0,
+	.disconnect = true,
+};
+
 static const struct iso_client_data bcast_16_2_1_send = {
 	.qos = QOS_OUT_16_2_1,
 	.expect_err = 0,
@@ -1142,6 +1156,49 @@ static void iso_send(struct test_data *data, GIOChannel *io)
 		iso_recv(data, io);
 }
 
+static void setup_connect(struct test_data *data, uint8_t num, GIOFunc func);
+static gboolean iso_connect_cb(GIOChannel *io, GIOCondition cond,
+							gpointer user_data);
+
+static gboolean iso_disconnected(GIOChannel *io, GIOCondition cond,
+							gpointer user_data)
+{
+	struct test_data *data = user_data;
+
+	data->io_id[0] = 0;
+
+	if (cond & G_IO_HUP) {
+		tester_print("Successfully disconnected");
+
+		if (data->reconnect) {
+			data->reconnect = false;
+			setup_connect(data, 0, iso_connect_cb);
+			return FALSE;
+		}
+
+		tester_test_passed();
+	} else
+		tester_test_failed();
+
+	return FALSE;
+}
+
+static void iso_shutdown(struct test_data *data, GIOChannel *io)
+{
+	int sk, cl;
+
+	sk = g_io_channel_unix_get_fd(io);
+	cl = dup(sk);
+
+	data->io_id[0] = g_io_add_watch(io, G_IO_HUP, iso_disconnected, data);
+
+	/* Shutdown clone fd so the original fd don't HUP immediately and
+	 * properly wait for socket to be closed.
+	 */
+	shutdown(cl, SHUT_RDWR);
+	close(cl);
+}
+
 static gboolean iso_connect(GIOChannel *io, GIOCondition cond,
 							gpointer user_data)
 {
@@ -1195,6 +1252,8 @@ static gboolean iso_connect(GIOChannel *io, GIOCondition cond,
 			iso_send(data, io);
 		else if (isodata->recv)
 			iso_recv(data, io);
+		else if (isodata->disconnect)
+			iso_shutdown(data, io);
 		else
 			tester_test_passed();
 	}
@@ -1306,6 +1365,19 @@ static void test_connect(const void *test_data)
 	setup_connect(data, 0, iso_connect_cb);
 }
 
+static void setup_reconnect(struct test_data *data, uint8_t num, GIOFunc func)
+{
+	data->reconnect = true;
+	setup_connect(data, num, func);
+}
+
+static void test_reconnect(const void *test_data)
+{
+	struct test_data *data = tester_get_data();
+
+	setup_reconnect(data, 0, iso_connect_cb);
+}
+
 static void test_defer(const void *test_data)
 {
 	struct test_data *data = tester_get_data();
@@ -1726,6 +1798,14 @@ int main(int argc, char *argv[])
 							setup_powered,
 							test_connect);
 
+	test_iso("ISO Disconnect - Success", &disconnect_16_2_1,
+							setup_powered,
+							test_connect);
+
+	test_iso("ISO Reconnect - Success", &reconnect_16_2_1,
+							setup_powered,
+							test_reconnect);
+
 	test_iso("ISO Broadcaster - Success", &bcast_16_2_1_send, setup_powered,
 							test_bcast);
 	test_iso("ISO Broadcaster BIG 0x01 - Success", &bcast_1_16_2_1_send,
-- 
2.37.2