2024-02-06 11:23:52

by Jonas Dreßler

[permalink] [raw]
Subject: [PATCH BlueZ v2 3/4] emulator/btdev: Send page timeout after 5.12 secs delay

Real bluetooth adapters wouldn't send the page timeout immediately
when trying to page a device, instead it would take a few seconds.

Try to behave more realistically in the emulator and send the page
timeout after 5.12 seconds, which is the default page timeout.
---
emulator/btdev.c | 32 +++++++++++++++++++++++++++++++-
1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/emulator/btdev.c b/emulator/btdev.c
index 7b67e9430..6bf0f442b 100644
--- a/emulator/btdev.c
+++ b/emulator/btdev.c
@@ -1281,6 +1281,27 @@ static void conn_complete(struct btdev *btdev,
send_event(btdev, BT_HCI_EVT_CONN_COMPLETE, &cc, sizeof(cc));
}

+struct page_timeout_data {
+ struct btdev *btdev;
+ uint8_t bdaddr[6];
+ unsigned int timeout_id;
+};
+
+static bool page_timeout(void *user_data)
+{
+ struct page_timeout_data *pt_data = user_data;
+ struct btdev *btdev = pt_data->btdev;
+ const uint8_t *bdaddr = pt_data->bdaddr;
+
+ timeout_remove(pt_data->timeout_id);
+ pt_data->timeout_id = 0;
+
+ conn_complete(btdev, bdaddr, BT_HCI_ERR_PAGE_TIMEOUT);
+
+ free(pt_data);
+ return false;
+}
+
static int cmd_create_conn_complete(struct btdev *dev, const void *data,
uint8_t len)
{
@@ -1298,7 +1319,16 @@ static int cmd_create_conn_complete(struct btdev *dev, const void *data,

send_event(remote, BT_HCI_EVT_CONN_REQUEST, &cr, sizeof(cr));
} else {
- conn_complete(dev, cmd->bdaddr, BT_HCI_ERR_PAGE_TIMEOUT);
+ struct page_timeout_data *pt_data =
+ new0(struct page_timeout_data, 1);
+
+ pt_data->btdev = dev;
+ memcpy(pt_data->bdaddr, cmd->bdaddr, 6);
+
+ /* Send page timeout after 5.12 seconds to emulate real paging */
+ pt_data->timeout_id = timeout_add(5120,
+ page_timeout,
+ pt_data, NULL);
}

return 0;
--
2.43.0