Sony DualShock 4 is not respecting negotiated L2CAP IMTU. This might
results in SDP response being dropped by kernel. Workaround this by
forcing SDP code to use bigger IMTU while connecting.
---
src/device.c | 24 ++++++++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)
diff --git a/src/device.c b/src/device.c
index 1bd27a1..6ae14b2 100644
--- a/src/device.c
+++ b/src/device.c
@@ -118,6 +118,7 @@ struct browse_req {
int search_uuid;
int reconnect_attempt;
guint listener_id;
+ uint16_t sdp_flags;
};
struct included_search {
@@ -2971,7 +2972,8 @@ static void browse_cb(sdp_list_t *recs, int err, gpointer user_data)
sdp_uuid16_create(&uuid, uuid_list[req->search_uuid++]);
bt_search_service(btd_adapter_get_address(adapter),
&device->bdaddr, &uuid,
- browse_cb, user_data, NULL, 0);
+ browse_cb, user_data, NULL,
+ req->sdp_flags);
return;
}
@@ -3498,6 +3500,22 @@ done:
return 0;
}
+static uint16_t get_sdp_flags(struct btd_device *device)
+{
+ uint16_t vid, pid;
+
+ vid = btd_device_get_vendor(device);
+ pid = btd_device_get_product(device);
+
+ /* Sony DualShock 4 is not respecting negotiated L2CAP IMTU. This might
+ * results in SDP response being dropped by kernel. Workaround this by
+ * forcing SDP code to use bigger IMTU while connecting. */
+ if (vid == 0x054c && pid == 0x05c4)
+ return SDP_DOUBLE_IMTU;
+
+ return 0;
+}
+
static int device_browse_sdp(struct btd_device *device, DBusMessage *msg)
{
struct btd_adapter *adapter = device->adapter;
@@ -3512,9 +3530,11 @@ static int device_browse_sdp(struct btd_device *device, DBusMessage *msg)
req->device = device;
sdp_uuid16_create(&uuid, uuid_list[req->search_uuid++]);
+ req->sdp_flags = get_sdp_flags(device);
+
err = bt_search_service(btd_adapter_get_address(adapter),
&device->bdaddr, &uuid, browse_cb, req, NULL,
- 0);
+ req->sdp_flags);
if (err < 0) {
browse_request_free(req);
return err;
--
1.8.5.3
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