diff --git a/lib/libusb/libusb.h b/lib/libusb/libusb.h
--- a/lib/libusb/libusb.h
+++ b/lib/libusb/libusb.h
@@ -122,6 +122,7 @@
 	LIBUSB_TRANSFER_TYPE_ISOCHRONOUS = 1,
 	LIBUSB_TRANSFER_TYPE_BULK = 2,
 	LIBUSB_TRANSFER_TYPE_INTERRUPT = 3,
+	LIBUSB_TRANSFER_TYPE_BULK_STREAM = 4,
 };
 
 enum libusb_standard_request {
diff --git a/lib/libusb/libusb10.c b/lib/libusb/libusb10.c
--- a/lib/libusb/libusb10.c
+++ b/lib/libusb/libusb10.c
@@ -1530,6 +1530,7 @@
 		libusb20_tr_set_callback(pxfer0, libusb10_isoc_proxy);
 		break;
 	case LIBUSB_TRANSFER_TYPE_BULK:
+	case LIBUSB_TRANSFER_TYPE_BULK_STREAM:
 	case LIBUSB_TRANSFER_TYPE_INTERRUPT:
 		libusb20_tr_set_callback(pxfer0, libusb10_bulk_intr_proxy);
 		break;
diff --git a/lib/libusb/libusb10_io.c b/lib/libusb/libusb10_io.c
--- a/lib/libusb/libusb10_io.c
+++ b/lib/libusb/libusb10_io.c
@@ -780,6 +780,19 @@
 	transfer->callback = callback;
 }
 
+void
+libusb_fill_bulk_stream_transfer(struct libusb_transfer *transfer,
+    libusb_device_handle *dev_handle, unsigned char endpoint,
+    uint32_t stream_id, unsigned char *buffer, int length,
+    libusb_transfer_cb_fn callback, void *user_data, unsigned int timeout)
+{
+	libusb_fill_bulk_transfer(transfer, dev_handle, endpoint, buffer,
+	    length, callback, user_data, timeout);
+	transfer->type = LIBUSB_TRANSFER_TYPE_BULK_STREAM;
+
+	libusb_transfer_set_stream_id(transfer, stream_id);
+}
+
 void
 libusb_fill_iso_transfer(struct libusb_transfer *transfer, 
     libusb_device_handle *devh, uint8_t endpoint, uint8_t *buf,