From e30c26d01c7493a7e02e77fc80c490fc85612d5a Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Mon, 12 Oct 2020 15:28:26 +0100 Subject: [usb] Allow endpoints to be refilled to a specified upper limit For USB mass storage devices, we do not want to submit more bulk IN packets than are required for the inbound data, since this will waste memory. Allow an upper limit to be specified on each refill attempt. The endpoint will be refilled to the lower of this limit or the limit specified by usb_refill_init(). Signed-off-by: Michael Brown --- src/include/ipxe/usb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'src/include/ipxe') diff --git a/src/include/ipxe/usb.h b/src/include/ipxe/usb.h index a05ac613c..70d6daf33 100644 --- a/src/include/ipxe/usb.h +++ b/src/include/ipxe/usb.h @@ -621,6 +621,7 @@ usb_recycle ( struct usb_endpoint *ep, struct io_buffer *iobuf ) { } extern int usb_prefill ( struct usb_endpoint *ep ); +extern int usb_refill_limit ( struct usb_endpoint *ep, unsigned int max ); extern int usb_refill ( struct usb_endpoint *ep ); extern void usb_flush ( struct usb_endpoint *ep ); -- cgit v1.2.3-55-g7522