linux/drivers/usb/usbip/vudc_transfer.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2015 Karol Kosik <[email protected]>
 * Copyright (C) 2015-2016 Samsung Electronics
 *               Igor Kotrasinski <[email protected]>
 *
 * Based on dummy_hcd.c, which is:
 * Copyright (C) 2003 David Brownell
 * Copyright (C) 2003-2005 Alan Stern
 */

#include <linux/usb.h>
#include <linux/timer.h>
#include <linux/usb/ch9.h>

#include "vudc.h"

#define DEV_REQUEST …
#define DEV_INREQUEST …
#define INTF_REQUEST …
#define INTF_INREQUEST …
#define EP_REQUEST …
#define EP_INREQUEST …

static int get_frame_limit(enum usb_device_speed speed)
{ … }

/*
 * handle_control_request() - handles all control transfers
 * @udc: pointer to vudc
 * @urb: the urb request to handle
 * @setup: pointer to the setup data for a USB device control
 *	 request
 * @status: pointer to request handling status
 *
 * Return 0 - if the request was handled
 *	  1 - if the request wasn't handles
 *	  error code on error
 *
 * Adapted from drivers/usb/gadget/udc/dummy_hcd.c
 */
static int handle_control_request(struct vudc *udc, struct urb *urb,
				  struct usb_ctrlrequest *setup,
				  int *status)
{ … }

/* Adapted from dummy_hcd.c ; caller must hold lock */
static int transfer(struct vudc *udc,
		struct urb *urb, struct vep *ep, int limit)
{ … }

static void v_timer(struct timer_list *t)
{ … }

/* All timer functions are run with udc->lock held */

void v_init_timer(struct vudc *udc)
{ … }

void v_start_timer(struct vudc *udc)
{ … }

void v_kick_timer(struct vudc *udc, unsigned long time)
{ … }

void v_stop_timer(struct vudc *udc)
{ … }