cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

usbip_host_common.h (2681B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 * Copyright (C) 2015-2016 Samsung Electronics
      4 *               Igor Kotrasinski <i.kotrasinsk@samsung.com>
      5 *               Krzysztof Opasiak <k.opasiak@samsung.com>
      6 *
      7 * Refactored from usbip_host_driver.c, which is:
      8 * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
      9 *               2005-2007 Takahiro Hirofuchi
     10 */
     11
     12#ifndef __USBIP_HOST_COMMON_H
     13#define __USBIP_HOST_COMMON_H
     14
     15#include <stdint.h>
     16#include <libudev.h>
     17#include <errno.h>
     18#include "list.h"
     19#include "usbip_common.h"
     20#include "sysfs_utils.h"
     21
     22struct usbip_host_driver;
     23
     24struct usbip_host_driver_ops {
     25	int (*open)(struct usbip_host_driver *hdriver);
     26	void (*close)(struct usbip_host_driver *hdriver);
     27	int (*refresh_device_list)(struct usbip_host_driver *hdriver);
     28	struct usbip_exported_device * (*get_device)(
     29		struct usbip_host_driver *hdriver, int num);
     30
     31	int (*read_device)(struct udev_device *sdev,
     32			   struct usbip_usb_device *dev);
     33	int (*read_interface)(struct usbip_usb_device *udev, int i,
     34			      struct usbip_usb_interface *uinf);
     35	int (*is_my_device)(struct udev_device *udev);
     36};
     37
     38struct usbip_host_driver {
     39	int ndevs;
     40	/* list of exported device */
     41	struct list_head edev_list;
     42	const char *udev_subsystem;
     43	struct usbip_host_driver_ops ops;
     44};
     45
     46struct usbip_exported_device {
     47	struct udev_device *sudev;
     48	int32_t status;
     49	struct usbip_usb_device udev;
     50	struct list_head node;
     51	struct usbip_usb_interface uinf[];
     52};
     53
     54/* External API to access the driver */
     55static inline int usbip_driver_open(struct usbip_host_driver *hdriver)
     56{
     57	if (!hdriver->ops.open)
     58		return -EOPNOTSUPP;
     59	return hdriver->ops.open(hdriver);
     60}
     61
     62static inline void usbip_driver_close(struct usbip_host_driver *hdriver)
     63{
     64	if (!hdriver->ops.close)
     65		return;
     66	hdriver->ops.close(hdriver);
     67}
     68
     69static inline int usbip_refresh_device_list(struct usbip_host_driver *hdriver)
     70{
     71	if (!hdriver->ops.refresh_device_list)
     72		return -EOPNOTSUPP;
     73	return hdriver->ops.refresh_device_list(hdriver);
     74}
     75
     76static inline struct usbip_exported_device *
     77usbip_get_device(struct usbip_host_driver *hdriver, int num)
     78{
     79	if (!hdriver->ops.get_device)
     80		return NULL;
     81	return hdriver->ops.get_device(hdriver, num);
     82}
     83
     84/* Helper functions for implementing driver backend */
     85int usbip_generic_driver_open(struct usbip_host_driver *hdriver);
     86void usbip_generic_driver_close(struct usbip_host_driver *hdriver);
     87int usbip_generic_refresh_device_list(struct usbip_host_driver *hdriver);
     88int usbip_export_device(struct usbip_exported_device *edev, int sockfd);
     89struct usbip_exported_device *usbip_generic_get_device(
     90		struct usbip_host_driver *hdriver, int num);
     91
     92#endif /* __USBIP_HOST_COMMON_H */