tools/usb/usbip/libsrc/usbip_common.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2005-2007 Takahiro Hirofuchi
   4  */
   5
   6 #ifndef __USBIP_COMMON_H
   7 #define __USBIP_COMMON_H
   8
   9 #include <libudev.h>
  10
  11 #include <stdint.h>
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <string.h>
  15
  16 #include <syslog.h>
  17 #include <unistd.h>
  18 #include <linux/usb/ch9.h>
  19 #include <linux/usbip.h>
  20
  21 #ifndef USBIDS_FILE
  22 #define USBIDS_FILE "/usr/share/hwdata/usb.ids"
  23 #endif
  24
  25 #ifndef VHCI_STATE_PATH
  26 #define VHCI_STATE_PATH "/var/run/vhci_hcd"
  27 #endif
  28
  29 #define VUDC_DEVICE_DESCR_FILE "dev_desc"
  30
  31 /* kernel module names */
  32 #define USBIP_CORE_MOD_NAME     "usbip-core"
  33 #define USBIP_HOST_DRV_NAME     "usbip-host"
  34 #define USBIP_DEVICE_DRV_NAME   "usbip-vudc"
  35 #define USBIP_VHCI_DRV_NAME     "vhci_hcd"
  36
  37 /* sysfs constants */
  38 #define SYSFS_MNT_PATH         "/sys"
  39 #define SYSFS_BUS_NAME         "bus"
  40 #define SYSFS_BUS_TYPE         "usb"
  41 #define SYSFS_DRIVERS_NAME     "drivers"
  42
  43 #define SYSFS_PATH_MAX          256
  44 #define SYSFS_BUS_ID_SIZE       32
  45
  46 extern int usbip_use_syslog;
  47 extern int usbip_use_stderr;
  48 extern int usbip_use_debug ;
  49
  50 #define PROGNAME "usbip"
  51
  52 #define pr_fmt(fmt)     "%s: %s: " fmt "\n", PROGNAME
  53 #define dbg_fmt(fmt)    pr_fmt("%s:%d:[%s] " fmt), "debug",     \
  54                         __FILE__, __LINE__, __func__
  55
  56 #define err(fmt, args...)                                               \
  57         do {                                                            \
  58                 if (usbip_use_syslog) {                                 \
  59                         syslog(LOG_ERR, pr_fmt(fmt), "error", ##args);  \
  60                 }                                                       \
  61                 if (usbip_use_stderr) {                                 \
  62                         fprintf(stderr, pr_fmt(fmt), "error", ##args);  \
  63                 }                                                       \
  64         } while (0)
  65
  66 #define info(fmt, args...)                                              \
  67         do {                                                            \
  68                 if (usbip_use_syslog) {                                 \
  69                         syslog(LOG_INFO, pr_fmt(fmt), "info", ##args);  \
  70                 }                                                       \
  71                 if (usbip_use_stderr) {                                 \
  72                         fprintf(stderr, pr_fmt(fmt), "info", ##args);   \
  73                 }                                                       \
  74         } while (0)
  75
  76 #define dbg(fmt, args...)                                               \
  77         do {                                                            \
  78         if (usbip_use_debug) {                                          \
  79                 if (usbip_use_syslog) {                                 \
  80                         syslog(LOG_DEBUG, dbg_fmt(fmt), ##args);        \
  81                 }                                                       \
  82                 if (usbip_use_stderr) {                                 \
  83                         fprintf(stderr, dbg_fmt(fmt), ##args);          \
  84                 }                                                       \
  85         }                                                               \
  86         } while (0)
  87
  88 #define BUG()                                           \
  89         do {                                            \
  90                 err("sorry, it's a bug!");              \
  91                 abort();                                \
  92         } while (0)
  93
  94 struct usbip_usb_interface {
  95         uint8_t bInterfaceClass;
  96         uint8_t bInterfaceSubClass;
  97         uint8_t bInterfaceProtocol;
  98         uint8_t padding;        /* alignment */
  99 } __attribute__((packed));
 100
 101 struct usbip_usb_device {
 102         char path[SYSFS_PATH_MAX];
 103         char busid[SYSFS_BUS_ID_SIZE];
 104
 105         uint32_t busnum;
 106         uint32_t devnum;
 107         uint32_t speed;
 108
 109         uint16_t idVendor;
 110         uint16_t idProduct;
 111         uint16_t bcdDevice;
 112
 113         uint8_t bDeviceClass;
 114         uint8_t bDeviceSubClass;
 115         uint8_t bDeviceProtocol;
 116         uint8_t bConfigurationValue;
 117         uint8_t bNumConfigurations;
 118         uint8_t bNumInterfaces;
 119 } __attribute__((packed));
 120
 121 #define to_string(s)    #s
 122
 123 void dump_usb_interface(struct usbip_usb_interface *);
 124 void dump_usb_device(struct usbip_usb_device *);
 125 int read_usb_device(struct udev_device *sdev, struct usbip_usb_device *udev);
 126 int read_attr_value(struct udev_device *dev, const char *name,
 127                     const char *format);
 128 int read_usb_interface(struct usbip_usb_device *udev, int i,
 129                        struct usbip_usb_interface *uinf);
 130
 131 const char *usbip_speed_string(int num);
 132 const char *usbip_status_string(int32_t status);
 133
 134 int usbip_names_init(char *);
 135 void usbip_names_free(void);
 136 void usbip_names_get_product(char *buff, size_t size, uint16_t vendor,
 137                              uint16_t product);
 138 void usbip_names_get_class(char *buff, size_t size, uint8_t class,
 139                            uint8_t subclass, uint8_t protocol);
 140
 141 #endif /* __USBIP_COMMON_H */