^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2003-2008 Takahiro Hirofuchi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2015-2016 Samsung Electronics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Krzysztof Opasiak <k.opasiak@samsung.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #ifndef __USBIP_COMMON_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #define __USBIP_COMMON_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/compiler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/net.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/printk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/sched/task.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <uapi/linux/usbip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #undef pr_fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define pr_fmt(fmt) KBUILD_MODNAME ": %s:%d: " fmt, __func__, __LINE__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) usbip_debug_xmit = (1 << 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) usbip_debug_sysfs = (1 << 1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) usbip_debug_urb = (1 << 2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) usbip_debug_eh = (1 << 3),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) usbip_debug_stub_cmp = (1 << 8),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) usbip_debug_stub_dev = (1 << 9),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) usbip_debug_stub_rx = (1 << 10),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) usbip_debug_stub_tx = (1 << 11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) usbip_debug_vhci_rh = (1 << 8),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) usbip_debug_vhci_hc = (1 << 9),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) usbip_debug_vhci_rx = (1 << 10),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) usbip_debug_vhci_tx = (1 << 11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) usbip_debug_vhci_sysfs = (1 << 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define usbip_dbg_flag_xmit (usbip_debug_flag & usbip_debug_xmit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define usbip_dbg_flag_vhci_rh (usbip_debug_flag & usbip_debug_vhci_rh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define usbip_dbg_flag_vhci_hc (usbip_debug_flag & usbip_debug_vhci_hc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define usbip_dbg_flag_vhci_rx (usbip_debug_flag & usbip_debug_vhci_rx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define usbip_dbg_flag_vhci_tx (usbip_debug_flag & usbip_debug_vhci_tx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define usbip_dbg_flag_stub_rx (usbip_debug_flag & usbip_debug_stub_rx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define usbip_dbg_flag_stub_tx (usbip_debug_flag & usbip_debug_stub_tx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define usbip_dbg_flag_vhci_sysfs (usbip_debug_flag & usbip_debug_vhci_sysfs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) extern unsigned long usbip_debug_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) extern struct device_attribute dev_attr_usbip_debug;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define usbip_dbg_with_flag(flag, fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (flag & usbip_debug_flag) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) pr_debug(fmt, ##args); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define usbip_dbg_sysfs(fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) usbip_dbg_with_flag(usbip_debug_sysfs, fmt , ##args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #define usbip_dbg_xmit(fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) usbip_dbg_with_flag(usbip_debug_xmit, fmt , ##args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define usbip_dbg_urb(fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) usbip_dbg_with_flag(usbip_debug_urb, fmt , ##args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define usbip_dbg_eh(fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) usbip_dbg_with_flag(usbip_debug_eh, fmt , ##args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define usbip_dbg_vhci_rh(fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) usbip_dbg_with_flag(usbip_debug_vhci_rh, fmt , ##args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define usbip_dbg_vhci_hc(fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) usbip_dbg_with_flag(usbip_debug_vhci_hc, fmt , ##args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define usbip_dbg_vhci_rx(fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) usbip_dbg_with_flag(usbip_debug_vhci_rx, fmt , ##args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define usbip_dbg_vhci_tx(fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) usbip_dbg_with_flag(usbip_debug_vhci_tx, fmt , ##args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define usbip_dbg_vhci_sysfs(fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) usbip_dbg_with_flag(usbip_debug_vhci_sysfs, fmt , ##args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define usbip_dbg_stub_cmp(fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) usbip_dbg_with_flag(usbip_debug_stub_cmp, fmt , ##args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #define usbip_dbg_stub_rx(fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) usbip_dbg_with_flag(usbip_debug_stub_rx, fmt , ##args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define usbip_dbg_stub_tx(fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) usbip_dbg_with_flag(usbip_debug_stub_tx, fmt , ##args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * USB/IP request headers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * Each request is transferred across the network to its counterpart, which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * facilitates the normal USB communication. The values contained in the headers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * are basically the same as in a URB. Currently, four request types are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * defined:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * - USBIP_CMD_SUBMIT: a USB request block, corresponds to usb_submit_urb()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * (client to server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * - USBIP_RET_SUBMIT: the result of USBIP_CMD_SUBMIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * (server to client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * - USBIP_CMD_UNLINK: an unlink request of a pending USBIP_CMD_SUBMIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * corresponds to usb_unlink_urb()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * (client to server)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * - USBIP_RET_UNLINK: the result of USBIP_CMD_UNLINK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * (server to client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #define USBIP_CMD_SUBMIT 0x0001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) #define USBIP_CMD_UNLINK 0x0002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #define USBIP_RET_SUBMIT 0x0003
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) #define USBIP_RET_UNLINK 0x0004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) #define USBIP_DIR_OUT 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #define USBIP_DIR_IN 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * Arbitrary limit for the maximum number of isochronous packets in an URB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * compare for example the uhci_submit_isochronous function in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * drivers/usb/host/uhci-q.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #define USBIP_MAX_ISO_PACKETS 1024
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * struct usbip_header_basic - data pertinent to every request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * @command: the usbip request type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * @seqnum: sequential number that identifies requests; incremented per
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * connection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * @devid: specifies a remote USB device uniquely instead of busnum and devnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * in the stub driver, this value is ((busnum << 16) | devnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * @direction: direction of the transfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * @ep: endpoint number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) struct usbip_header_basic {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) __u32 command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) __u32 seqnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) __u32 devid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) __u32 direction;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) __u32 ep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * struct usbip_header_cmd_submit - USBIP_CMD_SUBMIT packet header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * @transfer_flags: URB flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * @transfer_buffer_length: the data size for (in) or (out) transfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * @start_frame: initial frame for isochronous or interrupt transfers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * @number_of_packets: number of isochronous packets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * @interval: maximum time for the request on the server-side host controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * @setup: setup data for a control request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct usbip_header_cmd_submit {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) __u32 transfer_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) __s32 transfer_buffer_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) /* it is difficult for usbip to sync frames (reserved only?) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) __s32 start_frame;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) __s32 number_of_packets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) __s32 interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) unsigned char setup[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * struct usbip_header_ret_submit - USBIP_RET_SUBMIT packet header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * @status: return status of a non-iso request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * @actual_length: number of bytes transferred
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * @start_frame: initial frame for isochronous or interrupt transfers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * @number_of_packets: number of isochronous packets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * @error_count: number of errors for isochronous transfers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) struct usbip_header_ret_submit {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) __s32 status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) __s32 actual_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) __s32 start_frame;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) __s32 number_of_packets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) __s32 error_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * struct usbip_header_cmd_unlink - USBIP_CMD_UNLINK packet header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * @seqnum: the URB seqnum to unlink
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) struct usbip_header_cmd_unlink {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) __u32 seqnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * struct usbip_header_ret_unlink - USBIP_RET_UNLINK packet header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * @status: return status of the request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) struct usbip_header_ret_unlink {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) __s32 status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * struct usbip_header - common header for all usbip packets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * @base: the basic header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * @u: packet type dependent header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct usbip_header {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct usbip_header_basic base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) struct usbip_header_cmd_submit cmd_submit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) struct usbip_header_ret_submit ret_submit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) struct usbip_header_cmd_unlink cmd_unlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) struct usbip_header_ret_unlink ret_unlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) } u;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * This is the same as usb_iso_packet_descriptor but packed for pdu.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) struct usbip_iso_packet_descriptor {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) __u32 offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) __u32 length; /* expected length */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) __u32 actual_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) __u32 status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) enum usbip_side {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) USBIP_VHCI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) USBIP_STUB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) USBIP_VUDC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) /* event handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) #define USBIP_EH_SHUTDOWN (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) #define USBIP_EH_BYE (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) #define USBIP_EH_RESET (1 << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) #define USBIP_EH_UNUSABLE (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) #define SDEV_EVENT_REMOVED (USBIP_EH_SHUTDOWN | USBIP_EH_BYE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) #define SDEV_EVENT_DOWN (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) #define SDEV_EVENT_ERROR_TCP (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) #define SDEV_EVENT_ERROR_SUBMIT (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) #define SDEV_EVENT_ERROR_MALLOC (USBIP_EH_SHUTDOWN | USBIP_EH_UNUSABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) #define VUDC_EVENT_REMOVED (USBIP_EH_SHUTDOWN | USBIP_EH_RESET | USBIP_EH_BYE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) #define VUDC_EVENT_DOWN (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) #define VUDC_EVENT_ERROR_TCP (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) /* catastrophic emulated usb error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) #define VUDC_EVENT_ERROR_USB (USBIP_EH_SHUTDOWN | USBIP_EH_UNUSABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) #define VUDC_EVENT_ERROR_MALLOC (USBIP_EH_SHUTDOWN | USBIP_EH_UNUSABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) #define VDEV_EVENT_REMOVED (USBIP_EH_SHUTDOWN | USBIP_EH_RESET | USBIP_EH_BYE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) #define VDEV_EVENT_DOWN (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) #define VDEV_EVENT_ERROR_TCP (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) #define VDEV_EVENT_ERROR_MALLOC (USBIP_EH_SHUTDOWN | USBIP_EH_UNUSABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) /* a common structure for stub_device and vhci_device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) struct usbip_device {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) enum usbip_side side;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) enum usbip_device_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) /* lock for status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) /* mutex for synchronizing sysfs store paths */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) struct mutex sysfs_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) int sockfd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) struct socket *tcp_socket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) struct task_struct *tcp_rx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) struct task_struct *tcp_tx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) unsigned long event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) wait_queue_head_t eh_waitq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) struct eh_ops {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) void (*shutdown)(struct usbip_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) void (*reset)(struct usbip_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) void (*unusable)(struct usbip_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) } eh_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) #define kthread_get_run(threadfn, data, namefmt, ...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) ({ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) struct task_struct *__k \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) = kthread_create(threadfn, data, namefmt, ## __VA_ARGS__); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) if (!IS_ERR(__k)) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) get_task_struct(__k); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) wake_up_process(__k); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) __k; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) #define kthread_stop_put(k) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) kthread_stop(k); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) put_task_struct(k); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) /* usbip_common.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) void usbip_dump_urb(struct urb *purb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) void usbip_dump_header(struct usbip_header *pdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) int usbip_recv(struct socket *sock, void *buf, int size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) void usbip_pack_pdu(struct usbip_header *pdu, struct urb *urb, int cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) int pack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) void usbip_header_correct_endian(struct usbip_header *pdu, int send);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) struct usbip_iso_packet_descriptor*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) usbip_alloc_iso_desc_pdu(struct urb *urb, ssize_t *bufflen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) /* some members of urb must be substituted before. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) int usbip_recv_iso(struct usbip_device *ud, struct urb *urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) void usbip_pad_iso(struct usbip_device *ud, struct urb *urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) /* usbip_event.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) int usbip_init_eh(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) void usbip_finish_eh(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) int usbip_start_eh(struct usbip_device *ud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) void usbip_stop_eh(struct usbip_device *ud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) void usbip_event_add(struct usbip_device *ud, unsigned long event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) int usbip_event_happened(struct usbip_device *ud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) int usbip_in_eh(struct task_struct *task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) static inline int interface_to_busnum(struct usb_interface *interface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) struct usb_device *udev = interface_to_usbdev(interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return udev->bus->busnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) static inline int interface_to_devnum(struct usb_interface *interface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) struct usb_device *udev = interface_to_usbdev(interface);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) return udev->devnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) #endif /* __USBIP_COMMON_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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