mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 04:15:07 +07:00
96c2737716
At this point, USB/IP kernel code is fully functional and can be moved out of staging. Signed-off-by: Valentina Manea <valentina.manea.m@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
336 lines
10 KiB
C
336 lines
10 KiB
C
/*
|
|
* Copyright (C) 2003-2008 Takahiro Hirofuchi
|
|
*
|
|
* This is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
* USA.
|
|
*/
|
|
|
|
#ifndef __USBIP_COMMON_H
|
|
#define __USBIP_COMMON_H
|
|
|
|
#include <linux/compiler.h>
|
|
#include <linux/device.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/net.h>
|
|
#include <linux/printk.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/types.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/wait.h>
|
|
#include <uapi/linux/usbip.h>
|
|
|
|
#define USBIP_VERSION "1.0.0"
|
|
|
|
#undef pr_fmt
|
|
|
|
#ifdef DEBUG
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": %s:%d: " fmt, __func__, __LINE__
|
|
#else
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
#endif
|
|
|
|
enum {
|
|
usbip_debug_xmit = (1 << 0),
|
|
usbip_debug_sysfs = (1 << 1),
|
|
usbip_debug_urb = (1 << 2),
|
|
usbip_debug_eh = (1 << 3),
|
|
|
|
usbip_debug_stub_cmp = (1 << 8),
|
|
usbip_debug_stub_dev = (1 << 9),
|
|
usbip_debug_stub_rx = (1 << 10),
|
|
usbip_debug_stub_tx = (1 << 11),
|
|
|
|
usbip_debug_vhci_rh = (1 << 8),
|
|
usbip_debug_vhci_hc = (1 << 9),
|
|
usbip_debug_vhci_rx = (1 << 10),
|
|
usbip_debug_vhci_tx = (1 << 11),
|
|
usbip_debug_vhci_sysfs = (1 << 12)
|
|
};
|
|
|
|
#define usbip_dbg_flag_xmit (usbip_debug_flag & usbip_debug_xmit)
|
|
#define usbip_dbg_flag_vhci_rh (usbip_debug_flag & usbip_debug_vhci_rh)
|
|
#define usbip_dbg_flag_vhci_hc (usbip_debug_flag & usbip_debug_vhci_hc)
|
|
#define usbip_dbg_flag_vhci_rx (usbip_debug_flag & usbip_debug_vhci_rx)
|
|
#define usbip_dbg_flag_vhci_tx (usbip_debug_flag & usbip_debug_vhci_tx)
|
|
#define usbip_dbg_flag_stub_rx (usbip_debug_flag & usbip_debug_stub_rx)
|
|
#define usbip_dbg_flag_stub_tx (usbip_debug_flag & usbip_debug_stub_tx)
|
|
#define usbip_dbg_flag_vhci_sysfs (usbip_debug_flag & usbip_debug_vhci_sysfs)
|
|
|
|
extern unsigned long usbip_debug_flag;
|
|
extern struct device_attribute dev_attr_usbip_debug;
|
|
|
|
#define usbip_dbg_with_flag(flag, fmt, args...) \
|
|
do { \
|
|
if (flag & usbip_debug_flag) \
|
|
pr_debug(fmt, ##args); \
|
|
} while (0)
|
|
|
|
#define usbip_dbg_sysfs(fmt, args...) \
|
|
usbip_dbg_with_flag(usbip_debug_sysfs, fmt , ##args)
|
|
#define usbip_dbg_xmit(fmt, args...) \
|
|
usbip_dbg_with_flag(usbip_debug_xmit, fmt , ##args)
|
|
#define usbip_dbg_urb(fmt, args...) \
|
|
usbip_dbg_with_flag(usbip_debug_urb, fmt , ##args)
|
|
#define usbip_dbg_eh(fmt, args...) \
|
|
usbip_dbg_with_flag(usbip_debug_eh, fmt , ##args)
|
|
|
|
#define usbip_dbg_vhci_rh(fmt, args...) \
|
|
usbip_dbg_with_flag(usbip_debug_vhci_rh, fmt , ##args)
|
|
#define usbip_dbg_vhci_hc(fmt, args...) \
|
|
usbip_dbg_with_flag(usbip_debug_vhci_hc, fmt , ##args)
|
|
#define usbip_dbg_vhci_rx(fmt, args...) \
|
|
usbip_dbg_with_flag(usbip_debug_vhci_rx, fmt , ##args)
|
|
#define usbip_dbg_vhci_tx(fmt, args...) \
|
|
usbip_dbg_with_flag(usbip_debug_vhci_tx, fmt , ##args)
|
|
#define usbip_dbg_vhci_sysfs(fmt, args...) \
|
|
usbip_dbg_with_flag(usbip_debug_vhci_sysfs, fmt , ##args)
|
|
|
|
#define usbip_dbg_stub_cmp(fmt, args...) \
|
|
usbip_dbg_with_flag(usbip_debug_stub_cmp, fmt , ##args)
|
|
#define usbip_dbg_stub_rx(fmt, args...) \
|
|
usbip_dbg_with_flag(usbip_debug_stub_rx, fmt , ##args)
|
|
#define usbip_dbg_stub_tx(fmt, args...) \
|
|
usbip_dbg_with_flag(usbip_debug_stub_tx, fmt , ##args)
|
|
|
|
/*
|
|
* USB/IP request headers
|
|
*
|
|
* Each request is transferred across the network to its counterpart, which
|
|
* facilitates the normal USB communication. The values contained in the headers
|
|
* are basically the same as in a URB. Currently, four request types are
|
|
* defined:
|
|
*
|
|
* - USBIP_CMD_SUBMIT: a USB request block, corresponds to usb_submit_urb()
|
|
* (client to server)
|
|
*
|
|
* - USBIP_RET_SUBMIT: the result of USBIP_CMD_SUBMIT
|
|
* (server to client)
|
|
*
|
|
* - USBIP_CMD_UNLINK: an unlink request of a pending USBIP_CMD_SUBMIT,
|
|
* corresponds to usb_unlink_urb()
|
|
* (client to server)
|
|
*
|
|
* - USBIP_RET_UNLINK: the result of USBIP_CMD_UNLINK
|
|
* (server to client)
|
|
*
|
|
*/
|
|
#define USBIP_CMD_SUBMIT 0x0001
|
|
#define USBIP_CMD_UNLINK 0x0002
|
|
#define USBIP_RET_SUBMIT 0x0003
|
|
#define USBIP_RET_UNLINK 0x0004
|
|
|
|
#define USBIP_DIR_OUT 0x00
|
|
#define USBIP_DIR_IN 0x01
|
|
|
|
/**
|
|
* struct usbip_header_basic - data pertinent to every request
|
|
* @command: the usbip request type
|
|
* @seqnum: sequential number that identifies requests; incremented per
|
|
* connection
|
|
* @devid: specifies a remote USB device uniquely instead of busnum and devnum;
|
|
* in the stub driver, this value is ((busnum << 16) | devnum)
|
|
* @direction: direction of the transfer
|
|
* @ep: endpoint number
|
|
*/
|
|
struct usbip_header_basic {
|
|
__u32 command;
|
|
__u32 seqnum;
|
|
__u32 devid;
|
|
__u32 direction;
|
|
__u32 ep;
|
|
} __packed;
|
|
|
|
/**
|
|
* struct usbip_header_cmd_submit - USBIP_CMD_SUBMIT packet header
|
|
* @transfer_flags: URB flags
|
|
* @transfer_buffer_length: the data size for (in) or (out) transfer
|
|
* @start_frame: initial frame for isochronous or interrupt transfers
|
|
* @number_of_packets: number of isochronous packets
|
|
* @interval: maximum time for the request on the server-side host controller
|
|
* @setup: setup data for a control request
|
|
*/
|
|
struct usbip_header_cmd_submit {
|
|
__u32 transfer_flags;
|
|
__s32 transfer_buffer_length;
|
|
|
|
/* it is difficult for usbip to sync frames (reserved only?) */
|
|
__s32 start_frame;
|
|
__s32 number_of_packets;
|
|
__s32 interval;
|
|
|
|
unsigned char setup[8];
|
|
} __packed;
|
|
|
|
/**
|
|
* struct usbip_header_ret_submit - USBIP_RET_SUBMIT packet header
|
|
* @status: return status of a non-iso request
|
|
* @actual_length: number of bytes transferred
|
|
* @start_frame: initial frame for isochronous or interrupt transfers
|
|
* @number_of_packets: number of isochronous packets
|
|
* @error_count: number of errors for isochronous transfers
|
|
*/
|
|
struct usbip_header_ret_submit {
|
|
__s32 status;
|
|
__s32 actual_length;
|
|
__s32 start_frame;
|
|
__s32 number_of_packets;
|
|
__s32 error_count;
|
|
} __packed;
|
|
|
|
/**
|
|
* struct usbip_header_cmd_unlink - USBIP_CMD_UNLINK packet header
|
|
* @seqnum: the URB seqnum to unlink
|
|
*/
|
|
struct usbip_header_cmd_unlink {
|
|
__u32 seqnum;
|
|
} __packed;
|
|
|
|
/**
|
|
* struct usbip_header_ret_unlink - USBIP_RET_UNLINK packet header
|
|
* @status: return status of the request
|
|
*/
|
|
struct usbip_header_ret_unlink {
|
|
__s32 status;
|
|
} __packed;
|
|
|
|
/**
|
|
* struct usbip_header - common header for all usbip packets
|
|
* @base: the basic header
|
|
* @u: packet type dependent header
|
|
*/
|
|
struct usbip_header {
|
|
struct usbip_header_basic base;
|
|
|
|
union {
|
|
struct usbip_header_cmd_submit cmd_submit;
|
|
struct usbip_header_ret_submit ret_submit;
|
|
struct usbip_header_cmd_unlink cmd_unlink;
|
|
struct usbip_header_ret_unlink ret_unlink;
|
|
} u;
|
|
} __packed;
|
|
|
|
/*
|
|
* This is the same as usb_iso_packet_descriptor but packed for pdu.
|
|
*/
|
|
struct usbip_iso_packet_descriptor {
|
|
__u32 offset;
|
|
__u32 length; /* expected length */
|
|
__u32 actual_length;
|
|
__u32 status;
|
|
} __packed;
|
|
|
|
enum usbip_side {
|
|
USBIP_VHCI,
|
|
USBIP_STUB,
|
|
};
|
|
|
|
/* event handler */
|
|
#define USBIP_EH_SHUTDOWN (1 << 0)
|
|
#define USBIP_EH_BYE (1 << 1)
|
|
#define USBIP_EH_RESET (1 << 2)
|
|
#define USBIP_EH_UNUSABLE (1 << 3)
|
|
|
|
#define SDEV_EVENT_REMOVED (USBIP_EH_SHUTDOWN | USBIP_EH_RESET | USBIP_EH_BYE)
|
|
#define SDEV_EVENT_DOWN (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
|
|
#define SDEV_EVENT_ERROR_TCP (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
|
|
#define SDEV_EVENT_ERROR_SUBMIT (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
|
|
#define SDEV_EVENT_ERROR_MALLOC (USBIP_EH_SHUTDOWN | USBIP_EH_UNUSABLE)
|
|
|
|
#define VDEV_EVENT_REMOVED (USBIP_EH_SHUTDOWN | USBIP_EH_BYE)
|
|
#define VDEV_EVENT_DOWN (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
|
|
#define VDEV_EVENT_ERROR_TCP (USBIP_EH_SHUTDOWN | USBIP_EH_RESET)
|
|
#define VDEV_EVENT_ERROR_MALLOC (USBIP_EH_SHUTDOWN | USBIP_EH_UNUSABLE)
|
|
|
|
/* a common structure for stub_device and vhci_device */
|
|
struct usbip_device {
|
|
enum usbip_side side;
|
|
enum usbip_device_status status;
|
|
|
|
/* lock for status */
|
|
spinlock_t lock;
|
|
|
|
struct socket *tcp_socket;
|
|
|
|
struct task_struct *tcp_rx;
|
|
struct task_struct *tcp_tx;
|
|
|
|
unsigned long event;
|
|
struct task_struct *eh;
|
|
wait_queue_head_t eh_waitq;
|
|
|
|
struct eh_ops {
|
|
void (*shutdown)(struct usbip_device *);
|
|
void (*reset)(struct usbip_device *);
|
|
void (*unusable)(struct usbip_device *);
|
|
} eh_ops;
|
|
};
|
|
|
|
#define kthread_get_run(threadfn, data, namefmt, ...) \
|
|
({ \
|
|
struct task_struct *__k \
|
|
= kthread_create(threadfn, data, namefmt, ## __VA_ARGS__); \
|
|
if (!IS_ERR(__k)) { \
|
|
get_task_struct(__k); \
|
|
wake_up_process(__k); \
|
|
} \
|
|
__k; \
|
|
})
|
|
|
|
#define kthread_stop_put(k) \
|
|
do { \
|
|
kthread_stop(k); \
|
|
put_task_struct(k); \
|
|
} while (0)
|
|
|
|
/* usbip_common.c */
|
|
void usbip_dump_urb(struct urb *purb);
|
|
void usbip_dump_header(struct usbip_header *pdu);
|
|
|
|
int usbip_recv(struct socket *sock, void *buf, int size);
|
|
|
|
void usbip_pack_pdu(struct usbip_header *pdu, struct urb *urb, int cmd,
|
|
int pack);
|
|
void usbip_header_correct_endian(struct usbip_header *pdu, int send);
|
|
|
|
struct usbip_iso_packet_descriptor*
|
|
usbip_alloc_iso_desc_pdu(struct urb *urb, ssize_t *bufflen);
|
|
|
|
/* some members of urb must be substituted before. */
|
|
int usbip_recv_iso(struct usbip_device *ud, struct urb *urb);
|
|
void usbip_pad_iso(struct usbip_device *ud, struct urb *urb);
|
|
int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb);
|
|
|
|
/* usbip_event.c */
|
|
int usbip_start_eh(struct usbip_device *ud);
|
|
void usbip_stop_eh(struct usbip_device *ud);
|
|
void usbip_event_add(struct usbip_device *ud, unsigned long event);
|
|
int usbip_event_happened(struct usbip_device *ud);
|
|
|
|
static inline int interface_to_busnum(struct usb_interface *interface)
|
|
{
|
|
struct usb_device *udev = interface_to_usbdev(interface);
|
|
|
|
return udev->bus->busnum;
|
|
}
|
|
|
|
static inline int interface_to_devnum(struct usb_interface *interface)
|
|
{
|
|
struct usb_device *udev = interface_to_usbdev(interface);
|
|
|
|
return udev->devnum;
|
|
}
|
|
|
|
#endif /* __USBIP_COMMON_H */
|