| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright (C) 2003-2008 Takahiro Hirofuchi |
| */ |
| |
| #ifndef __USBIP_STUB_H |
| #define __USBIP_STUB_H |
| |
| #include <linux/list.h> |
| #include <linux/slab.h> |
| #include <linux/spinlock.h> |
| #include <linux/types.h> |
| #include <linux/usb.h> |
| #include <linux/wait.h> |
| |
| #define STUB_BUSID_OTHER 0 |
| #define STUB_BUSID_REMOV 1 |
| #define STUB_BUSID_ADDED 2 |
| #define STUB_BUSID_ALLOC 3 |
| |
| struct stub_device { |
| struct usb_device *udev; |
| |
| struct usbip_device ud; |
| __u32 devid; |
| |
| /* |
| * stub_priv preserves private data of each urb. |
| * It is allocated as stub_priv_cache and assigned to urb->context. |
| * |
| * stub_priv is always linked to any one of 3 lists; |
| * priv_init: linked to this until the comletion of a urb. |
| * priv_tx : linked to this after the completion of a urb. |
| * priv_free: linked to this after the sending of the result. |
| * |
| * Any of these list operations should be locked by priv_lock. |
| */ |
| spinlock_t priv_lock; |
| struct list_head priv_init; |
| struct list_head priv_tx; |
| struct list_head priv_free; |
| |
| /* see comments for unlinking in stub_rx.c */ |
| struct list_head unlink_tx; |
| struct list_head unlink_free; |
| |
| wait_queue_head_t tx_waitq; |
| }; |
| |
| /* private data into urb->priv */ |
| struct stub_priv { |
| unsigned long seqnum; |
| struct list_head list; |
| struct stub_device *sdev; |
| struct urb *urb; |
| |
| int unlinking; |
| }; |
| |
| struct stub_unlink { |
| unsigned long seqnum; |
| struct list_head list; |
| __u32 status; |
| }; |
| |
| /* same as SYSFS_BUS_ID_SIZE */ |
| #define BUSID_SIZE 32 |
| |
| struct bus_id_priv { |
| char name[BUSID_SIZE]; |
| char status; |
| int interf_count; |
| struct stub_device *sdev; |
| struct usb_device *udev; |
| char shutdown_busid; |
| }; |
| |
| /* stub_priv is allocated from stub_priv_cache */ |
| extern struct kmem_cache *stub_priv_cache; |
| |
| /* stub_dev.c */ |
| extern struct usb_device_driver stub_driver; |
| |
| /* stub_main.c */ |
| struct bus_id_priv *get_busid_priv(const char *busid); |
| int del_match_busid(char *busid); |
| void stub_device_cleanup_urbs(struct stub_device *sdev); |
| |
| /* stub_rx.c */ |
| int stub_rx_loop(void *data); |
| |
| /* stub_tx.c */ |
| void stub_enqueue_ret_unlink(struct stub_device *sdev, __u32 seqnum, |
| __u32 status); |
| void stub_complete(struct urb *urb); |
| int stub_tx_loop(void *data); |
| |
| #endif /* __USBIP_STUB_H */ |