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 * $Id: stub.h 66 2008-04-20 13:19:42Z hirofuchi $
 * 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
 * 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.

#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/module.h>
#include <linux/net.h>

struct stub_device {
      struct usb_interface *interface;
      struct list_head list;

      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;

extern struct kmem_cache *stub_priv_cache;

/* prototype declarations */

/* stub_tx.c */
void stub_complete(struct urb *);
void stub_tx_loop(struct usbip_task *);

/* stub_dev.c */
extern struct usb_driver stub_driver;

/* stub_rx.c */
void stub_rx_loop(struct usbip_task *);
void stub_enqueue_ret_unlink(struct stub_device *, __u32, __u32);

/* stub_main.c */
int match_busid(char *busid);
void stub_device_cleanup_urbs(struct stub_device *sdev);

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