stub.h revision 2d8f4595d1f275f424a8920bb2563fc547661213
1/* 2 * Copyright (C) 2003-2008 Takahiro Hirofuchi 3 * 4 * This is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 17 * USA. 18 */ 19 20#include <linux/kernel.h> 21#include <linux/list.h> 22#include <linux/spinlock.h> 23#include <linux/slab.h> 24#include <linux/string.h> 25#include <linux/module.h> 26#include <linux/net.h> 27 28#define STUB_BUSID_OTHER 0 29#define STUB_BUSID_REMOV 1 30#define STUB_BUSID_ADDED 2 31#define STUB_BUSID_ALLOC 3 32 33struct stub_device { 34 struct usb_interface *interface; 35 struct usb_device *udev; 36 struct list_head list; 37 38 struct usbip_device ud; 39 __u32 devid; 40 41 /* 42 * stub_priv preserves private data of each urb. 43 * It is allocated as stub_priv_cache and assigned to urb->context. 44 * 45 * stub_priv is always linked to any one of 3 lists; 46 * priv_init: linked to this until the comletion of a urb. 47 * priv_tx : linked to this after the completion of a urb. 48 * priv_free: linked to this after the sending of the result. 49 * 50 * Any of these list operations should be locked by priv_lock. 51 */ 52 spinlock_t priv_lock; 53 struct list_head priv_init; 54 struct list_head priv_tx; 55 struct list_head priv_free; 56 57 /* see comments for unlinking in stub_rx.c */ 58 struct list_head unlink_tx; 59 struct list_head unlink_free; 60 61 62 wait_queue_head_t tx_waitq; 63}; 64 65/* private data into urb->priv */ 66struct stub_priv { 67 unsigned long seqnum; 68 struct list_head list; 69 struct stub_device *sdev; 70 struct urb *urb; 71 72 int unlinking; 73}; 74 75struct stub_unlink { 76 unsigned long seqnum; 77 struct list_head list; 78 __u32 status; 79}; 80 81#define BUSID_SIZE 20 82struct bus_id_priv { 83 char name[BUSID_SIZE]; 84 char status; 85 int interf_count; 86 struct stub_device *sdev; 87 char shutdown_busid; 88}; 89 90extern struct kmem_cache *stub_priv_cache; 91 92 93/*-------------------------------------------------------------------------*/ 94/* prototype declarations */ 95 96/* stub_tx.c */ 97void stub_complete(struct urb *); 98void stub_tx_loop(struct usbip_task *); 99 100/* stub_dev.c */ 101extern struct usb_driver stub_driver; 102 103/* stub_rx.c */ 104void stub_rx_loop(struct usbip_task *); 105void stub_enqueue_ret_unlink(struct stub_device *, __u32, __u32); 106 107/* stub_main.c */ 108struct bus_id_priv *get_busid_priv(const char *busid); 109int del_match_busid(char *busid); 110 111void stub_device_cleanup_urbs(struct stub_device *sdev); 112