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 list_head list; 36 37 struct usbip_device ud; 38 __u32 devid; 39 40 /* 41 * stub_priv preserves private data of each urb. 42 * It is allocated as stub_priv_cache and assigned to urb->context. 43 * 44 * stub_priv is always linked to any one of 3 lists; 45 * priv_init: linked to this until the comletion of a urb. 46 * priv_tx : linked to this after the completion of a urb. 47 * priv_free: linked to this after the sending of the result. 48 * 49 * Any of these list operations should be locked by priv_lock. 50 */ 51 spinlock_t priv_lock; 52 struct list_head priv_init; 53 struct list_head priv_tx; 54 struct list_head priv_free; 55 56 /* see comments for unlinking in stub_rx.c */ 57 struct list_head unlink_tx; 58 struct list_head unlink_free; 59 60 61 wait_queue_head_t tx_waitq; 62}; 63 64/* private data into urb->priv */ 65struct stub_priv { 66 unsigned long seqnum; 67 struct list_head list; 68 struct stub_device *sdev; 69 struct urb *urb; 70 71 int unlinking; 72}; 73 74struct stub_unlink { 75 unsigned long seqnum; 76 struct list_head list; 77 __u32 status; 78}; 79 80#define BUSID_SIZE 20 81struct bus_id_priv { 82 char name[BUSID_SIZE]; 83 char status; 84 int interf_count; 85 struct stub_device *sdev; 86 char shutdown_busid; 87}; 88 89extern struct kmem_cache *stub_priv_cache; 90 91 92/*-------------------------------------------------------------------------*/ 93/* prototype declarations */ 94 95/* stub_tx.c */ 96void stub_complete(struct urb *); 97void stub_tx_loop(struct usbip_task *); 98 99/* stub_dev.c */ 100extern struct usb_driver stub_driver; 101 102/* stub_rx.c */ 103void stub_rx_loop(struct usbip_task *); 104void stub_enqueue_ret_unlink(struct stub_device *, __u32, __u32); 105 106/* stub_main.c */ 107struct bus_id_priv *get_busid_priv(const char *busid); 108int del_match_busid(char *busid); 109 110void stub_device_cleanup_urbs(struct stub_device *sdev); 111