Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * The USB Monitor, inspired by Dave Harding's USBMon. | |
3 | */ | |
4 | ||
5 | #ifndef __USB_MON_H | |
6 | #define __USB_MON_H | |
7 | ||
8 | #include <linux/list.h> | |
9 | #include <linux/slab.h> | |
10 | #include <linux/kref.h> | |
11 | /* #include <linux/usb.h> */ /* We use struct pointers only in this header */ | |
12 | ||
13 | #define TAG "usbmon" | |
14 | ||
15 | struct mon_bus { | |
16 | struct list_head bus_link; | |
17 | spinlock_t lock; | |
18 | struct dentry *dent_s; /* Debugging file */ | |
19 | struct dentry *dent_t; /* Text interface file */ | |
20 | struct usb_bus *u_bus; | |
21 | ||
22 | /* Ref */ | |
23 | int nreaders; /* Under mon_lock AND mbus->lock */ | |
24 | struct list_head r_list; /* Chain of readers (usually one) */ | |
25 | struct kref ref; /* Under mon_lock */ | |
26 | ||
27 | /* Stats */ | |
28 | unsigned int cnt_text_lost; | |
29 | }; | |
30 | ||
31 | /* | |
32 | * An instance of a process which opened a file (but can fork later) | |
33 | */ | |
34 | struct mon_reader { | |
35 | struct list_head r_link; | |
36 | struct mon_bus *m_bus; | |
37 | void *r_data; /* Use container_of instead? */ | |
38 | ||
39 | void (*rnf_submit)(void *data, struct urb *urb); | |
40 | void (*rnf_complete)(void *data, struct urb *urb); | |
41 | }; | |
42 | ||
43 | void mon_reader_add(struct mon_bus *mbus, struct mon_reader *r); | |
44 | void mon_reader_del(struct mon_bus *mbus, struct mon_reader *r); | |
45 | ||
46 | extern struct semaphore mon_lock; | |
47 | ||
48 | extern struct file_operations mon_fops_text; | |
49 | extern struct file_operations mon_fops_stat; | |
50 | ||
51 | #endif /* __USB_MON_H */ |