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76 lines
2.0 KiB
76 lines
2.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* The USB Monitor, inspired by Dave Harding's USBMon. |
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* |
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* Copyright (C) 2005 Pete Zaitcev ([email protected]) |
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*/ |
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#ifndef __USB_MON_H |
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#define __USB_MON_H |
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#include <linux/list.h> |
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#include <linux/slab.h> |
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#include <linux/kref.h> |
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/* #include <linux/usb.h> */ /* We use struct pointers only in this header */ |
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#define TAG "usbmon" |
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struct mon_bus { |
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struct list_head bus_link; |
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spinlock_t lock; |
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struct usb_bus *u_bus; |
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int text_inited; |
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int bin_inited; |
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struct dentry *dent_s; /* Debugging file */ |
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struct dentry *dent_t; /* Text interface file */ |
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struct dentry *dent_u; /* Second text interface file */ |
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struct device *classdev; /* Device in usbmon class */ |
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/* Ref */ |
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int nreaders; /* Under mon_lock AND mbus->lock */ |
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struct list_head r_list; /* Chain of readers (usually one) */ |
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struct kref ref; /* Under mon_lock */ |
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/* Stats */ |
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unsigned int cnt_events; |
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unsigned int cnt_text_lost; |
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}; |
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/* |
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* An instance of a process which opened a file (but can fork later) |
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*/ |
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struct mon_reader { |
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struct list_head r_link; |
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struct mon_bus *m_bus; |
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void *r_data; /* Use container_of instead? */ |
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void (*rnf_submit)(void *data, struct urb *urb); |
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void (*rnf_error)(void *data, struct urb *urb, int error); |
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void (*rnf_complete)(void *data, struct urb *urb, int status); |
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}; |
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void mon_reader_add(struct mon_bus *mbus, struct mon_reader *r); |
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void mon_reader_del(struct mon_bus *mbus, struct mon_reader *r); |
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struct mon_bus *mon_bus_lookup(unsigned int num); |
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int /*bool*/ mon_text_add(struct mon_bus *mbus, const struct usb_bus *ubus); |
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void mon_text_del(struct mon_bus *mbus); |
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int /*bool*/ mon_bin_add(struct mon_bus *mbus, const struct usb_bus *ubus); |
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void mon_bin_del(struct mon_bus *mbus); |
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int __init mon_text_init(void); |
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void mon_text_exit(void); |
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int __init mon_bin_init(void); |
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void mon_bin_exit(void); |
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/* |
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*/ |
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extern struct mutex mon_lock; |
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extern const struct file_operations mon_fops_stat; |
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extern struct mon_bus mon_bus0; /* Only for redundant checks */ |
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#endif /* __USB_MON_H */
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