1 files changed, 51 insertions, 0 deletions

diff --git a/drivers/usb/mon/usb_mon.h b/drivers/usb/mon/usb_mon.h
new file mode 100644
index 000000000000..ed35c18a5c44
--- /dev/null
+++ b/drivers/usb/mon/usb_mon.h
@@ -0,0 +1,51 @@
+/*
+ * The USB Monitor, inspired by Dave Harding's USBMon.
+ */
+
+#ifndef __USB_MON_H
+#define __USB_MON_H
+
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/kref.h>
+/* #include <linux/usb.h> */    /* We use struct pointers only in this header */
+
+#define TAG "usbmon"
+
+struct mon_bus {
+        struct list_head bus_link;
+        spinlock_t lock;
+        struct dentry *dent_s;          /* Debugging file */
+        struct dentry *dent_t;          /* Text interface file */
+        struct usb_bus *u_bus;
+
+        /* Ref */
+        int nreaders;                   /* Under mon_lock AND mbus->lock */
+        struct list_head r_list;        /* Chain of readers (usually one) */
+        struct kref ref;                /* Under mon_lock */
+
+        /* Stats */
+        unsigned int cnt_text_lost;
+};
+
+/*
+ * An instance of a process which opened a file (but can fork later)
+ */
+struct mon_reader {
+        struct list_head r_link;
+        struct mon_bus *m_bus;
+        void *r_data;           /* Use container_of instead? */
+
+        void (*rnf_submit)(void *data, struct urb *urb);
+        void (*rnf_complete)(void *data, struct urb *urb);
+};
+
+void mon_reader_add(struct mon_bus *mbus, struct mon_reader *r);
+void mon_reader_del(struct mon_bus *mbus, struct mon_reader *r);
+
+extern struct semaphore mon_lock;
+
+extern struct file_operations mon_fops_text;
+extern struct file_operations mon_fops_stat;
+
+#endif /* __USB_MON_H */