    /*
     * Copyright (c) 2006 Paolo Abeni (Italy)
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     *
     * 1. Redistributions of source code must retain the above copyright
     * notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     * notice, this list of conditions and the following disclaimer in the
     * documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote
     * products derived from this software without specific prior written
     * permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * Basic USB data struct
     * By Paolo Abeni <paolo.abeni@email.it>
     *
     * @(#) $Header: /tcpdump/master/libpcap/pcap/usb.h,v 1.6 2007/09/22 02:06:08 guy Exp $
     */

    #ifndef _PCAP_USB_STRUCTS_H__
    #define _PCAP_USB_STRUCTS_H__

    /*
     * possible transfer mode
     */
    #define URB_TRANSFER_IN   0x80
    #define URB_ISOCHRONOUS   0x0
    #define URB_INTERRUPT     0x1
    #define URB_CONTROL       0x2
    #define URB_BULK          0x3

    /*
     * possible event type
     */
    #define URB_SUBMIT        'S'
    #define URB_COMPLETE      'C'
    #define URB_ERROR         'E'

    /*
     * USB setup header as defined in USB specification.
     * Appears at the front of each packet in DLT_USB captures.
     */
    typedef struct _usb_setup {
    	u_int8_t bmRequestType;
    	u_int8_t bRequest;
    	u_int16_t wValue;
    	u_int16_t wIndex;
    	u_int16_t wLength;
    } pcap_usb_setup;

    /*
     * Header prepended by linux kernel to each event.
     * Appears at the front of each packet in DLT_USB_LINUX captures.
     */
    typedef struct _usb_header {
    	u_int64_t id;
    	u_int8_t event_type;
    	u_int8_t transfer_type;
    	u_int8_t endpoint_number;
    	u_int8_t device_address;
    	u_int16_t bus_id;
    	char setup_flag;/*if !=0 the urb setup header is not present*/
    	char data_flag; /*if !=0 no urb data is present*/
    	int64_t ts_sec;
    	int32_t ts_usec;
    	int32_t status;
    	u_int32_t urb_len;
    	u_int32_t data_len; /* amount of urb data really present in this event*/
    	pcap_usb_setup setup;
    } pcap_usb_header;

    #endif

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