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/*
* 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>
*/
#ifndef lib_pcap_usb_h
#define lib_pcap_usb_h
#include <pcap/pcap-inttypes.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 Control S-type packet in DLT_USB captures.
*/
typedef struct _usb_setup {
uint8_t bmRequestType;
uint8_t bRequest;
uint16_t wValue;
uint16_t wIndex;
uint16_t wLength;
} pcap_usb_setup;
/*
* Information from the URB for Isochronous transfers.
*/
typedef struct _iso_rec {
int32_t error_count;
int32_t numdesc;
} iso_rec;
/*
* Header prepended by linux kernel to each event.
* Appears at the front of each packet in DLT_USB_LINUX captures.
*/
typedef struct _usb_header {
uint64_t id;
uint8_t event_type;
uint8_t transfer_type;
uint8_t endpoint_number;
uint8_t device_address;
uint16_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;
uint32_t urb_len;
uint32_t data_len; /* amount of urb data really present in this event*/
pcap_usb_setup setup;
} pcap_usb_header;
/*
* Header prepended by linux kernel to each event for the 2.6.31
* and later kernels; for the 2.6.21 through 2.6.30 kernels, the
* "iso_rec" information, and the fields starting with "interval"
* are zeroed-out padding fields.
*
* Appears at the front of each packet in DLT_USB_LINUX_MMAPPED captures.
*/
typedef struct _usb_header_mmapped {
uint64_t id;
uint8_t event_type;
uint8_t transfer_type;
uint8_t endpoint_number;
uint8_t device_address;
uint16_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;
uint32_t urb_len;
uint32_t data_len; /* amount of urb data really present in this event*/
union {
pcap_usb_setup setup;
iso_rec iso;
} s;
int32_t interval; /* for Interrupt and Isochronous events */
int32_t start_frame; /* for Isochronous events */
uint32_t xfer_flags; /* copy of URB's transfer flags */
uint32_t ndesc; /* number of isochronous descriptors */
} pcap_usb_header_mmapped;
/*
* Isochronous descriptors; for isochronous transfers there might be
* one or more of these at the beginning of the packet data. The
* number of descriptors is given by the "ndesc" field in the header;
* as indicated, in older kernels that don't put the descriptors at
* the beginning of the packet, that field is zeroed out, so that field
* can be trusted even in captures from older kernels.
*/
typedef struct _usb_isodesc {
int32_t status;
uint32_t offset;
uint32_t len;
uint8_t pad[4];
} usb_isodesc;
#endif
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