144 lines
4.5 KiB
C
144 lines
4.5 KiB
C
/*
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* Copyright (c) 2006 Paolo Abeni (Italy)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Basic USB data struct
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* By Paolo Abeni <paolo.abeni@email.it>
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*/
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#ifndef lib_pcap_usb_h
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#define lib_pcap_usb_h
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#include <pcap/pcap-inttypes.h>
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/*
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* possible transfer mode
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*/
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#define URB_TRANSFER_IN 0x80
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#define URB_ISOCHRONOUS 0x0
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#define URB_INTERRUPT 0x1
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#define URB_CONTROL 0x2
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#define URB_BULK 0x3
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/*
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* possible event type
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*/
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#define URB_SUBMIT 'S'
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#define URB_COMPLETE 'C'
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#define URB_ERROR 'E'
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/*
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* USB setup header as defined in USB specification.
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* Appears at the front of each Control S-type packet in DLT_USB captures.
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*/
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typedef struct _usb_setup {
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uint8_t bmRequestType;
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uint8_t bRequest;
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uint16_t wValue;
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uint16_t wIndex;
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uint16_t wLength;
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} pcap_usb_setup;
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/*
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* Information from the URB for Isochronous transfers.
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*/
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typedef struct _iso_rec {
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int32_t error_count;
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int32_t numdesc;
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} iso_rec;
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/*
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* Header prepended by linux kernel to each event.
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* Appears at the front of each packet in DLT_USB_LINUX captures.
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*/
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typedef struct _usb_header {
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uint64_t id;
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uint8_t event_type;
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uint8_t transfer_type;
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uint8_t endpoint_number;
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uint8_t device_address;
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uint16_t bus_id;
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char setup_flag;/*if !=0 the urb setup header is not present*/
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char data_flag; /*if !=0 no urb data is present*/
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int64_t ts_sec;
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int32_t ts_usec;
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int32_t status;
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uint32_t urb_len;
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uint32_t data_len; /* amount of urb data really present in this event*/
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pcap_usb_setup setup;
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} pcap_usb_header;
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/*
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* Header prepended by linux kernel to each event for the 2.6.31
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* and later kernels; for the 2.6.21 through 2.6.30 kernels, the
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* "iso_rec" information, and the fields starting with "interval"
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* are zeroed-out padding fields.
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*
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* Appears at the front of each packet in DLT_USB_LINUX_MMAPPED captures.
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*/
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typedef struct _usb_header_mmapped {
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uint64_t id;
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uint8_t event_type;
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uint8_t transfer_type;
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uint8_t endpoint_number;
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uint8_t device_address;
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uint16_t bus_id;
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char setup_flag;/*if !=0 the urb setup header is not present*/
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char data_flag; /*if !=0 no urb data is present*/
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int64_t ts_sec;
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int32_t ts_usec;
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int32_t status;
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uint32_t urb_len;
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uint32_t data_len; /* amount of urb data really present in this event*/
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union {
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pcap_usb_setup setup;
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iso_rec iso;
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} s;
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int32_t interval; /* for Interrupt and Isochronous events */
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int32_t start_frame; /* for Isochronous events */
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uint32_t xfer_flags; /* copy of URB's transfer flags */
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uint32_t ndesc; /* number of isochronous descriptors */
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} pcap_usb_header_mmapped;
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/*
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* Isochronous descriptors; for isochronous transfers there might be
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* one or more of these at the beginning of the packet data. The
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* number of descriptors is given by the "ndesc" field in the header;
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* as indicated, in older kernels that don't put the descriptors at
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* the beginning of the packet, that field is zeroed out, so that field
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* can be trusted even in captures from older kernels.
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*/
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typedef struct _usb_isodesc {
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int32_t status;
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uint32_t offset;
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uint32_t len;
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uint8_t pad[4];
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} usb_isodesc;
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#endif
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