Linux cli command NetPacket_USBMonpm

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NAME 🖥️ NetPacket_USBMonpm 🖥️

Assemble and disassemble USB packets captured via Linux USBMon interface.

VERSION

version 1.7.2

SYNOPSIS

use NetPacket::USBMon; $usb = NetPacket::USBMon->decode($raw_pkt);

DESCRIPTION

NetPacket::USBMon is a NetPacket decoder of USB packets captured via Linux USBMon interface.

Methods

“NetPacket::USBMon->decode([RAW PACKET])”
Decode a USB packet.

Instance data

The instance data for the NetPacket::UDP object consists of the following fields.

id
An in-kernel address of the USB Request Block (URB). Stays the same for the transaction submission and completion. Might be truncatted when reading a 64-bit capture with 32-bit file.

type
URB type. Character ‘S’, ‘C’ or ‘E’, for constants USB_TYPE_SUBMISSION, USB_TYPE_CALLBACK or USB_TYPE_ERROR.

xfer_type
Transfer type. USB_XFER_TYPE_ISO, USB_XFER_TYPE_INTR, USB_XFER_TYPE_CONTROL or USB_XFER_TYPE_BULK.

ep
Endpoint identification.

num
Endpoint number.

dir
Transfer direction. IN or OUT.

devnum
Device address.

busnum
Bus number.

flag_setup
Indicates whether setup is present and makes sense.

flag_data
Indicates whether data is present and makes sense.

ts_sec
Timestamp seconds since epoch. Subject to truncation with 32-bit Perl, which should be fine until 2038.

ts_usec
Timestamp microseconds.

status
URB status. Negative errno.

length
Length of data (submitted or actual).

len_cap
Delivered length

setup
Only present for packets with setup_flag turned on. Some contents are dependent on actual request type.

bmRequestType

bRequest

wValue

wIndex

wLength

iso

Only present for isochronous transfers.

error_count

numdesc

interval

Isochronous packet response rate.

start_frame
Only applicable to isochronous transfers.

xfer_flags
A copy of URB’s transfer_flags.

ndesc
Actual number of isochronous descriptors.

data
Packet payload.

Exports

default
none

exportable
USB_TYPE_SUBMISSION, USB_TYPE_CALLBACK, USB_TYPE_ERROR, USB_XFER_TYPE_ISO, USB_XFER_TYPE_INTR, USB_XFER_TYPE_CONTROL, USB_XFER_TYPE_BULK, USB_FLAG_SETUP_IRRELEVANT, USB_FLAG_SETUP_RELEVANT, USB_FLAG_DATA_ERROR, USB_FLAG_DATA_INCOMING, USB_FLAG_DATA_OUTGOING, USB_FLAG_DATA_PRESENT, USB_TYPE_VENDOR

tags
The following tags group together related exportable items.

“:types”
USB_TYPE_SUBMISSION, USB_TYPE_CALLBACK, USB_TYPE_ERROR

“:xfer_types”
USB_XFER_TYPE_ISO, USB_XFER_TYPE_INTR, USB_XFER_TYPE_CONTROL, USB_XFER_TYPE_BULK

“:setup_flags”
USB_FLAG_SETUP_IRRELEVANT, USB_FLAG_SETUP_RELEVANT

“:data_flags”
USB_FLAG_DATA_ERROR, USB_FLAG_DATA_INCOMING, USB_FLAG_DATA_OUTGOING, USB_FLAG_DATA_PRESENT

“:setup_types”
USB_TYPE_VENDOR

“:ALL”
All the above exportable items.

COPYRIGHT

Copyright (c) 2013 Lubomir Rintel.

This module is free software. You can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR

Lubomir Rintel <[email protected]>

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