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NetPacket::USBMon(3pm) User Contributed Perl Documentation NetPacket::USBMon(3pm)
 

NAME

NetPacket::USBMon - Assemble and disassemble USB packets captured via Linux USBMon interface.

VERSION

version 1.5.0

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 <lkundrak@v3.sk>
2014-06-16 perl v5.18.2