NAME

       irdadump - monitors the IrDA traffic on one or more links.

SYNOPSIS

       irdadump [ -b ] [ -c n ] [ -d ] [ -x ] [ -s n ] [ -t ] [ -l ] [ -v ] [ -i device ]

OPTIONS

       -b dump bytes in columns

       -c n set snapcols for byte printing with -b option

       -d prints the time difference between the current and the previous frame

       -x dump frame (bytes and ascii)

       -s n set snaplen for -b and -x option

       -t force TTP decoding of unknown connections

       -l set line buffering on output file

       -v verbose

       -i device interface

DESCRIPTION

       irdadump is a tool for monitoring the IrDA traffic on one or more links. Just write "make"
       to compile the program. When you run the program, you should  be  able  to  see  the  IrDA
       traffic (if any).

       One  advantage  of  implementing IrDA device drivers as network device drivers is that you
       should be able to attach sniffers to the device (or actually the packet type).  That  way,
       it  is  possible  to use a really handy utility called irdadump (instead of tcpdump). This
       will make debugging MUCH easier. Linux-2.2 implements the BPF (Berkeley Packet Filter), so
       its  possible  to  filter out exactly the frames you want to see.  You may use hostname to
       separate different machines names.  Or grep to filter the output, too.

       irdadump must be run as root or installed setuid root, as it requires root privileges.

EXAMPLES

       The output should look something like this:

       / # ./irdadump
       20:11:45.412199 xid:cmd 0x0015c23b > 0xffffffff S=6 s=0
       20:11:45.492137 xid:cmd 0x0015c23b > 0xffffffff S=6 s=1
       20:11:45.572137 xid:cmd 0x0015c23b > 0xffffffff S=6 s=2
       20:11:45.652208 xid:cmd 0x0015c23b > 0xffffffff S=6 s=3
       20:11:45.732137 xid:cmd 0x0015c23b > 0xffffffff S=6 s=4
       20:11:45.812137 xid:cmd 0x0015c23b > 0xffffffff S=6 s=5
       20:11:45.892175 xid:cmd 0x0015c23b > 0xffffffff S=6 s=255 Linux
       20:11:45.902362 xid:rsp 0xf7be8388 < 0x0015c23b S=6 s=5 ACTiSYS IR100M
       20:11:48.412197 xid:cmd 0x0015c23b > 0xffffffff S=6 s=0
       20:11:48.492656 xid:cmd 0x0015c23b > 0xffffffff S=6 s=1
       20:11:48.572177 xid:cmd 0x0015c23b > 0xffffffff S=6 s=2
       20:11:48.652169 xid:cmd 0x0015c23b > 0xffffffff S=6 s=3
       20:11:48.732177 xid:cmd 0x0015c23b > 0xffffffff S=6 s=4
       20:11:48.812153 xid:cmd 0x0015c23b > 0xffffffff S=6 s=5
       20:11:48.822371 xid:rsp 0xf7be8388 < 0x0015c23b S=6 s=4 ACTiSYS IR100M

       15 packets received by filter
       Turning on the "-d" option will make  irdadump  print  the  time  difference  between  the
       current and the previous frame:

       / # ./irdadump -d
       20:11:18.412475 (0982.06 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=0
       20:11:18.492345 (0079.87 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=1
       20:11:18.572376 (0080.03 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=2
       20:11:18.652979 (0080.60 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=3
       20:11:18.732354 (0079.38 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=4
       20:11:18.755093 (0022.74 ms) xid:rsp 0xf7be8388 < 0x0015c23b S=6 s=3 ACTiSYS IR100M
       20:11:18.812350 (0057.26 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=5
       20:11:18.892518 (0080.17 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=255 Linux
       20:11:21.412486 (2519.97 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=0
       20:11:21.492395 (0079.91 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=1
       20:11:21.572368 (0079.97 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=2
       20:11:21.652405 (0080.04 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=3
       20:11:21.732458 (0080.05 ms) xid:cmd 0x0015c23b > 0xffffffff S=6 s=4
       irdadump must be run as root or installed setuid root, as it requires root privileges.

       irdadump  -d  -x  -s 256 will check the contents of the frames. This should tell us if the
       frames have malformed content, or if the irda stack is doing something wrong.

DIAGNOSTICS

       N.N.

BUGS

       N.N.

SEE ALSO

       irattach(8), irdaping(8), irdadump(8), findchip(8), irpsion5(8), modprobe(8)

       Linux/IrDA      Project      http://irda.sourceforge.net      -*-      Linux/IrDA-Tutorial
       http://www.hpl.hp.com/personal/Jean_Tourrilhes/IrDA/index.html      -*-     Infrared-HOWTO
       http://tuxmobil.org/howtos.html

AUTHOR

       This manual page is written by Werner Heuser  <wehe@tuxmobil.org>.  It  is  based  on  the
       READMEs from irda-utils by the Linux/IrDA Project and the Linux/IrDA-Tutorial.

COPYRIGHT

       Copyright (c) 2001 Werner Heuser

       Permission  is  granted to copy, distribute and/or modify this document under the terms of
       the GNU Free Documentation License (GFDL), Version 1.1 or any later version  published  by
       the  Free  Software  Foundation;  with  no Invariant Sections, no Front-Cover Texts and no
       Back-Cover Texts.

                                           03 July 2006                               IRDADUMP(8)