Re: ethernet driver

[Frederic V. <fv...@ho...>]

Hello,

I was thinking about working on IP over 1394 .
I would be willing to participate to that project.
Do you have the source code available ?

Frederic Villeneuve


----- Original Message -----
From: "Franck Bonin" <fra...@ya...>
To: <lin...@li...>
Sent: Tuesday, May 02, 2000 4:21 AM
Subject: ethernet driver


Since few weeks, I write an encapsuted ethernet driver
on the top of
the linux ieee1394 subsystem. By using the old 0.5
version of modules
with 2 adaptec boards : Hot Connect 8920, I was able
to transfer data
twice as fast as on common ethernet interface. But, I
found some problems
using the linux ieee1394 subsystem.

First, I was not able to find a way to transfer data
using
``unified'' write transactions. So I make few
modifications in the
ieee1394 core module.

The Hot Connect 8920 board use S200 speed bus. So the
max payload data
on a single paquet must be 1024 bytes. But, to avoid
kernel freezing, I
reduce the size of ethernet paquet to 200 bytes. If
not, after some
times, strangness append in the low level driver
``aic5800'', this
could freeze the 2 computers.

----------

Last week, I recieved 2 ADS PYRO OHCI boards. So I
download last CVS
version of modules and libraw. After succesfull
installation and
tests, I rebuild my ethernet driver, using the new
subsystem. And
unfortunatly I found other strange problems.

1. ``insmoding'' 2 times the ohci modules freezing one
or the other
   computer...

2. My ethernet driver is working (vor exemple, flood
ping is OK) but
   other kind of programs like ftp or telnet don't
work well: for an
   unknown reason, after a few time, the ohci driver
(or the board ?)
   stop recieve (or transmit) paquets, while it still
can transmit (or
   receive) some other paquets like ARP ones. And of
course, some
   times it crach !

___________

An other question :

Now, I will work on isochronous transmissions and
video stream. But
unfortunatly, I have not any camrecorder. So does
anyone know the way to
make believe others nodes that my PC-linux is a
camrecorder ?

----

Thanks for any comment or answer.

Franck Bonin



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