[etherlab-users] Kernel question

[John Erlandsson]

Thanks for helping everyone.

I will get to work on this later this week.




Keep you posted on the progress




//John



On 17 feb 2010 09:12 "Erwin Burgstaller"
<ethercat.berknapp at spamgourmet.com> wrote:

> I already sent a reply yesterday, but got hung, because of the
> attachment, so I've uploaded the attachment here instead:
> <http://rapidshare.com/files/351770968/e1000e-support-2.6.29.tar.bz2.h
> tml>
> 
> * Mon, Feb 15, 2010 - 17:53:57 +0100, John Erlandsson -
> john at lunatech.se:
> > Hi!
> > 
> > I'm new to etherlab, and in the process of setting up my first
> > master.
> > 
> > My system.
> > OS: Fedora 12
> > Kernel: 2.6.31.5-127
> > Ethernet card: Intel Corporation 82567LF Gigabit Network Connection
> > (rev 03)
> 
> The Problem with the e1000 is, from at least kernel 2.6.29 on, there
> are
> two drivers, the e1000 and the e1000e. For the e1000e there's no
> implementation for the EtherCAT master and the current e1000 does not
> work anymore for our version of the e1000 NIC. But the old driver does
> still work in the current kernels with some adaption to the new kernel
> structures, the e1000e has just some improvements for Gigabit
> networks,
> which isn't used by EtherCAT anyway.
> 
> So we're running kernel 2.6.29 with a little trick. I simply changed
> the
> code of the EtherCAT enabled driver for e1000, so it shows up as
> ec_e1000e and the Makefile for building ec_e1000e.ko So the kernel
> loads
> e1000e.ko and at start of the master it's replaced by ec_e1000e.ko
> 
> I've attached all the files you'll need for kernel 2.6.29 and the
> EtherCAT-Master 1.4. Maybe it will work with 2.6.31 too, I don't know.
> 
> You still have to run configure with e1000-enabled=yes and not with
> e1000e, but in /etc/sysconfig/ethercat you'll write:
> 
> DEVICE_MODULES="e1000e"
> 
> If you have an Ethernet adapter, for which the kernel still loads
> the older driver, the e1000, the attached sources will work too, but
> you'll have to change all occurences of e1000e in the code back to
> e1000.
> 
> In terms of the current version (1.5?), I've found it doesn't run
> stable. EoE doesn't work, the box crashes within 15 up to 30 seconds
> if
> a EoE enabled device is on the bus and I had some problems in
> releasing
> the master, also with EoE enabled. Without EoE it seems to work
> though.
> 
> Erwin
> 
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