[etherlab-users] Xenomai 3 and RTDM's Net drivers.

[Edouard Tisserant]

Hi Per

I should have documented this : rtdmnet.ko use RAW packet socket.

Don't forget to build and load rtpacket module to make it available.

Hereafter are commands I use to run a test with rt-FEC driver:


modprobe rt_fec
modprobe rtpacket
rtifconfig rteth0 up

cat > /etc/sysconfig/ethercat <<EOF
MASTER0_DEVICE="ff:ff:ff:ff:ff:ff"
DEVICE_MODULES="rtdmnet"
EOF

/etc/init.d/ethercat start

ethercat slaves


Cheers,

Edouard



On 14/11/2018 17:03, Per Oberg wrote:
> Hi 
>
> I tried this today, but I ran into some troubles. Most of my troubles are probably due to me being new to etherlab/ethercat.
>
> However, this is what happened:
>
> In lack of a valid ethernet-card on the right computer running the right kernel I tried using the xenomai rt_loopback device and got 
>
> [   82.574576] EtherCAT: 1 master waiting for devices.
> [  104.779742] ec_rtdmnet: EtherCAT master RTnet Ethernet device module 1.5.2 32c9a2dea9ed
> [  104.779750] EtherCAT: Accepting 00:00:00:00:00:00 as main device for master 0.
> [  104.779751]  rtdm_socket() = -97!
> [  104.779752] EtherCAT 0: Releasing main device 00:00:00:00:00:00.
>
> -97 usually means EAFNOSUPPORT or "Address family not supported by protocol"
>
> Is that to be expected when using the loopback-device or am I doing something else wrong?
>
> B.t.w., this is the commands that I used:
>
>> sudo modprobe rt_loopback
>> sudo insmod ./master/ec_master.ko main_devices=ff:ff:ff:ff:ff:ff debug_level=1
>> sudo insmod ./devices/ec_rtdmnet.ko 
> My build is setup using :
>> ./configure --enable-rtdm --with-xenomai-dir=/opt/xenomai --with-linux-dir=/.../xenomai-kernel-ipipe.git --disable-r8169 --disable-8139too
> Kernel is 4.9.38 
>
> Xenomai is 3.0.7
>
> Per Öberg 
>
> ----- Den 13 nov 2018, på kl 19:05, Per Öberg pero at wolfram.com skrev:
>
>>> EtherLab master over real-time Ethernet drivers from Xenomai 3 just works !
>> This is great news!
>> I was just looking for Xenomai / EtherCat for x86_64 so I will definitely take
>> this out for a spin.
>> Best Regards
>> Per Öberg
>>>> I also added a new device : devices/rtdmnet.c. It is really similar to
>>>> devices/generic.c, but it uses RTDM's Net drivers instead of Linux
>>>> drivers. This new device still needs fixing, and only works in idle mode
>>>> for now - working on a fix right now.
>>> Now fixed.
>
>>> For the record, and in case anyone would want to reproduce the
>>> experiment on I.mx6 with real-time FEC driver, patches for Xenomai
>>> 3.0.7 to enable and fix FEC driver are attached. Tested with Linux
>>> 4.9.51.
>>> Best regards
>>> Edouard Tisserant
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