Re: [Xenomai] Patch rtnet support Intel i217/i218 Ethernet Controller

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

On Tue, Jan 27, 2015 at 04:54:39PM +0100, Huy Cong Vu wrote:
> 
> 
> ----- Mail original -----
> > De: "Gilles Chanteperdrix" <gilles.chanteperdrix@xenomai.org>
> > À: "Huy Cong Vu" <huy-cong.vu@wandercraft.eu>
> > Cc: xenomai@xenomai.org
> > Envoyé: Mardi 27 Janvier 2015 16:39:03
> > Objet: Re: [Xenomai] Patch rtnet support Intel i217/i218 Ethernet Controller
> 
> > On Tue, Jan 27, 2015 at 04:12:48PM +0100, Huy Cong Vu wrote:
> >> Hello Xenomai group,
> >> I recently run a test of rtnet on xenomai-3-next on my Intel NUC D54250WYK with
> >> the Intel I218V Ethernet Controller.
> >> It is patched on linux 3.14.17. Here I attached the patch to make rtnet work
> >> with i217/i218 Intel family.
> >> Also, I found out that in rtpacket module, the declaration of packet_proto_drv
> >> lack of .device_count attribute, which makes the rtpacket & rtcap modules
> >> unable to loaded ( -EINVAL is returned), so I merge it in my patch too.
> >> I test on my system and all the following command is now working:
> >> modprobe rtnet
> >> modprobe rt_e1000e
> >> modprobe rtpacket
> >> modprobe rtcap
> >> rtifconfig rteth0 up
> >> ifconfig rteth0 up
> >> ifconfig rteth0-mac up
> >> But if I used the rteth0 interface, I can't unload rt_e1000e.
> >> Could you take a look and see if anything is wrong, and if you find it useful,
> >> merge it in your git repository.
> >> Best regards,
> > 
> > In Xenomai 3, you need to deconfigure the interface before you try
> > to unload it.
> 
> If I tried to turn off rteth0 interface after using it, I still can't unload rt_e1000e.
> For now, this work: 
> modprobe rt_e1000e
> modprobe rtpacket
> rtifconfig rteth0 up
> rtifconfig rteth0 down
> rmmod rt_e1000e
> rmmod rtpacket
> 
> This doesn't work:
> modprobe rt_e1000e
> modprobe rtpacket
> rtifconfig rteth0 up
> //Send datagram through rteth0 interface 
> rtifconfig rteth0 down
> rmmod rt_e1000e
> 
> Do I have to do anything special from application level to deconfigure rteth0 too?

No, rtifconfig down should be enough. Note that the module count
handling requires some patches in the I-pipe kernel. Since it was
reworked, it is entirely possible that there are some glitches with
it, or that some necessary change in rt_e1000e.c is missing.

Also, since the multiple modules system will not fly for building
rtnet and its modules into the kernel, this will be reworked.

Other than that, does rtnet work for you ?

-- 
					    Gilles.