Hi all,
after looking at driver source, I've figured out that rt_e1000e driver
do not support link detection.
I've added basic ethtool support for GLINK on e1000e, see attached patch.
Regards,
Elker
Il 25/06/2014 11.53, Elker Cavina ha scritto:
> Hi
> I'm using RTNet-0.9.13 with RTAI-3.9.2; my embedded pc has two e1000e
> ethernet ports (so rt_e1000e is employed).
>
> The first port is configured as standard linux (eth1), second port
> gets configured to rtnet (firstly unbinded by linux driver, then
> configured as rteth0). So far I'm working correctly in rtnet side;
> I'm also using rtcap and configured rteth0 on linux side and tcpdump
> works great to sniff realtime packets.
>
> Now I want to detect if carrier is lost on rtnet port; on linux
> managed ethernet port looking at /sys/class/net/eth1/carrier I can
> detect link loss, however in /sys/class/net/rteth0/carrier I always
> get link active even on cable disconnected.
>
> Digging into code I can see carrier detected and managed in
> rtdev->link_state, but I can't find the link to the sys filesystem or
> an ioctl call to detect link status.
>
> Is possible to detect link status on rt_e1000e driver?
> If not, can someone point to some code to implement this?
>
> Thanks,
> Elker
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