[OpenWrt-Devel] Link detection - TP-Link Archer C7 v2
mcr at sandelman.ca
Wed May 27 15:27:24 EDT 2015
Richard Clark <richard at kerkhofftech.ca> wrote:
>> Hi Richard,
>> the link status is not propagated to the netdev because there's an
>> external switch chip between the CPU and the RJ45 plug on the outside.
>> There currently is no mechanism to propagate switch port states to Linux
>> netdev link states as such an mechanism has various implications.
> Ok, that makes sense. Just my dumb luck that the little portable
> GL-Inet I was developing on happens to not have an internal switch, so
> everything was fine there.
> So currently it looks like good chunk of routers seem to follow the same
> block diagram as the original WRT54g and are going to have the same
> issue. All the netifd handling to start/stop services on link state
> never gets used.
So, just to realize that you probably want active DNA anyway, as even
on a device that has directly connected ports, plugging in a dumb switch
will give you link, yet there is really nothing beyond it.
Detecting Network Attachment
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