[ECOS] Re: How to get Ethernet link status?

Kelvin Lawson news@kibosh.org
Wed Dec 17 18:20:00 GMT 2008


>> What is the official method used to get the link status of an
>> interface (up/down, 10/100/1000, full/half duplex)?

<snip>

> A standard way of doing this would be to use the ioctl SIOCGETIFMEDIA, 
> and check the IFM_AVALID and IFM_ACTIVE flags in the IFM status returned.

Note that we did this for link up/down status only, but I would assume 
you can query the link speed etc via the same interface.

Kelvin.


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