ethernet cable state recognition

From: Claudio Melis (tziu.mebi_at_tiscali.it)
Date: 04/29/04 

Date: 29 Apr 2004 07:57:25 -0700

Hi to everyone.
I need to write a little application to recognize if the ethernet
cable is up or down. Not ethernet interface but really ethernet cable.
Someone can tell me where I will start? I try to see some files in
/proc/ directory but everithing "speak" about interface state.
I also tryed to start to write a simple C program. In this program I
read the infos in the ifreq structure like ifr_flags but I didn't find
the infos that I want.
I want to say that my kernel doesn's recognize cable state when I put
in/out it.
I must insert something in my kernel configuration?

I hope in some help...

Claudio Melis

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