How to determine what driver belongs to eth0 (ethX)?

How to determine what driver belongs to eth0 (ethX)?

[Ben Greear]

I'm trying to write a server that is able to run specific
diags against various ethernet drivers, knowing only the
interface name (ie eth0).

Can anyone think of a reasonably easy way to tell what driver
 (and thus what diag-code), to run against a particular interface?

This information is spit out at boot time, but processing the dmesg
log is almost too much of a hack for me to bear!!

These are the values I'm currently planning on probing and setting:

Link Speed (10/100, full/half, auto-negotiate)

After these are satisfied, then other things can be added as desired.

Thanks,
Ben

-- 
Ben Greear (greearb@candelatech.com)  http://www.candelatech.com
Author of ScryMUD:  scry.wanfear.com 4444        (Released under GPL)
http://scry.wanfear.com               http://scry.wanfear.com/~greear
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