Dear Martin,

Thanks for the quickest response.
I've downloaded ethtool-1.6.tar.gz from the freshmeat.net, and
customized the "ethtool.c"
It's giving the Speed of 10Mb/s.

regards,
Srikanth.

Martin A. Brown wrote:

>Srikanth,
>
> : Any body having idea to find the NIC Capacity / BW (10 / 100 Mbps) ?
> : Whether the interface may be eth0/eth1/ppp0 or some other. Is there any
> : related IOCTL avialable, if so just give the linux-2.4.18 file path.
>
>For ethernet interfaces (devices), you should be able to determine the
>negotiated speed with either a device specific diagnostic utility
>(e.g., tulip-diag), or, with recent kernels and drivers, mii-diag,
>mii-tool, and the preferred ethtool.
>
>You can find the source to ethtool here:
>
>  http://freshmeat.net/projects/ethtool/?topic_id=146%2C150
>
>If this doesn't provide your answer, you may find a faster (if terser)
>answer from linux-net....as for determining speed of a serial link from
>the interface or device--I have no idea!  Maybe somebody else on the list?
>
>Best of luck,
>
>-Martin
>
>
>