Re: Initial network device(s)

From: Andi Kleen (ak@suse.de)
Date: Tue Jul 11 2000 - 09:47:43 EST


On Tue, Jul 11, 2000 at 10:39:13AM -0400, Richard B. Johnson wrote:
>
>
> Does anybody know, during early startup of the kernel, what I
> can check to see if an Ethernet device "eth0" exists. This
> is before the network is started and before any possible
> network-device module would be installed. The idea is to
> install a network device module IFF the correct one is not
> already linked into the kernel. This is an embedded system
> so It doesn't use the current 'try to install if you get
> an ifconfig error' mechanism. It doesn't use 'ifconfig'.
> It uses socket ioctl(SIOCSxxxx) calls.

Just do a SIOCGIFFLAGS. If the device doesn't exist you'll get a ENODEV,
otherwise 0.

-Andi

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Sat Jul 15 2000 - 21:00:12 EST