network device file

legolas_t · 06-21-2004, 11:41 PM

Anybody knows where can we find the network device file like eth0,eth1,... ? I had a look at /dev but it seems that they are not there.

adz · 06-22-2004, 12:29 AM

It's not a file. To see which interfaces are currently up type /sbin/ifconfig.

legolas_t · 06-22-2004, 02:48 AM

let's say I want to do ioctl on eth1. What file I should open?

adz · 06-22-2004, 08:45 AM

This would probably have been better asked in the programming forum. Or google.

legolas_t · 06-23-2004, 12:03 AM

Can somebody help me by moving this thread to programming forum?

adz · 06-23-2004, 12:19 AM

You may be able to click on the "report this thread to a moderator" link. Or start a new one.

david_ross · 06-24-2004, 02:47 PM

Moved: This thread is more suitable in Programming and has been moved accordingly to help your thread/question get the exposure it deserves.

itsme86 · 06-24-2004, 03:00 PM

You probably don't need to open a file for a ioctl() call. Which call are you trying to do?

infamous41md · 06-24-2004, 04:57 PM

network device ioctl's are abstracted thru the socket layer. you need to open up a socket, and fill in an ifreq structure for the interface u want to manipulate. for the ifreq structure, look in /usr/include/net/if.h . you fill in the ifrname member w/ the interface name, ie "eth0", and then depending on the ioctl u are using use the appropriate member of the union in the structure. have a loook at :
http://www.kohala.com/start/unpv12e.html
source tarball. the ioctl directory