RTEMS 4.7.3 On-Line Library

BSP and Device Driver Development Guide

15.11: Write the Driver IOCTL Function

This function handles ioctl requests directed at the device. The ioctl commands which must be handled are:

SIOCGIFADDR

SIOCSIFADDR

If the device is an Ethernet interface these commands should be passed on to ether_ioctl.

SIOCSIFFLAGS

This command should be used to start or stop the device, depending on the state of the interface IFF_UP and IFF_RUNNING bits in if_flags:

IFF_RUNNING

Stop the device.

IFF_UP

Start the device.

IFF_UP|IFF_RUNNING

Stop then start the device.

0

Do nothing.

BSP and Device Driver Development Guide

Copyright © 1988-2004 OAR Corporation