if_down Kernel Service

AIX Version 4.3 Kernel and Subsystems Technical Reference, Volume 1

Marks an interface as down.

#include <sys/types.h>
#include <sys/errno.h>
#include <net/if.h>

void if_down ( ifp)
register struct ifnet *ifp;

ifp

Specifies the ifnet structure associated with the interface array.

The if_down kernel service:

Marks an interface as down by setting the flags field of the ifnet structure appropriately.
Notifies the protocols of the transaction.
Flushes the output queue.

The ifp parameter specifies the ifnet structure associated with the interface as the structure to be marked as down.

The if_down kernel service can be called from either the process or interrupt environment.

The if_down service has no return values.

To mark an interface as down, invoke the if_down kernel service as follows:

if_down(ifp);

The if_down kernel service is part of Base Operating System (BOS) Runtime.

Network Kernel Services in AIX Kernel Extensions and Device Support Programming Concepts.