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AIX Version 4.3 Kernel and Subsystems Technical Reference, Volume 1
if_down Kernel Service
Purpose
Marks an interface as down.
Syntax
#include <sys/types.h>
#include <sys/errno.h>
#include <net/if.h>
void if_down (
ifp)
register struct ifnet *ifp;
Parameter
ifp |
Specifies the ifnet structure associated with the interface array. |
Description
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.
Return Values
The if_down service has no return values.
Example
To mark an interface as down, invoke the
if_down
kernel service as follows:
if_down(ifp);
Implementation Specifics
The if_down kernel service is part of Base
Operating System (BOS) Runtime.
Related Information
Network Kernel
Services in AIX Kernel Extensions and Device Support Programming Concepts.
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