Mac Dev Center Mac OS X Reference Library Drivers, Kernel, & Hardware: User-Space Device Access I/O Kit Framework Reference

IONetworkData.h

Includes:

Overview

Use the links in the table of contents to the left to access the documentation.

Classes

IONetworkData: An object that manages a fixed-size named buffer.

Enumerated Types

NetworkDataAccessTypes: Constants that describe access types.
NetworkDataBufferTypes: The types of data buffers that can be managed by an IONetworkData object.

NetworkDataAccessTypes

Constants that describe access types.

enum { 
    kIONetworkDataAccessTypeRead = 0x01, 
    kIONetworkDataAccessTypeWrite = 0x02, 
    kIONetworkDataAccessTypeReset = 0x04, 
    kIONetworkDataAccessTypeSerialize = 0x08, 
    kIONetworkDataAccessTypeMask = 0xff 
};

Constants

kIONetworkDataAccessTypeRead: Read access.
kIONetworkDataAccessTypeWrite: Write access.
kIONetworkDataAccessTypeReset: Reset access.
kIONetworkDataAccessTypeSerialize: Serialization access.

NetworkDataBufferTypes

The types of data buffers that can be managed by an IONetworkData object.

enum { 
    kIONetworkDataBufferTypeInternal = 0, 
    kIONetworkDataBufferTypeExternal, 
    kIONetworkDataBufferTypeNone 
};

Constants

kIONetworkDataBufferTypeInternal: An internal data buffer allocated by the init() method.
kIONetworkDataBufferTypeExternal: An external (persistent) data buffer.
kIONetworkDataBufferTypeNone: No data buffer. The only useful action perfomed by an IONetworkData object with this buffer type is to call the access notification handler.

Macro Definitions

kIONetworkDataAccessTypes: A property of IONetworkData objects.
kIONetworkDataBasicAccessTypes
kIONetworkDataBytes: A property of IONetworkData objects.
kIONetworkDataSize: A property of IONetworkData objects.

kIONetworkDataAccessTypes

A property of IONetworkData objects.

#define kIONetworkDataAccessTypes "Access Types"

Discussion

The kIONetworkDataAccessTypes property is an OSNumber that describes the supported access types of an IONetworkData object.

kIONetworkDataBasicAccessTypes

#define kIONetworkDataBasicAccessTypes \ 
    (kIONetworkDataAccessTypeRead | kIONetworkDataAccessTypeSerialize)

Discussion

The default access types supported by an IONetworkData object. Allow read() and serialize().

kIONetworkDataBytes

A property of IONetworkData objects.

#define kIONetworkDataBytes "Data"

Discussion

The kIONetworkDataBytes property is an OSData that describes the data buffer of an IONetworkData object. This property is present only if kIONetworkDataAccessTypeSerialize access is supported.

kIONetworkDataSize

A property of IONetworkData objects.

#define kIONetworkDataSize "Size"

Discussion

The kIONetworkDataSize property is an OSNumber that describes the size of the data buffer of an IONetworkData object.

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Last Updated: 2009-10-15