Inside Macintosh: Networking /

Chapter 11 - Ethernet, Token Ring, and Fiber Distributed Data Interface

This chapter describes how to write data directly to an Ethernet, token ring, or Fiber Distributed Data Interface (FDDI) driver. For Ethernet Phase 1 packets, that is, the original version of Ethernet packets, this chapter also describes how to read data
directly from an Ethernet driver using either the default protocol handler that Apple provides or your own protocol handler.

For Phase 2 packets, that is, IEEE 802.2 packets, you must use the interface to the Link-Access Protocol (LAP) Manager to attach your protocol handler to read data
from an Ethernet, token ring, or FDDI driver.

For a description of how to attach a protocol handler to read 802.2 packets, see the chapter "Link-Access Protocol (LAP) Manager" in this book, which also explains Ethernet Phase 1 packets and Phase 2 packets for Ethernet, token ring, and FDDI.

For an introduction to the hardware and software of an entire AppleTalk network,
see Understanding Computer Networks and the AppleTalk Network System Overview. For information on designing circuit cards and device drivers for Macintosh computers,
see Designing Cards and Drivers for the Macintosh Family, second edition.

To use this chapter, you should be familiar with the information on Ethernet and token ring provided in Inside AppleTalk, second edition. (Inside AppleTalk does not address FDDI.) To gain an understanding of the relationship between the AppleTalk data links and the physical device drivers, see the chapter "Introduction to AppleTalk" in this book, which also introduces some of the terminology used in this chapter.

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Chapter Contents

About Ethernet, Token Ring, and FDDI Support

About Multivendor Network Interface Controller (NIC) Support

About Multicast Addressing

Using Ethernet, Token Ring, and FDDI Drivers

Using the Ethernet Driver

Opening the Ethernet Driver

Using a Write-Data Structure to Transmit Ethernet Data

Using the Default Ethernet Protocol Handler to Read Data

Using Your Own Ethernet Protocol Handler to Read Data

How the .ENET Driver Calls Your Protocol Handler

How Your Protocol Handler Calls the .ENET Driver Routines

Changing the Ethernet Hardware Address

Using the Token Ring Driver

Applying Ethernet Functions

Sending and Receiving Data

Using the FDDI Driver

Applying Ethernet Functions

Sending and Receiving Data

Ethernet, Token Ring, and FDDI Reference

Data Structures

The Write-Data Structure

The Parameter Block for Ethernet, Token Ring, and FDDI Driver Functions

Routines

Attaching and Detaching an Ethernet Protocol Handler

Writing and Reading Ethernet Packets

Obtaining Information About the Ethernet Driver and Switching Its Mode

Adding and Removing Ethernet Multicast Addresses

Summary of Ethernet, Token Ring, and FDDI

Pascal Summary

Constants

Data Structures

Routines

Attaching and Detaching an Ethernet Protocol Handler

Writing and Reading Ethernet Packets

Obtaining Information About the Ethernet Driver and Switching Its Mode

Adding and Removing Ethernet Multicast Addresses

C Summary

Constants

Data Types

Routines

Attaching and Detaching an Ethernet Protocol Handler

Writing and Reading Ethernet Packets

Obtaining Information About the Ethernet Driver and Switching Its Mode

Adding and Removing Ethernet Multicast Addresses

Assembly-Language Summary

Constants

Data Structures

EParamBlock Parameter Block

Result Codes