Download IPv6 in Embedded Micro-controllers

Table of Contents
1. INTRODUCTION .........................................................................................4
1.1. Specification...........................................................................................................4
2. HARDWARE................................................................................................5
2.1. Introduction...........................................................................................................5
2.2. Problem Statement................................................................................................5
2.3. Component Decisions............................................................................................6
2.4. Direct Memory Access (DMA) Support..............................................................6
2.5. Implementation .....................................................................................................7
2.6. Implementation Issues ..........................................................................................8
3. HARDWARE/SOFTWARE INTERFACE.....................................................9
3.1. Problem Statement................................................................................................9
3.2. The Zero-Copy Paradigm ....................................................................................9
3.3. The Memory Recycle Algorithm .........................................................................9
3.4. The Memory Recycle Algorithm – Problems and Solutions...........................11
3.4.1. Deadlock detection and buffer flushing.........................................................14
3.4.2. Dedicated Privileged buffers..........................................................................14
3.4.3. Packet-Assemble-Instructions (PAI) Queues ................................................14
3.5. Multi-Buffering ...................................................................................................16
3.6. Multicast Reception ............................................................................................16
3.7. Differences between the CS8900A and the RTL8019AS.................................17
3.8. Ethernet Driver Structure and Operation........................................................18
Non Hardware-Specific Functions...........................................................................18
3.8.1. Initialisation Code..........................................................................................18
3.8.2. The Interrupt Service Routine (ISR)..............................................................19
3.9. Implementation Issues ........................................................................................23
4. SOFTWARE ..............................................................................................24
4.1. Problem Statement..............................................................................................24
4.2. Stateless Address Auto-configuration ...............................................................24
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