Linux TCP/IP : Networking for... | Buy

The Linux TCP/IP Stack: Networking for Embedded Systems 2/E provides an updated, in-depth guide to implementing and using the Linux TCP/IP stack in embedded systems projects. It begins with a general overview of TCP/IP networking, with background information on applicable networking standards. From there, it details the TCP/IP implementation in Linux by following a packet of data as it flows through the stack from the sending system, out the wire, and back through the input side of the stack in the receiving machine. This unique approach gives programmers an inside look at the entire process.Throughout the text, topics of particular interest to engineers implementing embedded systems are discussed, such as sockets, network interfaces, application layer protocols, and practical considerations. This is a great resource for embedded systems programmers and engineers, as well as networking professionals interested in learning more about the implementation of Linux TCP/IP.

Acknowledgments

vii

Data Communication and Linux TCP/IP

1

(40)

A Few Beginning Words

1

(2)

Introduction

3

(1)

The Linux TCP/IP Source Code

4

(1)

A Brief History of Data Communication

5

(6)

The OSI Seven-Layer Network Model

11

(2)

Connection-Oriented and Connectionless Protocols

13

(1)

Packets and Frames

13

(1)

Broadband Networking versus Local Area Networking

14

(22)

The Digital Data Rate Hierarchy in the Public Network

36

(1)

Networking Standards

37

(2)

Summary

39

(2)

TCP/IP in Embedded Systems

41

(18)

Introduction

41

(1)

How We Got Here

42

(1)

A Few Words on TCP/IP Implementation

42

(1)

TCP/IP and the OSI Reference Model

43

(11)

TCP/IP in Embedded Systems

54

(3)

TCP/IP Standards, Numbers, and Practical Considerations

57

(1)

Summary

58

(1)

Linux Network Interface Drivers

59

(50)

A Few Words

59

(1)

Introduction

60

(1)

Network Interface Devices

61

(1)

The Network Device Structure, struct net_device

61

(9)

Network Device Initialization

70

(19)

Linux Network Interface Driver Facilities

89

(6)

Receiving Packets

95

(5)

Transmitting Packets

100

(3)

Notifier Chains and Network Interface Device Status Notification

103

(4)

Summary

107

(2)

Linux Sockets

109

(62)

A Few Words

109

(1)

Introduction

110

(1)

What is a Socket?

110

(1)

Socket, sock, and Other Data Structures for Managing Sockets

111

(13)

Socket Layer Initialization

124

(9)

The Transport Layer Interface and the Socket Application Programming Interface

133

(10)

Packet, Raw, Netlink, and Routing Sockets

143

(3)

Security and Linux Capabilities

146

(1)

A Note About the Socket API and IPv6

147

(2)

Implementation of the Socket API System Calls

149

(8)

Creation of a Socket

157

(8)

Netlink and Rtnetlink

165

(5)

Summary

170

(1)

The Linux TCP/IP Stack

171

(68)

A Few Words

171

(1)

Introduction

172

(1)

Glue and Infrastructure

173

(2)

Linux TCP/IP Stack Initialization

175

(5)

Kernel Threading

180

(6)

Packet Queuing Layer and Queuing Disciplines

186

(7)

Receiving Packets in Packet Queuing Layer, NET_RX_SOFTIRQ

193

(8)

Transport Layer De-Multiplexing and Internal Packet Routing

201

(4)

Cache Rich

205

(27)

In_device Structure for IPv4 Address Assignment, Multicast, and Configuration

232

(4)

Security, Stackable Destination, and XFRM

236

(1)

Some Practical Considerations

237

(1)

Summary

238

(1)

Socket Buffers and Linux Memory Allocation

239

(36)

A Few Words

239

(1)

Introduction

240

(1)

Requirements for TCP/IP Memory Allocation

241

(1)

Traditional Memory Allocation Schemes

242

(5)

Slab Allocation

247

(5)

Linux Socket Buffers

252

(8)

Socket Buffers, Fragmentation, and Segmentation

260

(4)

Socket Buffer Allocation and Lists

264

(2)

Socket Buffer Utility Functions

266

(8)

Some Practical Considerations

274

(1)

Summary

274

(1)

Sending the Data from the Socket through UDP and TCP

275

(74)

A Few Words

275

(1)

Introduction

276

(1)

Socket Layer Glue

276

(10)

Transport Layer Socket Initialization

286

(4)

Initiating a Connection at the Transport Layer

290

(7)

Sending Data from a Socket via UDP

297

(10)

Sending Data from a Socket via TCP

307

(10)

TCP Output

317

(5)

Some Key TCP Data Structures

322

(12)

TCP Timers

334

(14)

Summary

348

(1)

The Network Layer, IP

349

(110)

A Few Words

349

(1)

Introduction

350

(1)

Routing Theory

350

(1)

IPv4 Routing, Routing Cache, and the Routing Policy Database

351

(2)

IP Protocol Initialization

353

(1)

The Route Cache

354

(15)

The RPDB, the FIB, and the FIB Rules

369

(26)

Routing Input Packets

395

(12)

Routing Output Packets

407

(11)

Internet Peers and the IP Header ID Field

418

(1)

The Address Resolution Protocol

419

(12)

The Internet Control Message Protocol (ICMP)

431

(7)

Sending ICMP Packets

438

(2)

Multicast and IGMP

440

(8)

Sending Packets from IP

448

(2)

Receiving Packets in IP

450

(8)

Summary

458

(1)

Receiving Data in the Transport Layer, UDP, and TCP

459

(62)

A Few Words

459

(1)

Introduction

459

(1)

Receive-Side Packet Handling

460

(12)

Receiving Data in TCP

472

(14)

TCP Receive State Processing

486

(9)

Processing Data Segments in Established State

495

(8)

The TCP TIME_WAIT State

503

(7)

TCP Socket-Level Receive

510

(10)

Summary

520

(1)

A Protocol Family Implementation

521

(32)

A Few Words

521

(1)

Introduction

522

(1)

The AF_NADA Protocol Family

523

(2)

Address Family Initialization

525

(2)

Module Initialization

527

(2)

Socket Layer Interface

529

(10)

Receiving Packets in the AF_NADA Family

539

(4)

Sending Packets from the Socket Layer

543

(5)

The Test Setup for AF_NADA

548

(3)

Summary

551

(2)

Internet Protocol Version 6 (IPv6)

553

(50)

A Few Words

553

(1)

Introduction

554

(1)

Facilities in IPv6

554

(1)

IPv6 Addressing

555

(5)

IPv6 Packet Format

560

(2)

The IPv6 Implementation in Linux

562

(6)

IPv6 Socket Implementation

568

(3)

IPv6 Fragmentation and De-Fragmentation

571

(4)

IPv6 Output

575

(2)

IPv6 Input

577

(4)

IPv6 UDP

581

(3)

IPv6 TCP

584

(4)

The ICMP Protocol for IPv6, ICMPv6

588

(3)

IPv6 Neighbor Discovery

591

(5)

The Multicast Listener Discovery Protocol

596

(2)

Auto Configuration

598

(1)

Routing and the IPv6 FIB

598

(4)

Summary

602

(1)

Appendix A: RFCs

603

(2)

Appendix B: About the CD-ROM

605

(4)

Bibliography

609

(4)

Index

613

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