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Understanding Linux Network Internals: Guided Tour to Networking on Linux Paperback – January 8, 2006
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"Anyone who works with Linux networking should have a copy to hand to help with those inexplicable problems and to better understand how it all works." - James Millen, BJHC & IM, November 2006
About the Author
Christian Benvenuti received his masters degree in Computer Science at the University of Bologna in Italy. He collaborated for a few years with the International Center for Theoretical Physics (ICTP) in Trieste, where he developed ad-hoc software based on the Linux kernel, was a scientific consultant for a project on remote collaboration, and served as an instructor for several training sessions on networking. The trainings, held mainly in Europe, Africa, and South America wereall based on Linux systems and addressed to scientists from developing countries, where the ICTP has been promoting Linux for many years. He occasionally collaborates with a non-profit organization founded by ICTP members, Collaborium.org, to continue promoting Linux on developing countries.In the past few years he worked as a software engineer for Cisco Systems in the Silicon Valley, where he focused on Layer two switching, high availability, and network security.
Top customer reviews
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Bottom line: Second edition... please... If updated I personally will use it as a textbook for advanced networking university course
Packet flow into and out of the Linux kernel is explained in detail. Functions from the Linux source are explained in detail. Packet reception and transmission by network adapters is explained in detail. There are also excellent detailed diagrams that accompany the text. When you combine the text and diagrams with the actual Linux source, you will have everything you need to accomplish your goals.
I used this book to write and modify device drivers for real and virtual network adapters, including the bridge and bond drivers. I used this book to write user mode code to queue and filter packets for dedicated network devices.
This book has everything you need to write networking code for Linux.
First it tells you how a NIC registers itself with the kernel. Then it describes an high-level introduction of how device drivers drive the device. Then it describes the interface between the kernel and the device drivers. It also discusses bridging & routing concepts.
If you want to delve into the linux networking code of the kernel or if you are actually looking to modify a part of the networking code, this book is a must read.
This book doesn't cover the transport layer though.! You have to refer to other sources to knit all the pieces of the puzzle together.!
My only fault with the book is that the transport layer protocols (UDP and TCP) are not covered. Benvenuti provides a list of important areas of the networking software that are not covered in the book but gives other references for most of these. I hope that he is working on a volume 2 to cover these areas.
I would sum up by saying that if you want to learn about the Linux networking software or network protocol software in general, start with this book. This book will give you the background to understand other, less well written books that cover the remaining networking software topics.