Networking

This site covers Linux networking specific topics. It does not cover general networking questions, these are covered under the more general Wikipedia Computer Networks. See the External Links section for other useful resources.

General

Protocols

Drivers

Device Performance Enhancements

Hardware

Security

Mobility

Administration

Testing

Resources

 

Documentation Links

 

Related Links

 

bridge

Translations: russian , Turkish

mailing_lists

Networking related mailing lists:

sk_buff

All network-related queues and buffers in the kernel use a common data structure, struct sk_buff. This is a large struct containing all the control information required for the packet (datagram, cell, whatever). The sk_buff elements are organized as a doubly linked list, in such a way that it is very efficient to move an sk_buff element from the beginning/end of a list to the beginning/end of another list.

ifb

The Intermediate Functional Block device is the successor to the IMQ iptables module that was never integrated.
Advantage over current IMQ; cleaner in particular in SMP;
with a _lot_ less code. Old Dummy device functionality is preserved while new one only
kicks in if you use actions.

help:contents

No help specific to Linux Net wiki.

applications

This page summarizes the traffic patterns of applications.

bernd_eckenfels

toe

TCP Offload Engine (TOE) is the name for allowing the network driver to do part or all of the TCP/IP protocol processing. Vendors have made modifications to Linux to support TOE, and these changes have been submitted changes for kernel inclusion but were rejected.

iproute2

Introduction

iperf

iperf is a network performance testing tool hosted here

napi

NAPI ("New API") is an extension to the device driver packet processing framework, which is designed to improve the performance of high-speed networking. NAPI works through:

tcp_testing

TCP testing in Linux is an continuous process. These tests are concerned with the behavior and correctness of the TCP protocol in the Linux kernel.

More will be added to this page soon.

tcp

Linux has the most RFC compliant TCP implementation. Over time this page will have more details on it's implementation and areas such as congestion control.

"Based on all the measurements I’m aware of, Linux has the fastest & most complete stack of any OS.."

help:editing

Please see Help for editors]

pktgen

Linux packet generator is a tool to generate packets at very high speed
in the kernel.

generic_netlink_howto

This document gives a brief introduction to Generic Netlink, some simple
examples on how to use it and some recommendations on how to make the most of
the Generic Netlink communications interface. While this document does not
require that the reader has a detailed understanding of what Netlink is
and how it works, some basic Netlink knowledge is assumed. As usual, the
kernel source code is your best friend here.

tso

TCP Segmentation Offload is supported in Linux by the network device layer. A driver that wants to offer TSO needs to set the NETIF_F_TSO bit in the network device structure.

talk:vlan

Please ignore my following comment, I didn't see you already have mentioned the VLAN accelaration part...

regarding the last section, I haven't checked 2.6 kernel, but in 2.4 kernel, it does not like that it is always the case you replace net_if_rx() with vlan_hwaccel_rx(), in fact, seems to me only those interfaces support "hardware accelaration" uses the latter.

talk:generic_netlink_howto

What was the purpose of this last edit, 00:18, 18 April 2007 by JyqXan, it seems to remove large chunks of the text for no apparent reason? Unless JyqXan has an explanation I propose we revert the latest change.

There are a few of these random mutilations going on by randomly named users. No idea why! I think I might have accidentaly marked this as patrolled but don't know how to reverse. User:Imcdnzl

Okay, thanks both for the explanation and the fix.

linuxnet:community_portal

Please direct all questions to the linux-net mailing list.

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