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.
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napi
NAPI ("New API") is a modification 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.."
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.
netlink
Netlink is a flexible, robust, wire-format communications channel typically used for kernel to user communication although it can also be used for user to user and kernel to kernel communications.
802.11
Wireless networking in Linux is really easy to use. The wireless-tools allow to explore and configure wireless network.
todo
spam_blocks
By default Mediawiki turns on the "nofollow" in all references so spam is pointless, but that doesn't seem to stop anyone.
This site has some spam blocking suggestions from Bryce Harrington
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.
performance_testing
Tuning
Test Tools
There are a wide range of tools available for measuring network performance. Common ones are:
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.
talk:ifb
I do not have ifb installed on my kernel and i do not know how to install. There is no web where i can find information. Can anybody help me?
Answer: It is part of the standard kernel starting with 2.6.12.
To enable it you need to enable:
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