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Open vSwitch Plus VXLAN

branch: master

netdev-linux: Skip NETDEV_UP test in netdev_linux_set_etheraddr() for…

… taps.

netdev_turn_flags_off() does nothing if the flags that one turns off are
already off.

Reported-by: Ethan Jackson <>
Signed-off-by: Ben Pfaff <>
Acked-by: Ethan Jackson <>
latest commit bbd5b6f44b
Ben Pfaff blp authored
Octocat-spinner-32 build-aux
Octocat-spinner-32 datapath
Octocat-spinner-32 debian Set release date for 1.10.0. May 01, 2013
Octocat-spinner-32 include
Octocat-spinner-32 lib
Octocat-spinner-32 m4 deal with platforms where backtrace() is in a different library than … April 23, 2013
Octocat-spinner-32 ofproto ofproto-dpif: Make fin_timeout work when governor kicks in. May 13, 2013
Octocat-spinner-32 ovsdb
Octocat-spinner-32 python
Octocat-spinner-32 rhel
Octocat-spinner-32 tests OpenFlow-level flow-based tunneling support. May 10, 2013
Octocat-spinner-32 third-party
Octocat-spinner-32 tutorial
Octocat-spinner-32 utilities
Octocat-spinner-32 vswitchd
Octocat-spinner-32 xenserver
Octocat-spinner-32 .gitignore tests: Add code coverage for Python. March 02, 2012
Octocat-spinner-32 AUTHORS ofproto-dpif: Make fin_timeout work when governor kicks in. May 13, 2013
Octocat-spinner-32 COPYING sFlow: add Sun Industry Standards Source License 1.1 as licensing option December 10, 2011
Octocat-spinner-32 CodingStyle CodingStyle: Mention our common return value conventions. March 04, 2013
Octocat-spinner-32 DESIGN tests: Add more tests for VLAN match encoding and decoding. July 19, 2012
Octocat-spinner-32 FAQ FAQ: Indicate LTS is now the 1.9.x series. May 02, 2013
Octocat-spinner-32 INSTALL INSTALL: Finish sentence about running tests with valgrind. May 09, 2013
Octocat-spinner-32 INSTALL.Debian INSTALL.Debian: Update instructions related to package ordering. April 23, 2013
Octocat-spinner-32 INSTALL.Fedora Update INSTALL.Fedora to mention Fedora 17 instead of Fedora 15 October 23, 2012
Octocat-spinner-32 INSTALL.KVM netdev implementation for FreeBSD July 26, 2012
Octocat-spinner-32 INSTALL.Libvirt openvswitch: Remove Linux bridge compatibility. December 27, 2012
Octocat-spinner-32 INSTALL.RHEL rhel: Remove the firewall hole that we create for GRE. April 16, 2013
Octocat-spinner-32 INSTALL.SSL
Octocat-spinner-32 INSTALL.XenServer
Octocat-spinner-32 INSTALL.userspace netdev implementation for FreeBSD July 26, 2012
Octocat-spinner-32 IntegrationGuide
Octocat-spinner-32 Add a tutorial for advanced Open vSwitch features. April 19, 2013
Octocat-spinner-32 NEWS OpenFlow-level flow-based tunneling support. May 10, 2013
Octocat-spinner-32 NOTICE netdev implementation for FreeBSD July 26, 2012
Octocat-spinner-32 OPENFLOW-1.1+
Octocat-spinner-32 PORTING
Octocat-spinner-32 README
Octocat-spinner-32 README-gcov tests: Remove bit-rotted support for "lcov". July 20, 2012
Octocat-spinner-32 README-lisp
Octocat-spinner-32 REPORTING-BUGS
Octocat-spinner-32 SubmittingPatches
Octocat-spinner-32 WHY-OVS
Octocat-spinner-32 acinclude.m4 datapath: Fix compilation with Linux kernel 3.7. May 13, 2013
Octocat-spinner-32 debian: Check for accurate Debian changelog version at build time too. July 21, 2010
Octocat-spinner-32 Allow master to build on Fedora with the recent threading changes May 06, 2013
Octocat-spinner-32 vswitchd: Document coverage/show command. March 25, 2013
                 Open vSwitch <>

What is Open vSwitch?

Open vSwitch is a multilayer software switch licensed under the open
source Apache 2 license.  Our goal is to implement a production
quality switch platform that supports standard management interfaces
and opens the forwarding functions to programmatic extension and

Open vSwitch is well suited to function as a virtual switch in VM
environments.  In addition to exposing standard control and visibility
interfaces to the virtual networking layer, it was designed to support
distribution across multiple physical servers.  Open vSwitch supports
multiple Linux-based virtualization technologies including
Xen/XenServer, KVM, and VirtualBox.

The bulk of the code is written in platform-independent C and is
easily ported to other environments.  The current release of Open
vSwitch supports the following features:

    * Standard 802.1Q VLAN model with trunk and access ports
    * NIC bonding with or without LACP on upstream switch
    * NetFlow, sFlow(R), and mirroring for increased visibility
    * QoS (Quality of Service) configuration, plus policing
    * GRE, GRE over IPSEC, VXLAN, and LISP tunneling
    * 802.1ag connectivity fault management
    * OpenFlow 1.0 plus numerous extensions
    * Transactional configuration database with C and Python bindings
    * High-performance forwarding using a Linux kernel module

The included Linux kernel module supports Linux 2.6.18 and up, with
testing focused on 2.6.32 with Centos and Xen patches.  Open vSwitch
also has special support for Citrix XenServer and Red Hat Enterprise
Linux hosts.

Open vSwitch can also operate, at a cost in performance, entirely in
userspace, without assistance from a kernel module.  This userspace
implementation should be easier to port than the kernel-based switch.
It is considered experimental.

What's here?

The main components of this distribution are:

    * ovs-vswitchd, a daemon that implements the switch, along with 
      a companion Linux kernel module for flow-based switching.

    * ovsdb-server, a lightweight database server that ovs-vswitchd
      queries to obtain its configuration.

    * ovs-dpctl, a tool for configuring the switch kernel module.

    * Scripts and specs for building RPMs for Citrix XenServer and Red
      Hat Enterprise Linux.  The XenServer RPMs allow Open vSwitch to
      be installed on a Citrix XenServer host as a drop-in replacement
      for its switch, with additional functionality.

    * ovs-vsctl, a utility for querying and updating the configuration
      of ovs-vswitchd.

    * ovs-appctl, a utility that sends commands to running Open
      vSwitch daemons.

    * ovsdbmonitor, a GUI tool for remotely viewing OVS databases and
      OpenFlow flow tables.

Open vSwitch also provides some tools:

    * ovs-controller, a simple OpenFlow controller.

    * ovs-ofctl, a utility for querying and controlling OpenFlow
      switches and controllers.

    * ovs-pki, a utility for creating and managing the public-key
      infrastructure for OpenFlow switches.

    * A patch to tcpdump that enables it to parse OpenFlow messages.

What other documentation is available?

To install Open vSwitch on a regular Linux or FreeBSD host, please
read INSTALL.  For specifics around installation on a specific
platform, please see one of these files:

    - INSTALL.Debian
    - INSTALL.Fedora
    - INSTALL.XenServer

To use Open vSwitch...

    - ...with KVM on Linux, read INSTALL, read INSTALL.KVM.

    - ...with Libvirt, read INSTALL.Libvirt.

    - ...without using a kernel module, read INSTALL.userspace.

For answers to common questions, read FAQ.

To learn how to set up SSL support for Open vSwitch, read INSTALL.SSL.

To learn about some advanced features of the Open vSwitch software
switch, read the tutorial in tutorial/Tutorial.

Each Open vSwitch userspace program is accompanied by a manpage.  Many
of the manpages are customized to your configuration as part of the
build process, so we recommend building Open vSwitch before reading
the manpages.

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