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09644f186c
When the controller receive loop currently accepts an OpenFlow message, it does not validate the message length. As a result, a malicious or malfunctioning switch could cause send a message that would result in the receive loop making no forward progress. This patch ensures that the message length passed in the OpenFlow message is validated against the specified minimum, and forced to that value if it is smaller. Thanks to Samuel Jero (at Purdue's Dependable and Secure Distributed Systems Lab) for discovering this issue. Signed-off-by: Victor J. Orlikowski <vjo@duke.edu> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
What's Ryu
==========
Ryu is a component-based software defined networking framework.
Ryu provides software components with well defined API that make it
easy for developers to create new network management and control
applications. Ryu supports various protocols for managing network
devices, such as OpenFlow, Netconf, OF-config, etc. About OpenFlow,
Ryu supports fully 1.0, 1.2, 1.3, 1.4, 1.5 and Nicira Extensions.
All of the code is freely available under the Apache 2.0 license. Ryu
is fully written in Python.
Quick Start
===========
Installing Ryu is quite easy::
% pip install ryu
If you prefer to install Ryu from the source code::
% git clone git://github.com/osrg/ryu.git
% cd ryu; python ./setup.py install
If you want to write your Ryu application, have a look at
`Writing ryu application <http://ryu.readthedocs.io/en/latest/writing_ryu_app.html>`_ document.
After writing your application, just type::
% ryu-manager yourapp.py
Optional Requirements
=====================
Some functionalities of ryu requires extra packages:
- OF-Config requires lxml
- NETCONF requires paramiko
- BGP speaker (ssh console) requires paramiko
- OVSDB support requires ovs (Note: python 3.4 requires ovs>=2.6.0.dev0)
If you want to use the functionalities, please install requirements::
% pip install lxml
% pip install paramiko
% pip install ovs
Support
=======
Ryu Official site is `<http://osrg.github.io/ryu/>`_.
If you have any
questions, suggestions, and patches, the mailing list is available at
`ryu-devel ML
<https://lists.sourceforge.net/lists/listinfo/ryu-devel>`_.
`The ML archive at Gmane <http://dir.gmane.org/gmane.network.ryu.devel>`_
is also available.