openstack/neutron
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Update L3 agent extensions devref

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The L3 agent extensions devref was not properly included into the
documentation tree, so it would not appear in the online devref.  Also,
there were a few updates to the agent extensions documentation to
properly show the updated file names.

Change-Id: I5f55f68d2c251dfa993668024ee312085b605a8a
This commit is contained in:
Nate Johnston 2016-09-06 18:59:46 +00:00
parent 1cf8e5ab5a
commit b0cb041ee9
4 changed files with 28 additions and 20 deletions
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43
doc/source/devref/agent_extensions.rst
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@ -42,19 +42,20 @@ Interactions with the agent API object are in the following order:
#. The manager passes the agent API object into each extension.
#. An extension calls the new agent API object method to receive, for instance, bridge wrappers with cookies allocated.
::
+-----------+
| Agent API +--------------------------------------------------+
+-----+-----+ |
| +-----------+ |
|1 +--+ Extension +--+ |
| | +-----------+ | |
+---+-+-+---+ 2 +--------------+ 3 | | 4 |
| Agent +-----+ Ext. manager +-----+--+ .... +--+-----+
+-----------+ +--------------+ | |
| +-----------+ |
+--+ Extension +--+
+-----------+
+-----------+
| Agent API +--------------------------------------------------+
+-----+-----+ |
| +-----------+ |
|1 +--+ Extension +--+ |
| | +-----------+ | |
+---+-+-+---+ 2 +--------------+ 3 | | 4 |
| Agent +-----+ Ext. manager +-----+--+ .... +--+-----+
+-----------+ +--------------+ | |
| +-----------+ |
+--+ Extension +--+
+-----------+
Each extension is referenced through a stevedore entry point defined within a
specific namespace. For example, L2 extensions are referenced through the
@ -66,8 +67,8 @@ The relevant modules are:
This module defines an abstract extension interface for all agent
extensions across L2 and L3.
* neutron.agent.l2.agent_extension:
* neutron.agent.l3.agent_extension:
* neutron.agent.l2.l2_agent_extension:
* neutron.agent.l3.l3_agent_extension:
These modules subclass
neutron.agent.agent_extension.AgentExtension and define a
layer-specific abstract extension interface.
@ -76,8 +77,8 @@ The relevant modules are:
This module contains a manager that allows extensions to load themselves at
runtime.
* neutron.agent.l2.l2_extensions_manager:
* neutron.agent.l3.l3_extensions_manager:
* neutron.agent.l2.l2_agent_extensions_manager:
* neutron.agent.l3.l3_agent_extensions_manager:
Each of these modules passes core resource events to loaded extensions.
@ -93,10 +94,14 @@ This agent API object is part of neutron's public interface for third parties.
All changes to the interface will be managed in a backwards-compatible way.
At this time, on the L2 side, only the L2 Open vSwitch agent provides an agent
API object to extensions. See :doc:`L2 agent extensions <l2_agent_extensions>`.
API object to extensions. See :doc:`L2 agent extensions <l2_agent_extensions>`.
For L3, see :doc:`L3 agent extensions <l3_agent_extensions>`.
The relevant modules are:
* neutron.agent.l2.agent_extension_api
* neutron.agent.l3.agent_extension_api
* neutron.agent.agent_extension
* neutron.agent.agent_extensions_manager
* neutron.agent.l2.l2_agent_extension_api
* neutron.agent.l2.l2_agent_extensions_manager
* neutron.agent.l3.l3_agent_extension_api
* neutron.agent.l3.l3_agent_extensions_manager

1
doc/source/devref/index.rst
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@ -80,6 +80,7 @@ Neutron Internals
network_ip_availability
tag
provisioning_blocks
l3_agent_extensions
Testing
-------

2
doc/source/devref/l3_agent_extensions.rst
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@ -28,7 +28,7 @@ L3 agent extensions are part of a generalized L2/L3 extension framework. See
:doc:`agent extensions <agent_extensions>`.
L3 agent extension API
~~~~~~~~~~~~~~~~~~~~~~
----------------------
The L3 agent extension API object includes several methods that expose
router information to L3 agent extensions::

2
doc/source/devref/layer3.rst
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@ -214,6 +214,8 @@ Provider Networking
Neutron can also be configured to create `provider networks <http://docs.openstack.org/admin-guide/networking_adv-features.html#provider-networks>`_
.. include:: l3_agent_extensions.rst
Further Reading
---------------
* `Packet Pushers - Neutron Network Implementation on Linux <http://packetpushers.net/openstack-quantum-network-implementation-in-linux/>`_