Global review of the NetReady requirements documentcolorado.1.0

This patchset enables a global review of the entire NetReady
requirements document. Changes to the document shall be pushed
as new patches to this patchset.

Change-Id: I7cc9290c9260aad5b687253b02d60efbc8a64bb2
Signed-off-by: Georg Kunz <georg.kunz@ericsson.com>

1 files changed, 52 insertions, 0 deletions

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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+Programmable Provisioning of Provider Networks
+----------------------------------------------
+Description
+~~~~~~~~~~~
+
+In a NFV environment the VNFMs (Virtual Network Function Manager) are consumers
+of the OpenStack IaaS API. They are often deployed without administrative rights
+on top of the NFVI platform. Furthermore, in the telco domain provider networks
+are often used. However, when a provider network is created administrative
+rights are needed what in the case of a VNFM without administrative rights
+requires additional manual configuration work.  It shall be possible to
+configure provider networks without administrative rights.  It should be
+possible to assign the capability to create provider networks to any roles.
+
+The following figure (:numref:`api-users`) shows the possible users of an
+OpenStack API and the relation of OpenStack and ETSI NFV components. Boxes with
+solid line are the ETSI NFV components while the boxes with broken line are the
+OpenStack components.
+
+.. figure:: images/api-users.png
+    :name:  api-users
+    :width: 50%
+
+Derived Requirements
+~~~~~~~~~~~~~~~~~~~~~
+   - Authorize the possibility of provider network creation based on policy
+   - There should be a new entry in :code:`policy.json` which controls the provider network creation
+   - Default policy of this new entry should be :code:`rule:admin_or_owner`.
+   - This policy should be respected by the Neutron API
+
+Northbound API / Workflow
++++++++++++++++++++++++++
+   - No changes in the API
+
+Data model objects
+++++++++++++++++++
+   - No changes in the data model
+
+Current implementation
+~~~~~~~~~~~~~~~~~~~~~~
+Only admin users can manage provider networks [OS-NETWORKING-GUIDE-ML2]_.
+
+Potential implementation
+~~~~~~~~~~~~~~~~~~~~~~~~
+   - Policy engine shall be able to handle a new provider network creation and
+     modification related policy.
+   - When a provider network is created or modified neutron should check the
+     authority with the policy engine instead of requesting administrative
+     rights.