docs: Rewrite the what is VPP (first) section, also fix the build

[vpp.git] / docs / whatisvpp / index.rst

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+.. _whatisvpp:
+
+=================================
+The Vector Packet Processor (VPP)
+=================================
+
+This section describes some of the core concepts and features of FD.io VPP.
+
+To start with FD.io VPP uses a technique called Vector Packet Processing.
+This gives FD.io VPP a siginficant performance improvement over packet
+processing applications that use scalar processing. 
+
+Also, At the heart of Fd.io VPP's modular design is a 'Packet Processing Graph'.
+This makes FD.io VPP scalable and easily extensible.
+
+The FD.io software also includes a feature rich network stack. This includes
+a TCP host stack that utilizes VPP’s graph based forwarding model and vectorized
+packet processing.
+
+FD.io VPP is tested nightly for functionality and performance with the
+CSIT project.
+
+For more information on any of these features click on the links below or
+press next.
+
+.. toctree::
+   :maxdepth: 1
+
+   scalar-vs-vector-packet-processing.rst
+   extensible.rst
+   networkstack.rst
+   hoststack.rst
+   developer.rst
+   supported.rst
+   performance.rst
+
+Press next for more about Scalar/Vector Packet processing.