docs: better docs, mv doxygen to sphinx

This patch refactors the VPP sphinx docs
in order to make it easier to consume
for external readers as well as VPP developers.

It also makes sphinx the single source
of documentation, which simplifies maintenance
and operation.

Most important updates are:

- reformat the existing documentation as rst
- split RELEASE.md and move it into separate rst files
- remove section 'events'
- remove section 'archive'
- remove section 'related projects'
- remove section 'feature by release'
- remove section 'Various links'
- make (Configuration reference, CLI docs,
  developer docs) top level items in the list
- move 'Use Cases' as part of 'About VPP'
- move 'Troubleshooting' as part of 'Getting Started'
- move test framework docs into 'Developer Documentation'
- add a 'Contributing' section for gerrit,
  docs and other contributer related infos
- deprecate doxygen and test-docs targets
- redirect the "make doxygen" target to "make docs"

Type: refactor

Change-Id: I552a5645d5b7964d547f99b1336e2ac24e7c209f
Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>

10 files changed, 0 insertions, 392 deletions

diff --git a/docs/gettingstarted/writingdocs/styleguide/index.rst b/docs/gettingstarted/writingdocs/styleguide/index.rst
deleted file mode 100644
index 240b3a26b19..00000000000
--- a/docs/gettingstarted/writingdocs/styleguide/index.rst
+++ /dev/null
@@ -1,31 +0,0 @@
-.. _styleguide:
-
-#############################
-reStructured Text Style Guide
-#############################
-
-Most of the these documents are written ins reStructured Text (rst). This chapter describes some of
-the Sphinx Markup Constructs used in these documents. The Sphinx style guide can be found at:
-`Sphinx Style Guide <http://documentation-style-guide-sphinx.readthedocs.io/en/latest/style-guide.html>`_
-For a more detailed list of Sphinx Markup Constructs please refer to:
-`Sphinx Markup Constructs <http://www.sphinx-doc.org/en/stable/markup/index.html>`_
-
-This document is also an example of a directory structure for a document that spans multiple pages.
-Notice we have the file **index.rst** and the then documents that are referenced in index.rst. The
-referenced documents are shown at the bottom of this page.
-
-A label is shown at the top of this page. Then the first construct describes a the document title
-**FD.io Style Guide**. Text usually follows under each title or heading.
-
-A **Table of Contents** structure is shown below. Using **toctree** in this way will show the headings
-in a nicely in the generated documents.
-
-.. toctree::
-   :maxdepth: 2
-
-   styleguide.rst
-   styleguide02.rst
-   styleguide02table.rst
-   styleguide03.rst
-   styleguide04.rst
-   styleguide05.rst
diff --git a/docs/gettingstarted/writingdocs/styleguide/iperf-vm.xml b/docs/gettingstarted/writingdocs/styleguide/iperf-vm.xml
deleted file mode 100644
index be354c5f977..00000000000
--- a/docs/gettingstarted/writingdocs/styleguide/iperf-vm.xml
+++ /dev/null
@@ -1,106 +0,0 @@
-<domain type='kvm' id='54'>
-  <name>iperf-server</name>
-  <memory unit='KiB'>1048576</memory>
-  <currentMemory unit='KiB'>1048576</currentMemory>
-  <memoryBacking>
-    <hugepages>
-      <page size='2048' unit='KiB'/>
-    </hugepages>
-  </memoryBacking>
-  <vcpu placement='static'>1</vcpu>
-  <resource>
-    <partition>/machine</partition>
-  </resource>
-  <os>
-    <type arch='x86_64' machine='pc-i440fx-xenial'>hvm</type>
-    <boot dev='hd'/>
-  </os>
-  <features>
-    <acpi/>
-    <apic/>
-  </features>
-  <cpu mode='host-model'>
-    <model fallback='allow'></model>
-    <numa>
-      <cell id='0' cpus='0' memory='262144' unit='KiB' memAccess='shared'/>
-    </numa>
-  </cpu>
-  <clock offset='utc'>
-    <timer name='rtc' tickpolicy='catchup'/>
-    <timer name='pit' tickpolicy='delay'/>
-    <timer name='hpet' present='no'/>
-  </clock>
-  <on_poweroff>destroy</on_poweroff>
-  <on_reboot>restart</on_reboot>
-  <on_crash>restart</on_crash>
-  <pm>
-    <suspend-to-mem enabled='no'/>
-    <suspend-to-disk enabled='no'/>
-  </pm>
-  <devices>
-    <emulator>/usr/bin/kvm</emulator>
-    <disk type='file' device='disk'>
-      <driver name='qemu' type='qcow2'/>
-      <source file='/tmp/xenial-mod.img'/>
-      <backingStore/>
-      <target dev='vda' bus='virtio'/>
-      <alias name='virtio-disk0'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
-    </disk>
-    <disk type='file' device='cdrom'>
-      <driver name='qemu' type='raw'/>
-      <source file='/scratch/jdenisco/sae/configs/cloud-config.iso'/>
-      <backingStore/>
-      <target dev='hda' bus='ide'/>
-      <readonly/>
-      <alias name='ide0-0-0'/>
-      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
-    </disk>
-    <controller type='usb' index='0' model='ich9-ehci1'>
-      <alias name='usb'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x7'/>
-    </controller>
-    <controller type='pci' index='0' model='pci-root'>
-      <alias name='pci.0'/>
-    </controller>
-    <controller type='ide' index='0'>
-      <alias name='ide'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
-    </controller>
-    <controller type='virtio-serial' index='0'>
-      <alias name='virtio-serial0'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
-    </controller>
-    <interface type='vhostuser'>
-      <mac address='52:54:00:4c:47:f2'/>
-      <source type='unix' path='/tmp//vm00.sock' mode='server'/>
-      <model type='virtio'/>
-      <alias name='net1'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
-    </interface>
-    <serial type='pty'>
-      <source path='/dev/pts/2'/>
-      <target port='0'/>
-      <alias name='serial0'/>
-    </serial>
-    <console type='pty' tty='/dev/pts/2'>
-      <source path='/dev/pts/2'/>
-      <target type='serial' port='0'/>
-      <alias name='serial0'/>
-    </console>
-    <input type='mouse' bus='ps2'/>
-    <input type='keyboard' bus='ps2'/>
-    <graphics type='vnc' port='5900' autoport='yes' listen='127.0.0.1'>
-      <listen type='address' address='127.0.0.1'/>
-    </graphics>
-    <memballoon model='virtio'>
-      <alias name='balloon0'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
-    </memballoon>
-  </devices>
-  <seclabel type='dynamic' model='apparmor' relabel='yes'>
-    <label>libvirt-2c4c9317-c7a5-4b37-b789-386ccda7348a</label>
-    <imagelabel>libvirt-2c4c9317-c7a5-4b37-b789-386ccda7348a</imagelabel>
-  </seclabel>
-</domain>
-
diff --git a/docs/gettingstarted/writingdocs/styleguide/rawhtml.rst b/docs/gettingstarted/writingdocs/styleguide/rawhtml.rst
deleted file mode 100644
index e94eb452312..00000000000
--- a/docs/gettingstarted/writingdocs/styleguide/rawhtml.rst
+++ /dev/null
@@ -1,10 +0,0 @@
-.. _rawhtml01:
-
-Raw HTML Example
-================
-
-This example shows how to include include a CSIT performance graph.
-
-.. raw:: html
-
-    <iframe src="https://docs.fd.io/csit/rls1801/report/_static/vpp/64B-1t1c-l2-sel2-ndrdisc.html" width="850" height="1000" frameborder="0">
diff --git a/docs/gettingstarted/writingdocs/styleguide/styleguide.rst b/docs/gettingstarted/writingdocs/styleguide/styleguide.rst
deleted file mode 100644
index 2312ea9c425..00000000000
--- a/docs/gettingstarted/writingdocs/styleguide/styleguide.rst
+++ /dev/null
@@ -1,20 +0,0 @@
-.. _styleguide01:
-
-*********
-Heading 1
-*********
-
-This is the top heading level. More levels are shown below.
-
-Heading 2
-=========
-
-Heading 3
----------
-
-Heading 4
-^^^^^^^^^
-
-Heading 5
-"""""""""
-
diff --git a/docs/gettingstarted/writingdocs/styleguide/styleguide02.rst b/docs/gettingstarted/writingdocs/styleguide/styleguide02.rst
deleted file mode 100644
index af92c93c316..00000000000
--- a/docs/gettingstarted/writingdocs/styleguide/styleguide02.rst
+++ /dev/null
@@ -1,83 +0,0 @@
-.. _styleguide02:
-
-*************************
-Bullets, Bold and Italics
-*************************
-
-Bold text can be show with **Bold Text**, Italics with *Italic text*. Bullets like so:
-
-* Bullet 1
-* Bullet 2
-
-#. Numbered Bullet 1
-#. Numbered Bullet 2
-
-*****
-Notes
-*****
-
-A note can be used to describe something not in the normal flow of the paragraph. This
-is an example of a note.
-
-.. note::
-
-    Using **git commit** after adding your files saves a "Snapshot" of them, so it's very hard
-    to lose your work if you *commit often*.
-
-***********
-Code Blocks
-***********
-
-This paragraph describes how to do **Console Commands**. When showing VPP commands it is recommended
-that the command be executed from the linux console as shown. The Highlighting in the final documents
-shows up nicely this way.
-
-.. code-block:: console
-
-    $ sudo bash
-    # vppctl show interface
-                  Name               Idx       State          Counter          Count     
-    TenGigabitEthernet86/0/0          1         up       rx packets               6569213
-                                                         rx bytes              9928352943
-                                                         tx packets                 50384
-                                                         tx bytes                 3329279
-    TenGigabitEthernet86/0/1          2        down      
-    VirtualEthernet0/0/0              3         up       rx packets                 50384
-                                                         rx bytes                 3329279
-                                                         tx packets               6569213
-                                                         tx bytes              9928352943
-                                                         drops                       1498
-    local0                            0        down      
-    #
-
-
-The **code-block** construct is also used for code samples. The following shows how to include a block of
-"C" code.
-
-.. code-block:: c
-
-   #include <vlib/unix/unix.h>
-   abf_policy_t *
-   abf_policy_get (u32 index)
-   {
-     return (pool_elt_at_index (abf_policy_pool, index));
-   }
-
-Diffs are generated in the final docs nicely with "::" at the end of the description like so::
-
-  diff --git a/src/vpp/vnet/main.c b/src/vpp/vnet/main.c
-  index 6e136e19..69189c93 100644
-  --- a/src/vpp/vnet/main.c
-  +++ b/src/vpp/vnet/main.c
-  @@ -18,6 +18,8 @@
-   #include <vlib/unix/unix.h>
-   #include <vnet/plugin/plugin.h>
-   #include <vnet/ethernet/ethernet.h>
-  +#include <vnet/ip/ip4_packet.h>
-  +#include <vnet/ip/format.h>
-   #include <vpp/app/version.h>
-   #include <vpp/api/vpe_msg_enum.h>
-   #include <limits.h>
-  @@ -400,6 +402,63 @@ VLIB_CLI_COMMAND (test_crash_command, static) = {
-
-   #endif
diff --git a/docs/gettingstarted/writingdocs/styleguide/styleguide02table.rst b/docs/gettingstarted/writingdocs/styleguide/styleguide02table.rst
deleted file mode 100644
index 742888be760..00000000000
--- a/docs/gettingstarted/writingdocs/styleguide/styleguide02table.rst
+++ /dev/null
@@ -1,76 +0,0 @@
-.. _styleguide02table:
-
-******
-Tables
-******
-
-There are two types of tables with different syntax, `Grid Tables <http://docutils.sourceforge.net/docs/ref/rst/restructuredtext.html#grid-tables>`_, and `Simple Tables <http://docutils.sourceforge.net/docs/ref/rst/restructuredtext.html#simple-tables>`_.
-
-Grid Tables
-___________
-
-`Grid Tables <http://docutils.sourceforge.net/docs/ref/rst/restructuredtext.html#grid-tables>`_ are described with a visual grid made up of the characters "-", "=", "|", and "+". The hyphen ("-") is used for horizontal lines (row separators). The equals sign ("=") may be used to separate optional header rows from the table body. The vertical bar ("|") is used for vertical lines (column separators). The plus sign ("+") is used for intersections of horizontal and vertical lines.
-
-Here is example code for a grid table in a *.rst* file:
-
-.. code-block:: console
-
-	+------------------------+------------+----------+----------+
-	| Header row, column 1   | Header 2   | Header 3 | Header 4 |
-	| (header rows optional) |            |          |          |
-	+========================+============+==========+==========+
-	| body row 1, column 1   | column 2   | column 3 | column 4 |
-	+------------------------+------------+----------+----------+
-	| body row 2             | Cells may span columns.          |
-	+------------------------+------------+---------------------+
-	| body row 3             | Cells may  | - Table cells       |
-	+------------------------+ span rows. | - contain           |
-	| body row 4             |            | - body elements.    |
-	+------------------------+------------+---------------------+
-	
-This example code generates a grid table that looks like this:
-
-+------------------------+------------+----------+----------+
-| Header row, column 1   | Header 2   | Header 3 | Header 4 |
-| (header rows optional) |            |          |          |
-+========================+============+==========+==========+
-| body row 1, column 1   | column 2   | column 3 | column 4 |
-+------------------------+------------+----------+----------+
-| body row 2             | Cells may span columns.          |
-+------------------------+------------+---------------------+
-| body row 3             | Cells may  | - Table cells       |
-+------------------------+ span rows. | - contain           |
-| body row 4             |            | - body elements.    |
-+------------------------+------------+---------------------+
-
-
-Simple Tables
-_____________
-
-`Simple tables <http://docutils.sourceforge.net/docs/ref/rst/restructuredtext.html#simple-tables>`_ are described with horizontal borders made up of "=" and "-" characters. The equals sign ("=") is used for top and bottom table borders, and to separate optional header rows from the table body. The hyphen ("-") is used to indicate column spans in a single row by underlining the joined columns, and may optionally be used to explicitly and/or visually separate rows. 
-
-Simple tables are "simpler" to create than grid tables, but are more limited.
-
-Here is example code for a simple table in a *.rst* file.
-
-.. code-block:: console
-	
-	=====  =====  =======
-	  A      B    A and B
-	=====  =====  =======
-	False  False  False
-	True   False  False
-	False  True   False
-	True   True   True
-	=====  =====  =======
-
-This example code generates a simple table that looks like this:
-
-=====  =====  =======
-  A      B    A and B
-=====  =====  =======
-False  False  False
-True   False  False
-False  True   False
-True   True   True
-=====  =====  =======
\ No newline at end of file
diff --git a/docs/gettingstarted/writingdocs/styleguide/styleguide03.rst b/docs/gettingstarted/writingdocs/styleguide/styleguide03.rst
deleted file mode 100644
index df35643b8a2..00000000000
--- a/docs/gettingstarted/writingdocs/styleguide/styleguide03.rst
+++ /dev/null
@@ -1,32 +0,0 @@
-.. _styleguide03:
-
-******************
-Labels, References
-******************
-
-A link or reference to other paragraphs within these documents can be done with
-following construct.
-
-In this example the reference points the label **showintcommand**. The label **styleguide03**
-is shown at the top of this page. A label used in this way must be above a heading or title.
-
-:ref:`showintcommand` command.
-
-**************
-External Links
-**************
-
-An external link is done with the following construct:
-
-`Sphinx Markup Constructs <http://www.sphinx-doc.org/en/stable/markup/index.html>`_
-
-******
-Images
-******
-
-Images should be placed in the directory docs/_images. They can then be referenced with
-following construct. This is the image created to show a pull request.
-
-.. figure:: /_images/examplePullReq.png
-   :scale: 35%
-   :align: center
diff --git a/docs/gettingstarted/writingdocs/styleguide/styleguide04.rst b/docs/gettingstarted/writingdocs/styleguide/styleguide04.rst
deleted file mode 100644
index 7dcea37d9d3..00000000000
--- a/docs/gettingstarted/writingdocs/styleguide/styleguide04.rst
+++ /dev/null
@@ -1,12 +0,0 @@
-.. _styleguide04:
-
-****************
-Including a file
-****************
-
-A complete file should be included with the following construct. It is recommended it be included with
-it's own .rst file describing the file included. This is an example of an xml file is included.
-
-.. toctree::
-
-  xmlexample.rst
diff --git a/docs/gettingstarted/writingdocs/styleguide/styleguide05.rst b/docs/gettingstarted/writingdocs/styleguide/styleguide05.rst
deleted file mode 100644
index 7ea977358c1..00000000000
--- a/docs/gettingstarted/writingdocs/styleguide/styleguide05.rst
+++ /dev/null
@@ -1,11 +0,0 @@
-.. _styleguide05:
-
-********
-Raw HTML
-********
-
-An html frame can be included with the following construct. It is recommended that references to raw html be included with it's own .rst file.
-
-.. toctree::
-
-  rawhtml.rst
diff --git a/docs/gettingstarted/writingdocs/styleguide/xmlexample.rst b/docs/gettingstarted/writingdocs/styleguide/xmlexample.rst
deleted file mode 100644
index 575a639579e..00000000000
--- a/docs/gettingstarted/writingdocs/styleguide/xmlexample.rst
+++ /dev/null
@@ -1,11 +0,0 @@
-.. _xmlexample:
-
-An XML File
-===========
-
-An example of an XML file.
-
-.. literalinclude:: iperf-vm.xml
-   :language: XML
-   :emphasize-lines: 42-49, 74-80
-