Soft Patch Panel
 help / color / mirror / Atom feed
* [spp] [PATCH 0/3] add document of pipe PMD
@ 2020-04-12 23:00 Itsuro Oda
  2020-04-12 23:00 ` [spp] [PATCH 1/3] docs: add CLI for " Itsuro Oda
                   ` (4 more replies)
  0 siblings, 5 replies; 6+ messages in thread
From: Itsuro Oda @ 2020-04-12 23:00 UTC (permalink / raw)
  To: spp, ferruh.yigit, yasufum.o

This series of patches add document about pipe PMD.

Itsuro Oda (3):
  docs: add CLI for pipe PMD
  docs: add REST API for pipe PMD
  docs: add document of pipe PMD usecase

 docs/guides/api_ref/spp_primary.rst           |  56 +-
 docs/guides/commands/primary.rst              |  16 +
 .../images/usecases/pipe_usecase_pipe.svg     | 611 ++++++++++++
 .../images/usecases/pipe_usecase_sfc_nfv.svg  | 722 ++++++++++++++
 .../images/usecases/pipe_usecase_sfc_vf.svg   | 933 ++++++++++++++++++
 docs/guides/usecases/index.rst                |   1 +
 docs/guides/usecases/pipe_pmd.rst             | 133 +++
 7 files changed, 2464 insertions(+), 8 deletions(-)
 create mode 100644 docs/guides/images/usecases/pipe_usecase_pipe.svg
 create mode 100644 docs/guides/images/usecases/pipe_usecase_sfc_nfv.svg
 create mode 100644 docs/guides/images/usecases/pipe_usecase_sfc_vf.svg
 create mode 100644 docs/guides/usecases/pipe_pmd.rst

-- 
2.17.0


^ permalink raw reply	[flat|nested] 6+ messages in thread

* [spp] [PATCH 1/3] docs: add CLI for pipe PMD
  2020-04-12 23:00 [spp] [PATCH 0/3] add document of pipe PMD Itsuro Oda
@ 2020-04-12 23:00 ` Itsuro Oda
  2020-04-12 23:00 ` [spp] [PATCH 2/3] docs: add REST API " Itsuro Oda
                   ` (3 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: Itsuro Oda @ 2020-04-12 23:00 UTC (permalink / raw)
  To: spp, ferruh.yigit, yasufum.o

This patch adds description about CLI for pipe PMD.

Signed-off-by: Itsuro Oda <oda@valinux.co.jp>
---
 docs/guides/commands/primary.rst | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/docs/guides/commands/primary.rst b/docs/guides/commands/primary.rst
index cb510a6..7c55166 100644
--- a/docs/guides/commands/primary.rst
+++ b/docs/guides/commands/primary.rst
@@ -51,6 +51,8 @@ Show status fo ``spp_primary`` and forwarding statistics of each of ports.
     spp > pri; status
     - lcore_ids:
       - master: 0
+    - pipes:
+      - pipe:0 ring:0 ring:1
     - stats
       - physical ports:
           ID          rx          tx    tx_drop   rxq  txq mac_addr
@@ -78,6 +80,7 @@ also displayed.
       - ports:
         - phy:0
         - phy:1
+    - pipes:
     - stats
       - physical ports:
           ID          rx          tx    tx_drop  mac_addr
@@ -110,6 +113,7 @@ add
 
 Add a port with resource ID.
 
+If the type of a port is other than pipe, specify port only.
 For example, adding ``ring:0`` by
 
 .. code-block:: console
@@ -124,6 +128,18 @@ Or adding ``vhost:0`` by
     spp > pri; add vhost:0
     Add vhost:0.
 
+If the type of a port is pipe, specify a ring for rx and a ring
+for tx following a port. For example,
+
+.. code-block:: console
+
+    spp > pri; add pipe:0 ring:0 ring:1
+    Add pipe:0.
+
+.. note::
+
+   pipe is independent of the forwarder and can be added even if the
+   forwarder does not exist.
 
 .. _commands_primary_patch:
 
-- 
2.17.0


^ permalink raw reply	[flat|nested] 6+ messages in thread

* [spp] [PATCH 2/3] docs: add REST API for pipe PMD
  2020-04-12 23:00 [spp] [PATCH 0/3] add document of pipe PMD Itsuro Oda
  2020-04-12 23:00 ` [spp] [PATCH 1/3] docs: add CLI for " Itsuro Oda
@ 2020-04-12 23:00 ` Itsuro Oda
  2020-04-12 23:00 ` [spp] [PATCH 3/3] docs: add document of pipe PMD usecase Itsuro Oda
                   ` (2 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: Itsuro Oda @ 2020-04-12 23:00 UTC (permalink / raw)
  To: spp, ferruh.yigit, yasufum.o

This patch adds description about REST API for pipe PMD.

Signed-off-by: Itsuro Oda <oda@valinux.co.jp>
---
 docs/guides/api_ref/spp_primary.rst | 54 ++++++++++++++++++++++++-----
 1 file changed, 46 insertions(+), 8 deletions(-)

diff --git a/docs/guides/api_ref/spp_primary.rst b/docs/guides/api_ref/spp_primary.rst
index fbf8874..28596cb 100644
--- a/docs/guides/api_ref/spp_primary.rst
+++ b/docs/guides/api_ref/spp_primary.rst
@@ -41,6 +41,8 @@ Response
     +------------+-------+----------------------------------------+
     | ring_ports | array | Array of statistics of ring ports.     |
     +------------+-------+----------------------------------------+
+    | pipes      | array | Array of pipe ports.                   |
+    +------------+-------+----------------------------------------+
 
 Physical port object.
 
@@ -84,6 +86,23 @@ Ring port object.
     | tx_drop | integer | The total number of dropped packets of transferred. |
     +---------+---------+-----------------------------------------------------+
 
+Pipe port object.
+
+.. _table_spp_ctl_primary_status_pipe:
+
+.. table:: Attributes of pipe port of primary status.
+
+    +---------+---------+-----------------------------------------------------+
+    | Name    | Type    | Description                                         |
+    |         |         |                                                     |
+    +=========+=========+=====================================================+
+    | id      | integer | Port ID of the pipe port.                           |
+    +---------+---------+-----------------------------------------------------+
+    | rx      | integer | Port ID of the ring port for rx.                    |
+    +---------+---------+-----------------------------------------------------+
+    | tx      | integer | Port ID of the ring port for tx.                    |
+    +---------+---------+-----------------------------------------------------+
+
 
 Response example
 ~~~~~~~~~~~~~~~~
@@ -132,6 +151,13 @@ Response example
           "tx": 0,
           "tx_drop": 0
         }
+      ],
+      "pipes": [
+        {
+          "id": 0,
+          "rx": 0,
+          "tx": 1
+        }
       ]
     }
 
@@ -192,14 +218,18 @@ Request (body)
 
 .. table:: Request body params of ports of ``spp_primary``.
 
-    +--------+--------+--------------------------------------------------+
-    | Name   | Type   | Description                                      |
-    |        |        |                                                  |
-    +========+========+==================================================+
-    | action | string | ``add`` or ``del``.                              |
-    +--------+--------+--------------------------------------------------+
-    | port   | string | Resource UID of {port_type}:{port_id}.           |
-    +--------+--------+--------------------------------------------------+
+    +--------+--------+---------------------------------------------------------+
+    | Name   | Type   | Description                                             |
+    |        |        |                                                         |
+    +========+========+=========================================================+
+    | action | string | ``add`` or ``del``.                                     |
+    +--------+--------+---------------------------------------------------------+
+    | port   | string | Resource UID of {port_type}:{port_id}.                  |
+    +--------+--------+---------------------------------------------------------+
+    | rx     | string | Rx ring for pipe. It is necessary for adding pipe only. |
+    +--------+--------+---------------------------------------------------------+
+    | tx     | string | Tx ring for pipe. It is necessary for adding pipe only. |
+    +--------+--------+---------------------------------------------------------+
 
 
 Request example
@@ -211,6 +241,14 @@ Request example
       -d '{"action": "add", "port": "ring:0"}' \
       http://127.0.0.1:7777/v1/primary/ports
 
+For adding pipe.
+
+.. code-block:: console
+
+    $ curl -X PUT -H 'application/json' \
+      -d '{"action": "add", "port": "pipe:0", \
+      "rx": "ring:0", "tx": "ring:1"}' \
+      http://127.0.0.1:7777/v1/primary/ports
 
 Response
 ~~~~~~~~
-- 
2.17.0


^ permalink raw reply	[flat|nested] 6+ messages in thread

* [spp] [PATCH 3/3] docs: add document of pipe PMD usecase
  2020-04-12 23:00 [spp] [PATCH 0/3] add document of pipe PMD Itsuro Oda
  2020-04-12 23:00 ` [spp] [PATCH 1/3] docs: add CLI for " Itsuro Oda
  2020-04-12 23:00 ` [spp] [PATCH 2/3] docs: add REST API " Itsuro Oda
@ 2020-04-12 23:00 ` Itsuro Oda
  2020-04-30  2:38 ` [spp] (x-fn-spp-ml 671) [PATCH 0/3] add document of pipe PMD Hideyuki Yamashita
  2020-05-25  3:07 ` [spp] " Yasufumi Ogawa
  4 siblings, 0 replies; 6+ messages in thread
From: Itsuro Oda @ 2020-04-12 23:00 UTC (permalink / raw)
  To: spp, ferruh.yigit, yasufum.o

This patch adds a document of usecase of pipe PMD.

Signed-off-by: Itsuro Oda <oda@valinux.co.jp>
---
 docs/guides/api_ref/spp_primary.rst           |   2 +
 .../images/usecases/pipe_usecase_pipe.svg     | 611 ++++++++++++
 .../images/usecases/pipe_usecase_sfc_nfv.svg  | 722 ++++++++++++++
 .../images/usecases/pipe_usecase_sfc_vf.svg   | 933 ++++++++++++++++++
 docs/guides/usecases/index.rst                |   1 +
 docs/guides/usecases/pipe_pmd.rst             | 133 +++
 6 files changed, 2402 insertions(+)
 create mode 100644 docs/guides/images/usecases/pipe_usecase_pipe.svg
 create mode 100644 docs/guides/images/usecases/pipe_usecase_sfc_nfv.svg
 create mode 100644 docs/guides/images/usecases/pipe_usecase_sfc_vf.svg
 create mode 100644 docs/guides/usecases/pipe_pmd.rst

diff --git a/docs/guides/api_ref/spp_primary.rst b/docs/guides/api_ref/spp_primary.rst
index 28596cb..f22a1cc 100644
--- a/docs/guides/api_ref/spp_primary.rst
+++ b/docs/guides/api_ref/spp_primary.rst
@@ -202,6 +202,8 @@ Action is ``stop``.
     spp > pri; stop
 
 
+.. _api_spp_ctl_spp_primary_put_ports:
+
 PUT /v1/primary/ports
 ---------------------
 
diff --git a/docs/guides/images/usecases/pipe_usecase_pipe.svg b/docs/guides/images/usecases/pipe_usecase_pipe.svg
new file mode 100644
index 0000000..35e89c5
--- /dev/null
+++ b/docs/guides/images/usecases/pipe_usecase_pipe.svg
@@ -0,0 +1,611 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="152.58044mm"
+   height="117.89329mm"
+   viewBox="0 0 540.63939 417.73222"
+   id="svg2"
+   version="1.1"
+   inkscape:version="0.92.4 (5da689c313, 2019-01-14)"
+   sodipodi:docname="pipe_usecase_pipe.svg">
+  <defs
+     id="defs4">
+    <marker
+       inkscape:stockid="Arrow1Lstart"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="Arrow1Lstart"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path6666"
+         d="M 0,0 5,-5 -12.5,0 5,5 Z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000003pt;stroke-opacity:1"
+         transform="matrix(0.8,0,0,0.8,10,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="marker6505"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path6503"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker4627"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend"
+       inkscape:collect="always">
+      <path
+         inkscape:connector-curvature="0"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path4629" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="marker4479"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path4481"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="marker1450"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path1448"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="Arrow2Lend"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path4411"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5907"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5909"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5813"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5815"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5725"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5727"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5643"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5645"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5567"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5569"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5421"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5423"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5137"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5139"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5091"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5093"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5051"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5053"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5017"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5019"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker4989"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path4991"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow1Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="Arrow1Lend"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path4462"
+         d="M 0,0 5,-5 -12.5,0 5,5 Z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000003pt;stroke-opacity:1"
+         transform="matrix(-0.8,0,0,-0.8,-10,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5567-3"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5569-6"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="Arrow2Lend-7"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path4411-5"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker4627-1"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         inkscape:connector-curvature="0"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path4629-2" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5091-0"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5093-6"
+         inkscape:connector-curvature="0" />
+    </marker>
+  </defs>
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="0.7"
+     inkscape:cx="421.5718"
+     inkscape:cy="86.005928"
+     inkscape:document-units="px"
+     inkscape:current-layer="layer5"
+     showgrid="false"
+     inkscape:window-width="1643"
+     inkscape:window-height="854"
+     inkscape:window-x="167"
+     inkscape:window-y="74"
+     inkscape:window-maximized="0"
+     units="mm"
+     width="230mm"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0"
+     inkscape:snap-global="true"
+     inkscape:snap-bbox="true"
+     inkscape:snap-nodes="true"
+     inkscape:snap-others="false"
+     inkscape:bbox-paths="true"
+     inkscape:snap-intersection-paths="false"
+     inkscape:object-nodes="false"
+     inkscape:object-paths="true"
+     inkscape:lockguides="true" />
+  <metadata
+     id="metadata7">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Host"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(-10.358874,-474.54075)"
+     style="display:inline">
+    <rect
+       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:1.48551643;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4136"
+       width="539.15393"
+       height="380.94302"
+       x="11.101632"
+       y="475.28351" />
+  </g>
+  <g
+     inkscape:groupmode="layer"
+     id="layer7"
+     inkscape:label="Host-Resource"
+     style="display:inline"
+     transform="translate(-10.358874,-474.54075)">
+    <ellipse
+       style="opacity:1;fill:#cbffce;fill-opacity:1;stroke:#000000;stroke-width:0.78720933;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4297"
+       cx="273.89044"
+       cy="724.98724"
+       rx="39.606403"
+       ry="19.606396" />
+    <ellipse
+       style="opacity:1;fill:#cbffce;fill-opacity:1;stroke:#000000;stroke-width:0.74310595;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4301"
+       cx="273.89044"
+       cy="666.16315"
+       rx="39.628456"
+       ry="18.699877" />
+  </g>
+  <g
+     inkscape:groupmode="layer"
+     id="layer3"
+     inkscape:label="Container"
+     style="display:inline"
+     transform="translate(-10.358874,-474.54075)">
+    <rect
+       style="opacity:1;fill:#ffff6e;fill-opacity:1;stroke:#000000;stroke-width:0.88022333;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4391"
+       width="89.119804"
+       height="29.11978"
+       x="119.70796"
+       y="599.95844" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:1.03222072px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 311.77952,662.6264 44.12544,-0.80843"
+       id="path7074"
+       inkscape:connector-curvature="0" />
+  </g>
+  <g
+     inkscape:groupmode="layer"
+     id="layer5"
+     inkscape:label="App"
+     transform="translate(-10.358874,-474.54075)"
+     style="display:inline">
+    <rect
+       style="opacity:1;fill:#ffffd3;fill-opacity:1;stroke:#000000;stroke-width:0.9541887;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4223"
+       width="163.33151"
+       height="39.045811"
+       x="87.209244"
+       y="562.58478"
+       ry="19.522905" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:1.10747123px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker4627)"
+       d="M 140.0893,722.99672 V 633.28751"
+       id="path162"
+       inkscape:connector-curvature="0" />
+    <rect
+       style="display:inline;opacity:1;fill:#ffff6e;fill-opacity:1;stroke:#000000;stroke-width:0.88022333;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4391-6"
+       width="89.119804"
+       height="29.11978"
+       x="337.61874"
+       y="599.95844" />
+    <rect
+       style="display:inline;opacity:1;fill:#ffffd3;fill-opacity:1;stroke:#000000;stroke-width:0.9541887;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4223-6"
+       width="163.3315"
+       height="39.045807"
+       x="301.37003"
+       y="562.58484"
+       ry="19.522903" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="384.5358"
+       y="588.19415"
+       id="text4225-6"><tspan
+         sodipodi:role="line"
+         id="tspan4227-0"
+         x="384.5358"
+         y="588.19415"
+         style="font-size:22.50000381px;line-height:1.25;stroke-width:0.99999994px">app 2</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="381.96436"
+       y="620.48944"
+       id="text4407-8"><tspan
+         sodipodi:role="line"
+         x="381.96436"
+         y="620.48944"
+         id="tspan4411-7"
+         style="font-size:22.50000381px;line-height:1.25;stroke-width:0.99999994px">pipe:1</tspan></text>
+    <flowRoot
+       xml:space="preserve"
+       id="flowRoot6464"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none"><flowRegion
+         id="flowRegion6466"><rect
+           id="rect6468"
+           width="187.14285"
+           height="97.14286"
+           x="722.85712"
+           y="131.09111" /></flowRegion><flowPara
+         id="flowPara6470" /></flowRoot>    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 193.82777,631.047 0.36869,31.583"
+       id="path6472"
+       inkscape:connector-curvature="0" />
+    <path
+       style="display:inline;fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-start:url(#Arrow1Lstart)"
+       d="m 355.53003,630.23137 0.36869,31.583"
+       id="path6472-0"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 194.19646,662.63 41.20492,0.09"
+       id="path1432"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.80901474px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 140.2696,723.5229 c 93.75001,0 93.75001,0 93.75001,0"
+       id="path8467"
+       inkscape:connector-curvature="0" />
+    <path
+       style="display:inline;fill:none;stroke:#000000;stroke-width:0.80901468px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 313.03748,722.98723 c 93.75001,0 93.75001,0 93.75001,0"
+       id="path8467-2"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="M 406.78749,722.98723 V 629.07821"
+       id="path8486"
+       inkscape:connector-curvature="0" />
+  </g>
+  <g
+     inkscape:groupmode="layer"
+     id="layer4"
+     inkscape:label="Label"
+     style="display:inline"
+     transform="translate(-10.358874,-474.54075)">
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="170.37502"
+       y="588.05133"
+       id="text4225"><tspan
+         sodipodi:role="line"
+         id="tspan4227"
+         x="170.37502"
+         y="588.05133"
+         style="font-size:22.50000572px;line-height:1.25">app 1</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="45.571438"
+       y="506.36221"
+       id="text4327"><tspan
+         sodipodi:role="line"
+         id="tspan4329"
+         x="45.571438"
+         y="506.36221"
+         style="font-size:22.50000572px;line-height:1.25">host</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="273.62674"
+       y="730.41583"
+       id="text4351"><tspan
+         sodipodi:role="line"
+         id="tspan4353"
+         x="273.62674"
+         y="730.41583"
+         style="font-size:22.50000572px;line-height:1.25">ring:0</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="274.08267"
+       y="671.30603"
+       id="text4359"><tspan
+         sodipodi:role="line"
+         id="tspan4361"
+         x="274.08267"
+         y="671.30603"
+         style="font-size:22.50000572px;line-height:1.25">ring:1</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="167.80359"
+       y="620.5993"
+       id="text4407"><tspan
+         sodipodi:role="line"
+         x="167.80359"
+         y="620.5993"
+         id="tspan4411"
+         style="font-size:22.50000572px;line-height:1.25">pipe:0</tspan></text>
+  </g>
+</svg>
diff --git a/docs/guides/images/usecases/pipe_usecase_sfc_nfv.svg b/docs/guides/images/usecases/pipe_usecase_sfc_nfv.svg
new file mode 100644
index 0000000..7b59c40
--- /dev/null
+++ b/docs/guides/images/usecases/pipe_usecase_sfc_nfv.svg
@@ -0,0 +1,722 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="152.58044mm"
+   height="117.89329mm"
+   viewBox="0 0 540.63939 417.73222"
+   id="svg2"
+   version="1.1"
+   inkscape:version="0.92.4 (5da689c313, 2019-01-14)"
+   sodipodi:docname="pipe_usecase_nfv.svg">
+  <defs
+     id="defs4">
+    <marker
+       inkscape:stockid="Arrow1Lstart"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="Arrow1Lstart"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path6666"
+         d="M 0,0 5,-5 -12.5,0 5,5 Z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000003pt;stroke-opacity:1"
+         transform="matrix(0.8,0,0,0.8,10,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="marker6505"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path6503"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="marker4479"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path4481"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="marker1450"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path1448"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="Arrow2Lend"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path4411"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5907"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5909"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5813"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5815"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5725"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5727"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5643"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5645"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5567"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5569"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5421"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5423"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5137"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5139"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5091"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5093"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5051"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5053"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5017"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5019"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker4989"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path4991"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow1Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="Arrow1Lend"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path4462"
+         d="M 0,0 5,-5 -12.5,0 5,5 Z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000003pt;stroke-opacity:1"
+         transform="matrix(-0.8,0,0,-0.8,-10,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5567-3"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5569-6"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="Arrow2Lend-7"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path4411-5"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker4627-1"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         inkscape:connector-curvature="0"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path4629-2" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5091-0"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5093-6"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="marker6505-7"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path6503-8"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+  </defs>
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="0.7"
+     inkscape:cx="183.00037"
+     inkscape:cy="86.005928"
+     inkscape:document-units="px"
+     inkscape:current-layer="layer5"
+     showgrid="false"
+     inkscape:window-width="1643"
+     inkscape:window-height="854"
+     inkscape:window-x="167"
+     inkscape:window-y="74"
+     inkscape:window-maximized="0"
+     units="mm"
+     width="230mm"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0"
+     inkscape:snap-global="true"
+     inkscape:snap-bbox="true"
+     inkscape:snap-nodes="true"
+     inkscape:snap-others="false"
+     inkscape:bbox-paths="true"
+     inkscape:snap-intersection-paths="false"
+     inkscape:object-nodes="false"
+     inkscape:object-paths="true"
+     inkscape:lockguides="true" />
+  <metadata
+     id="metadata7">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Host"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(-10.358874,-474.54075)"
+     style="display:inline">
+    <rect
+       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:1.48551643;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4136"
+       width="539.15393"
+       height="380.94302"
+       x="11.101632"
+       y="475.28351" />
+    <rect
+       style="opacity:1;fill:#ffff6e;fill-opacity:1;stroke:#000000;stroke-width:1.07469606;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4142"
+       width="73.925301"
+       height="33.925304"
+       x="103.25159"
+       y="821.16742" />
+    <rect
+       style="opacity:1;fill:#ffff6e;fill-opacity:1;stroke:#000000;stroke-width:0.81819206;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4144"
+       width="74.181808"
+       height="34.181808"
+       x="366.81973"
+       y="820.46771" />
+  </g>
+  <g
+     inkscape:groupmode="layer"
+     id="layer7"
+     inkscape:label="Host-Resource"
+     style="display:inline"
+     transform="translate(-10.358874,-474.54075)">
+    <ellipse
+       style="opacity:1;fill:#cbffce;fill-opacity:1;stroke:#000000;stroke-width:0.78720933;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4297"
+       cx="140.83926"
+       cy="687.11334"
+       rx="39.606403"
+       ry="19.606396" />
+    <ellipse
+       style="opacity:1;fill:#cbffce;fill-opacity:1;stroke:#000000;stroke-width:0.74310595;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4301"
+       cx="274.35229"
+       cy="666.16315"
+       rx="39.628456"
+       ry="18.699877" />
+  </g>
+  <g
+     inkscape:groupmode="layer"
+     id="layer3"
+     inkscape:label="Container"
+     style="display:inline"
+     transform="translate(-10.358874,-474.54075)">
+    <rect
+       style="opacity:1;fill:#ffff6e;fill-opacity:1;stroke:#000000;stroke-width:0.88022333;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4391"
+       width="89.119804"
+       height="29.11978"
+       x="119.70796"
+       y="599.95844" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:1.03222072px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 311.77952,665.01753 44.12544,-0.80843"
+       id="path7074"
+       inkscape:connector-curvature="0" />
+  </g>
+  <g
+     inkscape:groupmode="layer"
+     id="layer5"
+     inkscape:label="App"
+     transform="translate(-10.358874,-474.54075)"
+     style="display:inline">
+    <rect
+       style="opacity:1;fill:#ffffd3;fill-opacity:1;stroke:#000000;stroke-width:0.9541887;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4223"
+       width="163.33151"
+       height="39.045811"
+       x="87.209244"
+       y="562.58478"
+       ry="19.522905" />
+    <rect
+       style="opacity:1;fill:#ffffd3;fill-opacity:1;stroke:#000000;stroke-width:0.89193338;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4231"
+       width="99.108093"
+       height="34.108074"
+       x="94.78524"
+       y="739.22333"
+       ry="17.054037" />
+    <path
+       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000012;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-end:url(#marker5091)"
+       d="m 138.92853,892.27291 v -35.7143"
+       id="path4427"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker5907)"
+       d="m 404.3392,856.55861 v 32.8572"
+       id="path4429"
+       inkscape:connector-curvature="0" />
+    <ellipse
+       style="display:inline;opacity:1;fill:#cbffce;fill-opacity:1;stroke:#000000;stroke-width:0.78720933;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4297-2"
+       cx="407.23218"
+       cy="687.11334"
+       rx="39.6064"
+       ry="19.606394" />
+    <rect
+       style="display:inline;opacity:1;fill:#ffff6e;fill-opacity:1;stroke:#000000;stroke-width:0.88022333;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4391-6"
+       width="89.119804"
+       height="29.11978"
+       x="337.61874"
+       y="599.95844" />
+    <rect
+       style="display:inline;opacity:1;fill:#ffffd3;fill-opacity:1;stroke:#000000;stroke-width:0.9541887;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4223-6"
+       width="163.3315"
+       height="39.045807"
+       x="301.37003"
+       y="562.58484"
+       ry="19.522903" />
+    <rect
+       style="display:inline;opacity:1;fill:#ffffd3;fill-opacity:1;stroke:#000000;stroke-width:0.89193332;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4231-8"
+       width="99.108093"
+       height="34.10807"
+       x="361.17816"
+       y="739.22333"
+       ry="17.054035" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="410.6608"
+       y="762.61646"
+       id="text4205-4"><tspan
+         sodipodi:role="line"
+         id="tspan4207-3"
+         x="410.6608"
+         y="762.61646"
+         style="font-size:22.50000381px;line-height:1.25;stroke-width:0.99999994px">spp_nfv</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="384.5358"
+       y="588.19415"
+       id="text4225-6"><tspan
+         sodipodi:role="line"
+         id="tspan4227-0"
+         x="384.5358"
+         y="588.19415"
+         style="font-size:22.50000381px;line-height:1.25;stroke-width:0.99999994px">app 2</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="404.01791"
+       y="693.13934"
+       id="text4351-3"><tspan
+         sodipodi:role="line"
+         id="tspan4353-6"
+         x="404.01791"
+         y="693.13934"
+         style="font-size:22.50000381px;line-height:1.25;stroke-width:0.99999994px">ring:2</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="381.96436"
+       y="620.48944"
+       id="text4407-8"><tspan
+         sodipodi:role="line"
+         x="381.96436"
+         y="620.48944"
+         id="tspan4411-7"
+         style="font-size:22.50000381px;line-height:1.25;stroke-width:0.99999994px">pipe:1</tspan></text>
+    <flowRoot
+       xml:space="preserve"
+       id="flowRoot6464"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none"><flowRegion
+         id="flowRegion6466"><rect
+           id="rect6468"
+           width="187.14285"
+           height="97.14286"
+           x="722.85712"
+           y="131.09111" /></flowRegion><flowPara
+         id="flowPara6470" /></flowRoot>    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 193.82777,631.047 0.36869,31.583"
+       id="path6472"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:1.04158545px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 194.19646,664.61331 h 42.32143"
+       id="path6474"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="M 405.2119,820.46771 V 773.37155"
+       id="path1192"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="M 138.89137,821.16742 V 773.3314"
+       id="path9486"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker6505)"
+       d="M 138.89137,667.52815 V 629.07821"
+       id="path9490"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="M 137.59104,739.22333 V 706.65369"
+       id="path9492"
+       inkscape:connector-curvature="0" />
+    <path
+       style="display:inline;fill:none;stroke:#000000;stroke-width:0.88882339px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker6505-7)"
+       d="M 355.91115,664.51361 V 629.9528"
+       id="path9490-5"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="M 405.2119,739.22333 V 706.69984"
+       id="path10027"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="M 405.2119,667.52547 V 629.07821"
+       id="path10029"
+       inkscape:connector-curvature="0" />
+  </g>
+  <g
+     inkscape:groupmode="layer"
+     id="layer4"
+     inkscape:label="Label"
+     style="display:inline"
+     transform="translate(-10.358874,-474.54075)">
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="144.26787"
+       y="762.61646"
+       id="text4205"><tspan
+         sodipodi:role="line"
+         id="tspan4207"
+         x="144.26787"
+         y="762.61646"
+         style="font-size:22.50000572px;line-height:1.25">spp_nfv</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="170.37502"
+       y="588.05133"
+       id="text4225"><tspan
+         sodipodi:role="line"
+         id="tspan4227"
+         x="170.37502"
+         y="588.05133"
+         style="font-size:22.50000572px;line-height:1.25">app 1</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="140.35712"
+       y="841.98718"
+       id="text4319"><tspan
+         sodipodi:role="line"
+         id="tspan4321"
+         x="140.35712"
+         y="841.98718"
+         style="font-size:22.50000572px;line-height:1.25">phy:0</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="403.76785"
+       y="842.27289"
+       id="text4323"><tspan
+         sodipodi:role="line"
+         id="tspan4325"
+         x="403.76785"
+         y="842.27289"
+         style="font-size:22.50000572px;line-height:1.25">phy:1</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="45.571438"
+       y="506.36221"
+       id="text4327"><tspan
+         sodipodi:role="line"
+         id="tspan4329"
+         x="45.571438"
+         y="506.36221"
+         style="font-size:22.50000572px;line-height:1.25">host</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="137.625"
+       y="693.13385"
+       id="text4351"><tspan
+         sodipodi:role="line"
+         id="tspan4353"
+         x="137.625"
+         y="693.13385"
+         style="font-size:22.50000572px;line-height:1.25">ring:0</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="274.56659"
+       y="671.30603"
+       id="text4359"><tspan
+         sodipodi:role="line"
+         id="tspan4361"
+         x="274.56659"
+         y="671.30603"
+         style="font-size:22.50000572px;line-height:1.25">ring:1</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="167.80359"
+       y="620.5993"
+       id="text4407"><tspan
+         sodipodi:role="line"
+         x="167.80359"
+         y="620.5993"
+         id="tspan4411"
+         style="font-size:22.50000572px;line-height:1.25">pipe:0</tspan></text>
+  </g>
+</svg>
diff --git a/docs/guides/images/usecases/pipe_usecase_sfc_vf.svg b/docs/guides/images/usecases/pipe_usecase_sfc_vf.svg
new file mode 100644
index 0000000..dc92bad
--- /dev/null
+++ b/docs/guides/images/usecases/pipe_usecase_sfc_vf.svg
@@ -0,0 +1,933 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="205.11914mm"
+   height="117.89329mm"
+   viewBox="0 0 726.80013 417.73222"
+   id="svg2"
+   version="1.1"
+   inkscape:version="0.92.4 (5da689c313, 2019-01-14)"
+   sodipodi:docname="pipe_usecase_sfc_vf.svg">
+  <defs
+     id="defs4">
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker11702"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         inkscape:connector-curvature="0"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path11700" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="marker11536"
+       style="overflow:visible"
+       inkscape:isstock="true"
+       inkscape:collect="always">
+      <path
+         id="path11534"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker4047"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend"
+       inkscape:collect="always">
+      <path
+         inkscape:connector-curvature="0"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path4045" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker3977"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         inkscape:connector-curvature="0"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path3975" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow1Lstart"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="marker2797"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path2534"
+         d="M 0,0 5,-5 -12.5,0 5,5 Z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000003pt;stroke-opacity:1"
+         transform="matrix(0.8,0,0,0.8,10,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow1Lstart"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="Arrow1Lstart"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path6666"
+         d="M 0,0 5,-5 -12.5,0 5,5 Z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000003pt;stroke-opacity:1"
+         transform="matrix(0.8,0,0,0.8,10,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="marker4479"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path4481"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="marker1450"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path1448"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="Arrow2Lend"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path4411"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5907"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5909"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5813"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5815"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5725"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5727"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5643"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5645"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5567"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5569"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5421"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5423"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5137"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5139"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5091"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5093"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5051"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5053"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5017"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5019"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker4989"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path4991"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow1Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="Arrow1Lend"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path4462"
+         d="M 0,0 5,-5 -12.5,0 5,5 Z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000003pt;stroke-opacity:1"
+         transform="matrix(-0.8,0,0,-0.8,-10,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5567-3"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5569-6"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:stockid="Arrow2Lend"
+       orient="auto"
+       refY="0"
+       refX="0"
+       id="Arrow2Lend-7"
+       style="overflow:visible"
+       inkscape:isstock="true">
+      <path
+         id="path4411-5"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         inkscape:connector-curvature="0" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker4627-1"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         inkscape:connector-curvature="0"
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path4629-2" />
+    </marker>
+    <marker
+       inkscape:isstock="true"
+       style="overflow:visible"
+       id="marker5091-0"
+       refX="0"
+       refY="0"
+       orient="auto"
+       inkscape:stockid="Arrow2Lend">
+      <path
+         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+         id="path5093-6"
+         inkscape:connector-curvature="0" />
+    </marker>
+  </defs>
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="0.7"
+     inkscape:cx="326.22118"
+     inkscape:cy="86.005913"
+     inkscape:document-units="px"
+     inkscape:current-layer="layer5"
+     showgrid="false"
+     inkscape:window-width="1643"
+     inkscape:window-height="854"
+     inkscape:window-x="167"
+     inkscape:window-y="74"
+     inkscape:window-maximized="0"
+     units="mm"
+     width="230mm"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0"
+     inkscape:snap-global="true"
+     inkscape:snap-bbox="true"
+     inkscape:snap-nodes="true"
+     inkscape:snap-others="false"
+     inkscape:bbox-paths="true"
+     inkscape:snap-intersection-paths="false"
+     inkscape:object-nodes="false"
+     inkscape:object-paths="true"
+     inkscape:lockguides="true" />
+  <metadata
+     id="metadata7">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Host"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(-10.358874,-474.54074)"
+     style="display:inline">
+    <rect
+       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:1.72217977;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4136"
+       width="725.078"
+       height="380.70636"
+       x="11.219964"
+       y="475.40182" />
+    <rect
+       style="opacity:1;fill:#ffff6e;fill-opacity:1;stroke:#000000;stroke-width:1.07469606;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4142"
+       width="73.925301"
+       height="33.925304"
+       x="92.537308"
+       y="821.16742" />
+    <rect
+       style="opacity:1;fill:#ffff6e;fill-opacity:1;stroke:#000000;stroke-width:0.81819206;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4144"
+       width="74.181808"
+       height="34.181808"
+       x="613.81146"
+       y="820.46771" />
+    <rect
+       style="display:inline;opacity:1;fill:#ffff6e;fill-opacity:1;stroke:#000000;stroke-width:0.88022333;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4391-6-6"
+       width="89.119804"
+       height="29.11978"
+       x="568.15619"
+       y="581.09241" />
+    <rect
+       style="display:inline;opacity:1;fill:#ffffd3;fill-opacity:1;stroke:#000000;stroke-width:0.9541887;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4223-6-7"
+       width="163.33148"
+       height="39.045803"
+       x="531.90747"
+       y="543.71875"
+       ry="19.522902" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="615.07324"
+       y="569.32806"
+       id="text4225-6-5"><tspan
+         sodipodi:role="line"
+         id="tspan4227-0-0"
+         x="615.07324"
+         y="569.32806"
+         style="font-size:22.50000191px;line-height:1.25;stroke-width:0.99999994px">app 3</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="612.50177"
+       y="601.73871"
+       id="text4407-8-2"><tspan
+         sodipodi:role="line"
+         x="612.50177"
+         y="601.73871"
+         id="tspan4411-7-9"
+         style="font-size:22.50000191px;line-height:1.25;stroke-width:0.99999994px">pipe:2</tspan></text>
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="M 425.5375,610.21219 V 643.4811"
+       id="path11484"
+       inkscape:connector-curvature="0" />
+  </g>
+  <g
+     inkscape:groupmode="layer"
+     id="layer7"
+     inkscape:label="Host-Resource"
+     style="display:inline"
+     transform="translate(-10.358874,-474.54074)">
+    <ellipse
+       style="opacity:1;fill:#cbffce;fill-opacity:1;stroke:#000000;stroke-width:0.78720933;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4297"
+       cx="129.49995"
+       cy="661.97827"
+       rx="39.606403"
+       ry="19.606396" />
+    <ellipse
+       style="opacity:1;fill:#cbffce;fill-opacity:1;stroke:#000000;stroke-width:0.74310595;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4301"
+       cx="212.74515"
+       cy="661.97827"
+       rx="39.628456"
+       ry="18.699877" />
+  </g>
+  <g
+     inkscape:groupmode="layer"
+     id="layer3"
+     inkscape:label="Container"
+     style="display:inline"
+     transform="translate(-10.358874,-474.54074)">
+    <rect
+       style="opacity:1;fill:#ffff6e;fill-opacity:1;stroke:#000000;stroke-width:0.88022333;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4391"
+       width="89.119804"
+       height="29.11978"
+       x="126.40439"
+       y="581.09241" />
+  </g>
+  <g
+     inkscape:groupmode="layer"
+     id="layer5"
+     inkscape:label="App"
+     transform="translate(-10.358874,-474.54074)"
+     style="display:inline">
+    <rect
+       style="opacity:1;fill:#ffffd3;fill-opacity:1;stroke:#000000;stroke-width:0.9541887;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4223"
+       width="163.33151"
+       height="39.045811"
+       x="93.90567"
+       y="543.71875"
+       ry="19.522905" />
+    <rect
+       style="opacity:1;fill:#ffffd3;fill-opacity:1;stroke:#000000;stroke-width:1.65822613;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4231"
+       width="652.50153"
+       height="78.572845"
+       x="65.186798"
+       y="714.94183"
+       ry="39.286423" />
+    <path
+       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000012;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-end:url(#marker5091)"
+       d="m 129.51757,892.27291 v -35.7143"
+       id="path4427"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker5907)"
+       d="m 653.88523,856.55861 v 32.8572"
+       id="path4429"
+       inkscape:connector-curvature="0" />
+    <rect
+       style="display:inline;opacity:1;fill:#ffff6e;fill-opacity:1;stroke:#000000;stroke-width:0.88022333;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4391-6"
+       width="89.119804"
+       height="29.11978"
+       x="344.31519"
+       y="581.09241" />
+    <rect
+       style="display:inline;opacity:1;fill:#ffffd3;fill-opacity:1;stroke:#000000;stroke-width:0.9541887;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="rect4223-6"
+       width="163.3315"
+       height="39.045807"
+       x="308.06647"
+       y="543.71875"
+       ry="19.522903" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="391.23224"
+       y="569.32806"
+       id="text4225-6"><tspan
+         sodipodi:role="line"
+         id="tspan4227-0"
+         x="391.23224"
+         y="569.32806"
+         style="font-size:22.50000381px;line-height:1.25;stroke-width:0.99999994px">app 2</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="388.6608"
+       y="601.62335"
+       id="text4407-8"><tspan
+         sodipodi:role="line"
+         x="388.6608"
+         y="601.62335"
+         id="tspan4411-7"
+         style="font-size:22.50000381px;line-height:1.25;stroke-width:0.99999994px">pipe:1</tspan></text>
+    <flowRoot
+       xml:space="preserve"
+       id="flowRoot6464"
+       style="font-style:normal;font-weight:normal;font-size:40px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none"><flowRegion
+         id="flowRegion6466"><rect
+           id="rect6468"
+           width="187.14285"
+           height="97.14286"
+           x="722.85712"
+           y="131.09111" /></flowRegion><flowPara
+         id="flowPara6470" /></flowRoot>    <ellipse
+       style="display:inline;opacity:1;fill:#cbffce;fill-opacity:1;stroke:#000000;stroke-width:0.78720933;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4297-6"
+       cx="347.39706"
+       cy="661.97827"
+       rx="39.6064"
+       ry="19.606394" />
+    <ellipse
+       style="display:inline;opacity:1;fill:#cbffce;fill-opacity:1;stroke:#000000;stroke-width:0.74310595;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4301-3"
+       cx="431.35654"
+       cy="661.97827"
+       rx="39.628456"
+       ry="18.699875" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="344.1828"
+       y="668.00427"
+       id="text4351-7"><tspan
+         sodipodi:role="line"
+         id="tspan4353-4"
+         x="344.1828"
+         y="668.00427"
+         style="font-size:22.50000381px;line-height:1.25;stroke-width:0.99999994px">ring:2</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="431.57083"
+       y="668.00427"
+       id="text4359-3"><tspan
+         sodipodi:role="line"
+         id="tspan4361-0"
+         x="431.57083"
+         y="668.00427"
+         style="font-size:22.50000381px;line-height:1.25;stroke-width:0.99999994px">ring:3</tspan></text>
+    <ellipse
+       style="display:inline;opacity:1;fill:#cbffce;fill-opacity:1;stroke:#000000;stroke-width:0.78720933;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4297-8"
+       cx="567.03992"
+       cy="661.97827"
+       rx="39.6064"
+       ry="19.606394" />
+    <ellipse
+       style="display:inline;opacity:1;fill:#cbffce;fill-opacity:1;stroke:#000000;stroke-width:0.74310595;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4301-6"
+       cx="650.90234"
+       cy="661.97827"
+       rx="39.628456"
+       ry="18.699875" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="563.82562"
+       y="667.88892"
+       id="text4351-8"><tspan
+         sodipodi:role="line"
+         id="tspan4353-0"
+         x="563.82562"
+         y="667.88892"
+         style="font-size:22.50000381px;line-height:1.25;stroke-width:0.99999994px">ring:4</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="650.6936"
+       y="667.88892"
+       id="text4359-5"><tspan
+         sodipodi:role="line"
+         id="tspan4361-6"
+         x="650.6936"
+         y="667.88892"
+         style="font-size:22.50000381px;line-height:1.25;stroke-width:0.99999994px">ring:5</tspan></text>
+    <ellipse
+       style="display:inline;opacity:1;fill:#ffe6d5;fill-opacity:1;stroke:#000000;stroke-width:0.78720933;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4297-3"
+       cx="129.49995"
+       cy="749.63892"
+       rx="39.6064"
+       ry="19.606394" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="130.33492"
+       y="758.07092"
+       id="text4351-0"><tspan
+         sodipodi:role="line"
+         id="tspan4353-6"
+         x="130.33492"
+         y="758.07092"
+         style="font-size:22.50000381px;line-height:1.25;stroke-width:0.99999994px">fwd1</tspan></text>
+    <ellipse
+       style="display:inline;opacity:1;fill:#ffe6d5;fill-opacity:1;stroke:#000000;stroke-width:0.78720933;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4297-3-4"
+       cx="500.53751"
+       cy="749.63892"
+       rx="39.606396"
+       ry="19.606392" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="500.0018"
+       y="758.07092"
+       id="text4351-0-9"><tspan
+         sodipodi:role="line"
+         id="tspan4353-6-7"
+         x="500.0018"
+         y="758.07092"
+         style="font-size:22.50000191px;line-height:1.25;stroke-width:0.99999994px">fwd3</tspan></text>
+    <ellipse
+       style="display:inline;opacity:1;fill:#ffe6d5;fill-opacity:1;stroke:#000000;stroke-width:0.78720933;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4297-3-9"
+       cx="283.57318"
+       cy="749.63892"
+       rx="39.606396"
+       ry="19.606392" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="280.35892"
+       y="758.07092"
+       id="text4351-0-2"><tspan
+         sodipodi:role="line"
+         id="tspan4353-6-6"
+         x="280.35892"
+         y="758.07092"
+         style="font-size:22.50000191px;line-height:1.25;stroke-width:0.99999994px">fwd2</tspan></text>
+    <ellipse
+       style="display:inline;opacity:1;fill:#ffe6d5;fill-opacity:1;stroke:#000000;stroke-width:0.78720933;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path4297-3-8"
+       cx="650.90234"
+       cy="749.63892"
+       rx="39.606396"
+       ry="19.606392" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;display:inline;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="651.08362"
+       y="758.07092"
+       id="text4351-0-8"><tspan
+         sodipodi:role="line"
+         id="tspan4353-6-63"
+         x="651.08362"
+         y="758.07092"
+         style="font-size:22.50000191px;line-height:1.25;stroke-width:0.99999994px">fwd4</tspan></text>
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="M 129.55532,821.16742 V 769.24529"
+       id="path11466"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="M 129.55364,730.03254 V 681.58465"
+       id="path11468"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker4047)"
+       d="m 129.55405,642.37189 v -32.1597"
+       id="path11470"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 208.57319,610.21219 v 33.17012"
+       id="path11472"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 208.64328,680.57771 v 69.73091 h 35.34662"
+       id="path11476"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 323.15905,750.27005 h 30.05702 V 681.3719"
+       id="path11480"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker11536)"
+       d="M 352.80112,642.55524 V 610.21219"
+       id="path11482"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 426.88254,680.55859 v 67.07146 h 34.25701"
+       id="path11490"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 540.12337,750.27005 h 34.07487 v -69.00827"
+       id="path11492"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker11702)"
+       d="M 573.89219,642.66753 V 610.21219"
+       id="path11496"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 653.90285,610.21219 v 33.067"
+       id="path11498"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 653.90285,680.67735 v 49.35601"
+       id="path11500"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.93750012px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       d="m 653.90285,769.18906 v 51.27866"
+       id="path11502"
+       inkscape:connector-curvature="0" />
+  </g>
+  <g
+     inkscape:groupmode="layer"
+     id="layer4"
+     inkscape:label="Label"
+     style="display:inline"
+     transform="translate(-10.358874,-474.54074)">
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="381.32147"
+       y="814.52301"
+       id="text4205"><tspan
+         sodipodi:role="line"
+         id="tspan4207"
+         x="381.32147"
+         y="814.52301"
+         style="font-size:22.50000572px;line-height:1.25">spp_vf</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="177.07144"
+       y="569.18524"
+       id="text4225"><tspan
+         sodipodi:role="line"
+         id="tspan4227"
+         x="177.07144"
+         y="569.18524"
+         style="font-size:22.50000572px;line-height:1.25">app 1</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="129.23628"
+       y="841.98718"
+       id="text4319"><tspan
+         sodipodi:role="line"
+         id="tspan4321"
+         x="129.23628"
+         y="841.98718"
+         style="font-size:22.50000572px;line-height:1.25">phy:0</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="651.0946"
+       y="842.27289"
+       id="text4323"><tspan
+         sodipodi:role="line"
+         id="tspan4325"
+         x="651.0946"
+         y="842.27289"
+         style="font-size:22.50000572px;line-height:1.25">phy:1</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="45.571438"
+       y="506.36221"
+       id="text4327"><tspan
+         sodipodi:role="line"
+         id="tspan4329"
+         x="45.571438"
+         y="506.36221"
+         style="font-size:22.50000572px;line-height:1.25">host</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="129.23628"
+       y="667.99878"
+       id="text4351"><tspan
+         sodipodi:role="line"
+         id="tspan4353"
+         x="129.23628"
+         y="667.99878"
+         style="font-size:22.50000572px;line-height:1.25">ring:0</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="212.95944"
+       y="667.88892"
+       id="text4359"><tspan
+         sodipodi:role="line"
+         id="tspan4361"
+         x="212.95944"
+         y="667.88892"
+         style="font-size:22.50000572px;line-height:1.25">ring:1</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:0%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:center;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="174.50002"
+       y="601.73322"
+       id="text4407"><tspan
+         sodipodi:role="line"
+         x="174.50002"
+         y="601.73322"
+         id="tspan4411"
+         style="font-size:22.50000572px;line-height:1.25">pipe:0</tspan></text>
+  </g>
+</svg>
diff --git a/docs/guides/usecases/index.rst b/docs/guides/usecases/index.rst
index 6508610..2e8293e 100644
--- a/docs/guides/usecases/index.rst
+++ b/docs/guides/usecases/index.rst
@@ -32,3 +32,4 @@ or via REST API from :ref:`API Reference<spp_api_ref_index>`.
    spp_pcap
    multi_nodes
    hardware-offload
+   pipe_pmd
diff --git a/docs/guides/usecases/pipe_pmd.rst b/docs/guides/usecases/pipe_pmd.rst
new file mode 100644
index 0000000..b196880
--- /dev/null
+++ b/docs/guides/usecases/pipe_pmd.rst
@@ -0,0 +1,133 @@
+..  SPDX-License-Identifier: BSD-3-Clause
+    Copyright(c) 2020 Nippon Telegraph and Telephone Corporation
+
+
+.. _usecase_pipe_pmd:
+
+Pipe PMD
+========
+
+Pipe PMD constitutes a virtual Ethernet device (named spp_pipe) using
+rings which the spp_primary allocated.
+
+It is necessary for the DPDK application using spp_pipe to implement
+it as the secondary process under the spp_primary as the primary
+process.
+
+Using spp_pipe enables high-speed packet transfer through rings
+among DPDK applications using spp_pipe and SPP secondary processes
+such as spp_nfv and spp_vf.
+
+Using pipe PMD
+--------------
+
+Create a pipe port by requesting to the spp_primary to use spp_pipe
+beforehand.
+There are :ref:`CLI<commands_primary_add>` and
+:ref:`REST API<api_spp_ctl_spp_primary_put_ports>` to create a pipe
+port.
+A ring used for rx transfer and a ring used for tx transfer are
+specified at a pipe port creation.
+
+For example creating ``pipe:0`` with ``ring:0`` for rx and
+``ring:1`` for tx by CLI as follows.
+
+.. code-block:: none
+
+    spp > pri; add pipe:0 ring:0 ring:1
+
+The name as the Ethernet device of ``pipe:N`` is ``spp_pipeN``.
+DPDK application which is the secondary process of the spp_primary
+can get the port id of the device using ``rte_eth_dev_get_port_by_name``.
+
+Requirement of DPDK application using spp_pipe
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+It is necessary to use the common mbuf mempool of the SPP processes.
+
+.. code-block:: C
+
+    #define PKTMBUF_POOL_NAME "Mproc_pktmbuf_pool"
+
+    struct rte_mempool *mbuf_pool;
+
+    mbuf_pool = rte_mempool_lookup(PKTBBUF_POOL_NAME);
+
+Use cases
+---------
+
+Here are some examples using spp_pipe.
+
+.. note::
+
+    A ring allocated by the spp_primary assumes it is single
+    producer and single consumer. It is user responsibility
+    that each ring in the model has single producer and single
+    consumer.
+
+Direct communication between applications
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. _figure_pipe_usecase_pipe:
+
+.. figure:: ../images/usecases/pipe_usecase_pipe.*
+   :width: 50%
+
+To create pipe ports by CLI before running applications as follows.
+
+.. code-block:: none
+
+    spp > pri; add pipe:0 ring:0 ring:1
+    spp > pri; add pipe:1 ring:1 ring:0
+
+Fixed application chain using spp_nfv
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. _figure_pipe_usecase_sfc_nfv:
+
+.. figure:: ../images/usecases/pipe_usecase_sfc_nfv.*
+   :width: 50%
+
+To construct the model by CLI before running applications as follows.
+
+.. code-block:: none
+
+    spp > pri; add pipe:0 ring:0 ring:1
+    spp > pri; add pipe:1 ring:1 ring:2
+    spp > nfv 1; add ring:0
+    spp > nfv 1; patch phy:0 ring:0
+    spp > nfv 1; forward
+    spp > nfv 2; add ring:2
+    spp > nfv 2; patch ring:2 phy:1
+    spp > nfv 2; forward
+
+Service function chaining using spp_vf
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. _figure_pipe_usecase_sfc_vf:
+
+.. figure:: ../images/usecases/pipe_usecase_sfc_vf.*
+   :width: 80%
+
+To construct the model by CLI before running applications as follows.
+
+.. code-block:: none
+
+    spp > pri; add pipe:0 ring:0 ring:1
+    spp > pri; add pipe:1 ring:2 ring:3
+    spp > pri; add pipe:2 ring:4 ring:5
+    spp > vf 1; component start fwd1 2 forward
+    spp > vf 1; component start fwd2 3 forward
+    spp > vf 1; component start fwd3 4 forward
+    spp > vf 1; component start fwd4 5 forward
+    spp > vf 1; port add phy:0 rx fwd1
+    spp > vf 1; port add ring:0 tx fwd1
+    spp > vf 1; port add ring:1 rx fwd2
+    spp > vf 1; port add ring:2 tx fwd2
+    spp > vf 1; port add ring:3 rx fwd3
+    spp > vf 1; port add ring:4 tx fwd3
+    spp > vf 1; port add ring:5 rx fwd4
+    spp > vf 1; port add phy:1 tx fwd4
+
+Since applications are connected not directly but through spp_vf,
+service chaining can be modified without restarting applications.
-- 
2.17.0


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [spp] (x-fn-spp-ml 671)  [PATCH 0/3] add document of pipe PMD
  2020-04-12 23:00 [spp] [PATCH 0/3] add document of pipe PMD Itsuro Oda
                   ` (2 preceding siblings ...)
  2020-04-12 23:00 ` [spp] [PATCH 3/3] docs: add document of pipe PMD usecase Itsuro Oda
@ 2020-04-30  2:38 ` Hideyuki Yamashita
  2020-05-25  3:07 ` [spp] " Yasufumi Ogawa
  4 siblings, 0 replies; 6+ messages in thread
From: Hideyuki Yamashita @ 2020-04-30  2:38 UTC (permalink / raw)
  To: Itsuro Oda; +Cc: spp, ferruh.yigit, yasufum.o

Reviewed-by: Hideyuki Yamashita <yamashita.hideyuki@ntt-tx.co.jp>

> This series of patches add document about pipe PMD.
> 
> Itsuro Oda (3):
>   docs: add CLI for pipe PMD
>   docs: add REST API for pipe PMD
>   docs: add document of pipe PMD usecase
> 
>  docs/guides/api_ref/spp_primary.rst           |  56 +-
>  docs/guides/commands/primary.rst              |  16 +
>  .../images/usecases/pipe_usecase_pipe.svg     | 611 ++++++++++++
>  .../images/usecases/pipe_usecase_sfc_nfv.svg  | 722 ++++++++++++++
>  .../images/usecases/pipe_usecase_sfc_vf.svg   | 933 ++++++++++++++++++
>  docs/guides/usecases/index.rst                |   1 +
>  docs/guides/usecases/pipe_pmd.rst             | 133 +++
>  7 files changed, 2464 insertions(+), 8 deletions(-)
>  create mode 100644 docs/guides/images/usecases/pipe_usecase_pipe.svg
>  create mode 100644 docs/guides/images/usecases/pipe_usecase_sfc_nfv.svg
>  create mode 100644 docs/guides/images/usecases/pipe_usecase_sfc_vf.svg
>  create mode 100644 docs/guides/usecases/pipe_pmd.rst
> 
> -- 
> 2.17.0




^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [spp] [PATCH 0/3] add document of pipe PMD
  2020-04-12 23:00 [spp] [PATCH 0/3] add document of pipe PMD Itsuro Oda
                   ` (3 preceding siblings ...)
  2020-04-30  2:38 ` [spp] (x-fn-spp-ml 671) [PATCH 0/3] add document of pipe PMD Hideyuki Yamashita
@ 2020-05-25  3:07 ` Yasufumi Ogawa
  4 siblings, 0 replies; 6+ messages in thread
From: Yasufumi Ogawa @ 2020-05-25  3:07 UTC (permalink / raw)
  To: Itsuro Oda, spp

> This series of patches add document about pipe PMD.
Acked-by: Yasufumi Ogawa <yasufum.o@gmail.com>

> 
> Itsuro Oda (3):
>    docs: add CLI for pipe PMD
>    docs: add REST API for pipe PMD
>    docs: add document of pipe PMD usecase
> 
>   docs/guides/api_ref/spp_primary.rst           |  56 +-
>   docs/guides/commands/primary.rst              |  16 +
>   .../images/usecases/pipe_usecase_pipe.svg     | 611 ++++++++++++
>   .../images/usecases/pipe_usecase_sfc_nfv.svg  | 722 ++++++++++++++
>   .../images/usecases/pipe_usecase_sfc_vf.svg   | 933 ++++++++++++++++++
>   docs/guides/usecases/index.rst                |   1 +
>   docs/guides/usecases/pipe_pmd.rst             | 133 +++
>   7 files changed, 2464 insertions(+), 8 deletions(-)
>   create mode 100644 docs/guides/images/usecases/pipe_usecase_pipe.svg
>   create mode 100644 docs/guides/images/usecases/pipe_usecase_sfc_nfv.svg
>   create mode 100644 docs/guides/images/usecases/pipe_usecase_sfc_vf.svg
>   create mode 100644 docs/guides/usecases/pipe_pmd.rst
> 

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2020-05-25  3:07 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-04-12 23:00 [spp] [PATCH 0/3] add document of pipe PMD Itsuro Oda
2020-04-12 23:00 ` [spp] [PATCH 1/3] docs: add CLI for " Itsuro Oda
2020-04-12 23:00 ` [spp] [PATCH 2/3] docs: add REST API " Itsuro Oda
2020-04-12 23:00 ` [spp] [PATCH 3/3] docs: add document of pipe PMD usecase Itsuro Oda
2020-04-30  2:38 ` [spp] (x-fn-spp-ml 671) [PATCH 0/3] add document of pipe PMD Hideyuki Yamashita
2020-05-25  3:07 ` [spp] " Yasufumi Ogawa

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).