Adding PROX(Packet pROcessing eXecution engine) VNF to sampleVNF

JIRA: SAMPLEVNF-55

PROX is a DPDK-based application implementing Telco use-cases such as
a simplified BRAS/BNG, light-weight AFTR... It also allows configuring
finer grained network functions like QoS, Routing, load-balancing...

(We are moving PROX version v039 to sampleVNF
https://01.org/intel-data-plane-performance-demonstrators/prox-overview)

Change-Id: Ia3cb02cf0e49ac5596e922c197ff7e010293d033
Signed-off-by: Deepak S <deepak.s@linux.intel.com>

2 files changed, 127 insertions, 0 deletions

diff --git a/VNFs/DPPD-PROX/helper-scripts/demo-scripts/prox.py b/VNFs/DPPD-PROX/helper-scripts/demo-scripts/prox.py
new file mode 100644
index 00000000..f9250d21
--- /dev/null
+++ b/VNFs/DPPD-PROX/helper-scripts/demo-scripts/prox.py
@@ -0,0 +1,53 @@
+#!/bin/env python2.7
+
+##
+## Copyright (c) 2010-2017 Intel Corporation
+##
+## Licensed under the Apache License, Version 2.0 (the "License");
+## you may not use this file except in compliance with the License.
+## You may obtain a copy of the License at
+##
+##     http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+##
+
+import socket
+
+class prox:
+    def __init__(self, ip):
+        self._ip = ip;
+        self._dat = ""
+        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        try:
+            sock.connect((self._ip, 8474))
+        except:
+            raise Exception("Failed to connect to PROX on " + self._ip + ":8474")
+        self._sock = sock;
+
+    def send(self, msg):
+        self._sock.sendall(msg + "\n");
+        return self
+    def recv(self):
+        ret_str = "";
+        done = 0;
+        while done == 0:
+            if (len(self._dat) == 0):
+                self._dat = self._sock.recv(256);
+
+            while(len(self._dat)):
+                if (self._dat[0] == '\n'):
+                    done = 1
+                    self._dat = self._dat[1:]
+                    break;
+                else:
+                    ret_str += self._dat[0];
+                    self._dat = self._dat[1:]
+        return ret_str;
+
+    def wait_cmd_finished(self):
+        self.send("stats hz").recv();
diff --git a/VNFs/DPPD-PROX/helper-scripts/demo-scripts/tx_rate.py b/VNFs/DPPD-PROX/helper-scripts/demo-scripts/tx_rate.py
new file mode 100644
index 00000000..112b583a
--- /dev/null
+++ b/VNFs/DPPD-PROX/helper-scripts/demo-scripts/tx_rate.py
@@ -0,0 +1,74 @@
+#!/bin/env python2.7
+
+##
+## Copyright (c) 2010-2017 Intel Corporation
+##
+## Licensed under the Apache License, Version 2.0 (the "License");
+## you may not use this file except in compliance with the License.
+## You may obtain a copy of the License at
+##
+##     http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+##
+
+from prox import *
+from decimal import *
+from time import *
+
+class data_point:
+    value = 0;
+    tsc = 0;
+    def __init__(self, value, tsc):
+        self.value = value;
+        self.tsc = tsc;
+
+def measure_tx(prox_instance, port_id):
+    port_tx_pkt = "port(" + str(port_id) + ").tx.packets"
+    port_tsc = "port(" + str(port_id) + ").tsc";
+    cmd = "stats " + port_tx_pkt + "," + port_tsc;
+    reply = prox_instance.send(cmd).recv().split(",");
+
+    return data_point(int(reply[0]), int(reply[1]));
+
+def get_rate(first, second, hz):
+    tsc_diff = second.tsc - first.tsc;
+    value_diff = second.value - first.value;
+
+    return int(Decimal(value_diff * hz) / tsc_diff)
+
+# make sure that prox has been started with the -t parameter
+prox_instance = prox("127.0.0.1")
+print "Connected to prox"
+
+hz = int(prox_instance.send("stats hz").recv());
+
+print "System is running at " + str(hz) + " Hz"
+
+print "Showing TX pps on port 0"
+
+update_interval = 0.1
+
+print "Requesting new data every " + str(update_interval) + "s"
+
+measure = measure_tx(prox_instance, 0);
+while (True):
+    sleep(update_interval)
+    measure2 = measure_tx(prox_instance, 0);
+
+    # since PROX takes measurements at a configured rate (through
+    # update interval command or throw -r command line parameter), it
+    # might be possible that two consecutive measurements report the
+    # same. To get updates at a frequency higher than 1 Hz,
+    # reconfigure prox as mentioned above.
+
+    if (measure.tsc == measure2.tsc):
+        continue;
+
+    print get_rate(measure, measure2, hz);
+
+    measure = measure2;