[RFC PATCH v1 16/18] dts: merge DTS framework/ixia_network/packet_parser.py to DPDK

["Juraj Linkeš" <juraj.linkes@pantheon.tech>]

---
 dts/framework/ixia_network/packet_parser.py | 96 +++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 dts/framework/ixia_network/packet_parser.py

diff --git a/dts/framework/ixia_network/packet_parser.py b/dts/framework/ixia_network/packet_parser.py
new file mode 100644
index 0000000000..25e18f2e18
--- /dev/null
+++ b/dts/framework/ixia_network/packet_parser.py
@@ -0,0 +1,96 @@
+# BSD LICENSE
+#
+# Copyright(c) 2010-2021 Intel Corporation. All rights reserved.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#   * Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#   * Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+#   * Neither the name of Intel Corporation nor the names of its
+#     contributors may be used to endorse or promote products derived
+#     from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+import os
+from collections import OrderedDict
+
+from scapy.all import conf
+from scapy.fields import ConditionalField
+from scapy.packet import NoPayload
+from scapy.packet import Packet as scapyPacket
+from scapy.utils import rdpcap
+
+
+class PacketParser(object):
+    """parse packet full layers information"""
+
+    def __init__(self):
+        self.packetLayers = OrderedDict()
+        self.framesize = 64
+
+    def _parse_packet_layer(self, pkt_object):
+        """parse one packet every layers' fields and value"""
+        if pkt_object is None:
+            return
+
+        self.packetLayers[pkt_object.name] = OrderedDict()
+        for curfield in pkt_object.fields_desc:
+            if isinstance(curfield, ConditionalField) and not curfield._evalcond(
+                pkt_object
+            ):
+                continue
+            field_value = pkt_object.getfieldval(curfield.name)
+            if isinstance(field_value, scapyPacket) or (
+                curfield.islist and curfield.holds_packets and type(field_value) is list
+            ):
+                continue
+            repr_value = curfield.i2repr(pkt_object, field_value)
+            if isinstance(repr_value, str):
+                repr_value = repr_value.replace(
+                    os.linesep, os.linesep + " " * (len(curfield.name) + 4)
+                )
+            self.packetLayers[pkt_object.name][curfield.name] = repr_value
+
+        if isinstance(pkt_object.payload, NoPayload):
+            return
+        else:
+            self._parse_packet_layer(pkt_object.payload)
+
+    def _parse_pcap(self, pcapFile, number=0):
+        """parse one packet content"""
+        self.packetLayers = OrderedDict()
+        pcap_pkts = []
+        if isinstance(pcapFile, str):
+            if os.path.exists(pcapFile) is False:
+                warning = "{0} is not exist !".format(pcapFile)
+                raise Exception(warning)
+            pcap_pkts = rdpcap(pcapFile)
+        else:
+            pcap_pkts = pcapFile
+        # parse packets' every layers and fields
+        if len(pcap_pkts) == 0:
+            warning = "{0} is empty".format(pcapFile)
+            raise Exception(warning)
+        elif number >= len(pcap_pkts):
+            warning = "{0} is missing No.{1} packet".format(pcapFile, number)
+            raise Exception(warning)
+        else:
+            self._parse_packet_layer(pcap_pkts[number])
+            self.framesize = len(pcap_pkts[number]) + 4
-- 
2.20.1