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>

1 files changed, 76 insertions, 0 deletions

diff --git a/VNFs/DPPD-PROX/tools/flow_extract/pcapreader.cpp b/VNFs/DPPD-PROX/tools/flow_extract/pcapreader.cpp
new file mode 100644
index 00000000..6b5a6734
--- /dev/null
+++ b/VNFs/DPPD-PROX/tools/flow_extract/pcapreader.cpp
@@ -0,0 +1,76 @@
+/*
+// 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.
+*/
+
+#include <pcap.h>
+#include <cstring>
+#include <linux/in.h>
+
+#include "pcapreader.hpp"
+
+int PcapReader::open(const string& file_path)
+{
+	char err_str[PCAP_ERRBUF_SIZE];
+
+	if (m_handle) {
+		m_error = "Pcap file already open";
+		return -1;
+	}
+
+	m_handle = pcap_open_offline_with_tstamp_precision(file_path.c_str(),
+							   PCAP_TSTAMP_PRECISION_NANO,
+							   err_str);
+
+	if (!m_handle) {
+		m_error = "Failed to open pcap file";
+		return -1;
+	}
+
+	m_file_beg = ftell(pcap_file(m_handle));
+	fseek(pcap_file(m_handle), 0, SEEK_END);
+	m_file_end = ftell(pcap_file(m_handle));
+	fseek(pcap_file(m_handle), m_file_beg, SEEK_SET);
+
+	return 0;
+}
+
+int PcapReader::readOnce(PcapPkt *pkt, uint64_t pos)
+{
+	return -1;
+}
+
+int PcapReader::read(PcapPkt *pkt)
+{
+	if (!m_handle) {
+		m_error = "No pcap file opened";
+	}
+
+	const uint8_t *buf = pcap_next(m_handle, &pkt->header);
+
+	if (buf) {
+		memcpy(pkt->buf, buf, pkt->header.len);
+		pktReadCount++;
+	}
+
+	return !!buf;
+}
+
+void PcapReader::close()
+{
+	if (m_handle)
+		pcap_close(m_handle);
+
+	m_handle = NULL;
+}