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, 57 insertions, 0 deletions

diff --git a/VNFs/DPPD-PROX/mbuf_utils.h b/VNFs/DPPD-PROX/mbuf_utils.h
new file mode 100644
index 00000000..22d57a39
--- /dev/null
+++ b/VNFs/DPPD-PROX/mbuf_utils.h
@@ -0,0 +1,57 @@
+/*
+// 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.
+*/
+
+#ifndef _MBUF_UTILS_H_
+#define _MBUF_UTILS_H_
+
+#include <string.h>
+
+#include <rte_ip.h>
+#include <rte_version.h>
+#include <rte_ether.h>
+
+static void init_mbuf_seg(struct rte_mbuf *mbuf)
+{
+#if RTE_VERSION >= RTE_VERSION_NUM(1,8,0,0)
+	mbuf->nb_segs = 1;
+#else
+	mbuf->pkt.nb_segs = 1;
+#endif
+	rte_mbuf_refcnt_set(mbuf, 1);
+}
+
+static uint16_t pkt_len_to_wire_size(uint16_t pkt_len)
+{
+	return (pkt_len < 60? 60 : pkt_len) + ETHER_CRC_LEN + 20;
+}
+
+static uint16_t mbuf_wire_size(const struct rte_mbuf *mbuf)
+{
+	uint16_t pkt_len = rte_pktmbuf_pkt_len(mbuf);
+
+	return pkt_len_to_wire_size(pkt_len);
+}
+
+static uint16_t mbuf_calc_padlen(const struct rte_mbuf *mbuf, void *pkt, struct ipv4_hdr *ipv4)
+{
+	uint16_t pkt_len = rte_pktmbuf_pkt_len(mbuf);
+	uint16_t ip_offset = (uint8_t *)ipv4 - (uint8_t*)pkt;
+	uint16_t ip_total_len = rte_be_to_cpu_16(ipv4->total_length);
+
+	return pkt_len - ip_total_len - ip_offset;
+}
+
+#endif /* _MBUF_UTILS_H_ */