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-rw-r--r--VNFs/DPPD-PROX/mbuf_utils.h57
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
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--- /dev/null
+++ b/VNFs/DPPD-PROX/mbuf_utils.h
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+/*
+// 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_ */