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authorDeepak S <deepak.s@linux.intel.com>2017-07-13 21:26:50 -0700
committerDeepak S <deepak.s@linux.intel.com>2017-07-14 04:58:47 -0700
commit7286b2518ec8e4398b512ce95def9166a7af2e4a (patch)
treec93ef65d9e73e8893ccecb720152e16aae96a8b6 /VNFs/DPPD-PROX/tools/flow_extract/mappedfile.cpp
parentadcb79da90176b27224eeb1d00aa0e611ef85a9b (diff)
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>
Diffstat (limited to 'VNFs/DPPD-PROX/tools/flow_extract/mappedfile.cpp')
-rw-r--r--VNFs/DPPD-PROX/tools/flow_extract/mappedfile.cpp109
1 files changed, 109 insertions, 0 deletions
diff --git a/VNFs/DPPD-PROX/tools/flow_extract/mappedfile.cpp b/VNFs/DPPD-PROX/tools/flow_extract/mappedfile.cpp
new file mode 100644
index 00000000..b2d1a9da
--- /dev/null
+++ b/VNFs/DPPD-PROX/tools/flow_extract/mappedfile.cpp
@@ -0,0 +1,109 @@
+/*
+// 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 <cstdlib>
+#include <cstdio>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <iostream>
+#include <cerrno>
+#include <sys/mman.h>
+#include <cstring>
+
+#include "mappedfile.hpp"
+
+static void zeroOutFile(int fd, size_t size)
+{
+ void *empty = calloc(1, 4096);
+
+ while (size > 4096) {
+ write(fd, empty, 4096);
+ size -= 4096;
+ }
+ write(fd, empty, size);
+ free(empty);
+}
+
+int MappedFile::open(const string& filePath, size_t size)
+{
+ mappedFileSize = size;
+
+ fd = ::open(filePath.c_str(), O_RDWR | O_TRUNC | O_CREAT, S_IRUSR | S_IWUSR);
+ if (fd < 0) {
+ cerr << "Failed to open file " << filePath << ":" << strerror(errno) << endl;
+ return -1;
+ }
+
+ zeroOutFile(fd, size);
+ data = mmap(NULL, mappedFileSize, PROT_WRITE | PROT_READ, MAP_SHARED, fd, 0);
+
+ if (data == MAP_FAILED) {
+ cerr << "Failed to map file: " << strerror(errno) << endl;
+ return -1;
+ }
+ return 0;
+}
+
+static size_t getFileSize(const string& filePath)
+{
+ struct stat s;
+ if (stat(filePath.c_str(), &s))
+ return -1;
+
+ return s.st_size;
+}
+
+int MappedFile::open(const string& filePath)
+{
+ mappedFileSize = getFileSize(filePath);
+
+ fd = ::open(filePath.c_str(), O_RDONLY);
+ if (fd < 0) {
+ cerr << "Failed to open file " << filePath << ":" << strerror(errno) << endl;
+ return -1;
+ }
+
+ data = mmap(NULL, mappedFileSize, PROT_READ, MAP_SHARED, fd, 0);
+
+ if (data == MAP_FAILED) {
+ cerr << "Failed to map file: " << strerror(errno) << endl;
+ return -1;
+ }
+ return 0;
+}
+
+int MappedFile::sync()
+{
+ if (msync(data, mappedFileSize, MS_SYNC) == -1) {
+ cerr << "Failed to sync: " << strerror(errno) << endl;
+ return -1;
+ }
+ return 0;
+}
+
+
+void MappedFile::close()
+{
+ sync();
+ munmap(data, mappedFileSize);
+ ::close(fd);
+}
+
+size_t MappedFile::size() const
+{
+ return mappedFileSize;
+}