diff options
author | Deepak S <deepak.s@linux.intel.com> | 2017-07-13 21:26:50 -0700 |
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committer | Deepak S <deepak.s@linux.intel.com> | 2017-07-14 04:58:47 -0700 |
commit | 7286b2518ec8e4398b512ce95def9166a7af2e4a (patch) | |
tree | c93ef65d9e73e8893ccecb720152e16aae96a8b6 /VNFs/DPPD-PROX/tools/flow_extract/memreader.cpp | |
parent | adcb79da90176b27224eeb1d00aa0e611ef85a9b (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/memreader.cpp')
-rw-r--r-- | VNFs/DPPD-PROX/tools/flow_extract/memreader.cpp | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/VNFs/DPPD-PROX/tools/flow_extract/memreader.cpp b/VNFs/DPPD-PROX/tools/flow_extract/memreader.cpp new file mode 100644 index 00000000..df77631c --- /dev/null +++ b/VNFs/DPPD-PROX/tools/flow_extract/memreader.cpp @@ -0,0 +1,106 @@ +/* +// 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 "memreader.hpp" +#include "mappedfile.hpp" +#include "stream3.hpp" + +MemReader::MemReader(MappedFile *file, const vector<size_t> &offsets) +{ + initRanges(file->getMapBeg(), file->getMapEnd(), offsets); +} + +bool MemReader::read(Stream3 *stream) +{ + if (ranges.empty()) + return false; + + readStream(stream, getLowestID()); + removeEmptyRanges(); + return true; +} + +uint32_t MemReader::getLowestID() const +{ + uint32_t lowestID = UINT32_MAX; + uint32_t rangeID; + + for (size_t i = 0; i < ranges.size(); ++i) { + rangeID = Stream3::getIDFromMem(ranges[i].first); + if (rangeID < lowestID) + lowestID = rangeID; + } + return lowestID; +} + +void MemReader::readStream(Stream3 *stream, uint32_t id) +{ + stream->removeAllPackets(); + stream->setID(id); + + size_t len = 0; + for (size_t i = 0; i < ranges.size(); ++i) { + if (Stream3::getIDFromMem(ranges[i].first) == id) { + stream->addFromMemory(ranges[i].first, &len); + ranges[i].first += len; + } + } +} + +void MemReader::removeEmptyRanges() +{ + vector<pair <uint8_t *, uint8_t *> > original = ranges; + size_t destinationIdx = 0; + + for (size_t i = 0; i < original.size(); ++i) { + if (original[i].first < original[i].second) + ranges[destinationIdx++] = original[i]; + } + ranges.resize(destinationIdx); +} + +void MemReader::initRanges(uint8_t *begin, uint8_t *end, const vector<size_t> &offsets) +{ + ranges.resize(offsets.size()); + + totalLength = 0; + for (size_t i = 0; i < offsets.size(); ++i) { + ranges[i].first = begin + offsets[i]; + if (i != offsets.size() - 1) + ranges[i].second = begin + offsets[i + 1]; + else + ranges[i].second = end; + totalLength += ranges[i].second - ranges[i].first; + } + removeEmptyRanges(); +} + +size_t MemReader::getRangeLengths() const +{ + size_t total = 0; + + for (size_t i = 0; i < ranges.size(); ++i) { + total += ranges[i].second - ranges[i].first; + } + return total; +} + +size_t MemReader::consumed() const +{ + return totalLength - getRangeLengths(); +} |