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CRC32c is used in SCTP for integrity checking, and the third_party/crc32c library (https://github.com/google/crc32c) which has been optimized for SSE42 and arm64 and has a much faster fallback implementation for other architectures. Running ./out/Release/dcsctp_benchmark Run on (12 X 4500 MHz CPU s) CPU Caches: L1 Data 32 KiB (x6) L1 Instruction 32 KiB (x6) L2 Unified 1024 KiB (x6) L3 Unified 8448 KiB (x1) Load Average: 11.01, 17.53, 17.11 ------------------------------------------------------------------------------ Benchmark Time CPU Iterations UserCounters... ------------------------------------------------------------------------------ BM_PumpData/1 676 ns 676 ns 1034087 bytes_per_second=1.41063M/s items_per_second=1.47916M/s BM_PumpData/8 671 ns 671 ns 1041809 bytes_per_second=11.3643M/s items_per_second=1.48955M/s BM_PumpData/128 725 ns 725 ns 967170 bytes_per_second=168.398M/s items_per_second=1.37952M/s BM_PumpData/512 800 ns 800 ns 873854 bytes_per_second=610.125M/s items_per_second=1.24954M/s BM_PumpData/1024 911 ns 911 ns 775785 bytes_per_second=1072.2M/s items_per_second=1097.93k/s BM_PumpData/2048 1988 ns 1988 ns 352444 bytes_per_second=982.409M/s items_per_second=502.993k/s BM_PumpData/4096 3893 ns 3893 ns 179999 bytes_per_second=1003.31M/s items_per_second=256.848k/s BM_PumpData/8192 7477 ns 7477 ns 92790 bytes_per_second=1044.88M/s items_per_second=133.745k/s BM_PumpData/65536 97156 ns 97153 ns 7089 bytes_per_second=643.318M/s items_per_second=10.2931k/s BM_EchoServer/1 634 ns 634 ns 1130860 bytes_per_second=1.50512M/s items_per_second=1.57823M/s BM_EchoServer/8 614 ns 614 ns 1136372 bytes_per_second=12.4286M/s items_per_second=1.62904M/s BM_EchoServer/128 644 ns 644 ns 1073464 bytes_per_second=189.618M/s items_per_second=1.55335M/s BM_EchoServer/512 734 ns 734 ns 949487 bytes_per_second=665.181M/s items_per_second=1.36229M/s BM_EchoServer/1024 836 ns 836 ns 838010 bytes_per_second=1.14046G/s items_per_second=1.19586M/s BM_EchoServer/2048 1939 ns 1939 ns 345067 bytes_per_second=1007.27M/s items_per_second=515.724k/s BM_EchoServer/4096 3984 ns 3983 ns 176047 bytes_per_second=980.737M/s items_per_second=251.069k/s BM_EchoServer/8192 7486 ns 7484 ns 95780 bytes_per_second=1043.85M/s items_per_second=133.613k/s BM_EchoServer/65536 92360 ns 92346 ns 7821 bytes_per_second=676.805M/s items_per_second=10.8289k/s No-Presubmit: True Bug: webrtc:12614 Change-Id: Iff21035ee78b263ee0e4b0fe3d07eea24064b921 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/215002 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Victor Costan <pwnall@chromium.org> Reviewed-by: Florent Castelli <orphis@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33842}
29 lines
953 B
C++
29 lines
953 B
C++
/*
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* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "net/dcsctp/packet/crc32c.h"
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#include <cstdint>
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#include "third_party/crc32c/src/include/crc32c/crc32c.h"
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namespace dcsctp {
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uint32_t GenerateCrc32C(rtc::ArrayView<const uint8_t> data) {
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uint32_t crc32c = crc32c_value(data.data(), data.size());
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// Byte swapping for little endian byte order:
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uint8_t byte0 = crc32c;
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uint8_t byte1 = crc32c >> 8;
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uint8_t byte2 = crc32c >> 16;
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uint8_t byte3 = crc32c >> 24;
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crc32c = ((byte0 << 24) | (byte1 << 16) | (byte2 << 8) | byte3);
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return crc32c;
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}
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} // namespace dcsctp
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