From e6918187568dbd01842d8d1d2c808ce16a894239 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 21 Apr 2024 13:54:28 +0200 Subject: Adding upstream version 18.2.2. Signed-off-by: Daniel Baumann --- src/msg/async/dpdk/IPChecksum.h | 72 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 src/msg/async/dpdk/IPChecksum.h (limited to 'src/msg/async/dpdk/IPChecksum.h') diff --git a/src/msg/async/dpdk/IPChecksum.h b/src/msg/async/dpdk/IPChecksum.h new file mode 100644 index 000000000..9af4a86b9 --- /dev/null +++ b/src/msg/async/dpdk/IPChecksum.h @@ -0,0 +1,72 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +/* + * This file is open source software, licensed to you under the terms + * of the Apache License, Version 2.0 (the "License"). See the NOTICE file + * distributed with this work for additional information regarding copyright + * ownership. 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. + */ +/* + * Copyright (C) 2014 Cloudius Systems, Ltd. + */ + +#ifndef CEPH_MSG_CHECKSUM_H_ +#define CEPH_MSG_CHECKSUM_H_ + +#include +#include +#include + +#include "Packet.h" + +uint16_t ip_checksum(const void* data, size_t len); + +struct checksummer { + __int128 csum = 0; + bool odd = false; + void sum(const char* data, size_t len); + void sum(const Packet& p); + void sum(uint8_t data) { + if (!odd) { + csum += data << 8; + } else { + csum += data; + } + odd = !odd; + } + void sum(uint16_t data) { + if (odd) { + sum(uint8_t(data >> 8)); + sum(uint8_t(data)); + } else { + csum += data; + } + } + void sum(uint32_t data) { + if (odd) { + sum(uint16_t(data)); + sum(uint16_t(data >> 16)); + } else { + csum += data; + } + } + void sum_many() {} + template + void sum_many(T0 data, T... rest) { + sum(data); + sum_many(rest...); + } + uint16_t get() const; +}; + +#endif /* CEPH_MSG_CHECKSUM_H_ */ -- cgit v1.2.3