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https://github.com/openvswitch/ovs
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dbba996be2
I looked at almost every uint<N>_t in the tree to determine whether it was really in network byte order, and converted the ones that were. The only remaining ones, modulo my mistakes, are in openflow.h. I'm not sure whether we should convert those, because there might be some value in remaining close to upstream for this header.
64 lines
2.5 KiB
C
64 lines
2.5 KiB
C
/*
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* Copyright (c) 2008, 2010, 2011 Nicira Networks.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef BYTE_ORDER_H
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#define BYTE_ORDER_H 1
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#include <arpa/inet.h>
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#include <sys/types.h>
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#include <inttypes.h>
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#include "openvswitch/types.h"
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static inline ovs_be64
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htonll(uint64_t n)
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{
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return htonl(1) == 1 ? n : ((uint64_t) htonl(n) << 32) | htonl(n >> 32);
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}
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static inline uint64_t
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ntohll(ovs_be64 n)
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{
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return htonl(1) == 1 ? n : ((uint64_t) ntohl(n) << 32) | ntohl(n >> 32);
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}
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/* These macros may substitute for htons(), htonl(), and htonll() in contexts
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* where function calls are not allowed, such as case labels. They should not
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* be used elsewhere because all of them evaluate their argument many times. */
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#ifdef WORDS_BIGENDIAN
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#define CONSTANT_HTONS(VALUE) ((ovs_be16) (VALUE))
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#define CONSTANT_HTONL(VALUE) ((ovs_be32) (VALUE))
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#define CONSTANT_HTONLL(VALUE) ((ovs_be64) (VALUE))
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#else
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#define CONSTANT_HTONS(VALUE) \
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(((((ovs_be16) (VALUE)) & 0xff00) >> 8) | \
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((((ovs_be16) (VALUE)) & 0x00ff) << 8))
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#define CONSTANT_HTONL(VALUE) \
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(((((ovs_be32) (VALUE)) & 0x000000ff) << 24) | \
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((((ovs_be32) (VALUE)) & 0x0000ff00) << 8) | \
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((((ovs_be32) (VALUE)) & 0x00ff0000) >> 8) | \
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((((ovs_be32) (VALUE)) & 0xff000000) >> 24))
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#define CONSTANT_HTONLL(VALUE) \
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(((((ovs_be64) (VALUE)) & UINT64_C(0x00000000000000ff)) << 56) | \
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((((ovs_be64) (VALUE)) & UINT64_C(0x000000000000ff00)) << 40) | \
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((((ovs_be64) (VALUE)) & UINT64_C(0x0000000000ff0000)) << 24) | \
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((((ovs_be64) (VALUE)) & UINT64_C(0x00000000ff000000)) << 8) | \
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((((ovs_be64) (VALUE)) & UINT64_C(0x000000ff00000000)) >> 8) | \
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((((ovs_be64) (VALUE)) & UINT64_C(0x0000ff0000000000)) >> 24) | \
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((((ovs_be64) (VALUE)) & UINT64_C(0x00ff000000000000)) >> 40) | \
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((((ovs_be64) (VALUE)) & UINT64_C(0xff00000000000000)) >> 56))
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#endif
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#endif /* byte-order.h */
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