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Commit | Line | Data |
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064af421 | 1 | /* |
4cf5406b | 2 | * Copyright (c) 2008, 2010, 2011, 2013 Nicira, Inc. |
064af421 | 3 | * |
a14bc59f BP |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
064af421 | 7 | * |
a14bc59f BP |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
064af421 | 15 | */ |
10a24935 BP |
16 | #ifndef BYTE_ORDER_H |
17 | #define BYTE_ORDER_H 1 | |
064af421 BP |
18 | |
19 | #include <arpa/inet.h> | |
20 | #include <sys/types.h> | |
965f03d8 | 21 | #include <inttypes.h> |
dbba996b | 22 | #include "openvswitch/types.h" |
064af421 | 23 | |
6506f45c | 24 | #ifndef __CHECKER__ |
ec292d7d | 25 | #ifndef _WIN32 |
dbba996b | 26 | static inline ovs_be64 |
064af421 BP |
27 | htonll(uint64_t n) |
28 | { | |
29 | return htonl(1) == 1 ? n : ((uint64_t) htonl(n) << 32) | htonl(n >> 32); | |
30 | } | |
31 | ||
32 | static inline uint64_t | |
dbba996b | 33 | ntohll(ovs_be64 n) |
064af421 BP |
34 | { |
35 | return htonl(1) == 1 ? n : ((uint64_t) ntohl(n) << 32) | ntohl(n >> 32); | |
36 | } | |
ec292d7d | 37 | #endif /* _WIN32 */ |
6506f45c BP |
38 | #else |
39 | /* Making sparse happy with these functions also makes them unreadable, so | |
40 | * don't bother to show it their implementations. */ | |
41 | ovs_be64 htonll(uint64_t); | |
42 | uint64_t ntohll(ovs_be64); | |
43 | #endif | |
064af421 | 44 | |
97025b23 JS |
45 | static inline uint32_t |
46 | uint32_byteswap(uint32_t crc) { | |
47 | return (((crc & 0x000000ff) << 24) | | |
48 | ((crc & 0x0000ff00) << 8) | | |
49 | ((crc & 0x00ff0000) >> 8) | | |
50 | ((crc & 0xff000000) >> 24)); | |
51 | } | |
97025b23 | 52 | |
965f03d8 BP |
53 | /* These macros may substitute for htons(), htonl(), and htonll() in contexts |
54 | * where function calls are not allowed, such as case labels. They should not | |
55 | * be used elsewhere because all of them evaluate their argument many times. */ | |
6506f45c BP |
56 | #if defined(WORDS_BIGENDIAN) || __CHECKER__ |
57 | #define CONSTANT_HTONS(VALUE) ((OVS_FORCE ovs_be16) ((VALUE) & 0xffff)) | |
58 | #define CONSTANT_HTONL(VALUE) ((OVS_FORCE ovs_be32) ((VALUE) & 0xffffffff)) | |
59 | #define CONSTANT_HTONLL(VALUE) \ | |
60 | ((OVS_FORCE ovs_be64) ((VALUE) & UINT64_C(0xffffffffffffffff))) | |
965f03d8 BP |
61 | #else |
62 | #define CONSTANT_HTONS(VALUE) \ | |
dbba996b BP |
63 | (((((ovs_be16) (VALUE)) & 0xff00) >> 8) | \ |
64 | ((((ovs_be16) (VALUE)) & 0x00ff) << 8)) | |
965f03d8 | 65 | #define CONSTANT_HTONL(VALUE) \ |
dbba996b BP |
66 | (((((ovs_be32) (VALUE)) & 0x000000ff) << 24) | \ |
67 | ((((ovs_be32) (VALUE)) & 0x0000ff00) << 8) | \ | |
68 | ((((ovs_be32) (VALUE)) & 0x00ff0000) >> 8) | \ | |
69 | ((((ovs_be32) (VALUE)) & 0xff000000) >> 24)) | |
965f03d8 | 70 | #define CONSTANT_HTONLL(VALUE) \ |
dbba996b BP |
71 | (((((ovs_be64) (VALUE)) & UINT64_C(0x00000000000000ff)) << 56) | \ |
72 | ((((ovs_be64) (VALUE)) & UINT64_C(0x000000000000ff00)) << 40) | \ | |
73 | ((((ovs_be64) (VALUE)) & UINT64_C(0x0000000000ff0000)) << 24) | \ | |
74 | ((((ovs_be64) (VALUE)) & UINT64_C(0x00000000ff000000)) << 8) | \ | |
75 | ((((ovs_be64) (VALUE)) & UINT64_C(0x000000ff00000000)) >> 8) | \ | |
76 | ((((ovs_be64) (VALUE)) & UINT64_C(0x0000ff0000000000)) >> 24) | \ | |
77 | ((((ovs_be64) (VALUE)) & UINT64_C(0x00ff000000000000)) >> 40) | \ | |
78 | ((((ovs_be64) (VALUE)) & UINT64_C(0xff00000000000000)) >> 56)) | |
965f03d8 BP |
79 | #endif |
80 | ||
419681da JR |
81 | #if WORDS_BIGENDIAN |
82 | #define BYTES_TO_BE32(B1, B2, B3, B4) \ | |
83 | (OVS_FORCE ovs_be32)((uint32_t)(B1) << 24 | (B2) << 16 | (B3) << 8 | (B4)) | |
84 | #define BE16S_TO_BE32(B1, B2) \ | |
85 | (OVS_FORCE ovs_be32)((uint32_t)(B1) << 16 | (B2)) | |
86 | #else | |
87 | #define BYTES_TO_BE32(B1, B2, B3, B4) \ | |
88 | (OVS_FORCE ovs_be32)((uint32_t)(B1) | (B2) << 8 | (B3) << 16 | (B4) << 24) | |
89 | #define BE16S_TO_BE32(B1, B2) \ | |
90 | (OVS_FORCE ovs_be32)((uint32_t)(B1) | (B2) << 16) | |
91 | #endif | |
92 | ||
10a24935 | 93 | #endif /* byte-order.h */ |