Outline ![]()
Files ![]()
loading (4/5)...
SourceVu![]()
ESP-IDF Framework and Examples![]()
ESP-IDF![]()
components/openthread/openthread/src/core/common/frame_builder.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
/*
* Copyright (c) 2022, The OpenThread Authors.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @file
* This file implements the `FrameBuilder` class.
*/
#include "frame_builder.hpp"
#include <string.h>
#include "common/code_utils.hpp"
#include "common/debug.hpp"
#include "common/encoding.hpp"
#if OPENTHREAD_FTD || OPENTHREAD_MTD
#include "common/message.hpp"
#endif
namespace ot {
void FrameBuilder::Init(void *aBuffer, uint16_t aMaxLength)
{
mBuffer = static_cast<uint8_t *>(aBuffer);
mLength = 0;
mMaxLength = aMaxLength;
}
Error FrameBuilder::AppendUint8(uint8_t aUint8) { return Append<uint8_t>(aUint8); }
Error FrameBuilder::AppendBigEndianUint16(uint16_t aUint16) { return Append<uint16_t>(BigEndian::HostSwap16(aUint16)); }
Error FrameBuilder::AppendBigEndianUint32(uint32_t aUint32) { return Append<uint32_t>(BigEndian::HostSwap32(aUint32)); }
Error FrameBuilder::AppendLittleEndianUint16(uint16_t aUint16)
{
return Append<uint16_t>(LittleEndian::HostSwap16(aUint16));
}
Error FrameBuilder::AppendLittleEndianUint32(uint32_t aUint32)
{
return Append<uint32_t>(LittleEndian::HostSwap32(aUint32));
}
Error FrameBuilder::AppendBytes(const void *aBuffer, uint16_t aLength)
{
Error error = kErrorNone;
VerifyOrExit(CanAppend(aLength), error = kErrorNoBufs);
memcpy(mBuffer + mLength, aBuffer, aLength);
mLength += aLength;
exit:
return error;
}
Error FrameBuilder::AppendMacAddress(const Mac::Address &aMacAddress)
{
Error error = kErrorNone;
switch (aMacAddress.GetType())
{
case Mac::Address::kTypeNone:
break;
case Mac::Address::kTypeShort:
error = AppendLittleEndianUint16(aMacAddress.GetShort());
break;
case Mac::Address::kTypeExtended:
VerifyOrExit(CanAppend(sizeof(Mac::ExtAddress)), error = kErrorNoBufs);
aMacAddress.GetExtended().CopyTo(mBuffer + mLength, Mac::ExtAddress::kReverseByteOrder);
mLength += sizeof(Mac::ExtAddress);
break;
}
exit:
return error;
}
#if OPENTHREAD_FTD || OPENTHREAD_MTD
Error FrameBuilder::AppendBytesFromMessage(const Message &aMessage, uint16_t aOffset, uint16_t aLength)
{
Error error = kErrorNone;
VerifyOrExit(CanAppend(aLength), error = kErrorNoBufs);
SuccessOrExit(error = aMessage.Read(aOffset, mBuffer + mLength, aLength));
mLength += aLength;
exit:
return error;
}
#endif
void *FrameBuilder::AppendLength(uint16_t aLength)
{
void *buffer = nullptr;
VerifyOrExit(CanAppend(aLength));
buffer = &mBuffer[mLength];
mLength += aLength;
exit:
return buffer;
}
void FrameBuilder::WriteBytes(uint16_t aOffset, const void *aBuffer, uint16_t aLength)
{
memcpy(mBuffer + aOffset, aBuffer, aLength);
}
Error FrameBuilder::InsertBytes(uint16_t aOffset, const void *aBuffer, uint16_t aLength)
{
Error error = kErrorNone;
OT_ASSERT(aOffset <= mLength);
VerifyOrExit(CanAppend(aLength), error = kErrorNoBufs);
memmove(mBuffer + aOffset + aLength, mBuffer + aOffset, mLength - aOffset);
memcpy(mBuffer + aOffset, aBuffer, aLength);
mLength += aLength;
exit:
return error;
}
void FrameBuilder::RemoveBytes(uint16_t aOffset, uint16_t aLength)
{
memmove(mBuffer + aOffset, mBuffer + aOffset + aLength, mLength - aOffset - aLength);
mLength -= aLength;
}
} // namespace ot
Details ![]()
Show: from Types: Columns: ![]( "Show Project Names")
![]( "Show Locations")
![]( "Show Referring Symbols")
![]( "Show Scope")
This file uses the notable symbols shown below. Click anywhere in the file to view more details.