281     uint16_t header;  in InFrameEndSegment()  local
291         header = ReadUint16At(mWriteSegmentHead, mWriteDirection);  in InFrameEndSegment()
292         header |= (segmentLength & kSegmentHeaderLengthMask);  in InFrameEndSegment()
293         header |= aSegmentHeaderFlags;  in InFrameEndSegment()
294         WriteUint16At(mWriteSegmentHead, header, mWriteDirection);  in InFrameEndSegment()
558     uint16_t header;  in OutFramePrepareSegment()  local
569         header = ReadUint16At(mReadSegmentHead, mReadDirection);  in OutFramePrepareSegment()
572         if (header & kSegmentHeaderNewFrameFlag)  in OutFramePrepareSegment()
579 …mReadSegmentTail = GetUpdatedBufPtr(mReadSegmentHead, kSegmentHeaderSize + (header & kSegmentHeade…  in OutFramePrepareSegment()
621     uint16_t header;  in OutFramePrepareMessage()  local
624     header = ReadUint16At(mReadSegmentHead, mReadDirection);  in OutFramePrepareMessage()
627     EXPECT((header & kSegmentHeaderMessageIndicatorFlag) != 0, error = OT_ERROR_NOT_FOUND);  in OutFramePrepareMessage()
783     uint16_t header;  in OutFrameRemove()  local
802         header = ReadUint16At(bufPtr, mReadDirection);  in OutFrameRemove()
806         if (header & kSegmentHeaderNewFrameFlag)  in OutFrameRemove()
816         if (header & kSegmentHeaderMessageIndicatorFlag)  in OutFrameRemove()
829 …bufPtr = GetUpdatedBufPtr(bufPtr, kSegmentHeaderSize + (header & kSegmentHeaderLengthMask), mReadD…  in OutFrameRemove()
880     uint16_t header;  in OutFrameGetLength()  local
902         header = ReadUint16At(bufPtr, mReadDirection);  in OutFrameGetLength()
906         if (header & kSegmentHeaderNewFrameFlag)  in OutFrameGetLength()
916         if (header & kSegmentHeaderMessageIndicatorFlag)  in OutFrameGetLength()
929         frameLength += (header & kSegmentHeaderLengthMask);  in OutFrameGetLength()
932 …bufPtr = GetUpdatedBufPtr(bufPtr, kSegmentHeaderSize + (header & kSegmentHeaderLengthMask), mReadD…  in OutFrameGetLength()