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ot::Ip6::FragmentHeader class
Syntax
class FragmentHeader
{
public:
void Init(void)
{
mReserved = 0;
mOffsetMore = 0;
mIdentification = 0;
}
uint8_t GetNextHeader(void) const { return mNextHeader; }
void SetNextHeader(uint8_t aNextHeader) { mNextHeader = aNextHeader; }
uint16_t GetOffset(void) const { return (BigEndian::HostSwap16(mOffsetMore) & kOffsetMask) >> kOffsetOffset; }
void SetOffset(uint16_t aOffset)
{
uint16_t tmp = BigEndian::HostSwap16(mOffsetMore);
tmp = (tmp & ~kOffsetMask) | ((aOffset << kOffsetOffset) & kOffsetMask);
mOffsetMore = BigEndian::HostSwap16(tmp);
}
bool IsMoreFlagSet(void) const { return BigEndian::HostSwap16(mOffsetMore) & kMoreFlag; }
void ClearMoreFlag(void) { mOffsetMore = BigEndian::HostSwap16(BigEndian::HostSwap16(mOffsetMore) & ~kMoreFlag); }
void SetMoreFlag(void) { mOffsetMore = BigEndian::HostSwap16(BigEndian::HostSwap16(mOffsetMore) | kMoreFlag); }
uint32_t GetIdentification(void) const { return mIdentification; }
void SetIdentification(uint32_t aIdentification) { mIdentification = aIdentification; }
static inline uint16_t MakeDivisibleByEight(uint16_t aLength) { return aLength & 0xfff8; }
static inline uint16_t FragmentOffsetToBytes(uint16_t aOffset) { return static_cast<uint16_t>(aOffset << 3); }
static inline uint16_t BytesToFragmentOffset(uint16_t aOffset) { return aOffset >> 3; }
private:
static constexpr uint8_t kOffsetOffset = 3;
static constexpr uint16_t kOffsetMask = 0xfff8;
static constexpr uint16_t kMoreFlag = 1;
uint8_t mNextHeader;
uint8_t mReserved;
uint16_t mOffsetMore;
uint32_t mIdentification;
};
Fields
Field
Declared as