ot::Ip6::Header class

Syntax

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Summary

Declaration

from ip6_headers.hpp:88

class Header : public Clearable<Header> { public: static constexpr uint8_t kPayloadLengthFieldOffset = 4; static constexpr uint8_t kNextHeaderFieldOffset = 6; static constexpr uint8_t kHopLimitFieldOffset = 7; static constexpr uint8_t kSourceFieldOffset = 8; static constexpr uint8_t kDestinationFieldOffset = 24; void InitVersionTrafficClassFlow(void) { SetVerionTrafficClassFlow(kVersTcFlowInit); } bool IsValid(void) const; bool IsVersion6(void) const { return (mVerTcFlow.m8[0] & kVersionMask) == kVersion6; } uint32_t GetVerionTrafficClassFlow(void) const { return BigEndian::HostSwap32(mVerTcFlow.m32); } void SetVerionTrafficClassFlow(uint32_t aVerTcFlow) { mVerTcFlow.m32 = BigEndian::HostSwap32(aVerTcFlow); } uint8_t GetTrafficClass(void) const { return static_cast<uint8_t>((BigEndian::HostSwap16(mVerTcFlow.m16[0]) & kTrafficClassMask) >> kTrafficClassOffset); } void SetTrafficClass(uint8_t aTc) { mVerTcFlow.m16[0] = BigEndian::HostSwap16((BigEndian::HostSwap16(mVerTcFlow.m16[0]) & ~kTrafficClassMask) | ((static_cast<uint16_t>(aTc) << kTrafficClassOffset) & kTrafficClassMask)); } uint8_t GetDscp(void) const { return static_cast<uint8_t>((BigEndian::HostSwap16(mVerTcFlow.m16[0]) & kDscpMask) >> kDscpOffset); } void SetDscp(uint8_t aDscp) { mVerTcFlow.m16[0] = BigEndian::HostSwap16((BigEndian::HostSwap16(mVerTcFlow.m16[0]) & ~kDscpMask) | ((static_cast<uint16_t>(aDscp) << kDscpOffset) & kDscpMask)); } Ecn GetEcn(void) const { return static_cast<Ecn>((mVerTcFlow.m8[1] & kEcnMask) >> kEcnOffset); } void SetEcn(Ecn aEcn) { mVerTcFlow.m8[1] = (mVerTcFlow.m8[1] & ~kEcnMask) | ((aEcn << kEcnOffset) & kEcnMask); } uint32_t GetFlow(void) const { return BigEndian::HostSwap32(mVerTcFlow.m32) & kFlowMask; } void SetFlow(uint32_t aFlow) { mVerTcFlow.m32 = BigEndian::HostSwap32((BigEndian::HostSwap32(mVerTcFlow.m32) & ~kFlowMask) | (aFlow & kFlowMask)); } uint16_t GetPayloadLength(void) const { return BigEndian::HostSwap16(mPayloadLength); } void SetPayloadLength(uint16_t aLength) { mPayloadLength = BigEndian::HostSwap16(aLength); } uint8_t GetNextHeader(void) const { return mNextHeader; } void SetNextHeader(uint8_t aNextHeader) { mNextHeader = aNextHeader; } uint8_t GetHopLimit(void) const { return mHopLimit; } void SetHopLimit(uint8_t aHopLimit) { mHopLimit = aHopLimit; } Address &GetSource(void) { return mSource; } const Address &GetSource(void) const { return mSource; } void SetSource(const Address &aSource) { mSource = aSource; } Address &GetDestination(void) { return mDestination; } const Address &GetDestination(void) const { return mDestination; } void SetDestination(const Address &aDestination) { mDestination = aDestination; } Error ParseFrom(const Message &aMessage); private: static constexpr uint8_t kVersion6 = 0x60; static constexpr uint8_t kVersionMask = 0xf0; static constexpr uint8_t kTrafficClassOffset = 4; static constexpr uint16_t kTrafficClassMask = 0x0ff0; static constexpr uint8_t kDscpOffset = 6; static constexpr uint16_t kDscpMask = 0x0fc0; static constexpr uint8_t kEcnOffset = 4; static constexpr uint8_t kEcnMask = 0x30; static constexpr uint32_t kFlowMask = 0x000fffff; static constexpr uint32_t kVersTcFlowInit = 0x60000000; union OT_TOOL_PACKED_FIELD { uint8_t m8[sizeof(uint32_t) / sizeof(uint8_t)]; uint16_t m16[sizeof(uint32_t) / sizeof(uint16_t)]; uint32_t m32; } mVerTcFlow; uint16_t mPayloadLength; uint8_t mNextHeader; uint8_t mHopLimit; Address mSource; Address mDestination; };