ot::Ip6::Mpl class

Implements MPL message processing.

Syntax

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Summary

Declaration

from ip6_mpl.hpp:153

class Mpl : public InstanceLocator, private NonCopyable { friend class ot::TimeTicker; public: explicit Mpl(Instance &aInstance); void InitOption(MplOption &aOption, const Address &aAddress); Error ProcessOption(Message &aMessage, const OffsetRange &aOffsetRange, const Address &aAddress, bool &aReceive); #if OPENTHREAD_FTD const MessageQueue &GetBufferedMessageSet(void) const { return mBufferedMessageSet; } #endif private: static constexpr uint16_t kNumSeedEntries = OPENTHREAD_CONFIG_MPL_SEED_SET_ENTRIES; static constexpr uint32_t kSeedEntryLifetime = OPENTHREAD_CONFIG_MPL_SEED_SET_ENTRY_LIFETIME; static constexpr uint32_t kSeedEntryLifetimeDt = 1000; static constexpr uint8_t kDataMessageInterval = 64; struct SeedEntry { uint16_t mSeedId; uint8_t mSequence; uint8_t mLifetime; }; void HandleTimeTick(void); Error UpdateSeedSet(uint16_t aSeedId, uint8_t aSequence); SeedEntry mSeedSet[kNumSeedEntries]; uint8_t mSequence; #if OPENTHREAD_FTD static constexpr uint8_t kChildRetransmissions = 0; static constexpr uint8_t kRouterRetransmissions = 2; struct Metadata : public Message::FooterData<Metadata> { void GenerateNextTransmissionTime(TimeMilli aCurrentTime, uint8_t aInterval); TimeMilli mTransmissionTime; uint16_t mSeedId; uint8_t mSequence; uint8_t mTransmissionCount; uint8_t mIntervalOffset; }; uint8_t DetermineMaxRetransmissions(void) const; void HandleRetransmissionTimer(void); void AddBufferedMessage(Message &aMessage, uint16_t aSeedId, uint8_t aSequence); using RetxTimer = TimerMilliIn<Mpl, &Mpl::HandleRetransmissionTimer>; MessageQueue mBufferedMessageSet; RetxTimer mRetransmissionTimer; #endif };

Fields

Field

Declared as

ot::Ip6::Mpl::kNumSeedEntries

ot::Ip6::Mpl::kSeedEntryLifetime

ot::Ip6::Mpl::kSeedEntryLifetimeDt

ot::Ip6::Mpl::kDataMessageInterval

ot::Ip6::Mpl::mSeedSet

SeedEntry[kNumSeedEntries]

ot::Ip6::Mpl::mSequence

uint8_t

ot::Ip6::Mpl::kChildRetransmissions

ot::Ip6::Mpl::kRouterRetransmissions

ot::Ip6::Mpl::mBufferedMessageSet

MessageQueue

ot::Ip6::Mpl::mRetransmissionTimer

RetxTimer

Methods

InitOption()

Initializes the MPL option.

ProcessOption()

Processes an MPL option. When the MPL module acts as an MPL Forwarder it disseminates MPL Data Message using Trickle timer expirations. When acts as an MPL Seed it allows to send the first MPL Data Message directly, then sets up Trickle timer expirations for subsequent retransmissions.