ot::Mac::TxFrame::Info struct

Represents header information.

Syntax

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Summary

Declaration

from mac_frame.hpp:1022

struct Info : public Clearable<Info> { Info(void) { Clear(); } void PrepareHeadersIn(TxFrame &aTxFrame) const; Type mType; Version mVersion; Addresses mAddrs; PanIds mPanIds; SecurityLevel mSecurityLevel; KeyIdMode mKeyIdMode; CommandId mCommandId; bool mSuppressSequence : 1; #if OPENTHREAD_CONFIG_MAC_HEADER_IE_SUPPORT #if OPENTHREAD_CONFIG_TIME_SYNC_ENABLE bool mAppendTimeIe : 1; #endif #if OPENTHREAD_CONFIG_MAC_CSL_RECEIVER_ENABLE bool mAppendCslIe : 1; #endif bool mEmptyPayload : 1; #endif };

Fields

Field

Declared as

ot::Mac::TxFrame::Info::mType

Type

ot::Mac::TxFrame::Info::mVersion

Version

ot::Mac::TxFrame::Info::mAddrs

Addresses

ot::Mac::TxFrame::Info::mPanIds

PanIds

ot::Mac::TxFrame::Info::mSecurityLevel

SecurityLevel

ot::Mac::TxFrame::Info::mKeyIdMode

KeyIdMode

ot::Mac::TxFrame::Info::mCommandId

CommandId

ot::Mac::TxFrame::Info::mSuppressSequence

bool : 1

ot::Mac::TxFrame::Info::mEmptyPayload

bool : 1

Methods

PrepareHeadersIn() const

Prepares MAC headers based on `Info` fields in a given `TxFrame`. This method uses the `Info` structure to construct the MAC address and security headers in @p aTxFrame. It determines the Frame Control Field (FCF), including setting the appropriate frame type, security level, and addressing mode flags. It populates the source and destination addresses and PAN IDs within the MAC header based on the information provided in the `Info` structure. It sets the Ack Request bit in the FCF if the following criteria are met: - A destination address is present - The destination address is not the broadcast address - The frame type is not an ACK frame The header IE entries are prepared based on `mAppendTimeIe` and `mAppendCslIe` flags and the IE Present flag in FCF is determined accordingly. The Frame Pending flag in FCF is not set. It may need to be set separately depending on the specific requirements of the frame being transmitted.