ot::Ip6::PadOption class

Syntax

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Summary

Declaration

from ip6_headers.hpp:514

class PadOption : public Option, private Clearable<PadOption> { friend class Clearable<PadOption>; public: void InitForPadSize(uint8_t aPadSize); Error InitToPadHeaderWithSize(uint16_t aHeaderSize); private: static constexpr uint8_t kMaxLength = 5; uint8_t mPads[kMaxLength]; };

Fields

Field

Declared as

ot::Ip6::PadOption::kMaxLength

ot::Ip6::PadOption::mPads

uint8_t[kMaxLength]

Methods

InitForPadSize()

Initializes the Pad Option for a given total Pad size. The @p aPadSize MUST be from range 1-7. Otherwise the behavior of this method is undefined.

InitToPadHeaderWithSize()

Initializes the Pad Option for padding an IPv6 Extension header with a given current size. The Extension Header Length is in 8-bytes unit, so the total size should be a multiple of 8. This method determines the Pad Option size needed for appending to Extension Header based on it current size @p aHeaderSize so to make it a multiple of 8. This method returns `kErrorAlready` when the @p aHeaderSize is already a multiple of 8 (i.e., no padding is needed).