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31 * This file provides commissioner steering data calculations
34 #ifndef OTBR_UTILS_STEERING_DATA_HPP_
35 #define OTBR_UTILS_STEERING_DATA_HPP_
37 #include "openthread-br/config.h"
45 * This class represents Steering Data
53 kMaxSizeOfBloomFilter = 16, ///< Max length of bloom filter in bytes.
54 kSizeJoinerId = 8, ///< Size of Extended Joiner ID.
58 * This method initializes the bloom filter.
60 * @param[in] aLength Length of the bloom filter in bytes.
63 void Init(uint8_t aLength);
66 * This method sets all bits in the bloom filter to zero.
69 void Clear(void) { memset(mBloomFilter, 0, sizeof(mBloomFilter)); }
72 * Ths method sets all bits in the bloom filter to one.
75 void Set(void) { memset(mBloomFilter, 0xff, sizeof(mBloomFilter)); }
78 * This method sets bit @p aBit.
80 * @param[in] aBit The bit offset.
83 void SetBit(uint8_t aBit) { mBloomFilter[mLength - 1 - (aBit / 8)] |= 1 << (aBit % 8); }
86 * This method computes the Bloom Filter.
88 * @param[in] aJoinerId Extended address
91 void ComputeBloomFilter(const uint8_t *aJoinerId);
94 * This method computes joiner id from EUI64.
96 * @param[in] aEui64 A pointer to EUI64.
97 * @param[out] aJoinerId A pointer to receive joiner id. This pointer can be the same as @p aEui64.
100 static void ComputeJoinerId(const uint8_t *aEui64, uint8_t *aJoinerId);
103 * This method returns a pointer to the bloom filter.
105 * @returns A pointer to the computed bloom filter.
108 const uint8_t *GetBloomFilter(void) const { return mBloomFilter; }
111 * This method returns the length of the bloom filter.
114 uint8_t GetLength(void) const { return mLength; }
117 uint8_t mBloomFilter[kMaxSizeOfBloomFilter];
121 } /* namespace otbr */
123 #endif // OTBR_UTILS_STEERING_DATA_HPP_