155 lines
5.7 KiB
C
155 lines
5.7 KiB
C
/*
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* Copyright (c) 2020 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <string.h>
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#include <zephyr/sys/util.h>
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#define BT_MESH_BLOB_OP_XFER_GET BT_MESH_MODEL_OP_2(0x83, 0x00)
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#define BT_MESH_BLOB_OP_XFER_START BT_MESH_MODEL_OP_2(0x83, 0x01)
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#define BT_MESH_BLOB_OP_XFER_CANCEL BT_MESH_MODEL_OP_2(0x83, 0x02)
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#define BT_MESH_BLOB_OP_XFER_STATUS BT_MESH_MODEL_OP_2(0x83, 0x03)
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#define BT_MESH_BLOB_OP_BLOCK_GET BT_MESH_MODEL_OP_2(0x83, 0x05)
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#define BT_MESH_BLOB_OP_BLOCK_START BT_MESH_MODEL_OP_2(0x83, 0x04)
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#define BT_MESH_BLOB_OP_CHUNK BT_MESH_MODEL_OP_1(0x66)
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#define BT_MESH_BLOB_OP_BLOCK_STATUS BT_MESH_MODEL_OP_1(0x67)
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#define BT_MESH_BLOB_OP_BLOCK_REPORT BT_MESH_MODEL_OP_1(0x68)
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#define BT_MESH_BLOB_OP_INFO_GET BT_MESH_MODEL_OP_2(0x83, 0x06)
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#define BT_MESH_BLOB_OP_INFO_STATUS BT_MESH_MODEL_OP_2(0x83, 0x07)
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#define BLOB_BLOCK_NOT_SET 0xffff
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#define BLOB_CHUNK_SDU_OVERHEAD \
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(BT_MESH_MODEL_OP_LEN(BT_MESH_BLOB_OP_CHUNK) + 2 + BT_MESH_MIC_SHORT)
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#define BLOB_CHUNK_SIZE_MAX(sdu_max) ((sdu_max) - BLOB_CHUNK_SDU_OVERHEAD)
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#define BLOB_CHUNK_SDU_LEN(chunk_size) (BLOB_CHUNK_SDU_OVERHEAD + (chunk_size))
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#if CONFIG_BT_MESH_ALIGN_CHUNK_SIZE_TO_MAX_SEGMENT || \
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CONFIG_BT_MESH_RX_BLOB_CHUNK_SIZE > BLOB_CHUNK_SIZE_MAX(BT_MESH_RX_SDU_MAX)
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#define BLOB_RX_CHUNK_SIZE BLOB_CHUNK_SIZE_MAX(BT_MESH_RX_SDU_MAX)
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#else
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#define BLOB_RX_CHUNK_SIZE CONFIG_BT_MESH_RX_BLOB_CHUNK_SIZE
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#endif
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#if CONFIG_BT_MESH_ALIGN_CHUNK_SIZE_TO_MAX_SEGMENT || \
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CONFIG_BT_MESH_TX_BLOB_CHUNK_SIZE > BLOB_CHUNK_SIZE_MAX(BT_MESH_TX_SDU_MAX)
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#define BLOB_TX_CHUNK_SIZE BLOB_CHUNK_SIZE_MAX(BT_MESH_TX_SDU_MAX)
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#else
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#define BLOB_TX_CHUNK_SIZE CONFIG_BT_MESH_TX_BLOB_CHUNK_SIZE
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#endif
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/* Utility macros for calculating log2 of a number at compile time.
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* Used to determine the log2 representation of the block size, which
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* is configured as a raw number, but encoded as log2.
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*
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* The macros expand to a series of ternary expressions, effectively
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* searching through power of twos until a match is found.
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* According to MshMBTv1.0, the block size cannot be larger than 2^20,
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* so we'll stop the search at 20.
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*/
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#define _BLOB_LOG_2_CEIL(l, x) ((x) <= (1U << l)) ? l :
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#define _BLOB_LOG_2_FLOOR(l, x) ((x) < (1U << (l + 1))) ? l :
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#define BLOB_BLOCK_SIZE_LOG_CEIL(x) (LISTIFY(20, _BLOB_LOG_2_CEIL, (), x) 20)
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#define BLOB_BLOCK_SIZE_LOG_FLOOR(x) (LISTIFY(20, _BLOB_LOG_2_FLOOR, (), x) 20)
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/* Log2 representation of the minimum block size */
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#define BLOB_BLOCK_SIZE_LOG_MIN BLOB_BLOCK_SIZE_LOG_CEIL(CONFIG_BT_MESH_BLOB_BLOCK_SIZE_MIN)
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/* Log2 representation of the maximum block size */
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#define BLOB_BLOCK_SIZE_LOG_MAX BLOB_BLOCK_SIZE_LOG_FLOOR(CONFIG_BT_MESH_BLOB_BLOCK_SIZE_MAX)
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#if defined(CONFIG_BT_MESH_BLOB_SRV)
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#define BLOB_BLOCK_REPORT_STATUS_MSG_MAXLEN ( \
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MAX(sizeof(((struct bt_mesh_blob_block *)0)->missing), \
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CONFIG_BT_MESH_BLOB_SRV_PULL_REQ_COUNT * 3))
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#define BLOB_BLOCK_STATUS_MSG_MAXLEN (5 + \
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MAX(sizeof(((struct bt_mesh_blob_block *)0)->missing), \
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CONFIG_BT_MESH_BLOB_SRV_PULL_REQ_COUNT * 3))
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#else
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#define BLOB_BLOCK_REPORT_STATUS_MSG_MAXLEN sizeof(((struct bt_mesh_blob_srv *)0)->block.missing)
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#define BLOB_BLOCK_STATUS_MSG_MAXLEN (5 + sizeof(((struct bt_mesh_blob_srv *)0)->block.missing))
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#endif
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#define BLOB_XFER_STATUS_MSG_MAXLEN (17 + sizeof(((struct bt_mesh_blob_srv *)0)->state.blocks))
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enum bt_mesh_blob_chunks_missing {
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BT_MESH_BLOB_CHUNKS_MISSING_ALL,
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BT_MESH_BLOB_CHUNKS_MISSING_NONE,
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BT_MESH_BLOB_CHUNKS_MISSING_SOME,
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BT_MESH_BLOB_CHUNKS_MISSING_ENCODED,
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};
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static inline size_t blob_block_size(size_t xfer_size, uint8_t block_size_log,
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uint32_t idx)
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{
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if (((idx + 1U) << block_size_log) <= xfer_size) {
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return (1U << block_size_log);
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}
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return xfer_size & BIT_MASK(block_size_log);
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}
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static inline void blob_chunk_missing_set(uint8_t *missing_chunks,
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int idx, bool missing)
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{
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WRITE_BIT(missing_chunks[idx / 8], idx % 8, missing);
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}
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static inline bool
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blob_chunk_missing_get(const uint8_t *missing_chunks, int idx)
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{
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return !!(missing_chunks[idx / 8] & BIT(idx % 8));
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}
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static inline void blob_chunk_missing_set_all(struct bt_mesh_blob_block *block)
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{
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size_t bytes = block->chunk_count / 8;
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memset(block->missing, 0xff, bytes);
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if (block->chunk_count % 8) {
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block->missing[bytes] = BIT_MASK(block->chunk_count % 8);
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}
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}
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static inline void blob_chunk_missing_set_none(struct bt_mesh_blob_block *block)
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{
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memset(block->missing, 0, sizeof(block->missing));
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}
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/** @brief Perform a message broadcast to all BLOB Transfer Client Target nodes.
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*
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* Will send to a group or each Target node individually, repeating until
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* all Target nodes have responded or the retry time has run out.
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*
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* @param cli BLOB Transfer Client instance
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* @param ctx Broadcast context
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*/
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void blob_cli_broadcast(struct bt_mesh_blob_cli *cli,
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const struct blob_cli_broadcast_ctx *ctx);
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/** @brief Register that a Target node responded to a broadcast.
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*
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* @param cli BLOB Transfer Client instance
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* @param target Target node that responded.
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*/
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void blob_cli_broadcast_rsp(struct bt_mesh_blob_cli *cli,
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struct bt_mesh_blob_target *target);
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/** @brief Notify the BLOB Transfer Client that the requested transmission is complete.
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*
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* Should be called once for each call to the @ref blob_cli_broadcast_ctx.send
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* callback.
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*
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* @param cli BLOB Transfer Client instance.
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*/
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void blob_cli_broadcast_tx_complete(struct bt_mesh_blob_cli *cli);
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/** @brief Aborts any ongoing BLOB Transfer Client operations.
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*
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* @param cli BLOB Transfer Client instance.
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*/
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void blob_cli_broadcast_abort(struct bt_mesh_blob_cli *cli);
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