conn_ctx.h

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/*
 * Copyright (c) 2018 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */
 
#ifndef BT_CONN_CTX_H_
#define BT_CONN_CTX_H_
 
#include <zephyr/kernel.h>
#include <zephyr/sys/__assert.h>
#include <zephyr/bluetooth/conn.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define BT_CONN_CTX_DEF(_name, _max_clients, _ctx_sz)                          \
        K_MEM_SLAB_DEFINE(_name##_mem_slab,                                    \
                          ROUND_UP(_ctx_sz, CONFIG_BT_CONN_CTX_MEM_BUF_ALIGN), \
                          (_max_clients),                                      \
                          CONFIG_BT_CONN_CTX_MEM_BUF_ALIGN);                   \
        K_MUTEX_DEFINE(_name##_mutex);                                         \
        static struct bt_conn_ctx_lib _CONCAT(_name, _ctx_lib) =                \
        {                                                                      \
                .mem_slab = &_CONCAT(_name, _mem_slab),                         \
                .mutex = &_name##_mutex                                        \
        }
 
struct bt_conn_ctx {
        void *data;
 
        struct bt_conn *conn;
};
 
struct bt_conn_ctx_lib {
        struct bt_conn_ctx ctx[CONFIG_BT_MAX_CONN];
 
        struct k_mutex * const mutex;
 
        struct k_mem_slab * const mem_slab;
};
 
static inline size_t bt_conn_ctx_block_size_get(struct bt_conn_ctx_lib *ctx_lib)
{
        return ctx_lib->mem_slab->info.block_size;
}
 
static inline size_t bt_conn_ctx_count(struct bt_conn_ctx_lib *ctx_lib)
{
        return ARRAY_SIZE(ctx_lib->ctx);
}
 
void *bt_conn_ctx_alloc(struct bt_conn_ctx_lib *ctx_lib, struct bt_conn *conn);
 
int bt_conn_ctx_free(struct bt_conn_ctx_lib *ctx_lib, struct bt_conn *conn);
 
void bt_conn_ctx_free_all(struct bt_conn_ctx_lib *ctx_lib);
 
void *bt_conn_ctx_get(struct bt_conn_ctx_lib *ctx_lib, struct bt_conn *conn);
 
const struct bt_conn_ctx *bt_conn_ctx_get_by_id(struct bt_conn_ctx_lib *ctx_lib, uint8_t id);
 
void bt_conn_ctx_release(struct bt_conn_ctx_lib *ctx_lib, void *data);
 
#ifdef __cplusplus
}
#endif
 
#endif /* BT_CONN_CTX_H_ */