dsm.h

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/*
 * Copyright (C) 2021 ML!PA Consulting GmbH
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once

 
#include <stdint.h>
 
#include "dtls.h"
#include "net/sock/dtls.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#ifndef CONFIG_DSM_PEER_MAX
#define CONFIG_DSM_PEER_MAX   (CONFIG_DTLS_PEER_MAX)
#endif

typedef enum {
    NO_SPACE = -1,
    SESSION_STATE_NONE = 0,
    SESSION_STATE_HANDSHAKE,
    SESSION_STATE_ESTABLISHED
} dsm_state_t;

void dsm_init(void);

dsm_state_t dsm_store(sock_dtls_t *sock, sock_dtls_session_t *session,
                      dsm_state_t new_state, bool restore);

void dsm_remove(sock_dtls_t *sock, sock_dtls_session_t *session);

uint8_t dsm_get_num_maximum_slots(void);

uint8_t dsm_get_num_available_slots(void);

ssize_t dsm_get_least_recently_used_session(sock_dtls_t *sock, sock_dtls_session_t *session);
 
#ifdef __cplusplus
}
#endif