dhcpv4.h

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/*
 * Copyright (c) 2016 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_NET_DHCPV4_H_
#define ZEPHYR_INCLUDE_NET_DHCPV4_H_
 
#include <zephyr/sys/slist.h>
#include <zephyr/types.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
enum net_dhcpv4_state {
        NET_DHCPV4_DISABLED,
        NET_DHCPV4_INIT,
        NET_DHCPV4_SELECTING,
        NET_DHCPV4_REQUESTING,
        NET_DHCPV4_RENEWING,
        NET_DHCPV4_REBINDING,
        NET_DHCPV4_BOUND,
} __packed;
 
enum net_dhcpv4_msg_type {
        NET_DHCPV4_MSG_TYPE_DISCOVER    = 1,
        NET_DHCPV4_MSG_TYPE_OFFER       = 2,
        NET_DHCPV4_MSG_TYPE_REQUEST     = 3,
        NET_DHCPV4_MSG_TYPE_DECLINE     = 4,
        NET_DHCPV4_MSG_TYPE_ACK         = 5,
        NET_DHCPV4_MSG_TYPE_NAK         = 6,
        NET_DHCPV4_MSG_TYPE_RELEASE     = 7,
        NET_DHCPV4_MSG_TYPE_INFORM      = 8,
};
 
#ifdef CONFIG_NET_DHCPV4_OPTION_CALLBACKS
 
struct net_dhcpv4_option_callback;
 
typedef void (*net_dhcpv4_option_callback_handler_t)(struct net_dhcpv4_option_callback *cb,
                                                     size_t length,
                                                     enum net_dhcpv4_msg_type msg_type,
                                                     struct net_if *iface);
 
struct net_dhcpv4_option_callback {
        sys_snode_t node;
 
        net_dhcpv4_option_callback_handler_t handler;
 
        uint8_t option;
 
        size_t max_length;
 
        void *data;
};
 
static inline void net_dhcpv4_init_option_callback(struct net_dhcpv4_option_callback *callback,
                                                   net_dhcpv4_option_callback_handler_t handler,
                                                   uint8_t option,
                                                   void *data,
                                                   size_t max_length)
{
        __ASSERT(callback, "Callback pointer should not be NULL");
        __ASSERT(handler, "Callback handler pointer should not be NULL");
        __ASSERT(data, "Data pointer should not be NULL");
 
        callback->handler = handler;
        callback->option = option;
        callback->data = data;
        callback->max_length = max_length;
}
 
int net_dhcpv4_add_option_callback(struct net_dhcpv4_option_callback *cb);
 
int net_dhcpv4_remove_option_callback(struct net_dhcpv4_option_callback *cb);
 
#endif /* CONFIG_NET_DHCPV4_OPTION_CALLBACKS */
 
void net_dhcpv4_start(struct net_if *iface);
 
void net_dhcpv4_stop(struct net_if *iface);
 
void net_dhcpv4_restart(struct net_if *iface);
 
const char *net_dhcpv4_state_name(enum net_dhcpv4_state state);
 
const char *net_dhcpv4_msg_type_name(enum net_dhcpv4_msg_type msg_type);
 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_INCLUDE_NET_DHCPV4_H_ */