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/*
* Embedded Linux library
* Copyright (C) 2018 Intel Corporation
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#ifndef __ELL_DHCP_H
#define __ELL_DHCP_H
#include <stdbool.h>
#ifdef __cplusplus
extern "C" {
#endif
struct l_dhcp_client;
struct l_dhcp_lease;
struct l_netlink;
struct l_dhcp_server;
/* RFC 2132 */
enum l_dhcp_option {
L_DHCP_OPTION_SUBNET_MASK = 1, /* Section 3.3 */
L_DHCP_OPTION_ROUTER = 3, /* Section 3.5 */
L_DHCP_OPTION_DOMAIN_NAME_SERVER = 6, /* Section 3.8 */
L_DHCP_OPTION_HOST_NAME = 12, /* Section 3.14 */
L_DHCP_OPTION_DOMAIN_NAME = 15, /* Section 3.17 */
L_DHCP_OPTION_BROADCAST_ADDRESS = 28, /* Section 5.3 */
L_DHCP_OPTION_NTP_SERVERS = 42, /* Section 8.3 */
L_DHCP_OPTION_REQUESTED_IP_ADDRESS = 50, /* Section 9.1 */
L_DHCP_OPTION_IP_ADDRESS_LEASE_TIME = 51, /* Section 9.2 */
L_DHCP_OPTION_RENEWAL_T1_TIME = 58, /* Section 9.11 */
L_DHCP_OPTION_REBINDING_T2_TIME = 59, /* Section 9.12 */
L_DHCP_OPTION_SERVER_IDENTIFIER = 54, /* Section 9.7 */
};
enum l_dhcp_client_event {
L_DHCP_CLIENT_EVENT_LEASE_OBTAINED = 0,
L_DHCP_CLIENT_EVENT_IP_CHANGED,
L_DHCP_CLIENT_EVENT_LEASE_EXPIRED,
L_DHCP_CLIENT_EVENT_LEASE_RENEWED,
L_DHCP_CLIENT_EVENT_NO_LEASE,
L_DHCP_CLIENT_EVENT_MAX_ATTEMPTS_REACHED,
};
enum l_dhcp_server_event {
L_DHCP_SERVER_EVENT_NEW_LEASE,
L_DHCP_SERVER_EVENT_LEASE_EXPIRED,
};
typedef void (*l_dhcp_client_event_cb_t)(struct l_dhcp_client *client,
enum l_dhcp_client_event event,
void *userdata);
typedef void (*l_dhcp_debug_cb_t)(const char *str, void *user_data);
typedef void (*l_dhcp_destroy_cb_t)(void *userdata);
typedef void (*l_dhcp_server_event_cb_t)(struct l_dhcp_server *server,
enum l_dhcp_server_event event,
void *user_data,
const struct l_dhcp_lease *lease);
struct l_dhcp_client *l_dhcp_client_new(uint32_t ifindex);
bool l_dhcp_client_add_request_option(struct l_dhcp_client *client,
uint8_t option);
void l_dhcp_client_destroy(struct l_dhcp_client *client);
bool l_dhcp_client_set_address(struct l_dhcp_client *client, uint8_t type,
const uint8_t *addr, size_t addr_len);
bool l_dhcp_client_set_interface_name(struct l_dhcp_client *client,
const char *ifname);
bool l_dhcp_client_set_hostname(struct l_dhcp_client *client,
const char *hostname);
bool l_dhcp_client_set_rtnl(struct l_dhcp_client *client,
struct l_netlink *rtnl);
bool l_dhcp_client_set_max_attempts(struct l_dhcp_client *client,
uint8_t attempts);
const struct l_dhcp_lease *l_dhcp_client_get_lease(
const struct l_dhcp_client *client);
bool l_dhcp_client_start(struct l_dhcp_client *client);
bool l_dhcp_client_stop(struct l_dhcp_client *client);
bool l_dhcp_client_set_event_handler(struct l_dhcp_client *client,
l_dhcp_client_event_cb_t handler,
void *userdata,
l_dhcp_destroy_cb_t destroy);
bool l_dhcp_client_set_debug(struct l_dhcp_client *client,
l_dhcp_debug_cb_t function,
void *user_data, l_dhcp_destroy_cb_t destroy,
int priority);
char *l_dhcp_lease_get_address(const struct l_dhcp_lease *lease);
uint32_t l_dhcp_lease_get_address_u32(const struct l_dhcp_lease *lease);
char *l_dhcp_lease_get_gateway(const struct l_dhcp_lease *lease);
uint32_t l_dhcp_lease_get_gateway_u32(const struct l_dhcp_lease *lease);
char *l_dhcp_lease_get_netmask(const struct l_dhcp_lease *lease);
uint32_t l_dhcp_lease_get_netmask_u32(const struct l_dhcp_lease *lease);
uint32_t l_dhcp_lease_get_prefix_length(const struct l_dhcp_lease *lease);
char *l_dhcp_lease_get_broadcast(const struct l_dhcp_lease *lease);
char *l_dhcp_lease_get_server_id(const struct l_dhcp_lease *lease);
const uint8_t *l_dhcp_lease_get_server_mac(const struct l_dhcp_lease *lease);
char **l_dhcp_lease_get_dns(const struct l_dhcp_lease *lease);
char *l_dhcp_lease_get_domain_name(const struct l_dhcp_lease *lease);
const uint8_t *l_dhcp_lease_get_mac(const struct l_dhcp_lease *lease);
uint32_t l_dhcp_lease_get_t1(const struct l_dhcp_lease *lease);
uint32_t l_dhcp_lease_get_t2(const struct l_dhcp_lease *lease);
uint32_t l_dhcp_lease_get_lifetime(const struct l_dhcp_lease *lease);
uint64_t l_dhcp_lease_get_start_time(const struct l_dhcp_lease *lease);
struct l_dhcp_server *l_dhcp_server_new(int ifindex);
void l_dhcp_server_destroy(struct l_dhcp_server *server);
bool l_dhcp_server_start(struct l_dhcp_server *server);
bool l_dhcp_server_stop(struct l_dhcp_server *server);
bool l_dhcp_server_set_ip_range(struct l_dhcp_server *server,
const char *start_ip,
const char *end_ip);
bool l_dhcp_server_set_debug(struct l_dhcp_server *server,
l_dhcp_debug_cb_t function,
void *user_data, l_dhcp_destroy_cb_t destroy);
bool l_dhcp_server_set_event_handler(struct l_dhcp_server *server,
l_dhcp_server_event_cb_t handler,
void *user_data,
l_dhcp_destroy_cb_t destroy);
bool l_dhcp_server_set_lease_time(struct l_dhcp_server *server,
unsigned int lease_time);
bool l_dhcp_server_set_interface_name(struct l_dhcp_server *server,
const char *ifname);
bool l_dhcp_server_set_ip_address(struct l_dhcp_server *server,
const char *ip);
bool l_dhcp_server_set_netmask(struct l_dhcp_server *server, const char *mask);
bool l_dhcp_server_set_gateway(struct l_dhcp_server *server, const char *ip);
bool l_dhcp_server_set_dns(struct l_dhcp_server *server, char **dns);
void l_dhcp_server_set_authoritative(struct l_dhcp_server *server,
bool authoritative);
void l_dhcp_server_set_enable_rapid_commit(struct l_dhcp_server *server,
bool enable);
struct l_dhcp_lease *l_dhcp_server_discover(struct l_dhcp_server *server,
uint32_t requested_ip_opt,
const uint8_t *client_id,
const uint8_t *mac);
bool l_dhcp_server_request(struct l_dhcp_server *server,
struct l_dhcp_lease *lease);
bool l_dhcp_server_decline(struct l_dhcp_server *server,
struct l_dhcp_lease *lease);
bool l_dhcp_server_release(struct l_dhcp_server *server,
struct l_dhcp_lease *lease);
bool l_dhcp_server_lease_remove(struct l_dhcp_server *server,
struct l_dhcp_lease *lease);
void l_dhcp_server_expire_by_mac(struct l_dhcp_server *server,
const uint8_t *mac);
#ifdef __cplusplus
}
#endif
#endif /* __ELL_DHCP_H */
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