esp-idf/components/tcpip_adapter/include/tcpip_adapter.h
2016-09-29 10:55:52 +08:00

389 lines
12 KiB
C

// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef _TCPIP_ADAPTER_H_
#define _TCPIP_ADAPTER_H_
/**
* @brief TCPIP adapter library
*
* The aim of this adapter is to provide an abstract layer upon TCPIP stack.
* With this layer, switch to other TCPIP stack is possible and easy in esp-idf.
*
* If users want to use other TCPIP stack, all those functions should be implemented
* by using the specific APIs of that stack. The macros in CONFIG_TCPIP_LWIP should be
* re-defined.
*
* tcpip_adapter_init should be called in the start of app_main for only once.
*
* Currently most adapter APIs are called in event_default_handlers.c.
*
* We recommend users only use set/get IP APIs, DHCP server/client APIs,
* get free station list APIs in application side. Other APIs are used in esp-idf internal,
* otherwise the state maybe wrong.
*
* TODO: ipv6 support will be added, use menuconfig to disable CONFIG_TCPIP_LWIP
*/
#include <stdint.h>
#include "rom/queue.h"
#include "esp_wifi_types.h"
#define CONFIG_TCPIP_LWIP 1
#define CONFIG_DHCP_STA_LIST 1
#if CONFIG_TCPIP_LWIP
#include "lwip/ip_addr.h"
#include "apps/dhcpserver.h"
#ifdef __cplusplus
extern "C" {
#endif
#define IP2STR(ipaddr) ip4_addr1_16(ipaddr), \
ip4_addr2_16(ipaddr), \
ip4_addr3_16(ipaddr), \
ip4_addr4_16(ipaddr)
#define IPSTR "%d.%d.%d.%d"
typedef struct {
ip4_addr_t ip;
ip4_addr_t netmask;
ip4_addr_t gw;
} tcpip_adapter_ip_info_t;
typedef dhcps_lease_t tcpip_adapter_dhcps_lease_t;
#if CONFIG_DHCP_STA_LIST
struct station_list {
STAILQ_ENTRY(station_list) next;
uint8_t mac[6];
ip4_addr_t ip;
};
#endif
#endif
#define ESP_ERR_TCPIP_ADAPTER_BASE 0x5000 // TODO: move base address to esp_err.h
#define ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS ESP_ERR_TCPIP_ADAPTER_BASE + 0x00
#define ESP_ERR_TCPIP_ADAPTER_IF_NOT_READY ESP_ERR_TCPIP_ADAPTER_BASE + 0x01
#define ESP_ERR_TCPIP_ADAPTER_DHCPC_START_FAILED ESP_ERR_TCPIP_ADAPTER_BASE + 0x02
#define ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STARTED ESP_ERR_TCPIP_ADAPTER_BASE + 0x03
#define ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STOPPED ESP_ERR_TCPIP_ADAPTER_BASE + 0x04
#define ESP_ERR_TCPIP_ADAPTER_NO_MEM ESP_ERR_TCPIP_ADAPTER_BASE + 0x05
#define ESP_ERR_TCPIP_ADAPTER_DHCP_NOT_STOPPED ESP_ERR_TCPIP_ADAPTER_BASE + 0x06
/* TODO: add Ethernet interface */
typedef enum {
TCPIP_ADAPTER_IF_STA = 0, /**< ESP32 station interface */
TCPIP_ADAPTER_IF_AP, /**< ESP32 soft-AP interface */
TCPIP_ADAPTER_IF_MAX
} tcpip_adapter_if_t;
/* status of DHCP client or DHCP server */
typedef enum {
TCPIP_ADAPTER_DHCP_INIT = 0, /**< DHCP client/server in initial state */
TCPIP_ADAPTER_DHCP_STARTED, /**< DHCP client/server already been started */
TCPIP_ADAPTER_DHCP_STOPPED, /**< DHCP client/server already been stopped */
TCPIP_ADAPTER_DHCP_STATUS_MAX
} tcpip_adapter_dhcp_status_t;
/* set the option mode for DHCP client or DHCP server */
typedef enum{
TCPIP_ADAPTER_OP_START = 0,
TCPIP_ADAPTER_OP_SET, /**< set option mode */
TCPIP_ADAPTER_OP_GET, /**< get option mode */
TCPIP_ADAPTER_OP_MAX
} tcpip_adapter_option_mode_t;
typedef enum{
TCPIP_ADAPTER_ROUTER_SOLICITATION_ADDRESS = 32, /**< solicitation router address */
TCPIP_ADAPTER_REQUESTED_IP_ADDRESS = 50, /**< request IP address pool */
TCPIP_ADAPTER_IP_ADDRESS_LEASE_TIME = 51, /**< request IP address lease time */
TCPIP_ADAPTER_IP_REQUEST_RETRY_TIME = 52, /**< request IP address retry counter */
} tcpip_adapter_option_id_t;
/**
* @brief Initialize tcpip adpater
*
* This will initialize TCPIP stack inside.
*/
void tcpip_adapter_init(void);
/**
* @brief Start an interface with specific MAC and IP
*
* softAP or station interface will be initialized, connect WiFi stack with TCPIP stack.
*
* For softAP interface, DHCP server will be started automatically.
*
* @param[in] tcpip_if: the interface which we will start
* @param[in] mac: set MAC address of this interface
* @param[in] ip_info: set IP address of this interface
*
* @return ESP_OK
* ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS
* ESP_ERR_NO_MEM
*/
esp_err_t tcpip_adapter_start(tcpip_adapter_if_t tcpip_if, uint8_t *mac, tcpip_adapter_ip_info_t *ip_info);
/**
* @brief Stop an interface
*
* The interface will be cleanup in this API, if DHCP server/client are started, will be stopped.
*
* @param[in] tcpip_if: the interface which will be started
*
* @return ESP_OK
* ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS
* ESP_ERR_TCPIP_ADAPTER_IF_NOT_READY
*/
esp_err_t tcpip_adapter_stop(tcpip_adapter_if_t tcpip_if);
/**
* @brief Bring up an interface
*
* Only station interface need to be brought up, since station interface will be shut down when disconnect.
*
* @param[in] tcpip_if: the interface which will be up
*
* @return ESP_OK
* ESP_ERR_TCPIP_ADAPTER_IF_NOT_READY
*/
esp_err_t tcpip_adapter_up(tcpip_adapter_if_t tcpip_if);
/**
* @brief Shut down an interface
*
* Only station interface need to be shut down, since station interface will be brought up when connect.
*
* @param[in] tcpip_if: the interface which will be down
*
* @return ESP_OK
* ESP_ERR_TCPIP_ADAPTER_IF_NOT_READY
*/
esp_err_t tcpip_adapter_down(tcpip_adapter_if_t tcpip_if);
/**
* @brief Get interface's IP information
*
* There has an IP information copy in adapter library, if interface is up, get IP information from
* interface, otherwise get from copy.
*
* @param[in] tcpip_if: the interface which we want to get IP information
* @param[out] ip_info: If successful, IP information will be returned in this argument.
*
* @return ESP_OK
* ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS
*/
esp_err_t tcpip_adapter_get_ip_info(tcpip_adapter_if_t tcpip_if, tcpip_adapter_ip_info_t *ip_info);
/**
* @brief Set interface's IP information
*
* There has an IP information copy in adapter library, if interface is up, also set interface's IP.
* DHCP client/server should be stopped before set new IP information.
*
* This function is mainly used for setting static IP.
*
* @param[in] tcpip_if: the interface which we want to set IP information
* @param[in] ip_info: If successful, IP information will be returned in this argument.
*
* @return ESP_OK
* ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS
*/
esp_err_t tcpip_adapter_set_ip_info(tcpip_adapter_if_t tcpip_if, tcpip_adapter_ip_info_t *ip_info);
#if 0
esp_err_t tcpip_adapter_get_mac(tcpip_adapter_if_t tcpip_if, uint8_t *mac);
esp_err_t tcpip_adapter_set_mac(tcpip_adapter_if_t tcpip_if, uint8_t *mac);
#endif
/**
* @brief Get DHCP server's status
*
* @param[in] tcpip_if: the interface which we will get status of DHCP server
* @param[out] status: If successful, the status of DHCP server will be return in this argument.
*
* @return ESP_OK
*/
esp_err_t tcpip_adapter_dhcps_get_status(tcpip_adapter_if_t tcpip_if, tcpip_adapter_dhcp_status_t *status);
/**
* @brief Set or Get DHCP server's option
*
* @param[in] opt_op: option operate type, 1 for SET, 2 for GET.
* @param[in] opt_id: option index, 32 for ROUTER, 50 for IP POLL, 51 for LEASE TIME, 52 for REQUEST TIME
* @param[in] opt_val: option parameter
* @param[in] opt_len: option length
*
* @return ESP_OK
* ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS
* ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STOPPED
* ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STARTED
*/
esp_err_t tcpip_adapter_dhcps_option(tcpip_adapter_option_mode_t opt_op, tcpip_adapter_option_id_t opt_id, void *opt_val, uint32_t opt_len);
/**
* @brief Start DHCP server
*
* @note Currently DHCP server is bind to softAP interface.
*
* @param[in] tcpip_if: the interface which we will start DHCP server
*
* @return ESP_OK
* ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS
* ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STARTED
*/
esp_err_t tcpip_adapter_dhcps_start(tcpip_adapter_if_t tcpip_if);
/**
* @brief Stop DHCP server
*
* @note Currently DHCP server is bind to softAP interface.
*
* @param[in] tcpip_if: the interface which we will stop DHCP server
*
* @return ESP_OK
* ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS
* ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STOPED
* ESP_ERR_TCPIP_ADAPTER_IF_NOT_READY
*/
esp_err_t tcpip_adapter_dhcps_stop(tcpip_adapter_if_t tcpip_if);
/**
* @brief Get DHCP client status
*
* @param[in] tcpip_if: the interface which we will get status of DHCP client
* @param[out] status: If successful, the status of DHCP client will be return in this argument.
*
* @return ESP_OK
*/
esp_err_t tcpip_adapter_dhcpc_get_status(tcpip_adapter_if_t tcpip_if, tcpip_adapter_dhcp_status_t *status);
/**
* @brief Set or Get DHCP client's option
*
* @note This function is not implement now.
*
* @param[in] opt_op: option operate type, 1 for SET, 2 for GET.
* @param[in] opt_id: option index, 32 for ROUTER, 50 for IP POLL, 51 for LEASE TIME, 52 for REQUEST TIME
* @param[in] opt_val: option parameter
* @param[in] opt_len: option length
*
* @return ESP_OK
*/
esp_err_t tcpip_adapter_dhcpc_option(tcpip_adapter_option_mode_t opt_op, tcpip_adapter_option_id_t opt_id, void *opt_val, uint32_t opt_len);
/**
* @brief Start DHCP client
*
* @note Currently DHCP client is bind to station interface.
*
* @param[in] tcpip_if: the interface which we will start DHCP client
*
* @return ESP_OK
* ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS
* ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STARTED
* ESP_ERR_TCPIP_ADAPTER_DHCPC_START_FAILED
*/
esp_err_t tcpip_adapter_dhcpc_start(tcpip_adapter_if_t tcpip_if);
/**
* @brief Stop DHCP client
*
* @note Currently DHCP client is bind to station interface.
*
* @param[in] tcpip_if: the interface which we will stop DHCP client
*
* @return ESP_OK
* ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS
* ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STOPED
* ESP_ERR_TCPIP_ADAPTER_IF_NOT_READY
*/
esp_err_t tcpip_adapter_dhcpc_stop(tcpip_adapter_if_t tcpip_if);
/**
* @brief Get data from station interface
*
* This function should be installed by esp_wifi_reg_rxcb, so WiFi packets will be forward to TCPIP stack.
*
* @param[in] void *buffer: the received data point
* @param[in] uint16_t len: the received data length
* @param[in] void *eb: parameter
*
* @return ESP_OK
*/
esp_err_t tcpip_adapter_sta_input(void *buffer, uint16_t len, void *eb);
/**
* @brief Get data from softAP interface
*
* This function should be installed by esp_wifi_reg_rxcb, so WiFi packets will be forward to TCPIP stack.
*
* @param[in] void *buffer: the received data point
* @param[in] uint16_t len: the received data length
* @param[in] void *eb: parameter
*
* @return ESP_OK
*/
esp_err_t tcpip_adapter_ap_input(void *buffer, uint16_t len, void *eb);
/**
* @brief Get WiFi interface index
*
* Get WiFi interface from TCPIP interface struct pointer.
*
* @param[in] void *dev: adapter interface
*
* @return WIFI_IF_STA
* WIFI_IF_AP
* WIFI_IF_MAX
*/
wifi_interface_t tcpip_adapter_get_wifi_if(void *dev);
/**
* @brief Get the station information list
*
* @note This function should be called in AP mode and dhcp server started, and the list should
* be by using tcpip_adapter_free_sta_list.
*
* @param[in] sta_info: station information
* @param[out] sta_list: station information list
*
* @return ESP_OK
* ESP_ERR_TCPIP_ADAPTER_NO_MEM
* ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS
*/
esp_err_t tcpip_adapter_get_sta_list(struct station_info *sta_info, struct station_list **sta_list);
/**
* @brief Free the station information list's memory
*
* @param sta_list: station information list
*
* @return ESP_OK
*/
esp_err_t tcpip_adapter_free_sta_list(struct station_list *sta_list);
#ifdef __cplusplus
}
#endif
#endif /* _TCPIP_ADAPTER_H_ */