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https://github.com/espressif/esp-idf.git
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b2af4d9689
linux/lwip: Wrap some IO posix functions * to workaourd the FreeRTOS EINTR issue (when building without lwip) * to correctly choose the sub-system based on fd (when building with lwip) -- passing control to either linux/system or to lwip This commit also addapts tapio-if to provide DHCP client by default and configurable settings for static IP
87 lines
2.8 KiB
C
87 lines
2.8 KiB
C
/*
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* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "esp_err.h"
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#include "esp_netif.h" // esp-netif
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#include "tapio.h" // esp-netif's driver side
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#include "lwip/tapif.h" // esp-netif's network stack side
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#include "esp_log.h"
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#if CONFIG_EXAMPLE_CONNECT_WAIT_FOR_IP
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#include "esp_event.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/event_groups.h"
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static const char *TAG = "linux_connect";
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static EventGroupHandle_t s_events;
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static void event_handler(void* arg, esp_event_base_t event_base, int32_t event_id, void* event_data)
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{
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xEventGroupSetBits(s_events, 1);
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}
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#endif // CONFIG_EXAMPLE_CONNECT_WAIT_FOR_IP
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#define TAP0_GOT_IP (0x1234)
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esp_err_t example_connect(void)
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{
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#if CONFIG_EXAMPLE_CONNECT_LWIP_TAPIF
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// configure linux tapio
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esp_netif_driver_ifconfig_t driver_cfg = {
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.handle = tapio_create(),
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.transmit = tapio_output,
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};
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// configure lwip netif for the tapif
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struct esp_netif_netstack_config stack_cfg = {
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.lwip = {
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.init_fn = lwip_tapif_init,
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.input_fn = lwip_tapif_input,
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}
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};
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// configure inherent esp-netif parameters
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esp_netif_ip_info_t ip_info = {};
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esp_netif_flags_t netif_flags = (ESP_NETIF_FLAG_EVENT_IP_MODIFIED | ESP_NETIF_FLAG_AUTOUP);
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#if !CONFIG_EXAMPLE_CONNECT_WAIT_FOR_IP
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ip_info.ip.addr = ipaddr_addr(CONFIG_EXAMPLE_CONNECT_TAPIF_IP_ADDR);
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ip_info.netmask.addr = ipaddr_addr(CONFIG_EXAMPLE_CONNECT_TAPIF_NETMASK);
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ip_info.gw.addr = ipaddr_addr(CONFIG_EXAMPLE_CONNECT_TAPIF_GW);
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#else
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netif_flags |= ESP_NETIF_DHCP_CLIENT;
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#endif
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esp_netif_inherent_config_t base_cfg = {
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.if_key = "TAP",
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.ip_info = &ip_info,
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.flags = netif_flags,
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.get_ip_event = TAP0_GOT_IP,
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.route_prio = 100
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};
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// put all configs together
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esp_netif_config_t cfg = {
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.base = &base_cfg,
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.driver = &driver_cfg,
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.stack = &stack_cfg
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};
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// create the interface and attach it to the tapio-handle
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esp_netif_t *tap_netif = esp_netif_new(&cfg);
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esp_netif_attach(tap_netif, driver_cfg.handle);
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#if CONFIG_EXAMPLE_CONNECT_WAIT_FOR_IP
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ESP_LOGI(TAG, "Waiting for IP addresses...");
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esp_netif_action_connected(tap_netif, 0, 0, 0);
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, TAP0_GOT_IP, event_handler, NULL));
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s_events = xEventGroupCreate();
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xEventGroupWaitBits(s_events, 1, pdFALSE, pdFALSE, portMAX_DELAY);
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esp_netif_get_ip_info(tap_netif, &ip_info);
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ESP_LOGI(TAG, "Assigned IP address:"IPSTR ",", IP2STR(&ip_info.ip));
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#endif // CONFIG_EXAMPLE_CONNECT_WAIT_FOR_IP
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#endif // EXAMPLE_CONNECT_LWIP_TAPIF
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return ESP_OK;
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}
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