/* * SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Unlicense OR CC0-1.0 */ #include #include #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "esp_netif.h" #include "esp_netif_br_glue.h" #include "esp_eth.h" #include "esp_event.h" #include "esp_log.h" #include "esp_mac.h" #include "ethernet_init.h" #if CONFIG_EXAMPLE_BR_WIFI #include "esp_wifi.h" #include "nvs_flash.h" #endif // CONFIG_EXAMPLE_BR_WIFI #include "sdkconfig.h" #include "esp_console.h" #include "bridge_console_cmd.h" static const char *TAG = "eth_bridge_example"; /** Event handler for Ethernet events */ static void eth_event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, void *event_data) { uint8_t mac_addr[6] = {0}; /* we can get the ethernet driver handle from event data */ esp_eth_handle_t eth_handle = *(esp_eth_handle_t *)event_data; switch (event_id) { case ETHERNET_EVENT_CONNECTED: esp_eth_ioctl(eth_handle, ETH_CMD_G_MAC_ADDR, mac_addr); ESP_LOGI(TAG, "Ethernet (%p) Link Up", eth_handle); ESP_LOGI(TAG, "Ethernet HW Addr %02x:%02x:%02x:%02x:%02x:%02x", mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]); break; case ETHERNET_EVENT_DISCONNECTED: ESP_LOGI(TAG, "Ethernet (%p) Link Down", eth_handle); break; case ETHERNET_EVENT_START: ESP_LOGI(TAG, "Ethernet (%p) Started", eth_handle); break; case ETHERNET_EVENT_STOP: ESP_LOGI(TAG, "Ethernet (%p) Stopped", eth_handle); break; default: break; } } /** Event handler for IP_EVENT_ETH_GOT_IP */ static void got_ip_event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, void *event_data) { ip_event_got_ip_t *event = (ip_event_got_ip_t *) event_data; const esp_netif_ip_info_t *ip_info = &event->ip_info; ESP_LOGI(TAG, "Ethernet Got IP Address"); ESP_LOGI(TAG, "~~~~~~~~~~~"); ESP_LOGI(TAG, "ETHIP:" IPSTR "\r", IP2STR(&ip_info->ip)); ESP_LOGI(TAG, "ETHMASK:" IPSTR "\r", IP2STR(&ip_info->netmask)); ESP_LOGI(TAG, "ETHGW:" IPSTR "\r", IP2STR(&ip_info->gw)); ESP_LOGI(TAG, "~~~~~~~~~~~"); } #if CONFIG_EXAMPLE_BR_WIFI static void example_wifi_init(void) { esp_err_t ret = nvs_flash_init(); if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) { ESP_ERROR_CHECK(nvs_flash_erase()); ESP_ERROR_CHECK(nvs_flash_init()); } wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT(); ESP_ERROR_CHECK(esp_wifi_init(&cfg)); ESP_ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_RAM)); wifi_config_t wifi_config = { .ap = { .ssid = CONFIG_EXAMPLE_BR_WIFI_SSID, .ssid_len = strlen(CONFIG_EXAMPLE_BR_WIFI_SSID), .password = CONFIG_EXAMPLE_BR_WIFI_PASSWORD, .max_connection = CONFIG_EXAMPLE_BR_MAX_STA_CONN, .authmode = WIFI_AUTH_WPA_WPA2_PSK, .channel = CONFIG_EXAMPLE_BR_WIFI_CHANNEL }, }; if (strlen(CONFIG_EXAMPLE_BR_WIFI_PASSWORD) == 0) { wifi_config.ap.authmode = WIFI_AUTH_OPEN; } ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_AP)); ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_AP, &wifi_config)); } #endif //CONFIG_EXAMPLE_BR_WIFI void app_main(void) { // Initialize Ethernet driver uint8_t eth_port_cnt = 0; esp_eth_handle_t *eth_handles; ESP_ERROR_CHECK(example_eth_init(ð_handles, ð_port_cnt)); // The same MAC address will be used for all Ethernet ports since the bridge acts as one device uint8_t common_mac_addr[ETH_ADDR_LEN]; // If internal Ethernet is not supported by ESP32x SoC, Locally Administered OUI address might be returned. // Note that Locally Administered OUI range should be used only when testing on a LAN under your control! ESP_ERROR_CHECK(esp_read_mac(common_mac_addr, ESP_MAC_ETH)); for (int i = 0; i < eth_port_cnt; i++) { ESP_ERROR_CHECK(esp_eth_ioctl(eth_handles[i], ETH_CMD_S_MAC_ADDR, common_mac_addr)); } // Initialize TCP/IP network interface ESP_ERROR_CHECK(esp_netif_init()); // Create default event loop that running in background ESP_ERROR_CHECK(esp_event_loop_create_default()); // Create instances of esp-netif for Ethernet ports esp_netif_t **eth_netifs = calloc(eth_port_cnt, sizeof(esp_netif_t *)); esp_netif_inherent_config_t esp_netif_config = ESP_NETIF_INHERENT_DEFAULT_ETH(); esp_netif_config_t netif_cfg = { .base = &esp_netif_config, .stack = ESP_NETIF_NETSTACK_DEFAULT_ETH }; char if_key_str[10]; char if_desc_str[10]; char num_str[3]; for (int i = 0; i < eth_port_cnt; i++) { itoa(i, num_str, 10); strcat(strcpy(if_key_str, "ETH_"), num_str); strcat(strcpy(if_desc_str, "eth"), num_str); esp_netif_config.if_key = if_key_str; esp_netif_config.if_desc = if_desc_str; esp_netif_config.route_prio = 50 - i; esp_netif_config.flags = 0; // esp-netif flags need to be zero when port's to be bridged eth_netifs[i] = esp_netif_new(&netif_cfg); // Attach Ethernet driver to TCP/IP stack ESP_ERROR_CHECK(esp_netif_attach(eth_netifs[i], esp_eth_new_netif_glue(eth_handles[i]))); } uint8_t br_ports = eth_port_cnt; #if CONFIG_EXAMPLE_BR_WIFI example_wifi_init(); esp_netif_inherent_config_t esp_netif_config_wifi = ESP_NETIF_INHERENT_DEFAULT_WIFI_AP(); esp_netif_config_wifi.flags = ESP_NETIF_FLAG_AUTOUP; // esp-netif flags need to be zero when port's to be bridged except for AP's ESP_NETIF_FLAG_AUTOUP esp_netif_config_wifi.ip_info = NULL; // no IP address for physical interface esp_netif_t *wifi_netif = esp_netif_create_wifi(WIFI_IF_AP, &esp_netif_config_wifi); ESP_ERROR_CHECK(esp_wifi_set_default_wifi_ap_handlers()); br_ports++; #endif // Create instance of esp-netif for bridge interface #if CONFIG_EXAMPLE_BR_DHCPS esp_netif_inherent_config_t esp_netif_br_config = ESP_NETIF_INHERENT_DEFAULT_BR_DHCPS(); #else esp_netif_inherent_config_t esp_netif_br_config = ESP_NETIF_INHERENT_DEFAULT_BR(); #endif // CONFIG_EXAMPLE_BR_DHCPS esp_netif_config_t netif_br_cfg = { .base = &esp_netif_br_config, .stack = ESP_NETIF_NETSTACK_DEFAULT_BR, }; // Bridge configuration bridgeif_config_t bridgeif_config = { .max_fdb_dyn_entries = 10, // maximum number of address entries in dynamic forwarding database .max_fdb_sta_entries = 2, // maximum number of address entries in static forwarding database .max_ports = br_ports // maximum number of ports the bridge can consist of }; esp_netif_br_config.bridge_info = &bridgeif_config; // Set MAC address of bridge interface the same as the Ethernet interface memcpy(esp_netif_br_config.mac, common_mac_addr, ETH_ADDR_LEN); esp_netif_t *br_netif = esp_netif_new(&netif_br_cfg); // Create new esp netif bridge glue instance esp_netif_br_glue_handle_t netif_br_glue = esp_netif_br_glue_new(); // Add Ethernet port interfaces to that esp netif bridge glue instance for (int i = 0; i < eth_port_cnt; i++) { ESP_ERROR_CHECK(esp_netif_br_glue_add_port(netif_br_glue, eth_netifs[i])); } #if CONFIG_EXAMPLE_BR_WIFI ESP_ERROR_CHECK(esp_netif_br_glue_add_wifi_port(netif_br_glue, wifi_netif)); #endif // CONFIG_EXAMPLE_BR_WIFI // Attach esp netif bridge glue instance with added ports to bridge netif ESP_ERROR_CHECK(esp_netif_attach(br_netif, netif_br_glue)); // Register user defined event handlers ESP_ERROR_CHECK(esp_event_handler_register(ETH_EVENT, ESP_EVENT_ANY_ID, ð_event_handler, NULL)); ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_ETH_GOT_IP, &got_ip_event_handler, NULL)); for (int i = 0; i < eth_port_cnt; i++) { // Since the MAC forwarding is performed in lwIP bridge, we need to pass all addresses through the Ethernet MACs bool promiscuous = true; esp_eth_ioctl(eth_handles[i], ETH_CMD_S_PROMISCUOUS, &promiscuous); // Start Ethernet driver state machine ESP_ERROR_CHECK(esp_eth_start(eth_handles[i])); } #if CONFIG_EXAMPLE_BR_WIFI ESP_ERROR_CHECK(esp_wifi_start()); #endif // --- Initialize Console --- esp_console_repl_t *repl = NULL; esp_console_repl_config_t repl_config = ESP_CONSOLE_REPL_CONFIG_DEFAULT(); repl_config.prompt = "bridge>"; // install console REPL environment esp_console_dev_uart_config_t uart_config = ESP_CONSOLE_DEV_UART_CONFIG_DEFAULT(); ESP_ERROR_CHECK(esp_console_new_repl_uart(&uart_config, &repl_config, &repl)); example_register_br_config_commands(br_netif, br_ports); // start console REPL ESP_ERROR_CHECK(esp_console_start_repl(repl)); }