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https://github.com/espressif/esp-idf.git
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3288f83401
Extended LwIP bridge example to support WiFi AP interface and DHCP Server https://github.com/espressif/esp-idf/issues/5697
220 lines
8.8 KiB
C
220 lines
8.8 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: Unlicense OR CC0-1.0
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*/
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#include <stdio.h>
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_netif.h"
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#include "esp_netif_br_glue.h"
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#include "esp_eth.h"
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#include "esp_event.h"
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#include "esp_log.h"
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#include "esp_mac.h"
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#include "ethernet_init.h"
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#if CONFIG_EXAMPLE_BR_WIFI
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#include "esp_wifi.h"
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#include "nvs_flash.h"
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#endif // CONFIG_EXAMPLE_BR_WIFI
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#include "sdkconfig.h"
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#include "esp_console.h"
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#include "bridge_console_cmd.h"
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static const char *TAG = "eth_bridge_example";
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/** Event handler for Ethernet events */
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static void eth_event_handler(void *arg, esp_event_base_t event_base,
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int32_t event_id, void *event_data)
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{
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uint8_t mac_addr[6] = {0};
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/* we can get the ethernet driver handle from event data */
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esp_eth_handle_t eth_handle = *(esp_eth_handle_t *)event_data;
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switch (event_id) {
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case ETHERNET_EVENT_CONNECTED:
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esp_eth_ioctl(eth_handle, ETH_CMD_G_MAC_ADDR, mac_addr);
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ESP_LOGI(TAG, "Ethernet (%p) Link Up", eth_handle);
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ESP_LOGI(TAG, "Ethernet HW Addr %02x:%02x:%02x:%02x:%02x:%02x",
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mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]);
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break;
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case ETHERNET_EVENT_DISCONNECTED:
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ESP_LOGI(TAG, "Ethernet (%p) Link Down", eth_handle);
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break;
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case ETHERNET_EVENT_START:
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ESP_LOGI(TAG, "Ethernet (%p) Started", eth_handle);
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break;
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case ETHERNET_EVENT_STOP:
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ESP_LOGI(TAG, "Ethernet (%p) Stopped", eth_handle);
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break;
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default:
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break;
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}
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}
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/** Event handler for IP_EVENT_ETH_GOT_IP */
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static void got_ip_event_handler(void *arg, esp_event_base_t event_base,
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int32_t event_id, void *event_data)
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{
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ip_event_got_ip_t *event = (ip_event_got_ip_t *) event_data;
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const esp_netif_ip_info_t *ip_info = &event->ip_info;
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ESP_LOGI(TAG, "Ethernet Got IP Address");
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ESP_LOGI(TAG, "~~~~~~~~~~~");
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ESP_LOGI(TAG, "ETHIP:" IPSTR "\r", IP2STR(&ip_info->ip));
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ESP_LOGI(TAG, "ETHMASK:" IPSTR "\r", IP2STR(&ip_info->netmask));
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ESP_LOGI(TAG, "ETHGW:" IPSTR "\r", IP2STR(&ip_info->gw));
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ESP_LOGI(TAG, "~~~~~~~~~~~");
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}
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#if CONFIG_EXAMPLE_BR_WIFI
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static void example_wifi_init(void)
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{
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esp_err_t ret = nvs_flash_init();
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if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
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ESP_ERROR_CHECK(nvs_flash_erase());
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ESP_ERROR_CHECK(nvs_flash_init());
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}
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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ESP_ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_RAM));
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wifi_config_t wifi_config = {
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.ap = {
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.ssid = CONFIG_EXAMPLE_BR_WIFI_SSID,
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.ssid_len = strlen(CONFIG_EXAMPLE_BR_WIFI_SSID),
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.password = CONFIG_EXAMPLE_BR_WIFI_PASSWORD,
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.max_connection = CONFIG_EXAMPLE_BR_MAX_STA_CONN,
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.authmode = WIFI_AUTH_WPA_WPA2_PSK,
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.channel = CONFIG_EXAMPLE_BR_WIFI_CHANNEL
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},
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};
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if (strlen(CONFIG_EXAMPLE_BR_WIFI_PASSWORD) == 0) {
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wifi_config.ap.authmode = WIFI_AUTH_OPEN;
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}
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_AP));
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ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_AP, &wifi_config));
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}
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#endif //CONFIG_EXAMPLE_BR_WIFI
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void app_main(void)
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{
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// Initialize Ethernet driver
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uint8_t eth_port_cnt = 0;
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esp_eth_handle_t *eth_handles;
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ESP_ERROR_CHECK(example_eth_init(ð_handles, ð_port_cnt));
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// The same MAC address will be used for all Ethernet ports since the bridge acts as one device
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uint8_t common_mac_addr[ETH_ADDR_LEN];
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// If internal Ethernet is not supported by ESP32x SoC, Locally Administered OUI address might be returned.
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// Note that Locally Administered OUI range should be used only when testing on a LAN under your control!
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ESP_ERROR_CHECK(esp_read_mac(common_mac_addr, ESP_MAC_ETH));
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for (int i = 0; i < eth_port_cnt; i++) {
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ESP_ERROR_CHECK(esp_eth_ioctl(eth_handles[i], ETH_CMD_S_MAC_ADDR, common_mac_addr));
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}
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// Initialize TCP/IP network interface
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ESP_ERROR_CHECK(esp_netif_init());
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// Create default event loop that running in background
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ESP_ERROR_CHECK(esp_event_loop_create_default());
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// Create instances of esp-netif for Ethernet ports
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esp_netif_t **eth_netifs = calloc(eth_port_cnt, sizeof(esp_netif_t *));
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esp_netif_inherent_config_t esp_netif_config = ESP_NETIF_INHERENT_DEFAULT_ETH();
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esp_netif_config_t netif_cfg = {
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.base = &esp_netif_config,
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.stack = ESP_NETIF_NETSTACK_DEFAULT_ETH
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};
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char if_key_str[10];
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char if_desc_str[10];
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char num_str[3];
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for (int i = 0; i < eth_port_cnt; i++) {
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itoa(i, num_str, 10);
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strcat(strcpy(if_key_str, "ETH_"), num_str);
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strcat(strcpy(if_desc_str, "eth"), num_str);
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esp_netif_config.if_key = if_key_str;
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esp_netif_config.if_desc = if_desc_str;
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esp_netif_config.route_prio = 50 - i;
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esp_netif_config.flags = 0; // esp-netif flags need to be zero when port's to be bridged
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eth_netifs[i] = esp_netif_new(&netif_cfg);
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// Attach Ethernet driver to TCP/IP stack
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ESP_ERROR_CHECK(esp_netif_attach(eth_netifs[i], esp_eth_new_netif_glue(eth_handles[i])));
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}
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uint8_t br_ports = eth_port_cnt;
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#if CONFIG_EXAMPLE_BR_WIFI
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example_wifi_init();
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esp_netif_inherent_config_t esp_netif_config_wifi = ESP_NETIF_INHERENT_DEFAULT_WIFI_AP();
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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
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esp_netif_config_wifi.ip_info = NULL; // no IP address for physical interface
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esp_netif_t *wifi_netif = esp_netif_create_wifi(WIFI_IF_AP, &esp_netif_config_wifi);
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ESP_ERROR_CHECK(esp_wifi_set_default_wifi_ap_handlers());
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br_ports++;
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#endif
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// Create instance of esp-netif for bridge interface
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#if CONFIG_EXAMPLE_BR_DHCPS
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esp_netif_inherent_config_t esp_netif_br_config = ESP_NETIF_INHERENT_DEFAULT_BR_DHCPS();
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#else
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esp_netif_inherent_config_t esp_netif_br_config = ESP_NETIF_INHERENT_DEFAULT_BR();
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#endif // CONFIG_EXAMPLE_BR_DHCPS
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esp_netif_config_t netif_br_cfg = {
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.base = &esp_netif_br_config,
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.stack = ESP_NETIF_NETSTACK_DEFAULT_BR,
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};
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// Bridge configuration
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bridgeif_config_t bridgeif_config = {
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.max_fdb_dyn_entries = 10, // maximum number of address entries in dynamic forwarding database
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.max_fdb_sta_entries = 2, // maximum number of address entries in static forwarding database
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.max_ports = br_ports // maximum number of ports the bridge can consist of
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};
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esp_netif_br_config.bridge_info = &bridgeif_config;
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// Set MAC address of bridge interface the same as the Ethernet interface
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memcpy(esp_netif_br_config.mac, common_mac_addr, ETH_ADDR_LEN);
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esp_netif_t *br_netif = esp_netif_new(&netif_br_cfg);
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// Create new esp netif bridge glue instance
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esp_netif_br_glue_handle_t netif_br_glue = esp_netif_br_glue_new();
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// Add Ethernet port interfaces to that esp netif bridge glue instance
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for (int i = 0; i < eth_port_cnt; i++) {
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ESP_ERROR_CHECK(esp_netif_br_glue_add_port(netif_br_glue, eth_netifs[i]));
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}
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#if CONFIG_EXAMPLE_BR_WIFI
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ESP_ERROR_CHECK(esp_netif_br_glue_add_wifi_port(netif_br_glue, wifi_netif));
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#endif // CONFIG_EXAMPLE_BR_WIFI
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// Attach esp netif bridge glue instance with added ports to bridge netif
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ESP_ERROR_CHECK(esp_netif_attach(br_netif, netif_br_glue));
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// Register user defined event handers
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ESP_ERROR_CHECK(esp_event_handler_register(ETH_EVENT, ESP_EVENT_ANY_ID, ð_event_handler, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_ETH_GOT_IP, &got_ip_event_handler, NULL));
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for (int i = 0; i < eth_port_cnt; i++) {
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// Since the MAC forwarding is performed in lwIP bridge, we need to pass all addresses through the Ethernet MACs
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bool promiscuous = true;
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esp_eth_ioctl(eth_handles[i], ETH_CMD_S_PROMISCUOUS, &promiscuous);
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// Start Ethernet driver state machine
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ESP_ERROR_CHECK(esp_eth_start(eth_handles[i]));
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}
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#if CONFIG_EXAMPLE_BR_WIFI
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ESP_ERROR_CHECK(esp_wifi_start());
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#endif
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// --- Initialize Console ---
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esp_console_repl_t *repl = NULL;
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esp_console_repl_config_t repl_config = ESP_CONSOLE_REPL_CONFIG_DEFAULT();
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repl_config.prompt = "bridge>";
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// install console REPL environment
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esp_console_dev_uart_config_t uart_config = ESP_CONSOLE_DEV_UART_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_console_new_repl_uart(&uart_config, &repl_config, &repl));
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example_register_br_config_commands(br_netif, br_ports);
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// start console REPL
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ESP_ERROR_CHECK(esp_console_start_repl(repl));
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}
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