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fix(examples): Make multi-netif example working with DNS_PER_DEFAULT_NETIF feature

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This commit is contained in:
David Cermak
2024-07-08 10:25:24 +02:00
parent b710dbd2ad
commit bc8ac4c684
7 changed files with 47 additions and 14 deletions
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26
examples/esp_netif/multiple_netifs/main/multi_netif_main.c
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
@@ -23,9 +23,9 @@
#include "nvs_flash.h"
#include "iface_info.h"
iface_info_t *eth_init(int prio);
iface_info_t *wifi_init(int prio);
iface_info_t *ppp_init(int prio);
iface_info_t *example_eth_init(int prio);
iface_info_t *example_wifi_init(int prio);
iface_info_t *example_ppp_init(int prio);
esp_err_t check_connectivity(const char *host);
#define HOST "www.espressif.com"
@@ -69,14 +69,18 @@ void app_main(void)
// all interfaces
iface_info_t *ifaces[] = {
eth_init(ETH_PRIO),
wifi_init(WIFI_PRIO),
ppp_init(PPP_PRIO),
example_eth_init(ETH_PRIO),
example_wifi_init(WIFI_PRIO),
example_ppp_init(PPP_PRIO),
};
size_t num_of_ifaces = sizeof(ifaces) / sizeof(ifaces[0]);
while (true) {
#ifdef CONFIG_EXAMPLE_DEMONSTRATE_DNS_CLEAR_CACHE
// For demonstration purposes we clear DNS table every iteration to exercise
// a condition of DNS servers being misconfigured
dns_clear_cache();
#endif
vTaskDelay(pdMS_TO_TICKS(2000));
ssize_t i = get_default(ifaces, num_of_ifaces);
if (i == -1) { // default netif is NULL, probably all interfaces are down -> retry
@@ -91,7 +95,9 @@ void app_main(void)
continue;
}
if (connect_status == ESP_ERR_NOT_FOUND) {
#ifndef CONFIG_ESP_NETIF_SET_DNS_PER_DEFAULT_NETIF
// set the default DNS info to global DNS server list
// manually if DNS_PER_DEFAULT_NETIF if OFF or not-supported
for (int j = 0; j < 2; ++j) {
esp_netif_dns_info_t dns_info;
esp_netif_get_dns_info(ifaces[i]->netif, j, &dns_info);
@@ -102,6 +108,12 @@ void app_main(void)
ESP_LOGI(TAG, "Reconfigured DNS%i=" IPSTR, j, IP2STR(&ifaces[i]->dns[j].ip.u_addr.ip4));
}
}
#else
// simulate that the (default) netif is brought UP
// this is only needed, since we explicitly clear DNS servers every iteration using dns_clear_cache()
// (for demonstration purpose only, won't be needed in your project, unless you delete DNS info for some reasons)
esp_netif_action_connected(ifaces[i]->netif, NULL, 0, NULL);
#endif
}
if (connect_status == ESP_FAIL) {
ESP_LOGE(TAG, "No connection via the default netif!");