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Fix(dhcps):fix dhcp subnet option api dos not work issue

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xueyunfei
2023-11-10 11:19:41 +08:00
parent 173f596159
commit 3eb68f9829
1 changed files with 17 additions and 0 deletions
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17
components/esp_netif/lwip/esp_netif_lwip.c
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@ -1857,6 +1857,23 @@ esp_err_t esp_netif_dhcps_option(esp_netif_t *esp_netif, esp_netif_dhcp_option_m
break;
}
case ESP_NETIF_SUBNET_MASK: {
esp_netif_ip_info_t *default_ip = esp_netif->ip_info;
ip4_addr_t *config_netmask = (ip4_addr_t *)opt_val;
if (!memcmp(&default_ip->netmask, config_netmask, sizeof(struct ip4_addr))) {
ESP_LOGE(TAG, "Please use esp_netif_set_ip_info interface to configure subnet mask");
/*
* This API directly changes the subnet mask of dhcp server
* but the subnet mask of the network interface has not changed
* If you need to change the subnet mask of dhcp server
* you need to change the subnet mask of the network interface first.
* If the subnet mask of dhcp server is changed
* and the subnet mask of network interface is inconsistent
* with the subnet mask of dhcp sever, it may lead to the failure of sending packets.
* If want to configure the subnet mask of dhcp server
* please use esp_netif_set_ip_info to change the subnet mask of network interface first.
*/
return ESP_ERR_ESP_NETIF_INVALID_PARAMS;
}
memcpy(opt_info, opt_val, opt_len);
break;
}