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/*
* SPDX-FileCopyrightText: 2019-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdlib.h>
#include <inttypes.h>
#include "esp_netif.h"
#include "esp_eth_netif_glue.h"
#include "esp_netif_net_stack.h"
#include "esp_event.h"
#include "esp_log.h"
#include "esp_check.h"
#if CONFIG_ESP_NETIF_L2_TAP
#include "esp_vfs_l2tap.h"
#endif
const static char *TAG = "esp_eth.netif.netif_glue";
typedef struct esp_eth_netif_glue_t esp_eth_netif_glue_t;
struct esp_eth_netif_glue_t {
esp_netif_driver_base_t base;
esp_eth_handle_t eth_driver;
esp_event_handler_instance_t start_ctx_handler;
esp_event_handler_instance_t stop_ctx_handler;
esp_event_handler_instance_t connect_ctx_handler;
esp_event_handler_instance_t disconnect_ctx_handler;
esp_event_handler_instance_t get_ip_ctx_handler;
};
static esp_err_t eth_input_to_netif(esp_eth_handle_t eth_handle, uint8_t *buffer, uint32_t length, void *priv)
{
#if CONFIG_ESP_NETIF_L2_TAP
esp_err_t ret = ESP_OK;
ret = esp_vfs_l2tap_eth_filter(eth_handle, buffer, (size_t *)&length);
if (length == 0) {
return ret;
}
#endif
return esp_netif_receive((esp_netif_t *)priv, buffer, length, NULL);
}
static void eth_l2_free(void *h, void* buffer)
{
free(buffer);
}
static esp_err_t esp_eth_post_attach(esp_netif_t *esp_netif, void *args)
{
uint8_t eth_mac[6];
esp_eth_netif_glue_t *netif_glue = (esp_eth_netif_glue_t *)args;
netif_glue->base.netif = esp_netif;
esp_eth_update_input_path(netif_glue->eth_driver, eth_input_to_netif, esp_netif);
// set driver related config to esp-netif
esp_netif_driver_ifconfig_t driver_ifconfig = {
.handle = netif_glue->eth_driver,
.transmit = esp_eth_transmit,
.driver_free_rx_buffer = eth_l2_free
};
ESP_ERROR_CHECK(esp_netif_set_driver_config(esp_netif, &driver_ifconfig));
esp_eth_ioctl(netif_glue->eth_driver, ETH_CMD_G_MAC_ADDR, eth_mac);
ESP_LOGI(TAG, "%02x:%02x:%02x:%02x:%02x:%02x", eth_mac[0], eth_mac[1],
eth_mac[2], eth_mac[3], eth_mac[4], eth_mac[5]);
esp_netif_set_mac(esp_netif, eth_mac);
ESP_LOGI(TAG, "ethernet attached to netif");
return ESP_OK;
}
static void eth_action_start(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
esp_eth_handle_t eth_handle = *(esp_eth_handle_t *)event_data;
esp_eth_netif_glue_t *netif_glue = handler_args;
ESP_LOGD(TAG, "eth_action_start: %p, %p, %" PRIi32 ", %p, %p", netif_glue, base, event_id, event_data, *(esp_eth_handle_t *)event_data);
if (netif_glue->eth_driver == eth_handle) {
esp_netif_action_start(netif_glue->base.netif, base, event_id, event_data);
}
}
static void eth_action_stop(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
esp_eth_handle_t eth_handle = *(esp_eth_handle_t *)event_data;
esp_eth_netif_glue_t *netif_glue = handler_args;
ESP_LOGD(TAG, "eth_action_stop: %p, %p, %" PRIi32 ", %p, %p", netif_glue, base, event_id, event_data, *(esp_eth_handle_t *)event_data);
if (netif_glue->eth_driver == eth_handle) {
esp_netif_action_stop(netif_glue->base.netif, base, event_id, event_data);
}
}
static void eth_action_connected(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
esp_eth_handle_t eth_handle = *(esp_eth_handle_t *)event_data;
esp_eth_netif_glue_t *netif_glue = handler_args;
ESP_LOGD(TAG, "eth_action_connected: %p, %p, %" PRIi32 ", %p, %p", netif_glue, base, event_id, event_data, *(esp_eth_handle_t *)event_data);
if (netif_glue->eth_driver == eth_handle) {
eth_speed_t speed;
esp_eth_ioctl(eth_handle, ETH_CMD_G_SPEED, &speed);
esp_netif_set_link_speed(netif_glue->base.netif, speed == ETH_SPEED_100M ? 100000000 : 10000000);
esp_netif_action_connected(netif_glue->base.netif, base, event_id, event_data);
}
}
static void eth_action_disconnected(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
esp_eth_handle_t eth_handle = *(esp_eth_handle_t *)event_data;
esp_eth_netif_glue_t *netif_glue = handler_args;
ESP_LOGD(TAG, "eth_action_disconnected: %p, %p, %" PRIi32 ", %p, %p", netif_glue, base, event_id, event_data, *(esp_eth_handle_t *)event_data);
if (netif_glue->eth_driver == eth_handle) {
esp_netif_action_disconnected(netif_glue->base.netif, base, event_id, event_data);
}
}
static void eth_action_got_ip(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
ip_event_got_ip_t *ip_event = (ip_event_got_ip_t *)event_data;
esp_eth_netif_glue_t *netif_glue = handler_args;
ESP_LOGD(TAG, "eth_action_got_ip: %p, %p, %" PRIi32 ", %p, %p", netif_glue, base, event_id, event_data, *(esp_eth_handle_t *)event_data);
if (netif_glue->base.netif == ip_event->esp_netif) {
esp_netif_action_got_ip(ip_event->esp_netif, base, event_id, event_data);
}
}
static esp_err_t esp_eth_clear_glue_instance_handlers(esp_eth_netif_glue_handle_t eth_netif_glue)
{
ESP_RETURN_ON_FALSE(eth_netif_glue, ESP_ERR_INVALID_ARG, TAG, "eth_netif_glue handle can't be null");
if (eth_netif_glue->start_ctx_handler) {
esp_event_handler_instance_unregister(ETH_EVENT, ETHERNET_EVENT_START, eth_netif_glue->start_ctx_handler);
eth_netif_glue->start_ctx_handler = NULL;
}
if (eth_netif_glue->stop_ctx_handler) {
esp_event_handler_instance_unregister(ETH_EVENT, ETHERNET_EVENT_STOP, eth_netif_glue->stop_ctx_handler);
eth_netif_glue->stop_ctx_handler = NULL;
}
if (eth_netif_glue->connect_ctx_handler) {
esp_event_handler_instance_unregister(ETH_EVENT, ETHERNET_EVENT_CONNECTED, eth_netif_glue->connect_ctx_handler);
eth_netif_glue->connect_ctx_handler = NULL;
}
if (eth_netif_glue->disconnect_ctx_handler) {
esp_event_handler_instance_unregister(ETH_EVENT, ETHERNET_EVENT_DISCONNECTED, eth_netif_glue->disconnect_ctx_handler);
eth_netif_glue->disconnect_ctx_handler = NULL;
}
if (eth_netif_glue->get_ip_ctx_handler) {
esp_event_handler_instance_unregister(IP_EVENT, IP_EVENT_ETH_GOT_IP, eth_netif_glue->get_ip_ctx_handler);
eth_netif_glue->get_ip_ctx_handler = NULL;
}
return ESP_OK;
}
static esp_err_t esp_eth_set_glue_instance_handlers(esp_eth_netif_glue_handle_t eth_netif_glue)
{
ESP_RETURN_ON_FALSE(eth_netif_glue, ESP_ERR_INVALID_ARG, TAG, "eth_netif_glue handle can't be null");
esp_err_t ret = esp_event_handler_instance_register(ETH_EVENT, ETHERNET_EVENT_START, eth_action_start, eth_netif_glue, ð_netif_glue->start_ctx_handler);
if (ret != ESP_OK) {
goto fail;
}
ret = esp_event_handler_instance_register(ETH_EVENT, ETHERNET_EVENT_STOP, eth_action_stop, eth_netif_glue, ð_netif_glue->stop_ctx_handler);
if (ret != ESP_OK) {
goto fail;
}
ret = esp_event_handler_instance_register(ETH_EVENT, ETHERNET_EVENT_CONNECTED, eth_action_connected, eth_netif_glue, ð_netif_glue->connect_ctx_handler);
if (ret != ESP_OK) {
goto fail;
}
ret = esp_event_handler_instance_register(ETH_EVENT, ETHERNET_EVENT_DISCONNECTED, eth_action_disconnected, eth_netif_glue, ð_netif_glue->disconnect_ctx_handler);
if (ret != ESP_OK) {
goto fail;
}
ret = esp_event_handler_instance_register(IP_EVENT, IP_EVENT_ETH_GOT_IP, eth_action_got_ip, eth_netif_glue, ð_netif_glue->get_ip_ctx_handler);
if (ret != ESP_OK) {
goto fail;
}
return ESP_OK;
fail:
esp_eth_clear_glue_instance_handlers(eth_netif_glue);
return ret;
}
esp_err_t esp_eth_del_netif_glue(esp_eth_netif_glue_handle_t eth_netif_glue)
{
esp_eth_clear_glue_instance_handlers(eth_netif_glue);
esp_eth_decrease_reference(eth_netif_glue->eth_driver);
free(eth_netif_glue);
return ESP_OK;
}
esp_eth_netif_glue_handle_t esp_eth_new_netif_glue(esp_eth_handle_t eth_hdl)
{
esp_eth_netif_glue_t *netif_glue = calloc(1, sizeof(esp_eth_netif_glue_t));
if (!netif_glue) {
ESP_LOGE(TAG, "create netif glue failed");
return NULL;
}
netif_glue->eth_driver = eth_hdl;
netif_glue->base.post_attach = esp_eth_post_attach;
esp_eth_increase_reference(eth_hdl);
if (esp_eth_set_glue_instance_handlers(netif_glue) != ESP_OK) {
esp_eth_del_netif_glue(netif_glue);
return NULL;
}
return netif_glue;
}
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