1 // Copyright 2018 Espressif Systems (Shanghai) PTE LTD
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
7 // http://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
15 /* Standard includes. */
20 /* FreeRTOS includes. */
26 /* FreeRTOS+TCP includes. */
27 #include "FreeRTOS_IP.h"
28 #include "FreeRTOS_Sockets.h"
29 #include "FreeRTOS_IP_Private.h"
30 #include "FreeRTOS_DNS.h"
31 #include "NetworkBufferManagement.h"
32 #include "NetworkInterface.h"
36 #include "esp_wifi_internal.h"
37 #include "tcpip_adapter.h"
44 static const char *TAG = "NetInterface";
45 volatile static uint32_t xInterfaceState = INTERFACE_DOWN;
47 BaseType_t xNetworkInterfaceInitialise( void )
49 static BaseType_t xMACAdrInitialized = pdFALSE;
50 uint8_t ucMACAddress[ ipMAC_ADDRESS_LENGTH_BYTES ];
52 if (xInterfaceState == INTERFACE_UP) {
53 if (xMACAdrInitialized == pdFALSE) {
54 esp_wifi_get_mac(ESP_IF_WIFI_STA, ucMACAddress);
55 FreeRTOS_UpdateMACAddress(ucMACAddress);
56 xMACAdrInitialized = pdTRUE;
63 BaseType_t xNetworkInterfaceOutput( NetworkBufferDescriptor_t *const pxNetworkBuffer, BaseType_t xReleaseAfterSend )
65 if (pxNetworkBuffer == NULL || pxNetworkBuffer->pucEthernetBuffer == NULL || pxNetworkBuffer->xDataLength == 0) {
66 ESP_LOGE(TAG, "Invalid params");
71 if (xInterfaceState == INTERFACE_DOWN) {
72 ESP_LOGD(TAG, "Interface down");
75 ret = esp_wifi_internal_tx(ESP_IF_WIFI_STA, pxNetworkBuffer->pucEthernetBuffer, pxNetworkBuffer->xDataLength);
77 ESP_LOGE(TAG, "Failed to tx buffer %p, len %d, err %d", pxNetworkBuffer->pucEthernetBuffer, pxNetworkBuffer->xDataLength, ret);
81 if (xReleaseAfterSend == pdTRUE) {
82 vReleaseNetworkBufferAndDescriptor(pxNetworkBuffer);
85 return ret == ESP_OK ? pdTRUE : pdFALSE;
88 void vNetworkNotifyIFDown()
90 IPStackEvent_t xRxEvent = { eNetworkDownEvent, NULL };
91 if (xInterfaceState != INTERFACE_DOWN) {
92 xInterfaceState = INTERFACE_DOWN;
93 xSendEventStructToIPTask( &xRxEvent, 0 );
97 void vNetworkNotifyIFUp()
99 xInterfaceState = INTERFACE_UP;
102 esp_err_t wlanif_input(void *netif, void *buffer, uint16_t len, void *eb)
104 NetworkBufferDescriptor_t *pxNetworkBuffer;
105 IPStackEvent_t xRxEvent = { eNetworkRxEvent, NULL };
106 const TickType_t xDescriptorWaitTime = pdMS_TO_TICKS( 250 );
108 if( eConsiderFrameForProcessing( buffer ) != eProcessBuffer ) {
109 ESP_LOGD(TAG, "Dropping packet");
110 esp_wifi_internal_free_rx_buffer(eb);
114 pxNetworkBuffer = pxGetNetworkBufferWithDescriptor(len, xDescriptorWaitTime);
115 if (pxNetworkBuffer != NULL) {
117 /* Set the packet size, in case a larger buffer was returned. */
118 pxNetworkBuffer->xDataLength = len;
120 /* Copy the packet data. */
121 memcpy(pxNetworkBuffer->pucEthernetBuffer, buffer, len);
122 xRxEvent.pvData = (void *) pxNetworkBuffer;
124 if ( xSendEventStructToIPTask( &xRxEvent, xDescriptorWaitTime) == pdFAIL ) {
125 ESP_LOGE(TAG, "Failed to enqueue packet to network stack %p, len %d", buffer, len);
126 vReleaseNetworkBufferAndDescriptor(pxNetworkBuffer);
129 esp_wifi_internal_free_rx_buffer(eb);
132 ESP_LOGE(TAG, "Failed to get buffer descriptor");