feat(wifi_remote): Initial stubs for wifi-remote

esp_wifi_remote/wifi_remote_net.c

@@ -0,0 +1,82 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include <esp_private/wifi.h>
+#include "esp_err.h"
+#include <rpc_wrapper.h>
+
+#define CHANNELS 2
+
+static esp_hosted_channel_fn_t s_tx_cb[CHANNELS];
+static esp_hosted_channel_t *s_channel[CHANNELS];
+static wifi_rxcb_t s_rx_fn[CHANNELS];
+
+esp_err_t esp_wifi_remote_channel_rx(void *h, void *buffer, size_t len)
+{
+    if (h == s_channel[0]) {
+        return s_rx_fn[0](buffer, len, buffer);
+    }
+    if (h == s_channel[1]) {
+        return s_rx_fn[1](buffer, len, buffer);
+    }
+    return ESP_FAIL;
+}
+
+esp_err_t esp_wifi_remote_channel_set(wifi_interface_t ifx, void *h, esp_err_t (*tx_cb)(void *, void *, size_t))
+{
+    if (ifx == WIFI_IF_STA) {
+        s_channel[0] = h;
+        s_tx_cb[0] = tx_cb;
+        return ESP_OK;
+    }
+    if (ifx == WIFI_IF_AP) {
+        s_channel[1] = h;
+        s_tx_cb[1] = tx_cb;
+        return ESP_OK;
+    }
+    return ESP_FAIL;
+}
+
+
+esp_err_t esp_wifi_internal_set_sta_ip(void)
+{
+    return ESP_OK;
+}
+
+esp_err_t esp_wifi_internal_reg_netstack_buf_cb(wifi_netstack_buf_ref_cb_t ref, wifi_netstack_buf_free_cb_t free)
+{
+    return ESP_OK;
+}
+
+void esp_wifi_internal_free_rx_buffer(void* buffer)
+{
+//    free(buffer);
+}
+
+int esp_wifi_internal_tx(wifi_interface_t ifx, void *buffer, uint16_t len)
+{
+    if (ifx == WIFI_IF_STA) {
+        return s_tx_cb[0](s_channel[0], buffer, len);
+    }
+    if (ifx == WIFI_IF_AP) {
+        return s_tx_cb[1](s_channel[1], buffer, len);
+    }
+
+    return -1;
+}
+
+esp_err_t esp_wifi_internal_reg_rxcb(wifi_interface_t ifx, wifi_rxcb_t fn)
+{
+    if (ifx == WIFI_IF_STA) {
+        s_rx_fn[0] = fn;
+        return ESP_OK;
+    }
+    if (ifx == WIFI_IF_AP) {
+        s_rx_fn[1] = fn;
+        return ESP_OK;
+    }
+
+    return ESP_FAIL;
+}