esp_modem: Moved to component folder

components/esp_modem/include/cxx_include/esp_modem_netif.hpp

@@ -0,0 +1,89 @@
+// Copyright 2021 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef _ESP_MODEM_NETIF_HPP
+#define _ESP_MODEM_NETIF_HPP
+
+#include <memory>
+#include <cstddef>
+#include "esp_netif.h"
+#include "cxx_include/esp_modem_primitives.hpp"
+
+namespace esp_modem {
+
+class DTE;
+class Netif;
+
+struct ppp_netif_driver {
+    esp_netif_driver_base_t base;
+    Netif *ppp;
+};
+
+/**
+ * @defgroup ESP_MODEM_NETIF
+ * @brief Network interface layer of the esp-modem
+ */
+
+/** @addtogroup ESP_MODEM_NETIF
+* @{
+*/
+
+/**
+ * @brief Network interface class responsible to glue the esp-netif to the modem's DCE
+ */
+class Netif {
+public:
+    explicit Netif(std::shared_ptr<DTE> e, esp_netif_t *netif);
+
+    ~Netif();
+
+    /**
+     * @brief Start the network interface
+     */
+    void start();
+
+    /**
+     * @brief Blocks until the network interface closes
+     */
+    void wait_until_ppp_exits();
+
+    /**
+     * @brief Stop the network interface
+     */
+    void stop();
+
+private:
+    void receive(uint8_t *data, size_t len);
+
+    static esp_err_t esp_modem_dte_transmit(void *h, void *buffer, size_t len);
+
+    static esp_err_t esp_modem_post_attach(esp_netif_t *esp_netif, void *args);
+
+    static void on_ppp_changed(void *arg, esp_event_base_t event_base, int32_t event_id, void *event_data);
+
+    std::shared_ptr<DTE> ppp_dte;
+    esp_netif_t *netif;
+    struct ppp_netif_driver driver{};
+    SignalGroup signal;
+    static const size_t PPP_STARTED = SignalGroup::bit0;
+    static const size_t PPP_EXIT = SignalGroup::bit1;
+};
+
+/**
+ * @}
+ */
+
+} // namespace esp_modem
+
+#endif // _ESP_MODEM_NETIF_HPP