Diff: features/nanostack/nanostack-interface/Nanostack.h

Revision:

0:38ceb79fef03

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/features/nanostack/nanostack-interface/Nanostack.h	Wed Nov 28 15:10:15 2018 +0000
@@ -0,0 +1,292 @@
+/*
+ * Copyright (c) 2016-2017, Arm Limited and affiliates.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 NANOSTACK_H_
+#define NANOSTACK_H_
+
+#include "OnboardNetworkStack.h"
+#include "NanostackMemoryManager.h"
+#include "MeshInterface.h"
+#include "mesh_interface_types.h"
+#include "eventOS_event.h"
+
+struct ns_address;
+
+class Nanostack : public OnboardNetworkStack, private mbed::NonCopyable<Nanostack> {
+public:
+    static Nanostack &get_instance();
+
+    // Our Nanostack::Interface etc are defined by mbed_mesh_api
+    class Interface;
+    class EthernetInterface;
+    class MeshInterface;
+    class LoWPANNDInterface;
+    class ThreadInterface;
+
+    /* Implement OnboardNetworkStack method */
+    virtual nsapi_error_t add_ethernet_interface(EMAC &emac, bool default_if, OnboardNetworkStack::Interface **interface_out);
+
+    /* Local variant with stronger typing and manual address specification */
+    nsapi_error_t add_ethernet_interface(EMAC &emac, bool default_if, Nanostack::EthernetInterface **interface_out, const uint8_t *mac_addr = NULL);
+
+protected:
+
+    Nanostack();
+
+    /** Get the local IP address
+     *
+     *  @return         Null-terminated representation of the local IP address
+     *                  or null if not yet connected
+     */
+    virtual const char *get_ip_address();
+
+    /** Opens a socket
+     *
+     *  Creates a network socket and stores it in the specified handle.
+     *  The handle must be passed to following calls on the socket.
+     *
+     *  A stack may have a finite number of sockets, in this case
+     *  NSAPI_ERROR_NO_SOCKET is returned if no socket is available.
+     *
+     *  @param handle   Destination for the handle to a newly created socket
+     *  @param proto    Protocol of socket to open, NSAPI_TCP or NSAPI_UDP
+     *  @return         0 on success, negative error code on failure
+     */
+    virtual nsapi_error_t socket_open(void **handle, nsapi_protocol_t proto);
+
+    /** Close the socket
+     *
+     *  Closes any open connection and deallocates any memory associated
+     *  with the socket.
+     *
+     *  @param handle   Socket handle
+     *  @return         0 on success, negative error code on failure
+     */
+    virtual nsapi_error_t socket_close(void *handle);
+
+    /** Bind a specific address to a socket
+     *
+     *  Binding a socket specifies the address and port on which to recieve
+     *  data. If the IP address is zeroed, only the port is bound.
+     *
+     *  @param handle   Socket handle
+     *  @param address  Local address to bind
+     *  @return         0 on success, negative error code on failure.
+     */
+    virtual nsapi_error_t socket_bind(void *handle, const SocketAddress &address);
+
+    /** Listen for connections on a TCP socket
+     *
+     *  Marks the socket as a passive socket that can be used to accept
+     *  incoming connections.
+     *
+     *  @param handle   Socket handle
+     *  @param backlog  Number of pending connections that can be queued
+     *                  simultaneously
+     *  @return         0 on success, negative error code on failure
+     */
+    virtual nsapi_error_t socket_listen(void *handle, int backlog);
+
+    /** Connects TCP socket to a remote host
+     *
+     *  Initiates a connection to a remote server specified by the
+     *  indicated address.
+     *
+     *  @param handle   Socket handle
+     *  @param address  The SocketAddress of the remote host
+     *  @return         0 on success, negative error code on failure
+     */
+    virtual nsapi_error_t socket_connect(void *handle, const SocketAddress &address);
+
+    /** Accepts a connection on a TCP socket
+     *
+     *  The server socket must be bound and set to listen for connections.
+     *  On a new connection, creates a network socket and stores it in the
+     *  specified handle. The handle must be passed to following calls on
+     *  the socket.
+     *
+     *  A stack may have a finite number of sockets, in this case
+     *  NSAPI_ERROR_NO_SOCKET is returned if no socket is available.
+     *
+     *  This call is non-blocking. If accept would block,
+     *  NSAPI_ERROR_WOULD_BLOCK is returned immediately.
+     *
+     *  @param server   Socket handle to server to accept from
+     *  @param handle   Destination for a handle to the newly created socket
+     *  @param address  Destination for the remote address or NULL
+     *  @return         0 on success, negative error code on failure
+     */
+    virtual nsapi_error_t socket_accept(void *handle, void **server, SocketAddress *address);
+
+    /** Send data over a TCP socket
+     *
+     *  The socket must be connected to a remote host. Returns the number of
+     *  bytes sent from the buffer.
+     *
+     *  This call is non-blocking. If send would block,
+     *  NSAPI_ERROR_WOULD_BLOCK is returned immediately.
+     *
+     *  @param handle   Socket handle
+     *  @param data     Buffer of data to send to the host
+     *  @param size     Size of the buffer in bytes
+     *  @return         Number of sent bytes on success, negative error
+     *                  code on failure
+     */
+    virtual nsapi_size_or_error_t socket_send(void *handle, const void *data, nsapi_size_t size);
+
+    /** Receive data over a TCP socket
+     *
+     *  The socket must be connected to a remote host. Returns the number of
+     *  bytes received into the buffer.
+     *
+     *  This call is non-blocking. If recv would block,
+     *  NSAPI_ERROR_WOULD_BLOCK is returned immediately.
+     *
+     *  @param handle   Socket handle
+     *  @param data     Destination buffer for data received from the host
+     *  @param size     Size of the buffer in bytes
+     *  @return         Number of received bytes on success, negative error
+     *                  code on failure
+     */
+    virtual nsapi_size_or_error_t socket_recv(void *handle, void *data, nsapi_size_t size);
+
+    /** Send a packet over a UDP socket
+     *
+     *  Sends data to the specified address. Returns the number of bytes
+     *  sent from the buffer.
+     *
+     *  This call is non-blocking. If sendto would block,
+     *  NSAPI_ERROR_WOULD_BLOCK is returned immediately.
+     *
+     *  @param handle   Socket handle
+     *  @param address  The SocketAddress of the remote host
+     *  @param data     Buffer of data to send to the host
+     *  @param size     Size of the buffer in bytes
+     *  @return         Number of sent bytes on success, negative error
+     *                  code on failure
+     */
+    virtual nsapi_size_or_error_t socket_sendto(void *handle, const SocketAddress &address, const void *data, nsapi_size_t size);
+
+    /** Receive a packet over a UDP socket
+     *
+     *  Receives data and stores the source address in address if address
+     *  is not NULL. Returns the number of bytes received into the buffer.
+     *
+     *  This call is non-blocking. If recvfrom would block,
+     *  NSAPI_ERROR_WOULD_BLOCK is returned immediately.
+     *
+     *  @param handle   Socket handle
+     *  @param address  Destination for the source address or NULL
+     *  @param buffer   Destination buffer for data received from the host
+     *  @param size     Size of the buffer in bytes
+     *  @return         Number of received bytes on success, negative error
+     *                  code on failure
+     */
+    virtual nsapi_size_or_error_t socket_recvfrom(void *handle, SocketAddress *address, void *buffer, nsapi_size_t size);
+
+    /** Register a callback on state change of the socket
+     *
+     *  The specified callback will be called on state changes such as when
+     *  the socket can recv/send/accept successfully and on when an error
+     *  occurs. The callback may also be called spuriously without reason.
+     *
+     *  The callback may be called in an interrupt context and should not
+     *  perform expensive operations such as recv/send calls.
+     *
+     *  @param handle   Socket handle
+     *  @param callback Function to call on state change
+     *  @param data     Argument to pass to callback
+     */
+    virtual void socket_attach(void *handle, void (*callback)(void *), void *data);
+
+    /*  Set stack-specific socket options
+     *
+     *  The setsockopt allow an application to pass stack-specific hints
+     *  to the underlying stack. For unsupported options,
+     *  NSAPI_ERROR_UNSUPPORTED is returned and the socket is unmodified.
+     *
+     *  @param handle   Socket handle
+     *  @param level    Stack-specific protocol level
+     *  @param optname  Stack-specific option identifier
+     *  @param optval   Option value
+     *  @param optlen   Length of the option value
+     *  @return         0 on success, negative error code on failure
+     */
+    virtual nsapi_error_t setsockopt(void *handle, int level, int optname, const void *optval, unsigned optlen);
+
+    /*  Get stack-specific socket options
+     *
+     *  The getstackopt allow an application to retrieve stack-specific hints
+     *  from the underlying stack. For unsupported options,
+     *  NSAPI_ERROR_UNSUPPORTED is returned and optval is unmodified.
+     *
+     *  @param handle   Socket handle
+     *  @param level    Stack-specific protocol level
+     *  @param optname  Stack-specific option identifier
+     *  @param optval   Destination for option value
+     *  @param optlen   Length of the option value
+     *  @return         0 on success, negative error code on failure
+     */
+    virtual nsapi_error_t getsockopt(void *handle, int level, int optname, void *optval, unsigned *optlen);
+
+private:
+
+    /** Call in callback
+      *
+      *  Callback is used to call the call in method of the network stack.
+      */
+    typedef mbed::Callback<nsapi_error_t (int delay_ms, mbed::Callback<void()> user_cb)> call_in_callback_cb_t;
+
+    /** Get a call in callback
+     *
+     *  Get a call in callback from the network stack context.
+     *
+     *  Callback should not take more than 10ms to execute, otherwise it might
+     *  prevent underlying thread processing. A portable user of the callback
+     *  should not make calls to network operations due to stack size limitations.
+     *  The callback should not perform expensive operations such as socket recv/send
+     *  calls or blocking operations.
+     *
+     *  @return         Call in callback
+     */
+    virtual call_in_callback_cb_t get_call_in_callback();
+
+    /** Call a callback after a delay
+     *
+     *  Call a callback from the network stack context after a delay. If function
+     *  returns error callback will not be called.
+     *
+     *  @param delay    Delay in milliseconds
+     *  @param func     Callback to be called
+     *  @return         0 on success, negative error code on failure
+     */
+    nsapi_error_t call_in(int delay, mbed::Callback<void()> func);
+
+    struct nanostack_callback {
+        mbed::Callback<void()> callback;
+    };
+
+    nsapi_size_or_error_t do_sendto(void *handle, const struct ns_address *address, const void *data, nsapi_size_t size);
+    static void call_event_tasklet_main(arm_event_s *event);
+    char text_ip_address[40];
+    NanostackMemoryManager memory_manager;
+    int8_t call_event_tasklet;
+};
+
+nsapi_error_t map_mesh_error(mesh_error_t err);
+
+#endif /* NANOSTACK_H_ */