Diff: features/nanostack/FEATURE_NANOSTACK/nanostack-interface/NanostackInterface.h

Revision:

0:f269e3021894

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/features/nanostack/FEATURE_NANOSTACK/nanostack-interface/NanostackInterface.h	Sun Oct 23 15:10:02 2016 +0000
@@ -0,0 +1,323 @@
+/*
+ * Copyright (c) 2016 ARM Limited. All rights reserved.
+ */
+
+#ifndef NANOSTACK_INTERFACE_H_
+#define NANOSTACK_INTERFACE_H_
+
+#include "NetworkStack.h"
+#include "MeshInterface.h"
+#include "NanostackRfPhy.h"
+
+#include "mbed-mesh-api/Mesh6LoWPAN_ND.h"
+#include "mbed-mesh-api/MeshThread.h"
+
+class NanostackInterface : public NetworkStack {
+public:
+    static NanostackInterface *get_stack();
+
+protected:
+
+    /** 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 int 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 int 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 int 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 int 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 int 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 int 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 int socket_send(void *handle, const void *data, unsigned 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 int socket_recv(void *handle, void *data, unsigned 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 int socket_sendto(void *handle, const SocketAddress &address, const void *data, unsigned 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 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 int socket_recvfrom(void *handle, SocketAddress *address, void *buffer, unsigned 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 int 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 int getsockopt(void *handle, int level, int optname, void *optval, unsigned *optlen);
+
+private:
+    static NanostackInterface * _ns_interface;
+};
+
+class MeshInterfaceNanostack : public MeshInterface {
+public:
+
+    /** Attach phy and initialize the mesh
+     *
+     *  Initializes a mesh interface on the given phy. Not needed if
+     *  the phy is passed to the mesh's constructor.
+     *
+     *  @return     0 on success, negative on failure
+     */
+    virtual int initialize(NanostackRfPhy *phy);
+
+    /** Start the interface
+     *
+     *  @return     0 on success, negative on failure
+     */
+    virtual int connect() = 0;
+
+    /** Stop the interface
+     *
+     *  @return     0 on success, negative on failure
+     */
+    virtual int disconnect();
+
+    /** Get the internally stored IP address
+    /return     IP address of the interface or null if not yet connected
+    */
+    virtual const char *get_ip_address();
+
+    /** Get the internally stored MAC address
+    /return     MAC address of the interface
+    */
+    virtual const char *get_mac_address();
+
+protected:
+    MeshInterfaceNanostack();
+    MeshInterfaceNanostack(NanostackRfPhy *phy);
+    int register_rf();
+    int actual_connect();
+    virtual NetworkStack * get_stack(void);
+
+    void mesh_network_handler(mesh_connection_status_t status);
+    NanostackRfPhy *phy;
+    AbstractMesh *mesh_api;
+    int8_t rf_device_id;
+    uint8_t eui64[8];
+    char ip_addr_str[40];
+    char mac_addr_str[24];
+    Semaphore connect_semaphore;
+};
+
+class LoWPANNDInterface : public MeshInterfaceNanostack {
+public:
+
+    /** Create an uninitialized LoWPANNDInterface
+     *
+     *  Must initialize to initialize the mesh on a phy.
+     */
+    LoWPANNDInterface() : MeshInterfaceNanostack() {
+
+    }
+
+    /** Create an initialized MeshInterface
+     *
+     */
+    LoWPANNDInterface(NanostackRfPhy *phy) : MeshInterfaceNanostack(phy) {
+
+    }
+
+    int connect();
+protected:
+    Mesh6LoWPAN_ND *get_mesh_api() const { return static_cast<Mesh6LoWPAN_ND *>(mesh_api); }
+private:
+
+};
+
+class ThreadInterface : public MeshInterfaceNanostack {
+public:
+
+    /** Create an uninitialized LoWPANNDInterface
+     *
+     *  Must initialize to initialize the mesh on a phy.
+     */
+    ThreadInterface() : MeshInterfaceNanostack() {
+
+    }
+
+    /** Create an initialized MeshInterface
+     *
+     */
+    ThreadInterface(NanostackRfPhy *phy) : MeshInterfaceNanostack(phy) {
+
+    }
+
+    int connect();
+protected:
+    MeshThread *get_mesh_api() const { return static_cast<MeshThread *>(mesh_api); }
+private:
+
+};
+
+
+#endif /* NANOSTACK_INTERFACE_H_ */