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Nanostack.h
1 /*
2  * Copyright (c) 2016-2017, Arm Limited and affiliates.
3  * SPDX-License-Identifier: Apache-2.0
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #ifndef NANOSTACK_H_
19 #define NANOSTACK_H_
20 
21 #include "OnboardNetworkStack.h"
22 #include "NanostackMemoryManager.h"
23 #include "MeshInterface.h"
24 #include "mesh_interface_types.h"
25 #include "eventOS_event.h"
26 
27 struct ns_address;
28 
29 class Nanostack : public OnboardNetworkStack, private mbed::NonCopyable<Nanostack> {
30 public:
31  static Nanostack &get_instance();
32 
33  // Our Nanostack::Interface etc are defined by mbed_mesh_api
34  class Interface;
35  class EthernetInterface;
36  class MeshInterface;
37  class LoWPANNDInterface;
38  class ThreadInterface;
39  class WisunInterface;
40  class PPPInterface;
41 
42  /* Implement OnboardNetworkStack method */
43  nsapi_error_t add_ethernet_interface(EMAC &emac, bool default_if, OnboardNetworkStack::Interface **interface_out, NetworkInterface *user_network_interface = NULL) override;
44  nsapi_error_t add_ethernet_interface(EMAC &emac, bool default_if, OnboardNetworkStack::Interface **interface_out, const uint8_t *mac_addr, NetworkInterface *user_network_interface = NULL) override;
45 
46  /* Local variant with stronger typing and manual address specification */
47  nsapi_error_t add_ethernet_interface(EMAC &emac, bool default_if, Nanostack::EthernetInterface **interface_out, const uint8_t *mac_addr = NULL, NetworkInterface *user_network_interface = NULL);
48 
49  nsapi_error_t add_ppp_interface(PPP &ppp, bool default_if, OnboardNetworkStack::Interface **interface_out) override;
50 
51  /* Local variant with stronger typing and manual address specification */
52  nsapi_error_t add_ppp_interface(PPP &ppp, bool default_if, Nanostack::PPPInterface **interface_out);
53 
54  nsapi_error_t remove_ppp_interface(OnboardNetworkStack::Interface **interface_out) override;
55 
56 protected:
57 
58  Nanostack();
59 
60  /** @copydoc NetworkStack::get_ip_address */
61  nsapi_error_t get_ip_address(SocketAddress *sockAddr) override;
62 
63  /** Translate a hostname to an IP address with specific version using network interface name.
64  *
65  * The hostname may be either a domain name or an IP address. If the
66  * hostname is an IP address, no network transactions will be performed.
67  *
68  * Method first checks Nanostack DNS query result cache. If match is found, then the result is returned immediately.
69  * Otherwise method calls DNS resolver to find a match.
70  *
71  * @param host Hostname to resolve.
72  * @param address Pointer to a SocketAddress to store the result.
73  * @param version IP version of address to resolve, NSAPI_UNSPEC indicates
74  * version is chosen by the stack (defaults to NSAPI_UNSPEC).
75  * @param interface_name Network interface name
76  * @return NSAPI_ERROR_OK on success, negative error code on failure.
77  */
78  virtual nsapi_error_t gethostbyname(const char *name, SocketAddress *address, nsapi_version_t version, const char *interface_name) override;
79 
80  /** Translate a hostname to an IP address (asynchronous) using network interface name.
81  *
82  * The hostname may be either a domain name or a dotted IP address. If the
83  * hostname is an IP address, no network transactions will be performed.
84  *
85  * Method first checks Nanostack DNS query result cache. If match is found, then the result is returned immediately.
86  *
87  * Call is non-blocking. Result of the DNS operation is returned by the callback.
88  * If this function returns failure, callback will not be called. In case result
89  * is success (IP address was found from DNS cache), callback will be called
90  * before function returns.
91  *
92  * @param host Hostname to resolve.
93  * @param callback Callback that is called for result.
94  * @param version IP version of address to resolve, NSAPI_UNSPEC indicates
95  * version is chosen by the stack (defaults to NSAPI_UNSPEC).
96  * @param interface_name Network interface name
97  * @return 0 on immediate success,
98  * negative error code on immediate failure or
99  * a positive unique id that represents the hostname translation operation
100  * and can be passed to cancel.
101  */
102  virtual nsapi_value_or_error_t gethostbyname_async(const char *name, hostbyname_cb_t callback, nsapi_version_t version, const char *interface_name) override;
103 
104  /** Get a domain name server from a list of servers to query
105  *
106  * Returns a DNS server address for a index. DNS servers are queried from Nanostack DNS cache.
107  * If returns error no more DNS servers to read.
108  *
109  * @param index Index of the DNS server, starts from zero
110  * @param address Destination for the host address
111  * @param interface_name Network interface name
112  * @return 0 on success, negative error code on failure
113  */
114  virtual nsapi_error_t get_dns_server(int index, SocketAddress *address, const char *interface_name) override;
115 
116  /** Opens a socket
117  *
118  * Creates a network socket and stores it in the specified handle.
119  * The handle must be passed to following calls on the socket.
120  *
121  * A stack may have a finite number of sockets, in this case
122  * NSAPI_ERROR_NO_SOCKET is returned if no socket is available.
123  *
124  * @param handle Destination for the handle to a newly created socket
125  * @param proto Protocol of socket to open, NSAPI_TCP or NSAPI_UDP
126  * @return 0 on success, negative error code on failure
127  */
128  nsapi_error_t socket_open(void **handle, nsapi_protocol_t proto) override;
129 
130  /** Close the socket
131  *
132  * Closes any open connection and deallocates any memory associated
133  * with the socket.
134  *
135  * @param handle Socket handle
136  * @return 0 on success, negative error code on failure
137  */
138  nsapi_error_t socket_close(void *handle) override;
139 
140  /** Bind a specific address to a socket
141  *
142  * Binding a socket specifies the address and port on which to recieve
143  * data. If the IP address is zeroed, only the port is bound.
144  *
145  * @param handle Socket handle
146  * @param address Local address to bind
147  * @return 0 on success, negative error code on failure.
148  */
149  nsapi_error_t socket_bind(void *handle, const SocketAddress &address) override;
150 
151  /** Listen for connections on a TCP socket
152  *
153  * Marks the socket as a passive socket that can be used to accept
154  * incoming connections.
155  *
156  * @param handle Socket handle
157  * @param backlog Number of pending connections that can be queued
158  * simultaneously
159  * @return 0 on success, negative error code on failure
160  */
161  nsapi_error_t socket_listen(void *handle, int backlog) override;
162 
163  /** Connects TCP socket to a remote host
164  *
165  * Initiates a connection to a remote server specified by the
166  * indicated address.
167  *
168  * @param handle Socket handle
169  * @param address The SocketAddress of the remote host
170  * @return 0 on success, negative error code on failure
171  */
172  nsapi_error_t socket_connect(void *handle, const SocketAddress &address) override;
173 
174  /** Accepts a connection on a TCP socket
175  *
176  * The server socket must be bound and set to listen for connections.
177  * On a new connection, creates a network socket and stores it in the
178  * specified handle. The handle must be passed to following calls on
179  * the socket.
180  *
181  * A stack may have a finite number of sockets, in this case
182  * NSAPI_ERROR_NO_SOCKET is returned if no socket is available.
183  *
184  * This call is non-blocking. If accept would block,
185  * NSAPI_ERROR_WOULD_BLOCK is returned immediately.
186  *
187  * @param server Socket handle to server to accept from
188  * @param handle Destination for a handle to the newly created socket
189  * @param address Destination for the remote address or NULL
190  * @return 0 on success, negative error code on failure
191  */
192  nsapi_error_t socket_accept(void *handle, void **server, SocketAddress *address) override;
193 
194  /** Send data over a TCP socket
195  *
196  * The socket must be connected to a remote host. Returns the number of
197  * bytes sent from the buffer.
198  *
199  * This call is non-blocking. If send would block,
200  * NSAPI_ERROR_WOULD_BLOCK is returned immediately.
201  *
202  * @param handle Socket handle
203  * @param data Buffer of data to send to the host
204  * @param size Size of the buffer in bytes
205  * @return Number of sent bytes on success, negative error
206  * code on failure
207  */
208  nsapi_size_or_error_t socket_send(void *handle, const void *data, nsapi_size_t size) override;
209 
210  /** Receive data over a TCP socket
211  *
212  * The socket must be connected to a remote host. Returns the number of
213  * bytes received into the buffer.
214  *
215  * This call is non-blocking. If recv would block,
216  * NSAPI_ERROR_WOULD_BLOCK is returned immediately.
217  *
218  * @param handle Socket handle
219  * @param data Destination buffer for data received from the host
220  * @param size Size of the buffer in bytes
221  * @return Number of received bytes on success, negative error
222  * code on failure
223  */
224  nsapi_size_or_error_t socket_recv(void *handle, void *data, nsapi_size_t size) override;
225 
226  /** Send a packet over a UDP socket
227  *
228  * Sends data to the specified address. Returns the number of bytes
229  * sent from the buffer.
230  *
231  * This call is non-blocking. If sendto would block,
232  * NSAPI_ERROR_WOULD_BLOCK is returned immediately.
233  *
234  * @param handle Socket handle
235  * @param address The SocketAddress of the remote host
236  * @param data Buffer of data to send to the host
237  * @param size Size of the buffer in bytes
238  * @return Number of sent bytes on success, negative error
239  * code on failure
240  */
241  nsapi_size_or_error_t socket_sendto(void *handle, const SocketAddress &address, const void *data, nsapi_size_t size) override;
242 
243  /** Receive a packet over a UDP socket
244  *
245  * Receives data and stores the source address in address if address
246  * is not NULL. Returns the number of bytes received into the buffer.
247  *
248  * This call is non-blocking. If recvfrom would block,
249  * NSAPI_ERROR_WOULD_BLOCK is returned immediately.
250  *
251  * @param handle Socket handle
252  * @param address Destination for the source address or NULL
253  * @param buffer Destination buffer for data received from the host
254  * @param size Size of the buffer in bytes
255  * @return Number of received bytes on success, negative error
256  * code on failure
257  */
258  nsapi_size_or_error_t socket_recvfrom(void *handle, SocketAddress *address, void *buffer, nsapi_size_t size) override;
259 
260  /** Register a callback on state change of the socket
261  *
262  * The specified callback will be called on state changes such as when
263  * the socket can recv/send/accept successfully and on when an error
264  * occurs. The callback may also be called spuriously without reason.
265  *
266  * The callback may be called in an interrupt context and should not
267  * perform expensive operations such as recv/send calls.
268  *
269  * @param handle Socket handle
270  * @param callback Function to call on state change
271  * @param data Argument to pass to callback
272  */
273  void socket_attach(void *handle, void (*callback)(void *), void *data) override;
274 
275  /* Set stack-specific socket options
276  *
277  * The setsockopt allow an application to pass stack-specific hints
278  * to the underlying stack. For unsupported options,
279  * NSAPI_ERROR_UNSUPPORTED is returned and the socket is unmodified.
280  *
281  * @param handle Socket handle
282  * @param level Stack-specific protocol level
283  * @param optname Stack-specific option identifier
284  * @param optval Option value
285  * @param optlen Length of the option value
286  * @return 0 on success, negative error code on failure
287  */
288  nsapi_error_t setsockopt(void *handle, int level, int optname, const void *optval, unsigned optlen) override;
289 
290  /* Get stack-specific socket options
291  *
292  * The getstackopt allow an application to retrieve stack-specific hints
293  * from the underlying stack. For unsupported options,
294  * NSAPI_ERROR_UNSUPPORTED is returned and optval is unmodified.
295  *
296  * @param handle Socket handle
297  * @param level Stack-specific protocol level
298  * @param optname Stack-specific option identifier
299  * @param optval Destination for option value
300  * @param optlen Length of the option value
301  * @return 0 on success, negative error code on failure
302  */
303  nsapi_error_t getsockopt(void *handle, int level, int optname, void *optval, unsigned *optlen) override;
304 
306  const void *data, nsapi_size_t size,
307  nsapi_msghdr_t *control, nsapi_size_t control_size) override
308  {
310  }
311 
313  void *data, nsapi_size_t size,
314  nsapi_msghdr_t *control, nsapi_size_t control_size) override
315  {
317  }
318 
319 private:
320 
321  /** Call in callback
322  *
323  * Callback is used to call the call in method of the network stack.
324  */
326 
327  /** Get a call in callback
328  *
329  * Get a call in callback from the network stack context.
330  *
331  * Callback should not take more than 10ms to execute, otherwise it might
332  * prevent underlying thread processing. A portable user of the callback
333  * should not make calls to network operations due to stack size limitations.
334  * The callback should not perform expensive operations such as socket recv/send
335  * calls or blocking operations.
336  *
337  * @return Call in callback
338  */
339  call_in_callback_cb_t get_call_in_callback() override;
340 
341  /** Call a callback after a delay
342  *
343  * Call a callback from the network stack context after a delay. If function
344  * returns error callback will not be called.
345  *
346  * @param delay Delay in milliseconds
347  * @param func Callback to be called
348  * @return 0 on success, negative error code on failure
349  */
350  nsapi_error_t call_in(int delay, mbed::Callback<void()> func) override;
351 
352  struct nanostack_callback {
354  };
355 
356  nsapi_size_or_error_t do_sendto(void *handle, const struct ns_address *address, const void *data, nsapi_size_t size);
357  static void call_event_tasklet_main(arm_event_s *event);
358  char text_ip_address[40];
359  NanostackMemoryManager memory_manager;
360  int8_t call_event_tasklet;
361 };
362 
363 nsapi_error_t map_mesh_error(mesh_error_t err);
364 
365 #endif /* NANOSTACK_H_ */
nsapi_msghdr
Definition: nsapi_types.h:414
nsapi_size_or_error_t socket_recvfrom(void *handle, SocketAddress *address, void *buffer, nsapi_size_t size) override
Receive a packet over a UDP socket.
Wi-SUN mesh network interface class.
virtual nsapi_value_or_error_t gethostbyname_async(const char *name, hostbyname_cb_t callback, nsapi_version_t version, const char *interface_name) override
Translate a hostname to an IP address (asynchronous) using network interface name.
6LoWPAN-ND mesh network interface class
nsapi_error_t setsockopt(void *handle, int level, int optname, const void *optval, unsigned optlen) override
Set stack-specific socket options.
nsapi_error_t socket_bind(void *handle, const SocketAddress &address) override
Bind a specific address to a socket.
nsapi_size_or_error_t socket_recvfrom_control(nsapi_socket_t handle, SocketAddress *address, void *data, nsapi_size_t size, nsapi_msghdr_t *control, nsapi_size_t control_size) override
Receive a packet with ancillary data over a UDP socket.
Definition: Nanostack.h:312
Representation of a stack&#39;s view of an interface.
void * nsapi_socket_t
Opaque handle for network sockets.
Definition: nsapi_types.h:254
signed int nsapi_error_t
Type used to represent error codes.
Definition: nsapi_types.h:142
nsapi_error_t getsockopt(void *handle, int level, int optname, void *optval, unsigned *optlen) override
Get stack-specific socket options.
Prevents generation of copy constructor and copy assignment operator in derived classes.
Definition: NonCopyable.h:162
Callback< R(ArgTs...)> callback(R(*func)(ArgTs...)=nullptr) noexcept
Create a callback class with type inferred from the arguments.
Definition: Callback.h:678
signed int nsapi_size_or_error_t
Type used to represent either a size or error passed through sockets.
Definition: nsapi_types.h:153
nsapi_size_or_error_t socket_recv(void *handle, void *data, nsapi_size_t size) override
Receive data over a TCP socket.
nsapi_error_t socket_listen(void *handle, int backlog) override
Listen for connections on a TCP socket.
Thread mesh network interface class.
mbed OS API for onboard IP stack abstraction
signed int nsapi_value_or_error_t
Type used to represent either a value or error.
Definition: nsapi_types.h:160
Definition: PPP.h:26
nsapi_error_t socket_open(void **handle, nsapi_protocol_t proto) override
Opens a socket.
SocketAddress class.
Definition: SocketAddress.h:37
Common interface that is shared between network devices.
nsapi_size_or_error_t socket_send(void *handle, const void *data, nsapi_size_t size) override
Send data over a TCP socket.
nsapi_error_t get_ip_address(SocketAddress *sockAddr) override
Get the local IP address.
nsapi_size_or_error_t socket_sendto_control(nsapi_socket_t handle, const SocketAddress &address, const void *data, nsapi_size_t size, nsapi_msghdr_t *control, nsapi_size_t control_size) override
Send a packet with ancillary data over a UDP socket.
Definition: Nanostack.h:305
nsapi_size_or_error_t socket_sendto(void *handle, const SocketAddress &address, const void *data, nsapi_size_t size) override
Send a packet over a UDP socket.
nsapi_error_t socket_close(void *handle) override
Close the socket.
virtual nsapi_error_t get_dns_server(int index, SocketAddress *address, const char *interface_name) override
Get a domain name server from a list of servers to query.
virtual nsapi_error_t gethostbyname(const char *name, SocketAddress *address, nsapi_version_t version, const char *interface_name) override
Translate a hostname to an IP address with specific version using network interface name...
nsapi_error_t add_ethernet_interface(EMAC &emac, bool default_if, OnboardNetworkStack::Interface **interface_out, NetworkInterface *user_network_interface=NULL) override
Register a network interface with the IP stack.
unsigned int nsapi_size_t
Type used to represent the size of data passed through sockets.
Definition: nsapi_types.h:146
This interface should be used to abstract low level access to networking hardware All operations rece...
Definition: EMAC.h:33
void socket_attach(void *handle, void(*callback)(void *), void *data) override
Register a callback on state change of the socket.
nsapi_error_t socket_accept(void *handle, void **server, SocketAddress *address) override
Accepts a connection on a TCP socket.
Callback class based on template specialization.
Definition: Callback.h:53
nsapi_error_t socket_connect(void *handle, const SocketAddress &address) override
Connects TCP socket to a remote host.
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