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Merge pull request #10978 from vmedcy/lwip-rawsocket
LwIP: add ICMPv4 Socket support
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Original file line number | Diff line number | Diff line change |
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/* Socket | ||
* Copyright (c) 2015 ARM Limited | ||
* | ||
* 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. | ||
*/ | ||
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#include "ICMPSocket.h" | ||
#include "Timer.h" | ||
#include "mbed_assert.h" | ||
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ICMPSocket::ICMPSocket() | ||
{ | ||
_socket_stats.stats_update_proto(this, NSAPI_ICMP); | ||
} | ||
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nsapi_protocol_t ICMPSocket::get_proto() | ||
{ | ||
return NSAPI_ICMP; | ||
} |
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/** \addtogroup netsocket */ | ||
/** @{*/ | ||
/* ICMPSocket | ||
* Copyright (c) 2015 ARM Limited | ||
* | ||
* 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. | ||
*/ | ||
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#ifndef ICMPSOCKET_H | ||
#define ICMPSOCKET_H | ||
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#include "netsocket/InternetSocket.h" | ||
#include "netsocket/InternetDatagramSocket.h" | ||
#include "netsocket/NetworkStack.h" | ||
#include "netsocket/NetworkInterface.h" | ||
#include "rtos/EventFlags.h" | ||
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/** ICMP socket implementation. | ||
*/ | ||
class ICMPSocket : public InternetDatagramSocket { | ||
public: | ||
/** Create an uninitialized socket. | ||
* | ||
* @note Must call open to initialize the socket on a network stack. | ||
*/ | ||
ICMPSocket(); | ||
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#if !defined(DOXYGEN_ONLY) | ||
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protected: | ||
virtual nsapi_protocol_t get_proto(); | ||
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#endif //!defined(DOXYGEN_ONLY) | ||
}; | ||
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#endif | ||
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/** @}*/ |
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/* Socket | ||
* Copyright (c) 2015 ARM Limited | ||
* | ||
* 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. | ||
*/ | ||
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#include "InternetDatagramSocket.h" | ||
#include "Timer.h" | ||
#include "mbed_assert.h" | ||
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nsapi_error_t InternetDatagramSocket::connect(const SocketAddress &address) | ||
{ | ||
_remote_peer = address; | ||
_socket_stats.stats_update_peer(this, _remote_peer); | ||
_socket_stats.stats_update_socket_state(this, SOCK_CONNECTED); | ||
return NSAPI_ERROR_OK; | ||
} | ||
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nsapi_size_or_error_t InternetDatagramSocket::sendto(const char *host, uint16_t port, const void *data, nsapi_size_t size) | ||
{ | ||
SocketAddress address; | ||
nsapi_size_or_error_t err; | ||
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if (!strcmp(_interface_name, "")) { | ||
err = _stack->gethostbyname(host, &address); | ||
} else { | ||
err = _stack->gethostbyname(host, &address, NSAPI_UNSPEC, _interface_name); | ||
} | ||
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if (err) { | ||
return NSAPI_ERROR_DNS_FAILURE; | ||
} | ||
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address.set_port(port); | ||
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// sendto is thread safe | ||
return sendto(address, data, size); | ||
} | ||
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nsapi_size_or_error_t InternetDatagramSocket::sendto(const SocketAddress &address, const void *data, nsapi_size_t size) | ||
{ | ||
_lock.lock(); | ||
nsapi_size_or_error_t ret; | ||
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_writers++; | ||
if (_socket) { | ||
_socket_stats.stats_update_socket_state(this, SOCK_OPEN); | ||
_socket_stats.stats_update_peer(this, address); | ||
} | ||
while (true) { | ||
if (!_socket) { | ||
ret = NSAPI_ERROR_NO_SOCKET; | ||
break; | ||
} | ||
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core_util_atomic_flag_clear(&_pending); | ||
nsapi_size_or_error_t sent = _stack->socket_sendto(_socket, address, data, size); | ||
if ((0 == _timeout) || (NSAPI_ERROR_WOULD_BLOCK != sent)) { | ||
_socket_stats.stats_update_sent_bytes(this, sent); | ||
ret = sent; | ||
break; | ||
} else { | ||
uint32_t flag; | ||
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// Release lock before blocking so other threads | ||
// accessing this object aren't blocked | ||
_lock.unlock(); | ||
flag = _event_flag.wait_any(WRITE_FLAG, _timeout); | ||
_lock.lock(); | ||
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if (flag & osFlagsError) { | ||
// Timeout break | ||
ret = NSAPI_ERROR_WOULD_BLOCK; | ||
break; | ||
} | ||
} | ||
} | ||
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_writers--; | ||
if (!_socket || !_writers) { | ||
_event_flag.set(FINISHED_FLAG); | ||
} | ||
_lock.unlock(); | ||
return ret; | ||
} | ||
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nsapi_size_or_error_t InternetDatagramSocket::send(const void *data, nsapi_size_t size) | ||
{ | ||
if (!_remote_peer) { | ||
return NSAPI_ERROR_NO_ADDRESS; | ||
} | ||
return sendto(_remote_peer, data, size); | ||
} | ||
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nsapi_size_or_error_t InternetDatagramSocket::recvfrom(SocketAddress *address, void *buffer, nsapi_size_t size) | ||
{ | ||
_lock.lock(); | ||
nsapi_size_or_error_t ret; | ||
SocketAddress ignored; | ||
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if (!address) { | ||
address = &ignored; | ||
} | ||
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_readers++; | ||
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if (_socket) { | ||
_socket_stats.stats_update_socket_state(this, SOCK_OPEN); | ||
} | ||
while (true) { | ||
if (!_socket) { | ||
ret = NSAPI_ERROR_NO_SOCKET; | ||
break; | ||
} | ||
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core_util_atomic_flag_clear(&_pending); | ||
nsapi_size_or_error_t recv = _stack->socket_recvfrom(_socket, address, buffer, size); | ||
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// Filter incomming packets using connected peer address | ||
if (recv >= 0 && _remote_peer && _remote_peer != *address) { | ||
continue; | ||
} | ||
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_socket_stats.stats_update_peer(this, _remote_peer); | ||
// Non-blocking sockets always return. Blocking only returns when success or errors other than WOULD_BLOCK | ||
if ((0 == _timeout) || (NSAPI_ERROR_WOULD_BLOCK != recv)) { | ||
ret = recv; | ||
_socket_stats.stats_update_recv_bytes(this, recv); | ||
break; | ||
} else { | ||
uint32_t flag; | ||
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// Release lock before blocking so other threads | ||
// accessing this object aren't blocked | ||
_lock.unlock(); | ||
flag = _event_flag.wait_any(READ_FLAG, _timeout); | ||
_lock.lock(); | ||
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if (flag & osFlagsError) { | ||
// Timeout break | ||
ret = NSAPI_ERROR_WOULD_BLOCK; | ||
break; | ||
} | ||
} | ||
} | ||
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_readers--; | ||
if (!_socket || !_readers) { | ||
_event_flag.set(FINISHED_FLAG); | ||
} | ||
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_lock.unlock(); | ||
return ret; | ||
} | ||
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nsapi_size_or_error_t InternetDatagramSocket::recv(void *buffer, nsapi_size_t size) | ||
{ | ||
return recvfrom(NULL, buffer, size); | ||
} | ||
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Socket *InternetDatagramSocket::accept(nsapi_error_t *error) | ||
{ | ||
if (error) { | ||
*error = NSAPI_ERROR_UNSUPPORTED; | ||
} | ||
return NULL; | ||
} | ||
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nsapi_error_t InternetDatagramSocket::listen(int) | ||
{ | ||
return NSAPI_ERROR_UNSUPPORTED; | ||
} |
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