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WiFi: ARP gratuitous API for wifi station mode (#6889)

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* wifi: ARP gratuitous API for wifi station mode

* fix with lwip1

* update comment

* update API to allow changing interval on the fly

* update API

* remove debug lines

* mock lwIP's etharp_request()

* unsigned interval

* use scheduled ticker

* ticker: +attach_ms_scheduled_accurate
ticker: +comment
gratuitous: use attach_ms_scheduled_accurate

* move to experimental namespace

* fix for lwIP-v1.4

* attempt to make pio happy

* use directly ETSTimer instead of Ticker
This commit is contained in:
david gauchard
2020-04-09 16:19:15 +02:00
committed by GitHub
parent d600cc7fa6
commit bc170e6d63
7 changed files with 181 additions and 3 deletions
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94
libraries/ESP8266WiFi/src/ESP8266WiFiGratuitous.cpp Normal file
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/*
ESP8266WiFiGratuitous.cpp - esp8266 Wifi support
copyright esp8266/arduino
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
extern "C"
{
#include "lwip/init.h" // LWIP_VERSION_*
#if LWIP_VERSION_MAJOR == 1
#include "netif/wlan_lwip_if.h" // eagle_lwip_getif()
#include "netif/etharp.h" // gratuitous arp
#include "user_interface.h"
#else
#include "lwip/etharp.h" // gratuitous arp
#endif
} // extern "C"
#include <Schedule.h>
#include "ESP8266WiFiGratuitous.h"
namespace experimental
{
ETSTimer* ESP8266WiFiGratuitous::_timer = nullptr;
void ESP8266WiFiGratuitous::stationKeepAliveNow ()
{
for (netif* interface = netif_list; interface != nullptr; interface = interface->next)
if (
(interface->flags & NETIF_FLAG_LINK_UP)
&& (interface->flags & NETIF_FLAG_UP)
#if LWIP_VERSION_MAJOR == 1
&& interface == eagle_lwip_getif(STATION_IF) /* lwip1 does not set if->num properly */
&& (!ip_addr_isany(&interface->ip_addr))
#else
&& interface->num == STATION_IF
&& (!ip4_addr_isany_val(*netif_ip4_addr(interface)))
#endif
)
{
etharp_gratuitous(interface);
break;
}
}
void ESP8266WiFiGratuitous::scheduleItForNextYieldOnce (void*)
{
schedule_recurrent_function_us([]()
{
ESP8266WiFiGratuitous::stationKeepAliveNow();
return false;
}, 0);
}
bool ESP8266WiFiGratuitous::stationKeepAliveSetIntervalMs (uint32_t ms)
{
if (_timer)
{
os_timer_disarm(_timer);
_timer = nullptr;
}
if (ms)
{
// send one now
stationKeepAliveNow();
_timer = (ETSTimer*)malloc(sizeof(ETSTimer));
if (_timer == nullptr)
return false;
os_timer_setfn(_timer, ESP8266WiFiGratuitous::scheduleItForNextYieldOnce, nullptr);
os_timer_arm(_timer, ms, true);
}
return true;
}
}; // experimental::