samples/subsys/mgmt/mcumgr/smp_svr/src/udp.c

/*
 * Copyright (c) 2020 Prevas A/S
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <mgmt/mcumgr/smp_udp.h>
#include <net/net_mgmt.h>
#include <net/net_event.h>
#include <net/net_conn_mgr.h>

#define LOG_LEVEL LOG_LEVEL_DBG
#include <logging/log.h>
LOG_MODULE_REGISTER(smp_udp_sample);

#define EVENT_MASK (NET_EVENT_L4_CONNECTED | NET_EVENT_L4_DISCONNECTED)

static struct net_mgmt_event_callback mgmt_cb;

static void event_handler(struct net_mgmt_event_callback *cb,
			  uint32_t mgmt_event, struct net_if *iface)
{
	if ((mgmt_event & EVENT_MASK) != mgmt_event) {
		return;
	}

	if (mgmt_event == NET_EVENT_L4_CONNECTED) {
		LOG_INF("Network connected");

		if (smp_udp_open() < 0) {
			LOG_ERR("could not open smp udp");
		}

		return;
	}

	if (mgmt_event == NET_EVENT_L4_DISCONNECTED) {
		LOG_INF("Network disconnected");
		smp_udp_close();
		return;
	}
}

void start_smp_udp(void)
{
	net_mgmt_init_event_callback(&mgmt_cb, event_handler, EVENT_MASK);
	net_mgmt_add_event_callback(&mgmt_cb);
	net_conn_mgr_resend_status();
}