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net: lwm2m: Add lwm2m_send_empty_ack() function to internal API

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So far this function existed as a static function in LwM2M PULL FOTA
module. Since such functionality will be needed in other places, make it
an internal API function.

Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
This commit is contained in:
Robert Lubos 2020-10-13 14:08:17 +02:00 • committed by Carles Cufí
commit 94d62ca151
3 changed files with 36 additions and 34 deletions
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33
subsys/net/lib/lwm2m/lwm2m_engine.c
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@ -1036,6 +1036,39 @@ int lwm2m_send_message(struct lwm2m_message *msg)
return 0;
}
int lwm2m_send_empty_ack(struct lwm2m_ctx *client_ctx, uint16_t mid)
{
struct lwm2m_message *msg;
int ret;
msg = lwm2m_get_message(client_ctx);
if (!msg) {
LOG_ERR("Unable to get a lwm2m message!");
return -ENOMEM;
}
msg->type = COAP_TYPE_ACK;
msg->code = COAP_CODE_EMPTY;
msg->mid = mid;
ret = lwm2m_init_message(msg);
if (ret) {
goto cleanup;
}
ret = lwm2m_send_message(msg);
if (ret < 0) {
LOG_ERR("Error sending LWM2M packet (err:%d).", ret);
goto cleanup;
}
return 0;
cleanup:
lwm2m_reset_message(msg, true);
return ret;
}
uint16_t lwm2m_get_rd_data(uint8_t *client_data, uint16_t size)
{
struct lwm2m_engine_obj *obj;