uint32_t iot_context_manager_table_free(const iot_interface_t * p_interface)
{
VERIFY_MODULE_IS_INITIALIZED();
NULL_PARAM_CHECK(p_interface);
uint32_t err_code = NRF_SUCCESS;
CM_ENTRY();
SDK_MUTEX_INIT(m_iot_context_manager_mutex);
CM_MUTEX_LOCK();
const uint32_t table_id = context_table_find(p_interface);
if (table_id != IOT_CONTEXT_MANAGER_MAX_TABLES)
{
// Clear context table.
CM_TRC("Found context table assigned to interface.");
context_table_init(table_id);
}
else
{
// No free context table found.
CM_ERR("No context table found.");
err_code = (NRF_ERROR_NOT_FOUND | IOT_CONTEXT_MANAGER_ERR_BASE);
}
CM_MUTEX_UNLOCK();
CM_EXIT();
return err_code;
}
uint32_t iot_context_manager_get_by_cid(const iot_interface_t * p_interface,
uint8_t context_id,
iot_context_t ** pp_context)
{
VERIFY_MODULE_IS_INITIALIZED();
NULL_PARAM_CHECK(p_interface);
NULL_PARAM_CHECK(pp_context);
VERIFY_CID_VALUE(context_id);
uint32_t err_code;
CM_ENTRY();
CM_MUTEX_LOCK();
const uint32_t table_id = context_table_find(p_interface);
if (table_id != IOT_CONTEXT_MANAGER_MAX_TABLES)
{
err_code = context_find_by_cid(table_id, context_id, pp_context);
}
else
{
// No free context table found.
CM_TRC("No context table found.");
err_code = (NRF_ERROR_NOT_FOUND | IOT_CONTEXT_MANAGER_ERR_BASE);
}
CM_MUTEX_UNLOCK();
CM_EXIT();
return err_code;
}
uint32_t iot_context_manager_table_alloc(const iot_interface_t * p_interface)
{
VERIFY_MODULE_IS_INITIALIZED();
NULL_PARAM_CHECK(p_interface);
uint32_t err_code = NRF_SUCCESS;
CM_ENTRY();
CM_MUTEX_LOCK();
const uint32_t table_id = context_table_find(NULL);
if (table_id != IOT_CONTEXT_MANAGER_MAX_TABLES)
{
// Found a free context table and assign to it.
CM_TRC("Assigned new context table.");
m_context_table[table_id].p_interface = (iot_interface_t *)p_interface;
}
else
{
// No free context table found.
CM_ERR("No context table found.");
err_code = (NRF_ERROR_NO_MEM | IOT_CONTEXT_MANAGER_ERR_BASE);
}
CM_MUTEX_UNLOCK();
CM_EXIT();
return err_code;
}
uint32_t iot_context_manager_get_by_addr(const iot_interface_t * p_interface,
const ipv6_addr_t * p_addr,
iot_context_t ** pp_context)
{
VERIFY_MODULE_IS_INITIALIZED();
NULL_PARAM_CHECK(p_interface);
NULL_PARAM_CHECK(p_addr);
NULL_PARAM_CHECK(pp_context);
uint32_t err_code;
CM_TRC("[CONTEXT_MANAGER]: >> iot_context_manager_get_by_addr\r\n");
CM_MUTEX_LOCK();
const uint32_t table_id = context_table_find(p_interface);
if (table_id != IOT_CONTEXT_MANAGER_MAX_TABLES)
{
err_code = context_find_by_prefix(table_id, p_addr, pp_context);
}
else
{
// No free context table found.
CM_TRC("[CONTEXT_MANAGER]: No context table found.\r\n");
err_code = (NRF_ERROR_NOT_FOUND | IOT_CONTEXT_MANAGER_ERR_BASE);
}
CM_MUTEX_UNLOCK();
CM_TRC("[CONTEXT_MANAGER]: << iot_context_manager_get_by_addr\r\n");
return err_code;
}
uint32_t iot_context_manager_remove(const iot_interface_t * p_interface,
iot_context_t * p_context)
{
VERIFY_MODULE_IS_INITIALIZED();
NULL_PARAM_CHECK(p_interface);
NULL_PARAM_CHECK(p_context);
uint32_t err_code = NRF_SUCCESS;
CM_ENTRY();
CM_MUTEX_LOCK();
const uint32_t table_id = context_table_find(p_interface);
if (table_id != IOT_CONTEXT_MANAGER_MAX_TABLES)
{
if (p_context->context_id != IPV6_CONTEXT_IDENTIFIER_NONE)
{
m_context_table[table_id].context_count--;
}
// Reinit context entry.
context_init(p_context);
}
else
{
// No free context table found.
CM_ERR("No context table found.");
err_code = (NRF_ERROR_NOT_FOUND | IOT_CONTEXT_MANAGER_ERR_BASE);
}
CM_MUTEX_UNLOCK();
CM_EXIT();
return err_code;
}
uint32_t iot_context_manager_init(void)
{
uint32_t index;
CM_ENTRY();
SDK_MUTEX_INIT(m_iot_context_manager_mutex);
CM_MUTEX_LOCK();
for (index = 0; index < IOT_CONTEXT_MANAGER_MAX_TABLES; index++)
{
context_table_init(index);
}
m_initialization_state = true;
CM_MUTEX_UNLOCK();
CM_EXIT();
return NRF_SUCCESS;
}
uint32_t iot_context_manager_update(const iot_interface_t * p_interface,
iot_context_t * p_context)
{
VERIFY_MODULE_IS_INITIALIZED();
NULL_PARAM_CHECK(p_context);
VERIFY_CID_VALUE(p_context->context_id);
VERIFY_PREFIX_LEN_VALUE(p_context->prefix_len);
uint32_t retval = NRF_SUCCESS;
uint32_t err_code = NRF_SUCCESS;
iot_context_t * p_internal_context;
CM_ENTRY();
CM_MUTEX_LOCK();
const uint32_t table_id = context_table_find(p_interface);
if (table_id != IOT_CONTEXT_MANAGER_MAX_TABLES)
{
// Try to find context in context table.
retval = context_find_by_cid(table_id, p_context->context_id, &p_internal_context);
if (retval != NRF_SUCCESS)
{
err_code = context_find_free(table_id, &p_internal_context);
// Increase context count.
if (err_code == NRF_SUCCESS)
{
m_context_table[table_id].context_count++;
}
}
if (err_code == NRF_SUCCESS)
{
// Update context table, with parameters from application.
p_internal_context->context_id = p_context->context_id;
p_internal_context->prefix_len = p_context->prefix_len;
p_internal_context->compression_flag = p_context->compression_flag;
memset(p_internal_context->prefix.u8, 0, IPV6_ADDR_SIZE);
IPV6_ADDRESS_PREFIX_SET(p_internal_context->prefix.u8, p_context->prefix.u8, p_context->prefix_len);
}
else
{
CM_ERR("No place in context table.");
}
}
else
{
// No free context table found.
CM_ERR("No context table found.");
err_code = (NRF_ERROR_NOT_FOUND | IOT_CONTEXT_MANAGER_ERR_BASE);
}
CM_MUTEX_UNLOCK();
CM_EXIT();
return err_code;
}