Function ulp_session_init

dpdk/drivers/net/bnxt/tf_ulp/bnxt_ulp.c:1362–1409

* Allocate and Initialize an ULP session and set it's state to INITIALIZED. * If it's already initialized simply return the already existing session. */

 * If it's already initialized simply return the already existing session.
 */
static struct bnxt_ulp_session_state *
ulp_session_init(struct bnxt *bp,
		 bool *init)
{
	struct rte_pci_device		*pci_dev;
	struct rte_pci_addr		*pci_addr;
	struct bnxt_ulp_session_state	*session;
	int rc = 0;

	if (!bp)
		return NULL;

	pci_dev = RTE_DEV_TO_PCI(bp->eth_dev->device);
	pci_addr = &pci_dev->addr;

	pthread_mutex_lock(&bnxt_ulp_global_mutex);

	session = ulp_get_session(bp, pci_addr);
	if (!session) {
		/* Not Found the session  Allocate a new one */
		session = rte_zmalloc("bnxt_ulp_session",
				      sizeof(struct bnxt_ulp_session_state),
				      0);
		if (!session) {
			BNXT_TF_DBG(ERR,
				    "Allocation failed for bnxt_ulp_session\n");
			pthread_mutex_unlock(&bnxt_ulp_global_mutex);
			return NULL;

		} else {
			/* Add it to the queue */
			session->pci_info.domain = pci_addr->domain;
			session->pci_info.bus = pci_addr->bus;
			memcpy(session->dsn, bp->dsn, sizeof(session->dsn));
			rc = pthread_mutex_init(&session->bnxt_ulp_mutex, NULL);
			if (rc) {
				BNXT_TF_DBG(ERR, "mutex create failed\n");
				pthread_mutex_unlock(&bnxt_ulp_global_mutex);
				return NULL;
			}
			STAILQ_INSERT_TAIL(&bnxt_ulp_session_list,
					   session, next);
		}
	}
	ulp_context_initialized(session, init);
	pthread_mutex_unlock(&bnxt_ulp_global_mutex);
	return session;
}

/*
 * When a device is closed, remove it's associated session from the global