Function tap_dev_close

dpdk/drivers/net/tap/rte_eth_tap.c:1118–1199

}

static int
tap_dev_close(struct rte_eth_dev *dev)
{
	int i;
	struct pmd_internals *internals = dev->data->dev_private;
	struct pmd_process_private *process_private = dev->process_private;
	struct rx_queue *rxq;

	if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
		rte_free(dev->process_private);
		if (tap_devices_count == 1)
			rte_mp_action_unregister(TAP_MP_REQ_START_RXTX);
		tap_devices_count--;
		return 0;
	}

	if (!internals->persist)
		tap_link_set_down(dev);
	if (internals->nlsk_fd != -1) {
		tap_flow_flush(dev, NULL);
		tap_flow_implicit_flush(internals, NULL);
		tap_nl_final(internals->nlsk_fd);
		internals->nlsk_fd = -1;
	}

	for (i = 0; i < RTE_PMD_TAP_MAX_QUEUES; i++) {
		if (process_private->rxq_fds[i] != -1) {
			rxq = &internals->rxq[i];
			close(process_private->rxq_fds[i]);
			process_private->rxq_fds[i] = -1;
			tap_rxq_pool_free(rxq->pool);
			rte_free(rxq->iovecs);
			rxq->pool = NULL;
			rxq->iovecs = NULL;
		}
		if (process_private->txq_fds[i] != -1) {
			close(process_private->txq_fds[i]);
			process_private->txq_fds[i] = -1;
		}
	}

	if (internals->remote_if_index) {
		/* Restore initial remote state */
		int ret = ioctl(internals->ioctl_sock, SIOCSIFFLAGS,
				&internals->remote_initial_flags);
		if (ret)
			TAP_LOG(ERR, "restore remote state failed: %d", ret);

	}

	rte_mempool_free(internals->gso_ctx_mp);
	internals->gso_ctx_mp = NULL;

	if (internals->ka_fd != -1) {
		close(internals->ka_fd);
		internals->ka_fd = -1;
	}