C++ (Cpp) isert_free_conn_resourcesの例

コード例 #1

ファイル: iser_rdma.c プロジェクト: christopherdion/scst

static void isert_kref_free(struct kref *kref)
{
	struct isert_connection *isert_conn = container_of(kref,
							   struct isert_connection,
							   kref);
	struct isert_device *isert_dev = isert_conn->isert_dev;
	struct isert_cq *cq = isert_conn->qp->recv_cq->cq_context;

	TRACE_ENTRY();

	pr_info("isert_conn_free conn:%p\n", isert_conn);

	isert_free_conn_resources(isert_conn);

	isert_conn_qp_destroy(isert_conn);

	mutex_lock(&dev_list_mutex);
	isert_dev->cq_qps[cq->idx]--;
	list_del(&isert_conn->portal_node);
	isert_deref_device(isert_dev);
	if (unlikely(isert_conn->portal->state == ISERT_PORTAL_INACTIVE))
		isert_portal_free(isert_conn->portal);
	mutex_unlock(&dev_list_mutex);

	rdma_destroy_id(isert_conn->cm_id);

	isert_conn_kfree(isert_conn);

	module_put(THIS_MODULE);

	TRACE_EXIT();
}

コード例 #2

ファイル: iser_pdu.c プロジェクト: qtsky89/scst-xcopy

int isert_alloc_conn_resources(struct isert_connection *isert_conn)
{
	struct isert_cmnd *pdu, *prev_pdu = NULL, *first_pdu = NULL;
	int t_datasz = 512; /* RFC states that minimum receive data size is 512 */
	int i_datasz = ISER_HDRS_SZ + SCST_SENSE_BUFFERSIZE;
	int i, err = 0;
	int to_alloc;

	TRACE_ENTRY();

	isert_conn->repost_threshold = 32;
	to_alloc = isert_conn->queue_depth * 2 + isert_conn->repost_threshold;

	if (unlikely(to_alloc > ISER_MAX_WCE)) {
		pr_err("QueuedCommands larger than %d not supported\n",
		       (ISER_MAX_WCE - isert_conn->repost_threshold) / 2);
		err = -EINVAL;
		goto out;
	}

	for (i = 0; i < to_alloc; i++) {
		pdu = isert_rx_pdu_alloc(isert_conn, t_datasz);
		if (unlikely(!pdu)) {
			err = -ENOMEM;
			goto clean_pdus;
		}

		if (unlikely(first_pdu == NULL))
			first_pdu = pdu;
		else
			isert_link_recv_pdu_wrs(prev_pdu, pdu);

		prev_pdu = pdu;

		pdu = isert_tx_pdu_alloc(isert_conn, i_datasz);
		if (unlikely(!pdu)) {
			err = -ENOMEM;
			goto clean_pdus;
		}
	}

	err = isert_post_recv(isert_conn, &first_pdu->wr[0], to_alloc);
	if (unlikely(err)) {
		pr_err("Failed to post recv err:%d\n", err);
		goto clean_pdus;
	}

out:
	TRACE_EXIT_RES(err);
	return err;

clean_pdus:
	isert_free_conn_resources(isert_conn);
	goto out;
}