C++ (Cpp) isert_conn_qp_create Beispiele

Beispiel #1

Datei: iser_rdma.c Projekt: christopherdion/scst

static struct isert_connection *isert_conn_create(struct rdma_cm_id *cm_id,
						  struct isert_device *isert_dev)
{
	struct isert_connection *isert_conn;
	int err;
	struct isert_cq *cq;

	TRACE_ENTRY();

	isert_conn = isert_conn_alloc();
	if (unlikely(!isert_conn)) {
		pr_err("Unable to allocate iser conn, cm_id:%p\n", cm_id);
		err = -ENOMEM;
		goto fail_alloc;
	}
	isert_conn->state = ISER_CONN_INIT;
	isert_conn->cm_id = cm_id;
	isert_conn->isert_dev = isert_dev;

	/*
	 * A quote from the OFED 1.5.3.1 release notes
	 * (docs/release_notes/mthca_release_notes.txt), section "Known Issues":
	 * In mem-free devices, RC QPs can be created with a maximum of
	 * (max_sge - 1) entries only; UD QPs can be created with a maximum of
	 * (max_sge - 3) entries.
	 * A quote from the OFED 1.2.5 release notes
	 * (docs/mthca_release_notes.txt), section "Known Issues":
	 * In mem-free devices, RC QPs can be created with a maximum of
	 * (max_sge - 3) entries only.
	 */
	isert_conn->max_sge = isert_dev->device_attr.max_sge - 3;

	WARN_ON(isert_conn->max_sge < 1);

	INIT_LIST_HEAD(&isert_conn->rx_buf_list);
	INIT_LIST_HEAD(&isert_conn->tx_free_list);
	INIT_LIST_HEAD(&isert_conn->tx_busy_list);
	spin_lock_init(&isert_conn->tx_lock);
	spin_lock_init(&isert_conn->post_recv_lock);

	isert_conn->login_req_pdu = isert_rx_pdu_alloc(isert_conn,
						       ISER_MAX_LOGIN_RDSL);
	if (unlikely(!isert_conn->login_req_pdu)) {
		pr_err("Failed to init login req rx pdu\n");
		err = -ENOMEM;
		goto fail_login_req_pdu;
	}

	isert_conn->login_rsp_pdu = isert_tx_pdu_alloc(isert_conn,
						       ISER_MAX_LOGIN_RDSL);
	if (unlikely(!isert_conn->login_rsp_pdu)) {
		pr_err("Failed to init login rsp tx pdu\n");
		err = -ENOMEM;
		goto fail_login_rsp_pdu;
	}

	err = isert_conn_qp_create(isert_conn);
	if (unlikely(err))
		goto fail_qp;

	err = isert_post_recv(isert_conn, &isert_conn->login_req_pdu->wr[0], 1);
	if (unlikely(err)) {
		pr_err("Failed to post recv login req rx buf, err:%d\n", err);
		goto fail_post_recv;
	}

	kref_init(&isert_conn->kref);

	TRACE_EXIT();
	return isert_conn;

fail_post_recv:
	cq = isert_conn->qp->recv_cq->cq_context;
	mutex_lock(&dev_list_mutex);
	isert_dev->cq_qps[cq->idx]--;
	mutex_unlock(&dev_list_mutex);
	isert_conn_qp_destroy(isert_conn);
fail_qp:
	isert_pdu_free(isert_conn->login_rsp_pdu);
fail_login_rsp_pdu:
	isert_pdu_free(isert_conn->login_req_pdu);
fail_login_req_pdu:
	isert_conn_kfree(isert_conn);
fail_alloc:
	module_put(THIS_MODULE);
	TRACE_EXIT_RES(err);
	return ERR_PTR(err);
}

Beispiel #2

Datei: iser_rdma.c Projekt: qtsky89/scst

static struct isert_connection *isert_conn_create(struct rdma_cm_id *cm_id,
						  struct isert_device *isert_dev)
{
	struct isert_connection *isert_conn;
	int err;
	struct isert_cq *cq;

	TRACE_ENTRY();

	isert_conn = isert_conn_alloc();
	if (unlikely(!isert_conn)) {
		pr_err("Unable to allocate iser conn, cm_id:%p\n", cm_id);
		err = -ENOMEM;
		goto fail_alloc;
	}
	isert_conn->state = ISER_CONN_INIT;
	isert_conn->cm_id = cm_id;
	isert_conn->isert_dev = isert_dev;

	INIT_LIST_HEAD(&isert_conn->rx_buf_list);
	INIT_LIST_HEAD(&isert_conn->tx_free_list);
	INIT_LIST_HEAD(&isert_conn->tx_busy_list);
	spin_lock_init(&isert_conn->tx_lock);
	spin_lock_init(&isert_conn->post_recv_lock);

	isert_conn->login_req_pdu = isert_rx_pdu_alloc(isert_conn,
						       ISER_MAX_LOGIN_RDSL);
	if (unlikely(!isert_conn->login_req_pdu)) {
		pr_err("Failed to init login req rx pdu\n");
		err = -ENOMEM;
		goto fail_login_req_pdu;
	}

	isert_conn->login_rsp_pdu = isert_tx_pdu_alloc(isert_conn,
						       ISER_MAX_LOGIN_RDSL);
	if (unlikely(!isert_conn->login_rsp_pdu)) {
		pr_err("Failed to init login rsp tx pdu\n");
		err = -ENOMEM;
		goto fail_login_rsp_pdu;
	}

	err = isert_conn_qp_create(isert_conn);
	if (unlikely(err))
		goto fail_qp;

	err = isert_post_recv(isert_conn, &isert_conn->login_req_pdu->wr[0], 1);
	if (unlikely(err)) {
		pr_err("Failed to post recv login req rx buf, err:%d\n", err);
		goto fail_post_recv;
	}

	kref_init(&isert_conn->kref);

	TRACE_EXIT();
	return isert_conn;

fail_post_recv:
	cq = isert_conn->qp->recv_cq->cq_context;
	mutex_lock(&dev_list_mutex);
	isert_dev->cq_qps[cq->idx]--;
	mutex_unlock(&dev_list_mutex);
	isert_conn_qp_destroy(isert_conn);
fail_qp:
	isert_pdu_free(isert_conn->login_rsp_pdu);
fail_login_rsp_pdu:
	isert_pdu_free(isert_conn->login_req_pdu);
fail_login_req_pdu:
	isert_conn_kfree(isert_conn);
fail_alloc:
	module_put(THIS_MODULE);
	TRACE_EXIT_RES(err);
	return ERR_PTR(err);
}