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---
date: 2018-12-31
footer: librdmacm
header: "Librdmacm Programmer's Manual"
layout: page
license: 'Licensed under the OpenIB.org BSD license (FreeBSD Variant) - See COPYING.md'
section: 3
title: RDMA_INIT_QP_ATTR
---
# NAME
rdma_init_qp_attr - Returns qp attributes of an rdma_cm_id.
# SYNOPSIS
```c
#include <rdma/rdma_cma.h>
int rdma_init_qp_attr(struct rdma_cm_id *id,
struct ibv_qp_attr *qp_attr,
int *qp_attr_mask);
```
# DESCRIPTION
**rdma_init_qp_attr()** returns qp attributes of an rdma_cm_id.
Information about qp attributes and qp attributes mask is returned through the *qp_attr* and *qp_attr_mask* parameters.
For details on the qp_attr structure, see ibv_modify_qp.
# ARGUMENTS
*id*
: RDMA identifier.
*qp_attr*
: A reference to a qp attributes struct containing response information.
*qp_attr_mask*
: A reference to a qp attributes mask containing response information.
# RETURN VALUE
**rdma_init_qp_attr()** returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure reason.
# SEE ALSO
**rdma_cm**(7),
**ibv_modify_qp**(3)
# AUTHOR
Danit Goldberg <danitg@mellanox.com>
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