rdma_create_qp - Allocate a QP.
#include <rdma/rdma_cma.h> int rdma_create_qp (struct rdma_cm_id *id, struct ibv_pd *pd, struct ibv_qp_init_attr *qp_init_attr);
Librdmacm Programmer's Manual RDMA_CREATE_QP(3)
NAME
rdma_create_qp - Allocate a QP.
SYNOPSIS
#include <rdma/rdma_cma.h>
int rdma_create_qp (struct rdma_cm_id *id, struct ibv_pd *pd, struct
ibv_qp_init_attr *qp_init_attr);
ARGUMENTS
id RDMA identifier.
pd Optional protection domain for the QP.
qp_init_attr
Initial QP attributes.
DESCRIPTION
Allocate a QP associated with the specified rdma_cm_id and transition
it for sending and receiving.
RETURN VALUE
Returns 0 on success, or -1 on error. If an error occurs, errno will
be set to indicate the failure reason.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+-----------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-----------------------+
|Availability | network/open-fabrics |
+---------------+-----------------------+
|Stability | Pass-through volatile |
+---------------+-----------------------+
NOTES
The rdma_cm_id must be bound to a local RDMA device before calling this
function, and the protection domain must be for that same device. QPs
allocated to an rdma_cm_id are automatically transitioned by the librd-
macm through their states. After being allocated, the QP will be ready
to handle posting of receives. If the QP is unconnected, it will be
ready to post sends.
If a protection domain is not given - pd parameter is NULL - then the
rdma_cm_id will be created using a default protection domain. One
default protection domain is allocated per RDMA device.
The initial QP attributes are specified by the qp_init_attr parameter.
The send_cq and recv_cq fields in the ibv_qp_init_attr are optional.
If a send or receive completion queue is not specified, then a CQ will
be allocated by the rdma_cm for the QP, along with corresponding com-
pletion channels. Completion channels and CQ data created by the
rdma_cm are exposed to the user through the rdma_cm_id structure.
The actual capabilities and properties of the created QP will be
returned to the user through the qp_init_attr parameter. An rdma_cm_id
may only be associated with a single QP.
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from ['https://www.openfabrics.org/down-
loads/ibutils/ibutils-1.5.7-0.2.gbd7e502.tar.gz', 'https://www.openfab-
rics.org/downloads/libibverbs/libibverbs-1.1.8.tar.gz',
'https://www.openfabrics.org/downloads/libmlx4/libmlx4-1.0.6.tar.gz',
'https://www.openfabrics.org/downloads/libsdp/lib-
sdp-1.1.108-0.15.gd7fdb72.tar.gz', 'https://www.openfabrics.org/down-
loads/management/infiniband-diags-1.6.5.tar.gz', 'https://www.openfab-
rics.org/downloads/management/libibmad-1.3.12.tar.gz',
'https://www.openfabrics.org/downloads/management/libibu-
mad-1.3.10.2.tar.gz', 'https://www.openfabrics.org/downloads/manage-
ment/opensm-3.3.19.tar.gz', 'https://www.openfabrics.org/down-
loads/perftest/perftest-1.3.0-0.42.gf350d3d.tar.gz', 'https://www.open-
fabrics.org/downloads/qperf/qperf-0.4.9.tar.gz', 'https://www.openfab-
rics.org/downloads/rdmacm/librdmacm-1.0.21.tar.gz', 'https://www.open-
fabrics.org/downloads/rds-tools/rds-tools-2.0.4.tar.gz'].
Further information about this software can be found on the open source
community website at http://www.openfabrics.org/.
SEE ALSO
rdma_bind_addr(3), rdma_resolve_addr(3), rdma_destroy_qp(3), ibv_cre-
ate_qp(3), ibv_modify_qp(3)
librdmacm 2007-05-15 RDMA_CREATE_QP(3)