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ibv_alloc_mw.3
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ibv_alloc_pd.3
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ibv_asyncwatch.1
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ibv_attach_mcast.3
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ibv_bind_mw.3
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ibv_create_ah.3
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ibv_create_ah_from_wc.3
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ibv_create_comp_channel.3
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ibv_create_cq.3
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ibv_create_cq_ex.3
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ibv_create_flow.3
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ibv_create_qp.3
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ibv_create_qp_ex.3
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ibv_create_rwq_ind_table.3
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ibv_create_srq.3
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ibv_create_srq_ex.3
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ibv_create_wq.3
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ibv_devices.1
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ibv_devinfo.1
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ibv_event_type_str.3
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ibv_fork_init.3
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ibv_get_async_event.3
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ibv_get_cq_event.3
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ibv_get_device_guid.3
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ibv_get_device_list.3
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ibv_get_device_name.3
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ibv_get_srq_num.3
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ibv_inc_rkey.3
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ibv_modify_qp.3
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ibv_modify_srq.3
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ibv_modify_wq.3
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ibv_open_device.3
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ibv_open_qp.3
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ibv_open_xrcd.3
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ibv_poll_cq.3
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ibv_post_recv.3
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ibv_post_send.3
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ibv_post_srq_recv.3
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ibv_query_device.3
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ibv_query_device_ex.3
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ibv_query_gid.3
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ibv_query_pkey.3
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ibv_query_port.3
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ibv_query_qp.3
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ibv_query_rt_values_ex.3
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ibv_query_srq.3
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ibv_rate_to_mbps.3
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ibv_rate_to_mult.3
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ibv_rc_pingpong.1
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ibv_reg_mr.3
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ibv_req_notify_cq.3
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ibv_rereg_mr.3
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ibv_resize_cq.3
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ibv_srq_pingpong.1
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ibv_uc_pingpong.1
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ibv_ud_pingpong.1
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ibv_xsrq_pingpong.1
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Editing: ibv_open_qp.3
.\" -*- nroff -*- .\" Licensed under the OpenIB.org BSD license (FreeBSD Variant) - See COPYING.md .\" .TH IBV_OPEN_QP 3 2011-08-12 libibverbs "Libibverbs Programmer's Manual" .SH "NAME" ibv_open_qp \- open a shareable queue pair (QP) .SH "SYNOPSIS" .nf .B #include <infiniband/verbs.h> .sp .BI "struct ibv_qp *ibv_open_qp(struct ibv_context " "*context" , .BI " struct ibv_qp_open_attr " "*qp_open_attr" ); .fi .SH "DESCRIPTION" .B ibv_open_qp() opens an existing queue pair (QP) associated with the extended protection domain .I xrcd\fR. The argument .I qp_open_attr is an ibv_qp_open_attr struct, as defined in <infiniband/verbs.h>. .PP .nf struct ibv_qp_open_attr { .in +8 uint32_t comp_mask; /* Identifies valid fields */ uint32_t qp_num; /* QP number */ struct *ibv_xrcd; /* XRC domain */ void *qp_context; /* User defined opaque value */ enum ibv_qp_type qp_type; /* QP transport service type */ .fi .PP .B ibv_destroy_qp() closes the opened QP and destroys the underlying QP if it has no other references. .I qp\fR. .SH "RETURN VALUE" .B ibv_open_qp() returns a pointer to the opened QP, or NULL if the request fails. Check the QP number (\fBqp_num\fR) in the returned QP. .SH "NOTES" .B ibv_open_qp() will fail if a it is asked to open a QP that does not exist within the xrcd with the specified qp_num and qp_type. .SH "SEE ALSO" .BR ibv_alloc_pd (3), .BR ibv_create_qp (3), .BR ibv_create_qp_ex (3), .BR ibv_modify_qp (3), .BR ibv_query_qp (3) .SH "AUTHORS" .TP Sean Hefty <sean.hefty@intel.com>
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