Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
IBV_OPEN_QP(3)		Libibverbs Programmer's	Manual		IBV_OPEN_QP(3)

NAME
       ibv_open_qp - open a shareable queue pair (QP)

SYNOPSIS
       #include	<infiniband/verbs.h>

       struct ibv_qp *ibv_open_qp(struct ibv_context *context,
				  struct ibv_qp_open_attr *qp_open_attr);

DESCRIPTION
       ibv_open_qp() opens an existing queue pair (QP) associated with the ex-
       tended  protection  domain  xrcd.   The	argument  qp_open_attr	is  an
       ibv_qp_open_attr	struct,	as defined in <infiniband/verbs.h>.

       struct ibv_qp_open_attr {
	       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 */

       ibv_destroy_qp()	closes the opened QP and destroys the underlying QP if
       it has no other references.  qp.

RETURN VALUE
       ibv_open_qp() returns a pointer to the opened QP, or NULL  if  the  re-
       quest fails.  Check the QP number (qp_num) in the returned QP.

NOTES
       ibv_open_qp() will fail if a it is asked	to open	a QP that does not ex-
       ist within the xrcd with	the specified qp_num and qp_type.

SEE ALSO
       ibv_alloc_pd(3),	  ibv_create_qp(3),   ibv_create_qp_ex(3),    ibv_mod-
       ify_qp(3), ibv_query_qp(3)

AUTHORS
       Sean Hefty <sean.hefty@intel.com>

libibverbs			  2011-08-12			IBV_OPEN_QP(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | AUTHORS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=ibv_open_qp&sektion=3&manpath=FreeBSD+12.1-RELEASE+and+Ports>

home | help