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.\" -*- nroff -*-
.TH IBV_OPEN_DEVICE 3 2006-10-31 libibverbs "Libibverbs Programmer's Manual"
ibv_open_device, ibv_close_device \- open and close an RDMA device context
.B #include <infiniband/verbs.h>
.BI "struct ibv_context *ibv_open_device(struct ibv_device " "*device" ");
.BI "int ibv_close_device(struct ibv_context " "*context" ");
.B ibv_open_device()
opens the device
.I device
and creates a context for further use.
.B ibv_close_device()
closes the device context
.I context\fR.
.B ibv_open_device()
returns a pointer to the allocated device context, or NULL if the request fails.
.B ibv_close_device()
returns 0 on success, \-1 on failure.
.B ibv_close_device()
does not release all the resources allocated using context
.I context\fR.
To avoid resource leaks, the user should release all associated
resources before closing a context.
.BR ibv_get_device_list (3),
.BR ibv_query_device (3),
.BR ibv_query_port (3),
.BR ibv_query_gid (3),
.BR ibv_query_pkey (3)
Dotan Barak <>