IBV_OPEN_DEVICE(3) Libibverbs Programmer's Manual IBV_OPEN_DEVICE(3)
NAME
ibv_open_device, ibv_close_device - open and close an RDMA device con-
text
SYNOPSIS
#include <infiniband/verbs.h>
struct ibv_context *ibv_open_device(struct ibv_device *device);
int ibv_close_device(struct ibv_context *context);
DESCRIPTION
ibv_open_device() opens the device device and creates a context for
further use.
ibv_close_device() closes the device context context.
RETURN VALUE
ibv_open_device() returns a pointer to the allocated device context, or
NULL if the request fails.
ibv_close_device() returns 0 on success, -1 on failure.
NOTES
ibv_close_device() does not release all the resources allocated using
context context. To avoid resource leaks, the user should release all
associated resources before closing a context.
Setting the environment variable **RDMAV_ALLOW_DISASSOC_DESTROY** tells
the library to relate an EIO from destroy commands as a success as the
kernel resources were already released. This comes to prevent memory
leakage in the user space area upon device disassociation. Applications
using this flag cannot call ibv_get_cq_event or ibv_get_async_event
concurrently with any call to an object destruction function.
SEE ALSO
ibv_get_device_list(3), ibv_query_device(3), ibv_query_port(3),
ibv_query_gid(3), ibv_query_pkey(3)
AUTHORS
Dotan Barak <dotanba@gmail.com>
libibverbs 2006-10-31 IBV_OPEN_DEVICE(3)
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