NAME

       ibv_open_device, ibv_close_device - open and close an RDMA device context

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>