|
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | AUTHORS | COLOPHON |
IBV_OPEN_DEVICE(3) Libibverbs Programmer's Manual IBV_OPEN_DEVICE(3)
ibv_open_device, ibv_close_device - open and close an RDMA device
context
#include <infiniband/verbs.h>
struct ibv_context *ibv_open_device(struct ibv_device *device);
int ibv_close_device(struct ibv_context *context);
ibv_open_device() opens the device device and creates a context for
further use.
ibv_close_device() closes the device context context.
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.
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.
ibv_get_device_list(3), ibv_query_device(3), ibv_query_port(3),
ibv_query_gid(3), ibv_query_pkey(3)
Dotan Barak <dotanba@gmail.com>
This page is part of the rdma-core (RDMA Core Userspace Libraries and
Daemons) project. Information about the project can be found at
⟨https://github.com/linux-rdma/rdma-core⟩. If you have a bug report
for this manual page, send it to linux-rdma@vger.kernel.org. This
page was obtained from the project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2020-08-13. (At
that time, the date of the most recent commit that was found in the
repository was 2020-08-05.) If you discover any rendering problems
in this HTML version of the page, or you believe there is a better or
more up-to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not part
of the original manual page), send a mail to man-pages@man7.org
libibverbs 2006-10-31 IBV_OPEN_DEVICE(3)