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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | AUTHORS | COLOPHON |
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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 2024-06-14. (At
that time, the date of the most recent commit that was found in
the repository was 2024-06-10.) 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)
Pages that refer to this page: ibv_create_ah_from_wc(3), ibv_create_comp_channel(3), ibv_get_async_event(3), ibv_query_device(3), ibv_query_device_ex(3), ibv_query_rt_values_ex(3)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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