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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | AUTHORS | COLOPHON |
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IBV_QUE...LUES_EX(3) Libibverbs Programmer's Manual IBV_QUE...LUES_EX(3)
ibv_query_rt_values_ex - query an RDMA device for some real time
values
#include <infiniband/verbs.h>
int ibv_query_rt_values_ex(struct ibv_context *context,
struct ibv_values_ex *values);
ibv_query_rt_values_ex() returns certain real time values of a
device context. The argument attr is a pointer to an
ibv_device_attr_ex struct, as defined in <infiniband/verbs.h>.
struct ibv_values_ex {
uint32_t comp_mask; /* Compatibility mask that defines the query/queried fields [in/out] */
struct timespec raw_clock; /* HW raw clock */
};
enum ibv_values_mask {
IBV_VALUES_MASK_RAW_CLOCK = 1 << 0, /* HW raw clock */
};
ibv_query_rt_values_ex() returns 0 on success, or the value of
errno on failure (which indicates the failure reason).
This extension verb only calls the provider, the provider has to
query this value somehow and mark the queried values in the
comp_mask field.
ibv_query_device(3), ibv_open_device(3), ibv_query_port(3),
ibv_query_pkey(3), ibv_query_gid(3)
Matan Barak <matanb@mellanox.com>
Yishai Hadas <yishaih@mellanox.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 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2025-08-04.) 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 2016-2-20 IBV_QUE...LUES_EX(3)
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HTML rendering created 2025-09-06 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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