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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | AUTHORS | COLOPHON |
IBV_QUERY_RT_VALUES_EX(3)bibverbs Programmer's ManualV_QUERY_RT_VALUES_EX(3)
ibv_query_rt_values_ex - query an RDMA device for some real time val‐
ues
#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 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 2016-2-20 IBV_QUERY_RT_VALUES_EX(3)