Movatterモバイル変換

ibv_query_rt_values_ex(3) — Linux manual page

IBV_QUE...LUES_EX(3)  Libibverbs Programmer's ManualIBV_QUE...LUES_EX(3)

NAME        top

       ibv_query_rt_values_ex - query an RDMA device for some real time       values

SYNOPSIS        top

#include <infiniband/verbs.h>int ibv_query_rt_values_ex(struct ibv_context*context,struct ibv_values_ex*values);

DESCRIPTION        top

ibv_query_rt_values_ex()returns certain real time values of a       devicecontext.  The argumentattr 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 */       };

RETURN VALUE        top

ibv_query_rt_values_ex()returns 0 on success, or the value of       errno on failure (which indicates the failure reason).

NOTES        top

       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.

SEE ALSO        top

ibv_query_device(3),ibv_open_device(3),ibv_query_port(3),ibv_query_pkey(3),ibv_query_gid(3)

AUTHORS        top

       Matan Barak <matanb@mellanox.com>       Yishai Hadas <yishaih@mellanox.com>

COLOPHON        top

       This page is part of therdma-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 isnot part of the original manual page), send a mail to       man-pages@man7.orglibibverbs                      2016-2-20IBV_QUE...LUES_EX(3)

HTML rendering created 2025-09-06 byMichael Kerrisk, author ofThe Linux Programming Interface. For details of in-depthLinux/UNIX system programming training courses that I teach, lookhere. Hosting byjambit GmbH.