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ibv_modify_cq(3) — Linux manual page

IBV_MODIFY_CQ(3)      Libibverbs Programmer's ManualIBV_MODIFY_CQ(3)

NAME        top

       ibv_modify_cq - modify a completion queue (CQ)

SYNOPSIS        top

#include <infiniband/verbs.h>int ibv_modify_cq(struct ibv_cq*cq, struct ibv_modify_cq_attr*cq_attr);

DESCRIPTION        top

ibv_modify_cq()modify a CQcq.  The argumentcq_attr is an       ibv_modify_cq_attr struct, as defined in <infiniband/verbs.h>.       struct ibv_moderate_cq {               uint16_t cq_count;  /* number of completions per event */               uint16_t cq_period; /* in micro seconds */       };       struct ibv_modify_cq_attr {                    uint32_t attr_mask;                    struct ibv_moderate_cq moderate;       };       The functionibv_modify_cq()will modify the CQ, based on the       givencq_attr->attr_mask

RETURN VALUE        top

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

SEE ALSO        top

ibv_create_cq(3)

AUTHORS        top

       Yonatan Cohen <yonatanc@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                      2017-10-20IBV_MODIFY_CQ(3)

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