ibv_modify_cq (3) Linux Manual Page

ibv_modify_cq – modify a completion queue (CQ)

Synopsis

#include <infiniband/verbs.h>

int ibv_modify_cq(struct ibv_cq *cq, struct ibv_modify_cq_attr *cq_attr);

Description

ibv_modify_cq() modify a CQ cq. The argument cq_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 function ibv_modify_cq() will modify the CQ, based on the given cq_attr->attr_mask

Return Value

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

See Also

ibv_create_cq(3)

Authors

Yonatan Cohen <yonatanc [at] mellanox.com>