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ibv_modify_cq - Man Page

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@mellanox.com>

Info

2017-10-20 Libibverbs Programmer's Manual