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

ibv_modify_cq - modify a completion queue (CQ)

#include <infiniband/verbs.h>

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

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

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


2017-10-20 libibverbs