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


ibv_create_srq, ibv_destroy_srq - create or destroy a shared receive queue (SRQ)


#include <infiniband/verbs.h>

struct ibv_srq *ibv_create_srq(struct ibv_pd *pd, struct 
                               ibv_srq_init_attr *srq_init_attr);

int ibv_destroy_srq(struct ibv_srq *srq);


ibv_create_srq() creates a shared receive queue (SRQ) associated with the protection domain pd. The argument srq_init_attr is an ibv_srq_init_attr struct, as defined in <infiniband/verbs.h>.

struct ibv_srq_init_attr {

void *srq_context; /* Associated context of the SRQ */ struct ibv_srq_attr attr; /* SRQ attributes */
struct ibv_srq_attr {
uint32_t max_wr; /* Requested max number of outstanding work requests (WRs) in the SRQ */ uint32_t max_sge; /* Requested max number of scatter elements per WR */ uint32_t srq_limit; /* The limit value of the SRQ (irrelevant for ibv_create_srq) */

The function ibv_create_srq() will update the srq_init_attr struct with the original values of the SRQ that was created; the values of max_wr and max_sge will be greater than or equal to the values requested.

ibv_destroy_srq() destroys the SRQ srq.


ibv_create_srq() returns a pointer to the created SRQ, or NULL if the request fails.

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


ibv_destroy_srq() fails if any queue pair is still associated with this SRQ.


ibv_alloc_pd(3), ibv_modify_srq(3), ibv_query_srq(3)


2006-10-31 libibverbs