ibv_create_srq, ibv_destroy_srq — create or destroy a shared receive queue (SRQ)
Synopsis
#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);Description
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.
Return Value
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).
Notes
ibv_destroy_srq() fails if any queue pair is still associated with this SRQ.
See Also
Referenced By
ibv_alloc_pd(3), ibv_modify_srq(3), ibv_query_srq(3), rdma_create_srq(3), rdma_destroy_srq(3).
The man page ibv_destroy_srq(3) is an alias of ibv_create_srq(3).