-*- nroff -*-

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" );  "struct ibv_srq *ibv_create_xrc_srq(struct ibv_pd " "*pd" ",  " struct ibv_xrc_domain " "*xrc_domain" ",  " struct ibv_cq " "*xrc_cq" ",  " 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.

ibv_create_xrc_srq() creates an XRC shared receive queue (SRQ) associated with the protection domain pd, the XRC domain xrc_domain and the CQ which will hold the XRC completion xrc_cq.

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"
 ibv_alloc_pd (3),  ibv_modify_srq (3),  ibv_query_srq (3) 
 "AUTHORS"

Dotan Barak <dotanb@mellanox.co.il>