-*- nroff -*-
Licensed under the OpenIB.org BSD license (FreeBSD Variant) - See COPYING.md

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

 #include <infiniband/verbs.h>  "struct ibv_srq *ibv_create_srq_ex(struct ibv_context " "*context" ", struct "  " ibv_srq_init_attr_ex " "*srq_init_attr_ex" );  "int ibv_destroy_srq(struct ibv_srq " "*srq" ); 

ibv_create_srq_ex() creates a shared receive queue (SRQ) supporting both basic and xrc modes. The argument srq_init_attr_ex is an ibv_srq_init_attr_ex struct, as defined in <infiniband/verbs.h>.

struct ibv_srq_init_attr_ex {
void *srq_context; /* Associated context of the SRQ */
struct ibv_srq_attr attr; /* SRQ attributes */
uint32_t comp_mask; /* Identifies valid fields */
enum ibv_srq_type srq_type; /* Basic / XRC */
struct ibv_pd *pd; /* PD associated with the SRQ */
struct ibv_xrcd *xrcd; /* XRC domain to associate with the SRQ */
struct ibv_cq *cq; /* CQ to associate with the SRQ for XRC mode */
};
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 */
};


The function
 ibv_create_srq_ex() will update the
 srq_init_attr_ex 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_ex() 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"

Yishai Hadas <yishaih@mellanox.com>