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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | AUTHORS | COLOPHON |
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IBV_CREATE_SRQ_EX(3) Libibverbs Programmer's Manual IBV_CREATE_SRQ_EX(3)
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 / tag matching */
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_tm_cap tm_cap; /* Tag matching 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 */
};
struct ibv_tm_cap {
uint32_t max_num_tags; /* Tag matching list size */
uint32_t max_ops; /* Number of outstanding tag list operations */
};
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.
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).
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)
Yishai Hadas <yishaih@mellanox.com>
This page is part of the rdma-core (RDMA Core Userspace Libraries
and Daemons) project. Information about the project can be found
at ⟨https://github.com/linux-rdma/rdma-core⟩. If you have a bug
report for this manual page, send it to
linux-rdma@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2025-08-04.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
libibverbs 2013-06-26 IBV_CREATE_SRQ_EX(3)
Pages that refer to this page: ibv_get_srq_num(3), ibv_open_xrcd(3), ibv_post_srq_ops(3)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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