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efadv_query_qp_wqs(3) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | NOTES | AUTHORS | COLOPHON 

EFADV_QUERY_QP_WQS(3)    EFA Direct Verbs Manual    EFADV_QUERY_QP_WQS(3)

NAME         top

       efadv_query_qp_wqs - Query EFA specific Queue Pair work queue
       attributes

SYNOPSIS         top

              #include <infiniband/efadv.h>

              int efadv_query_qp_wqs(struct ibv_qp *ibvqp, struct efadv_wq_attr *sq_attr,
                                     struct efadv_wq_attr *rq_attr, uint32_t inlen);

DESCRIPTION         top

       efadv_query_qp_wqs() queries device-specific Queue Pair work queue
       attributes.

       Compatibility is handled using the comp_mask and inlen fields.

              struct efadv_wq_attr {
                  uint64_t comp_mask;
                  uint8_t *buffer;
                  uint32_t entry_size;
                  uint32_t num_entries;
                  uint32_t *doorbell;
                  uint32_t max_batch;
                  uint8_t reserved[4];
              };

       inlen  In: Size of struct efadv_wq_attr.

       comp_mask
              Compatibility mask.

       buffer Queue buffer.

       entry_size
              Size of each entry in the queue.

       num_entries
              Maximal number of entries in the queue.

       doorbell
              Queue doorbell.

       max_batch
              Maximum batch size for queue submissions.

RETURN VALUE         top

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

SEE ALSO         top

       efadv(7)

NOTES         top

       • Compatibility mask (comp_mask) is an out field and currently has
         no values.

AUTHORS         top

       Michael Margolin ⟨mrgolin@amazon.com⟩

COLOPHON         top

       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

efa                             2025-05-14          EFADV_QUERY_QP_WQS(3)

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