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EFADV_QUERY_CQ(3)        EFA Direct Verbs Manual        EFADV_QUERY_CQ(3)
       efadv_query_cq - Query EFA specific Completion Queue attributes
              #include <infiniband/efadv.h>
              int efadv_query_cq(struct ibv_cq *ibvcq, struct efadv_cq_attr *attr,
                                 uint32_t inlen);
       efadv_query_cq() queries device-specific Completion Queue
       attributes.
       Compatibility is handled using the comp_mask and inlen fields.
              struct efadv_cq_attr {
                  uint64_t comp_mask;
                  uint8_t *buffer;
                  uint32_t entry_size;
                  uint32_t num_entries;
              };
       inlen  In: Size of struct efadv_cq_attr.
       comp_mask
              Compatibility mask.
       buffer Completion queue buffer.
       entry_size
              Size of each completion queue entry.
       num_entries
              Maximal number of entries in the completion queue.
       efadv_query_cq() returns 0 on success, or the value of errno on
       failure (which indicates the failure reason).
       efadv(7)
       • Compatibility mask (comp_mask) is an out field and currently has
         no values.
       Michael Margolin ⟨mrgolin@amazon.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
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       (which is not part of the original manual page), send a mail to
       man-pages@man7.org
efa                             2025-04-15              EFADV_QUERY_CQ(3)