efadv_query_qp_wqs(3)

Query EFA specific Queue Pair work queue attributes

NAME

efadv_query_qp_wqs - Query EFA specific Queue Pair work queue attributes

SYNOPSIS

#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

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;
    uint16_t caps;
    uint8_t reserved[2];
};

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.

caps: Work queue capabilities:

EFADV_WQ_CAPS_64_BIT_REQ_ID Work queue supports posting requests with 64-bit IDs. When set, the associated completion queue is guaranteed to return 64-bit request IDs as well.

RETURN VALUE

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

SEE ALSO

NOTES

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

AUTHORS

Michael Margolin ⟨[email protected]⟩\c