hnsdv_create_qp3
Creates a hns specific queue pair (qp)
Usage
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#include <infiniband/hnsdv.h> struct ibv_qp *hnsdv_create_qp(struct ibv_context *context, struct ibv_qp_init_attr_ex *qp_attr, struct hnsdv_qp_init_attr *hns_attr);
Overview
hnsdv_create_qp() creates a HNS specific queue pair (QP) with specific driver properties.
Arguments
Please see ibv_create_qp_ex(3) man page for context and qp_attr.
hns_attr
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struct hnsdv_qp_init_attr { uint64_t comp_mask; uint32_t create_flags; uint8_t congest_type; uint8_t reserved[3]; };
- comp_mask
-
Bitmask specifying what fields in the structure are valid:
-
HNSDV_QP_INIT_ATTR_MASK_QP_CONGEST_TYPE: Valid values in congest_type. Allow setting a congestion control algorithm for QP.
- create_flags
-
Enable the QP of a feature.
- congest_type
-
Type of congestion control algorithm:
HNSDV_QP_CREATE_ENABLE_DCQCN: Data Center Quantized Congestion Notification HNSDV_QP_CREATE_ENABLE_LDCP: Low Delay Control Protocol HNSDV_QP_CREATE_ENABLE_HC3: Huawei Converged Congestion Control HNSDV_QP_CREATE_ENABLE_DIP: Destination IP based Quantized Congestion Notification
Return value
hnsdv_create_qp() returns a pointer to the created QP, on error NULL will be returned and errno will be set.
Releases
2 releases since Debian 13 (Trixie); the text changed 1 time.