table of contents
| HNSDV_CREATE_QP(3) | HNS Programmer’s Manual | HNSDV_CREATE_QP(3) |
NAME¶
hnsdv_create_qp - creates a HNS specific queue pair (QP)
SYNOPSIS¶
-
#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);
DESCRIPTION¶
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¶
-
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.
SEE ALSO¶
AUTHOR¶
Junxian Huang huangjunxian6@hisilicon.com
| 2024-02-06 | hns |