EFADV_QUERY_AH

Section: EFA Direct Verbs Manual (3)
Updated: 2019-05-19
Page Index

NAME

efadv_query_ah - Query EFA specific Address Handle attributes


#include <infiniband/efadv.h>

int efadv_query_ah(struct ibv_ah *ibvah, struct efadv_ah_attr *attr,
           uint32_t inlen);

efadv_query_ah() queries device-specific Address Handle attributes.

Compatibility is handled using the comp_mask and inlen fields.


struct efadv_ah_attr {
    uint64_t comp_mask;
    uint16_t ahn;
    uint8_t reserved[6];
};

inlen

In: Size of struct efadv_ah_attr.

comp_mask

Compatibility mask.

ahn

Device's Address Handle number.

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

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