layout: page title: EFADV_QUERY_AH section: 3 tagline: Verbs date: 2019-05-19 header: “EFA Direct Verbs Manual” footer: efa

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).