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EFADV_QUERY_MR(3) EFA Direct Verbs Manual EFADV_QUERY_MR(3)

NAME

efadv_query_mr - Query EFA specific Memory Region attributes

SYNOPSIS

#include <infiniband/efadv.h>
int efadv_query_mr(struct ibv_mr *ibvmr, struct efadv_mr_attr *attr, uint32_t inlen);
    

DESCRIPTION

efadv_query_mr() queries device-specific Memory Region attributes.

Compatibility is handled using the comp_mask and inlen fields.

struct efadv_mr_attr {

uint64_t comp_mask;
uint16_t ic_id_validity;
uint16_t recv_ic_id;
uint16_t rdma_read_ic_id;
uint16_t rdma_recv_ic_id; };
In: Size of struct efadv_mr_attr.
Compatibility mask.
Validity mask of interconnect id fields:

EFADV_MR_ATTR_VALIDITY_RECV_IC_ID: recv_ic_id has a valid value.

EFADV_MR_ATTR_VALIDITY_RDMA_READ_IC_ID: rdma_read_ic_id has a valid value.

EFADV_MR_ATTR_VALIDITY_RDMA_RECV_IC_ID: rdma_recv_ic_id has a valid value.

Physical interconnect used by the device to reach the MR for receive operation.
Physical interconnect used by the device to reach the MR for RDMA read operation.
Physical interconnect used by the device to reach the MR for RDMA write receive.

RETURN VALUE

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

SEE ALSO

efadv(7)

NOTES

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

AUTHORS

Michael Margolin mrgolin@amazon.com

2023-11-13 efa