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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | NOTES | AUTHORS | COLOPHON |
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EFADV_QUERY_MR(3) EFA Direct Verbs Manual EFADV_QUERY_MR(3)
efadv_query_mr - Query EFA specific Memory Region attributes
#include <infiniband/efadv.h>
int efadv_query_mr(struct ibv_mr *ibvmr, struct efadv_mr_attr *attr, uint32_t inlen);
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;
};
inlen In: Size of struct efadv_mr_attr.
comp_mask
Compatibility mask.
ic_id_validity
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.
recv_ic_id
Physical interconnect used by the device to reach the MR
for receive operation.
rdma_read_ic_id
Physical interconnect used by the device to reach the MR
for RDMA read operation.
rdma_recv_ic_id
Physical interconnect used by the device to reach the MR
for RDMA write receive.
efadv_query_mr() returns 0 on success, or the value of errno on
failure (which indicates the failure reason).
efadv(7)
• Compatibility mask (comp_mask) is an out field and currently has
no values.
Michael Margolin ⟨mrgolin@amazon.com⟩
This page is part of the rdma-core (RDMA Core Userspace Libraries
and Daemons) project. Information about the project can be found
at ⟨https://github.com/linux-rdma/rdma-core⟩. If you have a bug
report for this manual page, send it to
linux-rdma@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2025-08-04.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
efa 2023-11-13 EFADV_QUERY_MR(3)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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