|
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. |
|
|
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | AUTHORS | COLOPHON |
|
|
|
EFADV_CREATE_QP_EX(3) EFA Direct Verbs Manual EFADV_CREATE_QP_EX(3)
efadv_create_qp_ex - Create EFA specific extended Queue Pair
#include <infiniband/efadv.h>
struct ibv_qp *efadv_create_qp_ex(struct ibv_context *ibvctx,
struct ibv_qp_init_attr_ex *attr_ex,
struct efadv_qp_init_attr *efa_attr,
uint32_t inlen);
efadv_create_qp_ex() creates device-specific extended Queue Pair.
The argument attr_ex is an ibv_qp_init_attr_ex struct, as defined
in <infiniband/verbs.h>.
Use ibv_qp_to_qp_ex() to get the ibv_qp_ex for accessing the send
ops iterator interface, when QP create attr
IBV_QP_INIT_ATTR_SEND_OPS_FLAGS is used.
Scalable Reliable Datagram (SRD) transport provides reliable
out-of-order delivery, transparently utilizing multiple network
paths to reduce network tail latency. Its interface is similar to
UD, in particular it supports message size up to MTU, with error
handling extended to support reliable communication.
Compatibility is handled using the comp_mask and inlen fields.
struct efadv_qp_init_attr {
uint64_t comp_mask;
uint32_t driver_qp_type;
uint16_t flags;
uint8_t sl;
uint8_t reserved[1];
};
inlen In: Size of struct efadv_qp_init_attr.
comp_mask
Compatibility mask.
driver_qp_type
The type of QP to be created:
EFADV_QP_DRIVER_TYPE_SRD: Create an SRD QP.
flags
A bitwise OR of the values described below.
EFADV_QP_FLAGS_UNSOLICITED_WRITE_RECV: Receive WRs will not
be consumed for RDMA write with imm.
sl Service Level - 0 value implies default level.
efadv_create_qp_ex() returns a pointer to the created QP, or NULL
if the request fails.
efadv(7), ibv_create_qp_ex(3)
Gal Pressman ⟨galpress@amazon.com⟩ Daniel Kranzdorf
⟨dkkranzd@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 2019-08-06 EFADV_CREATE_QP_EX(3)
|
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. |
|