EFADV_CREATE_QP_EX(3) EFA Direct Verbs Manual EFADV_CREATE_QP_EX(3)
NAME
efadv_create_qp_ex - Create EFA specific extended Queue Pair
SYNOPSIS
#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);
DESCRIPTION
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-or-
der 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 sup-
port 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;
uint8_t reserved[4];
};
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.
RETURN VALUE
efadv_create_qp_ex() returns a pointer to the created QP, or NULL if
the request fails.
SEE ALSO
efadv(7), ibv_create_qp_ex(3)
AUTHORS
Gal Pressman <galpress@amazon.com> Daniel Kranzdorf <dkkranzd@ama-
zon.com>
efa 2019-08-06 EFADV_CREATE_QP_EX(3)
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