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-order delivery, transparently utiliz‐
       ing 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;
                  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@amazon.com>

efa                                                2019-08-06                              EFADV_CREATE_QP_EX(3)