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
       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.

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)