NAME

       rdma_set_local_ece - Set local ECE paraemters to be used for REQ/REP communication.

SYNOPSIS

              #include <rdma/rdma_cma.h>

              int rdma_set_local_ece(struct rdma_cm_id *id, struct ibv_ece *ece);

DESCRIPTION

       rdma_set_local_ece() set local ECE parameters.

       This  function  is  suppose to be used by the users of external QPs.  The call needs to be
       performed before replying to the peer and needed to configure  RDMA_CM  with  desired  ECE
       options.

       Being  used  by  external QP and RDMA_CM doesn’t manage that QP, the peer needs to call to
       libibverbs API by itself.

       Usual flow for the passive side will be:

       • ibv_create_qp() <- create data QP.

       • ece = ibv_get_ece() <- get ECE from libibvers provider.

       • rdma_set_local_ece(ece) <- set desired ECE options.

       • rdma_connect() <- send connection request

       • ece = rdma_get_remote_ece() <- get ECE options from remote peer

       • ibv_set_ece(ece) <- set local ECE options with data received from the peer.

       • ibv_modify_qp() <- enable data QP.

       • rdma_accept()/rdma_establish()/rdma_reject_ece()

ARGUMENTS

       id     RDMA communication identifier.

       *ece   ECE parameters.

RETURN VALUE

       rdma_set_local_ece() returns 0 on success, or -1 on error.  If an error occurs, errno will
       be set to indicate the failure reason.

SEE ALSO

       rdma_cm(7), rdma_get_remote_ece(3)

AUTHOR

       Leon Romanovsky <leonro@mellanox.com>