NAME

       rdma_get_remote_ece - Get remote ECE paraemters as received from the peer.

SYNOPSIS

              #include <rdma/rdma_cma.h>

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

DESCRIPTION

       rdma_get_remote_ece() get ECE parameters as were received from the communication peer.

       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 allow for the passive side to know ECE
       options of other side.

       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 = 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_set_local_ece(ece) <- set desired ECE options after respective libibverbs  provider
         masked unsupported options.

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

ARGUMENTS

       *id    RDMA communication identifier.

       *ece   ECE struct to be filled.

RETURN VALUE

       rdma_get_remote_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_set_local_ece(3)

AUTHOR

       Leon Romanovsky <leonro@mellanox.com>