static int mca_btl_mvapi_endpoint_send_eager_rdma(
mca_btl_base_endpoint_t* endpoint)
{
mca_btl_mvapi_module_t* mvapi_btl = endpoint->endpoint_btl;
mca_btl_mvapi_eager_rdma_header_t *rdma_hdr;
mca_btl_mvapi_frag_t* frag;
int rc;
MCA_BTL_IB_FRAG_ALLOC_EAGER(mvapi_btl, frag, rc);
if(NULL == frag) {
BTL_ERROR(("error allocating fragment"));
return -1;
}
frag->base.des_cbfunc = mca_btl_mvapi_endpoint_eager_rdma;
frag->base.des_cbdata = NULL;
frag->endpoint = endpoint;
frag->base.des_flags |= MCA_BTL_DES_FLAGS_PRIORITY;
frag->hdr->tag = MCA_BTL_TAG_BTL;
rdma_hdr = (mca_btl_mvapi_eager_rdma_header_t*)frag->segment.seg_addr.pval;
rdma_hdr->control.type = MCA_BTL_MVAPI_CONTROL_RDMA;
rdma_hdr->rkey = endpoint->eager_rdma_local.reg->r_key;
rdma_hdr->rdma_start.lval = ompi_ptr_ptol(endpoint->eager_rdma_local.base.pval);
frag->segment.seg_len = sizeof(mca_btl_mvapi_eager_rdma_header_t);
if (mca_btl_mvapi_endpoint_post_send(mvapi_btl, endpoint, frag) !=
OMPI_SUCCESS) {
MCA_BTL_IB_FRAG_RETURN(mvapi_btl, frag);
BTL_ERROR(("Error sending RDMA buffer", strerror(errno)));
return -1;
}
return 0;
}
/* send the eager rdma connect message to the remote endpoint */
static int mca_btl_wv_endpoint_send_eager_rdma(
mca_btl_base_endpoint_t* endpoint)
{
mca_btl_wv_module_t* wv_btl = endpoint->endpoint_btl;
mca_btl_wv_eager_rdma_header_t *rdma_hdr;
mca_btl_wv_send_control_frag_t* frag;
int rc;
frag = alloc_control_frag(wv_btl);
if(NULL == frag) {
return -1;
}
to_base_frag(frag)->base.des_cbfunc =
mca_btl_wv_endpoint_eager_rdma_connect_cb;
to_base_frag(frag)->base.des_cbdata = NULL;
to_base_frag(frag)->base.des_flags |= MCA_BTL_DES_FLAGS_PRIORITY|MCA_BTL_DES_SEND_ALWAYS_CALLBACK;
to_base_frag(frag)->base.order = mca_btl_wv_component.credits_qp;
to_base_frag(frag)->segment.base.seg_len =
sizeof(mca_btl_wv_eager_rdma_header_t);
to_com_frag(frag)->endpoint = endpoint;
frag->hdr->tag = MCA_BTL_TAG_BTL;
rdma_hdr = (mca_btl_wv_eager_rdma_header_t*)to_base_frag(frag)->segment.base.seg_addr.pval;
rdma_hdr->control.type = MCA_BTL_WV_CONTROL_RDMA;
rdma_hdr->rkey = endpoint->eager_rdma_local.reg->mr->rkey;
rdma_hdr->rdma_start.lval = ompi_ptr_ptol(endpoint->eager_rdma_local.base.pval);
BTL_VERBOSE(("sending rkey %" PRIu32 ", rdma_start.lval %" PRIx64
", pval %p, ival %" PRIu32 " type %d and sizeof(rdma_hdr) %d\n",
rdma_hdr->rkey,
rdma_hdr->rdma_start.lval,
rdma_hdr->rdma_start.pval,
rdma_hdr->rdma_start.ival,
rdma_hdr->control.type,
(int) sizeof(mca_btl_wv_eager_rdma_header_t)
));
if(endpoint->nbo) {
BTL_WV_EAGER_RDMA_CONTROL_HEADER_HTON((*rdma_hdr));
BTL_VERBOSE(("after HTON: sending rkey %" PRIu32 ", rdma_start.lval %" PRIx64 ", pval %p, ival %" PRIu32 "\n",
rdma_hdr->rkey,
rdma_hdr->rdma_start.lval,
rdma_hdr->rdma_start.pval,
rdma_hdr->rdma_start.ival
));
}
rc = mca_btl_wv_endpoint_send(endpoint, frag);
if (OMPI_SUCCESS == rc || OMPI_ERR_RESOURCE_BUSY == rc)
return OMPI_SUCCESS;
MCA_BTL_IB_FRAG_RETURN(frag);
BTL_ERROR(("Error sending RDMA buffer: %s", strerror(errno)));
return rc;
}