ucs_status_t ucp_wireup_msg_progress(uct_pending_req_t *self)
{
ucp_request_t *req = ucs_container_of(self, ucp_request_t, send.uct);
ucp_ep_h ep = req->send.ep;
ssize_t packed_len;
if (req->send.wireup.type == UCP_WIREUP_MSG_REQUEST) {
if (ep->flags & UCP_EP_FLAG_REMOTE_CONNECTED) {
ucs_trace("ep %p: not sending wireup message - remote already connected",
ep);
goto out;
}
}
/* send the active message */
if (req->send.wireup.type == UCP_WIREUP_MSG_ACK) {
req->send.lane = ucp_ep_get_am_lane(ep);
} else {
req->send.lane = ucp_ep_get_wireup_msg_lane(ep);
}
packed_len = uct_ep_am_bcopy(ep->uct_eps[req->send.lane], UCP_AM_ID_WIREUP,
ucp_wireup_msg_pack, req);
if (packed_len < 0) {
if (packed_len != UCS_ERR_NO_RESOURCE) {
ucs_error("failed to send wireup: %s", ucs_status_string(packed_len));
}
return (ucs_status_t)packed_len;
}
out:
ucp_request_complete_send(req, UCS_OK);
return UCS_OK;
}
static ucs_status_t ucp_tag_req_start_contig(ucp_request_t *req, size_t count,
ssize_t max_short, size_t zcopy_thresh,
size_t rndv_thresh,
const ucp_proto_t *proto)
{
ucp_ep_config_t *config = ucp_ep_config(req->send.ep);
size_t only_hdr_size = proto->only_hdr_size;
ucs_status_t status;
size_t max_zcopy;
ssize_t length;
length = ucp_contig_dt_length(req->send.datatype, count);
req->send.length = length;
if (length <= max_short) {
/* short */
req->send.uct.func = proto->contig_short;
} else if (length >= rndv_thresh) {
/* rendezvous */
status = ucp_tag_send_start_rndv(req);
if (status != UCS_OK) {
return status;
}
} else if (length < zcopy_thresh) {
/* bcopy */
if (req->send.length <= config->max_am_bcopy - only_hdr_size) {
req->send.uct.func = proto->bcopy_single;
} else {
req->send.uct.func = proto->bcopy_multi;
}
} else {
/* eager zcopy */
status = ucp_request_send_buffer_reg(req, ucp_ep_get_am_lane(req->send.ep));
if (status != UCS_OK) {
return status;
}
req->send.uct_comp.func = proto->contig_zcopy_completion;
max_zcopy = config->max_am_zcopy;
if (req->send.length <= max_zcopy - only_hdr_size) {
req->send.uct_comp.count = 1;
req->send.uct.func = proto->contig_zcopy_single;
} else {
/* calculate number of zcopy fragments */
req->send.uct_comp.count = 1 +
(length + proto->first_hdr_size - proto->mid_hdr_size - 1) /
(max_zcopy - proto->mid_hdr_size);
req->send.uct.func = proto->contig_zcopy_multi;
}
}
return UCS_OK;
}
static ucs_status_t ucp_tag_eager_contig_short(uct_pending_req_t *self)
{
ucp_request_t *req = ucs_container_of(self, ucp_request_t, send.uct);
ucp_ep_t *ep = req->send.ep;
ucs_status_t status;
req->send.lane = ucp_ep_get_am_lane(ep);
status = uct_ep_am_short(ep->uct_eps[req->send.lane], UCP_AM_ID_EAGER_ONLY,
req->send.tag.tag, req->send.buffer, req->send.length);
if (status != UCS_OK) {
return status;
}
ucp_request_complete_send(req, UCS_OK);
return UCS_OK;
}
static size_t ucp_tag_pack_eager_first_dt(void *dest, void *arg)
{
ucp_eager_first_hdr_t *hdr = dest;
ucp_request_t *req = arg;
size_t length;
ucs_assert(req->send.lane == ucp_ep_get_am_lane(req->send.ep));
length = ucp_ep_get_max_bcopy(req->send.ep, req->send.lane) -
sizeof(*hdr);
hdr->super.super.tag = req->send.tag.tag;
hdr->total_len = req->send.length;
hdr->msg_id = req->send.tag.message_id;
ucs_assert(req->send.state.dt.offset == 0);
ucs_assert(req->send.length > length);
return sizeof(*hdr) + ucp_dt_pack(req->send.datatype, hdr + 1,
req->send.buffer, &req->send.state.dt,
length);
}