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/*
* Copyright (c) 2004-2008 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2011 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006 Sandia National Laboratories. All rights
* reserved.
* Copyright (c) 2008-2019 Cisco Systems, Inc. All rights reserved
* Copyright (c) 2012 Los Alamos National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include "opal_stdint.h"
#include "opal/constants.h"
#include "opal/mca/btl/base/base.h"
#include "opal/mca/btl/btl.h"
#include "btl_usnic.h"
#include "btl_usnic_ack.h"
#include "btl_usnic_frag.h"
#include "btl_usnic_send.h"
#include "btl_usnic_util.h"
/*
* This function is called when a send of a segment completes that is
* the one-and-only segment of an MPI message. Return the WQE and
* also return the segment if no ACK pending.
*/
void opal_btl_usnic_frag_send_complete(opal_btl_usnic_module_t *module,
opal_btl_usnic_send_segment_t *sseg)
{
opal_btl_usnic_send_frag_t *frag;
frag = sseg->ss_parent_frag;
/* Reap a frag that was sent */
--sseg->ss_send_posted;
--frag->sf_seg_post_cnt;
/* checks for returnability made inside */
opal_btl_usnic_endpoint_t *ep = frag->sf_endpoint;
opal_btl_usnic_send_frag_return_cond(module, frag);
// In a short frag segment, the sseg is embedded in the frag. So
// there's no need to return the sseg (because we already returned
// the frag).
/* do bookkeeping */
++ep->endpoint_send_credits;
/* see if this endpoint needs to be made ready-to-send */
opal_btl_usnic_check_rts(ep);
++module->mod_channels[sseg->ss_channel].credits;
}
/*
* This function is called when a send segment completes that is part
* of a larger MPI message (ie., there may still be other chunk
* segments that have not yet completed sending). Return the WQE and
* also return the segment if no ACK pending.
*/
void opal_btl_usnic_chunk_send_complete(opal_btl_usnic_module_t *module,
opal_btl_usnic_send_segment_t *sseg)
{
opal_btl_usnic_send_frag_t *frag;
frag = sseg->ss_parent_frag;
/* Reap a frag that was sent */
--sseg->ss_send_posted;
--frag->sf_seg_post_cnt;
if (sseg->ss_send_posted == 0 && !sseg->ss_ack_pending) {
opal_btl_usnic_release_send_segment(module, frag, sseg);
}
/* done with whole fragment? */
/* checks for returnability made inside */
opal_btl_usnic_send_frag_return_cond(module, frag);
/* do bookkeeping */
++frag->sf_endpoint->endpoint_send_credits;
/* see if this endpoint needs to be made ready-to-send */
opal_btl_usnic_check_rts(frag->sf_endpoint);
++module->mod_channels[sseg->ss_channel].credits;
}
/* Responsible for completing non-fastpath parts of a put or send operation,
* including initializing any large frag bookkeeping fields and enqueuing the
* frag on the endpoint.
*
* This routine lives in this file to help prevent automatic inlining by the
* compiler.
*
* The "tag" only applies to sends.
*/
int opal_btl_usnic_finish_put_or_send(opal_btl_usnic_module_t *module,
opal_btl_usnic_endpoint_t *endpoint,
opal_btl_usnic_send_frag_t *frag, mca_btl_base_tag_t tag)
{
int rc;
opal_btl_usnic_small_send_frag_t *sfrag;
opal_btl_usnic_send_segment_t *sseg;
/*
* If this is small, need to do the copyin now.
* We don't do this earlier in case we got lucky and were
* able to do an inline send. We did not, so here we are...
*/
if (frag->sf_base.uf_type == OPAL_BTL_USNIC_FRAG_SMALL_SEND) {
sfrag = (opal_btl_usnic_small_send_frag_t *) frag;
sseg = &sfrag->ssf_segment;
/* Copy in user data if there is any, collapsing 2 segments into 1.
* We already packed via the convertor if necessary, so we only need to
* handle the simple memcpy case here.
*/
if (frag->sf_base.uf_base.USNIC_SEND_LOCAL_COUNT > 1) {
/* no convertor */
assert(NULL != frag->sf_base.uf_local_seg[1].seg_addr.pval);
memcpy(((char *) (intptr_t) frag->sf_base.uf_local_seg[0].seg_addr.lval
+ frag->sf_base.uf_local_seg[0].seg_len),
frag->sf_base.uf_local_seg[1].seg_addr.pval,
frag->sf_base.uf_local_seg[1].seg_len);
/* update 1st segment length */
frag->sf_base.uf_base.USNIC_SEND_LOCAL_COUNT = 1;
frag->sf_base.uf_local_seg[0].seg_len += frag->sf_base.uf_local_seg[1].seg_len;
}
sseg->ss_len = sizeof(opal_btl_usnic_btl_header_t) + frag->sf_size;
/* use standard channel */
sseg->ss_channel = USNIC_DATA_CHANNEL;
sseg->ss_base.us_btl_header->tag = tag;
} else {
opal_btl_usnic_large_send_frag_t *lfrag;
/* Save info about the frag so that future invocations of
* usnic_handle_large_send can generate segments to put on the wire. */
lfrag = (opal_btl_usnic_large_send_frag_t *) frag;
lfrag->lsf_tag = tag;
lfrag->lsf_cur_offset = 0;
lfrag->lsf_cur_ptr = lfrag->lsf_des_src[0].seg_addr.pval;
lfrag->lsf_cur_sge = 0;
lfrag->lsf_bytes_left_in_sge = lfrag->lsf_des_src[0].seg_len;
lfrag->lsf_bytes_left = frag->sf_size;
if (lfrag->lsf_pack_on_the_fly) {
lfrag->lsf_pack_bytes_left = frag->sf_size;
} else {
/* we pre-packed the convertor into a chain in prepare_src */
lfrag->lsf_pack_bytes_left = 0;
}
}
/* queue this fragment into the send engine */
rc = opal_btl_usnic_endpoint_enqueue_frag(endpoint, frag);
return rc;
}
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