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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 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) 2007 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2013-2014 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2015 Intel, Inc. All rights reserved
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include "opal/prefetch.h"
#include "opal/types.h"
#include "btl_usnic.h"
#include "btl_usnic_ack.h"
#include "btl_usnic_endpoint.h"
#include "btl_usnic_frag.h"
#include "btl_usnic_module.h"
#include "btl_usnic_proc.h"
#include "btl_usnic_send.h"
#include "btl_usnic_util.h"
/*
* Construct/destruct an endpoint structure.
*/
static void endpoint_construct(mca_btl_base_endpoint_t *endpoint)
{
int i;
endpoint->endpoint_module = NULL;
endpoint->endpoint_proc = NULL;
endpoint->endpoint_proc_index = -1;
endpoint->endpoint_exiting = false;
endpoint->endpoint_connectivity_checked = false;
endpoint->endpoint_on_all_endpoints = false;
for (i = 0; i < USNIC_NUM_CHANNELS; ++i) {
endpoint->endpoint_remote_modex.ports[i] = 0;
endpoint->endpoint_remote_addrs[i] = FI_ADDR_NOTAVAIL;
}
endpoint->endpoint_send_credits = 8;
/* list of fragments queued to be sent */
OBJ_CONSTRUCT(&endpoint->endpoint_frag_send_queue, opal_list_t);
endpoint->endpoint_next_frag_id = 1;
endpoint->endpoint_acktime = 0;
/* endpoint starts not-ready-to-send */
endpoint->endpoint_ready_to_send = 0;
endpoint->endpoint_ack_needed = false;
/* clear sent/received sequence number array */
memset(endpoint->endpoint_sent_segs, 0, sizeof(endpoint->endpoint_sent_segs));
memset(endpoint->endpoint_rcvd_segs, 0, sizeof(endpoint->endpoint_rcvd_segs));
/*
* Make a new OPAL hotel for this module
* "hotel" is a construct used for triggering segment retransmission
* due to timeout
*/
OBJ_CONSTRUCT(&endpoint->endpoint_hotel, opal_hotel_t);
opal_hotel_init(&endpoint->endpoint_hotel, WINDOW_SIZE, opal_sync_event_base,
mca_btl_usnic_component.retrans_timeout, 0, opal_btl_usnic_ack_timeout);
/* Setup this endpoint's list links */
OBJ_CONSTRUCT(&(endpoint->endpoint_ack_li), opal_list_item_t);
OBJ_CONSTRUCT(&(endpoint->endpoint_endpoint_li), opal_list_item_t);
endpoint->endpoint_ack_needed = false;
/* fragment reassembly info */
endpoint->endpoint_rx_frag_info = calloc(sizeof(struct opal_btl_usnic_rx_frag_info_t),
MAX_ACTIVE_FRAGS);
assert(NULL != endpoint->endpoint_rx_frag_info);
if (OPAL_UNLIKELY(endpoint->endpoint_rx_frag_info == NULL)) {
BTL_ERROR(("calloc returned NULL -- this should not happen!"));
opal_btl_usnic_exit(endpoint->endpoint_module);
/* Does not return */
}
}
static void endpoint_destruct(mca_btl_base_endpoint_t *endpoint)
{
opal_btl_usnic_proc_t *proc;
if (endpoint->endpoint_ack_needed) {
opal_btl_usnic_remove_from_endpoints_needing_ack(endpoint);
}
OBJ_DESTRUCT(&(endpoint->endpoint_ack_li));
/* Remove the endpoint from the all_endpoints list */
opal_btl_usnic_module_t *module = endpoint->endpoint_module;
opal_mutex_lock(&module->all_endpoints_lock);
if (endpoint->endpoint_on_all_endpoints) {
opal_list_remove_item(&module->all_endpoints, &endpoint->endpoint_endpoint_li);
endpoint->endpoint_on_all_endpoints = false;
}
opal_mutex_unlock(&module->all_endpoints_lock);
OBJ_DESTRUCT(&(endpoint->endpoint_endpoint_li));
if (endpoint->endpoint_hotel.rooms != NULL) {
OBJ_DESTRUCT(&(endpoint->endpoint_hotel));
}
OBJ_DESTRUCT(&endpoint->endpoint_frag_send_queue);
/* release owning proc */
proc = endpoint->endpoint_proc;
if (NULL != proc) {
proc->proc_endpoints[endpoint->endpoint_proc_index] = NULL;
OBJ_RELEASE(proc);
}
free(endpoint->endpoint_rx_frag_info);
}
OBJ_CLASS_INSTANCE(opal_btl_usnic_endpoint_t, opal_list_item_t, endpoint_construct,
endpoint_destruct);
/*
* Forcibly drain all pending output on an endpoint, without waiting for
* actual completion.
*/
void opal_btl_usnic_flush_endpoint(opal_btl_usnic_endpoint_t *endpoint)
{
opal_btl_usnic_send_frag_t *frag;
/* First, free all pending fragments */
while (!opal_list_is_empty(&endpoint->endpoint_frag_send_queue)) {
frag = (opal_btl_usnic_send_frag_t *) opal_list_remove_first(
&endpoint->endpoint_frag_send_queue);
/* _cond still needs to check ownership, but make sure the
* fragment is marked as done.
*/
frag->sf_ack_bytes_left = 0;
frag->sf_seg_post_cnt = 0;
opal_btl_usnic_send_frag_return_cond(endpoint->endpoint_module, frag);
}
/* Now, ACK everything that is pending */
opal_btl_usnic_handle_ack(endpoint, endpoint->endpoint_next_seq_to_send - 1);
}
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