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/*
* Ouroboros - Copyright (C) 2016 - 2017
*
* Sets up a complete graph
*
* Dimitri Staessens <dimitri.staessens@ugent.be>
* Sander Vrijders <sander.vrijders@ugent.be>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define OUROBOROS_PREFIX "complete"
#include <ouroboros/config.h>
#include <ouroboros/shared.h>
#include <ouroboros/rib.h>
#include <ouroboros/dev.h>
#include <ouroboros/logs.h>
#include <ouroboros/errno.h>
#include <ouroboros/cacep.h>
#include "neighbors.h"
#include "ribconfig.h"
#include "ipcp.h"
#include "ae.h"
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#define COMPLETE_REFRESH 1000 /* ms */
struct complete {
struct nbs * nbs;
struct ae * ae;
pthread_t allocator;
pthread_t listener;
};
static void * listener(void * o)
{
struct complete * complete;
struct conn conn;
complete = (struct complete *) o;
while (true) {
if (connmgr_wait(complete->ae, &conn)) {
log_err("Error while getting next connection.");
continue;
}
if (nbs_add(complete->nbs, conn)) {
log_err("Failed to add neighbor.");
continue;
}
}
return (void *) 0;
}
static void path_reset(char * path)
{
path[strlen(MEMBERS_PATH)] = '\0';
}
static void * allocator(void * o)
{
qosspec_t qs;
ssize_t len;
char ** children;
ssize_t i;
struct complete * complete;
struct conn conn;
uint64_t addr;
char path[RIB_MAX_PATH_LEN];
struct timespec to = {(COMPLETE_REFRESH / 1000),
(COMPLETE_REFRESH % 1000) * 1000000};
strcpy(path, MEMBERS_PATH);
complete = (struct complete *) o;
qs.delay = 0;
qs.jitter = 0;
/* FIXME: implement QoS specs */
qs.cube = QOS_CUBE_BE;
while (true) {
len = rib_children(MEMBERS_PATH, &children);
for (i = 0; i < len; ++i) {
if (strcmp(children[i], ipcpi.name) != 0) {
path_reset(path);
rib_path_append(path, children[i]);
if (rib_read(path, &addr,
sizeof(addr)) !=
sizeof(addr)) {
log_err("Failed to read address.");
free(children[i]);
continue;
}
if (nbs_has(complete->nbs, addr)) {
free(children[i]);
continue;
}
if (connmgr_alloc(complete->ae, children[i],
&qs, &conn)) {
log_warn("Failed conn to neighbor.");
free(children[i]);
continue;
}
if (nbs_add(complete->nbs, conn)) {
log_err("Failed to add neighbor.");
free(children[i]);
continue;
}
}
free(children[i]);
}
if (len > 0)
free(children);
nanosleep(&to, NULL);
}
return (void *) 0;
}
void * complete_create(struct nbs * nbs,
struct ae * ae)
{
struct complete * complete;
complete = malloc(sizeof(*complete));
if (complete == NULL)
return NULL;
complete->nbs = nbs;
complete->ae = ae;
if (pthread_create(&complete->allocator, NULL,
allocator, (void *) complete))
return NULL;
if (pthread_create(&complete->listener, NULL,
listener, (void *) complete))
return NULL;
return complete;
}
void complete_destroy(void * ops_o)
{
struct complete * complete;
assert(ops_o);
complete = (struct complete *) ops_o;
pthread_cancel(complete->allocator);
pthread_cancel(complete->listener);
pthread_join(complete->allocator, NULL);
pthread_join(complete->listener, NULL);
free(complete);
}
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