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/*
* Copyright (c) 2009-2014, The Regents of the University of California,
* through Lawrence Berkeley National Laboratory (subject to receipt of any
* required approvals from the U.S. Dept. of Energy). All rights reserved.
*
* This code is distributed under a BSD style license, see the LICENSE file
* for complete information.
*/
#include "iperf_config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <errno.h>
#include <signal.h>
#include <unistd.h>
#include <stdint.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdint.h>
#include <netinet/tcp.h>
#include "iperf.h"
#include "iperf_api.h"
#include "units.h"
#include "locale.h"
#include "net.h"
static int run(struct iperf_test *test);
/**************************************************************************/
int
main(int argc, char **argv)
{
struct iperf_test *test;
// XXX: Setting the process affinity requires root on most systems.
// Is this a feature we really need?
#ifdef TEST_PROC_AFFINITY
/* didnt seem to work.... */
/*
* increasing the priority of the process to minimise packet generation
* delay
*/
int rc = setpriority(PRIO_PROCESS, 0, -15);
if (rc < 0) {
perror("setpriority:");
fprintf(stderr, "setting priority to valid level\n");
rc = setpriority(PRIO_PROCESS, 0, 0);
}
/* setting the affinity of the process */
cpu_set_t cpu_set;
int affinity = -1;
int ncores = 1;
sched_getaffinity(0, sizeof(cpu_set_t), &cpu_set);
if (errno)
perror("couldn't get affinity:");
if ((ncores = sysconf(_SC_NPROCESSORS_CONF)) <= 0)
err("sysconf: couldn't get _SC_NPROCESSORS_CONF");
CPU_ZERO(&cpu_set);
CPU_SET(affinity, &cpu_set);
if (sched_setaffinity(0, sizeof(cpu_set_t), &cpu_set) != 0)
err("couldn't change CPU affinity");
#endif
test = iperf_new_test();
if (!test)
iperf_errexit(NULL, "create new test error - %s", iperf_strerror(i_errno));
iperf_defaults(test); /* sets defaults */
if (iperf_parse_arguments(test, argc, argv) < 0) {
iperf_err(test, "parameter error - %s", iperf_strerror(i_errno));
fprintf(stderr, "\n");
usage_long();
exit(1);
}
if (run(test) < 0)
iperf_errexit(test, "error - %s", iperf_strerror(i_errno));
iperf_free_test(test);
return 0;
}
/**************************************************************************/
static int
run(struct iperf_test *test)
{
int consecutive_errors;
switch (test->role) {
case 's':
if (test->daemon) {
int rc = daemon(0, 0);
if (rc < 0) {
i_errno = IEDAEMON;
iperf_errexit(test, "error - %s", iperf_strerror(i_errno));
}
}
consecutive_errors = 0;
if (iperf_create_pidfile(test) < 0) {
i_errno = IEPIDFILE;
iperf_errexit(test, "error - %s", iperf_strerror(i_errno));
}
for (;;) {
if (iperf_run_server(test) < 0) {
iperf_err(test, "error - %s", iperf_strerror(i_errno));
fprintf(stderr, "\n");
++consecutive_errors;
if (consecutive_errors >= 5) {
fprintf(stderr, "too many errors, exiting\n");
break;
}
} else
consecutive_errors = 0;
iperf_reset_test(test);
}
iperf_delete_pidfile(test);
break;
case 'c':
if (iperf_run_client(test) < 0)
iperf_errexit(test, "error - %s", iperf_strerror(i_errno));
break;
default:
usage();
break;
}
return 0;
}
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