linuxptp/ptp4l.c

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/**
* @file ptp4l.c
* @brief PTP Boundary Clock or Transparent Clock main program
* @note Copyright (C) 2011 Richard Cochran <richardcochran@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "clock.h"
#include "config.h"
#include "ntpshm.h"
#include "pi.h"
#include "print.h"
#include "raw.h"
#include "sk.h"
#include "transport.h"
#include "udp6.h"
#include "uds.h"
#include "util.h"
#include "version.h"
static void usage(char *progname)
{
fprintf(stderr,
"\nusage: %s [options]\n\n"
" Delay Mechanism\n\n"
" -A Auto, starting with E2E\n"
" -E E2E, delay request-response (default)\n"
" -P P2P, peer delay mechanism\n\n"
" Network Transport\n\n"
" -2 IEEE 802.3\n"
" -4 UDP IPV4 (default)\n"
" -6 UDP IPV6\n\n"
" Time Stamping\n\n"
" -H HARDWARE (default)\n"
" -S SOFTWARE\n"
" -L LEGACY HW\n\n"
" Other Options\n\n"
" -f [file] read configuration from 'file'\n"
" -i [dev] interface device to use, for example 'eth0'\n"
" (may be specified multiple times)\n"
" -p [dev] PTP hardware clock device to use, default auto\n"
" (ignored for SOFTWARE/LEGACY HW time stamping)\n"
" -s slave only mode (overrides configuration file)\n"
" -t transparent clock\n"
" -l [num] set the logging level to 'num'\n"
" -m print messages to stdout\n"
" -q do not print messages to the syslog\n"
" -v prints the software version and exits\n"
" -h prints this message and exits\n"
"\n",
progname);
}
int main(int argc, char *argv[])
{
char *config = NULL, *req_phc = NULL, *progname;
enum clock_type type = CLOCK_TYPE_ORDINARY;
int c, err = -1, index, print_level;
struct clock *clock = NULL;
struct option *opts;
struct config *cfg;
if (handle_term_signals())
return -1;
cfg = config_create();
if (!cfg) {
return -1;
}
opts = config_long_options(cfg);
/* Process the command line arguments. */
progname = strrchr(argv[0], '/');
progname = progname ? 1+progname : argv[0];
while (EOF != (c = getopt_long(argc, argv, "AEP246HSLf:i:p:sl:mqvh",
opts, &index))) {
switch (c) {
case 0:
if (config_parse_option(cfg, opts[index].name, optarg))
goto out;
break;
case 'A':
if (config_set_int(cfg, "delay_mechanism", DM_AUTO))
goto out;
break;
case 'E':
if (config_set_int(cfg, "delay_mechanism", DM_E2E))
goto out;
break;
case 'P':
if (config_set_int(cfg, "delay_mechanism", DM_P2P))
goto out;
break;
case '2':
if (config_set_int(cfg, "network_transport",
TRANS_IEEE_802_3))
goto out;
break;
case '4':
if (config_set_int(cfg, "network_transport",
TRANS_UDP_IPV4))
goto out;
break;
case '6':
if (config_set_int(cfg, "network_transport",
TRANS_UDP_IPV6))
goto out;
break;
case 'H':
if (config_set_int(cfg, "time_stamping", TS_HARDWARE))
goto out;
break;
case 'S':
if (config_set_int(cfg, "time_stamping", TS_SOFTWARE))
goto out;
break;
case 'L':
if (config_set_int(cfg, "time_stamping", TS_LEGACY_HW))
goto out;
break;
case 'f':
config = optarg;
break;
case 'i':
if (!config_create_interface(optarg, cfg))
goto out;
break;
case 'p':
req_phc = optarg;
break;
case 's':
if (config_set_int(cfg, "slaveOnly", 1)) {
goto out;
}
break;
case 'l':
if (get_arg_val_i(c, optarg, &print_level,
PRINT_LEVEL_MIN, PRINT_LEVEL_MAX))
goto out;
config_set_int(cfg, "logging_level", print_level);
break;
case 'm':
config_set_int(cfg, "verbose", 1);
break;
case 'q':
config_set_int(cfg, "use_syslog", 0);
break;
case 'v':
version_show(stdout);
return 0;
case 'h':
usage(progname);
return 0;
case '?':
usage(progname);
goto out;
default:
usage(progname);
goto out;
}
}
if (config && (c = config_read(config, cfg))) {
return c;
}
print_set_progname(progname);
print_set_tag(config_get_string(cfg, NULL, "message_tag"));
print_set_verbose(config_get_int(cfg, NULL, "verbose"));
print_set_syslog(config_get_int(cfg, NULL, "use_syslog"));
print_set_level(config_get_int(cfg, NULL, "logging_level"));
assume_two_step = config_get_int(cfg, NULL, "assume_two_step");
sk_check_fupsync = config_get_int(cfg, NULL, "check_fup_sync");
sk_tx_timeout = config_get_int(cfg, NULL, "tx_timestamp_timeout");
sk_hwts_filter_mode = config_get_int(cfg, NULL, "hwts_filter");
if (config_get_int(cfg, NULL, "clock_servo") == CLOCK_SERVO_NTPSHM) {
config_set_int(cfg, "kernel_leap", 0);
config_set_int(cfg, "sanity_freq_limit", 0);
}
if (STAILQ_EMPTY(&cfg->interfaces)) {
fprintf(stderr, "no interface specified\n");
usage(progname);
goto out;
}
type = config_get_int(cfg, NULL, "clock_type");
switch (type) {
case CLOCK_TYPE_ORDINARY:
if (cfg->n_interfaces > 1) {
type = CLOCK_TYPE_BOUNDARY;
}
break;
case CLOCK_TYPE_BOUNDARY:
if (cfg->n_interfaces < 2) {
fprintf(stderr, "BC needs at least two interfaces\n");
goto out;
}
break;
case CLOCK_TYPE_P2P:
if (cfg->n_interfaces < 2) {
fprintf(stderr, "TC needs at least two interfaces\n");
goto out;
}
if (DM_P2P != config_get_int(cfg, NULL, "delay_mechanism")) {
fprintf(stderr, "P2P_TC needs P2P delay mechanism\n");
goto out;
}
break;
case CLOCK_TYPE_E2E:
if (cfg->n_interfaces < 2) {
fprintf(stderr, "TC needs at least two interfaces\n");
goto out;
}
if (DM_E2E != config_get_int(cfg, NULL, "delay_mechanism")) {
fprintf(stderr, "E2E_TC needs E2E delay mechanism\n");
goto out;
}
break;
case CLOCK_TYPE_MANAGEMENT:
goto out;
}
clock = clock_create(type, cfg, req_phc);
if (!clock) {
fprintf(stderr, "failed to create a clock\n");
goto out;
}
err = 0;
while (is_running()) {
if (clock_poll(clock))
break;
}
out:
if (clock)
clock_destroy(clock);
config_destroy(cfg);
return err;
}