linuxptp/ptp4l.c

264 lines
6.7 KiB
C

/**
* @file ptp4l.c
* @brief PTP Boundary 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "clock.h"
#include "config.h"
#include "print.h"
#include "sk.h"
#include "transport.h"
#include "util.h"
int assume_two_step;
double configured_pi_kp, configured_pi_ki; /*see pi.c*/
extern unsigned char ptp_dst_mac[]; /*see raw.c*/
extern unsigned char p2p_dst_mac[]; /*see raw.c*/
static int running = 1;
static struct config cfg_settings = {
.dds = {
.slaveOnly = FALSE,
.priority1 = 128,
.clockQuality.clockClass = 248,
.clockQuality.clockAccuracy = 0xfe,
.clockQuality.offsetScaledLogVariance = 0xffff,
.priority2 = 128,
},
.pod = {
.logAnnounceInterval = 1,
.logSyncInterval = 0,
.logMinDelayReqInterval = 0,
.logMinPdelayReqInterval = 0,
.announceReceiptTimeout = 3,
.transportSpecific = 0,
.path_trace_enabled = 0,
.follow_up_info = 0,
},
.timestamping = TS_HARDWARE,
.dm = DM_E2E,
.transport = TRANS_UDP_IPV4,
.assume_two_step = &assume_two_step,
.tx_timestamp_retries = &sk_tx_retries,
.rx_timestamp_l2only = &sk_prefer_layer2,
.pi_proportional_const = &configured_pi_kp,
.pi_integral_const = &configured_pi_ki,
.ptp_dst_mac = ptp_dst_mac,
.p2p_dst_mac = p2p_dst_mac,
.print_level = LOG_INFO,
.use_syslog = 1,
.verbose = 0,
.cfg_ignore = 0,
};
static void usage(char *progname)
{
fprintf(stderr,
"\nusage: %s [options]\n\n"
" Delay Mechanism (per interface)\n\n"
" -A Auto, starting with E2E\n"
" -E E2E, delay request-response (default)\n"
" -P P2P, peer delay mechanism\n\n"
" Network Transport (per interface)\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"
" -l [num] set the logging level to 'num'\n"
" -q do not print messages to the syslog\n"
" -v print messages to stdout\n"
" -h prints this message and exits\n"
"\n",
progname);
}
int main(int argc, char *argv[])
{
char *config = NULL, *req_phc = NULL, *progname;
int c, i;
struct interface *iface = cfg_settings.iface;
char *ports[MAX_PORTS];
int nports = 0;
int *cfg_ignore = &cfg_settings.cfg_ignore;
enum delay_mechanism *dm = &cfg_settings.dm;
enum transport_type *transport = &cfg_settings.transport;
enum timestamp_type *timestamping = &cfg_settings.timestamping;
struct clock *clock;
struct defaultDS *ds = &cfg_settings.dds;
int phc_index = -1;
/* Process the command line arguments. */
progname = strrchr(argv[0], '/');
progname = progname ? 1+progname : argv[0];
while (EOF != (c = getopt(argc, argv, "AEP246HSLf:i:p:sl:qvh"))) {
switch (c) {
case 'A':
*dm = DM_AUTO;
*cfg_ignore |= CFG_IGNORE_DM;
break;
case 'E':
*dm = DM_E2E;
*cfg_ignore |= CFG_IGNORE_DM;
break;
case 'P':
*dm = DM_P2P;
*cfg_ignore |= CFG_IGNORE_DM;
break;
case '2':
*transport = TRANS_IEEE_802_3;
*cfg_ignore |= CFG_IGNORE_TRANSPORT;
break;
case '4':
*transport = TRANS_UDP_IPV4;
*cfg_ignore |= CFG_IGNORE_TRANSPORT;
break;
case '6':
*transport = TRANS_UDP_IPV6;
*cfg_ignore |= CFG_IGNORE_TRANSPORT;
break;
case 'H':
*timestamping = TS_HARDWARE;
*cfg_ignore |= CFG_IGNORE_TIMESTAMPING;
break;
case 'S':
*timestamping = TS_SOFTWARE;
*cfg_ignore |= CFG_IGNORE_TIMESTAMPING;
break;
case 'L':
*timestamping = TS_LEGACY_HW;
*cfg_ignore |= CFG_IGNORE_TIMESTAMPING;
break;
case 'f':
config = optarg;
break;
case 'i':
ports[nports] = optarg;
nports++;
break;
case 'p':
req_phc = optarg;
break;
case 's':
ds->slaveOnly = TRUE;
ds->clockQuality.clockClass = 255;
*cfg_ignore |= CFG_IGNORE_SLAVEONLY;
break;
case 'l':
cfg_settings.print_level = atoi(optarg);
*cfg_ignore |= CFG_IGNORE_PRINT_LEVEL;
break;
case 'q':
cfg_settings.use_syslog = 0;
*cfg_ignore |= CFG_IGNORE_USE_SYSLOG;
break;
case 'v':
cfg_settings.verbose = 1;
*cfg_ignore |= CFG_IGNORE_VERBOSE;
break;
case 'h':
usage(progname);
return 0;
case '?':
usage(progname);
return -1;
default:
usage(progname);
return -1;
}
}
if (config && config_read(config, &cfg_settings)) {
fprintf(stderr, "failed to read configuration file\n");
return -1;
}
for (i = 0; i < nports; i++) {
if (config_create_interface(ports[i], &cfg_settings) < 0) {
fprintf(stderr, "too many interfaces\n");
return -1;
}
}
if (!cfg_settings.nports) {
fprintf(stderr, "no interface specified\n");
usage(progname);
return -1;
}
/* determine PHC Clock index */
if (*timestamping == TS_SOFTWARE || *timestamping == TS_LEGACY_HW) {
phc_index = -1;
} else if (req_phc) {
if (1 != sscanf(req_phc, "/dev/ptp%d", &phc_index)) {
fprintf(stderr, "bad ptp device string\n");
return -1;
}
} else if (sk_interface_phc(iface[0].name, &phc_index)) {
fprintf(stderr, "get_ts_info not supported\n"
"please specify ptp device\n");
return -1;
}
if (phc_index >= 0) {
pr_info("selected /dev/ptp%d as PTP clock", phc_index);
}
if (generate_clock_identity(&ds->clockIdentity, iface[0].name)) {
fprintf(stderr, "failed to generate a clock identity\n");
return -1;
}
print_set_verbose(cfg_settings.verbose);
print_set_syslog(cfg_settings.use_syslog);
print_set_level(cfg_settings.print_level);
clock = clock_create(phc_index, iface, cfg_settings.nports,
*timestamping, ds);
if (!clock) {
fprintf(stderr, "failed to create a clock\n");
return -1;
}
while (running) {
if (clock_poll(clock))
break;
}
return 0;
}