linuxptp/ptp4l.c

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/**
* @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 <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <linux/net_tstamp.h>
#include "clock.h"
#include "config.h"
#include "pi.h"
#include "print.h"
#include "raw.h"
#include "sk.h"
#include "transport.h"
#include "udp6.h"
#include "util.h"
#include "version.h"
int assume_two_step = 0;
static int running = 1;
static struct config cfg_settings = {
.dds = {
.dds = {
.flags = DDS_TWO_STEP_FLAG,
.priority1 = 128,
.clockQuality.clockClass = 248,
.clockQuality.clockAccuracy = 0xfe,
.clockQuality.offsetScaledLogVariance = 0xffff,
.priority2 = 128,
.domainNumber = 0,
},
.free_running = 0,
.freq_est_interval = 1,
.stats_interval = 0,
.kernel_leap = 1,
.time_source = INTERNAL_OSCILLATOR,
.clock_desc = {
.productDescription = {
.max_symbols = 64,
.text = ";;",
.length = 2,
},
.revisionData = {
.max_symbols = 32,
.text = ";;",
.length = 2,
},
.userDescription = { .max_symbols = 128 },
.manufacturerIdentity = { 0, 0, 0 },
},
},
.pod = {
.logAnnounceInterval = 1,
.logSyncInterval = 0,
.logMinDelayReqInterval = 0,
.logMinPdelayReqInterval = 0,
.announceReceiptTimeout = 3,
.transportSpecific = 0,
.path_trace_enabled = 0,
.follow_up_info = 0,
.freq_est_interval = 1,
/* Default to very a large neighborPropDelay threshold */
.neighborPropDelayThresh = 20000000,
},
.timestamping = TS_HARDWARE,
.dm = DM_E2E,
.transport = TRANS_UDP_IPV4,
.assume_two_step = &assume_two_step,
.tx_timestamp_timeout = &sk_tx_timeout,
.clock_servo = CLOCK_SERVO_PI,
.pi_proportional_const = &configured_pi_kp,
.pi_integral_const = &configured_pi_ki,
.pi_proportional_scale = &configured_pi_kp_scale,
.pi_proportional_exponent = &configured_pi_kp_exponent,
.pi_proportional_norm_max = &configured_pi_kp_norm_max,
.pi_integral_scale = &configured_pi_ki_scale,
.pi_integral_exponent = &configured_pi_ki_exponent,
.pi_integral_norm_max = &configured_pi_ki_norm_max,
.pi_offset_const = &configured_pi_offset,
.pi_f_offset_const = &configured_pi_f_offset,
.pi_max_frequency = &configured_pi_max_freq,
.ptp_dst_mac = ptp_dst_mac,
.p2p_dst_mac = p2p_dst_mac,
.udp6_scope = &udp6_scope,
.print_level = LOG_INFO,
.use_syslog = 1,
.verbose = 0,
.cfg_ignore = 0,
};
static void handle_int_quit_term(int s)
{
pr_notice("caught signal %d", s);
running = 0;
}
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"
" -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;
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.dds;
int phc_index = -1, required_modes = 0;
if (SIG_ERR == signal(SIGINT, handle_int_quit_term)) {
fprintf(stderr, "cannot handle SIGINT\n");
return -1;
}
if (SIG_ERR == signal(SIGQUIT, handle_int_quit_term)) {
fprintf(stderr, "cannot handle SIGQUIT\n");
return -1;
}
if (SIG_ERR == signal(SIGTERM, handle_int_quit_term)) {
fprintf(stderr, "cannot handle SIGTERM\n");
return -1;
}
/* Set fault timeouts to a default value */
for (i = 0; i < FT_CNT; i++) {
cfg_settings.pod.flt_interval_pertype[i].type = FTMO_LOG2_SECONDS;
cfg_settings.pod.flt_interval_pertype[i].val = 4;
}
/* 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:mqvh"))) {
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->flags |= DDS_SLAVE_ONLY;
*cfg_ignore |= CFG_IGNORE_SLAVEONLY;
break;
case 'l':
if (get_arg_val_i(c, optarg, &cfg_settings.print_level,
PRINT_LEVEL_MIN, PRINT_LEVEL_MAX))
return -1;
*cfg_ignore |= CFG_IGNORE_PRINT_LEVEL;
break;
case 'm':
cfg_settings.verbose = 1;
*cfg_ignore |= CFG_IGNORE_VERBOSE;
break;
case 'q':
cfg_settings.use_syslog = 0;
*cfg_ignore |= CFG_IGNORE_USE_SYSLOG;
break;
case 'v':
version_show(stdout);
return 0;
case 'h':
usage(progname);
return 0;
case '?':
usage(progname);
return -1;
default:
usage(progname);
return -1;
}
}
if (config && (c = config_read(config, &cfg_settings))) {
return c;
}
if (ds->flags & DDS_SLAVE_ONLY) {
ds->clockQuality.clockClass = 255;
}
print_set_progname(progname);
print_set_verbose(cfg_settings.verbose);
print_set_syslog(cfg_settings.use_syslog);
print_set_level(cfg_settings.print_level);
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;
}
if (!(ds->flags & DDS_TWO_STEP_FLAG)) {
switch (*timestamping) {
case TS_SOFTWARE:
case TS_LEGACY_HW:
fprintf(stderr, "one step is only possible "
"with hardware time stamping\n");
return -1;
case TS_HARDWARE:
*timestamping = TS_ONESTEP;
break;
case TS_ONESTEP:
break;
}
}
switch (*timestamping) {
case TS_SOFTWARE:
required_modes |= SOF_TIMESTAMPING_TX_SOFTWARE |
SOF_TIMESTAMPING_RX_SOFTWARE |
SOF_TIMESTAMPING_SOFTWARE;
break;
case TS_LEGACY_HW:
required_modes |= SOF_TIMESTAMPING_TX_HARDWARE |
SOF_TIMESTAMPING_RX_HARDWARE |
SOF_TIMESTAMPING_SYS_HARDWARE;
break;
case TS_HARDWARE:
case TS_ONESTEP:
required_modes |= SOF_TIMESTAMPING_TX_HARDWARE |
SOF_TIMESTAMPING_RX_HARDWARE |
SOF_TIMESTAMPING_RAW_HARDWARE;
break;
}
/* check whether timestamping mode is supported. */
for (i = 0; i < cfg_settings.nports; i++) {
if (iface[i].ts_info.valid &&
((iface[0].ts_info.so_timestamping & required_modes) != required_modes)) {
fprintf(stderr, "interface '%s' does not support "
"requested timestamping mode.\n",
iface[i].name);
return -1;
}
}
/* determine PHC Clock index */
if (cfg_settings.dds.free_running) {
phc_index = -1;
} else 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 (iface[0].ts_info.valid) {
phc_index = iface[0].ts_info.phc_index;
} else {
fprintf(stderr, "ptp device not specified and\n"
"automatic determination is not\n"
"supported. 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;
}
clock = clock_create(phc_index, iface, cfg_settings.nports,
*timestamping, &cfg_settings.dds,
cfg_settings.clock_servo);
if (!clock) {
fprintf(stderr, "failed to create a clock\n");
return -1;
}
while (running) {
if (clock_poll(clock))
break;
}
clock_destroy(clock);
return 0;
}